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kernel_samsung_sm7125/drivers/media/video/msp3400.c

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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/init.h>
#include <linux/smp_lock.h>
#include <linux/kthread.h>
#include <linux/suspend.h>
#include <asm/semaphore.h>
#include <asm/pgtable.h>
#include <linux/videodev.h>
#include <media/audiochip.h>
#include <media/v4l2-common.h>
#include "msp3400.h"
/* ---------------------------------------------------------------------- */
MODULE_DESCRIPTION("device driver for msp34xx TV sound processor");
MODULE_AUTHOR("Gerd Knorr");
MODULE_LICENSE("GPL");
#define OPMODE_AUTO -1
#define OPMODE_MANUAL 0
#define OPMODE_AUTODETECT 1 /* use autodetect (>= msp3410 only) */
#define OPMODE_AUTOSELECT 2 /* use autodetect & autoselect (>= msp34xxG) */
/* module 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 */
/* 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(opmode, "Forces a MSP3400 opmode. 0=Manual, 1=Autodetect, 2=Autodetect and autoselect");
MODULE_PARM_DESC(once, "No continuous stereo monitoring");
MODULE_PARM_DESC(debug, "Enable debug messages");
MODULE_PARM_DESC(stereo_threshold, "Sets signal threshold to activate stereo");
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_PARM_DESC(dolby, "Activates Dolby processsing");
/* ---------------------------------------------------------------------- */
#define msp3400_err(fmt, arg...) do { \
printk(KERN_ERR "%s %d-%04x: " fmt, client->driver->driver.name, \
i2c_adapter_id(client->adapter), client->addr , ## arg); } while (0)
#define msp3400_warn(fmt, arg...) do { \
printk(KERN_WARNING "%s %d-%04x: " fmt, client->driver->driver.name, \
i2c_adapter_id(client->adapter), client->addr , ## arg); } while (0)
#define msp3400_info(fmt, arg...) do { \
printk(KERN_INFO "%s %d-%04x: " fmt, client->driver->driver.name, \
i2c_adapter_id(client->adapter), client->addr , ## arg); } while (0)
/* level 1 debug. */
#define msp_dbg1(fmt, arg...) \
do { \
if (debug) \
printk(KERN_INFO "%s debug %d-%04x: " fmt, \
client->driver->driver.name, \
i2c_adapter_id(client->adapter), client->addr , ## arg); \
} while (0)
/* level 2 debug. */
#define msp_dbg2(fmt, arg...) \
do { \
if (debug >= 2) \
printk(KERN_INFO "%s debug %d-%04x: " fmt, \
client->driver->driver.name, \
i2c_adapter_id(client->adapter), client->addr , ## arg); \
} while (0)
/* level 3 debug. Use with care. */
#define msp_dbg3(fmt, arg...) \
do { \
if (debug >= 16) \
printk(KERN_INFO "%s debug %d-%04x: " fmt, \
client->driver->driver.name, \
i2c_adapter_id(client->adapter), client->addr , ## arg); \
} while (0)
/* control subaddress */
#define I2C_MSP_CONTROL 0x00
/* demodulator unit subaddress */
#define I2C_MSP_DEM 0x10
/* DSP unit subaddress */
#define I2C_MSP_DSP 0x12
/* Addresses to scan */
static unsigned short normal_i2c[] = { 0x80 >> 1, 0x88 >> 1, I2C_CLIENT_END };
>>>>>>> remote
I2C_CLIENT_INSMOD;
#define DFP_COUNT 0x41
static const int bl_dfp[] = {
0x00, 0x01, 0x02, 0x03, 0x06, 0x08, 0x09, 0x0a,
0x0b, 0x0d, 0x0e, 0x10
};
#define HAVE_NICAM(state) (((state->rev2 >> 8) & 0xff) != 0)
#define HAVE_RADIO(state) ((state->rev1 & 0x0f) >= 'G'-'@')
struct msp_state {
int rev1, rev2;
int opmode;
int mode;
int norm;
int stereo;
int nicam_on;
int acb;
int in_scart;
int i2s_mode;
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;
/* shadow register set */
int dfp_regs[DFP_COUNT];
/* thread */
struct task_struct *kthread;
wait_queue_head_t wq;
int restart:1;
int watch_stereo:1;
};
#define VIDEO_MODE_RADIO 16 /* norm magic for radio mode */
/* ----------------------------------------------------------------------- */
/* functions for talking to the MSP3400C Sound processor */
static int msp_reset(struct i2c_client *client)
{
/* reset and read revision code */
static u8 reset_off[3] = { I2C_MSP_CONTROL, 0x80, 0x00 };
static u8 reset_on[3] = { I2C_MSP_CONTROL, 0x00, 0x00 };
static u8 write[3] = { I2C_MSP_DSP + 1, 0x00, 0x1e };
u8 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 },
};
msp_dbg3("msp_reset\n");
if (i2c_transfer(client->adapter, &reset[0], 1) != 1 ||
i2c_transfer(client->adapter, &reset[1], 1) != 1 ||
i2c_transfer(client->adapter, test, 2) != 2) {
msp_err("chip reset failed\n");
return -1;
}
return 0;
}
static int msp_read(struct i2c_client *client, int dev, int addr)
{
int err, retval;
u8 write[3];
u8 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; err++) {
if (i2c_transfer(client->adapter, msgs, 2) == 2)
break;
msp_warn("I/O error #%d (read 0x%02x/0x%02x)\n", err,
dev, addr);
current->state = TASK_INTERRUPTIBLE;
schedule_timeout(msecs_to_jiffies(10));
}
if (err == 3) {
msp_warn("giving up, resetting chip. Sound will go off, sorry folks :-|\n");
msp_reset(client);
return -1;
}
retval = read[0] << 8 | read[1];
msp_dbg3("msp_read(0x%x, 0x%x): 0x%x\n", dev, addr, retval);
return retval;
}
static inline int msp_read_dem(struct i2c_client *client, int addr)
{
return msp_read(client, I2C_MSP_DEM, addr);
}
static inline int msp_read_dsp(struct i2c_client *client, int addr)
{
return msp_read(client, I2C_MSP_DSP, addr);
}
static int msp_write(struct i2c_client *client, int dev, int addr, int val)
{
int err;
u8 buffer[5];
buffer[0] = dev;
buffer[1] = addr >> 8;
buffer[2] = addr & 0xff;
buffer[3] = val >> 8;
buffer[4] = val & 0xff;
msp_dbg3("msp_write(0x%x, 0x%x, 0x%x)\n", dev, addr, val);
for (err = 0; err < 3; err++) {
if (i2c_master_send(client, buffer, 5) == 5)
break;
msp_warn("I/O error #%d (write 0x%02x/0x%02x)\n", err,
dev, addr);
current->state = TASK_INTERRUPTIBLE;
schedule_timeout(msecs_to_jiffies(10));
}
if (err == 3) {
msp_warn("giving up, resetting chip. Sound will go off, sorry folks :-|\n");
msp_reset(client);
return -1;
}
return 0;
}
static inline int msp_write_dem(struct i2c_client *client, int addr, int val)
{
return msp_write(client, I2C_MSP_DEM, addr, val);
}
static inline int msp_write_dsp(struct i2c_client *client, int addr, int val)
{
return msp_write(client, I2C_MSP_DSP, addr, val);
}
/* ----------------------------------------------------------------------- *
* bits 9 8 5 - SCART DSP input Select:
* 0 0 0 - SCART 1 to DSP input (reset position)
* 0 1 0 - MONO to DSP input
* 1 0 0 - SCART 2 to DSP input
* 1 1 1 - Mute DSP input
*
* bits 11 10 6 - SCART 1 Output Select:
* 0 0 0 - undefined (reset position)
* 0 1 0 - SCART 2 Input to SCART 1 Output (for devices with 2 SCARTS)
* 1 0 0 - MONO input to SCART 1 Output
* 1 1 0 - SCART 1 DA to SCART 1 Output
* 0 0 1 - SCART 2 DA to SCART 1 Output
* 0 1 1 - SCART 1 Input to SCART 1 Output
* 1 1 1 - Mute SCART 1 Output
*
* bits 13 12 7 - SCART 2 Output Select (for devices with 2 Output SCART):
* 0 0 0 - SCART 1 DA to SCART 2 Output (reset position)
* 0 1 0 - SCART 1 Input to SCART 2 Output
* 1 0 0 - MONO input to SCART 2 Output
* 0 0 1 - SCART 2 DA to SCART 2 Output
* 0 1 1 - SCART 2 Input to SCART 2 Output
* 1 1 0 - Mute SCART 2 Output
*
* Bits 4 to 0 should be zero.
