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_command (struct i2c_client *client,
unsigned int cmd,
void *arg)
{
struct saa7110 *decoder = i2c_get_clientdata(client);
int v;
switch (cmd) {
case 0:
//saa7110_write_block(client, initseq, sizeof(initseq));
break;
case DECODER_GET_CAPABILITIES:
{
struct video_decoder_capability *dc = arg;
dc->flags =
VIDEO_DECODER_PAL | VIDEO_DECODER_NTSC |
VIDEO_DECODER_SECAM | VIDEO_DECODER_AUTO;
dc->inputs = SAA7110_MAX_INPUT;
dc->outputs = SAA7110_MAX_OUTPUT;
}
break;
case DECODER_GET_STATUS:
{
int status;
int res = 0;
status = saa7110_read(client);
dprintk(1, KERN_INFO "%s: status=0x%02x norm=%d\n",
I2C_NAME(client), status, decoder->norm);
if (!(status & 0x40))
res |= DECODER_STATUS_GOOD;
if (status & 0x03)
res |= DECODER_STATUS_COLOR;
switch (decoder->norm) {
case VIDEO_MODE_NTSC:
res |= DECODER_STATUS_NTSC;
break;
case VIDEO_MODE_PAL:
res |= DECODER_STATUS_PAL;
break;
case VIDEO_MODE_SECAM:
res |= DECODER_STATUS_SECAM;
break;
}
*(int *) arg = res;
}
break;
case DECODER_SET_NORM:
v = *(int *) arg;
if (decoder->norm != v) {
decoder->norm = v;
//saa7110_write(client, 0x06, 0x03);
switch (v) {
case VIDEO_MODE_NTSC:
saa7110_write(client, 0x0D, 0x86);
saa7110_write(client, 0x0F, 0x50);
saa7110_write(client, 0x11, 0x2C);
//saa7110_write(client, 0x2E, 0x81);
dprintk(1,
KERN_INFO "%s: switched to NTSC\n",
I2C_NAME(client));
break;
case VIDEO_MODE_PAL:
saa7110_write(client, 0x0D, 0x86);
saa7110_write(client, 0x0F, 0x10);
saa7110_write(client, 0x11, 0x59);
//saa7110_write(client, 0x2E, 0x9A);
dprintk(1,
KERN_INFO "%s: switched to PAL\n",
I2C_NAME(client));
break;
case VIDEO_MODE_SECAM:
saa7110_write(client, 0x0D, 0x87);
saa7110_write(client, 0x0F, 0x10);
saa7110_write(client, 0x11, 0x59);
//saa7110_write(client, 0x2E, 0x9A);
dprintk(1,
KERN_INFO
"%s: switched to SECAM\n",
I2C_NAME(client));
break;
case VIDEO_MODE_AUTO:
dprintk(1,
KERN_INFO
"%s: TV standard detection...\n",
I2C_NAME(client));
decoder->norm = determine_norm(client);
*(int *) arg = decoder->norm;
break;
default:
return -EPERM;
}
}
break;
case DECODER_SET_INPUT:
v = *(int *) arg;
if (v < 0 || v > SAA7110_MAX_INPUT) {
dprintk(1,
KERN_INFO "%s: input=%d not available\n",
I2C_NAME(client), v);
return -EINVAL;
}
if (decoder->input != v) {
saa7110_selmux(client, v);
dprintk(1, KERN_INFO "%s: switched to input=%d\n",
I2C_NAME(client), v);
}
break;
case DECODER_SET_OUTPUT:
v = *(int *) arg;
/* not much choice of outputs */
if (v != 0)
return -EINVAL;
break;
case DECODER_ENABLE_OUTPUT:
v = *(int *) arg;
if (decoder->enable != v) {
decoder->enable = v;
saa7110_write(client, 0x0E, v ? 0x18 : 0x80);
dprintk(1, KERN_INFO "%s: YUV %s\n", I2C_NAME(client),
v ? "on" : "off");
}
break;
case DECODER_SET_PICTURE:
{
struct video_picture *pic = arg;
if (decoder->bright != pic->brightness) {
/* We want 0 to 255 we get 0-65535 */
decoder->bright = pic->brightness;
