# CONFIG_VIDEO_FIXED_MINOR_RANGES is not set
CONFIG_VIDEO_HELPER_CHIPS_AUTO=y
# CONFIG_VIDEO_VIVI is not set
-CONFIG_VIDEO_SVC=y
+CONFIG_VIDEO_SVVD=y
# CONFIG_VIDEO_CPIA is not set
# CONFIG_VIDEO_CPIA2 is not set
# CONFIG_VIDEO_STRADIS is not set
Say Y here if you want to test video apps or debug V4L devices.
In doubt, say N.
-config VIDEO_SVC
- tristate "Samsung Virtual Video Driver"
+config VIDEO_SVVD
+ tristate "S-core Virtual Video Driver"
depends on VIDEO_DEV && VIDEO_V4L2 && !SPARC32 && !SPARC64
select VIDEOBUF_VMALLOC
default n
---help---
- Enables a Samsung Virtual Camera driver. This device shows a test
+ Enables a S-core Virtual Video driver. This device shows a test
video(YUV420), as a real device would generate by using V4L2 api.
And it supports overlay driver.
Say Y here if you want to test video apps or debug V4L devices.
obj-$(CONFIG_VIDEO_CX18) += cx18/
obj-$(CONFIG_VIDEO_VIVI) += vivi.o
-obj-$(CONFIG_VIDEO_SVC) += svc.o
+obj-$(CONFIG_VIDEO_SVVD) += svvd.o
obj-$(CONFIG_VIDEO_CX23885) += cx23885/
obj-$(CONFIG_VIDEO_OMAP2) += omap2cam.o
+++ /dev/null
-/*
- * Virtual Video driver - This code emulates a real video device with v4l2 api
- *
- * Copyright (c) 2006 by:
- * Mauro Carvalho Chehab <mchehab--a.t--infradead.org>
- * Ted Walther <ted--a.t--enumera.com>
- * John Sokol <sokol--a.t--videotechnology.com>
- * http://v4l.videotechnology.com/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the BSD Licence, GNU General Public License
- * as published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version
- */
-#include <linux/module.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/pci.h>
-#include <linux/random.h>
-#include <linux/version.h>
-#include <linux/mutex.h>
-#include <linux/videodev2.h>
-#include <linux/dma-mapping.h>
-#include <linux/interrupt.h>
-#include <linux/kthread.h>
-#include <linux/highmem.h>
-#include <linux/freezer.h>
-#include <media/videobuf-vmalloc.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ioctl.h>
-#include "font.h"
-
-#define VIVI_MODULE_NAME "vivi"
-
-/* Wake up at about 30 fps */
-#define WAKE_NUMERATOR 30
-#define WAKE_DENOMINATOR 1001
-#define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */
-
-#define VIVI_MAJOR_VERSION 0
-#define VIVI_MINOR_VERSION 6
-#define VIVI_RELEASE 0
-#define VIVI_VERSION \
- KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE)
-
-MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board");
-MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol");
-MODULE_LICENSE("Dual BSD/GPL");
-
-static unsigned video_nr = -1;
-module_param(video_nr, uint, 0644);
-MODULE_PARM_DESC(video_nr, "videoX start number, -1 is autodetect");
-
-static unsigned n_devs = 1;
-module_param(n_devs, uint, 0644);
-MODULE_PARM_DESC(n_devs, "number of video devices to create");
-
-static unsigned debug;
-module_param(debug, uint, 0644);
-MODULE_PARM_DESC(debug, "activates debug info");
-
-static unsigned int vid_limit = 16;
-module_param(vid_limit, uint, 0644);
-MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
-
-
-/* supported controls */
-static struct v4l2_queryctrl vivi_qctrl[] = {
- {
- .id = V4L2_CID_AUDIO_VOLUME,
- .name = "Volume",
- .minimum = 0,
- .maximum = 65535,
- .step = 65535/100,
- .default_value = 65535,
- .flags = V4L2_CTRL_FLAG_SLIDER,
- .type = V4L2_CTRL_TYPE_INTEGER,
- }, {
- .id = V4L2_CID_BRIGHTNESS,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Brightness",
- .minimum = 0,
- .maximum = 255,
- .step = 1,
- .default_value = 127,
- .flags = V4L2_CTRL_FLAG_SLIDER,
- }, {
- .id = V4L2_CID_CONTRAST,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Contrast",
- .minimum = 0,
- .maximum = 255,
- .step = 0x1,
- .default_value = 0x10,
- .flags = V4L2_CTRL_FLAG_SLIDER,
- }, {
- .id = V4L2_CID_SATURATION,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Saturation",
- .minimum = 0,
- .maximum = 255,
- .step = 0x1,
- .default_value = 127,
- .flags = V4L2_CTRL_FLAG_SLIDER,
- }, {
- .id = V4L2_CID_HUE,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Hue",
- .minimum = -128,
- .maximum = 127,
- .step = 0x1,
- .default_value = 0,
- .flags = V4L2_CTRL_FLAG_SLIDER,
- }
-};
-
-#define dprintk(dev, level, fmt, arg...) \
- v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ## arg)
-
-/* ------------------------------------------------------------------
- Basic structures
- ------------------------------------------------------------------*/
-
-struct vivi_fmt {
- char *name;
- u32 fourcc; /* v4l2 format id */
- int depth;
-};
-
-static struct vivi_fmt formats[] = {
- {
- .name = "4:2:2, packed, YUYV",
- .fourcc = V4L2_PIX_FMT_YUYV,
- .depth = 16,
- },
- {
- .name = "4:2:2, packed, UYVY",
- .fourcc = V4L2_PIX_FMT_UYVY,
- .depth = 16,
- },
- {
- .name = "RGB565 (LE)",
- .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
- .depth = 16,
- },
- {
- .name = "RGB565 (BE)",
- .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
- .depth = 16,
- },
- {
- .name = "RGB555 (LE)",
- .fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
- .depth = 16,
- },
- {
- .name = "RGB555 (BE)",
- .fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
- .depth = 16,
- },
-};
-
-static struct vivi_fmt *get_format(struct v4l2_format *f)
-{
- struct vivi_fmt *fmt;
- unsigned int k;
-
- for (k = 0; k < ARRAY_SIZE(formats); k++) {
- fmt = &formats[k];
- if (fmt->fourcc == f->fmt.pix.pixelformat)
- break;
- }
-
- if (k == ARRAY_SIZE(formats))
- return NULL;
-
- return &formats[k];
-}
-
-struct sg_to_addr {
- int pos;
- struct scatterlist *sg;
-};
-
-/* buffer for one video frame */
-struct vivi_buffer {
- /* common v4l buffer stuff -- must be first */
- struct videobuf_buffer vb;
-
- struct vivi_fmt *fmt;
-};
-
-struct vivi_dmaqueue {
- struct list_head active;
-
- /* thread for generating video stream*/
- struct task_struct *kthread;
- wait_queue_head_t wq;
- /* Counters to control fps rate */
- int frame;
- int ini_jiffies;
-};
-
-static LIST_HEAD(vivi_devlist);
-
-struct vivi_dev {
- struct list_head vivi_devlist;
- struct v4l2_device v4l2_dev;
-
- spinlock_t slock;
- struct mutex mutex;
-
- int users;
-
- /* various device info */
- struct video_device *vfd;
-
- struct vivi_dmaqueue vidq;
-
- /* Several counters */
- int h, m, s, ms;
- unsigned long jiffies;
- char timestr[13];
-
- int mv_count; /* Controls bars movement */
-
- /* Input Number */
- int input;
-
- /* Control 'registers' */
- int qctl_regs[ARRAY_SIZE(vivi_qctrl)];
-};
-
-struct vivi_fh {
- struct vivi_dev *dev;
-
- /* video capture */
- struct vivi_fmt *fmt;
- unsigned int width, height;
- struct videobuf_queue vb_vidq;
-
- enum v4l2_buf_type type;
- unsigned char bars[8][3];
- int input; /* Input Number on bars */
-};
-
-/* ------------------------------------------------------------------
- DMA and thread functions
- ------------------------------------------------------------------*/
-
-/* Bars and Colors should match positions */
-
-enum colors {
- WHITE,
- AMBAR,
- CYAN,
- GREEN,
- MAGENTA,
- RED,
- BLUE,
- BLACK,
-};
-
- /* R G B */
-#define COLOR_WHITE {204, 204, 204}
-#define COLOR_AMBAR {208, 208, 0}
-#define COLOR_CIAN { 0, 206, 206}
-#define COLOR_GREEN { 0, 239, 0}
-#define COLOR_MAGENTA {239, 0, 239}
-#define COLOR_RED {205, 0, 0}
-#define COLOR_BLUE { 0, 0, 255}
-#define COLOR_BLACK { 0, 0, 0}
-
-struct bar_std {
- u8 bar[8][3];
-};
-
-/* Maximum number of bars are 10 - otherwise, the input print code
- should be modified */
-static struct bar_std bars[] = {
- { /* Standard ITU-R color bar sequence */
- {
- COLOR_WHITE,
- COLOR_AMBAR,
- COLOR_CIAN,
- COLOR_GREEN,
- COLOR_MAGENTA,
- COLOR_RED,
- COLOR_BLUE,
- COLOR_BLACK,
- }
- }, {
- {
- COLOR_WHITE,
- COLOR_AMBAR,
- COLOR_BLACK,
- COLOR_WHITE,
- COLOR_AMBAR,
- COLOR_BLACK,
- COLOR_WHITE,
- COLOR_AMBAR,
- }
- }, {
- {
- COLOR_WHITE,
- COLOR_CIAN,
- COLOR_BLACK,
- COLOR_WHITE,
- COLOR_CIAN,
- COLOR_BLACK,
- COLOR_WHITE,
- COLOR_CIAN,
- }
- }, {
- {
- COLOR_WHITE,
- COLOR_GREEN,
- COLOR_BLACK,
