diff options
| author | Shelley Chen <shchen@chromium.org> | 2017-01-12 13:23:17 -0800 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-01-13 21:49:02 -0800 |
| commit | 1d1042c1d575c9b9d4e54b183e56fe840d05efb2 (patch) | |
| tree | 8289c6f60174642cdc8b296715bd6efc70b46eb0 /common/power_button_x86.c | |
| parent | a9c79eede9fdff172ddc0b1048f0c544f85bf27e (diff) | |
| download | chrome-ec-1d1042c1d575c9b9d4e54b183e56fe840d05efb2.tar.gz | |
poppy: host command for configuring power button
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>
Diffstat (limited to 'common/power_button_x86.c')
| -rw-r--r-- | common/power_button_x86.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/common/power_button_x86.c b/common/power_button_x86.c index 864b88082e..ee85bc5c6d 100644 --- a/common/power_button_x86.c +++ b/common/power_button_x86.c @@ -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)); |