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linux/linux-5.4.31/drivers/media/usb/pwc/pwc-v4l.c

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// SPDX-License-Identifier: GPL-2.0-or-later
/* Linux driver for Philips webcam
USB and Video4Linux interface part.
(C) 1999-2004 Nemosoft Unv.
(C) 2004-2006 Luc Saillard (luc@saillard.org)
(C) 2011 Hans de Goede <hdegoede@redhat.com>
NOTE: this version of pwc is an unofficial (modified) release of pwc & pcwx
driver and thus may have bugs that are not present in the original version.
Please send bug reports and support requests to <luc@saillard.org>.
The decompression routines have been implemented by reverse-engineering the
Nemosoft binary pwcx module. Caveat emptor.
*/
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/poll.h>
#include <linux/vmalloc.h>
#include <linux/jiffies.h>
#include <asm/io.h>
#include "pwc.h"
#define PWC_CID_CUSTOM(ctrl) ((V4L2_CID_USER_BASE | 0xf000) + custom_ ## ctrl)
static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl);
static int pwc_s_ctrl(struct v4l2_ctrl *ctrl);
static const struct v4l2_ctrl_ops pwc_ctrl_ops = {
.g_volatile_ctrl = pwc_g_volatile_ctrl,
.s_ctrl = pwc_s_ctrl,
};
enum { awb_indoor, awb_outdoor, awb_fl, awb_manual, awb_auto };
enum { custom_autocontour, custom_contour, custom_noise_reduction,
custom_awb_speed, custom_awb_delay,
custom_save_user, custom_restore_user, custom_restore_factory };
static const char * const pwc_auto_whitebal_qmenu[] = {
"Indoor (Incandescant Lighting) Mode",
"Outdoor (Sunlight) Mode",
"Indoor (Fluorescent Lighting) Mode",
"Manual Mode",
"Auto Mode",
NULL
};
static const struct v4l2_ctrl_config pwc_auto_white_balance_cfg = {
.ops = &pwc_ctrl_ops,
.id = V4L2_CID_AUTO_WHITE_BALANCE,
.type = V4L2_CTRL_TYPE_MENU,
.max = awb_auto,
.qmenu = pwc_auto_whitebal_qmenu,
};
static const struct v4l2_ctrl_config pwc_autocontour_cfg = {
.ops = &pwc_ctrl_ops,
.id = PWC_CID_CUSTOM(autocontour),
.type = V4L2_CTRL_TYPE_BOOLEAN,
.name = "Auto contour",
.min = 0,
.max = 1,
.step = 1,
};
static const struct v4l2_ctrl_config pwc_contour_cfg = {
.ops = &pwc_ctrl_ops,
.id = PWC_CID_CUSTOM(contour),
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Contour",
.flags = V4L2_CTRL_FLAG_SLIDER,
.min = 0,
.max = 63,
.step = 1,
};
static const struct v4l2_ctrl_config pwc_backlight_cfg = {
.ops = &pwc_ctrl_ops,
.id = V4L2_CID_BACKLIGHT_COMPENSATION,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.min = 0,
.max = 1,
.step = 1,
};
static const struct v4l2_ctrl_config pwc_flicker_cfg = {
.ops = &pwc_ctrl_ops,
.id = V4L2_CID_BAND_STOP_FILTER,
.type = V4L2_CTRL_TYPE_BOOLEAN,
.min = 0,
.max = 1,
.step = 1,
};
static const struct v4l2_ctrl_config pwc_noise_reduction_cfg = {
.ops = &pwc_ctrl_ops,
.id = PWC_CID_CUSTOM(noise_reduction),
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Dynamic Noise Reduction",
.min = 0,
.max = 3,
.step = 1,
};
static const struct v4l2_ctrl_config pwc_save_user_cfg = {
.ops = &pwc_ctrl_ops,
.id = PWC_CID_CUSTOM(save_user),
.type = V4L2_CTRL_TYPE_BUTTON,
.name = "Save User Settings",
};
static const struct v4l2_ctrl_config pwc_restore_user_cfg = {
.ops = &pwc_ctrl_ops,
.id = PWC_CID_CUSTOM(restore_user),
.type = V4L2_CTRL_TYPE_BUTTON,
.name = "Restore User Settings",
};
static const struct v4l2_ctrl_config pwc_restore_factory_cfg = {
.ops = &pwc_ctrl_ops,
.id = PWC_CID_CUSTOM(restore_factory),
.type = V4L2_CTRL_TYPE_BUTTON,
.name = "Restore Factory Settings",
