Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-12-02 00:51:44 +00:00
Code Issues Packages Projects Releases Wiki Activity
df23fcd56b
linux/sound/soc/codecs/ak4613.c
Rob Herring 340d79a14d
ASoC: Explicitly include correct DT includes 
The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it was merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev> # for at91
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231006-dt-asoc-header-cleanups-v3-1-13a4f0f7fee6@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-10-09 13:13:56 +01:00

928 lines
23 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0
//
// ak4613.c -- Asahi Kasei ALSA Soc Audio driver
//
// Copyright (C) 2015 Renesas Electronics Corporation
// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
//
// Based on ak4642.c by Kuninori Morimoto
// Based on wm8731.c by Richard Purdie
// Based on ak4535.c by Richard Purdie
// Based on wm8753.c by Liam Girdwood
/*
* +-------+
* |AK4613 |
* SDTO1 <-| |
* | |
* SDTI1 ->| |
* SDTI2 ->| |
* SDTI3 ->| |
* +-------+
*
* +---+
* clk | |___________________________________________...
*
* [TDM512]
* SDTO1 [L1][R1][L2][R2]
* SDTI1 [L1][R1][L2][R2][L3][R3][L4][R4][L5][R5][L6][R6]
*
* [TDM256]
* SDTO1 [L1][R1][L2][R2]
* SDTI1 [L1][R1][L2][R2][L3][R3][L4][R4]
* SDTI2 [L5][R5][L6][R6]
*
* [TDM128]
* SDTO1 [L1][R1][L2][R2]
* SDTI1 [L1][R1][L2][R2]
* SDTI2 [L3][R3][L4][R4]
* SDTI3 [L5][R5][L6][R6]
*
* [STEREO]
* Playback 2ch : SDTI1
* Capture 2ch : SDTO1
*
* [TDM512]
* Playback 12ch : SDTI1
* Capture 4ch : SDTO1
*
* [TDM256]
* Playback 12ch : SDTI1 + SDTI2
* Playback 8ch : SDTI1
* Capture 4ch : SDTO1
*
* [TDM128]
* Playback 12ch : SDTI1 + SDTI2 + SDTI3
* Playback 8ch : SDTI1 + SDTI2
* Playback 4ch : SDTI1
* Capture 4ch : SDTO1
*
*
* !!! NOTE !!!
*
* Renesas is the only user of ak4613 on upstream so far,
* but the chip connection is like below.
* Thus, Renesas can't test all connection case.
* Tested TDM is very limited.
*
* +-----+ +-----------+
* | SoC | | AK4613 |
* | |<-----|SDTO1 IN1|<-- Mic
* | | | IN2|
* | | | |
* | |----->|SDTI1 OUT1|--> Headphone
* +-----+ |SDTI2 OUT2|
* |SDTI3 OUT3|
* | OUT4|
* | OUT5|
* | OUT6|
* +-----------+
*
* Renesas SoC can handle [2, 6,8] channels.
* Ak4613 can handle [2,4, 8,12] channels.
*
* Because of above HW connection and available channels number,
* Renesas could test are ...
*
* [STEREO] Playback 2ch : SDTI1
* Capture 2ch : SDTO1
* [TDM256] Playback 8ch : SDTI1 (*)
*
* (*) it used 8ch data between SoC <-> AK4613 on TDM256 mode,
* but could confirm is only first 2ch because only 1
* Headphone is connected.
