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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-25 12:06:33 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-25 12:06:33 -0700
commitec96e2fe954c23a54bfdf2673437a39e193a1822 (patch)
treee4041c68ef20a3337c56aefc8db785156307edd1 /drivers
parent8e9815a0f8882aaa68645b001bb7538db8886802 (diff)
parentf949c0edd84101bfd30b3e7389c1a12b067e561d (diff)
downloadlinux-linaro-ec96e2fe954c23a54bfdf2673437a39e193a1822.tar.gz
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (103 commits) ARM: 6141/1: Add audio support part in arch/arm/mach-w90x900 ARM: 5939/1: ARM: Add option CMDLINE_FORCE to force usage of the in-kernel cmdline ARM: 6140/1: silence a bogus sparse warning in unwind.c ARM: mach-at91: duplicated include ARM: arch/arm/nwfpe/fpsr.h: Checkpatch cleanup ARM: arch/arm/mach-shark/pci.c: Checkpatch cleanup ARM: arch/arm/nwfpe/ChangeLog: Checkpatch cleanup ARM: arch/arm/mach-sa1100/leds.c: Checkpatch cleanup ARM: arch/arm/mach-h720x/common.h: Checkpatch cleanup ARM: arch/arm/mach-footbridge/ebsa285-pci.c: Checkpatch cleanup ARM: arch/arm/mach-clps711x/Makefile.boot: Checkpatch cleanup ARM: arch/arm/boot/bootp/bootp.lds: Checkpatch cleanup ARM: SPEAR6xx: remove duplicated #include ARM: s3c6400_defconfig: Add NAND driver ARM: s3c6400_defconfig: enable sound as modules ARM: s3c6400_defconfig: enable power management ARM: s5pv210_defconfig: Update s5pv210_defconfig to v2.6.34 ARM: s5pc110_defconfig: Update s5pc110_defconfig to v2.6.34 ARM: s5p6442_defconfig: Update s5p6442_defconfig to v2.6.34 ARM: s5p6440_defconfig: Update s5p6440_defconfig to v2.6.34 ...
Diffstat (limited to 'drivers')
-rw-r--r--drivers/char/hw_random/nomadik-rng.c17
-rw-r--r--drivers/mmc/core/sdio.c6
-rw-r--r--drivers/mmc/host/mxcmmc.c114
-rw-r--r--drivers/usb/host/ehci-mxc.c4
4 files changed, 124 insertions, 17 deletions
diff --git a/drivers/char/hw_random/nomadik-rng.c b/drivers/char/hw_random/nomadik-rng.c
index a8b4c401014..a348c7e9aa0 100644
--- a/drivers/char/hw_random/nomadik-rng.c
+++ b/drivers/char/hw_random/nomadik-rng.c
@@ -15,6 +15,10 @@
#include <linux/amba/bus.h>
#include <linux/hw_random.h>
#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+
+static struct clk *rng_clk;
static int nmk_rng_read(struct hwrng *rng, void *data, size_t max, bool wait)
{
@@ -40,6 +44,15 @@ static int nmk_rng_probe(struct amba_device *dev, struct amba_id *id)
void __iomem *base;
int ret;
+ rng_clk = clk_get(&dev->dev, NULL);
+ if (IS_ERR(rng_clk)) {
+ dev_err(&dev->dev, "could not get rng clock\n");
+ ret = PTR_ERR(rng_clk);
+ return ret;
+ }
+
+ clk_enable(rng_clk);
+
ret = amba_request_regions(dev, dev->dev.init_name);
if (ret)
return ret;
@@ -57,6 +70,8 @@ out_unmap:
iounmap(base);
out_release:
amba_release_regions(dev);
+ clk_disable(rng_clk);
+ clk_put(rng_clk);
return ret;
}
@@ -66,6 +81,8 @@ static int nmk_rng_remove(struct amba_device *dev)
hwrng_unregister(&nmk_rng);
iounmap(base);
amba_release_regions(dev);
+ clk_disable(rng_clk);
+ clk_put(rng_clk);
return 0;
}
diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c
index 2dd4cfe7ca1..b9dee28ee7d 100644
--- a/drivers/mmc/core/sdio.c
+++ b/drivers/mmc/core/sdio.c
@@ -296,6 +296,12 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr,
card->type = MMC_TYPE_SDIO;
/*
+ * Call the optional HC's init_card function to handle quirks.
+ */
+ if (host->ops->init_card)
+ host->ops->init_card(host, card);
+
+ /*
* For native busses: set card RCA and quit open drain mode.
