target/linux/bcm27xx/patches-4.19/950-0628-adds-the-Hifiberry-DAC-ADC-PRO-version.patch

   1 From bab5f8832c6b2859caea1cb5af1ffcb6276c2f74 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] 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  sound/soc/bcm/Kconfig                         |   8 +
  13  sound/soc/bcm/Makefile                        |   2 +
  14  sound/soc/bcm/hifiberry_dacplusadcpro.c       | 538 ++++++++++++++++++
  15  9 files changed, 637 insertions(+)
  16  create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
  17  create mode 100644 sound/soc/bcm/hifiberry_dacplusadcpro.c
  18
  19 --- a/arch/arm/boot/dts/overlays/Makefile
  20 +++ b/arch/arm/boot/dts/overlays/Makefile
  21 @@ -53,6 +53,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  22         hifiberry-dac.dtbo \
  23         hifiberry-dacplus.dtbo \
  24         hifiberry-dacplusadc.dtbo \
  25 +       hifiberry-dacplusadcpro.dtbo \
  26         hifiberry-digi.dtbo \
  27         hifiberry-digi-pro.dtbo \
  28         hy28a.dtbo \
  29 --- a/arch/arm/boot/dts/overlays/README
  30 +++ b/arch/arm/boot/dts/overlays/README
  31 @@ -883,6 +883,27 @@ Params: 24db_digital_gain       Allow ga
  32                                  master for bit clock and frame clock.
  33
  34
  35 +Name:   hifiberry-dacplusadcpro
  36 +Info:   Configures the HifiBerry DAC+ADC PRO audio card
  37 +Load:   dtoverlay=hifiberry-dacplusadcpro,<param>=<val>
  38 +Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
  39 +                                Digital volume control. Enable with
  40 +                                "dtoverlay=hifiberry-dacplusadcpro,24db_digital_gain"
  41 +                                (The default behaviour is that the Digital
  42 +                                volume control is limited to a maximum of
  43 +                                0dB. ie. it can attenuate but not provide
  44 +                                gain. For most users, this will be desired
  45 +                                as it will prevent clipping. By appending
  46 +                                the 24dB_digital_gain parameter, the Digital
  47 +                                volume control will allow up to 24dB of
  48 +                                gain. If this parameter is enabled, it is the
  49 +                                responsibility of the user to ensure that
  50 +                                the Digital volume control is set to a value
  51 +                                that does not result in clipping/distortion!)
  52 +        slave                   Force DAC+ADC Pro into slave mode, using Pi as
  53 +                                master for bit clock and frame clock.
  54 +
  55 +
  56  Name:   hifiberry-digi
  57  Info:   Configures the HifiBerry Digi and Digi+ audio card
  58  Load:   dtoverlay=hifiberry-digi
  59 --- /dev/null
  60 +++ b/arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
  61 @@ -0,0 +1,64 @@
  62 +// Definitions for HiFiBerry DAC+ADC PRO
  63 +/dts-v1/;
  64 +/plugin/;
  65 +
  66 +/ {
  67 +       compatible = "brcm,bcm2708";
  68 +
  69 +       fragment@0 {
  70 +               target-path = "/clocks";
  71 +               __overlay__ {
  72 +                       dacpro_osc: dacpro_osc {
  73 +                               compatible = "hifiberry,dacpro-clk";
  74 +                               #clock-cells = <0>;
  75 +                       };
  76 +               };
  77 +       };
  78 +
  79 +       fragment@1 {
  80 +               target = <&i2s>;
  81 +               __overlay__ {
  82 +                       status = "okay";
  83 +               };
  84 +       };
  85 +
  86 +       fragment@2 {
  87 +               target = <&i2c1>;
  88 +               __overlay__ {
  89 +                       #address-cells = <1>;
  90 +                       #size-cells = <0>;
  91 +                       status = "okay";
  92 +
  93 +                       hb_dac: pcm5122@4d {
  94 +                               #sound-dai-cells = <0>;
  95 +                               compatible = "ti,pcm5122";
  96 +                               reg = <0x4d>;
  97 +                               clocks = <&dacpro_osc>;
  98 +                               status = "okay";
  99 +                       };
 100 +                       hb_adc: pcm186x@4a {
 101 +                               #sound-dai-cells = <0>;
 102 +                               compatible = "ti,pcm1863";
 103 +                               reg = <0x4a>;
 104 +                               clocks = <&dacpro_osc>;
 105 +                               status = "okay";
 106 +                       };
 107 +               };
 108 +       };
 109 +
 110 +       fragment@3 {
 111 +               target = <&sound>;
 112 +               hifiberry_dacplusadcpro: __overlay__ {
 113 +                       compatible = "hifiberry,hifiberry-dacplusadcpro";
 114 +                       audio-codec = <&hb_dac &hb_adc>;
 115 +                       i2s-controller = <&i2s>;
 116 +                       status = "okay";
 117 +               };
 118 +       };
 119 +
 120 +       __overrides__ {
 121 +               24db_digital_gain =
 122 +                       <&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,24db_digital_gain?";
 123 +               slave = <&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,slave?";
 124 +       };
 125 +};
 126 --- a/sound/soc/bcm/Kconfig
 127 +++ b/sound/soc/bcm/Kconfig
 128 @@ -48,6 +48,14 @@ config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
