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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)
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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