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- // SPDX-License-Identifier: GPL-2.0
- //
- // Driver for the Texas Instruments TAS2764 CODEC
- // Copyright (C) 2020 Texas Instruments Inc.
- #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/gpio/consumer.h>
- #include <linux/regulator/consumer.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 "tas2764.h"
- struct tas2764_priv {
- struct snd_soc_component *component;
- struct gpio_desc *reset_gpio;
- struct gpio_desc *sdz_gpio;
- struct regmap *regmap;
- struct device *dev;
- int irq;
-
- int v_sense_slot;
- int i_sense_slot;
- bool dac_powered;
- bool unmuted;
- };
- static const char *tas2764_int_ltch0_msgs[8] = {
- "fault: over temperature", /* INT_LTCH0 & BIT(0) */
- "fault: over current",
- "fault: bad TDM clock",
- "limiter active",
- "fault: PVDD below limiter inflection point",
- "fault: limiter max attenuation",
- "fault: BOP infinite hold",
- "fault: BOP mute", /* INT_LTCH0 & BIT(7) */
- };
- static const unsigned int tas2764_int_readout_regs[6] = {
- TAS2764_INT_LTCH0,
- TAS2764_INT_LTCH1,
- TAS2764_INT_LTCH1_0,
- TAS2764_INT_LTCH2,
- TAS2764_INT_LTCH3,
- TAS2764_INT_LTCH4,
- };
- static irqreturn_t tas2764_irq(int irq, void *data)
- {
- struct tas2764_priv *tas2764 = data;
- u8 latched[6] = {0, 0, 0, 0, 0, 0};
- int ret = IRQ_NONE;
- int i;
- for (i = 0; i < ARRAY_SIZE(latched); i++)
- latched[i] = snd_soc_component_read(tas2764->component,
- tas2764_int_readout_regs[i]);
- for (i = 0; i < 8; i++) {
- if (latched[0] & BIT(i)) {
- dev_crit_ratelimited(tas2764->dev, "%s\n",
- tas2764_int_ltch0_msgs[i]);
- ret = IRQ_HANDLED;
- }
- }
- if (latched[0]) {
- dev_err_ratelimited(tas2764->dev, "other context to the fault: %02x,%02x,%02x,%02x,%02x",
- latched[1], latched[2], latched[3], latched[4], latched[5]);
- snd_soc_component_update_bits(tas2764->component,
- TAS2764_INT_CLK_CFG,
- TAS2764_INT_CLK_CFG_IRQZ_CLR,
- TAS2764_INT_CLK_CFG_IRQZ_CLR);
- }
- return ret;
- }
- static void tas2764_reset(struct tas2764_priv *tas2764)
- {
- if (tas2764->reset_gpio) {
- gpiod_set_value_cansleep(tas2764->reset_gpio, 0);
- msleep(20);
- gpiod_set_value_cansleep(tas2764->reset_gpio, 1);
- usleep_range(1000, 2000);
- }
- snd_soc_component_write(tas2764->component, TAS2764_SW_RST,
- TAS2764_RST);
- usleep_range(1000, 2000);
- }
- static int tas2764_update_pwr_ctrl(struct tas2764_priv *tas2764)
- {
- struct snd_soc_component *component = tas2764->component;
- unsigned int val;
- int ret;
- if (tas2764->dac_powered)
- val = tas2764->unmuted ?
