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kernel-ark/sound/soc/codecs/wm8995.c
Liam Girdwood 022658beab ASoC: core: Add support for DAI and machine kcontrols. 
Currently ASoC can only add kcontrols using codec and platform component device
handles. It's also desirable to add kcontrols for DAIs (i.e. McBSP) and for
SoC card machine drivers too. This allows the kcontrol to have a direct handle to
the parent ASoC component DAI/SoC Card/Platform/Codec device and hence easily
get it's private data.

This change makes snd_soc_add_controls() static and wraps it in the folowing
calls (card and dai are new) :-

snd_soc_add_card_controls()
snd_soc_add_codec_controls()
snd_soc_add_dai_controls()
snd_soc_add_platform_controls()

This patch also does a lot of small mechanical changes in individual codec drivers
to replace snd_soc_add_controls() with snd_soc_add_codec_controls().

It also updates the McBSP DAI driver to use snd_soc_add_dai_controls().

Finally, it updates the existing machine drivers that register controls to either :-

1) Use snd_soc_add_card_controls() where no direct codec control is required.
2) Use snd_soc_add_codec_controls() where there is direct codec control.

In the case of 1) above we also update the machine drivers to get the correct
component data pointers from the kcontrol (rather than getting the machine pointer
via the codec pointer).

Signed-off-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-02-04 12:40:11 +00:00

2416 lines
62 KiB
C
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/*
* wm8995.c -- WM8995 ALSA SoC Audio driver
*
* Copyright 2010 Wolfson Microelectronics plc
*
* Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
*
* Based on wm8994.c and wm_hubs.c by Mark Brown
*
* 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.
*/
#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/regmap.h>
#include <linux/spi/spi.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include "wm8995.h"
#define WM8995_NUM_SUPPLIES 8
static const char *wm8995_supply_names[WM8995_NUM_SUPPLIES] = {
"DCVDD",
"DBVDD1",
"DBVDD2",
"DBVDD3",
"AVDD1",
"AVDD2",
"CPVDD",
"MICVDD"
};
static struct reg_default wm8995_reg_defaults[] = {
{ 0, 0x8995 },
{ 5, 0x0100 },
{ 16, 0x000b },
{ 17, 0x000b },
{ 24, 0x02c0 },
{ 25, 0x02c0 },
{ 26, 0x02c0 },
{ 27, 0x02c0 },
{ 28, 0x000f },
{ 32, 0x0005 },
{ 33, 0x0005 },
{ 40, 0x0003 },
{ 41, 0x0013 },
{ 48, 0x0004 },
{ 56, 0x09f8 },
{ 64, 0x1f25 },
{ 69, 0x0004 },
{ 82, 0xaaaa },
{ 84, 0x2a2a },
{ 146, 0x0060 },
{ 256, 0x0002 },
{ 257, 0x8004 },
{ 520, 0x0010 },
{ 528, 0x0083 },
{ 529, 0x0083 },
{ 548, 0x0c80 },
{ 580, 0x0c80 },
{ 768, 0x4050 },
{ 769, 0x4000 },
{ 771, 0x0040 },
{ 772, 0x0040 },
{ 773, 0x0040 },
{ 774, 0x0004 },
{ 775, 0x0100 },
{ 784, 0x4050 },
{ 785, 0x4000 },
{ 787, 0x0040 },
{ 788, 0x0040 },
{ 789, 0x0040 },
{ 1024, 0x00c0 },
{ 1025, 0x00c0 },
{ 1026, 0x00c0 },
{ 1027, 0x00c0 },
{ 1028, 0x00c0 },
{ 1029, 0x00c0 },
{ 1030, 0x00c0 },
{ 1031, 0x00c0 },
{ 1056, 0x0200 },
{ 1057, 0x0010 },
{ 1058, 0x0200 },
{ 1059, 0x0010 },
{ 1088, 0x0098 },
{ 1089, 0x0845 },
{ 1104, 0x0098 },
{ 1105, 0x0845 },
{ 1152, 0x6318 },
{ 1153, 0x6300 },
{ 1154, 0x0fca },
{ 1155, 0x0400 },
{ 1156, 0x00d8 },
{ 1157, 0x1eb5 },
{ 1158, 0xf145 },
{ 1159, 0x0b75 },
{ 1160, 0x01c5 },
{ 1161, 0x1c58 },
{ 1162, 0xf373 },
{ 1163, 0x0a54 },
{ 1164, 0x0558 },
{ 1165, 0x168e },
{ 1166, 0xf829 },
{ 1167, 0x07ad },
{ 1168, 0x1103 },
{ 1169, 0x0564 },
{ 1170, 0x0559 },
{ 1171, 0x4000 },
{ 1184, 0x6318 },
{ 1185, 0x6300 },
{ 1186, 0x0fca },
{ 1187, 0x0400 },
{ 1188, 0x00d8 },
{ 1189, 0x1eb5 },
{ 1190, 0xf145 },
{ 1191, 0x0b75 },
{ 1192, 0x01c5 },
{ 1193, 0x1c58 },
{ 1194, 0xf373 },
{ 1195, 0x0a54 },
{ 1196, 0x0558 },
{ 1197, 0x168e },
{ 1198, 0xf829 },
{ 1199, 0x07ad },
{ 1200, 0x1103 },
{ 1201, 0x0564 },
{ 1202, 0x0559 },
{ 1203, 0x4000 },
{ 1280, 0x00c0 },
{ 1281, 0x00c0 },
{ 1282, 0x00c0 },
{ 1283, 0x00c0 },
{ 1312, 0x0200 },
{ 1313, 0x0010 },
{ 1344, 0x0098 },
{ 1345, 0x0845 },
{ 1408, 0x6318 },
{ 1409, 0x6300 },
{ 1410, 0x0fca },
{ 1411, 0x0400 },
{ 1412, 0x00d8 },
{ 1413, 0x1eb5 },
{ 1414, 0xf145 },
{ 1415, 0x0b75 },
{ 1416, 0x01c5 },
{ 1417, 0x1c58 },
{ 1418, 0xf373 },
{ 1419, 0x0a54 },
{ 1420, 0x0558 },
{ 1421, 0x168e },
{ 1422, 0xf829 },
{ 1423, 0x07ad },
{ 1424, 0x1103 },
{ 1425, 0x0564 },
{ 1426, 0x0559 },
{ 1427, 0x4000 },
{ 1568, 0x0002 },
{ 1792, 0xa100 },
{ 1793, 0xa101 },
{ 1794, 0xa101 },
{ 1795, 0xa101 },
{ 1796, 0xa101 },
{ 1797, 0xa101 },
{ 1798, 0xa101 },
{ 1799, 0xa101 },
{ 1800, 0xa101 },
{ 1801, 0xa101 },
{ 1802, 0xa101 },
{ 1803, 0xa101 },
{ 1804, 0xa101 },
{ 1805, 0xa101 },
{ 1825, 0x0055 },
{ 1848, 0x3fff },
{ 1849, 0x1fff },
{ 2049, 0x0001 },
{ 2050, 0x0069 },
{ 2056, 0x0002 },
{ 2057, 0x0003 },
{ 2058, 0x0069 },
{ 12288, 0x0001 },
{ 12289, 0x0001 },
{ 12291, 0x0006 },
{ 12292, 0x0040 },
{ 12293, 0x0001 },
{ 12294, 0x000f },
{ 12295, 0x0006 },
{ 12296, 0x0001 },
{ 12297, 0x0003 },
{ 12298, 0x0104 },
{ 12300, 0x0060 },
{ 12301, 0x0011 },
{ 12302, 0x0401 },
{ 12304, 0x0050 },
{ 12305, 0x0003 },
{ 12306, 0x0100 },
{ 12308, 0x0051 },
{ 12309, 0x0003 },
{ 12310, 0x0104 },
{ 12311, 0x000a },
{ 12312, 0x0060 },
{ 12313, 0x003b },
{ 12314, 0x0502 },
{ 12315, 0x0100 },
{ 12316, 0x2fff },
{ 12320, 0x2fff },
{ 12324, 0x2fff },
{ 12328, 0x2fff },
{ 12332, 0x2fff },
{ 12336, 0x2fff },
{ 12340, 0x2fff },
{ 12344, 0x2fff },
{ 12348, 0x2fff },
{ 12352, 0x0001 },
{ 12353, 0x0001 },
{ 12355, 0x0006 },
{ 12356, 0x0040 },
{ 12357, 0x0001 },
{ 12358, 0x000f },
{ 12359, 0x0006 },
{ 12360, 0x0001 },
{ 12361, 0x0003 },
{ 12362, 0x0104 },
{ 12364, 0x0060 },
{ 12365, 0x0011 },
{ 12366, 0x0401 },
{ 12368, 0x0050 },
{ 12369, 0x0003 },
{ 12370, 0x0100 },
{ 12372, 0x0060 },
{ 12373, 0x003b },
{ 12374, 0x0502 },
{ 12375, 0x0100 },
{ 12376, 0x2fff },
{ 12380, 0x2fff },
{ 12384, 0x2fff },
{ 12388, 0x2fff },
{ 12392, 0x2fff },
{ 12396, 0x2fff },
{ 12400, 0x2fff },
{ 12404, 0x2fff },
{ 12408, 0x2fff },
{ 12412, 0x2fff },
{ 12416, 0x0001 },
{ 12417, 0x0001 },
{ 12419, 0x0006 },
{ 12420, 0x0040 },
{ 12421, 0x0001 },
{ 12422, 0x000f },
{ 12423, 0x0006 },
{ 12424, 0x0001 },
{ 12425, 0x0003 },
{ 12426, 0x0106 },
{ 12428, 0x0061 },
{ 12429, 0x0011 },
{ 12430, 0x0401 },
{ 12432, 0x0050 },
{ 12433, 0x0003 },
{ 12434, 0x0102 },
{ 12436, 0x0051 },
{ 12437, 0x0003 },
{ 12438, 0x0106 },
{ 12439, 0x000a },
{ 12440, 0x0061 },
{ 12441, 0x003b },
{ 12442, 0x0502 },
{ 12443, 0x0100 },
{ 12444, 0x2fff },
{ 12448, 0x2fff },
{ 12452, 0x2fff },
{ 12456, 0x2fff },
{ 12460, 0x2fff },
{ 12464, 0x2fff },
{ 12468, 0x2fff },
{ 12472, 0x2fff },
{ 12476, 0x2fff },
{ 12480, 0x0001 },
{ 12481, 0x0001 },
{ 12483, 0x0006 },
{ 12484, 0x0040 },
{ 12485, 0x0001 },
{ 12486, 0x000f },
{ 12487, 0x0006 },
{ 12488, 0x0001 },
{ 12489, 0x0003 },
{ 12490, 0x0106 },
{ 12492, 0x0061 },
{ 12493, 0x0011 },
{ 12494, 0x0401 },
{ 12496, 0x0050 },
{ 12497, 0x0003 },
{ 12498, 0x0102 },
{ 12500, 0x0061 },
{ 12501, 0x003b },
{ 12502, 0x0502 },
{ 12503, 0x0100 },
{ 12504, 0x2fff },
{ 12508, 0x2fff },
{ 12512, 0x2fff },
{ 12516, 0x2fff },
{ 12520, 0x2fff },
{ 12524, 0x2fff },
{ 12528, 0x2fff },
{ 12532, 0x2fff },
{ 12536, 0x2fff },
{ 12540, 0x2fff },
{ 12544, 0x0060 },
{ 12546, 0x0601 },
{ 12548, 0x0050 },
{ 12550, 0x0100 },
{ 12552, 0x0001 },
{ 12554, 0x0104 },
{ 12555, 0x0100 },
{ 12556, 0x2fff },
{ 12560, 0x2fff },
{ 12564, 0x2fff },
{ 12568, 0x2fff },
{ 12572, 0x2fff },
{ 12576, 0x2fff },
{ 12580, 0x2fff },
{ 12584, 0x2fff },
{ 12588, 0x2fff },
{ 12592, 0x2fff },
{ 12596, 0x2fff },
{ 12600, 0x2fff },
{ 12604, 0x2fff },
{ 12608, 0x0061 },
{ 12610, 0x0601 },
{ 12612, 0x0050 },
{ 12614, 0x0102 },
{ 12616, 0x0001 },
{ 12618, 0x0106 },
{ 12619, 0x0100 },
{ 12620, 0x2fff },
{ 12624, 0x2fff },
{ 12628, 0x2fff },
{ 12632, 0x2fff },
{ 12636, 0x2fff },
{ 12640, 0x2fff },
{ 12644, 0x2fff },
{ 12648, 0x2fff },
{ 12652, 0x2fff },
{ 12656, 0x2fff },
{ 12660, 0x2fff },
{ 12664, 0x2fff },
{ 12668, 0x2fff },
{ 12672, 0x0060 },
{ 12674, 0x0601 },
{ 12676, 0x0061 },
{ 12678, 0x0601 },
{ 12680, 0x0050 },
{ 12682, 0x0300 },
{ 12684, 0x0001 },
{ 12686, 0x0304 },
{ 12688, 0x0040 },
{ 12690, 0x000f },
{ 12692, 0x0001 },
{ 12695, 0x0100 },
};
struct fll_config {
int src;
int in;
int out;
};
struct wm8995_priv {
struct regmap *regmap;
int sysclk[2];
int mclk[2];
int aifclk[2];
struct fll_config fll[2], fll_suspend[2];
struct regulator_bulk_data supplies[WM8995_NUM_SUPPLIES];
struct notifier_block disable_nb[WM8995_NUM_SUPPLIES];
struct snd_soc_codec *codec;
};
/*
* We can't use the same notifier block for more than one supply and
* there's no way I can see to get from a callback to the caller
* except container_of().