 129          help
 130           Say Y or M if you want to add support for HifiBerry DAC+ADC.
 131
 132 +config SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO
 133 +        tristate "Support for HifiBerry DAC+ADC PRO"
 134 +        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
 135 +        select SND_SOC_PCM512x_I2C
 136 +       select SND_SOC_PCM186X_I2C
 137 +        help
 138 +         Say Y or M if you want to add support for HifiBerry DAC+ADC PRO.
 139 +
 140  config SND_BCM2708_SOC_HIFIBERRY_DIGI
 141          tristate "Support for HifiBerry Digi"
 142          depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
 143 --- a/sound/soc/bcm/Makefile
 144 +++ b/sound/soc/bcm/Makefile
 145 @@ -14,6 +14,7 @@ snd-soc-googlevoicehat-codec-objs := goo
 146  # BCM2708 Machine Support
 147  snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
 148  snd-soc-hifiberry-dacplusadc-objs := hifiberry_dacplusadc.o
 149 +snd-soc-hifiberry-dacplusadcpro-objs := hifiberry_dacplusadcpro.o
 150  snd-soc-justboom-dac-objs := justboom-dac.o
 151  snd-soc-rpi-cirrus-objs := rpi-cirrus.o
 152  snd-soc-rpi-proto-objs := rpi-proto.o
 153 @@ -38,6 +39,7 @@ snd-soc-rpi-wm8804-soundcard-objs := rpi
 154  obj-$(CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD)  += snd-soc-googlevoicehat-codec.o
 155  obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
 156  obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC) += snd-soc-hifiberry-dacplusadc.o
 157 +obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO) += snd-soc-hifiberry-dacplusadcpro.o
 158  obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
 159  obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o
 160  obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
 161 --- /dev/null
 162 +++ b/sound/soc/bcm/hifiberry_dacplusadcpro.c
 163 @@ -0,0 +1,538 @@
 164 +/*
 165 + * ASoC Driver for HiFiBerry DAC+ / DAC Pro with ADC PRO Version (SW control)
 166 + *
 167 + * Author:     Daniel Matuschek, Stuart MacLean <stuart@hifiberry.com>
 168 + *             Copyright 2014-2015
 169 + *             based on code by Florian Meier <florian.meier@koalo.de>
 170 + *             ADC added by Joerg Schambacher <joerg@i2audio.com>
 171 + *             Copyright 2018-19
 172 + *
 173 + * This program is free software; you can redistribute it and/or
 174 + * modify it under the terms of the GNU General Public License
 175 + * version 2 as published by the Free Software Foundation.
 176 + *
 177 + * This program is distributed in the hope that it will be useful, but
 178 + * WITHOUT ANY WARRANTY; without even the implied warranty of
 179 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 180 + * General Public License for more details.
