forked from luck/tmp_suning_uos_patched
635 lines
14 KiB
C
635 lines
14 KiB
C
/*
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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 <linux@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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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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/platform_device.h>
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#include <linux/spi/spi.h>
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#include <linux/slab.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/soc-dapm.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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static struct snd_soc_codec *wm8711_codec;
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/* codec private data */
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struct wm8711_priv {
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struct snd_soc_codec codec;
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u16 reg_cache[WM8711_CACHEREGNUM];
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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 u16 wm8711_reg[WM8711_CACHEREGNUM] = {
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0x0079, 0x0079, 0x000a, 0x0008,
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0x009f, 0x000a, 0x0000, 0x0000
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};
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#define wm8711_reset(c) snd_soc_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 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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static int wm8711_add_widgets(struct snd_soc_codec *codec)
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{
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snd_soc_dapm_new_controls(codec, wm8711_dapm_widgets,
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ARRAY_SIZE(wm8711_dapm_widgets));
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snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
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return 0;
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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_codec *codec = dai->codec;
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struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
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u16 iface = snd_soc_read(codec, WM8711_IFACE) & 0xfffc;
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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_write(codec, WM8711_SRATE, srate);
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/* bit size */
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switch (params_format(params)) {
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case SNDRV_PCM_FORMAT_S16_LE:
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break;
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case SNDRV_PCM_FORMAT_S20_3LE:
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iface |= 0x0004;
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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iface |= 0x0008;
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break;
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}
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snd_soc_write(codec, 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_codec *codec = dai->codec;
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/* set active */
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snd_soc_write(codec, 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_codec *codec = dai->codec;
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/* deactivate */
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if (!codec->active) {
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udelay(50);
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snd_soc_write(codec, 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)
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{
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struct snd_soc_codec *codec = dai->codec;
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u16 mute_reg = snd_soc_read(codec, WM8711_APDIGI) & 0xfff7;
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if (mute)
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snd_soc_write(codec, WM8711_APDIGI, mute_reg | 0x8);
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else
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snd_soc_write(codec, 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_codec *codec = codec_dai->codec;
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struct wm8711_priv *wm8711 = snd_soc_codec_get_drvdata(codec);
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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_codec *codec = codec_dai->codec;
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u16 iface = 0;
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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_write(codec, 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_codec *codec,
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enum snd_soc_bias_level level)
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{
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u16 reg = snd_soc_read(codec, WM8711_PWR) & 0xff7f;
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switch (level) {
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case SND_SOC_BIAS_ON:
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snd_soc_write(codec, 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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snd_soc_write(codec, WM8711_PWR, reg | 0x0040);
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break;
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case SND_SOC_BIAS_OFF:
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snd_soc_write(codec, WM8711_ACTIVE, 0x0);
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snd_soc_write(codec, WM8711_PWR, 0xffff);
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break;
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}
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codec->bias_level = level;
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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 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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.digital_mute = 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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};
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struct snd_soc_dai wm8711_dai = {
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.name = "WM8711",
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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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EXPORT_SYMBOL_GPL(wm8711_dai);
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static int wm8711_suspend(struct platform_device *pdev, pm_message_t state)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec = socdev->card->codec;
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snd_soc_write(codec, WM8711_ACTIVE, 0x0);
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wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
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return 0;
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}
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static int wm8711_resume(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec = socdev->card->codec;
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int i;
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u8 data[2];
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u16 *cache = codec->reg_cache;
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/* Sync reg_cache with the hardware */
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for (i = 0; i < ARRAY_SIZE(wm8711_reg); i++) {
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data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
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data[1] = cache[i] & 0x00ff;
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codec->hw_write(codec->control_data, data, 2);
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}
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wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
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return 0;
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}
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static int wm8711_probe(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec;
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int ret = 0;
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if (wm8711_codec == NULL) {
