* 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>
+#include <linux/kthread.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20)
+#include <linux/freezer.h>
#endif
-#include <linux/interrupt.h>
#include <media/videobuf-vmalloc.h>
-#include <media/v4l2-common.h>
+#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
-#include <linux/kthread.h>
-#include <linux/highmem.h>
-#include <linux/freezer.h>
+#include <media/v4l2-common.h>
#define VIVI_MODULE_NAME "vivi"
#define WAKE_DENOMINATOR 1001
#define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */
-#include "font.h"
+#define MAX_WIDTH 1920
+#define MAX_HEIGHT 1200
#define VIVI_MAJOR_VERSION 0
-#define VIVI_MINOR_VERSION 5
+#define VIVI_MINOR_VERSION 7
#define VIVI_RELEASE 0
#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 int video_nr = -1; /* /dev/videoN, -1 for autodetect */
-static int n_devs = 1; /* Number of virtual devices */
+MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board");
+MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol");
+MODULE_LICENSE("Dual BSD/GPL");
+
+static unsigned video_nr = -1;
+module_param(video_nr, uint, 0644);
+MODULE_PARM_DESC(video_nr, "videoX start number, -1 is autodetect");
-/* 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 unsigned int vid_limit = 16;
+module_param(vid_limit, uint, 0644);
+MODULE_PARM_DESC(vid_limit, "capture memory limit in megabytes");
-static int qctl_regs[ARRAY_SIZE(vivi_qctrl)];
+/* Global font descriptor */
+static const u8 *font8x16;
-#define dprintk(dev, level, fmt, arg...) \
- do { \
- if (dev->vfd->debug >= (level)) \
- printk(KERN_DEBUG "vivi: " fmt , ## arg); \
- } while (0)
+#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 vivi_dev {
struct list_head vivi_devlist;
+ struct v4l2_device v4l2_dev;
+
+ /* controls */
+ int brightness;
+ int contrast;
+ int saturation;
+ int hue;
+ int volume;
spinlock_t slock;
struct mutex mutex;
- int users;
-
/* various device info */
struct video_device *vfd;
struct vivi_dmaqueue vidq;
/* Several counters */
- int h, m, s, ms;
+ unsigned ms;
unsigned long jiffies;
- char timestr[13];
int mv_count; /* Controls bars movement */
-};
-struct vivi_fh {
- struct vivi_dev *dev;
+ /* Input Number */
+ int input;
/* video capture */
struct vivi_fmt *fmt;
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,
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}, /* black */
+/* 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 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_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)
+/* precalculate color bar values to speed up rendering */
+static void precalculate_bars(struct vivi_dev *dev)
{
- int w, i, j, y;
- int pos = inipos;
- char *p, *s;
- u8 chr, r, g, b, color;
+ 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;
+ }
+
+ 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;
+ }
+ }
+}
- /* We will just duplicate the second pixel at the packet */
- wmax /= 2;
+#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)
- /* Generate a standard color bar pattern */
- for (w = 0; w < wmax; w++) {
- int colorpos = ((w + count) * 8/(wmax + 1)) % 8;
- r = bars[colorpos][0];
- g = bars[colorpos][1];
- b = bars[colorpos][2];
+static void gen_twopix(struct vivi_dev *dev, u8 *buf, int colorpos)
+{
+ u8 r_y, g_u, b_v;
+ int color;
+ u8 *p;
- for (color = 0; color < 4; color++) {
- p = basep + pos;
+ 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 */
+ 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 = TO_Y(r, g, b); /* Luma */
+ *p = r_y;
break;
case 1:
- *p = TO_U(r, g, b); /* Cb */
+ *p = g_u;
break;
case 3:
- *p = TO_V(r, g, b); /* Cr */
+ *p = b_v;
break;
}
- pos++;
+ 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;
}
}
+}
- /* Checks if it is possible to show timestamp */
- if (TSTAMP_MAX_Y >= hmax)
- goto end;
- if (TSTAMP_MIN_X + strlen(timestr) >= wmax)
- goto end;
