[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>
This commit is contained in:
Mauro Carvalho Chehab
738
drivers/media/usb/stk1160/stk1160-v4l.c
Normal file
738
drivers/media/usb/stk1160/stk1160-v4l.c
Normal file
@@ -0,0 +1,738 @@
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/*
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* STK1160 driver
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*
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* Copyright (C) 2012 Ezequiel Garcia
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* <elezegarcia--a.t--gmail.com>
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*
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* Based on Easycap driver by R.M. Thomas
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* Copyright (C) 2010 R.M. Thomas
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* <rmthomas--a.t--sciolus.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/module.h>
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#include <linux/usb.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-fh.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-chip-ident.h>
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#include <media/videobuf2-vmalloc.h>
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#include <media/saa7115.h>
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#include "stk1160.h"
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#include "stk1160-reg.h"
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static unsigned int vidioc_debug;
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module_param(vidioc_debug, int, 0644);
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MODULE_PARM_DESC(vidioc_debug, "enable debug messages [vidioc]");
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static bool keep_buffers;
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module_param(keep_buffers, bool, 0644);
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MODULE_PARM_DESC(keep_buffers, "don't release buffers upon stop streaming");
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/* supported video standards */
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static struct stk1160_fmt format[] = {
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{
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.name = "16 bpp YUY2, 4:2:2, packed",
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.fourcc = V4L2_PIX_FMT_UYVY,
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.depth = 16,
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}
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};
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static void stk1160_set_std(struct stk1160 *dev)
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{
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int i;
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static struct regval std525[] = {
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/* 720x480 */
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/* Frame start */
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{STK116_CFSPO_STX_L, 0x0000},
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{STK116_CFSPO_STX_H, 0x0000},
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{STK116_CFSPO_STY_L, 0x0003},
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{STK116_CFSPO_STY_H, 0x0000},
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/* Frame end */
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{STK116_CFEPO_ENX_L, 0x05a0},
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{STK116_CFEPO_ENX_H, 0x0005},
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{STK116_CFEPO_ENY_L, 0x00f3},
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{STK116_CFEPO_ENY_H, 0x0000},
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{0xffff, 0xffff}
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};
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static struct regval std625[] = {
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/* 720x576 */
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/* TODO: Each line of frame has some junk at the end */
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/* Frame start */
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{STK116_CFSPO, 0x0000},
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{STK116_CFSPO+1, 0x0000},
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{STK116_CFSPO+2, 0x0001},
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{STK116_CFSPO+3, 0x0000},
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/* Frame end */
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{STK116_CFEPO, 0x05a0},
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{STK116_CFEPO+1, 0x0005},
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{STK116_CFEPO+2, 0x0121},
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{STK116_CFEPO+3, 0x0001},
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{0xffff, 0xffff}
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};
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if (dev->norm & V4L2_STD_525_60) {
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stk1160_dbg("registers to NTSC like standard\n");
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for (i = 0; std525[i].reg != 0xffff; i++)
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stk1160_write_reg(dev, std525[i].reg, std525[i].val);
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} else {
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stk1160_dbg("registers to PAL like standard\n");
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for (i = 0; std625[i].reg != 0xffff; i++)
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stk1160_write_reg(dev, std625[i].reg, std625[i].val);
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}
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}
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/*
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* Set a new alternate setting.
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* Returns true is dev->max_pkt_size has changed, false otherwise.
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*/
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static bool stk1160_set_alternate(struct stk1160 *dev)
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{
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int i, prev_alt = dev->alt;
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unsigned int min_pkt_size;
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bool new_pkt_size;
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/*
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* If we don't set right alternate,
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* then we will get a green screen with junk.
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*/
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min_pkt_size = STK1160_MIN_PKT_SIZE;
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for (i = 0; i < dev->num_alt; i++) {
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/* stop when the selected alt setting offers enough bandwidth */
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if (dev->alt_max_pkt_size[i] >= min_pkt_size) {
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dev->alt = i;
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break;
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/*
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* otherwise make sure that we end up with the maximum bandwidth
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* because the min_pkt_size equation might be wrong...
