brcm2708: update to latest patches from RPi foundation

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 0 insertions, 734 deletions

diff --git a/target/linux/brcm2708/patches-4.19/950-0724-adds-the-Hifiberry-DAC-ADC-PRO-version.patch b/target/linux/brcm2708/patches-4.19/950-0724-adds-the-Hifiberry-DAC-ADC-PRO-version.patch
deleted file mode 100644
index 3e019ccc13..0000000000
--- a/target/linux/brcm2708/patches-4.19/950-0724-adds-the-Hifiberry-DAC-ADC-PRO-version.patch
+++ /dev/null
@@ -1,734 +0,0 @@
-From 9404c34f9d9aef6f1c5a8f8c223865a5adb81518 Mon Sep 17 00:00:00 2001
-From: Joerg Schambacher <joscha@schambacher.com>
-Date: Tue, 23 Jul 2019 16:57:35 +0200
-Subject: [PATCH 724/725] adds the Hifiberry DAC+ADC PRO version
-
-This adds the driver for the DAC+ADC PRO version of the Hifiberry soundcard with software controlled PCM1863 ADC
-Signed-off-by: Joerg Schambacher joerg@i2audio.com
----
- arch/arm/boot/dts/overlays/Makefile           |   1 +
- arch/arm/boot/dts/overlays/README             |  21 +
- .../hifiberry-dacplusadcpro-overlay.dts       |  64 +++
- arch/arm/configs/bcm2709_defconfig            |   1 +
- arch/arm/configs/bcm2711_defconfig            |   1 +
- arch/arm/configs/bcmrpi_defconfig             |   1 +
- sound/soc/bcm/Kconfig                         |   8 +
- sound/soc/bcm/Makefile                        |   2 +
- sound/soc/bcm/hifiberry_dacplusadcpro.c       | 538 ++++++++++++++++++
- 9 files changed, 637 insertions(+)
- create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
- create mode 100644 sound/soc/bcm/hifiberry_dacplusadcpro.c
-
---- a/arch/arm/boot/dts/overlays/Makefile
-+++ b/arch/arm/boot/dts/overlays/Makefile
-@@ -53,6 +53,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
- 	hifiberry-dac.dtbo \
- 	hifiberry-dacplus.dtbo \
- 	hifiberry-dacplusadc.dtbo \
-+	hifiberry-dacplusadcpro.dtbo \
- 	hifiberry-digi.dtbo \
- 	hifiberry-digi-pro.dtbo \
- 	hy28a.dtbo \
---- a/arch/arm/boot/dts/overlays/README
-+++ b/arch/arm/boot/dts/overlays/README
-@@ -883,6 +883,27 @@ Params: 24db_digital_gain       Allow ga
-                                 master for bit clock and frame clock.
- 
- 
-+Name:   hifiberry-dacplusadcpro
-+Info:   Configures the HifiBerry DAC+ADC PRO audio card
-+Load:   dtoverlay=hifiberry-dacplusadcpro,<param>=<val>
-+Params: 24db_digital_gain       Allow gain to be applied via the PCM512x codec
-+                                Digital volume control. Enable with
-+                                "dtoverlay=hifiberry-dacplusadcpro,24db_digital_gain"
-+                                (The default behaviour is that the Digital
-+                                volume control is limited to a maximum of
-+                                0dB. ie. it can attenuate but not provide
-+                                gain. For most users, this will be desired
-+                                as it will prevent clipping. By appending
-+                                the 24dB_digital_gain parameter, the Digital
-+                                volume control will allow up to 24dB of
-+                                gain. If this parameter is enabled, it is the
-+                                responsibility of the user to ensure that
-+                                the Digital volume control is set to a value
-+                                that does not result in clipping/distortion!)
-+        slave                   Force DAC+ADC Pro into slave mode, using Pi as
-+                                master for bit clock and frame clock.
