bcm27xx: remove obsolete kernel 5.4

With the upgrade to kernel 5.10 per default the old version is no
longer required to be in tree.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

1 files changed, 0 insertions, 801 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0388-sound-Add-the-HiFiBerry-DAC-HD-version.patch b/target/linux/bcm27xx/patches-5.4/950-0388-sound-Add-the-HiFiBerry-DAC-HD-version.patch
deleted file mode 100644
index 6b9a6bd29c..0000000000
--- a/target/linux/bcm27xx/patches-5.4/950-0388-sound-Add-the-HiFiBerry-DAC-HD-version.patch
+++ /dev/null
@@ -1,801 +0,0 @@
-From 221b442eb7e5b4ed16151b5501f4b905a9b8455c Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?J=C3=B6rg=20Schambacher?=
- <j-schambacher@users.noreply.github.com>
-Date: Tue, 21 Jan 2020 15:58:39 +0100
-Subject: [PATCH] sound: Add the HiFiBerry DAC+HD version
-
-This adds the driver for the DAC+HD version supporting HiFiBerry's
-PCM179x based DACs. It also adds PLL control for clock generation.
-
-Signed-off-by: Joerg Schambacher <joerg@i2audio.com>
----
- arch/arm/boot/dts/overlays/Makefile           |   1 +
- arch/arm/boot/dts/overlays/README             |   6 +
- .../overlays/hifiberry-dacplushd-overlay.dts  | 106 ++++++
- drivers/clk/Kconfig                           |   3 +
- drivers/clk/Makefile                          |   1 +
- drivers/clk/clk-hifiberry-dachd.c             | 333 ++++++++++++++++++
- sound/soc/bcm/Kconfig                         |   9 +
- sound/soc/bcm/Makefile                        |   2 +
- sound/soc/bcm/hifiberry_dacplushd.c           | 238 +++++++++++++
- 14 files changed, 704 insertions(+)
- create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplushd-overlay.dts
- create mode 100644 drivers/clk/clk-hifiberry-dachd.c
- create mode 100644 sound/soc/bcm/hifiberry_dacplushd.c
-
---- a/arch/arm/boot/dts/overlays/Makefile
-+++ b/arch/arm/boot/dts/overlays/Makefile
-@@ -57,6 +57,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
- 	hifiberry-dacplusadc.dtbo \
- 	hifiberry-dacplusadcpro.dtbo \
- 	hifiberry-dacplusdsp.dtbo \
-+	hifiberry-dacplushd.dtbo \
- 	hifiberry-digi.dtbo \
- 	hifiberry-digi-pro.dtbo \
- 	hy28a.dtbo \
---- a/arch/arm/boot/dts/overlays/README
-+++ b/arch/arm/boot/dts/overlays/README
-@@ -956,6 +956,12 @@ Load:   dtoverlay=hifiberry-dacplusdsp
- Params: <None>
- 
- 
-+Name:   hifiberry-dacplushd
-+Info:   Configures the HifiBerry DAC+ HD audio card
-+Load:   dtoverlay=hifiberry-dacplushd
-+Params: <None>
-+
-+
- 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-dacplushd-overlay.dts