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*/
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} else if (dev->alt_max_pkt_size[i] >
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dev->alt_max_pkt_size[dev->alt])
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dev->alt = i;
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}
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stk1160_info("setting alternate %d\n", dev->alt);
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if (dev->alt != prev_alt) {
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stk1160_dbg("minimum isoc packet size: %u (alt=%d)\n",
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min_pkt_size, dev->alt);
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stk1160_dbg("setting alt %d with wMaxPacketSize=%u\n",
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dev->alt, dev->alt_max_pkt_size[dev->alt]);
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usb_set_interface(dev->udev, 0, dev->alt);
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}
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new_pkt_size = dev->max_pkt_size != dev->alt_max_pkt_size[dev->alt];
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dev->max_pkt_size = dev->alt_max_pkt_size[dev->alt];
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return new_pkt_size;
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}
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static int stk1160_start_streaming(struct stk1160 *dev)
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{
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int i, rc;
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bool new_pkt_size;
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/* Check device presence */
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if (!dev->udev)
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return -ENODEV;
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if (mutex_lock_interruptible(&dev->v4l_lock))
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return -ERESTARTSYS;
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/*
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* For some reason it is mandatory to set alternate *first*
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* and only *then* initialize isoc urbs.
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* Someone please explain me why ;)
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*/
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new_pkt_size = stk1160_set_alternate(dev);
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/*
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* We (re)allocate isoc urbs if:
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* there is no allocated isoc urbs, OR
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* a new dev->max_pkt_size is detected
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*/
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if (!dev->isoc_ctl.num_bufs || new_pkt_size) {
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rc = stk1160_alloc_isoc(dev);
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if (rc < 0)
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return rc;
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}
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/* submit urbs and enables IRQ */
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for (i = 0; i < dev->isoc_ctl.num_bufs; i++) {
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rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_KERNEL);
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if (rc) {
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stk1160_err("cannot submit urb[%d] (%d)\n", i, rc);
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stk1160_uninit_isoc(dev);
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return rc;
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}
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}
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/* Start saa711x */
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v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 1);
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/* Start stk1160 */
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stk1160_write_reg(dev, STK1160_DCTRL, 0xb3);
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stk1160_write_reg(dev, STK1160_DCTRL+3, 0x00);
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stk1160_dbg("streaming started\n");
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mutex_unlock(&dev->v4l_lock);
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return 0;
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}
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/* Must be called with v4l_lock hold */
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static void stk1160_stop_hw(struct stk1160 *dev)
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{
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/* If the device is not physically present, there is nothing to do */
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if (!dev->udev)
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return;
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/* set alternate 0 */
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dev->alt = 0;
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stk1160_info("setting alternate %d\n", dev->alt);
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usb_set_interface(dev->udev, 0, 0);
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/* Stop stk1160 */
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stk1160_write_reg(dev, STK1160_DCTRL, 0x00);
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stk1160_write_reg(dev, STK1160_DCTRL+3, 0x00);
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/* Stop saa711x */
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v4l2_device_call_all(&dev->v4l2_dev, 0, video, s_stream, 0);
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}
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static int stk1160_stop_streaming(struct stk1160 *dev)
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{
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if (mutex_lock_interruptible(&dev->v4l_lock))
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return -ERESTARTSYS;
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stk1160_cancel_isoc(dev);
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/*
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* It is possible to keep buffers around using a module parameter.
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* This is intended to avoid memory fragmentation.
