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authorTomasz Figa <t.figa@samsung.com>2012-11-16 15:28:17 +0100
committerChris Ball <cjb@laptop.org>2012-12-06 13:55:01 -0500
commitb96efccb8fc9939605599e5b2c026644973cc92d (patch)
treecac505437daeb67208ede0177573747dd2618990 /drivers/mmc
parentb1b8fea94f4c71b5503b7e29974635121f44b302 (diff)
mmc: host: sdhci-s3c: Add support for pinctrl
This patch adds support for pin configuration using pinctrl subsystem to the sdhci-s3c driver. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Thomas Abraham <thomas.abraham@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/host/sdhci-s3c.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 93c5d62fcaff..99697696e7eb 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -24,6 +24,7 @@
#include <linux/of_gpio.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
+#include <linux/pinctrl/consumer.h>
#include <linux/mmc/host.h>
@@ -57,6 +58,7 @@ struct sdhci_s3c {
int ext_cd_irq;
int ext_cd_gpio;
int *gpios;
+ struct pinctrl *pctrl;
struct clk *clk_io;
struct clk *clk_bus[MAX_BUS_CLK];
@@ -484,8 +486,9 @@ static int __devinit sdhci_s3c_parse_dt(struct device *dev,
return -EINVAL;
}
- dev_info(dev, "assuming no card detect line available\n");
- pdata->cd_type = S3C_SDHCI_CD_NONE;
+ /* assuming internal card detect that will be configured by pinctrl */
+ pdata->cd_type = S3C_SDHCI_CD_INTERNAL;
+ goto setup_bus;
found_cd:
if (pdata->cd_type == S3C_SDHCI_CD_GPIO) {
@@ -503,6 +506,9 @@ static int __devinit sdhci_s3c_parse_dt(struct device *dev,
}
setup_bus:
+ if (!IS_ERR(ourhost->pctrl))
+ return 0;
+
/* get the gpios for command, clock and data lines */
for (cnt = 0; cnt < NUM_GPIOS(pdata->max_width); cnt++) {
gpio = of_get_gpio(node, cnt);
@@ -581,6 +587,8 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
goto err_pdata_io_clk;
}
+ sc->pctrl = devm_pinctrl_get_select_default(&pdev->dev);
+
if (pdev->dev.of_node) {
ret = sdhci_s3c_parse_dt(&pdev->dev, host, pdata);
if (ret)