--- /dev/null
+/*
+ * wm8900.c -- WM8900 ALSA Soc Audio driver
+ *
+ * Copyright 2007, 2008 Wolfson Microelectronics PLC.
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * TODO:
+ * - Tristating.
+ * - TDM.
+ * - Jack detect.
+ * - FLL source configuration, currently only MCLK is supported.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/version.h>
+#include <linux/kernel.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 "wm8900.h"
+
+/* WM8900 register space */
+#define WM8900_REG_RESET 0x0
+#define WM8900_REG_ID 0x0
+#define WM8900_REG_POWER1 0x1
+#define WM8900_REG_POWER2 0x2
+#define WM8900_REG_POWER3 0x3
+#define WM8900_REG_AUDIO1 0x4
+#define WM8900_REG_AUDIO2 0x5
+#define WM8900_REG_CLOCKING1 0x6
+#define WM8900_REG_CLOCKING2 0x7
+#define WM8900_REG_AUDIO3 0x8
+#define WM8900_REG_AUDIO4 0x9
+#define WM8900_REG_DACCTRL 0xa
+#define WM8900_REG_LDAC_DV 0xb
+#define WM8900_REG_RDAC_DV 0xc
+#define WM8900_REG_SIDETONE 0xd
+#define WM8900_REG_ADCCTRL 0xe
+#define WM8900_REG_LADC_DV 0xf
+#define WM8900_REG_RADC_DV 0x10
+#define WM8900_REG_GPIO 0x12
+#define WM8900_REG_INCTL 0x15
+#define WM8900_REG_LINVOL 0x16
+#define WM8900_REG_RINVOL 0x17
+#define WM8900_REG_INBOOSTMIX1 0x18
+#define WM8900_REG_INBOOSTMIX2 0x19
+#define WM8900_REG_ADCPATH 0x1a
+#define WM8900_REG_AUXBOOST 0x1b
+#define WM8900_REG_ADDCTL 0x1e
+#define WM8900_REG_FLLCTL1 0x24
+#define WM8900_REG_FLLCTL2 0x25
+#define WM8900_REG_FLLCTL3 0x26
+#define WM8900_REG_FLLCTL4 0x27
+#define WM8900_REG_FLLCTL5 0x28
+#define WM8900_REG_FLLCTL6 0x29
+#define WM8900_REG_LOUTMIXCTL1 0x2c
+#define WM8900_REG_ROUTMIXCTL1 0x2d
+#define WM8900_REG_BYPASS1 0x2e
+#define WM8900_REG_BYPASS2 0x2f
+#define WM8900_REG_AUXOUT_CTL 0x30
+#define WM8900_REG_LOUT1CTL 0x33
+#define WM8900_REG_ROUT1CTL 0x34
+#define WM8900_REG_LOUT2CTL 0x35
+#define WM8900_REG_ROUT2CTL 0x36
+#define WM8900_REG_HPCTL1 0x3a
+#define WM8900_REG_OUTBIASCTL 0x73
+
+#define WM8900_MAXREG 0x80
+
+#define WM8900_REG_ADDCTL_OUT1_DIS 0x80
+#define WM8900_REG_ADDCTL_OUT2_DIS 0x40
+#define WM8900_REG_ADDCTL_VMID_DIS 0x20
+#define WM8900_REG_ADDCTL_BIAS_SRC 0x10
+#define WM8900_REG_ADDCTL_VMID_SOFTST 0x04
+#define WM8900_REG_ADDCTL_TEMP_SD 0x02
+
+#define WM8900_REG_GPIO_TEMP_ENA 0x2
+
+#define WM8900_REG_POWER1_STARTUP_BIAS_ENA 0x0100
+#define WM8900_REG_POWER1_BIAS_ENA 0x0008
+#define WM8900_REG_POWER1_VMID_BUF_ENA 0x0004
+#define WM8900_REG_POWER1_FLL_ENA 0x0040
+
+#define WM8900_REG_POWER2_SYSCLK_ENA 0x8000
+#define WM8900_REG_POWER2_ADCL_ENA 0x0002
+#define WM8900_REG_POWER2_ADCR_ENA 0x0001
+
+#define WM8900_REG_POWER3_DACL_ENA 0x0002
+#define WM8900_REG_POWER3_DACR_ENA 0x0001
+
+#define WM8900_REG_AUDIO1_AIF_FMT_MASK 0x0018
+#define WM8900_REG_AUDIO1_LRCLK_INV 0x0080
+#define WM8900_REG_AUDIO1_BCLK_INV 0x0100
+
+#define WM8900_REG_CLOCKING1_BCLK_DIR 0x1
+#define WM8900_REG_CLOCKING1_MCLK_SRC 0x100
+#define WM8900_REG_CLOCKING1_BCLK_MASK (~0x01e)
+#define WM8900_REG_CLOCKING1_OPCLK_MASK (~0x7000)
+
+#define WM8900_REG_CLOCKING2_ADC_CLKDIV 0xe0
+#define WM8900_REG_CLOCKING2_DAC_CLKDIV 0x1c
+
+#define WM8900_REG_DACCTRL_MUTE 0x004
+#define WM8900_REG_DACCTRL_AIF_LRCLKRATE 0x400
+
+#define WM8900_REG_AUDIO3_ADCLRC_DIR 0x0800
+
+#define WM8900_REG_AUDIO4_DACLRC_DIR 0x0800
+
+#define WM8900_REG_FLLCTL1_OSC_ENA 0x100
+
+#define WM8900_REG_FLLCTL6_FLL_SLOW_LOCK_REF 0x100
+
+#define WM8900_REG_HPCTL1_HP_IPSTAGE_ENA 0x80
+#define WM8900_REG_HPCTL1_HP_OPSTAGE_ENA 0x40
+#define WM8900_REG_HPCTL1_HP_CLAMP_IP 0x20
+#define WM8900_REG_HPCTL1_HP_CLAMP_OP 0x10
+#define WM8900_REG_HPCTL1_HP_SHORT 0x08
+#define WM8900_REG_HPCTL1_HP_SHORT2 0x04
+
+#define WM8900_LRC_MASK 0xfc00
+
+struct snd_soc_codec_device soc_codec_dev_wm8900;
+
+struct wm8900_priv {
+ u32 fll_in; /* FLL input frequency */
+ u32 fll_out; /* FLL output frequency */
+};
+
+/*
+ * wm8900 register cache. We can't read the entire register space and we
+ * have slow control buses so we cache the registers.
+ */
+static const u16 wm8900_reg_defaults[WM8900_MAXREG] = {
+ 0x8900, 0x0000,
+ 0xc000, 0x0000,
+ 0x4050, 0x4000,
+ 0x0008, 0x0000,
+ 0x0040, 0x0040,
+ 0x1004, 0x00c0,
+ 0x00c0, 0x0000,
+ 0x0100, 0x00c0,
+ 0x00c0, 0x0000,
+ 0xb001, 0x0000,
+ 0x0000, 0x0044,
+ 0x004c, 0x004c,
+ 0x0044, 0x0044,
+ 0x0000, 0x0044,
+ 0x0000, 0x0000,
+ 0x0002, 0x0000,
+ 0x0000, 0x0000,
+ 0x0000, 0x0000,
+ 0x0008, 0x0000,
+ 0x0000, 0x0008,
+ 0x0097, 0x0100,
+ 0x0000, 0x0000,
+ 0x0050, 0x0050,
+ 0x0055, 0x0055,
+ 0x0055, 0x0000,
+ 0x0000, 0x0079,
+ 0x0079, 0x0079,
+ 0x0079, 0x0000,
+ /* Remaining registers all zero */
+};
+
+/*
+ * read wm8900 register cache
+ */
+static inline unsigned int wm8900_read_reg_cache(struct snd_soc_codec *codec,
+ unsigned int reg)
+{
+ u16 *cache = codec->reg_cache;
+
+ BUG_ON(reg >= WM8900_MAXREG);
+
+ if (reg == WM8900_REG_ID)
+ return 0;
+
+ return cache[reg];
+}
+
+/*
+ * write wm8900 register cache
+ */
+static inline void wm8900_write_reg_cache(struct snd_soc_codec *codec,
+ u16 reg, unsigned int value)
+{
+ u16 *cache = codec->reg_cache;
+
+ BUG_ON(reg >= WM8900_MAXREG);
+
+ cache[reg] = value;
+}
+
+/*
+ * write to the WM8900 register space
+ */
+static int wm8900_write(struct snd_soc_codec *codec, unsigned int reg,
+ unsigned int value)
+{
+ u8 data[3];
+
+ if (value == wm8900_read_reg_cache(codec, reg))
+ return 0;
+
+ /* data is
+ * D15..D9 WM8900 register offset
+ * D8...D0 register data
+ */
+ data[0] = reg;
+ data[1] = value >> 8;
+ data[2] = value & 0x00ff;
+
+ wm8900_write_reg_cache(codec, reg, value);
+ if (codec->hw_write(codec->control_data, data, 3) == 3)
+ return 0;
+ else
+ return -EIO;
+}
+
+/*
+ * Read from the wm8900.
