From fbe14a124c1616af65ddfc1add2fd323aaec67ae Mon Sep 17 00:00:00 2001 From: Sebastian Reichel Date: Tue, 21 Oct 2014 12:07:01 -0300 Subject: [PATCH] [media] si4713: switch reset gpio to devm_gpiod API This updates the driver to use the managed gpiod interface instead of the unmanged old GPIO API. This is a preperation for the introduction of device tree support. Signed-off-by: Sebastian Reichel Signed-off-by: Hans Verkuil [hans.verkuil@cisco.com: fixed trivial compiler warning] Signed-off-by: Mauro Carvalho Chehab --- drivers/media/radio/si4713/si4713.c | 38 +++++++++++++---------------- drivers/media/radio/si4713/si4713.h | 3 ++- 2 files changed, 19 insertions(+), 22 deletions(-) diff --git a/drivers/media/radio/si4713/si4713.c b/drivers/media/radio/si4713/si4713.c index 5c2a2fcb8965..952550e7be8f 100644 --- a/drivers/media/radio/si4713/si4713.c +++ b/drivers/media/radio/si4713/si4713.c @@ -383,9 +383,9 @@ static int si4713_powerup(struct si4713_device *sdev) } } - if (gpio_is_valid(sdev->gpio_reset)) { + if (!IS_ERR(sdev->gpio_reset)) { udelay(50); - gpio_set_value(sdev->gpio_reset, 1); + gpiod_set_value(sdev->gpio_reset, 1); } if (client->irq) @@ -407,8 +407,8 @@ static int si4713_powerup(struct si4713_device *sdev) SI4713_STC_INT | SI4713_CTS); return err; } - if (gpio_is_valid(sdev->gpio_reset)) - gpio_set_value(sdev->gpio_reset, 0); + if (!IS_ERR(sdev->gpio_reset)) + gpiod_set_value(sdev->gpio_reset, 0); if (sdev->vdd) { @@ -447,8 +447,8 @@ static int si4713_powerdown(struct si4713_device *sdev) v4l2_dbg(1, debug, &sdev->sd, "Power down response: 0x%02x\n", resp[0]); v4l2_dbg(1, debug, &sdev->sd, "Device in reset mode\n"); - if (gpio_is_valid(sdev->gpio_reset)) - gpio_set_value(sdev->gpio_reset, 0); + if (!IS_ERR(sdev->gpio_reset)) + gpiod_set_value(sdev->gpio_reset, 0); if (sdev->vdd) { err = regulator_disable(sdev->vdd); @@ -1446,7 +1446,6 @@ static int si4713_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct si4713_device *sdev; - struct si4713_platform_data *pdata = client->dev.platform_data; struct v4l2_ctrl_handler *hdl; int rval; @@ -1457,16 +1456,17 @@ static int si4713_probe(struct i2c_client *client, goto exit; } - sdev->gpio_reset = -1; - if (pdata && gpio_is_valid(pdata->gpio_reset)) { - rval = gpio_request(pdata->gpio_reset, "si4713 reset"); - if (rval) { - dev_err(&client->dev, - "Failed to request gpio: %d\n", rval); - goto free_sdev; - } - sdev->gpio_reset = pdata->gpio_reset; - gpio_direction_output(sdev->gpio_reset, 0); + sdev->gpio_reset = devm_gpiod_get(&client->dev, "reset"); + if (!IS_ERR(sdev->gpio_reset)) { + gpiod_direction_output(sdev->gpio_reset, 0); + } else if (PTR_ERR(sdev->gpio_reset) == -ENOENT) { + dev_dbg(&client->dev, "No reset GPIO assigned\n"); + } else if (PTR_ERR(sdev->gpio_reset) == -ENOSYS) { + dev_dbg(&client->dev, "No reset GPIO support\n"); + } else { + rval = PTR_ERR(sdev->gpio_reset); + dev_err(&client->dev, "Failed to request gpio: %d\n", rval); + goto free_sdev; } sdev->vdd = devm_regulator_get_optional(&client->dev, "vdd"); @@ -1614,8 +1614,6 @@ free_irq: free_irq(client->irq, sdev); free_ctrls: v4l2_ctrl_handler_free(hdl); - if (gpio_is_valid(sdev->gpio_reset)) - gpio_free(sdev->gpio_reset); free_sdev: kfree(sdev); exit: @@ -1636,8 +1634,6 @@ static int si4713_remove(struct i2c_client *client) v4l2_device_unregister_subdev(sd); v4l2_ctrl_handler_free(sd->ctrl_handler); - if (gpio_is_valid(sdev->gpio_reset)) - gpio_free(sdev->gpio_reset); kfree(sdev); return 0; diff --git a/drivers/media/radio/si4713/si4713.h b/drivers/media/radio/si4713/si4713.h index ed28ed27c95f..7c2479f42329 100644 --- a/drivers/media/radio/si4713/si4713.h +++ b/drivers/media/radio/si4713/si4713.h @@ -16,6 +16,7 @@ #define SI4713_I2C_H #include +#include #include #include #include @@ -236,7 +237,7 @@ struct si4713_device { struct completion work; struct regulator *vdd; struct regulator *vio; - int gpio_reset; + struct gpio_desc *gpio_reset; u32 power_state; u32 rds_enabled; u32 frequency; -- 2.20.1