ASoC: tas2562: Introduce the TAS2562 amplifier
authorDan Murphy <dmurphy@ti.com>
Tue, 8 Oct 2019 18:15:17 +0000 (13:15 -0500)
committerMark Brown <broonie@kernel.org>
Thu, 10 Oct 2019 14:19:31 +0000 (15:19 +0100)
Introduce the Texas Instruments TAS2562 amplifier driver
with I/V sense for loud speaker applications.

http://www.ti.com/lit/gpn/tas2562

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Link: https://lore.kernel.org/r/20191008181517.5332-2-dmurphy@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
sound/soc/codecs/Kconfig
sound/soc/codecs/Makefile
sound/soc/codecs/tas2562.c [new file with mode: 0644]
sound/soc/codecs/tas2562.h [new file with mode: 0644]

index ae213c6392ecebbcf3dd20fb6578a918cb5022d9..f4747ebc251ea410a0bda11bf7866599043f64c2 100644 (file)
@@ -181,6 +181,7 @@ 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_TAS2562 if I2C
        select SND_SOC_TAS2770 if I2C
        select SND_SOC_TAS5086 if I2C
        select SND_SOC_TAS571X if I2C
@@ -1133,6 +1134,10 @@ config SND_SOC_TAS2552
        tristate "Texas Instruments TAS2552 Mono Audio amplifier"
        depends on I2C
 
+config SND_SOC_TAS2562
+       tristate "Texas Instruments TAS2562 Mono Audio amplifier"
+       depends on I2C
+
 config SND_SOC_TAS2770
        tristate "Texas Instruments TAS2770 speaker amplifier"
        depends on I2C
index 2118407a1dd5a2c409d9fff058c6e472dc85e8b8..ddfd07071925c2d8581f9a9a09ccfa2086f1c6c4 100644 (file)
@@ -284,6 +284,7 @@ snd-soc-max98504-objs := max98504.o
 snd-soc-simple-amplifier-objs := simple-amplifier.o
 snd-soc-tpa6130a2-objs := tpa6130a2.o
 snd-soc-tas2552-objs := tas2552.o
+snd-soc-tas2562-objs := tas2562.o
 
 obj-$(CONFIG_SND_SOC_88PM860X) += snd-soc-88pm860x.o
 obj-$(CONFIG_SND_SOC_AB8500_CODEC)     += snd-soc-ab8500-codec.o
@@ -481,6 +482,7 @@ obj-$(CONFIG_SND_SOC_STA529)   += snd-soc-sta529.o
 obj-$(CONFIG_SND_SOC_STAC9766) += snd-soc-stac9766.o
 obj-$(CONFIG_SND_SOC_STI_SAS)  += snd-soc-sti-sas.o
 obj-$(CONFIG_SND_SOC_TAS2552)  += snd-soc-tas2552.o
+obj-$(CONFIG_SND_SOC_TAS2562)  += snd-soc-tas2562.o
 obj-$(CONFIG_SND_SOC_TAS5086)  += snd-soc-tas5086.o
 obj-$(CONFIG_SND_SOC_TAS571X)  += snd-soc-tas571x.o
 obj-$(CONFIG_SND_SOC_TAS5720)  += snd-soc-tas5720.o
diff --git a/sound/soc/codecs/tas2562.c b/sound/soc/codecs/tas2562.c
new file mode 100644 (file)
index 0000000..729acd8
--- /dev/null
@@ -0,0 +1,590 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Driver for the Texas Instruments TAS2562 CODEC
+// Copyright (C) 2019 Texas Instruments Inc.
