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linux/linux-5.4.31/drivers/media/pci/saa7134/saa7134-tvaudio.c

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2024-01-30 10:43:28 +00:00
// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* device driver for philips saa7134 based TV cards
* tv audio decoder (fm stereo, nicam, ...)
*
* (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
*/
#include "saa7134.h"
#include "saa7134-reg.h"
#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/kthread.h>
#include <linux/delay.h>
#include <linux/freezer.h>
#include <asm/div64.h>
/* ------------------------------------------------------------------ */
static unsigned int audio_debug;
module_param(audio_debug, int, 0644);
MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
static unsigned int audio_ddep;
module_param(audio_ddep, int, 0644);
MODULE_PARM_DESC(audio_ddep,"audio ddep overwrite");
static int audio_clock_override = UNSET;
module_param(audio_clock_override, int, 0644);
static int audio_clock_tweak;
module_param(audio_clock_tweak, int, 0644);
MODULE_PARM_DESC(audio_clock_tweak, "Audio clock tick fine tuning for cards with audio crystal that's slightly off (range [-1024 .. 1024])");
#define audio_dbg(level, fmt, arg...) do { \
if (audio_debug >= level) \
printk(KERN_DEBUG pr_fmt("audio: " fmt), ## arg); \
} while (0)
/* msecs */
#define SCAN_INITIAL_DELAY 1000
#define SCAN_SAMPLE_DELAY 200
#define SCAN_SUBCARRIER_DELAY 2000
/* ------------------------------------------------------------------ */
/* saa7134 code */
static struct mainscan {
char *name;
v4l2_std_id std;
int carr;
} mainscan[] = {
{
.name = "MN",
.std = V4L2_STD_MN,
.carr = 4500,
},{
.name = "BGH",
.std = V4L2_STD_B | V4L2_STD_GH,
.carr = 5500,
},{
.name = "I",
.std = V4L2_STD_PAL_I,
.carr = 6000,
},{
.name = "DKL",
.std = V4L2_STD_DK | V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC,
.carr = 6500,
}
};
static struct saa7134_tvaudio tvaudio[] = {
{
.name = "PAL-B/G FM-stereo",
.std = V4L2_STD_PAL_BG,
.mode = TVAUDIO_FM_BG_STEREO,
.carr1 = 5500,
.carr2 = 5742,
},{
.name = "PAL-D/K1 FM-stereo",
.std = V4L2_STD_PAL_DK,
.carr1 = 6500,
.carr2 = 6258,
.mode = TVAUDIO_FM_BG_STEREO,
},{
.name = "PAL-D/K2 FM-stereo",
.std = V4L2_STD_PAL_DK,
.carr1 = 6500,
.carr2 = 6742,
.mode = TVAUDIO_FM_BG_STEREO,
},{
.name = "PAL-D/K3 FM-stereo",
.std = V4L2_STD_PAL_DK,
.carr1 = 6500,
.carr2 = 5742,
.mode = TVAUDIO_FM_BG_STEREO,
},{
.name = "PAL-B/G NICAM",
.std = V4L2_STD_PAL_BG,
.carr1 = 5500,
.carr2 = 5850,
.mode = TVAUDIO_NICAM_FM,
},{
.name = "PAL-I NICAM",
.std = V4L2_STD_PAL_I,
.carr1 = 6000,
.carr2 = 6552,
.mode = TVAUDIO_NICAM_FM,
},{
.name = "PAL-D/K NICAM",
.std = V4L2_STD_PAL_DK,
.carr1 = 6500,
.carr2 = 5850,
.mode = TVAUDIO_NICAM_FM,
},{
.name = "SECAM-L NICAM",
.std = V4L2_STD_SECAM_L,
.carr1 = 6500,
.carr2 = 5850,
.mode = TVAUDIO_NICAM_AM,
},{
.name = "SECAM-D/K NICAM",
.std = V4L2_STD_SECAM_DK,
.carr1 = 6500,
.carr2 = 5850,
.mode = TVAUDIO_NICAM_FM,
},{
.name = "NTSC-A2 FM-stereo",
.std = V4L2_STD_NTSC,
.carr1 = 4500,
.carr2 = 4724,
.mode = TVAUDIO_FM_K_STEREO,
},{
.name = "NTSC-M",
.std = V4L2_STD_NTSC,
.carr1 = 4500,
.carr2 = -1,
.mode = TVAUDIO_FM_MONO,
}
};
#define TVAUDIO ARRAY_SIZE(tvaudio)
