1512 lines
37 KiB
C
1512 lines
37 KiB
C
/*
|
|
* wm9081.c -- WM9081 ALSA SoC Audio driver
|
|
*
|
|
* Author: Mark Brown
|
|
*
|
|
* Copyright 2009 Wolfson Microelectronics plc
|
|
*
|
|
* 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/platform_device.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 <sound/wm9081.h>
|
|
#include "wm9081.h"
|
|
|
|
static u16 wm9081_reg_defaults[] = {
|
|
0x0000, /* R0 - Software Reset */
|
|
0x0000, /* R1 */
|
|
0x00B9, /* R2 - Analogue Lineout */
|
|
0x00B9, /* R3 - Analogue Speaker PGA */
|
|
0x0001, /* R4 - VMID Control */
|
|
0x0068, /* R5 - Bias Control 1 */
|
|
0x0000, /* R6 */
|
|
0x0000, /* R7 - Analogue Mixer */
|
|
0x0000, /* R8 - Anti Pop Control */
|
|
0x01DB, /* R9 - Analogue Speaker 1 */
|
|
0x0018, /* R10 - Analogue Speaker 2 */
|
|
0x0180, /* R11 - Power Management */
|
|
0x0000, /* R12 - Clock Control 1 */
|
|
0x0038, /* R13 - Clock Control 2 */
|
|
0x4000, /* R14 - Clock Control 3 */
|
|
0x0000, /* R15 */
|
|
0x0000, /* R16 - FLL Control 1 */
|
|
0x0200, /* R17 - FLL Control 2 */
|
|
0x0000, /* R18 - FLL Control 3 */
|
|
0x0204, /* R19 - FLL Control 4 */
|
|
0x0000, /* R20 - FLL Control 5 */
|
|
0x0000, /* R21 */
|
|
0x0000, /* R22 - Audio Interface 1 */
|
|
0x0002, /* R23 - Audio Interface 2 */
|
|
0x0008, /* R24 - Audio Interface 3 */
|
|
0x0022, /* R25 - Audio Interface 4 */
|
|
0x0000, /* R26 - Interrupt Status */
|
|
0x0006, /* R27 - Interrupt Status Mask */
|
|
0x0000, /* R28 - Interrupt Polarity */
|
|
0x0000, /* R29 - Interrupt Control */
|
|
0x00C0, /* R30 - DAC Digital 1 */
|
|
0x0008, /* R31 - DAC Digital 2 */
|
|
0x09AF, /* R32 - DRC 1 */
|
|
0x4201, /* R33 - DRC 2 */
|
|
0x0000, /* R34 - DRC 3 */
|
|
0x0000, /* R35 - DRC 4 */
|
|
0x0000, /* R36 */
|
|
0x0000, /* R37 */
|
|
0x0000, /* R38 - Write Sequencer 1 */
|
|
0x0000, /* R39 - Write Sequencer 2 */
|
|
0x0002, /* R40 - MW Slave 1 */
|
|
0x0000, /* R41 */
|
|
0x0000, /* R42 - EQ 1 */
|
|
0x0000, /* R43 - EQ 2 */
|
|
0x0FCA, /* R44 - EQ 3 */
|
|
0x0400, /* R45 - EQ 4 */
|
|
0x00B8, /* R46 - EQ 5 */
|
|
0x1EB5, /* R47 - EQ 6 */
|
|
0xF145, /* R48 - EQ 7 */
|
|
0x0B75, /* R49 - EQ 8 */
|
|
0x01C5, /* R50 - EQ 9 */
|
|
0x169E, /* R51 - EQ 10 */
|
|
0xF829, /* R52 - EQ 11 */
|
|
0x07AD, /* R53 - EQ 12 */
|
|
0x1103, /* R54 - EQ 13 */
|
|
0x1C58, /* R55 - EQ 14 */
|
|
0xF373, /* R56 - EQ 15 */
|
|
0x0A54, /* R57 - EQ 16 */
|
|
0x0558, /* R58 - EQ 17 */
|
|
0x0564, /* R59 - EQ 18 */
|
|
0x0559, /* R60 - EQ 19 */
|
|
0x4000, /* R61 - EQ 20 */
|
|
};
|
|
|
|
static struct {
|
|
int ratio;
|
|
int clk_sys_rate;
|
|
} clk_sys_rates[] = {
|
|
{ 64, 0 },
|
|
{ 128, 1 },
|
|
{ 192, 2 },
|
|
{ 256, 3 },
|
|
{ 384, 4 },
|
|
{ 512, 5 },
|
|
{ 768, 6 },
|
|
{ 1024, 7 },
|
|
{ 1408, 8 },
|
|
{ 1536, 9 },
|
|
};
|
|
|
|
static struct {
|
|
int rate;
|
|
int sample_rate;
|
|
} sample_rates[] = {
|
|
{ 8000, 0 },
|
|
{ 11025, 1 },
|
|
{ 12000, 2 },
|
|
{ 16000, 3 },
|
|
{ 22050, 4 },
|
|
{ 24000, 5 },
|
|
{ 32000, 6 },
|
|
{ 44100, 7 },
|
|
{ 48000, 8 },
|
|
{ 88200, 9 },
|
|
{ 96000, 10 },
|
|
};
|
|
|
|
static struct {
|
|
int div; /* *10 due to .5s */
|
|
int bclk_div;
|
|
} bclk_divs[] = {
|
|
{ 10, 0 },
|
|
{ 15, 1 },
|
|
{ 20, 2 },
|
|
{ 30, 3 },
|
|
{ 40, 4 },
|
|
{ 50, 5 },
|
|
{ 55, 6 },
|
|
{ 60, 7 },
|
|
{ 80, 8 },
|
|
{ 100, 9 },
|
|
{ 110, 10 },
|
|
{ 120, 11 },
|
|
{ 160, 12 },
|
|
{ 200, 13 },
|
|
{ 220, 14 },
|
|
{ 240, 15 },
|
|
{ 250, 16 },
|
|
{ 300, 17 },
|
|
{ 320, 18 },
|
|
{ 440, 19 },
|
|
{ 480, 20 },
|
|
};
|
|
|
|
struct wm9081_priv {
|
|
struct snd_soc_codec codec;
|
|
u16 reg_cache[WM9081_MAX_REGISTER + 1];
|
|
int sysclk_source;
|
|
int mclk_rate;
|
|
int sysclk_rate;
|
|
int fs;
|
|
int bclk;
|
|
int master;
|
|
int fll_fref;
|
|
int fll_fout;
|
|
int tdm_width;
|
|
struct wm9081_retune_mobile_config *retune;
|
|
};
|
|
|
|
static int wm9081_volatile_register(unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case WM9081_SOFTWARE_RESET:
|
|
return 1;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
static int wm9081_reset(struct snd_soc_codec *codec)
|
|
{
|
|
return snd_soc_write(codec, WM9081_SOFTWARE_RESET, 0);
|
|
}
|
|
|
|
static const DECLARE_TLV_DB_SCALE(drc_in_tlv, -4500, 75, 0);
|
|
static const DECLARE_TLV_DB_SCALE(drc_out_tlv, -2250, 75, 0);
|
|
static const DECLARE_TLV_DB_SCALE(drc_min_tlv, -1800, 600, 0);
|
|
static unsigned int drc_max_tlv[] = {
|
|
TLV_DB_RANGE_HEAD(4),
|
|
0, 0, TLV_DB_SCALE_ITEM(1200, 0, 0),
|
|
1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0),
|
|
2, 2, TLV_DB_SCALE_ITEM(2400, 0, 0),
|
|
3, 3, TLV_DB_SCALE_ITEM(3600, 0, 0),
|
|
};
|
|
static const DECLARE_TLV_DB_SCALE(drc_qr_tlv, 1200, 600, 0);
|
|
static const DECLARE_TLV_DB_SCALE(drc_startup_tlv, -300, 50, 0);
|
|
|
|
static const DECLARE_TLV_DB_SCALE(eq_tlv, -1200, 100, 0);
|
|
|
|
static const DECLARE_TLV_DB_SCALE(in_tlv, -600, 600, 0);
|
|
static const DECLARE_TLV_DB_SCALE(dac_tlv, -7200, 75, 1);
|
|
static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
|
|
|
|
static const char *drc_high_text[] = {
