--- /dev/null
+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>;
+ };
+ };
--- /dev/null
+// 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 <log.h>
+#include <acpi/acpigen.h>
+#include <acpi/acpi_device.h>
+#include <acpi/acpi_dp.h>
+#ifdef CONFIG_X86
+#include <asm/acpi_nhlt.h>
+#endif
+#include <asm-generic/gpio.h>
+#include <dt-bindings/sound/nhlt.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_get_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,ddn"));
+ 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");
+ if (!ofnode_valid(node))
+ return log_msg_ret("da7219_aad", -EINVAL);
+ 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;
+}
+
+/* For now only X86 boards support NHLT */
+#ifdef CONFIG_X86
+static const struct nhlt_format_config da7219_formats[] = {
+ /* 48 KHz 24-bits per sample. */
+ {
+ .num_channels = 2,
+ .sample_freq_khz = 48,
+ .container_bits_per_sample = 32,
+ .valid_bits_per_sample = 24,
+ .settings_file = "dialog-2ch-48khz-24b.dat",
+ },
+};
+
+static const struct nhlt_tdm_config tdm_config = {
+ .virtual_slot = 0,
+ .config_type = NHLT_TDM_BASIC,
+};
+
+static const struct nhlt_endp_descriptor da7219_descriptors[] = {
+ /* Render Endpoint */
+ {
+ .link = NHLT_LINK_SSP,
+ .device = NHLT_SSP_DEV_I2S,
+ .direction = NHLT_DIR_RENDER,
+ .vid = NHLT_VID,
+ .did = NHLT_DID_SSP,
+ .cfg = &tdm_config,
+ .cfg_size = sizeof(tdm_config),
+ .formats = da7219_formats,
+ .num_formats = ARRAY_SIZE(da7219_formats),
+ },
+ /* Capture Endpoint */
+ {
+ .link = NHLT_LINK_SSP,
+ .device = NHLT_SSP_DEV_I2S,
+ .direction = NHLT_DIR_CAPTURE,
+ .vid = NHLT_VID,
+ .did = NHLT_DID_SSP,
+ .cfg = &tdm_config,
+ .cfg_size = sizeof(tdm_config),
+ .formats = da7219_formats,
+ .num_formats = ARRAY_SIZE(da7219_formats),
+ },
+};
+
+static int da7219_acpi_setup_nhlt(const struct udevice *dev,
+ struct acpi_ctx *ctx)
+{
+ u32 hwlink;
+ int ret;
+
+ if (dev_read_u32(dev, "acpi,audio-link", &hwlink))
+ return log_msg_ret("link", -EINVAL);
+
+ /* Virtual bus id of SSP links are the hardware port ids proper. */
+ ret = nhlt_add_ssp_endpoints(ctx->nhlt, hwlink, da7219_descriptors,
+ ARRAY_SIZE(da7219_descriptors));
+ if (ret)
+ return log_msg_ret("add", ret);
+
+ return 0;
+}
+#endif
+
+struct acpi_ops da7219_acpi_ops = {
+ .fill_ssdt = da7219_acpi_fill_ssdt,
+#ifdef CONFIG_X86
+ .setup_nhlt = da7219_acpi_setup_nhlt,
+#endif
+};
+
+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)
+};
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