+static void precalculate_line(struct vivi_dev *dev)
+{
+ int w;
+
+ 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 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 = 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;
-
- y = TO_Y(r, g, b);
-
- switch (color) {
- 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++;
- }
- 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:
- return;
}
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;
+ int hmax = buf->vb.height;
+ int wmax = buf->vb.width;
struct timeval ts;
- char *tmpbuf;
void *vbuf = videobuf_to_vmalloc(&buf->vb);
+ unsigned ms;
+ char str[100];
+ int h, line = 1;
if (!vbuf)
return;
- tmpbuf = kmalloc(wmax * 2, GFP_ATOMIC);
- if (!tmpbuf)
- return;
-
- for (h = 0; h < hmax; h++) {
- gen_line(tmpbuf, 0, wmax, hmax, h, dev->mv_count,
- dev->timestr);
- memcpy(vbuf + pos, tmpbuf, wmax * 2);
- pos += wmax*2;
- }
-
- dev->mv_count++;
-
- kfree(tmpbuf);
+ for (h = 0; h < hmax; h++)
+ memcpy(vbuf + h * wmax * 2, dev->line + (dev->mv_count % wmax) * 2, wmax * 2);
/* Updates stream time */
- dev->ms += jiffies_to_msecs(jiffies-dev->jiffies);
+ dev->ms += jiffies_to_msecs(jiffies - dev->jiffies);
dev->jiffies = jiffies;
- if (dev->ms >= 1000) {
- dev->ms -= 1000;
- dev->s++;
- if (dev->s >= 60) {
- dev->s -= 60;
- dev->m++;
- if (dev->m > 60) {
- dev->m -= 60;
- dev->h++;
- if (dev->h > 24)
- dev->h -= 24;
- }
- }
- }
- sprintf(dev->timestr, "%02d:%02d:%02d:%03d",
- dev->h, dev->m, dev->s, dev->ms);
-
- dprintk(dev, 2, "vivifill at %s: Buffer 0x%08lx size= %d\n",
- dev->timestr, (unsigned long)tmpbuf, pos);
+ 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.field_count++;
buf->vb.state = VIDEOBUF_DONE;
}
-static void vivi_thread_tick(struct vivi_fh *fh)
+static void vivi_thread_tick(struct vivi_dev *dev)
{
- struct vivi_buffer *buf;
- struct vivi_dev *dev = fh->dev;
struct vivi_dmaqueue *dma_q = &dev->vidq;
-
+ struct vivi_buffer *buf;
unsigned long flags = 0;
dprintk(dev, 1, "Thread tick\n");
dprintk(dev, 2, "[%p/%d] wakeup\n", buf, buf->vb. i);
unlock:
spin_unlock_irqrestore(&dev->slock, flags);
- return;
}
#define frames_to_ms(frames) \
((frames * WAKE_NUMERATOR * 1000) / WAKE_DENOMINATOR)
-static void vivi_sleep(struct vivi_fh *fh)
+static void vivi_sleep(struct vivi_dev *dev)
{
- struct vivi_dev *dev = fh->dev;
struct vivi_dmaqueue *dma_q = &dev->vidq;
int timeout;
DECLARE_WAITQUEUE(wait, current);
/* Calculate time to wake up */
timeout = msecs_to_jiffies(frames_to_ms(1));
- vivi_thread_tick(fh);
+ vivi_thread_tick(dev);
schedule_timeout_interruptible(timeout);
static int vivi_thread(void *data)
{
- struct vivi_fh *fh = data;
- struct vivi_dev *dev = fh->dev;
+ struct vivi_dev *dev = data;
dprintk(dev, 1, "thread started\n");
set_freezable();
for (;;) {
- vivi_sleep(fh);
+ vivi_sleep(dev);
if (kthread_should_stop())
break;
return 0;
}
-static int vivi_start_thread(struct vivi_fh *fh)
+static void vivi_start_generating(struct file *file)
{
- struct vivi_dev *dev = fh->dev;
+ struct vivi_dev *dev = video_drvdata(file);
struct vivi_dmaqueue *dma_q = &dev->vidq;
- dma_q->frame = 0;
- dma_q->ini_jiffies = jiffies;
-
dprintk(dev, 1, "%s\n", __func__);
- dma_q->kthread = kthread_run(vivi_thread, fh, "vivi");
+ if (test_and_set_bit(0, &dev->generating))
+ return;
+ file->private_data = dev;
+
+ /* Resets frame counters */
+ dev->ms = 0;
+ dev->mv_count = 0;
+ dev->jiffies = jiffies;
+
+ 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)) {
- printk(KERN_ERR "vivi: kernel_thread() failed\n");
- return PTR_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__);
- return 0;
}
-static void vivi_stop_thread(struct vivi_dmaqueue *dma_q)
+static void vivi_stop_generating(struct file *file)
{
- struct vivi_dev *dev = container_of(dma_q, struct vivi_dev, vidq);
+ struct vivi_dev *dev = video_drvdata(file);
+ struct vivi_dmaqueue *dma_q = &dev->vidq;
dprintk(dev, 1, "%s\n", __func__);