- COLOR_WHITE,
- COLOR_GREEN,
- COLOR_BLACK,
- COLOR_WHITE,
- COLOR_GREEN,
- }
- },
-};
-
-#define NUM_INPUTS ARRAY_SIZE(bars)
-
-#define TO_Y(r, g, b) \
- (((16829 * r + 33039 * g + 6416 * b + 32768) >> 16) + 16)
-/* RGB to V(Cr) Color transform */
-#define TO_V(r, g, b) \
- (((28784 * r - 24103 * g - 4681 * b + 32768) >> 16) + 128)
-/* RGB to U(Cb) Color transform */
-#define TO_U(r, g, b) \
- (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128)
-
-/* precalculate color bar values to speed up rendering */
-static void precalculate_bars(struct vivi_fh *fh)
-{
- struct vivi_dev *dev = fh->dev;
- unsigned char r, g, b;
- int k, is_yuv;
-
- fh->input = dev->input;
-
- for (k = 0; k < 8; k++) {
- r = bars[fh->input].bar[k][0];
- g = bars[fh->input].bar[k][1];
- b = bars[fh->input].bar[k][2];
- is_yuv = 0;
-
- switch (fh->fmt->fourcc) {
- case V4L2_PIX_FMT_YUYV:
- case V4L2_PIX_FMT_UYVY:
- is_yuv = 1;
- break;
- case V4L2_PIX_FMT_RGB565:
- case V4L2_PIX_FMT_RGB565X:
- r >>= 3;
- g >>= 2;
- b >>= 3;
- break;
- case V4L2_PIX_FMT_RGB555:
- case V4L2_PIX_FMT_RGB555X:
- r >>= 3;
- g >>= 3;
- b >>= 3;
- break;
- }
-
- if (is_yuv) {
- fh->bars[k][0] = TO_Y(r, g, b); /* Luma */
- fh->bars[k][1] = TO_U(r, g, b); /* Cb */
- fh->bars[k][2] = TO_V(r, g, b); /* Cr */
- } else {
- fh->bars[k][0] = r;
- fh->bars[k][1] = g;
- fh->bars[k][2] = b;
- }
- }
-
-}
-
-#define TSTAMP_MIN_Y 24
-#define TSTAMP_MAX_Y (TSTAMP_MIN_Y + 15)
-#define TSTAMP_INPUT_X 10
-#define TSTAMP_MIN_X (54 + TSTAMP_INPUT_X)
-
-static void gen_twopix(struct vivi_fh *fh, unsigned char *buf, int colorpos)
-{
- unsigned char r_y, g_u, b_v;
- unsigned char *p;
- int color;
-
- r_y = fh->bars[colorpos][0]; /* R or precalculated Y */
- g_u = fh->bars[colorpos][1]; /* G or precalculated U */
- b_v = fh->bars[colorpos][2]; /* B or precalculated V */
-
- for (color = 0; color < 4; color++) {
- p = buf + color;
-
- switch (fh->fmt->fourcc) {
- case V4L2_PIX_FMT_YUYV:
- switch (color) {
- case 0:
- case 2:
- *p = r_y;
- break;
- case 1:
- *p = g_u;
- break;
- case 3:
- *p = b_v;
- break;
- }
- break;
- case V4L2_PIX_FMT_UYVY:
- switch (color) {
- case 1:
- case 3:
- *p = r_y;
- break;
- case 0:
- *p = g_u;
- break;
- case 2:
- *p = b_v;
- break;
- }
- break;
- case V4L2_PIX_FMT_RGB565:
- switch (color) {
- case 0:
- case 2:
- *p = (g_u << 5) | b_v;
- break;
- case 1:
- case 3:
- *p = (r_y << 3) | (g_u >> 3);
- break;
- }
- break;
- case V4L2_PIX_FMT_RGB565X:
- switch (color) {
- case 0:
- case 2:
- *p = (r_y << 3) | (g_u >> 3);
- break;
- case 1:
- case 3:
- *p = (g_u << 5) | b_v;
- break;
- }
- break;
- case V4L2_PIX_FMT_RGB555:
- switch (color) {
- case 0:
- case 2:
- *p = (g_u << 5) | b_v;
- break;
- case 1:
- case 3:
- *p = (r_y << 2) | (g_u >> 3);
- break;
- }
- break;
- case V4L2_PIX_FMT_RGB555X:
- switch (color) {
- case 0:
- case 2:
- *p = (r_y << 2) | (g_u >> 3);
- break;
- case 1:
- case 3:
- *p = (g_u << 5) | b_v;
- break;
- }
- break;
- }
- }
-}
-
-static void gen_line(struct vivi_fh *fh, char *basep, int inipos, int wmax,
- int hmax, int line, int count, char *timestr)
-{
- int w, i, j;
- int pos = inipos;
- char *s;
- u8 chr;
-
- /* We will just duplicate the second pixel at the packet */
- wmax /= 2;
-
- /* Generate a standard color bar pattern */
- for (w = 0; w < wmax; w++) {
- int colorpos = ((w + count) * 8/(wmax + 1)) % 8;
-
- gen_twopix(fh, basep + pos, colorpos);
- pos += 4; /* only 16 bpp supported for now */
- }
-
- /* Prints input entry number */
-
- /* Checks if it is possible to input number */
- if (TSTAMP_MAX_Y >= hmax)
- goto end;
-
- if (TSTAMP_INPUT_X + strlen(timestr) >= wmax)
- goto end;
-
- if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) {
- chr = rom8x16_bits[fh->input * 16 + line - TSTAMP_MIN_Y];
- pos = TSTAMP_INPUT_X;
- for (i = 0; i < 7; i++) {
- /* Draw white font on black background */
- if (chr & 1 << (7 - i))
- gen_twopix(fh, basep + pos, WHITE);
- else
- gen_twopix(fh, basep + pos, BLACK);
- pos += 2;
- }
- }
-
- /* Checks if it is possible to show timestamp */
- if (TSTAMP_MIN_X + strlen(timestr) >= wmax)
- goto end;
-
- /* Print stream time */
- if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) {
- j = TSTAMP_MIN_X;
- for (s = timestr; *s; s++) {
- chr = rom8x16_bits[(*s-0x30)*16+line-TSTAMP_MIN_Y];
- for (i = 0; i < 7; i++) {
- pos = inipos + j * 2;
- /* Draw white font on black background */
- if (chr & 1 << (7 - i))
- gen_twopix(fh, basep + pos, WHITE);
- else
- gen_twopix(fh, basep + pos, BLACK);
- j++;
- }
- }
- }
-
-end:
- return;
-}
-
-static void vivi_fillbuff(struct vivi_fh *fh, struct vivi_buffer *buf)
-{
- struct vivi_dev *dev = fh->dev;
- int h , pos = 0;
- int hmax = buf->vb.height;
- int wmax = buf->vb.width;
- struct timeval ts;
- char *tmpbuf;
- void *vbuf = videobuf_to_vmalloc(&buf->vb);
-
- if (!vbuf)
- return;
-
- tmpbuf = kmalloc(wmax * 2, GFP_ATOMIC);
- if (!tmpbuf)
- return;
-
- for (h = 0; h < hmax; h++) {
- gen_line(fh, tmpbuf, 0, wmax, hmax, h, dev->mv_count,
- dev->timestr);
- memcpy(vbuf + pos, tmpbuf, wmax * 2);
- pos += wmax*2;
- }
-
- dev->mv_count++;
-
- kfree(tmpbuf);
-
- /* Updates stream time */
-
- dev->ms += jiffies_to_msecs(jiffies-dev->jiffies);
- dev->jiffies = jiffies;
- if (dev->ms >= 1000) {
- dev->ms -= 1000;
- dev->s++;
- if (dev->s >= 60) {
- dev->s -= 60;
- dev->m++;
- if (dev->m > 60) {
- dev->m -= 60;
- dev->h++;
- if (dev->h > 24)
- dev->h -= 24;
- }
- }
- }
- sprintf(dev->timestr, "%02d:%02d:%02d:%03d",
- dev->h, dev->m, dev->s, dev->ms);
-
- dprintk(dev, 2, "vivifill at %s: Buffer 0x%08lx size= %d\n",
- dev->timestr, (unsigned long)tmpbuf, pos);
-
- /* Advice that buffer was filled */
- buf->vb.field_count++;
- do_gettimeofday(&ts);
- buf->vb.ts = ts;
- buf->vb.state = VIDEOBUF_DONE;
-}
-
-static void vivi_thread_tick(struct vivi_fh *fh)
-{
- struct vivi_buffer *buf;
- struct vivi_dev *dev = fh->dev;
- struct vivi_dmaqueue *dma_q = &dev->vidq;
-
- unsigned long flags = 0;
-
- dprintk(dev, 1, "Thread tick\n");
-
- spin_lock_irqsave(&dev->slock, flags);
- if (list_empty(&dma_q->active)) {
- dprintk(dev, 1, "No active queue to serve\n");
- goto unlock;
- }
-
- buf = list_entry(dma_q->active.next,
- struct vivi_buffer, vb.queue);
-
- /* Nobody is waiting on this buffer, return */
- if (!waitqueue_active(&buf->vb.done))
- goto unlock;
-
- list_del(&buf->vb.queue);
-
- do_gettimeofday(&buf->vb.ts);
-
- /* Fill buffer */
- vivi_fillbuff(fh, buf);
- dprintk(dev, 1, "filled buffer %p\n", buf);
-
- wake_up(&buf->vb.done);
- dprintk(dev, 2, "[%p/%d] wakeup\n", buf, buf->vb. i);
-unlock:
- spin_unlock_irqrestore(&dev->slock, flags);
- return;
-}
-
-#define frames_to_ms(frames) \
- ((frames * WAKE_NUMERATOR * 1000) / WAKE_DENOMINATOR)
-
-static void vivi_sleep(struct vivi_fh *fh)
-{
- struct vivi_dev *dev = fh->dev;
- struct vivi_dmaqueue *dma_q = &dev->vidq;
- int timeout;
- DECLARE_WAITQUEUE(wait, current);
-
- dprintk(dev, 1, "%s dma_q=0x%08lx\n", __func__,
- (unsigned long)dma_q);
-
- add_wait_queue(&dma_q->wq, &wait);
- if (kthread_should_stop())
- goto stop_task;
-
- /* Calculate time to wake up */
- timeout = msecs_to_jiffies(frames_to_ms(1));
-
- vivi_thread_tick(fh);
-
- schedule_timeout_interruptible(timeout);
-
-stop_task:
- remove_wait_queue(&dma_q->wq, &wait);
- try_to_freeze();
-}
-
-static int vivi_thread(void *data)
-{
- struct vivi_fh *fh = data;
- struct vivi_dev *dev = fh->dev;
-
- dprintk(dev, 1, "thread started\n");
-
- set_freezable();
-
- for (;;) {
- vivi_sleep(fh);
-
- if (kthread_should_stop())
- break;
- }
- dprintk(dev, 1, "thread: exit\n");
- return 0;
-}
-
-static int vivi_start_thread(struct vivi_fh *fh)
-{
- struct vivi_dev *dev = fh->dev;
- struct vivi_dmaqueue *dma_q = &dev->vidq;
-
- dma_q->frame = 0;
- dma_q->ini_jiffies = jiffies;
-
- dprintk(dev, 1, "%s\n", __func__);
-
- dma_q->kthread = kthread_run(vivi_thread, fh, "vivi");
-
- if (IS_ERR(dma_q->kthread)) {
- v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n");
