// SPDX-License-Identifier: GPL-2.0-only // Copyright (c) 2020, Maxim Integrated #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "max98373.h" #include "max98373-sdw.h" struct sdw_stream_data { struct sdw_stream_runtime *sdw_stream; }; static struct reg_default max98373_reg[] = { {MAX98373_R0040_SCP_INIT_STAT_1, 0x00}, {MAX98373_R0041_SCP_INIT_MASK_1, 0x00}, {MAX98373_R0042_SCP_INIT_STAT_2, 0x00}, {MAX98373_R0044_SCP_CTRL, 0x00}, {MAX98373_R0045_SCP_SYSTEM_CTRL, 0x00}, {MAX98373_R0046_SCP_DEV_NUMBER, 0x00}, {MAX98373_R0050_SCP_DEV_ID_0, 0x21}, {MAX98373_R0051_SCP_DEV_ID_1, 0x01}, {MAX98373_R0052_SCP_DEV_ID_2, 0x9F}, {MAX98373_R0053_SCP_DEV_ID_3, 0x87}, {MAX98373_R0054_SCP_DEV_ID_4, 0x08}, {MAX98373_R0055_SCP_DEV_ID_5, 0x00}, {MAX98373_R0060_SCP_FRAME_CTLR, 0x00}, {MAX98373_R0070_SCP_FRAME_CTLR, 0x00}, {MAX98373_R0100_DP1_INIT_STAT, 0x00}, {MAX98373_R0101_DP1_INIT_MASK, 0x00}, {MAX98373_R0102_DP1_PORT_CTRL, 0x00}, {MAX98373_R0103_DP1_BLOCK_CTRL_1, 0x00}, {MAX98373_R0104_DP1_PREPARE_STATUS, 0x00}, {MAX98373_R0105_DP1_PREPARE_CTRL, 0x00}, {MAX98373_R0120_DP1_CHANNEL_EN, 0x00}, {MAX98373_R0122_DP1_SAMPLE_CTRL1, 0x00}, {MAX98373_R0123_DP1_SAMPLE_CTRL2, 0x00}, {MAX98373_R0124_DP1_OFFSET_CTRL1, 0x00}, {MAX98373_R0125_DP1_OFFSET_CTRL2, 0x00}, {MAX98373_R0126_DP1_HCTRL, 0x00}, {MAX98373_R0127_DP1_BLOCK_CTRL3, 0x00}, {MAX98373_R0130_DP1_CHANNEL_EN, 0x00}, {MAX98373_R0132_DP1_SAMPLE_CTRL1, 0x00}, {MAX98373_R0133_DP1_SAMPLE_CTRL2, 0x00}, {MAX98373_R0134_DP1_OFFSET_CTRL1, 0x00}, {MAX98373_R0135_DP1_OFFSET_CTRL2, 0x00}, {MAX98373_R0136_DP1_HCTRL, 0x0136}, {MAX98373_R0137_DP1_BLOCK_CTRL3, 0x00}, {MAX98373_R0300_DP3_INIT_STAT, 0x00}, {MAX98373_R0301_DP3_INIT_MASK, 0x00}, {MAX98373_R0302_DP3_PORT_CTRL, 0x00}, {MAX98373_R0303_DP3_BLOCK_CTRL_1, 0x00}, {MAX98373_R0304_DP3_PREPARE_STATUS, 0x00}, {MAX98373_R0305_DP3_PREPARE_CTRL, 0x00}, {MAX98373_R0320_DP3_CHANNEL_EN, 0x00}, {MAX98373_R0322_DP3_SAMPLE_CTRL1, 0x00}, {MAX98373_R0323_DP3_SAMPLE_CTRL2, 0x00}, {MAX98373_R0324_DP3_OFFSET_CTRL1, 0x00}, {MAX98373_R0325_DP3_OFFSET_CTRL2, 0x00}, {MAX98373_R0326_DP3_HCTRL, 0x00}, {MAX98373_R0327_DP3_BLOCK_CTRL3, 0x00}, {MAX98373_R0330_DP3_CHANNEL_EN, 0x00}, {MAX98373_R0332_DP3_SAMPLE_CTRL1, 0x00}, {MAX98373_R0333_DP3_SAMPLE_CTRL2, 0x00}, {MAX98373_R0334_DP3_OFFSET_CTRL1, 0x00}, {MAX98373_R0335_DP3_OFFSET_CTRL2, 0x00}, {MAX98373_R0336_DP3_HCTRL, 0x00}, {MAX98373_R0337_DP3_BLOCK_CTRL3, 0x00}, {MAX98373_R2000_SW_RESET, 0x00}, {MAX98373_R2001_INT_RAW1, 0x00}, {MAX98373_R2002_INT_RAW2, 0x00}, {MAX98373_R2003_INT_RAW3, 0x00}, {MAX98373_R2004_INT_STATE1, 0x00}, {MAX98373_R2005_INT_STATE2, 0x00}, {MAX98373_R2006_INT_STATE3, 0x00}, {MAX98373_R2007_INT_FLAG1, 0x00}, {MAX98373_R2008_INT_FLAG2, 0x00}, {MAX98373_R2009_INT_FLAG3, 0x00}, {MAX98373_R200A_INT_EN1, 0x00}, {MAX98373_R200B_INT_EN2, 0x00}, {MAX98373_R200C_INT_EN3, 0x00}, {MAX98373_R200D_INT_FLAG_CLR1, 0x00}, {MAX98373_R200E_INT_FLAG_CLR2, 0x00}, {MAX98373_R200F_INT_FLAG_CLR3, 0x00}, {MAX98373_R2010_IRQ_CTRL, 