linux/sound/soc/codecs/wm8731.c
Linus Torvalds 0280d1a099 sound updates for 4.4-rc1
Here is the first batch of updates for sound system on 4.4-rc1.
 Again at this time, the update looks fairly calm; no big changes in
 either ALSA core or ASoC infrastructures, rather all small cleanups,
 in addition to the new stuff as usual.
 
 The biggest changes are about Firewire sound devices.  It gained lots
 of new device support, and MIDI functionality.  Also there are updates
 for a few still working-in-progress stuff (topology API and ASoC
 skylake), too.  But overall, this update should give no big surprise.
 
 Some highlight is below:
 
 Core:
  - A few more Kconfig items for tinification; it's marked as EXPERT,
    so normal user should't be bothered :)
  - Refactoring with a new PCM hw_constraint helper
  - Removal of unused transfer_ack_{begin,end} PCM callbacks
 
 Firewire:
  - Restructuring of code subtree, lots of refactoring
  - Support AMDTP variants
  - New driver for Digidesign 002/003 family
  - Adds support for TASCAM FireOne to ALSA OXFW driver
  - Add MIDI support to TASCAM and Digi00x devices
 
 HD-Audio:
  - Automated modalias generation for codec drivers, finally
  - Improvement on heuristics for setting mixer name
  - A few fixes for longstanding bugs on Creative CA0132 cards
  - Addition of audio rate callback with i915 communication
  - Fix suspend issue on recent Dell XPS
  - Intel Lewisburg controller support
 
 ASoC:
  - Updates to the topology userspace interface
  - Big updates to the Renesas support (rcar)
  - More updates for supporting Intel Sky Lake systems
  - New drivers for Asahi Kasei Microdevices AK4613, Allwinnner A10,
    Cirrus Logic WM8998, Dialog DA7219, Nuvoton NAU8825, Rockchip
    S/PDIF, and Atmel class D amplifier
 
 USB-Audio:
  - A fix for newer Roland MIDI devices
  - Quirks and workarounds for Zoom R16/24 device
 
 Misc:
  - A few fixes for some old Cirrus CS46xx PCI sound boards
  - Yet another fixes for some old ESS Maestro3 PCI sound boards
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABCAAGBQJWPNI9AAoJEGwxgFQ9KSmkOGIP+wUX4eIWwV4BK3mTjdPgvB+i
 M7niITY+baN6WqoX8Impe6CyvdOed/pQyHqkT8NFthhmYrgVU9iJBykgF1+BOPt3
 ZtYb0qi2mOPbTL0mwFv6oDu8Nvh6hBdCz6ZepQQdjyG4QBdLs7Cea3o3ncJEgsqI
 H9LHcCjwSIi4wAcIFVCiD2rJnI/sqhyH2jm9ay8TWDPkBnUBC0Pz1aE+DIbb5x5G
 m53rVTjE2dU5MQJrG+rQyH5ngR51Qs6XLYLSnkMXBrZPSP5UQxM282pG19ILumFK
 b5uOKWC2DyeWkmDTglAQXaSSbI+3Sj+W+oo05z51Pz2b8YEvehl2XjJpeB0Nlez/
 q+i/c8LnUYV8MPlJdldC1jZO8MVRYEX5fEWm1Hwie+q1YozFkhxIfwKCdXnazpYE
 ga9E5t/Utg0Rclb2vlYuHv3A4RmY1CW7VazP6PwZjhrahPMxN6zU8aTe+OzBJxkT
 i8Ka+R7mMCVyAfauNuBcQtJ+cY+6JbOXsT/5BWTGW0qsa9V17uUOXriAYyNBLwFL
 zcBa8OXHtYoiPbWIgE5rJUmRqTXJaOlNYyuot+AT2K7bOW9KMXmEROaSXyVNoqR8
 AVZHVmByViI8TuQ98L7vakvyHSKoi4x1Aq/ODrS4Ya4+5T60PmVTyCxT7UUE0FNo
 V39cwMFp8TCMifTeRP/+
 =l9SO
 -----END PGP SIGNATURE-----

Merge tag 'sound-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound updates from Takashi Iwai:
 "Here is the first batch of updates for sound system on 4.4-rc1.

