target/linux/brcm2708/patches-4.19/950-0724-adds-the-Hifiberry-DAC-ADC-PRO-version.patch

   1 From 9404c34f9d9aef6f1c5a8f8c223865a5adb81518 Mon Sep 17 00:00:00 2001
   2 From: Joerg Schambacher <joscha@schambacher.com>
   3 Date: Tue, 23 Jul 2019 16:57:35 +0200
   4 Subject: [PATCH 724/725] adds the Hifiberry DAC+ADC PRO version
   5
   6 This adds the driver for the DAC+ADC PRO version of the Hifiberry soundcard with software controlled PCM1863 ADC
   7 Signed-off-by: Joerg Schambacher joerg@i2audio.com
   8 ---
   9  arch/arm/boot/dts/overlays/Makefile           |   1 +
  10  arch/arm/boot/dts/overlays/README             |  21 +
  11  .../hifiberry-dacplusadcpro-overlay.dts       |  64 +++
  12  arch/arm/configs/bcm2709_defconfig            |   1 +
  13  arch/arm/configs/bcm2711_defconfig            |   1 +
  14  arch/arm/configs/bcmrpi_defconfig             |   1 +
  15  sound/soc/bcm/Kconfig                         |   8 +
  16  sound/soc/bcm/Makefile                        |   2 +
  17  sound/soc/bcm/hifiberry_dacplusadcpro.c       | 538 ++++++++++++++++++
  18  9 files changed, 637 insertions(+)
  19  create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
  20  create mode 100644 sound/soc/bcm/hifiberry_dacplusadcpro.c
  21
  22 --- a/arch/arm/boot/dts/overlays/Makefile
  23 +++ b/arch/arm/boot/dts/overlays/Makefile
  24 @@ -53,6 +53,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  25         hifiberry-dac.dtbo \
  26         hifiberry-dacplus.dtbo \
  27         hifiberry-dacplusadc.dtbo \
  28 +       hifiberry-dacplusadcpro.dtbo \
  29         hifiberry-digi.dtbo \
  30         hifiberry-digi-pro.dtbo \
  31         hy28a.dtbo \
  32 --- a/arch/arm/boot/dts/overlays/README
  33 +++ b/arch/arm/boot/dts/overlays/README
  34 @@ -883,6 +883,27 @@ Params: 24db_digital_gain       Allow ga
  35                                  master for bit clock and frame clock.
  36
  37
  38 +Name:   hifiberry-dacplusadcpro
  39 +Info:   Configures the HifiBerry DAC+ADC PRO audio card
  40 +Load:   dtoverlay=hifiberry-dacplusadcpro,<param>=<val>
  41 +Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
  42 +                                Digital volume control. Enable with
  43 +                                "dtoverlay=hifiberry-dacplusadcpro,24db_digital_gain"
  44 +                                (The default behaviour is that the Digital
  45 +                                volume control is limited to a maximum of
  46 +                                0dB. ie. it can attenuate but not provide
  47 +                                gain. For most users, this will be desired
  48 +                                as it will prevent clipping. By appending
  49 +                                the 24dB_digital_gain parameter, the Digital
  50 +                                volume control will allow up to 24dB of
  51 +                                gain. If this parameter is enabled, it is the
  52 +                                responsibility of the user to ensure that
  53 +                                the Digital volume control is set to a value
  54 +                                that does not result in clipping/distortion!)
  55 +        slave                   Force DAC+ADC Pro into slave mode, using Pi as
  56 +                                master for bit clock and frame clock.
