// SPDX-License-Identifier: GPL-2.0-only /* * tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier * * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com * * Author: Dan Murphy */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "tas2552.h" static const struct reg_default tas2552_reg_defs[] = { {TAS2552_CFG_1, 0x22}, {TAS2552_CFG_3, 0x80}, {TAS2552_DOUT, 0x00}, {TAS2552_OUTPUT_DATA, 0xc0}, {TAS2552_PDM_CFG, 0x01}, {TAS2552_PGA_GAIN, 0x00}, {TAS2552_BOOST_APT_CTRL, 0x0f}, {TAS2552_RESERVED_0D, 0xbe}, {TAS2552_LIMIT_RATE_HYS, 0x08}, {TAS2552_CFG_2, 0xef}, {TAS2552_SER_CTRL_1, 0x00}, {TAS2552_SER_CTRL_2, 0x00}, {TAS2552_PLL_CTRL_1, 0x10}, {TAS2552_PLL_CTRL_2, 0x00}, {TAS2552_PLL_CTRL_3, 0x00}, {TAS2552_BTIP, 0x8f}, {TAS2552_BTS_CTRL, 0x80}, {TAS2552_LIMIT_RELEASE, 0x04}, {TAS2552_LIMIT_INT_COUNT, 0x00}, {TAS2552_EDGE_RATE_CTRL, 0x40}, {TAS2552_VBAT_DATA, 0x00}, }; #define TAS2552_NUM_SUPPLIES 3 static const char *tas2552_supply_names[TAS2552_NUM_SUPPLIES] = { "vbat", /* vbat voltage */ "iovdd", /* I/O Voltage */ "avdd", /* Analog DAC Voltage */ }; struct tas2552_data { struct snd_soc_component *component; struct regmap *regmap; struct i2c_client *tas2552_client; struct regulator_bulk_data supplies[TAS2552_NUM_SUPPLIES]; struct gpio_desc *enable_gpio; unsigned char regs[TAS2552_VBAT_DATA]; unsigned int pll_clkin; int pll_clk_id; unsigned int pdm_clk; int pdm_clk_id; unsigned int dai_fmt; unsigned int tdm_delay; }; static int tas2552_post_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); switch (event) { case SND_SOC_DAPM_POST_PMU: snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xc0); snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5), (1 << 5)); snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 0); snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, 0); break; case SND_SOC_DAPM_POST_PMD: snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_SWS, TAS2552_SWS); snd_soc_component_update_bits(component, TAS2552_CFG_2, 1, 1); snd_soc_component_update_bits(component, TAS2552_LIMIT_RATE_HYS, (1 << 5), 0); snd_soc_component_write(component, TAS2552_RESERVED_0D, 0xbe); break; } return 0; } /* Input mux controls */ static const char * const tas2552_input_texts[] = { "Digital", "Analog" }; static SOC_ENUM_SINGLE_DECL(tas2552_input_mux_enum, TAS2552_CFG_3, 7, tas2552_input_texts); static const struct snd_kcontrol_new tas2552_input_mux_control = SOC_DAPM_ENUM("Route", tas2552_input_mux_enum); static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] = { SND_SOC_DAPM_INPUT("IN"), /* MUX Controls */ SND_SOC_DAPM_MUX("Input selection", SND_SOC_NOPM, 0, 0, &tas2552_input_mux_control), SND_SOC_DAPM_AIF_IN("DAC IN", "DAC Playback", 0, SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_OUT_DRV("ClassD", TAS2552_CFG_2, 7, 0, NULL, 0), SND_SOC_DAPM_SUPPLY("PLL", TAS2552_CFG_2, 3, 0, NULL, 0), SND_SOC_DAPM_POST("Post Event", tas2552_post_event), SND_SOC_DAPM_OUTPUT("OUT") }; static const struct snd_soc_dapm_route tas2552_audio_map[] = { {"DAC", NULL, "DAC IN"}, {"Input selection", "Digital", "DAC"}, {"Input selection", "Analog", "IN"}, {"ClassD", NULL, "Input selection"}, {"OUT", NULL, "ClassD"}, {"ClassD", NULL, "PLL"}, }; #ifdef CONFIG_PM static void tas2552_sw_shutdown(struct tas2552_data *tas2552, int sw_shutdown) { u8 cfg1_reg = 0; if (!tas2552->component) return; if (sw_shutdown) cfg1_reg = TAS2552_SWS; snd_soc_component_update_bits(tas2552->component, TAS2552_CFG_1, TAS2552_SWS, cfg1_reg); } #endif static int tas2552_setup_pll(struct snd_soc_component *component, struct snd_pcm_hw_params *params) { struct tas2552_data *tas2552 = dev_get_drvdata(component->dev); bool bypass_pll = false; unsigned int pll_clk = params_rate(params) * 