[media] gspca - ov534_9: Add brightness to OmniVision 5621 sensor

This patch adds brightness control to the OmniVision 5621 sensor.

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/ov534_9.c b/drivers/media/video/gspca/ov534_9.c
index fbfa02a..e6601b8 100644 (file)
--- a/drivers/media/video/gspca/ov534_9.c
+++ b/drivers/media/video/gspca/ov534_9.c
@@ -1107,16 +1107,34 @@ static void setbrightness(struct gspca_dev *gspca_dev)
 {
        struct sd *sd = (struct sd *) gspca_dev;
        u8 val;
+       s8 sval;
 
        if (gspca_dev->ctrl_dis & (1 << BRIGHTNESS))
                return;
-       val = sd->ctrls[BRIGHTNESS].val;
-       if (val < 8)
-               val = 15 - val;         /* f .. 8 */
-       else
-               val = val - 8;          /* 0 .. 7 */
-       sccb_write(gspca_dev, 0x55,     /* brtn - brightness adjustment */
-                       0x0f | (val << 4));
+       if (sd->sensor == SENSOR_OV562x) {
+               sval = sd->ctrls[BRIGHTNESS].val;
+               val = 0x76;
+               val += sval;
+               sccb_write(gspca_dev, 0x24, val);
+               val = 0x6a;
+               val += sval;
+               sccb_write(gspca_dev, 0x25, val);
+               if (sval < -40)
+                       val = 0x71;
+               else if (sval < 20)
+                       val = 0x94;
+               else
+                       val = 0xe6;
+               sccb_write(gspca_dev, 0x26, val);
+       } else {
+               val = sd->ctrls[BRIGHTNESS].val;
+               if (val < 8)
+                       val = 15 - val;         /* f .. 8 */
+               else
+                       val = val - 8;          /* 0 .. 7 */
+               sccb_write(gspca_dev, 0x55,     /* brtn - brightness adjustment */
+                               0x0f | (val << 4));
+       }
 }
 
 static void setcontrast(struct gspca_dev *gspca_dev)
@@ -1339,7 +1357,16 @@ static int sd_init(struct gspca_dev *gspca_dev)
                        reg_w(gspca_dev, 0x56, 0x17);
        } else if ((sensor_id & 0xfff0) == 0x5620) {
                sd->sensor = SENSOR_OV562x;
-
+               gspca_dev->ctrl_dis = (1 << CONTRAST) |
+                                       (1 << AUTOGAIN) |
+                                       (1 << EXPOSURE) |
+                                       (1 << SHARPNESS) |
+                                       (1 << SATUR) |
+                                       (1 << LIGHTFREQ);
+
+               sd->ctrls[BRIGHTNESS].min = -90;
+               sd->ctrls[BRIGHTNESS].max = 90;
+               sd->ctrls[BRIGHTNESS].def = 0;
                gspca_dev->cam.cam_mode = ov562x_mode;
                gspca_dev->cam.nmodes = ARRAY_SIZE(ov562x_mode);
 
@@ -1360,8 +1387,12 @@ static int sd_start(struct gspca_dev *gspca_dev)
 {
        struct sd *sd = (struct sd *) gspca_dev;
 
-       if (sd->sensor == SENSOR_OV971x || sd->sensor == SENSOR_OV562x)
+       if (sd->sensor == SENSOR_OV971x)
                return gspca_dev->usb_err;
+       else if (sd->sensor == SENSOR_OV562x) {
+               setbrightness(gspca_dev);
+               return gspca_dev->usb_err;
+       }
        switch (gspca_dev->curr_mode) {
        case QVGA_MODE:                 /* 320x240 */
                sccb_w_array(gspca_dev, ov965x_start_1_vga,