V4L/DVB (5306): Add support for VIDIOC_G_CHIP_IDENT

VIDIOC_G_CHIP_IDENT improves debugging of card problems: it can be
used to detect which chips are on the board and based on that information
selected register dumps can be made, making it easy to debug complicated
media chips containing tens or hundreds of registers.
This ioctl replaces the internal VIDIOC_INT_G_CHIP_IDENT ioctl.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 2 insertions, 37 deletions

diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
index abb9ce9b21b8..181a40c46a52 100644
--- a/include/media/v4l2-common.h
+++ b/include/media/v4l2-common.h
@@ -98,6 +98,8 @@ u32 v4l2_ctrl_next(const u32 * const *ctrl_classes, u32 id);
 
 struct i2c_client; /* forward reference */
 int v4l2_chip_match_i2c_client(struct i2c_client *c, u32 id_type, u32 chip_id);
+int v4l2_chip_ident_i2c_client(struct i2c_client *c, struct v4l2_chip_ident *chip,
+                u32 ident, u32 revision);
 int v4l2_chip_match_host(u32 id_type, u32 chip_id);
 
 /* ------------------------------------------------------------------------- */
@@ -114,39 +116,6 @@ struct v4l2_decode_vbi_line {
         u32 type;               /* VBI service type (V4L2_SLICED_*). 0 if no service found */
 };
 
-/* VIDIOC_INT_G_CHIP_IDENT: identifies the actual chip installed on the board */
-enum v4l2_chip_ident {
-        /* general idents: reserved range 0-49 */
-        V4L2_IDENT_UNKNOWN = 0,
-
-        /* module saa7110: just ident= 100 */
-        V4L2_IDENT_SAA7110 = 100,
-
-        /* module saa7111: just ident= 101 */
-        V4L2_IDENT_SAA7111 = 101,
-
-        /* module saa7115: reserved range 102-149 */
-        V4L2_IDENT_SAA7113 = 103,
-        V4L2_IDENT_SAA7114 = 104,
-        V4L2_IDENT_SAA7115 = 105,
-        V4L2_IDENT_SAA7118 = 108,
-
-        /* module saa7127: reserved range 150-199 */
-        V4L2_IDENT_SAA7127 = 157,
-        V4L2_IDENT_SAA7129 = 159,
-
-        /* module cx25840: reserved range 200-249 */
-        V4L2_IDENT_CX25836 = 236,
-        V4L2_IDENT_CX25837 = 237,
-        V4L2_IDENT_CX25840 = 240,
-        V4L2_IDENT_CX25841 = 241,
-        V4L2_IDENT_CX25842 = 242,
-        V4L2_IDENT_CX25843 = 243,
-
-        /* OmniVision sensors - range 250-299 */
-        V4L2_IDENT_OV7670 = 250,
-};
-
 /* audio ioctls */
 
 /* v4l device was opened in Radio mode, to be replaced by VIDIOC_INT_S_TUNER_MODE */
@@ -208,10 +177,6 @@ enum v4l2_chip_ident {
    whether CC data from the first or second field should be obtained). */
 #define VIDIOC_INT_G_VBI_DATA           _IOWR('d', 106, struct v4l2_sliced_vbi_data)
 
-/* Returns the chip identifier or V4L2_IDENT_UNKNOWN if no identification can
-   be made. */
-#define VIDIOC_INT_G_CHIP_IDENT         _IOR ('d', 107, enum v4l2_chip_ident)
-
 /* Sets I2S speed in bps. This is used to provide a standard way to select I2S
    clock used by driving digital audio streams at some board designs.
    Usual values for the frequency are 1024000 and 2048000.