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Subject[PATCH v2] tas2770: add tas2770 smart PA kernel driver
Date
From: Frank Shi <shifu0704@thundersoft.com>

add tas2770 smart PA kernel driver

Signed-off-by: Frank Shi <shifu0704@thundersoft.com>
---
sound/soc/codecs/Kconfig | 5 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/tas2770.c | 954 +++++++++++++++++++++++++++++++++++++++++++++
sound/soc/codecs/tas2770.h | 166 ++++++++
4 files changed, 1127 insertions(+)
create mode 100644 sound/soc/codecs/tas2770.c
create mode 100644 sound/soc/codecs/tas2770.h

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 8f3e787..cc92da3 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -111,6 +111,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_STAC9766 if SND_SOC_AC97_BUS
select SND_SOC_STI_SAS
select SND_SOC_TAS2552 if I2C
+ select SND_SOC_TAS2770 if I2C
select SND_SOC_TAS5086 if I2C
select SND_SOC_TAS571X if I2C
select SND_SOC_TFA9879 if I2C
@@ -652,6 +653,10 @@ config SND_SOC_TAS2552
tristate "Texas Instruments TAS2552 Mono Audio amplifier"
depends on I2C

+config SND_SOC_TAS2770
+ tristate "Texas Instruments TAS2770 speaker amplifier"
+ depends on I2C
+
config SND_SOC_TAS5086
tristate "Texas Instruments TAS5086 speaker amplifier"
depends on I2C
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 5305cc6..63b8488 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -116,6 +116,7 @@ snd-soc-stac9766-objs := stac9766.o
snd-soc-sti-sas-objs := sti-sas.o
snd-soc-tas5086-objs := tas5086.o
snd-soc-tas571x-objs := tas571x.o
+snd-soc-tas2770-objs := tas2770.o
snd-soc-tfa9879-objs := tfa9879.o
snd-soc-tlv320aic23-objs := tlv320aic23.o
snd-soc-tlv320aic23-i2c-objs := tlv320aic23-i2c.o
@@ -332,6 +333,7 @@ obj-$(CONFIG_SND_SOC_STI_SAS) += snd-soc-sti-sas.o
obj-$(CONFIG_SND_SOC_TAS2552) += snd-soc-tas2552.o
obj-$(CONFIG_SND_SOC_TAS5086) += snd-soc-tas5086.o
obj-$(CONFIG_SND_SOC_TAS571X) += snd-soc-tas571x.o
+obj-$(CONFIG_SND_SOC_TAS2770) += snd-soc-tas2770.o
obj-$(CONFIG_SND_SOC_TFA9879) += snd-soc-tfa9879.o
obj-$(CONFIG_SND_SOC_TLV320AIC23) += snd-soc-tlv320aic23.o
obj-$(CONFIG_SND_SOC_TLV320AIC23_I2C) += snd-soc-tlv320aic23-i2c.o
diff --git a/sound/soc/codecs/tas2770.c b/sound/soc/codecs/tas2770.c
new file mode 100644
index 0000000..cc1481f
--- /dev/null
+++ b/sound/soc/codecs/tas2770.c
@@ -0,0 +1,954 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0
+ *
+ * ALSA SoC Texas Instruments TAS2770 20-W Digital Input Mono Class-D
+ * Audio Amplifier with Speaker I/V Sense
+ *
+ * Copyright (C) 2016-2017 Texas Instruments Incorporated - http://www.ti.com/
+ * Author: Tracy Yi <tracy-yi@ti.com>
+ * Shi Fu <shifu0704@thundersoft.com>
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
+#include <linux/firmware.h>
+#include <linux/regmap.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/slab.h>
+#include <sound/soc.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+
+#include "tas2770.h"
+
+#define TAS2770_MDELAY 0xFFFFFFFE
+#define TAS2770_CHECK_PERIOD 5000 /* 5 second */
+
+static void tas2770_reset(struct tas2770_priv *tas2770)
+{
+ if (tas2770->reset_gpio) {
+ gpiod_set_value_cansleep(tas2770->reset_gpio, 0);
+ msleep(20);
+ gpiod_set_value_cansleep(tas2770->reset_gpio, 1);
+ }
+ snd_soc_component_write(tas2770->component, TAS2770_SW_RST,
+ TAS2770_RST);
+}
+
