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 <sound/pcm.h> 2667b22517SAlexander Sverdlin #include <sound/soc.h> 2767b22517SAlexander Sverdlin #include <sound/tlv.h> 2867b22517SAlexander Sverdlin #include <linux/gpio.h> 2967b22517SAlexander Sverdlin #include <linux/i2c.h> 3067b22517SAlexander Sverdlin #include <linux/spi/spi.h> 3167b22517SAlexander Sverdlin #include <sound/cs4271.h> 3267b22517SAlexander Sverdlin 3367b22517SAlexander Sverdlin #define CS4271_PCM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \ 3467b22517SAlexander Sverdlin SNDRV_PCM_FMTBIT_S24_LE | \ 3567b22517SAlexander Sverdlin SNDRV_PCM_FMTBIT_S32_LE) 36383f8465SAlexander Sverdlin #define CS4271_PCM_RATES SNDRV_PCM_RATE_8000_192000 3767b22517SAlexander Sverdlin 3867b22517SAlexander Sverdlin /* 3967b22517SAlexander Sverdlin * CS4271 registers 4067b22517SAlexander Sverdlin * High byte represents SPI chip address (0x10) + write command (0) 4167b22517SAlexander Sverdlin * Low byte - codec register address 4267b22517SAlexander Sverdlin */ 4367b22517SAlexander Sverdlin #define CS4271_MODE1 0x2001 /* Mode Control 1 */ 4467b22517SAlexander Sverdlin #define CS4271_DACCTL 0x2002 /* DAC Control */ 4567b22517SAlexander Sverdlin #define CS4271_DACVOL 0x2003 /* DAC Volume & Mixing Control */ 4667b22517SAlexander Sverdlin #define CS4271_VOLA 0x2004 /* DAC Channel A Volume Control */ 4767b22517SAlexander Sverdlin #define CS4271_VOLB 0x2005 /* DAC Channel B Volume Control */ 4867b22517SAlexander Sverdlin #define CS4271_ADCCTL 0x2006 /* ADC Control */ 4967b22517SAlexander Sverdlin #define CS4271_MODE2 0x2007 /* Mode Control 2 */ 5067b22517SAlexander Sverdlin #define CS4271_CHIPID 0x2008 /* 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 */ 14567b22517SAlexander Sverdlin static const u8 cs4271_dflt_reg[CS4271_NR_REGS] = { 14667b22517SAlexander Sverdlin 0, 14767b22517SAlexander Sverdlin 0, 14867b22517SAlexander Sverdlin CS4271_DACCTL_AMUTE, 14967b22517SAlexander Sverdlin CS4271_DACVOL_SOFT | CS4271_DACVOL_ATAPI_AL_BR, 15067b22517SAlexander Sverdlin 0, 15167b22517SAlexander Sverdlin 0, 15267b22517SAlexander Sverdlin 0, 15367b22517SAlexander Sverdlin 0, 15467b22517SAlexander Sverdlin }; 15567b22517SAlexander Sverdlin 15667b22517SAlexander Sverdlin struct cs4271_private { 15767b22517SAlexander Sverdlin /* SND_SOC_I2C or SND_SOC_SPI */ 15867b22517SAlexander Sverdlin enum snd_soc_control_type bus_type; 15967b22517SAlexander Sverdlin void *control_data; 16067b22517SAlexander Sverdlin unsigned int mclk; 16167b22517SAlexander Sverdlin bool master; 16267b22517SAlexander Sverdlin bool deemph; 16367b22517SAlexander Sverdlin /* Current sample rate for de-emphasis control */ 16467b22517SAlexander Sverdlin int rate; 16567b22517SAlexander Sverdlin /* GPIO driving Reset pin, if any */ 16667b22517SAlexander Sverdlin int gpio_nreset; 16767b22517SAlexander Sverdlin /* GPIO that disable serial bus, if any */ 16867b22517SAlexander Sverdlin int gpio_disable; 16967b22517SAlexander Sverdlin }; 17067b22517SAlexander Sverdlin 17167b22517SAlexander Sverdlin /* 17267b22517SAlexander Sverdlin * @freq is the desired MCLK rate 17367b22517SAlexander Sverdlin * MCLK rate should (c) be the sample rate, multiplied by one of the 17467b22517SAlexander Sverdlin * ratios listed in cs4271_mclk_fs_ratios table 17567b22517SAlexander Sverdlin */ 17667b22517SAlexander Sverdlin static int cs4271_set_dai_sysclk(struct snd_soc_dai *codec_dai, 17767b22517SAlexander Sverdlin int clk_id, unsigned int freq, int dir) 17867b22517SAlexander Sverdlin { 17967b22517SAlexander Sverdlin struct snd_soc_codec *codec = codec_dai->codec; 18067b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 18167b22517SAlexander Sverdlin 18267b22517SAlexander Sverdlin cs4271->mclk = freq; 18367b22517SAlexander Sverdlin return 0; 18467b22517SAlexander Sverdlin } 18567b22517SAlexander Sverdlin 18667b22517SAlexander Sverdlin static int cs4271_set_dai_fmt(struct snd_soc_dai *codec_dai, 