+ */
+static unsigned int wm8900_chip_read(struct snd_soc_codec *codec, u8 reg)
+{
+ struct i2c_msg xfer[2];
+ u16 data;
+ int ret;
+ struct i2c_client *client = codec->control_data;
+
+ BUG_ON(reg != WM8900_REG_ID && reg != WM8900_REG_POWER1);
+
+ /* Write register */
+ xfer[0].addr = client->addr;
+ xfer[0].flags = 0;
+ xfer[0].len = 1;
+ xfer[0].buf = ®
+
+ /* Read data */
+ xfer[1].addr = client->addr;
+ xfer[1].flags = I2C_M_RD;
+ xfer[1].len = 2;
+ xfer[1].buf = (u8 *)&data;
+
+ ret = i2c_transfer(client->adapter, xfer, 2);
+ if (ret != 2) {
+ printk(KERN_CRIT "i2c_transfer returned %d\n", ret);
+ return 0;
+ }
+
+ return (data >> 8) | ((data & 0xff) << 8);
+}
+
+/*
+ * Read from the WM8900 register space. Most registers can't be read
+ * and are therefore supplied from cache.
+ */
+static unsigned int wm8900_read(struct snd_soc_codec *codec, unsigned int reg)
+{
+ switch (reg) {
+ case WM8900_REG_ID:
+ return wm8900_chip_read(codec, reg);
+ default:
+ return wm8900_read_reg_cache(codec, reg);
+ }
+}
+
+static void wm8900_reset(struct snd_soc_codec *codec)
+{
+ wm8900_write(codec, WM8900_REG_RESET, 0);
+
+ memcpy(codec->reg_cache, wm8900_reg_defaults,
+ sizeof(codec->reg_cache));
+}
+
+static int wm8900_hp_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_codec *codec = w->codec;
+ u16 hpctl1 = wm8900_read(codec, WM8900_REG_HPCTL1);
+
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ /* Clamp headphone outputs */
+ hpctl1 = WM8900_REG_HPCTL1_HP_CLAMP_IP |
+ WM8900_REG_HPCTL1_HP_CLAMP_OP;
+ wm8900_write(codec, WM8900_REG_HPCTL1, hpctl1);
+ break;
+
+ case SND_SOC_DAPM_POST_PMU:
+ /* Enable the input stage */
+ hpctl1 &= ~WM8900_REG_HPCTL1_HP_CLAMP_IP;
+ hpctl1 |= WM8900_REG_HPCTL1_HP_SHORT |
+ WM8900_REG_HPCTL1_HP_SHORT2 |
+ WM8900_REG_HPCTL1_HP_IPSTAGE_ENA;
+ wm8900_write(codec, WM8900_REG_HPCTL1, hpctl1);
+
+ msleep(400);
+
+ /* Enable the output stage */
+ hpctl1 &= ~WM8900_REG_HPCTL1_HP_CLAMP_OP;
+ hpctl1 |= WM8900_REG_HPCTL1_HP_OPSTAGE_ENA;
+ wm8900_write(codec, WM8900_REG_HPCTL1, hpctl1);
+
+ /* Remove the shorts */
+ hpctl1 &= ~WM8900_REG_HPCTL1_HP_SHORT2;
+ wm8900_write(codec, WM8900_REG_HPCTL1, hpctl1);
+ hpctl1 &= ~WM8900_REG_HPCTL1_HP_SHORT;
+ wm8900_write(codec, WM8900_REG_HPCTL1, hpctl1);
+ break;
+
+ case SND_SOC_DAPM_PRE_PMD:
+ /* Short the output */
+ hpctl1 |= WM8900_REG_HPCTL1_HP_SHORT;
+ wm8900_write(codec, WM8900_REG_HPCTL1, hpctl1);
+
+ /* Disable the output stage */
+ hpctl1 &= ~WM8900_REG_HPCTL1_HP_OPSTAGE_ENA;
+ wm8900_write(codec, WM8900_REG_HPCTL1, hpctl1);
+
+ /* Clamp the outputs and power down input */
+ hpctl1 |= WM8900_REG_HPCTL1_HP_CLAMP_IP |
+ WM8900_REG_HPCTL1_HP_CLAMP_OP;
+ hpctl1 &= ~WM8900_REG_HPCTL1_HP_IPSTAGE_ENA;
+ wm8900_write(codec, WM8900_REG_HPCTL1, hpctl1);
+ break;
+
+ case SND_SOC_DAPM_POST_PMD:
+ /* Disable everything */
+ wm8900_write(codec, WM8900_REG_HPCTL1, 0);
+ break;
+
+ default:
+ BUG();
+ }
+
+ return 0;
+}
+
+static const DECLARE_TLV_DB_SCALE(out_pga_tlv, -5700, 100, 0);
+
+static const DECLARE_TLV_DB_SCALE(out_mix_tlv, -1500, 300, 0);
+
+static const DECLARE_TLV_DB_SCALE(in_boost_tlv, -1200, 600, 0);
+
+static const DECLARE_TLV_DB_SCALE(in_pga_tlv, -1200, 100, 0);
+
+static const DECLARE_TLV_DB_SCALE(dac_boost_tlv, 0, 600, 0);
+
+static const DECLARE_TLV_DB_SCALE(dac_tlv, -7200, 75, 1);
+
+static const DECLARE_TLV_DB_SCALE(adc_svol_tlv, -3600, 300, 0);
+
+static const DECLARE_TLV_DB_SCALE(adc_tlv, -7200, 75, 1);
+
+static const char *mic_bias_level_txt[] = { "0.9*AVDD", "0.65*AVDD" };
+
+static const struct soc_enum mic_bias_level =
+SOC_ENUM_SINGLE(WM8900_REG_INCTL, 8, 2, mic_bias_level_txt);
+
+static const char *dac_mute_rate_txt[] = { "Fast", "Slow" };
+
+static const struct soc_enum dac_mute_rate =
+SOC_ENUM_SINGLE(WM8900_REG_DACCTRL, 7, 2, dac_mute_rate_txt);
+
+static const char *dac_deemphasis_txt[] = {
+ "Disabled", "32kHz", "44.1kHz", "48kHz"
+};
+
+static const struct soc_enum dac_deemphasis =
+SOC_ENUM_SINGLE(WM8900_REG_DACCTRL, 4, 4, dac_deemphasis_txt);
+
+static const char *adc_hpf_cut_txt[] = {
+ "Hi-fi mode", "Voice mode 1", "Voice mode 2", "Voice mode 3"
+};
+
+static const struct soc_enum adc_hpf_cut =
+SOC_ENUM_SINGLE(WM8900_REG_ADCCTRL, 5, 4, adc_hpf_cut_txt);
+
+static const char *lr_txt[] = {
+ "Left", "Right"
+};
+
+static const struct soc_enum aifl_src =
+SOC_ENUM_SINGLE(WM8900_REG_AUDIO1, 15, 2, lr_txt);
+
+static const struct soc_enum aifr_src =
+SOC_ENUM_SINGLE(WM8900_REG_AUDIO1, 14, 2, lr_txt);
+
+static const struct soc_enum dacl_src =
+SOC_ENUM_SINGLE(WM8900_REG_AUDIO2, 15, 2, lr_txt);
+
+static const struct soc_enum dacr_src =
+SOC_ENUM_SINGLE(WM8900_REG_AUDIO2, 14, 2, lr_txt);
+
+static const char *sidetone_txt[] = {
+ "Disabled", "Left ADC", "Right ADC"
+};
+
+static const struct soc_enum dacl_sidetone =
+SOC_ENUM_SINGLE(WM8900_REG_SIDETONE, 2, 3, sidetone_txt);
+
+static const struct soc_enum dacr_sidetone =
+SOC_ENUM_SINGLE(WM8900_REG_SIDETONE, 0, 3, sidetone_txt);
+
+static const struct snd_kcontrol_new wm8900_snd_controls[] = {
+SOC_ENUM("Mic Bias Level", mic_bias_level),
+
+SOC_SINGLE_TLV("Left Input PGA Volume", WM8900_REG_LINVOL, 0, 31, 0,
+ in_pga_tlv),
+SOC_SINGLE("Left Input PGA Switch", WM8900_REG_LINVOL, 6, 1, 1),
+SOC_SINGLE("Left Input PGA ZC Switch", WM8900_REG_LINVOL, 7, 1, 0),
