/* Include pac common sof detection functions */
#include "pac_common.h"
+#define PAC7311_GAIN_DEFAULT 122
+#define PAC7311_EXPOSURE_DEFAULT 3 /* 20 fps, avoid using high compr. */
+
MODULE_AUTHOR("Thomas Kaiser thomas@kaiser-linux.li");
MODULE_DESCRIPTION("Pixart PAC7311");
MODULE_LICENSE("GPL");
-enum e_ctrl {
- CONTRAST,
- GAIN,
- EXPOSURE,
- AUTOGAIN,
- HFLIP,
- VFLIP,
- NCTRLS /* number of controls */
-};
-
struct sd {
struct gspca_dev gspca_dev; /* !! must be the first item */
- struct gspca_ctrl ctrls[NCTRLS];
- int exp_too_low_cnt;
- int exp_too_high_cnt;
+
+ struct v4l2_ctrl *contrast;
+ struct { /* flip cluster */
+ struct v4l2_ctrl *hflip;
+ struct v4l2_ctrl *vflip;
+ };
u8 sof_read;
u8 autogain_ignore_frames;
atomic_t avg_lum;
};
-/* V4L2 controls supported by the driver */
-static void setcontrast(struct gspca_dev *gspca_dev);
-static void setgain(struct gspca_dev *gspca_dev);
-static void setexposure(struct gspca_dev *gspca_dev);
-static void sethvflip(struct gspca_dev *gspca_dev);
-
-static const struct ctrl sd_ctrls[] = {
-[CONTRAST] = {
- {
- .id = V4L2_CID_CONTRAST,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Contrast",
- .minimum = 0,
- .maximum = 15,
- .step = 1,
- .default_value = 7,
- },
- .set_control = setcontrast
- },
-[GAIN] = {
- {
- .id = V4L2_CID_GAIN,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Gain",
- .minimum = 0,
- .maximum = 244,
- .step = 1,
- .default_value = 122,
- },
- .set_control = setgain,
- },
-[EXPOSURE] = {
- {
- .id = V4L2_CID_EXPOSURE,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Exposure",
- .minimum = 2,
- .maximum = 63,
- .step = 1,
- .default_value = 3, /* 20 fps, avoid using high compr. */
- },
- .set_control = setexposure,
- },
-[AUTOGAIN] = {
- {
- .id = V4L2_CID_AUTOGAIN,
- .type = V4L2_CTRL_TYPE_BOOLEAN,
- .name = "Auto Gain",
- .minimum = 0,
- .maximum = 1,
- .step = 1,
- .default_value = 1,
- },
- },
-[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[] = {
{160, 120, V4L2_PIX_FMT_PJPG, V4L2_FIELD_NONE,
.bytesperline = 160,
static int sd_config(struct gspca_dev *gspca_dev,
const struct usb_device_id *id)
{
- struct sd *sd = (struct sd *) gspca_dev;
struct cam *cam = &gspca_dev->cam;
cam->cam_mode = vga_mode;
cam->nmodes = ARRAY_SIZE(vga_mode);
- gspca_dev->cam.ctrls = sd->ctrls;
-
return 0;
}
-static void setcontrast(struct gspca_dev *gspca_dev)
+static void setcontrast(struct gspca_dev *gspca_dev, s32 val)
{
- struct sd *sd = (struct sd *) gspca_dev;
-
reg_w(gspca_dev, 0xff, 0x04);
- reg_w(gspca_dev, 0x10, sd->ctrls[CONTRAST].val);
+ reg_w(gspca_dev, 0x10, val);
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0x11, 0x01);
}
-static void setgain(struct gspca_dev *gspca_dev)
+static void setgain(struct gspca_dev *gspca_dev, s32 val)
{
- struct sd *sd = (struct sd *) gspca_dev;
-
reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
reg_w(gspca_dev, 0x0e, 0x00);
- reg_w(gspca_dev, 0x0f, sd->ctrls[GAIN].max - sd->ctrls[GAIN].val + 1);
+ reg_w(gspca_dev, 0x0f, gspca_dev->gain->maximum - val + 1);
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0x11, 0x01);
}
-static void setexposure(struct gspca_dev *gspca_dev)
+static void setexposure(struct gspca_dev *gspca_dev, s32 val)
{
- struct sd *sd = (struct sd *) gspca_dev;
-
reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
- reg_w(gspca_dev, 0x02, sd->ctrls[EXPOSURE].val);
+ reg_w(gspca_dev, 0x02, val);
/* load registers to sensor (Bit 0, auto clear) */
reg_w(gspca_dev, 0x11, 0x01);
* 640x480 mode and page 4 reg 2 <= 3 then it must be 9
*/
reg_w(gspca_dev, 0xff, 0x01);
- if (gspca_dev->width != 640 && sd->ctrls[EXPOSURE].val <= 3)
+ if (gspca_dev->width != 640 && val <= 3)
reg_w(gspca_dev, 0x08, 0x09);
else
reg_w(gspca_dev, 0x08, 0x08);
* camera to use higher compression or we may run out of
* bandwidth.
