#include <linux/module.h>
#include <linux/err.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/regmap.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <sound/soc.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/tlv.h>
#include "tas2780.h"
struct tas2780_priv {
struct snd_soc_component *component;
struct gpio_desc *reset_gpio;
struct regmap *regmap;
struct device *dev;
int v_sense_slot;
int i_sense_slot;
};
static void tas2780_reset(struct tas2780_priv *tas2780)
{
int ret = 0;
if (tas2780->reset_gpio) {
gpiod_set_value_cansleep(tas2780->reset_gpio, 0);
usleep_range(2000, 2050);
gpiod_set_value_cansleep(tas2780->reset_gpio, 1);
usleep_range(2000, 2050);
}
ret = snd_soc_component_write(tas2780->component, TAS2780_SW_RST,
TAS2780_RST);
if (ret)
dev_err(tas2780->dev, "%s:errCode:0x%x Reset error!\n",
__func__, ret);
}
#ifdef CONFIG_PM
static int tas2780_codec_suspend(struct snd_soc_component *component)
{
struct tas2780_priv *tas2780 =
snd_soc_component_get_drvdata(component);
int ret = 0;
ret = snd_soc_component_update_bits(component, TAS2780_PWR_CTRL,
TAS2780_PWR_CTRL_MASK, TAS2780_PWR_CTRL_SHUTDOWN);
if (ret < 0) {
dev_err(tas2780->dev, "%s:errCode:0x%0x:power down error\n",
__func__, ret);
goto err;
}
ret = 0;
regcache_cache_only(tas2780->regmap, true);
regcache_mark_dirty(tas2780->regmap);
err:
return ret;
}
static int tas2780_codec_resume(struct snd_soc_component *component)
{
struct tas2780_priv *tas2780 =
snd_soc_component_get_drvdata(component);
int ret = 0;
ret = snd_soc_component_update_bits(component, TAS2780_PWR_CTRL,
TAS2780_PWR_CTRL_MASK, TAS2780_PWR_CTRL_ACTIVE);
if (ret < 0) {
dev_err(tas2780->dev, "%s:errCode:0x%0x:power down error\n",
__func__, ret);
goto err;
}
ret = 0;
regcache_cache_only(tas2780->regmap, false);
ret = regcache_sync(tas2780->regmap);
err:
return ret;
}
#endif
static const char * const tas2780_ASI1_src[] = {
"I2C offset", "Left", "Right", "LeftRightDiv2",
};
static SOC_ENUM_SINGLE_DECL(
tas2780_ASI1_src_enum, TAS2780_TDM_CFG2, 4, tas2780_ASI1_src);
static const struct snd_kcontrol_new tas2780_asi1_mux =
SOC_DAPM_ENUM("ASI1 Source", tas2780_ASI1_src_enum);
static const struct snd_kcontrol_new isense_switch =
SOC_DAPM_SINGLE("Switch", TAS2780_PWR_CTRL,
TAS2780_ISENSE_POWER_EN, 1, 1);
static const struct snd_kcontrol_new vsense_switch =
SOC_DAPM_SINGLE("Switch", TAS2780_PWR_CTRL,
TAS2780_VSENSE_POWER_EN, 1, 1);
static const struct snd_soc_dapm_widget tas2780_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, &tas2780_asi1_mux),
SND_SOC_DAPM_SWITCH("ISENSE", TAS2780_PWR_CTRL,
TAS2780_ISENSE_POWER_EN, 1, &isense_switch),
SND_SOC_DAPM_SWITCH("VSENSE", TAS2780_PWR_CTRL,
TAS2780_VSENSE_POWER_EN, 1, &vsense_switch),
SND_SOC_DAPM_OUTPUT("OUT"),
SND_SOC_DAPM_SIGGEN("VMON"),
SND_SOC_DAPM_SIGGEN("IMON")
};
static const struct snd_soc_dapm_route tas2780_audio_map[] = {
{"ASI1 Sel", "I2C offset", "ASI1"},
{"ASI1 Sel", "Left", "ASI1"},
{"ASI1 Sel", "Right", "ASI1"},
{"ASI1 Sel", "LeftRightDiv2", "ASI1"},
