Hi Lars,
On 01/13/2015 01:01 PM, Lars-Peter Clausen wrote:
> The adv7180 (and similar) has support for a so called free run mode in which
> it will output a predefined test signal. This patch adds support for
> configuring the various aspects of the so called free run mode.
>
> The patch adds three new v4l controls:
> * Free Running Mode: Allows to either disable or enable free running
> mode or set it to automatic. In automatic mode the adv7180 will go to
> free run mode if no external signal source could be detected
> * Free Running Pattern: Allows to select which pattern will be displayed
> in free run mode
> * Free Running Color: Allows to select the color of the pattern
>
> Signed-off-by: Lars-Peter Clausen <l...@metafoo.de>
> ---
> drivers/media/i2c/adv7180.c | 125
> ++++++++++++++++++++++++++++++++++++++++++--
> 1 file changed, 122 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c
> index 82c8296..678d6c9 100644
> --- a/drivers/media/i2c/adv7180.c
> +++ b/drivers/media/i2c/adv7180.c
> @@ -75,6 +75,9 @@
> #define ADV7180_HUE_DEF 0
> #define ADV7180_HUE_MAX 128
>
> +#define ADV7180_REG_DEF_VAL_Y 0x000c
> +#define ADV7180_REG_DEF_VAL_C 0x000d
> +
> #define ADV7180_REG_CTRL 0x000e
> #define ADV7180_CTRL_IRQ_SPACE 0x20
>
> @@ -168,6 +171,11 @@
> #define ADV7180_DEFAULT_VPP_I2C_ADDR 0x42
>
> #define V4L2_CID_ADV_FAST_SWITCH (V4L2_CID_DV_CLASS_BASE + 0x1010)
> +#define V4L2_CID_ADV_FREE_RUN_COLOR (V4L2_CID_DV_CLASS_BASE + 0x1002)
> +#define V4L2_CID_ADV_FREE_RUN_MODE (V4L2_CID_DV_CLASS_BASE + 0x1003)
> +#define V4L2_CID_ADV_FREE_RUN_PATTERN (V4L2_CID_DV_CLASS_BASE +
> 0x1004)
See same comment as I made in patch 8 regarding private controls.
> +
> +#define ADV7180_INPUT_DISABLED (~0x00)
>
> struct adv7180_state;
>
> @@ -193,6 +201,7 @@ struct adv7180_state {
> v4l2_std_id curr_norm;
> bool autodetect;
> bool powered;
> + bool force_free_run;
> u8 input;
>
> struct i2c_client *client;
> @@ -363,10 +372,13 @@ static int adv7180_s_routing(struct v4l2_subdev *sd,
> u32 input,
> goto out;
> }
>
> - ret = state->chip_info->select_input(state, input);
> -
> - if (ret == 0)
> + if (state->force_free_run) {
> state->input = input;
> + } else {
> + ret = state->chip_info->select_input(state, input);
> + if (ret == 0)
> + state->input = input;
> + }
> out:
> mutex_unlock(&state->mutex);
> return ret;
> @@ -488,6 +500,7 @@ static int adv7180_s_ctrl(struct v4l2_ctrl *ctrl)
> {
> struct adv7180_state *state = ctrl_to_adv7180(ctrl);
> int ret = mutex_lock_interruptible(&state->mutex);
> + int reg_val;
> int val;
>
> if (ret)
> @@ -526,6 +539,53 @@ static int adv7180_s_ctrl(struct v4l2_ctrl *ctrl)
> adv7180_write(state, ADV7180_REG_FLCONTROL, 0x00);
> }
> break;
> + case V4L2_CID_ADV_FREE_RUN_MODE:
> + switch (ctrl->val) {
> + case 1: /* Enabled */
> + ret = state->chip_info->select_input(state,
> + ADV7180_INPUT_DISABLED);
> + state->force_free_run = true;
> + break;
> + case 0: /* Disabled */
> + case 2: /* Automatic */
> + ret = state->chip_info->select_input(state,
> + state->input);
> + state->force_free_run = false;
> + break;
> + default:
> + break;
> + }
> + reg_val = adv7180_read(state, ADV7180_REG_DEF_VAL_Y);
> + reg_val &= 0xfc;
> + reg_val |= ctrl->val;
> + adv7180_write(state, ADV7180_REG_DEF_VAL_Y, reg_val);
> + break;
> + case V4L2_CID_ADV_FREE_RUN_PATTERN:
> + reg_val = adv7180_read(state, 0x14);
> + reg_val &= 0xf8;
> + reg_val |= ctrl->val;
> + adv7180_write(state, 0x14, reg_val);
> + break;
> + case V4L2_CID_ADV_FREE_RUN_COLOR: {
> + int r = (ctrl->val & 0xff0000) >> 16;
> + int g = (ctrl->val & 0x00ff00) >> 8;
> + int b = (ctrl->val & 0x0000ff);
