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65 lines
2.2 KiB
Diff
65 lines
2.2 KiB
Diff
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From 9ed9132402b92d1957927c8719f37d8b95bb00ff Mon Sep 17 00:00:00 2001
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From: neocortex-vision <oss@neocortexvision.com>
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Date: Thu, 28 Oct 2021 17:37:36 +0100
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Subject: [PATCH] media: i2c: imx477: Add vsync trigger_mode parameter
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trigger_mode == 0 (default) => no effect / no registers written
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trigger_mode == 1 => source
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trigger_mode == 2 => sink
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This can be set e.g. in /boot/cmdline.txt as imx477.trigger_mode=N
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Signed-off-by: Jonas Jacob <jonas.jacob@neocortexvision.com>
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---
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drivers/media/i2c/imx477.c | 25 +++++++++++++++++++++++++
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1 file changed, 25 insertions(+)
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--- a/drivers/media/i2c/imx477.c
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+++ b/drivers/media/i2c/imx477.c
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@@ -25,6 +25,10 @@ static int dpc_enable = 1;
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module_param(dpc_enable, int, 0644);
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MODULE_PARM_DESC(dpc_enable, "Enable on-sensor DPC");
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+static int trigger_mode;
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+module_param(trigger_mode, int, 0644);
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+MODULE_PARM_DESC(trigger_mode, "Set vsync trigger mode: 1=source, 2=sink");
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+
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#define IMX477_REG_VALUE_08BIT 1
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#define IMX477_REG_VALUE_16BIT 2
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@@ -98,6 +102,12 @@ MODULE_PARM_DESC(dpc_enable, "Enable on-
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#define IMX477_TEST_PATTERN_B_DEFAULT 0
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#define IMX477_TEST_PATTERN_GB_DEFAULT 0
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+/* Trigger mode */
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+#define IMX477_REG_MC_MODE 0x3f0b
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+#define IMX477_REG_MS_SEL 0x3041
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+#define IMX477_REG_XVS_IO_CTRL 0x3040
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+#define IMX477_REG_EXTOUT_EN 0x4b81
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+
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/* Embedded metadata stream structure */
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#define IMX477_EMBEDDED_LINE_WIDTH 16384
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#define IMX477_NUM_EMBEDDED_LINES 1
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@@ -1721,6 +1731,21 @@ static int imx477_start_streaming(struct
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imx477_write_reg(imx477, 0x0b05, IMX477_REG_VALUE_08BIT, !!dpc_enable);
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imx477_write_reg(imx477, 0x0b06, IMX477_REG_VALUE_08BIT, !!dpc_enable);
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+ /* Set vsync trigger mode */
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+ if (trigger_mode != 0) {
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+ /* trigger_mode == 1 for source, 2 for sink */
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+ const u32 val = (trigger_mode == 1) ? 1 : 0;
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+
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+ imx477_write_reg(imx477, IMX477_REG_MC_MODE,
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+ IMX477_REG_VALUE_08BIT, 1);
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+ imx477_write_reg(imx477, IMX477_REG_MS_SEL,
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+ IMX477_REG_VALUE_08BIT, val);
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+ imx477_write_reg(imx477, IMX477_REG_XVS_IO_CTRL,
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+ IMX477_REG_VALUE_08BIT, val);
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+ imx477_write_reg(imx477, IMX477_REG_EXTOUT_EN,
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+ IMX477_REG_VALUE_08BIT, val);
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+ }
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+
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/* Apply customized values from user */
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ret = __v4l2_ctrl_handler_setup(imx477->sd.ctrl_handler);
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if (ret)
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