summaryrefslogtreecommitdiffstats
path: root/drivers/media/video/gspca/spca561.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/gspca/spca561.c')
-rw-r--r--drivers/media/video/gspca/spca561.c105
1 files changed, 46 insertions, 59 deletions
diff --git a/drivers/media/video/gspca/spca561.c b/drivers/media/video/gspca/spca561.c
index c99c5e34e211..27e82b35f3e7 100644
--- a/drivers/media/video/gspca/spca561.c
+++ b/drivers/media/video/gspca/spca561.c
@@ -34,8 +34,8 @@ struct sd {
__u16 exposure; /* rev12a only */
#define EXPOSURE_MIN 1
-#define EXPOSURE_DEF 200
-#define EXPOSURE_MAX (4095 - 900) /* see set_exposure */
+#define EXPOSURE_DEF 700 /* == 10 fps */
+#define EXPOSURE_MAX (2047 + 325) /* see setexposure */
__u8 contrast; /* rev72a only */
#define CONTRAST_MIN 0x00
@@ -48,9 +48,9 @@ struct sd {
#define BRIGHTNESS_MAX 0x3f
__u8 white;
-#define WHITE_MIN 1
-#define WHITE_DEF 0x40
-#define WHITE_MAX 0x7f
+#define HUE_MIN 1
+#define HUE_DEF 0x40
+#define HUE_MAX 0x7f
__u8 autogain;
#define AUTOGAIN_MIN 0
@@ -58,9 +58,9 @@ struct sd {
#define AUTOGAIN_MAX 1
__u8 gain; /* rev12a only */
-#define GAIN_MIN 0x0
-#define GAIN_DEF 0x24
-#define GAIN_MAX 0x24
+#define GAIN_MIN 0
+#define GAIN_DEF 63
+#define GAIN_MAX 255
#define EXPO12A_DEF 3
__u8 expo12a; /* expo/gain? for rev 12a */
@@ -461,7 +461,7 @@ static int sd_config(struct gspca_dev *gspca_dev,
}
sd->brightness = BRIGHTNESS_DEF;
sd->contrast = CONTRAST_DEF;
- sd->white = WHITE_DEF;
+ sd->white = HUE_DEF;
sd->exposure = EXPOSURE_DEF;
sd->autogain = AUTOGAIN_DEF;
sd->gain = GAIN_DEF;
@@ -549,8 +549,7 @@ static void setcontrast(struct gspca_dev *gspca_dev)
static void setexposure(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
- int expo;
- int clock_divider;
+ int i, expo = 0;
/* Register 0x8309 controls exposure for the spca561,
the basic exposure setting goes from 1-2047, where 1 is completely
@@ -564,16 +563,22 @@ static void setexposure(struct gspca_dev *gspca_dev)
configure a divider for the base framerate which us used at the
exposure setting of 1-300. These bits configure the base framerate
according to the following formula: fps = 60 / (value + 2) */
- if (sd->exposure < 2048) {
- expo = sd->exposure;
- clock_divider = 0;
- } else {
- /* Add 900 to make the 0 setting of the second part of the
- exposure equal to the 2047 setting of the first part. */
- expo = (sd->exposure - 2048) + 900;
- clock_divider = 3;
+
+ /* We choose to use the high bits setting the fixed framerate divisor
+ asap, as setting high basic exposure setting without the fixed
+ divider in combination with high gains makes the cam stop */
+ int table[] = { 0, 450, 550, 625, EXPOSURE_MAX };
+
+ for (i = 0; i < ARRAY_SIZE(table) - 1; i++) {
+ if (sd->exposure <= table[i + 1]) {
+ expo = sd->exposure - table[i];
+ if (i)
+ expo += 300;
+ expo |= i << 11;
+ break;
+ }
}
- expo |= clock_divider << 11;
+
gspca_dev->usb_buf[0] = expo;
gspca_dev->usb_buf[1] = expo >> 8;
