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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-08-14 07:13:22 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-08-15 23:25:07 +0400
commit0c0d06cac63ee327ceaab4b5ffe2206574ab86bd (patch)
treee759f0dc3185d97f2a0c6b5cd5e32ea6faa74d40 /drivers/media/video/gspca/gspca.c
parent84cfe9e79bd5ac11c963f4841158454fefa872f6 (diff)
downloadlinux-0c0d06cac63ee327ceaab4b5ffe2206574ab86bd.tar.xz
[media] rename most media/video usb drivers to media/usb
Rename all USB drivers with their own directory under drivers/media/video into drivers/media/usb and update the building system. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/gspca/gspca.c')
-rw-r--r--drivers/media/video/gspca/gspca.c2456
1 files changed, 0 insertions, 2456 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
deleted file mode 100644
index d4e8343f5b10..000000000000
--- a/drivers/media/video/gspca/gspca.c
+++ /dev/null
@@ -1,2456 +0,0 @@
-/*
- * Main USB camera driver
- *
- * Copyright (C) 2008-2011 Jean-François Moine <http://moinejf.free.fr>
- *
- * Camera button input handling by Márton Németh
- * Copyright (C) 2009-2010 Márton Németh <nm127@freemail.hu>
- *
- * 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.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#define GSPCA_VERSION "2.14.0"
-
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/vmalloc.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/pagemap.h>
-#include <linux/io.h>
-#include <asm/page.h>
-#include <linux/uaccess.h>
-#include <linux/ktime.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-ctrls.h>
-#include <media/v4l2-fh.h>
-#include <media/v4l2-event.h>
-
-#include "gspca.h"
-
-#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
-#include <linux/input.h>
-#include <linux/usb/input.h>
-#endif
-
-/* global values */
-#define DEF_NURBS 3 /* default number of URBs */
-#if DEF_NURBS > MAX_NURBS
-#error "DEF_NURBS too big"
-#endif
-
-MODULE_AUTHOR("Jean-François Moine <http://moinejf.free.fr>");
-MODULE_DESCRIPTION("GSPCA USB Camera Driver");
-MODULE_LICENSE("GPL");
-MODULE_VERSION(GSPCA_VERSION);
-
-#ifdef GSPCA_DEBUG
-int gspca_debug = D_ERR | D_PROBE;
-EXPORT_SYMBOL(gspca_debug);
-
-static void PDEBUG_MODE(char *txt, __u32 pixfmt, int w, int h)
-{
- if ((pixfmt >> 24) >= '0' && (pixfmt >> 24) <= 'z') {
- PDEBUG(D_CONF|D_STREAM, "%s %c%c%c%c %dx%d",
- txt,
- pixfmt & 0xff,
- (pixfmt >> 8) & 0xff,
- (pixfmt >> 16) & 0xff,
- pixfmt >> 24,
- w, h);
- } else {
- PDEBUG(D_CONF|D_STREAM, "%s 0x%08x %dx%d",
- txt,
- pixfmt,
- w, h);
- }
-}
-#else
-#define PDEBUG_MODE(txt, pixfmt, w, h)
-#endif
-
-/* specific memory types - !! should be different from V4L2_MEMORY_xxx */
-#define GSPCA_MEMORY_NO 0 /* V4L2_MEMORY_xxx starts from 1 */
-#define GSPCA_MEMORY_READ 7
-
-#define BUF_ALL_FLAGS (V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE)
-
-/*
- * VMA operations.
- */
-static void gspca_vm_open(struct vm_area_struct *vma)
-{
- struct gspca_frame *frame = vma->vm_private_data;
-
- frame->vma_use_count++;
- frame->v4l2_buf.flags |= V4L2_BUF_FLAG_MAPPED;
-}
-
-static void gspca_vm_close(struct vm_area_struct *vma)
-{
- struct gspca_frame *frame = vma->vm_private_data;
-
- if (--frame->vma_use_count <= 0)
- frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_MAPPED;
-}
-
-static const struct vm_operations_struct gspca_vm_ops = {
- .open = gspca_vm_open,
- .close = gspca_vm_close,
-};
-
-/*
- * Input and interrupt endpoint handling functions
- */
-#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
-static void int_irq(struct urb *urb)
-{
- struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context;
- int ret;
-
- ret = urb->status;
- switch (ret) {
- case 0:
- if (gspca_dev->sd_desc->int_pkt_scan(gspca_dev,
- urb->transfer_buffer, urb->actual_length) < 0) {
- PDEBUG(D_ERR, "Unknown packet received");
- }
- break;
-
- case -ENOENT:
- case -ECONNRESET:
- case -ENODEV:
- case -ESHUTDOWN:
- /* Stop is requested either by software or hardware is gone,
- * keep the ret value non-zero and don't resubmit later.
- */
- break;
-
- default:
- PDEBUG(D_ERR, "URB error %i, resubmitting", urb->status);
- urb->status = 0;
- ret = 0;
- }
-
- if (ret == 0) {
- ret = usb_submit_urb(urb, GFP_ATOMIC);
- if (ret < 0)
- pr_err("Resubmit URB failed with error %i\n", ret);
- }
-}
-
-static int gspca_input_connect(struct gspca_dev *dev)
-{
- struct input_dev *input_dev;
- int err = 0;
-
- dev->input_dev = NULL;
- if (dev->sd_desc->int_pkt_scan || dev->sd_desc->other_input) {
- input_dev = input_allocate_device();
- if (!input_dev)
- return -ENOMEM;
-
- usb_make_path(dev->dev, dev->phys, sizeof(dev->phys));
- strlcat(dev->phys, "/input0", sizeof(dev->phys));
-
- input_dev->name = dev->sd_desc->name;
- input_dev->phys = dev->phys;
-
- usb_to_input_id(dev->dev, &input_dev->id);
-
- input_dev->evbit[0] = BIT_MASK(EV_KEY);
- input_dev->keybit[BIT_WORD(KEY_CAMERA)] = BIT_MASK(KEY_CAMERA);
- input_dev->dev.parent = &dev->dev->dev;
-
- err = input_register_device(input_dev);
- if (err) {
- pr_err("Input device registration failed with error %i\n",
- err);
- input_dev->dev.parent = NULL;
- input_free_device(input_dev);
- } else {
- dev->input_dev = input_dev;
- }
- }
-
- return err;
-}
-
-static int alloc_and_submit_int_urb(struct gspca_dev *gspca_dev,
- struct usb_endpoint_descriptor *ep)
-{
- unsigned int buffer_len;
- int interval;
- struct urb *urb;
- struct usb_device *dev;
- void *buffer = NULL;
- int ret = -EINVAL;
-
- buffer_len = le16_to_cpu(ep->wMaxPacketSize);
- interval = ep->bInterval;
- PDEBUG(D_CONF, "found int in endpoint: 0x%x, "
- "buffer_len=%u, interval=%u",
- ep->bEndpointAddress, buffer_len, interval);
-
- dev = gspca_dev->dev;
-
- urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!urb) {
- ret = -ENOMEM;
- goto error;
- }
-
- buffer = usb_alloc_coherent(dev, buffer_len,
- GFP_KERNEL, &urb->transfer_dma);
- if (!buffer) {
- ret = -ENOMEM;
- goto error_buffer;
- }
- usb_fill_int_urb(urb, dev,
- usb_rcvintpipe(dev, ep->bEndpointAddress),
- buffer, buffer_len,
- int_irq, (void *)gspca_dev, interval);
- urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
- ret = usb_submit_urb(urb, GFP_KERNEL);
- if (ret < 0) {
- PDEBUG(D_ERR, "submit int URB failed with error %i", ret);
- goto error_submit;
- }
- gspca_dev->int_urb = urb;
- return ret;
-
-error_submit:
- usb_free_coherent(dev,
- urb->transfer_buffer_length,
- urb->transfer_buffer,
- urb->transfer_dma);
-error_buffer:
- usb_free_urb(urb);
-error:
- return ret;
-}
-
-static void gspca_input_create_urb(struct gspca_dev *gspca_dev)
-{
- struct usb_interface *intf;
- struct usb_host_interface *intf_desc;
- struct usb_endpoint_descriptor *ep;
- int i;
-
- if (gspca_dev->sd_desc->int_pkt_scan) {
- intf = usb_ifnum_to_if(gspca_dev->dev, gspca_dev->iface);
- intf_desc = intf->cur_altsetting;
- for (i = 0; i < intf_desc->desc.bNumEndpoints; i++) {
- ep = &intf_desc->endpoint[i].desc;
- if (usb_endpoint_dir_in(ep) &&
- usb_endpoint_xfer_int(ep)) {
-
- alloc_and_submit_int_urb(gspca_dev, ep);
- break;
- }
- }
- }
-}
-
-static void gspca_input_destroy_urb(struct gspca_dev *gspca_dev)
-{
- struct urb *urb;
-
- urb = gspca_dev->int_urb;
- if (urb) {
- gspca_dev->int_urb = NULL;
- usb_kill_urb(urb);
- usb_free_coherent(gspca_dev->dev,
- urb->transfer_buffer_length,
- urb->transfer_buffer,
- urb->transfer_dma);
- usb_free_urb(urb);
- }
-}
-#else
-static inline void gspca_input_destroy_urb(struct gspca_dev *gspca_dev)
-{
-}
-
-static inline void gspca_input_create_urb(struct gspca_dev *gspca_dev)
-{
-}
-
-static inline int gspca_input_connect(struct gspca_dev *dev)
-{
- return 0;
-}
-#endif
-
-/*
- * fill a video frame from an URB and resubmit
- */
-static void fill_frame(struct gspca_dev *gspca_dev,
- struct urb *urb)
-{
- u8 *data; /* address of data in the iso message */
- int i, len, st;
- cam_pkt_op pkt_scan;
-
- if (urb->status != 0) {
- if (urb->status == -ESHUTDOWN)
- return; /* disconnection */
-#ifdef CONFIG_PM
- if (gspca_dev->frozen)
- return;
-#endif
- PDEBUG(D_ERR|D_PACK, "urb status: %d", urb->status);
- urb->status = 0;
- goto resubmit;
- }
- pkt_scan = gspca_dev->sd_desc->pkt_scan;
- for (i = 0; i < urb->number_of_packets; i++) {
- len = urb->iso_frame_desc[i].actual_length;
-
- /* check the packet status and length */
- st = urb->iso_frame_desc[i].status;
- if (st) {
- pr_err("ISOC data error: [%d] len=%d, status=%d\n",
- i, len, st);
- gspca_dev->last_packet_type = DISCARD_PACKET;
- continue;
- }
- if (len == 0) {
- if (gspca_dev->empty_packet == 0)
- gspca_dev->empty_packet = 1;
- continue;
- }
-
- /* let the packet be analyzed by the subdriver */
- PDEBUG(D_PACK, "packet [%d] o:%d l:%d",
- i, urb->iso_frame_desc[i].offset, len);
- data = (u8 *) urb->transfer_buffer
- + urb->iso_frame_desc[i].offset;
- pkt_scan(gspca_dev, data, len);
- }
-
-resubmit:
- /* resubmit the URB */
- st = usb_submit_urb(urb, GFP_ATOMIC);
- if (st < 0)
- pr_err("usb_submit_urb() ret %d\n", st);
-}
-
-/*
- * ISOC message interrupt from the USB device
- *
- * Analyse each packet and call the subdriver for copy to the frame buffer.
