Re: [PATCH v3] iio: improve usage of gpiod API

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On Wed, Feb 18, 2015 at 2:47 PM, Uwe Kleine-König
<u.kleine-koenig@xxxxxxxxxxxxxx> wrote:
> Since 39b2bbe3d715 (gpio: add flags argument to gpiod_get*() functions)
> which appeared in v3.17-rc1, the gpiod_get* functions take an additional
> parameter that allows to specify direction and initial value for
> outputs.
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>

Reviewed-by: Daniel Baluta <daniel.baluta@xxxxxxxxx>

I can take care of gpiod_to_irq error code checking.

> ---
>
> Notes:
>     Changes since v2, sent with Message-Id:
>     1424255921-6429-1-git-send-email-u.kleine-koenig@xxxxxxxxxxxxxx
>
>      - also fix drivers/iio/accel/mma9553.c
>
>  drivers/iio/accel/bmc150-accel.c | 6 +-----
>  drivers/iio/accel/kxcjk-1013.c   | 6 +-----
>  drivers/iio/accel/mma9551.c      | 7 ++-----
>  drivers/iio/accel/mma9553.c      | 6 +-----
>  drivers/iio/gyro/bmg160.c        | 6 +-----
>  drivers/iio/imu/kmx61.c          | 6 +-----
>  drivers/iio/proximity/sx9500.c   | 6 +-----
>  7 files changed, 8 insertions(+), 35 deletions(-)
>
> diff --git a/drivers/iio/accel/bmc150-accel.c b/drivers/iio/accel/bmc150-accel.c
> index 066d0c04072c..9f208755eb66 100644
> --- a/drivers/iio/accel/bmc150-accel.c
> +++ b/drivers/iio/accel/bmc150-accel.c
> @@ -1176,16 +1176,12 @@ static int bmc150_accel_gpio_probe(struct i2c_client *client,
>         dev = &client->dev;
>
>         /* data ready gpio interrupt pin */
> -       gpio = devm_gpiod_get_index(dev, BMC150_ACCEL_GPIO_NAME, 0);
> +       gpio = devm_gpiod_get_index(dev, BMC150_ACCEL_GPIO_NAME, 0, GPIOD_IN);
>         if (IS_ERR(gpio)) {
>                 dev_err(dev, "Failed: gpio get index\n");
>                 return PTR_ERR(gpio);
>         }
>
> -       ret = gpiod_direction_input(gpio);
> -       if (ret)
> -               return ret;
> -
>         ret = gpiod_to_irq(gpio);
>
>         dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
> diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c
> index 567de269cc00..a98b5d212fb3 100644
> --- a/drivers/iio/accel/kxcjk-1013.c
> +++ b/drivers/iio/accel/kxcjk-1013.c
> @@ -1169,16 +1169,12 @@ static int kxcjk1013_gpio_probe(struct i2c_client *client,
>         dev = &client->dev;
>
>         /* data ready gpio interrupt pin */
> -       gpio = devm_gpiod_get_index(dev, "kxcjk1013_int", 0);
> +       gpio = devm_gpiod_get_index(dev, "kxcjk1013_int", 0, GPIOD_IN);
>         if (IS_ERR(gpio)) {
>                 dev_err(dev, "acpi gpio get index failed\n");
>                 return PTR_ERR(gpio);
>         }
>
> -       ret = gpiod_direction_input(gpio);
> -       if (ret)
> -               return ret;
> -
>         ret = gpiod_to_irq(gpio);
>
>         dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
> diff --git a/drivers/iio/accel/mma9551.c b/drivers/iio/accel/mma9551.c
> index 46c38351c6a3..1277f407cd12 100644
> --- a/drivers/iio/accel/mma9551.c
> +++ b/drivers/iio/accel/mma9551.c
> @@ -418,16 +418,13 @@ static int mma9551_gpio_probe(struct iio_dev *indio_dev)
>         struct device *dev = &data->client->dev;
>
>         for (i = 0; i < MMA9551_GPIO_COUNT; i++) {
> -               gpio = devm_gpiod_get_index(dev, MMA9551_GPIO_NAME, i);
> +               gpio = devm_gpiod_get_index(dev, MMA9551_GPIO_NAME, i,
> +                                           GPIOD_IN);
>                 if (IS_ERR(gpio)) {
>                         dev_err(dev, "acpi gpio get index failed\n");
>                         return PTR_ERR(gpio);
>                 }
>
> -               ret = gpiod_direction_input(gpio);
