diff options
Diffstat (limited to 'target/linux/brcm2708/patches-3.10/0183-V4L2-Add-manual-white-balance-control.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-3.10/0183-V4L2-Add-manual-white-balance-control.patch | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-3.10/0183-V4L2-Add-manual-white-balance-control.patch b/target/linux/brcm2708/patches-3.10/0183-V4L2-Add-manual-white-balance-control.patch new file mode 100644 index 0000000000..ada84c8828 --- /dev/null +++ b/target/linux/brcm2708/patches-3.10/0183-V4L2-Add-manual-white-balance-control.patch @@ -0,0 +1,130 @@ +From 9f0bd5e194e2aca372c7dd4b0911fabf5b9ae80c Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dsteve@broadcom.com> +Date: Tue, 25 Mar 2014 11:48:01 +0000 +Subject: [PATCH 183/196] V4L2: Add manual white balance control. + +Adds support for V4L2_CID_RED_BALANCE and +V4L2_CID_BLUE_BALANCE. Only has an effect if +V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE has +V4L2_WHITE_BALANCE_MANUAL selected. + +Signed-off-by: Dave Stevenson <dsteve@broadcom.com> +--- + drivers/media/platform/bcm2835/bcm2835-camera.h | 4 ++- + drivers/media/platform/bcm2835/controls.c | 39 +++++++++++++++++++++++- + drivers/media/platform/bcm2835/mmal-parameters.h | 8 ++++- + 3 files changed, 48 insertions(+), 3 deletions(-) + +diff --git a/drivers/media/platform/bcm2835/bcm2835-camera.h b/drivers/media/platform/bcm2835/bcm2835-camera.h +index f389bea..4ddd687 100644 +--- a/drivers/media/platform/bcm2835/bcm2835-camera.h ++++ b/drivers/media/platform/bcm2835/bcm2835-camera.h +@@ -15,7 +15,7 @@ + * core driver device + */ + +-#define V4L2_CTRL_COUNT 25 /* number of v4l controls */ ++#define V4L2_CTRL_COUNT 27 /* number of v4l controls */ + + enum { + MMAL_COMPONENT_CAMERA = 0, +@@ -49,6 +49,8 @@ struct bm2835_mmal_dev { + struct mmal_colourfx colourfx; + int hflip; + int vflip; ++ int red_gain; ++ int blue_gain; + enum mmal_parameter_exposuremode exposure_mode_user; + enum v4l2_exposure_auto_type exposure_mode_v4l2_user; + /* active exposure mode may differ if selected via a scene mode */ +diff --git a/drivers/media/platform/bcm2835/controls.c b/drivers/media/platform/bcm2835/controls.c +index b7a7e88..9a40bd0 100644 +--- a/drivers/media/platform/bcm2835/controls.c ++++ b/drivers/media/platform/bcm2835/controls.c +@@ -491,6 +491,29 @@ static int ctrl_set_awb_mode(struct bm2835_mmal_dev *dev, + &u32_value, sizeof(u32_value)); + } + ++static int ctrl_set_awb_gains(struct bm2835_mmal_dev *dev, ++ struct v4l2_ctrl *ctrl, ++ const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) ++{ ++ struct vchiq_mmal_port *control; ++ struct mmal_parameter_awbgains gains; ++ ++ control = &dev->component[MMAL_COMPONENT_CAMERA]->control; ++ ++ if (ctrl->id == V4L2_CID_RED_BALANCE) ++ dev->red_gain = ctrl->val; ++ else if (ctrl->id == V4L2_CID_BLUE_BALANCE) ++ dev->blue_gain = ctrl->val; ++ ++ gains.r_gain.num = dev->red_gain; ++ gains.b_gain.num = dev->blue_gain; ++ gains.r_gain.den = gains.b_gain.den = 1000; ++ ++ return vchiq_mmal_port_parameter_set(dev->instance, control, ++ mmal_ctrl->mmal_id, ++ &gains, sizeof(gains)); ++} ++ + static int ctrl_set_image_effect(struct bm2835_mmal_dev *dev, + struct v4l2_ctrl *ctrl, + const struct bm2835_mmal_v4l2_ctrl *mmal_ctrl) +@@ -991,12 +1014,26 @@ static const struct bm2835_mmal_v4l2_ctrl v4l2_ctrls[V4L2_CTRL_COUNT] = { + { + V4L2_CID_AUTO_N_PRESET_WHITE_BALANCE, + MMAL_CONTROL_TYPE_STD_MENU, +- ~0x3fe, 9, V4L2_WHITE_BALANCE_AUTO, 0, NULL, ++ ~0x3ff, 9, V4L2_WHITE_BALANCE_AUTO, 0, NULL, + MMAL_PARAMETER_AWB_MODE, + &ctrl_set_awb_mode, + false + }, + { ++ V4L2_CID_RED_BALANCE, MMAL_CONTROL_TYPE_STD, ++ 1, 7999, 1000, 1, NULL, ++ MMAL_PARAMETER_CUSTOM_AWB_GAINS, ++ &ctrl_set_awb_gains, ++ false ++ }, ++ { ++ V4L2_CID_BLUE_BALANCE, MMAL_CONTROL_TYPE_STD, ++ 1, 7999, 1000, 1, NULL, ++ MMAL_PARAMETER_CUSTOM_AWB_GAINS, ++ &ctrl_set_awb_gains, ++ false ++ }, ++ { + V4L2_CID_COLORFX, MMAL_CONTROL_TYPE_STD_MENU, + 0, 15, V4L2_COLORFX_NONE, 0, NULL, + MMAL_PARAMETER_IMAGE_EFFECT, +diff --git a/drivers/media/platform/bcm2835/mmal-parameters.h b/drivers/media/platform/bcm2835/mmal-parameters.h +index ae8fef9..089f949 100644 +--- a/drivers/media/platform/bcm2835/mmal-parameters.h ++++ b/drivers/media/platform/bcm2835/mmal-parameters.h +@@ -161,7 +161,8 @@ enum mmal_parameter_camera_type { + MMAL_PARAMETER_SW_SHARPEN_DISABLE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_FLASH_REQUIRED, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ + MMAL_PARAMETER_SW_SATURATION_DISABLE, /**< @ref MMAL_PARAMETER_BOOLEAN_T */ +- MMAL_PARAMETER_SHUTTER_SPEED /**< Takes a @ref MMAL_PARAMETER_UINT32_T */ ++ MMAL_PARAMETER_SHUTTER_SPEED, /**< Takes a @ref MMAL_PARAMETER_UINT32_T */ ++ MMAL_PARAMETER_CUSTOM_AWB_GAINS, /**< Takes a @ref MMAL_PARAMETER_AWB_GAINS_T */ + }; + + struct mmal_parameter_rational { +@@ -292,6 +293,11 @@ enum MMAL_PARAM_FLICKERAVOID_T { + MMAL_PARAM_FLICKERAVOID_MAX = 0x7FFFFFFF + }; + ++struct mmal_parameter_awbgains { ++ struct mmal_parameter_rational r_gain; /**< Red gain */ ++ struct mmal_parameter_rational b_gain; /**< Blue gain */ ++}; ++ + /** Manner of video rate control */ + enum mmal_parameter_rate_control_mode { + MMAL_VIDEO_RATECONTROL_DEFAULT, +-- +1.9.1 + |