openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity
linux/drivers/media/video/msp3400-driver.c

1025 lines
28 KiB
C
Raw Blame History

/*
* Programming the mspx4xx 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
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/videodev.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/tvaudio.h>
#include <media/msp3400.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include "msp3400-driver.h"
/* ---------------------------------------------------------------------- */
MODULE_DESCRIPTION("device driver for msp34xx TV sound processor");
MODULE_AUTHOR("Gerd Knorr");
MODULE_LICENSE("GPL");
/* module parameters */
static int opmode = OPMODE_AUTO;
int msp_debug; /* msp_debug output */
int msp_once; /* no continous stereo monitoring */
int msp_amsound; /* hard-wire AM sound at 6.5 Hz (france),
the autoscan seems work well only with FM... */
int msp_standard = 1; /* Override auto detect of audio msp_standard, if needed. */
int msp_dolby;
int msp_stereo_thresh = 0x190; /* a2 threshold for stereo/bilingual
(msp34xxg only) 0x00a0-0x03c0 */
/* read-only */
module_param(opmode, int, 0444);
/* read-write */
module_param_named(once,msp_once, bool, 0644);
module_param_named(debug,msp_debug, int, 0644);
module_param_named(stereo_threshold,msp_stereo_thresh, int, 0644);
module_param_named(standard,msp_standard, int, 0644);
module_param_named(amsound,msp_amsound, bool, 0644);
module_param_named(dolby,msp_dolby, bool, 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 [0-3]");
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");
/* ---------------------------------------------------------------------- */
/* 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 };
I2C_CLIENT_INSMOD;
/* ----------------------------------------------------------------------- */
/* functions for talking to the MSP3400C Sound processor */
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 },
};
v4l_dbg(3, msp_debug, client, "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) {
v4l_err(client, "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;
v4l_warn(client, "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) {
v4l_warn(client, "giving up, resetting chip. Sound will go off, sorry folks :-|\n");
msp_reset(client);
return -1;
}
retval = read[0] << 8 | read[1];
v4l_dbg(3, msp_debug, client, "msp_read(0x%x, 0x%x): 0x%x\n", dev, addr, retval);
return retval;
}
int msp_read_dem(struct i2c_client *client, int addr)
{
return msp_read(client, I2C_MSP_DEM, addr);
}
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;
v4l_dbg(3, msp_debug, client, "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;
v4l_warn(client, "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) {
v4l_warn(client, "giving up, resetting chip. Sound will go off, sorry folks :-|\n");
msp_reset(client);
return -1;
}
return 0;
}
int msp_write_dem(struct i2c_client *client, int addr, int val)
{
return msp_write(client, I2C_MSP_DEM, addr, val);
}
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 IN3 IN4 IN1_DA IN2_DA MONO MUTE */
/* SCART DSP Input select */
{ 0x0320, 0x0000, 0x0200, 0x0300, 0x0020, -1, -1, 0x0100, 0x0320 },
/* SCART1 Output select */
{ 0x0c40, 0x0440, 0x0400, 0x0000, 0x0840, 0x0c00, 0x0040, 0x0800, 0x0c40 },
/* SCART2 Output select */
{ 0x3080, 0x1000, 0x1080, 0x2080, 0x3080, 0x0000, 0x0080, 0x2000, 0x3000 },
};
static char *scart_names[] = {
"in1", "in2", "in3", "in4", "in1 da", "in2 da", "mono", "mute"
};
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 >= 0 && in <= 7 && out >= 0 && out <= 2) {
if (-1 == scarts[out][in + 1])
return;
state->acb &= ~scarts[out][0];