};
static const struct v4l2_ctrl_config pwc_awb_speed_cfg = {
.ops = &pwc_ctrl_ops,
.id = PWC_CID_CUSTOM(awb_speed),
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Auto White Balance Speed",
.min = 1,
.max = 32,
.step = 1,
};
static const struct v4l2_ctrl_config pwc_awb_delay_cfg = {
.ops = &pwc_ctrl_ops,
.id = PWC_CID_CUSTOM(awb_delay),
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Auto White Balance Delay",
.min = 0,
.max = 63,
.step = 1,
};
int pwc_init_controls(struct pwc_device *pdev)
{
struct v4l2_ctrl_handler *hdl;
struct v4l2_ctrl_config cfg;
int r, def;
hdl = &pdev->ctrl_handler;
r = v4l2_ctrl_handler_init(hdl, 20);
if (r)
return r;
/* Brightness, contrast, saturation, gamma */
r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, BRIGHTNESS_FORMATTER, &def);
if (r || def > 127)
def = 63;
pdev->brightness = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
V4L2_CID_BRIGHTNESS, 0, 127, 1, def);
r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, CONTRAST_FORMATTER, &def);
if (r || def > 63)
def = 31;
pdev->contrast = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
V4L2_CID_CONTRAST, 0, 63, 1, def);
if (pdev->type >= 675) {
if (pdev->type < 730)
pdev->saturation_fmt = SATURATION_MODE_FORMATTER2;
else
pdev->saturation_fmt = SATURATION_MODE_FORMATTER1;
r = pwc_get_s8_ctrl(pdev, GET_CHROM_CTL, pdev->saturation_fmt,
&def);
if (r || def < -100 || def > 100)
def = 0;
pdev->saturation = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
V4L2_CID_SATURATION, -100, 100, 1, def);
}
r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, GAMMA_FORMATTER, &def);
if (r || def > 31)
def = 15;
pdev->gamma = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
V4L2_CID_GAMMA, 0, 31, 1, def);
/* auto white balance, red gain, blue gain */
r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL, WB_MODE_FORMATTER, &def);
if (r || def > awb_auto)
def = awb_auto;
cfg = pwc_auto_white_balance_cfg;
cfg.name = v4l2_ctrl_get_name(cfg.id);
cfg.def = def;
pdev->auto_white_balance = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
/* check auto controls to avoid NULL deref in v4l2_ctrl_auto_cluster */
if (!pdev->auto_white_balance)
return hdl->error;
r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL,
PRESET_MANUAL_RED_GAIN_FORMATTER, &def);
if (r)
def = 127;
pdev->red_balance = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
V4L2_CID_RED_BALANCE, 0, 255, 1, def);
r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL,
PRESET_MANUAL_BLUE_GAIN_FORMATTER, &def);
if (r)
def = 127;
pdev->blue_balance = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
V4L2_CID_BLUE_BALANCE, 0, 255, 1, def);
v4l2_ctrl_auto_cluster(3, &pdev->auto_white_balance, awb_manual, true);
/* autogain, gain */
r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, AGC_MODE_FORMATTER, &def);
if (r || (def != 0 && def != 0xff))
def = 0;
/* Note a register value if 0 means auto gain is on */
pdev->autogain = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
V4L2_CID_AUTOGAIN, 0, 1, 1, def == 0);
if (!pdev->autogain)
return hdl->error;
r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, PRESET_AGC_FORMATTER, &def);
if (r || def > 63)
def = 31;
pdev->gain = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
V4L2_CID_GAIN, 0, 63, 1, def);
/* auto exposure, exposure */
if (DEVICE_USE_CODEC2(pdev->type)) {
r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, SHUTTER_MODE_FORMATTER,
