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ec/google/wilco: Add power related mailbox commands 

Add EC mailbox commands that are related to the power and state of the
system.  These commands include:

- read the power status registers from the EC
- read & clear the power status registers
- helper function to read the current lid state
- tell the EC why the host is about to power off
- tell the EC that the host is about to enter a sleep state

Change-Id: Iaa7051b4006e3c1687933e0384d962516220621f
Signed-off-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://review.coreboot.org/29116
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Duncan Laurie 2018-10-15 02:28:54 +00:00 committed by Duncan Laurie
parent b0bf280be4
commit 2f954921b8
2 changed files with 241 additions and 0 deletions
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99
src/ec/google/wilco/commands.c
View File

@ -50,3 +50,102 @@ void wilco_ec_print_all_info(void)
if (!wilco_ec_get_info(GET_EC_BUILD_DATE, info))
printk(BIOS_INFO, "EC Build Date : %s\n", info);
}
static int wilco_ec_get_power_smi(struct ec_pm_event_state *pm)
{
struct ec_response_power_smi {
uint8_t pm_event_1;
uint8_t pm_state_1;
uint8_t hotkey;
uint8_t pm_state_2;
uint8_t pm_state_3;
uint8_t pm_state_4;
uint8_t pm_state_5;
uint8_t pm_event_2;
uint8_t pm_state_6;
} __packed rsp;
if (!pm)
return -1;
if (wilco_ec_sendrecv_noargs(KB_POWER_SMI, &rsp, sizeof(rsp)) < 0)
return -1;
pm->event[0] = rsp.pm_event_1;
pm->event[1] = rsp.pm_event_2;
pm->state[0] = rsp.pm_state_1;
pm->state[1] = rsp.pm_state_2;
pm->state[2] = rsp.pm_state_3;
pm->state[3] = rsp.pm_state_4;
pm->state[4] = rsp.pm_state_5;
pm->state[5] = rsp.pm_state_6;
pm->hotkey = rsp.hotkey;
return 0;
}
static int wilco_ec_get_power_status(struct ec_pm_event_state *pm)
{
struct ec_response_power_status {
uint8_t pm_state_1;
uint8_t pm_state_2;
uint8_t pm_state_3;
uint8_t pm_state_4;
uint8_t pm_state_5;
uint8_t ac_type_lsb;
uint8_t pm_state_6;
uint8_t pm_event_2;
uint8_t ac_type_msb;
} __packed rsp;
if (!pm)
return -1;
if (wilco_ec_sendrecv_noargs(KB_POWER_STATUS, &rsp, sizeof(rsp)) < 0)
return -1;
pm->hotkey = 0;
pm->event[0] = 0;
pm->event[1] = rsp.pm_event_2;
pm->state[0] = rsp.pm_state_1;
pm->state[1] = rsp.pm_state_2;
pm->state[2] = rsp.pm_state_3;
pm->state[3] = rsp.pm_state_4;
pm->state[4] = rsp.pm_state_5;
pm->state[5] = rsp.pm_state_6;
pm->ac_type = rsp.ac_type_msb << 8 | rsp.ac_type_lsb;
return 0;
}
int wilco_ec_get_pm(struct ec_pm_event_state *pm, bool clear)
{
if (clear)
return wilco_ec_get_power_smi(pm);
else
return wilco_ec_get_power_status(pm);
}
int wilco_ec_get_lid_state(void)
{
struct ec_pm_event_state pm;
if (wilco_ec_get_power_status(&pm) < 0)
return -1;
return !!(pm.state[0] & EC_PM1_LID_OPEN);
}
void wilco_ec_slp_en(void)
{
/* EC does not respond to this command */
if (wilco_ec_mailbox(WILCO_EC_MSG_NO_RESPONSE,
KB_SLP_EN, NULL, 0, NULL, 0) < 0)
printk(BIOS_ERR, "%s: command failed\n", __func__);
}
void wilco_ec_power_off(enum ec_power_off_reason reason)
{
/* EC does not respond to this command */
if (wilco_ec_mailbox(WILCO_EC_MSG_NO_RESPONSE,
KB_POWER_OFF, &reason, 1, NULL, 0) < 0)
printk(BIOS_ERR, "%s: command failed\n", __func__);
}

