@@ -11,6 +11,7 @@
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fwnode.h>
@@ -55,6 +56,14 @@
#define OV9282_REG_MIN 0x00
#define OV9282_REG_MAX 0xfffff
+static const char * const ov9282_supply_names[] = {
+ "avdd", /* Analog power */
+ "dovdd", /* Digital I/O power */
+ "dvdd", /* Digital core power */
+};
+
+#define OV9282_NUM_SUPPLIES ARRAY_SIZE(ov9282_supply_names)
+
/**
* struct ov9282_reg - ov9282 sensor register
* @address: Register address
@@ -126,6 +135,7 @@ struct ov9282 {
struct media_pad pad;
struct gpio_desc *reset_gpio;
struct clk *inclk;
+ struct regulator_bulk_data supplies[OV9282_NUM_SUPPLIES];
struct v4l2_ctrl_handler ctrl_handler;
struct v4l2_ctrl *link_freq_ctrl;
struct v4l2_ctrl *pclk_ctrl;
@@ -882,10 +892,19 @@ static int ov9282_power_on(struct device *dev)
goto error_reset;
}
+ ret = regulator_bulk_enable(ARRAY_SIZE(ov9282->supplies),
+ ov9282->supplies);
+ if (ret) {
+ dev_err(dev, "Failed to enable regulators\n");
+ goto disable_clk;
+ }
+
usleep_range(400, 600);
return 0;
+disable_clk:
+ clk_disable_unprepare(ov9282->inclk);
error_reset:
gpiod_set_value_cansleep(ov9282->reset_gpio, 0);
@@ -903,6 +922,8 @@ static int ov9282_power_off(struct device *dev)
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct ov9282 *ov9282 = to_ov9282(sd);
+ regulator_bulk_disable(ARRAY_SIZE(ov9282->supplies), ov9282->supplies);
+
gpiod_set_value_cansleep(ov9282->reset_gpio, 0);
clk_disable_unprepare(ov9282->inclk);
@@ -995,6 +1016,18 @@ static int ov9282_init_controls(struct ov9282 *ov9282)
return 0;
}
+static int ov9282_get_regulators(struct ov9282 *ov9282)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(ov9282->supplies); i++)
+ ov9282->supplies[i].supply = ov9282_supply_names[i];
+
+ return devm_regulator_bulk_get(ov9282->dev,
+ ARRAY_SIZE(ov9282->supplies),
+ ov9282->supplies);
+}
+
/**
* ov9282_probe() - I2C client device binding
* @client: pointer to i2c client device
@@ -1021,6 +1054,12 @@ static int ov9282_probe(struct i2c_client *client)
return ret;
}
+ ret = ov9282_get_regulators(ov9282);
+ if (ret) {
+ dev_err(&client->dev, "Failed to get power regulators\n");
+ return ret;
+ }
+
mutex_init(&ov9282->mutex);
ret = ov9282_power_on(ov9282->dev);
Need in case the sensors is supplied by a switchable regulator. Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com> --- drivers/media/i2c/ov9282.c | 39 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+)