/* * 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 #include "msp3400.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)" }, { 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)" }, { 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, 0x7c03 }, }; 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"; } void msp3400c_setcarrier(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_setmode(struct i2c_client *client, int type) { struct msp_state *state = i2c_get_clientdata(client); int i; v4l_dbg(1, msp_debug, client, "setmode: %d\n", type); state->mode = type; state->audmode = V4L2_TUNER_MODE_MONO; state->rxsubchans = V4L2_TUNER_SUB_MONO; msp_write_dem(client, 0x00bb, msp3400c_init_data[type].ad_cv); for (i = 5; i >= 0; i--) /* fir 1 */ msp_write_dem(client, 0x0001, msp3400c_init_data[type].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, msp3400c_init_data[type].fir2[i]); msp_write_dem(client, 0x0083, msp3400c_init_data[type].mode_reg); msp3400c_setcarrier(client, msp3400c_init_data[type].cdo1, msp3400c_init_data[type].cdo2); msp_write_dem(client, 0x0056, 0); /*LOAD_REG_1/2*/ if (msp_dolby) { msp_write_dsp(client, 0x0008, 0x0520); /* I2S1 */ msp_write_dsp(client, 0x0009, 0x0620); /* I2S2 */ msp_write_dsp(client, 0x000b, msp3400c_init_data[type].dsp_src); } else { msp_write_dsp(client, 0x0008, msp3400c_init_data[type].dsp_src); msp_write_dsp(client, 0x0009, msp3400c_init_data[type].dsp_src); msp_write_dsp(client, 0x000b, msp3400c_init_data[type].dsp_src); } msp_write_dsp(client, 0x000a, msp3400c_init_data[type].dsp_src); msp_write_dsp(client, 0x000e, msp3400c_init_data[type].dsp_matrix); if (state->has_nicam) { /* nicam prescale */ msp_write_dsp(client, 0x0010, 0x5a00); /* was: 0x3000 */ } } /* turn on/off nicam + stereo */ void msp3400c_setstereo(struct i2c_client *client, int mode) { static char *strmode[] = { "mono", "stereo", "lang2", "lang1" }; struct msp_state *state = i2c_get_clientdata(client); int nicam = 0; /* channel source: FM/AM or nicam */ int src = 0; if (state->opmode == OPMODE_AUTOSELECT) { /* this method would break everything, let's make sure * it's never called */ v4l_dbg(1, msp_debug, client, "setstereo called with mode=%d instead of set_source (ignored)\n", mode); return; } /* switch demodulator */ switch (state->mode) { case MSP_MODE_FM_TERRA: v4l_dbg(1, msp_debug, client, "FM setstereo: %s\n", strmode[mode]); msp3400c_setcarrier(client, state->second, state->main); switch (mode) { 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: msp_write_dsp(client, 0x000e, 0x3000); break; } break; case MSP_MODE_FM_SAT: v4l_dbg(1, msp_debug, client, "SAT setstereo: %s\n", strmode[mode]); switch (mode) { case V4L2_TUNER_MODE_MONO: msp3400c_setcarrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5)); break; case V4L2_TUNER_MODE_STEREO: msp3400c_setcarrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02)); break; case V4L2_TUNER_MODE_LANG1: msp3400c_setcarrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02)); break; case V4L2_TUNER_MODE_LANG2: msp3400c_setcarrier(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 setstereo: %s\n",strmode[mode]); msp3400c_setcarrier(client,state->second,state->main); if (state->nicam_on) nicam=0x0100; break; case MSP_MODE_BTSC: v4l_dbg(1, msp_debug, client, "BTSC setstereo: %s\n",strmode[mode]); nicam=0x0300; break; case MSP_MODE_EXTERN: v4l_dbg(1, msp_debug, client, "extern setstereo: %s\n",strmode[mode]); nicam = 0x0200; break; case MSP_MODE_FM_RADIO: v4l_dbg(1, msp_debug, client, "FM-Radio setstereo: %s\n",strmode[mode]); break; default: v4l_dbg(1, msp_debug, client, "mono setstereo\n"); return; } /* switch audio */ switch (mode) { case V4L2_TUNER_MODE_STEREO: src = 0x0020 | nicam; 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; } case V4L2_TUNER_MODE_LANG1: src = 0x0000 | nicam; break; case V4L2_TUNER_MODE_LANG2: src = 0x0010 | nicam; break; } v4l_dbg(1, msp_debug, client, "setstereo