From 77b0ce27e1c07d6280e7b80ac3b8b94b820ebac6 Mon Sep 17 00:00:00 2001 From: allocom Date: Thu, 19 Apr 2018 12:12:26 +0530 Subject: [PATCH] Driver and overlay for Allo Katana DAC Allo Katana DAC: Updated default values Signed-off-by: Jaikumar --- sound/soc/bcm/allo-katana-codec.c | 360 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 360 insertions(+) create mode 100644 sound/soc/bcm/allo-katana-codec.c diff --git a/sound/soc/bcm/allo-katana-codec.c b/sound/soc/bcm/allo-katana-codec.c new file mode 100644 index 0000000..99d8076 --- /dev/null +++ b/sound/soc/bcm/allo-katana-codec.c @@ -0,0 +1,360 @@ +/* + * Driver for the ALLO KATANA CODEC + * + * Author: Jaikumar + * Copyright 2018 + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +#define KATANA_CODEC_CHIP_ID 0x30 +#define KATANA_CODEC_VIRT_BASE 0x100 +#define KATANA_CODEC_PAGE 0 + +#define KATANA_CODEC_CHIP_ID_REG (KATANA_CODEC_VIRT_BASE + 0) +#define KATANA_CODEC_RESET (KATANA_CODEC_VIRT_BASE + 1) +#define KATANA_CODEC_VOLUME_1 (KATANA_CODEC_VIRT_BASE + 2) +#define KATANA_CODEC_VOLUME_2 (KATANA_CODEC_VIRT_BASE + 3) +#define KATANA_CODEC_MUTE (KATANA_CODEC_VIRT_BASE + 4) +#define KATANA_CODEC_DSP_PROGRAM (KATANA_CODEC_VIRT_BASE + 5) +#define KATANA_CODEC_DEEMPHASIS (KATANA_CODEC_VIRT_BASE + 6) +#define KATANA_CODEC_DOP (KATANA_CODEC_VIRT_BASE + 7) +#define KATANA_CODEC_FORMAT (KATANA_CODEC_VIRT_BASE + 8) +#define KATANA_CODEC_COMMAND (KATANA_CODEC_VIRT_BASE + 9) +#define KATANA_CODEC_MAX_REGISTER (KATANA_CODEC_VIRT_BASE + 9) + +#define KATANA_CODEC_FMT 0xff +#define KATANA_CODEC_CHAN_MONO 0x00 +#define KATANA_CODEC_CHAN_STEREO 0x80 +#define KATANA_CODEC_ALEN_16 0x10 +#define KATANA_CODEC_ALEN_24 0x20 +#define KATANA_CODEC_ALEN_32 0x30 +#define KATANA_CODEC_RATE_11025 0x01 +#define KATANA_CODEC_RATE_22050 0x02 +#define KATANA_CODEC_RATE_32000 0x03 +#define KATANA_CODEC_RATE_44100 0x04 +#define KATANA_CODEC_RATE_48000 0x05 +#define KATANA_CODEC_RATE_88200 0x06 +#define KATANA_CODEC_RATE_96000 0x07 +#define KATANA_CODEC_RATE_176400 0x08 +#define KATANA_CODEC_RATE_192000 0x09 +#define KATANA_CODEC_RATE_352800 0x0a +#define KATANA_CODEC_RATE_384000 0x0b + + +struct katana_codec_priv { + struct regmap *regmap; + int fmt; +}; + +static const struct reg_default katana_codec_reg_defaults[] = { + { KATANA_CODEC_RESET, 0x00 }, + { KATANA_CODEC_VOLUME_1, 0xF0 }, + { KATANA_CODEC_VOLUME_2, 0xF0 }, + { KATANA_CODEC_MUTE, 0x00 }, + { KATANA_CODEC_DSP_PROGRAM, 0x04 }, + { KATANA_CODEC_DEEMPHASIS, 0x00 }, + { KATANA_CODEC_DOP, 0x00 }, + { KATANA_CODEC_FORMAT, 0xb4 }, +}; + +static const char * const katana_codec_dsp_program_texts[] = { + "Linear Phase Fast Roll-off Filter", + "Linear Phase Slow Roll-off Filter", + "Minimum Phase Fast Roll-off Filter", + "Minimum Phase Slow Roll-off Filter", + "Apodizing Fast Roll-off Filter", + "Corrected Minimum Phase Fast Roll-off Filter", + "Brick Wall Filter", +}; + +static const unsigned int katana_codec_dsp_program_values[] = { + 0, + 1, + 2, + 3, + 4, + 6, + 7, +}; + +static SOC_VALUE_ENUM_SINGLE_DECL(katana_codec_dsp_program, + KATANA_CODEC_DSP_PROGRAM, 0, 0x07, + katana_codec_dsp_program_texts, + katana_codec_dsp_program_values); + +static