-+
-+
- Name:   hifiberry-digi
- Info:   Configures the HifiBerry Digi and Digi+ audio card
- Load:   dtoverlay=hifiberry-digi
---- /dev/null
-+++ b/arch/arm/boot/dts/overlays/hifiberry-dacplusadcpro-overlay.dts
-@@ -0,0 +1,64 @@
-+// Definitions for HiFiBerry DAC+ADC PRO
-+/dts-v1/;
-+/plugin/;
-+
-+/ {
-+	compatible = "brcm,bcm2708";
-+
-+	fragment@0 {
-+		target-path = "/clocks";
-+		__overlay__ {
-+			dacpro_osc: dacpro_osc {
-+				compatible = "hifiberry,dacpro-clk";
-+				#clock-cells = <0>;
-+			};
-+		};
-+	};
-+
-+	fragment@1 {
-+		target = <&i2s>;
-+		__overlay__ {
-+			status = "okay";
-+		};
-+	};
-+
-+	fragment@2 {
-+		target = <&i2c1>;
-+		__overlay__ {
-+			#address-cells = <1>;
-+			#size-cells = <0>;
-+			status = "okay";
-+
-+			hb_dac: pcm5122@4d {
-+				#sound-dai-cells = <0>;
-+				compatible = "ti,pcm5122";
-+				reg = <0x4d>;
-+				clocks = <&dacpro_osc>;
-+				status = "okay";
-+			};
-+			hb_adc: pcm186x@4a {
-+				#sound-dai-cells = <0>;
-+				compatible = "ti,pcm1863";
-+				reg = <0x4a>;
-+				clocks = <&dacpro_osc>;
-+				status = "okay";
-+			};
-+		};
-+	};
-+
-+	fragment@3 {
-+		target = <&sound>;
-+		hifiberry_dacplusadcpro: __overlay__ {
-+			compatible = "hifiberry,hifiberry-dacplusadcpro";
-+			audio-codec = <&hb_dac &hb_adc>;
-+			i2s-controller = <&i2s>;
-+			status = "okay";
-+		};
-+	};
-+
-+	__overrides__ {
-+		24db_digital_gain =
-+			<&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,24db_digital_gain?";
-+		slave = <&hifiberry_dacplusadcpro>,"hifiberry-dacplusadcpro,slave?";
-+	};
-+};
---- a/arch/arm/configs/bcm2709_defconfig
-+++ b/arch/arm/configs/bcm2709_defconfig
-@@ -961,6 +961,7 @@ CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SO
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC=m
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS=m
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC=m
-+CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO=m
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
- CONFIG_SND_BCM2708_SOC_RPI_CIRRUS=m
---- a/arch/arm/configs/bcm2711_defconfig
-+++ b/arch/arm/configs/bcm2711_defconfig
-@@ -972,6 +972,7 @@ CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SO
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC=m
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS=m
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC=m
-+CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO=m
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
- CONFIG_SND_BCM2708_SOC_RPI_CIRRUS=m
---- a/arch/arm/configs/bcmrpi_defconfig
-+++ b/arch/arm/configs/bcmrpi_defconfig
-@@ -953,6 +953,7 @@ CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SO
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC=m
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS=m
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC=m
-+CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO=m
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
- CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
- CONFIG_SND_BCM2708_SOC_RPI_CIRRUS=m
---- a/sound/soc/bcm/Kconfig
-+++ b/sound/soc/bcm/Kconfig
-@@ -48,6 +48,14 @@ config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
-         help
-          Say Y or M if you want to add support for HifiBerry DAC+ADC.
- 
-+config SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO
-+        tristate "Support for HifiBerry DAC+ADC PRO"
-+        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
-+        select SND_SOC_PCM512x_I2C
-+	select SND_SOC_PCM186X_I2C
-+        help
-+         Say Y or M if you want to add support for HifiBerry DAC+ADC PRO.
