* 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/slab.h>
+#include <linux/font.h>
#include <linux/version.h>
+#include <linux/mutex.h>
#include <linux/videodev2.h>
-#include <linux/dma-mapping.h>
-#ifdef CONFIG_VIDEO_V4L1_COMPAT
-/* Include V4L1 specific functions. Should be removed soon */
-#include <linux/videodev.h>
-#endif
-#include <linux/interrupt.h>
-#include <media/video-buf.h>
-#include <media/v4l2-common.h>
#include <linux/kthread.h>
-#include <linux/highmem.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20)
#include <linux/freezer.h>
+#endif
+#include <media/videobuf-vmalloc.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-common.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 MAX_WIDTH 1920
+#define MAX_HEIGHT 1200
#define VIVI_MAJOR_VERSION 0
-#define VIVI_MINOR_VERSION 4
+#define VIVI_MINOR_VERSION 7
#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)
+
+MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board");
+MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol");
+MODULE_LICENSE("Dual BSD/GPL");
-/* 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 unsigned video_nr = -1;
+module_param(video_nr, uint, 0644);
+MODULE_PARM_DESC(video_nr, "videoX start number, -1 is autodetect");
-/* 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 = 0,
- .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 = 0,
- }, {
- .id = V4L2_CID_CONTRAST,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Contrast",
- .minimum = 0,
- .maximum = 255,
- .step = 0x1,
- .default_value = 0x10,
- .flags = 0,
- }, {
- .id = V4L2_CID_SATURATION,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Saturation",
- .minimum = 0,
- .maximum = 255,
- .step = 0x1,
- .default_value = 127,
- .flags = 0,
- }, {
- .id = V4L2_CID_HUE,
- .type = V4L2_CTRL_TYPE_INTEGER,
- .name = "Hue",
- .minimum = -128,
- .maximum = 127,
- .step = 0x1,
- .default_value = 0,
- .flags = 0,
- }
-};
+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 int qctl_regs[ARRAY_SIZE(vivi_qctrl)];
+static unsigned int vid_limit = 16;
+module_param(vid_limit, uint, 0644);
+MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
-#define dprintk(level,fmt, arg...) \
- do { \
- if (vivi.debug >= (level)) \
- printk(KERN_DEBUG "vivi: " fmt , ## arg); \
- } while (0)
+/* Global font descriptor */
+static const u8 *font8x16;
+
+#define dprintk(dev, level, fmt, arg...) \
+ v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ## arg)
/* ------------------------------------------------------------------
Basic structures
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 v4l2_device v4l2_dev;
- struct semaphore lock;
+ /* controls */
+ int brightness;
+ int contrast;
+ int saturation;
+ int hue;
+ int volume;
- int users;
+ spinlock_t slock;
+ struct mutex mutex;
/* 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;
- char timestr[13];
-};
+ unsigned ms;
+ unsigned long jiffies;
-struct vivi_fh {
- struct vivi_dev *dev;
+ int mv_count; /* Controls bars movement */
+
+ /* Input Number */
+ int input;
/* 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 long generating;
+ u8 bars[9][3];
+ u8 line[MAX_WIDTH * 4];
};
/* ------------------------------------------------------------------
enum colors {
WHITE,
- AMBAR,
+ AMBER,
CYAN,
GREEN,
MAGENTA,
RED,
- BLUE
+ BLUE,
+ BLACK,
+ TEXT_BLACK,
+};
+
+/* R G B */
+#define COLOR_WHITE {204, 204, 204}
+#define COLOR_AMBER {208, 208, 0}
+#define COLOR_CYAN { 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[9][3];
