#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>
#ifdef CONFIG_VIDEO_V4L1_COMPAT
#include <linux/videodev.h>
#endif
#include <linux/interrupt.h>
-#include <media/video-buf.h>
+#include <media/videobuf-vmalloc.h>
#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
#include <linux/kthread.h>
#include <linux/highmem.h>
#include <linux/freezer.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 */
-/* These timers are for 1 fps - used only for testing */
-//#define WAKE_DENOMINATOR 30 /* hack for testing purposes */
-//#define BUFFER_TIMEOUT msecs_to_jiffies(5000) /* 5 seconds */
-
#include "font.h"
#define VIVI_MAJOR_VERSION 0
-#define VIVI_MINOR_VERSION 4
+#define VIVI_MINOR_VERSION 5
#define VIVI_RELEASE 0
-#define VIVI_VERSION KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE)
+#define VIVI_VERSION \
+ KERNEL_VERSION(VIVI_MAJOR_VERSION, VIVI_MINOR_VERSION, VIVI_RELEASE)
/* Declare static vars that will be used as parameters */
static unsigned int vid_limit = 16; /* Video memory limit, in Mb */
-static struct video_device vivi; /* Video device */
static int video_nr = -1; /* /dev/videoN, -1 for autodetect */
+static int n_devs = 1; /* Number of virtual devices */
/* supported controls */
static struct v4l2_queryctrl vivi_qctrl[] = {
.default_value = 65535,
.flags = 0,
.type = V4L2_CTRL_TYPE_INTEGER,
- },{
+ }, {
.id = V4L2_CID_BRIGHTNESS,
.type = V4L2_CTRL_TYPE_INTEGER,
.name = "Brightness",
static int qctl_regs[ARRAY_SIZE(vivi_qctrl)];
-#define dprintk(level,fmt, arg...) \
+#define dprintk(dev, level, fmt, arg...) \
do { \
- if (vivi.debug >= (level)) \
+ if (dev->vfd->debug >= (level)) \
printk(KERN_DEBUG "vivi: " fmt , ## arg); \
} while (0)
int depth;
};
-static struct vivi_fmt format = {
- .name = "4:2:2, packed, YUYV",
- .fourcc = V4L2_PIX_FMT_YUYV,
- .depth = 16,
+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;
struct videobuf_buffer vb;
struct vivi_fmt *fmt;
-
- struct sg_to_addr *to_addr;
};
struct vivi_dmaqueue {
struct list_head active;
- struct list_head queued;
- struct timer_list timeout;
/* thread for generating video stream*/
struct task_struct *kthread;
struct vivi_dev {
struct list_head vivi_devlist;
- struct semaphore lock;
+ spinlock_t slock;
+ struct mutex mutex;
int users;
/* various device info */
- unsigned int resources;
- struct video_device vfd;
+ struct video_device *vfd;
struct vivi_dmaqueue vidq;
/* Several counters */
- int h,m,s,us,jiffies;
+ int h, m, s, ms;
+ unsigned long jiffies;
char timestr[13];
+
+ int mv_count; /* Controls bars movement */
};
struct vivi_fh {
/* video capture */
struct vivi_fmt *fmt;
- unsigned int width,height;
+ unsigned int width, height;
struct videobuf_queue vb_vidq;
enum v4l2_buf_type type;
+ unsigned char bars[8][3];
};
/* ------------------------------------------------------------------
GREEN,
MAGENTA,
RED,
- BLUE
+ BLUE,
+ BLACK,
};
static u8 bars[8][3] = {
/* R G B */
- {204,204,204}, /* white */
- {208,208, 0}, /* ambar */
- { 0,206,206}, /* cyan */
- { 0,239, 0}, /* green */
- {239, 0,239}, /* magenta */
- {205, 0, 0}, /* red */
- { 0, 0,255}, /* blue */
- { 0, 0, 0}
+ {204, 204, 204}, /* white */
+ {208, 208, 0}, /* ambar */
+ { 0, 206, 206}, /* cyan */
+ { 0, 239, 0}, /* green */
+ {239, 0, 239}, /* magenta */
+ {205, 0, 0}, /* red */
+ { 0, 0, 255}, /* blue */
+ { 0, 0, 0}, /* black */
};
-#define TO_Y(r,g,b) (((16829*r +33039*g +6416*b + 32768)>>16)+16)
+#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)
+#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)
+#define TO_U(r, g, b) \
+ (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128)
#define TSTAMP_MIN_Y 24
#define TSTAMP_MAX_Y TSTAMP_MIN_Y+15
#define TSTAMP_MIN_X 64
-static void prep_to_addr(struct sg_to_addr to_addr[],
- struct videobuf_buffer *vb)
+static void gen_twopix(struct vivi_fh *fh, unsigned char *buf, int colorpos)
{
- int i, pos=0;
+ unsigned char r_y, g_u, b_v;
+ unsigned char *p;
+ int color;
- for (i=0;i<vb->dma.nr_pages;i++) {
- to_addr[i].sg=&vb->dma.sglist[i];
- to_addr[i].pos=pos;
- pos += vb->dma.sglist[i].length;
- }
-}
-
-static int get_addr_pos(int pos, int pages, struct sg_to_addr to_addr[])
-{
- int p1=0,p2=pages-1,p3=pages/2;
+ 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 */
- /* Sanity test */
- BUG_ON (pos>=to_addr[p2].pos+to_addr[p2].sg->length);
+ for (color = 0; color < 4; color++) {
+ p = buf + color;
- while (p1+1<p2) {
- if (pos < to_addr[p3].pos) {
- p2=p3;
- } else {
- p1=p3;
+ 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;
}
