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authorShawn Guo <shawn.guo@linaro.org>2012-12-11 22:32:20 +0800
committerChris Ball <cjb@laptop.org>2013-02-11 12:51:24 -0500
commitfbe5fdd12c4cdae61a8c3d371e564371177da86e (patch)
treebdcda448cd93de95d267c99cf79a064cd54e3252 /drivers/mmc/host/sdhci-esdhc-imx.c
parent164cda5236acf833f22a3edafdf8b95a7de7b402 (diff)
downloadvexpress-lsk-fbe5fdd12c4cdae61a8c3d371e564371177da86e.tar.gz
mmc: sdhci-esdhc-imx: use slot-gpio helpers for CD and WP
Use slot-gpio helpers to save some code in the driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/sdhci-esdhc-imx.c')
-rw-r--r--drivers/mmc/host/sdhci-esdhc-imx.c56
1 files changed, 16 insertions, 40 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index e07df812ff1..dd7fcc13764 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -21,6 +21,7 @@
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/sdio.h>
+#include <linux/mmc/slot-gpio.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
@@ -147,17 +148,16 @@ static u32 esdhc_readl_le(struct sdhci_host *host, int reg)
struct pltfm_imx_data *imx_data = pltfm_host->priv;
struct esdhc_platform_data *boarddata = &imx_data->boarddata;
- /* fake CARD_PRESENT flag */
u32 val = readl(host->ioaddr + reg);
- if (unlikely((reg == SDHCI_PRESENT_STATE)
- && gpio_is_valid(boarddata->cd_gpio))) {
- if (gpio_get_value(boarddata->cd_gpio))
- /* no card, if a valid gpio says so... */
+ if (unlikely(reg == SDHCI_PRESENT_STATE)) {
+ /*
+ * After SDHCI core gets improved to never query
+ * SDHCI_CARD_PRESENT state in GPIO case, we can
+ * remove this check.
+ */
+ if (boarddata->cd_type == ESDHC_CD_GPIO)
val &= ~SDHCI_CARD_PRESENT;
- else
- /* ... in all other cases assume card is present */
- val |= SDHCI_CARD_PRESENT;
}
if (unlikely(reg == SDHCI_CAPABILITIES)) {
@@ -362,8 +362,7 @@ static unsigned int esdhc_pltfm_get_ro(struct sdhci_host *host)
switch (boarddata->wp_type) {
case ESDHC_WP_GPIO:
- if (gpio_is_valid(boarddata->wp_gpio))
- return gpio_get_value(boarddata->wp_gpio);
+ return mmc_gpio_get_ro(host->mmc);
case ESDHC_WP_CONTROLLER:
return !(readl(host->ioaddr + SDHCI_PRESENT_STATE) &
SDHCI_WRITE_PROTECT);
@@ -394,14 +393,6 @@ static struct sdhci_pltfm_data sdhci_esdhc_imx_pdata = {
.ops = &sdhci_esdhc_ops,
};
-static irqreturn_t cd_irq(int irq, void *data)
-{
- struct sdhci_host *sdhost = (struct sdhci_host *)data;
-
- tasklet_schedule(&sdhost->card_tasklet);
- return IRQ_HANDLED;
-};
-
#ifdef CONFIG_OF
static int
sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
@@ -527,37 +518,22 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
/* write_protect */
if (boarddata->wp_type == ESDHC_WP_GPIO) {
- err = devm_gpio_request_one(&pdev->dev, boarddata->wp_gpio,
- GPIOF_IN, "ESDHC_WP");
+ err = mmc_gpio_request_ro(host->mmc, boarddata->wp_gpio);
if (err) {
- dev_warn(mmc_dev(host->mmc),
- "no write-protect pin available!\n");
- boarddata->wp_gpio = -EINVAL;
+ dev_err(mmc_dev(host->mmc),
+ "failed to request write-protect gpio!\n");
+ goto disable_clk;
}
- } else {
- boarddata->wp_gpio = -EINVAL;
+ host->mmc->caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
}
/* card_detect */
- if (boarddata->cd_type != ESDHC_CD_GPIO)
- boarddata->cd_gpio = -EINVAL;
-
switch (boarddata->cd_type) {
case ESDHC_CD_GPIO:
- err = devm_gpio_request_one(&pdev->dev, boarddata->cd_gpio,
- GPIOF_IN, "ESDHC_CD");
+ err = mmc_gpio_request_cd(host->mmc, boarddata->cd_gpio);
if (err) {
dev_err(mmc_dev(host->mmc),
- "no card-detect pin available!\n");
- goto disable_clk;
- }
-
- err = devm_request_irq(&pdev->dev,
- gpio_to_irq(boarddata->cd_gpio), cd_irq,
- IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
- mmc_hostname(host->mmc), host);
- if (err) {
- dev_err(mmc_dev(host->mmc), "request irq error\n");
+ "failed to request card-detect gpio!\n");
goto disable_clk;
}
/* fall through */