-@@ -0,0 +1,106 @@
-+// Definitions for HiFiBerry DAC+ HD
-+/dts-v1/;
-+/plugin/;
-+
-+#include <dt-bindings/gpio/gpio.h>
-+
-+/ {
-+	compatible = "brcm,bcm2835";
-+
-+	fragment@0 {
-+		target-path = "/clocks";
-+		__overlay__ {
-+			dachd_osc: pll_dachd_osc {
-+				compatible = "hifiberry,dachd-clk";
-+				#clock-cells = <0>;
-+			};
-+		};
-+	};
-+
-+	fragment@1 {
-+		target = <&i2s>;
-+		__overlay__ {
-+			status = "okay";
-+		};
-+	};
-+
-+	fragment@2 {
-+		target = <&i2c1>;
-+		__overlay__ {
-+			#address-cells = <1>;
-+			#size-cells = <0>;
-+			status = "okay";
-+
-+			pcm1792a@4c {
-+				compatible = "ti,pcm1792a";
-+				#sound-dai-cells = <0>;
-+				#clock-cells = <0>;
-+				clocks = <&dachd_osc>;
-+				reg = <0x4c>;
-+				status = "okay";
-+			};
-+			pll: pll@62 {
-+				compatible = "hifiberry,dachd-clk";
-+				#clock-cells = <0>;
-+				reg = <0x62>;
-+				clocks = <&dachd_osc>;
-+				status = "okay";
-+				common_pll_regs = [
-+					02 53 03 00 07 20 0F 00
-+					10 0D 11 1D 12 0D 13 8C
-+					14 8C 15 8C 16 8C 17 8C
-+					18 2A 1C 00 1D 0F 1F 00
-+					2A 00 2C 00 2F 00 30 00
-+					31 00 32 00 34 00 37 00
-+					38 00 39 00 3A 00 3B 01
-+					3E 00 3F 00 40 00 41 00
-+					5A 00 5B 00 95 00 96 00
-+					97 00 98 00 99 00 9A 00
-+					9B 00 A2 00 A3 00 A4 00
-+					B7 92 ];
-+				192k_pll_regs = [
-+					1A 0C 1B 35 1E F0 20 09
-+					21 50 2B 02 2D 10 2E 40
-+					33 01 35 22 36 80 3C 22
-+					3D 46 ];
-+				96k_pll_regs = [
-+					1A 0C 1B 35 1E F0 20 09
-+					21 50 2B 02 2D 10 2E 40
-+					33 01 35 47 36 00 3C 32
-+					3D 46 ];
-+				48k_pll_regs = [
-+					1A 0C 1B 35 1E F0 20 09
-+					21 50 2B 02 2D 10 2E 40
-+					33 01 35 90 36 00 3C 42
-+					3D 46 ];
-+				176k4_pll_regs = [
-+					1A 3D 1B 09 1E F3 20 13
-+					21 75 2B 04 2D 11 2E E0
-+					33 02 35 25 36 C0 3C 22
-+					3D 7A ];
-+				88k2_pll_regs = [
-+					1A 3D 1B 09 1E F3 20 13
-+					21 75 2B 04 2D 11 2E E0
-+					33 01 35 4D 36 80 3C 32
-+					3D 7A ];
-+				44k1_pll_regs = [
-+					1A 3D 1B 09 1E F3 20 13
-+					21 75 2B 04 2D 11 2E E0
-+					33 01 35 9D 36 00 3C 42
-+					3D 7A ];
-+			};
-+		};
-+	};
-+
-+	fragment@3 {
-+		target = <&sound>;
-+		__overlay__ {
-+			compatible = "hifiberry,hifiberry-dacplushd";
-+			i2s-controller = <&i2s>;
-+			clocks = <&pll 0>;
-+			reset-gpio = <&gpio 16 GPIO_ACTIVE_LOW>;
-+			status = "okay";
-+		};
-+	};
-+
-+};
---- a/drivers/clk/Kconfig
-+++ b/drivers/clk/Kconfig
-@@ -70,6 +70,9 @@ config COMMON_CLK_HI655X
- 	  multi-function device has one fixed-rate oscillator, clocked
- 	  at 32KHz.
