mirror of https://gitee.com/openkylin/linux.git
ASoC: WM8770: Initial driver
The WM8770 is a high performance, multi-channel audio codec. The WM8770 is ideal for surround sound processing applications for home hi-fi, automotive and other audio visual equipment. Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Dimitris Papastamos
Mark Brown
parent
3a45b8672d
commit
c046fd4dd6
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@ -58,6 +58,7 @@ config SND_SOC_ALL_CODECS
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select SND_SOC_WM8741 if SND_SOC_I2C_AND_SPI
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select SND_SOC_WM8750 if SND_SOC_I2C_AND_SPI
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select SND_SOC_WM8753 if SND_SOC_I2C_AND_SPI
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select SND_SOC_WM8770 if SPI_MASTER
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select SND_SOC_WM8776 if SND_SOC_I2C_AND_SPI
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select SND_SOC_WM8804 if SND_SOC_I2C_AND_SPI
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select SND_SOC_WM8900 if I2C
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@ -244,6 +245,9 @@ config SND_SOC_WM8750
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config SND_SOC_WM8753
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tristate
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config SND_SOC_WM8770
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tristate
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config SND_SOC_WM8776
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tristate
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@ -42,6 +42,7 @@ snd-soc-wm8731-objs := wm8731.o
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snd-soc-wm8741-objs := wm8741.o
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snd-soc-wm8750-objs := wm8750.o
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snd-soc-wm8753-objs := wm8753.o
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snd-soc-wm8770-objs := wm8770.o
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snd-soc-wm8776-objs := wm8776.o
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snd-soc-wm8804-objs := wm8804.o
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snd-soc-wm8900-objs := wm8900.o
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@ -118,6 +119,7 @@ obj-$(CONFIG_SND_SOC_WM8731) += snd-soc-wm8731.o
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obj-$(CONFIG_SND_SOC_WM8741) += snd-soc-wm8741.o
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obj-$(CONFIG_SND_SOC_WM8750) += snd-soc-wm8750.o
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obj-$(CONFIG_SND_SOC_WM8753) += snd-soc-wm8753.o
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obj-$(CONFIG_SND_SOC_WM8770) += snd-soc-wm8770.o
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obj-$(CONFIG_SND_SOC_WM8776) += snd-soc-wm8776.o
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obj-$(CONFIG_SND_SOC_WM8804) += snd-soc-wm8804.o
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obj-$(CONFIG_SND_SOC_WM8900) += snd-soc-wm8900.o
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@ -0,0 +1,750 @@
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/*
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* wm8770.c -- WM8770 ALSA SoC Audio driver
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*
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* Copyright 2010 Wolfson Microelectronics plc
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*
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* Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
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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/platform_device.h>
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#include <linux/spi/spi.h>
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#include <linux/regulator/consumer.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/initval.h>
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#include <sound/tlv.h>
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#include "wm8770.h"
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#define WM8770_NUM_SUPPLIES 3
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static const char *wm8770_supply_names[WM8770_NUM_SUPPLIES] = {
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"AVDD1",
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"AVDD2",
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"DVDD"
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};
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static const u16 wm8770_reg_defs[WM8770_CACHEREGNUM] = {
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0x7f, 0x7f, 0x7f, 0x7f,
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0x7f, 0x7f, 0x7f, 0x7f,
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0x7f, 0xff, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff,
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0xff, 0xff, 0, 0x90, 0,
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0, 0x22, 0x22, 0x3e,
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0xc, 0xc, 0x100, 0x189,
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0x189, 0x8770
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};
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struct wm8770_priv {
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enum snd_soc_control_type control_type;
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struct regulator_bulk_data supplies[WM8770_NUM_SUPPLIES];
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struct notifier_block disable_nb[WM8770_NUM_SUPPLIES];
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struct snd_soc_codec *codec;
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int sysclk;
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};
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static int vout12supply_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event);
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static int vout34supply_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event);
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/*
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* We can't use the same notifier block for more than one supply and
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* there's no way I can see to get from a callback to the caller
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* except container_of().