+static int tas2770_regmap_read(struct tas2770_priv *tas2770,
+ unsigned int reg, unsigned int *value)
+{
+ int result = 0;
+ int retry_count = TAS2770_I2C_RETRY_COUNT;
+
+ while (retry_count--) {
+ result = snd_soc_component_read(tas2770->component, reg,
+ value);
+ if (!result)
+ break;
+
+ msleep(20);
+ }
+ if (!retry_count)
+ return -ETIMEDOUT;
+
+ return 0;
+}
+
+static int tas2770_set_bias_level(struct snd_soc_component *component,
+ enum snd_soc_bias_level level)
+{
+ struct tas2770_priv *tas2770 =
+ snd_soc_component_get_drvdata(component);
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ break;
+
+ case SND_SOC_BIAS_STANDBY:
+ snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
+ TAS2770_PWR_CTRL_MASK,
+ TAS2770_PWR_CTRL_ACTIVE);
+ tas2770->power_state = SND_SOC_BIAS_STANDBY;
+ break;
+
+ case SND_SOC_BIAS_PREPARE:
+ snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
+ TAS2770_PWR_CTRL_MASK,
+ TAS2770_PWR_CTRL_MUTE);
+ tas2770->power_state = SND_SOC_BIAS_PREPARE;
+ break;
+
+ case SND_SOC_BIAS_OFF:
+ snd_soc_component_update_bits(component, TAS2770_PWR_CTRL,
+ TAS2770_PWR_CTRL_MASK,
+ TAS2770_PWR_CTRL_SHUTDOWN);
+ tas2770->power_state = SND_SOC_BIAS_OFF;
+ break;
+
+ default:
+ dev_err(tas2770->dev,
+ "wrong power level setting %d\n", level);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int tas2770_codec_suspend(struct snd_soc_component *component)
+{
+ int ret;
+
+ ret = tas2770_set_bias_level(component, SND_SOC_BIAS_OFF);
+ if (ret)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int tas2770_codec_resume(struct snd_soc_component *component)
+{
+ int ret;
+
+ ret = tas2770_set_bias_level(component, SND_SOC_BIAS_STANDBY);
+ if (ret)
+ return -EINVAL;
+
+ return 0;
+}
+#else
+#define tas2770_codec_suspend NULL
+#define tas2770_codec_resume NULL
+#endif
+
+static const char * const tas2770_ASI1_src[] = {
+ "I2C offset", "Left", "Right", "LeftRightDiv2",
+};
+
+static SOC_ENUM_SINGLE_DECL(
+ tas2770_ASI1_src_enum, TAS2770_TDM_CFG_REG2,
+ 4, tas2770_ASI1_src);
+
+static const struct snd_kcontrol_new tas2770_asi1_mux =
+ SOC_DAPM_ENUM("ASI1 Source", tas2770_ASI1_src_enum);
+
+static int tas2770_dac_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component =
+ snd_soc_dapm_to_component(w->dapm);
+ struct tas2770_priv *tas2770 =
+ snd_soc_component_get_drvdata(component);
+ int ret;
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ ret = tas2770_set_bias_level(component,
+ SND_SOC_BIAS_PREPARE);
+ if (ret)
+ goto end;
+ break;
+ case SND_SOC_DAPM_PRE_PMD:
+ ret = tas2770_set_bias_level(component,
+ SND_SOC_BIAS_OFF);
+ if (ret)
+ goto end;
+ break;
+ default:
+ dev_err(tas2770->dev, "Not supported evevt\n");
+ return -EINVAL;
+ }
+
+end:
+ return ret;
+}
+
+static const struct snd_kcontrol_new isense_switch =
+ SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 3, 1, 1);
+static const struct snd_kcontrol_new vsense_switch =
+ SOC_DAPM_SINGLE("Switch", TAS2770_PWR_CTRL, 2, 1, 1);
+
+static const struct snd_soc_dapm_widget tas2770_dapm_widgets[] = {
+ SND_SOC_DAPM_AIF_IN("ASI1", "ASI1 Playback", 0, SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_MUX("ASI1 Sel", SND_SOC_NOPM, 0, 0,
+ &tas2770_asi1_mux),
+ SND_SOC_DAPM_SWITCH("ISENSE", TAS2770_PWR_CTRL, 3, 1,
+ &isense_switch),
+ SND_SOC_DAPM_SWITCH("VSENSE", TAS2770_PWR_CTRL, 2, 1,
+ &vsense_switch),
+ SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2770_dac_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+ SND_SOC_DAPM_OUTPUT("OUT"),
+ SND_SOC_DAPM_SIGGEN("VMON"),
+ SND_SOC_DAPM_SIGGEN("IMON")
+};
+
+static const struct snd_soc_dapm_route tas2770_audio_map[] = {
+ {"ASI1 Sel", "I2C offset", "ASI1"},
+ {"ASI1 Sel", "Left", "ASI1"},
+ {"ASI1 Sel", "Right", "ASI1"},
+ {"ASI1 Sel", "LeftRightDiv2", "ASI1"},
+ {"DAC", NULL, "ASI1 Sel"},
+ {"OUT", NULL, "DAC"},
+ {"ISENSE", "Switch", "IMON"},
+ {"VSENSE", "Switch", "VMON"},
+};
+
+static int tas2770_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_component *component = dai->component;
+ int ret;
+
+ if (mute)
+ ret = tas2770_set_bias_level(component, SND_SOC_BIAS_PREPARE);
+ else
+ ret = tas2770_set_bias_level(component, SND_SOC_BIAS_STANDBY);
+
+ return ret;
+}
+
+static int tas2770_set_bitwidth(struct tas2770_priv *tas2770, int bitwidth)
+{
+ int ret;
+ struct snd_soc_component *component = tas2770->component;
+
+ switch (bitwidth) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG2,
+ TAS2770_TDM_CFG_REG2_RXW_MASK,
+ TAS2770_TDM_CFG_REG2_RXW_16BITS);
+ tas2770->v_sense_slot = tas2770->i_sense_slot + 2;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG2,
+ TAS2770_TDM_CFG_REG2_RXW_MASK,
+ TAS2770_TDM_CFG_REG2_RXW_24BITS);
+ tas2770->v_sense_slot = tas2770->i_sense_slot + 4;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG2,
+ TAS2770_TDM_CFG_REG2_RXW_MASK,
+ TAS2770_TDM_CFG_REG2_RXW_32BITS);
+ tas2770->v_sense_slot = tas2770->i_sense_slot + 4;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ tas2770->channel_size = bitwidth;
+
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG5,
+ TAS2770_TDM_CFG_REG5_VSNS_MASK |
+ TAS2770_TDM_CFG_REG5_50_MASK,
+ TAS2770_TDM_CFG_REG5_VSNS_ENABLE |
+ tas2770->v_sense_slot);
+ if (ret)
+ goto end;
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG6,
+ TAS2770_TDM_CFG_REG6_ISNS_MASK |
+ TAS2770_TDM_CFG_REG6_50_MASK,
+ TAS2770_TDM_CFG_REG6_ISNS_ENABLE |
+ tas2770->i_sense_slot);
+
+end:
+ return ret;
+}
+
+static int tas2770_set_samplerate(struct tas2770_priv *tas2770,
+ int samplerate)
+{
+ int ret;
+ struct snd_soc_component *component = tas2770->component;
+
+ switch (samplerate) {
+ case 48000:
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_SMP_MASK,
+ TAS2770_TDM_CFG_REG0_SMP_48KHZ);
+ if (ret)
+ goto end;
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_31_MASK,
+ TAS2770_TDM_CFG_REG0_31_44_1_48KHZ);
+ if (ret)
+ goto end;
+ break;
+ case 44100:
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_SMP_MASK,
+ TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
+ if (ret)
+ goto end;
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_31_MASK,
+ TAS2770_TDM_CFG_REG0_31_44_1_48KHZ);
+ if (ret)
+ goto end;
+ break;
+ case 96000:
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_SMP_MASK,
+ TAS2770_TDM_CFG_REG0_SMP_48KHZ);
+ if (ret)
+ goto end;
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_31_MASK,
+ TAS2770_TDM_CFG_REG0_31_88_2_96KHZ);
+ break;
+ case 88200:
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_SMP_MASK,
+ TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
+ if (ret)
+ goto end;
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_31_MASK,
+ TAS2770_TDM_CFG_REG0_31_88_2_96KHZ);
+ break;
+ case 19200:
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_SMP_MASK,
