[PATCH 3/3] gspca_gl860

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gspca - gl860: add flip/mirror for OV2640

From: Olivier Lorin <o.lorin@xxxxxxxxxxx>

- add flip/mirror support for OV2640
- fix for backlight value range
- fix for red-blue inversion hue mode with V4L1 applications

diff -rupN ../gspca-msrc2/linux/drivers/media/video/gspca/gl860/gl860.h ./linux/drivers/media/video/gspca/gl860/gl860.h --- ../gspca-msrc2/linux/drivers/media/video/gspca/gl860/gl860.h 2009-09-24 23:16:10.000000000 +0200 +++ ./linux/drivers/media/video/gspca/gl860/gl860.h 2009-09-24 23:55:32.000000000 +0200
@@ -23,7 +23,7 @@
#include "gspca.h"

#define MODULE_NAME "gspca_gl860"
-#define DRIVER_VERSION "0.9d11"
+#define DRIVER_VERSION "0.9e"

#define ctrl_in  gl860_RTx
#define ctrl_out gl860_RTx
diff -rupN ../gspca-msrc2/linux/drivers/media/video/gspca/gl860/gl860-ov2640.c ./linux/drivers/media/video/gspca/gl860/gl860-ov2640.c --- ../gspca-msrc2/linux/drivers/media/video/gspca/gl860/gl860-ov2640.c 2009-09-24 23:34:57.000000000 +0200 +++ ./linux/drivers/media/video/gspca/gl860/gl860-ov2640.c 2009-09-30 00:40:49.000000000 +0200
@@ -107,36 +107,6 @@ static struct validx tbl_sensor_settings
    {0x6001, 0x00ff}, {0x6038, 0x000c},
    {10, 0xffff},
    {0x6000, 0x0011},
-    /* backlight=31/64 */
-    {0x6001, 0x00ff}, {0x603e, 0x0024}, {0x6034, 0x0025},
-    /* bright=0/256 */
-    {0x6000, 0x00ff}, {0x6009, 0x007c}, {0x6000, 0x007d},
-    /* wbal=64/128 */
-    {0x6000, 0x00ff}, {0x6003, 0x007c}, {0x6040, 0x007d},
-    /* cntr=0/256 */
-    {0x6000, 0x00ff}, {0x6007, 0x007c}, {0x6000, 0x007d},
-    /* sat=128/256 */
-    {0x6000, 0x00ff}, {0x6001, 0x007c}, {0x6080, 0x007d},
-    /* sharpness=0/32 */
-    {0x6000, 0x00ff}, {0x6001, 0x0092}, {0x60c0, 0x0093},
-    /* hue=0/256 */
-    {0x6000, 0x00ff}, {0x6002, 0x007c}, {0x6000, 0x007d},
-    /* gam=32/64 */
-    {0x6000, 0x00ff}, {0x6008, 0x007c}, {0x6020, 0x007d},
-    /* image right up */
-    {0xffff, 0xffff},
-    {15, 0xffff},
-    {0x6001, 0x00ff}, {0x6000, 0x8004},
-    {0xffff, 0xffff},
-    {0x60a8, 0x0004},
-    {15, 0xffff},
-    {0x6001, 0x00ff}, {0x6000, 0x8004},
-    {0xffff, 0xffff},
-    {0x60f8, 0x0004},
-    /* image right up */
-    {0xffff, 0xffff},
-    /* backlight=31/64 */
-    {0x6001, 0x00ff}, {0x603e, 0x0024}, {0x6034, 0x0025},
};

static struct validx tbl_640[] = {
@@ -222,17 +192,19 @@ void ov2640_init_settings(struct gspca_d
    sd->vcur.hue        =   0;
    sd->vcur.saturation = 128;
    sd->vcur.whitebal   =  64;
+    sd->vcur.mirror     =   0;
+    sd->vcur.flip       =   0;

    sd->vmax.backlight  =  64;
    sd->vmax.brightness = 255;
    sd->vmax.sharpness  =  31;
    sd->vmax.contrast   = 255;
    sd->vmax.gamma      =  64;
-    sd->vmax.hue        = 255 + 1;
+    sd->vmax.hue        = 254 + 2;
    sd->vmax.saturation = 255;
    sd->vmax.whitebal   = 128;
-    sd->vmax.mirror     = 0;
-    sd->vmax.flip       = 0;
+    sd->vmax.mirror     = 1;
+    sd->vmax.flip       = 1;
    sd->vmax.AC50Hz     = 0;

    sd->dev_camera_settings = ov2640_camera_settings;
@@ -284,6 +256,8 @@ static int ov2640_init_pre_alt(struct gs
    sd->vold.gamma    = -1;
    sd->vold.hue      = -1;
    sd->vold.whitebal = -1;
+    sd->vold.mirror = -1;
+    sd->vold.flip   = -1;

    ov2640_init_post_alt(gspca_dev);

