MODULE_DESCRIPTION("GSPCA/SN9C102 USB Camera Driver");
MODULE_LICENSE("GPL");
+/* controls */
+enum e_ctrl {
+ BRIGHTNESS,
+ GAIN,
+ EXPOSURE,
+ AUTOGAIN,
+ FREQ,
+ NCTRLS /* number of controls */
+};
+
/* specific webcam descriptor */
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
+
+ struct gspca_ctrl ctrls[NCTRLS];
+
atomic_t avg_lum;
int prev_avg_lum;
int exp_too_low_cnt;
int header_read;
u8 header[12]; /* Header without sof marker */
- unsigned short exposure;
- unsigned char gain;
- unsigned char brightness;
- unsigned char autogain;
unsigned char autogain_ignore_frames;
unsigned char frames_to_drop;
- unsigned char freq; /* light freq filter setting */
__u8 bridge; /* Type of bridge */
#define BRIDGE_101 0
#define MODE_REDUCED_SIF 0x20 /* vga mode (320x240 / 160x120) on sif cam */
/* ctrl_dis helper macros */
-#define NO_EXPO ((1 << EXPOSURE_IDX) | (1 << COARSE_EXPOSURE_IDX) | \
- (1 << AUTOGAIN_IDX))
-#define NO_FREQ (1 << FREQ_IDX)
-#define NO_BRIGHTNESS (1 << BRIGHTNESS_IDX)
+#define NO_EXPO ((1 << EXPOSURE) | (1 << AUTOGAIN))
+#define NO_FREQ (1 << FREQ)
+#define NO_BRIGHTNESS (1 << BRIGHTNESS)
#define COMP 0xc7 /* 0x87 //0x07 */
#define COMP1 0xc9 /* 0x89 //0x09 */
#define AUTOGAIN_IGNORE_FRAMES 1
/* 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_setgain(struct gspca_dev *gspca_dev, __s32 val);
-static int sd_getgain(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 void setbrightness(struct gspca_dev *gspca_dev);
+static void setgain(struct gspca_dev *gspca_dev);
+static void setexposure(struct gspca_dev *gspca_dev);
static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val);
-static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val);
-static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val);
-static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val);
+static void setfreq(struct gspca_dev *gspca_dev);
-static const struct ctrl sd_ctrls[] = {
-#define BRIGHTNESS_IDX 0
- {
+static const struct ctrl sd_ctrls[NCTRLS] = {
+[BRIGHTNESS] = {
{
.id = V4L2_CID_BRIGHTNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
.minimum = 0,
.maximum = 255,
.step = 1,
-#define BRIGHTNESS_DEF 127
- .default_value = BRIGHTNESS_DEF,
+ .default_value = 127,
},
- .set = sd_setbrightness,
- .get = sd_getbrightness,
+ .set_control = setbrightness
},
-#define GAIN_IDX 1
- {
+[GAIN] = {
{
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.minimum = 0,
.maximum = 255,
.step = 1,
-#define GAIN_DEF 127
#define GAIN_KNEE 230
- .default_value = GAIN_DEF,
+ .default_value = 127,
},
- .set = sd_setgain,
- .get = sd_getgain,
+ .set_control = setgain
},
-#define EXPOSURE_IDX 2
- {
+[EXPOSURE] = {
{
.id = V4L2_CID_EXPOSURE,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Exposure",
-#define EXPOSURE_DEF 66 /* 33 ms / 30 fps (except on PASXXX) */
-#define EXPOSURE_KNEE 200 /* 100 ms / 10 fps (except on PASXXX) */
.minimum = 0,
.maximum = 1023,
.step = 1,
- .default_value = EXPOSURE_DEF,
+ .default_value = 66,
+ /* 33 ms / 30 fps (except on PASXXX) */
+#define EXPOSURE_KNEE 200 /* 100 ms / 10 fps (except on PASXXX) */
.flags = 0,
},
- .set = sd_setexposure,
- .get = sd_getexposure,
+ .set_control = setexposure
},
-#define COARSE_EXPOSURE_IDX 3
- {
- {
