diff options
Diffstat (limited to 'drivers/media/video/soc_camera.c')
| -rw-r--r-- | drivers/media/video/soc_camera.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/media/video/soc_camera.c b/drivers/media/video/soc_camera.c index 5e48c2cc1a4..17601750105 100644 --- a/drivers/media/video/soc_camera.c +++ b/drivers/media/video/soc_camera.c @@ -59,6 +59,40 @@ const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc( } EXPORT_SYMBOL(soc_camera_xlate_by_fourcc); +/** + * soc_camera_apply_sensor_flags() - apply platform SOCAM_SENSOR_INVERT_* flags + * @icl: camera platform parameters + * @flags: flags to be inverted according to platform configuration + * @return: resulting flags + */ +unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl, + unsigned long flags) +{ + unsigned long f; + + /* If only one of the two polarities is supported, switch to the opposite */ + if (icl->flags & SOCAM_SENSOR_INVERT_HSYNC) { + f = flags & (SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW); + if (f == SOCAM_HSYNC_ACTIVE_HIGH || f == SOCAM_HSYNC_ACTIVE_LOW) + flags ^= SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW; + } + + if (icl->flags & SOCAM_SENSOR_INVERT_VSYNC) { + f = flags & (SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW); + if (f == SOCAM_VSYNC_ACTIVE_HIGH || f == SOCAM_VSYNC_ACTIVE_LOW) + flags ^= SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW; + } + + if (icl->flags & SOCAM_SENSOR_INVERT_PCLK) { + f = flags & (SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING); + if (f == SOCAM_PCLK_SAMPLE_RISING || f == SOCAM_PCLK_SAMPLE_FALLING) + flags ^= SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING; + } + + return flags; +} +EXPORT_SYMBOL(soc_camera_apply_sensor_flags); + static int soc_camera_try_fmt_vid_cap(struct file *file, void *priv, struct v4l2_format *f) { |