diff options
Diffstat (limited to 'drivers/media/video/msp3400-kthreads.c')
| -rw-r--r-- | drivers/media/video/msp3400-kthreads.c | 1010 |
1 files changed, 1010 insertions, 0 deletions
diff --git a/drivers/media/video/msp3400-kthreads.c b/drivers/media/video/msp3400-kthreads.c new file mode 100644 index 00000000000..2b59b684753 --- /dev/null +++ b/drivers/media/video/msp3400-kthreads.c @@ -0,0 +1,1010 @@ +/* + * Programming the mspx4xx sound processor family + * + * (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org> + * + * 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 <linux/kernel.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/videodev.h> +#include <linux/videodev2.h> +#include <media/v4l2-common.h> +#include <media/audiochip.h> +#include <linux/kthread.h> +#include <linux/suspend.h> +#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, 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 (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, 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, 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, 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, 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, client, "BTSC setstereo: %s\n",strmode[mode]); + nicam=0x0300; + break; + case MSP_MODE_EXTERN: + v4l_dbg(1, client, "extern setstereo: %s\n",strmode[mode]); + nicam = 0x0200; + break; + case MSP_MODE_FM_RADIO: + v4l_dbg(1, client, "FM-Radio setstereo: %s\n",strmode[mode]); + break; + default: + v4l_dbg(1, 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, 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, client, "setstereo final source/matrix = 0x%x\n", src); + + if (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, client, "mono sound carrier: %d.%03d MHz\n", + state->main / 910000, (state->main / 910) % 1000); + } else { + v4l_dbg(1, 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, 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, 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, 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, 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, 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, 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, client, "watch: rxsubchans %d => %d\n", + state->rxsubchans,rxsubchans); + state->rxsubchans = rxsubchans; + } + if (newnicam != state->nicam_on) { + update = 1; + v4l_dbg(1, 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 (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, client, "msp3400 daemon started\n"); + for (;;) { + v4l_dbg(2, client, "msp3400 thread: sleep\n"); + msp_sleep(state, -1); + v4l_dbg(2, client, "msp3400 thread: wakeup\n"); + + restart: + v4l_dbg(1, 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, 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 (amsound && (state->v4l2_std & V4L2_STD_SECAM)) { + /* autodetect doesn't work well with AM ... */ + max1 = 3; + count = 0; + v4l_dbg(1, 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, 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 (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, 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 (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, 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, client, "msp3410 daemon started\n"); + + for (;;) { + v4l_dbg(2, client, "msp3410 thread: sleep\n"); + msp_sleep(state,-1); + v4l_dbg(2, client, "msp3410 thread: wakeup\n"); + + restart: + v4l_dbg(1, 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, 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 (debug) + v4l_dbg(1, 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, 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, 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 (amsound && !state->radio && (state->v4l2_std & V4L2_STD_SECAM) && + (val != 0x0009)) { + /* autodetection has failed, let backup */ + v4l_dbg(1, 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, 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, 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, stereo_threshold); + 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, client, "msp34xxg daemon started\n"); + + state->source = 1; /* default */ + for (;;) { + v4l_dbg(2, client, "msp34xxg thread: sleep\n"); + msp_sleep(state, -1); + v4l_dbg(2, client, "msp34xxg thread: wakeup\n"); + + restart: + v4l_dbg(1, client, "thread: restart scan\n"); + state->restart = 0; + if (kthread_should_stop()) + break; + + /* setup the chip*/ + msp34xxg_reset(client); + std = standard; + if (std != 0x01) + goto unmute; + + /* watch autodetect */ + v4l_dbg(1, 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, client, "detection still in progress\n"); + } + if (std == 1) { + v4l_dbg(1, client, "detection still in progress after 10 tries. giving up.\n"); + continue; + } + + unmute: + state->std = std; + v4l_dbg(1, 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, 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, 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); +} + |