-+
- config SND_BCM2708_SOC_HIFIBERRY_DIGI
-         tristate "Support for HifiBerry Digi"
-         depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
---- a/sound/soc/bcm/Makefile
-+++ b/sound/soc/bcm/Makefile
-@@ -14,6 +14,7 @@ snd-soc-googlevoicehat-codec-objs := goo
- # BCM2708 Machine Support
- snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
- snd-soc-hifiberry-dacplusadc-objs := hifiberry_dacplusadc.o
-+snd-soc-hifiberry-dacplusadcpro-objs := hifiberry_dacplusadcpro.o
- snd-soc-justboom-dac-objs := justboom-dac.o
- snd-soc-rpi-cirrus-objs := rpi-cirrus.o
- snd-soc-rpi-proto-objs := rpi-proto.o
-@@ -38,6 +39,7 @@ snd-soc-rpi-wm8804-soundcard-objs := rpi
- obj-$(CONFIG_SND_BCM2708_SOC_GOOGLEVOICEHAT_SOUNDCARD)  += snd-soc-googlevoicehat-codec.o
- obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
- obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC) += snd-soc-hifiberry-dacplusadc.o
-+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO) += snd-soc-hifiberry-dacplusadcpro.o
- obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
- obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o
- obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
---- /dev/null
-+++ b/sound/soc/bcm/hifiberry_dacplusadcpro.c
-@@ -0,0 +1,538 @@
-+/*
-+ * ASoC Driver for HiFiBerry DAC+ / DAC Pro with ADC PRO Version (SW control)
-+ *
-+ * Author:	Daniel Matuschek, Stuart MacLean <stuart@hifiberry.com>
-+ *		Copyright 2014-2015
-+ *		based on code by Florian Meier <florian.meier@koalo.de>
-+ *		ADC added by Joerg Schambacher <joerg@i2audio.com>
-+ *		Copyright 2018-19
-+ *
-+ * This program is free software; you can redistribute it and/or
-+ * modify it under the terms of the GNU General Public License
-+ * version 2 as published by the Free Software Foundation.
-+ *
-+ * This program is distributed in the hope that it will be useful, but
-+ * WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-+ * General Public License for more details.
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/platform_device.h>
-+#include <linux/kernel.h>
-+#include <linux/clk.h>
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/of.h>
-+#include <linux/slab.h>
-+#include <linux/delay.h>
-+
-+#include <sound/core.h>
-+#include <sound/pcm.h>
-+#include <sound/pcm_params.h>
-+#include <sound/soc.h>
-+#include <sound/jack.h>
-+#include <sound/tlv.h>
-+
-+#include "../codecs/pcm512x.h"
-+#include "../codecs/pcm186x.h"
-+
-+#define HIFIBERRY_DACPRO_NOCLOCK 0
-+#define HIFIBERRY_DACPRO_CLK44EN 1
-+#define HIFIBERRY_DACPRO_CLK48EN 2
-+
-+struct pcm512x_priv {
-+	struct regmap *regmap;
-+	struct clk *sclk;
-+};
-+
-+/* Clock rate of CLK44EN attached to GPIO6 pin */
-+#define CLK_44EN_RATE 22579200UL
-+/* Clock rate of CLK48EN attached to GPIO3 pin */
-+#define CLK_48EN_RATE 24576000UL
-+
-+static bool slave;
-+static bool snd_rpi_hifiberry_is_dacpro;
-+static bool digital_gain_0db_limit = true;
-+
-+static const unsigned int pcm186x_adc_input_channel_sel_value[] = {
-+	0x00, 0x01, 0x02, 0x03, 0x10
-+};
-+
-+static const char * const pcm186x_adcl_input_channel_sel_text[] = {
-+	"No Select",
-+	"VINL1[SE]",					/* Default for ADCL */
-+	"VINL2[SE]",
