forked from Minki/linux
[media] gspca_pac207: Convert to the control framework
Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans de Goede
Mauro Carvalho Chehab
parent
cb0988cb82
commit
cd92c1a6d9
@ -29,6 +29,8 @@
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#include <linux/input.h>
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#include "gspca.h"
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/* Include pac common sof detection functions */
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#include "pac_common.h"
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MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
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MODULE_DESCRIPTION("Pixart PAC207");
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@ -39,16 +41,19 @@ MODULE_LICENSE("GPL");
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#define PAC207_BRIGHTNESS_MIN 0
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#define PAC207_BRIGHTNESS_MAX 255
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#define PAC207_BRIGHTNESS_DEFAULT 46
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#define PAC207_BRIGHTNESS_REG 0x08
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#define PAC207_EXPOSURE_MIN 3
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#define PAC207_EXPOSURE_MAX 90 /* 1 sec expo time / 1 fps */
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#define PAC207_EXPOSURE_DEFAULT 5 /* power on default: 3 */
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#define PAC207_EXPOSURE_KNEE 9 /* fps: 90 / exposure -> 9: 10 fps */
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#define PAC207_EXPOSURE_REG 0x02
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#define PAC207_GAIN_MIN 0
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#define PAC207_GAIN_MAX 31
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#define PAC207_GAIN_DEFAULT 7 /* power on default: 9 */
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#define PAC207_GAIN_KNEE 15
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#define PAC207_GAIN_REG 0x0e
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#define PAC207_AUTOGAIN_DEADZONE 30
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@ -56,13 +61,9 @@ MODULE_LICENSE("GPL");
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struct sd {
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struct gspca_dev gspca_dev; /* !! must be the first item */
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struct v4l2_ctrl *brightness;
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u8 mode;
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u8 brightness;
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u8 exposure;
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u8 autogain;
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u8 gain;
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u8 sof_read;
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u8 header_read;
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u8 autogain_ignore_frames;
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@ -70,80 +71,6 @@ struct sd {
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atomic_t avg_lum;
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};
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/* V4L2 controls supported by the driver */
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static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val);
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static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val);
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static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val);
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static const struct ctrl sd_ctrls[] = {
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#define SD_BRIGHTNESS 0
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{
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{
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.id = V4L2_CID_BRIGHTNESS,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Brightness",
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.minimum = PAC207_BRIGHTNESS_MIN,
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.maximum = PAC207_BRIGHTNESS_MAX,
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.step = 1,
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.default_value = PAC207_BRIGHTNESS_DEFAULT,
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.flags = 0,
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},
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.set = sd_setbrightness,
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.get = sd_getbrightness,
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},
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#define SD_EXPOSURE 1
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{
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{
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.id = V4L2_CID_EXPOSURE,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Exposure",
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.minimum = PAC207_EXPOSURE_MIN,
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.maximum = PAC207_EXPOSURE_MAX,
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.step = 1,
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.default_value = PAC207_EXPOSURE_DEFAULT,
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.flags = 0,
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},
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.set = sd_setexposure,
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.get = sd_getexposure,
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},
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#define SD_AUTOGAIN 2
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{
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{
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.id = V4L2_CID_AUTOGAIN,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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.name = "Auto Gain",
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.minimum = 0,
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.maximum = 1,
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.step = 1,
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#define AUTOGAIN_DEF 1
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.default_value = AUTOGAIN_DEF,
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.flags = 0,
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},
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.set = sd_setautogain,
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.get = sd_getautogain,
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},
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#define SD_GAIN 3
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{
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{
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.id = V4L2_CID_GAIN,
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.type = V4L2_CTRL_TYPE_INTEGER,
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.name = "Gain",
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.minimum = PAC207_GAIN_MIN,
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.maximum = PAC207_GAIN_MAX,
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.step = 1,
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.default_value = PAC207_GAIN_DEFAULT,
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.flags = 0,
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},
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.set = sd_setgain,
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.get = sd_getgain,
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},
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};
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static const struct v4l2_pix_format sif_mode[] = {
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{176, 144, V4L2_PIX_FMT_PAC207, V4L2_FIELD_NONE,
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.bytesperline = 176,
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@ -233,7 +160,6 @@ static int pac207_read_reg(struct gspca_dev *gspca_dev, u16 index)
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static int sd_config(struct gspca_dev *gspca_dev,
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const struct usb_device_id *id)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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struct cam *cam;
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u8 idreg[2];
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@ -256,10 +182,6 @@ static int sd_config(struct gspca_dev *gspca_dev,
