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android_kernel_xiaomi_sm8350/drivers/media/video/msp3400.c
Christoph Lameter 3e1d1d28d9 [PATCH] Cleanup patch for process freezing 
1. Establish a simple API for process freezing defined in linux/include/sched.h:

   frozen(process)		Check for frozen process
   freezing(process)		Check if a process is being frozen
   freeze(process)		Tell a process to freeze (go to refrigerator)
   thaw_process(process)	Restart process
   frozen_process(process)	Process is frozen now

2. Remove all references to PF_FREEZE and PF_FROZEN from all
   kernel sources except sched.h

3. Fix numerous locations where try_to_freeze is manually done by a driver

4. Remove the argument that is no longer necessary from two function calls.

5. Some whitespace cleanup

6. Clear potential race in refrigerator (provides an open window of PF_FREEZE
   cleared before setting PF_FROZEN, recalc_sigpending does not check
   PF_FROZEN).

This patch does not address the problem of freeze_processes() violating the rule
that a task may only modify its own flags by setting PF_FREEZE. This is not clean
in an SMP environment. freeze(process) is therefore not SMP safe!

Signed-off-by: Christoph Lameter <christoph@lameter.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 17:10:13 -07:00

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/*
* programming the msp34* sound processor family
*
* (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org>
*
* what works and what doesn't:
*
* AM-Mono
* Support for Hauppauge cards added (decoding handled by tuner) added by
* Frederic Crozat <fcrozat@mail.dotcom.fr>
*
* FM-Mono
* should work. The stereo modes are backward compatible to FM-mono,
* therefore FM-Mono should be allways available.
*
* FM-Stereo (B/G, used in germany)
* should work, with autodetect
*
* FM-Stereo (satellite)
* should work, no autodetect (i.e. default is mono, but you can
* switch to stereo -- untested)
*
* NICAM (B/G, L , used in UK, Scandinavia, Spain and France)
* should work, with autodetect. Support for NICAM was added by
* Pekka Pietikainen <pp@netppl.fi>
*
*
* TODO:
* - better SAT support
*
*
* 980623 Thomas Sailer (sailer@ife.ee.ethz.ch)
* using soundcore instead of OSS
*
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <linux/timer.h>
#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/videodev.h>
#include <linux/init.h>
#include <linux/smp_lock.h>
#include <linux/kthread.h>
#include <linux/suspend.h>
#include <asm/semaphore.h>
#include <asm/pgtable.h>
#include <media/audiochip.h>
#include <media/id.h>
#include "msp3400.h"
#define OPMODE_AUTO -1
#define OPMODE_MANUAL 0
#define OPMODE_SIMPLE 1 /* use short programming (>= msp3410 only) */
#define OPMODE_SIMPLER 2 /* use shorter programming (>= msp34xxG) */
/* insmod parameters */
static int opmode = OPMODE_AUTO;
static int debug = 0; /* debug output */
static int once = 0; /* no continous stereo monitoring */
static int amsound = 0; /* hard-wire AM sound at 6.5 Hz (france),
the autoscan seems work well only with FM... */
static int standard = 1; /* Override auto detect of audio standard, if needed. */
static int dolby = 0;
static int stereo_threshold = 0x190; /* a2 threshold for stereo/bilingual
(msp34xxg only) 0x00a0-0x03c0 */
struct msp3400c {
int rev1,rev2;
int opmode;
int mode;
int norm;
int nicam_on;
int acb;
int main, second; /* sound carrier */
int input;
int source; /* see msp34xxg_set_source */
/* v4l2 */
int audmode;
int rxsubchans;
int muted;
int volume, balance;
int bass, treble;
/* thread */
struct task_struct *kthread;
wait_queue_head_t wq;
int restart:1;
int watch_stereo:1;
};
#define HAVE_NICAM(msp) (((msp->rev2>>8) & 0xff) != 00)
#define HAVE_SIMPLE(msp) ((msp->rev1 & 0xff) >= 'D'-'@')
#define HAVE_SIMPLER(msp) ((msp->rev1 & 0xff) >= 'G'-'@')
#define HAVE_RADIO(msp) ((msp->rev1 & 0xff) >= 'G'-'@')
#define VIDEO_MODE_RADIO 16 /* norm magic for radio mode */
/* ---------------------------------------------------------------------- */
#define dprintk if (debug >= 1) printk
#define d2printk if (debug >= 2) printk
/* read-only */
module_param(opmode, int, 0444);
/* read-write */
module_param(once, int, 0644);
module_param(debug, int, 0644);
module_param(stereo_threshold, int, 0644);
module_param(standard, int, 0644);
module_param(amsound, int, 0644);
module_param(dolby, int, 0644);
MODULE_PARM_DESC(once, "No continuous stereo monitoring");
MODULE_PARM_DESC(debug, "Enable debug messages");
MODULE_PARM_DESC(standard, "Specify audio standard: 32 = NTSC, 64 = radio, Default: Autodetect");
MODULE_PARM_DESC(amsound, "Hardwire AM sound at 6.5Hz (France), FM can autoscan");
MODULE_DESCRIPTION("device driver for msp34xx TV sound processor");
MODULE_AUTHOR("Gerd Knorr");
MODULE_LICENSE("Dual BSD/GPL"); /* FreeBSD uses this too */
/* ---------------------------------------------------------------------- */
#define I2C_MSP3400C 0x80
#define I2C_MSP3400C_ALT 0x88
#define I2C_MSP3400C_DEM 0x10
#define I2C_MSP3400C_DFP 0x12
/* Addresses to scan */
static unsigned short normal_i2c[] = {
I2C_MSP3400C >> 1,
I2C_MSP3400C_ALT >> 1,
I2C_CLIENT_END
};
I2C_CLIENT_INSMOD;
/* ----------------------------------------------------------------------- */
/* functions for talking to the MSP3400C Sound processor */
static int msp3400c_reset(struct i2c_client *client)
{
/* reset and read revision code */
static char reset_off[3] = { 0x00, 0x80, 0x00 };
static char reset_on[3] = { 0x00, 0x00, 0x00 };
static char write[3] = { I2C_MSP3400C_DFP + 1, 0x00, 0x1e };
char read[2];
struct i2c_msg reset[2] = {
{ client->addr, I2C_M_IGNORE_NAK, 3, reset_off },
{ client->addr, I2C_M_IGNORE_NAK, 3, reset_on },
};
struct i2c_msg test[2] = {
{ client->addr, 0, 3, write },
{ client->addr, I2C_M_RD, 2, read },
};
if ( (1 != i2c_transfer(client->adapter,&reset[0],1)) ||
(1 != i2c_transfer(client->adapter,&reset[1],1)) ||
(2 != i2c_transfer(client->adapter,test,2)) ) {
printk(KERN_ERR "msp3400: chip reset failed\n");
return -1;
}
return 0;
}
static int
msp3400c_read(struct i2c_client *client, int dev, int addr)
{
int err;
unsigned char write[3];
unsigned char read[2];
struct i2c_msg msgs[2] = {
{ client->addr, 0, 3, write },
{ client->addr, I2C_M_RD, 2, read }