* ----------------------------------------------------------------------- */
static int scarts[3][9] = {
/* MASK IN1 IN2 IN1_DA IN2_DA IN3 IN4 MONO MUTE */
/* SCART DSP Input select */
{ 0x0320, 0x0000, 0x0200, -1, -1, 0x0300, 0x0020, 0x0100, 0x0320 },
/* SCART1 Output select */
{ 0x0c40, 0x0440, 0x0400, 0x0c00, 0x0040, 0x0000, 0x0840, 0x0800, 0x0c40 },
/* SCART2 Output select */
{ 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 msp_set_scart(struct i2c_client *client, int in, int out)
{
struct msp_state *state = i2c_get_clientdata(client);
state->in_scart=in;
if (in >= 1 && in <= 8 && out >= 0 && out <= 2) {
if (-1 == scarts[out][in])
return;
state->acb &= ~scarts[out][SCART_MASK];
state->acb |= scarts[out][in];
} else
state->acb = 0xf60; /* Mute Input and SCART 1 Output */
msp_dbg1("scart switch: %s => %d (ACB=0x%04x)\n",
scart_names[in], out, state->acb);
msp_write_dsp(client, 0x13, state->acb);
/* Sets I2S speed 0 = 1.024 Mbps, 1 = 2.048 Mbps */
msp_write_dem(client, 0x40, state->i2s_mode);
}
/* ------------------------------------------------------------------------ */
/* 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 msp3400c_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;
} msp3400c_init_data[] = {
{ /* AM (for carrier detect / msp3400) */
{75, 19, 36, 35, 39, 40},
{75, 19, 36, 35, 39, 40},
MSP_CARRIER(5.5), MSP_CARRIER(5.5),
0x00d0, 0x0500, 0x0020, 0x3000
},{ /* AM (for carrier detect / msp3410) */
{-1, -1, -8, 2, 59, 126},
{-1, -1, -8, 2, 59, 126},
MSP_CARRIER(5.5), MSP_CARRIER(5.5),
0x00d0, 0x0100, 0x0020, 0x3000
},{ /* FM Radio */
{-8, -8, 4, 6, 78, 107},
{-8, -8, 4, 6, 78, 107},
MSP_CARRIER(10.7), MSP_CARRIER(10.7),
0x00d0, 0x0480, 0x0020, 0x3000
},{ /* 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 msp3400c_carrier_detect {
int cdo;
char *name;
};
static struct msp3400c_carrier_detect msp3400c_carrier_detect_main[] = {
/* main carrier */
{ MSP_CARRIER(4.5), "4.5 NTSC" },
{ MSP_CARRIER(5.5), "5.5 PAL B/G" },
{ MSP_CARRIER(6.0), "6.0 PAL I" },
{ MSP_CARRIER(6.5), "6.5 PAL D/K + SAT + SECAM" }
};
static struct msp3400c_carrier_detect msp3400c_carrier_detect_55[] = {
/* PAL B/G */
{ MSP_CARRIER(5.7421875), "5.742 PAL B/G FM-stereo" },
{ MSP_CARRIER(5.85), "5.85 PAL B/G NICAM" }
};
static struct msp3400c_carrier_detect msp3400c_carrier_detect_65[] = {
/* PAL SAT / SECAM */
{ MSP_CARRIER(5.85), "5.85 PAL D/K + SECAM NICAM" },
{ MSP_CARRIER(6.2578125), "6.25 PAL D/K1 FM-stereo" },
{ MSP_CARRIER(6.7421875), "6.74 PAL D/K2 FM-stereo" },
{ MSP_CARRIER(7.02), "7.02 PAL SAT FM-stereo s/b" },
{ MSP_CARRIER(7.20), "7.20 PAL SAT FM-stereo s" },
{ MSP_CARRIER(7.38), "7.38 PAL SAT FM-stereo b" },
};
/* ------------------------------------------------------------------------ */
static void msp3400c_setcarrier(struct i2c_client *client, int cdo1, int cdo2)
{
msp_write_dem(client, 0x0093, cdo1 & 0xfff);
msp_write_dem(client, 0x009b, cdo1 >> 12);
msp_write_dem(client, 0x00a3, cdo2 & 0xfff);
msp_write_dem(client, 0x00ab, cdo2 >> 12);
msp_write_dem(client, 0x0056, 0); /*LOAD_REG_1/2*/
}
static void msp_set_mute(struct i2c_client *client)
{
msp_dbg1("mute audio\n");
msp_write_dsp(client, 0x0000, 0); /* loudspeaker */
msp_write_dsp(client, 0x0006, 0); /* headphones */
}
static void msp_set_audio(struct i2c_client *client)
{
struct msp_state *state = i2c_get_clientdata(client);
int val = 0, bal = 0, bass, treble;
if (!state->muted)
val = (state->volume * 0x7f / 65535) << 8;
if (val)
bal = (state->balance / 256) - 128;
bass = ((state->bass - 32768) * 0x60 / 65535) << 8;
treble = ((state->treble - 32768) * 0x60 / 65535) << 8;
msp_dbg1("mute=%s volume=%d balance=%d bass=%d treble=%d\n",
state->muted ? "on" : "off", state->volume, state->balance,
state->bass, state->treble);
msp_write_dsp(client, 0x0000, val); /* loudspeaker */
msp_write_dsp(client, 0x0006, val); /* headphones */
msp_write_dsp(client, 0x0007, state->muted ? 0x1 : (val | 0x1));
msp_write_dsp(client, 0x0001, bal << 8);
msp_write_dsp(client, 0x0002, bass); /* loudspeaker */
msp_write_dsp(client, 0x0003, treble); /* loudspeaker */
}
static void msp3400c_setmode(struct i2c_client *client, int type)
{
struct msp_state *state = i2c_get_clientdata(client);
int i;
msp_dbg1("setmode: %d\n",type);
state->mode = type;
state->audmode = V4L2_TUNER_MODE_MONO;
state->rxsubchans = V4L2_TUNER_SUB_MONO;
msp_write_dem(client, 0x00bb, /* ad_cv */
msp3400c_init_data[type].ad_cv);
for (i = 5; i >= 0; i--) /* fir 1 */
msp_write_dem(client, 0x0001,
msp3400c_init_data[type].fir1[i]);
msp_write_dem(client, 0x0005, 0x0004); /* fir 2 */
msp_write_dem(client, 0x0005, 0x0040);
msp_write_dem(client, 0x0005, 0x0000);
for (i = 5; i >= 0; i--)
msp_write_dem(client, 0x0005,
msp3400c_init_data[type].fir2[i]);
msp_write_dem(client, 0x0083, /* MODE_REG */
msp3400c_init_data[type].mode_reg);
msp3400c_setcarrier(client, msp3400c_init_data[type].cdo1,
msp3400c_init_data[type].cdo2);
msp_write_dem(client, 0x0056, 0); /*LOAD_REG_1/2*/
if (dolby) {
msp_write_dsp(client, 0x0008,
0x0520); /* I2S1 */
msp_write_dsp(client, 0x0009,
0x0620); /* I2S2 */
msp_write_dsp(client, 0x000b,
msp3400c_init_data[type].dfp_src);
} else {
msp_write_dsp(client, 0x0008,
msp3400c_init_data[type].dfp_src);
msp_write_dsp(client, 0x0009,
msp3400c_init_data[type].dfp_src);
msp_write_dsp(client, 0x000b,
msp3400c_init_data[type].dfp_src);
}
msp_write_dsp(client, 0x000a,
msp3400c_init_data[type].dfp_src);
msp_write_dsp(client, 0x000e,
msp3400c_init_data[type].dfp_matrix);
if (HAVE_NICAM(state)) {
/* nicam prescale */
msp_write_dsp(client, 0x0010, 0x5a00); /* was: 0x3000 */
