aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/gspca/tv8532.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/gspca/tv8532.c')
-rw-r--r--drivers/media/video/gspca/tv8532.c227
1 files changed, 78 insertions, 149 deletions
diff --git a/drivers/media/video/gspca/tv8532.c b/drivers/media/video/gspca/tv8532.c
index c7b6eb1e04d5..d9c5bf3449d4 100644
--- a/drivers/media/video/gspca/tv8532.c
+++ b/drivers/media/video/gspca/tv8532.c
@@ -30,29 +30,46 @@ MODULE_LICENSE("GPL");
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
- __u16 brightness;
+ __u16 exposure;
+ __u16 gain;
__u8 packet;
};
/* V4L2 controls supported by the driver */
-static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
-static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
+static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
+static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
static const struct ctrl sd_ctrls[] = {
{
{
- .id = V4L2_CID_BRIGHTNESS,
+ .id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Brightness",
+ .name = "Exposure",
.minimum = 1,
- .maximum = 0x15f, /* = 352 - 1 */
+ .maximum = 0x18f,
.step = 1,
-#define BRIGHTNESS_DEF 0x14c
- .default_value = BRIGHTNESS_DEF,
+#define EXPOSURE_DEF 0x18f
+ .default_value = EXPOSURE_DEF,
},
- .set = sd_setbrightness,
- .get = sd_getbrightness,
+ .set = sd_setexposure,
+ .get = sd_getexposure,
+ },
+ {
+ {
+ .id = V4L2_CID_GAIN,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Gain",
+ .minimum = 0,
+ .maximum = 0x7ff,
+ .step = 1,
+#define GAIN_DEF 0x100
+ .default_value = GAIN_DEF,
+ },
+ .set = sd_setgain,
+ .get = sd_getgain,
},
};
@@ -92,6 +109,14 @@ static const struct v4l2_pix_format sif_mode[] = {
#define R14_AD_ROW_BEGINL 0x14
#define R15_AD_ROWBEGINH 0x15
#define R1C_AD_EXPOSE_TIMEL 0x1c
+#define R20_GAIN_G1L 0x20
+#define R21_GAIN_G1H 0x21
+#define R22_GAIN_RL 0x22
+#define R23_GAIN_RH 0x23
+#define R24_GAIN_BL 0x24
+#define R25_GAIN_BH 0x25
+#define R26_GAIN_G2L 0x26
+#define R27_GAIN_G2H 0x27
#define R28_QUANT 0x28
#define R29_LINE 0x29
#define R2C_POLARITY 0x2c
@@ -129,18 +154,6 @@ static const u8 eeprom_data[][3] = {
{0x05, 0x09, 0xf1},
};
-static int reg_r(struct gspca_dev *gspca_dev,
- __u16 index)
-{
- usb_control_msg(gspca_dev->dev,
- usb_rcvctrlpipe(gspca_dev->dev, 0),
- 0x03,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- 0, /* value */
- index, gspca_dev->usb_buf, 1,
- 500);
- return gspca_dev->usb_buf[0];
-}
/* write 1 byte */
static void reg_w1(struct gspca_dev *gspca_dev,
@@ -183,7 +196,6 @@ static void tv_8532WriteEEprom(struct gspca_dev *gspca_dev)
}
reg_w1(gspca_dev, R07_TABLE_LEN, i);
reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Close);
- msleep(10);
}
/* this function is called at probe time */
@@ -197,53 +209,13 @@ static int sd_config(struct gspca_dev *gspca_dev,
cam->cam_mode = sif_mode;
cam->nmodes = ARRAY_SIZE(sif_mode);
- sd->brightness = BRIGHTNESS_DEF;
+ sd->exposure = EXPOSURE_DEF;
+ sd->gain = GAIN_DEF;
return 0;
}
-static void tv_8532ReadRegisters(struct gspca_dev *gspca_dev)
-{
- int i;
- static u8 reg_tb[] = {
- R0C_AD_WIDTHL,
- R0D_AD_WIDTHH,
- R28_QUANT,
- R29_LINE,
