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730 lines
19 KiB
730 lines
19 KiB
// 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 <[email protected]> |
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// Frank Shi <[email protected]> |
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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, |
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.set_tdm_slot = tas2770_set_dai_tdm_slot, |
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.no_capture_mute = 1, |
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}; |
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#define TAS2770_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 TAS2770_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\ |
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SNDRV_PCM_RATE_96000 |\ |
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SNDRV_PCM_RATE_192000\ |
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) |
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static struct snd_soc_dai_driver tas2770_dai_driver[] = { |
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{ |
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.name = "tas2770 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 = 1, |
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.channels_max = 2, |
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.rates = TAS2770_RATES, |
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.formats = TAS2770_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 = TAS2770_RATES, |
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.formats = TAS2770_FORMATS, |
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}, |
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.ops = &tas2770_dai_ops, |
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.symmetric_rate = 1, |
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}, |
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}; |
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static const struct regmap_config tas2770_i2c_regmap; |
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|
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static int tas2770_codec_probe(struct snd_soc_component *component) |
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{ |
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struct tas2770_priv *tas2770 = |
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snd_soc_component_get_drvdata(component); |
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|
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tas2770->component = component; |
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|
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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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} |
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|
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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 <[email protected]>"); |
|
MODULE_DESCRIPTION("TAS2770 I2C Smart Amplifier driver"); |
|
MODULE_LICENSE("GPL v2");
|
|
|