diff options
Diffstat (limited to 'drivers/staging/media/deprecated/cpia2/cpia2_v4l.c')
| -rw-r--r-- | drivers/staging/media/deprecated/cpia2/cpia2_v4l.c | 1226 |
1 files changed, 0 insertions, 1226 deletions
diff --git a/drivers/staging/media/deprecated/cpia2/cpia2_v4l.c b/drivers/staging/media/deprecated/cpia2/cpia2_v4l.c deleted file mode 100644 index 926ecfc9b64a..000000000000 --- a/drivers/staging/media/deprecated/cpia2/cpia2_v4l.c +++ /dev/null @@ -1,1226 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/**************************************************************************** - * - * Filename: cpia2_v4l.c - * - * Copyright 2001, STMicrolectronics, Inc. - * Contact: steve.miller@st.com - * Copyright 2001,2005, Scott J. Bertin <scottbertin@yahoo.com> - * - * Description: - * This is a USB driver for CPia2 based video cameras. - * The infrastructure of this driver is based on the cpia usb driver by - * Jochen Scharrlach and Johannes Erdfeldt. - * - * Stripped of 2.4 stuff ready for main kernel submit by - * Alan Cox <alan@lxorguk.ukuu.org.uk> - ****************************************************************************/ - -#define CPIA_VERSION "3.0.1" - -#include <linux/module.h> -#include <linux/time.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/videodev2.h> -#include <linux/stringify.h> -#include <media/v4l2-ioctl.h> -#include <media/v4l2-event.h> - -#include "cpia2.h" - -static int video_nr = -1; -module_param(video_nr, int, 0); -MODULE_PARM_DESC(video_nr, "video device to register (0=/dev/video0, etc)"); - -static int buffer_size = 68 * 1024; -module_param(buffer_size, int, 0); -MODULE_PARM_DESC(buffer_size, "Size for each frame buffer in bytes (default 68k)"); - -static int num_buffers = 3; -module_param(num_buffers, int, 0); -MODULE_PARM_DESC(num_buffers, "Number of frame buffers (1-" - __stringify(VIDEO_MAX_FRAME) ", default 3)"); - -static int alternate = DEFAULT_ALT; -module_param(alternate, int, 0); -MODULE_PARM_DESC(alternate, "USB Alternate (" __stringify(USBIF_ISO_1) "-" - __stringify(USBIF_ISO_6) ", default " - __stringify(DEFAULT_ALT) ")"); - -static int flicker_mode; -module_param(flicker_mode, int, 0); -MODULE_PARM_DESC(flicker_mode, "Flicker frequency (0 (disabled), " __stringify(50) " or " - __stringify(60) ", default 0)"); - -MODULE_AUTHOR("Steve Miller (STMicroelectronics) <steve.miller@st.com>"); -MODULE_DESCRIPTION("V4L-driver for STMicroelectronics CPiA2 based cameras"); -MODULE_LICENSE("GPL"); -MODULE_VERSION(CPIA_VERSION); - -#define ABOUT "V4L-Driver for Vision CPiA2 based cameras" -#define CPIA2_CID_USB_ALT (V4L2_CID_USER_BASE | 0xf000) - -/****************************************************************************** - * - * cpia2_open - * - *****************************************************************************/ -static int cpia2_open(struct file *file) -{ - struct camera_data *cam = video_drvdata(file); - int retval; - - if (mutex_lock_interruptible(&cam->v4l2_lock)) - return -ERESTARTSYS; - retval = v4l2_fh_open(file); - if (retval) - goto open_unlock; - - if (v4l2_fh_is_singular_file(file)) { - if (cpia2_allocate_buffers(cam)) { - v4l2_fh_release(file); - retval = -ENOMEM; - goto open_unlock; - } - - /* reset the camera */ - if (cpia2_reset_camera(cam) < 0) { - v4l2_fh_release(file); - retval = -EIO; - goto open_unlock; - } - - cam->APP_len = 0; - cam->COM_len = 0; - } - - cpia2_dbg_dump_registers(cam); -open_unlock: - mutex_unlock(&cam->v4l2_lock); - return retval; -} - -/****************************************************************************** - * - * cpia2_close - * - *****************************************************************************/ -static int cpia2_close(struct file *file) -{ - struct video_device *dev = video_devdata(file); - struct camera_data *cam = video_get_drvdata(dev); - - mutex_lock(&cam->v4l2_lock); - if (video_is_registered(&cam->vdev) && v4l2_fh_is_singular_file(file)) { - cpia2_usb_stream_stop(cam); - - /* save camera state for later open */ - cpia2_save_camera_state(cam); - - cpia2_set_low_power(cam); - cpia2_free_buffers(cam); - } - - if (cam->stream_fh == file->private_data) { - cam->stream_fh = NULL; - cam->mmapped = 0; - } - mutex_unlock(&cam->v4l2_lock); - return