This chip is used on coral and we need to generate ACPI tables for sound to make it work. Add a driver that does just this (i.e. at present does not actually support playing sound).
Signed-off-by: Simon Glass sjg@chromium.org ---
configs/sandbox_defconfig | 1 + doc/device-tree-bindings/sound/da7219.txt | 113 +++++++++++++++++++++ drivers/sound/Kconfig | 9 ++ drivers/sound/Makefile | 1 + drivers/sound/da7219.c | 115 ++++++++++++++++++++++ 5 files changed, 239 insertions(+) create mode 100644 doc/device-tree-bindings/sound/da7219.txt create mode 100644 drivers/sound/da7219.c
diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig index 83a42cfddf..cf1037f9a3 100644 --- a/configs/sandbox_defconfig +++ b/configs/sandbox_defconfig @@ -196,6 +196,7 @@ CONFIG_SANDBOX_SERIAL=y CONFIG_SMEM=y CONFIG_SANDBOX_SMEM=y CONFIG_SOUND=y +CONFIG_SOUND_DA7219=y CONFIG_SOUND_SANDBOX=y CONFIG_SANDBOX_SPI=y CONFIG_SPMI=y diff --git a/doc/device-tree-bindings/sound/da7219.txt b/doc/device-tree-bindings/sound/da7219.txt new file mode 100644 index 0000000000..5fd8a9f1e7 --- /dev/null +++ b/doc/device-tree-bindings/sound/da7219.txt @@ -0,0 +1,113 @@ +Dialog Semiconductor DA7219 Audio Codec bindings + +DA7219 is an audio codec with advanced accessory detect features. + +====== + +Required properties: +- compatible : Should be "dlg,da7219" +- reg: Specifies the I2C slave address + +- interrupts : IRQ line info for DA7219. + (See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt for + further information relating to interrupt properties) + +- VDD-supply: VDD power supply for the device +- VDDMIC-supply: VDDMIC power supply for the device +- VDDIO-supply: VDDIO power supply for the device + (See Documentation/devicetree/bindings/regulator/regulator.txt for further + information relating to regulators) + +Optional properties: +- interrupt-names : Name associated with interrupt line. Should be "wakeup" if + interrupt is to be used to wake system, otherwise "irq" should be used. +- wakeup-source: Flag to indicate this device can wake system (suspend/resume). + +- #clock-cells : Should be set to '<0>', only one clock source provided; +- clock-output-names : Name given for DAI clocks output; + +- clocks : phandle and clock specifier for codec MCLK. +- clock-names : Clock name string for 'clocks' attribute, should be "mclk". + +- dlg,micbias-lvl : Voltage (mV) for Mic Bias + [<1600>, <1800>, <2000>, <2200>, <2400>, <2600>] +- dlg,mic-amp-in-sel : Mic input source type + ["diff", "se_p", "se_n"] +- dlg,mclk-name : String name of MCLK for ACPI + +Deprecated properties: +- dlg,ldo-lvl : Required internal LDO voltage (mV) level for digital engine + (LDO unavailable in production HW so property no longer required). + +====== + +Child node - 'da7219_aad': + +Optional properties: +- dlg,micbias-pulse-lvl : Mic bias higher voltage pulse level (mV). + [<2800>, <2900>] +- dlg,micbias-pulse-time : Mic bias higher voltage pulse duration (ms) +- dlg,btn-cfg : Periodic button press measurements for 4-pole jack (ms) + [<2>, <5>, <10>, <50>, <100>, <200>, <500>] +- dlg,mic-det-thr : Impedance threshold for mic detection measurement (Ohms) + [<200>, <500>, <750>, <1000>] +- dlg,jack-ins-deb : Debounce time for jack insertion (ms) + [<5>, <10>, <20>, <50>, <100>, <200>, <500>, <1000>] +- dlg,jack-det-rate: Jack type detection latency (3/4 pole) + ["32ms_64ms", "64ms_128ms", "128ms_256ms", "256ms_512ms"] +- dlg,jack-rem-deb : Debounce time for jack removal (ms) + [<1>, <5>, <10>, <20>] +- dlg,a-d-btn-thr : Impedance threshold between buttons A and D + [0x0 - 0xFF] +- dlg,d-b-btn-thr : Impedance threshold between buttons D and B + [0x0 - 0xFF] +- dlg,b-c-btn-thr : Impedance threshold between buttons B and C + [0x0 - 0xFF] +- dlg,c-mic-btn-thr : Impedance threshold between button C and Mic + [0x0 - 0xFF] +- dlg,btn-avg : Number of 8-bit readings for averaged button measurement + [<1>, <2>, <4>, <8>] +- dlg,adc-1bit-rpt : Repeat count for 1-bit button measurement + [<1>, <2>, <4>, <8>] + +====== + +Example: + + codec: da7219@1a { + compatible = "dlg,da7219"; + reg = <0x1a>; + + interrupt-parent = <&gpio6>; + interrupts = <11 IRQ_TYPE_LEVEL_LOW>; + + VDD-supply = <®_audio>; + VDDMIC-supply = <®_audio>; + VDDIO-supply = <®_audio>; + + #clock-cells = <0>; + clock-output-names = "dai-clks"; + + clocks = <&clks 201>; + clock-names = "mclk"; + + dlg,ldo-lvl = <1200>; + dlg,micbias-lvl = <2600>; + dlg,mic-amp-in-sel = "diff"; + + da7219_aad { + dlg,btn-cfg = <50>; + dlg,mic-det-thr = <500>; + dlg,jack-ins-deb = <20>; + dlg,jack-det-rate = "32ms_64ms"; + dlg,jack-rem-deb = <1>; + + dlg,a-d-btn-thr = <0xa>; + dlg,d-b-btn-thr = <0x16>; + dlg,b-c-btn-thr = <0x21>; + dlg,c-mic-btn-thr = <0x3E>; + + dlg,btn-avg = <4>; + dlg,adc-1bit-rpt = <1>; + }; + }; diff --git a/drivers/sound/Kconfig b/drivers/sound/Kconfig index 4ebc719be2..7f214b97be 100644 --- a/drivers/sound/Kconfig +++ b/drivers/sound/Kconfig @@ -40,6 +40,15 @@ config I2S_SAMSUNG option provides an implementation for sound_init() and sound_play().
+config SOUND_DA7219 + bool "Dialog Semiconductor audio codec" + depends on SOUND + help + The DA7219 is an ultra-low-power audio codec with Advanced Accessory + Detection (AAD). This driver only supports generation of ACPI tables. + It does not support sound output or any of the other codec + features. + config SOUND_I8254 bool "Intel i8254 timer / beeper" depends on SOUND diff --git a/drivers/sound/Makefile b/drivers/sound/Makefile index 73ed7fe53c..8c3933ad15 100644 --- a/drivers/sound/Makefile +++ b/drivers/sound/Makefile @@ -7,6 +7,7 @@ obj-$(CONFIG_SOUND) += sound.o obj-$(CONFIG_SOUND) += codec-uclass.o obj-$(CONFIG_SOUND) += i2s-uclass.o obj-$(CONFIG_SOUND) += sound-uclass.o +obj-$(CONFIG_SOUND_DA7219) += da7219.o obj-$(CONFIG_I2S_SAMSUNG) += samsung-i2s.o obj-$(CONFIG_SOUND_SANDBOX) += sandbox.o obj-$(CONFIG_I2S_ROCKCHIP) += rockchip_i2s.o rockchip_sound.o diff --git a/drivers/sound/da7219.c b/drivers/sound/da7219.c new file mode 100644 index 0000000000..5dc822fc59 --- /dev/null +++ b/drivers/sound/da7219.c @@ -0,0 +1,115 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * ACPI driver for DA7219 codec + * + * Copyright 2019 Google LLC + * Parts taken from coreboot + */ + +#include <common.h> +#include <dm.h> +#include <i2c.h> +#include <irq.h> +#include <acpigen.h> +#include <acpi_device.h> +#include <asm-generic/gpio.h> +#include <dm/acpi.h> + +#define DA7219_ACPI_HID "DLGS7219" + +static int da7219_acpi_fill_ssdt(const struct udevice *dev, + struct acpi_ctx *ctx) +{ + char scope[ACPI_PATH_MAX]; + char name[ACPI_NAME_MAX]; + struct acpi_dp *dsd, *aad; + ofnode node; + u32 val; + int ret; + + ret = acpi_device_scope(dev, scope, sizeof(scope)); + if (ret) + return log_msg_ret("scope", ret); + ret = acpi_device_name(dev, name); + if (ret) + return log_msg_ret("name", ret); + + /* Device */ + acpigen_write_scope(ctx, scope); + acpigen_write_device(ctx, name); + acpigen_write_name_string(ctx, "_HID", DA7219_ACPI_HID); + acpigen_write_name_integer(ctx, "_UID", 1); + acpigen_write_name_string(ctx, "_DDN", + dev_read_string(dev, "acpi,desc")); + acpigen_write_name_integer(ctx, "_S0W", 4); + acpigen_write_sta(ctx, acpi_device_status(dev)); + + /* Resources */ + acpigen_write_name(ctx, "_CRS"); + acpigen_write_resourcetemplate_header(ctx); + ret = acpi_device_write_i2c_dev(ctx, dev); + if (ret) + return log_msg_ret("i2c", ret); + + /* Use either Interrupt() or GpioInt() */ + ret = acpi_device_write_interrupt_or_gpio(ctx, (struct udevice *)dev, + "req-gpios"); + if (ret) + return log_msg_ret("irq_gpio", ret); + acpigen_write_resourcetemplate_footer(ctx); + + /* AAD Child Device Properties */ + aad = acpi_dp_new_table("DAAD"); + if (!aad) + return log_msg_ret("aad", -ENOMEM); + + node = ofnode_find_subnode(dev_ofnode(dev), "da7219_aad"); + acpi_dp_ofnode_copy_int(node, aad, "dlg,btn-cfg"); + acpi_dp_ofnode_copy_int(node, aad, "dlg,mic-det-thr"); + acpi_dp_ofnode_copy_int(node, aad, "dlg,jack-ins-deb"); + acpi_dp_ofnode_copy_str(node, aad, "dlg,jack-det-rate"); + acpi_dp_ofnode_copy_int(node, aad, "dlg,jack-rem-deb"); + acpi_dp_ofnode_copy_int(node, aad, "dlg,a-d-btn-thr"); + acpi_dp_ofnode_copy_int(node, aad, "dlg,d-b-btn-thr"); + acpi_dp_ofnode_copy_int(node, aad, "dlg,b-c-btn-thr"); + acpi_dp_ofnode_copy_int(node, aad, "dlg,c-mic-btn-thr"); + acpi_dp_ofnode_copy_int(node, aad, "dlg,btn-avg"); + acpi_dp_ofnode_copy_int(node, aad, "dlg,adc-1bit-rpt"); + if (!ofnode_read_u32(node, "dlg,micbias-pulse-lvl", &val)) { + acpi_dp_ofnode_copy_int(node, aad, "dlg,micbias-pulse-lvl"); + acpi_dp_ofnode_copy_int(node, aad, "dlg,micbias-pulse-time"); + } + + /* DA7219 Properties */ + dsd = acpi_dp_new_table("_DSD"); + if (!dsd) + return log_msg_ret("dsd", -ENOMEM); + acpi_dp_dev_copy_int(dev, dsd, "dlg,micbias-lvl"); + acpi_dp_dev_copy_str(dev, dsd, "dlg,mic-amp-in-sel"); + acpi_dp_dev_copy_str(dev, dsd, "dlg,mclk-name"); + acpi_dp_add_child(dsd, "da7219_aad", aad); + + /* Write Device Property Hierarchy */ + acpi_dp_write(ctx, dsd); + + acpigen_pop_len(ctx); /* Device */ + acpigen_pop_len(ctx); /* Scope */ + + return 0; +} + +struct acpi_ops da7219_acpi_ops = { + .fill_ssdt = da7219_acpi_fill_ssdt, +}; + +static const struct udevice_id da7219_ids[] = { + { .compatible = "dlg,da7219" }, + { } +}; + +U_BOOT_DRIVER(da7219) = { + .name = "da7219", + .id = UCLASS_MISC, + .of_match = da7219_ids, + acpi_ops_ptr(&da7219_acpi_ops) +};