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linux/sound/soc/codecs/wm8985.c
Lars-Peter Clausen 84b315ee89 ASoC: Drop unused state parameter from CODEC suspend callback 
The existence of this parameter is purely historical. None of the CODEC drivers
uses it and we always pass in the same value anyway, so it should be safe to
remove it.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-12-02 10:32:03 +00:00

1194 lines
34 KiB
C
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/*
* wm8985.c -- WM8985 ALSA SoC Audio 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.
*
* TODO:
* o Add OUT3/OUT4 mixer controls.
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/regulator/consumer.h>
#include <linux/spi/spi.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include "wm8985.h"
#define WM8985_NUM_SUPPLIES 4
static const char *wm8985_supply_names[WM8985_NUM_SUPPLIES] = {
"DCVDD",
"DBVDD",
"AVDD1",
"AVDD2"
};
static const u16 wm8985_reg_defs[] = {
0x0000, /* R0 - Software Reset */
0x0000, /* R1 - Power management 1 */
0x0000, /* R2 - Power management 2 */
0x0000, /* R3 - Power management 3 */
0x0050, /* R4 - Audio Interface */
0x0000, /* R5 - Companding control */
0x0140, /* R6 - Clock Gen control */
0x0000, /* R7 - Additional control */
0x0000, /* R8 - GPIO Control */
0x0000, /* R9 - Jack Detect Control 1 */
0x0000, /* R10 - DAC Control */
0x00FF, /* R11 - Left DAC digital Vol */
0x00FF, /* R12 - Right DAC digital vol */
0x0000, /* R13 - Jack Detect Control 2 */
0x0100, /* R14 - ADC Control */
0x00FF, /* R15 - Left ADC Digital Vol */
0x00FF, /* R16 - Right ADC Digital Vol */
0x0000, /* R17 */
0x012C, /* R18 - EQ1 - low shelf */
0x002C, /* R19 - EQ2 - peak 1 */
0x002C, /* R20 - EQ3 - peak 2 */
0x002C, /* R21 - EQ4 - peak 3 */
0x002C, /* R22 - EQ5 - high shelf */
0x0000, /* R23 */
0x0032, /* R24 - DAC Limiter 1 */
0x0000, /* R25 - DAC Limiter 2 */
0x0000, /* R26 */
0x0000, /* R27 - Notch Filter 1 */
0x0000, /* R28 - Notch Filter 2 */
0x0000, /* R29 - Notch Filter 3 */
0x0000, /* R30 - Notch Filter 4 */
0x0000, /* R31 */
0x0038, /* R32 - ALC control 1 */
0x000B, /* R33 - ALC control 2 */
0x0032, /* R34 - ALC control 3 */
0x0000, /* R35 - Noise Gate */
0x0008, /* R36 - PLL N */
0x000C, /* R37 - PLL K 1 */
0x0093, /* R38 - PLL K 2 */
0x00E9, /* R39 - PLL K 3 */
0x0000, /* R40 */
0x0000, /* R41 - 3D control */
0x0000, /* R42 - OUT4 to ADC */
0x0000, /* R43 - Beep control */
0x0033, /* R44 - Input ctrl */
0x0010, /* R45 - Left INP PGA gain ctrl */
0x0010, /* R46 - Right INP PGA gain ctrl */
0x0100, /* R47 - Left ADC BOOST ctrl */
0x0100, /* R48 - Right ADC BOOST ctrl */
0x0002, /* R49 - Output ctrl */
0x0001, /* R50 - Left mixer ctrl */
0x0001, /* R51 - Right mixer ctrl */
0x0039, /* R52 - LOUT1 (HP) volume ctrl */
0x0039, /* R53 - ROUT1 (HP) volume ctrl */
0x0039, /* R54 - LOUT2 (SPK) volume ctrl */
0x0039, /* R55 - ROUT2 (SPK) volume ctrl */
0x0001, /* R56 - OUT3 mixer ctrl */
0x0001, /* R57 - OUT4 (MONO) mix ctrl */
0x0001, /* R58 */
0x0000, /* R59 */
0x0004, /* R60 - OUTPUT ctrl */
0x0000, /* R61 - BIAS CTRL */
0x0180, /* R62 */
0x0000 /* R63 */
};
/*
* latch bit 8 of these registers to ensure instant
* volume updates
*/
static const int volume_update_regs[] = {
WM8985_LEFT_DAC_DIGITAL_VOL,
WM8985_RIGHT_DAC_DIGITAL_VOL,
WM8985_LEFT_ADC_DIGITAL_VOL,
WM8985_RIGHT_ADC_DIGITAL_VOL,
WM8985_LOUT2_SPK_VOLUME_CTRL,
WM8985_ROUT2_SPK_VOLUME_CTRL,
WM8985_LOUT1_HP_VOLUME_CTRL,
WM8985_ROUT1_HP_VOLUME_CTRL,
WM8985_LEFT_INP_PGA_GAIN_CTRL,
WM8985_RIGHT_INP_PGA_GAIN_CTRL
};
struct wm8985_priv {
enum snd_soc_control_type control_type;
struct regulator_bulk_data supplies[WM8985_NUM_SUPPLIES];
unsigned int sysclk;
unsigned int bclk;
};
static const struct {
int div;
int ratio;
} fs_ratios[] = {
{ 10, 128 },
{ 15, 192 },
{ 20, 256 },
{ 30, 384 },
{ 40, 512 },
{ 60, 768 },
{ 80, 1024 },
{ 120, 1536 }
};
static const int srates[] = { 48000, 32000, 24000, 16000, 12000, 8000 };
static const int bclk_divs[] = {
1, 2, 4, 8, 16, 32
};