}
}
/* given a bitmask of VIDEO_SOUND_XXX returns the "best" in the bitmask */
static int msp3400c_best_video_sound(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_setstereo(struct i2c_client *client, int mode)
{
static char *strmode[] = { "0", "mono", "stereo", "3",
"lang1", "5", "6", "7", "lang2"
};
struct msp_state *state = i2c_get_clientdata(client);
int nicam = 0; /* channel source: FM/AM or nicam */
int src = 0;
if (state->opmode == OPMODE_AUTOSELECT) {
/* this method would break everything, let's make sure
* it's never called
*/
msp_dbg1("setstereo called with mode=%d instead of set_source (ignored)\n",
mode);
return;
}
/* switch demodulator */
switch (state->mode) {
case MSP_MODE_FM_TERRA:
msp_dbg1("FM setstereo: %s\n", strmode[mode]);
msp3400c_setcarrier(client,state->second,state->main);
switch (mode) {
case V4L2_TUNER_MODE_STEREO:
msp_write_dsp(client, 0x000e, 0x3001);
break;
case V4L2_TUNER_MODE_MONO:
case V4L2_TUNER_MODE_LANG1:
case V4L2_TUNER_MODE_LANG2:
msp_write_dsp(client, 0x000e, 0x3000);
break;
}
break;
case MSP_MODE_FM_SAT:
msp_dbg1("SAT setstereo: %s\n", strmode[mode]);
switch (mode) {
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:
msp_dbg1("NICAM setstereo: %s\n",strmode[mode]);
msp3400c_setcarrier(client,state->second,state->main);
if (state->nicam_on)
nicam=0x0100;
break;
case MSP_MODE_BTSC:
msp_dbg1("BTSC setstereo: %s\n",strmode[mode]);
nicam=0x0300;
break;
case MSP_MODE_EXTERN:
msp_dbg1("extern setstereo: %s\n",strmode[mode]);
nicam = 0x0200;
break;
case MSP_MODE_FM_RADIO:
msp_dbg1("FM-Radio setstereo: %s\n",strmode[mode]);
break;
default:
msp_dbg1("mono setstereo\n");
return;
}
/* switch audio */
switch (msp3400c_best_video_sound(mode)) {
case V4L2_TUNER_MODE_STEREO:
src = 0x0020 | nicam;
break;
case V4L2_TUNER_MODE_MONO:
if (state->mode == MSP_MODE_AM_NICAM) {
msp_dbg1("switching to AM mono\n");
/* AM mono decoding is handled by tuner, not MSP chip */
/* SCART switching control register */
msp_set_scart(client,SCART_MONO,0);
src = 0x0200;
break;
}
case V4L2_TUNER_MODE_LANG1:
src = 0x0000 | nicam;
break;
case V4L2_TUNER_MODE_LANG2:
src = 0x0010 | nicam;
break;
}
msp_dbg1("setstereo final source/matrix = 0x%x\n", src);
if (dolby) {
msp_write_dsp(client, 0x0008,0x0520);
msp_write_dsp(client, 0x0009,0x0620);
msp_write_dsp(client, 0x000a,src);
msp_write_dsp(client, 0x000b,src);
} else {
msp_write_dsp(client, 0x0008,src);
msp_write_dsp(client, 0x0009,src);
msp_write_dsp(client, 0x000a,src);
msp_write_dsp(client, 0x000b,src);
}
}
static void msp3400c_print_mode(struct i2c_client *client)
{
struct msp_state *state = i2c_get_clientdata(client);
if (state->main == state->second) {
msp_dbg1("mono sound carrier: %d.%03d MHz\n",
state->main/910000,(state->main/910)%1000);
} else {
msp_dbg1("main sound carrier: %d.%03d MHz\n",
state->main/910000,(state->main/910)%1000);
}
if (state->mode == MSP_MODE_FM_NICAM1 || state->mode == MSP_MODE_FM_NICAM2)
msp_dbg1("NICAM/FM carrier : %d.%03d MHz\n",
state->second/910000,(state->second/910)%1000);
if (state->mode == MSP_MODE_AM_NICAM)
msp_dbg1("NICAM/AM carrier : %d.%03d MHz\n",
state->second/910000,(state->second/910)%1000);
if (state->mode == MSP_MODE_FM_TERRA &&
state->main != state->second) {
msp_dbg1("FM-stereo carrier : %d.%03d MHz\n",
state->second/910000,(state->second/910)%1000);
}
}
static void msp3400c_restore_dfp(struct i2c_client *client)
{
struct msp_state *state = i2c_get_clientdata(client);
int i;
for (i = 0; i < DFP_COUNT; i++) {
if (-1 == state->dfp_regs[i])
continue;
msp_write_dsp(client, i, state->dfp_regs[i]);
}
}
/* if the dfp_regs is set, set what's in there. Otherwise, set the default value */
static int msp34xxg_write_dfp_with_default(struct i2c_client *client,
int addr, int default_value)
{
struct msp_state *state = i2c_get_clientdata(client);
int value = default_value;
if (addr < DFP_COUNT && -1 != state->dfp_regs[addr])
value = state->dfp_regs[addr];
return msp_write_dsp(client, addr, value);
}
/* ----------------------------------------------------------------------- */
static int autodetect_stereo(struct i2c_client *client)
{
struct msp_state *state = i2c_get_clientdata(client);
int val;
int rxsubchans = state->rxsubchans;
int newnicam = state->nicam_on;
int update = 0;
switch (state->mode) {
case MSP_MODE_FM_TERRA:
val = msp_read_dsp(client, 0x18);
if (val > 32767)
val -= 65536;
msp_dbg2("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 = msp_read_dem(client, 0x23);
msp_dbg2("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 = msp_read_dem(client, 0x200);
msp_dbg2("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 != state->rxsubchans) {
update = 1;
msp_dbg1("watch: rxsubchans %d => %d\n",
state->rxsubchans,rxsubchans);
state->rxsubchans = rxsubchans;
}
if (newnicam != state->nicam_on) {
update = 1;
msp_dbg1("watch: nicam %d => %d\n",
state->nicam_on,newnicam);
state->nicam_on = newnicam;
}
return update;
}
/*
* A kernel thread for msp3400 control -- we don't want to block the
* in the ioctl while doing the sound carrier & stereo detect
*/
static int msp_sleep(struct msp_state *state, int timeout)
{
DECLARE_WAITQUEUE(wait, current);
add_wait_queue(&state->wq, &wait);
if (!kthread_should_stop()) {
if (timeout < 0) {
set_current_state(TASK_INTERRUPTIBLE);
schedule();
} else {
schedule_timeout_interruptible
(msecs_to_jiffies(timeout));
}
}
remove_wait_queue(&state->wq, &wait);
try_to_freeze();
return state->restart;
}
/* stereo/multilang monitoring */
static void watch_stereo(struct i2c_client *client)
{