- 
-+config COMMON_CLK_HIFIBERRY_DACPLUSHD
-+	tristate
-+
- config COMMON_CLK_HIFIBERRY_DACPRO
- 	tristate
- 
---- a/drivers/clk/Makefile
-+++ b/drivers/clk/Makefile
-@@ -36,6 +36,7 @@ obj-$(CONFIG_ARCH_HIGHBANK)		+= clk-high
- obj-$(CONFIG_CLK_HSDK)			+= clk-hsdk-pll.o
- obj-$(CONFIG_COMMON_CLK_LOCHNAGAR)	+= clk-lochnagar.o
- obj-$(CONFIG_COMMON_CLK_HIFIBERRY_DACPRO)	+= clk-hifiberry-dacpro.o
-+obj-$(CONFIG_COMMON_CLK_HIFIBERRY_DACPLUSHD)	+= clk-hifiberry-dachd.o
- obj-$(CONFIG_COMMON_CLK_MAX77686)	+= clk-max77686.o
- obj-$(CONFIG_COMMON_CLK_MAX9485)	+= clk-max9485.o
- obj-$(CONFIG_ARCH_MILBEAUT_M10V)	+= clk-milbeaut.o
---- /dev/null
-+++ b/drivers/clk/clk-hifiberry-dachd.c
-@@ -0,0 +1,333 @@
-+// SPDX-License-Identifier: GPL-2.0
-+/*
-+ * Clock Driver for HiFiBerry DAC+ HD
-+ *
-+ * Author: Joerg Schambacher, i2Audio GmbH for HiFiBerry
-+ *         Copyright 2020
-+ *
-+ * 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/clk-provider.h>
-+#include <linux/clk.h>
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/of.h>
-+#include <linux/slab.h>
-+#include <linux/platform_device.h>
-+#include <linux/i2c.h>
-+#include <linux/regmap.h>
-+
-+#define NO_PLL_RESET			0
-+#define PLL_RESET			1
-+#define HIFIBERRY_PLL_MAX_REGISTER	256
-+#define DEFAULT_RATE			44100
-+
-+static struct reg_default hifiberry_pll_reg_defaults[] = {
-+	{0x02, 0x53}, {0x03, 0x00}, {0x07, 0x20}, {0x0F, 0x00},
-+	{0x10, 0x0D}, {0x11, 0x1D}, {0x12, 0x0D}, {0x13, 0x8C},
-+	{0x14, 0x8C}, {0x15, 0x8C}, {0x16, 0x8C}, {0x17, 0x8C},
-+	{0x18, 0x2A}, {0x1C, 0x00}, {0x1D, 0x0F}, {0x1F, 0x00},
-+	{0x2A, 0x00}, {0x2C, 0x00}, {0x2F, 0x00}, {0x30, 0x00},
-+	{0x31, 0x00}, {0x32, 0x00}, {0x34, 0x00}, {0x37, 0x00},
-+	{0x38, 0x00}, {0x39, 0x00}, {0x3A, 0x00}, {0x3B, 0x01},
-+	{0x3E, 0x00}, {0x3F, 0x00}, {0x40, 0x00}, {0x41, 0x00},
-+	{0x5A, 0x00}, {0x5B, 0x00}, {0x95, 0x00}, {0x96, 0x00},
-+	{0x97, 0x00}, {0x98, 0x00}, {0x99, 0x00}, {0x9A, 0x00},
-+	{0x9B, 0x00}, {0xA2, 0x00}, {0xA3, 0x00}, {0xA4, 0x00},
-+	{0xB7, 0x92},
-+	{0x1A, 0x3D}, {0x1B, 0x09}, {0x1E, 0xF3}, {0x20, 0x13},
-+	{0x21, 0x75}, {0x2B, 0x04}, {0x2D, 0x11}, {0x2E, 0xE0},
-+	{0x3D, 0x7A},
-+	{0x35, 0x9D}, {0x36, 0x00}, {0x3C, 0x42},
-+	{ 177, 0xAC},
-+};
-+static struct reg_default common_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
-+static int num_common_pll_regs;
-+static struct reg_default dedicated_192k_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
-+static int num_dedicated_192k_pll_regs;
-+static struct reg_default dedicated_96k_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
-+static int num_dedicated_96k_pll_regs;
-+static struct reg_default dedicated_48k_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
-+static int num_dedicated_48k_pll_regs;
-+static struct reg_default dedicated_176k4_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
-+static int num_dedicated_176k4_pll_regs;