  57 +
  58 +
  59  Name:   hifiberry-digi
  60  Info:   Configures the HifiBerry Digi and Digi+ audio card
  61  Load:   dtoverlay=hifiberry-digi
  62 --- /dev/null
  63 +++ b/arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
  64 @@ -0,0 +1,64 @@
  65 +// Definitions for HiFiBerry DAC+ADC PRO
  66 +/dts-v1/;
  67 +/plugin/;
  68 +
  69 +/ {
  70 +       compatible = "brcm,bcm2708";
  71 +
  72 +       fragment@0 {
  73 +               target-path = "/clocks";
  74 +               __overlay__ {
  75 +                       dacpro_osc: dacpro_osc {
  76 +                               compatible = "hifiberry,dacpro-clk";
  77 +                               #clock-cells = <0>;
  78 +                       };
  79 +               };
  80 +       };
  81 +
  82 +       fragment@1 {
  83 +               target = <&i2s>;
  84 +               __overlay__ {
  85 +                       status = "okay";
  86 +               };
  87 +       };
  88 +
  89 +       fragment@2 {
  90 +               target = <&i2c1>;
  91 +               __overlay__ {
  92 +                       #address-cells = <1>;
  93 +                       #size-cells = <0>;
  94 +                       status = "okay";
  95 +
  96 +                       hb_dac: pcm5122@4d {
  97 +                               #sound-dai-cells = <0>;
  98 +                               compatible = "ti,pcm5122";
  99 +                               reg = <0x4d>;
 100 +                               clocks = <&dacpro_osc>;
 101 +                               status = "okay";
 102 +                       };
 103 +                       hb_adc: pcm186x@4a {
 104 +                               #sound-dai-cells = <0>;
 105 +                               compatible = "ti,pcm1863";
 106 +                               reg = <0x4a>;
 107 +                               clocks = <&dacpro_osc>;
 108 +                               status = "okay";
 109 +                       };
 110 +               };
 111 +       };
 112 +
 113 +       fragment@3 {
 114 +               target = <&sound>;
 115 +               hifiberry_dacplusadcpro: __overlay__ {
 116 +                       compatible = "hifiberry,hifiberry-dacplusadcpro";
 117 +                       audio-codec = <&hb_dac &hb_adc>;
 118 +                       i2s-controller = <&i2s>;
 119 +                       status = "okay";
 120 +               };
 121 +       };
 122 +
 123 +       __overrides__ {
 124 +               24db_digital_gain =
 125 +                       <&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,24db_digital_gain?";
 126 +               slave = <&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,slave?";
 127 +       };
 128 +};
 129 --- a/arch/arm/configs/bcm2709_defconfig
 130 +++ b/arch/arm/configs/bcm2709_defconfig
 131 @@ -961,6 +961,7 @@ CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SO
 132  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC=m
 133  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS=m
 134  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC=m
 135 +CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO=m
 136  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
 137  CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
 138  CONFIG_SND_BCM2708_SOC_RPI_CIRRUS=m
 139 --- a/arch/arm/configs/bcm2711_defconfig
 140 +++ b/arch/arm/configs/bcm2711_defconfig
 141 @@ -972,6 +972,7 @@ CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SO
 142  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC=m
 143  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS=m
 144  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC=m
 145 +CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO=m
 146  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
 147  CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
 148  CONFIG_SND_BCM2708_SOC_RPI_CIRRUS=m
 149 --- a/arch/arm/configs/bcmrpi_defconfig
 150 +++ b/arch/arm/configs/bcmrpi_defconfig
 151 @@ -953,6 +953,7 @@ CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SO
 152  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC=m
 153  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS=m
 154  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC=m
 155 +CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO=m
 156  CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
 157  CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
 158  CONFIG_SND_BCM2708_SOC_RPI_CIRRUS=m
 159 --- a/sound/soc/bcm/Kconfig
 160 +++ b/sound/soc/bcm/Kconfig
 161 @@ -48,6 +48,14 @@ config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
 162          help
 163           Say Y or M if you want to add support for HifiBerry DAC+ADC.
 164
 165 +config SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO
 166 +        tristate "Support for HifiBerry DAC+ADC PRO"
 167 +        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
 168 +        select SND_SOC_PCM512x_I2C
 169 +       select SND_SOC_PCM186X_I2C
 170 +        help
 171 +         Say Y or M if you want to add support for HifiBerry DAC+ADC PRO.
 172 +
 173  config SND_BCM2708_SOC_HIFIBERRY_DIGI
 174          tristate "Support for HifiBerry Digi"
 175          depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
 176 --- a/sound/soc/bcm/Makefile
 177 +++ b/sound/soc/bcm/Makefile
 178 @@ -14,6 +14,7 @@ snd-soc-googlevoicehat-codec-objs := goo
 179  # BCM2708 Machine Support
 180  snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
 181  snd-soc-hifiberry-dacplusadc-objs := hifiberry_dacplusadc.o
 182 +snd-soc-hifiberry-dacplusadcpro-objs := hifiberry_dacplusadcpro.o
 183  snd-soc-justboom-dac-objs := justboom-dac.o
 184  snd-soc-rpi-cirrus-objs := rpi-cirrus.o
 185  snd-soc-rpi-proto-objs := rpi-proto.o
 186 @@ -38,6 +39,7 @@ snd-soc-rpi-wm8804-soundcard-objs := rpi
 187  obj-$(CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD)  += snd-soc-googlevoicehat-codec.o
 188  obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
 189  obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC) += snd-soc-hifiberry-dacplusadc.o
 190 +obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO) += snd-soc-hifiberry-dacplusadcpro.o
 191  obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
 192  obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o
 193  obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
 194 --- /dev/null
 195 +++ b/sound/soc/bcm/hifiberry_dacplusadcpro.c
 196 @@ -0,0 +1,538 @@
 197 +/*
 198 + * ASoC Driver for HiFiBerry DAC+ / DAC Pro with ADC PRO Version (SW control)
 199 + *
 200 + * Author:     Daniel Matuschek, Stuart MacLean <stuart@hifiberry.com>
 201 + *             Copyright 2014-2015
 202 + *             based on code by Florian Meier <florian.meier@koalo.de>
 203 + *             ADC added by Joerg Schambacher <joerg@i2audio.com>
 204 + *             Copyright 2018-19
 205 + *
 206 + * This program is free software; you can redistribute it and/or
 207 + * modify it under the terms of the GNU General Public License
 208 + * version 2 as published by the Free Software Foundation.
