[PATCH 0/8] au1xmmc updates #4

[PATCH 0/8] au1xmmc updates #4

[Manuel Lauss]

Hello,

The following set of patches updates the au1xmmc driver with new features
and moves code not belonging to the driver source to MIPS/Alchemy board
files.

I also took the opportunity to clean up the drivers probe() and irq()
handlers to make it a "proper" platform device (patches #1 and #2).

Patches #3, #4 and #6 implement new features, #5 and #7 are cleanups.

The patches are intended to be applied on top of each other, against
current mainline git (2.6.23-rc5+).

Changes since V3:
- previous patches #1 and #2 are dropped since they are already upstream.
  ("Alchemy: export get_au1x00_speed for modules" and
   "Alchemy: dbdma: add API to delete custom DDMA device")

- few additional minor fixes and patches folded into others.

- I'm taking over maintainership of the driver for as long as I have
  hardware to test it on.

Changes since V2:
- address almost all Sergei Shtylyov's comments:
  pb1200/db1200 mmc device registration moved back to original location,
  remove the au1xmmc.h header as part of codingstyle cleanup
  other nits.

- 2 more patches (#8, #9)

Changes since V1:
- fix a bug in patch #6: SDIO irq should be checked for independently
  from other irq events.
- more trivial cleanups

Db1200 users, please test!  I verified the poll timer works on one of
older boards, however since I don't have Db1200 and Pb1200 boards I'm
not sure whether the driver still works with both SD controllers enabled!

Thanks!
	Manuel Lauss

[PATCH 1/8] au1xmmc: remove db1200 board code, rewrite probe.

[Manuel Lauss]

>From 73c332090c720cf35244421a6c4b6c92e21457b7 Mon Sep 17 00:00:00 2001
From: Manuel Lauss <mlau@msc-ge.com>
Date: Wed, 7 May 2008 14:57:01 +0200
Subject: [PATCH] au1xmmc: remove db1200 board code, rewrite probe.

Remove the DB1200 board-specific functions (card present, read-only,
activity LED methods) and instead add platform data which is passed
to the driver.  This also allows for platforms to implement other
carddetect schemes (e.g. dedicated irq) without having to pollute the
driver code.  The poll timer (used for pb1200) is kept for compatibility.

With the board-specific stuff gone, the driver's ->probe() code can be
cleaned up considerably.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
---
 drivers/mmc/host/au1xmmc.c                |  573 +++++++++++++++++------------
 drivers/mmc/host/au1xmmc.h                |    9 +-
 include/asm-mips/mach-au1x00/au1100_mmc.h |   16 +-
 3 files changed, 353 insertions(+), 245 deletions(-)

diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index cc5f7bc..d8776d6 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -41,8 +41,9 @@
 #include <linux/interrupt.h>
 #include <linux/dma-mapping.h>
 #include <linux/scatterlist.h>
-
+#include <linux/leds.h>
 #include <linux/mmc/host.h>
+
 #include <asm/io.h>
 #include <asm/mach-au1x00/au1000.h>
 #include <asm/mach-au1x00/au1xxx_dbdma.h>
@@ -54,6 +55,7 @@
 #define DRIVER_NAME "au1xxx-mmc"
 
 /* Set this to enable special debugging macros */
+/* #define DEBUG */
 
 #ifdef DEBUG
 #define DBG(fmt, idx, args...) printk("au1xx(%d): DEBUG: " fmt, idx, ##args)
@@ -61,32 +63,6 @@
 #define DBG(fmt, idx, args...)
 #endif
 
-const struct {
-	u32 iobase;
-	u32 tx_devid, rx_devid;
-	u16 bcsrpwr;
-	u16 bcsrstatus;
-	u16 wpstatus;
-} au1xmmc_card_table[] = {
-	{ SD0_BASE, DSCR_CMD0_SDMS_TX0, DSCR_CMD0_SDMS_RX0,
-	  BCSR_BOARD_SD0PWR, BCSR_INT_SD0INSERT, BCSR_STATUS_SD0WP },
-#ifndef CONFIG_MIPS_DB1200
-	{ SD1_BASE, DSCR_CMD0_SDMS_TX1, DSCR_CMD0_SDMS_RX1,
-	  BCSR_BOARD_DS1PWR, BCSR_INT_SD1INSERT, BCSR_STATUS_SD1WP }
-#endif
-};
-
-#define AU1XMMC_CONTROLLER_COUNT (ARRAY_SIZE(au1xmmc_card_table))
-
-/* This array stores pointers for the hosts (used by the IRQ handler) */
-struct au1xmmc_host *au1xmmc_hosts[AU1XMMC_CONTROLLER_COUNT];
-static int dma = 1;
-
-#ifdef MODULE
-module_param(dma, bool, 0);
-MODULE_PARM_DESC(dma, "Use DMA engine for data transfers (0 = disabled)");
-#endif
-
 static inline void IRQ_ON(struct au1xmmc_host *host, u32 mask)
 {
 	u32 val = au_readl(HOST_CONFIG(host));
@@ -135,26 +111,33 @@ static inline void SEND_STOP(struct au1xmmc_host *host)
 
 static void au1xmmc_set_power(struct au1xmmc_host *host, int state)
 {
-
-	u32 val = au1xmmc_card_table[host->id].bcsrpwr;
-
-	bcsr->board &= ~val;
-	if (state) bcsr->board |= val;
-
-	au_sync_delay(1);
+	if (host->platdata && host->platdata->set_power)
+		host->platdata->set_power(host->mmc, state);
 }
 
-static inline int au1xmmc_card_inserted(struct au1xmmc_host *host)
+static int au1xmmc_card_inserted(struct au1xmmc_host *host)
 {
-	return (bcsr->sig_status & au1xmmc_card_table[host->id].bcsrstatus)
-		? 1 : 0;
+	int ret;
+
+	if (host->platdata && host->platdata->card_inserted)
+		ret = host->platdata->card_inserted(host->mmc);
+	else
+		ret = 1;	/* assume there is a card */
+
+	return ret;
 }
 
 static int au1xmmc_card_readonly(struct mmc_host *mmc)
 {
 	struct au1xmmc_host *host = mmc_priv(mmc);
-	return (bcsr->status & au1xmmc_card_table[host->id].wpstatus)
-		? 1 : 0;
+	int ret;
+
+	if (host->platdata && host->platdata->card_readonly)
+		ret = host->platdata->card_readonly(mmc);
+	else
+		ret = 0;	/* assume card is read-write */
+
+	return ret;
 }
 
 static void au1xmmc_finish_request(struct au1xmmc_host *host)
@@ -163,7 +146,7 @@ static void au1xmmc_finish_request(struct au1xmmc_host *host)
 	struct mmc_request *mrq = host->mrq;
 
 	host->mrq = NULL;
-	host->flags &= HOST_F_ACTIVE;
+	host->flags &= HOST_F_ACTIVE | HOST_F_DMA;
 
 	host->dma.len = 0;
 	host->dma.dir = 0;
@@ -174,8 +157,6 @@ static void au1xmmc_finish_request(struct au1xmmc_host *host)
 
 	host->status = HOST_S_IDLE;
 
-	bcsr->disk_leds |= (1 << 8);
-
 	mmc_request_done(host->mmc, mrq);
 }
 
@@ -299,11 +280,13 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
 
 	if (!data->error) {
 		if (host->flags & HOST_F_DMA) {
+#ifdef CONFIG_SOC_AU1200	/* DBDMA */
 			u32 chan = DMA_CHANNEL(host);
 
 			chan_tab_t *c = *((chan_tab_t **) chan);
 			au1x_dma_chan_t *cp = c->chan_ptr;
 			data->bytes_xfered = cp->ddma_bytecnt;
+#endif
 		}
 		else
 			data->bytes_xfered =
@@ -420,18 +403,18 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
 			break;
 
 		if (status & SD_STATUS_RC) {
-			DBG("RX CRC Error [%d + %d].\n", host->id,
+			DBG("RX CRC Error [%d + %d].\n", host->pdev->id,
 					host->pio.len, count);
 			break;
 		}
 
 		if (status & SD_STATUS_RO) {
-			DBG("RX Overrun [%d + %d]\n", host->id,
+			DBG("RX Overrun [%d + %d]\n", host->pdev->id,
 					host->pio.len, count);
 			break;
 		}
 		else if (status & SD_STATUS_RU) {
-			DBG("RX Underrun [%d + %d]\n", host->id,
+			DBG("RX Underrun [%d + %d]\n", host->pdev->id,
 					host->pio.len,	count);
 			break;
 		}
@@ -528,6 +511,7 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 	host->status = HOST_S_DATA;
 
 	if (host->flags & HOST_F_DMA) {
+#ifdef CONFIG_SOC_AU1200	/* DBDMA */
 		u32 channel = DMA_CHANNEL(host);
 
 		/* Start the DMA as soon as the buffer gets something in it */
@@ -540,6 +524,7 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 		}
 
 		au1xxx_dbdma_start(channel);
+#endif
 	}
 }
 
@@ -571,12 +556,8 @@ static void au1xmmc_set_clock(struct au1xmmc_host *host, int rate)
 static int
 au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
 {
-
 	int datalen = data->blocks * data->blksz;
 
-	if (dma != 0)
-		host->flags |= HOST_F_DMA;
-
 	if (data->flags & MMC_DATA_READ)
 		host->flags |= HOST_F_RECV;
 	else
@@ -596,6 +577,7 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
 	au_writel(data->blksz - 1, HOST_BLKSIZE(host));
 
 	if (host->flags & HOST_F_DMA) {
+#ifdef CONFIG_SOC_AU1200	/* DBDMA */
 		int i;
 		u32 channel = DMA_CHANNEL(host);
 
@@ -621,11 +603,12 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
 					len, flags);
 			}
 
-    			if (!ret)
+			if (!ret)
 				goto dataerr;
 
 			datalen -= len;
 		}
+#endif
 	}
 	else {
 		host->pio.index = 0;
@@ -641,8 +624,9 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
 
 	return 0;
 
- dataerr:
-	dma_unmap_sg(mmc_dev(host->mmc),data->sg,data->sg_len,host->dma.dir);
+dataerr:
+	dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+			host->dma.dir);
 	return -ETIMEDOUT;
 }
 
@@ -663,8 +647,6 @@ static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq)
 	host->mrq = mrq;
 	host->status = HOST_S_CMD;
 
-	bcsr->disk_leds &= ~(1 << 8);
-
 	if (mrq->data) {
 		FLUSH_FIFO(host);
 		flags = mrq->data->flags;
@@ -728,149 +710,145 @@ static void au1xmmc_set_ios(struct mmc_host* mmc, struct mmc_ios* ios)
 	}
 }
 
-static void au1xmmc_dma_callback(int irq, void *dev_id)
-{
-	struct au1xmmc_host *host = (struct au1xmmc_host *) dev_id;
-
-	/* Avoid spurious interrupts */
-
-	if (!host->mrq)
-		return;
-
-	if (host->flags & HOST_F_STOP)
-		SEND_STOP(host);
-
-	tasklet_schedule(&host->data_task);
-}
-
 #define STATUS_TIMEOUT (SD_STATUS_RAT | SD_STATUS_DT)
 #define STATUS_DATA_IN  (SD_STATUS_NE)
 #define STATUS_DATA_OUT (SD_STATUS_TH)
 
 static irqreturn_t au1xmmc_irq(int irq, void *dev_id)
 {
-
+	struct au1xmmc_host *host = dev_id;
 	u32 status;
-	int i, ret = 0;
-
-	disable_irq(AU1100_SD_IRQ);
 
-	for(i = 0; i < AU1XMMC_CONTROLLER_COUNT; i++) {
-		struct au1xmmc_host * host = au1xmmc_hosts[i];
-		u32 handled = 1;
-
-		status = au_readl(HOST_STATUS(host));
+	status = au_readl(HOST_STATUS(host));
 
-		if (host->mrq && (status & STATUS_TIMEOUT)) {
-			if (status & SD_STATUS_RAT)
-				host->mrq->cmd->error = -ETIMEDOUT;
+	if (!(status & SD_STATUS_I))
+		return IRQ_NONE;	/* not ours */
 
-			else if (status & SD_STATUS_DT)
-				host->mrq->data->error = -ETIMEDOUT;
+	if (host->mrq && (status & STATUS_TIMEOUT)) {
+		if (status & SD_STATUS_RAT)
+			host->mrq->cmd->error = -ETIMEDOUT;
+		else if (status & SD_STATUS_DT)
+			host->mrq->data->error = -ETIMEDOUT;
 
-			/* In PIO mode, interrupts might still be enabled */
-			IRQ_OFF(host, SD_CONFIG_NE | SD_CONFIG_TH);
+		/* In PIO mode, interrupts might still be enabled */
+		IRQ_OFF(host, SD_CONFIG_NE | SD_CONFIG_TH);
 
-			//IRQ_OFF(host, SD_CONFIG_TH|SD_CONFIG_RA|SD_CONFIG_RF);
-			tasklet_schedule(&host->finish_task);
-		}
+		/* IRQ_OFF(host, SD_CONFIG_TH | SD_CONFIG_RA | SD_CONFIG_RF); */
+		tasklet_schedule(&host->finish_task);
+	}
 #if 0
-		else if (status & SD_STATUS_DD) {
-
-			/* Sometimes we get a DD before a NE in PIO mode */
-
-			if (!(host->flags & HOST_F_DMA) &&
-					(status & SD_STATUS_NE))
-				au1xmmc_receive_pio(host);
-			else {
-				au1xmmc_data_complete(host, status);
-				//tasklet_schedule(&host->data_task);
-			}
-		}
-#endif
-		else if (status & (SD_STATUS_CR)) {
-			if (host->status == HOST_S_CMD)
-				au1xmmc_cmd_complete(host,status);
-		}
-		else if (!(host->flags & HOST_F_DMA)) {
-			if ((host->flags & HOST_F_XMIT) &&
-			    (status & STATUS_DATA_OUT))
-				au1xmmc_send_pio(host);
-			else if ((host->flags & HOST_F_RECV) &&
-			    (status & STATUS_DATA_IN))
-				au1xmmc_receive_pio(host);
-		}
-		else if (status & 0x203FBC70) {
-			DBG("Unhandled status %8.8x\n", host->id, status);
-			handled = 0;
+	else if (status & SD_STATUS_DD) {
+		/* Sometimes we get a DD before a NE in PIO mode */
+		if (!(host->flags & HOST_F_DMA) && (status & SD_STATUS_NE))
+			au1xmmc_receive_pio(host);
+		else {
+			au1xmmc_data_complete(host, status);
+			/* tasklet_schedule(&host->data_task); */
 		}
-
-		au_writel(status, HOST_STATUS(host));
-		au_sync();
-
-		ret |= handled;
 	}
-
-	enable_irq(AU1100_SD_IRQ);
-	return ret;
-}
-
-static void au1xmmc_poll_event(unsigned long arg)
-{
-	struct au1xmmc_host *host = (struct au1xmmc_host *) arg;
-
-	int card = au1xmmc_card_inserted(host);
-        int controller = (host->flags & HOST_F_ACTIVE) ? 1 : 0;
-
-	if (card != controller) {
-		host->flags &= ~HOST_F_ACTIVE;
-		if (card) host->flags |= HOST_F_ACTIVE;
-		mmc_detect_change(host->mmc, 0);
+#endif
+	else if (status & SD_STATUS_CR) {
+		if (host->status == HOST_S_CMD)
+			au1xmmc_cmd_complete(host, status);
+
+	} else if (!(host->flags & HOST_F_DMA)) {
+		if ((host->flags & HOST_F_XMIT) && (status & STATUS_DATA_OUT))
+			au1xmmc_send_pio(host);
+		else if ((host->flags & HOST_F_RECV) && (status & STATUS_DATA_IN))
+			au1xmmc_receive_pio(host);
+
+	} else if (status & 0x203F3C70) {
+			DBG("Unhandled status %8.8x\n", host->pdev->id,
+				status);
 	}
 
