/* Include pac common sof detection functions */
#include "pac_common.h"
+#define PAC7302_GAIN_DEFAULT 15
+#define PAC7302_GAIN_KNEE 42
+#define PAC7302_EXPOSURE_DEFAULT 66 /* 33 ms / 30 fps */
+#define PAC7302_EXPOSURE_KNEE 133 /* 66 ms / 15 fps */
+
MODULE_AUTHOR("Jean-Francois Moine <http://moinejf.free.fr>, "
"Thomas Kaiser thomas@kaiser-linux.li");
MODULE_DESCRIPTION("Pixart PAC7302");
MODULE_LICENSE("GPL");
-enum e_ctrl {
- BRIGHTNESS,
- CONTRAST,
- COLORS,
- WHITE_BALANCE,
- RED_BALANCE,
- BLUE_BALANCE,
- GAIN,
- AUTOGAIN,
- EXPOSURE,
- VFLIP,
- HFLIP,
- NCTRLS /* number of controls */
-};
-
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
- struct gspca_ctrl ctrls[NCTRLS];
-
+ struct { /* brightness / contrast cluster */
+ struct v4l2_ctrl *brightness;
+ struct v4l2_ctrl *contrast;
+ };
+ struct v4l2_ctrl *saturation;
+ struct v4l2_ctrl *white_balance;
+ struct v4l2_ctrl *red_balance;
+ struct v4l2_ctrl *blue_balance;
+ struct { /* flip cluster */
+ struct v4l2_ctrl *hflip;
+ struct v4l2_ctrl *vflip;
+ };
u8 flags;
#define FL_HFLIP 0x01 /* mirrored by default */
#define FL_VFLIP 0x02 /* vertical flipped by default */
atomic_t avg_lum;
};
-/* V4L2 controls supported by the driver */
-static void setbrightcont(struct gspca_dev *gspca_dev);
-static void setcolors(struct gspca_dev *gspca_dev);
-static void setwhitebalance(struct gspca_dev *gspca_dev);
-static void setredbalance(struct gspca_dev *gspca_dev);
-static void setbluebalance(struct gspca_dev *gspca_dev);
-static void setgain(struct gspca_dev *gspca_dev);
-static void setexposure(struct gspca_dev *gspca_dev);
-static void setautogain(struct gspca_dev *gspca_dev);
-static void sethvflip(struct gspca_dev *gspca_dev);
-
-static const struct ctrl sd_ctrls[] = {
-[BRIGHTNESS] = {
- {
- .id = V4L2_CID_BRIGHTNESS,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Brightness",
- .minimum = 0,
-#define BRIGHTNESS_MAX 0x20
- .maximum = BRIGHTNESS_MAX,
- .step = 1,
- .default_value = 0x10,
- },
- .set_control = setbrightcont
- },
-[CONTRAST] = {
- {
- .id = V4L2_CID_CONTRAST,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Contrast",
- .minimum = 0,
-#define CONTRAST_MAX 255
- .maximum = CONTRAST_MAX,
- .step = 1,
- .default_value = 127,
- },
- .set_control = setbrightcont
- },
-[COLORS] = {
- {
- .id = V4L2_CID_SATURATION,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Saturation",
- .minimum = 0,
-#define COLOR_MAX 255
- .maximum = COLOR_MAX,
- .step = 1,
- .default_value = 127
- },
- .set_control = setcolors
- },
-[WHITE_BALANCE] = {
- {
- .id = V4L2_CID_WHITE_BALANCE_TEMPERATURE,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "White Balance",
- .minimum = 0,
- .maximum = 255,
- .step = 1,
- .default_value = 4,
- },
- .set_control = setwhitebalance
- },
-[RED_BALANCE] = {
- {
- .id = V4L2_CID_RED_BALANCE,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Red",
- .minimum = 0,
- .maximum = 3,
- .step = 1,
- .default_value = 1,
- },
- .set_control = setredbalance
- },
-[BLUE_BALANCE] = {
- {
- .id = V4L2_CID_BLUE_BALANCE,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Blue",
- .minimum = 0,
- .maximum = 3,
- .step = 1,
- .default_value = 1,
- },
- .set_control = setbluebalance
- },
-[GAIN] = {
- {
- .id = V4L2_CID_GAIN,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Gain",
- .minimum = 0,
- .maximum = 62,
- .step = 1,
-#define GAIN_DEF 15
-#define GAIN_KNEE 46
