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Subject: media: i2c: imx334: add support for test pattern generator
Author: Shravan Chippa <shravan.chi...@microchip.com>
Date: Fri Aug 4 20:45:41 2023 +0530
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.chi...@microchip.com>
Acked-by: Daniele Alessandrelli <daniele.alessandre...@intel.com>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
drivers/media/i2c/imx334.c | 57 +++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 56 insertions(+), 1 deletion(-)
---
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);
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