- return PTR_ERR(dma_q->kthread);
- }
- /* Wakes thread */
- wake_up_interruptible(&dma_q->wq);
-
- dprintk(dev, 1, "returning from %s\n", __func__);
- return 0;
-}
-
-static void vivi_stop_thread(struct vivi_dmaqueue *dma_q)
-{
- struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq);
-
- dprintk(dev, 1, "%s\n", __func__);
- /* shutdown control thread */
- if (dma_q->kthread) {
- kthread_stop(dma_q->kthread);
- dma_q->kthread = NULL;
- }
-}
-
-/* ------------------------------------------------------------------
- Videobuf operations
- ------------------------------------------------------------------*/
-static int
-buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
-{
- struct vivi_fh *fh = vq->priv_data;
- struct vivi_dev *dev = fh->dev;
-
- *size = fh->width*fh->height*2;
-
- if (0 == *count)
- *count = 32;
-
- while (*size * *count > vid_limit * 1024 * 1024)
- (*count)--;
-
- dprintk(dev, 1, "%s, count=%d, size=%d\n", __func__,
- *count, *size);
-
- return 0;
-}
-
-static void free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf)
-{
- struct vivi_fh *fh = vq->priv_data;
- struct vivi_dev *dev = fh->dev;
-
- dprintk(dev, 1, "%s, state: %i\n", __func__, buf->vb.state);
-
- if (in_interrupt())
- BUG();
-
- videobuf_vmalloc_free(&buf->vb);
- dprintk(dev, 1, "free_buffer: freed\n");
- buf->vb.state = VIDEOBUF_NEEDS_INIT;
-}
-
-#define norm_maxw() 1024
-#define norm_maxh() 768
-static int
-buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
- enum v4l2_field field)
-{
- struct vivi_fh *fh = vq->priv_data;
- struct vivi_dev *dev = fh->dev;
- struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb);
- int rc;
-
- dprintk(dev, 1, "%s, field=%d\n", __func__, field);
-
- BUG_ON(NULL == fh->fmt);
-
- if (fh->width < 48 || fh->width > norm_maxw() ||
- fh->height < 32 || fh->height > norm_maxh())
- return -EINVAL;
-
- buf->vb.size = fh->width*fh->height*2;
- if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
- return -EINVAL;
-
- /* These properties only change when queue is idle, see s_fmt */
- buf->fmt = fh->fmt;
- buf->vb.width = fh->width;
- buf->vb.height = fh->height;
- buf->vb.field = field;
-
- precalculate_bars(fh);
-
- if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
- rc = videobuf_iolock(vq, &buf->vb, NULL);
- if (rc < 0)
- goto fail;
- }
-
- buf->vb.state = VIDEOBUF_PREPARED;
-
- return 0;
-
-fail:
- free_buffer(vq, buf);
- return rc;
-}
-
-static void
-buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
-{
- struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb);
- struct vivi_fh *fh = vq->priv_data;
- struct vivi_dev *dev = fh->dev;
- struct vivi_dmaqueue *vidq = &dev->vidq;
-
- dprintk(dev, 1, "%s\n", __func__);
-
- buf->vb.state = VIDEOBUF_QUEUED;
- list_add_tail(&buf->vb.queue, &vidq->active);
-}
-
-static void buffer_release(struct videobuf_queue *vq,
- struct videobuf_buffer *vb)
-{
- struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb);
- struct vivi_fh *fh = vq->priv_data;
- struct vivi_dev *dev = (struct vivi_dev *)fh->dev;
-
- dprintk(dev, 1, "%s\n", __func__);
-
- free_buffer(vq, buf);
-}
-
-static struct videobuf_queue_ops vivi_video_qops = {
- .buf_setup = buffer_setup,
- .buf_prepare = buffer_prepare,
- .buf_queue = buffer_queue,
- .buf_release = buffer_release,
-};
-
-/* ------------------------------------------------------------------
- IOCTL vidioc handling
- ------------------------------------------------------------------*/
-static int vidioc_querycap(struct file *file, void *priv,
- struct v4l2_capability *cap)
-{
- struct vivi_fh *fh = priv;
- struct vivi_dev *dev = fh->dev;
-
- strcpy(cap->driver, "vivi");
- strcpy(cap->card, "vivi");
- strlcpy(cap->bus_info, dev->v4l2_dev.name, sizeof(cap->bus_info));
- cap->version = VIVI_VERSION;
- cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
- V4L2_CAP_STREAMING |
- V4L2_CAP_READWRITE;
- return 0;
-}
-
-static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_fmtdesc *f)
-{
- struct vivi_fmt *fmt;
-
- if (f->index >= ARRAY_SIZE(formats))
- return -EINVAL;
-
- fmt = &formats[f->index];
-
- strlcpy(f->description, fmt->name, sizeof(f->description));
- f->pixelformat = fmt->fourcc;
- return 0;
-}
-
-static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *f)
-{
- struct vivi_fh *fh = priv;
-
- f->fmt.pix.width = fh->width;
- f->fmt.pix.height = fh->height;
- f->fmt.pix.field = fh->vb_vidq.field;
- f->fmt.pix.pixelformat = fh->fmt->fourcc;
- f->fmt.pix.bytesperline =
- (f->fmt.pix.width * fh->fmt->depth) >> 3;
- f->fmt.pix.sizeimage =
- f->fmt.pix.height * f->fmt.pix.bytesperline;
-
- return (0);
-}
-
-static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *f)
-{
- struct vivi_fh *fh = priv;
- struct vivi_dev *dev = fh->dev;
- struct vivi_fmt *fmt;
- enum v4l2_field field;
- unsigned int maxw, maxh;
-
- fmt = get_format(f);
- if (!fmt) {
- dprintk(dev, 1, "Fourcc format (0x%08x) invalid.\n",
- f->fmt.pix.pixelformat);
- return -EINVAL;
- }
-
- field = f->fmt.pix.field;
-
- if (field == V4L2_FIELD_ANY) {
- field = V4L2_FIELD_INTERLACED;
- } else if (V4L2_FIELD_INTERLACED != field) {
- dprintk(dev, 1, "Field type invalid.\n");
- return -EINVAL;
- }
-
- maxw = norm_maxw();
- maxh = norm_maxh();
-
- f->fmt.pix.field = field;
- v4l_bound_align_image(&f->fmt.pix.width, 48, maxw, 2,
- &f->fmt.pix.height, 32, maxh, 0, 0);
- f->fmt.pix.bytesperline =
- (f->fmt.pix.width * fmt->depth) >> 3;
- f->fmt.pix.sizeimage =
- f->fmt.pix.height * f->fmt.pix.bytesperline;
-
- return 0;
-}
-
-/*FIXME: This seems to be generic enough to be at videodev2 */
-static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
- struct v4l2_format *f)
-{
- struct vivi_fh *fh = priv;
- struct videobuf_queue *q = &fh->vb_vidq;
-
- int ret = vidioc_try_fmt_vid_cap(file, fh, f);
- if (ret < 0)
- return ret;
-
- mutex_lock(&q->vb_lock);
-
- if (videobuf_queue_is_busy(&fh->vb_vidq)) {
- dprintk(fh->dev, 1, "%s queue busy\n", __func__);
- ret = -EBUSY;
- goto out;
- }
-
- fh->fmt = get_format(f);
- fh->width = f->fmt.pix.width;
- fh->height = f->fmt.pix.height;
- fh->vb_vidq.field = f->fmt.pix.field;
- fh->type = f->type;
-
- ret = 0;
-out:
- mutex_unlock(&q->vb_lock);
-
- return ret;
-}
-
-static int vidioc_reqbufs(struct file *file, void *priv,
- struct v4l2_requestbuffers *p)
-{
- struct vivi_fh *fh = priv;
-
- return (videobuf_reqbufs(&fh->vb_vidq, p));
-}
-
-static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p)
-{
- struct vivi_fh *fh = priv;
-
- return (videobuf_querybuf(&fh->vb_vidq, p));
-}
-
-static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
-{
- struct vivi_fh *fh = priv;
-
- return (videobuf_qbuf(&fh->vb_vidq, p));
-}
-
-static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
-{
- struct vivi_fh *fh = priv;
-
- return (videobuf_dqbuf(&fh->vb_vidq, p,
- file->f_flags & O_NONBLOCK));
-}
-
-#ifdef CONFIG_VIDEO_V4L1_COMPAT
-static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
-{
- struct vivi_fh *fh = priv;
-
- return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
-}
-#endif
-
-static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
-{
- struct vivi_fh *fh = priv;
-
- if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
- if (i != fh->type)
- return -EINVAL;
-
- return videobuf_streamon(&fh->vb_vidq);
-}
-
-static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
-{
- struct vivi_fh *fh = priv;
-
- if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
- if (i != fh->type)
- return -EINVAL;
-
- return videobuf_streamoff(&fh->vb_vidq);
-}
-
-static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i)
-{
- return 0;
-}
-
-/* only one input in this sample driver */
-static int vidioc_enum_input(struct file *file, void *priv,
- struct v4l2_input *inp)
-{
- if (inp->index >= NUM_INPUTS)
- return -EINVAL;
-
- inp->type = V4L2_INPUT_TYPE_CAMERA;
- inp->std = V4L2_STD_525_60;
- sprintf(inp->name, "Camera %u", inp->index);
-
- return (0);
-}
-