};
write[0] = dev+1;
write[1] = addr >> 8;
write[2] = addr & 0xff;
for (err = 0; err < 3;) {
if (2 == i2c_transfer(client->adapter,msgs,2))
break;
err++;
printk(KERN_WARNING "msp34xx: I/O error #%d (read 0x%02x/0x%02x)\n",
err, dev, addr);
msleep(10);
}
if (3 == err) {
printk(KERN_WARNING "msp34xx: giving up, reseting chip. Sound will go off, sorry folks :-|\n");
msp3400c_reset(client);
return -1;
}
return read[0] << 8 | read[1];
}
static int
msp3400c_write(struct i2c_client *client, int dev, int addr, int val)
{
int err;
unsigned char buffer[5];
buffer[0] = dev;
buffer[1] = addr >> 8;
buffer[2] = addr & 0xff;
buffer[3] = val >> 8;
buffer[4] = val & 0xff;
for (err = 0; err < 3;) {
if (5 == i2c_master_send(client, buffer, 5))
break;
err++;
printk(KERN_WARNING "msp34xx: I/O error #%d (write 0x%02x/0x%02x)\n",
err, dev, addr);
msleep(10);
}
if (3 == err) {
printk(KERN_WARNING "msp34xx: giving up, reseting chip. Sound will go off, sorry folks :-|\n");
msp3400c_reset(client);
return -1;
}
return 0;
}
/* ------------------------------------------------------------------------ */
/* This macro is allowed for *constants* only, gcc must calculate it
at compile time. Remember -- no floats in kernel mode */
#define MSP_CARRIER(freq) ((int)((float)(freq/18.432)*(1<<24)))
#define MSP_MODE_AM_DETECT 0
#define MSP_MODE_FM_RADIO 2
#define MSP_MODE_FM_TERRA 3
#define MSP_MODE_FM_SAT 4
#define MSP_MODE_FM_NICAM1 5
#define MSP_MODE_FM_NICAM2 6
#define MSP_MODE_AM_NICAM 7
#define MSP_MODE_BTSC 8
#define MSP_MODE_EXTERN 9
static struct MSP_INIT_DATA_DEM {
int fir1[6];
int fir2[6];
int cdo1;
int cdo2;
int ad_cv;
int mode_reg;
int dfp_src;
int dfp_matrix;
} msp_init_data[] = {
/* AM (for carrier detect / msp3400) */
{ { 75, 19, 36, 35, 39, 40 }, { 75, 19, 36, 35, 39, 40 },
MSP_CARRIER(5.5), MSP_CARRIER(5.5),
0x00d0, 0x0500, 0x0020, 0x3000},
/* AM (for carrier detect / msp3410) */
{ { -1, -1, -8, 2, 59, 126 }, { -1, -1, -8, 2, 59, 126 },
MSP_CARRIER(5.5), MSP_CARRIER(5.5),
0x00d0, 0x0100, 0x0020, 0x3000},
/* FM Radio */
{ { -8, -8, 4, 6, 78, 107 }, { -8, -8, 4, 6, 78, 107 },
MSP_CARRIER(10.7), MSP_CARRIER(10.7),
0x00d0, 0x0480, 0x0020, 0x3000 },
/* Terrestial FM-mono + FM-stereo */
{ { 3, 18, 27, 48, 66, 72 }, { 3, 18, 27, 48, 66, 72 },
MSP_CARRIER(5.5), MSP_CARRIER(5.5),
0x00d0, 0x0480, 0x0030, 0x3000},
/* Sat FM-mono */
{ { 1, 9, 14, 24, 33, 37 }, { 3, 18, 27, 48, 66, 72 },
MSP_CARRIER(6.5), MSP_CARRIER(6.5),
0x00c6, 0x0480, 0x0000, 0x3000},
/* NICAM/FM -- B/G (5.5/5.85), D/K (6.5/5.85) */
{ { -2, -8, -10, 10, 50, 86 }, { 3, 18, 27, 48, 66, 72 },
MSP_CARRIER(5.5), MSP_CARRIER(5.5),
0x00d0, 0x0040, 0x0120, 0x3000},
/* NICAM/FM -- I (6.0/6.552) */
{ { 2, 4, -6, -4, 40, 94 }, { 3, 18, 27, 48, 66, 72 },
MSP_CARRIER(6.0), MSP_CARRIER(6.0),
0x00d0, 0x0040, 0x0120, 0x3000},
/* NICAM/AM -- L (6.5/5.85) */
{ { -2, -8, -10, 10, 50, 86 }, { -4, -12, -9, 23, 79, 126 },
MSP_CARRIER(6.5), MSP_CARRIER(6.5),
0x00c6, 0x0140, 0x0120, 0x7c03},
};
struct CARRIER_DETECT {
int cdo;
char *name;
};
static struct CARRIER_DETECT 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 CARRIER_DETECT 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 CARRIER_DETECT 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" },
};
#define CARRIER_COUNT(x) (sizeof(x)/sizeof(struct CARRIER_DETECT))
/* ----------------------------------------------------------------------- */
static int scarts[3][9] = {
/* MASK IN1 IN2 IN1_DA IN2_DA IN3 IN4 MONO MUTE */
{ 0x0320, 0x0000, 0x0200, -1, -1, 0x0300, 0x0020, 0x0100, 0x0320 },
{ 0x0c40, 0x0440, 0x0400, 0x0c00, 0x0040, 0x0000, 0x0840, 0x0800, 0x0c40 },
{ 0x3080, 0x1000, 0x1080, 0x0000, 0x0080, 0x2080, 0x3080, 0x2000, 0x3000 },
};
static char *scart_names[] = {
"mask", "in1", "in2", "in1 da", "in2 da", "in3", "in4", "mono", "mute"
};
static void
msp3400c_set_scart(struct i2c_client *client, int in, int out)
{
struct msp3400c *msp = i2c_get_clientdata(client);
if (-1 == scarts[out][in])
return;
dprintk(KERN_DEBUG
"msp34xx: scart switch: %s => %d\n",scart_names[in],out);
msp->acb &= ~scarts[out][SCART_MASK];
msp->acb |= scarts[out][in];
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0013, msp->acb);
}
/* ------------------------------------------------------------------------ */
static void msp3400c_setcarrier(struct i2c_client *client, int cdo1, int cdo2)
{
msp3400c_write(client,I2C_MSP3400C_DEM, 0x0093, cdo1 & 0xfff);
msp3400c_write(client,I2C_MSP3400C_DEM, 0x009b, cdo1 >> 12);
msp3400c_write(client,I2C_MSP3400C_DEM, 0x00a3, cdo2 & 0xfff);
msp3400c_write(client,I2C_MSP3400C_DEM, 0x00ab, cdo2 >> 12);
msp3400c_write(client,I2C_MSP3400C_DEM, 0x0056, 0); /*LOAD_REG_1/2*/
}
static void msp3400c_setvolume(struct i2c_client *client,
int muted, int volume, int balance)
{
int val = 0, bal = 0;
if (!muted) {
/* 0x7f instead if 0x73 here has sound quality issues,
* probably due to overmodulation + clipping ... */
val = (volume * 0x73 / 65535) << 8;
}
if (val) {
bal = (balance / 256) - 128;
}
dprintk(KERN_DEBUG
"msp34xx: setvolume: mute=%s %d:%d v=0x%02x b=0x%02x\n",
muted ? "on" : "off", volume, balance, val>>8, bal);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0000, val); /* loudspeaker */
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0006, val); /* headphones */
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0007,
muted ? 0x01 : (val | 0x01));
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0001, bal << 8);
}
static void msp3400c_setbass(struct i2c_client *client, int bass)
{
int val = ((bass-32768) * 0x60 / 65535) << 8;
dprintk(KERN_DEBUG "msp34xx: setbass: %d 0x%02x\n",bass, val>>8);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0002, val); /* loudspeaker */
}
static void msp3400c_settreble(struct i2c_client *client, int treble)
{
int val = ((treble-32768) * 0x60 / 65535) << 8;
dprintk(KERN_DEBUG "msp34xx: settreble: %d 0x%02x\n",treble, val>>8);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0003, val); /* loudspeaker */
}
static void msp3400c_setmode(struct i2c_client *client, int type)
{
struct msp3400c *msp = i2c_get_clientdata(client);
int i;
dprintk(KERN_DEBUG "msp3400: setmode: %d\n",type);
msp->mode = type;
msp->audmode = V4L2_TUNER_MODE_MONO;
