static int determine_norm(struct i2c_client *client) { DEFINE_WAIT(wait); struct saa7110 *decoder = i2c_get_clientdata(client); int status; /* mode changed, start automatic detection */ saa7110_write_block(client, initseq, sizeof(initseq)); saa7110_selmux(client, decoder->input); prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE); schedule_timeout(msecs_to_jiffies(250)); finish_wait(&decoder->wq, &wait); status = saa7110_read(client); if (status & 0x40) { v4l_dbg(1, debug, client, "status=0x%02x (no signal)\n", status); return decoder->norm; // no change } if ((status & 3) == 0) { saa7110_write(client, 0x06, 0x83); if (status & 0x20) { v4l_dbg(1, debug, client, "status=0x%02x (NTSC/no color)\n", status); //saa7110_write(client,0x2E,0x81); return VIDEO_MODE_NTSC; } v4l_dbg(1, debug, client, "status=0x%02x (PAL/no color)\n", status); //saa7110_write(client,0x2E,0x9A); return VIDEO_MODE_PAL; } //saa7110_write(client,0x06,0x03); if (status & 0x20) { /* 60Hz */ v4l_dbg(1, debug, client, "status=0x%02x (NTSC)\n", status); saa7110_write(client, 0x0D, 0x86); saa7110_write(client, 0x0F, 0x50); saa7110_write(client, 0x11, 0x2C); //saa7110_write(client,0x2E,0x81); return VIDEO_MODE_NTSC; } /* 50Hz -> PAL/SECAM */ saa7110_write(client, 0x0D, 0x86); saa7110_write(client, 0x0F, 0x10); saa7110_write(client, 0x11, 0x59); //saa7110_write(client,0x2E,0x9A); prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE); schedule_timeout(msecs_to_jiffies(250)); finish_wait(&decoder->wq, &wait); status = saa7110_read(client); if ((status & 0x03) == 0x01) { v4l_dbg(1, debug, client, "status=0x%02x (SECAM)\n", status); saa7110_write(client, 0x0D, 0x87); return VIDEO_MODE_SECAM; } v4l_dbg(1, debug, client, "status=0x%02x (PAL)\n", status); return VIDEO_MODE_PAL; }
static int saa7110_attach(struct i2c_device *device) { static const unsigned char initseq[] = { 0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF0, 0x00, 0x00, 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x06, 0x18, 0x90, 0x00, 0x2C, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA, 0xF0, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xD9, 0x17, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F, 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x81, 0x03, 0x40, 0x75, 0x01, 0x8C, 0x03 }; struct saa7110* decoder; int rv; device->data = decoder = kmalloc(sizeof(struct saa7110), GFP_KERNEL); if (device->data == 0) return -ENOMEM; MOD_INC_USE_COUNT; /* clear our private data */ memset(decoder, 0, sizeof(struct saa7110)); strcpy(device->name, "saa7110"); decoder->bus = device->bus; decoder->addr = device->addr; decoder->norm = VIDEO_MODE_PAL; decoder->input = 0; decoder->enable = 1; decoder->bright = 32768; decoder->contrast = 32768; decoder->hue = 32768; decoder->sat = 32768; rv = saa7110_write_block(decoder, initseq, sizeof(initseq)); if (rv < 0) printk(KERN_ERR "%s_attach: init status %d\n", device->name, rv); else { saa7110_write(decoder,0x21,0x16); saa7110_write(decoder,0x0D,0x04); DEBUG(printk(KERN_INFO "%s_attach: chip version %x\n", device->name, saa7110_read(decoder))); saa7110_write(decoder,0x0D,0x06); } /* setup and implicit mode 0 select has been performed */ return 0; }