|
|
"1",
|
|
"1/2",
|
|
"1/4",
|
|
"1/8",
|
|
"1/16",
|
|
"0",
|
|
};
|
|
|
|
static const struct soc_enum drc_high =
|
|
SOC_ENUM_SINGLE(WM9081_DRC_3, 3, 6, drc_high_text);
|
|
|
|
static const char *drc_low_text[] = {
|
|
"1",
|
|
"1/2",
|
|
"1/4",
|
|
"1/8",
|
|
"0",
|
|
};
|
|
|
|
static const struct soc_enum drc_low =
|
|
SOC_ENUM_SINGLE(WM9081_DRC_3, 0, 5, drc_low_text);
|
|
|
|
static const char *drc_atk_text[] = {
|
|
"181us",
|
|
"181us",
|
|
"363us",
|
|
"726us",
|
|
"1.45ms",
|
|
"2.9ms",
|
|
"5.8ms",
|
|
"11.6ms",
|
|
"23.2ms",
|
|
"46.4ms",
|
|
"92.8ms",
|
|
"185.6ms",
|
|
};
|
|
|
|
static const struct soc_enum drc_atk =
|
|
SOC_ENUM_SINGLE(WM9081_DRC_2, 12, 12, drc_atk_text);
|
|
|
|
static const char *drc_dcy_text[] = {
|
|
"186ms",
|
|
"372ms",
|
|
"743ms",
|
|
"1.49s",
|
|
"2.97s",
|
|
"5.94s",
|
|
"11.89s",
|
|
"23.78s",
|
|
"47.56s",
|
|
};
|
|
|
|
static const struct soc_enum drc_dcy =
|
|
SOC_ENUM_SINGLE(WM9081_DRC_2, 8, 9, drc_dcy_text);
|
|
|
|
static const char *drc_qr_dcy_text[] = {
|
|
"0.725ms",
|
|
"1.45ms",
|
|
"5.8ms",
|
|
};
|
|
|
|
static const struct soc_enum drc_qr_dcy =
|
|
SOC_ENUM_SINGLE(WM9081_DRC_2, 4, 3, drc_qr_dcy_text);
|
|
|
|
static const char *dac_deemph_text[] = {
|
|
"None",
|
|
"32kHz",
|
|
"44.1kHz",
|
|
"48kHz",
|
|
};
|
|
|
|
static const struct soc_enum dac_deemph =
|
|
SOC_ENUM_SINGLE(WM9081_DAC_DIGITAL_2, 1, 4, dac_deemph_text);
|
|
|
|
static const char *speaker_mode_text[] = {
|
|
"Class D",
|
|
"Class AB",
|
|
};
|
|
|
|
static const struct soc_enum speaker_mode =
|
|
SOC_ENUM_SINGLE(WM9081_ANALOGUE_SPEAKER_2, 6, 2, speaker_mode_text);
|
|
|
|
static int speaker_mode_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, WM9081_ANALOGUE_SPEAKER_2);
|
|
if (reg & WM9081_SPK_MODE)
|
|
ucontrol->value.integer.value[0] = 1;
|
|
else
|
|
ucontrol->value.integer.value[0] = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Stop any attempts to change speaker mode while the speaker is enabled.
|
|
*
|
|
* We also have some special anti-pop controls dependant on speaker
|
|
* mode which must be changed along with the mode.
|
|
*/
|
|
static int speaker_mode_put(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
unsigned int reg_pwr = snd_soc_read(codec, WM9081_POWER_MANAGEMENT);
|
|
unsigned int reg2 = snd_soc_read(codec, WM9081_ANALOGUE_SPEAKER_2);
|
|
|
|
/* Are we changing anything? */
|
|
if (ucontrol->value.integer.value[0] ==
|
|
((reg2 & WM9081_SPK_MODE) != 0))
|
|
return 0;
|
|
|
|
/* Don't try to change modes while enabled */
|
|
if (reg_pwr & WM9081_SPK_ENA)
|
|
return -EINVAL;
|
|
|
|
if (ucontrol->value.integer.value[0]) {
|
|
/* Class AB */
|
|
reg2 &= ~(WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL);
|
|
reg2 |= WM9081_SPK_MODE;
|
|
} else {
|
|
/* Class D */
|
|
reg2 |= WM9081_SPK_INV_MUTE | WM9081_OUT_SPK_CTRL;
|
|
reg2 &= ~WM9081_SPK_MODE;
|
|
}
|
|
|
|
snd_soc_write(codec, WM9081_ANALOGUE_SPEAKER_2, reg2);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct snd_kcontrol_new wm9081_snd_controls[] = {
|
|
SOC_SINGLE_TLV("IN1 Volume", WM9081_ANALOGUE_MIXER, 1, 1, 1, in_tlv),
|
|
SOC_SINGLE_TLV("IN2 Volume", WM9081_ANALOGUE_MIXER, 3, 1, 1, in_tlv),
|
|
|
|
SOC_SINGLE_TLV("Playback Volume", WM9081_DAC_DIGITAL_1, 1, 96, 0, dac_tlv),
|
|
|
|
SOC_SINGLE("LINEOUT Switch", WM9081_ANALOGUE_LINEOUT, 7, 1, 1),
|
|
SOC_SINGLE("LINEOUT ZC Switch", WM9081_ANALOGUE_LINEOUT, 6, 1, 0),
|
|
SOC_SINGLE_TLV("LINEOUT Volume", WM9081_ANALOGUE_LINEOUT, 0, 63, 0, out_tlv),
|
|
|
|
SOC_SINGLE("DRC Switch", WM9081_DRC_1, 15, 1, 0),
|
|
SOC_ENUM("DRC High Slope", drc_high),
|
|
SOC_ENUM("DRC Low Slope", drc_low),
|
|
SOC_SINGLE_TLV("DRC Input Volume", WM9081_DRC_4, 5, 60, 1, drc_in_tlv),
|
|
SOC_SINGLE_TLV("DRC Output Volume", WM9081_DRC_4, 0, 30, 1, drc_out_tlv),
|
|
SOC_SINGLE_TLV("DRC Minimum Volume", WM9081_DRC_2, 2, 3, 1, drc_min_tlv),
|
|
SOC_SINGLE_TLV("DRC Maximum Volume", WM9081_DRC_2, 0, 3, 0, drc_max_tlv),
|
|
SOC_ENUM("DRC Attack", drc_atk),
|
|
SOC_ENUM("DRC Decay", drc_dcy),
|
|
SOC_SINGLE("DRC Quick Release Switch", WM9081_DRC_1, 2, 1, 0),
|
|
SOC_SINGLE_TLV("DRC Quick Release Volume", WM9081_DRC_2, 6, 3, 0, drc_qr_tlv),
|
|
SOC_ENUM("DRC Quick Release Decay", drc_qr_dcy),
|
|
SOC_SINGLE_TLV("DRC Startup Volume", WM9081_DRC_1, 6, 18, 0, drc_startup_tlv),
|
|
|
|
SOC_SINGLE("EQ Switch", WM9081_EQ_1, 0, 1, 0),
|
|
|
|
SOC_SINGLE("Speaker DC Volume", WM9081_ANALOGUE_SPEAKER_1, 3, 5, 0),
|
|
SOC_SINGLE("Speaker AC Volume", WM9081_ANALOGUE_SPEAKER_1, 0, 5, 0),
|
|
SOC_SINGLE("Speaker Switch", WM9081_ANALOGUE_SPEAKER_PGA, 7, 1, 1),
|
|
SOC_SINGLE("Speaker ZC Switch", WM9081_ANALOGUE_SPEAKER_PGA, 6, 1, 0),
|
|
SOC_SINGLE_TLV("Speaker Volume", WM9081_ANALOGUE_SPEAKER_PGA, 0, 63, 0,
|
|
out_tlv),
|
|
SOC_ENUM("DAC Deemphasis", dac_deemph),
|
|
SOC_ENUM_EXT("Speaker Mode", speaker_mode, speaker_mode_get, speaker_mode_put),
|
|
};
|
|
|
|
static const struct snd_kcontrol_new wm9081_eq_controls[] = {
|
|
SOC_SINGLE_TLV("EQ1 Volume", WM9081_EQ_1, 11, 24, 0, eq_tlv),
