1 // SPDX-License-Identifier: GPL-2.0 1
2 //
3 // Copyright (C) 2013 Samsung Electronics Co.,
4 // Tomasz Figa <t.figa@samsung.com>
5 // Copyright (C) 2008 Openmoko, Inc.
6 // Copyright (C) 2004-2008 Simtec Electronics
7 // Ben Dooks <ben@simtec.co.uk>
8 // http://armlinux.simtec.co.uk/
9 //
10 // Samsung common power management helper func
11
12 #include <linux/io.h>
13 #include <linux/kernel.h>
14
15 #include "pm-common.h"
16
17 /* helper functions to save and restore regist
18
19 /**
20 * s3c_pm_do_save() - save a set of registers
21 * @ptr: Pointer to an array of registers.
22 * @count: Size of the ptr array.
23 *
24 * Run through the list of registers given, sa
25 * array for later restoration when we wakeup.
26 */
27 void s3c_pm_do_save(struct sleep_save *ptr, in
28 {
29 for (; count > 0; count--, ptr++) {
30 ptr->val = readl_relaxed(ptr->
31 S3C_PMDBG("saved %p value %08l
32 }
33 }
34
35 /**
36 * s3c_pm_do_restore() - restore register valu
37 * @ptr: Pointer to an array of registers.
38 * @count: Size of the ptr array.
39 *
40 * Restore the register values saved from s3c_
41 *
42 * Note, we do not use S3C_PMDBG() in here, as
43 * restore the UARTs state yet
44 */
45
46 void s3c_pm_do_restore(const struct sleep_save
47 {
48 for (; count > 0; count--, ptr++) {
49 pr_debug("restore %p (restore
50 ptr->reg, ptr-
51
52 writel_relaxed(ptr->val, ptr->
53 }
54 }
55
56 /**
57 * s3c_pm_do_restore_core() - early restore re
58 * @ptr: Pointer to an array of registers.
59 * @count: Size of the ptr array.
60 *
61 * This is similar to s3c_pm_do_restore() exce
62 * side effects of the function in case regist
63 * to work has been restored.
64 *
65 * WARNING: Do not put any debug in here that
66 * peripherals, as things may be changing!
67 */
68
69 void s3c_pm_do_restore_core(const struct sleep
70 {
71 for (; count > 0; count--, ptr++)
72 writel_relaxed(ptr->val, ptr->
73 }
74
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.