  Again at this time, the update looks fairly calm; no big changes in
  either ALSA core or ASoC infrastructures, rather all small cleanups,
  in addition to the new stuff as usual.

  The biggest changes are about Firewire sound devices.  It gained lots
  of new device support, and MIDI functionality.  Also there are updates
  for a few still working-in-progress stuff (topology API and ASoC
  skylake), too.  But overall, this update should give no big surprise.

  Some highlights are below:

  Core:
   - A few more Kconfig items for tinification; it's marked as EXPERT,
     so normal user should't be bothered :)
   - Refactoring with a new PCM hw_constraint helper
   - Removal of unused transfer_ack_{begin,end} PCM callbacks

  Firewire:
   - Restructuring of code subtree, lots of refactoring
   - Support AMDTP variants
   - New driver for Digidesign 002/003 family
   - Adds support for TASCAM FireOne to ALSA OXFW driver
   - Add MIDI support to TASCAM and Digi00x devices

  HD-Audio:
   - Automated modalias generation for codec drivers, finally
   - Improvement on heuristics for setting mixer name
   - A few fixes for longstanding bugs on Creative CA0132 cards
   - Addition of audio rate callback with i915 communication
   - Fix suspend issue on recent Dell XPS
   - Intel Lewisburg controller support

  ASoC:
   - Updates to the topology userspace interface
   - Big updates to the Renesas support (rcar)
   - More updates for supporting Intel Sky Lake systems
   - New drivers for Asahi Kasei Microdevices AK4613, Allwinnner A10,
     Cirrus Logic WM8998, Dialog DA7219, Nuvoton NAU8825, Rockchip
     S/PDIF, and Atmel class D amplifier

  USB-Audio:
   - A fix for newer Roland MIDI devices
   - Quirks and workarounds for Zoom R16/24 device

  Misc:
   - A few fixes for some old Cirrus CS46xx PCI sound boards
   - Yet another fixes for some old ESS Maestro3 PCI sound boards"

* tag 'sound-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (330 commits)
  ALSA: hda - Add Intel Lewisburg device IDs Audio
  ALSA: hda - Apply pin fixup for HP ProBook 6550b
  ALSA: hda - Fix lost 4k BDL boundary workaround
  ALSA: maestro3: Fix Allegro mute until master volume/mute is touched
  ALSA: maestro3: Enable docking support for Dell Latitude C810
  ALSA: firewire-digi00x: add another rawmidi character device for MIDI control ports
  ALSA: firewire-digi00x: add MIDI operations for MIDI control port
  ALSA: firewire-digi00x: rename identifiers of MIDI operation for physical ports
  ALSA: cs46xx: Fix suspend for all channels
  ALSA: cs46xx: Fix Duplicate front for CS4294 and CS4298 codecs
  ALSA: DocBook: Add soc-ops.c and soc-compress.c
  ALSA: hda - Add / fix kernel doc comments
  ALSA: Constify ratden/ratnum constraints
  ALSA: hda - Disable 64bit address for Creative HDA controllers
  ALSA: hda/realtek - Dell XPS one ALC3260 speaker no sound after resume back
  ALSA: hda/ca0132 - Convert leftover pr_info() and pr_err()
  ASoC: fsl: Use #ifdef instead of #if for CONFIG_PM_SLEEP
  ASoC: rt5645: Sort the order for register bit defines
  ASoC: dwc: add check for master/slave format
  ASoC: rt5645: Add the HWEQ for the speaker output
  ...
2015-11-06 11:04:07 -08:00

