| Message ID | 20220913164104.203957-2-dmitry.torokhov@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | [1/2] ARM: dts: exynos: correct s5k6a3 reset polarity on Midas family | expand |
On Tue, Sep 13, 2022 at 6:41 PM Dmitry Torokhov <dmitry.torokhov@gmail.com> wrote: > This patch switches the driver away from legacy gpio/of_gpio API to > gpiod API, and removes one of the last uses of of_get_gpio_flags(). > > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Yours, Linus Walleij
Hi, On 13.09.2022 18:41, Dmitry Torokhov wrote: > This patch switches the driver away from legacy gpio/of_gpio API to > gpiod API, and removes one of the last uses of of_get_gpio_flags(). > > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Thanks! > --- > drivers/media/i2c/s5k6a3.c | 30 +++++++++++------------------- > 1 file changed, 11 insertions(+), 19 deletions(-) > > diff --git a/drivers/media/i2c/s5k6a3.c b/drivers/media/i2c/s5k6a3.c > index a4efd6d10b43..ef6673b10580 100644 > --- a/drivers/media/i2c/s5k6a3.c > +++ b/drivers/media/i2c/s5k6a3.c > @@ -9,12 +9,12 @@ > #include <linux/clk.h> > #include <linux/delay.h> > #include <linux/device.h> > +#include <linux/err.h> > #include <linux/errno.h> > -#include <linux/gpio.h> > +#include <linux/gpio/consumer.h> > #include <linux/i2c.h> > #include <linux/kernel.h> > #include <linux/module.h> > -#include <linux/of_gpio.h> > #include <linux/pm_runtime.h> > #include <linux/regulator/consumer.h> > #include <linux/slab.h> > @@ -59,7 +59,7 @@ struct s5k6a3 { > struct v4l2_subdev subdev; > struct media_pad pad; > struct regulator_bulk_data supplies[S5K6A3_NUM_SUPPLIES]; > - int gpio_reset; > + struct gpio_desc *gpio_reset; > struct mutex lock; > struct v4l2_mbus_framefmt format; > struct clk *clock; > @@ -216,11 +216,11 @@ static int __s5k6a3_power_on(struct s5k6a3 *sensor) > goto error_clk; > } > > - gpio_set_value(sensor->gpio_reset, 1); > + gpiod_set_value_cansleep(sensor->gpio_reset, 0); > usleep_range(600, 800); > - gpio_set_value(sensor->gpio_reset, 0); > + gpiod_set_value_cansleep(sensor->gpio_reset, 1); > usleep_range(600, 800); > - gpio_set_value(sensor->gpio_reset, 1); > + gpiod_set_value_cansleep(sensor->gpio_reset, 0); > > /* Delay needed for the sensor initialization */ > msleep(20); > @@ -240,7 +240,7 @@ static int __s5k6a3_power_off(struct s5k6a3 *sensor) > { > int i; > > - gpio_set_value(sensor->gpio_reset, 0); > + gpiod_set_value_cansleep(sensor->gpio_reset, 1); > > for (i = S5K6A3_NUM_SUPPLIES - 1; i >= 0; i--) > regulator_disable(sensor->supplies[i].consumer); > @@ -285,32 +285,24 @@ static int s5k6a3_probe(struct i2c_client *client) > struct device *dev = &client->dev; > struct s5k6a3 *sensor; > struct v4l2_subdev *sd; > - int gpio, i, ret; > + int i, ret; > > sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); > if (!sensor) > return -ENOMEM; > > mutex_init(&sensor->lock); > - sensor->gpio_reset = -EINVAL; > - sensor->clock = ERR_PTR(-EINVAL); > sensor->dev = dev; > > sensor->clock = devm_clk_get(sensor->dev, S5K6A3_CLK_NAME); > if (IS_ERR(sensor->clock)) > return PTR_ERR(sensor->clock); > > - gpio = of_get_gpio_flags(dev->of_node, 0, NULL); > - if (!gpio_is_valid(gpio)) > - return gpio; > - > - ret = devm_gpio_request_one(dev, gpio, GPIOF_OUT_INIT_LOW, > - S5K6A3_DRV_NAME); > - if (ret < 0) > + sensor->gpio_reset = devm_gpiod_get(dev, NULL, GPIOD_OUT_HIGH); > + ret = PTR_ERR_OR_ZERO(sensor->gpio_reset); > + if (ret) > return ret; > > - sensor->gpio_reset = gpio; > - > if (of_property_read_u32(dev->of_node, "clock-frequency", > &sensor->clock_frequency)) { > sensor->clock_frequency = S5K6A3_DEFAULT_CLK_FREQ; Best regards
