| /* |
| * tas2552.c - ALSA SoC Texas Instruments TAS2552 Mono Audio Amplifier |
| * |
| * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com |
| * |
| * Author: Dan Murphy <dmurphy@ti.com> |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/errno.h> |
| #include <linux/device.h> |
| #include <linux/i2c.h> |
| #include <linux/gpio.h> |
| #include <linux/of_gpio.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 <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <sound/soc-dapm.h> |
| #include <sound/tlv.h> |
| #include <sound/tas2552-plat.h> |
| #include <dt-bindings/sound/tas2552.h> |
| |
| #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 <dmurphy@ti.com>"); |
| MODULE_DESCRIPTION("TAS2552 Audio amplifier driver"); |
| MODULE_LICENSE("GPL"); |