- TAS2764_PWR_CTRL_ACTIVE : TAS2764_PWR_CTRL_MUTE;
- else
- val = TAS2764_PWR_CTRL_SHUTDOWN;
- ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
- TAS2764_PWR_CTRL_MASK, val);
- if (ret < 0)
- return ret;
- return 0;
- }
- #ifdef CONFIG_PM
- static int tas2764_codec_suspend(struct snd_soc_component *component)
- {
- struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
- int ret;
- ret = snd_soc_component_update_bits(component, TAS2764_PWR_CTRL,
- TAS2764_PWR_CTRL_MASK,
- TAS2764_PWR_CTRL_SHUTDOWN);
- if (ret < 0)
- return ret;
- if (tas2764->sdz_gpio)
- gpiod_set_value_cansleep(tas2764->sdz_gpio, 0);
- regcache_cache_only(tas2764->regmap, true);
- regcache_mark_dirty(tas2764->regmap);
- return 0;
- }
- static int tas2764_codec_resume(struct snd_soc_component *component)
- {
- struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
- int ret;
- if (tas2764->sdz_gpio) {
- gpiod_set_value_cansleep(tas2764->sdz_gpio, 1);
- usleep_range(1000, 2000);
- }
- ret = tas2764_update_pwr_ctrl(tas2764);
- if (ret < 0)
- return ret;
- regcache_cache_only(tas2764->regmap, false);
- return regcache_sync(tas2764->regmap);
- }
- #else
- #define tas2764_codec_suspend NULL
- #define tas2764_codec_resume NULL
- #endif
- static const char * const tas2764_ASI1_src[] = {
- "I2C offset", "Left", "Right", "LeftRightDiv2",
- };
- static SOC_ENUM_SINGLE_DECL(
- tas2764_ASI1_src_enum, TAS2764_TDM_CFG2, TAS2764_TDM_CFG2_SCFG_SHIFT,
- tas2764_ASI1_src);
- static const struct snd_kcontrol_new tas2764_asi1_mux =
- SOC_DAPM_ENUM("ASI1 Source", tas2764_ASI1_src_enum);
- static int tas2764_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 tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
- int ret;
- switch (event) {
- case SND_SOC_DAPM_POST_PMU:
- tas2764->dac_powered = true;
- ret = tas2764_update_pwr_ctrl(tas2764);
- break;
- case SND_SOC_DAPM_PRE_PMD:
- tas2764->dac_powered = false;
- ret = tas2764_update_pwr_ctrl(tas2764);
- break;
- default:
- dev_err(tas2764->dev, "Unsupported event\n");
- return -EINVAL;
- }
- if (ret < 0)
- return ret;
- return 0;
- }
- static const struct snd_kcontrol_new isense_switch =
- SOC_DAPM_SINGLE("Switch", TAS2764_PWR_CTRL, TAS2764_ISENSE_POWER_EN, 1, 1);
- static const struct snd_kcontrol_new vsense_switch =
- SOC_DAPM_SINGLE("Switch", TAS2764_PWR_CTRL, TAS2764_VSENSE_POWER_EN, 1, 1);
- static const struct snd_soc_dapm_widget tas2764_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, &tas2764_asi1_mux),
- SND_SOC_DAPM_SWITCH("ISENSE", TAS2764_PWR_CTRL, TAS2764_ISENSE_POWER_EN,
- 1, &isense_switch),
- SND_SOC_DAPM_SWITCH("VSENSE", TAS2764_PWR_CTRL, TAS2764_VSENSE_POWER_EN,
- 1, &vsense_switch),
- SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, tas2764_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 tas2764_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 tas2764_mute(struct snd_soc_dai *dai, int mute, int direction)
- {
- struct tas2764_priv *tas2764 =
- snd_soc_component_get_drvdata(dai->component);
- tas2764->unmuted = !mute;
- return tas2764_update_pwr_ctrl(tas2764);
- }