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*/
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if (!keep_buffers)
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stk1160_free_isoc(dev);
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stk1160_stop_hw(dev);
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stk1160_clear_queue(dev);
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stk1160_dbg("streaming stopped\n");
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mutex_unlock(&dev->v4l_lock);
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return 0;
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}
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static struct v4l2_file_operations stk1160_fops = {
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.owner = THIS_MODULE,
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.open = v4l2_fh_open,
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.release = vb2_fop_release,
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.read = vb2_fop_read,
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.poll = vb2_fop_poll,
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.mmap = vb2_fop_mmap,
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.unlocked_ioctl = video_ioctl2,
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};
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/*
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* vidioc ioctls
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*/
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static int vidioc_querycap(struct file *file,
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void *priv, struct v4l2_capability *cap)
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{
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struct stk1160 *dev = video_drvdata(file);
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strcpy(cap->driver, "stk1160");
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strcpy(cap->card, "stk1160");
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usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
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cap->device_caps =
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V4L2_CAP_VIDEO_CAPTURE |
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V4L2_CAP_STREAMING |
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V4L2_CAP_READWRITE;
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cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
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return 0;
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}
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static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
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struct v4l2_fmtdesc *f)
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{
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if (f->index != 0)
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return -EINVAL;
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strlcpy(f->description, format[f->index].name, sizeof(f->description));
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f->pixelformat = format[f->index].fourcc;
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return 0;
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}
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static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
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struct v4l2_format *f)
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{
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struct stk1160 *dev = video_drvdata(file);
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f->fmt.pix.width = dev->width;
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f->fmt.pix.height = dev->height;
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f->fmt.pix.field = V4L2_FIELD_INTERLACED;
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f->fmt.pix.pixelformat = dev->fmt->fourcc;
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f->fmt.pix.bytesperline = dev->width * 2;
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f->fmt.pix.sizeimage = dev->height * f->fmt.pix.bytesperline;
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f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
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return 0;
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}
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static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
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struct v4l2_format *f)
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{
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struct stk1160 *dev = video_drvdata(file);
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if (f->fmt.pix.pixelformat != format[0].fourcc) {
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stk1160_err("fourcc format 0x%08x invalid\n",
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f->fmt.pix.pixelformat);
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return -EINVAL;
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}
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/*
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* User can't choose size at his own will,
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* so we just return him the current size chosen
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* at standard selection.
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* TODO: Implement frame scaling?
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*/
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f->fmt.pix.width = dev->width;
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f->fmt.pix.height = dev->height;
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f->fmt.pix.field = V4L2_FIELD_INTERLACED;
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f->fmt.pix.bytesperline = dev->width * 2;
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f->fmt.pix.sizeimage = dev->height * f->fmt.pix.bytesperline;
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f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
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return 0;
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}
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static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
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struct v4l2_format *f)
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{
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struct stk1160 *dev = video_drvdata(file);
|
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struct vb2_queue *q = &dev->vb_vidq;
|
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int rc;
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|
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if (vb2_is_busy(q))
|
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return -EBUSY;
|
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rc = vidioc_try_fmt_vid_cap(file, priv, f);
|
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if (rc < 0)
|
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return rc;