 181 + */
 182 +
 183 +#include <linux/module.h>
 184 +#include <linux/platform_device.h>
 185 +#include <linux/kernel.h>
 186 +#include <linux/clk.h>
 187 +#include <linux/kernel.h>
 188 +#include <linux/module.h>
 189 +#include <linux/of.h>
 190 +#include <linux/slab.h>
 191 +#include <linux/delay.h>
 192 +
 193 +#include <sound/core.h>
 194 +#include <sound/pcm.h>
 195 +#include <sound/pcm_params.h>
 196 +#include <sound/soc.h>
 197 +#include <sound/jack.h>
 198 +#include <sound/tlv.h>
 199 +
 200 +#include "../codecs/pcm512x.h"
 201 +#include "../codecs/pcm186x.h"
 202 +
 203 +#define HIFIBERRY_DACPRO_NOCLOCK 0
 204 +#define HIFIBERRY_DACPRO_CLK44EN 1
 205 +#define HIFIBERRY_DACPRO_CLK48EN 2
 206 +
 207 +struct pcm512x_priv {
 208 +       struct regmap *regmap;
 209 +       struct clk *sclk;
 210 +};
 211 +
 212 +/* Clock rate of CLK44EN attached to GPIO6 pin */
 213 +#define CLK_44EN_RATE 22579200UL
 214 +/* Clock rate of CLK48EN attached to GPIO3 pin */
 215 +#define CLK_48EN_RATE 24576000UL
 216 +
 217 +static bool slave;
 218 +static bool snd_rpi_hifiberry_is_dacpro;
 219 +static bool digital_gain_0db_limit = true;
 220 +
 221 +static const unsigned int pcm186x_adc_input_channel_sel_value[] = {
 222 +       0x00, 0x01, 0x02, 0x03, 0x10
 223 +};
 224 +
 225 +static const char * const pcm186x_adcl_input_channel_sel_text[] = {
 226 +       "No Select",
 227 +       "VINL1[SE]",                                    /* Default for ADCL */
 228 +       "VINL2[SE]",
 229 +       "VINL2[SE] + VINL1[SE]",
 230 +       "{VIN1P, VIN1M}[DIFF]"
 231 +};
 232 +
 233 +static const char * const pcm186x_adcr_input_channel_sel_text[] = {
 234 +       "No Select",
 235 +       "VINR1[SE]",                                    /* Default for ADCR */
 236 +       "VINR2[SE]",
 237 +       "VINR2[SE] + VINR1[SE]",
 238 +       "{VIN2P, VIN2M}[DIFF]"
 239 +};
 240 +
 241 +static const struct soc_enum pcm186x_adc_input_channel_sel[] = {
 242 +       SOC_VALUE_ENUM_SINGLE(PCM186X_ADC1_INPUT_SEL_L, 0,
 243 +                             PCM186X_ADC_INPUT_SEL_MASK,
 244 +                             ARRAY_SIZE(pcm186x_adcl_input_channel_sel_text),
 245 +                             pcm186x_adcl_input_channel_sel_text,
 246 +                             pcm186x_adc_input_channel_sel_value),
 247 +       SOC_VALUE_ENUM_SINGLE(PCM186X_ADC1_INPUT_SEL_R, 0,
 248 +                             PCM186X_ADC_INPUT_SEL_MASK,
 249 +                             ARRAY_SIZE(pcm186x_adcr_input_channel_sel_text),
 250 +                             pcm186x_adcr_input_channel_sel_text,
 251 +                             pcm186x_adc_input_channel_sel_value),
 252 +};
 253 +
 254 +static const unsigned int pcm186x_mic_bias_sel_value[] = {
 255 +       0x00, 0x01, 0x11
 256 +};
 257 +
 258 +static const char * const pcm186x_mic_bias_sel_text[] = {
 259 +       "Mic Bias off",
 260 +       "Mic Bias on",
 261 +       "Mic Bias with Bypass Resistor"
 262 +};
 263 +
 264 +static const struct soc_enum pcm186x_mic_bias_sel[] = {
 265 +       SOC_VALUE_ENUM_SINGLE(PCM186X_MIC_BIAS_CTRL, 0,
 266 +                             GENMASK(4, 0),
 267 +                             ARRAY_SIZE(pcm186x_mic_bias_sel_text),
 268 +                             pcm186x_mic_bias_sel_text,
 269 +                             pcm186x_mic_bias_sel_value),
 270 +};
 271 +
 272 +static const unsigned int pcm186x_gain_sel_value[] = {
 273 +       0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
 274 +       0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
 275 +       0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
 276 +       0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
 277 +       0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