- p3=(p1+p2)/2;
}
- if (pos >= to_addr[p2].pos)
- p1=p2;
-
- return (p1);
}
-static void gen_line(struct sg_to_addr to_addr[],int inipos,int pages,int wmax,
- int hmax, int line, char *timestr)
+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,pos=inipos,pgpos,oldpg,y;
- char *p,*s,*basep;
- struct page *pg;
- u8 chr,r,g,b,color;
- unsigned long flags;
- spinlock_t spinlock;
-
- spin_lock_init(&spinlock);
-
- /* Get first addr pointed to pixel position */
- oldpg=get_addr_pos(pos,pages,to_addr);
- pg=pfn_to_page(sg_dma_address(to_addr[oldpg].sg) >> PAGE_SHIFT);
- spin_lock_irqsave(&spinlock,flags);
- basep = kmap_atomic(pg, KM_BOUNCE_READ)+to_addr[oldpg].sg->offset;
+ int w, i, j;
+ int pos = inipos;
+ char *s;
+ u8 chr;
/* We will just duplicate the second pixel at the packet */
- wmax/=2;
+ wmax /= 2;
/* Generate a standard color bar pattern */
- for (w=0;w<wmax;w++) {
- r=bars[w*7/wmax][0];
- g=bars[w*7/wmax][1];
- b=bars[w*7/wmax][2];
-
- for (color=0;color<4;color++) {
- pgpos=get_addr_pos(pos,pages,to_addr);
- if (pgpos!=oldpg) {
- pg=pfn_to_page(sg_dma_address(to_addr[pgpos].sg) >> PAGE_SHIFT);
- kunmap_atomic(basep, KM_BOUNCE_READ);
- basep= kmap_atomic(pg, KM_BOUNCE_READ)+to_addr[pgpos].sg->offset;
- oldpg=pgpos;
- }
- p=basep+pos-to_addr[pgpos].pos;
+ for (w = 0; w < wmax; w++) {
+ int colorpos = ((w + count) * 8/(wmax + 1)) % 8;
- switch (color) {
- case 0:
- case 2:
- *p=TO_Y(r,g,b); /* Luminance */
- break;
- case 1:
- *p=TO_U(r,g,b); /* Cb */
- break;
- case 3:
- *p=TO_V(r,g,b); /* Cr */
- break;
- }
- pos++;
- }
+ gen_twopix(fh, basep + pos, colorpos);
+ pos += 4; /* only 16 bpp supported for now */
}
/* Checks if it is possible to show timestamp */
- if (TSTAMP_MAX_Y>=hmax)
+ if (TSTAMP_MAX_Y >= hmax)
goto end;
- if (TSTAMP_MIN_X+strlen(timestr)>=wmax)
+ 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++) {
- if (chr&1<<(7-i)) { /* Font color*/
- r=bars[BLUE][0];
- g=bars[BLUE][1];
- b=bars[BLUE][2];
- r=g=b=0;
- g=198;
- } else { /* Background color */
- r=bars[WHITE][0];
- g=bars[WHITE][1];
- b=bars[WHITE][2];
- r=g=b=0;
- }
-
- pos=inipos+j*2;
- for (color=0;color<4;color++) {
- pgpos=get_addr_pos(pos,pages,to_addr);
- if (pgpos!=oldpg) {
- pg=pfn_to_page(sg_dma_address(
- to_addr[pgpos].sg)
- >> PAGE_SHIFT);
- kunmap_atomic(basep,
- KM_BOUNCE_READ);
- basep= kmap_atomic(pg,
- KM_BOUNCE_READ)+
- to_addr[pgpos].sg->offset;
- oldpg=pgpos;
- }
- p=basep+pos-to_addr[pgpos].pos;
-
- y=TO_Y(r,g,b);
-
- switch (color) {
- case 0:
- case 2:
- *p=TO_Y(r,g,b); /* Luminance */
- break;
- case 1:
- *p=TO_U(r,g,b); /* Cb */
- break;
- case 3:
- *p=TO_V(r,g,b); /* Cr */
- break;
- }
- pos++;
- }
+ 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:
- kunmap_atomic(basep, KM_BOUNCE_READ);
- spin_unlock_irqrestore(&spinlock,flags);
-
+ return;
}
-static void vivi_fillbuff(struct vivi_dev *dev,struct vivi_buffer *buf)
+
+static void vivi_fillbuff(struct vivi_fh *fh, struct vivi_buffer *buf)
{
- int h,pos=0;
+ struct vivi_dev *dev = fh->dev;
+ int h , pos = 0;
int hmax = buf->vb.height;
int wmax = buf->vb.width;
- struct videobuf_buffer *vb=&buf->vb;
- struct sg_to_addr *to_addr=buf->to_addr;
struct timeval ts;
+ char *tmpbuf;
+ void *vbuf = videobuf_to_vmalloc(&buf->vb);
- /* Test if DMA mapping is ready */
- if (!sg_dma_address(&vb->dma.sglist[0]))
+ if (!vbuf)
return;
- prep_to_addr(to_addr,vb);
-
- /* Check if there is enough memory */
- BUG_ON(buf->vb.dma.nr_pages << PAGE_SHIFT < (buf->vb.width*buf->vb.height)*2);
+ tmpbuf = kmalloc(wmax * 2, GFP_ATOMIC);
+ if (!tmpbuf)
+ return;
- for (h=0;h<hmax;h++) {
- gen_line(to_addr,pos,vb->dma.nr_pages,wmax,hmax,h,dev->timestr);
+ 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->us+=jiffies_to_usecs(jiffies-dev->jiffies);
- dev->jiffies=jiffies;
- if (dev->us>=1000000) {
- dev->us-=1000000;
+ 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;
+ if (dev->s >= 60) {
+ dev->s -= 60;
dev->m++;
- if (dev->m>60) {
- dev->m-=60;
+ if (dev->m > 60) {
+ dev->m -= 60;
dev->h++;
- if (dev->h>24)
- dev->h-=24;
+ if (dev->h > 24)
+ dev->h -= 24;
}
}
}
- sprintf(dev->timestr,"%02d:%02d:%02d:%03d",
- dev->h,dev->m,dev->s,(dev->us+500)/1000);
+ sprintf(dev->timestr, "%02d:%02d:%02d:%03d",
+ dev->h, dev->m, dev->s, dev->ms);
- dprintk(2,"vivifill at %s: Buffer 0x%08lx size= %d\n",dev->timestr,
- (unsigned long)buf->vb.dma.vmalloc,pos);
+ 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.state = STATE_DONE;
buf->vb.field_count++;
do_gettimeofday(&ts);
buf->vb.ts = ts;
-
- list_del(&buf->vb.queue);
