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mmc: sdhci-esdhc-imx: use slot-gpio helpers for CD and WP

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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>
This commit is contained in:
Shawn Guo 2012-12-11 22:32:20 +08:00 committed by Chris Ball
parent 164cda5236
commit fbe5fdd12c
1 changed files with 16 additions and 40 deletions
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56
drivers/mmc/host/sdhci-esdhc-imx.c
View file

@ -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 */