mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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70f3fcaf86
This will be used for sleep/wake/sysjump/etc. For now it's just wired up to clock frequency changing. Signed-off-by: Randall Spangler <rspangler@chromium.org> BUG=none TEST=manual: use nopll command, should still work Change-Id: Iedcea5830bc18eacfd955c29b8f793aba8905dd8
64 lines
1.5 KiB
C
64 lines
1.5 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 "uart.h"
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#include "util.h"
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/* Hooks are described in special sections */
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extern const struct hook_data __hooks_freq_change[];
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extern const struct hook_data __hooks_freq_change_end[];
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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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/* Get the start and end pointers for the hook type */
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switch (type) {
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case HOOK_FREQ_CHANGE:
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start = __hooks_freq_change;
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end = __hooks_freq_change_end;
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break;
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default:
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/* Unhandled hook type */
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return EC_ERROR_UNKNOWN;
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}
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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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