From 32c69fcc785a2f8122c73d44ad160d9cfc4c9615 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Tue, 26 Jul 2011 11:38:01 -0300 Subject: [media] V4L: soc-camera: add helper functions for new bus configuration type Add helper functions to process the new media bus configuration type similar to soc_camera_apply_sensor_flags() and soc_camera_bus_param_compatible(). Signed-off-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/soc_camera.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'drivers/media/video/soc_camera.c') diff --git a/drivers/media/video/soc_camera.c b/drivers/media/video/soc_camera.c index 5bdfe7e..8b16152 100644 --- a/drivers/media/video/soc_camera.c +++ b/drivers/media/video/soc_camera.c @@ -108,6 +108,40 @@ const struct soc_camera_format_xlate *soc_camera_xlate_by_fourcc( EXPORT_SYMBOL(soc_camera_xlate_by_fourcc); /** + * soc_camera_apply_board_flags() - apply platform SOCAM_SENSOR_INVERT_* flags + * @icl: camera platform parameters + * @cfg: media bus configuration + * @return: resulting flags + */ +unsigned long soc_camera_apply_board_flags(struct soc_camera_link *icl, + const struct v4l2_mbus_config *cfg) +{ + unsigned long f, flags = cfg->flags; + + /* If only one of the two polarities is supported, switch to the opposite */ + if (icl->flags & SOCAM_SENSOR_INVERT_HSYNC) { + f = flags & (V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW); + if (f == V4L2_MBUS_HSYNC_ACTIVE_HIGH || f == V4L2_MBUS_HSYNC_ACTIVE_LOW) + flags ^= V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_HSYNC_ACTIVE_LOW; + } + + if (icl->flags & SOCAM_SENSOR_INVERT_VSYNC) { + f = flags & (V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW); + if (f == V4L2_MBUS_VSYNC_ACTIVE_HIGH || f == V4L2_MBUS_VSYNC_ACTIVE_LOW) + flags ^= V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW; + } + + if (icl->flags & SOCAM_SENSOR_INVERT_PCLK) { + f = flags & (V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING); + if (f == V4L2_MBUS_PCLK_SAMPLE_RISING || f == V4L2_MBUS_PCLK_SAMPLE_FALLING) + flags ^= V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING; + } + + return flags; +} +EXPORT_SYMBOL(soc_camera_apply_board_flags); + +/** * soc_camera_apply_sensor_flags() - apply platform SOCAM_SENSOR_INVERT_* flags * @icl: camera platform parameters * @flags: flags to be inverted according to platform configuration -- cgit v1.1