};
-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}
+/* 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_AMBER, COLOR_CYAN, COLOR_GREEN,
+ COLOR_MAGENTA, COLOR_RED, COLOR_BLUE, COLOR_BLACK, COLOR_BLACK }
+ }, {
+ { COLOR_WHITE, COLOR_AMBER, COLOR_BLACK, COLOR_WHITE,
+ COLOR_AMBER, COLOR_BLACK, COLOR_WHITE, COLOR_AMBER, COLOR_BLACK }
+ }, {
+ { COLOR_WHITE, COLOR_CYAN, COLOR_BLACK, COLOR_WHITE,
+ COLOR_CYAN, COLOR_BLACK, COLOR_WHITE, COLOR_CYAN, COLOR_BLACK }
+ }, {
+ { COLOR_WHITE, COLOR_GREEN, COLOR_BLACK, COLOR_WHITE,
+ COLOR_GREEN, COLOR_BLACK, COLOR_WHITE, COLOR_GREEN, COLOR_BLACK }
+ },
};
-#define TO_Y(r,g,b) (((16829*r +33039*g +6416*b + 32768)>>16)+16)
+#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)
+#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 TSTAMP_MIN_Y 24
-#define TSTAMP_MAX_Y TSTAMP_MIN_Y+15
-#define TSTAMP_MIN_X 64
+#define TO_U(r, g, b) \
+ (((-9714 * r - 19070 * g + 28784 * b + 32768) >> 16) + 128)
-static void prep_to_addr(struct sg_to_addr to_addr[],
- struct videobuf_buffer *vb)
+/* precalculate color bar values to speed up rendering */
+static void precalculate_bars(struct vivi_dev *dev)
{
- int i, pos=0;
+ u8 r, g, b;
+ int k, is_yuv;
+
+ for (k = 0; k < 9; k++) {
+ r = bars[dev->input].bar[k][0];
+ g = bars[dev->input].bar[k][1];
+ b = bars[dev->input].bar[k][2];
+ is_yuv = 0;
+
+ switch (dev->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;
+ }
- 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;
+ if (is_yuv) {
+ dev->bars[k][0] = TO_Y(r, g, b); /* Luma */
+ dev->bars[k][1] = TO_U(r, g, b); /* Cb */
+ dev->bars[k][2] = TO_V(r, g, b); /* Cr */
+ } else {
+ dev->bars[k][0] = r;
+ dev->bars[k][1] = g;
+ dev->bars[k][2] = b;
+ }
}
}
-static int get_addr_pos(int pos, int pages, struct sg_to_addr to_addr[])
+#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_dev *dev, u8 *buf, int colorpos)
{
- int p1=0,p2=pages-1,p3=pages/2;
+ u8 r_y, g_u, b_v;
+ int color;
+ u8 *p;
- /* Sanity test */
- BUG_ON (pos>=to_addr[p2].pos+to_addr[p2].sg->length);
+ r_y = dev->bars[colorpos][0]; /* R or precalculated Y */
+ g_u = dev->bars[colorpos][1]; /* G or precalculated U */
+ b_v = dev->bars[colorpos][2]; /* B or precalculated V */
- while (p1+1<p2) {
- if (pos < to_addr[p3].pos) {
- p2=p3;
- } else {
- p1=p3;
+ for (color = 0; color < 4; color++) {
+ p = buf + color;
+
+ switch (dev->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 precalculate_line(struct vivi_dev *dev)
{
- int w,i,j,pos=inipos,pgpos,oldpg,y;
- char *p,*s,*basep;
- struct page *pg;
- u8 chr,r,g,b,color;
-
- /* 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);
- basep = kmap_atomic(pg, KM_BOUNCE_READ)+to_addr[oldpg].sg->offset;
-
- /* We will just duplicate the second pixel at the packet */
- 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;
+ int w;
- 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++;
- }
+ for (w = 0; w < dev->width * 2; w += 2) {
+ int colorpos = (w / (dev->width / 8) % 8);
+
+ gen_twopix(dev, dev->line + w * 2, colorpos);
}
+}
+
+static void gen_text(struct vivi_dev *dev, char *basep,
+ int y, int x, char *text)
+{
+ int line;
- /* Checks if it is possible to show timestamp */
- if (TSTAMP_MAX_Y>=hmax)
- goto end;
- if (TSTAMP_MIN_X+strlen(timestr)>=wmax)
- goto end;
+ /* Checks if it is possible to show string */
+ if (y + 16 >= dev->height || x + strlen(text) * 8 >= dev->width)
+ return;
/* 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++;