+
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/gpio/consumer.h>
+#include <linux/regulator/consumer.h>
+#include <linux/delay.h>
+
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/tlv.h>
+
+#include "tas2562.h"
+
+#define TAS2562_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE |\
+                        SNDRV_PCM_FORMAT_S32_LE)
+
+struct tas2562_data {
+       struct snd_soc_component *component;
+       struct gpio_desc *sdz_gpio;
+       struct regmap *regmap;
+       struct device *dev;
+       struct i2c_client *client;
+       int v_sense_slot;
+       int i_sense_slot;
+};
+
+static int tas2562_set_bias_level(struct snd_soc_component *component,
+                                enum snd_soc_bias_level level)
+{
+       struct tas2562_data *tas2562 =
+                       snd_soc_component_get_drvdata(component);
+
+       switch (level) {
+       case SND_SOC_BIAS_ON:
+               snd_soc_component_update_bits(component,
+                       TAS2562_PWR_CTRL,
+                       TAS2562_MODE_MASK, TAS2562_ACTIVE);
+               break;
+       case SND_SOC_BIAS_STANDBY:
+       case SND_SOC_BIAS_PREPARE:
+               snd_soc_component_update_bits(component,
+                       TAS2562_PWR_CTRL,
+                       TAS2562_MODE_MASK, TAS2562_MUTE);
+               break;
+       case SND_SOC_BIAS_OFF:
+               snd_soc_component_update_bits(component,
+                       TAS2562_PWR_CTRL,
+                       TAS2562_MODE_MASK, TAS2562_SHUTDOWN);
+               break;
+
+       default:
+               dev_err(tas2562->dev,
+                               "wrong power level setting %d\n", level);
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+static int tas2562_set_samplerate(struct tas2562_data *tas2562, int samplerate)
+{
+       int samp_rate;
+       int ramp_rate;
+
+       switch (samplerate) {
+       case 7350:
+               ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
+               samp_rate = TAS2562_TDM_CFG0_SAMPRATE_7305_8KHZ;
+               break;
+       case 8000:
+               ramp_rate = 0;
+               samp_rate = TAS2562_TDM_CFG0_SAMPRATE_7305_8KHZ;
+               break;
+       case 14700:
+               ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
+               samp_rate = TAS2562_TDM_CFG0_SAMPRATE_14_7_16KHZ;
+               break;
+       case 16000:
+               ramp_rate = 0;
+               samp_rate = TAS2562_TDM_CFG0_SAMPRATE_14_7_16KHZ;
+               break;
+       case 22050:
+               ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
+               samp_rate = TAS2562_TDM_CFG0_SAMPRATE_22_05_24KHZ;
+               break;
+       case 24000:
+               ramp_rate = 0;
+               samp_rate = TAS2562_TDM_CFG0_SAMPRATE_22_05_24KHZ;
+               break;
+       case 29400:
+               ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
+               samp_rate = TAS2562_TDM_CFG0_SAMPRATE_29_4_32KHZ;
+               break;
+       case 32000:
+               ramp_rate = 0;
+               samp_rate = TAS2562_TDM_CFG0_SAMPRATE_29_4_32KHZ;
+               break;
+       case 44100:
+               ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
+               samp_rate = TAS2562_TDM_CFG0_SAMPRATE_44_1_48KHZ;
+               break;
+       case 48000:
+               ramp_rate = 0;
+               samp_rate = TAS2562_TDM_CFG0_SAMPRATE_44_1_48KHZ;
+               break;
+       case 88200:
+               ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
+               samp_rate = TAS2562_TDM_CFG0_SAMPRATE_88_2_96KHZ;
+               break;
+       case 96000:
+               ramp_rate = 0;
+               samp_rate = TAS2562_TDM_CFG0_SAMPRATE_88_2_96KHZ;
+               break;
+       case 176400:
+               ramp_rate = TAS2562_TDM_CFG0_RAMPRATE_44_1;
+               samp_rate = TAS2562_TDM_CFG0_SAMPRATE_176_4_192KHZ;
+               break;
+       case 192000:
+               ramp_rate = 0;
+               samp_rate = TAS2562_TDM_CFG0_SAMPRATE_176_4_192KHZ;
+               break;
+       default:
+               dev_info(tas2562->dev, "%s, unsupported sample rate, %d\n",
+                       __func__, samplerate);
+               return -EINVAL;
+       }
+
+       snd_soc_component_update_bits(tas2562->component, TAS2562_TDM_CFG0,
+               TAS2562_TDM_CFG0_RAMPRATE_MASK, ramp_rate);
+       snd_soc_component_update_bits(tas2562->component, TAS2562_TDM_CFG0,
+               TAS2562_TDM_CFG0_SAMPRATE_MASK, samp_rate);
+
+       return 0;
+}
+
+static int tas2562_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 tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
+       int ret = 0;
+
+       switch (slot_width) {
+       case 16:
+               ret = snd_soc_component_update_bits(component,
+                                                   TAS2562_TDM_CFG2,
+                                                   TAS2562_TDM_CFG2_RXLEN_MASK,
+                                                   TAS2562_TDM_CFG2_RXLEN_16B);
+               break;
+       case 24:
+               ret = snd_soc_component_update_bits(component,
+                                                   TAS2562_TDM_CFG2,
+                                                   TAS2562_TDM_CFG2_RXLEN_MASK,
+                                                   TAS2562_TDM_CFG2_RXLEN_24B);
+               break;
+       case 32:
+               ret = snd_soc_component_update_bits(component,
+                                                   TAS2562_TDM_CFG2,
+                                                   TAS2562_TDM_CFG2_RXLEN_MASK,
+                                                   TAS2562_TDM_CFG2_RXLEN_32B);
+               break;
+
+       case 0:
+               /* Do not change slot width */
+               break;
+       default:
+               dev_err(tas2562->dev, "slot width not supported");
+               ret = -EINVAL;
+       }
+
+       if (ret < 0)
+               return ret;
+
+       return 0;
+}
+
+static int tas2562_set_bitwidth(struct tas2562_data *tas2562, int bitwidth)
+{
+       int ret;
+
+       switch (bitwidth) {
+       case SNDRV_PCM_FORMAT_S16_LE:
+               snd_soc_component_update_bits(tas2562->component,
+                                             TAS2562_TDM_CFG2,
+                                             TAS2562_TDM_CFG2_RXWLEN_MASK,
+                                             TAS2562_TDM_CFG2_RXWLEN_16B);
+               tas2562->v_sense_slot = tas2562->i_sense_slot + 2;
+               break;
+       case SNDRV_PCM_FORMAT_S24_LE:
+               snd_soc_component_update_bits(tas2562->component,
+                                             TAS2562_TDM_CFG2,
+                                             TAS2562_TDM_CFG2_RXWLEN_MASK,
+                                             TAS2562_TDM_CFG2_RXWLEN_24B);
+               tas2562->v_sense_slot = tas2562->i_sense_slot + 4;
+               break;
+       case SNDRV_PCM_FORMAT_S32_LE:
+               snd_soc_component_update_bits(tas2562->component,
+                                             TAS2562_TDM_CFG2,
+                                             TAS2562_TDM_CFG2_RXWLEN_MASK,
+                                             TAS2562_TDM_CFG2_RXWLEN_32B);
+               tas2562->v_sense_slot = tas2562->i_sense_slot + 4;
+               break;
+
+       default:
+               dev_info(tas2562->dev, "Not supported params format\n");
+       }
+
+       ret = snd_soc_component_update_bits(tas2562->component,
+               TAS2562_TDM_CFG5,