/* ------------------------------------------------------------------ */
static u32 tvaudio_carr2reg(u32 carrier)
{
u64 a = carrier;
a <<= 24;
do_div(a,12288);
return a;
}
static void tvaudio_setcarrier(struct saa7134_dev *dev,
int primary, int secondary)
{
if (-1 == secondary)
secondary = primary;
saa_writel(SAA7134_CARRIER1_FREQ0 >> 2, tvaudio_carr2reg(primary));
saa_writel(SAA7134_CARRIER2_FREQ0 >> 2, tvaudio_carr2reg(secondary));
}
#define SAA7134_MUTE_MASK 0xbb
#define SAA7134_MUTE_ANALOG 0x04
#define SAA7134_MUTE_I2S 0x40
static void mute_input_7134(struct saa7134_dev *dev)
{
unsigned int mute;
struct saa7134_input *in;
int ausel=0, ics=0, ocs=0;
int mask;
/* look what is to do ... */
in = dev->input;
mute = (dev->ctl_mute ||
(dev->automute && (&card(dev).radio) != in));
if (card(dev).mute.type) {
/*
* 7130 - we'll mute using some unconnected audio input
* 7134 - we'll probably should switch external mux with gpio
*/
if (mute)
in = &card(dev).mute;
}
if (dev->hw_mute == mute &&
dev->hw_input == in && !dev->insuspend) {
audio_dbg(1, "mute/input: nothing to do [mute=%d,input=%s]\n",
mute, saa7134_input_name[in->type]);
return;
}
audio_dbg(1, "ctl_mute=%d automute=%d input=%s => mute=%d input=%s\n",
dev->ctl_mute, dev->automute,
saa7134_input_name[dev->input->type], mute,
saa7134_input_name[in->type]);
dev->hw_mute = mute;
dev->hw_input = in;
if (PCI_DEVICE_ID_PHILIPS_SAA7134 == dev->pci->device)
/* 7134 mute */
saa_writeb(SAA7134_AUDIO_MUTE_CTRL, mute ?
SAA7134_MUTE_MASK |
SAA7134_MUTE_ANALOG |
SAA7134_MUTE_I2S :
SAA7134_MUTE_MASK);
/* switch internal audio mux */
switch (in->amux) {
case TV: ausel=0xc0; ics=0x00; ocs=0x02; break;
case LINE1: ausel=0x80; ics=0x00; ocs=0x00; break;
case LINE2: ausel=0x80; ics=0x08; ocs=0x01; break;
case LINE2_LEFT: ausel=0x80; ics=0x08; ocs=0x05; break;
}
saa_andorb(SAA7134_AUDIO_FORMAT_CTRL, 0xc0, ausel);
saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x08, ics);
saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, ocs);
// for oss, we need to change the clock configuration
if (in->amux == TV)
saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x00);
else
saa_andorb(SAA7134_SIF_SAMPLE_FREQ, 0x03, 0x01);
/* switch gpio-connected external audio mux */
if (0 == card(dev).gpiomask)
return;
mask = card(dev).gpiomask;
saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask);
saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
saa7134_track_gpio(dev, saa7134_input_name[in->type]);
}
static void tvaudio_setmode(struct saa7134_dev *dev,
struct saa7134_tvaudio *audio,
char *note)
{
int acpf, tweak = 0;
if (dev->tvnorm->id == V4L2_STD_NTSC) {
acpf = 0x19066;
} else {
acpf = 0x1e000;
}
if (audio_clock_tweak > -1024 && audio_clock_tweak < 1024)
tweak = audio_clock_tweak;
if (note)
audio_dbg(1, "tvaudio_setmode: %s %s [%d.%03d/%d.%03d MHz] acpf=%d%+d\n",
note, audio->name,
audio->carr1 / 1000, audio->carr1 % 1000,
audio->carr2 / 1000, audio->carr2 % 1000,
acpf, tweak);
acpf += tweak;
saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD0, (acpf & 0x0000ff) >> 0);
saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD1, (acpf & 0x00ff00) >> 8);
saa_writeb(SAA7134_AUDIO_CLOCKS_PER_FIELD2, (acpf & 0x030000) >> 16);