18767b22517SAlexander Sverdlin unsigned int format) 18867b22517SAlexander Sverdlin { 18967b22517SAlexander Sverdlin struct snd_soc_codec *codec = codec_dai->codec; 19067b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 19167b22517SAlexander Sverdlin unsigned int val = 0; 1920d42e6e7SAlexander Sverdlin int ret; 19367b22517SAlexander Sverdlin 19467b22517SAlexander Sverdlin switch (format & SND_SOC_DAIFMT_MASTER_MASK) { 19567b22517SAlexander Sverdlin case SND_SOC_DAIFMT_CBS_CFS: 19667b22517SAlexander Sverdlin cs4271->master = 0; 19767b22517SAlexander Sverdlin break; 19867b22517SAlexander Sverdlin case SND_SOC_DAIFMT_CBM_CFM: 19967b22517SAlexander Sverdlin cs4271->master = 1; 20067b22517SAlexander Sverdlin val |= CS4271_MODE1_MASTER; 20167b22517SAlexander Sverdlin break; 20267b22517SAlexander Sverdlin default: 20367b22517SAlexander Sverdlin dev_err(codec->dev, "Invalid DAI format\n"); 20467b22517SAlexander Sverdlin return -EINVAL; 20567b22517SAlexander Sverdlin } 20667b22517SAlexander Sverdlin 20767b22517SAlexander Sverdlin switch (format & SND_SOC_DAIFMT_FORMAT_MASK) { 20867b22517SAlexander Sverdlin case SND_SOC_DAIFMT_LEFT_J: 20967b22517SAlexander Sverdlin val |= CS4271_MODE1_DAC_DIF_LJ; 2100d42e6e7SAlexander Sverdlin ret = snd_soc_update_bits(codec, CS4271_ADCCTL, 21167b22517SAlexander Sverdlin CS4271_ADCCTL_ADC_DIF_MASK, CS4271_ADCCTL_ADC_DIF_LJ); 2120d42e6e7SAlexander Sverdlin if (ret < 0) 2130d42e6e7SAlexander Sverdlin return ret; 21467b22517SAlexander Sverdlin break; 21567b22517SAlexander Sverdlin case SND_SOC_DAIFMT_I2S: 21667b22517SAlexander Sverdlin val |= CS4271_MODE1_DAC_DIF_I2S; 2170d42e6e7SAlexander Sverdlin ret = snd_soc_update_bits(codec, CS4271_ADCCTL, 21867b22517SAlexander Sverdlin CS4271_ADCCTL_ADC_DIF_MASK, CS4271_ADCCTL_ADC_DIF_I2S); 2190d42e6e7SAlexander Sverdlin if (ret < 0) 2200d42e6e7SAlexander Sverdlin return ret; 22167b22517SAlexander Sverdlin break; 22267b22517SAlexander Sverdlin default: 22367b22517SAlexander Sverdlin dev_err(codec->dev, "Invalid DAI format\n"); 22467b22517SAlexander Sverdlin return -EINVAL; 22567b22517SAlexander Sverdlin } 22667b22517SAlexander Sverdlin 2270d42e6e7SAlexander Sverdlin ret = snd_soc_update_bits(codec, CS4271_MODE1, 22867b22517SAlexander Sverdlin CS4271_MODE1_DAC_DIF_MASK | CS4271_MODE1_MASTER, val); 2290d42e6e7SAlexander Sverdlin if (ret < 0) 2300d42e6e7SAlexander Sverdlin return ret; 23167b22517SAlexander Sverdlin return 0; 23267b22517SAlexander Sverdlin } 23367b22517SAlexander Sverdlin 23467b22517SAlexander Sverdlin static int cs4271_deemph[] = {0, 44100, 48000, 32000}; 23567b22517SAlexander Sverdlin 23667b22517SAlexander Sverdlin static int cs4271_set_deemph(struct snd_soc_codec *codec) 23767b22517SAlexander Sverdlin { 23867b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 2390d42e6e7SAlexander Sverdlin int i, ret; 24067b22517SAlexander Sverdlin int val = CS4271_DACCTL_DEM_DIS; 24167b22517SAlexander Sverdlin 24267b22517SAlexander Sverdlin if (cs4271->deemph) { 24367b22517SAlexander Sverdlin /* Find closest de-emphasis freq */ 24467b22517SAlexander Sverdlin val = 1; 24567b22517SAlexander Sverdlin for (i = 2; i < ARRAY_SIZE(cs4271_deemph); i++) 24667b22517SAlexander Sverdlin if (abs(cs4271_deemph[i] - cs4271->rate) < 24767b22517SAlexander Sverdlin abs(cs4271_deemph[val] - cs4271->rate)) 24867b22517SAlexander Sverdlin val = i; 24967b22517SAlexander Sverdlin val <<= 4; 25067b22517SAlexander Sverdlin } 25167b22517SAlexander Sverdlin 2520d42e6e7SAlexander Sverdlin ret = snd_soc_update_bits(codec, CS4271_DACCTL, 25367b22517SAlexander Sverdlin CS4271_DACCTL_DEM_MASK, val); 2540d42e6e7SAlexander Sverdlin if (ret < 0) 2550d42e6e7SAlexander Sverdlin return ret; 2560d42e6e7SAlexander Sverdlin return 0; 25767b22517SAlexander Sverdlin } 25867b22517SAlexander Sverdlin 25967b22517SAlexander Sverdlin static int cs4271_get_deemph(struct snd_kcontrol *kcontrol, 26067b22517SAlexander Sverdlin struct snd_ctl_elem_value *ucontrol) 26167b22517SAlexander Sverdlin { 26267b22517SAlexander Sverdlin struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 26367b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 26467b22517SAlexander Sverdlin 26567b22517SAlexander Sverdlin ucontrol->value.enumerated.item[0] = cs4271->deemph; 26667b22517SAlexander Sverdlin return 0; 26767b22517SAlexander Sverdlin } 26867b22517SAlexander Sverdlin 26967b22517SAlexander Sverdlin static int cs4271_put_deemph(struct snd_kcontrol *kcontrol, 27067b22517SAlexander Sverdlin struct snd_ctl_elem_value *ucontrol) 27167b22517SAlexander Sverdlin { 27267b22517SAlexander Sverdlin struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); 27367b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 27467b22517SAlexander Sverdlin 27567b22517SAlexander Sverdlin cs4271->deemph = ucontrol->value.enumerated.item[0]; 27667b22517SAlexander Sverdlin return cs4271_set_deemph(codec); 27767b22517SAlexander Sverdlin } 27867b22517SAlexander Sverdlin 2795c3a12e9SAlexander Sverdlin struct cs4271_clk_cfg { 2805c3a12e9SAlexander Sverdlin bool master; /* codec mode */ 2815c3a12e9SAlexander Sverdlin u8 speed_mode; /* codec speed mode: 1x, 2x, 4x */ 2825c3a12e9SAlexander Sverdlin unsigned short ratio; /* MCLK / sample rate */ 2835c3a12e9SAlexander Sverdlin u8 ratio_mask; /* ratio bit mask for Master mode */ 2845c3a12e9SAlexander Sverdlin }; 2855c3a12e9SAlexander Sverdlin 2865c3a12e9SAlexander Sverdlin static struct cs4271_clk_cfg cs4271_clk_tab[] = { 2875c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_1X, 256, CS4271_MODE1_DIV_1}, 2885c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_1X, 384, CS4271_MODE1_DIV_15}, 2895c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_1X, 512, CS4271_MODE1_DIV_2}, 2905c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_1X, 768, CS4271_MODE1_DIV_3}, 2915c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_2X, 128, CS4271_MODE1_DIV_1}, 2925c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_2X, 192, CS4271_MODE1_DIV_15}, 2935c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_2X, 256, CS4271_MODE1_DIV_2}, 2945c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_2X, 384, CS4271_MODE1_DIV_3}, 2955c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_4X, 64, CS4271_MODE1_DIV_1}, 2965c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_4X, 96, CS4271_MODE1_DIV_15}, 2975c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_4X, 128, CS4271_MODE1_DIV_2}, 2985c3a12e9SAlexander Sverdlin {1, CS4271_MODE1_MODE_4X, 192, CS4271_MODE1_DIV_3}, 2995c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_1X, 256, CS4271_MODE1_DIV_1}, 3005c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_1X, 384, CS4271_MODE1_DIV_1}, 3015c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_1X, 512, CS4271_MODE1_DIV_1}, 3025c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_1X, 768, CS4271_MODE1_DIV_2}, 3035c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_1X, 1024, CS4271_MODE1_DIV_2}, 3045c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_2X, 128, CS4271_MODE1_DIV_1}, 3055c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_2X, 192, CS4271_MODE1_DIV_1}, 3065c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_2X, 256, CS4271_MODE1_DIV_1}, 3075c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_2X, 384, CS4271_MODE1_DIV_2}, 3085c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_2X, 512, CS4271_MODE1_DIV_2}, 3095c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_4X, 64, CS4271_MODE1_DIV_1}, 3105c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_4X, 96, CS4271_MODE1_DIV_1}, 3115c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_4X, 128, CS4271_MODE1_DIV_1}, 3125c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_4X, 192, CS4271_MODE1_DIV_2}, 3135c3a12e9SAlexander Sverdlin {0, CS4271_MODE1_MODE_4X, 256, CS4271_MODE1_DIV_2}, 3145c3a12e9SAlexander Sverdlin }; 3155c3a12e9SAlexander