-	if (host->mrq != NULL) {
-		u32 status = au_readl(HOST_STATUS(host));
-		DBG("PENDING - %8.8x\n", host->id, status);
-	}
+	au_writel(status, HOST_STATUS(host));
+	au_sync();
 
-	mod_timer(&host->timer, jiffies + AU1XMMC_DETECT_TIMEOUT);
+	return IRQ_HANDLED;
 }
 
-static dbdev_tab_t au1xmmc_mem_dbdev =
-{
-	DSCR_CMD0_ALWAYS, DEV_FLAGS_ANYUSE, 0, 8, 0x00000000, 0, 0
+#ifdef CONFIG_SOC_AU1200
+/* 8bit memory DMA device */
+static dbdev_tab_t au1xmmc_mem_dbdev = {
+	.dev_id		= DSCR_CMD0_ALWAYS,
+	.dev_flags	= DEV_FLAGS_ANYUSE,
+	.dev_tsize	= 0,
+	.dev_devwidth	= 8,
+	.dev_physaddr	= 0x00000000,
+	.dev_intlevel	= 0,
+	.dev_intpolarity = 0,
 };
+static int memid;
 
-static void au1xmmc_init_dma(struct au1xmmc_host *host)
+static void au1xmmc_dbdma_callback(int irq, void *dev_id)
 {
+	struct au1xmmc_host *host = (struct au1xmmc_host *)dev_id;
 
-	u32 rxchan, txchan;
+	/* Avoid spurious interrupts */
+	if (!host->mrq)
+		return;
 
-	int txid = au1xmmc_card_table[host->id].tx_devid;
-	int rxid = au1xmmc_card_table[host->id].rx_devid;
+	if (host->flags & HOST_F_STOP)
+		SEND_STOP(host);
 
-	/* DSCR_CMD0_ALWAYS has a stride of 32 bits, we need a stride
-	   of 8 bits.  And since devices are shared, we need to create
-	   our own to avoid freaking out other devices
-	*/
+	tasklet_schedule(&host->data_task);
+}
 
-	int memid = au1xxx_ddma_add_device(&au1xmmc_mem_dbdev);
+static int au1xmmc_dbdma_init(struct au1xmmc_host *host)
+{
+	struct resource *res;
+	int txid, rxid;
+
+	res = platform_get_resource(host->pdev, IORESOURCE_DMA, 0);
+	if (!res)
+		return -ENODEV;
+	txid = res->start;
+
+	res = platform_get_resource(host->pdev, IORESOURCE_DMA, 1);
+	if (!res)
+		return -ENODEV;
+	rxid = res->start;
+
+	if (!memid)
+		return -ENODEV;
+
+	host->tx_chan = au1xxx_dbdma_chan_alloc(memid, txid,
+				au1xmmc_dbdma_callback, (void *)host);
+	if (!host->tx_chan) {
+		dev_err(&host->pdev->dev, "cannot allocate TX DMA\n");
+		return -ENODEV;
+	}
+
+	host->rx_chan = au1xxx_dbdma_chan_alloc(rxid, memid,
+				au1xmmc_dbdma_callback, (void *)host);
+	if (!host->rx_chan) {
+		dev_err(&host->pdev->dev, "cannot allocate RX DMA\n");
+		au1xxx_dbdma_chan_free(host->tx_chan);
+		return -ENODEV;
+	}
 
-	txchan = au1xxx_dbdma_chan_alloc(memid, txid,
-					 au1xmmc_dma_callback, (void *) host);
+	au1xxx_dbdma_set_devwidth(host->tx_chan, 8);
+	au1xxx_dbdma_set_devwidth(host->rx_chan, 8);
 
-	rxchan = au1xxx_dbdma_chan_alloc(rxid, memid,
-					 au1xmmc_dma_callback, (void *) host);
+	au1xxx_dbdma_ring_alloc(host->tx_chan, AU1XMMC_DESCRIPTOR_COUNT);
+	au1xxx_dbdma_ring_alloc(host->rx_chan, AU1XMMC_DESCRIPTOR_COUNT);
 
-	au1xxx_dbdma_set_devwidth(txchan, 8);
-	au1xxx_dbdma_set_devwidth(rxchan, 8);
+	/* DBDMA is good to go */
+	host->flags |= HOST_F_DMA;
 
-	au1xxx_dbdma_ring_alloc(txchan, AU1XMMC_DESCRIPTOR_COUNT);
-	au1xxx_dbdma_ring_alloc(rxchan, AU1XMMC_DESCRIPTOR_COUNT);
+	return 0;
+}
 
-	host->tx_chan = txchan;
-	host->rx_chan = rxchan;
+static void au1xmmc_dbdma_shutdown(struct au1xmmc_host *host)
+{
+	if (host->flags & HOST_F_DMA) {
+		host->flags &= ~HOST_F_DMA;
+		au1xxx_dbdma_chan_free(host->tx_chan);
+		au1xxx_dbdma_chan_free(host->rx_chan);
+	}
 }
+#endif
 
 static const struct mmc_host_ops au1xmmc_ops = {
 	.request	= au1xmmc_request,
@@ -878,116 +856,235 @@ static const struct mmc_host_ops au1xmmc_ops = {
 	.get_ro		= au1xmmc_card_readonly,
 };
 
-static int __devinit au1xmmc_probe(struct platform_device *pdev)
+static void au1xmmc_poll_event(unsigned long arg)
 {
+	struct au1xmmc_host *host = (struct au1xmmc_host *)arg;
+	int card = au1xmmc_card_inserted(host);
+	int controller = (host->flags & HOST_F_ACTIVE) ? 1 : 0;
+
+	if (card != controller) {
+		host->flags &= ~HOST_F_ACTIVE;
+		if (card)
+			host->flags |= HOST_F_ACTIVE;
+		mmc_detect_change(host->mmc, 0);
+	}
 
-	int i, ret = 0;
+#ifdef DEBUG
+	if (host->mrq != NULL) {
+		u32 status = au_readl(HOST_STATUS(host));
+		DBG("PENDING - %8.8x\n", host->pdev->id, status);
+	}
+#endif
+	mod_timer(&host->timer, jiffies + AU1XMMC_DETECT_TIMEOUT);
+}
 
-	/* THe interrupt is shared among all controllers */
-	ret = request_irq(AU1100_SD_IRQ, au1xmmc_irq, IRQF_DISABLED, "MMC", 0);
+static void au1xmmc_init_cd_poll_timer(struct au1xmmc_host *host)
+{
+	init_timer(&host->timer);
+	host->timer.function = au1xmmc_poll_event;
+	host->timer.data = (unsigned long)host;
+	host->timer.expires = jiffies + AU1XMMC_DETECT_TIMEOUT;
+}
 
-	if (ret) {
-		printk(DRIVER_NAME "ERROR: Couldn't get int %d: %d\n",
-				AU1100_SD_IRQ, ret);
-		return -ENXIO;
+static int __devinit au1xmmc_probe(struct platform_device *pdev)
+{
+	struct mmc_host *mmc;
+	struct au1xmmc_host *host;
+	struct resource *r;
+	int ret;
+
+	mmc = mmc_alloc_host(sizeof(struct au1xmmc_host), &pdev->dev);
+	if (!mmc) {
+		dev_err(&pdev->dev, "no memory for mmc_host\n");
+		ret = -ENOMEM;
+		goto out0;
 	}
 
-	disable_irq(AU1100_SD_IRQ);
+	host = mmc_priv(mmc);
+	host->mmc = mmc;
+	host->platdata = pdev->dev.platform_data;
+	host->pdev = pdev;
 
-	for(i = 0; i < AU1XMMC_CONTROLLER_COUNT; i++) {
-		struct mmc_host *mmc = mmc_alloc_host(sizeof(struct au1xmmc_host), &pdev->dev);
-		struct au1xmmc_host *host = 0;
+	ret = -ENODEV;
+	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!r) {
+		dev_err(&pdev->dev, "no mmio defined\n");
+		goto out1;
+	}
 
-		if (!mmc) {
-			printk(DRIVER_NAME "ERROR: no mem for host %d\n", i);
-			au1xmmc_hosts[i] = 0;
-			continue;
-		}
+	host->ioarea = request_mem_region(r->start, r->end - r->start + 1,
+					   pdev->name);
+	if (!host->ioarea) {
+		dev_err(&pdev->dev, "mmio already in use\n");
+		goto out1;
+	}
 
-		mmc->ops = &au1xmmc_ops;
+	host->iobase = (unsigned long)ioremap(r->start, 0x3c);
+	if (!host->iobase) {
+		dev_err(&pdev->dev, "cannot remap mmio\n");
+		goto out2;
+	}
+
+	r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!r) {
+		dev_err(&pdev->dev, "no IRQ defined\n");
+		goto out3;
+	}
 
-		mmc->f_min =   450000;
-		mmc->f_max = 24000000;
+	host->irq = r->start;
+	/* IRQ is shared among both SD controllers */
+	ret = request_irq(host->irq, au1xmmc_irq, IRQF_SHARED,
+			  DRIVER_NAME, host);
+	if (ret) {
+		dev_err(&pdev->dev, "cannot grab IRQ\n");
+		goto out3;
+	}
 
-		mmc->max_seg_size = AU1XMMC_DESCRIPTOR_SIZE;
-		mmc->max_phys_segs = AU1XMMC_DESCRIPTOR_COUNT;
+	mmc->ops = &au1xmmc_ops;
 
-		mmc->max_blk_size = 2048;
-		mmc->max_blk_count = 512;
+	mmc->f_min =   450000;
+	mmc->f_max = 24000000;
 
-		mmc->ocr_avail = AU1XMMC_OCR;
+	mmc->max_seg_size = AU1XMMC_DESCRIPTOR_SIZE;
+	mmc->max_phys_segs = AU1XMMC_DESCRIPTOR_COUNT;
 
-		host = mmc_priv(mmc);
-		host->mmc = mmc;
+	mmc->max_blk_size = 2048;
+	mmc->max_blk_count = 512;
 
-		host->id = i;
-		host->iobase = au1xmmc_card_table[host->id].iobase;
-		host->clock = 0;
-		host->power_mode = MMC_POWER_OFF;
+	mmc->ocr_avail = AU1XMMC_OCR;
+	mmc->caps = 0;
 
-		host->flags = au1xmmc_card_inserted(host) ? HOST_F_ACTIVE : 0;
-		host->status = HOST_S_IDLE;
+	host->status = HOST_S_IDLE;
 
-		init_timer(&host->timer);
+	/* board-specific carddetect setup, if any */
+	if (host->platdata && host->platdata->cd_setup) {
+		ret = host->platdata->cd_setup(mmc, 1);
+		if (ret) {
+			dev_err(&pdev->dev, "board CD setup failed\n");
+			goto out4;
+		}
+	} else {
+		/* poll the board-specific is-card-in-socket-? method */
+		au1xmmc_init_cd_poll_timer(host);
+	}
 
-		host->timer.function = au1xmmc_poll_event;
-		host->timer.data = (unsigned long) host;
-		host->timer.expires = jiffies + AU1XMMC_DETECT_TIMEOUT;
+	tasklet_init(&host->data_task, au1xmmc_tasklet_data,
+			(unsigned long)host);
 
-		tasklet_init(&host->data_task, au1xmmc_tasklet_data,
-				(unsigned long) host);
+	tasklet_init(&host->finish_task, au1xmmc_tasklet_finish,
+			(unsigned long)host);
 
-		tasklet_init(&host->finish_task, au1xmmc_tasklet_finish,
-				(unsigned long) host);
+#ifdef CONFIG_SOC_AU1200
+	ret = au1xmmc_dbdma_init(host);
+	if (ret)
+		printk(KERN_INFO DRIVER_NAME ": DBDMA init failed; using PIO\n");
+#endif
 
-		spin_lock_init(&host->lock);
+#ifdef CONFIG_LEDS_CLASS
+	if (host->platdata && host->platdata->led) {
+		struct led_classdev *led = host->platdata->led;
+		led->name = mmc_hostname(mmc);
+		led->brightness = LED_OFF;
+		led->default_trigger = mmc_hostname(mmc);
+		ret = led_classdev_register(mmc_dev(mmc), led);
+		if (ret)
+			goto out5;
+	}
+#endif
 
-		if (dma != 0)
-			au1xmmc_init_dma(host);
+	au1xmmc_reset_controller(host);
 
-		au1xmmc_reset_controller(host);
+	ret = mmc_add_host(mmc);
+	if (ret) {
+		dev_err(&pdev->dev, "cannot add mmc host\n");
+		goto out6;
+	}
 
-		mmc_add_host(mmc);
-		au1xmmc_hosts[i] = host;
+	platform_set_drvdata(pdev, mmc);
 
+	/* start the carddetect poll timer if necessary */
+	if (!(host->platdata && host->platdata->cd_setup))
 		add_timer(&host->timer);
 
-		printk(KERN_INFO DRIVER_NAME ": MMC Controller %d set up at %8.8X (mode=%s)\n",
-		       host->id, host->iobase, dma ? "dma" : "pio");
-	}
+	printk(KERN_INFO DRIVER_NAME ": MMC Controller %d set up at %8.8X"
+		" (mode=%s)\n", pdev->id, host->iobase,
+		host->flags & HOST_F_DMA ? "dma" : "pio");
 
-	enable_irq(AU1100_SD_IRQ);
+	return 0;	/* all ok */
 
-	return 0;
+out6:
+#ifdef CONFIG_LEDS_CLASS
+	if (host->platdata && host->platdata->led)
+		led_classdev_unregister(host->platdata->led);
+out5:
+#endif
+	au_writel(0, HOST_ENABLE(host));
+	au_writel(0, HOST_CONFIG(host));
+	au_writel(0, HOST_CONFIG2(host));
+	au_sync();
+
+#ifdef CONFIG_SOC_AU1200
+	au1xmmc_dbdma_shutdown(host);
+#endif
+
+	tasklet_kill(&host->data_task);
+	tasklet_kill(&host->finish_task);
+
+	if (host->platdata && host->platdata->cd_setup)
+		host->platdata->cd_setup(mmc, 0);
+out4:
+	free_irq(host->irq, host);
+out3:
+	iounmap((void *)host->iobase);
+out2:
+	release_resource(host->ioarea);
+	kfree(host->ioarea);
+out1:
+	mmc_free_host(mmc);
+out0:
+	return ret;
 }
 
 static int __devexit au1xmmc_remove(struct platform_device *pdev)
 {
+	struct mmc_host *mmc = platform_get_drvdata(pdev);
+	struct au1xmmc_host *host;
+
+	if (mmc) {
+		host  = mmc_priv(mmc);
+
+		mmc_remove_host(mmc);
 
-	int i;
+#ifdef CONFIG_LEDS_CLASS
+		if (host->platdata && host->platdata->led)
+			led_classdev_unregister(host->platdata->led);
+#endif
 
-	disable_irq(AU1100_SD_IRQ);
+		if (host->platdata && host->platdata->cd_setup)
+			host->platdata->cd_setup(mmc, 0);
+		else
+			del_timer_sync(&host->timer);
 
-	for(i = 0; i < AU1XMMC_CONTROLLER_COUNT; i++) {
-		struct au1xmmc_host *host = au1xmmc_hosts[i];
-		if (!host) continue;
+		au_writel(0, HOST_ENABLE(host));
+		au_writel(0, HOST_CONFIG(host));
+		au_writel(0, HOST_CONFIG2(host));
+		au_sync();
 
 		tasklet_kill(&host->data_task);
 		tasklet_kill(&host->finish_task);
 