-+	"VINL2[SE] + VINL1[SE]",
-+	"{VIN1P, VIN1M}[DIFF]"
-+};
-+
-+static const char * const pcm186x_adcr_input_channel_sel_text[] = {
-+	"No Select",
-+	"VINR1[SE]",					/* Default for ADCR */
-+	"VINR2[SE]",
-+	"VINR2[SE] + VINR1[SE]",
-+	"{VIN2P, VIN2M}[DIFF]"
-+};
-+
-+static const struct soc_enum pcm186x_adc_input_channel_sel[] = {
-+	SOC_VALUE_ENUM_SINGLE(PCM186X_ADC1_INPUT_SEL_L, 0,
-+			      PCM186X_ADC_INPUT_SEL_MASK,
-+			      ARRAY_SIZE(pcm186x_adcl_input_channel_sel_text),
-+			      pcm186x_adcl_input_channel_sel_text,
-+			      pcm186x_adc_input_channel_sel_value),
-+	SOC_VALUE_ENUM_SINGLE(PCM186X_ADC1_INPUT_SEL_R, 0,
-+			      PCM186X_ADC_INPUT_SEL_MASK,
-+			      ARRAY_SIZE(pcm186x_adcr_input_channel_sel_text),
-+			      pcm186x_adcr_input_channel_sel_text,
-+			      pcm186x_adc_input_channel_sel_value),
-+};
-+
-+static const unsigned int pcm186x_mic_bias_sel_value[] = {
-+	0x00, 0x01, 0x11
-+};
-+
-+static const char * const pcm186x_mic_bias_sel_text[] = {
-+	"Mic Bias off",
-+	"Mic Bias on",
-+	"Mic Bias with Bypass Resistor"
-+};
-+
-+static const struct soc_enum pcm186x_mic_bias_sel[] = {
-+	SOC_VALUE_ENUM_SINGLE(PCM186X_MIC_BIAS_CTRL, 0,
-+			      GENMASK(4, 0),
-+			      ARRAY_SIZE(pcm186x_mic_bias_sel_text),
-+			      pcm186x_mic_bias_sel_text,
-+			      pcm186x_mic_bias_sel_value),
-+};
-+
-+static const unsigned int pcm186x_gain_sel_value[] = {
-+	0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
-+	0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7,
-+	0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff,
-+	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
-+	0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
-+	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
-+	0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
-+	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
-+	0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
-+	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
-+	0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
-+	0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47,
-+	0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
-+	0x50
-+};
-+
-+static const char * const pcm186x_gain_sel_text[] = {
-+	"-12.0dB", "-11.5dB", "-11.0dB", "-10.5dB", "-10.0dB", "-9.5dB",
-+	"-9.0dB", "-8.5dB", "-8.0dB", "-7.5dB", "-7.0dB", "-6.5dB",
-+	"-6.0dB", "-5.5dB", "-5.0dB", "-4.5dB", "-4.0dB", "-3.5dB",
-+	"-3.0dB", "-2.5dB", "-2.0dB", "-1.5dB", "-1.0dB", "-0.5dB",
-+	"0.0dB", "0.5dB", "1.0dB", "1.5dB", "2.0dB", "2.5dB",
-+	"3.0dB", "3.5dB", "4.0dB", "4.5dB", "5.0dB", "5.5dB",
-+	"6.0dB", "6.5dB", "7.0dB", "7.5dB", "8.0dB", "8.5dB",
-+	"9.0dB", "9.5dB", "10.0dB", "10.5dB", "11.0dB", "11.5dB",
-+	"12.0dB", "12.5dB", "13.0dB", "13.5dB", "14.0dB", "14.5dB",
-+	"15.0dB", "15.5dB", "16.0dB", "16.5dB", "17.0dB", "17.5dB",
-+	"18.0dB", "18.5dB", "19.0dB", "19.5dB", "20.0dB", "20.5dB",
-+	"21.0dB", "21.5dB", "22.0dB", "22.5dB", "23.0dB", "23.5dB",
-+	"24.0dB", "24.5dB", "25.0dB", "25.5dB", "26.0dB", "26.5dB",
-+	"27.0dB", "27.5dB", "28.0dB", "28.5dB", "29.0dB", "29.5dB",
-+	"30.0dB", "30.5dB", "31.0dB", "31.5dB", "32.0dB", "32.5dB",
-+	"33.0dB", "33.5dB", "34.0dB", "34.5dB", "35.0dB", "35.5dB",
