// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Programming the mspx4xx sound processor family
*
* (c) 1997-2001 Gerd Knorr <[email protected]>
*
* what works and what doesn't:
*
* AM-Mono
* Support for Hauppauge cards added (decoding handled by tuner) added by
* Frederic Crozat <[email protected]>
*
* FM-Mono
* should work. The stereo modes are backward compatible to FM-mono,
* therefore FM-Mono should be always 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 <[email protected]>
*
* TODO:
* - better SAT support
*
* 980623 Thomas Sailer ([email protected])
* using soundcore instead of OSS
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/drv-intf/msp3400.h>
#include <media/i2c/tvaudio.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 */
bool msp_once; /* no continuous stereo monitoring */
bool 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. */
bool 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 processing");
/* ---------------------------------------------------------------------- */
/* control subaddress */
#define I2C_MSP_CONTROL 0x00
/* demodulator unit subaddress */
#define I2C_MSP_DEM 0x10
/* DSP unit subaddress */
#define I2C_MSP_DSP 0x12
/* ----------------------------------------------------------------------- */
/* 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] = {
{
.addr = client->addr,
.flags = I2C_M_IGNORE_NAK,
.len = 3,
.buf = reset_off
},
{
.addr = client->addr,
.flags = I2C_M_IGNORE_NAK,
.len = 3,
.buf = reset_on
},
};
struct i2c_msg test[2] = {
{
.addr = client->addr,
.len = 3,
.buf = write
},
{
.addr = client->addr,
.flags = I2C_M_RD,
.len = 2,
.buf = read
},
};
dev_dbg_lvl(&client->dev, 3, msp_debug, "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) {
dev_err(&client->dev, "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] = {
{
.addr = client->addr,
.len = 3,
.buf = write
},
{
.addr = client->addr,
.flags = I2C_M_RD,
.len = 2,
.buf = 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;
dev_warn(&client->dev, "I/O error #%d (read 0x%02x/0x%02x)\n", err,
dev, addr);
schedule_timeout_interruptible(msecs_to_jiffies(10));
}
if (err == 3) {
dev_warn(&client->dev, "resetting chip, sound will go off.\n");
msp_reset(client);
return -1;
}
retval = read[0] << 8 | read[1];
dev_dbg_lvl(&client->dev, 3, msp_debug, "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;
dev_dbg_lvl(&client->dev, 3, msp_debug, "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;
dev_warn(&client->dev, "I/O error #%d (write 0x%02x/0x%02x)\n", err,
dev, addr);
schedule_timeout_interruptible(msecs_to_jiffies(10));
}
if (err == 3) {
dev_warn(&client->dev, "resetting chip, sound will go off.\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 = to_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 */
dev_dbg_lvl(&client->dev, 1, msp_debug, "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);
}
/* ------------------------------------------------------------------------ */
static void msp_wake_thread(struct i2c_client *client)
{
struct msp_state *state = to_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 msec)
{
long timeout;
timeout = msec < 0 ? MAX_SCHEDULE_TIMEOUT : msecs_to_jiffies(msec);
wait_event_freezable_timeout(state->wq, kthread_should_stop() ||
state->restart, timeout);
return state->restart;
}
/* ------------------------------------------------------------------------ */
static int msp_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct msp_state *state = ctrl_to_state(ctrl);
struct i2c_client *client = v4l2_get_subdevdata(&state->sd);
int val = ctrl->val;
switch (ctrl->id) {
case V4L2_CID_AUDIO_VOLUME: {
/* audio volume cluster */
int reallymuted = state->muted->val | state->scan_in_progress;
if (!reallymuted)
val = (val * 0x7f / 65535) << 8;