841 lines
20 KiB
C

/*
* wm8731.c -- WM8731 ALSA SoC Audio driver
*
* Copyright 2005 Openedhand Ltd.
* Copyright 2006-12 Wolfson Microelectronics, plc
*
* Author: Richard Purdie <richard@openedhand.com>
*
* Based on wm8753.c by Liam Girdwood
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/spi/spi.h>
#include <linux/of_device.h>
#include <linux/mutex.h>
#include <linux/clk.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include "wm8731.h"
#define WM8731_NUM_SUPPLIES 4
static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = {
"AVDD",
"HPVDD",
"DCVDD",
"DBVDD",
};
/* codec private data */
struct wm8731_priv {
struct regmap *regmap;
struct clk *mclk;
struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES];
const struct snd_pcm_hw_constraint_list *constraints;
unsigned int sysclk;
int sysclk_type;
int playback_fs;
bool deemph;
struct mutex lock;
};
/*
* wm8731 register cache
*/
static const struct reg_default wm8731_reg_defaults[] = {
{ 0, 0x0097 },
{ 1, 0x0097 },
{ 2, 0x0079 },
{ 3, 0x0079 },
{ 4, 0x000a },
{ 5, 0x0008 },
{ 6, 0x009f },
{ 7, 0x000a },
{ 8, 0x0000 },
{ 9, 0x0000 },
};
static bool wm8731_volatile(struct device *dev, unsigned int reg)
{
return reg == WM8731_RESET;
}
#define wm8731_reset(m) regmap_write(m, WM8731_RESET, 0)
static const char *wm8731_input_select[] = {"Line In", "Mic"};
static SOC_ENUM_SINGLE_DECL(wm8731_insel_enum,
WM8731_APANA, 2, wm8731_input_select);
static int wm8731_deemph[] = { 0, 32000, 44100, 48000 };
static int wm8731_set_deemph(struct snd_soc_codec *codec)
{
struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
int val, i, best;
/* If we're using deemphasis select the nearest available sample
* rate.
*/
if (wm8731->deemph) {
best = 1;
for (i = 2; i < ARRAY_SIZE(wm8731_deemph); i++) {
if (abs(wm8731_deemph[i] - wm8731->playback_fs) <
abs(wm8731_deemph[best] - wm8731->playback_fs))
best = i;
}
val = best << 1;
} else {
best = 0;
val = 0;
}
dev_dbg(codec->dev, "Set deemphasis %d (%dHz)\n",
best, wm8731_deemph[best]);
return snd_soc_update_bits(codec, WM8731_APDIGI, 0x6, val);
}
static int wm8731_get_deemph(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
ucontrol->value.integer.value[0] = wm8731->deemph;
return 0;
}
static int wm8731_put_deemph(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
unsigned int deemph = ucontrol->value.integer.value[0];
int ret = 0;
if (deemph > 1)
return -EINVAL;
mutex_lock(&wm8731->lock);
if (wm8731->deemph != deemph) {
wm8731->deemph = deemph;
wm8731_set_deemph(codec);
ret = 1;
}
mutex_unlock(&wm8731->lock);
return ret;
}
static const DECLARE_TLV_DB_SCALE(in_tlv, -3450, 150, 0);
static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -1500, 300, 0);
static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 2000, 0);
static const struct snd_kcontrol_new wm8731_snd_controls[] = {
SOC_DOUBLE_R_TLV("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V,
0, 127, 0, out_tlv),
SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V,
7, 1, 0),
SOC_DOUBLE_R_TLV("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0,
in_tlv),
SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1),
SOC_SINGLE_TLV("Mic Boost Volume", WM8731_APANA, 0, 1, 0, mic_tlv),
SOC_SINGLE("Mic Capture Switch", WM8731_APANA, 1, 1, 1),
SOC_SINGLE_TLV("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1,
sidetone_tlv),
SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1),
SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0),
SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0,