-static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
-{
- struct vivi_fh *fh = priv;
- struct vivi_dev *dev = fh->dev;
-
- *i = dev->input;
-
- return (0);
-}
-static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
-{
- struct vivi_fh *fh = priv;
- struct vivi_dev *dev = fh->dev;
-
- if (i >= NUM_INPUTS)
- return -EINVAL;
-
- dev->input = i;
- precalculate_bars(fh);
-
- return (0);
-}
-
- /* --- controls ---------------------------------------------- */
-static int vidioc_queryctrl(struct file *file, void *priv,
- struct v4l2_queryctrl *qc)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++)
- if (qc->id && qc->id == vivi_qctrl[i].id) {
- memcpy(qc, &(vivi_qctrl[i]),
- sizeof(*qc));
- return (0);
- }
-
- return -EINVAL;
-}
-
-static int vidioc_g_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct vivi_fh *fh = priv;
- struct vivi_dev *dev = fh->dev;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++)
- if (ctrl->id == vivi_qctrl[i].id) {
- ctrl->value = dev->qctl_regs[i];
- return 0;
- }
-
- return -EINVAL;
-}
-static int vidioc_s_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct vivi_fh *fh = priv;
- struct vivi_dev *dev = fh->dev;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++)
- if (ctrl->id == vivi_qctrl[i].id) {
- if (ctrl->value < vivi_qctrl[i].minimum ||
- ctrl->value > vivi_qctrl[i].maximum) {
- return -ERANGE;
- }
- dev->qctl_regs[i] = ctrl->value;
- return 0;
- }
- return -EINVAL;
-}
-
-/* ------------------------------------------------------------------
- File operations for the device
- ------------------------------------------------------------------*/
-
-static int vivi_open(struct file *file)
-{
- struct vivi_dev *dev = video_drvdata(file);
- struct vivi_fh *fh = NULL;
- int retval = 0;
-
- mutex_lock(&dev->mutex);
- dev->users++;
-
- if (dev->users > 1) {
- dev->users--;
- mutex_unlock(&dev->mutex);
- return -EBUSY;
- }
-
- dprintk(dev, 1, "open /dev/video%d type=%s users=%d\n", dev->vfd->num,
- v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users);
-
- /* allocate + initialize per filehandle data */
- fh = kzalloc(sizeof(*fh), GFP_KERNEL);
- if (NULL == fh) {
- dev->users--;
- retval = -ENOMEM;
- }
- mutex_unlock(&dev->mutex);
-
- if (retval)
- return retval;
-
- file->private_data = fh;
- fh->dev = dev;
-
- fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- fh->fmt = &formats[0];
- fh->width = 640;
- fh->height = 480;
-
- /* Resets frame counters */
- dev->h = 0;
- dev->m = 0;
- dev->s = 0;
- dev->ms = 0;
- dev->mv_count = 0;
- dev->jiffies = jiffies;
- sprintf(dev->timestr, "%02d:%02d:%02d:%03d",
- dev->h, dev->m, dev->s, dev->ms);
-
- videobuf_queue_vmalloc_init(&fh->vb_vidq, &vivi_video_qops,
- NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED,
- sizeof(struct vivi_buffer), fh);
-
- vivi_start_thread(fh);
-
- return 0;
-}
-
-static ssize_t
-vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
-{
- struct vivi_fh *fh = file->private_data;
-
- if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
- return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0,
- file->f_flags & O_NONBLOCK);
- }
- return 0;
-}
-
-static unsigned int
-vivi_poll(struct file *file, struct poll_table_struct *wait)
-{
- struct vivi_fh *fh = file->private_data;
- struct vivi_dev *dev = fh->dev;
- struct videobuf_queue *q = &fh->vb_vidq;
-
- dprintk(dev, 1, "%s\n", __func__);
-
- if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
- return POLLERR;
-
- return videobuf_poll_stream(file, q, wait);
-}
-
-static int vivi_close(struct file *file)
-{
- struct vivi_fh *fh = file->private_data;
- struct vivi_dev *dev = fh->dev;
- struct vivi_dmaqueue *vidq = &dev->vidq;
-
- int minor = video_devdata(file)->minor;
-
- vivi_stop_thread(vidq);
- videobuf_stop(&fh->vb_vidq);
- videobuf_mmap_free(&fh->vb_vidq);
-
- kfree(fh);
-
- mutex_lock(&dev->mutex);
- dev->users--;
- mutex_unlock(&dev->mutex);
-
- dprintk(dev, 1, "close called (minor=%d, users=%d)\n",
- minor, dev->users);
-
- return 0;
-}
-
-static int vivi_mmap(struct file *file, struct vm_area_struct *vma)
-{
- struct vivi_fh *fh = file->private_data;
- struct vivi_dev *dev = fh->dev;
- int ret;
-
- dprintk(dev, 1, "mmap called, vma=0x%08lx\n", (unsigned long)vma);
-
- ret = videobuf_mmap_mapper(&fh->vb_vidq, vma);
-
- dprintk(dev, 1, "vma start=0x%08lx, size=%ld, ret=%d\n",
- (unsigned long)vma->vm_start,
- (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
- ret);
-
- return ret;
-}
-
-static const struct v4l2_file_operations vivi_fops = {
- .owner = THIS_MODULE,
- .open = vivi_open,
- .release = vivi_close,
- .read = vivi_read,
- .poll = vivi_poll,
- .ioctl = video_ioctl2, /* V4L2 ioctl handler */
- .mmap = vivi_mmap,
-};
-
-static const struct v4l2_ioctl_ops vivi_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_reqbufs = vidioc_reqbufs,
- .vidioc_querybuf = vidioc_querybuf,
- .vidioc_qbuf = vidioc_qbuf,
- .vidioc_dqbuf = vidioc_dqbuf,
- .vidioc_s_std = vidioc_s_std,
- .vidioc_enum_input = vidioc_enum_input,
- .vidioc_g_input = vidioc_g_input,
- .vidioc_s_input = vidioc_s_input,
- .vidioc_queryctrl = vidioc_queryctrl,
- .vidioc_g_ctrl = vidioc_g_ctrl,
- .vidioc_s_ctrl = vidioc_s_ctrl,
- .vidioc_streamon = vidioc_streamon,
- .vidioc_streamoff = vidioc_streamoff,
-#ifdef CONFIG_VIDEO_V4L1_COMPAT
- .vidiocgmbuf = vidiocgmbuf,
-#endif
-};
-
-static struct video_device vivi_template = {
- .name = "vivi",
- .fops = &vivi_fops,
- .ioctl_ops = &vivi_ioctl_ops,
- .minor = -1,
- .release = video_device_release,
-
- .tvnorms = V4L2_STD_525_60,
- .current_norm = V4L2_STD_NTSC_M,
-};
-
-/* -----------------------------------------------------------------
- Initialization and module stuff
- ------------------------------------------------------------------*/
-
-static int vivi_release(void)
-{
- struct vivi_dev *dev;
- struct list_head *list;
-
- while (!list_empty(&vivi_devlist)) {
- list = vivi_devlist.next;
- list_del(list);
- dev = list_entry(list, struct vivi_dev, vivi_devlist);
-
- v4l2_info(&dev->v4l2_dev, "unregistering /dev/video%d\n",
- dev->vfd->num);
- video_unregister_device(dev->vfd);
- v4l2_device_unregister(&dev->v4l2_dev);
- kfree(dev);
- }
-
- return 0;
-}
-
-static int __init vivi_create_instance(int inst)
-{
- struct vivi_dev *dev;
- struct video_device *vfd;
- int ret, i;
-
- dev = kzalloc(sizeof(*dev), GFP_KERNEL);
- if (!dev)
- return -ENOMEM;
-
- snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name),
- "%s-%03d", VIVI_MODULE_NAME, inst);
- ret = v4l2_device_register(NULL, &dev->v4l2_dev);
- if (ret)
- goto free_dev;
-
- /* init video dma queues */
- INIT_LIST_HEAD(&dev->vidq.active);
- init_waitqueue_head(&dev->vidq.wq);
-
- /* initialize locks */
- spin_lock_init(&dev->slock);
- mutex_init(&dev->mutex);
-
- ret = -ENOMEM;
- vfd = video_device_alloc();
- if (!vfd)
- goto unreg_dev;
-
- *vfd = vivi_template;
- vfd->debug = debug;
-
- ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr);
- if (ret < 0)
- goto rel_vdev;
-
- video_set_drvdata(vfd, dev);
-
- /* Set all controls to their default value. */
- for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++)
- dev->qctl_regs[i] = vivi_qctrl[i].default_value;
-
- /* Now that everything is fine, let's add it to device list */
- list_add_tail(&dev->vivi_devlist, &vivi_devlist);
-
- snprintf(vfd->name, sizeof(vfd->name), "%s (%i)",
- vivi_template.name, vfd->num);
-
- if (video_nr >= 0)
- video_nr++;
-
- dev->vfd = vfd;
- v4l2_info(&dev->v4l2_dev, "V4L2 device registered as /dev/video%d\n",
- vfd->num);
- return 0;
-
-rel_vdev:
- video_device_release(vfd);
-unreg_dev:
- v4l2_device_unregister(&dev->v4l2_dev);
-free_dev:
- kfree(dev);
- return ret;
-}
-
-/* This routine allocates from 1 to n_devs virtual drivers.
-
- The real maximum number of virtual drivers will depend on how many drivers
- will succeed. This is limited to the maximum number of devices that
- videodev supports, which is equal to VIDEO_NUM_DEVICES.
