917 lines
26 KiB
C
917 lines
26 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* PCM3168A codec driver
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*
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* Copyright (C) 2015 Imagination Technologies Ltd.
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*
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* Author: Damien Horsley <Damien.Horsley@imgtec.com>
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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/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/of_gpio.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 "pcm3168a.h"
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#define PCM3168A_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
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SNDRV_PCM_FMTBIT_S24_3LE | \
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SNDRV_PCM_FMTBIT_S24_LE)
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#define PCM3168A_FMT_I2S 0x0
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#define PCM3168A_FMT_LEFT_J 0x1
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#define PCM3168A_FMT_RIGHT_J 0x2
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#define PCM3168A_FMT_RIGHT_J_16 0x3
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#define PCM3168A_FMT_DSP_A 0x4
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#define PCM3168A_FMT_DSP_B 0x5
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#define PCM3168A_FMT_I2S_TDM 0x6
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#define PCM3168A_FMT_LEFT_J_TDM 0x7
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static const char *const pcm3168a_supply_names[] = {
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"VDD1",
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"VDD2",
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"VCCAD1",
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"VCCAD2",
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"VCCDA1",
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"VCCDA2"
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};
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#define PCM3168A_DAI_DAC 0
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#define PCM3168A_DAI_ADC 1
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/* ADC/DAC side parameters */
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struct pcm3168a_io_params {
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bool provider_mode;
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unsigned int format;
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int tdm_slots;
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u32 tdm_mask;
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int slot_width;
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};
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struct pcm3168a_priv {
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struct regulator_bulk_data supplies[ARRAY_SIZE(pcm3168a_supply_names)];
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struct regmap *regmap;
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struct clk *scki;
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struct gpio_desc *gpio_rst;
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unsigned long sysclk;
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struct pcm3168a_io_params io_params[2];
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struct snd_soc_dai_driver dai_drv[2];
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};
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static const char *const pcm3168a_roll_off[] = { "Sharp", "Slow" };
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static SOC_ENUM_SINGLE_DECL(pcm3168a_d1_roll_off, PCM3168A_DAC_OP_FLT,
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PCM3168A_DAC_FLT_SHIFT, pcm3168a_roll_off);
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static SOC_ENUM_SINGLE_DECL(pcm3168a_d2_roll_off, PCM3168A_DAC_OP_FLT,
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PCM3168A_DAC_FLT_SHIFT + 1, pcm3168a_roll_off);
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static SOC_ENUM_SINGLE_DECL(pcm3168a_d3_roll_off, PCM3168A_DAC_OP_FLT,
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PCM3168A_DAC_FLT_SHIFT + 2, pcm3168a_roll_off);
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static SOC_ENUM_SINGLE_DECL(pcm3168a_d4_roll_off, PCM3168A_DAC_OP_FLT,
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PCM3168A_DAC_FLT_SHIFT + 3, pcm3168a_roll_off);
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static const char *const pcm3168a_volume_type[] = {
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"Individual", "Master + Individual" };
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static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_volume_type, PCM3168A_DAC_ATT_DEMP_ZF,
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PCM3168A_DAC_ATMDDA_SHIFT, pcm3168a_volume_type);
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static const char *const pcm3168a_att_speed_mult[] = { "2048", "4096" };
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static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_att_mult, PCM3168A_DAC_ATT_DEMP_ZF,
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PCM3168A_DAC_ATSPDA_SHIFT, pcm3168a_att_speed_mult);
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static const char *const pcm3168a_demp[] = {
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"Disabled", "48khz", "44.1khz", "32khz" };
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static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_demp, PCM3168A_DAC_ATT_DEMP_ZF,
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PCM3168A_DAC_DEMP_SHIFT, pcm3168a_demp);
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static const char *const pcm3168a_zf_func[] = {
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"DAC 1/2/3/4 AND", "DAC 1/2/3/4 OR", "DAC 1/2/3 AND",
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"DAC 1/2/3 OR", "DAC 4 AND", "DAC 4 OR" };
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static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_zf_func, PCM3168A_DAC_ATT_DEMP_ZF,
