[PATCH V1 0/3] Split the DMA core out from mpc5200_psc_i2s.c

[PATCH V1 0/3] Split the DMA core out from mpc5200_psc_i2s.c

[Jon Smirl]

Patch series to separate out the mpc5200 core DMA routines from
mpc5200_psc_i2s.c into a standalone mpc5200_dma.c. No intention
to change how anything works, this is just a code reorg needed for
later patches to build on.

---

Jon Smirl (3):
      Rename exports in mpc5200_dma.c
      Rename the PSC functions to DMA
      Basic split of mpc5200 DMA code out from mpc5200_psc_i2s


 sound/soc/fsl/Kconfig           |    4
 sound/soc/fsl/Makefile          |    2
 sound/soc/fsl/mpc5200_dma.c     |  463 ++++++++++++++++++++++++++++
 sound/soc/fsl/mpc5200_dma.h     |   81 +++++
 sound/soc/fsl/mpc5200_psc_i2s.c |  644 +++++----------------------------------
 5 files changed, 632 insertions(+), 562 deletions(-)
 create mode 100644 sound/soc/fsl/mpc5200_dma.c
 create mode 100644 sound/soc/fsl/mpc5200_dma.h

--
Jon Smirl
jonsmirl@gmail.com

[PATCH V1 1/3] Basic split of mpc5200 DMA code out from mpc5200_psc_i2s

[Jon Smirl]

Basic split of mpc5200 DMA code out from i2s into a standalone file.

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
---
 sound/soc/fsl/Kconfig           |    4 
 sound/soc/fsl/Makefile          |    2 
 sound/soc/fsl/mpc5200_dma.c     |  457 +++++++++++++++++++++++++++++++++++++
 sound/soc/fsl/mpc5200_dma.h     |   81 +++++++
 sound/soc/fsl/mpc5200_psc_i2s.c |  484 ---------------------------------------
 5 files changed, 546 insertions(+), 482 deletions(-)
 create mode 100644 sound/soc/fsl/mpc5200_dma.c
 create mode 100644 sound/soc/fsl/mpc5200_dma.h

diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
index 9fc9082..dc79bdf 100644
--- a/sound/soc/fsl/Kconfig
+++ b/sound/soc/fsl/Kconfig
@@ -1,5 +1,8 @@
 config SND_SOC_OF_SIMPLE
 	tristate
+	
+config SND_MPC52xx_DMA
+	tristate
 
 # ASoC platform support for the Freescale MPC8610 SOC.  This compiles drivers
 # for the SSI and the Elo DMA controller.  You will still need to select
@@ -23,6 +26,7 @@ config SND_SOC_MPC5200_I2S
 	tristate "Freescale MPC5200 PSC in I2S mode driver"
 	depends on PPC_MPC52xx && PPC_BESTCOMM
 	select SND_SOC_OF_SIMPLE
+	select SND_MPC52xx_DMA
 	select PPC_BESTCOMM_GEN_BD
 	help
 	  Say Y here to support the MPC5200 PSCs in I2S mode.
diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile
index f85134c..7731ef2 100644
--- a/sound/soc/fsl/Makefile
+++ b/sound/soc/fsl/Makefile
@@ -10,5 +10,7 @@ snd-soc-fsl-ssi-objs := fsl_ssi.o
 snd-soc-fsl-dma-objs := fsl_dma.o
 obj-$(CONFIG_SND_SOC_MPC8610) += snd-soc-fsl-ssi.o snd-soc-fsl-dma.o
 
+# MPC5200 Platform Support
+obj-$(CONFIG_SND_MPC52xx_DMA) += mpc5200_dma.o
 obj-$(CONFIG_SND_SOC_MPC5200_I2S) += mpc5200_psc_i2s.o
 
diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c
new file mode 100644
index 0000000..cccaff4
--- /dev/null
+++ b/sound/soc/fsl/mpc5200_dma.c
@@ -0,0 +1,457 @@
+/*
+ * Freescale MPC5200 PSC DMA
+ * ALSA SoC Platform driver
+ *
+ * Copyright (C) 2008 Secret Lab Technologies Ltd.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <linux/dma-mapping.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+#include <sound/soc-of-simple.h>
+
+#include <sysdev/bestcomm/bestcomm.h>
+#include <sysdev/bestcomm/gen_bd.h>
+#include <asm/mpc52xx_psc.h>
+
+#include "mpc5200_dma.h"
+
+MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
+MODULE_DESCRIPTION("Freescale MPC5200 PSC in DMA mode ASoC Driver");
+MODULE_LICENSE("GPL");
+
+/*
+ * Interrupt handlers
+ */
+static irqreturn_t psc_i2s_status_irq(int irq, void *_psc_i2s)
+{
+	struct psc_i2s *psc_i2s = _psc_i2s;
+	struct mpc52xx_psc __iomem *regs = psc_i2s->psc_regs;
+	u16 isr;
+
+	isr = in_be16(&regs->mpc52xx_psc_isr);
+
+	/* Playback underrun error */
+	if (psc_i2s->playback.active && (isr & MPC52xx_PSC_IMR_TXEMP))
+		psc_i2s->stats.underrun_count++;
+
+	/* Capture overrun error */
+	if (psc_i2s->capture.active && (isr & MPC52xx_PSC_IMR_ORERR))
+		psc_i2s->stats.overrun_count++;
+
+	out_8(&regs->command, 4 << 4);	/* reset the error status */
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * psc_i2s_bcom_enqueue_next_buffer - Enqueue another audio buffer
+ * @s: pointer to stream private data structure
+ *
+ * Enqueues another audio period buffer into the bestcomm queue.
+ *
+ * Note: The routine must only be called when there is space available in
+ * the queue.  Otherwise the enqueue will fail and the audio ring buffer
+ * will get out of sync
+ */
+static void psc_i2s_bcom_enqueue_next_buffer(struct psc_i2s_stream *s)
+{
+	struct bcom_bd *bd;
+
+	/* Prepare and enqueue the next buffer descriptor */
+	bd = bcom_prepare_next_buffer(s->bcom_task);
+	bd->status = s->period_bytes;
+	bd->data[0] = s->period_next_pt;
+	bcom_submit_next_buffer(s->bcom_task, NULL);
+
+	/* Update for next period */
+	s->period_next_pt += s->period_bytes;
+	if (s->period_next_pt >= s->period_end)
+		s->period_next_pt = s->period_start;
+}
+
+/* Bestcomm DMA irq handler */
+static irqreturn_t psc_i2s_bcom_irq(int irq, void *_psc_i2s_stream)
+{
+	struct psc_i2s_stream *s = _psc_i2s_stream;
+
+	/* For each finished period, dequeue the completed period buffer
+	 * and enqueue a new one in it's place. */
+	while (bcom_buffer_done(s->bcom_task)) {
+		bcom_retrieve_buffer(s->bcom_task, NULL, NULL);
+		s->period_current_pt += s->period_bytes;
+		if (s->period_current_pt >= s->period_end)
+			s->period_current_pt = s->period_start;
+		psc_i2s_bcom_enqueue_next_buffer(s);
+		bcom_enable(s->bcom_task);
+	}
+
+	/* If the stream is active, then also inform the PCM middle layer
+	 * of the period finished event. */
+	if (s->active)
+		snd_pcm_period_elapsed(s->stream);
+
+	return IRQ_HANDLED;
+}
+
+/**
+ * psc_i2s_startup: create a new substream
+ *
+ * This is the first function called when a stream is opened.
+ *
+ * If this is the first stream open, then grab the IRQ and program most of
+ * the PSC registers.
+ */
+int psc_i2s_startup(struct snd_pcm_substream *substream,
+			   struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
+	int rc;
+
+	dev_dbg(psc_i2s->dev, "psc_i2s_startup(substream=%p)\n", substream);
+
+	if (!psc_i2s->playback.active &&
+	    !psc_i2s->capture.active) {
+		/* Setup the IRQs */
+		rc = request_irq(psc_i2s->irq, &psc_i2s_status_irq, IRQF_SHARED,
+				 "psc-i2s-status", psc_i2s);
+		rc |= request_irq(psc_i2s->capture.irq,
+				  &psc_i2s_bcom_irq, IRQF_SHARED,
+				  "psc-i2s-capture", &psc_i2s->capture);
+		rc |= request_irq(psc_i2s->playback.irq,
+				  &psc_i2s_bcom_irq, IRQF_SHARED,
+				  "psc-i2s-playback", &psc_i2s->playback);
+		if (rc) {
+			free_irq(psc_i2s->irq, psc_i2s);
+			free_irq(psc_i2s->capture.irq,
+				 &psc_i2s->capture);
+			free_irq(psc_i2s->playback.irq,
+				 &psc_i2s->playback);
+			return -ENODEV;
+		}
+	}
+
+	return 0;
+}
+
+int psc_i2s_hw_free(struct snd_pcm_substream *substream,
+			   struct snd_soc_dai *dai)
+{
+	snd_pcm_set_runtime_buffer(substream, NULL);
+	return 0;
+}
+
+/**
+ * psc_i2s_trigger: start and stop the DMA transfer.
+ *
+ * This function is called by ALSA to start, stop, pause, and resume the DMA
+ * transfer of data.
+ */
+int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+			   struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
+	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct psc_i2s_stream *s;
+	struct mpc52xx_psc __iomem *regs = psc_i2s->psc_regs;
+	u16 imr;
+	u8 psc_cmd;
+	unsigned long flags;
+
+	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
+		s = &psc_i2s->capture;
+	else
+		s = &psc_i2s->playback;
+
+	dev_dbg(psc_i2s->dev, "psc_i2s_trigger(substream=%p, cmd=%i)"
+		" stream_id=%i\n",
+		substream, cmd, substream->pstr->stream);
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		s->period_bytes = frames_to_bytes(runtime,
+						  runtime->period_size);
+		s->period_start = virt_to_phys(runtime->dma_area);
+		s->period_end = s->period_start +
+				(s->period_bytes * runtime->periods);
+		s->period_next_pt = s->period_start;
+		s->period_current_pt = s->period_start;
+		s->active = 1;
+
+		/* First; reset everything */
+		if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE) {
+			out_8(&regs->command, MPC52xx_PSC_RST_RX);
+			out_8(&regs->command, MPC52xx_PSC_RST_ERR_STAT);
+		} else {
+			out_8(&regs->command, MPC52xx_PSC_RST_TX);
+			out_8(&regs->command, MPC52xx_PSC_RST_ERR_STAT);
+		}
+
+		/* Next, fill up the bestcomm bd queue and enable DMA.
+		 * This will begin filling the PSC's fifo. */
+		if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
+			bcom_gen_bd_rx_reset(s->bcom_task);
+		else
+			bcom_gen_bd_tx_reset(s->bcom_task);
+		while (!bcom_queue_full(s->bcom_task))
+			psc_i2s_bcom_enqueue_next_buffer(s);
+		bcom_enable(s->bcom_task);
+
+		/* Due to errata in the i2s mode; need to line up enabling
+		 * the transmitter with a transition on the frame sync
+		 * line */
+
+		spin_lock_irqsave(&psc_i2s->lock, flags);
+		/* first make sure it is low */
+		while ((in_8(&regs->ipcr_acr.ipcr) & 0x80) != 0)
+			;
+		/* then wait for the transition to high */
+		while ((in_8(&regs->ipcr_acr.ipcr) & 0x80) == 0)
+			;
+		/* Finally, enable the PSC.
+		 * Receiver must always be enabled; even when we only want
+		 * transmit.  (see 15.3.2.3 of MPC5200B User's Guide) */
+		psc_cmd = MPC52xx_PSC_RX_ENABLE;
+		if (substream->pstr->stream == SNDRV_PCM_STREAM_PLAYBACK)
+			psc_cmd |= MPC52xx_PSC_TX_ENABLE;
+		out_8(&regs->command, psc_cmd);
+		spin_unlock_irqrestore(&psc_i2s->lock, flags);
+
+		break;
+
+	case SNDRV_PCM_TRIGGER_STOP:
+		/* Turn off the PSC */
+		s->active = 0;
+		if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE) {
+			if (!psc_i2s->playback.active) {
+				out_8(&regs->command, 2 << 4);	/* reset rx */
+				out_8(&regs->command, 3 << 4);	/* reset tx */
+				out_8(&regs->command, 4 << 4);	/* reset err */
+			}
+		} else {
+			out_8(&regs->command, 3 << 4);	/* reset tx */
+			out_8(&regs->command, 4 << 4);	/* reset err */
+			if (!psc_i2s->capture.active)
+				out_8(&regs->command, 2 << 4);	/* reset rx */
+		}
+
+		bcom_disable(s->bcom_task);
+		while (!bcom_queue_empty(s->bcom_task))
+			bcom_retrieve_buffer(s->bcom_task, NULL, NULL);
+
+		break;
+
+	default:
+		dev_dbg(psc_i2s->dev, "invalid command\n");
+		return -EINVAL;
+	}
+
+	/* Update interrupt enable settings */
+	imr = 0;
+	if (psc_i2s->playback.active)
+		imr |= MPC52xx_PSC_IMR_TXEMP;
+	if (psc_i2s->capture.active)
+		imr |= MPC52xx_PSC_IMR_ORERR;
+	out_be16(&regs->isr_imr.imr, imr);
+
+	return 0;
+}
+
+/**
+ * psc_i2s_shutdown: shutdown the data transfer on a stream
+ *
+ * Shutdown the PSC if there are no other substreams open.
+ */
+void psc_i2s_shutdown(struct snd_pcm_substream *substream,
+			     struct snd_soc_dai *dai)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
+
+	dev_dbg(psc_i2s->dev, "psc_i2s_shutdown(substream=%p)\n", substream);
+
+	/*
+	 * If this is the last active substream, disable the PSC and release
+	 * the IRQ.
+	 */
+	if (!psc_i2s->playback.active &&
+	    !psc_i2s->capture.active) {
+
+		/* Disable all interrupts and reset the PSC */
+		out_be16(&psc_i2s->psc_regs->isr_imr.imr, 0);
+		out_8(&psc_i2s->psc_regs->command, 3 << 4); /* reset tx */
+		out_8(&psc_i2s->psc_regs->command, 2 << 4); /* reset rx */
+		out_8(&psc_i2s->psc_regs->command, 1 << 4); /* reset mode */
+		out_8(&psc_i2s->psc_regs->command, 4 << 4); /* reset error */
+
+		/* Release irqs */
+		free_irq(psc_i2s->irq, psc_i2s);
+		free_irq(psc_i2s->capture.irq, &psc_i2s->capture);
+		free_irq(psc_i2s->playback.irq, &psc_i2s->playback);
+	}
+}
+
+/* ---------------------------------------------------------------------
+ * The PSC DMA 'ASoC platform' driver
+ *
+ * Can be referenced by an 'ASoC machine' driver
+ * This driver only deals with the audio bus; it doesn't have any
+ * interaction with the attached codec
+ */
+
+static const struct snd_pcm_hardware psc_i2s_pcm_hardware = {
+	.info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
+		SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER,
+	.formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE |
+		   SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE,
+	.rate_min = 8000,
+	.rate_max = 48000,
+	.channels_min = 2,
+	.channels_max = 2,
+	.period_bytes_max	= 1024 * 1024,
+	.period_bytes_min	= 32,
+	.periods_min		= 2,
+	.periods_max		= 256,
+	.buffer_bytes_max	= 2 * 1024 * 1024,
+	.fifo_size		= 0,
+};
+
+static int psc_i2s_pcm_open(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
+	struct psc_i2s_stream *s;
+
+	dev_dbg(psc_i2s->dev, "psc_i2s_pcm_open(substream=%p)\n", substream);
+
+	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
+		s = &psc_i2s->capture;
+	else
+		s = &psc_i2s->playback;
+
+	snd_soc_set_runtime_hwparams(substream, &psc_i2s_pcm_hardware);
+
+	s->stream = substream;
+	return 0;
+}
+
+static int psc_i2s_pcm_close(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
+	struct psc_i2s_stream *s;
+
+	dev_dbg(psc_i2s->dev, "psc_i2s_pcm_close(substream=%p)\n", substream);
+
+	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
+		s = &psc_i2s->capture;
+	else
+		s = &psc_i2s->playback;
+
+	s->stream = NULL;
+	return 0;
+}
+
+static snd_pcm_uframes_t
+psc_i2s_pcm_pointer(struct snd_pcm_substream *substream)
+{
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
+	struct psc_i2s_stream *s;
+	dma_addr_t count;
+
+	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
+		s = &psc_i2s->capture;
+	else
+		s = &psc_i2s->playback;
+
+	count = s->period_current_pt - s->period_start;
+
+	return bytes_to_frames(substream->runtime, count);
+}
+
+static struct snd_pcm_ops psc_i2s_pcm_ops = {
+	.open		= psc_i2s_pcm_open,
+	.close		= psc_i2s_pcm_close,
+	.ioctl		= snd_pcm_lib_ioctl,
+	.pointer	= psc_i2s_pcm_pointer,
+};
+
+static u64 psc_i2s_pcm_dmamask = 0xffffffff;
+static int psc_i2s_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
+			   struct snd_pcm *pcm)
+{
+	struct snd_soc_pcm_runtime *rtd = pcm->private_data;
+	size_t size = psc_i2s_pcm_hardware.buffer_bytes_max;
+	int rc = 0;
+
+	dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_new(card=%p, dai=%p, pcm=%p)\n",
+		card, dai, pcm);
+
+	if (!card->dev->dma_mask)
+		card->dev->dma_mask = &psc_i2s_pcm_dmamask;
+	if (!card->dev->coherent_dma_mask)
+		card->dev->coherent_dma_mask = 0xffffffff;
+
+	if (pcm->streams[0].substream) {
+		rc = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, pcm->dev, size,
+					&pcm->streams[0].substream->dma_buffer);
+		if (rc)
+			goto playback_alloc_err;
+	}
+
+	if (pcm->streams[1].substream) {
+		rc = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, pcm->dev, size,
+					&pcm->streams[1].substream->dma_buffer);
+		if (rc)
+			goto capture_alloc_err;
+	}
+
+	return 0;
+
+ capture_alloc_err:
+	if (pcm->streams[0].substream)
+		snd_dma_free_pages(&pcm->streams[0].substream->dma_buffer);
+ playback_alloc_err:
+	dev_err(card->dev, "Cannot allocate buffer(s)\n");
+	return -ENOMEM;
+}
+
+static void psc_i2s_pcm_free(struct snd_pcm *pcm)
+{
+	struct snd_soc_pcm_runtime *rtd = pcm->private_data;
+	struct snd_pcm_substream *substream;
+	int stream;
+
+	dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_free(pcm=%p)\n", pcm);
+
+	for (stream = 0; stream < 2; stream++) {
+		substream = pcm->streams[stream].substream;
+		if (substream) {
+			snd_dma_free_pages(&substream->dma_buffer);
+			substream->dma_buffer.area = NULL;
+			substream->dma_buffer.addr = 0;
+		}
+	}
+}
+
+struct snd_soc_platform psc_i2s_pcm_soc_platform = {
+	.name		= "mpc5200-psc-audio",
+	.pcm_ops	= &psc_i2s_pcm_ops,
+	.pcm_new	= &psc_i2s_pcm_new,
+	.pcm_free	= &psc_i2s_pcm_free,
+};
+
diff --git a/sound/soc/fsl/mpc5200_dma.h b/sound/soc/fsl/mpc5200_dma.h
new file mode 100644
index 0000000..9a19e8a
--- /dev/null
+++ b/sound/soc/fsl/mpc5200_dma.h
@@ -0,0 +1,81 @@
+/*
+ * Freescale MPC5200 Audio DMA driver
+ */
+
+#ifndef __SOUND_SOC_FSL_MPC5200_DMA_H__
+#define __SOUND_SOC_FSL_MPC5200_DMA_H__
+
+/**
+ * psc_i2s_stream - Data specific to a single stream (playback or capture)
+ * @active:		flag indicating if the stream is active
+ * @psc_i2s:		pointer back to parent psc_i2s data structure
+ * @bcom_task:		bestcomm task structure
+ * @irq:		irq number for bestcomm task
+ * @period_start:	physical address of start of DMA region
+ * @period_end:		physical address of end of DMA region
+ * @period_next_pt:	physical address of next DMA buffer to enqueue
+ * @period_bytes:	size of DMA period in bytes
+ */
+struct psc_i2s_stream {
+	int active;
+	struct psc_i2s *psc_i2s;
+	struct bcom_task *bcom_task;
+	int irq;
+	struct snd_pcm_substream *stream;
+	dma_addr_t period_start;
+	dma_addr_t period_end;
+	dma_addr_t period_next_pt;
+	dma_addr_t period_current_pt;
+	int period_bytes;
+};
+
+/**
+ * psc_i2s - Private driver data
+ * @name: short name for this device ("PSC0", "PSC1", etc)
+ * @psc_regs: pointer to the PSC's registers
+ * @fifo_regs: pointer to the PSC's FIFO registers
+ * @irq: IRQ of this PSC
+ * @dev: struct device pointer
+ * @dai: the CPU DAI for this device
+ * @sicr: Base value used in serial interface control register; mode is ORed
+ *        with this value.
+ * @playback: Playback stream context data
+ * @capture: Capture stream context data
+ */
+struct psc_i2s {
+	char name[32];
+	struct mpc52xx_psc __iomem *psc_regs;
+	struct mpc52xx_psc_fifo __iomem *fifo_regs;
+	unsigned int irq;
+	struct device *dev;
+	struct snd_soc_dai dai;
+	spinlock_t lock;
+	u32 sicr;
+
+	/* per-stream data */
+	struct psc_i2s_stream playback;
+	struct psc_i2s_stream capture;
+
+	/* Statistics */
+	struct {
+		int overrun_count;
+		int underrun_count;
+	} stats;
+};
+
+
+int psc_i2s_startup(struct snd_pcm_substream *substream,
+			   struct snd_soc_dai *dai);
+
+int psc_i2s_hw_free(struct snd_pcm_substream *substream,
+			   struct snd_soc_dai *dai);
+
+void psc_i2s_shutdown(struct snd_pcm_substream *substream,
+			     struct snd_soc_dai *dai);
+
+int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+			   struct snd_soc_dai *dai);
+
+extern struct snd_soc_platform psc_i2s_pcm_soc_platform;
+
+#endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */
diff --git a/sound/soc/fsl/mpc5200_psc_i2s.c b/sound/soc/fsl/mpc5200_psc_i2s.c
index 3aa729d..8974b53 100644
--- a/sound/soc/fsl/mpc5200_psc_i2s.c
+++ b/sound/soc/fsl/mpc5200_psc_i2s.c
@@ -25,6 +25,8 @@
 #include <sysdev/bestcomm/gen_bd.h>
 #include <asm/mpc52xx_psc.h>
 
+#include "mpc5200_dma.h"
+
 MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
 MODULE_DESCRIPTION("Freescale MPC5200 PSC in I2S mode ASoC Driver");
 MODULE_LICENSE("GPL");
@@ -47,179 +49,6 @@ MODULE_LICENSE("GPL");
 			 SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S24_BE | \
 			 SNDRV_PCM_FMTBIT_S32_BE)
 
-/**
- * psc_i2s_stream - Data specific to a single stream (playback or capture)
- * @active:		flag indicating if the stream is active
- * @psc_i2s:		pointer back to parent psc_i2s data structure
- * @bcom_task:		bestcomm task structure
- * @irq:		irq number for bestcomm task
- * @period_start:	physical address of start of DMA region
- * @period_end:		physical address of end of DMA region
- * @period_next_pt:	physical address of next DMA buffer to enqueue
- * @period_bytes:	size of DMA period in bytes
- */
-struct psc_i2s_stream {
-	int active;
-	struct psc_i2s *psc_i2s;
-	struct bcom_task *bcom_task;
-	int irq;
-	struct snd_pcm_substream *stream;
-	dma_addr_t period_start;
-	dma_addr_t period_end;
-	dma_addr_t period_next_pt;
-	dma_addr_t period_current_pt;
-	int period_bytes;
-};
-
-/**
- * psc_i2s - Private driver data
- * @name: short name for this device ("PSC0", "PSC1", etc)
- * @psc_regs: pointer to the PSC's registers
- * @fifo_regs: pointer to the PSC's FIFO registers
- * @irq: IRQ of this PSC
- * @dev: struct device pointer
- * @dai: the CPU DAI for this device
- * @sicr: Base value used in serial interface control register; mode is ORed
- *        with this value.
- * @playback: Playback stream context data
- * @capture: Capture stream context data
- */
-struct psc_i2s {
-	char name[32];
-	struct mpc52xx_psc __iomem *psc_regs;
-	struct mpc52xx_psc_fifo __iomem *fifo_regs;
-	unsigned int irq;
-	struct device *dev;
-	struct snd_soc_dai dai;
-	spinlock_t lock;
-	u32 sicr;
-
-	/* per-stream data */
-	struct psc_i2s_stream playback;
-	struct psc_i2s_stream capture;
-
-	/* Statistics */
-	struct {
-		int overrun_count;
-		int underrun_count;
-	} stats;
-};
-
-/*
- * Interrupt handlers
- */
-static irqreturn_t psc_i2s_status_irq(int irq, void *_psc_i2s)
-{
-	struct psc_i2s *psc_i2s = _psc_i2s;
-	struct mpc52xx_psc __iomem *regs = psc_i2s->psc_regs;
-	u16 isr;
-
-	isr = in_be16(&regs->mpc52xx_psc_isr);
-
-	/* Playback underrun error */
-	if (psc_i2s->playback.active && (isr & MPC52xx_PSC_IMR_TXEMP))
-		psc_i2s->stats.underrun_count++;
-
-	/* Capture overrun error */
-	if (psc_i2s->capture.active && (isr & MPC52xx_PSC_IMR_ORERR))
-		psc_i2s->stats.overrun_count++;
-
-	out_8(&regs->command, 4 << 4);	/* reset the error status */
-
-	return IRQ_HANDLED;
-}
-
-/**
- * psc_i2s_bcom_enqueue_next_buffer - Enqueue another audio buffer
- * @s: pointer to stream private data structure
- *
- * Enqueues another audio period buffer into the bestcomm queue.
- *
- * Note: The routine must only be called when there is space available in
- * the queue.  Otherwise the enqueue will fail and the audio ring buffer
- * will get out of sync
- */
-static void psc_i2s_bcom_enqueue_next_buffer(struct psc_i2s_stream *s)
-{
-	struct bcom_bd *bd;
-
-	/* Prepare and enqueue the next buffer descriptor */
-	bd = bcom_prepare_next_buffer(s->bcom_task);
-	bd->status = s->period_bytes;
-	bd->data[0] = s->period_next_pt;
-	bcom_submit_next_buffer(s->bcom_task, NULL);
-
-	/* Update for next period */
-	s->period_next_pt += s->period_bytes;
-	if (s->period_next_pt >= s->period_end)
-		s->period_next_pt = s->period_start;
-}
-
-/* Bestcomm DMA irq handler */
-static irqreturn_t psc_i2s_bcom_irq(int irq, void *_psc_i2s_stream)
-{
-	struct psc_i2s_stream *s = _psc_i2s_stream;
-
-	/* For each finished period, dequeue the completed period buffer
-	 * and enqueue a new one in it's place. */
-	while (bcom_buffer_done(s->bcom_task)) {
-		bcom_retrieve_buffer(s->bcom_task, NULL, NULL);
-		s->period_current_pt += s->period_bytes;
-		if (s->period_current_pt >= s->period_end)
-			s->period_current_pt = s->period_start;
-		psc_i2s_bcom_enqueue_next_buffer(s);
-		bcom_enable(s->bcom_task);
-	}
-
-	/* If the stream is active, then also inform the PCM middle layer
-	 * of the period finished event. */
-	if (s->active)
-		snd_pcm_period_elapsed(s->stream);
-
-	return IRQ_HANDLED;
-}
-
-/**
- * psc_i2s_startup: create a new substream
- *
- * This is the first function called when a stream is opened.
- *
- * If this is the first stream open, then grab the IRQ and program most of
- * the PSC registers.
- */
-static int psc_i2s_startup(struct snd_pcm_substream *substream,
-			   struct snd_soc_dai *dai)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
-	int rc;
-
-	dev_dbg(psc_i2s->dev, "psc_i2s_startup(substream=%p)\n", substream);
-
-	if (!psc_i2s->playback.active &&
-	    !psc_i2s->capture.active) {
-		/* Setup the IRQs */
-		rc = request_irq(psc_i2s->irq, &psc_i2s_status_irq, IRQF_SHARED,
-				 "psc-i2s-status", psc_i2s);
-		rc |= request_irq(psc_i2s->capture.irq,
-				  &psc_i2s_bcom_irq, IRQF_SHARED,
-				  "psc-i2s-capture", &psc_i2s->capture);
-		rc |= request_irq(psc_i2s->playback.irq,
-				  &psc_i2s_bcom_irq, IRQF_SHARED,
-				  "psc-i2s-playback", &psc_i2s->playback);
-		if (rc) {
-			free_irq(psc_i2s->irq, psc_i2s);
-			free_irq(psc_i2s->capture.irq,
-				 &psc_i2s->capture);
-			free_irq(psc_i2s->playback.irq,
-				 &psc_i2s->playback);
-			return -ENODEV;
-		}
-	}
-
-	return 0;
-}
-
 static int psc_i2s_hw_params(struct snd_pcm_substream *substream,
 				 struct snd_pcm_hw_params *params,
 				 struct snd_soc_dai *dai)
@@ -258,164 +87,6 @@ static int psc_i2s_hw_params(struct snd_pcm_substream *substream,
 	return 0;
 }
 
-static int psc_i2s_hw_free(struct snd_pcm_substream *substream,
-			   struct snd_soc_dai *dai)
-{
-	snd_pcm_set_runtime_buffer(substream, NULL);
-	return 0;
-}
-
-/**
- * psc_i2s_trigger: start and stop the DMA transfer.
- *
- * This function is called by ALSA to start, stop, pause, and resume the DMA
- * transfer of data.
- */
-static int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
-			   struct snd_soc_dai *dai)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
-	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct psc_i2s_stream *s;
-	struct mpc52xx_psc __iomem *regs = psc_i2s->psc_regs;
-	u16 imr;
-	u8 psc_cmd;
-	unsigned long flags;
-
-	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-		s = &psc_i2s->capture;
-	else
-		s = &psc_i2s->playback;
-
-	dev_dbg(psc_i2s->dev, "psc_i2s_trigger(substream=%p, cmd=%i)"
-		" stream_id=%i\n",
-		substream, cmd, substream->pstr->stream);
-
-	switch (cmd) {
-	case SNDRV_PCM_TRIGGER_START:
-		s->period_bytes = frames_to_bytes(runtime,
-						  runtime->period_size);
-		s->period_start = virt_to_phys(runtime->dma_area);
-		s->period_end = s->period_start +
-				(s->period_bytes * runtime->periods);
-		s->period_next_pt = s->period_start;
-		s->period_current_pt = s->period_start;
-		s->active = 1;
-
-		/* First; reset everything */
-		if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE) {
-			out_8(&regs->command, MPC52xx_PSC_RST_RX);
-			out_8(&regs->command, MPC52xx_PSC_RST_ERR_STAT);
-		} else {
-			out_8(&regs->command, MPC52xx_PSC_RST_TX);
-			out_8(&regs->command, MPC52xx_PSC_RST_ERR_STAT);
-		}
-
-		/* Next, fill up the bestcomm bd queue and enable DMA.
-		 * This will begin filling the PSC's fifo. */
-		if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-			bcom_gen_bd_rx_reset(s->bcom_task);
-		else
-			bcom_gen_bd_tx_reset(s->bcom_task);
-		while (!bcom_queue_full(s->bcom_task))
-			psc_i2s_bcom_enqueue_next_buffer(s);
-		bcom_enable(s->bcom_task);
-
-		/* Due to errata in the i2s mode; need to line up enabling
-		 * the transmitter with a transition on the frame sync
-		 * line */
-
-		spin_lock_irqsave(&psc_i2s->lock, flags);
-		/* first make sure it is low */
-		while ((in_8(&regs->ipcr_acr.ipcr) & 0x80) != 0)
-			;
-		/* then wait for the transition to high */
-		while ((in_8(&regs->ipcr_acr.ipcr) & 0x80) == 0)
-			;
-		/* Finally, enable the PSC.
-		 * Receiver must always be enabled; even when we only want
-		 * transmit.  (see 15.3.2.3 of MPC5200B User's Guide) */
-		psc_cmd = MPC52xx_PSC_RX_ENABLE;
-		if (substream->pstr->stream == SNDRV_PCM_STREAM_PLAYBACK)
-			psc_cmd |= MPC52xx_PSC_TX_ENABLE;
-		out_8(&regs->command, psc_cmd);
-		spin_unlock_irqrestore(&psc_i2s->lock, flags);
-
-		break;
-
-	case SNDRV_PCM_TRIGGER_STOP:
-		/* Turn off the PSC */
-		s->active = 0;
-		if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE) {
-			if (!psc_i2s->playback.active) {
-				out_8(&regs->command, 2 << 4);	/* reset rx */
-				out_8(&regs->command, 3 << 4);	/* reset tx */
-				out_8(&regs->command, 4 << 4);	/* reset err */
-			}
-		} else {
-			out_8(&regs->command, 3 << 4);	/* reset tx */
-			out_8(&regs->command, 4 << 4);	/* reset err */
-			if (!psc_i2s->capture.active)
-				out_8(&regs->command, 2 << 4);	/* reset rx */
-		}
-
-		bcom_disable(s->bcom_task);
-		while (!bcom_queue_empty(s->bcom_task))
-			bcom_retrieve_buffer(s->bcom_task, NULL, NULL);
-
-		break;
-
-	default:
-		dev_dbg(psc_i2s->dev, "invalid command\n");
-		return -EINVAL;
-	}
-
-	/* Update interrupt enable settings */
-	imr = 0;
-	if (psc_i2s->playback.active)
-		imr |= MPC52xx_PSC_IMR_TXEMP;
-	if (psc_i2s->capture.active)
-		imr |= MPC52xx_PSC_IMR_ORERR;
-	out_be16(&regs->isr_imr.imr, imr);
-
-	return 0;
-}
-
-/**
- * psc_i2s_shutdown: shutdown the data transfer on a stream
- *
- * Shutdown the PSC if there are no other substreams open.
- */
-static void psc_i2s_shutdown(struct snd_pcm_substream *substream,
-			     struct snd_soc_dai *dai)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
-
-	dev_dbg(psc_i2s->dev, "psc_i2s_shutdown(substream=%p)\n", substream);
-
-	/*
-	 * If this is the last active substream, disable the PSC and release
-	 * the IRQ.
-	 */
-	if (!psc_i2s->playback.active &&
-	    !psc_i2s->capture.active) {
-
-		/* Disable all interrupts and reset the PSC */
-		out_be16(&psc_i2s->psc_regs->isr_imr.imr, 0);
-		out_8(&psc_i2s->psc_regs->command, 3 << 4); /* reset tx */
-		out_8(&psc_i2s->psc_regs->command, 2 << 4); /* reset rx */
-		out_8(&psc_i2s->psc_regs->command, 1 << 4); /* reset mode */
-		out_8(&psc_i2s->psc_regs->command, 4 << 4); /* reset error */
-
-		/* Release irqs */
-		free_irq(psc_i2s->irq, psc_i2s);
-		free_irq(psc_i2s->capture.irq, &psc_i2s->capture);
-		free_irq(psc_i2s->playback.irq, &psc_i2s->playback);
-	}
-}
-
 /**
  * psc_i2s_set_sysclk: set the clock frequency and direction
  *
@@ -495,157 +166,6 @@ static struct snd_soc_dai psc_i2s_dai_template = {
 };
 
