689 lines
17 KiB
C
689 lines
17 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// Driver for the Texas Instruments TAS2764 CODEC
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// Copyright (C) 2020 Texas Instruments Inc.
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/pm.h>
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#include <linux/i2c.h>
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#include <linux/gpio.h>
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#include <linux/gpio/consumer.h>
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#include <linux/regulator/consumer.h>
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#include <linux/regmap.h>
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#include <linux/of.h>
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#include <linux/of_gpio.h>
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#include <linux/slab.h>
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#include <sound/soc.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/initval.h>
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#include <sound/tlv.h>
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#include "tas2764.h"
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struct tas2764_priv {
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struct snd_soc_component *component;
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struct gpio_desc *reset_gpio;
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struct gpio_desc *sdz_gpio;
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struct regmap *regmap;
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struct device *dev;
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int v_sense_slot;
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int i_sense_slot;
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};
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static void tas2764_reset(struct tas2764_priv *tas2764)
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{
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if (tas2764->reset_gpio) {
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gpiod_set_value_cansleep(tas2764->reset_gpio, 0);
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msleep(20);
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gpiod_set_value_cansleep(tas2764->reset_gpio, 1);
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}
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snd_soc_component_write(tas2764->component, TAS2764_SW_RST,
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TAS2764_RST);
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}
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static int tas2764_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 tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
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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, TAS2764_PWR_CTRL,
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TAS2764_PWR_CTRL_MASK,
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TAS2764_PWR_CTRL_ACTIVE);
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break;
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case SND_SOC_BIAS_STANDBY:
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case SND_SOC_BIAS_PREPARE:
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snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
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TAS2764_PWR_CTRL_MASK,
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TAS2764_PWR_CTRL_MUTE);
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break;
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case SND_SOC_BIAS_OFF:
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snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
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TAS2764_PWR_CTRL_MASK,
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TAS2764_PWR_CTRL_SHUTDOWN);
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break;
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default:
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dev_err(tas2764->dev,
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"wrong power level setting %d\n", level);
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return -EINVAL;
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}
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return 0;
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}
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#ifdef CONFIG_PM
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static int tas2764_codec_suspend(struct snd_soc_component *component)
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{
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struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
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int ret;
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ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
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TAS2764_PWR_CTRL_MASK,
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TAS2764_PWR_CTRL_SHUTDOWN);
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if (ret < 0)
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return ret;
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if (tas2764->sdz_gpio)
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gpiod_set_value_cansleep(tas2764->sdz_gpio, 0);
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regcache_cache_only(tas2764->regmap, true);
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regcache_mark_dirty(tas2764->regmap);
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return 0;
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}
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static int tas2764_codec_resume(struct snd_soc_component *component)
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{
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struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
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int ret;
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if (tas2764->sdz_gpio)
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gpiod_set_value_cansleep(tas2764->sdz_gpio, 1);
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ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
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TAS2764_PWR_CTRL_MASK,
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TAS2764_PWR_CTRL_ACTIVE);
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if (ret < 0)
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return ret;
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regcache_cache_only(tas2764->regmap, false);
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return regcache_sync(tas2764->regmap);
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}
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#else
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#define tas2764_codec_suspend NULL
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#define tas2764_codec_resume NULL
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#endif
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static const char * const tas2764_ASI1_src[] = {
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"I2C offset", "Left", "Right", "LeftRightDiv2",
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};
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static SOC_ENUM_SINGLE_DECL(
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tas2764_ASI1_src_enum, TAS2764_TDM_CFG2, 4, tas2764_ASI1_src);
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static const struct snd_kcontrol_new tas2764_asi1_mux =
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SOC_DAPM_ENUM("ASI1 Source", tas2764_ASI1_src_enum);
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static int tas2764_dac_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
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struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