- */
-static int __init vivi_init(void)
-{
- int ret = 0, i;
-
- if (n_devs <= 0)
- n_devs = 1;
-
- for (i = 0; i < n_devs; i++) {
- ret = vivi_create_instance(i);
- if (ret) {
- /* If some instantiations succeeded, keep driver */
- if (i)
- ret = 0;
- break;
- }
- }
-
- if (ret < 0) {
- printk(KERN_INFO "Error %d while loading vivi driver\n", ret);
- return ret;
- }
-
- printk(KERN_INFO "Video Technology Magazine Virtual Video "
- "Capture Board ver %u.%u.%u successfully loaded.\n",
- (VIVI_VERSION >> 16) & 0xFF, (VIVI_VERSION >> 8) & 0xFF,
- VIVI_VERSION & 0xFF);
-
- /* n_devs will reflect the actual number of allocated devices */
- n_devs = i;
-
- return ret;
-}
-
-static void __exit vivi_exit(void)
-{
- vivi_release();
-}
-
-module_init(vivi_init);
-module_exit(vivi_exit);
--- /dev/null
+/*
+ * Virtual Video driver - This code emulates a real video device with v4l2 api
+ *
+ * Copyright (C) 2011 S-core
+ * Copyright (c) 2006 by:
+ * Mauro Carvalho Chehab <mchehab--a.t--infradead.org>
+ * Ted Walther <ted--a.t--enumera.com>
+ * John Sokol <sokol--a.t--videotechnology.com>
+ * http://v4l.videotechnology.com/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the BSD Licence, GNU General Public License
+ * as published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version
+ */
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/fs.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/pci.h>
+#include <linux/random.h>
+#include <linux/version.h>
+#include <linux/mutex.h>
+#include <linux/videodev2.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/kthread.h>
+#include <linux/highmem.h>
+#include <linux/freezer.h>
+#include <media/videobuf-vmalloc.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include "font.h"
+
+#define VIVI_MODULE_NAME "vivi"
+
+/* Wake up at about 30 fps */
+#define WAKE_NUMERATOR 30
+#define WAKE_DENOMINATOR 1001
+#define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */
+
+#define VIVI_MAJOR_VERSION 0
+#define VIVI_MINOR_VERSION 6
+#define VIVI_RELEASE 0
+#define VIVI_VERSION \
+ KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE)
+
+MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board");
+MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol");
+MODULE_LICENSE("Dual BSD/GPL");
+
+static unsigned video_nr = -1;
+module_param(video_nr, uint, 0644);
+MODULE_PARM_DESC(video_nr, "videoX start number, -1 is autodetect");
+
+static unsigned n_devs = 1;
+module_param(n_devs, uint, 0644);
+MODULE_PARM_DESC(n_devs, "number of video devices to create");
+
+static unsigned debug;
+module_param(debug, uint, 0644);
+MODULE_PARM_DESC(debug, "activates debug info");
+
+static unsigned int vid_limit = 16;
+module_param(vid_limit, uint, 0644);
+MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
+
+
+/* supported controls */
+static struct v4l2_queryctrl vivi_qctrl[] = {
+ {
+ .id = V4L2_CID_AUDIO_VOLUME,
+ .name = "Volume",
+ .minimum = 0,
+ .maximum = 65535,
+ .step = 65535/100,
+ .default_value = 65535,
+ .flags = V4L2_CTRL_FLAG_SLIDER,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ }, {
+ .id = V4L2_CID_BRIGHTNESS,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Brightness",
+ .minimum = 0,
+ .maximum = 255,
+ .step = 1,
+ .default_value = 127,
+ .flags = V4L2_CTRL_FLAG_SLIDER,
+ }, {
+ .id = V4L2_CID_CONTRAST,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Contrast",
+ .minimum = 0,
+ .maximum = 255,
+ .step = 0x1,
+ .default_value = 0x10,
+ .flags = V4L2_CTRL_FLAG_SLIDER,
+ }, {
+ .id = V4L2_CID_SATURATION,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Saturation",
+ .minimum = 0,
+ .maximum = 255,
+ .step = 0x1,
+ .default_value = 127,
+ .flags = V4L2_CTRL_FLAG_SLIDER,
+ }, {
+ .id = V4L2_CID_HUE,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ .name = "Hue",
+ .minimum = -128,
+ .maximum = 127,
+ .step = 0x1,
+ .default_value = 0,
+ .flags = V4L2_CTRL_FLAG_SLIDER,
+ }
+};
+
+#define dprintk(dev, level, fmt, arg...) \
+ v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ## arg)
+
+/* ------------------------------------------------------------------
+ Basic structures
+ ------------------------------------------------------------------*/
+
+struct vivi_fmt {
+ char *name;
+ u32 fourcc; /* v4l2 format id */
+ int depth;
+};
+
+static struct vivi_fmt formats[] = {
+ {
+ .name = "4:2:2, packed, YUYV",
+ .fourcc = V4L2_PIX_FMT_YUYV,
+ .depth = 16,
+ },
+ {
+ .name = "4:2:2, packed, UYVY",
+ .fourcc = V4L2_PIX_FMT_UYVY,
+ .depth = 16,
+ },
+ {
+ .name = "RGB565 (LE)",
+ .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
+ .depth = 16,
+ },
+ {
+ .name = "RGB565 (BE)",
+ .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
+ .depth = 16,
+ },
+ {
+ .name = "RGB555 (LE)",
+ .fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
+ .depth = 16,
+ },
+ {
+ .name = "RGB555 (BE)",
+ .fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
+ .depth = 16,
+ },
+};
+
+static struct vivi_fmt *get_format(struct v4l2_format *f)
+{
+ struct vivi_fmt *fmt;
+ unsigned int k;
+
+ for (k = 0; k < ARRAY_SIZE(formats); k++) {
+ fmt = &formats[k];
+ if (fmt->fourcc == f->fmt.pix.pixelformat)
+ break;
+ }
+
+ if (k == ARRAY_SIZE(formats))
+ return NULL;
+
+ return &formats[k];
+}
+
+struct sg_to_addr {
+ int pos;
+ struct scatterlist *sg;
+};
+
+/* buffer for one video frame */
+struct vivi_buffer {
+ /* common v4l buffer stuff -- must be first */
+ struct videobuf_buffer vb;
+
+ struct vivi_fmt *fmt;
+};
+
+struct vivi_dmaqueue {
+ struct list_head active;
+
+ /* thread for generating video stream*/
+ struct task_struct *kthread;
+ wait_queue_head_t wq;
+ /* Counters to control fps rate */
+ int frame;
+ int ini_jiffies;
+};
+
+static LIST_HEAD(vivi_devlist);
+
+struct vivi_dev {
+ struct list_head vivi_devlist;
+ struct v4l2_device v4l2_dev;
+
+ spinlock_t slock;
+ struct mutex mutex;
+
+ int users;
+
+ /* various device info */
+ struct video_device *vfd;
+
+ struct vivi_dmaqueue vidq;
+
+ /* Several counters */
+ int h, m, s, ms;
+ unsigned long jiffies;
+ char timestr[13];
+
+ int mv_count; /* Controls bars movement */
+
+ /* Input Number */
+ int input;
+
+ /* Control 'registers' */
+ int qctl_regs[ARRAY_SIZE(vivi_qctrl)];
+};
+
+struct vivi_fh {
+ struct vivi_dev *dev;
+
+ /* video capture */
+ struct vivi_fmt *fmt;
+ unsigned int width, height;
+ struct videobuf_queue vb_vidq;
+
+ enum v4l2_buf_type type;
+ unsigned char bars[8][3];
+ int input; /* Input Number on bars */
+};
+
+/* ------------------------------------------------------------------
+ DMA and thread functions
+ ------------------------------------------------------------------*/
+
+/* Bars and Colors should match positions */
+
+enum colors {
+ WHITE,
+ AMBAR,
+ CYAN,
+ GREEN,
+ MAGENTA,
+ RED,
+ BLUE,
+ BLACK,
+};
+
+ /* R G B */
+#define COLOR_WHITE {204, 204, 204}
+#define COLOR_AMBAR {208, 208, 0}
+#define COLOR_CIAN { 0, 206, 206}
+#define COLOR_GREEN { 0, 239, 0}
+#define COLOR_MAGENTA {239, 0, 239}
+#define COLOR_RED {205, 0, 0}
+#define COLOR_BLUE { 0, 0, 255}
+#define COLOR_BLACK { 0, 0, 0}
+
+struct bar_std {
+ u8 bar[8][3];
+};
+
+/* Maximum number of bars are 10 - otherwise, the input print code
+ should be modified */
+static struct bar_std bars[] = {
+ { /* Standard ITU-R color bar sequence */
+ {
+ COLOR_WHITE,
+ COLOR_AMBAR,
+ COLOR_CIAN,
+ COLOR_GREEN,
+ COLOR_MAGENTA,
+ COLOR_RED,
+ COLOR_BLUE,
+ COLOR_BLACK,
+ }
+ }, {
+ {
+ COLOR_WHITE,
+ COLOR_AMBAR,
+ COLOR_BLACK,
+ COLOR_WHITE,
+ COLOR_AMBAR,
+ COLOR_BLACK,
+ COLOR_WHITE,
+ COLOR_AMBAR,
+ }
+ }, {
+ {
+ COLOR_WHITE,
+ COLOR_CIAN,
+ COLOR_BLACK,
+ COLOR_WHITE,
+ COLOR_CIAN,
+ COLOR_BLACK,
+ COLOR_WHITE,
+ COLOR_CIAN,
+ }
+ }, {
+ {
+ COLOR_WHITE,
+ COLOR_GREEN,
+ COLOR_BLACK,
+ COLOR_WHITE,
+ COLOR_GREEN,
+ COLOR_BLACK,
+ COLOR_WHITE,
+ COLOR_GREEN,
+ }
+ },
+};
+
+#define NUM_INPUTS ARRAY_SIZE(bars)
+
+#define TO_Y(r, g, b) \
+ (((16829 * r + 33039 * g + 6416 * b + 32768) >> 16) + 16)
+/* RGB to V(Cr) Color transform */
+#define TO_V(r, g, b) \
