From 2693ac69880a33d4d9df6f128415b65e745f00ba Mon Sep 17 00:00:00 2001 From: Tomasz Figa Date: Tue, 13 Nov 2012 11:33:40 +0100 Subject: i2c: s3c2410: Add support for pinctrl This patch adds support for pin configuration using pinctrl subsystem to the i2c-s3c2410 driver. Signed-off-by: Tomasz Figa Signed-off-by: Kyungmin Park Signed-off-by: Wolfram Sang --- drivers/i2c/busses/i2c-s3c2410.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'drivers/i2c') diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index f82d11f9b8f..40e2d40bbdb 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -38,6 +38,7 @@ #include #include #include +#include #include @@ -82,6 +83,7 @@ struct s3c24xx_i2c { struct s3c2410_platform_i2c *pdata; int gpios[2]; + struct pinctrl *pctrl; #ifdef CONFIG_CPU_FREQ struct notifier_block freq_transition; #endif @@ -860,9 +862,8 @@ static int s3c24xx_i2c_init(struct s3c24xx_i2c *i2c) if (pdata->cfg_gpio) pdata->cfg_gpio(to_platform_device(i2c->dev)); - else - if (s3c24xx_i2c_parse_dt_gpio(i2c)) - return -EINVAL; + else if (IS_ERR(i2c->pctrl) && s3c24xx_i2c_parse_dt_gpio(i2c)) + return -EINVAL; /* write slave address */ @@ -1003,6 +1004,8 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev) i2c->adap.algo_data = i2c; i2c->adap.dev.parent = &pdev->dev; + i2c->pctrl = devm_pinctrl_get_select_default(i2c->dev); + /* initialise the i2c controller */ ret = s3c24xx_i2c_init(i2c); @@ -1092,7 +1095,8 @@ static int s3c24xx_i2c_remove(struct platform_device *pdev) clk_disable_unprepare(i2c->clk); clk_put(i2c->clk); - s3c24xx_i2c_dt_gpio_free(i2c); + if (pdev->dev.of_node && IS_ERR(i2c->pctrl)) + s3c24xx_i2c_dt_gpio_free(i2c); return 0; } -- cgit v1.2.2