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cam = &gspca_dev->cam;
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cam->cam_mode = sif_mode;
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cam->nmodes = ARRAY_SIZE(sif_mode);
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sd->brightness = PAC207_BRIGHTNESS_DEFAULT;
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sd->exposure = PAC207_EXPOSURE_DEFAULT;
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sd->gain = PAC207_GAIN_DEFAULT;
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sd->autogain = AUTOGAIN_DEF;
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return 0;
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}
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@ -276,6 +198,87 @@ static int sd_init(struct gspca_dev *gspca_dev)
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return gspca_dev->usb_err;
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}
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static void setcontrol(struct gspca_dev *gspca_dev, u16 reg, u16 val)
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{
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pac207_write_reg(gspca_dev, reg, val);
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pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
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pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
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}
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static int sd_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct gspca_dev *gspca_dev =
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container_of(ctrl->handler, struct gspca_dev, ctrl_handler);
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struct sd *sd = (struct sd *)gspca_dev;
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gspca_dev->usb_err = 0;
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if (ctrl->id == V4L2_CID_AUTOGAIN && ctrl->is_new && ctrl->val) {
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/* when switching to autogain set defaults to make sure
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we are on a valid point of the autogain gain /
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exposure knee graph, and give this change time to
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take effect before doing autogain. */
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gspca_dev->exposure->val = PAC207_EXPOSURE_DEFAULT;
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gspca_dev->gain->val = PAC207_GAIN_DEFAULT;
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sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
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}
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if (!gspca_dev->streaming)
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return 0;
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switch (ctrl->id) {
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case V4L2_CID_BRIGHTNESS:
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setcontrol(gspca_dev, PAC207_BRIGHTNESS_REG, ctrl->val);
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break;
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case V4L2_CID_AUTOGAIN:
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if (gspca_dev->exposure->is_new || (ctrl->is_new && ctrl->val))
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setcontrol(gspca_dev, PAC207_EXPOSURE_REG,
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gspca_dev->exposure->val);
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if (gspca_dev->gain->is_new || (ctrl->is_new && ctrl->val))
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setcontrol(gspca_dev, PAC207_GAIN_REG,
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gspca_dev->gain->val);
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break;
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default:
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return -EINVAL;
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}
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return gspca_dev->usb_err;
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}
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static const struct v4l2_ctrl_ops sd_ctrl_ops = {
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.s_ctrl = sd_s_ctrl,
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};
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/* this function is called at probe time */
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static int sd_init_controls(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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struct v4l2_ctrl_handler *hdl = &gspca_dev->ctrl_handler;
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gspca_dev->vdev.ctrl_handler = hdl;
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v4l2_ctrl_handler_init(hdl, 4);
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sd->brightness = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
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V4L2_CID_BRIGHTNESS,
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PAC207_BRIGHTNESS_MIN, PAC207_BRIGHTNESS_MAX,
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1, PAC207_BRIGHTNESS_DEFAULT);
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gspca_dev->autogain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
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V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
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gspca_dev->exposure = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
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V4L2_CID_EXPOSURE,
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PAC207_EXPOSURE_MIN, PAC207_EXPOSURE_MAX,
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1, PAC207_EXPOSURE_DEFAULT);
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gspca_dev->gain = v4l2_ctrl_new_std(hdl, &sd_ctrl_ops,
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V4L2_CID_GAIN,
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PAC207_GAIN_MIN, PAC207_GAIN_MAX,
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1, PAC207_GAIN_DEFAULT);
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if (hdl->error) {
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pr_err("Could not initialize controls\n");
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return hdl->error;
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}
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v4l2_ctrl_auto_cluster(3, &gspca_dev->autogain, 0, false);
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return 0;
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}
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/* -- start the camera -- */
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static int sd_start(struct gspca_dev *gspca_dev)
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{
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@ -294,11 +297,13 @@ static int sd_start(struct gspca_dev *gspca_dev)
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else
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pac207_write_reg(gspca_dev, 0x4a, 0x30);
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pac207_write_reg(gspca_dev, 0x4b, 0x00); /* Sram test value */
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pac207_write_reg(gspca_dev, 0x08, sd->brightness);
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pac207_write_reg(gspca_dev, 0x08, v4l2_ctrl_g_ctrl(sd->brightness));
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/* PGA global gain (Bit 4-0) */
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pac207_write_reg(gspca_dev, 0x0e, sd->gain);
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pac207_write_reg(gspca_dev, 0x02, sd->exposure); /* PXCK = 12MHz /n */
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pac207_write_reg(gspca_dev, 0x0e,
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v4l2_ctrl_g_ctrl(gspca_dev->gain));
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pac207_write_reg(gspca_dev, 0x02,
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v4l2_ctrl_g_ctrl(gspca_dev->exposure)); /* PXCK = 12MHz /n */
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mode = 0x02; /* Image Format (Bit 0), LED (1), Compr. test mode (2) */
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if (gspca_dev->width == 176) { /* 176x144 */
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@ -327,8 +332,6 @@ static void sd_stopN(struct gspca_dev *gspca_dev)
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pac207_write_reg(gspca_dev, 0x0f, 0x00); /* Power Control */
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}