+
+SOC_SINGLE_TLV("Right Input PGA Volume", WM8900_REG_RINVOL, 0, 31, 0,
+ in_pga_tlv),
+SOC_SINGLE("Right Input PGA Switch", WM8900_REG_RINVOL, 6, 1, 1),
+SOC_SINGLE("Right Input PGA ZC Switch", WM8900_REG_RINVOL, 7, 1, 0),
+
+SOC_SINGLE("DAC Soft Mute Switch", WM8900_REG_DACCTRL, 6, 1, 1),
+SOC_ENUM("DAC Mute Rate", dac_mute_rate),
+SOC_SINGLE("DAC Mono Switch", WM8900_REG_DACCTRL, 9, 1, 0),
+SOC_ENUM("DAC Deemphasis", dac_deemphasis),
+SOC_SINGLE("DAC Sloping Stopband Filter Switch", WM8900_REG_DACCTRL, 8, 1, 0),
+SOC_SINGLE("DAC Sigma-Delta Modulator Clock Switch", WM8900_REG_DACCTRL,
+ 12, 1, 0),
+
+SOC_SINGLE("ADC HPF Switch", WM8900_REG_ADCCTRL, 8, 1, 0),
+SOC_ENUM("ADC HPF Cut-Off", adc_hpf_cut),
+SOC_DOUBLE("ADC Invert Switch", WM8900_REG_ADCCTRL, 1, 0, 1, 0),
+SOC_SINGLE_TLV("Left ADC Sidetone Volume", WM8900_REG_SIDETONE, 9, 12, 0,
+ adc_svol_tlv),
+SOC_SINGLE_TLV("Right ADC Sidetone Volume", WM8900_REG_SIDETONE, 5, 12, 0,
+ adc_svol_tlv),
+SOC_ENUM("Left Digital Audio Source", aifl_src),
+SOC_ENUM("Right Digital Audio Source", aifr_src),
+
+SOC_SINGLE_TLV("DAC Input Boost Volume", WM8900_REG_AUDIO2, 10, 4, 0,
+ dac_boost_tlv),
+SOC_ENUM("Left DAC Source", dacl_src),
+SOC_ENUM("Right DAC Source", dacr_src),
+SOC_ENUM("Left DAC Sidetone", dacl_sidetone),
+SOC_ENUM("Right DAC Sidetone", dacr_sidetone),
+SOC_DOUBLE("DAC Invert Switch", WM8900_REG_DACCTRL, 1, 0, 1, 0),
+
+SOC_DOUBLE_R_TLV("Digital Playback Volume",
+ WM8900_REG_LDAC_DV, WM8900_REG_RDAC_DV,
+ 1, 96, 0, dac_tlv),
+SOC_DOUBLE_R_TLV("Digital Capture Volume",
+ WM8900_REG_LADC_DV, WM8900_REG_RADC_DV, 1, 119, 0, adc_tlv),
+
+SOC_SINGLE_TLV("LINPUT3 Bypass Volume", WM8900_REG_LOUTMIXCTL1, 4, 7, 0,
+ out_mix_tlv),
+SOC_SINGLE_TLV("RINPUT3 Bypass Volume", WM8900_REG_ROUTMIXCTL1, 4, 7, 0,
+ out_mix_tlv),
+SOC_SINGLE_TLV("Left AUX Bypass Volume", WM8900_REG_AUXOUT_CTL, 4, 7, 0,
+ out_mix_tlv),
+SOC_SINGLE_TLV("Right AUX Bypass Volume", WM8900_REG_AUXOUT_CTL, 0, 7, 0,
+ out_mix_tlv),
+
+SOC_SINGLE_TLV("LeftIn to RightOut Mixer Volume", WM8900_REG_BYPASS1, 0, 7, 0,
+ out_mix_tlv),
+SOC_SINGLE_TLV("LeftIn to LeftOut Mixer Volume", WM8900_REG_BYPASS1, 4, 7, 0,
+ out_mix_tlv),
+SOC_SINGLE_TLV("RightIn to LeftOut Mixer Volume", WM8900_REG_BYPASS2, 0, 7, 0,
+ out_mix_tlv),
+SOC_SINGLE_TLV("RightIn to RightOut Mixer Volume", WM8900_REG_BYPASS2, 4, 7, 0,
+ out_mix_tlv),
+
+SOC_SINGLE_TLV("IN2L Boost Volume", WM8900_REG_INBOOSTMIX1, 0, 3, 0,
+ in_boost_tlv),
+SOC_SINGLE_TLV("IN3L Boost Volume", WM8900_REG_INBOOSTMIX1, 4, 3, 0,
+ in_boost_tlv),
+SOC_SINGLE_TLV("IN2R Boost Volume", WM8900_REG_INBOOSTMIX2, 0, 3, 0,
+ in_boost_tlv),
+SOC_SINGLE_TLV("IN3R Boost Volume", WM8900_REG_INBOOSTMIX2, 4, 3, 0,
+ in_boost_tlv),
+SOC_SINGLE_TLV("Left AUX Boost Volume", WM8900_REG_AUXBOOST, 4, 3, 0,
+ in_boost_tlv),
+SOC_SINGLE_TLV("Right AUX Boost Volume", WM8900_REG_AUXBOOST, 0, 3, 0,
+ in_boost_tlv),
+
+SOC_DOUBLE_R_TLV("LINEOUT1 Volume", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL,
+ 0, 63, 0, out_pga_tlv),
+SOC_DOUBLE_R("LINEOUT1 Switch", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL,
+ 6, 1, 1),
+SOC_DOUBLE_R("LINEOUT1 ZC Switch", WM8900_REG_LOUT1CTL, WM8900_REG_ROUT1CTL,
+ 7, 1, 0),
+
+SOC_DOUBLE_R_TLV("LINEOUT2 Volume",
+ WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL,
+ 0, 63, 0, out_pga_tlv),
+SOC_DOUBLE_R("LINEOUT2 Switch",
+ WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL, 6, 1, 1),
+SOC_DOUBLE_R("LINEOUT2 ZC Switch",
+ WM8900_REG_LOUT2CTL, WM8900_REG_ROUT2CTL, 7, 1, 0),
+SOC_SINGLE("LINEOUT2 LP -12dB", WM8900_REG_LOUTMIXCTL1,
+ 0, 1, 1),
+
+};
+
+/* add non dapm controls */
+static int wm8900_add_controls(struct snd_soc_codec *codec)
+{
+ int err, i;
+
+ for (i = 0; i < ARRAY_SIZE(wm8900_snd_controls); i++) {
+ err = snd_ctl_add(codec->card,
+ snd_soc_cnew(&wm8900_snd_controls[i],
+ codec, NULL));
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+
+static const struct snd_kcontrol_new wm8900_dapm_loutput2_control =
+SOC_DAPM_SINGLE("LINEOUT2L Switch", WM8900_REG_POWER3, 6, 1, 0);
+
+static const struct snd_kcontrol_new wm8900_dapm_routput2_control =
+SOC_DAPM_SINGLE("LINEOUT2R Switch", WM8900_REG_POWER3, 5, 1, 0);
+
+static const struct snd_kcontrol_new wm8900_loutmix_controls[] = {
+SOC_DAPM_SINGLE("LINPUT3 Bypass Switch", WM8900_REG_LOUTMIXCTL1, 7, 1, 0),
+SOC_DAPM_SINGLE("AUX Bypass Switch", WM8900_REG_AUXOUT_CTL, 7, 1, 0),
+SOC_DAPM_SINGLE("Left Input Mixer Switch", WM8900_REG_BYPASS1, 7, 1, 0),
+SOC_DAPM_SINGLE("Right Input Mixer Switch", WM8900_REG_BYPASS2, 3, 1, 0),
+SOC_DAPM_SINGLE("DACL Switch", WM8900_REG_LOUTMIXCTL1, 8, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8900_routmix_controls[] = {
+SOC_DAPM_SINGLE("RINPUT3 Bypass Switch", WM8900_REG_ROUTMIXCTL1, 7, 1, 0),
+SOC_DAPM_SINGLE("AUX Bypass Switch", WM8900_REG_AUXOUT_CTL, 3, 1, 0),
+SOC_DAPM_SINGLE("Left Input Mixer Switch", WM8900_REG_BYPASS1, 3, 1, 0),
+SOC_DAPM_SINGLE("Right Input Mixer Switch", WM8900_REG_BYPASS2, 7, 1, 0),
+SOC_DAPM_SINGLE("DACR Switch", WM8900_REG_ROUTMIXCTL1, 8, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8900_linmix_controls[] = {
+SOC_DAPM_SINGLE("LINPUT2 Switch", WM8900_REG_INBOOSTMIX1, 2, 1, 1),
+SOC_DAPM_SINGLE("LINPUT3 Switch", WM8900_REG_INBOOSTMIX1, 6, 1, 1),