Sverdlin 3165c3a12e9SAlexander Sverdlin #define CS4171_NR_RATIOS ARRAY_SIZE(cs4271_clk_tab) 3175c3a12e9SAlexander Sverdlin 31867b22517SAlexander Sverdlin static int cs4271_hw_params(struct snd_pcm_substream *substream, 31967b22517SAlexander Sverdlin struct snd_pcm_hw_params *params, 32067b22517SAlexander Sverdlin struct snd_soc_dai *dai) 32167b22517SAlexander Sverdlin { 32267b22517SAlexander Sverdlin struct snd_soc_pcm_runtime *rtd = substream->private_data; 32367b22517SAlexander Sverdlin struct snd_soc_codec *codec = rtd->codec; 32467b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 3250d42e6e7SAlexander Sverdlin int i, ret; 3260d42e6e7SAlexander Sverdlin unsigned int ratio, val; 32767b22517SAlexander Sverdlin 32867b22517SAlexander Sverdlin cs4271->rate = params_rate(params); 3295c3a12e9SAlexander Sverdlin 3305c3a12e9SAlexander Sverdlin /* Configure DAC */ 3315c3a12e9SAlexander Sverdlin if (cs4271->rate < 50000) 3325c3a12e9SAlexander Sverdlin val = CS4271_MODE1_MODE_1X; 3335c3a12e9SAlexander Sverdlin else if (cs4271->rate < 100000) 3345c3a12e9SAlexander Sverdlin val = CS4271_MODE1_MODE_2X; 3355c3a12e9SAlexander Sverdlin else 3365c3a12e9SAlexander Sverdlin val = CS4271_MODE1_MODE_4X; 3375c3a12e9SAlexander Sverdlin 33867b22517SAlexander Sverdlin ratio = cs4271->mclk / cs4271->rate; 33967b22517SAlexander Sverdlin for (i = 0; i < CS4171_NR_RATIOS; i++) 3405c3a12e9SAlexander Sverdlin if ((cs4271_clk_tab[i].master == cs4271->master) && 3415c3a12e9SAlexander Sverdlin (cs4271_clk_tab[i].speed_mode == val) && 3425c3a12e9SAlexander Sverdlin (cs4271_clk_tab[i].ratio == ratio)) 34367b22517SAlexander Sverdlin break; 34467b22517SAlexander Sverdlin 3455c3a12e9SAlexander Sverdlin if (i == CS4171_NR_RATIOS) { 34667b22517SAlexander Sverdlin dev_err(codec->dev, "Invalid sample rate\n"); 34767b22517SAlexander Sverdlin return -EINVAL; 34867b22517SAlexander Sverdlin } 34967b22517SAlexander Sverdlin 3505c3a12e9SAlexander Sverdlin val |= cs4271_clk_tab[i].ratio_mask; 35167b22517SAlexander Sverdlin 3520d42e6e7SAlexander Sverdlin ret = snd_soc_update_bits(codec, CS4271_MODE1, 35367b22517SAlexander Sverdlin CS4271_MODE1_MODE_MASK | CS4271_MODE1_DIV_MASK, val); 3540d42e6e7SAlexander Sverdlin if (ret < 0) 3550d42e6e7SAlexander Sverdlin return ret; 35667b22517SAlexander Sverdlin 35767b22517SAlexander Sverdlin return cs4271_set_deemph(codec); 35867b22517SAlexander Sverdlin } 35967b22517SAlexander Sverdlin 36067b22517SAlexander Sverdlin static int cs4271_digital_mute(struct snd_soc_dai *dai, int mute) 36167b22517SAlexander Sverdlin { 36267b22517SAlexander Sverdlin struct snd_soc_codec *codec = dai->codec; 3630d42e6e7SAlexander Sverdlin int ret; 36467b22517SAlexander Sverdlin int val_a = 0; 36567b22517SAlexander Sverdlin int val_b = 0; 36667b22517SAlexander Sverdlin 36767b22517SAlexander Sverdlin if (mute) { 36867b22517SAlexander Sverdlin val_a = CS4271_VOLA_MUTE; 36967b22517SAlexander Sverdlin val_b = CS4271_VOLB_MUTE; 37067b22517SAlexander Sverdlin } 37167b22517SAlexander Sverdlin 3720d42e6e7SAlexander Sverdlin ret = snd_soc_update_bits(codec, CS4271_VOLA, CS4271_VOLA_MUTE, val_a); 3730d42e6e7SAlexander Sverdlin if (ret < 0) 3740d42e6e7SAlexander Sverdlin return ret; 3750d42e6e7SAlexander Sverdlin ret = snd_soc_update_bits(codec, CS4271_VOLB, CS4271_VOLB_MUTE, val_b); 3760d42e6e7SAlexander Sverdlin if (ret < 0) 3770d42e6e7SAlexander Sverdlin return ret; 37867b22517SAlexander Sverdlin 37967b22517SAlexander Sverdlin return 0; 38067b22517SAlexander Sverdlin } 38167b22517SAlexander Sverdlin 38267b22517SAlexander Sverdlin /* CS4271 controls */ 38367b22517SAlexander Sverdlin static DECLARE_TLV_DB_SCALE(cs4271_dac_tlv, -12700, 100, 0); 38467b22517SAlexander Sverdlin 38567b22517SAlexander Sverdlin static const struct snd_kcontrol_new cs4271_snd_controls[] = { 38667b22517SAlexander Sverdlin SOC_DOUBLE_R_TLV("Master Playback Volume", CS4271_VOLA, CS4271_VOLB, 38767b22517SAlexander Sverdlin 0, 0x7F, 1, cs4271_dac_tlv), 38867b22517SAlexander Sverdlin SOC_SINGLE("Digital Loopback Switch", CS4271_MODE2, 4, 1, 0), 38967b22517SAlexander Sverdlin SOC_SINGLE("Soft Ramp Switch", CS4271_DACVOL, 5, 1, 0), 39067b22517SAlexander Sverdlin SOC_SINGLE("Zero Cross Switch", CS4271_DACVOL, 4, 1, 0), 39167b22517SAlexander Sverdlin SOC_SINGLE_BOOL_EXT("De-emphasis Switch", 0, 39267b22517SAlexander Sverdlin cs4271_get_deemph, cs4271_put_deemph), 39367b22517SAlexander Sverdlin SOC_SINGLE("Auto-Mute Switch", CS4271_DACCTL, 7, 1, 0), 39467b22517SAlexander Sverdlin SOC_SINGLE("Slow Roll Off Filter Switch", CS4271_DACCTL, 6, 1, 0), 39567b22517SAlexander Sverdlin SOC_SINGLE("Soft Volume Ramp-Up Switch", CS4271_DACCTL, 3, 1, 0), 39667b22517SAlexander Sverdlin SOC_SINGLE("Soft Ramp-Down Switch", CS4271_DACCTL, 2, 1, 0), 39767b22517SAlexander Sverdlin SOC_SINGLE("Left Channel Inversion Switch", CS4271_DACCTL, 1, 1, 0), 39867b22517SAlexander Sverdlin SOC_SINGLE("Right Channel Inversion Switch", CS4271_DACCTL, 0, 1, 0), 39967b22517SAlexander Sverdlin SOC_DOUBLE("Master Capture Switch", CS4271_ADCCTL, 3, 2, 1, 1), 40067b22517SAlexander Sverdlin SOC_SINGLE("Dither 16-Bit Data Switch", CS4271_ADCCTL, 5, 1, 0), 40167b22517SAlexander Sverdlin SOC_DOUBLE("High Pass Filter Switch", CS4271_ADCCTL, 1, 0, 1, 1), 40267b22517SAlexander Sverdlin SOC_DOUBLE_R("Master Playback Switch", CS4271_VOLA, CS4271_VOLB, 40367b22517SAlexander Sverdlin 7, 1, 1), 40467b22517SAlexander Sverdlin }; 40567b22517SAlexander Sverdlin 40667b22517SAlexander Sverdlin static struct snd_soc_dai_ops cs4271_dai_ops = { 40767b22517SAlexander Sverdlin .hw_params = cs4271_hw_params, 40867b22517SAlexander Sverdlin .set_sysclk = cs4271_set_dai_sysclk, 40967b22517SAlexander Sverdlin .set_fmt = cs4271_set_dai_fmt, 41067b22517SAlexander Sverdlin .digital_mute = cs4271_digital_mute, 41167b22517SAlexander Sverdlin }; 41267b22517SAlexander Sverdlin 41316af7d60SMark Brown static struct snd_soc_dai_driver cs4271_dai = { 41467b22517SAlexander Sverdlin .name = "cs4271-hifi", 41567b22517SAlexander Sverdlin .playback = { 41667b22517SAlexander Sverdlin .stream_name = "Playback", 41767b22517SAlexander Sverdlin .channels_min = 2, 41867b22517SAlexander Sverdlin .channels_max = 2, 419383f8465SAlexander Sverdlin .rates = CS4271_PCM_RATES, 42067b22517SAlexander Sverdlin .formats = CS4271_PCM_FORMATS, 42167b22517SAlexander Sverdlin }, 42267b22517SAlexander Sverdlin .capture = { 42367b22517SAlexander Sverdlin .stream_name = "Capture", 42467b22517SAlexander Sverdlin .channels_min = 2, 42567b22517SAlexander Sverdlin .channels_max = 2, 426383f8465SAlexander Sverdlin .rates = CS4271_PCM_RATES, 42767b22517SAlexander Sverdlin .formats = CS4271_PCM_FORMATS, 42867b22517SAlexander Sverdlin }, 42967b22517SAlexander Sverdlin .ops = &cs4271_dai_ops, 43067b22517SAlexander Sverdlin .symmetric_rates = 1, 43167b22517SAlexander Sverdlin }; 43267b22517SAlexander Sverdlin 43367b22517SAlexander Sverdlin #ifdef CONFIG_PM 43467b22517SAlexander Sverdlin static int cs4271_soc_suspend(struct snd_soc_codec *codec, pm_message_t mesg) 43567b22517SAlexander Sverdlin { 4360d42e6e7SAlexander Sverdlin int ret; 43767b22517SAlexander Sverdlin /* Set power-down bit */ 4380d42e6e7SAlexander Sverdlin ret = snd_soc_update_bits(codec, CS4271_MODE2, 0, CS4271_MODE2_PDN); 4390d42e6e7SAlexander Sverdlin if (ret < 0) 4400d42e6e7SAlexander Sverdlin return ret; 44167b22517SAlexander Sverdlin return 0; 44267b22517SAlexander Sverdlin } 44367b22517SAlexander Sverdlin 44467b22517SAlexander Sverdlin static int cs4271_soc_resume(struct snd_soc_codec *codec) 44567b22517SAlexander Sverdlin { 4460d42e6e7SAlexander Sverdlin int ret; 44767b22517SAlexander Sverdlin /* Restore codec state */ 4480d42e6e7SAlexander Sverdlin ret = snd_soc_cache_sync(codec); 4490d42e6e7SAlexander Sverdlin if (ret < 0) 4500d42e6e7SAlexander Sverdlin return ret; 45167b22517SAlexander Sverdlin /* then disable the power-down bit */ 4520d42e6e7SAlexander Sverdlin ret = snd_soc_update_bits(codec, CS4271_MODE2, CS4271_MODE2_PDN, 0); 4530d42e6e7SAlexander Sverdlin if (ret < 0) 4540d42e6e7SAlexander Sverdlin return ret; 45567b22517SAlexander Sverdlin return 0; 45667b22517SAlexander Sverdlin } 45767b22517SAlexander Sverdlin #else 45867b22517SAlexander Sverdlin #define cs4271_soc_suspend NULL 45967b22517SAlexander Sverdlin #define cs4271_soc_resume NULL 46067b22517SAlexander Sverdlin #endif /* CONFIG_PM */ 46167b22517SAlexander Sverdlin 46267b22517SAlexander Sverdlin static int cs4271_probe(struct snd_soc_codec *codec) 46367b22517SAlexander Sverdlin { 46467b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 46567b22517SAlexander Sverdlin struct cs4271_platform_data *cs4271plat = codec->dev->platform_data; 46667b22517SAlexander Sverdlin int ret; 46767b22517SAlexander Sverdlin int gpio_nreset = -EINVAL; 46867b22517SAlexander Sverdlin 46967b22517SAlexander Sverdlin codec->control_data = cs4271->control_data; 47067b22517SAlexander Sverdlin 471a98a0bc6SAlexander Sverdlin if (cs4271plat && gpio_is_valid(cs4271plat->gpio_nreset)) 47267b22517SAlexander Sverdlin gpio_nreset = cs4271plat->gpio_nreset; 47367b22517SAlexander Sverdlin 47467b22517SAlexander Sverdlin if (gpio_nreset >= 0) 47567b22517SAlexander Sverdlin if (gpio_request(gpio_nreset, "CS4271 Reset")) 47667b22517SAlexander Sverdlin gpio_nreset = -EINVAL; 47767b22517SAlexander Sverdlin if (gpio_nreset >= 0) { 47867b22517SAlexander Sverdlin /* Reset codec */ 47967b22517SAlexander Sverdlin gpio_direction_output(gpio_nreset, 0); 48067b22517SAlexander Sverdlin udelay(1); 48167b22517SAlexander Sverdlin gpio_set_value(gpio_nreset, 1); 48267b22517SAlexander Sverdlin /* Give the codec time to wake up */ 48367b22517SAlexander Sverdlin udelay(1); 48467b22517SAlexander Sverdlin } 48567b22517SAlexander Sverdlin 48667b22517SAlexander Sverdlin cs4271->gpio_nreset = gpio_nreset; 48767b22517SAlexander Sverdlin 48867b22517SAlexander Sverdlin /* 48967b22517SAlexander Sverdlin * In case of I2C, chip address specified in board data. 49067b22517SAlexander Sverdlin * So cache IO operations use 8 bit codec register address. 49167b22517SAlexander Sverdlin * In case of SPI, chip address and register address 49267b22517SAlexander Sverdlin * passed together as 16 bit value. 49367b22517SAlexander Sverdlin * Anyway, register address is masked with 0xFF inside 49467b22517SAlexander Sverdlin * soc-cache code. 49567b22517SAlexander Sverdlin */ 49667b22517SAlexander Sverdlin if (cs4271->bus_type == SND_SOC_SPI) 49767b22517SAlexander Sverdlin ret = snd_soc_codec_set_cache_io(codec, 16, 8, 49867b22517SAlexander Sverdlin cs4271->bus_type); 49967b22517SAlexander Sverdlin else 50067b22517SAlexander Sverdlin ret = snd_soc_codec_set_cache_io(codec, 8, 8, 50167b22517SAlexander Sverdlin cs4271->bus_type); 50267b22517SAlexander Sverdlin if (ret) { 50367b22517SAlexander Sverdlin dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); 50467b22517SAlexander Sverdlin return ret; 50567b22517SAlexander Sverdlin } 50667b22517SAlexander Sverdlin 5070d42e6e7SAlexander Sverdlin ret = snd_soc_update_bits(codec, CS4271_MODE2, 0, 50867b22517SAlexander Sverdlin CS4271_MODE2_PDN | CS4271_MODE2_CPEN); 5090d42e6e7SAlexander Sverdlin if (ret < 0) 5100d42e6e7SAlexander Sverdlin return ret; 5110d42e6e7SAlexander Sverdlin ret = snd_soc_update_bits(codec, CS4271_MODE2, CS4271_MODE2_PDN, 0); 5120d42e6e7SAlexander Sverdlin if (ret < 0) 5130d42e6e7SAlexander Sverdlin return ret; 51467b22517SAlexander Sverdlin /* Power-up sequence requires 85 uS */ 51567b22517SAlexander Sverdlin udelay(85); 51667b22517SAlexander Sverdlin 51767b22517SAlexander Sverdlin return snd_soc_add_controls(codec, cs4271_snd_controls, 51867b22517SAlexander Sverdlin ARRAY_SIZE(cs4271_snd_controls)); 51967b22517SAlexander Sverdlin } 52067b22517SAlexander Sverdlin 52167b22517SAlexander Sverdlin static int cs4271_remove(struct snd_soc_codec *codec) 52267b22517SAlexander Sverdlin { 52367b22517SAlexander Sverdlin struct cs4271_private *cs4271 = snd_soc_codec_get_drvdata(codec); 524a98a0bc6SAlexander Sverdlin int gpio_nreset; 52567b22517SAlexander Sverdlin 52667b22517SAlexander Sverdlin gpio_nreset = cs4271->gpio_nreset; 52767b22517SAlexander Sverdlin 52867b22517SAlexander Sverdlin if (gpio_is_valid(gpio_nreset)) { 52967b22517SAlexander Sverdlin /* Set codec to the reset state */ 53067b22517SAlexander Sverdlin gpio_set_value(gpio_nreset, 0); 53167b22517SAlexander Sverdlin gpio_free(gpio_nreset); 53267b22517SAlexander Sverdlin } 53367b22517SAlexander Sverdlin 53467b22517SAlexander Sverdlin return 0; 53567b22517SAlexander Sverdlin }; 53667b22517SAlexander Sverdlin 53716af7d60SMark Brown static struct snd_soc_codec_driver soc_codec_dev_cs4271 = { 53867b22517SAlexander Sverdlin .probe = cs4271_probe, 53967b22517SAlexander Sverdlin .remove = cs4271_remove, 54067b22517SAlexander Sverdlin .suspend = cs4271_soc_suspend, 54167b22517SAlexander Sverdlin .resume = cs4271_soc_resume, 54267b22517SAlexander Sverdlin .reg_cache_default = cs4271_dflt_reg, 54367b22517SAlexander Sverdlin .reg_cache_size = ARRAY_SIZE(cs4271_dflt_reg), 54467b22517SAlexander Sverdlin .reg_word_size = sizeof(cs4271_dflt_reg[0]), 54567b22517SAlexander Sverdlin .compress_type = SND_SOC_FLAT_COMPRESSION, 54667b22517SAlexander Sverdlin }; 54767b22517SAlexander Sverdlin 54867b22517SAlexander Sverdlin #if defined(CONFIG_SPI_MASTER) 54967b22517SAlexander Sverdlin static int __devinit cs4271_spi_probe(struct spi_device *spi) 55067b22517SAlexander Sverdlin { 55167b22517SAlexander Sverdlin struct cs4271_private *cs4271; 55267b22517SAlexander Sverdlin 55367b22517SAlexander Sverdlin cs4271 = devm_kzalloc(&spi->dev, sizeof(*cs4271), GFP_KERNEL); 55467b22517SAlexander Sverdlin if (!cs4271) 55567b22517SAlexander Sverdlin return -ENOMEM; 55667b22517SAlexander Sverdlin 55767b22517SAlexander Sverdlin spi_set_drvdata(spi, cs4271); 55867b22517SAlexander Sverdlin cs4271->control_data = spi; 55967b22517SAlexander Sverdlin cs4271->bus_type = SND_SOC_SPI; 56067b22517SAlexander Sverdlin 56167b22517SAlexander Sverdlin return snd_soc_register_codec(&spi->dev, &soc_codec_dev_cs4271, 56267b22517SAlexander Sverdlin &cs4271_dai, 1); 56367b22517SAlexander Sverdlin } 56467b22517SAlexander Sverdlin 56567b22517SAlexander Sverdlin static int __devexit cs4271_spi_remove(struct spi_device *spi) 56667b22517SAlexander Sverdlin { 56767b22517SAlexander Sverdlin snd_soc_unregister_codec(&spi->dev); 56867b22517SAlexander Sverdlin return 0; 56967b22517SAlexander Sverdlin } 57067b22517SAlexander Sverdlin 57167b22517SAlexander Sverdlin static struct spi_driver cs4271_spi_driver = { 57267b22517SAlexander Sverdlin .driver = { 57367b22517SAlexander Sverdlin .name = "cs4271", 57467b22517SAlexander Sverdlin .owner = THIS_MODULE, 57567b22517SAlexander Sverdlin }, 57667b22517SAlexander Sverdlin .probe = cs4271_spi_probe, 57767b22517SAlexander Sverdlin .remove = __devexit_p(cs4271_spi_remove), 57867b22517SAlexander Sverdlin }; 57967b22517SAlexander Sverdlin #endif /* defined(CONFIG_SPI_MASTER) */ 58067b22517SAlexander Sverdlin 58167b22517SAlexander Sverdlin #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 58279a54ea1SAxel Lin static const struct i2c_device_id cs4271_i2c_id[] = { 58367b22517SAlexander Sverdlin {"cs4271", 0}, 58467b22517SAlexander Sverdlin {} 58567b22517SAlexander Sverdlin }; 58667b22517SAlexander Sverdlin MODULE_DEVICE_TABLE(i2c, cs4271_i2c_id); 58767b22517SAlexander Sverdlin 58867b22517SAlexander Sverdlin static int __devinit cs4271_i2c_probe(struct i2c_client *client, 58967b22517SAlexander Sverdlin const struct i2c_device_id *id) 59067b22517SAlexander Sverdlin { 59167b22517SAlexander Sverdlin struct cs4271_private *cs4271; 59267b22517SAlexander Sverdlin 59367b22517SAlexander Sverdlin cs4271 = devm_kzalloc(&client->dev, sizeof(*cs4271), GFP_KERNEL); 59467b22517SAlexander Sverdlin if (!cs4271) 59567b22517SAlexander Sverdlin return -ENOMEM; 59667b22517SAlexander Sverdlin 59767b22517SAlexander Sverdlin i2c_set_clientdata(client, cs4271); 59867b22517SAlexander Sverdlin cs4271->control_data = client; 59967b22517SAlexander Sverdlin cs4271->bus_type = SND_SOC_I2C; 60067b22517SAlexander Sverdlin 60167b22517SAlexander Sverdlin return snd_soc_register_codec(&client->dev, &soc_codec_dev_cs4271, 60267b22517SAlexander Sverdlin &cs4271_dai, 1); 60367b22517SAlexander Sverdlin } 60467b22517SAlexander Sverdlin 60567b22517SAlexander Sverdlin static int __devexit cs4271_i2c_remove(struct i2c_client *client) 60667b22517SAlexander Sverdlin { 60767b22517SAlexander Sverdlin snd_soc_unregister_codec(&client->dev); 60867b22517SAlexander Sverdlin return 0; 60967b22517SAlexander Sverdlin } 61067b22517SAlexander Sverdlin 61167b22517SAlexander Sverdlin static struct i2c_driver cs4271_i2c_driver = { 61267b22517SAlexander Sverdlin .driver = { 61367b22517SAlexander Sverdlin .name = "cs4271", 61467b22517SAlexander Sverdlin .owner = THIS_MODULE, 61567b22517SAlexander Sverdlin }, 61667b22517SAlexander Sverdlin .id_table = cs4271_i2c_id, 61767b22517SAlexander Sverdlin .probe = cs4271_i2c_probe, 61867b22517SAlexander Sverdlin .remove = __devexit_p(cs4271_i2c_remove), 61967b22517SAlexander Sverdlin }; 62067b22517SAlexander Sverdlin #endif /* defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) */ 62167b22517SAlexander Sverdlin 62267b22517SAlexander Sverdlin /* 62367b22517SAlexander Sverdlin * We only register our serial bus driver here without 62467b22517SAlexander Sverdlin * assignment to particular chip. So if any of the below 62567b22517SAlexander Sverdlin * fails, there is some problem with I2C or SPI subsystem. 62667b22517SAlexander Sverdlin * In most cases this module will be compiled with support 62767b22517SAlexander Sverdlin * of only one serial bus. 62867b22517SAlexander Sverdlin */ 62967b22517SAlexander Sverdlin static int __init cs4271_modinit(void) 63067b22517SAlexander Sverdlin { 63167b22517SAlexander Sverdlin int ret; 63267b22517SAlexander Sverdlin 63367b22517SAlexander Sverdlin #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 63467b22517SAlexander Sverdlin ret = i2c_add_driver(&cs4271_i2c_driver); 63567b22517SAlexander Sverdlin if (ret) { 63667b22517SAlexander Sverdlin pr_err("Failed to register CS4271 I2C driver: %d\n", ret); 63767b22517SAlexander Sverdlin return ret; 63867b22517SAlexander Sverdlin } 63967b22517SAlexander Sverdlin #endif 64067b22517SAlexander Sverdlin 64167b22517SAlexander Sverdlin #if defined(CONFIG_SPI_MASTER) 64267b22517SAlexander Sverdlin ret = spi_register_driver(&cs4271_spi_driver); 64367b22517SAlexander Sverdlin if (ret) { 64467b22517SAlexander Sverdlin pr_err("Failed to register CS4271 SPI driver: %d\n", ret); 64567b22517SAlexander Sverdlin return ret; 64667b22517SAlexander Sverdlin } 64767b22517SAlexander Sverdlin #endif 64867b22517SAlexander Sverdlin 64967b22517SAlexander Sverdlin return 0; 65067b22517SAlexander Sverdlin } 65167b22517SAlexander Sverdlin module_init(cs4271_modinit); 65267b22517SAlexander Sverdlin 65367b22517SAlexander Sverdlin static void __exit cs4271_modexit(void) 65467b22517SAlexander Sverdlin { 65567b22517SAlexander Sverdlin #if defined(CONFIG_SPI_MASTER) 65667b22517SAlexander Sverdlin spi_unregister_driver(&cs4271_spi_driver); 65767b22517SAlexander Sverdlin #endif 65867b22517SAlexander Sverdlin 65967b22517SAlexander Sverdlin #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) 66067b22517SAlexander Sverdlin i2c_del_driver(&cs4271_i2c_driver); 66167b22517SAlexander Sverdlin #endif 66267b22517SAlexander Sverdlin } 66367b22517SAlexander Sverdlin module_exit(cs4271_modexit); 66467b22517SAlexander Sverdlin 66567b22517SAlexander Sverdlin MODULE_AUTHOR("Alexander Sverdlin <subaparts@yandex.ru>"); 66667b22517SAlexander Sverdlin MODULE_DESCRIPTION("Cirrus Logic CS4271 ALSA SoC Codec Driver"); 66767b22517SAlexander Sverdlin MODULE_LICENSE("GPL"); 668