tvaudio_setcarrier(dev,audio->carr1,audio->carr2);
switch (audio->mode) {
case TVAUDIO_FM_MONO:
case TVAUDIO_FM_BG_STEREO:
saa_writeb(SAA7134_DEMODULATOR, 0x00);
saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22);
saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0);
break;
case TVAUDIO_FM_K_STEREO:
saa_writeb(SAA7134_DEMODULATOR, 0x00);
saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x01);
saa_writeb(SAA7134_FM_DEEMPHASIS, 0x22);
saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa0);
break;
case TVAUDIO_NICAM_FM:
saa_writeb(SAA7134_DEMODULATOR, 0x10);
saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44);
saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1);
saa_writeb(SAA7134_NICAM_CONFIG, 0x00);
break;
case TVAUDIO_NICAM_AM:
saa_writeb(SAA7134_DEMODULATOR, 0x12);
saa_writeb(SAA7134_DCXO_IDENT_CTRL, 0x00);
saa_writeb(SAA7134_FM_DEEMPHASIS, 0x44);
saa_writeb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0xa1);
saa_writeb(SAA7134_NICAM_CONFIG, 0x00);
break;
case TVAUDIO_FM_SAT_STEREO:
/* not implemented (yet) */
break;
}
}
static int tvaudio_sleep(struct saa7134_dev *dev, int timeout)
{
if (dev->thread.scan1 == dev->thread.scan2 &&
!kthread_should_stop()) {
if (timeout < 0) {
set_current_state(TASK_INTERRUPTIBLE);
schedule();
} else {
schedule_timeout_interruptible
(msecs_to_jiffies(timeout));
}
}
return dev->thread.scan1 != dev->thread.scan2;
}
static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
{
__s32 left,right,value;
if (!(dev->tvnorm->id & scan->std)) {
audio_dbg(1, "skipping %d.%03d MHz [%4s]\n",
scan->carr / 1000, scan->carr % 1000, scan->name);
return 0;
}
if (audio_debug > 1) {
int i;
audio_dbg(1, "debug %d:", scan->carr);
for (i = -150; i <= 150; i += 30) {
tvaudio_setcarrier(dev,scan->carr+i,scan->carr+i);
saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
return -1;
value = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
if (0 == i)
pr_cont(" # %6d # ", value >> 16);
else
pr_cont(" %6d", value >> 16);
}
pr_cont("\n");
}
tvaudio_setcarrier(dev,scan->carr-90,scan->carr-90);
saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
return -1;
left = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
tvaudio_setcarrier(dev,scan->carr+90,scan->carr+90);
saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
if (tvaudio_sleep(dev,SCAN_SAMPLE_DELAY))
return -1;
right = saa_readl(SAA7134_LEVEL_READOUT1 >> 2);
left >>= 16;
right >>= 16;
value = left > right ? left - right : right - left;
audio_dbg(1, "scanning %d.%03d MHz [%4s] => dc is %5d [%d/%d]\n",
scan->carr / 1000, scan->carr % 1000,
scan->name, value, left, right);
return value;
}
static int tvaudio_getstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio)
{
__u32 idp, nicam, nicam_status;
int retval = -1;
switch (audio->mode) {
case TVAUDIO_FM_MONO:
return V4L2_TUNER_SUB_MONO;
case TVAUDIO_FM_K_STEREO:
case TVAUDIO_FM_BG_STEREO:
idp = (saa_readb(SAA7134_IDENT_SIF) & 0xe0) >> 5;
audio_dbg(1, "getstereo: fm/stereo: idp=0x%x\n", idp);
if (0x03 == (idp & 0x03))
retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
else if (0x05 == (idp & 0x05))
retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
else if (0x01 == (idp & 0x01))
retval = V4L2_TUNER_SUB_MONO;
break;