msp->rxsubchans = V4L2_TUNER_SUB_MONO;
msp3400c_write(client,I2C_MSP3400C_DEM, 0x00bb, /* ad_cv */
msp_init_data[type].ad_cv);
for (i = 5; i >= 0; i--) /* fir 1 */
msp3400c_write(client,I2C_MSP3400C_DEM, 0x0001,
msp_init_data[type].fir1[i]);
msp3400c_write(client,I2C_MSP3400C_DEM, 0x0005, 0x0004); /* fir 2 */
msp3400c_write(client,I2C_MSP3400C_DEM, 0x0005, 0x0040);
msp3400c_write(client,I2C_MSP3400C_DEM, 0x0005, 0x0000);
for (i = 5; i >= 0; i--)
msp3400c_write(client,I2C_MSP3400C_DEM, 0x0005,
msp_init_data[type].fir2[i]);
msp3400c_write(client,I2C_MSP3400C_DEM, 0x0083, /* MODE_REG */
msp_init_data[type].mode_reg);
msp3400c_setcarrier(client, msp_init_data[type].cdo1,
msp_init_data[type].cdo2);
msp3400c_write(client,I2C_MSP3400C_DEM, 0x0056, 0); /*LOAD_REG_1/2*/
if (dolby) {
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0008,
0x0520); /* I2S1 */
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0009,
0x0620); /* I2S2 */
msp3400c_write(client,I2C_MSP3400C_DFP, 0x000b,
msp_init_data[type].dfp_src);
} else {
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0008,
msp_init_data[type].dfp_src);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0009,
msp_init_data[type].dfp_src);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x000b,
msp_init_data[type].dfp_src);
}
msp3400c_write(client,I2C_MSP3400C_DFP, 0x000a,
msp_init_data[type].dfp_src);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x000e,
msp_init_data[type].dfp_matrix);
if (HAVE_NICAM(msp)) {
/* nicam prescale */
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0010, 0x5a00); /* was: 0x3000 */
}
}
static int best_audio_mode(int rxsubchans)
{
if (rxsubchans & V4L2_TUNER_SUB_STEREO)
return V4L2_TUNER_MODE_STEREO;
if (rxsubchans & V4L2_TUNER_SUB_LANG1)
return V4L2_TUNER_MODE_LANG1;
if (rxsubchans & V4L2_TUNER_SUB_LANG2)
return V4L2_TUNER_MODE_LANG2;
return V4L2_TUNER_MODE_MONO;
}
/* turn on/off nicam + stereo */
static void msp3400c_set_audmode(struct i2c_client *client, int audmode)
{
static char *strmode[16] = {
#if __GNUC__ >= 3
[ 0 ... 15 ] = "invalid",
#endif
[ V4L2_TUNER_MODE_MONO ] = "mono",
[ V4L2_TUNER_MODE_STEREO ] = "stereo",
[ V4L2_TUNER_MODE_LANG1 ] = "lang1",
[ V4L2_TUNER_MODE_LANG2 ] = "lang2",
};
struct msp3400c *msp = i2c_get_clientdata(client);
int nicam=0; /* channel source: FM/AM or nicam */
int src=0;
BUG_ON(msp->opmode == OPMODE_SIMPLER);
msp->audmode = audmode;
/* switch demodulator */
switch (msp->mode) {
case MSP_MODE_FM_TERRA:
dprintk(KERN_DEBUG "msp3400: FM setstereo: %s\n",
strmode[audmode]);
msp3400c_setcarrier(client,msp->second,msp->main);
switch (audmode) {
case V4L2_TUNER_MODE_STEREO:
msp3400c_write(client,I2C_MSP3400C_DFP, 0x000e, 0x3001);
break;
case V4L2_TUNER_MODE_MONO:
case V4L2_TUNER_MODE_LANG1:
case V4L2_TUNER_MODE_LANG2:
msp3400c_write(client,I2C_MSP3400C_DFP, 0x000e, 0x3000);
break;
}
break;
case MSP_MODE_FM_SAT:
dprintk(KERN_DEBUG "msp3400: SAT setstereo: %s\n",
strmode[audmode]);
switch (audmode) {
case V4L2_TUNER_MODE_MONO:
msp3400c_setcarrier(client, MSP_CARRIER(6.5), MSP_CARRIER(6.5));
break;
case V4L2_TUNER_MODE_STEREO:
msp3400c_setcarrier(client, MSP_CARRIER(7.2), MSP_CARRIER(7.02));
break;
case V4L2_TUNER_MODE_LANG1:
msp3400c_setcarrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
break;
case V4L2_TUNER_MODE_LANG2:
msp3400c_setcarrier(client, MSP_CARRIER(7.38), MSP_CARRIER(7.02));
break;
}
break;
case MSP_MODE_FM_NICAM1:
case MSP_MODE_FM_NICAM2:
case MSP_MODE_AM_NICAM:
dprintk(KERN_DEBUG "msp3400: NICAM setstereo: %s\n",
strmode[audmode]);
msp3400c_setcarrier(client,msp->second,msp->main);
if (msp->nicam_on)
nicam=0x0100;
break;
case MSP_MODE_BTSC:
dprintk(KERN_DEBUG "msp3400: BTSC setstereo: %s\n",
strmode[audmode]);
nicam=0x0300;
break;
case MSP_MODE_EXTERN:
dprintk(KERN_DEBUG "msp3400: extern setstereo: %s\n",
strmode[audmode]);
nicam = 0x0200;
break;
case MSP_MODE_FM_RADIO:
dprintk(KERN_DEBUG "msp3400: FM-Radio setstereo: %s\n",
strmode[audmode]);
break;
default:
dprintk(KERN_DEBUG "msp3400: mono setstereo\n");
return;
}
/* switch audio */
switch (audmode) {
case V4L2_TUNER_MODE_STEREO:
src = 0x0020 | nicam;
#if 0
/* spatial effect */
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0005,0x4000);
#endif
break;
case V4L2_TUNER_MODE_MONO:
if (msp->mode == MSP_MODE_AM_NICAM) {
dprintk("msp3400: switching to AM mono\n");
/* AM mono decoding is handled by tuner, not MSP chip */
/* SCART switching control register */
msp3400c_set_scart(client,SCART_MONO,0);
src = 0x0200;
break;
}
case V4L2_TUNER_MODE_LANG1:
src = 0x0000 | nicam;
break;
case V4L2_TUNER_MODE_LANG2:
src = 0x0010 | nicam;
break;
}
dprintk(KERN_DEBUG
"msp3400: setstereo final source/matrix = 0x%x\n", src);
if (dolby) {
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0008,0x0520);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0009,0x0620);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x000a,src);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x000b,src);
} else {
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0008,src);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0009,src);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x000a,src);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x000b,src);
}
}
static void
msp3400c_print_mode(struct msp3400c *msp)
{
if (msp->main == msp->second) {
printk(KERN_DEBUG "msp3400: mono sound carrier: %d.%03d MHz\n",
msp->main/910000,(msp->main/910)%1000);
} else {
printk(KERN_DEBUG "msp3400: main sound carrier: %d.%03d MHz\n",
msp->main/910000,(msp->main/910)%1000);
}
if (msp->mode == MSP_MODE_FM_NICAM1 ||
msp->mode == MSP_MODE_FM_NICAM2)
printk(KERN_DEBUG "msp3400: NICAM/FM carrier : %d.%03d MHz\n",
msp->second/910000,(msp->second/910)%1000);
if (msp->mode == MSP_MODE_AM_NICAM)
printk(KERN_DEBUG "msp3400: NICAM/AM carrier : %d.%03d MHz\n",
msp->second/910000,(msp->second/910)%1000);
if (msp->mode == MSP_MODE_FM_TERRA &&
msp->main != msp->second) {
printk(KERN_DEBUG "msp3400: FM-stereo carrier : %d.%03d MHz\n",
msp->second/910000,(msp->second/910)%1000);
}
}
/* ----------------------------------------------------------------------- */
struct REGISTER_DUMP {
int addr;
char *name;
};
static int
autodetect_stereo(struct i2c_client *client)
{