|
||||
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/* We don't support any format changes */
|
||||
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return 0;
|
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}
|
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|
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static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *norm)
|
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{
|
||||
struct stk1160 *dev = video_drvdata(file);
|
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v4l2_device_call_all(&dev->v4l2_dev, 0, video, querystd, norm);
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||||
return 0;
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||||
}
|
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|
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static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *norm)
|
||||
{
|
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struct stk1160 *dev = video_drvdata(file);
|
||||
|
||||
*norm = dev->norm;
|
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return 0;
|
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}
|
||||
|
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static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *norm)
|
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{
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struct stk1160 *dev = video_drvdata(file);
|
||||
struct vb2_queue *q = &dev->vb_vidq;
|
||||
|
||||
if (vb2_is_busy(q))
|
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return -EBUSY;
|
||||
|
||||
/* Check device presence */
|
||||
if (!dev->udev)
|
||||
return -ENODEV;
|
||||
|
||||
/* We need to set this now, before we call stk1160_set_std */
|
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dev->norm = *norm;
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||||
|
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/* This is taken from saa7115 video decoder */
|
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if (dev->norm & V4L2_STD_525_60) {
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dev->width = 720;
|
||||
dev->height = 480;
|
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} else if (dev->norm & V4L2_STD_625_50) {
|
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dev->width = 720;
|
||||
dev->height = 576;
|
||||
} else {
|
||||
stk1160_err("invalid standard\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
stk1160_set_std(dev);
|
||||
|
||||
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std,
|
||||
dev->norm);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int vidioc_enum_input(struct file *file, void *priv,
|
||||
struct v4l2_input *i)
|
||||
{
|
||||
struct stk1160 *dev = video_drvdata(file);
|
||||
|
||||
if (i->index > STK1160_MAX_INPUT)
|
||||
return -EINVAL;
|
||||
|
||||
sprintf(i->name, "Composite%d", i->index);
|
||||
i->type = V4L2_INPUT_TYPE_CAMERA;
|
||||
i->std = dev->vdev.tvnorms;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
|
||||
{
|
||||
struct stk1160 *dev = video_drvdata(file);
|
||||
*i = dev->ctl_input;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
|
||||
{
|
||||
struct stk1160 *dev = video_drvdata(file);
|
||||
|
||||
if (vb2_is_busy(&dev->vb_vidq))
|
||||
return -EBUSY;
|
||||
|
||||
if (i > STK1160_MAX_INPUT)
|
||||
return -EINVAL;
|
||||
|
||||
dev->ctl_input = i;
|
||||
|
||||
stk1160_select_input(dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_g_chip_ident(struct file *file, void *priv,
|
||||
struct v4l2_dbg_chip_ident *chip)
|
||||
{
|
||||
switch (chip->match.type) {
|
||||
case V4L2_CHIP_MATCH_HOST:
|
||||
chip->ident = V4L2_IDENT_NONE;
|
||||
chip->revision = 0;
|
||||
return 0;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
||||
static int vidioc_g_register(struct file *file, void *priv,
|
||||
struct v4l2_dbg_register *reg)
|
||||
{
|
||||
struct stk1160 *dev = video_drvdata(file);
|
||||
int rc;
|
||||
u8 val;
|
||||
|
||||
switch (reg->match.type) {
|
||||
case V4L2_CHIP_MATCH_AC97:
|
||||
/* TODO: Support me please :-( */
|
||||
return -EINVAL;
|
||||
case V4L2_CHIP_MATCH_I2C_DRIVER:
|
||||
v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
|
||||
return 0;
|
||||
case V4L2_CHIP_MATCH_I2C_ADDR:
|
||||
/* TODO: is this correct? */
|
||||
v4l2_device_call_all(&dev->v4l2_dev, 0, core, g_register, reg);
|
||||
return 0;
|
||||
default:
|
||||
if (!v4l2_chip_match_host(®->match))
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Match host */
|
||||
rc = stk1160_read_reg(dev, reg->reg, &val);
|
||||
reg->val = val;
|
||||
reg->size = 1;
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int vidioc_s_register(struct file *file, void *priv,
|
||||
struct v4l2_dbg_register *reg)
|
||||
{
|
||||
struct stk1160 *dev = video_drvdata(file);
|
||||
|
||||
switch (reg->match.type) {
|
||||
case V4L2_CHIP_MATCH_AC97:
|
||||
return -EINVAL;
|
||||
case V4L2_CHIP_MATCH_I2C_DRIVER:
|
||||
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
|
||||
return 0;
|
||||
case V4L2_CHIP_MATCH_I2C_ADDR:
|
||||
/* TODO: is this correct? */
|
||||
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_register, reg);
|
||||
return 0;
|
||||
default:
|
||||
if (!v4l2_chip_match_host(®->match))
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Match host */
|
||||
return stk1160_write_reg(dev, reg->reg, cpu_to_le16(reg->val));
|
||||
}
|
||||
#endif
|
||||
|
||||
static const struct v4l2_ioctl_ops stk1160_ioctl_ops = {
|
||||
.vidioc_querycap = vidioc_querycap,
|
||||
.vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap,
|
||||
.vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap,
|
||||
.vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap,
|
||||
.vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap,
|
||||
.vidioc_querystd = vidioc_querystd,
|
||||
.vidioc_g_std = vidioc_g_std,
|
||||
.vidioc_s_std = vidioc_s_std,
|
||||
.vidioc_enum_input = vidioc_enum_input,
|
||||
.vidioc_g_input = vidioc_g_input,
|
||||
.vidioc_s_input = vidioc_s_input,
|
||||
|
||||
/* vb2 takes care of these */
|
||||
.vidioc_reqbufs = vb2_ioctl_reqbufs,
|
||||
.vidioc_querybuf = vb2_ioctl_querybuf,
|
||||
.vidioc_qbuf = vb2_ioctl_qbuf,
|
||||
.vidioc_dqbuf = vb2_ioctl_dqbuf,
|
||||
.vidioc_streamon = vb2_ioctl_streamon,
|
||||
.vidioc_streamoff = vb2_ioctl_streamoff,
|
||||
|
||||
.vidioc_log_status = v4l2_ctrl_log_status,
|
||||
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
|
||||
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
|
||||
.vidioc_g_chip_ident = vidioc_g_chip_ident,
|
||||
|
||||
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
||||
.vidioc_g_register = vidioc_g_register,
|
||||
.vidioc_s_register = vidioc_s_register,
|
||||
#endif
|
||||
};
|
||||
|
||||
/********************************************************************/
|
||||
|
||||
/*
|
||||
* Videobuf2 operations
|
||||
*/
|
||||
static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *v4l_fmt,
|
||||
unsigned int *nbuffers, unsigned int *nplanes,
|
||||
unsigned int sizes[], void *alloc_ctxs[])
|
||||
{
|
||||
struct stk1160 *dev = vb2_get_drv_priv(vq);
|
||||
unsigned long size;
|
||||
|
||||
size = dev->width * dev->height * 2;
|
||||
|
||||
/*
|
||||
* Here we can change the number of buffers being requested.