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*/
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#define WM8770_REGULATOR_EVENT(n) \
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static int wm8770_regulator_event_##n(struct notifier_block *nb, \
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unsigned long event, void *data) \
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{ \
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struct wm8770_priv *wm8770 = container_of(nb, struct wm8770_priv, \
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disable_nb[n]); \
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if (event & REGULATOR_EVENT_DISABLE) { \
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wm8770->codec->cache_sync = 1; \
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} \
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return 0; \
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}
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WM8770_REGULATOR_EVENT(0)
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WM8770_REGULATOR_EVENT(1)
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WM8770_REGULATOR_EVENT(2)
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static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0);
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static const DECLARE_TLV_DB_SCALE(dac_dig_tlv, -12750, 50, 1);
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static const DECLARE_TLV_DB_SCALE(dac_alg_tlv, -12700, 100, 1);
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static const char *dac_phase_text[][2] = {
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{ "DAC1 Normal", "DAC1 Inverted" },
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{ "DAC2 Normal", "DAC2 Inverted" },
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{ "DAC3 Normal", "DAC3 Inverted" },
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{ "DAC4 Normal", "DAC4 Inverted" },
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};
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static const struct soc_enum dac_phase[] = {
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SOC_ENUM_DOUBLE(WM8770_DACPHASE, 0, 1, 2, dac_phase_text[0]),
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SOC_ENUM_DOUBLE(WM8770_DACPHASE, 2, 3, 2, dac_phase_text[1]),
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SOC_ENUM_DOUBLE(WM8770_DACPHASE, 4, 5, 2, dac_phase_text[2]),
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SOC_ENUM_DOUBLE(WM8770_DACPHASE, 6, 7, 2, dac_phase_text[3]),
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};
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static const struct snd_kcontrol_new wm8770_snd_controls[] = {
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/* global DAC playback controls */
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SOC_SINGLE_TLV("DAC Playback Volume", WM8770_MSDIGVOL, 0, 255, 0,
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dac_dig_tlv),
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SOC_SINGLE("DAC Playback Switch", WM8770_DACMUTE, 4, 1, 1),
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SOC_SINGLE("DAC Playback ZC Switch", WM8770_DACCTRL1, 0, 1, 0),
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/* global VOUT playback controls */
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SOC_SINGLE_TLV("VOUT Playback Volume", WM8770_MSALGVOL, 0, 127, 0,
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dac_alg_tlv),
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SOC_SINGLE("VOUT Playback ZC Switch", WM8770_MSALGVOL, 7, 1, 0),
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/* VOUT1/2/3/4 specific controls */
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SOC_DOUBLE_R_TLV("VOUT1 Playback Volume", WM8770_VOUT1LVOL,
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WM8770_VOUT1RVOL, 0, 127, 0, dac_alg_tlv),
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SOC_DOUBLE_R("VOUT1 Playback ZC Switch", WM8770_VOUT1LVOL,
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WM8770_VOUT1RVOL, 7, 1, 0),
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SOC_DOUBLE_R_TLV("VOUT2 Playback Volume", WM8770_VOUT2LVOL,
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WM8770_VOUT2RVOL, 0, 127, 0, dac_alg_tlv),
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SOC_DOUBLE_R("VOUT2 Playback ZC Switch", WM8770_VOUT2LVOL,
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WM8770_VOUT2RVOL, 7, 1, 0),
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SOC_DOUBLE_R_TLV("VOUT3 Playback Volume", WM8770_VOUT3LVOL,