- static int tas2764_set_bitwidth(struct tas2764_priv *tas2764, int bitwidth)
- {
- struct snd_soc_component *component = tas2764->component;
- int sense_en;
- int val;
- int ret;
- switch (bitwidth) {
- case SNDRV_PCM_FORMAT_S16_LE:
- ret = snd_soc_component_update_bits(component,
- TAS2764_TDM_CFG2,
- TAS2764_TDM_CFG2_RXW_MASK,
- TAS2764_TDM_CFG2_RXW_16BITS);
- break;
- case SNDRV_PCM_FORMAT_S24_LE:
- ret = snd_soc_component_update_bits(component,
- TAS2764_TDM_CFG2,
- TAS2764_TDM_CFG2_RXW_MASK,
- TAS2764_TDM_CFG2_RXW_24BITS);
- break;
- case SNDRV_PCM_FORMAT_S32_LE:
- ret = snd_soc_component_update_bits(component,
- TAS2764_TDM_CFG2,
- TAS2764_TDM_CFG2_RXW_MASK,
- TAS2764_TDM_CFG2_RXW_32BITS);
- break;
- default:
- return -EINVAL;
- }
- if (ret < 0)
- return ret;
- val = snd_soc_component_read(tas2764->component, TAS2764_PWR_CTRL);
- if (val < 0)
- return val;
- if (val & (1 << TAS2764_VSENSE_POWER_EN))
- sense_en = 0;
- else
- sense_en = TAS2764_TDM_CFG5_VSNS_ENABLE;
- ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG5,
- TAS2764_TDM_CFG5_VSNS_ENABLE,
- sense_en);
- if (ret < 0)
- return ret;
- if (val & (1 << TAS2764_ISENSE_POWER_EN))
- sense_en = 0;
- else
- sense_en = TAS2764_TDM_CFG6_ISNS_ENABLE;
- ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG6,
- TAS2764_TDM_CFG6_ISNS_ENABLE,
- sense_en);
- if (ret < 0)
- return ret;
- return 0;
- }
- static int tas2764_set_samplerate(struct tas2764_priv *tas2764, int samplerate)
- {
- struct snd_soc_component *component = tas2764->component;
- int ramp_rate_val;
- int ret;
- switch (samplerate) {
- case 48000:
- ramp_rate_val = TAS2764_TDM_CFG0_SMP_48KHZ |
- TAS2764_TDM_CFG0_44_1_48KHZ;
- break;
- case 44100:
- ramp_rate_val = TAS2764_TDM_CFG0_SMP_44_1KHZ |
- TAS2764_TDM_CFG0_44_1_48KHZ;
- break;
- case 96000:
- ramp_rate_val = TAS2764_TDM_CFG0_SMP_48KHZ |
- TAS2764_TDM_CFG0_88_2_96KHZ;
- break;
- case 88200:
- ramp_rate_val = TAS2764_TDM_CFG0_SMP_44_1KHZ |
- TAS2764_TDM_CFG0_88_2_96KHZ;
- break;
- default:
- return -EINVAL;
- }
- ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG0,
- TAS2764_TDM_CFG0_SMP_MASK |
- TAS2764_TDM_CFG0_MASK,
- ramp_rate_val);
- if (ret < 0)
- return ret;
- return 0;
- }
- static int tas2764_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 tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
- int ret;
- ret = tas2764_set_bitwidth(tas2764, params_format(params));
- if (ret < 0)
- return ret;
- return tas2764_set_samplerate(tas2764, params_rate(params));
- }
- static int tas2764_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
- {
- struct snd_soc_component *component = dai->component;
- struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
- u8 tdm_rx_start_slot = 0, asi_cfg_0 = 0, asi_cfg_1 = 0;
- int ret;
- switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
- case SND_SOC_DAIFMT_NB_IF:
- asi_cfg_0 ^= TAS2764_TDM_CFG0_FRAME_START;
- fallthrough;
- case SND_SOC_DAIFMT_NB_NF:
- asi_cfg_1 = TAS2764_TDM_CFG1_RX_RISING;
- break;
- case SND_SOC_DAIFMT_IB_IF:
- asi_cfg_0 ^= TAS2764_TDM_CFG0_FRAME_START;
- fallthrough;
- case SND_SOC_DAIFMT_IB_NF:
- asi_cfg_1 = TAS2764_TDM_CFG1_RX_FALLING;
- break;
- }
- ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG1,
- TAS2764_TDM_CFG1_RX_MASK,
- asi_cfg_1);
- if (ret < 0)
- return ret;
- switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
- case SND_SOC_DAIFMT_I2S:
- asi_cfg_0 ^= TAS2764_TDM_CFG0_FRAME_START;
- fallthrough;
- case SND_SOC_DAIFMT_DSP_A:
- tdm_rx_start_slot = 1;
- break;
- case SND_SOC_DAIFMT_DSP_B:
- case SND_SOC_DAIFMT_LEFT_J:
- tdm_rx_start_slot = 0;
- break;
- default:
- dev_err(tas2764->dev,
- "DAI Format is not found, fmt=0x%x\n", fmt);
- return -EINVAL;
- }
- ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG0,
- TAS2764_TDM_CFG0_FRAME_START,
- asi_cfg_0);
- if (ret < 0)
- return ret;
- ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG1,
- TAS2764_TDM_CFG1_MASK,
- (tdm_rx_start_slot << TAS2764_TDM_CFG1_51_SHIFT));
- if (ret < 0)
- return ret;
- return 0;
- }
- static int tas2764_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 tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
- int left_slot, right_slot;
- int slots_cfg;
- int slot_size;
- int ret;
- 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 << TAS2764_TDM_CFG3_RXS_SHIFT) | left_slot;
- ret = snd_soc_component_write(component, TAS2764_TDM_CFG3, slots_cfg);
- if (ret)
- return ret;
- switch (slot_width) {
- case 16:
- slot_size = TAS2764_TDM_CFG2_RXS_16BITS;
- break;
- case 24:
- slot_size = TAS2764_TDM_CFG2_RXS_24BITS;
- break;
- case 32:
- slot_size = TAS2764_TDM_CFG2_RXS_32BITS;
- break;
- default:
- return -EINVAL;
- }
- ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG2,
- TAS2764_TDM_CFG2_RXS_MASK,
- slot_size);
- if (ret < 0)
- return ret;
- ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG5,
- TAS2764_TDM_CFG5_50_MASK,
- tas2764->v_sense_slot);
- if (ret < 0)
- return ret;
- ret = snd_soc_component_update_bits(component, TAS2764_TDM_CFG6,
- TAS2764_TDM_CFG6_50_MASK,
- tas2764->i_sense_slot);
- if (ret < 0)
- return ret;
- return 0;
- }
- static const struct snd_soc_dai_ops tas2764_dai_ops = {
- .mute_stream = tas2764_mute,
- .hw_params = tas2764_hw_params,
- .set_fmt = tas2764_set_fmt,
- .set_tdm_slot = tas2764_set_dai_tdm_slot,
- .no_capture_mute = 1,
- };
- #define TAS2764_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
- SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
- #define TAS2764_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
- SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_88200)
- static struct snd_soc_dai_driver tas2764_dai_driver[] = {
- {
- .name = "tas2764 ASI1",
- .id = 0,
- .playback = {
- .stream_name = "ASI1 Playback",
- .channels_min = 1,
- .channels_max = 2,
- .rates = TAS2764_RATES,
- .formats = TAS2764_FORMATS,
- },
- .capture = {
- .stream_name = "ASI1 Capture",
- .channels_min = 0,
- .channels_max = 2,
- .rates = TAS2764_RATES,
- .formats = TAS2764_FORMATS,
- },
- .ops = &tas2764_dai_ops,
- .symmetric_rate = 1,
- },
- };
- static int tas2764_codec_probe(struct snd_soc_component *component)
- {
- struct tas2764_priv *tas2764 = snd_soc_component_get_drvdata(component);