-+static struct reg_default dedicated_88k2_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
-+static int num_dedicated_88k2_pll_regs;
-+static struct reg_default dedicated_44k1_pll_regs[HIFIBERRY_PLL_MAX_REGISTER];
-+static int num_dedicated_44k1_pll_regs;
-+
-+/**
-+ * struct clk_hifiberry_drvdata - Common struct to the HiFiBerry DAC HD Clk
-+ * @hw: clk_hw for the common clk framework
-+ */
-+struct clk_hifiberry_drvdata {
-+	struct regmap *regmap;
-+	struct clk *clk;
-+	struct clk_hw hw;
-+	unsigned long rate;
-+};
-+
-+#define to_hifiberry_clk(_hw) \
-+	container_of(_hw, struct clk_hifiberry_drvdata, hw)
-+
-+static int clk_hifiberry_dachd_write_pll_regs(struct regmap *regmap,
-+				struct reg_default *regs,
-+				int num, int do_pll_reset)
-+{
-+	int i;
-+	int ret = 0;
-+	char pll_soft_reset[] = { 177, 0xAC, };
-+
-+	for (i = 0; i < num; i++) {
-+		ret |= regmap_write(regmap, regs[i].reg, regs[i].def);
-+		if (ret)
-+			return ret;
-+	}
-+	if (do_pll_reset) {
-+		ret |= regmap_write(regmap, pll_soft_reset[0],
-+						pll_soft_reset[1]);
-+		mdelay(10);
-+	}
-+	return ret;
-+}
-+
-+static unsigned long clk_hifiberry_dachd_recalc_rate(struct clk_hw *hw,
-+	unsigned long parent_rate)
-+{
-+	return to_hifiberry_clk(hw)->rate;
-+}
-+
-+static long clk_hifiberry_dachd_round_rate(struct clk_hw *hw,
-+	unsigned long rate, unsigned long *parent_rate)
-+{
-+	return rate;
-+}
-+
-+static int clk_hifiberry_dachd_set_rate(struct clk_hw *hw,
-+	unsigned long rate, unsigned long parent_rate)
-+{
-+	int ret;
-+	struct clk_hifiberry_drvdata *drvdata = to_hifiberry_clk(hw);
-+
-+	switch (rate) {
-+	case 44100:
-+		ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
-+			dedicated_44k1_pll_regs, num_dedicated_44k1_pll_regs,
-+			PLL_RESET);
-+		break;
-+	case 88200:
-+		ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
-+			dedicated_88k2_pll_regs, num_dedicated_88k2_pll_regs,
-+			PLL_RESET);
-+		break;
-+	case 176400:
-+		ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
-+			dedicated_176k4_pll_regs, num_dedicated_176k4_pll_regs,
-+			PLL_RESET);
-+		break;
-+	case 48000:
-+		ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
-+			dedicated_48k_pll_regs,	num_dedicated_48k_pll_regs,
-+			PLL_RESET);
-+		break;
-+	case 96000:
-+		ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
-+			dedicated_96k_pll_regs,	num_dedicated_96k_pll_regs,
-+			PLL_RESET);
-+		break;
-+	case 192000:
-+		ret = clk_hifiberry_dachd_write_pll_regs(drvdata->regmap,
-+			dedicated_192k_pll_regs, num_dedicated_192k_pll_regs,
-+			PLL_RESET);
-+		break;
-+	default:
-+		ret = -EINVAL;
-+		break;
-+	}
-+	to_hifiberry_clk(hw)->rate = rate;
-+
-+	return ret;
-+}
-+
-+const struct clk_ops clk_hifiberry_dachd_rate_ops = {
-+	.recalc_rate = clk_hifiberry_dachd_recalc_rate,
-+	.round_rate = clk_hifiberry_dachd_round_rate,
-+	.set_rate = clk_hifiberry_dachd_set_rate,
-+};
-+
-+static int clk_hifiberry_get_prop_values(struct device *dev,