> -               if (ret)
> -                       return ret;
> -
>                 data->irqs[i] = gpiod_to_irq(gpio);
>                 ret = devm_request_threaded_irq(dev, data->irqs[i],
>                                 NULL, mma9551_event_handler,
> diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c
> index d23ebf192f63..2df1af7d43fc 100644
> --- a/drivers/iio/accel/mma9553.c
> +++ b/drivers/iio/accel/mma9553.c
> @@ -1109,16 +1109,12 @@ static int mma9553_gpio_probe(struct i2c_client *client)
>         dev = &client->dev;
>
>         /* data ready gpio interrupt pin */
> -       gpio = devm_gpiod_get_index(dev, MMA9553_GPIO_NAME, 0);
> +       gpio = devm_gpiod_get_index(dev, MMA9553_GPIO_NAME, 0, GPIOD_IN);
>         if (IS_ERR(gpio)) {
>                 dev_err(dev, "acpi gpio get index failed\n");
>                 return PTR_ERR(gpio);
>         }
>
> -       ret = gpiod_direction_input(gpio);
> -       if (ret)
> -               return ret;
> -
>         ret = gpiod_to_irq(gpio);
>
>         dev_dbg(dev, "gpio resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
> diff --git a/drivers/iio/gyro/bmg160.c b/drivers/iio/gyro/bmg160.c
> index 60451b328242..56d68e1d0987 100644
> --- a/drivers/iio/gyro/bmg160.c
> +++ b/drivers/iio/gyro/bmg160.c
> @@ -1001,16 +1001,12 @@ static int bmg160_gpio_probe(struct i2c_client *client,
>         dev = &client->dev;
>
>         /* data ready gpio interrupt pin */
> -       gpio = devm_gpiod_get_index(dev, BMG160_GPIO_NAME, 0);
> +       gpio = devm_gpiod_get_index(dev, BMG160_GPIO_NAME, 0, GPIOD_IN);
>         if (IS_ERR(gpio)) {
>                 dev_err(dev, "acpi gpio get index failed\n");
>                 return PTR_ERR(gpio);
>         }
>
> -       ret = gpiod_direction_input(gpio);
> -       if (ret)
> -               return ret;
> -
>         ret = gpiod_to_irq(gpio);
>
>         dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
> diff --git a/drivers/iio/imu/kmx61.c b/drivers/iio/imu/kmx61.c
> index 5cc3692acf37..adba9dcae788 100644
> --- a/drivers/iio/imu/kmx61.c
> +++ b/drivers/iio/imu/kmx61.c
> @@ -1267,16 +1267,12 @@ static int kmx61_gpio_probe(struct i2c_client *client, struct kmx61_data *data)
>         dev = &client->dev;
>
>         /* data ready gpio interrupt pin */
> -       gpio = devm_gpiod_get_index(dev, KMX61_GPIO_NAME, 0);
> +       gpio = devm_gpiod_get_index(dev, KMX61_GPIO_NAME, 0, GPIOD_IN);
>         if (IS_ERR(gpio)) {
>                 dev_err(dev, "acpi gpio get index failed\n");
>                 return PTR_ERR(gpio);
>         }
>
> -       ret = gpiod_direction_input(gpio);
> -       if (ret)
> -               return ret;
> -
>         ret = gpiod_to_irq(gpio);
>
>         dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
> diff --git a/drivers/iio/proximity/sx9500.c b/drivers/iio/proximity/sx9500.c
> index 74dff4e4a11a..0b4d79490b05 100644
> --- a/drivers/iio/proximity/sx9500.c
> +++ b/drivers/iio/proximity/sx9500.c
> @@ -618,16 +618,12 @@ static int sx9500_gpio_probe(struct i2c_client *client,
>         dev = &client->dev;
>
>         /* data ready gpio interrupt pin */
> -       gpio = devm_gpiod_get_index(dev, SX9500_GPIO_NAME, 0);
> +       gpio = devm_gpiod_get_index(dev, SX9500_GPIO_NAME, 0, GPIOD_IN);
>         if (IS_ERR(gpio)) {
>                 dev_err(dev, "acpi gpio get index failed\n");
>                 return PTR_ERR(gpio);
>         }
>
> -       ret = gpiod_direction_input(gpio);
> -       if (ret)
> -               return ret;
> -
>         ret = gpiod_to_irq(gpio);
>
>         dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
> --
> 2.1.4
>
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