+               TAS2562_TDM_CFG5_VSNS_EN | TAS2562_TDM_CFG5_VSNS_SLOT_MASK,
+               TAS2562_TDM_CFG5_VSNS_EN | tas2562->v_sense_slot);
+       if (ret < 0)
+               return ret;
+
+       ret = snd_soc_component_update_bits(tas2562->component,
+               TAS2562_TDM_CFG6,
+               TAS2562_TDM_CFG6_ISNS_EN | TAS2562_TDM_CFG6_ISNS_SLOT_MASK,
+               TAS2562_TDM_CFG6_ISNS_EN | tas2562->i_sense_slot);
+       if (ret < 0)
+               return ret;
+
+       return 0;
+}
+
+static int tas2562_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 tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
+       int ret;
+
+       ret = tas2562_set_bitwidth(tas2562, params_format(params));
+       if (ret) {
+               dev_err(tas2562->dev, "set bitwidth failed, %d\n", ret);
+               return ret;
+       }
+
+       ret = tas2562_set_samplerate(tas2562, params_rate(params));
+       if (ret)
+               dev_err(tas2562->dev, "set bitwidth failed, %d\n", ret);
+
+       return ret;
+}
+
+static int tas2562_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+       struct snd_soc_component *component = dai->component;
+       struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
+       u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0;
+       int ret;
+
+       switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+       case SND_SOC_DAIFMT_NB_NF:
+               asi_cfg_1 = 0;
+               break;
+       case SND_SOC_DAIFMT_IB_NF:
+               asi_cfg_1 |= TAS2562_TDM_CFG1_RX_FALLING;
+               break;
+       default:
+               dev_err(tas2562->dev, "ASI format Inverse is not found\n");
+               return -EINVAL;
+       }
+
+       ret = snd_soc_component_update_bits(component, TAS2562_TDM_CFG1,
+                                           TAS2562_TDM_CFG1_RX_EDGE_MASK,
+                                           asi_cfg_1);
+       if (ret < 0) {
+               dev_err(tas2562->dev, "Failed to set RX edge\n");
+               return ret;
+       }
+
+       switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+       case (SND_SOC_DAIFMT_I2S):
+       case (SND_SOC_DAIFMT_DSP_A):
+       case (SND_SOC_DAIFMT_DSP_B):
+               tdm_rx_start_slot = BIT(1);
+               break;
+       case (SND_SOC_DAIFMT_LEFT_J):
+               tdm_rx_start_slot = 0;
+               break;
+       default:
+               dev_err(tas2562->dev, "DAI Format is not found, fmt=0x%x\n",
+                       fmt);
+               ret = -EINVAL;
+               break;
+       }
+
+       ret = snd_soc_component_update_bits(component, TAS2562_TDM_CFG1,
+                                           TAS2562_TDM_CFG1_RX_OFFSET_MASK,
+                                           tdm_rx_start_slot);
+
+       if (ret < 0)
+               return ret;
+
+       return 0;
+}
+
+static int tas2562_mute(struct snd_soc_dai *dai, int mute)
+{
+       struct snd_soc_component *component = dai->component;
+
+       return snd_soc_component_update_bits(component, TAS2562_PWR_CTRL,
+                                            TAS2562_MODE_MASK,
+                                            mute ? TAS2562_MUTE : 0);
+}
+
+static int tas2562_codec_probe(struct snd_soc_component *component)
+{
+       struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
+       int ret;
+
+       tas2562->component = component;
+
+       if (tas2562->sdz_gpio)
+               gpiod_set_value_cansleep(tas2562->sdz_gpio, 1);
+
+       ret = snd_soc_component_update_bits(component, TAS2562_PWR_CTRL,
+                                           TAS2562_MODE_MASK, TAS2562_MUTE);
+       if (ret < 0)
+               return ret;
+
+       return 0;
+}
+
+#ifdef CONFIG_PM
+static int tas2562_suspend(struct snd_soc_component *component)
+{
+       struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
