731 lines
19 KiB
C
731 lines
19 KiB
C
// SPDX-License-Identifier: GPL-2.0
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//
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// ALSA SoC Texas Instruments TAS2770 20-W Digital Input Mono Class-D
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// Audio Amplifier with Speaker I/V Sense
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//
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// Copyright (C) 2016-2017 Texas Instruments Incorporated - https://www.ti.com/
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// Author: Tracy Yi <tracy-yi@ti.com>
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// Frank Shi <shifu0704@thundersoft.com>
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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/firmware.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 "tas2770.h"
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#define TAS2770_MDELAY 0xFFFFFFFE
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static void tas2770_reset(struct tas2770_priv *tas2770)
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{
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if (tas2770->reset_gpio) {
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gpiod_set_value_cansleep(tas2770->reset_gpio, 0);
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msleep(20);
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gpiod_set_value_cansleep(tas2770->reset_gpio, 1);
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usleep_range(1000, 2000);
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}
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snd_soc_component_write(tas2770->component, TAS2770_SW_RST,
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TAS2770_RST);
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usleep_range(1000, 2000);
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}
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static int tas2770_update_pwr_ctrl(struct tas2770_priv *tas2770)
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{
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struct snd_soc_component *component = tas2770->component;
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unsigned int val;
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int ret;
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if (tas2770->dac_powered)
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val = tas2770->unmuted ?
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TAS2770_PWR_CTRL_ACTIVE : TAS2770_PWR_CTRL_MUTE;
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else
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val = TAS2770_PWR_CTRL_SHUTDOWN;
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ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
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TAS2770_PWR_CTRL_MASK, 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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#ifdef CONFIG_PM
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static int tas2770_codec_suspend(struct snd_soc_component *component)
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{
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struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component);
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int ret = 0;
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regcache_cache_only(tas2770->regmap, true);
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regcache_mark_dirty(tas2770->regmap);
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if (tas2770->sdz_gpio) {
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gpiod_set_value_cansleep(tas2770->sdz_gpio, 0);
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} else {
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ret = snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
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TAS2770_PWR_CTRL_MASK,
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TAS2770_PWR_CTRL_SHUTDOWN);
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if (ret < 0) {
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regcache_cache_only(tas2770->regmap, false);
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regcache_sync(tas2770->regmap);
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return ret;
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}
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ret = 0;
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}
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return ret;
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}
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static int tas2770_codec_resume(struct snd_soc_component *component)
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{
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struct tas2770_priv *tas2770 = snd_soc_component_get_drvdata(component);
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int ret;
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if (tas2770->sdz_gpio) {
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gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);
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usleep_range(1000, 2000);
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} else {
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ret = tas2770_update_pwr_ctrl(tas2770);
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if (ret < 0)
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return ret;
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}
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regcache_cache_only(tas2770->regmap, false);
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return regcache_sync(tas2770->regmap);
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}
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#else
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#define tas2770_codec_suspend NULL
