mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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3f4899b6b0
Before this change drivers had no way of knowing that a frequency change was coming. This could cause problems for some drivers (like i2c) that need to make sure that a transaction isn't happening while a frequency change is happening. The PRE_FREQ_CHANGE archiecture is very simple here and we don't allow any way to cancel it. At the moment, we guarantee: - We won't call PRE_FREQ_CHANGE with interrupts disabled, so acquiring locks / sleeping is OK. - We'll call the actual HOOK_FREQ_CHANGE after the PRE_FREQ_CHANGE. PRE_FREQ_CHANGE and HOOK_FREQ_CHANGE should not use deferred function calls. BRANCH=pit BUG=chrome-os-partner:22093 TEST=With all patches together: - on AP: suspend_stress_test - on EC: battery 10000 50 Change-Id: I2731a3e85d41e749fa571fdb74b5c9b12043cda6 Signed-off-by: Doug Anderson <dianders@chromium.org> Previous-Reviewed-on: https://chromium-review.googlesource.com/167101 (cherry picked from commit d84c0dbbf7c5a72917a820e292ecfdfa698d0fb9) Reviewed-on: https://chromium-review.googlesource.com/167148 Reviewed-by: Randall Spangler <rspangler@chromium.org>
68 lines
2.6 KiB
C
68 lines
2.6 KiB
C
/* Copyright (c) 2013 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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* Symbols from linker definitions
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*/
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#ifndef __CROS_EC_LINK_DEFS_H
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#define __CROS_EC_LINK_DEFS_H
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#include "console.h"
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#include "hooks.h"
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#include "host_command.h"
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#include "task.h"
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/* Console commands */
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extern const struct console_command __cmds[];
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extern const struct console_command __cmds_end[];
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/* Hooks */
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extern const struct hook_data __hooks_init[];
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extern const struct hook_data __hooks_init_end[];
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extern const struct hook_data __hooks_pre_freq_change[];
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extern const struct hook_data __hooks_pre_freq_change_end[];
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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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extern const struct hook_data __hooks_sysjump[];
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extern const struct hook_data __hooks_sysjump_end[];
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extern const struct hook_data __hooks_chipset_pre_init[];
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extern const struct hook_data __hooks_chipset_pre_init_end[];
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extern const struct hook_data __hooks_chipset_startup[];
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extern const struct hook_data __hooks_chipset_startup_end[];
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extern const struct hook_data __hooks_chipset_resume[];
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extern const struct hook_data __hooks_chipset_resume_end[];
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extern const struct hook_data __hooks_chipset_suspend[];
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extern const struct hook_data __hooks_chipset_suspend_end[];
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extern const struct hook_data __hooks_chipset_shutdown[];
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extern const struct hook_data __hooks_chipset_shutdown_end[];
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extern const struct hook_data __hooks_ac_change[];
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extern const struct hook_data __hooks_ac_change_end[];
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extern const struct hook_data __hooks_lid_change[];
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extern const struct hook_data __hooks_lid_change_end[];
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extern const struct hook_data __hooks_pwrbtn_change[];
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extern const struct hook_data __hooks_pwrbtn_change_end[];
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extern const struct hook_data __hooks_charge_state_change[];
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extern const struct hook_data __hooks_charge_state_change_end[];
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extern const struct hook_data __hooks_tick[];
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extern const struct hook_data __hooks_tick_end[];
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extern const struct hook_data __hooks_second[];
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extern const struct hook_data __hooks_second_end[];
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/* Deferrable functions */
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extern const struct deferred_data __deferred_funcs[];
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extern const struct deferred_data __deferred_funcs_end[];
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/* Host commands */
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extern const struct host_command __hcmds[];
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extern const struct host_command __hcmds_end[];
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/* IRQs (interrupt handlers) */
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extern const struct irq_priority __irqprio[];
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extern const struct irq_priority __irqprio_end[];
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/* Shared memory buffer. Use via shared_mem.h interface. */
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extern uint8_t __shared_mem_buf[];
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#endif /* __CROS_EC_LINK_DEFS_H */
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