ASoC: Add WM8711 CODEC driver
The WM8711 or WM8711L (WM8711/L) is a low power stereo DAC with an integrated headphone driver. The WM8711/L is designed specifically for portable MP3 audio and speech players. The WM8711/L is also ideal for MD, CD machines and DAT players. Signed-off-by: Mike Arthur <Mike.Arthur@wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mike Arthur
Mark Brown
Родитель
07a2039b8e
Коммит
bd6d417743
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@ -29,6 +29,7 @@ config SND_SOC_ALL_CODECS
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select SND_SOC_WM8400 if MFD_WM8400
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select SND_SOC_WM8510 if SND_SOC_I2C_AND_SPI
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select SND_SOC_WM8580 if I2C
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select SND_SOC_WM8711 if I2C
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select SND_SOC_WM8728 if SND_SOC_I2C_AND_SPI
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select SND_SOC_WM8731 if SND_SOC_I2C_AND_SPI
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select SND_SOC_WM8750 if SND_SOC_I2C_AND_SPI
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@ -120,6 +121,9 @@ config SND_SOC_WM8510
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config SND_SOC_WM8580
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tristate
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config SND_SOC_WM8711
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tristate
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config SND_SOC_WM8728
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tristate
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@ -17,6 +17,7 @@ snd-soc-wm8350-objs := wm8350.o
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snd-soc-wm8400-objs := wm8400.o
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snd-soc-wm8510-objs := wm8510.o
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snd-soc-wm8580-objs := wm8580.o
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snd-soc-wm8711-objs := wm8711.o
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snd-soc-wm8728-objs := wm8728.o
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snd-soc-wm8731-objs := wm8731.o
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snd-soc-wm8750-objs := wm8750.o
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@ -48,6 +49,7 @@ obj-$(CONFIG_SND_SOC_WM8350) += snd-soc-wm8350.o
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obj-$(CONFIG_SND_SOC_WM8400) += snd-soc-wm8400.o
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obj-$(CONFIG_SND_SOC_WM8510) += snd-soc-wm8510.o
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obj-$(CONFIG_SND_SOC_WM8580) += snd-soc-wm8580.o
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obj-$(CONFIG_SND_SOC_WM8711) += snd-soc-wm8711.o
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obj-$(CONFIG_SND_SOC_WM8728) += snd-soc-wm8728.o
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obj-$(CONFIG_SND_SOC_WM8731) += snd-soc-wm8731.o
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obj-$(CONFIG_SND_SOC_WM8750) += snd-soc-wm8750.o
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@ -0,0 +1,685 @@
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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 <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 <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/initval.h>
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#include "wm8711.h"
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#define AUDIO_NAME "wm8711"
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#define WM8711_VERSION "0.3"
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/* codec private data */
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struct wm8711_priv {
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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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/*
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* read wm8711 register cache
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*/
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static inline unsigned int wm8711_read_reg_cache(struct snd_soc_codec *codec,
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unsigned int reg)
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{
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u16 *cache = codec->reg_cache;
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if (reg == WM8711_RESET)
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return 0;
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if (reg >= WM8711_CACHEREGNUM)
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return -1;
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return cache[reg];
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}
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/*
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* write wm8711 register cache
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*/
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static inline void wm8711_write_reg_cache(struct snd_soc_codec *codec,
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u16 reg, unsigned int value)
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{
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u16 *cache = codec->reg_cache;
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if (reg >= WM8711_CACHEREGNUM)
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return;
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cache[reg] = value;
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}
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/*
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* write to the WM8711 register space
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*/
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static int wm8711_write(struct snd_soc_codec *codec, unsigned int reg,
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unsigned int value)
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{
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u8 data[2];
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/* data is
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* D15..D9 WM8753 register offset
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* D8...D0 register data
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*/
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data[0] = (reg << 1) | ((value >> 8) & 0x0001);
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data[1] = value & 0x00ff;
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wm8711_write_reg_cache(codec, reg, value);
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if (codec->hw_write(codec->control_data, data, 2) == 2)
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return 0;
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else
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return -EIO;
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}
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#define wm8711_reset(c) wm8711_write(c, WM8711_RESET, 0)