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PCM3168A_DAC_AZRO_SHIFT, pcm3168a_zf_func);
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static const char *const pcm3168a_pol[] = { "Active High", "Active Low" };
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static SOC_ENUM_SINGLE_DECL(pcm3168a_dac_zf_pol, PCM3168A_DAC_ATT_DEMP_ZF,
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PCM3168A_DAC_ATSPDA_SHIFT, pcm3168a_pol);
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static const char *const pcm3168a_con[] = { "Differential", "Single-Ended" };
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static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc1_con, PCM3168A_ADC_SEAD,
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0, 1, pcm3168a_con);
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static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc2_con, PCM3168A_ADC_SEAD,
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2, 3, pcm3168a_con);
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static SOC_ENUM_DOUBLE_DECL(pcm3168a_adc3_con, PCM3168A_ADC_SEAD,
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4, 5, pcm3168a_con);
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static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_volume_type, PCM3168A_ADC_ATT_OVF,
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PCM3168A_ADC_ATMDAD_SHIFT, pcm3168a_volume_type);
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static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_att_mult, PCM3168A_ADC_ATT_OVF,
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PCM3168A_ADC_ATSPAD_SHIFT, pcm3168a_att_speed_mult);
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static SOC_ENUM_SINGLE_DECL(pcm3168a_adc_ov_pol, PCM3168A_ADC_ATT_OVF,
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PCM3168A_ADC_OVFP_SHIFT, pcm3168a_pol);
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/* -100db to 0db, register values 0-54 cause mute */
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static const DECLARE_TLV_DB_SCALE(pcm3168a_dac_tlv, -10050, 50, 1);
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/* -100db to 20db, register values 0-14 cause mute */
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static const DECLARE_TLV_DB_SCALE(pcm3168a_adc_tlv, -10050, 50, 1);
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static const struct snd_kcontrol_new pcm3168a_snd_controls[] = {
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SOC_SINGLE("DAC Power-Save Switch", PCM3168A_DAC_PWR_MST_FMT,
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PCM3168A_DAC_PSMDA_SHIFT, 1, 1),
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SOC_ENUM("DAC1 Digital Filter roll-off", pcm3168a_d1_roll_off),
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SOC_ENUM("DAC2 Digital Filter roll-off", pcm3168a_d2_roll_off),
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SOC_ENUM("DAC3 Digital Filter roll-off", pcm3168a_d3_roll_off),
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SOC_ENUM("DAC4 Digital Filter roll-off", pcm3168a_d4_roll_off),
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SOC_DOUBLE("DAC1 Invert Switch", PCM3168A_DAC_INV, 0, 1, 1, 0),
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SOC_DOUBLE("DAC2 Invert Switch", PCM3168A_DAC_INV, 2, 3, 1, 0),
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SOC_DOUBLE("DAC3 Invert Switch", PCM3168A_DAC_INV, 4, 5, 1, 0),
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SOC_DOUBLE("DAC4 Invert Switch", PCM3168A_DAC_INV, 6, 7, 1, 0),
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SOC_ENUM("DAC Volume Control Type", pcm3168a_dac_volume_type),
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SOC_ENUM("DAC Volume Rate Multiplier", pcm3168a_dac_att_mult),
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SOC_ENUM("DAC De-Emphasis", pcm3168a_dac_demp),
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SOC_ENUM("DAC Zero Flag Function", pcm3168a_dac_zf_func),
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SOC_ENUM("DAC Zero Flag Polarity", pcm3168a_dac_zf_pol),
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SOC_SINGLE_RANGE_TLV("Master Playback Volume",
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PCM3168A_DAC_VOL_MASTER, 0, 54, 255, 0,
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pcm3168a_dac_tlv),
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SOC_DOUBLE_R_RANGE_TLV("DAC1 Playback Volume",
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PCM3168A_DAC_VOL_CHAN_START,
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PCM3168A_DAC_VOL_CHAN_START + 1,
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0, 54, 255, 0, pcm3168a_dac_tlv),
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SOC_DOUBLE_R_RANGE_TLV("DAC2 Playback Volume",
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PCM3168A_DAC_VOL_CHAN_START + 2,
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PCM3168A_DAC_VOL_CHAN_START + 3,
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0, 54, 255, 0, pcm3168a_dac_tlv),
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SOC_DOUBLE_R_RANGE_TLV("DAC3 Playback Volume",
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PCM3168A_DAC_VOL_CHAN_START + 4,
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PCM3168A_DAC_VOL_CHAN_START + 5,
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0, 54, 255, 0, pcm3168a_dac_tlv),
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SOC_DOUBLE_R_RANGE_TLV("DAC4 Playback Volume",
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PCM3168A_DAC_VOL_CHAN_START + 6,
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PCM3168A_DAC_VOL_CHAN_START + 7,
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0, 54, 255, 0, pcm3168a_dac_tlv),
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SOC_SINGLE("ADC1 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
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PCM3168A_ADC_BYP_SHIFT, 1, 1),
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SOC_SINGLE("ADC2 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
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PCM3168A_ADC_BYP_SHIFT + 1, 1, 1),