&def);
if (r || (def != 0 && def != 0xff))
def = 0;
/*
* def = 0 auto, def = ff manual
* menu idx 0 = auto, idx 1 = manual
*/
pdev->exposure_auto = v4l2_ctrl_new_std_menu(hdl,
&pwc_ctrl_ops,
V4L2_CID_EXPOSURE_AUTO,
1, 0, def != 0);
if (!pdev->exposure_auto)
return hdl->error;
/* GET_LUM_CTL, PRESET_SHUTTER_FORMATTER is unreliable */
r = pwc_get_u16_ctrl(pdev, GET_STATUS_CTL,
READ_SHUTTER_FORMATTER, &def);
if (r || def > 655)
def = 655;
pdev->exposure = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
V4L2_CID_EXPOSURE, 0, 655, 1, def);
/* CODEC2: separate auto gain & auto exposure */
v4l2_ctrl_auto_cluster(2, &pdev->autogain, 0, true);
v4l2_ctrl_auto_cluster(2, &pdev->exposure_auto,
V4L2_EXPOSURE_MANUAL, true);
} else if (DEVICE_USE_CODEC3(pdev->type)) {
/* GET_LUM_CTL, PRESET_SHUTTER_FORMATTER is unreliable */
r = pwc_get_u16_ctrl(pdev, GET_STATUS_CTL,
READ_SHUTTER_FORMATTER, &def);
if (r || def > 255)
def = 255;
pdev->exposure = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
V4L2_CID_EXPOSURE, 0, 255, 1, def);
/* CODEC3: both gain and exposure controlled by autogain */
pdev->autogain_expo_cluster[0] = pdev->autogain;
pdev->autogain_expo_cluster[1] = pdev->gain;
pdev->autogain_expo_cluster[2] = pdev->exposure;
v4l2_ctrl_auto_cluster(3, pdev->autogain_expo_cluster,
0, true);
}
/* color / bw setting */
r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL, COLOUR_MODE_FORMATTER,
&def);
if (r || (def != 0 && def != 0xff))
def = 0xff;
/* def = 0 bw, def = ff color, menu idx 0 = color, idx 1 = bw */
pdev->colorfx = v4l2_ctrl_new_std_menu(hdl, &pwc_ctrl_ops,
V4L2_CID_COLORFX, 1, 0, def == 0);
/* autocontour, contour */
r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, AUTO_CONTOUR_FORMATTER, &def);
if (r || (def != 0 && def != 0xff))
def = 0;
cfg = pwc_autocontour_cfg;
cfg.def = def == 0;
pdev->autocontour = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
if (!pdev->autocontour)
return hdl->error;
r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL, PRESET_CONTOUR_FORMATTER, &def);
if (r || def > 63)
def = 31;
cfg = pwc_contour_cfg;
cfg.def = def;
pdev->contour = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
v4l2_ctrl_auto_cluster(2, &pdev->autocontour, 0, false);
/* backlight */
r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL,
BACK_LIGHT_COMPENSATION_FORMATTER, &def);
if (r || (def != 0 && def != 0xff))
def = 0;
cfg = pwc_backlight_cfg;
cfg.name = v4l2_ctrl_get_name(cfg.id);
cfg.def = def == 0;
pdev->backlight = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
/* flikker rediction */
r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL,
FLICKERLESS_MODE_FORMATTER, &def);
if (r || (def != 0 && def != 0xff))
def = 0;
cfg = pwc_flicker_cfg;
cfg.name = v4l2_ctrl_get_name(cfg.id);
cfg.def = def == 0;
pdev->flicker = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
/* Dynamic noise reduction */
r = pwc_get_u8_ctrl(pdev, GET_LUM_CTL,
DYNAMIC_NOISE_CONTROL_FORMATTER, &def);
if (r || def > 3)
def = 2;
cfg = pwc_noise_reduction_cfg;
cfg.def = def;
pdev->noise_reduction = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
/* Save / Restore User / Factory Settings */
pdev->save_user = v4l2_ctrl_new_custom(hdl, &pwc_save_user_cfg, NULL);
pdev->restore_user = v4l2_ctrl_new_custom(hdl, &pwc_restore_user_cfg,
NULL);
if (pdev->restore_user)
pdev->restore_user->flags |= V4L2_CTRL_FLAG_UPDATE;
pdev->restore_factory = v4l2_ctrl_new_custom(hdl,
&pwc_restore_factory_cfg,
