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path: root/drivers/media/video/gspca/ov534.c
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Diffstat (limited to 'drivers/media/video/gspca/ov534.c')
-rw-r--r--drivers/media/video/gspca/ov534.c146
1 files changed, 107 insertions, 39 deletions
diff --git a/drivers/media/video/gspca/ov534.c b/drivers/media/video/gspca/ov534.c
index 04753391de3e..b5acb1e4b4e7 100644
--- a/drivers/media/video/gspca/ov534.c
+++ b/drivers/media/video/gspca/ov534.c
@@ -34,6 +34,8 @@
#include "gspca.h"
+#include <linux/fixp-arith.h>
+
#define OV534_REG_ADDRESS 0xf1 /* sensor address */
#define OV534_REG_SUBADDR 0xf2
#define OV534_REG_WRITE 0xf3
@@ -53,6 +55,8 @@ MODULE_LICENSE("GPL");
/* controls */
enum e_ctrl {
+ HUE,
+ SATURATION,
BRIGHTNESS,
CONTRAST,
GAIN,
@@ -63,7 +67,6 @@ enum e_ctrl {
SHARPNESS,
HFLIP,
VFLIP,
- COLORS,
LIGHTFREQ,
NCTRLS /* number of controls */
};
@@ -87,6 +90,8 @@ enum sensors {
};
/* V4L2 controls supported by the driver */
+static void sethue(struct gspca_dev *gspca_dev);
+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);
@@ -96,13 +101,36 @@ static void setawb(struct gspca_dev *gspca_dev);
static void setaec(struct gspca_dev *gspca_dev);
static void setsharpness(struct gspca_dev *gspca_dev);
static void sethvflip(struct gspca_dev *gspca_dev);
-static void setcolors(struct gspca_dev *gspca_dev);
static void setlightfreq(struct gspca_dev *gspca_dev);
static int sd_start(struct gspca_dev *gspca_dev);
static void sd_stopN(struct gspca_dev *gspca_dev);
static const struct ctrl sd_ctrls[] = {
+[HUE] = {
+ {
+ .id = V4L2_CID_HUE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Hue",
+ .minimum = -90,
+ .maximum = 90,
+ .step = 1,
+ .default_value = 0,
+ },
+ .set_control = sethue
+ },
+[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,
@@ -223,18 +251,6 @@ static const struct ctrl sd_ctrls[] = {
},
.set_control = sethvflip
},
-[COLORS] = {
- {
- .id = V4L2_CID_SATURATION,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Saturation",
- .minimum = 0,
- .maximum = 6,
- .step = 1,
- .default_value = 3,
- },
- .set_control = setcolors
- },
[LIGHTFREQ] = {
{
.id = V4L2_CID_POWER_LINE_FREQUENCY,
@@ -684,7 +700,7 @@ static const u8 sensor_init_772x[][2] = {
{ 0x9c, 0x20 },
{ 0x9e, 0x81 },
- { 0xa6, 0x04 },
+ { 0xa6, 0x07 },
{ 0x7e, 0x0c },
{ 0x7f, 0x16 },
{ 0x80, 0x2a },
@@ -955,6 +971,74 @@ static void set_frame_rate(struct gspca_dev *gspca_dev)
PDEBUG(D_PROBE, "frame_rate: %d", r->fps);
}
+static void sethue(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ int val;
+
+ val = sd->ctrls[HUE].val;
+ if (sd->sensor == SENSOR_OV767x) {
+ /* TBD */
+ } else {
+ s16 huesin;
+ s16 huecos;
+
+ /* fixp_sin and fixp_cos accept only positive values, while
+ * our val is between -90 and 90
+ */
+ val += 360;
+
+ /* According to the datasheet the registers expect HUESIN and
+ * HUECOS to be the result of the trigonometric functions,
+ * scaled by 0x80.
+ *
+ * The 0x100 here represents the maximun absolute value
+ * returned byt fixp_sin and fixp_cos, so the scaling will
+ * consider the result like in the interval [-1.0, 1.0].