*/
#define WM8995_REGULATOR_EVENT(n) \
static int wm8995_regulator_event_##n(struct notifier_block *nb, \
unsigned long event, void *data) \
{ \
struct wm8995_priv *wm8995 = container_of(nb, struct wm8995_priv, \
disable_nb[n]); \
if (event & REGULATOR_EVENT_DISABLE) { \
regcache_mark_dirty(wm8995->regmap); \
} \
return 0; \
}
WM8995_REGULATOR_EVENT(0)
WM8995_REGULATOR_EVENT(1)
WM8995_REGULATOR_EVENT(2)
WM8995_REGULATOR_EVENT(3)
WM8995_REGULATOR_EVENT(4)
WM8995_REGULATOR_EVENT(5)
WM8995_REGULATOR_EVENT(6)
WM8995_REGULATOR_EVENT(7)
static const DECLARE_TLV_DB_SCALE(digital_tlv, -7200, 75, 1);
static const DECLARE_TLV_DB_SCALE(in1lr_pga_tlv, -1650, 150, 0);
static const DECLARE_TLV_DB_SCALE(in1l_boost_tlv, 0, 600, 0);
static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 150, 0);
static const char *in1l_text[] = {
"Differential", "Single-ended IN1LN", "Single-ended IN1LP"
};
static const SOC_ENUM_SINGLE_DECL(in1l_enum, WM8995_LEFT_LINE_INPUT_CONTROL,
2, in1l_text);
static const char *in1r_text[] = {
"Differential", "Single-ended IN1RN", "Single-ended IN1RP"
};
static const SOC_ENUM_SINGLE_DECL(in1r_enum, WM8995_LEFT_LINE_INPUT_CONTROL,
0, in1r_text);
static const char *dmic_src_text[] = {
"DMICDAT1", "DMICDAT2", "DMICDAT3"
};
static const SOC_ENUM_SINGLE_DECL(dmic_src1_enum, WM8995_POWER_MANAGEMENT_5,
8, dmic_src_text);
static const SOC_ENUM_SINGLE_DECL(dmic_src2_enum, WM8995_POWER_MANAGEMENT_5,
6, dmic_src_text);
static const struct snd_kcontrol_new wm8995_snd_controls[] = {
SOC_DOUBLE_R_TLV("DAC1 Volume", WM8995_DAC1_LEFT_VOLUME,
WM8995_DAC1_RIGHT_VOLUME, 0, 96, 0, digital_tlv),
SOC_DOUBLE_R("DAC1 Switch", WM8995_DAC1_LEFT_VOLUME,
WM8995_DAC1_RIGHT_VOLUME, 9, 1, 1),
SOC_DOUBLE_R_TLV("DAC2 Volume", WM8995_DAC2_LEFT_VOLUME,
WM8995_DAC2_RIGHT_VOLUME, 0, 96, 0, digital_tlv),
SOC_DOUBLE_R("DAC2 Switch", WM8995_DAC2_LEFT_VOLUME,
WM8995_DAC2_RIGHT_VOLUME, 9, 1, 1),
SOC_DOUBLE_R_TLV("AIF1DAC1 Volume", WM8995_AIF1_DAC1_LEFT_VOLUME,
WM8995_AIF1_DAC1_RIGHT_VOLUME, 0, 96, 0, digital_tlv),
SOC_DOUBLE_R_TLV("AIF1DAC2 Volume", WM8995_AIF1_DAC2_LEFT_VOLUME,
WM8995_AIF1_DAC2_RIGHT_VOLUME, 0, 96, 0, digital_tlv),
SOC_DOUBLE_R_TLV("AIF2DAC Volume", WM8995_AIF2_DAC_LEFT_VOLUME,
WM8995_AIF2_DAC_RIGHT_VOLUME, 0, 96, 0, digital_tlv),
SOC_DOUBLE_R_TLV("IN1LR Volume", WM8995_LEFT_LINE_INPUT_1_VOLUME,
WM8995_RIGHT_LINE_INPUT_1_VOLUME, 0, 31, 0, in1lr_pga_tlv),
SOC_SINGLE_TLV("IN1L Boost", WM8995_LEFT_LINE_INPUT_CONTROL,
4, 3, 0, in1l_boost_tlv),
SOC_ENUM("IN1L Mode", in1l_enum),
SOC_ENUM("IN1R Mode", in1r_enum),
SOC_ENUM("DMIC1 SRC", dmic_src1_enum),
SOC_ENUM("DMIC2 SRC", dmic_src2_enum),
SOC_DOUBLE_TLV("DAC1 Sidetone Volume", WM8995_DAC1_MIXER_VOLUMES, 0, 5,
24, 0, sidetone_tlv),
SOC_DOUBLE_TLV("DAC2 Sidetone Volume", WM8995_DAC2_MIXER_VOLUMES, 0, 5,
24, 0, sidetone_tlv),
SOC_DOUBLE_R_TLV("AIF1ADC1 Volume", WM8995_AIF1_ADC1_LEFT_VOLUME,
WM8995_AIF1_ADC1_RIGHT_VOLUME, 0, 96, 0, digital_tlv),
SOC_DOUBLE_R_TLV("AIF1ADC2 Volume", WM8995_AIF1_ADC2_LEFT_VOLUME,
WM8995_AIF1_ADC2_RIGHT_VOLUME, 0, 96, 0, digital_tlv),
SOC_DOUBLE_R_TLV("AIF2ADC Volume", WM8995_AIF2_ADC_LEFT_VOLUME,
WM8995_AIF2_ADC_RIGHT_VOLUME, 0, 96, 0, digital_tlv)
};
static void wm8995_update_class_w(struct snd_soc_codec *codec)
{
int enable = 1;
int source = 0; /* GCC flow analysis can't track enable */
int reg, reg_r;
/* We also need the same setting for L/R and only one path */
reg = snd_soc_read(codec, WM8995_DAC1_LEFT_MIXER_ROUTING);
switch (reg) {
case WM8995_AIF2DACL_TO_DAC1L:
dev_dbg(codec->dev, "Class W source AIF2DAC\n");
source = 2 << WM8995_CP_DYN_SRC_SEL_SHIFT;
break;
case WM8995_AIF1DAC2L_TO_DAC1L:
dev_dbg(codec->dev, "Class W source AIF1DAC2\n");
source = 1 << WM8995_CP_DYN_SRC_SEL_SHIFT;
break;
case WM8995_AIF1DAC1L_TO_DAC1L:
dev_dbg(codec->dev, "Class W source AIF1DAC1\n");
source = 0 << WM8995_CP_DYN_SRC_SEL_SHIFT;
break;
default:
dev_dbg(codec->dev, "DAC mixer setting: %x\n", reg);
enable = 0;
break;
}
reg_r = snd_soc_read(codec, WM8995_DAC1_RIGHT_MIXER_ROUTING);
if (reg_r != reg) {
dev_dbg(codec->dev, "Left and right DAC mixers different\n");
enable = 0;
}
if (enable) {
dev_dbg(codec->dev, "Class W enabled\n");
snd_soc_update_bits(codec, WM8995_CLASS_W_1,
WM8995_CP_DYN_PWR_MASK |
WM8995_CP_DYN_SRC_SEL_MASK,
source | WM8995_CP_DYN_PWR);
} else {
dev_dbg(codec->dev, "Class W disabled\n");
snd_soc_update_bits(codec, WM8995_CLASS_W_1,
WM8995_CP_DYN_PWR_MASK, 0);
}
}
static int check_clk_sys(struct snd_soc_dapm_widget *source,
struct snd_soc_dapm_widget *sink)
{
unsigned int reg;
const char *clk;
reg = snd_soc_read(source->codec, WM8995_CLOCKING_1);
/* Check what we're currently using for CLK_SYS */
if (reg & WM8995_SYSCLK_SRC)
clk = "AIF2CLK";
else
clk = "AIF1CLK";
return !strcmp(source->name, clk);
}
static int wm8995_put_class_w(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
struct snd_soc_dapm_widget *w = wlist->widgets[0];
struct snd_soc_codec *codec;
int ret;
codec = w->codec;
ret = snd_soc_dapm_put_volsw(kcontrol, ucontrol);
wm8995_update_class_w(codec);
return ret;
}
static int hp_supply_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec;
struct wm8995_priv *wm8995;
codec = w->codec;
wm8995 = snd_soc_codec_get_drvdata(codec);
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
/* Enable the headphone amp */
snd_soc_update_bits(codec, WM8995_POWER_MANAGEMENT_1,
WM8995_HPOUT1L_ENA_MASK |
WM8995_HPOUT1R_ENA_MASK,
WM8995_HPOUT1L_ENA |
WM8995_HPOUT1R_ENA);
/* Enable the second stage */
snd_soc_update_bits(codec, WM8995_ANALOGUE_HP_1,
WM8995_HPOUT1L_DLY_MASK |
WM8995_HPOUT1R_DLY_MASK,
WM8995_HPOUT1L_DLY |
WM8995_HPOUT1R_DLY);
break;
case SND_SOC_DAPM_PRE_PMD:
snd_soc_update_bits(codec, WM8995_CHARGE_PUMP_1,
WM8995_CP_ENA_MASK, 0);
break;
}
return 0;
}
static void dc_servo_cmd(struct snd_soc_codec *codec,
unsigned int reg, unsigned int val, unsigned int mask)
{
int timeout = 10;
dev_dbg(codec->dev, "%s: reg = %#x, val = %#x, mask = %#x\n",
__func__, reg, val, mask);
snd_soc_write(codec, reg, val);
while (timeout--) {
msleep(10);
val = snd_soc_read(codec, WM8995_DC_SERVO_READBACK_0);
if ((val & mask) == mask)
return;
}
dev_err(codec->dev, "Timed out waiting for DC Servo\n");
}
static int hp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec;
unsigned int reg;
codec = w->codec;
reg = snd_soc_read(codec, WM8995_ANALOGUE_HP_1);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
snd_soc_update_bits(codec, WM8995_CHARGE_PUMP_1,
WM8995_CP_ENA_MASK, WM8995_CP_ENA);
msleep(5);
snd_soc_update_bits(codec, WM8995_POWER_MANAGEMENT_1,
WM8995_HPOUT1L_ENA_MASK |
WM8995_HPOUT1R_ENA_MASK,
WM8995_HPOUT1L_ENA | WM8995_HPOUT1R_ENA);
udelay(20);
reg |= WM8995_HPOUT1L_DLY | WM8995_HPOUT1R_DLY;
snd_soc_write(codec, WM8995_ANALOGUE_HP_1, reg);
snd_soc_write(codec, WM8995_DC_SERVO_1, WM8995_DCS_ENA_CHAN_0 |
WM8995_DCS_ENA_CHAN_1);
dc_servo_cmd(codec, WM8995_DC_SERVO_2,
WM8995_DCS_TRIG_STARTUP_0 |
WM8995_DCS_TRIG_STARTUP_1,
WM8995_DCS_TRIG_DAC_WR_0 |
WM8995_DCS_TRIG_DAC_WR_1);
reg |= WM8995_HPOUT1R_OUTP | WM8995_HPOUT1R_RMV_SHORT |