-+	"36.0dB", "36.5dB", "37.0dB", "37.5dB", "38.0dB", "38.5dB",
-+	"39.0dB", "39.5dB", "40.0dB"};
-+
-+static const struct soc_enum pcm186x_gain_sel[] = {
-+	SOC_VALUE_ENUM_SINGLE(PCM186X_PGA_VAL_CH1_L, 0,
-+			      0xff,
-+			      ARRAY_SIZE(pcm186x_gain_sel_text),
-+			      pcm186x_gain_sel_text,
-+			      pcm186x_gain_sel_value),
-+	SOC_VALUE_ENUM_SINGLE(PCM186X_PGA_VAL_CH1_R, 0,
-+			      0xff,
-+			      ARRAY_SIZE(pcm186x_gain_sel_text),
-+			      pcm186x_gain_sel_text,
-+			      pcm186x_gain_sel_value),
-+};
-+
-+static const struct snd_kcontrol_new pcm1863_snd_controls_card[] = {
-+	SOC_ENUM("ADC Left Input", pcm186x_adc_input_channel_sel[0]),
-+	SOC_ENUM("ADC Right Input", pcm186x_adc_input_channel_sel[1]),
-+	SOC_ENUM("ADC Mic Bias", pcm186x_mic_bias_sel),
-+	SOC_ENUM("PGA Gain Left", pcm186x_gain_sel[0]),
-+	SOC_ENUM("PGA Gain Right", pcm186x_gain_sel[1]),
-+};
-+
-+static int pcm1863_add_controls(struct snd_soc_component *component)
-+{
-+	snd_soc_add_component_controls(component,
-+			pcm1863_snd_controls_card,
-+			ARRAY_SIZE(pcm1863_snd_controls_card));
-+	return 0;
-+}
-+
-+static void snd_rpi_hifiberry_dacplusadcpro_select_clk(
-+					struct snd_soc_component *component, int clk_id)
-+{
-+	switch (clk_id) {
-+	case HIFIBERRY_DACPRO_NOCLOCK:
-+		snd_soc_component_update_bits(component,
-+				PCM512x_GPIO_CONTROL_1, 0x24, 0x00);
-+		break;
-+	case HIFIBERRY_DACPRO_CLK44EN:
-+		snd_soc_component_update_bits(component,
-+				PCM512x_GPIO_CONTROL_1, 0x24, 0x20);
-+		break;
-+	case HIFIBERRY_DACPRO_CLK48EN:
-+		snd_soc_component_update_bits(component,
-+				PCM512x_GPIO_CONTROL_1, 0x24, 0x04);
-+		break;
-+	}
-+}
-+
-+static void snd_rpi_hifiberry_dacplusadcpro_clk_gpio(struct snd_soc_component *component)
-+{
-+	snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x24, 0x24);
-+	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_3, 0x0f, 0x02);
-+	snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_6, 0x0f, 0x02);
-+}
-+
-+static bool snd_rpi_hifiberry_dacplusadcpro_is_sclk(struct snd_soc_component *component)
-+{
-+	unsigned int sck;
-+
-+	snd_soc_component_read(component, PCM512x_RATE_DET_4, &sck);
-+	return (!(sck & 0x40));
-+}
-+
-+static bool snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(
-+	struct snd_soc_component *component)
-+{
-+	msleep(2);
-+	return snd_rpi_hifiberry_dacplusadcpro_is_sclk(component);
-+}
-+
-+static bool snd_rpi_hifiberry_dacplusadcpro_is_pro_card(struct snd_soc_component *component)
-+{
-+	bool isClk44EN, isClk48En, isNoClk;
-+
-+	snd_rpi_hifiberry_dacplusadcpro_clk_gpio(component);
-+
-+	snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_CLK44EN);
-+	isClk44EN = snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(component);
-+
-+	snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_NOCLOCK);
-+	isNoClk = snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(component);
-+
-+	snd_rpi_hifiberry_dacplusadcpro_select_clk(component, HIFIBERRY_DACPRO_CLK48EN);
-+	isClk48En = snd_rpi_hifiberry_dacplusadcpro_is_sclk_sleep(component);
-+
-+	return (isClk44EN && isClk48En && !isNoClk);
-+}
-+
-+static int snd_rpi_hifiberry_dacplusadcpro_clk_for_rate(int sample_rate)
-+{