512; unsigned int pll_clkin = tas2552->pll_clkin; u8 pll_enable; if (!pll_clkin) { if (tas2552->pll_clk_id != TAS2552_PLL_CLKIN_BCLK) return -EINVAL; pll_clkin = snd_soc_params_to_bclk(params); pll_clkin += tas2552->tdm_delay; } pll_enable = snd_soc_component_read32(component, TAS2552_CFG_2) & TAS2552_PLL_ENABLE; snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, 0); if (pll_clkin == pll_clk) bypass_pll = true; if (bypass_pll) { /* By pass the PLL configuration */ snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_2, TAS2552_PLL_BYPASS, TAS2552_PLL_BYPASS); } else { /* Fill in the PLL control registers for J & D * pll_clk = (.5 * pll_clkin * J.D) / 2^p * Need to fill in J and D here based on incoming freq */ unsigned int d, q, t; u8 j; u8 pll_sel = (tas2552->pll_clk_id << 3) & TAS2552_PLL_SRC_MASK; u8 p = snd_soc_component_read32(component, TAS2552_PLL_CTRL_1); p = (p >> 7); recalc: t = (pll_clk * 2) << p; j = t / pll_clkin; d = t % pll_clkin; t = pll_clkin / 10000; q = d / (t + 1); d = q + ((9999 - pll_clkin % 10000) * (d / t - q)) / 10000; if (d && (pll_clkin < 512000 || pll_clkin > 9200000)) { if (tas2552->pll_clk_id == TAS2552_PLL_CLKIN_BCLK) { pll_clkin = 1800000; pll_sel = (TAS2552_PLL_CLKIN_1_8_FIXED << 3) & TAS2552_PLL_SRC_MASK; } else { pll_clkin = snd_soc_params_to_bclk(params); pll_clkin += tas2552->tdm_delay; pll_sel = (TAS2552_PLL_CLKIN_BCLK << 3) & TAS2552_PLL_SRC_MASK; } goto recalc; } snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_PLL_SRC_MASK, pll_sel); snd_soc_component_update_bits(component, TAS2552_PLL_CTRL_1, TAS2552_PLL_J_MASK, j); /* Will clear the PLL_BYPASS bit */ snd_soc_component_write(component, TAS2552_PLL_CTRL_2, TAS2552_PLL_D_UPPER(d)); snd_soc_component_write(component, TAS2552_PLL_CTRL_3, TAS2552_PLL_D_LOWER(d)); } /* Restore PLL status */ snd_soc_component_update_bits(component, TAS2552_CFG_2, TAS2552_PLL_ENABLE, pll_enable); return 0; } static int tas2552_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 tas2552_data *tas2552 = dev_get_drvdata(component->dev); int cpf; u8 ser_ctrl1_reg, wclk_rate; switch (params_width(params)) { case 16: ser_ctrl1_reg = TAS2552_WORDLENGTH_16BIT; cpf = 32 + tas2552->tdm_delay; break; case 20: ser_ctrl1_reg = TAS2552_WORDLENGTH_20BIT; cpf = 64 + tas2552->tdm_delay; break; case 24: ser_ctrl1_reg = TAS2552_WORDLENGTH_24BIT; cpf = 64 + tas2552->tdm_delay; break; case 32: ser_ctrl1_reg = TAS2552_WORDLENGTH_32BIT; cpf = 64 + tas2552->tdm_delay; break; default: dev_err(component->dev, "Not supported sample size: %d\n", params_width(params)); return -EINVAL; } if (cpf <= 32) ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_32; else if (cpf <= 64) ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_64; else if (cpf <= 128) ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_128; else ser_ctrl1_reg |= TAS2552_CLKSPERFRAME_256; snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, TAS2552_WORDLENGTH_MASK | TAS2552_CLKSPERFRAME_MASK, ser_ctrl1_reg); switch (params_rate(params)) { case 8000: wclk_rate = TAS2552_WCLK_FREQ_8KHZ; break; case 11025: case 12000: wclk_rate = TAS2552_WCLK_FREQ_11_12KHZ; break; case 16000: wclk_rate = TAS2552_WCLK_FREQ_16KHZ; break; case 22050: case 24000: wclk_rate = TAS2552_WCLK_FREQ_22_24KHZ; break; case 32000: wclk_rate = TAS2552_WCLK_FREQ_32KHZ; break; case 44100: case 48000: wclk_rate = TAS2552_WCLK_FREQ_44_48KHZ; break; case 88200: case 96000: wclk_rate = TAS2552_WCLK_FREQ_88_96KHZ; break; case 176400: case 192000: wclk_rate = TAS2552_WCLK_FREQ_176_192KHZ; break; default: dev_err(component->dev, "Not supported sample rate: %d\n", params_rate(params)); return -EINVAL; } snd_soc_component_update_bits(component, TAS2552_CFG_3, TAS2552_WCLK_FREQ_MASK, wclk_rate); return