struct msp_state *state = i2c_get_clientdata(client);
if (autodetect_stereo(client)) {
if (state->stereo & V4L2_TUNER_MODE_STEREO)
msp3400c_setstereo(client, V4L2_TUNER_MODE_STEREO);
else if (state->stereo & VIDEO_SOUND_LANG1)
msp3400c_setstereo(client, V4L2_TUNER_MODE_LANG1);
else
msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
}
if (once)
state->watch_stereo = 0;
}
static int msp3400c_thread(void *data)
{
struct i2c_client *client = data;
struct msp_state *state = i2c_get_clientdata(client);
struct msp3400c_carrier_detect *cd;
int count, max1,max2,val1,val2, val,this;
msp_info("msp3400 daemon started\n");
for (;;) {
msp_dbg2("msp3400 thread: sleep\n");
msp_sleep(state, -1);
msp_dbg2("msp3400 thread: wakeup\n");
restart:
msp_dbg1("thread: restart scan\n");
state->restart = 0;
if (kthread_should_stop())
break;
if (VIDEO_MODE_RADIO == state->norm ||
MSP_MODE_EXTERN == state->mode) {
/* no carrier scan, just unmute */
msp_info("thread: no carrier scan\n");
msp_set_audio(client);
continue;
}
/* mute */
msp_set_mute(client);
msp3400c_setmode(client, MSP_MODE_AM_DETECT /* +1 */ );
val1 = val2 = 0;
max1 = max2 = -1;
state->watch_stereo = 0;
/* some time for the tuner to sync */
if (msp_sleep(state,200))
goto restart;
/* carrier detect pass #1 -- main carrier */
cd = msp3400c_carrier_detect_main;
count = ARRAY_SIZE(msp3400c_carrier_detect_main);
if (amsound && (state->norm == VIDEO_MODE_SECAM)) {
/* autodetect doesn't work well with AM ... */
max1 = 3;
count = 0;
msp_dbg1("AM sound override\n");
}
for (this = 0; this < count; this++) {
msp3400c_setcarrier(client, cd[this].cdo,cd[this].cdo);
if (msp_sleep(state,100))
goto restart;
val = msp_read_dsp(client, 0x1b);
if (val > 32767)
val -= 65536;
if (val1 < val)
val1 = val, max1 = this;
msp_dbg1("carrier1 val: %5d / %s\n", val,cd[this].name);
}
/* carrier detect pass #2 -- second (stereo) carrier */
switch (max1) {
case 1: /* 5.5 */
cd = msp3400c_carrier_detect_55;
count = ARRAY_SIZE(msp3400c_carrier_detect_55);
break;
case 3: /* 6.5 */
cd = msp3400c_carrier_detect_65;
count = ARRAY_SIZE(msp3400c_carrier_detect_65);
break;
case 0: /* 4.5 */
case 2: /* 6.0 */
default:
cd = NULL;
count = 0;
break;
}
if (amsound && (state->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 (msp_sleep(state,100))
goto restart;
val = msp_read_dsp(client, 0x1b);
if (val > 32767)
val -= 65536;
if (val2 < val)
val2 = val, max2 = this;
msp_dbg1("carrier2 val: %5d / %s\n", val,cd[this].name);
}
/* program the msp3400 according to the results */
state->main = msp3400c_carrier_detect_main[max1].cdo;
switch (max1) {
case 1: /* 5.5 */
if (max2 == 0) {
/* B/G FM-stereo */
state->second = msp3400c_carrier_detect_55[max2].cdo;
msp3400c_setmode(client, MSP_MODE_FM_TERRA);
state->nicam_on = 0;
msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
state->watch_stereo = 1;
} else if (max2 == 1 && HAVE_NICAM(state)) {
/* B/G NICAM */
state->second = msp3400c_carrier_detect_55[max2].cdo;
msp3400c_setmode(client, MSP_MODE_FM_NICAM1);
state->nicam_on = 1;
msp3400c_setcarrier(client, state->second, state->main);
state->watch_stereo = 1;
} else {
goto no_second;
}
break;
case 2: /* 6.0 */
/* PAL I NICAM */
state->second = MSP_CARRIER(6.552);
msp3400c_setmode(client, MSP_MODE_FM_NICAM2);
state->nicam_on = 1;
msp3400c_setcarrier(client, state->second, state->main);
state->watch_stereo = 1;
break;
case 3: /* 6.5 */
if (max2 == 1 || max2 == 2) {
/* D/K FM-stereo */
state->second = msp3400c_carrier_detect_65[max2].cdo;
msp3400c_setmode(client, MSP_MODE_FM_TERRA);
state->nicam_on = 0;
msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
state->watch_stereo = 1;
} else if (max2 == 0 &&
state->norm == VIDEO_MODE_SECAM) {
/* L NICAM or AM-mono */
state->second = msp3400c_carrier_detect_65[max2].cdo;
msp3400c_setmode(client, MSP_MODE_AM_NICAM);
state->nicam_on = 0;
msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
msp3400c_setcarrier(client, state->second, state->main);
/* volume prescale for SCART (AM mono input) */
msp_write_dsp(client, 0x000d, 0x1900);
state->watch_stereo = 1;
} else if (max2 == 0 && HAVE_NICAM(state)) {
/* D/K NICAM */
state->second = msp3400c_carrier_detect_65[max2].cdo;
msp3400c_setmode(client, MSP_MODE_FM_NICAM1);
state->nicam_on = 1;
msp3400c_setcarrier(client, state->second, state->main);
state->watch_stereo = 1;
} else {
goto no_second;
}
break;
case 0: /* 4.5 */
default:
no_second:
state->second = msp3400c_carrier_detect_main[max1].cdo;
msp3400c_setmode(client, MSP_MODE_FM_TERRA);
state->nicam_on = 0;
msp3400c_setcarrier(client, state->second, state->main);
state->rxsubchans = V4L2_TUNER_SUB_MONO;
msp3400c_setstereo(client, V4L2_TUNER_MODE_MONO);
break;
}
/* unmute */
msp_set_audio(client);
msp3400c_restore_dfp(client);
if (debug)
msp3400c_print_mode(client);
/* monitor tv audio mode */
while (state->watch_stereo) {
if (msp_sleep(state,5000))
goto restart;
watch_stereo(client);
}
}
msp_dbg1("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, "could not detect sound standard" },
{ 0x0001, 0, 0, "autodetect started" },
{ 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 *msp_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 msp_modus(struct i2c_client *client, int norm)
{
switch (norm) {
case VIDEO_MODE_PAL:
msp_dbg1("video mode selected to PAL\n");
#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 */
msp_dbg1("video mode selected to NTSC\n");
return 0x2003;
case VIDEO_MODE_SECAM:
msp_dbg1("video mode selected to SECAM\n");
return 0x0003;
case VIDEO_MODE_RADIO:
msp_dbg1("video mode selected to Radio\n");
return 0x0003;
