// SPDX-License-Identifier: GPL-2.0-only /* * wm8900.c -- WM8900 ALSA Soc Audio driver * * Copyright 2007, 2008 Wolfson Microelectronics PLC. * * Author: Mark Brown * * TODO: * - Tristating. * - TDM. * - Jack detect. * - FLL source configuration, currently only MCLK is supported. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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_DAC_SB_FILT 0x100 #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 0x03ff struct wm8900_priv { struct regmap *regmap; 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 struct reg_default wm8900_reg_defaults[] = { { 1, 0x0000 }, { 2, 0xc000 }, { 3, 0x0000 }, { 4, 0x4050 }, { 5, 0x4000 }, { 6, 0x0008 }, { 7, 0x0000 }, { 8, 0x0040 }, { 9, 0x0040 }, { 10, 0x1004 }, { 11, 0x00c0 }, { 12, 0x00c0 }, { 13, 0x0000 }, { 14, 0x0100 }, { 15, 0x00c0 }, { 16, 0x00c0 }, { 17, 0x0000 }, { 18, 0xb001 }, { 19, 0x0000 }, { 20, 0x0000 }, { 21, 0x0044 }, { 22, 0x004c }, { 23, 0x004c }, { 24, 0x0044 }, { 25, 0x0044 }, { 26, 0x0000 }, { 27, 0x0044 }, { 28, 0x0000 }, { 29, 0x0000 }, { 30, 0x0002 }, { 31, 0x0000 }, { 32, 0x0000 }, { 33, 0x0000 }, { 34, 0x0000 }, { 35, 0x0000 }, { 36, 0x0008 }, { 37, 0x0000 }, { 38, 0x0000 }, { 39, 0x0008 }, { 40, 0x0097 }, { 41, 0x0100 }, { 42, 0x0000 }, { 43, 0x0000 }, { 44, 0x0050 }, { 45, 0x0050 }, { 46, 0x0055 }, { 47, 0x0055 }, { 48, 0x0055 }, { 49, 0x0000 }, { 50, 0x0000 }, { 51, 0x0079 }, { 52, 0x0079 }, { 53, 0x0079 }, { 54, 0x0079 }, { 55, 0x0000 }, }; static bool wm8900_volatile_register(struct device *dev, unsigned int reg) { switch (reg) { case WM8900_REG_ID: return true; default: return false; } } static void wm8900_reset(struct snd_soc_component *component) { snd_soc_component_write(component, WM8900_REG_RESET, 0); } static int wm8900_hp_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); u16 hpctl1 = snd_soc_component_read(component, 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; snd_soc_component_write(component, 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; snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1); msleep(400); /* Enable the output stage */ hpctl1 &= ~WM8900_REG_HPCTL1_HP_CLAMP_OP; hpctl1 |= WM8900_REG_HPCTL1_HP_OPSTAGE_ENA; snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1); /* Remove the shorts */ hpctl1 &= ~WM8900_REG_HPCTL1_HP_SHORT2; snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1); hpctl1 &= ~WM8900_REG_HPCTL1_HP_SHORT; snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1); break; case SND_SOC_DAPM_PRE_PMD: /* Short the output */ hpctl1 |= WM8900_REG_HPCTL1_HP_SHORT; snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1); /* Disable the output stage */ hpctl1 &= ~WM8900_REG_HPCTL1_HP_OPSTAGE_ENA; snd_soc_component_write(component, 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; snd_soc_component_write(component, WM8900_REG_HPCTL1, hpctl1); break; case SND_SOC_DAPM_POST_PMD: /* Disable everything */ snd_soc_component_write(component, WM8900_REG_HPCTL1, 0); break; default: WARN(1, "Invalid event %d\n", event); break; } 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 SOC_ENUM_SINGLE_DECL(mic_bias_level, WM8900_REG_INCTL, 8, mic_bias_level_txt); static const char *dac_mute_rate_txt[] = { "Fast", "Slow" }; static SOC_ENUM_SINGLE_DECL(dac_mute_rate, WM8900_REG_DACCTRL, 7, dac_mute_rate_txt); static const char *dac_deemphasis_txt[] = { "Disabled", "32kHz", "44.1kHz", "48kHz" }; static SOC_ENUM_SINGLE_DECL(dac_deemphasis, WM8900_REG_DACCTRL, 4, dac_deemphasis_txt); static const char *adc_hpf_cut_txt[] = { "Hi-fi mode", "Voice mode 1", "Voice mode 2", "Voice mode 3" }; static SOC_ENUM_SINGLE_DECL(adc_hpf_cut, WM8900_REG_ADCCTRL, 