state->acb |= scarts[out][in + 1];
} else
state->acb = 0xf60; /* Mute Input and SCART 1 Output */
v4l_dbg(1, msp_debug, client, "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 */
if (state->has_i2s_conf)
msp_write_dem(client, 0x40, state->i2s_mode);
}
void msp_set_audio(struct i2c_client *client)
{
struct msp_state *state = i2c_get_clientdata(client);
int bal = 0, bass, treble, loudness;
int val = 0;
int reallymuted = state->muted | state->scan_in_progress;
if (!reallymuted)
val = (state->volume * 0x7f / 65535) << 8;
v4l_dbg(1, msp_debug, client, "mute=%s scanning=%s volume=%d\n",
state->muted ? "on" : "off", state->scan_in_progress ? "yes" : "no",
state->volume);
msp_write_dsp(client, 0x0000, val);
msp_write_dsp(client, 0x0007, reallymuted ? 0x1 : (val | 0x1));
if (state->has_scart2_out_volume)
msp_write_dsp(client, 0x0040, reallymuted ? 0x1 : (val | 0x1));
if (state->has_headphones)
msp_write_dsp(client, 0x0006, val);
if (!state->has_sound_processing)
return;
if (val)
bal = (u8)((state->balance / 256) - 128);
bass = ((state->bass - 32768) * 0x60 / 65535) << 8;
treble = ((state->treble - 32768) * 0x60 / 65535) << 8;
loudness = state->loudness ? ((5 * 4) << 8) : 0;
v4l_dbg(1, msp_debug, client, "balance=%d bass=%d treble=%d loudness=%d\n",
state->balance, state->bass, state->treble, state->loudness);
msp_write_dsp(client, 0x0001, bal << 8);
msp_write_dsp(client, 0x0002, bass);
msp_write_dsp(client, 0x0003, treble);
msp_write_dsp(client, 0x0004, loudness);
if (!state->has_headphones)
return;
msp_write_dsp(client, 0x0030, bal << 8);
msp_write_dsp(client, 0x0031, bass);
msp_write_dsp(client, 0x0032, treble);
msp_write_dsp(client, 0x0033, loudness);
}
/* ------------------------------------------------------------------------ */
static void msp_wake_thread(struct i2c_client *client)
{
struct msp_state *state = i2c_get_clientdata(client);
if (NULL == state->kthread)
return;
state->watch_stereo = 0;
state->restart = 1;
wake_up_interruptible(&state->wq);
}
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;
}
/* ------------------------------------------------------------------------ */
#ifdef CONFIG_VIDEO_V4L1
static int msp_mode_v4l2_to_v4l1(int rxsubchans, int audmode)
{
if (rxsubchans == V4L2_TUNER_SUB_MONO)
return VIDEO_SOUND_MONO;
if (rxsubchans == V4L2_TUNER_SUB_STEREO)
return VIDEO_SOUND_STEREO;
if (audmode == V4L2_TUNER_MODE_LANG2)
return VIDEO_SOUND_LANG2;
return VIDEO_SOUND_LANG1;
}
static int msp_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;
}
#endif
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_VOLUME:
ctrl->value = state->volume;
break;
case V4L2_CID_AUDIO_MUTE:
ctrl->value = state->muted;
break;
case V4L2_CID_AUDIO_BALANCE:
if (!state->has_sound_processing)
return -EINVAL;
ctrl->value = state->balance;
break;
case V4L2_CID_AUDIO_BASS:
if (!state->has_sound_processing)
return -EINVAL;
ctrl->value = state->bass;
break;
case V4L2_CID_AUDIO_TREBLE:
if (!state->has_sound_processing)
return -EINVAL;
ctrl->value = state->treble;
break;
case V4L2_CID_AUDIO_LOUDNESS:
if (!state->has_sound_processing)
return -EINVAL;
ctrl->value = state->loudness;
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_VOLUME:
state->volume = ctrl->value;
if (state->volume == 0)
state->balance = 32768;
break;
case V4L2_CID_AUDIO_MUTE:
if (ctrl->value < 0 || ctrl->value >= 2)
return -ERANGE;
state->muted = ctrl->value;
break;
case V4L2_CID_AUDIO_BASS:
if (!state->has_sound_processing)
return -EINVAL;
state->bass = ctrl->value;
break;
case V4L2_CID_AUDIO_TREBLE:
if (!state->has_sound_processing)
return -EINVAL;
state->treble = ctrl->value;
break;
case V4L2_CID_AUDIO_LOUDNESS:
if (!state->has_sound_processing)
return -EINVAL;
state->loudness = ctrl->value;
break;
case V4L2_CID_AUDIO_BALANCE:
if (!state->has_sound_processing)
return -EINVAL;
state->balance = ctrl->value;
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);
if (msp_debug >= 2)
v4l_i2c_print_ioctl(client, cmd);
switch (cmd) {
case AUDC_SET_RADIO:
if (state->radio)
return 0;
state->radio = 1;
v4l_dbg(1, msp_debug, client, "switching to radio mode\n");
state->watch_stereo = 0;
switch (state->opmode) {
case OPMODE_MANUAL:
/* set msp3400 to FM radio mode */
msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
msp3400c_set_carrier(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;
/* --- v4l ioctls --- */
/* take care: bttv does userspace copying, we'll get a
kernel pointer here... */
#ifdef CONFIG_VIDEO_V4L1
case VIDIOCGAUDIO:
{
struct video_audio *va = arg;
va->flags |= VIDEO_AUDIO_VOLUME | VIDEO_AUDIO_MUTABLE;
if (state->has_sound_processing)
va->flags |= VIDEO_AUDIO_BALANCE |
VIDEO_AUDIO_BASS |
VIDEO_AUDIO_TREBLE;
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;
if (state->radio)
break;
if (state->opmode == OPMODE_AUTOSELECT)
msp_detect_stereo(client);
va->mode = msp_mode_v4l2_to_v4l1(state->rxsubchans, state->audmode);
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->radio == 0 &&
state->audmode != msp_mode_v4l1_to_v4l2(va->mode)) {
state->audmode = msp_mode_v4l1_to_v4l2(va->mode);
msp_set_audmode(client);
}
break;
}
case VIDIOCSCHAN:
{
struct video_channel *vc = arg;
int update = 0;
v4l2_std_id std;
if (state->radio)
update = 1;
state->radio = 0;
if (vc->norm == VIDEO_MODE_PAL)
std = V4L2_STD_PAL;
else if (vc->norm == VIDEO_MODE_SECAM)
std = V4L2_STD_SECAM;
else
std = V4L2_STD_NTSC;
if (std != state->v4l2_std) {
state->v4l2_std = std;
update = 1;
}
if (update)
msp_wake_thread(client);
break;
}
case VIDIOCSFREQ:
{
/* new channel -- kick audio carrier scan */
msp_wake_thread(client);
break;
}
#endif
case VIDIOC_S_FREQUENCY:
{
/* new channel -- kick audio carrier scan */
msp_wake_thread(client);
break;
}
/* --- v4l2 ioctls --- */
case VIDIOC_S_STD:
{
v4l2_std_id *id = arg;
int update = state->radio || state->v4l2_std != *id;
state->v4l2_std = *id;
state->radio = 0;
if (update)
msp_wake_thread(client);
return 0;
}
case VIDIOC_INT_G_AUDIO_ROUTING:
{
struct v4l2_routing *rt = arg;
*rt = state->routing;
break;
}
case VIDIOC_INT_S_AUDIO_ROUTING:
{
struct v4l2_routing *rt = arg;
int tuner = (rt->input >> 3) & 1;
int sc_in = rt->input & 0x7;
int sc1_out = rt->output & 0xf;
int sc2_out = (rt->output >> 4) & 0xf;
u16 val, reg;
int i;
int extern_input = 1;
if (state->routing.input == rt->input &&
state->routing.output == rt->output)
break;
state->routing = *rt;
/* check if the tuner input is used */
for (i = 0; i < 5; i++) {
if (((rt->input >> (4 + i * 4)) & 0xf) == 0)
extern_input = 0;
}
state->mode = extern_input ? MSP_MODE_EXTERN : MSP_MODE_AM_DETECT;
state->rxsubchans = V4L2_TUNER_SUB_STEREO;
msp_set_scart(client, sc_in, 0);
msp_set_scart(client, sc1_out, 1);
msp_set_scart(client, sc2_out, 2);
msp_set_audmode(client);
reg = (state->opmode == OPMODE_AUTOSELECT) ? 0x30 : 0xbb;
val = msp_read_dem(client, reg);
msp_write_dem(client, reg, (val & ~0x100) | (tuner << 8));
/* wake thread when a new input is chosen */
msp_wake_thread(client);
break;
}
case VIDIOC_G_TUNER:
{
struct v4l2_tuner *vt = arg;
if (state->radio)
break;
if (state->opmode == OPMODE_AUTOSELECT)
msp_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;
if (state->radio) /* TODO: add mono/stereo support for radio */
break;
if (state->audmode == vt->audmode)
break;
state->audmode = vt->audmode;
/* only set audmode */
msp_set_audmode(client);