saa7110_write(client, 0x19, decoder->bright >> 8);
}
if (decoder->contrast != pic->contrast) {
/* We want 0 to 127 we get 0-65535 */
decoder->contrast = pic->contrast;
saa7110_write(client, 0x13,
decoder->contrast >> 9);
}
if (decoder->sat != pic->colour) {
/* We want 0 to 127 we get 0-65535 */
decoder->sat = pic->colour;
saa7110_write(client, 0x12, decoder->sat >> 9);
}
static
int saa7110_command(struct i2c_device *device, unsigned int cmd, void *arg)
{
struct saa7110* decoder = device->data;
int v;
switch (cmd) {
case DECODER_GET_CAPABILITIES:
{
struct video_decoder_capability *dc = arg;
dc->flags = VIDEO_DECODER_PAL
| VIDEO_DECODER_NTSC
| VIDEO_DECODER_SECAM
| VIDEO_DECODER_AUTO
| VIDEO_DECODER_CCIR;
dc->inputs = SAA7110_MAX_INPUT;
dc->outputs = SAA7110_MAX_OUTPUT;
}
break;
case DECODER_GET_STATUS:
{
struct saa7110* decoder = device->data;
int status;
int res = 0;
status = i2c_read(device->bus,device->addr|1);
if (status & 0x40)
res |= DECODER_STATUS_GOOD;
if (status & 0x03)
res |= DECODER_STATUS_COLOR;
switch (decoder->norm) {
case VIDEO_MODE_NTSC:
res |= DECODER_STATUS_NTSC;
break;
case VIDEO_MODE_PAL:
res |= DECODER_STATUS_PAL;
break;
case VIDEO_MODE_SECAM:
res |= DECODER_STATUS_SECAM;
break;
}
*(int*)arg = res;
}
break;
case DECODER_SET_NORM:
v = *(int*)arg;
if (decoder->norm != v) {
decoder->norm = v;
saa7110_write(decoder, 0x06, 0x00);
switch (v) {
case VIDEO_MODE_NTSC:
saa7110_write(decoder, 0x0D, 0x06);
saa7110_write(decoder, 0x11, 0x2C);
saa7110_write(decoder, 0x30, 0x81);
saa7110_write(decoder, 0x2A, 0xDF);
break;
case VIDEO_MODE_PAL:
saa7110_write(decoder, 0x0D, 0x06);
saa7110_write(decoder, 0x11, 0x59);
saa7110_write(decoder, 0x2E, 0x9A);
break;
case VIDEO_MODE_SECAM:
saa7110_write(decoder, 0x0D, 0x07);
saa7110_write(decoder, 0x11, 0x59);
saa7110_write(decoder, 0x2E, 0x9A);
break;
case VIDEO_MODE_AUTO:
*(int*)arg = determine_norm(device);
break;
default:
return -EPERM;
}
}
break;
case DECODER_SET_INPUT:
v = *(int*)arg;
if (v<0 || v>SAA7110_MAX_INPUT)
return -EINVAL;
if (decoder->input != v) {
decoder->input = v;
saa7110_selmux(device, v);
}
break;
case DECODER_SET_OUTPUT:
v = *(int*)arg;
/* not much choice of outputs */
if (v != 0)
return -EINVAL;
break;
case DECODER_ENABLE_OUTPUT:
v = *(int*)arg;
if (decoder->enable != v) {
decoder->enable = v;
saa7110_write(decoder,0x0E, v ? 0x18 : 0x00);
}
break;
case DECODER_SET_PICTURE:
{
struct video_picture *pic = arg;
if (decoder->bright != pic->brightness) {
/* We want 0 to 255 we get 0-65535 */
decoder->bright = pic->brightness;
saa7110_write(decoder, 0x19, decoder->bright >> 8);
}
if (decoder->contrast != pic->contrast) {
/* We want 0 to 127 we get 0-65535 */
decoder->contrast = pic->contrast;
saa7110_write(decoder, 0x13, decoder->contrast >> 9);
}
if (decoder->sat != pic->colour) {
/* We want 0 to 127 we get 0-65535 */
decoder->sat = pic->colour;
saa7110_write(decoder, 0x12, decoder->sat >> 9);
}