From 1068fecacf4304ff5c41139c4a84a19bdb08ef90 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Myl=C3=A8ne=20Josserand?= <mylene.josserand@bootlin.com>
Date: Mon, 16 Apr 2018 08:36:51 -0400
Subject: [PATCH] media: ov5640: Add light frequency control
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Add the light frequency control to be able to set the frequency
to manual (50Hz or 60Hz) or auto.
[Sakari Ailus: Rename "ctl" as "ctrl" as agreed.]
[mchehab+samsung@kernel.org: fixed two coding style warnings]
Signed-off-by: Mylène Josserand <mylene.josserand@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
---
drivers/media/i2c/ov5640.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c
index 7acd3b44d1944..60b7da7bf8ef5 100644
--- a/drivers/media/i2c/ov5640.c
+++ b/drivers/media/i2c/ov5640.c
@@ -187,6 +187,7 @@ struct ov5640_ctrls {
struct v4l2_ctrl *gain;
};
struct v4l2_ctrl *brightness;
+ struct v4l2_ctrl *light_freq;
struct v4l2_ctrl *saturation;
struct v4l2_ctrl *contrast;
struct v4l2_ctrl *hue;
@@ -2155,6 +2156,21 @@ static int ov5640_set_ctrl_test_pattern(struct ov5640_dev *sensor, int value)
0xa4, value ? 0xa4 : 0);
}
+static int ov5640_set_ctrl_light_freq(struct ov5640_dev *sensor, int value)
+{
+ int ret;
+
+ ret = ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL01, BIT(7),
+ (value == V4L2_CID_POWER_LINE_FREQUENCY_AUTO) ?
+ 0 : BIT(7));
+ if (ret)
+ return ret;
+
+ return ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL00, BIT(2),
+ (value == V4L2_CID_POWER_LINE_FREQUENCY_50HZ) ?
+ BIT(2) : 0);
+}
+
static int ov5640_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
@@ -2223,6 +2239,9 @@ static int ov5640_s_ctrl(struct v4l2_ctrl *ctrl)
case V4L2_CID_TEST_PATTERN:
ret = ov5640_set_ctrl_test_pattern(sensor, ctrl->val);
break;
+ case V4L2_CID_POWER_LINE_FREQUENCY:
+ ret = ov5640_set_ctrl_light_freq(sensor, ctrl->val);
+ break;
default:
ret = -EINVAL;
break;
@@ -2285,6 +2304,12 @@ static int ov5640_init_controls(struct ov5640_dev *sensor)
ARRAY_SIZE(test_pattern_menu) - 1,
0, 0, test_pattern_menu);
+ ctrls->light_freq =
+ v4l2_ctrl_new_std_menu(hdl, ops,
+ V4L2_CID_POWER_LINE_FREQUENCY,
+ V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
+ V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
+
if (hdl->error) {
ret = hdl->error;
goto free_ctrls;
--
2.30.2