static int eqmode_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
static int eqmode_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol);
static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
static const DECLARE_TLV_DB_SCALE(adc_tlv, -12700, 50, 1);
static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
static const DECLARE_TLV_DB_SCALE(lim_thresh_tlv, -600, 100, 0);
static const DECLARE_TLV_DB_SCALE(lim_boost_tlv, 0, 100, 0);
static const DECLARE_TLV_DB_SCALE(alc_min_tlv, -1200, 600, 0);
static const DECLARE_TLV_DB_SCALE(alc_max_tlv, -675, 600, 0);
static const DECLARE_TLV_DB_SCALE(alc_tar_tlv, -2250, 150, 0);
static const DECLARE_TLV_DB_SCALE(pga_vol_tlv, -1200, 75, 0);
static const DECLARE_TLV_DB_SCALE(boost_tlv, -1200, 300, 1);
static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
static const DECLARE_TLV_DB_SCALE(aux_tlv, -1500, 300, 0);
static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
static const DECLARE_TLV_DB_SCALE(pga_boost_tlv, 0, 2000, 0);
static const char *alc_sel_text[] = { "Off", "Right", "Left", "Stereo" };
static const SOC_ENUM_SINGLE_DECL(alc_sel, WM8985_ALC_CONTROL_1, 7,
alc_sel_text);
static const char *alc_mode_text[] = { "ALC", "Limiter" };
static const SOC_ENUM_SINGLE_DECL(alc_mode, WM8985_ALC_CONTROL_3, 8,
alc_mode_text);
static const char *filter_mode_text[] = { "Audio", "Application" };
static const SOC_ENUM_SINGLE_DECL(filter_mode, WM8985_ADC_CONTROL, 7,
filter_mode_text);
static const char *eq_bw_text[] = { "Narrow", "Wide" };
static const char *eqmode_text[] = { "Capture", "Playback" };
static const SOC_ENUM_SINGLE_EXT_DECL(eqmode, eqmode_text);
static const char *eq1_cutoff_text[] = {
"80Hz", "105Hz", "135Hz", "175Hz"
};
static const SOC_ENUM_SINGLE_DECL(eq1_cutoff, WM8985_EQ1_LOW_SHELF, 5,
eq1_cutoff_text);
static const char *eq2_cutoff_text[] = {
"230Hz", "300Hz", "385Hz", "500Hz"
};
static const SOC_ENUM_SINGLE_DECL(eq2_bw, WM8985_EQ2_PEAK_1, 8, eq_bw_text);
static const SOC_ENUM_SINGLE_DECL(eq2_cutoff, WM8985_EQ2_PEAK_1, 5,
eq2_cutoff_text);
static const char *eq3_cutoff_text[] = {
"650Hz", "850Hz", "1.1kHz", "1.4kHz"
};
static const SOC_ENUM_SINGLE_DECL(eq3_bw, WM8985_EQ3_PEAK_2, 8, eq_bw_text);
static const SOC_ENUM_SINGLE_DECL(eq3_cutoff, WM8985_EQ3_PEAK_2, 5,
eq3_cutoff_text);
static const char *eq4_cutoff_text[] = {
"1.8kHz", "2.4kHz", "3.2kHz", "4.1kHz"
};
static const SOC_ENUM_SINGLE_DECL(eq4_bw, WM8985_EQ4_PEAK_3, 8, eq_bw_text);
static const SOC_ENUM_SINGLE_DECL(eq4_cutoff, WM8985_EQ4_PEAK_3, 5,
eq4_cutoff_text);
static const char *eq5_cutoff_text[] = {
"5.3kHz", "6.9kHz", "9kHz", "11.7kHz"
};
static const SOC_ENUM_SINGLE_DECL(eq5_cutoff, WM8985_EQ5_HIGH_SHELF, 5,
eq5_cutoff_text);
static const char *speaker_mode_text[] = { "Class A/B", "Class D" };
static const SOC_ENUM_SINGLE_DECL(speaker_mode, 0x17, 8, speaker_mode_text);
static const char *depth_3d_text[] = {
"Off",
"6.67%",
"13.3%",
"20%",
"26.7%",
"33.3%",
"40%",
"46.6%",
"53.3%",
"60%",
"66.7%",
"73.3%",
"80%",
"86.7%",
"93.3%",
"100%"
};
static const SOC_ENUM_SINGLE_DECL(depth_3d, WM8985_3D_CONTROL, 0,
depth_3d_text);
static const struct snd_kcontrol_new wm8985_snd_controls[] = {
SOC_SINGLE("Digital Loopback Switch", WM8985_COMPANDING_CONTROL,
0, 1, 0),
SOC_ENUM("ALC Capture Function", alc_sel),
SOC_SINGLE_TLV("ALC Capture Max Volume", WM8985_ALC_CONTROL_1,
3, 7, 0, alc_max_tlv),
SOC_SINGLE_TLV("ALC Capture Min Volume", WM8985_ALC_CONTROL_1,
0, 7, 0, alc_min_tlv),
SOC_SINGLE_TLV("ALC Capture Target Volume", WM8985_ALC_CONTROL_2,
0, 15, 0, alc_tar_tlv),
SOC_SINGLE("ALC Capture Attack", WM8985_ALC_CONTROL_3, 0, 10, 0),
SOC_SINGLE("ALC Capture Hold", WM8985_ALC_CONTROL_2, 4, 10, 0),
SOC_SINGLE("ALC Capture Decay", WM8985_ALC_CONTROL_3, 4, 10, 0),
SOC_ENUM("ALC Mode", alc_mode),
SOC_SINGLE("ALC Capture NG Switch", WM8985_NOISE_GATE,
3, 1, 0),
SOC_SINGLE("ALC Capture NG Threshold", WM8985_NOISE_GATE,
0, 7, 1),
SOC_DOUBLE_R_TLV("Capture Volume", WM8985_LEFT_ADC_DIGITAL_VOL,
WM8985_RIGHT_ADC_DIGITAL_VOL, 0, 255, 0, adc_tlv),
