/* * Programming the mspx4xx sound processor family * * (c) 1997-2001 Gerd Knorr * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #include #include #include #include #include #include #include #include #include #include "msp3400-driver.h" /* this one uses the automatic sound standard detection of newer msp34xx chip versions */ static struct { int retval; int main, second; char *name; } msp_stdlist[] = { { 0x0000, 0, 0, "could not detect sound standard" }, { 0x0001, 0, 0, "autodetect start" }, { 0x0002, MSP_CARRIER(4.5), MSP_CARRIER(4.72), "4.5/4.72 M Dual FM-Stereo" }, { 0x0003, MSP_CARRIER(5.5), MSP_CARRIER(5.7421875), "5.5/5.74 B/G Dual FM-Stereo" }, { 0x0004, MSP_CARRIER(6.5), MSP_CARRIER(6.2578125), "6.5/6.25 D/K1 Dual FM-Stereo" }, { 0x0005, MSP_CARRIER(6.5), MSP_CARRIER(6.7421875), "6.5/6.74 D/K2 Dual FM-Stereo" }, { 0x0006, MSP_CARRIER(6.5), MSP_CARRIER(6.5), "6.5 D/K FM-Mono (HDEV3)" }, { 0x0007, MSP_CARRIER(6.5), MSP_CARRIER(5.7421875), "6.5/5.74 D/K3 Dual FM-Stereo" }, { 0x0008, MSP_CARRIER(5.5), MSP_CARRIER(5.85), "5.5/5.85 B/G NICAM FM" }, { 0x0009, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 L NICAM AM" }, { 0x000a, MSP_CARRIER(6.0), MSP_CARRIER(6.55), "6.0/6.55 I NICAM FM" }, { 0x000b, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM" }, { 0x000c, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM (HDEV2)" }, { 0x000d, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM (HDEV3)" }, { 0x0020, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M BTSC-Stereo" }, { 0x0021, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M BTSC-Mono + SAP" }, { 0x0030, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M EIA-J Japan Stereo" }, { 0x0040, MSP_CARRIER(10.7), MSP_CARRIER(10.7), "10.7 FM-Stereo Radio" }, { 0x0050, MSP_CARRIER(6.5), MSP_CARRIER(6.5), "6.5 SAT-Mono" }, { 0x0051, MSP_CARRIER(7.02), MSP_CARRIER(7.20), "7.02/7.20 SAT-Stereo" }, { 0x0060, MSP_CARRIER(7.2), MSP_CARRIER(7.2), "7.2 SAT ADR" }, { -1, 0, 0, NULL }, /* EOF */ }; static struct msp3400c_init_data_dem { int fir1[6]; int fir2[6]; int cdo1; int cdo2; int ad_cv; int mode_reg; int dsp_src; int dsp_matrix; } msp3400c_init_data[] = { { /* AM (for carrier detect / msp3400) */ {75, 19, 36, 35, 39, 40}, {75, 19, 36, 35, 39, 40}, MSP_CARRIER(5.5), MSP_CARRIER(5.5), 0x00d0, 0x0500, 0x0020, 0x3000 }, { /* AM (for carrier detect / msp3410) */ {-1, -1, -8, 2, 59, 126}, {-1, -1, -8, 2, 59, 126}, MSP_CARRIER(5.5), MSP_CARRIER(5.5), 0x00d0, 0x0100, 0x0020, 0x3000 }, { /* FM Radio */ {-8, -8, 4, 6, 78, 107}, {-8, -8, 4, 6, 78, 107}, MSP_CARRIER(10.7), MSP_CARRIER(10.7), 0x00d0, 0x0480, 0x0020, 0x3000 }, { /* Terrestial FM-mono + FM-stereo */ {3, 18, 27, 48, 66, 72}, {3, 18, 27, 48, 66, 72}, MSP_CARRIER(5.5), MSP_CARRIER(5.5), 0x00d0, 0x0480, 0x0030, 0x3000 }, { /* Sat FM-mono */ { 1, 9, 14, 24, 33, 37}, { 3, 18, 27, 48, 66, 72}, MSP_CARRIER(6.5), MSP_CARRIER(6.5), 0x00c6, 0x0480, 0x0000, 0x3000 }, { /* NICAM/FM -- B/G (5.5/5.85), D/K (6.5/5.85) */ {-2, -8, -10, 10, 50, 86}, {3, 18, 27, 48, 66, 72}, MSP_CARRIER(5.5), MSP_CARRIER(5.5), 0x00d0, 0x0040, 0x0120, 0x3000 }, { /* NICAM/FM -- I (6.0/6.552) */ {2, 4, -6, -4, 40, 94}, {3, 18, 27, 48, 66, 72}, MSP_CARRIER(6.0), MSP_CARRIER(6.0), 0x00d0, 0x0040, 0x0120, 0x3000 }, { /* NICAM/AM -- L (6.5/5.85) */ {-2, -8, -10, 10, 50, 86}, {-4, -12, -9, 23, 79, 126}, MSP_CARRIER(6.5), MSP_CARRIER(6.5), 0x00c6, 0x0140, 0x0120, 0x7c00 }, }; struct msp3400c_carrier_detect { int cdo; char *name; }; static struct msp3400c_carrier_detect