- .default_value = GAIN_DEF,
- },
- .set_control = setgain
- },
-[EXPOSURE] = {
- {
- .id = V4L2_CID_EXPOSURE,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Exposure",
- .minimum = 0,
- .maximum = 1023,
- .step = 1,
-#define EXPOSURE_DEF 66 /* 33 ms / 30 fps */
-#define EXPOSURE_KNEE 133 /* 66 ms / 15 fps */
- .default_value = EXPOSURE_DEF,
- },
- .set_control = setexposure
- },
-[AUTOGAIN] = {
- {
- .id = V4L2_CID_AUTOGAIN,
- .type = V4L2_CTRL_TYPE_BOOLEAN,
- .name = "Auto Gain",
- .minimum = 0,
- .maximum = 1,
- .step = 1,
-#define AUTOGAIN_DEF 1
- .default_value = AUTOGAIN_DEF,
- },
- .set_control = setautogain,
- },
-[HFLIP] = {
- {
- .id = V4L2_CID_HFLIP,
- .type = V4L2_CTRL_TYPE_BOOLEAN,
- .name = "Mirror",
- .minimum = 0,
- .maximum = 1,
- .step = 1,
- .default_value = 0,
- },
- .set_control = sethvflip,
- },
-[VFLIP] = {
- {
- .id = V4L2_CID_VFLIP,
- .type = V4L2_CTRL_TYPE_BOOLEAN,
- .name = "Vflip",
- .minimum = 0,
- .maximum = 1,
- .step = 1,
- .default_value = 0,
- },
- .set_control = sethvflip
- },
-};
-
static const struct v4l2_pix_format vga_mode[] = {
{640, 480, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
.bytesperline = 640,
cam->cam_mode = vga_mode; /* only 640x480 */
cam->nmodes = ARRAY_SIZE(vga_mode);
- gspca_dev->cam.ctrls = sd->ctrls;
-
sd->flags = id->driver_info;
return 0;
}
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
for (i = 0; i < 10; i++) {
v = max[i];
- v += (sd->ctrls[BRIGHTNESS].val - BRIGHTNESS_MAX)
- * 150 / BRIGHTNESS_MAX; /* 200 ? */
- v -= delta[i] * sd->ctrls[CONTRAST].val / CONTRAST_MAX;
+ v += (sd->brightness->val - sd->brightness->maximum)
+ * 150 / sd->brightness->maximum; /* 200 ? */
+ v -= delta[i] * sd->contrast->val / sd->contrast->maximum;
if (v < 0)
v = 0;
else if (v > 0xff)
reg_w(gspca_dev, 0x11, 0x01);
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
for (i = 0; i < 9; i++) {
- v = a[i] * sd->ctrls[COLORS].val / COLOR_MAX + b[i];
+ v = a[i] * sd->saturation->val / sd->saturation->maximum;
+ v += b[i];
reg_w(gspca_dev, 0x0f + 2 * i, (v >> 8) & 0x07);
reg_w(gspca_dev, 0x0f + 2 * i + 1, v);
}
struct sd *sd = (struct sd *) gspca_dev;
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
- reg_w(gspca_dev, 0xc6, sd->ctrls[WHITE_BALANCE].val);
+ reg_w(gspca_dev, 0xc6, sd->white_balance->val);
reg_w(gspca_dev, 0xdc, 0x01);
}
struct sd *sd = (struct sd *) gspca_dev;
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
- reg_w(gspca_dev, 0xc5, sd->ctrls[RED_BALANCE].val);
+ reg_w(gspca_dev, 0xc5, sd->red_balance->val);
reg_w(gspca_dev, 0xdc, 0x01);
}
struct sd *sd = (struct sd *) gspca_dev;
reg_w(gspca_dev, 0xff, 0x00); /* page 0 */
- reg_w(gspca_dev, 0xc7, sd->ctrls[BLUE_BALANCE].val);
+ reg_w(gspca_dev, 0xc7, sd->blue_balance->val);
reg_w(gspca_dev, 0xdc, 0x01);
}
static void setgain(struct gspca_dev *gspca_dev)
{
- struct sd *sd = (struct sd *) gspca_dev;
u8 reg10, reg12;
- if (sd->ctrls[GAIN].val < 32) {
- reg10 = sd->ctrls[GAIN].val;
+ if (gspca_dev->gain->val < 32) {
+ reg10 = gspca_dev->gain->val;
reg12 = 0;
} else {
reg10 = 31;
- reg12 = sd->ctrls[GAIN].val - 31;
+ reg12 = gspca_dev->gain->val - 31;
}
reg_w(gspca_dev, 0xff, 0x03); /* page 3 */
static void setexposure(struct gspca_dev *gspca_dev)
{
- struct sd *sd = (struct sd *) gspca_dev;
u8 clockdiv;
u16 exposure;
* no fps according to the formula: 90 / reg. sd->exposure is the
* desired exposure time in 0.5 ms.