+
+ if (!file->private_data)
+ return;
+ if (!test_and_clear_bit(0, &dev->generating))
+ return;
+
/* 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 int vivi_is_generating(struct vivi_dev *dev)
+{
+ 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 = fh->dev;
+ struct vivi_dev *dev = vq->priv_data;
- *size = fh->width*fh->height*2;
+ *size = dev->width * dev->height * 2;
if (0 == *count)
*count = 32;
static void free_buffer(struct videobuf_queue *vq, struct vivi_buffer *buf)
{
- struct vivi_fh *fh = vq->priv_data;
- struct vivi_dev *dev = fh->dev;
+ struct vivi_dev *dev = vq->priv_data;
dprintk(dev, 1, "%s, state: %i\n", __func__, buf->vb.state);
- if (in_interrupt())
- BUG();
-
videobuf_vmalloc_free(&buf->vb);
dprintk(dev, 1, "free_buffer: freed\n");
buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
-#define norm_maxw() 1024
-#define norm_maxh() 768
static int
buffer_prepare(struct videobuf_queue *vq, struct videobuf_buffer *vb,
enum v4l2_field field)
{
- struct vivi_fh *fh = vq->priv_data;
- struct vivi_dev *dev = fh->dev;
+ struct vivi_dev *dev = vq->priv_data;
struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb);
int rc;
dprintk(dev, 1, "%s, field=%d\n", __func__, field);
- BUG_ON(NULL == fh->fmt);
+ BUG_ON(NULL == dev->fmt);
- if (fh->width < 48 || fh->width > norm_maxw() ||
- fh->height < 32 || fh->height > norm_maxh())
+ if (dev->width < 48 || dev->width > MAX_WIDTH ||
+ dev->height < 32 || dev->height > MAX_HEIGHT)
return -EINVAL;
- buf->vb.size = fh->width*fh->height*2;
- if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
+ buf->vb.size = dev->width * dev->height * 2;
+ if (0 != buf->vb.baddr && buf->vb.bsize < buf->vb.size)
return -EINVAL;
/* These properties only change when queue is idle, see s_fmt */
- buf->fmt = fh->fmt;
- buf->vb.width = fh->width;
- buf->vb.height = fh->height;
+ buf->fmt = dev->fmt;
+ buf->vb.width = dev->width;
+ buf->vb.height = dev->height;
buf->vb.field = field;
+ precalculate_bars(dev);
+ precalculate_line(dev);
+
if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
rc = videobuf_iolock(vq, &buf->vb, NULL);
if (rc < 0)
}
buf->vb.state = VIDEOBUF_PREPARED;
-
return 0;
fail:
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_dev *dev = vq->priv_data;
+ struct vivi_buffer *buf = container_of(vb, struct vivi_buffer, vb);
struct vivi_dmaqueue *vidq = &dev->vidq;
dprintk(dev, 1, "%s\n", __func__);
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);
dprintk(dev, 1, "%s\n", __func__);
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_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_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_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
- struct vivi_fh *fh = priv;
- struct vivi_dev *dev = fh->dev;
+ 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(dev, 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;
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_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
- struct vivi_fh *fh = priv;
- struct videobuf_queue *q = &fh->vb_vidq;
+ struct vivi_dev *dev = video_drvdata(file);
+ struct videobuf_queue *q = &dev->vb_vidq;
- int ret = vidioc_try_fmt_vid_cap(file, fh, f);
+ int ret = vidioc_try_fmt_vid_cap(file, priv, f);
if (ret < 0)
- return (ret);
+ return ret;
mutex_lock(&q->vb_lock);
- if (videobuf_queue_is_busy(&fh->vb_vidq)) {
- dprintk(fh->dev, 1, "%s queue busy\n", __func__);
+ if (vivi_is_generating(dev)) {
+ dprintk(dev, 1, "%s device 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;
-
+ 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);
+ return ret;
}
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)
{
- 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)
{
- 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)
{
- 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)
{
- struct vivi_fh *fh = priv;
+ struct vivi_dev *dev = video_drvdata(file);