SOC_DOUBLE_R("Capture PGA ZC Switch", WM8985_LEFT_INP_PGA_GAIN_CTRL,
WM8985_RIGHT_INP_PGA_GAIN_CTRL, 7, 1, 0),
SOC_DOUBLE_R_TLV("Capture PGA Volume", WM8985_LEFT_INP_PGA_GAIN_CTRL,
WM8985_RIGHT_INP_PGA_GAIN_CTRL, 0, 63, 0, pga_vol_tlv),
SOC_DOUBLE_R_TLV("Capture PGA Boost Volume",
WM8985_LEFT_ADC_BOOST_CTRL, WM8985_RIGHT_ADC_BOOST_CTRL,
8, 1, 0, pga_boost_tlv),
SOC_DOUBLE("ADC Inversion Switch", WM8985_ADC_CONTROL, 0, 1, 1, 0),
SOC_SINGLE("ADC 128x Oversampling Switch", WM8985_ADC_CONTROL, 8, 1, 0),
SOC_DOUBLE_R_TLV("Playback Volume", WM8985_LEFT_DAC_DIGITAL_VOL,
WM8985_RIGHT_DAC_DIGITAL_VOL, 0, 255, 0, dac_tlv),
SOC_SINGLE("DAC Playback Limiter Switch", WM8985_DAC_LIMITER_1, 8, 1, 0),
SOC_SINGLE("DAC Playback Limiter Decay", WM8985_DAC_LIMITER_1, 4, 10, 0),
SOC_SINGLE("DAC Playback Limiter Attack", WM8985_DAC_LIMITER_1, 0, 11, 0),
SOC_SINGLE_TLV("DAC Playback Limiter Threshold", WM8985_DAC_LIMITER_2,
4, 7, 1, lim_thresh_tlv),
SOC_SINGLE_TLV("DAC Playback Limiter Boost Volume", WM8985_DAC_LIMITER_2,
0, 12, 0, lim_boost_tlv),
SOC_DOUBLE("DAC Inversion Switch", WM8985_DAC_CONTROL, 0, 1, 1, 0),
SOC_SINGLE("DAC Auto Mute Switch", WM8985_DAC_CONTROL, 2, 1, 0),
SOC_SINGLE("DAC 128x Oversampling Switch", WM8985_DAC_CONTROL, 3, 1, 0),
SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8985_LOUT1_HP_VOLUME_CTRL,
WM8985_ROUT1_HP_VOLUME_CTRL, 0, 63, 0, out_tlv),
SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8985_LOUT1_HP_VOLUME_CTRL,
WM8985_ROUT1_HP_VOLUME_CTRL, 7, 1, 0),
SOC_DOUBLE_R("Headphone Switch", WM8985_LOUT1_HP_VOLUME_CTRL,
WM8985_ROUT1_HP_VOLUME_CTRL, 6, 1, 1),
SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8985_LOUT2_SPK_VOLUME_CTRL,
WM8985_ROUT2_SPK_VOLUME_CTRL, 0, 63, 0, out_tlv),
SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8985_LOUT2_SPK_VOLUME_CTRL,
WM8985_ROUT2_SPK_VOLUME_CTRL, 7, 1, 0),
SOC_DOUBLE_R("Speaker Switch", WM8985_LOUT2_SPK_VOLUME_CTRL,
WM8985_ROUT2_SPK_VOLUME_CTRL, 6, 1, 1),
SOC_SINGLE("High Pass Filter Switch", WM8985_ADC_CONTROL, 8, 1, 0),
SOC_ENUM("High Pass Filter Mode", filter_mode),
SOC_SINGLE("High Pass Filter Cutoff", WM8985_ADC_CONTROL, 4, 7, 0),
SOC_DOUBLE_R_TLV("Aux Bypass Volume",
WM8985_LEFT_MIXER_CTRL, WM8985_RIGHT_MIXER_CTRL, 6, 7, 0,
aux_tlv),
SOC_DOUBLE_R_TLV("Input PGA Bypass Volume",
WM8985_LEFT_MIXER_CTRL, WM8985_RIGHT_MIXER_CTRL, 2, 7, 0,
bypass_tlv),
SOC_ENUM_EXT("Equalizer Function", eqmode, eqmode_get, eqmode_put),
SOC_ENUM("EQ1 Cutoff", eq1_cutoff),
SOC_SINGLE_TLV("EQ1 Volume", WM8985_EQ1_LOW_SHELF, 0, 24, 1, eq_tlv),
SOC_ENUM("EQ2 Bandwith", eq2_bw),
SOC_ENUM("EQ2 Cutoff", eq2_cutoff),
SOC_SINGLE_TLV("EQ2 Volume", WM8985_EQ2_PEAK_1, 0, 24, 1, eq_tlv),
SOC_ENUM("EQ3 Bandwith", eq3_bw),
SOC_ENUM("EQ3 Cutoff", eq3_cutoff),
SOC_SINGLE_TLV("EQ3 Volume", WM8985_EQ3_PEAK_2, 0, 24, 1, eq_tlv),
SOC_ENUM("EQ4 Bandwith", eq4_bw),
SOC_ENUM("EQ4 Cutoff", eq4_cutoff),
SOC_SINGLE_TLV("EQ4 Volume", WM8985_EQ4_PEAK_3, 0, 24, 1, eq_tlv),
SOC_ENUM("EQ5 Cutoff", eq5_cutoff),
SOC_SINGLE_TLV("EQ5 Volume", WM8985_EQ5_HIGH_SHELF, 0, 24, 1, eq_tlv),
SOC_ENUM("3D Depth", depth_3d),
SOC_ENUM("Speaker Mode", speaker_mode)
};
static const struct snd_kcontrol_new left_out_mixer[] = {
SOC_DAPM_SINGLE("Line Switch", WM8985_LEFT_MIXER_CTRL, 1, 1, 0),
SOC_DAPM_SINGLE("Aux Switch", WM8985_LEFT_MIXER_CTRL, 5, 1, 0),
SOC_DAPM_SINGLE("PCM Switch", WM8985_LEFT_MIXER_CTRL, 0, 1, 0),
};
static const struct snd_kcontrol_new right_out_mixer[] = {
SOC_DAPM_SINGLE("Line Switch", WM8985_RIGHT_MIXER_CTRL, 1, 1, 0),
SOC_DAPM_SINGLE("Aux Switch", WM8985_RIGHT_MIXER_CTRL, 5, 1, 0),
SOC_DAPM_SINGLE("PCM Switch", WM8985_RIGHT_MIXER_CTRL, 0, 1, 0),
};
static const struct snd_kcontrol_new left_input_mixer[] = {
SOC_DAPM_SINGLE("L2 Switch", WM8985_INPUT_CTRL, 2, 1, 0),
SOC_DAPM_SINGLE("MicN Switch", WM8985_INPUT_CTRL, 1, 1, 0),
SOC_DAPM_SINGLE("MicP Switch", WM8985_INPUT_CTRL, 0, 1, 0),
};
static const struct snd_kcontrol_new right_input_mixer[] = {
SOC_DAPM_SINGLE("R2 Switch", WM8985_INPUT_CTRL, 6, 1, 0),
SOC_DAPM_SINGLE("MicN Switch", WM8985_INPUT_CTRL, 5, 1, 0),
