* [PATCH 01/10] ASoC: img: Add binding document for I2S input controller
2015-09-30 15:08 [PATCH 00/10] Add support for Imagination Technologies audio controllers Damien Horsley
@ 2015-09-30 15:08 ` Damien Horsley
2015-09-30 15:08 ` [PATCH 02/10] ASoC: img: Add driver " Damien Horsley
` (8 subsequent siblings)
9 siblings, 0 replies; 17+ messages in thread
From: Damien Horsley @ 2015-09-30 15:08 UTC (permalink / raw)
To: alsa-devel
Cc: Mark Rutland, devicetree, Pawel Moll, Ian Campbell, linux-kernel,
Mark Brown, Takashi Iwai, Liam Girdwood, Rob Herring, Kumar Gala,
Damien.Horsley
From: "Damien.Horsley" <Damien.Horsley@imgtec.com>
Add a binding document for Imagination Technologies I2S input
controller
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
---
.../devicetree/bindings/sound/img,i2s-in.txt | 45 ++++++++++++++++++++++
1 file changed, 45 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/img,i2s-in.txt
diff --git a/Documentation/devicetree/bindings/sound/img,i2s-in.txt b/Documentation/devicetree/bindings/sound/img,i2s-in.txt
new file mode 100644
index 0000000..a9e3c86
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/img,i2s-in.txt
@@ -0,0 +1,45 @@
+Imagination Technologies I2S Input Controller
+
+Required Properties:
+
+ - compatible : Compatible list, must contain "img,i2s-in"
+
+ - #sound-dai-cells : Must be equal to 0
+
+ - reg : Offset and length of the register set for the device
+
+ - clocks : Contains an entry for each entry in clock-names
+
+ - clock-names : Must include the following entry:
+ "sys" The system clock
+
+ - dmas: Contains an entry for each entry in dma-names.
+
+ - dma-names: Must include the following entry:
+ "rx" Single DMA channel used by all active I2S channels
+
+ - img,i2s-channels : Number of I2S channels instantiated in the I2S in block
+
+Optional Properties:
+
+ - interrupts : Contains the I2S in interrupts. Depending on
+ the configuration, there may be no interrupts, one interrupt,
+ or an interrupt per I2S channel
+
+ - resets: Contains a phandle to the I2S in reset signal
+
+ - reset-names: Contains the reset signal name "rst"
+
+Example:
+
+i2s_in: i2s-in@18100800 {
+ compatible = "img,i2s-in";
+ reg = <0x18100800 0x200>;
+ interrupts = <GIC_SHARED 7 IRQ_TYPE_LEVEL_HIGH>;
+ dmas = <&mdc 30 0xffffffff 0>;
+ dma-names = "rx";
+ clocks = <&cr_periph SYS_CLK_I2S_IN>;
+ clock-names = "sys";
+ img,i2s-channels = <6>;
+ #sound-dai-cells = <0>;
+};
--
2.1.4
^ permalink raw reply related [flat|nested] 17+ messages in thread* [PATCH 02/10] ASoC: img: Add driver for I2S input controller
2015-09-30 15:08 [PATCH 00/10] Add support for Imagination Technologies audio controllers Damien Horsley
2015-09-30 15:08 ` [PATCH 01/10] ASoC: img: Add binding document for I2S input controller Damien Horsley
@ 2015-09-30 15:08 ` Damien Horsley
2015-09-30 15:36 ` [alsa-devel] " kbuild test robot
2015-09-30 15:08 ` [PATCH 03/10] ASoC: img: Add binding document for I2S output controller Damien Horsley
` (7 subsequent siblings)
9 siblings, 1 reply; 17+ messages in thread
From: Damien Horsley @ 2015-09-30 15:08 UTC (permalink / raw)
To: alsa-devel
Cc: Mark Rutland, devicetree, Pawel Moll, Ian Campbell, linux-kernel,
Mark Brown, Takashi Iwai, Liam Girdwood, Rob Herring, Kumar Gala,
Damien.Horsley
From: "Damien.Horsley" <Damien.Horsley@imgtec.com>
Add driver for Imagination Technologies I2S input
controller
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
---
sound/soc/Kconfig | 1 +
sound/soc/Makefile | 1 +
sound/soc/img/Kconfig | 12 ++
sound/soc/img/Makefile | 1 +
sound/soc/img/img-i2s-in.c | 507 +++++++++++++++++++++++++++++++++++++++++++++
5 files changed, 522 insertions(+)
create mode 100644 sound/soc/img/Kconfig
create mode 100644 sound/soc/img/Makefile
create mode 100644 sound/soc/img/img-i2s-in.c
diff --git a/sound/soc/Kconfig b/sound/soc/Kconfig
index 7de792b..f9984db 100644
--- a/sound/soc/Kconfig
+++ b/sound/soc/Kconfig
@@ -47,6 +47,7 @@ source "sound/soc/jz4740/Kconfig"
source "sound/soc/nuc900/Kconfig"
source "sound/soc/omap/Kconfig"
source "sound/soc/kirkwood/Kconfig"
+source "sound/soc/img/Kconfig"
source "sound/soc/intel/Kconfig"
source "sound/soc/mediatek/Kconfig"
source "sound/soc/mxs/Kconfig"
diff --git a/sound/soc/Makefile b/sound/soc/Makefile
index af0a571..7ba9de9 100644
--- a/sound/soc/Makefile
+++ b/sound/soc/Makefile
@@ -26,6 +26,7 @@ obj-$(CONFIG_SND_SOC) += davinci/
obj-$(CONFIG_SND_SOC) += dwc/
obj-$(CONFIG_SND_SOC) += fsl/
obj-$(CONFIG_SND_SOC) += jz4740/
+obj-$(CONFIG_SND_SOC) += img/
obj-$(CONFIG_SND_SOC) += intel/
obj-$(CONFIG_SND_SOC) += mediatek/
obj-$(CONFIG_SND_SOC) += mxs/
diff --git a/sound/soc/img/Kconfig b/sound/soc/img/Kconfig
new file mode 100644
index 0000000..f9f73d0
--- /dev/null
+++ b/sound/soc/img/Kconfig
@@ -0,0 +1,12 @@
+config SND_SOC_IMG
+ bool "Audio support for Imagination Technologies designs"
+ help
+ Audio support for Imagination Technologies audio hardware
+
+config SND_SOC_IMG_I2S_IN
+ tristate "Imagination I2S Input Device Driver"
+ depends on SND_SOC_IMG
+ select SND_SOC_GENERIC_DMAENGINE_PCM
+ help
+ Say Y or M if you want to add support for I2S in driver for
+ Imagination Technologies I2S in device.
diff --git a/sound/soc/img/Makefile b/sound/soc/img/Makefile
new file mode 100644
index 0000000..fe8426b
--- /dev/null
+++ b/sound/soc/img/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_SND_SOC_IMG_I2S_IN) += img-i2s-in.o
diff --git a/sound/soc/img/img-i2s-in.c b/sound/soc/img/img-i2s-in.c
new file mode 100644
index 0000000..ebc59c4
--- /dev/null
+++ b/sound/soc/img/img-i2s-in.c
@@ -0,0 +1,507 @@
+/*
+ * IMG I2S input controller driver
+ *
+ * Copyright (C) 2015 Imagination Technologies Ltd.
+ *
+ * Author: Damien Horsley <Damien.Horsley@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#include <sound/core.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#define IMG_I2S_IN_RX_FIFO 0x0
+
+#define IMG_I2S_IN_CTL 0x4
+#define IMG_I2S_IN_CTL_ACTIVE_CHAN_MASK 0xfffffffc
+#define IMG_I2S_IN_CTL_ACTIVE_CH_SHIFT 2
+#define IMG_I2S_IN_CTL_16PACK_MASK BIT(1)
+#define IMG_I2S_IN_CTL_ME_MASK BIT(0)
+
+#define IMG_I2S_IN_CH_CTL 0x4
+#define IMG_I2S_IN_CH_CTL_CCDEL_MASK 0x38000
+#define IMG_I2S_IN_CH_CTL_CCDEL_SHIFT 15
+#define IMG_I2S_IN_CH_CTL_FEN_MASK BIT(14)
+#define IMG_I2S_IN_CH_CTL_FMODE_MASK BIT(13)
+#define IMG_I2S_IN_CH_CTL_16PACK_MASK BIT(12)
+#define IMG_I2S_IN_CH_CTL_JUST_MASK BIT(10)
+#define IMG_I2S_IN_CH_CTL_PACKH_MASK BIT(9)
+#define IMG_I2S_IN_CH_CTL_CLK_TRANS_MASK BIT(8)
+#define IMG_I2S_IN_CH_CTL_BLKP_MASK BIT(7)
+#define IMG_I2S_IN_CH_CTL_FIFO_FLUSH_MASK BIT(6)
+#define IMG_I2S_IN_CH_CTL_LRD_MASK BIT(3)
+#define IMG_I2S_IN_CH_CTL_FW_MASK BIT(2)
+#define IMG_I2S_IN_CH_CTL_SW_MASK BIT(1)
+#define IMG_I2S_IN_CH_CTL_ME_MASK BIT(0)
+
+#define IMG_I2S_IN_CH_STRIDE 0x20
+
+struct img_i2s_in {
+ void __iomem *base;
+ struct clk *clk_sys;
+ struct snd_dmaengine_dai_dma_data dma_data;
+ struct device *dev;
+ unsigned int max_i2s_chan;
+ void __iomem *channel_base;
+ unsigned int active_channels;
+ struct snd_soc_dai_driver dai_driver;
+};
+
+static inline void img_i2s_in_writel(struct img_i2s_in *i2s, u32 val, u32 reg)
+{
+ writel(val, i2s->base + reg);
+}
+
+static inline u32 img_i2s_in_readl(struct img_i2s_in *i2s, u32 reg)
+{
+ return readl(i2s->base + reg);
+}
+
+static inline void img_i2s_in_ch_writel(struct img_i2s_in *i2s, u32 chan,
+ u32 val, u32 reg)
+{
+ writel(val, i2s->channel_base + (chan * IMG_I2S_IN_CH_STRIDE) + reg);
+}
+
+static inline u32 img_i2s_in_ch_readl(struct img_i2s_in *i2s, u32 chan,
+ u32 reg)
+{
+ return readl(i2s->channel_base + (chan * IMG_I2S_IN_CH_STRIDE) + reg);
+}
+
+static inline u32 img_i2s_in_ch_disable(struct img_i2s_in *i2s, u32 chan)
+{
+ u32 reg;
+
+ reg = img_i2s_in_ch_readl(i2s, chan, IMG_I2S_IN_CH_CTL);
+ reg &= ~IMG_I2S_IN_CH_CTL_ME_MASK;
+ img_i2s_in_ch_writel(i2s, chan, reg, IMG_I2S_IN_CH_CTL);
+
+ return reg;
+}
+
+static inline void img_i2s_in_ch_enable(struct img_i2s_in *i2s, u32 chan,
+ u32 reg)
+{
+ reg |= IMG_I2S_IN_CH_CTL_ME_MASK;
+ img_i2s_in_ch_writel(i2s, chan, reg, IMG_I2S_IN_CH_CTL);
+}
+
+static inline void img_i2s_in_flush(struct img_i2s_in *i2s)
+{
+ int i;
+ u32 reg;
+
+ for (i = 0; i < i2s->active_channels; i++) {
+ reg = img_i2s_in_ch_disable(i2s, i);
+ reg |= IMG_I2S_IN_CH_CTL_FIFO_FLUSH_MASK;
+ img_i2s_in_ch_writel(i2s, i, reg, IMG_I2S_IN_CH_CTL);
+ reg &= ~IMG_I2S_IN_CH_CTL_FIFO_FLUSH_MASK;
+ img_i2s_in_ch_writel(i2s, i, reg, IMG_I2S_IN_CH_CTL);
+ img_i2s_in_ch_enable(i2s, i, reg);
+ }
+}
+
+static int img_i2s_in_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct img_i2s_in *i2s = snd_soc_dai_get_drvdata(dai);
+ u32 reg;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ reg = img_i2s_in_readl(i2s, IMG_I2S_IN_CTL);
+ reg |= IMG_I2S_IN_CTL_ME_MASK;
+ img_i2s_in_writel(i2s, reg, IMG_I2S_IN_CTL);
+ break;
+
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ reg = img_i2s_in_readl(i2s, IMG_I2S_IN_CTL);
+ reg &= ~IMG_I2S_IN_CTL_ME_MASK;
+ img_i2s_in_writel(i2s, reg, IMG_I2S_IN_CTL);
+ img_i2s_in_flush(i2s);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int img_i2s_in_check_rate(struct img_i2s_in *i2s,
+ unsigned int sample_rate, unsigned int frame_size,
+ unsigned int *bclk_filter_enable,
+ unsigned int *bclk_filter_value)
+{
+ unsigned int bclk_freq, cur_freq;
+
+ bclk_freq = sample_rate * frame_size;
+
+ cur_freq = clk_get_rate(i2s->clk_sys);
+
+ if (cur_freq >= bclk_freq * 8) {
+ *bclk_filter_enable = 1;
+ *bclk_filter_value = 0;
+ } else if (cur_freq >= bclk_freq * 7) {
+ *bclk_filter_enable = 1;
+ *bclk_filter_value = 1;
+ } else if (cur_freq >= bclk_freq * 6) {
+ *bclk_filter_enable = 0;
+ *bclk_filter_value = 0;
+ } else {
+ dev_err(i2s->dev,
+ "Sys clock rate %u insufficient for sample rate %u\n",
+ cur_freq, sample_rate);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int img_i2s_in_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+ struct img_i2s_in *i2s = snd_soc_dai_get_drvdata(dai);
+ unsigned int rate, channels, format, i2s_channels, frame_size;
+ unsigned int bclk_filter_enable, bclk_filter_value;
+ int i, ret = 0;
+ u32 reg, control_reg, control_mask, chan_control_mask;
+ u32 control_set = 0, chan_control_set = 0;
+
+ rate = params_rate(params);
+ format = params_format(params);
+ channels = params_channels(params);
+ i2s_channels = channels / 2;
+
+ switch (format) {
+ case SNDRV_PCM_FORMAT_S32_LE:
+ frame_size = 64;
+ chan_control_set |= IMG_I2S_IN_CH_CTL_SW_MASK;
+ chan_control_set |= IMG_I2S_IN_CH_CTL_FW_MASK;
+ chan_control_set |= IMG_I2S_IN_CH_CTL_PACKH_MASK;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ frame_size = 64;
+ chan_control_set |= IMG_I2S_IN_CH_CTL_SW_MASK;
+ chan_control_set |= IMG_I2S_IN_CH_CTL_FW_MASK;
+ break;
+ case SNDRV_PCM_FORMAT_S16_LE:
+ frame_size = 32;
+ control_set |= IMG_I2S_IN_CTL_16PACK_MASK;
+ chan_control_set |= IMG_I2S_IN_CH_CTL_16PACK_MASK;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if ((channels < 2) ||
+ (channels > (i2s->max_i2s_chan * 2)) ||
+ (channels % 2))
+ return -EINVAL;
+
+ control_set |= ((i2s_channels - 1) << IMG_I2S_IN_CTL_ACTIVE_CH_SHIFT);
+
+ ret = img_i2s_in_check_rate(i2s, rate, frame_size,
+ &bclk_filter_enable, &bclk_filter_value);
+ if (ret < 0)
+ return ret;
+
+ if (bclk_filter_enable)
+ chan_control_set |= IMG_I2S_IN_CH_CTL_FEN_MASK;
+
+ if (bclk_filter_value)
+ chan_control_set |= IMG_I2S_IN_CH_CTL_FMODE_MASK;
+
+ control_mask = ~IMG_I2S_IN_CTL_16PACK_MASK &
+ ~IMG_I2S_IN_CTL_ACTIVE_CHAN_MASK;
+
+ chan_control_mask = ~IMG_I2S_IN_CH_CTL_16PACK_MASK &
+ ~IMG_I2S_IN_CH_CTL_FEN_MASK &
+ ~IMG_I2S_IN_CH_CTL_FMODE_MASK &
+ ~IMG_I2S_IN_CH_CTL_SW_MASK &
+ ~IMG_I2S_IN_CH_CTL_FW_MASK &
+ ~IMG_I2S_IN_CH_CTL_PACKH_MASK;
+
+ control_reg = img_i2s_in_readl(i2s, IMG_I2S_IN_CTL);
+ control_reg = (control_reg & control_mask) | control_set;
+ img_i2s_in_writel(i2s, control_reg, IMG_I2S_IN_CTL);
+
+ for (i = 0; i < i2s_channels; i++) {
+ reg = img_i2s_in_ch_disable(i2s, i);
+ reg = (reg & chan_control_mask) | chan_control_set;
+ img_i2s_in_ch_writel(i2s, i, reg, IMG_I2S_IN_CH_CTL);
+ img_i2s_in_ch_enable(i2s, i, reg);
+ }
+ for (; i < i2s->max_i2s_chan; i++) {
+ reg = img_i2s_in_ch_disable(i2s, i);
+ reg = (reg & chan_control_mask) | chan_control_set;
+ img_i2s_in_ch_writel(i2s, i, reg, IMG_I2S_IN_CH_CTL);
+ }
+
+ i2s->active_channels = i2s_channels;
+
+ return 0;
+}
+
+static int img_i2s_in_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct img_i2s_in *i2s = snd_soc_dai_get_drvdata(dai);
+ int i;
+ u32 chan_control_mask, lrd_set = 0, blkp_set = 0, chan_control_set = 0;
+ u32 reg;
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ lrd_set |= IMG_I2S_IN_CH_CTL_LRD_MASK;
