Commit 7a3b8d4b authored by Jacopo Mondi's avatar Jacopo Mondi Committed by Mauro Carvalho Chehab
Browse files

media: ov5640: Add LINK_FREQ control 



Add the V4L2_CID_LINK_FREQ control to the ov5640 driver.
Make the control read-only for the moment.

Signed-off-by: default avatarJacopo Mondi <jacopo@jmondi.org>
Reviewed-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
parent 2d7671f6

drivers/media/i2c/ov5640.c

+26 −0
Original line number Diff line number Diff line
@@ -141,6 +141,24 @@ static const u32 ov5640_pixel_rates[] = { 
	[OV5640_PIXEL_RATE_48M] = 48000000,

};



/*

 * MIPI CSI-2 link frequencies.

 *

 * Derived from the above defined pixel rate for bpp = (8, 16, 24) and

 * data_lanes = (1, 2)

 *

 * link_freq = (pixel_rate * bpp) / (2 * data_lanes)

 */

static const s64 ov5640_csi2_link_freqs[] = {

	992000000, 888000000, 768000000, 744000000, 672000000, 672000000,

	592000000, 592000000, 576000000, 576000000, 496000000, 496000000,

	384000000, 384000000, 384000000, 336000000, 296000000, 288000000,

	248000000, 192000000, 192000000, 192000000, 96000000,

};



/* Link freq for default mode: UYVY 16 bpp, 2 data lanes. */

#define OV5640_DEFAULT_LINK_FREQ	13



enum ov5640_format_mux {

	OV5640_FMT_MUX_YUV422 = 0,

	OV5640_FMT_MUX_RGB,
@@ -258,6 +276,7 @@ struct ov5640_mode_info { 
struct ov5640_ctrls {

	struct v4l2_ctrl_handler handler;

	struct v4l2_ctrl *pixel_rate;

	struct v4l2_ctrl *link_freq;

	struct {

		struct v4l2_ctrl *auto_exp;

		struct v4l2_ctrl *exposure;
@@ -2855,6 +2874,12 @@ static int ov5640_init_controls(struct ov5640_dev *sensor) 
			      ov5640_pixel_rates[0], 1,

			      ov5640_pixel_rates[mode->pixel_rate]);



	ctrls->link_freq = v4l2_ctrl_new_int_menu(hdl, ops,

					V4L2_CID_LINK_FREQ,

					ARRAY_SIZE(ov5640_csi2_link_freqs) - 1,

					OV5640_DEFAULT_LINK_FREQ,

					ov5640_csi2_link_freqs);



	/* Auto/manual white balance */

	ctrls->auto_wb = v4l2_ctrl_new_std(hdl, ops,

					   V4L2_CID_AUTO_WHITE_BALANCE,
@@ -2903,6 +2928,7 @@ static int ov5640_init_controls(struct ov5640_dev *sensor) 
	}



	ctrls->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY;

	ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;

	ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE;

	ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;