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SOC_SINGLE("ADC3 High-Pass Filter Switch", PCM3168A_ADC_PWR_HPFB,
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PCM3168A_ADC_BYP_SHIFT + 2, 1, 1),
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SOC_ENUM("ADC1 Connection Type", pcm3168a_adc1_con),
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SOC_ENUM("ADC2 Connection Type", pcm3168a_adc2_con),
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SOC_ENUM("ADC3 Connection Type", pcm3168a_adc3_con),
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SOC_DOUBLE("ADC1 Invert Switch", PCM3168A_ADC_INV, 0, 1, 1, 0),
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SOC_DOUBLE("ADC2 Invert Switch", PCM3168A_ADC_INV, 2, 3, 1, 0),
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SOC_DOUBLE("ADC3 Invert Switch", PCM3168A_ADC_INV, 4, 5, 1, 0),
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SOC_DOUBLE("ADC1 Mute Switch", PCM3168A_ADC_MUTE, 0, 1, 1, 0),
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SOC_DOUBLE("ADC2 Mute Switch", PCM3168A_ADC_MUTE, 2, 3, 1, 0),
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SOC_DOUBLE("ADC3 Mute Switch", PCM3168A_ADC_MUTE, 4, 5, 1, 0),
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SOC_ENUM("ADC Volume Control Type", pcm3168a_adc_volume_type),
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SOC_ENUM("ADC Volume Rate Multiplier", pcm3168a_adc_att_mult),
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SOC_ENUM("ADC Overflow Flag Polarity", pcm3168a_adc_ov_pol),
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SOC_SINGLE_RANGE_TLV("Master Capture Volume",
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PCM3168A_ADC_VOL_MASTER, 0, 14, 255, 0,
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pcm3168a_adc_tlv),
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SOC_DOUBLE_R_RANGE_TLV("ADC1 Capture Volume",
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PCM3168A_ADC_VOL_CHAN_START,
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PCM3168A_ADC_VOL_CHAN_START + 1,
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0, 14, 255, 0, pcm3168a_adc_tlv),
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SOC_DOUBLE_R_RANGE_TLV("ADC2 Capture Volume",
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PCM3168A_ADC_VOL_CHAN_START + 2,
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PCM3168A_ADC_VOL_CHAN_START + 3,
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0, 14, 255, 0, pcm3168a_adc_tlv),
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SOC_DOUBLE_R_RANGE_TLV("ADC3 Capture Volume",
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PCM3168A_ADC_VOL_CHAN_START + 4,
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PCM3168A_ADC_VOL_CHAN_START + 5,
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0, 14, 255, 0, pcm3168a_adc_tlv)
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};
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static const struct snd_soc_dapm_widget pcm3168a_dapm_widgets[] = {
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SND_SOC_DAPM_DAC("DAC1", "Playback", PCM3168A_DAC_OP_FLT,
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PCM3168A_DAC_OPEDA_SHIFT, 1),
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SND_SOC_DAPM_DAC("DAC2", "Playback", PCM3168A_DAC_OP_FLT,
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PCM3168A_DAC_OPEDA_SHIFT + 1, 1),
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SND_SOC_DAPM_DAC("DAC3", "Playback", PCM3168A_DAC_OP_FLT,
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PCM3168A_DAC_OPEDA_SHIFT + 2, 1),
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SND_SOC_DAPM_DAC("DAC4", "Playback", PCM3168A_DAC_OP_FLT,
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PCM3168A_DAC_OPEDA_SHIFT + 3, 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", PCM3168A_ADC_PWR_HPFB,
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PCM3168A_ADC_PSVAD_SHIFT, 1),
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SND_SOC_DAPM_ADC("ADC2", "Capture", PCM3168A_ADC_PWR_HPFB,
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PCM3168A_ADC_PSVAD_SHIFT + 1, 1),
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SND_SOC_DAPM_ADC("ADC3", "Capture", PCM3168A_ADC_PWR_HPFB,
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PCM3168A_ADC_PSVAD_SHIFT + 2, 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_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 pcm3168a_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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{ "AOUT2L", NULL, "DAC2" },
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{ "AOUT2R", NULL, "DAC2" },
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{ "AOUT3L", NULL, "DAC3" },
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{ "AOUT3R", NULL, "DAC3" },
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{ "AOUT4L", NULL, "DAC4" },
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{ "AOUT4R", NULL, "DAC4" },
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/* Capture */
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{ "ADC1", NULL, "AIN1L" },
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{ "ADC1", NULL, "AIN1R" },
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{ "ADC2", NULL, "AIN2L" },
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{ "ADC2", NULL, "AIN2R" },
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{ "ADC3", NULL, "AIN3L" },
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{ "ADC3", NULL, "AIN3R" }
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};
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static unsigned int pcm3168a_scki_ratios[] = {
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768,
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512,
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384,
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256,
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192,
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128
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};
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#define PCM3168A_NUM_SCKI_RATIOS_DAC ARRAY_SIZE(pcm3168a_scki_ratios)