*/
- clockdiv = (90 * sd->ctrls[EXPOSURE].val + 1999) / 2000;
+ clockdiv = (90 * gspca_dev->exposure->val + 1999) / 2000;
/*
* Note clockdiv = 3 also works, but when running at 30 fps, depending
* frame exposure time in ms = 1000 * clockdiv / 90 ->
* exposure = (sd->exposure / 2) * 448 / (1000 * clockdiv / 90)
*/
- exposure = (sd->ctrls[EXPOSURE].val * 45 * 448) / (1000 * clockdiv);
+ exposure = (gspca_dev->exposure->val * 45 * 448) / (1000 * clockdiv);
/* 0 = use full frametime, 448 = no exposure, reverse it */
exposure = 448 - exposure;
reg_w(gspca_dev, 0x11, 0x01);
}
-static void setautogain(struct gspca_dev *gspca_dev)
-{
- struct sd *sd = (struct sd *) gspca_dev;
-
- /*
- * When switching to autogain set defaults to make sure
- * 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->ctrls[AUTOGAIN].val) {
- sd->ctrls[EXPOSURE].val = EXPOSURE_DEF;
- sd->ctrls[GAIN].val = GAIN_DEF;
- sd->autogain_ignore_frames =
- PAC_AUTOGAIN_IGNORE_FRAMES;
- } else {
- sd->autogain_ignore_frames = -1;
- }
- setexposure(gspca_dev);
- setgain(gspca_dev);
-}
-
static void sethvflip(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
u8 data, hflip, vflip;
- hflip = sd->ctrls[HFLIP].val;
+ hflip = sd->hflip->val;
if (sd->flags & FL_HFLIP)
hflip = !hflip;
- vflip = sd->ctrls[VFLIP].val;
+ vflip = sd->vflip->val;
if (sd->flags & FL_VFLIP)
vflip = !vflip;
return gspca_dev->usb_err;
}
+static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct gspca_dev *gspca_dev =
+ container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
+ struct sd *sd = (struct sd *)gspca_dev;
+
+ gspca_dev->usb_err = 0;
+
+ if (ctrl->id == V4L2_CID_AUTOGAIN && ctrl->is_new && ctrl->val) {
+ /* when switching to autogain set defaults to make sure
+ we are on a valid point of the autogain gain /
+ exposure knee graph, and give this change time to
+ take effect before doing autogain. */
+ gspca_dev->exposure->val = PAC7302_EXPOSURE_DEFAULT;
+ gspca_dev->gain->val = PAC7302_GAIN_DEFAULT;
+ sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
+ }
+
+ if (!gspca_dev->streaming)
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_BRIGHTNESS:
+ setbrightcont(gspca_dev);
+ break;
+ case V4L2_CID_SATURATION:
+ setcolors(gspca_dev);
+ break;
+ case V4L2_CID_WHITE_BALANCE_TEMPERATURE:
+ setwhitebalance(gspca_dev);
+ break;
+ case V4L2_CID_RED_BALANCE:
+ setredbalance(gspca_dev);
+ break;
+ case V4L2_CID_BLUE_BALANCE:
+ setbluebalance(gspca_dev);
+ break;
+ case V4L2_CID_AUTOGAIN:
+ if (gspca_dev->exposure->is_new || (ctrl->is_new && ctrl->val))
+ setexposure(gspca_dev);
+ if (gspca_dev->gain->is_new || (ctrl->is_new && ctrl->val))
+ setgain(gspca_dev);
+ break;
+ case V4L2_CID_HFLIP:
+ sethvflip(gspca_dev);
+ break;
+ default:
+ return -EINVAL;
+ }
+ return gspca_dev->usb_err;
+}
+
+static const struct v4l2_ctrl_ops sd_ctrl_ops = {
+ .s_ctrl = sd_s_ctrl,
+};
+
+/* this function is called at probe time */
+static int sd_init_controls(struct gspca_dev *gspca_dev)
+{