case TVAUDIO_FM_SAT_STEREO:
/* not implemented (yet) */
break;
case TVAUDIO_NICAM_FM:
case TVAUDIO_NICAM_AM:
nicam = saa_readb(SAA7134_AUDIO_STATUS);
audio_dbg(1, "getstereo: nicam=0x%x\n", nicam);
if (nicam & 0x1) {
nicam_status = saa_readb(SAA7134_NICAM_STATUS);
audio_dbg(1, "getstereo: nicam_status=0x%x\n",
nicam_status);
switch (nicam_status & 0x03) {
case 0x01:
retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
break;
case 0x02:
retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
break;
default:
retval = V4L2_TUNER_SUB_MONO;
}
} else {
/* No nicam detected */
}
break;
}
if (retval != -1)
audio_dbg(1, "found audio subchannels:%s%s%s%s\n",
(retval & V4L2_TUNER_SUB_MONO) ? " mono" : "",
(retval & V4L2_TUNER_SUB_STEREO) ? " stereo" : "",
(retval & V4L2_TUNER_SUB_LANG1) ? " lang1" : "",
(retval & V4L2_TUNER_SUB_LANG2) ? " lang2" : "");
return retval;
}
static int tvaudio_setstereo(struct saa7134_dev *dev, struct saa7134_tvaudio *audio,
u32 mode)
{
static char *name[] = {
[ V4L2_TUNER_MODE_MONO ] = "mono",
[ V4L2_TUNER_MODE_STEREO ] = "stereo",
[ V4L2_TUNER_MODE_LANG1 ] = "lang1",
[ V4L2_TUNER_MODE_LANG2 ] = "lang2",
[ V4L2_TUNER_MODE_LANG1_LANG2 ] = "lang1+lang2",
};
static u32 fm[] = {
[ V4L2_TUNER_MODE_MONO ] = 0x00, /* ch1 */
[ V4L2_TUNER_MODE_STEREO ] = 0x80, /* auto */
[ V4L2_TUNER_MODE_LANG1 ] = 0x00, /* ch1 */
[ V4L2_TUNER_MODE_LANG2 ] = 0x01, /* ch2 */
[ V4L2_TUNER_MODE_LANG1_LANG2 ] = 0x80, /* auto */
};
u32 reg;
switch (audio->mode) {
case TVAUDIO_FM_MONO:
/* nothing to do ... */
break;
case TVAUDIO_FM_K_STEREO:
case TVAUDIO_FM_BG_STEREO:
case TVAUDIO_NICAM_AM:
case TVAUDIO_NICAM_FM:
audio_dbg(1, "setstereo [fm] => %s\n",
name[mode % ARRAY_SIZE(name)]);
reg = fm[ mode % ARRAY_SIZE(fm) ];
saa_writeb(SAA7134_FM_DEMATRIX, reg);
break;
case TVAUDIO_FM_SAT_STEREO:
/* Not implemented */
break;
}
return 0;
}
static int tvaudio_thread(void *data)
{
struct saa7134_dev *dev = data;
int carr_vals[ARRAY_SIZE(mainscan)];
unsigned int i, audio, nscan;
int max1,max2,carrier,rx,mode,lastmode,default_carrier;
set_freezable();
for (;;) {
tvaudio_sleep(dev,-1);
if (kthread_should_stop())
goto done;
restart:
try_to_freeze();
dev->thread.scan1 = dev->thread.scan2;
audio_dbg(1, "tvaudio thread scan start [%d]\n",
dev->thread.scan1);
dev->tvaudio = NULL;
saa_writeb(SAA7134_MONITOR_SELECT, 0xa0);
saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
if (dev->ctl_automute)
dev->automute = 1;
mute_input_7134(dev);
/* give the tuner some time */
if (tvaudio_sleep(dev,SCAN_INITIAL_DELAY))
goto restart;
max1 = 0;
max2 = 0;
nscan = 0;
carrier = 0;
default_carrier = 0;
for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
if (!(dev->tvnorm->id & mainscan[i].std))
continue;
if (!default_carrier)
default_carrier = mainscan[i].carr;
nscan++;
}
if (1 == nscan) {
/* only one candidate -- skip scan ;) */
audio_dbg(1, "only one main carrier candidate - skipping scan\n");
max1 = 12345;
carrier = default_carrier;
} else {
/* scan for the main carrier */
saa_writeb(SAA7134_MONITOR_SELECT,0x00);
tvaudio_setmode(dev,&tvaudio[0],NULL);
for (i = 0; i < ARRAY_SIZE(mainscan); i++) {
carr_vals[i] = tvaudio_checkcarrier(dev, mainscan+i);
if (dev->thread.scan1 != dev->thread.scan2)
goto restart;