142
src/ec/google/wilco/commands.h
View File

@ -17,14 +17,23 @@
#define EC_GOOGLE_WILCO_COMMANDS_H
#include <stdint.h>
#include <types.h>
enum {
/* Read and clear power state information */
KB_POWER_SMI = 0x04,
/* Read but do not clear power state information */
KB_POWER_STATUS = 0x05,
/* Inform the EC aboout the reason host is turning off */
KB_POWER_OFF = 0x08,
/* Retrieve information about the EC */
KB_EC_INFO = 0x38,
/* Set ACPI mode on or off */
KB_ACPI = 0x3a,
/* Manage the EC power button passthru to the host */
KB_POWER_BUTTON_TO_HOST = 0x3e,
/* Inform the EC that the host is about to enter S3 */
KB_SLP_EN = 0x64,
};
enum set_acpi_mode_cmd {
@ -74,4 +83,137 @@ int wilco_ec_get_info(enum get_ec_info_cmd cmd, char *info);
*/
void wilco_ec_print_all_info(void);
/*
* EC Power State
*/
enum ec_power_off_reason {
EC_PWROFF_FLASH = 0x11,
EC_PWROFF_AC_REMOVED = 0x12,
EC_PWROFF_BAT_REMOVED = 0x13,
EC_PWROFF_LOBAT = 0x15,
EC_PWROFF_PWRB_IN_POST = 0x16,
EC_PWROFF_FORCE_IMMEDIATE = 0x18,
EC_PWROFF_WDT = 0x1b,
EC_PWROFF_FORCE_THERMAL = 0x22,
EC_PWROFF_ERR_CODE = 0x23,
EC_PWROFF_PAID_PWRGD = 0x27,
EC_PWROFF_PAID_CPU = 0x28,
EC_PWROFF_PAID_GFX = 0x29,
EC_PWROFF_PAID_CLK = 0x2a,
EC_PWROFF_PAID_NOMEMORY = 0x2b,
EC_PWROFF_PAID_MEMORY_ERR = 0x2c,
EC_PWROFF_PAID_MEMORY_SPD = 0x2d,
EC_SWOFF_ACPI = 0x31,
EC_SWOFF_BOOT_PASSWORD = 0x33,
EC_SWOFF_DISK_PASSWORD = 0x34,
EC_SWOFF_POWER_CYCLE = 0x37,
EC_SWOFF_HARD_RESET = 0x3b,
EC_SWOFF_FSMI = 0x3f,
EC_PWRLOG_THERMTRIP = 0x41,
EC_PWRLOG_NO_S5 = 0x42,
EC_PWROFF_4S_PWRB = 0x44,
EC_PWROFF_ASF2_FORCEOFF = 0x45,
EC_PWROFF_PWRB_THERMAL = 0x48,
EC_PWROFF_AOAC_TIMER = 0x4b,
};
/**
* wilco_ec_power_off
*
* Tell the EC why the host is about to power off.
*/
void wilco_ec_power_off(enum ec_power_off_reason reason);
/**
* wilco_ec_slp_en
*
* Tell the EC that the host is entering a sleep state.
*/
void wilco_ec_slp_en(void);
enum ec_pm1_state {
EC_PM1_AC_AVAIL = BIT(0), /* AC available */
EC_PM1_BAT_AVAIL = BIT(1), /* Battery available */
EC_PM1_LO_BAT1 = BIT(2), /* Battery 1 low */
EC_PM1_LO_BAT2 = BIT(3), /* Battery 2 low */
EC_PM1_LID_OPEN = BIT(4), /* Lid is open */
EC_PM1_LCD_POWER = BIT(5), /* LCD is powered */
EC_PM1_OVER_TEMP = BIT(6), /* CPU is over temperature */
EC_PM1_DOCKED = BIT(7), /* System is docked */
};
enum ec_pm2_state {
EC_PM2_SYS_MB_PCIE = BIT(0), /* MB has PCIe */
EC_PM2_SYS_MB_SATA = BIT(1), /* MB has SATA */
EC_PM2_PWRB_PRESSED = BIT(2), /* Power button is pressed */
EC_PM2_TURBO_MODE = BIT(3), /* Turbo mode */
};
enum ec_pm3_state {
EC_PM3_BAT1_PRES = BIT(2), /* Battery 1 is present */
EC_PM3_BAT2_PRES = BIT(3), /* Battery 2 is present */
EC_PM3_LOWER_PSTATE = BIT(6), /* EC requests lower P-state */
EC_PM3_CPU_THROTTLE = BIT(7), /* EC requests CPU throttle */
};
enum ec_pm4_state {
EC_PM4_BAT1_CHG = BIT(0), /* Battery 1 is being charged */
EC_PM4_BAT2_CHG = BIT(1), /* Battery 2 is being charged */
EC_PM4_BAT1_PWR = BIT(2), /* Battery 1 is powering the system */
EC_PM4_BAT2_PWR = BIT(3), /* Battery 2 is powering the system */
EC_PM4_PANEL_STATE = BIT(5), /* Panel power state */
};
enum ec_pm5_state {
EC_PM5_INT_HD_SATA = BIT(7), /* Internal SATA HDD */
};
enum ec_pm6_state {
EC_PM6_WLAN_SWITCH = BIT(0), /* Wireless switch */
EC_PM6_SYS_MB_MODEM = BIT(1), /* MB has modem */
EC_PM6_ETH_STATE = BIT(2), /* Ethernet cable state */
EC_PM6_AC_UPDATE = BIT(3), /* Update AC information */
};
enum ec_pm1_event {
EC_EV1_PWRB_PRESSED = BIT(0), /* Power button was pressed */
EC_EV1_HOTKEY_PRESSED = BIT(1), /* Hotkey was pressed */
EC_EV1_STATE_CHANGED = BIT(2), /* PMx state changed */
};
enum ec_pm2_event {
EC_EV2_ACPI_MONSWITCH = BIT(0), /* Monitor switch status */
};
struct ec_pm_event_state {
uint8_t event[2]; /* ec_pm{1,2}_event */
uint8_t state[6]; /* ec_pm{1,2,3,4,5,6}_state */
uint8_t hotkey; /* Hotkey, if pressed */
uint16_t ac_type; /* AC adapter information */
};
/**
* wilco_ec_get_pm
*
* Retrieve power and event information from the EC.
*
* @pm: Power event state structure to fill out
* @clear: Clear EC event state after reading
*
* Returns 0 if EC command was successful
* Returns -1 if EC command failed
*/
int wilco_ec_get_pm(struct ec_pm_event_state *pm, bool clear);
/**
* wilco_ec_get_lid_state
*
* Retrieve the lid state without clearing it in the EC.
*
* Returns 1 if the lid is open, 0 if it is closed
* Returns -1 if the EC command failed
*/
int wilco_ec_get_lid_state(void);
#endif /* EC_GOOGLE_WILCO_COMMANDS_H */