diff options
Diffstat (limited to 'drivers/media/i2c/msp3400-kthreads.c')
| -rw-r--r-- | drivers/media/i2c/msp3400-kthreads.c | 1155 |
1 files changed, 1155 insertions, 0 deletions
diff --git a/drivers/media/i2c/msp3400-kthreads.c b/drivers/media/i2c/msp3400-kthreads.c new file mode 100644 index 0000000000..ecabc0e1d3 --- /dev/null +++ b/drivers/media/i2c/msp3400-kthreads.c @@ -0,0 +1,1155 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Programming the mspx4xx sound processor family + * + * (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org> + */ + + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/freezer.h> +#include <linux/videodev2.h> +#include <media/v4l2-common.h> +#include <media/drv-intf/msp3400.h> +#include <linux/kthread.h> +#include <linux/suspend.h> +#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; + v4l2_std_id std; +} msp_stdlist[] = { + { 0x0000, 0, 0, "could not detect sound standard", V4L2_STD_ALL }, + { 0x0001, 0, 0, "autodetect start", V4L2_STD_ALL }, + { 0x0002, MSP_CARRIER(4.5), MSP_CARRIER(4.72), + "4.5/4.72 M Dual FM-Stereo", V4L2_STD_MN }, + { 0x0003, MSP_CARRIER(5.5), MSP_CARRIER(5.7421875), + "5.5/5.74 B/G Dual FM-Stereo", V4L2_STD_BG }, + { 0x0004, MSP_CARRIER(6.5), MSP_CARRIER(6.2578125), + "6.5/6.25 D/K1 Dual FM-Stereo", V4L2_STD_DK }, + { 0x0005, MSP_CARRIER(6.5), MSP_CARRIER(6.7421875), + "6.5/6.74 D/K2 Dual FM-Stereo", V4L2_STD_DK }, + { 0x0006, MSP_CARRIER(6.5), MSP_CARRIER(6.5), + "6.5 D/K FM-Mono (HDEV3)", V4L2_STD_DK }, + { 0x0007, MSP_CARRIER(6.5), MSP_CARRIER(5.7421875), + "6.5/5.74 D/K3 Dual FM-Stereo", V4L2_STD_DK }, + { 0x0008, MSP_CARRIER(5.5), MSP_CARRIER(5.85), + "5.5/5.85 B/G NICAM FM", V4L2_STD_BG }, + { 0x0009, MSP_CARRIER(6.5), MSP_CARRIER(5.85), + "6.5/5.85 L NICAM AM", V4L2_STD_L }, + { 0x000a, MSP_CARRIER(6.0), MSP_CARRIER(6.55), + "6.0/6.55 I NICAM FM", V4L2_STD_PAL_I }, + { 0x000b, MSP_CARRIER(6.5), MSP_CARRIER(5.85), + "6.5/5.85 D/K NICAM FM", V4L2_STD_DK }, + { 0x000c, MSP_CARRIER(6.5), MSP_CARRIER(5.85), + "6.5/5.85 D/K NICAM FM (HDEV2)", V4L2_STD_DK }, + { 0x000d, MSP_CARRIER(6.5), MSP_CARRIER(5.85), + "6.5/5.85 D/K NICAM FM (HDEV3)", V4L2_STD_DK }, + { 0x0020, MSP_CARRIER(4.5), MSP_CARRIER(4.5), + "4.5 M BTSC-Stereo", V4L2_STD_MTS }, + { 0x0021, MSP_CARRIER(4.5), MSP_CARRIER(4.5), + "4.5 M BTSC-Mono + SAP", V4L2_STD_MTS }, + { 0x0030, MSP_CARRIER(4.5), MSP_CARRIER(4.5), + "4.5 M EIA-J Japan Stereo", V4L2_STD_NTSC_M_JP }, + { 0x0040, MSP_CARRIER(10.7), MSP_CARRIER(10.7), + "10.7 FM-Stereo Radio", V4L2_STD_ALL }, + { 0x0050, MSP_CARRIER(6.5), MSP_CARRIER(6.5), + "6.5 SAT-Mono", V4L2_STD_ALL }, + { 0x0051, MSP_CARRIER(7.02), MSP_CARRIER(7.20), + "7.02/7.20 SAT-Stereo", V4L2_STD_ALL }, + { 0x0060, MSP_CARRIER(7.2), MSP_CARRIER(7.2), + "7.2 SAT ADR", V4L2_STD_ALL }, + { -1, 0, 0, NULL, 0 }, /* 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 + }, { /* Terrestrial 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 v4l2_std_id msp_standard_std(int std) +{ + int i; + + for (i = 0; msp_stdlist[i].name != NULL; i++) + if (msp_stdlist[i].retval == std) + return msp_stdlist[i].std; + return V4L2_STD_ALL; +} + +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; + + dev_dbg_lvl(&client->dev, 1, msp_debug, "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 + */ + dev_dbg_lvl(&client->dev, 1, msp_debug, + "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: + dev_dbg_lvl(&client->dev, 1, msp_debug, "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: + dev_dbg_lvl(&client->dev, 1, msp_debug, "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: + dev_dbg_lvl(&client->dev, 1, msp_debug, + "NICAM set_audmode: %s\n", modestr); + if (state->nicam_on) + src = 0x0100; /* NICAM */ + break; + case MSP_MODE_BTSC: + dev_dbg_lvl(&client->dev, 1, msp_debug, + "BTSC set_audmode: %s\n", modestr); + break; + case MSP_MODE_EXTERN: + dev_dbg_lvl(&client->dev, 1, msp_debug, + "extern set_audmode: %s\n", modestr); + src = 0x0200; /* SCART */ + break; + case MSP_MODE_FM_RADIO: + dev_dbg_lvl(&client->dev, 1, msp_debug, + "FM-Radio set_audmode: %s\n", modestr); + break; + default: + dev_dbg_lvl(&client->dev, 1, msp_debug, "mono set_audmode\n"); + return; + } + + /* switch audio */ + dev_dbg_lvl(&client->dev, 1, msp_debug, "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) { + dev_dbg_lvl(&client->dev, 1, msp_debug, "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; + } + dev_dbg_lvl(&client->dev, 1, msp_debug, + "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) + dev_dbg_lvl(&client->dev, 1, msp_debug, + "mono sound carrier: %d.%03d MHz\n", + state->main / 910000, (state->main / 910) % 1000); + else + dev_dbg_lvl(&client->dev, 1, msp_debug, + "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) + dev_dbg_lvl(&client->dev, 1, msp_debug, + "NICAM/FM carrier : %d.%03d MHz\n", + state->second / 910000, (state->second/910) % 1000); + if (state->mode == MSP_MODE_AM_NICAM) + dev_dbg_lvl(&client->dev, 1, msp_debug, + "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) { + dev_dbg_lvl(&client->dev, 1, msp_debug, + "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; + dev_dbg_lvl(&client->dev, 2, msp_debug, + "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); + dev_dbg_lvl(&client->dev, 2, msp_debug, "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; + dev_dbg_lvl(&client->dev, 1, msp_debug, + "watch: rxsubchans %02x => %02x\n", + state->rxsubchans, rxsubchans); + state->rxsubchans = rxsubchans; + } + if (newnicam != state->nicam_on) { + update = 1; + dev_dbg_lvl(&client->dev, 1, msp_debug, "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; + + dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3400 daemon started\n"); + state->detected_std = V4L2_STD_ALL; + set_freezable(); + for (;;) { + dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3400 thread: sleep\n"); + msp_sleep(state, -1); + dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3400 thread: wakeup\n"); + +restart: + dev_dbg_lvl(&client->dev, 2, msp_debug, "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 */ + dev_dbg_lvl(&client->dev, 1, msp_debug, + "thread: no carrier scan\n"); + state->scan_in_progress = 0; + msp_update_volume(state); + continue; + } + + /* mute audio */ + state->scan_in_progress = 1; + msp_update_volume(state); + + 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; + dev_dbg_lvl(&client->dev, 1, msp_debug, "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; + } + dev_dbg_lvl(&client->dev, 1, msp_debug, + "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; + } + dev_dbg_lvl(&client->dev, 1, msp_debug, + "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 */ + state->detected_std = V4L2_STD_BG | V4L2_STD_PAL_H; + 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->detected_std = V4L2_STD_PAL_I; + 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; + state->detected_std = V4L2_STD_DK; + } 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; + state->detected_std = V4L2_STD_L; + } 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; + state->detected_std = V4L2_STD_DK; + } else { + goto no_second; + } + break; + case 0: /* 4.5 */ + state->detected_std = V4L2_STD_MN; + fallthrough; + 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_update_volume(state); + + 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); + } + } + dev_dbg_lvl(&client->dev, 1, msp_debug, "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; + + dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3410 daemon started\n"); + state->detected_std = V4L2_STD_ALL; + set_freezable(); + for (;;) { + dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3410 thread: sleep\n"); + msp_sleep(state, -1); + dev_dbg_lvl(&client->dev, 2, msp_debug, "msp3410 thread: wakeup\n"); + +restart: + dev_dbg_lvl(&client->dev, 2, msp_debug, "thread: restart scan\n"); + state->restart = 0; + if (kthread_should_stop()) + break; + + if (state->mode == MSP_MODE_EXTERN) { + /* no carrier scan needed, just unmute */ + dev_dbg_lvl(&client->dev, 1, msp_debug, + "thread: no carrier scan\n"); + state->scan_in_progress = 0; + msp_update_volume(state); + continue; + } + + /* mute audio */ + state->scan_in_progress = 1; + msp_update_volume(state); + + /* 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) + dev_dbg_lvl(&client->dev, 2, msp_debug, + "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; + dev_dbg_lvl(&client->dev, 2, msp_debug, + "detection still in progress\n"); + } + } + for (i = 0; msp_stdlist[i].name != NULL; i++) + if (msp_stdlist[i].retval == val) + break; + dev_dbg_lvl(&client->dev, 1, msp_debug, "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 */ + dev_dbg_lvl(&client->dev, 1, msp_debug, "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); + } else { + state->detected_std = msp_standard_std(state->std); + } + + /* 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_update_volume(state); + + /* 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); + } + } + dev_dbg_lvl(&client->dev, 1, msp_debug, "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) { + dev_dbg_lvl(&client->dev, 1, msp_debug, "selected radio modus\n"); + return 0x0001; + } + if (state->v4l2_std == V4L2_STD_NTSC_M_JP) { + dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (EIA-J) modus\n"); + return 0x4001; + } + if (state->v4l2_std == V4L2_STD_NTSC_M_KR) { + dev_dbg_lvl(&client->dev, 1, msp_debug, "selected M (A2) modus\n"); + return 0x0001; + } + if (state->v4l2_std == V4L2_STD_SECAM_L) { + dev_dbg_lvl(&client->dev, 1, msp_debug, "selected SECAM-L modus\n"); + return 0x6001; + } + if (state->v4l2_std & V4L2_STD_MN) { + dev_dbg_lvl(&client->dev, 1, msp_debug, "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; + + dev_dbg_lvl(&client->dev, 1, msp_debug, + "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; + + dev_dbg_lvl(&client->dev, 1, msp_debug, "msp34xxg daemon started\n"); + state->detected_std = V4L2_STD_ALL; + set_freezable(); + for (;;) { + dev_dbg_lvl(&client->dev, 2, msp_debug, "msp34xxg thread: sleep\n"); + msp_sleep(state, -1); + dev_dbg_lvl(&client->dev, 2, msp_debug, "msp34xxg thread: wakeup\n"); + +restart: + dev_dbg_lvl(&client->dev, 1, msp_debug, "thread: restart scan\n"); + state->restart = 0; + if (kthread_should_stop()) + break; + + if (state->mode == MSP_MODE_EXTERN) { + /* no carrier scan needed, just unmute */ + dev_dbg_lvl(&client->dev, 1, msp_debug, + "thread: no carrier scan\n"); + state->scan_in_progress = 0; + msp_update_volume(state); + 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 */ + dev_dbg_lvl(&client->dev, 1, msp_debug, + "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; + } + dev_dbg_lvl(&client->dev, 2, msp_debug, + "detection still in progress\n"); + } + if (state->std == 1) { + dev_dbg_lvl(&client->dev, 1, msp_debug, + "detection still in progress after 10 tries. giving up.\n"); + continue; + } + +unmute: + dev_dbg_lvl(&client->dev, 1, msp_debug, + "detected standard: %s (0x%04x)\n", + msp_standard_std_name(state->std), state->std); + state->detected_std = msp_standard_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_update_volume(state); + + /* 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; + } + } + dev_dbg_lvl(&client->dev, 1, msp_debug, "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; + } + dev_dbg_lvl(&client->dev, 1, msp_debug, + "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; +} + |