[media] em28xx: introduce #defines for the image quality default settings

[cascardo/linux.git] / drivers / media / usb / em28xx / em28xx-reg.h

diff --git a/drivers/media/usb/em28xx/em28xx-reg.h b/drivers/media/usb/em28xx/em28xx-reg.h
index 885089e..8fd3c7f 100644 (file)
--- a/drivers/media/usb/em28xx/em28xx-reg.h
+++ b/drivers/media/usb/em28xx/em28xx-reg.h
@@ -120,12 +120,23 @@
 #define EM28XX_R1E_CWIDTH      0x1e
 #define EM28XX_R1F_CHEIGHT     0x1f
 
-#define EM28XX_R20_YGAIN       0x20
-#define EM28XX_R21_YOFFSET     0x21
-#define EM28XX_R22_UVGAIN      0x22
-#define EM28XX_R23_UOFFSET     0x23
-#define EM28XX_R24_VOFFSET     0x24
-#define EM28XX_R25_SHARPNESS   0x25
+#define EM28XX_R20_YGAIN       0x20 /* contrast [0:4]   */
+#define   CONTRAST_DEFAULT     0x10
+
+#define EM28XX_R21_YOFFSET     0x21 /* brightness       */     /* signed */
+#define   BRIGHTNESS_DEFAULT   0x00
+
+#define EM28XX_R22_UVGAIN      0x22 /* saturation [0:4] */
+#define   SATURATION_DEFAULT   0x10
+
+#define EM28XX_R23_UOFFSET     0x23 /* blue balance     */     /* signed */
+#define   BLUE_BALANCE_DEFAULT 0x00
+
+#define EM28XX_R24_VOFFSET     0x24 /* red balance      */     /* signed */
+#define   RED_BALANCE_DEFAULT  0x00
+
+#define EM28XX_R25_SHARPNESS   0x25 /* sharpness [0:4]  */
+#define   SHARPNESS_DEFAULT    0x00
 
 #define EM28XX_R26_COMPR       0x26
 #define EM28XX_R27_OUTFMT      0x27
@@ -152,6 +163,8 @@
 #define EM28XX_R31_HSCALEHIGH  0x31
 #define EM28XX_R32_VSCALELOW   0x32
 #define EM28XX_R33_VSCALEHIGH  0x33
+#define   EM28XX_HVSCALE_MAX   0x3fff /* => 20% */
+
 #define EM28XX_R34_VBI_START_H 0x34
 #define EM28XX_R35_VBI_START_V 0x35
 #define EM28XX_R36_VBI_WIDTH   0x36