*
* see
* AK4613_ENABLE_TDM_TEST
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/of.h>
#include <linux/of_graph.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <sound/soc.h>
#include <sound/pcm_params.h>
#include <sound/tlv.h>
#define PW_MGMT1 0x00 /* Power Management 1 */
#define PW_MGMT2 0x01 /* Power Management 2 */
#define PW_MGMT3 0x02 /* Power Management 3 */
#define CTRL1 0x03 /* Control 1 */
#define CTRL2 0x04 /* Control 2 */
#define DEMP1 0x05 /* De-emphasis1 */
#define DEMP2 0x06 /* De-emphasis2 */
#define OFD 0x07 /* Overflow Detect */
#define ZRD 0x08 /* Zero Detect */
#define ICTRL 0x09 /* Input Control */
#define OCTRL 0x0a /* Output Control */
#define LOUT1 0x0b /* LOUT1 Volume Control */
#define ROUT1 0x0c /* ROUT1 Volume Control */
#define LOUT2 0x0d /* LOUT2 Volume Control */
#define ROUT2 0x0e /* ROUT2 Volume Control */
#define LOUT3 0x0f /* LOUT3 Volume Control */
#define ROUT3 0x10 /* ROUT3 Volume Control */
#define LOUT4 0x11 /* LOUT4 Volume Control */
#define ROUT4 0x12 /* ROUT4 Volume Control */
#define LOUT5 0x13 /* LOUT5 Volume Control */
#define ROUT5 0x14 /* ROUT5 Volume Control */
#define LOUT6 0x15 /* LOUT6 Volume Control */
#define ROUT6 0x16 /* ROUT6 Volume Control */
/* PW_MGMT1 */
#define RSTN BIT(0)
#define PMDAC BIT(1)
#define PMADC BIT(2)
#define PMVR BIT(3)
/* PW_MGMT2 */
#define PMAD_ALL 0x7
/* PW_MGMT3 */
#define PMDA_ALL 0x3f
/* CTRL1 */
#define DIF0 BIT(3)
#define DIF1 BIT(4)
#define DIF2 BIT(5)
#define TDM0 BIT(6)
#define TDM1 BIT(7)
#define NO_FMT (0xff)
#define FMT_MASK (0xf8)
/* CTRL2 */
#define DFS_MASK (3 << 2)
#define DFS_NORMAL_SPEED (0 << 2)
#define DFS_DOUBLE_SPEED (1 << 2)
#define DFS_QUAD_SPEED (2 << 2)
/* ICTRL */
#define ICTRL_MASK (0x3)
/* OCTRL */
#define OCTRL_MASK (0x3F)
/*
* configs
*
* 0x000000BA
*
* B : AK4613_CONFIG_SDTI_x
* A : AK4613_CONFIG_MODE_x
*/
#define AK4613_CONFIG_SET(priv, x) priv->configs |= AK4613_CONFIG_##x
#define AK4613_CONFIG_GET(priv, x) (priv->configs & AK4613_CONFIG_##x##_MASK)
/*
* AK4613_CONFIG_SDTI_x
*
* It indicates how many SDTIx is connected.
*/
#define AK4613_CONFIG_SDTI_MASK (0xF << 4)
#define AK4613_CONFIG_SDTI(x) (((x) & 0xF) << 4)
#define AK4613_CONFIG_SDTI_set(priv, x) AK4613_CONFIG_SET(priv, SDTI(x))
#define AK4613_CONFIG_SDTI_get(priv) ((AK4613_CONFIG_GET(priv, SDTI) >> 4) & 0xF)
/*
* AK4613_CONFIG_MODE_x
*
* Same as Ctrl1 :: TDM1/TDM0
* No shift is requested
* see
* AK4613_CTRL1_TO_MODE()
* Table 11/12/13/14
*/
#define AK4613_CONFIG_MODE_MASK (0xF)
#define AK4613_CONFIG_MODE_STEREO (0x0)
#define AK4613_CONFIG_MODE_TDM512 (0x1)
#define AK4613_CONFIG_MODE_TDM256 (0x2)
#define AK4613_CONFIG_MODE_TDM128 (0x3)
/*
* !!!! FIXME !!!!
*
* Because of testable HW limitation, TDM256 8ch TDM was only tested.
* This driver uses AK4613_ENABLE_TDM_TEST instead of new DT property so far.
* Don't hesitate to update driver, you don't need to care compatible
* with Renesas.