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int ret;
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switch (event) {
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case SND_SOC_DAPM_POST_PMU:
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ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
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TAS2764_PWR_CTRL_MASK,
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TAS2764_PWR_CTRL_MUTE);
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break;
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case SND_SOC_DAPM_PRE_PMD:
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ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
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TAS2764_PWR_CTRL_MASK,
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TAS2764_PWR_CTRL_SHUTDOWN);
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break;
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default:
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dev_err(tas2764->dev, "Unsupported event\n");
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return -EINVAL;
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}
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if (ret < 0)
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return ret;
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return 0;
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}
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static const struct snd_kcontrol_new isense_switch =
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SOC_DAPM_SINGLE("Switch", TAS2764_PWR_CTRL, TAS2764_ISENSE_POWER_EN, 1, 1);
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static const struct snd_kcontrol_new vsense_switch =
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SOC_DAPM_SINGLE("Switch", TAS2764_PWR_CTRL, TAS2764_VSENSE_POWER_EN, 1, 1);
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static const struct snd_soc_dapm_widget tas2764_dapm_widgets[] = {
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SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0, &tas2764_asi1_mux),
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SND_SOC_DAPM_SWITCH("ISENSE", TAS2764_PWR_CTRL, TAS2764_ISENSE_POWER_EN,
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1, &isense_switch),
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SND_SOC_DAPM_SWITCH("VSENSE", TAS2764_PWR_CTRL, TAS2764_VSENSE_POWER_EN,
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1, &vsense_switch),
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SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2764_dac_event,
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SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
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SND_SOC_DAPM_OUTPUT("OUT"),
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SND_SOC_DAPM_SIGGEN("VMON"),
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SND_SOC_DAPM_SIGGEN("IMON")
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};
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static const struct snd_soc_dapm_route tas2764_audio_map[] = {
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{"ASI1 Sel", "I2C offset", "ASI1"},
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{"ASI1 Sel", "Left", "ASI1"},
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{"ASI1 Sel", "Right", "ASI1"},
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{"ASI1 Sel", "LeftRightDiv2", "ASI1"},
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{"DAC", NULL, "ASI1 Sel"},
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{"OUT", NULL, "DAC"},
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{"ISENSE", "Switch", "IMON"},
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{"VSENSE", "Switch", "VMON"},
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};
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static int tas2764_mute(struct snd_soc_dai *dai, int mute, int direction)
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{
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struct snd_soc_component *component = dai->component;
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int ret;
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ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
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TAS2764_PWR_CTRL_MASK,
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mute ? TAS2764_PWR_CTRL_MUTE : 0);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int tas2764_set_bitwidth(struct tas2764_priv *tas2764, int bitwidth)
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{
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struct snd_soc_component *component = tas2764->component;
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int sense_en;
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int val;
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int ret;
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switch (bitwidth) {
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case SNDRV_PCM_FORMAT_S16_LE:
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ret = snd_soc_component_update_bits(component,
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TAS2764_TDM_CFG2,
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TAS2764_TDM_CFG2_RXW_MASK,
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TAS2764_TDM_CFG2_RXW_16BITS);
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break;
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case SNDRV_PCM_FORMAT_S24_LE:
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ret = snd_soc_component_update_bits(component,
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TAS2764_TDM_CFG2,
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TAS2764_TDM_CFG2_RXW_MASK,
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TAS2764_TDM_CFG2_RXW_24BITS);
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break;
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case SNDRV_PCM_FORMAT_S32_LE:
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ret = snd_soc_component_update_bits(component,
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TAS2764_TDM_CFG2,
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TAS2764_TDM_CFG2_RXW_MASK,
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TAS2764_TDM_CFG2_RXW_32BITS);
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break;
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default:
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return -EINVAL;
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}
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if (ret < 0)
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return ret;
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val = snd_soc_component_read(tas2764->component, TAS2764_PWR_CTRL);
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if (val < 0)
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return val;
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if (val & (1 << TAS2764_VSENSE_POWER_EN))
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sense_en = 0;
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else
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sense_en = TAS2764_TDM_CFG5_VSNS_ENABLE;
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ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG5,
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TAS2764_TDM_CFG5_VSNS_ENABLE,
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sense_en);
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if (ret < 0)
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return ret;
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if (val & (1 << TAS2764_ISENSE_POWER_EN))
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sense_en = 0;
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else
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sense_en = TAS2764_TDM_CFG6_ISNS_ENABLE;