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static const struct snd_kcontrol_new wm8711_snd_controls[] = {
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SOC_DOUBLE_R("Master Playback Volume", WM8711_LOUT1V, WM8711_ROUT1V,
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0, 127, 0),
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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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/* add non dapm controls */
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static int wm8711_add_controls(struct snd_soc_codec *codec)
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{
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int err, i;
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for (i = 0; i < ARRAY_SIZE(wm8711_snd_controls); i++) {
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err = snd_ctl_add(codec->card,
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snd_soc_cnew(&wm8711_snd_controls[i], codec,
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NULL));
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if (err < 0)
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return err;
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}
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return 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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snd_soc_dapm_new_widgets(codec);
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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 = codec->private_data;
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u16 iface = wm8711_read_reg_cache(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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wm8711_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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wm8711_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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wm8711_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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wm8711_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 = wm8711_read_reg_cache(codec, WM8711_APDIGI) & 0xfff7;
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if (mute)
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wm8711_write(codec, WM8711_APDIGI, mute_reg | 0x8);
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else
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wm8711_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 = codec->private_data;
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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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wm8711_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 = wm8711_read_reg_cache(codec, WM8711_PWR) & 0xff7f;
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switch (level) {
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case SND_SOC_BIAS_ON:
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wm8711_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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wm8711_write(codec, WM8711_PWR, reg | 0x0040);
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break;
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case SND_SOC_BIAS_OFF:
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wm8711_write(codec, WM8711_ACTIVE, 0x0);
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wm8711_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 | SNDRV_PCM_RATE_11025 |\
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SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
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SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
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SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
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SNDRV_PCM_RATE_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",
|
||||
.playback = {
|
||||
.stream_name = "Playback",
|
||||
.channels_min = 1,
|
||||
.channels_max = 2,
|
||||
.rates = WM8711_RATES,
|
||||
.formats = WM8711_FORMATS,},
|
||||
.ops = &wm8711_ops,
|
||||
};
|
||||
EXPORT_SYMBOL_GPL(wm8711_dai);
|
||||
|
||||
static int wm8711_suspend(struct platform_device *pdev, pm_message_t state)
|
||||
{
|
||||
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
||||
struct snd_soc_codec *codec = socdev->card->codec;
|
||||
|
||||
wm8711_write(codec, WM8711_ACTIVE, 0x0);
|
||||
wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int wm8711_resume(struct platform_device *pdev)
|
||||
{
|
||||
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
||||
struct snd_soc_codec *codec = socdev->card->codec;
|
||||
int i;
|
||||
u8 data[2];
|
||||
u16 *cache = codec->reg_cache;
|
||||
|
||||
/* Sync reg_cache with the hardware */
|
||||
for (i = 0; i < ARRAY_SIZE(wm8711_reg); i++) {
|
||||
data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
|
||||
data[1] = cache[i] & 0x00ff;
|
||||
codec->hw_write(codec->control_data, data, 2);
|
||||
}
|
||||
wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
||||
wm8711_set_bias_level(codec, codec->suspend_bias_level);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* initialise the WM8711 driver
|
||||
* register the mixer and dsp interfaces with the kernel
|
||||
*/
|
||||
static int wm8711_init(struct snd_soc_device *socdev)
|
||||
{
|
||||
struct snd_soc_codec *codec = socdev->card->codec;
|
||||
int reg, ret = 0;
|
||||
|
||||
codec->name = "WM8711";
|
||||
codec->owner = THIS_MODULE;
|
||||
codec->read = wm8711_read_reg_cache;
|
||||
codec->write = wm8711_write;
|
||||
codec->set_bias_level = wm8711_set_bias_level;
|
||||
codec->dai = &wm8711_dai;
|
||||
codec->num_dai = 1;
|
||||
codec->reg_cache_size = ARRAY_SIZE(wm8711_reg);
|
||||
codec->reg_cache = kmemdup(wm8711_reg, sizeof(wm8711_reg), GFP_KERNEL);
|
||||
|
||||
if (codec->reg_cache == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
wm8711_reset(codec);
|
||||
|
||||
/* register pcms */
|
||||
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
|
||||
if (ret < 0) {
|
||||
printk(KERN_ERR "wm8711: failed to create pcms\n");
|
||||
goto pcm_err;
|
||||
}
|
||||
|
||||
/* power on device */
|
||||
wm8711_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
||||
|
||||
/* set the update bits */
|
||||
reg = wm8711_read_reg_cache(codec, WM8711_LOUT1V);
|
||||
wm8711_write(codec, WM8711_LOUT1V, reg | 0x0100);
|
||||
reg = wm8711_read_reg_cache(codec, WM8711_ROUT1V);
|
||||
wm8711_write(codec, WM8711_ROUT1V, reg | 0x0100);
|
||||
|
||||
wm8711_add_controls(codec);
|
||||
wm8711_add_widgets(codec);
|
||||
ret = snd_soc_init_card(socdev);
|
||||
if (ret < 0) {
|
||||
printk(KERN_ERR "wm8711: failed to register card\n");
|
||||
goto card_err;
|
||||
}
|
||||
return ret;
|
||||
|
||||
card_err:
|
||||
snd_soc_free_pcms(socdev);
|
||||
snd_soc_dapm_free(socdev);
|
||||
pcm_err:
|
||||
kfree(codec->reg_cache);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static struct snd_soc_device *wm8711_socdev;
|
||||
|
||||
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
||||
|
||||
/*
|
||||
* WM8711 2 wire address is determined by GPIO5
|
||||
* state during powerup.