wm8731_get_deemph, wm8731_put_deemph),
};
/* Output Mixer */
static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = {
SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0),
SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0),
SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0),
};
/* Input mux */
static const struct snd_kcontrol_new wm8731_input_mux_controls =
SOC_DAPM_ENUM("Input Select", wm8731_insel_enum);
static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
SND_SOC_DAPM_SUPPLY("ACTIVE",WM8731_ACTIVE, 0, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("OSC", WM8731_PWR, 5, 1, NULL, 0),
SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1,
&wm8731_output_mixer_controls[0],
ARRAY_SIZE(wm8731_output_mixer_controls)),
SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1),
SND_SOC_DAPM_OUTPUT("LOUT"),
SND_SOC_DAPM_OUTPUT("LHPOUT"),
SND_SOC_DAPM_OUTPUT("ROUT"),
SND_SOC_DAPM_OUTPUT("RHPOUT"),
SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1),
SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls),
SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0),
SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1),
SND_SOC_DAPM_INPUT("MICIN"),
SND_SOC_DAPM_INPUT("RLINEIN"),
SND_SOC_DAPM_INPUT("LLINEIN"),
};
static int wm8731_check_osc(struct snd_soc_dapm_widget *source,
struct snd_soc_dapm_widget *sink)
{
struct snd_soc_codec *codec = snd_soc_dapm_to_codec(source->dapm);
struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
return wm8731->sysclk_type == WM8731_SYSCLK_XTAL;
}
static const struct snd_soc_dapm_route wm8731_intercon[] = {
{"DAC", NULL, "OSC", wm8731_check_osc},
{"ADC", NULL, "OSC", wm8731_check_osc},
{"DAC", NULL, "ACTIVE"},
{"ADC", NULL, "ACTIVE"},
/* output mixer */
{"Output Mixer", "Line Bypass Switch", "Line Input"},
{"Output Mixer", "HiFi Playback Switch", "DAC"},
{"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
/* outputs */
{"RHPOUT", NULL, "Output Mixer"},
{"ROUT", NULL, "Output Mixer"},
{"LHPOUT", NULL, "Output Mixer"},
{"LOUT", NULL, "Output Mixer"},
/* input mux */
{"Input Mux", "Line In", "Line Input"},
{"Input Mux", "Mic", "Mic Bias"},
{"ADC", NULL, "Input Mux"},
/* inputs */
{"Line Input", NULL, "LLINEIN"},
{"Line Input", NULL, "RLINEIN"},
{"Mic Bias", NULL, "MICIN"},
};
struct _coeff_div {
u32 mclk;
u32 rate;
u16 fs;
u8 sr:4;
u8 bosr:1;
u8 usb:1;
};
/* codec mclk clock divider coefficients */
static const struct _coeff_div coeff_div[] = {
/* 48k */
{12288000, 48000, 256, 0x0, 0x0, 0x0},
{18432000, 48000, 384, 0x0, 0x1, 0x0},
{12000000, 48000, 250, 0x0, 0x0, 0x1},
/* 32k */
{12288000, 32000, 384, 0x6, 0x0, 0x0},
{18432000, 32000, 576, 0x6, 0x1, 0x0},
{12000000, 32000, 375, 0x6, 0x0, 0x1},
/* 8k */
{12288000, 8000, 1536, 0x3, 0x0, 0x0},
{18432000, 8000, 2304, 0x3, 0x1, 0x0},
{11289600, 8000, 1408, 0xb, 0x0, 0x0},
{16934400, 8000, 2112, 0xb, 0x1, 0x0},
{12000000, 8000, 1500, 0x3, 0x0, 0x1},
/* 96k */
{12288000, 96000, 128, 0x7, 0x0, 0x0},
{18432000, 96000, 192, 0x7, 0x1, 0x0},
{12000000, 96000, 125, 0x7, 0x0, 0x1},
/* 44.1k */
{11289600, 44100, 256, 0x8, 0x0, 0x0},
{16934400, 44100, 384, 0x8, 0x1, 0x0},
{12000000, 44100, 272, 0x8, 0x1, 0x1},
/* 88.2k */
{11289600, 88200, 128, 0xf, 0x0, 0x0},
{16934400, 88200, 192, 0xf, 0x1, 0x0},
{12000000, 88200, 136, 0xf, 0x1, 0x1},
};
/* rates constraints */
static const unsigned int wm8731_rates_12000000[] = {
8000, 32000, 44100, 48000, 96000, 88200,
};
static const unsigned int wm8731_rates_12288000_18432000[] = {
8000, 32000, 48000, 96000,
};