}
for (max1 = 0, max2 = 0, i = 0; i < ARRAY_SIZE(mainscan); i++) {
if (max1 < carr_vals[i]) {
max2 = max1;
max1 = carr_vals[i];
carrier = mainscan[i].carr;
} else if (max2 < carr_vals[i]) {
max2 = carr_vals[i];
}
}
}
if (0 != carrier && max1 > 2000 && max1 > max2*3) {
/* found good carrier */
audio_dbg(1, "found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
dev->tvnorm->name, carrier/1000, carrier%1000,
max1, max2);
dev->last_carrier = carrier;
dev->automute = 0;
} else if (0 != dev->last_carrier) {
/* no carrier -- try last detected one as fallback */
carrier = dev->last_carrier;
audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [last detected]\n",
carrier/1000, carrier%1000);
dev->automute = 1;
} else {
/* no carrier + no fallback -- use default */
carrier = default_carrier;
audio_dbg(1, "audio carrier scan failed, using %d.%03d MHz [default]\n",
carrier/1000, carrier%1000);
dev->automute = 1;
}
tvaudio_setcarrier(dev,carrier,carrier);
saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x00);
saa7134_tvaudio_setmute(dev);
/* find the exact tv audio norm */
for (audio = UNSET, i = 0; i < TVAUDIO; i++) {
if (dev->tvnorm->id != UNSET &&
!(dev->tvnorm->id & tvaudio[i].std))
continue;
if (tvaudio[i].carr1 != carrier)
continue;
/* Note: at least the primary carrier is right here */
if (UNSET == audio)
audio = i;
tvaudio_setmode(dev,&tvaudio[i],"trying");
if (tvaudio_sleep(dev,SCAN_SUBCARRIER_DELAY))
goto restart;
if (-1 != tvaudio_getstereo(dev,&tvaudio[i])) {
audio = i;
break;
}
}
saa_andorb(SAA7134_STEREO_DAC_OUTPUT_SELECT, 0x30, 0x30);
if (UNSET == audio)
continue;
tvaudio_setmode(dev,&tvaudio[audio],"using");
tvaudio_setstereo(dev,&tvaudio[audio],V4L2_TUNER_MODE_MONO);
dev->tvaudio = &tvaudio[audio];
lastmode = 42;
for (;;) {
try_to_freeze();
if (tvaudio_sleep(dev,5000))
goto restart;
if (kthread_should_stop())
break;
if (UNSET == dev->thread.mode) {
rx = tvaudio_getstereo(dev, &tvaudio[audio]);
mode = saa7134_tvaudio_rx2mode(rx);
} else {
mode = dev->thread.mode;
}
if (lastmode != mode) {
tvaudio_setstereo(dev,&tvaudio[audio],mode);
lastmode = mode;
}
}
}
done:
dev->thread.stopped = 1;
return 0;
}
/* ------------------------------------------------------------------ */
/* saa7133 / saa7135 code */
static char *stdres[0x20] = {
[0x00] = "no standard detected",
[0x01] = "B/G (in progress)",
[0x02] = "D/K (in progress)",
[0x03] = "M (in progress)",
[0x04] = "B/G A2",
[0x05] = "B/G NICAM",
[0x06] = "D/K A2 (1)",
[0x07] = "D/K A2 (2)",
[0x08] = "D/K A2 (3)",
[0x09] = "D/K NICAM",
[0x0a] = "L NICAM",
[0x0b] = "I NICAM",
[0x0c] = "M Korea",
[0x0d] = "M BTSC ",
[0x0e] = "M EIAJ",
[0x0f] = "FM radio / IF 10.7 / 50 deemp",
[0x10] = "FM radio / IF 10.7 / 75 deemp",
[0x11] = "FM radio / IF sel / 50 deemp",
[0x12] = "FM radio / IF sel / 75 deemp",
[0x13 ... 0x1e ] = "unknown",
[0x1f] = "??? [in progress]",
};
#define DSP_RETRY 32
#define DSP_DELAY 16
#define SAA7135_DSP_RWCLEAR_RERR 1
static inline int saa_dsp_reset_error_bit(struct saa7134_dev *dev)
{
int state = saa_readb(SAA7135_DSP_RWSTATE);
if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
audio_dbg(2, "%s: resetting error bit\n", dev->name);
saa_writeb(SAA7135_DSP_RWCLEAR, SAA7135_DSP_RWCLEAR_RERR);
}
return 0;
