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/* SPDX-License-Identifier: GPL-2.0-only */
#include <arch/io.h>
#include <device/pci_ops.h>
#include <console/console.h>
#include <cpu/x86/smm.h>
#include <southbridge/intel/i82801gx/nvs.h>
#include <southbridge/intel/common/pmutil.h>
#include <ec/acpi/ec.h>
#include <option.h>
#include <ec/lenovo/h8/h8.h>
#include <delay.h>
#include "dock.h"
#include "smi.h"
#define GPE_EC_SCI 12
static void mainboard_smi_save_cmos(void)
{
u8 val;
u8 tmp70, tmp72;
tmp70 = inb(0x70);
tmp72 = inb(0x72);
val = pci_read_config8(PCI_DEV(0, 2, 1), 0xf4);
set_option("tft_brightness", &val);
val = ec_read(H8_VOLUME_CONTROL);
set_option("volume", &val);
outb(tmp70, 0x70);
outb(tmp72, 0x72);
}
int mainboard_io_trap_handler(int smif)
{
switch (smif) {
case SMI_DOCK_CONNECT:
ec_clr_bit(0x03, 2);
mdelay(250);
if (!dock_connect()) {
ec_set_bit(0x03, 2);
/* set dock LED to indicate status */
ec_write(0x0c, 0x09);
ec_write(0x0c, 0x88);
} else {
/* blink dock LED to indicate failure */
ec_write(0x0c, 0x08);
ec_write(0x0c, 0xc9);
}
break;
case SMI_DOCK_DISCONNECT:
ec_clr_bit(0x03, 2);
dock_disconnect();
break;
case SMI_SAVE_CMOS:
mainboard_smi_save_cmos();
break;
default:
return 0;
}
/* On success, the IO Trap Handler returns 1
* On failure, the IO Trap Handler returns a value != 1 */
return 1;
}
static void mainboard_smi_brightness_up(void)
{
u8 value;
if ((value = pci_read_config8(PCI_DEV(0, 2, 1), 0xf4)) < 0xf0)
pci_write_config8(PCI_DEV(0, 2, 1), 0xf4, (value + 0x10) | 0xf);
}
static void mainboard_smi_brightness_down(void)
{
u8 value;
if ((value = pci_read_config8(PCI_DEV(0, 2, 1), 0xf4)) > 0x10)
pci_write_config8(PCI_DEV(0, 2, 1), 0xf4, (value - 0x10) & 0xf0);
}
static void mainboard_smi_handle_ec_sci(void)
{
u8 status = inb(EC_SC);
u8 event;
if (!(status & EC_SCI_EVT))
return;
event = ec_query();
printk(BIOS_DEBUG, "EC event %02x\n", event);
switch (event) {
/* brightness up */
case 0x14:
mainboard_smi_brightness_up();
mainboard_smi_save_cmos();
break;
/* brightness down */
case 0x15:
mainboard_smi_brightness_down();
mainboard_smi_save_cmos();
break;
/* Fn-F9 key */
case 0x18:
/* Power loss */
case 0x27:
/* Undock Key */
case 0x50:
mainboard_io_trap_handler(SMI_DOCK_DISCONNECT);
break;
/* Dock Event */
case 0x37:
case 0x58:
mainboard_io_trap_handler(SMI_DOCK_CONNECT);
break;
default:
break;
}
}
void mainboard_smi_gpi(u32 gpi)
{
if (gpi & (1 << GPE_EC_SCI))
mainboard_smi_handle_ec_sci();
}
int mainboard_smi_apmc(u8 data)
{
switch (data) {
case APM_CNT_ACPI_ENABLE:
/* use 0x1600/0x1604 to prevent races with userspace */
ec_set_ports(0x1604, 0x1600);
/* route H8SCI to SCI */
gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SCI);
/* discard all events, and enable attention */
ec_write(0x80, 0x01);
break;
case APM_CNT_ACPI_DISABLE:
/* we have to use port 0x62/0x66, as 0x1600/0x1604 doesn't
provide a EC query function */
ec_set_ports(0x66, 0x62);
/* route H8SCI# to SMI */
gpi_route_interrupt(GPE_EC_SCI, GPI_IS_SMI);
/* discard all events, and enable attention */
ec_write(0x80, 0x01);
break;
default:
break;
}
return 0;
}
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