- }
- j++;
+ for (line = y; line < y + 16; line++) {
+ int j = 0;
+ char *pos = basep + line * dev->width * 2 + x * 2;
+ char *s;
+
+ for (s = text; *s; s++) {
+ u8 chr = font8x16[*s * 16 + line - y];
+ int i;
+
+ for (i = 0; i < 7; i++, j++) {
+ /* Draw white font on black background */
+ if (chr & (1 << (7 - i)))
+ gen_twopix(dev, pos + j * 2, WHITE);
+ else
+ gen_twopix(dev, pos + j * 2, TEXT_BLACK);
}
}
}
-
-
-end:
- kunmap_atomic(basep, KM_BOUNCE_READ);
}
-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 hmax = buf->vb.height;
- int wmax = buf->vb.width;
- struct videobuf_buffer *vb=&buf->vb;
- struct sg_to_addr *to_addr=buf->to_addr;
+ int hmax = buf->vb.height;
+ int wmax = buf->vb.width;
struct timeval ts;
+ void *vbuf = videobuf_to_vmalloc(&buf->vb);
+ unsigned ms;
+ char str[100];
+ int h, line = 1;
- /* 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);
-
- for (h=0;h<hmax;h++) {
- gen_line(to_addr,pos,vb->dma.nr_pages,wmax,hmax,h,dev->timestr);
- pos += wmax*2;
- }
+ for (h = 0; h < hmax; h++)
+ memcpy(vbuf + h * wmax * 2, dev->line + (dev->mv_count % wmax) * 2, wmax * 2);
/* Updates stream time */
- dev->us+=jiffies_to_usecs(jiffies-dev->jiffies);
- dev->jiffies=jiffies;
- if (dev->us>=1000000) {
- dev->us-=1000000;
- 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->us+500)/1000);
-
- dprintk(2,"vivifill at %s: Buffer 0x%08lx size= %d\n",dev->timestr,
- (unsigned long)buf->vb.dma.vmalloc,pos);
+ dev->ms += jiffies_to_msecs(jiffies - dev->jiffies);
+ dev->jiffies = jiffies;
+ ms = dev->ms;
+ snprintf(str, sizeof(str), " %02d:%02d:%02d:%03d ",
+ (ms / (60 * 60 * 1000)) % 24,
+ (ms / (60 * 1000)) % 60,
+ (ms / 1000) % 60,
+ ms % 1000);
+ gen_text(dev, vbuf, line++ * 16, 16, str);
+ snprintf(str, sizeof(str), " %dx%d, input %d ",
+ dev->width, dev->height, dev->input);
+ gen_text(dev, vbuf, line++ * 16, 16, str);
+
+ snprintf(str, sizeof(str), " brightness %3d, contrast %3d, saturation %3d, hue %d ",
+ dev->brightness,
+ dev->contrast,
+ dev->saturation,
+ dev->hue);
+ gen_text(dev, vbuf, line++ * 16, 16, str);
+ snprintf(str, sizeof(str), " volume %3d ", dev->volume);
+ gen_text(dev, vbuf, line++ * 16, 16, str);
+
+ dev->mv_count += 2;
/* 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_dev *dev)
{
- struct vivi_buffer *buf;
- struct vivi_dev *dev= container_of(dma_q,struct vivi_dev,vidq);
+ struct vivi_dmaqueue *dma_q = &dev->vidq;
+ struct vivi_buffer *buf;
+ unsigned long flags = 0;
- int bc;
+ dprintk(dev, 1, "Thread tick\n");
- /* 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;
- }
+ 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);
- }
- 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(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);
}
-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_dev *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 (kthread_should_stop())
+ goto stop_task;
- 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;
+ /* Calculate time to wake up */
+ timeout = msecs_to_jiffies(frames_to_ms(1));
- timeout=dma_q->ini_jiffies+msecs_to_jiffies((dma_q->frame*WAKE_NUMERATOR*1000)/WAKE_DENOMINATOR)-jiffies;
+ vivi_thread_tick(dev);
- 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_dev *dev = data;
- dprintk(1,"thread started\n");
+ dprintk(dev, 1, "thread started\n");
+
+ set_freezable();
for (;;) {
- vivi_sleep(dma_q);
+ vivi_sleep(dev);
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 void vivi_start_generating(struct file *file)
