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path: root/drivers/media/usb/pwc/pwc-v4l.c
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Diffstat (limited to 'drivers/media/usb/pwc/pwc-v4l.c')
-rw-r--r--drivers/media/usb/pwc/pwc-v4l.c1033
1 files changed, 1033 insertions, 0 deletions
diff --git a/drivers/media/usb/pwc/pwc-v4l.c b/drivers/media/usb/pwc/pwc-v4l.c
new file mode 100644
index 0000000000..71b719d363
--- /dev/null
+++ b/drivers/media/usb/pwc/pwc-v4l.c
@@ -0,0 +1,1033 @@
+// 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 */
+ fallthrough;
+ 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,
+};