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ lrd_set |= IMG_I2S_IN_CH_CTL_LRD_MASK;
+ blkp_set |= IMG_I2S_IN_CH_CTL_BLKP_MASK;
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ blkp_set |= IMG_I2S_IN_CH_CTL_BLKP_MASK;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ chan_control_set |= IMG_I2S_IN_CH_CTL_CLK_TRANS_MASK;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ chan_control_mask = ~IMG_I2S_IN_CH_CTL_CLK_TRANS_MASK;
+
+ /*
+ * BLKP and LRD must be set during separate register writes
+ */
+ for (i = 0; i < i2s->active_channels; i++) {
+ reg = img_i2s_in_ch_disable(i2s, i);
+ reg = (reg & chan_control_mask) | chan_control_set;
+ img_i2s_in_ch_writel(i2s, i, reg, IMG_I2S_IN_CH_CTL);
+ reg = (reg & ~IMG_I2S_IN_CH_CTL_BLKP_MASK) | blkp_set;
+ img_i2s_in_ch_writel(i2s, i, reg, IMG_I2S_IN_CH_CTL);
+ reg = (reg & ~IMG_I2S_IN_CH_CTL_LRD_MASK) | lrd_set;
+ img_i2s_in_ch_writel(i2s, i, reg, IMG_I2S_IN_CH_CTL);
+ img_i2s_in_ch_enable(i2s, i, reg);
+ }
+
+ for (; i < i2s->max_i2s_chan; i++) {
+ reg = img_i2s_in_ch_readl(i2s, i, IMG_I2S_IN_CH_CTL);
+ reg = (reg & chan_control_mask) | chan_control_set;
+ img_i2s_in_ch_writel(i2s, i, reg, IMG_I2S_IN_CH_CTL);
+ reg = (reg & ~IMG_I2S_IN_CH_CTL_BLKP_MASK) | blkp_set;
+ img_i2s_in_ch_writel(i2s, i, reg, IMG_I2S_IN_CH_CTL);
+ reg = (reg & ~IMG_I2S_IN_CH_CTL_LRD_MASK) | lrd_set;
+ img_i2s_in_ch_writel(i2s, i, reg, IMG_I2S_IN_CH_CTL);
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops img_i2s_in_dai_ops = {
+ .trigger = img_i2s_in_trigger,
+ .hw_params = img_i2s_in_hw_params,
+ .set_fmt = img_i2s_in_set_fmt
+};
+
+static int img_i2s_in_dai_probe(struct snd_soc_dai *dai)
+{
+ struct img_i2s_in *i2s = snd_soc_dai_get_drvdata(dai);
+
+ snd_soc_dai_init_dma_data(dai, NULL, &i2s->dma_data);
+
+ return 0;
+}
+
+static const struct snd_soc_component_driver img_i2s_in_component = {
+ .name = "img-i2s-in"
+};
+
+static int img_i2s_in_dma_prepare_slave_config(struct snd_pcm_substream *st,
+ struct snd_pcm_hw_params *params, struct dma_slave_config *sc)
+{
+ unsigned int i2s_channels = params_channels(params) / 2;
+ struct snd_soc_pcm_runtime *rtd = st->private_data;
+ struct snd_dmaengine_dai_dma_data *dma_data;
+ int ret;
+
+ dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, st);
+
+ ret = snd_hwparams_to_dma_slave_config(st, params, sc);
+ if (ret)
+ return ret;
+
+ sc->src_addr = dma_data->addr;
+ sc->src_addr_width = dma_data->addr_width;
+ sc->src_maxburst = 4 * i2s_channels;
+
+ return 0;
+}
+
+static const struct snd_dmaengine_pcm_config img_i2s_in_dma_config = {
+ .prepare_slave_config = img_i2s_in_dma_prepare_slave_config
+};
+
+static int img_i2s_in_probe(struct platform_device *pdev)
+{
+ struct img_i2s_in *i2s;
+ struct resource *res;
+ void __iomem *base;
+ int ret, i;
+ struct reset_control *rst;
+ u32 reg;
+ unsigned int max_i2s_chan_pow_2;
+ struct device *dev = &pdev->dev;
+
+ i2s = devm_kzalloc(dev, sizeof(*i2s), GFP_KERNEL);
+ if (!i2s)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, i2s);
+
+ i2s->dev = dev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ i2s->base = base;
+
+ if (of_property_read_u32(pdev->dev.of_node, "img,i2s-channels",
+ &i2s->max_i2s_chan)) {
+ dev_err(dev, "No img,i2s-channels property\n");
+ return -EINVAL;
+ }
+
+ max_i2s_chan_pow_2 = 1 << get_count_order(i2s->max_i2s_chan);
+
+ i2s->channel_base = base + (max_i2s_chan_pow_2 * 0x20);
+
+ i2s->clk_sys = devm_clk_get(dev, "sys");
+ if (IS_ERR(i2s->clk_sys))
+ return PTR_ERR(i2s->clk_sys);
+
+ ret = clk_prepare_enable(i2s->clk_sys);
+ if (ret)
+ return ret;
+
+ i2s->active_channels = 1;
+ i2s->dma_data.addr = res->start + IMG_I2S_IN_RX_FIFO;
+ i2s->dma_data.addr_width = 4;
+
+ i2s->dai_driver.probe = img_i2s_in_dai_probe;
+ i2s->dai_driver.capture.channels_min = 2;
+ i2s->dai_driver.capture.channels_max = i2s->max_i2s_chan * 2;
+ i2s->dai_driver.capture.rates = SNDRV_PCM_RATE_8000_192000;
+ i2s->dai_driver.capture.formats = SNDRV_PCM_FMTBIT_S32_LE |
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE;
+ i2s->dai_driver.ops = &img_i2s_in_dai_ops;
+
+ rst = devm_reset_control_get(dev, "rst");
+ if (IS_ERR(rst)) {
+ dev_dbg(dev, "No top level reset found\n");
+
+ reg = img_i2s_in_readl(i2s, IMG_I2S_IN_CTL);
+ reg &= ~IMG_I2S_IN_CTL_ME_MASK;
+ img_i2s_in_writel(i2s, reg, IMG_I2S_IN_CTL);
+
+ for (i = 0; i < i2s->max_i2s_chan; i++) {
+ reg = img_i2s_in_ch_disable(i2s, i);
+ reg |= IMG_I2S_IN_CH_CTL_FIFO_FLUSH_MASK;
+ img_i2s_in_ch_writel(i2s, i, reg, IMG_I2S_IN_CH_CTL);
+ reg &= ~IMG_I2S_IN_CH_CTL_FIFO_FLUSH_MASK;
+ img_i2s_in_ch_writel(i2s, i, reg, IMG_I2S_IN_CH_CTL);
+ }
+ } else {
+ reset_control_assert(rst);
+ reset_control_deassert(rst);
+ }
+
+ img_i2s_in_writel(i2s, 0, IMG_I2S_IN_CTL);
+
+ for (i = 0; i < i2s->max_i2s_chan; i++)
+ img_i2s_in_ch_writel(i2s, i,
+ (4 << IMG_I2S_IN_CH_CTL_CCDEL_SHIFT) |
+ IMG_I2S_IN_CH_CTL_JUST_MASK |
+ IMG_I2S_IN_CH_CTL_FW_MASK, IMG_I2S_IN_CH_CTL);
+
+ ret = devm_snd_soc_register_component(dev, &img_i2s_in_component,
+ &i2s->dai_driver, 1);
+ if (ret)
+ goto err_clk_disable;
+
+ ret = devm_snd_dmaengine_pcm_register(dev, &img_i2s_in_dma_config, 0);
+ if (ret)
+ goto err_clk_disable;
+
+ return 0;
+
+err_clk_disable:
+ clk_disable_unprepare(i2s->clk_sys);
+
+ return ret;
+}
+
+static int img_i2s_in_dev_remove(struct platform_device *pdev)
+{
+ struct img_i2s_in *i2s = platform_get_drvdata(pdev);
+
+ clk_disable_unprepare(i2s->clk_sys);
+
+ return 0;
+}
+
+static const struct of_device_id img_i2s_in_of_match[] = {
+ { .compatible = "img,i2s-in" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, img_i2s_in_of_match);
+
+static struct platform_driver img_i2s_in_driver = {
+ .driver = {
+ .name = "img-i2s-in",
+ .of_match_table = img_i2s_in_of_match
+ },
+ .probe = img_i2s_in_probe,
+ .remove = img_i2s_in_dev_remove
+};
+module_platform_driver(img_i2s_in_driver);
+
+MODULE_AUTHOR("Damien Horsley <Damien.Horsley@imgtec.com>");
+MODULE_DESCRIPTION("IMG I2S Input Driver");
+MODULE_LICENSE("GPL v2");
--
2.1.4
^ permalink raw reply related [flat|nested] 17+ messages in thread* Re: [alsa-devel] [PATCH 02/10] ASoC: img: Add driver for I2S input controller
2015-09-30 15:08 ` [PATCH 02/10] ASoC: img: Add driver " Damien Horsley
@ 2015-09-30 15:36 ` kbuild test robot
0 siblings, 0 replies; 17+ messages in thread
From: kbuild test robot @ 2015-09-30 15:36 UTC (permalink / raw)
Cc: kbuild-all, alsa-devel, Mark Rutland, devicetree, Pawel Moll,
Ian Campbell, linux-kernel, Mark Brown, Takashi Iwai,
Liam Girdwood, Rob Herring, Kumar Gala, Damien.Horsley
[-- Attachment #1: Type: text/plain, Size: 4662 bytes --]
Hi Damien.Horsley,
[auto build test results on v4.3-rc3 -- if it's inappropriate base, please ignore]
config: x86_64-allmodconfig (attached as .config)
reproduce:
git checkout 4cccb3ee5a59803694ffb4e45054f3981e02aa4c
# save the attached .config to linux build tree
make ARCH=x86_64
All warnings (new ones prefixed by >>):
sound/soc/img/img-i2s-in.c:191:16: sparse: incorrect type in assignment (different base types)
sound/soc/img/img-i2s-in.c:191:16: expected unsigned int [unsigned] format
sound/soc/img/img-i2s-in.c:191:16: got restricted snd_pcm_format_t
sound/soc/img/img-i2s-in.c:196:14: sparse: restricted snd_pcm_format_t degrades to integer
sound/soc/img/img-i2s-in.c:202:14: sparse: restricted snd_pcm_format_t degrades to integer
sound/soc/img/img-i2s-in.c:207:14: sparse: restricted snd_pcm_format_t degrades to integer
sound/soc/img/img-i2s-in.c: In function 'img_i2s_in_hw_params':
>> sound/soc/img/img-i2s-in.c:237:22: warning: large integer implicitly truncated to unsigned type [-Woverflow]
chan_control_mask = ~IMG_I2S_IN_CH_CTL_16PACK_MASK &
^
sound/soc/img/img-i2s-in.c: In function 'img_i2s_in_set_fmt':
sound/soc/img/img-i2s-in.c:306:22: warning: large integer implicitly truncated to unsigned type [-Woverflow]
chan_control_mask = ~IMG_I2S_IN_CH_CTL_CLK_TRANS_MASK;
^
sparse warnings: (new ones prefixed by >>)
>> sound/soc/img/img-i2s-in.c:191:16: sparse: incorrect type in assignment (different base types)
sound/soc/img/img-i2s-in.c:191:16: expected unsigned int [unsigned] format
sound/soc/img/img-i2s-in.c:191:16: got restricted snd_pcm_format_t
>> sound/soc/img/img-i2s-in.c:196:14: sparse: restricted snd_pcm_format_t degrades to integer
sound/soc/img/img-i2s-in.c:202:14: sparse: restricted snd_pcm_format_t degrades to integer
sound/soc/img/img-i2s-in.c:207:14: sparse: restricted snd_pcm_format_t degrades to integer
sound/soc/img/img-i2s-in.c: In function 'img_i2s_in_hw_params':
sound/soc/img/img-i2s-in.c:237:22: warning: large integer implicitly truncated to unsigned type [-Woverflow]
chan_control_mask = ~IMG_I2S_IN_CH_CTL_16PACK_MASK &
^
sound/soc/img/img-i2s-in.c: In function 'img_i2s_in_set_fmt':
sound/soc/img/img-i2s-in.c:306:22: warning: large integer implicitly truncated to unsigned type [-Woverflow]
chan_control_mask = ~IMG_I2S_IN_CH_CTL_CLK_TRANS_MASK;
^
vim +237 sound/soc/img/img-i2s-in.c
185 unsigned int bclk_filter_enable, bclk_filter_value;
186 int i, ret = 0;
187 u32 reg, control_reg, control_mask, chan_control_mask;
188 u32 control_set = 0, chan_control_set = 0;
189
190 rate = params_rate(params);
> 191 format = params_format(params);
192 channels = params_channels(params);
193 i2s_channels = channels / 2;
194
195 switch (format) {
> 196 case SNDRV_PCM_FORMAT_S32_LE:
197 frame_size = 64;
198 chan_control_set |= IMG_I2S_IN_CH_CTL_SW_MASK;
199 chan_control_set |= IMG_I2S_IN_CH_CTL_FW_MASK;
200 chan_control_set |= IMG_I2S_IN_CH_CTL_PACKH_MASK;
201 break;
202 case SNDRV_PCM_FORMAT_S24_LE:
203 frame_size = 64;
204 chan_control_set |= IMG_I2S_IN_CH_CTL_SW_MASK;
205 chan_control_set |= IMG_I2S_IN_CH_CTL_FW_MASK;
206 break;
207 case SNDRV_PCM_FORMAT_S16_LE:
208 frame_size = 32;
209 control_set |= IMG_I2S_IN_CTL_16PACK_MASK;
210 chan_control_set |= IMG_I2S_IN_CH_CTL_16PACK_MASK;
211 break;
212 default:
213 return -EINVAL;
214 }
215
216 if ((channels < 2) ||
217 (channels > (i2s->max_i2s_chan * 2)) ||
218 (channels % 2))
219 return -EINVAL;
220
221 control_set |= ((i2s_channels - 1) << IMG_I2S_IN_CTL_ACTIVE_CH_SHIFT);
222
223 ret = img_i2s_in_check_rate(i2s, rate, frame_size,
224 &bclk_filter_enable, &bclk_filter_value);
225 if (ret < 0)
226 return ret;
227
228 if (bclk_filter_enable)
229 chan_control_set |= IMG_I2S_IN_CH_CTL_FEN_MASK;
230
231 if (bclk_filter_value)
232 chan_control_set |= IMG_I2S_IN_CH_CTL_FMODE_MASK;
233
234 control_mask = ~IMG_I2S_IN_CTL_16PACK_MASK &
235 ~IMG_I2S_IN_CTL_ACTIVE_CHAN_MASK;
236
> 237 chan_control_mask = ~IMG_I2S_IN_CH_CTL_16PACK_MASK &
238 ~IMG_I2S_IN_CH_CTL_FEN_MASK &
239 ~IMG_I2S_IN_CH_CTL_FMODE_MASK &
240 ~IMG_I2S_IN_CH_CTL_SW_MASK &
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
[-- Attachment #2: .config.gz --]
[-- Type: application/octet-stream, Size: 50068 bytes --]
^ permalink raw reply [flat|nested] 17+ messages in thread
* [PATCH 03/10] ASoC: img: Add binding document for I2S output controller
2015-09-30 15:08 [PATCH 00/10] Add support for Imagination Technologies audio controllers Damien Horsley
2015-09-30 15:08 ` [PATCH 01/10] ASoC: img: Add binding document for I2S input controller Damien Horsley
2015-09-30 15:08 ` [PATCH 02/10] ASoC: img: Add driver " Damien Horsley
@ 2015-09-30 15:08 ` Damien Horsley
2015-09-30 15:08 ` [PATCH 04/10] ASoC: img: Add driver " Damien Horsley
` (6 subsequent siblings)
9 siblings, 0 replies; 17+ messages in thread
From: Damien Horsley @ 2015-09-30 15:08 UTC (permalink / raw)
To: alsa-devel
Cc: Mark Rutland, devicetree, Pawel Moll, Ian Campbell, linux-kernel,
Mark Brown, Takashi Iwai, Liam Girdwood, Rob Herring, Kumar Gala,
Damien.Horsley
From: "Damien.Horsley" <Damien.Horsley@imgtec.com>
Add binding document for Imagination Technologies I2S output
controller
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
---
.../devicetree/bindings/sound/img,i2s-out.txt | 49 ++++++++++++++++++++++
1 file changed, 49 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/img,i2s-out.txt
diff --git a/Documentation/devicetree/bindings/sound/img,i2s-out.txt b/Documentation/devicetree/bindings/sound/img,i2s-out.txt
new file mode 100644
index 0000000..dc110ce
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/img,i2s-out.txt
@@ -0,0 +1,49 @@
+Imagination Technologies I2S Output Controller
+
+Required Properties:
+
+ - compatible : Compatible list, must contain "img,i2s-out"
+
+ - #sound-dai-cells : Must be equal to 0
+
+ - reg : Offset and length of the register set for the device
+
+ - clocks : Contains an entry for each entry in clock-names
+
+ - clock-names : Must include the following entries:
+ "sys" The system clock
+ "ref" The reference clock
+
+ - dmas: Contains an entry for each entry in dma-names.