-+	int type;
-+
-+	switch (sample_rate) {
-+	case 11025:
-+	case 22050:
-+	case 44100:
-+	case 88200:
-+	case 176400:
-+	case 352800:
-+		type = HIFIBERRY_DACPRO_CLK44EN;
-+		break;
-+	default:
-+		type = HIFIBERRY_DACPRO_CLK48EN;
-+		break;
-+	}
-+	return type;
-+}
-+
-+static void snd_rpi_hifiberry_dacplusadcpro_set_sclk(struct snd_soc_component *component,
-+	int sample_rate)
-+{
-+	struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
-+
-+	if (!IS_ERR(pcm512x->sclk)) {
-+		int ctype;
-+
-+		ctype = snd_rpi_hifiberry_dacplusadcpro_clk_for_rate(sample_rate);
-+		clk_set_rate(pcm512x->sclk, (ctype == HIFIBERRY_DACPRO_CLK44EN)
-+			? CLK_44EN_RATE : CLK_48EN_RATE);
-+		snd_rpi_hifiberry_dacplusadcpro_select_clk(component, ctype);
-+	}
-+}
-+
-+static int snd_rpi_hifiberry_dacplusadcpro_init(struct snd_soc_pcm_runtime *rtd)
-+{
-+	struct snd_soc_component *dac = rtd->codec_dais[0]->component;
-+	struct snd_soc_component *adc = rtd->codec_dais[1]->component;
-+	struct snd_soc_dai_driver *adc_driver = rtd->codec_dais[1]->driver;
-+	struct pcm512x_priv *priv;
-+	int ret;
-+
-+	if (slave)
-+		snd_rpi_hifiberry_is_dacpro = false;
-+	else
-+		snd_rpi_hifiberry_is_dacpro =
-+				snd_rpi_hifiberry_dacplusadcpro_is_pro_card(dac);
-+
-+	if (snd_rpi_hifiberry_is_dacpro) {
-+		struct snd_soc_dai_link *dai = rtd->dai_link;
-+
-+		dai->name = "HiFiBerry DAC+ADC Pro";
-+		dai->stream_name = "HiFiBerry DAC+ADC Pro HiFi";
-+
-+		// set DAC DAI configuration
-+		ret = snd_soc_dai_set_fmt(rtd->codec_dais[0],
-+				SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
-+			| SND_SOC_DAIFMT_CBM_CFM);
-+		if (ret < 0)
-+			return ret;
-+
-+		// set ADC DAI configuration
-+		ret = snd_soc_dai_set_fmt(rtd->codec_dais[1],
-+				SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
-+			| SND_SOC_DAIFMT_CBS_CFS);
-+		if (ret < 0)
-+			return ret;
-+
-+		// set CPU DAI configuration
-+		ret = snd_soc_dai_set_fmt(rtd->cpu_dai,
-+			SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
-+		if (ret < 0)
-+			return ret;
-+
-+		snd_soc_component_update_bits(dac, PCM512x_BCLK_LRCLK_CFG, 0x31, 0x11);
-+		snd_soc_component_update_bits(dac, PCM512x_MASTER_MODE, 0x03, 0x03);
-+		snd_soc_component_update_bits(dac, PCM512x_MASTER_CLKDIV_2, 0x7f, 63);
-+	} else {
-+		priv = snd_soc_component_get_drvdata(dac);
-+		priv->sclk = ERR_PTR(-ENOENT);
-+	}
-+
-+	/* disable 24bit mode as long as I2S module does not have sign extension fixed */
-+	adc_driver->capture.formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE;
-+
-+	snd_soc_component_update_bits(dac, PCM512x_GPIO_EN, 0x08, 0x08);
-+	snd_soc_component_update_bits(dac, PCM512x_GPIO_OUTPUT_4, 0x0f, 0x02);
-+	snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
-+
-+	ret = pcm1863_add_controls(adc);
-+	if (ret < 0)
-+		dev_warn(rtd->dev, "Failed to add pcm1863 controls: %d\n",
-+		ret);
-+
-+	/* set GPIO2 to output, GPIO3 input */
-+	snd_soc_component_write(adc, PCM186X_GPIO3_2_CTRL, 0x00);
-+	snd_soc_component_write(adc, PCM186X_GPIO3_2_DIR_CTRL, 0x04);
-+	snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x40);
-+
-+	if (digital_gain_0db_limit) {
-+		int ret;
-+		struct snd_soc_card *card = rtd->card;
-+
