static int msp3400c_detect_stereo(struct i2c_client *client)
{
struct msp_state *state = to_state(i2c_get_clientdata(client));
int val;
int rxsubchans = state->rxsubchans;
int newnicam = state->nicam_on;
int update = 0;
switch (state->mode) {
case MSP_MODE_FM_TERRA:
val = msp_read_dsp(client, 0x18);
if (val > 32767)
val -= 65536;
v4l_dbg(2, msp_debug, client,
"stereo detect register: %d\n", val);
if (val > 8192) {
rxsubchans = V4L2_TUNER_SUB_STEREO;
} else if (val < -4096) {
rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
} else {
rxsubchans = V4L2_TUNER_SUB_MONO;
}
newnicam = 0;
break;
case MSP_MODE_FM_NICAM1:
case MSP_MODE_FM_NICAM2:
case MSP_MODE_AM_NICAM:
val = msp_read_dem(client, 0x23);
v4l_dbg(2, msp_debug, client, "nicam sync=%d, mode=%d\n",
val & 1, (val & 0x1e) >> 1);
if (val & 1) {
/* nicam synced */
switch ((val & 0x1e) >> 1) {
case 0:
case 8:
rxsubchans = V4L2_TUNER_SUB_STEREO;
break;
case 1:
case 9:
rxsubchans = V4L2_TUNER_SUB_MONO;
break;
case 2:
case 10:
rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
break;
default:
rxsubchans = V4L2_TUNER_SUB_MONO;
break;
}
newnicam = 1;
} else {
newnicam = 0;
rxsubchans = V4L2_TUNER_SUB_MONO;
}
break;
}
int autodetect_stereo(struct i2c_client *client)
{
struct msp_state *state = i2c_get_clientdata(client);
int val;
int rxsubchans = state->rxsubchans;
int newnicam = state->nicam_on;
int update = 0;
switch (state->mode) {
case MSP_MODE_FM_TERRA:
val = msp_read_dsp(client, 0x18);
if (val > 32767)
val -= 65536;
v4l_dbg(2, msp_debug, client, "stereo detect register: %d\n", val);
if (val > 4096) {
rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_MONO;
} else if (val < -4096) {
rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
} else {
rxsubchans = V4L2_TUNER_SUB_MONO;
}
newnicam = 0;
break;
case MSP_MODE_FM_NICAM1:
case MSP_MODE_FM_NICAM2:
case MSP_MODE_AM_NICAM:
val = msp_read_dem(client, 0x23);
v4l_dbg(2, msp_debug, client, "nicam sync=%d, mode=%d\n",
val & 1, (val & 0x1e) >> 1);
if (val & 1) {
/* nicam synced */
switch ((val & 0x1e) >> 1) {
case 0:
case 8:
rxsubchans = V4L2_TUNER_SUB_STEREO;
break;
case 1:
case 9:
rxsubchans = V4L2_TUNER_SUB_MONO
| V4L2_TUNER_SUB_LANG1;
break;
case 2:
case 10:
rxsubchans = V4L2_TUNER_SUB_MONO
| V4L2_TUNER_SUB_LANG1
| V4L2_TUNER_SUB_LANG2;
break;
default:
rxsubchans = V4L2_TUNER_SUB_MONO;
break;
}
newnicam = 1;
} else {
newnicam = 0;
rxsubchans = V4L2_TUNER_SUB_MONO;
}
break;
case MSP_MODE_BTSC:
val = msp_read_dem(client, 0x200);
v4l_dbg(2, msp_debug, client, "status=0x%x (pri=%s, sec=%s, %s%s%s)\n",
val,
(val & 0x0002) ? "no" : "yes",
(val & 0x0004) ? "no" : "yes",
(val & 0x0040) ? "stereo" : "mono",
(val & 0x0080) ? ", nicam 2nd mono" : "",
(val & 0x0100) ? ", bilingual/SAP" : "");
rxsubchans = V4L2_TUNER_SUB_MONO;
if (val & 0x0040) rxsubchans |= V4L2_TUNER_SUB_STEREO;
if (val & 0x0100) rxsubchans |= V4L2_TUNER_SUB_LANG1;
break;
}