0x00}, {MAX98373_R2014_THERM_WARN_THRESH, 0x10}, {MAX98373_R2015_THERM_SHDN_THRESH, 0x27}, {MAX98373_R2016_THERM_HYSTERESIS, 0x01}, {MAX98373_R2017_THERM_FOLDBACK_SET, 0xC0}, {MAX98373_R2018_THERM_FOLDBACK_EN, 0x00}, {MAX98373_R201E_PIN_DRIVE_STRENGTH, 0x55}, {MAX98373_R2020_PCM_TX_HIZ_EN_1, 0xFE}, {MAX98373_R2021_PCM_TX_HIZ_EN_2, 0xFF}, {MAX98373_R2022_PCM_TX_SRC_1, 0x00}, {MAX98373_R2023_PCM_TX_SRC_2, 0x00}, {MAX98373_R2024_PCM_DATA_FMT_CFG, 0xC0}, {MAX98373_R2025_AUDIO_IF_MODE, 0x00}, {MAX98373_R2026_PCM_CLOCK_RATIO, 0x04}, {MAX98373_R2027_PCM_SR_SETUP_1, 0x08}, {MAX98373_R2028_PCM_SR_SETUP_2, 0x88}, {MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, 0x00}, {MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2, 0x00}, {MAX98373_R202B_PCM_RX_EN, 0x00}, {MAX98373_R202C_PCM_TX_EN, 0x00}, {MAX98373_R202E_ICC_RX_CH_EN_1, 0x00}, {MAX98373_R202F_ICC_RX_CH_EN_2, 0x00}, {MAX98373_R2030_ICC_TX_HIZ_EN_1, 0xFF}, {MAX98373_R2031_ICC_TX_HIZ_EN_2, 0xFF}, {MAX98373_R2032_ICC_LINK_EN_CFG, 0x30}, {MAX98373_R2034_ICC_TX_CNTL, 0x00}, {MAX98373_R2035_ICC_TX_EN, 0x00}, {MAX98373_R2036_SOUNDWIRE_CTRL, 0x05}, {MAX98373_R203D_AMP_DIG_VOL_CTRL, 0x00}, {MAX98373_R203E_AMP_PATH_GAIN, 0x08}, {MAX98373_R203F_AMP_DSP_CFG, 0x02}, {MAX98373_R2040_TONE_GEN_CFG, 0x00}, {MAX98373_R2041_AMP_CFG, 0x03}, {MAX98373_R2042_AMP_EDGE_RATE_CFG, 0x00}, {MAX98373_R2043_AMP_EN, 0x00}, {MAX98373_R2046_IV_SENSE_ADC_DSP_CFG, 0x04}, {MAX98373_R2047_IV_SENSE_ADC_EN, 0x00}, {MAX98373_R2051_MEAS_ADC_SAMPLING_RATE, 0x00}, {MAX98373_R2052_MEAS_ADC_PVDD_FLT_CFG, 0x00}, {MAX98373_R2053_MEAS_ADC_THERM_FLT_CFG, 0x00}, {MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK, 0x00}, {MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK, 0x00}, {MAX98373_R2056_MEAS_ADC_PVDD_CH_EN, 0x00}, {MAX98373_R2090_BDE_LVL_HOLD, 0x00}, {MAX98373_R2091_BDE_GAIN_ATK_REL_RATE, 0x00}, {MAX98373_R2092_BDE_CLIPPER_MODE, 0x00}, {MAX98373_R2097_BDE_L1_THRESH, 0x00}, {MAX98373_R2098_BDE_L2_THRESH, 0x00}, {MAX98373_R2099_BDE_L3_THRESH, 0x00}, {MAX98373_R209A_BDE_L4_THRESH, 0x00}, {MAX98373_R209B_BDE_THRESH_HYST, 0x00}, {MAX98373_R20A8_BDE_L1_CFG_1, 0x00}, {MAX98373_R20A9_BDE_L1_CFG_2, 0x00}, {MAX98373_R20AA_BDE_L1_CFG_3, 0x00}, {MAX98373_R20AB_BDE_L2_CFG_1, 0x00}, {MAX98373_R20AC_BDE_L2_CFG_2, 0x00}, {MAX98373_R20AD_BDE_L2_CFG_3, 0x00}, {MAX98373_R20AE_BDE_L3_CFG_1, 0x00}, {MAX98373_R20AF_BDE_L3_CFG_2, 0x00}, {MAX98373_R20B0_BDE_L3_CFG_3, 0x00}, {MAX98373_R20B1_BDE_L4_CFG_1, 0x00}, {MAX98373_R20B2_BDE_L4_CFG_2, 0x00}, {MAX98373_R20B3_BDE_L4_CFG_3, 0x00}, {MAX98373_R20B4_BDE_INFINITE_HOLD_RELEASE, 0x00}, {MAX98373_R20B5_BDE_EN, 0x00}, {MAX98373_R20B6_BDE_CUR_STATE_READBACK, 0x00}, {MAX98373_R20D1_DHT_CFG, 0x01}, {MAX98373_R20D2_DHT_ATTACK_CFG, 0x02}, {MAX98373_R20D3_DHT_RELEASE_CFG, 0x03}, {MAX98373_R20D4_DHT_EN, 0x00}, {MAX98373_R20E0_LIMITER_THRESH_CFG, 0x00}, {MAX98373_R20E1_LIMITER_ATK_REL_RATES, 0x00}, {MAX98373_R20E2_LIMITER_EN, 0x00}, {MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG, 