From 2512c06441e3f0dd505c3f00274fff892c111c8f Mon Sep 17 00:00:00 2001 From: Dave Stevenson Date: Thu, 19 Nov 2020 17:35:43 +0100 Subject: [PATCH] media: ov5647: Support V4L2_CID_VBLANK control Adds vblank control to allow for frame rate control. Signed-off-by: Dave Stevenson Signed-off-by: Jacopo Mondi Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/i2c/ov5647.c | 50 +++++++++++++++++++++++++++++++++++--- 1 file changed, 46 insertions(+), 4 deletions(-) diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c index 2ffca9f658bf..654009be0d11 100644 --- a/drivers/media/i2c/ov5647.c +++ b/drivers/media/i2c/ov5647.c @@ -50,6 +50,8 @@ #define OV5647_REG_AEC_AGC 0x3503 #define OV5647_REG_GAIN_HI 0x350a #define OV5647_REG_GAIN_LO 0x350b +#define OV5647_REG_VTS_HI 0x380e +#define OV5647_REG_VTS_LO 0x380f #define OV5647_REG_FRAME_OFF_NUMBER 0x4202 #define OV5647_REG_MIPI_CTRL00 0x4800 #define OV5647_REG_MIPI_CTRL14 0x4814 @@ -68,6 +70,9 @@ #define OV5647_PIXEL_ARRAY_WIDTH 2592U #define OV5647_PIXEL_ARRAY_HEIGHT 1944U +#define OV5647_VBLANK_MIN 4 +#define OV5647_VTS_MAX 32767 + struct regval_list { u16 addr; u8 data; @@ -78,6 +83,7 @@ struct ov5647_mode { struct v4l2_rect crop; u64 pixel_rate; int hts; + int vts; const struct regval_list *reg_list; unsigned int num_regs; }; @@ -100,6 +106,7 @@ struct ov5647 { const struct ov5647_mode *mode; struct v4l2_ctrl *pixel_rate; struct v4l2_ctrl *hblank; + struct v4l2_ctrl *vblank; }; static inline struct ov5647 *to_sensor(struct v4l2_subdev *sd) @@ -151,8 +158,6 @@ static const struct regval_list ov5647_640x480_8bpp[] = { {0x3b07, 0x0c}, {0x380c, 0x07}, {0x380d, 0x68}, - {0x380e, 0x03}, - {0x380f, 0xd8}, {0x3814, 0x31}, {0x3815, 0x31}, {0x3708, 0x64}, @@ -588,6 +593,7 @@ static const struct ov5647_mode ov5647_8bpp_modes[] = { }, .pixel_rate = 77291670, .hts = 1896, + .vts = 0x3d8, .reg_list = ov5647_640x480_8bpp, .num_regs = ARRAY_SIZE(ov5647_640x480_8bpp) }, @@ -611,6 +617,7 @@ static const struct ov5647_mode ov5647_10bpp_modes[] = { }, .pixel_rate = 87500000, .hts = 2844, + .vts = 0x7b0, .reg_list = ov5647_2592x1944_10bpp, .num_regs = ARRAY_SIZE(ov5647_2592x1944_10bpp) }, @@ -631,6 +638,7 @@ static const struct ov5647_mode ov5647_10bpp_modes[] = { }, .pixel_rate = 81666700, .hts = 2416, + .vts = 0x450, .reg_list = ov5647_1080p30_10bpp, .num_regs = ARRAY_SIZE(ov5647_1080p30_10bpp) }, @@ -651,6 +659,7 @@ static const struct ov5647_mode ov5647_10bpp_modes[] = { }, .pixel_rate = 81666700, .hts = 1896, + .vts = 0x59b, .reg_list = ov5647_2x2binned_10bpp, .num_regs = ARRAY_SIZE(ov5647_2x2binned_10bpp) }, @@ -671,6 +680,7 @@ static const struct ov5647_mode ov5647_10bpp_modes[] = { }, .pixel_rate = 55000000, .hts = 1852, + .vts = 0x1f8, .reg_list = ov5647_640x480_10bpp, .num_regs = ARRAY_SIZE(ov5647_640x480_10bpp) }, @@ -695,6 +705,22 @@ static const struct ov5647_format_list ov5647_formats[] = { #define OV5647_DEFAULT_MODE (&ov5647_formats[1].modes[3]) #define OV5647_DEFAULT_FORMAT (ov5647_formats[1].modes[3].format) +static int ov5647_write16(struct v4l2_subdev *sd, u16 reg, u16 val) +{ + unsigned char data[4] = { reg >> 8, reg & 0xff, val >> 8, val & 0xff}; + struct i2c_client *client = v4l2_get_subdevdata(sd); + int ret; + + ret = i2c_master_send(client, data, 4); + if (ret < 0) { + dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n", + __func__, reg); + return ret; + } + + return 0; +} + static int ov5647_write(struct v4l2_subdev *sd, u16 reg, u8 val) { unsigned char data[3] = { reg >> 8, reg & 0xff, val}; @@ -1097,7 +1123,7 @@ static int ov5647_set_pad_fmt(struct v4l2_subdev *sd, if (format->which == V4L2_SUBDEV_FORMAT_TRY) { *v4l2_subdev_get_try_format(sd, cfg, format->pad) = mode->format; } else { - int hblank; + int hblank, vblank; sensor->mode = mode; __v4l2_ctrl_modify_range(sensor->pixel_rate, mode->pixel_rate, @@ -1106,6 +1132,12 @@ static int ov5647_set_pad_fmt(struct v4l2_subdev *sd, hblank = mode->hts - mode->format.width; __v4l2_ctrl_modify_range(sensor->hblank, hblank, hblank, 1, hblank); + + vblank = mode->vts - mode->format.height; + __v4l2_ctrl_modify_range(sensor->vblank, OV5647_VBLANK_MIN, + OV5647_VTS_MAX - mode->format.height, + 1, vblank); + __v4l2_ctrl_s_ctrl(sensor->vblank, vblank); } *fmt = mode->format; mutex_unlock(&sensor->lock); @@ -1317,6 +1349,9 @@ static int ov5647_s_ctrl(struct v4l2_ctrl *ctrl) case V4L2_CID_HBLANK: /* Read-only, but we adjust it based on mode. */ return 0; + case V4L2_CID_VBLANK: + return ov5647_write16(sd, OV5647_REG_VTS_HI, + sensor->mode->format.height + ctrl->val); default: dev_info(&client->dev, "Control (id:0x%x, val:0x%x) not supported\n", @@ -1336,7 +1371,7 @@ static int ov5647_init_controls(struct ov5647 *sensor) struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd); int hblank; - v4l2_ctrl_handler_init(&sensor->ctrls, 7); + v4l2_ctrl_handler_init(&sensor->ctrls, 8); v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, V4L2_CID_AUTOGAIN, 0, 1, 1, 0); @@ -1369,6 +1404,13 @@ static int ov5647_init_controls(struct ov5647 *sensor) V4L2_CID_HBLANK, hblank, hblank, 1, hblank); + sensor->vblank = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops, + V4L2_CID_VBLANK, OV5647_VBLANK_MIN, + OV5647_VTS_MAX - + sensor->mode->format.height, 1, + sensor->mode->vts - + sensor->mode->format.height); + if (sensor->ctrls.error) goto handler_free;