diff --git a/drivers/media/i2c/s5k6a3.c b/drivers/media/i2c/s5k6a3.c index a4efd6d10b43..ef6673b10580 100644 --- a/drivers/media/i2c/s5k6a3.c +++ b/drivers/media/i2c/s5k6a3.c @@ -9,12 +9,12 @@ #include <linux/clk.h> #include <linux/delay.h> #include <linux/device.h> +#include <linux/err.h> #include <linux/errno.h> -#include <linux/gpio.h> +#include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/kernel.h> #include <linux/module.h> -#include <linux/of_gpio.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> @@ -59,7 +59,7 @@ struct s5k6a3 { struct v4l2_subdev subdev; struct media_pad pad; struct regulator_bulk_data supplies[S5K6A3_NUM_SUPPLIES]; - int gpio_reset; + struct gpio_desc *gpio_reset; struct mutex lock; struct v4l2_mbus_framefmt format; struct clk *clock; @@ -216,11 +216,11 @@ static int __s5k6a3_power_on(struct s5k6a3 *sensor) goto error_clk; } - gpio_set_value(sensor->gpio_reset, 1); + gpiod_set_value_cansleep(sensor->gpio_reset, 0); usleep_range(600, 800); - gpio_set_value(sensor->gpio_reset, 0); + gpiod_set_value_cansleep(sensor->gpio_reset, 1); usleep_range(600, 800); - gpio_set_value(sensor->gpio_reset, 1); + gpiod_set_value_cansleep(sensor->gpio_reset, 0); /* Delay needed for the sensor initialization */ msleep(20); @@ -240,7 +240,7 @@ static int __s5k6a3_power_off(struct s5k6a3 *sensor) { int i; - gpio_set_value(sensor->gpio_reset, 0); + gpiod_set_value_cansleep(sensor->gpio_reset, 1); for (i = S5K6A3_NUM_SUPPLIES - 1; i >= 0; i--) regulator_disable(sensor->supplies[i].consumer); @@ -285,32 +285,24 @@ static int s5k6a3_probe(struct i2c_client *client) struct device *dev = &client->dev; struct s5k6a3 *sensor; struct v4l2_subdev *sd; - int gpio, i, ret; + int i, ret; sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL); if (!sensor) return -ENOMEM; mutex_init(&sensor->lock); - sensor->gpio_reset = -EINVAL; - sensor->clock = ERR_PTR(-EINVAL); sensor->dev = dev; sensor->clock = devm_clk_get(sensor->dev, S5K6A3_CLK_NAME); if (IS_ERR(sensor->clock)) return PTR_ERR(sensor->clock); - gpio = of_get_gpio_flags(dev->of_node, 0, NULL); - if (!gpio_is_valid(gpio)) - return gpio; - - ret = devm_gpio_request_one(dev, gpio, GPIOF_OUT_INIT_LOW, - S5K6A3_DRV_NAME); - if (ret < 0) + sensor->gpio_reset = devm_gpiod_get(dev, NULL, GPIOD_OUT_HIGH); + ret = PTR_ERR_OR_ZERO(sensor->gpio_reset); + if (ret) return ret; - sensor->gpio_reset = gpio; - if (of_property_read_u32(dev->of_node, "clock-frequency", &sensor->clock_frequency)) { sensor->clock_frequency = S5K6A3_DEFAULT_CLK_FREQ;
This patch switches the driver away from legacy gpio/of_gpio API to gpiod API, and removes one of the last uses of of_get_gpio_flags(). Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> --- drivers/media/i2c/s5k6a3.c | 30 +++++++++++------------------- 1 file changed, 11 insertions(+), 19 deletions(-)