int mainboard_smi_apmc(u8 apmc)
{
ec_set_ports(EC_MAILBOX_PORT, EC_MAILBOX_PORT+1);
switch (apmc) {
case 0xe1: /* ACPI ENABLE */
send_ec_command(EC_SMI_DISABLE);
send_ec_command(EC_ACPI_ENABLE);
break;
case 0x1e: /* ACPI DISABLE */
send_ec_command(EC_SMI_ENABLE);
send_ec_command(EC_ACPI_DISABLE);
break;
case APMC_FINALIZE:
if (mainboard_finalized) {
printk(BIOS_DEBUG, "SMI#: Already finalized\n");
return 0;
}
intel_me_finalize_smm();
intel_pch_finalize_smm();
intel_sandybridge_finalize_smm();
intel_model_206ax_finalize_smm();
mainboard_finalized = 1;
break;
}
return 0;
}
void mainboard_suspend_resume(void)
{
/* Call SMM finalize() handlers before resume */
outb(0xcb, 0xb2);
/* Enable EC ACPI mode for the OS before resume */
send_ec_command(EC_SMI_DISABLE);
send_ec_command(EC_ACPI_ENABLE);
}
int ec_ext_write(uint16_t addr, uint8_t data)
{
send_ec_command(WR_EC);
send_ec_data(0x02);
send_ec_data(addr & 0xff);
send_ec_command(WX_EC);
send_ec_data(addr >> 8);
return send_ec_data(data);
}
uint8_t ec_ext_read(uint16_t addr)
{
send_ec_command(WR_EC);
send_ec_data(0x02);
send_ec_data(addr & 0xff);
send_ec_command(RX_EC);
send_ec_data(addr >> 8);
return recv_ec_data();
}
static void ec_setup(void)
{
/* Thermal limits? Values are from ectool's ram dump. */
ec_write(0xd1, 0x57); /* CPUH */
ec_write(0xd2, 0xc9); /* CPUL */
ec_write(0xd4, 0x64); /* SYSH */
ec_write(0xd5, 0xc9); /* SYSL */
send_ec_command(0x04); /* Set_SMI_Enable */
send_ec_command(0xab); /* Set_ACPI_Disable */
send_ec_command(0xac); /* Clr_SYS_Flag? well, why not? */
send_ec_command(0xad); /* Set_Thml_Value */
}
void mainboard_smi_gpi(u16 gpi_sts)
{
if (gpi_sts & (1 << EC_SMI_GPI)) {
/* Process all pending EC requests */
ec_set_ports(EC_MAILBOX_PORT, EC_MAILBOX_PORT+1);
while (mainboard_smi_ec() != 0xff);
/* The EC may keep asserting SMI# for some
* period unless we kick it here.
*/
send_ec_command(EC_SMI_DISABLE);
send_ec_command(EC_SMI_ENABLE);
}
}
int mainboard_smi_apmc(u8 apmc)
{
switch (apmc) {
case APM_CNT_ACPI_ENABLE:
send_ec_command(0x05); /* Set_SMI_Disable */
send_ec_command(0xaa); /* Set_ACPI_Enable */
break;
case APM_CNT_ACPI_DISABLE:
send_ec_command(0x04); /* Set_SMI_Enable */
send_ec_command(0xab); /* Set_ACPI_Disable */
break;
}
return 0;
}
uint8_t ec_read(uint8_t addr)
{
send_ec_command(RD_EC);
send_ec_data(addr);
return recv_ec_data();
}
u8 ec_read(u8 addr)
{
send_ec_command(0x80);
send_ec_data(addr);
return recv_ec_data();
}
int ec_write(uint8_t addr, uint8_t data)
{
send_ec_command(WR_EC);
send_ec_data(addr);
return send_ec_data(data);
}
/**
* Sets the PWM rate of a fan in IT8516E_MODE_PWM
*
* @param idx Selects the fan; 0: CPU, 1: System
* @param pwm PWM rate measured in 255ths
*/
static void it8516e_set_fan_pwm(const u8 idx, const u8 pwm)
{
if (send_ec_command(IT8516E_CMD_SET_FAN_PWM))
return;
if (send_ec_data(idx))
return;
send_ec_data(pwm);
}
/**
* Sets the operating mode of a fan
*
* @param idx Selects the fan; 0: CPU, 1: System
* @param mode Mode to set
*/
static void it8516e_set_fan_mode(const u8 idx, const u8 mode)
{
if (send_ec_command(IT8516E_CMD_SET_FAN_MODE))
return;
if (send_ec_data(idx))
