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linux/drivers/media/i2c/msp3400-driver.c
Thomas Gleixner c942fddf87 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
Based on 3 normalized pattern(s):

  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

  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 [author] [kishon] [vijay] [abraham]
  [i] [kishon]@[ti] [com] 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

  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 [author] [graeme] [gregory]
  [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
  [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
  [hk] [hemahk]@[ti] [com] 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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1105 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:37 -07:00

901 lines
26 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* 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 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 <pp@netppl.fi>
*
* TODO:
* - better SAT support
*
* 980623 Thomas Sailer (sailer@ife.ee.ethz.ch)
* 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 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;
}
/* ------------------------------------------------------------------------ */
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[V4L2_SUBDEV_NAME_SIZE + 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)
{
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 int 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);
return 0;
}
/* ----------------------------------------------------------------------- */
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", 0 },
{ }
};
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);