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linux/drivers/media/video/saa7134/saa7134-tvaudio.c
Jeff Mahoney 58e78475ec saa7134: fix thread shutdown handling 
This patch changes the test for the thread pid from >= 0 to > 0.

When the saa8134 driver initialization fails after a certain point, it goes
through the complete shutdown process for the driver.  Part of shutting it
down includes tearing down the thread for tv audio.

The test for tearing down the thread tests for >= 0.  Since the dev
structure is kzalloc'd, the test will always be true if we haven't tried to
start the thread yet.  We end up waiting on pid 0 to complete, which will
never happen, so we lock up.

This bug was observed in Novell Bugzilla 284718, when request_irq() failed.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-06-28 11:34:54 -07:00

1044 lines
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/*
*
* device driver for philips saa7134 based TV cards
* tv audio decoder (fm stereo, nicam, ...)
*
* (c) 2001-03 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <asm/div64.h>
#include "saa7134-reg.h"
#include "saa7134.h"
/* ------------------------------------------------------------------ */
static unsigned int audio_debug = 0;
module_param(audio_debug, int, 0644);
MODULE_PARM_DESC(audio_debug,"enable debug messages [tv audio]");
static unsigned int audio_ddep = 0;
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 = 0;
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 dprintk(fmt, arg...) if (audio_debug) \
printk(KERN_DEBUG "%s/audio: " fmt, dev->name , ## arg)
#define d2printk(fmt, arg...) if (audio_debug > 1) \
printk(KERN_DEBUG "%s/audio: " fmt, dev->name, ## arg)
#define print_regb(reg) printk("%s: reg 0x%03x [%-16s]: 0x%02x\n", \
dev->name,(SAA7134_##reg),(#reg),saa_readb((SAA7134_##reg)))
/* 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 (sizeof(tvaudio)/sizeof(struct saa7134_tvaudio))
/* ------------------------------------------------------------------ */
static void tvaudio_init(struct saa7134_dev *dev)
{
int clock = saa7134_boards[dev->board].audio_clock;
if (UNSET != audio_clock_override)
clock = audio_clock_override;
/* 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);
saa_writeb(SAA7134_MONITOR_SELECT, 0xa0);
saa_writeb(SAA7134_FM_DEMATRIX, 0x80);
}
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.name) {
/*
* 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) {
dprintk("mute/input: nothing to do [mute=%d,input=%s]\n",
mute,in->name);
return;
}
dprintk("ctl_mute=%d automute=%d input=%s => mute=%d input=%s\n",
dev->ctl_mute,dev->automute,dev->input->name,mute,in->name);
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,in->name);
}
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)
dprintk("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)
{
DECLARE_WAITQUEUE(wait, current);
add_wait_queue(&dev->thread.wq, &wait);
if (dev->thread.scan1 == dev->thread.scan2 && !dev->thread.shutdown) {
if (timeout < 0) {
set_current_state(TASK_INTERRUPTIBLE);
schedule();
} else {
schedule_timeout_interruptible
(msecs_to_jiffies(timeout));
}
}
remove_wait_queue(&dev->thread.wq, &wait);
return dev->thread.scan1 != dev->thread.scan2;
}
static int tvaudio_checkcarrier(struct saa7134_dev *dev, struct mainscan *scan)
{
__s32 left,right,value;
if (audio_debug > 1) {
int i;
dprintk("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)
printk(" # %6d # ",value >> 16);
else
printk(" %6d",value >> 16);
}
printk("\n");
}
if (dev->tvnorm->id & scan->std) {
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;
dprintk("scanning %d.%03d MHz [%4s] => dc is %5d [%d/%d]\n",
scan->carr / 1000, scan->carr % 1000,
scan->name, value, left, right);
} else {
value = 0;
dprintk("skipping %d.%03d MHz [%4s]\n",
scan->carr / 1000, scan->carr % 1000, scan->name);
}
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;
dprintk("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);
dprintk("getstereo: nicam=0x%x\n",nicam);
if (nicam & 0x1) {
nicam_status = saa_readb(SAA7134_NICAM_STATUS);
dprintk("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)
dprintk("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:
dprintk("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;
daemonize("%s", dev->name);
allow_signal(SIGTERM);
for (;;) {
tvaudio_sleep(dev,-1);
if (dev->thread.shutdown || signal_pending(current))
goto done;
restart:
dev->thread.scan1 = dev->thread.scan2;
dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
dev->tvaudio = NULL;
tvaudio_init(dev);
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 ;) */