v4l2_fh_release(file); -} - -/****************************************************************************** - * - * cpia2_v4l_read - * - *****************************************************************************/ -static ssize_t cpia2_v4l_read(struct file *file, char __user *buf, size_t count, - loff_t *off) -{ - struct camera_data *cam = video_drvdata(file); - int noblock = file->f_flags & O_NONBLOCK; - ssize_t ret; - - if (!cam) - return -EINVAL; - - if (mutex_lock_interruptible(&cam->v4l2_lock)) - return -ERESTARTSYS; - ret = cpia2_read(cam, buf, count, noblock); - mutex_unlock(&cam->v4l2_lock); - return ret; -} - -/****************************************************************************** - * - * cpia2_v4l_poll - * - *****************************************************************************/ -static __poll_t cpia2_v4l_poll(struct file *filp, struct poll_table_struct *wait) -{ - struct camera_data *cam = video_drvdata(filp); - __poll_t res; - - mutex_lock(&cam->v4l2_lock); - res = cpia2_poll(cam, filp, wait); - mutex_unlock(&cam->v4l2_lock); - return res; -} - -static int sync(struct camera_data *cam, int frame_nr) -{ - struct framebuf *frame = &cam->buffers[frame_nr]; - - while (1) { - if (frame->status == FRAME_READY) - return 0; - - if (!cam->streaming) { - frame->status = FRAME_READY; - frame->length = 0; - return 0; - } - - mutex_unlock(&cam->v4l2_lock); - wait_event_interruptible(cam->wq_stream, - !cam->streaming || - frame->status == FRAME_READY); - mutex_lock(&cam->v4l2_lock); - if (signal_pending(current)) - return -ERESTARTSYS; - if (!video_is_registered(&cam->vdev)) - return -ENOTTY; - } -} - -/****************************************************************************** - * - * ioctl_querycap - * - * V4L2 device capabilities - * - *****************************************************************************/ - -static int cpia2_querycap(struct file *file, void *fh, struct v4l2_capability *vc) -{ - struct camera_data *cam = video_drvdata(file); - - strscpy(vc->driver, "cpia2", sizeof(vc->driver)); - - if (cam->params.pnp_id.product == 0x151) - strscpy(vc->card, "QX5 Microscope", sizeof(vc->card)); - else - strscpy(vc->card, "CPiA2 Camera", sizeof(vc->card)); - switch (cam->params.pnp_id.device_type) { - case DEVICE_STV_672: - strcat(vc->card, " (672/"); - break; - case DEVICE_STV_676: - strcat(vc->card, " (676/"); - break; - default: - strcat(vc->card, " (XXX/"); - break; - } - switch (cam->params.version.sensor_flags) { - case CPIA2_VP_SENSOR_FLAGS_404: - strcat(vc->card, "404)"); - break; - case CPIA2_VP_SENSOR_FLAGS_407: - strcat(vc->card, "407)"); - break; - case CPIA2_VP_SENSOR_FLAGS_409: - strcat(vc->card, "409)"); - break; - case CPIA2_VP_SENSOR_FLAGS_410: - strcat(vc->card, "410)"); - break; - case CPIA2_VP_SENSOR_FLAGS_500: - strcat(vc->card, "500)"); - break; - default: - strcat(vc->card, "XXX)"); - break; - } - - if (usb_make_path(cam->dev, vc->bus_info, sizeof(vc->bus_info)) < 0) - memset(vc->bus_info, 0, sizeof(vc->bus_info)); - return 0; -} - -/****************************************************************************** - * - * ioctl_input - * - * V4L2 input get/set/enumerate - * - *****************************************************************************/ - -static int cpia2_enum_input(struct file *file, void *fh, struct v4l2_input *i) -{ - if (i->index) - return -EINVAL; - strscpy(i->name, "Camera", sizeof(i->name)); - i->type = V4L2_INPUT_TYPE_CAMERA; - return 0; -} - -static int cpia2_g_input(struct file *file, void *fh, unsigned int *i) -{ - *i = 0; - return 0; -} - -static int cpia2_s_input(struct file *file, void *fh, unsigned int i) -{ - return i ? -EINVAL : 0; -} - -/****************************************************************************** - * - * ioctl_enum_fmt - * - * V4L2 format enumerate - * - *****************************************************************************/ - -static int cpia2_enum_fmt_vid_cap(struct file *file, void *fh, - struct v4l2_fmtdesc *f) -{ - if (f->index > 1) - return -EINVAL; - - if (f->index == 0) - f->pixelformat = V4L2_PIX_FMT_MJPEG; - else - f->pixelformat = V4L2_PIX_FMT_JPEG; - return 0; -} - -/****************************************************************************** - * - * ioctl_try_fmt - * - * V4L2 format try - * - *****************************************************************************/ - -static int cpia2_try_fmt_vid_cap(struct file *file, void *fh, - struct v4l2_format *f) -{ - struct camera_data *cam = video_drvdata(file); - - if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_MJPEG && - f->fmt.pix.pixelformat != V4L2_PIX_FMT_JPEG) - return -EINVAL; - - f->fmt.pix.field = V4L2_FIELD_NONE; - f->fmt.pix.bytesperline = 0; - f->fmt.pix.sizeimage = cam->frame_size; - f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG; - - switch (cpia2_match_video_size(f->fmt.pix.width, f->fmt.pix.height)) { - case VIDEOSIZE_VGA: - f->fmt.pix.width = 640; - f->fmt.pix.height = 480; - break; - case VIDEOSIZE_CIF: - f->fmt.pix.width = 352; - f->fmt.pix.height = 288; - break; - case VIDEOSIZE_QVGA: - f->fmt.pix.width = 320; - f->fmt.pix.height = 240; - break; - case VIDEOSIZE_288_216: - f->fmt.pix.width = 288; - f->fmt.pix.height = 216; - break; - case VIDEOSIZE_256_192: - f->fmt.pix.width = 256; - f->fmt.pix.height = 192; - break; - case VIDEOSIZE_224_168: - f->fmt.pix.width = 224; - f->fmt.pix.height = 168; - break; - case VIDEOSIZE_192_144: - f->fmt.pix.width = 192; - f->fmt.pix.height = 144; - break; - case VIDEOSIZE_QCIF: - default: - f->fmt.pix.width = 176; - f->fmt.pix.height = 144; - break; - } - - return 0; -} - -/****************************************************************************** - * - * ioctl_set_fmt - * - * V4L2 format set - * - *****************************************************************************/ - -static int cpia2_s_fmt_vid_cap(struct file *file, void *_fh, - struct v4l2_format *f) -{ - struct camera_data *cam = video_drvdata(file); - int err, frame; - - err = cpia2_try_fmt_vid_cap(file, _fh, f); - if (err != 0) - return err; - - cam->pixelformat = f->fmt.pix.pixelformat; - - /* NOTE: This should be set to 1 for MJPEG, but some apps don't handle - * the missing Huffman table properly. - */ - cam->params.compression.inhibit_htables = 0; - /*f->fmt.pix.pixelformat == V4L2_PIX_FMT_MJPEG;*/ - - /* we set the video window to something smaller or equal to what - * is requested by the user??? - */ - DBG("Requested width = %d, height = %d\n", - f->fmt.pix.width, f->fmt.pix.height); - if (f->fmt.pix.width != cam->width || - f->fmt.pix.height != cam->height) { - cam->width = f->fmt.pix.width; - cam->height = f->fmt.pix.height; - cam->params.roi.width = f->fmt.pix.width; - cam->params.roi.height = f->fmt.pix.height; - cpia2_set_format(cam); - } - - for (frame = 0; frame < cam->num_frames; ++frame) { - if (cam->buffers[frame].status == FRAME_READING) - if ((err = sync(cam, frame)) < 0) - return err; - - cam->buffers[frame].status = FRAME_EMPTY; - } - - return 0; -} - -/****************************************************************************** - * - * ioctl_get_fmt - * - * V4L2 format get - * - *****************************************************************************/ - -static int cpia2_g_fmt_vid_cap(struct file *file, void *fh, - struct v4l2_format *f) -{ - struct camera_data *cam = video_drvdata(file); - - f->fmt.pix.width = cam->width; - f->fmt.pix.height = cam->height; - f->fmt.pix.pixelformat = cam->pixelformat; - f->fmt.pix.field = V4L2_FIELD_NONE; - f->fmt.pix.bytesperline = 0; - f->fmt.pix.sizeimage = cam->frame_size; - f->fmt.pix.colorspace = V4L2_COLORSPACE_JPEG; - - return 0; -} - -/****************************************************************************** - * - * ioctl_cropcap - * - * V4L2 query cropping capabilities - * NOTE: cropping is currently disabled - * - *****************************************************************************/ - -static int cpia2_g_selection(struct file *file, void *fh, - struct v4l2_selection *s) -{ - struct camera_data *cam = video_drvdata(file); - - if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - - switch (s->target) { - case V4L2_SEL_TGT_CROP_BOUNDS: - case V4L2_SEL_TGT_CROP_DEFAULT: - s->r.left = 0; - s->r.top = 0; - s->r.width = cam->width; - s->r.height = cam->height; - break; - default: - return -EINVAL; - } - return 0; -} - -struct framerate_info { - int value; - struct v4l2_fract period; -}; - -static const struct framerate_info framerate_controls[] = { - { CPIA2_VP_FRAMERATE_6_25, { 4, 25 } }, - { CPIA2_VP_FRAMERATE_7_5, { 