diff options
author | Sven Schnelle <svens@stackframe.org> | 2011-06-12 16:49:13 +0200 |
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committer | Sven Schnelle <svens@stackframe.org> | 2011-06-15 08:51:36 +0200 |
commit | 8b39e07d04e7231e655124d539356c2462ab6a18 (patch) | |
tree | 4029cdfab101ba9b394307e458efbb2075bfd956 /src/mainboard/lenovo/x60/mainboard_smi.c | |
parent | 4297a9a101f342ed9699848c8d55f26f78b3816c (diff) |
X60: handle EC events in SMM if ACPI is disabled
Change-Id: I0fee890bd2d667b54965201f5c90da3656d7af5c
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/27
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/mainboard/lenovo/x60/mainboard_smi.c')
-rw-r--r-- | src/mainboard/lenovo/x60/mainboard_smi.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/x60/mainboard_smi.c b/src/mainboard/lenovo/x60/mainboard_smi.c index 769432f618..fd10c9a9a4 100644 --- a/src/mainboard/lenovo/x60/mainboard_smi.c +++ b/src/mainboard/lenovo/x60/mainboard_smi.c @@ -24,6 +24,7 @@ #include <console/console.h> #include <cpu/x86/smm.h> #include "southbridge/intel/i82801gx/nvs.h" +#include "southbridge/intel/i82801gx/i82801gx.h" #include <ec/acpi/ec.h> #include <pc80/mc146818rtc.h> #include <ec/lenovo/h8/h8.h> @@ -98,3 +99,94 @@ int mainboard_io_trap_handler(int smif) * 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; + default: + break; + } +} + +void mainboard_smi_gpi(u16 gpi) +{ + if (gpi & (1 << 12)) + mainboard_smi_handle_ec_sci(); +} + +int mainboard_apm_cnt(u8 data) +{ + u16 pmbase = pci_read_config16(PCI_DEV(0, 0x1f, 0), 0x40) & 0xfffc; + u8 tmp; + + printk(BIOS_DEBUG, "%s: pmbase %04X, data %02X\n", __func__, pmbase, data); + + if (!pmbase) + return 0; + + switch(data) { + case APM_CNT_ACPI_ENABLE: + /* use 0x1600/0x1604 to prevent races with userspace */ + ec_set_ports(0x1604, 0x1600); + /* route H8SCI to SCI */ + outw(inw(ALT_GP_SMI_EN) & ~0x1000, pmbase + ALT_GP_SMI_EN); + tmp = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xbb); + tmp &= ~0x03; + tmp |= 0x02; + pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xbb, tmp); + /* 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 */ + outw(inw(pmbase + ALT_GP_SMI_EN) | 0x1000, pmbase + ALT_GP_SMI_EN); + tmp = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xbb); + tmp &= ~0x03; + tmp |= 0x01; + pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xbb, tmp); + /* discard all events, and enable attention */ + ec_write(0x80, 0x01); + break; + default: + break; + } + return 0; +} |