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linuxdebug/drivers/media/i2c/msp3400-kthreads.c

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null pointer error
2024-07-16 15:50:57 +02:00
// 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;
}