+SOC_DAPM_SINGLE("AUX Switch", WM8900_REG_AUXBOOST, 6, 1, 1),
+SOC_DAPM_SINGLE("Input PGA Switch", WM8900_REG_ADCPATH, 6, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8900_rinmix_controls[] = {
+SOC_DAPM_SINGLE("RINPUT2 Switch", WM8900_REG_INBOOSTMIX2, 2, 1, 1),
+SOC_DAPM_SINGLE("RINPUT3 Switch", WM8900_REG_INBOOSTMIX2, 6, 1, 1),
+SOC_DAPM_SINGLE("AUX Switch", WM8900_REG_AUXBOOST, 2, 1, 1),
+SOC_DAPM_SINGLE("Input PGA Switch", WM8900_REG_ADCPATH, 2, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8900_linpga_controls[] = {
+SOC_DAPM_SINGLE("LINPUT1 Switch", WM8900_REG_INCTL, 6, 1, 0),
+SOC_DAPM_SINGLE("LINPUT2 Switch", WM8900_REG_INCTL, 5, 1, 0),
+SOC_DAPM_SINGLE("LINPUT3 Switch", WM8900_REG_INCTL, 4, 1, 0),
+};
+
+static const struct snd_kcontrol_new wm8900_rinpga_controls[] = {
+SOC_DAPM_SINGLE("RINPUT1 Switch", WM8900_REG_INCTL, 2, 1, 0),
+SOC_DAPM_SINGLE("RINPUT2 Switch", WM8900_REG_INCTL, 1, 1, 0),
+SOC_DAPM_SINGLE("RINPUT3 Switch", WM8900_REG_INCTL, 0, 1, 0),
+};
+
+static const char *wm9700_lp_mux[] = { "Disabled", "Enabled" };
+
+static const struct soc_enum wm8900_lineout2_lp_mux =
+SOC_ENUM_SINGLE(WM8900_REG_LOUTMIXCTL1, 1, 2, wm9700_lp_mux);
+
+static const struct snd_kcontrol_new wm8900_lineout2_lp =
+SOC_DAPM_ENUM("Route", wm8900_lineout2_lp_mux);
+
+static const struct snd_soc_dapm_widget wm8900_dapm_widgets[] = {
+
+/* Externally visible pins */
+SND_SOC_DAPM_OUTPUT("LINEOUT1L"),
+SND_SOC_DAPM_OUTPUT("LINEOUT1R"),
+SND_SOC_DAPM_OUTPUT("LINEOUT2L"),
+SND_SOC_DAPM_OUTPUT("LINEOUT2R"),
+SND_SOC_DAPM_OUTPUT("HP_L"),
+SND_SOC_DAPM_OUTPUT("HP_R"),
+
+SND_SOC_DAPM_INPUT("RINPUT1"),
+SND_SOC_DAPM_INPUT("LINPUT1"),
+SND_SOC_DAPM_INPUT("RINPUT2"),
+SND_SOC_DAPM_INPUT("LINPUT2"),
+SND_SOC_DAPM_INPUT("RINPUT3"),
+SND_SOC_DAPM_INPUT("LINPUT3"),
+SND_SOC_DAPM_INPUT("AUX"),
+
+SND_SOC_DAPM_VMID("VMID"),
+
+/* Input */
+SND_SOC_DAPM_MIXER("Left Input PGA", WM8900_REG_POWER2, 3, 0,
+ wm8900_linpga_controls,
+ ARRAY_SIZE(wm8900_linpga_controls)),
+SND_SOC_DAPM_MIXER("Right Input PGA", WM8900_REG_POWER2, 2, 0,
+ wm8900_rinpga_controls,
+ ARRAY_SIZE(wm8900_rinpga_controls)),
+
+SND_SOC_DAPM_MIXER("Left Input Mixer", WM8900_REG_POWER2, 5, 0,
+ wm8900_linmix_controls,
+ ARRAY_SIZE(wm8900_linmix_controls)),
+SND_SOC_DAPM_MIXER("Right Input Mixer", WM8900_REG_POWER2, 4, 0,
+ wm8900_rinmix_controls,
+ ARRAY_SIZE(wm8900_rinmix_controls)),
+
+SND_SOC_DAPM_MICBIAS("Mic Bias", WM8900_REG_POWER1, 4, 0),
+
+SND_SOC_DAPM_ADC("ADCL", "Left HiFi Capture", WM8900_REG_POWER2, 1, 0),
+SND_SOC_DAPM_ADC("ADCR", "Right HiFi Capture", WM8900_REG_POWER2, 0, 0),
+
+/* Output */
+SND_SOC_DAPM_DAC("DACL", "Left HiFi Playback", WM8900_REG_POWER3, 1, 0),
+SND_SOC_DAPM_DAC("DACR", "Right HiFi Playback", WM8900_REG_POWER3, 0, 0),
+
+SND_SOC_DAPM_PGA_E("Headphone Amplifier", WM8900_REG_POWER3, 7, 0, NULL, 0,
+ wm8900_hp_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
+ SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD),
+
+SND_SOC_DAPM_PGA("LINEOUT1L PGA", WM8900_REG_POWER2, 8, 0, NULL, 0),
+SND_SOC_DAPM_PGA("LINEOUT1R PGA", WM8900_REG_POWER2, 7, 0, NULL, 0),
+
+SND_SOC_DAPM_MUX("LINEOUT2 LP", SND_SOC_NOPM, 0, 0, &wm8900_lineout2_lp),
+SND_SOC_DAPM_PGA("LINEOUT2L PGA", WM8900_REG_POWER3, 6, 0, NULL, 0),
+SND_SOC_DAPM_PGA("LINEOUT2R PGA", WM8900_REG_POWER3, 5, 0, NULL, 0),
+
+SND_SOC_DAPM_MIXER("Left Output Mixer", WM8900_REG_POWER3, 3, 0,
+ wm8900_loutmix_controls,
+ ARRAY_SIZE(wm8900_loutmix_controls)),
+SND_SOC_DAPM_MIXER("Right Output Mixer", WM8900_REG_POWER3, 2, 0,
+ wm8900_routmix_controls,
+ ARRAY_SIZE(wm8900_routmix_controls)),
+};
+
+/* Target, Path, Source */
+static const struct snd_soc_dapm_route audio_map[] = {
+/* Inputs */
+{"Left Input PGA", "LINPUT1 Switch", "LINPUT1"},
+{"Left Input PGA", "LINPUT2 Switch", "LINPUT2"},
+{"Left Input PGA", "LINPUT3 Switch", "LINPUT3"},
+
+{"Right Input PGA", "RINPUT1 Switch", "RINPUT1"},
+{"Right Input PGA", "RINPUT2 Switch", "RINPUT2"},
+{"Right Input PGA", "RINPUT3 Switch", "RINPUT3"},
+
+{"Left Input Mixer", "LINPUT2 Switch", "LINPUT2"},
+{"Left Input Mixer", "LINPUT3 Switch", "LINPUT3"},
+{"Left Input Mixer", "AUX Switch", "AUX"},
+{"Left Input Mixer", "Input PGA Switch", "Left Input PGA"},
+
+{"Right Input Mixer", "RINPUT2 Switch", "RINPUT2"},
+{"Right Input Mixer", "RINPUT3 Switch", "RINPUT3"},
+{"Right Input Mixer", "AUX Switch", "AUX"},
+{"Right Input Mixer", "Input PGA Switch", "Right Input PGA"},
+
+{"ADCL", NULL, "Left Input Mixer"},
+{"ADCR", NULL, "Right Input Mixer"},
+
+/* Outputs */
+{"LINEOUT1L", NULL, "LINEOUT1L PGA"},
+{"LINEOUT1L PGA", NULL, "Left Output Mixer"},
+{"LINEOUT1R", NULL, "LINEOUT1R PGA"},
+{"LINEOUT1R PGA", NULL, "Right Output Mixer"},
+
+{"LINEOUT2L PGA", NULL, "Left Output Mixer"},
+{"LINEOUT2 LP", "Disabled", "LINEOUT2L PGA"},
+{"LINEOUT2 LP", "Enabled", "Left Output Mixer"},
+{"LINEOUT2L", NULL, "LINEOUT2 LP"},
+
+{"LINEOUT2R PGA", NULL, "Right Output Mixer"},
+{"LINEOUT2 LP", "Disabled", "LINEOUT2R PGA"},
+{"LINEOUT2 LP", "Enabled", "Right Output Mixer"},
+{"LINEOUT2R", NULL, "LINEOUT2 LP"},
+
+{"Left Output Mixer", "LINPUT3 Bypass Switch", "LINPUT3"},
+{"Left Output Mixer", "AUX Bypass Switch", "AUX"},
+{"Left Output Mixer", "Left Input Mixer Switch", "Left Input Mixer"},
+{"Left Output Mixer", "Right Input Mixer Switch", "Right Input Mixer"},