*/
- if (gspca_dev->width == 640 && sd->ctrls[EXPOSURE].val == 2)
+ if (gspca_dev->width == 640 && val == 2)
reg_w(gspca_dev, 0x80, 0x01);
else
reg_w(gspca_dev, 0x80, 0x1c);
reg_w(gspca_dev, 0x11, 0x01);
}
-static void sethvflip(struct gspca_dev *gspca_dev)
+static void sethvflip(struct gspca_dev *gspca_dev, s32 hflip, s32 vflip)
{
- struct sd *sd = (struct sd *) gspca_dev;
__u8 data;
reg_w(gspca_dev, 0xff, 0x04); /* page 4 */
- data = (sd->ctrls[HFLIP].val ? 0x04 : 0x00) |
- (sd->ctrls[VFLIP].val ? 0x08 : 0x00);
+ data = (hflip ? 0x04 : 0x00) |
+ (vflip ? 0x08 : 0x00);
reg_w(gspca_dev, 0x21, data);
/* load registers to sensor (Bit 0, auto clear) */
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 = PAC7311_EXPOSURE_DEFAULT;
+ gspca_dev->gain->val = PAC7311_GAIN_DEFAULT;
+ sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
+ }
+
+ if (!gspca_dev->streaming)
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_CONTRAST:
+ setcontrast(gspca_dev, ctrl->val);
+ break;
+ case V4L2_CID_AUTOGAIN:
+ if (gspca_dev->exposure->is_new || (ctrl->is_new && ctrl->val))
+ setexposure(gspca_dev, gspca_dev->exposure->val);
+ if (gspca_dev->gain->is_new || (ctrl->is_new && ctrl->val))
+ setgain(gspca_dev, gspca_dev->gain->val);
+ break;
+ case V4L2_CID_HFLIP:
+ sethvflip(gspca_dev, sd->hflip->val, sd->vflip->val);
+ 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, 4);
+
+ sd->contrast = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_CONTRAST, 0, 15, 1, 7);
+ 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, 2, 63, 1,
+ PAC7311_EXPOSURE_DEFAULT);
+ gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
+ V4L2_CID_GAIN, 0, 244, 1,
+ PAC7311_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_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;
reg_w_var(gspca_dev, start_7311,
page4_7311, sizeof(page4_7311));
- setcontrast(gspca_dev);
- setgain(gspca_dev);
- setexposure(gspca_dev);
- sethvflip(gspca_dev);
+ setcontrast(gspca_dev, v4l2_ctrl_g_ctrl(sd->contrast));
+ setgain(gspca_dev, v4l2_ctrl_g_ctrl(gspca_dev->gain));
+ setexposure(gspca_dev, v4l2_ctrl_g_ctrl(gspca_dev->exposure));
+ sethvflip(gspca_dev, v4l2_ctrl_g_ctrl(sd->hflip),
+ v4l2_ctrl_g_ctrl(sd->vflip));
/* set correct resolution */
switch (gspca_dev->cam.cam_mode[(int) gspca_dev->curr_mode].priv) {
reg_w(gspca_dev, 0x78, 0x44); /* Bit_0=start stream, Bit_6=LED */
}
-#define WANT_COARSE_EXPO_AUTOGAIN
-#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);
int desired_lum, deadzone;
- if (sd->ctrls[AUTOGAIN].val == 0 || avg_lum == -1)
+ if (avg_lum == -1)
return;
desired_lum = 200;
if (sd->autogain_ignore_frames > 0)
sd->autogain_ignore_frames--;
- else if (coarse_grained_expo_autogain(gspca_dev, avg_lum, desired_lum,
- deadzone))
+ else if (gspca_coarse_grained_expo_autogain(gspca_dev, avg_lum,
+ desired_lum, deadzone))
sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
}
static const struct sd_desc sd_desc = {
.name = MODULE_NAME,
- .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,
.pkt_scan = sd_pkt_scan,
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