struct msp3400c *msp = i2c_get_clientdata(client);
int val;
int rxsubchans = msp->rxsubchans;
int newnicam = msp->nicam_on;
int update = 0;
switch (msp->mode) {
case MSP_MODE_FM_TERRA:
val = msp3400c_read(client, I2C_MSP3400C_DFP, 0x18);
if (val > 32767)
val -= 65536;
dprintk(KERN_DEBUG
"msp34xx: stereo detect register: %d\n",val);
if (val > 4096) {
rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_MONO;
} else if (val < -4096) {
rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2;
} else {
rxsubchans = V4L2_TUNER_SUB_MONO;
}
newnicam = 0;
break;
case MSP_MODE_FM_NICAM1:
case MSP_MODE_FM_NICAM2:
case MSP_MODE_AM_NICAM:
val = msp3400c_read(client, I2C_MSP3400C_DEM, 0x23);
dprintk(KERN_DEBUG
"msp34xx: nicam sync=%d, mode=%d\n",
val & 1, (val & 0x1e) >> 1);
if (val & 1) {
/* nicam synced */
switch ((val & 0x1e) >> 1) {
case 0:
case 8:
rxsubchans = V4L2_TUNER_SUB_STEREO;
break;
case 1:
case 9:
rxsubchans = V4L2_TUNER_SUB_MONO
| V4L2_TUNER_SUB_LANG1;
break;
case 2:
case 10:
rxsubchans = V4L2_TUNER_SUB_MONO
| V4L2_TUNER_SUB_LANG1
| V4L2_TUNER_SUB_LANG2;
break;
default:
rxsubchans = V4L2_TUNER_SUB_MONO;
break;
}
newnicam=1;
} else {
newnicam = 0;
rxsubchans = V4L2_TUNER_SUB_MONO;
}
break;
case MSP_MODE_BTSC:
val = msp3400c_read(client, I2C_MSP3400C_DEM, 0x200);
dprintk(KERN_DEBUG
"msp3410: status=0x%x (pri=%s, sec=%s, %s%s%s)\n",
val,
(val & 0x0002) ? "no" : "yes",
(val & 0x0004) ? "no" : "yes",
(val & 0x0040) ? "stereo" : "mono",
(val & 0x0080) ? ", nicam 2nd mono" : "",
(val & 0x0100) ? ", bilingual/SAP" : "");
rxsubchans = V4L2_TUNER_SUB_MONO;
if (val & 0x0040) rxsubchans |= V4L2_TUNER_SUB_STEREO;
if (val & 0x0100) rxsubchans |= V4L2_TUNER_SUB_LANG1;
break;
}
if (rxsubchans != msp->rxsubchans) {
update = 1;
dprintk(KERN_DEBUG "msp34xx: watch: rxsubchans %d => %d\n",
msp->rxsubchans,rxsubchans);
msp->rxsubchans = rxsubchans;
}
if (newnicam != msp->nicam_on) {
update = 1;
dprintk(KERN_DEBUG "msp34xx: watch: nicam %d => %d\n",
msp->nicam_on,newnicam);
msp->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
*/
static int msp34xx_sleep(struct msp3400c *msp, int timeout)
{
DECLARE_WAITQUEUE(wait, current);
add_wait_queue(&msp->wq, &wait);
if (!kthread_should_stop()) {
if (timeout < 0) {
set_current_state(TASK_INTERRUPTIBLE);
schedule();
} else {
#if 0
/* hmm, that one doesn't return on wakeup ... */
msleep_interruptible(timeout);
#else
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(timeout));
#endif
}
}
try_to_freeze();
remove_wait_queue(&msp->wq, &wait);
return msp->restart;
}
/* stereo/multilang monitoring */
static void watch_stereo(struct i2c_client *client)
{
struct msp3400c *msp = i2c_get_clientdata(client);
if (autodetect_stereo(client))
msp3400c_set_audmode(client,best_audio_mode(msp->rxsubchans));
if (once)
msp->watch_stereo = 0;
}
static int msp3400c_thread(void *data)
{
struct i2c_client *client = data;
struct msp3400c *msp = i2c_get_clientdata(client);
struct CARRIER_DETECT *cd;
int count, max1,max2,val1,val2, val,this;
printk("msp3400: kthread started\n");
for (;;) {
d2printk("msp3400: thread: sleep\n");
msp34xx_sleep(msp,-1);
d2printk("msp3400: thread: wakeup\n");
restart:
dprintk("msp3410: thread: restart scan\n");
msp->restart = 0;
if (kthread_should_stop())
break;
if (VIDEO_MODE_RADIO == msp->norm ||
MSP_MODE_EXTERN == msp->mode) {
/* no carrier scan, just unmute */
printk("msp3400: thread: no carrier scan\n");
msp3400c_setvolume(client, msp->muted,
msp->volume, msp->balance);
continue;
}
/* mute */
msp3400c_setvolume(client, msp->muted, 0, 0);
msp3400c_setmode(client, MSP_MODE_AM_DETECT /* +1 */ );
val1 = val2 = 0;
max1 = max2 = -1;
msp->watch_stereo = 0;
/* some time for the tuner to sync */
if (msp34xx_sleep(msp,200))
goto restart;
/* carrier detect pass #1 -- main carrier */
cd = carrier_detect_main; count = CARRIER_COUNT(carrier_detect_main);
if (amsound && (msp->norm == VIDEO_MODE_SECAM)) {
/* autodetect doesn't work well with AM ... */
max1 = 3;
count = 0;
dprintk("msp3400: AM sound override\n");
}
for (this = 0; this < count; this++) {
msp3400c_setcarrier(client, cd[this].cdo,cd[this].cdo);
if (msp34xx_sleep(msp,100))
goto restart;
val = msp3400c_read(client, I2C_MSP3400C_DFP, 0x1b);
if (val > 32767)
val -= 65536;
if (val1 < val)
val1 = val, max1 = this;
dprintk("msp3400: carrier1 val: %5d / %s\n", val,cd[this].name);
}
/* carrier detect pass #2 -- second (stereo) carrier */
switch (max1) {
case 1: /* 5.5 */
cd = carrier_detect_55;
count = CARRIER_COUNT(carrier_detect_55);
break;
case 3: /* 6.5 */
cd = carrier_detect_65;
count = CARRIER_COUNT(carrier_detect_65);
break;
case 0: /* 4.5 */
case 2: /* 6.0 */
default:
cd = NULL; count = 0;
break;
}
if (amsound && (msp->norm == VIDEO_MODE_SECAM)) {
/* autodetect doesn't work well with AM ... */
cd = NULL; count = 0; max2 = 0;
}
for (this = 0; this < count; this++) {
msp3400c_setcarrier(client, cd[this].cdo,cd[this].cdo);
if (msp34xx_sleep(msp,100))
goto restart;
val = msp3400c_read(client, I2C_MSP3400C_DFP, 0x1b);
if (val > 32767)
val -= 65536;
if (val2 < val)
val2 = val, max2 = this;
dprintk("msp3400: carrier2 val: %5d / %s\n", val,cd[this].name);
}
/* programm the msp3400 according to the results */
msp->main = carrier_detect_main[max1].cdo;
switch (max1) {
case 1: /* 5.5 */
if (max2 == 0) {
/* B/G FM-stereo */
msp->second = carrier_detect_55[max2].cdo;
msp3400c_setmode(client, MSP_MODE_FM_TERRA);
msp->nicam_on = 0;
msp3400c_set_audmode(client, V4L2_TUNER_MODE_MONO);
msp->watch_stereo = 1;
} else if (max2 == 1 && HAVE_NICAM(msp)) {
/* B/G NICAM */
msp->second = carrier_detect_55[max2].cdo;
msp3400c_setmode(client, MSP_MODE_FM_NICAM1);
msp->nicam_on = 1;
msp3400c_setcarrier(client, msp->second, msp->main);
msp->watch_stereo = 1;
} else {
goto no_second;
}
break;
case 2: /* 6.0 */
/* PAL I NICAM */
msp->second = MSP_CARRIER(6.552);
msp3400c_setmode(client, MSP_MODE_FM_NICAM2);
msp->nicam_on = 1;
msp3400c_setcarrier(client, msp->second, msp->main);
msp->watch_stereo = 1;
break;
case 3: /* 6.5 */
if (max2 == 1 || max2 == 2) {
/* D/K FM-stereo */
msp->second = carrier_detect_65[max2].cdo;
msp3400c_setmode(client, MSP_MODE_FM_TERRA);
msp->nicam_on = 0;
msp3400c_set_audmode(client, V4L2_TUNER_MODE_MONO);
msp->watch_stereo = 1;