+
+ - dma-names: Must include the following entry:
+ "tx" Single DMA channel used by all active I2S channels
+
+ - img,i2s-channels : Number of I2S channels instantiated in the I2S out block
+
+ - resets: Contains a phandle to the I2S out reset signal
+
+ - reset-names: Contains the reset signal name "rst"
+
+Optional Properties:
+
+ - interrupts : Contains the I2S out interrupts. Depending on
+ the configuration, there may be no interrupts, one interrupt,
+ or an interrupt per I2S channel
+
+Example:
+
+i2s_out: i2s-out@18100A00 {
+ compatible = "img,i2s-out";
+ reg = <0x18100A00 0x200>;
+ interrupts = <GIC_SHARED 13 IRQ_TYPE_LEVEL_HIGH>;
+ dmas = <&mdc 23 0xffffffff 0>;
+ dma-names = "tx";
+ clocks = <&cr_periph SYS_CLK_I2S_OUT>,
+ <&clk_core CLK_I2S>;
+ clock-names = "sys", "ref";
+ img,i2s-channels = <6>;
+ resets = <&pistachio_reset PISTACHIO_RESET_I2S_OUT>;
+ reset-names = "rst";
+ #sound-dai-cells = <0>;
+};
--
2.1.4
^ permalink raw reply related [flat|nested] 17+ messages in thread* [PATCH 04/10] ASoC: img: Add driver for I2S output controller
2015-09-30 15:08 [PATCH 00/10] Add support for Imagination Technologies audio controllers Damien Horsley
` (2 preceding siblings ...)
2015-09-30 15:08 ` [PATCH 03/10] ASoC: img: Add binding document for I2S output controller Damien Horsley
@ 2015-09-30 15:08 ` Damien Horsley
[not found] ` <1443625696-29296-5-git-send-email-Damien.Horsley-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>
2015-09-30 15:08 ` [PATCH 05/10] ASoC: img: Add binding document for parallel " Damien Horsley
` (5 subsequent siblings)
9 siblings, 1 reply; 17+ messages in thread
From: Damien Horsley @ 2015-09-30 15:08 UTC (permalink / raw)
To: alsa-devel
Cc: Mark Rutland, devicetree, Pawel Moll, Ian Campbell, linux-kernel,
Mark Brown, Takashi Iwai, Liam Girdwood, Rob Herring, Kumar Gala,
Damien.Horsley
From: "Damien.Horsley" <Damien.Horsley@imgtec.com>
Add driver for Imagination Technologies I2S output
controller
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
---
sound/soc/img/Kconfig | 8 +
sound/soc/img/Makefile | 1 +
sound/soc/img/img-i2s-out.c | 551 ++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 560 insertions(+)
create mode 100644 sound/soc/img/img-i2s-out.c
diff --git a/sound/soc/img/Kconfig b/sound/soc/img/Kconfig
index f9f73d0..fe83c8e 100644
--- a/sound/soc/img/Kconfig
+++ b/sound/soc/img/Kconfig
@@ -10,3 +10,11 @@ config SND_SOC_IMG_I2S_IN
help
Say Y or M if you want to add support for I2S in driver for
Imagination Technologies I2S in device.
+
+config SND_SOC_IMG_I2S_OUT
+ tristate "Imagination I2S Output Device Driver"
+ depends on SND_SOC_IMG
+ select SND_SOC_GENERIC_DMAENGINE_PCM
+ help
+ Say Y or M if you want to add support for I2S out driver for
+ Imagination Technologies I2S out device.
diff --git a/sound/soc/img/Makefile b/sound/soc/img/Makefile
index fe8426b..c41a4af 100644
--- a/sound/soc/img/Makefile
+++ b/sound/soc/img/Makefile
@@ -1 +1,2 @@
obj-$(CONFIG_SND_SOC_IMG_I2S_IN) += img-i2s-in.o
+obj-$(CONFIG_SND_SOC_IMG_I2S_OUT) += img-i2s-out.o
diff --git a/sound/soc/img/img-i2s-out.c b/sound/soc/img/img-i2s-out.c
new file mode 100644
index 0000000..c23e4f8
--- /dev/null
+++ b/sound/soc/img/img-i2s-out.c
@@ -0,0 +1,551 @@
+/*
+ * IMG I2S output controller driver
+ *
+ * Copyright (C) 2015 Imagination Technologies Ltd.
+ *
+ * Author: Damien Horsley <Damien.Horsley@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/reset.h>
+
+#include <sound/core.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#define IMG_I2S_OUT_TX_FIFO 0x0
+
+#define IMG_I2S_OUT_CTL 0x4
+#define IMG_I2S_OUT_CTL_DATA_EN_MASK BIT(24)
+#define IMG_I2S_OUT_CTL_ACTIVE_CHAN_MASK 0xffe000
+#define IMG_I2S_OUT_CTL_ACTIVE_CHAN_SHIFT 13
+#define IMG_I2S_OUT_CTL_FRM_SIZE_MASK BIT(8)
+#define IMG_I2S_OUT_CTL_MASTER_MASK BIT(6)
+#define IMG_I2S_OUT_CTL_CLK_MASK BIT(5)
+#define IMG_I2S_OUT_CTL_CLK_EN_MASK BIT(4)
+#define IMG_I2S_OUT_CTL_FRM_CLK_POL_MASK BIT(3)
+#define IMG_I2S_OUT_CTL_BCLK_POL_MASK BIT(2)
+#define IMG_I2S_OUT_CTL_ME_MASK BIT(0)
+
+#define IMG_I2S_OUT_CH_CTL 0x4
+#define IMG_I2S_OUT_CHAN_CTL_CH_MASK BIT(11)
+#define IMG_I2S_OUT_CHAN_CTL_LT_MASK BIT(10)
+#define IMG_I2S_OUT_CHAN_CTL_FMT_MASK 0xf0
+#define IMG_I2S_OUT_CHAN_CTL_FMT_SHIFT 4
+#define IMG_I2S_OUT_CHAN_CTL_JUST_MASK BIT(3)
+#define IMG_I2S_OUT_CHAN_CTL_CLKT_MASK BIT(1)
+#define IMG_I2S_OUT_CHAN_CTL_ME_MASK BIT(0)
+
+#define IMG_I2S_OUT_CH_STRIDE 0x20
+
+struct img_i2s_out {
+ void __iomem *base;
+ struct clk *clk_sys;
+ struct clk *clk_ref;
+ struct snd_dmaengine_dai_dma_data dma_data;
+ struct device *dev;
+ unsigned int max_i2s_chan;
+ void __iomem *channel_base;
+ bool force_clk_active;
+ unsigned int active_channels;
+ struct reset_control *rst;
+ struct snd_soc_dai_driver dai_driver;
+};
+
+static int img_i2s_out_suspend(struct device *dev)
+{
+ struct img_i2s_out *i2s = dev_get_drvdata(dev);
+
+ if (!i2s->force_clk_active)
+ clk_disable_unprepare(i2s->clk_ref);
+
+ return 0;
+}
+
+static int img_i2s_out_resume(struct device *dev)
+{
+ struct img_i2s_out *i2s = dev_get_drvdata(dev);
+ int ret;
+
+ if (!i2s->force_clk_active) {
+ ret = clk_prepare_enable(i2s->clk_ref);
+ if (ret) {
+ dev_err(dev, "clk_enable failed: %d\n", ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static inline void img_i2s_out_writel(struct img_i2s_out *i2s, u32 val,
+ u32 reg)
+{
+ writel(val, i2s->base + reg);
+}
+
+static inline u32 img_i2s_out_readl(struct img_i2s_out *i2s, u32 reg)
+{
+ return readl(i2s->base + reg);
+}
+
+static inline void img_i2s_out_ch_writel(struct img_i2s_out *i2s,
+ u32 chan, u32 val, u32 reg)
+{
+ writel(val, i2s->channel_base + (chan * IMG_I2S_OUT_CH_STRIDE) + reg);
+}
+
+static inline u32 img_i2s_out_ch_readl(struct img_i2s_out *i2s, u32 chan,
+ u32 reg)
+{
+ return readl(i2s->channel_base + (chan * IMG_I2S_OUT_CH_STRIDE) + reg);
+}
+
+static inline u32 img_i2s_out_ch_disable(struct img_i2s_out *i2s, u32 chan)
+{
+ u32 reg;
+
+ reg = img_i2s_out_ch_readl(i2s, chan, IMG_I2S_OUT_CH_CTL);
+ reg &= ~IMG_I2S_OUT_CHAN_CTL_ME_MASK;
+ img_i2s_out_ch_writel(i2s, chan, reg, IMG_I2S_OUT_CH_CTL);
+
+ return reg;
+}
+
+static inline void img_i2s_out_ch_enable(struct img_i2s_out *i2s, u32 chan,
+ u32 reg)
+{
+ reg |= IMG_I2S_OUT_CHAN_CTL_ME_MASK;
+ img_i2s_out_ch_writel(i2s, chan, reg, IMG_I2S_OUT_CH_CTL);
+}
+
+static inline u32 img_i2s_out_disable(struct img_i2s_out *i2s)
+{
+ u32 reg;
+
+ reg = img_i2s_out_readl(i2s, IMG_I2S_OUT_CTL);
+ reg &= ~IMG_I2S_OUT_CTL_ME_MASK;
+ img_i2s_out_writel(i2s, reg, IMG_I2S_OUT_CTL);
+
+ return reg;
+}
+
+static inline void img_i2s_out_enable(struct img_i2s_out *i2s, u32 reg)
+{
+ reg |= IMG_I2S_OUT_CTL_ME_MASK;
+ img_i2s_out_writel(i2s, reg, IMG_I2S_OUT_CTL);
+}
+
+static void img_i2s_out_reset(struct img_i2s_out *i2s)
+{
+ int i;
+ u32 core_ctl, chan_ctl;
+
+ core_ctl = img_i2s_out_readl(i2s, IMG_I2S_OUT_CTL) &
+ ~IMG_I2S_OUT_CTL_ME_MASK &
+ ~IMG_I2S_OUT_CTL_DATA_EN_MASK;
+
+ if (!i2s->force_clk_active)
+ core_ctl &= ~IMG_I2S_OUT_CTL_CLK_EN_MASK;
+
+ chan_ctl = img_i2s_out_ch_readl(i2s, 0, IMG_I2S_OUT_CH_CTL) &
+ ~IMG_I2S_OUT_CHAN_CTL_ME_MASK;
+
+ reset_control_assert(i2s->rst);
+ reset_control_deassert(i2s->rst);
+
+ for (i = 0; i < i2s->max_i2s_chan; i++)
+ img_i2s_out_ch_writel(i2s, i, chan_ctl, IMG_I2S_OUT_CH_CTL);
+
+ for (i = 0; i < i2s->active_channels; i++)
+ img_i2s_out_ch_enable(i2s, i, chan_ctl);
+
+ img_i2s_out_writel(i2s, core_ctl, IMG_I2S_OUT_CTL);
+ img_i2s_out_enable(i2s, core_ctl);
+}
+
+static int img_i2s_out_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct img_i2s_out *i2s = snd_soc_dai_get_drvdata(dai);
+ u32 reg;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ reg = img_i2s_out_readl(i2s, IMG_I2S_OUT_CTL);
+ if (!i2s->force_clk_active)
+ reg |= IMG_I2S_OUT_CTL_CLK_EN_MASK;
+ reg |= IMG_I2S_OUT_CTL_DATA_EN_MASK;
+ img_i2s_out_writel(i2s, reg, IMG_I2S_OUT_CTL);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ img_i2s_out_reset(i2s);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int img_i2s_out_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+ struct img_i2s_out *i2s = snd_soc_dai_get_drvdata(dai);
+ unsigned int channels, i2s_channels, format;
+ long pre_div_a, pre_div_b, diff_a, diff_b, rate, clk_rate;
+ int i;
+ u32 reg, control_reg, control_mask, control_set = 0;
+
+ rate = params_rate(params);
+ format = params_format(params);
+ channels = params_channels(params);
+ i2s_channels = channels / 2;
+
+ if (format != SNDRV_PCM_FORMAT_S32_LE)
+ return -EINVAL;
+
+ if ((channels < 2) ||
+ (channels > (i2s->max_i2s_chan * 2)) ||
+ (channels % 2))
+ return -EINVAL;
+
+ pre_div_a = clk_round_rate(i2s->clk_ref, rate * 256);
+ if (pre_div_a < 0)
+ return pre_div_a;
+ pre_div_b = clk_round_rate(i2s->clk_ref, rate * 384);
+ if (pre_div_b < 0)
+ return pre_div_b;
+
+ diff_a = abs((pre_div_a / 256) - rate);
+ diff_b = abs((pre_div_b / 384) - rate);
+
+ /* If diffs are equal, use lower clock rate */
+ if (diff_a > diff_b)
+ clk_set_rate(i2s->clk_ref, pre_div_b);
+ else
+ clk_set_rate(i2s->clk_ref, pre_div_a);
+
+ /*
+ * Another driver (eg alsa machine driver) may have rejected the above
+ * change. Get the current rate and set the register bit according to
+ * the new minimum diff
+ */
+ clk_rate = clk_get_rate(i2s->clk_ref);
+
+ diff_a = abs((clk_rate / 256) - rate);
+ diff_b = abs((clk_rate / 384) - rate);
+
+ if (diff_a > diff_b)
+ control_set |= IMG_I2S_OUT_CTL_CLK_MASK;
+
+ control_set |= (((i2s_channels - 1) <<
+ IMG_I2S_OUT_CTL_ACTIVE_CHAN_SHIFT) &
+ IMG_I2S_OUT_CTL_ACTIVE_CHAN_MASK);
+
+ control_mask = ~IMG_I2S_OUT_CTL_CLK_MASK &
+ ~IMG_I2S_OUT_CTL_ACTIVE_CHAN_MASK;
+
+ control_reg = img_i2s_out_disable(i2s);
+ control_reg = (control_reg & control_mask) | control_set;
+ img_i2s_out_writel(i2s, control_reg, IMG_I2S_OUT_CTL);
+
+ for (i = 0; i < i2s_channels; i++) {
+ reg = img_i2s_out_ch_readl(i2s, i, IMG_I2S_OUT_CH_CTL);
+ img_i2s_out_ch_enable(i2s, i, reg);
+ }
+
+ for (; i < i2s->max_i2s_chan; i++)
+ img_i2s_out_ch_disable(i2s, i);
+
+ img_i2s_out_enable(i2s, control_reg);
+
+ i2s->active_channels = i2s_channels;
+
+ return 0;
+}
+
+static int img_i2s_out_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct img_i2s_out *i2s = snd_soc_dai_get_drvdata(dai);
+ int i, ret = 0;
+ bool force_clk_active;
+ u32 chan_control_mask, control_mask, chan_control_set = 0;
+ u32 reg, control_reg, control_set = 0;
+
+ force_clk_active = ((fmt & SND_SOC_DAIFMT_CLOCK_MASK) ==
+ SND_SOC_DAIFMT_CONT);
+
+ if (force_clk_active)
+ control_set |= IMG_I2S_OUT_CTL_CLK_EN_MASK;