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ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG6,
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TAS2764_TDM_CFG6_ISNS_ENABLE,
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sense_en);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int tas2764_set_samplerate(struct tas2764_priv *tas2764, int samplerate)
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{
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struct snd_soc_component *component = tas2764->component;
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int ramp_rate_val;
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int ret;
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switch (samplerate) {
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case 48000:
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ramp_rate_val = TAS2764_TDM_CFG0_SMP_48KHZ |
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TAS2764_TDM_CFG0_44_1_48KHZ;
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break;
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case 44100:
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ramp_rate_val = TAS2764_TDM_CFG0_SMP_44_1KHZ |
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TAS2764_TDM_CFG0_44_1_48KHZ;
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break;
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case 96000:
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ramp_rate_val = TAS2764_TDM_CFG0_SMP_48KHZ |
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TAS2764_TDM_CFG0_88_2_96KHZ;
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break;
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case 88200:
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ramp_rate_val = TAS2764_TDM_CFG0_SMP_44_1KHZ |
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TAS2764_TDM_CFG0_88_2_96KHZ;
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break;
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default:
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return -EINVAL;
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}
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ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG0,
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TAS2764_TDM_CFG0_SMP_MASK |
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TAS2764_TDM_CFG0_MASK,
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ramp_rate_val);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int tas2764_hw_params(struct snd_pcm_substream *substream,
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struct snd_pcm_hw_params *params,
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struct snd_soc_dai *dai)
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{
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struct snd_soc_component *component = dai->component;
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struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
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int ret;
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ret = tas2764_set_bitwidth(tas2764, params_format(params));
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if (ret < 0)
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return ret;
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return tas2764_set_samplerate(tas2764, params_rate(params));
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}
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static int tas2764_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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struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
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u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0;
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int iface;
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int ret;
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_NF:
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asi_cfg_1 = TAS2764_TDM_CFG1_RX_RISING;
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break;
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case SND_SOC_DAIFMT_IB_NF:
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asi_cfg_1 = TAS2764_TDM_CFG1_RX_FALLING;
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break;
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default:
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dev_err(tas2764->dev, "ASI format Inverse is not found\n");
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return -EINVAL;
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}
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ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG1,
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TAS2764_TDM_CFG1_RX_MASK,
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asi_cfg_1);
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if (ret < 0)
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return ret;
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_I2S:
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case SND_SOC_DAIFMT_DSP_A:
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iface = TAS2764_TDM_CFG2_SCFG_I2S;
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tdm_rx_start_slot = 1;
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break;
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case SND_SOC_DAIFMT_DSP_B:
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case SND_SOC_DAIFMT_LEFT_J:
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iface = TAS2764_TDM_CFG2_SCFG_LEFT_J;
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tdm_rx_start_slot = 0;
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break;
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default:
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dev_err(tas2764->dev,
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"DAI Format is not found, fmt=0x%x\n", fmt);
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return -EINVAL;
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}
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ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG1,
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TAS2764_TDM_CFG1_MASK,
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(tdm_rx_start_slot << TAS2764_TDM_CFG1_51_SHIFT));
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if (ret < 0)
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return ret;
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ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG2,
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TAS2764_TDM_CFG2_SCFG_MASK, iface);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int tas2764_set_dai_tdm_slot(struct snd_soc_dai *dai,
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unsigned int tx_mask,
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unsigned int rx_mask,
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int slots, int slot_width)
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{
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struct snd_soc_component *component = dai->component;
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struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
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int left_slot, right_slot;
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int slots_cfg;
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int slot_size;
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int ret;
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if (tx_mask == 0 || rx_mask != 0)
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return -EINVAL;
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if (slots == 1) {
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if (tx_mask != 1)
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return -EINVAL;
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left_slot = 0;
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right_slot = 0;