+{"Left Output Mixer", "DACL Switch", "DACL"},
+
+{"Right Output Mixer", "RINPUT3 Bypass Switch", "RINPUT3"},
+{"Right Output Mixer", "AUX Bypass Switch", "AUX"},
+{"Right Output Mixer", "Left Input Mixer Switch", "Left Input Mixer"},
+{"Right Output Mixer", "Right Input Mixer Switch", "Right Input Mixer"},
+{"Right Output Mixer", "DACR Switch", "DACR"},
+
+/* Note that the headphone output stage needs to be connected
+ * externally to LINEOUT2 via DC blocking capacitors. Other
+ * configurations are not supported.
+ *
+ * Note also that left and right headphone paths are treated as a
+ * mono path.
+ */
+{"Headphone Amplifier", NULL, "LINEOUT2 LP"},
+{"Headphone Amplifier", NULL, "LINEOUT2 LP"},
+{"HP_L", NULL, "Headphone Amplifier"},
+{"HP_R", NULL, "Headphone Amplifier"},
+};
+
+static int wm8900_add_widgets(struct snd_soc_codec *codec)
+{
+ snd_soc_dapm_new_controls(codec, wm8900_dapm_widgets,
+ ARRAY_SIZE(wm8900_dapm_widgets));
+
+ snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+
+ snd_soc_dapm_new_widgets(codec);
+
+ return 0;
+}
+
+static int wm8900_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_device *socdev = rtd->socdev;
+ struct snd_soc_codec *codec = socdev->codec;
+ u16 reg;
+
+ reg = wm8900_read(codec, WM8900_REG_AUDIO1) & ~0x60;
+
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ break;
+ case SNDRV_PCM_FORMAT_S20_3LE:
+ reg |= 0x20;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ reg |= 0x40;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ reg |= 0x60;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ wm8900_write(codec, WM8900_REG_AUDIO1, reg);
+
+ return 0;
+}
+
+/* FLL divisors */
+struct _fll_div {
+ u16 fll_ratio;
+ u16 fllclk_div;
+ u16 fll_slow_lock_ref;
+ 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 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;
+
+ BUG_ON(!Fout);
+
+ /* The FLL must run at 90-100MHz which is then scaled down to
+ * the output value by FLLCLK_DIV. */
+ target = Fout;
+ div = 1;
+ while (target < 90000000) {
+ div *= 2;
+ target *= 2;
+ }
+
+ if (target > 100000000)
+ printk(KERN_WARNING "wm8900: FLL rate %d out of range, Fref=%d"
+ " Fout=%d\n", target, Fref, Fout);
+ if (div > 32) {
+ printk(KERN_ERR "wm8900: Invalid FLL division rate %u, "
+ "Fref=%d, Fout=%d, target=%d\n",
+ div, Fref, Fout, target);
+ return -EINVAL;
+ }
+
+ fll_div->fllclk_div = div >> 2;
+
+ if (Fref < 48000)
+ fll_div->fll_slow_lock_ref = 1;
+ else
+ fll_div->fll_slow_lock_ref = 0;
+
+ Ndiv = target / Fref;
+
+ if (Fref < 1000000)
+ fll_div->fll_ratio = 8;
+ else
+ fll_div->fll_ratio = 1;
+
+ fll_div->n = Ndiv / fll_div->fll_ratio;
+ Nmod = (target / fll_div->fll_ratio) % Fref;
+
+ /* 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;
+
+ BUG_ON(target != Fout * (fll_div->fllclk_div << 2));
+ BUG_ON(!K && target != Fref * fll_div->fll_ratio * fll_div->n);
+
+ return 0;
+}
+
+static int wm8900_set_fll(struct snd_soc_codec *codec,
+ int fll_id, unsigned int freq_in, unsigned int freq_out)
+{
+ struct wm8900_priv *wm8900 = codec->private_data;
+ struct _fll_div fll_div;
+ unsigned int reg;
+
+ if (wm8900->fll_in == freq_in && wm8900->fll_out == freq_out)
+ return 0;
+
+ /* The digital side should be disabled during any change. */
+ reg = wm8900_read(codec, WM8900_REG_POWER1);
+ wm8900_write(codec, WM8900_REG_POWER1,
+ reg & (~WM8900_REG_POWER1_FLL_ENA));
+
+ /* Disable the FLL? */
+ if (!freq_in || !freq_out) {
+ reg = wm8900_read(codec, WM8900_REG_CLOCKING1);
+ wm8900_write(codec, WM8900_REG_CLOCKING1,
+ reg & (~WM8900_REG_CLOCKING1_MCLK_SRC));
+
+ reg = wm8900_read(codec, WM8900_REG_FLLCTL1);
+ wm8900_write(codec, WM8900_REG_FLLCTL1,
+ reg & (~WM8900_REG_FLLCTL1_OSC_ENA));
+
+ wm8900->fll_in = freq_in;
+ wm8900->fll_out = freq_out;
+
+ return 0;
+ }
+
+ if (fll_factors(&fll_div, freq_in, freq_out) != 0)
+ goto reenable;
+
+ wm8900->fll_in = freq_in;
+ wm8900->fll_out = freq_out;
+
+ /* The osclilator *MUST* be enabled before we enable the
+ * digital circuit. */
+ wm8900_write(codec, WM8900_REG_FLLCTL1,
+ fll_div.fll_ratio | WM8900_REG_FLLCTL1_OSC_ENA);
+
+ wm8900_write(codec, WM8900_REG_FLLCTL4, fll_div.n >> 5);
+ wm8900_write(codec, WM8900_REG_FLLCTL5,
+ (fll_div.fllclk_div << 6) | (fll_div.n & 0x1f));
+
+ if (fll_div.k) {
+ wm8900_write(codec, WM8900_REG_FLLCTL2,
+ (fll_div.k >> 8) | 0x100);
+ wm8900_write(codec, WM8900_REG_FLLCTL3, fll_div.k & 0xff);
+ } else
+ wm8900_write(codec, WM8900_REG_FLLCTL2, 0);
+
+ if (fll_div.fll_slow_lock_ref)
+ wm8900_write(codec, WM8900_REG_FLLCTL6,
+ WM8900_REG_FLLCTL6_FLL_SLOW_LOCK_REF);
+ else
+ wm8900_write(codec, WM8900_REG_FLLCTL6, 0);
+
+ reg = wm8900_read(codec, WM8900_REG_POWER1);
+ wm8900_write(codec, WM8900_REG_POWER1,
+ reg | WM8900_REG_POWER1_FLL_ENA);
+
+reenable:
+ reg = wm8900_read(codec, WM8900_REG_CLOCKING1);
+ wm8900_write(codec, WM8900_REG_CLOCKING1,
+ reg | WM8900_REG_CLOCKING1_MCLK_SRC);
+
+ return 0;
+}
+
+static int wm8900_set_dai_pll(struct snd_soc_dai *codec_dai,
+ int pll_id, unsigned int freq_in, unsigned int freq_out)
+{
+ return wm8900_set_fll(codec_dai->codec, pll_id, freq_in, freq_out);
+}
+
+static int wm8900_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
+ int div_id, int div)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ unsigned int reg;
