507 lines
12 KiB
C
507 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* wm8711.c -- WM8711 ALSA SoC Audio driver
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*
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* Copyright 2006 Wolfson Microelectronics
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*
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* Author: Mike Arthur <Mike.Arthur@wolfsonmicro.com>
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*
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* Based on wm8731.c by Richard Purdie
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include <linux/spi/spi.h>
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#include <linux/slab.h>
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#include <linux/of_device.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/tlv.h>
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#include <sound/initval.h>
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#include "wm8711.h"
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/* codec private data */
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struct wm8711_priv {
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struct regmap *regmap;
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unsigned int sysclk;
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};
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/*
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* wm8711 register cache
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* We can't read the WM8711 register space when we are
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* using 2 wire for device control, so we cache them instead.
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* There is no point in caching the reset register
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*/
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static const struct reg_default wm8711_reg_defaults[] = {
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{ 0, 0x0079 }, { 1, 0x0079 }, { 2, 0x000a }, { 3, 0x0008 },
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{ 4, 0x009f }, { 5, 0x000a }, { 6, 0x0000 }, { 7, 0x0000 },
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};
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static bool wm8711_volatile(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case WM8711_RESET:
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return true;
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default:
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return false;
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}
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}
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#define wm8711_reset(c) snd_soc_component_write(c, WM8711_RESET, 0)
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static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
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static const struct snd_kcontrol_new wm8711_snd_controls[] = {
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SOC_DOUBLE_R_TLV("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V,
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0, 127, 0, out_tlv),
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SOC_DOUBLE_R("Master Playback ZC Switch", WM8711_LOUT1V, WM8711_ROUT1V,
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7, 1, 0),
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};
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/* Output Mixer */
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static const struct snd_kcontrol_new wm8711_output_mixer_controls[] = {
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SOC_DAPM_SINGLE("Line Bypass Switch", WM8711_APANA, 3, 1, 0),
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SOC_DAPM_SINGLE("HiFi Playback Switch", WM8711_APANA, 4, 1, 0),
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};
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static const struct snd_soc_dapm_widget wm8711_dapm_widgets[] = {
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SND_SOC_DAPM_MIXER("Output Mixer", WM8711_PWR, 4, 1,
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&wm8711_output_mixer_controls[0],
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ARRAY_SIZE(wm8711_output_mixer_controls)),
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SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8711_PWR, 3, 1),
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SND_SOC_DAPM_OUTPUT("LOUT"),
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SND_SOC_DAPM_OUTPUT("LHPOUT"),
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SND_SOC_DAPM_OUTPUT("ROUT"),
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SND_SOC_DAPM_OUTPUT("RHPOUT"),
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};
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static const struct snd_soc_dapm_route wm8711_intercon[] = {
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/* output mixer */
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{"Output Mixer", "Line Bypass Switch", "Line Input"},
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{"Output Mixer", "HiFi Playback Switch", "DAC"},
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/* outputs */
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{"RHPOUT", NULL, "Output Mixer"},
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{"ROUT", NULL, "Output Mixer"},
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{"LHPOUT", NULL, "Output Mixer"},
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{"LOUT", NULL, "Output Mixer"},
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};
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struct _coeff_div {
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u32 mclk;
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u32 rate;
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u16 fs;
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u8 sr:4;
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u8 bosr:1;
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u8 usb:1;
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};
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/* codec mclk clock divider coefficients */
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static const struct _coeff_div coeff_div[] = {
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/* 48k */
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{12288000, 48000, 256, 0x0, 0x0, 0x0},
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{18432000, 48000, 384, 0x0, 0x1, 0x0},
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{12000000, 48000, 250, 0x0, 0x0, 0x1},
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/* 32k */
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{12288000, 32000, 384, 0x6, 0x0, 0x0},
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{18432000, 32000, 576, 0x6, 0x1, 0x0},
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{12000000, 32000, 375, 0x6, 0x0, 0x1},
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/* 8k */
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{12288000, 8000, 1536, 0x3, 0x0, 0x0},
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{18432000, 8000, 2304, 0x3, 0x1, 0x0},
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{11289600, 8000, 1408, 0xb, 0x0, 0x0},
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{16934400, 8000, 2112, 0xb, 0x1, 0x0},
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{12000000, 8000, 1500, 0x3, 0x0, 0x1},
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/* 96k */
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{12288000, 96000, 128, 0x7, 0x0, 0x0},
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{18432000, 96000, 192, 0x7, 0x1, 0x0},
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{12000000, 96000, 125, 0x7, 0x0, 0x1},
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/* 44.1k */
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{11289600, 44100, 256, 0x8, 0x0, 0x0},
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{16934400, 44100, 384, 0x8, 0x1, 0x0},
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{12000000, 44100, 272, 0x8, 0x1, 0x1},
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/* 88.2k */
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{11289600, 88200, 128, 0xf, 0x0, 0x0},
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{16934400, 88200, 192, 0xf, 0x1, 0x0},
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{12000000, 88200, 136, 0xf, 0x1, 0x1},
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};
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static inline int get_coeff(int mclk, int rate)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
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if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
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return i;
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}
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return 0;
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}
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static int wm8711_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_component *component = dai->component;
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struct wm8711_priv *wm8711 = snd_soc_component_get_drvdata(component);
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u16 iface = snd_soc_component_read(component, WM8711_IFACE) & 0xfff3;
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int i = get_coeff(wm8711->sysclk, params_rate(params));
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u16 srate = (coeff_div[i].sr << 2) |
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(coeff_div[i].bosr << 1) | coeff_div[i].usb;
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snd_soc_component_write(component, WM8711_SRATE, srate);
