summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2011-07-26 11:38:01 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-11-03 18:27:13 -0200
commit32c69fcc785a2f8122c73d44ad160d9cfc4c9615 (patch)
treec5a15bcfb69436d9da99369b1bdec17999f89849
parent7cd74ffb04e05c115ebe53a59f83a73e677a2c63 (diff)
downloadop-kernel-dev-32c69fcc785a2f8122c73d44ad160d9cfc4c9615.zip
op-kernel-dev-32c69fcc785a2f8122c73d44ad160d9cfc4c9615.tar.gz
[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 <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--drivers/media/video/soc_camera.c34
-rw-r--r--drivers/media/video/soc_mediabus.c33
-rw-r--r--include/media/soc_camera.h6
-rw-r--r--include/media/soc_mediabus.h2
4 files changed, 73 insertions, 2 deletions
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
diff --git a/drivers/media/video/soc_mediabus.c b/drivers/media/video/soc_mediabus.c
index bea7c9c..cf7f219 100644
--- a/drivers/media/video/soc_mediabus.c
+++ b/drivers/media/video/soc_mediabus.c
@@ -383,6 +383,39 @@ const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc(
}
EXPORT_SYMBOL(soc_mbus_get_fmtdesc);
+unsigned int soc_mbus_config_compatible(const struct v4l2_mbus_config *cfg,
+ unsigned int flags)
+{
+ unsigned long common_flags;
+ bool hsync = true, vsync = true, pclk, data, mode;
+ bool mipi_lanes, mipi_clock;
+
+ common_flags = cfg->flags & flags;
+
+ switch (cfg->type) {
+ case V4L2_MBUS_PARALLEL:
+ hsync = common_flags & (V4L2_MBUS_HSYNC_ACTIVE_HIGH |
+ V4L2_MBUS_HSYNC_ACTIVE_LOW);
+ vsync = common_flags & (V4L2_MBUS_VSYNC_ACTIVE_HIGH |
+ V4L2_MBUS_VSYNC_ACTIVE_LOW);
+ case V4L2_MBUS_BT656:
+ pclk = common_flags & (V4L2_MBUS_PCLK_SAMPLE_RISING |
+ V4L2_MBUS_PCLK_SAMPLE_FALLING);
+ data = common_flags & (V4L2_MBUS_DATA_ACTIVE_HIGH |
+ V4L2_MBUS_DATA_ACTIVE_LOW);
+ mode = common_flags & (V4L2_MBUS_MASTER | V4L2_MBUS_SLAVE);
+ return (!hsync || !vsync || !pclk || !data || !mode) ?
+ 0 : common_flags;
+ case V4L2_MBUS_CSI2:
+ mipi_lanes = common_flags & V4L2_MBUS_CSI2_LANES;
+ mipi_clock = common_flags & (V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK |
+ V4L2_MBUS_CSI2_CONTINUOUS_CLOCK);
+ return (!mipi_lanes || !mipi_clock) ? 0 : common_flags;
+ }
+ return 0;
+}
+EXPORT_SYMBOL(soc_mbus_config_compatible);
+
static int __init soc_mbus_init(void)
{
return 0;
diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h
index 7582952..936a504 100644
--- a/include/media/soc_camera.h
+++ b/include/media/soc_camera.h
@@ -300,8 +300,10 @@ static inline void soc_camera_limit_side(int *start, int *length,
*start = start_min + length_max - *length;
}
-extern unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl,
- unsigned long flags);
+unsigned long soc_camera_apply_sensor_flags(struct soc_camera_link *icl,
+ unsigned long flags);
+unsigned long soc_camera_apply_board_flags(struct soc_camera_link *icl,
+ const struct v4l2_mbus_config *cfg);
/* This is only temporary here - until v4l2-subdev begins to link to video_device */
#include <linux/i2c.h>
diff --git a/include/media/soc_mediabus.h b/include/media/soc_mediabus.h
index fae4325..73f1e7e 100644
--- a/include/media/soc_mediabus.h
+++ b/include/media/soc_mediabus.h
@@ -82,5 +82,7 @@ const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc(
s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf);
int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf,
unsigned int *numerator, unsigned int *denominator);
+unsigned int soc_mbus_config_compatible(const struct v4l2_mbus_config *cfg,
+ unsigned int flags);
#endif
OpenPOWER on IntegriCloud