-+					char *prop_name,
-+					struct reg_default *regs)
-+{
-+	int ret;
-+	int i;
-+	u8 tmp[2 * HIFIBERRY_PLL_MAX_REGISTER];
-+
-+	ret = of_property_read_variable_u8_array(dev->of_node, prop_name,
-+			tmp, 0, 2 * HIFIBERRY_PLL_MAX_REGISTER);
-+	if (ret < 0)
-+		return ret;
-+	if (ret & 1) {
-+		dev_err(dev,
-+			"%s <%s> -> #%i odd number of bytes for reg/val pairs!",
-+			__func__,
-+			prop_name,
-+			ret);
-+		return -EINVAL;
-+	}
-+	ret /= 2;
-+	for (i = 0; i < ret; i++) {
-+		regs[i].reg = (u32)tmp[2 * i];
-+		regs[i].def = (u32)tmp[2 * i + 1];
-+	}
-+	return ret;
-+}
-+
-+
-+static int clk_hifiberry_dachd_dt_parse(struct device *dev)
-+{
-+	num_common_pll_regs = clk_hifiberry_get_prop_values(dev,
-+				"common_pll_regs", common_pll_regs);
-+	num_dedicated_44k1_pll_regs = clk_hifiberry_get_prop_values(dev,
-+				"44k1_pll_regs", dedicated_44k1_pll_regs);
-+	num_dedicated_88k2_pll_regs = clk_hifiberry_get_prop_values(dev,
-+				"88k2_pll_regs", dedicated_88k2_pll_regs);
-+	num_dedicated_176k4_pll_regs = clk_hifiberry_get_prop_values(dev,
-+				"176k4_pll_regs", dedicated_176k4_pll_regs);
-+	num_dedicated_48k_pll_regs = clk_hifiberry_get_prop_values(dev,
-+				"48k_pll_regs", dedicated_48k_pll_regs);
-+	num_dedicated_96k_pll_regs = clk_hifiberry_get_prop_values(dev,
-+				"96k_pll_regs", dedicated_96k_pll_regs);
-+	num_dedicated_192k_pll_regs = clk_hifiberry_get_prop_values(dev,
-+				"192k_pll_regs", dedicated_192k_pll_regs);
-+	return 0;
-+}
-+
-+
-+static int clk_hifiberry_dachd_remove(struct device *dev)
-+{
-+	of_clk_del_provider(dev->of_node);
-+	return 0;
-+}
-+
-+const struct regmap_config hifiberry_pll_regmap = {
-+	.reg_bits = 8,
-+	.val_bits = 8,
-+	.max_register = HIFIBERRY_PLL_MAX_REGISTER,
-+	.reg_defaults = hifiberry_pll_reg_defaults,
-+	.num_reg_defaults = ARRAY_SIZE(hifiberry_pll_reg_defaults),
-+	.cache_type = REGCACHE_RBTREE,
-+};
-+EXPORT_SYMBOL_GPL(hifiberry_pll_regmap);
-+
-+
-+static int clk_hifiberry_dachd_i2c_probe(struct i2c_client *i2c,
-+			     const struct i2c_device_id *id)
-+{
-+	struct clk_hifiberry_drvdata *hdclk;
-+	int ret = 0;
-+	struct clk_init_data init;
-+	struct device *dev = &i2c->dev;
-+	struct device_node *dev_node = dev->of_node;
-+	struct regmap_config config = hifiberry_pll_regmap;
-+
-+	hdclk = devm_kzalloc(&i2c->dev,
-+			sizeof(struct clk_hifiberry_drvdata), GFP_KERNEL);
-+	if (!hdclk)
-+		return -ENOMEM;
-+
-+	i2c_set_clientdata(i2c, hdclk);
-+
-+	hdclk->regmap = devm_regmap_init_i2c(i2c, &config);
-+
-+	if (IS_ERR(hdclk->regmap))
-+		return PTR_ERR(hdclk->regmap);
-+
-+	/* start PLL to allow detection of DAC */
-+	ret = clk_hifiberry_dachd_write_pll_regs(hdclk->regmap,
-+				hifiberry_pll_reg_defaults,
-+				ARRAY_SIZE(hifiberry_pll_reg_defaults),
-+				PLL_RESET);
-+	if (ret)
-+		return ret;
-+
-+	clk_hifiberry_dachd_dt_parse(dev);
-+
-+	/* restart PLL with configs from DTB */
-+	ret = clk_hifiberry_dachd_write_pll_regs(hdclk->regmap, common_pll_regs,