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WM8770_VOUT3RVOL, 0, 127, 0, dac_alg_tlv),
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SOC_DOUBLE_R("VOUT3 Playback ZC Switch", WM8770_VOUT3LVOL,
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WM8770_VOUT3RVOL, 7, 1, 0),
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SOC_DOUBLE_R_TLV("VOUT4 Playback Volume", WM8770_VOUT4LVOL,
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WM8770_VOUT4RVOL, 0, 127, 0, dac_alg_tlv),
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SOC_DOUBLE_R("VOUT4 Playback ZC Switch", WM8770_VOUT4LVOL,
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WM8770_VOUT4RVOL, 7, 1, 0),
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/* DAC1/2/3/4 specific controls */
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SOC_DOUBLE_R_TLV("DAC1 Playback Volume", WM8770_DAC1LVOL,
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WM8770_DAC1RVOL, 0, 255, 0, dac_dig_tlv),
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SOC_SINGLE("DAC1 Deemphasis Switch", WM8770_DACCTRL2, 0, 1, 0),
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SOC_ENUM("DAC1 Phase", dac_phase[0]),
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SOC_DOUBLE_R_TLV("DAC2 Playback Volume", WM8770_DAC2LVOL,
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WM8770_DAC2RVOL, 0, 255, 0, dac_dig_tlv),
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SOC_SINGLE("DAC2 Deemphasis Switch", WM8770_DACCTRL2, 1, 1, 0),
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SOC_ENUM("DAC2 Phase", dac_phase[1]),
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SOC_DOUBLE_R_TLV("DAC3 Playback Volume", WM8770_DAC3LVOL,
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WM8770_DAC3RVOL, 0, 255, 0, dac_dig_tlv),
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SOC_SINGLE("DAC3 Deemphasis Switch", WM8770_DACCTRL2, 2, 1, 0),
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SOC_ENUM("DAC3 Phase", dac_phase[2]),
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SOC_DOUBLE_R_TLV("DAC4 Playback Volume", WM8770_DAC4LVOL,
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WM8770_DAC4RVOL, 0, 255, 0, dac_dig_tlv),
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SOC_SINGLE("DAC4 Deemphasis Switch", WM8770_DACCTRL2, 3, 1, 0),
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SOC_ENUM("DAC4 Phase", dac_phase[3]),
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/* ADC specific controls */
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SOC_DOUBLE_R_TLV("Capture Volume", WM8770_ADCLCTRL, WM8770_ADCRCTRL,
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0, 31, 0, adc_tlv),
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SOC_DOUBLE_R("Capture Switch", WM8770_ADCLCTRL, WM8770_ADCRCTRL,
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5, 1, 1),
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/* other controls */
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SOC_SINGLE("ADC 128x Oversampling Switch", WM8770_MSTRCTRL, 3, 1, 0),
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SOC_SINGLE("ADC Highpass Filter Switch", WM8770_IFACECTRL, 8, 1, 1)
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};
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static const char *ain_text[] = {
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"AIN1", "AIN2", "AIN3", "AIN4",
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"AIN5", "AIN6", "AIN7", "AIN8"
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};
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static const struct soc_enum ain_enum =
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SOC_ENUM_DOUBLE(WM8770_ADCMUX, 0, 4, 8, ain_text);
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static const struct snd_kcontrol_new ain_mux =
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SOC_DAPM_ENUM("Capture Mux", ain_enum);
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static const struct snd_kcontrol_new vout1_mix_controls[] = {
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SOC_DAPM_SINGLE("DAC1 Switch", WM8770_OUTMUX1, 0, 1, 0),
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SOC_DAPM_SINGLE("AUX1 Switch", WM8770_OUTMUX1, 1, 1, 0),
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SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 2, 1, 0)
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};
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static const struct snd_kcontrol_new vout2_mix_controls[] = {
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SOC_DAPM_SINGLE("DAC2 Switch", WM8770_OUTMUX1, 3, 1, 0),
