834 lines
22 KiB
C
Executable File
834 lines
22 KiB
C
Executable File
/*
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* SSM2518 amplifier audio driver
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*
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* Copyright 2013 Analog Devices Inc.
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* Author: Lars-Peter Clausen <lars@metafoo.de>
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*
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* Licensed under the GPL-2.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <linux/gpio.h>
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#include <linux/of_gpio.h>
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#include <linux/platform_data/ssm2518.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/initval.h>
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#include <sound/tlv.h>
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#include "ssm2518.h"
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#define SSM2518_REG_POWER1 0x00
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#define SSM2518_REG_CLOCK 0x01
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#define SSM2518_REG_SAI_CTRL1 0x02
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#define SSM2518_REG_SAI_CTRL2 0x03
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#define SSM2518_REG_CHAN_MAP 0x04
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#define SSM2518_REG_LEFT_VOL 0x05
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#define SSM2518_REG_RIGHT_VOL 0x06
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#define SSM2518_REG_MUTE_CTRL 0x07
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#define SSM2518_REG_FAULT_CTRL 0x08
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#define SSM2518_REG_POWER2 0x09
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#define SSM2518_REG_DRC_1 0x0a
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#define SSM2518_REG_DRC_2 0x0b
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#define SSM2518_REG_DRC_3 0x0c
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#define SSM2518_REG_DRC_4 0x0d
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#define SSM2518_REG_DRC_5 0x0e
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#define SSM2518_REG_DRC_6 0x0f
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#define SSM2518_REG_DRC_7 0x10
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#define SSM2518_REG_DRC_8 0x11
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#define SSM2518_REG_DRC_9 0x12
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#define SSM2518_POWER1_RESET BIT(7)
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#define SSM2518_POWER1_NO_BCLK BIT(5)
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#define SSM2518_POWER1_MCS_MASK (0xf << 1)
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#define SSM2518_POWER1_MCS_64FS (0x0 << 1)
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#define SSM2518_POWER1_MCS_128FS (0x1 << 1)
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#define SSM2518_POWER1_MCS_256FS (0x2 << 1)
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#define SSM2518_POWER1_MCS_384FS (0x3 << 1)
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#define SSM2518_POWER1_MCS_512FS (0x4 << 1)
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#define SSM2518_POWER1_MCS_768FS (0x5 << 1)
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#define SSM2518_POWER1_MCS_100FS (0x6 << 1)
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#define SSM2518_POWER1_MCS_200FS (0x7 << 1)
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#define SSM2518_POWER1_MCS_400FS (0x8 << 1)
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#define SSM2518_POWER1_SPWDN BIT(0)
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#define SSM2518_CLOCK_ASR BIT(0)
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#define SSM2518_SAI_CTRL1_FMT_MASK (0x3 << 5)
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#define SSM2518_SAI_CTRL1_FMT_I2S (0x0 << 5)
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#define SSM2518_SAI_CTRL1_FMT_LJ (0x1 << 5)
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#define SSM2518_SAI_CTRL1_FMT_RJ_24BIT (0x2 << 5)
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#define SSM2518_SAI_CTRL1_FMT_RJ_16BIT (0x3 << 5)
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#define SSM2518_SAI_CTRL1_SAI_MASK (0x7 << 2)
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#define SSM2518_SAI_CTRL1_SAI_I2S (0x0 << 2)
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#define SSM2518_SAI_CTRL1_SAI_TDM_2 (0x1 << 2)
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#define SSM2518_SAI_CTRL1_SAI_TDM_4 (0x2 << 2)
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#define SSM2518_SAI_CTRL1_SAI_TDM_8 (0x3 << 2)
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#define SSM2518_SAI_CTRL1_SAI_TDM_16 (0x4 << 2)