- .id = V4L2_CID_EXPOSURE,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Exposure",
+/* for coarse exposure */
+#define COARSE_EXPOSURE_MIN 2
+#define COARSE_EXPOSURE_MAX 15
#define COARSE_EXPOSURE_DEF 2 /* 30 fps */
- .minimum = 2,
- .maximum = 15,
- .step = 1,
- .default_value = COARSE_EXPOSURE_DEF,
- .flags = 0,
- },
- .set = sd_setexposure,
- .get = sd_getexposure,
- },
-#define AUTOGAIN_IDX 4
- {
+[AUTOGAIN] = {
{
.id = V4L2_CID_AUTOGAIN,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.flags = 0,
},
.set = sd_setautogain,
- .get = sd_getautogain,
},
-#define FREQ_IDX 5
- {
+[FREQ] = {
{
.id = V4L2_CID_POWER_LINE_FREQUENCY,
.type = V4L2_CTRL_TYPE_MENU,
#define FREQ_DEF 0
.default_value = FREQ_DEF,
},
- .set = sd_setfreq,
- .get = sd_getfreq,
+ .set_control = setfreq
},
};
/* change reg 0x06 */
i2cOV[1] = sensor_data[sd->sensor].sensor_addr;
- i2cOV[3] = sd->brightness;
+ i2cOV[3] = sd->ctrls[BRIGHTNESS].val;
if (i2c_w(gspca_dev, i2cOV) < 0)
goto err;
break;
i2cpdoit[2] = 0x13;
}
- if (sd->brightness < 127) {
+ if (sd->ctrls[BRIGHTNESS].val < 127) {
/* change reg 0x0b, signreg */
i2cpbright[3] = 0x01;
/* set reg 0x0c, offset */
- i2cpbright[4] = 127 - sd->brightness;
+ i2cpbright[4] = 127 - sd->ctrls[BRIGHTNESS].val;
} else
- i2cpbright[4] = sd->brightness - 127;
+ i2cpbright[4] = sd->ctrls[BRIGHTNESS].val - 127;
if (i2c_w(gspca_dev, i2cpbright) < 0)
goto err;
static void setsensorgain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
- unsigned char gain = sd->gain;
+ u8 gain = sd->ctrls[GAIN].val;
switch (sd->sensor) {
case SENSOR_HV7131D: {
__u8 i2c[] =
{0xc0, 0x11, 0x31, 0x00, 0x00, 0x00, 0x00, 0x17};
- i2c[3] = 0x3f - (sd->gain / 4);
- i2c[4] = 0x3f - (sd->gain / 4);
- i2c[5] = 0x3f - (sd->gain / 4);
+ i2c[3] = 0x3f - (gain / 4);
+ i2c[4] = 0x3f - (gain / 4);
+ i2c[5] = 0x3f - (gain / 4);
if (i2c_w(gspca_dev, i2c) < 0)
goto err;
i2cpdoit[2] = 0x13;
}
- i2cpgain[3] = sd->gain >> 3;
- i2cpcolorgain[3] = sd->gain >> 4;
- i2cpcolorgain[4] = sd->gain >> 4;
- i2cpcolorgain[5] = sd->gain >> 4;
- i2cpcolorgain[6] = sd->gain >> 4;
+ i2cpgain[3] = gain >> 3;
+ i2cpcolorgain[3] = gain >> 4;
+ i2cpcolorgain[4] = gain >> 4;
+ i2cpcolorgain[5] = gain >> 4;
+ i2cpcolorgain[6] = gain >> 4;
if (i2c_w(gspca_dev, i2cpgain) < 0)
goto err;
}
if (sd->bridge == BRIDGE_103) {
- gain = sd->gain >> 1;
+ gain = sd->ctrls[GAIN].val >> 1;
buf[0] = gain; /* Red */
buf[1] = gain; /* Green */
buf[2] = gain; /* Blue */
reg_w(gspca_dev, 0x05, buf, 3);
} else {
- gain = sd->gain >> 4;
+ gain = sd->ctrls[GAIN].val >> 4;
buf[0] = gain << 4 | gain; /* Red and blue */
buf[1] = gain; /* Green */
reg_w(gspca_dev, 0x10, buf, 2);
where the framerate starts dropping
2) At 6138 the framerate has already dropped to 2 fps,
going any lower makes little sense */
- __u16 reg = sd->exposure * 6;
+ u16 reg = sd->ctrls[EXPOSURE].val * 6;
+
i2c[3] = reg >> 8;
i2c[4] = reg & 0xff;
if (i2c_w(gspca_dev, i2c) != 0)
/* register 19's high nibble contains the sn9c10x clock divider
The high nibble configures the no fps according to the
formula: 60 / high_nibble. With a maximum of 30 fps */
- __u8 reg = sd->exposure;
+ u8 reg = sd->ctrls[EXPOSURE].val;
+
reg = (reg << 4) | 0x0b;
reg_w(gspca_dev, 0x19, ®, 1);
break;
} else
reg10_max = 0x41;
- reg11 = (15 * sd->exposure + 999) / 1000;
