mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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1655c8727a
This is cleaner than having x86_power explicitly know about everything else in the system that cares about power transitions. Signed-off-by: Randall Spangler <rspangler@chromium.org> BUG=none TEST=boot and shutdown system; still works. Mouse powered to system is off in S5. Change-Id: Ib673ca2d9edd5473334e7604e98b99b02b768419
68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* System hooks for Chrome EC */
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#include "hooks.h"
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#include "link_defs.h"
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#include "util.h"
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struct hook_ptrs {
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const struct hook_data *start;
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const struct hook_data *end;
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};
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/* Hook data start and end pointers for each type of hook. Must be in same
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* order as enum hook_type. */
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static const struct hook_ptrs hook_list[] = {
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{__hooks_init, __hooks_init_end},
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{__hooks_freq_change, __hooks_freq_change_end},
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{__hooks_sysjump, __hooks_sysjump_end},
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{__hooks_chipset_startup, __hooks_chipset_startup_end},
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{__hooks_chipset_resume, __hooks_chipset_resume_end},
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{__hooks_chipset_suspend, __hooks_chipset_suspend_end},
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{__hooks_chipset_shutdown, __hooks_chipset_shutdown_end},
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};
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int hook_notify(enum hook_type type, int stop_on_error)
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{
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const struct hook_data *start, *end, *p;
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int count, called = 0;
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int last_prio = HOOK_PRIO_FIRST - 1, prio;
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int rv_error = EC_SUCCESS, rv;
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start = hook_list[type].start;
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end = hook_list[type].end;
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count = ((uint32_t)end - (uint32_t)start) / sizeof(struct hook_data);
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/* Call all the hooks in priority order */
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while (called < count) {
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/* Find the lowest remaining priority */
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for (p = start, prio = HOOK_PRIO_LAST + 1; p < end; p++) {
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if (p->priority < prio && p->priority > last_prio)
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prio = p->priority;
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}
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last_prio = prio;
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/* Call all the hooks with that priority */
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for (p = start; p < end; p++) {
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if (p->priority == prio) {
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called++;
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rv = p->routine();
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if (rv != EC_SUCCESS) {
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if (stop_on_error)
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return rv;
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else if (rv_error == EC_SUCCESS)
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rv_error = rv;
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}
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}
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}
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}
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/* Return the first error seen, if any */
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return rv_error;
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}
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