V4L/DVB (8812): gspca: Do pac73xx webcams work.

- documentation for some registers
- some preparations for adding autogain_n_exposure functionality
- various pac7311 fixes
- disable brightness and colors controls for 7311
- fix contrast control for 7311
- add hflip and vflip controls for 7311
- minimal jpeg header
- proper SOF detection

Signed-off-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 5 insertions, 31 deletions

diff --git a/drivers/media/video/gspca/pac207.c b/drivers/media/video/gspca/pac207.c
index d9668f4cb4d1..620c9631629e 100644
--- a/drivers/media/video/gspca/pac207.c
+++ b/drivers/media/video/gspca/pac207.c
@@ -181,9 +181,6 @@ static const __u8 pac207_sensor_init[][8] = {
                         /* 48 reg_72 Rate Control end BalSize_4a =0x36 */
 static const __u8 PacReg72[] = { 0x00, 0x00, 0x36, 0x00 };
 
-static const unsigned char pac207_sof_marker[5] =
-                { 0xff, 0xff, 0x00, 0xff, 0x96 };
-
 static int pac207_write_regs(struct gspca_dev *gspca_dev, u16 index,
         const u8 *buffer, u16 length)
 {
@@ -367,31 +364,8 @@ static void pac207_do_auto_gain(struct gspca_dev *gspca_dev)
                 sd->autogain_ignore_frames = PAC207_AUTOGAIN_IGNORE_FRAMES;
 }
 
-static unsigned char *pac207_find_sof(struct gspca_dev *gspca_dev,
-                                        unsigned char *m, int len)
-{
-        struct sd *sd = (struct sd *) gspca_dev;
-        int i;
-
-        /* Search for the SOF marker (fixed part) in the header */
-        for (i = 0; i < len; i++) {
-                if (m[i] == pac207_sof_marker[sd->sof_read]) {
-                        sd->sof_read++;
-                        if (sd->sof_read == sizeof(pac207_sof_marker)) {
-                                PDEBUG(D_STREAM,
-                                        "SOF found, bytes to analyze: %u."
-                                        " Frame starts at byte #%u",
-                                        len, i + 1);
-                                sd->sof_read = 0;
-                                return m + i + 1;
-                        }
-                } else {
-                        sd->sof_read = 0;
-                }
-        }
-
-        return NULL;
-}
+/* Include pac common sof detection functions */
+#include "pac_common.h"
 
 static void sd_pkt_scan(struct gspca_dev *gspca_dev,
                         struct gspca_frame *frame,
@@ -401,14 +375,14 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
         struct sd *sd = (struct sd *) gspca_dev;
         unsigned char *sof;
 
-        sof = pac207_find_sof(gspca_dev, data, len);
+        sof = pac_find_sof(gspca_dev, data, len);
         if (sof) {
                 int n;
 
                 /* finish decoding current frame */
                 n = sof - data;
-                if (n > sizeof pac207_sof_marker)
-                        n -= sizeof pac207_sof_marker;
+                if (n > sizeof pac_sof_marker)
+                        n -= sizeof pac_sof_marker;
                 else
                         n = 0;
                 frame = gspca_frame_add(gspca_dev, LAST_PACKET, frame,