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} else {
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left_slot = __ffs(tx_mask);
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tx_mask &= ~(1 << left_slot);
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if (tx_mask == 0) {
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right_slot = left_slot;
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} else {
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right_slot = __ffs(tx_mask);
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tx_mask &= ~(1 << right_slot);
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}
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}
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if (tx_mask != 0 || left_slot >= slots || right_slot >= slots)
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return -EINVAL;
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slots_cfg = (right_slot << TAS2764_TDM_CFG3_RXS_SHIFT) | left_slot;
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ret = snd_soc_component_write(component, TAS2764_TDM_CFG3, slots_cfg);
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if (ret)
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return ret;
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switch (slot_width) {
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case 16:
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slot_size = TAS2764_TDM_CFG2_RXS_16BITS;
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break;
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case 24:
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slot_size = TAS2764_TDM_CFG2_RXS_24BITS;
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break;
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case 32:
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slot_size = TAS2764_TDM_CFG2_RXS_32BITS;
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break;
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default:
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return -EINVAL;
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}
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ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG2,
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TAS2764_TDM_CFG2_RXS_MASK,
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slot_size);
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if (ret < 0)
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return ret;
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ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG5,
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TAS2764_TDM_CFG5_50_MASK,
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tas2764->v_sense_slot);
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if (ret < 0)
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return ret;
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ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG6,
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TAS2764_TDM_CFG6_50_MASK,
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tas2764->i_sense_slot);
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if (ret < 0)
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return ret;
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return 0;
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}
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static const struct snd_soc_dai_ops tas2764_dai_ops = {
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.mute_stream = tas2764_mute,
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.hw_params = tas2764_hw_params,
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.set_fmt = tas2764_set_fmt,
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.set_tdm_slot = tas2764_set_dai_tdm_slot,
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.no_capture_mute = 1,
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};
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#define TAS2764_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
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SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
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#define TAS2764_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
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SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_88200)
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static struct snd_soc_dai_driver tas2764_dai_driver[] = {
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{
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.name = "tas2764 ASI1",
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.id = 0,
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.playback = {
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.stream_name = "ASI1 Playback",
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.channels_min = 2,
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.channels_max = 2,
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.rates = TAS2764_RATES,
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.formats = TAS2764_FORMATS,
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},
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.capture = {
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.stream_name = "ASI1 Capture",
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.channels_min = 0,
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.channels_max = 2,
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.rates = TAS2764_RATES,
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.formats = TAS2764_FORMATS,
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},
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.ops = &tas2764_dai_ops,
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.symmetric_rate = 1,
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},
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};
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static int tas2764_codec_probe(struct snd_soc_component *component)
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{
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struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
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int ret;
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tas2764->component = component;
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if (tas2764->sdz_gpio)
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gpiod_set_value_cansleep(tas2764->sdz_gpio, 1);
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tas2764_reset(tas2764);
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ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG5,
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TAS2764_TDM_CFG5_VSNS_ENABLE, 0);
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if (ret < 0)
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return ret;
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ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG6,
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TAS2764_TDM_CFG6_ISNS_ENABLE, 0);
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if (ret < 0)
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return ret;
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ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
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TAS2764_PWR_CTRL_MASK,
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TAS2764_PWR_CTRL_MUTE);
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if (ret < 0)
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return ret;
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return 0;
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}
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static DECLARE_TLV_DB_SCALE(tas2764_digital_tlv, 1100, 50, 0);
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static DECLARE_TLV_DB_SCALE(tas2764_playback_volume, -10000, 50, 0);