> + /* RGB -> YCbCr, numerical approximation */
> + int y = ((66 * r + 129 * g + 25 * b + 128) >> 8) + 16;
> + int cb = ((-38 * r - 74 * g + 112 * b + 128) >> 8) + 128;
> + int cr = ((112 * r - 94 * g - 18 * b + 128) >> 8) + 128;
> +
> + /* Y is 6-bit, Cb and Cr 4-bit */
> + y >>= 2;
> + cb >>= 4;
> + cr >>= 4;
> +
> + reg_val = adv7180_read(state, ADV7180_REG_DEF_VAL_Y);
> + adv7180_write(state, ADV7180_REG_DEF_VAL_Y,
> + (y << 2) | (reg_val & 0x03));
> + adv7180_write(state, ADV7180_REG_DEF_VAL_C, (cr << 4) | cb);
> + break;
> + }
> default:
> ret = -EINVAL;
> }
> @@ -548,6 +608,53 @@ static const struct v4l2_ctrl_config
> adv7180_ctrl_fast_switch = {
> .step = 1,
> };
>
> +static const char * const adv7180_free_run_pattern_strings[] = {
> + "Solid",
> + "Bars",
> + "Luma Ramp",
> + "Reserved",
> + "Reserved",
> + "Boundary Box",
> +};
> +
> +static const char * const adv7180_free_run_mode_strings[] = {
> + "Disabled",
> + "Enabled",
> + "Automatic",
> +};
> +
> +static const struct v4l2_ctrl_config adv7180_ctrl_free_run_color = {
> + .ops = &adv7180_ctrl_ops,
> + .id = V4L2_CID_ADV_FREE_RUN_COLOR,
> + .name = "Free Running Color",
> + .type = V4L2_CTRL_TYPE_INTEGER,
> + .min = 0,
> + .max = 0xffffff,
> + .step = 0x1,
> +};
> +
> +static const struct v4l2_ctrl_config adv7180_ctrl_free_run_mode = {
> + .ops = &adv7180_ctrl_ops,
> + .id = V4L2_CID_ADV_FREE_RUN_MODE,
> + .name = "Free Running Mode",
> + .type = V4L2_CTRL_TYPE_MENU,
> + .min = 0,
> + .max = ARRAY_SIZE(adv7180_free_run_mode_strings) - 1,
> + .def = 2,
> + .qmenu = adv7180_free_run_mode_strings,
> +};
The adv7604 and adv7842 drivers have similar free-run controls. I am wondering
if these controls shouldn't be promoted to standard controls. Free-run support
is fairly common after all.
> +
> +static const struct v4l2_ctrl_config adv7180_ctrl_free_run_pattern = {
> + .ops = &adv7180_ctrl_ops,
> + .id = V4L2_CID_ADV_FREE_RUN_PATTERN,
> + .name = "Free Running Pattern",
> + .type = V4L2_CTRL_TYPE_MENU,
> + .min = 0,
> + .max = ARRAY_SIZE(adv7180_free_run_pattern_strings) - 1,
> + .menu_skip_mask = 0x18, /* 0x3 and 0x4 are reserved */
> + .qmenu = adv7180_free_run_pattern_strings,
> +};
Wouldn't it be better to use V4L2_CID_TEST_PATTERN for this?
> +
> static int adv7180_init_controls(struct adv7180_state *state)
> {
> v4l2_ctrl_handler_init(&state->ctrl_hdl, 4);
> @@ -565,6 +672,12 @@ static int adv7180_init_controls(struct adv7180_state
> *state)
> V4L2_CID_HUE, ADV7180_HUE_MIN,
> ADV7180_HUE_MAX, 1, ADV7180_HUE_DEF);
> v4l2_ctrl_new_custom(&state->ctrl_hdl, &adv7180_ctrl_fast_switch, NULL);
> + v4l2_ctrl_new_custom(&state->ctrl_hdl, &adv7180_ctrl_free_run_color,
> + NULL);
> + v4l2_ctrl_new_custom(&state->ctrl_hdl, &adv7180_ctrl_free_run_mode,
> + NULL);
> + v4l2_ctrl_new_custom(&state->ctrl_hdl, &adv7180_ctrl_free_run_pattern,
> + NULL);
>
> state->sd.ctrl_handler = &state->ctrl_hdl;
> if (state->ctrl_hdl.error) {
> @@ -784,6 +897,9 @@ static int adv7180_select_input(struct adv7180_state
> *state, unsigned int input)
> {
> int ret;
>
> + if (input == ADV7180_INPUT_DISABLED)
> + input = 0x00;
> +
> ret = adv7180_read(state, ADV7180_REG_INPUT_CONTROL);
> if (ret < 0)
> return ret;
> @@ -893,6 +1009,9 @@ static int adv7182_select_input(struct adv7180_state
> *state, unsigned int input)
> unsigned int i;
> int ret;
>
> + if (input == ADV7180_INPUT_DISABLED)
> + return adv7180_write(state, ADV7180_REG_INPUT_CONTROL, 0xff);
> +
> ret = adv7180_write(state, ADV7180_REG_INPUT_CONTROL, input);
> if (ret)
> return ret;
>
Regards,
Hans
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