+ reg11 = (15 * sd->ctrls[EXPOSURE].val + 999) / 1000;
if (reg11 < 1)
reg11 = 1;
else if (reg11 > 16)
reg11 = 4;
/* frame exposure time in ms = 1000 * reg11 / 30 ->
- reg10 = (sd->exposure / 2) * reg10_max / (1000 * reg11 / 30) */
- reg10 = (sd->exposure * 15 * reg10_max) / (1000 * reg11);
+ reg10 = (sd->ctrls[EXPOSURE].val / 2) * reg10_max
+ / (1000 * reg11 / 30) */
+ reg10 = (sd->ctrls[EXPOSURE].val * 15 * reg10_max)
+ / (1000 * reg11);
/* Don't allow this to get below 10 when using autogain, the
steps become very large (relatively) when below 10 causing
the image to oscilate from much too dark, to much too bright
and back again. */
- if (sd->autogain && reg10 < 10)
+ if (sd->ctrls[AUTOGAIN].val && reg10 < 10)
reg10 = 10;
else if (reg10 > reg10_max)
reg10 = reg10_max;
frame exposure times (like we are doing with the ov chips),
as that sometimes leads to jumps in the exposure control,
which are bad for auto exposure. */
- if (sd->exposure < 200) {
- i2cpexpo[3] = 255 - (sd->exposure * 255) / 200;
+ if (sd->ctrls[EXPOSURE].val < 200) {
+ i2cpexpo[3] = 255 - (sd->ctrls[EXPOSURE].val * 255)
+ / 200;
framerate_ctrl = 500;
} else {
/* The PAS202's exposure control goes from 0 - 4095,
but anything below 500 causes vsync issues, so scale
our 200-1023 to 500-4095 */
- framerate_ctrl = (sd->exposure - 200) * 1000 / 229 +
- 500;
+ framerate_ctrl = (sd->ctrls[EXPOSURE].val - 200)
+ * 1000 / 229 + 500;
}
i2cpframerate[3] = framerate_ctrl >> 6;
/* For values below 150 use partial frame exposure, above
that use framerate ctrl */
- if (sd->exposure < 150) {
- i2cpexpo[3] = 150 - sd->exposure;
+ if (sd->ctrls[EXPOSURE].val < 150) {
+ i2cpexpo[3] = 150 - sd->ctrls[EXPOSURE].val;
framerate_ctrl = 300;
} else {
/* The PAS106's exposure control goes from 0 - 4095,
but anything below 300 causes vsync issues, so scale
our 150-1023 to 300-4095 */
- framerate_ctrl = (sd->exposure - 150) * 1000 / 230 +
- 300;
+ framerate_ctrl = (sd->ctrls[EXPOSURE].val - 150)
+ * 1000 / 230 + 300;
}
i2cpframerate[3] = framerate_ctrl >> 4;
0x2b register, see ov6630 datasheet.
0x4f / 0x8a -> (30 fps -> 25 fps), 0x00 -> no adjustment */
__u8 i2c[] = {0xa0, 0x00, 0x2b, 0x00, 0x00, 0x00, 0x00, 0x10};
- switch (sd->freq) {
+ switch (sd->ctrls[FREQ].val) {
default:
/* case 0: * no filter*/
/* case 2: * 60 hz */
}
}
-#include "coarse_expo_autogain.h"
+#include "autogain_functions.h"
static void do_autogain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
int avg_lum = atomic_read(&sd->avg_lum);
- if (avg_lum == -1 || !sd->autogain)
+ if (avg_lum == -1 || !sd->ctrls[AUTOGAIN].val)
return;
if (sd->autogain_ignore_frames > 0) {
}
if (sensor_data[sd->sensor].flags & F_COARSE_EXPO)
- result = gspca_coarse_grained_expo_autogain(gspca_dev, avg_lum,
- sd->brightness * desired_avg_lum / 127,
+ result = coarse_grained_expo_autogain(gspca_dev, avg_lum,
+ sd->ctrls[BRIGHTNESS].val
+ * desired_avg_lum / 127,
deadzone);
else
- result = gspca_auto_gain_n_exposure(gspca_dev, avg_lum,
- sd->brightness * desired_avg_lum / 127,
+ result = auto_gain_n_exposure(gspca_dev, avg_lum,
+ sd->ctrls[BRIGHTNESS].val
+ * desired_avg_lum / 127,
deadzone, GAIN_KNEE, EXPOSURE_KNEE);
if (result) {
PDEBUG(D_FRAM, "autogain: gain changed: gain: %d expo: %d",
- (int)sd->gain, (int)sd->exposure);
