X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fmedia%2Fvideo%2Fvivi.c;h=b1e9592acb907bb06ca59d82e8fa6cafcf5384fc;hb=4269a8eed210d143298baf80185317fc1dcb25ca;hp=ee73dc75131ccb5348089ed9548f737937d4cc0c;hpb=4c5cdb1e1f2a502069f57a60b5c6b97b8106c73c;p=linux-2.6-omap-h63xx.git diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c index ee73dc75131..b1e9592acb9 100644 --- a/drivers/media/video/vivi.c +++ b/drivers/media/video/vivi.c @@ -44,21 +44,18 @@ #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_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[] = { @@ -71,7 +68,7 @@ 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", @@ -112,9 +109,9 @@ static struct v4l2_queryctrl vivi_qctrl[] = { 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) @@ -149,8 +146,6 @@ struct vivi_buffer { struct vivi_dmaqueue { struct list_head active; - struct list_head queued; - struct timer_list timeout; /* thread for generating video stream*/ struct task_struct *kthread; @@ -165,18 +160,22 @@ static LIST_HEAD(vivi_devlist); struct vivi_dev { struct list_head vivi_devlist; - struct mutex lock; + spinlock_t slock; + struct mutex mutex; int users; /* various device info */ - 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 { @@ -184,7 +183,7 @@ 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; @@ -203,109 +202,113 @@ enum colors { 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 gen_line(char *basep,int inipos,int wmax, - int hmax, int line, int count, char *timestr) +static void gen_line(char *basep, int inipos, int wmax, + int hmax, int line, int count, char *timestr) { - int w,i,j,pos=inipos,y; - char *p,*s; - u8 chr,r,g,b,color; + int w, i, j, y; + int pos = inipos; + char *p, *s; + u8 chr, r, g, b, color; /* We will just duplicate the second pixel at the packet */ - wmax/=2; + wmax /= 2; /* Generate a standard color bar pattern */ - for (w=0;w=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; + 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 = 0; + g = 198; + b = 0; + } else { + /* Background color */ + r = bars[BLACK][0]; + g = bars[BLACK][1]; + b = bars[BLACK][2]; } - pos=inipos+j*2; - for (color=0;color<4;color++) { - p=basep+pos; + pos = inipos + j * 2; + for (color = 0; color < 4; color++) { + p = basep + pos; - y=TO_Y(r,g,b); + 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; + case 0: + case 2: + *p = TO_Y(r, g, b); /* Luma */ + break; + case 1: + *p = TO_U(r, g, b); /* Cb */ + break; + case 3: + *p = TO_V(r, g, b); /* Cr */ + break; } pos++; } @@ -314,174 +317,164 @@ static void gen_line(char *basep,int inipos,int wmax, } } - end: return; } -static void vivi_fillbuff(struct vivi_dev *dev,struct vivi_buffer *buf) + +static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf) { - int h,pos=0; + int h , pos = 0; int hmax = buf->vb.height; int wmax = buf->vb.width; struct timeval ts; - char *tmpbuf = kmalloc(wmax*2,GFP_KERNEL); - void *vbuf=videobuf_to_vmalloc (&buf->vb); - /* FIXME: move to dev struct */ - static int mv_count=0; + char *tmpbuf = kmalloc(wmax * 2, GFP_ATOMIC); + void *vbuf = videobuf_to_vmalloc(&buf->vb); if (!tmpbuf) return; - for (h=0;hmv_count, dev->timestr); - /* FIXME: replacing to __copy_to_user */ - if (copy_to_user(vbuf+pos,tmpbuf,wmax*2)!=0) - dprintk(2,"vivifill copy_to_user failed.\n"); + memcpy(vbuf + pos, tmpbuf, wmax * 2); pos += wmax*2; } - mv_count++; + 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)tmpbuf,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"); + + 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); + buf = list_entry(dma_q->active.next, + struct vivi_buffer, vb.queue); - /* Nobody is waiting something to be done, just return */ - if (!waitqueue_active(&buf->vb.done)) { - mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT); - return; - } + /* Nobody is waiting on this buffer, return */ + if (!waitqueue_active(&buf->vb.done)) + goto unlock; - do_gettimeofday(&buf->vb.ts); - dprintk(2,"[%p/%d] wakeup\n",buf,buf->vb.i); + list_del(&buf->vb.queue); - /* Fill buffer */ - vivi_fillbuff(dev,buf); + do_gettimeofday(&buf->vb.ts); - 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); + /* Fill buffer */ + vivi_fillbuff(dev, 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++; - - /* Calculate time to wake up */ - timeout=dma_q->ini_jiffies+msecs_to_jiffies((dma_q->frame*WAKE_NUMERATOR*1000)/WAKE_DENOMINATOR)-jiffies; - - 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; + if (kthread_should_stop()) + goto stop_task; - 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)); - 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(fh); - 