WM8995_HPOUT1L_OUTP | WM8995_HPOUT1L_RMV_SHORT;
snd_soc_write(codec, WM8995_ANALOGUE_HP_1, reg);
break;
case SND_SOC_DAPM_PRE_PMD:
snd_soc_update_bits(codec, WM8995_ANALOGUE_HP_1,
WM8995_HPOUT1L_OUTP_MASK |
WM8995_HPOUT1R_OUTP_MASK |
WM8995_HPOUT1L_RMV_SHORT_MASK |
WM8995_HPOUT1R_RMV_SHORT_MASK, 0);
snd_soc_update_bits(codec, WM8995_ANALOGUE_HP_1,
WM8995_HPOUT1L_DLY_MASK |
WM8995_HPOUT1R_DLY_MASK, 0);
snd_soc_write(codec, WM8995_DC_SERVO_1, 0);
snd_soc_update_bits(codec, WM8995_POWER_MANAGEMENT_1,
WM8995_HPOUT1L_ENA_MASK |
WM8995_HPOUT1R_ENA_MASK,
0);
break;
}
return 0;
}
static int configure_aif_clock(struct snd_soc_codec *codec, int aif)
{
struct wm8995_priv *wm8995;
int rate;
int reg1 = 0;
int offset;
wm8995 = snd_soc_codec_get_drvdata(codec);
if (aif)
offset = 4;
else
offset = 0;
switch (wm8995->sysclk[aif]) {
case WM8995_SYSCLK_MCLK1:
rate = wm8995->mclk[0];
break;
case WM8995_SYSCLK_MCLK2:
reg1 |= 0x8;
rate = wm8995->mclk[1];
break;
case WM8995_SYSCLK_FLL1:
reg1 |= 0x10;
rate = wm8995->fll[0].out;
break;
case WM8995_SYSCLK_FLL2:
reg1 |= 0x18;
rate = wm8995->fll[1].out;
break;
default:
return -EINVAL;
}
if (rate >= 13500000) {
rate /= 2;
reg1 |= WM8995_AIF1CLK_DIV;
dev_dbg(codec->dev, "Dividing AIF%d clock to %dHz\n",
aif + 1, rate);
}
wm8995->aifclk[aif] = rate;
snd_soc_update_bits(codec, WM8995_AIF1_CLOCKING_1 + offset,
WM8995_AIF1CLK_SRC_MASK | WM8995_AIF1CLK_DIV_MASK,
reg1);
return 0;
}
static int configure_clock(struct snd_soc_codec *codec)
{
struct wm8995_priv *wm8995;
int change, new;
wm8995 = snd_soc_codec_get_drvdata(codec);
/* Bring up the AIF clocks first */
configure_aif_clock(codec, 0);
configure_aif_clock(codec, 1);
/*
* Then switch CLK_SYS over to the higher of them; a change
* can only happen as a result of a clocking change which can
* only be made outside of DAPM so we can safely redo the
* clocking.
*/
/* If they're equal it doesn't matter which is used */
if (wm8995->aifclk[0] == wm8995->aifclk[1])
return 0;
if (wm8995->aifclk[0] < wm8995->aifclk[1])
new = WM8995_SYSCLK_SRC;
else
new = 0;
change = snd_soc_update_bits(codec, WM8995_CLOCKING_1,
WM8995_SYSCLK_SRC_MASK, new);
if (!change)
return 0;
snd_soc_dapm_sync(&codec->dapm);
return 0;
}
static int clk_sys_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec;
codec = w->codec;
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
return configure_clock(codec);
case SND_SOC_DAPM_POST_PMD:
configure_clock(codec);
break;
}
return 0;
}
static const char *sidetone_text[] = {
"ADC/DMIC1", "DMIC2",
};
static const struct soc_enum sidetone1_enum =
SOC_ENUM_SINGLE(WM8995_SIDETONE, 0, 2, sidetone_text);
static const struct snd_kcontrol_new sidetone1_mux =
SOC_DAPM_ENUM("Left Sidetone Mux", sidetone1_enum);
static const struct soc_enum sidetone2_enum =
SOC_ENUM_SINGLE(WM8995_SIDETONE, 1, 2, sidetone_text);
static const struct snd_kcontrol_new sidetone2_mux =
SOC_DAPM_ENUM("Right Sidetone Mux", sidetone2_enum);
static const struct snd_kcontrol_new aif1adc1l_mix[] = {
SOC_DAPM_SINGLE("ADC/DMIC Switch", WM8995_AIF1_ADC1_LEFT_MIXER_ROUTING,
1, 1, 0),
SOC_DAPM_SINGLE("AIF2 Switch", WM8995_AIF1_ADC1_LEFT_MIXER_ROUTING,
0, 1, 0),
};
static const struct snd_kcontrol_new aif1adc1r_mix[] = {
SOC_DAPM_SINGLE("ADC/DMIC Switch", WM8995_AIF1_ADC1_RIGHT_MIXER_ROUTING,
1, 1, 0),
SOC_DAPM_SINGLE("AIF2 Switch", WM8995_AIF1_ADC1_RIGHT_MIXER_ROUTING,
0, 1, 0),
};
static const struct snd_kcontrol_new aif1adc2l_mix[] = {
SOC_DAPM_SINGLE("DMIC Switch", WM8995_AIF1_ADC2_LEFT_MIXER_ROUTING,
1, 1, 0),
SOC_DAPM_SINGLE("AIF2 Switch", WM8995_AIF1_ADC2_LEFT_MIXER_ROUTING,
0, 1, 0),
};
static const struct snd_kcontrol_new aif1adc2r_mix[] = {
SOC_DAPM_SINGLE("DMIC Switch", WM8995_AIF1_ADC2_RIGHT_MIXER_ROUTING,
1, 1, 0),
SOC_DAPM_SINGLE("AIF2 Switch", WM8995_AIF1_ADC2_RIGHT_MIXER_ROUTING,
0, 1, 0),
};
static const struct snd_kcontrol_new dac1l_mix[] = {
WM8995_CLASS_W_SWITCH("Right Sidetone Switch", WM8995_DAC1_LEFT_MIXER_ROUTING,
5, 1, 0),
WM8995_CLASS_W_SWITCH("Left Sidetone Switch", WM8995_DAC1_LEFT_MIXER_ROUTING,
4, 1, 0),
WM8995_CLASS_W_SWITCH("AIF2 Switch", WM8995_DAC1_LEFT_MIXER_ROUTING,
2, 1, 0),
WM8995_CLASS_W_SWITCH("AIF1.2 Switch", WM8995_DAC1_LEFT_MIXER_ROUTING,
1, 1, 0),
WM8995_CLASS_W_SWITCH("AIF1.1 Switch", WM8995_DAC1_LEFT_MIXER_ROUTING,
0, 1, 0),
};
static const struct snd_kcontrol_new dac1r_mix[] = {
WM8995_CLASS_W_SWITCH("Right Sidetone Switch", WM8995_DAC1_RIGHT_MIXER_ROUTING,
5, 1, 0),
WM8995_CLASS_W_SWITCH("Left Sidetone Switch", WM8995_DAC1_RIGHT_MIXER_ROUTING,
4, 1, 0),
WM8995_CLASS_W_SWITCH("AIF2 Switch", WM8995_DAC1_RIGHT_MIXER_ROUTING,
2, 1, 0),
WM8995_CLASS_W_SWITCH("AIF1.2 Switch", WM8995_DAC1_RIGHT_MIXER_ROUTING,
1, 1, 0),
WM8995_CLASS_W_SWITCH("AIF1.1 Switch", WM8995_DAC1_RIGHT_MIXER_ROUTING,
0, 1, 0),
};
static const struct snd_kcontrol_new aif2dac2l_mix[] = {
SOC_DAPM_SINGLE("Right Sidetone Switch", WM8995_DAC2_LEFT_MIXER_ROUTING,
5, 1, 0),
SOC_DAPM_SINGLE("Left Sidetone Switch", WM8995_DAC2_LEFT_MIXER_ROUTING,
4, 1, 0),
SOC_DAPM_SINGLE("AIF2 Switch", WM8995_DAC2_LEFT_MIXER_ROUTING,
2, 1, 0),
SOC_DAPM_SINGLE("AIF1.2 Switch", WM8995_DAC2_LEFT_MIXER_ROUTING,
1, 1, 0),
SOC_DAPM_SINGLE("AIF1.1 Switch", WM8995_DAC2_LEFT_MIXER_ROUTING,
0, 1, 0),
};
static const struct snd_kcontrol_new aif2dac2r_mix[] = {
SOC_DAPM_SINGLE("Right Sidetone Switch", WM8995_DAC2_RIGHT_MIXER_ROUTING,
5, 1, 0),
SOC_DAPM_SINGLE("Left Sidetone Switch", WM8995_DAC2_RIGHT_MIXER_ROUTING,
4, 1, 0),
SOC_DAPM_SINGLE("AIF2 Switch", WM8995_DAC2_RIGHT_MIXER_ROUTING,
2, 1, 0),
SOC_DAPM_SINGLE("AIF1.2 Switch", WM8995_DAC2_RIGHT_MIXER_ROUTING,
1, 1, 0),
SOC_DAPM_SINGLE("AIF1.1 Switch", WM8995_DAC2_RIGHT_MIXER_ROUTING,
0, 1, 0),
};
static const struct snd_kcontrol_new in1l_pga =
SOC_DAPM_SINGLE("IN1L Switch", WM8995_POWER_MANAGEMENT_2, 5, 1, 0);
static const struct snd_kcontrol_new in1r_pga =
SOC_DAPM_SINGLE("IN1R Switch", WM8995_POWER_MANAGEMENT_2, 4, 1, 0);
static const char *adc_mux_text[] = {
"ADC",
"DMIC",
};
static const struct soc_enum adc_enum =
SOC_ENUM_SINGLE(0, 0, 2, adc_mux_text);
static const struct snd_kcontrol_new adcl_mux =
SOC_DAPM_ENUM_VIRT("ADCL Mux", adc_enum);
static const struct snd_kcontrol_new adcr_mux =
SOC_DAPM_ENUM_VIRT("ADCR Mux", adc_enum);
static const char *spk_src_text[] = {
"DAC1L", "DAC1R", "DAC2L", "DAC2R"
};
static const SOC_ENUM_SINGLE_DECL(spk1l_src_enum, WM8995_LEFT_PDM_SPEAKER_1,
0, spk_src_text);
static const SOC_ENUM_SINGLE_DECL(spk1r_src_enum, WM8995_RIGHT_PDM_SPEAKER_1,
0, spk_src_text);
static const SOC_ENUM_SINGLE_DECL(spk2l_src_enum, WM8995_LEFT_PDM_SPEAKER_2,
0, spk_src_text);
static const SOC_ENUM_SINGLE_DECL(spk2r_src_enum, WM8995_RIGHT_PDM_SPEAKER_2,
0, spk_src_text);
static const struct snd_kcontrol_new spk1l_mux =
SOC_DAPM_ENUM("SPK1L SRC", spk1l_src_enum);
static const struct snd_kcontrol_new spk1r_mux =
SOC_DAPM_ENUM("SPK1R SRC", spk1r_src_enum);
static const struct snd_kcontrol_new spk2l_mux =
SOC_DAPM_ENUM("SPK2L SRC", spk2l_src_enum);
static const struct snd_kcontrol_new spk2r_mux =
