Add a fixed-voltage GPIO-enabled regulator to switch the camera on and off
instead of using a .power() platform callback.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@xxxxxx>
---
arch/arm/mach-imx/mach-pcm037.c | 54 ++++++++++++++++++++++++++++-----------
1 files changed, 39 insertions(+), 15 deletions(-)
diff --git a/arch/arm/mach-imx/mach-pcm037.c b/arch/arm/mach-imx/mach-pcm037.c
index ef55ac1..f138481 100644
--- a/arch/arm/mach-imx/mach-pcm037.c
+++ b/arch/arm/mach-imx/mach-pcm037.c
@@ -288,12 +288,39 @@ static struct at24_platform_data board_eeprom = {
.flags = AT24_FLAG_ADDR16,
};
-static int pcm037_camera_power(struct device *dev, int on)
-{
- /* disable or enable the camera in X7 or X8 PCM970 connector */
- gpio_set_value(IOMUX_TO_GPIO(MX31_PIN_CSI_D5), !on);
- return 0;
-}
+/* Fixed 3.3V regulator to be used by cameras */
+static struct regulator_consumer_supply vcc_cam_consumers[] = {
+ REGULATOR_SUPPLY("vcc", "2-005d"),
+};
+
+static struct regulator_init_data vcc_cam_init_data = {
+ .constraints = {
+ .valid_ops_mask = REGULATOR_CHANGE_STATUS,
+ },
+ .num_consumer_supplies = ARRAY_SIZE(vcc_cam_consumers),
+ .consumer_supplies = vcc_cam_consumers,
+};
+
+static struct fixed_voltage_config vcc_cam_info = {
+ .supply_name = "Camera Vcc",
+ .microvolts = 2800000,
+ .gpio = IOMUX_TO_GPIO(MX31_PIN_CSI_D5),
+ .init_data = &vcc_cam_init_data,
+};
+
+static struct platform_device vcc_cam = {
+ .name = "reg-fixed-voltage",
+ .id = 1,
+ .dev = {
+ .platform_data = &vcc_cam_info,
+ },
+};
+
+static struct regulator_bulk_data cam_supply[] = {
+ {
+ .supply = "vcc",
+ },
+};
static struct i2c_board_info pcm037_i2c_camera[] = {
{
@@ -314,8 +341,11 @@ static struct soc_camera_desc iclink_mt9v022 = {
static struct soc_camera_desc iclink_mt9t031 = {
.subdev_desc = {
- .sd_pdata.host_priv = &iclink_mt9t031,
- .power = pcm037_camera_power,
+ .sd_pdata = {
+ .num_regulators = ARRAY_SIZE(cam_supply),
+ .regulators = cam_supply,
+ .host_priv = &iclink_mt9t031,
+ },
},
.host_desc = {
.bus_id = 0, /* Must match with the camera ID */
@@ -445,6 +475,7 @@ err:
static struct platform_device *devices[] __initdata = {
&pcm037_flash,
&pcm037_sram_device,
+ &vcc_cam,
&pcm037_mt9t031,
&pcm037_mt9v022,
};
@@ -656,13 +687,6 @@ static void __init pcm037_init(void)
imx31_add_mx3_sdc_fb(&mx3fb_pdata);
/* CSI */
- /* Camera power: default - off */
- ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_CSI_D5), "mt9t031-power");
- if (!ret)
- gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_CSI_D5), 1);
- else
- iclink_mt9t031.subdev_desc.power = NULL;
-
pcm037_init_camera();
pcm970_sja1000_resources[1].start =
--
1.7.2.5
--
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