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linux/sound/soc/codecs/tas2562.c

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// 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)
/* 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;
};
enum tas256x_model {
TAS2562,
TAS2563,
};
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 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);
tx_mask &= ~(1 << right_slot);
}
}
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;
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_mute(struct snd_soc_dai *dai, int mute, int direction)
{
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);
int ret;
switch (event) {
case SND_SOC_DAPM_POST_PMU:
ret = snd_soc_component_update_bits(component,
TAS2562_PWR_CTRL,
TAS2562_MODE_MASK,
TAS2562_MUTE);
if (ret)
goto end;
break;
case SND_SOC_DAPM_PRE_PMD:
ret = snd_soc_component_update_bits(component,
TAS2562_PWR_CTRL,
TAS2562_MODE_MASK,
TAS2562_SHUTDOWN);
if (ret)
goto end;
break;
default:
dev_err(tas2562->dev, "Not supported evevt\n");
return -EINVAL;
}
end:
if (ret < 0)
return ret;
return 0;
}
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 ret;
}
/* 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 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,
.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,
.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;
}
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 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", TAS2562 },
{ "tas2563", TAS2563 },
{ }
};
MODULE_DEVICE_TABLE(i2c, tas2562_id);
static const struct of_device_id tas2562_of_match[] = {
{ .compatible = "ti,tas2562", },
{ .compatible = "ti,tas2563", },
{ },
};
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");
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