NULL);
if (pdev->restore_factory)
pdev->restore_factory->flags |= V4L2_CTRL_FLAG_UPDATE;
/* Auto White Balance speed & delay */
r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL,
AWB_CONTROL_SPEED_FORMATTER, &def);
if (r || def < 1 || def > 32)
def = 1;
cfg = pwc_awb_speed_cfg;
cfg.def = def;
pdev->awb_speed = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
r = pwc_get_u8_ctrl(pdev, GET_CHROM_CTL,
AWB_CONTROL_DELAY_FORMATTER, &def);
if (r || def > 63)
def = 0;
cfg = pwc_awb_delay_cfg;
cfg.def = def;
pdev->awb_delay = v4l2_ctrl_new_custom(hdl, &cfg, NULL);
if (!(pdev->features & FEATURE_MOTOR_PANTILT))
return hdl->error;
/* Motor pan / tilt / reset */
pdev->motor_pan = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
V4L2_CID_PAN_RELATIVE, -4480, 4480, 64, 0);
if (!pdev->motor_pan)
return hdl->error;
pdev->motor_tilt = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
V4L2_CID_TILT_RELATIVE, -1920, 1920, 64, 0);
pdev->motor_pan_reset = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
V4L2_CID_PAN_RESET, 0, 0, 0, 0);
pdev->motor_tilt_reset = v4l2_ctrl_new_std(hdl, &pwc_ctrl_ops,
V4L2_CID_TILT_RESET, 0, 0, 0, 0);
v4l2_ctrl_cluster(4, &pdev->motor_pan);
return hdl->error;
}
static void pwc_vidioc_fill_fmt(struct v4l2_format *f,
int width, int height, u32 pixfmt)
{
memset(&f->fmt.pix, 0, sizeof(struct v4l2_pix_format));
f->fmt.pix.width = width;
f->fmt.pix.height = height;
f->fmt.pix.field = V4L2_FIELD_NONE;
f->fmt.pix.pixelformat = pixfmt;
f->fmt.pix.bytesperline = f->fmt.pix.width;
f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.width * 3 / 2;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
PWC_DEBUG_IOCTL("pwc_vidioc_fill_fmt() width=%d, height=%d, bytesperline=%d, sizeimage=%d, pixelformat=%c%c%c%c\n",
f->fmt.pix.width,
f->fmt.pix.height,
f->fmt.pix.bytesperline,
f->fmt.pix.sizeimage,
(f->fmt.pix.pixelformat)&255,
(f->fmt.pix.pixelformat>>8)&255,
(f->fmt.pix.pixelformat>>16)&255,
(f->fmt.pix.pixelformat>>24)&255);
}
/* ioctl(VIDIOC_TRY_FMT) */
static int pwc_vidioc_try_fmt(struct pwc_device *pdev, struct v4l2_format *f)
{
int size;
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) {
PWC_DEBUG_IOCTL("Bad video type must be V4L2_BUF_TYPE_VIDEO_CAPTURE\n");
return -EINVAL;
}
switch (f->fmt.pix.pixelformat) {
case V4L2_PIX_FMT_YUV420:
break;
case V4L2_PIX_FMT_PWC1:
if (DEVICE_USE_CODEC23(pdev->type)) {
PWC_DEBUG_IOCTL("codec1 is only supported for old pwc webcam\n");
f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420;
}
break;
case V4L2_PIX_FMT_PWC2:
if (DEVICE_USE_CODEC1(pdev->type)) {
PWC_DEBUG_IOCTL("codec23 is only supported for new pwc webcam\n");
f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420;
}
break;
default:
PWC_DEBUG_IOCTL("Unsupported pixel format\n");
f->fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420;
}
size = pwc_get_size(pdev, f->fmt.pix.width, f->fmt.pix.height);
pwc_vidioc_fill_fmt(f,
pwc_image_sizes[size][0],
pwc_image_sizes[size][1],
f->fmt.pix.pixelformat);
return 0;
}
/* ioctl(VIDIOC_SET_FMT) */
static int pwc_s_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
{
struct pwc_device *pdev = video_drvdata(file);
int ret, pixelformat, compression = 0;
ret = pwc_vidioc_try_fmt(pdev, f);
if (ret < 0)
return ret;
if (vb2_is_busy(&pdev->vb_queue))
return -EBUSY;
pixelformat = f->fmt.pix.pixelformat;
PWC_DEBUG_IOCTL("Trying to set format to: width=%d height=%d fps=%d format=%c%c%c%c\n",