*
* #define AK4613_ENABLE_TDM_TEST
*/
struct ak4613_interface {
unsigned int width;
unsigned int fmt;
u8 dif;
};
struct ak4613_priv {
struct mutex lock;
struct snd_pcm_hw_constraint_list constraint_rates;
struct snd_pcm_hw_constraint_list constraint_channels;
struct work_struct dummy_write_work;
struct snd_soc_component *component;
unsigned int rate;
unsigned int sysclk;
unsigned int fmt;
unsigned int configs;
int cnt;
u8 ctrl1;
u8 oc;
u8 ic;
};
/*
* Playback Volume
*
* max : 0x00 : 0 dB
* ( 0.5 dB step )
* min : 0xFE : -127.0 dB
* mute: 0xFF
*/
static const DECLARE_TLV_DB_SCALE(out_tlv, -12750, 50, 1);
static const struct snd_kcontrol_new ak4613_snd_controls[] = {
SOC_DOUBLE_R_TLV("Digital Playback Volume1", LOUT1, ROUT1,
0, 0xFF, 1, out_tlv),
SOC_DOUBLE_R_TLV("Digital Playback Volume2", LOUT2, ROUT2,
0, 0xFF, 1, out_tlv),
SOC_DOUBLE_R_TLV("Digital Playback Volume3", LOUT3, ROUT3,
0, 0xFF, 1, out_tlv),
SOC_DOUBLE_R_TLV("Digital Playback Volume4", LOUT4, ROUT4,
0, 0xFF, 1, out_tlv),
SOC_DOUBLE_R_TLV("Digital Playback Volume5", LOUT5, ROUT5,
0, 0xFF, 1, out_tlv),
SOC_DOUBLE_R_TLV("Digital Playback Volume6", LOUT6, ROUT6,
0, 0xFF, 1, out_tlv),
};
static const struct reg_default ak4613_reg[] = {
{ 0x0, 0x0f }, { 0x1, 0x07 }, { 0x2, 0x3f }, { 0x3, 0x20 },
{ 0x4, 0x20 }, { 0x5, 0x55 }, { 0x6, 0x05 }, { 0x7, 0x07 },
{ 0x8, 0x0f }, { 0x9, 0x07 }, { 0xa, 0x3f }, { 0xb, 0x00 },
{ 0xc, 0x00 }, { 0xd, 0x00 }, { 0xe, 0x00 }, { 0xf, 0x00 },
{ 0x10, 0x00 }, { 0x11, 0x00 }, { 0x12, 0x00 }, { 0x13, 0x00 },
{ 0x14, 0x00 }, { 0x15, 0x00 }, { 0x16, 0x00 },
};
/*
* CTRL1 register
* see
* Table 11/12/13/14
*/
#define AUDIO_IFACE(_dif, _width, _fmt) \
{ \
.dif = _dif, \
.width = _width, \
.fmt = SND_SOC_DAIFMT_##_fmt,\
}
static const struct ak4613_interface ak4613_iface[] = {
/* It doesn't support asymmetric format */
AUDIO_IFACE(0x03, 24, LEFT_J),
AUDIO_IFACE(0x04, 24, I2S),
};
#define AK4613_CTRL1_TO_MODE(priv) ((priv)->ctrl1 >> 6) /* AK4613_CONFIG_MODE_x */
static const struct regmap_config ak4613_regmap_cfg = {
.reg_bits = 8,
.val_bits = 8,
.max_register = 0x16,
.reg_defaults = ak4613_reg,
.num_reg_defaults = ARRAY_SIZE(ak4613_reg),
.cache_type = REGCACHE_RBTREE,
};
static const struct of_device_id ak4613_of_match[] = {
{ .compatible = "asahi-kasei,ak4613", .data = &ak4613_regmap_cfg },
{},
};
MODULE_DEVICE_TABLE(of, ak4613_of_match);
static const struct i2c_device_id ak4613_i2c_id[] = {
{ "ak4613", (kernel_ulong_t)&ak4613_regmap_cfg },
{ }
};
MODULE_DEVICE_TABLE(i2c, ak4613_i2c_id);
static const struct snd_soc_dapm_widget ak4613_dapm_widgets[] = {
/* Outputs */
SND_SOC_DAPM_OUTPUT("LOUT1"),
SND_SOC_DAPM_OUTPUT("LOUT2"),
SND_SOC_DAPM_OUTPUT("LOUT3"),
SND_SOC_DAPM_OUTPUT("LOUT4"),
SND_SOC_DAPM_OUTPUT("LOUT5"),
SND_SOC_DAPM_OUTPUT("LOUT6"),
SND_SOC_DAPM_OUTPUT("ROUT1"),
SND_SOC_DAPM_OUTPUT("ROUT2"),
SND_SOC_DAPM_OUTPUT("ROUT3"),
SND_SOC_DAPM_OUTPUT("ROUT4"),
SND_SOC_DAPM_OUTPUT("ROUT5"),
SND_SOC_DAPM_OUTPUT("ROUT6"),
/* Inputs */
SND_SOC_DAPM_INPUT("LIN1"),
SND_SOC_DAPM_INPUT("LIN2"),
SND_SOC_DAPM_INPUT("RIN1"),
SND_SOC_DAPM_INPUT("RIN2"),
/* DAC */
SND_SOC_DAPM_DAC("DAC1", NULL, PW_MGMT3, 0, 0),
SND_SOC_DAPM_DAC("DAC2", NULL, PW_MGMT3, 1, 0),
SND_SOC_DAPM_DAC("DAC3", NULL, PW_MGMT3, 2, 0),