 278 +       0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
 279 +       0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
 280 +       0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
 281 +       0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
 282 +       0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
 283 +       0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
 284 +       0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
 285 +       0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
 286 +       0x50
 287 +};
 288 +
 289 +static const char * const pcm186x_gain_sel_text[] = {
 290 +       "-12.0dB", "-11.5dB", "-11.0dB", "-10.5dB", "-10.0dB", "-9.5dB",
 291 +       "-9.0dB", "-8.5dB", "-8.0dB", "-7.5dB", "-7.0dB", "-6.5dB",
 292 +       "-6.0dB", "-5.5dB", "-5.0dB", "-4.5dB", "-4.0dB", "-3.5dB",
 293 +       "-3.0dB", "-2.5dB", "-2.0dB", "-1.5dB", "-1.0dB", "-0.5dB",
 294 +       "0.0dB", "0.5dB", "1.0dB", "1.5dB", "2.0dB", "2.5dB",
 295 +       "3.0dB", "3.5dB", "4.0dB", "4.5dB", "5.0dB", "5.5dB",
 296 +       "6.0dB", "6.5dB", "7.0dB", "7.5dB", "8.0dB", "8.5dB",
 297 +       "9.0dB", "9.5dB", "10.0dB", "10.5dB", "11.0dB", "11.5dB",
 298 +       "12.0dB", "12.5dB", "13.0dB", "13.5dB", "14.0dB", "14.5dB",
 299 +       "15.0dB", "15.5dB", "16.0dB", "16.5dB", "17.0dB", "17.5dB",
 300 +       "18.0dB", "18.5dB", "19.0dB", "19.5dB", "20.0dB", "20.5dB",
 301 +       "21.0dB", "21.5dB", "22.0dB", "22.5dB", "23.0dB", "23.5dB",
 302 +       "24.0dB", "24.5dB", "25.0dB", "25.5dB", "26.0dB", "26.5dB",
 303 +       "27.0dB", "27.5dB", "28.0dB", "28.5dB", "29.0dB", "29.5dB",
 304 +       "30.0dB", "30.5dB", "31.0dB", "31.5dB", "32.0dB", "32.5dB",
 305 +       "33.0dB", "33.5dB", "34.0dB", "34.5dB", "35.0dB", "35.5dB",
 306 +       "36.0dB", "36.5dB", "37.0dB", "37.5dB", "38.0dB", "38.5dB",
 307 +       "39.0dB", "39.5dB", "40.0dB"};
 308 +
 309 +static const struct soc_enum pcm186x_gain_sel[] = {
 310 +       SOC_VALUE_ENUM_SINGLE(PCM186X_PGA_VAL_CH1_L, 0,
 311 +                             0xff,
 312 +                             ARRAY_SIZE(pcm186x_gain_sel_text),
 313 +                             pcm186x_gain_sel_text,
 314 +                             pcm186x_gain_sel_value),
 315 +       SOC_VALUE_ENUM_SINGLE(PCM186X_PGA_VAL_CH1_R, 0,
 316 +                             0xff,
 317 +                             ARRAY_SIZE(pcm186x_gain_sel_text),
 318 +                             pcm186x_gain_sel_text,
 319 +                             pcm186x_gain_sel_value),
 320 +};
 321 +
 322 +static const struct snd_kcontrol_new pcm1863_snd_controls_card[] = {
 323 +       SOC_ENUM("ADC Left Input", pcm186x_adc_input_channel_sel[0]),
 324 +       SOC_ENUM("ADC Right Input", pcm186x_adc_input_channel_sel[1]),
 325 +       SOC_ENUM("ADC Mic Bias", pcm186x_mic_bias_sel),
 326 +       SOC_ENUM("PGA Gain Left", pcm186x_gain_sel[0]),
 327 +       SOC_ENUM("PGA Gain Right", pcm186x_gain_sel[1]),
 328 +};
 329 +
 330 +static int pcm1863_add_controls(struct snd_soc_component *component)
 331 +{
 332 +       snd_soc_add_component_controls(component,
 333 +                       pcm1863_snd_controls_card,
 334 +                       ARRAY_SIZE(pcm1863_snd_controls_card));
 335 +       return 0;
 336 +}
 337 +
 338 +static void snd_rpi_hifiberry_dacplusadcpro_select_clk(
 339 +                                       struct snd_soc_component *component, int clk_id)
 340 +{
 341 +       switch (clk_id) {
 342 +       case HIFIBERRY_DACPRO_NOCLOCK:
 343 +               snd_soc_component_update_bits(component,
 344 +                               PCM512x_GPIO_CONTROL_1, 0x24, 0x00);
 345 +               break;
 346 +       case HIFIBERRY_DACPRO_CLK44EN:
 347 +               snd_soc_component_update_bits(component,