reg_w_buf(gspca_dev, 0x8309, 2);
@@ -584,7 +589,16 @@ static void setgain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
- gspca_dev->usb_buf[0] = sd->gain;
+ /* gain reg low 6 bits 0-63 gain, bit 6 and 7, both double the
+ sensitivity when set, so 31 + one of them set == 63, and 15
+ with both of them set == 63 */
+ if (sd->gain < 64)
+ gspca_dev->usb_buf[0] = sd->gain;
+ else if (sd->gain < 128)
+ gspca_dev->usb_buf[0] = (sd->gain / 2) | 0x40;
+ else
+ gspca_dev->usb_buf[0] = (sd->gain / 4) | 0xC0;
+
gspca_dev->usb_buf[1] = 0;
reg_w_buf(gspca_dev, 0x8335, 2);
}
@@ -629,8 +643,7 @@ static int sd_start_12a(struct gspca_dev *gspca_dev)
reg_w_buf(gspca_dev, 0x8391, 8);
reg_w_buf(gspca_dev, 0x8390, 8);
setwhite(gspca_dev);
- setautogain(gspca_dev);
-/* setgain(gspca_dev); */
+ setgain(gspca_dev);
setexposure(gspca_dev);
return 0;
}
@@ -762,18 +775,6 @@ static void do_autogain(struct gspca_dev *gspca_dev)
i2c_write(gspca_dev, expotimes | pixelclk, 0x09);
}
break;
- case Rev012A:
- reg_r(gspca_dev, 0x8330, 2);
- if (gspca_dev->usb_buf[1] > 0x08) {
- gspca_dev->usb_buf[0] = ++sd->expo12a;
- gspca_dev->usb_buf[1] = 0;
- reg_w_buf(gspca_dev, 0x8339, 2);
- } else if (gspca_dev->usb_buf[1] < 0x02) {
- gspca_dev->usb_buf[0] = --sd->expo12a;
- gspca_dev->usb_buf[1] = 0;
- reg_w_buf(gspca_dev, 0x8339, 2);
- }
- break;
}
}
@@ -928,13 +929,13 @@ static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
static struct ctrl sd_ctrls_12a[] = {
{
{
- .id = V4L2_CID_DO_WHITE_BALANCE,
+ .id = V4L2_CID_HUE,
.type = V4L2_CTRL_TYPE_INTEGER,
- .name = "White Balance",
- .minimum = WHITE_MIN,
- .maximum = WHITE_MAX,
+ .name = "Hue",
+ .minimum = HUE_MIN,
+ .maximum = HUE_MAX,
.step = 1,
- .default_value = WHITE_DEF,
+ .default_value = HUE_DEF,
},
.set = sd_setwhite,
.get = sd_getwhite,
@@ -954,19 +955,6 @@ static struct ctrl sd_ctrls_12a[] = {
},
{
{
- .id = V4L2_CID_AUTOGAIN,
- .type = V4L2_CTRL_TYPE_BOOLEAN,
- .name = "Auto Gain",
- .minimum = AUTOGAIN_MIN,
- .maximum = AUTOGAIN_MAX,
- .step = 1,
- .default_value = AUTOGAIN_DEF,
- },
- .set = sd_setautogain,
- .get = sd_getautogain,
- },
- {
- {
.id = V4L2_CID_GAIN,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Gain",
@@ -983,13 +971,13 @@ static struct ctrl sd_ctrls_12a[] = {
static struct ctrl sd_ctrls_72a[] = {
{
{
- .id = V4L2_CID_DO_WHITE_BALANCE,
+ .id = V4L2_CID_HUE,
.type = V4L2_CTRL_TYPE_INTEGER,
- .name = "White Balance",
- .minimum = WHITE_MIN,
- .maximum = WHITE_MAX,
+ .name = "Hue",
+ .minimum = HUE_MIN,
+ .maximum = HUE_MAX,
.step = 1,
- .default_value = WHITE_DEF,
+ .default_value = HUE_DEF,
},
.set = sd_setwhite,
.get = sd_getwhite,
@@ -1046,7 +1034,6 @@ static const struct sd_desc sd_desc_12a = {
.stopN = sd_stopN,
.stop0 = sd_stop0,
.pkt_scan = sd_pkt_scan,
-/* .dq_callback = do_autogain, * fixme */
};
static const struct sd_desc sd_desc_72a = {
.name = MODULE_NAME,
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 19:58:59 +0100