SND_SOC_DAPM_DAC("DAC4", NULL, PW_MGMT3, 3, 0),
SND_SOC_DAPM_DAC("DAC5", NULL, PW_MGMT3, 4, 0),
SND_SOC_DAPM_DAC("DAC6", NULL, PW_MGMT3, 5, 0),
/* ADC */
SND_SOC_DAPM_ADC("ADC1", NULL, PW_MGMT2, 0, 0),
SND_SOC_DAPM_ADC("ADC2", NULL, PW_MGMT2, 1, 0),
};
static const struct snd_soc_dapm_route ak4613_intercon[] = {
{"LOUT1", NULL, "DAC1"},
{"LOUT2", NULL, "DAC2"},
{"LOUT3", NULL, "DAC3"},
{"LOUT4", NULL, "DAC4"},
{"LOUT5", NULL, "DAC5"},
{"LOUT6", NULL, "DAC6"},
{"ROUT1", NULL, "DAC1"},
{"ROUT2", NULL, "DAC2"},
{"ROUT3", NULL, "DAC3"},
{"ROUT4", NULL, "DAC4"},
{"ROUT5", NULL, "DAC5"},
{"ROUT6", NULL, "DAC6"},
{"DAC1", NULL, "Playback"},
{"DAC2", NULL, "Playback"},
{"DAC3", NULL, "Playback"},
{"DAC4", NULL, "Playback"},
{"DAC5", NULL, "Playback"},
{"DAC6", NULL, "Playback"},
{"Capture", NULL, "ADC1"},
{"Capture", NULL, "ADC2"},
{"ADC1", NULL, "LIN1"},
{"ADC2", NULL, "LIN2"},
{"ADC1", NULL, "RIN1"},
{"ADC2", NULL, "RIN2"},
};
static void ak4613_dai_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
struct device *dev = component->dev;
mutex_lock(&priv->lock);
priv->cnt--;
if (priv->cnt < 0) {
dev_err(dev, "unexpected counter error\n");
priv->cnt = 0;
}
if (!priv->cnt)
priv->ctrl1 = 0;
mutex_unlock(&priv->lock);
}
static void ak4613_hw_constraints(struct ak4613_priv *priv,
struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
static const unsigned int ak4613_rates[] = {
32000,
44100,
48000,
64000,
88200,
96000,
176400,
192000,
};
#define AK4613_CHANNEL_2 0
#define AK4613_CHANNEL_4 1
#define AK4613_CHANNEL_8 2
#define AK4613_CHANNEL_12 3
#define AK4613_CHANNEL_NONE -1
static const unsigned int ak4613_channels[] = {
[AK4613_CHANNEL_2] = 2,
[AK4613_CHANNEL_4] = 4,
[AK4613_CHANNEL_8] = 8,
[AK4613_CHANNEL_12] = 12,
};
#define MODE_MAX 4
#define SDTx_MAX 4
#define MASK(x) (1 << AK4613_CHANNEL_##x)
static const int mask_list[MODE_MAX][SDTx_MAX] = {
/* SDTO SDTIx1 SDTIx2 SDTIx3 */
[AK4613_CONFIG_MODE_STEREO] = { MASK(2), MASK(2), MASK(2), MASK(2)},
[AK4613_CONFIG_MODE_TDM512] = { MASK(4), MASK(12), MASK(12), MASK(12)},
[AK4613_CONFIG_MODE_TDM256] = { MASK(4), MASK(8), MASK(8)|MASK(12), MASK(8)|MASK(12)},
[AK4613_CONFIG_MODE_TDM128] = { MASK(4), MASK(4), MASK(4)|MASK(8), MASK(4)|MASK(8)|MASK(12)},
};
struct snd_pcm_hw_constraint_list *constraint;
unsigned int mask;
unsigned int mode;
unsigned int fs;
int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
int sdti_num;
int i;
constraint = &priv->constraint_rates;
constraint->list = ak4613_rates;
constraint->mask = 0;
constraint->count = 0;
/*
* Slave Mode
* Normal: [32kHz, 48kHz] : 256fs,384fs or 512fs
* Double: [64kHz, 96kHz] : 256fs
* Quad : [128kHz,192kHz]: 128fs
*
* Master mode
* Normal: [32kHz, 48kHz] : 256fs or 512fs
* Double: [64kHz, 96kHz] : 256fs
* Quad : [128kHz,192kHz]: 128fs
*/
for (i = 0; i < ARRAY_SIZE(ak4613_rates); i++) {
/* minimum fs on each range */
fs = (ak4613_rates[i] <= 96000) ? 256 : 128;
if (priv->sysclk >= ak4613_rates[i] * fs)
constraint->count = i + 1;
}
snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_RATE, constraint);
sdti_num = AK4613_CONFIG_SDTI_get(priv);
if (WARN_ON(sdti_num >= SDTx_MAX))
return;
if (priv->cnt) {
/*
* If it was already working,
* the constraint is same as working mode.