{"OUT", NULL, "ASI1 Sel"},
{"ISENSE", "Switch", "IMON"},
{"VSENSE", "Switch", "VMON"},
};
static int tas2780_mute(struct snd_soc_dai *dai, int mute, int direction)
{
struct snd_soc_component *component = dai->component;
struct tas2780_priv *tas2780 =
snd_soc_component_get_drvdata(component);
int ret = 0;
ret = snd_soc_component_update_bits(component, TAS2780_PWR_CTRL,
TAS2780_PWR_CTRL_MASK,
mute ? TAS2780_PWR_CTRL_MUTE : 0);
if (ret < 0) {
dev_err(tas2780->dev, "%s: Failed to set powercontrol\n",
__func__);
goto err;
}
ret = 0;
err:
return ret;
}
static int tas2780_set_bitwidth(struct tas2780_priv *tas2780, int bitwidth)
{
struct snd_soc_component *component = tas2780->component;
int sense_en;
int val;
int ret;
int slot_size;
switch (bitwidth) {
case SNDRV_PCM_FORMAT_S16_LE:
ret = snd_soc_component_update_bits(component,
TAS2780_TDM_CFG2,
TAS2780_TDM_CFG2_RXW_MASK,
TAS2780_TDM_CFG2_RXW_16BITS);
slot_size = TAS2780_TDM_CFG2_RXS_16BITS;
break;
case SNDRV_PCM_FORMAT_S24_LE:
ret = snd_soc_component_update_bits(component,
TAS2780_TDM_CFG2,
TAS2780_TDM_CFG2_RXW_MASK,
TAS2780_TDM_CFG2_RXW_24BITS);
slot_size = TAS2780_TDM_CFG2_RXS_24BITS;
break;
case SNDRV_PCM_FORMAT_S32_LE:
ret = snd_soc_component_update_bits(component,
TAS2780_TDM_CFG2,
TAS2780_TDM_CFG2_RXW_MASK,
TAS2780_TDM_CFG2_RXW_32BITS);
slot_size = TAS2780_TDM_CFG2_RXS_32BITS;
break;
default:
ret = -EINVAL;
}
if (ret < 0) {
dev_err(tas2780->dev, "%s:errCode:0x%x set bitwidth error\n",
__func__, ret);
goto err;
}
ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2,
TAS2780_TDM_CFG2_RXS_MASK, slot_size);
if (ret < 0) {
dev_err(tas2780->dev,
"%s:errCode:0x%x set RX slot size error\n",
__func__, ret);
goto err;
}
val = snd_soc_component_read(tas2780->component, TAS2780_PWR_CTRL);
if (val < 0) {
dev_err(tas2780->dev, "%s:errCode:0x%x read PWR_CTRL error\n",
__func__, val);
ret = val;
goto err;
}
if (val & (1 << TAS2780_VSENSE_POWER_EN))
sense_en = 0;
else
sense_en = TAS2780_TDM_CFG5_VSNS_ENABLE;
ret = snd_soc_component_update_bits(tas2780->component,
TAS2780_TDM_CFG5, TAS2780_TDM_CFG5_VSNS_ENABLE, sense_en);
if (ret < 0) {
dev_err(tas2780->dev, "%s:errCode:0x%x enable vSNS error\n",
__func__, ret);
goto err;
}
if (val & (1 << TAS2780_ISENSE_POWER_EN))
sense_en = 0;
else
sense_en = TAS2780_TDM_CFG6_ISNS_ENABLE;
ret = snd_soc_component_update_bits(tas2780->component,
TAS2780_TDM_CFG6, TAS2780_TDM_CFG6_ISNS_ENABLE, sense_en);
if (ret < 0) {
dev_err(tas2780->dev, "%s:errCode:0x%x enable iSNS error\n",
__func__, ret);
goto err;
}
ret = 0;
err:
return ret;
}
static int tas2780_set_samplerate(
struct tas2780_priv *tas2780, int samplerate)
{
struct snd_soc_component *component = tas2780->component;
int ramp_rate_val;
int ret;
switch (samplerate) {
case 48000:
ramp_rate_val = TAS2780_TDM_CFG0_SMP_48KHZ |
TAS2780_TDM_CFG0_44_1_48KHZ;
break;
case 44100:
ramp_rate_val = TAS2780_TDM_CFG0_SMP_44_1KHZ |
TAS2780_TDM_CFG0_44_1_48KHZ;
break;
case 96000:
ramp_rate_val = TAS2780_TDM_CFG0_SMP_48KHZ |