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#define SSM2518_SAI_CTRL1_SAI_MONO (0x5 << 2)
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#define SSM2518_SAI_CTRL1_FS_MASK (0x3)
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#define SSM2518_SAI_CTRL1_FS_8000_12000 (0x0)
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#define SSM2518_SAI_CTRL1_FS_16000_24000 (0x1)
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#define SSM2518_SAI_CTRL1_FS_32000_48000 (0x2)
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#define SSM2518_SAI_CTRL1_FS_64000_96000 (0x3)
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#define SSM2518_SAI_CTRL2_BCLK_INTERAL BIT(7)
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#define SSM2518_SAI_CTRL2_LRCLK_PULSE BIT(6)
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#define SSM2518_SAI_CTRL2_LRCLK_INVERT BIT(5)
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#define SSM2518_SAI_CTRL2_MSB BIT(4)
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#define SSM2518_SAI_CTRL2_SLOT_WIDTH_MASK (0x3 << 2)
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#define SSM2518_SAI_CTRL2_SLOT_WIDTH_32 (0x0 << 2)
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#define SSM2518_SAI_CTRL2_SLOT_WIDTH_24 (0x1 << 2)
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#define SSM2518_SAI_CTRL2_SLOT_WIDTH_16 (0x2 << 2)
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#define SSM2518_SAI_CTRL2_BCLK_INVERT BIT(1)
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#define SSM2518_CHAN_MAP_RIGHT_SLOT_OFFSET 4
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#define SSM2518_CHAN_MAP_RIGHT_SLOT_MASK 0xf0
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#define SSM2518_CHAN_MAP_LEFT_SLOT_OFFSET 0
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#define SSM2518_CHAN_MAP_LEFT_SLOT_MASK 0x0f
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#define SSM2518_MUTE_CTRL_ANA_GAIN BIT(5)
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#define SSM2518_MUTE_CTRL_MUTE_MASTER BIT(0)
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#define SSM2518_POWER2_APWDN BIT(0)
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#define SSM2518_DAC_MUTE BIT(6)
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#define SSM2518_DAC_FS_MASK 0x07
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#define SSM2518_DAC_FS_8000 0x00
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#define SSM2518_DAC_FS_16000 0x01
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#define SSM2518_DAC_FS_32000 0x02
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#define SSM2518_DAC_FS_64000 0x03
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#define SSM2518_DAC_FS_128000 0x04
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struct ssm2518 {
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struct regmap *regmap;
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bool right_j;
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unsigned int sysclk;
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const struct snd_pcm_hw_constraint_list *constraints;
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int enable_gpio;
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};
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static const struct reg_default ssm2518_reg_defaults[] = {
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{ 0x00, 0x05 },
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{ 0x01, 0x00 },
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{ 0x02, 0x02 },
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{ 0x03, 0x00 },
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{ 0x04, 0x10 },
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{ 0x05, 0x40 },
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{ 0x06, 0x40 },
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{ 0x07, 0x81 },
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{ 0x08, 0x0c },
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{ 0x09, 0x99 },
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{ 0x0a, 0x7c },
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{ 0x0b, 0x5b },
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{ 0x0c, 0x57 },
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{ 0x0d, 0x89 },
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{ 0x0e, 0x8c },
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{ 0x0f, 0x77 },
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{ 0x10, 0x26 },
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{ 0x11, 0x1c },
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{ 0x12, 0x97 },
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};
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static const DECLARE_TLV_DB_MINMAX_MUTE(ssm2518_vol_tlv, -7125, 2400);
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static const DECLARE_TLV_DB_SCALE(ssm2518_compressor_tlv, -3400, 200, 0);