msp3400c_carrier_detect_main[] = { /* main carrier */ { MSP_CARRIER(4.5), "4.5 NTSC" }, { MSP_CARRIER(5.5), "5.5 PAL B/G" }, { MSP_CARRIER(6.0), "6.0 PAL I" }, { MSP_CARRIER(6.5), "6.5 PAL D/K + SAT + SECAM" } }; static struct msp3400c_carrier_detect msp3400c_carrier_detect_55[] = { /* PAL B/G */ { MSP_CARRIER(5.7421875), "5.742 PAL B/G FM-stereo" }, { MSP_CARRIER(5.85), "5.85 PAL B/G NICAM" } }; static struct msp3400c_carrier_detect msp3400c_carrier_detect_65[] = { /* PAL SAT / SECAM */ { MSP_CARRIER(5.85), "5.85 PAL D/K + SECAM NICAM" }, { MSP_CARRIER(6.2578125), "6.25 PAL D/K1 FM-stereo" }, { MSP_CARRIER(6.7421875), "6.74 PAL D/K2 FM-stereo" }, { MSP_CARRIER(7.02), "7.02 PAL SAT FM-stereo s/b" }, { MSP_CARRIER(7.20), "7.20 PAL SAT FM-stereo s" }, { MSP_CARRIER(7.38), "7.38 PAL SAT FM-stereo b" }, }; /* ------------------------------------------------------------------------ */ const char *msp_standard_std_name(int std) { int i; for (i = 0; msp_stdlist[i].name != NULL; i++) if (msp_stdlist[i].retval == std) return msp_stdlist[i].name; return "unknown"; } static void msp_set_source(struct i2c_client *client, u16 src) { struct msp_state *state = to_state(i2c_get_clientdata(client)); if (msp_dolby) { msp_write_dsp(client, 0x0008, 0x0520); /* I2S1 */ msp_write_dsp(client, 0x0009, 0x0620); /* I2S2 */ } else { msp_write_dsp(client, 0x0008, src); msp_write_dsp(client, 0x0009, src); } msp_write_dsp(client, 0x000a, src); msp_write_dsp(client, 0x000b, src); msp_write_dsp(client, 0x000c, src); if (state->has_scart2_out) msp_write_dsp(client, 0x0041, src); } void msp3400c_set_carrier(struct i2c_client *client, int cdo1, int cdo2) { msp_write_dem(client, 0x0093, cdo1 & 0xfff); msp_write_dem(client, 0x009b, cdo1 >> 12); msp_write_dem(client, 0x00a3, cdo2 & 0xfff); msp_write_dem(client, 0x00ab, cdo2 >> 12); msp_write_dem(client, 0x0056, 0); /* LOAD_REG_1/2 */ } void msp3400c_set_mode(struct i2c_client *client, int mode) { struct msp_state *state = to_state(i2c_get_clientdata(client)); struct msp3400c_init_data_dem *data = &msp3400c_init_data[mode]; int tuner = (state->route_in >> 3) & 1; int i; v4l_dbg(1, msp_debug, client, "set_mode: %d\n", mode); state->mode = mode; state->rxsubchans = V4L2_TUNER_SUB_MONO; msp_write_dem(client, 0x00bb, data->ad_cv | (tuner ? 0x100 : 0)); for (i = 5; i >= 0; i--) /* fir 1 */ msp_write_dem(client, 0x0001, data->fir1[i]); msp_write_dem(client, 0x0005, 0x0004); /* fir 2 */ msp_write_dem(client, 0x0005, 0x0040); msp_write_dem(client, 0x0005, 0x0000); for (i = 5; i >= 0; i--) msp_write_dem(client, 0x0005, data->fir2[i]); msp_write_dem(client, 0x0083, data->mode_reg); msp3400c_set_carrier(client, data->cdo1, data->cdo2); msp_set_source(client, data->dsp_src); /* set prescales */ /* volume prescale for SCART (AM mono input) */ msp_write_dsp(client, 0x000d, 0x1900); msp_write_dsp(client, 0x000e, data->dsp_matrix); if (state->has_nicam) /* nicam prescale */ msp_write_dsp(client, 0x0010, 0x5a00); } /* Set audio mode. Note that the pre-'G' models do not support BTSC+SAP, nor do they support stereo BTSC. */ static void msp3400c_set_audmode(struct i2c_client *client) { static char *strmode[] = { "mono", "stereo", "lang2", "lang1", "lang1+lang2" }; struct msp_state *state = to_state(i2c_get_clientdata(client)); char *modestr = (state->audmode >= 0 && state->audmode < 5) ? strmode[state->audmode] : "unknown"; int src = 0; /* channel source: FM/AM, nicam or SCART */ int audmode = state->audmode; if (state->opmode == OPMODE_AUTOSELECT) { /* this method would break everything, let's