@@ -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
@@ -128,6 +137,7 @@ 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;
@@ -767,6 +777,18 @@ static int ov9282_detect(struct ov9282 *ov9282)
return 0;
}
+static int ov9282_configure_regulators(struct ov9282 *ov9282)
+{
+ unsigned int i;
+
+ for (i = 0; i < OV9282_NUM_SUPPLIES; i++)
+ ov9282->supplies[i].supply = ov9282_supply_names[i];
+
+ return devm_regulator_bulk_get(ov9282->dev,
+ OV9282_NUM_SUPPLIES,
+ ov9282->supplies);
+}
+
/**
* ov9282_parse_hw_config() - Parse HW configuration and check if supported
* @ov9282: pointer to ov9282 device
@@ -803,6 +825,12 @@ static int ov9282_parse_hw_config(struct ov9282 *ov9282)
return PTR_ERR(ov9282->inclk);
}
+ ret = ov9282_configure_regulators(ov9282);
+ if (ret) {
+ dev_err(ov9282->dev, "Failed to get power regulators\n");
+ return ret;
+ }
+
rate = clk_get_rate(ov9282->inclk);
if (rate != OV9282_INCLK_RATE) {
dev_err(ov9282->dev, "inclk frequency mismatch");
@@ -874,6 +902,12 @@ static int ov9282_power_on(struct device *dev)
struct ov9282 *ov9282 = to_ov9282(sd);
int ret;
+ ret = regulator_bulk_enable(OV9282_NUM_SUPPLIES, ov9282->supplies);
+ if (ret < 0) {
+ dev_err(dev, "Failed to enable regulators\n");
+ return ret;
+ }
+
usleep_range(400, 600);
gpiod_set_value_cansleep(ov9282->reset_gpio, 1);
@@ -891,6 +925,8 @@ static int ov9282_power_on(struct device *dev)
error_reset:
gpiod_set_value_cansleep(ov9282->reset_gpio, 0);
+ regulator_bulk_disable(OV9282_NUM_SUPPLIES, ov9282->supplies);
+
return ret;
}
@@ -909,6 +945,8 @@ static int ov9282_power_off(struct device *dev)
clk_disable_unprepare(ov9282->inclk);
+ regulator_bulk_disable(OV9282_NUM_SUPPLIES, ov9282->supplies);
+
return 0;
}
The sensor takes 3 supply rails - AVDD, DVDD, and DOVDD. Add hooks into the regulator framework for each of these regulators. Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> --- drivers/media/i2c/ov9282.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+)