- int ret;
- tas2764->component = component;
- if (tas2764->sdz_gpio) {
- gpiod_set_value_cansleep(tas2764->sdz_gpio, 1);
- usleep_range(1000, 2000);
- }
- tas2764_reset(tas2764);
- if (tas2764->irq) {
- ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK0, 0xff);
- if (ret < 0)
- return ret;
- ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK1, 0xff);
- if (ret < 0)
- return ret;
- ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK2, 0xff);
- if (ret < 0)
- return ret;
- ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK3, 0xff);
- if (ret < 0)
- return ret;
- ret = snd_soc_component_write(tas2764->component, TAS2764_INT_MASK4, 0xff);
- if (ret < 0)
- return ret;
- ret = devm_request_threaded_irq(tas2764->dev, tas2764->irq, NULL, tas2764_irq,
- IRQF_ONESHOT | IRQF_SHARED | IRQF_TRIGGER_LOW,
- "tas2764", tas2764);
- if (ret)
- dev_warn(tas2764->dev, "failed to request IRQ: %d\n", ret);
- }
- ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG5,
- TAS2764_TDM_CFG5_VSNS_ENABLE, 0);
- if (ret < 0)
- return ret;
- ret = snd_soc_component_update_bits(tas2764->component, TAS2764_TDM_CFG6,
- TAS2764_TDM_CFG6_ISNS_ENABLE, 0);
- if (ret < 0)
- return ret;
- return 0;
- }
- static DECLARE_TLV_DB_SCALE(tas2764_digital_tlv, 1100, 50, 0);
- static DECLARE_TLV_DB_SCALE(tas2764_playback_volume, -10050, 50, 1);
- static const char * const tas2764_hpf_texts[] = {
- "Disabled", "2 Hz", "50 Hz", "100 Hz", "200 Hz",
- "400 Hz", "800 Hz"
- };
- static SOC_ENUM_SINGLE_DECL(
- tas2764_hpf_enum, TAS2764_DC_BLK0,
- TAS2764_DC_BLK0_HPF_FREQ_PB_SHIFT, tas2764_hpf_texts);
- static const struct snd_kcontrol_new tas2764_snd_controls[] = {
- SOC_SINGLE_TLV("Speaker Volume", TAS2764_DVC, 0,
- TAS2764_DVC_MAX, 1, tas2764_playback_volume),
- SOC_SINGLE_TLV("Amp Gain Volume", TAS2764_CHNL_0, 1, 0x14, 0,
- tas2764_digital_tlv),
- SOC_ENUM("HPF Corner Frequency", tas2764_hpf_enum),
- };
- static const struct snd_soc_component_driver soc_component_driver_tas2764 = {
- .probe = tas2764_codec_probe,
- .suspend = tas2764_codec_suspend,
- .resume = tas2764_codec_resume,
- .controls = tas2764_snd_controls,
- .num_controls = ARRAY_SIZE(tas2764_snd_controls),
- .dapm_widgets = tas2764_dapm_widgets,
- .num_dapm_widgets = ARRAY_SIZE(tas2764_dapm_widgets),
- .dapm_routes = tas2764_audio_map,
- .num_dapm_routes = ARRAY_SIZE(tas2764_audio_map),
- .idle_bias_on = 1,
- .endianness = 1,
- };
- static const struct reg_default tas2764_reg_defaults[] = {
- { TAS2764_PAGE, 0x00 },
- { TAS2764_SW_RST, 0x00 },
- { TAS2764_PWR_CTRL, 0x1a },
- { TAS2764_DVC, 0x00 },
- { TAS2764_CHNL_0, 0x28 },
- { TAS2764_TDM_CFG0, 0x09 },
- { TAS2764_TDM_CFG1, 0x02 },
- { TAS2764_TDM_CFG2, 0x0a },
- { TAS2764_TDM_CFG3, 0x10 },
- { TAS2764_TDM_CFG5, 0x42 },
- };
- static const struct regmap_range_cfg tas2764_regmap_ranges[] = {
- {
- .range_min = 0,
- .range_max = 1 * 128,
- .selector_reg = TAS2764_PAGE,
- .selector_mask = 0xff,
- .selector_shift = 0,
- .window_start = 0,
- .window_len = 128,
- },
- };
- static bool tas2764_volatile_register(struct device *dev, unsigned int reg)
