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poppy: host command for configuring power button

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Specifically, we are using a bit to disable the
SMI pulse on x86 systems so that we can use the
power button for menu selection.

BUG=chrome-os-partner:61275
BRANCH=None
TEST=Try running with depthcharge sending the host command
     during detachable FW menus and making sure power
     button select doesn't turn off device on reef.

Change-Id: I4a68cf514d514a4abe98beb99e7934d6fb0f44bd
Signed-off-by: Shelley Chen <shchen@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/427413
Reviewed-by: Aseda Aboagye <aaboagye@chromium.org>
This commit is contained in:
Shelley Chen
2017-01-12 13:23:17 -08:00
committed by chrome-bot
parent a9c79eede9
commit 1d1042c1d5
2 changed files with 43 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
common/power_button_x86.c
View File

@@ -112,6 +112,11 @@ static const char * const state_names[] = {
*/
static uint64_t tnext_state;
/*
* Determines whether to execute initial SMI pulse (t0 stage)
*/
static int smi_enabled = 1;
static void set_pwrbtn_to_pch(int high, int init)
{
/*
@@ -265,12 +270,18 @@ static void state_machine(uint64_t tnow)
chipset_exit_hard_off();
tnext_state = tnow + PWRBTN_INITIAL_US;
pwrbtn_state = PWRBTN_STATE_WAS_OFF;
set_pwrbtn_to_pch(0, 0);
} else {
/* Chipset is on, so send the chipset a pulse */
tnext_state = tnow + PWRBTN_DELAY_T0;
pwrbtn_state = PWRBTN_STATE_T0;
if (smi_enabled) {
/* Chipset is on, so send the chipset a pulse */
tnext_state = tnow + PWRBTN_DELAY_T0;
pwrbtn_state = PWRBTN_STATE_T0;
set_pwrbtn_to_pch(0, 0);
} else {
tnext_state = tnow + PWRBTN_DELAY_T1;
pwrbtn_state = PWRBTN_STATE_T1;
}
}
set_pwrbtn_to_pch(0, 0);
break;
case PWRBTN_STATE_T0:
tnext_state = tnow + PWRBTN_DELAY_T1;
@@ -460,3 +471,17 @@ static void powerbtn_x86_charge(void)
task_wake(TASK_ID_POWERBTN);
}
DECLARE_HOOK(HOOK_CHARGE_STATE_CHANGE, powerbtn_x86_charge, HOOK_PRIO_DEFAULT);
/**
* Handle configuring the power button behavior through a host command
*/
static int hc_config_powerbtn_x86(struct host_cmd_handler_args *args)
{
const struct ec_params_config_power_button *p = args->params;
smi_enabled = p->flags & (1 << EC_POWER_BUTTON_ENABLE_SMI_PULSE);
return EC_SUCCESS;
}
DECLARE_HOST_COMMAND(EC_CMD_CONFIG_POWER_BUTTON, hc_config_powerbtn_x86,
EC_VER_MASK(0));

14
include/ec_commands.h
View File

@@ -2253,6 +2253,20 @@ struct __ec_align1 ec_params_force_lid_open {
uint8_t enabled;
};
/*****************************************************************************/
/* Configure the behavior of the power button */
#define EC_CMD_CONFIG_POWER_BUTTON 0x002D
enum ec_config_power_button_flags {
/* Enable/Disable SMI pulses for x86 devices */
EC_POWER_BUTTON_ENABLE_SMI_PULSE = 1 << 0,
};
struct __ec_align1 ec_params_config_power_button {
/* See enum ec_config_power_button_flags */
uint8_t flags;
};
/*****************************************************************************/
/* USB charging control commands */