const char * const katana_codec_deemphasis_texts[] = { + "Bypass", + "32kHz", + "44.1kHz", + "48kHz", +}; + +static const unsigned int katana_codec_deemphasis_values[] = { + 0, + 1, + 2, + 3, +}; + +static SOC_VALUE_ENUM_SINGLE_DECL(katana_codec_deemphasis, + KATANA_CODEC_DEEMPHASIS, 0, 0x03, + katana_codec_deemphasis_texts, + katana_codec_deemphasis_values); + +static const SNDRV_CTL_TLVD_DECLARE_DB_MINMAX(master_tlv, -12700, 0); + +static const struct snd_kcontrol_new katana_codec_controls[] = { + SOC_DOUBLE_R_TLV("Master Playback Volume", KATANA_CODEC_VOLUME_1, + KATANA_CODEC_VOLUME_2, 0, 255, 1, master_tlv), + SOC_DOUBLE("Master Playback Switch", KATANA_CODEC_MUTE, 0, 0, 1, 1), + SOC_ENUM("DSP Program Route", katana_codec_dsp_program), + SOC_ENUM("Deemphasis Route", katana_codec_deemphasis), + SOC_SINGLE("DoP Playback Switch", KATANA_CODEC_DOP, 0, 1, 1) +}; + +static bool katana_codec_readable_register(struct device *dev, unsigned int reg) +{ + switch (reg) { + case KATANA_CODEC_CHIP_ID_REG: + return true; + default: + return reg < 0xff; + } +} + +static int katana_codec_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 katana_codec_priv *katana_codec = snd_soc_component_get_drvdata(component); + int fmt = 0; + int ret; + + dev_dbg(component->card->dev, "hw_params %u Hz, %u channels\n", + params_rate(params), + params_channels(params)); + + switch (katana_codec->fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: // master + if (params_channels(params) == 2) + fmt = KATANA_CODEC_CHAN_STEREO; + else + fmt = KATANA_CODEC_CHAN_MONO; + + switch (params_width(params)) { + case 16: + fmt |= KATANA_CODEC_ALEN_16; + break; + case 24: + fmt |= KATANA_CODEC_ALEN_24; + break; + case 32: + fmt |= KATANA_CODEC_ALEN_32; + break; + default: + dev_err(component->card->dev, "Bad frame size: %d\n", + params_width(params)); + return -EINVAL; + } + + switch (params_rate(params)) { + case 44100: + fmt |= KATANA_CODEC_RATE_44100; + break; + case 48000: + fmt |= KATANA_CODEC_RATE_48000; + break; + case 88200: + fmt |= KATANA_CODEC_RATE_88200; + break; + case 96000: + fmt |= KATANA_CODEC_RATE_96000; + break; + case 176400: + fmt |= KATANA_CODEC_RATE_176400; + break; + case 192000: + fmt |= KATANA_CODEC_RATE_192000; + break; + case 352800: + fmt |= KATANA_CODEC_RATE_352800; + break; + case 384000: + fmt |= KATANA_CODEC_RATE_384000; + break; + default: + dev_err(component->card->dev, "Bad sample rate: %d\n", + params_rate(params)); + return -EINVAL; + } + + ret = regmap_write(katana_codec->regmap, KATANA_CODEC_FORMAT, fmt); + if (ret != 0) { + dev_err(component->card->dev, "Failed to set format: %d\n", ret); + return ret; + } + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int katana_codec_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct snd_soc_component *component = dai->component; + struct katana_codec_priv *katana_codec = snd_soc_component_get_drvdata(component); + + katana_codec->fmt = fmt; + + return 0; +} + +static const struct snd_soc_dai_ops katana_codec_dai_ops = { + .hw_params = katana_codec_hw_params, + .set_fmt = katana_codec_set_fmt, +}; + +static struct snd_soc_dai_driver