2, 15 } }, - { CPIA2_VP_FRAMERATE_12_5, { 2, 25 } }, - { CPIA2_VP_FRAMERATE_15, { 1, 15 } }, - { CPIA2_VP_FRAMERATE_25, { 1, 25 } }, - { CPIA2_VP_FRAMERATE_30, { 1, 30 } }, -}; - -static int cpia2_g_parm(struct file *file, void *fh, struct v4l2_streamparm *p) -{ - struct camera_data *cam = video_drvdata(file); - struct v4l2_captureparm *cap = &p->parm.capture; - int i; - - if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - - cap->capability = V4L2_CAP_TIMEPERFRAME; - cap->readbuffers = cam->num_frames; - for (i = 0; i < ARRAY_SIZE(framerate_controls); i++) - if (cam->params.vp_params.frame_rate == framerate_controls[i].value) { - cap->timeperframe = framerate_controls[i].period; - break; - } - return 0; -} - -static int cpia2_s_parm(struct file *file, void *fh, struct v4l2_streamparm *p) -{ - struct camera_data *cam = video_drvdata(file); - struct v4l2_captureparm *cap = &p->parm.capture; - struct v4l2_fract tpf = cap->timeperframe; - int max = ARRAY_SIZE(framerate_controls) - 1; - int ret; - int i; - - ret = cpia2_g_parm(file, fh, p); - if (ret || !tpf.denominator || !tpf.numerator) - return ret; - - /* Maximum 15 fps for this model */ - if (cam->params.pnp_id.device_type == DEVICE_STV_672 && - cam->params.version.sensor_flags == CPIA2_VP_SENSOR_FLAGS_500) - max -= 2; - for (i = 0; i <= max; i++) { - struct v4l2_fract f1 = tpf; - struct v4l2_fract f2 = framerate_controls[i].period; - - f1.numerator *= f2.denominator; - f2.numerator *= f1.denominator; - if (f1.numerator >= f2.numerator) - break; - } - if (i > max) - i = max; - cap->timeperframe = framerate_controls[i].period; - return cpia2_set_fps(cam, framerate_controls[i].value); -} - -static const struct { - u32 width; - u32 height; -} cpia2_framesizes[] = { - { 640, 480 }, - { 352, 288 }, - { 320, 240 }, - { 288, 216 }, - { 256, 192 }, - { 224, 168 }, - { 192, 144 }, - { 176, 144 }, -}; - -static int cpia2_enum_framesizes(struct file *file, void *fh, - struct v4l2_frmsizeenum *fsize) -{ - if (fsize->pixel_format != V4L2_PIX_FMT_MJPEG && - fsize->pixel_format != V4L2_PIX_FMT_JPEG) - return -EINVAL; - if (fsize->index >= ARRAY_SIZE(cpia2_framesizes)) - return -EINVAL; - fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; - fsize->discrete.width = cpia2_framesizes[fsize->index].width; - fsize->discrete.height = cpia2_framesizes[fsize->index].height; - - return 0; -} - -static int cpia2_enum_frameintervals(struct file *file, void *fh, - struct v4l2_frmivalenum *fival) -{ - struct camera_data *cam = video_drvdata(file); - int max = ARRAY_SIZE(framerate_controls) - 1; - int i; - - if (fival->pixel_format != V4L2_PIX_FMT_MJPEG && - fival->pixel_format != V4L2_PIX_FMT_JPEG) - return -EINVAL; - - /* Maximum 15 fps for this model */ - if (cam->params.pnp_id.device_type == DEVICE_STV_672 && - cam->params.version.sensor_flags == CPIA2_VP_SENSOR_FLAGS_500) - max -= 2; - if (fival->index > max) - return -EINVAL; - for (i = 0; i < ARRAY_SIZE(cpia2_framesizes); i++) - if (fival->width == cpia2_framesizes[i].width && - fival->height == cpia2_framesizes[i].height) - break; - if (i == ARRAY_SIZE(cpia2_framesizes)) - return -EINVAL; - fival->type = V4L2_FRMIVAL_TYPE_DISCRETE; - fival->discrete = framerate_controls[fival->index].period; - return 0; -} - -/****************************************************************************** - * - * ioctl_s_ctrl - * - * V4L2 set the value of a control variable - * - *****************************************************************************/ - -static int cpia2_s_ctrl(struct v4l2_ctrl *ctrl) -{ - struct camera_data *cam = - container_of(ctrl->handler, struct camera_data, hdl); - static const int flicker_table[] = { - NEVER_FLICKER, - FLICKER_50, - FLICKER_60, - }; - - DBG("Set control id:%d, value:%d\n", ctrl->id, ctrl->val); - - switch (ctrl->id) { - case V4L2_CID_BRIGHTNESS: - cpia2_set_brightness(cam, ctrl->val); - break; - case V4L2_CID_CONTRAST: - cpia2_set_contrast(cam, ctrl->val); - break; - case V4L2_CID_SATURATION: - cpia2_set_saturation(cam, ctrl->val); - break; - case V4L2_CID_HFLIP: - cpia2_set_property_mirror(cam, ctrl->val); - break; - case V4L2_CID_VFLIP: - cpia2_set_property_flip(cam, ctrl->val); - break; - case V4L2_CID_POWER_LINE_FREQUENCY: - return cpia2_set_flicker_mode(cam, flicker_table[ctrl->val]); - case V4L2_CID_ILLUMINATORS_1: - return cpia2_set_gpio(cam, (cam->top_light->val << 6) | - (cam->bottom_light->val << 7)); - case V4L2_CID_JPEG_ACTIVE_MARKER: - cam->params.compression.inhibit_htables = - !