- R2C_POLARITY,
- R2D_POINT,
- R2E_POINTH,
- R2F_POINTB,
- R30_POINTBH,
- R2A_HIGH_BUDGET,
- R2B_LOW_BUDGET,
- R34_VID,
- R35_VIDH,
- R36_PID,
- R37_PIDH,
- R83_AD_IDH,
- R10_AD_COL_BEGINL,
- R11_AD_COL_BEGINH,
- R14_AD_ROW_BEGINL,
- R15_AD_ROWBEGINH,
- 0
- };
-
- i = 0;
- do {
- reg_r(gspca_dev, reg_tb[i]);
- i++;
- } while (reg_tb[i] != 0);
-}
-
static void tv_8532_setReg(struct gspca_dev *gspca_dev)
{
- reg_w1(gspca_dev, R10_AD_COL_BEGINL, 0x44);
- /* begin active line */
- reg_w1(gspca_dev, R11_AD_COL_BEGINH, 0x00);
- /* mirror and digital gain */
- reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
- /* = 0x84 */
-
reg_w1(gspca_dev, R3B_Test3, 0x0a); /* Test0Sel = 10 */
/******************************************************/
reg_w1(gspca_dev, R0E_AD_HEIGHTL, 0x90);
@@ -255,100 +227,43 @@ static void tv_8532_setReg(struct gspca_dev *gspca_dev)
/* mirror and digital gain */
reg_w1(gspca_dev, R14_AD_ROW_BEGINL, 0x0a);
- reg_w1(gspca_dev, R91_AD_SLOPEREG, 0x00);
reg_w1(gspca_dev, R94_AD_BITCONTROL, 0x02);
-
- reg_w1(gspca_dev, R01_TIMING_CONTROL_LOW, CMD_EEprom_Close);
-
reg_w1(gspca_dev, R91_AD_SLOPEREG, 0x00);
reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
/* = 0x84 */
}
-static void tv_8532_PollReg(struct gspca_dev *gspca_dev)
-{
- int i;
-
- /* strange polling from tgc */
- for (i = 0; i < 10; i++) {
- reg_w1(gspca_dev, R2C_POLARITY, 0x10);
- reg_w1(gspca_dev, R00_PART_CONTROL,
- LATENT_CHANGE | EXPO_CHANGE);
- reg_w1(gspca_dev, R31_UPD, 0x01);
- }
-}
-
/* this function is called at probe and resume time */
static int sd_init(struct gspca_dev *gspca_dev)
{
tv_8532WriteEEprom(gspca_dev);
- reg_w1(gspca_dev, R91_AD_SLOPEREG, 0x32); /* slope begin 1,7V,
- * slope rate 2 */
- reg_w1(gspca_dev, R94_AD_BITCONTROL, 0x00);
- tv_8532ReadRegisters(gspca_dev);
- reg_w1(gspca_dev, R3B_Test3, 0x0b);
- reg_w2(gspca_dev, R0E_AD_HEIGHTL, 0x0190);
- reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, 0x018f);
- reg_w1(gspca_dev, R0C_AD_WIDTHL, 0xe8);
- reg_w1(gspca_dev, R0D_AD_WIDTHH, 0x03);
-
- /*******************************************************************/
- reg_w1(gspca_dev, R28_QUANT, 0x90);
- /* no compress - fixed Q - quant 0 */
- reg_w1(gspca_dev, R29_LINE, 0x81);
- /* 0x84; // CIF | 4 packet 0x29 */
-
- /************************************************/
- reg_w1(gspca_dev, R2C_POLARITY, 0x10);
- /* 0x48; //0x08; 0x2c */
- reg_w1(gspca_dev, R2D_POINT, 0x14);
- /* 0x38; 0x2d */
- reg_w1(gspca_dev, R2E_POINTH, 0x01);
- /* 0x04; 0x2e */
- reg_w1(gspca_dev, R2F_POINTB, 0x12);
- /* 0x04; 0x2f */
- reg_w1(gspca_dev, R30_POINTBH, 0x01);
- /* 0x04; 0x30 */
- reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
- /* 0x00<-0x84 */
- /*************************************************/
- reg_w1(gspca_dev, R31_UPD, 0x01); /* update registers */
- msleep(200);
- reg_w1(gspca_dev, R31_UPD, 0x00); /* end update */
- /*************************************************/
- tv_8532_setReg(gspca_dev);
- /*************************************************/
- reg_w1(gspca_dev, R3B_Test3, 0x0b); /* Test0Sel = 11 = GPIO */
- /*************************************************/
- tv_8532_setReg(gspca_dev);
