diff options
Diffstat (limited to 'sound/soc/meson/t9015.c')
| -rw-r--r-- | sound/soc/meson/t9015.c | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/sound/soc/meson/t9015.c b/sound/soc/meson/t9015.c new file mode 100644 index 000000000..9c6b4dac6 --- /dev/null +++ b/sound/soc/meson/t9015.c @@ -0,0 +1,326 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (c) 2020 BayLibre, SAS. +// Author: Jerome Brunet <jbrunet@baylibre.com> + +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> +#include <linux/reset.h> +#include <sound/soc.h> +#include <sound/tlv.h> + +#define BLOCK_EN 0x00 +#define LORN_EN 0 +#define LORP_EN 1 +#define LOLN_EN 2 +#define LOLP_EN 3 +#define DACR_EN 4 +#define DACL_EN 5 +#define DACR_INV 20 +#define DACL_INV 21 +#define DACR_SRC 22 +#define DACL_SRC 23 +#define REFP_BUF_EN BIT(12) +#define BIAS_CURRENT_EN BIT(13) +#define VMID_GEN_FAST BIT(14) +#define VMID_GEN_EN BIT(15) +#define I2S_MODE BIT(30) +#define VOL_CTRL0 0x04 +#define GAIN_H 31 +#define GAIN_L 23 +#define VOL_CTRL1 0x08 +#define DAC_MONO 8 +#define RAMP_RATE 10 +#define VC_RAMP_MODE 12 +#define MUTE_MODE 13 +#define UNMUTE_MODE 14 +#define DAC_SOFT_MUTE 15 +#define DACR_VC 16 +#define DACL_VC 24 +#define LINEOUT_CFG 0x0c +#define LORN_POL 0 +#define LORP_POL 4 +#define LOLN_POL 8 +#define LOLP_POL 12 +#define POWER_CFG 0x10 + +struct t9015 { + struct clk *pclk; + struct regulator *avdd; +}; + +static int t9015_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct snd_soc_component *component = dai->component; + unsigned int val; + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + val = I2S_MODE; + break; + + case SND_SOC_DAIFMT_CBS_CFS: + val = 0; + break; + + default: + return -EINVAL; + } + + snd_soc_component_update_bits(component, BLOCK_EN, I2S_MODE, val); + + if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_I2S) && + ((fmt & SND_SOC_DAIFMT_FORMAT_MASK) != SND_SOC_DAIFMT_LEFT_J)) + return -EINVAL; + + return 0; +} + +static const struct snd_soc_dai_ops t9015_dai_ops = { + .set_fmt = t9015_dai_set_fmt, +}; + +static struct snd_soc_dai_driver t9015_dai = { + .name = "t9015-hifi", + .playback = { + .stream_name = "Playback", + .channels_min = 1, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_8000_96000, + .formats = (SNDRV_PCM_FMTBIT_S8 | + SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_S20_LE | + SNDRV_PCM_FMTBIT_S24_LE), + }, + .ops = &t9015_dai_ops, +}; + +static const DECLARE_TLV_DB_MINMAX_MUTE(dac_vol_tlv, -9525, 0); + +static const char * const ramp_rate_txt[] = { "Fast", "Slow" }; +static SOC_ENUM_SINGLE_DECL(ramp_rate_enum, VOL_CTRL1, RAMP_RATE, + ramp_rate_txt); + +static const char * const dacr_in_txt[] = { "Right", "Left" }; +static SOC_ENUM_SINGLE_DECL(dacr_in_enum, BLOCK_EN, DACR_SRC, dacr_in_txt); + +static const char * const dacl_in_txt[] = { "Left", "Right" }; +static SOC_ENUM_SINGLE_DECL(dacl_in_enum, BLOCK_EN, DACL_SRC, dacl_in_txt); + +static const char * const mono_txt[] = { "Stereo", "Mono"}; +static SOC_ENUM_SINGLE_DECL(mono_enum, VOL_CTRL1, DAC_MONO, mono_txt); + +static