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SOC_DAPM_SINGLE("AUX2 Switch", WM8770_OUTMUX1, 4, 1, 0),
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SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 5, 1, 0)
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};
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static const struct snd_kcontrol_new vout3_mix_controls[] = {
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SOC_DAPM_SINGLE("DAC3 Switch", WM8770_OUTMUX2, 0, 1, 0),
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SOC_DAPM_SINGLE("AUX3 Switch", WM8770_OUTMUX2, 1, 1, 0),
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SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 2, 1, 0)
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};
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static const struct snd_kcontrol_new vout4_mix_controls[] = {
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SOC_DAPM_SINGLE("DAC4 Switch", WM8770_OUTMUX2, 3, 1, 0),
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SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 4, 1, 0)
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};
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static const struct snd_soc_dapm_widget wm8770_dapm_widgets[] = {
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SND_SOC_DAPM_INPUT("AUX1"),
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SND_SOC_DAPM_INPUT("AUX2"),
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SND_SOC_DAPM_INPUT("AUX3"),
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SND_SOC_DAPM_INPUT("AIN1"),
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SND_SOC_DAPM_INPUT("AIN2"),
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SND_SOC_DAPM_INPUT("AIN3"),
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SND_SOC_DAPM_INPUT("AIN4"),
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SND_SOC_DAPM_INPUT("AIN5"),
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SND_SOC_DAPM_INPUT("AIN6"),
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SND_SOC_DAPM_INPUT("AIN7"),
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SND_SOC_DAPM_INPUT("AIN8"),
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SND_SOC_DAPM_MUX("Capture Mux", WM8770_ADCMUX, 8, 1, &ain_mux),
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SND_SOC_DAPM_ADC("ADC", "Capture", WM8770_PWDNCTRL, 1, 1),
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SND_SOC_DAPM_DAC("DAC1", "Playback", WM8770_PWDNCTRL, 2, 1),
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SND_SOC_DAPM_DAC("DAC2", "Playback", WM8770_PWDNCTRL, 3, 1),
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SND_SOC_DAPM_DAC("DAC3", "Playback", WM8770_PWDNCTRL, 4, 1),
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SND_SOC_DAPM_DAC("DAC4", "Playback", WM8770_PWDNCTRL, 5, 1),
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SND_SOC_DAPM_SUPPLY("VOUT12 Supply", SND_SOC_NOPM, 0, 0,
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vout12supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
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SND_SOC_DAPM_SUPPLY("VOUT34 Supply", SND_SOC_NOPM, 0, 0,
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vout34supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
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SND_SOC_DAPM_MIXER("VOUT1 Mixer", SND_SOC_NOPM, 0, 0,
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vout1_mix_controls, ARRAY_SIZE(vout1_mix_controls)),
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SND_SOC_DAPM_MIXER("VOUT2 Mixer", SND_SOC_NOPM, 0, 0,
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vout2_mix_controls, ARRAY_SIZE(vout2_mix_controls)),
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SND_SOC_DAPM_MIXER("VOUT3 Mixer", SND_SOC_NOPM, 0, 0,
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vout3_mix_controls, ARRAY_SIZE(vout3_mix_controls)),
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SND_SOC_DAPM_MIXER("VOUT4 Mixer", SND_SOC_NOPM, 0, 0,
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vout4_mix_controls, ARRAY_SIZE(vout4_mix_controls)),
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SND_SOC_DAPM_OUTPUT("VOUT1"),
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SND_SOC_DAPM_OUTPUT("VOUT2"),
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SND_SOC_DAPM_OUTPUT("VOUT3"),
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SND_SOC_DAPM_OUTPUT("VOUT4")
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};
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static const struct snd_soc_dapm_route wm8770_intercon[] = {