 209 + *
 210 + * This program is distributed in the hope that it will be useful, but
 211 + * WITHOUT ANY WARRANTY; without even the implied warranty of
 212 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 213 + * General Public License for more details.
 214 + */
 215 +
 216 +#include <linux/module.h>
 217 +#include <linux/platform_device.h>
 218 +#include <linux/kernel.h>
 219 +#include <linux/clk.h>
 220 +#include <linux/kernel.h>
 221 +#include <linux/module.h>
 222 +#include <linux/of.h>
 223 +#include <linux/slab.h>
 224 +#include <linux/delay.h>
 225 +
 226 +#include <sound/core.h>
 227 +#include <sound/pcm.h>
 228 +#include <sound/pcm_params.h>
 229 +#include <sound/soc.h>
 230 +#include <sound/jack.h>
 231 +#include <sound/tlv.h>
 232 +
 233 +#include "../codecs/pcm512x.h"
 234 +#include "../codecs/pcm186x.h"
 235 +
 236 +#define HIFIBERRY_DACPRO_NOCLOCK 0
 237 +#define HIFIBERRY_DACPRO_CLK44EN 1
 238 +#define HIFIBERRY_DACPRO_CLK48EN 2
 239 +
 240 +struct pcm512x_priv {
 241 +       struct regmap *regmap;
 242 +       struct clk *sclk;
 243 +};
 244 +
 245 +/* Clock rate of CLK44EN attached to GPIO6 pin */
 246 +#define CLK_44EN_RATE 22579200UL
 247 +/* Clock rate of CLK48EN attached to GPIO3 pin */
 248 +#define CLK_48EN_RATE 24576000UL
 249 +
 250 +static bool slave;
 251 +static bool snd_rpi_hifiberry_is_dacpro;
 252 +static bool digital_gain_0db_limit = true;
 253 +
 254 +static const unsigned int pcm186x_adc_input_channel_sel_value[] = {
 255 +       0x00, 0x01, 0x02, 0x03, 0x10
 256 +};
 257 +
 258 +static const char * const pcm186x_adcl_input_channel_sel_text[] = {
 259 +       "No Select",
 260 +       "VINL1[SE]",                                    /* Default for ADCL */
 261 +       "VINL2[SE]",
 262 +       "VINL2[SE] + VINL1[SE]",
 263 +       "{VIN1P, VIN1M}[DIFF]"
 264 +};
 265 +
 266 +static const char * const pcm186x_adcr_input_channel_sel_text[] = {
 267 +       "No Select",
 268 +       "VINR1[SE]",                                    /* Default for ADCR */
 269 +       "VINR2[SE]",
 270 +       "VINR2[SE] + VINR1[SE]",
 271 +       "{VIN2P, VIN2M}[DIFF]"
 272 +};
 273 +
 274 +static const struct soc_enum pcm186x_adc_input_channel_sel[] = {
 275 +       SOC_VALUE_ENUM_SINGLE(PCM186X_ADC1_INPUT_SEL_L, 0,
 276 +                             PCM186X_ADC_INPUT_SEL_MASK,
 277 +                             ARRAY_SIZE(pcm186x_adcl_input_channel_sel_text),
 278 +                             pcm186x_adcl_input_channel_sel_text,
 279 +                             pcm186x_adc_input_channel_sel_value),
 280 +       SOC_VALUE_ENUM_SINGLE(PCM186X_ADC1_INPUT_SEL_R, 0,
 281 +                             PCM186X_ADC_INPUT_SEL_MASK,
 282 +                             ARRAY_SIZE(pcm186x_adcr_input_channel_sel_text),
 283 +                             pcm186x_adcr_input_channel_sel_text,
 284 +                             pcm186x_adc_input_channel_sel_value),
 285 +};
 286 +
 287 +static const unsigned int pcm186x_mic_bias_sel_value[] = {
 288 +       0x00, 0x01, 0x11
 289 +};
 290 +
 291 +static const char * const pcm186x_mic_bias_sel_text[] = {
 292 +       "Mic Bias off",
 293 +       "Mic Bias on",
 294 +       "Mic Bias with Bypass Resistor"
 295 +};
 296 +
 297 +static const struct soc_enum pcm186x_mic_bias_sel[] = {
 298 +       SOC_VALUE_ENUM_SINGLE(PCM186X_MIC_BIAS_CTRL, 0,
 299 +                             GENMASK(4, 0),
 300 +                             ARRAY_SIZE(pcm186x_mic_bias_sel_text),
 301 +                             pcm186x_mic_bias_sel_text,
 302 +                             pcm186x_mic_bias_sel_value),
 303 +};
 304 +
 305 +static const unsigned int pcm186x_gain_sel_value[] = {
 306 +       0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
 307 +       0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
