diff options
Diffstat (limited to 'drivers/staging/media/deprecated/cpia2/cpia2_usb.c')
| -rw-r--r-- | drivers/staging/media/deprecated/cpia2/cpia2_usb.c | 966 |
1 files changed, 0 insertions, 966 deletions
diff --git a/drivers/staging/media/deprecated/cpia2/cpia2_usb.c b/drivers/staging/media/deprecated/cpia2/cpia2_usb.c deleted file mode 100644 index cba03b286473..000000000000 --- a/drivers/staging/media/deprecated/cpia2/cpia2_usb.c +++ /dev/null @@ -1,966 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/**************************************************************************** - * - * Filename: cpia2_usb.c - * - * Copyright 2001, STMicrolectronics, Inc. - * Contact: steve.miller@st.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> - ****************************************************************************/ - -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/usb.h> -#include <linux/module.h> - -#include "cpia2.h" - -static int frame_sizes[] = { - 0, // USBIF_CMDONLY - 0, // USBIF_BULK - 128, // USBIF_ISO_1 - 384, // USBIF_ISO_2 - 640, // USBIF_ISO_3 - 768, // USBIF_ISO_4 - 896, // USBIF_ISO_5 - 1023, // USBIF_ISO_6 -}; - -#define FRAMES_PER_DESC 10 -#define FRAME_SIZE_PER_DESC frame_sizes[cam->cur_alt] - -static void process_frame(struct camera_data *cam); -static void cpia2_usb_complete(struct urb *urb); -static int cpia2_usb_probe(struct usb_interface *intf, - const struct usb_device_id *id); -static void cpia2_usb_disconnect(struct usb_interface *intf); -static int cpia2_usb_suspend(struct usb_interface *intf, pm_message_t message); -static int cpia2_usb_resume(struct usb_interface *intf); - -static void free_sbufs(struct camera_data *cam); -static void add_APPn(struct camera_data *cam); -static void add_COM(struct camera_data *cam); -static int submit_urbs(struct camera_data *cam); -static int set_alternate(struct camera_data *cam, unsigned int alt); -static int configure_transfer_mode(struct camera_data *cam, unsigned int alt); - -static const struct usb_device_id cpia2_id_table[] = { - {USB_DEVICE(0x0553, 0x0100)}, - {USB_DEVICE(0x0553, 0x0140)}, - {USB_DEVICE(0x0553, 0x0151)}, /* STV0676 */ - {} /* Terminating entry */ -}; -MODULE_DEVICE_TABLE(usb, cpia2_id_table); - -static struct usb_driver cpia2_driver = { - .name = "cpia2", - .probe = cpia2_usb_probe, - .disconnect = cpia2_usb_disconnect, - .suspend = cpia2_usb_suspend, - .resume = cpia2_usb_resume, - .reset_resume = cpia2_usb_resume, - .id_table = cpia2_id_table -}; - - -/****************************************************************************** - * - * process_frame - * - *****************************************************************************/ -static void process_frame(struct camera_data *cam) -{ - static int frame_count; - - unsigned char *inbuff = cam->workbuff->data; - - DBG("Processing frame #%d, current:%d\n", - cam->workbuff->num, cam->curbuff->num); - - if(cam->workbuff->length > cam->workbuff->max_length) - cam->workbuff->max_length = cam->workbuff->length; - - if ((inbuff[0] == 0xFF) && (inbuff[1] == 0xD8)) { - frame_count++; - } else { - cam->workbuff->status = FRAME_ERROR; - DBG("Start of frame not found\n"); - return; - } - - /*** - * Now the output buffer should have a JPEG image in it. - ***/ - if(!cam->first_image_seen) { - /* Always skip the first image after streaming - * starts. It is almost certainly corrupt. */ - cam->first_image_seen = 1; - cam->workbuff->status = FRAME_EMPTY; - return; - } - if (cam->workbuff->length > 3) { - if(cam->mmapped && - cam->workbuff->length < cam->workbuff->max_length) { - /* No junk in the buffers */ - memset(cam->workbuff->data+cam->workbuff->length, - 0, cam->workbuff->max_length- - cam->workbuff->length); - } - cam->workbuff->max_length = cam->workbuff->length; - cam->workbuff->status = FRAME_READY; - - if(!cam->mmapped && cam->num_frames > 2) { - /* During normal reading, the most recent - * frame will be read. If the current frame - * hasn't started reading yet, it will never - * be read, so mark it empty. If the buffer is - * mmapped, or we have few buffers, we need to - * wait for the user to free the buffer. - * - * NOTE: This is not entirely foolproof with 3 - * buffers, but it would take an EXTREMELY - * overloaded system to cause problems (possible - * image data corruption). Basically, it would - * need to take more time to execute cpia2_read - * than it would for the camera to send - * cam->num_frames-2 frames before problems - * could occur. - */ - cam->curbuff->status = FRAME_EMPTY; - } - cam->curbuff = cam->workbuff; - cam->workbuff = cam->workbuff->next; - DBG("Changed buffers, work:%d, current:%d\n", - cam->workbuff->num, cam->curbuff->num); - return; - } else { - DBG("Not enough data for an image.\n"); - } - - cam->workbuff->status = FRAME_ERROR; - return; -} - -/****************************************************************************** - * - * add_APPn - * - * Adds a user specified APPn record - *****************************************************************************/ -static void add_APPn(struct camera_data *cam) -{ - if(cam->APP_len > 0) { - cam->workbuff->data[cam->workbuff->length++] = 0xFF; - cam->workbuff->data[cam->workbuff->length++] = 0xE0+cam->APPn; - cam->workbuff->data[cam->workbuff->length++] = 0; - cam->workbuff->data[cam->workbuff->length++] = cam->APP_len+2; - memcpy(cam->workbuff->data+cam->workbuff->length, - cam->APP_data, cam->APP_len); - cam->workbuff->length += cam->APP_len; - } -} - -/****************************************************************************** - * - * add_COM - * - * Adds a user specified COM record - *****************************************************************************/ -static void add_COM(struct camera_data *cam) -{ - if(cam->COM_len > 0) { - cam->workbuff->data[cam->workbuff->length++] = 0xFF; - cam->workbuff->data[cam->workbuff->length++] = 0xFE; - cam->workbuff->data[cam->workbuff->length++] = 0; - cam->workbuff->data[cam->workbuff->length++] = cam->COM_len+2; - memcpy(cam->workbuff->data+cam->workbuff->length, - cam->COM_data, cam->COM_len); - cam->workbuff->length += cam->COM_len; - } -} - -/****************************************************************************** - * - * cpia2_usb_complete - * - * callback when incoming packet is received - *****************************************************************************/ -static void cpia2_usb_complete(struct urb *urb) -{ - int i; - unsigned char *cdata; - static bool frame_ready = false; - struct camera_data *cam = (struct camera_data *) urb->context; - - if (urb->status!=0) { - if (!(urb->status == -ENOENT || - urb->status == -ECONNRESET || - urb->status == -ESHUTDOWN)) - { - DBG("urb->status = %d!\n", urb->status); - } - DBG("Stopping streaming\n"); - return; - } - - if (!cam->streaming || !video_is_registered(&cam->vdev)) { - LOG("Will now stop the streaming: streaming = %d, present=%d\n", - cam->streaming, video_is_registered(&cam->vdev)); - return; - } - - /*** - * Packet collater - ***/ - //DBG("Collating %d packets\n", urb->number_of_packets); - for (i = 0; i < urb->number_of_packets; i++) { - u16 checksum, iso_checksum; - int j; - int n = urb->iso_frame_desc[i].actual_length; - int st = urb->iso_frame_desc[i].status; - - if(cam->workbuff->status == FRAME_READY) { - struct framebuf *ptr; - /* Try to find an available buffer */ - DBG("workbuff full, searching\n"); - for (ptr = cam->workbuff->next; - ptr != cam->workbuff; - ptr = ptr->next) - { - if (ptr->status == FRAME_EMPTY) { - ptr->status = FRAME_READING; - ptr->length = 0; - break; - } - } - if (ptr == cam->workbuff) - break; /* No READING or EMPTY buffers left */ - - cam->workbuff = ptr; - } - - if (cam->workbuff->status == FRAME_EMPTY || - cam->workbuff->status == FRAME_ERROR) { - cam->workbuff->status = FRAME_READING; - cam->workbuff->length = 0; - } - - //DBG(" Packet %d length = %d, status = %d\n", i, n, st); - cdata = urb->transfer_buffer + urb->iso_frame_desc[i].offset; - - if (st) { - LOG("cpia2 data error: [%d] len=%d, status = %d\n", - i, n, st); - if(!ALLOW_CORRUPT) - cam->workbuff->status = FRAME_ERROR; - continue; - } - - if(n<=2) - continue; - - checksum = 0; - for(j=0; j<n-2; ++j) - checksum += cdata[j]; - iso_checksum = cdata[j] + cdata[j+1]*256; - if(checksum != iso_checksum) { - LOG("checksum mismatch: [%d] len=%d, calculated = %x, checksum = %x\n", - i, n, (int)checksum, (int)iso_checksum); - if(!ALLOW_CORRUPT) { - cam->workbuff->status = FRAME_ERROR; - continue; - } - } - n -= 2; - - if(cam->workbuff->status != FRAME_READING) { - if((0xFF == cdata[0] && 0xD8 == cdata[1]) || - (0xD8 == cdata[0] && 0xFF == cdata[1] && - 0 != cdata[2])) { - /* frame is skipped, but increment total - * frame count anyway */ - cam->frame_count++; - } - DBG("workbuff not reading, status=%d\n", - cam->workbuff->status); - continue; - } - - if (cam->frame_size < cam->workbuff->length + n) { - ERR("buffer overflow! length: %d, n: %d\n", - cam->workbuff->length, n); - cam->workbuff->status = FRAME_ERROR; - if(cam->workbuff->length > cam->workbuff->max_length) - cam->workbuff->max_length = - cam->workbuff->length; - continue; - } - - if (cam->workbuff->length == 0) { - int data_offset; - if ((0xD8 == cdata[0]) && (0xFF == cdata[1])) { - data_offset = 1; - } else if((0xFF == cdata[0]) && (0xD8 == cdata[1]) - && (0xFF == cdata[2])) { - data_offset = 2; - } else { - DBG("Ignoring packet, not beginning!\n"); - continue; - } - DBG("Start of frame pattern found\n"); - cam->workbuff->ts = ktime_get_ns(); - cam->workbuff->seq = cam->frame_count++; - cam->workbuff->data[0] = 0xFF; - cam->workbuff->data[1] = 0xD8; - cam->workbuff->length = 2; - add_APPn(cam); - add_COM(cam); - memcpy(cam->workbuff->data+cam->workbuff->length, - cdata+data_offset, n-data_offset); - cam->workbuff->length += n-data_offset; - } else if (cam->workbuff->length > 0) { - memcpy(cam->workbuff->data + cam->workbuff->length, - cdata, n); - cam->workbuff->length += n; - } - - if ((cam->workbuff->length >= 3) && - (cam->workbuff->data[cam->workbuff->length - 3] == 0xFF) && - (cam->workbuff->data[cam->workbuff->length - 2] == 0xD9) && - (cam->workbuff->data[cam->workbuff->length - 1] == 0xFF)) { - frame_ready = true; - cam->workbuff->data[cam->workbuff->length - 1] = 0; - cam->workbuff->length -= 1; - } else if ((cam->workbuff->length >= 2) && - (cam->workbuff->data[cam->workbuff->length - 2] == 0xFF) && - (cam->workbuff->data[cam->workbuff->length - 1] == 0xD9)) { - frame_ready = true; - } - - if (frame_ready) { - DBG("Workbuff image size = %d\n",cam->workbuff->length); - process_frame(cam); - - frame_ready = false; - - if (waitqueue_active(&cam->wq_stream)) - wake_up_interruptible(&cam->wq_stream); - } - } - - if(cam->streaming) { - /* resubmit */ - urb->dev = cam->dev; - if ((i = usb_submit_urb(urb, GFP_ATOMIC)) != 0) - ERR("%s: usb_submit_urb ret %d!