katana_codec_dai = { + .name = "allo-katana-codec", + .playback = { + .stream_name = "Playback", + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_CONTINUOUS, + .rate_min = 44100, + .rate_max = 384000, + .formats = SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_S32_LE + }, + .ops = &katana_codec_dai_ops, +}; + +static struct snd_soc_component_driver katana_codec_component_driver = { + .idle_bias_on = true, + + .controls = katana_codec_controls, + .num_controls = ARRAY_SIZE(katana_codec_controls), +}; + +static const struct regmap_range_cfg katana_codec_range = { + .name = "Pages", .range_min = KATANA_CODEC_VIRT_BASE, + .range_max = KATANA_CODEC_MAX_REGISTER, + .selector_reg = KATANA_CODEC_PAGE, + .selector_mask = 0xff, + .window_start = 0, .window_len = 0x100, +}; + +const struct regmap_config katana_codec_regmap = { + .reg_bits = 8, + .val_bits = 8, + + .ranges = &katana_codec_range, + .num_ranges = 1, + + .max_register = KATANA_CODEC_MAX_REGISTER, + .readable_reg = katana_codec_readable_register, + .reg_defaults = katana_codec_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(katana_codec_reg_defaults), + .cache_type = REGCACHE_RBTREE, +}; + +static int allo_katana_component_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct regmap *regmap; + struct regmap_config config = katana_codec_regmap; + struct device *dev = &i2c->dev; + struct katana_codec_priv *katana_codec; + unsigned int chip_id = 0; + int ret; + + regmap = devm_regmap_init_i2c(i2c, &config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + katana_codec = devm_kzalloc(dev, sizeof(struct katana_codec_priv), + GFP_KERNEL); + if (!katana_codec) + return -ENOMEM; + + dev_set_drvdata(dev, katana_codec); + katana_codec->regmap = regmap; + + ret = regmap_read(regmap, KATANA_CODEC_CHIP_ID_REG, &chip_id); + if ((ret != 0) || (chip_id != KATANA_CODEC_CHIP_ID)) { + dev_err(dev, "Failed to read Chip or wrong Chip id: %d\n", ret); + return ret; + } + regmap_update_bits(regmap, KATANA_CODEC_RESET, 0x01, 0x01); + msleep(10); + + ret = snd_soc_register_component(dev, &katana_codec_component_driver, + &katana_codec_dai, 1); + if (ret != 0) { + dev_err(dev, "failed to register codec: %d\n", ret); + return ret; + } + + return 0; +} + +static int allo_katana_component_remove(struct i2c_client *i2c) +{ + snd_soc_unregister_component(&i2c->dev); + return 0; +} + +static const struct i2c_device_id allo_katana_component_id[] = { + { "allo-katana-codec", }, + { } +}; +MODULE_DEVICE_TABLE(i2c, allo_katana_component_id); + +static const struct of_device_id allo_katana_codec_of_match[] = { + { .compatible = "allo,allo-katana-codec", }, + { } +}; +MODULE_DEVICE_TABLE(of, allo_katana_codec_of_match); + +static struct i2c_driver allo_katana_component_driver = { + .probe = allo_katana_component_probe, + .remove = allo_katana_component_remove, + .id_table = allo_katana_component_id, + .driver = { + .name = "allo-katana-codec", + .of_match_table = allo_katana_codec_of_match, + }, +}; + +module_i2c_driver(allo_katana_component_driver); + +MODULE_DESCRIPTION("ASoC Allo Katana Codec Driver"); +MODULE_AUTHOR("Jaikumar "); +MODULE_LICENSE("GPL v2"); -- 2.7.4