V4L/DVB (9097): gspca: Adjust control values and restore compilation of sonixj.

- no compilation since last changeset
- brightness is a signed value
- better values of the color matrix

[mchehab@redhat.com: fix a merge conflict]
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 13 insertions, 14 deletions

diff --git a/drivers/media/video/gspca/sonixj.c b/drivers/media/video/gspca/sonixj.c
index 03fe77d38cc1..93b17340b7b1 100644
--- a/drivers/media/video/gspca/sonixj.c
+++ b/drivers/media/video/gspca/sonixj.c
@@ -267,10 +267,12 @@ static const __u8 gamma_def[] = {
         0xa6, 0xb2, 0xbf, 0xca, 0xd5, 0xe0, 0xeb, 0xf5, 0xff
 };
 
+/* color matrix and offsets */
 static const __u8 reg84[] = {
-        0x14, 0x00, 0x27, 0x00, 0x07, 0x00, 0xe5, 0x0f,
-        0xe4, 0x0f, 0x38, 0x00, 0x3e, 0x00, 0xc3, 0x0f,
-        0xf7, 0x0f, 0x00, 0x00, 0x00
+        0x14, 0x00, 0x27, 0x00, 0x07, 0x00,     /* YR YG YB gains */
+        0xe8, 0x0f, 0xda, 0x0f, 0x40, 0x00,     /* UR UG UB */
+        0x3e, 0x00, 0xcd, 0x0f, 0xf7, 0x0f,     /* VR VG VB */
+        0x00, 0x00, 0x00                        /* YUV offsets */
 };
 static const __u8 hv7131r_sensor_init[][8] = {
         {0xC1, 0x11, 0x01, 0x08, 0x01, 0x00, 0x00, 0x10},
@@ -1102,20 +1104,17 @@ static unsigned int setexposure(struct gspca_dev *gspca_dev,
 static void setbrightcont(struct gspca_dev *gspca_dev)
 {
         struct sd *sd = (struct sd *) gspca_dev;
-        unsigned val;
+        int val;
         __u8 reg84_full[0x15];
 
-        memset(reg84_full, 0, sizeof reg84_full);
-        val = sd->contrast * 0x20 / CONTRAST_MAX + 0x10;        /* 10..30 */
-        reg84_full[2] = val;
-        reg84_full[0] = (val + 1) / 2;
-        reg84_full[4] = (val + 1) / 5;
-        if (val > BRIGHTNESS_DEF)
-                val = (sd->brightness - BRIGHTNESS_DEF) * 0x20
+        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;
-        else
-                val = 0;
-        reg84_full[0x12] = val;                 /* 00..1f */
+        reg84_full[0x12] = val & 0x1f;          /* 5:0 signed value */
         reg_w(gspca_dev, 0x84, reg84_full, sizeof reg84_full);
 }