 308 +       0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
 309 +       0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
 310 +       0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
 311 +       0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
 312 +       0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
 313 +       0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
 314 +       0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
 315 +       0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
 316 +       0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
 317 +       0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
 318 +       0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
 319 +       0x50
 320 +};
 321 +
 322 +static const char * const pcm186x_gain_sel_text[] = {
 323 +       "-12.0dB", "-11.5dB", "-11.0dB", "-10.5dB", "-10.0dB", "-9.5dB",
 324 +       "-9.0dB", "-8.5dB", "-8.0dB", "-7.5dB", "-7.0dB", "-6.5dB",
 325 +       "-6.0dB", "-5.5dB", "-5.0dB", "-4.5dB", "-4.0dB", "-3.5dB",
 326 +       "-3.0dB", "-2.5dB", "-2.0dB", "-1.5dB", "-1.0dB", "-0.5dB",
 327 +       "0.0dB", "0.5dB", "1.0dB", "1.5dB", "2.0dB", "2.5dB",
 328 +       "3.0dB", "3.5dB", "4.0dB", "4.5dB", "5.0dB", "5.5dB",
 329 +       "6.0dB", "6.5dB", "7.0dB", "7.5dB", "8.0dB", "8.5dB",
 330 +       "9.0dB", "9.5dB", "10.0dB", "10.5dB", "11.0dB", "11.5dB",
 331 +       "12.0dB", "12.5dB", "13.0dB", "13.5dB", "14.0dB", "14.5dB",
 332 +       "15.0dB", "15.5dB", "16.0dB", "16.5dB", "17.0dB", "17.5dB",
 333 +       "18.0dB", "18.5dB", "19.0dB", "19.5dB", "20.0dB", "20.5dB",
 334 +       "21.0dB", "21.5dB", "22.0dB", "22.5dB", "23.0dB", "23.5dB",
 335 +       "24.0dB", "24.5dB", "25.0dB", "25.5dB", "26.0dB", "26.5dB",
 336 +       "27.0dB", "27.5dB", "28.0dB", "28.5dB", "29.0dB", "29.5dB",
 337 +       "30.0dB", "30.5dB", "31.0dB", "31.5dB", "32.0dB", "32.5dB",
 338 +       "33.0dB", "33.5dB", "34.0dB", "34.5dB", "35.0dB", "35.5dB",
 339 +       "36.0dB", "36.5dB", "37.0dB", "37.5dB", "38.0dB", "38.5dB",
 340 +       "39.0dB", "39.5dB", "40.0dB"};
 341 +
 342 +static const struct soc_enum pcm186x_gain_sel[] = {
 343 +       SOC_VALUE_ENUM_SINGLE(PCM186X_PGA_VAL_CH1_L, 0,
 344 +                             0xff,
 345 +                             ARRAY_SIZE(pcm186x_gain_sel_text),
 346 +                             pcm186x_gain_sel_text,
 347 +                             pcm186x_gain_sel_value),
 348 +       SOC_VALUE_ENUM_SINGLE(PCM186X_PGA_VAL_CH1_R, 0,
 349 +                             0xff,
 350 +                             ARRAY_SIZE(pcm186x_gain_sel_text),
 351 +                             pcm186x_gain_sel_text,
 352 +                             pcm186x_gain_sel_value),
 353 +};
 354 +
 355 +static const struct snd_kcontrol_new pcm1863_snd_controls_card[] = {
 356 +       SOC_ENUM("ADC Left Input", pcm186x_adc_input_channel_sel[0]),
 357 +       SOC_ENUM("ADC Right Input", pcm186x_adc_input_channel_sel[1]),
 358 +       SOC_ENUM("ADC Mic Bias", pcm186x_mic_bias_sel),
 359 +       SOC_ENUM("PGA Gain Left", pcm186x_gain_sel[0]),
 360 +       SOC_ENUM("PGA Gain Right", pcm186x_gain_sel[1]),
 361 +};
 362 +
 363 +static int pcm1863_add_controls(struct snd_soc_component *component)
 364 +{
 365 +       snd_soc_add_component_controls(component,
 366 +                       pcm1863_snd_controls_card,
 367 +                       ARRAY_SIZE(pcm1863_snd_controls_card));
 368 +       return 0;
 369 +}
 370 +
 371 +static void snd_rpi_hifiberry_dacplusadcpro_select_clk(
 372 +                                       struct snd_soc_component *component, int clk_id)
 373 +{
 374 +       switch (clk_id) {
 375 +       case HIFIBERRY_DACPRO_NOCLOCK:
 376 +               snd_soc_component_update_bits(component,
 377 +                               PCM512x_GPIO_CONTROL_1, 0x24, 0x00);