} else if (max2 == 0 &&
msp->norm == VIDEO_MODE_SECAM) {
/* L NICAM or AM-mono */
msp->second = carrier_detect_65[max2].cdo;
msp3400c_setmode(client, MSP_MODE_AM_NICAM);
msp->nicam_on = 0;
msp3400c_set_audmode(client, V4L2_TUNER_MODE_MONO);
msp3400c_setcarrier(client, msp->second, msp->main);
/* volume prescale for SCART (AM mono input) */
msp3400c_write(client,I2C_MSP3400C_DFP, 0x000d, 0x1900);
msp->watch_stereo = 1;
} else if (max2 == 0 && HAVE_NICAM(msp)) {
/* D/K NICAM */
msp->second = carrier_detect_65[max2].cdo;
msp3400c_setmode(client, MSP_MODE_FM_NICAM1);
msp->nicam_on = 1;
msp3400c_setcarrier(client, msp->second, msp->main);
msp->watch_stereo = 1;
} else {
goto no_second;
}
break;
case 0: /* 4.5 */
default:
no_second:
msp->second = carrier_detect_main[max1].cdo;
msp3400c_setmode(client, MSP_MODE_FM_TERRA);
msp->nicam_on = 0;
msp3400c_setcarrier(client, msp->second, msp->main);
msp->rxsubchans = V4L2_TUNER_SUB_MONO;
msp3400c_set_audmode(client, V4L2_TUNER_MODE_MONO);
break;
}
/* unmute */
msp3400c_setvolume(client, msp->muted,
msp->volume, msp->balance);
if (debug)
msp3400c_print_mode(msp);
/* monitor tv audio mode */
while (msp->watch_stereo) {
if (msp34xx_sleep(msp,5000))
goto restart;
watch_stereo(client);
}
}
dprintk(KERN_DEBUG "msp3400: thread: exit\n");
return 0;
}
/* ----------------------------------------------------------------------- */
/* this one uses the automatic sound standard detection of newer */
/* msp34xx chip versions */
static struct MODES {
int retval;
int main, second;
char *name;
} modelist[] = {
{ 0x0000, 0, 0, "ERROR" },
{ 0x0001, 0, 0, "autodetect start" },
{ 0x0002, MSP_CARRIER(4.5), MSP_CARRIER(4.72), "4.5/4.72 M Dual FM-Stereo" },
{ 0x0003, MSP_CARRIER(5.5), MSP_CARRIER(5.7421875), "5.5/5.74 B/G Dual FM-Stereo" },
{ 0x0004, MSP_CARRIER(6.5), MSP_CARRIER(6.2578125), "6.5/6.25 D/K1 Dual FM-Stereo" },
{ 0x0005, MSP_CARRIER(6.5), MSP_CARRIER(6.7421875), "6.5/6.74 D/K2 Dual FM-Stereo" },
{ 0x0006, MSP_CARRIER(6.5), MSP_CARRIER(6.5), "6.5 D/K FM-Mono (HDEV3)" },
{ 0x0008, MSP_CARRIER(5.5), MSP_CARRIER(5.85), "5.5/5.85 B/G NICAM FM" },
{ 0x0009, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 L NICAM AM" },
{ 0x000a, MSP_CARRIER(6.0), MSP_CARRIER(6.55), "6.0/6.55 I NICAM FM" },
{ 0x000b, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM" },
{ 0x000c, MSP_CARRIER(6.5), MSP_CARRIER(5.85), "6.5/5.85 D/K NICAM FM (HDEV2)" },
{ 0x0020, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M BTSC-Stereo" },
{ 0x0021, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M BTSC-Mono + SAP" },
{ 0x0030, MSP_CARRIER(4.5), MSP_CARRIER(4.5), "4.5 M EIA-J Japan Stereo" },
{ 0x0040, MSP_CARRIER(10.7), MSP_CARRIER(10.7), "10.7 FM-Stereo Radio" },
{ 0x0050, MSP_CARRIER(6.5), MSP_CARRIER(6.5), "6.5 SAT-Mono" },
{ 0x0051, MSP_CARRIER(7.02), MSP_CARRIER(7.20), "7.02/7.20 SAT-Stereo" },
{ 0x0060, MSP_CARRIER(7.2), MSP_CARRIER(7.2), "7.2 SAT ADR" },
{ -1, 0, 0, NULL }, /* EOF */
};
static inline const char *msp34xx_standard_mode_name(int mode)
{
int i;
for (i = 0; modelist[i].name != NULL; i++)
if (modelist[i].retval == mode)
return modelist[i].name;
return "unknown";
}
static int msp34xx_modus(int norm)
{
switch (norm) {
case VIDEO_MODE_PAL:
#if 1
/* experimental: not sure this works with all chip versions */
return 0x7003;
#else
/* previous value, try this if it breaks ... */
return 0x1003;
#endif
case VIDEO_MODE_NTSC: /* BTSC */
return 0x2003;
case VIDEO_MODE_SECAM:
return 0x0003;
case VIDEO_MODE_RADIO:
return 0x0003;
case VIDEO_MODE_AUTO:
return 0x2003;
default:
return 0x0003;
}
}
static int msp34xx_standard(int norm)
{
switch (norm) {
case VIDEO_MODE_PAL:
return 1;
case VIDEO_MODE_NTSC: /* BTSC */
return 0x0020;
case VIDEO_MODE_SECAM:
return 1;
case VIDEO_MODE_RADIO:
return 0x0040;
default:
return 1;
}
}
static int msp3410d_thread(void *data)
{
struct i2c_client *client = data;
struct msp3400c *msp = i2c_get_clientdata(client);
int mode,val,i,std;
printk("msp3410: daemon started\n");
for (;;) {
d2printk(KERN_DEBUG "msp3410: thread: sleep\n");
msp34xx_sleep(msp,-1);
d2printk(KERN_DEBUG "msp3410: thread: wakeup\n");
restart:
dprintk("msp3410: thread: restart scan\n");
msp->restart = 0;
if (kthread_should_stop())
break;
if (msp->mode == MSP_MODE_EXTERN) {
/* no carrier scan needed, just unmute */
dprintk(KERN_DEBUG "msp3410: thread: no carrier scan\n");
msp3400c_setvolume(client, msp->muted,
msp->volume, msp->balance);
continue;
}
/* put into sane state (and mute) */
msp3400c_reset(client);
/* some time for the tuner to sync */
if (msp34xx_sleep(msp,200))
goto restart;
/* start autodetect */
mode = msp34xx_modus(msp->norm);
std = msp34xx_standard(msp->norm);
msp3400c_write(client, I2C_MSP3400C_DEM, 0x30, mode);
msp3400c_write(client, I2C_MSP3400C_DEM, 0x20, std);
msp->watch_stereo = 0;
if (debug)
printk(KERN_DEBUG "msp3410: setting mode: %s (0x%04x)\n",
msp34xx_standard_mode_name(std) ,std);
if (std != 1) {
/* programmed some specific mode */
val = std;
} else {
/* triggered autodetect */
for (;;) {
if (msp34xx_sleep(msp,100))
goto restart;
/* check results */
val = msp3400c_read(client, I2C_MSP3400C_DEM, 0x7e);
if (val < 0x07ff)
break;
dprintk(KERN_DEBUG "msp3410: detection still in progress\n");
}
}
for (i = 0; modelist[i].name != NULL; i++)
if (modelist[i].retval == val)
break;
dprintk(KERN_DEBUG "msp3410: current mode: %s (0x%04x)\n",
modelist[i].name ? modelist[i].name : "unknown",
val);
msp->main = modelist[i].main;
msp->second = modelist[i].second;
if (amsound && (msp->norm == VIDEO_MODE_SECAM) && (val != 0x0009)) {
/* autodetection has failed, let backup */
dprintk(KERN_DEBUG "msp3410: autodetection failed,"
" switching to backup mode: %s (0x%04x)\n",
modelist[8].name ? modelist[8].name : "unknown",val);
val = 0x0009;
msp3400c_write(client, I2C_MSP3400C_DEM, 0x20, val);
}
/* set various prescales */
msp3400c_write(client, I2C_MSP3400C_DFP, 0x0d, 0x1900); /* scart */
msp3400c_write(client, I2C_MSP3400C_DFP, 0x0e, 0x2403); /* FM */
msp3400c_write(client, I2C_MSP3400C_DFP, 0x10, 0x5a00); /* nicam */
/* set stereo */
switch (val) {
case 0x0008: /* B/G NICAM */
case 0x000a: /* I NICAM */
if (val == 0x0008)
msp->mode = MSP_MODE_FM_NICAM1;
else
msp->mode = MSP_MODE_FM_NICAM2;