 348 +                               PCM512x_GPIO_CONTROL_1, 0x24, 0x20);
 349 +               break;
 350 +       case HIFIBERRY_DACPRO_CLK48EN:
 351 +               snd_soc_component_update_bits(component,
 352 +                               PCM512x_GPIO_CONTROL_1, 0x24, 0x04);
 353 +               break;
 354 +       }
 355 +}
 356 +
 357 +static void snd_rpi_hifiberry_dacplusadcpro_clk_gpio(struct snd_soc_component *component)
 358 +{
 359 +       snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x24, 0x24);
 360 +       snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_3, 0x0f, 0x02);
 361 +       snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_6, 0x0f, 0x02);
 362 +}
 363 +
 364 +static bool snd_rpi_hifiberry_dacplusadcpro_is_sclk(struct snd_soc_component *component)
 365 +{
 366 +       unsigned int sck;
 367 +
 368 +       snd_soc_component_read(component, PCM512x_RATE_DET_4, &sck);
 369 +       return (!(sck & 0x40));
 370 +}
 371 +
 372 +static bool snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(
 373 +       struct snd_soc_component *component)
 374 +{
 375 +       msleep(2);
 376 +       return snd_rpi_hifiberry_dacplusadcpro_is_sclk(component);
 377 +}
 378 +
 379 +static bool snd_rpi_hifiberry_dacplusadcpro_is_pro_card(struct snd_soc_component *component)
 380 +{
 381 +       bool isClk44EN, isClk48En, isNoClk;
 382 +
 383 +       snd_rpi_hifiberry_dacplusadcpro_clk_gpio(component);
 384 +
 385 +       snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_CLK44EN);
 386 +       isClk44EN = snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(component);
 387 +
 388 +       snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_NOCLOCK);
 389 +       isNoClk = snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(component);
 390 +
 391 +       snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_CLK48EN);
 392 +       isClk48En = snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(component);
 393 +
 394 +       return (isClk44EN && isClk48En && !isNoClk);
 395 +}
 396 +
 397 +static int snd_rpi_hifiberry_dacplusadcpro_clk_for_rate(int sample_rate)
 398 +{
 399 +       int type;
 400 +
 401 +       switch (sample_rate) {
 402 +       case 11025:
 403 +       case 22050:
 404 +       case 44100:
 405 +       case 88200:
 406 +       case 176400:
 407 +       case 352800:
 408 +               type = HIFIBERRY_DACPRO_CLK44EN;
 409 +               break;
 410 +       default:
 411 +               type = HIFIBERRY_DACPRO_CLK48EN;
 412 +               break;
 413 +       }
 414 +       return type;
 415 +}
 416 +
 417 +static void snd_rpi_hifiberry_dacplusadcpro_set_sclk(struct snd_soc_component *component,
 418 +       int sample_rate)
 419 +{
 420 +       struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
 421 +
 422 +       if (!IS_ERR(pcm512x->sclk)) {
 423 +               int ctype;
 424 +
 425 +               ctype = snd_rpi_hifiberry_dacplusadcpro_clk_for_rate(sample_rate);
 426 +               clk_set_rate(pcm512x->sclk, (ctype == HIFIBERRY_DACPRO_CLK44EN)
 427 +                       ? CLK_44EN_RATE : CLK_48EN_RATE);
 428 +               snd_rpi_hifiberry_dacplusadcpro_select_clk(component, ctype);
 429 +       }
 430 +}
 431 +
 432 +static int snd_rpi_hifiberry_dacplusadcpro_init(struct snd_soc_pcm_runtime *rtd)
 433 +{
 434 +       struct snd_soc_component *dac = rtd->codec_dais[0]->component;
 435 +       struct snd_soc_component *adc = rtd->codec_dais[1]->component;
 436 +       struct snd_soc_dai_driver *adc_driver = rtd->codec_dais[1]->driver;
 437 +       struct pcm512x_priv *priv;
 438 +       int ret;
 439 +
 440 +       if (slave)
 441 +               snd_rpi_hifiberry_is_dacpro = false;
 442 +       else
 443 +               snd_rpi_hifiberry_is_dacpro =
