diff options
| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2021-06-23 16:20:50 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-08-04 14:43:51 +0200 |
| commit | 41a95d043fa59e99ce4440c38640576232ef5f74 (patch) | |
| tree | f714ce90d078512d2e446ad19ad77a74a0bc4434 /drivers/media | |
| parent | 253171a0da67304f0ee7358b37df7b715c65dd77 (diff) | |
| download | linux-41a95d043fa59e99ce4440c38640576232ef5f74.tar.gz | |
media: ccs: Implement support for manual LP control
Use the pre_streamon callback to transition the transmitter to either LP-11 or LP-111 mode if supported by the sensor. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/i2c/ccs/ccs-core.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/media/i2c/ccs/ccs-core.c b/drivers/media/i2c/ccs/ccs-core.c index 121cbe406fe4..5363f3bcafe3 100644 --- a/drivers/media/i2c/ccs/ccs-core.c +++ b/drivers/media/i2c/ccs/ccs-core.c @@ -1943,6 +1943,51 @@ static int ccs_set_stream(struct v4l2_subdev *subdev, int enable) return rval; } +static int ccs_pre_streamon(struct v4l2_subdev *subdev, u32 flags) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + int rval; + + if (flags & V4L2_SUBDEV_PRE_STREAMON_FL_MANUAL_LP) { + switch (sensor->hwcfg.csi_signalling_mode) { + case CCS_CSI_SIGNALING_MODE_CSI_2_DPHY: + if (!(CCS_LIM(sensor, PHY_CTRL_CAPABILITY_2) & + CCS_PHY_CTRL_CAPABILITY_2_MANUAL_LP_DPHY)) + return -EACCES; + break; + case CCS_CSI_SIGNALING_MODE_CSI_2_CPHY: + if (!(CCS_LIM(sensor, PHY_CTRL_CAPABILITY_2) & + CCS_PHY_CTRL_CAPABILITY_2_MANUAL_LP_CPHY)) + return -EACCES; + break; + default: + return -EACCES; + } + } + + rval = ccs_pm_get_init(sensor); + if (rval) + return rval; + + if (flags & V4L2_SUBDEV_PRE_STREAMON_FL_MANUAL_LP) { + rval = ccs_write(sensor, MANUAL_LP_CTRL, + CCS_MANUAL_LP_CTRL_ENABLE); + if (rval) + pm_runtime_put(&client->dev); + } + + return rval; +} + +static int ccs_post_streamoff(struct v4l2_subdev *subdev) +{ + struct ccs_sensor *sensor = to_ccs_sensor(subdev); + struct i2c_client *client = v4l2_get_subdevdata(&sensor->src->sd); + + return pm_runtime_put(&client->dev); +} + static int ccs_enum_mbus_code(struct v4l2_subdev *subdev, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_mbus_code_enum *code) @@ -3055,6 +3100,8 @@ static int ccs_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) static const struct v4l2_subdev_video_ops ccs_video_ops = { .s_stream = ccs_set_stream, + .pre_streamon = ccs_pre_streamon, + .post_streamoff = ccs_post_streamoff, }; static const struct v4l2_subdev_pad_ops ccs_pad_ops = { |