diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0610-media-i2c-ov5647-Add-support-for-regulator-control.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0610-media-i2c-ov5647-Add-support-for-regulator-control.patch | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0610-media-i2c-ov5647-Add-support-for-regulator-control.patch b/target/linux/bcm27xx/patches-5.15/950-0610-media-i2c-ov5647-Add-support-for-regulator-control.patch new file mode 100644 index 0000000000..ec8a612476 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0610-media-i2c-ov5647-Add-support-for-regulator-control.patch @@ -0,0 +1,111 @@ +From 659037c028f28ac0f13bd54a55c6c81761fb02ce Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Mon, 22 Nov 2021 12:31:35 +0000 +Subject: [PATCH] media: i2c: ov5647: Add support for regulator + control. + +The driver supported using GPIOs to control the shutdown line, +but no regulator control. + +Add regulator hooks. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +--- + drivers/media/i2c/ov5647.c | 37 +++++++++++++++++++++++++++++++++++++ + 1 file changed, 37 insertions(+) + +--- a/drivers/media/i2c/ov5647.c ++++ b/drivers/media/i2c/ov5647.c +@@ -20,6 +20,7 @@ + #include <linux/module.h> + #include <linux/of_graph.h> + #include <linux/pm_runtime.h> ++#include <linux/regulator/consumer.h> + #include <linux/slab.h> + #include <linux/videodev2.h> + #include <media/v4l2-ctrls.h> +@@ -82,6 +83,15 @@ + #define OV5647_EXPOSURE_DEFAULT 1000 + #define OV5647_EXPOSURE_MAX 65535 + ++/* regulator supplies */ ++static const char * const ov5647_supply_names[] = { ++ "avdd", /* Analog power */ ++ "dovdd", /* Digital I/O power */ ++ "dvdd", /* Digital core power */ ++}; ++ ++#define OV5647_NUM_SUPPLIES ARRAY_SIZE(ov5647_supply_names) ++ + struct regval_list { + u16 addr; + u8 data; +@@ -103,6 +113,7 @@ struct ov5647 { + struct mutex lock; + struct clk *xclk; + struct gpio_desc *pwdn; ++ struct regulator_bulk_data supplies[OV5647_NUM_SUPPLIES]; + bool clock_ncont; + struct v4l2_ctrl_handler ctrls; + const struct ov5647_mode *mode; +@@ -787,6 +798,12 @@ static int ov5647_power_on(struct device + + dev_dbg(dev, "OV5647 power on\n"); + ++ ret = regulator_bulk_enable(OV5647_NUM_SUPPLIES, sensor->supplies); ++ if (ret < 0) { ++ dev_err(dev, "Failed to enable regulators\n"); ++ return ret; ++ } ++ + if (sensor->pwdn) { + gpiod_set_value_cansleep(sensor->pwdn, 0); + msleep(PWDN_ACTIVE_DELAY_MS); +@@ -818,6 +835,7 @@ error_clk_disable: + clk_disable_unprepare(sensor->xclk); + error_pwdn: + gpiod_set_value_cansleep(sensor->pwdn, 1); ++ regulator_bulk_disable(OV5647_NUM_SUPPLIES, sensor->supplies); + + return ret; + } +@@ -847,6 +865,7 @@ static int ov5647_power_off(struct devic + + clk_disable_unprepare(sensor->xclk); + gpiod_set_value_cansleep(sensor->pwdn, 1); ++ regulator_bulk_disable(OV5647_NUM_SUPPLIES, sensor->supplies); + + return 0; + } +@@ -1347,6 +1366,18 @@ static const struct v4l2_ctrl_ops ov5647 + .s_ctrl = ov5647_s_ctrl, + }; + ++static int ov5647_configure_regulators(struct device *dev, ++ struct ov5647 *sensor) ++{ ++ unsigned int i; ++ ++ for (i = 0; i < OV5647_NUM_SUPPLIES; i++) ++ sensor->supplies[i].supply = ov5647_supply_names[i]; ++ ++ return devm_regulator_bulk_get(dev, OV5647_NUM_SUPPLIES, ++ sensor->supplies); ++} ++ + static int ov5647_init_controls(struct ov5647 *sensor, struct device *dev) + { + struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd); +@@ -1494,6 +1525,12 @@ static int ov5647_probe(struct i2c_clien + return -EINVAL; + } + ++ ret = ov5647_configure_regulators(dev, sensor); ++ if (ret) { ++ dev_err(dev, "Failed to get power regulators\n"); ++ return ret; ++ } ++ + mutex_init(&sensor->lock); + + sensor->mode = OV5647_DEFAULT_MODE; |