summaryrefslogtreecommitdiffstats
path: root/drivers/mmc/host
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/mmc/host')
-rw-r--r--drivers/mmc/host/mmci.c79
-rw-r--r--drivers/mmc/host/mmci.h2
-rw-r--r--drivers/mmc/host/mxcmmc.c2
3 files changed, 73 insertions, 10 deletions
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index e1aa8471ab1..8741d0f5146 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -21,6 +21,7 @@
#include <linux/amba/bus.h>
#include <linux/clk.h>
#include <linux/scatterlist.h>
+#include <linux/gpio.h>
#include <asm/cacheflush.h>
#include <asm/div64.h>
@@ -430,7 +431,7 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
clk = 255;
host->cclk = host->mclk / (2 * (clk + 1));
}
- if (host->hw_designer == 0x80)
+ if (host->hw_designer == AMBA_VENDOR_ST)
clk |= MCI_FCEN; /* Bug fix in ST IP block */
clk |= MCI_CLK_ENABLE;
}
@@ -443,7 +444,7 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
break;
case MMC_POWER_UP:
/* The ST version does not have this, fall through to POWER_ON */
- if (host->hw_designer != 0x80) {
+ if (host->hw_designer != AMBA_VENDOR_ST) {
pwr |= MCI_PWR_UP;
break;
}
@@ -453,7 +454,7 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
}
if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN) {
- if (host->hw_designer != 0x80)
+ if (host->hw_designer != AMBA_VENDOR_ST)
pwr |= MCI_ROD;
else {
/*
@@ -472,17 +473,41 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
}
}
+static int mmci_get_ro(struct mmc_host *mmc)
+{
+ struct mmci_host *host = mmc_priv(mmc);
+
+ if (host->gpio_wp == -ENOSYS)
+ return -ENOSYS;
+
+ return gpio_get_value(host->gpio_wp);
+}
+
+static int mmci_get_cd(struct mmc_host *mmc)
+{
+ struct mmci_host *host = mmc_priv(mmc);
+ unsigned int status;
+
+ if (host->gpio_cd == -ENOSYS)
+ status = host->plat->status(mmc_dev(host->mmc));
+ else
+ status = gpio_get_value(host->gpio_cd);
+
+ return !status;
+}
+
static const struct mmc_host_ops mmci_ops = {
.request = mmci_request,
.set_ios = mmci_set_ios,
+ .get_ro = mmci_get_ro,
+ .get_cd = mmci_get_cd,
};
static void mmci_check_status(unsigned long data)
{
struct mmci_host *host = (struct mmci_host *)data;
- unsigned int status;
+ unsigned int status = mmci_get_cd(host->mmc);
- status = host->plat->status(mmc_dev(host->mmc));
if (status ^ host->oldstat)
mmc_detect_change(host->mmc, 0);
@@ -515,12 +540,15 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
host = mmc_priv(mmc);
host->mmc = mmc;
- /* Bits 12 thru 19 is the designer */
- host->hw_designer = (dev->periphid >> 12) & 0xff;
- /* Bits 20 thru 23 is the revison */
- host->hw_revision = (dev->periphid >> 20) & 0xf;
+
+ host->gpio_wp = -ENOSYS;
+ host->gpio_cd = -ENOSYS;
+
+ host->hw_designer = amba_manf(dev);
+ host->hw_revision = amba_rev(dev);
DBG(host, "designer ID = 0x%02x\n", host->hw_designer);
DBG(host, "revision = 0x%01x\n", host->hw_revision);
+
host->clk = clk_get(&dev->dev, NULL);
if (IS_ERR(host->clk)) {
ret = PTR_ERR(host->clk);
@@ -591,6 +619,27 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
writel(0, host->base + MMCIMASK1);
writel(0xfff, host->base + MMCICLEAR);
+#ifdef CONFIG_GPIOLIB
+ if (gpio_is_valid(plat->gpio_cd)) {
+ ret = gpio_request(plat->gpio_cd, DRIVER_NAME " (cd)");
+ if (ret == 0)
+ ret = gpio_direction_input(plat->gpio_cd);
+ if (ret == 0)
+ host->gpio_cd = plat->gpio_cd;
+ else if (ret != -ENOSYS)
+ goto err_gpio_cd;
+ }
+ if (gpio_is_valid(plat->gpio_wp)) {
+ ret = gpio_request(plat->gpio_wp, DRIVER_NAME " (wp)");
+ if (ret == 0)
+ ret = gpio_direction_input(plat->gpio_wp);
+ if (ret == 0)
+ host->gpio_wp = plat->gpio_wp;
+ else if (ret != -ENOSYS)
+ goto err_gpio_wp;
+ }
+#endif
+
ret = request_irq(dev->irq[0], mmci_irq, IRQF_SHARED, DRIVER_NAME " (cmd)", host);
if (ret)
goto unmap;
@@ -602,6 +651,7 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
writel(MCI_IRQENABLE, host->base + MMCIMASK0);
amba_set_drvdata(dev, mmc);
+ host->oldstat = mmci_get_cd(host->mmc);
mmc_add_host(mmc);
@@ -620,6 +670,12 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
irq0_free:
free_irq(dev->irq[0], host);
unmap:
+ if (host->gpio_wp != -ENOSYS)
+ gpio_free(host->gpio_wp);
+ err_gpio_wp:
+ if (host->gpio_cd != -ENOSYS)
+ gpio_free(host->gpio_cd);
+ err_gpio_cd:
iounmap(host->base);
clk_disable:
clk_disable(host->clk);
@@ -655,6 +711,11 @@ static int __devexit mmci_remove(struct amba_device *dev)
free_irq(dev->irq[0], host);
free_irq(dev->irq[1], host);
+ if (host->gpio_wp != -ENOSYS)
+ gpio_free(host->gpio_wp);
+ if (host->gpio_cd != -ENOSYS)
+ gpio_free(host->gpio_cd);
+
iounmap(host->base);
clk_disable(host->clk);
clk_put(host->clk);
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index 0441bac1c0e..839f264c972 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -151,6 +151,8 @@ struct mmci_host {
struct mmc_data *data;
struct mmc_host *mmc;
struct clk *clk;
+ int gpio_cd;
+ int gpio_wp;
unsigned int data_xfered;
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c
index bc14bb1b057..88671529c45 100644
--- a/drivers/mmc/host/mxcmmc.c
+++ b/drivers/mmc/host/mxcmmc.c
@@ -512,7 +512,7 @@ static void mxcmci_cmd_done(struct mxcmci_host *host, unsigned int stat)
}
/* For the DMA case the DMA engine handles the data transfer
- * automatically. For non DMA we have to to it ourselves.
+ * automatically. For non DMA we have to do it ourselves.
* Don't do it in interrupt context though.
*/
if (!mxcmci_use_dma(host) && host->data)
generated by cgit (git 2.34.1) at 2024-11-07 16:33:03 +0000