|
|
SOC_SINGLE_TLV("EQ2 Volume", WM9081_EQ_1, 6, 24, 0, eq_tlv),
|
|
SOC_SINGLE_TLV("EQ3 Volume", WM9081_EQ_1, 1, 24, 0, eq_tlv),
|
|
SOC_SINGLE_TLV("EQ4 Volume", WM9081_EQ_2, 11, 24, 0, eq_tlv),
|
|
SOC_SINGLE_TLV("EQ5 Volume", WM9081_EQ_2, 6, 24, 0, eq_tlv),
|
|
};
|
|
|
|
static const struct snd_kcontrol_new mixer[] = {
|
|
SOC_DAPM_SINGLE("IN1 Switch", WM9081_ANALOGUE_MIXER, 0, 1, 0),
|
|
SOC_DAPM_SINGLE("IN2 Switch", WM9081_ANALOGUE_MIXER, 2, 1, 0),
|
|
SOC_DAPM_SINGLE("Playback Switch", WM9081_ANALOGUE_MIXER, 4, 1, 0),
|
|
};
|
|
|
|
static int speaker_event(struct snd_soc_dapm_widget *w,
|
|
struct snd_kcontrol *kcontrol, int event)
|
|
{
|
|
struct snd_soc_codec *codec = w->codec;
|
|
unsigned int reg = snd_soc_read(codec, WM9081_POWER_MANAGEMENT);
|
|
|
|
switch (event) {
|
|
case SND_SOC_DAPM_POST_PMU:
|
|
reg |= WM9081_SPK_ENA;
|
|
break;
|
|
|
|
case SND_SOC_DAPM_PRE_PMD:
|
|
reg &= ~WM9081_SPK_ENA;
|
|
break;
|
|
}
|
|
|
|
snd_soc_write(codec, WM9081_POWER_MANAGEMENT, reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct _fll_div {
|
|
u16 fll_fratio;
|
|
u16 fll_outdiv;
|
|
u16 fll_clk_ref_div;
|
|
u16 n;
|
|
u16 k;
|
|
};
|
|
|
|
/* The size in bits of the FLL divide multiplied by 10
|
|
* to allow rounding later */
|
|
#define FIXED_FLL_SIZE ((1 << 16) * 10)
|
|
|
|
static struct {
|
|
unsigned int min;
|
|
unsigned int max;
|
|
u16 fll_fratio;
|
|
int ratio;
|
|
} fll_fratios[] = {
|
|
{ 0, 64000, 4, 16 },
|
|
{ 64000, 128000, 3, 8 },
|
|
{ 128000, 256000, 2, 4 },
|
|
{ 256000, 1000000, 1, 2 },
|
|
{ 1000000, 13500000, 0, 1 },
|
|
};
|
|
|
|
static int fll_factors(struct _fll_div *fll_div, unsigned int Fref,
|
|
unsigned int Fout)
|
|
{
|
|
u64 Kpart;
|
|
unsigned int K, Ndiv, Nmod, target;
|
|
unsigned int div;
|
|
int i;
|
|
|
|
/* Fref must be <=13.5MHz */
|
|
div = 1;
|
|
while ((Fref / div) > 13500000) {
|
|
div *= 2;
|
|
|
|
if (div > 8) {
|
|
pr_err("Can't scale %dMHz input down to <=13.5MHz\n",
|
|
Fref);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
fll_div->fll_clk_ref_div = div / 2;
|
|
|
|
pr_debug("Fref=%u Fout=%u\n", Fref, Fout);
|
|
|
|
/* Apply the division for our remaining calculations */
|
|
Fref /= div;
|
|
|
|
/* Fvco should be 90-100MHz; don't check the upper bound */
|
|
div = 0;
|
|
target = Fout * 2;
|
|
while (target < 90000000) {
|
|
div++;
|
|
target *= 2;
|
|
if (div > 7) {
|
|
pr_err("Unable to find FLL_OUTDIV for Fout=%uHz\n",
|
|
Fout);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
fll_div->fll_outdiv = div;
|
|
|
|
pr_debug("Fvco=%dHz\n", target);
|
|
|
|
/* Find an appropraite FLL_FRATIO and factor it out of the target */
|
|
for (i = 0; i < ARRAY_SIZE(fll_fratios); i++) {
|
|
if (fll_fratios[i].min <= Fref && Fref <= fll_fratios[i].max) {
|
|
fll_div->fll_fratio = fll_fratios[i].fll_fratio;
|
|
target /= fll_fratios[i].ratio;
|
|
break;
|
|
}
|
|
}
|
|
if (i == ARRAY_SIZE(fll_fratios)) {
|
|
pr_err("Unable to find FLL_FRATIO for Fref=%uHz\n", Fref);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Now, calculate N.K */
|
|
Ndiv = target / Fref;
|
|
|
|
fll_div->n = Ndiv;
|
|
Nmod = target % Fref;
|
|
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, Fref);
|
|
|
|
K = Kpart & 0xFFFFFFFF;
|
|
|
|
if ((K % 10) >= 5)
|
|
K += 5;
|
|
|
|
/* Move down to proper range now rounding is done */
|
|
fll_div->k = K / 10;
|
|
|
|
pr_debug("N=%x K=%x FLL_FRATIO=%x FLL_OUTDIV=%x FLL_CLK_REF_DIV=%x\n",
|
|
fll_div->n, fll_div->k,
|
|
fll_div->fll_fratio, fll_div->fll_outdiv,
|
|
fll_div->fll_clk_ref_div);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm9081_set_fll(struct snd_soc_codec *codec, int fll_id,
|
|
unsigned int Fref, unsigned int Fout)
|
|
{
|
|
struct wm9081_priv *wm9081 = codec->private_data;
|
|
u16 reg1, reg4, reg5;
|
|
struct _fll_div fll_div;
|
|
int ret;
|
|
int clk_sys_reg;
|
|
|
|
/* Any change? */
|
|
if (Fref == wm9081->fll_fref && Fout == wm9081->fll_fout)
|
|
return 0;
|
|
|
|
/* Disable the FLL */
|
|
if (Fout == 0) {
|
|
dev_dbg(codec->dev, "FLL disabled\n");
|
|
wm9081->fll_fref = 0;
|
|
wm9081->fll_fout = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
ret = fll_factors(&fll_div, Fref, Fout);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
reg5 = snd_soc_read(codec, WM9081_FLL_CONTROL_5);
|
|
reg5 &= ~WM9081_FLL_CLK_SRC_MASK;
|
|
|
|
switch (fll_id) {
|
|
case WM9081_SYSCLK_FLL_MCLK:
|
|
reg5 |= 0x1;
|
|
break;
|
|
|
|
default:
|
|
dev_err(codec->dev, "Unknown FLL ID %d\n", fll_id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Disable CLK_SYS while we reconfigure */
|
|
clk_sys_reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_3);
|
|
if (clk_sys_reg & WM9081_CLK_SYS_ENA)
|
|
snd_soc_write(codec, WM9081_CLOCK_CONTROL_3,
|
|
clk_sys_reg & ~WM9081_CLK_SYS_ENA);
|
|
|
|
/* Any FLL configuration change requires that the FLL be
|
|
* disabled first. */
|
|
reg1 = snd_soc_read(codec, WM9081_FLL_CONTROL_1);
|
|
reg1 &= ~WM9081_FLL_ENA;
|
|
snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1);
|
|
|
|
