[PATCH 1/3] [media] gspca - ov534: Add Saturation control

[Antonio Ospite]

Signed-off-by: Antonio Ospite <osp...@studenti.unina.it>
---
 drivers/media/video/gspca/ov534.c |   31 ++++++++++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/drivers/media/video/gspca/ov534.c 
b/drivers/media/video/gspca/ov534.c
index 0475339..45139b5 100644
--- a/drivers/media/video/gspca/ov534.c
+++ b/drivers/media/video/gspca/ov534.c
@@ -53,6 +53,7 @@ MODULE_LICENSE("GPL");
 
 /* controls */
 enum e_ctrl {
+       SATURATION,
        BRIGHTNESS,
        CONTRAST,
        GAIN,
@@ -87,6 +88,7 @@ enum sensors {
 };
 
 /* V4L2 controls supported by the driver */
+static void setsaturation(struct gspca_dev *gspca_dev);
 static void setbrightness(struct gspca_dev *gspca_dev);
 static void setcontrast(struct gspca_dev *gspca_dev);
 static void setgain(struct gspca_dev *gspca_dev);
@@ -103,6 +105,18 @@ static int sd_start(struct gspca_dev *gspca_dev);
 static void sd_stopN(struct gspca_dev *gspca_dev);
 
 static const struct ctrl sd_ctrls[] = {
+[SATURATION] = {
+               {
+                       .id      = V4L2_CID_SATURATION,
+                       .type    = V4L2_CTRL_TYPE_INTEGER,
+                       .name    = "Saturation",
+                       .minimum = 0,
+                       .maximum = 255,
+                       .step    = 1,
+                       .default_value = 64,
+               },
+               .set_control = setsaturation
+       },
 [BRIGHTNESS] = {
                {
                        .id      = V4L2_CID_BRIGHTNESS,
@@ -684,7 +698,7 @@ static const u8 sensor_init_772x[][2] = {
        { 0x9c, 0x20 },
        { 0x9e, 0x81 },
 
-       { 0xa6, 0x04 },
+       { 0xa6, 0x06 },
        { 0x7e, 0x0c },
        { 0x7f, 0x16 },
        { 0x80, 0x2a },
@@ -955,6 +969,20 @@ static void set_frame_rate(struct gspca_dev *gspca_dev)
        PDEBUG(D_PROBE, "frame_rate: %d", r->fps);
 }
 
+static void setsaturation(struct gspca_dev *gspca_dev)
+{
+       struct sd *sd = (struct sd *) gspca_dev;
+       int val;
+
+       val = sd->ctrls[SATURATION].val;
+       if (sd->sensor == SENSOR_OV767x) {
+               /* TBD */
+       } else {
+               sccb_reg_write(gspca_dev, 0xa7, val); /* U saturation */
+               sccb_reg_write(gspca_dev, 0xa8, val); /* V saturation */
+       }
+}
+
 static void setbrightness(struct gspca_dev *gspca_dev)
 {
        struct sd *sd = (struct sd *) gspca_dev;
@@ -1309,6 +1337,7 @@ static int sd_start(struct gspca_dev *gspca_dev)
        if (!(gspca_dev->ctrl_dis & (1 << GAIN)))
                setgain(gspca_dev);
        setexposure(gspca_dev);
+       setsaturation(gspca_dev);
        setbrightness(gspca_dev);
        setcontrast(gspca_dev);
        if (!(gspca_dev->ctrl_dis & (1 << SHARPNESS)))
-- 
1.7.10

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