 /* ---------------------------------------------------------------------
- * The PSC I2S 'ASoC platform' driver
- *
- * Can be referenced by an 'ASoC machine' driver
- * This driver only deals with the audio bus; it doesn't have any
- * interaction with the attached codec
- */
-
-static const struct snd_pcm_hardware psc_i2s_pcm_hardware = {
-	.info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
-		SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER,
-	.formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE |
-		   SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE,
-	.rate_min = 8000,
-	.rate_max = 48000,
-	.channels_min = 2,
-	.channels_max = 2,
-	.period_bytes_max	= 1024 * 1024,
-	.period_bytes_min	= 32,
-	.periods_min		= 2,
-	.periods_max		= 256,
-	.buffer_bytes_max	= 2 * 1024 * 1024,
-	.fifo_size		= 0,
-};
-
-static int psc_i2s_pcm_open(struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
-	struct psc_i2s_stream *s;
-
-	dev_dbg(psc_i2s->dev, "psc_i2s_pcm_open(substream=%p)\n", substream);
-
-	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-		s = &psc_i2s->capture;
-	else
-		s = &psc_i2s->playback;
-
-	snd_soc_set_runtime_hwparams(substream, &psc_i2s_pcm_hardware);
-
-	s->stream = substream;
-	return 0;
-}
-
-static int psc_i2s_pcm_close(struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
-	struct psc_i2s_stream *s;
-
-	dev_dbg(psc_i2s->dev, "psc_i2s_pcm_close(substream=%p)\n", substream);
-
-	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-		s = &psc_i2s->capture;
-	else
-		s = &psc_i2s->playback;
-
-	s->stream = NULL;
-	return 0;
-}
-
-static snd_pcm_uframes_t
-psc_i2s_pcm_pointer(struct snd_pcm_substream *substream)
-{
-	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
-	struct psc_i2s_stream *s;
-	dma_addr_t count;
-
-	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-		s = &psc_i2s->capture;
-	else
-		s = &psc_i2s->playback;
-
-	count = s->period_current_pt - s->period_start;
-
-	return bytes_to_frames(substream->runtime, count);
-}
-
-static struct snd_pcm_ops psc_i2s_pcm_ops = {
-	.open		= psc_i2s_pcm_open,
-	.close		= psc_i2s_pcm_close,
-	.ioctl		= snd_pcm_lib_ioctl,
-	.pointer	= psc_i2s_pcm_pointer,
-};
-
-static u64 psc_i2s_pcm_dmamask = 0xffffffff;
-static int psc_i2s_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
-			   struct snd_pcm *pcm)
-{
-	struct snd_soc_pcm_runtime *rtd = pcm->private_data;
-	size_t size = psc_i2s_pcm_hardware.buffer_bytes_max;
-	int rc = 0;
-
-	dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_new(card=%p, dai=%p, pcm=%p)\n",
-		card, dai, pcm);
-
-	if (!card->dev->dma_mask)
-		card->dev->dma_mask = &psc_i2s_pcm_dmamask;
-	if (!card->dev->coherent_dma_mask)
-		card->dev->coherent_dma_mask = 0xffffffff;
-
-	if (pcm->streams[0].substream) {
-		rc = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, pcm->dev, size,
-					&pcm->streams[0].substream->dma_buffer);
-		if (rc)
-			goto playback_alloc_err;
-	}
-
-	if (pcm->streams[1].substream) {
-		rc = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, pcm->dev, size,
-					&pcm->streams[1].substream->dma_buffer);
-		if (rc)
-			goto capture_alloc_err;
-	}
-
-	return 0;
-
- capture_alloc_err:
-	if (pcm->streams[0].substream)
-		snd_dma_free_pages(&pcm->streams[0].substream->dma_buffer);
- playback_alloc_err:
-	dev_err(card->dev, "Cannot allocate buffer(s)\n");
-	return -ENOMEM;
-}
-
-static void psc_i2s_pcm_free(struct snd_pcm *pcm)
-{
-	struct snd_soc_pcm_runtime *rtd = pcm->private_data;
-	struct snd_pcm_substream *substream;
-	int stream;
-
-	dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_free(pcm=%p)\n", pcm);
-
-	for (stream = 0; stream < 2; stream++) {
-		substream = pcm->streams[stream].substream;
-		if (substream) {
-			snd_dma_free_pages(&substream->dma_buffer);
-			substream->dma_buffer.area = NULL;
-			substream->dma_buffer.addr = 0;
-		}
-	}
-}
-
-struct snd_soc_platform psc_i2s_pcm_soc_platform = {
-	.name		= "mpc5200-psc-audio",
-	.pcm_ops	= &psc_i2s_pcm_ops,
-	.pcm_new	= &psc_i2s_pcm_new,
-	.pcm_free	= &psc_i2s_pcm_free,
-};
-
-/* ---------------------------------------------------------------------
  * Sysfs attributes for debugging
  */
 

[PATCH V1 2/3] Rename the PSC functions to DMA

[Jon Smirl]

Rename the functions in the mpc5200 DMA file from i2s to dma to reflect the file they are in.

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
---
 sound/soc/fsl/mpc5200_dma.c     |  194 ++++++++++++++++++++-------------------
 sound/soc/fsl/mpc5200_dma.h     |   26 +++--
 sound/soc/fsl/mpc5200_psc_i2s.c |  160 ++++++++++++++++----------------
 3 files changed, 190 insertions(+), 190 deletions(-)

diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c
index cccaff4..c82ef75 100644
--- a/sound/soc/fsl/mpc5200_dma.c
+++ b/sound/soc/fsl/mpc5200_dma.c
@@ -34,21 +34,21 @@ MODULE_LICENSE("GPL");
 /*
  * Interrupt handlers
  */
-static irqreturn_t psc_i2s_status_irq(int irq, void *_psc_i2s)
+static irqreturn_t psc_dma_status_irq(int irq, void *_psc_dma)
 {
-	struct psc_i2s *psc_i2s = _psc_i2s;
-	struct mpc52xx_psc __iomem *regs = psc_i2s->psc_regs;
+	struct psc_dma *psc_dma = _psc_dma;
+	struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
 	u16 isr;
 
 	isr = in_be16(&regs->mpc52xx_psc_isr);
 
 	/* Playback underrun error */
-	if (psc_i2s->playback.active && (isr & MPC52xx_PSC_IMR_TXEMP))
-		psc_i2s->stats.underrun_count++;
+	if (psc_dma->playback.active && (isr & MPC52xx_PSC_IMR_TXEMP))
+		psc_dma->stats.underrun_count++;
 
 	/* Capture overrun error */
-	if (psc_i2s->capture.active && (isr & MPC52xx_PSC_IMR_ORERR))
-		psc_i2s->stats.overrun_count++;
+	if (psc_dma->capture.active && (isr & MPC52xx_PSC_IMR_ORERR))
+		psc_dma->stats.overrun_count++;
 
 	out_8(&regs->command, 4 << 4);	/* reset the error status */
 
@@ -56,7 +56,7 @@ static irqreturn_t psc_i2s_status_irq(int irq, void *_psc_i2s)
 }
 
 /**
- * psc_i2s_bcom_enqueue_next_buffer - Enqueue another audio buffer
+ * psc_dma_bcom_enqueue_next_buffer - Enqueue another audio buffer
  * @s: pointer to stream private data structure
  *
  * Enqueues another audio period buffer into the bestcomm queue.
@@ -65,7 +65,7 @@ static irqreturn_t psc_i2s_status_irq(int irq, void *_psc_i2s)
  * the queue.  Otherwise the enqueue will fail and the audio ring buffer
  * will get out of sync
  */
-static void psc_i2s_bcom_enqueue_next_buffer(struct psc_i2s_stream *s)
+static void psc_dma_bcom_enqueue_next_buffer(struct psc_dma_stream *s)
 {
 	struct bcom_bd *bd;
 
@@ -82,9 +82,9 @@ static void psc_i2s_bcom_enqueue_next_buffer(struct psc_i2s_stream *s)
 }
 
 /* Bestcomm DMA irq handler */
-static irqreturn_t psc_i2s_bcom_irq(int irq, void *_psc_i2s_stream)
+static irqreturn_t psc_dma_bcom_irq(int irq, void *_psc_dma_stream)
 {
-	struct psc_i2s_stream *s = _psc_i2s_stream;
+	struct psc_dma_stream *s = _psc_dma_stream;
 
 	/* For each finished period, dequeue the completed period buffer
 	 * and enqueue a new one in it's place. */
@@ -93,7 +93,7 @@ static irqreturn_t psc_i2s_bcom_irq(int irq, void *_psc_i2s_stream)
 		s->period_current_pt += s->period_bytes;
 		if (s->period_current_pt >= s->period_end)
 			s->period_current_pt = s->period_start;
-		psc_i2s_bcom_enqueue_next_buffer(s);
+		psc_dma_bcom_enqueue_next_buffer(s);
 		bcom_enable(s->bcom_task);
 	}
 
@@ -106,39 +106,39 @@ static irqreturn_t psc_i2s_bcom_irq(int irq, void *_psc_i2s_stream)
 }
 
 /**
- * psc_i2s_startup: create a new substream
+ * psc_dma_startup: create a new substream
  *
  * This is the first function called when a stream is opened.
  *
  * If this is the first stream open, then grab the IRQ and program most of
  * the PSC registers.
  */
-int psc_i2s_startup(struct snd_pcm_substream *substream,
+int psc_dma_startup(struct snd_pcm_substream *substream,
 			   struct snd_soc_dai *dai)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
+	struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
 	int rc;
 
-	dev_dbg(psc_i2s->dev, "psc_i2s_startup(substream=%p)\n", substream);
+	dev_dbg(psc_dma->dev, "psc_dma_startup(substream=%p)\n", substream);
 
-	if (!psc_i2s->playback.active &&
-	    !psc_i2s->capture.active) {
+	if (!psc_dma->playback.active &&
+	    !psc_dma->capture.active) {
 		/* Setup the IRQs */
-		rc = request_irq(psc_i2s->irq, &psc_i2s_status_irq, IRQF_SHARED,
-				 "psc-i2s-status", psc_i2s);
-		rc |= request_irq(psc_i2s->capture.irq,
-				  &psc_i2s_bcom_irq, IRQF_SHARED,
-				  "psc-i2s-capture", &psc_i2s->capture);
-		rc |= request_irq(psc_i2s->playback.irq,
-				  &psc_i2s_bcom_irq, IRQF_SHARED,
-				  "psc-i2s-playback", &psc_i2s->playback);
+		rc = request_irq(psc_dma->irq, &psc_dma_status_irq, IRQF_SHARED,
+				 "psc-dma-status", psc_dma);
+		rc |= request_irq(psc_dma->capture.irq,
+				  &psc_dma_bcom_irq, IRQF_SHARED,
+				  "psc-dma-capture", &psc_dma->capture);
+		rc |= request_irq(psc_dma->playback.irq,
+				  &psc_dma_bcom_irq, IRQF_SHARED,
+				  "psc-dma-playback", &psc_dma->playback);
 		if (rc) {
-			free_irq(psc_i2s->irq, psc_i2s);
-			free_irq(psc_i2s->capture.irq,
-				 &psc_i2s->capture);
-			free_irq(psc_i2s->playback.irq,
-				 &psc_i2s->playback);
+			free_irq(psc_dma->irq, psc_dma);
+			free_irq(psc_dma->capture.irq,
+				 &psc_dma->capture);
+			free_irq(psc_dma->playback.irq,
+				 &psc_dma->playback);
 			return -ENODEV;
 		}
 	}
@@ -146,7 +146,7 @@ int psc_i2s_startup(struct snd_pcm_substream *substream,
 	return 0;
 }
 
-int psc_i2s_hw_free(struct snd_pcm_substream *substream,
+int psc_dma_hw_free(struct snd_pcm_substream *substream,
 			   struct snd_soc_dai *dai)
 {
 	snd_pcm_set_runtime_buffer(substream, NULL);
@@ -154,29 +154,29 @@ int psc_i2s_hw_free(struct snd_pcm_substream *substream,
 }
 
 /**
- * psc_i2s_trigger: start and stop the DMA transfer.
+ * psc_dma_trigger: start and stop the DMA transfer.
  *
  * This function is called by ALSA to start, stop, pause, and resume the DMA
  * transfer of data.
  */
-int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
 			   struct snd_soc_dai *dai)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
+	struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
 	struct snd_pcm_runtime *runtime = substream->runtime;
-	struct psc_i2s_stream *s;
-	struct mpc52xx_psc __iomem *regs = psc_i2s->psc_regs;
+	struct psc_dma_stream *s;
+	struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
 	u16 imr;
 	u8 psc_cmd;
 	unsigned long flags;
 
 	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-		s = &psc_i2s->capture;
+		s = &psc_dma->capture;
 	else
-		s = &psc_i2s->playback;
+		s = &psc_dma->playback;
 
-	dev_dbg(psc_i2s->dev, "psc_i2s_trigger(substream=%p, cmd=%i)"
+	dev_dbg(psc_dma->dev, "psc_dma_trigger(substream=%p, cmd=%i)"
 		" stream_id=%i\n",
 		substream, cmd, substream->pstr->stream);
 
@@ -207,14 +207,14 @@ int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
 		else
 			bcom_gen_bd_tx_reset(s->bcom_task);
 		while (!bcom_queue_full(s->bcom_task))
-			psc_i2s_bcom_enqueue_next_buffer(s);
+			psc_dma_bcom_enqueue_next_buffer(s);
 		bcom_enable(s->bcom_task);
 
-		/* Due to errata in the i2s mode; need to line up enabling
+		/* Due to errata in the dma mode; need to line up enabling
 		 * the transmitter with a transition on the frame sync
 		 * line */
 
-		spin_lock_irqsave(&psc_i2s->lock, flags);
+		spin_lock_irqsave(&psc_dma->lock, flags);
 		/* first make sure it is low */
 		while ((in_8(&regs->ipcr_acr.ipcr) & 0x80) != 0)
 			;
@@ -228,7 +228,7 @@ int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
 		if (substream->pstr->stream == SNDRV_PCM_STREAM_PLAYBACK)
 			psc_cmd |= MPC52xx_PSC_TX_ENABLE;
 		out_8(&regs->command, psc_cmd);
-		spin_unlock_irqrestore(&psc_i2s->lock, flags);
+		spin_unlock_irqrestore(&psc_dma->lock, flags);
 
 		break;
 
@@ -236,7 +236,7 @@ int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
 		/* Turn off the PSC */
 		s->active = 0;
 		if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE) {
-			if (!psc_i2s->playback.active) {
+			if (!psc_dma->playback.active) {
 				out_8(&regs->command, 2 << 4);	/* reset rx */
 				out_8(&regs->command, 3 << 4);	/* reset tx */
 				out_8(&regs->command, 4 << 4);	/* reset err */
@@ -244,7 +244,7 @@ int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
 		} else {
 			out_8(&regs->command, 3 << 4);	/* reset tx */
 			out_8(&regs->command, 4 << 4);	/* reset err */
-			if (!psc_i2s->capture.active)
+			if (!psc_dma->capture.active)
 				out_8(&regs->command, 2 << 4);	/* reset rx */
 		}
 
@@ -255,15 +255,15 @@ int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
 		break;
 
 	default:
-		dev_dbg(psc_i2s->dev, "invalid command\n");
+		dev_dbg(psc_dma->dev, "invalid command\n");
 		return -EINVAL;
 	}
 
 	/* Update interrupt enable settings */
 	imr = 0;
-	if (psc_i2s->playback.active)
+	if (psc_dma->playback.active)
 		imr |= MPC52xx_PSC_IMR_TXEMP;
-	if (psc_i2s->capture.active)
+	if (psc_dma->capture.active)
 		imr |= MPC52xx_PSC_IMR_ORERR;
 	out_be16(&regs->isr_imr.imr, imr);
 
@@ -271,36 +271,36 @@ int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
 }
 
 /**
- * psc_i2s_shutdown: shutdown the data transfer on a stream
+ * psc_dma_shutdown: shutdown the data transfer on a stream
  *
  * Shutdown the PSC if there are no other substreams open.
  */
-void psc_i2s_shutdown(struct snd_pcm_substream *substream,
+void psc_dma_shutdown(struct snd_pcm_substream *substream,
 			     struct snd_soc_dai *dai)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
+	struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
 
-	dev_dbg(psc_i2s->dev, "psc_i2s_shutdown(substream=%p)\n", substream);
+	dev_dbg(psc_dma->dev, "psc_dma_shutdown(substream=%p)\n", substream);
 
 	/*
 	 * If this is the last active substream, disable the PSC and release
 	 * the IRQ.
 	 */
-	if (!psc_i2s->playback.active &&
-	    !psc_i2s->capture.active) {
+	if (!psc_dma->playback.active &&
+	    !psc_dma->capture.active) {
 
 		/* Disable all interrupts and reset the PSC */
-		out_be16(&psc_i2s->psc_regs->isr_imr.imr, 0);
-		out_8(&psc_i2s->psc_regs->command, 3 << 4); /* reset tx */
-		out_8(&psc_i2s->psc_regs->command, 2 << 4); /* reset rx */
-		out_8(&psc_i2s->psc_regs->command, 1 << 4); /* reset mode */
-		out_8(&psc_i2s->psc_regs->command, 4 << 4); /* reset error */
+		out_be16(&psc_dma->psc_regs->isr_imr.imr, 0);
+		out_8(&psc_dma->psc_regs->command, 3 << 4); /* reset tx */
+		out_8(&psc_dma->psc_regs->command, 2 << 4); /* reset rx */
+		out_8(&psc_dma->psc_regs->command, 1 << 4); /* reset mode */
+		out_8(&psc_dma->psc_regs->command, 4 << 4); /* reset error */
 
 		/* Release irqs */
-		free_irq(psc_i2s->irq, psc_i2s);
-		free_irq(psc_i2s->capture.irq, &psc_i2s->capture);
-		free_irq(psc_i2s->playback.irq, &psc_i2s->playback);
+		free_irq(psc_dma->irq, psc_dma);
+		free_irq(psc_dma->capture.irq, &psc_dma->capture);
+		free_irq(psc_dma->playback.irq, &psc_dma->playback);
 	}
 }
 
@@ -312,7 +312,7 @@ void psc_i2s_shutdown(struct snd_pcm_substream *substream,
  * interaction with the attached codec
  */
 
-static const struct snd_pcm_hardware psc_i2s_pcm_hardware = {
+static const struct snd_pcm_hardware psc_dma_pcm_hardware = {
 	.info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
 		SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO_BLOCK_TRANSFER,
 	.formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE |
@@ -329,80 +329,80 @@ static const struct snd_pcm_hardware psc_i2s_pcm_hardware = {
 	.fifo_size		= 0,
 };
 
-static int psc_i2s_pcm_open(struct snd_pcm_substream *substream)
+static int psc_dma_pcm_open(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
-	struct psc_i2s_stream *s;
+	struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
+	struct psc_dma_stream *s;
 
-	dev_dbg(psc_i2s->dev, "psc_i2s_pcm_open(substream=%p)\n", substream);
+	dev_dbg(psc_dma->dev, "psc_dma_pcm_open(substream=%p)\n", substream);
 
 	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-		s = &psc_i2s->capture;
+		s = &psc_dma->capture;
 	else
-		s = &psc_i2s->playback;
+		s = &psc_dma->playback;
 
-	snd_soc_set_runtime_hwparams(substream, &psc_i2s_pcm_hardware);
+	snd_soc_set_runtime_hwparams(substream, &psc_dma_pcm_hardware);
 
 	s->stream = substream;
 	return 0;
 }
 
-static int psc_i2s_pcm_close(struct snd_pcm_substream *substream)
+static int psc_dma_pcm_close(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
-	struct psc_i2s_stream *s;
+	struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
+	struct psc_dma_stream *s;
 
-	dev_dbg(psc_i2s->dev, "psc_i2s_pcm_close(substream=%p)\n", substream);
+	dev_dbg(psc_dma->dev, "psc_dma_pcm_close(substream=%p)\n", substream);
 
 	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-		s = &psc_i2s->capture;
+		s = &psc_dma->capture;
 	else
-		s = &psc_i2s->playback;
+		s = &psc_dma->playback;
 
 	s->stream = NULL;
 	return 0;
 }
 
 static snd_pcm_uframes_t
-psc_i2s_pcm_pointer(struct snd_pcm_substream *substream)
+psc_dma_pcm_pointer(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
-	struct psc_i2s_stream *s;
+	struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
+	struct psc_dma_stream *s;
 	dma_addr_t count;
 
 	if (substream->pstr->stream == SNDRV_PCM_STREAM_CAPTURE)
-		s = &psc_i2s->capture;
+		s = &psc_dma->capture;
 	else
-		s = &psc_i2s->playback;
+		s = &psc_dma->playback;
 
 	count = s->period_current_pt - s->period_start;
 
 	return bytes_to_frames(substream->runtime, count);
 }
 
-static struct snd_pcm_ops psc_i2s_pcm_ops = {
-	.open		= psc_i2s_pcm_open,
-	.close		= psc_i2s_pcm_close,
+static struct snd_pcm_ops psc_dma_pcm_ops = {
+	.open		= psc_dma_pcm_open,
+	.close		= psc_dma_pcm_close,
 	.ioctl		= snd_pcm_lib_ioctl,
-	.pointer	= psc_i2s_pcm_pointer,
+	.pointer	= psc_dma_pcm_pointer,
 };
 
-static u64 psc_i2s_pcm_dmamask = 0xffffffff;
-static int psc_i2s_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
+static u64 psc_dma_pcm_dmamask = 0xffffffff;
+static int psc_dma_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
 			   struct snd_pcm *pcm)
 {
 	struct snd_soc_pcm_runtime *rtd = pcm->private_data;
-	size_t size = psc_i2s_pcm_hardware.buffer_bytes_max;
+	size_t size = psc_dma_pcm_hardware.buffer_bytes_max;
 	int rc = 0;
 
-	dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_new(card=%p, dai=%p, pcm=%p)\n",
+	dev_dbg(rtd->socdev->dev, "psc_dma_pcm_new(card=%p, dai=%p, pcm=%p)\n",
 		card, dai, pcm);
 
 	if (!card->dev->dma_mask)
-		card->dev->dma_mask = &psc_i2s_pcm_dmamask;
+		card->dev->dma_mask = &psc_dma_pcm_dmamask;
 	if (!card->dev->coherent_dma_mask)
 		card->dev->coherent_dma_mask = 0xffffffff;
 
@@ -430,13 +430,13 @@ static int psc_i2s_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
 	return -ENOMEM;
 }
 
-static void psc_i2s_pcm_free(struct snd_pcm *pcm)
+static void psc_dma_pcm_free(struct snd_pcm *pcm)
 {
 	struct snd_soc_pcm_runtime *rtd = pcm->private_data;
 	struct snd_pcm_substream *substream;
 	int stream;
 
-	dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_free(pcm=%p)\n", pcm);
+	dev_dbg(rtd->socdev->dev, "psc_dma_pcm_free(pcm=%p)\n", pcm);
 
 	for (stream = 0; stream < 2; stream++) {
 		substream = pcm->streams[stream].substream;
@@ -448,10 +448,10 @@ static void psc_i2s_pcm_free(struct snd_pcm *pcm)
 	}
 }
 
-struct snd_soc_platform psc_i2s_pcm_soc_platform = {
+struct snd_soc_platform psc_dma_pcm_soc_platform = {
 	.name		= "mpc5200-psc-audio",
-	.pcm_ops	= &psc_i2s_pcm_ops,
-	.pcm_new	= &psc_i2s_pcm_new,
-	.pcm_free	= &psc_i2s_pcm_free,
+	.pcm_ops	= &psc_dma_pcm_ops,
+	.pcm_new	= &psc_dma_pcm_new,
+	.pcm_free	= &psc_dma_pcm_free,
 };
 
diff --git a/sound/soc/fsl/mpc5200_dma.h b/sound/soc/fsl/mpc5200_dma.h
index 9a19e8a..a33232c 100644
--- a/sound/soc/fsl/mpc5200_dma.h
+++ b/sound/soc/fsl/mpc5200_dma.h
@@ -6,9 +6,9 @@
 #define __SOUND_SOC_FSL_MPC5200_DMA_H__
 
 /**
- * psc_i2s_stream - Data specific to a single stream (playback or capture)
+ * psc_dma_stream - Data specific to a single stream (playback or capture)
  * @active:		flag indicating if the stream is active
- * @psc_i2s:		pointer back to parent psc_i2s data structure
+ * @psc_dma:		pointer back to parent psc_dma data structure
  * @bcom_task:		bestcomm task structure
  * @irq:		irq number for bestcomm task
  * @period_start:	physical address of start of DMA region
@@ -16,9 +16,9 @@
  * @period_next_pt:	physical address of next DMA buffer to enqueue
  * @period_bytes:	size of DMA period in bytes
  */
-struct psc_i2s_stream {
+struct psc_dma_stream {
 	int active;
-	struct psc_i2s *psc_i2s;
+	struct psc_dma *psc_dma;
 	struct bcom_task *bcom_task;
 	int irq;
 	struct snd_pcm_substream *stream;
@@ -30,7 +30,7 @@ struct psc_i2s_stream {
 };
 
 /**
- * psc_i2s - Private driver data
+ * psc_dma - Private driver data
  * @name: short name for this device ("PSC0", "PSC1", etc)
  * @psc_regs: pointer to the PSC's registers
  * @fifo_regs: pointer to the PSC's FIFO registers
@@ -42,7 +42,7 @@ struct psc_i2s_stream {
  * @playback: Playback stream context data
  * @capture: Capture stream context data
  */
-struct psc_i2s {
+struct psc_dma {
 	char name[32];
 	struct mpc52xx_psc __iomem *psc_regs;
 	struct mpc52xx_psc_fifo __iomem *fifo_regs;
@@ -53,8 +53,8 @@ struct psc_i2s {
 	u32 sicr;
 
 	/* per-stream data */
-	struct psc_i2s_stream playback;
-	struct psc_i2s_stream capture;
+	struct psc_dma_stream playback;
+	struct psc_dma_stream capture;
 
 	/* Statistics */
 	struct {
@@ -64,18 +64,18 @@ struct psc_i2s {
 };
 
 
-int psc_i2s_startup(struct snd_pcm_substream *substream,
+int psc_dma_startup(struct snd_pcm_substream *substream,
 			   struct snd_soc_dai *dai);
 
-int psc_i2s_hw_free(struct snd_pcm_substream *substream,
+int psc_dma_hw_free(struct snd_pcm_substream *substream,
 			   struct snd_soc_dai *dai);
 
-void psc_i2s_shutdown(struct snd_pcm_substream *substream,
+void psc_dma_shutdown(struct snd_pcm_substream *substream,
 			     struct snd_soc_dai *dai);
 
-int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
+int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
 			   struct snd_soc_dai *dai);
 
-extern struct snd_soc_platform psc_i2s_pcm_soc_platform;
+extern struct snd_soc_platform psc_dma_pcm_soc_platform;
 
 #endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */
diff --git a/sound/soc/fsl/mpc5200_psc_i2s.c b/sound/soc/fsl/mpc5200_psc_i2s.c
index 8974b53..12a7917 100644
--- a/sound/soc/fsl/mpc5200_psc_i2s.c
+++ b/sound/soc/fsl/mpc5200_psc_i2s.c
@@ -54,10 +54,10 @@ static int psc_i2s_hw_params(struct snd_pcm_substream *substream,
 				 struct snd_soc_dai *dai)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-	struct psc_i2s *psc_i2s = rtd->dai->cpu_dai->private_data;
+	struct psc_dma *psc_dma = rtd->dai->cpu_dai->private_data;
 	u32 mode;
 
-	dev_dbg(psc_i2s->dev, "%s(substream=%p) p_size=%i p_bytes=%i"
+	dev_dbg(psc_dma->dev, "%s(substream=%p) p_size=%i p_bytes=%i"
 		" periods=%i buffer_size=%i  buffer_bytes=%i\n",
 		__func__, substream, params_period_size(params),
 		params_period_bytes(params), params_periods(params),
@@ -77,10 +77,10 @@ static int psc_i2s_hw_params(struct snd_pcm_substream *substream,
 		mode = MPC52xx_PSC_SICR_SIM_CODEC_32;
 		break;
 	default:
-		dev_dbg(psc_i2s->dev, "invalid format\n");
+		dev_dbg(psc_dma->dev, "invalid format\n");
 		return -EINVAL;
 	}
-	out_be32(&psc_i2s->psc_regs->sicr, psc_i2s->sicr | mode);
+	out_be32(&psc_dma->psc_regs->sicr, psc_dma->sicr | mode);
 
 	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
 
@@ -104,8 +104,8 @@ static int psc_i2s_hw_params(struct snd_pcm_substream *substream,
 static int psc_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
 			      int clk_id, unsigned int freq, int dir)
 {
-	struct psc_i2s *psc_i2s = cpu_dai->private_data;
-	dev_dbg(psc_i2s->dev, "psc_i2s_set_sysclk(cpu_dai=%p, dir=%i)\n",
+	struct psc_dma *psc_dma = cpu_dai->private_data;
+	dev_dbg(psc_dma->dev, "psc_i2s_set_sysclk(cpu_dai=%p, dir=%i)\n",
 				cpu_dai, dir);
 	return (dir == SND_SOC_CLOCK_IN) ? 0 : -EINVAL;
 }
@@ -123,8 +123,8 @@ static int psc_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
  */
 static int psc_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int format)
 {
-	struct psc_i2s *psc_i2s = cpu_dai->private_data;
-	dev_dbg(psc_i2s->dev, "psc_i2s_set_fmt(cpu_dai=%p, format=%i)\n",
+	struct psc_dma *psc_dma = cpu_dai->private_data;
+	dev_dbg(psc_dma->dev, "psc_i2s_set_fmt(cpu_dai=%p, format=%i)\n",
 				cpu_dai, format);
 	return (format == SND_SOC_DAIFMT_I2S) ? 0 : -EINVAL;
 }
@@ -140,11 +140,11 @@ static int psc_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int format)
  * psc_i2s_dai_template: template CPU Digital Audio Interface
  */
 static struct snd_soc_dai_ops psc_i2s_dai_ops = {
-	.startup	= psc_i2s_startup,
+	.startup	= psc_dma_startup,
 	.hw_params	= psc_i2s_hw_params,
-	.hw_free	= psc_i2s_hw_free,
-	.shutdown	= psc_i2s_shutdown,
-	.trigger	= psc_i2s_trigger,
+	.hw_free	= psc_dma_hw_free,
+	.shutdown	= psc_dma_shutdown,
+	.trigger	= psc_dma_trigger,
 	.set_sysclk	= psc_i2s_set_sysclk,
 	.set_fmt	= psc_i2s_set_fmt,
 };
@@ -172,24 +172,24 @@ static struct snd_soc_dai psc_i2s_dai_template = {
 static ssize_t psc_i2s_status_show(struct device *dev,
 			   struct device_attribute *attr, char *buf)
 {
-	struct psc_i2s *psc_i2s = dev_get_drvdata(dev);
+	struct psc_dma *psc_dma = dev_get_drvdata(dev);
 
 	return sprintf(buf, "status=%.4x sicr=%.8x rfnum=%i rfstat=0x%.4x "
 			"tfnum=%i tfstat=0x%.4x\n",
-			in_be16(&psc_i2s->psc_regs->sr_csr.status),
-			in_be32(&psc_i2s->psc_regs->sicr),
-			in_be16(&psc_i2s->fifo_regs->rfnum) & 0x1ff,
-			in_be16(&psc_i2s->fifo_regs->rfstat),
-			in_be16(&psc_i2s->fifo_regs->tfnum) & 0x1ff,
-			in_be16(&psc_i2s->fifo_regs->tfstat));
+			in_be16(&psc_dma->psc_regs->sr_csr.status),
+			in_be32(&psc_dma->psc_regs->sicr),
+			in_be16(&psc_dma->fifo_regs->rfnum) & 0x1ff,
+			in_be16(&psc_dma->fifo_regs->rfstat),
+			in_be16(&psc_dma->fifo_regs->tfnum) & 0x1ff,
+			in_be16(&psc_dma->fifo_regs->tfstat));
 }
 