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/* bit size */
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switch (params_width(params)) {
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case 16:
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break;
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case 20:
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iface |= 0x0004;
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break;
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case 24:
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iface |= 0x0008;
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break;
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}
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snd_soc_component_write(component, WM8711_IFACE, iface);
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return 0;
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}
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static int wm8711_pcm_prepare(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_component *component = dai->component;
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/* set active */
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snd_soc_component_write(component, WM8711_ACTIVE, 0x0001);
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return 0;
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}
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static void wm8711_shutdown(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_component *component = dai->component;
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/* deactivate */
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if (!snd_soc_component_active(component)) {
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udelay(50);
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snd_soc_component_write(component, WM8711_ACTIVE, 0x0);
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}
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}
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static int wm8711_mute(struct snd_soc_dai *dai, int mute, int direction)
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{
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struct snd_soc_component *component = dai->component;
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u16 mute_reg = snd_soc_component_read(component, WM8711_APDIGI) & 0xfff7;
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if (mute)
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snd_soc_component_write(component, WM8711_APDIGI, mute_reg | 0x8);
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else
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snd_soc_component_write(component, WM8711_APDIGI, mute_reg);
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return 0;
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}
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static int wm8711_set_dai_sysclk(struct snd_soc_dai *codec_dai,
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int clk_id, unsigned int freq, int dir)
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{
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struct snd_soc_component *component = codec_dai->component;
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struct wm8711_priv *wm8711 = snd_soc_component_get_drvdata(component);
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switch (freq) {
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case 11289600:
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case 12000000:
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case 12288000:
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case 16934400:
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case 18432000:
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wm8711->sysclk = freq;
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return 0;
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}
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return -EINVAL;
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}
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static int wm8711_set_dai_fmt(struct snd_soc_dai *codec_dai,
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unsigned int fmt)
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{
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struct snd_soc_component *component = codec_dai->component;
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u16 iface = snd_soc_component_read(component, WM8711_IFACE) & 0x000c;
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/* set master/slave audio interface */
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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case SND_SOC_DAIFMT_CBM_CFM:
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iface |= 0x0040;
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break;
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case SND_SOC_DAIFMT_CBS_CFS:
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break;
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default:
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return -EINVAL;
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}
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/* interface format */
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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iface |= 0x0002;
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break;
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case SND_SOC_DAIFMT_RIGHT_J:
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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iface |= 0x0001;
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break;
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case SND_SOC_DAIFMT_DSP_A:
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iface |= 0x0003;
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break;
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case SND_SOC_DAIFMT_DSP_B:
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iface |= 0x0013;
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break;
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default:
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return -EINVAL;
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}
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/* clock inversion */
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_NF:
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break;
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case SND_SOC_DAIFMT_IB_IF:
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iface |= 0x0090;
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break;
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case SND_SOC_DAIFMT_IB_NF:
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iface |= 0x0080;
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break;
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case SND_SOC_DAIFMT_NB_IF:
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iface |= 0x0010;
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break;
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default:
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return -EINVAL;
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}
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/* set iface */
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snd_soc_component_write(component, WM8711_IFACE, iface);
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return 0;
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}
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static int wm8711_set_bias_level(struct snd_soc_component *component,
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enum snd_soc_bias_level level)
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{
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struct wm8711_priv *wm8711 = snd_soc_component_get_drvdata(component);
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u16 reg = snd_soc_component_read(component, WM8711_PWR) & 0xff7f;
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switch (level) {
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case SND_SOC_BIAS_ON:
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snd_soc_component_write(component, WM8711_PWR, reg);
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break;
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case SND_SOC_BIAS_PREPARE:
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break;
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case SND_SOC_BIAS_STANDBY:
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if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF)
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regcache_sync(wm8711->regmap);
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snd_soc_component_write(component, WM8711_PWR, reg | 0x0040);
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break;
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case SND_SOC_BIAS_OFF:
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snd_soc_component_write(component, WM8711_ACTIVE, 0x0);
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snd_soc_component_write(component, WM8711_PWR, 0xffff);
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break;
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}
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return 0;
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}
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#define WM8711_RATES SNDRV_PCM_RATE_8000_96000
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#define WM8711_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
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SNDRV_PCM_FMTBIT_S24_LE)
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static const struct snd_soc_dai_ops wm8711_ops = {
