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authorLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>2013-08-08 12:38:32 +0200
committerChris Ball <cjb@laptop.org>2013-08-24 23:45:22 -0400
commitbf287a90ceedf86e3313ba0dcff606ac5399b39a (patch)
treea3337495e68fde2270c406574774a283c0b4e002 /drivers/mmc/host/of_mmc_spi.c
parent214fc309d1387e822d606a33a10e31cacfe83520 (diff)
downloadlinux-bf287a90ceedf86e3313ba0dcff606ac5399b39a.tar.bz2
mmc: mmc_spi: Support CD/RO GPIOs
Add support for passing CD/RO GPIO numbers directly to the mmc_spi driver instead of relying solely on board code callbacks to retrieve the CD/RO signals values. The driver will enable debouncing on the card detect GPIO if the cd_debounce field is set to a non-zero value. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/host/of_mmc_spi.c')
-rw-r--r--drivers/mmc/host/of_mmc_spi.c46
1 files changed, 12 insertions, 34 deletions
diff --git a/drivers/mmc/host/of_mmc_spi.c b/drivers/mmc/host/of_mmc_spi.c
index d720b5e05b9c..6e218fb1a669 100644
--- a/drivers/mmc/host/of_mmc_spi.c
+++ b/drivers/mmc/host/of_mmc_spi.c
@@ -50,25 +50,6 @@ static struct of_mmc_spi *to_of_mmc_spi(struct device *dev)
return container_of(dev->platform_data, struct of_mmc_spi, pdata);
}
-static int of_mmc_spi_read_gpio(struct device *dev, int gpio_num)
-{
- struct of_mmc_spi *oms = to_of_mmc_spi(dev);
- bool active_low = oms->alow_gpios[gpio_num];
- bool value = gpio_get_value(oms->gpios[gpio_num]);
-
- return active_low ^ value;
-}
-
-static int of_mmc_spi_get_cd(struct device *dev)
-{
- return of_mmc_spi_read_gpio(dev, CD_GPIO);
-}
-
-static int of_mmc_spi_get_ro(struct device *dev)
-{
- return of_mmc_spi_read_gpio(dev, WP_GPIO);
-}
-
static int of_mmc_spi_init(struct device *dev,
irqreturn_t (*irqhandler)(int, void *), void *mmc)
{
@@ -130,20 +111,22 @@ struct mmc_spi_platform_data *mmc_spi_get_pdata(struct spi_device *spi)
if (!gpio_is_valid(oms->gpios[i]))
continue;
- ret = gpio_request(oms->gpios[i], dev_name(dev));
- if (ret < 0) {
- oms->gpios[i] = -EINVAL;
- continue;
- }
-
if (gpio_flags & OF_GPIO_ACTIVE_LOW)
oms->alow_gpios[i] = true;
}
- if (gpio_is_valid(oms->gpios[CD_GPIO]))
- oms->pdata.get_cd = of_mmc_spi_get_cd;
- if (gpio_is_valid(oms->gpios[WP_GPIO]))
- oms->pdata.get_ro = of_mmc_spi_get_ro;
+ if (gpio_is_valid(oms->gpios[CD_GPIO])) {
+ oms->pdata.cd_gpio = oms->gpios[CD_GPIO];
+ oms->pdata.flags |= MMC_SPI_USE_CD_GPIO;
+ if (!oms->alow_gpios[CD_GPIO])
+ oms->pdata.caps2 |= MMC_CAP2_CD_ACTIVE_HIGH;
+ }
+ if (gpio_is_valid(oms->gpios[WP_GPIO])) {
+ oms->pdata.ro_gpio = oms->gpios[WP_GPIO];
+ oms->pdata.flags |= MMC_SPI_USE_RO_GPIO;
+ if (!oms->alow_gpios[WP_GPIO])
+ oms->pdata.caps2 |= MMC_CAP2_RO_ACTIVE_HIGH;
+ }
oms->detect_irq = irq_of_parse_and_map(np, 0);
if (oms->detect_irq != 0) {
@@ -166,15 +149,10 @@ void mmc_spi_put_pdata(struct spi_device *spi)
struct device *dev = &spi->dev;
struct device_node *np = dev->of_node;
struct of_mmc_spi *oms = to_of_mmc_spi(dev);
- int i;
if (!dev->platform_data || !np)
return;
- for (i = 0; i < ARRAY_SIZE(oms->gpios); i++) {
- if (gpio_is_valid(oms->gpios[i]))
- gpio_free(oms->gpios[i]);
- }
kfree(oms);
dev->platform_data = NULL;
}