{
- dma_q->frame=0;
- dma_q->ini_jiffies=jiffies;
+ struct vivi_dev *dev = video_drvdata(file);
+ struct vivi_dmaqueue *dma_q = &dev->vidq;
- dprintk(1,"%s\n",__FUNCTION__);
- init_waitqueue_head(&dma_q->wq);
+ dprintk(dev, 1, "%s\n", __func__);
- dma_q->kthread = kthread_run(vivi_thread, dma_q, "vivi");
+ if (test_and_set_bit(0, &dev->generating))
+ return;
+ file->private_data = dev;
- if (dma_q->kthread == NULL) {
- printk(KERN_ERR "vivi: kernel_thread() failed\n");
- return -EINVAL;
- }
- dprintk(1,"returning from %s\n",__FUNCTION__);
- return 0;
-}
+ /* Resets frame counters */
+ dev->ms = 0;
+ dev->mv_count = 0;
+ dev->jiffies = jiffies;
-static void vivi_stop_thread(struct vivi_dmaqueue *dma_q)
-{
- dprintk(1,"%s\n",__FUNCTION__);
- /* shutdown control thread */
- if (dma_q->kthread) {
- kthread_stop(dma_q->kthread);
- dma_q->kthread=NULL;
+ dma_q->frame = 0;
+ dma_q->ini_jiffies = jiffies;
+ dma_q->kthread = kthread_run(vivi_thread, dev, dev->v4l2_dev.name);
+
+ if (IS_ERR(dma_q->kthread)) {
+ v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n");
+ clear_bit(0, &dev->generating);
+ return;
}
+ /* Wakes thread */
+ wake_up_interruptible(&dma_q->wq);
+
+ dprintk(dev, 1, "returning from %s\n", __func__);
}
-static int restart_video_queue(struct vivi_dmaqueue *dma_q)
+static void vivi_stop_generating(struct file *file)
{
- struct vivi_buffer *buf, *prev;
- struct list_head *item;
-
- dprintk(1,"%s dma_q=0x%08lx\n",__FUNCTION__,(unsigned long)dma_q);
+ struct vivi_dev *dev = video_drvdata(file);
+ struct vivi_dmaqueue *dma_q = &dev->vidq;
- 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(dev, 1, "%s\n", __func__);
- 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;
- }
+ if (!file->private_data)
+ return;
+ if (!test_and_clear_bit(0, &dev->generating))
+ return;
- 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;
+ /* shutdown control thread */
+ if (dma_q->kthread) {
+ kthread_stop(dma_q->kthread);
+ dma_q->kthread = NULL;
}
+ videobuf_stop(&dev->vb_vidq);
+ videobuf_mmap_free(&dev->vb_vidq);
}
-static void vivi_vid_timeout(unsigned long data)
+static int vivi_is_generating(struct vivi_dev *dev)
{
- 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);
+ return test_bit(0, &dev->generating);
}
/* ------------------------------------------------------------------
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 = vq->priv_data;
- *size = fh->width*fh->height*2;
+ *size = dev->width * dev->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_dev *dev = vq->priv_data;
- if (in_interrupt())
- BUG();
+ dprintk(dev, 1, "%s, state: %i\n", __func__, buf->vb.state);
- /*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
-#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_buffer *buf = container_of(vb,struct vivi_buffer,vb);
- int rc, init_buffer = 0;
+ struct vivi_dev *dev = vq->priv_data;
+ 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)
+ BUG_ON(NULL == dev->fmt);
+
+ if (dev->width < 48 || dev->width > MAX_WIDTH ||
+ dev->height < 32 || dev->height > MAX_HEIGHT)
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;
- }
+ buf->vb.size = dev->width * dev->height * 2;
+ if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
+ return -EINVAL;
- if (STATE_NEEDS_INIT == buf->vb.state) {
- if (0 != (rc = videobuf_iolock(vq,&buf->vb,NULL)))
- goto fail;
- }
+ /* These properties only change when queue is idle, see s_fmt */
+ buf->fmt = dev->fmt;
+ buf->vb.width = dev->width;