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static const DECLARE_TLV_DB_SCALE(ssm2518_expander_tlv, -8100, 300, 0);
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static const DECLARE_TLV_DB_SCALE(ssm2518_noise_gate_tlv, -9600, 300, 0);
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static const DECLARE_TLV_DB_SCALE(ssm2518_post_drc_tlv, -2400, 300, 0);
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static const DECLARE_TLV_DB_RANGE(ssm2518_limiter_tlv,
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0, 7, TLV_DB_SCALE_ITEM(-2200, 200, 0),
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7, 15, TLV_DB_SCALE_ITEM(-800, 100, 0),
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);
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static const char * const ssm2518_drc_peak_detector_attack_time_text[] = {
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"0 ms", "0.1 ms", "0.19 ms", "0.37 ms", "0.75 ms", "1.5 ms", "3 ms",
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"6 ms", "12 ms", "24 ms", "48 ms", "96 ms", "192 ms", "384 ms",
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"768 ms", "1536 ms",
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};
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static const char * const ssm2518_drc_peak_detector_release_time_text[] = {
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"0 ms", "1.5 ms", "3 ms", "6 ms", "12 ms", "24 ms", "48 ms", "96 ms",
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"192 ms", "384 ms", "768 ms", "1536 ms", "3072 ms", "6144 ms",
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"12288 ms", "24576 ms"
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};
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static const char * const ssm2518_drc_hold_time_text[] = {
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"0 ms", "0.67 ms", "1.33 ms", "2.67 ms", "5.33 ms", "10.66 ms",
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"21.32 ms", "42.64 ms", "85.28 ms", "170.56 ms", "341.12 ms",
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"682.24 ms", "1364 ms",
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};
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static SOC_ENUM_SINGLE_DECL(ssm2518_drc_peak_detector_attack_time_enum,
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SSM2518_REG_DRC_2, 4, ssm2518_drc_peak_detector_attack_time_text);
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static SOC_ENUM_SINGLE_DECL(ssm2518_drc_peak_detector_release_time_enum,
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SSM2518_REG_DRC_2, 0, ssm2518_drc_peak_detector_release_time_text);
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static SOC_ENUM_SINGLE_DECL(ssm2518_drc_attack_time_enum,
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SSM2518_REG_DRC_6, 4, ssm2518_drc_peak_detector_attack_time_text);
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static SOC_ENUM_SINGLE_DECL(ssm2518_drc_decay_time_enum,
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SSM2518_REG_DRC_6, 0, ssm2518_drc_peak_detector_release_time_text);
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static SOC_ENUM_SINGLE_DECL(ssm2518_drc_hold_time_enum,
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SSM2518_REG_DRC_7, 4, ssm2518_drc_hold_time_text);
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static SOC_ENUM_SINGLE_DECL(ssm2518_drc_noise_gate_hold_time_enum,
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SSM2518_REG_DRC_7, 0, ssm2518_drc_hold_time_text);
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static SOC_ENUM_SINGLE_DECL(ssm2518_drc_rms_averaging_time_enum,
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SSM2518_REG_DRC_9, 0, ssm2518_drc_peak_detector_release_time_text);
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static const struct snd_kcontrol_new ssm2518_snd_controls[] = {
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SOC_SINGLE("Playback De-emphasis Switch", SSM2518_REG_MUTE_CTRL,
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4, 1, 0),
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SOC_DOUBLE_R_TLV("Master Playback Volume", SSM2518_REG_LEFT_VOL,
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SSM2518_REG_RIGHT_VOL, 0, 0xff, 1, ssm2518_vol_tlv),
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SOC_DOUBLE("Master Playback Switch", SSM2518_REG_MUTE_CTRL, 2, 1, 1, 1),
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SOC_SINGLE("Amp Low Power Mode Switch", SSM2518_REG_POWER2, 4, 1, 0),
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SOC_SINGLE("DAC Low Power Mode Switch", SSM2518_REG_POWER2, 3, 1, 0),
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SOC_SINGLE("DRC Limiter Switch", SSM2518_REG_DRC_1, 5, 1, 0),
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SOC_SINGLE("DRC Compressor Switch", SSM2518_REG_DRC_1, 4, 1, 0),