+ TAS2770_TDM_CFG_REG0_SMP_48KHZ);
+ if (ret)
+ goto end;
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_31_MASK,
+ TAS2770_TDM_CFG_REG0_31_176_4_192KHZ);
+ if (ret)
+ goto end;
+ break;
+ case 17640:
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_SMP_MASK,
+ TAS2770_TDM_CFG_REG0_SMP_44_1KHZ);
+ if (ret)
+ goto end;
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG0,
+ TAS2770_TDM_CFG_REG0_31_MASK,
+ TAS2770_TDM_CFG_REG0_31_176_4_192KHZ);
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+end:
+ if (!ret)
+ tas2770->sampling_rate = samplerate;
+ return ret;
+}
+
+static int tas2770_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas2770_priv *tas2770 =
+ snd_soc_component_get_drvdata(component);
+ int ret;
+
+ ret = tas2770_set_bitwidth(tas2770, params_format(params));
+ if (ret < 0)
+ goto end;
+
+
+ ret = tas2770_set_samplerate(tas2770, params_rate(params));
+
+end:
+ return ret;
+}
+
+static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0;
+ int ret;
+ int value = 0;
+ struct snd_soc_component *component = dai->component;
+ struct tas2770_priv *tas2770 =
+ snd_soc_component_get_drvdata(component);
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBS_CFS:
+ break;
+ default:
+ dev_err(tas2770->dev, "ASI format master is not found\n");
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ case SND_SOC_DAIFMT_NB_NF:
+ asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_RSING;
+ break;
+ case SND_SOC_DAIFMT_IB_NF:
+ asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_FALING;
+ break;
+ default:
+ dev_err(tas2770->dev, "ASI format Inverse is not found\n");
+ return -EINVAL;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1,
+ TAS2770_TDM_CFG_REG1_RX_MASK,
+ asi_cfg_1);
+ if (ret)
+ return ret;
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case (SND_SOC_DAIFMT_I2S):
+ tdm_rx_start_slot = 1;
+ break;
+ case (SND_SOC_DAIFMT_DSP_A):
+ tdm_rx_start_slot = 0;
+ break;
+ case (SND_SOC_DAIFMT_DSP_B):
+ tdm_rx_start_slot = 1;
+ break;
+ case (SND_SOC_DAIFMT_LEFT_J):
+ tdm_rx_start_slot = 0;
+ break;
+ default:
+ dev_err(tas2770->dev,
+ "DAI Format is not found, fmt=0x%x\n", fmt);
+ return -EINVAL;
+ }
+
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG1,
+ TAS2770_TDM_CFG_REG1_MASK,
+ (tdm_rx_start_slot << TAS2770_TDM_CFG_REG1_51_SHIFT));
+ if (ret)
+ return ret;
+
+ value = snd_soc_component_read32(component, TAS2770_TDM_CFG_REG3);
+
+ tas2770->asi_format = fmt;
+
+ return 0;
+}
+
+static int tas2770_set_dai_tdm_slot(struct snd_soc_dai *dai,
+ unsigned int tx_mask,
+ unsigned int rx_mask,
+ int slots, int slot_width)
+{
+ struct snd_soc_component *component = dai->component;
+ struct tas2770_priv *tas2770 =
+ snd_soc_component_get_drvdata(component);
+ int left_slot, right_slot;
+ int ret;
+
+ if (tx_mask == 0 || rx_mask != 0)
+ return -EINVAL;
+
+ if (slots == 1) {
+ if (tx_mask != 1)
+ return -EINVAL;
+ left_slot = 0;
+ right_slot = 0;
+ } else {
+ left_slot = __ffs(tx_mask);
+ tx_mask &= ~(1 << left_slot);
+ if (tx_mask == 0) {
+ right_slot = left_slot;
+ } else {
+ right_slot = __ffs(tx_mask);
+ tx_mask &= ~(1 << right_slot);
+ }
+ }
+
+ if (tx_mask != 0 || left_slot >= slots || right_slot >= slots)
+ return -EINVAL;
+
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3,
+ TAS2770_TDM_CFG_REG3_30_MASK,
+ (left_slot << TAS2770_TDM_CFG_REG3_30_SHIFT));