break;
}
case VIDIOC_INT_I2S_CLOCK_FREQ:
{
u32 *a = (u32 *)arg;
v4l_dbg(1, msp_debug, client, "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;
switch (qc->id) {
case V4L2_CID_AUDIO_VOLUME:
case V4L2_CID_AUDIO_MUTE:
return v4l2_ctrl_query_fill_std(qc);
default:
break;
}
if (!state->has_sound_processing)
return -EINVAL;
switch (qc->id) {
case V4L2_CID_AUDIO_LOUDNESS:
case V4L2_CID_AUDIO_BALANCE:
case V4L2_CID_AUDIO_BASS:
case V4L2_CID_AUDIO_TREBLE:
return v4l2_ctrl_query_fill_std(qc);
default:
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:
{
const char *p;
if (state->opmode == OPMODE_AUTOSELECT)
msp_detect_stereo(client);
v4l_info(client, "%s rev1 = 0x%04x rev2 = 0x%04x\n",
client->name, state->rev1, state->rev2);
v4l_info(client, "Audio: volume %d%s\n",
state->volume, state->muted ? " (muted)" : "");
if (state->has_sound_processing) {
v4l_info(client, "Audio: balance %d bass %d treble %d loudness %s\n",
state->balance, state->bass, state->treble,
state->loudness ? "on" : "off");
}
switch (state->mode) {
case MSP_MODE_AM_DETECT: p = "AM (for carrier detect)"; break;
case MSP_MODE_FM_RADIO: p = "FM Radio"; break;
case MSP_MODE_FM_TERRA: p = "Terrestial FM-mono + FM-stereo"; break;
case MSP_MODE_FM_SAT: p = "Satellite FM-mono"; break;
case MSP_MODE_FM_NICAM1: p = "NICAM/FM (B/G, D/K)"; break;
case MSP_MODE_FM_NICAM2: p = "NICAM/FM (I)"; break;
case MSP_MODE_AM_NICAM: p = "NICAM/AM (L)"; break;
case MSP_MODE_BTSC: p = "BTSC"; break;
case MSP_MODE_EXTERN: p = "External input"; break;
default: p = "unknown"; break;
}
if (state->mode == MSP_MODE_EXTERN) {
v4l_info(client, "Mode: %s\n", p);
} else if (state->opmode == OPMODE_MANUAL) {
v4l_info(client, "Mode: %s (%s%s)\n", p,
(state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
(state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
} else {
if (state->opmode == OPMODE_AUTODETECT)
v4l_info(client, "Mode: %s\n", p);
v4l_info(client, "Standard: %s (%s%s)\n",
msp_standard_std_name(state->std),
(state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
(state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
}
v4l_info(client, "Audmode: 0x%04x\n", state->audmode);
v4l_info(client, "Routing: 0x%08x (input) 0x%08x (output)\n",
state->routing.input, state->routing.output);
v4l_info(client, "ACB: 0x%04x\n", state->acb);
break;
}
default:
/* unknown */
return -EINVAL;
}
return 0;
}
static int msp_suspend(struct i2c_client *client, pm_message_t state)
{
v4l_dbg(1, msp_debug, client, "suspend\n");
msp_reset(client);
return 0;
}
static int msp_resume(struct i2c_client *client)
{
v4l_dbg(1, msp_debug, client, "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 msp_hard;
int msp_family;
int msp_revision;
int msp_product, msp_prod_hi, msp_prod_lo;
int msp_rom;
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;
snprintf(client->name, sizeof(client->name) - 1, "msp3400");
if (msp_reset(client) == -1) {
v4l_dbg(1, msp_debug, client, "msp3400 not found\n");
kfree(client);
return 0;
}
state = kmalloc(sizeof(*state), GFP_KERNEL);
if (state == NULL) {
kfree(client);
return -ENOMEM;
}
i2c_set_clientdata(client, state);
memset(state, 0, sizeof(*state));
state->v4l2_std = V4L2_STD_NTSC;
state->audmode = V4L2_TUNER_MODE_STEREO;
state->volume = 58880; /* 0db gain */
state->balance = 32768; /* 0db gain */
state->bass = 32768;
state->treble = 32768;
state->loudness = 0;
state->input = -1;
state->muted = 0;
state->i2s_mode = 0;
init_waitqueue_head(&state->wq);
/* These are the reset input/output positions */
state->routing.input = MSP_INPUT_DEFAULT;
state->routing.output = MSP_OUTPUT_DEFAULT;
state->rev1 = msp_read_dsp(client, 0x1e);