f->fmt.pix.width, f->fmt.pix.height, pdev->vframes,
(pixelformat)&255,
(pixelformat>>8)&255,
(pixelformat>>16)&255,
(pixelformat>>24)&255);
ret = pwc_set_video_mode(pdev, f->fmt.pix.width, f->fmt.pix.height,
pixelformat, 30, &compression, 0);
PWC_DEBUG_IOCTL("pwc_set_video_mode(), return=%d\n", ret);
pwc_vidioc_fill_fmt(f, pdev->width, pdev->height, pdev->pixfmt);
return ret;
}
static int pwc_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
{
struct pwc_device *pdev = video_drvdata(file);
strscpy(cap->driver, PWC_NAME, sizeof(cap->driver));
strscpy(cap->card, pdev->vdev.name, sizeof(cap->card));
usb_make_path(pdev->udev, cap->bus_info, sizeof(cap->bus_info));
return 0;
}
static int pwc_enum_input(struct file *file, void *fh, struct v4l2_input *i)
{
if (i->index) /* Only one INPUT is supported */
return -EINVAL;
strscpy(i->name, "Camera", sizeof(i->name));
i->type = V4L2_INPUT_TYPE_CAMERA;
return 0;
}
static int pwc_g_input(struct file *file, void *fh, unsigned int *i)
{
*i = 0;
return 0;
}
static int pwc_s_input(struct file *file, void *fh, unsigned int i)
{
return i ? -EINVAL : 0;
}
static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct pwc_device *pdev =
container_of(ctrl->handler, struct pwc_device, ctrl_handler);
int ret = 0;
switch (ctrl->id) {
case V4L2_CID_AUTO_WHITE_BALANCE:
if (pdev->color_bal_valid &&
(pdev->auto_white_balance->val != awb_auto ||
time_before(jiffies,
pdev->last_color_bal_update + HZ / 4))) {
pdev->red_balance->val = pdev->last_red_balance;
pdev->blue_balance->val = pdev->last_blue_balance;
break;
}
ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
READ_RED_GAIN_FORMATTER,
&pdev->red_balance->val);
if (ret)
break;
ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
READ_BLUE_GAIN_FORMATTER,
&pdev->blue_balance->val);
if (ret)
break;
pdev->last_red_balance = pdev->red_balance->val;
pdev->last_blue_balance = pdev->blue_balance->val;
pdev->last_color_bal_update = jiffies;
pdev->color_bal_valid = true;
break;
case V4L2_CID_AUTOGAIN:
if (pdev->gain_valid && time_before(jiffies,
pdev->last_gain_update + HZ / 4)) {
pdev->gain->val = pdev->last_gain;
break;
}
ret = pwc_get_u8_ctrl(pdev, GET_STATUS_CTL,
READ_AGC_FORMATTER, &pdev->gain->val);
if (ret)
break;
pdev->last_gain = pdev->gain->val;
pdev->last_gain_update = jiffies;
pdev->gain_valid = true;
if (!DEVICE_USE_CODEC3(pdev->type))
break;
/* For CODEC3 where autogain also controls expo */
/* fall through */
case V4L2_CID_EXPOSURE_AUTO:
if (pdev->exposure_valid && time_before(jiffies,
pdev->last_exposure_update + HZ / 4)) {
pdev->exposure->val = pdev->last_exposure;
break;
}
ret = pwc_get_u16_ctrl(pdev, GET_STATUS_CTL,
READ_SHUTTER_FORMATTER,
&pdev->exposure->val);
if (ret)
break;
pdev->last_exposure = pdev->exposure->val;
pdev->last_exposure_update = jiffies;
pdev->exposure_valid = true;
break;
default:
ret = -EINVAL;
}
if (ret)
PWC_ERROR("g_ctrl %s error %d\n", ctrl->name, ret);
return ret;
}
static int pwc_set_awb(struct pwc_device *pdev)
{
int ret;
if (pdev->auto_white_balance->is_new) {
ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
WB_MODE_FORMATTER,
pdev->auto_white_balance->val);
if (ret)
return ret;
if (pdev->auto_white_balance->val != awb_manual)
pdev->color_bal_valid = false; /* Force cache update */
/*
* If this is a preset, update our red / blue balance values
* so that events get generated for the new preset values
*/
if (pdev->auto_white_balance->val == awb_indoor ||
pdev->auto_white_balance->val == awb_outdoor ||