-static int *psc_i2s_get_stat_attr(struct psc_i2s *psc_i2s, const char *name)
+static int *psc_i2s_get_stat_attr(struct psc_dma *psc_dma, const char *name)
 {
 	if (strcmp(name, "playback_underrun") == 0)
-		return &psc_i2s->stats.underrun_count;
+		return &psc_dma->stats.underrun_count;
 	if (strcmp(name, "capture_overrun") == 0)
-		return &psc_i2s->stats.overrun_count;
+		return &psc_dma->stats.overrun_count;
 
 	return NULL;
 }
@@ -197,10 +197,10 @@ static int *psc_i2s_get_stat_attr(struct psc_i2s *psc_i2s, const char *name)
 static ssize_t psc_i2s_stat_show(struct device *dev,
 				 struct device_attribute *attr, char *buf)
 {
-	struct psc_i2s *psc_i2s = dev_get_drvdata(dev);
+	struct psc_dma *psc_dma = dev_get_drvdata(dev);
 	int *attrib;
 
-	attrib = psc_i2s_get_stat_attr(psc_i2s, attr->attr.name);
+	attrib = psc_i2s_get_stat_attr(psc_dma, attr->attr.name);
 	if (!attrib)
 		return 0;
 
@@ -212,10 +212,10 @@ static ssize_t psc_i2s_stat_store(struct device *dev,
 				  const char *buf,
 				  size_t count)
 {
-	struct psc_i2s *psc_i2s = dev_get_drvdata(dev);
+	struct psc_dma *psc_dma = dev_get_drvdata(dev);
 	int *attrib;
 
-	attrib = psc_i2s_get_stat_attr(psc_i2s, attr->attr.name);
+	attrib = psc_i2s_get_stat_attr(psc_dma, attr->attr.name);
 	if (!attrib)
 		return 0;
 
@@ -238,7 +238,7 @@ static int __devinit psc_i2s_of_probe(struct of_device *op,
 				      const struct of_device_id *match)
 {
 	phys_addr_t fifo;
-	struct psc_i2s *psc_i2s;
+	struct psc_dma *psc_dma;
 	struct resource res;
 	int size, psc_id, irq, rc;
 	const __be32 *prop;
@@ -265,56 +265,56 @@ static int __devinit psc_i2s_of_probe(struct of_device *op,
 	}
 
 	/* Allocate and initialize the driver private data */
-	psc_i2s = kzalloc(sizeof *psc_i2s, GFP_KERNEL);
-	if (!psc_i2s) {
+	psc_dma = kzalloc(sizeof *psc_dma, GFP_KERNEL);
+	if (!psc_dma) {
 		iounmap(regs);
 		return -ENOMEM;
 	}
-	spin_lock_init(&psc_i2s->lock);
-	psc_i2s->irq = irq;
-	psc_i2s->psc_regs = regs;
-	psc_i2s->fifo_regs = regs + sizeof *psc_i2s->psc_regs;
-	psc_i2s->dev = &op->dev;
-	psc_i2s->playback.psc_i2s = psc_i2s;
-	psc_i2s->capture.psc_i2s = psc_i2s;
-	snprintf(psc_i2s->name, sizeof psc_i2s->name, "PSC%u", psc_id+1);
+	spin_lock_init(&psc_dma->lock);
+	psc_dma->irq = irq;
+	psc_dma->psc_regs = regs;
+	psc_dma->fifo_regs = regs + sizeof *psc_dma->psc_regs;
+	psc_dma->dev = &op->dev;
+	psc_dma->playback.psc_dma = psc_dma;
+	psc_dma->capture.psc_dma = psc_dma;
+	snprintf(psc_dma->name, sizeof psc_dma->name, "PSC%u", psc_id+1);
 
 	/* Fill out the CPU DAI structure */
-	memcpy(&psc_i2s->dai, &psc_i2s_dai_template, sizeof psc_i2s->dai);
-	psc_i2s->dai.private_data = psc_i2s;
-	psc_i2s->dai.name = psc_i2s->name;
-	psc_i2s->dai.id = psc_id;
+	memcpy(&psc_dma->dai, &psc_i2s_dai_template, sizeof psc_dma->dai);
+	psc_dma->dai.private_data = psc_dma;
+	psc_dma->dai.name = psc_dma->name;
+	psc_dma->dai.id = psc_id;
 
 	/* Find the address of the fifo data registers and setup the
 	 * DMA tasks */
 	fifo = res.start + offsetof(struct mpc52xx_psc, buffer.buffer_32);
-	psc_i2s->capture.bcom_task =
+	psc_dma->capture.bcom_task =
 		bcom_psc_gen_bd_rx_init(psc_id, 10, fifo, 512);
-	psc_i2s->playback.bcom_task =
+	psc_dma->playback.bcom_task =
 		bcom_psc_gen_bd_tx_init(psc_id, 10, fifo);
-	if (!psc_i2s->capture.bcom_task ||
-	    !psc_i2s->playback.bcom_task) {
+	if (!psc_dma->capture.bcom_task ||
+	    !psc_dma->playback.bcom_task) {
 		dev_err(&op->dev, "Could not allocate bestcomm tasks\n");
 		iounmap(regs);
-		kfree(psc_i2s);
+		kfree(psc_dma);
 		return -ENODEV;
 	}
 
 	/* Disable all interrupts and reset the PSC */
-	out_be16(&psc_i2s->psc_regs->isr_imr.imr, 0);
-	out_8(&psc_i2s->psc_regs->command, 3 << 4); /* reset transmitter */
-	out_8(&psc_i2s->psc_regs->command, 2 << 4); /* reset receiver */
-	out_8(&psc_i2s->psc_regs->command, 1 << 4); /* reset mode */
-	out_8(&psc_i2s->psc_regs->command, 4 << 4); /* reset error */
+	out_be16(&psc_dma->psc_regs->isr_imr.imr, 0);
+	out_8(&psc_dma->psc_regs->command, 3 << 4); /* reset transmitter */
+	out_8(&psc_dma->psc_regs->command, 2 << 4); /* reset receiver */
+	out_8(&psc_dma->psc_regs->command, 1 << 4); /* reset mode */
+	out_8(&psc_dma->psc_regs->command, 4 << 4); /* reset error */
 
 	/* Configure the serial interface mode; defaulting to CODEC8 mode */
-	psc_i2s->sicr = MPC52xx_PSC_SICR_DTS1 | MPC52xx_PSC_SICR_I2S |
+	psc_dma->sicr = MPC52xx_PSC_SICR_DTS1 | MPC52xx_PSC_SICR_I2S |
 			MPC52xx_PSC_SICR_CLKPOL;
 	if (of_get_property(op->node, "fsl,cellslave", NULL))
-		psc_i2s->sicr |= MPC52xx_PSC_SICR_CELLSLAVE |
+		psc_dma->sicr |= MPC52xx_PSC_SICR_CELLSLAVE |
 				 MPC52xx_PSC_SICR_GENCLK;
-	out_be32(&psc_i2s->psc_regs->sicr,
-		 psc_i2s->sicr | MPC52xx_PSC_SICR_SIM_CODEC_8);
+	out_be32(&psc_dma->psc_regs->sicr,
+		 psc_dma->sicr | MPC52xx_PSC_SICR_SIM_CODEC_8);
 
 	/* Check for the codec handle.  If it is not present then we
 	 * are done */
@@ -325,54 +325,54 @@ static int __devinit psc_i2s_of_probe(struct of_device *op,
 	 * First write: RxRdy (FIFO Alarm) generates rx FIFO irq
 	 * Second write: register Normal mode for non loopback
 	 */
-	out_8(&psc_i2s->psc_regs->mode, 0);
-	out_8(&psc_i2s->psc_regs->mode, 0);
+	out_8(&psc_dma->psc_regs->mode, 0);
+	out_8(&psc_dma->psc_regs->mode, 0);
 
 	/* Set the TX and RX fifo alarm thresholds */
-	out_be16(&psc_i2s->fifo_regs->rfalarm, 0x100);
-	out_8(&psc_i2s->fifo_regs->rfcntl, 0x4);
-	out_be16(&psc_i2s->fifo_regs->tfalarm, 0x100);
-	out_8(&psc_i2s->fifo_regs->tfcntl, 0x7);
+	out_be16(&psc_dma->fifo_regs->rfalarm, 0x100);
+	out_8(&psc_dma->fifo_regs->rfcntl, 0x4);
+	out_be16(&psc_dma->fifo_regs->tfalarm, 0x100);
+	out_8(&psc_dma->fifo_regs->tfcntl, 0x7);
 
 	/* Lookup the IRQ numbers */
-	psc_i2s->playback.irq =
-		bcom_get_task_irq(psc_i2s->playback.bcom_task);
-	psc_i2s->capture.irq =
-		bcom_get_task_irq(psc_i2s->capture.bcom_task);
+	psc_dma->playback.irq =
+		bcom_get_task_irq(psc_dma->playback.bcom_task);
+	psc_dma->capture.irq =
+		bcom_get_task_irq(psc_dma->capture.bcom_task);
 
 	/* Save what we've done so it can be found again later */
-	dev_set_drvdata(&op->dev, psc_i2s);
+	dev_set_drvdata(&op->dev, psc_dma);
 
 	/* Register the SYSFS files */
-	rc = device_create_file(psc_i2s->dev, &dev_attr_status);
-	rc |= device_create_file(psc_i2s->dev, &dev_attr_capture_overrun);
-	rc |= device_create_file(psc_i2s->dev, &dev_attr_playback_underrun);
+	rc = device_create_file(psc_dma->dev, &dev_attr_status);
+	rc |= device_create_file(psc_dma->dev, &dev_attr_capture_overrun);
+	rc |= device_create_file(psc_dma->dev, &dev_attr_playback_underrun);
 	if (rc)
-		dev_info(psc_i2s->dev, "error creating sysfs files\n");
+		dev_info(psc_dma->dev, "error creating sysfs files\n");
 
-	snd_soc_register_platform(&psc_i2s_pcm_soc_platform);
+	snd_soc_register_platform(&psc_dma_pcm_soc_platform);
 
 	/* Tell the ASoC OF helpers about it */
-	of_snd_soc_register_platform(&psc_i2s_pcm_soc_platform, op->node,
-				     &psc_i2s->dai);
+	of_snd_soc_register_platform(&psc_dma_pcm_soc_platform, op->node,
+				     &psc_dma->dai);
 
 	return 0;
 }
 
 static int __devexit psc_i2s_of_remove(struct of_device *op)
 {
-	struct psc_i2s *psc_i2s = dev_get_drvdata(&op->dev);
+	struct psc_dma *psc_dma = dev_get_drvdata(&op->dev);
 
 	dev_dbg(&op->dev, "psc_i2s_remove()\n");
 
-	snd_soc_unregister_platform(&psc_i2s_pcm_soc_platform);
+	snd_soc_unregister_platform(&psc_dma_pcm_soc_platform);
 
-	bcom_gen_bd_rx_release(psc_i2s->capture.bcom_task);
-	bcom_gen_bd_tx_release(psc_i2s->playback.bcom_task);
+	bcom_gen_bd_rx_release(psc_dma->capture.bcom_task);
+	bcom_gen_bd_tx_release(psc_dma->playback.bcom_task);
 
-	iounmap(psc_i2s->psc_regs);
-	iounmap(psc_i2s->fifo_regs);
-	kfree(psc_i2s);
+	iounmap(psc_dma->psc_regs);
+	iounmap(psc_dma->fifo_regs);
+	kfree(psc_dma);
 	dev_set_drvdata(&op->dev, NULL);
 
 	return 0;

[PATCH V1 3/3] Rename exports in mpc5200_dma.c

[Jon Smirl]

Rename the public DMA exports into the global name space so that the DMA code can be built as a module.

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
---
 sound/soc/fsl/mpc5200_dma.c     |   18 ++++++++++++------
 sound/soc/fsl/mpc5200_dma.h     |   10 +++++-----
 sound/soc/fsl/mpc5200_psc_i2s.c |   14 +++++++-------
 3 files changed, 24 insertions(+), 18 deletions(-)

diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c
index c82ef75..df73755 100644
--- a/sound/soc/fsl/mpc5200_dma.c
+++ b/sound/soc/fsl/mpc5200_dma.c
@@ -113,7 +113,7 @@ static irqreturn_t psc_dma_bcom_irq(int irq, void *_psc_dma_stream)
  * If this is the first stream open, then grab the IRQ and program most of
  * the PSC registers.
  */
-int psc_dma_startup(struct snd_pcm_substream *substream,
+int mpc5200_dma_startup(struct snd_pcm_substream *substream,
 			   struct snd_soc_dai *dai)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
@@ -145,13 +145,16 @@ int psc_dma_startup(struct snd_pcm_substream *substream,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mpc5200_dma_startup);
 
-int psc_dma_hw_free(struct snd_pcm_substream *substream,
+int mpc5200_dma_hw_free(struct snd_pcm_substream *substream,
 			   struct snd_soc_dai *dai)
 {
 	snd_pcm_set_runtime_buffer(substream, NULL);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mpc5200_dma_hw_free);
+
 
 /**
  * psc_dma_trigger: start and stop the DMA transfer.
@@ -159,7 +162,7 @@ int psc_dma_hw_free(struct snd_pcm_substream *substream,
  * This function is called by ALSA to start, stop, pause, and resume the DMA
  * transfer of data.
  */
-int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
+int mpc5200_dma_trigger(struct snd_pcm_substream *substream, int cmd,
 			   struct snd_soc_dai *dai)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
@@ -269,13 +272,15 @@ int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mpc5200_dma_trigger);
+
 
 /**
  * psc_dma_shutdown: shutdown the data transfer on a stream
  *
  * Shutdown the PSC if there are no other substreams open.
  */
-void psc_dma_shutdown(struct snd_pcm_substream *substream,
+void mpc5200_dma_shutdown(struct snd_pcm_substream *substream,
 			     struct snd_soc_dai *dai)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
@@ -303,6 +308,7 @@ void psc_dma_shutdown(struct snd_pcm_substream *substream,
 		free_irq(psc_dma->playback.irq, &psc_dma->playback);
 	}
 }
+EXPORT_SYMBOL_GPL(mpc5200_dma_shutdown);
 
 /* ---------------------------------------------------------------------
  * The PSC DMA 'ASoC platform' driver
@@ -448,10 +454,10 @@ static void psc_dma_pcm_free(struct snd_pcm *pcm)
 	}
 }
 
-struct snd_soc_platform psc_dma_pcm_soc_platform = {
+struct snd_soc_platform mpc5200_dma_platform = {
 	.name		= "mpc5200-psc-audio",
 	.pcm_ops	= &psc_dma_pcm_ops,
 	.pcm_new	= &psc_dma_pcm_new,
 	.pcm_free	= &psc_dma_pcm_free,
 };
-
+EXPORT_SYMBOL_GPL(mpc5200_dma_platform);
diff --git a/sound/soc/fsl/mpc5200_dma.h b/sound/soc/fsl/mpc5200_dma.h
index a33232c..e52b90e 100644
--- a/sound/soc/fsl/mpc5200_dma.h
+++ b/sound/soc/fsl/mpc5200_dma.h
@@ -64,18 +64,18 @@ struct psc_dma {
 };
 
 
-int psc_dma_startup(struct snd_pcm_substream *substream,
+int mpc5200_dma_startup(struct snd_pcm_substream *substream,
 			   struct snd_soc_dai *dai);
 
-int psc_dma_hw_free(struct snd_pcm_substream *substream,
+int mpc5200_dma_hw_free(struct snd_pcm_substream *substream,
 			   struct snd_soc_dai *dai);
 
-void psc_dma_shutdown(struct snd_pcm_substream *substream,
+void mpc5200_dma_shutdown(struct snd_pcm_substream *substream,
 			     struct snd_soc_dai *dai);
 
-int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
+int mpc5200_dma_trigger(struct snd_pcm_substream *substream, int cmd,
 			   struct snd_soc_dai *dai);
 
-extern struct snd_soc_platform psc_dma_pcm_soc_platform;
+extern struct snd_soc_platform mpc5200_dma_platform;
 
 #endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */
diff --git a/sound/soc/fsl/mpc5200_psc_i2s.c b/sound/soc/fsl/mpc5200_psc_i2s.c
index 12a7917..a4a439c 100644
--- a/sound/soc/fsl/mpc5200_psc_i2s.c
+++ b/sound/soc/fsl/mpc5200_psc_i2s.c
@@ -140,11 +140,11 @@ static int psc_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int format)
  * psc_i2s_dai_template: template CPU Digital Audio Interface
  */
 static struct snd_soc_dai_ops psc_i2s_dai_ops = {
-	.startup	= psc_dma_startup,
+	.startup	= mpc5200_dma_startup,
 	.hw_params	= psc_i2s_hw_params,
-	.hw_free	= psc_dma_hw_free,
-	.shutdown	= psc_dma_shutdown,
-	.trigger	= psc_dma_trigger,
+	.hw_free	= mpc5200_dma_hw_free,
+	.shutdown	= mpc5200_dma_shutdown,
+	.trigger	= mpc5200_dma_trigger,
 	.set_sysclk	= psc_i2s_set_sysclk,
 	.set_fmt	= psc_i2s_set_fmt,
 };
@@ -350,10 +350,10 @@ static int __devinit psc_i2s_of_probe(struct of_device *op,
 	if (rc)
 		dev_info(psc_dma->dev, "error creating sysfs files\n");
 
-	snd_soc_register_platform(&psc_dma_pcm_soc_platform);
+	snd_soc_register_platform(&mpc5200_dma_platform);
 
 	/* Tell the ASoC OF helpers about it */
-	of_snd_soc_register_platform(&psc_dma_pcm_soc_platform, op->node,
+	of_snd_soc_register_platform(&mpc5200_dma_platform, op->node,
 				     &psc_dma->dai);
 
 	return 0;
@@ -365,7 +365,7 @@ static int __devexit psc_i2s_of_remove(struct of_device *op)
 
 	dev_dbg(&op->dev, "psc_i2s_remove()\n");
 
-	snd_soc_unregister_platform(&psc_dma_pcm_soc_platform);
+	snd_soc_unregister_platform(&mpc5200_dma_platform);
 
 	bcom_gen_bd_rx_release(psc_dma->capture.bcom_task);
 	bcom_gen_bd_tx_release(psc_dma->playback.bcom_task);

Re: [PATCH V1 1/3] Basic split of mpc5200 DMA code out from mpc5200_psc_i2s

[Grant Likely]

On Sun, Apr 26, 2009 at 1:53 PM, Jon Smirl <jonsmirl@gmail.com> wrote:
> Basic split of mpc5200 DMA code out from i2s into a standalone file.
>
> Signed-off-by: Jon Smirl <jonsmirl@gmail.com>

Acked-by: Grant Likely <grant.likely@secretlab.ca>

But you should really also send this to the ALSA list.  I cannot merge
this patch.

g.

