diff options
| -rw-r--r-- | drivers/media/video/gspca/pac7311.c | 234 |
1 files changed, 108 insertions, 126 deletions
diff --git a/drivers/media/video/gspca/pac7311.c b/drivers/media/video/gspca/pac7311.c index 5ccf0b41ffc..a07c0893a54 100644 --- a/drivers/media/video/gspca/pac7311.c +++ b/drivers/media/video/gspca/pac7311.c @@ -64,25 +64,21 @@ /* 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; @@ -90,86 +86,6 @@ struct sd { 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, @@ -371,45 +287,36 @@ static void reg_w_var(struct gspca_dev *gspca_dev, 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); @@ -419,7 +326,7 @@ static void setexposure(struct gspca_dev *gspca_dev) * 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); @@ -430,7 +337,7 @@ static void setexposure(struct gspca_dev *gspca_dev) * 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); @@ -439,14 +346,13 @@ static void setexposure(struct gspca_dev *gspca_dev) 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) */ @@ -460,6 +366,85 @@ static int sd_init(struct gspca_dev *gspca_dev) 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; @@ -468,10 +453,11 @@ static int sd_start(struct gspca_dev *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) { @@ -517,16 +503,13 @@ static void sd_stopN(struct gspca_dev *gspca_dev) 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; @@ -534,8 +517,8 @@ static void do_autogain(struct gspca_dev *gspca_dev) 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; } @@ -674,10 +657,9 @@ static int sd_int_pkt_scan(struct gspca_dev *gspca_dev, 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, |