+
+       regcache_cache_only(tas2562->regmap, true);
+       regcache_mark_dirty(tas2562->regmap);
+
+       if (tas2562->sdz_gpio)
+               gpiod_set_value_cansleep(tas2562->sdz_gpio, 0);
+
+       return 0;
+}
+
+static int tas2562_resume(struct snd_soc_component *component)
+{
+       struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
+
+       if (tas2562->sdz_gpio)
+               gpiod_set_value_cansleep(tas2562->sdz_gpio, 1);
+
+       regcache_cache_only(tas2562->regmap, false);
+
+       return regcache_sync(tas2562->regmap);
+}
+#else
+#define tas2562_suspend NULL
+#define tas2562_resume NULL
+#endif
+
+static const char * const tas2562_ASI1_src[] = {
+       "I2C offset", "Left", "Right", "LeftRightDiv2",
+};
+
+static SOC_ENUM_SINGLE_DECL(tas2562_ASI1_src_enum, TAS2562_TDM_CFG2, 4,
+                           tas2562_ASI1_src);
+
+static const struct snd_kcontrol_new tas2562_asi1_mux =
+       SOC_DAPM_ENUM("ASI1 Source", tas2562_ASI1_src_enum);
+
+static int tas2562_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 tas2562_data *tas2562 = snd_soc_component_get_drvdata(component);
+
+       switch (event) {
+       case SND_SOC_DAPM_POST_PMU:
+               dev_info(tas2562->dev, "SND_SOC_DAPM_POST_PMU\n");
+               break;
+       case SND_SOC_DAPM_PRE_PMD:
+               dev_info(tas2562->dev, "SND_SOC_DAPM_PRE_PMD\n");
+               break;
+       default:
+               break;
+       }
+
+       return 0;
+}
+
+static DECLARE_TLV_DB_SCALE(tas2562_dac_tlv, 850, 50, 0);
+
+static const struct snd_kcontrol_new isense_switch =
+       SOC_DAPM_SINGLE("Switch", TAS2562_PWR_CTRL, TAS2562_ISENSE_POWER_EN,
+                       1, 1);
+
+static const struct snd_kcontrol_new vsense_switch =
+       SOC_DAPM_SINGLE("Switch", TAS2562_PWR_CTRL, TAS2562_VSENSE_POWER_EN,
+                       1, 1);
+
+static const struct snd_kcontrol_new tas2562_snd_controls[] = {
+       SOC_SINGLE_TLV("Amp Gain Volume", TAS2562_PB_CFG1, 0, 0x1c, 0,
+                      tas2562_dac_tlv),
+};
+
+static const struct snd_soc_dapm_widget tas2562_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, &tas2562_asi1_mux),
+       SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0),
+       SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2562_dac_event,
+                          SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+       SND_SOC_DAPM_SWITCH("ISENSE", TAS2562_PWR_CTRL, 3, 1, &isense_switch),
+       SND_SOC_DAPM_SWITCH("VSENSE", TAS2562_PWR_CTRL, 2, 1, &vsense_switch),
+       SND_SOC_DAPM_SIGGEN("VMON"),
+       SND_SOC_DAPM_SIGGEN("IMON"),
+       SND_SOC_DAPM_OUTPUT("OUT"),
+};
+
+static const struct snd_soc_dapm_route tas2562_audio_map[] = {
+       {"ASI1 Sel", "I2C offset", "ASI1"},
+       {"ASI1 Sel", "Left", "ASI1"},
+       {"ASI1 Sel", "Right", "ASI1"},
+       {"ASI1 Sel", "LeftRightDiv2", "ASI1"},
+       { "DAC", NULL, "DAC IN" },
+       { "OUT", NULL, "DAC" },
+       {"ISENSE", "Switch", "IMON"},
+       {"VSENSE", "Switch", "VMON"},
+};
+
+static const struct snd_soc_component_driver soc_component_dev_tas2562 = {
+       .probe                  = tas2562_codec_probe,
+       .suspend                = tas2562_suspend,
+       .resume                 = tas2562_resume,
+       .set_bias_level         = tas2562_set_bias_level,
+       .controls               = tas2562_snd_controls,
+       .num_controls           = ARRAY_SIZE(tas2562_snd_controls),
+       .dapm_widgets           = tas2562_dapm_widgets,
+       .num_dapm_widgets       = ARRAY_SIZE(tas2562_dapm_widgets),
+       .dapm_routes            = tas2562_audio_map,
+       .num_dapm_routes        = ARRAY_SIZE(tas2562_audio_map),
+       .idle_bias_on           = 1,
+       .use_pmdown_time        = 1,
+       .endianness             = 1,