+ buf->vb.height = dev->height;
+ buf->vb.field = field;
- buf->vb.state = STATE_PREPARED;
+ precalculate_bars(dev);
+ precalculate_line(dev);
- if (NULL == (buf->to_addr = kmalloc(sizeof(*buf->to_addr) * vb->dma.nr_pages,GFP_KERNEL))) {
- rc=-ENOMEM;
- goto fail;
+ 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);
+ 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_dev *dev = vq->priv_data;
+ struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb);
struct vivi_dmaqueue *vidq = &dev->vidq;
- dprintk(1,"%s\n",__FUNCTION__);
-
- vivi_stop_thread(vidq);
-
- free_buffer(vq,buf);
-}
-
-static int vivi_map_sg(void *dev, struct scatterlist *sg, int nents,
- int direction)
-{
- 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;
- }
+ dprintk(dev, 1, "%s\n", __func__);
- return nents;
+ buf->vb.state = VIDEOBUF_QUEUED;
+ list_add_tail(&buf->vb.queue, &vidq->active);
}
-static int vivi_unmap_sg(void *dev,struct scatterlist *sglist,int nr_pages,
- int direction)
+static void buffer_release(struct videobuf_queue *vq,
+ struct videobuf_buffer *vb)
{
- dprintk(1,"%s\n",__FUNCTION__);
- return 0;
-}
+ struct vivi_dev *dev = vq->priv_data;
+ struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb);
-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)
{
+ struct vivi_dev *dev = video_drvdata(file);
+
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;
+ cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | \
+ V4L2_CAP_READWRITE;
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_dev *dev = video_drvdata(file);
- 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.width = dev->width;
+ f->fmt.pix.height = dev->height;
+ f->fmt.pix.field = dev->vb_vidq.field;
+ f->fmt.pix.pixelformat = dev->fmt->fourcc;
f->fmt.pix.bytesperline =
- (f->fmt.pix.width * fh->fmt->depth) >> 3;
+ (f->fmt.pix.width * dev->fmt->depth) >> 3;
f->fmt.pix.sizeimage =
f->fmt.pix.height * f->fmt.pix.bytesperline;
-
- return (0);
+ 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_dev *dev = video_drvdata(file);
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;
}
- maxw = norm_maxw();
- maxh = norm_maxh();
-
f->fmt.pix.field = field;
- if (f->fmt.pix.height < 32)
- f->fmt.pix.height = 32;
- if (f->fmt.pix.height > maxh)
- f->fmt.pix.height = maxh;
- if (f->fmt.pix.width < 48)
- f->fmt.pix.width = 48;
- if (f->fmt.pix.width > maxw)
- f->fmt.pix.width = maxw;
- f->fmt.pix.width &= ~0x03;
+ v4l_bound_align_image(&f->fmt.pix.width, 48, MAX_WIDTH, 2,
+ &f->fmt.pix.height, 32, MAX_HEIGHT, 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_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_dev *dev = video_drvdata(file);
+ struct videobuf_queue *q = &dev->vb_vidq;
+
+ int ret = vidioc_try_fmt_vid_cap(file, priv, f);
if (ret < 0)
- return (ret);
+ return ret;
- 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;
+ mutex_lock(&q->vb_lock);
- return (0);
+ if (vivi_is_generating(dev)) {
+ dprintk(dev, 1, "%s device busy\n", __func__);
+ ret = -EBUSY;
+ goto out;
+ }
+
+ dev->fmt = get_format(f);
+ dev->width = f->fmt.pix.width;
+ dev->height = f->fmt.pix.height;
+ dev->vb_vidq.field = f->fmt.pix.field;
+ 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_dev *dev = video_drvdata(file);
- return (videobuf_reqbufs(&fh->vb_vidq, p));
+ return videobuf_reqbufs(&dev->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_dev *dev = video_drvdata(file);
- return (videobuf_querybuf(&fh->vb_vidq, p));