-+		ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
-+		if (ret < 0)
-+			dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
-+	}
-+
-+	return 0;
-+}
-+
-+static int snd_rpi_hifiberry_dacplusadcpro_update_rate_den(
-+	struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
-+{
-+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-+	struct snd_soc_component *component = rtd->codec_dais[0]->component; /* only use DAC */
-+	struct pcm512x_priv *pcm512x = snd_soc_component_get_drvdata(component);
-+	struct snd_ratnum *rats_no_pll;
-+	unsigned int num = 0, den = 0;
-+	int err;
-+
-+	rats_no_pll = devm_kzalloc(rtd->dev, sizeof(*rats_no_pll), GFP_KERNEL);
-+	if (!rats_no_pll)
-+		return -ENOMEM;
-+
-+	rats_no_pll->num = clk_get_rate(pcm512x->sclk) / 64;
-+	rats_no_pll->den_min = 1;
-+	rats_no_pll->den_max = 128;
-+	rats_no_pll->den_step = 1;
-+
-+	err = snd_interval_ratnum(hw_param_interval(params,
-+		SNDRV_PCM_HW_PARAM_RATE), 1, rats_no_pll, &num, &den);
-+	if (err >= 0 && den) {
-+		params->rate_num = num;
-+		params->rate_den = den;
-+	}
-+
-+	devm_kfree(rtd->dev, rats_no_pll);
-+	return 0;
-+}
-+
-+static int snd_rpi_hifiberry_dacplusadcpro_hw_params(
-+	struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
-+{
-+	int ret = 0;
-+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-+	int channels = params_channels(params);
-+	int width = 32;
-+	struct snd_soc_component *dac = rtd->codec_dais[0]->component;
-+
-+	if (snd_rpi_hifiberry_is_dacpro) {
-+
-+		width = snd_pcm_format_physical_width(params_format(params));
-+
-+		snd_rpi_hifiberry_dacplusadcpro_set_sclk(dac,
-+			params_rate(params));
-+
-+		ret = snd_rpi_hifiberry_dacplusadcpro_update_rate_den(
-+			substream, params);
-+		if (ret)
-+			return ret;
-+	}
-+
-+	ret = snd_soc_dai_set_tdm_slot(rtd->cpu_dai, 0x03, 0x03,
-+		channels, width);
-+	if (ret)
-+		return ret;
-+	ret = snd_soc_dai_set_tdm_slot(rtd->codec_dais[0], 0x03, 0x03,
-+		channels, width);
-+	if (ret)
-+		return ret;
-+	ret = snd_soc_dai_set_tdm_slot(rtd->codec_dais[1], 0x03, 0x03,
-+		channels, width);
-+	return ret;
-+}
-+
-+static int snd_rpi_hifiberry_dacplusadcpro_startup(
-+	struct snd_pcm_substream *substream)
-+{
-+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-+	struct snd_soc_component *dac = rtd->codec_dais[0]->component;
-+	struct snd_soc_component *adc = rtd->codec_dais[1]->component;
-+
-+	/* switch on respective LED */
-+	if (!substream->stream)
-+		snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x08);
-+	else
-+		snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x40);
-+	return 0;
-+}
-+
-+static void snd_rpi_hifiberry_dacplusadcpro_shutdown(
-+	struct snd_pcm_substream *substream)
-+{
-+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
-+	struct snd_soc_component *dac = rtd->codec_dais[0]->component;
-+	struct snd_soc_component *adc = rtd->codec_dais[1]->component;
-+
-+	/* switch off respective LED */
-+	if (!substream->stream)
-+		snd_soc_component_update_bits(dac, PCM512x_GPIO_CONTROL_1, 0x08, 0x00);
-+	else
-+		snd_soc_component_update_bits(adc, PCM186X_GPIO_IN_OUT, 0x40, 0x00);
-+}
-+
-+
-+/* machine stream operations */
-+static struct snd_soc_ops snd_rpi_hifiberry_dacplusadcpro_ops = {