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SOC_SINGLE("DRC Expander Switch", SSM2518_REG_DRC_1, 3, 1, 0),
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SOC_SINGLE("DRC Noise Gate Switch", SSM2518_REG_DRC_1, 2, 1, 0),
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SOC_DOUBLE("DRC Switch", SSM2518_REG_DRC_1, 0, 1, 1, 0),
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SOC_SINGLE_TLV("DRC Limiter Threshold Volume",
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SSM2518_REG_DRC_3, 4, 15, 1, ssm2518_limiter_tlv),
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SOC_SINGLE_TLV("DRC Compressor Lower Threshold Volume",
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SSM2518_REG_DRC_3, 0, 15, 1, ssm2518_compressor_tlv),
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SOC_SINGLE_TLV("DRC Expander Upper Threshold Volume", SSM2518_REG_DRC_4,
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4, 15, 1, ssm2518_expander_tlv),
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SOC_SINGLE_TLV("DRC Noise Gate Threshold Volume",
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SSM2518_REG_DRC_4, 0, 15, 1, ssm2518_noise_gate_tlv),
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SOC_SINGLE_TLV("DRC Upper Output Threshold Volume",
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SSM2518_REG_DRC_5, 4, 15, 1, ssm2518_limiter_tlv),
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SOC_SINGLE_TLV("DRC Lower Output Threshold Volume",
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SSM2518_REG_DRC_5, 0, 15, 1, ssm2518_noise_gate_tlv),
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SOC_SINGLE_TLV("DRC Post Volume", SSM2518_REG_DRC_8,
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2, 15, 1, ssm2518_post_drc_tlv),
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SOC_ENUM("DRC Peak Detector Attack Time",
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ssm2518_drc_peak_detector_attack_time_enum),
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SOC_ENUM("DRC Peak Detector Release Time",
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ssm2518_drc_peak_detector_release_time_enum),
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SOC_ENUM("DRC Attack Time", ssm2518_drc_attack_time_enum),
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SOC_ENUM("DRC Decay Time", ssm2518_drc_decay_time_enum),
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SOC_ENUM("DRC Hold Time", ssm2518_drc_hold_time_enum),
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SOC_ENUM("DRC Noise Gate Hold Time",
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ssm2518_drc_noise_gate_hold_time_enum),
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SOC_ENUM("DRC RMS Averaging Time", ssm2518_drc_rms_averaging_time_enum),
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};
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static const struct snd_soc_dapm_widget ssm2518_dapm_widgets[] = {
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SND_SOC_DAPM_DAC("DACL", "HiFi Playback", SSM2518_REG_POWER2, 1, 1),
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SND_SOC_DAPM_DAC("DACR", "HiFi Playback", SSM2518_REG_POWER2, 2, 1),
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SND_SOC_DAPM_OUTPUT("OUTL"),
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SND_SOC_DAPM_OUTPUT("OUTR"),
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};
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static const struct snd_soc_dapm_route ssm2518_routes[] = {
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{ "OUTL", NULL, "DACL" },
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{ "OUTR", NULL, "DACR" },
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};
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struct ssm2518_mcs_lut {
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unsigned int rate;
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const unsigned int *sysclks;
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};
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static const unsigned int ssm2518_sysclks_2048000[] = {
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2048000, 4096000, 8192000, 12288000, 16384000, 24576000,
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3200000, 6400000, 12800000, 0
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};
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static const unsigned int ssm2518_sysclks_2822000[] = {
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2822000, 5644800, 11289600, 16934400, 22579200, 33868800,
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4410000, 8820000, 17640000, 0
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};
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static const unsigned int ssm2518_sysclks_3072000[] = {
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3072000, 6144000, 12288000, 16384000, 24576000, 38864000,
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4800000, 9600000, 19200000, 0