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static const struct snd_kcontrol_new tas2764_snd_controls[] = {
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SOC_SINGLE_TLV("Speaker Volume", TAS2764_DVC, 0,
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TAS2764_DVC_MAX, 1, tas2764_playback_volume),
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SOC_SINGLE_TLV("Amp Gain Volume", TAS2764_CHNL_0, 0, 0x14, 0,
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tas2764_digital_tlv),
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};
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static const struct snd_soc_component_driver soc_component_driver_tas2764 = {
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.probe = tas2764_codec_probe,
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.suspend = tas2764_codec_suspend,
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.resume = tas2764_codec_resume,
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.set_bias_level = tas2764_set_bias_level,
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.controls = tas2764_snd_controls,
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.num_controls = ARRAY_SIZE(tas2764_snd_controls),
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.dapm_widgets = tas2764_dapm_widgets,
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.num_dapm_widgets = ARRAY_SIZE(tas2764_dapm_widgets),
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.dapm_routes = tas2764_audio_map,
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.num_dapm_routes = ARRAY_SIZE(tas2764_audio_map),
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.idle_bias_on = 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 reg_default tas2764_reg_defaults[] = {
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{ TAS2764_PAGE, 0x00 },
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{ TAS2764_SW_RST, 0x00 },
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{ TAS2764_PWR_CTRL, 0x1a },
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{ TAS2764_DVC, 0x00 },
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{ TAS2764_CHNL_0, 0x00 },
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{ TAS2764_TDM_CFG0, 0x09 },
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{ TAS2764_TDM_CFG1, 0x02 },
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{ TAS2764_TDM_CFG2, 0x0a },
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{ TAS2764_TDM_CFG3, 0x10 },
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{ TAS2764_TDM_CFG5, 0x42 },
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};
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static const struct regmap_range_cfg tas2764_regmap_ranges[] = {
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{
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.range_min = 0,
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.range_max = 1 * 128,
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.selector_reg = TAS2764_PAGE,
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.selector_mask = 0xff,
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.selector_shift = 0,
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.window_start = 0,
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.window_len = 128,
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},
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};
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static const struct regmap_config tas2764_i2c_regmap = {
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.reg_bits = 8,
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.val_bits = 8,
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.reg_defaults = tas2764_reg_defaults,
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.num_reg_defaults = ARRAY_SIZE(tas2764_reg_defaults),
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.cache_type = REGCACHE_RBTREE,
|
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.ranges = tas2764_regmap_ranges,
|
|
.num_ranges = ARRAY_SIZE(tas2764_regmap_ranges),
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.max_register = 1 * 128,
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};
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static int tas2764_parse_dt(struct device *dev, struct tas2764_priv *tas2764)
|
|
{
|
|
int ret = 0;
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|
|
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tas2764->reset_gpio = devm_gpiod_get_optional(tas2764->dev, "reset",
|
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GPIOD_OUT_HIGH);
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if (IS_ERR(tas2764->reset_gpio)) {
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if (PTR_ERR(tas2764->reset_gpio) == -EPROBE_DEFER) {
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tas2764->reset_gpio = NULL;
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return -EPROBE_DEFER;
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|
}
|
|
}
|
|
|
|
tas2764->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);
|
|
if (IS_ERR(tas2764->sdz_gpio)) {
|
|
if (PTR_ERR(tas2764->sdz_gpio) == -EPROBE_DEFER)
|
|
return -EPROBE_DEFER;
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|
|
tas2764->sdz_gpio = NULL;
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|
}
|
|
|
|
ret = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
|
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&tas2764->i_sense_slot);
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|
if (ret)
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|
tas2764->i_sense_slot = 0;
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|
ret = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
|
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&tas2764->v_sense_slot);
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|
if (ret)
|
|
tas2764->v_sense_slot = 2;
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|
|
return 0;
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|
}
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|
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static int tas2764_i2c_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct tas2764_priv *tas2764;
|
|
int result;
|
|
|
|
tas2764 = devm_kzalloc(&client->dev, sizeof(struct tas2764_priv),
|
|
GFP_KERNEL);
|
|
if (!tas2764)
|
|
return -ENOMEM;
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|
tas2764->dev = &client->dev;
|
|
i2c_set_clientdata(client, tas2764);
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|
dev_set_drvdata(&client->dev, tas2764);
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|
|
tas2764->regmap = devm_regmap_init_i2c(client, &tas2764_i2c_regmap);
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|
if (IS_ERR(tas2764->regmap)) {
|
|
result = PTR_ERR(tas2764->regmap);
|
|
dev_err(&client->dev, "Failed to allocate register map: %d\n",
|
|
result);
|
|
return result;
|
|
}
|
|
|
|
if (client->dev.of_node) {
|
|
result = tas2764_parse_dt(&client->dev, tas2764);
|
|
if (result) {
|
|
dev_err(tas2764->dev, "%s: Failed to parse devicetree\n",
|
|
__func__);
|
|
return result;
|
|
}
|
|
}
|
|
|
|
return devm_snd_soc_register_component(tas2764->dev,
|
|
&soc_component_driver_tas2764,
|
|
tas2764_dai_driver,
|
|
ARRAY_SIZE(tas2764_dai_driver));
|
|
}
|
|
|
|
static const struct i2c_device_id tas2764_i2c_id[] = {
|
|
{ "tas2764", 0},
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, tas2764_i2c_id);
|
|
|
|
#if defined(CONFIG_OF)
|
|
static const struct of_device_id tas2764_of_match[] = {
|
|
{ .compatible = "ti,tas2764" },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, tas2764_of_match);
|
|
#endif
|
|
|
|
static struct i2c_driver tas2764_i2c_driver = {
|
|
.driver = {
|
|
.name = "tas2764",
|
|
.of_match_table = of_match_ptr(tas2764_of_match),
|
|
},
|
|
.probe = tas2764_i2c_probe,
|
|
.id_table = tas2764_i2c_id,
|
|
};
|
|
module_i2c_driver(tas2764_i2c_driver);
|
|
|
|
MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
|
|
MODULE_DESCRIPTION("TAS2764 I2C Smart Amplifier driver");
|
|
MODULE_LICENSE("GPL v2");
|