diff options
| author | Bryan O'Donoghue <bryan.odonoghue@linaro.org> | 2022-04-15 14:59:54 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2022-05-17 10:07:59 +0300 |
| commit | 3de9dc7f677312c717eebcee5c4535b4c6be7662 (patch) | |
| tree | ae5c24a226b5ad741e8072f9cfbf63e090411484 /drivers/media/i2c | |
| parent | 2aab3abfda2bbb2c758e4b2a1df04ee04d3bab22 (diff) | |
| download | linux-3de9dc7f677312c717eebcee5c4535b4c6be7662.tar.xz | |
media: i2c: imx412: Add bulk regulator support
Depending on the platform we may need to enable and disable three separate
regulators for the imx412.
- DOVDD
Digital I/O power
- AVDD
Analog power
- DVDD
Digital core power
The addition of these regulators shouldn't affect existing users using
fixed-on/firmware-controlled regulators.
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Acked-by: Daniele Alessandrelli <daniele.alessandrelli@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'drivers/media/i2c')
| -rw-r--r-- | drivers/media/i2c/imx412.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/media/i2c/imx412.c b/drivers/media/i2c/imx412.c index 84279a680873..a1394d6c1432 100644 --- a/drivers/media/i2c/imx412.c +++ b/drivers/media/i2c/imx412.c @@ -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> @@ -101,6 +102,12 @@ struct imx412_mode { struct imx412_reg_list reg_list; }; +static const char * const imx412_supply_names[] = { + "dovdd", /* Digital I/O power */ + "avdd", /* Analog power */ + "dvdd", /* Digital core power */ +}; + /** * struct imx412 - imx412 sensor device structure * @dev: Pointer to generic device @@ -109,6 +116,7 @@ struct imx412_mode { * @pad: Media pad. Only one pad supported * @reset_gpio: Sensor reset gpio * @inclk: Sensor input clock + * @supplies: Regulator supplies * @ctrl_handler: V4L2 control handler * @link_freq_ctrl: Pointer to link frequency control * @pclk_ctrl: Pointer to pixel clock control @@ -128,6 +136,7 @@ struct imx412 { struct media_pad pad; struct gpio_desc *reset_gpio; struct clk *inclk; + struct regulator_bulk_data supplies[ARRAY_SIZE(imx412_supply_names)]; struct v4l2_ctrl_handler ctrl_handler; struct v4l2_ctrl *link_freq_ctrl; struct v4l2_ctrl *pclk_ctrl; @@ -946,6 +955,16 @@ static int imx412_parse_hw_config(struct imx412 *imx412) return -EINVAL; } + /* Get optional DT defined regulators */ + for (i = 0; i < ARRAY_SIZE(imx412_supply_names); i++) + imx412->supplies[i].supply = imx412_supply_names[i]; + + ret = devm_regulator_bulk_get(imx412->dev, + ARRAY_SIZE(imx412_supply_names), + imx412->supplies); + if (ret) + return ret; + ep = fwnode_graph_get_next_endpoint(fwnode, NULL); if (!ep) return -ENXIO; @@ -1011,6 +1030,13 @@ static int imx412_power_on(struct device *dev) struct imx412 *imx412 = to_imx412(sd); int ret; + ret = regulator_bulk_enable(ARRAY_SIZE(imx412_supply_names), + imx412->supplies); + if (ret < 0) { + dev_err(dev, "failed to enable regulators\n"); + return ret; + } + gpiod_set_value_cansleep(imx412->reset_gpio, 0); ret = clk_prepare_enable(imx412->inclk); @@ -1025,6 +1051,8 @@ static int imx412_power_on(struct device *dev) error_reset: gpiod_set_value_cansleep(imx412->reset_gpio, 1); + regulator_bulk_disable(ARRAY_SIZE(imx412_supply_names), + imx412->supplies); return ret; } @@ -1044,6 +1072,9 @@ static int imx412_power_off(struct device *dev) gpiod_set_value_cansleep(imx412->reset_gpio, 1); + regulator_bulk_disable(ARRAY_SIZE(imx412_supply_names), + imx412->supplies); + return 0; } |