+ if (ret)
+ return ret;
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG3,
+ TAS2770_TDM_CFG_REG3_RXS_MASK,
+ (right_slot << TAS2770_TDM_CFG_REG3_RXS_SHIFT));
+ if (ret)
+ return ret;
+
+ switch (slot_width) {
+ case 16:
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG2,
+ TAS2770_TDM_CFG_REG2_RXS_MASK,
+ TAS2770_TDM_CFG_REG2_RXS_16BITS);
+ break;
+
+ case 24:
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG2,
+ TAS2770_TDM_CFG_REG2_RXS_MASK,
+ TAS2770_TDM_CFG_REG2_RXS_24BITS);
+ break;
+
+ case 32:
+ ret = snd_soc_component_update_bits(component,
+ TAS2770_TDM_CFG_REG2,
+ TAS2770_TDM_CFG_REG2_RXS_MASK,
+ TAS2770_TDM_CFG_REG2_RXS_32BITS);
+ break;
+
+ case 0:
+ /* Do not change slot width */
+ ret = 0;
+ break;
+
+ default:
+ ret = -EINVAL;
+ }
+
+ if (!ret)
+ tas2770->slot_width = slot_width;
+
+ return ret;
+}
+
+static struct snd_soc_dai_ops tas2770_dai_ops = {
+ .digital_mute = tas2770_mute,
+ .hw_params = tas2770_hw_params,
+ .set_fmt = tas2770_set_fmt,
+ .set_tdm_slot = tas2770_set_dai_tdm_slot,
+};
+
+#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 = 2,
+ .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_rates = 1,
+ },
+};
+
+static int tas2770_codec_probe(struct snd_soc_component *component)
+{
+ struct tas2770_priv *tas2770 =
+ snd_soc_component_get_drvdata(component);
+
+ tas2770->component = component;
+
+ 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("Amp Output Gain", TAS2770_PLAY_CFG_REG0,
+ 0, 0x14, 0,
+ tas2770_digital_tlv),
+ SOC_SINGLE_TLV("Playback Volume", TAS2770_PLAY_CFG_REG2,
+ 0, TAS2770_PLAY_CFG_REG2_VMAX, 1,
+ tas2770_playback_volume),
+};
+
+static const struct snd_soc_component_driver soc_component_driver_tas2770 = {
+ .probe = tas2770_codec_probe,
+ .suspend = tas2770_codec_suspend,
+ .resume = tas2770_codec_resume,
+ .set_bias_level = tas2770_set_bias_level,
+ .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,
+ .non_legacy_dai_naming = 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 void tas2770_load_config(struct tas2770_priv *tas2770)
+{
+ int ret;
+ struct snd_soc_component *component = tas2770->component;
+
+ tas2770_reset(tas2770);
+ snd_soc_component_write(component, TAS2770_SW_RST,
+ TAS2770_RST);
+
+ ret = tas2770_set_bitwidth(tas2770, tas2770->channel_size);
+ if (ret)
+ goto error_out;
+
+ ret = tas2770_set_samplerate(tas2770, tas2770->sampling_rate);
+ if (ret)
+ goto error_out;
+
+ ret = tas2770_set_bias_level(component, tas2770->power_state);
+ if (ret)
+ goto error_out;
+
+error_out:
+ return;
+}
+
+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 irqreturn_t tas2770_irq_handler(int irq, void *dev_id)
+{
+ struct tas2770_priv *tas2770 = (struct tas2770_priv *)dev_id;
+ struct snd_soc_component *component = tas2770->component;
+ unsigned int device_status_1 = 0, device_status_2 = 0;
+ int result;
+
+ if (tas2770->runtime_suspend)
+ goto end;
+
+ if (tas2770->power_state == TAS2770_POWER_SHUTDOWN)
+ goto end;
+
+ result = snd_soc_component_write(component, TAS2770_INT_MASK_REG0,
+ TAS2770_INT_MASK_REG0_DISABLE);
+ if (result)
+ goto reload;
+ result = snd_soc_component_write(component, TAS2770_INT_MASK_REG1,
+ TAS2770_INT_MASK_REG1_DISABLE);
+ if (result)
+ goto reload;
+
+ result = tas2770_regmap_read(tas2770,
+ TAS2770_LAT_INT_REG0, &device_status_1);
+ if (!result && (device_status_1 & 0x3)) {