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};
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static const struct ssm2518_mcs_lut ssm2518_mcs_lut[] = {
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{ 8000, ssm2518_sysclks_2048000, },
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{ 11025, ssm2518_sysclks_2822000, },
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{ 12000, ssm2518_sysclks_3072000, },
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{ 16000, ssm2518_sysclks_2048000, },
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{ 24000, ssm2518_sysclks_3072000, },
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{ 22050, ssm2518_sysclks_2822000, },
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{ 32000, ssm2518_sysclks_2048000, },
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{ 44100, ssm2518_sysclks_2822000, },
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{ 48000, ssm2518_sysclks_3072000, },
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{ 96000, ssm2518_sysclks_3072000, },
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};
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static const unsigned int ssm2518_rates_2048000[] = {
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8000, 16000, 32000,
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};
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static const struct snd_pcm_hw_constraint_list ssm2518_constraints_2048000 = {
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.list = ssm2518_rates_2048000,
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.count = ARRAY_SIZE(ssm2518_rates_2048000),
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};
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static const unsigned int ssm2518_rates_2822000[] = {
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11025, 22050, 44100,
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};
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static const struct snd_pcm_hw_constraint_list ssm2518_constraints_2822000 = {
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.list = ssm2518_rates_2822000,
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.count = ARRAY_SIZE(ssm2518_rates_2822000),
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};
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static const unsigned int ssm2518_rates_3072000[] = {
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12000, 24000, 48000, 96000,
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};
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static const struct snd_pcm_hw_constraint_list ssm2518_constraints_3072000 = {
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.list = ssm2518_rates_3072000,
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.count = ARRAY_SIZE(ssm2518_rates_3072000),
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};
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static const unsigned int ssm2518_rates_12288000[] = {
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8000, 12000, 16000, 24000, 32000, 48000, 96000,
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};
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static const struct snd_pcm_hw_constraint_list ssm2518_constraints_12288000 = {
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.list = ssm2518_rates_12288000,
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.count = ARRAY_SIZE(ssm2518_rates_12288000),
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};
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static unsigned int ssm2518_lookup_mcs(struct ssm2518 *ssm2518,
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unsigned int rate)
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{
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const unsigned int *sysclks = NULL;
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int i;
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for (i = 0; i < ARRAY_SIZE(ssm2518_mcs_lut); i++) {
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if (ssm2518_mcs_lut[i].rate == rate) {
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sysclks = ssm2518_mcs_lut[i].sysclks;
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break;
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}
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}
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if (!sysclks)
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return -EINVAL;
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for (i = 0; sysclks[i]; i++) {
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if (sysclks[i] == ssm2518->sysclk)
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return i;
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}
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return -EINVAL;
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}