make sure * it's never called */ v4l_dbg(1, msp_debug, client, "set_audmode called with mode=%d instead of set_source (ignored)\n", state->audmode); return; } /* Note: for the C and D revs no NTSC stereo + SAP is possible as the hardware does not support SAP. So the rxsubchans combination of STEREO | LANG2 does not occur. */ if (state->mode != MSP_MODE_EXTERN) { /* switch to mono if only mono is available */ if (state->rxsubchans == V4L2_TUNER_SUB_MONO) audmode = V4L2_TUNER_MODE_MONO; /* if bilingual */ else if (state->rxsubchans & V4L2_TUNER_SUB_LANG2) { /* and mono or stereo, then fallback to lang1 */ if (audmode == V4L2_TUNER_MODE_MONO || audmode == V4L2_TUNER_MODE_STEREO) audmode = V4L2_TUNER_MODE_LANG1; } /* if stereo, and audmode is not mono, then switch to stereo */ else if (audmode != V4L2_TUNER_MODE_MONO) audmode = V4L2_TUNER_MODE_STEREO; } /* switch demodulator */ switch (state->mode) { case MSP_MODE_FM_TERRA: v4l_dbg(1, msp_debug, client, "FM set_audmode: %s\n", modestr); switch (audmode) { case V4L2_TUNER_MODE_STEREO: msp_write_dsp(client, 0x000e, 0x3001); break; case V4L2_TUNER_MODE_MONO: case V4L2_TUNER_MODE_LANG1: case V4L2_TUNER_MODE_LANG2: case V4L2_TUNER_MODE_LANG1_LANG2: msp_write_dsp(client, 0x000e, 0x3000); break; } break; case MSP_MODE_FM_SAT: v4l_dbg(1, msp_debug, client, "SAT set_audmode: %s\n", modestr); switch (audmode) { case V4L2_TUNER_MODE_MONO: msp3400c_set_carrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5)); break; case V4L2_TUNER_MODE_STEREO: case V4L2_TUNER_MODE_LANG1_LANG2: msp3400c_set_carrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02)); break; case V4L2_TUNER_MODE_LANG1: msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02)); break; case V4L2_TUNER_MODE_LANG2: msp3400c_set_carrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02)); break; } break; case MSP_MODE_FM_NICAM1: case MSP_MODE_FM_NICAM2: case MSP_MODE_AM_NICAM: v4l_dbg(1, msp_debug, client, "NICAM set_audmode: %s\n", modestr); if (state->nicam_on) src = 0x0100; /* NICAM */ break; case MSP_MODE_BTSC: v4l_dbg(1, msp_debug, client, "BTSC set_audmode: %s\n", modestr); break; case MSP_MODE_EXTERN: v4l_dbg(1, msp_debug, client, "extern set_audmode: %s\n", modestr); src = 0x0200; /* SCART */ break; case MSP_MODE_FM_RADIO: v4l_dbg(1, msp_debug, client, "FM-Radio set_audmode: %s\n", modestr); break; default: v4l_dbg(1, msp_debug, client, "mono set_audmode\n"); return; } /* switch audio */ v4l_dbg(1, msp_debug, client, "set audmode %d\n", audmode); switch (audmode) { case V4L2_TUNER_MODE_STEREO: case V4L2_TUNER_MODE_LANG1_LANG2: src |= 0x0020; break; case V4L2_TUNER_MODE_MONO: if (state->mode == MSP_MODE_AM_NICAM) { v4l_dbg(1, msp_debug, client, "switching to AM mono\n"); /* AM mono decoding is handled by tuner, not MSP chip */ /* SCART switching control register */ msp_set_scart(client, SCART_MONO, 0); src = 0x0200; break; } if (state->rxsubchans & V4L2_TUNER_SUB_STEREO) src = 0x0030; break; case V4L2_TUNER_MODE_LANG1: break; case V4L2_TUNER_MODE_LANG2: src |= 0x0010; break; } v4l_dbg(1, msp_debug, client, "set_audmode final source/matrix = 0x%x\n", src); msp_set_source(client, src); } static void msp3400c_print_mode(struct i2c_client *client) { struct msp_state *state = to_state(i2c_get_clientdata(client)); if (state->main == state->second) v4l_dbg(1, msp_debug, client, "mono sound carrier: %d.%03d MHz\n", state->main / 910000, (state->main / 910) % 1000); else v4l_dbg(1, msp_debug, client, "main sound carrier: %d.