SOC_DAPM_ENUM("SPK2R SRC", spk2r_src_enum);
static const struct snd_soc_dapm_widget wm8995_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("DMIC1DAT"),
SND_SOC_DAPM_INPUT("DMIC2DAT"),
SND_SOC_DAPM_INPUT("IN1L"),
SND_SOC_DAPM_INPUT("IN1R"),
SND_SOC_DAPM_MIXER("IN1L PGA", SND_SOC_NOPM, 0, 0,
&in1l_pga, 1),
SND_SOC_DAPM_MIXER("IN1R PGA", SND_SOC_NOPM, 0, 0,
&in1r_pga, 1),
SND_SOC_DAPM_SUPPLY("MICBIAS1", WM8995_POWER_MANAGEMENT_1, 8, 0,
NULL, 0),
SND_SOC_DAPM_SUPPLY("MICBIAS2", WM8995_POWER_MANAGEMENT_1, 9, 0,
NULL, 0),
SND_SOC_DAPM_SUPPLY("AIF1CLK", WM8995_AIF1_CLOCKING_1, 0, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("AIF2CLK", WM8995_AIF2_CLOCKING_1, 0, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("DSP1CLK", WM8995_CLOCKING_1, 3, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("DSP2CLK", WM8995_CLOCKING_1, 2, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("SYSDSPCLK", WM8995_CLOCKING_1, 1, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("CLK_SYS", SND_SOC_NOPM, 0, 0, clk_sys_event,
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_AIF_OUT("AIF1ADC1L", "AIF1 Capture", 0,
WM8995_POWER_MANAGEMENT_3, 9, 0),
SND_SOC_DAPM_AIF_OUT("AIF1ADC1R", "AIF1 Capture", 0,
WM8995_POWER_MANAGEMENT_3, 8, 0),
SND_SOC_DAPM_AIF_OUT("AIF1ADCDAT", "AIF1 Capture", 0,
SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_AIF_OUT("AIF1ADC2L", "AIF1 Capture",
0, WM8995_POWER_MANAGEMENT_3, 11, 0),
SND_SOC_DAPM_AIF_OUT("AIF1ADC2R", "AIF1 Capture",
0, WM8995_POWER_MANAGEMENT_3, 10, 0),
SND_SOC_DAPM_VIRT_MUX("ADCL Mux", SND_SOC_NOPM, 1, 0,
&adcl_mux),
SND_SOC_DAPM_VIRT_MUX("ADCR Mux", SND_SOC_NOPM, 0, 0,
&adcr_mux),
SND_SOC_DAPM_ADC("DMIC2L", NULL, WM8995_POWER_MANAGEMENT_3, 5, 0),
SND_SOC_DAPM_ADC("DMIC2R", NULL, WM8995_POWER_MANAGEMENT_3, 4, 0),
SND_SOC_DAPM_ADC("DMIC1L", NULL, WM8995_POWER_MANAGEMENT_3, 3, 0),
SND_SOC_DAPM_ADC("DMIC1R", NULL, WM8995_POWER_MANAGEMENT_3, 2, 0),
SND_SOC_DAPM_ADC("ADCL", NULL, WM8995_POWER_MANAGEMENT_3, 1, 0),
SND_SOC_DAPM_ADC("ADCR", NULL, WM8995_POWER_MANAGEMENT_3, 0, 0),
SND_SOC_DAPM_MIXER("AIF1ADC1L Mixer", SND_SOC_NOPM, 0, 0,
aif1adc1l_mix, ARRAY_SIZE(aif1adc1l_mix)),
SND_SOC_DAPM_MIXER("AIF1ADC1R Mixer", SND_SOC_NOPM, 0, 0,
aif1adc1r_mix, ARRAY_SIZE(aif1adc1r_mix)),
SND_SOC_DAPM_MIXER("AIF1ADC2L Mixer", SND_SOC_NOPM, 0, 0,
aif1adc2l_mix, ARRAY_SIZE(aif1adc2l_mix)),
SND_SOC_DAPM_MIXER("AIF1ADC2R Mixer", SND_SOC_NOPM, 0, 0,
aif1adc2r_mix, ARRAY_SIZE(aif1adc2r_mix)),
SND_SOC_DAPM_AIF_IN("AIF1DAC1L", NULL, 0, WM8995_POWER_MANAGEMENT_4,
9, 0),
SND_SOC_DAPM_AIF_IN("AIF1DAC1R", NULL, 0, WM8995_POWER_MANAGEMENT_4,
8, 0),
SND_SOC_DAPM_AIF_IN("AIF1DACDAT", "AIF1 Playback", 0, SND_SOC_NOPM,
0, 0),
SND_SOC_DAPM_AIF_IN("AIF1DAC2L", NULL, 0, WM8995_POWER_MANAGEMENT_4,
11, 0),
SND_SOC_DAPM_AIF_IN("AIF1DAC2R", NULL, 0, WM8995_POWER_MANAGEMENT_4,
10, 0),
SND_SOC_DAPM_MIXER("AIF2DAC2L Mixer", SND_SOC_NOPM, 0, 0,
aif2dac2l_mix, ARRAY_SIZE(aif2dac2l_mix)),
SND_SOC_DAPM_MIXER("AIF2DAC2R Mixer", SND_SOC_NOPM, 0, 0,
aif2dac2r_mix, ARRAY_SIZE(aif2dac2r_mix)),
SND_SOC_DAPM_DAC("DAC2L", NULL, WM8995_POWER_MANAGEMENT_4, 3, 0),
SND_SOC_DAPM_DAC("DAC2R", NULL, WM8995_POWER_MANAGEMENT_4, 2, 0),
SND_SOC_DAPM_DAC("DAC1L", NULL, WM8995_POWER_MANAGEMENT_4, 1, 0),
SND_SOC_DAPM_DAC("DAC1R", NULL, WM8995_POWER_MANAGEMENT_4, 0, 0),
SND_SOC_DAPM_MIXER("DAC1L Mixer", SND_SOC_NOPM, 0, 0, dac1l_mix,
ARRAY_SIZE(dac1l_mix)),
SND_SOC_DAPM_MIXER("DAC1R Mixer", SND_SOC_NOPM, 0, 0, dac1r_mix,
ARRAY_SIZE(dac1r_mix)),
SND_SOC_DAPM_MUX("Left Sidetone", SND_SOC_NOPM, 0, 0, &sidetone1_mux),
SND_SOC_DAPM_MUX("Right Sidetone", SND_SOC_NOPM, 0, 0, &sidetone2_mux),
SND_SOC_DAPM_PGA_E("Headphone PGA", SND_SOC_NOPM, 0, 0, NULL, 0,
hp_event, SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_SUPPLY("Headphone Supply", SND_SOC_NOPM, 0, 0,
hp_supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_MUX("SPK1L Driver", WM8995_LEFT_PDM_SPEAKER_1,
4, 0, &spk1l_mux),
SND_SOC_DAPM_MUX("SPK1R Driver", WM8995_RIGHT_PDM_SPEAKER_1,
4, 0, &spk1r_mux),
SND_SOC_DAPM_MUX("SPK2L Driver", WM8995_LEFT_PDM_SPEAKER_2,
4, 0, &spk2l_mux),
SND_SOC_DAPM_MUX("SPK2R Driver", WM8995_RIGHT_PDM_SPEAKER_2,
4, 0, &spk2r_mux),
SND_SOC_DAPM_SUPPLY("LDO2", WM8995_POWER_MANAGEMENT_2, 1, 0, NULL, 0),
SND_SOC_DAPM_OUTPUT("HP1L"),
SND_SOC_DAPM_OUTPUT("HP1R"),
SND_SOC_DAPM_OUTPUT("SPK1L"),
SND_SOC_DAPM_OUTPUT("SPK1R"),
SND_SOC_DAPM_OUTPUT("SPK2L"),
SND_SOC_DAPM_OUTPUT("SPK2R")
};
static const struct snd_soc_dapm_route wm8995_intercon[] = {
{ "CLK_SYS", NULL, "AIF1CLK", check_clk_sys },
{ "CLK_SYS", NULL, "AIF2CLK", check_clk_sys },
{ "DSP1CLK", NULL, "CLK_SYS" },
{ "DSP2CLK", NULL, "CLK_SYS" },
{ "SYSDSPCLK", NULL, "CLK_SYS" },
{ "AIF1ADC1L", NULL, "AIF1CLK" },
{ "AIF1ADC1L", NULL, "DSP1CLK" },
{ "AIF1ADC1R", NULL, "AIF1CLK" },
{ "AIF1ADC1R", NULL, "DSP1CLK" },
{ "AIF1ADC1R", NULL, "SYSDSPCLK" },
{ "AIF1ADC2L", NULL, "AIF1CLK" },
{ "AIF1ADC2L", NULL, "DSP1CLK" },
{ "AIF1ADC2R", NULL, "AIF1CLK" },
{ "AIF1ADC2R", NULL, "DSP1CLK" },
{ "AIF1ADC2R", NULL, "SYSDSPCLK" },
{ "DMIC1L", NULL, "DMIC1DAT" },
{ "DMIC1L", NULL, "CLK_SYS" },
{ "DMIC1R", NULL, "DMIC1DAT" },
{ "DMIC1R", NULL, "CLK_SYS" },
{ "DMIC2L", NULL, "DMIC2DAT" },
{ "DMIC2L", NULL, "CLK_SYS" },
{ "DMIC2R", NULL, "DMIC2DAT" },
{ "DMIC2R", NULL, "CLK_SYS" },
{ "ADCL", NULL, "AIF1CLK" },
{ "ADCL", NULL, "DSP1CLK" },
{ "ADCL", NULL, "SYSDSPCLK" },
{ "ADCR", NULL, "AIF1CLK" },
{ "ADCR", NULL, "DSP1CLK" },
{ "ADCR", NULL, "SYSDSPCLK" },
{ "IN1L PGA", "IN1L Switch", "IN1L" },
{ "IN1R PGA", "IN1R Switch", "IN1R" },
{ "IN1L PGA", NULL, "LDO2" },
{ "IN1R PGA", NULL, "LDO2" },
{ "ADCL", NULL, "IN1L PGA" },
{ "ADCR", NULL, "IN1R PGA" },
{ "ADCL Mux", "ADC", "ADCL" },
{ "ADCL Mux", "DMIC", "DMIC1L" },
{ "ADCR Mux", "ADC", "ADCR" },
{ "ADCR Mux", "DMIC", "DMIC1R" },
/* AIF1 outputs */
{ "AIF1ADC1L", NULL, "AIF1ADC1L Mixer" },
{ "AIF1ADC1L Mixer", "ADC/DMIC Switch", "ADCL Mux" },
{ "AIF1ADC1R", NULL, "AIF1ADC1R Mixer" },
{ "AIF1ADC1R Mixer", "ADC/DMIC Switch", "ADCR Mux" },
{ "AIF1ADC2L", NULL, "AIF1ADC2L Mixer" },
{ "AIF1ADC2L Mixer", "DMIC Switch", "DMIC2L" },
{ "AIF1ADC2R", NULL, "AIF1ADC2R Mixer" },
{ "AIF1ADC2R Mixer", "DMIC Switch", "DMIC2R" },
/* Sidetone */
{ "Left Sidetone", "ADC/DMIC1", "AIF1ADC1L" },
{ "Left Sidetone", "DMIC2", "AIF1ADC2L" },
{ "Right Sidetone", "ADC/DMIC1", "AIF1ADC1R" },
{ "Right Sidetone", "DMIC2", "AIF1ADC2R" },
{ "AIF1DAC1L", NULL, "AIF1CLK" },
{ "AIF1DAC1L", NULL, "DSP1CLK" },
{ "AIF1DAC1R", NULL, "AIF1CLK" },
{ "AIF1DAC1R", NULL, "DSP1CLK" },
{ "AIF1DAC1R", NULL, "SYSDSPCLK" },
{ "AIF1DAC2L", NULL, "AIF1CLK" },
{ "AIF1DAC2L", NULL, "DSP1CLK" },
{ "AIF1DAC2R", NULL, "AIF1CLK" },
{ "AIF1DAC2R", NULL, "DSP1CLK" },
{ "AIF1DAC2R", NULL, "SYSDSPCLK" },
{ "DAC1L", NULL, "AIF1CLK" },
{ "DAC1L", NULL, "DSP1CLK" },
{ "DAC1L", NULL, "SYSDSPCLK" },
{ "DAC1R", NULL, "AIF1CLK" },
{ "DAC1R", NULL, "DSP1CLK" },
{ "DAC1R", NULL, "SYSDSPCLK" },
{ "AIF1DAC1L", NULL, "AIF1DACDAT" },
{ "AIF1DAC1R", NULL, "AIF1DACDAT" },
{ "AIF1DAC2L", NULL, "AIF1DACDAT" },
{ "AIF1DAC2R", NULL, "AIF1DACDAT" },