- {
- switch (reg) {
- case TAS2764_INT_LTCH0 ... TAS2764_INT_LTCH4:
- case TAS2764_INT_CLK_CFG:
- return true;
- default:
- return false;
- }
- }
- static const struct regmap_config tas2764_i2c_regmap = {
- .reg_bits = 8,
- .val_bits = 8,
- .volatile_reg = tas2764_volatile_register,
- .reg_defaults = tas2764_reg_defaults,
- .num_reg_defaults = ARRAY_SIZE(tas2764_reg_defaults),
- .cache_type = REGCACHE_RBTREE,
- .ranges = tas2764_regmap_ranges,
- .num_ranges = ARRAY_SIZE(tas2764_regmap_ranges),
- .max_register = 1 * 128,
- };
- static int tas2764_parse_dt(struct device *dev, struct tas2764_priv *tas2764)
- {
- int ret = 0;
- tas2764->reset_gpio = devm_gpiod_get_optional(tas2764->dev, "reset",
- GPIOD_OUT_HIGH);
- if (IS_ERR(tas2764->reset_gpio)) {
- if (PTR_ERR(tas2764->reset_gpio) == -EPROBE_DEFER) {
- tas2764->reset_gpio = NULL;
- return -EPROBE_DEFER;
- }
- }
- tas2764->sdz_gpio = devm_gpiod_get_optional(dev, "shutdown", GPIOD_OUT_HIGH);
- if (IS_ERR(tas2764->sdz_gpio)) {
- if (PTR_ERR(tas2764->sdz_gpio) == -EPROBE_DEFER)
- return -EPROBE_DEFER;
- tas2764->sdz_gpio = NULL;
- }
- ret = fwnode_property_read_u32(dev->fwnode, "ti,imon-slot-no",
- &tas2764->i_sense_slot);
- if (ret)
- tas2764->i_sense_slot = 0;
- ret = fwnode_property_read_u32(dev->fwnode, "ti,vmon-slot-no",
- &tas2764->v_sense_slot);
- if (ret)
- tas2764->v_sense_slot = 2;
- return 0;
- }
- static int tas2764_i2c_probe(struct i2c_client *client)
- {
- struct tas2764_priv *tas2764;
- int result;
- tas2764 = devm_kzalloc(&client->dev, sizeof(struct tas2764_priv),
- GFP_KERNEL);
- if (!tas2764)
- return -ENOMEM;
- tas2764->dev = &client->dev;
- tas2764->irq = client->irq;
- i2c_set_clientdata(client, tas2764);
- dev_set_drvdata(&client->dev, tas2764);
- tas2764->regmap = devm_regmap_init_i2c(client, &tas2764_i2c_regmap);
- if (IS_ERR(tas2764->regmap)) {
- result = PTR_ERR(tas2764->regmap);
- dev_err(&client->dev, "Failed to allocate register map: %d\n",
- result);
- return result;
- }
- if (client->dev.of_node) {
- result = tas2764_parse_dt(&client->dev, tas2764);
- if (result) {
- dev_err(tas2764->dev, "%s: Failed to parse devicetree\n",
- __func__);
- return result;
- }
- }
- return devm_snd_soc_register_component(tas2764->dev,
- &soc_component_driver_tas2764,
- tas2764_dai_driver,
- ARRAY_SIZE(tas2764_dai_driver));
- }
- static const struct i2c_device_id tas2764_i2c_id[] = {
- { "tas2764", 0},
- { }
- };
- MODULE_DEVICE_TABLE(i2c, tas2764_i2c_id);
- #if defined(CONFIG_OF)
- static const struct of_device_id tas2764_of_match[] = {
- { .compatible = "ti,tas2764" },
- {},
- };
- MODULE_DEVICE_TABLE(of, tas2764_of_match);
- #endif
- static struct i2c_driver tas2764_i2c_driver = {
- .driver = {
- .name = "tas2764",
- .of_match_table = of_match_ptr(tas2764_of_match),
- },
- .probe_new = tas2764_i2c_probe,
- .id_table = tas2764_i2c_id,
- };
- module_i2c_driver(tas2764_i2c_driver);
- MODULE_AUTHOR("Dan Murphy <[email protected]>");
- MODULE_DESCRIPTION("TAS2764 I2C Smart Amplifier driver");
- MODULE_LICENSE("GPL v2");
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