tas2552_setup_pll(component, params); } #define TAS2552_DAI_FMT_MASK (TAS2552_BCLKDIR | \ TAS2552_WCLKDIR | \ TAS2552_DATAFORMAT_MASK) static int tas2552_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_component *component = dai->component; struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); int delay = 0; /* TDM slot selection only valid in DSP_A/_B mode */ if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_A) delay += (tas2552->tdm_delay + 1); else if (tas2552->dai_fmt == SND_SOC_DAIFMT_DSP_B) delay += tas2552->tdm_delay; /* Configure data delay */ snd_soc_component_write(component, TAS2552_SER_CTRL_2, delay); return 0; } static int tas2552_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) { struct snd_soc_component *component = dai->component; struct tas2552_data *tas2552 = dev_get_drvdata(component->dev); u8 serial_format; switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBS_CFS: serial_format = 0x00; break; case SND_SOC_DAIFMT_CBS_CFM: serial_format = TAS2552_WCLKDIR; break; case SND_SOC_DAIFMT_CBM_CFS: serial_format = TAS2552_BCLKDIR; break; case SND_SOC_DAIFMT_CBM_CFM: serial_format = (TAS2552_BCLKDIR | TAS2552_WCLKDIR); break; default: dev_vdbg(component->dev, "DAI Format master is not found\n"); return -EINVAL; } switch (fmt & (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK)) { case (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF): break; case (SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF): case (SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_IB_NF): serial_format |= TAS2552_DATAFORMAT_DSP; break; case (SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_NB_NF): serial_format |= TAS2552_DATAFORMAT_RIGHT_J; break; case (SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_NB_NF): serial_format |= TAS2552_DATAFORMAT_LEFT_J; break; default: dev_vdbg(component->dev, "DAI Format is not found\n"); return -EINVAL; } tas2552->dai_fmt = fmt & SND_SOC_DAIFMT_FORMAT_MASK; snd_soc_component_update_bits(component, TAS2552_SER_CTRL_1, TAS2552_DAI_FMT_MASK, serial_format); return 0; } static int tas2552_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int freq, int dir) { struct snd_soc_component *component = dai->component; struct tas2552_data *tas2552 = dev_get_drvdata(component->dev); u8 reg, mask, val; switch (clk_id) { case TAS2552_PLL_CLKIN_MCLK: case TAS2552_PLL_CLKIN_IVCLKIN: if (freq < 512000 || freq > 24576000) { /* out of range PLL_CLKIN, fall back to use BCLK */ dev_warn(component->dev, "Out of range PLL_CLKIN: %u\n", freq); clk_id = TAS2552_PLL_CLKIN_BCLK; freq = 0; } /* fall through */ case TAS2552_PLL_CLKIN_BCLK: case TAS2552_PLL_CLKIN_1_8_FIXED: mask = TAS2552_PLL_SRC_MASK; val = (clk_id << 3) & mask; /* bit 4:5 in the register */ reg = TAS2552_CFG_1; tas2552->pll_clk_id = clk_id; tas2552->pll_clkin = freq; break; case TAS2552_PDM_CLK_PLL: case TAS2552_PDM_CLK_IVCLKIN: case TAS2552_PDM_CLK_BCLK: case TAS2552_PDM_CLK_MCLK: mask = TAS2552_PDM_CLK_SEL_MASK; val = (clk_id >> 1) & mask; /* bit 0:1 in the register */ reg = TAS2552_PDM_CFG; tas2552->pdm_clk_id = clk_id; tas2552->pdm_clk = freq; break; default: dev_err(component->dev, "Invalid clk id: %d\n", clk_id); return -EINVAL; } snd_soc_component_update_bits(component, reg, mask, val); return 0; } static int tas2552_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 tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); unsigned int lsb; if (unlikely(!tx_mask)) { dev_err(component->dev, "tx masks need to be non 0\n"); return -EINVAL; } /* TDM based on DSP mode requires slots to be adjacent */ lsb = __ffs(tx_mask); if ((lsb + 1) != __fls(tx_mask)) { dev_err(component->dev, "Invalid mask, slots must be