TAS2780_TDM_CFG0_88_2_96KHZ;
break;
case 88200:
ramp_rate_val = TAS2780_TDM_CFG0_SMP_44_1KHZ |
TAS2780_TDM_CFG0_88_2_96KHZ;
break;
default:
return -EINVAL;
}
ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG0,
TAS2780_TDM_CFG0_SMP_MASK | TAS2780_TDM_CFG0_MASK,
ramp_rate_val);
if (ret < 0) {
dev_err(tas2780->dev,
"%s:errCode:0x%x Failed to set ramp_rate_val\n",
__func__, ret);
goto err;
}
ret = 0;
err:
return ret;
}
static int tas2780_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 tas2780_priv *tas2780 =
snd_soc_component_get_drvdata(component);
int ret;
ret = tas2780_set_bitwidth(tas2780, params_format(params));
if (ret < 0)
return ret;
return tas2780_set_samplerate(tas2780, params_rate(params));
}
static int tas2780_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct snd_soc_component *component = dai->component;
struct tas2780_priv *tas2780 =
snd_soc_component_get_drvdata(component);
u8 tdm_rx_start_slot = 0, asi_cfg_1 = 0;
int iface;
int ret = 0;
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
asi_cfg_1 = TAS2780_TDM_CFG1_RX_RISING;
break;
case SND_SOC_DAIFMT_IB_NF:
asi_cfg_1 = TAS2780_TDM_CFG1_RX_FALLING;
break;
default:
dev_err(tas2780->dev, "ASI format Inverse is not found\n");
return -EINVAL;
}
ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG1,
TAS2780_TDM_CFG1_RX_MASK, asi_cfg_1);
if (ret < 0) {
dev_err(tas2780->dev,
"%s:errCode:0x%x Failed to set asi_cfg_1\n",
__func__, ret);
goto err;
}
if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK) == SND_SOC_DAIFMT_I2S)
|| ((fmt & SND_SOC_DAIFMT_FORMAT_MASK)
== SND_SOC_DAIFMT_DSP_A)){
iface = TAS2780_TDM_CFG2_SCFG_I2S;
tdm_rx_start_slot = 1;
} else {
if (((fmt & SND_SOC_DAIFMT_FORMAT_MASK)
== SND_SOC_DAIFMT_DSP_B)
|| ((fmt & SND_SOC_DAIFMT_FORMAT_MASK)
== SND_SOC_DAIFMT_LEFT_J)) {
iface = TAS2780_TDM_CFG2_SCFG_LEFT_J;
tdm_rx_start_slot = 0;
} else {
dev_err(tas2780->dev,
"%s:DAI Format is not found, fmt=0x%x\n",
__func__, fmt);
ret = -EINVAL;
goto err;
}
}
ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG1,
TAS2780_TDM_CFG1_MASK,
(tdm_rx_start_slot << TAS2780_TDM_CFG1_51_SHIFT));
if (ret < 0) {
dev_err(tas2780->dev,
"%s:errCode:0x%x Failed to set tdm_rx_start_slot\n",
__func__, ret);
goto err;
}
ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2,
TAS2780_TDM_CFG2_SCFG_MASK, iface);
if (ret < 0) {
dev_err(tas2780->dev, "%s:errCode:0x%x Failed to set iface\n",
__func__, ret);
goto err;
}
ret = 0;
err:
return ret;
}
static int tas2780_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 tas2780_priv *tas2780 =
snd_soc_component_get_drvdata(component);
int left_slot, right_slot;
int slots_cfg;
int slot_size;
int ret = 0;
if (tx_mask == 0 || rx_mask != 0)
return -EINVAL;
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;
slots_cfg = (right_slot << TAS2780_TDM_CFG3_RXS_SHIFT) | left_slot;
ret = snd_soc_component_write(component, TAS2780_TDM_CFG3, slots_cfg);
if (ret) {
dev_err(tas2780->dev,
"%s:errCode:0x%x Failed to set slots_cfg\n",