/* just turn on stereo */
msp->rxsubchans = V4L2_TUNER_SUB_STEREO;
msp->nicam_on = 1;
msp->watch_stereo = 1;
msp3400c_set_audmode(client,V4L2_TUNER_MODE_STEREO);
break;
case 0x0009:
msp->mode = MSP_MODE_AM_NICAM;
msp->rxsubchans = V4L2_TUNER_SUB_MONO;
msp->nicam_on = 1;
msp3400c_set_audmode(client,V4L2_TUNER_MODE_MONO);
msp->watch_stereo = 1;
break;
case 0x0020: /* BTSC */
/* just turn on stereo */
msp->mode = MSP_MODE_BTSC;
msp->rxsubchans = V4L2_TUNER_SUB_STEREO;
msp->nicam_on = 0;
msp->watch_stereo = 1;
msp3400c_set_audmode(client,V4L2_TUNER_MODE_STEREO);
break;
case 0x0040: /* FM radio */
msp->mode = MSP_MODE_FM_RADIO;
msp->rxsubchans = V4L2_TUNER_SUB_STEREO;
msp->audmode = V4L2_TUNER_MODE_STEREO;
msp->nicam_on = 0;
msp->watch_stereo = 0;
/* not needed in theory if HAVE_RADIO(), but
short programming enables carrier mute */
msp3400c_setmode(client,MSP_MODE_FM_RADIO);
msp3400c_setcarrier(client, MSP_CARRIER(10.7),
MSP_CARRIER(10.7));
/* scart routing */
msp3400c_set_scart(client,SCART_IN2,0);
#if 0
/* radio from SCART_IN2 */
msp3400c_write(client,I2C_MSP3400C_DFP, 0x08, 0x0220);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x09, 0x0220);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0b, 0x0220);
#else
/* msp34xx does radio decoding */
msp3400c_write(client,I2C_MSP3400C_DFP, 0x08, 0x0020);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x09, 0x0020);
msp3400c_write(client,I2C_MSP3400C_DFP, 0x0b, 0x0020);
#endif
break;
case 0x0003:
case 0x0004:
case 0x0005:
msp->mode = MSP_MODE_FM_TERRA;
msp->rxsubchans = V4L2_TUNER_SUB_MONO;
msp->audmode = V4L2_TUNER_MODE_MONO;
msp->nicam_on = 0;
msp->watch_stereo = 1;
break;
}
/* unmute, restore misc registers */
msp3400c_setbass(client, msp->bass);
msp3400c_settreble(client, msp->treble);
msp3400c_setvolume(client, msp->muted,
msp->volume, msp->balance);
msp3400c_write(client, I2C_MSP3400C_DFP, 0x0013, msp->acb);
/* monitor tv audio mode */
while (msp->watch_stereo) {
if (msp34xx_sleep(msp,5000))
goto restart;
watch_stereo(client);
}
}
dprintk(KERN_DEBUG "msp3410: thread: exit\n");
return 0;
}
/* ----------------------------------------------------------------------- */
/* msp34xxG + (simpler 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 void msp34xxg_set_source(struct i2c_client *client, int source);
/* (re-)initialize the msp34xxg, according to the current norm in msp->norm
* return 0 if it worked, -1 if it failed
*/
static int msp34xxg_init(struct i2c_client *client)
{
struct msp3400c *msp = i2c_get_clientdata(client);
int modus,std;
if (msp3400c_reset(client))
return -1;
/* make sure that input/output is muted (paranoid mode) */
if (msp3400c_write(client,
I2C_MSP3400C_DFP,
0x13, /* ACB */
0x0f20 /* mute DSP input, mute SCART 1 */))
return -1;
/* step-by-step initialisation, as described in the manual */
modus = msp34xx_modus(msp->norm);
std = msp34xx_standard(msp->norm);
modus &= ~0x03; /* STATUS_CHANGE=0 */
modus |= 0x01; /* AUTOMATIC_SOUND_DETECTION=1 */
if (msp3400c_write(client,
I2C_MSP3400C_DEM,
0x30/*MODUS*/,
modus))
return -1;
if (msp3400c_write(client,
I2C_MSP3400C_DEM,
0x20/*stanard*/,
std))
return -1;
/* write the dfps that may have an influence on
standard/audio autodetection right now */
msp34xxg_set_source(client, msp->source);
if (msp3400c_write(client, I2C_MSP3400C_DFP,
0x0e, /* AM/FM Prescale */
0x3000 /* default: [15:8] 75khz deviation */))
return -1;
if (msp3400c_write(client, I2C_MSP3400C_DFP,
0x10, /* NICAM Prescale */
0x5a00 /* default: 9db gain (as recommended) */))
return -1;
if (msp3400c_write(client,
I2C_MSP3400C_DEM,
0x20, /* STANDARD SELECT */
standard /* default: 0x01 for automatic standard select*/))
return -1;
return 0;
}
static int msp34xxg_thread(void *data)
{
struct i2c_client *client = data;
struct msp3400c *msp = i2c_get_clientdata(client);
int val, std, i;
printk("msp34xxg: daemon started\n");
msp->source = 1; /* default */
for (;;) {
d2printk(KERN_DEBUG "msp34xxg: thread: sleep\n");
msp34xx_sleep(msp,-1);
d2printk(KERN_DEBUG "msp34xxg: thread: wakeup\n");
restart:
dprintk("msp34xxg: thread: restart scan\n");
msp->restart = 0;
if (kthread_should_stop())
break;
/* setup the chip*/
msp34xxg_init(client);
std = standard;
if (std != 0x01)
goto unmute;
/* watch autodetect */
dprintk("msp34xxg: triggered autodetect, waiting for result\n");
for (i = 0; i < 10; i++) {
if (msp34xx_sleep(msp,100))
goto restart;
/* check results */
val = msp3400c_read(client, I2C_MSP3400C_DEM, 0x7e);
if (val < 0x07ff) {
std = val;
break;
}
dprintk("msp34xxg: detection still in progress\n");
}
if (0x01 == std) {
dprintk("msp34xxg: detection still in progress after 10 tries. giving up.\n");
continue;
}
unmute:
dprintk("msp34xxg: current mode: %s (0x%04x)\n",
msp34xx_standard_mode_name(std), std);
/* unmute: dispatch sound to scart output, set scart volume */
dprintk("msp34xxg: unmute\n");
msp3400c_setbass(client, msp->bass);
msp3400c_settreble(client, msp->treble);
msp3400c_setvolume(client, msp->muted, msp->volume, msp->balance);
/* restore ACB */
if (msp3400c_write(client,
I2C_MSP3400C_DFP,
0x13, /* ACB */
msp->acb))
return -1;
}
dprintk(KERN_DEBUG "msp34xxg: thread: exit\n");
return 0;
}
/* set the same 'source' for the loudspeaker, scart and quasi-peak detector
* the value for source is the same as bit 15:8 of DFP registers 0x08,
* 0x0a and 0x0c: 0=mono, 1=stereo or A|B, 2=SCART, 3=stereo or A, 4=stereo or B
*
* this function replaces msp3400c_setstereo
*/
static void msp34xxg_set_source(struct i2c_client *client, int source)
{
struct msp3400c *msp = i2c_get_clientdata(client);
/* fix matrix mode to stereo and let the msp choose what
* to output according to 'source', as recommended
* for MONO (source==0) downmixing set bit[7:0] to 0x30
*/
int value = (source&0x07)<<8|(source==0 ? 0x30:0x20);
dprintk("msp34xxg: set source to %d (0x%x)\n", source, value);
msp3400c_write(client,
I2C_MSP3400C_DFP,
0x08, /* Loudspeaker Output */
value);
msp3400c_write(client,
I2C_MSP3400C_DFP,
0x0a, /* SCART1 DA Output */
value);
msp3400c_write(client,
I2C_MSP3400C_DFP,
0x0c, /* Quasi-peak detector */
value);
/*
* set identification threshold. Personally, I
* I set it to a higher value that the default
* of 0x190 to ignore noisy stereo signals.