+ if (device_status_1 &
+ TAS2770_LAT_INT_REG0_OCE_FLG) {
+ tas2770->err_code |= ERROR_OVER_CURRENT;
+ dev_err(tas2770->dev, "SPK over current!\n");
+ } else {
+ tas2770->err_code &= ~ERROR_OVER_CURRENT;
+ }
+
+ if (device_status_1 &
+ TAS2770_LAT_INT_REG0_OTE_FLG) {
+ tas2770->err_code |= ERROR_DIE_OVERTEMP;
+ dev_err(tas2770->dev, "die over temperature!\n");
+ } else {
+ tas2770->err_code &= ~ERROR_DIE_OVERTEMP;
+ }
+ }
+
+ result = tas2770_regmap_read(tas2770,
+ TAS2770_LAT_INT_REG1, &device_status_2);
+ if (!result && (device_status_2 & 0x0f)) {
+ if (device_status_2 &
+ TAS2770_LAT_INT_REG1_VBA_TOV) {
+ tas2770->err_code |= ERROR_OVER_VOLTAGE;
+ dev_err(tas2770->dev, "SPK over voltage!\n");
+ } else {
+ tas2770->err_code &= ~ERROR_OVER_VOLTAGE;
+ }
+
+ if (device_status_2 &
+ TAS2770_LAT_INT_REG1_VBA_TUV) {
+ tas2770->err_code |= ERROR_UNDER_VOLTAGE;
+ dev_err(tas2770->dev, "SPK under voltage!\n");
+ } else {
+ tas2770->err_code &= ~ERROR_UNDER_VOLTAGE;
+ }
+
+ if (device_status_2 &
+ TAS2770_LAT_INT_REG1_BOUT_FLG) {
+ tas2770->err_code |= ERROR_BROWNOUT;
+ dev_err(tas2770->dev, "brownout!\n");
+ } else {
+ tas2770->err_code &= ~ERROR_BROWNOUT;
+ }
+ }
+
+ result = snd_soc_component_write(component,
+ TAS2770_INT_MASK_REG0, TAS2770_INT_REG0_DEFAULT);
+ if (result)
+ goto reload;
+
+ result = snd_soc_component_write(component,
+ TAS2770_INT_MASK_REG1, TAS2770_INT_REG1_DEFAULT);
+ if (result)
+ goto reload;
+
+ goto end;
+
+reload:
+ /* hardware reset and reload */
+ tas2770_load_config(tas2770);
+
+end:
+ return IRQ_HANDLED;
+}
+
+static int tas2770_parse_dt(struct device *dev, struct tas2770_priv *tas2770)
+{
+ int rc = 0;
+
+ rc = fwnode_property_read_u32(dev->fwnode, "ti,asi-format",
+ &tas2770->asi_format);
+ if (rc) {
+ dev_err(tas2770->dev, "Looking up %s property failed %d\n",
+ "ti,asi-format", rc);
+ goto end;
+ }
+
+ rc = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
+ &tas2770->i_sense_slot);
+ if (rc) {
+ dev_err(tas2770->dev, "Looking up %s property failed %d\n",
+ "ti,imon-slot-no", rc);
+ goto end;
+ }
+
+ rc = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
+ &tas2770->v_sense_slot);
+ if (rc) {
+ dev_err(tas2770->dev, "Looking up %s property failed %d\n",
+ "ti,vmon-slot-no", rc);
+ goto end;
+ }
+
+end:
+ return rc;
+}
+
+static int tas2770_i2c_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ 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;
+ tas2770->irq_gpio = client->irq;
+
+ i2c_set_clientdata(client, tas2770);
+ dev_set_drvdata(&client->dev, tas2770);
+ tas2770->power_state = TAS2770_POWER_SHUTDOWN;
+
+ 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);
+ goto end;
+ }
+
+ 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__);
+ goto end;
+ }
+ }
+
+ tas2770->reset_gpio = devm_gpiod_get_optional(tas2770->dev,
+ "reset-gpio",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(tas2770->reset_gpio)) {
+ if (PTR_ERR(tas2770->reset_gpio) == -EPROBE_DEFER) {
+ tas2770->reset_gpio = NULL;
+ return -EPROBE_DEFER;
+ }
+ }
+
+ if (tas2770->irq_gpio > 0) {
+ result = devm_request_threaded_irq(tas2770->dev,
+ tas2770->irq_gpio,
+ NULL, tas2770_irq_handler,
+ IRQF_TRIGGER_FALLING | IRQF_ONESHOT, client->name,
+ tas2770);
+ if (result) {
+ dev_err(tas2770->dev, "Unable to request IRQ\n");
+ return result;
+ }
+ }
+
+ tas2770->channel_size = 0;
