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| author | Daniel Scally <djrscally@gmail.com> | 2021-11-23 01:00:09 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-11-30 10:56:22 +0100 |
| commit | 9293aafe3745f2a2bb678a14eb589af4e6ee5ffe (patch) | |
| tree | c61a8adfe8b26ab9136308f3917bd72b65befbd3 | |
| parent | d938b2f29be6ad5eb1b04c5bf0e3afa4348e9195 (diff) | |
| download | linux-9293aafe3745f2a2bb678a14eb589af4e6ee5ffe.tar.bz2 | |
media: i2c: Add vblank control to ov8865
Add a V4L2_CID_VBLANK control to the ov8865 driver.
Signed-off-by: Daniel Scally <djrscally@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
| -rw-r--r-- | drivers/media/i2c/ov8865.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/media/i2c/ov8865.c b/drivers/media/i2c/ov8865.c index 2d5b7b8c2c9e..27043b9426a1 100644 --- a/drivers/media/i2c/ov8865.c +++ b/drivers/media/i2c/ov8865.c @@ -183,6 +183,8 @@ #define OV8865_VTS_H(v) (((v) & GENMASK(11, 8)) >> 8) #define OV8865_VTS_L_REG 0x380f #define OV8865_VTS_L(v) ((v) & GENMASK(7, 0)) +#define OV8865_TIMING_MAX_VTS 0xffff +#define OV8865_TIMING_MIN_VTS 0x04 #define OV8865_OFFSET_X_H_REG 0x3810 #define OV8865_OFFSET_X_H(v) (((v) & GENMASK(15, 8)) >> 8) #define OV8865_OFFSET_X_L_REG 0x3811 @@ -675,6 +677,7 @@ struct ov8865_state { struct ov8865_ctrls { struct v4l2_ctrl *link_freq; struct v4l2_ctrl *pixel_rate; + struct v4l2_ctrl *vblank; struct v4l2_ctrl_handler handler; }; @@ -2225,6 +2228,20 @@ static int ov8865_test_pattern_configure(struct ov8865_sensor *sensor, ov8865_test_pattern_bits[index]); } +/* Blanking */ + +static int ov8865_vts_configure(struct ov8865_sensor *sensor, u32 vblank) +{ + u16 vts = sensor->state.mode->output_size_y + vblank; + int ret; + + ret = ov8865_write(sensor, OV8865_VTS_H_REG, OV8865_VTS_H(vts)); + if (ret) + return ret; + + return ov8865_write(sensor, OV8865_VTS_L_REG, OV8865_VTS_L(vts)); +} + /* State */ static int ov8865_state_mipi_configure(struct ov8865_sensor *sensor, @@ -2476,6 +2493,8 @@ static int ov8865_s_ctrl(struct v4l2_ctrl *ctrl) case V4L2_CID_TEST_PATTERN: index = (unsigned int)ctrl->val; return ov8865_test_pattern_configure(sensor, index); + case V4L2_CID_VBLANK: + return ov8865_vts_configure(sensor, ctrl->val); default: return -EINVAL; } @@ -2492,6 +2511,8 @@ static int ov8865_ctrls_init(struct ov8865_sensor *sensor) struct ov8865_ctrls *ctrls = &sensor->ctrls; struct v4l2_ctrl_handler *handler = &ctrls->handler; const struct v4l2_ctrl_ops *ops = &ov8865_ctrl_ops; + const struct ov8865_mode *mode = &ov8865_modes[0]; + unsigned int vblank_max, vblank_def; int ret; v4l2_ctrl_handler_init(handler, 32); @@ -2528,6 +2549,13 @@ static int ov8865_ctrls_init(struct ov8865_sensor *sensor) ARRAY_SIZE(ov8865_test_pattern_menu) - 1, 0, 0, ov8865_test_pattern_menu); + /* Blanking */ + vblank_max = OV8865_TIMING_MAX_VTS - mode->output_size_y; + vblank_def = mode->vts - mode->output_size_y; + ctrls->vblank = v4l2_ctrl_new_std(handler, ops, V4L2_CID_VBLANK, + OV8865_TIMING_MIN_VTS, vblank_max, 1, + vblank_def); + /* MIPI CSI-2 */ ctrls->link_freq = @@ -2708,6 +2736,10 @@ static int ov8865_set_fmt(struct v4l2_subdev *subdev, sensor->state.mbus_code != mbus_code) ret = ov8865_state_configure(sensor, mode, mbus_code); + __v4l2_ctrl_modify_range(sensor->ctrls.vblank, OV8865_TIMING_MIN_VTS, + OV8865_TIMING_MAX_VTS - mode->output_size_y, + 1, mode->vts - mode->output_size_y); + complete: mutex_unlock(&sensor->mutex); |