__func__, ret);
goto err;
}
switch (slot_width) {
case 16:
slot_size = TAS2780_TDM_CFG2_RXS_16BITS;
break;
case 24:
slot_size = TAS2780_TDM_CFG2_RXS_24BITS;
break;
case 32:
slot_size = TAS2780_TDM_CFG2_RXS_32BITS;
break;
default:
ret = -EINVAL;
goto err;
}
ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG2,
TAS2780_TDM_CFG2_RXS_MASK, slot_size);
if (ret < 0) {
dev_err(tas2780->dev,
"%s:errCode:0x%x Failed to set slot_size\n",
__func__, ret);
goto err;
}
ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG5,
TAS2780_TDM_CFG5_50_MASK, tas2780->v_sense_slot);
if (ret < 0) {
dev_err(tas2780->dev,
"%s:errCode:0x%x Failed to set v_sense_slot\n",
__func__, ret);
goto err;
}
ret = snd_soc_component_update_bits(component, TAS2780_TDM_CFG6,
TAS2780_TDM_CFG6_50_MASK, tas2780->i_sense_slot);
if (ret < 0) {
dev_err(tas2780->dev,
"%s:errCode:0x%x Failed to set i_sense_slot\n",
__func__, ret);
goto err;
}
ret = 0;
err:
return ret;
}
static const struct snd_soc_dai_ops tas2780_dai_ops = {
.mute_stream = tas2780_mute,
.hw_params = tas2780_hw_params,
.set_fmt = tas2780_set_fmt,
.set_tdm_slot = tas2780_set_dai_tdm_slot,
.no_capture_mute = 1,
};
#define TAS2780_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
#define TAS2780_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_88200)
static struct snd_soc_dai_driver tas2780_dai_driver[] = {
{
.name = "tas2780 ASI1",
.id = 0,
.playback = {
.stream_name = "ASI1 Playback",
.channels_min = 2,
.channels_max = 2,
.rates = TAS2780_RATES,
.formats = TAS2780_FORMATS,
},
.capture = {
.stream_name = "ASI1 Capture",
.channels_min = 1,
.channels_max = 2,
.rates = TAS2780_RATES,
.formats = TAS2780_FORMATS,
},
.ops = &tas2780_dai_ops,
.symmetric_rate = 1,
},
};
static int tas2780_codec_probe(struct snd_soc_component *component)
{
struct tas2780_priv *tas2780 =
snd_soc_component_get_drvdata(component);
int ret = 0;
tas2780->component = component;
tas2780_reset(tas2780);
ret = snd_soc_component_update_bits(component,
TAS2780_IC_CFG, TAS2780_IC_CFG_MASK,
TAS2780_IC_CFG_ENABLE);
if (ret < 0)
dev_err(tas2780->dev, "%s:errCode:0x%0x\n",
__func__, ret);
return ret;
}
static DECLARE_TLV_DB_SCALE(tas2780_digital_tlv, 1100, 50, 0);
static DECLARE_TLV_DB_SCALE(tas2780_playback_volume, -10000, 50, 0);
static const struct snd_kcontrol_new tas2780_snd_controls[] = {
SOC_SINGLE_TLV("Speaker Volume", TAS2780_DVC, 0,
TAS2780_DVC_MAX, 1, tas2780_playback_volume),
SOC_SINGLE_TLV("Amp Gain Volume", TAS2780_CHNL_0, 0, 0x14, 0,
tas2780_digital_tlv),
};
static const struct snd_soc_component_driver soc_component_driver_tas2780 = {
.probe = tas2780_codec_probe,
#ifdef CONFIG_PM
.suspend = tas2780_codec_suspend,
.resume = tas2780_codec_resume,
#endif
.controls = tas2780_snd_controls,
.num_controls = ARRAY_SIZE(tas2780_snd_controls),
.dapm_widgets = tas2780_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(tas2780_dapm_widgets),
.dapm_routes = tas2780_audio_map,
.num_dapm_routes = ARRAY_SIZE(tas2780_audio_map),
.idle_bias_on = 1,
