mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2025-09-19 21:01:51 +02:00
d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commit c8ffd1356d42223cbb8c86280a083cc3c93e6426, reversing changes made to 2ee6f3a5f7550de3599faef9704e166e5dcace35. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
121 lines
2.8 KiB
C
121 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Generic WiFi ACPI info
|
|
*
|
|
* Copyright 2019 Google LLC
|
|
* Modified from coreboot src/drivers/wifi/generic.c
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <log.h>
|
|
#include <acpi/acpigen.h>
|
|
#include <acpi/acpi_device.h>
|
|
#include <dm.h>
|
|
#include <dm/acpi.h>
|
|
|
|
/* WRDS Spec Revision */
|
|
#define WRDS_REVISION 0x0
|
|
|
|
/* EWRD Spec Revision */
|
|
#define EWRD_REVISION 0x0
|
|
|
|
/* WRDS Domain type */
|
|
#define WRDS_DOMAIN_TYPE_WIFI 0x7
|
|
|
|
/* EWRD Domain type */
|
|
#define EWRD_DOMAIN_TYPE_WIFI 0x7
|
|
|
|
/* WGDS Domain type */
|
|
#define WGDS_DOMAIN_TYPE_WIFI 0x7
|
|
|
|
/*
|
|
* WIFI ACPI NAME = "WF" + hex value of last 8 bits of dev_path_encode + '\0'
|
|
* The above representation returns unique and consistent name every time
|
|
* generate_wifi_acpi_name is invoked. The last 8 bits of dev_path_encode is
|
|
* chosen since it contains the bus address of the device.
|
|
*/
|
|
#define WIFI_ACPI_NAME_MAX_LEN 5
|
|
|
|
/**
|
|
* struct generic_wifi_config - Data structure to contain common wifi config
|
|
* @wake: Wake pin for ACPI _PRW
|
|
* @maxsleep: Maximum sleep state to wake from
|
|
*/
|
|
struct generic_wifi_config {
|
|
unsigned int wake;
|
|
unsigned int maxsleep;
|
|
};
|
|
|
|
static int generic_wifi_fill_ssdt(struct acpi_ctx *ctx,
|
|
const struct udevice *dev,
|
|
const struct generic_wifi_config *config)
|
|
{
|
|
char name[ACPI_NAME_MAX];
|
|
char path[ACPI_PATH_MAX];
|
|
pci_dev_t bdf;
|
|
u32 address;
|
|
int ret;
|
|
|
|
ret = acpi_device_path(dev_get_parent(dev), path, sizeof(path));
|
|
if (ret)
|
|
return log_msg_ret("path", ret);
|
|
ret = acpi_get_name(dev, name);
|
|
if (ret)
|
|
return log_msg_ret("name", ret);
|
|
|
|
/* Device */
|
|
acpigen_write_scope(ctx, path);
|
|
acpigen_write_device(ctx, name);
|
|
acpigen_write_name_integer(ctx, "_UID", 0);
|
|
acpigen_write_name_string(ctx, "_DDN",
|
|
dev_read_string(dev, "acpi,ddn"));
|
|
|
|
/* Address */
|
|
bdf = dm_pci_get_bdf(dev);
|
|
address = (PCI_DEV(bdf) << 16) | PCI_FUNC(bdf);
|
|
acpigen_write_name_dword(ctx, "_ADR", address);
|
|
|
|
/* Wake capabilities */
|
|
if (config)
|
|
acpigen_write_prw(ctx, config->wake, config->maxsleep);
|
|
|
|
acpigen_pop_len(ctx); /* Device */
|
|
acpigen_pop_len(ctx); /* Scope */
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int intel_wifi_acpi_fill_ssdt(const struct udevice *dev,
|
|
struct acpi_ctx *ctx)
|
|
{
|
|
struct generic_wifi_config config;
|
|
bool have_config;
|
|
int ret;
|
|
|
|
ret = dev_read_u32(dev, "acpi,wake", &config.wake);
|
|
have_config = !ret;
|
|
/* By default, all intel wifi chips wake from S3 */
|
|
config.maxsleep = 3;
|
|
ret = generic_wifi_fill_ssdt(ctx, dev, have_config ? &config : NULL);
|
|
if (ret)
|
|
return log_msg_ret("wifi", ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct acpi_ops wifi_acpi_ops = {
|
|
.fill_ssdt = intel_wifi_acpi_fill_ssdt,
|
|
};
|
|
|
|
static const struct udevice_id intel_wifi_ids[] = {
|
|
{ .compatible = "intel,generic-wifi" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(intel_wifi) = {
|
|
.name = "intel_wifi",
|
|
.id = UCLASS_MISC,
|
|
.of_match = intel_wifi_ids,
|
|
ACPI_OPS_PTR(&wifi_acpi_ops)
|
|
};
|