> ---
> =A0sound/soc/fsl/Kconfig =A0 =A0 =A0 =A0 =A0 | =A0 =A04
> =A0sound/soc/fsl/Makefile =A0 =A0 =A0 =A0 =A0| =A0 =A02
> =A0sound/soc/fsl/mpc5200_dma.c =A0 =A0 | =A0457 +++++++++++++++++++++++++=
++++++++++++
> =A0sound/soc/fsl/mpc5200_dma.h =A0 =A0 | =A0 81 +++++++
> =A0sound/soc/fsl/mpc5200_psc_i2s.c | =A0484 -----------------------------=
----------
> =A05 files changed, 546 insertions(+), 482 deletions(-)
> =A0create mode 100644 sound/soc/fsl/mpc5200_dma.c
> =A0create mode 100644 sound/soc/fsl/mpc5200_dma.h
>
> diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
> index 9fc9082..dc79bdf 100644
> --- a/sound/soc/fsl/Kconfig
> +++ b/sound/soc/fsl/Kconfig
> @@ -1,5 +1,8 @@
> =A0config SND_SOC_OF_SIMPLE
> =A0 =A0 =A0 =A0tristate
> +
> +config SND_MPC52xx_DMA
> + =A0 =A0 =A0 tristate
>
> =A0# ASoC platform support for the Freescale MPC8610 SOC. =A0This compile=
s drivers
> =A0# for the SSI and the Elo DMA controller. =A0You will still need to se=
lect
> @@ -23,6 +26,7 @@ config SND_SOC_MPC5200_I2S
> =A0 =A0 =A0 =A0tristate "Freescale MPC5200 PSC in I2S mode driver"
> =A0 =A0 =A0 =A0depends on PPC_MPC52xx && PPC_BESTCOMM
> =A0 =A0 =A0 =A0select SND_SOC_OF_SIMPLE
> + =A0 =A0 =A0 select SND_MPC52xx_DMA
> =A0 =A0 =A0 =A0select PPC_BESTCOMM_GEN_BD
> =A0 =A0 =A0 =A0help
> =A0 =A0 =A0 =A0 =A0Say Y here to support the MPC5200 PSCs in I2S mode.
> diff --git a/sound/soc/fsl/Makefile b/sound/soc/fsl/Makefile
> index f85134c..7731ef2 100644
> --- a/sound/soc/fsl/Makefile
> +++ b/sound/soc/fsl/Makefile
> @@ -10,5 +10,7 @@ snd-soc-fsl-ssi-objs :=3D fsl_ssi.o
> =A0snd-soc-fsl-dma-objs :=3D fsl_dma.o
> =A0obj-$(CONFIG_SND_SOC_MPC8610) +=3D snd-soc-fsl-ssi.o snd-soc-fsl-dma.o
>
> +# MPC5200 Platform Support
> +obj-$(CONFIG_SND_MPC52xx_DMA) +=3D mpc5200_dma.o
> =A0obj-$(CONFIG_SND_SOC_MPC5200_I2S) +=3D mpc5200_psc_i2s.o
>
> diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c
> new file mode 100644
> index 0000000..cccaff4
> --- /dev/null
> +++ b/sound/soc/fsl/mpc5200_dma.c
> @@ -0,0 +1,457 @@
> +/*
> + * Freescale MPC5200 PSC DMA
> + * ALSA SoC Platform driver
> + *
> + * Copyright (C) 2008 Secret Lab Technologies Ltd.
> + */
> +
> +#include <linux/init.h>
> +#include <linux/module.h>
> +#include <linux/interrupt.h>
> +#include <linux/device.h>
> +#include <linux/delay.h>
> +#include <linux/of_device.h>
> +#include <linux/of_platform.h>
> +#include <linux/dma-mapping.h>
> +
> +#include <sound/core.h>
> +#include <sound/pcm.h>
> +#include <sound/pcm_params.h>
> +#include <sound/initval.h>
> +#include <sound/soc.h>
> +#include <sound/soc-of-simple.h>
> +
> +#include <sysdev/bestcomm/bestcomm.h>
> +#include <sysdev/bestcomm/gen_bd.h>
> +#include <asm/mpc52xx_psc.h>
> +
> +#include "mpc5200_dma.h"
> +
> +MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
> +MODULE_DESCRIPTION("Freescale MPC5200 PSC in DMA mode ASoC Driver");
> +MODULE_LICENSE("GPL");
> +
> +/*
> + * Interrupt handlers
> + */
> +static irqreturn_t psc_i2s_status_irq(int irq, void *_psc_i2s)
> +{
> + =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D _psc_i2s;
> + =A0 =A0 =A0 struct mpc52xx_psc __iomem *regs =3D psc_i2s->psc_regs;
> + =A0 =A0 =A0 u16 isr;
> +
> + =A0 =A0 =A0 isr =3D in_be16(&regs->mpc52xx_psc_isr);
> +
> + =A0 =A0 =A0 /* Playback underrun error */
> + =A0 =A0 =A0 if (psc_i2s->playback.active && (isr & MPC52xx_PSC_IMR_TXEM=
P))
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s->stats.underrun_count++;
> +
> + =A0 =A0 =A0 /* Capture overrun error */
> + =A0 =A0 =A0 if (psc_i2s->capture.active && (isr & MPC52xx_PSC_IMR_ORERR=
))
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s->stats.overrun_count++;
> +
> + =A0 =A0 =A0 out_8(&regs->command, 4 << 4); =A0/* reset the error status=
 */
> +
> + =A0 =A0 =A0 return IRQ_HANDLED;
> +}
> +
> +/**
> + * psc_i2s_bcom_enqueue_next_buffer - Enqueue another audio buffer
> + * @s: pointer to stream private data structure
> + *
> + * Enqueues another audio period buffer into the bestcomm queue.
> + *
> + * Note: The routine must only be called when there is space available i=
n
> + * the queue. =A0Otherwise the enqueue will fail and the audio ring buff=
er
> + * will get out of sync
> + */
> +static void psc_i2s_bcom_enqueue_next_buffer(struct psc_i2s_stream *s)
> +{
> + =A0 =A0 =A0 struct bcom_bd *bd;
> +
> + =A0 =A0 =A0 /* Prepare and enqueue the next buffer descriptor */
> + =A0 =A0 =A0 bd =3D bcom_prepare_next_buffer(s->bcom_task);
> + =A0 =A0 =A0 bd->status =3D s->period_bytes;
> + =A0 =A0 =A0 bd->data[0] =3D s->period_next_pt;
> + =A0 =A0 =A0 bcom_submit_next_buffer(s->bcom_task, NULL);
> +
> + =A0 =A0 =A0 /* Update for next period */
> + =A0 =A0 =A0 s->period_next_pt +=3D s->period_bytes;
> + =A0 =A0 =A0 if (s->period_next_pt >=3D s->period_end)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_next_pt =3D s->period_start;
> +}
> +
> +/* Bestcomm DMA irq handler */
> +static irqreturn_t psc_i2s_bcom_irq(int irq, void *_psc_i2s_stream)
> +{
> + =A0 =A0 =A0 struct psc_i2s_stream *s =3D _psc_i2s_stream;
> +
> + =A0 =A0 =A0 /* For each finished period, dequeue the completed period b=
uffer
> + =A0 =A0 =A0 =A0* and enqueue a new one in it's place. */
> + =A0 =A0 =A0 while (bcom_buffer_done(s->bcom_task)) {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_retrieve_buffer(s->bcom_task, NULL, NU=
LL);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_current_pt +=3D s->period_bytes;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (s->period_current_pt >=3D s->period_end=
)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_current_pt =3D s-=
>period_start;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s_bcom_enqueue_next_buffer(s);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_enable(s->bcom_task);
> + =A0 =A0 =A0 }
> +
> + =A0 =A0 =A0 /* If the stream is active, then also inform the PCM middle=
 layer
> + =A0 =A0 =A0 =A0* of the period finished event. */
> + =A0 =A0 =A0 if (s->active)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 snd_pcm_period_elapsed(s->stream);
> +
> + =A0 =A0 =A0 return IRQ_HANDLED;
> +}
> +
> +/**
> + * psc_i2s_startup: create a new substream
> + *
> + * This is the first function called when a stream is opened.
> + *
> + * If this is the first stream open, then grab the IRQ and program most =
of
> + * the PSC registers.
> + */
> +int psc_i2s_startup(struct snd_pcm_substream *substream,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct snd_soc_dai *=
dai)
> +{
> + =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D substream->private_data=
;
> + =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> + =A0 =A0 =A0 int rc;
> +
> + =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_startup(substream=3D%p)\n", =
substream);
> +
> + =A0 =A0 =A0 if (!psc_i2s->playback.active &&
> + =A0 =A0 =A0 =A0 =A0 !psc_i2s->capture.active) {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Setup the IRQs */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc =3D request_irq(psc_i2s->irq, &psc_i2s_s=
tatus_irq, IRQF_SHARED,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0"psc-i2s=
-status", psc_i2s);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc |=3D request_irq(psc_i2s->capture.irq,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 &psc_i2=
s_bcom_irq, IRQF_SHARED,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 "psc-i2=
s-capture", &psc_i2s->capture);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc |=3D request_irq(psc_i2s->playback.irq,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 &psc_i2=
s_bcom_irq, IRQF_SHARED,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 "psc-i2=
s-playback", &psc_i2s->playback);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (rc) {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->irq, psc_=
i2s);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->capture.i=
rq,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0&psc_i2s=
->capture);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->playback.=
irq,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0&psc_i2s=
->playback);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 return -ENODEV;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> + =A0 =A0 =A0 }
> +
> + =A0 =A0 =A0 return 0;
> +}
> +
> +int psc_i2s_hw_free(struct snd_pcm_substream *substream,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct snd_soc_dai *=
dai)
> +{
> + =A0 =A0 =A0 snd_pcm_set_runtime_buffer(substream, NULL);
> + =A0 =A0 =A0 return 0;
> +}
> +
> +/**
> + * psc_i2s_trigger: start and stop the DMA transfer.
> + *
> + * This function is called by ALSA to start, stop, pause, and resume the=
 DMA
> + * transfer of data.
> + */
> +int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct snd_soc_dai *=
dai)
> +{
> + =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D substream->private_data=
;
> + =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> + =A0 =A0 =A0 struct snd_pcm_runtime *runtime =3D substream->runtime;
> + =A0 =A0 =A0 struct psc_i2s_stream *s;
> + =A0 =A0 =A0 struct mpc52xx_psc __iomem *regs =3D psc_i2s->psc_regs;
> + =A0 =A0 =A0 u16 imr;
> + =A0 =A0 =A0 u8 psc_cmd;
> + =A0 =A0 =A0 unsigned long flags;
> +
> + =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTURE=
)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
> + =A0 =A0 =A0 else
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
> +
> + =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_trigger(substream=3D%p, cmd=
=3D%i)"
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 " stream_id=3D%i\n",
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 substream, cmd, substream->pstr->stream);
> +
> + =A0 =A0 =A0 switch (cmd) {
> + =A0 =A0 =A0 case SNDRV_PCM_TRIGGER_START:
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_bytes =3D frames_to_bytes(runtime=
,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 =A0 =A0 =A0 =A0 =A0 runtime->period_size);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_start =3D virt_to_phys(runtime->d=
ma_area);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_end =3D s->period_start +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 (s->period_=
bytes * runtime->periods);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_next_pt =3D s->period_start;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_current_pt =3D s->period_start;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->active =3D 1;
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* First; reset everything */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PC=
M_STREAM_CAPTURE) {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs->command, MPC52=
xx_PSC_RST_RX);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs->command, MPC52=
xx_PSC_RST_ERR_STAT);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 } else {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs->command, MPC52=
xx_PSC_RST_TX);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs->command, MPC52=
xx_PSC_RST_ERR_STAT);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Next, fill up the bestcomm bd queue and =
enable DMA.
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0* This will begin filling the PSC's fifo=
. */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PC=
M_STREAM_CAPTURE)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_gen_bd_rx_reset(s->bco=
m_task);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 else
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_gen_bd_tx_reset(s->bco=
m_task);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 while (!bcom_queue_full(s->bcom_task))
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s_bcom_enqueue_next_b=
uffer(s);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_enable(s->bcom_task);
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Due to errata in the i2s mode; need to l=
ine up enabling
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0* the transmitter with a transition on t=
he frame sync
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0* line */
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 spin_lock_irqsave(&psc_i2s->lock, flags);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* first make sure it is low */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 while ((in_8(&regs->ipcr_acr.ipcr) & 0x80) =
!=3D 0)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 ;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* then wait for the transition to high */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 while ((in_8(&regs->ipcr_acr.ipcr) & 0x80) =
=3D=3D 0)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 ;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Finally, enable the PSC.
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0* Receiver must always be enabled; even =
when we only want
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0* transmit. =A0(see 15.3.2.3 of MPC5200B=
 User's Guide) */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_cmd =3D MPC52xx_PSC_RX_ENABLE;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PC=
M_STREAM_PLAYBACK)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_cmd |=3D MPC52xx_PSC_TX=
_ENABLE;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs->command, psc_cmd);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 spin_unlock_irqrestore(&psc_i2s->lock, flag=
s);
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 break;
> +
> + =A0 =A0 =A0 case SNDRV_PCM_TRIGGER_STOP:
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Turn off the PSC */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->active =3D 0;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PC=
M_STREAM_CAPTURE) {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!psc_i2s->playback.acti=
ve) {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs=
->command, 2 << 4); =A0/* reset rx */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs=
->command, 3 << 4); =A0/* reset tx */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs=
->command, 4 << 4); =A0/* reset err */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 } else {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs->command, 3 << =
4); =A0/* reset tx */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs->command, 4 << =
4); =A0/* reset err */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!psc_i2s->capture.activ=
e)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs=
->command, 2 << 4); =A0/* reset rx */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_disable(s->bcom_task);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 while (!bcom_queue_empty(s->bcom_task))
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_retrieve_buffer(s->bco=
m_task, NULL, NULL);
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 break;
> +
> + =A0 =A0 =A0 default:
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "invalid command\n");
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 return -EINVAL;
> + =A0 =A0 =A0 }
> +
> + =A0 =A0 =A0 /* Update interrupt enable settings */
> + =A0 =A0 =A0 imr =3D 0;
> + =A0 =A0 =A0 if (psc_i2s->playback.active)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 imr |=3D MPC52xx_PSC_IMR_TXEMP;
> + =A0 =A0 =A0 if (psc_i2s->capture.active)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 imr |=3D MPC52xx_PSC_IMR_ORERR;
> + =A0 =A0 =A0 out_be16(&regs->isr_imr.imr, imr);
> +
> + =A0 =A0 =A0 return 0;
> +}
> +
> +/**
> + * psc_i2s_shutdown: shutdown the data transfer on a stream
> + *
> + * Shutdown the PSC if there are no other substreams open.
> + */
> +void psc_i2s_shutdown(struct snd_pcm_substream *substream,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct snd_soc_d=
ai *dai)
> +{
> + =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D substream->private_data=
;
> + =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> +
> + =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_shutdown(substream=3D%p)\n",=
 substream);
> +
> + =A0 =A0 =A0 /*
> + =A0 =A0 =A0 =A0* If this is the last active substream, disable the PSC =
and release
> + =A0 =A0 =A0 =A0* the IRQ.
> + =A0 =A0 =A0 =A0*/
> + =A0 =A0 =A0 if (!psc_i2s->playback.active &&
> + =A0 =A0 =A0 =A0 =A0 !psc_i2s->capture.active) {
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Disable all interrupts and reset the PSC=
 */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_be16(&psc_i2s->psc_regs->isr_imr.imr, 0=
);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 3 << 4);=
 /* reset tx */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 2 << 4);=
 /* reset rx */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 1 << 4);=
 /* reset mode */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 4 << 4);=
 /* reset error */
> +
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Release irqs */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->irq, psc_i2s);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->capture.irq, &psc_i2s->ca=
pture);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->playback.irq, &psc_i2s->p=
layback);
> + =A0 =A0 =A0 }
> +}
> +
> +/* ---------------------------------------------------------------------
> + * The PSC DMA 'ASoC platform' driver
> + *
> + * Can be referenced by an 'ASoC machine' driver
> + * This driver only deals with the audio bus; it doesn't have any
> + * interaction with the attached codec
> + */
> +
> +static const struct snd_pcm_hardware psc_i2s_pcm_hardware =3D {
> + =A0 =A0 =A0 .info =3D SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO=
_BLOCK_TRANSFER,
> + =A0 =A0 =A0 .formats =3D SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE =
|
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_=
FMTBIT_S32_BE,
> + =A0 =A0 =A0 .rate_min =3D 8000,
> + =A0 =A0 =A0 .rate_max =3D 48000,
> + =A0 =A0 =A0 .channels_min =3D 2,
> + =A0 =A0 =A0 .channels_max =3D 2,
> + =A0 =A0 =A0 .period_bytes_max =A0 =A0 =A0 =3D 1024 * 1024,
> + =A0 =A0 =A0 .period_bytes_min =A0 =A0 =A0 =3D 32,
> + =A0 =A0 =A0 .periods_min =A0 =A0 =A0 =A0 =A0 =A0=3D 2,
> + =A0 =A0 =A0 .periods_max =A0 =A0 =A0 =A0 =A0 =A0=3D 256,
> + =A0 =A0 =A0 .buffer_bytes_max =A0 =A0 =A0 =3D 2 * 1024 * 1024,
> + =A0 =A0 =A0 .fifo_size =A0 =A0 =A0 =A0 =A0 =A0 =A0=3D 0,
> +};
> +
> +static int psc_i2s_pcm_open(struct snd_pcm_substream *substream)
> +{
> + =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D substream->private_data=
;
> + =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> + =A0 =A0 =A0 struct psc_i2s_stream *s;
> +
> + =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_pcm_open(substream=3D%p)\n",=
 substream);
> +
> + =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTURE=
)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
> + =A0 =A0 =A0 else
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
> +
> + =A0 =A0 =A0 snd_soc_set_runtime_hwparams(substream, &psc_i2s_pcm_hardwa=
re);
> +
> + =A0 =A0 =A0 s->stream =3D substream;
> + =A0 =A0 =A0 return 0;
> +}
> +
> +static int psc_i2s_pcm_close(struct snd_pcm_substream *substream)
> +{
> + =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D substream->private_data=
;
> + =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> + =A0 =A0 =A0 struct psc_i2s_stream *s;
> +
> + =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_pcm_close(substream=3D%p)\n"=
, substream);
> +
> + =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTURE=
)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
> + =A0 =A0 =A0 else
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
> +
> + =A0 =A0 =A0 s->stream =3D NULL;
> + =A0 =A0 =A0 return 0;
> +}
> +
> +static snd_pcm_uframes_t
> +psc_i2s_pcm_pointer(struct snd_pcm_substream *substream)
> +{
> + =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D substream->private_data=
;
> + =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> + =A0 =A0 =A0 struct psc_i2s_stream *s;
> + =A0 =A0 =A0 dma_addr_t count;
> +
> + =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTURE=
)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
> + =A0 =A0 =A0 else
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
> +
> + =A0 =A0 =A0 count =3D s->period_current_pt - s->period_start;
> +
> + =A0 =A0 =A0 return bytes_to_frames(substream->runtime, count);
> +}
> +
> +static struct snd_pcm_ops psc_i2s_pcm_ops =3D {
> + =A0 =A0 =A0 .open =A0 =A0 =A0 =A0 =A0 =3D psc_i2s_pcm_open,
> + =A0 =A0 =A0 .close =A0 =A0 =A0 =A0 =A0=3D psc_i2s_pcm_close,
> + =A0 =A0 =A0 .ioctl =A0 =A0 =A0 =A0 =A0=3D snd_pcm_lib_ioctl,
> + =A0 =A0 =A0 .pointer =A0 =A0 =A0 =A0=3D psc_i2s_pcm_pointer,
> +};
> +
> +static u64 psc_i2s_pcm_dmamask =3D 0xffffffff;
> +static int psc_i2s_pcm_new(struct snd_card *card, struct snd_soc_dai *da=
i,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct snd_pcm *pcm)
> +{
> + =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D pcm->private_data;
> + =A0 =A0 =A0 size_t size =3D psc_i2s_pcm_hardware.buffer_bytes_max;
> + =A0 =A0 =A0 int rc =3D 0;
> +
> + =A0 =A0 =A0 dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_new(card=3D%p, dai=
=3D%p, pcm=3D%p)\n",
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 card, dai, pcm);
> +
> + =A0 =A0 =A0 if (!card->dev->dma_mask)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 card->dev->dma_mask =3D &psc_i2s_pcm_dmamas=
k;
> + =A0 =A0 =A0 if (!card->dev->coherent_dma_mask)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 card->dev->coherent_dma_mask =3D 0xffffffff=
;
> +
> + =A0 =A0 =A0 if (pcm->streams[0].substream) {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc =3D snd_dma_alloc_pages(SNDRV_DMA_TYPE_D=
EV, pcm->dev, size,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 &pcm->streams[0].substream->dma_buffer);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (rc)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 goto playback_alloc_err;
> + =A0 =A0 =A0 }
> +
> + =A0 =A0 =A0 if (pcm->streams[1].substream) {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc =3D snd_dma_alloc_pages(SNDRV_DMA_TYPE_D=
EV, pcm->dev, size,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 &pcm->streams[1].substream->dma_buffer);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (rc)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 goto capture_alloc_err;
> + =A0 =A0 =A0 }
> +
> + =A0 =A0 =A0 return 0;
> +
> + capture_alloc_err:
> + =A0 =A0 =A0 if (pcm->streams[0].substream)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 snd_dma_free_pages(&pcm->streams[0].substre=
am->dma_buffer);
> + playback_alloc_err:
> + =A0 =A0 =A0 dev_err(card->dev, "Cannot allocate buffer(s)\n");
> + =A0 =A0 =A0 return -ENOMEM;
> +}
> +
> +static void psc_i2s_pcm_free(struct snd_pcm *pcm)
> +{
> + =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D pcm->private_data;
> + =A0 =A0 =A0 struct snd_pcm_substream *substream;
> + =A0 =A0 =A0 int stream;
> +
> + =A0 =A0 =A0 dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_free(pcm=3D%p)\n", p=
cm);
> +
> + =A0 =A0 =A0 for (stream =3D 0; stream < 2; stream++) {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 substream =3D pcm->streams[stream].substrea=
m;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (substream) {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 snd_dma_free_pages(&substre=
am->dma_buffer);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 substream->dma_buffer.area =
=3D NULL;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 substream->dma_buffer.addr =
=3D 0;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> + =A0 =A0 =A0 }
> +}
> +
> +struct snd_soc_platform psc_i2s_pcm_soc_platform =3D {
> + =A0 =A0 =A0 .name =A0 =A0 =A0 =A0 =A0 =3D "mpc5200-psc-audio",
> + =A0 =A0 =A0 .pcm_ops =A0 =A0 =A0 =A0=3D &psc_i2s_pcm_ops,
> + =A0 =A0 =A0 .pcm_new =A0 =A0 =A0 =A0=3D &psc_i2s_pcm_new,
> + =A0 =A0 =A0 .pcm_free =A0 =A0 =A0 =3D &psc_i2s_pcm_free,
> +};
> +
> diff --git a/sound/soc/fsl/mpc5200_dma.h b/sound/soc/fsl/mpc5200_dma.h
> new file mode 100644
> index 0000000..9a19e8a
> --- /dev/null
> +++ b/sound/soc/fsl/mpc5200_dma.h
> @@ -0,0 +1,81 @@
> +/*
> + * Freescale MPC5200 Audio DMA driver
> + */
> +
> +#ifndef __SOUND_SOC_FSL_MPC5200_DMA_H__
> +#define __SOUND_SOC_FSL_MPC5200_DMA_H__
> +
> +/**
> + * psc_i2s_stream - Data specific to a single stream (playback or captur=
e)
> + * @active: =A0 =A0 =A0 =A0 =A0 =A0flag indicating if the stream is acti=
ve
> + * @psc_i2s: =A0 =A0 =A0 =A0 =A0 pointer back to parent psc_i2s data str=
ucture
> + * @bcom_task: =A0 =A0 =A0 =A0 bestcomm task structure
> + * @irq: =A0 =A0 =A0 =A0 =A0 =A0 =A0 irq number for bestcomm task
> + * @period_start: =A0 =A0 =A0physical address of start of DMA region
> + * @period_end: =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0physical address of end o=
f DMA region
> + * @period_next_pt: =A0 =A0physical address of next DMA buffer to enqueu=
e
> + * @period_bytes: =A0 =A0 =A0size of DMA period in bytes
> + */
> +struct psc_i2s_stream {
> + =A0 =A0 =A0 int active;
> + =A0 =A0 =A0 struct psc_i2s *psc_i2s;
> + =A0 =A0 =A0 struct bcom_task *bcom_task;
> + =A0 =A0 =A0 int irq;
> + =A0 =A0 =A0 struct snd_pcm_substream *stream;
> + =A0 =A0 =A0 dma_addr_t period_start;
> + =A0 =A0 =A0 dma_addr_t period_end;
> + =A0 =A0 =A0 dma_addr_t period_next_pt;
> + =A0 =A0 =A0 dma_addr_t period_current_pt;
> + =A0 =A0 =A0 int period_bytes;
> +};
> +
> +/**
> + * psc_i2s - Private driver data
> + * @name: short name for this device ("PSC0", "PSC1", etc)
> + * @psc_regs: pointer to the PSC's registers
> + * @fifo_regs: pointer to the PSC's FIFO registers
> + * @irq: IRQ of this PSC
> + * @dev: struct device pointer
> + * @dai: the CPU DAI for this device
> + * @sicr: Base value used in serial interface control register; mode is =
ORed
> + * =A0 =A0 =A0 =A0with this value.
> + * @playback: Playback stream context data
> + * @capture: Capture stream context data
> + */
> +struct psc_i2s {
> + =A0 =A0 =A0 char name[32];
> + =A0 =A0 =A0 struct mpc52xx_psc __iomem *psc_regs;
> + =A0 =A0 =A0 struct mpc52xx_psc_fifo __iomem *fifo_regs;
> + =A0 =A0 =A0 unsigned int irq;
> + =A0 =A0 =A0 struct device *dev;
> + =A0 =A0 =A0 struct snd_soc_dai dai;
> + =A0 =A0 =A0 spinlock_t lock;
> + =A0 =A0 =A0 u32 sicr;
> +
> + =A0 =A0 =A0 /* per-stream data */
> + =A0 =A0 =A0 struct psc_i2s_stream playback;
> + =A0 =A0 =A0 struct psc_i2s_stream capture;
> +
> + =A0 =A0 =A0 /* Statistics */
> + =A0 =A0 =A0 struct {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 int overrun_count;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 int underrun_count;
> + =A0 =A0 =A0 } stats;
> +};
> +
> +
> +int psc_i2s_startup(struct snd_pcm_substream *substream,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct snd_soc_dai *=
dai);
> +
> +int psc_i2s_hw_free(struct snd_pcm_substream *substream,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct snd_soc_dai *=
dai);
> +
> +void psc_i2s_shutdown(struct snd_pcm_substream *substream,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct snd_soc_d=
ai *dai);
> +
> +int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct snd_soc_dai *=
dai);
> +
> +extern struct snd_soc_platform psc_i2s_pcm_soc_platform;
> +
> +#endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */
> diff --git a/sound/soc/fsl/mpc5200_psc_i2s.c b/sound/soc/fsl/mpc5200_psc_=
i2s.c
> index 3aa729d..8974b53 100644
> --- a/sound/soc/fsl/mpc5200_psc_i2s.c
> +++ b/sound/soc/fsl/mpc5200_psc_i2s.c
> @@ -25,6 +25,8 @@
> =A0#include <sysdev/bestcomm/gen_bd.h>
> =A0#include <asm/mpc52xx_psc.h>
>
> +#include "mpc5200_dma.h"
> +
> =A0MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
> =A0MODULE_DESCRIPTION("Freescale MPC5200 PSC in I2S mode ASoC Driver");
> =A0MODULE_LICENSE("GPL");
> @@ -47,179 +49,6 @@ MODULE_LICENSE("GPL");
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 SNDRV_PCM_FMTBIT_S24_BE |=
 SNDRV_PCM_FMTBIT_S24_BE | \
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 SNDRV_PCM_FMTBIT_S32_BE)
>
> -/**
> - * psc_i2s_stream - Data specific to a single stream (playback or captur=
e)
> - * @active: =A0 =A0 =A0 =A0 =A0 =A0flag indicating if the stream is acti=
ve
> - * @psc_i2s: =A0 =A0 =A0 =A0 =A0 pointer back to parent psc_i2s data str=
ucture
> - * @bcom_task: =A0 =A0 =A0 =A0 bestcomm task structure
> - * @irq: =A0 =A0 =A0 =A0 =A0 =A0 =A0 irq number for bestcomm task
> - * @period_start: =A0 =A0 =A0physical address of start of DMA region
> - * @period_end: =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0physical address of end o=
f DMA region
> - * @period_next_pt: =A0 =A0physical address of next DMA buffer to enqueu=
e
> - * @period_bytes: =A0 =A0 =A0size of DMA period in bytes
> - */
> -struct psc_i2s_stream {
> - =A0 =A0 =A0 int active;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s;
> - =A0 =A0 =A0 struct bcom_task *bcom_task;
> - =A0 =A0 =A0 int irq;
> - =A0 =A0 =A0 struct snd_pcm_substream *stream;
> - =A0 =A0 =A0 dma_addr_t period_start;
> - =A0 =A0 =A0 dma_addr_t period_end;
> - =A0 =A0 =A0 dma_addr_t period_next_pt;
> - =A0 =A0 =A0 dma_addr_t period_current_pt;
> - =A0 =A0 =A0 int period_bytes;
> -};
> -
> -/**
> - * psc_i2s - Private driver data
> - * @name: short name for this device ("PSC0", "PSC1", etc)
> - * @psc_regs: pointer to the PSC's registers
> - * @fifo_regs: pointer to the PSC's FIFO registers
> - * @irq: IRQ of this PSC
> - * @dev: struct device pointer
> - * @dai: the CPU DAI for this device
> - * @sicr: Base value used in serial interface control register; mode is =
ORed
> - * =A0 =A0 =A0 =A0with this value.
> - * @playback: Playback stream context data
> - * @capture: Capture stream context data
> - */
> -struct psc_i2s {
> - =A0 =A0 =A0 char name[32];
> - =A0 =A0 =A0 struct mpc52xx_psc __iomem *psc_regs;
> - =A0 =A0 =A0 struct mpc52xx_psc_fifo __iomem *fifo_regs;
> - =A0 =A0 =A0 unsigned int irq;
> - =A0 =A0 =A0 struct device *dev;
> - =A0 =A0 =A0 struct snd_soc_dai dai;
> - =A0 =A0 =A0 spinlock_t lock;
> - =A0 =A0 =A0 u32 sicr;
> -
> - =A0 =A0 =A0 /* per-stream data */
> - =A0 =A0 =A0 struct psc_i2s_stream playback;
> - =A0 =A0 =A0 struct psc_i2s_stream capture;
> -
> - =A0 =A0 =A0 /* Statistics */
> - =A0 =A0 =A0 struct {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 int overrun_count;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 int underrun_count;
> - =A0 =A0 =A0 } stats;
> -};
> -
> -/*
> - * Interrupt handlers
> - */
> -static irqreturn_t psc_i2s_status_irq(int irq, void *_psc_i2s)
> -{
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D _psc_i2s;
> - =A0 =A0 =A0 struct mpc52xx_psc __iomem *regs =3D psc_i2s->psc_regs;
> - =A0 =A0 =A0 u16 isr;
> -
> - =A0 =A0 =A0 isr =3D in_be16(&regs->mpc52xx_psc_isr);
> -
> - =A0 =A0 =A0 /* Playback underrun error */
> - =A0 =A0 =A0 if (psc_i2s->playback.active && (isr & MPC52xx_PSC_IMR_TXEM=
P))
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s->stats.underrun_count++;
> -
> - =A0 =A0 =A0 /* Capture overrun error */
> - =A0 =A0 =A0 if (psc_i2s->capture.active && (isr & MPC52xx_PSC_IMR_ORERR=
))
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s->stats.overrun_count++;
> -
> - =A0 =A0 =A0 out_8(&regs->command, 4 << 4); =A0/* reset the error status=
 */
> -
> - =A0 =A0 =A0 return IRQ_HANDLED;
> -}
> -
> -/**
> - * psc_i2s_bcom_enqueue_next_buffer - Enqueue another audio buffer
> - * @s: pointer to stream private data structure
> - *
> - * Enqueues another audio period buffer into the bestcomm queue.
> - *
> - * Note: The routine must only be called when there is space available i=
n
> - * the queue. =A0Otherwise the enqueue will fail and the audio ring buff=
er
> - * will get out of sync
> - */
> -static void psc_i2s_bcom_enqueue_next_buffer(struct psc_i2s_stream *s)
> -{
> - =A0 =A0 =A0 struct bcom_bd *bd;
> -
> - =A0 =A0 =A0 /* Prepare and enqueue the next buffer descriptor */
> - =A0 =A0 =A0 bd =3D bcom_prepare_next_buffer(s->bcom_task);
> - =A0 =A0 =A0 bd->status =3D s->period_bytes;
> - =A0 =A0 =A0 bd->data[0] =3D s->period_next_pt;
> - =A0 =A0 =A0 bcom_submit_next_buffer(s->bcom_task, NULL);
> -
> - =A0 =A0 =A0 /* Update for next period */
> - =A0 =A0 =A0 s->period_next_pt +=3D s->period_bytes;
> - =A0 =A0 =A0 if (s->period_next_pt >=3D s->period_end)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_next_pt =3D s->period_start;
> -}
> -
> -/* Bestcomm DMA irq handler */
> -static irqreturn_t psc_i2s_bcom_irq(int irq, void *_psc_i2s_stream)
> -{
> - =A0 =A0 =A0 struct psc_i2s_stream *s =3D _psc_i2s_stream;
> -
> - =A0 =A0 =A0 /* For each finished period, dequeue the completed period b=
uffer
> - =A0 =A0 =A0 =A0* and enqueue a new one in it's place. */
> - =A0 =A0 =A0 while (bcom_buffer_done(s->bcom_task)) {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_retrieve_buffer(s->bcom_task, NULL, NU=
LL);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_current_pt +=3D s->period_bytes;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (s->period_current_pt >=3D s->period_end=
)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_current_pt =3D s-=
>period_start;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s_bcom_enqueue_next_buffer(s);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_enable(s->bcom_task);
> - =A0 =A0 =A0 }
> -
> - =A0 =A0 =A0 /* If the stream is active, then also inform the PCM middle=
 layer
> - =A0 =A0 =A0 =A0* of the period finished event. */
> - =A0 =A0 =A0 if (s->active)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 snd_pcm_period_elapsed(s->stream);
> -
> - =A0 =A0 =A0 return IRQ_HANDLED;
> -}
> -
> -/**
> - * psc_i2s_startup: create a new substream
> - *
> - * This is the first function called when a stream is opened.
> - *
> - * If this is the first stream open, then grab the IRQ and program most =
of
> - * the PSC registers.
> - */
> -static int psc_i2s_startup(struct snd_pcm_substream *substream,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct snd_soc_dai *=
dai)
> -{
> - =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D substream->private_data=
;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> - =A0 =A0 =A0 int rc;
> -
> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_startup(substream=3D%p)\n", =
substream);
> -
> - =A0 =A0 =A0 if (!psc_i2s->playback.active &&
> - =A0 =A0 =A0 =A0 =A0 !psc_i2s->capture.active) {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Setup the IRQs */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc =3D request_irq(psc_i2s->irq, &psc_i2s_s=
tatus_irq, IRQF_SHARED,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0"psc-i2s=
-status", psc_i2s);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc |=3D request_irq(psc_i2s->capture.irq,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 &psc_i2=
s_bcom_irq, IRQF_SHARED,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 "psc-i2=
s-capture", &psc_i2s->capture);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc |=3D request_irq(psc_i2s->playback.irq,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 &psc_i2=
s_bcom_irq, IRQF_SHARED,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 "psc-i2=
s-playback", &psc_i2s->playback);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (rc) {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->irq, psc_=
i2s);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->capture.i=
rq,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0&psc_i2s=
->capture);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->playback.=
irq,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0&psc_i2s=
->playback);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 return -ENODEV;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> - =A0 =A0 =A0 }
> -
> - =A0 =A0 =A0 return 0;
> -}
> -
> =A0static int psc_i2s_hw_params(struct snd_pcm_substream *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct sn=
d_pcm_hw_params *params,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct sn=
d_soc_dai *dai)
> @@ -258,164 +87,6 @@ static int psc_i2s_hw_params(struct snd_pcm_substrea=
m *substream,
> =A0 =A0 =A0 =A0return 0;
> =A0}
>
> -static int psc_i2s_hw_free(struct snd_pcm_substream *substream,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct snd_soc_dai *=
dai)
> -{
> - =A0 =A0 =A0 snd_pcm_set_runtime_buffer(substream, NULL);
> - =A0 =A0 =A0 return 0;
> -}
> -
> -/**
> - * psc_i2s_trigger: start and stop the DMA transfer.
> - *
> - * This function is called by ALSA to start, stop, pause, and resume the=
 DMA
> - * transfer of data.
> - */
> -static int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct snd_soc_dai *=
dai)
> -{
> - =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D substream->private_data=
;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> - =A0 =A0 =A0 struct snd_pcm_runtime *runtime =3D substream->runtime;
> - =A0 =A0 =A0 struct psc_i2s_stream *s;
> - =A0 =A0 =A0 struct mpc52xx_psc __iomem *regs =3D psc_i2s->psc_regs;
> - =A0 =A0 =A0 u16 imr;
> - =A0 =A0 =A0 u8 psc_cmd;
> - =A0 =A0 =A0 unsigned long flags;
> -
> - =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTURE=
)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
> - =A0 =A0 =A0 else
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
> -
> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_trigger(substream=3D%p, cmd=
=3D%i)"
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 " stream_id=3D%i\n",
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 substream, cmd, substream->pstr->stream);
> -
> - =A0 =A0 =A0 switch (cmd) {
> - =A0 =A0 =A0 case SNDRV_PCM_TRIGGER_START:
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_bytes =3D frames_to_bytes(runtime=
,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 =A0 =A0 =A0 =A0 =A0 runtime->period_size);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_start =3D virt_to_phys(runtime->d=
ma_area);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_end =3D s->period_start +
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 (s->period_=
bytes * runtime->periods);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_next_pt =3D s->period_start;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->period_current_pt =3D s->period_start;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->active =3D 1;
> -
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* First; reset everything */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PC=
M_STREAM_CAPTURE) {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs->command, MPC52=
xx_PSC_RST_RX);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs->command, MPC52=
xx_PSC_RST_ERR_STAT);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 } else {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs->command, MPC52=
xx_PSC_RST_TX);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs->command, MPC52=
xx_PSC_RST_ERR_STAT);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> -
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Next, fill up the bestcomm bd queue and =
enable DMA.
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0* This will begin filling the PSC's fifo=
. */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PC=
M_STREAM_CAPTURE)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_gen_bd_rx_reset(s->bco=
m_task);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 else
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_gen_bd_tx_reset(s->bco=
m_task);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 while (!bcom_queue_full(s->bcom_task))
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s_bcom_enqueue_next_b=
uffer(s);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_enable(s->bcom_task);
> -
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Due to errata in the i2s mode; need to l=
ine up enabling
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0* the transmitter with a transition on t=
he frame sync
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0* line */
> -
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 spin_lock_irqsave(&psc_i2s->lock, flags);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* first make sure it is low */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 while ((in_8(&regs->ipcr_acr.ipcr) & 0x80) =
!=3D 0)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 ;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* then wait for the transition to high */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 while ((in_8(&regs->ipcr_acr.ipcr) & 0x80) =
=3D=3D 0)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 ;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Finally, enable the PSC.
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0* Receiver must always be enabled; even =
when we only want
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0* transmit. =A0(see 15.3.2.3 of MPC5200B=
 User's Guide) */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_cmd =3D MPC52xx_PSC_RX_ENABLE;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PC=
M_STREAM_PLAYBACK)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_cmd |=3D MPC52xx_PSC_TX=
_ENABLE;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs->command, psc_cmd);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 spin_unlock_irqrestore(&psc_i2s->lock, flag=
s);
> -
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 break;
> -
> - =A0 =A0 =A0 case SNDRV_PCM_TRIGGER_STOP:
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Turn off the PSC */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s->active =3D 0;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PC=
M_STREAM_CAPTURE) {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!psc_i2s->playback.acti=
ve) {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs=
->command, 2 << 4); =A0/* reset rx */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs=
->command, 3 << 4); =A0/* reset tx */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs=
->command, 4 << 4); =A0/* reset err */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 } else {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs->command, 3 << =
4); =A0/* reset tx */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs->command, 4 << =
4); =A0/* reset err */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!psc_i2s->capture.activ=
e)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&regs=
->command, 2 << 4); =A0/* reset rx */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> -
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_disable(s->bcom_task);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 while (!bcom_queue_empty(s->bcom_task))
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_retrieve_buffer(s->bco=
m_task, NULL, NULL);
> -
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 break;
> -
> - =A0 =A0 =A0 default:
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "invalid command\n");
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 return -EINVAL;
> - =A0 =A0 =A0 }
> -
> - =A0 =A0 =A0 /* Update interrupt enable settings */
> - =A0 =A0 =A0 imr =3D 0;
> - =A0 =A0 =A0 if (psc_i2s->playback.active)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 imr |=3D MPC52xx_PSC_IMR_TXEMP;
> - =A0 =A0 =A0 if (psc_i2s->capture.active)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 imr |=3D MPC52xx_PSC_IMR_ORERR;
> - =A0 =A0 =A0 out_be16(&regs->isr_imr.imr, imr);
> -
> - =A0 =A0 =A0 return 0;
> -}
> -
> -/**
> - * psc_i2s_shutdown: shutdown the data transfer on a stream
> - *
> - * Shutdown the PSC if there are no other substreams open.
> - */
> -static void psc_i2s_shutdown(struct snd_pcm_substream *substream,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct snd_soc_d=
ai *dai)
> -{
> - =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D substream->private_data=
;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> -
> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_shutdown(substream=3D%p)\n",=
 substream);
> -
> - =A0 =A0 =A0 /*
> - =A0 =A0 =A0 =A0* If this is the last active substream, disable the PSC =
and release
> - =A0 =A0 =A0 =A0* the IRQ.
> - =A0 =A0 =A0 =A0*/
> - =A0 =A0 =A0 if (!psc_i2s->playback.active &&
> - =A0 =A0 =A0 =A0 =A0 !psc_i2s->capture.active) {
> -
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Disable all interrupts and reset the PSC=
 */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_be16(&psc_i2s->psc_regs->isr_imr.imr, 0=
);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 3 << 4);=
 /* reset tx */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 2 << 4);=
 /* reset rx */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 1 << 4);=
 /* reset mode */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 4 << 4);=
 /* reset error */
> -
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Release irqs */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->irq, psc_i2s);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->capture.irq, &psc_i2s->ca=
pture);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->playback.irq, &psc_i2s->p=
layback);
> - =A0 =A0 =A0 }
> -}
> -
> =A0/**
> =A0* psc_i2s_set_sysclk: set the clock frequency and direction
> =A0*
> @@ -495,157 +166,6 @@ static struct snd_soc_dai psc_i2s_dai_template =3D =
{
> =A0};
>
> =A0/* -------------------------------------------------------------------=
--
> - * The PSC I2S 'ASoC platform' driver
> - *
> - * Can be referenced by an 'ASoC machine' driver
> - * This driver only deals with the audio bus; it doesn't have any
> - * interaction with the attached codec
> - */
> -
> -static const struct snd_pcm_hardware psc_i2s_pcm_hardware =3D {
> - =A0 =A0 =A0 .info =3D SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID |
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INFO=
_BLOCK_TRANSFER,
> - =A0 =A0 =A0 .formats =3D SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE =
|
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_=
FMTBIT_S32_BE,
> - =A0 =A0 =A0 .rate_min =3D 8000,
> - =A0 =A0 =A0 .rate_max =3D 48000,
> - =A0 =A0 =A0 .channels_min =3D 2,
> - =A0 =A0 =A0 .channels_max =3D 2,
> - =A0 =A0 =A0 .period_bytes_max =A0 =A0 =A0 =3D 1024 * 1024,
> - =A0 =A0 =A0 .period_bytes_min =A0 =A0 =A0 =3D 32,
> - =A0 =A0 =A0 .periods_min =A0 =A0 =A0 =A0 =A0 =A0=3D 2,
> - =A0 =A0 =A0 .periods_max =A0 =A0 =A0 =A0 =A0 =A0=3D 256,
> - =A0 =A0 =A0 .buffer_bytes_max =A0 =A0 =A0 =3D 2 * 1024 * 1024,
> - =A0 =A0 =A0 .fifo_size =A0 =A0 =A0 =A0 =A0 =A0 =A0=3D 0,
> -};
> -
> -static int psc_i2s_pcm_open(struct snd_pcm_substream *substream)
> -{
> - =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D substream->private_data=
;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> - =A0 =A0 =A0 struct psc_i2s_stream *s;
> -
> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_pcm_open(substream=3D%p)\n",=
 substream);
> -
> - =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTURE=
)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
> - =A0 =A0 =A0 else
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
> -
> - =A0 =A0 =A0 snd_soc_set_runtime_hwparams(substream, &psc_i2s_pcm_hardwa=
re);
> -
> - =A0 =A0 =A0 s->stream =3D substream;
> - =A0 =A0 =A0 return 0;
> -}
> -
> -static int psc_i2s_pcm_close(struct snd_pcm_substream *substream)
> -{
> - =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D substream->private_data=
;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> - =A0 =A0 =A0 struct psc_i2s_stream *s;
> -
> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_pcm_close(substream=3D%p)\n"=
, substream);
> -
> - =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTURE=
)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
> - =A0 =A0 =A0 else
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
> -
> - =A0 =A0 =A0 s->stream =3D NULL;
> - =A0 =A0 =A0 return 0;
> -}
> -
> -static snd_pcm_uframes_t
> -psc_i2s_pcm_pointer(struct snd_pcm_substream *substream)
> -{
> - =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D substream->private_data=
;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> - =A0 =A0 =A0 struct psc_i2s_stream *s;
> - =A0 =A0 =A0 dma_addr_t count;
> -
> - =A0 =A0 =A0 if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTURE=
)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
> - =A0 =A0 =A0 else
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
> -
> - =A0 =A0 =A0 count =3D s->period_current_pt - s->period_start;
> -
> - =A0 =A0 =A0 return bytes_to_frames(substream->runtime, count);
> -}
> -
> -static struct snd_pcm_ops psc_i2s_pcm_ops =3D {
> - =A0 =A0 =A0 .open =A0 =A0 =A0 =A0 =A0 =3D psc_i2s_pcm_open,
> - =A0 =A0 =A0 .close =A0 =A0 =A0 =A0 =A0=3D psc_i2s_pcm_close,
> - =A0 =A0 =A0 .ioctl =A0 =A0 =A0 =A0 =A0=3D snd_pcm_lib_ioctl,
> - =A0 =A0 =A0 .pointer =A0 =A0 =A0 =A0=3D psc_i2s_pcm_pointer,
> -};
> -
> -static u64 psc_i2s_pcm_dmamask =3D 0xffffffff;
> -static int psc_i2s_pcm_new(struct snd_card *card, struct snd_soc_dai *da=
i,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0struct snd_pcm *pcm)
> -{
> - =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D pcm->private_data;
> - =A0 =A0 =A0 size_t size =3D psc_i2s_pcm_hardware.buffer_bytes_max;
> - =A0 =A0 =A0 int rc =3D 0;
> -
> - =A0 =A0 =A0 dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_new(card=3D%p, dai=
=3D%p, pcm=3D%p)\n",
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 card, dai, pcm);
> -
> - =A0 =A0 =A0 if (!card->dev->dma_mask)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 card->dev->dma_mask =3D &psc_i2s_pcm_dmamas=
k;
> - =A0 =A0 =A0 if (!card->dev->coherent_dma_mask)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 card->dev->coherent_dma_mask =3D 0xffffffff=
;
> -
> - =A0 =A0 =A0 if (pcm->streams[0].substream) {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc =3D snd_dma_alloc_pages(SNDRV_DMA_TYPE_D=
EV, pcm->dev, size,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 &pcm->streams[0].substream->dma_buffer);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (rc)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 goto playback_alloc_err;
> - =A0 =A0 =A0 }
> -
> - =A0 =A0 =A0 if (pcm->streams[1].substream) {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc =3D snd_dma_alloc_pages(SNDRV_DMA_TYPE_D=
EV, pcm->dev, size,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 =A0 &pcm->streams[1].substream->dma_buffer);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (rc)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 goto capture_alloc_err;
> - =A0 =A0 =A0 }
> -
> - =A0 =A0 =A0 return 0;
> -
> - capture_alloc_err:
> - =A0 =A0 =A0 if (pcm->streams[0].substream)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 snd_dma_free_pages(&pcm->streams[0].substre=
am->dma_buffer);
> - playback_alloc_err:
> - =A0 =A0 =A0 dev_err(card->dev, "Cannot allocate buffer(s)\n");
> - =A0 =A0 =A0 return -ENOMEM;
> -}
> -
> -static void psc_i2s_pcm_free(struct snd_pcm *pcm)
> -{
> - =A0 =A0 =A0 struct snd_soc_pcm_runtime *rtd =3D pcm->private_data;
> - =A0 =A0 =A0 struct snd_pcm_substream *substream;
> - =A0 =A0 =A0 int stream;
> -
> - =A0 =A0 =A0 dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_free(pcm=3D%p)\n", p=
cm);
> -
> - =A0 =A0 =A0 for (stream =3D 0; stream < 2; stream++) {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 substream =3D pcm->streams[stream].substrea=
m;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (substream) {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 snd_dma_free_pages(&substre=
am->dma_buffer);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 substream->dma_buffer.area =
=3D NULL;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 substream->dma_buffer.addr =
=3D 0;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 }
> - =A0 =A0 =A0 }
> -}
> -
> -struct snd_soc_platform psc_i2s_pcm_soc_platform =3D {
> - =A0 =A0 =A0 .name =A0 =A0 =A0 =A0 =A0 =3D "mpc5200-psc-audio",
> - =A0 =A0 =A0 .pcm_ops =A0 =A0 =A0 =A0=3D &psc_i2s_pcm_ops,
> - =A0 =A0 =A0 .pcm_new =A0 =A0 =A0 =A0=3D &psc_i2s_pcm_new,
> - =A0 =A0 =A0 .pcm_free =A0 =A0 =A0 =3D &psc_i2s_pcm_free,
> -};
> -
> -/* ---------------------------------------------------------------------
> =A0* Sysfs attributes for debugging
> =A0*/
>
>
>



--=20
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.