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#define PCM3168A_NUM_SCKI_RATIOS_ADC (ARRAY_SIZE(pcm3168a_scki_ratios) - 2)
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#define PCM3168A_MAX_SYSCLK 36864000
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static int pcm3168a_reset(struct pcm3168a_priv *pcm3168a)
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{
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int ret;
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ret = regmap_write(pcm3168a->regmap, PCM3168A_RST_SMODE, 0);
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if (ret)
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return ret;
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/* Internal reset is de-asserted after 3846 SCKI cycles */
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msleep(DIV_ROUND_UP(3846 * 1000, pcm3168a->sysclk));
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return regmap_write(pcm3168a->regmap, PCM3168A_RST_SMODE,
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PCM3168A_MRST_MASK | PCM3168A_SRST_MASK);
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}
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static int pcm3168a_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 pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
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regmap_write(pcm3168a->regmap, PCM3168A_DAC_MUTE, mute ? 0xff : 0);
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return 0;
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}
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static int pcm3168a_set_dai_sysclk(struct snd_soc_dai *dai,
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int clk_id, unsigned int freq, int dir)
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{
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struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(dai->component);
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int ret;
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/*
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* Some sound card sets 0 Hz as reset,
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* but it is impossible to set. Ignore it here
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*/
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if (freq == 0)
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return 0;
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if (freq > PCM3168A_MAX_SYSCLK)
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return -EINVAL;
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ret = clk_set_rate(pcm3168a->scki, freq);
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if (ret)
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return ret;
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pcm3168a->sysclk = freq;
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return 0;
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}
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static void pcm3168a_update_fixup_pcm_stream(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 pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
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struct pcm3168a_io_params *io_params = &pcm3168a->io_params[dai->id];
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u64 formats = SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_LE;
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unsigned int channel_max = dai->id == PCM3168A_DAI_DAC ? 8 : 6;
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if (io_params->format == SND_SOC_DAIFMT_RIGHT_J) {
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/* S16_LE is only supported in RIGHT_J mode */
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formats |= SNDRV_PCM_FMTBIT_S16_LE;
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/*
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* If multi DIN/DOUT is not selected, RIGHT_J can only support
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* two channels (no TDM support)
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*/
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if (io_params->tdm_slots != 2)
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channel_max = 2;
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}
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if (dai->id == PCM3168A_DAI_DAC) {
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dai->driver->playback.channels_max = channel_max;
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dai->driver->playback.formats = formats;
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} else {
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dai->driver->capture.channels_max = channel_max;
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dai->driver->capture.formats = formats;
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}
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}
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static int pcm3168a_set_dai_fmt(struct snd_soc_dai *dai, unsigned int format)
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{
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struct snd_soc_component *component = dai->component;
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struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
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struct pcm3168a_io_params *io_params = &pcm3168a->io_params[dai->id];
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bool provider_mode;
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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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case SND_SOC_DAIFMT_I2S:
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case SND_SOC_DAIFMT_RIGHT_J:
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case SND_SOC_DAIFMT_DSP_A:
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case SND_SOC_DAIFMT_DSP_B:
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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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switch (format & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
