V4L/DVB (6217): V4L: Int if: Add BT.656 interface support

This patch adds BT.656 interface settings for [gs]_ifparm.

Signed-off-by: Sakari Ailus <sakari.ailus@nokia.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 50 insertions, 0 deletions

diff --git a/include/media/v4l2-int-device.h b/include/media/v4l2-int-device.h
index 861978deb3bf..4e07707bd5ea 100644
--- a/include/media/v4l2-int-device.h
+++ b/include/media/v4l2-int-device.h
@@ -99,11 +99,61 @@ int v4l2_int_ioctl_1(struct v4l2_int_device *d, int cmd, void *arg);
 
 /* Slave interface type. */
 enum v4l2_if_type {
+        /*
+         * Parallel 8-, 10- or 12-bit interface, used by for example
+         * on certain image sensors.
+         */
+        V4L2_IF_TYPE_BT656,
+};
+
+enum v4l2_if_type_bt656_mode {
+        /*
+         * Modes without Bt synchronisation codes. Separate
+         * synchronisation signal lines are used.
+         */
+        V4L2_IF_TYPE_BT656_MODE_NOBT_8BIT,
+        V4L2_IF_TYPE_BT656_MODE_NOBT_10BIT,
+        V4L2_IF_TYPE_BT656_MODE_NOBT_12BIT,
+        /*
+         * Use Bt synchronisation codes. The vertical and horizontal
+         * synchronisation is done based on synchronisation codes.
+         */
+        V4L2_IF_TYPE_BT656_MODE_BT_8BIT,
+        V4L2_IF_TYPE_BT656_MODE_BT_10BIT,
+};
+
+struct v4l2_if_type_bt656 {
+        /*
+         * 0: Frame begins when vsync is high.
+         * 1: Frame begins when vsync changes from low to high.
+         */
+        unsigned frame_start_on_rising_vs:1;
+        /* Use Bt synchronisation codes for sync correction. */
+        unsigned bt_sync_correct:1;
+        /* Swap every two adjacent image data elements. */
+        unsigned swap:1;
+        /* Inverted latch clock polarity from slave. */
+        unsigned latch_clk_inv:1;
+        /* Hs polarity. 0 is active high, 1 active low. */
+        unsigned nobt_hs_inv:1;
+        /* Vs polarity. 0 is active high, 1 active low. */
+        unsigned nobt_vs_inv:1;
+        enum v4l2_if_type_bt656_mode mode;
+        /* Minimum accepted bus clock for slave (in Hz). */
+        u32 clock_min;
+        /* Maximum accepted bus clock for slave. */
+        u32 clock_max;
+        /*
+         * Current wish of the slave. May only change in response to
+         * ioctls that affect image capture.
+         */
+        u32 clock_curr;
 };
 
 struct v4l2_ifparm {
         enum v4l2_if_type if_type;
         union {
+                struct v4l2_if_type_bt656 bt656;
         } u;
 };