- */
-static void isoc_irq(struct urb *urb)
-{
- struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context;
-
- PDEBUG(D_PACK, "isoc irq");
- if (!gspca_dev->streaming)
- return;
- fill_frame(gspca_dev, urb);
-}
-
-/*
- * bulk message interrupt from the USB device
- */
-static void bulk_irq(struct urb *urb)
-{
- struct gspca_dev *gspca_dev = (struct gspca_dev *) urb->context;
- int st;
-
- PDEBUG(D_PACK, "bulk irq");
- if (!gspca_dev->streaming)
- return;
- switch (urb->status) {
- case 0:
- break;
- case -ESHUTDOWN:
- return; /* disconnection */
- default:
-#ifdef CONFIG_PM
- if (gspca_dev->frozen)
- return;
-#endif
- PDEBUG(D_ERR|D_PACK, "urb status: %d", urb->status);
- urb->status = 0;
- goto resubmit;
- }
-
- PDEBUG(D_PACK, "packet l:%d", urb->actual_length);
- gspca_dev->sd_desc->pkt_scan(gspca_dev,
- urb->transfer_buffer,
- urb->actual_length);
-
-resubmit:
- /* resubmit the URB */
- if (gspca_dev->cam.bulk_nurbs != 0) {
- st = usb_submit_urb(urb, GFP_ATOMIC);
- if (st < 0)
- pr_err("usb_submit_urb() ret %d\n", st);
- }
-}
-
-/*
- * add data to the current frame
- *
- * This function is called by the subdrivers at interrupt level.
- *
- * To build a frame, these ones must add
- * - one FIRST_PACKET
- * - 0 or many INTER_PACKETs
- * - one LAST_PACKET
- * DISCARD_PACKET invalidates the whole frame.
- */
-void gspca_frame_add(struct gspca_dev *gspca_dev,
- enum gspca_packet_type packet_type,
- const u8 *data,
- int len)
-{
- struct gspca_frame *frame;
- int i, j;
-
- PDEBUG(D_PACK, "add t:%d l:%d", packet_type, len);
-
- if (packet_type == FIRST_PACKET) {
- i = atomic_read(&gspca_dev->fr_i);
-
- /* if there are no queued buffer, discard the whole frame */
- if (i == atomic_read(&gspca_dev->fr_q)) {
- gspca_dev->last_packet_type = DISCARD_PACKET;
- gspca_dev->sequence++;
- return;
- }
- j = gspca_dev->fr_queue[i];
- frame = &gspca_dev->frame[j];
- frame->v4l2_buf.timestamp = ktime_to_timeval(ktime_get());
- frame->v4l2_buf.sequence = gspca_dev->sequence++;
- gspca_dev->image = frame->data;
- gspca_dev->image_len = 0;
- } else {
- switch (gspca_dev->last_packet_type) {
- case DISCARD_PACKET:
- if (packet_type == LAST_PACKET) {
- gspca_dev->last_packet_type = packet_type;
- gspca_dev->image = NULL;
- gspca_dev->image_len = 0;
- }
- return;
- case LAST_PACKET:
- return;
- }
- }
-
- /* append the packet to the frame buffer */
- if (len > 0) {
- if (gspca_dev->image_len + len > gspca_dev->frsz) {
- PDEBUG(D_ERR|D_PACK, "frame overflow %d > %d",
- gspca_dev->image_len + len,
- gspca_dev->frsz);
- packet_type = DISCARD_PACKET;
- } else {
-/* !! image is NULL only when last pkt is LAST or DISCARD
- if (gspca_dev->image == NULL) {
- pr_err("gspca_frame_add() image == NULL\n");
- return;
- }
- */
- memcpy(gspca_dev->image + gspca_dev->image_len,
- data, len);
- gspca_dev->image_len += len;
- }
- }
- gspca_dev->last_packet_type = packet_type;
-
- /* if last packet, invalidate packet concatenation until
- * next first packet, wake up the application and advance
- * in the queue */
- if (packet_type == LAST_PACKET) {
- i = atomic_read(&gspca_dev->fr_i);
- j = gspca_dev->fr_queue[i];
- frame = &gspca_dev->frame[j];
- frame->v4l2_buf.bytesused = gspca_dev->image_len;
- frame->v4l2_buf.flags = (frame->v4l2_buf.flags
- | V4L2_BUF_FLAG_DONE)
- & ~V4L2_BUF_FLAG_QUEUED;
- i = (i + 1) % GSPCA_MAX_FRAMES;
- atomic_set(&gspca_dev->fr_i, i);
- wake_up_interruptible(&gspca_dev->wq); /* event = new frame */
- PDEBUG(D_FRAM, "frame complete len:%d",
- frame->v4l2_buf.bytesused);
- gspca_dev->image = NULL;
- gspca_dev->image_len = 0;
- }
-}
-EXPORT_SYMBOL(gspca_frame_add);
-
-static int frame_alloc(struct gspca_dev *gspca_dev, struct file *file,
- enum v4l2_memory memory, unsigned int count)
-{
- struct gspca_frame *frame;
- unsigned int frsz;
- int i;
-
- i = gspca_dev->curr_mode;
- frsz = gspca_dev->cam.cam_mode[i].sizeimage;
- PDEBUG(D_STREAM, "frame alloc frsz: %d", frsz);
- frsz = PAGE_ALIGN(frsz);
- if (count >= GSPCA_MAX_FRAMES)
- count = GSPCA_MAX_FRAMES - 1;
- gspca_dev->frbuf = vmalloc_32(frsz * count);
- if (!gspca_dev->frbuf) {
- pr_err("frame alloc failed\n");
- return -ENOMEM;
- }
- gspca_dev->capt_file = file;
- gspca_dev->memory = memory;
- gspca_dev->frsz = frsz;
- gspca_dev->nframes = count;
- for (i = 0; i < count; i++) {
- frame = &gspca_dev->frame[i];
- frame->v4l2_buf.index = i;
- frame->v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- frame->v4l2_buf.flags = 0;
- frame->v4l2_buf.field = V4L2_FIELD_NONE;
- frame->v4l2_buf.length = frsz;
- frame->v4l2_buf.memory = memory;
- frame->v4l2_buf.sequence = 0;
- frame->data = gspca_dev->frbuf + i * frsz;
- frame->v4l2_buf.m.offset = i * frsz;
- }
- atomic_set(&gspca_dev->fr_q, 0);
- atomic_set(&gspca_dev->fr_i, 0);
- gspca_dev->fr_o = 0;
- return 0;
-}
-
-static void frame_free(struct gspca_dev *gspca_dev)
-{
- int i;
-
- PDEBUG(D_STREAM, "frame free");
- if (gspca_dev->frbuf != NULL) {
- vfree(gspca_dev->frbuf);
- gspca_dev->frbuf = NULL;
- for (i = 0; i < gspca_dev->nframes; i++)
- gspca_dev->frame[i].data = NULL;
- }
- gspca_dev->nframes = 0;
- gspca_dev->frsz = 0;
- gspca_dev->capt_file = NULL;
- gspca_dev->memory = GSPCA_MEMORY_NO;
-}
-
-static void destroy_urbs(struct gspca_dev *gspca_dev)
-{
- struct urb *urb;
- unsigned int i;
-
- PDEBUG(D_STREAM, "kill transfer");
- for (i = 0; i < MAX_NURBS; i++) {
- urb = gspca_dev->urb[i];
- if (urb == NULL)
- break;
-
- gspca_dev->urb[i] = NULL;
- usb_kill_urb(urb);
- if (urb->transfer_buffer != NULL)
- usb_free_coherent(gspca_dev->dev,
- urb->transfer_buffer_length,
- urb->transfer_buffer,
- urb->transfer_dma);
- usb_free_urb(urb);
- }
-}
-
-static int gspca_set_alt0(struct gspca_dev *gspca_dev)
-{
- int ret;
-
- if (gspca_dev->alt == 0)
- return 0;
- ret = usb_set_interface(gspca_dev->dev, gspca_dev->iface, 0);
- if (ret < 0)
- pr_err("set alt 0 err %d\n", ret);
- return ret;
-}
-
-/* Note: both the queue and the usb locks should be held when calling this */
-static void gspca_stream_off(struct gspca_dev *gspca_dev)
-{
- gspca_dev->streaming = 0;
- gspca_dev->usb_err = 0;
- if (gspca_dev->sd_desc->stopN)
- gspca_dev->sd_desc->stopN(gspca_dev);
- destroy_urbs(gspca_dev);
- gspca_input_destroy_urb(gspca_dev);
- gspca_set_alt0(gspca_dev);
- gspca_input_create_urb(gspca_dev);
- if (gspca_dev->sd_desc->stop0)
- gspca_dev->sd_desc->stop0(gspca_dev);
- PDEBUG(D_STREAM, "stream off OK");
-}
-
-/*
- * look for an input transfer endpoint in an alternate setting
- */
-static struct usb_host_endpoint *alt_xfer(struct usb_host_interface *alt,
- int xfer)
-{
- struct usb_host_endpoint *ep;
- int i, attr;
-
- for (i = 0; i < alt->desc.bNumEndpoints; i++) {
- ep = &alt->endpoint[i];
- attr = ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
- if (attr == xfer
- && ep->desc.wMaxPacketSize != 0
- && usb_endpoint_dir_in(&ep->desc))
- return ep;
- }
- return NULL;
-}
-
-/* compute the minimum bandwidth for the current transfer */
-static u32 which_bandwidth(struct gspca_dev *gspca_dev)
-{
- u32 bandwidth;
- int i;
-
- /* get the (max) image size */
- i = gspca_dev->curr_mode;
- bandwidth = gspca_dev->cam.cam_mode[i].sizeimage;
-
- /* if the image is compressed, estimate its mean size */
- if (!gspca_dev->cam.needs_full_bandwidth &&
- bandwidth < gspca_dev->cam.cam_mode[i].width *
- gspca_dev->cam.cam_mode[i].height)
- bandwidth = bandwidth * 3 / 8; /* 0.375 */
-
- /* estimate the frame rate */
- if (gspca_dev->sd_desc->get_streamparm) {
- struct v4l2_streamparm parm;
-
- gspca_dev->sd_desc->get_streamparm(gspca_dev, &parm);
- bandwidth *= parm.parm.capture.timeperframe.denominator;
- bandwidth /= parm.parm.capture.timeperframe.numerator;