|
||||
* low = 0x1a
|
||||
* high = 0x1b
|
||||
*/
|
||||
#define I2C_DRIVERID_WM8711 0xfefe /* liam - need a proper id */
|
||||
|
||||
static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
|
||||
|
||||
/* Magic definition of all other variables and things */
|
||||
I2C_CLIENT_INSMOD;
|
||||
|
||||
static struct i2c_driver wm8711_i2c_driver;
|
||||
static struct i2c_client client_template;
|
||||
|
||||
/* If the i2c layer weren't so broken, we could pass this kind of data
|
||||
around */
|
||||
|
||||
static int wm8711_codec_probe(struct i2c_adapter *adap, int addr, int kind)
|
||||
{
|
||||
struct snd_soc_device *socdev = wm8711_socdev;
|
||||
struct wm8711_setup_data *setup = socdev->codec_data;
|
||||
struct snd_soc_codec *codec = socdev->card->codec;
|
||||
struct i2c_client *i2c;
|
||||
int ret;
|
||||
|
||||
if (addr != setup->i2c_address)
|
||||
return -ENODEV;
|
||||
|
||||
client_template.adapter = adap;
|
||||
client_template.addr = addr;
|
||||
|
||||
i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
|
||||
if (i2c == NULL) {
|
||||
kfree(codec);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
i2c_set_clientdata(i2c, codec);
|
||||
|
||||
codec->control_data = i2c;
|
||||
|
||||
ret = i2c_attach_client(i2c);
|
||||
if (ret < 0) {
|
||||
pr_err("failed to attach codec at addr %x\n", addr);
|
||||
goto err;
|
||||
}
|
||||
|
||||
ret = wm8711_init(socdev);
|
||||
if (ret < 0) {
|
||||
pr_err("failed to initialise WM8711\n");
|
||||
goto err;
|
||||
}
|
||||
return ret;
|
||||
|
||||
err:
|
||||
kfree(codec);
|
||||
kfree(i2c);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int wm8711_i2c_detach(struct i2c_client *client)
|
||||
{
|
||||
struct snd_soc_codec *codec = i2c_get_clientdata(client);
|
||||
|
||||
i2c_detach_client(client);
|
||||
kfree(codec->reg_cache);
|
||||
kfree(client);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int wm8711_i2c_attach(struct i2c_adapter *adap)
|
||||
{
|
||||
return i2c_probe(adap, &addr_data, wm8711_codec_probe);
|
||||
}
|
||||
|
||||
/* corgi i2c codec control layer */
|
||||
static struct i2c_driver wm8711_i2c_driver = {
|
||||
.driver = {
|
||||
.name = "WM8711 I2C Codec",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.id = I2C_DRIVERID_WM8711,
|
||||
.attach_adapter = wm8711_i2c_attach,
|
||||
.detach_client = wm8711_i2c_detach,
|
||||
.command = NULL,
|
||||
};
|
||||
|
||||
static struct i2c_client client_template = {
|
||||
.name = "WM8711",
|
||||
.driver = &wm8711_i2c_driver,
|
||||
};
|
||||
#endif
|
||||
|
||||
static int wm8711_probe(struct platform_device *pdev)
|
||||
{
|
||||
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
||||
struct wm8711_setup_data *setup;
|
||||
struct snd_soc_codec *codec;
|
||||
struct wm8711_priv *wm8711;
|
||||
int ret = 0;
|
||||
|
||||
pr_info("WM8711 Audio Codec %s", WM8711_VERSION);
|
||||
|
||||
setup = socdev->codec_data;
|
||||
codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
|
||||
if (codec == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
wm8711 = kzalloc(sizeof(struct wm8711_priv), GFP_KERNEL);
|
||||
if (wm8711 == NULL) {