dev_dbg_lvl(&client->dev, 1, msp_debug, "mute=%s scanning=%s volume=%d\n",
state->muted->val ? "on" : "off",
state->scan_in_progress ? "yes" : "no",
state->volume->val);
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);
break;
}
case V4L2_CID_AUDIO_BASS:
val = ((val - 32768) * 0x60 / 65535) << 8;
msp_write_dsp(client, 0x0002, val);
if (state->has_headphones)
msp_write_dsp(client, 0x0031, val);
break;
case V4L2_CID_AUDIO_TREBLE:
val = ((val - 32768) * 0x60 / 65535) << 8;
msp_write_dsp(client, 0x0003, val);
if (state->has_headphones)
msp_write_dsp(client, 0x0032, val);
break;
case V4L2_CID_AUDIO_LOUDNESS:
val = val ? ((5 * 4) << 8) : 0;
msp_write_dsp(client, 0x0004, val);
if (state->has_headphones)
msp_write_dsp(client, 0x0033, val);
break;
case V4L2_CID_AUDIO_BALANCE:
val = (u8)((val / 256) - 128);
msp_write_dsp(client, 0x0001, val << 8);
if (state->has_headphones)
msp_write_dsp(client, 0x0030, val << 8);
break;
default:
return -EINVAL;
}
return 0;
}
void msp_update_volume(struct msp_state *state)
{
/* Force an update of the volume/mute cluster */
v4l2_ctrl_lock(state->volume);
state->volume->val = state->volume->cur.val;
state->muted->val = state->muted->cur.val;
msp_s_ctrl(state->volume);
v4l2_ctrl_unlock(state->volume);
}
/* --- v4l2 ioctls --- */
static int msp_s_radio(struct v4l2_subdev *sd)
{
struct msp_state *state = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
if (state->radio)
return 0;
state->radio = 1;
dev_dbg_lvl(&client->dev, 1, msp_debug, "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_update_volume(state);
break;
case OPMODE_AUTODETECT:
case OPMODE_AUTOSELECT:
/* the thread will do for us */
msp_wake_thread(client);
break;
}
return 0;
}
static int msp_s_frequency(struct v4l2_subdev *sd, const struct v4l2_frequency *freq)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
/* new channel -- kick audio carrier scan */
msp_wake_thread(client);
return 0;
}
static int msp_querystd(struct v4l2_subdev *sd, v4l2_std_id *id)
{
struct msp_state *state = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
*id &= state->detected_std;
dev_dbg_lvl(&client->dev, 2, msp_debug,
"detected standard: %s(0x%08Lx)\n",
msp_standard_std_name(state->std), state->detected_std);
return 0;
}
static int msp_s_std(struct v4l2_subdev *sd, v4l2_std_id id)
{
struct msp_state *state = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int update = state->radio || state->v4l2_std != id;
state->v4l2_std = id;
state->radio = 0;
if (update)
msp_wake_thread(client);
return 0;
}
static int msp_s_routing(struct v4l2_subdev *sd,
u32 input, u32 output, u32 config)
{
struct msp_state *state = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int tuner = (input >> 3) & 1;
int sc_in = input & 0x7;
int sc1_out = output & 0xf;
int sc2_out = (output >> 4) & 0xf;
u16 val, reg;
int i;
int extern_input = 1;
if (state->route_in == input && state->route_out == output)
return 0;
state->route_in = input;
state->route_out = output;
/* check if the tuner input is used */
for (i = 0; i < 5; i++) {
if (((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);
return 0;
}
static int msp_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt)
{
struct msp_state *state = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
if (vt->type != V4L2_TUNER_ANALOG_TV)
return 0;
if (!state->radio) {
if (state->opmode == OPMODE_AUTOSELECT)
msp_detect_stereo(client);
vt->rxsubchans = state->rxsubchans;
}
vt->audmode = state->audmode;
vt->capability |= V4L2_TUNER_CAP_STEREO |
V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
return 0;
}
static int msp_s_tuner(struct v4l2_subdev *sd, const struct v4l2_tuner *vt)
{
struct msp_state *state = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
if (state->radio) /* TODO: add mono/stereo support for radio */
return 0;