5, adc_hpf_cut_txt); static const char *lr_txt[] = { "Left", "Right" }; static SOC_ENUM_SINGLE_DECL(aifl_src, WM8900_REG_AUDIO1, 15, lr_txt); static SOC_ENUM_SINGLE_DECL(aifr_src, WM8900_REG_AUDIO1, 14, lr_txt); static SOC_ENUM_SINGLE_DECL(dacl_src, WM8900_REG_AUDIO2, 15, lr_txt); static SOC_ENUM_SINGLE_DECL(dacr_src, WM8900_REG_AUDIO2, 14, lr_txt); static const char *sidetone_txt[] = { "Disabled", "Left ADC", "Right ADC" }; static SOC_ENUM_SINGLE_DECL(dacl_sidetone, WM8900_REG_SIDETONE, 2, sidetone_txt); static SOC_ENUM_SINGLE_DECL(dacr_sidetone, WM8900_REG_SIDETONE, 0, 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 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), }; 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 *wm8900_lp_mux[] = { "Disabled", "Enabled" }; static SOC_ENUM_SINGLE_DECL(wm8900_lineout2_lp_mux, WM8900_REG_LOUTMIXCTL1, 1, wm8900_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_SUPPLY("Mic Bias", WM8900_REG_POWER1, 4, 0, NULL, 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 wm8900_dapm_routes[] = { /* 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_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_component *component = dai->component; u16 reg; reg = snd_soc_component_read(component, WM8900_REG_AUDIO1) & ~0x60; switch (params_width(params)) { case 16: break; case 20: reg |= 0x20; break; case 24: reg |= 0x40; break; case 32: reg |= 0x60; break; default: return -EINVAL; } snd_soc_component_write(component, WM8900_REG_AUDIO1, reg); if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { reg = snd_soc_component_read(component, WM8900_REG_DACCTRL); if (params_rate(params) <= 24000) reg |= WM8900_REG_DACCTRL_DAC_SB_FILT; else reg &= ~WM8900_REG_DACCTRL_DAC_SB_FILT; snd_soc_component_write(component, WM8900_REG_DACCTRL, 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; if (WARN_ON(!Fout)) return -EINVAL; /* 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 %u out of range, Fref=%u" " Fout=%u\n", target, Fref, Fout); if (div > 32) { printk(KERN_ERR "wm8900: Invalid FLL division rate %u, " "Fref=%u, Fout=%u, target=%u\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; if (WARN_ON(target != Fout * (fll_div->fllclk_div << 2)) || WARN_ON(!K && target != Fref * fll_div->fll_ratio * fll_div->n)) return -EINVAL; return 0; } static int wm8900_set_fll(struct snd_soc_component *component, int fll_id, unsigned int freq_in, unsigned int freq_out) { struct wm8900_priv *wm8900 = snd_soc_component_get_drvdata(component); struct _fll_div fll_div; if (wm8900->fll_in == freq_in && wm8900->fll_out == freq_out) return 0; /* The digital side should be disabled during any change. */ snd_soc_component_update_bits(component, WM8900_REG_POWER1, WM8900_REG_POWER1_FLL_ENA, 0); /* Disable the FLL? */ if (!freq_in || !freq_out) { snd_soc_component_update_bits(component, WM8900_REG_CLOCKING1, WM8900_REG_CLOCKING1_MCLK_SRC, 0); snd_soc_component_update_bits(component, WM8900_REG_FLLCTL1, WM8900_REG_FLLCTL1_OSC_ENA, 0); 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. */ snd_soc_component_write(component, WM8900_REG_FLLCTL1, fll_div.fll_ratio | WM8900_REG_FLLCTL1_OSC_ENA); snd_soc_component_write(component, WM8900_REG_FLLCTL4, fll_div.n >> 5); snd_soc_component_write(component, WM8900_REG_FLLCTL5, (fll_div.fllclk_div << 6) | (fll_div.n & 0x1f)); if (fll_div.k) { snd_soc_component_write(component, WM8900_REG_FLLCTL2, (fll_div.k >> 8) | 0x100); snd_soc_component_write(component, WM8900_REG_FLLCTL3, fll_div.k & 0xff); } else snd_soc_component_write(component, WM8900_REG_FLLCTL2, 0); if (fll_div.fll_slow_lock_ref) snd_soc_component_write(component, WM8900_REG_FLLCTL6, WM8900_REG_FLLCTL6_FLL_SLOW_LOCK_REF); else