@@ -346,18 +320,6 @@ static int ov2640_init_post_alt(struct g

    n = fetch_validx(gspca_dev, tbl_sensor_settings_common2,
            ARRAY_SIZE(tbl_sensor_settings_common2));
-    ctrl_in(gspca_dev, 0xc0, 2, 0x0000, 0x0000, 1, c50);
-    keep_on_fetching_validx(gspca_dev, tbl_sensor_settings_common2,
-                ARRAY_SIZE(tbl_sensor_settings_common2), n);
-    ctrl_in(gspca_dev, 0xc0, 2, 0x6000, 0x8004, 1, c28);
-    keep_on_fetching_validx(gspca_dev, tbl_sensor_settings_common2,
-                ARRAY_SIZE(tbl_sensor_settings_common2), n);
-    ctrl_in(gspca_dev, 0xc0, 2, 0x6000, 0x8004, 1, ca8);
-    keep_on_fetching_validx(gspca_dev, tbl_sensor_settings_common2,
-                ARRAY_SIZE(tbl_sensor_settings_common2), n);
-    ctrl_in(gspca_dev, 0xc0, 2, 0x0000, 0x0000, 1, c50);
-    keep_on_fetching_validx(gspca_dev, tbl_sensor_settings_common2,
-                ARRAY_SIZE(tbl_sensor_settings_common2), n);

    ov2640_camera_settings(gspca_dev);

@@ -394,6 +356,8 @@ static int ov2640_camera_settings(struct
    s32 sat    = sd->vcur.saturation;
    s32 hue    = sd->vcur.hue;
    s32 wbal   = sd->vcur.whitebal;
+    s32 mirror = (((sd->vcur.mirror > 0) ^ sd->mirrorMask) == 0);
+    s32 flip   = (((sd->vcur.flip   > 0) ^ sd->mirrorMask) == 0);

    if (backlight != sd->vold.backlight) {
        /* No sd->vold.backlight=backlight; (to be done again later) */
@@ -402,9 +366,9 @@ static int ov2640_camera_settings(struct

        ctrl_out(gspca_dev, 0x40, 1, 0x6001                 , 0x00ff,
                0, NULL);
-        ctrl_out(gspca_dev, 0x40, 1, 0x601f + backlight     , 0x0024,
+        ctrl_out(gspca_dev, 0x40, 1, 0x601e + backlight     , 0x0024,
                0, NULL);
-        ctrl_out(gspca_dev, 0x40, 1, 0x601f + backlight - 10, 0x0025,
+        ctrl_out(gspca_dev, 0x40, 1, 0x601e + backlight - 10, 0x0025,
                0, NULL);
    }

@@ -467,7 +431,7 @@ static int ov2640_camera_settings(struct
        ctrl_out(gspca_dev, 0x40, 1, 0x6002     , 0x007c, 0, NULL);
        ctrl_out(gspca_dev, 0x40, 1, 0x6000 + hue * (hue < 255), 0x007d,
                0, NULL);
-        if (hue >= sd->vmax.hue)
+        if (hue >= 255)
            sd->swapRB = 1;
        else
            sd->swapRB = 0;
@@ -483,14 +447,33 @@ static int ov2640_camera_settings(struct
        ctrl_out(gspca_dev, 0x40, 1, 0x6000 + gam, 0x007d, 0, NULL);
    }

+    if (mirror != sd->vold.mirror || flip != sd->vold.flip) {
+        sd->vold.mirror = mirror;
+        sd->vold.flip   = flip;
+
+        mirror = 0x80 * mirror;
+        ctrl_out(gspca_dev, 0x40, 1, 0x6001, 0x00ff, 0, NULL);
+        ctrl_out(gspca_dev, 0x40, 1, 0x6000, 0x8004, 0, NULL);
+        ctrl_in(gspca_dev, 0xc0, 2, 0x6000, 0x8004, 1, &c28);
+        ctrl_out(gspca_dev, 0x40, 1, 0x6028 + mirror, 0x0004, 0, NULL);
+
+        flip = 0x50 * flip + mirror;
+        ctrl_out(gspca_dev, 0x40, 1, 0x6001, 0x00ff, 0, NULL);
+        ctrl_out(gspca_dev, 0x40, 1, 0x6000, 0x8004, 0, NULL);
+        ctrl_in(gspca_dev, 0xc0, 2, 0x6000, 0x8004, 1, &ca8);
+        ctrl_out(gspca_dev, 0x40, 1, 0x6028 + flip, 0x0004, 0, NULL);
+
+        ctrl_in(gspca_dev, 0xc0, 2, 0x0000, 0x0000, 1, &c50);
+    }
+
    if (backlight != sd->vold.backlight) {
        sd->vold.backlight = backlight;

        ctrl_out(gspca_dev, 0x40, 1, 0x6001                 , 0x00ff,
                0, NULL);
-        ctrl_out(gspca_dev, 0x40, 1, 0x601f + backlight     , 0x0024,
+        ctrl_out(gspca_dev, 0x40, 1, 0x601e + backlight     , 0x0024,
                0, NULL);
-        ctrl_out(gspca_dev, 0x40, 1, 0x601f + backlight - 10, 0x0025,
+        ctrl_out(gspca_dev, 0x40, 1, 0x601e + backlight - 10, 0x0025,
                0, NULL);
    }

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