167b22517SAlexander Sverdlin /* 267b22517SAlexander Sverdlin * CS4271 ASoC codec driver 367b22517SAlexander Sverdlin * 467b22517SAlexander Sverdlin * Copyright (c) 2010 Alexander Sverdlin <subaparts@yandex.ru> 567b22517SAlexander Sverdlin * 667b22517SAlexander Sverdlin * This program is free software; you can redistribute it and/or 767b22517SAlexander Sverdlin * modify it under the terms of the GNU General Public License 867b22517SAlexander Sverdlin * as published by the Free Software Foundation; either version 2 967b22517SAlexander Sverdlin * of the License, or (at your option) any later version. 1067b22517SAlexander Sverdlin * 1167b22517SAlexander Sverdlin * This program is distributed in the hope that it will be useful, 1267b22517SAlexander Sverdlin * but WITHOUT ANY WARRANTY; without even the implied warranty of 1367b22517SAlexander Sverdlin * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1467b22517SAlexander Sverdlin * GNU General Public License for more details. 1567b22517SAlexander Sverdlin * 1667b22517SAlexander Sverdlin * This driver support CS4271 codec being master or slave, working 1767b22517SAlexander Sverdlin * in control port mode, connected either via SPI or I2C. 1867b22517SAlexander Sverdlin * The data format accepted is I2S or left-justified. 1967b22517SAlexander Sverdlin * DAPM support not implemented. 2067b22517SAlexander Sverdlin */ 2167b22517SAlexander Sverdlin 2267b22517SAlexander Sverdlin #include <linux/module.h> 2367b22517SAlexander Sverdlin #include <linux/slab.h> 2467b22517SAlexander Sverdlin #include <linux/delay.h> 2567b22517SAlexander Sverdlin #include <linux/gpio.h> 2667b22517SAlexander Sverdlin #include <linux/i2c.h> 2767b22517SAlexander Sverdlin #include <linux/spi/spi.h> 28a31ebc34SDaniel Mack #include <linux/of_device.h> 29a31ebc34SDaniel Mack #include <linux/of_gpio.h> 30a31ebc34SDaniel Mack #include <sound/pcm.h> 31a31ebc34SDaniel Mack #include <sound/soc.h> 32a31ebc34SDaniel Mack #include <sound/tlv.h> 3367b22517SAlexander Sverdlin #include <sound/cs4271.h> 3467b22517SAlexander Sverdlin 3567b22517SAlexander Sverdlin #define CS4271_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ 3667b22517SAlexander Sverdlin SNDRV_PCM_FMTBIT_S24_LE | \ 3767b22517SAlexander Sverdlin SNDRV_PCM_FMTBIT_S32_LE) 38383f8465SAlexander Sverdlin #define CS4271_PCM_RATES SNDRV_PCM_RATE_8000_192000 3967b22517SAlexander Sverdlin 4067b22517SAlexander Sverdlin /* 4167b22517SAlexander Sverdlin * CS4271 registers 4267b22517SAlexander Sverdlin */ 431b1861eaSDaniel Mack #define CS4271_MODE1 0x01 /* Mode Control 1 */ 441b1861eaSDaniel Mack #define CS4271_DACCTL 0x02 /* DAC Control */ 451b1861eaSDaniel Mack #define CS4271_DACVOL 0x03 /* DAC Volume & Mixing Control */ 461b1861eaSDaniel Mack #define CS4271_VOLA 0x04 /* DAC Channel A Volume Control */ 471b1861eaSDaniel Mack #define CS4271_VOLB 0x05 /* DAC Channel B Volume Control */ 481b1861eaSDaniel Mack #define CS4271_ADCCTL 0x06 /* ADC Control */ 491b1861eaSDaniel Mack #define CS4271_MODE2 0x07 /* Mode Control 2 */ 501b1861eaSDaniel Mack #define CS4271_CHIPID 0x08 /* Chip ID */ 5167b22517SAlexander Sverdlin 5267b22517SAlexander Sverdlin #define CS4271_FIRSTREG CS4271_MODE1 5367b22517SAlexander Sverdlin #define CS4271_LASTREG CS4271_MODE2 5467b22517SAlexander Sverdlin #define CS4271_NR_REGS ((CS4271_LASTREG & 0xFF) + 1) 5567b22517SAlexander Sverdlin 5667b22517SAlexander Sverdlin /* Bit masks for the CS4271 registers */ 5767b22517SAlexander Sverdlin #define CS4271_MODE1_MODE_MASK 0xC0 5867b22517SAlexander Sverdlin #define CS4271_MODE1_MODE_1X 0x00 5967b22517SAlexander Sverdlin #define CS4271_MODE1_MODE_2X 0x80 6067b22517SAlexander Sverdlin #define CS4271_MODE1_MODE_4X 0xC0 6167b22517SAlexander Sverdlin 6267b22517SAlexander Sverdlin #define CS4271_MODE1_DIV_MASK 0x30 6367b22517SAlexander Sverdlin #define CS4271_MODE1_DIV_1 0x00 6467b22517SAlexander Sverdlin #define CS4271_MODE1_DIV_15 0x10 6567b22517SAlexander Sverdlin #define CS4271_MODE1_DIV_2 0x20 6667b22517SAlexander Sverdlin #define CS4271_MODE1_DIV_3 0x30 6767b22517SAlexander Sverdlin 6867b22517SAlexander Sverdlin #define CS4271_MODE1_MASTER 0x08 6967b22517SAlexander Sverdlin 7067b22517SAlexander Sverdlin #define CS4271_MODE1_DAC_DIF_MASK 0x07 7167b22517SAlexander Sverdlin #define CS4271_MODE1_DAC_DIF_LJ 0x00 7267b22517SAlexander Sverdlin #define CS4271_MODE1_DAC_DIF_I2S 0x01 7367b22517SAlexander Sverdlin #define CS4271_MODE1_DAC_DIF_RJ16 0x02 7467b22517SAlexander Sverdlin #define CS4271_MODE1_DAC_DIF_RJ24 0x03 7567b22517SAlexander Sverdlin #define CS4271_MODE1_DAC_DIF_RJ20 0x04 7667b22517SAlexander Sverdlin #define CS4271_MODE1_DAC_DIF_RJ18 0x05 7767b22517SAlexander Sverdlin 7867b22517SAlexander Sverdlin #define CS4271_DACCTL_AMUTE 0x80 7967b22517SAlexander Sverdlin #define CS4271_DACCTL_IF_SLOW 0x40 8067b22517SAlexander Sverdlin 8167b22517SAlexander Sverdlin #define CS4271_DACCTL_DEM_MASK 0x30 8267b22517SAlexander Sverdlin #define CS4271_DACCTL_DEM_DIS 0x00 8367b22517SAlexander Sverdlin #define CS4271_DACCTL_DEM_441 0x10 8467b22517SAlexander Sverdlin #define CS4271_DACCTL_DEM_48 0x20 8567b22517SAlexander Sverdlin #define CS4271_DACCTL_DEM_32 0x30 8667b22517SAlexander Sverdlin 8767b22517SAlexander Sverdlin #define CS4271_DACCTL_SVRU 0x08 8867b22517SAlexander Sverdlin #define CS4271_DACCTL_SRD 0x04 8967b22517SAlexander Sverdlin #define CS4271_DACCTL_INVA 0x02 9067b22517SAlexander Sverdlin #define CS4271_DACCTL_INVB 0x01 9167b22517SAlexander Sverdlin 9267b22517SAlexander Sverdlin #define CS4271_DACVOL_BEQUA 0x40 9367b22517SAlexander Sverdlin #define CS4271_DACVOL_SOFT 0x20 9467b22517SAlexander Sverdlin #define CS4271_DACVOL_ZEROC 0x10 9567b22517SAlexander Sverdlin 9667b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_MASK 0x0F 9767b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_M_M 0x00 9867b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_M_BR 0x01 9967b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_M_BL 0x02 10067b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_M_BLR2 0x03 10167b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_AR_M 0x04 10267b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_AR_BR 0x05 10367b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_AR_BL 0x06 10467b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_AR_BLR2 0x07 10567b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_AL_M 0x08 10667b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_AL_BR 0x09 10767b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_AL_BL 0x0A 10867b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_AL_BLR2 0x0B 10967b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_ALR2_M 0x0C 11067b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_ALR2_BR 0x0D 11167b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_ALR2_BL 0x0E 11267b22517SAlexander Sverdlin #define CS4271_DACVOL_ATAPI_ALR2_BLR2 0x0F 11367b22517SAlexander Sverdlin 11467b22517SAlexander Sverdlin #define CS4271_VOLA_MUTE 0x80 11567b22517SAlexander Sverdlin #define CS4271_VOLA_VOL_MASK 0x7F 11667b22517SAlexander Sverdlin #define CS4271_VOLB_MUTE 0x80 11767b22517SAlexander Sverdlin #define CS4271_VOLB_VOL_MASK 0x7F 11867b22517SAlexander Sverdlin 11967b22517SAlexander Sverdlin #define CS4271_ADCCTL_DITHER16 0x20 12067b22517SAlexander Sverdlin 12167b22517SAlexander Sverdlin #define CS4271_ADCCTL_ADC_DIF_MASK 0x10 12267b22517SAlexander Sverdlin #define CS4271_ADCCTL_ADC_DIF_LJ 0x00 12367b22517SAlexander Sverdlin #define CS4271_ADCCTL_ADC_DIF_I2S 0x10 12467b22517SAlexander Sverdlin 12567b22517SAlexander Sverdlin #define CS4271_ADCCTL_MUTEA 0x08 12667b22517SAlexander Sverdlin #define CS4271_ADCCTL_MUTEB 0x04 12767b22517SAlexander Sverdlin #define CS4271_ADCCTL_HPFDA 0x02 12867b22517SAlexander Sverdlin #define CS4271_ADCCTL_HPFDB 0x01 12967b22517SAlexander Sverdlin 13067b22517SAlexander Sverdlin #define CS4271_MODE2_LOOP 0x10 13167b22517SAlexander Sverdlin #define CS4271_MODE2_MUTECAEQUB 0x08 13267b22517SAlexander Sverdlin #define CS4271_MODE2_FREEZE 0x04 13367b22517SAlexander Sverdlin #define CS4271_MODE2_CPEN 0x02 13467b22517SAlexander Sverdlin #define CS4271_MODE2_PDN 0x01 13567b22517SAlexander Sverdlin 13667b22517SAlexander Sverdlin #define CS4271_CHIPID_PART_MASK 0xF0 13767b22517SAlexander Sverdlin #define CS4271_CHIPID_REV_MASK 0x0F 13867b22517SAlexander Sverdlin 13967b22517SAlexander Sverdlin /* 14067b22517SAlexander Sverdlin * Default CS4271 power-up configuration 14167b22517SAlexander Sverdlin * Array contains non-existing in hw register at address 0 14267b22517SAlexander Sverdlin * Array do not include Chip ID, as codec driver does not use 14367b22517SAlexander Sverdlin * registers read operations at all 14467b22517SAlexander Sverdlin */ 1451b1861eaSDaniel Mack static const struct reg_default cs4271_reg_defaults[] = { 1461b1861eaSDaniel Mack { CS4271_MODE1, 0, }, 1471b1861eaSDaniel Mack { CS4271_DACCTL, CS4271_DACCTL_AMUTE, }, 1481b1861eaSDaniel Mack { CS4271_DACVOL, CS4271_DACVOL_SOFT | CS4271_DACVOL_ATAPI_AL_BR, }, 1491b1861eaSDaniel Mack { CS4271_VOLA, 0, }, 1501b1861eaSDaniel Mack { CS4271_VOLB, 0, }, 1511b1861eaSDaniel Mack { CS4271_ADCCTL, 0, }, 1521b1861eaSDaniel Mack { CS4271_MODE2, 0, }, 15367b22517SAlexander Sverdlin }; 15467b22517SAlexander Sverdlin 1551b1861eaSDaniel Mack static bool cs4271_volatile_reg(struct device *dev, unsigned int reg) 1561b1861eaSDaniel Mack { 1571b1861eaSDaniel Mack return reg == CS4271_CHIPID; 1581b1861eaSDaniel Mack } 1591b1861eaSDaniel Mack 16067b22517SAlexander Sverdlin struct cs4271_private { 16167b22517SAlexander Sverdlin /* SND_SOC_I2C or SND_SOC_SPI */ 16267b22517SAlexander Sverdlin unsigned int mclk; 16367b22517SAlexander Sverdlin bool master; 16467b22517SAlexander Sverdlin bool deemph; 1651b1861eaSDaniel Mack struct regmap *regmap; 16667b22517SAlexander Sverdlin /* Current sample rate for de-emphasis control */ 16767b22517SAlexander Sverdlin int rate; 16867b22517SAlexander Sverdlin /* GPIO driving Reset pin, if any */ 16967b22517SAlexander Sverdlin int gpio_nreset; 17067b22517SAlexander Sverdlin /* GPIO that disable serial bus, if any */ 17167b22517SAlexander Sverdlin int gpio_disable; 172fd23fb9fSDaniel Mack /* enable soft reset workaround */ 173fd23fb9fSDaniel Mack bool enable_soft_reset; 17467b22517SAlexander Sverdlin }; 17567b22517SAlexander Sverdlin 17667b22517SAlexander Sverdlin /* 17767b22517SAlexander Sverdlin * @freq is the desired MCLK rate 17867b22517SAlexander Sverdlin * MCLK rate should (c) be the sample rate, multiplied by one of the 17967b22517SAlexander Sverdlin * ratios listed in cs4271_mclk_fs_ratios table 18067b22517SAlexander Sverdlin */ 18167b22517SAlexander Sverdlin static int cs4271_set_dai_sysclk(struct snd_soc_dai *codec_dai, 18267b22517SAlexander Sverdlin int clk_id, unsigned int freq, int dir) 18367b22517SAlexander Sverdlin { 18467b22517SAlexander Sverdlin struct snd_soc_codec *codec = codec_dai->codec; 18567b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 18667b22517SAlexander Sverdlin 18767b22517SAlexander Sverdlin cs4271->mclk = freq; 18867b22517SAlexander Sverdlin return 0; 18967b22517SAlexander Sverdlin } 19067b22517SAlexander Sverdlin 19167b22517SAlexander Sverdlin static int cs4271_set_dai_fmt(struct snd_soc_dai *codec_dai, 19267b22517SAlexander Sverdlin unsigned int format) 19367b22517SAlexander Sverdlin { 19467b22517SAlexander Sverdlin struct snd_soc_codec *codec = codec_dai->codec; 19567b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 19667b22517SAlexander Sverdlin unsigned int val = 0; 1970d42e6e7SAlexander Sverdlin int ret; 19867b22517SAlexander Sverdlin 19967b22517SAlexander Sverdlin switch (format & SND_SOC_DAIFMT_MASTER_MASK) { 20067b22517SAlexander Sverdlin case SND_SOC_DAIFMT_CBS_CFS: 20167b22517SAlexander Sverdlin cs4271->master = 0; 20267b22517SAlexander Sverdlin break; 20367b22517SAlexander Sverdlin case SND_SOC_DAIFMT_CBM_CFM: 20467b22517SAlexander Sverdlin cs4271->master = 1; 20567b22517SAlexander Sverdlin val |= CS4271_MODE1_MASTER; 20667b22517SAlexander Sverdlin break; 20767b22517SAlexander Sverdlin default: 20867b22517SAlexander Sverdlin dev_err(codec->dev, "Invalid DAI format\n"); 20967b22517SAlexander Sverdlin return -EINVAL; 21067b22517SAlexander Sverdlin } 21167b22517SAlexander Sverdlin 21267b22517SAlexander Sverdlin switch (format & SND_SOC_DAIFMT_FORMAT_MASK) { 21367b22517SAlexander Sverdlin case SND_SOC_DAIFMT_LEFT_J: 21467b22517SAlexander Sverdlin val |= CS4271_MODE1_DAC_DIF_LJ; 2151b1861eaSDaniel Mack ret = regmap_update_bits(cs4271->regmap, CS4271_ADCCTL, 21667b22517SAlexander Sverdlin CS4271_ADCCTL_ADC_DIF_MASK, CS4271_ADCCTL_ADC_DIF_LJ); 2170d42e6e7SAlexander Sverdlin if (ret < 0) 2180d42e6e7SAlexander Sverdlin return ret; 21967b22517SAlexander Sverdlin break; 22067b22517SAlexander Sverdlin case SND_SOC_DAIFMT_I2S: 22167b22517SAlexander Sverdlin val |= CS4271_MODE1_DAC_DIF_I2S; 2221b1861eaSDaniel Mack ret = regmap_update_bits(cs4271->regmap, CS4271_ADCCTL, 22367b22517SAlexander Sverdlin CS4271_ADCCTL_ADC_DIF_MASK, CS4271_ADCCTL_ADC_DIF_I2S); 2240d42e6e7SAlexander Sverdlin if (ret < 0) 2250d42e6e7SAlexander Sverdlin return ret; 22667b22517SAlexander Sverdlin break; 22767b22517SAlexander Sverdlin default: 22867b22517SAlexander Sverdlin dev_err(codec->dev, "Invalid DAI format\n"); 22967b22517SAlexander Sverdlin return -EINVAL; 23067b22517SAlexander Sverdlin } 23167b22517SAlexander Sverdlin 2321b1861eaSDaniel Mack ret = regmap_update_bits(cs4271->regmap, CS4271_MODE1, 23367b22517SAlexander Sverdlin CS4271_MODE1_DAC_DIF_MASK | CS4271_MODE1_MASTER, val); 2340d42e6e7SAlexander Sverdlin if (ret < 0) 2350d42e6e7SAlexander Sverdlin return ret; 23667b22517SAlexander Sverdlin return 0; 23767b22517SAlexander Sverdlin } 23867b22517SAlexander Sverdlin 23967b22517SAlexander Sverdlin static int cs4271_deemph[] = {0, 44100, 48000, 32000}; 24067b22517SAlexander Sverdlin 24167b22517SAlexander Sverdlin static int cs4271_set_deemph(struct snd_soc_codec *codec) 24267b22517SAlexander Sverdlin { 24367b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 2440d42e6e7SAlexander Sverdlin int i, ret; 24567b22517SAlexander Sverdlin int val = CS4271_DACCTL_DEM_DIS; 24667b22517SAlexander Sverdlin 24767b22517SAlexander Sverdlin if (cs4271->deemph) { 24867b22517SAlexander Sverdlin /* Find closest de-emphasis freq */ 24967b22517SAlexander Sverdlin val = 1; 25067b22517SAlexander Sverdlin for (i = 2; i < ARRAY_SIZE(cs4271_deemph); i++) 25167b22517SAlexander Sverdlin if (abs(cs4271_deemph[i] - cs4271->rate) < 25267b22517SAlexander Sverdlin abs(cs4271_deemph[val] - cs4271->rate)) 25367b22517SAlexander Sverdlin val = i; 25467b22517SAlexander Sverdlin val <<= 4; 25567b22517SAlexander Sverdlin } 25667b22517SAlexander Sverdlin 2571b1861eaSDaniel Mack ret = regmap_update_bits(cs4271->regmap, CS4271_DACCTL, 25867b22517SAlexander Sverdlin CS4271_DACCTL_DEM_MASK, val); 2590d42e6e7SAlexander Sverdlin if (ret < 0) 2600d42e6e7SAlexander Sverdlin return ret; 2610d42e6e7SAlexander Sverdlin return 0; 26267b22517SAlexander Sverdlin } 26367b22517SAlexander Sverdlin 26467b22517SAlexander Sverdlin static int cs4271_get_deemph(struct snd_kcontrol *kcontrol, 26567b22517SAlexander Sverdlin struct snd_ctl_elem_value *ucontrol) 26667b22517SAlexander Sverdlin { 26767b22517SAlexander Sverdlin struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 26867b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 26967b22517SAlexander Sverdlin 27067b22517SAlexander Sverdlin ucontrol->value.enumerated.item[0] = cs4271->deemph; 27167b22517SAlexander Sverdlin return 0; 27267b22517SAlexander Sverdlin } 27367b22517SAlexander Sverdlin 27467b22517SAlexander Sverdlin static int cs4271_put_deemph(struct snd_kcontrol *kcontrol, 27567b22517SAlexander Sverdlin struct snd_ctl_elem_value *ucontrol) 27667b22517SAlexander Sverdlin { 27767b22517SAlexander Sverdlin struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 27867b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 27967b22517SAlexander Sverdlin 28067b22517SAlexander Sverdlin cs4271->deemph = ucontrol->value.enumerated.item[0]; 28167b22517SAlexander Sverdlin return cs4271_set_deemph(codec); 28267b22517SAlexander Sverdlin } 28367b22517SAlexander Sverdlin 2845c3a12e9SAlexander Sverdlin struct cs4271_clk_cfg { 2855c3a12e9SAlexander Sverdlin bool master; /* codec mode */ 2865c3a12e9SAlexander Sverdlin u8 speed_mode; /* codec speed mode: 1x, 2x, 4x */ 2875c3a12e9SAlexander Sverdlin unsigned short ratio; /* MCLK / sample rate */ 2885c3a12e9SAlexander Sverdlin u8 ratio_mask; /* ratio bit mask for Master mode */ 2895c3a12e9SAlexander Sverdlin }; 2905c3a12e9SAlexander Sverdlin 2915c3a12e9SAlexander Sverdlin static struct cs4271_clk_cfg cs4271_clk_tab[] = { 2925c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_1X, 256, CS4271_MODE1_DIV_1}, 2935c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_1X, 384, CS4271_MODE1_DIV_15}, 2945c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_1X, 512, CS4271_MODE1_DIV_2}, 2955c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_1X, 768, CS4271_MODE1_DIV_3}, 2965c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_2X, 128, CS4271_MODE1_DIV_1}, 2975c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_2X, 192, CS4271_MODE1_DIV_15}, 2985c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_2X, 256, CS4271_MODE1_DIV_2}, 2995c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_2X, 384, CS4271_MODE1_DIV_3}, 3005c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_4X, 64, CS4271_MODE1_DIV_1}, 3015c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_4X, 96, CS4271_MODE1_DIV_15}, 3025c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_4X, 128, CS4271_MODE1_DIV_2}, 3035c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_4X, 192, CS4271_MODE1_DIV_3}, 3045c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_1X, 256, CS4271_MODE1_DIV_1}, 3055c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_1X, 384, CS4271_MODE1_DIV_1}, 3065c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_1X, 512, CS4271_MODE1_DIV_1}, 3075c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_1X, 768, CS4271_MODE1_DIV_2}, 3085c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_1X, 1024, CS4271_MODE1_DIV_2}, 3095c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_2X, 128, CS4271_MODE1_DIV_1}, 3105c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_2X, 192, CS4271_MODE1_DIV_1}, 3115c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_2X, 256, CS4271_MODE1_DIV_1}, 3125c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_2X, 384, CS4271_MODE1_DIV_2}, 3135c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_2X, 512, CS4271_MODE1_DIV_2}, 3145c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_4X, 64, CS4271_MODE1_DIV_1}, 3155c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_4X, 96, CS4271_MODE1_DIV_1}, 3165c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_4X, 128, CS4271_MODE1_DIV_1}, 3175c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_4X, 192, CS4271_MODE1_DIV_2}, 3185c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_4X, 256, CS4271_MODE1_DIV_2}, 3195c3a12e9SAlexander Sverdlin }; 3205c3a12e9SAlexander Sverdlin 3215c3a12e9SAlexander Sverdlin #define CS4171_NR_RATIOS ARRAY_SIZE(cs4271_clk_tab) 3225c3a12e9SAlexander Sverdlin 32367b22517SAlexander Sverdlin static int cs4271_hw_params(struct snd_pcm_substream *substream, 32467b22517SAlexander Sverdlin struct snd_pcm_hw_params *params, 32567b22517SAlexander Sverdlin struct snd_soc_dai *dai) 32667b22517SAlexander Sverdlin { 327e6968a17SMark Brown struct snd_soc_codec *codec = dai->codec; 32867b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 3290d42e6e7SAlexander Sverdlin int i, ret; 3300d42e6e7SAlexander Sverdlin unsigned int ratio, val; 33167b22517SAlexander Sverdlin 332fd23fb9fSDaniel Mack if (cs4271->enable_soft_reset) { 333fd23fb9fSDaniel Mack /* 334fd23fb9fSDaniel Mack * Put the codec in soft reset and back again in case it's not 335fd23fb9fSDaniel Mack * currently streaming data. This way of bringing the codec in 336fd23fb9fSDaniel Mack * sync to the current clocks is not explicitly documented in 337fd23fb9fSDaniel Mack * the data sheet, but it seems to work fine, and in contrast 338fd23fb9fSDaniel Mack * to a read hardware reset, we don't have to sync back all 339fd23fb9fSDaniel Mack * registers every time. 340fd23fb9fSDaniel Mack */ 341fd23fb9fSDaniel Mack 342fd23fb9fSDaniel Mack if ((substream->stream == SNDRV_PCM_STREAM_PLAYBACK && 343fd23fb9fSDaniel Mack !dai->capture_active) || 344fd23fb9fSDaniel Mack (substream->stream == SNDRV_PCM_STREAM_CAPTURE && 345fd23fb9fSDaniel Mack !dai->playback_active)) { 3461b1861eaSDaniel Mack ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2, 347fd23fb9fSDaniel Mack CS4271_MODE2_PDN, 348fd23fb9fSDaniel Mack CS4271_MODE2_PDN); 349fd23fb9fSDaniel Mack if (ret < 0) 350fd23fb9fSDaniel Mack return ret; 351fd23fb9fSDaniel Mack 3521b1861eaSDaniel Mack ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2, 353fd23fb9fSDaniel Mack CS4271_MODE2_PDN, 0); 354fd23fb9fSDaniel Mack if (ret < 0) 355fd23fb9fSDaniel Mack return ret; 356fd23fb9fSDaniel Mack } 357fd23fb9fSDaniel Mack } 358fd23fb9fSDaniel Mack 35967b22517SAlexander Sverdlin cs4271->rate = params_rate(params); 3605c3a12e9SAlexander Sverdlin 3615c3a12e9SAlexander Sverdlin /* Configure DAC */ 3625c3a12e9SAlexander Sverdlin if (cs4271->rate < 50000) 3635c3a12e9SAlexander Sverdlin val = CS4271_MODE1_MODE_1X; 3645c3a12e9SAlexander Sverdlin else if (cs4271->rate < 100000) 3655c3a12e9SAlexander Sverdlin val = CS4271_MODE1_MODE_2X; 3665c3a12e9SAlexander Sverdlin else 3675c3a12e9SAlexander Sverdlin val = CS4271_MODE1_MODE_4X; 3685c3a12e9SAlexander Sverdlin 36967b22517SAlexander Sverdlin ratio = cs4271->mclk / cs4271->rate; 37067b22517SAlexander Sverdlin for (i = 0; i < CS4171_NR_RATIOS; i++) 3715c3a12e9SAlexander Sverdlin if ((cs4271_clk_tab[i].master == cs4271->master) && 3725c3a12e9SAlexander Sverdlin (cs4271_clk_tab[i].speed_mode == val) && 3735c3a12e9SAlexander Sverdlin (cs4271_clk_tab[i].ratio == ratio)) 37467b22517SAlexander Sverdlin break; 37567b22517SAlexander Sverdlin 3765c3a12e9SAlexander Sverdlin if (i == CS4171_NR_RATIOS) { 37767b22517SAlexander Sverdlin dev_err(codec->dev, "Invalid sample rate\n"); 37867b22517SAlexander Sverdlin return -EINVAL; 37967b22517SAlexander Sverdlin } 38067b22517SAlexander Sverdlin 3815c3a12e9SAlexander Sverdlin val |= cs4271_clk_tab[i].ratio_mask; 38267b22517SAlexander Sverdlin 3831b1861eaSDaniel Mack ret = regmap_update_bits(cs4271->regmap, CS4271_MODE1, 38467b22517SAlexander Sverdlin CS4271_MODE1_MODE_MASK | CS4271_MODE1_DIV_MASK, val); 3850d42e6e7SAlexander Sverdlin if (ret < 0) 3860d42e6e7SAlexander Sverdlin return ret; 38767b22517SAlexander Sverdlin 38867b22517SAlexander Sverdlin return cs4271_set_deemph(codec); 38967b22517SAlexander Sverdlin } 39067b22517SAlexander Sverdlin 39167b22517SAlexander Sverdlin static int cs4271_digital_mute(struct snd_soc_dai *dai, int mute) 39267b22517SAlexander Sverdlin { 39367b22517SAlexander Sverdlin struct snd_soc_codec *codec = dai->codec; 3941b1861eaSDaniel Mack struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 3950d42e6e7SAlexander Sverdlin int ret; 39667b22517SAlexander Sverdlin int val_a = 0; 39767b22517SAlexander Sverdlin int val_b = 0; 39867b22517SAlexander Sverdlin 39967b22517SAlexander Sverdlin if (mute) { 40067b22517SAlexander Sverdlin val_a = CS4271_VOLA_MUTE; 40167b22517SAlexander Sverdlin val_b = CS4271_VOLB_MUTE; 40267b22517SAlexander Sverdlin } 40367b22517SAlexander Sverdlin 4041b1861eaSDaniel Mack ret = regmap_update_bits(cs4271->regmap, CS4271_VOLA, 4051b1861eaSDaniel Mack CS4271_VOLA_MUTE, val_a); 4060d42e6e7SAlexander Sverdlin if (ret < 0) 4070d42e6e7SAlexander Sverdlin return ret; 4081b1861eaSDaniel Mack 4091b1861eaSDaniel Mack ret = regmap_update_bits(cs4271->regmap, CS4271_VOLB, 4101b1861eaSDaniel Mack CS4271_VOLB_MUTE, val_b); 4110d42e6e7SAlexander Sverdlin if (ret < 0) 4120d42e6e7SAlexander Sverdlin return ret; 41367b22517SAlexander Sverdlin 41467b22517SAlexander Sverdlin return 0; 41567b22517SAlexander Sverdlin } 41667b22517SAlexander Sverdlin 41767b22517SAlexander Sverdlin /* CS4271 controls */ 41867b22517SAlexander Sverdlin static DECLARE_TLV_DB_SCALE(cs4271_dac_tlv, -12700, 100, 0); 41967b22517SAlexander Sverdlin 42067b22517SAlexander Sverdlin static const struct snd_kcontrol_new cs4271_snd_controls[] = { 42167b22517SAlexander Sverdlin SOC_DOUBLE_R_TLV("Master Playback Volume", CS4271_VOLA, CS4271_VOLB, 42267b22517SAlexander Sverdlin 0, 0x7F, 1, cs4271_dac_tlv), 42367b22517SAlexander Sverdlin SOC_SINGLE("Digital Loopback Switch", CS4271_MODE2, 4, 1, 0), 42467b22517SAlexander Sverdlin SOC_SINGLE("Soft Ramp Switch", CS4271_DACVOL, 5, 1, 0), 42567b22517SAlexander Sverdlin SOC_SINGLE("Zero Cross Switch", CS4271_DACVOL, 4, 1, 0), 42667b22517SAlexander Sverdlin SOC_SINGLE_BOOL_EXT("De-emphasis Switch", 0, 42767b22517SAlexander Sverdlin cs4271_get_deemph, cs4271_put_deemph), 42867b22517SAlexander Sverdlin SOC_SINGLE("Auto-Mute Switch", CS4271_DACCTL, 7, 1, 0), 42967b22517SAlexander Sverdlin SOC_SINGLE("Slow Roll Off Filter Switch", CS4271_DACCTL, 6, 1, 0), 43067b22517SAlexander Sverdlin SOC_SINGLE("Soft Volume Ramp-Up Switch", CS4271_DACCTL, 3, 1, 0), 43167b22517SAlexander Sverdlin SOC_SINGLE("Soft Ramp-Down Switch", CS4271_DACCTL, 2, 1, 0), 43267b22517SAlexander Sverdlin SOC_SINGLE("Left Channel Inversion Switch", CS4271_DACCTL, 1, 1, 0), 43367b22517SAlexander Sverdlin SOC_SINGLE("Right Channel Inversion Switch", CS4271_DACCTL, 0, 1, 0), 43467b22517SAlexander Sverdlin SOC_DOUBLE("Master Capture Switch", CS4271_ADCCTL, 3, 2, 1, 1), 43567b22517SAlexander Sverdlin SOC_SINGLE("Dither 16-Bit Data Switch", CS4271_ADCCTL, 5, 1, 0), 43667b22517SAlexander Sverdlin SOC_DOUBLE("High Pass Filter Switch", CS4271_ADCCTL, 1, 0, 1, 1), 43767b22517SAlexander Sverdlin SOC_DOUBLE_R("Master Playback Switch", CS4271_VOLA, CS4271_VOLB, 43867b22517SAlexander Sverdlin 7, 1, 1), 43967b22517SAlexander Sverdlin }; 44067b22517SAlexander Sverdlin 44185e7652dSLars-Peter Clausen static const struct snd_soc_dai_ops cs4271_dai_ops = { 44267b22517SAlexander Sverdlin .hw_params = cs4271_hw_params, 44367b22517SAlexander Sverdlin .set_sysclk = cs4271_set_dai_sysclk, 44467b22517SAlexander Sverdlin .set_fmt = cs4271_set_dai_fmt, 44567b22517SAlexander Sverdlin .digital_mute = cs4271_digital_mute, 44667b22517SAlexander Sverdlin }; 44767b22517SAlexander Sverdlin 44816af7d60SMark Brown static struct snd_soc_dai_driver cs4271_dai = { 44967b22517SAlexander Sverdlin .name = "cs4271-hifi", 45067b22517SAlexander Sverdlin .playback = { 45167b22517SAlexander Sverdlin .stream_name = "Playback", 45267b22517SAlexander Sverdlin .channels_min = 2, 45367b22517SAlexander Sverdlin .channels_max = 2, 454383f8465SAlexander Sverdlin .rates = CS4271_PCM_RATES, 45567b22517SAlexander Sverdlin .formats = CS4271_PCM_FORMATS, 45667b22517SAlexander Sverdlin }, 45767b22517SAlexander Sverdlin .capture = { 45867b22517SAlexander Sverdlin .stream_name = "Capture", 45967b22517SAlexander Sverdlin .channels_min = 2, 46067b22517SAlexander Sverdlin .channels_max = 2, 461383f8465SAlexander Sverdlin .rates = CS4271_PCM_RATES, 46267b22517SAlexander Sverdlin .formats = CS4271_PCM_FORMATS, 46367b22517SAlexander Sverdlin }, 46467b22517SAlexander Sverdlin .ops = &cs4271_dai_ops, 46567b22517SAlexander Sverdlin .symmetric_rates = 1, 46667b22517SAlexander Sverdlin }; 46767b22517SAlexander Sverdlin 46867b22517SAlexander Sverdlin #ifdef CONFIG_PM 46984b315eeSLars-Peter Clausen static int cs4271_soc_suspend(struct snd_soc_codec *codec) 47067b22517SAlexander Sverdlin { 4710d42e6e7SAlexander Sverdlin int ret; 4721b1861eaSDaniel Mack struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 4731b1861eaSDaniel Mack 47467b22517SAlexander Sverdlin /* Set power-down bit */ 4751b1861eaSDaniel Mack ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2, 4761b1861eaSDaniel Mack CS4271_MODE2_PDN, CS4271_MODE2_PDN); 4770d42e6e7SAlexander Sverdlin if (ret < 0) 4780d42e6e7SAlexander Sverdlin return ret; 4791b1861eaSDaniel Mack 48067b22517SAlexander Sverdlin return 0; 48167b22517SAlexander Sverdlin } 48267b22517SAlexander Sverdlin 48367b22517SAlexander Sverdlin static int cs4271_soc_resume(struct snd_soc_codec *codec) 48467b22517SAlexander Sverdlin { 4850d42e6e7SAlexander Sverdlin int ret; 4861b1861eaSDaniel Mack struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 4871b1861eaSDaniel Mack 48867b22517SAlexander Sverdlin /* Restore codec state */ 4891b1861eaSDaniel Mack ret = regcache_sync(cs4271->regmap); 4900d42e6e7SAlexander Sverdlin if (ret < 0) 4910d42e6e7SAlexander Sverdlin return ret; 4921b1861eaSDaniel Mack 49367b22517SAlexander Sverdlin /* then disable the power-down bit */ 4941b1861eaSDaniel Mack ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2, 4951b1861eaSDaniel Mack CS4271_MODE2_PDN, 0); 4960d42e6e7SAlexander Sverdlin if (ret < 0) 4970d42e6e7SAlexander Sverdlin return ret; 4981b1861eaSDaniel Mack 49967b22517SAlexander Sverdlin return 0; 50067b22517SAlexander Sverdlin } 50167b22517SAlexander Sverdlin #else 50267b22517SAlexander Sverdlin #define cs4271_soc_suspend NULL 50367b22517SAlexander Sverdlin #define cs4271_soc_resume NULL 50467b22517SAlexander Sverdlin #endif /* CONFIG_PM */ 50567b22517SAlexander Sverdlin 506a31ebc34SDaniel Mack #ifdef CONFIG_OF 507a31ebc34SDaniel Mack static const struct of_device_id cs4271_dt_ids[] = { 508a31ebc34SDaniel Mack { .compatible = "cirrus,cs4271", }, 509a31ebc34SDaniel Mack { } 510a31ebc34SDaniel Mack }; 511a31ebc34SDaniel Mack MODULE_DEVICE_TABLE(of, cs4271_dt_ids); 512a31ebc34SDaniel Mack #endif 513a31ebc34SDaniel Mack 51467b22517SAlexander Sverdlin static int cs4271_probe(struct snd_soc_codec *codec) 51567b22517SAlexander Sverdlin { 51667b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 51767b22517SAlexander Sverdlin struct cs4271_platform_data *cs4271plat = codec->dev->platform_data; 51867b22517SAlexander Sverdlin int ret; 51967b22517SAlexander Sverdlin int gpio_nreset = -EINVAL; 52026047e2dSDaniel Mack bool amutec_eq_bmutec = false; 52167b22517SAlexander Sverdlin 522a31ebc34SDaniel Mack #ifdef CONFIG_OF 523293750f9SDaniel Mack if (of_match_device(cs4271_dt_ids, codec->dev)) { 524a31ebc34SDaniel Mack gpio_nreset = of_get_named_gpio(codec->dev->of_node, 525a31ebc34SDaniel Mack "reset-gpio", 0); 526293750f9SDaniel Mack 527b8455c9fSDaniel Mack if (of_get_property(codec->dev->of_node, 528293750f9SDaniel Mack "cirrus,amutec-eq-bmutec", NULL)) 52926047e2dSDaniel Mack amutec_eq_bmutec = true; 530fd23fb9fSDaniel Mack 531fd23fb9fSDaniel Mack if (of_get_property(codec->dev->of_node, 532fd23fb9fSDaniel Mack "cirrus,enable-soft-reset", NULL)) 533fd23fb9fSDaniel Mack cs4271->enable_soft_reset = true; 534293750f9SDaniel Mack } 535a31ebc34SDaniel Mack #endif 536a31ebc34SDaniel Mack 537293750f9SDaniel Mack if (cs4271plat) { 538293750f9SDaniel Mack if (gpio_is_valid(cs4271plat->gpio_nreset)) 53967b22517SAlexander Sverdlin gpio_nreset = cs4271plat->gpio_nreset; 54067b22517SAlexander Sverdlin 541293750f9SDaniel Mack amutec_eq_bmutec = cs4271plat->amutec_eq_bmutec; 542fd23fb9fSDaniel Mack cs4271->enable_soft_reset = cs4271plat->enable_soft_reset; 543293750f9SDaniel Mack } 544293750f9SDaniel Mack 54567b22517SAlexander Sverdlin if (gpio_nreset >= 0) 5465574f774SDaniel Mack if (devm_gpio_request(codec->dev, gpio_nreset, "CS4271 Reset")) 54767b22517SAlexander Sverdlin gpio_nreset = -EINVAL; 54867b22517SAlexander Sverdlin if (gpio_nreset >= 0) { 54967b22517SAlexander Sverdlin /* Reset codec */ 55067b22517SAlexander Sverdlin gpio_direction_output(gpio_nreset, 0); 55167b22517SAlexander Sverdlin udelay(1); 55267b22517SAlexander Sverdlin gpio_set_value(gpio_nreset, 1); 55367b22517SAlexander Sverdlin /* Give the codec time to wake up */ 55467b22517SAlexander Sverdlin udelay(1); 55567b22517SAlexander Sverdlin } 55667b22517SAlexander Sverdlin 55767b22517SAlexander Sverdlin cs4271->gpio_nreset = gpio_nreset; 55867b22517SAlexander Sverdlin 5591b1861eaSDaniel Mack ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2, 560ef0cd470SAxel Lin CS4271_MODE2_PDN | CS4271_MODE2_CPEN, 56167b22517SAlexander Sverdlin CS4271_MODE2_PDN | CS4271_MODE2_CPEN); 5620d42e6e7SAlexander Sverdlin if (ret < 0) 5630d42e6e7SAlexander Sverdlin return ret; 5641b1861eaSDaniel Mack ret = regmap_update_bits(cs4271->regmap, CS4271_MODE2, 5651b1861eaSDaniel Mack CS4271_MODE2_PDN, 0); 5660d42e6e7SAlexander Sverdlin if (ret < 0) 5670d42e6e7SAlexander Sverdlin return ret; 56867b22517SAlexander Sverdlin /* Power-up sequence requires 85 uS */ 56967b22517SAlexander Sverdlin udelay(85); 57067b22517SAlexander Sverdlin 571293750f9SDaniel Mack if (amutec_eq_bmutec) 5721b1861eaSDaniel Mack regmap_update_bits(cs4271->regmap, CS4271_MODE2, 573293750f9SDaniel Mack CS4271_MODE2_MUTECAEQUB, 574293750f9SDaniel Mack CS4271_MODE2_MUTECAEQUB); 575293750f9SDaniel Mack 576022658beSLiam Girdwood return snd_soc_add_codec_controls(codec, cs4271_snd_controls, 57767b22517SAlexander Sverdlin ARRAY_SIZE(cs4271_snd_controls)); 57867b22517SAlexander Sverdlin } 57967b22517SAlexander Sverdlin 58067b22517SAlexander Sverdlin static int cs4271_remove(struct snd_soc_codec *codec) 58167b22517SAlexander Sverdlin { 58267b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 58367b22517SAlexander Sverdlin 5845574f774SDaniel Mack if (gpio_is_valid(cs4271->gpio_nreset)) 58567b22517SAlexander Sverdlin /* Set codec to the reset state */ 5865574f774SDaniel Mack gpio_set_value(cs4271->gpio_nreset, 0); 58767b22517SAlexander Sverdlin 58867b22517SAlexander Sverdlin return 0; 58967b22517SAlexander Sverdlin }; 59067b22517SAlexander Sverdlin 59116af7d60SMark Brown static struct snd_soc_codec_driver soc_codec_dev_cs4271 = { 59267b22517SAlexander Sverdlin .probe = cs4271_probe, 59367b22517SAlexander Sverdlin .remove = cs4271_remove, 59467b22517SAlexander Sverdlin .suspend = cs4271_soc_suspend, 59567b22517SAlexander Sverdlin .resume = cs4271_soc_resume, 59667b22517SAlexander Sverdlin }; 59767b22517SAlexander Sverdlin 59867b22517SAlexander Sverdlin #if defined(CONFIG_SPI_MASTER) 5991b1861eaSDaniel Mack 6001b1861eaSDaniel Mack static const struct regmap_config cs4271_spi_regmap = { 6011b1861eaSDaniel Mack .reg_bits = 16, 6021b1861eaSDaniel Mack .val_bits = 8, 6031b1861eaSDaniel Mack .max_register = CS4271_LASTREG, 6041b1861eaSDaniel Mack .read_flag_mask = 0x21, 6051b1861eaSDaniel Mack .write_flag_mask = 0x20, 6061b1861eaSDaniel Mack 6071b1861eaSDaniel Mack .reg_defaults = cs4271_reg_defaults, 6081b1861eaSDaniel Mack .num_reg_defaults = ARRAY_SIZE(cs4271_reg_defaults), 6091b1861eaSDaniel Mack .cache_type = REGCACHE_RBTREE, 6101b1861eaSDaniel Mack 6111b1861eaSDaniel Mack .volatile_reg = cs4271_volatile_reg, 6121b1861eaSDaniel Mack }; 6131b1861eaSDaniel Mack 6147a79e94eSBill Pemberton static int cs4271_spi_probe(struct spi_device *spi) 61567b22517SAlexander Sverdlin { 61667b22517SAlexander Sverdlin struct cs4271_private *cs4271; 61767b22517SAlexander Sverdlin 61867b22517SAlexander Sverdlin cs4271 = devm_kzalloc(&spi->dev, sizeof(*cs4271), GFP_KERNEL); 61967b22517SAlexander Sverdlin if (!cs4271) 62067b22517SAlexander Sverdlin return -ENOMEM; 62167b22517SAlexander Sverdlin 62267b22517SAlexander Sverdlin spi_set_drvdata(spi, cs4271); 6231b1861eaSDaniel Mack cs4271->regmap = devm_regmap_init_spi(spi, &cs4271_spi_regmap); 6241b1861eaSDaniel Mack if (IS_ERR(cs4271->regmap)) 6251b1861eaSDaniel Mack return PTR_ERR(cs4271->regmap); 62667b22517SAlexander Sverdlin 62767b22517SAlexander Sverdlin return snd_soc_register_codec(&spi->dev, &soc_codec_dev_cs4271, 62867b22517SAlexander Sverdlin &cs4271_dai, 1); 62967b22517SAlexander Sverdlin } 63067b22517SAlexander Sverdlin 6317a79e94eSBill Pemberton static int cs4271_spi_remove(struct spi_device *spi) 63267b22517SAlexander Sverdlin { 63367b22517SAlexander Sverdlin snd_soc_unregister_codec(&spi->dev); 63467b22517SAlexander Sverdlin return 0; 63567b22517SAlexander Sverdlin } 63667b22517SAlexander Sverdlin 63767b22517SAlexander Sverdlin static struct spi_driver cs4271_spi_driver = { 63867b22517SAlexander Sverdlin .driver = { 63967b22517SAlexander Sverdlin .name = "cs4271", 64067b22517SAlexander Sverdlin .owner = THIS_MODULE, 641a31ebc34SDaniel Mack .of_match_table = of_match_ptr(cs4271_dt_ids), 64267b22517SAlexander Sverdlin }, 64367b22517SAlexander Sverdlin .probe = cs4271_spi_probe, 6447a79e94eSBill Pemberton .remove = cs4271_spi_remove, 64567b22517SAlexander Sverdlin }; 64667b22517SAlexander Sverdlin #endif /* defined(CONFIG_SPI_MASTER) */ 64767b22517SAlexander Sverdlin 64867b22517SAlexander Sverdlin #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 64979a54ea1SAxel Lin static const struct i2c_device_id cs4271_i2c_id[] = { 65067b22517SAlexander Sverdlin {"cs4271", 0}, 65167b22517SAlexander Sverdlin {} 65267b22517SAlexander Sverdlin }; 65367b22517SAlexander Sverdlin MODULE_DEVICE_TABLE(i2c, cs4271_i2c_id); 65467b22517SAlexander Sverdlin 6551b1861eaSDaniel Mack static const struct regmap_config cs4271_i2c_regmap = { 6561b1861eaSDaniel Mack .reg_bits = 8, 6571b1861eaSDaniel Mack .val_bits = 8, 6581b1861eaSDaniel Mack .max_register = CS4271_LASTREG, 6591b1861eaSDaniel Mack 6601b1861eaSDaniel Mack .reg_defaults = cs4271_reg_defaults, 6611b1861eaSDaniel Mack .num_reg_defaults = ARRAY_SIZE(cs4271_reg_defaults), 6621b1861eaSDaniel Mack .cache_type = REGCACHE_RBTREE, 6631b1861eaSDaniel Mack 6641b1861eaSDaniel Mack .volatile_reg = cs4271_volatile_reg, 6651b1861eaSDaniel Mack }; 6661b1861eaSDaniel Mack 6677a79e94eSBill Pemberton static int cs4271_i2c_probe(struct i2c_client *client, 66867b22517SAlexander Sverdlin const struct i2c_device_id *id) 66967b22517SAlexander Sverdlin { 67067b22517SAlexander Sverdlin struct cs4271_private *cs4271; 67167b22517SAlexander Sverdlin 67267b22517SAlexander Sverdlin cs4271 = devm_kzalloc(&client->dev, sizeof(*cs4271), GFP_KERNEL); 67367b22517SAlexander Sverdlin if (!cs4271) 67467b22517SAlexander Sverdlin return -ENOMEM; 67567b22517SAlexander Sverdlin 67667b22517SAlexander Sverdlin i2c_set_clientdata(client, cs4271); 6771b1861eaSDaniel Mack cs4271->regmap = devm_regmap_init_i2c(client, &cs4271_i2c_regmap); 6781b1861eaSDaniel Mack if (IS_ERR(cs4271->regmap)) 6791b1861eaSDaniel Mack return PTR_ERR(cs4271->regmap); 68067b22517SAlexander Sverdlin 68167b22517SAlexander Sverdlin return snd_soc_register_codec(&client->dev, &soc_codec_dev_cs4271, 68267b22517SAlexander Sverdlin &cs4271_dai, 1); 68367b22517SAlexander Sverdlin } 68467b22517SAlexander Sverdlin 6857a79e94eSBill Pemberton static int cs4271_i2c_remove(struct i2c_client *client) 68667b22517SAlexander Sverdlin { 68767b22517SAlexander Sverdlin snd_soc_unregister_codec(&client->dev); 68867b22517SAlexander Sverdlin return 0; 68967b22517SAlexander Sverdlin } 69067b22517SAlexander Sverdlin 69167b22517SAlexander Sverdlin static struct i2c_driver cs4271_i2c_driver = { 69267b22517SAlexander Sverdlin .driver = { 69367b22517SAlexander Sverdlin .name = "cs4271", 69467b22517SAlexander Sverdlin .owner = THIS_MODULE, 695a31ebc34SDaniel Mack .of_match_table = of_match_ptr(cs4271_dt_ids), 69667b22517SAlexander Sverdlin }, 69767b22517SAlexander Sverdlin .id_table = cs4271_i2c_id, 69867b22517SAlexander Sverdlin .probe = cs4271_i2c_probe, 6997a79e94eSBill Pemberton .remove = cs4271_i2c_remove, 70067b22517SAlexander Sverdlin }; 70167b22517SAlexander Sverdlin #endif /* defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) */ 70267b22517SAlexander Sverdlin 70367b22517SAlexander Sverdlin /* 70467b22517SAlexander Sverdlin * We only register our serial bus driver here without 70567b22517SAlexander Sverdlin * assignment to particular chip. So if any of the below 70667b22517SAlexander Sverdlin * fails, there is some problem with I2C or SPI subsystem. 70767b22517SAlexander Sverdlin * In most cases this module will be compiled with support 70867b22517SAlexander Sverdlin * of only one serial bus. 70967b22517SAlexander Sverdlin */ 71067b22517SAlexander Sverdlin static int __init cs4271_modinit(void) 71167b22517SAlexander Sverdlin { 71267b22517SAlexander Sverdlin int ret; 71367b22517SAlexander Sverdlin 71467b22517SAlexander Sverdlin #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 71567b22517SAlexander Sverdlin ret = i2c_add_driver(&cs4271_i2c_driver); 71667b22517SAlexander Sverdlin if (ret) { 71767b22517SAlexander Sverdlin pr_err("Failed to register CS4271 I2C driver: %d\n", ret); 71867b22517SAlexander Sverdlin return ret; 71967b22517SAlexander Sverdlin } 72067b22517SAlexander Sverdlin #endif 72167b22517SAlexander Sverdlin 72267b22517SAlexander Sverdlin #if defined(CONFIG_SPI_MASTER) 72367b22517SAlexander Sverdlin ret = spi_register_driver(&cs4271_spi_driver); 72467b22517SAlexander Sverdlin if (ret) { 72567b22517SAlexander Sverdlin pr_err("Failed to register CS4271 SPI driver: %d\n", ret); 72667b22517SAlexander Sverdlin return ret; 72767b22517SAlexander Sverdlin } 72867b22517SAlexander Sverdlin #endif 72967b22517SAlexander Sverdlin 73067b22517SAlexander Sverdlin return 0; 73167b22517SAlexander Sverdlin } 73267b22517SAlexander Sverdlin module_init(cs4271_modinit); 73367b22517SAlexander Sverdlin 73467b22517SAlexander Sverdlin static void __exit cs4271_modexit(void) 73567b22517SAlexander Sverdlin { 73667b22517SAlexander Sverdlin #if defined(CONFIG_SPI_MASTER) 73767b22517SAlexander Sverdlin spi_unregister_driver(&cs4271_spi_driver); 73867b22517SAlexander Sverdlin #endif 73967b22517SAlexander Sverdlin 74067b22517SAlexander Sverdlin #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 74167b22517SAlexander Sverdlin i2c_del_driver(&cs4271_i2c_driver); 74267b22517SAlexander Sverdlin #endif 74367b22517SAlexander Sverdlin } 74467b22517SAlexander Sverdlin module_exit(cs4271_modexit); 74567b22517SAlexander Sverdlin 74667b22517SAlexander Sverdlin MODULE_AUTHOR("Alexander Sverdlin <subaparts@yandex.ru>"); 74767b22517SAlexander Sverdlin MODULE_DESCRIPTION("Cirrus Logic CS4271 ALSA SoC Codec Driver"); 74867b22517SAlexander Sverdlin MODULE_LICENSE("GPL"); 749