|
||||
* So, we set a minimum and a maximum like this:
|
||||
*/
|
||||
*nbuffers = clamp_t(unsigned int, *nbuffers,
|
||||
STK1160_MIN_VIDEO_BUFFERS, STK1160_MAX_VIDEO_BUFFERS);
|
||||
|
||||
/* This means a packed colorformat */
|
||||
*nplanes = 1;
|
||||
|
||||
sizes[0] = size;
|
||||
|
||||
stk1160_info("%s: buffer count %d, each %ld bytes\n",
|
||||
__func__, *nbuffers, size);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void buffer_queue(struct vb2_buffer *vb)
|
||||
{
|
||||
unsigned long flags;
|
||||
struct stk1160 *dev = vb2_get_drv_priv(vb->vb2_queue);
|
||||
struct stk1160_buffer *buf =
|
||||
container_of(vb, struct stk1160_buffer, vb);
|
||||
|
||||
spin_lock_irqsave(&dev->buf_lock, flags);
|
||||
if (!dev->udev) {
|
||||
/*
|
||||
* If the device is disconnected return the buffer to userspace
|
||||
* directly. The next QBUF call will fail with -ENODEV.
|
||||
*/
|
||||
vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
|
||||
} else {
|
||||
|
||||
buf->mem = vb2_plane_vaddr(vb, 0);
|
||||
buf->length = vb2_plane_size(vb, 0);
|
||||
buf->bytesused = 0;
|
||||
buf->pos = 0;
|
||||
|
||||
/*
|
||||
* If buffer length is less from expected then we return
|
||||
* the buffer to userspace directly.
|
||||
*/
|
||||
if (buf->length < dev->width * dev->height * 2)
|
||||
vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
|
||||
else
|
||||
list_add_tail(&buf->list, &dev->avail_bufs);
|
||||
|
||||
}
|
||||
spin_unlock_irqrestore(&dev->buf_lock, flags);
|
||||
}
|
||||
|
||||
static int start_streaming(struct vb2_queue *vq, unsigned int count)
|
||||
{
|
||||
struct stk1160 *dev = vb2_get_drv_priv(vq);
|
||||
return stk1160_start_streaming(dev);
|
||||
}
|
||||
|
||||
/* abort streaming and wait for last buffer */
|
||||
static int stop_streaming(struct vb2_queue *vq)
|
||||
{
|
||||
struct stk1160 *dev = vb2_get_drv_priv(vq);
|
||||
return stk1160_stop_streaming(dev);
|
||||
}
|
||||
|
||||
static struct vb2_ops stk1160_video_qops = {
|
||||
.queue_setup = queue_setup,
|
||||
.buf_queue = buffer_queue,
|
||||
.start_streaming = start_streaming,
|
||||
.stop_streaming = stop_streaming,
|
||||
.wait_prepare = vb2_ops_wait_prepare,
|
||||
.wait_finish = vb2_ops_wait_finish,
|
||||
};
|
||||
|
||||
static struct video_device v4l_template = {
|
||||
.name = "stk1160",
|
||||
.tvnorms = V4L2_STD_525_60 | V4L2_STD_625_50,
|
||||
.fops = &stk1160_fops,
|
||||
.ioctl_ops = &stk1160_ioctl_ops,
|
||||
.release = video_device_release_empty,
|
||||
};
|
||||
|
||||
/********************************************************************/
|
||||
|
||||
/* Must be called with both v4l_lock and vb_queue_lock hold */
|
||||
void stk1160_clear_queue(struct stk1160 *dev)