* this needs tuning. (recommended range 0x00a0-0x03c0)
* 0x7f0 = forced mono mode
*/
msp3400c_write(client,
I2C_MSP3400C_DEM,
0x22, /* a2 threshold for stereo/bilingual */
stereo_threshold);
msp->source=source;
}
static void msp34xxg_detect_stereo(struct i2c_client *client)
{
struct msp3400c *msp = i2c_get_clientdata(client);
int status = msp3400c_read(client,
I2C_MSP3400C_DEM,
0x0200 /* STATUS */);
int is_bilingual = status&0x100;
int is_stereo = status&0x40;
msp->rxsubchans = 0;
if (is_stereo)
msp->rxsubchans |= V4L2_TUNER_SUB_STEREO;
else
msp->rxsubchans |= V4L2_TUNER_SUB_MONO;
if (is_bilingual) {
msp->rxsubchans |= V4L2_TUNER_SUB_LANG1|V4L2_TUNER_SUB_LANG2;
/* I'm supposed to check whether it's SAP or not
* and set only LANG2/SAP in this case. Yet, the MSP
* does a lot of work to hide this and handle everything
* the same way. I don't want to work around it so unless
* this is a problem, I'll handle SAP just like lang1/lang2.
*/
}
dprintk("msp34xxg: status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
status, is_stereo, is_bilingual, msp->rxsubchans);
}
static void msp34xxg_set_audmode(struct i2c_client *client, int audmode)
{
struct msp3400c *msp = i2c_get_clientdata(client);
int source;
switch (audmode) {
case V4L2_TUNER_MODE_MONO:
source=0; /* mono only */
break;
case V4L2_TUNER_MODE_STEREO:
source=1; /* stereo or A|B, see comment in msp34xxg_get_v4l2_stereo() */
/* problem: that could also mean 2 (scart input) */
break;
case V4L2_TUNER_MODE_LANG1:
source=3; /* stereo or A */
break;
case V4L2_TUNER_MODE_LANG2:
source=4; /* stereo or B */
break;
default:
audmode = 0;
source = 1;
break;
}
msp->audmode = audmode;
msp34xxg_set_source(client, source);
}
/* ----------------------------------------------------------------------- */
static int msp_attach(struct i2c_adapter *adap, int addr, int kind);
static int msp_detach(struct i2c_client *client);
static int msp_probe(struct i2c_adapter *adap);
static int msp_command(struct i2c_client *client, unsigned int cmd, void *arg);
static int msp_suspend(struct device * dev, u32 state, u32 level);
static int msp_resume(struct device * dev, u32 level);
static void msp_wake_thread(struct i2c_client *client);
static struct i2c_driver driver = {
.owner = THIS_MODULE,
.name = "i2c msp3400 driver",
.id = I2C_DRIVERID_MSP3400,
.flags = I2C_DF_NOTIFY,
.attach_adapter = msp_probe,
.detach_client = msp_detach,
.command = msp_command,
.driver = {
.suspend = msp_suspend,
.resume = msp_resume,
},
};
static struct i2c_client client_template =
{
I2C_DEVNAME("(unset)"),
.flags = I2C_CLIENT_ALLOW_USE,
.driver = &driver,
};
static int msp_attach(struct i2c_adapter *adap, int addr, int kind)
{
struct msp3400c *msp;
struct i2c_client *c;
int (*thread_func)(void *data) = NULL;
client_template.adapter = adap;
client_template.addr = addr;
if (-1 == msp3400c_reset(&client_template)) {
dprintk("msp3400: no chip found\n");
return -1;
}
if (NULL == (c = kmalloc(sizeof(struct i2c_client),GFP_KERNEL)))
return -ENOMEM;
memcpy(c,&client_template,sizeof(struct i2c_client));
if (NULL == (msp = kmalloc(sizeof(struct msp3400c),GFP_KERNEL))) {
kfree(c);
return -ENOMEM;
}
memset(msp,0,sizeof(struct msp3400c));
msp->volume = 58880; /* 0db gain */
msp->balance = 32768;
msp->bass = 32768;
msp->treble = 32768;
msp->input = -1;
msp->muted = 1;
i2c_set_clientdata(c, msp);
init_waitqueue_head(&msp->wq);
if (-1 == msp3400c_reset(c)) {
kfree(msp);
kfree(c);
dprintk("msp3400: no chip found\n");
return -1;
}
msp->rev1 = msp3400c_read(c, I2C_MSP3400C_DFP, 0x1e);
if (-1 != msp->rev1)
msp->rev2 = msp3400c_read(c, I2C_MSP3400C_DFP, 0x1f);
if ((-1 == msp->rev1) || (0 == msp->rev1 && 0 == msp->rev2)) {
kfree(msp);
kfree(c);
printk("msp3400: error while reading chip version\n");
return -1;
}
#if 0
/* this will turn on a 1kHz beep - might be useful for debugging... */
msp3400c_write(c,I2C_MSP3400C_DFP, 0x0014, 0x1040);
#endif
msp3400c_setvolume(c, msp->muted, msp->volume, msp->balance);
snprintf(c->name, sizeof(c->name), "MSP34%02d%c-%c%d",
(msp->rev2>>8)&0xff, (msp->rev1&0xff)+'@',
((msp->rev1>>8)&0xff)+'@', msp->rev2&0x1f);
msp->opmode = opmode;
if (OPMODE_AUTO == msp->opmode) {
if (HAVE_SIMPLER(msp))
msp->opmode = OPMODE_SIMPLER;
else if (HAVE_SIMPLE(msp))
msp->opmode = OPMODE_SIMPLE;
else
msp->opmode = OPMODE_MANUAL;
}
/* hello world :-) */
printk(KERN_INFO "msp34xx: init: chip=%s",i2c_clientname(c));
if (HAVE_NICAM(msp))
printk(" +nicam");
if (HAVE_SIMPLE(msp))
printk(" +simple");
if (HAVE_SIMPLER(msp))
printk(" +simpler");
if (HAVE_RADIO(msp))
printk(" +radio");
/* version-specific initialization */
switch (msp->opmode) {
case OPMODE_MANUAL:
printk(" mode=manual");
thread_func = msp3400c_thread;
break;
case OPMODE_SIMPLE:
printk(" mode=simple");
thread_func = msp3410d_thread;
break;
case OPMODE_SIMPLER:
printk(" mode=simpler");
thread_func = msp34xxg_thread;
break;
}
printk("\n");
/* startup control thread if needed */
if (thread_func) {
msp->kthread = kthread_run(thread_func, c, "msp34xx");
if (NULL == msp->kthread)
printk(KERN_WARNING "msp34xx: kernel_thread() failed\n");
msp_wake_thread(c);
}
/* done */
i2c_attach_client(c);
return 0;
}
static int msp_detach(struct i2c_client *client)
{
struct msp3400c *msp = i2c_get_clientdata(client);
/* shutdown control thread */
if (msp->kthread >= 0) {
msp->restart = 1;
kthread_stop(msp->kthread);
}
msp3400c_reset(client);
i2c_detach_client(client);
kfree(msp);
kfree(client);
return 0;
}
static int msp_probe(struct i2c_adapter *adap)
{
if (adap->class & I2C_CLASS_TV_ANALOG)
return i2c_probe(adap, &addr_data, msp_attach);
return 0;
}
static void msp_wake_thread(struct i2c_client *client)
{
struct msp3400c *msp = i2c_get_clientdata(client);
if (NULL == msp->kthread)
return;
msp3400c_setvolume(client,msp->muted,0,0);
msp->watch_stereo = 0;
msp->restart = 1;
wake_up_interruptible(&msp->wq);
}
/* ----------------------------------------------------------------------- */