- } else {
-
- /* don't hope more than 15 fps with USB 1.1 and
- * image resolution >= 640x480 */
- if (gspca_dev->width >= 640
- && gspca_dev->dev->speed == USB_SPEED_FULL)
- bandwidth *= 15; /* 15 fps */
- else
- bandwidth *= 30; /* 30 fps */
- }
-
- PDEBUG(D_STREAM, "min bandwidth: %d", bandwidth);
- return bandwidth;
-}
-
-/* endpoint table */
-#define MAX_ALT 16
-struct ep_tb_s {
- u32 alt;
- u32 bandwidth;
-};
-
-/*
- * build the table of the endpoints
- * and compute the minimum bandwidth for the image transfer
- */
-static int build_isoc_ep_tb(struct gspca_dev *gspca_dev,
- struct usb_interface *intf,
- struct ep_tb_s *ep_tb)
-{
- struct usb_host_endpoint *ep;
- int i, j, nbalt, psize, found;
- u32 bandwidth, last_bw;
-
- nbalt = intf->num_altsetting;
- if (nbalt > MAX_ALT)
- nbalt = MAX_ALT; /* fixme: should warn */
-
- /* build the endpoint table */
- i = 0;
- last_bw = 0;
- for (;;) {
- ep_tb->bandwidth = 2000 * 2000 * 120;
- found = 0;
- for (j = 0; j < nbalt; j++) {
- ep = alt_xfer(&intf->altsetting[j],
- USB_ENDPOINT_XFER_ISOC);
- if (ep == NULL)
- continue;
- if (ep->desc.bInterval == 0) {
- pr_err("alt %d iso endp with 0 interval\n", j);
- continue;
- }
- psize = le16_to_cpu(ep->desc.wMaxPacketSize);
- psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
- bandwidth = psize * 1000;
- if (gspca_dev->dev->speed == USB_SPEED_HIGH
- || gspca_dev->dev->speed == USB_SPEED_SUPER)
- bandwidth *= 8;
- bandwidth /= 1 << (ep->desc.bInterval - 1);
- if (bandwidth <= last_bw)
- continue;
- if (bandwidth < ep_tb->bandwidth) {
- ep_tb->bandwidth = bandwidth;
- ep_tb->alt = j;
- found = 1;
- }
- }
- if (!found)
- break;
- PDEBUG(D_STREAM, "alt %d bandwidth %d",
- ep_tb->alt, ep_tb->bandwidth);
- last_bw = ep_tb->bandwidth;
- i++;
- ep_tb++;
- }
-
- /*
- * If the camera:
- * has a usb audio class interface (a built in usb mic); and
- * is a usb 1 full speed device; and
- * uses the max full speed iso bandwidth; and
- * and has more than 1 alt setting
- * then skip the highest alt setting to spare bandwidth for the mic
- */
- if (gspca_dev->audio &&
- gspca_dev->dev->speed == USB_SPEED_FULL &&
- last_bw >= 1000000 &&
- i > 1) {
- PDEBUG(D_STREAM, "dev has usb audio, skipping highest alt");
- i--;
- ep_tb--;
- }
-
- /* get the requested bandwidth and start at the highest atlsetting */
- bandwidth = which_bandwidth(gspca_dev);
- ep_tb--;
- while (i > 1) {
- ep_tb--;
- if (ep_tb->bandwidth < bandwidth)
- break;
- i--;
- }
- return i;
-}
-
-/*
- * create the URBs for image transfer
- */
-static int create_urbs(struct gspca_dev *gspca_dev,
- struct usb_host_endpoint *ep)
-{
- struct urb *urb;
- int n, nurbs, i, psize, npkt, bsize;
-
- /* calculate the packet size and the number of packets */
- psize = le16_to_cpu(ep->desc.wMaxPacketSize);
-
- if (!gspca_dev->cam.bulk) { /* isoc */
-
- /* See paragraph 5.9 / table 5-11 of the usb 2.0 spec. */
- if (gspca_dev->pkt_size == 0)
- psize = (psize & 0x07ff) * (1 + ((psize >> 11) & 3));
- else
- psize = gspca_dev->pkt_size;
- npkt = gspca_dev->cam.npkt;
- if (npkt == 0)
- npkt = 32; /* default value */
- bsize = psize * npkt;
- PDEBUG(D_STREAM,
- "isoc %d pkts size %d = bsize:%d",
- npkt, psize, bsize);
- nurbs = DEF_NURBS;
- } else { /* bulk */
- npkt = 0;
- bsize = gspca_dev->cam.bulk_size;
- if (bsize == 0)
- bsize = psize;
- PDEBUG(D_STREAM, "bulk bsize:%d", bsize);
- if (gspca_dev->cam.bulk_nurbs != 0)
- nurbs = gspca_dev->cam.bulk_nurbs;
- else
- nurbs = 1;
- }
-
- for (n = 0; n < nurbs; n++) {
- urb = usb_alloc_urb(npkt, GFP_KERNEL);
- if (!urb) {
- pr_err("usb_alloc_urb failed\n");
- return -ENOMEM;
- }
- gspca_dev->urb[n] = urb;
- urb->transfer_buffer = usb_alloc_coherent(gspca_dev->dev,
- bsize,
- GFP_KERNEL,
- &urb->transfer_dma);
-
- if (urb->transfer_buffer == NULL) {
- pr_err("usb_alloc_coherent failed\n");
- return -ENOMEM;
- }
- urb->dev = gspca_dev->dev;
- urb->context = gspca_dev;
- urb->transfer_buffer_length = bsize;
- if (npkt != 0) { /* ISOC */
- urb->pipe = usb_rcvisocpipe(gspca_dev->dev,
- ep->desc.bEndpointAddress);
- urb->transfer_flags = URB_ISO_ASAP
- | URB_NO_TRANSFER_DMA_MAP;
- urb->interval = 1 << (ep->desc.bInterval - 1);
- urb->complete = isoc_irq;
- urb->number_of_packets = npkt;
- for (i = 0; i < npkt; i++) {
- urb->iso_frame_desc[i].length = psize;
- urb->iso_frame_desc[i].offset = psize * i;
- }
- } else { /* bulk */
- urb->pipe = usb_rcvbulkpipe(gspca_dev->dev,
- ep->desc.bEndpointAddress);
- urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
- urb->complete = bulk_irq;
- }
- }
- return 0;
-}
-
-/*
- * start the USB transfer
- */
-static int gspca_init_transfer(struct gspca_dev *gspca_dev)
-{
- struct usb_interface *intf;
- struct usb_host_endpoint *ep;
- struct urb *urb;
- struct ep_tb_s ep_tb[MAX_ALT];
- int n, ret, xfer, alt, alt_idx;
-
- /* reset the streaming variables */
- gspca_dev->image = NULL;
- gspca_dev->image_len = 0;
- gspca_dev->last_packet_type = DISCARD_PACKET;
- gspca_dev->sequence = 0;
-
- gspca_dev->usb_err = 0;
-
- /* do the specific subdriver stuff before endpoint selection */
- intf = usb_ifnum_to_if(gspca_dev->dev, gspca_dev->iface);
- gspca_dev->alt = gspca_dev->cam.bulk ? intf->num_altsetting : 0;
- if (gspca_dev->sd_desc->isoc_init) {
- ret = gspca_dev->sd_desc->isoc_init(gspca_dev);
- if (ret < 0)
- return ret;
- }
- xfer = gspca_dev->cam.bulk ? USB_ENDPOINT_XFER_BULK
- : USB_ENDPOINT_XFER_ISOC;
-
- /* if bulk or the subdriver forced an altsetting, get the endpoint */
- if (gspca_dev->alt != 0) {
- gspca_dev->alt--; /* (previous version compatibility) */
- ep = alt_xfer(&intf->altsetting[gspca_dev->alt], xfer);
- if (ep == NULL) {
- pr_err("bad altsetting %d\n", gspca_dev->alt);
- return -EIO;
- }
- ep_tb[0].alt = gspca_dev->alt;
- alt_idx = 1;
- } else {
-
- /* else, compute the minimum bandwidth
- * and build the endpoint table */
- alt_idx = build_isoc_ep_tb(gspca_dev, intf, ep_tb);
- if (alt_idx <= 0) {
- pr_err("no transfer endpoint found\n");
- return -EIO;
- }
- }
-
- /* set the highest alternate setting and
- * loop until urb submit succeeds */
- gspca_input_destroy_urb(gspca_dev);
-
- gspca_dev->alt = ep_tb[--alt_idx].alt;
- alt = -1;
- for (;;) {
- if (alt != gspca_dev->alt) {
- alt = gspca_dev->alt;
- if (intf->num_altsetting > 1) {
- ret = usb_set_interface(gspca_dev->dev,
- gspca_dev->iface,
- alt);
- if (ret < 0) {
- if (ret == -ENOSPC)
- goto retry; /*fixme: ugly*/
- pr_err("set alt %d err %d\n", alt, ret);
- goto out;
- }
- }
- }
- if (!gspca_dev->cam.no_urb_create) {
- PDEBUG(D_STREAM, "init transfer alt %d", alt);
- ret = create_urbs(gspca_dev,
- alt_xfer(&intf->altsetting[alt], xfer));
- if (ret < 0) {
- destroy_urbs(gspca_dev);
- goto out;
- }
- }
-
- /* clear the bulk endpoint */
- if (gspca_dev->cam.bulk)
- usb_clear_halt(gspca_dev->dev,
- gspca_dev->urb[0]->pipe);
-
- /* start the cam */
- ret = gspca_dev->sd_desc->start(gspca_dev);
- if (ret < 0) {
- destroy_urbs(gspca_dev);
- goto out;
- }
- gspca_dev->streaming = 1;
- v4l2_ctrl_handler_setup(gspca_dev->vdev.ctrl_handler);
-
- /* some bulk transfers are started by the subdriver */
- if (gspca_dev->cam.bulk && gspca_dev->cam.bulk_nurbs == 0)
- break;
-
- /* submit the URBs */
- for (n = 0; n < MAX_NURBS; n++) {
- urb = gspca_dev->urb[n];
- if (urb == NULL)
- break;
- ret = usb_submit_urb(urb, GFP_KERNEL);
- if (ret < 0)
- break;
- }
- if (ret >= 0)
- break; /* transfer is started */
-
- /* something when wrong
- * stop the webcam and free the transfer resources */
- gspca_stream_off(gspca_dev);
- if (ret != -ENOSPC) {
- pr_err("usb_submit_urb alt %d err %d\n",
- gspca_dev->alt, ret);
- goto out;
- }
-
- /* the bandwidth is not wide enough
