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linux-stable/sound/soc/codecs/wm8711.c
Mark Brown 368a233bc3
ASoC: wm8711: Update to use maple tree register cache 
The maple tree register cache is based on a much more modern data structure
than the rbtree cache and makes optimisation choices which are probably
more appropriate for modern systems than those made by the rbtree cache. In
v6.5 it has also acquired the ability to generate multi-register writes in
sync operations, bringing performance up to parity with the rbtree cache
there.

Update the wm8711 driver to use the more modern data structure.

Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230713-asoc-cirrus-maple-v1-19-a62651831735@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-18 14:45:19 +01:00

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// SPDX-License-Identifier: GPL-2.0-only
/*
* wm8711.c -- WM8711 ALSA SoC Audio driver
*
* Copyright 2006 Wolfson Microelectronics
*
* Author: Mike Arthur <Mike.Arthur@wolfsonmicro.com>
*
* Based on wm8731.c by Richard Purdie
*/
#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/regmap.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
#include <linux/of_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <sound/initval.h>
#include "wm8711.h"
/* codec private data */
struct wm8711_priv {
struct regmap *regmap;
unsigned int sysclk;
};
/*
* wm8711 register cache
* We can't read the WM8711 register space when we are
* using 2 wire for device control, so we cache them instead.
* There is no point in caching the reset register
*/
static const struct reg_default wm8711_reg_defaults[] = {
{ 0, 0x0079 }, { 1, 0x0079 }, { 2, 0x000a }, { 3, 0x0008 },
{ 4, 0x009f }, { 5, 0x000a }, { 6, 0x0000 }, { 7, 0x0000 },
};
static bool wm8711_volatile(struct device *dev, unsigned int reg)
{
switch (reg) {
case WM8711_RESET:
return true;
default:
return false;
}
}
#define wm8711_reset(c) snd_soc_component_write(c, WM8711_RESET, 0)
static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
static const struct snd_kcontrol_new wm8711_snd_controls[] = {
SOC_DOUBLE_R_TLV("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V,
0, 127, 0, out_tlv),
SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V,
7, 1, 0),
};
/* Output Mixer */
static const struct snd_kcontrol_new wm8711_output_mixer_controls[] = {
SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA, 3, 1, 0),
SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA, 4, 1, 0),
};
static const struct snd_soc_dapm_widget wm8711_dapm_widgets[] = {
SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR, 4, 1,
&wm8711_output_mixer_controls[0],
ARRAY_SIZE(wm8711_output_mixer_controls)),
SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR, 3, 1),
SND_SOC_DAPM_OUTPUT("LOUT"),
SND_SOC_DAPM_OUTPUT("LHPOUT"),
SND_SOC_DAPM_OUTPUT("ROUT"),
SND_SOC_DAPM_OUTPUT("RHPOUT"),
};
static const struct snd_soc_dapm_route wm8711_intercon[] = {
/* output mixer */
{"Output Mixer", "Line Bypass Switch", "Line Input"},
{"Output Mixer", "HiFi Playback Switch", "DAC"},
/* outputs */
{"RHPOUT", NULL, "Output Mixer"},
{"ROUT", NULL, "Output Mixer"},
{"LHPOUT", NULL, "Output Mixer"},
{"LOUT", NULL, "Output Mixer"},
};
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},
};
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 wm8711_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 wm8711_priv *wm8711 = snd_soc_component_get_drvdata(component);
u16 iface = snd_soc_component_read(component, WM8711_IFACE) & 0xfff3;
int i = get_coeff(wm8711->sysclk, params_rate(params));
u16 srate = (coeff_div[i].sr << 2) |
(coeff_div[i].bosr << 1) | coeff_div[i].usb;
snd_soc_component_write(component, WM8711_SRATE, srate);
/* bit size */
switch (params_width(params)) {
case 16:
break;
case 20:
iface |= 0x0004;
break;
case 24:
iface |= 0x0008;
break;
}
snd_soc_component_write(component, WM8711_IFACE, iface);
return 0;
}
static int wm8711_pcm_prepare(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
/* set active */
snd_soc_component_write(component, WM8711_ACTIVE, 0x0001);
return 0;
}
static void wm8711_shutdown(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_component *component = dai->component;
/* deactivate */
if (!snd_soc_component_active(component)) {
udelay(50);
snd_soc_component_write(component, WM8711_ACTIVE, 0x0);
}
}
static int wm8711_mute(struct snd_soc_dai *dai, int mute, int direction)
{
struct snd_soc_component *component = dai->component;
u16 mute_reg = snd_soc_component_read(component, WM8711_APDIGI) & 0xfff7;
if (mute)
snd_soc_component_write(component, WM8711_APDIGI, mute_reg | 0x8);
else
snd_soc_component_write(component, WM8711_APDIGI, mute_reg);
return 0;
}
static int wm8711_set_dai_sysclk(struct snd_soc_dai *codec_dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_component *component = codec_dai->component;
struct wm8711_priv *wm8711 = snd_soc_component_get_drvdata(component);
switch (freq) {
case 11289600:
case 12000000:
case 12288000:
case 16934400:
case 18432000:
wm8711->sysclk = freq;
return 0;
}
return -EINVAL;
}
static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai,