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#define tas2770_codec_resume NULL
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#endif
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static const char * const tas2770_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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tas2770_ASI1_src_enum, TAS2770_TDM_CFG_REG2,
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4, tas2770_ASI1_src);
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static const struct snd_kcontrol_new tas2770_asi1_mux =
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SOC_DAPM_ENUM("ASI1 Source", tas2770_ASI1_src_enum);
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static int tas2770_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 =
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snd_soc_dapm_to_component(w->dapm);
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struct tas2770_priv *tas2770 =
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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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tas2770->dac_powered = 1;
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ret = tas2770_update_pwr_ctrl(tas2770);
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break;
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case SND_SOC_DAPM_PRE_PMD:
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tas2770->dac_powered = 0;
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ret = tas2770_update_pwr_ctrl(tas2770);
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break;
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default:
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dev_err(tas2770->dev, "Not supported evevt\n");
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return -EINVAL;
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}
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return ret;
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}
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static const struct snd_kcontrol_new isense_switch =
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SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 3, 1, 1);
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static const struct snd_kcontrol_new vsense_switch =
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SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 2, 1, 1);
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static const struct snd_soc_dapm_widget tas2770_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, &tas2770_asi1_mux),
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SND_SOC_DAPM_SWITCH("ISENSE", TAS2770_PWR_CTRL, 3, 1, &isense_switch),
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SND_SOC_DAPM_SWITCH("VSENSE", TAS2770_PWR_CTRL, 2, 1, &vsense_switch),
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SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2770_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 tas2770_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 tas2770_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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struct tas2770_priv *tas2770 =
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snd_soc_component_get_drvdata(component);
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tas2770->unmuted = !mute;
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return tas2770_update_pwr_ctrl(tas2770);
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}
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static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth)
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{
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int ret;
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struct snd_soc_component *component = tas2770->component;
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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, TAS2770_TDM_CFG_REG2,
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TAS2770_TDM_CFG_REG2_RXW_MASK,
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TAS2770_TDM_CFG_REG2_RXW_16BITS);
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tas2770->v_sense_slot = tas2770->i_sense_slot + 2;
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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, TAS2770_TDM_CFG_REG2,
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TAS2770_TDM_CFG_REG2_RXW_MASK,
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TAS2770_TDM_CFG_REG2_RXW_24BITS);
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tas2770->v_sense_slot = tas2770->i_sense_slot + 4;
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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, TAS2770_TDM_CFG_REG2,
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TAS2770_TDM_CFG_REG2_RXW_MASK,
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TAS2770_TDM_CFG_REG2_RXW_32BITS);
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tas2770->v_sense_slot = tas2770->i_sense_slot + 4;
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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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ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG5,
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TAS2770_TDM_CFG_REG5_VSNS_MASK |
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TAS2770_TDM_CFG_REG5_50_MASK,
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TAS2770_TDM_CFG_REG5_VSNS_ENABLE |
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tas2770->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, TAS2770_TDM_CFG_REG6,
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TAS2770_TDM_CFG_REG6_ISNS_MASK |
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TAS2770_TDM_CFG_REG6_50_MASK,
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TAS2770_TDM_CFG_REG6_ISNS_ENABLE |