 444 +                               snd_rpi_hifiberry_dacplusadcpro_is_pro_card(dac);
 445 +
 446 +       if (snd_rpi_hifiberry_is_dacpro) {
 447 +               struct snd_soc_dai_link *dai = rtd->dai_link;
 448 +
 449 +               dai->name = "HiFiBerry DAC+ADC Pro";
 450 +               dai->stream_name = "HiFiBerry DAC+ADC Pro HiFi";
 451 +
 452 +               // set DAC DAI configuration
 453 +               ret = snd_soc_dai_set_fmt(rtd->codec_dais[0],
 454 +                               SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 455 +                       | SND_SOC_DAIFMT_CBM_CFM);
 456 +               if (ret < 0)
 457 +                       return ret;
 458 +
 459 +               // set ADC DAI configuration
 460 +               ret = snd_soc_dai_set_fmt(rtd->codec_dais[1],
 461 +                               SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
 462 +                       | SND_SOC_DAIFMT_CBS_CFS);
 463 +               if (ret < 0)
 464 +                       return ret;
 465 +
 466 +               // set CPU DAI configuration
 467 +               ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
 468 +                       SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 469 +               if (ret < 0)
 470 +                       return ret;
 471 +
 472 +               snd_soc_component_update_bits(dac, PCM512x_BCLK_LRCLK_CFG, 0x31, 0x11);
 473 +               snd_soc_component_update_bits(dac, PCM512x_MASTER_MODE, 0x03, 0x03);
 474 +               snd_soc_component_update_bits(dac, PCM512x_MASTER_CLKDIV_2, 0x7f, 63);
 475 +       } else {
 476 +               priv = snd_soc_component_get_drvdata(dac);
 477 +               priv->sclk = ERR_PTR(-ENOENT);
 478 +       }
 479 +
 480 +       /* disable 24bit mode as long as I2S module does not have sign extension fixed */
 481 +       adc_driver->capture.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE;
 482 +
 483 +       snd_soc_component_update_bits(dac, PCM512x_GPIO_EN, 0x08, 0x08);
 484 +       snd_soc_component_update_bits(dac, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02);
 485 +       snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
 486 +
 487 +       ret = pcm1863_add_controls(adc);
 488 +       if (ret < 0)
 489 +               dev_warn(rtd->dev, "Failed to add pcm1863 controls: %d\n",
 490 +               ret);
 491 +
 492 +       /* set GPIO2 to output, GPIO3 input */
 493 +       snd_soc_component_write(adc, PCM186X_GPIO3_2_CTRL, 0x00);
 494 +       snd_soc_component_write(adc, PCM186X_GPIO3_2_DIR_CTRL, 0x04);
 495 +       snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x40);
 496 +
 497 +       if (digital_gain_0db_limit) {
 498 +               int ret;
 499 +               struct snd_soc_card *card = rtd->card;
 500 +
 501 +               ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
 502 +               if (ret < 0)
 503 +                       dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
 504 +       }
 505 +
 506 +       return 0;
 507 +}
 508 +
 509 +static int snd_rpi_hifiberry_dacplusadcpro_update_rate_den(
 510 +       struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
 511 +{
 512 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 513 +       struct snd_soc_component *component = rtd->codec_dais[0]->component; /* only use DAC */
 514 +       struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
 515 +       struct snd_ratnum *rats_no_pll;
 516 +       unsigned int num = 0, den = 0;
 517 +       int err;
 518 +
 519 +       rats_no_pll = devm_kzalloc(rtd->dev, sizeof(*rats_no_pll), GFP_KERNEL);
 520 +       if (!rats_no_pll)
 521 +               return -ENOMEM;
 522 +
 523 +       rats_no_pll->num = clk_get_rate(pcm512x->sclk) / 64;
