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Subject[RFC PATCH v2 4/4] mmc: sdhci-esdhc-imx: using pinmux subsystem
Date
From: Dong Aisheng <dong.aisheng@linaro.org>

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Chris Ball <cjb@laptop.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Wolfram Sang <w.sang@pengutronix.de>
---
drivers/mmc/host/sdhci-esdhc-imx.c | 20 ++++++++++++++++++++
1 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 4b976f0..4504136 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -24,6 +24,7 @@
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
+#include <linux/pinctrl/pinmux.h>
#include <mach/esdhc.h>
#include "sdhci-pltfm.h"
#include "sdhci-esdhc.h"
@@ -68,6 +69,7 @@ struct pltfm_imx_data {
int flags;
u32 scratchpad;
enum imx_esdhc_type devtype;
+ struct pinmux *pmx;
struct esdhc_platform_data boarddata;
};

@@ -439,6 +441,7 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
struct clk *clk;
int err;
struct pltfm_imx_data *imx_data;
+ struct pinmux *pmx;

host = sdhci_pltfm_init(pdev, &sdhci_esdhc_imx_pdata);
if (IS_ERR(host))
@@ -466,6 +469,16 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
clk_enable(clk);
pltfm_host->clk = clk;

+ pmx = pinmux_get(&pdev->dev, NULL);
+ if (IS_ERR(pmx)) {
+ err = PTR_ERR(pmx);
+ goto err_pmx_get;
+ }
+ err = pinmux_enable(pmx);
+ if (err)
+ goto err_pmx_enable;
+ imx_data->pmx = pmx;
+
if (!is_imx25_esdhc(imx_data))
host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;

@@ -558,6 +571,10 @@ no_card_detect_irq:
gpio_free(boarddata->wp_gpio);
no_card_detect_pin:
no_board_data:
+ pinmux_disable(imx_data->pmx);
+err_pmx_enable:
+ pinmux_put(imx_data->pmx);
+err_pmx_get:
clk_disable(pltfm_host->clk);
clk_put(pltfm_host->clk);
err_clk_get:
@@ -585,6 +602,9 @@ static int __devexit sdhci_esdhc_imx_remove(struct platform_device *pdev)
gpio_free(boarddata->cd_gpio);
}

+ pinmux_disable(imx_data->pmx);
+ pinmux_put(imx_data->pmx);
+
clk_disable(pltfm_host->clk);
clk_put(pltfm_host->clk);
kfree(imx_data);
--
1.7.0.4



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