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path: root/drivers/media/video/soc_mediabus.c
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Diffstat (limited to 'drivers/media/video/soc_mediabus.c')
-rw-r--r--drivers/media/video/soc_mediabus.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/media/video/soc_mediabus.c b/drivers/media/video/soc_mediabus.c
index bea7c9cf4f8..cf7f2194ded 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;