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/* Include pac common sof detection functions */
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#include "pac_common.h"
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static void pac207_do_auto_gain(struct gspca_dev *gspca_dev)
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{
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@ -340,7 +343,7 @@ static void pac207_do_auto_gain(struct gspca_dev *gspca_dev)
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if (sd->autogain_ignore_frames > 0)
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sd->autogain_ignore_frames--;
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else if (gspca_auto_gain_n_exposure(gspca_dev, avg_lum,
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else if (gspca_expo_autogain(gspca_dev, avg_lum,
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90, PAC207_AUTOGAIN_DEADZONE,
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PAC207_GAIN_KNEE, PAC207_EXPOSURE_KNEE))
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sd->autogain_ignore_frames = PAC_AUTOGAIN_IGNORE_FRAMES;
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@ -393,118 +396,6 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
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gspca_frame_add(gspca_dev, INTER_PACKET, data, len);
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}
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static void setbrightness(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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pac207_write_reg(gspca_dev, 0x08, sd->brightness);
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pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
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pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
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}
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static void setexposure(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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pac207_write_reg(gspca_dev, 0x02, sd->exposure);
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pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
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pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
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}
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static void setgain(struct gspca_dev *gspca_dev)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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pac207_write_reg(gspca_dev, 0x0e, sd->gain);
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pac207_write_reg(gspca_dev, 0x13, 0x01); /* Bit 0, auto clear */
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pac207_write_reg(gspca_dev, 0x1c, 0x01); /* not documented */
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}
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static int sd_setbrightness(struct gspca_dev *gspca_dev, __s32 val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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sd->brightness = val;
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if (gspca_dev->streaming)
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setbrightness(gspca_dev);
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return 0;
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}
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static int sd_getbrightness(struct gspca_dev *gspca_dev, __s32 *val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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*val = sd->brightness;
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return 0;
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}
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static int sd_setexposure(struct gspca_dev *gspca_dev, __s32 val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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sd->exposure = val;
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if (gspca_dev->streaming)
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setexposure(gspca_dev);
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return 0;
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}
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static int sd_getexposure(struct gspca_dev *gspca_dev, __s32 *val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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*val = sd->exposure;
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return 0;
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}
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static int sd_setgain(struct gspca_dev *gspca_dev, __s32 val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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sd->gain = val;
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if (gspca_dev->streaming)
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setgain(gspca_dev);
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return 0;
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}
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static int sd_getgain(struct gspca_dev *gspca_dev, __s32 *val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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*val = sd->gain;
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return 0;
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}
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static int sd_setautogain(struct gspca_dev *gspca_dev, __s32 val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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sd->autogain = val;
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/* when switching to autogain set defaults to make sure
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we are on a valid point of the autogain gain /
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exposure knee graph, and give this change time to
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take effect before doing autogain. */
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if (sd->autogain) {
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sd->exposure = PAC207_EXPOSURE_DEFAULT;
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sd->gain = PAC207_GAIN_DEFAULT;
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if (gspca_dev->streaming) {
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sd->autogain_ignore_frames =
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PAC_AUTOGAIN_IGNORE_FRAMES;
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setexposure(gspca_dev);
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setgain(gspca_dev);
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}
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}
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return 0;
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}
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static int sd_getautogain(struct gspca_dev *gspca_dev, __s32 *val)
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{
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struct sd *sd = (struct sd *) gspca_dev;
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*val = sd->autogain;
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return 0;
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}
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#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
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static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
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u8 *data, /* interrupt packet data */
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@ -527,10 +418,9 @@ static int sd_int_pkt_scan(struct gspca_dev *gspca_dev,
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/* sub-driver description */
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static const struct sd_desc sd_desc = {
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.name = MODULE_NAME,
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.ctrls = sd_ctrls,
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.nctrls = ARRAY_SIZE(sd_ctrls),
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.config = sd_config,
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.init = sd_init,
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.init_controls = sd_init_controls,
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.start = sd_start,
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.stopN = sd_stopN,
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.dq_callback = pac207_do_auto_gain,
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