+ */
+ huesin = fixp_sin(val) * 0x80 / 0x100;
+ huecos = fixp_cos(val) * 0x80 / 0x100;
+
+ if (huesin < 0) {
+ sccb_reg_write(gspca_dev, 0xab,
+ sccb_reg_read(gspca_dev, 0xab) | 0x2);
+ huesin = -huesin;
+ } else {
+ sccb_reg_write(gspca_dev, 0xab,
+ sccb_reg_read(gspca_dev, 0xab) & ~0x2);
+
+ }
+ sccb_reg_write(gspca_dev, 0xa9, (u8)huecos);
+ sccb_reg_write(gspca_dev, 0xaa, (u8)huesin);
+ }
+}
+
+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) {
+ int i;
+ static u8 color_tb[][6] = {
+ {0x42, 0x42, 0x00, 0x11, 0x30, 0x41},
+ {0x52, 0x52, 0x00, 0x16, 0x3c, 0x52},
+ {0x66, 0x66, 0x00, 0x1b, 0x4b, 0x66},
+ {0x80, 0x80, 0x00, 0x22, 0x5e, 0x80},
+ {0x9a, 0x9a, 0x00, 0x29, 0x71, 0x9a},
+ {0xb8, 0xb8, 0x00, 0x31, 0x87, 0xb8},
+ {0xdd, 0xdd, 0x00, 0x3b, 0xa2, 0xdd},
+ };
+
+ for (i = 0; i < ARRAY_SIZE(color_tb[0]); i++)
+ sccb_reg_write(gspca_dev, 0x4f + i, color_tb[val][i]);
+ } 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;
@@ -1132,26 +1216,6 @@ static void sethvflip(struct gspca_dev *gspca_dev)
}
}
-static void setcolors(struct gspca_dev *gspca_dev)
-{
- struct sd *sd = (struct sd *) gspca_dev;
- u8 val;
- int i;
- static u8 color_tb[][6] = {
- {0x42, 0x42, 0x00, 0x11, 0x30, 0x41},
- {0x52, 0x52, 0x00, 0x16, 0x3c, 0x52},
- {0x66, 0x66, 0x00, 0x1b, 0x4b, 0x66},
- {0x80, 0x80, 0x00, 0x22, 0x5e, 0x80},
- {0x9a, 0x9a, 0x00, 0x29, 0x71, 0x9a},
- {0xb8, 0xb8, 0x00, 0x31, 0x87, 0xb8},
- {0xdd, 0xdd, 0x00, 0x3b, 0xa2, 0xdd},
- };
-
- val = sd->ctrls[COLORS].val;
- for (i = 0; i < ARRAY_SIZE(color_tb[0]); i++)
- sccb_reg_write(gspca_dev, 0x4f + i, color_tb[val][i]);
-}
-
static void setlightfreq(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
@@ -1225,9 +1289,13 @@ static int sd_init(struct gspca_dev *gspca_dev)
if ((sensor_id & 0xfff0) == 0x7670) {
sd->sensor = SENSOR_OV767x;
- gspca_dev->ctrl_dis = (1 << GAIN) |
+ gspca_dev->ctrl_dis = (1 << HUE) |
+ (1 << GAIN) |
(1 << AGC) |
(1 << SHARPNESS); /* auto */
+ sd->ctrls[SATURATION].min = 0,
+ sd->ctrls[SATURATION].max = 6,
+ sd->ctrls[SATURATION].def = 3,
sd->ctrls[BRIGHTNESS].min = -127;
sd->ctrls[BRIGHTNESS].max = 127;
sd->ctrls[BRIGHTNESS].def = 0;
@@ -1243,7 +1311,6 @@ static int sd_init(struct gspca_dev *gspca_dev)
gspca_dev->cam.nmodes = ARRAY_SIZE(ov767x_mode);
} else {
sd->sensor = SENSOR_OV772x;
- gspca_dev->ctrl_dis = (1 << COLORS);
gspca_dev->cam.bulk = 1;
gspca_dev->cam.bulk_size = 16384;
gspca_dev->cam.bulk_nurbs = 2;
@@ -1302,6 +1369,9 @@ static int sd_start(struct gspca_dev *gspca_dev)
set_frame_rate(gspca_dev);
+ if (!(gspca_dev->ctrl_dis & (1 << HUE)))
+ sethue(gspca_dev);
+ setsaturation(gspca_dev);
if (!(gspca_dev->ctrl_dis & (1 << AGC)))
setagc(gspca_dev);
setawb(gspca_dev);
@@ -1314,8 +1384,6 @@ static int sd_start(struct gspca_dev *gspca_dev)
if (!(gspca_dev->ctrl_dis & (1 << SHARPNESS)))
setsharpness(gspca_dev);
sethvflip(gspca_dev);
- if (!(gspca_dev->ctrl_dis & (1 << COLORS)))
- setcolors(gspca_dev);
setlightfreq(gspca_dev);
ov534_set_led(gspca_dev, 1);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.