+
+ switch (div_id) {
+ case WM8900_BCLK_DIV:
+ reg = wm8900_read(codec, WM8900_REG_CLOCKING1);
+ wm8900_write(codec, WM8900_REG_CLOCKING1,
+ div | (reg & WM8900_REG_CLOCKING1_BCLK_MASK));
+ break;
+ case WM8900_OPCLK_DIV:
+ reg = wm8900_read(codec, WM8900_REG_CLOCKING1);
+ wm8900_write(codec, WM8900_REG_CLOCKING1,
+ div | (reg & WM8900_REG_CLOCKING1_OPCLK_MASK));
+ break;
+ case WM8900_DAC_LRCLK:
+ reg = wm8900_read(codec, WM8900_REG_AUDIO4);
+ wm8900_write(codec, WM8900_REG_AUDIO4,
+ div | (reg & WM8900_LRC_MASK));
+ break;
+ case WM8900_ADC_LRCLK:
+ reg = wm8900_read(codec, WM8900_REG_AUDIO3);
+ wm8900_write(codec, WM8900_REG_AUDIO3,
+ div | (reg & WM8900_LRC_MASK));
+ break;
+ case WM8900_DAC_CLKDIV:
+ reg = wm8900_read(codec, WM8900_REG_CLOCKING2);
+ wm8900_write(codec, WM8900_REG_CLOCKING2,
+ div | (reg & WM8900_REG_CLOCKING2_DAC_CLKDIV));
+ break;
+ case WM8900_ADC_CLKDIV:
+ reg = wm8900_read(codec, WM8900_REG_CLOCKING2);
+ wm8900_write(codec, WM8900_REG_CLOCKING2,
+ div | (reg & WM8900_REG_CLOCKING2_ADC_CLKDIV));
+ break;
+ case WM8900_LRCLK_MODE:
+ reg = wm8900_read(codec, WM8900_REG_DACCTRL);
+ wm8900_write(codec, WM8900_REG_DACCTRL,
+ div | (reg & WM8900_REG_DACCTRL_AIF_LRCLKRATE));
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+
+static int wm8900_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ unsigned int clocking1, aif1, aif3, aif4;
+
+ clocking1 = wm8900_read(codec, WM8900_REG_CLOCKING1);
+ aif1 = wm8900_read(codec, WM8900_REG_AUDIO1);
+ aif3 = wm8900_read(codec, WM8900_REG_AUDIO3);
+ aif4 = wm8900_read(codec, WM8900_REG_AUDIO4);
+
+ /* set master/slave audio interface */
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBS_CFS:
+ clocking1 &= ~WM8900_REG_CLOCKING1_BCLK_DIR;
+ aif3 &= ~WM8900_REG_AUDIO3_ADCLRC_DIR;
+ aif4 &= ~WM8900_REG_AUDIO4_DACLRC_DIR;
+ break;
+ case SND_SOC_DAIFMT_CBS_CFM:
+ clocking1 &= ~WM8900_REG_CLOCKING1_BCLK_DIR;
+ aif3 |= WM8900_REG_AUDIO3_ADCLRC_DIR;
+ aif4 |= WM8900_REG_AUDIO4_DACLRC_DIR;
+ break;
+ case SND_SOC_DAIFMT_CBM_CFM:
+ clocking1 |= WM8900_REG_CLOCKING1_BCLK_DIR;
+ aif3 |= WM8900_REG_AUDIO3_ADCLRC_DIR;
+ aif4 |= WM8900_REG_AUDIO4_DACLRC_DIR;
+ break;
+ case SND_SOC_DAIFMT_CBM_CFS:
+ clocking1 |= WM8900_REG_CLOCKING1_BCLK_DIR;
+ aif3 &= ~WM8900_REG_AUDIO3_ADCLRC_DIR;
+ aif4 &= ~WM8900_REG_AUDIO4_DACLRC_DIR;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_DSP_A:
+ aif1 |= WM8900_REG_AUDIO1_AIF_FMT_MASK;
+ aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ aif1 |= WM8900_REG_AUDIO1_AIF_FMT_MASK;
+ aif1 |= WM8900_REG_AUDIO1_LRCLK_INV;
+ break;
+ case SND_SOC_DAIFMT_I2S:
+ aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK;
+ aif1 |= 0x10;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ aif1 &= ~WM8900_REG_AUDIO1_AIF_FMT_MASK;
+ aif1 |= 0x8;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Clock inversion */
+ 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:
+ aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ aif1 |= WM8900_REG_AUDIO1_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:
+ aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV;
+ aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV;
+ break;
+ case SND_SOC_DAIFMT_IB_IF:
+ aif1 |= WM8900_REG_AUDIO1_BCLK_INV;
+ aif1 |= WM8900_REG_AUDIO1_LRCLK_INV;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ aif1 |= WM8900_REG_AUDIO1_BCLK_INV;
+ aif1 &= ~WM8900_REG_AUDIO1_LRCLK_INV;
+ break;
+ case SND_SOC_DAIFMT_NB_IF:
+ aif1 &= ~WM8900_REG_AUDIO1_BCLK_INV;
+ aif1 |= WM8900_REG_AUDIO1_LRCLK_INV;
+ break;
+ default:
+ return -EINVAL;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ wm8900_write(codec, WM8900_REG_CLOCKING1, clocking1);
+ wm8900_write(codec, WM8900_REG_AUDIO1, aif1);
+ wm8900_write(codec, WM8900_REG_AUDIO3, aif3);
+ wm8900_write(codec, WM8900_REG_AUDIO4, aif4);
+
+ return 0;
+}
+
+static int wm8900_digital_mute(struct snd_soc_dai *codec_dai, int mute)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ u16 reg;
+
+ reg = wm8900_read(codec, WM8900_REG_DACCTRL);
+
+ if (mute)
+ reg |= WM8900_REG_DACCTRL_MUTE;
+ else
+ reg &= ~WM8900_REG_DACCTRL_MUTE;
+
+ wm8900_write(codec, WM8900_REG_DACCTRL, reg);
+
+ return 0;
+}
+
+#define WM8900_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
+ SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
+ SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
+
+#define WM8900_PCM_FORMATS \
+ (SNDRV_PCM_FORMAT_S16_LE | SNDRV_PCM_FORMAT_S20_3LE | \
+ SNDRV_PCM_FORMAT_S24_LE)
+
+struct snd_soc_dai wm8900_dai = {
+ .name = "WM8900 HiFi",
+ .playback = {
+ .stream_name = "HiFi Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = WM8900_RATES,
+ .formats = WM8900_PCM_FORMATS,
+ },
+ .capture = {
+ .stream_name = "HiFi Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = WM8900_RATES,
+ .formats = WM8900_PCM_FORMATS,
+ },
+ .ops = {
+ .hw_params = wm8900_hw_params,
+ },
+ .dai_ops = {
+ .set_clkdiv = wm8900_set_dai_clkdiv,
+ .set_pll = wm8900_set_dai_pll,
+ .set_fmt = wm8900_set_dai_fmt,
+ .digital_mute = wm8900_digital_mute,
+ },
+};
+EXPORT_SYMBOL_GPL(wm8900_dai);
+
+static int wm8900_set_bias_level(struct snd_soc_codec *codec,
+ enum snd_soc_bias_level level)
+{
+ u16 reg;
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ /* Enable thermal shutdown */
+ reg = wm8900_read(codec, WM8900_REG_GPIO);
+ wm8900_write(codec, WM8900_REG_GPIO,
+ reg | WM8900_REG_GPIO_TEMP_ENA);
+ reg = wm8900_read(codec, WM8900_REG_ADDCTL);
+ wm8900_write(codec, WM8900_REG_ADDCTL,
+ reg | WM8900_REG_ADDCTL_TEMP_SD);
+ break;
+
+ case SND_SOC_BIAS_PREPARE:
+ break;
+
+ case SND_SOC_BIAS_STANDBY:
+ /* Charge capacitors if initial power up */
+ if (codec->bias_level == SND_SOC_BIAS_OFF) {
+ /* STARTUP_BIAS_ENA on */
+ wm8900_write(codec, WM8900_REG_POWER1,
+ WM8900_REG_POWER1_STARTUP_BIAS_ENA);
+
+ /* Startup bias mode */
+ wm8900_write(codec, WM8900_REG_ADDCTL,
+ WM8900_REG_ADDCTL_BIAS_SRC |
+ WM8900_REG_ADDCTL_VMID_SOFTST);
+
+ /* VMID 2x50k */
+ wm8900_write(codec, WM8900_REG_POWER1,
+ WM8900_REG_POWER1_STARTUP_BIAS_ENA | 0x1);
+
+ /* Allow capacitors to charge */
+ schedule_timeout_interruptible(msecs_to_jiffies(400));
+
+ /* Enable bias */
+ wm8900_write(codec, WM8900_REG_POWER1,
+ WM8900_REG_POWER1_STARTUP_BIAS_ENA |
+ WM8900_REG_POWER1_BIAS_ENA | 0x1);
+
+ wm8900_write(codec, WM8900_REG_ADDCTL, 0);
+
+ wm8900_write(codec, WM8900_REG_POWER1,
+ WM8900_REG_POWER1_BIAS_ENA | 0x1);
+ }
+
+ reg = wm8900_read(codec, WM8900_REG_POWER1);
+ wm8900_write(codec, WM8900_REG_POWER1,
+ (reg & WM8900_REG_POWER1_FLL_ENA) |
+ WM8900_REG_POWER1_BIAS_ENA | 0x1);
+ wm8900_write(codec, WM8900_REG_POWER2,
+ WM8900_REG_POWER2_SYSCLK_ENA);
+ wm8900_write(codec, WM8900_REG_POWER3, 0);
+ break;
+
+ case SND_SOC_BIAS_OFF:
+ /* Startup bias enable */
+ reg = wm8900_read(codec, WM8900_REG_POWER1);
+ wm8900_write(codec, WM8900_REG_POWER1,
+ reg & WM8900_REG_POWER1_STARTUP_BIAS_ENA);
+ wm8900_write(codec, WM8900_REG_ADDCTL,
+ WM8900_REG_ADDCTL_BIAS_SRC |
+ WM8900_REG_ADDCTL_VMID_SOFTST);
+
+ /* Discharge caps */
+ wm8900_write(codec, WM8900_REG_POWER1,
+ WM8900_REG_POWER1_STARTUP_BIAS_ENA);
+ schedule_timeout_interruptible(msecs_to_jiffies(500));
+
+ /* Remove clamp */
+ wm8900_write(codec, WM8900_REG_HPCTL1, 0);
+
+ /* Power down */
+ wm8900_write(codec, WM8900_REG_ADDCTL, 0);
+ wm8900_write(codec, WM8900_REG_POWER1, 0);
+ wm8900_write(codec, WM8900_REG_POWER2, 0);
+ wm8900_write(codec, WM8900_REG_POWER3, 0);
+
+ /* Need to let things settle before stopping the clock
+ * to ensure that restart works, see "Stopping the
+ * master clock" in the datasheet. */
+ schedule_timeout_interruptible(msecs_to_jiffies(1));
+ wm8900_write(codec, WM8900_REG_POWER2,
+ WM8900_REG_POWER2_SYSCLK_ENA);
+ break;
+ }
+ codec->bias_level = level;
+ return 0;
+}
+
+static int wm8900_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec = socdev->codec;
+ struct wm8900_priv *wm8900 = codec->private_data;
+ int fll_out = wm8900->fll_out;
+ int fll_in = wm8900->fll_in;
+ int ret;
+
+ /* Stop the FLL in an orderly fashion */
+ ret = wm8900_set_fll(codec, 0, 0, 0);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to stop FLL\n");
+ return ret;
+ }
+
+ wm8900->fll_out = fll_out;
+ wm8900->fll_in = fll_in;
+
+ wm8900_set_bias_level(codec, SND_SOC_BIAS_OFF);
+
+ return 0;
+}
+
+static int wm8900_resume(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec = socdev->codec;
+ struct wm8900_priv *wm8900 = codec->private_data;
+ u16 *cache;
+ int i, ret;
+
+ cache = kmemdup(codec->reg_cache, sizeof(wm8900_reg_defaults),
+ GFP_KERNEL);
+
+ wm8900_reset(codec);
+ wm8900_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+
+ /* Restart the FLL? */
+ if (wm8900->fll_out) {
+ int fll_out = wm8900->fll_out;
+ int fll_in = wm8900->fll_in;
+
+ wm8900->fll_in = 0;
+ wm8900->fll_out = 0;
+
+ ret = wm8900_set_fll(codec, 0, fll_in, fll_out);
+ if (ret != 0) {
+ dev_err(&pdev->dev, "Failed to restart FLL\n");
+ return ret;
+ }
+ }
+
+ if (cache) {
+ for (i = 0; i < WM8900_MAXREG; i++)
+ wm8900_write(codec, i, cache[i]);
+ kfree(cache);
+ } else
+ dev_err(&pdev->dev, "Unable to allocate register cache\n");
+
+ return 0;
+}
+
+/*
+ * initialise the WM8900 driver
+ * register the mixer and dsp interfaces with the kernel
+ */
+static int wm8900_init(struct snd_soc_device *socdev)
+{
+ struct snd_soc_codec *codec = socdev->codec;
+ int ret = 0;
+ unsigned int reg;
+ struct i2c_client *i2c_client = socdev->codec->control_data;
+
+ codec->name = "WM8900";
+ codec->owner = THIS_MODULE;
+ codec->read = wm8900_read;
+ codec->write = wm8900_write;
+ codec->dai = &wm8900_dai;
+ codec->num_dai = 1;
+ codec->reg_cache_size = WM8900_MAXREG;
+ codec->reg_cache = kmemdup(wm8900_reg_defaults,
+ sizeof(wm8900_reg_defaults), GFP_KERNEL);
+
+ if (codec->reg_cache == NULL)
+ return -ENOMEM;
+
+ reg = wm8900_read(codec, WM8900_REG_ID);
+ if (reg != 0x8900) {
+ dev_err(&i2c_client->dev, "Device is not a WM8900 - ID %x\n",
+ reg);
+ return -ENODEV;
+ }
+
+ codec->private_data = kzalloc(sizeof(struct wm8900_priv), GFP_KERNEL);
+ if (codec->private_data == NULL) {
+ ret = -ENOMEM;
+ goto priv_err;
+ }
+
+ /* Read back from the chip */
+ reg = wm8900_chip_read(codec, WM8900_REG_POWER1);
+ reg = (reg >> 12) & 0xf;
+ dev_info(&i2c_client->dev, "WM8900 revision %d\n", reg);
+
+ wm8900_reset(codec);
+
+ /* Latch the volume update bits */
+ wm8900_write(codec, WM8900_REG_LINVOL,
+ wm8900_read(codec, WM8900_REG_LINVOL) | 0x100);
+ wm8900_write(codec, WM8900_REG_RINVOL,
+ wm8900_read(codec, WM8900_REG_RINVOL) | 0x100);
+ wm8900_write(codec, WM8900_REG_LOUT1CTL,
