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T60: handle EC events in SMM if ACPI is disabled 

Change-Id: I6f9e90015cafef3da896453ef8e3588434ae3554
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Reviewed-on: http://review.coreboot.org/89
Tested-by: build bot (Jenkins)
This commit is contained in:
Sven Schnelle 2011-06-23 19:12:25 +02:00
parent a78d572968
commit 61cd5bfae4
5 changed files with 126 additions and 3 deletions
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4
src/mainboard/lenovo/t60/acpi/video.asl
View File

@ -19,6 +19,8 @@
* MA 02110-1301 USA
*/
#include "smi.h"
Device (DSPC)
{
Name (_ADR, 0x00020001)
@ -31,6 +33,7 @@ Device (DSPC)
Method(BRTD, 0, NotSerialized)
{
Trap(SMI_BRIGHTNESS_DOWN)
Store(BRTC, Local0)
if (LGreater (Local0, 15))
{
@ -41,6 +44,7 @@ Device (DSPC)
Method(BRTU, 0, NotSerialized)
{
Trap(SMI_BRIGHTNESS_UP)
Store (BRTC, Local0)
if (LLess(Local0, 0xff))
{

1
src/mainboard/lenovo/t60/devicetree.cb
View File

@ -66,6 +66,7 @@ chip northbridge/intel/i945
register "sata_ahci" = "0x0"
register "gpe0_en" = "0x11000006"
register "alt_gp_smi_en" = "0x1000"
device pci 1b.0 on # Audio Cnotroller
subsystemid 0x17aa 0x2010

3
src/mainboard/lenovo/t60/mainboard.c
View File

@ -61,7 +61,8 @@ static void mainboard_enable(device_t dev)
}
/* set dock status led */
ec_write(0x0c, inb(0x164c) & 8 ? 0x88 : 0x08);
ec_write(0x0c, 0x08);
ec_write(0x0c, inb(0x164c) & 8 ? 0x89 : 0x09);
if (get_option(&defaults_loaded, "cmos_defaults_loaded") < 0) {
printk(BIOS_INFO, "failed to get cmos_defaults_loaded");

119
src/mainboard/lenovo/t60/mainboard_smi.c
View File

@ -24,10 +24,12 @@
#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 "dock.h"
#include "smi.h"
#define LVTMA_BL_MOD_LEVEL 0x7af9 /* ATI Radeon backlight level */
/* The southbridge SMI handler checks whether gnvs has a
* valid pointer before calling the trap handler
*/
@ -38,7 +40,28 @@ static void mainboard_smm_init(void)
printk(BIOS_DEBUG, "initializing SMI\n");
/* Enable 0x1600/0x1600 register pair */
ec_set_bit(0x00, 0x05);
ec_set_ports(0x1604, 0x1600);
}
static void mainboard_smi_brightness_down(void)
{
u8 *bar;
if ((bar = (u8 *)pci_read_config32(PCI_DEV(1, 0, 0), 0x18))) {
printk(BIOS_DEBUG, "bar: %08X, level %02X\n", (unsigned int)bar, *(bar+LVTMA_BL_MOD_LEVEL));
*(bar+LVTMA_BL_MOD_LEVEL) &= 0xf0;
if (*(bar+LVTMA_BL_MOD_LEVEL) > 0x10)
*(bar+LVTMA_BL_MOD_LEVEL) -= 0x10;
}
}
static void mainboard_smi_brightness_up(void)
{
u8 *bar;
if ((bar = (u8 *)pci_read_config32(PCI_DEV(1, 0, 0), 0x18))) {
printk(BIOS_DEBUG, "bar: %08X, level %02X\n", (unsigned int )bar, *(bar+LVTMA_BL_MOD_LEVEL));
*(bar+LVTMA_BL_MOD_LEVEL) |= 0x0f;
if (*(bar+LVTMA_BL_MOD_LEVEL) < 0xf0)
*(bar+LVTMA_BL_MOD_LEVEL) += 0x10;
}
}
int mainboard_io_trap_handler(int smif)
@ -55,18 +78,29 @@ int mainboard_io_trap_handler(int smif)
dlpc_init();
if (!dock_connect()) {
/* set dock LED to indicate status */
ec_write(0x0c, 0x88);
ec_write(0x0c, 0x08);
ec_write(0x0c, 0x89);
} else {
/* blink dock LED to indicate failure */
ec_write(0x0c, 0xc8);
ec_write(0x0c, 0x09);
}
break;
case SMI_DOCK_DISCONNECT:
dock_disconnect();
ec_write(0x0c, 0x09);
ec_write(0x0c, 0x08);
break;
case SMI_BRIGHTNESS_UP:
mainboard_smi_brightness_up();
break;
case SMI_BRIGHTNESS_DOWN:
mainboard_smi_brightness_down();
break;
default:
return 0;
}
@ -76,3 +110,84 @@ int mainboard_io_trap_handler(int smif)
return 1;
}
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();
break;
/* brightness down */
case 0x15:
mainboard_smi_brightness_down();
break;
/* Fn-F9 Key */
case 0x18:
/* power loss */
case 0x27:
/* undock event */
case 0x50:
mainboard_io_trap_handler(SMI_DOCK_DISCONNECT);
break;
/* dock event */
case 0x37:
mainboard_io_trap_handler(SMI_DOCK_CONNECT);
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);
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);
break;
default:
break;
}
return 0;
}

2
src/mainboard/lenovo/t60/smi.h
View File

@ -22,5 +22,7 @@
#define SMI_DOCK_CONNECT 0x01
#define SMI_DOCK_DISCONNECT 0x02
#define SMI_BRIGHTNESS_UP 0x03
#define SMI_BRIGHTNESS_DOWN 0x04
#endif