- wake_up(&buf->vb.done);
+ buf->vb.state = VIDEOBUF_DONE;
}
-static int restart_video_queue(struct vivi_dmaqueue *dma_q);
-
-static void vivi_thread_tick(struct vivi_dmaqueue *dma_q)
+static void vivi_thread_tick(struct vivi_fh *fh)
{
- struct vivi_buffer *buf;
- struct vivi_dev *dev= container_of(dma_q,struct vivi_dev,vidq);
+ struct vivi_buffer *buf;
+ struct vivi_dev *dev = fh->dev;
+ struct vivi_dmaqueue *dma_q = &dev->vidq;
- int bc;
+ unsigned long flags = 0;
- /* Announces videobuf that all went ok */
- for (bc = 0;; bc++) {
- if (list_empty(&dma_q->active)) {
- dprintk(1,"No active queue to serve\n");
- break;
- }
+ dprintk(dev, 1, "Thread tick\n");
- buf = list_entry(dma_q->active.next,
- struct vivi_buffer, vb.queue);
+ spin_lock_irqsave(&dev->slock, flags);
+ if (list_empty(&dma_q->active)) {
+ dprintk(dev, 1, "No active queue to serve\n");
+ goto unlock;
+ }
- /* Nobody is waiting something to be done, just return */
- if (!waitqueue_active(&buf->vb.done)) {
- mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT);
- return;
- }
+ buf = list_entry(dma_q->active.next,
+ struct vivi_buffer, vb.queue);
- do_gettimeofday(&buf->vb.ts);
- dprintk(2,"[%p/%d] wakeup\n",buf,buf->vb.i);
+ /* Nobody is waiting on this buffer, return */
+ if (!waitqueue_active(&buf->vb.done))
+ goto unlock;
- /* Fill buffer */
- vivi_fillbuff(dev,buf);
+ list_del(&buf->vb.queue);
- if (list_empty(&dma_q->active)) {
- del_timer(&dma_q->timeout);
- } else {
- mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT);
- }
- }
- if (bc != 1)
- dprintk(1,"%s: %d buffers handled (should be 1)\n",__FUNCTION__,bc);
+ 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;
}
-static void vivi_sleep(struct vivi_dmaqueue *dma_q)
+#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(1,"%s dma_q=0x%08lx\n",__FUNCTION__,(unsigned long)dma_q);
+ 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()) {
- dma_q->frame++;
+ if (kthread_should_stop())
+ goto stop_task;
- /* Calculate time to wake up */
- timeout=dma_q->ini_jiffies+msecs_to_jiffies((dma_q->frame*WAKE_NUMERATOR*1000)/WAKE_DENOMINATOR)-jiffies;
+ /* Calculate time to wake up */
+ timeout = msecs_to_jiffies(frames_to_ms(1));
- if (timeout <= 0) {
- int old=dma_q->frame;
- dma_q->frame=(jiffies_to_msecs(jiffies-dma_q->ini_jiffies)*WAKE_DENOMINATOR)/(WAKE_NUMERATOR*1000)+1;
+ vivi_thread_tick(fh);
- timeout=dma_q->ini_jiffies+msecs_to_jiffies((dma_q->frame*WAKE_NUMERATOR*1000)/WAKE_DENOMINATOR)-jiffies;
-
- dprintk(1,"underrun, losed %d frames. "
- "Now, frame is %d. Waking on %d jiffies\n",
- dma_q->frame-old,dma_q->frame,timeout);
- } else
- dprintk(1,"will sleep for %i jiffies\n",timeout);
-
- vivi_thread_tick(dma_q);
-
- schedule_timeout_interruptible (timeout);
- }
+ schedule_timeout_interruptible(timeout);
+stop_task:
remove_wait_queue(&dma_q->wq, &wait);
try_to_freeze();
}
static int vivi_thread(void *data)
{
- struct vivi_dmaqueue *dma_q=data;
+ struct vivi_fh *fh = data;
+ struct vivi_dev *dev = fh->dev;
- dprintk(1,"thread started\n");
+ dprintk(dev, 1, "thread started\n");
- mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT);
+ set_freezable();
for (;;) {
- vivi_sleep(dma_q);
+ vivi_sleep(fh);
if (kthread_should_stop())
break;
}
- dprintk(1, "thread: exit\n");
+ dprintk(dev, 1, "thread: exit\n");
return 0;
}
-static int vivi_start_thread(struct vivi_dmaqueue *dma_q)
+static int vivi_start_thread(struct vivi_fh *fh)
{
- dma_q->frame=0;
- dma_q->ini_jiffies=jiffies;
+ struct vivi_dev *dev = fh->dev;
+ struct vivi_dmaqueue *dma_q = &dev->vidq;
- dprintk(1,"%s\n",__FUNCTION__);
+ dma_q->frame = 0;
+ dma_q->ini_jiffies = jiffies;
- dma_q->kthread = kthread_run(vivi_thread, dma_q, "vivi");
+ dprintk(dev, 1, "%s\n", __func__);
+
+ dma_q->kthread = kthread_run(vivi_thread, fh, "vivi");
if (IS_ERR(dma_q->kthread)) {
printk(KERN_ERR "vivi: kernel_thread() failed\n");
/* Wakes thread */
wake_up_interruptible(&dma_q->wq);
- dprintk(1,"returning from %s\n",__FUNCTION__);
+ dprintk(dev, 1, "returning from %s\n", __func__);
return 0;
}
static void vivi_stop_thread(struct vivi_dmaqueue *dma_q)
{
- dprintk(1,"%s\n",__FUNCTION__);
+ 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;
+ dma_q->kthread = NULL;
}
}
-static int restart_video_queue(struct vivi_dmaqueue *dma_q)
-{
- struct vivi_buffer *buf, *prev;
- struct list_head *item;
-
- dprintk(1,"%s dma_q=0x%08lx\n",__FUNCTION__,(unsigned long)dma_q);
-
- if (!list_empty(&dma_q->active)) {
- buf = list_entry(dma_q->active.next, struct vivi_buffer, vb.queue);
