diff options
Diffstat (limited to 'sound/soc/codecs/tas2562.c')
| -rw-r--r-- | sound/soc/codecs/tas2562.c | 794 |
1 files changed, 794 insertions, 0 deletions
diff --git a/sound/soc/codecs/tas2562.c b/sound/soc/codecs/tas2562.c new file mode 100644 index 000000000..962c2cdfa --- /dev/null +++ b/sound/soc/codecs/tas2562.c @@ -0,0 +1,794 @@ +// 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/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) + +/* DVC equation involves floating point math + * round(10^(volume in dB/20)*2^30) + * so create a lookup table for 2dB step + */ +static const unsigned int float_vol_db_lookup[] = { +0x00000d43, 0x000010b2, 0x00001505, 0x00001a67, 0x00002151, +0x000029f1, 0x000034cd, 0x00004279, 0x000053af, 0x0000695b, +0x0000695b, 0x0000a6fa, 0x0000d236, 0x000108a4, 0x00014d2a, +0x0001a36e, 0x00021008, 0x000298c0, 0x000344df, 0x00041d8f, +0x00052e5a, 0x000685c8, 0x00083621, 0x000a566d, 0x000d03a7, +0x0010624d, 0x0014a050, 0x0019f786, 0x0020b0bc, 0x0029279d, +0x0033cf8d, 0x004139d3, 0x00521d50, 0x00676044, 0x0082248a, +0x00a3d70a, 0x00ce4328, 0x0103ab3d, 0x0146e75d, 0x019b8c27, +0x02061b89, 0x028c423f, 0x03352529, 0x0409c2b0, 0x05156d68, +0x080e9f96, 0x0a24b062, 0x0cc509ab, 0x10137987, 0x143d1362, +0x197a967f, 0x2013739e, 0x28619ae9, 0x32d64617, 0x40000000 +}; + +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; + int volume_lvl; + int model_id; + bool dac_powered; + bool unmuted; +}; + +enum tas256x_model { + TAS2562, + TAS2563, + TAS2564, + TAS2110, +}; + +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 left_slot, right_slot; + int slots_cfg; + int ret; + + if (!tx_mask) { + dev_err(component->dev, "tx masks must not be 0\n"); + 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); + } + } + + slots_cfg = (right_slot << TAS2562_RIGHT_SLOT_SHIFT) | left_slot; + + ret = snd_soc_component_write(component, TAS2562_TDM_CFG3, slots_cfg); + if (ret < 0) + return ret; + + 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; + + ret = snd_soc_component_update_bits(component, TAS2562_TDM_CFG5, + TAS2562_TDM_CFG5_VSNS_SLOT_MASK, + tas2562->v_sense_slot); + if (ret < 0) + return ret; + + ret = snd_soc_component_update_bits(component, TAS2562_TDM_CFG6, + TAS2562_TDM_CFG6_ISNS_SLOT_MASK, + tas2562->i_sense_slot); + if (ret < 0) + return ret; + + return 0; +} + +static int tas2562_set_bitwidth(struct tas2562_data *tas2562, int bitwidth) +{ + int ret; + int val; + int sense_en; + + 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); + 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); + 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); + break; + + default: + dev_info(tas2562->dev, "Unsupported bitwidth format\n"); + return -EINVAL; + } + + val = snd_soc_component_read(tas2562->component, TAS2562_PWR_CTRL); + if (val < 0) + return val; + + if (val & (1 << TAS2562_VSENSE_POWER_EN)) + sense_en = 0; + else + sense_en = TAS2562_TDM_CFG5_VSNS_EN; + + ret = snd_soc_component_update_bits(tas2562->component, TAS2562_TDM_CFG5, + TAS2562_TDM_CFG5_VSNS_EN, sense_en); + if (ret < 0) + return ret; + + if (val & (1 << TAS2562_ISENSE_POWER_EN)) + sense_en = 0; + else + sense_en = TAS2562_TDM_CFG6_ISNS_EN; + + ret = snd_soc_component_update_bits(tas2562->component, TAS2562_TDM_CFG6, + TAS2562_TDM_CFG6_ISNS_EN, sense_en); + 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 sample rate 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 asi_cfg_1 = 0; + u8 tdm_rx_start_slot = 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_LEFT_J: + case SND_SOC_DAIFMT_DSP_B: + tdm_rx_start_slot = 0; + break; + case SND_SOC_DAIFMT_I2S: + case