V4L/DVB (9837): gspca: Simplify the brightness/contrast for ov76xx sensors in sonixj.

Signed-off-by: Jean-Francois 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 df84bf9..34f7f58 100644 (file)
--- a/drivers/media/video/gspca/sonixj.c
+++ b/drivers/media/video/gspca/sonixj.c
@@ -1123,25 +1123,6 @@ static unsigned int setexposure(struct gspca_dev *gspca_dev,
        return expo;
 }
 
-/* this function is used for sensors o76xx only */
-static void setbrightcont(struct gspca_dev *gspca_dev)
-{
-       struct sd *sd = (struct sd *) gspca_dev;
-       int val;
-       __u8 reg84_full[0x15];
-
-       memcpy(reg84_full, reg84, sizeof reg84_full);
-       val = sd->contrast * 0x30 / CONTRAST_MAX + 0x10;        /* 10..40 */
-       reg84_full[0] = (val + 1) / 2;          /* red */
-       reg84_full[2] = val;                    /* green */
-       reg84_full[4] = (val + 1) / 5;          /* blue */
-       val = (sd->brightness - BRIGHTNESS_DEF) * 0x10
-                       / BRIGHTNESS_MAX;
-       reg84_full[0x12] = val & 0x1f;          /* 5:0 signed value */
-       reg_w(gspca_dev, 0x84, reg84_full, sizeof reg84_full);
-}
-
-/* sensor != ov76xx */
 static void setbrightness(struct gspca_dev *gspca_dev)
 {
        struct sd *sd = (struct sd *) gspca_dev;
@@ -1166,24 +1147,23 @@ static void setbrightness(struct gspca_dev *gspca_dev)
        case SENSOR_OM6802:
                expo = sd->brightness >> 6;
                sd->exposure = setexposure(gspca_dev, expo);
-               k2 = sd->brightness >> 11;
+               k2 >>= 1;
                break;
        }
 
-       reg_w1(gspca_dev, 0x96, k2);
+       reg_w1(gspca_dev, 0x96, k2);            /* color matrix Y offset */
 }
 
-/* sensor != ov76xx */
 static void setcontrast(struct gspca_dev *gspca_dev)
 {
        struct sd *sd = (struct sd *) gspca_dev;
        __u8 k2;
        __u8 contrast[] = { 0x00, 0x00, 0x28, 0x00, 0x07, 0x00 };
 
-       k2 = sd->contrast;
-       contrast[2] = k2;
-       contrast[0] = (k2 + 1) >> 1;
-       contrast[4] = (k2 + 1) / 5;
+       k2 = sd->contrast * 0x30 / (CONTRAST_MAX + 1) + 0x10;   /* 10..40 */
+       contrast[0] = (k2 + 1) / 2;             /* red */
+       contrast[2] = k2;                       /* green */
+       contrast[4] = (k2 + 1) / 5;             /* blue */
        reg_w(gspca_dev, 0x84, contrast, 6);
 }
 
@@ -1392,20 +1372,13 @@ static int sd_start(struct gspca_dev *gspca_dev)
        switch (sd->sensor) {
        case SENSOR_MI0360:
                setinfrared(sd);
-               /* fall thru */
-       case SENSOR_HV7131R:
-       case SENSOR_MO4000:
-       case SENSOR_OM6802:
-               setbrightness(gspca_dev);
-               setcontrast(gspca_dev);
                break;
        case SENSOR_OV7630:
                setvflip(sd);
-               /* fall thru */
-       default:                        /* OV76xx */
-               setbrightcont(gspca_dev);
                break;
        }
+       setbrightness(gspca_dev);
+       setcontrast(gspca_dev);
        setautogain(gspca_dev);
        return 0;
 }
@@ -1543,19 +1516,8 @@ static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
        struct sd *sd = (struct sd *) gspca_dev;
 
        sd->brightness = val;
-       if (gspca_dev->streaming) {
-               switch (sd->sensor) {
-               case SENSOR_HV7131R:
-               case SENSOR_MI0360:
-               case SENSOR_MO4000:
-               case SENSOR_OM6802:
-                       setbrightness(gspca_dev);
-                       break;
-               default:                        /* OV76xx */
-                       setbrightcont(gspca_dev);
-                       break;
-               }
-       }
+       if (gspca_dev->streaming)
+               setbrightness(gspca_dev);
        return 0;
 }
 
@@ -1572,19 +1534,8 @@ static int sd_setcontrast(struct gspca_dev *gspca_dev, __s32 val)
        struct sd *sd = (struct sd *) gspca_dev;
 
        sd->contrast = val;
-       if (gspca_dev->streaming) {
-               switch (sd->sensor) {
-               case SENSOR_HV7131R:
-               case SENSOR_MI0360:
-               case SENSOR_MO4000:
-               case SENSOR_OM6802:
-                       setcontrast(gspca_dev);
-                       break;
-               default:                        /* OV76xx */
-                       setbrightcont(gspca_dev);
-                       break;
-               }
-       }
+       if (gspca_dev->streaming)
+               setcontrast(gspca_dev);
        return 0;
 }