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case SND_SOC_DAIFMT_CBC_CFC:
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provider_mode = false;
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break;
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case SND_SOC_DAIFMT_CBP_CFP:
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provider_mode = true;
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break;
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default:
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dev_err(component->dev, "unsupported provider mode\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (format & SND_SOC_DAIFMT_INV_MASK) {
|
|
case SND_SOC_DAIFMT_NB_NF:
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
io_params->provider_mode = provider_mode;
|
|
io_params->format = format & SND_SOC_DAIFMT_FORMAT_MASK;
|
|
|
|
pcm3168a_update_fixup_pcm_stream(dai);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pcm3168a_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
|
|
unsigned int rx_mask, int slots,
|
|
int slot_width)
|
|
{
|
|
struct snd_soc_component *component = dai->component;
|
|
struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
|
|
struct pcm3168a_io_params *io_params = &pcm3168a->io_params[dai->id];
|
|
|
|
if (tx_mask >= (1<<slots) || rx_mask >= (1<<slots)) {
|
|
dev_err(component->dev,
|
|
"Bad tdm mask tx: 0x%08x rx: 0x%08x slots %d\n",
|
|
tx_mask, rx_mask, slots);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (slot_width &&
|
|
(slot_width != 16 && slot_width != 24 && slot_width != 32 )) {
|
|
dev_err(component->dev, "Unsupported slot_width %d\n",
|
|
slot_width);
|
|
return -EINVAL;
|
|
}
|
|
|
|
io_params->tdm_slots = slots;
|
|
io_params->slot_width = slot_width;
|
|
/* Ignore the not relevant mask for the DAI/direction */
|
|
if (dai->id == PCM3168A_DAI_DAC)
|
|
io_params->tdm_mask = tx_mask;
|
|
else
|
|
io_params->tdm_mask = rx_mask;
|
|
|
|
pcm3168a_update_fixup_pcm_stream(dai);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int pcm3168a_hw_params(struct snd_pcm_substream *substream,
|
|
struct snd_pcm_hw_params *params,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct snd_soc_component *component = dai->component;
|
|
struct pcm3168a_priv *pcm3168a = snd_soc_component_get_drvdata(component);
|
|
struct pcm3168a_io_params *io_params = &pcm3168a->io_params[dai->id];
|
|
bool provider_mode, tdm_mode;
|
|
unsigned int format;
|
|
unsigned int reg, mask, ms, ms_shift, fmt, fmt_shift, ratio, tdm_slots;
|
|
int i, num_scki_ratios, slot_width;
|
|
|
|
if (dai->id == PCM3168A_DAI_DAC) {
|
|
num_scki_ratios = PCM3168A_NUM_SCKI_RATIOS_DAC;
|
|
reg = PCM3168A_DAC_PWR_MST_FMT;
|
|
mask = PCM3168A_DAC_MSDA_MASK | PCM3168A_DAC_FMT_MASK;
|
|
ms_shift = PCM3168A_DAC_MSDA_SHIFT;
|
|
fmt_shift = PCM3168A_DAC_FMT_SHIFT;
|
|
} else {
|
|
num_scki_ratios = PCM3168A_NUM_SCKI_RATIOS_ADC;
|
|
reg = PCM3168A_ADC_MST_FMT;
|
|
mask = PCM3168A_ADC_MSAD_MASK | PCM3168A_ADC_FMTAD_MASK;
|
|
ms_shift = PCM3168A_ADC_MSAD_SHIFT;
|
|
fmt_shift = PCM3168A_ADC_FMTAD_SHIFT;
|
|
}
|
|
|
|
provider_mode = io_params->provider_mode;
|
|
|
|
if (provider_mode) {
|
|
ratio = pcm3168a->sysclk / params_rate(params);
|
|
|
|
for (i = 0; i < num_scki_ratios; i++) {
|
|
if (pcm3168a_scki_ratios[i] == ratio)
|
|
break;
|
|
}
|
|
|
|
if (i == num_scki_ratios) {
|
|
dev_err(component->dev, "unsupported sysclk ratio\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ms = (i + 1);
|
|
} else {
|
|
ms = 0;
|
|
}
|
|
|
|
format = io_params->format;
|
|
|
|
if (io_params->slot_width)
|
|
slot_width = io_params->slot_width;
|
|
else
|
|
slot_width = params_width(params);
|
|
|
|
switch (slot_width) {
|
|
case 16:
|
|
if (provider_mode || (format != SND_SOC_DAIFMT_RIGHT_J)) {
|
|
dev_err(component->dev, "16-bit slots are supported only for consumer mode using right justified\n");
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
case 24:
|
|
if (provider_mode || (format == SND_SOC_DAIFMT_DSP_A) ||
|
|
(format == SND_SOC_DAIFMT_DSP_B)) {
|
|
dev_err(component->dev, "24-bit slots not supported in provider mode, or consumer mode using DSP\n");
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
case 32:
|
|
break;
|
|
default:
|
|
dev_err(component->dev, "unsupported frame size: %d\n", slot_width);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (io_params->tdm_slots)
|
|
tdm_slots = io_params->tdm_slots;
|
|
else
|
|
tdm_slots = params_channels(params);
|
|
|
|
/*
|
|
* Switch the codec to TDM mode when more than 2 TDM slots are needed
|
|
* for the stream.
|
|
* If pcm3168a->tdm_slots is not set or set to more than 2 (8/6 usually)
|
|
* then DIN1/DOUT1 is used in TDM mode.
|
|
* If pcm3168a->tdm_slots is set to 2 then DIN1/2/3/4 and DOUT1/2/3 is
|
|
* used in normal mode, no need to switch to TDM modes.
|
|
*/
|
|
tdm_mode = (tdm_slots > 2);
|
|
|
|
if (tdm_mode) {
|
|
switch (format) {
|
|
case SND_SOC_DAIFMT_I2S:
|
|
case SND_SOC_DAIFMT_DSP_A:
|
|
case SND_SOC_DAIFMT_LEFT_J:
|
|
case SND_SOC_DAIFMT_DSP_B:
|
|
break;
|
|
default:
|
|
dev_err(component->dev,
|
|
"TDM is supported under DSP/I2S/Left_J only\n");
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
switch (format) {
|
|
case SND_SOC_DAIFMT_I2S:
|
|
fmt = tdm_mode ? PCM3168A_FMT_I2S_TDM : PCM3168A_FMT_I2S;
|
|
break;
|
|
case SND_SOC_DAIFMT_LEFT_J:
|
|
fmt = tdm_mode ? PCM3168A_FMT_LEFT_J_TDM : PCM3168A_FMT_LEFT_J;
|
|
break;
|
|
case SND_SOC_DAIFMT_RIGHT_J:
|
|
fmt = (slot_width == 16) ? PCM3168A_FMT_RIGHT_J_16 :
|
|
PCM3168A_FMT_RIGHT_J;
|
|
break;
|
|
case SND_SOC_DAIFMT_DSP_A:
|
|
fmt = tdm_mode ? PCM3168A_FMT_I2S_TDM : PCM3168A_FMT_DSP_A;
|
|
break;
|
|
case SND_SOC_DAIFMT_DSP_B:
|
|
fmt = tdm_mode ? PCM3168A_FMT_LEFT_J_TDM : PCM3168A_FMT_DSP_B;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
regmap_update_bits(pcm3168a->regmap, reg, mask,
|
|
(ms << ms_shift) | (fmt << fmt_shift));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static u64 pcm3168a_dai_formats[] = {
|
|
/*
|
|
* Select below from Sound Card, not here
|
|
* SND_SOC_DAIFMT_CBC_CFC
|
|
* SND_SOC_DAIFMT_CBP_CFP
|
|
*/
|
|
|
|
/*
|
|
* First Priority
|
|
*/
|
|
SND_SOC_POSSIBLE_DAIFMT_I2S |
|
|
SND_SOC_POSSIBLE_DAIFMT_LEFT_J,
|
|
/*
|
|
* Second Priority
|
|
*
|
|
* These have picky limitation.