- return videobuf_cgmbuf(&fh->vb_vidq, mbuf, 8);
+ 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 = 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;
- 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 = 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;
-
- return videobuf_streamoff(&fh->vb_vidq);
+ 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_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_525_60;
- strcpy(inp->name, "Camera");
-
- return (0);
+ sprintf(inp->name, "Camera %u", inp->index);
+ return 0;
}
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)
{
- 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 ---------------------------------------------- */
+/* --- 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)
{
- 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,
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 *dev;
- struct vivi_fh *fh = NULL;
- int i;
- int retval = 0;
-
- 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;
-
-found:
- mutex_lock(&dev->mutex);
- 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);
- if (NULL == fh) {
- dev->users--;
- 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->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;
-
- /* Resets frame counters */
- dev->h = 0;
- dev->m = 0;
- dev->s = 0;
- dev->ms = 0;
- dev->mv_count = 0;
- dev->jiffies = jiffies;
- sprintf(dev->timestr, "%02d:%02d:%02d:%03d",
- dev->h, dev->m, dev->s, dev->ms);
-
- videobuf_queue_vmalloc_init(&fh->vb_vidq, &vivi_video_qops,
- NULL, &dev->slock, fh->type, V4L2_FIELD_INTERLACED,
- sizeof(struct vivi_buffer), fh);
-
- vivi_start_thread(fh);
- 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_dev *dev = video_drvdata(file);
- if (fh->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
- return videobuf_read_stream(&fh->vb_vidq, data, count, ppos, 0,
+ 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_dev *dev = fh->dev;
- struct videobuf_queue *q = &fh->vb_vidq;
+ struct vivi_dev *dev = video_drvdata(file);
+ struct videobuf_queue *q = &dev->vb_vidq;
dprintk(dev, 1, "%s\n", __func__);
- if (V4L2_BUF_TYPE_VIDEO_CAPTURE != fh->type)
- return POLLERR;
-
+ vivi_start_generating(file);
return videobuf_poll_stream(file, q, wait);
}
-static int vivi_close(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);
-
- vivi_stop_thread(vidq);
- videobuf_stop(&fh->vb_vidq);
- videobuf_mmap_free(&fh->vb_vidq);
-
- kfree(fh);
-
- mutex_lock(&dev->mutex);
- dev->users--;
- mutex_unlock(&dev->mutex);
-
- dprintk(dev, 1, "close called (minor=%d, users=%d)\n",
- minor, dev->users);
-
- return 0;
-}
-
-static int vivi_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);
-
- if (-1 != dev->vfd->minor) {
- printk(KERN_INFO "%s: unregistering /dev/video%d\n",
- VIVI_MODULE_NAME, dev->vfd->minor);
- video_unregister_device(dev->vfd);
- } else {
- printk(KERN_INFO "%s: releasing /dev/video%d\n",
- VIVI_MODULE_NAME, dev->vfd->minor);
- video_device_release(dev->vfd);
- }
+ struct video_device *vdev = video_devdata(file);
+ struct vivi_dev *dev = video_drvdata(file);
- kfree(dev);
- }
+ 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)
{
- struct vivi_fh *fh = file->private_data;
- struct vivi_dev *dev = fh->dev;
+ struct vivi_dev *dev = video_drvdata(file);
int ret;
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(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 const struct file_operations vivi_fops = {
+static const struct v4l2_file_operations vivi_fops = {
.owner = THIS_MODULE,
- .open = vivi_open,
.release = vivi_close,
.read = vivi_read,
.poll = vivi_poll,
.ioctl = video_ioctl2, /* V4L2 ioctl handler */
- .compat_ioctl = v4l_compat_ioctl32,
.mmap = vivi_mmap,
- .llseek = no_llseek,
};
static const struct v4l2_ioctl_ops vivi_ioctl_ops = {
.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
.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.