}
static inline int saa_dsp_wait_bit(struct saa7134_dev *dev, int bit)
{
int state, count = DSP_RETRY;
state = saa_readb(SAA7135_DSP_RWSTATE);
if (unlikely(state & SAA7135_DSP_RWSTATE_ERR)) {
pr_warn("%s: dsp access error\n", dev->name);
saa_dsp_reset_error_bit(dev);
return -EIO;
}
while (0 == (state & bit)) {
if (unlikely(0 == count)) {
pr_err("dsp access wait timeout [bit=%s]\n",
(bit & SAA7135_DSP_RWSTATE_WRR) ? "WRR" :
(bit & SAA7135_DSP_RWSTATE_RDB) ? "RDB" :
(bit & SAA7135_DSP_RWSTATE_IDA) ? "IDA" :
"???");
return -EIO;
}
saa_wait(DSP_DELAY);
state = saa_readb(SAA7135_DSP_RWSTATE);
count--;
}
return 0;
}
int saa_dsp_writel(struct saa7134_dev *dev, int reg, u32 value)
{
int err;
audio_dbg(2, "dsp write reg 0x%x = 0x%06x\n", reg << 2, value);
err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
if (err < 0)
return err;
saa_writel(reg,value);
err = saa_dsp_wait_bit(dev,SAA7135_DSP_RWSTATE_WRR);
if (err < 0)
return err;
return 0;
}
static int getstereo_7133(struct saa7134_dev *dev)
{
int retval = V4L2_TUNER_SUB_MONO;
u32 value;
value = saa_readl(0x528 >> 2);
if (value & 0x20)
retval = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
if (value & 0x40)
retval = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
return retval;
}
static int mute_input_7133(struct saa7134_dev *dev)
{
u32 reg = 0;
u32 xbarin, xbarout;
int mask;
struct saa7134_input *in;
xbarin = 0x03;
switch (dev->input->amux) {
case TV:
reg = 0x02;
xbarin = 0;
break;
case LINE1:
reg = 0x00;
break;
case LINE2:
case LINE2_LEFT:
reg = 0x09;
break;
}
saa_dsp_writel(dev, 0x464 >> 2, xbarin);
if (dev->ctl_mute) {
reg = 0x07;
xbarout = 0xbbbbbb;
} else
xbarout = 0xbbbb10;
saa_dsp_writel(dev, 0x46c >> 2, xbarout);
saa_writel(0x594 >> 2, reg);
/* switch gpio-connected external audio mux */
if (0 != card(dev).gpiomask) {
mask = card(dev).gpiomask;
if (card(dev).mute.type && dev->ctl_mute)
in = &card(dev).mute;
else
in = dev->input;
saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, mask, mask);
saa_andorl(SAA7134_GPIO_GPSTATUS0 >> 2, mask, in->gpio);
saa7134_track_gpio(dev, saa7134_input_name[in->type]);
}
return 0;
}
static int tvaudio_thread_ddep(void *data)
{
struct saa7134_dev *dev = data;
u32 value, norms;
set_freezable();
for (;;) {
tvaudio_sleep(dev,-1);
if (kthread_should_stop())
goto done;
restart:
try_to_freeze();
dev->thread.scan1 = dev->thread.scan2;
audio_dbg(1, "tvaudio thread scan start [%d]\n",
dev->thread.scan1);
if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
/* insmod option override */
norms = (audio_ddep << 2) | 0x01;
audio_dbg(1, "ddep override: %s\n",
stdres[audio_ddep]);
} else if (&card(dev).radio == dev->input) {
audio_dbg(1, "FM Radio\n");
if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
norms = (0x11 << 2) | 0x01;
/* set IF frequency to 5.5 MHz */
saa_dsp_writel(dev, 0x42c >> 2, 0x729555);
} else {
norms = (0x0f << 2) | 0x01;
}
} else {
/* (let chip) scan for sound carrier */
norms = 0;
if (dev->tvnorm->id & (V4L2_STD_B | V4L2_STD_GH))
norms |= 0x04;
if (dev->tvnorm->id & V4L2_STD_PAL_I)
norms |= 0x20;
if (dev->tvnorm->id & V4L2_STD_DK)
norms |= 0x08;
if (dev->tvnorm->id & V4L2_STD_MN)
norms |= 0x40;
if (dev->tvnorm->id & (V4L2_STD_SECAM_L | V4L2_STD_SECAM_LC))