*/
mode = AK4613_CTRL1_TO_MODE(priv);
mask = 0; /* no default */
} else {
/*
* It is not yet working,
* the constraint is based on board configs.
* STEREO mask is default
*/
mode = AK4613_CONFIG_GET(priv, MODE);
mask = mask_list[AK4613_CONFIG_MODE_STEREO][is_play * sdti_num];
}
if (WARN_ON(mode >= MODE_MAX))
return;
/* add each mode mask */
mask |= mask_list[mode][is_play * sdti_num];
constraint = &priv->constraint_channels;
constraint->list = ak4613_channels;
constraint->mask = mask;
constraint->count = sizeof(ak4613_channels);
snd_pcm_hw_constraint_list(runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS, constraint);
}
static int ak4613_dai_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
mutex_lock(&priv->lock);
ak4613_hw_constraints(priv, substream);
priv->cnt++;
mutex_unlock(&priv->lock);
return 0;
}
static int ak4613_dai_set_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_component *component = codec_dai->component;
struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
priv->sysclk = freq;
return 0;
}
static int ak4613_dai_set_fmt(struct snd_soc_dai *dai, unsigned int format)
{
struct snd_soc_component *component = dai->component;
struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
unsigned int fmt;
fmt = format & SND_SOC_DAIFMT_FORMAT_MASK;
switch (fmt) {
case SND_SOC_DAIFMT_LEFT_J:
case SND_SOC_DAIFMT_I2S:
priv->fmt = fmt;
break;
default:
return -EINVAL;
}
fmt = format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
switch (fmt) {
case SND_SOC_DAIFMT_CBC_CFC:
break;
default:
/*
* SUPPORTME
*
* "clock provider" is not yet supperted
*/
return -EINVAL;
}
return 0;
}
static int ak4613_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
struct device *dev = component->dev;
unsigned int width = params_width(params);
unsigned int fmt = priv->fmt;
unsigned int rate;
int i, ret;
u8 ctrl2;
rate = params_rate(params);
switch (rate) {
case 32000:
case 44100:
case 48000:
ctrl2 = DFS_NORMAL_SPEED;
break;
case 64000:
case 88200:
case 96000:
ctrl2 = DFS_DOUBLE_SPEED;
break;
case 176400:
case 192000:
ctrl2 = DFS_QUAD_SPEED;
break;
default:
return -EINVAL;
}
priv->rate = rate;
/*
* FIXME
*
* It doesn't have full TDM suppert yet
*/
ret = -EINVAL;
mutex_lock(&priv->lock);
if (priv->cnt > 1) {
/*
* If it was already working, use current priv->ctrl1
*/
ret = 0;
} else {
/*
* It is not yet working,
*/
unsigned int channel = params_channels(params);
u8 tdm;
/* STEREO or TDM */
if (channel == 2)
tdm = AK4613_CONFIG_MODE_STEREO;
else
tdm = AK4613_CONFIG_GET(priv, MODE);
for (i = ARRAY_SIZE(ak4613_iface) - 1; i >= 0; i--) {
const struct ak4613_interface *iface = ak4613_iface + i;
if ((iface->fmt == fmt) && (iface->width == width)) {
/*
* Ctrl1
* | D7 | D6 | D5 | D4 | D3 | D2 | D1 | D0 |
* |TDM1|TDM0|DIF2|DIF1|DIF0|ATS1|ATS0|SMUTE|
* < tdm > < iface->dif >
*/
priv->ctrl1 = (tdm << 6) | (iface->dif << 3);
ret = 0;
break;
}
}
}
mutex_unlock(&priv->lock);
if (ret < 0)
goto hw_params_end;
snd_soc_component_update_bits(component, CTRL1, FMT_MASK, priv->ctrl1);
snd_soc_component_update_bits(component, CTRL2, DFS_MASK, ctrl2);
snd_soc_component_update_bits(component, ICTRL, ICTRL_MASK, priv->ic);
snd_soc_component_update_bits(component, OCTRL, OCTRL_MASK, priv->oc);