case VIDEO_MODE_AUTO:
msp_dbg1("video mode selected to Auto\n");
return 0x2003;
default:
return 0x0003;
}
}
static int msp_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 msp_state *state = i2c_get_clientdata(client);
int mode,val,i,std;
msp_info("msp3410 daemon started\n");
for (;;) {
msp_dbg2("msp3410 thread: sleep\n");
msp_sleep(state,-1);
msp_dbg2("msp3410 thread: wakeup\n");
restart:
msp_dbg1("thread: restart scan\n");
state->restart = 0;
if (kthread_should_stop())
break;
if (state->mode == MSP_MODE_EXTERN) {
/* no carrier scan needed, just unmute */
msp_dbg1("thread: no carrier scan\n");
msp_set_audio(client);
continue;
}
/* put into sane state (and mute) */
msp_reset(client);
/* some time for the tuner to sync */
if (msp_sleep(state,200))
goto restart;
/* start autodetect */
mode = msp_modus(client, state->norm);
std = msp_standard(state->norm);
msp_write_dem(client, 0x30, mode);
msp_write_dem(client, 0x20, std);
state->watch_stereo = 0;
if (debug)
msp_dbg1("setting mode: %s (0x%04x)\n",
msp_standard_mode_name(std) ,std);
if (std != 1) {
/* programmed some specific mode */
val = std;
} else {
/* triggered autodetect */
for (;;) {
if (msp_sleep(state,100))
goto restart;
/* check results */
val = msp_read_dem(client, 0x7e);
if (val < 0x07ff)
break;
msp_dbg1("detection still in progress\n");
}
}
for (i = 0; modelist[i].name != NULL; i++)
if (modelist[i].retval == val)
break;
msp_dbg1("current mode: %s (0x%04x)\n",
modelist[i].name ? modelist[i].name : "unknown",
val);
state->main = modelist[i].main;
state->second = modelist[i].second;
if (amsound && (state->norm == VIDEO_MODE_SECAM) && (val != 0x0009)) {
/* autodetection has failed, let backup */
msp_dbg1("autodetection failed,"
" switching to backup mode: %s (0x%04x)\n",
modelist[8].name ? modelist[8].name : "unknown",val);
val = 0x0009;
msp_write_dem(client, 0x20, val);
}
/* set various prescales */
msp_write_dsp(client, 0x0d, 0x1900); /* scart */
msp_write_dsp(client, 0x0e, 0x2403); /* FM */
msp_write_dsp(client, 0x10, 0x5a00); /* nicam */
/* set stereo */
switch (val) {
case 0x0008: /* B/G NICAM */
case 0x000a: /* I NICAM */
if (val == 0x0008)
state->mode = MSP_MODE_FM_NICAM1;
else
state->mode = MSP_MODE_FM_NICAM2;
/* just turn on stereo */
state->rxsubchans = V4L2_TUNER_SUB_STEREO;
state->nicam_on = 1;
state->watch_stereo = 1;
msp3400c_setstereo(client,V4L2_TUNER_MODE_STEREO);
break;
case 0x0009:
state->mode = MSP_MODE_AM_NICAM;
state->rxsubchans = V4L2_TUNER_SUB_MONO;
state->nicam_on = 1;
msp3400c_setstereo(client,V4L2_TUNER_MODE_MONO);
state->watch_stereo = 1;
break;
case 0x0020: /* BTSC */
/* just turn on stereo */
state->mode = MSP_MODE_BTSC;
state->rxsubchans = V4L2_TUNER_SUB_STEREO;
state->nicam_on = 0;
state->watch_stereo = 1;
msp3400c_setstereo(client,V4L2_TUNER_MODE_STEREO);
break;
case 0x0040: /* FM radio */
state->mode = MSP_MODE_FM_RADIO;
state->rxsubchans = V4L2_TUNER_SUB_STEREO;
state->audmode = V4L2_TUNER_MODE_STEREO;
state->nicam_on = 0;
state->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 */
msp_set_scart(client,SCART_IN2,0);
/* msp34xx does radio decoding */
msp_write_dsp(client, 0x08, 0x0020);
msp_write_dsp(client, 0x09, 0x0020);
msp_write_dsp(client, 0x0b, 0x0020);
break;
case 0x0003:
case 0x0004:
case 0x0005:
state->mode = MSP_MODE_FM_TERRA;
state->rxsubchans = V4L2_TUNER_SUB_MONO;
state->audmode = V4L2_TUNER_MODE_MONO;
state->nicam_on = 0;
state->watch_stereo = 1;
break;
}
/* unmute, restore misc registers */
msp_set_audio(client);
msp_write_dsp(client, 0x13, state->acb);
msp_write_dem(client, 0x40, state->i2s_mode);
msp3400c_restore_dfp(client);
/* monitor tv audio mode */
while (state->watch_stereo) {
if (msp_sleep(state,5000))
goto restart;
watch_stereo(client);
}
}
msp_dbg1("thread: exit\n");
return 0;
}
/* ----------------------------------------------------------------------- */
/* msp34xxG + (autoselect no-thread) */
/* this one uses both automatic standard detection and automatic sound */
/* select which are available in the newer G versions */
/* struct msp: only norm, acb and source are really used in this mode */
/* 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 msp_state *state = 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);
msp_dbg1("set source to %d (0x%x)\n", source, value);
/* Loudspeaker Output */
msp_write_dsp(client, 0x08, value);
/* SCART1 DA Output */
msp_write_dsp(client, 0x0a, value);
/* Quasi-peak detector */
msp_write_dsp(client, 0x0c, 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
*/
/* a2 threshold for stereo/bilingual */
msp_write_dem(client, 0x22, stereo_threshold);
state->source = source;
}
/* (re-)initialize the msp34xxg, according to the current norm in state->norm
* return 0 if it worked, -1 if it failed
*/
static int msp34xxg_reset(struct i2c_client *client)
{
struct msp_state *state = i2c_get_clientdata(client);
int modus, std;
if (msp_reset(client))
return -1;
/* make sure that input/output is muted (paranoid mode) */
/* ACB, mute DSP input, mute SCART 1 */
if (msp_write_dsp(client, 0x13, 0x0f20))
return -1;
msp_write_dem(client, 0x40, state->i2s_mode);
/* step-by-step initialisation, as described in the manual */
modus = msp_modus(client, state->norm);
std = msp_standard(state->norm);
modus &= ~0x03; /* STATUS_CHANGE = 0 */
modus |= 0x01; /* AUTOMATIC_SOUND_DETECTION = 1 */
if (msp_write_dem(client, 0x30, modus))
return -1;
if (msp_write_dem(client, 0x20, std))
return -1;
/* write the dfps that may have an influence on
standard/audio autodetection right now */
msp34xxg_set_source(client, state->source);