/* DAC1 inputs */
{ "DAC1L", NULL, "DAC1L Mixer" },
{ "DAC1L Mixer", "AIF1.1 Switch", "AIF1DAC1L" },
{ "DAC1L Mixer", "AIF1.2 Switch", "AIF1DAC2L" },
{ "DAC1L Mixer", "Left Sidetone Switch", "Left Sidetone" },
{ "DAC1L Mixer", "Right Sidetone Switch", "Right Sidetone" },
{ "DAC1R", NULL, "DAC1R Mixer" },
{ "DAC1R Mixer", "AIF1.1 Switch", "AIF1DAC1R" },
{ "DAC1R Mixer", "AIF1.2 Switch", "AIF1DAC2R" },
{ "DAC1R Mixer", "Left Sidetone Switch", "Left Sidetone" },
{ "DAC1R Mixer", "Right Sidetone Switch", "Right Sidetone" },
/* DAC2/AIF2 outputs */
{ "DAC2L", NULL, "AIF2DAC2L Mixer" },
{ "AIF2DAC2L Mixer", "AIF1.2 Switch", "AIF1DAC2L" },
{ "AIF2DAC2L Mixer", "AIF1.1 Switch", "AIF1DAC1L" },
{ "DAC2R", NULL, "AIF2DAC2R Mixer" },
{ "AIF2DAC2R Mixer", "AIF1.2 Switch", "AIF1DAC2R" },
{ "AIF2DAC2R Mixer", "AIF1.1 Switch", "AIF1DAC1R" },
/* Output stages */
{ "Headphone PGA", NULL, "DAC1L" },
{ "Headphone PGA", NULL, "DAC1R" },
{ "Headphone PGA", NULL, "DAC2L" },
{ "Headphone PGA", NULL, "DAC2R" },
{ "Headphone PGA", NULL, "Headphone Supply" },
{ "Headphone PGA", NULL, "CLK_SYS" },
{ "Headphone PGA", NULL, "LDO2" },
{ "HP1L", NULL, "Headphone PGA" },
{ "HP1R", NULL, "Headphone PGA" },
{ "SPK1L Driver", "DAC1L", "DAC1L" },
{ "SPK1L Driver", "DAC1R", "DAC1R" },
{ "SPK1L Driver", "DAC2L", "DAC2L" },
{ "SPK1L Driver", "DAC2R", "DAC2R" },
{ "SPK1L Driver", NULL, "CLK_SYS" },
{ "SPK1R Driver", "DAC1L", "DAC1L" },
{ "SPK1R Driver", "DAC1R", "DAC1R" },
{ "SPK1R Driver", "DAC2L", "DAC2L" },
{ "SPK1R Driver", "DAC2R", "DAC2R" },
{ "SPK1R Driver", NULL, "CLK_SYS" },
{ "SPK2L Driver", "DAC1L", "DAC1L" },
{ "SPK2L Driver", "DAC1R", "DAC1R" },
{ "SPK2L Driver", "DAC2L", "DAC2L" },
{ "SPK2L Driver", "DAC2R", "DAC2R" },
{ "SPK2L Driver", NULL, "CLK_SYS" },
{ "SPK2R Driver", "DAC1L", "DAC1L" },
{ "SPK2R Driver", "DAC1R", "DAC1R" },
{ "SPK2R Driver", "DAC2L", "DAC2L" },
{ "SPK2R Driver", "DAC2R", "DAC2R" },
{ "SPK2R Driver", NULL, "CLK_SYS" },
{ "SPK1L", NULL, "SPK1L Driver" },
{ "SPK1R", NULL, "SPK1R Driver" },
{ "SPK2L", NULL, "SPK2L Driver" },
{ "SPK2R", NULL, "SPK2R Driver" }
};
static bool wm8995_readable(struct device *dev, unsigned int reg)
{
switch (reg) {
case WM8995_SOFTWARE_RESET:
case WM8995_POWER_MANAGEMENT_1:
case WM8995_POWER_MANAGEMENT_2:
case WM8995_POWER_MANAGEMENT_3:
case WM8995_POWER_MANAGEMENT_4:
case WM8995_POWER_MANAGEMENT_5:
case WM8995_LEFT_LINE_INPUT_1_VOLUME:
case WM8995_RIGHT_LINE_INPUT_1_VOLUME:
case WM8995_LEFT_LINE_INPUT_CONTROL:
case WM8995_DAC1_LEFT_VOLUME:
case WM8995_DAC1_RIGHT_VOLUME:
case WM8995_DAC2_LEFT_VOLUME:
case WM8995_DAC2_RIGHT_VOLUME:
case WM8995_OUTPUT_VOLUME_ZC_1:
case WM8995_MICBIAS_1:
case WM8995_MICBIAS_2:
case WM8995_LDO_1:
case WM8995_LDO_2:
case WM8995_ACCESSORY_DETECT_MODE1:
case WM8995_ACCESSORY_DETECT_MODE2:
case WM8995_HEADPHONE_DETECT1:
case WM8995_HEADPHONE_DETECT2:
case WM8995_MIC_DETECT_1:
case WM8995_MIC_DETECT_2:
case WM8995_CHARGE_PUMP_1:
case WM8995_CLASS_W_1:
case WM8995_DC_SERVO_1:
case WM8995_DC_SERVO_2:
case WM8995_DC_SERVO_3:
case WM8995_DC_SERVO_5:
case WM8995_DC_SERVO_6:
case WM8995_DC_SERVO_7:
case WM8995_DC_SERVO_READBACK_0:
case WM8995_ANALOGUE_HP_1:
case WM8995_ANALOGUE_HP_2:
case WM8995_CHIP_REVISION:
case WM8995_CONTROL_INTERFACE_1:
case WM8995_CONTROL_INTERFACE_2:
case WM8995_WRITE_SEQUENCER_CTRL_1:
case WM8995_WRITE_SEQUENCER_CTRL_2:
case WM8995_AIF1_CLOCKING_1:
case WM8995_AIF1_CLOCKING_2:
case WM8995_AIF2_CLOCKING_1:
case WM8995_AIF2_CLOCKING_2:
case WM8995_CLOCKING_1:
case WM8995_CLOCKING_2:
case WM8995_AIF1_RATE:
case WM8995_AIF2_RATE:
case WM8995_RATE_STATUS:
case WM8995_FLL1_CONTROL_1:
case WM8995_FLL1_CONTROL_2:
case WM8995_FLL1_CONTROL_3:
case WM8995_FLL1_CONTROL_4:
case WM8995_FLL1_CONTROL_5:
case WM8995_FLL2_CONTROL_1:
case WM8995_FLL2_CONTROL_2:
case WM8995_FLL2_CONTROL_3:
case WM8995_FLL2_CONTROL_4:
case WM8995_FLL2_CONTROL_5:
case WM8995_AIF1_CONTROL_1:
case WM8995_AIF1_CONTROL_2:
case WM8995_AIF1_MASTER_SLAVE:
case WM8995_AIF1_BCLK:
case WM8995_AIF1ADC_LRCLK:
case WM8995_AIF1DAC_LRCLK:
case WM8995_AIF1DAC_DATA:
case WM8995_AIF1ADC_DATA:
case WM8995_AIF2_CONTROL_1:
case WM8995_AIF2_CONTROL_2:
case WM8995_AIF2_MASTER_SLAVE:
case WM8995_AIF2_BCLK:
case WM8995_AIF2ADC_LRCLK:
case WM8995_AIF2DAC_LRCLK:
case WM8995_AIF2DAC_DATA:
case WM8995_AIF2ADC_DATA:
case WM8995_AIF1_ADC1_LEFT_VOLUME:
case WM8995_AIF1_ADC1_RIGHT_VOLUME:
case WM8995_AIF1_DAC1_LEFT_VOLUME:
case WM8995_AIF1_DAC1_RIGHT_VOLUME:
case WM8995_AIF1_ADC2_LEFT_VOLUME:
case WM8995_AIF1_ADC2_RIGHT_VOLUME:
case WM8995_AIF1_DAC2_LEFT_VOLUME:
case WM8995_AIF1_DAC2_RIGHT_VOLUME:
case WM8995_AIF1_ADC1_FILTERS:
case WM8995_AIF1_ADC2_FILTERS:
case WM8995_AIF1_DAC1_FILTERS_1:
case WM8995_AIF1_DAC1_FILTERS_2:
case WM8995_AIF1_DAC2_FILTERS_1:
case WM8995_AIF1_DAC2_FILTERS_2:
case WM8995_AIF1_DRC1_1:
case WM8995_AIF1_DRC1_2:
case WM8995_AIF1_DRC1_3:
case WM8995_AIF1_DRC1_4:
case WM8995_AIF1_DRC1_5:
case WM8995_AIF1_DRC2_1:
case WM8995_AIF1_DRC2_2:
case WM8995_AIF1_DRC2_3:
case WM8995_AIF1_DRC2_4:
case WM8995_AIF1_DRC2_5:
case WM8995_AIF1_DAC1_EQ_GAINS_1:
case WM8995_AIF1_DAC1_EQ_GAINS_2:
case WM8995_AIF1_DAC1_EQ_BAND_1_A:
case WM8995_AIF1_DAC1_EQ_BAND_1_B:
case WM8995_AIF1_DAC1_EQ_BAND_1_PG:
case WM8995_AIF1_DAC1_EQ_BAND_2_A:
case WM8995_AIF1_DAC1_EQ_BAND_2_B:
case WM8995_AIF1_DAC1_EQ_BAND_2_C:
case WM8995_AIF1_DAC1_EQ_BAND_2_PG:
case WM8995_AIF1_DAC1_EQ_BAND_3_A:
case WM8995_AIF1_DAC1_EQ_BAND_3_B:
case WM8995_AIF1_DAC1_EQ_BAND_3_C:
case WM8995_AIF1_DAC1_EQ_BAND_3_PG:
case WM8995_AIF1_DAC1_EQ_BAND_4_A:
case WM8995_AIF1_DAC1_EQ_BAND_4_B:
case WM8995_AIF1_DAC1_EQ_BAND_4_C:
case WM8995_AIF1_DAC1_EQ_BAND_4_PG:
case WM8995_AIF1_DAC1_EQ_BAND_5_A:
case WM8995_AIF1_DAC1_EQ_BAND_5_B:
case WM8995_AIF1_DAC1_EQ_BAND_5_PG:
case WM8995_AIF1_DAC2_EQ_GAINS_1:
case WM8995_AIF1_DAC2_EQ_GAINS_2:
case WM8995_AIF1_DAC2_EQ_BAND_1_A:
case WM8995_AIF1_DAC2_EQ_BAND_1_B:
case WM8995_AIF1_DAC2_EQ_BAND_1_PG:
case WM8995_AIF1_DAC2_EQ_BAND_2_A:
case WM8995_AIF1_DAC2_EQ_BAND_2_B:
case WM8995_AIF1_DAC2_EQ_BAND_2_C:
case WM8995_AIF1_DAC2_EQ_BAND_2_PG:
case WM8995_AIF1_DAC2_EQ_BAND_3_A:
case WM8995_AIF1_DAC2_EQ_BAND_3_B:
case WM8995_AIF1_DAC2_EQ_BAND_3_C:
case WM8995_AIF1_DAC2_EQ_BAND_3_PG:
case WM8995_AIF1_DAC2_EQ_BAND_4_A:
case WM8995_AIF1_DAC2_EQ_BAND_4_B:
case WM8995_AIF1_DAC2_EQ_BAND_4_C:
case WM8995_AIF1_DAC2_EQ_BAND_4_PG:
case WM8995_AIF1_DAC2_EQ_BAND_5_A:
case WM8995_AIF1_DAC2_EQ_BAND_5_B:
case WM8995_AIF1_DAC2_EQ_BAND_5_PG:
case WM8995_AIF2_ADC_LEFT_VOLUME:
case WM8995_AIF2_ADC_RIGHT_VOLUME:
case WM8995_AIF2_DAC_LEFT_VOLUME:
case WM8995_AIF2_DAC_RIGHT_VOLUME:
case WM8995_AIF2_ADC_FILTERS:
case WM8995_AIF2_DAC_FILTERS_1:
case WM8995_AIF2_DAC_FILTERS_2:
case WM8995_AIF2_DRC_1:
case WM8995_AIF2_DRC_2:
case WM8995_AIF2_DRC_3:
case WM8995_AIF2_DRC_4:
case WM8995_AIF2_DRC_5:
case WM8995_AIF2_EQ_GAINS_1:
case WM8995_AIF2_EQ_GAINS_2:
case WM8995_AIF2_EQ_BAND_1_A:
case WM8995_AIF2_EQ_BAND_1_B:
case WM8995_AIF2_EQ_BAND_1_PG:
case WM8995_AIF2_EQ_BAND_2_A:
case WM8995_AIF2_EQ_BAND_2_B:
case WM8995_AIF2_EQ_BAND_2_C:
case WM8995_AIF2_EQ_BAND_2_PG:
case WM8995_AIF2_EQ_BAND_3_A:
case WM8995_AIF2_EQ_BAND_3_B:
case WM8995_AIF2_EQ_BAND_3_C:
case WM8995_AIF2_EQ_BAND_3_PG:
case WM8995_AIF2_EQ_BAND_4_A:
case WM8995_AIF2_EQ_BAND_4_B:
case WM8995_AIF2_EQ_BAND_4_C:
case WM8995_AIF2_EQ_BAND_4_PG:
case WM8995_AIF2_EQ_BAND_5_A:
case WM8995_AIF2_EQ_BAND_5_B:
case WM8995_AIF2_EQ_BAND_5_PG:
case WM8995_DAC1_MIXER_VOLUMES:
case WM8995_DAC1_LEFT_MIXER_ROUTING:
case WM8995_DAC1_RIGHT_MIXER_ROUTING:
case WM8995_DAC2_MIXER_VOLUMES:
case WM8995_DAC2_LEFT_MIXER_ROUTING:
case WM8995_DAC2_RIGHT_MIXER_ROUTING:
case WM8995_AIF1_ADC1_LEFT_MIXER_ROUTING:
case WM8995_AIF1_ADC1_RIGHT_MIXER_ROUTING:
case WM8995_AIF1_ADC2_LEFT_MIXER_ROUTING:
case WM8995_AIF1_ADC2_RIGHT_MIXER_ROUTING:
case WM8995_DAC_SOFTMUTE:
case WM8995_OVERSAMPLING:
case WM8995_SIDETONE:
case WM8995_GPIO_1:
case WM8995_GPIO_2:
case WM8995_GPIO_3:
case WM8995_GPIO_4:
case WM8995_GPIO_5:
case WM8995_GPIO_6:
case WM8995_GPIO_7:
case WM8995_GPIO_8:
case WM8995_GPIO_9:
case WM8995_GPIO_10:
case WM8995_GPIO_11:
case WM8995_GPIO_12:
case WM8995_GPIO_13:
case WM8995_GPIO_14:
case WM8995_PULL_CONTROL_1:
case WM8995_PULL_CONTROL_2:
case WM8995_INTERRUPT_STATUS_1:
case WM8995_INTERRUPT_STATUS_2:
case WM8995_INTERRUPT_RAW_STATUS_2:
case WM8995_INTERRUPT_STATUS_1_MASK:
case WM8995_INTERRUPT_STATUS_2_MASK:
case WM8995_INTERRUPT_CONTROL:
case WM8995_LEFT_PDM_SPEAKER_1:
case WM8995_RIGHT_PDM_SPEAKER_1:
case WM8995_PDM_SPEAKER_1_MUTE_SEQUENCE:
case WM8995_LEFT_PDM_SPEAKER_2:
case WM8995_RIGHT_PDM_SPEAKER_2:
case WM8995_PDM_SPEAKER_2_MUTE_SEQUENCE:
return true;
default:
return false;
}
}
static bool wm8995_volatile(struct device *dev, unsigned int reg)
{
switch (reg) {
case WM8995_SOFTWARE_RESET:
case WM8995_DC_SERVO_READBACK_0:
case WM8995_INTERRUPT_STATUS_1:
case WM8995_INTERRUPT_STATUS_2:
case WM8995_INTERRUPT_CONTROL:
case WM8995_ACCESSORY_DETECT_MODE1:
case WM8995_ACCESSORY_DETECT_MODE2:
case WM8995_HEADPHONE_DETECT1:
case WM8995_HEADPHONE_DETECT2:
case WM8995_RATE_STATUS:
return true;
default:
return false;
}
}
static int wm8995_aif_mute(struct snd_soc_dai *dai, int mute)
{
struct snd_soc_codec *codec = dai->codec;
int mute_reg;
switch (dai->id) {
case 0:
mute_reg = WM8995_AIF1_DAC1_FILTERS_1;
break;
case 1:
mute_reg = WM8995_AIF2_DAC_FILTERS_1;
break;
default:
return -EINVAL;
}
snd_soc_update_bits(codec, mute_reg, WM8995_AIF1DAC1_MUTE_MASK,
!!mute << WM8995_AIF1DAC1_MUTE_SHIFT);
return 0;
}
static int wm8995_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_codec *codec;
int master;
int aif;
codec = dai->codec;
master = 0;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
break;
case SND_SOC_DAIFMT_CBM_CFM:
master = WM8995_AIF1_MSTR;
break;
default:
dev_err(dai->dev, "Unknown master/slave configuration\n");
return -EINVAL;
}
aif = 0;
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_B:
aif |= WM8995_AIF1_LRCLK_INV;
case SND_SOC_DAIFMT_DSP_A:
aif |= (0x3 << WM8995_AIF1_FMT_SHIFT);
break;
case SND_SOC_DAIFMT_I2S:
aif |= (0x2 << WM8995_AIF1_FMT_SHIFT);
break;
case SND_SOC_DAIFMT_RIGHT_J:
break;
case SND_SOC_DAIFMT_LEFT_J:
aif |= (0x1 << WM8995_AIF1_FMT_SHIFT);
break;
default:
dev_err(dai->dev, "Unknown dai format\n");
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_DSP_A:
case SND_SOC_DAIFMT_DSP_B:
/* frame inversion not valid for DSP modes */
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_NF:
aif |= WM8995_AIF1_BCLK_INV;
break;
default:
return -EINVAL;
}
break;
case SND_SOC_DAIFMT_I2S:
case SND_SOC_DAIFMT_RIGHT_J:
case SND_SOC_DAIFMT_LEFT_J:
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_IF:
aif |= WM8995_AIF1_BCLK_INV | WM8995_AIF1_LRCLK_INV;
break;
case SND_SOC_DAIFMT_IB_NF:
aif |= WM8995_AIF1_BCLK_INV;
break;
case SND_SOC_DAIFMT_NB_IF:
aif |= WM8995_AIF1_LRCLK_INV;
break;
default:
return -EINVAL;
}
break;
default:
return -EINVAL;
}
snd_soc_update_bits(codec, WM8995_AIF1_CONTROL_1,
WM8995_AIF1_BCLK_INV_MASK |
WM8995_AIF1_LRCLK_INV_MASK |
WM8995_AIF1_FMT_MASK, aif);
snd_soc_update_bits(codec, WM8995_AIF1_MASTER_SLAVE,
WM8995_AIF1_MSTR_MASK, master);
return 0;
}
static const int srs[] = {
8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100,
48000, 88200, 96000
};
static const int fs_ratios[] = {
-1 /* reserved */,
128, 192, 256, 384, 512, 768, 1024, 1408, 1536
};
static const int bclk_divs[] = {
10, 15, 20, 30, 40, 55, 60, 80, 110, 120, 160, 220, 240, 320, 440, 480
};
static int wm8995_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec;
struct wm8995_priv *wm8995;
int aif1_reg;
int bclk_reg;
int lrclk_reg;
int rate_reg;
int bclk_rate;
int aif1;
int lrclk, bclk;
int i, rate_val, best, best_val, cur_val;
codec = dai->codec;
wm8995 = snd_soc_codec_get_drvdata(codec);
switch (dai->id) {
case 0:
aif1_reg = WM8995_AIF1_CONTROL_1;
bclk_reg = WM8995_AIF1_BCLK;
rate_reg = WM8995_AIF1_RATE;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK /* ||
wm8995->lrclk_shared[0] */) {
lrclk_reg = WM8995_AIF1DAC_LRCLK;
} else {
lrclk_reg = WM8995_AIF1ADC_LRCLK;
dev_dbg(codec->dev, "AIF1 using split LRCLK\n");
}
break;
case 1:
aif1_reg = WM8995_AIF2_CONTROL_1;
bclk_reg = WM8995_AIF2_BCLK;
rate_reg = WM8995_AIF2_RATE;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK /* ||
wm8995->lrclk_shared[1] */) {
lrclk_reg = WM8995_AIF2DAC_LRCLK;
} else {
lrclk_reg = WM8995_AIF2ADC_LRCLK;
dev_dbg(codec->dev, "AIF2 using split LRCLK\n");
}
break;
default:
return -EINVAL;
}
bclk_rate = snd_soc_params_to_bclk(params);
if (bclk_rate < 0)
return bclk_rate;
aif1 = 0;
switch (params_format(params)) {
case SNDRV_PCM_FORMAT_S16_LE:
break;
case SNDRV_PCM_FORMAT_S20_3LE:
aif1 |= (0x1 << WM8995_AIF1_WL_SHIFT);
break;
case SNDRV_PCM_FORMAT_S24_LE:
aif1 |= (0x2 << WM8995_AIF1_WL_SHIFT);
break;
case SNDRV_PCM_FORMAT_S32_LE:
aif1 |= (0x3 << WM8995_AIF1_WL_SHIFT);
break;
default:
dev_err(dai->dev, "Unsupported word length %u\n",
params_format(params));
return -EINVAL;
}
/* try to find a suitable sample rate */
for (i = 0; i < ARRAY_SIZE(srs); ++i)
if (srs[i] == params_rate(params))
break;
if (i == ARRAY_SIZE(srs)) {
dev_err(dai->dev, "Sample rate %d is not supported\n",
params_rate(params));
return -EINVAL;
}
rate_val = i << WM8995_AIF1_SR_SHIFT;
dev_dbg(dai->dev, "Sample rate is %dHz\n", srs[i]);
dev_dbg(dai->dev, "AIF%dCLK is %dHz, target BCLK %dHz\n",
dai->id + 1, wm8995->aifclk[dai->id], bclk_rate);
/* AIFCLK/fs ratio; look for a close match in either direction */
best = 1;
best_val = abs((fs_ratios[1] * params_rate(params))
- wm8995->aifclk[dai->id]);
for (i = 2; i < ARRAY_SIZE(fs_ratios); i++) {
cur_val = abs((fs_ratios[i] * params_rate(params))
- wm8995->aifclk[dai->id]);
if (cur_val >= best_val)
continue;
best = i;
best_val = cur_val;
}
rate_val |= best;
dev_dbg(dai->dev, "Selected AIF%dCLK/fs = %d\n",
dai->id + 1, fs_ratios[best]);
/*
* We may not get quite the right frequency if using
* approximate clocks so look for the closest match that is
* higher than the target (we need to ensure that there enough
* BCLKs to clock out the samples).