/* Apply the configuration */
|
|
if (fll_div.k)
|
|
reg1 |= WM9081_FLL_FRAC_MASK;
|
|
else
|
|
reg1 &= ~WM9081_FLL_FRAC_MASK;
|
|
snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1);
|
|
|
|
snd_soc_write(codec, WM9081_FLL_CONTROL_2,
|
|
(fll_div.fll_outdiv << WM9081_FLL_OUTDIV_SHIFT) |
|
|
(fll_div.fll_fratio << WM9081_FLL_FRATIO_SHIFT));
|
|
snd_soc_write(codec, WM9081_FLL_CONTROL_3, fll_div.k);
|
|
|
|
reg4 = snd_soc_read(codec, WM9081_FLL_CONTROL_4);
|
|
reg4 &= ~WM9081_FLL_N_MASK;
|
|
reg4 |= fll_div.n << WM9081_FLL_N_SHIFT;
|
|
snd_soc_write(codec, WM9081_FLL_CONTROL_4, reg4);
|
|
|
|
reg5 &= ~WM9081_FLL_CLK_REF_DIV_MASK;
|
|
reg5 |= fll_div.fll_clk_ref_div << WM9081_FLL_CLK_REF_DIV_SHIFT;
|
|
snd_soc_write(codec, WM9081_FLL_CONTROL_5, reg5);
|
|
|
|
/* Enable the FLL */
|
|
snd_soc_write(codec, WM9081_FLL_CONTROL_1, reg1 | WM9081_FLL_ENA);
|
|
|
|
/* Then bring CLK_SYS up again if it was disabled */
|
|
if (clk_sys_reg & WM9081_CLK_SYS_ENA)
|
|
snd_soc_write(codec, WM9081_CLOCK_CONTROL_3, clk_sys_reg);
|
|
|
|
dev_dbg(codec->dev, "FLL enabled at %dHz->%dHz\n", Fref, Fout);
|
|
|
|
wm9081->fll_fref = Fref;
|
|
wm9081->fll_fout = Fout;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int configure_clock(struct snd_soc_codec *codec)
|
|
{
|
|
struct wm9081_priv *wm9081 = codec->private_data;
|
|
int new_sysclk, i, target;
|
|
unsigned int reg;
|
|
int ret = 0;
|
|
int mclkdiv = 0;
|
|
int fll = 0;
|
|
|
|
switch (wm9081->sysclk_source) {
|
|
case WM9081_SYSCLK_MCLK:
|
|
if (wm9081->mclk_rate > 12225000) {
|
|
mclkdiv = 1;
|
|
wm9081->sysclk_rate = wm9081->mclk_rate / 2;
|
|
} else {
|
|
wm9081->sysclk_rate = wm9081->mclk_rate;
|
|
}
|
|
wm9081_set_fll(codec, WM9081_SYSCLK_FLL_MCLK, 0, 0);
|
|
break;
|
|
|
|
case WM9081_SYSCLK_FLL_MCLK:
|
|
/* If we have a sample rate calculate a CLK_SYS that
|
|
* gives us a suitable DAC configuration, plus BCLK.
|
|
* Ideally we would check to see if we can clock
|
|
* directly from MCLK and only use the FLL if this is
|
|
* not the case, though care must be taken with free
|
|
* running mode.
|
|
*/
|
|
if (wm9081->master && wm9081->bclk) {
|
|
/* Make sure we can generate CLK_SYS and BCLK
|
|
* and that we've got 3MHz for optimal
|
|
* performance. */
|
|
for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) {
|
|
target = wm9081->fs * clk_sys_rates[i].ratio;
|
|
new_sysclk = target;
|
|
if (target >= wm9081->bclk &&
|
|
target > 3000000)
|
|
break;
|
|
}
|
|
|
|
if (i == ARRAY_SIZE(clk_sys_rates))
|
|
return -EINVAL;
|
|
|
|
} else if (wm9081->fs) {
|
|
for (i = 0; i < ARRAY_SIZE(clk_sys_rates); i++) {
|
|
new_sysclk = clk_sys_rates[i].ratio
|
|
* wm9081->fs;
|
|
if (new_sysclk > 3000000)
|
|
break;
|
|
}
|
|
|
|
if (i == ARRAY_SIZE(clk_sys_rates))
|
|
return -EINVAL;
|
|
|
|
} else {
|
|
new_sysclk = 12288000;
|
|
}
|
|
|
|
ret = wm9081_set_fll(codec, WM9081_SYSCLK_FLL_MCLK,
|
|
wm9081->mclk_rate, new_sysclk);
|
|
if (ret == 0) {
|
|
wm9081->sysclk_rate = new_sysclk;
|
|
|
|
/* Switch SYSCLK over to FLL */
|
|
fll = 1;
|
|
} else {
|
|
wm9081->sysclk_rate = wm9081->mclk_rate;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_1);
|
|
if (mclkdiv)
|
|
reg |= WM9081_MCLKDIV2;
|
|
else
|
|
reg &= ~WM9081_MCLKDIV2;
|
|
snd_soc_write(codec, WM9081_CLOCK_CONTROL_1, reg);
|
|
|
|
reg = snd_soc_read(codec, WM9081_CLOCK_CONTROL_3);
|
|
if (fll)
|
|
reg |= WM9081_CLK_SRC_SEL;
|
|
else
|
|
reg &= ~WM9081_CLK_SRC_SEL;
|
|
snd_soc_write(codec, WM9081_CLOCK_CONTROL_3, reg);
|
|
|
|
dev_dbg(codec->dev, "CLK_SYS is %dHz\n", wm9081->sysclk_rate);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int clk_sys_event(struct snd_soc_dapm_widget *w,
|
|
struct snd_kcontrol *kcontrol, int event)
|
|
{
|
|
struct snd_soc_codec *codec = w->codec;
|
|
struct wm9081_priv *wm9081 = codec->private_data;
|
|
|
|
/* This should be done on init() for bypass paths */
|
|
switch (wm9081->sysclk_source) {
|
|
case WM9081_SYSCLK_MCLK:
|
|
dev_dbg(codec->dev, "Using %dHz MCLK\n", wm9081->mclk_rate);
|
|
break;
|
|
case WM9081_SYSCLK_FLL_MCLK:
|
|
dev_dbg(codec->dev, "Using %dHz MCLK with FLL\n",
|
|
wm9081->mclk_rate);
|
|
break;
|
|
default:
|
|
dev_err(codec->dev, "System clock not configured\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (event) {
|
|
case SND_SOC_DAPM_PRE_PMU:
|
|
configure_clock(codec);
|
|
break;
|
|
|
|
case SND_SOC_DAPM_POST_PMD:
|
|
/* Disable the FLL if it's running */
|
|
wm9081_set_fll(codec, 0, 0, 0);
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct snd_soc_dapm_widget wm9081_dapm_widgets[] = {
|
|
SND_SOC_DAPM_INPUT("IN1"),
|
|
SND_SOC_DAPM_INPUT("IN2"),
|
|
|
|
SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM9081_POWER_MANAGEMENT, 0, 0),
|
|
|
|
SND_SOC_DAPM_MIXER_NAMED_CTL("Mixer", SND_SOC_NOPM, 0, 0,
|
|
mixer, ARRAY_SIZE(mixer)),
|
|
|
|
SND_SOC_DAPM_PGA("LINEOUT PGA", WM9081_POWER_MANAGEMENT, 4, 0, NULL, 0),
|
|
|
|
SND_SOC_DAPM_PGA_E("Speaker PGA", WM9081_POWER_MANAGEMENT, 2, 0, NULL, 0,
|
|
speaker_event,
|
|
SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