adjacent\n"); return -EINVAL; } tas2552->tdm_delay = lsb * slot_width; /* DOUT in high-impedance on inactive bit clocks */ snd_soc_component_update_bits(component, TAS2552_DOUT, TAS2552_SDOUT_TRISTATE, TAS2552_SDOUT_TRISTATE); return 0; } static int tas2552_mute(struct snd_soc_dai *dai, int mute) { u8 cfg1_reg = 0; struct snd_soc_component *component = dai->component; if (mute) cfg1_reg |= TAS2552_MUTE; snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, cfg1_reg); return 0; } #ifdef CONFIG_PM static int tas2552_runtime_suspend(struct device *dev) { struct tas2552_data *tas2552 = dev_get_drvdata(dev); tas2552_sw_shutdown(tas2552, 1); regcache_cache_only(tas2552->regmap, true); regcache_mark_dirty(tas2552->regmap); gpiod_set_value(tas2552->enable_gpio, 0); return 0; } static int tas2552_runtime_resume(struct device *dev) { struct tas2552_data *tas2552 = dev_get_drvdata(dev); gpiod_set_value(tas2552->enable_gpio, 1); tas2552_sw_shutdown(tas2552, 0); regcache_cache_only(tas2552->regmap, false); regcache_sync(tas2552->regmap); return 0; } #endif static const struct dev_pm_ops tas2552_pm = { SET_RUNTIME_PM_OPS(tas2552_runtime_suspend, tas2552_runtime_resume, NULL) }; static const struct snd_soc_dai_ops tas2552_speaker_dai_ops = { .hw_params = tas2552_hw_params, .prepare = tas2552_prepare, .set_sysclk = tas2552_set_dai_sysclk, .set_fmt = tas2552_set_dai_fmt, .set_tdm_slot = tas2552_set_dai_tdm_slot, .digital_mute = tas2552_mute, }; /* Formats supported by TAS2552 driver. */ #define TAS2552_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) /* TAS2552 dai structure. */ static struct snd_soc_dai_driver tas2552_dai[] = { { .name = "tas2552-amplifier", .playback = { .stream_name = "Playback", .channels_min = 2, .channels_max = 2, .rates = SNDRV_PCM_RATE_8000_192000, .formats = TAS2552_FORMATS, }, .ops = &tas2552_speaker_dai_ops, }, }; /* * DAC digital volumes. From -7 to 24 dB in 1 dB steps */ static DECLARE_TLV_DB_SCALE(dac_tlv, -700, 100, 0); static const char * const tas2552_din_source_select[] = { "Muted", "Left", "Right", "Left + Right average", }; static SOC_ENUM_SINGLE_DECL(tas2552_din_source_enum, TAS2552_CFG_3, 3, tas2552_din_source_select); static const struct snd_kcontrol_new tas2552_snd_controls[] = { SOC_SINGLE_TLV("Speaker Driver Playback Volume", TAS2552_PGA_GAIN, 0, 0x1f, 0, dac_tlv), SOC_ENUM("DIN source", tas2552_din_source_enum), }; static int tas2552_component_probe(struct snd_soc_component *component) { struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); int ret; tas2552->component = component; ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies), tas2552->supplies); if (ret != 0) { dev_err(component->dev, "Failed to enable supplies: %d\n", ret); return ret; } gpiod_set_value(tas2552->enable_gpio, 1); ret = pm_runtime_get_sync(component->dev); if (ret < 0) { dev_err(component->dev, "Enabling device failed: %d\n", ret); goto probe_fail; } snd_soc_component_update_bits(component, TAS2552_CFG_1, TAS2552_MUTE, TAS2552_MUTE); snd_soc_component_write(component, TAS2552_CFG_3, TAS2552_I2S_OUT_SEL | TAS2552_DIN_SRC_SEL_AVG_L_R); snd_soc_component_write(component, TAS2552_OUTPUT_DATA, TAS2552_PDM_DATA_SEL_V_I | TAS2552_R_DATA_OUT(TAS2552_DATA_OUT_V_DATA)); snd_soc_component_write(component, TAS2552_BOOST_APT_CTRL, TAS2552_APT_DELAY_200 | TAS2552_APT_THRESH_20_17); snd_soc_component_write(component, TAS2552_CFG_2, TAS2552_BOOST_EN | TAS2552_APT_EN | TAS2552_LIM_EN); return 0; probe_fail: gpiod_set_value(tas2552->enable_gpio, 0); regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies), tas2552->supplies); return ret; } static void tas2552_component_remove(struct snd_soc_component *component) { struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); pm_runtime_put(component->dev); gpiod_set_value(tas2552->enable_gpio, 0); }; #ifdef CONFIG_PM static int tas2552_suspend(struct snd_soc_component *component) { struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); int ret; ret = regulator_bulk_disable(ARRAY_SIZE(tas2552->supplies), tas2552->supplies); if (ret != 0) dev_err(component->dev, "Failed to disable supplies: %d\n", ret); return ret; } static int tas2552_resume(struct snd_soc_component *component) { struct tas2552_data *tas2552 = snd_soc_component_get_drvdata(component); int ret; ret = regulator_bulk_enable(ARRAY_SIZE(tas2552->supplies), tas2552->supplies); if (ret != 0) { dev_err(component->dev, "Failed to enable supplies: %d\n", ret); } return ret; } #else #define tas2552_suspend NULL #define tas2552_resume NULL #endif static const struct snd_soc_component_driver soc_component_dev_tas2552 = { .probe = tas2552_component_probe, .remove = tas2552_component_remove, .suspend = tas2552_suspend, .resume = tas2552_resume, .controls = tas2552_snd_controls, .num_controls = ARRAY_SIZE(tas2552_snd_controls), .dapm_widgets = tas2552_dapm_widgets, .num_dapm_widgets = ARRAY_SIZE(tas2552_dapm_widgets), .dapm_routes = tas2552_audio_map, .num_dapm_routes = ARRAY_SIZE(tas2552_audio_map), .idle_bias_on = 1, .endianness = 1, .non_legacy_dai_naming = 1, }; static const struct regmap_config tas2552_regmap_config = { .reg_bits = 8, .val_bits = 8, .max_register = TAS2552_MAX_REG, .reg_defaults = tas2552_reg_defs, .num_reg_defaults = ARRAY_SIZE(tas2552_reg_defs), .cache_type = REGCACHE_RBTREE, }; static int tas2552_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev; struct tas2552_data *data; int ret; int i; dev = &client->dev; data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); if (data == NULL) return -ENOMEM; data->enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW); if (IS_ERR(data->enable_gpio)) return PTR_ERR(data->enable_gpio); data->tas2552_client = client; data->regmap = devm_regmap_init_i2c(client, &tas2552_regmap_config); if (IS_ERR(data->regmap)) { ret = PTR_ERR(data->regmap); dev_err(&client->dev, "Failed to allocate register map: %d\n", ret); return ret; } for (i = 0; i < ARRAY_SIZE(data->supplies); i++) data->supplies[i].supply = tas2552_supply_names[i]; ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies), data->supplies); if (ret != 0) { dev_err(dev, "Failed to request supplies: %d\n", ret); return ret; } pm_runtime_set_active(&client->dev); pm_runtime_set_autosuspend_delay(&client->dev, 1000); pm_runtime_use_autosuspend(&client->dev); pm_runtime_enable(&client->dev); pm_runtime_mark_last_busy(&client->dev); pm_runtime_put_sync_autosuspend(&client->dev); dev_set_drvdata(&client->dev, data); ret = devm_snd_soc_register_component(&client->dev, &soc_component_dev_tas2552, tas2552_dai, ARRAY_SIZE(tas2552_dai)); if (ret < 0) dev_err(&client->dev, "Failed to register component: %d\n", ret); return ret; } static int tas2552_i2c_remove(struct i2c_client *client) { pm_runtime_disable(&client->dev); return 0; } static const struct i2c_device_id tas2552_id[] = { { "tas2552", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, tas2552_id); #if IS_ENABLED(CONFIG_OF) static const struct of_device_id tas2552_of_match[] = { { .compatible = "ti,tas2552", }, {}, }; MODULE_DEVICE_TABLE(of, tas2552_of_match); #endif static struct i2c_driver tas2552_i2c_driver = { .driver = { .name = "tas2552", .of_match_table = of_match_ptr(tas2552_of_match), .pm = &tas2552_pm, }, .probe = tas2552_probe, .remove = tas2552_i2c_remove, .id_table = tas2552_id, }; module_i2c_driver(tas2552_i2c_driver); MODULE_AUTHOR("Dan Muprhy "); MODULE_DESCRIPTION("TAS2552 Audio amplifier driver"); MODULE_LICENSE("GPL");