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tas2770->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 int tas2770_set_samplerate(struct tas2770_priv *tas2770, int samplerate)
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{
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struct snd_soc_component *component = tas2770->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 = TAS2770_TDM_CFG_REG0_SMP_48KHZ |
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TAS2770_TDM_CFG_REG0_31_44_1_48KHZ;
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break;
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case 44100:
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ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ |
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TAS2770_TDM_CFG_REG0_31_44_1_48KHZ;
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break;
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case 96000:
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ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ |
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TAS2770_TDM_CFG_REG0_31_88_2_96KHZ;
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break;
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case 88200:
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ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ |
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TAS2770_TDM_CFG_REG0_31_88_2_96KHZ;
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break;
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case 192000:
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ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_48KHZ |
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TAS2770_TDM_CFG_REG0_31_176_4_192KHZ;
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break;
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case 176400:
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ramp_rate_val = TAS2770_TDM_CFG_REG0_SMP_44_1KHZ |
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TAS2770_TDM_CFG_REG0_31_176_4_192KHZ;
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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, TAS2770_TDM_CFG_REG0,
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TAS2770_TDM_CFG_REG0_SMP_MASK |
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TAS2770_TDM_CFG_REG0_31_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 tas2770_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 tas2770_priv *tas2770 =
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snd_soc_component_get_drvdata(component);
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int ret;
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ret = tas2770_set_bitwidth(tas2770, params_format(params));
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if (ret)
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return ret;
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return tas2770_set_samplerate(tas2770, params_rate(params));
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}
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static int tas2770_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 tas2770_priv *tas2770 =
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snd_soc_component_get_drvdata(component);
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u8 tdm_rx_start_slot = 0, invert_fpol = 0, fpol_preinv = 0, asi_cfg_1 = 0;
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int ret;
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switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
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case SND_SOC_DAIFMT_CBC_CFC:
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break;
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default:
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dev_err(tas2770->dev, "ASI invalid DAI clocking\n");
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return -EINVAL;
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}
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_IF:
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invert_fpol = 1;
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fallthrough;
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case SND_SOC_DAIFMT_NB_NF:
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asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_RSING;
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break;
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case SND_SOC_DAIFMT_IB_IF:
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invert_fpol = 1;
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fallthrough;
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case SND_SOC_DAIFMT_IB_NF:
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asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_FALING;
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break;
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default:
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dev_err(tas2770->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, TAS2770_TDM_CFG_REG1,
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TAS2770_TDM_CFG_REG1_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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tdm_rx_start_slot = 1;
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fpol_preinv = 0;
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break;
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case SND_SOC_DAIFMT_DSP_A:
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tdm_rx_start_slot = 0;
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fpol_preinv = 1;
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break;
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case SND_SOC_DAIFMT_DSP_B:
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tdm_rx_start_slot = 1;
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fpol_preinv = 1;