+ return videobuf_querybuf(&dev->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_dev *dev = video_drvdata(file);
- return (videobuf_qbuf(&fh->vb_vidq, p));
+ return videobuf_qbuf(&dev->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_dev *dev = video_drvdata(file);
- return (videobuf_dqbuf(&fh->vb_vidq, p,
- file->f_flags & O_NONBLOCK));
+ return videobuf_dqbuf(&dev->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;
-
- req.type = q->type;
- req.count = 8;
- req.memory = V4L2_MEMORY_MMAP;
- ret = videobuf_reqbufs(q,&req);
- if (ret < 0)
- return (ret);
+ struct vivi_dev *dev = video_drvdata(file);
- 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(&dev->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_dev *dev = video_drvdata(file);
+ int ret;
- if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
- if (i != fh->type)
+ if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
+ ret = videobuf_streamon(&dev->vb_vidq);
+ if (ret)
+ return ret;
- if (!res_get(dev,fh))
- return -EBUSY;
- return (videobuf_streamon(&fh->vb_vidq));
+ vivi_start_generating(file);
+ return 0;
}
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_dev *dev = video_drvdata(file);
+ int ret;
- if (fh->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ if (i != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
- if (i != fh->type)
- return -EINVAL;
-
- videobuf_streamoff(&fh->vb_vidq);
- res_free(dev,fh);
-
- return (0);
+ ret = videobuf_streamoff(&dev->vb_vidq);
+ if (!ret)
+ vivi_stop_generating(file);
+ return ret;
}
-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)
+ if (inp->index >= NUM_INPUTS)
return -EINVAL;
inp->type = V4L2_INPUT_TYPE_CAMERA;
- inp->std = V4L2_STD_NTSC_M;
- strcpy(inp->name,"Camera");
-
- return (0);
+ 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)
+static int vidioc_g_input(struct file *file, void *priv, unsigned int *i)
{
- *i = 0;
+ struct vivi_dev *dev = video_drvdata(file);
- return (0);
+ *i = dev->input;
+ 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)
+ struct vivi_dev *dev = video_drvdata(file);
+
+ if (i >= NUM_INPUTS)
return -EINVAL;
- return (0);
+ dev->input = i;
+ precalculate_bars(dev);
+ precalculate_line(dev);
+ return 0;
}
- /* --- controls ---------------------------------------------- */
-static int vidioc_queryctrl (struct file *file, void *priv,
- struct v4l2_queryctrl *qc)
+/* --- 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);
- }
-
+ switch (qc->id) {
+ case V4L2_CID_AUDIO_VOLUME:
+ return v4l2_ctrl_query_fill(qc, 0, 255, 1, 200);
+ case V4L2_CID_BRIGHTNESS:
+ return v4l2_ctrl_query_fill(qc, 0, 255, 1, 127);
+ case V4L2_CID_CONTRAST:
+ return v4l2_ctrl_query_fill(qc, 0, 255, 1, 16);
+ case V4L2_CID_SATURATION:
+ return v4l2_ctrl_query_fill(qc, 0, 255, 1, 127);
+ case V4L2_CID_HUE:
+ return v4l2_ctrl_query_fill(qc, -128, 127, 1, 0);
+ }
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];
- return (0);
- }
+ struct vivi_dev *dev = video_drvdata(file);
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_VOLUME:
+ ctrl->value = dev->volume;
+ return 0;
+ case V4L2_CID_BRIGHTNESS:
+ ctrl->value = dev->brightness;
+ return 0;
+ case V4L2_CID_CONTRAST:
+ ctrl->value = dev->contrast;
+ return 0;
+ case V4L2_CID_SATURATION:
+ ctrl->value = dev->saturation;
+ return 0;
+ case V4L2_CID_HUE:
+ ctrl->value = dev->hue;
+ 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) {
- return (-ERANGE);
- }
- qctl_regs[i]=ctrl->value;
- return (0);
- }
+ struct vivi_dev *dev = video_drvdata(file);
