@@ -975,7 +975,7 @@ if MEDIA_CAMERA_SUPPORT
config VIDEO_AD5820
tristate "AD5820 lens voice coil support"
- depends on I2C && VIDEO_V4L2 && MEDIA_CONTROLLER
+ depends on GPIOLIB && I2C && VIDEO_V4L2 && MEDIA_CONTROLLER
help
This is a driver for the AD5820 camera lens voice coil.
It is used for example in Nokia N900 (RX-51).
@@ -19,6 +19,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/regulator/consumer.h>
+#include <linux/gpio/consumer.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
@@ -47,6 +48,8 @@ struct ad5820_device {
u32 focus_ramp_time;
u32 focus_ramp_mode;
+ struct gpio_desc *enable_gpio;
+
struct mutex power_lock;
int power_count;
@@ -114,6 +117,8 @@ static int ad5820_power_off(struct ad5820_device *coil, bool standby)
ret = ad5820_update_hw(coil);
}
+ gpiod_set_value_cansleep(coil->enable_gpio, 0);
+
ret2 = regulator_disable(coil->vana);
if (ret)
return ret;
@@ -128,6 +133,8 @@ static int ad5820_power_on(struct ad5820_device *coil, bool restore)
if (ret < 0)
return ret;
+ gpiod_set_value_cansleep(coil->enable_gpio, 1);
+
if (restore) {
/* Restore the hardware settings. */
coil->standby = false;
@@ -138,6 +145,7 @@ static int ad5820_power_on(struct ad5820_device *coil, bool restore)
return 0;
fail:
+ gpiod_set_value_cansleep(coil->enable_gpio, 0);
coil->standby = true;
regulator_disable(coil->vana);
@@ -304,6 +312,15 @@ static int ad5820_probe(struct i2c_client *client,
return ret;
}
+ coil->enable_gpio = devm_gpiod_get_optional(&client->dev, "enable",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(coil->enable_gpio)) {
+ ret = PTR_ERR(coil->enable_gpio);
+ if (ret != -EPROBE_DEFER)
+ dev_err(&client->dev, "could not get enable gpio\n");
+ return ret;
+ }
+
mutex_init(&coil->power_lock);
v4l2_i2c_subdev_init(&coil->subdev, client, &ad5820_ops);