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ break;
+ case SND_SOC_DAIFMT_CBS_CFS:
+ control_set |= IMG_I2S_OUT_CTL_MASTER_MASK;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ control_set |= IMG_I2S_OUT_CTL_BCLK_POL_MASK;
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ control_set |= IMG_I2S_OUT_CTL_BCLK_POL_MASK;
+ control_set |= IMG_I2S_OUT_CTL_FRM_CLK_POL_MASK;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ control_set |= IMG_I2S_OUT_CTL_FRM_CLK_POL_MASK;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ chan_control_set |= IMG_I2S_OUT_CHAN_CTL_CLKT_MASK;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ control_mask = ~IMG_I2S_OUT_CTL_CLK_EN_MASK &
+ ~IMG_I2S_OUT_CTL_MASTER_MASK &
+ ~IMG_I2S_OUT_CTL_BCLK_POL_MASK &
+ ~IMG_I2S_OUT_CTL_FRM_CLK_POL_MASK;
+
+ chan_control_mask = ~IMG_I2S_OUT_CHAN_CTL_CLKT_MASK;
+
+ control_reg = img_i2s_out_disable(i2s);
+ control_reg = (control_reg & control_mask) | control_set;
+ img_i2s_out_writel(i2s, control_reg, IMG_I2S_OUT_CTL);
+
+ for (i = 0; i < i2s->active_channels; i++) {
+ reg = img_i2s_out_ch_disable(i2s, i);
+ reg = (reg & chan_control_mask) | chan_control_set;
+ img_i2s_out_ch_writel(i2s, i, reg, IMG_I2S_OUT_CH_CTL);
+ img_i2s_out_ch_enable(i2s, i, reg);
+ }
+
+ for (; i < i2s->max_i2s_chan; i++)
+ img_i2s_out_ch_writel(i2s, i, reg, IMG_I2S_OUT_CH_CTL);
+
+ img_i2s_out_enable(i2s, control_reg);
+
+ i2s->force_clk_active = force_clk_active;
+
+ return ret;
+}
+
+static const struct snd_soc_dai_ops img_i2s_out_dai_ops = {
+ .trigger = img_i2s_out_trigger,
+ .hw_params = img_i2s_out_hw_params,
+ .set_fmt = img_i2s_out_set_fmt
+};
+
+static int img_i2s_out_dai_probe(struct snd_soc_dai *dai)
+{
+ struct img_i2s_out *i2s = snd_soc_dai_get_drvdata(dai);
+
+ snd_soc_dai_init_dma_data(dai, &i2s->dma_data, NULL);
+
+ return 0;
+}
+
+static const struct snd_soc_component_driver img_i2s_out_component = {
+ .name = "img-i2s-out"
+};
+
+static int img_i2s_out_dma_prepare_slave_config(struct snd_pcm_substream *st,
+ struct snd_pcm_hw_params *params, struct dma_slave_config *sc)
+{
+ unsigned int i2s_channels = params_channels(params) / 2;
+ struct snd_soc_pcm_runtime *rtd = st->private_data;
+ struct snd_dmaengine_dai_dma_data *dma_data;
+ int ret;
+
+ dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, st);
+
+ ret = snd_hwparams_to_dma_slave_config(st, params, sc);
+ if (ret)
+ return ret;
+
+ sc->dst_addr = dma_data->addr;
+ sc->dst_addr_width = dma_data->addr_width;
+ sc->dst_maxburst = 4 * i2s_channels;
+
+ return 0;
+}
+
+static const struct snd_dmaengine_pcm_config img_i2s_out_dma_config = {
+ .prepare_slave_config = img_i2s_out_dma_prepare_slave_config
+};
+
+static int img_i2s_out_probe(struct platform_device *pdev)
+{
+ struct img_i2s_out *i2s;
+ struct resource *res;
+ void __iomem *base;
+ int i, ret;
+ unsigned int max_i2s_chan_pow_2;
+ u32 reg;
+
+ i2s = devm_kzalloc(&pdev->dev, sizeof(*i2s), GFP_KERNEL);
+ if (!i2s)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, i2s);
+
+ i2s->dev = &pdev->dev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ i2s->base = base;
+
+ if (of_property_read_u32(pdev->dev.of_node, "img,i2s-channels",
+ &i2s->max_i2s_chan)) {
+ dev_err(&pdev->dev, "No img,i2s-channels property\n");
+ return -EINVAL;
+ }
+
+ max_i2s_chan_pow_2 = 1 << get_count_order(i2s->max_i2s_chan);
+
+ i2s->channel_base = base + (max_i2s_chan_pow_2 * 0x20);
+
+ i2s->rst = devm_reset_control_get(&pdev->dev, "rst");
+ if (IS_ERR(i2s->rst)) {
+ dev_err(&pdev->dev, "No top level reset found\n");
+ return PTR_ERR(i2s->rst);
+ }
+
+ i2s->clk_sys = devm_clk_get(&pdev->dev, "sys");
+ if (IS_ERR(i2s->clk_sys))
+ return PTR_ERR(i2s->clk_sys);
+
+ i2s->clk_ref = devm_clk_get(&pdev->dev, "ref");
+ if (IS_ERR(i2s->clk_ref))
+ return PTR_ERR(i2s->clk_ref);
+
+ ret = clk_prepare_enable(i2s->clk_sys);
+ if (ret)
+ return ret;
+
+ reg = IMG_I2S_OUT_CTL_FRM_SIZE_MASK;
+ img_i2s_out_writel(i2s, reg, IMG_I2S_OUT_CTL);
+
+ reg = IMG_I2S_OUT_CHAN_CTL_JUST_MASK |
+ IMG_I2S_OUT_CHAN_CTL_LT_MASK |
+ IMG_I2S_OUT_CHAN_CTL_CH_MASK |
+ (8 << IMG_I2S_OUT_CHAN_CTL_FMT_SHIFT);
+
+ for (i = 0; i < i2s->max_i2s_chan; i++)
+ img_i2s_out_ch_writel(i2s, i, reg, IMG_I2S_OUT_CH_CTL);
+
+ img_i2s_out_reset(i2s);
+
+ pm_runtime_enable(&pdev->dev);
+ if (!pm_runtime_enabled(&pdev->dev)) {
+ ret = img_i2s_out_resume(&pdev->dev);
+ if (ret)
+ goto err_pm_disable;
+ }
+
+ i2s->active_channels = 1;
+ i2s->dma_data.addr = res->start + IMG_I2S_OUT_TX_FIFO;
+ i2s->dma_data.addr_width = 4;
+ i2s->dma_data.maxburst = 4;
+
+ i2s->dai_driver.probe = img_i2s_out_dai_probe;
+ i2s->dai_driver.playback.channels_min = 2;
+ i2s->dai_driver.playback.channels_max = i2s->max_i2s_chan * 2;
+ i2s->dai_driver.playback.rates = SNDRV_PCM_RATE_8000_192000;
+ i2s->dai_driver.playback.formats = SNDRV_PCM_FMTBIT_S32_LE;
+ i2s->dai_driver.ops = &img_i2s_out_dai_ops;
+
+ ret = devm_snd_soc_register_component(&pdev->dev,
+ &img_i2s_out_component, &i2s->dai_driver, 1);
+ if (ret)
+ goto err_suspend;
+
+ ret = devm_snd_dmaengine_pcm_register(&pdev->dev,
+ &img_i2s_out_dma_config, 0);
+ if (ret)
+ goto err_suspend;
+
+ return 0;
+
+err_suspend:
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ img_i2s_out_suspend(&pdev->dev);
+err_pm_disable:
+ pm_runtime_disable(&pdev->dev);
+ clk_disable_unprepare(i2s->clk_sys);
+
+ return ret;
+}
+
+static int img_i2s_out_dev_remove(struct platform_device *pdev)
+{
+ struct img_i2s_out *i2s = platform_get_drvdata(pdev);
+
+ pm_runtime_disable(&pdev->dev);
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ img_i2s_out_suspend(&pdev->dev);
+
+ clk_disable_unprepare(i2s->clk_sys);
+
+ return 0;
+}
+
+static const struct of_device_id img_i2s_out_of_match[] = {
+ { .compatible = "img,i2s-out" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, img_i2s_out_of_match);
+
+static const struct dev_pm_ops img_i2s_out_pm_ops = {
+ SET_RUNTIME_PM_OPS(img_i2s_out_suspend,
+ img_i2s_out_resume, NULL)
+};
+
+static struct platform_driver img_i2s_out_driver = {
+ .driver = {
+ .name = "img-i2s-out",
+ .of_match_table = img_i2s_out_of_match,
+ .pm = &img_i2s_out_pm_ops
+ },
+ .probe = img_i2s_out_probe,
+ .remove = img_i2s_out_dev_remove
+};
+module_platform_driver(img_i2s_out_driver);
+
+MODULE_AUTHOR("Damien Horsley <Damien.Horsley@imgtec.com>");
+MODULE_DESCRIPTION("IMG I2S Output Driver");
+MODULE_LICENSE("GPL v2");
--
2.1.4
^ permalink raw reply related [flat|nested] 17+ messages in thread* [PATCH 05/10] ASoC: img: Add binding document for parallel output controller
2015-09-30 15:08 [PATCH 00/10] Add support for Imagination Technologies audio controllers Damien Horsley
` (3 preceding siblings ...)
2015-09-30 15:08 ` [PATCH 04/10] ASoC: img: Add driver " Damien Horsley
@ 2015-09-30 15:08 ` Damien Horsley
2015-09-30 15:08 ` [PATCH 06/10] ASoC: img: Add driver " Damien Horsley
` (4 subsequent siblings)
9 siblings, 0 replies; 17+ messages in thread
From: Damien Horsley @ 2015-09-30 15:08 UTC (permalink / raw)
To: alsa-devel
Cc: Mark Rutland, devicetree, Pawel Moll, Ian Campbell, linux-kernel,
Mark Brown, Takashi Iwai, Liam Girdwood, Rob Herring, Kumar Gala,
Damien.Horsley
From: "Damien.Horsley" <Damien.Horsley@imgtec.com>
Add binding document for Imagination Technologies parallel
output controller
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
---
.../devicetree/bindings/sound/img,parallel-out.txt | 44 ++++++++++++++++++++++
1 file changed, 44 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/img,parallel-out.txt
diff --git a/Documentation/devicetree/bindings/sound/img,parallel-out.txt b/Documentation/devicetree/bindings/sound/img,parallel-out.txt
new file mode 100644
index 0000000..a3015d2
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/img,parallel-out.txt
@@ -0,0 +1,44 @@
+Imagination Technologies Parallel Output Controller
+
+Required Properties:
+
+ - compatible : Compatible list, must contain "img,parallel-out".
+
+ - #sound-dai-cells : Must be equal to 0
+
+ - reg : Offset and length of the register set for the device.
+
+ - dmas: Contains an entry for each entry in dma-names.
+
+ - dma-names: Must include the following entry:
+ "tx"
+
+ - clocks : Contains an entry for each entry in clock-names.
+
+ - clock-names : Includes the following entries:
+ "sys" The system clock
+ "ref" The reference clock
+
+ - resets: Contains a phandle to the parallel out reset signal
+
+ - reset-names: Contains the reset signal name "rst"
+
+Optional Properties:
+
+ - interrupts : Contains the parallel out interrupt, if present
+
+Example:
+
+parallel_out: parallel-out@18100C00 {
+ compatible = "img,parallel-out";
+ reg = <0x18100C00 0x100>;
+ interrupts = <GIC_SHARED 19 IRQ_TYPE_LEVEL_HIGH>;
+ dmas = <&mdc 16 0xffffffff 0>;
+ dma-names = "tx";
+ clocks = <&cr_periph SYS_CLK_PAUD_OUT>,
+ <&clk_core CLK_AUDIO_DAC>;
+ clock-names = "sys", "ref";
+ resets = <&pistachio_reset PISTACHIO_RESET_PRL_OUT>;
+ reset-names = "rst";
+ #sound-dai-cells = <0>;
+};
--
2.1.4
^ permalink raw reply related [flat|nested] 17+ messages in thread* [PATCH 06/10] ASoC: img: Add driver for parallel output controller
2015-09-30 15:08 [PATCH 00/10] Add support for Imagination Technologies audio controllers Damien Horsley
` (4 preceding siblings ...)
2015-09-30 15:08 ` [PATCH 05/10] ASoC: img: Add binding document for parallel " Damien Horsley
@ 2015-09-30 15:08 ` Damien Horsley
[not found] ` <1443625696-29296-7-git-send-email-Damien.Horsley-1AXoQHu6uovQT0dZR+AlfA@public.gmane.org>
2015-09-30 15:08 ` [PATCH 07/10] ASoC: img: Add binding document for SPDIF input controller Damien Horsley
` (3 subsequent siblings)
9 siblings, 1 reply; 17+ messages in thread
From: Damien Horsley @ 2015-09-30 15:08 UTC (permalink / raw)
To: alsa-devel
Cc: Mark Rutland, devicetree, Pawel Moll, Ian Campbell, linux-kernel,
Mark Brown, Takashi Iwai, Liam Girdwood, Rob Herring, Kumar Gala,
Damien.Horsley
From: "Damien.Horsley" <Damien.Horsley@imgtec.com>
Add driver for Imagination Technologies parallel output
controller
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
---
sound/soc/img/Kconfig | 8 +
sound/soc/img/Makefile | 1 +
sound/soc/img/img-parallel-out.c | 372 +++++++++++++++++++++++++++++++++++++++
3 files changed, 381 insertions(+)
create mode 100644 sound/soc/img/img-parallel-out.c
diff --git a/sound/soc/img/Kconfig b/sound/soc/img/Kconfig
index fe83c8e..3bb507e 100644
--- a/sound/soc/img/Kconfig
+++ b/sound/soc/img/Kconfig
@@ -18,3 +18,11 @@ config SND_SOC_IMG_I2S_OUT
help
Say Y or M if you want to add support for I2S out driver for
Imagination Technologies I2S out device.