- * negotiate or try a lower alternate setting */
-retry:
- PDEBUG(D_ERR|D_STREAM,
- "alt %d - bandwidth not wide enough - trying again",
- alt);
- msleep(20); /* wait for kill complete */
- if (gspca_dev->sd_desc->isoc_nego) {
- ret = gspca_dev->sd_desc->isoc_nego(gspca_dev);
- if (ret < 0)
- goto out;
- } else {
- if (alt_idx <= 0) {
- pr_err("no transfer endpoint found\n");
- ret = -EIO;
- goto out;
- }
- gspca_dev->alt = ep_tb[--alt_idx].alt;
- }
- }
-out:
- gspca_input_create_urb(gspca_dev);
- return ret;
-}
-
-static void gspca_set_default_mode(struct gspca_dev *gspca_dev)
-{
- struct gspca_ctrl *ctrl;
- int i;
-
- i = gspca_dev->cam.nmodes - 1; /* take the highest mode */
- gspca_dev->curr_mode = i;
- gspca_dev->width = gspca_dev->cam.cam_mode[i].width;
- gspca_dev->height = gspca_dev->cam.cam_mode[i].height;
- gspca_dev->pixfmt = gspca_dev->cam.cam_mode[i].pixelformat;
-
- /* set the current control values to their default values
- * which may have changed in sd_init() */
- /* does nothing if ctrl_handler == NULL */
- v4l2_ctrl_handler_setup(gspca_dev->vdev.ctrl_handler);
- ctrl = gspca_dev->cam.ctrls;
- if (ctrl != NULL) {
- for (i = 0;
- i < gspca_dev->sd_desc->nctrls;
- i++, ctrl++)
- ctrl->val = ctrl->def;
- }
-}
-
-static int wxh_to_mode(struct gspca_dev *gspca_dev,
- int width, int height)
-{
- int i;
-
- for (i = gspca_dev->cam.nmodes; --i > 0; ) {
- if (width >= gspca_dev->cam.cam_mode[i].width
- && height >= gspca_dev->cam.cam_mode[i].height)
- break;
- }
- return i;
-}
-
-/*
- * search a mode with the right pixel format
- */
-static int gspca_get_mode(struct gspca_dev *gspca_dev,
- int mode,
- int pixfmt)
-{
- int modeU, modeD;
-
- modeU = modeD = mode;
- while ((modeU < gspca_dev->cam.nmodes) || modeD >= 0) {
- if (--modeD >= 0) {
- if (gspca_dev->cam.cam_mode[modeD].pixelformat
- == pixfmt)
- return modeD;
- }
- if (++modeU < gspca_dev->cam.nmodes) {
- if (gspca_dev->cam.cam_mode[modeU].pixelformat
- == pixfmt)
- return modeU;
- }
- }
- return -EINVAL;
-}
-
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-static int vidioc_g_register(struct file *file, void *priv,
- struct v4l2_dbg_register *reg)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
-
- gspca_dev->usb_err = 0;
- return gspca_dev->sd_desc->get_register(gspca_dev, reg);
-}
-
-static int vidioc_s_register(struct file *file, void *priv,
- struct v4l2_dbg_register *reg)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
-
- gspca_dev->usb_err = 0;
- return gspca_dev->sd_desc->set_register(gspca_dev, reg);
-}
-#endif
-
-static int vidioc_g_chip_ident(struct file *file, void *priv,
- struct v4l2_dbg_chip_ident *chip)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
-
- gspca_dev->usb_err = 0;
- return gspca_dev->sd_desc->get_chip_ident(gspca_dev, chip);
-}
-
-static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_fmtdesc *fmtdesc)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- int i, j, index;
- __u32 fmt_tb[8];
-
- /* give an index to each format */
- index = 0;
- j = 0;
- for (i = gspca_dev->cam.nmodes; --i >= 0; ) {
- fmt_tb[index] = gspca_dev->cam.cam_mode[i].pixelformat;
- j = 0;
- for (;;) {
- if (fmt_tb[j] == fmt_tb[index])
- break;
- j++;
- }
- if (j == index) {
- if (fmtdesc->index == index)
- break; /* new format */
- index++;
- if (index >= ARRAY_SIZE(fmt_tb))
- return -EINVAL;
- }
- }
- if (i < 0)
- return -EINVAL; /* no more format */
-
- fmtdesc->pixelformat = fmt_tb[index];
- if (gspca_dev->cam.cam_mode[i].sizeimage <
- gspca_dev->cam.cam_mode[i].width *
- gspca_dev->cam.cam_mode[i].height)
- fmtdesc->flags = V4L2_FMT_FLAG_COMPRESSED;
- fmtdesc->description[0] = fmtdesc->pixelformat & 0xff;
- fmtdesc->description[1] = (fmtdesc->pixelformat >> 8) & 0xff;
- fmtdesc->description[2] = (fmtdesc->pixelformat >> 16) & 0xff;
- fmtdesc->description[3] = fmtdesc->pixelformat >> 24;
- fmtdesc->description[4] = '\0';
- return 0;
-}
-
-static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *fmt)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- int mode;
-
- mode = gspca_dev->curr_mode;
- fmt->fmt.pix = gspca_dev->cam.cam_mode[mode];
- /* some drivers use priv internally, zero it before giving it to
- userspace */
- fmt->fmt.pix.priv = 0;
- return 0;
-}
-
-static int try_fmt_vid_cap(struct gspca_dev *gspca_dev,
- struct v4l2_format *fmt)
-{
- int w, h, mode, mode2;
-
- w = fmt->fmt.pix.width;
- h = fmt->fmt.pix.height;
-
-#ifdef GSPCA_DEBUG
- if (gspca_debug & D_CONF)
- PDEBUG_MODE("try fmt cap", fmt->fmt.pix.pixelformat, w, h);
-#endif
- /* search the closest mode for width and height */
- mode = wxh_to_mode(gspca_dev, w, h);
-
- /* OK if right palette */
- if (gspca_dev->cam.cam_mode[mode].pixelformat
- != fmt->fmt.pix.pixelformat) {
-
- /* else, search the closest mode with the same pixel format */
- mode2 = gspca_get_mode(gspca_dev, mode,
- fmt->fmt.pix.pixelformat);
- if (mode2 >= 0)
- mode = mode2;
-/* else
- ; * no chance, return this mode */
- }
- fmt->fmt.pix = gspca_dev->cam.cam_mode[mode];
- /* some drivers use priv internally, zero it before giving it to
- userspace */
- fmt->fmt.pix.priv = 0;
- return mode; /* used when s_fmt */
-}
-
-static int vidioc_try_fmt_vid_cap(struct file *file,
- void *priv,
- struct v4l2_format *fmt)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- int ret;
-
- ret = try_fmt_vid_cap(gspca_dev, fmt);
- if (ret < 0)
- return ret;
- return 0;
-}
-
-static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *fmt)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- int ret;
-
- if (mutex_lock_interruptible(&gspca_dev->queue_lock))
- return -ERESTARTSYS;
-
- ret = try_fmt_vid_cap(gspca_dev, fmt);
- if (ret < 0)
- goto out;
-
- if (gspca_dev->nframes != 0
- && fmt->fmt.pix.sizeimage > gspca_dev->frsz) {
- ret = -EINVAL;
- goto out;
- }
-
- if (ret == gspca_dev->curr_mode) {
- ret = 0;
- goto out; /* same mode */
- }
-
- if (gspca_dev->streaming) {
- ret = -EBUSY;
- goto out;
- }
- gspca_dev->width = fmt->fmt.pix.width;
- gspca_dev->height = fmt->fmt.pix.height;
- gspca_dev->pixfmt = fmt->fmt.pix.pixelformat;
- gspca_dev->curr_mode = ret;
-
- ret = 0;
-out:
- mutex_unlock(&gspca_dev->queue_lock);
- return ret;
-}
-
-static int vidioc_enum_framesizes(struct file *file, void *priv,
- struct v4l2_frmsizeenum *fsize)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- int i;
- __u32 index = 0;
-
- for (i = 0; i < gspca_dev->cam.nmodes; i++) {
- if (fsize->pixel_format !=
- gspca_dev->cam.cam_mode[i].pixelformat)
- continue;
-
- if (fsize->index == index) {
- fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
- fsize->discrete.width =
- gspca_dev->cam.cam_mode[i].width;
- fsize->discrete.height =
- gspca_dev->cam.cam_mode[i].height;
- return 0;
- }
- index++;
- }
-
- return -EINVAL;
-}
-
-static int vidioc_enum_frameintervals(struct file *filp, void *priv,
- struct v4l2_frmivalenum *fival)
-{
- struct gspca_dev *gspca_dev = video_drvdata(filp);
- int mode = wxh_to_mode(gspca_dev, fival->width, fival->height);
- __u32 i;
-
- if (gspca_dev->cam.mode_framerates == NULL ||
- gspca_dev->cam.mode_framerates[mode].nrates == 0)
- return -EINVAL;
-
- if (fival->pixel_format !=
- gspca_dev->cam.cam_mode[mode].pixelformat)
- return -EINVAL;
-
- for (i = 0; i < gspca_dev->cam.mode_framerates[mode].nrates; i++) {
- if (fival->index == i) {
- fival->type = V4L2_FRMSIZE_TYPE_DISCRETE;
- fival->discrete.numerator = 1;
- fival->discrete.denominator =
- gspca_dev->cam.mode_framerates[mode].rates[i];
- return 0;
- }
- }
-
- return -EINVAL;
-}
-
-static void gspca_release(struct v4l2_device *v4l2_device)
-{
- struct gspca_dev *gspca_dev =
- container_of(v4l2_device, struct gspca_dev, v4l2_dev);