0x00}, {MAX98373_R20FF_GLOBAL_SHDN, 0x00}, {MAX98373_R21FF_REV_ID, 0x42}, }; static bool max98373_readable_register(struct device *dev, unsigned int reg) { switch (reg) { case MAX98373_R21FF_REV_ID: case MAX98373_R2010_IRQ_CTRL: /* SoundWire Control Port Registers */ case MAX98373_R0040_SCP_INIT_STAT_1 ... MAX98373_R0070_SCP_FRAME_CTLR: /* Soundwire Data Port 1 Registers */ case MAX98373_R0100_DP1_INIT_STAT ... MAX98373_R0137_DP1_BLOCK_CTRL3: /* Soundwire Data Port 3 Registers */ case MAX98373_R0300_DP3_INIT_STAT ... MAX98373_R0337_DP3_BLOCK_CTRL3: case MAX98373_R2000_SW_RESET ... MAX98373_R200C_INT_EN3: case MAX98373_R2014_THERM_WARN_THRESH ... MAX98373_R2018_THERM_FOLDBACK_EN: case MAX98373_R201E_PIN_DRIVE_STRENGTH ... MAX98373_R2036_SOUNDWIRE_CTRL: case MAX98373_R203D_AMP_DIG_VOL_CTRL ... MAX98373_R2043_AMP_EN: case MAX98373_R2046_IV_SENSE_ADC_DSP_CFG ... MAX98373_R2047_IV_SENSE_ADC_EN: case MAX98373_R2051_MEAS_ADC_SAMPLING_RATE ... MAX98373_R2056_MEAS_ADC_PVDD_CH_EN: case MAX98373_R2090_BDE_LVL_HOLD ... MAX98373_R2092_BDE_CLIPPER_MODE: case MAX98373_R2097_BDE_L1_THRESH ... MAX98373_R209B_BDE_THRESH_HYST: case MAX98373_R20A8_BDE_L1_CFG_1 ... MAX98373_R20B3_BDE_L4_CFG_3: case MAX98373_R20B5_BDE_EN ... MAX98373_R20B6_BDE_CUR_STATE_READBACK: case MAX98373_R20D1_DHT_CFG ... MAX98373_R20D4_DHT_EN: case MAX98373_R20E0_LIMITER_THRESH_CFG ... MAX98373_R20E2_LIMITER_EN: case MAX98373_R20FE_DEVICE_AUTO_RESTART_CFG ... MAX98373_R20FF_GLOBAL_SHDN: return true; default: return false; } }; static bool max98373_volatile_reg(struct device *dev, unsigned int reg) { switch (reg) { case MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK: case MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK: case MAX98373_R20B6_BDE_CUR_STATE_READBACK: case MAX98373_R21FF_REV_ID: /* SoundWire Control Port Registers */ case MAX98373_R0040_SCP_INIT_STAT_1 ... MAX98373_R0070_SCP_FRAME_CTLR: /* Soundwire Data Port 1 Registers */ case MAX98373_R0100_DP1_INIT_STAT ... MAX98373_R0137_DP1_BLOCK_CTRL3: /* Soundwire Data Port 3 Registers */ case MAX98373_R0300_DP3_INIT_STAT ... MAX98373_R0337_DP3_BLOCK_CTRL3: case MAX98373_R2000_SW_RESET ... MAX98373_R2009_INT_FLAG3: return true; default: return false; } } static const struct regmap_config max98373_sdw_regmap = { .reg_bits = 32, .val_bits = 8, .max_register = MAX98373_R21FF_REV_ID, .reg_defaults = max98373_reg, .num_reg_defaults = ARRAY_SIZE(max98373_reg), .readable_reg = max98373_readable_register, .volatile_reg = max98373_volatile_reg, .cache_type = REGCACHE_RBTREE, .use_single_read = true, .use_single_write = true, }; /* Power management functions and structure */ static __maybe_unused int max98373_suspend(struct device *dev) { struct max98373_priv *max98373 = dev_get_drvdata(dev); regcache_cache_only(max98373->regmap, true); regcache_mark_dirty(max98373->regmap); return 0; } static __maybe_unused int max98373_resume(struct device *dev) { struct sdw_slave *slave = dev_to_sdw_dev(dev); struct max98373_priv *max98373 = dev_get_drvdata(dev); unsigned long time; if (!slave->unattach_request) goto regmap_sync; time = wait_for_completion_timeout(&slave->initialization_complete, msecs_to_jiffies(2000)); if (!time) { dev_err(dev, "Initialization not complete, timed out\n"); return -ETIMEDOUT; } regmap_sync: slave->unattach_request = 0; regcache_cache_only(max98373->regmap, false); regcache_sync(max98373->regmap); return 0; } static const struct dev_pm_ops max98373_pm = { SET_SYSTEM_SLEEP_PM_OPS(max98373_suspend, max98373_resume) SET_RUNTIME_PM_OPS(max98373_suspend, max98373_resume, NULL) }; static int max98373_read_prop(struct sdw_slave *slave) { struct sdw_slave_prop *prop = &slave->prop; int nval, i, num_of_ports; u32 bit; unsigned long addr; struct sdw_dpn_prop *dpn; /* BITMAP: 00001000 Dataport 3 is active */ prop->source_ports = BIT(3); /* BITMAP: 00000010 Dataport 1 is active */ prop->sink_ports = BIT(1); prop->paging_support = true; prop->clk_stop_timeout = 20; nval = hweight32(prop->source_ports); num_of_ports = nval; prop->src_dpn_prop = devm_kcalloc(&slave->dev, nval, sizeof(*prop->src_dpn_prop), GFP_KERNEL); if (!prop->src_dpn_prop) return -ENOMEM; i = 0; dpn = prop->src_dpn_prop; addr = prop->source_ports; for_each_set_bit(bit, &addr, 32) { dpn[i].num = bit; dpn[i].type = SDW_DPN_FULL; dpn[i].simple_ch_prep_sm = true; dpn[i].ch_prep_timeout = 10; i++; } /* do this again for sink now */ nval = hweight32(prop->sink_ports); num_of_ports += nval; prop->sink_dpn_prop = devm_kcalloc(&slave->dev, nval, sizeof(*prop->sink_dpn_prop), GFP_KERNEL); if (!prop->sink_dpn_prop) return -ENOMEM; i = 0; dpn = prop->sink_dpn_prop; addr = prop->sink_ports; for_each_set_bit(bit, &addr, 32) { dpn[i].num = bit; dpn[i].type = SDW_DPN_FULL; dpn[i].simple_ch_prep_sm = true; dpn[i].ch_prep_timeout = 10; i++; } /* Allocate port_ready based on num_of_ports */ slave->port_ready = devm_kcalloc(&slave->dev, num_of_ports, sizeof(*slave->port_ready), GFP_KERNEL); if (!slave->port_ready) return -ENOMEM; /* Initialize completion */ for (i = 0; i < num_of_ports; i++) init_completion(&slave->port_ready[i]); /* set the timeout values */ prop->clk_stop_timeout = 20; return 0; } static int max98373_io_init(struct sdw_slave *slave) { struct device *dev = &slave->dev; struct max98373_priv *max98373 = dev_get_drvdata(dev); if (max98373->pm_init_once) { regcache_cache_only(max98373->regmap, false); regcache_cache_bypass(max98373->regmap, true); } /* * PM runtime is only enabled when a Slave reports as Attached */ if (!max98373->pm_init_once) { /* set autosuspend parameters */ pm_runtime_set_autosuspend_delay(dev, 3000); pm_runtime_use_autosuspend(dev); /* update count of parent 'active' children */ pm_runtime_set_active(dev); /* make sure the device does not suspend immediately */ pm_runtime_mark_last_busy(dev); pm_runtime_enable(dev); } pm_runtime_get_noresume(dev); /* Software Reset */ max98373_reset(max98373, dev); /* Set soundwire mode */ regmap_write(max98373->regmap, MAX98373_R2025_AUDIO_IF_MODE, 