-		del_timer_sync(&host->timer);
+#ifdef CONFIG_SOC_AU1200
+		au1xmmc_dbdma_shutdown(host);
+#endif
 		au1xmmc_set_power(host, 0);
 
-		mmc_remove_host(host->mmc);
+		free_irq(host->irq, host);
+		iounmap((void *)host->iobase);
+		release_resource(host->ioarea);
+		kfree(host->ioarea);
 
-		au1xxx_dbdma_chan_free(host->tx_chan);
-		au1xxx_dbdma_chan_free(host->rx_chan);
-
-		au_writel(0x0, HOST_ENABLE(host));
-		au_sync();
+		mmc_free_host(mmc);
 	}
-
-	free_irq(AU1100_SD_IRQ, 0);
 	return 0;
 }
 
@@ -1004,21 +1101,31 @@ static struct platform_driver au1xmmc_driver = {
 
 static int __init au1xmmc_init(void)
 {
+#ifdef CONFIG_SOC_AU1200
+	/* DSCR_CMD0_ALWAYS has a stride of 32 bits, we need a stride
+	 * of 8 bits.  And since devices are shared, we need to create
+	 * our own to avoid freaking out other devices.
+	 */
+	memid = au1xxx_ddma_add_device(&au1xmmc_mem_dbdev);
+	if (!memid)
+		printk(KERN_ERR "au1xmmc: cannot add memory dbdma dev\n");
+#endif
 	return platform_driver_register(&au1xmmc_driver);
 }
 
 static void __exit au1xmmc_exit(void)
 {
+#ifdef CONFIG_SOC_AU1200
+	if (memid)
+		au1xxx_ddma_del_device(memid);
+#endif
 	platform_driver_unregister(&au1xmmc_driver);
 }
 
 module_init(au1xmmc_init);
 module_exit(au1xmmc_exit);
 
-#ifdef MODULE
 MODULE_AUTHOR("Advanced Micro Devices, Inc");
 MODULE_DESCRIPTION("MMC/SD driver for the Alchemy Au1XXX");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:au1xxx-mmc");
-#endif
-
diff --git a/drivers/mmc/host/au1xmmc.h b/drivers/mmc/host/au1xmmc.h
index 341cbdf..3b40065 100644
--- a/drivers/mmc/host/au1xmmc.h
+++ b/drivers/mmc/host/au1xmmc.h
@@ -49,8 +49,6 @@ struct au1xmmc_host {
   struct mmc_host *mmc;
   struct mmc_request *mrq;
 
-  u32 id;
-
   u32 flags;
   u32 iobase;
   u32 clock;
@@ -73,11 +71,14 @@ struct au1xmmc_host {
   u32 tx_chan;
   u32 rx_chan;
 
+  int irq;
+
   struct timer_list timer;
   struct tasklet_struct finish_task;
   struct tasklet_struct data_task;
-
-  spinlock_t lock;
+  struct au1xmmc_platform_data *platdata;
+  struct platform_device *pdev;
+  struct resource *ioarea;
 };
 
 /* Status flags used by the host structure */
diff --git a/include/asm-mips/mach-au1x00/au1100_mmc.h b/include/asm-mips/mach-au1x00/au1100_mmc.h
index 9e0028f..c35e209 100644
--- a/include/asm-mips/mach-au1x00/au1100_mmc.h
+++ b/include/asm-mips/mach-au1x00/au1100_mmc.h
@@ -38,15 +38,15 @@
 #ifndef __ASM_AU1100_MMC_H
 #define __ASM_AU1100_MMC_H
 
-
-#define NUM_AU1100_MMC_CONTROLLERS	2
-
-#if defined(CONFIG_SOC_AU1100)
-#define AU1100_SD_IRQ	AU1100_SD_INT
-#elif defined(CONFIG_SOC_AU1200)
-#define AU1100_SD_IRQ	AU1200_SD_INT
-#endif
-
+#include <linux/leds.h>
+
+struct au1xmmc_platform_data {
+	int(*cd_setup)(void *mmc_host, int on);
+	int(*card_inserted)(void *mmc_host);
+	int(*card_readonly)(void *mmc_host);
+	void(*set_power)(void *mmc_host, int state);
+	struct led_classdev *led;
+};
 
 #define SD0_BASE	0xB0600000
 #define SD1_BASE	0xB0680000
-- 
1.5.5.3

[PATCH 2/8] Alchemy: register mmc platform device for db1200/pb1200 boards.

[Manuel Lauss]

>From 536f44d2947f3883016b927a621e30782bd3149f Mon Sep 17 00:00:00 2001
From: Manuel Lauss <mlau@msc-ge.com>
Date: Sat, 17 May 2008 17:48:02 +0200
Subject: [PATCH] Alchemy: register mmc platform device for db1200/pb1200 boards

Add au1xmmc platform data for PB1200/DB1200 boards, and wire up
the 2 SD controllers for them.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
---
 arch/mips/au1000/common/platform.c |   99 +++++++++++++++++++++++++++---------
 arch/mips/au1000/pb1200/platform.c |   81 +++++++++++++++++++++++++++++
 2 files changed, 156 insertions(+), 24 deletions(-)

diff --git a/arch/mips/au1000/common/platform.c b/arch/mips/au1000/common/platform.c
index 8cae775..c235434 100644
--- a/arch/mips/au1000/common/platform.c
+++ b/arch/mips/au1000/common/platform.c
@@ -16,6 +16,8 @@
 #include <linux/init.h>
 
 #include <asm/mach-au1x00/au1xxx.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+#include <asm/mach-au1x00/au1100_mmc.h>
 
 #define PORT(_base, _irq)				\
 	{						\
@@ -162,24 +164,6 @@ static struct resource au1xxx_usb_gdt_resources[] = {
 	},
 };
 
-static struct resource au1xxx_mmc_resources[] = {
-	[0] = {
-		.start          = SD0_PHYS_ADDR,
-		.end            = SD0_PHYS_ADDR + 0x40,
-		.flags          = IORESOURCE_MEM,
-	},
-	[1] = {
-		.start		= SD1_PHYS_ADDR,
-		.end 		= SD1_PHYS_ADDR + 0x40,
-		.flags		= IORESOURCE_MEM,
-	},
-	[2] = {
-		.start          = AU1200_SD_INT,
-		.end            = AU1200_SD_INT,
-		.flags          = IORESOURCE_IRQ,
-	}
-};
-
 static u64 udc_dmamask = ~(u32)0;
 
 static struct platform_device au1xxx_usb_gdt_device = {
@@ -248,16 +232,80 @@ static struct platform_device au1200_lcd_device = {
 
 static u64 au1xxx_mmc_dmamask =  ~(u32)0;
 
-static struct platform_device au1xxx_mmc_device = {
+extern struct au1xmmc_platform_data au1xmmc_platdata[2];
+
+static struct resource au1200_mmc0_resources[] = {
+	[0] = {
+		.start          = SD0_PHYS_ADDR,
+		.end            = SD0_PHYS_ADDR + 0x7ffff,
+		.flags          = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= AU1200_SD_INT,
+		.end		= AU1200_SD_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start		= DSCR_CMD0_SDMS_TX0,
+		.end		= DSCR_CMD0_SDMS_TX0,
+		.flags		= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start          = DSCR_CMD0_SDMS_RX0,
+		.end		= DSCR_CMD0_SDMS_RX0,
+		.flags          = IORESOURCE_DMA,
+	}
+};
+
+static struct platform_device au1200_mmc0_device = {
 	.name = "au1xxx-mmc",
 	.id = 0,
 	.dev = {
-		.dma_mask               = &au1xxx_mmc_dmamask,
-		.coherent_dma_mask      = 0xffffffff,
+		.dma_mask		= &au1xxx_mmc_dmamask,
+		.coherent_dma_mask	= 0xffffffff,
+		.platform_data		= &au1xmmc_platdata[0],
 	},
-	.num_resources  = ARRAY_SIZE(au1xxx_mmc_resources),
-	.resource       = au1xxx_mmc_resources,
+	.num_resources	= ARRAY_SIZE(au1200_mmc0_resources),
+	.resource	= au1200_mmc0_resources,
 };
+
+#ifndef CONFIG_MIPS_DB1200
+static struct resource au1200_mmc1_resources[] = {
+	[0] = {
+		.start          = SD1_PHYS_ADDR,
+		.end            = SD1_PHYS_ADDR + 0x7ffff,
+		.flags          = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= AU1200_SD_INT,
+		.end		= AU1200_SD_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start		= DSCR_CMD0_SDMS_TX1,
+		.end		= DSCR_CMD0_SDMS_TX1,
+		.flags		= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start          = DSCR_CMD0_SDMS_RX1,
+		.end		= DSCR_CMD0_SDMS_RX1,
+		.flags          = IORESOURCE_DMA,
+	}
+};
+
+
+static struct platform_device au1200_mmc1_device = {
+	.name = "au1xxx-mmc",
+	.id = 1,
+	.dev = {
+		.dma_mask		= &au1xxx_mmc_dmamask,
+		.coherent_dma_mask	= 0xffffffff,
+		.platform_data		= &au1xmmc_platdata[1],
+	},
+	.num_resources	= ARRAY_SIZE(au1200_mmc1_resources),
+	.resource	= au1200_mmc1_resources,
+};
+#endif /* #ifndef CONFIG_MIPS_DB1200 */
 #endif /* #ifdef CONFIG_SOC_AU1200 */
 
 static struct platform_device au1x00_pcmcia_device = {
@@ -295,7 +343,10 @@ static struct platform_device *au1xxx_platform_devices[] __initdata = {
 	&au1xxx_usb_gdt_device,
 	&au1xxx_usb_otg_device,
 	&au1200_lcd_device,
-	&au1xxx_mmc_device,
+	&au1200_mmc0_device,
+#ifndef CONFIG_MIPS_DB1200
+	&au1200_mmc1_device,
+#endif
 #endif
 #ifdef SMBUS_PSC_BASE
 	&pbdb_smbus_device,
diff --git a/arch/mips/au1000/pb1200/platform.c b/arch/mips/au1000/pb1200/platform.c
index 5930110..faf3d92 100644
--- a/arch/mips/au1000/pb1200/platform.c
+++ b/arch/mips/au1000/pb1200/platform.c
@@ -19,9 +19,90 @@
  */
 
 #include <linux/init.h>
+#include <linux/leds.h>
 #include <linux/platform_device.h>
 
 #include <asm/mach-au1x00/au1xxx.h>
+#include <asm/mach-au1x00/au1100_mmc.h>
+
+static int mmc_activity = 0;
+
+static void pb1200mmc0_set_power(void *mmc_host, int state)
+{
+	if (state)
+		bcsr->board |= BCSR_BOARD_SD0PWR;
+	else
+		bcsr->board &= ~BCSR_BOARD_SD0PWR;
+
+	au_sync_delay(1);
+}
+
+static int pb1200mmc0_card_readonly(void *mmc_host)
+{
+	return (bcsr->status & BCSR_STATUS_SD0WP) ? 1 : 0;
+}
+
+static int pb1200mmc0_card_inserted(void *mmc_host)
+{
+	return (bcsr->sig_status & BCSR_INT_SD0INSERT) ? 1 : 0;
+}
+
+static void pb1200_mmcled_set(struct led_classdev *led,
+			enum led_brightness brightness)
+{
+	if (brightness != LED_OFF) {
+		if (++mmc_activity == 1)
+			bcsr->disk_leds &= ~(1 << 8);
+	} else {
+		if (--mmc_activity == 0)
+			bcsr->disk_leds |= (1 << 8);
+	}
+}
+
+static struct led_classdev pb1200mmc_led = {
+	.brightness_set	= pb1200_mmcled_set,
+};
+
+#ifndef CONFIG_MIPS_DB1200
+static void pb1200mmc1_set_power(void *mmc_host, int state)
+{
+	if (state)
+		bcsr->board |= BCSR_BOARD_SD1PWR;
+	else
+		bcsr->board &= ~BCSR_BOARD_SD1PWR;
+
+	au_sync_delay(1);
+}
+
+static int pb1200mmc1_card_readonly(void *mmc_host)
+{
+	return (bcsr->status & BCSR_STATUS_SD1WP) ? 1 : 0;
+}
+
+static int pb1200mmc1_card_inserted(void *mmc_host)
+{
+	return (bcsr->sig_status & BCSR_INT_SD1INSERT) ? 1 : 0;
+}
+#endif
+
+const struct au1xmmc_platform_data au1xmmc_platdata[2] = {
+	[0] = {
+		.set_power	= pb1200mmc0_set_power,
+		.card_inserted	= pb1200mmc0_card_inserted,
+		.card_readonly	= pb1200mmc0_card_readonly,
+		.cd_setup	= NULL,		/* use poll-timer in driver */
+		.led		= &pb1200mmc_led,
+	},
+#ifndef CONFIG_MIPS_DB1200
+	[1] = {
+		.set_power	= pb1200mmc1_set_power,
+		.card_inserted	= pb1200mmc1_card_inserted,
+		.card_readonly	= pb1200mmc1_card_readonly,
+		.cd_setup	= NULL,		/* use poll-timer in driver */
+		.led		= &pb1200mmc_led,
+	},
+#endif
+};
 
 static struct resource ide_resources[] = {
 	[0] = {
-- 
1.5.5.3

Re: [PATCH 2/8] Alchemy: register mmc platform device for db1200/pb1200 boards.

[Ralf Baechle]

On Mon, Jun 09, 2008 at 08:37:02AM +0200, Manuel Lauss wrote:

Only a few small nits ...

> >From 536f44d2947f3883016b927a621e30782bd3149f Mon Sep 17 00:00:00 2001
> From: Manuel Lauss <mlau@msc-ge.com>
> Date: Sat, 17 May 2008 17:48:02 +0200
> Subject: [PATCH] Alchemy: register mmc platform device for db1200/pb1200 boards

Please only post as part of the body what is supposed to go into the commit
message.  Three of these lines are junk which the maintainer applying the
patch will have to remove ...

> Add au1xmmc platform data for PB1200/DB1200 boards, and wire up
> the 2 SD controllers for them.
> 
> Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
> ---
>  arch/mips/au1000/common/platform.c |   99 +++++++++++++++++++++++++++---------
>  arch/mips/au1000/pb1200/platform.c |   81 +++++++++++++++++++++++++++++
>  2 files changed, 156 insertions(+), 24 deletions(-)
> 
> diff --git a/arch/mips/au1000/common/platform.c b/arch/mips/au1000/common/platform.c
> index 8cae775..c235434 100644
> --- a/arch/mips/au1000/common/platform.c
> +++ b/arch/mips/au1000/common/platform.c
> @@ -16,6 +16,8 @@
>  #include <linux/init.h>
>  
>  #include <asm/mach-au1x00/au1xxx.h>
> +#include <asm/mach-au1x00/au1xxx_dbdma.h>
> +#include <asm/mach-au1x00/au1100_mmc.h>
>  
>  #define PORT(_base, _irq)				\
>  	{						\
> @@ -162,24 +164,6 @@ static struct resource au1xxx_usb_gdt_resources[] = {
>  	},
>  };
>  
> -static struct resource au1xxx_mmc_resources[] = {
> -	[0] = {
> -		.start          = SD0_PHYS_ADDR,
> -		.end            = SD0_PHYS_ADDR + 0x40,
> -		.flags          = IORESOURCE_MEM,
> -	},
> -	[1] = {
> -		.start		= SD1_PHYS_ADDR,
> -		.end 		= SD1_PHYS_ADDR + 0x40,
> -		.flags		= IORESOURCE_MEM,
> -	},
> -	[2] = {
> -		.start          = AU1200_SD_INT,
> -		.end            = AU1200_SD_INT,
> -		.flags          = IORESOURCE_IRQ,
> -	}
> -};
> -
>  static u64 udc_dmamask = ~(u32)0;

Okay, you didn't change this line but using DMA_32BIT_MASK would be
cleaner ...