(ctrl->val & V4L2_JPEG_ACTIVE_MARKER_DHT); - break; - case V4L2_CID_JPEG_COMPRESSION_QUALITY: - cam->params.vc_params.quality = ctrl->val; - break; - case CPIA2_CID_USB_ALT: - cam->params.camera_state.stream_mode = ctrl->val; - break; - default: - return -EINVAL; - } - - return 0; -} - -/****************************************************************************** - * - * ioctl_g_jpegcomp - * - * V4L2 get the JPEG compression parameters - * - *****************************************************************************/ - -static int cpia2_g_jpegcomp(struct file *file, void *fh, struct v4l2_jpegcompression *parms) -{ - struct camera_data *cam = video_drvdata(file); - - memset(parms, 0, sizeof(*parms)); - - parms->quality = 80; // TODO: Can this be made meaningful? - - parms->jpeg_markers = V4L2_JPEG_MARKER_DQT | V4L2_JPEG_MARKER_DRI; - if (!cam->params.compression.inhibit_htables) - parms->jpeg_markers |= V4L2_JPEG_MARKER_DHT; - - parms->APPn = cam->APPn; - parms->APP_len = cam->APP_len; - if (cam->APP_len > 0) { - memcpy(parms->APP_data, cam->APP_data, cam->APP_len); - parms->jpeg_markers |= V4L2_JPEG_MARKER_APP; - } - - parms->COM_len = cam->COM_len; - if (cam->COM_len > 0) { - memcpy(parms->COM_data, cam->COM_data, cam->COM_len); - parms->jpeg_markers |= JPEG_MARKER_COM; - } - - DBG("G_JPEGCOMP APP_len:%d COM_len:%d\n", - parms->APP_len, parms->COM_len); - - return 0; -} - -/****************************************************************************** - * - * ioctl_s_jpegcomp - * - * V4L2 set the JPEG compression parameters - * NOTE: quality and some jpeg_markers are ignored. - * - *****************************************************************************/ - -static int cpia2_s_jpegcomp(struct file *file, void *fh, - const struct v4l2_jpegcompression *parms) -{ - struct camera_data *cam = video_drvdata(file); - - DBG("S_JPEGCOMP APP_len:%d COM_len:%d\n", - parms->APP_len, parms->COM_len); - - cam->params.compression.inhibit_htables = - !(parms->jpeg_markers & V4L2_JPEG_MARKER_DHT); - - if (parms->APP_len != 0) { - if (parms->APP_len > 0 && - parms->APP_len <= sizeof(cam->APP_data) && - parms->APPn >= 0 && parms->APPn <= 15) { - cam->APPn = parms->APPn; - cam->APP_len = parms->APP_len; - memcpy(cam->APP_data, parms->APP_data, parms->APP_len); - } else { - LOG("Bad APPn Params n=%d len=%d\n", - parms->APPn, parms->APP_len); - return -EINVAL; - } - } else { - cam->APP_len = 0; - } - - if (parms->COM_len != 0) { - if (parms->COM_len > 0 && - parms->COM_len <= sizeof(cam->COM_data)) { - cam->COM_len = parms->COM_len; - memcpy(cam->COM_data, parms->COM_data, parms->COM_len); - } else { - LOG("Bad COM_len=%d\n", parms->COM_len); - return -EINVAL; - } - } - - return 0; -} - -/****************************************************************************** - * - * ioctl_reqbufs - * - * V4L2 Initiate memory mapping. - * NOTE: The user's request is ignored. For now the buffers are fixed. - * - *****************************************************************************/ - -static int cpia2_reqbufs(struct file *file, void *fh, struct v4l2_requestbuffers *req) -{ - struct camera_data *cam = video_drvdata(file); - - if (req->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || - req->memory != V4L2_MEMORY_MMAP) - return -EINVAL; - - DBG("REQBUFS requested:%d returning:%d\n", req->count, cam->num_frames); - req->count = cam->num_frames; - memset(&req->reserved, 0, sizeof(req->reserved)); - - return 0; -} - -/****************************************************************************** - * - * ioctl_querybuf - * - * V4L2 Query memory buffer status. - * - *****************************************************************************/ - -static int cpia2_querybuf(struct file *file, void *fh, struct v4l2_buffer *buf) -{ - struct camera_data *cam = video_drvdata(file); - - if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || - buf->index >= cam->num_frames) - return -EINVAL; - - buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer; - buf->length = cam->frame_size; - - buf->memory = V4L2_MEMORY_MMAP; - - if (cam->mmapped) - buf->flags = V4L2_BUF_FLAG_MAPPED; - else - buf->flags = 0; - - buf->flags |= V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; - - switch (cam->buffers[buf->index].status) { - case FRAME_EMPTY: - case FRAME_ERROR: - case FRAME_READING: - buf->bytesused = 0; - buf->flags = V4L2_BUF_FLAG_QUEUED; - break; - case FRAME_READY: - buf->bytesused = cam->buffers[buf->index].length; - v4l2_buffer_set_timestamp(buf, cam->buffers[buf->index].ts); - buf->sequence = cam->buffers[buf->index].seq; - buf->flags = V4L2_BUF_FLAG_DONE; - break; - } - - DBG("QUERYBUF index:%d offset:%d flags:%d seq:%d bytesused:%d\n", - buf->index, buf->m.offset, buf->flags, buf->sequence, - buf->bytesused); - - return 0; -} - -/****************************************************************************** - * - * ioctl_qbuf - * - * V4L2 User is freeing buffer - * - *****************************************************************************/ - -static int cpia2_qbuf(struct file *file, void *fh, struct v4l2_buffer *buf) -{ - struct camera_data *cam = video_drvdata(file); - - if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || - buf->memory != V4L2_MEMORY_MMAP || - buf->index >= cam->num_frames) - return -EINVAL; - - DBG("QBUF #%d\n", buf->index); - - if (cam->buffers[buf->index].status == FRAME_READY) - cam->buffers[buf->index].status = FRAME_EMPTY; - - return 0; -} - -/****************************************************************************** - * - * find_earliest_filled_buffer - * - * Helper for ioctl_dqbuf. Find the next ready buffer. - * - *****************************************************************************/ - -static int find_earliest_filled_buffer(struct camera_data *cam) -{ - int i; - int found = -1; - - for (i = 0; i < cam->num_frames; i++) { - if (cam->buffers[i].status == FRAME_READY) { - if (found < 0) { - found = i; - } else { - /* find which buffer is earlier */ - if (cam->buffers[i].ts < cam->buffers[found].ts) - found = i; - } - } - } - return found; -} - -/****************************************************************************** - * - * ioctl_dqbuf - * - * V4L2 User is asking for a filled buffer. - * - *****************************************************************************/ - -static int cpia2_dqbuf(struct file *file, void *fh, struct v4l2_buffer *buf) -{ - struct camera_data *cam = video_drvdata(file); - int frame; - - if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || - buf->memory != V4L2_MEMORY_MMAP) - return -EINVAL; - - frame = find_earliest_filled_buffer(cam); - - if (frame < 0 && file->f_flags & O_NONBLOCK) - return -EAGAIN; - - if (frame < 0) { - /* Wait for a frame to become available */ - struct framebuf *cb = cam->curbuff; - - mutex_unlock(&cam->v4l2_lock); - wait_event_interruptible(cam->wq_stream, - !video_is_registered(&cam->vdev) || - (cb = cam->curbuff)->status == FRAME_READY); - mutex_lock(&cam->v4l2_lock); - if (signal_pending(current)) - return -ERESTARTSYS; - if (!video_is_registered(&cam->vdev)) - return -ENOTTY; - frame = cb->num; - } - - buf->index = frame; - buf->bytesused = cam->buffers[buf->index].length; - buf->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_DONE - | V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; - buf->field = V4L2_FIELD_NONE; - v4l2_buffer_set_timestamp(buf, cam->buffers[buf->index].ts); - buf->sequence = cam->buffers[buf->index].seq; - buf->m.offset = cam->buffers[buf->index].data - cam->frame_buffer; - buf->length = cam->frame_size; - buf->reserved2 = 0; - buf->request_fd = 0; - memset(&buf->timecode, 0, sizeof(buf->timecode)); - - DBG("DQBUF #%d status:%d seq:%d length:%d\n", buf->index, - cam->buffers[buf->index].status, buf->sequence, buf->bytesused); - - return 0; -} - -static int cpia2_streamon(struct file *file, void *fh, enum v4l2_buf_type type) -{ - struct camera_data *cam = video_drvdata(file); - int ret = -EINVAL; - - DBG("VIDIOC_STREAMON, streaming=%d\n", cam->streaming); - if (!