-
- v4l2_ctrl_handler_free(gspca_dev->vdev.ctrl_handler);
- v4l2_device_unregister(&gspca_dev->v4l2_dev);
- kfree(gspca_dev->usb_buf);
- kfree(gspca_dev);
-}
-
-static int dev_open(struct file *file)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
-
- PDEBUG(D_STREAM, "[%s] open", current->comm);
-
- /* protect the subdriver against rmmod */
- if (!try_module_get(gspca_dev->module))
- return -ENODEV;
-
-#ifdef GSPCA_DEBUG
- /* activate the v4l2 debug */
- if (gspca_debug & D_V4L2)
- gspca_dev->vdev.debug |= V4L2_DEBUG_IOCTL
- | V4L2_DEBUG_IOCTL_ARG;
- else
- gspca_dev->vdev.debug &= ~(V4L2_DEBUG_IOCTL
- | V4L2_DEBUG_IOCTL_ARG);
-#endif
- return v4l2_fh_open(file);
-}
-
-static int dev_close(struct file *file)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
-
- PDEBUG(D_STREAM, "[%s] close", current->comm);
-
- /* Needed for gspca_stream_off, always lock before queue_lock! */
- if (mutex_lock_interruptible(&gspca_dev->usb_lock))
- return -ERESTARTSYS;
-
- if (mutex_lock_interruptible(&gspca_dev->queue_lock)) {
- mutex_unlock(&gspca_dev->usb_lock);
- return -ERESTARTSYS;
- }
-
- /* if the file did the capture, free the streaming resources */
- if (gspca_dev->capt_file == file) {
- if (gspca_dev->streaming)
- gspca_stream_off(gspca_dev);
- frame_free(gspca_dev);
- }
- module_put(gspca_dev->module);
- mutex_unlock(&gspca_dev->queue_lock);
- mutex_unlock(&gspca_dev->usb_lock);
-
- PDEBUG(D_STREAM, "close done");
-
- return v4l2_fh_release(file);
-}
-
-static int vidioc_querycap(struct file *file, void *priv,
- struct v4l2_capability *cap)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
-
- strlcpy((char *) cap->driver, gspca_dev->sd_desc->name,
- sizeof cap->driver);
- if (gspca_dev->dev->product != NULL) {
- strlcpy((char *) cap->card, gspca_dev->dev->product,
- sizeof cap->card);
- } else {
- snprintf((char *) cap->card, sizeof cap->card,
- "USB Camera (%04x:%04x)",
- le16_to_cpu(gspca_dev->dev->descriptor.idVendor),
- le16_to_cpu(gspca_dev->dev->descriptor.idProduct));
- }
- usb_make_path(gspca_dev->dev, (char *) cap->bus_info,
- sizeof(cap->bus_info));
- cap->device_caps = V4L2_CAP_VIDEO_CAPTURE
- | V4L2_CAP_STREAMING
- | V4L2_CAP_READWRITE;
- cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
- return 0;
-}
-
-static int get_ctrl(struct gspca_dev *gspca_dev,
- int id)
-{
- const struct ctrl *ctrls;
- int i;
-
- for (i = 0, ctrls = gspca_dev->sd_desc->ctrls;
- i < gspca_dev->sd_desc->nctrls;
- i++, ctrls++) {
- if (gspca_dev->ctrl_dis & (1 << i))
- continue;
- if (id == ctrls->qctrl.id)
- return i;
- }
- return -1;
-}
-
-static int vidioc_queryctrl(struct file *file, void *priv,
- struct v4l2_queryctrl *q_ctrl)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- const struct ctrl *ctrls;
- struct gspca_ctrl *gspca_ctrl;
- int i, idx;
- u32 id;
-
- id = q_ctrl->id;
- if (id & V4L2_CTRL_FLAG_NEXT_CTRL) {
- id &= V4L2_CTRL_ID_MASK;
- id++;
- idx = -1;
- for (i = 0; i < gspca_dev->sd_desc->nctrls; i++) {
- if (gspca_dev->ctrl_dis & (1 << i))
- continue;
- if (gspca_dev->sd_desc->ctrls[i].qctrl.id < id)
- continue;
- if (idx >= 0
- && gspca_dev->sd_desc->ctrls[i].qctrl.id
- > gspca_dev->sd_desc->ctrls[idx].qctrl.id)
- continue;
- idx = i;
- }
- } else {
- idx = get_ctrl(gspca_dev, id);
- }
- if (idx < 0)
- return -EINVAL;
- ctrls = &gspca_dev->sd_desc->ctrls[idx];
- memcpy(q_ctrl, &ctrls->qctrl, sizeof *q_ctrl);
- if (gspca_dev->cam.ctrls != NULL) {
- gspca_ctrl = &gspca_dev->cam.ctrls[idx];
- q_ctrl->default_value = gspca_ctrl->def;
- q_ctrl->minimum = gspca_ctrl->min;
- q_ctrl->maximum = gspca_ctrl->max;
- }
- if (gspca_dev->ctrl_inac & (1 << idx))
- q_ctrl->flags |= V4L2_CTRL_FLAG_INACTIVE;
- return 0;
-}
-
-static int vidioc_s_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- const struct ctrl *ctrls;
- struct gspca_ctrl *gspca_ctrl;
- int idx;
-
- idx = get_ctrl(gspca_dev, ctrl->id);
- if (idx < 0)
- return -EINVAL;
- if (gspca_dev->ctrl_inac & (1 << idx))
- return -EINVAL;
- ctrls = &gspca_dev->sd_desc->ctrls[idx];
- if (gspca_dev->cam.ctrls != NULL) {
- gspca_ctrl = &gspca_dev->cam.ctrls[idx];
- if (ctrl->value < gspca_ctrl->min
- || ctrl->value > gspca_ctrl->max)
- return -ERANGE;
- } else {
- gspca_ctrl = NULL;
- if (ctrl->value < ctrls->qctrl.minimum
- || ctrl->value > ctrls->qctrl.maximum)
- return -ERANGE;
- }
- PDEBUG(D_CONF, "set ctrl [%08x] = %d", ctrl->id, ctrl->value);
- gspca_dev->usb_err = 0;
- if (ctrls->set != NULL)
- return ctrls->set(gspca_dev, ctrl->value);
- if (gspca_ctrl != NULL) {
- gspca_ctrl->val = ctrl->value;
- if (ctrls->set_control != NULL
- && gspca_dev->streaming)
- ctrls->set_control(gspca_dev);
- }
- return gspca_dev->usb_err;
-}
-
-static int vidioc_g_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- const struct ctrl *ctrls;
- int idx;
-
- idx = get_ctrl(gspca_dev, ctrl->id);
- if (idx < 0)
- return -EINVAL;
- ctrls = &gspca_dev->sd_desc->ctrls[idx];
-
- gspca_dev->usb_err = 0;
- if (ctrls->get != NULL)
- return ctrls->get(gspca_dev, &ctrl->value);
- if (gspca_dev->cam.ctrls != NULL)
- ctrl->value = gspca_dev->cam.ctrls[idx].val;
- return 0;
-}
-
-static int vidioc_querymenu(struct file *file, void *priv,
- struct v4l2_querymenu *qmenu)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
-
- if (!gspca_dev->sd_desc->querymenu)
- return -ENOTTY;
- return gspca_dev->sd_desc->querymenu(gspca_dev, qmenu);
-}
-
-static int vidioc_enum_input(struct file *file, void *priv,
- struct v4l2_input *input)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
-
- if (input->index != 0)
- return -EINVAL;
- input->type = V4L2_INPUT_TYPE_CAMERA;
- input->status = gspca_dev->cam.input_flags;
- strlcpy(input->name, gspca_dev->sd_desc->name,
- sizeof input->name);
- return 0;
-}
-
-static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
-{
- *i = 0;
- return 0;
-}
-
-static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
-{
- if (i > 0)
- return -EINVAL;
- return (0);
-}
-
-static int vidioc_reqbufs(struct file *file, void *priv,
- struct v4l2_requestbuffers *rb)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- int i, ret = 0, streaming;
-
- i = rb->memory; /* (avoid compilation warning) */
- switch (i) {
- case GSPCA_MEMORY_READ: /* (internal call) */
- case V4L2_MEMORY_MMAP:
- case V4L2_MEMORY_USERPTR:
- break;
- default:
- return -EINVAL;
- }
- if (mutex_lock_interruptible(&gspca_dev->queue_lock))
- return -ERESTARTSYS;
-
- if (gspca_dev->memory != GSPCA_MEMORY_NO
- && gspca_dev->memory != GSPCA_MEMORY_READ
- && gspca_dev->memory != rb->memory) {
- ret = -EBUSY;
- goto out;
- }
-
- /* only one file may do the capture */
- if (gspca_dev->capt_file != NULL
- && gspca_dev->capt_file != file) {
- ret = -EBUSY;
- goto out;
- }
-
- /* if allocated, the buffers must not be mapped */
- for (i = 0; i < gspca_dev->nframes; i++) {
- if (gspca_dev->frame[i].vma_use_count) {
- ret = -EBUSY;
- goto out;
- }
- }
-
- /* stop streaming */
- streaming = gspca_dev->streaming;
- if (streaming) {
- gspca_stream_off(gspca_dev);
-
- /* Don't restart the stream when switching from read
- * to mmap mode */
- if (gspca_dev->memory == GSPCA_MEMORY_READ)
- streaming = 0;
- }
-
- /* free the previous allocated buffers, if any */
- if (gspca_dev->nframes != 0)
- frame_free(gspca_dev);
- if (rb->count == 0) /* unrequest */
- goto out;
- ret = frame_alloc(gspca_dev, file, rb->memory, rb->count);
- if (ret == 0) {
- rb->count = gspca_dev->nframes;
- if (streaming)
- ret = gspca_init_transfer(gspca_dev);
- }
-out:
- mutex_unlock(&gspca_dev->queue_lock);
- PDEBUG(D_STREAM, "reqbufs st:%d c:%d", ret, rb->count);
- return ret;
-}
-
-static int vidioc_querybuf(struct file *file, void *priv,