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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tdm_rx_start_slot = 0;
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fpol_preinv = 1;
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break;
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default:
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dev_err(tas2770->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, TAS2770_TDM_CFG_REG1,
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TAS2770_TDM_CFG_REG1_MASK,
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(tdm_rx_start_slot << TAS2770_TDM_CFG_REG1_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, TAS2770_TDM_CFG_REG0,
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TAS2770_TDM_CFG_REG0_FPOL_MASK,
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(fpol_preinv ^ invert_fpol)
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? TAS2770_TDM_CFG_REG0_FPOL_RSING
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: TAS2770_TDM_CFG_REG0_FPOL_FALING);
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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 tas2770_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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int left_slot, right_slot;
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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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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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if (tx_mask != 0 || left_slot >= slots || right_slot >= slots)
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return -EINVAL;
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ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3,
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TAS2770_TDM_CFG_REG3_30_MASK,
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(left_slot << TAS2770_TDM_CFG_REG3_30_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, TAS2770_TDM_CFG_REG3,
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TAS2770_TDM_CFG_REG3_RXS_MASK,
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(right_slot << TAS2770_TDM_CFG_REG3_RXS_SHIFT));
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if (ret < 0)
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return ret;
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switch (slot_width) {
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case 16:
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ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
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TAS2770_TDM_CFG_REG2_RXS_MASK,
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TAS2770_TDM_CFG_REG2_RXS_16BITS);
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break;
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case 24:
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ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
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TAS2770_TDM_CFG_REG2_RXS_MASK,
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TAS2770_TDM_CFG_REG2_RXS_24BITS);
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break;
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case 32:
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ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG2,
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TAS2770_TDM_CFG_REG2_RXS_MASK,
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TAS2770_TDM_CFG_REG2_RXS_32BITS);
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break;
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case 0:
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/* Do not change slot width */
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ret = 0;
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break;
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default:
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ret = -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_soc_dai_ops tas2770_dai_ops = {
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.mute_stream = tas2770_mute,
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.hw_params = tas2770_hw_params,
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.set_fmt = tas2770_set_fmt,
|
|
.set_tdm_slot = tas2770_set_dai_tdm_slot,
|
|
.no_capture_mute = 1,
|
|
};
|
|
|
|
#define TAS2770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
|
|
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
|
|
|
|
#define TAS2770_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
|
|
SNDRV_PCM_RATE_96000 |\
|
|
SNDRV_PCM_RATE_192000\
|
|
)
|
|
|
|
static struct snd_soc_dai_driver tas2770_dai_driver[] = {
|
|
{
|
|
.name = "tas2770 ASI1",
|
|
.id = 0,
|
|
.playback = {
|
|
.stream_name = "ASI1 Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 2,
|
|
.rates = TAS2770_RATES,
|
|
.formats = TAS2770_FORMATS,
|
|
},
|
|
.capture = {
|
|
.stream_name = "ASI1 Capture",
|
|
.channels_min = 0,
|
|
.channels_max = 2,
|
|
.rates = TAS2770_RATES,
|
|
.formats = TAS2770_FORMATS,
|
|
},
|
|
.ops = &tas2770_dai_ops,
|
|
.symmetric_rate = 1,
|
|
},
|
|
};
|
|
|
|
static const struct regmap_config tas2770_i2c_regmap;
|
|
|
|
static int tas2770_codec_probe(struct snd_soc_component *component)
|
|
{
|
|
struct tas2770_priv *tas2770 =
|
|
snd_soc_component_get_drvdata(component);
|
|
|
|
tas2770->component = component;
|
|
|
|
if (tas2770->sdz_gpio) {
|
|
gpiod_set_value_cansleep(tas2770->sdz_gpio, 1);
|
|
usleep_range(1000, 2000);
|
|
}
|
|
|
|
tas2770_reset(tas2770);
|
|
regmap_reinit_cache(tas2770->regmap, &tas2770_i2c_regmap);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static DECLARE_TLV_DB_SCALE(tas2770_digital_tlv, 1100, 50, 0);
|
|
static DECLARE_TLV_DB_SCALE(tas2770_playback_volume, -12750, 50, 0);
|
|
|
|
static const struct snd_kcontrol_new tas2770_snd_controls[] = {
|
|
SOC_SINGLE_TLV("Speaker Playback Volume", TAS2770_PLAY_CFG_REG2,
|
|
0, TAS2770_PLAY_CFG_REG2_VMAX, 1, tas2770_playback_volume),
|
|