3); /* Enable ADC */ regmap_write(max98373->regmap, MAX98373_R2047_IV_SENSE_ADC_EN, 3); /* Set default Soundwire clock */ regmap_write(max98373->regmap, MAX98373_R2036_SOUNDWIRE_CTRL, 5); /* Set default sampling rate for speaker and IVDAC */ regmap_write(max98373->regmap, MAX98373_R2028_PCM_SR_SETUP_2, 0x88); /* IV default slot configuration */ regmap_write(max98373->regmap, MAX98373_R2020_PCM_TX_HIZ_EN_1, 0xFF); regmap_write(max98373->regmap, MAX98373_R2021_PCM_TX_HIZ_EN_2, 0xFF); /* L/R mix configuration */ regmap_write(max98373->regmap, MAX98373_R2029_PCM_TO_SPK_MONO_MIX_1, 0x80); regmap_write(max98373->regmap, MAX98373_R202A_PCM_TO_SPK_MONO_MIX_2, 0x1); /* Enable DC blocker */ regmap_write(max98373->regmap, MAX98373_R203F_AMP_DSP_CFG, 0x3); /* Enable IMON VMON DC blocker */ regmap_write(max98373->regmap, MAX98373_R2046_IV_SENSE_ADC_DSP_CFG, 0x7); /* voltage, current slot configuration */ regmap_write(max98373->regmap, MAX98373_R2022_PCM_TX_SRC_1, (max98373->i_slot << MAX98373_PCM_TX_CH_SRC_A_I_SHIFT | max98373->v_slot) & 0xFF); if (max98373->v_slot < 8) regmap_update_bits(max98373->regmap, MAX98373_R2020_PCM_TX_HIZ_EN_1, 1 << max98373->v_slot, 0); else regmap_update_bits(max98373->regmap, MAX98373_R2021_PCM_TX_HIZ_EN_2, 1 << (max98373->v_slot - 8), 0); if (max98373->i_slot < 8) regmap_update_bits(max98373->regmap, MAX98373_R2020_PCM_TX_HIZ_EN_1, 1 << max98373->i_slot, 0); else regmap_update_bits(max98373->regmap, MAX98373_R2021_PCM_TX_HIZ_EN_2, 1 << (max98373->i_slot - 8), 0); /* speaker feedback slot configuration */ regmap_write(max98373->regmap, MAX98373_R2023_PCM_TX_SRC_2, max98373->spkfb_slot & 0xFF); /* Set interleave mode */ if (max98373->interleave_mode) regmap_update_bits(max98373->regmap, MAX98373_R2024_PCM_DATA_FMT_CFG, MAX98373_PCM_TX_CH_INTERLEAVE_MASK, MAX98373_PCM_TX_CH_INTERLEAVE_MASK); /* Speaker enable */ regmap_update_bits(max98373->regmap, MAX98373_R2043_AMP_EN, MAX98373_SPK_EN_MASK, 1); regmap_write(max98373->regmap, MAX98373_R20B5_BDE_EN, 1); regmap_write(max98373->regmap, MAX98373_R20E2_LIMITER_EN, 1); if (max98373->pm_init_once) { regcache_cache_bypass(max98373->regmap, false); regcache_mark_dirty(max98373->regmap); } max98373->pm_init_once = true; max98373->hw_init = true; pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev); return 0; } static int max98373_clock_calculate(struct sdw_slave *slave, unsigned int clk_freq) { int x, y; static const int max98373_clk_family[] = { 7680000, 8400000, 9600000, 11289600, 12000000, 12288000, 13000000 }; for (x = 0; x < 4; x++) for (y = 0; y < ARRAY_SIZE(max98373_clk_family); y++) if (clk_freq == (max98373_clk_family[y] >> x)) return (x << 3) + y; /* Set default clock (12.288 Mhz) if the value is not in the list */ dev_err(&slave->dev, "Requested clock not found. (clk_freq = %d)\n", clk_freq); return 0x5; } static int max98373_clock_config(struct sdw_slave *slave, struct sdw_bus_params *params) { struct device *dev = &slave->dev; struct max98373_priv *max98373 = dev_get_drvdata(dev); unsigned int clk_freq, value; clk_freq = (params->curr_dr_freq >> 1); /* * Select the proper value for the register based on the * requested clock. If the value is not in the list, * use reasonable default - 12.288 Mhz */ value = max98373_clock_calculate(slave, clk_freq); /* SWCLK */ regmap_write(max98373->regmap, MAX98373_R2036_SOUNDWIRE_CTRL, value); /* The default Sampling Rate value for IV is 48KHz*/ regmap_write(max98373->regmap, MAX98373_R2028_PCM_SR_SETUP_2, 0x88); return 0; } #define MAX98373_RATES SNDRV_PCM_RATE_8000_96000 #define MAX98373_FORMATS (SNDRV_PCM_FMTBIT_S32_LE) static int max98373_sdw_dai_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 max98373_priv *max98373 = snd_soc_component_get_drvdata(component); struct sdw_stream_config stream_config; struct sdw_port_config port_config; enum sdw_data_direction direction; struct sdw_stream_data *stream; int ret, chan_sz, sampling_rate; stream = snd_soc_dai_get_dma_data(dai, substream); if (!stream) return -EINVAL; if (!max98373->slave) return -EINVAL; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { direction = SDW_DATA_DIR_RX; port_config.num = 1; } else { direction = SDW_DATA_DIR_TX; port_config.num = 3; } stream_config.frame_rate = params_rate(params); stream_config.bps = snd_pcm_format_width(params_format(params)); stream_config.direction = direction; if (max98373->slot && direction == SDW_DATA_DIR_RX) { stream_config.ch_count = max98373->slot; port_config.ch_mask = max98373->rx_mask; } else { /* only IV are supported by capture */ if (direction == SDW_DATA_DIR_TX) stream_config.ch_count = 2; else stream_config.ch_count = params_channels(params); port_config.ch_mask = GENMASK((int)stream_config.ch_count - 1, 0); } ret = sdw_stream_add_slave(max98373->slave, &stream_config, &port_config, 1, stream->sdw_stream); if (ret) { dev_err(dai->dev, "Unable to configure port\n"); return ret; } if (params_channels(params) > 16) { dev_err(component->dev, "Unsupported channels %d\n", params_channels(params)); return -EINVAL; } /* Channel size configuration */ switch (snd_pcm_format_width(params_format(params))) { case 16: chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_16; break; case 24: chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_24; break; case 32: chan_sz = MAX98373_PCM_MODE_CFG_CHANSZ_32; break; default: dev_err(component->dev, "Channel size unsupported %d\n", params_format(params)); return -EINVAL; } max98373->ch_size = snd_pcm_format_width(params_format(params)); regmap_update_bits(max98373->regmap, MAX98373_R2024_PCM_DATA_FMT_CFG, MAX98373_PCM_MODE_CFG_CHANSZ_MASK, chan_sz); dev_dbg(component->dev, "Format supported %d", params_format(params)); /* Sampling rate configuration */ switch (params_rate(params)) { case 8000: sampling_rate = MAX98373_PCM_SR_SET1_SR_8000; break; case 11025: sampling_rate = MAX98373_PCM_SR_SET1_SR_11025; break; case 12000: sampling_rate = MAX98373_PCM_SR_SET1_SR_12000; break; case 16000: sampling_rate = MAX98373_PCM_SR_SET1_SR_16000; break; case 22050: sampling_rate = MAX98373_PCM_SR_SET1_SR_22050; break; case 24000: sampling_rate = MAX98373_PCM_SR_SET1_SR_24000; break; case 32000: sampling_rate = MAX98373_PCM_SR_SET1_SR_32000; break; case 44100: sampling_rate = MAX98373_PCM_SR_SET1_SR_44100; break; case 48000: sampling_rate = MAX98373_PCM_SR_SET1_SR_48000; break; case 88200: sampling_rate = MAX98373_PCM_SR_SET1_SR_88200; break; case 96000: sampling_rate = MAX98373_PCM_SR_SET1_SR_96000; break; default: dev_err(component->dev, "Rate %d is not supported\n", params_rate(params)); return -EINVAL; } /* set correct sampling frequency */ regmap_update_bits(max98373->regmap, MAX98373_R2028_PCM_SR_SETUP_2, MAX98373_PCM_SR_SET2_SR_MASK, sampling_rate << MAX98373_PCM_SR_SET2_SR_SHIFT); /* set sampling rate of IV */ regmap_update_bits(max98373->regmap, MAX98373_R2028_PCM_SR_SETUP_2, MAX98373_PCM_SR_SET2_IVADC_SR_MASK, sampling_rate); return 0; } static int max98373_pcm_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_component *component = dai->component; struct max98373_priv *max98373 = snd_soc_component_get_drvdata(component); struct sdw_stream_data *stream = snd_soc_dai_get_dma_data(dai, substream); if (!max98373->slave) return -EINVAL; sdw_stream_remove_slave(max98373->slave, stream->sdw_stream); return 0; } static int max98373_set_sdw_stream(struct snd_soc_dai *dai, void *sdw_stream, int direction) { struct sdw_stream_data *stream; if (!sdw_stream) return 0; stream = kzalloc(sizeof(*stream), GFP_KERNEL); if (!stream) return -ENOMEM; stream->sdw_stream = sdw_stream; /* Use tx_mask or rx_mask to configure stream tag and set dma_data */ if (direction == SNDRV_PCM_STREAM_PLAYBACK) dai->playback_dma_data = stream; else dai->capture_dma_data = stream; return 0; } static void max98373_shutdown(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct sdw_stream_data *stream; stream = snd_soc_dai_get_dma_data(dai, substream); snd_soc_dai_set_dma_data(dai, substream, NULL); kfree(stream); } static int max98373_sdw_set_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 max98373_priv *max98373 = snd_soc_component_get_drvdata(component); /* tx_mask is unused since it's irrelevant for I/V feedback */ if (tx_mask) return -EINVAL; if (!rx_mask && !slots && !slot_width) max98373->tdm_mode = false; else max98373->tdm_mode = true; max98373->rx_mask = rx_mask; max98373->slot = slots; return 0; } static const struct snd_soc_dai_ops max98373_dai_sdw_ops = { .hw_params = max98373_sdw_dai_hw_params, .hw_free = max98373_pcm_hw_free, .set_sdw_stream = max98373_set_sdw_stream, .shutdown = max98373_shutdown, .set_tdm_slot = max98373_sdw_set_tdm_slot, }; static struct snd_soc_dai_driver max98373_sdw_dai[] = { { .name = "max98373-aif1", .playback = { .stream_name = "HiFi Playback", .channels_min = 1, .channels_max = 2, .rates = MAX98373_RATES, .formats = MAX98373_FORMATS, }, .capture = { .stream_name = "HiFi Capture", .channels_min = 1, .channels_max = 2, .rates = MAX98373_RATES, .formats = MAX98373_FORMATS, }, .ops = &max98373_dai_sdw_ops, } }; static int max98373_init(struct sdw_slave *slave, struct regmap *regmap) { struct max98373_priv *max98373; int ret; struct device *dev = &slave->dev; /* Allocate and assign private driver data structure */ max98373 = devm_kzalloc(dev, sizeof(*max98373), GFP_KERNEL); if (!max98373) return -ENOMEM; dev_set_drvdata(dev, max98373); max98373->regmap = regmap; max98373->slave = slave; /* Read voltage and slot configuration */ max98373_slot_config(dev, max98373); max98373->hw_init = false; max98373->pm_init_once = false; /* codec registration */ ret = devm_snd_soc_register_component(dev, &soc_codec_dev_max98373_sdw, max98373_sdw_dai, ARRAY_SIZE(max98373_sdw_dai)); if (ret < 0) dev_err(dev, "Failed to register codec: %d\n", ret); return ret; } static int max98373_update_status(struct sdw_slave *slave, enum sdw_slave_status status) { struct max98373_priv *max98373 = dev_get_drvdata(&slave->dev); if (status == SDW_SLAVE_UNATTACHED) max98373->hw_init = false; /* * Perform initialization only if slave status is SDW_SLAVE_ATTACHED */ if (max98373->hw_init || status != SDW_SLAVE_ATTACHED) return 0; /* perform I/O transfers required for Slave initialization */ return max98373_io_init(slave); } static int max98373_bus_config(struct sdw_slave *slave, struct sdw_bus_params *params) { int ret; ret = max98373_clock_config(slave, params); if (ret < 0) dev_err(&slave->dev, "Invalid clk config"); return ret; } /* * slave_ops: callbacks for get_clock_stop_mode, clock_stop and * port_prep are not defined for now */ static struct sdw_slave_ops max98373_slave_ops = { .read_prop = max98373_read_prop, .update_status = max98373_update_status, .bus_config = max98373_bus_config, }; static int max98373_sdw_probe(struct sdw_slave *slave, const struct sdw_device_id *id) { struct regmap *regmap; /* Regmap Initialization */ regmap = devm_regmap_init_sdw(slave, &max98373_sdw_regmap); if (IS_ERR(regmap)) return PTR_ERR(regmap); return max98373_init(slave, regmap); } #if defined(CONFIG_OF) static const struct of_device_id max98373_of_match[] = { { .compatible = "maxim,max98373", }, {}, }; MODULE_DEVICE_TABLE(of, max98373_of_match); #endif #ifdef CONFIG_ACPI static const struct acpi_device_id max98373_acpi_match[] = { { "MX98373", 0 }, {}, }; MODULE_DEVICE_TABLE(acpi, max98373_acpi_match); #endif static const struct sdw_device_id max98373_id[] = { SDW_SLAVE_ENTRY(0x019F, 0x8373, 0), {}, }; MODULE_DEVICE_TABLE(sdw, max98373_id); static struct sdw_driver max98373_sdw_driver = { .driver = { .name = "max98373", .owner = THIS_MODULE, .of_match_table = of_match_ptr(max98373_of_match), .acpi_match_table = ACPI_PTR(max98373_acpi_match), .pm = &max98373_pm, }, .probe = max98373_sdw_probe, .remove = NULL, .ops = &max98373_slave_ops, .id_table = max98373_id, }; module_sdw_driver(max98373_sdw_driver); MODULE_DESCRIPTION("ASoC MAX98373 driver SDW"); MODULE_AUTHOR("Oleg Sherbakov "); MODULE_LICENSE("GPL v2");