 378 +               break;
 379 +       case HIFIBERRY_DACPRO_CLK44EN:
 380 +               snd_soc_component_update_bits(component,
 381 +                               PCM512x_GPIO_CONTROL_1, 0x24, 0x20);
 382 +               break;
 383 +       case HIFIBERRY_DACPRO_CLK48EN:
 384 +               snd_soc_component_update_bits(component,
 385 +                               PCM512x_GPIO_CONTROL_1, 0x24, 0x04);
 386 +               break;
 387 +       }
 388 +}
 389 +
 390 +static void snd_rpi_hifiberry_dacplusadcpro_clk_gpio(struct snd_soc_component *component)
 391 +{
 392 +       snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x24, 0x24);
 393 +       snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_3, 0x0f, 0x02);
 394 +       snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_6, 0x0f, 0x02);
 395 +}
 396 +
 397 +static bool snd_rpi_hifiberry_dacplusadcpro_is_sclk(struct snd_soc_component *component)
 398 +{
 399 +       unsigned int sck;
 400 +
 401 +       snd_soc_component_read(component, PCM512x_RATE_DET_4, &sck);
 402 +       return (!(sck & 0x40));
 403 +}
 404 +
 405 +static bool snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(
 406 +       struct snd_soc_component *component)
 407 +{
 408 +       msleep(2);
 409 +       return snd_rpi_hifiberry_dacplusadcpro_is_sclk(component);
 410 +}
 411 +
 412 +static bool snd_rpi_hifiberry_dacplusadcpro_is_pro_card(struct snd_soc_component *component)
 413 +{
 414 +       bool isClk44EN, isClk48En, isNoClk;
 415 +
 416 +       snd_rpi_hifiberry_dacplusadcpro_clk_gpio(component);
 417 +
 418 +       snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_CLK44EN);
 419 +       isClk44EN = snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(component);
 420 +
 421 +       snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_NOCLOCK);
 422 +       isNoClk = snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(component);
 423 +
 424 +       snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_CLK48EN);
 425 +       isClk48En = snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(component);
 426 +
 427 +       return (isClk44EN && isClk48En && !isNoClk);
 428 +}
 429 +
 430 +static int snd_rpi_hifiberry_dacplusadcpro_clk_for_rate(int sample_rate)
 431 +{
 432 +       int type;
 433 +
 434 +       switch (sample_rate) {
 435 +       case 11025:
 436 +       case 22050:
 437 +       case 44100:
 438 +       case 88200:
 439 +       case 176400:
 440 +       case 352800:
 441 +               type = HIFIBERRY_DACPRO_CLK44EN;
 442 +               break;
 443 +       default:
 444 +               type = HIFIBERRY_DACPRO_CLK48EN;
 445 +               break;
 446 +       }
 447 +       return type;
 448 +}
 449 +
 450 +static void snd_rpi_hifiberry_dacplusadcpro_set_sclk(struct snd_soc_component *component,
 451 +       int sample_rate)
 452 +{
 453 +       struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
 454 +
 455 +       if (!IS_ERR(pcm512x->sclk)) {
 456 +               int ctype;
 457 +
 458 +               ctype = snd_rpi_hifiberry_dacplusadcpro_clk_for_rate(sample_rate);
 459 +               clk_set_rate(pcm512x->sclk, (ctype == HIFIBERRY_DACPRO_CLK44EN)
 460 +                       ? CLK_44EN_RATE : CLK_48EN_RATE);
 461 +               snd_rpi_hifiberry_dacplusadcpro_select_clk(component, ctype);
 462 +       }
 463 +}
 464 +
 465 +static int snd_rpi_hifiberry_dacplusadcpro_init(struct snd_soc_pcm_runtime *rtd)
 466 +{
 467 +       struct snd_soc_component *dac = rtd->codec_dais[0]->component;
 468 +       struct snd_soc_component *adc = rtd->codec_dais[1]->component;
 469 +       struct snd_soc_dai_driver *adc_driver = rtd->codec_dais[1]->driver;
 470 +       struct pcm512x_priv *priv;
 471 +       int ret;
 472 +