+ wm8900_read(codec, WM8900_REG_LOUT1CTL) | 0x100);
+ wm8900_write(codec, WM8900_REG_ROUT1CTL,
+ wm8900_read(codec, WM8900_REG_ROUT1CTL) | 0x100);
+ wm8900_write(codec, WM8900_REG_LOUT2CTL,
+ wm8900_read(codec, WM8900_REG_LOUT2CTL) | 0x100);
+ wm8900_write(codec, WM8900_REG_ROUT2CTL,
+ wm8900_read(codec, WM8900_REG_ROUT2CTL) | 0x100);
+ wm8900_write(codec, WM8900_REG_LDAC_DV,
+ wm8900_read(codec, WM8900_REG_LDAC_DV) | 0x100);
+ wm8900_write(codec, WM8900_REG_RDAC_DV,
+ wm8900_read(codec, WM8900_REG_RDAC_DV) | 0x100);
+ wm8900_write(codec, WM8900_REG_LADC_DV,
+ wm8900_read(codec, WM8900_REG_LADC_DV) | 0x100);
+ wm8900_write(codec, WM8900_REG_RADC_DV,
+ wm8900_read(codec, WM8900_REG_RADC_DV) | 0x100);
+
+ /* Set the DAC and mixer output bias */
+ wm8900_write(codec, WM8900_REG_OUTBIASCTL, 0x81);
+
+ /* Register pcms */
+ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+ if (ret < 0) {
+ dev_err(&i2c_client->dev, "Failed to register new PCMs\n");
+ goto pcm_err;
+ }
+
+ /* Turn the chip on */
+ codec->bias_level = SND_SOC_BIAS_OFF;
+ wm8900_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+
+ wm8900_add_controls(codec);
+ wm8900_add_widgets(codec);
+
+ ret = snd_soc_register_card(socdev);
+ if (ret < 0) {
+ dev_err(&i2c_client->dev, "Failed to register card\n");
+ goto card_err;
+ }
+ return ret;
+
+card_err:
+ snd_soc_free_pcms(socdev);
+ snd_soc_dapm_free(socdev);
+pcm_err:
+ kfree(codec->reg_cache);
+priv_err:
+ kfree(codec->private_data);
+ return ret;
+}
+
+static struct snd_soc_device *wm8900_socdev;
+
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+
+static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
+
+/* Magic definition of all other variables and things */
+I2C_CLIENT_INSMOD;
+
+static struct i2c_driver wm8900_i2c_driver;
+static struct i2c_client client_template;
+
+/* If the i2c layer weren't so broken, we could pass this kind of data
+ around */
+static int wm8900_codec_probe(struct i2c_adapter *adap, int addr, int kind)
+{
+ struct snd_soc_device *socdev = wm8900_socdev;
+ struct wm8900_setup_data *setup = socdev->codec_data;
+ struct snd_soc_codec *codec = socdev->codec;
+ struct i2c_client *i2c;
+ int ret;
+
+ if (addr != setup->i2c_address)
+ return -ENODEV;
+
+ dev_err(&adap->dev, "Probe on %x\n", addr);
+
+ client_template.adapter = adap;
+ client_template.addr = addr;
+
+ i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
+ if (i2c == NULL) {
+ kfree(codec);
+ return -ENOMEM;
+ }
+ i2c_set_clientdata(i2c, codec);
+ codec->control_data = i2c;
+
+ ret = i2c_attach_client(i2c);
+ if (ret < 0) {
+ dev_err(&adap->dev,
+ "failed to attach codec at addr %x\n", addr);
+ goto err;
+ }
+
+ ret = wm8900_init(socdev);
+ if (ret < 0) {
+ dev_err(&adap->dev, "failed to initialise WM8900\n");
+ goto err;
+ }
+ return ret;
+
+err:
+ kfree(codec);
+ kfree(i2c);
+ return ret;
+}
+
+static int wm8900_i2c_detach(struct i2c_client *client)
+{
+ struct snd_soc_codec *codec = i2c_get_clientdata(client);
+ i2c_detach_client(client);
+ kfree(codec->reg_cache);
+ kfree(client);
+ return 0;
+}
+
+static int wm8900_i2c_attach(struct i2c_adapter *adap)
+{
+ return i2c_probe(adap, &addr_data, wm8900_codec_probe);
+}
+
+/* corgi i2c codec control layer */
+static struct i2c_driver wm8900_i2c_driver = {
+ .driver = {
+ .name = "WM8900 I2C codec",
+ .owner = THIS_MODULE,
+ },
+ .attach_adapter = wm8900_i2c_attach,
+ .detach_client = wm8900_i2c_detach,
+ .command = NULL,
+};
+
+static struct i2c_client client_template = {
+ .name = "WM8900",
+ .driver = &wm8900_i2c_driver,
+};
+#endif
+
+static int wm8900_probe(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct wm8900_setup_data *setup;
+ struct snd_soc_codec *codec;
+ int ret = 0;
+
+ dev_info(&pdev->dev, "WM8900 Audio Codec\n");
+
+ setup = socdev->codec_data;
+ codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
+ if (codec == NULL)
+ return -ENOMEM;
+
+ mutex_init(&codec->mutex);
+ INIT_LIST_HEAD(&codec->dapm_widgets);
+ INIT_LIST_HEAD(&codec->dapm_paths);
+
+ socdev->codec = codec;
+
+ codec->set_bias_level = wm8900_set_bias_level;
+
+ wm8900_socdev = socdev;
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+ if (setup->i2c_address) {
+ normal_i2c[0] = setup->i2c_address;
+ codec->hw_write = (hw_write_t)i2c_master_send;
+ ret = i2c_add_driver(&wm8900_i2c_driver);
+ if (ret != 0)
+ printk(KERN_ERR "can't add i2c driver");
+ }
+#else
+#error Non-I2C interfaces not yet supported
+#endif
+ return ret;
+}
+
+/* power down chip */
+static int wm8900_remove(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec = socdev->codec;
+
+ if (codec->control_data)
+ wm8900_set_bias_level(codec, SND_SOC_BIAS_OFF);
+
+ snd_soc_free_pcms(socdev);
+ snd_soc_dapm_free(socdev);
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+ i2c_del_driver(&wm8900_i2c_driver);
+#endif
+ kfree(codec);
+
+ return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_wm8900 = {
+ .probe = wm8900_probe,
+ .remove = wm8900_remove,
+ .suspend = wm8900_suspend,
+ .resume = wm8900_resume,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_wm8900);
+
+MODULE_DESCRIPTION("ASoC WM8900 driver");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfonmicro.com>");
+MODULE_LICENSE("GPL");
projects / platform / kernel / linux-arm64.git / commitdiff