+ tas2770->slot_width = 0;
+
+ tas2770_reset(tas2770);
+
+ result = tas2770_register_codec(tas2770);
+ if (result)
+ dev_err(tas2770->dev, "Register codec failed.\n");
+
+end:
+ return result;
+}
+
+static int tas2770_i2c_remove(struct i2c_client *client)
+{
+ pm_runtime_disable(&client->dev);
+ return 0;
+}
+
+
+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",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(tas2770_of_match),
+ },
+ .probe = tas2770_i2c_probe,
+ .remove = tas2770_i2c_remove,
+ .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");
diff --git a/sound/soc/codecs/tas2770.h b/sound/soc/codecs/tas2770.h
new file mode 100644
index 0000000..bf59dc2
--- /dev/null
+++ b/sound/soc/codecs/tas2770.h
@@ -0,0 +1,166 @@
+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * ALSA SoC TAS2770 codec driver
+ *
+ * Copyright (C) 2016-2017 Texas Instruments Incorporated - http://www.ti.com/
+ */
+#ifndef __TAS2770__
+#define __TAS2770__
+
+/* Book Control Register (available in page0 of each book) */
+#define TAS2770_BOOKCTL_PAGE 0
+#define TAS2770_BOOKCTL_REG 127
+#define TAS2770_REG(page, reg) ((page * 128) + reg)
+ /* Page */
+#define TAS2770_PAGE TAS2770_REG(0X0, 0x00)
+#define TAS2770_PAGE_PAGE_MASK 255
+ /* Software Reset */
+#define TAS2770_SW_RST TAS2770_REG(0X0, 0x01)
+#define TAS2770_RST BIT(0)
+ /* Power Control */
+#define TAS2770_PWR_CTRL TAS2770_REG(0X0, 0x02)
+#define TAS2770_PWR_CTRL_MASK 0x3
+#define TAS2770_PWR_CTRL_ACTIVE 0x0
+#define TAS2770_PWR_CTRL_MUTE BIT(0)
+#define TAS2770_PWR_CTRL_SHUTDOWN 0x2
+ /* Playback Configuration Reg0 */
+#define TAS2770_PLAY_CFG_REG0 TAS2770_REG(0X0, 0x03)
+ /* Playback Configuration Reg1 */
+#define TAS2770_PLAY_CFG_REG1 TAS2770_REG(0X0, 0x04)
+ /* Playback Configuration Reg2 */
+#define TAS2770_PLAY_CFG_REG2 TAS2770_REG(0X0, 0x05)
+#define TAS2770_PLAY_CFG_REG2_VMAX 0xc9
+ /* Misc Configuration Reg0 */
+#define TAS2770_MSC_CFG_REG0 TAS2770_REG(0X0, 0x07)
+ /* TDM Configuration Reg0 */
+#define TAS2770_TDM_CFG_REG0 TAS2770_REG(0X0, 0x0A)
+#define TAS2770_TDM_CFG_REG0_SMP_MASK BIT(5)
+#define TAS2770_TDM_CFG_REG0_SMP_48KHZ 0x0
+#define TAS2770_TDM_CFG_REG0_SMP_44_1KHZ BIT(5)
+#define TAS2770_TDM_CFG_REG0_31_MASK 0xe
+#define TAS2770_TDM_CFG_REG0_31_44_1_48KHZ 0x6
+#define TAS2770_TDM_CFG_REG0_31_88_2_96KHZ 0x8
+#define TAS2770_TDM_CFG_REG0_31_176_4_192KHZ 0xa
+ /* TDM Configuration Reg1 */
+#define TAS2770_TDM_CFG_REG1 TAS2770_REG(0X0, 0x0B)
+#define TAS2770_TDM_CFG_REG1_MASK 0x3e
+#define TAS2770_TDM_CFG_REG1_51_SHIFT 1
+#define TAS2770_TDM_CFG_REG1_RX_MASK BIT(0)
+#define TAS2770_TDM_CFG_REG1_RX_RSING 0x0
+#define TAS2770_TDM_CFG_REG1_RX_FALING BIT(0)
+ /* TDM Configuration Reg2 */
+#define TAS2770_TDM_CFG_REG2 TAS2770_REG(0X0, 0x0C)
+#define TAS2770_TDM_CFG_REG2_RXW_MASK 0xc
+#define TAS2770_TDM_CFG_REG2_RXW_16BITS 0x0
+#define TAS2770_TDM_CFG_REG2_RXW_24BITS 0x8
+#define TAS2770_TDM_CFG_REG2_RXW_32BITS 0xc
+#define TAS2770_TDM_CFG_REG2_RXS_MASK 0x3
+#define TAS2770_TDM_CFG_REG2_RXS_16BITS 0x0
+#define TAS2770_TDM_CFG_REG2_RXS_24BITS BIT(0)
+#define TAS2770_TDM_CFG_REG2_RXS_32BITS 0x2
+ /* TDM Configuration Reg3 */
+#define TAS2770_TDM_CFG_REG3 TAS2770_REG(0X0, 0x0D)
+#define TAS2770_TDM_CFG_REG3_RXS_MASK 0xf0
+#define TAS2770_TDM_CFG_REG3_RXS_SHIFT 0x4
+#define TAS2770_TDM_CFG_REG3_30_MASK 0xf
+#define TAS2770_TDM_CFG_REG3_30_SHIFT 0