|
||||
kfree(codec);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
codec->private_data = wm8711;
|
||||
socdev->card->codec = codec;
|
||||
mutex_init(&codec->mutex);
|
||||
INIT_LIST_HEAD(&codec->dapm_widgets);
|
||||
INIT_LIST_HEAD(&codec->dapm_paths);
|
||||
|
||||
wm8711_socdev = socdev;
|
||||
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
||||
if (setup->i2c_address) {
|
||||
normal_i2c[0] = setup->i2c_address;
|
||||
codec->hw_write = (hw_write_t)i2c_master_send;
|
||||
ret = i2c_add_driver(&wm8711_i2c_driver);
|
||||
if (ret != 0)
|
||||
printk(KERN_ERR "can't add i2c driver");
|
||||
}
|
||||
#else
|
||||
/* Add other interfaces here */
|
||||
#endif
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* power down chip */
|
||||
static int wm8711_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
||||
struct snd_soc_codec *codec = socdev->card->codec;
|
||||
|
||||
if (codec->control_data)
|
||||
wm8711_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
||||
|
||||
snd_soc_free_pcms(socdev);
|
||||
snd_soc_dapm_free(socdev);
|
||||
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
|
||||
i2c_del_driver(&wm8711_i2c_driver);
|
||||
#endif
|
||||
kfree(codec->private_data);
|
||||
kfree(codec);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
struct snd_soc_codec_device soc_codec_dev_wm8711 = {
|
||||
.probe = wm8711_probe,
|
||||
.remove = wm8711_remove,
|
||||
.suspend = wm8711_suspend,
|
||||
.resume = wm8711_resume,
|
||||
};
|
||||
EXPORT_SYMBOL_GPL(soc_codec_dev_wm8711);
|
||||
|
||||
static int __init wm8711_modinit(void)
|
||||
{
|
||||
return snd_soc_register_dai(&wm8711_dai);
|
||||
}
|
||||
module_init(wm8711_modinit);
|
||||
|
||||
static void __exit wm8711_exit(void)
|
||||
{
|
||||
snd_soc_unregister_dai(&wm8711_dai);
|
||||
}
|
||||
module_exit(wm8711_exit);
|
||||
|
||||
MODULE_DESCRIPTION("ASoC WM8711 driver");
|
||||
MODULE_AUTHOR("Mike Arthur");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
@ -0,0 +1,42 @@
|
|||
/*
|
||||
* wm8711.h -- WM8711 Soc Audio driver
|
||||
*
|
||||
* Copyright 2006 Wolfson Microelectronics
|
||||
*
|
||||
* Author: Mike Arthur <linux@wolfsonmicro.com>
|
||||
*
|
||||
* Based on wm8731.h
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 as
|
||||
* published by the Free Software Foundation.
|
||||
*/
|
||||
|
||||
#ifndef _WM8711_H
|
||||
#define _WM8711_H
|
||||
|
||||
/* WM8711 register space */
|
||||
|
||||
#define WM8711_LOUT1V 0x02
|
||||
#define WM8711_ROUT1V 0x03
|
||||
#define WM8711_APANA 0x04
|
||||
#define WM8711_APDIGI 0x05
|
||||
#define WM8711_PWR 0x06
|
||||
#define WM8711_IFACE 0x07
|
||||
#define WM8711_SRATE 0x08
|
||||
#define WM8711_ACTIVE 0x09
|
||||
#define WM8711_RESET 0x0f
|
||||
|
||||
#define WM8711_CACHEREGNUM 8
|
||||
|
||||
#define WM8711_SYSCLK 0
|
||||
#define WM8711_DAI 0
|
||||
|
||||
struct wm8711_setup_data {
|
||||
unsigned short i2c_address;
|
||||
};
|
||||
|
||||
extern struct snd_soc_dai wm8711_dai;
|
||||
extern struct snd_soc_codec_device soc_codec_dev_wm8711;
|
||||
|
||||
#endif
|
||||
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