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static int ssm2518_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
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{
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struct snd_soc_codec *codec = dai->codec;
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struct ssm2518 *ssm2518 = snd_soc_codec_get_drvdata(codec);
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unsigned int rate = params_rate(params);
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unsigned int ctrl1, ctrl1_mask;
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int mcs;
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int ret;
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mcs = ssm2518_lookup_mcs(ssm2518, rate);
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if (mcs < 0)
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return mcs;
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ctrl1_mask = SSM2518_SAI_CTRL1_FS_MASK;
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if (rate >= 8000 && rate <= 12000)
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ctrl1 = SSM2518_SAI_CTRL1_FS_8000_12000;
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else if (rate >= 16000 && rate <= 24000)
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ctrl1 = SSM2518_SAI_CTRL1_FS_16000_24000;
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else if (rate >= 32000 && rate <= 48000)
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ctrl1 = SSM2518_SAI_CTRL1_FS_32000_48000;
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else if (rate >= 64000 && rate <= 96000)
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ctrl1 = SSM2518_SAI_CTRL1_FS_64000_96000;
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else
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return -EINVAL;
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if (ssm2518->right_j) {
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switch (params_width(params)) {
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case 16:
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ctrl1 |= SSM2518_SAI_CTRL1_FMT_RJ_16BIT;
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break;
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case 24:
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ctrl1 |= SSM2518_SAI_CTRL1_FMT_RJ_24BIT;
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break;
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default:
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return -EINVAL;
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}
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ctrl1_mask |= SSM2518_SAI_CTRL1_FMT_MASK;
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}
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/* Disable auto samplerate detection */
|
|
ret = regmap_update_bits(ssm2518->regmap, SSM2518_REG_CLOCK,
|
|
SSM2518_CLOCK_ASR, SSM2518_CLOCK_ASR);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = regmap_update_bits(ssm2518->regmap, SSM2518_REG_SAI_CTRL1,
|
|
ctrl1_mask, ctrl1);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return regmap_update_bits(ssm2518->regmap, SSM2518_REG_POWER1,
|
|
SSM2518_POWER1_MCS_MASK, mcs << 1);
|
|
}
|
|
|
|
static int ssm2518_mute(struct snd_soc_dai *dai, int mute)
|
|
{
|
|
struct ssm2518 *ssm2518 = snd_soc_codec_get_drvdata(dai->codec);
|
|
unsigned int val;
|
|
|
|
if (mute)
|
|
val = SSM2518_MUTE_CTRL_MUTE_MASTER;
|
|
else
|
|
val = 0;
|
|
|
|
return regmap_update_bits(ssm2518->regmap, SSM2518_REG_MUTE_CTRL,
|
|
SSM2518_MUTE_CTRL_MUTE_MASTER, val);
|
|
}
|
|
|
|
static int ssm2518_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
|
|
{
|
|
struct ssm2518 *ssm2518 = snd_soc_codec_get_drvdata(dai->codec);
|
|
unsigned int ctrl1 = 0, ctrl2 = 0;
|
|
bool invert_fclk;
|
|
int ret;
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
|
|
case SND_SOC_DAIFMT_CBS_CFS:
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
|
|
case SND_SOC_DAIFMT_NB_NF:
|
|
invert_fclk = false;
|
|
break;
|
|
case SND_SOC_DAIFMT_IB_NF:
|
|
ctrl2 |= SSM2518_SAI_CTRL2_BCLK_INVERT;
|
|
invert_fclk = false;
|
|
break;
|
|
case SND_SOC_DAIFMT_NB_IF:
|
|
invert_fclk = true;
|
|
break;
|
|
case SND_SOC_DAIFMT_IB_IF:
|
|
ctrl2 |= SSM2518_SAI_CTRL2_BCLK_INVERT;
|
|
invert_fclk = true;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
ssm2518->right_j = false;
|
|
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
|
|
case SND_SOC_DAIFMT_I2S:
|
|
ctrl1 |= SSM2518_SAI_CTRL1_FMT_I2S;
|
|
break;
|
|
case SND_SOC_DAIFMT_LEFT_J:
|
|
ctrl1 |= SSM2518_SAI_CTRL1_FMT_LJ;
|
|
invert_fclk = !invert_fclk;
|
|
break;
|
|
case SND_SOC_DAIFMT_RIGHT_J:
|
|
ctrl1 |= SSM2518_SAI_CTRL1_FMT_RJ_24BIT;
|
|
ssm2518->right_j = true;
|
|
invert_fclk = !invert_fclk;
|
|
break;
|
|
case SND_SOC_DAIFMT_DSP_A:
|
|
ctrl2 |= SSM2518_SAI_CTRL2_LRCLK_PULSE;
|
|
ctrl1 |= SSM2518_SAI_CTRL1_FMT_I2S;
|
|
invert_fclk = false;
|
|
break;
|
|