SOC_DAPM_SINGLE("MicP Switch", WM8985_INPUT_CTRL, 4, 1, 0),
};
static const struct snd_kcontrol_new left_boost_mixer[] = {
SOC_DAPM_SINGLE_TLV("L2 Volume", WM8985_LEFT_ADC_BOOST_CTRL,
4, 7, 0, boost_tlv),
SOC_DAPM_SINGLE_TLV("AUXL Volume", WM8985_LEFT_ADC_BOOST_CTRL,
0, 7, 0, boost_tlv)
};
static const struct snd_kcontrol_new right_boost_mixer[] = {
SOC_DAPM_SINGLE_TLV("R2 Volume", WM8985_RIGHT_ADC_BOOST_CTRL,
4, 7, 0, boost_tlv),
SOC_DAPM_SINGLE_TLV("AUXR Volume", WM8985_RIGHT_ADC_BOOST_CTRL,
0, 7, 0, boost_tlv)
};
static const struct snd_soc_dapm_widget wm8985_dapm_widgets[] = {
SND_SOC_DAPM_DAC("Left DAC", "Left Playback", WM8985_POWER_MANAGEMENT_3,
0, 0),
SND_SOC_DAPM_DAC("Right DAC", "Right Playback", WM8985_POWER_MANAGEMENT_3,
1, 0),
SND_SOC_DAPM_ADC("Left ADC", "Left Capture", WM8985_POWER_MANAGEMENT_2,
0, 0),
SND_SOC_DAPM_ADC("Right ADC", "Right Capture", WM8985_POWER_MANAGEMENT_2,
1, 0),
SND_SOC_DAPM_MIXER("Left Output Mixer", WM8985_POWER_MANAGEMENT_3,
2, 0, left_out_mixer, ARRAY_SIZE(left_out_mixer)),
SND_SOC_DAPM_MIXER("Right Output Mixer", WM8985_POWER_MANAGEMENT_3,
3, 0, right_out_mixer, ARRAY_SIZE(right_out_mixer)),
SND_SOC_DAPM_MIXER("Left Input Mixer", WM8985_POWER_MANAGEMENT_2,
2, 0, left_input_mixer, ARRAY_SIZE(left_input_mixer)),
SND_SOC_DAPM_MIXER("Right Input Mixer", WM8985_POWER_MANAGEMENT_2,
3, 0, right_input_mixer, ARRAY_SIZE(right_input_mixer)),
SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8985_POWER_MANAGEMENT_2,
4, 0, left_boost_mixer, ARRAY_SIZE(left_boost_mixer)),
SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8985_POWER_MANAGEMENT_2,
5, 0, right_boost_mixer, ARRAY_SIZE(right_boost_mixer)),
SND_SOC_DAPM_PGA("Left Capture PGA", WM8985_LEFT_INP_PGA_GAIN_CTRL,
6, 1, NULL, 0),
SND_SOC_DAPM_PGA("Right Capture PGA", WM8985_RIGHT_INP_PGA_GAIN_CTRL,
6, 1, NULL, 0),
SND_SOC_DAPM_PGA("Left Headphone Out", WM8985_POWER_MANAGEMENT_2,
7, 0, NULL, 0),
SND_SOC_DAPM_PGA("Right Headphone Out", WM8985_POWER_MANAGEMENT_2,
8, 0, NULL, 0),
SND_SOC_DAPM_PGA("Left Speaker Out", WM8985_POWER_MANAGEMENT_3,
5, 0, NULL, 0),
SND_SOC_DAPM_PGA("Right Speaker Out", WM8985_POWER_MANAGEMENT_3,
6, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("Mic Bias", WM8985_POWER_MANAGEMENT_1, 4, 0,
NULL, 0),
SND_SOC_DAPM_INPUT("LIN"),
SND_SOC_DAPM_INPUT("LIP"),
SND_SOC_DAPM_INPUT("RIN"),
SND_SOC_DAPM_INPUT("RIP"),
SND_SOC_DAPM_INPUT("AUXL"),
SND_SOC_DAPM_INPUT("AUXR"),
SND_SOC_DAPM_INPUT("L2"),
SND_SOC_DAPM_INPUT("R2"),
SND_SOC_DAPM_OUTPUT("HPL"),
SND_SOC_DAPM_OUTPUT("HPR"),
SND_SOC_DAPM_OUTPUT("SPKL"),
SND_SOC_DAPM_OUTPUT("SPKR")
};
static const struct snd_soc_dapm_route audio_map[] = {
{ "Right Output Mixer", "PCM Switch", "Right DAC" },
{ "Right Output Mixer", "Aux Switch", "AUXR" },
{ "Right Output Mixer", "Line Switch", "Right Boost Mixer" },
{ "Left Output Mixer", "PCM Switch", "Left DAC" },
{ "Left Output Mixer", "Aux Switch", "AUXL" },
{ "Left Output Mixer", "Line Switch", "Left Boost Mixer" },
{ "Right Headphone Out", NULL, "Right Output Mixer" },
{ "HPR", NULL, "Right Headphone Out" },
{ "Left Headphone Out", NULL, "Left Output Mixer" },
{ "HPL", NULL, "Left Headphone Out" },
{ "Right Speaker Out", NULL, "Right Output Mixer" },
{ "SPKR", NULL, "Right Speaker Out" },
{ "Left Speaker Out", NULL, "Left Output Mixer" },
{ "SPKL", NULL, "Left Speaker Out" },
{ "Right ADC", NULL, "Right Boost Mixer" },
{ "Right Boost Mixer", "AUXR Volume", "AUXR" },
{ "Right Boost Mixer", NULL, "Right Capture PGA" },
{ "Right Boost Mixer", "R2 Volume", "R2" },
{ "Left ADC", NULL, "Left Boost Mixer" },
{ "Left Boost Mixer", "AUXL Volume", "AUXL" },
{ "Left Boost Mixer", NULL, "Left Capture PGA" },
{ "Left Boost Mixer", "L2 Volume", "L2" },
{ "Right Capture PGA", NULL, "Right Input Mixer" },
{ "Left Capture PGA", NULL, "Left Input Mixer" },
{ "Right Input Mixer", "R2 Switch", "R2" },
{ "Right Input Mixer", "MicN Switch", "RIN" },
{ "Right Input Mixer", "MicP Switch", "RIP" },
{ "Left Input Mixer", "L2 Switch", "L2" },