final source/matrix = 0x%x\n", src); if (msp_dolby) { msp_write_dsp(client, 0x0008, 0x0520); msp_write_dsp(client, 0x0009, 0x0620); msp_write_dsp(client, 0x000a, src); msp_write_dsp(client, 0x000b, src); } 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_scart23_in_scart2_out) msp_write_dsp(client, 0x0041, src); } } static void msp3400c_print_mode(struct i2c_client *client) { struct msp_state *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); } } /* ----------------------------------------------------------------------- */ 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; } if (rxsubchans != state->rxsubchans) { update = 1; v4l_dbg(1, msp_debug, client, "watch: rxsubchans %d => %d\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 = i2c_get_clientdata(client); if (autodetect_stereo(client)) { if (state->rxsubchans & V4L2_TUNER_SUB_STEREO) msp3400c_setstereo(client, V4L2_TUNER_MODE_STEREO); else if (state->rxsubchans & V4L2_TUNER_SUB_LANG1) msp3400c_setstereo(client, V4L2_TUNER_MODE_LANG1); else msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO); } if (msp_once) state->watch_stereo = 0; } int msp3400c_thread(void *data) { struct i2c_client *client = data; struct msp_state *state = i2c_get_clientdata(client); struct msp3400c_carrier_detect *cd; int count, max1,max2,val1,val2, val,this; v4l_dbg(1, msp_debug, client, "msp3400 daemon started\n"); 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(1, 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"); msp_set_audio(client); continue; } /* mute */ msp_set_mute(client); msp3400c_setmode(client, MSP_MODE_AM_DETECT /* +1 */ ); val1 = val2 = 0; max1 = max2 = -1; state->watch_stereo = 0; /* some time for the tuner to sync */ 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 (this = 0; this < count; this++) { msp3400c_setcarrier(client, cd[this].cdo,cd[this].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 = this; v4l_dbg(1, msp_debug, client, "carrier1 val: %5d / %s\n", val,cd[this].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 (this = 0; this < count; this++) { msp3400c_setcarrier(client, cd[this].cdo,cd[this].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 = this; v4l_dbg(1, msp_debug, client, "carrier2 val: %5d / %s\n", val,cd[this].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_setmode(client, MSP_MODE_FM_TERRA); state->nicam_on = 0; msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO); state->watch_stereo = 1; } else if (max2 == 1 && state->has_nicam) { /* B/G NICAM */ state->second = msp3400c_carrier_detect_55[max2].cdo; msp3400c_setmode(client, MSP_MODE_FM_NICAM1); state->nicam_on = 1; msp3400c_setcarrier(client, state->second, state->main); state->watch_stereo = 1; } else { goto no_second; } break; case 2: /* 6.0 */ /* PAL I NICAM */ state->second = MSP_CARRIER(6.552); msp3400c_setmode(client, MSP_MODE_FM_NICAM2); state->nicam_on = 1; msp3400c_setcarrier(client, state->second, state->main); 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_setmode(client, MSP_MODE_FM_TERRA); state->nicam_on = 0; msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO); 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_setmode(client, MSP_MODE_AM_NICAM); state->nicam_on = 0; msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO); msp3400c_setcarrier(client, state->second, state->main); /* volume prescale for SCART (AM mono input) */ msp_write_dsp(client, 0x000d, 0x1900); state->watch_stereo = 1; } else if (max2 == 0 && state->has_nicam) { /* D/K NICAM */ state->second = msp3400c_carrier_detect_65[max2].cdo; msp3400c_setmode(client, MSP_MODE_FM_NICAM1); state->nicam_on = 1; msp3400c_setcarrier(client, state->second, state->main); 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_setmode(client, MSP_MODE_FM_TERRA); state->nicam_on = 0; msp3400c_setcarrier(client, state->second, state->main); state->rxsubchans = V4L2_TUNER_SUB_MONO; msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO); break; } /* unmute */ msp_set_audio(client); if (msp_debug) msp3400c_print_mode(client); /* monitor tv audio mode */ while (state->watch_stereo) { if (msp_sleep(state,5000)) goto restart; 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 = i2c_get_clientdata(client); int val, i, std; v4l_dbg(1, msp_debug, client, "msp3410 daemon started\n"); 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(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"); msp_set_audio(client); continue; } /* put into sane state (and mute) */ msp_reset(client); /* some time for the tuner to sync */ if (msp_sleep(state,200)) goto restart; /* start autodetect */ if (state->radio) std = 0x40; else std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1; state->watch_stereo = 0; if (msp_debug) v4l_dbg(1, 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(1, 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; 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); val = 0x0009; msp_write_dem(client, 0x20, val); } /* set various prescales */ msp_write_dsp(client, 0x0d, 0x1900); /* scart */ msp_write_dsp(client, 0x0e, 0x2403); /* FM */ msp_write_dsp(client, 0x10, 0x5a00); /* nicam */ /* set stereo */ switch (val) { case 0x0008: /* B/G NICAM */ case 0x000a: /* I NICAM */ if (val == 0x0008) state->mode = MSP_MODE_FM_NICAM1; else state->mode = MSP_MODE_FM_NICAM2; /* just turn on stereo */ state->rxsubchans = V4L2_TUNER_SUB_STEREO; state->nicam_on = 1; state->watch_stereo = 1; msp3400c_setstereo(client,V4L2_TUNER_MODE_STEREO); break; case 0x0009: state->mode = MSP_MODE_AM_NICAM; state->rxsubchans = V4L2_TUNER_SUB_MONO; state->nicam_on = 1; msp3400c_setstereo(client,V4L2_TUNER_MODE_MONO); state->watch_stereo = 1; break; case 0x0020: /* BTSC */ /* just turn on stereo */ state->mode = MSP_MODE_BTSC; state->rxsubchans = V4L2_TUNER_SUB_STEREO; state->nicam_on = 0; state->watch_stereo = 1; msp3400c_setstereo(client,V4L2_TUNER_MODE_STEREO); break; case 0x0040: /* FM radio */ state->mode = MSP_MODE_FM_RADIO; state->rxsubchans = V4L2_TUNER_SUB_STEREO; state->audmode = V4L2_TUNER_MODE_STEREO; state->nicam_on = 0; state->watch_stereo = 0; /* not needed in theory if we have radio, but short programming enables carrier mute */ msp3400c_setmode(client, MSP_MODE_FM_RADIO); msp3400c_setcarrier(client, MSP_CARRIER(10.7), MSP_CARRIER(10.7)); /* scart routing */ msp_set_scart(client,SCART_IN2,0); /* msp34xx does radio decoding */ msp_write_dsp(client, 0x08, 0x0020); msp_write_dsp(client, 0x09, 0x0020); msp_write_dsp(client, 0x0b, 0x0020); break; case 0x0003: case 0x0004: case 0x0005: state->mode = MSP_MODE_FM_TERRA; state->rxsubchans = V4L2_TUNER_SUB_MONO; state->audmode = V4L2_TUNER_MODE_MONO; state->nicam_on = 0; state->watch_stereo = 1; break; } /* unmute, restore misc registers */ msp_set_audio(client); msp_write_dsp(client, 0x13, state->acb); if (state->has_i2s_conf) msp_write_dem(client, 0x40, state->i2s_mode); /* monitor tv audio mode */ while (state->watch_stereo) { if (msp_sleep(state,5000)) goto restart; 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 */ /* set the same 'source' for the loudspeaker, scart and quasi-peak detector * the value for source is the same as bit 15:8 of DSP registers 0x08, * 0x0a and 0x0c: 0=mono, 1=stereo or A|B, 2=SCART, 3=stereo or A, 4=stereo or B * * this function replaces msp3400c_setstereo */ static void msp34xxg_set_source(struct i2c_client *client, int source) { struct msp_state *state = i2c_get_clientdata(client); /* fix matrix mode to stereo and let the msp choose what * to output according to 'source', as recommended * for MONO (source==0) downmixing set bit[7:0] to 0x30 */ int value = (source & 0x07) << 8 | (source == 0 ? 