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - - if (!cam->streaming) { - ret = cpia2_usb_stream_start(cam, - cam->params.camera_state.stream_mode); - if (!ret) - v4l2_ctrl_grab(cam->usb_alt, true); - } - return ret; -} - -static int cpia2_streamoff(struct file *file, void *fh, enum v4l2_buf_type type) -{ - struct camera_data *cam = video_drvdata(file); - int ret = -EINVAL; - - DBG("VIDIOC_STREAMOFF, streaming=%d\n", cam->streaming); - if (!cam->mmapped || type != V4L2_BUF_TYPE_VIDEO_CAPTURE) - return -EINVAL; - - if (cam->streaming) { - ret = cpia2_usb_stream_stop(cam); - if (!ret) - v4l2_ctrl_grab(cam->usb_alt, false); - } - return ret; -} - -/****************************************************************************** - * - * cpia2_mmap - * - *****************************************************************************/ -static int cpia2_mmap(struct file *file, struct vm_area_struct *area) -{ - struct camera_data *cam = video_drvdata(file); - int retval; - - if (mutex_lock_interruptible(&cam->v4l2_lock)) - return -ERESTARTSYS; - retval = cpia2_remap_buffer(cam, area); - - if (!retval) - cam->stream_fh = file->private_data; - mutex_unlock(&cam->v4l2_lock); - return retval; -} - -/****************************************************************************** - * - * reset_camera_struct_v4l - * - * Sets all values to the defaults - *****************************************************************************/ -static void reset_camera_struct_v4l(struct camera_data *cam) -{ - cam->width = cam->params.roi.width; - cam->height = cam->params.roi.height; - - cam->frame_size = buffer_size; - cam->num_frames = num_buffers; - - /* Flicker modes */ - cam->params.flicker_control.flicker_mode_req = flicker_mode; - - /* stream modes */ - cam->params.camera_state.stream_mode = alternate; - - cam->pixelformat = V4L2_PIX_FMT_JPEG; -} - -static const struct v4l2_ioctl_ops cpia2_ioctl_ops = { - .vidioc_querycap = cpia2_querycap, - .vidioc_enum_input = cpia2_enum_input, - .vidioc_g_input = cpia2_g_input, - .vidioc_s_input = cpia2_s_input, - .vidioc_enum_fmt_vid_cap = cpia2_enum_fmt_vid_cap, - .vidioc_g_fmt_vid_cap = cpia2_g_fmt_vid_cap, - .vidioc_s_fmt_vid_cap = cpia2_s_fmt_vid_cap, - .vidioc_try_fmt_vid_cap = cpia2_try_fmt_vid_cap, - .vidioc_g_jpegcomp = cpia2_g_jpegcomp, - .vidioc_s_jpegcomp = cpia2_s_jpegcomp, - .vidioc_g_selection = cpia2_g_selection, - .vidioc_reqbufs = cpia2_reqbufs, - .vidioc_querybuf = cpia2_querybuf, - .vidioc_qbuf = cpia2_qbuf, - .vidioc_dqbuf = cpia2_dqbuf, - .vidioc_streamon = cpia2_streamon, - .vidioc_streamoff = cpia2_streamoff, - .vidioc_s_parm = cpia2_s_parm, - .vidioc_g_parm = cpia2_g_parm, - .vidioc_enum_framesizes = cpia2_enum_framesizes, - .vidioc_enum_frameintervals = cpia2_enum_frameintervals, - .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, - .vidioc_unsubscribe_event = v4l2_event_unsubscribe, -}; - -/*** - * The v4l video device structure initialized for this device - ***/ -static const struct v4l2_file_operations cpia2_fops = { - .owner = THIS_MODULE, - .open = cpia2_open, - .release = cpia2_close, - .read = cpia2_v4l_read, - .poll = cpia2_v4l_poll, - .unlocked_ioctl = video_ioctl2, - .mmap = cpia2_mmap, -}; - -static const struct video_device cpia2_template = { - /* I could not find any place for the old .initialize initializer?? */ - .name = "CPiA2 Camera", - .fops = &cpia2_fops, - .ioctl_ops = &cpia2_ioctl_ops, - .release = video_device_release_empty, -}; - -void cpia2_camera_release(struct v4l2_device *v4l2_dev) -{ - struct camera_data *cam = - container_of(v4l2_dev, struct camera_data, v4l2_dev); - - v4l2_ctrl_handler_free(&cam->hdl); - v4l2_device_unregister(&cam->v4l2_dev); - kfree(cam); -} - -static const struct v4l2_ctrl_ops cpia2_ctrl_ops = { - .s_ctrl = cpia2_s_ctrl, -}; - -/****************************************************************************** - * - * cpia2_register_camera - * - *****************************************************************************/ -int cpia2_register_camera(struct camera_data *cam) -{ - struct v4l2_ctrl_handler *hdl = &cam->hdl; - struct v4l2_ctrl_config cpia2_usb_alt = { - .ops = &cpia2_ctrl_ops, - .id = CPIA2_CID_USB_ALT, - .name = "USB Alternate", - .type = V4L2_CTRL_TYPE_INTEGER, - .min = USBIF_ISO_1, - .max = USBIF_ISO_6, - .step = 1, - }; - int ret; - - v4l2_ctrl_handler_init(hdl, 12); - v4l2_ctrl_new_std(hdl, &cpia2_ctrl_ops, - V4L2_CID_BRIGHTNESS, - cam->params.pnp_id.device_type == DEVICE_STV_672 ? 