*/
if (!powered_resume && !mmc_host_is_spi(host)) {
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
index 2df90412abb..ec18e3b6034 100644
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -119,6 +119,7 @@ struct mxcmci_host {
int detect_irq;
int dma;
int do_dma;
+ int use_sdio;
unsigned int power_mode;
struct imxmmc_platform_data *pdata;
@@ -138,6 +139,7 @@ struct mxcmci_host {
int clock;
struct work_struct datawork;
+ spinlock_t lock;
};
static void mxcmci_set_clk_rate(struct mxcmci_host *host, unsigned int clk_ios);
@@ -151,6 +153,8 @@ static void mxcmci_softreset(struct mxcmci_host *host)
{
int i;
+ dev_dbg(mmc_dev(host->mmc), "mxcmci_softreset\n");
+
/* reset sequence */
writew(STR_STP_CLK_RESET, host->base + MMC_REG_STR_STP_CLK);
writew(STR_STP_CLK_RESET | STR_STP_CLK_START_CLK,
@@ -224,6 +228,9 @@ static int mxcmci_setup_data(struct mxcmci_host *host, struct mmc_data *data)
static int mxcmci_start_cmd(struct mxcmci_host *host, struct mmc_command *cmd,
unsigned int cmdat)
{
+ u32 int_cntr;
+ unsigned long flags;
+
WARN_ON(host->cmd != NULL);
host->cmd = cmd;
@@ -247,12 +254,16 @@ static int mxcmci_start_cmd(struct mxcmci_host *host, struct mmc_command *cmd,
return -EINVAL;
}
+ int_cntr = INT_END_CMD_RES_EN;
+
if (mxcmci_use_dma(host))
- writel(INT_READ_OP_EN | INT_WRITE_OP_DONE_EN |
- INT_END_CMD_RES_EN,
- host->base + MMC_REG_INT_CNTR);
- else
- writel(INT_END_CMD_RES_EN, host->base + MMC_REG_INT_CNTR);
+ int_cntr |= INT_READ_OP_EN | INT_WRITE_OP_DONE_EN;
+
+ spin_lock_irqsave(&host->lock, flags);
+ if (host->use_sdio)
+ int_cntr |= INT_SDIO_IRQ_EN;
+ writel(int_cntr, host->base + MMC_REG_INT_CNTR);
+ spin_unlock_irqrestore(&host->lock, flags);
writew(cmd->opcode, host->base + MMC_REG_CMD);
writel(cmd->arg, host->base + MMC_REG_ARG);
@@ -264,7 +275,14 @@ static int mxcmci_start_cmd(struct mxcmci_host *host, struct mmc_command *cmd,
static void mxcmci_finish_request(struct mxcmci_host *host,
struct mmc_request *req)
{
- writel(0, host->base + MMC_REG_INT_CNTR);
+ u32 int_cntr = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&host->lock, flags);
+ if (host->use_sdio)
+ int_cntr |= INT_SDIO_IRQ_EN;
+ writel(int_cntr, host->base + MMC_REG_INT_CNTR);
+ spin_unlock_irqrestore(&host->lock, flags);
host->req = NULL;
host->cmd = NULL;
@@ -290,16 +308,25 @@ static int mxcmci_finish_data(struct mxcmci_host *host, unsigned int stat)
dev_dbg(mmc_dev(host->mmc), "request failed. status: 0x%08x\n",
stat);
if (stat & STATUS_CRC_READ_ERR) {
+ dev_err(mmc_dev(host->mmc), "%s: -EILSEQ\n", __func__);
data->error = -EILSEQ;
} else if (stat & STATUS_CRC_WRITE_ERR) {
u32 err_code = (stat >> 9) & 0x3;
- if (err_code == 2) /* No CRC response */
+ if (err_code == 2) { /* No CRC response */
+ dev_err(mmc_dev(host->mmc),
+ "%s: No CRC -ETIMEDOUT\n", __func__);
data->error = -ETIMEDOUT;
- else
+ } else {
+ dev_err(mmc_dev(host->mmc),
+ "%s: -EILSEQ\n", __func__);
data->error = -EILSEQ;
+ }
} else if (stat & STATUS_TIME_OUT_READ) {
+ dev_err(mmc_dev(host->mmc),
+ "%s: read -ETIMEDOUT\n", __func__);
data->error = -ETIMEDOUT;
} else {
+ dev_err(mmc_dev(host->mmc), "%s: -EIO\n", __func__);
data->error = -EIO;
}
} else {
@@ -433,8 +460,6 @@ static int mxcmci_transfer_data(struct mxcmci_host *host)
struct scatterlist *sg;
int stat, i;
- host->datasize = 0;
-
host->data = data;
host->datasize = 0;
@@ -464,6 +489,9 @@ static void mxcmci_datawork(struct work_struct *work)
struct mxcmci_host *host = container_of(work, struct mxcmci_host,
datawork);
int datastat = mxcmci_transfer_data(host);
+
+ writel(STATUS_READ_OP_DONE | STATUS_WRITE_OP_DONE,