*/
best = 0;
bclk = 0;
for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
cur_val = (wm8995->aifclk[dai->id] * 10 / bclk_divs[i]) - bclk_rate;
if (cur_val < 0) /* BCLK table is sorted */
break;
best = i;
}
bclk |= best << WM8995_AIF1_BCLK_DIV_SHIFT;
bclk_rate = wm8995->aifclk[dai->id] * 10 / bclk_divs[best];
dev_dbg(dai->dev, "Using BCLK_DIV %d for actual BCLK %dHz\n",
bclk_divs[best], bclk_rate);
lrclk = bclk_rate / params_rate(params);
dev_dbg(dai->dev, "Using LRCLK rate %d for actual LRCLK %dHz\n",
lrclk, bclk_rate / lrclk);
snd_soc_update_bits(codec, aif1_reg,
WM8995_AIF1_WL_MASK, aif1);
snd_soc_update_bits(codec, bclk_reg,
WM8995_AIF1_BCLK_DIV_MASK, bclk);
snd_soc_update_bits(codec, lrclk_reg,
WM8995_AIF1DAC_RATE_MASK, lrclk);
snd_soc_update_bits(codec, rate_reg,
WM8995_AIF1_SR_MASK |
WM8995_AIF1CLK_RATE_MASK, rate_val);
return 0;
}
static int wm8995_set_tristate(struct snd_soc_dai *codec_dai, int tristate)
{
struct snd_soc_codec *codec = codec_dai->codec;
int reg, val, mask;
switch (codec_dai->id) {
case 0:
reg = WM8995_AIF1_MASTER_SLAVE;
mask = WM8995_AIF1_TRI;
break;
case 1:
reg = WM8995_AIF2_MASTER_SLAVE;
mask = WM8995_AIF2_TRI;
break;
case 2:
reg = WM8995_POWER_MANAGEMENT_5;
mask = WM8995_AIF3_TRI;
break;
default:
return -EINVAL;
}
if (tristate)
val = mask;
else
val = 0;
return snd_soc_update_bits(codec, reg, mask, val);
}
/* The size in bits of the FLL divide multiplied by 10
* to allow rounding later */
#define FIXED_FLL_SIZE ((1 << 16) * 10)
struct fll_div {
u16 outdiv;
u16 n;
u16 k;
u16 clk_ref_div;
u16 fll_fratio;
};
static int wm8995_get_fll_config(struct fll_div *fll,
int freq_in, int freq_out)
{
u64 Kpart;
unsigned int K, Ndiv, Nmod;
pr_debug("FLL input=%dHz, output=%dHz\n", freq_in, freq_out);
/* Scale the input frequency down to <= 13.5MHz */
fll->clk_ref_div = 0;
while (freq_in > 13500000) {
fll->clk_ref_div++;
freq_in /= 2;
if (fll->clk_ref_div > 3)
return -EINVAL;
}
pr_debug("CLK_REF_DIV=%d, Fref=%dHz\n", fll->clk_ref_div, freq_in);
/* Scale the output to give 90MHz<=Fvco<=100MHz */
fll->outdiv = 3;
while (freq_out * (fll->outdiv + 1) < 90000000) {
fll->outdiv++;
if (fll->outdiv > 63)
return -EINVAL;
}
freq_out *= fll->outdiv + 1;
pr_debug("OUTDIV=%d, Fvco=%dHz\n", fll->outdiv, freq_out);
if (freq_in > 1000000) {
fll->fll_fratio = 0;
} else if (freq_in > 256000) {
fll->fll_fratio = 1;
freq_in *= 2;
} else if (freq_in > 128000) {
fll->fll_fratio = 2;
freq_in *= 4;
} else if (freq_in > 64000) {
fll->fll_fratio = 3;
freq_in *= 8;
} else {
fll->fll_fratio = 4;
freq_in *= 16;
}
pr_debug("FLL_FRATIO=%d, Fref=%dHz\n", fll->fll_fratio, freq_in);
/* Now, calculate N.K */
Ndiv = freq_out / freq_in;
fll->n = Ndiv;
Nmod = freq_out % freq_in;
pr_debug("Nmod=%d\n", Nmod);
/* Calculate fractional part - scale up so we can round. */
Kpart = FIXED_FLL_SIZE * (long long)Nmod;
do_div(Kpart, freq_in);
K = Kpart & 0xFFFFFFFF;
if ((K % 10) >= 5)
K += 5;
/* Move down to proper range now rounding is done */
fll->k = K / 10;
pr_debug("N=%x K=%x\n", fll->n, fll->k);
return 0;
}
static int wm8995_set_fll(struct snd_soc_dai *dai, int id,
int src, unsigned int freq_in,
unsigned int freq_out)
{
struct snd_soc_codec *codec;
struct wm8995_priv *wm8995;
int reg_offset, ret;
struct fll_div fll;
u16 reg, aif1, aif2;
codec = dai->codec;
wm8995 = snd_soc_codec_get_drvdata(codec);
aif1 = snd_soc_read(codec, WM8995_AIF1_CLOCKING_1)
& WM8995_AIF1CLK_ENA;
aif2 = snd_soc_read(codec, WM8995_AIF2_CLOCKING_1)
& WM8995_AIF2CLK_ENA;
switch (id) {
case WM8995_FLL1:
reg_offset = 0;
id = 0;
break;
case WM8995_FLL2:
reg_offset = 0x20;
id = 1;
break;
default:
return -EINVAL;
}
switch (src) {
case 0:
/* Allow no source specification when stopping */
if (freq_out)
return -EINVAL;
break;
case WM8995_FLL_SRC_MCLK1:
case WM8995_FLL_SRC_MCLK2:
case WM8995_FLL_SRC_LRCLK:
case WM8995_FLL_SRC_BCLK:
break;
default:
return -EINVAL;
}
/* Are we changing anything? */
if (wm8995->fll[id].src == src &&
wm8995->fll[id].in == freq_in && wm8995->fll[id].out == freq_out)
return 0;
/* If we're stopping the FLL redo the old config - no
* registers will actually be written but we avoid GCC flow
* analysis bugs spewing warnings.
*/
if (freq_out)
ret = wm8995_get_fll_config(&fll, freq_in, freq_out);
else
ret = wm8995_get_fll_config(&fll, wm8995->fll[id].in,
wm8995->fll[id].out);
if (ret < 0)
return ret;
/* Gate the AIF clocks while we reclock */
snd_soc_update_bits(codec, WM8995_AIF1_CLOCKING_1,
WM8995_AIF1CLK_ENA_MASK, 0);
snd_soc_update_bits(codec, WM8995_AIF2_CLOCKING_1,
WM8995_AIF2CLK_ENA_MASK, 0);
/* We always need to disable the FLL while reconfiguring */
snd_soc_update_bits(codec, WM8995_FLL1_CONTROL_1 + reg_offset,
WM8995_FLL1_ENA_MASK, 0);
reg = (fll.outdiv << WM8995_FLL1_OUTDIV_SHIFT) |
(fll.fll_fratio << WM8995_FLL1_FRATIO_SHIFT);
snd_soc_update_bits(codec, WM8995_FLL1_CONTROL_2 + reg_offset,
WM8995_FLL1_OUTDIV_MASK |
WM8995_FLL1_FRATIO_MASK, reg);
snd_soc_write(codec, WM8995_FLL1_CONTROL_3 + reg_offset, fll.k);
snd_soc_update_bits(codec, WM8995_FLL1_CONTROL_4 + reg_offset,
WM8995_FLL1_N_MASK,
fll.n << WM8995_FLL1_N_SHIFT);
snd_soc_update_bits(codec, WM8995_FLL1_CONTROL_5 + reg_offset,
WM8995_FLL1_REFCLK_DIV_MASK |
WM8995_FLL1_REFCLK_SRC_MASK,
(fll.clk_ref_div << WM8995_FLL1_REFCLK_DIV_SHIFT) |
(src - 1));
if (freq_out)
snd_soc_update_bits(codec, WM8995_FLL1_CONTROL_1 + reg_offset,
WM8995_FLL1_ENA_MASK, WM8995_FLL1_ENA);
wm8995->fll[id].in = freq_in;
wm8995->fll[id].out = freq_out;
wm8995->fll[id].src = src;
/* Enable any gated AIF clocks */
snd_soc_update_bits(codec, WM8995_AIF1_CLOCKING_1,
WM8995_AIF1CLK_ENA_MASK, aif1);
snd_soc_update_bits(codec, WM8995_AIF2_CLOCKING_1,
WM8995_AIF2CLK_ENA_MASK, aif2);
configure_clock(codec);
return 0;
}
static int wm8995_set_dai_sysclk(struct snd_soc_dai *dai,
int clk_id, unsigned int freq, int dir)
{
struct snd_soc_codec *codec;
struct wm8995_priv *wm8995;
codec = dai->codec;
wm8995 = snd_soc_codec_get_drvdata(codec);
switch (dai->id) {
case 0:
case 1:
break;
default:
/* AIF3 shares clocking with AIF1/2 */
return -EINVAL;
}
switch (clk_id) {
case WM8995_SYSCLK_MCLK1:
wm8995->sysclk[dai->id] = WM8995_SYSCLK_MCLK1;
wm8995->mclk[0] = freq;
dev_dbg(dai->dev, "AIF%d using MCLK1 at %uHz\n",
dai->id + 1, freq);
break;
case WM8995_SYSCLK_MCLK2:
wm8995->sysclk[dai->id] = WM8995_SYSCLK_MCLK1;
wm8995->mclk[1] = freq;
dev_dbg(dai->dev, "AIF%d using MCLK2 at %uHz\n",
dai->id + 1, freq);
break;
case WM8995_SYSCLK_FLL1:
wm8995->sysclk[dai->id] = WM8995_SYSCLK_FLL1;
dev_dbg(dai->dev, "AIF%d using FLL1\n", dai->id + 1);
break;
case WM8995_SYSCLK_FLL2:
wm8995->sysclk[dai->id] = WM8995_SYSCLK_FLL2;
dev_dbg(dai->dev, "AIF%d using FLL2\n", dai->id + 1);
break;
case WM8995_SYSCLK_OPCLK:
default:
dev_err(dai->dev, "Unknown clock source %d\n", clk_id);
return -EINVAL;
}
configure_clock(codec);
return 0;
}
static int wm8995_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct wm8995_priv *wm8995;
int ret;
wm8995 = snd_soc_codec_get_drvdata(codec);
switch (level) {
case SND_SOC_BIAS_ON:
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(wm8995->supplies),
wm8995->supplies);
if (ret)
return ret;
ret = regcache_sync(wm8995->regmap);
if (ret) {
dev_err(codec->dev,
"Failed to sync cache: %d\n", ret);
return ret;
}
snd_soc_update_bits(codec, WM8995_POWER_MANAGEMENT_1,
WM8995_BG_ENA_MASK, WM8995_BG_ENA);
}
break;
case SND_SOC_BIAS_OFF:
snd_soc_update_bits(codec, WM8995_POWER_MANAGEMENT_1,
WM8995_BG_ENA_MASK, 0);
regulator_bulk_disable(ARRAY_SIZE(wm8995->supplies),
wm8995->supplies);
break;
}
codec->dapm.bias_level = level;
return 0;
}
#ifdef CONFIG_PM
static int wm8995_suspend(struct snd_soc_codec *codec)
{
wm8995_set_bias_level(codec, SND_SOC_BIAS_OFF);
return 0;
}
static int wm8995_resume(struct snd_soc_codec *codec)
{
wm8995_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
return 0;
}
#else
#define wm8995_suspend NULL
#define wm8995_resume NULL
#endif
static int wm8995_remove(struct snd_soc_codec *codec)
{
struct wm8995_priv *wm8995;
int i;
wm8995 = snd_soc_codec_get_drvdata(codec);
wm8995_set_bias_level(codec, SND_SOC_BIAS_OFF);
for (i = 0; i < ARRAY_SIZE(wm8995->supplies); ++i)
regulator_unregister_notifier(wm8995->supplies[i].consumer,
&wm8995->disable_nb[i]);
regulator_bulk_free(ARRAY_SIZE(wm8995->supplies), wm8995->supplies);
return 0;
}
static int wm8995_probe(struct snd_soc_codec *codec)
{
struct wm8995_priv *wm8995;
int i;
int ret;
wm8995 = snd_soc_codec_get_drvdata(codec);
wm8995->codec = codec;
codec->control_data = wm8995->regmap;
ret = snd_soc_codec_set_cache_io(codec, 16, 16, SND_SOC_REGMAP);
if (ret < 0) {
dev_err(codec->dev, "Failed to set cache i/o: %d\n", ret);