+ struct sd *sd = (struct sd *) gspca_dev;
+ struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
+
+ gspca_dev->vdev.ctrl_handler = hdl;
+ v4l2_ctrl_handler_init(hdl, 11);
+
+ sd->brightness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_BRIGHTNESS, 0, 32, 1, 16);
+ sd->contrast = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_CONTRAST, 0, 255, 1, 127);
+
+ sd->saturation = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_SATURATION, 0, 255, 1, 127);
+ sd->white_balance = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_WHITE_BALANCE_TEMPERATURE,
+ 0, 255, 1, 4);
+ sd->red_balance = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_RED_BALANCE, 0, 3, 1, 1);
+ sd->blue_balance = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_RED_BALANCE, 0, 3, 1, 1);
+
+ gspca_dev->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
+ gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_EXPOSURE, 0, 1023, 1,
+ PAC7302_EXPOSURE_DEFAULT);
+ gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_GAIN, 0, 62, 1,
+ PAC7302_GAIN_DEFAULT);
+
+ sd->hflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_HFLIP, 0, 1, 1, 0);
+ sd->vflip = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_VFLIP, 0, 1, 1, 0);
+
+ if (hdl->error) {
+ pr_err("Could not initialize controls\n");
+ return hdl->error;
+ }
+
+ v4l2_ctrl_cluster(2, &sd->brightness);
+ v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, false);
+ v4l2_ctrl_cluster(2, &sd->hflip);
+ return 0;
+}
+
+/* -- start the camera -- */
static int sd_start(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
setwhitebalance(gspca_dev);
setredbalance(gspca_dev);
setbluebalance(gspca_dev);
- setautogain(gspca_dev);
+ setexposure(gspca_dev);
+ setgain(gspca_dev);
sethvflip(gspca_dev);
sd->sof_read = 0;
- atomic_set(&sd->avg_lum, 270 + sd->ctrls[BRIGHTNESS].val);
+ sd->autogain_ignore_frames = 0;
+ atomic_set(&sd->avg_lum, 270 + sd->brightness->val);
/* start stream */
reg_w(gspca_dev, 0xff, 0x01);
reg_w(gspca_dev, 0x78, 0x40);
}
-#define WANT_REGULAR_AUTOGAIN
-#include "autogain_functions.h"
-
static void do_autogain(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
if (sd->autogain_ignore_frames > 0) {
sd->autogain_ignore_frames--;
} else {
- desired_lum = 270 + sd->ctrls[BRIGHTNESS].val;
+ desired_lum = 270 + sd->brightness->val;
- auto_gain_n_exposure(gspca_dev, avg_lum, desired_lum,
- deadzone, GAIN_KNEE, EXPOSURE_KNEE);
- sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
+ if (gspca_expo_autogain(gspca_dev, avg_lum, desired_lum,
+ deadzone, PAC7302_GAIN_KNEE,
+ PAC7302_EXPOSURE_KNEE))
+ sd->autogain_ignore_frames =
+ PAC_AUTOGAIN_IGNORE_FRAMES;
}
}
/* sub-driver description for pac7302 */
static const struct sd_desc sd_desc = {
.name = KBUILD_MODNAME,
- .ctrls = sd_ctrls,
- .nctrls = ARRAY_SIZE(sd_ctrls),
.config = sd_config,
.init = sd_init,
+ .init_controls = sd_init_controls,
.start = sd_start,
.stopN = sd_stopN,
.stop0 = sd_stop0,
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