{ "Left Input Mixer", "MicN Switch", "LIN" },
{ "Left Input Mixer", "MicP Switch", "LIP" },
};
static int eqmode_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
unsigned int reg;
reg = snd_soc_read(codec, WM8985_EQ1_LOW_SHELF);
if (reg & WM8985_EQ3DMODE)
ucontrol->value.integer.value[0] = 1;
else
ucontrol->value.integer.value[0] = 0;
return 0;
}
static int eqmode_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
unsigned int regpwr2, regpwr3;
unsigned int reg_eq;
if (ucontrol->value.integer.value[0] != 0
&& ucontrol->value.integer.value[0] != 1)
return -EINVAL;
reg_eq = snd_soc_read(codec, WM8985_EQ1_LOW_SHELF);
switch ((reg_eq & WM8985_EQ3DMODE) >> WM8985_EQ3DMODE_SHIFT) {
case 0:
if (!ucontrol->value.integer.value[0])
return 0;
break;
case 1:
if (ucontrol->value.integer.value[0])
return 0;
break;
}
regpwr2 = snd_soc_read(codec, WM8985_POWER_MANAGEMENT_2);
regpwr3 = snd_soc_read(codec, WM8985_POWER_MANAGEMENT_3);
/* disable the DACs and ADCs */
snd_soc_update_bits(codec, WM8985_POWER_MANAGEMENT_2,
WM8985_ADCENR_MASK | WM8985_ADCENL_MASK, 0);
snd_soc_update_bits(codec, WM8985_POWER_MANAGEMENT_3,
WM8985_DACENR_MASK | WM8985_DACENL_MASK, 0);
snd_soc_update_bits(codec, WM8985_ADDITIONAL_CONTROL,
WM8985_M128ENB_MASK, WM8985_M128ENB);
/* set the desired eqmode */
snd_soc_update_bits(codec, WM8985_EQ1_LOW_SHELF,
WM8985_EQ3DMODE_MASK,
ucontrol->value.integer.value[0]
<< WM8985_EQ3DMODE_SHIFT);
/* restore DAC/ADC configuration */
snd_soc_write(codec, WM8985_POWER_MANAGEMENT_2, regpwr2);
snd_soc_write(codec, WM8985_POWER_MANAGEMENT_3, regpwr3);
return 0;
}
static int wm8985_add_widgets(struct snd_soc_codec *codec)
{
struct snd_soc_dapm_context *dapm = &codec->dapm;
snd_soc_dapm_new_controls(dapm, wm8985_dapm_widgets,
ARRAY_SIZE(wm8985_dapm_widgets));
snd_soc_dapm_add_routes(dapm, audio_map,
ARRAY_SIZE(audio_map));
return 0;
}
static int wm8985_reset(struct snd_soc_codec *codec)
{
return snd_soc_write(codec, WM8985_SOFTWARE_RESET, 0x0);
}
static int wm8985_dac_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
return snd_soc_update_bits(codec, WM8985_DAC_CONTROL,
WM8985_SOFTMUTE_MASK,
!!mute << WM8985_SOFTMUTE_SHIFT);
}
static int wm8985_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_codec *codec;
u16 format, master, bcp, lrp;
codec = dai->codec;
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
format = 0x2;
break;
case SND_SOC_DAIFMT_RIGHT_J:
format = 0x0;
break;
case SND_SOC_DAIFMT_LEFT_J:
format = 0x1;
break;
case SND_SOC_DAIFMT_DSP_A:
case SND_SOC_DAIFMT_DSP_B:
format = 0x3;
break;
default:
dev_err(dai->dev, "Unknown dai format\n");
return -EINVAL;
}
snd_soc_update_bits(codec, WM8985_AUDIO_INTERFACE,
WM8985_FMT_MASK, format << WM8985_FMT_SHIFT);
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
master = 1;
break;
case SND_SOC_DAIFMT_CBS_CFS:
master = 0;
break;
default:
dev_err(dai->dev, "Unknown master/slave configuration\n");
return -EINVAL;
}
snd_soc_update_bits(codec, WM8985_CLOCK_GEN_CONTROL,
WM8985_MS_MASK, master << WM8985_MS_SHIFT);
/* frame inversion is not valid for dsp modes */
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_A:
case SND_SOC_DAIFMT_DSP_B:
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_IB_IF:
case SND_SOC_DAIFMT_NB_IF:
return -EINVAL;
default:
break;
}
break;
default:
break;
}
bcp = lrp = 0;
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_IF:
bcp = lrp = 1;
break;
case SND_SOC_DAIFMT_IB_NF:
bcp = 1;
break;
case SND_SOC_DAIFMT_NB_IF:
lrp = 1;
break;
default:
dev_err(dai->dev, "Unknown polarity configuration\n");
return -EINVAL;
}
snd_soc_update_bits(codec, WM8985_AUDIO_INTERFACE,
WM8985_LRP_MASK, lrp << WM8985_LRP_SHIFT);
snd_soc_update_bits(codec, WM8985_AUDIO_INTERFACE,
WM8985_BCP_MASK, bcp << WM8985_BCP_SHIFT);
return 0;
}
static int wm8985_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
int i;
struct snd_soc_codec *codec;
struct wm8985_priv *wm8985;
u16 blen, srate_idx;
unsigned int tmp;
int srate_best;
codec = dai->codec;
wm8985 = snd_soc_codec_get_drvdata(codec);