Re: [PATCH V1 2/3] Rename the PSC functions to DMA

[Grant Likely]

On Sun, Apr 26, 2009 at 1:53 PM, Jon Smirl <jonsmirl@gmail.com> wrote:
> Rename the functions in the mpc5200 DMA file from i2s to dma to reflect t=
he file they are in.
>
> Signed-off-by: Jon Smirl <jonsmirl@gmail.com>

Acked-by: Grant Likely <grant.likely@secretlab.ca>


> ---
> =A0sound/soc/fsl/mpc5200_dma.c =A0 =A0 | =A0194 ++++++++++++++++++++-----=
--------------
> =A0sound/soc/fsl/mpc5200_dma.h =A0 =A0 | =A0 26 +++--
> =A0sound/soc/fsl/mpc5200_psc_i2s.c | =A0160 ++++++++++++++++-------------=
---
> =A03 files changed, 190 insertions(+), 190 deletions(-)
>
> diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c
> index cccaff4..c82ef75 100644
> --- a/sound/soc/fsl/mpc5200_dma.c
> +++ b/sound/soc/fsl/mpc5200_dma.c
> @@ -34,21 +34,21 @@ MODULE_LICENSE("GPL");
> =A0/*
> =A0* Interrupt handlers
> =A0*/
> -static irqreturn_t psc_i2s_status_irq(int irq, void *_psc_i2s)
> +static irqreturn_t psc_dma_status_irq(int irq, void *_psc_dma)
> =A0{
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D _psc_i2s;
> - =A0 =A0 =A0 struct mpc52xx_psc __iomem *regs =3D psc_i2s->psc_regs;
> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D _psc_dma;
> + =A0 =A0 =A0 struct mpc52xx_psc __iomem *regs =3D psc_dma->psc_regs;
> =A0 =A0 =A0 =A0u16 isr;
>
> =A0 =A0 =A0 =A0isr =3D in_be16(&regs->mpc52xx_psc_isr);
>
> =A0 =A0 =A0 =A0/* Playback underrun error */
> - =A0 =A0 =A0 if (psc_i2s->playback.active && (isr & MPC52xx_PSC_IMR_TXEM=
P))
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s->stats.underrun_count++;
> + =A0 =A0 =A0 if (psc_dma->playback.active && (isr & MPC52xx_PSC_IMR_TXEM=
P))
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_dma->stats.underrun_count++;
>
> =A0 =A0 =A0 =A0/* Capture overrun error */
> - =A0 =A0 =A0 if (psc_i2s->capture.active && (isr & MPC52xx_PSC_IMR_ORERR=
))
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s->stats.overrun_count++;
> + =A0 =A0 =A0 if (psc_dma->capture.active && (isr & MPC52xx_PSC_IMR_ORERR=
))
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_dma->stats.overrun_count++;
>
> =A0 =A0 =A0 =A0out_8(&regs->command, 4 << 4); =A0/* reset the error statu=
s */
>
> @@ -56,7 +56,7 @@ static irqreturn_t psc_i2s_status_irq(int irq, void *_p=
sc_i2s)
> =A0}
>
> =A0/**
> - * psc_i2s_bcom_enqueue_next_buffer - Enqueue another audio buffer
> + * psc_dma_bcom_enqueue_next_buffer - Enqueue another audio buffer
> =A0* @s: pointer to stream private data structure
> =A0*
> =A0* Enqueues another audio period buffer into the bestcomm queue.
> @@ -65,7 +65,7 @@ static irqreturn_t psc_i2s_status_irq(int irq, void *_p=
sc_i2s)
> =A0* the queue. =A0Otherwise the enqueue will fail and the audio ring buf=
fer
> =A0* will get out of sync
> =A0*/
> -static void psc_i2s_bcom_enqueue_next_buffer(struct psc_i2s_stream *s)
> +static void psc_dma_bcom_enqueue_next_buffer(struct psc_dma_stream *s)
> =A0{
> =A0 =A0 =A0 =A0struct bcom_bd *bd;
>
> @@ -82,9 +82,9 @@ static void psc_i2s_bcom_enqueue_next_buffer(struct psc=
_i2s_stream *s)
> =A0}
>
> =A0/* Bestcomm DMA irq handler */
> -static irqreturn_t psc_i2s_bcom_irq(int irq, void *_psc_i2s_stream)
> +static irqreturn_t psc_dma_bcom_irq(int irq, void *_psc_dma_stream)
> =A0{
> - =A0 =A0 =A0 struct psc_i2s_stream *s =3D _psc_i2s_stream;
> + =A0 =A0 =A0 struct psc_dma_stream *s =3D _psc_dma_stream;
>
> =A0 =A0 =A0 =A0/* For each finished period, dequeue the completed period =
buffer
> =A0 =A0 =A0 =A0 * and enqueue a new one in it's place. */
> @@ -93,7 +93,7 @@ static irqreturn_t psc_i2s_bcom_irq(int irq, void *_psc=
_i2s_stream)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0s->period_current_pt +=3D s->period_bytes;
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0if (s->period_current_pt >=3D s->period_en=
d)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0s->period_current_pt =3D s=
->period_start;
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s_bcom_enqueue_next_buffer(s);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_dma_bcom_enqueue_next_buffer(s);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0bcom_enable(s->bcom_task);
> =A0 =A0 =A0 =A0}
>
> @@ -106,39 +106,39 @@ static irqreturn_t psc_i2s_bcom_irq(int irq, void *=
_psc_i2s_stream)
> =A0}
>
> =A0/**
> - * psc_i2s_startup: create a new substream
> + * psc_dma_startup: create a new substream
> =A0*
> =A0* This is the first function called when a stream is opened.
> =A0*
> =A0* If this is the first stream open, then grab the IRQ and program most=
 of
> =A0* the PSC registers.
> =A0*/
> -int psc_i2s_startup(struct snd_pcm_substream *substream,
> +int psc_dma_startup(struct snd_pcm_substream *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *d=
ai)
> =A0{
> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_dat=
a;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D rtd->dai->cpu_dai->private_data=
;
> =A0 =A0 =A0 =A0int rc;
>
> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_startup(substream=3D%p)\n", =
substream);
> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "psc_dma_startup(substream=3D%p)\n", =
substream);
>
> - =A0 =A0 =A0 if (!psc_i2s->playback.active &&
> - =A0 =A0 =A0 =A0 =A0 !psc_i2s->capture.active) {
> + =A0 =A0 =A0 if (!psc_dma->playback.active &&
> + =A0 =A0 =A0 =A0 =A0 !psc_dma->capture.active) {
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0/* Setup the IRQs */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc =3D request_irq(psc_i2s->irq, &psc_i2s_s=
tatus_irq, IRQF_SHARED,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0"psc-i2s=
-status", psc_i2s);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc |=3D request_irq(psc_i2s->capture.irq,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 &psc_i2=
s_bcom_irq, IRQF_SHARED,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 "psc-i2=
s-capture", &psc_i2s->capture);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc |=3D request_irq(psc_i2s->playback.irq,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 &psc_i2=
s_bcom_irq, IRQF_SHARED,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 "psc-i2=
s-playback", &psc_i2s->playback);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc =3D request_irq(psc_dma->irq, &psc_dma_s=
tatus_irq, IRQF_SHARED,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0"psc-dma=
-status", psc_dma);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc |=3D request_irq(psc_dma->capture.irq,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 &psc_dm=
a_bcom_irq, IRQF_SHARED,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 "psc-dm=
a-capture", &psc_dma->capture);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc |=3D request_irq(psc_dma->playback.irq,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 &psc_dm=
a_bcom_irq, IRQF_SHARED,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 "psc-dm=
a-playback", &psc_dma->playback);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0if (rc) {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->irq, psc_=
i2s);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->capture.i=
rq,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0&psc_i2s=
->capture);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->playback.=
irq,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0&psc_i2s=
->playback);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_dma->irq, psc_=
dma);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_dma->capture.i=
rq,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0&psc_dma=
->capture);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_dma->playback.=
irq,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0&psc_dma=
->playback);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return -ENODEV;
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0}
> =A0 =A0 =A0 =A0}
> @@ -146,7 +146,7 @@ int psc_i2s_startup(struct snd_pcm_substream *substre=
am,
> =A0 =A0 =A0 =A0return 0;
> =A0}
>
> -int psc_i2s_hw_free(struct snd_pcm_substream *substream,
> +int psc_dma_hw_free(struct snd_pcm_substream *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *d=
ai)
> =A0{
> =A0 =A0 =A0 =A0snd_pcm_set_runtime_buffer(substream, NULL);
> @@ -154,29 +154,29 @@ int psc_i2s_hw_free(struct snd_pcm_substream *subst=
ream,
> =A0}
>
> =A0/**
> - * psc_i2s_trigger: start and stop the DMA transfer.
> + * psc_dma_trigger: start and stop the DMA transfer.
> =A0*
> =A0* This function is called by ALSA to start, stop, pause, and resume th=
e DMA
> =A0* transfer of data.
> =A0*/
> -int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
> +int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *d=
ai)
> =A0{
> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_dat=
a;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D rtd->dai->cpu_dai->private_data=
;
> =A0 =A0 =A0 =A0struct snd_pcm_runtime *runtime =3D substream->runtime;
> - =A0 =A0 =A0 struct psc_i2s_stream *s;
> - =A0 =A0 =A0 struct mpc52xx_psc __iomem *regs =3D psc_i2s->psc_regs;
> + =A0 =A0 =A0 struct psc_dma_stream *s;
> + =A0 =A0 =A0 struct mpc52xx_psc __iomem *regs =3D psc_dma->psc_regs;
> =A0 =A0 =A0 =A0u16 imr;
> =A0 =A0 =A0 =A0u8 psc_cmd;
> =A0 =A0 =A0 =A0unsigned long flags;
>
> =A0 =A0 =A0 =A0if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTUR=
E)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->capture;
> =A0 =A0 =A0 =A0else
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->playback;
>
> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_trigger(substream=3D%p, cmd=
=3D%i)"
> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "psc_dma_trigger(substream=3D%p, cmd=
=3D%i)"
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0" stream_id=3D%i\n",
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0substream, cmd, substream->pstr->stream);
>
> @@ -207,14 +207,14 @@ int psc_i2s_trigger(struct snd_pcm_substream *subst=
ream, int cmd,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0else
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0bcom_gen_bd_tx_reset(s->bc=
om_task);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0while (!bcom_queue_full(s->bcom_task))
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s_bcom_enqueue_next_b=
uffer(s);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_dma_bcom_enqueue_next_b=
uffer(s);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0bcom_enable(s->bcom_task);
>
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Due to errata in the i2s mode; need to l=
ine up enabling
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Due to errata in the dma mode; need to l=
ine up enabling
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 * the transmitter with a transition on th=
e frame sync
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 * line */
>
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 spin_lock_irqsave(&psc_i2s->lock, flags);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 spin_lock_irqsave(&psc_dma->lock, flags);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0/* first make sure it is low */
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0while ((in_8(&regs->ipcr_acr.ipcr) & 0x80)=
 !=3D 0)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0;
> @@ -228,7 +228,7 @@ int psc_i2s_trigger(struct snd_pcm_substream *substre=
am, int cmd,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0if (substream->pstr->stream =3D=3D SNDRV_P=
CM_STREAM_PLAYBACK)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0psc_cmd |=3D MPC52xx_PSC_T=
X_ENABLE;
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0out_8(&regs->command, psc_cmd);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 spin_unlock_irqrestore(&psc_i2s->lock, flag=
s);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 spin_unlock_irqrestore(&psc_dma->lock, flag=
s);
>
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0break;
>
> @@ -236,7 +236,7 @@ int psc_i2s_trigger(struct snd_pcm_substream *substre=
am, int cmd,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0/* Turn off the PSC */
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0s->active =3D 0;
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0if (substream->pstr->stream =3D=3D SNDRV_P=
CM_STREAM_CAPTURE) {
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!psc_i2s->playback.acti=
ve) {
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!psc_dma->playback.acti=
ve) {
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0out_8(&reg=
s->command, 2 << 4); =A0/* reset rx */
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0out_8(&reg=
s->command, 3 << 4); =A0/* reset tx */
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0out_8(&reg=
s->command, 4 << 4); =A0/* reset err */
> @@ -244,7 +244,7 @@ int psc_i2s_trigger(struct snd_pcm_substream *substre=
am, int cmd,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0} else {
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0out_8(&regs->command, 3 <<=
 4); =A0/* reset tx */
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0out_8(&regs->command, 4 <<=
 4); =A0/* reset err */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!psc_i2s->capture.activ=
e)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!psc_dma->capture.activ=
e)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0out_8(&reg=
s->command, 2 << 4); =A0/* reset rx */
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0}
>
> @@ -255,15 +255,15 @@ int psc_i2s_trigger(struct snd_pcm_substream *subst=
ream, int cmd,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0break;
>
> =A0 =A0 =A0 =A0default:
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "invalid command\n");
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 dev_dbg(psc_dma->dev, "invalid command\n");
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return -EINVAL;
> =A0 =A0 =A0 =A0}
>
> =A0 =A0 =A0 =A0/* Update interrupt enable settings */
> =A0 =A0 =A0 =A0imr =3D 0;
> - =A0 =A0 =A0 if (psc_i2s->playback.active)
> + =A0 =A0 =A0 if (psc_dma->playback.active)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0imr |=3D MPC52xx_PSC_IMR_TXEMP;
> - =A0 =A0 =A0 if (psc_i2s->capture.active)
> + =A0 =A0 =A0 if (psc_dma->capture.active)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0imr |=3D MPC52xx_PSC_IMR_ORERR;
> =A0 =A0 =A0 =A0out_be16(&regs->isr_imr.imr, imr);
>
> @@ -271,36 +271,36 @@ int psc_i2s_trigger(struct snd_pcm_substream *subst=
ream, int cmd,
> =A0}
>
> =A0/**
> - * psc_i2s_shutdown: shutdown the data transfer on a stream
> + * psc_dma_shutdown: shutdown the data transfer on a stream
> =A0*
> =A0* Shutdown the PSC if there are no other substreams open.
> =A0*/
> -void psc_i2s_shutdown(struct snd_pcm_substream *substream,
> +void psc_dma_shutdown(struct snd_pcm_substream *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_da=
i *dai)
> =A0{
> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_dat=
a;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D rtd->dai->cpu_dai->private_data=
;
>
> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_shutdown(substream=3D%p)\n",=
 substream);
> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "psc_dma_shutdown(substream=3D%p)\n",=
 substream);
>
> =A0 =A0 =A0 =A0/*
> =A0 =A0 =A0 =A0 * If this is the last active substream, disable the PSC a=
nd release
> =A0 =A0 =A0 =A0 * the IRQ.
> =A0 =A0 =A0 =A0 */
> - =A0 =A0 =A0 if (!psc_i2s->playback.active &&
> - =A0 =A0 =A0 =A0 =A0 !psc_i2s->capture.active) {
> + =A0 =A0 =A0 if (!psc_dma->playback.active &&
> + =A0 =A0 =A0 =A0 =A0 !psc_dma->capture.active) {
>
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0/* Disable all interrupts and reset the PS=
C */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_be16(&psc_i2s->psc_regs->isr_imr.imr, 0=
);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 3 << 4);=
 /* reset tx */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 2 << 4);=
 /* reset rx */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 1 << 4);=
 /* reset mode */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 4 << 4);=
 /* reset error */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_be16(&psc_dma->psc_regs->isr_imr.imr, 0=
);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 3 << 4);=
 /* reset tx */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 2 << 4);=
 /* reset rx */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 1 << 4);=
 /* reset mode */
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 4 << 4);=
 /* reset error */
>
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0/* Release irqs */
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->irq, psc_i2s);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->capture.irq, &psc_i2s->ca=
pture);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->playback.irq, &psc_i2s->p=
layback);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_dma->irq, psc_dma);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_dma->capture.irq, &psc_dma->ca=
pture);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_dma->playback.irq, &psc_dma->p=
layback);
> =A0 =A0 =A0 =A0}
> =A0}
>
> @@ -312,7 +312,7 @@ void psc_i2s_shutdown(struct snd_pcm_substream *subst=
ream,
> =A0* interaction with the attached codec
> =A0*/
>
> -static const struct snd_pcm_hardware psc_i2s_pcm_hardware =3D {
> +static const struct snd_pcm_hardware psc_dma_pcm_hardware =3D {
> =A0 =A0 =A0 =A0.info =3D SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID =
|
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_INF=
O_BLOCK_TRANSFER,
> =A0 =A0 =A0 =A0.formats =3D SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE=
 |
> @@ -329,80 +329,80 @@ static const struct snd_pcm_hardware psc_i2s_pcm_ha=
rdware =3D {
> =A0 =A0 =A0 =A0.fifo_size =A0 =A0 =A0 =A0 =A0 =A0 =A0=3D 0,
> =A0};
>
> -static int psc_i2s_pcm_open(struct snd_pcm_substream *substream)
> +static int psc_dma_pcm_open(struct snd_pcm_substream *substream)
> =A0{
> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_dat=
a;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> - =A0 =A0 =A0 struct psc_i2s_stream *s;
> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D rtd->dai->cpu_dai->private_data=
;
> + =A0 =A0 =A0 struct psc_dma_stream *s;
>
> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_pcm_open(substream=3D%p)\n",=
 substream);
> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "psc_dma_pcm_open(substream=3D%p)\n",=
 substream);
>
> =A0 =A0 =A0 =A0if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTUR=
E)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->capture;
> =A0 =A0 =A0 =A0else
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->playback;
>
> - =A0 =A0 =A0 snd_soc_set_runtime_hwparams(substream, &psc_i2s_pcm_hardwa=
re);
> + =A0 =A0 =A0 snd_soc_set_runtime_hwparams(substream, &psc_dma_pcm_hardwa=
re);
>
> =A0 =A0 =A0 =A0s->stream =3D substream;
> =A0 =A0 =A0 =A0return 0;
> =A0}
>
> -static int psc_i2s_pcm_close(struct snd_pcm_substream *substream)
> +static int psc_dma_pcm_close(struct snd_pcm_substream *substream)
> =A0{
> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_dat=
a;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> - =A0 =A0 =A0 struct psc_i2s_stream *s;
> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D rtd->dai->cpu_dai->private_data=
;
> + =A0 =A0 =A0 struct psc_dma_stream *s;
>
> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_pcm_close(substream=3D%p)\n"=
, substream);
> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "psc_dma_pcm_close(substream=3D%p)\n"=
, substream);
>
> =A0 =A0 =A0 =A0if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTUR=
E)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->capture;
> =A0 =A0 =A0 =A0else
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->playback;
>
> =A0 =A0 =A0 =A0s->stream =3D NULL;
> =A0 =A0 =A0 =A0return 0;
> =A0}
>
> =A0static snd_pcm_uframes_t
> -psc_i2s_pcm_pointer(struct snd_pcm_substream *substream)
> +psc_dma_pcm_pointer(struct snd_pcm_substream *substream)
> =A0{
> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_dat=
a;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> - =A0 =A0 =A0 struct psc_i2s_stream *s;
> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D rtd->dai->cpu_dai->private_data=
;
> + =A0 =A0 =A0 struct psc_dma_stream *s;
> =A0 =A0 =A0 =A0dma_addr_t count;
>
> =A0 =A0 =A0 =A0if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTUR=
E)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->capture;
> =A0 =A0 =A0 =A0else
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->playback;
>
> =A0 =A0 =A0 =A0count =3D s->period_current_pt - s->period_start;
>
> =A0 =A0 =A0 =A0return bytes_to_frames(substream->runtime, count);
> =A0}
>
> -static struct snd_pcm_ops psc_i2s_pcm_ops =3D {
> - =A0 =A0 =A0 .open =A0 =A0 =A0 =A0 =A0 =3D psc_i2s_pcm_open,
> - =A0 =A0 =A0 .close =A0 =A0 =A0 =A0 =A0=3D psc_i2s_pcm_close,
> +static struct snd_pcm_ops psc_dma_pcm_ops =3D {
> + =A0 =A0 =A0 .open =A0 =A0 =A0 =A0 =A0 =3D psc_dma_pcm_open,
> + =A0 =A0 =A0 .close =A0 =A0 =A0 =A0 =A0=3D psc_dma_pcm_close,
> =A0 =A0 =A0 =A0.ioctl =A0 =A0 =A0 =A0 =A0=3D snd_pcm_lib_ioctl,
> - =A0 =A0 =A0 .pointer =A0 =A0 =A0 =A0=3D psc_i2s_pcm_pointer,
> + =A0 =A0 =A0 .pointer =A0 =A0 =A0 =A0=3D psc_dma_pcm_pointer,
> =A0};
>
> -static u64 psc_i2s_pcm_dmamask =3D 0xffffffff;
> -static int psc_i2s_pcm_new(struct snd_card *card, struct snd_soc_dai *da=
i,
> +static u64 psc_dma_pcm_dmamask =3D 0xffffffff;
> +static int psc_dma_pcm_new(struct snd_card *card, struct snd_soc_dai *da=
i,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_pcm *pcm)
> =A0{
> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D pcm->private_data;
> - =A0 =A0 =A0 size_t size =3D psc_i2s_pcm_hardware.buffer_bytes_max;
> + =A0 =A0 =A0 size_t size =3D psc_dma_pcm_hardware.buffer_bytes_max;
> =A0 =A0 =A0 =A0int rc =3D 0;
>
> - =A0 =A0 =A0 dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_new(card=3D%p, dai=
=3D%p, pcm=3D%p)\n",
> + =A0 =A0 =A0 dev_dbg(rtd->socdev->dev, "psc_dma_pcm_new(card=3D%p, dai=
=3D%p, pcm=3D%p)\n",
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0card, dai, pcm);
>
> =A0 =A0 =A0 =A0if (!card->dev->dma_mask)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 card->dev->dma_mask =3D &psc_i2s_pcm_dmamas=
k;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 card->dev->dma_mask =3D &psc_dma_pcm_dmamas=
k;
> =A0 =A0 =A0 =A0if (!card->dev->coherent_dma_mask)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0card->dev->coherent_dma_mask =3D 0xfffffff=
f;
>
> @@ -430,13 +430,13 @@ static int psc_i2s_pcm_new(struct snd_card *card, s=
truct snd_soc_dai *dai,
> =A0 =A0 =A0 =A0return -ENOMEM;
> =A0}
>
> -static void psc_i2s_pcm_free(struct snd_pcm *pcm)
> +static void psc_dma_pcm_free(struct snd_pcm *pcm)
> =A0{
> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D pcm->private_data;
> =A0 =A0 =A0 =A0struct snd_pcm_substream *substream;
> =A0 =A0 =A0 =A0int stream;
>
> - =A0 =A0 =A0 dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_free(pcm=3D%p)\n", p=
cm);
> + =A0 =A0 =A0 dev_dbg(rtd->socdev->dev, "psc_dma_pcm_free(pcm=3D%p)\n", p=
cm);
>
> =A0 =A0 =A0 =A0for (stream =3D 0; stream < 2; stream++) {
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0substream =3D pcm->streams[stream].substre=
am;
> @@ -448,10 +448,10 @@ static void psc_i2s_pcm_free(struct snd_pcm *pcm)
> =A0 =A0 =A0 =A0}
> =A0}
>
> -struct snd_soc_platform psc_i2s_pcm_soc_platform =3D {
> +struct snd_soc_platform psc_dma_pcm_soc_platform =3D {
> =A0 =A0 =A0 =A0.name =A0 =A0 =A0 =A0 =A0 =3D "mpc5200-psc-audio",
> - =A0 =A0 =A0 .pcm_ops =A0 =A0 =A0 =A0=3D &psc_i2s_pcm_ops,
> - =A0 =A0 =A0 .pcm_new =A0 =A0 =A0 =A0=3D &psc_i2s_pcm_new,
> - =A0 =A0 =A0 .pcm_free =A0 =A0 =A0 =3D &psc_i2s_pcm_free,
> + =A0 =A0 =A0 .pcm_ops =A0 =A0 =A0 =A0=3D &psc_dma_pcm_ops,
> + =A0 =A0 =A0 .pcm_new =A0 =A0 =A0 =A0=3D &psc_dma_pcm_new,
> + =A0 =A0 =A0 .pcm_free =A0 =A0 =A0 =3D &psc_dma_pcm_free,
> =A0};
>
> diff --git a/sound/soc/fsl/mpc5200_dma.h b/sound/soc/fsl/mpc5200_dma.h
> index 9a19e8a..a33232c 100644
> --- a/sound/soc/fsl/mpc5200_dma.h
> +++ b/sound/soc/fsl/mpc5200_dma.h
> @@ -6,9 +6,9 @@
> =A0#define __SOUND_SOC_FSL_MPC5200_DMA_H__
>
> =A0/**
> - * psc_i2s_stream - Data specific to a single stream (playback or captur=
e)
> + * psc_dma_stream - Data specific to a single stream (playback or captur=
e)
> =A0* @active: =A0 =A0 =A0 =A0 =A0 =A0flag indicating if the stream is act=
ive
> - * @psc_i2s: =A0 =A0 =A0 =A0 =A0 pointer back to parent psc_i2s data str=
ucture
> + * @psc_dma: =A0 =A0 =A0 =A0 =A0 pointer back to parent psc_dma data str=
ucture
> =A0* @bcom_task: =A0 =A0 =A0 =A0 bestcomm task structure
> =A0* @irq: =A0 =A0 =A0 =A0 =A0 =A0 =A0 irq number for bestcomm task
> =A0* @period_start: =A0 =A0 =A0physical address of start of DMA region
> @@ -16,9 +16,9 @@
> =A0* @period_next_pt: =A0 =A0physical address of next DMA buffer to enque=
ue
> =A0* @period_bytes: =A0 =A0 =A0size of DMA period in bytes
> =A0*/
> -struct psc_i2s_stream {
> +struct psc_dma_stream {
> =A0 =A0 =A0 =A0int active;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s;
> + =A0 =A0 =A0 struct psc_dma *psc_dma;
> =A0 =A0 =A0 =A0struct bcom_task *bcom_task;
> =A0 =A0 =A0 =A0int irq;
> =A0 =A0 =A0 =A0struct snd_pcm_substream *stream;
> @@ -30,7 +30,7 @@ struct psc_i2s_stream {
> =A0};
>
> =A0/**
> - * psc_i2s - Private driver data
> + * psc_dma - Private driver data
> =A0* @name: short name for this device ("PSC0", "PSC1", etc)
> =A0* @psc_regs: pointer to the PSC's registers
> =A0* @fifo_regs: pointer to the PSC's FIFO registers
> @@ -42,7 +42,7 @@ struct psc_i2s_stream {
> =A0* @playback: Playback stream context data
> =A0* @capture: Capture stream context data
> =A0*/
> -struct psc_i2s {
> +struct psc_dma {
> =A0 =A0 =A0 =A0char name[32];
> =A0 =A0 =A0 =A0struct mpc52xx_psc __iomem *psc_regs;
> =A0 =A0 =A0 =A0struct mpc52xx_psc_fifo __iomem *fifo_regs;
> @@ -53,8 +53,8 @@ struct psc_i2s {
> =A0 =A0 =A0 =A0u32 sicr;
>
> =A0 =A0 =A0 =A0/* per-stream data */
> - =A0 =A0 =A0 struct psc_i2s_stream playback;
> - =A0 =A0 =A0 struct psc_i2s_stream capture;
> + =A0 =A0 =A0 struct psc_dma_stream playback;
> + =A0 =A0 =A0 struct psc_dma_stream capture;
>
> =A0 =A0 =A0 =A0/* Statistics */
> =A0 =A0 =A0 =A0struct {
> @@ -64,18 +64,18 @@ struct psc_i2s {
> =A0};
>
>
> -int psc_i2s_startup(struct snd_pcm_substream *substream,
> +int psc_dma_startup(struct snd_pcm_substream *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *d=
ai);
>
> -int psc_i2s_hw_free(struct snd_pcm_substream *substream,
> +int psc_dma_hw_free(struct snd_pcm_substream *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *d=
ai);
>
> -void psc_i2s_shutdown(struct snd_pcm_substream *substream,
> +void psc_dma_shutdown(struct snd_pcm_substream *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_da=
i *dai);
>
> -int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
> +int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *d=
ai);
>
> -extern struct snd_soc_platform psc_i2s_pcm_soc_platform;
> +extern struct snd_soc_platform psc_dma_pcm_soc_platform;
>
> =A0#endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */
> diff --git a/sound/soc/fsl/mpc5200_psc_i2s.c b/sound/soc/fsl/mpc5200_psc_=
i2s.c
> index 8974b53..12a7917 100644
> --- a/sound/soc/fsl/mpc5200_psc_i2s.c
> +++ b/sound/soc/fsl/mpc5200_psc_i2s.c
> @@ -54,10 +54,10 @@ static int psc_i2s_hw_params(struct snd_pcm_substream=
 *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct sn=
d_soc_dai *dai)
> =A0{
> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_dat=
a;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_data=
;
> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D rtd->dai->cpu_dai->private_data=
;
> =A0 =A0 =A0 =A0u32 mode;
>
> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "%s(substream=3D%p) p_size=3D%i p_byt=
es=3D%i"
> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "%s(substream=3D%p) p_size=3D%i p_byt=
es=3D%i"
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0" periods=3D%i buffer_size=3D%i =A0buffer_=
bytes=3D%i\n",
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0__func__, substream, params_period_size(pa=
rams),
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0params_period_bytes(params), params_period=
s(params),
> @@ -77,10 +77,10 @@ static int psc_i2s_hw_params(struct snd_pcm_substream=
 *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0mode =3D MPC52xx_PSC_SICR_SIM_CODEC_32;
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0break;
> =A0 =A0 =A0 =A0default:
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "invalid format\n");
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 dev_dbg(psc_dma->dev, "invalid format\n");
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return -EINVAL;
> =A0 =A0 =A0 =A0}
> - =A0 =A0 =A0 out_be32(&psc_i2s->psc_regs->sicr, psc_i2s->sicr | mode);
> + =A0 =A0 =A0 out_be32(&psc_dma->psc_regs->sicr, psc_dma->sicr | mode);
>
> =A0 =A0 =A0 =A0snd_pcm_set_runtime_buffer(substream, &substream->dma_buff=
er);
>
> @@ -104,8 +104,8 @@ static int psc_i2s_hw_params(struct snd_pcm_substream=
 *substream,
> =A0static int psc_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0int clk_id, un=
signed int freq, int dir)
> =A0{
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D cpu_dai->private_data;
> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_set_sysclk(cpu_dai=3D%p, dir=
=3D%i)\n",
> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D cpu_dai->private_data;
> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "psc_i2s_set_sysclk(cpu_dai=3D%p, dir=
=3D%i)\n",
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0cpu_dai, d=
ir);
> =A0 =A0 =A0 =A0return (dir =3D=3D SND_SOC_CLOCK_IN) ? 0 : -EINVAL;
> =A0}
> @@ -123,8 +123,8 @@ static int psc_i2s_set_sysclk(struct snd_soc_dai *cpu=
_dai,
> =A0*/
> =A0static int psc_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int f=
ormat)
> =A0{
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D cpu_dai->private_data;
> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_set_fmt(cpu_dai=3D%p, format=
=3D%i)\n",
> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D cpu_dai->private_data;
> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "psc_i2s_set_fmt(cpu_dai=3D%p, format=
=3D%i)\n",
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0cpu_dai, f=
ormat);
> =A0 =A0 =A0 =A0return (format =3D=3D SND_SOC_DAIFMT_I2S) ? 0 : -EINVAL;
> =A0}
> @@ -140,11 +140,11 @@ static int psc_i2s_set_fmt(struct snd_soc_dai *cpu_=
dai, unsigned int format)
> =A0* psc_i2s_dai_template: template CPU Digital Audio Interface
> =A0*/
> =A0static struct snd_soc_dai_ops psc_i2s_dai_ops =3D {
> - =A0 =A0 =A0 .startup =A0 =A0 =A0 =A0=3D psc_i2s_startup,
> + =A0 =A0 =A0 .startup =A0 =A0 =A0 =A0=3D psc_dma_startup,
> =A0 =A0 =A0 =A0.hw_params =A0 =A0 =A0=3D psc_i2s_hw_params,
> - =A0 =A0 =A0 .hw_free =A0 =A0 =A0 =A0=3D psc_i2s_hw_free,
> - =A0 =A0 =A0 .shutdown =A0 =A0 =A0 =3D psc_i2s_shutdown,
> - =A0 =A0 =A0 .trigger =A0 =A0 =A0 =A0=3D psc_i2s_trigger,
> + =A0 =A0 =A0 .hw_free =A0 =A0 =A0 =A0=3D psc_dma_hw_free,
> + =A0 =A0 =A0 .shutdown =A0 =A0 =A0 =3D psc_dma_shutdown,
> + =A0 =A0 =A0 .trigger =A0 =A0 =A0 =A0=3D psc_dma_trigger,
> =A0 =A0 =A0 =A0.set_sysclk =A0 =A0 =3D psc_i2s_set_sysclk,
> =A0 =A0 =A0 =A0.set_fmt =A0 =A0 =A0 =A0=3D psc_i2s_set_fmt,
> =A0};
> @@ -172,24 +172,24 @@ static struct snd_soc_dai psc_i2s_dai_template =3D =
{
> =A0static ssize_t psc_i2s_status_show(struct device *dev,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct device_attribu=
te *attr, char *buf)
> =A0{
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D dev_get_drvdata(dev);
> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D dev_get_drvdata(dev);
>
> =A0 =A0 =A0 =A0return sprintf(buf, "status=3D%.4x sicr=3D%.8x rfnum=3D%i =
rfstat=3D0x%.4x "
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0"tfnum=3D%i tfstat=3D0x%.4=
x\n",
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_i2s->psc_regs-=
>sr_csr.status),
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be32(&psc_i2s->psc_regs-=
>sicr),
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_i2s->fifo_regs=
->rfnum) & 0x1ff,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_i2s->fifo_regs=
->rfstat),
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_i2s->fifo_regs=
->tfnum) & 0x1ff,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_i2s->fifo_regs=
->tfstat));
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_dma->psc_regs-=
>sr_csr.status),
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be32(&psc_dma->psc_regs-=
>sicr),
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_dma->fifo_regs=
->rfnum) & 0x1ff,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_dma->fifo_regs=
->rfstat),
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_dma->fifo_regs=
->tfnum) & 0x1ff,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_dma->fifo_regs=
->tfstat));
> =A0}
>
> -static int *psc_i2s_get_stat_attr(struct psc_i2s *psc_i2s, const char *n=
ame)
> +static int *psc_i2s_get_stat_attr(struct psc_dma *psc_dma, const char *n=
ame)
> =A0{
> =A0 =A0 =A0 =A0if (strcmp(name, "playback_underrun") =3D=3D 0)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 return &psc_i2s->stats.underrun_count;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 return &psc_dma->stats.underrun_count;
> =A0 =A0 =A0 =A0if (strcmp(name, "capture_overrun") =3D=3D 0)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 return &psc_i2s->stats.overrun_count;
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 return &psc_dma->stats.overrun_count;
>
> =A0 =A0 =A0 =A0return NULL;
> =A0}
> @@ -197,10 +197,10 @@ static int *psc_i2s_get_stat_attr(struct psc_i2s *p=
sc_i2s, const char *name)
> =A0static ssize_t psc_i2s_stat_show(struct device *dev,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct de=
vice_attribute *attr, char *buf)
> =A0{
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D dev_get_drvdata(dev);
> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D dev_get_drvdata(dev);
> =A0 =A0 =A0 =A0int *attrib;
>
> - =A0 =A0 =A0 attrib =3D psc_i2s_get_stat_attr(psc_i2s, attr->attr.name);
> + =A0 =A0 =A0 attrib =3D psc_i2s_get_stat_attr(psc_dma, attr->attr.name);
> =A0 =A0 =A0 =A0if (!attrib)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return 0;
>
> @@ -212,10 +212,10 @@ static ssize_t psc_i2s_stat_store(struct device *de=
v,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0const =
char *buf,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0size_t=
 count)
> =A0{
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D dev_get_drvdata(dev);
> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D dev_get_drvdata(dev);
> =A0 =A0 =A0 =A0int *attrib;
>
> - =A0 =A0 =A0 attrib =3D psc_i2s_get_stat_attr(psc_i2s, attr->attr.name);
> + =A0 =A0 =A0 attrib =3D psc_i2s_get_stat_attr(psc_dma, attr->attr.name);
> =A0 =A0 =A0 =A0if (!attrib)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return 0;
>
> @@ -238,7 +238,7 @@ static int __devinit psc_i2s_of_probe(struct of_devic=
e *op,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0const struct of_device_id *match)
> =A0{
> =A0 =A0 =A0 =A0phys_addr_t fifo;
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s;
> + =A0 =A0 =A0 struct psc_dma *psc_dma;
> =A0 =A0 =A0 =A0struct resource res;
> =A0 =A0 =A0 =A0int size, psc_id, irq, rc;
> =A0 =A0 =A0 =A0const __be32 *prop;
> @@ -265,56 +265,56 @@ static int __devinit psc_i2s_of_probe(struct of_dev=
ice *op,
> =A0 =A0 =A0 =A0}
>
> =A0 =A0 =A0 =A0/* Allocate and initialize the driver private data */
> - =A0 =A0 =A0 psc_i2s =3D kzalloc(sizeof *psc_i2s, GFP_KERNEL);
> - =A0 =A0 =A0 if (!psc_i2s) {
> + =A0 =A0 =A0 psc_dma =3D kzalloc(sizeof *psc_dma, GFP_KERNEL);
> + =A0 =A0 =A0 if (!psc_dma) {
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0iounmap(regs);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return -ENOMEM;
> =A0 =A0 =A0 =A0}
> - =A0 =A0 =A0 spin_lock_init(&psc_i2s->lock);
> - =A0 =A0 =A0 psc_i2s->irq =3D irq;
> - =A0 =A0 =A0 psc_i2s->psc_regs =3D regs;
> - =A0 =A0 =A0 psc_i2s->fifo_regs =3D regs + sizeof *psc_i2s->psc_regs;
> - =A0 =A0 =A0 psc_i2s->dev =3D &op->dev;
> - =A0 =A0 =A0 psc_i2s->playback.psc_i2s =3D psc_i2s;
> - =A0 =A0 =A0 psc_i2s->capture.psc_i2s =3D psc_i2s;
> - =A0 =A0 =A0 snprintf(psc_i2s->name, sizeof psc_i2s->name, "PSC%u", psc_=
id+1);
> + =A0 =A0 =A0 spin_lock_init(&psc_dma->lock);
> + =A0 =A0 =A0 psc_dma->irq =3D irq;
> + =A0 =A0 =A0 psc_dma->psc_regs =3D regs;
> + =A0 =A0 =A0 psc_dma->fifo_regs =3D regs + sizeof *psc_dma->psc_regs;
> + =A0 =A0 =A0 psc_dma->dev =3D &op->dev;
> + =A0 =A0 =A0 psc_dma->playback.psc_dma =3D psc_dma;
> + =A0 =A0 =A0 psc_dma->capture.psc_dma =3D psc_dma;
> + =A0 =A0 =A0 snprintf(psc_dma->name, sizeof psc_dma->name, "PSC%u", psc_=
id+1);
>
> =A0 =A0 =A0 =A0/* Fill out the CPU DAI structure */
> - =A0 =A0 =A0 memcpy(&psc_i2s->dai, &psc_i2s_dai_template, sizeof psc_i2s=
->dai);
> - =A0 =A0 =A0 psc_i2s->dai.private_data =3D psc_i2s;
> - =A0 =A0 =A0 psc_i2s->dai.name =3D psc_i2s->name;
> - =A0 =A0 =A0 psc_i2s->dai.id =3D psc_id;
> + =A0 =A0 =A0 memcpy(&psc_dma->dai, &psc_i2s_dai_template, sizeof psc_dma=
->dai);
> + =A0 =A0 =A0 psc_dma->dai.private_data =3D psc_dma;
> + =A0 =A0 =A0 psc_dma->dai.name =3D psc_dma->name;
> + =A0 =A0 =A0 psc_dma->dai.id =3D psc_id;
>
> =A0 =A0 =A0 =A0/* Find the address of the fifo data registers and setup t=
he
> =A0 =A0 =A0 =A0 * DMA tasks */
> =A0 =A0 =A0 =A0fifo =3D res.start + offsetof(struct mpc52xx_psc, buffer.b=
uffer_32);
> - =A0 =A0 =A0 psc_i2s->capture.bcom_task =3D
> + =A0 =A0 =A0 psc_dma->capture.bcom_task =3D
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0bcom_psc_gen_bd_rx_init(psc_id, 10, fifo, =
512);
> - =A0 =A0 =A0 psc_i2s->playback.bcom_task =3D
> + =A0 =A0 =A0 psc_dma->playback.bcom_task =3D
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0bcom_psc_gen_bd_tx_init(psc_id, 10, fifo);
> - =A0 =A0 =A0 if (!psc_i2s->capture.bcom_task ||
> - =A0 =A0 =A0 =A0 =A0 !psc_i2s->playback.bcom_task) {
> + =A0 =A0 =A0 if (!psc_dma->capture.bcom_task ||
> + =A0 =A0 =A0 =A0 =A0 !psc_dma->playback.bcom_task) {
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0dev_err(&op->dev, "Could not allocate best=
comm tasks\n");
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0iounmap(regs);
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 kfree(psc_i2s);
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 kfree(psc_dma);
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return -ENODEV;
> =A0 =A0 =A0 =A0}
>
> =A0 =A0 =A0 =A0/* Disable all interrupts and reset the PSC */
> - =A0 =A0 =A0 out_be16(&psc_i2s->psc_regs->isr_imr.imr, 0);
> - =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 3 << 4); /* reset transm=
itter */
> - =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 2 << 4); /* reset receiv=
er */
> - =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 1 << 4); /* reset mode *=
/
> - =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 4 << 4); /* reset error =
*/
> + =A0 =A0 =A0 out_be16(&psc_dma->psc_regs->isr_imr.imr, 0);
> + =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 3 << 4); /* reset transm=
itter */
> + =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 2 << 4); /* reset receiv=
er */
> + =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 1 << 4); /* reset mode *=
/
> + =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 4 << 4); /* reset error =
*/
>
> =A0 =A0 =A0 =A0/* Configure the serial interface mode; defaulting to CODE=
C8 mode */
> - =A0 =A0 =A0 psc_i2s->sicr =3D MPC52xx_PSC_SICR_DTS1 | MPC52xx_PSC_SICR_=
I2S |
> + =A0 =A0 =A0 psc_dma->sicr =3D MPC52xx_PSC_SICR_DTS1 | MPC52xx_PSC_SICR_=
I2S |
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0MPC52xx_PSC_SICR_CLKPOL;
> =A0 =A0 =A0 =A0if (of_get_property(op->node, "fsl,cellslave", NULL))
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s->sicr |=3D MPC52xx_PSC_SICR_CELLSLA=
VE |
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_dma->sicr |=3D MPC52xx_PSC_SICR_CELLSLA=
VE |
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 MPC52xx_P=
SC_SICR_GENCLK;
> - =A0 =A0 =A0 out_be32(&psc_i2s->psc_regs->sicr,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0psc_i2s->sicr | MPC52xx_PSC_SICR_SIM_COD=
EC_8);
> + =A0 =A0 =A0 out_be32(&psc_dma->psc_regs->sicr,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0psc_dma->sicr | MPC52xx_PSC_SICR_SIM_COD=
EC_8);
>
> =A0 =A0 =A0 =A0/* Check for the codec handle. =A0If it is not present the=
n we
> =A0 =A0 =A0 =A0 * are done */
> @@ -325,54 +325,54 @@ static int __devinit psc_i2s_of_probe(struct of_dev=
ice *op,
> =A0 =A0 =A0 =A0 * First write: RxRdy (FIFO Alarm) generates rx FIFO irq
> =A0 =A0 =A0 =A0 * Second write: register Normal mode for non loopback
> =A0 =A0 =A0 =A0 */
> - =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->mode, 0);
> - =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->mode, 0);
> + =A0 =A0 =A0 out_8(&psc_dma->psc_regs->mode, 0);
> + =A0 =A0 =A0 out_8(&psc_dma->psc_regs->mode, 0);
>
> =A0 =A0 =A0 =A0/* Set the TX and RX fifo alarm thresholds */
> - =A0 =A0 =A0 out_be16(&psc_i2s->fifo_regs->rfalarm, 0x100);
> - =A0 =A0 =A0 out_8(&psc_i2s->fifo_regs->rfcntl, 0x4);
> - =A0 =A0 =A0 out_be16(&psc_i2s->fifo_regs->tfalarm, 0x100);
> - =A0 =A0 =A0 out_8(&psc_i2s->fifo_regs->tfcntl, 0x7);
> + =A0 =A0 =A0 out_be16(&psc_dma->fifo_regs->rfalarm, 0x100);
> + =A0 =A0 =A0 out_8(&psc_dma->fifo_regs->rfcntl, 0x4);
> + =A0 =A0 =A0 out_be16(&psc_dma->fifo_regs->tfalarm, 0x100);
> + =A0 =A0 =A0 out_8(&psc_dma->fifo_regs->tfcntl, 0x7);
>
> =A0 =A0 =A0 =A0/* Lookup the IRQ numbers */
> - =A0 =A0 =A0 psc_i2s->playback.irq =3D
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_get_task_irq(psc_i2s->playback.bcom_ta=
sk);
> - =A0 =A0 =A0 psc_i2s->capture.irq =3D
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_get_task_irq(psc_i2s->capture.bcom_tas=
k);
> + =A0 =A0 =A0 psc_dma->playback.irq =3D
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_get_task_irq(psc_dma->playback.bcom_ta=
sk);
> + =A0 =A0 =A0 psc_dma->capture.irq =3D
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_get_task_irq(psc_dma->capture.bcom_tas=
k);
>
> =A0 =A0 =A0 =A0/* Save what we've done so it can be found again later */
> - =A0 =A0 =A0 dev_set_drvdata(&op->dev, psc_i2s);
> + =A0 =A0 =A0 dev_set_drvdata(&op->dev, psc_dma);
>
> =A0 =A0 =A0 =A0/* Register the SYSFS files */
> - =A0 =A0 =A0 rc =3D device_create_file(psc_i2s->dev, &dev_attr_status);
> - =A0 =A0 =A0 rc |=3D device_create_file(psc_i2s->dev, &dev_attr_capture_=
overrun);
> - =A0 =A0 =A0 rc |=3D device_create_file(psc_i2s->dev, &dev_attr_playback=
_underrun);
> + =A0 =A0 =A0 rc =3D device_create_file(psc_dma->dev, &dev_attr_status);
> + =A0 =A0 =A0 rc |=3D device_create_file(psc_dma->dev, &dev_attr_capture_=
overrun);
> + =A0 =A0 =A0 rc |=3D device_create_file(psc_dma->dev, &dev_attr_playback=
_underrun);
> =A0 =A0 =A0 =A0if (rc)
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 dev_info(psc_i2s->dev, "error creating sysf=
s files\n");
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 dev_info(psc_dma->dev, "error creating sysf=
s files\n");
>
> - =A0 =A0 =A0 snd_soc_register_platform(&psc_i2s_pcm_soc_platform);
> + =A0 =A0 =A0 snd_soc_register_platform(&psc_dma_pcm_soc_platform);
>
> =A0 =A0 =A0 =A0/* Tell the ASoC OF helpers about it */
> - =A0 =A0 =A0 of_snd_soc_register_platform(&psc_i2s_pcm_soc_platform, op-=
>node,
> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
&psc_i2s->dai);
> + =A0 =A0 =A0 of_snd_soc_register_platform(&psc_dma_pcm_soc_platform, op-=
>node,
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
&psc_dma->dai);
>
> =A0 =A0 =A0 =A0return 0;
> =A0}
>
> =A0static int __devexit psc_i2s_of_remove(struct of_device *op)
> =A0{
> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D dev_get_drvdata(&op->dev);
> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D dev_get_drvdata(&op->dev);
>
> =A0 =A0 =A0 =A0dev_dbg(&op->dev, "psc_i2s_remove()\n");
>
> - =A0 =A0 =A0 snd_soc_unregister_platform(&psc_i2s_pcm_soc_platform);
> + =A0 =A0 =A0 snd_soc_unregister_platform(&psc_dma_pcm_soc_platform);
>
> - =A0 =A0 =A0 bcom_gen_bd_rx_release(psc_i2s->capture.bcom_task);
> - =A0 =A0 =A0 bcom_gen_bd_tx_release(psc_i2s->playback.bcom_task);
> + =A0 =A0 =A0 bcom_gen_bd_rx_release(psc_dma->capture.bcom_task);
> + =A0 =A0 =A0 bcom_gen_bd_tx_release(psc_dma->playback.bcom_task);
>
> - =A0 =A0 =A0 iounmap(psc_i2s->psc_regs);
> - =A0 =A0 =A0 iounmap(psc_i2s->fifo_regs);
> - =A0 =A0 =A0 kfree(psc_i2s);
> + =A0 =A0 =A0 iounmap(psc_dma->psc_regs);
> + =A0 =A0 =A0 iounmap(psc_dma->fifo_regs);
> + =A0 =A0 =A0 kfree(psc_dma);
> =A0 =A0 =A0 =A0dev_set_drvdata(&op->dev, NULL);
>
> =A0 =A0 =A0 =A0return 0;
>
>