+
+config SND_SOC_IMG_PARALLEL_OUT
+ tristate "Imagination Parallel Output Device Driver"
+ depends on SND_SOC_IMG
+ select SND_SOC_GENERIC_DMAENGINE_PCM
+ help
+ Say Y or M if you want to add support for parallel out driver for
+ Imagination Technologies parallel out device.
diff --git a/sound/soc/img/Makefile b/sound/soc/img/Makefile
index c41a4af..da89763 100644
--- a/sound/soc/img/Makefile
+++ b/sound/soc/img/Makefile
@@ -1,2 +1,3 @@
obj-$(CONFIG_SND_SOC_IMG_I2S_IN) += img-i2s-in.o
obj-$(CONFIG_SND_SOC_IMG_I2S_OUT) += img-i2s-out.o
+obj-$(CONFIG_SND_SOC_IMG_PARALLEL_OUT) += img-parallel-out.o
diff --git a/sound/soc/img/img-parallel-out.c b/sound/soc/img/img-parallel-out.c
new file mode 100644
index 0000000..44a61ec
--- /dev/null
+++ b/sound/soc/img/img-parallel-out.c
@@ -0,0 +1,372 @@
+/*
+ * IMG parallel output controller driver
+ *
+ * Copyright (C) 2015 Imagination Technologies Ltd.
+ *
+ * Author: Damien Horsley <Damien.Horsley@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/reset.h>
+
+#include <sound/core.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#define IMG_PRL_OUT_TX_FIFO 0
+
+#define IMG_PRL_OUT_CTL 0x4
+#define IMG_PRL_OUT_CTL_CH_MASK BIT(4)
+#define IMG_PRL_OUT_CTL_PACKH_MASK BIT(3)
+#define IMG_PRL_OUT_CTL_EDGE_MASK BIT(2)
+#define IMG_PRL_OUT_CTL_ME_MASK BIT(1)
+#define IMG_PRL_OUT_CTL_SRST_MASK BIT(0)
+
+static const char *const img_prl_out_edge_names[] = { "Rising", "Falling" };
+
+struct img_prl_out {
+ spinlock_t lock;
+ void __iomem *base;
+ struct clk *clk_sys;
+ struct clk *clk_ref;
+ struct snd_dmaengine_dai_dma_data dma_data;
+ struct device *dev;
+ bool active;
+ struct reset_control *rst;
+};
+
+static int img_prl_out_suspend(struct device *dev)
+{
+ struct img_prl_out *prl = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(prl->clk_ref);
+
+ return 0;
+}
+
+static int img_prl_out_resume(struct device *dev)
+{
+ struct img_prl_out *prl = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(prl->clk_ref);
+ if (ret) {
+ dev_err(dev, "clk_enable failed: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static inline void img_prl_out_writel(struct img_prl_out *prl,
+ u32 val, u32 reg)
+{
+ writel(val, prl->base + reg);
+}
+
+static inline u32 img_prl_out_readl(struct img_prl_out *prl, u32 reg)
+{
+ return readl(prl->base + reg);
+}
+
+static void img_prl_out_reset(struct img_prl_out *prl)
+{
+ u32 ctl;
+
+ ctl = img_prl_out_readl(prl, IMG_PRL_OUT_CTL) &
+ ~IMG_PRL_OUT_CTL_ME_MASK;
+
+ reset_control_assert(prl->rst);
+ reset_control_deassert(prl->rst);
+
+ img_prl_out_writel(prl, ctl, IMG_PRL_OUT_CTL);
+}
+
+static int img_prl_out_edge_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ return snd_ctl_enum_info(uinfo, 1, 2, img_prl_out_edge_names);
+}
+
+static int img_prl_out_get_edge(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct img_prl_out *prl = snd_soc_dai_get_drvdata(cpu_dai);
+ u32 reg;
+ unsigned long flags;
+
+ spin_lock_irqsave(&prl->lock, flags);
+ reg = img_prl_out_readl(prl, IMG_PRL_OUT_CTL);
+ ucontrol->value.integer.value[0] = !!(reg & IMG_PRL_OUT_CTL_EDGE_MASK);
+ spin_unlock_irqrestore(&prl->lock, flags);
+
+ return 0;
+}
+
+static int img_prl_out_set_edge(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct img_prl_out *prl = snd_soc_dai_get_drvdata(cpu_dai);
+ unsigned long flags;
+ int ret = 0;
+ u32 reg;
+
+ spin_lock_irqsave(&prl->lock, flags);
+ if (prl->active) {
+ ret = -EBUSY;
+ } else {
+ reg = img_prl_out_readl(prl, IMG_PRL_OUT_CTL);
+ if (ucontrol->value.integer.value[0])
+ reg |= IMG_PRL_OUT_CTL_EDGE_MASK;
+ else
+ reg &= ~IMG_PRL_OUT_CTL_EDGE_MASK;
+ img_prl_out_writel(prl, reg, IMG_PRL_OUT_CTL);
+ }
+ spin_unlock_irqrestore(&prl->lock, flags);
+
+ return ret;
+}
+
+static struct snd_kcontrol_new img_prl_out_controls[] = {
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = "Parallel Out Edge Falling",
+ .info = img_prl_out_edge_info,
+ .get = img_prl_out_get_edge,
+ .put = img_prl_out_set_edge
+ }
+};
+
+static int img_prl_out_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct img_prl_out *prl = snd_soc_dai_get_drvdata(dai);
+ unsigned long flags;
+ int ret = 0;
+ u32 reg;
+
+ spin_lock_irqsave(&prl->lock, flags);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ reg = img_prl_out_readl(prl, IMG_PRL_OUT_CTL);
+ reg |= IMG_PRL_OUT_CTL_ME_MASK;
+ img_prl_out_writel(prl, reg, IMG_PRL_OUT_CTL);
+ prl->active = true;
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ img_prl_out_reset(prl);
+ prl->active = false;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ spin_unlock_irqrestore(&prl->lock, flags);
+
+ return ret;
+}
+
+static int img_prl_out_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+ struct img_prl_out *prl = snd_soc_dai_get_drvdata(dai);
+ unsigned int rate, format, channels;
+ u32 reg, reg_set = 0;
+ unsigned long flags;
+
+ rate = params_rate(params);
+ format = params_format(params);
+ channels = params_channels(params);
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S32_LE:
+ reg_set |= IMG_PRL_OUT_CTL_PACKH_MASK;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (channels != 2)
+ return -EINVAL;
+
+ clk_set_rate(prl->clk_ref, rate * 256);
+
+ spin_lock_irqsave(&prl->lock, flags);
+ reg = img_prl_out_readl(prl, IMG_PRL_OUT_CTL);
+ reg = (reg & ~IMG_PRL_OUT_CTL_PACKH_MASK) | reg_set;
+ img_prl_out_writel(prl, reg, IMG_PRL_OUT_CTL);
+ spin_unlock_irqrestore(&prl->lock, flags);
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops img_prl_out_dai_ops = {
+ .trigger = img_prl_out_trigger,
+ .hw_params = img_prl_out_hw_params
+};
+
+static int img_prl_out_dai_probe(struct snd_soc_dai *dai)
+{
+ struct img_prl_out *prl = snd_soc_dai_get_drvdata(dai);
+
+ snd_soc_dai_init_dma_data(dai, &prl->dma_data, NULL);
+
+ snd_soc_add_dai_controls(dai, img_prl_out_controls,
+ ARRAY_SIZE(img_prl_out_controls));
+
+ return 0;
+}
+
+static struct snd_soc_dai_driver img_prl_out_dai = {
+ .probe = img_prl_out_dai_probe,
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S24_LE
+ },
+ .ops = &img_prl_out_dai_ops
+};
+
+static const struct snd_soc_component_driver img_prl_out_component = {
+ .name = "img-prl-out"
+};
+
+static int img_prl_out_probe(struct platform_device *pdev)
+{
+ struct img_prl_out *prl;
+ struct resource *res;
+ void __iomem *base;
+ int ret;
+
+ prl = devm_kzalloc(&pdev->dev, sizeof(*prl), GFP_KERNEL);
+ if (!prl)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, prl);
+
+ prl->dev = &pdev->dev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ prl->base = base;
+
+ prl->rst = devm_reset_control_get(&pdev->dev, "rst");
+ if (IS_ERR(prl->rst)) {
+ dev_err(&pdev->dev, "No top level reset found\n");
+ return PTR_ERR(prl->rst);
+ }
+
+ prl->clk_sys = devm_clk_get(&pdev->dev, "sys");
+ if (IS_ERR(prl->clk_sys))
+ return PTR_ERR(prl->clk_sys);
+
+ prl->clk_ref = devm_clk_get(&pdev->dev, "ref");
+ if (IS_ERR(prl->clk_ref))
+ return PTR_ERR(prl->clk_ref);
+
+ ret = clk_prepare_enable(prl->clk_sys);
+ if (ret)
+ return ret;
+
+ img_prl_out_writel(prl, IMG_PRL_OUT_CTL_EDGE_MASK, IMG_PRL_OUT_CTL);
+ img_prl_out_reset(prl);
+
+ pm_runtime_enable(&pdev->dev);
+ if (!pm_runtime_enabled(&pdev->dev)) {
+ ret = img_prl_out_resume(&pdev->dev);
+ if (ret)
+ goto err_pm_disable;
+ }
+
+ spin_lock_init(&prl->lock);
+
+ prl->dma_data.addr = res->start + IMG_PRL_OUT_TX_FIFO;
+ prl->dma_data.addr_width = 4;
+ prl->dma_data.maxburst = 4;
+
+ ret = devm_snd_soc_register_component(&pdev->dev,
+ &img_prl_out_component,
+ &img_prl_out_dai, 1);
+ if (ret)
+ goto err_suspend;
+
+ ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+ if (ret)
+ goto err_suspend;
+
+ return 0;
+
+err_suspend:
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ img_prl_out_suspend(&pdev->dev);
+err_pm_disable:
+ pm_runtime_disable(&pdev->dev);
+ clk_disable_unprepare(prl->clk_sys);
+
+ return ret;
+}
+
+static int img_prl_out_dev_remove(struct platform_device *pdev)
+{
+ struct img_prl_out *prl = platform_get_drvdata(pdev);
+
+ pm_runtime_disable(&pdev->dev);
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ img_prl_out_suspend(&pdev->dev);
+
+ clk_disable_unprepare(prl->clk_sys);
+
+ return 0;
+}
+
+static const struct of_device_id img_prl_out_of_match[] = {
+ { .compatible = "img,parallel-out" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, img_prl_out_of_match);
+
+static const struct dev_pm_ops img_prl_out_pm_ops = {
+ SET_RUNTIME_PM_OPS(img_prl_out_suspend,
+ img_prl_out_resume, NULL)
+};
+
+static struct platform_driver img_prl_out_driver = {
+ .driver = {
+ .name = "img-parallel-out",
+ .of_match_table = img_prl_out_of_match,
+ .pm = &img_prl_out_pm_ops
+ },
+ .probe = img_prl_out_probe,
+ .remove = img_prl_out_dev_remove
+};
+module_platform_driver(img_prl_out_driver);
+
+MODULE_AUTHOR("Damien Horsley <Damien.Horsley@imgtec.com>");
+MODULE_DESCRIPTION("IMG Parallel Output Driver");
+MODULE_LICENSE("GPL v2");
--
2.1.4
^ permalink raw reply related [flat|nested] 17+ messages in thread* [PATCH 07/10] ASoC: img: Add binding document for SPDIF input controller
2015-09-30 15:08 [PATCH 00/10] Add support for Imagination Technologies audio controllers Damien Horsley
` (5 preceding siblings ...)
2015-09-30 15:08 ` [PATCH 06/10] ASoC: img: Add driver " Damien Horsley
@ 2015-09-30 15:08 ` Damien Horsley
2015-09-30 15:08 ` [PATCH 08/10] ASoC: img: Add driver " Damien Horsley
` (2 subsequent siblings)
9 siblings, 0 replies; 17+ messages in thread
From: Damien Horsley @ 2015-09-30 15:08 UTC (permalink / raw)
To: alsa-devel
Cc: Mark Rutland, devicetree, Pawel Moll, Ian Campbell, linux-kernel,
Mark Brown, Takashi Iwai, Liam Girdwood, Rob Herring, Kumar Gala,
Damien.Horsley
From: "Damien.Horsley" <Damien.Horsley@imgtec.com>
Add binding document for Imagination Technologies SPDIF
input controller
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
---
.../devicetree/bindings/sound/img,spdif-in.txt | 41 ++++++++++++++++++++++
1 file changed, 41 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/img,spdif-in.txt
diff --git a/Documentation/devicetree/bindings/sound/img,spdif-in.txt b/Documentation/devicetree/bindings/sound/img,spdif-in.txt
new file mode 100644
index 0000000..aab9a81
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/img,spdif-in.txt
@@ -0,0 +1,41 @@
+Imagination Technologies SPDIF Input Controller
+
+Required Properties:
+
+ - compatible : Compatible list, must contain "img,spdif-in"
+
+ - #sound-dai-cells : Must be equal to 0
+
+ - reg : Offset and length of the register set for the device
+
+ - dmas: Contains an entry for each entry in dma-names.
+
+ - dma-names: Must include the following entry:
+ "rx"
+
+ - clocks : Contains an entry for each entry in clock-names
+
+ - clock-names : Includes the following entries:
+ "sys" The system clock
+
+Optional Properties:
+
+ - resets: Should contain a phandle to the spdif in reset signal, if any
+
+ - reset-names: Should contain the reset signal name "rst", if a
+ reset phandle is given
+
+ - interrupts : Contains the spdif in interrupt, if present
+
+Example:
+
+spdif_in: spdif-in@18100E00 {
+ compatible = "img,spdif-in";
+ reg = <0x18100E00 0x100>;
+ interrupts = <GIC_SHARED 20 IRQ_TYPE_LEVEL_HIGH>;
+ dmas = <&mdc 15 0xffffffff 0>;
+ dma-names = "rx";
+ clocks = <&cr_periph SYS_CLK_SPDIF_IN>;
+ clock-names = "sys";
+ #sound-dai-cells = <0>;
+};
--
2.1.4
^ permalink raw reply related [flat|nested] 17+ messages in thread* [PATCH 08/10] ASoC: img: Add driver for SPDIF input controller
2015-09-30 15:08 [PATCH 00/10] Add support for Imagination Technologies audio controllers Damien Horsley
` (6 preceding siblings ...)
2015-09-30 15:08 ` [PATCH 07/10] ASoC: img: Add binding document for SPDIF input controller Damien Horsley
@ 2015-09-30 15:08 ` Damien Horsley
2015-09-30 15:53 ` kbuild test robot
2015-09-30 15:08 ` [PATCH 09/10] ASoC: img: Add binding document for SPDIF output controller Damien Horsley
2015-09-30 15:08 ` [PATCH 10/10] ASoC: img: Add driver " Damien Horsley
9 siblings, 1 reply; 17+ messages in thread
From: Damien Horsley @ 2015-09-30 15:08 UTC (permalink / raw)
To: alsa-devel
Cc: Mark Rutland, devicetree, Pawel Moll, Ian Campbell, linux-kernel,
Mark Brown, Takashi Iwai, Liam Girdwood, Rob Herring, Kumar Gala,
Damien.Horsley
From: "Damien.Horsley" <Damien.Horsley@imgtec.com>
Add driver for Imagination Technologies SDPIF input
controller
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
---
sound/soc/img/Kconfig | 8 +
sound/soc/img/Makefile | 1 +
sound/soc/img/img-spdif-in.c | 798 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 807 insertions(+)
create mode 100644 sound/soc/img/img-spdif-in.c
diff --git a/sound/soc/img/Kconfig b/sound/soc/img/Kconfig
index 3bb507e..161ce90 100644
--- a/sound/soc/img/Kconfig
+++ b/sound/soc/img/Kconfig
@@ -26,3 +26,11 @@ config SND_SOC_IMG_PARALLEL_OUT
help
Say Y or M if you want to add support for parallel out driver for
Imagination Technologies parallel out device.