const struct snd_kcontrol_new t9015_snd_controls[] = { + /* Volume Controls */ + SOC_ENUM("Playback Channel Mode", mono_enum), + SOC_SINGLE("Playback Switch", VOL_CTRL1, DAC_SOFT_MUTE, 1, 1), + SOC_DOUBLE_TLV("Playback Volume", VOL_CTRL1, DACL_VC, DACR_VC, + 0xff, 0, dac_vol_tlv), + + /* Ramp Controls */ + SOC_ENUM("Ramp Rate", ramp_rate_enum), + SOC_SINGLE("Volume Ramp Switch", VOL_CTRL1, VC_RAMP_MODE, 1, 0), + SOC_SINGLE("Mute Ramp Switch", VOL_CTRL1, MUTE_MODE, 1, 0), + SOC_SINGLE("Unmute Ramp Switch", VOL_CTRL1, UNMUTE_MODE, 1, 0), +}; + +static const struct snd_kcontrol_new t9015_right_dac_mux = + SOC_DAPM_ENUM("Right DAC Source", dacr_in_enum); +static const struct snd_kcontrol_new t9015_left_dac_mux = + SOC_DAPM_ENUM("Left DAC Source", dacl_in_enum); + +static const struct snd_soc_dapm_widget t9015_dapm_widgets[] = { + SND_SOC_DAPM_AIF_IN("Right IN", NULL, 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_AIF_IN("Left IN", NULL, 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_MUX("Right DAC Sel", SND_SOC_NOPM, 0, 0, + &t9015_right_dac_mux), + SND_SOC_DAPM_MUX("Left DAC Sel", SND_SOC_NOPM, 0, 0, + &t9015_left_dac_mux), + SND_SOC_DAPM_DAC("Right DAC", NULL, BLOCK_EN, DACR_EN, 0), + SND_SOC_DAPM_DAC("Left DAC", NULL, BLOCK_EN, DACL_EN, 0), + SND_SOC_DAPM_OUT_DRV("Right- Driver", BLOCK_EN, LORN_EN, 0, + NULL, 0), + SND_SOC_DAPM_OUT_DRV("Right+ Driver", BLOCK_EN, LORP_EN, 0, + NULL, 0), + SND_SOC_DAPM_OUT_DRV("Left- Driver", BLOCK_EN, LOLN_EN, 0, + NULL, 0), + SND_SOC_DAPM_OUT_DRV("Left+ Driver", BLOCK_EN, LOLP_EN, 0, + NULL, 0), + SND_SOC_DAPM_OUTPUT("LORN"), + SND_SOC_DAPM_OUTPUT("LORP"), + SND_SOC_DAPM_OUTPUT("LOLN"), + SND_SOC_DAPM_OUTPUT("LOLP"), +}; + +static const struct snd_soc_dapm_route t9015_dapm_routes[] = { + { "Right IN", NULL, "Playback" }, + { "Left IN", NULL, "Playback" }, + { "Right DAC Sel", "Right", "Right IN" }, + { "Right DAC Sel", "Left", "Left IN" }, + { "Left DAC Sel", "Right", "Right IN" }, + { "Left DAC Sel", "Left", "Left IN" }, + { "Right DAC", NULL, "Right DAC Sel" }, + { "Left DAC", NULL, "Left DAC Sel" }, + { "Right- Driver", NULL, "Right DAC" }, + { "Right+ Driver", NULL, "Right DAC" }, + { "Left- Driver", NULL, "Left DAC" }, + { "Left+ Driver", NULL, "Left DAC" }, + { "LORN", NULL, "Right- Driver", }, + { "LORP", NULL, "Right+ Driver", }, + { "LOLN", NULL, "Left- Driver", }, + { "LOLP", NULL, "Left+ Driver", }, +}; + +static int t9015_set_bias_level(struct snd_soc_component *component, + enum snd_soc_bias_level level) +{ + struct t9015 *priv = snd_soc_component_get_drvdata(component); + enum snd_soc_bias_level now = + snd_soc_component_get_bias_level(component); + int ret; + + switch (level) { + case SND_SOC_BIAS_ON: + snd_soc_component_update_bits(component, BLOCK_EN, + BIAS_CURRENT_EN, + BIAS_CURRENT_EN); + break; + case SND_SOC_BIAS_PREPARE: + snd_soc_component_update_bits(component, BLOCK_EN, + BIAS_CURRENT_EN, + 0); + break; + case SND_SOC_BIAS_STANDBY: + ret = regulator_enable(priv->avdd); + if (ret) { + dev_err(component->dev, "AVDD enable failed\n"); + return