| /* 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 <soc/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 tmp70, tmp72; |
| |
| tmp70 = inb(0x70); |
| tmp72 = inb(0x72); |
| |
| set_uint_option("tft_brightness", pci_read_config8(PCI_DEV(0, 2, 1), 0xf4)); |
| set_uint_option("volume", ec_read(H8_VOLUME_CONTROL)); |
| |
| 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; |
| } |