static int mode_v4l2_to_v4l1(int rxsubchans)
{
int mode = 0;
if (rxsubchans & V4L2_TUNER_SUB_STEREO)
mode |= VIDEO_SOUND_STEREO;
if (rxsubchans & V4L2_TUNER_SUB_LANG2)
mode |= VIDEO_SOUND_LANG2;
if (rxsubchans & V4L2_TUNER_SUB_LANG1)
mode |= VIDEO_SOUND_LANG1;
if (0 == mode)
mode |= VIDEO_SOUND_MONO;
return mode;
}
static int mode_v4l1_to_v4l2(int mode)
{
if (mode & VIDEO_SOUND_STEREO)
return V4L2_TUNER_MODE_STEREO;
if (mode & VIDEO_SOUND_LANG2)
return V4L2_TUNER_MODE_LANG2;
if (mode & VIDEO_SOUND_LANG1)
return V4L2_TUNER_MODE_LANG1;
return V4L2_TUNER_MODE_MONO;
}
static void msp_any_detect_stereo(struct i2c_client *client)
{
struct msp3400c *msp = i2c_get_clientdata(client);
switch (msp->opmode) {
case OPMODE_MANUAL:
case OPMODE_SIMPLE:
autodetect_stereo(client);
break;
case OPMODE_SIMPLER:
msp34xxg_detect_stereo(client);
break;
}
}
static void msp_any_set_audmode(struct i2c_client *client, int audmode)
{
struct msp3400c *msp = i2c_get_clientdata(client);
switch (msp->opmode) {
case OPMODE_MANUAL:
case OPMODE_SIMPLE:
msp->watch_stereo = 0;
msp3400c_set_audmode(client, audmode);
break;
case OPMODE_SIMPLER:
msp34xxg_set_audmode(client, audmode);
break;
}
}
static int msp_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
struct msp3400c *msp = i2c_get_clientdata(client);
__u16 *sarg = arg;
int scart = 0;
switch (cmd) {
case AUDC_SET_INPUT:
dprintk(KERN_DEBUG "msp34xx: AUDC_SET_INPUT(%d)\n",*sarg);
if (*sarg == msp->input)
break;
msp->input = *sarg;
switch (*sarg) {
case AUDIO_RADIO:
/* Hauppauge uses IN2 for the radio */
msp->mode = MSP_MODE_FM_RADIO;
scart = SCART_IN2;
break;
case AUDIO_EXTERN_1:
/* IN1 is often used for external input ... */
msp->mode = MSP_MODE_EXTERN;
scart = SCART_IN1;
break;
case AUDIO_EXTERN_2:
/* ... sometimes it is IN2 through ;) */
msp->mode = MSP_MODE_EXTERN;
scart = SCART_IN2;
break;
case AUDIO_TUNER:
msp->mode = -1;
break;
default:
if (*sarg & AUDIO_MUTE)
msp3400c_set_scart(client,SCART_MUTE,0);
break;
}
if (scart) {
msp->rxsubchans = V4L2_TUNER_SUB_STEREO;
msp->audmode = V4L2_TUNER_MODE_STEREO;
msp3400c_set_scart(client,scart,0);
msp3400c_write(client,I2C_MSP3400C_DFP,0x000d,0x1900);
if (msp->opmode != OPMODE_SIMPLER)
msp3400c_set_audmode(client, msp->audmode);
}
msp_wake_thread(client);
break;
case AUDC_SET_RADIO:
dprintk(KERN_DEBUG "msp34xx: AUDC_SET_RADIO\n");
msp->norm = VIDEO_MODE_RADIO;
dprintk(KERN_DEBUG "msp34xx: switching to radio mode\n");
msp->watch_stereo = 0;
switch (msp->opmode) {
case OPMODE_MANUAL:
/* set msp3400 to FM radio mode */
msp3400c_setmode(client,MSP_MODE_FM_RADIO);
msp3400c_setcarrier(client, MSP_CARRIER(10.7),
MSP_CARRIER(10.7));
msp3400c_setvolume(client, msp->muted,
msp->volume, msp->balance);
break;
case OPMODE_SIMPLE:
case OPMODE_SIMPLER:
/* the thread will do for us */
msp_wake_thread(client);
break;
}
break;
/* --- v4l ioctls --- */
/* take care: bttv does userspace copying, we'll get a
kernel pointer here... */
case VIDIOCGAUDIO:
{
struct video_audio *va = arg;
dprintk(KERN_DEBUG "msp34xx: VIDIOCGAUDIO\n");
va->flags |= VIDEO_AUDIO_VOLUME |
VIDEO_AUDIO_BASS |
VIDEO_AUDIO_TREBLE |
VIDEO_AUDIO_MUTABLE;
if (msp->muted)
va->flags |= VIDEO_AUDIO_MUTE;
va->volume = msp->volume;
va->balance = (va->volume) ? msp->balance : 32768;
va->bass = msp->bass;
va->treble = msp->treble;
msp_any_detect_stereo(client);
va->mode = mode_v4l2_to_v4l1(msp->rxsubchans);
break;
}
case VIDIOCSAUDIO:
{
struct video_audio *va = arg;
dprintk(KERN_DEBUG "msp34xx: VIDIOCSAUDIO\n");
msp->muted = (va->flags & VIDEO_AUDIO_MUTE);
msp->volume = va->volume;
msp->balance = va->balance;
msp->bass = va->bass;
msp->treble = va->treble;
msp3400c_setvolume(client, msp->muted,
msp->volume, msp->balance);
msp3400c_setbass(client,msp->bass);
msp3400c_settreble(client,msp->treble);
if (va->mode != 0 && msp->norm != VIDEO_MODE_RADIO)
msp_any_set_audmode(client,mode_v4l1_to_v4l2(va->mode));
break;
}
case VIDIOCSCHAN:
{
struct video_channel *vc = arg;
dprintk(KERN_DEBUG "msp34xx: VIDIOCSCHAN (norm=%d)\n",vc->norm);
msp->norm = vc->norm;
msp_wake_thread(client);
break;
}
case VIDIOCSFREQ:
case VIDIOC_S_FREQUENCY:
{
/* new channel -- kick audio carrier scan */
dprintk(KERN_DEBUG "msp34xx: VIDIOCSFREQ\n");
msp_wake_thread(client);
break;
}
/* --- v4l2 ioctls --- */
case VIDIOC_G_TUNER:
{
struct v4l2_tuner *vt = arg;
msp_any_detect_stereo(client);
vt->audmode = msp->audmode;
vt->rxsubchans = msp->rxsubchans;
vt->capability = V4L2_TUNER_CAP_STEREO |
V4L2_TUNER_CAP_LANG1|
V4L2_TUNER_CAP_LANG2;
break;
}
case VIDIOC_S_TUNER:
{
struct v4l2_tuner *vt=(struct v4l2_tuner *)arg;
/* only set audmode */
if (vt->audmode != -1 && vt->audmode != 0)
msp_any_set_audmode(client, vt->audmode);
break;
}
/* msp34xx specific */
case MSP_SET_MATRIX:
{
struct msp_matrix *mspm = arg;
dprintk(KERN_DEBUG "msp34xx: MSP_SET_MATRIX\n");
msp3400c_set_scart(client, mspm->input, mspm->output);
break;
}
default:
/* nothing */
break;
}
return 0;
}
static int msp_suspend(struct device * dev, u32 state, u32 level)
{
struct i2c_client *c = container_of(dev, struct i2c_client, dev);
dprintk("msp34xx: suspend\n");
msp3400c_reset(c);
return 0;
}
static int msp_resume(struct device * dev, u32 level)
{
struct i2c_client *c = container_of(dev, struct i2c_client, dev);
dprintk("msp34xx: resume\n");
msp_wake_thread(c);
return 0;
}
/* ----------------------------------------------------------------------- */
static int __init msp3400_init_module(void)
{
return i2c_add_driver(&driver);
}
static void __exit msp3400_cleanup_module(void)
{
i2c_del_driver(&driver);
}
module_init(msp3400_init_module);
module_exit(msp3400_cleanup_module);
/*
* Overrides for Emacs so that we follow Linus's tabbing style.
* ---------------------------------------------------------------------------
* Local variables:
* c-basic-offset: 8
* End:
*/
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