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333 lines
8.9 KiB
333 lines
8.9 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// |
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// Copyright (c) 2020 BayLibre, SAS. |
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// Author: Jerome Brunet <[email protected]> |
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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/regmap.h> |
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#include <linux/regulator/consumer.h> |
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#include <linux/reset.h> |
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#include <sound/soc.h> |
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#include <sound/tlv.h> |
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#define BLOCK_EN 0x00 |
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#define LORN_EN 0 |
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#define LORP_EN 1 |
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#define LOLN_EN 2 |
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#define LOLP_EN 3 |
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#define DACR_EN 4 |
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#define DACL_EN 5 |
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#define DACR_INV 20 |
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#define DACL_INV 21 |
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#define DACR_SRC 22 |
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#define DACL_SRC 23 |
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#define REFP_BUF_EN BIT(12) |
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#define BIAS_CURRENT_EN BIT(13) |
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#define VMID_GEN_FAST BIT(14) |
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#define VMID_GEN_EN BIT(15) |
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#define I2S_MODE BIT(30) |
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#define VOL_CTRL0 0x04 |
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#define GAIN_H 31 |
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#define GAIN_L 23 |
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#define VOL_CTRL1 0x08 |
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#define DAC_MONO 8 |
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#define RAMP_RATE 10 |
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#define VC_RAMP_MODE 12 |
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#define MUTE_MODE 13 |
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#define UNMUTE_MODE 14 |
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#define DAC_SOFT_MUTE 15 |
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#define DACR_VC 16 |
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#define DACL_VC 24 |
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#define LINEOUT_CFG 0x0c |
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#define LORN_POL 0 |
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#define LORP_POL 4 |
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#define LOLN_POL 8 |
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#define LOLP_POL 12 |
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#define POWER_CFG 0x10 |
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struct t9015 { |
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struct clk *pclk; |
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struct regulator *avdd; |
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}; |
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static int t9015_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) |
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{ |
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struct snd_soc_component *component = dai->component; |
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unsigned int val; |
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
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case SND_SOC_DAIFMT_CBM_CFM: |
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val = I2S_MODE; |
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break; |
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case SND_SOC_DAIFMT_CBS_CFS: |
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val = 0; |
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break; |
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default: |
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return -EINVAL; |
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} |
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snd_soc_component_update_bits(component, BLOCK_EN, I2S_MODE, val); |
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if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_I2S) && |
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((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_LEFT_J)) |
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return -EINVAL; |
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return 0; |
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} |
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static const struct snd_soc_dai_ops t9015_dai_ops = { |
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.set_fmt = t9015_dai_set_fmt, |
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}; |
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static struct snd_soc_dai_driver t9015_dai = { |
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.name = "t9015-hifi", |
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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 = 2, |
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.rates = SNDRV_PCM_RATE_8000_96000, |
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.formats = (SNDRV_PCM_FMTBIT_S8 | |
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SNDRV_PCM_FMTBIT_S16_LE | |
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SNDRV_PCM_FMTBIT_S20_LE | |
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SNDRV_PCM_FMTBIT_S24_LE), |
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}, |
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.ops = &t9015_dai_ops, |
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}; |
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static const DECLARE_TLV_DB_MINMAX_MUTE(dac_vol_tlv, -9525, 0); |
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static const char * const ramp_rate_txt[] = { "Fast", "Slow" }; |
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static SOC_ENUM_SINGLE_DECL(ramp_rate_enum, VOL_CTRL1, RAMP_RATE, |
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ramp_rate_txt); |
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static const char * const dacr_in_txt[] = { "Right", "Left" }; |
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static SOC_ENUM_SINGLE_DECL(dacr_in_enum, BLOCK_EN, DACR_SRC, dacr_in_txt); |
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static const char * const dacl_in_txt[] = { "Left", "Right" }; |
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static SOC_ENUM_SINGLE_DECL(dacl_in_enum, BLOCK_EN, DACL_SRC, dacl_in_txt); |
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static const char * const mono_txt[] = { "Stereo", "Mono"}; |
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static SOC_ENUM_SINGLE_DECL(mono_enum, VOL_CTRL1, DAC_MONO, mono_txt); |
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static const struct snd_kcontrol_new t9015_snd_controls[] = { |
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/* Volume Controls */ |
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SOC_ENUM("Playback Channel Mode", mono_enum), |