 524 +       rats_no_pll->den_min = 1;
 525 +       rats_no_pll->den_max = 128;
 526 +       rats_no_pll->den_step = 1;
 527 +
 528 +       err = snd_interval_ratnum(hw_param_interval(params,
 529 +               SNDRV_PCM_HW_PARAM_RATE), 1, rats_no_pll, &num, &den);
 530 +       if (err >= 0 && den) {
 531 +               params->rate_num = num;
 532 +               params->rate_den = den;
 533 +       }
 534 +
 535 +       devm_kfree(rtd->dev, rats_no_pll);
 536 +       return 0;
 537 +}
 538 +
 539 +static int snd_rpi_hifiberry_dacplusadcpro_hw_params(
 540 +       struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
 541 +{
 542 +       int ret = 0;
 543 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 544 +       int channels = params_channels(params);
 545 +       int width = 32;
 546 +       struct snd_soc_component *dac = rtd->codec_dais[0]->component;
 547 +
 548 +       if (snd_rpi_hifiberry_is_dacpro) {
 549 +
 550 +               width = snd_pcm_format_physical_width(params_format(params));
 551 +
 552 +               snd_rpi_hifiberry_dacplusadcpro_set_sclk(dac,
 553 +                       params_rate(params));
 554 +
 555 +               ret = snd_rpi_hifiberry_dacplusadcpro_update_rate_den(
 556 +                       substream, params);
 557 +               if (ret)
 558 +                       return ret;
 559 +       }
 560 +
 561 +       ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x03, 0x03,
 562 +               channels, width);
 563 +       if (ret)
 564 +               return ret;
 565 +       ret = snd_soc_dai_set_tdm_slot(rtd->codec_dais[0], 0x03, 0x03,
 566 +               channels, width);
 567 +       if (ret)
 568 +               return ret;
 569 +       ret = snd_soc_dai_set_tdm_slot(rtd->codec_dais[1], 0x03, 0x03,
 570 +               channels, width);
 571 +       return ret;
 572 +}
 573 +
 574 +static int snd_rpi_hifiberry_dacplusadcpro_startup(
 575 +       struct snd_pcm_substream *substream)
 576 +{
 577 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 578 +       struct snd_soc_component *dac = rtd->codec_dais[0]->component;
 579 +       struct snd_soc_component *adc = rtd->codec_dais[1]->component;
 580 +
 581 +       /* switch on respective LED */
 582 +       if (!substream->stream)
 583 +               snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
 584 +       else
 585 +               snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x40);
 586 +       return 0;
 587 +}
 588 +
 589 +static void snd_rpi_hifiberry_dacplusadcpro_shutdown(
 590 +       struct snd_pcm_substream *substream)
 591 +{
 592 +       struct snd_soc_pcm_runtime *rtd = substream->private_data;
 593 +       struct snd_soc_component *dac = rtd->codec_dais[0]->component;
 594 +       struct snd_soc_component *adc = rtd->codec_dais[1]->component;
 595 +
 596 +       /* switch off respective LED */
 597 +       if (!substream->stream)
 598 +               snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x00);
 599 +       else
 600 +               snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x00);
 601 +}
 602 +
 603 +
 604 +/* machine stream operations */
 605 +static struct snd_soc_ops snd_rpi_hifiberry_dacplusadcpro_ops = {
 606 +       .hw_params = snd_rpi_hifiberry_dacplusadcpro_hw_params,
 607 +       .startup = snd_rpi_hifiberry_dacplusadcpro_startup,
 608 +       .shutdown = snd_rpi_hifiberry_dacplusadcpro_shutdown,
 609 +};
 610 +
 611 +static struct snd_soc_dai_link_component snd_rpi_hifiberry_dacplusadcpro_codecs[] = {
 612 +       {
 613 +               .name           = "pcm512x.1-004d",
 614 +               .dai_name       = "pcm512x-hifi",
 615 +       },
 616 +       {
 617 +               .name           = "pcm186x.1-004a",