static const unsigned int wm8731_rates_11289600_16934400[] = {
8000, 44100, 88200,
};
static const struct snd_pcm_hw_constraint_list wm8731_constraints_12000000 = {
.list = wm8731_rates_12000000,
.count = ARRAY_SIZE(wm8731_rates_12000000),
};
static const
struct snd_pcm_hw_constraint_list wm8731_constraints_12288000_18432000 = {
.list = wm8731_rates_12288000_18432000,
.count = ARRAY_SIZE(wm8731_rates_12288000_18432000),
};
static const
struct snd_pcm_hw_constraint_list wm8731_constraints_11289600_16934400 = {
.list = wm8731_rates_11289600_16934400,
.count = ARRAY_SIZE(wm8731_rates_11289600_16934400),
};
static inline int get_coeff(int mclk, int rate)
{
int i;
for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
return i;
}
return 0;
}
static int wm8731_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
u16 iface = snd_soc_read(codec, WM8731_IFACE) & 0xfff3;
int i = get_coeff(wm8731->sysclk, params_rate(params));
u16 srate = (coeff_div[i].sr << 2) |
(coeff_div[i].bosr << 1) | coeff_div[i].usb;
wm8731->playback_fs = params_rate(params);
snd_soc_write(codec, WM8731_SRATE, srate);
/* bit size */
switch (params_width(params)) {
case 16:
break;
case 20:
iface |= 0x0004;
break;
case 24:
iface |= 0x0008;
break;
}
wm8731_set_deemph(codec);
snd_soc_write(codec, WM8731_IFACE, iface);
return 0;
}
static int wm8731_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
u16 mute_reg = snd_soc_read(codec, WM8731_APDIGI) & 0xfff7;
if (mute)
snd_soc_write(codec, WM8731_APDIGI, mute_reg | 0x8);
else
snd_soc_write(codec, WM8731_APDIGI, mute_reg);
return 0;
}
static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec = codec_dai->codec;
struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
switch (clk_id) {
case WM8731_SYSCLK_XTAL:
case WM8731_SYSCLK_MCLK:
if (wm8731->mclk && clk_set_rate(wm8731->mclk, freq))
return -EINVAL;
wm8731->sysclk_type = clk_id;
break;
default:
return -EINVAL;
}
switch (freq) {
case 0:
wm8731->constraints = NULL;
break;
case 12000000:
wm8731->constraints = &wm8731_constraints_12000000;
break;
case 12288000:
case 18432000:
wm8731->constraints = &wm8731_constraints_12288000_18432000;
break;
case 16934400:
case 11289600:
wm8731->constraints = &wm8731_constraints_11289600_16934400;
break;
default:
return -EINVAL;
}
wm8731->sysclk = freq;
snd_soc_dapm_sync(dapm);
return 0;
}
static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
u16 iface = 0;
/* set master/slave audio interface */
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
iface |= 0x0040;
break;
case SND_SOC_DAIFMT_CBS_CFS:
break;
default:
return -EINVAL;
}
/* interface format */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
iface |= 0x0002;
break;
case SND_SOC_DAIFMT_RIGHT_J:
break;
case SND_SOC_DAIFMT_LEFT_J:
iface |= 0x0001;
break;
case SND_SOC_DAIFMT_DSP_A:
iface |= 0x0013;
break;
case SND_SOC_DAIFMT_DSP_B:
iface |= 0x0003;
break;
default:
return -EINVAL;
}
/* clock inversion */
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_IF:
iface |= 0x0090;
break;
case SND_SOC_DAIFMT_IB_NF:
iface |= 0x0080;
break;
case SND_SOC_DAIFMT_NB_IF:
iface |= 0x0010;
break;
default:
return -EINVAL;
}
/* set iface */
snd_soc_write(codec, WM8731_IFACE, iface);
return 0;
}
static int wm8731_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(codec);
int ret;
u16 reg;
switch (level) {
case SND_SOC_BIAS_ON:
if (wm8731->mclk) {
ret = clk_prepare_enable(wm8731->mclk);
if (ret)
return ret;
}
break;
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
wm8731->supplies);
if (ret != 0)
return ret;
regcache_sync(wm8731->regmap);