 473 +       if (slave)
 474 +               snd_rpi_hifiberry_is_dacpro = false;
 475 +       else
 476 +               snd_rpi_hifiberry_is_dacpro =
 477 +                               snd_rpi_hifiberry_dacplusadcpro_is_pro_card(dac);
 478 +
 479 +       if (snd_rpi_hifiberry_is_dacpro) {
 480 +               struct snd_soc_dai_link *dai = rtd->dai_link;
 481 +
 482 +               dai->name = "HiFiBerry DAC+ADC Pro";
 483 +               dai->stream_name = "HiFiBerry DAC+ADC Pro HiFi";
 484 +
 485 +               // set DAC DAI configuration
 486 +               ret = snd_soc_dai_set_fmt(rtd->codec_dais[0],
 487 +                               SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 488 +                       | SND_SOC_DAIFMT_CBM_CFM);
 489 +               if (ret < 0)
 490 +                       return ret;
 491 +
 492 +               // set ADC DAI configuration
 493 +               ret = snd_soc_dai_set_fmt(rtd->codec_dais[1],
 494 +                               SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 495 +                       | SND_SOC_DAIFMT_CBS_CFS);
 496 +               if (ret < 0)
 497 +                       return ret;
 498 +
 499 +               // set CPU DAI configuration
 500 +               ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
 501 +                       SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 502 +               if (ret < 0)
 503 +                       return ret;
 504 +
 505 +               snd_soc_component_update_bits(dac, PCM512x_BCLK_LRCLK_CFG, 0x31, 0x11);
 506 +               snd_soc_component_update_bits(dac, PCM512x_MASTER_MODE, 0x03, 0x03);
 507 +               snd_soc_component_update_bits(dac, PCM512x_MASTER_CLKDIV_2, 0x7f, 63);
 508 +       } else {
 509 +               priv = snd_soc_component_get_drvdata(dac);
 510 +               priv->sclk = ERR_PTR(-ENOENT);
 511 +       }
 512 +
 513 +       /* disable 24bit mode as long as I2S module does not have sign extension fixed */
 514 +       adc_driver->capture.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE;
 515 +
 516 +       snd_soc_component_update_bits(dac, PCM512x_GPIO_EN, 0x08, 0x08);
 517 +       snd_soc_component_update_bits(dac, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02);
 518 +       snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
 519 +
 520 +       ret = pcm1863_add_controls(adc);
 521 +       if (ret < 0)
 522 +               dev_warn(rtd->dev, "Failed to add pcm1863 controls: %d\n",
 523 +               ret);
 524 +
 525 +       /* set GPIO2 to output, GPIO3 input */
 526 +       snd_soc_component_write(adc, PCM186X_GPIO3_2_CTRL, 0x00);
 527 +       snd_soc_component_write(adc, PCM186X_GPIO3_2_DIR_CTRL, 0x04);
 528 +       snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x40);
 529 +
 530 +       if (digital_gain_0db_limit) {
 531 +               int ret;
 532 +               struct snd_soc_card *card = rtd->card;
 533 +
 534 +               ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
 535 +               if (ret < 0)
 536 +                       dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
 537 +       }
 538 +
 539 +       return 0;
 540 +}
 541 +
 542 +static int snd_rpi_hifiberry_dacplusadcpro_update_rate_den(
 543 +       struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
 544 +{
 545 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 546 +       struct snd_soc_component *component = rtd->codec_dais[0]->component; /* only use DAC */
 547 +       struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
 548 +       struct snd_ratnum *rats_no_pll;
 549 +       unsigned int num = 0, den = 0;
 550 +       int err;
 551 +
 552 +       rats_no_pll = devm_kzalloc(rtd->dev, sizeof(*rats_no_pll), GFP_KERNEL);
 553 +       if (!rats_no_pll)