- dprintk(2,"restart_queue [%p/%d]: restart dma\n",
- buf, buf->vb.i);
-
- dprintk(1,"Restarting video dma\n");
- vivi_stop_thread(dma_q);
-// vivi_start_thread(dma_q);
-
- /* cancel all outstanding capture / vbi requests */
- list_for_each(item,&dma_q->active) {
- buf = list_entry(item, struct vivi_buffer, vb.queue);
-
- list_del(&buf->vb.queue);
- buf->vb.state = STATE_ERROR;
- wake_up(&buf->vb.done);
- }
- mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT);
-
- return 0;
- }
-
- prev = NULL;
- for (;;) {
- if (list_empty(&dma_q->queued))
- return 0;
- buf = list_entry(dma_q->queued.next, struct vivi_buffer, vb.queue);
- if (NULL == prev) {
- list_del(&buf->vb.queue);
- list_add_tail(&buf->vb.queue,&dma_q->active);
-
- dprintk(1,"Restarting video dma\n");
- vivi_stop_thread(dma_q);
- vivi_start_thread(dma_q);
-
- buf->vb.state = STATE_ACTIVE;
- mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT);
- dprintk(2,"[%p/%d] restart_queue - first active\n",
- buf,buf->vb.i);
-
- } else if (prev->vb.width == buf->vb.width &&
- prev->vb.height == buf->vb.height &&
- prev->fmt == buf->fmt) {
- list_del(&buf->vb.queue);
- list_add_tail(&buf->vb.queue,&dma_q->active);
- buf->vb.state = STATE_ACTIVE;
- dprintk(2,"[%p/%d] restart_queue - move to active\n",
- buf,buf->vb.i);
- } else {
- return 0;
- }
- prev = buf;
- }
-}
-
-static void vivi_vid_timeout(unsigned long data)
-{
- struct vivi_dev *dev = (struct vivi_dev*)data;
- struct vivi_dmaqueue *vidq = &dev->vidq;
- struct vivi_buffer *buf;
-
- while (!list_empty(&vidq->active)) {
- buf = list_entry(vidq->active.next, struct vivi_buffer, vb.queue);
- list_del(&buf->vb.queue);
- buf->vb.state = STATE_ERROR;
- wake_up(&buf->vb.done);
- printk("vivi/0: [%p/%d] timeout\n", buf, buf->vb.i);
- }
-
- restart_video_queue(vidq);
-}
-
/* ------------------------------------------------------------------
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_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)
{
- dprintk(1,"%s\n",__FUNCTION__);
+ 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();
- /*FIXME: Maybe a spinlock is required here */
- kfree(buf->to_addr);
- buf->to_addr=NULL;
-
- videobuf_waiton(&buf->vb,0,0);
- videobuf_dma_unmap(vq, &buf->vb.dma);
- videobuf_dma_free(&buf->vb.dma);
- buf->vb.state = STATE_NEEDS_INIT;
+ videobuf_vmalloc_free(&buf->vb);
+ dprintk(dev, 1, "free_buffer: freed\n");
+ buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
#define norm_maxw() 1024
enum v4l2_field field)
{
struct vivi_fh *fh = vq->priv_data;
- struct vivi_buffer *buf = container_of(vb,struct vivi_buffer,vb);
- int rc, init_buffer = 0;
+ struct vivi_dev *dev = fh->dev;
+ struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb);
+ int rc;
-// dprintk(1,"%s, field=%d\n",__FUNCTION__,field);
+ 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;
- if (buf->fmt != fh->fmt ||
- buf->vb.width != fh->width ||
- buf->vb.height != fh->height ||
- buf->vb.field != field) {
- buf->fmt = fh->fmt;
- buf->vb.width = fh->width;
- buf->vb.height = fh->height;
- buf->vb.field = field;
- init_buffer = 1;
- }
+ /* 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;
- if (STATE_NEEDS_INIT == buf->vb.state) {
- if (0 != (rc = videobuf_iolock(vq,&buf->vb,NULL)))
+ if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
+ rc = videobuf_iolock(vq, &buf->vb, NULL);
+ if (rc < 0)
goto fail;
}
- buf->vb.state = STATE_PREPARED;
-
- if (NULL == (buf->to_addr = kmalloc(sizeof(*buf->to_addr) * vb->dma.nr_pages,GFP_KERNEL))) {
- rc=-ENOMEM;
- goto fail;
- }
+ buf->vb.state = VIDEOBUF_PREPARED;
return 0;
fail:
- free_buffer(vq,buf);
+ 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;
- struct vivi_buffer *prev;
-
- if (!list_empty(&vidq->queued)) {
- dprintk(1,"adding vb queue=0x%08lx\n",(unsigned long)&buf->vb.queue);
- list_add_tail(&buf->vb.queue,&vidq->queued);
- buf->vb.state = STATE_QUEUED;
- dprintk(2,"[%p/%d] buffer_queue - append to queued\n",
- buf, buf->vb.i);
- } else if (list_empty(&vidq->active)) {
- list_add_tail(&buf->vb.queue,&vidq->active);
-
- buf->vb.state = STATE_ACTIVE;
- mod_timer(&vidq->timeout, jiffies+BUFFER_TIMEOUT);
- dprintk(2,"[%p/%d] buffer_queue - first active\n",
- buf, buf->vb.i);
-
- vivi_start_thread(vidq);
- } else {
- prev = list_entry(vidq->active.prev, struct vivi_buffer, vb.queue);
- if (prev->vb.width == buf->vb.width &&
- prev->vb.height == buf->vb.height &&
- prev->fmt == buf->fmt) {
- list_add_tail(&buf->vb.queue,&vidq->active);
- buf->vb.state = STATE_ACTIVE;