unsigned int fmt)
{
struct snd_soc_component *component = codec_dai->component;
u16 iface = snd_soc_component_read(component, WM8711_IFACE) & 0x000c;
/* 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 |= 0x0003;
break;
case SND_SOC_DAIFMT_DSP_B:
iface |= 0x0013;
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_component_write(component, WM8711_IFACE, iface);
return 0;
}
static int wm8711_set_bias_level(struct snd_soc_component *component,
enum snd_soc_bias_level level)
{
struct wm8711_priv *wm8711 = snd_soc_component_get_drvdata(component);
u16 reg = snd_soc_component_read(component, WM8711_PWR) & 0xff7f;
switch (level) {
case SND_SOC_BIAS_ON:
snd_soc_component_write(component, WM8711_PWR, reg);
break;
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF)
regcache_sync(wm8711->regmap);
snd_soc_component_write(component, WM8711_PWR, reg | 0x0040);
break;
case SND_SOC_BIAS_OFF:
snd_soc_component_write(component, WM8711_ACTIVE, 0x0);
snd_soc_component_write(component, WM8711_PWR, 0xffff);
break;
}
return 0;
}
#define WM8711_RATES SNDRV_PCM_RATE_8000_96000
#define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE)
static const struct snd_soc_dai_ops wm8711_ops = {
.prepare = wm8711_pcm_prepare,
.hw_params = wm8711_hw_params,
.shutdown = wm8711_shutdown,
.mute_stream = wm8711_mute,
.set_sysclk = wm8711_set_dai_sysclk,
.set_fmt = wm8711_set_dai_fmt,
.no_capture_mute = 1,
};
static struct snd_soc_dai_driver wm8711_dai = {
.name = "wm8711-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = WM8711_RATES,
.formats = WM8711_FORMATS,
},
.ops = &wm8711_ops,
};
static int wm8711_probe(struct snd_soc_component *component)
{
int ret;
ret = wm8711_reset(component);
if (ret < 0) {
dev_err(component->dev, "Failed to issue reset\n");
return ret;
}
/* Latch the update bits */
snd_soc_component_update_bits(component, WM8711_LOUT1V, 0x0100, 0x0100);
snd_soc_component_update_bits(component, WM8711_ROUT1V, 0x0100, 0x0100);
return ret;
}
static const struct snd_soc_component_driver soc_component_dev_wm8711 = {
.probe = wm8711_probe,
.set_bias_level = wm8711_set_bias_level,
.controls = wm8711_snd_controls,
.num_controls = ARRAY_SIZE(wm8711_snd_controls),
.dapm_widgets = wm8711_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(wm8711_dapm_widgets),
.dapm_routes = wm8711_intercon,
.num_dapm_routes = ARRAY_SIZE(wm8711_intercon),
.suspend_bias_off = 1,
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
};
static const struct of_device_id wm8711_of_match[] = {
{ .compatible = "wlf,wm8711", },
{ }
};
MODULE_DEVICE_TABLE(of, wm8711_of_match);
static const struct regmap_config wm8711_regmap = {
.reg_bits = 7,
.val_bits = 9,
.max_register = WM8711_RESET,
.reg_defaults = wm8711_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(wm8711_reg_defaults),
.cache_type = REGCACHE_MAPLE,
.volatile_reg = wm8711_volatile,
};
#if defined(CONFIG_SPI_MASTER)
static int wm8711_spi_probe(struct spi_device *spi)
{
struct wm8711_priv *wm8711;
int ret;
wm8711 = devm_kzalloc(&spi->dev, sizeof(struct wm8711_priv),
GFP_KERNEL);
if (wm8711 == NULL)
return -ENOMEM;
wm8711->regmap = devm_regmap_init_spi(spi, &wm8711_regmap);
if (IS_ERR(wm8711->regmap))
return PTR_ERR(wm8711->regmap);
spi_set_drvdata(spi, wm8711);
ret = devm_snd_soc_register_component(&spi->dev,
&soc_component_dev_wm8711, &wm8711_dai, 1);
return ret;
}
static struct spi_driver wm8711_spi_driver = {
.driver = {
.name = "wm8711",
.of_match_table = wm8711_of_match,
},
.probe = wm8711_spi_probe,
};
#endif /* CONFIG_SPI_MASTER */
#if IS_ENABLED(CONFIG_I2C)
static int wm8711_i2c_probe(struct i2c_client *client)
{
struct wm8711_priv *wm8711;
int ret;
wm8711 = devm_kzalloc(&client->dev, sizeof(struct wm8711_priv),
GFP_KERNEL);
if (wm8711 == NULL)
return -ENOMEM;
wm8711->regmap = devm_regmap_init_i2c(client, &wm8711_regmap);
if (IS_ERR(wm8711->regmap))
return PTR_ERR(wm8711->regmap);
i2c_set_clientdata(client, wm8711);
ret = devm_snd_soc_register_component(&client->dev,
&soc_component_dev_wm8711, &wm8711_dai, 1);
return ret;
}
static const struct i2c_device_id wm8711_i2c_id[] = {
{ "wm8711", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id);
static struct i2c_driver wm8711_i2c_driver = {
.driver = {
.name = "wm8711",
.of_match_table = wm8711_of_match,
},
.probe = wm8711_i2c_probe,
.id_table = wm8711_i2c_id,
};
#endif
static int __init wm8711_modinit(void)
{
int ret;
#if IS_ENABLED(CONFIG_I2C)
ret = i2c_add_driver(&wm8711_i2c_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n",
ret);
}
#endif
#if defined(CONFIG_SPI_MASTER)
ret = spi_register_driver(&wm8711_spi_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register WM8711 SPI driver: %d\n",
ret);
}
#endif
return 0;
}
module_init(wm8711_modinit);
static void __exit wm8711_exit(void)
{
#if IS_ENABLED(CONFIG_I2C)
i2c_del_driver(&wm8711_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
spi_unregister_driver(&wm8711_spi_driver);
#endif
}
module_exit(wm8711_exit);
MODULE_DESCRIPTION("ASoC WM8711 driver");
MODULE_AUTHOR("Mike Arthur");
MODULE_LICENSE("GPL");
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