ret; + } + + if (now == SND_SOC_BIAS_OFF) { + snd_soc_component_update_bits(component, BLOCK_EN, + VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN, + VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN); + + mdelay(200); + snd_soc_component_update_bits(component, BLOCK_EN, + VMID_GEN_FAST, + 0); + } + + break; + case SND_SOC_BIAS_OFF: + snd_soc_component_update_bits(component, BLOCK_EN, + VMID_GEN_EN | VMID_GEN_FAST | REFP_BUF_EN, + 0); + + regulator_disable(priv->avdd); + break; + } + + return 0; +} + +static const struct snd_soc_component_driver t9015_codec_driver = { + .set_bias_level = t9015_set_bias_level, + .controls = t9015_snd_controls, + .num_controls = ARRAY_SIZE(t9015_snd_controls), + .dapm_widgets = t9015_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(t9015_dapm_widgets), + .dapm_routes = t9015_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(t9015_dapm_routes), + .suspend_bias_off = 1, + .endianness = 1, +}; + +static const struct regmap_config t9015_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .max_register = POWER_CFG, +}; + +static int t9015_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct t9015 *priv; + void __iomem *regs; + struct regmap *regmap; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + platform_set_drvdata(pdev, priv); + + priv->pclk = devm_clk_get(dev, "pclk"); + if (IS_ERR(priv->pclk)) + return dev_err_probe(dev, PTR_ERR(priv->pclk), "failed to get core clock\n"); + + priv->avdd = devm_regulator_get(dev, "AVDD"); + if (IS_ERR(priv->avdd)) + return dev_err_probe(dev, PTR_ERR(priv->avdd), "failed to AVDD\n"); + + ret = clk_prepare_enable(priv->pclk); + if (ret) { + dev_err(dev, "core clock enable failed\n"); + return ret; + } + + ret = devm_add_action_or_reset(dev, + (void(*)(void *))clk_disable_unprepare, + priv->pclk); + if (ret) + return ret; + + ret = device_reset(dev); + if (ret) { + dev_err(dev, "reset failed\n"); + return ret; + } + + regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(regs)) { + dev_err(dev, "register map failed\n"); + return PTR_ERR(regs); + } + + regmap = devm_regmap_init_mmio(dev, regs, &t9015_regmap_config); + if (IS_ERR(regmap)) { + dev_err(dev, "regmap init failed\n"); + return PTR_ERR(regmap); + } + + /* + * Initialize output polarity: + * ATM the output polarity is fixed but in the future it might useful + * to add DT property to set this depending on the platform needs + */ + regmap_write(regmap, LINEOUT_CFG, 0x1111); + + return devm_snd_soc_register_component(dev, &t9015_codec_driver, + &t9015_dai, 1); +} + +static const struct of_device_id t9015_ids[] __maybe_unused = { + { .compatible = "amlogic,t9015", }, + { } +}; +MODULE_DEVICE_TABLE(of, t9015_ids); + +static struct platform_driver t9015_driver = { + .driver = { + .name = "t9015-codec", + .of_match_table = of_match_ptr(t9015_ids), + }, + .probe = t9015_probe, +}; + +module_platform_driver(t9015_driver); + +MODULE_DESCRIPTION("ASoC Amlogic T9015 codec driver"); +MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>"); +MODULE_LICENSE("GPL"); |