+ /* TDM Configuration Reg5 */
+#define TAS2770_TDM_CFG_REG5 TAS2770_REG(0X0, 0x0F)
+#define TAS2770_TDM_CFG_REG5_VSNS_MASK BIT(6)
+#define TAS2770_TDM_CFG_REG5_VSNS_ENABLE BIT(6)
+#define TAS2770_TDM_CFG_REG5_50_MASK 0x3f
+ /* TDM Configuration Reg6 */
+#define TAS2770_TDM_CFG_REG6 TAS2770_REG(0X0, 0x10)
+#define TAS2770_TDM_CFG_REG6_ISNS_MASK BIT(6)
+#define TAS2770_TDM_CFG_REG6_ISNS_ENABLE BIT(6)
+#define TAS2770_TDM_CFG_REG6_50_MASK 0x3f
+ /* Brown Out Prevention Reg0 */
+#define TAS2770_BO_PRV_REG0 TAS2770_REG(0X0, 0x1B)
+ /* Interrupt MASK Reg0 */
+#define TAS2770_INT_MASK_REG0 TAS2770_REG(0X0, 0x20)
+#define TAS2770_INT_REG0_DEFAULT 0xfc
+#define TAS2770_INT_MASK_REG0_DISABLE 0xff
+ /* Interrupt MASK Reg1 */
+#define TAS2770_INT_MASK_REG1 TAS2770_REG(0X0, 0x21)
+#define TAS2770_INT_REG1_DEFAULT 0xb1
+#define TAS2770_INT_MASK_REG1_DISABLE 0xff
+ /* Live-Interrupt Reg0 */
+#define TAS2770_LVE_INT_REG0 TAS2770_REG(0X0, 0x22)
+ /* Live-Interrupt Reg1 */
+#define TAS2770_LVE_INT_REG1 TAS2770_REG(0X0, 0x23)
+ /* Latched-Interrupt Reg0 */
+#define TAS2770_LAT_INT_REG0 TAS2770_REG(0X0, 0x24)
+#define TAS2770_LAT_INT_REG0_OCE_FLG BIT(1)
+#define TAS2770_LAT_INT_REG0_OTE_FLG BIT(0)
+ /* Latched-Interrupt Reg1 */
+#define TAS2770_LAT_INT_REG1 TAS2770_REG(0X0, 0x25)
+#define TAS2770_LAT_INT_REG1_VBA_TOV BIT(3)
+#define TAS2770_LAT_INT_REG1_VBA_TUV BIT(2)
+#define TAS2770_LAT_INT_REG1_BOUT_FLG BIT(1)
+ /* VBAT MSB */
+#define TAS2770_VBAT_MSB TAS2770_REG(0X0, 0x27)
+ /* VBAT LSB */
+#define TAS2770_VBAT_LSB TAS2770_REG(0X0, 0x28)
+ /* TEMP MSB */
+#define TAS2770_TEMP_MSB TAS2770_REG(0X0, 0x29)
+ /* TEMP LSB */
+#define TAS2770_TEMP_LSB TAS2770_REG(0X0, 0x2A)
+ /* Interrupt Configuration */
+#define TAS2770_INT_CFG TAS2770_REG(0X0, 0x30)
+ /* Misc IRQ */
+#define TAS2770_MISC_IRQ TAS2770_REG(0X0, 0x32)
+ /* Clock Configuration */
+#define TAS2770_CLK_CGF TAS2770_REG(0X0, 0x3C)
+ /* TDM Clock detection monitor */
+#define TAS2770_TDM_CLK_DETC TAS2770_REG(0X0, 0x77)
+ /* Revision and PG ID */
+#define TAS2770_REV_AND_GPID TAS2770_REG(0X0, 0x7D)
+
+#define TAS2770_POWER_ACTIVE 0
+#define TAS2770_POWER_MUTE 1
+#define TAS2770_POWER_SHUTDOWN 2
+#define ERROR_OVER_CURRENT 0x0000001
+#define ERROR_DIE_OVERTEMP 0x0000002
+#define ERROR_OVER_VOLTAGE 0x0000004
+#define ERROR_UNDER_VOLTAGE 0x0000008
+#define ERROR_BROWNOUT 0x0000010
+#define ERROR_CLASSD_PWR 0x0000020
+#define TAS2770_SLOT_16BIT 16
+#define TAS2770_SLOT_32BIT 32
+#define TAS2770_I2C_RETRY_COUNT 3
+
+struct tas2770_register {
+ int book;
+ int page;
+ int reg;
+};
+
+struct tas2770_dai_cfg {
+ unsigned int dai_fmt;
+ unsigned int tdm_delay;
+};
+
+struct tas2770_priv {
+ struct device *dev;
+ struct regmap *regmap;
+ struct snd_soc_codec *codec;
+ struct snd_soc_component *component;
+ struct mutex dev_lock;
+ struct hrtimer mtimer;
+ int power_state;
+ int asi_format;
+ struct gpio_desc *reset_gpio;
+ int irq_gpio;
+ bool irq_enable;
+ int sampling_rate;
+ int frame_size;
+ int channel_size;
+ int slot_width;
+ int v_sense_slot;
+ int i_sense_slot;
+ bool runtime_suspend;
+ unsigned int err_code;
+ struct mutex codec_lock;
+};
+
+#endif /* __TAS2770__ */
--
2.7.4
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  Last update: 2019-09-11 12:27    [W:0.074 / U:12.100 seconds]
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