+ struct v4l2_queryctrl qc;
+ int err;
+
+ qc.id = ctrl->id;
+ err = vidioc_queryctrl(file, priv, &qc);
+ if (err < 0)
+ return err;
+ if (ctrl->value < qc.minimum || ctrl->value > qc.maximum)
+ return -ERANGE;
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_VOLUME:
+ dev->volume = ctrl->value;
+ return 0;
+ case V4L2_CID_BRIGHTNESS:
+ dev->brightness = ctrl->value;
+ return 0;
+ case V4L2_CID_CONTRAST:
+ dev->contrast = ctrl->value;
+ return 0;
+ case V4L2_CID_SATURATION:
+ dev->saturation = ctrl->value;
+ return 0;
+ case V4L2_CID_HUE:
+ dev->hue = 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)
-{
- 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 i;
-
- 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;
-
-
-
- /* If more than one user, mutex should be added */
- dev->users++;
-
- dprintk(1,"open minor=%d type=%s users=%d\n",
- minor,v4l2_type_names[type],dev->users);
-
- /* allocate + initialize per filehandle data */
- fh = kzalloc(sizeof(*fh),GFP_KERNEL);
- if (NULL == fh) {
- dev->users--;
- return -ENOMEM;
- }
-
- file->private_data = fh;
- fh->dev = dev;
-
- fh->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- fh->fmt = &format;
- 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));
-
- /* 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);
-
- 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_dev *dev = video_drvdata(file);
- 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,
+ vivi_start_generating(file);
+ return videobuf_read_stream(&dev->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_buffer *buf;
-
- dprintk(1,"%s\n",__FUNCTION__);
-
- 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;
-}
+ struct vivi_dev *dev = video_drvdata(file);
+ struct videobuf_queue *q = &dev->vb_vidq;
-static int vivi_release(struct inode *inode, 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);
+ dprintk(dev, 1, "%s\n", __func__);
- vivi_stop_thread(vidq);
- videobuf_mmap_free(&fh->vb_vidq);
-
- kfree (fh);
+ vivi_start_generating(file);
+ return videobuf_poll_stream(file, q, wait);
+}
- dev->users--;
+static int vivi_close(struct file *file)
+{
+ struct video_device *vdev = video_devdata(file);
+ struct vivi_dev *dev = video_drvdata(file);
- printk(KERN_DEBUG "vivi: close called (minor=%d, users=%d)\n",minor,dev->users);
+ vivi_stop_generating(file);
+ dprintk(dev, 1, "close called (dev=%s)\n",
+ video_device_node_name(vdev));
return 0;
}
-static int
-vivi_mmap(struct file *file, struct vm_area_struct * vma)
+static int vivi_mmap(struct file *file, struct vm_area_struct *vma)
{
- struct vivi_fh *fh = file->private_data;
+ struct vivi_dev *dev = video_drvdata(file);
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(&dev->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,
+ (unsigned long)vma->vm_end - (unsigned long)vma->vm_start,
ret);
-
return ret;
}
-static 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,
.vidioc_enum_input = vidioc_enum_input,
.vidioc_g_input = vidioc_g_input,
.vidioc_s_input = vidioc_s_input,
+ .vidioc_streamon = vidioc_streamon,
+ .vidioc_streamoff = vidioc_streamoff,
.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
- .tvnorms = V4L2_STD_NTSC_M,
+};
+
+static struct video_device vivi_template = {
+ .name = "vivi",
+ .fops = &vivi_fops,
+ .ioctl_ops = &vivi_ioctl_ops,
+ .release = video_device_release,
+
+ .tvnorms = V4L2_STD_525_60,
.current_norm = V4L2_STD_NTSC_M,
};
+
/* -----------------------------------------------------------------