SOC_SINGLE_TLV("Amp Gain Volume", TAS2770_PLAY_CFG_REG0, 0, 0x14, 0,
|
|
tas2770_digital_tlv),
|
|
};
|
|
|
|
static const struct snd_soc_component_driver soc_component_driver_tas2770 = {
|
|
.probe = tas2770_codec_probe,
|
|
.suspend = tas2770_codec_suspend,
|
|
.resume = tas2770_codec_resume,
|
|
.controls = tas2770_snd_controls,
|
|
.num_controls = ARRAY_SIZE(tas2770_snd_controls),
|
|
.dapm_widgets = tas2770_dapm_widgets,
|
|
.num_dapm_widgets = ARRAY_SIZE(tas2770_dapm_widgets),
|
|
.dapm_routes = tas2770_audio_map,
|
|
.num_dapm_routes = ARRAY_SIZE(tas2770_audio_map),
|
|
.idle_bias_on = 1,
|
|
.endianness = 1,
|
|
};
|
|
|
|
static int tas2770_register_codec(struct tas2770_priv *tas2770)
|
|
{
|
|
return devm_snd_soc_register_component(tas2770->dev,
|
|
&soc_component_driver_tas2770,
|
|
tas2770_dai_driver, ARRAY_SIZE(tas2770_dai_driver));
|
|
}
|
|
|
|
static const struct reg_default tas2770_reg_defaults[] = {
|
|
{ TAS2770_PAGE, 0x00 },
|
|
{ TAS2770_SW_RST, 0x00 },
|
|
{ TAS2770_PWR_CTRL, 0x0e },
|
|
{ TAS2770_PLAY_CFG_REG0, 0x10 },
|
|
{ TAS2770_PLAY_CFG_REG1, 0x01 },
|
|
{ TAS2770_PLAY_CFG_REG2, 0x00 },
|
|
{ TAS2770_MSC_CFG_REG0, 0x07 },
|
|
{ TAS2770_TDM_CFG_REG1, 0x02 },
|
|
{ TAS2770_TDM_CFG_REG2, 0x0a },
|
|
{ TAS2770_TDM_CFG_REG3, 0x10 },
|
|
{ TAS2770_INT_MASK_REG0, 0xfc },
|
|
{ TAS2770_INT_MASK_REG1, 0xb1 },
|
|
{ TAS2770_INT_CFG, 0x05 },
|
|
{ TAS2770_MISC_IRQ, 0x81 },
|
|
{ TAS2770_CLK_CGF, 0x0c },
|
|
|
|
};
|
|
|
|
static bool tas2770_volatile(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case TAS2770_PAGE: /* regmap implementation requires this */
|
|
case TAS2770_SW_RST: /* always clears after write */
|
|
case TAS2770_BO_PRV_REG0:/* has a self clearing bit */
|
|
case TAS2770_LVE_INT_REG0:
|
|
case TAS2770_LVE_INT_REG1:
|
|
case TAS2770_LAT_INT_REG0:/* Sticky interrupt flags */
|
|
case TAS2770_LAT_INT_REG1:/* Sticky interrupt flags */
|
|
case TAS2770_VBAT_MSB:
|
|
case TAS2770_VBAT_LSB:
|
|
case TAS2770_TEMP_MSB:
|
|
case TAS2770_TEMP_LSB:
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static bool tas2770_writeable(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case TAS2770_LVE_INT_REG0:
|
|
case TAS2770_LVE_INT_REG1:
|
|
case TAS2770_LAT_INT_REG0:
|
|
case TAS2770_LAT_INT_REG1:
|
|
case TAS2770_VBAT_MSB:
|
|
case TAS2770_VBAT_LSB:
|
|
case TAS2770_TEMP_MSB:
|
|
case TAS2770_TEMP_LSB:
|
|
case TAS2770_TDM_CLK_DETC:
|
|
case TAS2770_REV_AND_GPID:
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static const struct regmap_range_cfg tas2770_regmap_ranges[] = {
|
|
{
|
|
.range_min = 0,
|
|
.range_max = 1 * 128,
|
|
.selector_reg = TAS2770_PAGE,
|
|
.selector_mask = 0xff,
|
|
.selector_shift = 0,
|
|
.window_start = 0,
|
|
.window_len = 128,
|
|
},
|
|
};
|
|
|
|
static const struct regmap_config tas2770_i2c_regmap = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
.writeable_reg = tas2770_writeable,
|
|
.volatile_reg = tas2770_volatile,
|
|
.reg_defaults = tas2770_reg_defaults,
|
|
.num_reg_defaults = ARRAY_SIZE(tas2770_reg_defaults),
|
|
.cache_type = REGCACHE_RBTREE,
|
|
.ranges = tas2770_regmap_ranges,
|
|
.num_ranges = ARRAY_SIZE(tas2770_regmap_ranges),
|
|
.max_register = 1 * 128,
|
|
};
|
|
|
|
static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770)
|
|
{
|
|
int rc = 0;
|
|
|
|
rc = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
|
|
&tas2770->i_sense_slot);
|
|
if (rc) {
|
|
dev_info(tas2770->dev, "Property %s is missing setting default slot\n",
|
|
"ti,imon-slot-no");
|
|
|
|
tas2770->i_sense_slot = 0;
|
|
}
|
|
|
|
rc = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
|
|
&tas2770->v_sense_slot);
|
|
if (rc) {
|
|
dev_info(tas2770->dev, "Property %s is missing setting default slot\n",
|
|
"ti,vmon-slot-no");
|
|
|
|
tas2770->v_sense_slot = 2;
|
|
}
|
|
|
|
tas2770->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);
|
|
if (IS_ERR(tas2770->sdz_gpio)) {
|
|
if (PTR_ERR(tas2770->sdz_gpio) == -EPROBE_DEFER)
|
|
return -EPROBE_DEFER;
|
|
|
|
tas2770->sdz_gpio = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tas2770_i2c_probe(struct i2c_client *client)
|
|
{
|
|
struct tas2770_priv *tas2770;
|
|
int result;
|
|
|
|
tas2770 = devm_kzalloc(&client->dev, sizeof(struct tas2770_priv),
|
|
GFP_KERNEL);
|
|
if (!tas2770)
|
|
return -ENOMEM;
|
|
|
|
tas2770->dev = &client->dev;
|
|
i2c_set_clientdata(client, tas2770);
|
|
dev_set_drvdata(&client->dev, tas2770);
|
|
|
|
tas2770->regmap = devm_regmap_init_i2c(client, &tas2770_i2c_regmap);
|
|
if (IS_ERR(tas2770->regmap)) {
|
|
result = PTR_ERR(tas2770->regmap);
|
|
dev_err(&client->dev, "Failed to allocate register map: %d\n",
|
|
result);
|
|
return result;
|
|
}
|
|
|
|
if (client->dev.of_node) {
|
|
result = tas2770_parse_dt(&client->dev, tas2770);
|
|
if (result) {
|
|
dev_err(tas2770->dev, "%s: Failed to parse devicetree\n",
|
|
__func__);
|
|
return result;
|
|
}
|
|
}
|
|
|
|
tas2770->reset_gpio = devm_gpiod_get_optional(tas2770->dev, "reset",
|
|
GPIOD_OUT_HIGH);
|
|
if (IS_ERR(tas2770->reset_gpio)) {
|
|
if (PTR_ERR(tas2770->reset_gpio) == -EPROBE_DEFER) {
|
|
tas2770->reset_gpio = NULL;
|
|
return -EPROBE_DEFER;
|
|
}
|
|
}
|
|
|
|
result = tas2770_register_codec(tas2770);
|
|
if (result)
|
|
dev_err(tas2770->dev, "Register codec failed.\n");
|
|
|
|
return result;
|
|
}
|
|
|
|
static const struct i2c_device_id tas2770_i2c_id[] = {
|
|
{ "tas2770", 0},
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, tas2770_i2c_id);
|
|
|
|
#if defined(CONFIG_OF)
|
|
static const struct of_device_id tas2770_of_match[] = {
|
|
{ .compatible = "ti,tas2770" },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, tas2770_of_match);
|
|
#endif
|
|
|
|
static struct i2c_driver tas2770_i2c_driver = {
|
|
.driver = {
|
|
.name = "tas2770",
|
|
.of_match_table = of_match_ptr(tas2770_of_match),
|
|
},
|
|
.probe_new = tas2770_i2c_probe,
|
|
.id_table = tas2770_i2c_id,
|
|
};
|
|
module_i2c_driver(tas2770_i2c_driver);
|
|
|
|
MODULE_AUTHOR("Shi Fu <shifu0704@thundersoft.com>");
|
|
MODULE_DESCRIPTION("TAS2770 I2C Smart Amplifier driver");
|
|
MODULE_LICENSE("GPL v2");
|