--=20
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.

Re: [PATCH V1 3/3] Rename exports in mpc5200_dma.c

[Grant Likely]

On Sun, Apr 26, 2009 at 1:53 PM, Jon Smirl <jonsmirl@gmail.com> wrote:
> Rename the public DMA exports into the global name space so that the DMA =
code can be built as a module.
>
> Signed-off-by: Jon Smirl <jonsmirl@gmail.com>

Nack.  mpc5200_dma is too generic for the global namespace... (in
fact, I should also relook at the previous patch; I might need to nack
my ack).  Some variant of 'mpc5200_psc_snd_dma' would be more
appropriate.  Even mpc5200_psc_dma is too generic because other
non-sound PSC modes can use DMA also.

g.

> ---
> =A0sound/soc/fsl/mpc5200_dma.c =A0 =A0 | =A0 18 ++++++++++++------
> =A0sound/soc/fsl/mpc5200_dma.h =A0 =A0 | =A0 10 +++++-----
> =A0sound/soc/fsl/mpc5200_psc_i2s.c | =A0 14 +++++++-------
> =A03 files changed, 24 insertions(+), 18 deletions(-)
>
> diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c
> index c82ef75..df73755 100644
> --- a/sound/soc/fsl/mpc5200_dma.c
> +++ b/sound/soc/fsl/mpc5200_dma.c
> @@ -113,7 +113,7 @@ static irqreturn_t psc_dma_bcom_irq(int irq, void *_p=
sc_dma_stream)
> =A0* If this is the first stream open, then grab the IRQ and program most=
 of
> =A0* the PSC registers.
> =A0*/
> -int psc_dma_startup(struct snd_pcm_substream *substream,
> +int mpc5200_dma_startup(struct snd_pcm_substream *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *d=
ai)
> =A0{
> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_dat=
a;
> @@ -145,13 +145,16 @@ int psc_dma_startup(struct snd_pcm_substream *subst=
ream,
>
> =A0 =A0 =A0 =A0return 0;
> =A0}
> +EXPORT_SYMBOL_GPL(mpc5200_dma_startup);
>
> -int psc_dma_hw_free(struct snd_pcm_substream *substream,
> +int mpc5200_dma_hw_free(struct snd_pcm_substream *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *d=
ai)
> =A0{
> =A0 =A0 =A0 =A0snd_pcm_set_runtime_buffer(substream, NULL);
> =A0 =A0 =A0 =A0return 0;
> =A0}
> +EXPORT_SYMBOL_GPL(mpc5200_dma_hw_free);
> +
>
> =A0/**
> =A0* psc_dma_trigger: start and stop the DMA transfer.
> @@ -159,7 +162,7 @@ int psc_dma_hw_free(struct snd_pcm_substream *substre=
am,
> =A0* This function is called by ALSA to start, stop, pause, and resume th=
e DMA
> =A0* transfer of data.
> =A0*/
> -int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
> +int mpc5200_dma_trigger(struct snd_pcm_substream *substream, int cmd,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *d=
ai)
> =A0{
> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_dat=
a;
> @@ -269,13 +272,15 @@ int psc_dma_trigger(struct snd_pcm_substream *subst=
ream, int cmd,
>
> =A0 =A0 =A0 =A0return 0;
> =A0}
> +EXPORT_SYMBOL_GPL(mpc5200_dma_trigger);
> +
>
> =A0/**
> =A0* psc_dma_shutdown: shutdown the data transfer on a stream
> =A0*
> =A0* Shutdown the PSC if there are no other substreams open.
> =A0*/
> -void psc_dma_shutdown(struct snd_pcm_substream *substream,
> +void mpc5200_dma_shutdown(struct snd_pcm_substream *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_da=
i *dai)
> =A0{
> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_dat=
a;
> @@ -303,6 +308,7 @@ void psc_dma_shutdown(struct snd_pcm_substream *subst=
ream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0free_irq(psc_dma->playback.irq, &psc_dma->=
playback);
> =A0 =A0 =A0 =A0}
> =A0}
> +EXPORT_SYMBOL_GPL(mpc5200_dma_shutdown);
>
> =A0/* -------------------------------------------------------------------=
--
> =A0* The PSC DMA 'ASoC platform' driver
> @@ -448,10 +454,10 @@ static void psc_dma_pcm_free(struct snd_pcm *pcm)
> =A0 =A0 =A0 =A0}
> =A0}
>
> -struct snd_soc_platform psc_dma_pcm_soc_platform =3D {
> +struct snd_soc_platform mpc5200_dma_platform =3D {
> =A0 =A0 =A0 =A0.name =A0 =A0 =A0 =A0 =A0 =3D "mpc5200-psc-audio",
> =A0 =A0 =A0 =A0.pcm_ops =A0 =A0 =A0 =A0=3D &psc_dma_pcm_ops,
> =A0 =A0 =A0 =A0.pcm_new =A0 =A0 =A0 =A0=3D &psc_dma_pcm_new,
> =A0 =A0 =A0 =A0.pcm_free =A0 =A0 =A0 =3D &psc_dma_pcm_free,
> =A0};
> -
> +EXPORT_SYMBOL_GPL(mpc5200_dma_platform);
> diff --git a/sound/soc/fsl/mpc5200_dma.h b/sound/soc/fsl/mpc5200_dma.h
> index a33232c..e52b90e 100644
> --- a/sound/soc/fsl/mpc5200_dma.h
> +++ b/sound/soc/fsl/mpc5200_dma.h
> @@ -64,18 +64,18 @@ struct psc_dma {
> =A0};
>
>
> -int psc_dma_startup(struct snd_pcm_substream *substream,
> +int mpc5200_dma_startup(struct snd_pcm_substream *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *d=
ai);
>
> -int psc_dma_hw_free(struct snd_pcm_substream *substream,
> +int mpc5200_dma_hw_free(struct snd_pcm_substream *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *d=
ai);
>
> -void psc_dma_shutdown(struct snd_pcm_substream *substream,
> +void mpc5200_dma_shutdown(struct snd_pcm_substream *substream,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_da=
i *dai);
>
> -int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
> +int mpc5200_dma_trigger(struct snd_pcm_substream *substream, int cmd,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *d=
ai);
>
> -extern struct snd_soc_platform psc_dma_pcm_soc_platform;
> +extern struct snd_soc_platform mpc5200_dma_platform;
>
> =A0#endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */
> diff --git a/sound/soc/fsl/mpc5200_psc_i2s.c b/sound/soc/fsl/mpc5200_psc_=
i2s.c
> index 12a7917..a4a439c 100644
> --- a/sound/soc/fsl/mpc5200_psc_i2s.c
> +++ b/sound/soc/fsl/mpc5200_psc_i2s.c
> @@ -140,11 +140,11 @@ static int psc_i2s_set_fmt(struct snd_soc_dai *cpu_=
dai, unsigned int format)
> =A0* psc_i2s_dai_template: template CPU Digital Audio Interface
> =A0*/
> =A0static struct snd_soc_dai_ops psc_i2s_dai_ops =3D {
> - =A0 =A0 =A0 .startup =A0 =A0 =A0 =A0=3D psc_dma_startup,
> + =A0 =A0 =A0 .startup =A0 =A0 =A0 =A0=3D mpc5200_dma_startup,
> =A0 =A0 =A0 =A0.hw_params =A0 =A0 =A0=3D psc_i2s_hw_params,
> - =A0 =A0 =A0 .hw_free =A0 =A0 =A0 =A0=3D psc_dma_hw_free,
> - =A0 =A0 =A0 .shutdown =A0 =A0 =A0 =3D psc_dma_shutdown,
> - =A0 =A0 =A0 .trigger =A0 =A0 =A0 =A0=3D psc_dma_trigger,
> + =A0 =A0 =A0 .hw_free =A0 =A0 =A0 =A0=3D mpc5200_dma_hw_free,
> + =A0 =A0 =A0 .shutdown =A0 =A0 =A0 =3D mpc5200_dma_shutdown,
> + =A0 =A0 =A0 .trigger =A0 =A0 =A0 =A0=3D mpc5200_dma_trigger,
> =A0 =A0 =A0 =A0.set_sysclk =A0 =A0 =3D psc_i2s_set_sysclk,
> =A0 =A0 =A0 =A0.set_fmt =A0 =A0 =A0 =A0=3D psc_i2s_set_fmt,
> =A0};
> @@ -350,10 +350,10 @@ static int __devinit psc_i2s_of_probe(struct of_dev=
ice *op,
> =A0 =A0 =A0 =A0if (rc)
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0dev_info(psc_dma->dev, "error creating sys=
fs files\n");
>
> - =A0 =A0 =A0 snd_soc_register_platform(&psc_dma_pcm_soc_platform);
> + =A0 =A0 =A0 snd_soc_register_platform(&mpc5200_dma_platform);
>
> =A0 =A0 =A0 =A0/* Tell the ASoC OF helpers about it */
> - =A0 =A0 =A0 of_snd_soc_register_platform(&psc_dma_pcm_soc_platform, op-=
>node,
> + =A0 =A0 =A0 of_snd_soc_register_platform(&mpc5200_dma_platform, op->nod=
e,
> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 &=
psc_dma->dai);
>
> =A0 =A0 =A0 =A0return 0;
> @@ -365,7 +365,7 @@ static int __devexit psc_i2s_of_remove(struct of_devi=
ce *op)
>
> =A0 =A0 =A0 =A0dev_dbg(&op->dev, "psc_i2s_remove()\n");
>
> - =A0 =A0 =A0 snd_soc_unregister_platform(&psc_dma_pcm_soc_platform);
> + =A0 =A0 =A0 snd_soc_unregister_platform(&mpc5200_dma_platform);
>
> =A0 =A0 =A0 =A0bcom_gen_bd_rx_release(psc_dma->capture.bcom_task);
> =A0 =A0 =A0 =A0bcom_gen_bd_tx_release(psc_dma->playback.bcom_task);
>
>



--=20
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.

Re: [PATCH V1 3/3] Rename exports in mpc5200_dma.c

[Jon Smirl]

On Mon, Apr 27, 2009 at 12:08 AM, Grant Likely
<grant.likely@secretlab.ca> wrote:
> On Sun, Apr 26, 2009 at 1:53 PM, Jon Smirl <jonsmirl@gmail.com> wrote:
>> Rename the public DMA exports into the global name space so that the DMA=
 code can be built as a module.
>>
>> Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
>
> Nack. =A0mpc5200_dma is too generic for the global namespace... (in
> fact, I should also relook at the previous patch; I might need to nack
> my ack). =A0Some variant of 'mpc5200_psc_snd_dma' would be more
> appropriate. =A0Even mpc5200_psc_dma is too generic because other
> non-sound PSC modes can use DMA also.

I'll change it to mpc5200_audio_dma and resend this to the series to
the alsa list.

Does your stuff still work with these patches? I want to get these
mechanical changes in so we can focus on the real changes in my later
patches.

>
> g.
>
>> ---
>> =A0sound/soc/fsl/mpc5200_dma.c =A0 =A0 | =A0 18 ++++++++++++------
>> =A0sound/soc/fsl/mpc5200_dma.h =A0 =A0 | =A0 10 +++++-----
>> =A0sound/soc/fsl/mpc5200_psc_i2s.c | =A0 14 +++++++-------
>> =A03 files changed, 24 insertions(+), 18 deletions(-)
>>
>> diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c
>> index c82ef75..df73755 100644
>> --- a/sound/soc/fsl/mpc5200_dma.c
>> +++ b/sound/soc/fsl/mpc5200_dma.c
>> @@ -113,7 +113,7 @@ static irqreturn_t psc_dma_bcom_irq(int irq, void *_=
psc_dma_stream)
>> =A0* If this is the first stream open, then grab the IRQ and program mos=
t of
>> =A0* the PSC registers.
>> =A0*/
>> -int psc_dma_startup(struct snd_pcm_substream *substream,
>> +int mpc5200_dma_startup(struct snd_pcm_substream *substream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *=
dai)
>> =A0{
>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_da=
ta;
>> @@ -145,13 +145,16 @@ int psc_dma_startup(struct snd_pcm_substream *subs=
tream,
>>
>> =A0 =A0 =A0 =A0return 0;
>> =A0}
>> +EXPORT_SYMBOL_GPL(mpc5200_dma_startup);
>>
>> -int psc_dma_hw_free(struct snd_pcm_substream *substream,
>> +int mpc5200_dma_hw_free(struct snd_pcm_substream *substream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *=
dai)
>> =A0{
>> =A0 =A0 =A0 =A0snd_pcm_set_runtime_buffer(substream, NULL);
>> =A0 =A0 =A0 =A0return 0;
>> =A0}
>> +EXPORT_SYMBOL_GPL(mpc5200_dma_hw_free);
>> +
>>
>> =A0/**
>> =A0* psc_dma_trigger: start and stop the DMA transfer.
>> @@ -159,7 +162,7 @@ int psc_dma_hw_free(struct snd_pcm_substream *substr=
eam,
>> =A0* This function is called by ALSA to start, stop, pause, and resume t=
he DMA
>> =A0* transfer of data.
>> =A0*/
>> -int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
>> +int mpc5200_dma_trigger(struct snd_pcm_substream *substream, int cmd,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *=
dai)
>> =A0{
>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_da=
ta;
>> @@ -269,13 +272,15 @@ int psc_dma_trigger(struct snd_pcm_substream *subs=
tream, int cmd,
>>
>> =A0 =A0 =A0 =A0return 0;
>> =A0}
>> +EXPORT_SYMBOL_GPL(mpc5200_dma_trigger);
>> +
>>
>> =A0/**
>> =A0* psc_dma_shutdown: shutdown the data transfer on a stream
>> =A0*
>> =A0* Shutdown the PSC if there are no other substreams open.
>> =A0*/
>> -void psc_dma_shutdown(struct snd_pcm_substream *substream,
>> +void mpc5200_dma_shutdown(struct snd_pcm_substream *substream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_d=
ai *dai)
>> =A0{
>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_da=
ta;
>> @@ -303,6 +308,7 @@ void psc_dma_shutdown(struct snd_pcm_substream *subs=
tream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0free_irq(psc_dma->playback.irq, &psc_dma-=
>playback);
>> =A0 =A0 =A0 =A0}
>> =A0}
>> +EXPORT_SYMBOL_GPL(mpc5200_dma_shutdown);
>>
>> =A0/* ------------------------------------------------------------------=
---
>> =A0* The PSC DMA 'ASoC platform' driver
>> @@ -448,10 +454,10 @@ static void psc_dma_pcm_free(struct snd_pcm *pcm)
>> =A0 =A0 =A0 =A0}
>> =A0}
>>
>> -struct snd_soc_platform psc_dma_pcm_soc_platform =3D {
>> +struct snd_soc_platform mpc5200_dma_platform =3D {
>> =A0 =A0 =A0 =A0.name =A0 =A0 =A0 =A0 =A0 =3D "mpc5200-psc-audio",
>> =A0 =A0 =A0 =A0.pcm_ops =A0 =A0 =A0 =A0=3D &psc_dma_pcm_ops,
>> =A0 =A0 =A0 =A0.pcm_new =A0 =A0 =A0 =A0=3D &psc_dma_pcm_new,
>> =A0 =A0 =A0 =A0.pcm_free =A0 =A0 =A0 =3D &psc_dma_pcm_free,
>> =A0};
>> -
>> +EXPORT_SYMBOL_GPL(mpc5200_dma_platform);
>> diff --git a/sound/soc/fsl/mpc5200_dma.h b/sound/soc/fsl/mpc5200_dma.h
>> index a33232c..e52b90e 100644
>> --- a/sound/soc/fsl/mpc5200_dma.h
>> +++ b/sound/soc/fsl/mpc5200_dma.h
>> @@ -64,18 +64,18 @@ struct psc_dma {
>> =A0};
>>
>>
>> -int psc_dma_startup(struct snd_pcm_substream *substream,
>> +int mpc5200_dma_startup(struct snd_pcm_substream *substream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *=
dai);
>>
>> -int psc_dma_hw_free(struct snd_pcm_substream *substream,
>> +int mpc5200_dma_hw_free(struct snd_pcm_substream *substream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *=
dai);
>>
>> -void psc_dma_shutdown(struct snd_pcm_substream *substream,
>> +void mpc5200_dma_shutdown(struct snd_pcm_substream *substream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_d=
ai *dai);
>>
>> -int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
>> +int mpc5200_dma_trigger(struct snd_pcm_substream *substream, int cmd,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *=
dai);
>>
>> -extern struct snd_soc_platform psc_dma_pcm_soc_platform;
>> +extern struct snd_soc_platform mpc5200_dma_platform;
>>
>> =A0#endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */
>> diff --git a/sound/soc/fsl/mpc5200_psc_i2s.c b/sound/soc/fsl/mpc5200_psc=
_i2s.c
>> index 12a7917..a4a439c 100644
>> --- a/sound/soc/fsl/mpc5200_psc_i2s.c
>> +++ b/sound/soc/fsl/mpc5200_psc_i2s.c
>> @@ -140,11 +140,11 @@ static int psc_i2s_set_fmt(struct snd_soc_dai *cpu=
_dai, unsigned int format)
>> =A0* psc_i2s_dai_template: template CPU Digital Audio Interface
>> =A0*/
>> =A0static struct snd_soc_dai_ops psc_i2s_dai_ops =3D {
>> - =A0 =A0 =A0 .startup =A0 =A0 =A0 =A0=3D psc_dma_startup,
>> + =A0 =A0 =A0 .startup =A0 =A0 =A0 =A0=3D mpc5200_dma_startup,
>> =A0 =A0 =A0 =A0.hw_params =A0 =A0 =A0=3D psc_i2s_hw_params,
>> - =A0 =A0 =A0 .hw_free =A0 =A0 =A0 =A0=3D psc_dma_hw_free,
>> - =A0 =A0 =A0 .shutdown =A0 =A0 =A0 =3D psc_dma_shutdown,
>> - =A0 =A0 =A0 .trigger =A0 =A0 =A0 =A0=3D psc_dma_trigger,
>> + =A0 =A0 =A0 .hw_free =A0 =A0 =A0 =A0=3D mpc5200_dma_hw_free,
>> + =A0 =A0 =A0 .shutdown =A0 =A0 =A0 =3D mpc5200_dma_shutdown,
>> + =A0 =A0 =A0 .trigger =A0 =A0 =A0 =A0=3D mpc5200_dma_trigger,
>> =A0 =A0 =A0 =A0.set_sysclk =A0 =A0 =3D psc_i2s_set_sysclk,
>> =A0 =A0 =A0 =A0.set_fmt =A0 =A0 =A0 =A0=3D psc_i2s_set_fmt,
>> =A0};
>> @@ -350,10 +350,10 @@ static int __devinit psc_i2s_of_probe(struct of_de=
vice *op,
>> =A0 =A0 =A0 =A0if (rc)
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0dev_info(psc_dma->dev, "error creating sy=
sfs files\n");
>>
>> - =A0 =A0 =A0 snd_soc_register_platform(&psc_dma_pcm_soc_platform);
>> + =A0 =A0 =A0 snd_soc_register_platform(&mpc5200_dma_platform);
>>
>> =A0 =A0 =A0 =A0/* Tell the ASoC OF helpers about it */
>> - =A0 =A0 =A0 of_snd_soc_register_platform(&psc_dma_pcm_soc_platform, op=
->node,
>> + =A0 =A0 =A0 of_snd_soc_register_platform(&mpc5200_dma_platform, op->no=
de,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
&psc_dma->dai);
>>
>> =A0 =A0 =A0 =A0return 0;
>> @@ -365,7 +365,7 @@ static int __devexit psc_i2s_of_remove(struct of_dev=
ice *op)
>>
>> =A0 =A0 =A0 =A0dev_dbg(&op->dev, "psc_i2s_remove()\n");
>>
>> - =A0 =A0 =A0 snd_soc_unregister_platform(&psc_dma_pcm_soc_platform);
>> + =A0 =A0 =A0 snd_soc_unregister_platform(&mpc5200_dma_platform);
>>
>> =A0 =A0 =A0 =A0bcom_gen_bd_rx_release(psc_dma->capture.bcom_task);
>> =A0 =A0 =A0 =A0bcom_gen_bd_tx_release(psc_dma->playback.bcom_task);
>>
>>
>
>
>
> --
> Grant Likely, B.Sc., P.Eng.
> Secret Lab Technologies Ltd.
>



--=20
Jon Smirl
jonsmirl@gmail.com

Re: [PATCH V1 2/3] Rename the PSC functions to DMA

[Grant Likely]

On Sun, Apr 26, 2009 at 10:04 PM, Grant Likely
<grant.likely@secretlab.ca> wrote:
> On Sun, Apr 26, 2009 at 1:53 PM, Jon Smirl <jonsmirl@gmail.com> wrote:
>> Rename the functions in the mpc5200 DMA file from i2s to dma to reflect =
the file they are in.
>>
>> Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
>
> Acked-by: Grant Likely <grant.likely@secretlab.ca>

Okay, I've taken a second look now (as per my comment on 3/3), and
yes, I'm still okay with the name changes because the header file
scope is restricted.  If this header was in include/linux/, then I'd
say the prefix should be more specific.

g.

