V4L/DVB (5304): Improve chip matching in v4l2_register
The chip matching in struct v4l2_register for VIDIOC_DBG_G/S_REGISTER
was rather primitive. It could not be extended to other busses besides
i2c and it lacked a way to.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 65a165f..e3ab047 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -1306,10 +1306,17 @@
*/
/* VIDIOC_DBG_G_REGISTER and VIDIOC_DBG_S_REGISTER */
+
+#define V4L2_CHIP_MATCH_ALWAYS 0 /* Match always (match_chip is not used) */
+#define V4L2_CHIP_MATCH_HOST 1 /* Match against chip ID on host (0 for the host) */
+#define V4L2_CHIP_MATCH_I2C_DRIVER 2 /* Match against I2C driver ID */
+#define V4L2_CHIP_MATCH_I2C_ADDR 3 /* Match against I2C 7-bit address */
+
struct v4l2_register {
+ __u32 match_type; /* Match type */
+ __u32 match_chip; /* Match this chip, meaning determined by match_type */
__u64 reg;
- __u32 i2c_id; /* I2C driver ID of the I2C chip, or 0 for the host */
- __u32 val;
+ __u64 val;
};
/*