-+					num_common_pll_regs, PLL_RESET);
-+	if (ret)
-+		return ret;
-+
-+	init.name = "clk-hifiberry-dachd";
-+	init.ops = &clk_hifiberry_dachd_rate_ops;
-+	init.flags = 0;
-+	init.parent_names = NULL;
-+	init.num_parents = 0;
-+
-+	hdclk->hw.init = &init;
-+
-+	hdclk->clk = devm_clk_register(dev, &hdclk->hw);
-+	if (IS_ERR(hdclk->clk)) {
-+		dev_err(dev, "unable to register %s\n",	init.name);
-+		return PTR_ERR(hdclk->clk);
-+	}
-+
-+	ret = of_clk_add_provider(dev_node, of_clk_src_simple_get, hdclk->clk);
-+	if (ret != 0) {
-+		dev_err(dev, "Cannot of_clk_add_provider");
-+		return ret;
-+	}
-+
-+	ret = clk_set_rate(hdclk->hw.clk, DEFAULT_RATE);
-+	if (ret != 0) {
-+		dev_err(dev, "Cannot set rate : %d\n",	ret);
-+		return -EINVAL;
-+	}
-+
-+	return ret;
-+}
-+
-+static int clk_hifiberry_dachd_i2c_remove(struct i2c_client *i2c)
-+{
-+	clk_hifiberry_dachd_remove(&i2c->dev);
-+	return 0;
-+}
-+
-+static const struct i2c_device_id clk_hifiberry_dachd_i2c_id[] = {
-+	{ "dachd-clk", },
-+	{ }
-+};
-+MODULE_DEVICE_TABLE(i2c, clk_hifiberry_dachd_i2c_id);
-+
-+static const struct of_device_id clk_hifiberry_dachd_of_match[] = {
-+	{ .compatible = "hifiberry,dachd-clk", },
-+	{ }
-+};
-+MODULE_DEVICE_TABLE(of, clk_hifiberry_dachd_of_match);
-+
-+static struct i2c_driver clk_hifiberry_dachd_i2c_driver = {
-+	.probe		= clk_hifiberry_dachd_i2c_probe,
-+	.remove		= clk_hifiberry_dachd_i2c_remove,
-+	.id_table	= clk_hifiberry_dachd_i2c_id,
-+	.driver		= {
-+		.name	= "dachd-clk",
-+		.of_match_table = of_match_ptr(clk_hifiberry_dachd_of_match),
-+	},
-+};
-+
-+module_i2c_driver(clk_hifiberry_dachd_i2c_driver);
-+
-+
-+MODULE_DESCRIPTION("HiFiBerry DAC+ HD clock driver");
-+MODULE_AUTHOR("Joerg Schambacher <joerg@i2audio.com>");
-+MODULE_LICENSE("GPL v2");
-+MODULE_ALIAS("platform:clk-hifiberry-dachd");
---- a/sound/soc/bcm/Kconfig
-+++ b/sound/soc/bcm/Kconfig
-@@ -42,6 +42,14 @@ config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
-         help
-          Say Y or M if you want to add support for HifiBerry DAC+.
- 
-+config SND_BCM2708_SOC_HIFIBERRY_DACPLUSHD
-+        tristate "Support for HifiBerry DAC+ HD"
-+        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
-+        select SND_SOC_PCM179X_I2C
-+        select COMMON_CLK_HIFIBERRY_DACPLUSHD
-+        help
-+         Say Y or M if you want to add support for HifiBerry DAC+ HD.
-+
- config SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC
-         tristate "Support for HifiBerry DAC+ADC"
-         depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
-@@ -56,6 +64,7 @@ config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
-         depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
-         select SND_SOC_PCM512x_I2C
- 	select SND_SOC_PCM186X_I2C
-+        select COMMON_CLK_HIFIBERRY_DACPRO
-         help
-          Say Y or M if you want to add support for HifiBerry DAC+ADC PRO.