 554 +               return -ENOMEM;
 555 +
 556 +       rats_no_pll->num = clk_get_rate(pcm512x->sclk) / 64;
 557 +       rats_no_pll->den_min = 1;
 558 +       rats_no_pll->den_max = 128;
 559 +       rats_no_pll->den_step = 1;
 560 +
 561 +       err = snd_interval_ratnum(hw_param_interval(params,
 562 +               SNDRV_PCM_HW_PARAM_RATE), 1, rats_no_pll, &num, &den);
 563 +       if (err >= 0 && den) {
 564 +               params->rate_num = num;
 565 +               params->rate_den = den;
 566 +       }
 567 +
 568 +       devm_kfree(rtd->dev, rats_no_pll);
 569 +       return 0;
 570 +}
 571 +
 572 +static int snd_rpi_hifiberry_dacplusadcpro_hw_params(
 573 +       struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
 574 +{
 575 +       int ret = 0;
 576 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 577 +       int channels = params_channels(params);
 578 +       int width = 32;
 579 +       struct snd_soc_component *dac = rtd->codec_dais[0]->component;
 580 +
 581 +       if (snd_rpi_hifiberry_is_dacpro) {
 582 +
 583 +               width = snd_pcm_format_physical_width(params_format(params));
 584 +
 585 +               snd_rpi_hifiberry_dacplusadcpro_set_sclk(dac,
 586 +                       params_rate(params));
 587 +
 588 +               ret = snd_rpi_hifiberry_dacplusadcpro_update_rate_den(
 589 +                       substream, params);
 590 +               if (ret)
 591 +                       return ret;
 592 +       }
 593 +
 594 +       ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x03, 0x03,
 595 +               channels, width);
 596 +       if (ret)
 597 +               return ret;
 598 +       ret = snd_soc_dai_set_tdm_slot(rtd->codec_dais[0], 0x03, 0x03,
 599 +               channels, width);
 600 +       if (ret)
 601 +               return ret;
 602 +       ret = snd_soc_dai_set_tdm_slot(rtd->codec_dais[1], 0x03, 0x03,
 603 +               channels, width);
 604 +       return ret;
 605 +}
 606 +
 607 +static int snd_rpi_hifiberry_dacplusadcpro_startup(
 608 +       struct snd_pcm_substream *substream)
 609 +{
 610 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 611 +       struct snd_soc_component *dac = rtd->codec_dais[0]->component;
 612 +       struct snd_soc_component *adc = rtd->codec_dais[1]->component;
 613 +
 614 +       /* switch on respective LED */
 615 +       if (!substream->stream)
 616 +               snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
 617 +       else
 618 +               snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x40);
 619 +       return 0;
 620 +}
 621 +
 622 +static void snd_rpi_hifiberry_dacplusadcpro_shutdown(
 623 +       struct snd_pcm_substream *substream)
 624 +{
 625 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 626 +       struct snd_soc_component *dac = rtd->codec_dais[0]->component;
 627 +       struct snd_soc_component *adc = rtd->codec_dais[1]->component;
 628 +
 629 +       /* switch off respective LED */
 630 +       if (!substream->stream)
 631 +               snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x00);
 632 +       else
 633 +               snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x00);
 634 +}
 635 +
 636 +
 637 +/* machine stream operations */
 638 +static struct snd_soc_ops snd_rpi_hifiberry_dacplusadcpro_ops = {
 639 +       .hw_params = snd_rpi_hifiberry_dacplusadcpro_hw_params,
 640 +       .startup = snd_rpi_hifiberry_dacplusadcpro_startup,
 641 +       .shutdown = snd_rpi_hifiberry_dacplusadcpro_shutdown,
 642 +};
 643 +
 644 +static struct snd_soc_dai_link_component snd_rpi_hifiberry_dacplusadcpro_codecs[] = {
 645 +       {
 646 +               .name           = "pcm512x.1-004d",
 647 +               .dai_name       = "pcm512x-hifi",
 648 +       },
 649 +       {