- struct v4l2_buffer *v4l2_buf)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- struct gspca_frame *frame;
-
- if (v4l2_buf->index < 0
- || v4l2_buf->index >= gspca_dev->nframes)
- return -EINVAL;
-
- frame = &gspca_dev->frame[v4l2_buf->index];
- memcpy(v4l2_buf, &frame->v4l2_buf, sizeof *v4l2_buf);
- return 0;
-}
-
-static int vidioc_streamon(struct file *file, void *priv,
- enum v4l2_buf_type buf_type)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- int ret;
-
- if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
- if (mutex_lock_interruptible(&gspca_dev->queue_lock))
- return -ERESTARTSYS;
-
- /* check the capture file */
- if (gspca_dev->capt_file != file) {
- ret = -EBUSY;
- goto out;
- }
-
- if (gspca_dev->nframes == 0
- || !(gspca_dev->frame[0].v4l2_buf.flags & V4L2_BUF_FLAG_QUEUED)) {
- ret = -EINVAL;
- goto out;
- }
- if (!gspca_dev->streaming) {
- ret = gspca_init_transfer(gspca_dev);
- if (ret < 0)
- goto out;
- }
-#ifdef GSPCA_DEBUG
- if (gspca_debug & D_STREAM) {
- PDEBUG_MODE("stream on OK",
- gspca_dev->pixfmt,
- gspca_dev->width,
- gspca_dev->height);
- }
-#endif
- ret = 0;
-out:
- mutex_unlock(&gspca_dev->queue_lock);
- return ret;
-}
-
-static int vidioc_streamoff(struct file *file, void *priv,
- enum v4l2_buf_type buf_type)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- int i, ret;
-
- if (buf_type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
-
- if (mutex_lock_interruptible(&gspca_dev->queue_lock))
- return -ERESTARTSYS;
-
- if (!gspca_dev->streaming) {
- ret = 0;
- goto out;
- }
-
- /* check the capture file */
- if (gspca_dev->capt_file != file) {
- ret = -EBUSY;
- goto out;
- }
-
- /* stop streaming */
- gspca_stream_off(gspca_dev);
- /* In case another thread is waiting in dqbuf */
- wake_up_interruptible(&gspca_dev->wq);
-
- /* empty the transfer queues */
- for (i = 0; i < gspca_dev->nframes; i++)
- gspca_dev->frame[i].v4l2_buf.flags &= ~BUF_ALL_FLAGS;
- atomic_set(&gspca_dev->fr_q, 0);
- atomic_set(&gspca_dev->fr_i, 0);
- gspca_dev->fr_o = 0;
- ret = 0;
-out:
- mutex_unlock(&gspca_dev->queue_lock);
- return ret;
-}
-
-static int vidioc_g_jpegcomp(struct file *file, void *priv,
- struct v4l2_jpegcompression *jpegcomp)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
-
- gspca_dev->usb_err = 0;
- return gspca_dev->sd_desc->get_jcomp(gspca_dev, jpegcomp);
-}
-
-static int vidioc_s_jpegcomp(struct file *file, void *priv,
- struct v4l2_jpegcompression *jpegcomp)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
-
- gspca_dev->usb_err = 0;
- return gspca_dev->sd_desc->set_jcomp(gspca_dev, jpegcomp);
-}
-
-static int vidioc_g_parm(struct file *filp, void *priv,
- struct v4l2_streamparm *parm)
-{
- struct gspca_dev *gspca_dev = video_drvdata(filp);
-
- parm->parm.capture.readbuffers = gspca_dev->nbufread;
-
- if (gspca_dev->sd_desc->get_streamparm) {
- gspca_dev->usb_err = 0;
- gspca_dev->sd_desc->get_streamparm(gspca_dev, parm);
- return gspca_dev->usb_err;
- }
- return 0;
-}
-
-static int vidioc_s_parm(struct file *filp, void *priv,
- struct v4l2_streamparm *parm)
-{
- struct gspca_dev *gspca_dev = video_drvdata(filp);
- int n;
-
- n = parm->parm.capture.readbuffers;
- if (n == 0 || n >= GSPCA_MAX_FRAMES)
- parm->parm.capture.readbuffers = gspca_dev->nbufread;
- else
- gspca_dev->nbufread = n;
-
- if (gspca_dev->sd_desc->set_streamparm) {
- gspca_dev->usb_err = 0;
- gspca_dev->sd_desc->set_streamparm(gspca_dev, parm);
- return gspca_dev->usb_err;
- }
-
- return 0;
-}
-
-static int dev_mmap(struct file *file, struct vm_area_struct *vma)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- struct gspca_frame *frame;
- struct page *page;
- unsigned long addr, start, size;
- int i, ret;
-
- start = vma->vm_start;
- size = vma->vm_end - vma->vm_start;
- PDEBUG(D_STREAM, "mmap start:%08x size:%d", (int) start, (int) size);
-
- if (mutex_lock_interruptible(&gspca_dev->queue_lock))
- return -ERESTARTSYS;
- if (gspca_dev->capt_file != file) {
- ret = -EINVAL;
- goto out;
- }
-
- frame = NULL;
- for (i = 0; i < gspca_dev->nframes; ++i) {
- if (gspca_dev->frame[i].v4l2_buf.memory != V4L2_MEMORY_MMAP) {
- PDEBUG(D_STREAM, "mmap bad memory type");
- break;
- }
- if ((gspca_dev->frame[i].v4l2_buf.m.offset >> PAGE_SHIFT)
- == vma->vm_pgoff) {
- frame = &gspca_dev->frame[i];
- break;
- }
- }
- if (frame == NULL) {
- PDEBUG(D_STREAM, "mmap no frame buffer found");
- ret = -EINVAL;
- goto out;
- }
- if (size != frame->v4l2_buf.length) {
- PDEBUG(D_STREAM, "mmap bad size");
- ret = -EINVAL;
- goto out;
- }
-
- /*
- * - VM_IO marks the area as being a mmaped region for I/O to a
- * device. It also prevents the region from being core dumped.
- */
- vma->vm_flags |= VM_IO;
-
- addr = (unsigned long) frame->data;
- while (size > 0) {
- page = vmalloc_to_page((void *) addr);
- ret = vm_insert_page(vma, start, page);
- if (ret < 0)
- goto out;
- start += PAGE_SIZE;
- addr += PAGE_SIZE;
- size -= PAGE_SIZE;
- }
-
- vma->vm_ops = &gspca_vm_ops;
- vma->vm_private_data = frame;
- gspca_vm_open(vma);
- ret = 0;
-out:
- mutex_unlock(&gspca_dev->queue_lock);
- return ret;
-}
-
-static int frame_ready_nolock(struct gspca_dev *gspca_dev, struct file *file,
- enum v4l2_memory memory)
-{
- if (!gspca_dev->present)
- return -ENODEV;
- if (gspca_dev->capt_file != file || gspca_dev->memory != memory ||
- !gspca_dev->streaming)
- return -EINVAL;
-
- /* check if a frame is ready */
- return gspca_dev->fr_o != atomic_read(&gspca_dev->fr_i);
-}
-
-static int frame_ready(struct gspca_dev *gspca_dev, struct file *file,
- enum v4l2_memory memory)
-{
- int ret;
-
- if (mutex_lock_interruptible(&gspca_dev->queue_lock))
- return -ERESTARTSYS;
- ret = frame_ready_nolock(gspca_dev, file, memory);
- mutex_unlock(&gspca_dev->queue_lock);
- return ret;
-}
-
-/*
- * dequeue a video buffer
- *
- * If nonblock_ing is false, block until a buffer is available.
- */
-static int vidioc_dqbuf(struct file *file, void *priv,
- struct v4l2_buffer *v4l2_buf)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- struct gspca_frame *frame;
- int i, j, ret;
-
- PDEBUG(D_FRAM, "dqbuf");
-
- if (mutex_lock_interruptible(&gspca_dev->queue_lock))
- return -ERESTARTSYS;
-
- for (;;) {
- ret = frame_ready_nolock(gspca_dev, file, v4l2_buf->memory);
- if (ret < 0)
- goto out;
- if (ret > 0)
- break;
-
- mutex_unlock(&gspca_dev->queue_lock);
-
- if (file->f_flags & O_NONBLOCK)
- return -EAGAIN;
-
- /* wait till a frame is ready */
- ret = wait_event_interruptible_timeout(gspca_dev->wq,
- frame_ready(gspca_dev, file, v4l2_buf->memory),
- msecs_to_jiffies(3000));
- if (ret < 0)
- return ret;
- if (ret == 0)
- return -EIO;
-
- if (mutex_lock_interruptible(&gspca_dev->queue_lock))
- return -ERESTARTSYS;
- }
-
- i = gspca_dev->fr_o;
- j = gspca_dev->fr_queue[i];
- frame = &gspca_dev->frame[j];
-
- gspca_dev->fr_o = (i + 1) % GSPCA_MAX_FRAMES;
-
- frame->v4l2_buf.flags &= ~V4L2_BUF_FLAG_DONE;
- memcpy(v4l2_buf, &frame->v4l2_buf, sizeof *v4l2_buf);
- PDEBUG(D_FRAM, "dqbuf %d", j);
- ret = 0;
-
- if (gspca_dev->memory == V4L2_MEMORY_USERPTR) {
- if (copy_to_user((__u8 __user *) frame->v4l2_buf.m.userptr,
- frame->data,
- frame->v4l2_buf.bytesused)) {
- PDEBUG(D_ERR|D_STREAM,
- "dqbuf cp to user failed");
- ret = -EFAULT;
- }
- }
-out:
- mutex_unlock(&gspca_dev->queue_lock);
-
- if (ret == 0 && gspca_dev->sd_desc->dq_callback) {
- mutex_lock(&gspca_dev->usb_lock);
- gspca_dev->usb_err = 0;
- if (gspca_dev->present)
- gspca_dev->sd_desc->dq_callback(gspca_dev);
- mutex_unlock(&gspca_dev->usb_lock);
- }
-
- return ret;
-}
-
-/*
- * queue a video buffer
- *
- * Attempting to queue a buffer that has already been
- * queued will return -EINVAL.
