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/* SPDX-License-Identifier: GPL-2.0-only */
#include <acpi/acpi.h>
#include <baseboard/cbi_ssfc.h>
#include <baseboard/variants.h>
#include <boardid.h>
#include <bootstate.h>
#include <console/console.h>
#include <device/device.h>
#include <device/pci_def.h>
#include <device/pci_ops.h>
#include <drivers/i2c/generic/chip.h>
#include <ec/google/chromeec/ec.h>
#include <ec/ec.h>
#include <intelblocks/xhci.h>
#include <nhlt.h>
#include <smbios.h>
#include <soc/cpu.h>
#include <soc/gpio.h>
#include <soc/nhlt.h>
#include <soc/pci_devs.h>
#include <stdint.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include <variant/ec.h>
#include <variant/gpio.h>
extern struct chip_operations drivers_i2c_generic_ops;
extern struct chip_operations drivers_i2c_da7219_ops;
static bool is_cnvi_held_in_reset(void)
{
struct device *dev = pcidev_path_on_root(PCH_DEVFN_CNVI);
uint32_t reg = pci_read_config32(dev, PCI_VENDOR_ID);
/*
* If vendor/device ID for CNVi reads as 0xffffffff, then it is safe to
* assume that it is being held in reset.
*/
if (reg == 0xffffffff)
return true;
return false;
}
static void disable_wifi_wake(void)
{
static const struct pad_config wifi_wake_gpio[] = {
PAD_NC(GPIO_119, UP_20K),
};
gpio_configure_pads(wifi_wake_gpio, ARRAY_SIZE(wifi_wake_gpio));
}
/*
* GPIO_137 for two audio codecs right now has the different configuration so
* if SSFC indicates that codec is different than default one then GPIO_137
* needs to be overridden for the corresponding second source.
*/
static void gpio_modification_by_ssfc(struct pad_config *table, size_t num)
{
/* For RT5682, GPIO 137 should be set as EDGE_BOTH. */
const struct pad_config rt5682_gpio_137 = PAD_CFG_GPI_APIC_IOS(GPIO_137,
NONE, DEEP, EDGE_BOTH, INVERT, HIZCRx1, DISPUPD);
if (table == NULL || num == 0)
return;
/*
* Currently we only have the case of RT5682 as the second source. And
* in case of Ampton which used RT5682 as the default source, it didn't
* provide override_table right now so it will be returned ealier since
* table above is NULL.
*/
if (ssfc_get_audio_codec() != SSFC_AUDIO_CODEC_RT5682)
return;
while (num--) {
if (table->pad == GPIO_137) {
*table = rt5682_gpio_137;
printk(BIOS_INFO,
"Configure GPIO 137 based on SSFC.\n");
return;
}
table++;
}
}
static void mainboard_init(void *chip_info)
{
int boardid;
const struct pad_config *base_pads;
const struct pad_config *override_pads;
size_t base_num, override_num;
boardid = board_id();
printk(BIOS_INFO, "Board ID: %d\n", boardid);
base_pads = variant_base_gpio_table(&base_num);
override_pads = variant_override_gpio_table(&override_num);
gpio_modification_by_ssfc((struct pad_config *)override_pads,
override_num);
gpio_configure_pads_with_override(base_pads, base_num,
override_pads, override_num);
if (!is_cnvi_held_in_reset())
disable_wifi_wake();
mainboard_ec_init();
}
static unsigned long mainboard_write_acpi_tables(
const struct device *device, unsigned long current, acpi_rsdp_t *rsdp)
{
uintptr_t start_addr;
uintptr_t end_addr;
struct nhlt *nhlt;
start_addr = current;
nhlt = nhlt_init();
if (nhlt == NULL)
return start_addr;
variant_nhlt_init(nhlt);
end_addr = nhlt_soc_serialize(nhlt, start_addr);
if (end_addr != start_addr)
acpi_add_table(rsdp, (void *)start_addr);
return end_addr;
}
static void mainboard_enable(struct device *dev)
{
dev->ops->write_acpi_tables = mainboard_write_acpi_tables;
dev->ops->acpi_inject_dsdt = chromeos_dsdt_generator;
}
struct chip_operations mainboard_ops = {
.init = mainboard_init,
.enable_dev = mainboard_enable,
};
void __weak variant_update_devtree(struct device *dev)
{
/* Place holder for common updates. */
}
/*
* Check if CNVi PCI device is released from reset. If yes, then the system is
* booting with CNVi module. In this case, the PCIe device for WiFi needs to
* be disabled. If CNVi device is held in reset, then disable it.
*/
static void wifi_device_update(void)
{
struct device *dev;
unsigned int devfn;
if (is_cnvi_held_in_reset())
devfn = PCH_DEVFN_CNVI;
else
devfn = PCH_DEVFN_PCIE1;
dev = pcidev_path_on_root(devfn);
if (dev)
dev->enabled = 0;
}
/*
* Base on SSFC value in the CBI from EC to enable one of audio codec sources in
* the device tree.
*/
static void audio_codec_device_update(void)
{
struct device *audio_dev = NULL;
struct bus *audio_i2c_bus =
pcidev_path_on_root(PCH_DEVFN_I2C5)->link_list;
enum ssfc_audio_codec codec = ssfc_get_audio_codec();
while ((audio_dev = dev_bus_each_child(audio_i2c_bus, audio_dev))) {
if (audio_dev->chip_info == NULL)
continue;
if ((audio_dev->chip_ops == &drivers_i2c_da7219_ops) &&
(codec == SSFC_AUDIO_CODEC_DA7219)) {
printk(BIOS_INFO, "enable DA7219.\n");
continue;
}
if ((audio_dev->chip_ops == &drivers_i2c_generic_ops) &&
(codec == SSFC_AUDIO_CODEC_RT5682)) {
struct drivers_i2c_generic_config *cfg =
audio_dev->chip_info;
if (cfg != NULL && !strcmp(cfg->hid, "10EC5682")) {
printk(BIOS_INFO, "enable RT5682.\n");
continue;
}
}
printk(BIOS_INFO, "%s has been disabled\n", audio_dev->chip_ops->name);
audio_dev->enabled = 0;
}
}
void mainboard_devtree_update(struct device *dev)
{
/* Apply common devtree updates. */
wifi_device_update();
audio_codec_device_update();
/* Defer to variant for board-specific updates. */
variant_update_devtree(dev);
}
bool __weak variant_ext_usb_status(unsigned int port_type, unsigned int port_id)
{
/* All externally visible USB ports are present */
return true;
}
static void disable_unused_devices(void *unused)
{
usb_xhci_disable_unused(variant_ext_usb_status);
}
BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_EXIT, disable_unused_devices, NULL);
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