case SND_SOC_DAIFMT_DSP_B:
|
|
ctrl2 |= SSM2518_SAI_CTRL2_LRCLK_PULSE;
|
|
ctrl1 |= SSM2518_SAI_CTRL1_FMT_LJ;
|
|
invert_fclk = false;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (invert_fclk)
|
|
ctrl2 |= SSM2518_SAI_CTRL2_LRCLK_INVERT;
|
|
|
|
ret = regmap_write(ssm2518->regmap, SSM2518_REG_SAI_CTRL1, ctrl1);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return regmap_write(ssm2518->regmap, SSM2518_REG_SAI_CTRL2, ctrl2);
|
|
}
|
|
|
|
static int ssm2518_set_power(struct ssm2518 *ssm2518, bool enable)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (!enable) {
|
|
ret = regmap_update_bits(ssm2518->regmap, SSM2518_REG_POWER1,
|
|
SSM2518_POWER1_SPWDN, SSM2518_POWER1_SPWDN);
|
|
regcache_mark_dirty(ssm2518->regmap);
|
|
}
|
|
|
|
if (gpio_is_valid(ssm2518->enable_gpio))
|
|
gpio_set_value(ssm2518->enable_gpio, enable);
|
|
|
|
regcache_cache_only(ssm2518->regmap, !enable);
|
|
|
|
if (enable) {
|
|
ret = regmap_update_bits(ssm2518->regmap, SSM2518_REG_POWER1,
|
|
SSM2518_POWER1_SPWDN | SSM2518_POWER1_RESET, 0x00);
|
|
regcache_sync(ssm2518->regmap);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int ssm2518_set_bias_level(struct snd_soc_codec *codec,
|
|
enum snd_soc_bias_level level)
|
|
{
|
|
struct ssm2518 *ssm2518 = snd_soc_codec_get_drvdata(codec);
|
|
int ret = 0;
|
|
|
|
switch (level) {
|
|
case SND_SOC_BIAS_ON:
|
|
break;
|
|
case SND_SOC_BIAS_PREPARE:
|
|
break;
|
|
case SND_SOC_BIAS_STANDBY:
|
|
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
|
|
ret = ssm2518_set_power(ssm2518, true);
|
|
break;
|
|
case SND_SOC_BIAS_OFF:
|
|
ret = ssm2518_set_power(ssm2518, false);
|
|
break;
|
|
}
|
|
|
|
if (ret)
|
|
return ret;
|
|
|
|
codec->dapm.bias_level = level;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ssm2518_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
|
|
unsigned int rx_mask, int slots, int width)
|
|
{
|
|
struct ssm2518 *ssm2518 = snd_soc_codec_get_drvdata(dai->codec);
|
|
unsigned int ctrl1, ctrl2;
|
|
int left_slot, right_slot;
|
|
int ret;
|
|
|
|
if (slots == 0)
|
|
return regmap_update_bits(ssm2518->regmap,
|
|
SSM2518_REG_SAI_CTRL1, SSM2518_SAI_CTRL1_SAI_MASK,
|
|
SSM2518_SAI_CTRL1_SAI_I2S);
|
|
|
|
if (tx_mask == 0 || rx_mask != 0)
|
|
return -EINVAL;
|
|
|
|
if (slots == 1) {
|
|
if (tx_mask != 1)
|
|
return -EINVAL;
|
|
left_slot = 0;
|
|
right_slot = 0;
|
|
} else {
|
|
/* We assume the left channel < right channel */
|
|
left_slot = __ffs(tx_mask);
|
|
tx_mask &= ~(1 << left_slot);
|
|
if (tx_mask == 0) {
|
|
right_slot = left_slot;
|
|
} else {
|
|
right_slot = __ffs(tx_mask);
|
|
tx_mask &= ~(1 << right_slot);
|
|
}
|
|
}
|
|
|
|
if (tx_mask != 0 || left_slot >= slots || right_slot >= slots)
|
|
return -EINVAL;
|
|
|
|
switch (width) {
|
|
case 16:
|
|
ctrl2 = SSM2518_SAI_CTRL2_SLOT_WIDTH_16;
|
|
break;
|
|
case 24:
|
|
ctrl2 = SSM2518_SAI_CTRL2_SLOT_WIDTH_24;
|
|
break;
|
|
case 32:
|
|
ctrl2 = SSM2518_SAI_CTRL2_SLOT_WIDTH_32;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (slots) {
|
|
case 1:
|
|
ctrl1 = SSM2518_SAI_CTRL1_SAI_MONO;
|
|
break;
|
|
case 2:
|
|
ctrl1 = SSM2518_SAI_CTRL1_SAI_TDM_2;
|
|
break;
|
|
case 4:
|
|
ctrl1 = SSM2518_SAI_CTRL1_SAI_TDM_4;
|
|
break;
|
|
case 8:
|
|
ctrl1 = SSM2518_SAI_CTRL1_SAI_TDM_8;
|
|
break;
|
|
case 16:
|
|
ctrl1 = SSM2518_SAI_CTRL1_SAI_TDM_16;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = regmap_write(ssm2518->regmap, SSM2518_REG_CHAN_MAP,
|
|
(left_slot << SSM2518_CHAN_MAP_LEFT_SLOT_OFFSET) |
|
|
(right_slot << SSM2518_CHAN_MAP_RIGHT_SLOT_OFFSET));
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = regmap_update_bits(ssm2518->regmap, SSM2518_REG_SAI_CTRL1,
|
|
SSM2518_SAI_CTRL1_SAI_MASK, ctrl1);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return regmap_update_bits(ssm2518->regmap, SSM2518_REG_SAI_CTRL2,
|
|
SSM2518_SAI_CTRL2_SLOT_WIDTH_MASK, ctrl2);
|
|
}
|
|
|
|
static int ssm2518_startup(struct snd_pcm_substream *substream,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct ssm2518 *ssm2518 = snd_soc_codec_get_drvdata(dai->codec);
|
|
|
|
if (ssm2518->constraints)
|
|
snd_pcm_hw_constraint_list(substream->runtime, 0,
|
|
SNDRV_PCM_HW_PARAM_RATE, ssm2518->constraints);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define SSM2518_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | \
|
|
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32)
|
|
|
|
static const struct snd_soc_dai_ops ssm2518_dai_ops = {
|
|
.startup = ssm2518_startup,
|
|
.hw_params = ssm2518_hw_params,
|
|
.digital_mute = ssm2518_mute,
|
|
.set_fmt = ssm2518_set_dai_fmt,
|
|
.set_tdm_slot = ssm2518_set_tdm_slot,
|
|
};
|
|
|
|
static struct snd_soc_dai_driver ssm2518_dai = {
|
|
.name = "ssm2518-hifi",
|
|
.playback = {
|
|
.stream_name = "Playback",
|
|
.channels_min = 2,
|
|
.channels_max = 2,
|
|
.rates = SNDRV_PCM_RATE_8000_96000,
|
|
.formats = SSM2518_FORMATS,
|
|
},
|
|
.ops = &ssm2518_dai_ops,
|
|
};
|
|
|
|
static int ssm2518_set_sysclk(struct snd_soc_codec *codec, int clk_id,
|
|
int source, unsigned int freq, int dir)
