diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0814-media-i2c-imx258-Add-regulator-control.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0814-media-i2c-imx258-Add-regulator-control.patch | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0814-media-i2c-imx258-Add-regulator-control.patch b/target/linux/bcm27xx/patches-5.15/950-0814-media-i2c-imx258-Add-regulator-control.patch new file mode 100644 index 0000000000..069f9bba0a --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0814-media-i2c-imx258-Add-regulator-control.patch @@ -0,0 +1,109 @@ +From 518075a2587a30a5fb67f2d76e576caf230a4105 Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Tue, 15 Jun 2021 18:45:40 +0100 +Subject: [PATCH] media: i2c: imx258: Add regulator control + +The device tree bindings define the relevant regulators for the +sensor, so update the driver to request the regulators and control +them at the appropriate times. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +--- + drivers/media/i2c/imx258.c | 42 +++++++++++++++++++++++++++++++++++++- + 1 file changed, 41 insertions(+), 1 deletion(-) + +--- a/drivers/media/i2c/imx258.c ++++ b/drivers/media/i2c/imx258.c +@@ -7,6 +7,7 @@ + #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-device.h> + #include <media/v4l2-fwnode.h> +@@ -524,6 +525,16 @@ static const char * const imx258_test_pa + "Pseudorandom Sequence (PN9)", + }; + ++/* regulator supplies */ ++static const char * const imx258_supply_name[] = { ++ /* Supplies can be enabled in any order */ ++ "vana", /* Analog (2.8V) supply */ ++ "vdig", /* Digital Core (1.05V) supply */ ++ "vif", /* IF (1.8V) supply */ ++}; ++ ++#define IMX258_NUM_SUPPLIES ARRAY_SIZE(imx258_supply_name) ++ + /* Configurations for supported link frequencies */ + #define IMX258_LINK_FREQ_634MHZ 633600000ULL + #define IMX258_LINK_FREQ_320MHZ 320000000ULL +@@ -633,6 +644,7 @@ struct imx258 { + bool streaming; + + struct clk *clk; ++ struct regulator_bulk_data supplies[IMX258_NUM_SUPPLIES]; + }; + + static inline struct imx258 *to_imx258(struct v4l2_subdev *_sd) +@@ -1030,9 +1042,19 @@ static int imx258_power_on(struct device + struct imx258 *imx258 = to_imx258(sd); + int ret; + ++ ret = regulator_bulk_enable(IMX258_NUM_SUPPLIES, ++ imx258->supplies); ++ if (ret) { ++ dev_err(dev, "%s: failed to enable regulators\n", ++ __func__); ++ return ret; ++ } ++ + ret = clk_prepare_enable(imx258->clk); +- if (ret) ++ if (ret) { + dev_err(dev, "failed to enable clock\n"); ++ regulator_bulk_disable(IMX258_NUM_SUPPLIES, imx258->supplies); ++ } + + return ret; + } +@@ -1043,6 +1065,7 @@ static int imx258_power_off(struct devic + struct imx258 *imx258 = to_imx258(sd); + + clk_disable_unprepare(imx258->clk); ++ regulator_bulk_disable(IMX258_NUM_SUPPLIES, imx258->supplies); + + return 0; + } +@@ -1285,6 +1308,19 @@ static void imx258_free_controls(struct + mutex_destroy(&imx258->mutex); + } + ++static int imx258_get_regulators(struct imx258 *imx258, ++ struct i2c_client *client) ++{ ++ unsigned int i; ++ ++ for (i = 0; i < IMX258_NUM_SUPPLIES; i++) ++ imx258->supplies[i].supply = imx258_supply_name[i]; ++ ++ return devm_regulator_bulk_get(&client->dev, ++ IMX258_NUM_SUPPLIES, ++ imx258->supplies); ++} ++ + static int imx258_probe(struct i2c_client *client) + { + struct imx258 *imx258; +@@ -1295,6 +1331,10 @@ static int imx258_probe(struct i2c_clien + if (!imx258) + return -ENOMEM; + ++ ret = imx258_get_regulators(imx258, client); ++ if (ret) ++ return ret; ++ + imx258->clk = devm_clk_get_optional(&client->dev, NULL); + if (IS_ERR(imx258->clk)) + return dev_err_probe(&client->dev, PTR_ERR(imx258->clk), |