}
/* Clear PWROFF, gate CLKOUT, everything else as-is */
reg = snd_soc_read(codec, WM8731_PWR) & 0xff7f;
snd_soc_write(codec, WM8731_PWR, reg | 0x0040);
break;
case SND_SOC_BIAS_OFF:
if (wm8731->mclk)
clk_disable_unprepare(wm8731->mclk);
snd_soc_write(codec, WM8731_PWR, 0xffff);
regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies),
wm8731->supplies);
regcache_mark_dirty(wm8731->regmap);
break;
}
return 0;
}
static int wm8731_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct wm8731_priv *wm8731 = snd_soc_codec_get_drvdata(dai->codec);
if (wm8731->constraints)
snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
wm8731->constraints);
return 0;
}
#define WM8731_RATES SNDRV_PCM_RATE_8000_96000
#define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE)
static const struct snd_soc_dai_ops wm8731_dai_ops = {
.startup = wm8731_startup,
.hw_params = wm8731_hw_params,
.digital_mute = wm8731_mute,
.set_sysclk = wm8731_set_dai_sysclk,
.set_fmt = wm8731_set_dai_fmt,
};
static struct snd_soc_dai_driver wm8731_dai = {
.name = "wm8731-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = WM8731_RATES,
.formats = WM8731_FORMATS,},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = WM8731_RATES,
.formats = WM8731_FORMATS,},
.ops = &wm8731_dai_ops,
.symmetric_rates = 1,
};
static int wm8731_request_supplies(struct device *dev,
struct wm8731_priv *wm8731)
{
int ret = 0, i;
for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++)
wm8731->supplies[i].supply = wm8731_supply_names[i];
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(wm8731->supplies),
wm8731->supplies);
if (ret != 0) {
dev_err(dev, "Failed to request supplies: %d\n", ret);
return ret;
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
wm8731->supplies);
if (ret != 0) {
dev_err(dev, "Failed to enable supplies: %d\n", ret);
return ret;
}
return 0;
}
static int wm8731_hw_init(struct device *dev, struct wm8731_priv *wm8731)
{
int ret = 0;
ret = wm8731_reset(wm8731->regmap);
if (ret < 0) {
dev_err(dev, "Failed to issue reset: %d\n", ret);
goto err_regulator_enable;
}
/* Clear POWEROFF, keep everything else disabled */
regmap_write(wm8731->regmap, WM8731_PWR, 0x7f);
/* Latch the update bits */
regmap_update_bits(wm8731->regmap, WM8731_LOUT1V, 0x100, 0);
regmap_update_bits(wm8731->regmap, WM8731_ROUT1V, 0x100, 0);
regmap_update_bits(wm8731->regmap, WM8731_LINVOL, 0x100, 0);
regmap_update_bits(wm8731->regmap, WM8731_RINVOL, 0x100, 0);
/* Disable bypass path by default */
regmap_update_bits(wm8731->regmap, WM8731_APANA, 0x8, 0);
regcache_mark_dirty(wm8731->regmap);
err_regulator_enable:
/* Regulators will be enabled by bias management */
regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
return ret;
}
static struct snd_soc_codec_driver soc_codec_dev_wm8731 = {
.set_bias_level = wm8731_set_bias_level,
.suspend_bias_off = true,
.dapm_widgets = wm8731_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
.dapm_routes = wm8731_intercon,
.num_dapm_routes = ARRAY_SIZE(wm8731_intercon),
.controls = wm8731_snd_controls,
.num_controls = ARRAY_SIZE(wm8731_snd_controls),
};
static const struct of_device_id wm8731_of_match[] = {
{ .compatible = "wlf,wm8731", },
{ }
};
MODULE_DEVICE_TABLE(of, wm8731_of_match);
static const struct regmap_config wm8731_regmap = {
.reg_bits = 7,
.val_bits = 9,
.max_register = WM8731_RESET,
.volatile_reg = wm8731_volatile,
.cache_type = REGCACHE_RBTREE,
.reg_defaults = wm8731_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(wm8731_reg_defaults),
};
#if defined(CONFIG_SPI_MASTER)