\n", __func__, i); - } -} - -/****************************************************************************** - * - * configure_transfer_mode - * - *****************************************************************************/ -static int configure_transfer_mode(struct camera_data *cam, unsigned int alt) -{ - static unsigned char iso_regs[8][4] = { - {0x00, 0x00, 0x00, 0x00}, - {0x00, 0x00, 0x00, 0x00}, - {0xB9, 0x00, 0x00, 0x7E}, - {0xB9, 0x00, 0x01, 0x7E}, - {0xB9, 0x00, 0x02, 0x7E}, - {0xB9, 0x00, 0x02, 0xFE}, - {0xB9, 0x00, 0x03, 0x7E}, - {0xB9, 0x00, 0x03, 0xFD} - }; - struct cpia2_command cmd; - unsigned char reg; - - if (!video_is_registered(&cam->vdev)) - return -ENODEV; - - /*** - * Write the isoc registers according to the alternate selected - ***/ - cmd.direction = TRANSFER_WRITE; - cmd.buffer.block_data[0] = iso_regs[alt][0]; - cmd.buffer.block_data[1] = iso_regs[alt][1]; - cmd.buffer.block_data[2] = iso_regs[alt][2]; - cmd.buffer.block_data[3] = iso_regs[alt][3]; - cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC; - cmd.start = CPIA2_VC_USB_ISOLIM; - cmd.reg_count = 4; - cpia2_send_command(cam, &cmd); - - /*** - * Enable relevant streams before starting polling. - * First read USB Stream Config Register. - ***/ - cmd.direction = TRANSFER_READ; - cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC; - cmd.start = CPIA2_VC_USB_STRM; - cmd.reg_count = 1; - cpia2_send_command(cam, &cmd); - reg = cmd.buffer.block_data[0]; - - /* Clear iso, bulk, and int */ - reg &= ~(CPIA2_VC_USB_STRM_BLK_ENABLE | - CPIA2_VC_USB_STRM_ISO_ENABLE | - CPIA2_VC_USB_STRM_INT_ENABLE); - - if (alt == USBIF_BULK) { - DBG("Enabling bulk xfer\n"); - reg |= CPIA2_VC_USB_STRM_BLK_ENABLE; /* Enable Bulk */ - cam->xfer_mode = XFER_BULK; - } else if (alt >= USBIF_ISO_1) { - DBG("Enabling ISOC xfer\n"); - reg |= CPIA2_VC_USB_STRM_ISO_ENABLE; - cam->xfer_mode = XFER_ISOC; - } - - cmd.buffer.block_data[0] = reg; - cmd.direction = TRANSFER_WRITE; - cmd.start = CPIA2_VC_USB_STRM; - cmd.reg_count = 1; - cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC; - cpia2_send_command(cam, &cmd); - - return 0; -} - -/****************************************************************************** - * - * cpia2_usb_change_streaming_alternate - * - *****************************************************************************/ -int cpia2_usb_change_streaming_alternate(struct camera_data *cam, - unsigned int alt) -{ - int ret = 0; - - if(alt < USBIF_ISO_1 || alt > USBIF_ISO_6) - return -EINVAL; - - if(alt == cam->params.camera_state.stream_mode) - return 0; - - cpia2_usb_stream_pause(cam); - - configure_transfer_mode(cam, alt); - - cam->params.camera_state.stream_mode = alt; - - /* Reset the camera to prevent image quality degradation */ - cpia2_reset_camera(cam); - - cpia2_usb_stream_resume(cam); - - return ret; -} - -/****************************************************************************** - * - * set_alternate - * - *****************************************************************************/ -static int set_alternate(struct camera_data *cam, unsigned int alt) -{ - int ret = 0; - - if(alt == cam->cur_alt) - return 0; - - if (cam->cur_alt != USBIF_CMDONLY) { - DBG("Changing from alt %d to %d\n", cam->cur_alt, USBIF_CMDONLY); - ret = usb_set_interface(cam->dev, cam->iface, USBIF_CMDONLY); - if (ret != 0) - return ret; - } - if (alt != USBIF_CMDONLY) { - DBG("Changing from alt %d to %d\n", USBIF_CMDONLY, alt); - ret = usb_set_interface(cam->dev, cam->iface, alt); - if (ret != 0) - return ret; - } - - cam->old_alt = cam->cur_alt; - cam->cur_alt = alt; - - return ret; -} - -/****************************************************************************** - * - * free_sbufs - * - * Free all cam->sbuf[]. All non-NULL .data and .urb members that are non-NULL - * are assumed to be allocated. Non-NULL .urb members are also assumed to be - * submitted (and must therefore be killed before they are freed). - *****************************************************************************/ -static void free_sbufs(struct camera_data *cam) -{ - int i; - - for (i = 0; i < NUM_SBUF; i++) { - if(cam->sbuf[i].urb) { - usb_kill_urb(cam->sbuf[i].urb); - usb_free_urb(cam->sbuf[i].urb); - cam->sbuf[i].urb = NULL; - } - if(cam->sbuf[i].data) { - kfree(cam->sbuf[i].data); - cam->sbuf[i].data = NULL; - } - } -} - -/******* -* Convenience functions -*******/ -/**************************************************************************** - * - * write_packet - * - ***************************************************************************/ -static int write_packet(struct usb_device *udev, - u8 request, u8 * registers, u16 start, size_t size) -{ - unsigned char *buf; - int ret; - - if (!registers || size <= 0) - return -EINVAL; - - buf = kmemdup(registers, size, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - ret = usb_control_msg(udev, - usb_sndctrlpipe(udev, 0), - request, - USB_TYPE_VENDOR | USB_RECIP_DEVICE, - start, /* value */ - 0, /* index */ - buf, /* buffer */ - size, - 1000); - - kfree(buf); - return ret; -} - -/**************************************************************************** - * - * read_packet - * - ***************************************************************************/ -static int read_packet(struct usb_device *udev, - u8 request, u8 * registers, u16 start, size_t size) -{ - unsigned char *buf; - int ret; - - if (!registers || size <= 0) - return -EINVAL; - - buf = kmalloc(size, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - ret = usb_control_msg(udev, - usb_rcvctrlpipe(udev, 0), - request, - USB_DIR_IN|USB_TYPE_VENDOR|USB_RECIP_DEVICE, - start, /* value */ - 0, /* index */ - buf, /* buffer */ - size, - 1000); - - if (ret >= 0) - memcpy(registers, buf, size); - - kfree(buf); - - return ret; -} - -/****************************************************************************** - * - * cpia2_usb_transfer_cmd - * - *****************************************************************************/ -int cpia2_usb_transfer_cmd(struct camera_data *cam, - void *registers, - u8 request, u8 start, u8 count, u8 direction) -{ - int err = 0; - struct usb_device *udev = cam->dev; - - if (!udev) { - ERR("%s: Internal driver error: udev is NULL\n", __func__); - return -EINVAL; - } - - if (!registers) { - ERR("%s: Internal driver error: register array is NULL\n", __func__); - return -EINVAL; - } - - if (direction == TRANSFER_READ) { - err = read_packet(udev, request, (u8 *)registers, start, count); - if (err > 0) - err = 0; - } else if (direction == TRANSFER_WRITE) { - err =write_packet(udev, request, (u8 *)registers, start, count); - if (err < 0) { - LOG("Control message failed, err val = %d\n", err); - LOG("Message: request = 0x%0X, start = 0x%0X\n", - request, start); - LOG("Message: count = %d, register[0] = 0x%0X\n", - count, ((unsigned char *) registers)[0]); - } else - err=0; - } else { - LOG("Unexpected first byte of direction: %d\n", - direction); - return -EINVAL; - } - - if(err != 0) - LOG("Unexpected error: %d\n", err); - return err; -} - - -/****************************************************************************** - * - * submit_urbs - * - *****************************************************************************/ -static int submit_urbs(struct camera_data *cam) -{ - struct urb *urb; - int fx, err, i, j; - - for(i=0; i<NUM_SBUF; ++i) { - if (cam->sbuf[i].data) - continue; - cam->sbuf[i].data = - kmalloc_array(FRAME_SIZE_PER_DESC, FRAMES_PER_DESC, - GFP_KERNEL); - if (!cam->sbuf[i].data) { - while (--i >= 0) { - kfree(cam->sbuf[i].data); - cam->sbuf[i].data = NULL; - } - return -ENOMEM; - } - } - - /* We double buffer the Isoc lists, and also know the polling - * interval is every frame (1 == (1 << (bInterval -1))). - */ - for(i=0; i<NUM_SBUF; ++i) { - if(cam->sbuf[i].urb) { - continue; - } - urb = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL); - if (!urb) { - for (j = 0; j < i; j++) - usb_free_urb(cam->sbuf[j].urb); - for (j = 0; j < NUM_SBUF; j++) { - kfree(cam->sbuf[j].data); - cam->sbuf[j].data = NULL; - } - return -ENOMEM; - } - - cam->sbuf[i].urb = urb; - urb->dev = cam->dev; - urb->context = cam; - urb->pipe = usb_rcvisocpipe(cam->dev, 1 /*ISOC endpoint*/); - urb->transfer_flags = URB_ISO_ASAP; - urb->transfer_buffer = cam->sbuf[i].data; - urb->complete = cpia2_usb_complete; - urb->number_of_packets = FRAMES_PER_DESC; - urb->interval = 1; - urb->transfer_buffer_length = - FRAME_SIZE_PER_DESC * FRAMES_PER_DESC; - - for (fx = 0; fx < FRAMES_PER_DESC; fx++) { - urb->iso_frame_desc[fx].offset = - FRAME_SIZE_PER_DESC * fx; - urb->iso_frame_desc[fx].length = FRAME_SIZE_PER_DESC; - } - } - - - /* Queue the ISO urbs, and resubmit in the completion handler */ - for(i=0; i<NUM_SBUF; ++i) { - err = usb_submit_urb(cam->sbuf[i].urb, GFP_KERNEL); - if (err) { - ERR("usb_submit_urb[%d]() = %d\n", i, err); - return err; - } - } - - return 0; -} - -/****************************************************************************** - * - * cpia2_usb_stream_start - * - *****************************************************************************/ -int cpia2_usb_stream_start(struct camera_data *cam, unsigned int alternate) -{ - int ret; - int old_alt; - - if(cam->streaming) - return 0; - - if (cam->flush) { - int i; - DBG("Flushing buffers\n"); - for(i=0; i<cam->num_frames; ++i) { - cam->buffers[i].status = FRAME_EMPTY; - cam->buffers[i].length = 0; - } - cam->curbuff = &cam->buffers[0]; - cam->workbuff = cam->curbuff->next; - cam->flush = false; - } - - old_alt = cam->params.camera_state.stream_mode; - cam->params.camera_state.stream_mode = 0; - ret = cpia2_usb_change_streaming_alternate(cam, alternate); - if (ret < 0) { - int ret2; - ERR("cpia2_usb_change_streaming_alternate() = %d!\n", ret); - cam->params.camera_state.stream_mode = old_alt; - ret2 = set_alternate(cam, USBIF_CMDONLY); - if (ret2 < 0) { - ERR("cpia2_usb_change_streaming_alternate(%d) =%d has already failed. Then tried to call set_alternate(USBIF_CMDONLY) = %d.\n", - alternate, ret, ret2); - } - } else { - cam->frame_count = 0; - cam->streaming = 1; - ret = cpia2_usb_stream_resume(cam); - } - return ret; -} - -/****************************************************************************** - * - * cpia2_usb_stream_pause - * - *****************************************************************************/ -int cpia2_usb_stream_pause(struct camera_data *cam) -{ - int ret = 0; - if(cam->streaming) { - free_sbufs(cam); - ret = set_alternate(cam, USBIF_CMDONLY); - } - return ret; -} - -/****************************************************************************** - * - * cpia2_usb_stream_resume - * - *****************************************************************************/ -int cpia2_usb_stream_resume(struct camera_data *cam) -{ - int ret = 0; - if(cam->streaming) { - cam->first_image_seen = 0; - ret = set_alternate(cam, cam->params.camera_state.stream_mode); - if(ret == 0) { - /* for some reason the user effects need to be set - again when starting streaming. */ - cpia2_do_command(cam, CPIA2_CMD_SET_USER_EFFECTS, TRANSFER_WRITE, - cam->params.vp_params.user_effects); - ret = submit_urbs(cam); - } - } - return ret; -} - -/****************************************************************************** - * - * cpia2_usb_stream_stop - * - *****************************************************************************/ -int cpia2_usb_stream_stop(struct camera_data *cam) -{ - int ret; - - ret = cpia2_usb_stream_pause(cam); - cam->streaming = 0; - configure_transfer_mode(cam, 0); - return ret; -} - -/****************************************************************************** - * - * cpia2_usb_probe - * - * Probe and initialize. - *****************************************************************************/ -static int