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Subject: media: ov2680: Add link-freq and pixel-rate controls Author: Hans de Goede <[email protected]> Date: Thu Aug 3 11:33:43 2023 +0200 Add read-only link-freq and pixel-rate controls. This is necessary for the sensor to work with the ipu3-cio2 driver and for libcamera. Acked-by: Rui Miguel Silva <[email protected]> Signed-off-by: Hans de Goede <[email protected]> Signed-off-by: Sakari Ailus <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> drivers/media/i2c/ov2680.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) --- diff --git a/drivers/media/i2c/ov2680.c b/drivers/media/i2c/ov2680.c index 1f59013e440c..83ec034b5307 100644 --- a/drivers/media/i2c/ov2680.c +++ b/drivers/media/i2c/ov2680.c @@ -75,6 +75,12 @@ #define OV2680_MIN_CROP_WIDTH 2 #define OV2680_MIN_CROP_HEIGHT 2 +/* Fixed pre-div of 1/2 */ +#define OV2680_PLL_PREDIV0 2 + +/* Pre-div configurable through reg 0x3080, left at its default of 0x02 : 1/2 */ +#define OV2680_PLL_PREDIV 2 + /* 66MHz pixel clock: 66MHz / 1704 * 1294 = 30fps */ #define OV2680_PIXELS_PER_LINE 1704 #define OV2680_LINES_PER_FRAME 1294 @@ -121,6 +127,8 @@ struct ov2680_ctrls { struct v4l2_ctrl *hflip; struct v4l2_ctrl *vflip; struct v4l2_ctrl *test_pattern; + struct v4l2_ctrl *link_freq; + struct v4l2_ctrl *pixel_rate; }; struct ov2680_mode { @@ -147,6 +155,8 @@ struct ov2680_dev { struct clk *xvclk; u32 xvclk_freq; u8 pll_mult; + s64 link_freq[1]; + u64 pixel_rate; struct regulator_bulk_data supplies[OV2680_NUM_SUPPLIES]; struct gpio_desc *pwdn_gpio; @@ -931,6 +941,12 @@ static int ov2680_v4l2_register(struct ov2680_dev *sensor) ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN, 0, 1023, 1, 250); + ctrls->link_freq = v4l2_ctrl_new_int_menu(hdl, NULL, V4L2_CID_LINK_FREQ, + 0, 0, sensor->link_freq); + ctrls->pixel_rate = v4l2_ctrl_new_std(hdl, NULL, V4L2_CID_PIXEL_RATE, + 0, sensor->pixel_rate, + 1, sensor->pixel_rate); + if (hdl->error) { ret = hdl->error; goto cleanup_entity; @@ -938,6 +954,7 @@ static int ov2680_v4l2_register(struct ov2680_dev *sensor) ctrls->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; ctrls->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; + ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; sensor->sd.ctrl_handler = hdl; @@ -1067,6 +1084,13 @@ static int ov2680_parse_dt(struct ov2680_dev *sensor) sensor->pll_mult = ov2680_pll_multipliers[i]; + sensor->link_freq[0] = sensor->xvclk_freq / OV2680_PLL_PREDIV0 / + OV2680_PLL_PREDIV * sensor->pll_mult; + + /* CSI-2 is double data rate, bus-format is 10 bpp */ + sensor->pixel_rate = sensor->link_freq[0] * 2; + do_div(sensor->pixel_rate, 10); + return 0; } _______________________________________________ linuxtv-commits mailing list [email protected] https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