wm8985->bclk = snd_soc_params_to_bclk(params);
if ((int)wm8985->bclk < 0)
return wm8985->bclk;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
blen = 0x0;
break;
case SNDRV_PCM_FORMAT_S20_3LE:
blen = 0x1;
break;
case SNDRV_PCM_FORMAT_S24_LE:
blen = 0x2;
break;
case SNDRV_PCM_FORMAT_S32_LE:
blen = 0x3;
break;
default:
dev_err(dai->dev, "Unsupported word length %u\n",
params_format(params));
return -EINVAL;
}
snd_soc_update_bits(codec, WM8985_AUDIO_INTERFACE,
WM8985_WL_MASK, blen << WM8985_WL_SHIFT);
/*
* match to the nearest possible sample rate and rely
* on the array index to configure the SR register
*/
srate_idx = 0;
srate_best = abs(srates[0] - params_rate(params));
for (i = 1; i < ARRAY_SIZE(srates); ++i) {
if (abs(srates[i] - params_rate(params)) >= srate_best)
continue;
srate_idx = i;
srate_best = abs(srates[i] - params_rate(params));
}
dev_dbg(dai->dev, "Selected SRATE = %d\n", srates[srate_idx]);
snd_soc_update_bits(codec, WM8985_ADDITIONAL_CONTROL,
WM8985_SR_MASK, srate_idx << WM8985_SR_SHIFT);
dev_dbg(dai->dev, "Target BCLK = %uHz\n", wm8985->bclk);
dev_dbg(dai->dev, "SYSCLK = %uHz\n", wm8985->sysclk);
for (i = 0; i < ARRAY_SIZE(fs_ratios); ++i) {
if (wm8985->sysclk / params_rate(params)
== fs_ratios[i].ratio)
break;
}
if (i == ARRAY_SIZE(fs_ratios)) {
dev_err(dai->dev, "Unable to configure MCLK ratio %u/%u\n",
wm8985->sysclk, params_rate(params));
return -EINVAL;
}
dev_dbg(dai->dev, "MCLK ratio = %dfs\n", fs_ratios[i].ratio);
snd_soc_update_bits(codec, WM8985_CLOCK_GEN_CONTROL,
WM8985_MCLKDIV_MASK, i << WM8985_MCLKDIV_SHIFT);
/* select the appropriate bclk divider */
tmp = (wm8985->sysclk / fs_ratios[i].div) * 10;
for (i = 0; i < ARRAY_SIZE(bclk_divs); ++i) {
if (wm8985->bclk == tmp / bclk_divs[i])
break;
}
if (i == ARRAY_SIZE(bclk_divs)) {
dev_err(dai->dev, "No matching BCLK divider found\n");
return -EINVAL;
}
dev_dbg(dai->dev, "BCLK div = %d\n", i);
snd_soc_update_bits(codec, WM8985_CLOCK_GEN_CONTROL,
WM8985_BCLKDIV_MASK, i << WM8985_BCLKDIV_SHIFT);
return 0;
}
struct pll_div {
u32 div2:1;
u32 n:4;
u32 k:24;
};
#define FIXED_PLL_SIZE ((1ULL << 24) * 10)
static int pll_factors(struct pll_div *pll_div, unsigned int target,
unsigned int source)
{
u64 Kpart;
unsigned long int K, Ndiv, Nmod;
pll_div->div2 = 0;
Ndiv = target / source;
if (Ndiv < 6) {
source >>= 1;
pll_div->div2 = 1;
Ndiv = target / source;
}
if (Ndiv < 6 || Ndiv > 12) {
printk(KERN_ERR "%s: WM8985 N value is not within"
" the recommended range: %lu\n", __func__, Ndiv);
return -EINVAL;
}
pll_div->n = Ndiv;
Nmod = target % source;
Kpart = FIXED_PLL_SIZE * (u64)Nmod;
do_div(Kpart, source);
K = Kpart & 0xffffffff;
if ((K % 10) >= 5)
K += 5;
K /= 10;
pll_div->k = K;
return 0;
}
static int wm8985_set_pll(struct snd_soc_dai *dai, int pll_id,
int source, unsigned int freq_in,
unsigned int freq_out)
{
int ret;
struct snd_soc_codec *codec;
struct pll_div pll_div;
codec = dai->codec;
if (freq_in && freq_out) {
ret = pll_factors(&pll_div, freq_out * 4 * 2, freq_in);
if (ret)
return ret;
}
/* disable the PLL before reprogramming it */
snd_soc_update_bits(codec, WM8985_POWER_MANAGEMENT_1,
WM8985_PLLEN_MASK, 0);
if (!freq_in || !freq_out)
return 0;
/* set PLLN and PRESCALE */
snd_soc_write(codec, WM8985_PLL_N,
(pll_div.div2 << WM8985_PLL_PRESCALE_SHIFT)
| pll_div.n);
/* set PLLK */
snd_soc_write(codec, WM8985_PLL_K_3, pll_div.k & 0x1ff);
snd_soc_write(codec, WM8985_PLL_K_2, (pll_div.k >> 9) & 0x1ff);
snd_soc_write(codec, WM8985_PLL_K_1, (pll_div.k >> 18));
/* set the source of the clock to be the PLL */
snd_soc_update_bits(codec, WM8985_CLOCK_GEN_CONTROL,
WM8985_CLKSEL_MASK, WM8985_CLKSEL);
/* enable the PLL */
snd_soc_update_bits(codec, WM8985_POWER_MANAGEMENT_1,
WM8985_PLLEN_MASK, WM8985_PLLEN);
return 0;
}
static int wm8985_set_sysclk(struct snd_soc_dai *dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec;
struct wm8985_priv *wm8985;
codec = dai->codec;
wm8985 = snd_soc_codec_get_drvdata(codec);
switch (clk_id) {
case WM8985_CLKSRC_MCLK:
snd_soc_update_bits(codec, WM8985_CLOCK_GEN_CONTROL,