%03d MHz\n", state->main / 910000, (state->main / 910) % 1000); if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2) v4l_dbg(1, msp_debug, client, "NICAM/FM carrier : %d.%03d MHz\n", state->second / 910000, (state->second/910) % 1000); if (state->mode == MSP_MODE_AM_NICAM) v4l_dbg(1, msp_debug, client, "NICAM/AM carrier : %d.%03d MHz\n", state->second / 910000, (state->second / 910) % 1000); if (state->mode == MSP_MODE_FM_TERRA && state->main != state->second) { v4l_dbg(1, msp_debug, client, "FM-stereo carrier : %d.%03d MHz\n", state->second / 910000, (state->second / 910) % 1000); } } /* ----------------------------------------------------------------------- */ 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; } if (rxsubchans != state->rxsubchans) { update = 1; v4l_dbg(1, msp_debug, client, "watch: rxsubchans %02x => %02x\n", state->rxsubchans, rxsubchans); state->rxsubchans = rxsubchans; } if (newnicam != state->nicam_on) { update = 1; v4l_dbg(1, msp_debug, client, "watch: nicam %d => %d\n", state->nicam_on, newnicam); state->nicam_on = newnicam; } return update; } /* * A kernel thread for msp3400 control -- we don't want to block the * in the ioctl while doing the sound carrier & stereo detect */ /* stereo/multilang monitoring */ static void watch_stereo(struct i2c_client *client) { struct msp_state *state = to_state(i2c_get_clientdata(client)); if (msp_detect_stereo(client)) msp_set_audmode(client); if (msp_once) state->watch_stereo = 0; } int msp3400c_thread(void *data) { struct i2c_client *client = data; struct msp_state *state = to_state(i2c_get_clientdata(client)); struct msp3400c_carrier_detect *cd; int count, max1, max2, val1, val2, val, i; v4l_dbg(1, msp_debug, client, "msp3400 daemon started\n"); set_freezable(); for (;;) { v4l_dbg(2, msp_debug, client, "msp3400 thread: sleep\n"); msp_sleep(state, -1); v4l_dbg(2, msp_debug, client, "msp3400 thread: wakeup\n"); restart: v4l_dbg(2, msp_debug, client, "thread: restart scan\n"); state->restart = 0; if (kthread_should_stop()) break; if (state->radio || MSP_MODE_EXTERN == state->mode) { /* no carrier scan, just unmute */ v4l_dbg(1, msp_debug, client, "thread: no carrier scan\n"); state->scan_in_progress = 0; msp_set_audio(client); continue; } /* mute audio */ state->scan_in_progress = 1; msp_set_audio(client); msp3400c_set_mode(client, MSP_MODE_AM_DETECT); val1 = val2 = 0; max1 = max2 = -1; state->watch_stereo = 0; state->nicam_on = 0; /* wait for tuner to settle down after a channel change */ if (msp_sleep(state, 200)) goto restart; /* carrier detect pass #1 -- main carrier */ cd = msp3400c_carrier_detect_main; count = ARRAY_SIZE(msp3400c_carrier_detect_main); if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) { /* autodetect doesn't work well with AM ... */ max1 = 3; count = 0; v4l_dbg(1, msp_debug, client, "AM sound override\n"); } for (i = 0; i < count; i++) { msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo); if (msp_sleep(state, 100)) goto restart; val = msp_read_dsp(client, 0x1b); if (val > 32767) val -= 65536; if (val1 < val) val1 = val, max1 = i; v4l_dbg(1, msp_debug, client, "carrier1 val: %5d / %s\n", val, cd[i].name); } /* carrier detect pass #2 -- second (stereo) carrier */ switch (max1) { case 1: /* 5.5 */ cd = msp3400c_carrier_detect_55; count = ARRAY_SIZE(msp3400c_carrier_detect_55); break; case 3: /* 6.5 */ cd = msp3400c_carrier_detect_65; count = ARRAY_SIZE(msp3400c_carrier_detect_65); break; case 0: /* 4.5 */ case 2: /* 6.0 */ default: cd = NULL; count = 0; break; } if (msp_amsound && (state->v4l2_std & V4L2_STD_SECAM)) { /* autodetect doesn't work well with AM ... */ cd = NULL; count = 0; max2 = 0; } for (i = 0; i < count; i++) { msp3400c_set_carrier(client, cd[i].cdo, cd[i].cdo); if (msp_sleep(state, 100)) goto restart; val = msp_read_dsp(client, 0x1b); if (val > 32767) val -= 65536; if (val2 < val) val2 = val, max2 = i; v4l_dbg(1, msp_debug, client, "carrier2 val: %5d / %s\n", val, cd[i].name); } /* program the msp3400 according to the results */ state->main = msp3400c_carrier_detect_main[max1].cdo; switch (max1) { case 1: /* 5.5 */ if (max2 == 0) { /* B/G FM-stereo */ state->second = msp3400c_carrier_detect_55[max2].cdo; msp3400c_set_mode(client, MSP_MODE_FM_TERRA); state->watch_stereo = 1; } else if (max2 == 1 && state->has_nicam) { /* B/G NICAM */ state->second = msp3400c_carrier_detect_55[max2].cdo; msp3400c_set_mode(client, MSP_MODE_FM_NICAM1); state->nicam_on = 1; state->watch_stereo = 1; } else { goto no_second; } break; case 2: /* 6.0 */ /* PAL I NICAM */ state->second = MSP_CARRIER(6.552); msp3400c_set_mode(client, MSP_MODE_FM_NICAM2); state->nicam_on = 1; state->watch_stereo = 1; break; case 3: /* 6.5 */ if (max2 == 1 || max2 == 2) { /* D/K FM-stereo */ state->second = msp3400c_carrier_detect_65[max2].cdo; msp3400c_set_mode(client, MSP_MODE_FM_TERRA); state->watch_stereo = 1; } else if (max2 == 0 && (state->v4l2_std & V4L2_STD_SECAM)) { /* L NICAM or AM-mono */ state->second = msp3400c_carrier_detect_65[max2].cdo; msp3400c_set_mode(client, MSP_MODE_AM_NICAM); state->watch_stereo = 1; } else if (max2 == 0 && state->has_nicam) { /* D/K NICAM */ state->second = msp3400c_carrier_detect_65[max2].cdo; msp3400c_set_mode(client, MSP_MODE_FM_NICAM1); state->nicam_on = 1; state->watch_stereo = 1; } else { goto no_second; } break; case 0: /* 4.5 */ default: no_second: state->second = msp3400c_carrier_detect_main[max1].cdo; msp3400c_set_mode(client, MSP_MODE_FM_TERRA); break; } msp3400c_set_carrier(client, state->second, state->main); /* unmute */ state->scan_in_progress = 0; msp3400c_set_audmode(client); msp_set_audio(client); if (msp_debug) msp3400c_print_mode(client); /* monitor tv audio mode, the first time don't wait so long to get a quick stereo/bilingual result */ count = 3; while (state->watch_stereo) { if (msp_sleep(state, count ? 1000 : 5000)) goto restart; if (count) count--; watch_stereo(client); } } v4l_dbg(1, msp_debug, client, "thread: exit\n"); return 0; } int msp3410d_thread(void *data) { struct i2c_client *client = data; struct msp_state *state = to_state(i2c_get_clientdata(client)); int val, i, std, count; v4l_dbg(1, msp_debug, client, "msp3410 daemon started\n"); set_freezable(); for (;;) { v4l_dbg(2, msp_debug, client, "msp3410 thread: sleep\n"); msp_sleep(state, -1); v4l_dbg(2, msp_debug, client, "msp3410 thread: wakeup\n"); restart: v4l_dbg(2, msp_debug, client, "thread: restart scan\n"); state->restart = 0; if (kthread_should_stop()) break; if (state->mode == MSP_MODE_EXTERN) { /* no carrier scan needed, just unmute */ v4l_dbg(1, msp_debug, client, "thread: no carrier scan\n"); state->scan_in_progress = 0; msp_set_audio(client); continue; } /* mute audio */ state->scan_in_progress = 1; msp_set_audio(client); /* start autodetect. Note: autodetect is not supported for NTSC-M and radio, hence we force the standard in those cases. */ if (state->radio) std = 0x40; else std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1; state->watch_stereo = 0; state->nicam_on = 0; /* wait for tuner to settle down after a channel change */ if (msp_sleep(state, 