 650 +               .name           = "pcm186x.1-004a",
 651 +               .dai_name       = "pcm1863-aif",
 652 +       },
 653 +};
 654 +
 655 +static struct snd_soc_dai_link snd_rpi_hifiberry_dacplusadcpro_dai[] = {
 656 +{
 657 +       .name           = "HiFiBerry DAC+ADC PRO",
 658 +       .stream_name    = "HiFiBerry DAC+ADC PRO HiFi",
 659 +       .cpu_dai_name   = "bcm2708-i2s.0",
 660 +       .platform_name  = "bcm2708-i2s.0",
 661 +       .codecs         = snd_rpi_hifiberry_dacplusadcpro_codecs,
 662 +       .num_codecs     = 2,
 663 +       .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 664 +                               SND_SOC_DAIFMT_CBS_CFS,
 665 +       .ops            = &snd_rpi_hifiberry_dacplusadcpro_ops,
 666 +       .init           = snd_rpi_hifiberry_dacplusadcpro_init,
 667 +},
 668 +};
 669 +
 670 +/* audio machine driver */
 671 +static struct snd_soc_card snd_rpi_hifiberry_dacplusadcpro = {
 672 +       .name         = "snd_rpi_hifiberry_dacplusadcpro",
 673 +       .driver_name  = "HifiberryDacpAdcPro",
 674 +       .owner        = THIS_MODULE,
 675 +       .dai_link     = snd_rpi_hifiberry_dacplusadcpro_dai,
 676 +       .num_links    = ARRAY_SIZE(snd_rpi_hifiberry_dacplusadcpro_dai),
 677 +};
 678 +
 679 +static int snd_rpi_hifiberry_dacplusadcpro_probe(struct platform_device *pdev)
 680 +{
 681 +       int ret = 0, i = 0;
 682 +       struct snd_soc_card *card = &snd_rpi_hifiberry_dacplusadcpro;
 683 +
 684 +       snd_rpi_hifiberry_dacplusadcpro.dev = &pdev->dev;
 685 +       if (pdev->dev.of_node) {
 686 +               struct device_node *i2s_node;
 687 +               struct snd_soc_dai_link *dai;
 688 +
 689 +               dai = &snd_rpi_hifiberry_dacplusadcpro_dai[0];
 690 +               i2s_node = of_parse_phandle(pdev->dev.of_node,
 691 +                       "i2s-controller", 0);
 692 +               if (i2s_node) {
 693 +                       for (i = 0; i < card->num_links; i++) {
 694 +                               dai->cpu_dai_name = NULL;
 695 +                               dai->cpu_of_node = i2s_node;
 696 +                               dai->platform_name = NULL;
 697 +                               dai->platform_of_node = i2s_node;
 698 +                       }
 699 +               }
 700 +       }
 701 +       digital_gain_0db_limit = !of_property_read_bool(
 702 +               pdev->dev.of_node, "hifiberry-dacplusadcpro,24db_digital_gain");
 703 +       slave = of_property_read_bool(pdev->dev.of_node,
 704 +                                       "hifiberry-dacplusadcpro,slave");
 705 +       ret = snd_soc_register_card(&snd_rpi_hifiberry_dacplusadcpro);
 706 +       if (ret && ret != -EPROBE_DEFER)
 707 +               dev_err(&pdev->dev,
 708 +                       "snd_soc_register_card() failed: %d\n", ret);
 709 +
 710 +       return ret;
 711 +}
 712 +
 713 +static const struct of_device_id snd_rpi_hifiberry_dacplusadcpro_of_match[] = {
 714 +       { .compatible = "hifiberry,hifiberry-dacplusadcpro", },
 715 +       {},
 716 +};
 717 +
 718 +MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplusadcpro_of_match);
 719 +
 720 +static struct platform_driver snd_rpi_hifiberry_dacplusadcpro_driver = {
 721 +       .driver = {
 722 +               .name   = "snd-rpi-hifiberry-dacplusadcpro",
 723 +               .owner  = THIS_MODULE,
 724 +               .of_match_table = snd_rpi_hifiberry_dacplusadcpro_of_match,
 725 +       },
 726 +       .probe          = snd_rpi_hifiberry_dacplusadcpro_probe,
 727 +};
 728 +
 729 +module_platform_driver(snd_rpi_hifiberry_dacplusadcpro_driver);
 730 +
 731 +MODULE_AUTHOR("Joerg Schambacher <joerg@i2audio.com>");
 732 +MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
 733 +MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+ADC");
 734 +MODULE_LICENSE("GPL v2");