/* AM/FM Prescale, default: [15:8] 75khz deviation */
if (msp34xxg_write_dfp_with_default(client, 0x0e, 0x3000))
return -1;
/* NICAM Prescale, default: 9db gain (as recommended) */
if (msp34xxg_write_dfp_with_default(client, 0x10, 0x5a00))
return -1;
return 0;
}
static int msp34xxg_thread(void *data)
{
struct i2c_client *client = data;
struct msp_state *state = i2c_get_clientdata(client);
int val, std, i;
msp_info("msp34xxg daemon started\n");
state->source = 1; /* default */
for (;;) {
msp_dbg2("msp34xxg thread: sleep\n");
msp_sleep(state, -1);
msp_dbg2("msp34xxg thread: wakeup\n");
restart:
msp_dbg1("thread: restart scan\n");
state->restart = 0;
if (kthread_should_stop())
break;
/* setup the chip*/
msp34xxg_reset(client);
std = standard;
if (std != 0x01)
goto unmute;
/* watch autodetect */
msp_dbg1("triggered autodetect, waiting for result\n");
for (i = 0; i < 10; i++) {
if (msp_sleep(state, 100))
goto restart;
/* check results */
val = msp_read_dem(client, 0x7e);
if (val < 0x07ff) {
std = val;
break;
}
msp_dbg1("detection still in progress\n");
}
if (std == 1) {
msp_dbg1("detection still in progress after 10 tries. giving up.\n");
continue;
}
unmute:
state->mode = std;
msp_dbg1("current mode: %s (0x%04x)\n",
msp_standard_mode_name(std), std);
/* unmute: dispatch sound to scart output, set scart volume */
msp_set_audio(client);
/* restore ACB */
if (msp_write_dsp(client, 0x13, state->acb))
return -1;
msp_write_dem(client, 0x40, state->i2s_mode);
}
msp_dbg1("thread: exit\n");
return 0;
}
static void msp34xxg_detect_stereo(struct i2c_client *client)
{
struct msp_state *state = i2c_get_clientdata(client);
int status = msp_read_dem(client, 0x0200);
int is_bilingual = status & 0x100;
int is_stereo = status & 0x40;
state->rxsubchans = 0;
if (is_stereo)
state->rxsubchans |= V4L2_TUNER_SUB_STEREO;
else
state->rxsubchans |= V4L2_TUNER_SUB_MONO;
if (is_bilingual) {
state->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.
*/
}
msp_dbg1("status=0x%x, stereo=%d, bilingual=%d -> rxsubchans=%d\n",
status, is_stereo, is_bilingual, state->rxsubchans);
}
static void msp34xxg_set_audmode(struct i2c_client *client, int audmode)
{
struct msp_state *state = 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;
}
state->audmode = audmode;
msp34xxg_set_source(client, source);
}
/* ----------------------------------------------------------------------- */
static void msp_wake_thread(struct i2c_client *client)
{
struct msp_state *state = i2c_get_clientdata(client);
if (NULL == state->kthread)
return;
msp_set_mute(client);
state->watch_stereo = 0;
state->restart = 1;
wake_up_interruptible(&state->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 (mode == 0)
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 msp_state *state = i2c_get_clientdata(client);
switch (state->opmode) {
case OPMODE_MANUAL:
case OPMODE_AUTODETECT:
autodetect_stereo(client);
break;
case OPMODE_AUTOSELECT:
msp34xxg_detect_stereo(client);
break;
}
}
static struct v4l2_queryctrl msp_qctrl[] = {
{
.id = V4L2_CID_AUDIO_VOLUME,
.name = "Volume",
.minimum = 0,
.maximum = 65535,
.step = 65535/100,
.default_value = 58880,
.flags = 0,
.type = V4L2_CTRL_TYPE_INTEGER,
},{
.id = V4L2_CID_AUDIO_MUTE,
.name = "Mute",
.minimum = 0,
.maximum = 1,
.step = 1,
.default_value = 1,
.flags = 0,
.type = V4L2_CTRL_TYPE_BOOLEAN,
},{
.id = V4L2_CID_AUDIO_BASS,
.name = "Bass",
.minimum = 0,
.maximum = 65535,
.step = 65535/100,
.default_value = 32768,
.type = V4L2_CTRL_TYPE_INTEGER,
},{
.id = V4L2_CID_AUDIO_TREBLE,
.name = "Treble",
.minimum = 0,
.maximum = 65535,
.step = 65535/100,
.default_value = 32768,
.type = V4L2_CTRL_TYPE_INTEGER,
},
};
static void msp_any_set_audmode(struct i2c_client *client, int audmode)
{
struct msp_state *state = i2c_get_clientdata(client);
switch (state->opmode) {
case OPMODE_MANUAL:
case OPMODE_AUTODETECT:
state->watch_stereo = 0;
msp3400c_setstereo(client, audmode);
break;
case OPMODE_AUTOSELECT:
msp34xxg_set_audmode(client, audmode);
break;
}
}
static int msp_get_ctrl(struct i2c_client *client, struct v4l2_control *ctrl)
{
struct msp_state *state = i2c_get_clientdata(client);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
ctrl->value = state->muted;
break;
case V4L2_CID_AUDIO_BALANCE:
ctrl->value = state->balance;
break;
case V4L2_CID_AUDIO_BASS:
ctrl->value = state->bass;
break;
case V4L2_CID_AUDIO_TREBLE:
ctrl->value = state->treble;
break;
case V4L2_CID_AUDIO_VOLUME:
ctrl->value = state->volume;
break;
default:
return -EINVAL;
}
return 0;
}
static int msp_set_ctrl(struct i2c_client *client, struct v4l2_control *ctrl)
{
struct msp_state *state = i2c_get_clientdata(client);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
if (ctrl->value < 0 || ctrl->value >= 2)
return -ERANGE;
state->muted = ctrl->value;
break;
case V4L2_CID_AUDIO_BASS:
state->bass = ctrl->value;
break;
case V4L2_CID_AUDIO_TREBLE:
state->treble = ctrl->value;
break;
case V4L2_CID_AUDIO_BALANCE:
state->balance = ctrl->value;
break;
case V4L2_CID_AUDIO_VOLUME:
state->volume = ctrl->value;
if (state->volume == 0)
state->balance = 32768;
break;
default:
return -EINVAL;
}
msp_set_audio(client);
return 0;
}
static int msp_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
struct msp_state *state = i2c_get_clientdata(client);
u16 *sarg = arg;
int scart = 0;
if (debug >= 2)
v4l_i2c_print_ioctl(client, cmd);
switch (cmd) {
case AUDC_SET_INPUT:
if (*sarg == state->input)
break;
state->input = *sarg;
switch (*sarg) {
case AUDIO_RADIO:
/* Hauppauge uses IN2 for the radio */
state->mode = MSP_MODE_FM_RADIO;
scart = SCART_IN2;