- */
-static int vidioc_qbuf(struct file *file, void *priv,
- struct v4l2_buffer *v4l2_buf)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- struct gspca_frame *frame;
- int i, index, ret;
-
- PDEBUG(D_FRAM, "qbuf %d", v4l2_buf->index);
-
- if (mutex_lock_interruptible(&gspca_dev->queue_lock))
- return -ERESTARTSYS;
-
- index = v4l2_buf->index;
- if ((unsigned) index >= gspca_dev->nframes) {
- PDEBUG(D_FRAM,
- "qbuf idx %d >= %d", index, gspca_dev->nframes);
- ret = -EINVAL;
- goto out;
- }
- if (v4l2_buf->memory != gspca_dev->memory) {
- PDEBUG(D_FRAM, "qbuf bad memory type");
- ret = -EINVAL;
- goto out;
- }
-
- frame = &gspca_dev->frame[index];
- if (frame->v4l2_buf.flags & BUF_ALL_FLAGS) {
- PDEBUG(D_FRAM, "qbuf bad state");
- ret = -EINVAL;
- goto out;
- }
-
- frame->v4l2_buf.flags |= V4L2_BUF_FLAG_QUEUED;
-
- if (frame->v4l2_buf.memory == V4L2_MEMORY_USERPTR) {
- frame->v4l2_buf.m.userptr = v4l2_buf->m.userptr;
- frame->v4l2_buf.length = v4l2_buf->length;
- }
-
- /* put the buffer in the 'queued' queue */
- i = atomic_read(&gspca_dev->fr_q);
- gspca_dev->fr_queue[i] = index;
- atomic_set(&gspca_dev->fr_q, (i + 1) % GSPCA_MAX_FRAMES);
-
- v4l2_buf->flags |= V4L2_BUF_FLAG_QUEUED;
- v4l2_buf->flags &= ~V4L2_BUF_FLAG_DONE;
- ret = 0;
-out:
- mutex_unlock(&gspca_dev->queue_lock);
- return ret;
-}
-
-/*
- * allocate the resources for read()
- */
-static int read_alloc(struct gspca_dev *gspca_dev,
- struct file *file)
-{
- struct v4l2_buffer v4l2_buf;
- int i, ret;
-
- PDEBUG(D_STREAM, "read alloc");
-
- if (mutex_lock_interruptible(&gspca_dev->usb_lock))
- return -ERESTARTSYS;
-
- if (gspca_dev->nframes == 0) {
- struct v4l2_requestbuffers rb;
-
- memset(&rb, 0, sizeof rb);
- rb.count = gspca_dev->nbufread;
- rb.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- rb.memory = GSPCA_MEMORY_READ;
- ret = vidioc_reqbufs(file, gspca_dev, &rb);
- if (ret != 0) {
- PDEBUG(D_STREAM, "read reqbuf err %d", ret);
- goto out;
- }
- memset(&v4l2_buf, 0, sizeof v4l2_buf);
- v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- v4l2_buf.memory = GSPCA_MEMORY_READ;
- for (i = 0; i < gspca_dev->nbufread; i++) {
- v4l2_buf.index = i;
- ret = vidioc_qbuf(file, gspca_dev, &v4l2_buf);
- if (ret != 0) {
- PDEBUG(D_STREAM, "read qbuf err: %d", ret);
- goto out;
- }
- }
- }
-
- /* start streaming */
- ret = vidioc_streamon(file, gspca_dev, V4L2_BUF_TYPE_VIDEO_CAPTURE);
- if (ret != 0)
- PDEBUG(D_STREAM, "read streamon err %d", ret);
-out:
- mutex_unlock(&gspca_dev->usb_lock);
- return ret;
-}
-
-static unsigned int dev_poll(struct file *file, poll_table *wait)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- unsigned long req_events = poll_requested_events(wait);
- int ret = 0;
-
- PDEBUG(D_FRAM, "poll");
-
- if (req_events & POLLPRI)
- ret |= v4l2_ctrl_poll(file, wait);
-
- if (req_events & (POLLIN | POLLRDNORM)) {
- /* if reqbufs is not done, the user would use read() */
- if (gspca_dev->memory == GSPCA_MEMORY_NO) {
- if (read_alloc(gspca_dev, file) != 0) {
- ret |= POLLERR;
- goto out;
- }
- }
-
- poll_wait(file, &gspca_dev->wq, wait);
-
- /* check if an image has been received */
- if (mutex_lock_interruptible(&gspca_dev->queue_lock) != 0) {
- ret |= POLLERR;
- goto out;
- }
- if (gspca_dev->fr_o != atomic_read(&gspca_dev->fr_i))
- ret |= POLLIN | POLLRDNORM;
- mutex_unlock(&gspca_dev->queue_lock);
- }
-
-out:
- if (!gspca_dev->present)
- ret |= POLLHUP;
-
- return ret;
-}
-
-static ssize_t dev_read(struct file *file, char __user *data,
- size_t count, loff_t *ppos)
-{
- struct gspca_dev *gspca_dev = video_drvdata(file);
- struct gspca_frame *frame;
- struct v4l2_buffer v4l2_buf;
- struct timeval timestamp;
- int n, ret, ret2;
-
- PDEBUG(D_FRAM, "read (%zd)", count);
- if (gspca_dev->memory == GSPCA_MEMORY_NO) { /* first time ? */
- ret = read_alloc(gspca_dev, file);
- if (ret != 0)
- return ret;
- }
-
- /* get a frame */
- timestamp = ktime_to_timeval(ktime_get());
- timestamp.tv_sec--;
- n = 2;
- for (;;) {
- memset(&v4l2_buf, 0, sizeof v4l2_buf);
- v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- v4l2_buf.memory = GSPCA_MEMORY_READ;
- ret = vidioc_dqbuf(file, gspca_dev, &v4l2_buf);
- if (ret != 0) {
- PDEBUG(D_STREAM, "read dqbuf err %d", ret);
- return ret;
- }
-
- /* if the process slept for more than 1 second,
- * get a newer frame */
- frame = &gspca_dev->frame[v4l2_buf.index];
- if (--n < 0)
- break; /* avoid infinite loop */
- if (frame->v4l2_buf.timestamp.tv_sec >= timestamp.tv_sec)
- break;
- ret = vidioc_qbuf(file, gspca_dev, &v4l2_buf);
- if (ret != 0) {
- PDEBUG(D_STREAM, "read qbuf err %d", ret);
- return ret;
- }
- }
-
- /* copy the frame */
- if (count > frame->v4l2_buf.bytesused)
- count = frame->v4l2_buf.bytesused;
- ret = copy_to_user(data, frame->data, count);
- if (ret != 0) {
- PDEBUG(D_ERR|D_STREAM,
- "read cp to user lack %d / %zd", ret, count);
- ret = -EFAULT;
- goto out;
- }
- ret = count;
-out:
- /* in each case, requeue the buffer */
- ret2 = vidioc_qbuf(file, gspca_dev, &v4l2_buf);
- if (ret2 != 0)
- return ret2;
- return ret;
-}
-
-static struct v4l2_file_operations dev_fops = {
- .owner = THIS_MODULE,
- .open = dev_open,
- .release = dev_close,
- .read = dev_read,
- .mmap = dev_mmap,
- .unlocked_ioctl = video_ioctl2,
- .poll = dev_poll,
-};
-
-static const struct v4l2_ioctl_ops dev_ioctl_ops = {
- .vidioc_querycap = vidioc_querycap,
- .vidioc_dqbuf = vidioc_dqbuf,
- .vidioc_qbuf = vidioc_qbuf,
- .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
- .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
- .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
- .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
- .vidioc_streamon = vidioc_streamon,
- .vidioc_queryctrl = vidioc_queryctrl,
- .vidioc_g_ctrl = vidioc_g_ctrl,
- .vidioc_s_ctrl = vidioc_s_ctrl,
- .vidioc_querymenu = vidioc_querymenu,
- .vidioc_enum_input = vidioc_enum_input,
- .vidioc_g_input = vidioc_g_input,
- .vidioc_s_input = vidioc_s_input,
- .vidioc_reqbufs = vidioc_reqbufs,
- .vidioc_querybuf = vidioc_querybuf,
- .vidioc_streamoff = vidioc_streamoff,
- .vidioc_g_jpegcomp = vidioc_g_jpegcomp,
- .vidioc_s_jpegcomp = vidioc_s_jpegcomp,
- .vidioc_g_parm = vidioc_g_parm,
- .vidioc_s_parm = vidioc_s_parm,
- .vidioc_enum_framesizes = vidioc_enum_framesizes,
- .vidioc_enum_frameintervals = vidioc_enum_frameintervals,
-#ifdef CONFIG_VIDEO_ADV_DEBUG
- .vidioc_g_register = vidioc_g_register,
- .vidioc_s_register = vidioc_s_register,
-#endif
- .vidioc_g_chip_ident = vidioc_g_chip_ident,
- .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
- .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
-};
-
-static const struct video_device gspca_template = {
- .name = "gspca main driver",
- .fops = &dev_fops,
- .ioctl_ops = &dev_ioctl_ops,
- .release = video_device_release_empty, /* We use v4l2_dev.release */
-};
-
-/* initialize the controls */
-static void ctrls_init(struct gspca_dev *gspca_dev)
-{
- struct gspca_ctrl *ctrl;
- int i;
-
- for (i = 0, ctrl = gspca_dev->cam.ctrls;
- i < gspca_dev->sd_desc->nctrls;
- i++, ctrl++) {
- ctrl->def = gspca_dev->sd_desc->ctrls[i].qctrl.default_value;
- ctrl->val = ctrl->def;
- ctrl->min = gspca_dev->sd_desc->ctrls[i].qctrl.minimum;
- ctrl->max = gspca_dev->sd_desc->ctrls[i].qctrl.maximum;
- }
-}
-
-/*
- * probe and create a new gspca device
- *
- * This function must be called by the sub-driver when it is
- * called for probing a new device.