dprintk("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 */
dprintk("found %s main sound carrier @ %d.%03d MHz [%d/%d]\n",
dev->tvnorm->name, carrier/1000, carrier%1000,
max1, max2);
dev->last_carrier = carrier;
} else if (0 != dev->last_carrier) {
/* no carrier -- try last detected one as fallback */
carrier = dev->last_carrier;
dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
"using %d.%03d MHz [last detected]\n",
dev->name, carrier/1000, carrier%1000);
} else {
/* no carrier + no fallback -- use default */
carrier = default_carrier;
dprintk(KERN_WARNING "%s/audio: audio carrier scan failed, "
"using %d.%03d MHz [default]\n",
dev->name, carrier/1000, carrier%1000);
}
tvaudio_setcarrier(dev,carrier,carrier);
dev->automute = 0;
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 (;;) {
if (tvaudio_sleep(dev,5000))
goto restart;
if (dev->thread.shutdown || signal_pending(current))
break;
if (UNSET == dev->thread.mode) {
rx = tvaudio_getstereo(dev,&tvaudio[i]);
mode = saa7134_tvaudio_rx2mode(rx);
} else {
mode = dev->thread.mode;
}
if (lastmode != mode) {
tvaudio_setstereo(dev,&tvaudio[audio],mode);
lastmode = mode;
}
}
}
done:
complete_and_exit(&dev->thread.exit, 0);
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
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)) {
printk("%s: dsp access error\n",dev->name);
/* FIXME: send ack ... */
return -EIO;
}
while (0 == (state & bit)) {
if (unlikely(0 == count)) {
printk("%s: dsp access wait timeout [bit=%s]\n",
dev->name,
(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;
d2printk("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.name && 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,in->name);
}
return 0;
}
static int tvaudio_thread_ddep(void *data)
{
struct saa7134_dev *dev = data;
u32 value, norms, clock;
daemonize("%s", dev->name);
allow_signal(SIGTERM);
clock = saa7134_boards[dev->board].audio_clock;
if (UNSET != audio_clock_override)
clock = audio_clock_override;
saa_writel(0x598 >> 2, clock);
/* unmute */
saa_dsp_writel(dev, 0x474 >> 2, 0x00);
saa_dsp_writel(dev, 0x450 >> 2, 0x00);
for (;;) {
tvaudio_sleep(dev,-1);
if (dev->thread.shutdown || signal_pending(current))
goto done;
restart:
dev->thread.scan1 = dev->thread.scan2;
dprintk("tvaudio thread scan start [%d]\n",dev->thread.scan1);
if (audio_ddep >= 0x04 && audio_ddep <= 0x0e) {
/* insmod option override */
norms = (audio_ddep << 2) | 0x01;
dprintk("ddep override: %s\n",stdres[audio_ddep]);
} else if (&card(dev).radio == dev->input) {
dprintk("FM Radio\n");
if (dev->tuner_type == TUNER_PHILIPS_TDA8290) {
norms = (0x11 << 2) | 0x01;
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 */
dprintk("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;
dprintk("tvaudio thread status: 0x%x [%s%s%s]\n",
value, stdres[value & 0x1f],
(value & 0x000020) ? ",stereo" : "",
(value & 0x000040) ? ",dual" : "");
dprintk("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:
complete_and_exit(&dev->thread.exit, 0);
return 0;
}
/* ------------------------------------------------------------------ */
/* common stuff + external entry points */
static void saa7134_enable_i2s(struct saa7134_dev *dev)
{
int i2s_format;
if (!card_is_empress(dev))
return;
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);
}
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;
}
int saa7134_tvaudio_init2(struct saa7134_dev *dev)
{
DECLARE_MUTEX_LOCKED(sem);
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.pid = -1;
if (my_thread) {
/* start tvaudio thread */
init_waitqueue_head(&dev->thread.wq);
init_completion(&dev->thread.exit);
dev->thread.pid = kernel_thread(my_thread,dev,0);
if (dev->thread.pid < 0)
printk(KERN_WARNING "%s: kernel_thread() failed\n",
dev->name);
saa7134_tvaudio_do_scan(dev);
}
saa7134_enable_i2s(dev);
return 0;
}
int saa7134_tvaudio_fini(struct saa7134_dev *dev)
{
/* shutdown tvaudio thread */
if (dev->thread.pid > 0) {
dev->thread.shutdown = 1;
wake_up_interruptible(&dev->thread.wq);
wait_for_completion(&dev->thread.exit);
}
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) {
dprintk("sound IF not in use, skipping scan\n");
dev->automute = 0;
saa7134_tvaudio_setmute(dev);
} else if (dev->thread.pid >= 0) {
dev->thread.mode = UNSET;
dev->thread.scan2++;
wake_up_interruptible(&dev->thread.wq);
} else {
dev->automute = 0;
saa7134_tvaudio_setmute(dev);
}
return 0;
}
EXPORT_SYMBOL(saa_dsp_writel);
EXPORT_SYMBOL(saa7134_tvaudio_setmute);
/* ----------------------------------------------------------- */
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
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