WM8985_CLKSEL_MASK, 0);
snd_soc_update_bits(codec, WM8985_POWER_MANAGEMENT_1,
WM8985_PLLEN_MASK, 0);
break;
case WM8985_CLKSRC_PLL:
snd_soc_update_bits(codec, WM8985_CLOCK_GEN_CONTROL,
WM8985_CLKSEL_MASK, WM8985_CLKSEL);
break;
default:
dev_err(dai->dev, "Unknown clock source %d\n", clk_id);
return -EINVAL;
}
wm8985->sysclk = freq;
return 0;
}
static void wm8985_sync_cache(struct snd_soc_codec *codec)
{
short i;
u16 *cache;
if (!codec->cache_sync)
return;
codec->cache_only = 0;
/* restore cache */
cache = codec->reg_cache;
for (i = 0; i < codec->driver->reg_cache_size; i++) {
if (i == WM8985_SOFTWARE_RESET
|| cache[i] == wm8985_reg_defs[i])
continue;
snd_soc_write(codec, i, cache[i]);
}
codec->cache_sync = 0;
}
static int wm8985_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
int ret;
struct wm8985_priv *wm8985;
wm8985 = snd_soc_codec_get_drvdata(codec);
switch (level) {
case SND_SOC_BIAS_ON:
case SND_SOC_BIAS_PREPARE:
/* VMID at 75k */
snd_soc_update_bits(codec, WM8985_POWER_MANAGEMENT_1,
WM8985_VMIDSEL_MASK,
1 << WM8985_VMIDSEL_SHIFT);
break;
case SND_SOC_BIAS_STANDBY:
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
ret = regulator_bulk_enable(ARRAY_SIZE(wm8985->supplies),
wm8985->supplies);
if (ret) {
dev_err(codec->dev,
"Failed to enable supplies: %d\n",
ret);
return ret;
}
wm8985_sync_cache(codec);
/* enable anti-pop features */
snd_soc_update_bits(codec, WM8985_OUT4_TO_ADC,
WM8985_POBCTRL_MASK,
WM8985_POBCTRL);
/* enable thermal shutdown */
snd_soc_update_bits(codec, WM8985_OUTPUT_CTRL0,
WM8985_TSDEN_MASK, WM8985_TSDEN);
snd_soc_update_bits(codec, WM8985_OUTPUT_CTRL0,
WM8985_TSOPCTRL_MASK,
WM8985_TSOPCTRL);
/* enable BIASEN */
snd_soc_update_bits(codec, WM8985_POWER_MANAGEMENT_1,
WM8985_BIASEN_MASK, WM8985_BIASEN);
/* VMID at 75k */
snd_soc_update_bits(codec, WM8985_POWER_MANAGEMENT_1,
WM8985_VMIDSEL_MASK,
1 << WM8985_VMIDSEL_SHIFT);
msleep(500);
/* disable anti-pop features */
snd_soc_update_bits(codec, WM8985_OUT4_TO_ADC,
WM8985_POBCTRL_MASK, 0);
}
/* VMID at 300k */
snd_soc_update_bits(codec, WM8985_POWER_MANAGEMENT_1,
WM8985_VMIDSEL_MASK,
2 << WM8985_VMIDSEL_SHIFT);
break;
case SND_SOC_BIAS_OFF:
/* disable thermal shutdown */
snd_soc_update_bits(codec, WM8985_OUTPUT_CTRL0,
WM8985_TSOPCTRL_MASK, 0);
snd_soc_update_bits(codec, WM8985_OUTPUT_CTRL0,
WM8985_TSDEN_MASK, 0);
/* disable VMIDSEL and BIASEN */
snd_soc_update_bits(codec, WM8985_POWER_MANAGEMENT_1,
WM8985_VMIDSEL_MASK | WM8985_BIASEN_MASK,
0);
snd_soc_write(codec, WM8985_POWER_MANAGEMENT_1, 0);
snd_soc_write(codec, WM8985_POWER_MANAGEMENT_2, 0);
snd_soc_write(codec, WM8985_POWER_MANAGEMENT_3, 0);
codec->cache_sync = 1;
regulator_bulk_disable(ARRAY_SIZE(wm8985->supplies),
wm8985->supplies);
break;
}
codec->dapm.bias_level = level;
return 0;
}
#ifdef CONFIG_PM
static int wm8985_suspend(struct snd_soc_codec *codec)
{
wm8985_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int wm8985_resume(struct snd_soc_codec *codec)
{
wm8985_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
}
#else
#define wm8985_suspend NULL
#define wm8985_resume NULL
#endif
static int wm8985_remove(struct snd_soc_codec *codec)
{
struct wm8985_priv *wm8985;
wm8985 = snd_soc_codec_get_drvdata(codec);
wm8985_set_bias_level(codec, SND_SOC_BIAS_OFF);
regulator_bulk_free(ARRAY_SIZE(wm8985->supplies), wm8985->supplies);
return 0;
}
static int wm8985_probe(struct snd_soc_codec *codec)
{
size_t i;
struct wm8985_priv *wm8985;
int ret;
u16 *cache;
wm8985 = snd_soc_codec_get_drvdata(codec);
ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8985->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(wm8985->supplies); i++)
wm8985->supplies[i].supply = wm8985_supply_names[i];
ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8985->supplies),
wm8985->supplies);
if (ret) {
dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
return ret;
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm8985->supplies),
wm8985->supplies);
if (ret) {
dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
goto err_reg_get;