+       .non_legacy_dai_naming  = 1,
+};
+
+static const struct snd_soc_dai_ops tas2562_speaker_dai_ops = {
+       .hw_params      = tas2562_hw_params,
+       .set_fmt        = tas2562_set_dai_fmt,
+       .set_tdm_slot   = tas2562_set_dai_tdm_slot,
+       .digital_mute   = tas2562_mute,
+};
+
+static struct snd_soc_dai_driver tas2562_dai[] = {
+       {
+               .name = "tas2562-amplifier",
+               .id = 0,
+               .playback = {
+                       .stream_name    = "ASI1 Playback",
+                       .channels_min   = 2,
+                       .channels_max   = 2,
+                       .rates      = SNDRV_PCM_RATE_8000_192000,
+                       .formats    = TAS2562_FORMATS,
+               },
+               .ops = &tas2562_speaker_dai_ops,
+       },
+};
+
+static const struct regmap_range_cfg tas2562_ranges[] = {
+       {
+               .range_min = 0,
+               .range_max = 5 * 128,
+               .selector_reg = TAS2562_PAGE_CTRL,
+               .selector_mask = 0xff,
+               .selector_shift = 0,
+               .window_start = 0,
+               .window_len = 128,
+       },
+};
+
+static const struct reg_default tas2562_reg_defaults[] = {
+       { TAS2562_PAGE_CTRL, 0x00 },
+       { TAS2562_SW_RESET, 0x00 },
+       { TAS2562_PWR_CTRL, 0x0e },
+       { TAS2562_PB_CFG1, 0x20 },
+       { TAS2562_TDM_CFG0, 0x09 },
+       { TAS2562_TDM_CFG1, 0x02 },
+};
+
+static const struct regmap_config tas2562_regmap_config = {
+       .reg_bits = 8,
+       .val_bits = 8,
+
+       .max_register = 5 * 128,
+       .cache_type = REGCACHE_RBTREE,
+       .reg_defaults = tas2562_reg_defaults,
+       .num_reg_defaults = ARRAY_SIZE(tas2562_reg_defaults),
+       .ranges = tas2562_ranges,
+       .num_ranges = ARRAY_SIZE(tas2562_ranges),
+};
+
+static int tas2562_parse_dt(struct tas2562_data *tas2562)
+{
+       struct device *dev = tas2562->dev;
+       int ret = 0;
+
+       tas2562->sdz_gpio = devm_gpiod_get_optional(dev, "shut-down-gpio",
+                                                     GPIOD_OUT_HIGH);
+       if (IS_ERR(tas2562->sdz_gpio)) {
+               if (PTR_ERR(tas2562->sdz_gpio) == -EPROBE_DEFER) {
+                       tas2562->sdz_gpio = NULL;
+                       return -EPROBE_DEFER;
+               }
+       }
+
+       ret = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
+                       &tas2562->i_sense_slot);
+       if (ret)
+               dev_err(dev, "Looking up %s property failed %d\n",
+                       "ti,imon-slot-no", ret);
+
+       return ret;
+}
+
+static int tas2562_probe(struct i2c_client *client,
+                        const struct i2c_device_id *id)
+{
+       struct device *dev = &client->dev;
+       struct tas2562_data *data;
+       int ret;
+
+       data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+       if (!data)
+               return -ENOMEM;
+
+       data->client = client;
+       data->dev = &client->dev;
+
+       tas2562_parse_dt(data);
+
+       data->regmap = devm_regmap_init_i2c(client, &tas2562_regmap_config);
+       if (IS_ERR(data->regmap)) {
+               ret = PTR_ERR(data->regmap);
+               dev_err(dev, "failed to allocate register map: %d\n", ret);
+               return ret;
+       }
+
+       dev_set_drvdata(&client->dev, data);
+
+       return devm_snd_soc_register_component(dev, &soc_component_dev_tas2562,
+                                              tas2562_dai,
+                                              ARRAY_SIZE(tas2562_dai));
+
+}
+
+static const struct i2c_device_id tas2562_id[] = {
+       { "tas2562", 0 },
+       { }
+};
+MODULE_DEVICE_TABLE(i2c, tas2562_id);
+
+static const struct of_device_id tas2562_of_match[] = {
+       { .compatible = "ti,tas2562", },
+       { },