static int wm8731_spi_probe(struct spi_device *spi)
{
struct wm8731_priv *wm8731;
int ret;
wm8731 = devm_kzalloc(&spi->dev, sizeof(*wm8731), GFP_KERNEL);
if (wm8731 == NULL)
return -ENOMEM;
wm8731->mclk = devm_clk_get(&spi->dev, "mclk");
if (IS_ERR(wm8731->mclk)) {
ret = PTR_ERR(wm8731->mclk);
if (ret == -ENOENT) {
wm8731->mclk = NULL;
dev_warn(&spi->dev, "Assuming static MCLK\n");
} else {
dev_err(&spi->dev, "Failed to get MCLK: %d\n",
ret);
return ret;
}
}
mutex_init(&wm8731->lock);
spi_set_drvdata(spi, wm8731);
ret = wm8731_request_supplies(&spi->dev, wm8731);
if (ret != 0)
return ret;
wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap);
if (IS_ERR(wm8731->regmap)) {
ret = PTR_ERR(wm8731->regmap);
dev_err(&spi->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
ret = wm8731_hw_init(&spi->dev, wm8731);
if (ret != 0)
return ret;
ret = snd_soc_register_codec(&spi->dev,
&soc_codec_dev_wm8731, &wm8731_dai, 1);
if (ret != 0) {
dev_err(&spi->dev, "Failed to register CODEC: %d\n", ret);
return ret;
}
return 0;
}
static int wm8731_spi_remove(struct spi_device *spi)
{
snd_soc_unregister_codec(&spi->dev);
return 0;
}
static struct spi_driver wm8731_spi_driver = {
.driver = {
.name = "wm8731",
.of_match_table = wm8731_of_match,
},
.probe = wm8731_spi_probe,
.remove = wm8731_spi_remove,
};
#endif /* CONFIG_SPI_MASTER */
#if IS_ENABLED(CONFIG_I2C)
static int wm8731_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8731_priv *wm8731;
int ret;
wm8731 = devm_kzalloc(&i2c->dev, sizeof(struct wm8731_priv),
GFP_KERNEL);
if (wm8731 == NULL)
return -ENOMEM;
wm8731->mclk = devm_clk_get(&i2c->dev, "mclk");
if (IS_ERR(wm8731->mclk)) {
ret = PTR_ERR(wm8731->mclk);
if (ret == -ENOENT) {
wm8731->mclk = NULL;
dev_warn(&i2c->dev, "Assuming static MCLK\n");
} else {
dev_err(&i2c->dev, "Failed to get MCLK: %d\n",
ret);
return ret;
}
}
mutex_init(&wm8731->lock);
i2c_set_clientdata(i2c, wm8731);
ret = wm8731_request_supplies(&i2c->dev, wm8731);
if (ret != 0)
return ret;
wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap);
if (IS_ERR(wm8731->regmap)) {
ret = PTR_ERR(wm8731->regmap);
dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
ret);
return ret;
}
ret = wm8731_hw_init(&i2c->dev, wm8731);
if (ret != 0)
return ret;
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8731, &wm8731_dai, 1);
if (ret != 0) {
dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
return ret;
}
return 0;
}
static int wm8731_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
return 0;
}
static const struct i2c_device_id wm8731_i2c_id[] = {
{ "wm8731", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id);
static struct i2c_driver wm8731_i2c_driver = {
.driver = {
.name = "wm8731",
.of_match_table = wm8731_of_match,
},
.probe = wm8731_i2c_probe,
.remove = wm8731_i2c_remove,
.id_table = wm8731_i2c_id,
};
#endif
static int __init wm8731_modinit(void)
{
int ret = 0;
#if IS_ENABLED(CONFIG_I2C)
ret = i2c_add_driver(&wm8731_i2c_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n",
ret);
}
#endif
#if defined(CONFIG_SPI_MASTER)
ret = spi_register_driver(&wm8731_spi_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n",
ret);
}
#endif
return ret;
}
module_init(wm8731_modinit);
static void __exit wm8731_exit(void)
{
#if IS_ENABLED(CONFIG_I2C)
i2c_del_driver(&wm8731_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
spi_unregister_driver(&wm8731_spi_driver);
#endif
}
module_exit(wm8731_exit);
MODULE_DESCRIPTION("ASoC WM8731 driver");
MODULE_AUTHOR("Richard Purdie");
MODULE_LICENSE("GPL");