|
|
|
|
SND_SOC_DAPM_OUTPUT("LINEOUT"),
|
|
SND_SOC_DAPM_OUTPUT("SPKN"),
|
|
SND_SOC_DAPM_OUTPUT("SPKP"),
|
|
|
|
SND_SOC_DAPM_SUPPLY("CLK_SYS", WM9081_CLOCK_CONTROL_3, 0, 0, clk_sys_event,
|
|
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
|
|
SND_SOC_DAPM_SUPPLY("CLK_DSP", WM9081_CLOCK_CONTROL_3, 1, 0, NULL, 0),
|
|
SND_SOC_DAPM_SUPPLY("TOCLK", WM9081_CLOCK_CONTROL_3, 2, 0, NULL, 0),
|
|
};
|
|
|
|
|
|
static const struct snd_soc_dapm_route audio_paths[] = {
|
|
{ "DAC", NULL, "CLK_SYS" },
|
|
{ "DAC", NULL, "CLK_DSP" },
|
|
|
|
{ "Mixer", "IN1 Switch", "IN1" },
|
|
{ "Mixer", "IN2 Switch", "IN2" },
|
|
{ "Mixer", "Playback Switch", "DAC" },
|
|
|
|
{ "LINEOUT PGA", NULL, "Mixer" },
|
|
{ "LINEOUT PGA", NULL, "TOCLK" },
|
|
{ "LINEOUT PGA", NULL, "CLK_SYS" },
|
|
|
|
{ "LINEOUT", NULL, "LINEOUT PGA" },
|
|
|
|
{ "Speaker PGA", NULL, "Mixer" },
|
|
{ "Speaker PGA", NULL, "TOCLK" },
|
|
{ "Speaker PGA", NULL, "CLK_SYS" },
|
|
|
|
{ "SPKN", NULL, "Speaker PGA" },
|
|
{ "SPKP", NULL, "Speaker PGA" },
|
|
};
|
|
|
|
static int wm9081_set_bias_level(struct snd_soc_codec *codec,
|
|
enum snd_soc_bias_level level)
|
|
{
|
|
u16 reg;
|
|
|
|
switch (level) {
|
|
case SND_SOC_BIAS_ON:
|
|
break;
|
|
|
|
case SND_SOC_BIAS_PREPARE:
|
|
/* VMID=2*40k */
|
|
reg = snd_soc_read(codec, WM9081_VMID_CONTROL);
|
|
reg &= ~WM9081_VMID_SEL_MASK;
|
|
reg |= 0x2;
|
|
snd_soc_write(codec, WM9081_VMID_CONTROL, reg);
|
|
|
|
/* Normal bias current */
|
|
reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1);
|
|
reg &= ~WM9081_STBY_BIAS_ENA;
|
|
snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg);
|
|
break;
|
|
|
|
case SND_SOC_BIAS_STANDBY:
|
|
/* Initial cold start */
|
|
if (codec->bias_level == SND_SOC_BIAS_OFF) {
|
|
/* Disable LINEOUT discharge */
|
|
reg = snd_soc_read(codec, WM9081_ANTI_POP_CONTROL);
|
|
reg &= ~WM9081_LINEOUT_DISCH;
|
|
snd_soc_write(codec, WM9081_ANTI_POP_CONTROL, reg);
|
|
|
|
/* Select startup bias source */
|
|
reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1);
|
|
reg |= WM9081_BIAS_SRC | WM9081_BIAS_ENA;
|
|
snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg);
|
|
|
|
/* VMID 2*4k; Soft VMID ramp enable */
|
|
reg = snd_soc_read(codec, WM9081_VMID_CONTROL);
|
|
reg |= WM9081_VMID_RAMP | 0x6;
|
|
snd_soc_write(codec, WM9081_VMID_CONTROL, reg);
|
|
|
|
mdelay(100);
|
|
|
|
/* Normal bias enable & soft start off */
|
|
reg |= WM9081_BIAS_ENA;
|
|
reg &= ~WM9081_VMID_RAMP;
|
|
snd_soc_write(codec, WM9081_VMID_CONTROL, reg);
|
|
|
|
/* Standard bias source */
|
|
reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1);
|
|
reg &= ~WM9081_BIAS_SRC;
|
|
snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg);
|
|
}
|
|
|
|
/* VMID 2*240k */
|
|
reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1);
|
|
reg &= ~WM9081_VMID_SEL_MASK;
|
|
reg |= 0x40;
|
|
snd_soc_write(codec, WM9081_VMID_CONTROL, reg);
|
|
|
|
/* Standby bias current on */
|
|
reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1);
|
|
reg |= WM9081_STBY_BIAS_ENA;
|
|
snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg);
|
|
break;
|
|
|
|
case SND_SOC_BIAS_OFF:
|
|
/* Startup bias source */
|
|
reg = snd_soc_read(codec, WM9081_BIAS_CONTROL_1);
|
|
reg |= WM9081_BIAS_SRC;
|
|
snd_soc_write(codec, WM9081_BIAS_CONTROL_1, reg);
|
|
|
|
/* Disable VMID and biases with soft ramping */
|
|
reg = snd_soc_read(codec, WM9081_VMID_CONTROL);
|
|
reg &= ~(WM9081_VMID_SEL_MASK | WM9081_BIAS_ENA);
|
|
reg |= WM9081_VMID_RAMP;
|
|
snd_soc_write(codec, WM9081_VMID_CONTROL, reg);
|
|
|
|
/* Actively discharge LINEOUT */
|
|
reg = snd_soc_read(codec, WM9081_ANTI_POP_CONTROL);
|
|
reg |= WM9081_LINEOUT_DISCH;
|
|
snd_soc_write(codec, WM9081_ANTI_POP_CONTROL, reg);
|
|
break;
|
|
}
|
|
|
|
codec->bias_level = level;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm9081_set_dai_fmt(struct snd_soc_dai *dai,
|
|
unsigned int fmt)
|
|
{
|
|
struct snd_soc_codec *codec = dai->codec;
|
|
struct wm9081_priv *wm9081 = codec->private_data;
|
|
unsigned int aif2 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_2);
|
|
|
|
aif2 &= ~(WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV |
|
|
WM9081_BCLK_DIR | WM9081_LRCLK_DIR | WM9081_AIF_FMT_MASK);
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
|
|
case SND_SOC_DAIFMT_CBS_CFS:
|
|
wm9081->master = 0;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBS_CFM:
|
|
aif2 |= WM9081_LRCLK_DIR;
|
|
wm9081->master = 1;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBM_CFS:
|
|
aif2 |= WM9081_BCLK_DIR;
|
|
wm9081->master = 1;
|
|
break;
|
|
case SND_SOC_DAIFMT_CBM_CFM:
|
|
aif2 |= WM9081_LRCLK_DIR | WM9081_BCLK_DIR;
|
|
wm9081->master = 1;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
|
|
case SND_SOC_DAIFMT_DSP_B:
|
|
aif2 |= WM9081_AIF_LRCLK_INV;
|
|
case SND_SOC_DAIFMT_DSP_A:
|
|
aif2 |= 0x3;
|
|
break;
|
|
case SND_SOC_DAIFMT_I2S:
|
|
aif2 |= 0x2;
|
|
break;
|
|
case SND_SOC_DAIFMT_RIGHT_J:
|
|
break;
|
|
case SND_SOC_DAIFMT_LEFT_J:
|
|
aif2 |= 0x1;
|
|
break;
|
|
default:
|
|
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:
|
|
aif2 |= WM9081_AIF_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:
|
|
aif2 |= WM9081_AIF_BCLK_INV | WM9081_AIF_LRCLK_INV;
|
|
break;
|
|
case SND_SOC_DAIFMT_IB_NF:
|
|
aif2 |= WM9081_AIF_BCLK_INV;
|
|
break;
|
|
case SND_SOC_DAIFMT_NB_IF:
|
|
aif2 |= WM9081_AIF_LRCLK_INV;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
snd_soc_write(codec, WM9081_AUDIO_INTERFACE_2, aif2);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm9081_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct snd_soc_codec *codec = dai->codec;
|
|
struct wm9081_priv *wm9081 = codec->private_data;
|
|
int ret, i, best, best_val, cur_val;
|
|
unsigned int clk_ctrl2, aif1, aif2, aif3, aif4;
|
|
|
|
clk_ctrl2 = snd_soc_read(codec, WM9081_CLOCK_CONTROL_2);
|
|
clk_ctrl2 &= ~(WM9081_CLK_SYS_RATE_MASK | WM9081_SAMPLE_RATE_MASK);
|
|
|
|
aif1 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_1);
|
|
|
|
aif2 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_2);
|
|
aif2 &= ~WM9081_AIF_WL_MASK;
|
|
|
|
aif3 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_3);
|
|
aif3 &= ~WM9081_BCLK_DIV_MASK;
|
|
|
|
aif4 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_4);
|
|
aif4 &= ~WM9081_LRCLK_RATE_MASK;
|
|
|
|
wm9081->fs = params_rate(params);
|
|
|
|
if (wm9081->tdm_width) {
|
|
/* If TDM is set up then that fixes our BCLK. */
|
|
int slots = ((aif1 & WM9081_AIFDAC_TDM_MODE_MASK) >>
|
|
WM9081_AIFDAC_TDM_MODE_SHIFT) + 1;
|
|
|
|
wm9081->bclk = wm9081->fs * wm9081->tdm_width * slots;
|
|
} else {
|
|
/* Otherwise work out a BCLK from the sample size */
|
|
wm9081->bclk = 2 * wm9081->fs;
|
|
|
|
switch (params_format(params)) {
|
|
case SNDRV_PCM_FORMAT_S16_LE:
|
|
wm9081->bclk *= 16;
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S20_3LE:
|
|
wm9081->bclk *= 20;
|
|
aif2 |= 0x4;
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S24_LE:
|
|
wm9081->bclk *= 24;
|
|
aif2 |= 0x8;
|
|
break;
|
|
case SNDRV_PCM_FORMAT_S32_LE:
|
|
wm9081->bclk *= 32;
|
|
aif2 |= 0xc;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
dev_dbg(codec->dev, "Target BCLK is %dHz\n", wm9081->bclk);
|
|
|
|
ret = configure_clock(codec);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
/* Select nearest CLK_SYS_RATE */
|
|
best = 0;
|
|
best_val = abs((wm9081->sysclk_rate / clk_sys_rates[0].ratio)
|
|
- wm9081->fs);
|
|
for (i = 1; i < ARRAY_SIZE(clk_sys_rates); i++) {
|
|
cur_val = abs((wm9081->sysclk_rate /
|
|
clk_sys_rates[i].ratio) - wm9081->fs);
|
|
if (cur_val < best_val) {
|
|
best = i;
|
|
best_val = cur_val;
|
|
}
|
|
}
|
|
dev_dbg(codec->dev, "Selected CLK_SYS_RATIO of %d\n",
|
|
clk_sys_rates[best].ratio);
|
|
clk_ctrl2 |= (clk_sys_rates[best].clk_sys_rate
|
|
<< WM9081_CLK_SYS_RATE_SHIFT);
|
|
|
|
/* SAMPLE_RATE */
|
|
best = 0;
|
|
best_val = abs(wm9081->fs - sample_rates[0].rate);
|
|
for (i = 1; i < ARRAY_SIZE(sample_rates); i++) {
|
|
/* Closest match */
|
|
cur_val = abs(wm9081->fs - sample_rates[i].rate);
|
|
if (cur_val < best_val) {
|
|
best = i;
|
|
best_val = cur_val;
|
|
}
|
|
}
|
|
dev_dbg(codec->dev, "Selected SAMPLE_RATE of %dHz\n",
|
|
sample_rates[best].rate);
|
|
clk_ctrl2 |= (sample_rates[best].sample_rate
|
|
<< WM9081_SAMPLE_RATE_SHIFT);
|
|
|
|
/* BCLK_DIV */
|
|
best = 0;
|
|
best_val = INT_MAX;
|
|
for (i = 0; i < ARRAY_SIZE(bclk_divs); i++) {
|
|
cur_val = ((wm9081->sysclk_rate * 10) / bclk_divs[i].div)
|
|
- wm9081->bclk;
|
|
if (cur_val < 0) /* Table is sorted */
|
|
break;
|
|
if (cur_val < best_val) {
|
|
best = i;
|
|
best_val = cur_val;
|
|
}
|
|
}
|
|
wm9081->bclk = (wm9081->sysclk_rate * 10) / bclk_divs[best].div;
|
|
dev_dbg(codec->dev, "Selected BCLK_DIV of %d for %dHz BCLK\n",
|
|
bclk_divs[best].div, wm9081->bclk);
|
|
aif3 |= bclk_divs[best].bclk_div;
|
|
|
|
/* LRCLK is a simple fraction of BCLK */
|
|
dev_dbg(codec->dev, "LRCLK_RATE is %d\n", wm9081->bclk / wm9081->fs);
|
|
aif4 |= wm9081->bclk / wm9081->fs;
|
|
|
|
/* Apply a ReTune Mobile configuration if it's in use */
|
|
if (wm9081->retune) {
|
|
struct wm9081_retune_mobile_config *retune = wm9081->retune;
|
|
struct wm9081_retune_mobile_setting *s;
|
|
int eq1;
|
|
|
|
best = 0;
|
|
best_val = abs(retune->configs[0].rate - wm9081->fs);
|
|
for (i = 0; i < retune->num_configs; i++) {
|
|
cur_val = abs(retune->configs[i].rate - wm9081->fs);
|
|
if (cur_val < best_val) {
|
|
best_val = cur_val;
|
|
best = i;
|
|
}
|
|
}
|
|
s = &retune->configs[best];
|
|
|
|
dev_dbg(codec->dev, "ReTune Mobile %s tuned for %dHz\n",
|
|
s->name, s->rate);
|
|
|
|
/* If the EQ is enabled then disable it while we write out */
|
|
eq1 = snd_soc_read(codec, WM9081_EQ_1) & WM9081_EQ_ENA;
|
|
if (eq1 & WM9081_EQ_ENA)
|
|
snd_soc_write(codec, WM9081_EQ_1, 0);
|
|
|
|
/* Write out the other values */
|
|
for (i = 1; i < ARRAY_SIZE(s->config); i++)
|
|
snd_soc_write(codec, WM9081_EQ_1 + i, s->config[i]);
|
|
|
|
eq1 |= (s->config[0] & ~WM9081_EQ_ENA);
|
|
snd_soc_write(codec, WM9081_EQ_1, eq1);
|
|
}
|
|
|
|
snd_soc_write(codec, WM9081_CLOCK_CONTROL_2, clk_ctrl2);
|
|
snd_soc_write(codec, WM9081_AUDIO_INTERFACE_2, aif2);
|
|
snd_soc_write(codec, WM9081_AUDIO_INTERFACE_3, aif3);
|
|
snd_soc_write(codec, WM9081_AUDIO_INTERFACE_4, aif4);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm9081_digital_mute(struct snd_soc_dai *codec_dai, int mute)
|
|
{
|
|
struct snd_soc_codec *codec = codec_dai->codec;
|
|
unsigned int reg;
|
|
|
|
reg = snd_soc_read(codec, WM9081_DAC_DIGITAL_2);
|
|
|
|
if (mute)
|
|
reg |= WM9081_DAC_MUTE;
|
|
else
|
|
reg &= ~WM9081_DAC_MUTE;
|
|
|
|
snd_soc_write(codec, WM9081_DAC_DIGITAL_2, reg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm9081_set_sysclk(struct snd_soc_dai *codec_dai,
|
|
int clk_id, unsigned int freq, int dir)
|
|
{
|
|
struct snd_soc_codec *codec = codec_dai->codec;
|
|
struct wm9081_priv *wm9081 = codec->private_data;
|
|
|
|
switch (clk_id) {
|
|
case WM9081_SYSCLK_MCLK:
|
|
case WM9081_SYSCLK_FLL_MCLK:
|
|
wm9081->sysclk_source = clk_id;
|
|
wm9081->mclk_rate = freq;
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm9081_set_tdm_slot(struct snd_soc_dai *dai,
|
|
unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
|
|
{
|
|
struct snd_soc_codec *codec = dai->codec;
|
|
struct wm9081_priv *wm9081 = codec->private_data;
|
|
unsigned int aif1 = snd_soc_read(codec, WM9081_AUDIO_INTERFACE_1);
|
|
|
|
aif1 &= ~(WM9081_AIFDAC_TDM_SLOT_MASK | WM9081_AIFDAC_TDM_MODE_MASK);
|
|
|
|
if (slots < 0 || slots > 4)
|
|
return -EINVAL;
|
|
|
|
wm9081->tdm_width = slot_width;
|
|
|
|
if (slots == 0)
|
|
slots = 1;
|
|
|
|
aif1 |= (slots - 1) << WM9081_AIFDAC_TDM_MODE_SHIFT;
|
|
|
|
switch (rx_mask) {
|
|
case 1:
|
|
break;
|
|
case 2:
|
|
aif1 |= 0x10;
|
|
break;
|
|
case 4:
|
|
aif1 |= 0x20;
|
|
break;
|
|
case 8:
|
|
aif1 |= 0x30;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
snd_soc_write(codec, WM9081_AUDIO_INTERFACE_1, aif1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define WM9081_RATES SNDRV_PCM_RATE_8000_96000
|
|
|
|
#define WM9081_FORMATS \
|
|
(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
|
|
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
|
|
|
|
static struct snd_soc_dai_ops wm9081_dai_ops = {
|
|
.hw_params = wm9081_hw_params,
|
|
.set_sysclk = wm9081_set_sysclk,
|
|
.set_fmt = wm9081_set_dai_fmt,
|
|
.digital_mute = wm9081_digital_mute,
|
|
.set_tdm_slot = wm9081_set_tdm_slot,
|
|
};
|
|
|
|
/* We report two channels because the CODEC processes a stereo signal, even
|
|
* though it is only capable of handling a mono output.
|
|
*/
|
|
struct snd_soc_dai wm9081_dai = {
|
|
.name = "WM9081",
|
|
.playback = {
|
|
.stream_name = "HiFi Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = WM9081_RATES,
|
|
.formats = WM9081_FORMATS,
|
|
},
|
|
.ops = &wm9081_dai_ops,
|
|
};
|
|
EXPORT_SYMBOL_GPL(wm9081_dai);
|
|
|
|
|
|
static struct snd_soc_codec *wm9081_codec;
|
|
|
|
static int wm9081_probe(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct snd_soc_codec *codec;
|
|
struct wm9081_priv *wm9081;
|
|
int ret = 0;
|
|
|
|
if (wm9081_codec == NULL) {
|
|
dev_err(&pdev->dev, "Codec device not registered\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
socdev->card->codec = wm9081_codec;
|
|
codec = wm9081_codec;
|
|
wm9081 = codec->private_data;
|
|
|
|
/* register pcms */
|
|
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "failed to create pcms: %d\n", ret);
|
|
goto pcm_err;
|
|
}
|
|
|
|
snd_soc_add_controls(codec, wm9081_snd_controls,
|
|
ARRAY_SIZE(wm9081_snd_controls));
|
|
if (!wm9081->retune) {
|
|
dev_dbg(codec->dev,
|
|
"No ReTune Mobile data, using normal EQ\n");
|
|
snd_soc_add_controls(codec, wm9081_eq_controls,
|
|
ARRAY_SIZE(wm9081_eq_controls));
|
|
}
|
|
|
|
snd_soc_dapm_new_controls(codec, wm9081_dapm_widgets,
|
|
ARRAY_SIZE(wm9081_dapm_widgets));
|
|
snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
|
|
snd_soc_dapm_new_widgets(codec);
|
|
|
|
ret = snd_soc_init_card(socdev);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "failed to register card: %d\n", ret);
|
|
goto card_err;
|
|
}
|
|
|
|
return ret;
|
|
|
|
card_err:
|
|
snd_soc_free_pcms(socdev);
|
|
snd_soc_dapm_free(socdev);
|
|
pcm_err:
|
|
return ret;
|
|
}
|
|
|
|
static int wm9081_remove(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
|
|
snd_soc_free_pcms(socdev);
|
|
snd_soc_dapm_free(socdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int wm9081_suspend(struct platform_device *pdev, pm_message_t state)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
|
|
wm9081_set_bias_level(codec, SND_SOC_BIAS_OFF);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wm9081_resume(struct platform_device *pdev)
|
|
{
|
|
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
|
|
struct snd_soc_codec *codec = socdev->card->codec;
|
|
u16 *reg_cache = codec->reg_cache;
|
|
int i;
|
|
|
|
for (i = 0; i < codec->reg_cache_size; i++) {
|
|
if (i == WM9081_SOFTWARE_RESET)
|
|
continue;
|
|
|
|
snd_soc_write(codec, i, reg_cache[i]);
|
|
}
|
|
|
|
wm9081_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
#define wm9081_suspend NULL
|
|
#define wm9081_resume NULL
|
|
#endif
|
|
|
|
struct snd_soc_codec_device soc_codec_dev_wm9081 = {
|
|
.probe = wm9081_probe,
|
|
.remove = wm9081_remove,
|
|
.suspend = wm9081_suspend,
|
|
.resume = wm9081_resume,
|
|
};
|
|
EXPORT_SYMBOL_GPL(soc_codec_dev_wm9081);
|
|
|
|
static int wm9081_register(struct wm9081_priv *wm9081,
|
|
enum snd_soc_control_type control)
|
|
{
|
|
struct snd_soc_codec *codec = &wm9081->codec;
|
|
int ret;
|
|
u16 reg;
|
|
|
|
if (wm9081_codec) {
|
|
dev_err(codec->dev, "Another WM9081 is registered\n");
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
mutex_init(&codec->mutex);
|
|
INIT_LIST_HEAD(&codec->dapm_widgets);
|
|
INIT_LIST_HEAD(&codec->dapm_paths);
|
|
|
|
codec->private_data = wm9081;
|
|
codec->name = "WM9081";
|
|
codec->owner = THIS_MODULE;
|
|
codec->dai = &wm9081_dai;
|
|
codec->num_dai = 1;
|
|
codec->reg_cache_size = ARRAY_SIZE(wm9081->reg_cache);
|
|
codec->reg_cache = &wm9081->reg_cache;
|
|
codec->bias_level = SND_SOC_BIAS_OFF;
|
|
codec->set_bias_level = wm9081_set_bias_level;
|
|
codec->volatile_register = wm9081_volatile_register;
|
|
|
|
memcpy(codec->reg_cache, wm9081_reg_defaults,
|
|
sizeof(wm9081_reg_defaults));
|
|
|
|
ret = snd_soc_codec_set_cache_io(codec, 8, 16, control);
|
|
if (ret != 0) {
|
|
dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
reg = snd_soc_read(codec, WM9081_SOFTWARE_RESET);
|
|
if (reg != 0x9081) {
|
|
dev_err(codec->dev, "Device is not a WM9081: ID=0x%x\n", reg);
|
|
ret = -EINVAL;
|
|
goto err;
|
|
}
|
|
|
|
ret = wm9081_reset(codec);
|
|
if (ret < 0) {
|
|
dev_err(codec->dev, "Failed to issue reset\n");
|
|
return ret;
|
|
}
|
|
|
|
wm9081_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
|
|
|
|
/* Enable zero cross by default */
|
|
reg = snd_soc_read(codec, WM9081_ANALOGUE_LINEOUT);
|
|
snd_soc_write(codec, WM9081_ANALOGUE_LINEOUT, reg | WM9081_LINEOUTZC);
|
|
reg = snd_soc_read(codec, WM9081_ANALOGUE_SPEAKER_PGA);
|
|
snd_soc_write(codec, WM9081_ANALOGUE_SPEAKER_PGA,
|
|
reg | WM9081_SPKPGAZC);
|
|
|
|
wm9081_dai.dev = codec->dev;
|
|
|
|
wm9081_codec = codec;
|
|
|
|
ret = snd_soc_register_codec(codec);
|
|
if (ret != 0) {
|
|
dev_err(codec->dev, "Failed to register codec: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = snd_soc_register_dai(&wm9081_dai);
|
|
if (ret != 0) {
|
|
dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
|
|
snd_soc_unregister_codec(codec);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err:
|
|
kfree(wm9081);
|
|
return ret;
|
|
}
|
|
|
|
static void wm9081_unregister(struct wm9081_priv *wm9081)
|
|
{
|
|
wm9081_set_bias_level(&wm9081->codec, SND_SOC_BIAS_OFF);
|
|
snd_soc_unregister_dai(&wm9081_dai);
|
|
snd_soc_unregister_codec(&wm9081->codec);
|
|
kfree(wm9081);
|
|
wm9081_codec = NULL;
|
|
}
|
|
|
|
static __devinit int wm9081_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct wm9081_priv *wm9081;
|
|
struct snd_soc_codec *codec;
|
|
|
|
wm9081 = kzalloc(sizeof(struct wm9081_priv), GFP_KERNEL);
|
|
if (wm9081 == NULL)
|
|
return -ENOMEM;
|
|
|
|
codec = &wm9081->codec;
|
|
codec->hw_write = (hw_write_t)i2c_master_send;
|
|
wm9081->retune = i2c->dev.platform_data;
|
|
|
|
i2c_set_clientdata(i2c, wm9081);
|
|
codec->control_data = i2c;
|
|
|
|
codec->dev = &i2c->dev;
|
|
|
|
return wm9081_register(wm9081, SND_SOC_I2C);
|
|
}
|
|
|
|
static __devexit int wm9081_i2c_remove(struct i2c_client *client)
|
|
{
|
|
struct wm9081_priv *wm9081 = i2c_get_clientdata(client);
|
|
wm9081_unregister(wm9081);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static int wm9081_i2c_suspend(struct i2c_client *client, pm_message_t msg)
|
|
{
|
|
return snd_soc_suspend_device(&client->dev);
|
|
}
|
|
|
|
static int wm9081_i2c_resume(struct i2c_client *client)
|
|
{
|
|
return snd_soc_resume_device(&client->dev);
|
|
}
|
|
#else
|
|
#define wm9081_i2c_suspend NULL
|
|
#define wm9081_i2c_resume NULL
|
|
#endif
|
|
|
|
static const struct i2c_device_id wm9081_i2c_id[] = {
|
|
{ "wm9081", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, wm9081_i2c_id);
|
|
|
|
static struct i2c_driver wm9081_i2c_driver = {
|
|
.driver = {
|
|
.name = "wm9081",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = wm9081_i2c_probe,
|
|
.remove = __devexit_p(wm9081_i2c_remove),
|
|
.suspend = wm9081_i2c_suspend,
|
|
.resume = wm9081_i2c_resume,
|
|
.id_table = wm9081_i2c_id,
|
|
};
|
|
|
|
static int __init wm9081_modinit(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = i2c_add_driver(&wm9081_i2c_driver);
|
|
if (ret != 0) {
|
|
printk(KERN_ERR "Failed to register WM9081 I2C driver: %d\n",
|
|
ret);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
module_init(wm9081_modinit);
|
|
|
|
static void __exit wm9081_exit(void)
|
|
{
|
|
i2c_del_driver(&wm9081_i2c_driver);
|
|
}
|
|
module_exit(wm9081_exit);
|
|
|
|
|
|
MODULE_DESCRIPTION("ASoC WM9081 driver");
|
|
MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
|
|
MODULE_LICENSE("GPL");
|