+};
+MODULE_DEVICE_TABLE(of, tas2562_of_match);
+
+static struct i2c_driver tas2562_i2c_driver = {
+       .driver = {
+               .name = "tas2562",
+               .of_match_table = of_match_ptr(tas2562_of_match),
+       },
+       .probe = tas2562_probe,
+       .id_table = tas2562_id,
+};
+
+module_i2c_driver(tas2562_i2c_driver);
+
+MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
+MODULE_DESCRIPTION("TAS2562 Audio amplifier driver");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/tas2562.h b/sound/soc/codecs/tas2562.h
new file mode 100644 (file)
index 0000000..60f2bb1
--- /dev/null
@@ -0,0 +1,85 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * tas2562.h - ALSA SoC Texas Instruments TAS2562 Mono Audio Amplifier
+ *
+ * Copyright (C) 2019 Texas Instruments Incorporated -  http://www.ti.com
+ *
+ * Author: Dan Murphy <dmurphy@ti.com>
+ */
+
+#ifndef __TAS2562_H__
+#define __TAS2562_H__
+
+#define TAS2562_PAGE_CTRL      0x00
+
+#define TAS2562_REG(page, reg) ((page * 128) + reg)
+
+#define TAS2562_SW_RESET       TAS2562_REG(0, 0x01)
+#define TAS2562_PWR_CTRL       TAS2562_REG(0, 0x02)
+#define TAS2562_PB_CFG1                TAS2562_REG(0, 0x03)
+#define TAS2562_MISC_CFG1      TAS2562_REG(0, 0x04)
+#define TAS2562_MISC_CFG2      TAS2562_REG(0, 0x05)
+
+#define TAS2562_TDM_CFG0       TAS2562_REG(0, 0x06)
+#define TAS2562_TDM_CFG1       TAS2562_REG(0, 0x07)
+#define TAS2562_TDM_CFG2       TAS2562_REG(0, 0x08)
+#define TAS2562_TDM_CFG3       TAS2562_REG(0, 0x09)
+#define TAS2562_TDM_CFG4       TAS2562_REG(0, 0x0a)
+#define TAS2562_TDM_CFG5       TAS2562_REG(0, 0x0b)
+#define TAS2562_TDM_CFG6       TAS2562_REG(0, 0x0c)
+#define TAS2562_TDM_CFG7       TAS2562_REG(0, 0x0d)
+#define TAS2562_TDM_CFG8       TAS2562_REG(0, 0x0e)
+#define TAS2562_TDM_CFG9       TAS2562_REG(0, 0x0f)
+#define TAS2562_TDM_CFG10      TAS2562_REG(0, 0x10)
+#define TAS2562_TDM_DET                TAS2562_REG(0, 0x11)
+#define TAS2562_REV_ID         TAS2562_REG(0, 0x7d)
+
+/* Page 2 */
+#define TAS2562_DVC_CFG1       TAS2562_REG(2, 0x01)
+#define TAS2562_DVC_CFG2       TAS2562_REG(2, 0x02)
+
+#define TAS2562_RESET  BIT(0)
+
+#define TAS2562_MODE_MASK      0x3
+#define TAS2562_ACTIVE         0x0
+#define TAS2562_MUTE           0x1
+#define TAS2562_SHUTDOWN       0x2
+
+#define TAS2562_TDM_CFG1_RX_EDGE_MASK  BIT(0)
+#define TAS2562_TDM_CFG1_RX_FALLING    1
+#define TAS2562_TDM_CFG1_RX_OFFSET_MASK        GENMASK(4, 0)
+
+#define TAS2562_TDM_CFG0_RAMPRATE_MASK         BIT(5)
+#define TAS2562_TDM_CFG0_RAMPRATE_44_1         BIT(5)
+#define TAS2562_TDM_CFG0_SAMPRATE_MASK         GENMASK(3, 1)
+#define TAS2562_TDM_CFG0_SAMPRATE_7305_8KHZ    0x0
+#define TAS2562_TDM_CFG0_SAMPRATE_14_7_16KHZ   0x1
+#define TAS2562_TDM_CFG0_SAMPRATE_22_05_24KHZ  0x2
+#define TAS2562_TDM_CFG0_SAMPRATE_29_4_32KHZ   0x3
+#define TAS2562_TDM_CFG0_SAMPRATE_44_1_48KHZ   0x4
+#define TAS2562_TDM_CFG0_SAMPRATE_88_2_96KHZ   0x5
+#define TAS2562_TDM_CFG0_SAMPRATE_176_4_192KHZ 0x6
+
+#define TAS2562_TDM_CFG2_RIGHT_JUSTIFY BIT(6)
+
+#define TAS2562_TDM_CFG2_RXLEN_MASK    GENMASK(0, 1)
+#define TAS2562_TDM_CFG2_RXLEN_16B     0x0
+#define TAS2562_TDM_CFG2_RXLEN_24B     BIT(0)
+#define TAS2562_TDM_CFG2_RXLEN_32B     BIT(1)
+
+#define TAS2562_TDM_CFG2_RXWLEN_MASK   GENMASK(3, 2)
+#define TAS2562_TDM_CFG2_RXWLEN_16B    0x0
+#define TAS2562_TDM_CFG2_RXWLEN_20B    BIT(2)
+#define TAS2562_TDM_CFG2_RXWLEN_24B    BIT(3)
+#define TAS2562_TDM_CFG2_RXWLEN_32B    (BIT(2) | BIT(3))
+
+#define TAS2562_VSENSE_POWER_EN                BIT(2)
+#define TAS2562_ISENSE_POWER_EN                BIT(3)
+
+#define TAS2562_TDM_CFG5_VSNS_EN       BIT(6)
+#define TAS2562_TDM_CFG5_VSNS_SLOT_MASK        GENMASK(5, 0)
+
+#define TAS2562_TDM_CFG6_ISNS_EN       BIT(6)
+#define TAS2562_TDM_CFG6_ISNS_SLOT_MASK        GENMASK(5, 0)
+
+#endif /* __TAS2562_H__ */