>  static struct platform_device au1xxx_usb_gdt_device = {
> @@ -248,16 +232,80 @@ static struct platform_device au1200_lcd_device = {
>  
>  static u64 au1xxx_mmc_dmamask =  ~(u32)0;

Ditto.

> -static struct platform_device au1xxx_mmc_device = {
> +extern struct au1xmmc_platform_data au1xmmc_platdata[2];
> +
> +static struct resource au1200_mmc0_resources[] = {
> +	[0] = {
> +		.start          = SD0_PHYS_ADDR,
> +		.end            = SD0_PHYS_ADDR + 0x7ffff,
> +		.flags          = IORESOURCE_MEM,
> +	},
> +	[1] = {
> +		.start		= AU1200_SD_INT,
> +		.end		= AU1200_SD_INT,
> +		.flags		= IORESOURCE_IRQ,
> +	},
> +	[2] = {
> +		.start		= DSCR_CMD0_SDMS_TX0,
> +		.end		= DSCR_CMD0_SDMS_TX0,
> +		.flags		= IORESOURCE_DMA,
> +	},
> +	[3] = {
> +		.start          = DSCR_CMD0_SDMS_RX0,
> +		.end		= DSCR_CMD0_SDMS_RX0,
> +		.flags          = IORESOURCE_DMA,
> +	}
> +};
> +
> +static struct platform_device au1200_mmc0_device = {
>  	.name = "au1xxx-mmc",
>  	.id = 0,
>  	.dev = {
> -		.dma_mask               = &au1xxx_mmc_dmamask,
> -		.coherent_dma_mask      = 0xffffffff,
> +		.dma_mask		= &au1xxx_mmc_dmamask,
> +		.coherent_dma_mask	= 0xffffffff,

DMA_32BIT_MASK.

> +		.platform_data		= &au1xmmc_platdata[0],
>  	},
> -	.num_resources  = ARRAY_SIZE(au1xxx_mmc_resources),
> -	.resource       = au1xxx_mmc_resources,
> +	.num_resources	= ARRAY_SIZE(au1200_mmc0_resources),
> +	.resource	= au1200_mmc0_resources,
>  };
> +
> +#ifndef CONFIG_MIPS_DB1200
> +static struct resource au1200_mmc1_resources[] = {
> +	[0] = {
> +		.start          = SD1_PHYS_ADDR,
> +		.end            = SD1_PHYS_ADDR + 0x7ffff,
> +		.flags          = IORESOURCE_MEM,
> +	},
> +	[1] = {
> +		.start		= AU1200_SD_INT,
> +		.end		= AU1200_SD_INT,
> +		.flags		= IORESOURCE_IRQ,
> +	},
> +	[2] = {
> +		.start		= DSCR_CMD0_SDMS_TX1,
> +		.end		= DSCR_CMD0_SDMS_TX1,
> +		.flags		= IORESOURCE_DMA,
> +	},
> +	[3] = {
> +		.start          = DSCR_CMD0_SDMS_RX1,
> +		.end		= DSCR_CMD0_SDMS_RX1,
> +		.flags          = IORESOURCE_DMA,
> +	}
> +};
> +
> +
> +static struct platform_device au1200_mmc1_device = {
> +	.name = "au1xxx-mmc",
> +	.id = 1,
> +	.dev = {
> +		.dma_mask		= &au1xxx_mmc_dmamask,
> +		.coherent_dma_mask	= 0xffffffff,

DMA_32BIT_MASK.

> +		.platform_data		= &au1xmmc_platdata[1],
> +	},
> +	.num_resources	= ARRAY_SIZE(au1200_mmc1_resources),
> +	.resource	= au1200_mmc1_resources,
> +};
> +#endif /* #ifndef CONFIG_MIPS_DB1200 */
>  #endif /* #ifdef CONFIG_SOC_AU1200 */
>  
>  static struct platform_device au1x00_pcmcia_device = {
> @@ -295,7 +343,10 @@ static struct platform_device *au1xxx_platform_devices[] __initdata = {
>  	&au1xxx_usb_gdt_device,
>  	&au1xxx_usb_otg_device,
>  	&au1200_lcd_device,
> -	&au1xxx_mmc_device,
> +	&au1200_mmc0_device,
> +#ifndef CONFIG_MIPS_DB1200
> +	&au1200_mmc1_device,
> +#endif
>  #endif
>  #ifdef SMBUS_PSC_BASE
>  	&pbdb_smbus_device,
> diff --git a/arch/mips/au1000/pb1200/platform.c b/arch/mips/au1000/pb1200/platform.c
> index 5930110..faf3d92 100644
> --- a/arch/mips/au1000/pb1200/platform.c
> +++ b/arch/mips/au1000/pb1200/platform.c
> @@ -19,9 +19,90 @@
>   */
>  
>  #include <linux/init.h>
> +#include <linux/leds.h>
>  #include <linux/platform_device.h>
>  
>  #include <asm/mach-au1x00/au1xxx.h>
> +#include <asm/mach-au1x00/au1100_mmc.h>
> +
> +static int mmc_activity = 0;

Don't initialize static variables to 0.

> +
> +static void pb1200mmc0_set_power(void *mmc_host, int state)
> +{
> +	if (state)
> +		bcsr->board |= BCSR_BOARD_SD0PWR;
> +	else
> +		bcsr->board &= ~BCSR_BOARD_SD0PWR;
> +
> +	au_sync_delay(1);
> +}
> +
> +static int pb1200mmc0_card_readonly(void *mmc_host)
> +{
> +	return (bcsr->status & BCSR_STATUS_SD0WP) ? 1 : 0;
> +}
> +
> +static int pb1200mmc0_card_inserted(void *mmc_host)
> +{
> +	return (bcsr->sig_status & BCSR_INT_SD0INSERT) ? 1 : 0;
> +}
> +
> +static void pb1200_mmcled_set(struct led_classdev *led,
> +			enum led_brightness brightness)
> +{
> +	if (brightness != LED_OFF) {
> +		if (++mmc_activity == 1)
> +			bcsr->disk_leds &= ~(1 << 8);
> +	} else {
> +		if (--mmc_activity == 0)
> +			bcsr->disk_leds |= (1 << 8);
> +	}
> +}
> +
> +static struct led_classdev pb1200mmc_led = {
> +	.brightness_set	= pb1200_mmcled_set,
> +};
> +
> +#ifndef CONFIG_MIPS_DB1200
> +static void pb1200mmc1_set_power(void *mmc_host, int state)
> +{
> +	if (state)
> +		bcsr->board |= BCSR_BOARD_SD1PWR;
> +	else
> +		bcsr->board &= ~BCSR_BOARD_SD1PWR;
> +
> +	au_sync_delay(1);
> +}
> +
> +static int pb1200mmc1_card_readonly(void *mmc_host)
> +{
> +	return (bcsr->status & BCSR_STATUS_SD1WP) ? 1 : 0;
> +}
> +
> +static int pb1200mmc1_card_inserted(void *mmc_host)
> +{
> +	return (bcsr->sig_status & BCSR_INT_SD1INSERT) ? 1 : 0;
> +}
> +#endif
> +
> +const struct au1xmmc_platform_data au1xmmc_platdata[2] = {
> +	[0] = {
> +		.set_power	= pb1200mmc0_set_power,
> +		.card_inserted	= pb1200mmc0_card_inserted,
> +		.card_readonly	= pb1200mmc0_card_readonly,
> +		.cd_setup	= NULL,		/* use poll-timer in driver */
> +		.led		= &pb1200mmc_led,
> +	},
> +#ifndef CONFIG_MIPS_DB1200
> +	[1] = {
> +		.set_power	= pb1200mmc1_set_power,
> +		.card_inserted	= pb1200mmc1_card_inserted,
> +		.card_readonly	= pb1200mmc1_card_readonly,
> +		.cd_setup	= NULL,		/* use poll-timer in driver */
> +		.led		= &pb1200mmc_led,
> +	},
> +#endif
> +};
>  
>  static struct resource ide_resources[] = {
>  	[0] = {
> -- 
> 1.5.5.3
> 

Re: [PATCH 2/8] Alchemy: register mmc platform device for db1200/pb1200 boards.

[Ralf Baechle]

On Thu, Jun 12, 2008 at 10:02:06AM +0100, Ralf Baechle wrote:

I cleaned the numerals for the DMA constants with below patch which now
is in the 2.6.27 patch queue.

  Ralf

From: Ralf Baechle <ralf@linux-mips.org>

[MIPS] Alchemy, PNX: Use symbolic constants for DMA masks.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 arch/mips/au1000/common/platform.c      |   29 +++++++++++++++--------------
 arch/mips/au1000/pb1200/platform.c      |    5 +++--
 arch/mips/nxp/pnx8550/common/platform.c |    9 +++++----
 3 files changed, 23 insertions(+), 20 deletions(-)

Index: linux-queue/arch/mips/au1000/common/platform.c
===================================================================
--- linux-queue.orig/arch/mips/au1000/common/platform.c
+++ linux-queue/arch/mips/au1000/common/platform.c
@@ -11,6 +11,7 @@
  * warranty of any kind, whether express or implied.
  */
 
+#include <linux/dma-mapping.h>
 #include <linux/platform_device.h>
 #include <linux/serial_8250.h>
 #include <linux/init.h>
@@ -77,14 +78,14 @@ static struct resource au1xxx_usb_ohci_r
 };
 
 /* The dmamask must be set for OHCI to work */
-static u64 ohci_dmamask = ~(u32)0;
+static u64 ohci_dmamask = DMA_32BIT_MASK;
 
 static struct platform_device au1xxx_usb_ohci_device = {
 	.name		= "au1xxx-ohci",
 	.id		= 0,
 	.dev = {
 		.dma_mask		= &ohci_dmamask,
-		.coherent_dma_mask	= 0xffffffff,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
 	},
 	.num_resources	= ARRAY_SIZE(au1xxx_usb_ohci_resources),
 	.resource	= au1xxx_usb_ohci_resources,
@@ -106,14 +107,14 @@ static struct resource au1100_lcd_resour
 	}
 };
 
-static u64 au1100_lcd_dmamask = ~(u32)0;
+static u64 au1100_lcd_dmamask = DMA_32BIT_MASK;
 
 static struct platform_device au1100_lcd_device = {
 	.name           = "au1100-lcd",
 	.id             = 0,
 	.dev = {
 		.dma_mask               = &au1100_lcd_dmamask,
-		.coherent_dma_mask      = 0xffffffff,
+		.coherent_dma_mask      = DMA_32BIT_MASK,
 	},
 	.num_resources  = ARRAY_SIZE(au1100_lcd_resources),
 	.resource       = au1100_lcd_resources,
@@ -135,14 +136,14 @@ static struct resource au1xxx_usb_ehci_r
 	},
 };
 
-static u64 ehci_dmamask = ~(u32)0;
+static u64 ehci_dmamask = DMA_32BIT_MASK;
 
 static struct platform_device au1xxx_usb_ehci_device = {
 	.name		= "au1xxx-ehci",
 	.id		= 0,
 	.dev = {
 		.dma_mask		= &ehci_dmamask,
-		.coherent_dma_mask	= 0xffffffff,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
 	},
 	.num_resources	= ARRAY_SIZE(au1xxx_usb_ehci_resources),
 	.resource	= au1xxx_usb_ehci_resources,
@@ -180,14 +181,14 @@ static struct resource au1xxx_mmc_resour
 	}
 };
 
-static u64 udc_dmamask = ~(u32)0;
+static u64 udc_dmamask = DMA_32BIT_MASK;
 
 static struct platform_device au1xxx_usb_gdt_device = {
 	.name		= "au1xxx-udc",
 	.id		= 0,
 	.dev = {
 		.dma_mask		= &udc_dmamask,
-		.coherent_dma_mask	= 0xffffffff,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
 	},
 	.num_resources	= ARRAY_SIZE(au1xxx_usb_gdt_resources),
 	.resource	= au1xxx_usb_gdt_resources,
@@ -207,14 +208,14 @@ static struct resource au1xxx_usb_otg_re
 	},
 };
 
-static u64 uoc_dmamask = ~(u32)0;
+static u64 uoc_dmamask = DMA_32BIT_MASK;
 
 static struct platform_device au1xxx_usb_otg_device = {
 	.name		= "au1xxx-uoc",
 	.id		= 0,
 	.dev = {
 		.dma_mask		= &uoc_dmamask,
-		.coherent_dma_mask	= 0xffffffff,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
 	},
 	.num_resources	= ARRAY_SIZE(au1xxx_usb_otg_resources),
 	.resource	= au1xxx_usb_otg_resources,
@@ -233,27 +234,27 @@ static struct resource au1200_lcd_resour
 	}
 };
 
-static u64 au1200_lcd_dmamask = ~(u32)0;
+static u64 au1200_lcd_dmamask = DMA_32BIT_MASK;
 
 static struct platform_device au1200_lcd_device = {
 	.name           = "au1200-lcd",
 	.id             = 0,
 	.dev = {
 		.dma_mask               = &au1200_lcd_dmamask,
-		.coherent_dma_mask      = 0xffffffff,
+		.coherent_dma_mask      = DMA_32BIT_MASK,
 	},
 	.num_resources  = ARRAY_SIZE(au1200_lcd_resources),
 	.resource       = au1200_lcd_resources,
 };
 
-static u64 au1xxx_mmc_dmamask =  ~(u32)0;
+static u64 au1xxx_mmc_dmamask =  DMA_32BIT_MASK;
 
 static struct platform_device au1xxx_mmc_device = {
 	.name = "au1xxx-mmc",
 	.id = 0,
 	.dev = {
 		.dma_mask               = &au1xxx_mmc_dmamask,
-		.coherent_dma_mask      = 0xffffffff,
+		.coherent_dma_mask      = DMA_32BIT_MASK,
 	},
 	.num_resources  = ARRAY_SIZE(au1xxx_mmc_resources),
 	.resource       = au1xxx_mmc_resources,
Index: linux-queue/arch/mips/au1000/pb1200/platform.c
===================================================================
--- linux-queue.orig/arch/mips/au1000/pb1200/platform.c
+++ linux-queue/arch/mips/au1000/pb1200/platform.c
@@ -18,6 +18,7 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
+#include <linux/dma-mapping.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
 
@@ -36,14 +37,14 @@ static struct resource ide_resources[] =
 	}
 };
 
-static u64 ide_dmamask = ~(u32)0;
+static u64 ide_dmamask = DMA_32BIT_MASK;
 
 static struct platform_device ide_device = {
 	.name		= "au1200-ide",
 	.id		= 0,
 	.dev = {
 		.dma_mask 		= &ide_dmamask,
-		.coherent_dma_mask	= 0xffffffff,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
 	},
 	.num_resources	= ARRAY_SIZE(ide_resources),
 	.resource	= ide_resources
Index: linux-queue/arch/mips/nxp/pnx8550/common/platform.c
===================================================================
--- linux-queue.orig/arch/mips/nxp/pnx8550/common/platform.c
+++ linux-queue/arch/mips/nxp/pnx8550/common/platform.c
@@ -13,6 +13,7 @@
  * warranty of any kind, whether express or implied.
  */
 #include <linux/device.h>
+#include <linux/dma-mapping.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/resource.h>
@@ -91,16 +92,16 @@ struct pnx8xxx_port pnx8xxx_ports[] = {
 };
 
 /* The dmamask must be set for OHCI to work */
-static u64 ohci_dmamask = ~(u32)0;
+static u64 ohci_dmamask = DMA_32BIT_MASK;
 
-static u64 uart_dmamask = ~(u32)0;
+static u64 uart_dmamask = DMA_32BIT_MASK;
 
 static struct platform_device pnx8550_usb_ohci_device = {
 	.name		= "pnx8550-ohci",
 	.id		= -1,
 	.dev = {
 		.dma_mask		= &ohci_dmamask,
-		.coherent_dma_mask	= 0xffffffff,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
 	},
 	.num_resources	= ARRAY_SIZE(pnx8550_usb_ohci_resources),
 	.resource	= pnx8550_usb_ohci_resources,
@@ -111,7 +112,7 @@ static struct platform_device pnx8550_ua
 	.id		= -1,
 	.dev = {
 		.dma_mask		= &uart_dmamask,
-		.coherent_dma_mask	= 0xffffffff,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
 		.platform_data = pnx8xxx_ports,
 	},
 	.num_resources	= ARRAY_SIZE(pnx8550_uart_resources),

[PATCH 2/8] Alchemy: register mmc platform device for db1200/pb1200 boards.

[Manuel Lauss]

Hi Ralf, Pierre,

On Thu, Jun 12, 2008 at 11:18:39AM +0100, Ralf Baechle wrote:
> On Thu, Jun 12, 2008 at 10:02:06AM +0100, Ralf Baechle wrote:
> 
> I cleaned the numerals for the DMA constants with below patch which now
> is in the 2.6.27 patch queue.

Here's a new version of [PATCH 2/8], against those changes.

---

From: Manuel Lauss <mano@roarinelk.homelinux.net>

Add au1xmmc platform data for PB1200/DB1200 boards, and wire up
the 2 SD controllers for them.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
---
 arch/mips/au1000/common/platform.c |   98 +++++++++++++++++++++++++++---------
 arch/mips/au1000/pb1200/platform.c |   81 +++++++++++++++++++++++++++++
 2 files changed, 155 insertions(+), 24 deletions(-)

diff --git a/arch/mips/au1000/common/platform.c b/arch/mips/au1000/common/platform.c
index d01fe5f..5c76c64 100644
--- a/arch/mips/au1000/common/platform.c
+++ b/arch/mips/au1000/common/platform.c
@@ -17,6 +17,8 @@
 #include <linux/init.h>
 
 #include <asm/mach-au1x00/au1xxx.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+#include <asm/mach-au1x00/au1100_mmc.h>
 
 #define PORT(_base, _irq)				\
 	{						\
@@ -163,24 +165,6 @@ static struct resource au1xxx_usb_gdt_resources[] = {
 	},
 };
 
-static struct resource au1xxx_mmc_resources[] = {
-	[0] = {
-		.start          = SD0_PHYS_ADDR,
-		.end            = SD0_PHYS_ADDR + 0x40,
-		.flags          = IORESOURCE_MEM,
-	},
-	[1] = {
-		.start		= SD1_PHYS_ADDR,
-		.end 		= SD1_PHYS_ADDR + 0x40,
-		.flags		= IORESOURCE_MEM,
-	},
-	[2] = {
-		.start          = AU1200_SD_INT,
-		.end            = AU1200_SD_INT,
-		.flags          = IORESOURCE_IRQ,
-	}
-};
-
 static u64 udc_dmamask = DMA_32BIT_MASK;
 
 static struct platform_device au1xxx_usb_gdt_device = {
@@ -249,16 +233,79 @@ static struct platform_device au1200_lcd_device = {
 
 static u64 au1xxx_mmc_dmamask =  DMA_32BIT_MASK;
 
-static struct platform_device au1xxx_mmc_device = {
+extern struct au1xmmc_platform_data au1xmmc_platdata[2];
+
+static struct resource au1200_mmc0_resources[] = {
+	[0] = {
+		.start          = SD0_PHYS_ADDR,
+		.end            = SD0_PHYS_ADDR + 0x7ffff,
+		.flags          = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= AU1200_SD_INT,
+		.end		= AU1200_SD_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start		= DSCR_CMD0_SDMS_TX0,
+		.end		= DSCR_CMD0_SDMS_TX0,
+		.flags		= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start          = DSCR_CMD0_SDMS_RX0,
+		.end		= DSCR_CMD0_SDMS_RX0,
+		.flags          = IORESOURCE_DMA,
+	}
+};
+
+static struct platform_device au1200_mmc0_device = {
 	.name = "au1xxx-mmc",
 	.id = 0,
 	.dev = {
-		.dma_mask               = &au1xxx_mmc_dmamask,
-		.coherent_dma_mask      = DMA_32BIT_MASK,
+		.dma_mask		= &au1xxx_mmc_dmamask,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
+		.platform_data		= &au1xmmc_platdata[0],
+	},
+	.num_resources	= ARRAY_SIZE(au1200_mmc0_resources),
+	.resource	= au1200_mmc0_resources,
+};
+
+#ifndef CONFIG_MIPS_DB1200
+static struct resource au1200_mmc1_resources[] = {
+	[0] = {
+		.start          = SD1_PHYS_ADDR,
+		.end            = SD1_PHYS_ADDR + 0x7ffff,
+		.flags          = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= AU1200_SD_INT,
+		.end		= AU1200_SD_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start		= DSCR_CMD0_SDMS_TX1,
+		.end		= DSCR_CMD0_SDMS_TX1,
+		.flags		= IORESOURCE_DMA,
 	},
-	.num_resources  = ARRAY_SIZE(au1xxx_mmc_resources),
-	.resource       = au1xxx_mmc_resources,
+	[3] = {
+		.start          = DSCR_CMD0_SDMS_RX1,
+		.end		= DSCR_CMD0_SDMS_RX1,
+		.flags          = IORESOURCE_DMA,
+	}
 };
+
+static struct platform_device au1200_mmc1_device = {
+	.name = "au1xxx-mmc",
+	.id = 1,
+	.dev = {
+		.dma_mask		= &au1xxx_mmc_dmamask,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
+		.platform_data		= &au1xmmc_platdata[1],
+	},
+	.num_resources	= ARRAY_SIZE(au1200_mmc1_resources),
+	.resource	= au1200_mmc1_resources,
+};
+#endif /* #ifndef CONFIG_MIPS_DB1200 */
 #endif /* #ifdef CONFIG_SOC_AU1200 */
 
 static struct platform_device au1x00_pcmcia_device = {
@@ -296,7 +343,10 @@ static struct platform_device *au1xxx_platform_devices[] __initdata = {
 	&au1xxx_usb_gdt_device,
 	&au1xxx_usb_otg_device,
 	&au1200_lcd_device,
-	&au1xxx_mmc_device,
+	&au1200_mmc0_device,
+#ifndef CONFIG_MIPS_DB1200
+	&au1200_mmc1_device,
+#endif
 #endif
 #ifdef SMBUS_PSC_BASE
 	&pbdb_smbus_device,
diff --git a/arch/mips/au1000/pb1200/platform.c b/arch/mips/au1000/pb1200/platform.c
index f8fb0ae..878b780 100644
--- a/arch/mips/au1000/pb1200/platform.c
+++ b/arch/mips/au1000/pb1200/platform.c
@@ -20,9 +20,90 @@
 
 #include <linux/dma-mapping.h>
 #include <linux/init.h>
+#include <linux/leds.h>
 #include <linux/platform_device.h>
 
 #include <asm/mach-au1x00/au1xxx.h>
+#include <asm/mach-au1x00/au1100_mmc.h>
+
+static int mmc_activity;
+
+static void pb1200mmc0_set_power(void *mmc_host, int state)
+{
+	if (state)
+		bcsr->board |= BCSR_BOARD_SD0PWR;
+	else
+		bcsr->board &= ~BCSR_BOARD_SD0PWR;
+
+	au_sync_delay(1);
+}
+
+static int pb1200mmc0_card_readonly(void *mmc_host)
+{
+	return (bcsr->status & BCSR_STATUS_SD0WP) ? 1 : 0;
+}
+
+static int pb1200mmc0_card_inserted(void *mmc_host)
+{
+	return (bcsr->sig_status & BCSR_INT_SD0INSERT) ? 1 : 0;
+}
+
+static void pb1200_mmcled_set(struct led_classdev *led,
+			enum led_brightness brightness)
+{
+	if (brightness != LED_OFF) {
+		if (++mmc_activity == 1)
+			bcsr->disk_leds &= ~(1 << 8);
+	} else {
+		if (--mmc_activity == 0)
+			bcsr->disk_leds |= (1 << 8);
+	}
+}
+
+static struct led_classdev pb1200mmc_led = {
+	.brightness_set	= pb1200_mmcled_set,
+};
+
+#ifndef CONFIG_MIPS_DB1200
+static void pb1200mmc1_set_power(void *mmc_host, int state)
+{
+	if (state)
+		bcsr->board |= BCSR_BOARD_SD1PWR;
+	else
+		bcsr->board &= ~BCSR_BOARD_SD1PWR;
+
+	au_sync_delay(1);
+}
+
+static int pb1200mmc1_card_readonly(void *mmc_host)
+{
+	return (bcsr->status & BCSR_STATUS_SD1WP) ? 1 : 0;
+}
+
+static int pb1200mmc1_card_inserted(void *mmc_host)
+{
+	return (bcsr->sig_status & BCSR_INT_SD1INSERT) ? 1 : 0;
+}
+#endif
+
+const struct au1xmmc_platform_data au1xmmc_platdata[2] = {
+	[0] = {
+		.set_power	= pb1200mmc0_set_power,
+		.card_inserted	= pb1200mmc0_card_inserted,
+		.card_readonly	= pb1200mmc0_card_readonly,
+		.cd_setup	= NULL,		/* use poll-timer in driver */
+		.led		= &pb1200mmc_led,
+	},
+#ifndef CONFIG_MIPS_DB1200
+	[1] = {
+		.set_power	= pb1200mmc1_set_power,
+		.card_inserted	= pb1200mmc1_card_inserted,
+		.card_readonly	= pb1200mmc1_card_readonly,
+		.cd_setup	= NULL,		/* use poll-timer in driver */
+		.led		= &pb1200mmc_led,
+	},
+#endif
+};
 
 static struct resource ide_resources[] = {
 	[0] = {
-- 
1.5.5.3

Re: [PATCH 2/8] Alchemy: register mmc platform device for db1200/pb1200 boards.

[Ralf Baechle]

On Thu, Jun 12, 2008 at 02:18:28PM +0200, Manuel Lauss wrote:

> Hi Ralf, Pierre,
> 
> On Thu, Jun 12, 2008 at 11:18:39AM +0100, Ralf Baechle wrote:
> > On Thu, Jun 12, 2008 at 10:02:06AM +0100, Ralf Baechle wrote:
> > 
> > I cleaned the numerals for the DMA constants with below patch which now
> > is in the 2.6.27 patch queue.
> 
> Here's a new version of [PATCH 2/8], against those changes.

Thanks, looking good, thus:

Acked-by: Ralf Baechl <ralf@linux-mips.org>

Pierre, feel free to merge these MIPS bits into your tree.  The whole
series should probably go upstream together.

  Ralf

Re: [PATCH 2/8] Alchemy: register mmc platform device for db1200/pb1200 boards.

[Pierre Ossman]

[-- Attachment #1: Type: text/plain, Size: 292 bytes --]

On Thu, 12 Jun 2008 13:26:46 +0100
Ralf Baechle <ralf@linux-mips.org> wrote:

> 
> Pierre, feel free to merge these MIPS bits into your tree.  The whole
> series should probably go upstream together.
> 

How's the dependency issue though? Will this series be bisectable in my
tree?

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Re: [PATCH 2/8] Alchemy: register mmc platform device for db1200/pb1200 boards.

[Ralf Baechle]

On Thu, Jun 12, 2008 at 03:42:48PM +0200, Pierre Ossman wrote:

> > Pierre, feel free to merge these MIPS bits into your tree.  The whole
> > series should probably go upstream together.
> > 
> 
> How's the dependency issue though? Will this series be bisectable in my
> tree?

If we're only talking about a build, there should be no dependencies
between the Alchemy and the MMC parts of the series.  The Alchemy part
sorts the device registration and that's a separate construction site
from the rest.  Of course with only one applied things won't work
terribly well but that would only be temporarily.

  Ralf

Re: [PATCH 2/8] Alchemy: register mmc platform device for db1200/pb1200 boards.

[Pierre Ossman]

[-- Attachment #1: Type: text/plain, Size: 502 bytes --]

On Thu, 12 Jun 2008 14:47:30 +0100
Ralf Baechle <ralf@linux-mips.org> wrote:

> 
> If we're only talking about a build, there should be no dependencies
> between the Alchemy and the MMC parts of the series.  The Alchemy part
> sorts the device registration and that's a separate construction site
> from the rest.  Of course with only one applied things won't work
> terribly well but that would only be temporarily.
> 

I suppose that should be sufficient. I'll queue up the patches here.

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Re: [PATCH 2/8] Alchemy: register mmc platform device for db1200/pb1200 boards.

[Manuel Lauss]

On Thu, Jun 12, 2008 at 02:47:30PM +0100, Ralf Baechle wrote:
> On Thu, Jun 12, 2008 at 03:42:48PM +0200, Pierre Ossman wrote:
> 
> > > Pierre, feel free to merge these MIPS bits into your tree.  The whole
> > > series should probably go upstream together.
> > > 
> > 
> > How's the dependency issue though? Will this series be bisectable in my
> > tree?
> 
> If we're only talking about a build, there should be no dependencies
> between the Alchemy and the MMC parts of the series.  The Alchemy part
> sorts the device registration and that's a separate construction site
> from the rest.  Of course with only one applied things won't work
> terribly well but that would only be temporarily.

FWIW, I build tested-tested the DB1200 defconfig after each patch applied.
As Ralf said, patch 1 alone isn't terribly useful on it, but it should work.

	Manuel Lauss

Re: [PATCH 2/8] Alchemy: register mmc platform device for db1200/pb1200 boards.

[Pierre Ossman]

[-- Attachment #1: Type: text/plain, Size: 1182 bytes --]

On Thu, 12 Jun 2008 15:58:10 +0200
Manuel Lauss <mano@roarinelk.homelinux.net> wrote:

> On Thu, Jun 12, 2008 at 02:47:30PM +0100, Ralf Baechle wrote:
> > On Thu, Jun 12, 2008 at 03:42:48PM +0200, Pierre Ossman wrote:
> > 
> > > 
> > > How's the dependency issue though? Will this series be bisectable in my
> > > tree?
> > 
> > If we're only talking about a build, there should be no dependencies
> > between the Alchemy and the MMC parts of the series.  The Alchemy part
> > sorts the device registration and that's a separate construction site
> > from the rest.  Of course with only one applied things won't work
> > terribly well but that would only be temporarily.
> 
> FWIW, I build tested-tested the DB1200 defconfig after each patch applied.
> As Ralf said, patch 1 alone isn't terribly useful on it, but it should work.
> 

This patch does not apply against HEAD. Are you sure there aren't any
dependencies on what Ralf has in his tree? If so, perhaps this should
be in the MIPS tree.

Rgds
-- 
     -- Pierre Ossman

  WARNING: This correspondence is being monitored by the
  Swedish government. Use end-to-end encryption where
  possible.

[-- Attachment #2: signature.asc --]
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Re: [PATCH 2/8] Alchemy: register mmc platform device for db1200/pb1200 boards.

[Manuel Lauss]

Hello Pierre,

On Fri, Jun 20, 2008 at 05:46:07PM +0200, Pierre Ossman wrote:
> On Thu, 12 Jun 2008 15:58:10 +0200
> Manuel Lauss <mano@roarinelk.homelinux.net> wrote:
> 
> > On Thu, Jun 12, 2008 at 02:47:30PM +0100, Ralf Baechle wrote:
> > > On Thu, Jun 12, 2008 at 03:42:48PM +0200, Pierre Ossman wrote:
> > > 
> > > > 
> > > > How's the dependency issue though? Will this series be bisectable in my
> > > > tree?
> > > 
> > > If we're only talking about a build, there should be no dependencies
> > > between the Alchemy and the MMC parts of the series.  The Alchemy part
> > > sorts the device registration and that's a separate construction site
> > > from the rest.  Of course with only one applied things won't work
> > > terribly well but that would only be temporarily.
> > 
> > FWIW, I build tested-tested the DB1200 defconfig after each patch applied.
> > As Ralf said, patch 1 alone isn't terribly useful on it, but it should work.
> > 
> 
> This patch does not apply against HEAD. Are you sure there aren't any
> dependencies on what Ralf has in his tree? If so, perhaps this should
> be in the MIPS tree.

It was broken by commit dab8c6deaf1d654d09c3de8bd4c286d424df255a which went
in this week; here's another updated version of [PATCH 2/8].

Thanks!
	Manuel Lauss

--- 
From: Manuel Lauss <mano@roarinelk.homelinux.net>

Add au1xmmc platform data for PB1200/DB1200 boards and wire up
the 2 SD controllers for them.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
---
 arch/mips/au1000/common/platform.c |   98 +++++++++++++++++++++++++++---------
 arch/mips/au1000/pb1200/platform.c |   81 +++++++++++++++++++++++++++++
 2 files changed, 155 insertions(+), 24 deletions(-)

diff --git a/arch/mips/au1000/common/platform.c b/arch/mips/au1000/common/platform.c
index dc8a67e..5c76c64 100644
--- a/arch/mips/au1000/common/platform.c
+++ b/arch/mips/au1000/common/platform.c
@@ -17,6 +17,8 @@
 #include <linux/init.h>
 
 #include <asm/mach-au1x00/au1xxx.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+#include <asm/mach-au1x00/au1100_mmc.h>
 
 #define PORT(_base, _irq)				\
 	{						\
@@ -163,24 +165,6 @@ static struct resource au1xxx_usb_gdt_resources[] = {
 	},
 };
 
-static struct resource au1xxx_mmc_resources[] = {
-	[0] = {
-		.start          = SD0_PHYS_ADDR,
-		.end            = SD0_PHYS_ADDR + 0x7ffff,
-		.flags          = IORESOURCE_MEM,
-	},
-	[1] = {
-		.start		= SD1_PHYS_ADDR,
-		.end 		= SD1_PHYS_ADDR + 0x7ffff,
-		.flags		= IORESOURCE_MEM,
-	},
-	[2] = {
-		.start          = AU1200_SD_INT,
-		.end            = AU1200_SD_INT,
-		.flags          = IORESOURCE_IRQ,
-	}
-};
-
 static u64 udc_dmamask = DMA_32BIT_MASK;
 
 static struct platform_device au1xxx_usb_gdt_device = {
@@ -249,16 +233,79 @@ static struct platform_device au1200_lcd_device = {
 
 static u64 au1xxx_mmc_dmamask =  DMA_32BIT_MASK;
 
-static struct platform_device au1xxx_mmc_device = {
+extern struct au1xmmc_platform_data au1xmmc_platdata[2];
+
+static struct resource au1200_mmc0_resources[] = {
+	[0] = {
+		.start          = SD0_PHYS_ADDR,
+		.end            = SD0_PHYS_ADDR + 0x7ffff,
+		.flags          = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= AU1200_SD_INT,
+		.end		= AU1200_SD_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start		= DSCR_CMD0_SDMS_TX0,
+		.end		= DSCR_CMD0_SDMS_TX0,
+		.flags		= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start          = DSCR_CMD0_SDMS_RX0,
+		.end		= DSCR_CMD0_SDMS_RX0,
+		.flags          = IORESOURCE_DMA,
+	}
+};
+
+static struct platform_device au1200_mmc0_device = {
 	.name = "au1xxx-mmc",
 	.id = 0,
 	.dev = {
-		.dma_mask               = &au1xxx_mmc_dmamask,
-		.coherent_dma_mask      = DMA_32BIT_MASK,
+		.dma_mask		= &au1xxx_mmc_dmamask,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
+		.platform_data		= &au1xmmc_platdata[0],
 	},
-	.num_resources  = ARRAY_SIZE(au1xxx_mmc_resources),
-	.resource       = au1xxx_mmc_resources,
+	.num_resources	= ARRAY_SIZE(au1200_mmc0_resources),
+	.resource	= au1200_mmc0_resources,
 };
+
+#ifndef CONFIG_MIPS_DB1200
+static struct resource au1200_mmc1_resources[] = {
+	[0] = {
+		.start          = SD1_PHYS_ADDR,
+		.end            = SD1_PHYS_ADDR + 0x7ffff,
+		.flags          = IORESOURCE_MEM,
+	},
+	[1] = {
+		.start		= AU1200_SD_INT,
+		.end		= AU1200_SD_INT,
+		.flags		= IORESOURCE_IRQ,
+	},
+	[2] = {
+		.start		= DSCR_CMD0_SDMS_TX1,
+		.end		= DSCR_CMD0_SDMS_TX1,
+		.flags		= IORESOURCE_DMA,
+	},
+	[3] = {
+		.start          = DSCR_CMD0_SDMS_RX1,
+		.end		= DSCR_CMD0_SDMS_RX1,
+		.flags          = IORESOURCE_DMA,
+	}
+};
+
+static struct platform_device au1200_mmc1_device = {
+	.name = "au1xxx-mmc",
+	.id = 1,
+	.dev = {
+		.dma_mask		= &au1xxx_mmc_dmamask,
+		.coherent_dma_mask	= DMA_32BIT_MASK,
+		.platform_data		= &au1xmmc_platdata[1],
+	},
+	.num_resources	= ARRAY_SIZE(au1200_mmc1_resources),
+	.resource	= au1200_mmc1_resources,
+};
+#endif /* #ifndef CONFIG_MIPS_DB1200 */
 #endif /* #ifdef CONFIG_SOC_AU1200 */
 
 static struct platform_device au1x00_pcmcia_device = {
@@ -296,7 +343,10 @@ static struct platform_device *au1xxx_platform_devices[] __initdata = {
 	&au1xxx_usb_gdt_device,
 	&au1xxx_usb_otg_device,
 	&au1200_lcd_device,
-	&au1xxx_mmc_device,
+	&au1200_mmc0_device,
+#ifndef CONFIG_MIPS_DB1200
+	&au1200_mmc1_device,
+#endif
 #endif
 #ifdef SMBUS_PSC_BASE
 	&pbdb_smbus_device,
diff --git a/arch/mips/au1000/pb1200/platform.c b/arch/mips/au1000/pb1200/platform.c
index f8fb0ae..878b780 100644
--- a/arch/mips/au1000/pb1200/platform.c
+++ b/arch/mips/au1000/pb1200/platform.c
@@ -20,9 +20,90 @@
 
 #include <linux/dma-mapping.h>
 #include <linux/init.h>
+#include <linux/leds.h>
 #include <linux/platform_device.h>
 
 #include <asm/mach-au1x00/au1xxx.h>
+#include <asm/mach-au1x00/au1100_mmc.h>
+
+static int mmc_activity;
+
+static void pb1200mmc0_set_power(void *mmc_host, int state)
+{
+	if (state)
+		bcsr->board |= BCSR_BOARD_SD0PWR;
+	else
+		bcsr->board &= ~BCSR_BOARD_SD0PWR;
+
+	au_sync_delay(1);
+}
+
+static int pb1200mmc0_card_readonly(void *mmc_host)
+{
+	return (bcsr->status & BCSR_STATUS_SD0WP) ? 1 : 0;
+}
+
+static int pb1200mmc0_card_inserted(void *mmc_host)
+{
+	return (bcsr->sig_status & BCSR_INT_SD0INSERT) ? 1 : 0;
+}
+
+static void pb1200_mmcled_set(struct led_classdev *led,
+			enum led_brightness brightness)
+{
+	if (brightness != LED_OFF) {
+		if (++mmc_activity == 1)
+			bcsr->disk_leds &= ~(1 << 8);
+	} else {
+		if (--mmc_activity == 0)
+			bcsr->disk_leds |= (1 << 8);
+	}
+}
+
+static struct led_classdev pb1200mmc_led = {
+	.brightness_set	= pb1200_mmcled_set,
+};
+
+#ifndef CONFIG_MIPS_DB1200
+static void pb1200mmc1_set_power(void *mmc_host, int state)
+{
+	if (state)
+		bcsr->board |= BCSR_BOARD_SD1PWR;
+	else
+		bcsr->board &= ~BCSR_BOARD_SD1PWR;
+
+	au_sync_delay(1);
+}
+
+static int pb1200mmc1_card_readonly(void *mmc_host)
+{
+	return (bcsr->status & BCSR_STATUS_SD1WP) ? 1 : 0;
+}
+
+static int pb1200mmc1_card_inserted(void *mmc_host)
+{
+	return (bcsr->sig_status & BCSR_INT_SD1INSERT) ? 1 : 0;
+}
+#endif
+
+const struct au1xmmc_platform_data au1xmmc_platdata[2] = {
+	[0] = {
+		.set_power	= pb1200mmc0_set_power,
+		.card_inserted	= pb1200mmc0_card_inserted,
+		.card_readonly	= pb1200mmc0_card_readonly,
+		.cd_setup	= NULL,		/* use poll-timer in driver */
+		.led		= &pb1200mmc_led,
+	},
+#ifndef CONFIG_MIPS_DB1200
+	[1] = {
+		.set_power	= pb1200mmc1_set_power,
+		.card_inserted	= pb1200mmc1_card_inserted,
+		.card_readonly	= pb1200mmc1_card_readonly,
+		.cd_setup	= NULL,		/* use poll-timer in driver */
+		.led		= &pb1200mmc_led,
+	},
+#endif
+};
 
 static struct resource ide_resources[] = {
 	[0] = {
-- 
1.5.5.4

Re: [PATCH 2/8] Alchemy: register mmc platform device for db1200/pb1200 boards.

[Pierre Ossman]

[-- Attachment #1: Type: text/plain, Size: 768 bytes --]

On Fri, 20 Jun 2008 18:12:39 +0200
Manuel Lauss <mano@roarinelk.homelinux.net> wrote:

> Hello Pierre,
> 
> On Fri, Jun 20, 2008 at 05:46:07PM +0200, Pierre Ossman wrote:
> > 
> > This patch does not apply against HEAD. Are you sure there aren't any
> > dependencies on what Ralf has in his tree? If so, perhaps this should
> > be in the MIPS tree.
> 
> It was broken by commit dab8c6deaf1d654d09c3de8bd4c286d424df255a which went
> in this week; here's another updated version of [PATCH 2/8].
> 

The problem is still Ralf's DMA constants fix. Ralf, should I simply
steal that patch from you?

-- 
     -- Pierre Ossman

  WARNING: This correspondence is being monitored by the
  Swedish government. Use end-to-end encryption where
  possible.

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 197 bytes --]

Re: [PATCH 2/8] Alchemy: register mmc platform device for db1200/pb1200 boards.

[Manuel Lauss]

Pierre Ossman wrote:
> On Fri, 20 Jun 2008 18:12:39 +0200
> Manuel Lauss <mano@roarinelk.homelinux.net> wrote:
> 
>> Hello Pierre,
>>
>> On Fri, Jun 20, 2008 at 05:46:07PM +0200, Pierre Ossman wrote:
>>> This patch does not apply against HEAD. Are you sure there aren't any
>>> dependencies on what Ralf has in his tree? If so, perhaps this should
>>> be in the MIPS tree.
>> It was broken by commit dab8c6deaf1d654d09c3de8bd4c286d424df255a which went
>> in this week; here's another updated version of [PATCH 2/8].
>>
> 
> The problem is still Ralf's DMA constants fix. Ralf, should I simply
> steal that patch from you?

Alternatively, Ralf could push patch 2/8 through the MIPS tree; the 
other MMC patches don't depend on it.  Worst case scenario is a that 
db1200 mmc won't work for a few revisions which would go unnoticed with 
99.9% probability, given the state of the rest of the au1000 code ;-)

Manuel Lauss

Re: [PATCH 2/8] Alchemy: register mmc platform device for db1200/pb1200 boards.

[Pierre Ossman]

[-- Attachment #1: Type: text/plain, Size: 756 bytes --]

On Fri, 20 Jun 2008 19:13:59 +0200
Manuel Lauss <mano@roarinelk.homelinux.net> wrote:

> Pierre Ossman wrote:
> > 
> > The problem is still Ralf's DMA constants fix. Ralf, should I simply
> > steal that patch from you?
> 
> Alternatively, Ralf could push patch 2/8 through the MIPS tree; the 
> other MMC patches don't depend on it.  Worst case scenario is a that 
> db1200 mmc won't work for a few revisions which would go unnoticed with 
> 99.9% probability, given the state of the rest of the au1000 code ;-)
> 

Fine with me. I'll queue up the rest of the patches for now.

Rgds
-- 
     -- Pierre Ossman

  WARNING: This correspondence is being monitored by the
  Swedish government. Use end-to-end encryption where
  possible.

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 197 bytes --]

[PATCH 3/8] au1xmmc: enable 4 bit transfer mode

[Manuel Lauss]

>From f05df3bb70a64b2996e2c8f1591be35a351959c2 Mon Sep 17 00:00:00 2001
From: Manuel Lauss <mlau@msc-ge.com>
Date: Sat, 17 May 2008 17:53:57 +0200
Subject: [PATCH] au1xmmc: enable 4 bit transfer mode

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
---
 drivers/mmc/host/au1xmmc.c |   22 +++++++++++++++++-----
 1 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index d8776d6..2bd4cf4 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -95,14 +95,13 @@ static inline void IRQ_OFF(struct au1xmmc_host *host, u32 mask)
 
 static inline void SEND_STOP(struct au1xmmc_host *host)
 {
-
-	/* We know the value of CONFIG2, so avoid a read we don't need */
-	u32 mask = SD_CONFIG2_EN;
+	u32 config2;
 
 	WARN_ON(host->status != HOST_S_DATA);
 	host->status = HOST_S_STOP;
 
-	au_writel(mask | SD_CONFIG2_DF, HOST_CONFIG2(host));
+	config2 = au_readl(HOST_CONFIG2(host));
+	au_writel(config2 | SD_CONFIG2_DF, HOST_CONFIG2(host));
 	au_sync();
 
 	/* Send the stop commmand */
@@ -697,6 +696,7 @@ static void au1xmmc_reset_controller(struct au1xmmc_host *host)
 static void au1xmmc_set_ios(struct mmc_host* mmc, struct mmc_ios* ios)
 {
 	struct au1xmmc_host *host = mmc_priv(mmc);
+	u32 config2;
 
 	if (ios->power_mode == MMC_POWER_OFF)
 		au1xmmc_set_power(host, 0);
@@ -708,6 +708,18 @@ static void au1xmmc_set_ios(struct mmc_host* mmc, struct mmc_ios* ios)
 		au1xmmc_set_clock(host, ios->clock);
 		host->clock = ios->clock;
 	}
+
+	config2 = au_readl(HOST_CONFIG2(host));
+	switch (ios->bus_width) {
+	case MMC_BUS_WIDTH_4:
+		config2 |= SD_CONFIG2_WB;
+		break;
+	case MMC_BUS_WIDTH_1:
+		config2 &= ~SD_CONFIG2_WB;
+		break;
+	}
+	au_writel(config2, HOST_CONFIG2(host));
+	au_sync();
 }
 
 #define STATUS_TIMEOUT (SD_STATUS_RAT | SD_STATUS_DT)
@@ -952,7 +964,7 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev)
 	mmc->max_blk_count = 512;
 
 	mmc->ocr_avail = AU1XMMC_OCR;
-	mmc->caps = 0;
+	mmc->caps = MMC_CAP_4_BIT_DATA;
 
 	host->status = HOST_S_IDLE;
 
-- 
1.5.5.3

[PATCH 4/8] au1xmmc: SDIO IRQ support.

[Manuel Lauss]

>From e4bbe21c402e8cdd3a1536db36779f3cae6d47d8 Mon Sep 17 00:00:00 2001
From: Manuel Lauss <mlau@msc-ge.com>
Date: Sat, 17 May 2008 17:58:52 +0200
Subject: [PATCH] au1xmmc: SDIO IRQ support

Wire up the SD controllers' SDIO IRQ capability.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
---
 drivers/mmc/host/au1xmmc.c |   16 +++++++++++++++-
 1 files changed, 15 insertions(+), 1 deletions(-)

diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index 2bd4cf4..16b5640 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -736,6 +736,9 @@ static irqreturn_t au1xmmc_irq(int irq, void *dev_id)
 	if (!(status & SD_STATUS_I))
 		return IRQ_NONE;	/* not ours */
 
+	if (status & SD_STATUS_SI)	/* SDIO */
+		mmc_signal_sdio_irq(host->mmc);
+
 	if (host->mrq && (status & STATUS_TIMEOUT)) {
 		if (status & SD_STATUS_RAT)
 			host->mrq->cmd->error = -ETIMEDOUT;
@@ -862,10 +865,21 @@ static void au1xmmc_dbdma_shutdown(struct au1xmmc_host *host)
 }
 #endif
 
+static void au1xmmc_enable_sdio_irq(struct mmc_host *mmc, int en)
+{
+	struct au1xmmc_host *host = mmc_priv(mmc);
+
+	if (en)
+		IRQ_ON(host, SD_CONFIG_SI);
+	else
+		IRQ_OFF(host, SD_CONFIG_SI);
+}
+
 static const struct mmc_host_ops au1xmmc_ops = {
 	.request	= au1xmmc_request,
 	.set_ios	= au1xmmc_set_ios,
 	.get_ro		= au1xmmc_card_readonly,
+	.enable_sdio_irq = au1xmmc_enable_sdio_irq,
 };
 
 static void au1xmmc_poll_event(unsigned long arg)
@@ -964,7 +978,7 @@ static int __devinit au1xmmc_probe(struct platform_device *pdev)
 	mmc->max_blk_count = 512;
 
 	mmc->ocr_avail = AU1XMMC_OCR;
-	mmc->caps = MMC_CAP_4_BIT_DATA;
+	mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ;
 
 	host->status = HOST_S_IDLE;
 
-- 
1.5.5.3

[PATCH 5/8] au1xmmc: codingstyle tidying.

[Manuel Lauss]

>From 629e26106e6fc0b653012e7229e3abd0bce554b2 Mon Sep 17 00:00:00 2001
From: Manuel Lauss <mlau@msc-ge.com>
Date: Sat, 17 May 2008 18:30:00 +0200
Subject: [PATCH] au1xmmc: codingstyle tidying

Clean up the codebase, no functional changes.
- merge the au1xmmc.h header contents into the driver file,
- indentation, spelling and style fixes.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
---
 drivers/mmc/host/au1xmmc.c |  233 ++++++++++++++++++++++++++-----------------
 drivers/mmc/host/au1xmmc.h |   97 ------------------
 2 files changed, 141 insertions(+), 189 deletions(-)
 delete mode 100644 drivers/mmc/host/au1xmmc.h

diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index 16b5640..fcbaf40 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -49,20 +49,104 @@
 #include <asm/mach-au1x00/au1xxx_dbdma.h>
 #include <asm/mach-au1x00/au1100_mmc.h>
 
-#include <au1xxx.h>
-#include "au1xmmc.h"
-
 #define DRIVER_NAME "au1xxx-mmc"
 
 /* Set this to enable special debugging macros */
 /* #define DEBUG */
 
 #ifdef DEBUG
-#define DBG(fmt, idx, args...) printk("au1xx(%d): DEBUG: " fmt, idx, ##args)
+#define DBG(fmt, idx, args...)	\
+	printk(KERN_DEBUG "au1xmmc(%d): DEBUG: " fmt, idx, ##args)
 #else
-#define DBG(fmt, idx, args...)
+#define DBG(fmt, idx, args...) do {} while (0)
 #endif
 
+/* Hardware definitions */
+#define AU1XMMC_DESCRIPTOR_COUNT 1
+#define AU1XMMC_DESCRIPTOR_SIZE  2048
+
+#define AU1XMMC_OCR (MMC_VDD_27_28 | MMC_VDD_28_29 | MMC_VDD_29_30 | \
+		     MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33 | \
+		     MMC_VDD_33_34 | MMC_VDD_34_35 | MMC_VDD_35_36)
+
+/* This gives us a hard value for the stop command that we can write directly
+ * to the command register.
+ */
+#define STOP_CMD	\
+	(SD_CMD_RT_1B | SD_CMD_CT_7 | (0xC << SD_CMD_CI_SHIFT) | SD_CMD_GO)
+
+/* This is the set of interrupts that we configure by default. */
+#define AU1XMMC_INTERRUPTS 				\
+	(SD_CONFIG_SC | SD_CONFIG_DT | SD_CONFIG_RAT |	\
+	 SD_CONFIG_CR | SD_CONFIG_I)
+
+/* The poll event (looking for insert/remove events runs twice a second. */
+#define AU1XMMC_DETECT_TIMEOUT (HZ/2)
+
+struct au1xmmc_host {
+	struct mmc_host *mmc;
+	struct mmc_request *mrq;
+
+	u32 flags;
+	u32 iobase;
+	u32 clock;
+	u32 bus_width;
+	u32 power_mode;
+
+	int status;
+
+	struct {
+		int len;
+		int dir;
+	} dma;
+
+	struct {
+		int index;
+		int offset;
+		int len;
+	} pio;
+
+	u32 tx_chan;
+	u32 rx_chan;
+
+	int irq;
+
+	struct timer_list timer;
+	struct tasklet_struct finish_task;
+	struct tasklet_struct data_task;
+	struct au1xmmc_platform_data *platdata;
+	struct platform_device *pdev;
+	struct resource *ioarea;
+};
+
+/* Status flags used by the host structure */
+#define HOST_F_XMIT	0x0001
+#define HOST_F_RECV	0x0002
+#define HOST_F_DMA	0x0010
+#define HOST_F_ACTIVE	0x0100
+#define HOST_F_STOP	0x1000
+
+#define HOST_S_IDLE	0x0001
+#define HOST_S_CMD	0x0002
+#define HOST_S_DATA	0x0003
+#define HOST_S_STOP	0x0004
+
+/* Easy access macros */
+#define HOST_STATUS(h)	((h)->iobase + SD_STATUS)
+#define HOST_CONFIG(h)	((h)->iobase + SD_CONFIG)
+#define HOST_ENABLE(h)	((h)->iobase + SD_ENABLE)
+#define HOST_TXPORT(h)	((h)->iobase + SD_TXPORT)
+#define HOST_RXPORT(h)	((h)->iobase + SD_RXPORT)
+#define HOST_CMDARG(h)	((h)->iobase + SD_CMDARG)
+#define HOST_BLKSIZE(h)	((h)->iobase + SD_BLKSIZE)
+#define HOST_CMD(h)	((h)->iobase + SD_CMD)
+#define HOST_CONFIG2(h)	((h)->iobase + SD_CONFIG2)
+#define HOST_TIMEOUT(h)	((h)->iobase + SD_TIMEOUT)
+#define HOST_DEBUG(h)	((h)->iobase + SD_DEBUG)
+
+#define DMA_CHANNEL(h)	\
+	(((h)->flags & HOST_F_XMIT) ? (h)->tx_chan : (h)->rx_chan)
+
 static inline void IRQ_ON(struct au1xmmc_host *host, u32 mask)
 {
 	u32 val = au_readl(HOST_CONFIG(host));
@@ -141,7 +225,6 @@ static int au1xmmc_card_readonly(struct mmc_host *mmc)
 
 static void au1xmmc_finish_request(struct au1xmmc_host *host)
 {
-
 	struct mmc_request *mrq = host->mrq;
 
 	host->mrq = NULL;
@@ -215,18 +298,14 @@ static int au1xmmc_send_command(struct au1xmmc_host *host, int wait,
 	au_sync();
 
 	/* Wait for the command to go on the line */
-
-	while(1) {
-		if (!(au_readl(HOST_CMD(host)) & SD_CMD_GO))
-			break;
-	}
+	while (au_readl(HOST_CMD(host)) & SD_CMD_GO)
+		/* nop */;
 
 	/* Wait for the command to come back */
-
 	if (wait) {
 		u32 status = au_readl(HOST_STATUS(host));
 
-		while(!(status & SD_STATUS_CR))
+		while (!(status & SD_STATUS_CR))
 			status = au_readl(HOST_STATUS(host));
 
 		/* Clear the CR status */
@@ -240,12 +319,11 @@ static int au1xmmc_send_command(struct au1xmmc_host *host, int wait,
 
 static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
 {
-
 	struct mmc_request *mrq = host->mrq;
 	struct mmc_data *data;
 	u32 crc;
 
-	WARN_ON(host->status != HOST_S_DATA && host->status != HOST_S_STOP);
+	WARN_ON((host->status != HOST_S_DATA) && (host->status != HOST_S_STOP));
 
 	if (host->mrq == NULL)
 		return;
@@ -256,15 +334,13 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
 		status = au_readl(HOST_STATUS(host));
 
 	/* The transaction is really over when the SD_STATUS_DB bit is clear */
-
-	while((host->flags & HOST_F_XMIT) && (status & SD_STATUS_DB))
+	while ((host->flags & HOST_F_XMIT) && (status & SD_STATUS_DB))
 		status = au_readl(HOST_STATUS(host));
 
 	data->error = 0;
 	dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, host->dma.dir);
 
         /* Process any errors */
-
 	crc = (status & (SD_STATUS_WC | SD_STATUS_RC));
 	if (host->flags & HOST_F_XMIT)
 		crc |= ((status & 0x07) == 0x02) ? 0 : 1;
@@ -282,15 +358,13 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
 #ifdef CONFIG_SOC_AU1200	/* DBDMA */
 			u32 chan = DMA_CHANNEL(host);
 
-			chan_tab_t *c = *((chan_tab_t **) chan);
+			chan_tab_t *c = *((chan_tab_t **)chan);
 			au1x_dma_chan_t *cp = c->chan_ptr;
 			data->bytes_xfered = cp->ddma_bytecnt;
 #endif
-		}
-		else
+		} else
 			data->bytes_xfered =
-				(data->blocks * data->blksz) -
-				host->pio.len;
+				(data->blocks * data->blksz) - host->pio.len;
 	}
 
 	au1xmmc_finish_request(host);
@@ -298,7 +372,7 @@ static void au1xmmc_data_complete(struct au1xmmc_host *host, u32 status)
 
 static void au1xmmc_tasklet_data(unsigned long param)
 {
-	struct au1xmmc_host *host = (struct au1xmmc_host *) param;
+	struct au1xmmc_host *host = (struct au1xmmc_host *)param;
 
 	u32 status = au_readl(HOST_STATUS(host));
 	au1xmmc_data_complete(host, status);
@@ -308,11 +382,10 @@ static void au1xmmc_tasklet_data(unsigned long param)
 
 static void au1xmmc_send_pio(struct au1xmmc_host *host)
 {
-
-	struct mmc_data *data = 0;
-	int sg_len, max, count = 0;
-	unsigned char *sg_ptr;
-	u32 status = 0;
+	struct mmc_data *data;
+	int sg_len, max, count;
+	unsigned char *sg_ptr, val;
+	u32 status;
 	struct scatterlist *sg;
 
 	data = host->mrq->data;
@@ -327,14 +400,12 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host)
 	/* This is the space left inside the buffer */
 	sg_len = data->sg[host->pio.index].length - host->pio.offset;
 
-	/* Check to if we need less then the size of the sg_buffer */
-
+	/* Check if we need less than the size of the sg_buffer */
 	max = (sg_len > host->pio.len) ? host->pio.len : sg_len;
-	if (max > AU1XMMC_MAX_TRANSFER) max = AU1XMMC_MAX_TRANSFER;
-
-	for(count = 0; count < max; count++ ) {
-		unsigned char val;
+	if (max > AU1XMMC_MAX_TRANSFER)
+		max = AU1XMMC_MAX_TRANSFER;
 
+	for (count = 0; count < max; count++) {
 		status = au_readl(HOST_STATUS(host));
 
 		if (!(status & SD_STATUS_TH))
@@ -342,7 +413,7 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host)
 
 		val = *sg_ptr++;
 
-		au_writel((unsigned long) val, HOST_TXPORT(host));
+		au_writel((unsigned long)val, HOST_TXPORT(host));
 		au_sync();
 	}
 
@@ -366,11 +437,10 @@ static void au1xmmc_send_pio(struct au1xmmc_host *host)
 
 static void au1xmmc_receive_pio(struct au1xmmc_host *host)
 {
-
-	struct mmc_data *data = 0;
-	int sg_len = 0, max = 0, count = 0;
-	unsigned char *sg_ptr = 0;
-	u32 status = 0;
+	struct mmc_data *data;
+	int max, count, sg_len = 0;
+	unsigned char *sg_ptr = NULL;
+	u32 status, val;
 	struct scatterlist *sg;
 
 	data = host->mrq->data;
@@ -387,15 +457,15 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
 		/* This is the space left inside the buffer */
 		sg_len = sg_dma_len(&data->sg[host->pio.index]) - host->pio.offset;
 
-		/* Check to if we need less then the size of the sg_buffer */
-		if (sg_len < max) max = sg_len;
+		/* Check if we need less than the size of the sg_buffer */
+		if (sg_len < max)
+			max = sg_len;
 	}
 
 	if (max > AU1XMMC_MAX_TRANSFER)
 		max = AU1XMMC_MAX_TRANSFER;
 
-	for(count = 0; count < max; count++ ) {
-		u32 val;
+	for (count = 0; count < max; count++) {
 		status = au_readl(HOST_STATUS(host));
 
 		if (!(status & SD_STATUS_NE))
@@ -421,7 +491,7 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
 		val = au_readl(HOST_RXPORT(host));
 
 		if (sg_ptr)
-			*sg_ptr++ = (unsigned char) (val & 0xFF);
+			*sg_ptr++ = (unsigned char)(val & 0xFF);
 	}
 
 	host->pio.len -= count;
@@ -433,7 +503,7 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
 	}
 
 	if (host->pio.len == 0) {
-		//IRQ_OFF(host, SD_CONFIG_RA | SD_CONFIG_RF);
+		/* IRQ_OFF(host, SD_CONFIG_RA | SD_CONFIG_RF); */
 		IRQ_OFF(host, SD_CONFIG_NE);
 
 		if (host->flags & HOST_F_STOP)
@@ -443,17 +513,15 @@ static void au1xmmc_receive_pio(struct au1xmmc_host *host)
 	}
 }
 
-/* static void au1xmmc_cmd_complete
-   This is called when a command has been completed - grab the response
-   and check for errors.  Then start the data transfer if it is indicated.
-*/
-
+/* This is called when a command has been completed - grab the response
+ * and check for errors.  Then start the data transfer if it is indicated.
+ */
 static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 {
-
 	struct mmc_request *mrq = host->mrq;
 	struct mmc_command *cmd;
-	int trans;
+	u32 r[4];
+	int i, trans;
 
 	if (!host->mrq)
 		return;
@@ -463,9 +531,6 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 
 	if (cmd->flags & MMC_RSP_PRESENT) {
 		if (cmd->flags & MMC_RSP_136) {
-			u32 r[4];
-			int i;
-
 			r[0] = au_readl(host->iobase + SD_RESP3);
 			r[1] = au_readl(host->iobase + SD_RESP2);
 			r[2] = au_readl(host->iobase + SD_RESP1);
@@ -473,10 +538,9 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 
 			/* The CRC is omitted from the response, so really
 			 * we only got 120 bytes, but the engine expects
-			 * 128 bits, so we have to shift things up
+			 * 128 bits, so we have to shift things up.
 			 */
-
-			for(i = 0; i < 4; i++) {
+			for (i = 0; i < 4; i++) {
 				cmd->resp[i] = (r[i] & 0x00FFFFFF) << 8;
 				if (i != 3)
 					cmd->resp[i] |= (r[i + 1] & 0xFF000000) >> 24;
@@ -487,22 +551,20 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 			 * our response omits the CRC, our data ends up
 			 * being shifted 8 bits to the right.  In this case,
 			 * that means that the OSR data starts at bit 31,
-			 * so we can just read RESP0 and return that
+			 * so we can just read RESP0 and return that.
 			 */
 			cmd->resp[0] = au_readl(host->iobase + SD_RESP0);
 		}
 	}
 
         /* Figure out errors */
-
 	if (status & (SD_STATUS_SC | SD_STATUS_WC | SD_STATUS_RC))
 		cmd->error = -EILSEQ;
 
 	trans = host->flags & (HOST_F_XMIT | HOST_F_RECV);
 
 	if (!trans || cmd->error) {
-
-		IRQ_OFF(host, SD_CONFIG_TH | SD_CONFIG_RA|SD_CONFIG_RF);
+		IRQ_OFF(host, SD_CONFIG_TH | SD_CONFIG_RA | SD_CONFIG_RF);
 		tasklet_schedule(&host->finish_task);
 		return;
 	}
@@ -529,18 +591,15 @@ static void au1xmmc_cmd_complete(struct au1xmmc_host *host, u32 status)
 
 static void au1xmmc_set_clock(struct au1xmmc_host *host, int rate)
 {
-
 	unsigned int pbus = get_au1x00_speed();
 	unsigned int divisor;
 	u32 config;
 
 	/* From databook:
-	   divisor = ((((cpuclock / sbus_divisor) / 2) / mmcclock) / 2) - 1
-	*/
-
+	 * divisor = ((((cpuclock / sbus_divisor) / 2) / mmcclock) / 2) - 1
+	 */
 	pbus /= ((au_readl(SYS_POWERCTRL) & 0x3) + 2);
 	pbus /= 2;
-
 	divisor = ((pbus / rate) / 2) - 1;
 
 	config = au_readl(HOST_CONFIG(host));
@@ -552,8 +611,8 @@ static void au1xmmc_set_clock(struct au1xmmc_host *host, int rate)
 	au_sync();
 }
 
-static int
-au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
+static int au1xmmc_prepare_data(struct au1xmmc_host *host,
+				struct mmc_data *data)
 {
 	int datalen = data->blocks * data->blksz;
 
@@ -582,7 +641,7 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
 
 		au1xxx_dbdma_stop(channel);
 
-		for(i = 0; i < host->dma.len; i++) {
+		for (i = 0; i < host->dma.len; i++) {
 			u32 ret = 0, flags = DDMA_FLAGS_NOIE;
 			struct scatterlist *sg = &data->sg[i];
 			int sg_len = sg->length;
@@ -592,14 +651,12 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
 			if (i == host->dma.len - 1)
 				flags = DDMA_FLAGS_IE;
 
-    			if (host->flags & HOST_F_XMIT){
-      				ret = au1xxx_dbdma_put_source_flags(channel,
-					(void *) sg_virt(sg), len, flags);
-			}
-    			else {
-      				ret = au1xxx_dbdma_put_dest_flags(channel,
-					(void *) sg_virt(sg),
-					len, flags);
+			if (host->flags & HOST_F_XMIT) {
+				ret = au1xxx_dbdma_put_source_flags(channel,
+					(void *)sg_virt(sg), len, flags);
+			} else {
+				ret = au1xxx_dbdma_put_dest_flags(channel,
+					(void *)sg_virt(sg), len, flags);
 			}
 
 			if (!ret)
@@ -608,8 +665,7 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
 			datalen -= len;
 		}
 #endif
-	}
-	else {
+	} else {
 		host->pio.index = 0;
 		host->pio.offset = 0;
 		host->pio.len = datalen;
@@ -618,7 +674,7 @@ au1xmmc_prepare_data(struct au1xmmc_host *host, struct mmc_data *data)
 			IRQ_ON(host, SD_CONFIG_TH);
 		else
 			IRQ_ON(host, SD_CONFIG_NE);
-			//IRQ_ON(host, SD_CONFIG_RA|SD_CONFIG_RF);
+			/* IRQ_ON(host, SD_CONFIG_RA | SD_CONFIG_RF); */
 	}
 
 	return 0;
@@ -629,15 +685,10 @@ dataerr:
 	return -ETIMEDOUT;
 }
 
-/* static void au1xmmc_request
-   This actually starts a command or data transaction
-*/
-
+/* This actually starts a command or data transaction */
 static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq)
 {
-
 	struct au1xmmc_host *host = mmc_priv(mmc);
-	unsigned int flags = 0;
 	int ret = 0;
 
 	WARN_ON(irqs_disabled());
@@ -648,7 +699,6 @@ static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq)
 
 	if (mrq->data) {
 		FLUSH_FIFO(host);
-		flags = mrq->data->flags;
 		ret = au1xmmc_prepare_data(host, mrq->data);
 	}
 
@@ -663,7 +713,6 @@ static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq)
 
 static void au1xmmc_reset_controller(struct au1xmmc_host *host)
 {
-
 	/* Apply the clock */
 	au_writel(SD_ENABLE_CE, HOST_ENABLE(host));
         au_sync_delay(1);
@@ -693,7 +742,7 @@ static void au1xmmc_reset_controller(struct au1xmmc_host *host)
 }
 
 
-static void au1xmmc_set_ios(struct mmc_host* mmc, struct mmc_ios* ios)
+static void au1xmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 {
 	struct au1xmmc_host *host = mmc_priv(mmc);
 	u32 config2;
diff --git a/drivers/mmc/host/au1xmmc.h b/drivers/mmc/host/au1xmmc.h
deleted file mode 100644
index 3b40065..0000000
--- a/drivers/mmc/host/au1xmmc.h
+++ /dev/null
@@ -1,97 +0,0 @@
-#ifndef _AU1XMMC_H_
-#define _AU1XMMC_H_
-
-/* Hardware definitions */
-
-#define AU1XMMC_DESCRIPTOR_COUNT 1
-#define AU1XMMC_DESCRIPTOR_SIZE  2048
-
-#define AU1XMMC_OCR ( MMC_VDD_27_28 | MMC_VDD_28_29 | MMC_VDD_29_30  | \
-		      MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33  | \
-		      MMC_VDD_33_34 | MMC_VDD_34_35 | MMC_VDD_35_36)
-
-/* Easy access macros */
-
-#define HOST_STATUS(h)	((h)->iobase + SD_STATUS)
-#define HOST_CONFIG(h)	((h)->iobase + SD_CONFIG)
-#define HOST_ENABLE(h)	((h)->iobase + SD_ENABLE)
-#define HOST_TXPORT(h)	((h)->iobase + SD_TXPORT)
-#define HOST_RXPORT(h)	((h)->iobase + SD_RXPORT)
-#define HOST_CMDARG(h)	((h)->iobase + SD_CMDARG)
-#define HOST_BLKSIZE(h)	((h)->iobase + SD_BLKSIZE)
-#define HOST_CMD(h)	((h)->iobase + SD_CMD)
-#define HOST_CONFIG2(h)	((h)->iobase + SD_CONFIG2)
-#define HOST_TIMEOUT(h)	((h)->iobase + SD_TIMEOUT)
-#define HOST_DEBUG(h)	((h)->iobase + SD_DEBUG)
-
-#define DMA_CHANNEL(h) \
-	( ((h)->flags & HOST_F_XMIT) ? (h)->tx_chan : (h)->rx_chan)
-
-/* This gives us a hard value for the stop command that we can write directly
- * to the command register
- */
-
-#define STOP_CMD (SD_CMD_RT_1B|SD_CMD_CT_7|(0xC << SD_CMD_CI_SHIFT)|SD_CMD_GO)
-
-/* This is the set of interrupts that we configure by default */
-
-#if 0
-#define AU1XMMC_INTERRUPTS (SD_CONFIG_SC | SD_CONFIG_DT | SD_CONFIG_DD | \
-		SD_CONFIG_RAT | SD_CONFIG_CR | SD_CONFIG_I)
-#endif
-
-#define AU1XMMC_INTERRUPTS (SD_CONFIG_SC | SD_CONFIG_DT | \
-		SD_CONFIG_RAT | SD_CONFIG_CR | SD_CONFIG_I)
-/* The poll event (looking for insert/remove events runs twice a second */
-#define AU1XMMC_DETECT_TIMEOUT (HZ/2)
-
-struct au1xmmc_host {
-  struct mmc_host *mmc;
-  struct mmc_request *mrq;
-
-  u32 flags;
-  u32 iobase;
-  u32 clock;
-  u32 bus_width;
-  u32 power_mode;
-
-  int status;
-
-   struct {
-	   int len;
-	   int dir;
-  } dma;
-
-   struct {
-	   int index;
-	   int offset;
-	   int len;
-  } pio;
-
-  u32 tx_chan;
-  u32 rx_chan;
-
-  int irq;
-
-  struct timer_list timer;
-  struct tasklet_struct finish_task;
-  struct tasklet_struct data_task;
-  struct au1xmmc_platform_data *platdata;
-  struct platform_device *pdev;
-  struct resource *ioarea;
-};
-
-/* Status flags used by the host structure */
-
-#define HOST_F_XMIT   0x0001
-#define HOST_F_RECV   0x0002
-#define HOST_F_DMA    0x0010
-#define HOST_F_ACTIVE 0x0100
-#define HOST_F_STOP   0x1000
-
-#define HOST_S_IDLE   0x0001
-#define HOST_S_CMD    0x0002
-#define HOST_S_DATA   0x0003
-#define HOST_S_STOP   0x0004
-
-#endif
-- 
1.5.5.3

[PATCH 6/8] au1xmmc: abort requests early if no card is present.

[Manuel Lauss]

>From a478fbe20735b832696ba4cc0d3d21eb7371e689 Mon Sep 17 00:00:00 2001
From: Manuel Lauss <mlau@msc-ge.com>
Date: Sun, 18 May 2008 15:52:43 +0200
Subject: [PATCH] au1xmmc: abort requests early if no card is present

Don't process an MMC request if no card is present.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
---
 drivers/mmc/host/au1xmmc.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index fcbaf40..718eb87 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -697,6 +697,13 @@ static void au1xmmc_request(struct mmc_host* mmc, struct mmc_request* mrq)
 	host->mrq = mrq;
 	host->status = HOST_S_CMD;
 
+	/* fail request immediately if no card is present */
+	if (0 == au1xmmc_card_inserted(host)) {
+		mrq->cmd->error = -ENOMEDIUM;
+		au1xmmc_finish_request(host);
+		return;
+	}
+
 	if (mrq->data) {
 		FLUSH_FIFO(host);
 		ret = au1xmmc_prepare_data(host, mrq->data);
-- 
1.5.5.3

[PATCH 7/8] Alchemy: remove unused MMC macros from db1x00 header.

[Manuel Lauss]

>From c637a7ed8d8d3cf845aca7775923df1076e06b8d Mon Sep 17 00:00:00 2001
From: Manuel Lauss <mano@roarinelk.homelinux.net>
Date: Wed, 21 May 2008 15:13:51 +0200
Subject: [PATCH] Alchemy: remove unused MMC macros from db1x00 header.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
---
 include/asm-mips/mach-db1x00/db1x00.h |   45 ---------------------------------
 1 files changed, 0 insertions(+), 45 deletions(-)

diff --git a/include/asm-mips/mach-db1x00/db1x00.h b/include/asm-mips/mach-db1x00/db1x00.h
index 612ae90..1a515b8 100644
--- a/include/asm-mips/mach-db1x00/db1x00.h
+++ b/include/asm-mips/mach-db1x00/db1x00.h
@@ -146,51 +146,6 @@ typedef volatile struct
 	((((VCC) << 2) | ((VPP) << 0)) << ((SLOT) * 8))
 
 /*
- * SD controller macros
- */
-
-/* Detect card. */
-#define mmc_card_inserted(_n_, _res_) \
-	do { \
-		BCSR * const bcsr = (BCSR *)0xAE000000; \
-		unsigned long mmc_wp, board_specific; \
-		if ((_n_)) { \
-			mmc_wp = BCSR_BOARD_SD1_WP; \
-		} else { \
-			mmc_wp = BCSR_BOARD_SD0_WP; \
-		} \
-		board_specific = au_readl((unsigned long)(&bcsr->specific)); \
-		if (!(board_specific & mmc_wp)) {/* low means card present */ \
-			*(int *)(_res_) = 1; \
-		} else { \
-			*(int *)(_res_) = 0; \
-		} \
-	} while (0)
-
-/*
- * Apply power to card slot(s).
- */
-#define mmc_power_on(_n_) \
-	do { \
-		BCSR * const bcsr = (BCSR *)0xAE000000; \
-		unsigned long mmc_pwr, mmc_wp, board_specific; \
-		if ((_n_)) { \
-			mmc_pwr = BCSR_BOARD_SD1_PWR; \
-			mmc_wp	= BCSR_BOARD_SD1_WP; \
-		} else { \
-			mmc_pwr = BCSR_BOARD_SD0_PWR; \
-			mmc_wp	= BCSR_BOARD_SD0_WP; \
-		} \
-		board_specific = au_readl((unsigned long)(&bcsr->specific)); \
-		if (!(board_specific & mmc_wp)) {/* low means card present */ \
-			board_specific |= mmc_pwr; \
-			au_writel(board_specific, (int)(&bcsr->specific)); \
-			au_sync(); \
-		} \
-	} while (0)
-
-
-/*
  * NAND defines
  *
  * Timing values as described in databook, * ns value stripped of the
-- 
1.5.5.3

Re: [PATCH 7/8] Alchemy: remove unused MMC macros from db1x00 header.

[Ralf Baechle]

On Mon, Jun 09, 2008 at 08:39:58AM +0200, Manuel Lauss wrote:
> From: Manuel Lauss <mano@roarinelk.homelinux.net>
> Date: Mon, 9 Jun 2008 08:39:58 +0200
> To: linux-mips@linux-mips.org, sshtylyov@ru.mvista.com, drzeus@drzeus.cx,
> 	linux-kernel@vger.kernel.org
> Subject: [PATCH 7/8] Alchemy: remove unused MMC macros from db1x00 header.
> Content-Type: text/plain; charset=us-ascii

Okay for this one.  Since it's independant of the others I will put it
into the 2.6.27 queue.  Thanks,

  Ralf

[PATCH 8/8] au1xmmc: new maintainer.

[Manuel Lauss]

>From dbed5b9f5b1107ed77f4e577486f1fd1131ad0a4 Mon Sep 17 00:00:00 2001
From: Manuel Lauss <mano@roarinelk.homelinux.net>
Date: Fri, 6 Jun 2008 20:31:20 +0200
Subject: [PATCH] au1xmmc: new maintainer

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
---
 MAINTAINERS |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/MAINTAINERS b/MAINTAINERS
index 99f5665..b9e3b0d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -348,7 +348,9 @@ W:	http://www.linux-usb.org/SpeedTouch/
 S:	Maintained
 
 ALCHEMY AU1XX0 MMC DRIVER
-S:	Orphan
+P:	Manuel Lauss
+M:	manuel.lauss@gmail.com
+S:	Maintained
 
 ALI1563 I2C DRIVER
 P:	Rudolf Marek
-- 
1.5.5.3