|
|
* see
|
|
* pcm3168a_hw_params()
|
|
*/
|
|
SND_SOC_POSSIBLE_DAIFMT_RIGHT_J |
|
|
SND_SOC_POSSIBLE_DAIFMT_DSP_A |
|
|
SND_SOC_POSSIBLE_DAIFMT_DSP_B,
|
|
};
|
|
|
|
static const struct snd_soc_dai_ops pcm3168a_dai_ops = {
|
|
.set_fmt = pcm3168a_set_dai_fmt,
|
|
.set_sysclk = pcm3168a_set_dai_sysclk,
|
|
.hw_params = pcm3168a_hw_params,
|
|
.mute_stream = pcm3168a_mute,
|
|
.set_tdm_slot = pcm3168a_set_tdm_slot,
|
|
.no_capture_mute = 1,
|
|
.auto_selectable_formats = pcm3168a_dai_formats,
|
|
.num_auto_selectable_formats = ARRAY_SIZE(pcm3168a_dai_formats),
|
|
};
|
|
|
|
static struct snd_soc_dai_driver pcm3168a_dais[] = {
|
|
{
|
|
.name = "pcm3168a-dac",
|
|
.id = PCM3168A_DAI_DAC,
|
|
.playback = {
|
|
.stream_name = "Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 8,
|
|
.rates = SNDRV_PCM_RATE_8000_192000,
|
|
.formats = PCM3168A_FORMATS
|
|
},
|
|
.ops = &pcm3168a_dai_ops
|
|
},
|
|
{
|
|
.name = "pcm3168a-adc",
|
|
.id = PCM3168A_DAI_ADC,
|
|
.capture = {
|
|
.stream_name = "Capture",
|
|
.channels_min = 1,
|
|
.channels_max = 6,
|
|
.rates = SNDRV_PCM_RATE_8000_96000,
|
|
.formats = PCM3168A_FORMATS
|
|
},
|
|
.ops = &pcm3168a_dai_ops
|
|
},
|
|
};
|
|
|
|
static const struct reg_default pcm3168a_reg_default[] = {
|
|
{ PCM3168A_RST_SMODE, PCM3168A_MRST_MASK | PCM3168A_SRST_MASK },
|
|
{ PCM3168A_DAC_PWR_MST_FMT, 0x00 },
|
|
{ PCM3168A_DAC_OP_FLT, 0x00 },
|
|
{ PCM3168A_DAC_INV, 0x00 },
|
|
{ PCM3168A_DAC_MUTE, 0x00 },
|
|
{ PCM3168A_DAC_ZERO, 0x00 },
|
|
{ PCM3168A_DAC_ATT_DEMP_ZF, 0x00 },
|
|
{ PCM3168A_DAC_VOL_MASTER, 0xff },
|
|
{ PCM3168A_DAC_VOL_CHAN_START, 0xff },
|
|
{ PCM3168A_DAC_VOL_CHAN_START + 1, 0xff },
|
|
{ PCM3168A_DAC_VOL_CHAN_START + 2, 0xff },
|
|
{ PCM3168A_DAC_VOL_CHAN_START + 3, 0xff },
|
|
{ PCM3168A_DAC_VOL_CHAN_START + 4, 0xff },
|
|
{ PCM3168A_DAC_VOL_CHAN_START + 5, 0xff },
|
|
{ PCM3168A_DAC_VOL_CHAN_START + 6, 0xff },
|
|
{ PCM3168A_DAC_VOL_CHAN_START + 7, 0xff },
|
|
{ PCM3168A_ADC_SMODE, 0x00 },
|
|
{ PCM3168A_ADC_MST_FMT, 0x00 },
|
|
{ PCM3168A_ADC_PWR_HPFB, 0x00 },
|
|
{ PCM3168A_ADC_SEAD, 0x00 },
|
|
{ PCM3168A_ADC_INV, 0x00 },
|
|
{ PCM3168A_ADC_MUTE, 0x00 },
|
|
{ PCM3168A_ADC_OV, 0x00 },
|
|
{ PCM3168A_ADC_ATT_OVF, 0x00 },
|
|
{ PCM3168A_ADC_VOL_MASTER, 0xd3 },
|
|
{ PCM3168A_ADC_VOL_CHAN_START, 0xd3 },
|
|
{ PCM3168A_ADC_VOL_CHAN_START + 1, 0xd3 },
|
|
{ PCM3168A_ADC_VOL_CHAN_START + 2, 0xd3 },
|
|