-+	.hw_params = snd_rpi_hifiberry_dacplusadcpro_hw_params,
-+	.startup = snd_rpi_hifiberry_dacplusadcpro_startup,
-+	.shutdown = snd_rpi_hifiberry_dacplusadcpro_shutdown,
-+};
-+
-+static struct snd_soc_dai_link_component snd_rpi_hifiberry_dacplusadcpro_codecs[] = {
-+	{
-+		.name		= "pcm512x.1-004d",
-+		.dai_name	= "pcm512x-hifi",
-+	},
-+	{
-+		.name		= "pcm186x.1-004a",
-+		.dai_name	= "pcm1863-aif",
-+	},
-+};
-+
-+static struct snd_soc_dai_link snd_rpi_hifiberry_dacplusadcpro_dai[] = {
-+{
-+	.name		= "HiFiBerry DAC+ADC PRO",
-+	.stream_name	= "HiFiBerry DAC+ADC PRO HiFi",
-+	.cpu_dai_name	= "bcm2708-i2s.0",
-+	.platform_name	= "bcm2708-i2s.0",
-+	.codecs		= snd_rpi_hifiberry_dacplusadcpro_codecs,
-+	.num_codecs	= 2,
-+	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
-+				SND_SOC_DAIFMT_CBS_CFS,
-+	.ops		= &snd_rpi_hifiberry_dacplusadcpro_ops,
-+	.init		= snd_rpi_hifiberry_dacplusadcpro_init,
-+},
-+};
-+
-+/* audio machine driver */
-+static struct snd_soc_card snd_rpi_hifiberry_dacplusadcpro = {
-+	.name         = "snd_rpi_hifiberry_dacplusadcpro",
-+	.driver_name  = "HifiberryDacpAdcPro",
-+	.owner        = THIS_MODULE,
-+	.dai_link     = snd_rpi_hifiberry_dacplusadcpro_dai,
-+	.num_links    = ARRAY_SIZE(snd_rpi_hifiberry_dacplusadcpro_dai),
-+};
-+
-+static int snd_rpi_hifiberry_dacplusadcpro_probe(struct platform_device *pdev)
-+{
-+	int ret = 0, i = 0;
-+	struct snd_soc_card *card = &snd_rpi_hifiberry_dacplusadcpro;
-+
-+	snd_rpi_hifiberry_dacplusadcpro.dev = &pdev->dev;
-+	if (pdev->dev.of_node) {
-+		struct device_node *i2s_node;
-+		struct snd_soc_dai_link *dai;
-+
-+		dai = &snd_rpi_hifiberry_dacplusadcpro_dai[0];
-+		i2s_node = of_parse_phandle(pdev->dev.of_node,
-+			"i2s-controller", 0);
-+		if (i2s_node) {
-+			for (i = 0; i < card->num_links; i++) {
-+				dai->cpu_dai_name = NULL;
-+				dai->cpu_of_node = i2s_node;
-+				dai->platform_name = NULL;
-+				dai->platform_of_node = i2s_node;
-+			}
-+		}
-+	}
-+	digital_gain_0db_limit = !of_property_read_bool(
-+		pdev->dev.of_node, "hifiberry-dacplusadcpro,24db_digital_gain");
-+	slave = of_property_read_bool(pdev->dev.of_node,
-+					"hifiberry-dacplusadcpro,slave");
-+	ret = snd_soc_register_card(&snd_rpi_hifiberry_dacplusadcpro);
-+	if (ret && ret != -EPROBE_DEFER)
-+		dev_err(&pdev->dev,
-+			"snd_soc_register_card() failed: %d\n", ret);
-+
-+	return ret;
-+}
-+
-+static const struct of_device_id snd_rpi_hifiberry_dacplusadcpro_of_match[] = {
-+	{ .compatible = "hifiberry,hifiberry-dacplusadcpro", },
-+	{},
-+};
-+
-+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplusadcpro_of_match);
-+
-+static struct platform_driver snd_rpi_hifiberry_dacplusadcpro_driver = {
-+	.driver = {
-+		.name   = "snd-rpi-hifiberry-dacplusadcpro",
-+		.owner  = THIS_MODULE,
-+		.of_match_table = snd_rpi_hifiberry_dacplusadcpro_of_match,
-+	},
-+	.probe          = snd_rpi_hifiberry_dacplusadcpro_probe,
-+};
-+
-+module_platform_driver(snd_rpi_hifiberry_dacplusadcpro_driver);
-+
-+MODULE_AUTHOR("Joerg Schambacher <joerg@i2audio.com>");
-+MODULE_AUTHOR("Daniel Matuschek <daniel@hifiberry.com>");
-+MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+ADC");
-+MODULE_LICENSE("GPL v2");