 618 +               .dai_name       = "pcm1863-aif",
 619 +       },
 620 +};
 621 +
 622 +static struct snd_soc_dai_link snd_rpi_hifiberry_dacplusadcpro_dai[] = {
 623 +{
 624 +       .name           = "HiFiBerry DAC+ADC PRO",
 625 +       .stream_name    = "HiFiBerry DAC+ADC PRO HiFi",
 626 +       .cpu_dai_name   = "bcm2708-i2s.0",
 627 +       .platform_name  = "bcm2708-i2s.0",
 628 +       .codecs         = snd_rpi_hifiberry_dacplusadcpro_codecs,
 629 +       .num_codecs     = 2,
 630 +       .dai_fmt        = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 631 +                               SND_SOC_DAIFMT_CBS_CFS,
 632 +       .ops            = &snd_rpi_hifiberry_dacplusadcpro_ops,
 633 +       .init           = snd_rpi_hifiberry_dacplusadcpro_init,
 634 +},
 635 +};
 636 +
 637 +/* audio machine driver */
 638 +static struct snd_soc_card snd_rpi_hifiberry_dacplusadcpro = {
 639 +       .name         = "snd_rpi_hifiberry_dacplusadcpro",
 640 +       .driver_name  = "HifiberryDacpAdcPro",
 641 +       .owner        = THIS_MODULE,
 642 +       .dai_link     = snd_rpi_hifiberry_dacplusadcpro_dai,
 643 +       .num_links    = ARRAY_SIZE(snd_rpi_hifiberry_dacplusadcpro_dai),
 644 +};
 645 +
 646 +static int snd_rpi_hifiberry_dacplusadcpro_probe(struct platform_device *pdev)
 647 +{
 648 +       int ret = 0, i = 0;
 649 +       struct snd_soc_card *card = &snd_rpi_hifiberry_dacplusadcpro;
 650 +
 651 +       snd_rpi_hifiberry_dacplusadcpro.dev = &pdev->dev;
 652 +       if (pdev->dev.of_node) {
 653 +               struct device_node *i2s_node;
 654 +               struct snd_soc_dai_link *dai;
 655 +
 656 +               dai = &snd_rpi_hifiberry_dacplusadcpro_dai[0];
 657 +               i2s_node = of_parse_phandle(pdev->dev.of_node,
 658 +                       "i2s-controller", 0);
 659 +               if (i2s_node) {
 660 +                       for (i = 0; i < card->num_links; i++) {
 661 +                               dai->cpu_dai_name = NULL;
 662 +                               dai->cpu_of_node = i2s_node;
 663 +                               dai->platform_name = NULL;
 664 +                               dai->platform_of_node = i2s_node;
 665 +                       }
 666 +               }
 667 +       }
 668 +       digital_gain_0db_limit = !of_property_read_bool(
 669 +               pdev->dev.of_node, "hifiberry-dacplusadcpro,24db_digital_gain");
 670 +       slave = of_property_read_bool(pdev->dev.of_node,
 671 +                                       "hifiberry-dacplusadcpro,slave");
 672 +       ret = snd_soc_register_card(&snd_rpi_hifiberry_dacplusadcpro);
 673 +       if (ret && ret != -EPROBE_DEFER)
 674 +               dev_err(&pdev->dev,
 675 +                       "snd_soc_register_card() failed: %d\n", ret);
 676 +
 677 +       return ret;
 678 +}
 679 +
 680 +static const struct of_device_id snd_rpi_hifiberry_dacplusadcpro_of_match[] = {
 681 +       { .compatible = "hifiberry,hifiberry-dacplusadcpro", },
 682 +       {},
 683 +};
 684 +
 685 +MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplusadcpro_of_match);
 686 +
 687 +static struct platform_driver snd_rpi_hifiberry_dacplusadcpro_driver = {
 688 +       .driver = {
 689 +               .name   = "snd-rpi-hifiberry-dacplusadcpro",
 690 +               .owner  = THIS_MODULE,
 691 +               .of_match_table = snd_rpi_hifiberry_dacplusadcpro_of_match,
 692 +       },
 693 +       .probe          = snd_rpi_hifiberry_dacplusadcpro_probe,
 694 +};
 695 +
 696 +module_platform_driver(snd_rpi_hifiberry_dacplusadcpro_driver);
 697 +
 698 +MODULE_AUTHOR("Joerg Schambacher <joerg@i2audio.com>");
 699 +MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
 700 +MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+ADC");
 701 +MODULE_LICENSE("GPL v2");