+
+config SND_SOC_IMG_SPDIF_IN
+ tristate "Imagination SPDIF Input Device Driver"
+ depends on SND_SOC_IMG
+ select SND_SOC_GENERIC_DMAENGINE_PCM
+ help
+ Say Y or M if you want to add support for SPDIF input driver for
+ Imagination Technologies SPDIF input device.
diff --git a/sound/soc/img/Makefile b/sound/soc/img/Makefile
index da89763..85ded5e 100644
--- a/sound/soc/img/Makefile
+++ b/sound/soc/img/Makefile
@@ -1,3 +1,4 @@
obj-$(CONFIG_SND_SOC_IMG_I2S_IN) += img-i2s-in.o
obj-$(CONFIG_SND_SOC_IMG_I2S_OUT) += img-i2s-out.o
obj-$(CONFIG_SND_SOC_IMG_PARALLEL_OUT) += img-parallel-out.o
+obj-$(CONFIG_SND_SOC_IMG_SPDIF_IN) += img-spdif-in.o
diff --git a/sound/soc/img/img-spdif-in.c b/sound/soc/img/img-spdif-in.c
new file mode 100644
index 0000000..e86aeea
--- /dev/null
+++ b/sound/soc/img/img-spdif-in.c
@@ -0,0 +1,798 @@
+/*
+ * IMG SPDIF input controller driver
+ *
+ * Copyright (C) 2015 Imagination Technologies Ltd.
+ *
+ * Author: Damien Horsley <Damien.Horsley@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#include <sound/core.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#define IMG_SPDIF_IN_RX_FIFO_OFFSET 0
+
+#define IMG_SPDIF_IN_CTL 0x4
+#define IMG_SPDIF_IN_CTL_LOCKLO_MASK 0xff
+#define IMG_SPDIF_IN_CTL_LOCKLO_SHIFT 0
+#define IMG_SPDIF_IN_CTL_LOCKHI_MASK 0xff00
+#define IMG_SPDIF_IN_CTL_LOCKHI_SHIFT 8
+#define IMG_SPDIF_IN_CTL_TRK_MASK 0xff0000
+#define IMG_SPDIF_IN_CTL_TRK_SHIFT 16
+#define IMG_SPDIF_IN_CTL_SRD_MASK 0x70000000
+#define IMG_SPDIF_IN_CTL_SRD_SHIFT 28
+#define IMG_SPDIF_IN_CTL_SRT_MASK BIT(31)
+
+#define IMG_SPDIF_IN_STATUS 0x8
+#define IMG_SPDIF_IN_STATUS_SAM_MASK 0x7000
+#define IMG_SPDIF_IN_STATUS_SAM_SHIFT 12
+#define IMG_SPDIF_IN_STATUS_LOCK_MASK BIT(15)
+#define IMG_SPDIF_IN_STATUS_LOCK_SHIFT 15
+
+#define IMG_SPDIF_IN_CLKGEN 0x1c
+#define IMG_SPDIF_IN_CLKGEN_NOM_MASK 0x3ff
+#define IMG_SPDIF_IN_CLKGEN_NOM_SHIFT 0
+#define IMG_SPDIF_IN_CLKGEN_HLD_MASK 0x3ff0000
+#define IMG_SPDIF_IN_CLKGEN_HLD_SHIFT 16
+
+#define IMG_SPDIF_IN_CSL 0x20
+
+#define IMG_SPDIF_IN_CSH 0x24
+#define IMG_SPDIF_IN_CSH_MASK 0xff
+#define IMG_SPDIF_IN_CSH_SHIFT 0
+
+#define IMG_SPDIF_IN_SOFT_RESET 0x28
+#define IMG_SPDIF_IN_SOFT_RESET_MASK BIT(0)
+
+#define IMG_SPDIF_IN_ACLKGEN_START 0x2c
+#define IMG_SPDIF_IN_ACLKGEN_NOM_MASK 0x3ff
+#define IMG_SPDIF_IN_ACLKGEN_NOM_SHIFT 0
+#define IMG_SPDIF_IN_ACLKGEN_HLD_MASK 0xffc00
+#define IMG_SPDIF_IN_ACLKGEN_HLD_SHIFT 10
+#define IMG_SPDIF_IN_ACLKGEN_TRK_MASK 0xff00000
+#define IMG_SPDIF_IN_ACLKGEN_TRK_SHIFT 20
+
+#define IMG_SPDIF_IN_NUM_ACLKGEN 4
+
+struct img_spdif_in {
+ spinlock_t lock;
+ void __iomem *base;
+ struct clk *clk_sys;
+ struct snd_dmaengine_dai_dma_data dma_data;
+ struct device *dev;
+ unsigned int trk;
+ bool multi_freq;
+ int lock_acquire;
+ int lock_release;
+ unsigned int single_freq;
+ unsigned int multi_freqs[IMG_SPDIF_IN_NUM_ACLKGEN];
+ bool active;
+
+ /* Write-only registers */
+ unsigned int aclkgen_regs[IMG_SPDIF_IN_NUM_ACLKGEN];
+};
+
+static inline void img_spdif_in_writel(struct img_spdif_in *spdif,
+ u32 val, u32 reg)
+{
+ writel(val, spdif->base + reg);
+}
+
+static inline u32 img_spdif_in_readl(struct img_spdif_in *spdif, u32 reg)
+{
+ return readl(spdif->base + reg);
+}
+
+static inline void img_spdif_in_aclkgen_writel(struct img_spdif_in *spdif,
+ u32 index)
+{
+ img_spdif_in_writel(spdif, spdif->aclkgen_regs[index],
+ IMG_SPDIF_IN_ACLKGEN_START + (index * 0x4));
+}
+
+static int img_spdif_in_check_max_rate(struct img_spdif_in *spdif,
+ unsigned int sample_rate, unsigned long *actual_freq)
+{
+ unsigned long min_freq, freq_t;
+
+ /* Clock rate must be at least 24x the bit rate */
+ min_freq = sample_rate * 2 * 32 * 24;
+
+ freq_t = clk_get_rate(spdif->clk_sys);
+
+ if (freq_t < min_freq)
+ return -EINVAL;
+
+ *actual_freq = freq_t;
+
+ return 0;
+}
+
+static int img_spdif_in_do_clkgen_calc(unsigned int rate, unsigned int *pnom,
+ unsigned int *phld, unsigned long clk_rate)
+{
+ unsigned int ori, nom, hld;
+
+ /*
+ * Calculate oversampling ratio, nominal phase increment and hold
+ * increment for the given rate / frequency
+ */
+
+ if (!rate)
+ return -EINVAL;
+
+ ori = clk_rate / (rate * 64);
+
+ if (!ori)
+ return -EINVAL;
+
+ nom = (4096 / ori) + 1;
+ do
+ hld = 4096 - (--nom * (ori - 1));
+ while (hld < 120);
+
+ *pnom = nom;
+ *phld = hld;
+
+ return 0;
+}
+
+static int img_spdif_in_do_clkgen_single(struct img_spdif_in *spdif,
+ unsigned int rate)
+{
+ unsigned int nom, hld;
+ unsigned long flags, clk_rate;
+ int ret = 0;
+ u32 reg;
+
+ ret = img_spdif_in_check_max_rate(spdif, rate, &clk_rate);
+ if (ret)
+ return ret;
+
+ ret = img_spdif_in_do_clkgen_calc(rate, &nom, &hld, clk_rate);
+ if (ret)
+ return ret;
+
+ reg = (nom << IMG_SPDIF_IN_CLKGEN_NOM_SHIFT) &
+ IMG_SPDIF_IN_CLKGEN_NOM_MASK;
+ reg |= (hld << IMG_SPDIF_IN_CLKGEN_HLD_SHIFT) &
+ IMG_SPDIF_IN_CLKGEN_HLD_MASK;
+
+ spin_lock_irqsave(&spdif->lock, flags);
+
+ if (spdif->active) {
+ spin_unlock_irqrestore(&spdif->lock, flags);
+ return -EBUSY;
+ }
+
+ img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CLKGEN);
+
+ spdif->single_freq = rate;
+
+ spin_unlock_irqrestore(&spdif->lock, flags);
+
+ return 0;
+}
+
+static int img_spdif_in_do_clkgen_multi(struct img_spdif_in *spdif,
+ unsigned int multi_freqs[])
+{
+ unsigned int nom, hld, rate, max_rate = 0;
+ unsigned long flags, clk_rate;
+ int i, ret = 0;
+ u32 reg, trk_reg, temp_regs[IMG_SPDIF_IN_NUM_ACLKGEN];
+
+ for (i = 0; i < IMG_SPDIF_IN_NUM_ACLKGEN; i++)
+ if (multi_freqs[i] > max_rate)
+ max_rate = multi_freqs[i];
+
+ ret = img_spdif_in_check_max_rate(spdif, max_rate, &clk_rate);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < IMG_SPDIF_IN_NUM_ACLKGEN; i++) {
+ rate = multi_freqs[i];
+
+ ret = img_spdif_in_do_clkgen_calc(rate, &nom, &hld, clk_rate);
+ if (ret)
+ return ret;
+
+ reg = (nom << IMG_SPDIF_IN_ACLKGEN_NOM_SHIFT) &
+ IMG_SPDIF_IN_ACLKGEN_NOM_MASK;
+ reg |= (hld << IMG_SPDIF_IN_ACLKGEN_HLD_SHIFT) &
+ IMG_SPDIF_IN_ACLKGEN_HLD_MASK;
+ temp_regs[i] = reg;
+ }
+
+ spin_lock_irqsave(&spdif->lock, flags);
+
+ if (spdif->active) {
+ spin_unlock_irqrestore(&spdif->lock, flags);
+ return -EBUSY;
+ }
+
+ trk_reg = spdif->trk << IMG_SPDIF_IN_ACLKGEN_TRK_SHIFT;
+
+ for (i = 0; i < IMG_SPDIF_IN_NUM_ACLKGEN; i++) {
+ spdif->aclkgen_regs[i] = temp_regs[i] | trk_reg;
+ img_spdif_in_aclkgen_writel(spdif, i);
+ }
+
+ spdif->multi_freq = true;
+ spdif->multi_freqs[0] = multi_freqs[0];
+ spdif->multi_freqs[1] = multi_freqs[1];
+ spdif->multi_freqs[2] = multi_freqs[2];
+ spdif->multi_freqs[3] = multi_freqs[3];
+
+ spin_unlock_irqrestore(&spdif->lock, flags);
+
+ return 0;
+}
+
+static int img_spdif_in_iec958_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+ uinfo->count = 1;
+
+ return 0;
+}
+
+static int img_spdif_in_get_status_mask(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.iec958.status[0] = 0xff;
+ ucontrol->value.iec958.status[1] = 0xff;
+ ucontrol->value.iec958.status[2] = 0xff;
+ ucontrol->value.iec958.status[3] = 0xff;
+ ucontrol->value.iec958.status[4] = 0xff;
+
+ return 0;
+}
+
+static int img_spdif_in_get_status(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
+ u32 reg;
+
+ reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CSL);
+ ucontrol->value.iec958.status[0] = reg & 0xff;
+ ucontrol->value.iec958.status[1] = (reg >> 8) & 0xff;
+ ucontrol->value.iec958.status[2] = (reg >> 16) & 0xff;
+ ucontrol->value.iec958.status[3] = (reg >> 24) & 0xff;
+ reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CSH);
+ ucontrol->value.iec958.status[4] = (reg & IMG_SPDIF_IN_CSH_MASK)
+ >> IMG_SPDIF_IN_CSH_SHIFT;
+
+ return 0;
+}
+
+static int img_spdif_in_info_multi_freq(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = IMG_SPDIF_IN_NUM_ACLKGEN;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = LONG_MAX;
+
+ return 0;
+}
+
+static int img_spdif_in_get_multi_freq(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
+ unsigned long flags;
+
+ spin_lock_irqsave(&spdif->lock, flags);
+ if (spdif->multi_freq) {
+ ucontrol->value.integer.value[0] = spdif->multi_freqs[0];
+ ucontrol->value.integer.value[1] = spdif->multi_freqs[1];
+ ucontrol->value.integer.value[2] = spdif->multi_freqs[2];
+ ucontrol->value.integer.value[3] = spdif->multi_freqs[3];
+ } else {
+ ucontrol->value.integer.value[0] = 0;
+ ucontrol->value.integer.value[1] = 0;
+ ucontrol->value.integer.value[2] = 0;
+ ucontrol->value.integer.value[3] = 0;
+ }
+ spin_unlock_irqrestore(&spdif->lock, flags);
+
+ return 0;
+}
+
+static int img_spdif_in_set_multi_freq(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
+ unsigned int multi_freqs[IMG_SPDIF_IN_NUM_ACLKGEN];
+ bool multi_freq;
+ unsigned long flags;
+
+ if ((ucontrol->value.integer.value[0] == 0) &&
+ (ucontrol->value.integer.value[1] == 0) &&
+ (ucontrol->value.integer.value[2] == 0) &&
+ (ucontrol->value.integer.value[3] == 0)) {
+ multi_freq = false;
+ } else {
+ multi_freqs[0] = ucontrol->value.integer.value[0];
+ multi_freqs[1] = ucontrol->value.integer.value[1];
+ multi_freqs[2] = ucontrol->value.integer.value[2];
+ multi_freqs[3] = ucontrol->value.integer.value[3];
+ multi_freq = true;
+ }
+
+ if (multi_freq)
+ return img_spdif_in_do_clkgen_multi(spdif, multi_freqs);
+
+ spin_lock_irqsave(&spdif->lock, flags);
+
+ if (spdif->active) {
+ spin_unlock_irqrestore(&spdif->lock, flags);
+ return -EBUSY;
+ }
+
+ spdif->multi_freq = false;
+
+ spin_unlock_irqrestore(&spdif->lock, flags);
+
+ return 0;
+}
+
+static int img_spdif_in_info_lock_freq(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = LONG_MAX;
+
+ return 0;
+}
+
+static int img_spdif_in_get_lock_freq(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *uc)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
+ u32 reg;
+ int i;
+ unsigned long flags;
+
+ spin_lock_irqsave(&spdif->lock, flags);
+
+ reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_STATUS);
+ if (reg & IMG_SPDIF_IN_STATUS_LOCK_MASK) {
+ if (spdif->multi_freq) {
+ i = ((reg & IMG_SPDIF_IN_STATUS_SAM_MASK) >>
+ IMG_SPDIF_IN_STATUS_SAM_SHIFT) - 1;
+ uc->value.integer.value[0] = spdif->multi_freqs[i];
+ } else {
+ uc->value.integer.value[0] = spdif->single_freq;
+ }
+ } else {
+ uc->value.integer.value[0] = 0;
+ }
+
+ spin_unlock_irqrestore(&spdif->lock, flags);
+
+ return 0;
+}
+
+static int img_spdif_in_info_trk(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = 255;
+
+ return 0;
+}
+
+static int img_spdif_in_get_trk(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
+
+ ucontrol->value.integer.value[0] = spdif->trk;
+
+ return 0;
+}
+
+static int img_spdif_in_set_trk(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
+ unsigned long flags;
+ int i;
+ u32 reg;
+
+ spin_lock_irqsave(&spdif->lock, flags);
+
+ if (spdif->active) {
+ spin_unlock_irqrestore(&spdif->lock, flags);
+ return -EBUSY;
+ }
+
+ spdif->trk = ucontrol->value.integer.value[0];
+
+ reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);
+ reg &= ~IMG_SPDIF_IN_CTL_TRK_MASK;
+ reg |= spdif->trk << IMG_SPDIF_IN_CTL_TRK_SHIFT;
+ img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);
+
+ for (i = 0; i < IMG_SPDIF_IN_NUM_ACLKGEN; i++) {
+ spdif->aclkgen_regs[i] = (spdif->aclkgen_regs[i] &
+ ~IMG_SPDIF_IN_ACLKGEN_TRK_MASK) |
+ (spdif->trk << IMG_SPDIF_IN_ACLKGEN_TRK_SHIFT);
+
+ img_spdif_in_aclkgen_writel(spdif, i);
+ }
+
+ spin_unlock_irqrestore(&spdif->lock, flags);
+
+ return 0;
+}
+
+static int img_spdif_in_info_lock(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 1;
+ uinfo->value.integer.min = -128;
+ uinfo->value.integer.max = 127;
+
+ return 0;
+}
+
+static int img_spdif_in_get_lock_acquire(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
+
+ ucontrol->value.integer.value[0] = spdif->lock_acquire;
+
+ return 0;
+}
+
+static int img_spdif_in_set_lock_acquire(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
+ unsigned long flags;
+ u32 reg;
+
+ spin_lock_irqsave(&spdif->lock, flags);
+
+ if (spdif->active) {
+ spin_unlock_irqrestore(&spdif->lock, flags);
+ return -EBUSY;
+ }
+
+ spdif->lock_acquire = ucontrol->value.integer.value[0];
+
+ reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);
+ reg &= ~IMG_SPDIF_IN_CTL_LOCKHI_MASK;
+ reg |= (spdif->lock_acquire << IMG_SPDIF_IN_CTL_LOCKHI_SHIFT) &
+ IMG_SPDIF_IN_CTL_LOCKHI_MASK;
+ img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);
+
+ spin_unlock_irqrestore(&spdif->lock, flags);
+