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dev_err(&pdev->dev, "Codec device not registered\n");
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return -ENODEV;
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}
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socdev->card->codec = wm8711_codec;
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codec = wm8711_codec;
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/* register pcms */
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ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
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if (ret < 0) {
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dev_err(codec->dev, "failed to create pcms: %d\n", ret);
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goto pcm_err;
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}
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snd_soc_add_controls(codec, wm8711_snd_controls,
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ARRAY_SIZE(wm8711_snd_controls));
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wm8711_add_widgets(codec);
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return ret;
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pcm_err:
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return ret;
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}
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/* power down chip */
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static int wm8711_remove(struct platform_device *pdev)
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{
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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snd_soc_free_pcms(socdev);
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snd_soc_dapm_free(socdev);
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return 0;
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}
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struct snd_soc_codec_device soc_codec_dev_wm8711 = {
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.probe = wm8711_probe,
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.remove = wm8711_remove,
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.suspend = wm8711_suspend,
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.resume = wm8711_resume,
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};
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EXPORT_SYMBOL_GPL(soc_codec_dev_wm8711);
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static int wm8711_register(struct wm8711_priv *wm8711,
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enum snd_soc_control_type control)
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{
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int ret;
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struct snd_soc_codec *codec = &wm8711->codec;
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u16 reg;
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if (wm8711_codec) {
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dev_err(codec->dev, "Another WM8711 is registered\n");
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return -EINVAL;
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}
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mutex_init(&codec->mutex);
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INIT_LIST_HEAD(&codec->dapm_widgets);
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INIT_LIST_HEAD(&codec->dapm_paths);
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snd_soc_codec_set_drvdata(codec, wm8711);
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codec->name = "WM8711";
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codec->owner = THIS_MODULE;
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codec->bias_level = SND_SOC_BIAS_OFF;
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codec->set_bias_level = wm8711_set_bias_level;
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codec->dai = &wm8711_dai;
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codec->num_dai = 1;
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codec->reg_cache_size = WM8711_CACHEREGNUM;
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codec->reg_cache = &wm8711->reg_cache;
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memcpy(codec->reg_cache, wm8711_reg, sizeof(wm8711_reg));
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ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
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if (ret < 0) {
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dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
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goto err;
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}
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ret = wm8711_reset(codec);
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if (ret < 0) {
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dev_err(codec->dev, "Failed to issue reset\n");
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goto err;
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}
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wm8711_dai.dev = codec->dev;
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wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
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/* Latch the update bits */
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reg = snd_soc_read(codec, WM8711_LOUT1V);
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snd_soc_write(codec, WM8711_LOUT1V, reg | 0x0100);
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reg = snd_soc_read(codec, WM8711_ROUT1V);
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snd_soc_write(codec, WM8711_ROUT1V, reg | 0x0100);
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wm8711_codec = codec;
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ret = snd_soc_register_codec(codec);
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if (ret != 0) {
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dev_err(codec->dev, "Failed to register codec: %d\n", ret);
|
|
goto err;
|
|
}
|
|
|
|
ret = snd_soc_register_dai(&wm8711_dai);
|
|
if (ret != 0) {
|
|
dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
|
|
goto err_codec;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_codec:
|
|
snd_soc_unregister_codec(codec);
|
|
err:
|
|
kfree(wm8711);
|
|
return ret;
|
|
}
|
|
|
|
static void wm8711_unregister(struct wm8711_priv *wm8711)
|
|
{
|
|
wm8711_set_bias_level(&wm8711->codec, SND_SOC_BIAS_OFF);
|
|
snd_soc_unregister_dai(&wm8711_dai);
|
|
snd_soc_unregister_codec(&wm8711->codec);
|
|
kfree(wm8711);
|
|
wm8711_codec = NULL;
|
|
}
|
|
|
|
#if defined(CONFIG_SPI_MASTER)
|
|
static int __devinit wm8711_spi_probe(struct spi_device *spi)
|
|
{
|
|
struct snd_soc_codec *codec;
|
|
struct wm8711_priv *wm8711;
|
|
|
|
wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
|
|
if (wm8711 == NULL)
|
|
return -ENOMEM;
|
|
|
|
codec = &wm8711->codec;
|
|
codec->control_data = spi;
|
|
codec->dev = &spi->dev;
|
|
|
|
dev_set_drvdata(&spi->dev, wm8711);
|
|
|
|
return wm8711_register(wm8711, SND_SOC_SPI);
|
|
}
|
|
|
|
static int __devexit wm8711_spi_remove(struct spi_device *spi)
|
|
{
|
|
struct wm8711_priv *wm8711 = dev_get_drvdata(&spi->dev);
|
|
|
|
wm8711_unregister(wm8711);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct spi_driver wm8711_spi_driver = {
|
|
.driver = {
|
|
.name = "wm8711",
|
|
.bus = &spi_bus_type,
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = wm8711_spi_probe,
|
|
.remove = __devexit_p(wm8711_spi_remove),
|
|
};
|
|
#endif /* CONFIG_SPI_MASTER */
|
|
|
|
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
|
static __devinit int wm8711_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct wm8711_priv *wm8711;
|
|
struct snd_soc_codec *codec;
|
|
|
|
wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
|
|
if (wm8711 == NULL)
|
|
return -ENOMEM;
|
|
|
|
codec = &wm8711->codec;
|
|
codec->hw_write = (hw_write_t)i2c_master_send;
|
|
|
|
i2c_set_clientdata(i2c, wm8711);
|
|
codec->control_data = i2c;
|
|
|
|
codec->dev = &i2c->dev;
|
|
|
|
return wm8711_register(wm8711, SND_SOC_I2C);
|
|
}
|
|
|
|
static __devexit int wm8711_i2c_remove(struct i2c_client *client)
|
|
{
|
|
struct wm8711_priv *wm8711 = i2c_get_clientdata(client);
|
|
wm8711_unregister(wm8711);
|
|
return 0;
|
|
}
|
|
|
|
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 I2C Codec",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = wm8711_i2c_probe,
|
|
.remove = __devexit_p(wm8711_i2c_remove),
|
|
.id_table = wm8711_i2c_id,
|
|
};
|
|
#endif
|
|
|
|
static int __init wm8711_modinit(void)
|
|
{
|
|
int ret;
|
|
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
|
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 defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
|
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");
|