0x30 : 0x20); v4l_dbg(1, msp_debug, client, "set source to %d (0x%x)\n", source, value); /* Loudspeaker Output */ msp_write_dsp(client, 0x08, value); /* SCART1 DA Output */ msp_write_dsp(client, 0x0a, value); /* Quasi-peak detector */ msp_write_dsp(client, 0x0c, value); /* * set identification threshold. Personally, I * I set it to a higher value that 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 */ msp_write_dem(client, 0x22, msp_stereo_thresh); state->source = source; } /* (re-)initialize the msp34xxg, according to the current norm in state->norm * return 0 if it worked, -1 if it failed */ static int msp34xxg_reset(struct i2c_client *client) { struct msp_state *state = i2c_get_clientdata(client); int modus, std; if (msp_reset(client)) return -1; /* make sure that input/output is muted (paranoid mode) */ /* ACB, mute DSP input, mute SCART 1 */ if (msp_write_dsp(client, 0x13, 0x0f20)) return -1; if (state->has_i2s_conf) msp_write_dem(client, 0x40, state->i2s_mode); /* step-by-step initialisation, as described in the manual */ modus = msp_modus(client); if (state->radio) std = 0x40; else std = (state->v4l2_std & V4L2_STD_NTSC) ? 0x20 : 1; modus &= ~0x03; /* STATUS_CHANGE = 0 */ modus |= 0x01; /* AUTOMATIC_SOUND_DETECTION = 1 */ if (msp_write_dem(client, 0x30, modus)) return -1; if (msp_write_dem(client, 0x20, std)) return -1; /* write the dsps that may have an influence on standard/audio autodetection right now */ msp34xxg_set_source(client, state->source); /* AM/FM Prescale [15:8] 75khz deviation */ if (msp_write_dsp(client, 0x0e, 0x3000)) return -1; /* NICAM Prescale 9db gain (as recommended) */ if (msp_write_dsp(client, 0x10, 0x5a00)) return -1; return 0; } int msp34xxg_thread(void *data) { struct i2c_client *client = data; struct msp_state *state = i2c_get_clientdata(client); int val, std, i; v4l_dbg(1, msp_debug, client, "msp34xxg daemon started\n"); state->source = 1; /* default */ 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; /* setup the chip*/ msp34xxg_reset(client); std = msp_standard; if (std != 0x01) goto unmute; /* watch autodetect */ v4l_dbg(1, msp_debug, client, "triggered 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) { std = val; break; } v4l_dbg(2, msp_debug, client, "detection still in progress\n"); } if (std == 1) { v4l_dbg(1, msp_debug, client, "detection still in progress after 10 tries. giving up.\n"); continue; } unmute: state->std = std; v4l_dbg(1, msp_debug, client, "current standard: %s (0x%04x)\n", msp_standard_std_name(std), std); /* 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; msp_write_dem(client, 0x40, state->i2s_mode); } v4l_dbg(1, msp_debug, client, "thread: exit\n"); return 0; } void msp34xxg_detect_stereo(struct i2c_client *client) { struct msp_state *state = i2c_get_clientdata(client); int status = msp_read_dem(client, 0x0200); int is_bilingual = status & 0x100; int is_stereo = status & 0x40; state->rxsubchans = 0; if (is_stereo) state->rxsubchans |= V4L2_TUNER_SUB_STEREO; else state->rxsubchans |= V4L2_TUNER_SUB_MONO; if (is_bilingual) { state->rxsubchans |= V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; /* I'm supposed to check whether it's SAP or not * and set only LANG2/SAP in this case. Yet, the MSP * does a lot of work to hide this and handle everything * the same way. I don't want to work around it so unless * this is a problem, I'll handle SAP just like lang1/lang2. */ } v4l_dbg(1, msp_debug, client, "status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n", status, is_stereo, is_bilingual, state->rxsubchans); } void msp34xxg_set_audmode(struct i2c_client *client, int audmode) { struct msp_state *state = i2c_get_clientdata(client); int source; switch (audmode) { case V4L2_TUNER_MODE_MONO: source = 0; /* mono only */ break; case V4L2_TUNER_MODE_STEREO: source = 1; /* stereo or A|B, see comment in msp34xxg_get_v4l2_stereo() */ /* problem: that could also mean 2 (scart input) */ break; case V4L2_TUNER_MODE_LANG1: source = 3; /* stereo or A */ break; case V4L2_TUNER_MODE_LANG2: source = 4; /* stereo or B */ break; default: audmode = 0; source = 1; break; } state->audmode = audmode; msp34xxg_set_source(client, source); }