diff options
Diffstat (limited to 'nuttx/drivers/power/pm_register.c')
-rw-r--r-- | nuttx/drivers/power/pm_register.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/nuttx/drivers/power/pm_register.c b/nuttx/drivers/power/pm_register.c new file mode 100644 index 000000000..19f94cb02 --- /dev/null +++ b/nuttx/drivers/power/pm_register.c @@ -0,0 +1,112 @@ +/**************************************************************************** + * drivers/power/pm_register.c + * + * Copyright (C) 2011-2012 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <queue.h> +#include <assert.h> + +#include <nuttx/power/pm.h> + +#include "pm_internal.h" + +#ifdef CONFIG_PM + +/**************************************************************************** + * Pre-processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: pm_register + * + * Description: + * This function is called by a device driver in order to register to + * receive power management event callbacks. + * + * Input parameters: + * callbacks - An instance of struct pm_callback_s providing the driver + * callback functions. + * + * Returned value: + * Zero (OK) on success; otherwise a negater errno value is returned. + * + ****************************************************************************/ + +int pm_register(FAR struct pm_callback_s *callbacks) +{ + int ret; + + DEBUGASSERT(callbacks); + + /* Add the new entry to the end of the list of registered callbacks */ + + ret = pm_lock(); + if (ret == OK) + { + sq_addlast(&callbacks->entry, &g_pmglobals.registry); + pm_unlock(); + } + return ret; +} + +#endif /* CONFIG_PM */
\ No newline at end of file |