Initialization and module stuff
------------------------------------------------------------------*/
-static int __init vivi_init(void)
+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 %s\n",
+ video_device_node_name(dev->vfd));
+ video_unregister_device(dev->vfd);
+ v4l2_device_unregister(&dev->v4l2_dev);
+ kfree(dev);
+ }
+
+ return 0;
+}
+
+static int __init vivi_create_instance(int inst)
{
- int ret;
struct vivi_dev *dev;
+ struct video_device *vfd;
+ int ret;
- dev = kzalloc(sizeof(*dev),GFP_KERNEL);
- if (NULL == dev)
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
return -ENOMEM;
- list_add_tail(&dev->vivi_devlist,&vivi_devlist);
+
+ 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;
+
+ dev->fmt = &formats[0];
+ dev->width = 640;
+ dev->height = 480;
+ dev->volume = 200;
+ dev->brightness = 127;
+ dev->contrast = 16;
+ dev->saturation = 127;
+ dev->hue = 0;
+
+ videobuf_queue_vmalloc_init(&dev->vb_vidq, &vivi_video_qops,
+ NULL, &dev->slock, V4L2_BUF_TYPE_VIDEO_CAPTURE,
+ V4L2_FIELD_INTERLACED,
+ sizeof(struct vivi_buffer), dev);
/* init video dma queues */
INIT_LIST_HEAD(&dev->vidq.active);
- INIT_LIST_HEAD(&dev->vidq.queued);
+ init_waitqueue_head(&dev->vidq.wq);
/* initialize locks */
- init_MUTEX(&dev->lock);
+ spin_lock_init(&dev->slock);
+ mutex_init(&dev->mutex);
+
+ ret = -ENOMEM;
+ vfd = video_device_alloc();
+ if (!vfd)
+ goto unreg_dev;
- dev->vidq.timeout.function = vivi_vid_timeout;
- dev->vidq.timeout.data = (unsigned long)dev;
- init_timer(&dev->vidq.timeout);
+ *vfd = vivi_template;
+ vfd->debug = debug;
+ vfd->v4l2_dev = &dev->v4l2_dev;
- 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);
+ ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr);
+ if (ret < 0)
+ goto rel_vdev;
+
+ video_set_drvdata(vfd, dev);
+
+ /* Now that everything is fine, let's add it to device list */
+ list_add_tail(&dev->vivi_devlist, &vivi_devlist);
+
+ if (video_nr != -1)
+ video_nr++;
+
+ dev->vfd = vfd;
+ v4l2_info(&dev->v4l2_dev, "V4L2 device registered as %s\n",
+ video_device_node_name(vfd));
+ return 0;
+
+rel_vdev:
+ video_device_release(vfd);
+unreg_dev:
+ v4l2_device_unregister(&dev->v4l2_dev);
+free_dev:
+ kfree(dev);
return ret;
}
-static void __exit vivi_exit(void)
+/* 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)
{
- struct vivi_dev *h;
- struct list_head *list;
+ const struct font_desc *font = find_font("VGA8x16");
+ int ret = 0, i;
- list_for_each(list,&vivi_devlist) {
- h = list_entry(list, struct vivi_dev, vivi_devlist);
- kfree (h);
+ if (font == NULL) {
+ printk(KERN_ERR "vivi: could not find font\n");
+ return -ENODEV;
}
- video_unregister_device(&vivi);
-}
+ font8x16 = font->data;
-module_init(vivi_init);
-module_exit(vivi_exit);
+ if (n_devs <= 0)
+ n_devs = 1;
-MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board");
-MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol");
-MODULE_LICENSE("Dual BSD/GPL");
+ 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;
+ }
+ }
-module_param(video_nr, int, 0);
+ if (ret < 0) {
+ printk(KERN_ERR "vivi: error %d while loading 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;
-module_param_named(debug,vivi.debug, int, 0644);
-MODULE_PARM_DESC(debug,"activates debug info");
+ return ret;
+}
-module_param(vid_limit,int,0644);
-MODULE_PARM_DESC(vid_limit,"capture memory limit in megabytes");
+static void __exit vivi_exit(void)
+{
+ vivi_release();
+}
+module_init(vivi_init);
+module_exit(vivi_exit);