[PATCH 046/108] sound: Add an ACPI driver for Dialog Semicondutor da7219
Simon Glass
sjg at chromium.org
Mon Jan 27 06:05:53 CET 2020
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 at 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 at 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)
+};
--
2.25.0.341.g760bfbb309-goog
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