{ PCM3168A_ADC_VOL_CHAN_START + 3, 0xd3 },
|
|
{ PCM3168A_ADC_VOL_CHAN_START + 4, 0xd3 },
|
|
{ PCM3168A_ADC_VOL_CHAN_START + 5, 0xd3 }
|
|
};
|
|
|
|
static bool pcm3168a_readable_register(struct device *dev, unsigned int reg)
|
|
{
|
|
if (reg >= PCM3168A_RST_SMODE)
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
static bool pcm3168a_volatile_register(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case PCM3168A_RST_SMODE:
|
|
case PCM3168A_DAC_ZERO:
|
|
case PCM3168A_ADC_OV:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool pcm3168a_writeable_register(struct device *dev, unsigned int reg)
|
|
{
|
|
if (reg < PCM3168A_RST_SMODE)
|
|
return false;
|
|
|
|
switch (reg) {
|
|
case PCM3168A_DAC_ZERO:
|
|
case PCM3168A_ADC_OV:
|
|
return false;
|
|
default:
|
|
return true;
|
|
}
|
|
}
|
|
|
|
const struct regmap_config pcm3168a_regmap = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
|
|
.max_register = PCM3168A_ADC_VOL_CHAN_START + 5,
|
|
.reg_defaults = pcm3168a_reg_default,
|
|
.num_reg_defaults = ARRAY_SIZE(pcm3168a_reg_default),
|
|
.readable_reg = pcm3168a_readable_register,
|
|
.volatile_reg = pcm3168a_volatile_register,
|
|
.writeable_reg = pcm3168a_writeable_register,
|
|
.cache_type = REGCACHE_FLAT
|
|
};
|
|
EXPORT_SYMBOL_GPL(pcm3168a_regmap);
|
|
|
|
static const struct snd_soc_component_driver pcm3168a_driver = {
|
|
.controls = pcm3168a_snd_controls,
|
|
.num_controls = ARRAY_SIZE(pcm3168a_snd_controls),
|
|
.dapm_widgets = pcm3168a_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(pcm3168a_dapm_widgets),
|
|
.dapm_routes = pcm3168a_dapm_routes,
|
|
.num_dapm_routes = ARRAY_SIZE(pcm3168a_dapm_routes),
|
|
.use_pmdown_time = 1,
|
|
.endianness = 1,
|
|
.non_legacy_dai_naming = 1,
|
|
};
|
|
|
|
int pcm3168a_probe(struct device *dev, struct regmap *regmap)
|
|
{
|
|
struct pcm3168a_priv *pcm3168a;
|
|
int ret, i;
|
|
|
|
pcm3168a = devm_kzalloc(dev, sizeof(*pcm3168a), GFP_KERNEL);
|
|
if (pcm3168a == NULL)
|
|
return -ENOMEM;
|
|
|
|
dev_set_drvdata(dev, pcm3168a);
|
|
|
|
/*
|
|
* Request the reset (connected to RST pin) gpio line as non exclusive
|
|
* as the same reset line might be connected to multiple pcm3168a codec
|
|
*
|
|
* The RST is low active, we want the GPIO line to be high initially, so
|
|
* request the initial level to LOW which in practice means DEASSERTED:
|
|
* The deasserted level of GPIO_ACTIVE_LOW is HIGH.
