linux-kernel - [PATCH 5/5] mmc: sdhci-s3c: setup pins using pinctrl interface

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Date:	Sun, 11 Mar 2012 18:16:05 +0530
From:	Thomas Abraham <thomas.abraham@...aro.org>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	linus.walleij@...aro.org, kgene.kim@...sung.com, patches@...aro.org
Subject: [PATCH 5/5] mmc: sdhci-s3c: setup pins using pinctrl interface

The platform specific callback to setup the sdhci pin mux and pin config
is removed and the pinctrl subsystem interface is used to setup the
mux and config.

Signed-off-by: Thomas Abraham <thomas.abraham@...aro.org>
---
 drivers/mmc/host/sdhci-s3c.c |   15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index ea0767e..76c1c36 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -22,6 +22,7 @@
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_gpio.h>
+#include <linux/pinctrl/consumer.h>
 
 #include <linux/mmc/host.h>
 
@@ -50,6 +51,7 @@ struct sdhci_s3c {
 	struct platform_device	*pdev;
 	struct resource		*ioarea;
 	struct s3c_sdhci_platdata *pdata;
+	struct pinctrl 		*pinctrl;
 	unsigned int		cur_clk;
 	int			ext_cd_irq;
 	int			ext_cd_gpio;
@@ -529,6 +531,9 @@ static inline struct sdhci_s3c_drv_data *sdhci_s3c_get_driver_data(
 			platform_get_device_id(pdev)->driver_data;
 }
 
+#include <plat/map-s5p.h>
+#include <plat/map-base.h>
+
 static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 {
 	struct s3c_sdhci_platdata *pdata;
@@ -538,6 +543,7 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 	struct sdhci_s3c *sc;
 	struct resource *res;
 	int ret, irq, ptr, clks;
+	char *pstate;
 
 	if (!pdev->dev.platform_data && !pdev->dev.of_node) {
 		dev_err(dev, "no device data specified\n");
@@ -643,8 +649,13 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 	}
 
 	/* Ensure we have minimal gpio selected CMD/CLK/Detect */
-	if (pdata->cfg_gpio)
-		pdata->cfg_gpio(pdev, pdata->max_width);
+	pstate = pdata->max_width ? "sdhci-pcfg8" : "sdhci-pcfg4";
+	sc->pinctrl = pinctrl_get_select(&pdev->dev, pstate);
+	if (IS_ERR(sc->pinctrl)) {
+		dev_err(dev, "failed to setup pin configuration\n");
+		ret = -ENXIO;
+		goto err_req_regs;
+	}
 
 	host->hw_name = "samsung-hsmmc";
 	host->ops = &sdhci_s3c_ops;
-- 
1.6.6.rc2

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