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SOC_SINGLE("Playback Switch", VOL_CTRL1, DAC_SOFT_MUTE, 1, 1), |
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SOC_DOUBLE_TLV("Playback Volume", VOL_CTRL1, DACL_VC, DACR_VC, |
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0xff, 0, dac_vol_tlv), |
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/* Ramp Controls */ |
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SOC_ENUM("Ramp Rate", ramp_rate_enum), |
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SOC_SINGLE("Volume Ramp Switch", VOL_CTRL1, VC_RAMP_MODE, 1, 0), |
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SOC_SINGLE("Mute Ramp Switch", VOL_CTRL1, MUTE_MODE, 1, 0), |
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SOC_SINGLE("Unmute Ramp Switch", VOL_CTRL1, UNMUTE_MODE, 1, 0), |
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}; |
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static const struct snd_kcontrol_new t9015_right_dac_mux = |
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SOC_DAPM_ENUM("Right DAC Source", dacr_in_enum); |
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static const struct snd_kcontrol_new t9015_left_dac_mux = |
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SOC_DAPM_ENUM("Left DAC Source", dacl_in_enum); |
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static const struct snd_soc_dapm_widget t9015_dapm_widgets[] = { |
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SND_SOC_DAPM_AIF_IN("Right IN", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_AIF_IN("Left IN", NULL, 0, SND_SOC_NOPM, 0, 0), |
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SND_SOC_DAPM_MUX("Right DAC Sel", SND_SOC_NOPM, 0, 0, |
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&t9015_right_dac_mux), |
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SND_SOC_DAPM_MUX("Left DAC Sel", SND_SOC_NOPM, 0, 0, |
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&t9015_left_dac_mux), |
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SND_SOC_DAPM_DAC("Right DAC", NULL, BLOCK_EN, DACR_EN, 0), |
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SND_SOC_DAPM_DAC("Left DAC", NULL, BLOCK_EN, DACL_EN, 0), |
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SND_SOC_DAPM_OUT_DRV("Right- Driver", BLOCK_EN, LORN_EN, 0, |
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NULL, 0), |
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SND_SOC_DAPM_OUT_DRV("Right+ Driver", BLOCK_EN, LORP_EN, 0, |
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NULL, 0), |
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SND_SOC_DAPM_OUT_DRV("Left- Driver", BLOCK_EN, LOLN_EN, 0, |
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NULL, 0), |
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SND_SOC_DAPM_OUT_DRV("Left+ Driver", BLOCK_EN, LOLP_EN, 0, |
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NULL, 0), |
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SND_SOC_DAPM_OUTPUT("LORN"), |
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SND_SOC_DAPM_OUTPUT("LORP"), |
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SND_SOC_DAPM_OUTPUT("LOLN"), |
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SND_SOC_DAPM_OUTPUT("LOLP"), |
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}; |
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static const struct snd_soc_dapm_route t9015_dapm_routes[] = { |
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{ "Right IN", NULL, "Playback" }, |
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{ "Left IN", NULL, "Playback" }, |
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{ "Right DAC Sel", "Right", "Right IN" }, |
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{ "Right DAC Sel", "Left", "Left IN" }, |
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{ "Left DAC Sel", "Right", "Right IN" }, |
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{ "Left DAC Sel", "Left", "Left IN" }, |
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{ "Right DAC", NULL, "Right DAC Sel" }, |
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{ "Left DAC", NULL, "Left DAC Sel" }, |
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{ "Right- Driver", NULL, "Right DAC" }, |
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{ "Right+ Driver", NULL, "Right DAC" }, |
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{ "Left- Driver", NULL, "Left DAC" }, |
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{ "Left+ Driver", NULL, "Left DAC" }, |
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{ "LORN", NULL, "Right- Driver", }, |
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{ "LORP", NULL, "Right+ Driver", }, |
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{ "LOLN", NULL, "Left- Driver", }, |
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{ "LOLP", NULL, "Left+ Driver", }, |
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}; |
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static int t9015_set_bias_level(struct snd_soc_component *component, |
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enum snd_soc_bias_level level) |
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{ |
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struct t9015 *priv = snd_soc_component_get_drvdata(component); |
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enum snd_soc_bias_level now = |
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snd_soc_component_get_bias_level(component); |
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int ret; |
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switch (level) { |
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case SND_SOC_BIAS_ON: |
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snd_soc_component_update_bits(component, BLOCK_EN, |
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BIAS_CURRENT_EN, |
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BIAS_CURRENT_EN); |
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break; |
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case SND_SOC_BIAS_PREPARE: |
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snd_soc_component_update_bits(component, BLOCK_EN, |
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BIAS_CURRENT_EN, |
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0); |
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break; |
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case SND_SOC_BIAS_STANDBY: |
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ret = regulator_enable(priv->avdd); |
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if (ret) { |
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dev_err(component->dev, "AVDD enable failed\n"); |
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return ret; |
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} |
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if (now == SND_SOC_BIAS_OFF) { |
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snd_soc_component_update_bits(component, BLOCK_EN, |
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VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN, |
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VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN); |
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mdelay(200); |
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snd_soc_component_update_bits(component, BLOCK_EN, |
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VMID_GEN_FAST, |
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0); |
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} |
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break; |
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case SND_SOC_BIAS_OFF: |
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snd_soc_component_update_bits(component, BLOCK_EN, |