hw_params_end:
if (ret < 0)
dev_warn(dev, "unsupported data width/format combination\n");
return ret;
}
static int ak4613_set_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
u8 mgmt1 = 0;
switch (level) {
case SND_SOC_BIAS_ON:
mgmt1 |= RSTN;
fallthrough;
case SND_SOC_BIAS_PREPARE:
mgmt1 |= PMADC | PMDAC;
fallthrough;
case SND_SOC_BIAS_STANDBY:
mgmt1 |= PMVR;
fallthrough;
case SND_SOC_BIAS_OFF:
default:
break;
}
snd_soc_component_write(component, PW_MGMT1, mgmt1);
return 0;
}
static void ak4613_dummy_write(struct work_struct *work)
{
struct ak4613_priv *priv = container_of(work,
struct ak4613_priv,
dummy_write_work);
struct snd_soc_component *component = priv->component;
unsigned int mgmt1;
unsigned int mgmt3;
/*
* PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
*
* Note
*
* To avoid extra delay, we want to avoid preemption here,
* but we can't. Because it uses I2C access which is using IRQ
* and sleep. Thus, delay might be more than 5 LR clocks
* see also
* ak4613_dai_trigger()
*/
udelay(5000000 / priv->rate);
mgmt1 = snd_soc_component_read(component, PW_MGMT1);
mgmt3 = snd_soc_component_read(component, PW_MGMT3);
snd_soc_component_write(component, PW_MGMT1, mgmt1);
snd_soc_component_write(component, PW_MGMT3, mgmt3);
}
static int ak4613_dai_trigger(struct snd_pcm_substream *substream, int cmd,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
struct ak4613_priv *priv = snd_soc_component_get_drvdata(component);
/*
* FIXME
*
* PW_MGMT1 / PW_MGMT3 needs dummy write at least after 5 LR clocks
* from Power Down Release. Otherwise, Playback volume will be 0dB.
* To avoid complex multiple delay/dummy_write method from
* ak4613_set_bias_level() / SND_SOC_DAPM_DAC_E("DACx", ...),
* call it once here.
*
* But, unfortunately, we can't "write" here because here is atomic
* context (It uses I2C access for writing).
* Thus, use schedule_work() to switching to normal context
* immediately.
*
* Note
*
* Calling ak4613_dummy_write() function might be delayed.
* In such case, ak4613 volume might be temporarily 0dB when
* beggining of playback.
* see also
* ak4613_dummy_write()
*/
if ((cmd != SNDRV_PCM_TRIGGER_START) &&
(cmd != SNDRV_PCM_TRIGGER_RESUME))
return 0;
if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK)
return 0;
priv->component = component;
schedule_work(&priv->dummy_write_work);
return 0;
}
/*
* Select below from Sound Card, not Auto
* SND_SOC_DAIFMT_CBC_CFC
* SND_SOC_DAIFMT_CBP_CFP
*/
static u64 ak4613_dai_formats =
SND_SOC_POSSIBLE_DAIFMT_I2S |
SND_SOC_POSSIBLE_DAIFMT_LEFT_J;
static const struct snd_soc_dai_ops ak4613_dai_ops = {
.startup = ak4613_dai_startup,
.shutdown = ak4613_dai_shutdown,
.set_sysclk = ak4613_dai_set_sysclk,
.set_fmt = ak4613_dai_set_fmt,
.trigger = ak4613_dai_trigger,
.hw_params = ak4613_dai_hw_params,
.auto_selectable_formats = &ak4613_dai_formats,
.num_auto_selectable_formats = 1,
};
#define AK4613_PCM_RATE (SNDRV_PCM_RATE_32000 |\
SNDRV_PCM_RATE_44100 |\
SNDRV_PCM_RATE_48000 |\
SNDRV_PCM_RATE_64000 |\
SNDRV_PCM_RATE_88200 |\
SNDRV_PCM_RATE_96000 |\
SNDRV_PCM_RATE_176400 |\
SNDRV_PCM_RATE_192000)
#define AK4613_PCM_FMTBIT (SNDRV_PCM_FMTBIT_S24_LE)
static struct snd_soc_dai_driver ak4613_dai = {
.name = "ak4613-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 12,