>
>
>> ---
>> =A0sound/soc/fsl/mpc5200_dma.c =A0 =A0 | =A0194 ++++++++++++++++++++----=
---------------
>> =A0sound/soc/fsl/mpc5200_dma.h =A0 =A0 | =A0 26 +++--
>> =A0sound/soc/fsl/mpc5200_psc_i2s.c | =A0160 ++++++++++++++++------------=
----
>> =A03 files changed, 190 insertions(+), 190 deletions(-)
>>
>> diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c
>> index cccaff4..c82ef75 100644
>> --- a/sound/soc/fsl/mpc5200_dma.c
>> +++ b/sound/soc/fsl/mpc5200_dma.c
>> @@ -34,21 +34,21 @@ MODULE_LICENSE("GPL");
>> =A0/*
>> =A0* Interrupt handlers
>> =A0*/
>> -static irqreturn_t psc_i2s_status_irq(int irq, void *_psc_i2s)
>> +static irqreturn_t psc_dma_status_irq(int irq, void *_psc_dma)
>> =A0{
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D _psc_i2s;
>> - =A0 =A0 =A0 struct mpc52xx_psc __iomem *regs =3D psc_i2s->psc_regs;
>> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D _psc_dma;
>> + =A0 =A0 =A0 struct mpc52xx_psc __iomem *regs =3D psc_dma->psc_regs;
>> =A0 =A0 =A0 =A0u16 isr;
>>
>> =A0 =A0 =A0 =A0isr =3D in_be16(&regs->mpc52xx_psc_isr);
>>
>> =A0 =A0 =A0 =A0/* Playback underrun error */
>> - =A0 =A0 =A0 if (psc_i2s->playback.active && (isr & MPC52xx_PSC_IMR_TXE=
MP))
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s->stats.underrun_count++;
>> + =A0 =A0 =A0 if (psc_dma->playback.active && (isr & MPC52xx_PSC_IMR_TXE=
MP))
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_dma->stats.underrun_count++;
>>
>> =A0 =A0 =A0 =A0/* Capture overrun error */
>> - =A0 =A0 =A0 if (psc_i2s->capture.active && (isr & MPC52xx_PSC_IMR_ORER=
R))
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s->stats.overrun_count++;
>> + =A0 =A0 =A0 if (psc_dma->capture.active && (isr & MPC52xx_PSC_IMR_ORER=
R))
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_dma->stats.overrun_count++;
>>
>> =A0 =A0 =A0 =A0out_8(&regs->command, 4 << 4); =A0/* reset the error stat=
us */
>>
>> @@ -56,7 +56,7 @@ static irqreturn_t psc_i2s_status_irq(int irq, void *_=
psc_i2s)
>> =A0}
>>
>> =A0/**
>> - * psc_i2s_bcom_enqueue_next_buffer - Enqueue another audio buffer
>> + * psc_dma_bcom_enqueue_next_buffer - Enqueue another audio buffer
>> =A0* @s: pointer to stream private data structure
>> =A0*
>> =A0* Enqueues another audio period buffer into the bestcomm queue.
>> @@ -65,7 +65,7 @@ static irqreturn_t psc_i2s_status_irq(int irq, void *_=
psc_i2s)
>> =A0* the queue. =A0Otherwise the enqueue will fail and the audio ring bu=
ffer
>> =A0* will get out of sync
>> =A0*/
>> -static void psc_i2s_bcom_enqueue_next_buffer(struct psc_i2s_stream *s)
>> +static void psc_dma_bcom_enqueue_next_buffer(struct psc_dma_stream *s)
>> =A0{
>> =A0 =A0 =A0 =A0struct bcom_bd *bd;
>>
>> @@ -82,9 +82,9 @@ static void psc_i2s_bcom_enqueue_next_buffer(struct ps=
c_i2s_stream *s)
>> =A0}
>>
>> =A0/* Bestcomm DMA irq handler */
>> -static irqreturn_t psc_i2s_bcom_irq(int irq, void *_psc_i2s_stream)
>> +static irqreturn_t psc_dma_bcom_irq(int irq, void *_psc_dma_stream)
>> =A0{
>> - =A0 =A0 =A0 struct psc_i2s_stream *s =3D _psc_i2s_stream;
>> + =A0 =A0 =A0 struct psc_dma_stream *s =3D _psc_dma_stream;
>>
>> =A0 =A0 =A0 =A0/* For each finished period, dequeue the completed period=
 buffer
>> =A0 =A0 =A0 =A0 * and enqueue a new one in it's place. */
>> @@ -93,7 +93,7 @@ static irqreturn_t psc_i2s_bcom_irq(int irq, void *_ps=
c_i2s_stream)
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0s->period_current_pt +=3D s->period_bytes=
;
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0if (s->period_current_pt >=3D s->period_e=
nd)
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0s->period_current_pt =3D =
s->period_start;
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s_bcom_enqueue_next_buffer(s);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_dma_bcom_enqueue_next_buffer(s);
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0bcom_enable(s->bcom_task);
>> =A0 =A0 =A0 =A0}
>>
>> @@ -106,39 +106,39 @@ static irqreturn_t psc_i2s_bcom_irq(int irq, void =
*_psc_i2s_stream)
>> =A0}
>>
>> =A0/**
>> - * psc_i2s_startup: create a new substream
>> + * psc_dma_startup: create a new substream
>> =A0*
>> =A0* This is the first function called when a stream is opened.
>> =A0*
>> =A0* If this is the first stream open, then grab the IRQ and program mos=
t of
>> =A0* the PSC registers.
>> =A0*/
>> -int psc_i2s_startup(struct snd_pcm_substream *substream,
>> +int psc_dma_startup(struct snd_pcm_substream *substream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *=
dai)
>> =A0{
>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_da=
ta;
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_dat=
a;
>> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D rtd->dai->cpu_dai->private_dat=
a;
>> =A0 =A0 =A0 =A0int rc;
>>
>> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_startup(substream=3D%p)\n",=
 substream);
>> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "psc_dma_startup(substream=3D%p)\n",=
 substream);
>>
>> - =A0 =A0 =A0 if (!psc_i2s->playback.active &&
>> - =A0 =A0 =A0 =A0 =A0 !psc_i2s->capture.active) {
>> + =A0 =A0 =A0 if (!psc_dma->playback.active &&
>> + =A0 =A0 =A0 =A0 =A0 !psc_dma->capture.active) {
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0/* Setup the IRQs */
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc =3D request_irq(psc_i2s->irq, &psc_i2s_=
status_irq, IRQF_SHARED,
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0"psc-i2=
s-status", psc_i2s);
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc |=3D request_irq(psc_i2s->capture.irq,
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 &psc_i=
2s_bcom_irq, IRQF_SHARED,
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 "psc-i=
2s-capture", &psc_i2s->capture);
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc |=3D request_irq(psc_i2s->playback.irq,
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 &psc_i=
2s_bcom_irq, IRQF_SHARED,
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 "psc-i=
2s-playback", &psc_i2s->playback);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc =3D request_irq(psc_dma->irq, &psc_dma_=
status_irq, IRQF_SHARED,
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0"psc-dm=
a-status", psc_dma);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc |=3D request_irq(psc_dma->capture.irq,
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 &psc_d=
ma_bcom_irq, IRQF_SHARED,
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 "psc-d=
ma-capture", &psc_dma->capture);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 rc |=3D request_irq(psc_dma->playback.irq,
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 &psc_d=
ma_bcom_irq, IRQF_SHARED,
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 "psc-d=
ma-playback", &psc_dma->playback);
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0if (rc) {
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->irq, psc=
_i2s);
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->capture.=
irq,
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0&psc_i2=
s->capture);
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->playback=
.irq,
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0&psc_i2=
s->playback);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_dma->irq, psc=
_dma);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_dma->capture.=
irq,
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0&psc_dm=
a->capture);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_dma->playback=
.irq,
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0&psc_dm=
a->playback);
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return -ENODEV;
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0}
>> =A0 =A0 =A0 =A0}
>> @@ -146,7 +146,7 @@ int psc_i2s_startup(struct snd_pcm_substream *substr=
eam,
>> =A0 =A0 =A0 =A0return 0;
>> =A0}
>>
>> -int psc_i2s_hw_free(struct snd_pcm_substream *substream,
>> +int psc_dma_hw_free(struct snd_pcm_substream *substream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *=
dai)
>> =A0{
>> =A0 =A0 =A0 =A0snd_pcm_set_runtime_buffer(substream, NULL);
>> @@ -154,29 +154,29 @@ int psc_i2s_hw_free(struct snd_pcm_substream *subs=
tream,
>> =A0}
>>
>> =A0/**
>> - * psc_i2s_trigger: start and stop the DMA transfer.
>> + * psc_dma_trigger: start and stop the DMA transfer.
>> =A0*
>> =A0* This function is called by ALSA to start, stop, pause, and resume t=
he DMA
>> =A0* transfer of data.
>> =A0*/
>> -int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
>> +int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *=
dai)
>> =A0{
>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_da=
ta;
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_dat=
a;
>> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D rtd->dai->cpu_dai->private_dat=
a;
>> =A0 =A0 =A0 =A0struct snd_pcm_runtime *runtime =3D substream->runtime;
>> - =A0 =A0 =A0 struct psc_i2s_stream *s;
>> - =A0 =A0 =A0 struct mpc52xx_psc __iomem *regs =3D psc_i2s->psc_regs;
>> + =A0 =A0 =A0 struct psc_dma_stream *s;
>> + =A0 =A0 =A0 struct mpc52xx_psc __iomem *regs =3D psc_dma->psc_regs;
>> =A0 =A0 =A0 =A0u16 imr;
>> =A0 =A0 =A0 =A0u8 psc_cmd;
>> =A0 =A0 =A0 =A0unsigned long flags;
>>
>> =A0 =A0 =A0 =A0if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTU=
RE)
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->capture;
>> =A0 =A0 =A0 =A0else
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->playback;
>>
>> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_trigger(substream=3D%p, cmd=
=3D%i)"
>> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "psc_dma_trigger(substream=3D%p, cmd=
=3D%i)"
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0" stream_id=3D%i\n",
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0substream, cmd, substream->pstr->stream);
>>
>> @@ -207,14 +207,14 @@ int psc_i2s_trigger(struct snd_pcm_substream *subs=
tream, int cmd,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0else
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0bcom_gen_bd_tx_reset(s->b=
com_task);
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0while (!bcom_queue_full(s->bcom_task))
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s_bcom_enqueue_next_=
buffer(s);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_dma_bcom_enqueue_next_=
buffer(s);
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0bcom_enable(s->bcom_task);
>>
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Due to errata in the i2s mode; need to =
line up enabling
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 /* Due to errata in the dma mode; need to =
line up enabling
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 * the transmitter with a transition on t=
he frame sync
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 * line */
>>
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 spin_lock_irqsave(&psc_i2s->lock, flags);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 spin_lock_irqsave(&psc_dma->lock, flags);
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0/* first make sure it is low */
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0while ((in_8(&regs->ipcr_acr.ipcr) & 0x80=
) !=3D 0)
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0;
>> @@ -228,7 +228,7 @@ int psc_i2s_trigger(struct snd_pcm_substream *substr=
eam, int cmd,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0if (substream->pstr->stream =3D=3D SNDRV_=
PCM_STREAM_PLAYBACK)
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0psc_cmd |=3D MPC52xx_PSC_=
TX_ENABLE;
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0out_8(&regs->command, psc_cmd);
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 spin_unlock_irqrestore(&psc_i2s->lock, fla=
gs);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 spin_unlock_irqrestore(&psc_dma->lock, fla=
gs);
>>
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0break;
>>
>> @@ -236,7 +236,7 @@ int psc_i2s_trigger(struct snd_pcm_substream *substr=
eam, int cmd,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0/* Turn off the PSC */
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0s->active =3D 0;
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0if (substream->pstr->stream =3D=3D SNDRV_=
PCM_STREAM_CAPTURE) {
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!psc_i2s->playback.act=
ive) {
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!psc_dma->playback.act=
ive) {
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0out_8(&re=
gs->command, 2 << 4); =A0/* reset rx */
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0out_8(&re=
gs->command, 3 << 4); =A0/* reset tx */
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0out_8(&re=
gs->command, 4 << 4); =A0/* reset err */
>> @@ -244,7 +244,7 @@ int psc_i2s_trigger(struct snd_pcm_substream *substr=
eam, int cmd,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0} else {
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0out_8(&regs->command, 3 <=
< 4); =A0/* reset tx */
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0out_8(&regs->command, 4 <=
< 4); =A0/* reset err */
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!psc_i2s->capture.acti=
ve)
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 if (!psc_dma->capture.acti=
ve)
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0out_8(&re=
gs->command, 2 << 4); =A0/* reset rx */
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0}
>>
>> @@ -255,15 +255,15 @@ int psc_i2s_trigger(struct snd_pcm_substream *subs=
tream, int cmd,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0break;
>>
>> =A0 =A0 =A0 =A0default:
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "invalid command\n")=
;
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 dev_dbg(psc_dma->dev, "invalid command\n")=
;
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return -EINVAL;
>> =A0 =A0 =A0 =A0}
>>
>> =A0 =A0 =A0 =A0/* Update interrupt enable settings */
>> =A0 =A0 =A0 =A0imr =3D 0;
>> - =A0 =A0 =A0 if (psc_i2s->playback.active)
>> + =A0 =A0 =A0 if (psc_dma->playback.active)
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0imr |=3D MPC52xx_PSC_IMR_TXEMP;
>> - =A0 =A0 =A0 if (psc_i2s->capture.active)
>> + =A0 =A0 =A0 if (psc_dma->capture.active)
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0imr |=3D MPC52xx_PSC_IMR_ORERR;
>> =A0 =A0 =A0 =A0out_be16(&regs->isr_imr.imr, imr);
>>
>> @@ -271,36 +271,36 @@ int psc_i2s_trigger(struct snd_pcm_substream *subs=
tream, int cmd,
>> =A0}
>>
>> =A0/**
>> - * psc_i2s_shutdown: shutdown the data transfer on a stream
>> + * psc_dma_shutdown: shutdown the data transfer on a stream
>> =A0*
>> =A0* Shutdown the PSC if there are no other substreams open.
>> =A0*/
>> -void psc_i2s_shutdown(struct snd_pcm_substream *substream,
>> +void psc_dma_shutdown(struct snd_pcm_substream *substream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_d=
ai *dai)
>> =A0{
>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_da=
ta;
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_dat=
a;
>> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D rtd->dai->cpu_dai->private_dat=
a;
>>
>> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_shutdown(substream=3D%p)\n"=
, substream);
>> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "psc_dma_shutdown(substream=3D%p)\n"=
, substream);
>>
>> =A0 =A0 =A0 =A0/*
>> =A0 =A0 =A0 =A0 * If this is the last active substream, disable the PSC =
and release
>> =A0 =A0 =A0 =A0 * the IRQ.
>> =A0 =A0 =A0 =A0 */
>> - =A0 =A0 =A0 if (!psc_i2s->playback.active &&
>> - =A0 =A0 =A0 =A0 =A0 !psc_i2s->capture.active) {
>> + =A0 =A0 =A0 if (!psc_dma->playback.active &&
>> + =A0 =A0 =A0 =A0 =A0 !psc_dma->capture.active) {
>>
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0/* Disable all interrupts and reset the P=
SC */
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_be16(&psc_i2s->psc_regs->isr_imr.imr, =
0);
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 3 << 4)=
; /* reset tx */
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 2 << 4)=
; /* reset rx */
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 1 << 4)=
; /* reset mode */
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 4 << 4)=
; /* reset error */
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_be16(&psc_dma->psc_regs->isr_imr.imr, =
0);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 3 << 4)=
; /* reset tx */
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 2 << 4)=
; /* reset rx */
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 1 << 4)=
; /* reset mode */
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 4 << 4)=
; /* reset error */
>>
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0/* Release irqs */
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->irq, psc_i2s);
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->capture.irq, &psc_i2s->c=
apture);
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_i2s->playback.irq, &psc_i2s->=
playback);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_dma->irq, psc_dma);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_dma->capture.irq, &psc_dma->c=
apture);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 free_irq(psc_dma->playback.irq, &psc_dma->=
playback);
>> =A0 =A0 =A0 =A0}
>> =A0}
>>
>> @@ -312,7 +312,7 @@ void psc_i2s_shutdown(struct snd_pcm_substream *subs=
tream,
>> =A0* interaction with the attached codec
>> =A0*/
>>
>> -static const struct snd_pcm_hardware psc_i2s_pcm_hardware =3D {
>> +static const struct snd_pcm_hardware psc_dma_pcm_hardware =3D {
>> =A0 =A0 =A0 =A0.info =3D SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID=
 |
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0SNDRV_PCM_INFO_INTERLEAVED | SNDRV_PCM_IN=
FO_BLOCK_TRANSFER,
>> =A0 =A0 =A0 =A0.formats =3D SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_B=
E |
>> @@ -329,80 +329,80 @@ static const struct snd_pcm_hardware psc_i2s_pcm_h=
ardware =3D {
>> =A0 =A0 =A0 =A0.fifo_size =A0 =A0 =A0 =A0 =A0 =A0 =A0=3D 0,
>> =A0};
>>
>> -static int psc_i2s_pcm_open(struct snd_pcm_substream *substream)
>> +static int psc_dma_pcm_open(struct snd_pcm_substream *substream)
>> =A0{
>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_da=
ta;
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_dat=
a;
>> - =A0 =A0 =A0 struct psc_i2s_stream *s;
>> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D rtd->dai->cpu_dai->private_dat=
a;
>> + =A0 =A0 =A0 struct psc_dma_stream *s;
>>
>> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_pcm_open(substream=3D%p)\n"=
, substream);
>> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "psc_dma_pcm_open(substream=3D%p)\n"=
, substream);
>>
>> =A0 =A0 =A0 =A0if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTU=
RE)
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->capture;
>> =A0 =A0 =A0 =A0else
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->playback;
>>
>> - =A0 =A0 =A0 snd_soc_set_runtime_hwparams(substream, &psc_i2s_pcm_hardw=
are);
>> + =A0 =A0 =A0 snd_soc_set_runtime_hwparams(substream, &psc_dma_pcm_hardw=
are);
>>
>> =A0 =A0 =A0 =A0s->stream =3D substream;
>> =A0 =A0 =A0 =A0return 0;
>> =A0}
>>
>> -static int psc_i2s_pcm_close(struct snd_pcm_substream *substream)
>> +static int psc_dma_pcm_close(struct snd_pcm_substream *substream)
>> =A0{
>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_da=
ta;
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_dat=
a;
>> - =A0 =A0 =A0 struct psc_i2s_stream *s;
>> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D rtd->dai->cpu_dai->private_dat=
a;
>> + =A0 =A0 =A0 struct psc_dma_stream *s;
>>
>> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_pcm_close(substream=3D%p)\n=
", substream);
>> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "psc_dma_pcm_close(substream=3D%p)\n=
", substream);
>>
>> =A0 =A0 =A0 =A0if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTU=
RE)
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->capture;
>> =A0 =A0 =A0 =A0else
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->playback;
>>
>> =A0 =A0 =A0 =A0s->stream =3D NULL;
>> =A0 =A0 =A0 =A0return 0;
>> =A0}
>>
>> =A0static snd_pcm_uframes_t
>> -psc_i2s_pcm_pointer(struct snd_pcm_substream *substream)
>> +psc_dma_pcm_pointer(struct snd_pcm_substream *substream)
>> =A0{
>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_da=
ta;
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_dat=
a;
>> - =A0 =A0 =A0 struct psc_i2s_stream *s;
>> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D rtd->dai->cpu_dai->private_dat=
a;
>> + =A0 =A0 =A0 struct psc_dma_stream *s;
>> =A0 =A0 =A0 =A0dma_addr_t count;
>>
>> =A0 =A0 =A0 =A0if (substream->pstr->stream =3D=3D SNDRV_PCM_STREAM_CAPTU=
RE)
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->capture;
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->capture;
>> =A0 =A0 =A0 =A0else
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_i2s->playback;
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 s =3D &psc_dma->playback;
>>
>> =A0 =A0 =A0 =A0count =3D s->period_current_pt - s->period_start;
>>
>> =A0 =A0 =A0 =A0return bytes_to_frames(substream->runtime, count);
>> =A0}
>>
>> -static struct snd_pcm_ops psc_i2s_pcm_ops =3D {
>> - =A0 =A0 =A0 .open =A0 =A0 =A0 =A0 =A0 =3D psc_i2s_pcm_open,
>> - =A0 =A0 =A0 .close =A0 =A0 =A0 =A0 =A0=3D psc_i2s_pcm_close,
>> +static struct snd_pcm_ops psc_dma_pcm_ops =3D {
>> + =A0 =A0 =A0 .open =A0 =A0 =A0 =A0 =A0 =3D psc_dma_pcm_open,
>> + =A0 =A0 =A0 .close =A0 =A0 =A0 =A0 =A0=3D psc_dma_pcm_close,
>> =A0 =A0 =A0 =A0.ioctl =A0 =A0 =A0 =A0 =A0=3D snd_pcm_lib_ioctl,
>> - =A0 =A0 =A0 .pointer =A0 =A0 =A0 =A0=3D psc_i2s_pcm_pointer,
>> + =A0 =A0 =A0 .pointer =A0 =A0 =A0 =A0=3D psc_dma_pcm_pointer,
>> =A0};
>>
>> -static u64 psc_i2s_pcm_dmamask =3D 0xffffffff;
>> -static int psc_i2s_pcm_new(struct snd_card *card, struct snd_soc_dai *d=
ai,
>> +static u64 psc_dma_pcm_dmamask =3D 0xffffffff;
>> +static int psc_dma_pcm_new(struct snd_card *card, struct snd_soc_dai *d=
ai,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_pcm *pcm)
>> =A0{
>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D pcm->private_data;
>> - =A0 =A0 =A0 size_t size =3D psc_i2s_pcm_hardware.buffer_bytes_max;
>> + =A0 =A0 =A0 size_t size =3D psc_dma_pcm_hardware.buffer_bytes_max;
>> =A0 =A0 =A0 =A0int rc =3D 0;
>>
>> - =A0 =A0 =A0 dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_new(card=3D%p, dai=
=3D%p, pcm=3D%p)\n",
>> + =A0 =A0 =A0 dev_dbg(rtd->socdev->dev, "psc_dma_pcm_new(card=3D%p, dai=
=3D%p, pcm=3D%p)\n",
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0card, dai, pcm);
>>
>> =A0 =A0 =A0 =A0if (!card->dev->dma_mask)
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 card->dev->dma_mask =3D &psc_i2s_pcm_dmama=
sk;
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 card->dev->dma_mask =3D &psc_dma_pcm_dmama=
sk;
>> =A0 =A0 =A0 =A0if (!card->dev->coherent_dma_mask)
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0card->dev->coherent_dma_mask =3D 0xffffff=
ff;
>>
>> @@ -430,13 +430,13 @@ static int psc_i2s_pcm_new(struct snd_card *card, =
struct snd_soc_dai *dai,
>> =A0 =A0 =A0 =A0return -ENOMEM;
>> =A0}
>>
>> -static void psc_i2s_pcm_free(struct snd_pcm *pcm)
>> +static void psc_dma_pcm_free(struct snd_pcm *pcm)
>> =A0{
>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D pcm->private_data;
>> =A0 =A0 =A0 =A0struct snd_pcm_substream *substream;
>> =A0 =A0 =A0 =A0int stream;
>>
>> - =A0 =A0 =A0 dev_dbg(rtd->socdev->dev, "psc_i2s_pcm_free(pcm=3D%p)\n", =
pcm);
>> + =A0 =A0 =A0 dev_dbg(rtd->socdev->dev, "psc_dma_pcm_free(pcm=3D%p)\n", =
pcm);
>>
>> =A0 =A0 =A0 =A0for (stream =3D 0; stream < 2; stream++) {
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0substream =3D pcm->streams[stream].substr=
eam;
>> @@ -448,10 +448,10 @@ static void psc_i2s_pcm_free(struct snd_pcm *pcm)
>> =A0 =A0 =A0 =A0}
>> =A0}
>>
>> -struct snd_soc_platform psc_i2s_pcm_soc_platform =3D {
>> +struct snd_soc_platform psc_dma_pcm_soc_platform =3D {
>> =A0 =A0 =A0 =A0.name =A0 =A0 =A0 =A0 =A0 =3D "mpc5200-psc-audio",
>> - =A0 =A0 =A0 .pcm_ops =A0 =A0 =A0 =A0=3D &psc_i2s_pcm_ops,
>> - =A0 =A0 =A0 .pcm_new =A0 =A0 =A0 =A0=3D &psc_i2s_pcm_new,
>> - =A0 =A0 =A0 .pcm_free =A0 =A0 =A0 =3D &psc_i2s_pcm_free,
>> + =A0 =A0 =A0 .pcm_ops =A0 =A0 =A0 =A0=3D &psc_dma_pcm_ops,
>> + =A0 =A0 =A0 .pcm_new =A0 =A0 =A0 =A0=3D &psc_dma_pcm_new,
>> + =A0 =A0 =A0 .pcm_free =A0 =A0 =A0 =3D &psc_dma_pcm_free,
>> =A0};
>>
>> diff --git a/sound/soc/fsl/mpc5200_dma.h b/sound/soc/fsl/mpc5200_dma.h
>> index 9a19e8a..a33232c 100644
>> --- a/sound/soc/fsl/mpc5200_dma.h
>> +++ b/sound/soc/fsl/mpc5200_dma.h
>> @@ -6,9 +6,9 @@
>> =A0#define __SOUND_SOC_FSL_MPC5200_DMA_H__
>>
>> =A0/**
>> - * psc_i2s_stream - Data specific to a single stream (playback or captu=
re)
>> + * psc_dma_stream - Data specific to a single stream (playback or captu=
re)
>> =A0* @active: =A0 =A0 =A0 =A0 =A0 =A0flag indicating if the stream is ac=
tive
>> - * @psc_i2s: =A0 =A0 =A0 =A0 =A0 pointer back to parent psc_i2s data st=
ructure
>> + * @psc_dma: =A0 =A0 =A0 =A0 =A0 pointer back to parent psc_dma data st=
ructure
>> =A0* @bcom_task: =A0 =A0 =A0 =A0 bestcomm task structure
>> =A0* @irq: =A0 =A0 =A0 =A0 =A0 =A0 =A0 irq number for bestcomm task
>> =A0* @period_start: =A0 =A0 =A0physical address of start of DMA region
>> @@ -16,9 +16,9 @@
>> =A0* @period_next_pt: =A0 =A0physical address of next DMA buffer to enqu=
eue
>> =A0* @period_bytes: =A0 =A0 =A0size of DMA period in bytes
>> =A0*/
>> -struct psc_i2s_stream {
>> +struct psc_dma_stream {
>> =A0 =A0 =A0 =A0int active;
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s;
>> + =A0 =A0 =A0 struct psc_dma *psc_dma;
>> =A0 =A0 =A0 =A0struct bcom_task *bcom_task;
>> =A0 =A0 =A0 =A0int irq;
>> =A0 =A0 =A0 =A0struct snd_pcm_substream *stream;
>> @@ -30,7 +30,7 @@ struct psc_i2s_stream {
>> =A0};
>>
>> =A0/**
>> - * psc_i2s - Private driver data
>> + * psc_dma - Private driver data
>> =A0* @name: short name for this device ("PSC0", "PSC1", etc)
>> =A0* @psc_regs: pointer to the PSC's registers
>> =A0* @fifo_regs: pointer to the PSC's FIFO registers
>> @@ -42,7 +42,7 @@ struct psc_i2s_stream {
>> =A0* @playback: Playback stream context data
>> =A0* @capture: Capture stream context data
>> =A0*/
>> -struct psc_i2s {
>> +struct psc_dma {
>> =A0 =A0 =A0 =A0char name[32];
>> =A0 =A0 =A0 =A0struct mpc52xx_psc __iomem *psc_regs;
>> =A0 =A0 =A0 =A0struct mpc52xx_psc_fifo __iomem *fifo_regs;
>> @@ -53,8 +53,8 @@ struct psc_i2s {
>> =A0 =A0 =A0 =A0u32 sicr;
>>
>> =A0 =A0 =A0 =A0/* per-stream data */
>> - =A0 =A0 =A0 struct psc_i2s_stream playback;
>> - =A0 =A0 =A0 struct psc_i2s_stream capture;
>> + =A0 =A0 =A0 struct psc_dma_stream playback;
>> + =A0 =A0 =A0 struct psc_dma_stream capture;
>>
>> =A0 =A0 =A0 =A0/* Statistics */
>> =A0 =A0 =A0 =A0struct {
>> @@ -64,18 +64,18 @@ struct psc_i2s {
>> =A0};
>>
>>
>> -int psc_i2s_startup(struct snd_pcm_substream *substream,
>> +int psc_dma_startup(struct snd_pcm_substream *substream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *=
dai);
>>
>> -int psc_i2s_hw_free(struct snd_pcm_substream *substream,
>> +int psc_dma_hw_free(struct snd_pcm_substream *substream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *=
dai);
>>
>> -void psc_i2s_shutdown(struct snd_pcm_substream *substream,
>> +void psc_dma_shutdown(struct snd_pcm_substream *substream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_d=
ai *dai);
>>
>> -int psc_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
>> +int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai *=
dai);
>>
>> -extern struct snd_soc_platform psc_i2s_pcm_soc_platform;
>> +extern struct snd_soc_platform psc_dma_pcm_soc_platform;
>>
>> =A0#endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */
>> diff --git a/sound/soc/fsl/mpc5200_psc_i2s.c b/sound/soc/fsl/mpc5200_psc=
_i2s.c
>> index 8974b53..12a7917 100644
>> --- a/sound/soc/fsl/mpc5200_psc_i2s.c
>> +++ b/sound/soc/fsl/mpc5200_psc_i2s.c
>> @@ -54,10 +54,10 @@ static int psc_i2s_hw_params(struct snd_pcm_substrea=
m *substream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct s=
nd_soc_dai *dai)
>> =A0{
>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_da=
ta;
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D rtd->dai->cpu_dai->private_dat=
a;
>> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D rtd->dai->cpu_dai->private_dat=
a;
>> =A0 =A0 =A0 =A0u32 mode;
>>
>> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "%s(substream=3D%p) p_size=3D%i p_by=
tes=3D%i"
>> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "%s(substream=3D%p) p_size=3D%i p_by=
tes=3D%i"
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0" periods=3D%i buffer_size=3D%i =A0buffer=
_bytes=3D%i\n",
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0__func__, substream, params_period_size(p=
arams),
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0params_period_bytes(params), params_perio=
ds(params),
>> @@ -77,10 +77,10 @@ static int psc_i2s_hw_params(struct snd_pcm_substrea=
m *substream,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0mode =3D MPC52xx_PSC_SICR_SIM_CODEC_32;
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0break;
>> =A0 =A0 =A0 =A0default:
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "invalid format\n");
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 dev_dbg(psc_dma->dev, "invalid format\n");
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return -EINVAL;
>> =A0 =A0 =A0 =A0}
>> - =A0 =A0 =A0 out_be32(&psc_i2s->psc_regs->sicr, psc_i2s->sicr | mode);
>> + =A0 =A0 =A0 out_be32(&psc_dma->psc_regs->sicr, psc_dma->sicr | mode);
>>
>> =A0 =A0 =A0 =A0snd_pcm_set_runtime_buffer(substream, &substream->dma_buf=
fer);
>>
>> @@ -104,8 +104,8 @@ static int psc_i2s_hw_params(struct snd_pcm_substrea=
m *substream,
>> =A0static int psc_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0int clk_id, u=
nsigned int freq, int dir)
>> =A0{
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D cpu_dai->private_data;
>> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_set_sysclk(cpu_dai=3D%p, di=
r=3D%i)\n",
>> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D cpu_dai->private_data;
>> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "psc_i2s_set_sysclk(cpu_dai=3D%p, di=
r=3D%i)\n",
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0cpu_dai, =
dir);
>> =A0 =A0 =A0 =A0return (dir =3D=3D SND_SOC_CLOCK_IN) ? 0 : -EINVAL;
>> =A0}
>> @@ -123,8 +123,8 @@ static int psc_i2s_set_sysclk(struct snd_soc_dai *cp=
u_dai,
>> =A0*/
>> =A0static int psc_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int =
format)
>> =A0{
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D cpu_dai->private_data;
>> - =A0 =A0 =A0 dev_dbg(psc_i2s->dev, "psc_i2s_set_fmt(cpu_dai=3D%p, forma=
t=3D%i)\n",
>> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D cpu_dai->private_data;
>> + =A0 =A0 =A0 dev_dbg(psc_dma->dev, "psc_i2s_set_fmt(cpu_dai=3D%p, forma=
t=3D%i)\n",
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0cpu_dai, =
format);
>> =A0 =A0 =A0 =A0return (format =3D=3D SND_SOC_DAIFMT_I2S) ? 0 : -EINVAL;
>> =A0}
>> @@ -140,11 +140,11 @@ static int psc_i2s_set_fmt(struct snd_soc_dai *cpu=
_dai, unsigned int format)
>> =A0* psc_i2s_dai_template: template CPU Digital Audio Interface
>> =A0*/
>> =A0static struct snd_soc_dai_ops psc_i2s_dai_ops =3D {
>> - =A0 =A0 =A0 .startup =A0 =A0 =A0 =A0=3D psc_i2s_startup,
>> + =A0 =A0 =A0 .startup =A0 =A0 =A0 =A0=3D psc_dma_startup,
>> =A0 =A0 =A0 =A0.hw_params =A0 =A0 =A0=3D psc_i2s_hw_params,
>> - =A0 =A0 =A0 .hw_free =A0 =A0 =A0 =A0=3D psc_i2s_hw_free,
>> - =A0 =A0 =A0 .shutdown =A0 =A0 =A0 =3D psc_i2s_shutdown,
>> - =A0 =A0 =A0 .trigger =A0 =A0 =A0 =A0=3D psc_i2s_trigger,
>> + =A0 =A0 =A0 .hw_free =A0 =A0 =A0 =A0=3D psc_dma_hw_free,
>> + =A0 =A0 =A0 .shutdown =A0 =A0 =A0 =3D psc_dma_shutdown,
>> + =A0 =A0 =A0 .trigger =A0 =A0 =A0 =A0=3D psc_dma_trigger,
>> =A0 =A0 =A0 =A0.set_sysclk =A0 =A0 =3D psc_i2s_set_sysclk,
>> =A0 =A0 =A0 =A0.set_fmt =A0 =A0 =A0 =A0=3D psc_i2s_set_fmt,
>> =A0};
>> @@ -172,24 +172,24 @@ static struct snd_soc_dai psc_i2s_dai_template =3D=
 {
>> =A0static ssize_t psc_i2s_status_show(struct device *dev,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct device_attrib=
ute *attr, char *buf)
>> =A0{
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D dev_get_drvdata(dev);
>> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D dev_get_drvdata(dev);
>>
>> =A0 =A0 =A0 =A0return sprintf(buf, "status=3D%.4x sicr=3D%.8x rfnum=3D%i=
 rfstat=3D0x%.4x "
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0"tfnum=3D%i tfstat=3D0x%.=
4x\n",
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_i2s->psc_regs=
->sr_csr.status),
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be32(&psc_i2s->psc_regs=
->sicr),
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_i2s->fifo_reg=
s->rfnum) & 0x1ff,
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_i2s->fifo_reg=
s->rfstat),
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_i2s->fifo_reg=
s->tfnum) & 0x1ff,
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_i2s->fifo_reg=
s->tfstat));
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_dma->psc_regs=
->sr_csr.status),
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be32(&psc_dma->psc_regs=
->sicr),
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_dma->fifo_reg=
s->rfnum) & 0x1ff,
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_dma->fifo_reg=
s->rfstat),
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_dma->fifo_reg=
s->tfnum) & 0x1ff,
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 in_be16(&psc_dma->fifo_reg=
s->tfstat));
>> =A0}
>>
>> -static int *psc_i2s_get_stat_attr(struct psc_i2s *psc_i2s, const char *=
name)
>> +static int *psc_i2s_get_stat_attr(struct psc_dma *psc_dma, const char *=
name)
>> =A0{
>> =A0 =A0 =A0 =A0if (strcmp(name, "playback_underrun") =3D=3D 0)
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 return &psc_i2s->stats.underrun_count;
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 return &psc_dma->stats.underrun_count;
>> =A0 =A0 =A0 =A0if (strcmp(name, "capture_overrun") =3D=3D 0)
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 return &psc_i2s->stats.overrun_count;
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 return &psc_dma->stats.overrun_count;
>>
>> =A0 =A0 =A0 =A0return NULL;
>> =A0}
>> @@ -197,10 +197,10 @@ static int *psc_i2s_get_stat_attr(struct psc_i2s *=
psc_i2s, const char *name)
>> =A0static ssize_t psc_i2s_stat_show(struct device *dev,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct d=
evice_attribute *attr, char *buf)
>> =A0{
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D dev_get_drvdata(dev);
>> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D dev_get_drvdata(dev);
>> =A0 =A0 =A0 =A0int *attrib;
>>
>> - =A0 =A0 =A0 attrib =3D psc_i2s_get_stat_attr(psc_i2s, attr->attr.name)=
;
>> + =A0 =A0 =A0 attrib =3D psc_i2s_get_stat_attr(psc_dma, attr->attr.name)=
;
>> =A0 =A0 =A0 =A0if (!attrib)
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return 0;
>>
>> @@ -212,10 +212,10 @@ static ssize_t psc_i2s_stat_store(struct device *d=
ev,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0const=
 char *buf,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0size_=
t count)
>> =A0{
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D dev_get_drvdata(dev);
>> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D dev_get_drvdata(dev);
>> =A0 =A0 =A0 =A0int *attrib;
>>
>> - =A0 =A0 =A0 attrib =3D psc_i2s_get_stat_attr(psc_i2s, attr->attr.name)=
;
>> + =A0 =A0 =A0 attrib =3D psc_i2s_get_stat_attr(psc_dma, attr->attr.name)=
;
>> =A0 =A0 =A0 =A0if (!attrib)
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return 0;
>>
>> @@ -238,7 +238,7 @@ static int __devinit psc_i2s_of_probe(struct of_devi=
ce *op,
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0const struct of_device_id *match)
>> =A0{
>> =A0 =A0 =A0 =A0phys_addr_t fifo;
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s;
>> + =A0 =A0 =A0 struct psc_dma *psc_dma;
>> =A0 =A0 =A0 =A0struct resource res;
>> =A0 =A0 =A0 =A0int size, psc_id, irq, rc;
>> =A0 =A0 =A0 =A0const __be32 *prop;
>> @@ -265,56 +265,56 @@ static int __devinit psc_i2s_of_probe(struct of_de=
vice *op,
>> =A0 =A0 =A0 =A0}
>>
>> =A0 =A0 =A0 =A0/* Allocate and initialize the driver private data */
>> - =A0 =A0 =A0 psc_i2s =3D kzalloc(sizeof *psc_i2s, GFP_KERNEL);
>> - =A0 =A0 =A0 if (!psc_i2s) {
>> + =A0 =A0 =A0 psc_dma =3D kzalloc(sizeof *psc_dma, GFP_KERNEL);
>> + =A0 =A0 =A0 if (!psc_dma) {
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0iounmap(regs);
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return -ENOMEM;
>> =A0 =A0 =A0 =A0}
>> - =A0 =A0 =A0 spin_lock_init(&psc_i2s->lock);
>> - =A0 =A0 =A0 psc_i2s->irq =3D irq;
>> - =A0 =A0 =A0 psc_i2s->psc_regs =3D regs;
>> - =A0 =A0 =A0 psc_i2s->fifo_regs =3D regs + sizeof *psc_i2s->psc_regs;
>> - =A0 =A0 =A0 psc_i2s->dev =3D &op->dev;
>> - =A0 =A0 =A0 psc_i2s->playback.psc_i2s =3D psc_i2s;
>> - =A0 =A0 =A0 psc_i2s->capture.psc_i2s =3D psc_i2s;
>> - =A0 =A0 =A0 snprintf(psc_i2s->name, sizeof psc_i2s->name, "PSC%u", psc=
_id+1);
>> + =A0 =A0 =A0 spin_lock_init(&psc_dma->lock);
>> + =A0 =A0 =A0 psc_dma->irq =3D irq;
>> + =A0 =A0 =A0 psc_dma->psc_regs =3D regs;
>> + =A0 =A0 =A0 psc_dma->fifo_regs =3D regs + sizeof *psc_dma->psc_regs;
>> + =A0 =A0 =A0 psc_dma->dev =3D &op->dev;
>> + =A0 =A0 =A0 psc_dma->playback.psc_dma =3D psc_dma;
>> + =A0 =A0 =A0 psc_dma->capture.psc_dma =3D psc_dma;
>> + =A0 =A0 =A0 snprintf(psc_dma->name, sizeof psc_dma->name, "PSC%u", psc=
_id+1);
>>
>> =A0 =A0 =A0 =A0/* Fill out the CPU DAI structure */
>> - =A0 =A0 =A0 memcpy(&psc_i2s->dai, &psc_i2s_dai_template, sizeof psc_i2=
s->dai);
>> - =A0 =A0 =A0 psc_i2s->dai.private_data =3D psc_i2s;
>> - =A0 =A0 =A0 psc_i2s->dai.name =3D psc_i2s->name;
>> - =A0 =A0 =A0 psc_i2s->dai.id =3D psc_id;
>> + =A0 =A0 =A0 memcpy(&psc_dma->dai, &psc_i2s_dai_template, sizeof psc_dm=
a->dai);
>> + =A0 =A0 =A0 psc_dma->dai.private_data =3D psc_dma;
>> + =A0 =A0 =A0 psc_dma->dai.name =3D psc_dma->name;
>> + =A0 =A0 =A0 psc_dma->dai.id =3D psc_id;
>>
>> =A0 =A0 =A0 =A0/* Find the address of the fifo data registers and setup =
the
>> =A0 =A0 =A0 =A0 * DMA tasks */
>> =A0 =A0 =A0 =A0fifo =3D res.start + offsetof(struct mpc52xx_psc, buffer.=
buffer_32);
>> - =A0 =A0 =A0 psc_i2s->capture.bcom_task =3D
>> + =A0 =A0 =A0 psc_dma->capture.bcom_task =3D
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0bcom_psc_gen_bd_rx_init(psc_id, 10, fifo,=
 512);
>> - =A0 =A0 =A0 psc_i2s->playback.bcom_task =3D
>> + =A0 =A0 =A0 psc_dma->playback.bcom_task =3D
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0bcom_psc_gen_bd_tx_init(psc_id, 10, fifo)=
;
>> - =A0 =A0 =A0 if (!psc_i2s->capture.bcom_task ||
>> - =A0 =A0 =A0 =A0 =A0 !psc_i2s->playback.bcom_task) {
>> + =A0 =A0 =A0 if (!psc_dma->capture.bcom_task ||
>> + =A0 =A0 =A0 =A0 =A0 !psc_dma->playback.bcom_task) {
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0dev_err(&op->dev, "Could not allocate bes=
tcomm tasks\n");
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0iounmap(regs);
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 kfree(psc_i2s);
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 kfree(psc_dma);
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0return -ENODEV;
>> =A0 =A0 =A0 =A0}
>>
>> =A0 =A0 =A0 =A0/* Disable all interrupts and reset the PSC */
>> - =A0 =A0 =A0 out_be16(&psc_i2s->psc_regs->isr_imr.imr, 0);
>> - =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 3 << 4); /* reset trans=
mitter */
>> - =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 2 << 4); /* reset recei=
ver */
>> - =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 1 << 4); /* reset mode =
*/
>> - =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->command, 4 << 4); /* reset error=
 */
>> + =A0 =A0 =A0 out_be16(&psc_dma->psc_regs->isr_imr.imr, 0);
>> + =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 3 << 4); /* reset trans=
mitter */
>> + =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 2 << 4); /* reset recei=
ver */
>> + =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 1 << 4); /* reset mode =
*/
>> + =A0 =A0 =A0 out_8(&psc_dma->psc_regs->command, 4 << 4); /* reset error=
 */
>>
>> =A0 =A0 =A0 =A0/* Configure the serial interface mode; defaulting to COD=
EC8 mode */
>> - =A0 =A0 =A0 psc_i2s->sicr =3D MPC52xx_PSC_SICR_DTS1 | MPC52xx_PSC_SICR=
_I2S |
>> + =A0 =A0 =A0 psc_dma->sicr =3D MPC52xx_PSC_SICR_DTS1 | MPC52xx_PSC_SICR=
_I2S |
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0MPC52xx_PSC_SICR_CLKPOL;
>> =A0 =A0 =A0 =A0if (of_get_property(op->node, "fsl,cellslave", NULL))
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_i2s->sicr |=3D MPC52xx_PSC_SICR_CELLSL=
AVE |
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 psc_dma->sicr |=3D MPC52xx_PSC_SICR_CELLSL=
AVE |
>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 MPC52xx_=
PSC_SICR_GENCLK;
>> - =A0 =A0 =A0 out_be32(&psc_i2s->psc_regs->sicr,
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0psc_i2s->sicr | MPC52xx_PSC_SICR_SIM_CO=
DEC_8);
>> + =A0 =A0 =A0 out_be32(&psc_dma->psc_regs->sicr,
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0psc_dma->sicr | MPC52xx_PSC_SICR_SIM_CO=
DEC_8);
>>
>> =A0 =A0 =A0 =A0/* Check for the codec handle. =A0If it is not present th=
en we
>> =A0 =A0 =A0 =A0 * are done */
>> @@ -325,54 +325,54 @@ static int __devinit psc_i2s_of_probe(struct of_de=
vice *op,
>> =A0 =A0 =A0 =A0 * First write: RxRdy (FIFO Alarm) generates rx FIFO irq
>> =A0 =A0 =A0 =A0 * Second write: register Normal mode for non loopback
>> =A0 =A0 =A0 =A0 */
>> - =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->mode, 0);
>> - =A0 =A0 =A0 out_8(&psc_i2s->psc_regs->mode, 0);
>> + =A0 =A0 =A0 out_8(&psc_dma->psc_regs->mode, 0);
>> + =A0 =A0 =A0 out_8(&psc_dma->psc_regs->mode, 0);
>>
>> =A0 =A0 =A0 =A0/* Set the TX and RX fifo alarm thresholds */
>> - =A0 =A0 =A0 out_be16(&psc_i2s->fifo_regs->rfalarm, 0x100);
>> - =A0 =A0 =A0 out_8(&psc_i2s->fifo_regs->rfcntl, 0x4);
>> - =A0 =A0 =A0 out_be16(&psc_i2s->fifo_regs->tfalarm, 0x100);
>> - =A0 =A0 =A0 out_8(&psc_i2s->fifo_regs->tfcntl, 0x7);
>> + =A0 =A0 =A0 out_be16(&psc_dma->fifo_regs->rfalarm, 0x100);
>> + =A0 =A0 =A0 out_8(&psc_dma->fifo_regs->rfcntl, 0x4);
>> + =A0 =A0 =A0 out_be16(&psc_dma->fifo_regs->tfalarm, 0x100);
>> + =A0 =A0 =A0 out_8(&psc_dma->fifo_regs->tfcntl, 0x7);
>>
>> =A0 =A0 =A0 =A0/* Lookup the IRQ numbers */
>> - =A0 =A0 =A0 psc_i2s->playback.irq =3D
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_get_task_irq(psc_i2s->playback.bcom_t=
ask);
>> - =A0 =A0 =A0 psc_i2s->capture.irq =3D
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_get_task_irq(psc_i2s->capture.bcom_ta=
sk);
>> + =A0 =A0 =A0 psc_dma->playback.irq =3D
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_get_task_irq(psc_dma->playback.bcom_t=
ask);
>> + =A0 =A0 =A0 psc_dma->capture.irq =3D
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 bcom_get_task_irq(psc_dma->capture.bcom_ta=
sk);
>>
>> =A0 =A0 =A0 =A0/* Save what we've done so it can be found again later */
>> - =A0 =A0 =A0 dev_set_drvdata(&op->dev, psc_i2s);
>> + =A0 =A0 =A0 dev_set_drvdata(&op->dev, psc_dma);
>>
>> =A0 =A0 =A0 =A0/* Register the SYSFS files */
>> - =A0 =A0 =A0 rc =3D device_create_file(psc_i2s->dev, &dev_attr_status);
>> - =A0 =A0 =A0 rc |=3D device_create_file(psc_i2s->dev, &dev_attr_capture=
_overrun);
>> - =A0 =A0 =A0 rc |=3D device_create_file(psc_i2s->dev, &dev_attr_playbac=
k_underrun);
>> + =A0 =A0 =A0 rc =3D device_create_file(psc_dma->dev, &dev_attr_status);
>> + =A0 =A0 =A0 rc |=3D device_create_file(psc_dma->dev, &dev_attr_capture=
_overrun);
>> + =A0 =A0 =A0 rc |=3D device_create_file(psc_dma->dev, &dev_attr_playbac=
k_underrun);
>> =A0 =A0 =A0 =A0if (rc)
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 dev_info(psc_i2s->dev, "error creating sys=
fs files\n");
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 dev_info(psc_dma->dev, "error creating sys=
fs files\n");
>>
>> - =A0 =A0 =A0 snd_soc_register_platform(&psc_i2s_pcm_soc_platform);
>> + =A0 =A0 =A0 snd_soc_register_platform(&psc_dma_pcm_soc_platform);
>>
>> =A0 =A0 =A0 =A0/* Tell the ASoC OF helpers about it */
>> - =A0 =A0 =A0 of_snd_soc_register_platform(&psc_i2s_pcm_soc_platform, op=
->node,
>> - =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0&psc_i2s->dai);
>> + =A0 =A0 =A0 of_snd_soc_register_platform(&psc_dma_pcm_soc_platform, op=
->node,
>> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =
=A0&psc_dma->dai);
>>
>> =A0 =A0 =A0 =A0return 0;
>> =A0}
>>
>> =A0static int __devexit psc_i2s_of_remove(struct of_device *op)
>> =A0{
>> - =A0 =A0 =A0 struct psc_i2s *psc_i2s =3D dev_get_drvdata(&op->dev);
>> + =A0 =A0 =A0 struct psc_dma *psc_dma =3D dev_get_drvdata(&op->dev);
>>
>> =A0 =A0 =A0 =A0dev_dbg(&op->dev, "psc_i2s_remove()\n");
>>
>> - =A0 =A0 =A0 snd_soc_unregister_platform(&psc_i2s_pcm_soc_platform);
>> + =A0 =A0 =A0 snd_soc_unregister_platform(&psc_dma_pcm_soc_platform);
>>
>> - =A0 =A0 =A0 bcom_gen_bd_rx_release(psc_i2s->capture.bcom_task);
>> - =A0 =A0 =A0 bcom_gen_bd_tx_release(psc_i2s->playback.bcom_task);
>> + =A0 =A0 =A0 bcom_gen_bd_rx_release(psc_dma->capture.bcom_task);
>> + =A0 =A0 =A0 bcom_gen_bd_tx_release(psc_dma->playback.bcom_task);
>>
>> - =A0 =A0 =A0 iounmap(psc_i2s->psc_regs);
>> - =A0 =A0 =A0 iounmap(psc_i2s->fifo_regs);
>> - =A0 =A0 =A0 kfree(psc_i2s);
>> + =A0 =A0 =A0 iounmap(psc_dma->psc_regs);
>> + =A0 =A0 =A0 iounmap(psc_dma->fifo_regs);
>> + =A0 =A0 =A0 kfree(psc_dma);
>> =A0 =A0 =A0 =A0dev_set_drvdata(&op->dev, NULL);
>>
>> =A0 =A0 =A0 =A0return 0;
>>
>>
>
>
>
> --
> Grant Likely, B.Sc., P.Eng.
> Secret Lab Technologies Ltd.
>