pdev->auto_white_balance->val == awb_fl)
pwc_g_volatile_ctrl(pdev->auto_white_balance);
}
if (pdev->auto_white_balance->val != awb_manual)
return 0;
if (pdev->red_balance->is_new) {
ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
PRESET_MANUAL_RED_GAIN_FORMATTER,
pdev->red_balance->val);
if (ret)
return ret;
}
if (pdev->blue_balance->is_new) {
ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
PRESET_MANUAL_BLUE_GAIN_FORMATTER,
pdev->blue_balance->val);
if (ret)
return ret;
}
return 0;
}
/* For CODEC2 models which have separate autogain and auto exposure */
static int pwc_set_autogain(struct pwc_device *pdev)
{
int ret;
if (pdev->autogain->is_new) {
ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
AGC_MODE_FORMATTER,
pdev->autogain->val ? 0 : 0xff);
if (ret)
return ret;
if (pdev->autogain->val)
pdev->gain_valid = false; /* Force cache update */
}
if (pdev->autogain->val)
return 0;
if (pdev->gain->is_new) {
ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
PRESET_AGC_FORMATTER,
pdev->gain->val);
if (ret)
return ret;
}
return 0;
}
/* For CODEC2 models which have separate autogain and auto exposure */
static int pwc_set_exposure_auto(struct pwc_device *pdev)
{
int ret;
int is_auto = pdev->exposure_auto->val == V4L2_EXPOSURE_AUTO;
if (pdev->exposure_auto->is_new) {
ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
SHUTTER_MODE_FORMATTER,
is_auto ? 0 : 0xff);
if (ret)
return ret;
if (is_auto)
pdev->exposure_valid = false; /* Force cache update */
}
if (is_auto)
return 0;
if (pdev->exposure->is_new) {
ret = pwc_set_u16_ctrl(pdev, SET_LUM_CTL,
PRESET_SHUTTER_FORMATTER,
pdev->exposure->val);
if (ret)
return ret;
}
return 0;
}
/* For CODEC3 models which have autogain controlling both gain and exposure */
static int pwc_set_autogain_expo(struct pwc_device *pdev)
{
int ret;
if (pdev->autogain->is_new) {
ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
AGC_MODE_FORMATTER,
pdev->autogain->val ? 0 : 0xff);
if (ret)
return ret;
if (pdev->autogain->val) {
pdev->gain_valid = false; /* Force cache update */
pdev->exposure_valid = false; /* Force cache update */
}
}
if (pdev->autogain->val)
return 0;
if (pdev->gain->is_new) {
ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
PRESET_AGC_FORMATTER,
pdev->gain->val);
if (ret)
return ret;
}
if (pdev->exposure->is_new) {
ret = pwc_set_u16_ctrl(pdev, SET_LUM_CTL,
PRESET_SHUTTER_FORMATTER,
pdev->exposure->val);
if (ret)
return ret;
}
return 0;
}
static int pwc_set_motor(struct pwc_device *pdev)
{
int ret;
pdev->ctrl_buf[0] = 0;
if (pdev->motor_pan_reset->is_new)
pdev->ctrl_buf[0] |= 0x01;
if (pdev->motor_tilt_reset->is_new)
pdev->ctrl_buf[0] |= 0x02;
if (pdev->motor_pan_reset->is_new || pdev->motor_tilt_reset->is_new) {
ret = send_control_msg(pdev, SET_MPT_CTL,
PT_RESET_CONTROL_FORMATTER,
pdev->ctrl_buf, 1);
if (ret < 0)
return ret;
}
memset(pdev->ctrl_buf, 0, 4);
if (pdev->motor_pan->is_new) {
pdev->ctrl_buf[0] = pdev->motor_pan->val & 0xFF;
pdev->ctrl_buf[1] = (pdev->motor_pan->val >> 8);
}
if (pdev->motor_tilt->is_new) {
pdev->ctrl_buf[2] = pdev->motor_tilt->val & 0xFF;
pdev->ctrl_buf[3] = (pdev->motor_tilt->val >> 8);
}
if (pdev->motor_pan->is_new || pdev->motor_tilt->is_new) {
ret = send_control_msg(pdev, SET_MPT_CTL,
PT_RELATIVE_CONTROL_FORMATTER,
pdev->ctrl_buf, 4);
if (ret < 0)
return ret;
}
return 0;
}
static int pwc_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct pwc_device *pdev =