+ (((28784 * r - 24103 * g - 4681 * b + 32768) >> 16) + 128)
+/* RGB to U(Cb) Color transform */
+#define TO_U(r, g, b) \
+ (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128)
+
+/* precalculate color bar values to speed up rendering */
+static void precalculate_bars(struct vivi_fh *fh)
+{
+ struct vivi_dev *dev = fh->dev;
+ unsigned char r, g, b;
+ int k, is_yuv;
+
+ fh->input = dev->input;
+
+ for (k = 0; k < 8; k++) {
+ r = bars[fh->input].bar[k][0];
+ g = bars[fh->input].bar[k][1];
+ b = bars[fh->input].bar[k][2];
+ is_yuv = 0;
+
+ switch (fh->fmt->fourcc) {
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_UYVY:
+ is_yuv = 1;
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_RGB565X:
+ r >>= 3;
+ g >>= 2;
+ b >>= 3;
+ break;
+ case V4L2_PIX_FMT_RGB555:
+ case V4L2_PIX_FMT_RGB555X:
+ r >>= 3;
+ g >>= 3;
+ b >>= 3;
+ break;
+ }
+
+ if (is_yuv) {
+ fh->bars[k][0] = TO_Y(r, g, b); /* Luma */
+ fh->bars[k][1] = TO_U(r, g, b); /* Cb */
+ fh->bars[k][2] = TO_V(r, g, b); /* Cr */
+ } else {
+ fh->bars[k][0] = r;
+ fh->bars[k][1] = g;
+ fh->bars[k][2] = b;
+ }
+ }
+
+}
+
+#define TSTAMP_MIN_Y 24
+#define TSTAMP_MAX_Y (TSTAMP_MIN_Y + 15)
+#define TSTAMP_INPUT_X 10
+#define TSTAMP_MIN_X (54 + TSTAMP_INPUT_X)
+
+static void gen_twopix(struct vivi_fh *fh, unsigned char *buf, int colorpos)
+{
+ unsigned char r_y, g_u, b_v;
+ unsigned char *p;
+ int color;
+
+ r_y = fh->bars[colorpos][0]; /* R or precalculated Y */
+ g_u = fh->bars[colorpos][1]; /* G or precalculated U */
+ b_v = fh->bars[colorpos][2]; /* B or precalculated V */
+
+ for (color = 0; color < 4; color++) {
+ p = buf + color;
+
+ switch (fh->fmt->fourcc) {
+ case V4L2_PIX_FMT_YUYV:
+ switch (color) {
+ case 0:
+ case 2:
+ *p = r_y;
+ break;
+ case 1:
+ *p = g_u;
+ break;
+ case 3:
+ *p = b_v;
+ break;
+ }
+ break;
+ case V4L2_PIX_FMT_UYVY:
+ switch (color) {
+ case 1:
+ case 3:
+ *p = r_y;
+ break;
+ case 0:
+ *p = g_u;
+ break;
+ case 2:
+ *p = b_v;
+ break;
+ }
+ break;
+ case V4L2_PIX_FMT_RGB565:
+ switch (color) {
+ case 0:
+ case 2:
+ *p = (g_u << 5) | b_v;
+ break;
+ case 1:
+ case 3:
+ *p = (r_y << 3) | (g_u >> 3);
+ break;
+ }
+ break;
+ case V4L2_PIX_FMT_RGB565X:
+ switch (color) {
+ case 0:
+ case 2:
+ *p = (r_y << 3) | (g_u >> 3);
+ break;
+ case 1:
+ case 3:
+ *p = (g_u << 5) | b_v;
+ break;
+ }
+ break;
+ case V4L2_PIX_FMT_RGB555:
+ switch (color) {
+ case 0:
+ case 2:
+ *p = (g_u << 5) | b_v;
+ break;
+ case 1:
+ case 3:
+ *p = (r_y << 2) | (g_u >> 3);
+ break;
+ }
+ break;
+ case V4L2_PIX_FMT_RGB555X:
+ switch (color) {
+ case 0:
+ case 2:
+ *p = (r_y << 2) | (g_u >> 3);
+ break;
+ case 1:
+ case 3:
+ *p = (g_u << 5) | b_v;
+ break;
+ }
+ break;
+ }
+ }
+}
+
+static void gen_line(struct vivi_fh *fh, char *basep, int inipos, int wmax,
+ int hmax, int line, int count, char *timestr)
+{
+ int w, i, j;
+ int pos = inipos;
+ char *s;
+ u8 chr;
+
+ /* We will just duplicate the second pixel at the packet */
+ wmax /= 2;
+
+ /* Generate a standard color bar pattern */
+ for (w = 0; w < wmax; w++) {
+ int colorpos = ((w + count) * 8/(wmax + 1)) % 8;
+
+ gen_twopix(fh, basep + pos, colorpos);
+ pos += 4; /* only 16 bpp supported for now */
+ }
+
+ /* Prints input entry number */
+
+ /* Checks if it is possible to input number */
+ if (TSTAMP_MAX_Y >= hmax)
+ goto end;
+
+ if (TSTAMP_INPUT_X + strlen(timestr) >= wmax)
+ goto end;
+
+ if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) {
+ chr = rom8x16_bits[fh->input * 16 + line - TSTAMP_MIN_Y];
+ pos = TSTAMP_INPUT_X;
+ for (i = 0; i < 7; i++) {
+ /* Draw white font on black background */
+ if (chr & 1 << (7 - i))
+ gen_twopix(fh, basep + pos, WHITE);
+ else
+ gen_twopix(fh, basep + pos, BLACK);
+ pos += 2;
+ }
+ }
+
+ /* Checks if it is possible to show timestamp */
+ if (TSTAMP_MIN_X + strlen(timestr) >= wmax)
+ goto end;
+
+ /* Print stream time */
+ if (line >= TSTAMP_MIN_Y && line <= TSTAMP_MAX_Y) {
+ j = TSTAMP_MIN_X;
+ for (s = timestr; *s; s++) {
+ chr = rom8x16_bits[(*s-0x30)*16+line-TSTAMP_MIN_Y];
+ for (i = 0; i < 7; i++) {
+ pos = inipos + j * 2;
+ /* Draw white font on black background */
+ if (chr & 1 << (7 - i))
+ gen_twopix(fh, basep + pos, WHITE);
+ else
+ gen_twopix(fh, basep + pos, BLACK);
+ j++;
+ }
+ }
+ }
+
+end:
+ return;
+}
+
+static void vivi_fillbuff(struct vivi_fh *fh, struct vivi_buffer *buf)
+{
+ struct vivi_dev *dev = fh->dev;
+ int h , pos = 0;
+ int hmax = buf->vb.height;
+ int wmax = buf->vb.width;
+ struct timeval ts;
+ char *tmpbuf;
+ void *vbuf = videobuf_to_vmalloc(&buf->vb);
+
+ if (!vbuf)
+ return;
+
+ tmpbuf = kmalloc(wmax * 2, GFP_ATOMIC);
+ if (!tmpbuf)
+ return;
+
+ for (h = 0; h < hmax; h++) {
+ gen_line(fh, tmpbuf, 0, wmax, hmax, h, dev->mv_count,
+ dev->timestr);
+ memcpy(vbuf + pos, tmpbuf, wmax * 2);
+ pos += wmax*2;
+ }
+
+ dev->mv_count++;
+
+ kfree(tmpbuf);
+
+ /* Updates stream time */
+
+ dev->ms += jiffies_to_msecs(jiffies-dev->jiffies);
+ dev->jiffies = jiffies;
+ if (dev->ms >= 1000) {
+ dev->ms -= 1000;
+ dev->s++;
+ if (dev->s >= 60) {
+ dev->s -= 60;
+ dev->m++;
+ if (dev->m > 60) {
+ dev->m -= 60;
+ dev->h++;
+ if (dev->h > 24)
+ dev->h -= 24;
+ }
+ }
+ }
+ sprintf(dev->timestr, "%02d:%02d:%02d:%03d",
+ dev->h, dev->m, dev->s, dev->ms);
+
+ dprintk(dev, 2, "vivifill at %s: Buffer 0x%08lx size= %d\n",
+ dev->timestr, (unsigned long)tmpbuf, pos);
+
+ /* Advice that buffer was filled */
+ buf->vb.field_count++;
+ do_gettimeofday(&ts);
+ buf->vb.ts = ts;
+ buf->vb.state = VIDEOBUF_DONE;
+}
+
+static void vivi_thread_tick(struct vivi_fh *fh)
+{
+ struct vivi_buffer *buf;
+ struct vivi_dev *dev = fh->dev;
+ struct vivi_dmaqueue *dma_q = &dev->vidq;
+
+ unsigned long flags = 0;
+
+ dprintk(dev, 1, "Thread tick\n");
+
+ spin_lock_irqsave(&dev->slock, flags);
+ if (list_empty(&dma_q->active)) {
+ dprintk(dev, 1, "No active queue to serve\n");
+ goto unlock;
+ }
+
+ buf = list_entry(dma_q->active.next,
+ struct vivi_buffer, vb.queue);
+
+ /* Nobody is waiting on this buffer, return */
+ if (!waitqueue_active(&buf->vb.done))
+ goto unlock;
+
+ list_del(&buf->vb.queue);
+
+ do_gettimeofday(&buf->vb.ts);
+
+ /* Fill buffer */
+ vivi_fillbuff(fh, buf);
+ dprintk(dev, 1, "filled buffer %p\n", buf);
+
+ wake_up(&buf->vb.done);
+ dprintk(dev, 2, "[%p/%d] wakeup\n", buf, buf->vb. i);
+unlock:
+ spin_unlock_irqrestore(&dev->slock, flags);
+ return;
+}
+
+#define frames_to_ms(frames) \
+ ((frames * WAKE_NUMERATOR * 1000) / WAKE_DENOMINATOR)
+
+static void vivi_sleep(struct vivi_fh *fh)
+{
+ struct vivi_dev *dev = fh->dev;
+ struct vivi_dmaqueue *dma_q = &dev->vidq;
+ int timeout;
+ DECLARE_WAITQUEUE(wait, current);
+
+ dprintk(dev, 1, "%s dma_q=0x%08lx\n", __func__,
+ (unsigned long)dma_q);
+
+ add_wait_queue(&dma_q->wq, &wait);
+ if (kthread_should_stop())
+ goto stop_task;
+
+ /* Calculate time to wake up */
+ timeout = msecs_to_jiffies(frames_to_ms(1));
+
+ vivi_thread_tick(fh);
+
+ schedule_timeout_interruptible(timeout);
+
+stop_task:
+ remove_wait_queue(&dma_q->wq, &wait);
+ try_to_freeze();
+}
+
+static int vivi_thread(void *data)
+{
+ struct vivi_fh *fh = data;
+ struct vivi_dev *dev = fh->dev;
+
+ dprintk(dev, 1, "thread started\n");
+
+ set_freezable();
+
+ for (;;) {
+ vivi_sleep(fh);
+
+ if (kthread_should_stop())
+ break;
+ }
+ dprintk(dev, 1, "thread: exit\n");
+ return 0;
+}
+
+static int vivi_start_thread(struct vivi_fh *fh)
+{
+ struct vivi_dev *dev = fh->dev;
+ struct vivi_dmaqueue *dma_q = &dev->vidq;
+
+ dma_q->frame = 0;
+ dma_q->ini_jiffies = jiffies;
+
+ dprintk(dev, 1, "%s\n", __func__);
+
+ dma_q->kthread = kthread_run(vivi_thread, fh, "vivi");
+
+ if (IS_ERR(dma_q->kthread)) {
+ v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n");
+ return PTR_ERR(dma_q->kthread);
+ }
+ /* Wakes thread */
+ wake_up_interruptible(&dma_q->wq);
+
+ dprintk(dev, 1, "returning from %s\n", __func__);
+ return 0;
+}
+
+static void vivi_stop_thread(struct vivi_dmaqueue *dma_q)
+{
+ struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq);
+
+ dprintk(dev, 1, "%s\n", __func__);
+ /* shutdown control thread */
+ if (dma_q->kthread) {
