From mboxrd@z Thu Jan  1 00:00:00 1970
From: sourav.poddar@ti.com (Sourav Poddar)
Date: Mon, 18 Mar 2013 13:31:10 +0530
Subject: [PATCH] i2c: sirf: get the i2c pin group by pinctrl api
In-Reply-To: <1363591361-5992-1-git-send-email-Barry.Song@csr.com>
References: <1363591361-5992-1-git-send-email-Barry.Song@csr.com>
Message-ID: <5146C9C6.2030507@ti.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

Hi,
On Monday 18 March 2013 12:52 PM, Barry Song wrote:
> From: Barry Song<Baohua.Song@csr.com>
>
> hardcode set i2c pin group to i2c function before, here we
> move to use standard pinctrl API to get pins of the group.
>
> Signed-off-by: Barry Song<Baohua.Song@csr.com>
> Cc: Linus Walleij<linus.walleij@linaro.org>
> ---
>   drivers/i2c/busses/i2c-sirf.c |    9 +++++++++
>   1 files changed, 9 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/i2c/busses/i2c-sirf.c b/drivers/i2c/busses/i2c-sirf.c
> index 5a7ad24..dd4004e 100644
> --- a/drivers/i2c/busses/i2c-sirf.c
> +++ b/drivers/i2c/busses/i2c-sirf.c
> @@ -16,6 +16,7 @@
>   #include<linux/clk.h>
>   #include<linux/err.h>
>   #include<linux/io.h>
> +#include<linux/pinctrl/consumer.h>
>
>   #define SIRFSOC_I2C_CLK_CTRL		0x00
>   #define SIRFSOC_I2C_STATUS		0x0C
> @@ -265,6 +266,7 @@ static int i2c_sirfsoc_probe(struct platform_device *pdev)
>   	struct i2c_adapter *adap;
>   	struct resource *mem_res;
>   	struct clk *clk;
> +	struct pinctrl *pinctrl;
>   	int bitrate;
>   	int ctrl_speed;
>   	int irq;
> @@ -272,6 +274,12 @@ static int i2c_sirfsoc_probe(struct platform_device *pdev)
>   	int err;
>   	u32 regval;
>
> +	pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
> +	if (IS_ERR(pinctrl)) {
> +		err = PTR_ERR(pinctrl);
> +		goto failed_pin;
> +	}
> +
I think,  you should also add an "EPROBE_DEFER" check here ?
>   	clk = clk_get(&pdev->dev, NULL);
>   	if (IS_ERR(clk)) {
>   		err = PTR_ERR(clk);
> @@ -385,6 +393,7 @@ err_clk_en:
>   err_clk_prep:
>   	clk_put(clk);
>   err_get_clk:
> +failed_pin:
>   	return err;
>   }
>