+ return 0;
+}
+
+static int img_spdif_in_get_lock_release(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
+
+ ucontrol->value.integer.value[0] = spdif->lock_release;
+
+ return 0;
+}
+
+static int img_spdif_in_set_lock_release(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(cpu_dai);
+ unsigned long flags;
+ u32 reg;
+
+ spin_lock_irqsave(&spdif->lock, flags);
+
+ if (spdif->active) {
+ spin_unlock_irqrestore(&spdif->lock, flags);
+ return -EBUSY;
+ }
+
+ spdif->lock_release = ucontrol->value.integer.value[0];
+
+ reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);
+ reg &= ~IMG_SPDIF_IN_CTL_LOCKLO_MASK;
+ reg |= (spdif->lock_release << IMG_SPDIF_IN_CTL_LOCKLO_SHIFT) &
+ IMG_SPDIF_IN_CTL_LOCKLO_MASK;
+ img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);
+
+ spin_unlock_irqrestore(&spdif->lock, flags);
+
+ return 0;
+}
+
+static struct snd_kcontrol_new img_spdif_in_controls[] = {
+ {
+ .access = SNDRV_CTL_ELEM_ACCESS_READ,
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, MASK),
+ .info = img_spdif_in_iec958_info,
+ .get = img_spdif_in_get_status_mask
+ },
+ {
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT),
+ .info = img_spdif_in_iec958_info,
+ .get = img_spdif_in_get_status
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = "SPDIF In Multi Frequency Acquire",
+ .info = img_spdif_in_info_multi_freq,
+ .get = img_spdif_in_get_multi_freq,
+ .put = img_spdif_in_set_multi_freq
+ },
+ {
+ .access = SNDRV_CTL_ELEM_ACCESS_READ |
+ SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = "SPDIF In Lock Frequency",
+ .info = img_spdif_in_info_lock_freq,
+ .get = img_spdif_in_get_lock_freq
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = "SPDIF In Lock TRK",
+ .info = img_spdif_in_info_trk,
+ .get = img_spdif_in_get_trk,
+ .put = img_spdif_in_set_trk
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = "SPDIF In Lock Acquire Threshold",
+ .info = img_spdif_in_info_lock,
+ .get = img_spdif_in_get_lock_acquire,
+ .put = img_spdif_in_set_lock_acquire
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = "SPDIF In Lock Release Threshold",
+ .info = img_spdif_in_info_lock,
+ .get = img_spdif_in_get_lock_release,
+ .put = img_spdif_in_set_lock_release
+ }
+};
+
+static int img_spdif_in_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ unsigned long flags;
+ struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(dai);
+ int ret = 0;
+ u32 reg;
+
+ spin_lock_irqsave(&spdif->lock, flags);
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);
+ if (spdif->multi_freq)
+ reg &= ~IMG_SPDIF_IN_CTL_SRD_MASK;
+ else
+ reg |= (1UL << IMG_SPDIF_IN_CTL_SRD_SHIFT);
+ reg |= IMG_SPDIF_IN_CTL_SRT_MASK;
+ img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);
+ spdif->active = true;
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ reg = img_spdif_in_readl(spdif, IMG_SPDIF_IN_CTL);
+ reg &= ~IMG_SPDIF_IN_CTL_SRT_MASK;
+ img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);
+ spdif->active = false;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ spin_unlock_irqrestore(&spdif->lock, flags);
+
+ return ret;
+}
+
+static int img_spdif_in_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+ struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(dai);
+ unsigned int rate, channels, format;
+
+ rate = params_rate(params);
+ channels = params_channels(params);
+ format = params_format(params);
+
+ if (format != SNDRV_PCM_FORMAT_S32_LE)
+ return -EINVAL;
+
+ if (channels != 2)
+ return -EINVAL;
+
+ return img_spdif_in_do_clkgen_single(spdif, rate);
+}
+
+static const struct snd_soc_dai_ops img_spdif_in_dai_ops = {
+ .trigger = img_spdif_in_trigger,
+ .hw_params = img_spdif_in_hw_params
+};
+
+static int img_spdif_in_dai_probe(struct snd_soc_dai *dai)
+{
+ struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(dai);
+
+ snd_soc_dai_init_dma_data(dai, NULL, &spdif->dma_data);
+
+ snd_soc_add_dai_controls(dai, img_spdif_in_controls,
+ ARRAY_SIZE(img_spdif_in_controls));
+
+ return 0;
+}
+
+static struct snd_soc_dai_driver img_spdif_in_dai = {
+ .probe = img_spdif_in_dai_probe,
+ .capture = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = SNDRV_PCM_FMTBIT_S32_LE
+ },
+ .ops = &img_spdif_in_dai_ops
+};
+
+static const struct snd_soc_component_driver img_spdif_in_component = {
+ .name = "img-spdif-in"
+};
+
+static int img_spdif_in_probe(struct platform_device *pdev)
+{
+ struct img_spdif_in *spdif;
+ struct resource *res;
+ void __iomem *base;
+ int ret;
+ struct reset_control *rst;
+ u32 reg;
+
+ spdif = devm_kzalloc(&pdev->dev, sizeof(*spdif), GFP_KERNEL);
+ if (!spdif)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, spdif);
+
+ spdif->dev = &pdev->dev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ spdif->base = base;
+
+ spdif->clk_sys = devm_clk_get(&pdev->dev, "sys");
+ if (IS_ERR(spdif->clk_sys))
+ return PTR_ERR(spdif->clk_sys);
+
+ ret = clk_prepare_enable(spdif->clk_sys);
+ if (ret)
+ return ret;
+
+ rst = devm_reset_control_get(&pdev->dev, "rst");
+ if (IS_ERR(rst)) {
+ dev_dbg(&pdev->dev,
+ "No top level reset found\n");
+ img_spdif_in_writel(spdif, IMG_SPDIF_IN_SOFT_RESET_MASK,
+ IMG_SPDIF_IN_SOFT_RESET);
+ img_spdif_in_writel(spdif, 0, IMG_SPDIF_IN_SOFT_RESET);
+ } else {
+ reset_control_assert(rst);
+ reset_control_deassert(rst);
+ }
+
+ spin_lock_init(&spdif->lock);
+
+ spdif->dma_data.addr = res->start + IMG_SPDIF_IN_RX_FIFO_OFFSET;
+ spdif->dma_data.addr_width = 4;
+ spdif->dma_data.maxburst = 4;
+ spdif->trk = 0x80;
+ spdif->lock_acquire = 4;
+ spdif->lock_release = -128;
+
+ reg = (spdif->lock_acquire << IMG_SPDIF_IN_CTL_LOCKHI_SHIFT) &
+ IMG_SPDIF_IN_CTL_LOCKHI_MASK;
+ reg |= (spdif->lock_release << IMG_SPDIF_IN_CTL_LOCKLO_SHIFT) &
+ IMG_SPDIF_IN_CTL_LOCKLO_MASK;
+ reg |= (spdif->trk << IMG_SPDIF_IN_CTL_TRK_SHIFT) &
+ IMG_SPDIF_IN_CTL_TRK_MASK;
+ img_spdif_in_writel(spdif, reg, IMG_SPDIF_IN_CTL);
+
+ ret = devm_snd_soc_register_component(&pdev->dev,
+ &img_spdif_in_component, &img_spdif_in_dai, 1);
+ if (ret)
+ goto err_clk_disable;
+
+ ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+ if (ret)
+ goto err_clk_disable;
+
+ return 0;
+
+err_clk_disable:
+ clk_disable_unprepare(spdif->clk_sys);
+
+ return ret;
+}
+
+static int img_spdif_in_dev_remove(struct platform_device *pdev)
+{
+ struct img_spdif_in *spdif = platform_get_drvdata(pdev);
+
+ clk_disable_unprepare(spdif->clk_sys);
+
+ return 0;
+}
+
+static const struct of_device_id img_spdif_in_of_match[] = {
+ { .compatible = "img,spdif-in" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, img_spdif_in_of_match);
+
+static struct platform_driver img_spdif_in_driver = {
+ .driver = {
+ .name = "img-spdif-in",
+ .of_match_table = img_spdif_in_of_match
+ },
+ .probe = img_spdif_in_probe,
+ .remove = img_spdif_in_dev_remove
+};
+module_platform_driver(img_spdif_in_driver);
+
+MODULE_AUTHOR("Damien Horsley <Damien.Horsley@imgtec.com>");
+MODULE_DESCRIPTION("IMG SPDIF Input driver");
+MODULE_LICENSE("GPL v2");
--
2.1.4
^ permalink raw reply related [flat|nested] 17+ messages in thread* Re: [PATCH 08/10] ASoC: img: Add driver for SPDIF input controller
2015-09-30 15:08 ` [PATCH 08/10] ASoC: img: Add driver " Damien Horsley
@ 2015-09-30 15:53 ` kbuild test robot
0 siblings, 0 replies; 17+ messages in thread
From: kbuild test robot @ 2015-09-30 15:53 UTC (permalink / raw)
Cc: Mark Rutland, devicetree, alsa-devel, Pawel Moll, Ian Campbell,
Liam Girdwood, linux-kernel, Rob Herring, Takashi Iwai,
Mark Brown, kbuild-all, Kumar Gala, Damien.Horsley
Hi Damien.Horsley,
[auto build test results on v4.3-rc3 -- if it's inappropriate base, please ignore]
reproduce:
# apt-get install sparse
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
>> sound/soc/img/img-spdif-in.c:650:16: sparse: incorrect type in assignment (different base types)
sound/soc/img/img-spdif-in.c:650:16: expected unsigned int [unsigned] format
sound/soc/img/img-spdif-in.c:650:16: got restricted snd_pcm_format_t
>> sound/soc/img/img-spdif-in.c:652:23: sparse: restricted snd_pcm_format_t degrades to integer
vim +650 sound/soc/img/img-spdif-in.c
644 {
645 struct img_spdif_in *spdif = snd_soc_dai_get_drvdata(dai);
646 unsigned int rate, channels, format;
647
648 rate = params_rate(params);
649 channels = params_channels(params);
> 650 format = params_format(params);
651
> 652 if (format != SNDRV_PCM_FORMAT_S32_LE)
653 return -EINVAL;
654
655 if (channels != 2)
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
^ permalink raw reply [flat|nested] 17+ messages in thread
* [PATCH 09/10] ASoC: img: Add binding document for SPDIF output controller
2015-09-30 15:08 [PATCH 00/10] Add support for Imagination Technologies audio controllers Damien Horsley
` (7 preceding siblings ...)
2015-09-30 15:08 ` [PATCH 08/10] ASoC: img: Add driver " Damien Horsley
@ 2015-09-30 15:08 ` Damien Horsley
2015-09-30 15:08 ` [PATCH 10/10] ASoC: img: Add driver " Damien Horsley
9 siblings, 0 replies; 17+ messages in thread
From: Damien Horsley @ 2015-09-30 15:08 UTC (permalink / raw)
To: alsa-devel
Cc: Mark Rutland, devicetree, Pawel Moll, Ian Campbell, linux-kernel,
Mark Brown, Takashi Iwai, Liam Girdwood, Rob Herring, Kumar Gala,
Damien.Horsley
From: "Damien.Horsley" <Damien.Horsley@imgtec.com>
Add binding document for Imagination Technologies SPDIF
ouput controller
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
---
.../devicetree/bindings/sound/img,spdif-out.txt | 44 ++++++++++++++++++++++
1 file changed, 44 insertions(+)
create mode 100644 Documentation/devicetree/bindings/sound/img,spdif-out.txt
diff --git a/Documentation/devicetree/bindings/sound/img,spdif-out.txt b/Documentation/devicetree/bindings/sound/img,spdif-out.txt
new file mode 100644
index 0000000..470a519
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/img,spdif-out.txt
@@ -0,0 +1,44 @@
+Imagination Technologies SPDIF Output Controller
+
+Required Properties:
+
+ - compatible : Compatible list, must contain "img,spdif-out"
+
+ - #sound-dai-cells : Must be equal to 0
+
+ - reg : Offset and length of the register set for the device
+
+ - dmas: Contains an entry for each entry in dma-names.
+
+ - dma-names: Must include the following entry:
+ "tx"
+
+ - clocks : Contains an entry for each entry in clock-names.
+
+ - clock-names : Includes the following entries:
+ "sys" The system clock
+ "ref" The reference clock
+
+ - resets: Contains a phandle to the spdif out reset signal
+
+ - reset-names: Contains the reset signal name "rst"
+
+Optional Properties:
+
+ - interrupts : Contains the parallel out interrupt, if present
+
+Example:
+
+spdif_out: spdif-out@18100D00 {
+ compatible = "img,spdif-out";
+ reg = <0x18100D00 0x100>;
+ interrupts = <GIC_SHARED 21 IRQ_TYPE_LEVEL_HIGH>;
+ dmas = <&mdc 14 0xffffffff 0>;
+ dma-names = "tx";
+ clocks = <&cr_periph SYS_CLK_SPDIF_OUT>,
+ <&clk_core CLK_SPDIF>;
+ clock-names = "sys", "ref";
+ resets = <&pistachio_reset PISTACHIO_RESET_SPDIF_OUT>;
+ reset-names = "rst";
+ #sound-dai-cells = <0>;
+};
--
2.1.4
^ permalink raw reply related [flat|nested] 17+ messages in thread* [PATCH 10/10] ASoC: img: Add driver for SPDIF output controller
2015-09-30 15:08 [PATCH 00/10] Add support for Imagination Technologies audio controllers Damien Horsley
` (8 preceding siblings ...)
2015-09-30 15:08 ` [PATCH 09/10] ASoC: img: Add binding document for SPDIF output controller Damien Horsley
@ 2015-09-30 15:08 ` Damien Horsley
9 siblings, 0 replies; 17+ messages in thread
From: Damien Horsley @ 2015-09-30 15:08 UTC (permalink / raw)
To: alsa-devel
Cc: Mark Rutland, devicetree, Pawel Moll, Ian Campbell, linux-kernel,
Mark Brown, Takashi Iwai, Liam Girdwood, Rob Herring, Kumar Gala,
Damien.Horsley
From: "Damien.Horsley" <Damien.Horsley@imgtec.com>
Add driver for Imagination Technologies SPDIF output
controller
Signed-off-by: Damien.Horsley <Damien.Horsley@imgtec.com>
---
sound/soc/img/Kconfig | 8 +
sound/soc/img/Makefile | 1 +
sound/soc/img/img-spdif-out.c | 432 ++++++++++++++++++++++++++++++++++++++++++
3 files changed, 441 insertions(+)
create mode 100644 sound/soc/img/img-spdif-out.c
diff --git a/sound/soc/img/Kconfig b/sound/soc/img/Kconfig
index 161ce90..d08537e 100644
--- a/sound/soc/img/Kconfig
+++ b/sound/soc/img/Kconfig
@@ -34,3 +34,11 @@ config SND_SOC_IMG_SPDIF_IN
help
Say Y or M if you want to add support for SPDIF input driver for
Imagination Technologies SPDIF input device.
