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path: root/drivers/media/video/cpia2/cpia2_usb.c
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Diffstat (limited to 'drivers/media/video/cpia2/cpia2_usb.c')
-rw-r--r--drivers/media/video/cpia2/cpia2_usb.c955
1 files changed, 0 insertions, 955 deletions
diff --git a/drivers/media/video/cpia2/cpia2_usb.c b/drivers/media/video/cpia2/cpia2_usb.c
deleted file mode 100644
index 95b5d6e7cdc4..000000000000
--- a/drivers/media/video/cpia2/cpia2_usb.c
+++ /dev/null
@@ -1,955 +0,0 @@
-/****************************************************************************
- *
- * 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.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * 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 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 int 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");
- do_gettimeofday(&cam->workbuff->timestamp);
- 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)
-{
- if (!registers || size <= 0)
- return -EINVAL;
-
- return usb_control_msg(udev,
- usb_sndctrlpipe(udev, 0),
- request,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- start, /* value */
- 0, /* index */
- registers, /* buffer */
- size,
- HZ);
-}
-
-/****************************************************************************
- *
- * read_packet
- *
- ***************************************************************************/
-static int read_packet(struct usb_device *udev,
- u8 request, u8 * registers, u16 start, size_t size)
-{
- if (!registers || size <= 0)
- return -EINVAL;
-
- return usb_control_msg(udev,
- usb_rcvctrlpipe(udev, 0),
- request,
- USB_DIR_IN|USB_TYPE_VENDOR|USB_RECIP_DEVICE,
- start, /* value */
- 0, /* index */
- registers, /* buffer */
- size,
- HZ);
-}
-
-/******************************************************************************
- *
- * 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(FRAMES_PER_DESC * FRAME_SIZE_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) {
- ERR("%s: usb_alloc_urb error!\n", __func__);
- for (j = 0; j < i; j++)
- usb_free_urb(cam->sbuf[j].urb);
- 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);
- kfree(cam);
- return ret;
- }
-
-
- if((ret = cpia2_init_camera(cam)) < 0) {
- ERR("%s: failed to initialize cpia2 camera (ret = %d)\n", __func__, ret);
- kfree(cam);
- return ret;
- }
- 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);
- kfree(cam);
- return ret;
- }
-
- return 0;
-}
-
-/******************************************************************************
- *
- * 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);
- v4l2_device_put(&cam->v4l2_dev);
-
- if(cam->buffers) {
- DBG("Wakeup waiting processes\n");
- cam->curbuff->status = FRAME_READY;
- cam->curbuff->length = 0;
- if (waitqueue_active(&cam->wq_stream))
- wake_up_interruptible(&cam->wq_stream);
- }
-
- DBG("Releasing interface\n");
- usb_driver_release_interface(&cpia2_driver, intf);
-
- 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);
-}