1 : 0, - 255, 1, DEFAULT_BRIGHTNESS); - v4l2_ctrl_new_std(hdl, &cpia2_ctrl_ops, - V4L2_CID_CONTRAST, 0, 255, 1, DEFAULT_CONTRAST); - v4l2_ctrl_new_std(hdl, &cpia2_ctrl_ops, - V4L2_CID_SATURATION, 0, 255, 1, DEFAULT_SATURATION); - v4l2_ctrl_new_std(hdl, &cpia2_ctrl_ops, - V4L2_CID_HFLIP, 0, 1, 1, 0); - v4l2_ctrl_new_std(hdl, &cpia2_ctrl_ops, - V4L2_CID_JPEG_ACTIVE_MARKER, 0, - V4L2_JPEG_ACTIVE_MARKER_DHT, 0, - V4L2_JPEG_ACTIVE_MARKER_DHT); - v4l2_ctrl_new_std(hdl, &cpia2_ctrl_ops, - V4L2_CID_JPEG_COMPRESSION_QUALITY, 1, - 100, 1, 100); - cpia2_usb_alt.def = alternate; - cam->usb_alt = v4l2_ctrl_new_custom(hdl, &cpia2_usb_alt, NULL); - /* VP5 Only */ - if (cam->params.pnp_id.device_type != DEVICE_STV_672) - v4l2_ctrl_new_std(hdl, &cpia2_ctrl_ops, - V4L2_CID_VFLIP, 0, 1, 1, 0); - /* Flicker control only valid for 672 */ - if (cam->params.pnp_id.device_type == DEVICE_STV_672) - v4l2_ctrl_new_std_menu(hdl, &cpia2_ctrl_ops, - V4L2_CID_POWER_LINE_FREQUENCY, - V4L2_CID_POWER_LINE_FREQUENCY_60HZ, - 0, 0); - /* Light control only valid for the QX5 Microscope */ - if (cam->params.pnp_id.product == 0x151) { - cam->top_light = v4l2_ctrl_new_std(hdl, &cpia2_ctrl_ops, - V4L2_CID_ILLUMINATORS_1, - 0, 1, 1, 0); - cam->bottom_light = v4l2_ctrl_new_std(hdl, &cpia2_ctrl_ops, - V4L2_CID_ILLUMINATORS_2, - 0, 1, 1, 0); - v4l2_ctrl_cluster(2, &cam->top_light); - } - - if (hdl->error) { - ret = hdl->error; - v4l2_ctrl_handler_free(hdl); - return ret; - } - - cam->vdev = cpia2_template; - video_set_drvdata(&cam->vdev, cam); - cam->vdev.lock = &cam->v4l2_lock; - cam->vdev.ctrl_handler = hdl; - cam->vdev.v4l2_dev = &cam->v4l2_dev; - cam->vdev.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | - V4L2_CAP_STREAMING; - - reset_camera_struct_v4l(cam); - - /* register v4l device */ - if (video_register_device(&cam->vdev, VFL_TYPE_VIDEO, video_nr) < 0) { - ERR("video_register_device failed\n"); - return -ENODEV; - } - - return 0; -} - -/****************************************************************************** - * - * cpia2_unregister_camera - * - *****************************************************************************/ -void cpia2_unregister_camera(struct camera_data *cam) -{ - video_unregister_device(&cam->vdev); -} - -/****************************************************************************** - * - * check_parameters - * - * Make sure that all user-supplied parameters are sensible - *****************************************************************************/ -static void __init check_parameters(void) -{ - if (buffer_size < PAGE_SIZE) { - buffer_size = PAGE_SIZE; - LOG("buffer_size too small, setting to %d\n", buffer_size); - } else if (buffer_size > 1024 * 1024) { - /* arbitrary upper limiit */ - buffer_size = 1024 * 1024; - LOG("buffer_size ridiculously large, setting to %d\n", - buffer_size); - } else { - buffer_size += PAGE_SIZE - 1; - buffer_size &= ~(PAGE_SIZE - 1); - } - - if (num_buffers < 1) { - num_buffers = 1; - LOG("num_buffers too small, setting to %d\n", num_buffers); - } else if (num_buffers > VIDEO_MAX_FRAME) { - num_buffers = VIDEO_MAX_FRAME; - LOG("num_buffers too large, setting to %d\n", num_buffers); - } - - if (alternate < USBIF_ISO_1 || alternate > USBIF_ISO_6) { - alternate = DEFAULT_ALT; - LOG("alternate specified is invalid, using %d\n", alternate); - } - - if (flicker_mode != 0 && flicker_mode != FLICKER_50 && flicker_mode != FLICKER_60) { - flicker_mode = 0; - LOG("Flicker mode specified is invalid, using %d\n", - flicker_mode); - } - - DBG("Using %d buffers, each %d bytes, alternate=%d\n", - num_buffers, buffer_size, alternate); -} - -/************ Module Stuff ***************/ - -/****************************************************************************** - * - * cpia2_init/module_init - * - *****************************************************************************/ -static int __init cpia2_init(void) -{ - LOG("%s v%s\n", - ABOUT, CPIA_VERSION); - check_parameters(); - return cpia2_usb_init(); -} - -/****************************************************************************** - * - * cpia2_exit/module_exit - * - *****************************************************************************/ -static void __exit cpia2_exit(void) -{ - cpia2_usb_cleanup(); - schedule_timeout(2 * HZ); -} - -module_init(cpia2_init); -module_exit(cpia2_exit); |