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.prepare = wm8711_pcm_prepare,
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.hw_params = wm8711_hw_params,
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.shutdown = wm8711_shutdown,
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.mute_stream = wm8711_mute,
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.set_sysclk = wm8711_set_dai_sysclk,
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.set_fmt = wm8711_set_dai_fmt,
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.no_capture_mute = 1,
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};
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static struct snd_soc_dai_driver wm8711_dai = {
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.name = "wm8711-hifi",
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.playback = {
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.stream_name = "Playback",
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.channels_min = 1,
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.channels_max = 2,
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.rates = WM8711_RATES,
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.formats = WM8711_FORMATS,
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},
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.ops = &wm8711_ops,
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};
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static int wm8711_probe(struct snd_soc_component *component)
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{
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int ret;
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ret = wm8711_reset(component);
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if (ret < 0) {
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dev_err(component->dev, "Failed to issue reset\n");
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return ret;
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}
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/* Latch the update bits */
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snd_soc_component_update_bits(component, WM8711_LOUT1V, 0x0100, 0x0100);
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snd_soc_component_update_bits(component, WM8711_ROUT1V, 0x0100, 0x0100);
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return ret;
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}
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static const struct snd_soc_component_driver soc_component_dev_wm8711 = {
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.probe = wm8711_probe,
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.set_bias_level = wm8711_set_bias_level,
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.controls = wm8711_snd_controls,
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.num_controls = ARRAY_SIZE(wm8711_snd_controls),
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.dapm_widgets = wm8711_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(wm8711_dapm_widgets),
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.dapm_routes = wm8711_intercon,
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.num_dapm_routes = ARRAY_SIZE(wm8711_intercon),
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.suspend_bias_off = 1,
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.idle_bias_on = 1,
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.use_pmdown_time = 1,
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.endianness = 1,
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};
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static const struct of_device_id wm8711_of_match[] = {
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{ .compatible = "wlf,wm8711", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, wm8711_of_match);
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static const struct regmap_config wm8711_regmap = {
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.reg_bits = 7,
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.val_bits = 9,
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.max_register = WM8711_RESET,
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.reg_defaults = wm8711_reg_defaults,
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.num_reg_defaults = ARRAY_SIZE(wm8711_reg_defaults),
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.cache_type = REGCACHE_RBTREE,
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.volatile_reg = wm8711_volatile,
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};
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#if defined(CONFIG_SPI_MASTER)
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static int wm8711_spi_probe(struct spi_device *spi)
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{
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struct wm8711_priv *wm8711;
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int ret;
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wm8711 = devm_kzalloc(&spi->dev, sizeof(struct wm8711_priv),
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GFP_KERNEL);
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if (wm8711 == NULL)
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return -ENOMEM;
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wm8711->regmap = devm_regmap_init_spi(spi, &wm8711_regmap);
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if (IS_ERR(wm8711->regmap))
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return PTR_ERR(wm8711->regmap);
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spi_set_drvdata(spi, wm8711);
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ret = devm_snd_soc_register_component(&spi->dev,
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&soc_component_dev_wm8711, &wm8711_dai, 1);
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return ret;
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}
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static struct spi_driver wm8711_spi_driver = {
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.driver = {
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.name = "wm8711",
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.of_match_table = wm8711_of_match,
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},
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.probe = wm8711_spi_probe,
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};
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#endif /* CONFIG_SPI_MASTER */
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#if IS_ENABLED(CONFIG_I2C)
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static int wm8711_i2c_probe(struct i2c_client *client)
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{
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struct wm8711_priv *wm8711;
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int ret;
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wm8711 = devm_kzalloc(&client->dev, sizeof(struct wm8711_priv),
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GFP_KERNEL);
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if (wm8711 == NULL)
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return -ENOMEM;
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wm8711->regmap = devm_regmap_init_i2c(client, &wm8711_regmap);
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if (IS_ERR(wm8711->regmap))
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return PTR_ERR(wm8711->regmap);
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i2c_set_clientdata(client, wm8711);
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ret = devm_snd_soc_register_component(&client->dev,
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&soc_component_dev_wm8711, &wm8711_dai, 1);
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return ret;
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}
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static const struct i2c_device_id wm8711_i2c_id[] = {
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{ "wm8711", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, wm8711_i2c_id);
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static struct i2c_driver wm8711_i2c_driver = {
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.driver = {
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.name = "wm8711",
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.of_match_table = wm8711_of_match,
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},
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.probe_new = wm8711_i2c_probe,
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.id_table = wm8711_i2c_id,
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};
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#endif
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static int __init wm8711_modinit(void)
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{
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int ret;
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#if IS_ENABLED(CONFIG_I2C)
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ret = i2c_add_driver(&wm8711_i2c_driver);
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if (ret != 0) {
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printk(KERN_ERR "Failed to register WM8711 I2C driver: %d\n",
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ret);
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}
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#endif
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#if defined(CONFIG_SPI_MASTER)
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ret = spi_register_driver(&wm8711_spi_driver);
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if (ret != 0) {
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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");
|