return;
send_ec_data(mode);
}
/**
* Sets the minimum and maximum PWM rate of a fan in IT8516E_MODE_THERMAL
*
* @param idx Selects the fan; 0: CPU, 1: System
* @param min Minimum PWM rate in %
* @param max Maximum PWM rate in %
*/
static void it8516e_set_fan_limits(const u8 idx, const u8 min, const u8 max)
{
if (send_ec_command(IT8516E_CMD_SET_FAN_LIMITS))
return;
if (send_ec_data(idx))
return;
if (send_ec_data(min))
return;
send_ec_data(max);
}
/**
* Sets the target speed in RPM for a fan in IT8516E_MODE_SPEED
*
* @param idx Selects the fan; 0: CPU, 1: System
* @param speed Speed in RPM
*/
static void it8516e_set_fan_speed(const u8 idx, const u16 speed)
{
if (send_ec_command(IT8516E_CMD_SET_FAN_SPEED))
return;
if (send_ec_data(idx))
return;
if (send_ec_data(speed & 0xff))
return;
send_ec_data(speed >> 8);
}
/**
* Sets the target temperature for a fan in IT8516E_MODE_THERMAL
*
* @param idx Selects the fan; 0: CPU, 1: System
* @param temp Temperature in 64ths degree C
*/
static void it8516e_set_fan_temperature(const u8 idx, const u16 temp)
{
if (send_ec_command(IT8516E_CMD_SET_FAN_TEMP))
return;
if (send_ec_data(idx))
return;
if (send_ec_data(temp & 0xff))
return;
send_ec_data(temp >> 8);
}
/*
* Get Board ID via EC I/O port write/read
*/
int get_board_id(void)
{
uint8_t buffer[2];
uint8_t index;
if (send_ec_command(EC_FAB_ID_CMD) == 0) {
for (index = 0; index < sizeof(buffer); index++)
buffer[index] = recv_ec_data();
return (buffer[1] << 8) | buffer[0];
}
return -1;
}
void lumpy_ec_init(void)
{
printk(BIOS_DEBUG, "lumpy_ec_init\n");
if (acpi_slp_type == 3)
return;
/*
* Enable EC control of fan speed.
*
* This will be changed to OS control in ACPI EC _REG
* method when the OS is ready to control the fan.
*/
ec_write(EC_FAN_SPEED, 0);
send_ec_command_data(EC_BATTERY_MODE, EC_BATTERY_MODE_NORMAL);
send_ec_command_data(EC_POWER_BUTTON_MODE, EC_POWER_BUTTON_MODE_OS);
send_ec_command(EC_SMI_DISABLE);
send_ec_command(EC_ACPI_ENABLE);
send_ec_command(EC_BACKLIGHT_ON);
}
/* Get Board ID via EC I/O port write/read */
int get_board_id(void)
{
MAYBE_STATIC int id = -1;
if (id < 0) {
if (CONFIG(EC_GOOGLE_CHROMEEC))
id = get_board_id_via_ext_ec();
else{
uint8_t buffer[2];
uint8_t index;
if (send_ec_command(EC_FAB_ID_CMD) == 0) {
for (index = 0; index < sizeof(buffer); index++)
buffer[index] = recv_ec_data();
id = (buffer[0] << 8) | buffer[1];
}
}
}
return id;
}
u8 read_ec_command_byte(u8 command)
{
send_ec_command(command);
return __ec_read(EC_MAILBOX_DATA);
}
/**
* Sets the type of the external temperature sensor used
*
* @param type Type of sensor to set
*/
static void it8516e_set_systemp_type(const u8 type)
{
if (send_ec_command(IT8516E_CMD_SET_SYSTEMP_TYPE))
return;
send_ec_data(type);
}
void mainboard_suspend_resume(void)
{
/* Enable EC ACPI mode for the OS before resume */
send_ec_command(EC_SMI_DISABLE);
send_ec_command(EC_ACPI_ENABLE);
}
int ec_write(u8 addr, u8 data)
{
send_ec_command(0x81);
send_ec_data(addr);
return send_ec_data(data);
}
u8 ec_query(void)
{
send_ec_command(0x84);
return recv_ec_data();
}
uint8_t ec_query(void)
{
send_ec_command(QR_EC);
return recv_ec_data();
}
