diff options
Diffstat (limited to 'power/ec_driven.c')
-rw-r--r-- | power/ec_driven.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/power/ec_driven.c b/power/ec_driven.c new file mode 100644 index 0000000000..67cfefb95e --- /dev/null +++ b/power/ec_driven.c @@ -0,0 +1,55 @@ +/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* + * Dummy power module for Sensor HUB. + * + * This implements the following features: + * when AP_IN_SUSPEND is low, in S0, otherwise S3. + * + */ + +#include "chipset.h" /* This module implements chipset functions too */ +#include "common.h" +#include "console.h" +#include "gpio.h" +#include "hooks.h" +#include "power.h" +#include "task.h" +#include "util.h" + +/* Console output macros */ +#define CPUTS(outstr) cputs(CC_CHIPSET, outstr) +#define CPRINTS(format, args...) cprints(CC_CHIPSET, format, ## args) + +#define IN_SUSPEND POWER_SIGNAL_MASK(ECDRIVEN_SUSPEND_ASSERTED) + +enum power_state power_chipset_init(void) +{ + return POWER_S3; +} + +enum power_state power_handle_state(enum power_state state) +{ + switch (state) { + case POWER_S3: + if (!(power_get_signals() & IN_SUSPEND)) { + hook_notify(HOOK_CHIPSET_RESUME); + return POWER_S0; + } + return state; + + case POWER_S0: + if (power_get_signals() & IN_SUSPEND) { + hook_notify(HOOK_CHIPSET_SUSPEND); + return POWER_S3; + } + return state; + default: + CPRINTS("Unexpected state: $d", state); + } + + return state; +} |