- dprintk(2,"[%p/%d] buffer_queue - append to active\n",
- buf, buf->vb.i);
-
- } else {
- list_add_tail(&buf->vb.queue,&vidq->queued);
- buf->vb.state = STATE_QUEUED;
- dprintk(2,"[%p/%d] buffer_queue - first queued\n",
- buf, buf->vb.i);
- }
- }
-}
-
-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;
+ 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(1,"%s\n",__FUNCTION__);
+ dprintk(dev, 1, "%s\n", __func__);
- vivi_stop_thread(vidq);
-
- free_buffer(vq,buf);
+ buf->vb.state = VIDEOBUF_QUEUED;
+ list_add_tail(&buf->vb.queue, &vidq->active);
}
-static int vivi_map_sg(void *dev, struct scatterlist *sg, int nents,
- int direction)
+static void buffer_release(struct videobuf_queue *vq,
+ struct videobuf_buffer *vb)
{
- int i;
-
- dprintk(1,"%s, number of pages=%d\n",__FUNCTION__,nents);
- BUG_ON(direction == DMA_NONE);
-
- for (i = 0; i < nents; i++ ) {
- BUG_ON(!sg[i].page);
-
- sg_dma_address(&sg[i]) = page_to_phys(sg[i].page) + sg[i].offset;
- }
-
- return nents;
-}
-
-static int vivi_unmap_sg(void *dev,struct scatterlist *sglist,int nr_pages,
- int direction)
-{
- dprintk(1,"%s\n",__FUNCTION__);
- return 0;
-}
+ 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;
-static int vivi_dma_sync_sg(void *dev,struct scatterlist *sglist, int nr_pages,
- int direction)
-{
-// dprintk(1,"%s\n",__FUNCTION__);
+ dprintk(dev, 1, "%s\n", __func__);
-// flush_write_buffers();
- return 0;
+ free_buffer(vq, buf);
}
static struct videobuf_queue_ops vivi_video_qops = {
.buf_prepare = buffer_prepare,
.buf_queue = buffer_queue,
.buf_release = buffer_release,
-
- /* Non-pci handling routines */
- .vb_map_sg = vivi_map_sg,
- .vb_dma_sync_sg = vivi_dma_sync_sg,
- .vb_unmap_sg = vivi_unmap_sg,
};
/* ------------------------------------------------------------------
- IOCTL handling
- ------------------------------------------------------------------*/
-
-
-static int res_get(struct vivi_dev *dev, struct vivi_fh *fh)
-{
- /* is it free? */
- down(&dev->lock);
- if (dev->resources) {
- /* no, someone else uses it */
- up(&dev->lock);
- return 0;
- }
- /* it's free, grab it */
- dev->resources =1;
- dprintk(1,"res: get\n");
- up(&dev->lock);
- return 1;
-}
-
-static int res_locked(struct vivi_dev *dev)
-{
- return (dev->resources);
-}
-
-static void res_free(struct vivi_dev *dev, struct vivi_fh *fh)
-{
- down(&dev->lock);
- dev->resources = 0;
- dprintk(1,"res: put\n");
- up(&dev->lock);
-}
-
-/* ------------------------------------------------------------------
IOCTL vidioc handling
------------------------------------------------------------------*/
-static int vidioc_querycap (struct file *file, void *priv,
+static int vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
strcpy(cap->driver, "vivi");
return 0;
}
-static int vidioc_enum_fmt_cap (struct file *file, void *priv,
+static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
- if (f->index > 0)
+ struct vivi_fmt *fmt;
+
+ if (f->index >= ARRAY_SIZE(formats))
return -EINVAL;
- strlcpy(f->description,format.name,sizeof(f->description));
- f->pixelformat = format.fourcc;
+ fmt = &formats[f->index];
+
+ strlcpy(f->description, fmt->name, sizeof(f->description));
+ f->pixelformat = fmt->fourcc;
return 0;
}
-static int vidioc_g_fmt_cap (struct file *file, void *priv,
+static int vidioc_g_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
- struct vivi_fh *fh=priv;
+ struct vivi_fh *fh = priv;
f->fmt.pix.width = fh->width;
f->fmt.pix.height = fh->height;
return (0);
}
-static int vidioc_try_fmt_cap (struct file *file, void *priv,
+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;
- if (format.fourcc != f->fmt.pix.pixelformat) {
- dprintk(1,"Fourcc format (0x%08x) invalid. Driver accepts "
- "only 0x%08x\n",f->fmt.pix.pixelformat,format.fourcc);
+ fmt = get_format(f);
+ if (!fmt) {
+ dprintk(dev, 1, "Fourcc format (0x%08x) invalid.\n",
+ f->fmt.pix.pixelformat);
return -EINVAL;
}
- fmt=&format;
field = f->fmt.pix.field;
if (field == V4L2_FIELD_ANY) {
-// field=V4L2_FIELD_INTERLACED;
- field=V4L2_FIELD_SEQ_TB;
+ field = V4L2_FIELD_INTERLACED;
} else if (V4L2_FIELD_INTERLACED != field) {
- dprintk(1,"Field type invalid.\n");
+ dprintk(dev, 1, "Field type invalid.\n");
return -EINVAL;
}
}
/*FIXME: This seems to be generic enough to be at videodev2 */
-static int vidioc_s_fmt_cap (struct file *file, void *priv,
+static int vidioc_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
- struct vivi_fh *fh=priv;
- int ret = vidioc_try_fmt_cap(file,fh,f);
+ struct vivi_fh *fh = priv;