SND_SOC_DAIFMT_DSP_A: + tdm_rx_start_slot = 1; + break; + default: + dev_err(tas2562->dev, + "DAI Format is not found, fmt=0x%x\n", fmt); + return -EINVAL; + } + + ret = snd_soc_component_update_bits(component, TAS2562_TDM_CFG1, + TAS2562_RX_OFF_MASK, (tdm_rx_start_slot << 1)); + if (ret < 0) + return ret; + + return 0; +} + +static int tas2562_update_pwr_ctrl(struct tas2562_data *tas2562) +{ + struct snd_soc_component *component = tas2562->component; + unsigned int val; + int ret; + + if (tas2562->dac_powered) + val = tas2562->unmuted ? + TAS2562_ACTIVE : TAS2562_MUTE; + else + val = TAS2562_SHUTDOWN; + + ret = snd_soc_component_update_bits(component, TAS2562_PWR_CTRL, + TAS2562_MODE_MASK, val); + if (ret < 0) + return ret; + + return 0; +} + +static int tas2562_mute(struct snd_soc_dai *dai, int mute, int direction) +{ + struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(dai->component); + + tas2562->unmuted = !mute; + return tas2562_update_pwr_ctrl(tas2562); +} + +static int tas2562_codec_probe(struct snd_soc_component *component) +{ + struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component); + + tas2562->component = component; + + if (tas2562->sdz_gpio) + gpiod_set_value_cansleep(tas2562->sdz_gpio, 1); + + 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); + int ret = 0; + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + tas2562->dac_powered = true; + ret = tas2562_update_pwr_ctrl(tas2562); + break; + case SND_SOC_DAPM_PRE_PMD: + tas2562->dac_powered = false; + ret = tas2562_update_pwr_ctrl(tas2562); + break; + default: + dev_err(tas2562->dev, "Not supported evevt\n"); + return -EINVAL; + } + + return ret; +} + +static int tas2562_volume_control_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component); + + ucontrol->value.integer.value[0] = tas2562->volume_lvl; + return 0; +} + +static int tas2562_volume_control_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol) +{ + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol); + struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component); + int ret; + u32 reg_val; + + reg_val = float_vol_db_lookup[ucontrol->value.integer.value[0]/2]; + ret = snd_soc_component_write(component, TAS2562_DVC_CFG4, + (reg_val & 0xff)); + if (ret) + return ret; + ret = snd_soc_component_write(component, TAS2562_DVC_CFG3, + ((reg_val >> 8) & 0xff)); + if (ret) + return ret; + ret = snd_soc_component_write(component, TAS2562_DVC_CFG2, + ((reg_val >> 16) & 0xff)); + if (ret) + return ret; + ret = snd_soc_component_write(component, TAS2562_DVC_CFG1, + ((reg_val >> 24) & 0xff)); + if (ret) + return ret; + + tas2562->volume_lvl = ucontrol->value.integer.value[0]; + + return 0; +} + +/* Digital Volume Control. From 0 dB to -110 dB in 1 dB steps */ +static const DECLARE_TLV_DB_SCALE(dvc_tlv, -11000, 100, 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, 1, 0x1c, 0, + tas2562_dac_tlv), + { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "Digital Volume Control", + .index = 0, + .tlv.p = dvc_tlv, + .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | SNDRV_CTL_ELEM_ACCESS_READWRITE, + .info = snd_soc_info_volsw, + .get = tas2562_volume_control_get, + .put = tas2562_volume_control_put, + .private_value = SOC_SINGLE_VALUE(TAS2562_DVC_CFG1, 0, 110, 0, 0), + }, +}; + +static const struct snd_soc_dapm_widget tas2110_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_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_OUTPUT("OUT"), +}; + +static const struct snd_soc_dapm_route tas2110_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" }, +}; + +static const struct snd_soc_component_driver