container_of(ctrl->handler, struct pwc_device, ctrl_handler);
int ret = 0;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
BRIGHTNESS_FORMATTER, ctrl->val);
break;
case V4L2_CID_CONTRAST:
ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
CONTRAST_FORMATTER, ctrl->val);
break;
case V4L2_CID_SATURATION:
ret = pwc_set_s8_ctrl(pdev, SET_CHROM_CTL,
pdev->saturation_fmt, ctrl->val);
break;
case V4L2_CID_GAMMA:
ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
GAMMA_FORMATTER, ctrl->val);
break;
case V4L2_CID_AUTO_WHITE_BALANCE:
ret = pwc_set_awb(pdev);
break;
case V4L2_CID_AUTOGAIN:
if (DEVICE_USE_CODEC2(pdev->type))
ret = pwc_set_autogain(pdev);
else if (DEVICE_USE_CODEC3(pdev->type))
ret = pwc_set_autogain_expo(pdev);
else
ret = -EINVAL;
break;
case V4L2_CID_EXPOSURE_AUTO:
if (DEVICE_USE_CODEC2(pdev->type))
ret = pwc_set_exposure_auto(pdev);
else
ret = -EINVAL;
break;
case V4L2_CID_COLORFX:
ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
COLOUR_MODE_FORMATTER,
ctrl->val ? 0 : 0xff);
break;
case PWC_CID_CUSTOM(autocontour):
if (pdev->autocontour->is_new) {
ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
AUTO_CONTOUR_FORMATTER,
pdev->autocontour->val ? 0 : 0xff);
}
if (ret == 0 && pdev->contour->is_new) {
ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
PRESET_CONTOUR_FORMATTER,
pdev->contour->val);
}
break;
case V4L2_CID_BACKLIGHT_COMPENSATION:
ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
BACK_LIGHT_COMPENSATION_FORMATTER,
ctrl->val ? 0 : 0xff);
break;
case V4L2_CID_BAND_STOP_FILTER:
ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
FLICKERLESS_MODE_FORMATTER,
ctrl->val ? 0 : 0xff);
break;
case PWC_CID_CUSTOM(noise_reduction):
ret = pwc_set_u8_ctrl(pdev, SET_LUM_CTL,
DYNAMIC_NOISE_CONTROL_FORMATTER,
ctrl->val);
break;
case PWC_CID_CUSTOM(save_user):
ret = pwc_button_ctrl(pdev, SAVE_USER_DEFAULTS_FORMATTER);
break;
case PWC_CID_CUSTOM(restore_user):
ret = pwc_button_ctrl(pdev, RESTORE_USER_DEFAULTS_FORMATTER);
break;
case PWC_CID_CUSTOM(restore_factory):
ret = pwc_button_ctrl(pdev,
RESTORE_FACTORY_DEFAULTS_FORMATTER);
break;
case PWC_CID_CUSTOM(awb_speed):
ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
AWB_CONTROL_SPEED_FORMATTER,
ctrl->val);
break;
case PWC_CID_CUSTOM(awb_delay):
ret = pwc_set_u8_ctrl(pdev, SET_CHROM_CTL,
AWB_CONTROL_DELAY_FORMATTER,
ctrl->val);
break;
case V4L2_CID_PAN_RELATIVE:
ret = pwc_set_motor(pdev);
break;
default:
ret = -EINVAL;
}
if (ret)
PWC_ERROR("s_ctrl %s error %d\n", ctrl->name, ret);
return ret;
}
static int pwc_enum_fmt_vid_cap(struct file *file, void *fh, struct v4l2_fmtdesc *f)
{
struct pwc_device *pdev = video_drvdata(file);
/* We only support two format: the raw format, and YUV */
switch (f->index) {
case 0:
/* RAW format */
f->pixelformat = pdev->type <= 646 ? V4L2_PIX_FMT_PWC1 : V4L2_PIX_FMT_PWC2;
break;
case 1:
f->pixelformat = V4L2_PIX_FMT_YUV420;
break;
default:
return -EINVAL;
}
return 0;
}
static int pwc_g_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
{
struct pwc_device *pdev = video_drvdata(file);
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
PWC_DEBUG_IOCTL("ioctl(VIDIOC_G_FMT) return size %dx%d\n",
pdev->width, pdev->height);
pwc_vidioc_fill_fmt(f, pdev->width, pdev->height, pdev->pixfmt);
return 0;
}
static int pwc_try_fmt_vid_cap(struct file *file, void *fh, struct v4l2_format *f)
{
struct pwc_device *pdev = video_drvdata(file);
return pwc_vidioc_try_fmt(pdev, f);
}
static int pwc_enum_framesizes(struct file *file, void *fh,