+ struct videobuf_queue *q = &fh->vb_vidq;
+ unsigned char r, g, b;
+ int k, is_yuv;
+
+ int ret = vidioc_try_fmt_vid_cap(file, fh, f);
if (ret < 0)
return (ret);
- fh->fmt = &format;
+ 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;
- return (0);
+ /* precalculate color bar values to speed up rendering */
+ for (k = 0; k < 8; k++) {
+ r = bars[k][0];
+ g = bars[k][1];
+ b = bars[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;
+ }
+ }
+
+ ret = 0;
+out:
+ mutex_unlock(&q->vb_lock);
+
+ return (ret);
}
-static int vidioc_reqbufs (struct file *file, void *priv, struct v4l2_requestbuffers *p)
+static int vidioc_reqbufs(struct file *file, void *priv,
+ struct v4l2_requestbuffers *p)
{
- struct vivi_fh *fh=priv;
+ 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)
+static int vidioc_querybuf(struct file *file, void *priv, struct v4l2_buffer *p)
{
- struct vivi_fh *fh=priv;
+ 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)
+static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *p)
{
- struct vivi_fh *fh=priv;
+ 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)
+static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *p)
{
- struct vivi_fh *fh=priv;
+ 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)
+static int vidiocgmbuf(struct file *file, void *priv, struct video_mbuf *mbuf)
{
- struct vivi_fh *fh=priv;
- struct videobuf_queue *q=&fh->vb_vidq;
- struct v4l2_requestbuffers req;
- unsigned int i;
- int ret;
+ struct vivi_fh *fh = priv;
- req.type = q->type;
- req.count = 8;
- req.memory = V4L2_MEMORY_MMAP;
- ret = videobuf_reqbufs(q,&req);
- if (ret < 0)
- return (ret);
-
- mbuf->frames = req.count;
- mbuf->size = 0;
- for (i = 0; i < mbuf->frames; i++) {
- mbuf->offsets[i] = q->bufs[i]->boff;
- mbuf->size += q->bufs[i]->bsize;
- }
- return (0);
+ 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;
- struct vivi_dev *dev = fh->dev;
+ struct vivi_fh *fh = priv;
if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (i != fh->type)
return -EINVAL;
- if (!res_get(dev,fh))
- return -EBUSY;
- return (videobuf_streamon(&fh->vb_vidq));
+ 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;
- struct vivi_dev *dev = fh->dev;
+ struct vivi_fh *fh = priv;
if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (i != fh->type)
return -EINVAL;
- videobuf_streamoff(&fh->vb_vidq);
- res_free(dev,fh);
-
- return (0);
+ return videobuf_streamoff(&fh->vb_vidq);
}
-static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *i)
+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,
+static int vidioc_enum_input(struct file *file, void *priv,
struct v4l2_input *inp)
{
if (inp->index != 0)
return -EINVAL;
inp->type = V4L2_INPUT_TYPE_CAMERA;
- inp->std = V4L2_STD_NTSC_M;
- strcpy(inp->name,"Camera");
+ inp->std = V4L2_STD_525_60;
+ strcpy(inp->name, "Camera");
return (0);
}
-static int vidioc_g_input (struct file *file, void *priv, unsigned int *i)
+static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
*i = 0;
return (0);
}
-static int vidioc_s_input (struct file *file, void *priv, unsigned int i)
+static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
{
if (i > 0)
return -EINVAL;
}
/* --- controls ---------------------------------------------- */
-static int vidioc_queryctrl (struct file *file, void *priv,
- struct v4l2_queryctrl *qc)
+static int vidioc_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *qc)
{
int i;
return -EINVAL;
}
-static int vidioc_g_ctrl (struct file *file, void *priv,
- struct v4l2_control *ctrl)
+static int vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
{
int i;
for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++)
if (ctrl->id == vivi_qctrl[i].id) {
- ctrl->value=qctl_regs[i];
+ ctrl->value = qctl_regs[i];
return (0);
}
return -EINVAL;
}
-static int vidioc_s_ctrl (struct file *file, void *priv,
+static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
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) {
+ if (ctrl->value < vivi_qctrl[i].minimum
+ || ctrl->value > vivi_qctrl[i].maximum) {
return (-ERANGE);
}
- qctl_regs[i]=ctrl->value;
+ qctl_regs[i] = ctrl->value;
return (0);
}
return -EINVAL;
File operations for the device
------------------------------------------------------------------*/
-#define line_buf_size(norm) (norm_maxw(norm)*(format.depth+7)/8)
-
-static int vivi_open(struct inode *inode, struct file *file)
+static int vivi_open(struct file *file)
{
- int minor = iminor(inode);
- struct vivi_dev *h,*dev = NULL;
- struct vivi_fh *fh;
- struct list_head *list;