+static int vivi_release(void)
+{
+ struct vivi_dev *dev;
+ struct list_head *list;
- 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)
+ 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 = -ENOMEM, i;
struct vivi_dev *dev;
struct video_device *vfd;
+ int ret;
- if (n_devs <= 0)
- n_devs = 1;
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ snprintf(dev->v4l2_dev.name, sizeof(dev->v4l2_dev.name),
+ "%s-%03d", VIVI_MODULE_NAME, inst);
+ ret = v4l2_device_register(NULL, &dev->v4l2_dev);
+ if (ret)
+ goto free_dev;
+
+ 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_waitqueue_head(&dev->vidq.wq);
+
+ /* initialize locks */
+ spin_lock_init(&dev->slock);
+ mutex_init(&dev->mutex);
+
+ ret = -ENOMEM;
+ vfd = video_device_alloc();
+ if (!vfd)
+ goto unreg_dev;
+
+ *vfd = vivi_template;
+ vfd->debug = debug;
+ vfd->v4l2_dev = &dev->v4l2_dev;
+
+ ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr);
+ if (ret < 0)
+ goto rel_vdev;
- for (i = 0; i < n_devs; i++) {
- dev = kzalloc(sizeof(*dev), GFP_KERNEL);
- if (!dev)
- break;
+ video_set_drvdata(vfd, dev);
- /* init video dma queues */
- INIT_LIST_HEAD(&dev->vidq.active);
- init_waitqueue_head(&dev->vidq.wq);
+ /* Now that everything is fine, let's add it to device list */
+ list_add_tail(&dev->vivi_devlist, &vivi_devlist);
- /* initialize locks */
- spin_lock_init(&dev->slock);
- mutex_init(&dev->mutex);
+ if (video_nr != -1)
+ video_nr++;
- vfd = video_device_alloc();
- if (!vfd) {
- kfree(dev);
- break;
- }
+ 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;
+}
+
+/* This routine allocates from 1 to n_devs virtual drivers.
- *vfd = vivi_template;
+ 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)
+{
+ const struct font_desc *font = find_font("VGA8x16");
+ int ret = 0, i;
- ret = video_register_device(vfd, VFL_TYPE_GRABBER, video_nr);
- if (ret < 0) {
- video_device_release(vfd);
- kfree(dev);
+ if (font == NULL) {
+ printk(KERN_ERR "vivi: could not find font\n");
+ return -ENODEV;
+ }
+ font8x16 = font->data;
- /* If some registers succeeded, keep driver */
+ if (n_devs <= 0)
+ n_devs = 1;
+
+ for (i = 0; i < n_devs; i++) {
+ ret = vivi_create_instance(i);
+ if (ret) {
+ /* If some instantiations succeeded, keep driver */
if (i)
ret = 0;
-
break;
}
-
- /* 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->minor);
}
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 "
+ 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;
- }
+ /* n_devs will reflect the actual number of allocated devices */
+ n_devs = i;
return ret;
}
module_init(vivi_init);
module_exit(vivi_exit);
-
-MODULE_DESCRIPTION("Video Technology Magazine Virtual Video Capture Board");
-MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol");
-MODULE_LICENSE("Dual BSD/GPL");
-
-module_param(video_nr, uint, 0444);
-MODULE_PARM_DESC(video_nr, "video iminor start number");
-
-module_param(n_devs, uint, 0444);
-MODULE_PARM_DESC(n_devs, "number of video devices to create");
-
-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