328 lines
8.8 KiB
C
328 lines
8.8 KiB
C
// 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 <jbrunet@baylibre.com>
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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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return dev_err_probe(dev, PTR_ERR(priv->pclk), "failed to get core clock\n");
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priv->avdd = devm_regulator_get(dev, "AVDD");
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if (IS_ERR(priv->avdd))
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return dev_err_probe(dev, PTR_ERR(priv->avdd), "failed to AVDD\n");
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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 <jbrunet@baylibre.com>");
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MODULE_LICENSE("GPL");
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