soc_component_dev_tas2110 = { + .probe = tas2562_codec_probe, + .suspend = tas2562_suspend, + .resume = tas2562_resume, + .controls = tas2562_snd_controls, + .num_controls = ARRAY_SIZE(tas2562_snd_controls), + .dapm_widgets = tas2110_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(tas2110_dapm_widgets), + .dapm_routes = tas2110_audio_map, + .num_dapm_routes = ARRAY_SIZE(tas2110_audio_map), + .idle_bias_on = 1, + .use_pmdown_time = 1, + .endianness = 1, +}; + +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_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, "ASI1 Sel" }, + { "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, + .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, +}; + +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, + .mute_stream = tas2562_mute, + .no_capture_mute = 1, +}; + +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, + }, + .capture = { + .stream_name = "ASI1 Capture", + .channels_min = 0, + .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 }, + { TAS2562_DVC_CFG1, 0x40 }, + { TAS2562_DVC_CFG2, 0x40 }, + { TAS2562_DVC_CFG3, 0x00 }, + { TAS2562_DVC_CFG4, 0x00 }, +}; + +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, "shutdown", GPIOD_OUT_HIGH); + if (IS_ERR(tas2562->sdz_gpio)) { + if (PTR_ERR(tas2562->sdz_gpio) == -EPROBE_DEFER) + return -EPROBE_DEFER; + + tas2562->sdz_gpio = NULL; + } + + /* + * The shut-down property is deprecated but needs to be checked for + * backwards compatibility. + */ + if (tas2562->sdz_gpio == NULL) { + tas2562->sdz_gpio = devm_gpiod_get_optional(dev, "shut-down", + GPIOD_OUT_HIGH); + if (IS_ERR(tas2562->sdz_gpio)) + if (PTR_ERR(tas2562->sdz_gpio) == -EPROBE_DEFER) + return -EPROBE_DEFER; + + tas2562->sdz_gpio = NULL; + } + + if (tas2562->model_id == TAS2110) + return ret; + + ret = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no", + &tas2562->i_sense_slot); + if (ret) { + dev_err(dev, "Property %s is missing setting default slot\n", + "ti,imon-slot-no"); + tas2562->i_sense_slot = 0; + } + + + ret = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no", + &tas2562->v_sense_slot); + if (ret) { + dev_info(dev, "Property %s is missing setting default slot\n", + "ti,vmon-slot-no"); + tas2562->v_sense_slot = 2; + } + + if (tas2562->v_sense_slot < tas2562->i_sense_slot) { + dev_err(dev, "Vsense slot must be greater than Isense slot\n"); + return -EINVAL; + } + + return ret; +} + +static const struct i2c_device_id tas2562_id[] = { + { "tas2562", TAS2562 }, + { "tas2563", TAS2563 }, + { "tas2564", TAS2564 }, + { "tas2110", TAS2110 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, tas2562_id); + +static int tas2562_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct tas2562_data *data; + int ret; + const struct i2c_device_id *id; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + id = i2c_match_id(tas2562_id, client); + data->client = client; + data->dev = &client->dev; + data->model_id = id->driver_data; + + 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); + + if (data->model_id == TAS2110) + return devm_snd_soc_register_component(dev, + &soc_component_dev_tas2110, + tas2562_dai, + ARRAY_SIZE(tas2562_dai)); + + return devm_snd_soc_register_component(dev, &soc_component_dev_tas2562, + tas2562_dai, + ARRAY_SIZE(tas2562_dai)); + +} + +#ifdef CONFIG_OF +static const struct of_device_id tas2562_of_match[] = { + { .compatible = "ti,tas2562", }, + { .compatible = "ti,tas2563", }, + { .compatible = "ti,tas2564", }, + { .compatible = "ti,tas2110", }, + { }, +}; +MODULE_DEVICE_TABLE(of, tas2562_of_match); +#endif + +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"); |