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{ "Capture Mux", "AIN1", "AIN1" },
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{ "Capture Mux", "AIN2", "AIN2" },
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{ "Capture Mux", "AIN3", "AIN3" },
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{ "Capture Mux", "AIN4", "AIN4" },
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{ "Capture Mux", "AIN5", "AIN5" },
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{ "Capture Mux", "AIN6", "AIN6" },
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{ "Capture Mux", "AIN7", "AIN7" },
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{ "Capture Mux", "AIN8", "AIN8" },
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{ "ADC", NULL, "Capture Mux" },
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{ "VOUT1 Mixer", NULL, "VOUT12 Supply" },
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{ "VOUT1 Mixer", "DAC1 Switch", "DAC1" },
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{ "VOUT1 Mixer", "AUX1 Switch", "AUX1" },
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{ "VOUT1 Mixer", "Bypass Switch", "Capture Mux" },
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{ "VOUT2 Mixer", NULL, "VOUT12 Supply" },
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{ "VOUT2 Mixer", "DAC2 Switch", "DAC2" },
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{ "VOUT2 Mixer", "AUX2 Switch", "AUX2" },
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{ "VOUT2 Mixer", "Bypass Switch", "Capture Mux" },
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{ "VOUT3 Mixer", NULL, "VOUT34 Supply" },
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{ "VOUT3 Mixer", "DAC3 Switch", "DAC3" },
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{ "VOUT3 Mixer", "AUX3 Switch", "AUX3" },
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{ "VOUT3 Mixer", "Bypass Switch", "Capture Mux" },
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{ "VOUT4 Mixer", NULL, "VOUT34 Supply" },
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{ "VOUT4 Mixer", "DAC4 Switch", "DAC4" },
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{ "VOUT4 Mixer", "Bypass Switch", "Capture Mux" },
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{ "VOUT1", NULL, "VOUT1 Mixer" },
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{ "VOUT2", NULL, "VOUT2 Mixer" },
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{ "VOUT3", NULL, "VOUT3 Mixer" },
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{ "VOUT4", NULL, "VOUT4 Mixer" }
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};
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static int vout12supply_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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struct snd_soc_codec *codec;
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codec = w->codec;
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switch (event) {
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case SND_SOC_DAPM_PRE_PMU:
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snd_soc_update_bits(codec, WM8770_OUTMUX1, 0x180, 0);
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break;
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case SND_SOC_DAPM_POST_PMD:
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snd_soc_update_bits(codec, WM8770_OUTMUX1, 0x180, 0x180);
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break;
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}
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return 0;
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}
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static int vout34supply_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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struct snd_soc_codec *codec;
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codec = w->codec;
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switch (event) {
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case SND_SOC_DAPM_PRE_PMU:
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snd_soc_update_bits(codec, WM8770_OUTMUX2, 0x180, 0);
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break;
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case SND_SOC_DAPM_POST_PMD:
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snd_soc_update_bits(codec, WM8770_OUTMUX2, 0x180, 0x180);
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break;
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}
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return 0;
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}