cpia2_usb_probe(struct usb_interface *intf, - const struct usb_device_id *id) -{ - struct usb_device *udev = interface_to_usbdev(intf); - struct usb_interface_descriptor *interface; - struct camera_data *cam; - int ret; - - /* A multi-config CPiA2 camera? */ - if (udev->descriptor.bNumConfigurations != 1) - return -ENODEV; - interface = &intf->cur_altsetting->desc; - - /* If we get to this point, we found a CPiA2 camera */ - LOG("CPiA2 USB camera found\n"); - - cam = cpia2_init_camera_struct(intf); - if (cam == NULL) - return -ENOMEM; - - cam->dev = udev; - cam->iface = interface->bInterfaceNumber; - - ret = set_alternate(cam, USBIF_CMDONLY); - if (ret < 0) { - ERR("%s: usb_set_interface error (ret = %d)\n", __func__, ret); - goto alt_err; - } - - - if((ret = cpia2_init_camera(cam)) < 0) { - ERR("%s: failed to initialize cpia2 camera (ret = %d)\n", __func__, ret); - goto alt_err; - } - LOG(" CPiA Version: %d.%02d (%d.%d)\n", - cam->params.version.firmware_revision_hi, - cam->params.version.firmware_revision_lo, - cam->params.version.asic_id, - cam->params.version.asic_rev); - LOG(" CPiA PnP-ID: %04x:%04x:%04x\n", - cam->params.pnp_id.vendor, - cam->params.pnp_id.product, - cam->params.pnp_id.device_revision); - LOG(" SensorID: %d.(version %d)\n", - cam->params.version.sensor_flags, - cam->params.version.sensor_rev); - - usb_set_intfdata(intf, cam); - - ret = cpia2_register_camera(cam); - if (ret < 0) { - ERR("%s: Failed to register cpia2 camera (ret = %d)\n", __func__, ret); - goto alt_err; - } - - return 0; - -alt_err: - cpia2_deinit_camera_struct(cam, intf); - return ret; -} - -/****************************************************************************** - * - * cpia2_disconnect - * - *****************************************************************************/ -static void cpia2_usb_disconnect(struct usb_interface *intf) -{ - struct camera_data *cam = usb_get_intfdata(intf); - usb_set_intfdata(intf, NULL); - - DBG("Stopping stream\n"); - cpia2_usb_stream_stop(cam); - - mutex_lock(&cam->v4l2_lock); - DBG("Unregistering camera\n"); - cpia2_unregister_camera(cam); - v4l2_device_disconnect(&cam->v4l2_dev); - mutex_unlock(&cam->v4l2_lock); - - if(cam->buffers) { - DBG("Wakeup waiting processes\n"); - cam->curbuff->status = FRAME_READY; - cam->curbuff->length = 0; - wake_up_interruptible(&cam->wq_stream); - } - - v4l2_device_put(&cam->v4l2_dev); - - LOG("CPiA2 camera disconnected.\n"); -} - -static int cpia2_usb_suspend(struct usb_interface *intf, pm_message_t message) -{ - struct camera_data *cam = usb_get_intfdata(intf); - - mutex_lock(&cam->v4l2_lock); - if (cam->streaming) { - cpia2_usb_stream_stop(cam); - cam->streaming = 1; - } - mutex_unlock(&cam->v4l2_lock); - - dev_info(&intf->dev, "going into suspend..\n"); - return 0; -} - -/* Resume device - start device. */ -static int cpia2_usb_resume(struct usb_interface *intf) -{ - struct camera_data *cam = usb_get_intfdata(intf); - - mutex_lock(&cam->v4l2_lock); - v4l2_ctrl_handler_setup(&cam->hdl); - if (cam->streaming) { - cam->streaming = 0; - cpia2_usb_stream_start(cam, - cam->params.camera_state.stream_mode); - } - mutex_unlock(&cam->v4l2_lock); - - dev_info(&intf->dev, "coming out of suspend..\n"); - return 0; -} - -/****************************************************************************** - * - * usb_cpia2_init - * - *****************************************************************************/ -int cpia2_usb_init(void) -{ - return usb_register(&cpia2_driver); -} - -/****************************************************************************** - * - * usb_cpia_cleanup - * - *****************************************************************************/ -void cpia2_usb_cleanup(void) -{ - schedule_timeout(2 * HZ); - usb_deregister(&cpia2_driver); -} |