- enum v4l2_buf_type type = 0;
+ int minor = video_devdata(file)->minor;
+ struct vivi_dev *dev;
+ struct vivi_fh *fh = NULL;
int i;
+ int retval = 0;
- printk(KERN_DEBUG "vivi: open called (minor=%d)\n",minor);
-
- list_for_each(list,&vivi_devlist) {
- h = list_entry(list, struct vivi_dev, vivi_devlist);
- if (h->vfd.minor == minor) {
- dev = h;
- type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- }
- }
- if (NULL == dev)
- return -ENODEV;
+ printk(KERN_DEBUG "vivi: open called (minor=%d)\n", minor);
+ lock_kernel();
+ list_for_each_entry(dev, &vivi_devlist, vivi_devlist)
+ if (dev->vfd->minor == minor)
+ goto found;
+ unlock_kernel();
+ return -ENODEV;
-
- /* If more than one user, mutex should be added */
+found:
+ mutex_lock(&dev->mutex);
dev->users++;
- dprintk(1,"open minor=%d type=%s users=%d\n",
- minor,v4l2_type_names[type],dev->users);
+ if (dev->users > 1) {
+ dev->users--;
+ retval = -EBUSY;
+ goto unlock;
+ }
+
+ dprintk(dev, 1, "open minor=%d type=%s users=%d\n", minor,
+ v4l2_type_names[V4L2_BUF_TYPE_VIDEO_CAPTURE], dev->users);
/* allocate + initialize per filehandle data */
- fh = kzalloc(sizeof(*fh),GFP_KERNEL);
+ fh = kzalloc(sizeof(*fh), GFP_KERNEL);
if (NULL == fh) {
dev->users--;
- return -ENOMEM;
+ retval = -ENOMEM;
+ goto unlock;
+ }
+unlock:
+ mutex_unlock(&dev->mutex);
+ if (retval) {
+ unlock_kernel();
+ return retval;
}
file->private_data = fh;
fh->dev = dev;
fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- fh->fmt = &format;
+ fh->fmt = &formats[0];
fh->width = 640;
fh->height = 480;
/* Put all controls at a sane state */
for (i = 0; i < ARRAY_SIZE(vivi_qctrl); i++)
- qctl_regs[i] =vivi_qctrl[i].default_value;
-
- dprintk(1,"Open: fh=0x%08lx, dev=0x%08lx, dev->vidq=0x%08lx\n",
- (unsigned long)fh,(unsigned long)dev,(unsigned long)&dev->vidq);
- dprintk(1,"Open: list_empty queued=%d\n",list_empty(&dev->vidq.queued));
- dprintk(1,"Open: list_empty active=%d\n",list_empty(&dev->vidq.active));
+ qctl_regs[i] = vivi_qctrl[i].default_value;
/* Resets frame counters */
- dev->h=0;
- dev->m=0;
- dev->s=0;
- dev->us=0;
- dev->jiffies=jiffies;
- sprintf(dev->timestr,"%02d:%02d:%02d:%03d",
- dev->h,dev->m,dev->s,(dev->us+500)/1000);
-
- videobuf_queue_init(&fh->vb_vidq, &vivi_video_qops,
- NULL, NULL,
- fh->type,
- V4L2_FIELD_INTERLACED,
- sizeof(struct vivi_buffer),fh);
+ 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);
+ unlock_kernel();
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;
+ struct vivi_fh *fh = file->private_data;
- if (fh->type==V4L2_BUF_TYPE_VIDEO_CAPTURE) {
- if (res_locked(fh->dev))
- return -EBUSY;
- return videobuf_read_one(&fh->vb_vidq, data, count, ppos,
+ 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;
vivi_poll(struct file *file, struct poll_table_struct *wait)
{
struct vivi_fh *fh = file->private_data;
- struct vivi_buffer *buf;
+ struct vivi_dev *dev = fh->dev;
+ struct videobuf_queue *q = &fh->vb_vidq;
- dprintk(1,"%s\n",__FUNCTION__);
+ dprintk(dev, 1, "%s\n", __func__);
if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
return POLLERR;
- if (res_get(fh->dev,fh)) {
- dprintk(1,"poll: mmap interface\n");
- /* streaming capture */
- if (list_empty(&fh->vb_vidq.stream))
- return POLLERR;
- buf = list_entry(fh->vb_vidq.stream.next,struct vivi_buffer,vb.stream);
- } else {
- dprintk(1,"poll: read() interface\n");
- /* read() capture */
- buf = (struct vivi_buffer*)fh->vb_vidq.read_buf;
- if (NULL == buf)
- return POLLERR;
- }
- poll_wait(file, &buf->vb.done, wait);
- if (buf->vb.state == STATE_DONE ||
- buf->vb.state == STATE_ERROR)
- return POLLIN|POLLRDNORM;
- return 0;
+ return videobuf_poll_stream(file, q, wait);
}
-static int vivi_release(struct inode *inode, struct file *file)
+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 = iminor(inode);
+ int minor = video_devdata(file)->minor;
vivi_stop_thread(vidq);
+ videobuf_stop(&fh->vb_vidq);
videobuf_mmap_free(&fh->vb_vidq);
- kfree (fh);
+ kfree(fh);
+ mutex_lock(&dev->mutex);
dev->users--;
+ mutex_unlock(&dev->mutex);
- printk(KERN_DEBUG "vivi: close called (minor=%d, users=%d)\n",minor,dev->users);
+ 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)
+static int vivi_release(void)
{
- struct vivi_fh *fh = file->private_data;
+ 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);
+
+ if (-1 != dev->vfd->minor) {
+ printk(KERN_INFO "%s: unregistering /dev/video%d\n",
+ VIVI_MODULE_NAME, dev->vfd->num);
+ video_unregister_device(dev->vfd);
+ } else {
+ printk(KERN_INFO "%s: releasing /dev/video%d\n",
