diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0792-sound-Add-the-HiFiBerry-DAC-HD-version.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0792-sound-Add-the-HiFiBerry-DAC-HD-version.patch | 776 |
1 files changed, 776 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0792-sound-Add-the-HiFiBerry-DAC-HD-version.patch b/target/linux/brcm2708/patches-4.19/950-0792-sound-Add-the-HiFiBerry-DAC-HD-version.patch new file mode 100644 index 0000000000..c8b8fd520b --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0792-sound-Add-the-HiFiBerry-DAC-HD-version.patch @@ -0,0 +1,776 @@ +From bb4781b1dac98688a3cf64cf728a64d811ca6add 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/Makefile | 1 + + drivers/clk/clk-hifiberry-dachd.c | 333 ++++++++++++++++++ + sound/soc/bcm/Kconfig | 7 + + sound/soc/bcm/Makefile | 2 + + sound/soc/bcm/hifiberry_dacplushd.c | 235 ++++++++++++ + 13 files changed, 696 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/Makefile ++++ b/drivers/clk/Makefile +@@ -32,6 +32,7 @@ obj-$(CONFIG_COMMON_CLK_ASPEED) += clk- + obj-$(CONFIG_ARCH_HIGHBANK) += clk-highbank.o + obj-$(CONFIG_CLK_HSDK) += clk-hsdk-pll.o + obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += clk-hifiberry-dacpro.o ++obj-$(CONFIG_SND_BCM2708_SOC_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_MOXART) += clk-moxart.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 = CLK_IS_BASIC; ++ 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 +@@ -40,6 +40,13 @@ 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 ++ 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 +--- a/sound/soc/bcm/Makefile ++++ b/sound/soc/bcm/Makefile +@@ -13,6 +13,7 @@ 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 +@@ -40,6 +41,7 @@ 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 +1,235 @@ ++// 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, ++}; ++ ++static struct snd_soc_dai_link snd_rpi_hifiberry_dacplushd_dai[] = { ++{ ++ .name = "HiFiBerry DAC+ HD", ++ .stream_name = "HiFiBerry DAC+ HD HiFi", ++ .cpu_dai_name = "bcm2708-i2s.0", ++ .codec_dai_name = "pcm179x-hifi", ++ .platform_name = "bcm2708-i2s.0", ++ .codec_name = "pcm179x.1-004c", ++ .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, ++}, ++}; ++ ++/* 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->cpu_dai_name = NULL; ++ dai->cpu_of_node = i2s_node; ++ dai->platform_name = NULL; ++ dai->platform_of_node = i2s_node; ++ } 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"); |