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static int wm8770_reset(struct snd_soc_codec *codec)
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{
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return snd_soc_write(codec, WM8770_RESET, 0);
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}
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static int wm8770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
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{
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struct snd_soc_codec *codec;
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int iface, master;
|
||||
|
||||
codec = dai->codec;
|
||||
|
||||
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
|
||||
case SND_SOC_DAIFMT_CBM_CFM:
|
||||
master = 0x100;
|
||||
break;
|
||||
case SND_SOC_DAIFMT_CBS_CFS:
|
||||
master = 0;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
iface = 0;
|
||||
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
|
||||
case SND_SOC_DAIFMT_I2S:
|
||||
iface |= 0x2;
|
||||
break;
|
||||
case SND_SOC_DAIFMT_RIGHT_J:
|
||||
break;
|
||||
case SND_SOC_DAIFMT_LEFT_J:
|
||||
iface |= 0x1;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
|
||||
case SND_SOC_DAIFMT_NB_NF:
|
||||
break;
|
||||
case SND_SOC_DAIFMT_IB_IF:
|
||||
iface |= 0xc;
|
||||
break;
|
||||
case SND_SOC_DAIFMT_IB_NF:
|
||||
iface |= 0x8;
|
||||
break;
|
||||
case SND_SOC_DAIFMT_NB_IF:
|
||||
iface |= 0x4;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
snd_soc_update_bits(codec, WM8770_IFACECTRL, 0xf, iface);
|
||||
snd_soc_update_bits(codec, WM8770_MSTRCTRL, 0x100, master);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const int mclk_ratios[] = {
|
||||
128,
|
||||
192,
|
||||
256,
|
||||
384,
|
||||
512,
|
||||
768
|
||||
};
|
||||
|
||||
static int wm8770_hw_params(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *params,
|
||||
struct snd_soc_dai *dai)
|
||||
{
|
||||
struct snd_soc_codec *codec;
|
||||
struct wm8770_priv *wm8770;
|
||||
int i;
|
||||
int iface;
|
||||
int shift;
|
||||
int ratio;
|
||||
|
||||
codec = dai->codec;
|
||||
wm8770 = snd_soc_codec_get_drvdata(codec);
|
||||
|
||||
iface = 0;
|
||||
switch (params_format(params)) {
|
||||
case SNDRV_PCM_FORMAT_S16_LE:
|
||||
break;
|
||||
case SNDRV_PCM_FORMAT_S20_3LE:
|
||||
iface |= 0x10;
|
||||
break;
|
||||
case SNDRV_PCM_FORMAT_S24_LE:
|
||||
iface |= 0x20;
|
||||
break;
|
||||
case SNDRV_PCM_FORMAT_S32_LE:
|
||||
iface |= 0x30;
|
||||
break;
|
||||
}
|
||||
|
||||
switch (substream->stream) {
|
||||
case SNDRV_PCM_STREAM_PLAYBACK:
|
||||
i = 0;
|
||||
shift = 4;
|
||||
break;
|
||||
case SNDRV_PCM_STREAM_CAPTURE:
|
||||
i = 2;
|
||||
shift = 0;
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/* Only need to set MCLK/LRCLK ratio if we're master */
|
||||
if (snd_soc_read(codec, WM8770_MSTRCTRL) & 0x100) {
|
||||
for (; i < ARRAY_SIZE(mclk_ratios); ++i) {
|
||||
ratio = wm8770->sysclk / params_rate(params);
|
||||
if (ratio == mclk_ratios[i])
|
||||
break;
|
||||
}
|
||||
|
||||
if (i == ARRAY_SIZE(mclk_ratios)) {
|
||||
dev_err(codec->dev,
|
||||
"Unable to configure MCLK ratio %d/%d\n",
|
||||
wm8770->sysclk, params_rate(params));
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]);
|
||||
|
||||
snd_soc_update_bits(codec, WM8770_MSTRCTRL, 0x7 << shift,
|
||||
i << shift);
|
||||
}
|
||||
|
||||
snd_soc_update_bits(codec, WM8770_IFACECTRL, 0x30, iface);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int wm8770_mute(struct snd_soc_dai *dai, int mute)
|
||||
{
|
||||
struct snd_soc_codec *codec;
|
||||
|
||||
codec = dai->codec;
|
||||
return snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10,
|
||||
!!mute << 4);
|
||||
}
|
||||
|
||||
static int wm8770_set_sysclk(struct snd_soc_dai *dai,
|
||||
int clk_id, unsigned int freq, int dir)
|
||||
{
|
||||
struct snd_soc_codec *codec;
|
||||
struct wm8770_priv *wm8770;
|
||||
|
||||
codec = dai->codec;
|
||||
wm8770 = snd_soc_codec_get_drvdata(codec);
|
||||
wm8770->sysclk = freq;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void wm8770_sync_cache(struct snd_soc_codec *codec)
|
||||
{
|
||||
int i;
|
||||
u16 *cache;
|
||||
|
||||
if (!codec->cache_sync)
|
||||
return;
|
||||
|
||||
codec->cache_only = 0;
|
||||
cache = codec->reg_cache;
|
||||
for (i = 0; i < codec->driver->reg_cache_size; i++) {
|
||||
if (i == WM8770_RESET || cache[i] == wm8770_reg_defs[i])
|
||||
continue;
|
||||
snd_soc_write(codec, i, cache[i]);
|
||||
}
|
||||
codec->cache_sync = 0;
|
||||
}
|
||||
|
||||
static int wm8770_set_bias_level(struct snd_soc_codec *codec,
|
||||
enum snd_soc_bias_level level)
|
||||
{
|
||||
int ret;
|
||||
struct wm8770_priv *wm8770;