.endianness = 1,
};
static const struct reg_default tas2780_reg_defaults[] = {
{ TAS2780_PAGE, 0x00 },
{ TAS2780_SW_RST, 0x00 },
{ TAS2780_PWR_CTRL, 0x1a },
{ TAS2780_DVC, 0x00 },
{ TAS2780_CHNL_0, 0x00 },
{ TAS2780_TDM_CFG0, 0x09 },
{ TAS2780_TDM_CFG1, 0x02 },
{ TAS2780_TDM_CFG2, 0x0a },
{ TAS2780_TDM_CFG3, 0x10 },
{ TAS2780_TDM_CFG5, 0x42 },
};
static const struct regmap_range_cfg tas2780_regmap_ranges[] = {
{
.range_min = 0,
.range_max = 1 * 128,
.selector_reg = TAS2780_PAGE,
.selector_mask = 0xff,
.selector_shift = 0,
.window_start = 0,
.window_len = 128,
},
};
static const struct regmap_config tas2780_i2c_regmap = {
.reg_bits = 8,
.val_bits = 8,
.reg_defaults = tas2780_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(tas2780_reg_defaults),
.cache_type = REGCACHE_RBTREE,
.ranges = tas2780_regmap_ranges,
.num_ranges = ARRAY_SIZE(tas2780_regmap_ranges),
.max_register = 1 * 128,
};
static int tas2780_parse_dt(struct device *dev, struct tas2780_priv *tas2780)
{
int ret = 0;
tas2780->reset_gpio = devm_gpiod_get_optional(tas2780->dev, "reset",
GPIOD_OUT_HIGH);
if (IS_ERR(tas2780->reset_gpio)) {
if (PTR_ERR(tas2780->reset_gpio) == -EPROBE_DEFER) {
tas2780->reset_gpio = NULL;
return -EPROBE_DEFER;
}
}
ret = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
&tas2780->i_sense_slot);
if (ret)
tas2780->i_sense_slot = 0;
ret = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
&tas2780->v_sense_slot);
if (ret)
tas2780->v_sense_slot = 2;
return 0;
}
static int tas2780_i2c_probe(struct i2c_client *client)
{
struct tas2780_priv *tas2780;
int result;
tas2780 = devm_kzalloc(&client->dev, sizeof(struct tas2780_priv),
GFP_KERNEL);
if (!tas2780)
return -ENOMEM;
tas2780->dev = &client->dev;
i2c_set_clientdata(client, tas2780);
dev_set_drvdata(&client->dev, tas2780);
tas2780->regmap = devm_regmap_init_i2c(client, &tas2780_i2c_regmap);
if (IS_ERR(tas2780->regmap)) {
result = PTR_ERR(tas2780->regmap);
dev_err(&client->dev, "Failed to allocate register map: %d\n",
result);
return result;
}
if (client->dev.of_node) {
result = tas2780_parse_dt(&client->dev, tas2780);
if (result) {
dev_err(tas2780->dev,
"%s: Failed to parse devicetree\n", __func__);
return result;
}
}
return devm_snd_soc_register_component(tas2780->dev,
&soc_component_driver_tas2780, tas2780_dai_driver,
ARRAY_SIZE(tas2780_dai_driver));
}
static const struct i2c_device_id tas2780_i2c_id[] = {
{ "tas2780", 0},
{ }
};
MODULE_DEVICE_TABLE(i2c, tas2780_i2c_id);
#if defined(CONFIG_OF)
static const struct of_device_id tas2780_of_match[] = {
{ .compatible = "ti,tas2780" },
{},
};
MODULE_DEVICE_TABLE(of, tas2780_of_match);
#endif
static struct i2c_driver tas2780_i2c_driver = {
.driver = {
.name = "tas2780",
.of_match_table = of_match_ptr(tas2780_of_match),
},
.probe = tas2780_i2c_probe,
.id_table = tas2780_i2c_id,
};
module_i2c_driver(tas2780_i2c_driver);
MODULE_AUTHOR("Raphael Xu <raphael-xu@ti.com>");
MODULE_DESCRIPTION("TAS2780 I2C Smart Amplifier driver");
MODULE_LICENSE("GPL"