|
|
*/
|
|
pcm3168a->gpio_rst = devm_gpiod_get_optional(dev, "reset",
|
|
GPIOD_OUT_LOW |
|
|
GPIOD_FLAGS_BIT_NONEXCLUSIVE);
|
|
if (IS_ERR(pcm3168a->gpio_rst))
|
|
return dev_err_probe(dev, PTR_ERR(pcm3168a->gpio_rst),
|
|
"failed to acquire RST gpio\n");
|
|
|
|
pcm3168a->scki = devm_clk_get(dev, "scki");
|
|
if (IS_ERR(pcm3168a->scki))
|
|
return dev_err_probe(dev, PTR_ERR(pcm3168a->scki),
|
|
"failed to acquire clock 'scki'\n");
|
|
|
|
ret = clk_prepare_enable(pcm3168a->scki);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to enable mclk: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
pcm3168a->sysclk = clk_get_rate(pcm3168a->scki);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(pcm3168a->supplies); i++)
|
|
pcm3168a->supplies[i].supply = pcm3168a_supply_names[i];
|
|
|
|
ret = devm_regulator_bulk_get(dev,
|
|
ARRAY_SIZE(pcm3168a->supplies), pcm3168a->supplies);
|
|
if (ret) {
|
|
dev_err_probe(dev, ret, "failed to request supplies\n");
|
|
goto err_clk;
|
|
}
|
|
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(pcm3168a->supplies),
|
|
pcm3168a->supplies);
|
|
if (ret) {
|
|
dev_err(dev, "failed to enable supplies: %d\n", ret);
|
|
goto err_clk;
|
|
}
|
|
|
|
pcm3168a->regmap = regmap;
|
|
if (IS_ERR(pcm3168a->regmap)) {
|
|
ret = PTR_ERR(pcm3168a->regmap);
|
|
dev_err(dev, "failed to allocate regmap: %d\n", ret);
|
|
goto err_regulator;
|
|
}
|
|
|
|
if (pcm3168a->gpio_rst) {
|
|
/*
|
|
* The device is taken out from reset via GPIO line, wait for
|
|
* 3846 SCKI clock cycles for the internal reset de-assertion
|
|
*/
|
|
msleep(DIV_ROUND_UP(3846 * 1000, pcm3168a->sysclk));
|
|
} else {
|
|
ret = pcm3168a_reset(pcm3168a);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to reset device: %d\n", ret);
|
|
goto err_regulator;
|
|
}
|
|
}
|
|
|
|
pm_runtime_set_active(dev);
|
|
pm_runtime_enable(dev);
|
|
pm_runtime_idle(dev);
|
|
|
|
memcpy(pcm3168a->dai_drv, pcm3168a_dais, sizeof(pcm3168a->dai_drv));
|
|
ret = devm_snd_soc_register_component(dev, &pcm3168a_driver,
|
|
pcm3168a->dai_drv,
|
|
ARRAY_SIZE(pcm3168a->dai_drv));
|
|
if (ret) {
|
|
dev_err(dev, "failed to register component: %d\n", ret);
|
|
goto err_regulator;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_regulator:
|
|
regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
|
|
pcm3168a->supplies);
|
|
err_clk:
|
|
clk_disable_unprepare(pcm3168a->scki);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(pcm3168a_probe);
|
|
|
|
static void pcm3168a_disable(struct device *dev)
|
|
{
|
|
struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
|
|
|
|
regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
|
|
pcm3168a->supplies);
|
|
clk_disable_unprepare(pcm3168a->scki);
|
|
}
|
|
|
|
void pcm3168a_remove(struct device *dev)
|
|
{
|
|
struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
|
|
|
|
/*
|
|
* The RST is low active, we want the GPIO line to be low when the
|
|
* driver is removed, so set level to 1 which in practice means
|
|
* ASSERTED:
|
|
* The asserted level of GPIO_ACTIVE_LOW is LOW.
|
|
*/
|
|
gpiod_set_value_cansleep(pcm3168a->gpio_rst, 1);
|
|
pm_runtime_disable(dev);
|
|
#ifndef CONFIG_PM
|
|
pcm3168a_disable(dev);
|
|
#endif
|
|
}
|
|
EXPORT_SYMBOL_GPL(pcm3168a_remove);
|
|
|
|
#ifdef CONFIG_PM
|
|
static int pcm3168a_rt_resume(struct device *dev)
|
|
{
|
|
struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
|
|
int ret;
|
|
|
|
ret = clk_prepare_enable(pcm3168a->scki);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to enable mclk: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = regulator_bulk_enable(ARRAY_SIZE(pcm3168a->supplies),
|
|
pcm3168a->supplies);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to enable supplies: %d\n", ret);
|
|
goto err_clk;
|
|
}
|
|
|
|
ret = pcm3168a_reset(pcm3168a);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to reset device: %d\n", ret);
|
|
goto err_regulator;
|
|
}
|
|
|
|
regcache_cache_only(pcm3168a->regmap, false);
|
|
|
|
regcache_mark_dirty(pcm3168a->regmap);
|
|
|
|
ret = regcache_sync(pcm3168a->regmap);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to sync regmap: %d\n", ret);
|
|
goto err_regulator;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_regulator:
|
|
regulator_bulk_disable(ARRAY_SIZE(pcm3168a->supplies),
|
|
pcm3168a->supplies);
|
|
err_clk:
|
|
clk_disable_unprepare(pcm3168a->scki);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pcm3168a_rt_suspend(struct device *dev)
|
|
{
|
|
struct pcm3168a_priv *pcm3168a = dev_get_drvdata(dev);
|
|
|
|
regcache_cache_only(pcm3168a->regmap, true);
|
|
|
|
pcm3168a_disable(dev);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
const struct dev_pm_ops pcm3168a_pm_ops = {
|
|
SET_RUNTIME_PM_OPS(pcm3168a_rt_suspend, pcm3168a_rt_resume, NULL)
|
|
};
|
|
EXPORT_SYMBOL_GPL(pcm3168a_pm_ops);
|
|
|
|
MODULE_DESCRIPTION("PCM3168A codec driver");
|
|
MODULE_AUTHOR("Damien Horsley <Damien.Horsley@imgtec.com>");
|
|
MODULE_LICENSE("GPL v2");
|