- */
-int gspca_dev_probe2(struct usb_interface *intf,
- const struct usb_device_id *id,
- const struct sd_desc *sd_desc,
- int dev_size,
- struct module *module)
-{
- struct gspca_dev *gspca_dev;
- struct usb_device *dev = interface_to_usbdev(intf);
- int ret;
-
- pr_info("%s-" GSPCA_VERSION " probing %04x:%04x\n",
- sd_desc->name, id->idVendor, id->idProduct);
-
- /* create the device */
- if (dev_size < sizeof *gspca_dev)
- dev_size = sizeof *gspca_dev;
- gspca_dev = kzalloc(dev_size, GFP_KERNEL);
- if (!gspca_dev) {
- pr_err("couldn't kzalloc gspca struct\n");
- return -ENOMEM;
- }
- gspca_dev->usb_buf = kmalloc(USB_BUF_SZ, GFP_KERNEL);
- if (!gspca_dev->usb_buf) {
- pr_err("out of memory\n");
- ret = -ENOMEM;
- goto out;
- }
- gspca_dev->dev = dev;
- gspca_dev->iface = intf->cur_altsetting->desc.bInterfaceNumber;
-
- /* check if any audio device */
- if (dev->actconfig->desc.bNumInterfaces != 1) {
- int i;
- struct usb_interface *intf2;
-
- for (i = 0; i < dev->actconfig->desc.bNumInterfaces; i++) {
- intf2 = dev->actconfig->interface[i];
- if (intf2 != NULL
- && intf2->altsetting != NULL
- && intf2->altsetting->desc.bInterfaceClass ==
- USB_CLASS_AUDIO) {
- gspca_dev->audio = 1;
- break;
- }
- }
- }
-
- gspca_dev->v4l2_dev.release = gspca_release;
- ret = v4l2_device_register(&intf->dev, &gspca_dev->v4l2_dev);
- if (ret)
- goto out;
- gspca_dev->sd_desc = sd_desc;
- gspca_dev->nbufread = 2;
- gspca_dev->empty_packet = -1; /* don't check the empty packets */
- gspca_dev->vdev = gspca_template;
- gspca_dev->vdev.v4l2_dev = &gspca_dev->v4l2_dev;
- video_set_drvdata(&gspca_dev->vdev, gspca_dev);
- set_bit(V4L2_FL_USE_FH_PRIO, &gspca_dev->vdev.flags);
- gspca_dev->module = module;
- gspca_dev->present = 1;
-
- mutex_init(&gspca_dev->usb_lock);
- gspca_dev->vdev.lock = &gspca_dev->usb_lock;
- mutex_init(&gspca_dev->queue_lock);
- init_waitqueue_head(&gspca_dev->wq);
-
- /* configure the subdriver and initialize the USB device */
- ret = sd_desc->config(gspca_dev, id);
- if (ret < 0)
- goto out;
- if (gspca_dev->cam.ctrls != NULL)
- ctrls_init(gspca_dev);
- ret = sd_desc->init(gspca_dev);
- if (ret < 0)
- goto out;
- if (sd_desc->init_controls)
- ret = sd_desc->init_controls(gspca_dev);
- if (ret < 0)
- goto out;
- gspca_set_default_mode(gspca_dev);
-
- ret = gspca_input_connect(gspca_dev);
- if (ret)
- goto out;
-
- /*
- * Don't take usb_lock for these ioctls. This improves latency if
- * usb_lock is taken for a long time, e.g. when changing a control
- * value, and a new frame is ready to be dequeued.
- */
- v4l2_disable_ioctl_locking(&gspca_dev->vdev, VIDIOC_DQBUF);
- v4l2_disable_ioctl_locking(&gspca_dev->vdev, VIDIOC_QBUF);
- v4l2_disable_ioctl_locking(&gspca_dev->vdev, VIDIOC_QUERYBUF);
- if (!gspca_dev->sd_desc->get_chip_ident)
- v4l2_disable_ioctl(&gspca_dev->vdev, VIDIOC_DBG_G_CHIP_IDENT);
-#ifdef CONFIG_VIDEO_ADV_DEBUG
- if (!gspca_dev->sd_desc->get_chip_ident ||
- !gspca_dev->sd_desc->get_register)
- v4l2_disable_ioctl(&gspca_dev->vdev, VIDIOC_DBG_G_REGISTER);
- if (!gspca_dev->sd_desc->get_chip_ident ||
- !gspca_dev->sd_desc->set_register)
- v4l2_disable_ioctl(&gspca_dev->vdev, VIDIOC_DBG_S_REGISTER);
-#endif
- if (!gspca_dev->sd_desc->get_jcomp)
- v4l2_disable_ioctl(&gspca_dev->vdev, VIDIOC_G_JPEGCOMP);
- if (!gspca_dev->sd_desc->set_jcomp)
- v4l2_disable_ioctl(&gspca_dev->vdev, VIDIOC_S_JPEGCOMP);
-
- /* init video stuff */
- ret = video_register_device(&gspca_dev->vdev,
- VFL_TYPE_GRABBER,
- -1);
- if (ret < 0) {
- pr_err("video_register_device err %d\n", ret);
- goto out;
- }
-
- usb_set_intfdata(intf, gspca_dev);
- PDEBUG(D_PROBE, "%s created", video_device_node_name(&gspca_dev->vdev));
-
- gspca_input_create_urb(gspca_dev);
-
- return 0;
-out:
-#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
- if (gspca_dev->input_dev)
- input_unregister_device(gspca_dev->input_dev);
-#endif
- v4l2_ctrl_handler_free(gspca_dev->vdev.ctrl_handler);
- kfree(gspca_dev->usb_buf);
- kfree(gspca_dev);
- return ret;
-}
-EXPORT_SYMBOL(gspca_dev_probe2);
-
-/* same function as the previous one, but check the interface */
-int gspca_dev_probe(struct usb_interface *intf,
- const struct usb_device_id *id,
- const struct sd_desc *sd_desc,
- int dev_size,
- struct module *module)
-{
- struct usb_device *dev = interface_to_usbdev(intf);
-
- /* we don't handle multi-config cameras */
- if (dev->descriptor.bNumConfigurations != 1) {
- pr_err("%04x:%04x too many config\n",
- id->idVendor, id->idProduct);
- return -ENODEV;
- }
-
- /* the USB video interface must be the first one */
- if (dev->actconfig->desc.bNumInterfaces != 1
- && intf->cur_altsetting->desc.bInterfaceNumber != 0)
- return -ENODEV;
-
- return gspca_dev_probe2(intf, id, sd_desc, dev_size, module);
-}
-EXPORT_SYMBOL(gspca_dev_probe);
-
-/*
- * USB disconnection
- *
- * This function must be called by the sub-driver
- * when the device disconnects, after the specific resources are freed.
- */
-void gspca_disconnect(struct usb_interface *intf)
-{
- struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
-#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
- struct input_dev *input_dev;
-#endif
-
- PDEBUG(D_PROBE, "%s disconnect",
- video_device_node_name(&gspca_dev->vdev));
-
- mutex_lock(&gspca_dev->usb_lock);
-
- usb_set_intfdata(intf, NULL);
- gspca_dev->dev = NULL;
- gspca_dev->present = 0;
- destroy_urbs(gspca_dev);
-
-#if defined(CONFIG_INPUT) || defined(CONFIG_INPUT_MODULE)
- gspca_input_destroy_urb(gspca_dev);
- input_dev = gspca_dev->input_dev;
- if (input_dev) {
- gspca_dev->input_dev = NULL;
- input_unregister_device(input_dev);
- }
-#endif
- /* Free subdriver's streaming resources / stop sd workqueue(s) */
- if (gspca_dev->sd_desc->stop0 && gspca_dev->streaming)
- gspca_dev->sd_desc->stop0(gspca_dev);
- gspca_dev->streaming = 0;
- wake_up_interruptible(&gspca_dev->wq);
-
- v4l2_device_disconnect(&gspca_dev->v4l2_dev);
- video_unregister_device(&gspca_dev->vdev);
-
- mutex_unlock(&gspca_dev->usb_lock);
-
- /* (this will call gspca_release() immediately or on last close) */
- v4l2_device_put(&gspca_dev->v4l2_dev);
-}
-EXPORT_SYMBOL(gspca_disconnect);
-
-#ifdef CONFIG_PM
-int gspca_suspend(struct usb_interface *intf, pm_message_t message)
-{
- struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
-
- if (!gspca_dev->streaming)
- return 0;
- mutex_lock(&gspca_dev->usb_lock);
- gspca_dev->frozen = 1; /* avoid urb error messages */
- gspca_dev->usb_err = 0;
- if (gspca_dev->sd_desc->stopN)
- gspca_dev->sd_desc->stopN(gspca_dev);
- destroy_urbs(gspca_dev);
- gspca_input_destroy_urb(gspca_dev);
- gspca_set_alt0(gspca_dev);
- if (gspca_dev->sd_desc->stop0)
- gspca_dev->sd_desc->stop0(gspca_dev);
- mutex_unlock(&gspca_dev->usb_lock);
- return 0;
-}
-EXPORT_SYMBOL(gspca_suspend);
-
-int gspca_resume(struct usb_interface *intf)
-{
- struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
- int streaming, ret = 0;
-
- mutex_lock(&gspca_dev->usb_lock);
- gspca_dev->frozen = 0;
- gspca_dev->usb_err = 0;
- gspca_dev->sd_desc->init(gspca_dev);
- gspca_input_create_urb(gspca_dev);
- /*
- * Most subdrivers send all ctrl values on sd_start and thus
- * only write to the device registers on s_ctrl when streaming ->
- * Clear streaming to avoid setting all ctrls twice.
- */
- streaming = gspca_dev->streaming;
- gspca_dev->streaming = 0;
- if (streaming)
- ret = gspca_init_transfer(gspca_dev);
- mutex_unlock(&gspca_dev->usb_lock);
- return ret;
-}
-EXPORT_SYMBOL(gspca_resume);
-#endif
-
-/* -- module insert / remove -- */
-static int __init gspca_init(void)
-{
- pr_info("v" GSPCA_VERSION " registered\n");
- return 0;
-}
-static void __exit gspca_exit(void)
-{
-}
-
-module_init(gspca_init);
-module_exit(gspca_exit);
-
-#ifdef GSPCA_DEBUG
-module_param_named(debug, gspca_debug, int, 0644);
-MODULE_PARM_DESC(debug,
- "Debug (bit) 0x01:error 0x02:probe 0x04:config"
- " 0x08:stream 0x10:frame 0x20:packet"
- " 0x0100: v4l2");
-#endif