}
ret = wm8985_reset(codec);
if (ret < 0) {
dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
goto err_reg_enable;
}
cache = codec->reg_cache;
/* latch volume update bits */
for (i = 0; i < ARRAY_SIZE(volume_update_regs); ++i)
cache[volume_update_regs[i]] |= 0x100;
/* enable BIASCUT */
cache[WM8985_BIAS_CTRL] |= WM8985_BIASCUT;
codec->cache_sync = 1;
snd_soc_add_controls(codec, wm8985_snd_controls,
ARRAY_SIZE(wm8985_snd_controls));
wm8985_add_widgets(codec);
wm8985_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
err_reg_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8985->supplies), wm8985->supplies);
err_reg_get:
regulator_bulk_free(ARRAY_SIZE(wm8985->supplies), wm8985->supplies);
return ret;
}
static const struct snd_soc_dai_ops wm8985_dai_ops = {
.digital_mute = wm8985_dac_mute,
.hw_params = wm8985_hw_params,
.set_fmt = wm8985_set_fmt,
.set_sysclk = wm8985_set_sysclk,
.set_pll = wm8985_set_pll
};
#define WM8985_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_driver wm8985_dai = {
.name = "wm8985-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = WM8985_FORMATS,
},
.capture = {
.stream_name = "Capture",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = WM8985_FORMATS,
},
.ops = &wm8985_dai_ops,
.symmetric_rates = 1
};
static struct snd_soc_codec_driver soc_codec_dev_wm8985 = {
.probe = wm8985_probe,
.remove = wm8985_remove,
.suspend = wm8985_suspend,
.resume = wm8985_resume,
.set_bias_level = wm8985_set_bias_level,
.reg_cache_size = ARRAY_SIZE(wm8985_reg_defs),
.reg_word_size = sizeof(u16),
.reg_cache_default = wm8985_reg_defs
};
#if defined(CONFIG_SPI_MASTER)
static int __devinit wm8985_spi_probe(struct spi_device *spi)
{
struct wm8985_priv *wm8985;
int ret;
wm8985 = kzalloc(sizeof *wm8985, GFP_KERNEL);
if (!wm8985)
return -ENOMEM;
wm8985->control_type = SND_SOC_SPI;
spi_set_drvdata(spi, wm8985);
ret = snd_soc_register_codec(&spi->dev,
&soc_codec_dev_wm8985, &wm8985_dai, 1);
if (ret < 0)
kfree(wm8985);
return ret;
}
static int __devexit wm8985_spi_remove(struct spi_device *spi)
{
snd_soc_unregister_codec(&spi->dev);
kfree(spi_get_drvdata(spi));
return 0;
}
static struct spi_driver wm8985_spi_driver = {
.driver = {
.name = "wm8985",
.owner = THIS_MODULE,
},
.probe = wm8985_spi_probe,
.remove = __devexit_p(wm8985_spi_remove)
};
#endif
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int wm8985_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8985_priv *wm8985;
int ret;
wm8985 = kzalloc(sizeof *wm8985, GFP_KERNEL);
if (!wm8985)
return -ENOMEM;
wm8985->control_type = SND_SOC_I2C;
i2c_set_clientdata(i2c, wm8985);
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8985, &wm8985_dai, 1);
if (ret < 0)
kfree(wm8985);
return ret;
}
static __devexit int wm8985_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
kfree(i2c_get_clientdata(client));
return 0;
}
static const struct i2c_device_id wm8985_i2c_id[] = {
{ "wm8985", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, wm8985_i2c_id);
static struct i2c_driver wm8985_i2c_driver = {
.driver = {
.name = "wm8985",
.owner = THIS_MODULE,
},
.probe = wm8985_i2c_probe,
.remove = __devexit_p(wm8985_i2c_remove),
.id_table = wm8985_i2c_id
};
#endif
static int __init wm8985_modinit(void)
{
int ret = 0;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
ret = i2c_add_driver(&wm8985_i2c_driver);
if (ret) {
printk(KERN_ERR "Failed to register wm8985 I2C driver: %d\n",
ret);
}
#endif
#if defined(CONFIG_SPI_MASTER)
ret = spi_register_driver(&wm8985_spi_driver);
if (ret != 0) {
printk(KERN_ERR "Failed to register wm8985 SPI driver: %d\n",
ret);
}
#endif
return ret;
}
module_init(wm8985_modinit);
static void __exit wm8985_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_del_driver(&wm8985_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
spi_unregister_driver(&wm8985_spi_driver);
#endif
}
module_exit(wm8985_exit);
MODULE_DESCRIPTION("ASoC WM8985 driver");
MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
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