snd_soc_component_write(component, WM8900_REG_FLLCTL6, 0); snd_soc_component_update_bits(component, WM8900_REG_POWER1, WM8900_REG_POWER1_FLL_ENA, WM8900_REG_POWER1_FLL_ENA); reenable: snd_soc_component_update_bits(component, WM8900_REG_CLOCKING1, WM8900_REG_CLOCKING1_MCLK_SRC, WM8900_REG_CLOCKING1_MCLK_SRC); return 0; } static int wm8900_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, int source, unsigned int freq_in, unsigned int freq_out) { return wm8900_set_fll(codec_dai->component, 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_component *component = codec_dai->component; switch (div_id) { case WM8900_BCLK_DIV: snd_soc_component_update_bits(component, WM8900_REG_CLOCKING1, WM8900_REG_CLOCKING1_BCLK_MASK, div); break; case WM8900_OPCLK_DIV: snd_soc_component_update_bits(component, WM8900_REG_CLOCKING1, WM8900_REG_CLOCKING1_OPCLK_MASK, div); break; case WM8900_DAC_LRCLK: snd_soc_component_update_bits(component, WM8900_REG_AUDIO4, WM8900_LRC_MASK, div); break; case WM8900_ADC_LRCLK: snd_soc_component_update_bits(component, WM8900_REG_AUDIO3, WM8900_LRC_MASK, div); break; case WM8900_DAC_CLKDIV: snd_soc_component_update_bits(component, WM8900_REG_CLOCKING2, WM8900_REG_CLOCKING2_DAC_CLKDIV, div); break; case WM8900_ADC_CLKDIV: snd_soc_component_update_bits(component, WM8900_REG_CLOCKING2, WM8900_REG_CLOCKING2_ADC_CLKDIV, div); break; case WM8900_LRCLK_MODE: snd_soc_component_update_bits(component, WM8900_REG_DACCTRL, WM8900_REG_DACCTRL_AIF_LRCLKRATE, div); break; default: return -EINVAL; } return 0; } static int wm8900_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) { struct snd_soc_component *component = codec_dai->component; unsigned int clocking1, aif1, aif3, aif4; clocking1 = snd_soc_component_read(component, WM8900_REG_CLOCKING1); aif1 = snd_soc_component_read(component, WM8900_REG_AUDIO1); aif3 = snd_soc_component_read(component, WM8900_REG_AUDIO3); aif4 = snd_soc_component_read(component, 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; } snd_soc_component_write(component, WM8900_REG_CLOCKING1, clocking1); snd_soc_component_write(component, WM8900_REG_AUDIO1, aif1); snd_soc_component_write(component, WM8900_REG_AUDIO3, aif3); snd_soc_component_write(component, WM8900_REG_AUDIO4, aif4); return 0; } static int wm8900_digital_mute(struct snd_soc_dai *codec_dai, int mute) { struct snd_soc_component *component = codec_dai->component; u16 reg; reg = snd_soc_component_read(component, WM8900_REG_DACCTRL); if (mute) reg |= WM8900_REG_DACCTRL_MUTE; else reg &= ~WM8900_REG_DACCTRL_MUTE; snd_soc_component_write(component, 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_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \ SNDRV_PCM_FMTBIT_S24_LE) static const struct snd_soc_dai_ops wm8900_dai_ops = { .hw_params = wm8900_hw_params, .set_clkdiv = wm8900_set_dai_clkdiv, .set_pll = wm8900_set_dai_pll, .set_fmt = wm8900_set_dai_fmt, .digital_mute = wm8900_digital_mute, }; static struct snd_soc_dai_driver 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 = &wm8900_dai_ops, }; static int wm8900_set_bias_level(struct snd_soc_component *component, enum snd_soc_bias_level level) { u16 reg; switch (level) { case SND_SOC_BIAS_ON: /* Enable thermal shutdown */ snd_soc_component_update_bits(component, WM8900_REG_GPIO, WM8900_REG_GPIO_TEMP_ENA, WM8900_REG_GPIO_TEMP_ENA); snd_soc_component_update_bits(component, WM8900_REG_ADDCTL, WM8900_REG_ADDCTL_TEMP_SD, WM8900_REG_ADDCTL_TEMP_SD); break; case SND_SOC_BIAS_PREPARE: break; case SND_SOC_BIAS_STANDBY: /* Charge capacitors if initial power up */ if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) { /* STARTUP_BIAS_ENA on */ snd_soc_component_write(component, WM8900_REG_POWER1, WM8900_REG_POWER1_STARTUP_BIAS_ENA); /* Startup bias mode */ snd_soc_component_write(component, WM8900_REG_ADDCTL, WM8900_REG_ADDCTL_BIAS_SRC | WM8900_REG_ADDCTL_VMID_SOFTST); /* VMID 2x50k */ snd_soc_component_write(component, WM8900_REG_POWER1, WM8900_REG_POWER1_STARTUP_BIAS_ENA | 0x1); /* Allow capacitors to charge */ schedule_timeout_interruptible(msecs_to_jiffies(400)); /* Enable bias */ snd_soc_component_write(component, WM8900_REG_POWER1, WM8900_REG_POWER1_STARTUP_BIAS_ENA | WM8900_REG_POWER1_BIAS_ENA | 0x1); snd_soc_component_write(component, WM8900_REG_ADDCTL, 0); snd_soc_component_write(component, WM8900_REG_POWER1, WM8900_REG_POWER1_BIAS_ENA | 0x1); } reg = snd_soc_component_read(component, WM8900_REG_POWER1); snd_soc_component_write(component, WM8900_REG_POWER1, (reg & WM8900_REG_POWER1_FLL_ENA) | WM8900_REG_POWER1_BIAS_ENA | 0x1); snd_soc_component_write(component, WM8900_REG_POWER2, WM8900_REG_POWER2_SYSCLK_ENA); snd_soc_component_write(component, WM8900_REG_POWER3, 0); break; case SND_SOC_BIAS_OFF: /* Startup bias enable */ reg = snd_soc_component_read(component, WM8900_REG_POWER1); snd_soc_component_write(component, WM8900_REG_POWER1, reg & WM8900_REG_POWER1_STARTUP_BIAS_ENA); snd_soc_component_write(component, WM8900_REG_ADDCTL, WM8900_REG_ADDCTL_BIAS_SRC | WM8900_REG_ADDCTL_VMID_SOFTST); /* Discharge caps */ snd_soc_component_write(component, WM8900_REG_POWER1, WM8900_REG_POWER1_STARTUP_BIAS_ENA); schedule_timeout_interruptible(msecs_to_jiffies(500)); /* Remove clamp */ snd_soc_component_write(component, WM8900_REG_HPCTL1, 0); /* Power down */ snd_soc_component_write(component, WM8900_REG_ADDCTL, 0); snd_soc_component_write(component, WM8900_REG_POWER1, 0); snd_soc_component_write(component, WM8900_REG_POWER2, 0); snd_soc_component_write(component, 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)); snd_soc_component_write(component, WM8900_REG_POWER2, WM8900_REG_POWER2_SYSCLK_ENA); break; } return 0; } static int wm8900_suspend(struct snd_soc_component *component) { struct wm8900_priv *wm8900 = snd_soc_component_get_drvdata(component); 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(component, 0, 0, 0); if (ret != 0) { dev_err(component->dev, "Failed to stop FLL\n"); return ret; } wm8900->fll_out = fll_out; wm8900->fll_in = fll_in; snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF); return 0; } static int wm8900_resume(struct snd_soc_component *component) { struct wm8900_priv *wm8900 = snd_soc_component_get_drvdata(component); int ret; wm8900_reset(component); ret = regcache_sync(wm8900->regmap); if (ret != 0) { dev_err(component->dev, "Failed to restore cache: %d\n", ret); return ret; } snd_soc_component_force_bias_level(component, 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(component, 0, fll_in, fll_out); if (ret != 0) { dev_err(component->dev, "Failed to restart FLL\n"); return ret; } } return 0; } static int wm8900_probe(struct snd_soc_component *component) { int reg; reg = snd_soc_component_read(component, WM8900_REG_ID); if (reg != 0x8900) { dev_err(component->dev, "Device is not a WM8900 - ID %x\n", reg); return -ENODEV; } wm8900_reset(component); /* Turn the chip on */ snd_soc_component_force_bias_level(component, SND_SOC_BIAS_STANDBY); /* Latch the volume update bits */ snd_soc_component_update_bits(component, WM8900_REG_LINVOL, 0x100, 0x100); snd_soc_component_update_bits(component, WM8900_REG_RINVOL, 0x100, 0x100); snd_soc_component_update_bits(component, WM8900_REG_LOUT1CTL, 0x100, 0x100); snd_soc_component_update_bits(component, WM8900_REG_ROUT1CTL, 0x100, 0x100); snd_soc_component_update_bits(component, WM8900_REG_LOUT2CTL, 0x100, 0x100); snd_soc_component_update_bits(component, WM8900_REG_ROUT2CTL, 0x100, 0x100); snd_soc_component_update_bits(component, WM8900_REG_LDAC_DV, 0x100, 0x100); snd_soc_component_update_bits(component, WM8900_REG_RDAC_DV, 0x100, 0x100); snd_soc_component_update_bits(component, WM8900_REG_LADC_DV, 0x100, 0x100); snd_soc_component_update_bits(component, WM8900_REG_RADC_DV, 0x100, 0x100); /* Set the DAC and mixer output bias */ snd_soc_component_write(component, WM8900_REG_OUTBIASCTL, 0x81); return 0; } static const struct snd_soc_component_driver soc_component_dev_wm8900 = { .probe = wm8900_probe, .suspend = wm8900_suspend, .resume = wm8900_resume, .set_bias_level = wm8900_set_bias_level, .controls = wm8900_snd_controls, .num_controls = ARRAY_SIZE(wm8900_snd_controls), .dapm_widgets = wm8900_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(wm8900_dapm_widgets), .dapm_routes = wm8900_dapm_routes, .num_dapm_routes = ARRAY_SIZE(wm8900_dapm_routes), .idle_bias_on = 1, .use_pmdown_time = 1, .endianness = 1, .non_legacy_dai_naming = 1, }; static const struct regmap_config wm8900_regmap = { .reg_bits = 8, .val_bits = 16, .max_register = WM8900_MAXREG, .reg_defaults = wm8900_reg_defaults, .num_reg_defaults = ARRAY_SIZE(wm8900_reg_defaults), .cache_type = REGCACHE_RBTREE, .volatile_reg = wm8900_volatile_register, }; #if defined(CONFIG_SPI_MASTER) static int wm8900_spi_probe(struct spi_device *spi) { struct wm8900_priv *wm8900; int ret; wm8900 = devm_kzalloc(&spi->dev, sizeof(struct wm8900_priv), GFP_KERNEL); if (wm8900 == NULL) return -ENOMEM; wm8900->regmap = devm_regmap_init_spi(spi, &wm8900_regmap); if (IS_ERR(wm8900->regmap)) return PTR_ERR(wm8900->regmap); spi_set_drvdata(spi, wm8900); ret = devm_snd_soc_register_component(&spi->dev, &soc_component_dev_wm8900, &wm8900_dai, 1); return ret; } static int wm8900_spi_remove(struct spi_device *spi) { return 0; } static struct spi_driver wm8900_spi_driver = { .driver = { .name = "wm8900", }, .probe = wm8900_spi_probe, .remove = wm8900_spi_remove, }; #endif /* CONFIG_SPI_MASTER */ #if IS_ENABLED(CONFIG_I2C) static int wm8900_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct wm8900_priv *wm8900; int ret; wm8900 = devm_kzalloc(&i2c->dev, sizeof(struct wm8900_priv), GFP_KERNEL); if (wm8900 == NULL) return -ENOMEM; wm8900->regmap = devm_regmap_init_i2c(i2c, &wm8900_regmap); if (IS_ERR(wm8900->regmap)) return PTR_ERR(wm8900->regmap); i2c_set_clientdata(i2c, wm8900); ret = devm_snd_soc_register_component(&i2c->dev, &soc_component_dev_wm8900, &wm8900_dai, 1); return ret; } static int wm8900_i2c_remove(struct i2c_client *client) { return 0; } static const struct i2c_device_id wm8900_i2c_id[] = { { "wm8900", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, wm8900_i2c_id); static struct i2c_driver wm8900_i2c_driver = { .driver = { .name = "wm8900", }, .probe = wm8900_i2c_probe, .remove = wm8900_i2c_remove, .id_table = wm8900_i2c_id, }; #endif static int __init wm8900_modinit(void) { int ret = 0; #if IS_ENABLED(CONFIG_I2C) ret = i2c_add_driver(&wm8900_i2c_driver); if (ret != 0) { printk(KERN_ERR "Failed to register wm8900 I2C driver: %d\n", ret); } #endif #if defined(CONFIG_SPI_MASTER) ret = spi_register_driver(&wm8900_spi_driver); if (ret != 0) { printk(KERN_ERR "Failed to register wm8900 SPI driver: %d\n", ret); } #endif return ret; } module_init(wm8900_modinit); static void __exit wm8900_exit(void) { #if IS_ENABLED(CONFIG_I2C) i2c_del_driver(&wm8900_i2c_driver); #endif #if defined(CONFIG_SPI_MASTER) spi_unregister_driver(&wm8900_spi_driver); #endif } module_exit(wm8900_exit); MODULE_DESCRIPTION("ASoC WM8900 driver"); MODULE_AUTHOR("Mark Brown "); MODULE_LICENSE("GPL");