+ kthread_stop(dma_q->kthread);
+ dma_q->kthread = NULL;
+ }
+}
+
+/* ------------------------------------------------------------------
+ Videobuf operations
+ ------------------------------------------------------------------*/
+static int
+buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
+{
+ struct vivi_fh *fh = vq->priv_data;
+ struct vivi_dev *dev = fh->dev;
+
+ *size = fh->width*fh->height*2;
+
+ if (0 == *count)
+ *count = 32;
+
+ while (*size * *count > vid_limit * 1024 * 1024)
+ (*count)--;
+
+ dprintk(dev, 1, "%s, count=%d, size=%d\n", __func__,
+ *count, *size);
+
+ return 0;
+}
+
+static void free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf)
+{
+ struct vivi_fh *fh = vq->priv_data;
+ struct vivi_dev *dev = fh->dev;
+
+ dprintk(dev, 1, "%s, state: %i\n", __func__, buf->vb.state);
+
+ if (in_interrupt())
+ BUG();
+
+ videobuf_vmalloc_free(&buf->vb);
+ dprintk(dev, 1, "free_buffer: freed\n");
+ buf->vb.state = VIDEOBUF_NEEDS_INIT;
+}
+
+#define norm_maxw() 1024
+#define norm_maxh() 768
+static int
+buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
+ enum v4l2_field field)
+{
+ struct vivi_fh *fh = vq->priv_data;
+ struct vivi_dev *dev = fh->dev;
+ struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb);
+ int rc;
+
+ dprintk(dev, 1, "%s, field=%d\n", __func__, field);
+
+ BUG_ON(NULL == fh->fmt);
+
+ if (fh->width < 48 || fh->width > norm_maxw() ||
+ fh->height < 32 || fh->height > norm_maxh())
+ return -EINVAL;
+
+ buf->vb.size = fh->width*fh->height*2;
+ if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
+ return -EINVAL;
+
+ /* These properties only change when queue is idle, see s_fmt */
+ buf->fmt = fh->fmt;
+ buf->vb.width = fh->width;
+ buf->vb.height = fh->height;
+ buf->vb.field = field;
+
+ precalculate_bars(fh);
+
+ if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
+ rc = videobuf_iolock(vq, &buf->vb, NULL);
+ if (rc < 0)
+ goto fail;
+ }
+
+ buf->vb.state = VIDEOBUF_PREPARED;
+
+ return 0;
+
+fail:
+ free_buffer(vq, buf);
+ return rc;
+}
+
+static void
+buffer_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
+{
+ struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb);
+ struct vivi_fh *fh = vq->priv_data;
+ struct vivi_dev *dev = fh->dev;
+ struct vivi_dmaqueue *vidq = &dev->vidq;
+
+ dprintk(dev, 1, "%s\n", __func__);
+
+ buf->vb.state = VIDEOBUF_QUEUED;
+ list_add_tail(&buf->vb.queue, &vidq->active);
+}
+
+static void buffer_release(struct videobuf_queue *vq,
+ struct videobuf_buffer *vb)
+{
+ struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb);
+ struct vivi_fh *fh = vq->priv_data;
+ struct vivi_dev *dev = (struct vivi_dev *)fh->dev;
+
+ dprintk(dev, 1, "%s\n", __func__);
+
+ free_buffer(vq, buf);
+}
+
+static struct videobuf_queue_ops vivi_video_qops = {
+ .buf_setup = buffer_setup,
+ .buf_prepare = buffer_prepare,
+ .buf_queue = buffer_queue,
+ .buf_release = buffer_release,
+};
+
+/* ------------------------------------------------------------------
+ IOCTL vidioc handling
+ ------------------------------------------------------------------*/
+static int vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct vivi_fh *fh = priv;
+ struct vivi_dev *dev = fh->dev;
+
+ strcpy(cap->driver, "vivi");
+ strcpy(cap->card, "vivi");
+ strlcpy(cap->bus_info, dev->v4l2_dev.name, sizeof(cap->bus_info));
+ cap->version = VIVI_VERSION;
+ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
+ V4L2_CAP_STREAMING |
+ V4L2_CAP_READWRITE;
+ return 0;
+}
+
+static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct vivi_fmt *fmt;
+
+ if (f->index >= ARRAY_SIZE(formats))
+ return -EINVAL;
+
+ fmt = &formats[f->index];
+
+ strlcpy(f->description, fmt->name, sizeof(f->description));
+ f->pixelformat = fmt->fourcc;
+ return 0;
+}
+
+static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct vivi_fh *fh = priv;
+
+ f->fmt.pix.width = fh->width;
+ f->fmt.pix.height = fh->height;
+ f->fmt.pix.field = fh->vb_vidq.field;
+ f->fmt.pix.pixelformat = fh->fmt->fourcc;
+ f->fmt.pix.bytesperline =
+ (f->fmt.pix.width * fh->fmt->depth) >> 3;
+ f->fmt.pix.sizeimage =
+ f->fmt.pix.height * f->fmt.pix.bytesperline;
+
+ return (0);
+}
+
+static int vidioc_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct vivi_fh *fh = priv;
+ struct vivi_dev *dev = fh->dev;
+ struct vivi_fmt *fmt;
+ enum v4l2_field field;
+ unsigned int maxw, maxh;
+
+ fmt = get_format(f);
+ if (!fmt) {
+ dprintk(dev, 1, "Fourcc format (0x%08x) invalid.\n",
+ f->fmt.pix.pixelformat);
+ return -EINVAL;
+ }
+
+ field = f->fmt.pix.field;
+
+ if (field == V4L2_FIELD_ANY) {
+ field = V4L2_FIELD_INTERLACED;
+ } else if (V4L2_FIELD_INTERLACED != field) {
+ dprintk(dev, 1, "Field type invalid.\n");
+ return -EINVAL;
+ }
+
+ maxw = norm_maxw();
+ maxh = norm_maxh();
+
+ f->fmt.pix.field = field;
+ v4l_bound_align_image(&f->fmt.pix.width, 48, maxw, 2,
+ &f->fmt.pix.height, 32, maxh, 0, 0);
+ f->fmt.pix.bytesperline =
+ (f->fmt.pix.width * fmt->depth) >> 3;
+ f->fmt.pix.sizeimage =
+ f->fmt.pix.height * f->fmt.pix.bytesperline;
+
+ return 0;
+}
+
+/*FIXME: This seems to be generic enough to be at videodev2 */
+static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct vivi_fh *fh = priv;
+ struct videobuf_queue *q = &fh->vb_vidq;
+
+ int ret = vidioc_try_fmt_vid_cap(file, fh, f);
+ if (ret < 0)
+ return ret;
+
+ mutex_lock(&q->vb_lock);
+
+ if (videobuf_queue_is_busy(&fh->vb_vidq)) {
+ dprintk(fh->dev, 1, "%s queue busy\n", __func__);
+ ret = -EBUSY;
+ goto out;
+ }
+
+ fh->fmt = get_format(f);
+ fh->width = f->fmt.pix.width;
+ fh->height = f->fmt.pix.height;
+ fh->vb_vidq.field = f->fmt.pix.field;
+ fh->type = f->type;
+
+ ret = 0;
+out:
+ mutex_unlock(&q->vb_lock);
+
+ return ret;
+}
+
+static int vidioc_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *p)
+{
+ struct vivi_fh *fh = priv;
+
+ return (videobuf_reqbufs(&fh->vb_vidq, p));
+}
+
+static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p)
+{
+ struct vivi_fh *fh = priv;
+
+ return (videobuf_querybuf(&fh->vb_vidq, p));
+}
+
+static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
+{
+ struct vivi_fh *fh = priv;
+
+ return (videobuf_qbuf(&fh->vb_vidq, p));
+}
+
+static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
+{
+ struct vivi_fh *fh = priv;
+
+ return (videobuf_dqbuf(&fh->vb_vidq, p,
+ file->f_flags & O_NONBLOCK));
+}
+
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
+{
+ struct vivi_fh *fh = priv;
+
+ return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
+}
+#endif
+
+static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i)
+{
+ struct vivi_fh *fh = priv;
+
+ if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ if (i != fh->type)
+ return -EINVAL;
+
+ return videobuf_streamon(&fh->vb_vidq);
+}
+
+static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i)
+{
+ struct vivi_fh *fh = priv;
+
+ if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+ if (i != fh->type)
+ return -EINVAL;
+
+ return videobuf_streamoff(&fh->vb_vidq);
+}
+
+static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id *i)
+{
+ return 0;
+}
+
+/* only one input in this sample driver */
+static int vidioc_enum_input(struct file *file, void *priv,
+ struct v4l2_input *inp)
+{
+ if (inp->index >= NUM_INPUTS)
+ return -EINVAL;
+
+ inp->type = V4L2_INPUT_TYPE_CAMERA;
+ inp->std = V4L2_STD_525_60;
+ sprintf(inp->name, "Camera %u", inp->index);
+
+ return (0);
+}
+
+static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
+{
+ struct vivi_fh *fh = priv;
+ struct vivi_dev *dev = fh->dev;
+
+ *i = dev->input;
+
+ return (0);
+}
+static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
+{
+ struct vivi_fh *fh = priv;
+ struct vivi_dev *dev = fh->dev;
+
+ if (i >= NUM_INPUTS)
+ return -EINVAL;
+
+ dev->input = i;
+ precalculate_bars(fh);
+
+ return (0);
+}
+
+ /* --- controls ---------------------------------------------- */
+static int vidioc_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *qc)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++)
+ if (qc->id && qc->id == vivi_qctrl[i].id) {