+ (int) sd->ctrls[GAIN].val,
+ (int) sd->ctrls[EXPOSURE].val);
sd->autogain_ignore_frames = AUTOGAIN_IGNORE_FRAMES;
}
}
/* copy the webcam info from the device id */
sd->sensor = id->driver_info >> 8;
sd->bridge = id->driver_info & 0xff;
+
gspca_dev->ctrl_dis = sensor_data[sd->sensor].ctrl_dis;
cam = &gspca_dev->cam;
+ cam->ctrls = sd->ctrls;
if (!(sensor_data[sd->sensor].flags & F_SIF)) {
cam->cam_mode = vga_mode;
cam->nmodes = ARRAY_SIZE(vga_mode);
}
cam->npkt = 36; /* 36 packets per ISOC message */
- sd->brightness = BRIGHTNESS_DEF;
- sd->gain = GAIN_DEF;
if (sensor_data[sd->sensor].flags & F_COARSE_EXPO) {
- sd->exposure = COARSE_EXPOSURE_DEF;
- gspca_dev->ctrl_dis |= (1 << EXPOSURE_IDX);
- } else {
- sd->exposure = EXPOSURE_DEF;
- gspca_dev->ctrl_dis |= (1 << COARSE_EXPOSURE_IDX);
+ sd->ctrls[EXPOSURE].min = COARSE_EXPOSURE_MIN;
+ sd->ctrls[EXPOSURE].max = COARSE_EXPOSURE_MAX;
+ sd->ctrls[EXPOSURE].def = COARSE_EXPOSURE_DEF;
}
- if (gspca_dev->ctrl_dis & (1 << AUTOGAIN_IDX))
- sd->autogain = 0; /* Disable do_autogain callback */
- else
- sd->autogain = AUTOGAIN_DEF;
- sd->freq = FREQ_DEF;
return 0;
}
}
}
-static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
-{
- struct sd *sd = (struct sd *) gspca_dev;
-
- sd->brightness = val;
- if (gspca_dev->streaming)
- setbrightness(gspca_dev);
- return 0;
-}
-
-static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
-{
- struct sd *sd = (struct sd *) gspca_dev;
-
- *val = sd->brightness;
- return 0;
-}
-
-static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
-{
- struct sd *sd = (struct sd *) gspca_dev;
-
- sd->gain = val;
- if (gspca_dev->streaming)
- setgain(gspca_dev);
- return 0;
-}
-
-static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
-{
- struct sd *sd = (struct sd *) gspca_dev;
-
- *val = sd->gain;
- return 0;
-}
-
-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_setautogain(struct gspca_dev *gspca_dev, __s32 val)
{
struct sd *sd = (struct sd *) gspca_dev;
- sd->autogain = val;
+ sd->ctrls[AUTOGAIN].val = val;
sd->exp_too_high_cnt = 0;
sd->exp_too_low_cnt = 0;
we are on a valid point of the autogain gain /
exposure knee graph, and give this change time to
take effect before doing autogain. */
- if (sd->autogain && !(sensor_data[sd->sensor].flags & F_COARSE_EXPO)) {
- sd->exposure = EXPOSURE_DEF;
- sd->gain = GAIN_DEF;
+ if (sd->ctrls[AUTOGAIN].val
+ && !(sensor_data[sd->sensor].flags & F_COARSE_EXPO)) {
+ sd->ctrls[EXPOSURE].val = sd->ctrls[EXPOSURE].def;
+ sd->ctrls[GAIN].val = sd->ctrls[GAIN].def;
if (gspca_dev->streaming) {
sd->autogain_ignore_frames = AUTOGAIN_IGNORE_FRAMES;
setexposure(gspca_dev);
return 0;
}
-static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val)
-{
- struct sd *sd = (struct sd *) gspca_dev;
-
- *val = sd->autogain;
- return 0;
-}
-
-static int sd_setfreq(struct gspca_dev *gspca_dev, __s32 val)
-{
- struct sd *sd = (struct sd *) gspca_dev;
-
- sd->freq = val;
- if (gspca_dev->streaming)
- setfreq(gspca_dev);
- return 0;
-}
-
-static int sd_getfreq(struct gspca_dev *gspca_dev, __s32 *val)
-{
- struct sd *sd = (struct sd *) gspca_dev;
-
- *val = sd->freq;
- return 0;
-}
-
static int sd_querymenu(struct gspca_dev *gspca_dev,
struct v4l2_querymenu *menu)
{
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