return ret;
}
for (i = 0; i < ARRAY_SIZE(wm8995->supplies); i++)
wm8995->supplies[i].supply = wm8995_supply_names[i];
ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8995->supplies),
wm8995->supplies);
if (ret) {
dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
return ret;
}
wm8995->disable_nb[0].notifier_call = wm8995_regulator_event_0;
wm8995->disable_nb[1].notifier_call = wm8995_regulator_event_1;
wm8995->disable_nb[2].notifier_call = wm8995_regulator_event_2;
wm8995->disable_nb[3].notifier_call = wm8995_regulator_event_3;
wm8995->disable_nb[4].notifier_call = wm8995_regulator_event_4;
wm8995->disable_nb[5].notifier_call = wm8995_regulator_event_5;
wm8995->disable_nb[6].notifier_call = wm8995_regulator_event_6;
wm8995->disable_nb[7].notifier_call = wm8995_regulator_event_7;
/* This should really be moved into the regulator core */
for (i = 0; i < ARRAY_SIZE(wm8995->supplies); i++) {
ret = regulator_register_notifier(wm8995->supplies[i].consumer,
&wm8995->disable_nb[i]);
if (ret) {
dev_err(codec->dev,
"Failed to register regulator notifier: %d\n",
ret);
}
}
ret = regulator_bulk_enable(ARRAY_SIZE(wm8995->supplies),
wm8995->supplies);
if (ret) {
dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
goto err_reg_get;
}
ret = snd_soc_read(codec, WM8995_SOFTWARE_RESET);
if (ret < 0) {
dev_err(codec->dev, "Failed to read device ID: %d\n", ret);
goto err_reg_enable;
}
if (ret != 0x8995) {
dev_err(codec->dev, "Invalid device ID: %#x\n", ret);
ret = -EINVAL;
goto err_reg_enable;
}
ret = snd_soc_write(codec, WM8995_SOFTWARE_RESET, 0);
if (ret < 0) {
dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
goto err_reg_enable;
}
wm8995_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
/* Latch volume updates (right only; we always do left then right). */
snd_soc_update_bits(codec, WM8995_AIF1_DAC1_RIGHT_VOLUME,
WM8995_AIF1DAC1_VU_MASK, WM8995_AIF1DAC1_VU);
snd_soc_update_bits(codec, WM8995_AIF1_DAC2_RIGHT_VOLUME,
WM8995_AIF1DAC2_VU_MASK, WM8995_AIF1DAC2_VU);
snd_soc_update_bits(codec, WM8995_AIF2_DAC_RIGHT_VOLUME,
WM8995_AIF2DAC_VU_MASK, WM8995_AIF2DAC_VU);
snd_soc_update_bits(codec, WM8995_AIF1_ADC1_RIGHT_VOLUME,
WM8995_AIF1ADC1_VU_MASK, WM8995_AIF1ADC1_VU);
snd_soc_update_bits(codec, WM8995_AIF1_ADC2_RIGHT_VOLUME,
WM8995_AIF1ADC2_VU_MASK, WM8995_AIF1ADC2_VU);
snd_soc_update_bits(codec, WM8995_AIF2_ADC_RIGHT_VOLUME,
WM8995_AIF2ADC_VU_MASK, WM8995_AIF1ADC2_VU);
snd_soc_update_bits(codec, WM8995_DAC1_RIGHT_VOLUME,
WM8995_DAC1_VU_MASK, WM8995_DAC1_VU);
snd_soc_update_bits(codec, WM8995_DAC2_RIGHT_VOLUME,
WM8995_DAC2_VU_MASK, WM8995_DAC2_VU);
snd_soc_update_bits(codec, WM8995_RIGHT_LINE_INPUT_1_VOLUME,
WM8995_IN1_VU_MASK, WM8995_IN1_VU);
wm8995_update_class_w(codec);
snd_soc_add_codec_controls(codec, wm8995_snd_controls,
ARRAY_SIZE(wm8995_snd_controls));
snd_soc_dapm_new_controls(&codec->dapm, wm8995_dapm_widgets,
ARRAY_SIZE(wm8995_dapm_widgets));
snd_soc_dapm_add_routes(&codec->dapm, wm8995_intercon,
ARRAY_SIZE(wm8995_intercon));
return 0;
err_reg_enable:
regulator_bulk_disable(ARRAY_SIZE(wm8995->supplies), wm8995->supplies);
err_reg_get:
regulator_bulk_free(ARRAY_SIZE(wm8995->supplies), wm8995->supplies);
return ret;
}
#define WM8995_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
static const struct snd_soc_dai_ops wm8995_aif1_dai_ops = {
.set_sysclk = wm8995_set_dai_sysclk,
.set_fmt = wm8995_set_dai_fmt,
.hw_params = wm8995_hw_params,
.digital_mute = wm8995_aif_mute,
.set_pll = wm8995_set_fll,
.set_tristate = wm8995_set_tristate,
};
static const struct snd_soc_dai_ops wm8995_aif2_dai_ops = {
.set_sysclk = wm8995_set_dai_sysclk,
.set_fmt = wm8995_set_dai_fmt,
.hw_params = wm8995_hw_params,
.digital_mute = wm8995_aif_mute,
.set_pll = wm8995_set_fll,
.set_tristate = wm8995_set_tristate,
};
static const struct snd_soc_dai_ops wm8995_aif3_dai_ops = {
.set_tristate = wm8995_set_tristate,
};
static struct snd_soc_dai_driver wm8995_dai[] = {
{
.name = "wm8995-aif1",
.playback = {
.stream_name = "AIF1 Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_96000,
.formats = WM8995_FORMATS
},
.capture = {
.stream_name = "AIF1 Capture",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = WM8995_FORMATS
},
.ops = &wm8995_aif1_dai_ops
},
{
.name = "wm8995-aif2",
.playback = {
.stream_name = "AIF2 Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_96000,
.formats = WM8995_FORMATS
},
.capture = {
.stream_name = "AIF2 Capture",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = WM8995_FORMATS
},
.ops = &wm8995_aif2_dai_ops
},
{
.name = "wm8995-aif3",
.playback = {
.stream_name = "AIF3 Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_96000,
.formats = WM8995_FORMATS
},
.capture = {
.stream_name = "AIF3 Capture",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = WM8995_FORMATS
},
.ops = &wm8995_aif3_dai_ops
}
};
static struct snd_soc_codec_driver soc_codec_dev_wm8995 = {
.probe = wm8995_probe,
.remove = wm8995_remove,
.suspend = wm8995_suspend,
.resume = wm8995_resume,
.set_bias_level = wm8995_set_bias_level,
.idle_bias_off = true,
};
static struct regmap_config wm8995_regmap = {
.reg_bits = 16,
.val_bits = 16,
.max_register = WM8995_MAX_REGISTER,
.reg_defaults = wm8995_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(wm8995_reg_defaults),
.volatile_reg = wm8995_volatile,
.readable_reg = wm8995_readable,
.cache_type = REGCACHE_RBTREE,
};
#if defined(CONFIG_SPI_MASTER)
static int __devinit wm8995_spi_probe(struct spi_device *spi)
{
struct wm8995_priv *wm8995;
int ret;
wm8995 = kzalloc(sizeof *wm8995, GFP_KERNEL);
if (!wm8995)
return -ENOMEM;
spi_set_drvdata(spi, wm8995);
wm8995->regmap = regmap_init_spi(spi, &wm8995_regmap);
if (IS_ERR(wm8995->regmap)) {
ret = PTR_ERR(wm8995->regmap);
dev_err(&spi->dev, "Failed to register regmap: %d\n", ret);
goto err_alloc;
}
ret = snd_soc_register_codec(&spi->dev,
&soc_codec_dev_wm8995, wm8995_dai,
ARRAY_SIZE(wm8995_dai));
if (ret < 0)
goto err_regmap;
return ret;
err_regmap:
regmap_exit(wm8995->regmap);
err_alloc:
kfree(wm8995);
return ret;
}
static int __devexit wm8995_spi_remove(struct spi_device *spi)
{
struct wm8995_priv *wm8995 = spi_get_drvdata(spi);
snd_soc_unregister_codec(&spi->dev);
regmap_exit(wm8995->regmap);
kfree(wm8995);
return 0;
}
static struct spi_driver wm8995_spi_driver = {
.driver = {
.name = "wm8995",
.owner = THIS_MODULE,
},
.probe = wm8995_spi_probe,
.remove = __devexit_p(wm8995_spi_remove)
};
#endif
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
static __devinit int wm8995_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct wm8995_priv *wm8995;
int ret;
wm8995 = kzalloc(sizeof *wm8995, GFP_KERNEL);
if (!wm8995)
return -ENOMEM;
i2c_set_clientdata(i2c, wm8995);
wm8995->regmap = regmap_init_i2c(i2c, &wm8995_regmap);
if (IS_ERR(wm8995->regmap)) {
ret = PTR_ERR(wm8995->regmap);
dev_err(&i2c->dev, "Failed to register regmap: %d\n", ret);
goto err_alloc;
}
ret = snd_soc_register_codec(&i2c->dev,
&soc_codec_dev_wm8995, wm8995_dai,
ARRAY_SIZE(wm8995_dai));
if (ret < 0) {
dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
goto err_regmap;
}
return ret;
err_regmap:
regmap_exit(wm8995->regmap);
err_alloc:
kfree(wm8995);
return ret;
}
static __devexit int wm8995_i2c_remove(struct i2c_client *client)
{
struct wm8995_priv *wm8995 = i2c_get_clientdata(client);
snd_soc_unregister_codec(&client->dev);
regmap_exit(wm8995->regmap);
kfree(wm8995);
return 0;
}
static const struct i2c_device_id wm8995_i2c_id[] = {
{"wm8995", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, wm8995_i2c_id);
static struct i2c_driver wm8995_i2c_driver = {
.driver = {
.name = "wm8995",
.owner = THIS_MODULE,
},
.probe = wm8995_i2c_probe,
.remove = __devexit_p(wm8995_i2c_remove),
.id_table = wm8995_i2c_id
};
#endif
static int __init wm8995_modinit(void)
{
int ret = 0;
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
ret = i2c_add_driver(&wm8995_i2c_driver);
if (ret) {
printk(KERN_ERR "Failed to register wm8995 I2C driver: %d\n",
ret);
}
#endif
#if defined(CONFIG_SPI_MASTER)
ret = spi_register_driver(&wm8995_spi_driver);
if (ret) {
printk(KERN_ERR "Failed to register wm8995 SPI driver: %d\n",
ret);
}
#endif
return ret;
}
module_init(wm8995_modinit);
static void __exit wm8995_exit(void)
{
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
i2c_del_driver(&wm8995_i2c_driver);
#endif
#if defined(CONFIG_SPI_MASTER)
spi_unregister_driver(&wm8995_spi_driver);
#endif
}
module_exit(wm8995_exit);
MODULE_DESCRIPTION("ASoC WM8995 driver");
MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>");
MODULE_LICENSE("GPL");
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