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VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN, |
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0); |
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regulator_disable(priv->avdd); |
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break; |
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} |
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return 0; |
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} |
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static const struct snd_soc_component_driver t9015_codec_driver = { |
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.set_bias_level = t9015_set_bias_level, |
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.controls = t9015_snd_controls, |
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.num_controls = ARRAY_SIZE(t9015_snd_controls), |
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.dapm_widgets = t9015_dapm_widgets, |
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.num_dapm_widgets = ARRAY_SIZE(t9015_dapm_widgets), |
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.dapm_routes = t9015_dapm_routes, |
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.num_dapm_routes = ARRAY_SIZE(t9015_dapm_routes), |
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.suspend_bias_off = 1, |
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.endianness = 1, |
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.non_legacy_dai_naming = 1, |
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}; |
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static const struct regmap_config t9015_regmap_config = { |
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.reg_bits = 32, |
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.reg_stride = 4, |
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.val_bits = 32, |
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.max_register = POWER_CFG, |
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}; |
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static int t9015_probe(struct platform_device *pdev) |
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{ |
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struct device *dev = &pdev->dev; |
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struct t9015 *priv; |
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void __iomem *regs; |
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struct regmap *regmap; |
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int ret; |
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); |
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if (!priv) |
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return -ENOMEM; |
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platform_set_drvdata(pdev, priv); |
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priv->pclk = devm_clk_get(dev, "pclk"); |
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if (IS_ERR(priv->pclk)) { |
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if (PTR_ERR(priv->pclk) != -EPROBE_DEFER) |
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dev_err(dev, "failed to get core clock\n"); |
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return PTR_ERR(priv->pclk); |
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} |
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priv->avdd = devm_regulator_get(dev, "AVDD"); |
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if (IS_ERR(priv->avdd)) { |
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if (PTR_ERR(priv->avdd) != -EPROBE_DEFER) |
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dev_err(dev, "failed to AVDD\n"); |
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return PTR_ERR(priv->avdd); |
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} |
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ret = clk_prepare_enable(priv->pclk); |
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if (ret) { |
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dev_err(dev, "core clock enable failed\n"); |
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return ret; |
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} |
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ret = devm_add_action_or_reset(dev, |
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(void(*)(void *))clk_disable_unprepare, |
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priv->pclk); |
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if (ret) |
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return ret; |
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ret = device_reset(dev); |
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if (ret) { |
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dev_err(dev, "reset failed\n"); |
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return ret; |
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} |
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regs = devm_platform_ioremap_resource(pdev, 0); |
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if (IS_ERR(regs)) { |
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dev_err(dev, "register map failed\n"); |
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return PTR_ERR(regs); |
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} |
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regmap = devm_regmap_init_mmio(dev, regs, &t9015_regmap_config); |
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if (IS_ERR(regmap)) { |
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dev_err(dev, "regmap init failed\n"); |
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return PTR_ERR(regmap); |
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} |
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/* |
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* Initialize output polarity: |
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* ATM the output polarity is fixed but in the future it might useful |
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* to add DT property to set this depending on the platform needs |
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*/ |
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regmap_write(regmap, LINEOUT_CFG, 0x1111); |
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return devm_snd_soc_register_component(dev, &t9015_codec_driver, |
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&t9015_dai, 1); |
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} |
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static const struct of_device_id t9015_ids[] __maybe_unused = { |
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{ .compatible = "amlogic,t9015", }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(of, t9015_ids); |
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static struct platform_driver t9015_driver = { |
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.driver = { |
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.name = "t9015-codec", |
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.of_match_table = of_match_ptr(t9015_ids), |
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}, |
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.probe = t9015_probe, |
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}; |
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module_platform_driver(t9015_driver); |
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MODULE_DESCRIPTION("ASoC Amlogic T9015 codec driver"); |
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MODULE_AUTHOR("Jerome Brunet <[email protected]>"); |
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MODULE_LICENSE("GPL");
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