.rates = AK4613_PCM_RATE,
.formats = AK4613_PCM_FMTBIT,
},
.capture = {
.stream_name = "Capture",
.channels_min = 2,
.channels_max = 4,
.rates = AK4613_PCM_RATE,
.formats = AK4613_PCM_FMTBIT,
},
.ops = &ak4613_dai_ops,
.symmetric_rate = 1,
};
static int ak4613_suspend(struct snd_soc_component *component)
{
struct regmap *regmap = dev_get_regmap(component->dev, NULL);
regcache_cache_only(regmap, true);
regcache_mark_dirty(regmap);
return 0;
}
static int ak4613_resume(struct snd_soc_component *component)
{
struct regmap *regmap = dev_get_regmap(component->dev, NULL);
regcache_cache_only(regmap, false);
return regcache_sync(regmap);
}
static const struct snd_soc_component_driver soc_component_dev_ak4613 = {
.suspend = ak4613_suspend,
.resume = ak4613_resume,
.set_bias_level = ak4613_set_bias_level,
.controls = ak4613_snd_controls,
.num_controls = ARRAY_SIZE(ak4613_snd_controls),
.dapm_widgets = ak4613_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(ak4613_dapm_widgets),
.dapm_routes = ak4613_intercon,
.num_dapm_routes = ARRAY_SIZE(ak4613_intercon),
.idle_bias_on = 1,
.endianness = 1,
};
static void ak4613_parse_of(struct ak4613_priv *priv,
struct device *dev)
{
struct device_node *np = dev->of_node;
char prop[32];
int sdti_num;
int i;
/* Input 1 - 2 */
for (i = 0; i < 2; i++) {
snprintf(prop, sizeof(prop), "asahi-kasei,in%d-single-end", i + 1);
if (!of_get_property(np, prop, NULL))
priv->ic |= 1 << i;
}
/* Output 1 - 6 */
for (i = 0; i < 6; i++) {
snprintf(prop, sizeof(prop), "asahi-kasei,out%d-single-end", i + 1);
if (!of_get_property(np, prop, NULL))
priv->oc |= 1 << i;
}
/*
* enable TDM256 test
*
* !!! FIXME !!!
*
* It should be configured by DT or other way
* if it was full supported.
* But it is using ifdef style for now for test
* purpose.
*/
#if defined(AK4613_ENABLE_TDM_TEST)
AK4613_CONFIG_SET(priv, MODE_TDM256);
#endif
/*
* connected STDI
* TDM support is assuming it is probed via Audio-Graph-Card style here.
* Default is SDTIx1 if it was probed via Simple-Audio-Card for now.
*/
sdti_num = of_graph_get_endpoint_count(np);
if ((sdti_num >= SDTx_MAX) || (sdti_num < 1))
sdti_num = 1;
AK4613_CONFIG_SDTI_set(priv, sdti_num);
}
static int ak4613_i2c_probe(struct i2c_client *i2c)
{
struct device *dev = &i2c->dev;
const struct regmap_config *regmap_cfg;
struct regmap *regmap;
struct ak4613_priv *priv;
regmap_cfg = i2c_get_match_data(i2c);
if (!regmap_cfg)
return -EINVAL;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
ak4613_parse_of(priv, dev);
priv->ctrl1 = 0;
priv->cnt = 0;
priv->sysclk = 0;
INIT_WORK(&priv->dummy_write_work, ak4613_dummy_write);
mutex_init(&priv->lock);
i2c_set_clientdata(i2c, priv);
regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
return devm_snd_soc_register_component(dev, &soc_component_dev_ak4613,
&ak4613_dai, 1);
}
static struct i2c_driver ak4613_i2c_driver = {
.driver = {
.name = "ak4613-codec",
.of_match_table = ak4613_of_match,
},
.probe = ak4613_i2c_probe,
.id_table = ak4613_i2c_id,
};
module_i2c_driver(ak4613_i2c_driver);
MODULE_DESCRIPTION("Soc AK4613 driver");
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
MODULE_LICENSE("GPL v2");
Reference in New Issue View Git Blame Copy Permalink