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- // 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 < 0)
- 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 < 0)
- 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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