+ VIVI_MODULE_NAME, dev->vfd->num);
+ video_device_release(dev->vfd);
+ }
+
+ kfree(dev);
+ }
+
+ 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 (1,"mmap called, vma=0x%08lx\n",(unsigned long)vma);
+ dprintk(dev, 1, "mmap called, vma=0x%08lx\n", (unsigned long)vma);
- ret=videobuf_mmap_mapper(&fh->vb_vidq, vma);
+ ret = videobuf_mmap_mapper(&fh->vb_vidq, vma);
- dprintk (1,"vma start=0x%08lx, size=%ld, ret=%d\n",
+ 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 file_operations vivi_fops = {
+static const struct v4l2_file_operations vivi_fops = {
.owner = THIS_MODULE,
.open = vivi_open,
- .release = vivi_release,
+ .release = vivi_close,
.read = vivi_read,
.poll = vivi_poll,
.ioctl = video_ioctl2, /* V4L2 ioctl handler */
- .mmap = vivi_mmap,
- .llseek = no_llseek,
+ .mmap = vivi_mmap,
};
-static struct video_device vivi = {
- .name = "vivi",
- .type = VID_TYPE_CAPTURE,
- .hardware = 0,
- .fops = &vivi_fops,
- .minor = -1,
-// .release = video_device_release,
-
+static const struct v4l2_ioctl_ops vivi_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
- .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap,
- .vidioc_g_fmt_cap = vidioc_g_fmt_cap,
- .vidioc_try_fmt_cap = vidioc_try_fmt_cap,
- .vidioc_s_fmt_cap = vidioc_s_fmt_cap,
+ .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,
#ifdef CONFIG_VIDEO_V4L1_COMPAT
.vidiocgmbuf = vidiocgmbuf,
#endif
- .tvnorms = V4L2_STD_NTSC_M,
+};
+
+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
------------------------------------------------------------------*/
+/* 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. Since there are 64 minors for video grabbers, this is
+ currently the theoretical maximum limit. However, a further limit does
+ exist at videodev that forbids any driver to register more than 32 video
+ grabbers.
+ */
static int __init vivi_init(void)
{
- int ret;
+ int ret = -ENOMEM, i;
struct vivi_dev *dev;
+ struct video_device *vfd;
+
+ if (n_devs <= 0)
+ n_devs = 1;
+
+ for (i = 0; i < n_devs; i++) {
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ break;
+
+ /* 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);
+
+ vfd = video_device_alloc();
+ if (!vfd) {
+ kfree(dev);
+ break;
+ }
- dev = kzalloc(sizeof(*dev),GFP_KERNEL);
- if (NULL == dev)
- return -ENOMEM;
- list_add_tail(&dev->vivi_devlist,&vivi_devlist);
+ *vfd = vivi_template;
- /* init video dma queues */
- INIT_LIST_HEAD(&dev->vidq.active);
- INIT_LIST_HEAD(&dev->vidq.queued);
- init_waitqueue_head(&dev->vidq.wq);
+ ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr);
+ if (ret < 0) {
+ video_device_release(vfd);
+ kfree(dev);
- /* initialize locks */
- init_MUTEX(&dev->lock);
+ /* If some registers succeeded, keep driver */
+ if (i)
+ ret = 0;
- dev->vidq.timeout.function = vivi_vid_timeout;
- dev->vidq.timeout.data = (unsigned long)dev;
- init_timer(&dev->vidq.timeout);
+ break;
+ }
+
+ /* 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->minor);
+
+ if (video_nr >= 0)
+ video_nr++;
+
+ dev->vfd = vfd;
+ printk(KERN_INFO "%s: V4L2 device registered as /dev/video%d\n",
+ VIVI_MODULE_NAME, vfd->num);
+ }
+
+ if (ret < 0) {
+ vivi_release();
+ printk(KERN_INFO "Error %d while loading vivi driver\n", ret);
+ } else {
+ 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;
+ }
- ret = video_register_device(&vivi, VFL_TYPE_GRABBER, video_nr);
- printk(KERN_INFO "Video Technology Magazine Virtual Video Capture Board (Load status: %d)\n", ret);
return ret;
}
static void __exit vivi_exit(void)
{
- struct vivi_dev *h;
- struct list_head *list;
-
- while (!list_empty(&vivi_devlist)) {
- list = vivi_devlist.next;
- list_del(list);
- h = list_entry(list, struct vivi_dev, vivi_devlist);
- kfree (h);
- }
- video_unregister_device(&vivi);
+ vivi_release();
}
module_init(vivi_init);
MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol");
MODULE_LICENSE("Dual BSD/GPL");
-module_param(video_nr, int, 0);
+module_param(video_nr, uint, 0444);
+MODULE_PARM_DESC(video_nr, "video iminor start number");
-module_param_named(debug,vivi.debug, int, 0644);
-MODULE_PARM_DESC(debug,"activates debug info");
+module_param(n_devs, uint, 0444);
+MODULE_PARM_DESC(n_devs, "number of video devices to create");
-module_param(vid_limit,int,0644);
-MODULE_PARM_DESC(vid_limit,"capture memory limit in megabytes");
+module_param_named(debug, vivi_template.debug, int, 0444);
+MODULE_PARM_DESC(debug, "activates debug info");
+module_param(vid_limit, int, 0644);
+MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff