696 lines
20 KiB
C
696 lines
20 KiB
C
/*
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* Cirrus Logic CS42448/CS42888 Audio CODEC Digital Audio Interface (DAI) driver
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*
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* Copyright (C) 2014 Freescale Semiconductor, Inc.
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*
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* Author: Nicolin Chen <Guangyu.Chen@freescale.com>
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of any
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* kind, whether express or implied.
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*/
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/gpio/consumer.h>
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#include <linux/pm_runtime.h>
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#include <linux/regulator/consumer.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/tlv.h>
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#include "cs42xx8.h"
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#define CS42XX8_NUM_SUPPLIES 4
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static const char *const cs42xx8_supply_names[CS42XX8_NUM_SUPPLIES] = {
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"VA",
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"VD",
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"VLS",
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"VLC",
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};
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#define CS42XX8_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
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SNDRV_PCM_FMTBIT_S20_3LE | \
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SNDRV_PCM_FMTBIT_S24_LE | \
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SNDRV_PCM_FMTBIT_S32_LE)
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/* codec private data */
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struct cs42xx8_priv {
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struct regulator_bulk_data supplies[CS42XX8_NUM_SUPPLIES];
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const struct cs42xx8_driver_data *drvdata;
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struct regmap *regmap;
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struct clk *clk;
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bool slave_mode;
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unsigned long sysclk;
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u32 tx_channels;
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struct gpio_desc *gpiod_reset;
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u32 rate[2];
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};
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/* -127.5dB to 0dB with step of 0.5dB */
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static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
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/* -64dB to 24dB with step of 0.5dB */
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static const DECLARE_TLV_DB_SCALE(adc_tlv, -6400, 50, 0);
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static const char *const cs42xx8_adc_single[] = { "Differential", "Single-Ended" };
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static const char *const cs42xx8_szc[] = { "Immediate Change", "Zero Cross",
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"Soft Ramp", "Soft Ramp on Zero Cross" };
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static const struct soc_enum adc1_single_enum =
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SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 4, 2, cs42xx8_adc_single);
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static const struct soc_enum adc2_single_enum =
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SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 3, 2, cs42xx8_adc_single);
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static const struct soc_enum adc3_single_enum =
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SOC_ENUM_SINGLE(CS42XX8_ADCCTL, 2, 2, cs42xx8_adc_single);
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static const struct soc_enum dac_szc_enum =
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SOC_ENUM_SINGLE(CS42XX8_TXCTL, 5, 4, cs42xx8_szc);
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static const struct soc_enum adc_szc_enum =
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SOC_ENUM_SINGLE(CS42XX8_TXCTL, 0, 4, cs42xx8_szc);
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static const struct snd_kcontrol_new cs42xx8_snd_controls[] = {
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SOC_DOUBLE_R_TLV("DAC1 Playback Volume", CS42XX8_VOLAOUT1,
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CS42XX8_VOLAOUT2, 0, 0xff, 1, dac_tlv),
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SOC_DOUBLE_R_TLV("DAC2 Playback Volume", CS42XX8_VOLAOUT3,
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CS42XX8_VOLAOUT4, 0, 0xff, 1, dac_tlv),
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SOC_DOUBLE_R_TLV("DAC3 Playback Volume", CS42XX8_VOLAOUT5,
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CS42XX8_VOLAOUT6, 0, 0xff, 1, dac_tlv),
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SOC_DOUBLE_R_TLV("DAC4 Playback Volume", CS42XX8_VOLAOUT7,
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CS42XX8_VOLAOUT8, 0, 0xff, 1, dac_tlv),
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SOC_DOUBLE_R_S_TLV("ADC1 Capture Volume", CS42XX8_VOLAIN1,
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CS42XX8_VOLAIN2, 0, -0x80, 0x30, 7, 0, adc_tlv),
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SOC_DOUBLE_R_S_TLV("ADC2 Capture Volume", CS42XX8_VOLAIN3,
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CS42XX8_VOLAIN4, 0, -0x80, 0x30, 7, 0, adc_tlv),
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SOC_DOUBLE("DAC1 Invert Switch", CS42XX8_DACINV, 0, 1, 1, 0),
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SOC_DOUBLE("DAC2 Invert Switch", CS42XX8_DACINV, 2, 3, 1, 0),
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SOC_DOUBLE("DAC3 Invert Switch", CS42XX8_DACINV, 4, 5, 1, 0),
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SOC_DOUBLE("DAC4 Invert Switch", CS42XX8_DACINV, 6, 7, 1, 0),
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SOC_DOUBLE("ADC1 Invert Switch", CS42XX8_ADCINV, 0, 1, 1, 0),
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SOC_DOUBLE("ADC2 Invert Switch", CS42XX8_ADCINV, 2, 3, 1, 0),
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SOC_SINGLE("ADC High-Pass Filter Switch", CS42XX8_ADCCTL, 7, 1, 1),
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SOC_SINGLE("DAC De-emphasis Switch", CS42XX8_ADCCTL, 5, 1, 0),
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SOC_ENUM("ADC1 Single Ended Mode Switch", adc1_single_enum),
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SOC_ENUM("ADC2 Single Ended Mode Switch", adc2_single_enum),
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SOC_SINGLE("DAC Single Volume Control Switch", CS42XX8_TXCTL, 7, 1, 0),
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SOC_ENUM("DAC Soft Ramp & Zero Cross Control Switch", dac_szc_enum),
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SOC_SINGLE("DAC Auto Mute Switch", CS42XX8_TXCTL, 4, 1, 0),
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SOC_SINGLE("Mute ADC Serial Port Switch", CS42XX8_TXCTL, 3, 1, 0),
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SOC_SINGLE("ADC Single Volume Control Switch", CS42XX8_TXCTL, 2, 1, 0),
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SOC_ENUM("ADC Soft Ramp & Zero Cross Control Switch", adc_szc_enum),
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};
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static const struct snd_kcontrol_new cs42xx8_adc3_snd_controls[] = {
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SOC_DOUBLE_R_S_TLV("ADC3 Capture Volume", CS42XX8_VOLAIN5,
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CS42XX8_VOLAIN6, 0, -0x80, 0x30, 7, 0, adc_tlv),
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SOC_DOUBLE("ADC3 Invert Switch", CS42XX8_ADCINV, 4, 5, 1, 0),
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SOC_ENUM("ADC3 Single Ended Mode Switch", adc3_single_enum),
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};
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static const struct snd_soc_dapm_widget cs42xx8_dapm_widgets[] = {
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SND_SOC_DAPM_DAC("DAC1", "Playback", CS42XX8_PWRCTL, 1, 1),
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SND_SOC_DAPM_DAC("DAC2", "Playback", CS42XX8_PWRCTL, 2, 1),
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SND_SOC_DAPM_DAC("DAC3", "Playback", CS42XX8_PWRCTL, 3, 1),
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SND_SOC_DAPM_DAC("DAC4", "Playback", CS42XX8_PWRCTL, 4, 1),
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SND_SOC_DAPM_OUTPUT("AOUT1L"),
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SND_SOC_DAPM_OUTPUT("AOUT1R"),
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SND_SOC_DAPM_OUTPUT("AOUT2L"),
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SND_SOC_DAPM_OUTPUT("AOUT2R"),
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SND_SOC_DAPM_OUTPUT("AOUT3L"),
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SND_SOC_DAPM_OUTPUT("AOUT3R"),
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SND_SOC_DAPM_OUTPUT("AOUT4L"),
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SND_SOC_DAPM_OUTPUT("AOUT4R"),
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SND_SOC_DAPM_ADC("ADC1", "Capture", CS42XX8_PWRCTL, 5, 1),
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SND_SOC_DAPM_ADC("ADC2", "Capture", CS42XX8_PWRCTL, 6, 1),
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SND_SOC_DAPM_INPUT("AIN1L"),
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SND_SOC_DAPM_INPUT("AIN1R"),
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SND_SOC_DAPM_INPUT("AIN2L"),
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SND_SOC_DAPM_INPUT("AIN2R"),
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SND_SOC_DAPM_SUPPLY("PWR", CS42XX8_PWRCTL, 0, 1, NULL, 0),
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};
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static const struct snd_soc_dapm_widget cs42xx8_adc3_dapm_widgets[] = {
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SND_SOC_DAPM_ADC("ADC3", "Capture", CS42XX8_PWRCTL, 7, 1),
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SND_SOC_DAPM_INPUT("AIN3L"),
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SND_SOC_DAPM_INPUT("AIN3R"),
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};
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static const struct snd_soc_dapm_route cs42xx8_dapm_routes[] = {
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/* Playback */
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{ "AOUT1L", NULL, "DAC1" },
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{ "AOUT1R", NULL, "DAC1" },
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{ "DAC1", NULL, "PWR" },
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{ "AOUT2L", NULL, "DAC2" },
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{ "AOUT2R", NULL, "DAC2" },
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{ "DAC2", NULL, "PWR" },
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{ "AOUT3L", NULL, "DAC3" },
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{ "AOUT3R", NULL, "DAC3" },
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{ "DAC3", NULL, "PWR" },
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{ "AOUT4L", NULL, "DAC4" },
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{ "AOUT4R", NULL, "DAC4" },
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{ "DAC4", NULL, "PWR" },
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/* Capture */
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{ "ADC1", NULL, "AIN1L" },
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{ "ADC1", NULL, "AIN1R" },
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{ "ADC1", NULL, "PWR" },
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{ "ADC2", NULL, "AIN2L" },
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{ "ADC2", NULL, "AIN2R" },
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{ "ADC2", NULL, "PWR" },
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};
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static const struct snd_soc_dapm_route cs42xx8_adc3_dapm_routes[] = {
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/* Capture */
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{ "ADC3", NULL, "AIN3L" },
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{ "ADC3", NULL, "AIN3R" },
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{ "ADC3", NULL, "PWR" },
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};
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struct cs42xx8_ratios {
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unsigned int mfreq;
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unsigned int min_mclk;
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unsigned int max_mclk;
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unsigned int ratio[3];
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};
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/*
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* According to reference mannual, define the cs42xx8_ratio struct
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* MFreq2 | MFreq1 | MFreq0 | Description | SSM | DSM | QSM |
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* 0 | 0 | 0 |1.029MHz to 12.8MHz | 256 | 128 | 64 |
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* 0 | 0 | 1 |1.536MHz to 19.2MHz | 384 | 192 | 96 |
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* 0 | 1 | 0 |2.048MHz to 25.6MHz | 512 | 256 | 128 |
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* 0 | 1 | 1 |3.072MHz to 38.4MHz | 768 | 384 | 192 |
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* 1 | x | x |4.096MHz to 51.2MHz |1024 | 512 | 256 |
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*/
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static const struct cs42xx8_ratios cs42xx8_ratios[] = {
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{ 0, 1029000, 12800000, {256, 128, 64} },
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{ 2, 1536000, 19200000, {384, 192, 96} },
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{ 4, 2048000, 25600000, {512, 256, 128} },
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{ 6, 3072000, 38400000, {768, 384, 192} },
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{ 8, 4096000, 51200000, {1024, 512, 256} },
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};
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static int cs42xx8_set_dai_sysclk(struct snd_soc_dai *codec_dai,
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int clk_id, unsigned int freq, int dir)
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{
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struct snd_soc_component *component = codec_dai->component;
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struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
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cs42xx8->sysclk = freq;
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return 0;
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}
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static int cs42xx8_set_dai_fmt(struct snd_soc_dai *codec_dai,
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unsigned int format)
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{
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struct snd_soc_component *component = codec_dai->component;
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struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
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u32 val;
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/* Set DAI format */
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switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_LEFT_J:
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val = CS42XX8_INTF_DAC_DIF_LEFTJ | CS42XX8_INTF_ADC_DIF_LEFTJ;
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break;
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case SND_SOC_DAIFMT_I2S:
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val = CS42XX8_INTF_DAC_DIF_I2S | CS42XX8_INTF_ADC_DIF_I2S;
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break;
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case SND_SOC_DAIFMT_RIGHT_J:
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val = CS42XX8_INTF_DAC_DIF_RIGHTJ | CS42XX8_INTF_ADC_DIF_RIGHTJ;
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break;
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case SND_SOC_DAIFMT_DSP_A:
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val = CS42XX8_INTF_DAC_DIF_TDM | CS42XX8_INTF_ADC_DIF_TDM;
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break;
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default:
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dev_err(component->dev, "unsupported dai format\n");
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return -EINVAL;
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}
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regmap_update_bits(cs42xx8->regmap, CS42XX8_INTF,
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CS42XX8_INTF_DAC_DIF_MASK |
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CS42XX8_INTF_ADC_DIF_MASK, val);
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/* Set master/slave audio interface */
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switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
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case SND_SOC_DAIFMT_CBS_CFS:
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cs42xx8->slave_mode = true;
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break;
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case SND_SOC_DAIFMT_CBM_CFM:
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cs42xx8->slave_mode = false;
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break;
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default:
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dev_err(component->dev, "unsupported master/slave mode\n");
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return -EINVAL;
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}
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return 0;
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}
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static int cs42xx8_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_component *component = dai->component;
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struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
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bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
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u32 ratio[2];
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u32 rate[2];
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u32 fm[2];
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u32 i, val, mask;
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bool condition1, condition2;
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if (tx)
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cs42xx8->tx_channels = params_channels(params);
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rate[tx] = params_rate(params);
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rate[!tx] = cs42xx8->rate[!tx];
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ratio[tx] = rate[tx] > 0 ? cs42xx8->sysclk / rate[tx] : 0;
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ratio[!tx] = rate[!tx] > 0 ? cs42xx8->sysclk / rate[!tx] : 0;
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/* Get functional mode for tx and rx according to rate */
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for (i = 0; i < 2; i++) {
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if (cs42xx8->slave_mode) {
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fm[i] = CS42XX8_FM_AUTO;
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} else {
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if (rate[i] < 50000) {
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fm[i] = CS42XX8_FM_SINGLE;
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} else if (rate[i] > 50000 && rate[i] < 100000) {
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fm[i] = CS42XX8_FM_DOUBLE;
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} else if (rate[i] > 100000 && rate[i] < 200000) {
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fm[i] = CS42XX8_FM_QUAD;
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} else {
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dev_err(component->dev,
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"unsupported sample rate\n");
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return -EINVAL;
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}
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}
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}
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for (i = 0; i < ARRAY_SIZE(cs42xx8_ratios); i++) {
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/* Is the ratio[tx] valid ? */
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condition1 = ((fm[tx] == CS42XX8_FM_AUTO) ?
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(cs42xx8_ratios[i].ratio[0] == ratio[tx] ||
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cs42xx8_ratios[i].ratio[1] == ratio[tx] ||
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cs42xx8_ratios[i].ratio[2] == ratio[tx]) :
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(cs42xx8_ratios[i].ratio[fm[tx]] == ratio[tx])) &&
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cs42xx8->sysclk >= cs42xx8_ratios[i].min_mclk &&
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cs42xx8->sysclk <= cs42xx8_ratios[i].max_mclk;
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if (!ratio[tx])
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condition1 = true;
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/* Is the ratio[!tx] valid ? */
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condition2 = ((fm[!tx] == CS42XX8_FM_AUTO) ?
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(cs42xx8_ratios[i].ratio[0] == ratio[!tx] ||
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cs42xx8_ratios[i].ratio[1] == ratio[!tx] ||
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cs42xx8_ratios[i].ratio[2] == ratio[!tx]) :
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(cs42xx8_ratios[i].ratio[fm[!tx]] == ratio[!tx]));
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if (!ratio[!tx])
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condition2 = true;
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/*
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* Both ratio[tx] and ratio[!tx] is valid, then we get
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* a proper MFreq.
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*/
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if (condition1 && condition2)
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break;
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}
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if (i == ARRAY_SIZE(cs42xx8_ratios)) {
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dev_err(component->dev, "unsupported sysclk ratio\n");
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return -EINVAL;
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}
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cs42xx8->rate[tx] = params_rate(params);
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mask = CS42XX8_FUNCMOD_MFREQ_MASK;
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val = cs42xx8_ratios[i].mfreq;
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regmap_update_bits(cs42xx8->regmap, CS42XX8_FUNCMOD,
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CS42XX8_FUNCMOD_xC_FM_MASK(tx) | mask,
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CS42XX8_FUNCMOD_xC_FM(tx, fm[tx]) | val);
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return 0;
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}
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static int cs42xx8_hw_free(struct snd_pcm_substream *substream,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_component *component = dai->component;
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struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
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bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
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/* Clear stored rate */
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cs42xx8->rate[tx] = 0;
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regmap_update_bits(cs42xx8->regmap, CS42XX8_FUNCMOD,
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CS42XX8_FUNCMOD_xC_FM_MASK(tx),
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CS42XX8_FUNCMOD_xC_FM(tx, CS42XX8_FM_AUTO));
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return 0;
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}
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static int cs42xx8_mute(struct snd_soc_dai *dai, int mute, int direction)
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{
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struct snd_soc_component *component = dai->component;
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struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
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u8 dac_unmute = cs42xx8->tx_channels ?
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~((0x1 << cs42xx8->tx_channels) - 1) : 0;
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regmap_write(cs42xx8->regmap, CS42XX8_DACMUTE,
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mute ? CS42XX8_DACMUTE_ALL : dac_unmute);
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return 0;
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}
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static const struct snd_soc_dai_ops cs42xx8_dai_ops = {
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.set_fmt = cs42xx8_set_dai_fmt,
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.set_sysclk = cs42xx8_set_dai_sysclk,
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.hw_params = cs42xx8_hw_params,
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.hw_free = cs42xx8_hw_free,
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.mute_stream = cs42xx8_mute,
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.no_capture_mute = 1,
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};
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static struct snd_soc_dai_driver cs42xx8_dai = {
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.playback = {
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.stream_name = "Playback",
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.channels_min = 1,
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.channels_max = 8,
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.rates = SNDRV_PCM_RATE_8000_192000,
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.formats = CS42XX8_FORMATS,
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},
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.capture = {
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.stream_name = "Capture",
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.channels_min = 1,
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.rates = SNDRV_PCM_RATE_8000_192000,
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.formats = CS42XX8_FORMATS,
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},
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.ops = &cs42xx8_dai_ops,
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};
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static const struct reg_default cs42xx8_reg[] = {
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{ 0x02, 0x00 }, /* Power Control */
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{ 0x03, 0xF0 }, /* Functional Mode */
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{ 0x04, 0x46 }, /* Interface Formats */
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{ 0x05, 0x00 }, /* ADC Control & DAC De-Emphasis */
|
|
{ 0x06, 0x10 }, /* Transition Control */
|
|
{ 0x07, 0x00 }, /* DAC Channel Mute */
|
|
{ 0x08, 0x00 }, /* Volume Control AOUT1 */
|
|
{ 0x09, 0x00 }, /* Volume Control AOUT2 */
|
|
{ 0x0a, 0x00 }, /* Volume Control AOUT3 */
|
|
{ 0x0b, 0x00 }, /* Volume Control AOUT4 */
|
|
{ 0x0c, 0x00 }, /* Volume Control AOUT5 */
|
|
{ 0x0d, 0x00 }, /* Volume Control AOUT6 */
|
|
{ 0x0e, 0x00 }, /* Volume Control AOUT7 */
|
|
{ 0x0f, 0x00 }, /* Volume Control AOUT8 */
|
|
{ 0x10, 0x00 }, /* DAC Channel Invert */
|
|
{ 0x11, 0x00 }, /* Volume Control AIN1 */
|
|
{ 0x12, 0x00 }, /* Volume Control AIN2 */
|
|
{ 0x13, 0x00 }, /* Volume Control AIN3 */
|
|
{ 0x14, 0x00 }, /* Volume Control AIN4 */
|
|
{ 0x15, 0x00 }, /* Volume Control AIN5 */
|
|
{ 0x16, 0x00 }, /* Volume Control AIN6 */
|
|
{ 0x17, 0x00 }, /* ADC Channel Invert */
|
|
{ 0x18, 0x00 }, /* Status Control */
|
|
{ 0x1a, 0x00 }, /* Status Mask */
|
|
{ 0x1b, 0x00 }, /* MUTEC Pin Control */
|
|
};
|
|
|
|
static bool cs42xx8_volatile_register(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case CS42XX8_STATUS:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool cs42xx8_writeable_register(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case CS42XX8_CHIPID:
|
|
case CS42XX8_STATUS:
|
|
return false;
|
|
default:
|
|
return true;
|
|
}
|
|
}
|
|
|
|
const struct regmap_config cs42xx8_regmap_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
|
|
.max_register = CS42XX8_LASTREG,
|
|
.reg_defaults = cs42xx8_reg,
|
|
.num_reg_defaults = ARRAY_SIZE(cs42xx8_reg),
|
|
.volatile_reg = cs42xx8_volatile_register,
|
|
.writeable_reg = cs42xx8_writeable_register,
|
|
.cache_type = REGCACHE_RBTREE,
|
|
};
|
|
EXPORT_SYMBOL_GPL(cs42xx8_regmap_config);
|
|
|
|
static int cs42xx8_component_probe(struct snd_soc_component *component)
|
|
{
|
|
struct cs42xx8_priv *cs42xx8 = snd_soc_component_get_drvdata(component);
|
|
struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
|
|
|
|
switch (cs42xx8->drvdata->num_adcs) {
|
|
case 3:
|
|
snd_soc_add_component_controls(component, cs42xx8_adc3_snd_controls,
|
|
ARRAY_SIZE(cs42xx8_adc3_snd_controls));
|
|
snd_soc_dapm_new_controls(dapm, cs42xx8_adc3_dapm_widgets,
|
|
ARRAY_SIZE(cs42xx8_adc3_dapm_widgets));
|
|
snd_soc_dapm_add_routes(dapm, cs42xx8_adc3_dapm_routes,
|
|
ARRAY_SIZE(cs42xx8_adc3_dapm_routes));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* Mute all DAC channels */
|
|
regmap_write(cs42xx8->regmap, CS42XX8_DACMUTE, CS42XX8_DACMUTE_ALL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct snd_soc_component_driver cs42xx8_driver = {
|
|
.probe = cs42xx8_component_probe,
|
|
.controls = cs42xx8_snd_controls,
|
|
.num_controls = ARRAY_SIZE(cs42xx8_snd_controls),
|
|
.dapm_widgets = cs42xx8_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(cs42xx8_dapm_widgets),
|
|
.dapm_routes = cs42xx8_dapm_routes,
|
|
.num_dapm_routes = ARRAY_SIZE(cs42xx8_dapm_routes),
|
|
.use_pmdown_time = 1,
|
|
.endianness = 1,
|
|
};
|
|
|
|
const struct cs42xx8_driver_data cs42448_data = {
|
|
.name = "cs42448",
|
|
.num_adcs = 3,
|
|
};
|
|
EXPORT_SYMBOL_GPL(cs42448_data);
|
|
|
|
const struct cs42xx8_driver_data cs42888_data = {
|
|
.name = "cs42888",
|
|
.num_adcs = 2,
|
|
};
|
|
EXPORT_SYMBOL_GPL(cs42888_data);
|
|
|
|
const struct of_device_id cs42xx8_of_match[] = {
|
|
{ .compatible = "cirrus,cs42448", .data = &cs42448_data, },
|
|
{ .compatible = "cirrus,cs42888", .data = &cs42888_data, },
|
|
{ /* sentinel */ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, cs42xx8_of_match);
|
|
EXPORT_SYMBOL_GPL(cs42xx8_of_match);
|
|
|
|
int cs42xx8_probe(struct device *dev, struct regmap *regmap)
|
|
{
|
|
const struct of_device_id *of_id;
|
|
struct cs42xx8_priv *cs42xx8;
|
|
int ret, val, i;
|
|
|
|
if (IS_ERR(regmap)) {
|
|
ret = PTR_ERR(regmap);
|
|
dev_err(dev, "failed to allocate regmap: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
cs42xx8 = devm_kzalloc(dev, sizeof(*cs42xx8), GFP_KERNEL);
|
|
if (cs42xx8 == NULL)
|
|
return -ENOMEM;
|
|
|
|
cs42xx8->regmap = regmap;
|
|
dev_set_drvdata(dev, cs42xx8);
|
|
|
|
of_id = of_match_device(cs42xx8_of_match, dev);
|
|
if (of_id)
|
|
cs42xx8->drvdata = of_id->data;
|
|
|
|
if (!cs42xx8->drvdata) {
|
|
dev_err(dev, "failed to find driver data\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
cs42xx8->gpiod_reset = devm_gpiod_get_optional(dev, "reset",
|
|
GPIOD_OUT_HIGH);
|
|
if (IS_ERR(cs42xx8->gpiod_reset))
|
|
return PTR_ERR(cs42xx8->gpiod_reset);
|
|
|
|
gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 0);
|
|
|
|
cs42xx8->clk = devm_clk_get(dev, "mclk");
|
|
if (IS_ERR(cs42xx8->clk)) {
|
|
dev_err(dev, "failed to get the clock: %ld\n",
|
|
PTR_ERR(cs42xx8->clk));
|
|
return -EINVAL;
|
|
}
|
|
|
|
cs42xx8->sysclk = clk_get_rate(cs42xx8->clk);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(cs42xx8->supplies); i++)
|
|
cs42xx8->supplies[i].supply = cs42xx8_supply_names[i];
|
|
|
|
ret = devm_regulator_bulk_get(dev,
|
|
ARRAY_SIZE(cs42xx8->supplies), cs42xx8->supplies);
|
|
if (ret) {
|
|
dev_err(dev, "failed to request supplies: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(cs42xx8->supplies),
|
|
cs42xx8->supplies);
|
|
if (ret) {
|
|
dev_err(dev, "failed to enable supplies: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Make sure hardware reset done */
|
|
msleep(5);
|
|
|
|
/* Validate the chip ID */
|
|
ret = regmap_read(cs42xx8->regmap, CS42XX8_CHIPID, &val);
|
|
if (ret < 0) {
|
|
dev_err(dev, "failed to get device ID, ret = %d", ret);
|
|
goto err_enable;
|
|
}
|
|
|
|
/* The top four bits of the chip ID should be 0000 */
|
|
if (((val & CS42XX8_CHIPID_CHIP_ID_MASK) >> 4) != 0x00) {
|
|
dev_err(dev, "unmatched chip ID: %d\n",
|
|
(val & CS42XX8_CHIPID_CHIP_ID_MASK) >> 4);
|
|
ret = -EINVAL;
|
|
goto err_enable;
|
|
}
|
|
|
|
dev_info(dev, "found device, revision %X\n",
|
|
val & CS42XX8_CHIPID_REV_ID_MASK);
|
|
|
|
cs42xx8_dai.name = cs42xx8->drvdata->name;
|
|
|
|
/* Each adc supports stereo input */
|
|
cs42xx8_dai.capture.channels_max = cs42xx8->drvdata->num_adcs * 2;
|
|
|
|
ret = devm_snd_soc_register_component(dev, &cs42xx8_driver, &cs42xx8_dai, 1);
|
|
if (ret) {
|
|
dev_err(dev, "failed to register component:%d\n", ret);
|
|
goto err_enable;
|
|
}
|
|
|
|
regcache_cache_only(cs42xx8->regmap, true);
|
|
|
|
err_enable:
|
|
regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies),
|
|
cs42xx8->supplies);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(cs42xx8_probe);
|
|
|
|
#ifdef CONFIG_PM
|
|
static int cs42xx8_runtime_resume(struct device *dev)
|
|
{
|
|
struct cs42xx8_priv *cs42xx8 = dev_get_drvdata(dev);
|
|
int ret;
|
|
|
|
ret = clk_prepare_enable(cs42xx8->clk);
|
|
if (ret) {
|
|
dev_err(dev, "failed to enable mclk: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 0);
|
|
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(cs42xx8->supplies),
|
|
cs42xx8->supplies);
|
|
if (ret) {
|
|
dev_err(dev, "failed to enable supplies: %d\n", ret);
|
|
goto err_clk;
|
|
}
|
|
|
|
/* Make sure hardware reset done */
|
|
msleep(5);
|
|
|
|
regcache_cache_only(cs42xx8->regmap, false);
|
|
regcache_mark_dirty(cs42xx8->regmap);
|
|
|
|
ret = regcache_sync(cs42xx8->regmap);
|
|
if (ret) {
|
|
dev_err(dev, "failed to sync regmap: %d\n", ret);
|
|
goto err_bulk;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_bulk:
|
|
regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies),
|
|
cs42xx8->supplies);
|
|
err_clk:
|
|
clk_disable_unprepare(cs42xx8->clk);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int cs42xx8_runtime_suspend(struct device *dev)
|
|
{
|
|
struct cs42xx8_priv *cs42xx8 = dev_get_drvdata(dev);
|
|
|
|
regcache_cache_only(cs42xx8->regmap, true);
|
|
|
|
regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies),
|
|
cs42xx8->supplies);
|
|
|
|
gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 1);
|
|
|
|
clk_disable_unprepare(cs42xx8->clk);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
const struct dev_pm_ops cs42xx8_pm = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
|
|
pm_runtime_force_resume)
|
|
SET_RUNTIME_PM_OPS(cs42xx8_runtime_suspend, cs42xx8_runtime_resume, NULL)
|
|
};
|
|
EXPORT_SYMBOL_GPL(cs42xx8_pm);
|
|
|
|
MODULE_DESCRIPTION("Cirrus Logic CS42448/CS42888 ALSA SoC Codec Driver");
|
|
MODULE_AUTHOR("Freescale Semiconductor, Inc.");
|
|
MODULE_LICENSE("GPL");
|