struct v4l2_frmsizeenum *fsize)
{
struct pwc_device *pdev = video_drvdata(file);
unsigned int i = 0, index = fsize->index;
if (fsize->pixel_format == V4L2_PIX_FMT_YUV420 ||
(fsize->pixel_format == V4L2_PIX_FMT_PWC1 &&
DEVICE_USE_CODEC1(pdev->type)) ||
(fsize->pixel_format == V4L2_PIX_FMT_PWC2 &&
DEVICE_USE_CODEC23(pdev->type))) {
for (i = 0; i < PSZ_MAX; i++) {
if (!(pdev->image_mask & (1UL << i)))
continue;
if (!index--) {
fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
fsize->discrete.width = pwc_image_sizes[i][0];
fsize->discrete.height = pwc_image_sizes[i][1];
return 0;
}
}
}
return -EINVAL;
}
static int pwc_enum_frameintervals(struct file *file, void *fh,
struct v4l2_frmivalenum *fival)
{
struct pwc_device *pdev = video_drvdata(file);
int size = -1;
unsigned int i;
for (i = 0; i < PSZ_MAX; i++) {
if (pwc_image_sizes[i][0] == fival->width &&
pwc_image_sizes[i][1] == fival->height) {
size = i;
break;
}
}
/* TODO: Support raw format */
if (size < 0 || fival->pixel_format != V4L2_PIX_FMT_YUV420)
return -EINVAL;
i = pwc_get_fps(pdev, fival->index, size);
if (!i)
return -EINVAL;
fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
fival->discrete.numerator = 1;
fival->discrete.denominator = i;
return 0;
}
static int pwc_g_parm(struct file *file, void *fh,
struct v4l2_streamparm *parm)
{
struct pwc_device *pdev = video_drvdata(file);
if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
memset(parm, 0, sizeof(*parm));
parm->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
parm->parm.capture.readbuffers = MIN_FRAMES;
parm->parm.capture.capability |= V4L2_CAP_TIMEPERFRAME;
parm->parm.capture.timeperframe.denominator = pdev->vframes;
parm->parm.capture.timeperframe.numerator = 1;
return 0;
}
static int pwc_s_parm(struct file *file, void *fh,
struct v4l2_streamparm *parm)
{
struct pwc_device *pdev = video_drvdata(file);
int compression = 0;
int ret, fps;
if (parm->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
/* If timeperframe == 0, then reset the framerate to the nominal value.
We pick a high framerate here, and let pwc_set_video_mode() figure
out the best match. */
if (parm->parm.capture.timeperframe.numerator == 0 ||
parm->parm.capture.timeperframe.denominator == 0)
fps = 30;
else
fps = parm->parm.capture.timeperframe.denominator /
parm->parm.capture.timeperframe.numerator;
if (vb2_is_busy(&pdev->vb_queue))
return -EBUSY;
ret = pwc_set_video_mode(pdev, pdev->width, pdev->height, pdev->pixfmt,
fps, &compression, 0);
pwc_g_parm(file, fh, parm);
return ret;
}
const struct v4l2_ioctl_ops pwc_ioctl_ops = {
.vidioc_querycap = pwc_querycap,
.vidioc_enum_input = pwc_enum_input,
.vidioc_g_input = pwc_g_input,
.vidioc_s_input = pwc_s_input,
.vidioc_enum_fmt_vid_cap = pwc_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = pwc_g_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = pwc_s_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = pwc_try_fmt_vid_cap,
.vidioc_reqbufs = vb2_ioctl_reqbufs,
.vidioc_querybuf = vb2_ioctl_querybuf,
.vidioc_qbuf = vb2_ioctl_qbuf,
.vidioc_dqbuf = vb2_ioctl_dqbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
.vidioc_log_status = v4l2_ctrl_log_status,
.vidioc_enum_framesizes = pwc_enum_framesizes,
.vidioc_enum_frameintervals = pwc_enum_frameintervals,
.vidioc_g_parm = pwc_g_parm,
.vidioc_s_parm = pwc_s_parm,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
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