--=20
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.

Re: [PATCH V1 3/3] Rename exports in mpc5200_dma.c

[Grant Likely]

On Sun, Apr 26, 2009 at 10:27 PM, Jon Smirl <jonsmirl@gmail.com> wrote:
> On Mon, Apr 27, 2009 at 12:08 AM, Grant Likely
> <grant.likely@secretlab.ca> wrote:
>> On Sun, Apr 26, 2009 at 1:53 PM, Jon Smirl <jonsmirl@gmail.com> wrote:
>>> Rename the public DMA exports into the global name space so that the DM=
A code can be built as a module.
>>>
>>> Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
>>
>> Nack. =A0mpc5200_dma is too generic for the global namespace... (in
>> fact, I should also relook at the previous patch; I might need to nack
>> my ack). =A0Some variant of 'mpc5200_psc_snd_dma' would be more
>> appropriate. =A0Even mpc5200_psc_dma is too generic because other
>> non-sound PSC modes can use DMA also.
>
> I'll change it to mpc5200_audio_dma and resend this to the series to
> the alsa list.
>
> Does your stuff still work with these patches? I want to get these
> mechanical changes in so we can focus on the real changes in my later
> patches.

The project changed and I haven't fired up my target in quite a long time. =
 :-(

g.

>
>>
>> g.
>>
>>> ---
>>> =A0sound/soc/fsl/mpc5200_dma.c =A0 =A0 | =A0 18 ++++++++++++------
>>> =A0sound/soc/fsl/mpc5200_dma.h =A0 =A0 | =A0 10 +++++-----
>>> =A0sound/soc/fsl/mpc5200_psc_i2s.c | =A0 14 +++++++-------
>>> =A03 files changed, 24 insertions(+), 18 deletions(-)
>>>
>>> diff --git a/sound/soc/fsl/mpc5200_dma.c b/sound/soc/fsl/mpc5200_dma.c
>>> index c82ef75..df73755 100644
>>> --- a/sound/soc/fsl/mpc5200_dma.c
>>> +++ b/sound/soc/fsl/mpc5200_dma.c
>>> @@ -113,7 +113,7 @@ static irqreturn_t psc_dma_bcom_irq(int irq, void *=
_psc_dma_stream)
>>> =A0* If this is the first stream open, then grab the IRQ and program mo=
st of
>>> =A0* the PSC registers.
>>> =A0*/
>>> -int psc_dma_startup(struct snd_pcm_substream *substream,
>>> +int mpc5200_dma_startup(struct snd_pcm_substream *substream,
>>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai =
*dai)
>>> =A0{
>>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_d=
ata;
>>> @@ -145,13 +145,16 @@ int psc_dma_startup(struct snd_pcm_substream *sub=
stream,
>>>
>>> =A0 =A0 =A0 =A0return 0;
>>> =A0}
>>> +EXPORT_SYMBOL_GPL(mpc5200_dma_startup);
>>>
>>> -int psc_dma_hw_free(struct snd_pcm_substream *substream,
>>> +int mpc5200_dma_hw_free(struct snd_pcm_substream *substream,
>>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai =
*dai)
>>> =A0{
>>> =A0 =A0 =A0 =A0snd_pcm_set_runtime_buffer(substream, NULL);
>>> =A0 =A0 =A0 =A0return 0;
>>> =A0}
>>> +EXPORT_SYMBOL_GPL(mpc5200_dma_hw_free);
>>> +
>>>
>>> =A0/**
>>> =A0* psc_dma_trigger: start and stop the DMA transfer.
>>> @@ -159,7 +162,7 @@ int psc_dma_hw_free(struct snd_pcm_substream *subst=
ream,
>>> =A0* This function is called by ALSA to start, stop, pause, and resume =
the DMA
>>> =A0* transfer of data.
>>> =A0*/
>>> -int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
>>> +int mpc5200_dma_trigger(struct snd_pcm_substream *substream, int cmd,
>>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai =
*dai)
>>> =A0{
>>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_d=
ata;
>>> @@ -269,13 +272,15 @@ int psc_dma_trigger(struct snd_pcm_substream *sub=
stream, int cmd,
>>>
>>> =A0 =A0 =A0 =A0return 0;
>>> =A0}
>>> +EXPORT_SYMBOL_GPL(mpc5200_dma_trigger);
>>> +
>>>
>>> =A0/**
>>> =A0* psc_dma_shutdown: shutdown the data transfer on a stream
>>> =A0*
>>> =A0* Shutdown the PSC if there are no other substreams open.
>>> =A0*/
>>> -void psc_dma_shutdown(struct snd_pcm_substream *substream,
>>> +void mpc5200_dma_shutdown(struct snd_pcm_substream *substream,
>>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_=
dai *dai)
>>> =A0{
>>> =A0 =A0 =A0 =A0struct snd_soc_pcm_runtime *rtd =3D substream->private_d=
ata;
>>> @@ -303,6 +308,7 @@ void psc_dma_shutdown(struct snd_pcm_substream *sub=
stream,
>>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0free_irq(psc_dma->playback.irq, &psc_dma=
->playback);
>>> =A0 =A0 =A0 =A0}
>>> =A0}
>>> +EXPORT_SYMBOL_GPL(mpc5200_dma_shutdown);
>>>
>>> =A0/* -----------------------------------------------------------------=
----
>>> =A0* The PSC DMA 'ASoC platform' driver
>>> @@ -448,10 +454,10 @@ static void psc_dma_pcm_free(struct snd_pcm *pcm)
>>> =A0 =A0 =A0 =A0}
>>> =A0}
>>>
>>> -struct snd_soc_platform psc_dma_pcm_soc_platform =3D {
>>> +struct snd_soc_platform mpc5200_dma_platform =3D {
>>> =A0 =A0 =A0 =A0.name =A0 =A0 =A0 =A0 =A0 =3D "mpc5200-psc-audio",
>>> =A0 =A0 =A0 =A0.pcm_ops =A0 =A0 =A0 =A0=3D &psc_dma_pcm_ops,
>>> =A0 =A0 =A0 =A0.pcm_new =A0 =A0 =A0 =A0=3D &psc_dma_pcm_new,
>>> =A0 =A0 =A0 =A0.pcm_free =A0 =A0 =A0 =3D &psc_dma_pcm_free,
>>> =A0};
>>> -
>>> +EXPORT_SYMBOL_GPL(mpc5200_dma_platform);
>>> diff --git a/sound/soc/fsl/mpc5200_dma.h b/sound/soc/fsl/mpc5200_dma.h
>>> index a33232c..e52b90e 100644
>>> --- a/sound/soc/fsl/mpc5200_dma.h
>>> +++ b/sound/soc/fsl/mpc5200_dma.h
>>> @@ -64,18 +64,18 @@ struct psc_dma {
>>> =A0};
>>>
>>>
>>> -int psc_dma_startup(struct snd_pcm_substream *substream,
>>> +int mpc5200_dma_startup(struct snd_pcm_substream *substream,
>>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai =
*dai);
>>>
>>> -int psc_dma_hw_free(struct snd_pcm_substream *substream,
>>> +int mpc5200_dma_hw_free(struct snd_pcm_substream *substream,
>>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai =
*dai);
>>>
>>> -void psc_dma_shutdown(struct snd_pcm_substream *substream,
>>> +void mpc5200_dma_shutdown(struct snd_pcm_substream *substream,
>>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_=
dai *dai);
>>>
>>> -int psc_dma_trigger(struct snd_pcm_substream *substream, int cmd,
>>> +int mpc5200_dma_trigger(struct snd_pcm_substream *substream, int cmd,
>>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 struct snd_soc_dai =
*dai);
>>>
>>> -extern struct snd_soc_platform psc_dma_pcm_soc_platform;
>>> +extern struct snd_soc_platform mpc5200_dma_platform;
>>>
>>> =A0#endif /* __SOUND_SOC_FSL_MPC5200_DMA_H__ */
>>> diff --git a/sound/soc/fsl/mpc5200_psc_i2s.c b/sound/soc/fsl/mpc5200_ps=
c_i2s.c
>>> index 12a7917..a4a439c 100644
>>> --- a/sound/soc/fsl/mpc5200_psc_i2s.c
>>> +++ b/sound/soc/fsl/mpc5200_psc_i2s.c
>>> @@ -140,11 +140,11 @@ static int psc_i2s_set_fmt(struct snd_soc_dai *cp=
u_dai, unsigned int format)
>>> =A0* psc_i2s_dai_template: template CPU Digital Audio Interface
>>> =A0*/
>>> =A0static struct snd_soc_dai_ops psc_i2s_dai_ops =3D {
>>> - =A0 =A0 =A0 .startup =A0 =A0 =A0 =A0=3D psc_dma_startup,
>>> + =A0 =A0 =A0 .startup =A0 =A0 =A0 =A0=3D mpc5200_dma_startup,
>>> =A0 =A0 =A0 =A0.hw_params =A0 =A0 =A0=3D psc_i2s_hw_params,
>>> - =A0 =A0 =A0 .hw_free =A0 =A0 =A0 =A0=3D psc_dma_hw_free,
>>> - =A0 =A0 =A0 .shutdown =A0 =A0 =A0 =3D psc_dma_shutdown,
>>> - =A0 =A0 =A0 .trigger =A0 =A0 =A0 =A0=3D psc_dma_trigger,
>>> + =A0 =A0 =A0 .hw_free =A0 =A0 =A0 =A0=3D mpc5200_dma_hw_free,
>>> + =A0 =A0 =A0 .shutdown =A0 =A0 =A0 =3D mpc5200_dma_shutdown,
>>> + =A0 =A0 =A0 .trigger =A0 =A0 =A0 =A0=3D mpc5200_dma_trigger,
>>> =A0 =A0 =A0 =A0.set_sysclk =A0 =A0 =3D psc_i2s_set_sysclk,
>>> =A0 =A0 =A0 =A0.set_fmt =A0 =A0 =A0 =A0=3D psc_i2s_set_fmt,
>>> =A0};
>>> @@ -350,10 +350,10 @@ static int __devinit psc_i2s_of_probe(struct of_d=
evice *op,
>>> =A0 =A0 =A0 =A0if (rc)
>>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0dev_info(psc_dma->dev, "error creating s=
ysfs files\n");
>>>
>>> - =A0 =A0 =A0 snd_soc_register_platform(&psc_dma_pcm_soc_platform);
>>> + =A0 =A0 =A0 snd_soc_register_platform(&mpc5200_dma_platform);
>>>
>>> =A0 =A0 =A0 =A0/* Tell the ASoC OF helpers about it */
>>> - =A0 =A0 =A0 of_snd_soc_register_platform(&psc_dma_pcm_soc_platform, o=
p->node,
>>> + =A0 =A0 =A0 of_snd_soc_register_platform(&mpc5200_dma_platform, op->n=
ode,
>>> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0=
 &psc_dma->dai);
>>>
>>> =A0 =A0 =A0 =A0return 0;
>>> @@ -365,7 +365,7 @@ static int __devexit psc_i2s_of_remove(struct of_de=
vice *op)
>>>
>>> =A0 =A0 =A0 =A0dev_dbg(&op->dev, "psc_i2s_remove()\n");
>>>
>>> - =A0 =A0 =A0 snd_soc_unregister_platform(&psc_dma_pcm_soc_platform);
>>> + =A0 =A0 =A0 snd_soc_unregister_platform(&mpc5200_dma_platform);
>>>
>>> =A0 =A0 =A0 =A0bcom_gen_bd_rx_release(psc_dma->capture.bcom_task);
>>> =A0 =A0 =A0 =A0bcom_gen_bd_tx_release(psc_dma->playback.bcom_task);
>>>
>>>
>>
>>
>>
>> --
>> Grant Likely, B.Sc., P.Eng.
>> Secret Lab Technologies Ltd.
>>
>
>
>
> --
> Jon Smirl
> jonsmirl@gmail.com
>



--=20
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.