- 
---- 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-dacplushd-objs := hifiberry_dacplushd.o
- snd-soc-hifiberry-dacplusadc-objs := hifiberry_dacplusadc.o
- snd-soc-hifiberry-dacplusadcpro-objs := hifiberry_dacplusadcpro.o
- snd-soc-hifiberry-dacplusdsp-objs := hifiberry_dacplusdsp.o
-@@ -41,6 +42,7 @@ 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_DACPLUSHD) += snd-soc-hifiberry-dacplushd.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_HIFIBERRY_DACPLUSDSP) += snd-soc-hifiberry-dacplusdsp.o
---- /dev/null
-+++ b/sound/soc/bcm/hifiberry_dacplushd.c
-@@ -0,0 +1,238 @@
-+// SPDX-License-Identifier: GPL-2.0
-+/*
-+ * ASoC Driver for HiFiBerry DAC+ HD
-+ *
-+ * Author:	Joerg Schambacher, i2Audio GmbH for HiFiBerry
-+ *		Copyright 2020
-+ *
-+ * 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/delay.h>
-+#include <linux/module.h>
-+#include <linux/of.h>
-+#include <linux/delay.h>
-+#include <linux/gpio.h>
-+#include <linux/gpio/consumer.h>
-+#include <sound/core.h>
-+#include <sound/pcm.h>
-+#include <sound/pcm_params.h>
-+#include <sound/soc.h>
-+#include <linux/i2c.h>
-+#include <linux/clk.h>
-+
-+#include "../codecs/pcm179x.h"
-+
-+#define DEFAULT_RATE		44100
-+
-+struct brd_drv_data {
-+	struct regmap *regmap;
-+	struct clk *sclk;
-+};
-+
-+static struct brd_drv_data drvdata;
-+static struct gpio_desc *reset_gpio;
-+static const unsigned int hb_dacplushd_rates[] = {
-+	192000, 96000, 48000, 176400, 88200, 44100,
-+};
-+
-+static struct snd_pcm_hw_constraint_list hb_dacplushd_constraints = {
-+	.list = hb_dacplushd_rates,
-+	.count = ARRAY_SIZE(hb_dacplushd_rates),
-+};
-+
-+static int snd_rpi_hb_dacplushd_startup(struct snd_pcm_substream *substream)
-+{
-+	/* constraints for standard sample rates */
-+	snd_pcm_hw_constraint_list(substream->runtime, 0,
-+				SNDRV_PCM_HW_PARAM_RATE,
-+				&hb_dacplushd_constraints);
-+	return 0;
-+}
-+
-+static void snd_rpi_hifiberry_dacplushd_set_sclk(
-+		struct snd_soc_component *component,
-+		int sample_rate)
-+{
-+	if (!IS_ERR(drvdata.sclk))
-+		clk_set_rate(drvdata.sclk, sample_rate);
-+}
-+
-+static int snd_rpi_hifiberry_dacplushd_init(struct snd_soc_pcm_runtime *rtd)
-+{
-+	struct snd_soc_dai_link *dai = rtd->dai_link;
-+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
-+
-+	dai->name = "HiFiBerry DAC+ HD";
-+	dai->stream_name = "HiFiBerry DAC+ HD HiFi";
-+	dai->dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
-+		| SND_SOC_DAIFMT_CBM_CFM;
-+
-+	/* allow only fixed 32 clock counts per channel */
-+	snd_soc_dai_set_bclk_ratio(cpu_dai, 32*2);
-+
-+	return 0;
-+}
-+
-+static int snd_rpi_hifiberry_dacplushd_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;
-+
-+	struct snd_soc_component *component = rtd->codec_dai->component;
-+
-+	snd_rpi_hifiberry_dacplushd_set_sclk(component, params_rate(params));
-+	return ret;
-+}
-+
-+/* machine stream operations */
-+static struct snd_soc_ops snd_rpi_hifiberry_dacplushd_ops = {
-+	.startup = snd_rpi_hb_dacplushd_startup,
-+	.hw_params = snd_rpi_hifiberry_dacplushd_hw_params,
-+};
-+
-+SND_SOC_DAILINK_DEFS(hifi,
-+	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
-+	DAILINK_COMP_ARRAY(COMP_CODEC("pcm179x.1-004c", "pcm179x-hifi")),
-+	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
-+
-+
-+static struct snd_soc_dai_link snd_rpi_hifiberry_dacplushd_dai[] = {
-+{
-+	.name		= "HiFiBerry DAC+ HD",
-+	.stream_name	= "HiFiBerry DAC+ HD HiFi",
-+	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
-+				SND_SOC_DAIFMT_CBS_CFS,
-+	.ops		= &snd_rpi_hifiberry_dacplushd_ops,
-+	.init		= snd_rpi_hifiberry_dacplushd_init,
-+	SND_SOC_DAILINK_REG(hifi),
-+},
-+};
-+
-+/* audio machine driver */
-+static struct snd_soc_card snd_rpi_hifiberry_dacplushd = {
-+	.name         = "snd_rpi_hifiberry_dacplushd",
-+	.driver_name  = "HifiberryDacplusHD",
-+	.owner        = THIS_MODULE,
-+	.dai_link     = snd_rpi_hifiberry_dacplushd_dai,
-+	.num_links    = ARRAY_SIZE(snd_rpi_hifiberry_dacplushd_dai),
-+};
-+
-+static int snd_rpi_hifiberry_dacplushd_probe(struct platform_device *pdev)
-+{
-+	int ret = 0;
-+	static int dac_reset_done;
-+	struct device *dev = &pdev->dev;
-+	struct device_node *dev_node = dev->of_node;
-+
-+	snd_rpi_hifiberry_dacplushd.dev = &pdev->dev;
-+
-+	/* get GPIO and release DAC from RESET */
-+	if (!dac_reset_done) {
-+		reset_gpio = gpiod_get(&pdev->dev, "reset", GPIOD_OUT_LOW);
-+		if (IS_ERR(reset_gpio)) {
-+			dev_err(&pdev->dev, "gpiod_get() failed\n");
-+			return -EINVAL;
-+		}
-+		dac_reset_done = 1;
-+	}
-+	if (!IS_ERR(reset_gpio))
-+		gpiod_set_value(reset_gpio, 0);
-+	msleep(1);
-+	if (!IS_ERR(reset_gpio))
-+		gpiod_set_value(reset_gpio, 1);
-+	msleep(1);
-+	if (!IS_ERR(reset_gpio))
-+		gpiod_set_value(reset_gpio, 0);
-+
-+	if (pdev->dev.of_node) {
-+		struct device_node *i2s_node;
-+		struct snd_soc_dai_link *dai;
-+
-+		dai = &snd_rpi_hifiberry_dacplushd_dai[0];
-+		i2s_node = of_parse_phandle(pdev->dev.of_node,
-+			"i2s-controller", 0);
-+
-+		if (i2s_node) {
-+			dai->cpus->of_node = i2s_node;
-+			dai->platforms->of_node = i2s_node;
-+			dai->cpus->dai_name = NULL;
-+			dai->platforms->name = NULL;
-+		} else {
-+			return -EPROBE_DEFER;
-+		}
-+
-+	}
-+
-+	ret = devm_snd_soc_register_card(&pdev->dev,
-+			&snd_rpi_hifiberry_dacplushd);
-+	if (ret && ret != -EPROBE_DEFER) {
-+		dev_err(&pdev->dev,
-+			"snd_soc_register_card() failed: %d\n", ret);
-+		return ret;
-+	}
-+	if (ret == -EPROBE_DEFER)
-+		return ret;
-+
-+	dev_set_drvdata(dev, &drvdata);
-+	if (dev_node == NULL) {
-+		dev_err(&pdev->dev, "Device tree node not found\n");
-+		return -ENODEV;
-+	}
-+
-+	drvdata.sclk = devm_clk_get(dev, NULL);
-+	if (IS_ERR(drvdata.sclk)) {
-+		drvdata.sclk = ERR_PTR(-ENOENT);
-+		return -ENODEV;
-+	}
-+
-+	clk_set_rate(drvdata.sclk, DEFAULT_RATE);
-+
-+	return ret;
-+}
-+
-+static int snd_rpi_hifiberry_dacplushd_remove(struct platform_device *pdev)
-+{
-+	if (IS_ERR(reset_gpio))
-+		return -EINVAL;
-+
-+	/* put DAC into RESET and release GPIO */
-+	gpiod_set_value(reset_gpio, 0);
-+	gpiod_put(reset_gpio);
-+
-+	return 0;
-+}
-+
-+static const struct of_device_id snd_rpi_hifiberry_dacplushd_of_match[] = {
-+	{ .compatible = "hifiberry,hifiberry-dacplushd", },
-+	{},
-+};
-+
-+MODULE_DEVICE_TABLE(of, snd_rpi_hifiberry_dacplushd_of_match);
-+
-+static struct platform_driver snd_rpi_hifiberry_dacplushd_driver = {
-+	.driver = {
-+		.name   = "snd-rpi-hifiberry-dacplushd",
-+		.owner  = THIS_MODULE,
-+		.of_match_table = snd_rpi_hifiberry_dacplushd_of_match,
-+	},
-+	.probe          = snd_rpi_hifiberry_dacplushd_probe,
-+	.remove		= snd_rpi_hifiberry_dacplushd_remove,
-+};
-+
-+module_platform_driver(snd_rpi_hifiberry_dacplushd_driver);
-+
-+MODULE_AUTHOR("Joerg Schambacher <joerg@i2audio.com>");
-+MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+ HD");
-+MODULE_LICENSE("GPL v2");