On Fri, 2023-08-04 at 20:45 +0530, shravan kumar wrote:
> From: Shravan Chippa <shravan.chippa@xxxxxxxxxxxxx>
>
> Add support for the imx334's test pattern generator.
> By default the test pattern generator is disabled, so add support for
> enabling and disabling horizontal and vertical colour bars.
>
> Signed-off-by: Shravan Chippa <shravan.chippa@xxxxxxxxxxxxx>
> ---
> drivers/media/i2c/imx334.c | 57 +++++++++++++++++++++++++++++++++++++-
> 1 file changed, 56 insertions(+), 1 deletion(-)
Acked-by: Daniele Alessandrelli <daniele.alessandrelli@xxxxxxxxx>
>
> diff --git a/drivers/media/i2c/imx334.c b/drivers/media/i2c/imx334.c
> index d722c9b7cd31..91c79af70734 100644
> --- a/drivers/media/i2c/imx334.c
> +++ b/drivers/media/i2c/imx334.c
> @@ -56,6 +56,24 @@
> #define IMX334_REG_MIN 0x00
> #define IMX334_REG_MAX 0xfffff
>
> +/* Test Pattern Control */
> +#define IMX334_REG_TP 0x329e
> +#define IMX334_TP_COLOR_HBARS 0xA
> +#define IMX334_TP_COLOR_VBARS 0xB
> +
> +#define IMX334_TPG_EN_DOUT 0x329c
> +#define IMX334_TP_ENABLE 0x1
> +#define IMX334_TP_DISABLE 0x0
> +
> +#define IMX334_TPG_COLORW 0x32a0
> +#define IMX334_TPG_COLORW_120P 0x13
> +
> +#define IMX334_TP_CLK_EN 0x3148
> +#define IMX334_TP_CLK_EN_VAL 0x10
> +#define IMX334_TP_CLK_DIS_VAL 0x0
> +
> +#define IMX334_DIG_CLP_MODE 0x3280
> +
> /**
> * struct imx334_reg - imx334 sensor register
> * @address: Register address
> @@ -430,6 +448,18 @@ static const struct imx334_reg mode_3840x2160_regs[] = {
> {0x3a29, 0x00},
> };
>
> +static const char * const imx334_test_pattern_menu[] = {
> + "Disabled",
> + "Vertical Color Bars",
> + "Horizontal Color Bars",
> +};
> +
> +static const int imx334_test_pattern_val[] = {
> + IMX334_TP_DISABLE,
> + IMX334_TP_COLOR_HBARS,
> + IMX334_TP_COLOR_VBARS,
> +};
> +
> static const struct imx334_reg raw10_framefmt_regs[] = {
> {0x3050, 0x00},
> {0x319d, 0x00},
> @@ -716,6 +746,26 @@ static int imx334_set_ctrl(struct v4l2_ctrl *ctrl)
> case V4L2_CID_HBLANK:
> ret = 0;
> break;
> + case V4L2_CID_TEST_PATTERN:
> + if (ctrl->val) {
> + imx334_write_reg(imx334, IMX334_TP_CLK_EN, 1,
> + IMX334_TP_CLK_EN_VAL);
> + imx334_write_reg(imx334, IMX334_DIG_CLP_MODE, 1, 0x0);
> + imx334_write_reg(imx334, IMX334_TPG_COLORW, 1,
> + IMX334_TPG_COLORW_120P);
> + imx334_write_reg(imx334, IMX334_REG_TP, 1,
> + imx334_test_pattern_val[ctrl->val]);
> + imx334_write_reg(imx334, IMX334_TPG_EN_DOUT, 1,
> + IMX334_TP_ENABLE);
> + } else {
> + imx334_write_reg(imx334, IMX334_DIG_CLP_MODE, 1, 0x1);
> + imx334_write_reg(imx334, IMX334_TP_CLK_EN, 1,
> + IMX334_TP_CLK_DIS_VAL);
> + imx334_write_reg(imx334, IMX334_TPG_EN_DOUT, 1,
> + IMX334_TP_DISABLE);
> + }
> + ret = 0;
> + break;
> default:
> dev_err(imx334->dev, "Invalid control %d", ctrl->id);
> ret = -EINVAL;
> @@ -1222,7 +1272,7 @@ static int imx334_init_controls(struct imx334 *imx334)
> u32 lpfr;
> int ret;
>
> - ret = v4l2_ctrl_handler_init(ctrl_hdlr, 6);
> + ret = v4l2_ctrl_handler_init(ctrl_hdlr, 7);
> if (ret)
> return ret;
>
> @@ -1282,6 +1332,11 @@ static int imx334_init_controls(struct imx334 *imx334)
> if (imx334->hblank_ctrl)
> imx334->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
>
> + v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx334_ctrl_ops,
> + V4L2_CID_TEST_PATTERN,
> + ARRAY_SIZE(imx334_test_pattern_menu) - 1,
> + 0, 0, imx334_test_pattern_menu);
> +
> if (ctrl_hdlr->error) {
> dev_err(imx334->dev, "control init failed: %d",
> ctrl_hdlr->error);
