[PATCH v2 4/7] mmc: sdhci-acpi: covert to use GPIO descriptor API

Mika Westerberg
2013-11-22T12:16:43Z

The new descriptor based GPIO interface is now the recommended and safer
way of using GPIOs from device drivers. Convert the ACPI SDHCI driver to
use that interface.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---
drivers/mmc/host/sdhci-acpi.c | 26 ++++++++++++--------------
1 file changed, 12 insertions(+), 14 deletions(-)

diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index ef19874fcd1f..5c86550f83ad 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -31,10 +31,9 @@
#include <linux/bitops.h>
#include <linux/types.h>
#include <linux/err.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/interrupt.h>
#include <linux/acpi.h>
-#include <linux/acpi_gpio.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/delay.h>
@@ -199,22 +198,23 @@ static irqreturn_t sdhci_acpi_sd_cd(int irq, void *dev_id)
return IRQ_HANDLED;
}

-static int sdhci_acpi_add_own_cd(struct device *dev, int gpio,
- struct mmc_host *mmc)
+static int sdhci_acpi_add_own_cd(struct device *dev, struct mmc_host *mmc)
{
+ struct gpio_desc *desc;
unsigned long flags;
int err, irq;

- if (gpio < 0) {
- err = gpio;
+ desc = devm_gpiod_get_index(dev, "sd_cd", 0);
+ if (IS_ERR(desc)) {
+ err = PTR_ERR(desc);
goto out;
}

- err = devm_gpio_request_one(dev, gpio, GPIOF_DIR_IN, "sd_cd");
+ err = gpiod_direction_input(desc);
if (err)
- goto out;
+ goto out_free;

- irq = gpio_to_irq(gpio);
+ irq = gpiod_to_irq(desc);
if (irq < 0) {
err = irq;
goto out_free;
@@ -228,7 +228,7 @@ static int sdhci_acpi_add_own_cd(struct device *dev, int gpio,
return 0;

out_free:
- devm_gpio_free(dev, gpio);
+ devm_gpiod_put(dev, desc);
out:
dev_warn(dev, "failed to setup card detect wake up\n");
return err;
@@ -254,7 +254,7 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
struct resource *iomem;
resource_size_t len;
const char *hid;
- int err, gpio;
+ int err;

if (acpi_bus_get_device(handle, &device))
return -ENODEV;
@@ -279,8 +279,6 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
if (IS_ERR(host))
return PTR_ERR(host);

- gpio = acpi_get_gpio_by_index(dev, 0, NULL);
-
c = sdhci_priv(host);
c->host = host;
c->slot = sdhci_acpi_get_slot(handle, hid);
@@ -338,7 +336,7 @@ static int sdhci_acpi_probe(struct platform_device *pdev)
goto err_free;

if (sdhci_acpi_flag(c, SDHCI_ACPI_SD_CD)) {
- if (sdhci_acpi_add_own_cd(dev, gpio, host->mmc))
+ if (sdhci_acpi_add_own_cd(dev, host->mmc))
c->use_runtime_pm = false;
}

--
1.8.4.3