break;
case AUDIO_EXTERN_1:
/* IN1 is often used for external input ... */
state->mode = MSP_MODE_EXTERN;
scart = SCART_IN1;
break;
case AUDIO_EXTERN_2:
/* ... sometimes it is IN2 through ;) */
state->mode = MSP_MODE_EXTERN;
scart = SCART_IN2;
break;
case AUDIO_TUNER:
state->mode = -1;
break;
default:
if (*sarg & AUDIO_MUTE)
msp_set_scart(client, SCART_MUTE, 0);
break;
}
if (scart) {
state->rxsubchans = V4L2_TUNER_SUB_STEREO;
state->audmode = V4L2_TUNER_MODE_STEREO;
msp_set_scart(client, scart, 0);
msp_write_dsp(client, 0x000d, 0x1900);
if (state->opmode != OPMODE_AUTOSELECT)
msp3400c_setstereo(client, state->audmode);
}
msp_wake_thread(client);
break;
case AUDC_SET_RADIO:
state->norm = VIDEO_MODE_RADIO;
msp_dbg1("switching to radio mode\n");
state->watch_stereo = 0;
switch (state->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));
msp_set_audio(client);
break;
case OPMODE_AUTODETECT:
case OPMODE_AUTOSELECT:
/* the thread will do for us */
msp_wake_thread(client);
break;
}
break;
/* work-in-progress: hook to control the DFP registers */
case MSP_SET_DFPREG:
{
struct msp_dfpreg *r = arg;
int i;
if (r->reg < 0 || r->reg >= DFP_COUNT)
return -EINVAL;
for (i = 0; i < sizeof(bl_dfp) / sizeof(int); i++)
if (r->reg == bl_dfp[i])
return -EINVAL;
state->dfp_regs[r->reg] = r->value;
msp_write_dsp(client, r->reg, r->value);
return 0;
}
case MSP_GET_DFPREG:
{
struct msp_dfpreg *r = arg;
if (r->reg < 0 || r->reg >= DFP_COUNT)
return -EINVAL;
r->value = msp_read_dsp(client, r->reg);
return 0;
}
/* --- v4l ioctls --- */
/* take care: bttv does userspace copying, we'll get a
kernel pointer here... */
case VIDIOCGAUDIO:
{
struct video_audio *va = arg;
va->flags |= VIDEO_AUDIO_VOLUME |
VIDEO_AUDIO_BASS |
VIDEO_AUDIO_TREBLE |
VIDEO_AUDIO_MUTABLE;
if (state->muted)
va->flags |= VIDEO_AUDIO_MUTE;
if (state->muted)
va->flags |= VIDEO_AUDIO_MUTE;
va->volume = state->volume;
va->balance = state->volume ? state->balance : 32768;
va->bass = state->bass;
va->treble = state->treble;
msp_any_detect_stereo(client);
va->mode = mode_v4l2_to_v4l1(state->rxsubchans);
break;
}
case VIDIOCSAUDIO:
{
struct video_audio *va = arg;
state->muted = (va->flags & VIDEO_AUDIO_MUTE);
state->volume = va->volume;
state->balance = va->balance;
state->bass = va->bass;
state->treble = va->treble;
msp_set_audio(client);
if (va->mode != 0 && state->norm != VIDEO_MODE_RADIO)
msp_any_set_audmode(client,mode_v4l1_to_v4l2(va->mode));
break;
}
case VIDIOCSCHAN:
{
struct video_channel *vc = arg;
state->norm = vc->norm;
msp_wake_thread(client);
break;
}
case VIDIOCSFREQ:
case VIDIOC_S_FREQUENCY:
{
/* new channel -- kick audio carrier scan */
msp_wake_thread(client);
break;
}
/* msp34xx specific */
case MSP_SET_MATRIX:
{
struct msp_matrix *mspm = arg;
msp_set_scart(client, mspm->input, mspm->output);
break;
}
/* --- v4l2 ioctls --- */
case VIDIOC_S_STD:
{
v4l2_std_id *id = arg;
/*FIXME: use V4L2 mode flags on msp3400 instead of V4L1*/
if (*id & V4L2_STD_PAL) {
state->norm = VIDEO_MODE_PAL;
} else if (*id & V4L2_STD_SECAM) {
state->norm = VIDEO_MODE_SECAM;
} else {
state->norm = VIDEO_MODE_NTSC;
}
msp_wake_thread(client);
return 0;
}
case VIDIOC_ENUMINPUT:
{
struct v4l2_input *i = arg;
if (i->index != 0)
return -EINVAL;
i->type = V4L2_INPUT_TYPE_TUNER;
switch (i->index) {
case AUDIO_RADIO:
strcpy(i->name, "Radio");
break;
case AUDIO_EXTERN_1:
strcpy(i->name, "Extern 1");
break;
case AUDIO_EXTERN_2:
strcpy(i->name, "Extern 2");
break;
case AUDIO_TUNER:
strcpy(i->name, "Television");
break;
default:
return -EINVAL;
}
return 0;
}
case VIDIOC_G_AUDIO:
{
struct v4l2_audio *a = arg;
memset(a, 0, sizeof(*a));
switch (a->index) {
case AUDIO_RADIO:
strcpy(a->name, "Radio");
break;
case AUDIO_EXTERN_1:
strcpy(a->name, "Extern 1");
break;
case AUDIO_EXTERN_2:
strcpy(a->name, "Extern 2");
break;
case AUDIO_TUNER:
strcpy(a->name, "Television");
break;
default:
return -EINVAL;
}
msp_any_detect_stereo(client);
if (state->audmode == V4L2_TUNER_MODE_STEREO) {
a->capability = V4L2_AUDCAP_STEREO;
}
break;
}
case VIDIOC_S_AUDIO:
{
struct v4l2_audio *sarg = arg;
switch (sarg->index) {
case AUDIO_RADIO:
/* Hauppauge uses IN2 for the radio */
state->mode = MSP_MODE_FM_RADIO;
scart = SCART_IN2;
break;
case AUDIO_EXTERN_1:
/* IN1 is often used for external input ... */
state->mode = MSP_MODE_EXTERN;
scart = SCART_IN1;
break;
case AUDIO_EXTERN_2:
/* ... sometimes it is IN2 through ;) */
state->mode = MSP_MODE_EXTERN;
scart = SCART_IN2;
break;
case AUDIO_TUNER:
state->mode = -1;
break;
}
if (scart) {
state->rxsubchans = V4L2_TUNER_SUB_STEREO;
state->audmode = V4L2_TUNER_MODE_STEREO;
msp_set_scart(client, scart, 0);
msp_write_dsp(client, 0x000d, 0x1900);
}
if (sarg->capability == V4L2_AUDCAP_STEREO) {
state->audmode = V4L2_TUNER_MODE_STEREO;
} else {
state->audmode &= ~V4L2_TUNER_MODE_STEREO;
}
msp_any_set_audmode(client, state->audmode);
msp_wake_thread(client);
break;
}
case VIDIOC_G_TUNER:
{
struct v4l2_tuner *vt = arg;
msp_any_detect_stereo(client);
vt->audmode = state->audmode;
vt->rxsubchans = state->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;
}
case VIDIOC_G_AUDOUT:
{
struct v4l2_audioout *a = (struct v4l2_audioout *)arg;
int idx = a->index;
memset(a, 0, sizeof(*a));
switch (idx) {
case 0:
strcpy(a->name, "Scart1 Out");
break;
case 1:
strcpy(a->name, "Scart2 Out");
break;
case 2:
strcpy(a->name, "I2S Out");
break;
default:
return -EINVAL;
}
break;
}
case VIDIOC_S_AUDOUT:
{
struct v4l2_audioout *a = (struct v4l2_audioout *)arg;
if (a->index < 0 || a->index > 2)
return -EINVAL;
msp_dbg1("Setting audio out on msp34xx to input %i\n", a->index);