if (state->audmode == vt->audmode)
return 0;
state->audmode = vt->audmode;
/* only set audmode */
msp_set_audmode(client);
return 0;
}
static int msp_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq)
{
struct msp_state *state = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
dev_dbg_lvl(&client->dev, 1, msp_debug, "Setting I2S speed to %d\n", freq);
switch (freq) {
case 1024000:
state->i2s_mode = 0;
break;
case 2048000:
state->i2s_mode = 1;
break;
default:
return -EINVAL;
}
return 0;
}
static int msp_log_status(struct v4l2_subdev *sd)
{
struct msp_state *state = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
const char *p;
char prefix[sizeof(sd->name) + 20];
if (state->opmode == OPMODE_AUTOSELECT)
msp_detect_stereo(client);
dev_info(&client->dev, "%s rev1 = 0x%04x rev2 = 0x%04x\n",
client->name, state->rev1, state->rev2);
snprintf(prefix, sizeof(prefix), "%s: Audio: ", sd->name);
v4l2_ctrl_handler_log_status(&state->hdl, prefix);
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 = "Terrestrial FM-mono/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) {
dev_info(&client->dev, "Mode: %s\n", p);
} else if (state->opmode == OPMODE_MANUAL) {
dev_info(&client->dev, "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)
dev_info(&client->dev, "Mode: %s\n", p);
dev_info(&client->dev, "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" : "");
}
dev_info(&client->dev, "Audmode: 0x%04x\n", state->audmode);
dev_info(&client->dev, "Routing: 0x%08x (input) 0x%08x (output)\n",
state->route_in, state->route_out);
dev_info(&client->dev, "ACB: 0x%04x\n", state->acb);
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int msp_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
dev_dbg_lvl(&client->dev, 1, msp_debug, "suspend\n");
msp_reset(client);
return 0;
}
static int msp_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
dev_dbg_lvl(&client->dev, 1, msp_debug, "resume\n");
msp_wake_thread(client);
return 0;
}
#endif
/* ----------------------------------------------------------------------- */
static const struct v4l2_ctrl_ops msp_ctrl_ops = {
.s_ctrl = msp_s_ctrl,
};
static const struct v4l2_subdev_core_ops msp_core_ops = {
.log_status = msp_log_status,
};
static const struct v4l2_subdev_video_ops msp_video_ops = {
.s_std = msp_s_std,
.querystd = msp_querystd,
};
static const struct v4l2_subdev_tuner_ops msp_tuner_ops = {
.s_frequency = msp_s_frequency,
.g_tuner = msp_g_tuner,
.s_tuner = msp_s_tuner,
.s_radio = msp_s_radio,
};
static const struct v4l2_subdev_audio_ops msp_audio_ops = {
.s_routing = msp_s_routing,
.s_i2s_clock_freq = msp_s_i2s_clock_freq,
};
static const struct v4l2_subdev_ops msp_ops = {
.core = &msp_core_ops,
.video = &msp_video_ops,
.tuner = &msp_tuner_ops,
.audio = &msp_audio_ops,
};
/* ----------------------------------------------------------------------- */
static const char * const opmode_str[] = {
[OPMODE_MANUAL] = "manual",
[OPMODE_AUTODETECT] = "autodetect",
[OPMODE_AUTOSELECT] = "autodetect and autoselect",
};
static int msp_probe(struct i2c_client *client)
{
const struct i2c_device_id *id = i2c_client_get_device_id(client);
struct msp_state *state;
struct v4l2_subdev *sd;
struct v4l2_ctrl_handler *hdl;
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;
#if defined(CONFIG_MEDIA_CONTROLLER)
int ret;
#endif
if (!id)
strscpy(client->name, "msp3400", sizeof(client->name));
if (msp_reset(client) == -1) {
dev_dbg_lvl(&client->dev, 1, msp_debug, "msp3400 not found\n");
return -ENODEV;
}
state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
if (!state)
return -ENOMEM;
sd = &state->sd;
v4l2_i2c_subdev_init(sd, client, &msp_ops);
#if defined(CONFIG_MEDIA_CONTROLLER)
state->pads[MSP3400_PAD_IF_INPUT].flags = MEDIA_PAD_FL_SINK;
state->pads[MSP3400_PAD_IF_INPUT].sig_type = PAD_SIGNAL_AUDIO;