norms |= 0x10;
if (0 == norms)
norms = 0x7c; /* all */
audio_dbg(1, "scanning:%s%s%s%s%s\n",
(norms & 0x04) ? " B/G" : "",
(norms & 0x08) ? " D/K" : "",
(norms & 0x10) ? " L/L'" : "",
(norms & 0x20) ? " I" : "",
(norms & 0x40) ? " M" : "");
}
/* kick automatic standard detection */
saa_dsp_writel(dev, 0x454 >> 2, 0);
saa_dsp_writel(dev, 0x454 >> 2, norms | 0x80);
/* setup crossbars */
saa_dsp_writel(dev, 0x464 >> 2, 0x000000);
saa_dsp_writel(dev, 0x470 >> 2, 0x101010);
if (tvaudio_sleep(dev,3000))
goto restart;
value = saa_readl(0x528 >> 2) & 0xffffff;
audio_dbg(1, "tvaudio thread status: 0x%x [%s%s%s]\n",
value, stdres[value & 0x1f],
(value & 0x000020) ? ",stereo" : "",
(value & 0x000040) ? ",dual" : "");
audio_dbg(1, "detailed status: %s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s#%s\n",
(value & 0x000080) ? " A2/EIAJ pilot tone " : "",
(value & 0x000100) ? " A2/EIAJ dual " : "",
(value & 0x000200) ? " A2/EIAJ stereo " : "",
(value & 0x000400) ? " A2/EIAJ noise mute " : "",
(value & 0x000800) ? " BTSC/FM radio pilot " : "",
(value & 0x001000) ? " SAP carrier " : "",
(value & 0x002000) ? " BTSC stereo noise mute " : "",
(value & 0x004000) ? " SAP noise mute " : "",
(value & 0x008000) ? " VDSP " : "",
(value & 0x010000) ? " NICST " : "",
(value & 0x020000) ? " NICDU " : "",
(value & 0x040000) ? " NICAM muted " : "",
(value & 0x080000) ? " NICAM reserve sound " : "",
(value & 0x100000) ? " init done " : "");
}
done:
dev->thread.stopped = 1;
return 0;
}
/* ------------------------------------------------------------------ */
/* common stuff + external entry points */
void saa7134_enable_i2s(struct saa7134_dev *dev)
{
int i2s_format;
if (!card_is_empress(dev))
return;
if (dev->pci->device == PCI_DEVICE_ID_PHILIPS_SAA7130)
return;
/* configure GPIO for out */
saa_andorl(SAA7134_GPIO_GPMODE0 >> 2, 0x0E000000, 0x00000000);
switch (dev->pci->device) {
case PCI_DEVICE_ID_PHILIPS_SAA7133:
case PCI_DEVICE_ID_PHILIPS_SAA7135:
/* Set I2S format (SONY)  */
saa_writeb(SAA7133_I2S_AUDIO_CONTROL, 0x00);
/* Start I2S */
saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x11);
break;
case PCI_DEVICE_ID_PHILIPS_SAA7134:
i2s_format = (dev->input->amux == TV) ? 0x00 : 0x01;
/* enable I2S audio output for the mpeg encoder */
saa_writeb(SAA7134_I2S_OUTPUT_SELECT, 0x80);
saa_writeb(SAA7134_I2S_OUTPUT_FORMAT, i2s_format);
saa_writeb(SAA7134_I2S_OUTPUT_LEVEL, 0x0F);
saa_writeb(SAA7134_I2S_AUDIO_OUTPUT, 0x01);
default:
break;
}
}
int saa7134_tvaudio_rx2mode(u32 rx)
{
u32 mode;
mode = V4L2_TUNER_MODE_MONO;
if (rx & V4L2_TUNER_SUB_STEREO)
mode = V4L2_TUNER_MODE_STEREO;
else if (rx & V4L2_TUNER_SUB_LANG1)
mode = V4L2_TUNER_MODE_LANG1;
else if (rx & V4L2_TUNER_SUB_LANG2)
mode = V4L2_TUNER_MODE_LANG2;
return mode;
}
void saa7134_tvaudio_setmute(struct saa7134_dev *dev)
{
switch (dev->pci->device) {
case PCI_DEVICE_ID_PHILIPS_SAA7130:
case PCI_DEVICE_ID_PHILIPS_SAA7134:
mute_input_7134(dev);
break;
case PCI_DEVICE_ID_PHILIPS_SAA7133:
case PCI_DEVICE_ID_PHILIPS_SAA7135:
mute_input_7133(dev);
break;
}
}
void saa7134_tvaudio_setinput(struct saa7134_dev *dev,
struct saa7134_input *in)
{
dev->input = in;
switch (dev->pci->device) {
case PCI_DEVICE_ID_PHILIPS_SAA7130:
case PCI_DEVICE_ID_PHILIPS_SAA7134:
mute_input_7134(dev);
break;
case PCI_DEVICE_ID_PHILIPS_SAA7133:
case PCI_DEVICE_ID_PHILIPS_SAA7135:
mute_input_7133(dev);
break;
}
saa7134_enable_i2s(dev);
}
void saa7134_tvaudio_setvolume(struct saa7134_dev *dev, int level)
{
switch (dev->pci->device) {
case PCI_DEVICE_ID_PHILIPS_SAA7134:
saa_writeb(SAA7134_CHANNEL1_LEVEL, level & 0x1f);
saa_writeb(SAA7134_CHANNEL2_LEVEL, level & 0x1f);
saa_writeb(SAA7134_NICAM_LEVEL_ADJUST, level & 0x1f);
break;
}
}
int saa7134_tvaudio_getstereo(struct saa7134_dev *dev)
{
int retval = V4L2_TUNER_SUB_MONO;
switch (dev->pci->device) {
case PCI_DEVICE_ID_PHILIPS_SAA7134:
if (dev->tvaudio)
retval = tvaudio_getstereo(dev,dev->tvaudio);
break;
case PCI_DEVICE_ID_PHILIPS_SAA7133:
case PCI_DEVICE_ID_PHILIPS_SAA7135:
retval = getstereo_7133(dev);
break;
}
return retval;
}
void saa7134_tvaudio_init(struct saa7134_dev *dev)
{
int clock = saa7134_boards[dev->board].audio_clock;
if (UNSET != audio_clock_override)
clock = audio_clock_override;
switch (dev->pci->device) {
case PCI_DEVICE_ID_PHILIPS_SAA7134:
/* init all audio registers */
saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x00);
if (need_resched())
schedule();
else
udelay(10);
saa_writeb(SAA7134_AUDIO_CLOCK0, clock & 0xff);
saa_writeb(SAA7134_AUDIO_CLOCK1, (clock >> 8) & 0xff);
saa_writeb(SAA7134_AUDIO_CLOCK2, (clock >> 16) & 0xff);
/* frame locked audio is mandatory for NICAM */
saa_writeb(SAA7134_AUDIO_PLL_CTRL, 0x01);
saa_writeb(SAA7134_NICAM_ERROR_LOW, 0x14);
saa_writeb(SAA7134_NICAM_ERROR_HIGH, 0x50);
break;
case PCI_DEVICE_ID_PHILIPS_SAA7133:
case PCI_DEVICE_ID_PHILIPS_SAA7135:
saa_writel(0x598 >> 2, clock);
saa_dsp_writel(dev, 0x474 >> 2, 0x00);
saa_dsp_writel(dev, 0x450 >> 2, 0x00);
}
}
int saa7134_tvaudio_init2(struct saa7134_dev *dev)
{
int (*my_thread)(void *data) = NULL;
switch (dev->pci->device) {
case PCI_DEVICE_ID_PHILIPS_SAA7134:
my_thread = tvaudio_thread;
break;
case PCI_DEVICE_ID_PHILIPS_SAA7133:
case PCI_DEVICE_ID_PHILIPS_SAA7135:
my_thread = tvaudio_thread_ddep;
break;
}
dev->thread.thread = NULL;
dev->thread.scan1 = dev->thread.scan2 = 0;
if (my_thread) {
saa7134_tvaudio_init(dev);
/* start tvaudio thread */
dev->thread.thread = kthread_run(my_thread, dev, "%s", dev->name);
if (IS_ERR(dev->thread.thread)) {
pr_warn("%s: kernel_thread() failed\n",
dev->name);
/* XXX: missing error handling here */
}
}
saa7134_enable_i2s(dev);
return 0;
}
int saa7134_tvaudio_close(struct saa7134_dev *dev)
{
dev->automute = 1;
/* anything else to undo? */
return 0;
}
int saa7134_tvaudio_fini(struct saa7134_dev *dev)
{
/* shutdown tvaudio thread */
if (dev->thread.thread && !dev->thread.stopped)
kthread_stop(dev->thread.thread);
saa_andorb(SAA7134_ANALOG_IO_SELECT, 0x07, 0x00); /* LINE1 */
return 0;
}
int saa7134_tvaudio_do_scan(struct saa7134_dev *dev)
{
if (dev->input->amux != TV) {
audio_dbg(1, "sound IF not in use, skipping scan\n");
dev->automute = 0;
saa7134_tvaudio_setmute(dev);
} else if (dev->thread.thread) {
dev->thread.mode = UNSET;
dev->thread.scan2++;
if (!dev->insuspend && !dev->thread.stopped)
wake_up_process(dev->thread.thread);
} else {
dev->automute = 0;
saa7134_tvaudio_setmute(dev);
}
return 0;
}
EXPORT_SYMBOL(saa_dsp_writel);
EXPORT_SYMBOL(saa7134_tvaudio_setmute);