200)) goto restart; if (msp_debug) v4l_dbg(2, msp_debug, client, "setting standard: %s (0x%04x)\n", msp_standard_std_name(std), std); if (std != 1) { /* programmed some specific mode */ val = std; } else { /* triggered autodetect */ msp_write_dem(client, 0x20, std); for (;;) { if (msp_sleep(state, 100)) goto restart; /* check results */ val = msp_read_dem(client, 0x7e); if (val < 0x07ff) break; v4l_dbg(2, msp_debug, client, "detection still in progress\n"); } } for (i = 0; msp_stdlist[i].name != NULL; i++) if (msp_stdlist[i].retval == val) break; v4l_dbg(1, msp_debug, client, "current standard: %s (0x%04x)\n", msp_standard_std_name(val), val); state->main = msp_stdlist[i].main; state->second = msp_stdlist[i].second; state->std = val; state->rxsubchans = V4L2_TUNER_SUB_MONO; if (msp_amsound && !state->radio && (state->v4l2_std & V4L2_STD_SECAM) && (val != 0x0009)) { /* autodetection has failed, let backup */ v4l_dbg(1, msp_debug, client, "autodetection failed," " switching to backup standard: %s (0x%04x)\n", msp_stdlist[8].name ? msp_stdlist[8].name : "unknown", val); state->std = val = 0x0009; msp_write_dem(client, 0x20, val); } /* set stereo */ switch (val) { case 0x0008: /* B/G NICAM */ case 0x000a: /* I NICAM */ case 0x000b: /* D/K NICAM */ if (val == 0x000a) state->mode = MSP_MODE_FM_NICAM2; else state->mode = MSP_MODE_FM_NICAM1; /* just turn on stereo */ state->nicam_on = 1; state->watch_stereo = 1; break; case 0x0009: state->mode = MSP_MODE_AM_NICAM; state->nicam_on = 1; state->watch_stereo = 1; break; case 0x0020: /* BTSC */ /* The pre-'G' models only have BTSC-mono */ state->mode = MSP_MODE_BTSC; break; case 0x0040: /* FM radio */ state->mode = MSP_MODE_FM_RADIO; state->rxsubchans = V4L2_TUNER_SUB_STEREO; /* not needed in theory if we have radio, but short programming enables carrier mute */ msp3400c_set_mode(client, MSP_MODE_FM_RADIO); msp3400c_set_carrier(client, MSP_CARRIER(10.7), MSP_CARRIER(10.7)); break; case 0x0002: case 0x0003: case 0x0004: case 0x0005: state->mode = MSP_MODE_FM_TERRA; state->watch_stereo = 1; break; } /* set various prescales */ msp_write_dsp(client, 0x0d, 0x1900); /* scart */ msp_write_dsp(client, 0x0e, 0x3000); /* FM */ if (state->has_nicam) msp_write_dsp(client, 0x10, 0x5a00); /* nicam */ if (state->has_i2s_conf) msp_write_dem(client, 0x40, state->i2s_mode); /* unmute */ msp3400c_set_audmode(client); state->scan_in_progress = 0; msp_set_audio(client); /* monitor tv audio mode, the first time don't wait so long to get a quick stereo/bilingual result */ count = 3; while (state->watch_stereo) { if (msp_sleep(state, count ? 1000 : 5000)) goto restart; if (count) count--; watch_stereo(client); } } v4l_dbg(1, msp_debug, client, "thread: exit\n"); return 0; } /* ----------------------------------------------------------------------- */ /* msp34xxG + (autoselect no-thread) * this one uses both automatic standard detection and automatic sound * select which are available in the newer G versions * struct msp: only norm, acb and source are really used in this mode */ static int msp34xxg_modus(struct i2c_client *client) { struct msp_state *state = to_state(i2c_get_clientdata(client)); if (state->radio) { v4l_dbg(1, msp_debug, client, "selected radio modus\n"); return 0x0001; } if (state->v4l2_std == V4L2_STD_NTSC_M_JP) { v4l_dbg(1, msp_debug, client, "selected M (EIA-J) modus\n"); return 0x4001; } if (state->v4l2_std == V4L2_STD_NTSC_M_KR) { v4l_dbg(1, msp_debug, client, "selected M (A2) modus\n"); return 0x0001; } if (state->v4l2_std == V4L2_STD_SECAM_L) { v4l_dbg(1, msp_debug, client, "selected SECAM-L modus\n"); return 0x6001; } if (state->v4l2_std & V4L2_STD_MN) { v4l_dbg(1, msp_debug, client, "selected M (BTSC) modus\n"); return 0x2001; } return 0x7001; } static void msp34xxg_set_source(struct i2c_client *client, u16 reg, int in) { struct msp_state *state = to_state(i2c_get_clientdata(client)); int source, matrix; switch (state->audmode) { case V4L2_TUNER_MODE_MONO: source = 0; /* mono only */ matrix = 0x30; break; case V4L2_TUNER_MODE_LANG2: source = 4; /* stereo or B */ matrix = 0x10; break; case V4L2_TUNER_MODE_LANG1_LANG2: source = 1; /* stereo or A|B */ matrix = 0x20; break; case V4L2_TUNER_MODE_LANG1: source = 3; /* stereo or A */ matrix = 0x00; break; case V4L2_TUNER_MODE_STEREO: default: source = 3; /* stereo or A */ matrix = 0x20; break; } if (in == MSP_DSP_IN_TUNER) source = (source << 8) | 0x20; /* the msp34x2g puts the MAIN_AVC, MAIN and AUX sources in 12, 13, 14 instead of 11, 12, 13. So we add one for that msp version. */ else if (in >= MSP_DSP_IN_MAIN_AVC && state->has_dolby_pro_logic) source = ((in + 1) << 8) | matrix; else source = (in << 8) | matrix; v4l_dbg(1, msp_debug, client, "set source to %d (0x%x) for output %02x\n", in, source, reg); msp_write_dsp(client, reg, source); } static void msp34xxg_set_sources(struct i2c_client *client) { struct msp_state *state = to_state(i2c_get_clientdata(client)); u32 in = state->route_in; msp34xxg_set_source(client, 0x0008, (in >> 4) & 0xf); /* quasi-peak detector is set to same input as the loudspeaker (MAIN) */ msp34xxg_set_source(client, 0x000c, (in >> 4) & 0xf); msp34xxg_set_source(client, 0x0009, (in >> 8) & 0xf); msp34xxg_set_source(client, 0x000a, (in >> 12) & 0xf); if (state->has_scart2_out) msp34xxg_set_source(client, 0x0041, (in >> 16) & 0xf); msp34xxg_set_source(client, 0x000b, (in >> 20) & 0xf); } /* (re-)initialize the msp34xxg */ static void msp34xxg_reset(struct i2c_client *client) { struct msp_state *state = to_state(i2c_get_clientdata(client)); int tuner = (state->route_in >> 3) & 1; int modus; /* initialize std to 1 (autodetect) to signal that no standard is selected yet. */ state->std = 1; msp_reset(client); if (state->has_i2s_conf) msp_write_dem(client, 0x40, state->i2s_mode); /* step-by-step initialisation, as described in the manual */ modus = msp34xxg_modus(client); modus |= tuner ? 0x100 : 0; msp_write_dem(client, 0x30, modus); /* write the dsps that may have an influence on standard/audio autodetection right now */ msp34xxg_set_sources(client); msp_write_dsp(client, 0x0d, 0x1900); /* scart */ msp_write_dsp(client, 0x0e, 0x3000); /* FM */ if (state->has_nicam) msp_write_dsp(client, 0x10, 0x5a00); /* nicam */ /* set identification threshold. Personally, I * I set it to a higher value than the default * of 0x190 to ignore noisy stereo signals. * this needs tuning. (recommended range 0x00a0-0x03c0) * 0x7f0 = forced mono mode * * a2 threshold for stereo/bilingual. * Note: this register is part of the Manual/Compatibility mode. * It is supported by all 'G'-family chips. */ msp_write_dem(client, 0x22, msp_stereo_thresh); } int msp34xxg_thread(void *data) { struct i2c_client *client = data; struct msp_state *state = to_state(i2c_get_clientdata(client)); int val, i; v4l_dbg(1, msp_debug, client, "msp34xxg daemon started\n"); set_freezable(); for (;;) { v4l_dbg(2, msp_debug, client, "msp34xxg thread: sleep\n"); msp_sleep(state, -1); v4l_dbg(2, msp_debug, client, "msp34xxg thread: wakeup\n"); restart: v4l_dbg(1, msp_debug, client, "thread: restart scan\n"); state->restart = 0; if (kthread_should_stop()) break; if (state->mode == MSP_MODE_EXTERN) { /* no carrier scan needed, just unmute */ v4l_dbg(1, msp_debug, client, "thread: no carrier scan\n"); state->scan_in_progress = 0; msp_set_audio(client); continue; } /* setup the chip*/ msp34xxg_reset(client); state->std = state->radio ? 