+ host->base + MMC_REG_STATUS);
mxcmci_finish_data(host, datastat);
if (host->req->stop) {
@@ -523,15 +551,35 @@ static void mxcmci_cmd_done(struct mxcmci_host *host, unsigned int stat)
static irqreturn_t mxcmci_irq(int irq, void *devid)
{
struct mxcmci_host *host = devid;
+ unsigned long flags;
+ bool sdio_irq;
u32 stat;
stat = readl(host->base + MMC_REG_STATUS);
- writel(stat, host->base + MMC_REG_STATUS);
+ writel(stat & ~(STATUS_SDIO_INT_ACTIVE | STATUS_DATA_TRANS_DONE |
+ STATUS_WRITE_OP_DONE), host->base + MMC_REG_STATUS);
dev_dbg(mmc_dev(host->mmc), "%s: 0x%08x\n", __func__, stat);
+ spin_lock_irqsave(&host->lock, flags);
+ sdio_irq = (stat & STATUS_SDIO_INT_ACTIVE) && host->use_sdio;
+ spin_unlock_irqrestore(&host->lock, flags);
+
+#ifdef HAS_DMA
+ if (mxcmci_use_dma(host) &&
+ (stat & (STATUS_READ_OP_DONE | STATUS_WRITE_OP_DONE)))
+ writel(STATUS_READ_OP_DONE | STATUS_WRITE_OP_DONE,
+ host->base + MMC_REG_STATUS);
+#endif
+
+ if (sdio_irq) {
+ writel(STATUS_SDIO_INT_ACTIVE, host->base + MMC_REG_STATUS);
+ mmc_signal_sdio_irq(host->mmc);
+ }
+
if (stat & STATUS_END_CMD_RESP)
mxcmci_cmd_done(host, stat);
+
#ifdef HAS_DMA
if (mxcmci_use_dma(host) &&
(stat & (STATUS_DATA_TRANS_DONE | STATUS_WRITE_OP_DONE)))
@@ -668,11 +716,46 @@ static int mxcmci_get_ro(struct mmc_host *mmc)
return -ENOSYS;
}
+static void mxcmci_enable_sdio_irq(struct mmc_host *mmc, int enable)
+{
+ struct mxcmci_host *host = mmc_priv(mmc);
+ unsigned long flags;
+ u32 int_cntr;
+
+ spin_lock_irqsave(&host->lock, flags);
+ host->use_sdio = enable;
+ int_cntr = readl(host->base + MMC_REG_INT_CNTR);
+
+ if (enable)
+ int_cntr |= INT_SDIO_IRQ_EN;
+ else
+ int_cntr &= ~INT_SDIO_IRQ_EN;
+
+ writel(int_cntr, host->base + MMC_REG_INT_CNTR);
+ spin_unlock_irqrestore(&host->lock, flags);
+}
+
+static void mxcmci_init_card(struct mmc_host *host, struct mmc_card *card)
+{
+ /*
+ * MX3 SoCs have a silicon bug which corrupts CRC calculation of
+ * multi-block transfers when connected SDIO peripheral doesn't
+ * drive the BUSY line as required by the specs.
+ * One way to prevent this is to only allow 1-bit transfers.
+ */
+
+ if (cpu_is_mx3() && card->type == MMC_TYPE_SDIO)
+ host->caps &= ~MMC_CAP_4_BIT_DATA;
+ else
+ host->caps |= MMC_CAP_4_BIT_DATA;
+}
static const struct mmc_host_ops mxcmci_ops = {
- .request = mxcmci_request,
- .set_ios = mxcmci_set_ios,
- .get_ro = mxcmci_get_ro,
+ .request = mxcmci_request,
+ .set_ios = mxcmci_set_ios,
+ .get_ro = mxcmci_get_ro,
+ .enable_sdio_irq = mxcmci_enable_sdio_irq,
+ .init_card = mxcmci_init_card,
};
static int mxcmci_probe(struct platform_device *pdev)
@@ -700,7 +783,7 @@ static int mxcmci_probe(struct platform_device *pdev)
}
mmc->ops = &mxcmci_ops;
- mmc->caps = MMC_CAP_4_BIT_DATA;
+ mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ;
/* MMC core transfer sizes tunable parameters */
mmc->max_hw_segs = 64;
@@ -719,6 +802,7 @@ static int mxcmci_probe(struct platform_device *pdev)
host->mmc = mmc;
host->pdata = pdev->dev.platform_data;
+ spin_lock_init(&host->lock);
if (host->pdata && host->pdata->ocr_avail)
mmc->ocr_avail = host->pdata->ocr_avail;
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c
index ead59f42e69..544ccfd7056 100644
--- a/drivers/usb/host/ehci-mxc.c
+++ b/drivers/usb/host/ehci-mxc.c
@@ -199,8 +199,8 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
writel(pdata->portsc, hcd->regs + PORTSC_OFFSET);
mdelay(10);
- /* setup USBCONTROL. */
- ret = mxc_set_usbcontrol(pdev->id, pdata->flags);
+ /* setup specific usb hw */
+ ret = mxc_initialize_usb_hw(pdev->id, pdata->flags);
if (ret < 0)
goto err_init;