+ memcpy(qc, &(vivi_qctrl[i]),
+ sizeof(*qc));
+ return (0);
+ }
+
+ return -EINVAL;
+}
+
+static int vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct vivi_fh *fh = priv;
+ struct vivi_dev *dev = fh->dev;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++)
+ if (ctrl->id == vivi_qctrl[i].id) {
+ ctrl->value = dev->qctl_regs[i];
+ return 0;
+ }
+
+ return -EINVAL;
+}
+static int vidioc_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ struct vivi_fh *fh = priv;
+ struct vivi_dev *dev = fh->dev;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++)
+ if (ctrl->id == vivi_qctrl[i].id) {
+ if (ctrl->value < vivi_qctrl[i].minimum ||
+ ctrl->value > vivi_qctrl[i].maximum) {
+ return -ERANGE;
+ }
+ dev->qctl_regs[i] = ctrl->value;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+/* ------------------------------------------------------------------
+ File operations for the device
+ ------------------------------------------------------------------*/
+
+static int vivi_open(struct file *file)
+{
+ struct vivi_dev *dev = video_drvdata(file);
+ struct vivi_fh *fh = NULL;
+ int retval = 0;
+
+ mutex_lock(&dev->mutex);
+ dev->users++;
+
+ if (dev->users > 1) {
+ dev->users--;
+ mutex_unlock(&dev->mutex);
+ return -EBUSY;
+ }
+
+ dprintk(dev, 1, "open /dev/video%d type=%s users=%d\n", dev->vfd->num,
+ v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users);
+
+ /* allocate + initialize per filehandle data */
+ fh = kzalloc(sizeof(*fh), GFP_KERNEL);
+ if (NULL == fh) {
+ dev->users--;
+ retval = -ENOMEM;
+ }
+ mutex_unlock(&dev->mutex);
+
+ if (retval)
+ return retval;
+
+ file->private_data = fh;
+ fh->dev = dev;
+
+ fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ fh->fmt = &formats[0];
+ fh->width = 640;
+ fh->height = 480;
+
+ /* Resets frame counters */
+ dev->h = 0;
+ dev->m = 0;
+ dev->s = 0;
+ dev->ms = 0;
+ dev->mv_count = 0;
+ dev->jiffies = jiffies;
+ sprintf(dev->timestr, "%02d:%02d:%02d:%03d",
+ dev->h, dev->m, dev->s, dev->ms);
+
+ videobuf_queue_vmalloc_init(&fh->vb_vidq, &vivi_video_qops,
+ NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED,
+ sizeof(struct vivi_buffer), fh);
+
+ vivi_start_thread(fh);
+
+ return 0;
+}
+
+static ssize_t
+vivi_read(struct file *file, char __user *data, size_t count, loff_t *ppos)
+{
+ struct vivi_fh *fh = file->private_data;
+
+ if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0,
+ file->f_flags & O_NONBLOCK);
+ }
+ return 0;
+}
+
+static unsigned int
+vivi_poll(struct file *file, struct poll_table_struct *wait)
+{
+ struct vivi_fh *fh = file->private_data;
+ struct vivi_dev *dev = fh->dev;
+ struct videobuf_queue *q = &fh->vb_vidq;
+
+ dprintk(dev, 1, "%s\n", __func__);
+
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
+ return POLLERR;
+
+ return videobuf_poll_stream(file, q, wait);
+}
+
+static int vivi_close(struct file *file)
+{
+ struct vivi_fh *fh = file->private_data;
+ struct vivi_dev *dev = fh->dev;
+ struct vivi_dmaqueue *vidq = &dev->vidq;
+
+ int minor = video_devdata(file)->minor;
+
+ vivi_stop_thread(vidq);
+ videobuf_stop(&fh->vb_vidq);
+ videobuf_mmap_free(&fh->vb_vidq);
+
+ kfree(fh);
+
+ mutex_lock(&dev->mutex);
+ dev->users--;
+ mutex_unlock(&dev->mutex);
+
+ dprintk(dev, 1, "close called (minor=%d, users=%d)\n",
+ minor, dev->users);
+
+ return 0;
+}
+
+static int vivi_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ struct vivi_fh *fh = file->private_data;
+ struct vivi_dev *dev = fh->dev;
+ int ret;
+
+ dprintk(dev, 1, "mmap called, vma=0x%08lx\n", (unsigned long)vma);
+
+ ret = videobuf_mmap_mapper(&fh->vb_vidq, vma);
+
+ dprintk(dev, 1, "vma start=0x%08lx, size=%ld, ret=%d\n",
+ (unsigned long)vma->vm_start,
+ (unsigned long)vma->vm_end-(unsigned long)vma->vm_start,
+ ret);
+
+ return ret;
+}
+
+static const struct v4l2_file_operations vivi_fops = {
+ .owner = THIS_MODULE,
+ .open = vivi_open,
+ .release = vivi_close,
+ .read = vivi_read,
+ .poll = vivi_poll,
+ .ioctl = video_ioctl2, /* V4L2 ioctl handler */
+ .mmap = vivi_mmap,
+};
+
+static const struct v4l2_ioctl_ops vivi_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_reqbufs = vidioc_reqbufs,
+ .vidioc_querybuf = vidioc_querybuf,
+ .vidioc_qbuf = vidioc_qbuf,
+ .vidioc_dqbuf = vidioc_dqbuf,
+ .vidioc_s_std = vidioc_s_std,
+ .vidioc_enum_input = vidioc_enum_input,
+ .vidioc_g_input = vidioc_g_input,
+ .vidioc_s_input = vidioc_s_input,
+ .vidioc_queryctrl = vidioc_queryctrl,
+ .vidioc_g_ctrl = vidioc_g_ctrl,
+ .vidioc_s_ctrl = vidioc_s_ctrl,
+ .vidioc_streamon = vidioc_streamon,
+ .vidioc_streamoff = vidioc_streamoff,
+#ifdef CONFIG_VIDEO_V4L1_COMPAT
+ .vidiocgmbuf = vidiocgmbuf,
+#endif
+};
+
+static struct video_device vivi_template = {
+ .name = "vivi",
+ .fops = &vivi_fops,
+ .ioctl_ops = &vivi_ioctl_ops,
+ .minor = -1,
+ .release = video_device_release,
+
+ .tvnorms = V4L2_STD_525_60,
+ .current_norm = V4L2_STD_NTSC_M,
+};
+
+/* -----------------------------------------------------------------
+ Initialization and module stuff
+ ------------------------------------------------------------------*/
+
+static int vivi_release(void)
+{
+ struct vivi_dev *dev;
+ struct list_head *list;
+
+ while (!list_empty(&vivi_devlist)) {
+ list = vivi_devlist.next;
+ list_del(list);
+ dev = list_entry(list, struct vivi_dev, vivi_devlist);
+
+ v4l2_info(&dev->v4l2_dev, "unregistering /dev/video%d\n",
+ dev->vfd->num);
+ video_unregister_device(dev->vfd);
+ v4l2_device_unregister(&dev->v4l2_dev);
+ kfree(dev);
+ }
+
+ return 0;
+}
+
+static int __init svvd_create_instance(int inst)
+{
+ struct vivi_dev *dev;
+ struct video_device *vfd;
+ int ret, i;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name),
+ "%s-%03d", VIVI_MODULE_NAME, inst);
+ ret = v4l2_device_register(NULL, &dev->v4l2_dev);
+ if (ret)
+ goto free_dev;
+
+ /* init video dma queues */
+ INIT_LIST_HEAD(&dev->vidq.active);
+ init_waitqueue_head(&dev->vidq.wq);
+
+ /* initialize locks */
+ spin_lock_init(&dev->slock);
+ mutex_init(&dev->mutex);
+
+ ret = -ENOMEM;
+ vfd = video_device_alloc();
+ if (!vfd)
+ goto unreg_dev;
+
+ *vfd = vivi_template;
+ vfd->debug = debug;
+
+ ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr);
+ if (ret < 0)
+ goto rel_vdev;
+
+ video_set_drvdata(vfd, dev);
+
+ /* Set all controls to their default value. */
+ for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++)
+ dev->qctl_regs[i] = vivi_qctrl[i].default_value;
+
+ /* Now that everything is fine, let's add it to device list */
+ list_add_tail(&dev->vivi_devlist, &vivi_devlist);
+
+ snprintf(vfd->name, sizeof(vfd->name), "%s (%i)",
+ vivi_template.name, vfd->num);
+
+ if (video_nr >= 0)
+ video_nr++;
+
+ dev->vfd = vfd;
+ v4l2_info(&dev->v4l2_dev, "V4L2 device registered as /dev/video%d\n",
+ vfd->num);
+ return 0;
+
+rel_vdev:
+ video_device_release(vfd);
+unreg_dev:
+ v4l2_device_unregister(&dev->v4l2_dev);
+free_dev:
+ kfree(dev);
+ return ret;
+}
+
+/* This routine allocates from 1 to n_devs virtual drivers.
+
+ The real maximum number of virtual drivers will depend on how many drivers
+ will succeed. This is limited to the maximum number of devices that
+ videodev supports, which is equal to VIDEO_NUM_DEVICES.
+ */
+static int __init svvd_init(void)
+{
+ int ret = 0, i;
+
+ if (n_devs <= 0)
+ n_devs = 1;
+
+ for (i = 0; i < n_devs; i++) {
+ ret = svvd_create_instance(i);
+ if (ret) {
+ /* If some instantiations succeeded, keep driver */
+ if (i)
+ ret = 0;
+ break;
+ }
+ }
+
+ if (ret < 0) {
+ printk(KERN_INFO "Error %d while loading vivi driver\n", ret);
+ return ret;
+ }
+
+ printk(KERN_INFO "Video Technology Magazine Virtual Video "
+ "Capture Board ver %u.%u.%u successfully loaded.\n",
+ (VIVI_VERSION >> 16) & 0xFF, (VIVI_VERSION >> 8) & 0xFF,
+ VIVI_VERSION & 0xFF);
+
+ /* n_devs will reflect the actual number of allocated devices */
+ n_devs = i;
+
+ return ret;
+}
+
+static void __exit svvd_exit(void)
+{
+ vivi_release();
+}
+
+module_init(svvd_init);
+module_exit(svvd_exit);
projects / sdk / emulator / emulator-kernel.git / commitdiff