|
||||
|
||||
wm8770 = snd_soc_codec_get_drvdata(codec);
|
||||
|
||||
switch (level) {
|
||||
case SND_SOC_BIAS_ON:
|
||||
break;
|
||||
case SND_SOC_BIAS_PREPARE:
|
||||
break;
|
||||
case SND_SOC_BIAS_STANDBY:
|
||||
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
|
||||
ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
|
||||
wm8770->supplies);
|
||||
if (ret) {
|
||||
dev_err(codec->dev,
|
||||
"Failed to enable supplies: %d\n",
|
||||
ret);
|
||||
return ret;
|
||||
}
|
||||
wm8770_sync_cache(codec);
|
||||
/* global powerup */
|
||||
snd_soc_write(codec, WM8770_PWDNCTRL, 0);
|
||||
}
|
||||
break;
|
||||
case SND_SOC_BIAS_OFF:
|
||||
/* global powerdown */
|
||||
snd_soc_write(codec, WM8770_PWDNCTRL, 1);
|
||||
regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies),
|
||||
wm8770->supplies);
|
||||
break;
|
||||
}
|
||||
|
||||
codec->dapm.bias_level = level;
|
||||
return 0;
|
||||
}
|
||||
|
||||
#define WM8770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
|
||||
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
|
||||
|
||||
static struct snd_soc_dai_ops wm8770_dai_ops = {
|
||||
.digital_mute = wm8770_mute,
|
||||
.hw_params = wm8770_hw_params,
|
||||
.set_fmt = wm8770_set_fmt,
|
||||
.set_sysclk = wm8770_set_sysclk,
|
||||
};
|
||||
|
||||
static struct snd_soc_dai_driver wm8770_dai = {
|
||||
.name = "wm8770-hifi",
|
||||
.playback = {
|
||||
.stream_name = "Playback",
|
||||
.channels_min = 2,
|
||||
.channels_max = 2,
|
||||
.rates = SNDRV_PCM_RATE_8000_192000,
|
||||
.formats = WM8770_FORMATS
|
||||
},
|
||||
.capture = {
|
||||
.stream_name = "Capture",
|
||||
.channels_min = 2,
|
||||
.channels_max = 2,
|
||||
.rates = SNDRV_PCM_RATE_8000_96000,
|
||||
.formats = WM8770_FORMATS
|
||||
},
|
||||
.ops = &wm8770_dai_ops,
|
||||
.symmetric_rates = 1
|
||||
};
|
||||
|
||||
#ifdef CONFIG_PM
|
||||
static int wm8770_suspend(struct snd_soc_codec *codec, pm_message_t state)
|
||||
{
|
||||
wm8770_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int wm8770_resume(struct snd_soc_codec *codec)
|
||||
{
|
||||
wm8770_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
||||
return 0;
|
||||
}
|
||||
#else
|
||||
#define wm8770_suspend NULL
|
||||
#define wm8770_resume NULL
|
||||
#endif
|
||||
|
||||
static int wm8770_probe(struct snd_soc_codec *codec)
|
||||
{
|
||||
struct wm8770_priv *wm8770;
|
||||
int ret;
|
||||
int i;
|
||||
|
||||
wm8770 = snd_soc_codec_get_drvdata(codec);
|
||||
wm8770->codec = codec;
|
||||
|
||||
codec->dapm.idle_bias_off = 1;
|
||||
|
||||
ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8770->control_type);
|
||||
if (ret < 0) {
|
||||
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++)
|
||||
wm8770->supplies[i].supply = wm8770_supply_names[i];
|
||||
|
||||
ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8770->supplies),
|
||||
wm8770->supplies);
|
||||
if (ret) {
|
||||
dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
|
||||
return ret;
|
||||
}
|
||||
|
||||
wm8770->disable_nb[0].notifier_call = wm8770_regulator_event_0;
|
||||
wm8770->disable_nb[1].notifier_call = wm8770_regulator_event_1;
|
||||
wm8770->disable_nb[2].notifier_call = wm8770_regulator_event_2;
|
||||
|
||||
/* This should really be moved into the regulator core */
|
||||
for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) {
|
||||
ret = regulator_register_notifier(wm8770->supplies[i].consumer,
|
||||
&wm8770->disable_nb[i]);
|
||||
if (ret) {
|
||||
dev_err(codec->dev,
|
||||
"Failed to register regulator notifier: %d\n",
|
||||
ret);
|
||||
}
|
||||
}
|
||||
|
||||
ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
|
||||
wm8770->supplies);
|
||||
if (ret) {
|
||||
dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
|
||||
goto err_reg_get;
|
||||
}
|
||||
|
||||
ret = wm8770_reset(codec);
|
||||
if (ret < 0) {
|
||||
dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
|
||||
goto err_reg_enable;
|
||||
}
|
||||
|
||||
wm8770_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
||||
|
||||
/* latch the volume update bits */
|
||||
snd_soc_update_bits(codec, WM8770_MSDIGVOL, 0x100, 0x100);
|
||||
snd_soc_update_bits(codec, WM8770_MSALGVOL, 0x100, 0x100);
|
||||
snd_soc_update_bits(codec, WM8770_VOUT1RVOL, 0x100, 0x100);
|
||||
snd_soc_update_bits(codec, WM8770_VOUT2RVOL, 0x100, 0x100);
|
||||
snd_soc_update_bits(codec, WM8770_VOUT3RVOL, 0x100, 0x100);
|
||||
snd_soc_update_bits(codec, WM8770_VOUT4RVOL, 0x100, 0x100);
|
||||
snd_soc_update_bits(codec, WM8770_DAC1RVOL, 0x100, 0x100);
|
||||
snd_soc_update_bits(codec, WM8770_DAC2RVOL, 0x100, 0x100);
|
||||
snd_soc_update_bits(codec, WM8770_DAC3RVOL, 0x100, 0x100);
|
||||