|
|
{
|
|
struct ssm2518 *ssm2518 = snd_soc_codec_get_drvdata(codec);
|
|
unsigned int val;
|
|
|
|
if (clk_id != SSM2518_SYSCLK)
|
|
return -EINVAL;
|
|
|
|
switch (source) {
|
|
case SSM2518_SYSCLK_SRC_MCLK:
|
|
val = 0;
|
|
break;
|
|
case SSM2518_SYSCLK_SRC_BCLK:
|
|
/* In this case the bitclock is used as the system clock, and
|
|
* the bitclock signal needs to be connected to the MCLK pin and
|
|
* the BCLK pin is left unconnected */
|
|
val = SSM2518_POWER1_NO_BCLK;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
switch (freq) {
|
|
case 0:
|
|
ssm2518->constraints = NULL;
|
|
break;
|
|
case 2048000:
|
|
case 4096000:
|
|
case 8192000:
|
|
case 3200000:
|
|
case 6400000:
|
|
case 12800000:
|
|
ssm2518->constraints = &ssm2518_constraints_2048000;
|
|
break;
|
|
case 2822000:
|
|
case 5644800:
|
|
case 11289600:
|
|
case 16934400:
|
|
case 22579200:
|
|
case 33868800:
|
|
case 4410000:
|
|
case 8820000:
|
|
case 17640000:
|
|
ssm2518->constraints = &ssm2518_constraints_2822000;
|
|
break;
|
|
case 3072000:
|
|
case 6144000:
|
|
case 38864000:
|
|
case 4800000:
|
|
case 9600000:
|
|
case 19200000:
|
|
ssm2518->constraints = &ssm2518_constraints_3072000;
|
|
break;
|
|
case 12288000:
|
|
case 16384000:
|
|
case 24576000:
|
|
ssm2518->constraints = &ssm2518_constraints_12288000;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
ssm2518->sysclk = freq;
|
|
|
|
return regmap_update_bits(ssm2518->regmap, SSM2518_REG_POWER1,
|
|
SSM2518_POWER1_NO_BCLK, val);
|
|
}
|
|
|
|
static struct snd_soc_codec_driver ssm2518_codec_driver = {
|
|
.set_bias_level = ssm2518_set_bias_level,
|
|
.set_sysclk = ssm2518_set_sysclk,
|
|
.idle_bias_off = true,
|
|
|
|
.controls = ssm2518_snd_controls,
|
|
.num_controls = ARRAY_SIZE(ssm2518_snd_controls),
|
|
.dapm_widgets = ssm2518_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(ssm2518_dapm_widgets),
|
|
.dapm_routes = ssm2518_routes,
|
|
.num_dapm_routes = ARRAY_SIZE(ssm2518_routes),
|
|
};
|
|
|
|
static bool ssm2518_register_volatile(struct device *dev, unsigned int reg)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static const struct regmap_config ssm2518_regmap_config = {
|
|
.val_bits = 8,
|
|
.reg_bits = 8,
|
|
|
|
.max_register = SSM2518_REG_DRC_9,
|
|
.volatile_reg = ssm2518_register_volatile,
|
|
|
|
.cache_type = REGCACHE_RBTREE,
|
|
.reg_defaults = ssm2518_reg_defaults,
|
|
.num_reg_defaults = ARRAY_SIZE(ssm2518_reg_defaults),
|
|
};
|
|
|
|
static int ssm2518_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct ssm2518_platform_data *pdata = i2c->dev.platform_data;
|
|
struct ssm2518 *ssm2518;
|
|
int ret;
|
|
|
|
ssm2518 = devm_kzalloc(&i2c->dev, sizeof(*ssm2518), GFP_KERNEL);
|
|
if (ssm2518 == NULL)
|
|
return -ENOMEM;
|
|
|
|
if (pdata) {
|
|
ssm2518->enable_gpio = pdata->enable_gpio;
|
|
} else if (i2c->dev.of_node) {
|
|
ssm2518->enable_gpio = of_get_gpio(i2c->dev.of_node, 0);
|
|
if (ssm2518->enable_gpio < 0 && ssm2518->enable_gpio != -ENOENT)
|
|
return ssm2518->enable_gpio;
|
|
} else {
|
|
ssm2518->enable_gpio = -1;
|
|
}
|
|
|
|
if (gpio_is_valid(ssm2518->enable_gpio)) {
|
|
ret = devm_gpio_request_one(&i2c->dev, ssm2518->enable_gpio,
|
|
GPIOF_OUT_INIT_HIGH, "SSM2518 nSD");
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
i2c_set_clientdata(i2c, ssm2518);
|
|
|
|
ssm2518->regmap = devm_regmap_init_i2c(i2c, &ssm2518_regmap_config);
|
|
if (IS_ERR(ssm2518->regmap))
|
|
return PTR_ERR(ssm2518->regmap);
|
|
|
|
/*
|
|
* The reset bit is obviously volatile, but we need to be able to cache
|
|
* the other bits in the register, so we can't just mark the whole
|
|
* register as volatile. Since this is the only place where we'll ever
|
|
* touch the reset bit just bypass the cache for this operation.
|
|
*/
|
|
regcache_cache_bypass(ssm2518->regmap, true);
|
|
ret = regmap_write(ssm2518->regmap, SSM2518_REG_POWER1,
|
|
SSM2518_POWER1_RESET);
|
|
regcache_cache_bypass(ssm2518->regmap, false);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = regmap_update_bits(ssm2518->regmap, SSM2518_REG_POWER2,
|
|
SSM2518_POWER2_APWDN, 0x00);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = ssm2518_set_power(ssm2518, false);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return snd_soc_register_codec(&i2c->dev, &ssm2518_codec_driver,
|
|
&ssm2518_dai, 1);
|
|
}
|
|
|
|
static int ssm2518_i2c_remove(struct i2c_client *client)
|
|
{
|
|
snd_soc_unregister_codec(&client->dev);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id ssm2518_i2c_ids[] = {
|
|
{ "ssm2518", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, ssm2518_i2c_ids);
|
|
|
|
static struct i2c_driver ssm2518_driver = {
|
|
.driver = {
|
|
.name = "ssm2518",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = ssm2518_i2c_probe,
|
|
.remove = ssm2518_i2c_remove,
|
|
.id_table = ssm2518_i2c_ids,
|
|
};
|
|
module_i2c_driver(ssm2518_driver);
|
|
|
|
MODULE_DESCRIPTION("ASoC SSM2518 driver");
|
|
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
|
|
MODULE_LICENSE("GPL");
|