msp_set_scart(client, state->in_scart, a->index + 1);
break;
}
case VIDIOC_INT_I2S_CLOCK_FREQ:
{
u32 *a = (u32 *)arg;
msp_dbg1("Setting I2S speed to %d\n", *a);
switch (*a) {
case 1024000:
state->i2s_mode = 0;
break;
case 2048000:
state->i2s_mode = 1;
break;
default:
return -EINVAL;
}
break;
}
case VIDIOC_QUERYCTRL:
{
struct v4l2_queryctrl *qc = arg;
int i;
for (i = 0; i < ARRAY_SIZE(msp_qctrl); i++)
if (qc->id && qc->id == msp_qctrl[i].id) {
memcpy(qc, &msp_qctrl[i], sizeof(*qc));
return 0;
}
return -EINVAL;
}
case VIDIOC_G_CTRL:
return msp_get_ctrl(client, arg);
case VIDIOC_S_CTRL:
return msp_set_ctrl(client, arg);
case VIDIOC_LOG_STATUS:
msp_any_detect_stereo(client);
msp_info("%s rev1 = 0x%04x rev2 = 0x%04x\n",
client->name, state->rev1, state->rev2);
msp_info("Audio: volume %d balance %d bass %d treble %d%s\n",
state->volume, state->balance,
state->bass, state->treble,
state->muted ? " (muted)" : "");
msp_info("Mode: %s (%s%s)\n", msp_standard_mode_name(state->mode),
(state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
(state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
msp_info("ACB: 0x%04x\n", state->acb);
break;
default:
/* nothing */
break;
}
return 0;
}
static int msp_suspend(struct device * dev, pm_message_t state)
{
struct i2c_client *client = container_of(dev, struct i2c_client, dev);
msp_dbg1("suspend\n");
msp_reset(client);
return 0;
}
static int msp_resume(struct device * dev)
{
struct i2c_client *client = container_of(dev, struct i2c_client, dev);
msp_dbg1("resume\n");
msp_wake_thread(client);
return 0;
}
/* ----------------------------------------------------------------------- */
static struct i2c_driver i2c_driver;
static int msp_attach(struct i2c_adapter *adapter, int address, int kind)
{
struct i2c_client *client;
struct msp_state *state;
int (*thread_func)(void *data) = NULL;
int i;
client = kmalloc(sizeof(*client), GFP_KERNEL);
if (client == NULL)
return -ENOMEM;
memset(client, 0, sizeof(*client));
client->addr = address;
client->adapter = adapter;
client->driver = &i2c_driver;
client->flags = I2C_CLIENT_ALLOW_USE;
snprintf(client->name, sizeof(client->name) - 1, "msp3400");
if (msp_reset(client) == -1) {
msp_dbg1("msp3400 not found\n");
kfree(client);
return -1;
}
state = kmalloc(sizeof(*state), GFP_KERNEL);
if (state == NULL) {
kfree(client);
return -ENOMEM;
}
i2c_set_clientdata(client, state);
memset(state, 0, sizeof(*state));
state->norm = VIDEO_MODE_NTSC;
state->volume = 58880; /* 0db gain */
state->balance = 32768; /* 0db gain */
state->bass = 32768;
state->treble = 32768;
state->input = -1;
state->muted = 0;
state->i2s_mode = 0;
for (i = 0; i < DFP_COUNT; i++)
state->dfp_regs[i] = -1;
init_waitqueue_head(&state->wq);
state->rev1 = msp_read_dsp(client, 0x1e);
if (state->rev1 != -1)
state->rev2 = msp_read_dsp(client, 0x1f);
msp_dbg1("rev1=0x%04x, rev2=0x%04x\n", state->rev1, state->rev2);
if (state->rev1 == -1 || (state->rev1 == 0 && state->rev2 == 0)) {
msp_dbg1("error while reading chip version\n");
kfree(state);
kfree(client);
return -1;
}
msp_set_audio(client);
snprintf(client->name, sizeof(client->name), "MSP%c4%02d%c-%c%d",
((state->rev1 >> 4) & 0x0f) + '3',
(state->rev2 >> 8) & 0xff,
(state->rev1 & 0x0f) + '@',
((state->rev1 >> 8) & 0xff) + '@',
state->rev2 & 0x1f);
state->opmode = opmode;
if (state->opmode == OPMODE_AUTO) {
/* MSP revision G and up have both autodetect and autoselect */
if ((state->rev1 & 0x0f) >= 'G'-'@')
state->opmode = OPMODE_AUTOSELECT;
/* MSP revision D and up have autodetect */
else if ((state->rev1 & 0x0f) >= 'D'-'@')
state->opmode = OPMODE_AUTODETECT;
else
state->opmode = OPMODE_MANUAL;
}
/* hello world :-) */
msp_info("%s found @ 0x%x (%s)\n", client->name, address << 1, adapter->name);
msp_info("%s ", client->name);
if (HAVE_NICAM(state) && HAVE_RADIO(state))
printk("supports nicam and radio, ");
else if (HAVE_NICAM(state))
printk("supports nicam, ");
else if (HAVE_RADIO(state))
printk("supports radio, ");
printk("mode is ");
/* version-specific initialization */
switch (state->opmode) {
case OPMODE_MANUAL:
printk("manual");
thread_func = msp3400c_thread;
break;
case OPMODE_AUTODETECT:
printk("autodetect");
thread_func = msp3410d_thread;
break;
case OPMODE_AUTOSELECT:
printk("autodetect and autoselect");
thread_func = msp34xxg_thread;
break;
}
printk("\n");
/* startup control thread if needed */
if (thread_func) {
state->kthread = kthread_run(thread_func, client, "msp34xx");
if (state->kthread == NULL)
msp_warn("kernel_thread() failed\n");
msp_wake_thread(client);
}
/* done */
i2c_attach_client(client);
return 0;
}
static int msp_probe(struct i2c_adapter *adapter)
{
if (adapter->class & I2C_CLASS_TV_ANALOG)
return i2c_probe(adapter, &addr_data, msp_attach);
return 0;
}
static int msp_detach(struct i2c_client *client)
{
struct msp_state *state = i2c_get_clientdata(client);
int err;
/* shutdown control thread */
if (state->kthread) {
state->restart = 1;
kthread_stop(state->kthread);
}
msp_reset(client);
err = i2c_detach_client(client);
if (err) {
return err;
}
kfree(state);
kfree(client);
return 0;
}
/* ----------------------------------------------------------------------- */
/* i2c implementation */
static struct i2c_driver i2c_driver = {
.name = "msp3400",
.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,
},
.owner = THIS_MODULE,
};
static int __init msp3400_init_module(void)
{
return i2c_add_driver(&i2c_driver);
}
static void __exit msp3400_cleanup_module(void)
{
i2c_del_driver(&i2c_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:
*/