0x40 : (state->force_btsc && msp_standard == 1) ? 32 : msp_standard; msp_write_dem(client, 0x20, state->std); /* start autodetect */ if (state->std != 1) goto unmute; /* watch autodetect */ v4l_dbg(1, msp_debug, client, "started autodetect, waiting for result\n"); for (i = 0; i < 10; i++) { if (msp_sleep(state, 100)) goto restart; /* check results */ val = msp_read_dem(client, 0x7e); if (val < 0x07ff) { state->std = val; break; } v4l_dbg(2, msp_debug, client, "detection still in progress\n"); } if (state->std == 1) { v4l_dbg(1, msp_debug, client, "detection still in progress after 10 tries. giving up.\n"); continue; } unmute: v4l_dbg(1, msp_debug, client, "detected standard: %s (0x%04x)\n", msp_standard_std_name(state->std), state->std); if (state->std == 9) { /* AM NICAM mode */ msp_write_dsp(client, 0x0e, 0x7c00); } /* unmute: dispatch sound to scart output, set scart volume */ msp_set_audio(client); /* restore ACB */ if (msp_write_dsp(client, 0x13, state->acb)) return -1; /* the periodic stereo/SAP check is only relevant for the 0x20 standard (BTSC) */ if (state->std != 0x20) continue; state->watch_stereo = 1; /* monitor tv audio mode, the first time don't wait in order to get a quick stereo/SAP update */ watch_stereo(client); while (state->watch_stereo) { watch_stereo(client); if (msp_sleep(state, 5000)) goto restart; } } v4l_dbg(1, msp_debug, client, "thread: exit\n"); return 0; } static int msp34xxg_detect_stereo(struct i2c_client *client) { struct msp_state *state = to_state(i2c_get_clientdata(client)); int status = msp_read_dem(client, 0x0200); int is_bilingual = status & 0x100; int is_stereo = status & 0x40; int oldrx = state->rxsubchans; if (state->mode == MSP_MODE_EXTERN) return 0; state->rxsubchans = 0; if (is_stereo) state->rxsubchans = V4L2_TUNER_SUB_STEREO; else state->rxsubchans = V4L2_TUNER_SUB_MONO; if (is_bilingual) { if (state->std == 0x20) state->rxsubchans |= V4L2_TUNER_SUB_SAP; else state->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; } v4l_dbg(1, msp_debug, client, "status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n", status, is_stereo, is_bilingual, state->rxsubchans); return (oldrx != state->rxsubchans); } static void msp34xxg_set_audmode(struct i2c_client *client) { struct msp_state *state = to_state(i2c_get_clientdata(client)); if (state->std == 0x20) { if ((state->rxsubchans & V4L2_TUNER_SUB_SAP) && (state->audmode == V4L2_TUNER_MODE_LANG1_LANG2 || state->audmode == V4L2_TUNER_MODE_LANG2)) { msp_write_dem(client, 0x20, 0x21); } else { msp_write_dem(client, 0x20, 0x20); } } msp34xxg_set_sources(client); } void msp_set_audmode(struct i2c_client *client) { struct msp_state *state = to_state(i2c_get_clientdata(client)); switch (state->opmode) { case OPMODE_MANUAL: case OPMODE_AUTODETECT: msp3400c_set_audmode(client); break; case OPMODE_AUTOSELECT: msp34xxg_set_audmode(client); break; } } int msp_detect_stereo(struct i2c_client *client) { struct msp_state *state = to_state(i2c_get_clientdata(client)); switch (state->opmode) { case OPMODE_MANUAL: case OPMODE_AUTODETECT: return msp3400c_detect_stereo(client); case OPMODE_AUTOSELECT: return msp34xxg_detect_stereo(client); } return 0; }