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20ea6adbf1
Build system: x86_64 Build-tested: bcm2708, bcm2709, bcm2710, bcm2711 Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B Signed-off-by: Marty Jones <mj8263788@gmail.com> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
130 lines
4.2 KiB
Diff
130 lines
4.2 KiB
Diff
From 055e3d70b0227e26d58b2efc4561eb21a3fbf640 Mon Sep 17 00:00:00 2001
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From: Naushir Patuck <naush@raspberrypi.com>
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Date: Tue, 8 Feb 2022 13:49:11 +0000
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Subject: [PATCH] media: i2c: imx219: Scale the pixel clock rate for
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the 640x480 mode
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The 640x480 mode uses a special binning mode for high framerate operation where
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the pixel rate is effectively doubled. Account for this when setting up the
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pixel clock rate, and applying the vblank and exposure controls.
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Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
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---
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drivers/media/i2c/imx219.c | 33 ++++++++++++++++++++++++++-------
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1 file changed, 26 insertions(+), 7 deletions(-)
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--- a/drivers/media/i2c/imx219.c
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+++ b/drivers/media/i2c/imx219.c
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@@ -153,6 +153,9 @@ struct imx219_mode {
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/* Default register values */
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struct imx219_reg_list reg_list;
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+
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+ /* Relative pixel clock rate factor for the mode. */
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+ unsigned int rate_factor;
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};
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/*
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@@ -495,6 +498,7 @@ static const struct imx219_mode supporte
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.num_of_regs = ARRAY_SIZE(mode_3280x2464_regs),
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.regs = mode_3280x2464_regs,
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},
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+ .rate_factor = 1,
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},
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{
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/* 1080P 30fps cropped */
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@@ -511,6 +515,7 @@ static const struct imx219_mode supporte
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.num_of_regs = ARRAY_SIZE(mode_1920_1080_regs),
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.regs = mode_1920_1080_regs,
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},
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+ .rate_factor = 1,
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},
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{
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/* 2x2 binned 30fps mode */
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@@ -527,6 +532,7 @@ static const struct imx219_mode supporte
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.num_of_regs = ARRAY_SIZE(mode_1640_1232_regs),
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.regs = mode_1640_1232_regs,
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},
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+ .rate_factor = 1,
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},
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{
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/* 640x480 30fps mode */
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@@ -543,6 +549,11 @@ static const struct imx219_mode supporte
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.num_of_regs = ARRAY_SIZE(mode_640_480_regs),
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.regs = mode_640_480_regs,
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},
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+ /*
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+ * This mode uses a special 2x2 binning that doubles the
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+ * the internal pixel clock rate.
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+ */
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+ .rate_factor = 2,
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},
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};
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@@ -765,7 +776,8 @@ static int imx219_set_ctrl(struct v4l2_c
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break;
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case V4L2_CID_EXPOSURE:
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ret = imx219_write_reg(imx219, IMX219_REG_EXPOSURE,
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- IMX219_REG_VALUE_16BIT, ctrl->val);
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+ IMX219_REG_VALUE_16BIT,
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+ ctrl->val / imx219->mode->rate_factor);
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break;
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case V4L2_CID_DIGITAL_GAIN:
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ret = imx219_write_reg(imx219, IMX219_REG_DIGITAL_GAIN,
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@@ -785,7 +797,8 @@ static int imx219_set_ctrl(struct v4l2_c
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case V4L2_CID_VBLANK:
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ret = imx219_write_reg(imx219, IMX219_REG_VTS,
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IMX219_REG_VALUE_16BIT,
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- imx219->mode->height + ctrl->val);
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+ (imx219->mode->height + ctrl->val) /
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+ imx219->mode->rate_factor);
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break;
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case V4L2_CID_TEST_PATTERN_RED:
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ret = imx219_write_reg(imx219, IMX219_REG_TESTP_RED,
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@@ -957,7 +970,7 @@ static int imx219_set_pad_format(struct
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struct imx219 *imx219 = to_imx219(sd);
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const struct imx219_mode *mode;
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struct v4l2_mbus_framefmt *framefmt;
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- int exposure_max, exposure_def, hblank;
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+ int exposure_max, exposure_def, hblank, pixel_rate;
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unsigned int i;
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if (fmt->pad >= NUM_PADS)
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@@ -1018,6 +1031,12 @@ static int imx219_set_pad_format(struct
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hblank = IMX219_PPL_DEFAULT - mode->width;
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__v4l2_ctrl_modify_range(imx219->hblank, hblank, hblank,
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1, hblank);
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+
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+ /* Scale the pixel rate based on the mode specific factor */
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+ pixel_rate =
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+ IMX219_PIXEL_RATE * imx219->mode->rate_factor;
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+ __v4l2_ctrl_modify_range(imx219->pixel_rate, pixel_rate,
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+ pixel_rate, 1, pixel_rate);
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}
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} else {
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if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
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@@ -1362,7 +1381,7 @@ static int imx219_init_controls(struct i
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struct v4l2_ctrl_handler *ctrl_hdlr;
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unsigned int height = imx219->mode->height;
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struct v4l2_fwnode_device_properties props;
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- int exposure_max, exposure_def, hblank;
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+ int exposure_max, exposure_def, hblank, pixel_rate;
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int i, ret;
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ctrl_hdlr = &imx219->ctrl_handler;
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@@ -1374,11 +1393,11 @@ static int imx219_init_controls(struct i
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ctrl_hdlr->lock = &imx219->mutex;
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/* By default, PIXEL_RATE is read only */
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+ pixel_rate = IMX219_PIXEL_RATE * imx219->mode->rate_factor;
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imx219->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops,
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V4L2_CID_PIXEL_RATE,
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- IMX219_PIXEL_RATE,
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- IMX219_PIXEL_RATE, 1,
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- IMX219_PIXEL_RATE);
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+ pixel_rate, pixel_rate,
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+ 1, pixel_rate);
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imx219->link_freq =
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v4l2_ctrl_new_int_menu(ctrl_hdlr, &imx219_ctrl_ops,
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