|
||||
{
|
||||
struct stk1160_buffer *buf;
|
||||
unsigned long flags;
|
||||
|
||||
/* Release all active buffers */
|
||||
spin_lock_irqsave(&dev->buf_lock, flags);
|
||||
while (!list_empty(&dev->avail_bufs)) {
|
||||
buf = list_first_entry(&dev->avail_bufs,
|
||||
struct stk1160_buffer, list);
|
||||
list_del(&buf->list);
|
||||
vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
|
||||
stk1160_info("buffer [%p/%d] aborted\n",
|
||||
buf, buf->vb.v4l2_buf.index);
|
||||
}
|
||||
/* It's important to clear current buffer */
|
||||
dev->isoc_ctl.buf = NULL;
|
||||
spin_unlock_irqrestore(&dev->buf_lock, flags);
|
||||
}
|
||||
|
||||
int stk1160_vb2_setup(struct stk1160 *dev)
|
||||
{
|
||||
int rc;
|
||||
struct vb2_queue *q;
|
||||
|
||||
q = &dev->vb_vidq;
|
||||
memset(q, 0, sizeof(dev->vb_vidq));
|
||||
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
||||
q->io_modes = VB2_READ | VB2_MMAP | VB2_USERPTR;
|
||||
q->drv_priv = dev;
|
||||
q->buf_struct_size = sizeof(struct stk1160_buffer);
|
||||
q->ops = &stk1160_video_qops;
|
||||
q->mem_ops = &vb2_vmalloc_memops;
|
||||
|
||||
rc = vb2_queue_init(q);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
|
||||
/* initialize video dma queue */
|
||||
INIT_LIST_HEAD(&dev->avail_bufs);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int stk1160_video_register(struct stk1160 *dev)
|
||||
{
|
||||
int rc;
|
||||
|
||||
/* Initialize video_device with a template structure */
|
||||
dev->vdev = v4l_template;
|
||||
dev->vdev.debug = vidioc_debug;
|
||||
dev->vdev.queue = &dev->vb_vidq;
|
||||
|
||||
/*
|
||||
* Provide mutexes for v4l2 core and for videobuf2 queue.
|
||||
* It will be used to protect *only* v4l2 ioctls.
|
||||
*/
|
||||
dev->vdev.lock = &dev->v4l_lock;
|
||||
dev->vdev.queue->lock = &dev->vb_queue_lock;
|
||||
|
||||
/* This will be used to set video_device parent */
|
||||
dev->vdev.v4l2_dev = &dev->v4l2_dev;
|
||||
set_bit(V4L2_FL_USE_FH_PRIO, &dev->vdev.flags);
|
||||
|
||||
/* NTSC is default */
|
||||
dev->norm = V4L2_STD_NTSC_M;
|
||||
dev->width = 720;
|
||||
dev->height = 480;
|
||||
|
||||
/* set default format */
|
||||
dev->fmt = &format[0];
|
||||
stk1160_set_std(dev);
|
||||
|
||||
v4l2_device_call_all(&dev->v4l2_dev, 0, core, s_std,
|
||||
dev->norm);
|
||||
|
||||
video_set_drvdata(&dev->vdev, dev);
|
||||
rc = video_register_device(&dev->vdev, VFL_TYPE_GRABBER, -1);
|
||||
if (rc < 0) {
|
||||
stk1160_err("video_register_device failed (%d)\n", rc);
|
||||
return rc;
|
||||
}
|
||||
|
||||
v4l2_info(&dev->v4l2_dev, "V4L2 device registered as %s\n",
|
||||
video_device_node_name(&dev->vdev));
|
||||
|
||||
return 0;
|
||||
}
|
||||
Reference in New Issue
Block a user