+
+config SND_SOC_IMG_SPDIF_OUT
+ tristate "Imagination SPDIF Output Device Driver"
+ depends on SND_SOC_IMG
+ select SND_SOC_GENERIC_DMAENGINE_PCM
+ help
+ Say Y or M if you want to add support for SPDIF out driver for
+ Imagination Technologies SPDIF out device.
diff --git a/sound/soc/img/Makefile b/sound/soc/img/Makefile
index 85ded5e..1a44fb4 100644
--- a/sound/soc/img/Makefile
+++ b/sound/soc/img/Makefile
@@ -2,3 +2,4 @@ obj-$(CONFIG_SND_SOC_IMG_I2S_IN) += img-i2s-in.o
obj-$(CONFIG_SND_SOC_IMG_I2S_OUT) += img-i2s-out.o
obj-$(CONFIG_SND_SOC_IMG_PARALLEL_OUT) += img-parallel-out.o
obj-$(CONFIG_SND_SOC_IMG_SPDIF_IN) += img-spdif-in.o
+obj-$(CONFIG_SND_SOC_IMG_SPDIF_OUT) += img-spdif-out.o
diff --git a/sound/soc/img/img-spdif-out.c b/sound/soc/img/img-spdif-out.c
new file mode 100644
index 0000000..efddf5a
--- /dev/null
+++ b/sound/soc/img/img-spdif-out.c
@@ -0,0 +1,432 @@
+/*
+ * IMG SPDIF output controller driver
+ *
+ * Copyright (C) 2015 Imagination Technologies Ltd.
+ *
+ * Author: Damien Horsley <Damien.Horsley@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/reset.h>
+
+#include <sound/core.h>
+#include <sound/dmaengine_pcm.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#define IMG_SPDIF_OUT_TX_FIFO 0x0
+
+#define IMG_SPDIF_OUT_CTL 0x4
+#define IMG_SPDIF_OUT_CTL_FS_MASK BIT(4)
+#define IMG_SPDIF_OUT_CTL_CLK_MASK BIT(2)
+#define IMG_SPDIF_OUT_CTL_SRT_MASK BIT(0)
+
+#define IMG_SPDIF_OUT_CSL 0x14
+
+#define IMG_SPDIF_OUT_CSH_UV 0x18
+#define IMG_SPDIF_OUT_CSH_UV_CSH_SHIFT 0
+#define IMG_SPDIF_OUT_CSH_UV_CSH_MASK 0xff
+
+struct img_spdif_out {
+ spinlock_t lock;
+ void __iomem *base;
+ struct clk *clk_sys;
+ struct clk *clk_ref;
+ struct snd_dmaengine_dai_dma_data dma_data;
+ struct device *dev;
+ struct reset_control *rst;
+};
+
+static int img_spdif_out_suspend(struct device *dev)
+{
+ struct img_spdif_out *spdif = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(spdif->clk_ref);
+
+ return 0;
+}
+
+static int img_spdif_out_resume(struct device *dev)
+{
+ struct img_spdif_out *spdif = dev_get_drvdata(dev);
+ int ret;
+
+ ret = clk_prepare_enable(spdif->clk_ref);
+ if (ret) {
+ dev_err(dev, "clk_enable failed: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static inline void img_spdif_out_writel(struct img_spdif_out *spdif, u32 val,
+ u32 reg)
+{
+ writel(val, spdif->base + reg);
+}
+
+static inline u32 img_spdif_out_readl(struct img_spdif_out *spdif, u32 reg)
+{
+ return readl(spdif->base + reg);
+}
+
+static void img_spdif_out_reset(struct img_spdif_out *spdif)
+{
+ u32 ctl, status_low, status_high;
+
+ ctl = img_spdif_out_readl(spdif, IMG_SPDIF_OUT_CTL) &
+ ~IMG_SPDIF_OUT_CTL_SRT_MASK;
+ status_low = img_spdif_out_readl(spdif, IMG_SPDIF_OUT_CSL);
+ status_high = img_spdif_out_readl(spdif, IMG_SPDIF_OUT_CSH_UV);
+
+ reset_control_assert(spdif->rst);
+ reset_control_deassert(spdif->rst);
+
+ img_spdif_out_writel(spdif, ctl, IMG_SPDIF_OUT_CTL);
+ img_spdif_out_writel(spdif, status_low, IMG_SPDIF_OUT_CSL);
+ img_spdif_out_writel(spdif, status_high, IMG_SPDIF_OUT_CSH_UV);
+}
+
+static int img_spdif_out_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
+ uinfo->count = 1;
+
+ return 0;
+}
+
+static int img_spdif_out_get_status_mask(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ ucontrol->value.iec958.status[0] = 0xff;
+ ucontrol->value.iec958.status[1] = 0xff;
+ ucontrol->value.iec958.status[2] = 0xff;
+ ucontrol->value.iec958.status[3] = 0xff;
+ ucontrol->value.iec958.status[4] = 0xff;
+
+ return 0;
+}
+
+static int img_spdif_out_get_status(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct img_spdif_out *spdif = snd_soc_dai_get_drvdata(cpu_dai);
+ u32 reg;
+ unsigned long flags;
+
+ spin_lock_irqsave(&spdif->lock, flags);
+
+ reg = img_spdif_out_readl(spdif, IMG_SPDIF_OUT_CSL);
+ ucontrol->value.iec958.status[0] = reg & 0xff;
+ ucontrol->value.iec958.status[1] = (reg >> 8) & 0xff;
+ ucontrol->value.iec958.status[2] = (reg >> 16) & 0xff;
+ ucontrol->value.iec958.status[3] = (reg >> 24) & 0xff;
+
+ reg = img_spdif_out_readl(spdif, IMG_SPDIF_OUT_CSH_UV);
+ ucontrol->value.iec958.status[4] =
+ (reg & IMG_SPDIF_OUT_CSH_UV_CSH_MASK) >>
+ IMG_SPDIF_OUT_CSH_UV_CSH_SHIFT;
+
+ spin_unlock_irqrestore(&spdif->lock, flags);
+
+ return 0;
+}
+
+static int img_spdif_out_set_status(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+ struct img_spdif_out *spdif = snd_soc_dai_get_drvdata(cpu_dai);
+ u32 reg;
+ unsigned long flags;
+
+ reg = ((u32)ucontrol->value.iec958.status[3] << 24);
+ reg |= ((u32)ucontrol->value.iec958.status[2] << 16);
+ reg |= ((u32)ucontrol->value.iec958.status[1] << 8);
+ reg |= (u32)ucontrol->value.iec958.status[0];
+
+ spin_lock_irqsave(&spdif->lock, flags);
+
+ img_spdif_out_writel(spdif, reg, IMG_SPDIF_OUT_CSL);
+
+ reg = img_spdif_out_readl(spdif, IMG_SPDIF_OUT_CSH_UV);
+ reg &= ~IMG_SPDIF_OUT_CSH_UV_CSH_MASK;
+ reg |= (u32)ucontrol->value.iec958.status[4] <<
+ IMG_SPDIF_OUT_CSH_UV_CSH_SHIFT;
+ img_spdif_out_writel(spdif, reg, IMG_SPDIF_OUT_CSH_UV);
+
+ spin_unlock_irqrestore(&spdif->lock, flags);
+
+ return 0;
+}
+
+static struct snd_kcontrol_new img_spdif_out_controls[] = {
+ {
+ .access = SNDRV_CTL_ELEM_ACCESS_READ,
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, MASK),
+ .info = img_spdif_out_info,
+ .get = img_spdif_out_get_status_mask
+ },
+ {
+ .iface = SNDRV_CTL_ELEM_IFACE_PCM,
+ .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
+ .info = img_spdif_out_info,
+ .get = img_spdif_out_get_status,
+ .put = img_spdif_out_set_status
+ }
+};
+
+static int img_spdif_out_trigger(struct snd_pcm_substream *substream, int cmd,
+ struct snd_soc_dai *dai)
+{
+ struct img_spdif_out *spdif = snd_soc_dai_get_drvdata(dai);
+ u32 reg;
+ unsigned long flags;
+
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ reg = img_spdif_out_readl(spdif, IMG_SPDIF_OUT_CTL);
+ reg |= IMG_SPDIF_OUT_CTL_SRT_MASK;
+ img_spdif_out_writel(spdif, reg, IMG_SPDIF_OUT_CTL);
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ spin_lock_irqsave(&spdif->lock, flags);
+ img_spdif_out_reset(spdif);
+ spin_unlock_irqrestore(&spdif->lock, flags);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int img_spdif_out_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
+{
+ struct img_spdif_out *spdif = snd_soc_dai_get_drvdata(dai);
+ unsigned int format, channels;
+ long pre_div_a, pre_div_b, diff_a, diff_b, rate, clk_rate;
+ u32 reg;
+
+ rate = params_rate(params);
+ format = params_format(params);
+ channels = params_channels(params);
+
+ dev_dbg(spdif->dev, "hw_params rate %ld channels %u format %u\n",
+ rate, channels, format);
+
+ if (format != SNDRV_PCM_FORMAT_S32_LE)
+ return -EINVAL;
+
+ if (channels != 2)
+ return -EINVAL;
+
+ pre_div_a = clk_round_rate(spdif->clk_ref, rate * 256);
+ if (pre_div_a < 0)
+ return pre_div_a;
+ pre_div_b = clk_round_rate(spdif->clk_ref, rate * 384);
+ if (pre_div_b < 0)
+ return pre_div_b;
+
+ diff_a = abs((pre_div_a / 256) - rate);
+ diff_b = abs((pre_div_b / 384) - rate);
+
+ /* If diffs are equal, use lower clock rate */
+ if (diff_a > diff_b)
+ clk_set_rate(spdif->clk_ref, pre_div_b);
+ else
+ clk_set_rate(spdif->clk_ref, pre_div_a);
+
+ /*
+ * Another driver (eg machine driver) may have rejected the above
+ * change. Get the current rate and set the register bit according to
+ * the new min diff
+ */
+ clk_rate = clk_get_rate(spdif->clk_ref);
+
+ diff_a = abs((clk_rate / 256) - rate);
+ diff_b = abs((clk_rate / 384) - rate);
+
+ reg = img_spdif_out_readl(spdif, IMG_SPDIF_OUT_CTL);
+ if (diff_a <= diff_b)
+ reg &= ~IMG_SPDIF_OUT_CTL_CLK_MASK;
+ else
+ reg |= IMG_SPDIF_OUT_CTL_CLK_MASK;
+ img_spdif_out_writel(spdif, reg, IMG_SPDIF_OUT_CTL);
+
+ return 0;
+}
+
+static const struct snd_soc_dai_ops img_spdif_out_dai_ops = {
+ .trigger = img_spdif_out_trigger,
+ .hw_params = img_spdif_out_hw_params
+};
+
+static int img_spdif_out_dai_probe(struct snd_soc_dai *dai)
+{
+ struct img_spdif_out *spdif = snd_soc_dai_get_drvdata(dai);
+
+ snd_soc_dai_init_dma_data(dai, &spdif->dma_data, NULL);
+
+ snd_soc_add_dai_controls(dai, img_spdif_out_controls,
+ ARRAY_SIZE(img_spdif_out_controls));
+
+ return 0;
+}
+
+static struct snd_soc_dai_driver img_spdif_out_dai = {
+ .probe = img_spdif_out_dai_probe,
+ .playback = {
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .formats = SNDRV_PCM_FMTBIT_S32_LE
+ },
+ .ops = &img_spdif_out_dai_ops
+};
+
+static const struct snd_soc_component_driver img_spdif_out_component = {
+ .name = "img-spdif-out"
+};
+
+static int img_spdif_out_probe(struct platform_device *pdev)
+{
+ struct img_spdif_out *spdif;
+ struct resource *res;
+ void __iomem *base;
+ int ret;
+
+ spdif = devm_kzalloc(&pdev->dev, sizeof(*spdif), GFP_KERNEL);
+ if (!spdif)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, spdif);
+
+ spdif->dev = &pdev->dev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(base))
+ return PTR_ERR(base);
+
+ spdif->base = base;
+
+ spdif->rst = devm_reset_control_get(&pdev->dev, "rst");
+ if (IS_ERR(spdif->rst)) {
+ dev_err(&pdev->dev, "No top level reset found\n");
+ return PTR_ERR(spdif->rst);
+ }
+
+ spdif->clk_sys = devm_clk_get(&pdev->dev, "sys");
+ if (IS_ERR(spdif->clk_sys))
+ return PTR_ERR(spdif->clk_sys);
+
+ spdif->clk_ref = devm_clk_get(&pdev->dev, "ref");
+ if (IS_ERR(spdif->clk_ref))
+ return PTR_ERR(spdif->clk_ref);
+
+ ret = clk_prepare_enable(spdif->clk_sys);
+ if (ret)
+ return ret;
+
+ img_spdif_out_writel(spdif, IMG_SPDIF_OUT_CTL_FS_MASK,
+ IMG_SPDIF_OUT_CTL);
+
+ img_spdif_out_reset(spdif);
+
+ pm_runtime_enable(&pdev->dev);
+ if (!pm_runtime_enabled(&pdev->dev)) {
+ ret = img_spdif_out_resume(&pdev->dev);
+ if (ret)
+ goto err_pm_disable;
+ }
+
+ spin_lock_init(&spdif->lock);
+
+ spdif->dma_data.addr = res->start + IMG_SPDIF_OUT_TX_FIFO;
+ spdif->dma_data.addr_width = 4;
+ spdif->dma_data.maxburst = 4;
+
+ ret = devm_snd_soc_register_component(&pdev->dev,
+ &img_spdif_out_component,
+ &img_spdif_out_dai, 1);
+ if (ret)
+ goto err_suspend;
+
+ ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+ if (ret)
+ goto err_suspend;
+
+ dev_dbg(&pdev->dev, "Probe successful\n");
+
+ return 0;
+
+err_suspend:
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ img_spdif_out_suspend(&pdev->dev);
+err_pm_disable:
+ pm_runtime_disable(&pdev->dev);
+ clk_disable_unprepare(spdif->clk_sys);
+
+ return ret;
+}
+
+static int img_spdif_out_dev_remove(struct platform_device *pdev)
+{
+ struct img_spdif_out *spdif = platform_get_drvdata(pdev);
+
+ pm_runtime_disable(&pdev->dev);
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ img_spdif_out_suspend(&pdev->dev);
+
+ clk_disable_unprepare(spdif->clk_sys);
+
+ return 0;
+}
+
+static const struct of_device_id img_spdif_out_of_match[] = {
+ { .compatible = "img,spdif-out" },
+ {}
+};
+MODULE_DEVICE_TABLE(of, img_spdif_out_of_match);
+
+static const struct dev_pm_ops img_spdif_out_pm_ops = {
+ SET_RUNTIME_PM_OPS(img_spdif_out_suspend,
+ img_spdif_out_resume, NULL)
+};
+
+static struct platform_driver img_spdif_out_driver = {
+ .driver = {
+ .name = "img-spdif-out",
+ .of_match_table = img_spdif_out_of_match,
+ .pm = &img_spdif_out_pm_ops
+ },
+ .probe = img_spdif_out_probe,
+ .remove = img_spdif_out_dev_remove
+};
+module_platform_driver(img_spdif_out_driver);
+
+MODULE_AUTHOR("Damien Horsley <Damien.Horsley@imgtec.com>");
+MODULE_DESCRIPTION("IMG SPDIF Output driver");
+MODULE_LICENSE("GPL v2");
--
2.1.4
^ permalink raw reply related [flat|nested] 17+ messages in thread