V4L/DVB: gspca - sonixj: Add autogain for sensor gc0307

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/gspca/sonixj.c b/drivers/media/video/gspca/sonixj.c
index 0b74ea8..d90c065 100644 (file)
--- a/drivers/media/video/gspca/sonixj.c
+++ b/drivers/media/video/gspca/sonixj.c
@@ -291,8 +291,7 @@ static const __u32 ctrl_dis[] = {
                        (1 << VFLIP_IDX) |
                        (1 << FREQ_IDX),
 
-[SENSOR_GC0307] =      (1 << AUTOGAIN_IDX) |
-                       (1 << INFRARED_IDX) |
+[SENSOR_GC0307] =      (1 << INFRARED_IDX) |
                        (1 << VFLIP_IDX) |
                        (1 << FREQ_IDX),
 
@@ -642,12 +641,6 @@ static const u8 gc0307_sensor_param1[][8] = {
 /*param3*/
        {0xa0, 0x21, 0x01, 0x6e, 0x00, 0x00, 0x00, 0x10},
        {0xa0, 0x21, 0x02, 0x88, 0x00, 0x00, 0x00, 0x10},
-
-       {0xa0, 0x21, 0x68, 0x22, 0x00, 0x00, 0x00, 0x10},
-       {0xdd, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
-       {0xa0, 0x21, 0x03, 0x07, 0x00, 0x00, 0x00, 0x10},
-       {0xdd, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
-       {0xa0, 0x21, 0x04, 0x91, 0x00, 0x00, 0x00, 0x10},
        {}
 };
 
@@ -1815,6 +1808,18 @@ static u32 setexposure(struct gspca_dev *gspca_dev,
        struct sd *sd = (struct sd *) gspca_dev;
 
        switch (sd->sensor) {
+       case SENSOR_GC0307: {
+               int a, b;
+
+               /* expo = 0..255 -> a = 19..43 */
+               a = 19 + expo * 25 / 256;
+               i2c_w1(gspca_dev, 0x68, a);
+               a -= 12;
+               b = a * a * 4;                  /* heuristic */
+               i2c_w1(gspca_dev, 0x03, b >> 8);
+               i2c_w1(gspca_dev, 0x04, b);
+               break;
+           }
        case SENSOR_HV7131R: {
                u8 Expodoit[] =
                        { 0xc1, 0x11, 0x25, 0x00, 0x00, 0x00, 0x00, 0x16 };
@@ -1925,6 +1930,7 @@ static void setbrightness(struct gspca_dev *gspca_dev)
                expo = sd->brightness >> 4;
                sd->exposure = setexposure(gspca_dev, expo);
                break;
+       case SENSOR_GC0307:
        case SENSOR_MT9V111:
                expo = sd->brightness >> 8;
                sd->exposure = setexposure(gspca_dev, expo);
@@ -2524,6 +2530,14 @@ static void do_autogain(struct gspca_dev *gspca_dev)
        if (delta < luma_mean - luma_delta ||
            delta > luma_mean + luma_delta) {
                switch (sd->sensor) {
+               case SENSOR_GC0307:
+                       expotimes = sd->exposure;
+                       expotimes += (luma_mean - delta) >> 6;
+                       if (expotimes < 0)
+                               expotimes = 0;
+                       sd->exposure = setexposure(gspca_dev,
+                                                  (unsigned int) expotimes);
+                       break;
                case SENSOR_HV7131R:
                        expotimes = sd->exposure >> 8;
                        expotimes += (luma_mean - delta) >> 4;