if (state->rev1 != -1)
state->rev2 = msp_read_dsp(client, 0x1f);
v4l_dbg(1, msp_debug, client, "rev1=0x%04x, rev2=0x%04x\n", state->rev1, state->rev2);
if (state->rev1 == -1 || (state->rev1 == 0 && state->rev2 == 0)) {
v4l_dbg(1, msp_debug, client, "not an msp3400 (cannot read chip version)\n");
kfree(state);
kfree(client);
return 0;
}
msp_set_audio(client);
msp_family = ((state->rev1 >> 4) & 0x0f) + 3;
msp_product = (state->rev2 >> 8) & 0xff;
msp_prod_hi = msp_product / 10;
msp_prod_lo = msp_product % 10;
msp_revision = (state->rev1 & 0x0f) + '@';
msp_hard = ((state->rev1 >> 8) & 0xff) + '@';
msp_rom = state->rev2 & 0x1f;
snprintf(client->name, sizeof(client->name), "MSP%d4%02d%c-%c%d",
msp_family, msp_product,
msp_revision, msp_hard, msp_rom);
/* Has NICAM support: all mspx41x and mspx45x products have NICAM */
state->has_nicam = msp_prod_hi == 1 || msp_prod_hi == 5;
/* Has radio support: was added with revision G */
state->has_radio = msp_revision >= 'G';
/* Has headphones output: not for stripped down products */
state->has_headphones = msp_prod_lo < 5;
/* Has scart2 input: not in stripped down products of the '3' family */
state->has_scart2 = msp_family >= 4 || msp_prod_lo < 7;
/* Has scart3 input: not in stripped down products of the '3' family */
state->has_scart3 = msp_family >= 4 || msp_prod_lo < 5;
/* Has scart4 input: not in pre D revisions, not in stripped D revs */
state->has_scart4 = msp_family >= 4 || (msp_revision >= 'D' && msp_prod_lo < 5);
/* Has scart2 output: not in stripped down products of the '3' family */
state->has_scart2_out = msp_family >= 4 || msp_prod_lo < 5;
/* Has scart2 a volume control? Not in pre-D revisions. */
state->has_scart2_out_volume = msp_revision > 'C' && state->has_scart2_out;
/* Has a configurable i2s out? */
state->has_i2s_conf = msp_revision >= 'G' && msp_prod_lo < 7;
/* Has subwoofer output: not in pre-D revs and not in stripped down products */
state->has_subwoofer = msp_revision >= 'D' && msp_prod_lo < 5;
/* Has soundprocessing (bass/treble/balance/loudness/equalizer): not in
stripped down products */
state->has_sound_processing = msp_prod_lo < 7;
/* Has Virtual Dolby Surround: only in msp34x1 */
state->has_virtual_dolby_surround = msp_revision == 'G' && msp_prod_lo == 1;
/* Has Virtual Dolby Surround & Dolby Pro Logic: only in msp34x2 */
state->has_dolby_pro_logic = msp_revision == 'G' && msp_prod_lo == 2;
/* The msp343xG supports BTSC only and cannot do Automatic Standard Detection. */
state->force_btsc = msp_family == 3 && msp_revision == 'G' && msp_prod_hi == 3;
state->opmode = opmode;
if (state->opmode == OPMODE_AUTO) {
/* MSP revision G and up have both autodetect and autoselect */
if (msp_revision >= 'G')
state->opmode = OPMODE_AUTOSELECT;
/* MSP revision D and up have autodetect */
else if (msp_revision >= 'D')
state->opmode = OPMODE_AUTODETECT;
else
state->opmode = OPMODE_MANUAL;
}
/* hello world :-) */
v4l_info(client, "%s found @ 0x%x (%s)\n", client->name, address << 1, adapter->name);
v4l_info(client, "%s ", client->name);
if (state->has_nicam && state->has_radio)
printk("supports nicam and radio, ");
else if (state->has_nicam)
printk("supports nicam, ");
else if (state->has_radio)
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 (IS_ERR(state->kthread))
v4l_warn(client, "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 = {
.id = I2C_DRIVERID_MSP3400,
.attach_adapter = msp_probe,
.detach_client = msp_detach,
.suspend = msp_suspend,
.resume = msp_resume,
.command = msp_command,
.driver = {
.name = "msp3400",
},
};
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:
*/
Reference in New Issue View Git Blame Copy Permalink