- /*************************************************/
- tv_8532_PollReg(gspca_dev);
return 0;
}
-static void setbrightness(struct gspca_dev *gspca_dev)
+static void setexposure(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
- reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, sd->brightness);
+ reg_w2(gspca_dev, R1C_AD_EXPOSE_TIMEL, sd->exposure);
reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
/* 0x84 */
}
-/* -- start the camera -- */
-static int sd_start(struct gspca_dev *gspca_dev)
+static void setgain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
- reg_w1(gspca_dev, R91_AD_SLOPEREG, 0x32); /* slope begin 1,7V,
- * slope rate 2 */
- reg_w1(gspca_dev, R94_AD_BITCONTROL, 0x00);
- tv_8532ReadRegisters(gspca_dev);
- reg_w1(gspca_dev, R3B_Test3, 0x0b);
+ reg_w2(gspca_dev, R20_GAIN_G1L, sd->gain);
+ reg_w2(gspca_dev, R22_GAIN_RL, sd->gain);
+ reg_w2(gspca_dev, R24_GAIN_BL, sd->gain);
+ reg_w2(gspca_dev, R26_GAIN_G2L, sd->gain);
+}
- reg_w2(gspca_dev, R0E_AD_HEIGHTL, 0x0190);
- setbrightness(gspca_dev);
+/* -- start the camera -- */
+static int sd_start(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
reg_w1(gspca_dev, R0C_AD_WIDTHL, 0xe8); /* 0x20; 0x0c */
reg_w1(gspca_dev, R0D_AD_WIDTHH, 0x03);
@@ -371,19 +286,15 @@ static int sd_start(struct gspca_dev *gspca_dev)
reg_w1(gspca_dev, R2E_POINTH, 0x01);
reg_w1(gspca_dev, R2F_POINTB, 0x12);
reg_w1(gspca_dev, R30_POINTBH, 0x01);
- reg_w1(gspca_dev, R00_PART_CONTROL, LATENT_CHANGE | EXPO_CHANGE);
+
+ tv_8532_setReg(gspca_dev);
+
+ setexposure(gspca_dev);
+ setgain(gspca_dev);
+
/************************************************/
reg_w1(gspca_dev, R31_UPD, 0x01); /* update registers */
msleep(200);
- reg_w1(gspca_dev, R31_UPD, 0x00); /* end update */
- /************************************************/
- tv_8532_setReg(gspca_dev);
- /************************************************/
- reg_w1(gspca_dev, R3B_Test3, 0x0b); /* Test0Sel = 11 = GPIO */
- /************************************************/
- tv_8532_setReg(gspca_dev);
- /************************************************/
- tv_8532_PollReg(gspca_dev);
reg_w1(gspca_dev, R31_UPD, 0x00); /* end update */
gspca_dev->empty_packet = 0; /* check the empty packets */
@@ -428,21 +339,39 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
data + gspca_dev->width + 5, gspca_dev->width);
}
-static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
+static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ sd->exposure = val;
+ if (gspca_dev->streaming)
+ setexposure(gspca_dev);
+ return 0;
+}
+
+static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+
+ *val = sd->exposure;
+ return 0;
+}
+
+static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
- sd->brightness = val;
+ sd->gain = val;
if (gspca_dev->streaming)
- setbrightness(gspca_dev);
+ setgain(gspca_dev);
return 0;
}
-static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
+static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
{
struct sd *sd = (struct sd *) gspca_dev;
- *val = sd->brightness;
+ *val = sd->gain;
return 0;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.