state->pads[MSP3400_PAD_OUT].flags = MEDIA_PAD_FL_SOURCE;
state->pads[MSP3400_PAD_OUT].sig_type = PAD_SIGNAL_AUDIO;
sd->entity.function = MEDIA_ENT_F_IF_AUD_DECODER;
ret = media_entity_pads_init(&sd->entity, 2, state->pads);
if (ret < 0)
return ret;
#endif
state->v4l2_std = V4L2_STD_NTSC;
state->detected_std = V4L2_STD_ALL;
state->audmode = V4L2_TUNER_MODE_STEREO;
state->input = -1;
state->i2s_mode = 0;
init_waitqueue_head(&state->wq);
/* These are the reset input/output positions */
state->route_in = MSP_INPUT_DEFAULT;
state->route_out = MSP_OUTPUT_DEFAULT;
state->rev1 = msp_read_dsp(client, 0x1e);
if (state->rev1 != -1)
state->rev2 = msp_read_dsp(client, 0x1f);
dev_dbg_lvl(&client->dev, 1, msp_debug, "rev1=0x%04x, rev2=0x%04x\n",
state->rev1, state->rev2);
if (state->rev1 == -1 || (state->rev1 == 0 && state->rev2 == 0)) {
dev_dbg_lvl(&client->dev, 1, msp_debug,
"not an msp3400 (cannot read chip version)\n");
return -ENODEV;
}
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;
/* Rev B=2, C=3, D=4, G=7 */
state->ident = msp_family * 10000 + 4000 + msp_product * 10 +
msp_revision - '@';
/* 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_MANUAL
|| state->opmode > OPMODE_AUTOSELECT) {
/* 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;
}
hdl = &state->hdl;
v4l2_ctrl_handler_init(hdl, 6);
if (state->has_sound_processing) {
v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
V4L2_CID_AUDIO_BASS, 0, 65535, 65535 / 100, 32768);
v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
V4L2_CID_AUDIO_TREBLE, 0, 65535, 65535 / 100, 32768);
v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
V4L2_CID_AUDIO_LOUDNESS, 0, 1, 1, 0);
}
state->volume = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
V4L2_CID_AUDIO_VOLUME, 0, 65535, 65535 / 100, 58880);
v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
V4L2_CID_AUDIO_BALANCE, 0, 65535, 65535 / 100, 32768);
state->muted = v4l2_ctrl_new_std(hdl, &msp_ctrl_ops,
V4L2_CID_AUDIO_MUTE, 0, 1, 1, 0);
sd->ctrl_handler = hdl;
if (hdl->error) {
int err = hdl->error;
v4l2_ctrl_handler_free(hdl);
return err;
}
v4l2_ctrl_cluster(2, &state->volume);
v4l2_ctrl_handler_setup(hdl);
dev_info(&client->dev,
"MSP%d4%02d%c-%c%d found on %s: supports %s%s%s, mode is %s\n",
msp_family, msp_product,
msp_revision, msp_hard, msp_rom,
client->adapter->name,
(state->has_nicam) ? "nicam" : "",
(state->has_nicam && state->has_radio) ? " and " : "",
(state->has_radio) ? "radio" : "",
opmode_str[state->opmode]);
/* version-specific initialization */
switch (state->opmode) {
case OPMODE_MANUAL:
thread_func = msp3400c_thread;
break;
case OPMODE_AUTODETECT:
thread_func = msp3410d_thread;
break;
case OPMODE_AUTOSELECT:
thread_func = msp34xxg_thread;
break;
}
/* startup control thread if needed */
if (thread_func) {
state->kthread = kthread_run(thread_func, client, "msp34xx");
if (IS_ERR(state->kthread))
dev_warn(&client->dev, "kernel_thread() failed\n");
msp_wake_thread(client);
}
return 0;
}
static void msp_remove(struct i2c_client *client)
{
struct msp_state *state = to_state(i2c_get_clientdata(client));
v4l2_device_unregister_subdev(&state->sd);
/* shutdown control thread */
if (state->kthread) {
state->restart = 1;
kthread_stop(state->kthread);
}
msp_reset(client);
v4l2_ctrl_handler_free(&state->hdl);
}
/* ----------------------------------------------------------------------- */
static const struct dev_pm_ops msp3400_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(msp_suspend, msp_resume)
};
static const struct i2c_device_id msp_id[] = {
{ "msp3400" },
{ }
};
MODULE_DEVICE_TABLE(i2c, msp_id);
static struct i2c_driver msp_driver = {
.driver = {
.name = "msp3400",
.pm = &msp3400_pm_ops,
},
.probe = msp_probe,
.remove = msp_remove,
.id_table = msp_id,
};
module_i2c_driver(msp_driver);
Codebase Browser
linux