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; + + dma_q->frame = 0; + dma_q->ini_jiffies = jiffies; - dprintk(1,"%s\n",__FUNCTION__); + dprintk(dev, 1, "%s\n", __func__); - dma_q->kthread = kthread_run(vivi_thread, dma_q, "vivi"); + dma_q->kthread = kthread_run(vivi_thread, fh, "vivi"); if (IS_ERR(dma_q->kthread)) { printk(KERN_ERR "vivi: kernel_thread() failed\n"); @@ -490,103 +483,30 @@ static int vivi_start_thread(struct vivi_dmaqueue *dma_q) /* 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; - } -} - -static int restart_video_queue(struct vivi_dmaqueue *dma_q) -{ - struct vivi_buffer *buf, *prev; - - 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_entry_safe(buf, prev, &dma_q->active, 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; + dma_q->kthread = NULL; } } -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; @@ -596,21 +516,25 @@ buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size) while (*size * *count > vid_limit * 1024 * 1024) (*count)--; - dprintk(1,"%s, count=%d, size=%d\n",__FUNCTION__,*count, *size); + 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(); - videobuf_waiton(&buf->vb,0,0); videobuf_vmalloc_free(&buf->vb); - buf->vb.state = STATE_NEEDS_INIT; + dprintk(dev, 1, "free_buffer: freed\n"); + buf->vb.state = VIDEOBUF_NEEDS_INIT; } #define norm_maxw() 1024 @@ -620,99 +544,67 @@ buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb, 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; + 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); - } - } + 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) +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_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_dmaqueue *vidq = &dev->vidq; + struct vivi_dev *dev = (struct vivi_dev *)fh->dev; - dprintk(1,"%s\n",__FUNCTION__); + dprintk(dev, 1, "%s\n", __func__); - vivi_stop_thread(vidq); - - free_buffer(vq,buf); + free_buffer(vq, buf); } static struct videobuf_queue_ops vivi_video_qops = { @@ -725,7 +617,7 @@ static struct videobuf_queue_ops vivi_video_qops = { /* ------------------------------------------------------------------ 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"); @@ -737,21 +629,21 @@ static int vidioc_querycap (struct file *file, void *priv, return 0; } -static int vidioc_enum_fmt_cap (struct file *file, void *priv, +static int vidioc_enum_fmt_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) { if (f->index > 0) return -EINVAL; - strlcpy(f->description,format.name,sizeof(f->description)); + strlcpy(f->description, format.name, sizeof(f->description)); f->pixelformat = format.fourcc; return 0; } -static int vidioc_g_fmt_cap (struct file *file, void *priv, +static int vidioc_g_fmt_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; @@ -765,26 +657,29 @@ static int vidioc_g_fmt_cap (struct file *file, void *priv, return (0); } -static int vidioc_try_fmt_cap (struct file *file, void *priv, +static int vidioc_try_fmt_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); + dprintk(dev, 1, "Fourcc format (0x%08x) invalid. " + "Driver accepts only 0x%08x\n", + f->fmt.pix.pixelformat, format.fourcc); return -EINVAL; } - fmt=&format; + fmt = &format; field = f->fmt.pix.field; if (field == V4L2_FIELD_ANY) { - field=V4L2_FIELD_INTERLACED; + 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; } @@ -810,64 +705,79 @@ static int vidioc_try_fmt_cap (struct file *file, void *priv, } /*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_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; + + int ret = vidioc_try_fmt_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 = &format; 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); + 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 vivi_fh *fh = priv; - return videobuf_cgmbuf (&fh->vb_vidq, mbuf, 8); + 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_fh *fh = priv; if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; @@ -879,7 +789,7 @@ static int vidioc_streamon(struct file *file, void *priv, enum v4l2_buf_type i) static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) { - struct vivi_fh *fh=priv; + struct vivi_fh *fh = priv; if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; @@ -889,32 +799,32 @@ static int vidioc_streamoff(struct file *file, void *priv, enum v4l2_buf_type i) 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; @@ -923,8 +833,8 @@ static int vidioc_s_input (struct file *file, void *priv, unsigned int i) } /* --- 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; @@ -938,33 +848,31 @@ static int vidioc_queryctrl (struct file *file, void *priv, 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; @@ -982,29 +890,39 @@ static int vivi_open(struct inode *inode, struct file *file) struct vivi_dev *dev; struct vivi_fh *fh; int i; + int retval = 0; - printk(KERN_DEBUG "vivi: open called (minor=%d)\n",minor); + printk(KERN_DEBUG "vivi: open called (minor=%d)\n", minor); list_for_each_entry(dev, &vivi_devlist, vivi_devlist) - if (dev->vfd.minor == minor) + if (dev->vfd->minor == minor) goto found; return -ENODEV; -found: - - - /* 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, + 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) + return retval; file->private_data = fh; fh->dev = dev; @@ -1016,27 +934,23 @@ found: /* 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); + 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, NULL, - fh->type, - V4L2_FIELD_INTERLACED, - sizeof(struct vivi_buffer),fh); + NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED, + sizeof(struct vivi_buffer), fh); + + vivi_start_thread(fh); return 0; } @@ -1044,9 +958,9 @@ found: 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 (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0, file->f_flags & O_NONBLOCK); } @@ -1057,9 +971,10 @@ 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(1,"%s\n",__FUNCTION__); + dprintk(dev, 1, "%s\n", __func__); if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type) return POLLERR; @@ -1067,7 +982,7 @@ vivi_poll(struct file *file, struct poll_table_struct *wait) return videobuf_poll_stream(file, q, wait); } -static int vivi_release(struct inode *inode, struct file *file) +static int vivi_close(struct inode *inode, struct file *file) { struct vivi_fh *fh = file->private_data; struct vivi_dev *dev = fh->dev; @@ -1076,28 +991,53 @@ static int vivi_release(struct inode *inode, struct file *file) int minor = iminor(inode); 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) + video_unregister_device(dev->vfd); + else + 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); @@ -1108,20 +1048,21 @@ vivi_mmap(struct file *file, struct vm_area_struct * vma) static const struct 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 */ + .compat_ioctl = v4l_compat_ioctl32, .mmap = vivi_mmap, .llseek = no_llseek, }; -static struct video_device vivi = { +static struct video_device vivi_template = { .name = "vivi", .type = VID_TYPE_CAPTURE, .fops = &vivi_fops, .minor = -1, -// .release = video_device_release, + .release = video_device_release, .vidioc_querycap = vidioc_querycap, .vidioc_enum_fmt_cap = vidioc_enum_fmt_cap, @@ -1144,7 +1085,7 @@ static struct video_device vivi = { #ifdef CONFIG_VIDEO_V4L1_COMPAT .vidiocgmbuf = vidiocgmbuf, #endif - .tvnorms = V4L2_STD_NTSC_M, + .tvnorms = V4L2_STD_525_60, .current_norm = V4L2_STD_NTSC_M, }; /* ----------------------------------------------------------------- @@ -1153,43 +1094,56 @@ static struct video_device vivi = { static int __init vivi_init(void) { - int ret; + int ret = -ENOMEM, i; struct vivi_dev *dev; + struct video_device *vfd; + + for (i = 0; i < n_devs; i++) { + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (NULL == dev) + break; - dev = kzalloc(sizeof(*dev),GFP_KERNEL); - if (NULL == dev) - return -ENOMEM; - list_add_tail(&dev->vivi_devlist,&vivi_devlist); + list_add_tail(&dev->vivi_devlist, &vivi_devlist); - /* init video dma queues */ - INIT_LIST_HEAD(&dev->vidq.active); - INIT_LIST_HEAD(&dev->vidq.queued); - init_waitqueue_head(&dev->vidq.wq); + /* init video dma queues */ + INIT_LIST_HEAD(&dev->vidq.active); + init_waitqueue_head(&dev->vidq.wq); - /* initialize locks */ - mutex_init(&dev->lock); + /* initialize locks */ + spin_lock_init(&dev->slock); + mutex_init(&dev->mutex); - dev->vidq.timeout.function = vivi_vid_timeout; - dev->vidq.timeout.data = (unsigned long)dev; - init_timer(&dev->vidq.timeout); + vfd = video_device_alloc(); + if (NULL == vfd) + break; + + *vfd = vivi_template; + + ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr); + if (ret < 0) + break; + + snprintf(vfd->name, sizeof(vfd->name), "%s (%i)", + vivi_template.name, vfd->minor); + + if (video_nr >= 0) + video_nr++; + + dev->vfd = vfd; + } - 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); + 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 successfully loaded.\n"); 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); @@ -1200,10 +1154,13 @@ MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol"); MODULE_LICENSE("Dual BSD/GPL"); module_param(video_nr, int, 0); +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, int, 0); +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");