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Date: Wed, 7 May 2008 18:05:40 +0200
From: Manuel Lauss <mano@...rinelk.homelinux.net>
To: linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/7] au1xmmc: remove db1x00 specific functions and platform
device conversion
>From 8dc23d568939c8c12c358ee063fd38e8093d3c6f Mon Sep 17 00:00:00 2001
From: Manuel Lauss <mlau@...-ge.com>
Date: Wed, 7 May 2008 14:57:01 +0200
Subject: [PATCH] au1xmmc: remove db1x00 board-specific functions from driver
Remove the DB1200 board-specific functions (card present, read-only
methods) and instead add platform data which is passed to the driver.
With the board-specific stuff gone, the driver no longer needs to know
how many physical controllers the silicon actually has; every device
can be registered as needed, update the code as necessary.
Signed-off-by: Manuel Lauss <mano@...rinelk.homelinux.net>
---
drivers/mmc/host/au1xmmc.c | 494 ++++++++++++++++++-----------
drivers/mmc/host/au1xmmc.h | 96 ------
include/asm-mips/mach-au1x00/au1100_mmc.h | 43 +++-
3 files changed, 338 insertions(+), 295 deletions(-)
delete mode 100644 drivers/mmc/host/au1xmmc.h
diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
index cc5f7bc..17870cd 100644
--- a/drivers/mmc/host/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -49,7 +49,6 @@
#include <asm/mach-au1x00/au1100_mmc.h>
#include <au1xxx.h>
-#include "au1xmmc.h"
#define DRIVER_NAME "au1xxx-mmc"
@@ -61,31 +60,71 @@
#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 }
+#define AU1XMMC_DESCRIPTOR_COUNT 1
+#define AU1XMMC_DESCRIPTOR_SIZE 4096
+
+#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)->dma.tx_chan : (h)->dma.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_CONTROLLER_COUNT (ARRAY_SIZE(au1xmmc_card_table))
+#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)
+
+/* 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
-/* 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
+
+/* 8bit memory device */
+static dbdev_tab_t au1xmmc_mem_dbdev = {
+ DSCR_CMD0_ALWAYS, DEV_FLAGS_ANYUSE, 0, 8, 0x00000000, 0, 0
+};
+static int memid;
+
static inline void IRQ_ON(struct au1xmmc_host *host, u32 mask)
{
@@ -135,31 +174,37 @@ 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 = 1; /* assume card is read-only */
+
+ return ret;
}
static void au1xmmc_finish_request(struct au1xmmc_host *host)
{
-
struct mmc_request *mrq = host->mrq;
host->mrq = NULL;
@@ -174,8 +219,6 @@ 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);
}
@@ -663,7 +706,9 @@ 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);
+ au_writel(0, HOST_STATUS(host));
+ au_sync();
+ FLUSH_FIFO(host);
if (mrq->data) {
FLUSH_FIFO(host);
@@ -749,118 +794,87 @@ static void au1xmmc_dma_callback(int irq, void *dev_id)
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 & (1<<15)))
+ 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;
}
+#endif
+ else if (status & (SD_STATUS_CR)) {
+ if (host->status == HOST_S_CMD)
+ au1xmmc_cmd_complete(host,status);
- 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;
+ } 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);
- if (card != controller) {
- host->flags &= ~HOST_F_ACTIVE;
- if (card) host->flags |= HOST_F_ACTIVE;
- mmc_detect_change(host->mmc, 0);
+ } else if (status & 0x203FBC70) {
+ DBG("Unhandled status %8.8x\n", host->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
-};
-
-static void au1xmmc_init_dma(struct au1xmmc_host *host)
+static int au1xmmc_init_dma(struct au1xmmc_host *host)
{
-
+ struct resource *res;
u32 rxchan, txchan;
+ int txid, rxid;
- int txid = au1xmmc_card_table[host->id].tx_devid;
- int rxid = au1xmmc_card_table[host->id].rx_devid;
-
- /* 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
- */
+ res = platform_get_resource(host->pdev, IORESOURCE_DMA, 0);
+ if (!res)
+ return -ENODEV;
+ txid = res->start;
- int memid = au1xxx_ddma_add_device(&au1xmmc_mem_dbdev);
+ res = platform_get_resource(host->pdev, IORESOURCE_DMA, 1);
+ if (!res)
+ return -ENODEV;
+ rxid = res->start;
txchan = au1xxx_dbdma_chan_alloc(memid, txid,
- au1xmmc_dma_callback, (void *) host);
+ au1xmmc_dma_callback, (void *)host);
+ if (!txchan) {
+ dev_err(&host->pdev->dev, "cannot allocate TX DMA\n");
+ return -ENODEV;
+ }
rxchan = au1xxx_dbdma_chan_alloc(rxid, memid,
- au1xmmc_dma_callback, (void *) host);
+ au1xmmc_dma_callback, (void *)host);
+ if (!rxchan) {
+ dev_err(&host->pdev->dev, "cannot allocate RX DMA\n");
+ au1xxx_dbdma_chan_free(txchan);
+ return -ENODEV;
+ }
au1xxx_dbdma_set_devwidth(txchan, 8);
au1xxx_dbdma_set_devwidth(rxchan, 8);
@@ -868,8 +882,10 @@ static void au1xmmc_init_dma(struct au1xmmc_host *host)
au1xxx_dbdma_ring_alloc(txchan, AU1XMMC_DESCRIPTOR_COUNT);
au1xxx_dbdma_ring_alloc(rxchan, AU1XMMC_DESCRIPTOR_COUNT);
- host->tx_chan = txchan;
- host->rx_chan = rxchan;
+ host->dma.tx_chan = txchan;
+ host->dma.rx_chan = rxchan;
+
+ return 0;
}
static const struct mmc_host_ops au1xmmc_ops = {
@@ -878,116 +894,197 @@ 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 i, ret = 0;
+ int card = au1xmmc_card_inserted(host);
+ int controller = (host->flags & HOST_F_ACTIVE) ? 1 : 0;
- /* THe interrupt is shared among all controllers */
- ret = request_irq(AU1100_SD_IRQ, au1xmmc_irq, IRQF_DISABLED, "MMC", 0);
+ if (card != controller) {
+ host->flags &= ~HOST_F_ACTIVE;
+ if (card)
+ host->flags |= HOST_F_ACTIVE;
+ mmc_detect_change(host->mmc, 0);
+ }
- if (ret) {
- printk(DRIVER_NAME "ERROR: Couldn't get int %d: %d\n",
- AU1100_SD_IRQ, ret);
- return -ENXIO;
+#if 0
+ if (host->mrq != NULL) {
+ u32 status = au_readl(HOST_STATUS(host));
+ DBG("PENDING - %8.8x\n", host->id, status);
}
+#endif
+ mod_timer(&host->timer, jiffies + AU1XMMC_DETECT_TIMEOUT);
+}
- disable_irq(AU1100_SD_IRQ);
+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;
+}
- 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;
+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;
+ }
- if (!mmc) {
- printk(DRIVER_NAME "ERROR: no mem for host %d\n", i);
- au1xmmc_hosts[i] = 0;
- continue;
- }
+ host = mmc_priv(mmc);
+ host->mmc = mmc;
+ host->platdata = pdev->dev.platform_data;
+ host->pdev = pdev;
- mmc->ops = &au1xmmc_ops;
+ ret = -ENODEV;
+ r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!r) {
+ dev_err(&pdev->dev, "no mmio defined\n");
+ goto out1;
+ }
+ host->iobase = (unsigned long)ioremap(r->start, 0xff);
+ if (!host->iobase) {
+ dev_err(&pdev->dev, "cannot remap mmio\n");
+ goto out1;
+ }
- mmc->f_min = 450000;
- mmc->f_max = 24000000;
+ r = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!r) {
+ dev_err(&pdev->dev, "no IRQ defined\n");
+ goto out2;
+ }
- mmc->max_seg_size = AU1XMMC_DESCRIPTOR_SIZE;
- mmc->max_phys_segs = AU1XMMC_DESCRIPTOR_COUNT;
+ 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 out2;
+ }
- mmc->max_blk_size = 2048;
- mmc->max_blk_count = 512;
+ mmc->ops = &au1xmmc_ops;
- mmc->ocr_avail = AU1XMMC_OCR;
+ mmc->f_min = 450000;
+ mmc->f_max = 24000000;
- host = mmc_priv(mmc);
- host->mmc = mmc;
+ mmc->max_seg_size = AU1XMMC_DESCRIPTOR_SIZE;
+ mmc->max_phys_segs = AU1XMMC_DESCRIPTOR_COUNT;
- host->id = i;
- host->iobase = au1xmmc_card_table[host->id].iobase;
- host->clock = 0;
- host->power_mode = MMC_POWER_OFF;
+ mmc->max_blk_size = 2048;
+ mmc->max_blk_count = 512;
- host->flags = au1xmmc_card_inserted(host) ? HOST_F_ACTIVE : 0;
- host->status = HOST_S_IDLE;
+ mmc->ocr_avail = AU1XMMC_OCR;
+ mmc->caps = 0;
- init_timer(&host->timer);
+ host->id = pdev->id;
+ host->status = HOST_S_IDLE;
- host->timer.function = au1xmmc_poll_event;
- host->timer.data = (unsigned long) host;
- host->timer.expires = jiffies + AU1XMMC_DETECT_TIMEOUT;
+ /* 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 out3;
+ }
+ } else {
+ /* poll the board-specific card-is-in-socket method */
+ au1xmmc_init_cd_poll_timer(host);
+ }
- 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);
- spin_lock_init(&host->lock);
+ if (dma) {
+ ret = au1xmmc_init_dma(host);
+ if (ret)
+ goto out4;
+ }
- 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 out5;
+ }
- mmc_add_host(mmc);
- au1xmmc_hosts[i] = host;
+ platform_set_drvdata(pdev, mmc);
+ /* start the carddetect poll timer */
+ 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, dma ? "dma" : "pio");
- enable_irq(AU1100_SD_IRQ);
+ return 0; /* all ok */
- return 0;
+out5:
+ if (dma) {
+ au1xxx_dbdma_chan_free(host->dma.tx_chan);
+ au1xxx_dbdma_chan_free(host->dma.rx_chan);
+ }
+out4:
+ tasklet_kill(&host->data_task);
+ tasklet_kill(&host->finish_task);
+
+ if (host->platdata && host->platdata->cd_setup)
+ host->platdata->cd_setup(mmc, 0);
+out3:
+ free_irq(host->irq, host);
+out2:
+ iounmap((void *)host->iobase);
+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;
- int i;
+ if (mmc) {
+ host = mmc_priv(mmc);
- 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_sync();
tasklet_kill(&host->data_task);
tasklet_kill(&host->finish_task);
- del_timer_sync(&host->timer);
au1xmmc_set_power(host, 0);
- mmc_remove_host(host->mmc);
+ free_irq(host->irq, host);
- au1xxx_dbdma_chan_free(host->tx_chan);
- au1xxx_dbdma_chan_free(host->rx_chan);
+ mmc_remove_host(mmc);
- au_writel(0x0, HOST_ENABLE(host));
- au_sync();
- }
+ if (dma) {
+ au1xxx_dbdma_chan_free(host->dma.tx_chan);
+ au1xxx_dbdma_chan_free(host->dma.rx_chan);
+ }
- free_irq(AU1100_SD_IRQ, 0);
+ mmc_free_host(mmc);
+ }
return 0;
}
@@ -1004,21 +1101,32 @@ static struct platform_driver au1xmmc_driver = {
static int __init au1xmmc_init(void)
{
+ if (dma) {
+ /* 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
+ */
+ if (!memid)
+ memid = au1xxx_ddma_add_device(&au1xmmc_mem_dbdev);
+ if (!memid) {
+ printk(KERN_ERR "au1xmmc: cannot add memory dma dev\n");
+ return -ENODEV;
+ }
+ }
return platform_driver_register(&au1xmmc_driver);
}
static void __exit au1xmmc_exit(void)
{
+ if (dma && memid)
+ au1xxx_ddma_del_device(memid);
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
deleted file mode 100644
index 341cbdf..0000000
--- a/drivers/mmc/host/au1xmmc.h
+++ /dev/null
@@ -1,96 +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 id;
-
- 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;
-
- struct timer_list timer;
- struct tasklet_struct finish_task;
- struct tasklet_struct data_task;
-
- spinlock_t lock;
-};
-
-/* 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
diff --git a/include/asm-mips/mach-au1x00/au1100_mmc.h b/include/asm-mips/mach-au1x00/au1100_mmc.h
index 9e0028f..6474fac 100644
--- a/include/asm-mips/mach-au1x00/au1100_mmc.h
+++ b/include/asm-mips/mach-au1x00/au1100_mmc.h
@@ -38,15 +38,46 @@
#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
-
+struct au1xmmc_platdata {
+ 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 au1xmmc_host {
+ struct mmc_host *mmc;
+ struct mmc_request *mrq;
+
+ u32 id;
+
+ u32 flags;
+ u32 iobase;
+ u32 clock;
+
+ int status;
+
+ struct {
+ int len;
+ int dir;
+ u32 tx_chan;
+ u32 rx_chan;
+ } dma;
+
+ struct {
+ int index;
+ int offset;
+ int len;
+ } pio;
+
+ struct timer_list timer;
+ struct tasklet_struct finish_task;
+ struct tasklet_struct data_task;
+
+ struct platform_device *pdev;
+ struct au1xmmc_platdata *platdata;
+ int irq;
+};
#define SD0_BASE 0xB0600000
#define SD1_BASE 0xB0680000
--
1.5.5.1
--
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