snd_soc_update_bits(codec, WM8770_DAC4RVOL, 0x100, 0x100);
|
||||
|
||||
/* mute all DACs */
|
||||
snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10, 0x10);
|
||||
|
||||
snd_soc_add_controls(codec, wm8770_snd_controls,
|
||||
ARRAY_SIZE(wm8770_snd_controls));
|
||||
snd_soc_dapm_new_controls(&codec->dapm, wm8770_dapm_widgets,
|
||||
ARRAY_SIZE(wm8770_dapm_widgets));
|
||||
snd_soc_dapm_add_routes(&codec->dapm, wm8770_intercon,
|
||||
ARRAY_SIZE(wm8770_intercon));
|
||||
return 0;
|
||||
|
||||
err_reg_enable:
|
||||
regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
|
||||
err_reg_get:
|
||||
regulator_bulk_free(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int wm8770_remove(struct snd_soc_codec *codec)
|
||||
{
|
||||
struct wm8770_priv *wm8770;
|
||||
int i;
|
||||
|
||||
wm8770 = snd_soc_codec_get_drvdata(codec);
|
||||
wm8770_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(wm8770->supplies); ++i)
|
||||
regulator_unregister_notifier(wm8770->supplies[i].consumer,
|
||||
&wm8770->disable_nb[i]);
|
||||
regulator_bulk_free(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct snd_soc_codec_driver soc_codec_dev_wm8770 = {
|
||||
.probe = wm8770_probe,
|
||||
.remove = wm8770_remove,
|
||||
.suspend = wm8770_suspend,
|
||||
.resume = wm8770_resume,
|
||||
.set_bias_level = wm8770_set_bias_level,
|
||||
.reg_cache_size = ARRAY_SIZE(wm8770_reg_defs),
|
||||
.reg_word_size = sizeof (u16),
|
||||
.reg_cache_default = wm8770_reg_defs
|
||||
};
|
||||
|
||||
#if defined(CONFIG_SPI_MASTER)
|
||||
static int __devinit wm8770_spi_probe(struct spi_device *spi)
|
||||
{
|
||||
struct wm8770_priv *wm8770;
|
||||
int ret;
|
||||
|
||||
wm8770 = kzalloc(sizeof(struct wm8770_priv), GFP_KERNEL);
|
||||
if (!wm8770)
|
||||
return -ENOMEM;
|
||||
|
||||
wm8770->control_type = SND_SOC_SPI;
|
||||
spi_set_drvdata(spi, wm8770);
|
||||
|
||||
ret = snd_soc_register_codec(&spi->dev,
|
||||
&soc_codec_dev_wm8770, &wm8770_dai, 1);
|
||||
if (ret < 0)
|
||||
kfree(wm8770);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __devexit wm8770_spi_remove(struct spi_device *spi)
|
||||
{
|
||||
snd_soc_unregister_codec(&spi->dev);
|
||||
kfree(spi_get_drvdata(spi));
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct spi_driver wm8770_spi_driver = {
|
||||
.driver = {
|
||||
.name = "wm8770",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = wm8770_spi_probe,
|
||||
.remove = __devexit_p(wm8770_spi_remove)
|
||||
};
|
||||
#endif
|
||||
|
||||
static int __init wm8770_modinit(void)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
#if defined(CONFIG_SPI_MASTER)
|
||||
ret = spi_register_driver(&wm8770_spi_driver);
|
||||
if (ret) {
|
||||
printk(KERN_ERR "Failed to register wm8770 SPI driver: %d\n",
|
||||
ret);
|
||||
}
|
||||
#endif
|
||||
return ret;
|
||||
}
|
||||
module_init(wm8770_modinit);
|
||||
|
||||
static void __exit wm8770_exit(void)
|
||||
{
|
||||
#if defined(CONFIG_SPI_MASTER)
|
||||
spi_unregister_driver(&wm8770_spi_driver);
|
||||
#endif
|
||||
}
|
||||
module_exit(wm8770_exit);
|
||||
|
||||
MODULE_DESCRIPTION("ASoC WM8770 driver");
|
||||
MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
|
@ -0,0 +1,51 @@
|
|||
/*
|
||||
* wm8770.h -- WM8770 ASoC driver
|
||||
*
|
||||
* Copyright 2010 Wolfson Microelectronics plc
|
||||
*
|
||||
* Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
|
||||
*
|
||||
* 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 _WM8770_H
|
||||
#define _WM8770_H
|
||||
|
||||
/* Registers */
|
||||
#define WM8770_VOUT1LVOL 0
|
||||
#define WM8770_VOUT1RVOL 0x1
|
||||
#define WM8770_VOUT2LVOL 0x2
|
||||
#define WM8770_VOUT2RVOL 0x3
|
||||
#define WM8770_VOUT3LVOL 0x4
|
||||
#define WM8770_VOUT3RVOL 0x5
|
||||
#define WM8770_VOUT4LVOL 0x6
|
||||
#define WM8770_VOUT4RVOL 0x7
|
||||
#define WM8770_MSALGVOL 0x8
|
||||
#define WM8770_DAC1LVOL 0x9
|
||||
#define WM8770_DAC1RVOL 0xa
|
||||
#define WM8770_DAC2LVOL 0xb
|
||||
#define WM8770_DAC2RVOL 0xc
|
||||
#define WM8770_DAC3LVOL 0xd
|
||||
#define WM8770_DAC3RVOL 0xe
|
||||
#define WM8770_DAC4LVOL 0xf
|
||||
#define WM8770_DAC4RVOL 0x10
|
||||
#define WM8770_MSDIGVOL 0x11
|
||||
#define WM8770_DACPHASE 0x12
|
||||
#define WM8770_DACCTRL1 0x13
|
||||
#define WM8770_DACMUTE 0x14
|
||||
#define WM8770_DACCTRL2 0x15
|
||||
#define WM8770_IFACECTRL 0x16
|
||||
#define WM8770_MSTRCTRL 0x17
|
||||
#define WM8770_PWDNCTRL 0x18
|
||||
#define WM8770_ADCLCTRL 0x19
|
||||
#define WM8770_ADCRCTRL 0x1a
|
||||
#define WM8770_ADCMUX 0x1b
|
||||
#define WM8770_OUTMUX1 0x1c
|
||||
#define WM8770_OUTMUX2 0x1d
|
||||
#define WM8770_RESET 0x31
|
||||
|
||||
#define WM8770_CACHEREGNUM 0x20
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue