Commit | Line | Data |
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8459293c KM |
1 | /* |
2 | * r8a7740 power management support | |
3 | * | |
4 | * Copyright (C) 2012 Renesas Solutions Corp. | |
5 | * Copyright (C) 2012 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
6 | * | |
7 | * This file is subject to the terms and conditions of the GNU General Public | |
8 | * License. See the file "COPYING" in the main directory of this archive | |
9 | * for more details. | |
10 | */ | |
802a5639 | 11 | #include <linux/console.h> |
895d3b53 | 12 | #include <linux/suspend.h> |
8459293c | 13 | #include <mach/pm-rmobile.h> |
895d3b53 | 14 | #include <mach/common.h> |
8459293c KM |
15 | |
16 | #ifdef CONFIG_PM | |
17 | static int r8a7740_pd_a4s_suspend(void) | |
18 | { | |
19 | /* | |
20 | * The A4S domain contains the CPU core and therefore it should | |
21 | * only be turned off if the CPU is in use. | |
22 | */ | |
23 | return -EBUSY; | |
24 | } | |
25 | ||
802a5639 KM |
26 | static int r8a7740_pd_a3sp_suspend(void) |
27 | { | |
28 | /* | |
29 | * Serial consoles make use of SCIF hardware located in A3SP, | |
30 | * keep such power domain on if "no_console_suspend" is set. | |
31 | */ | |
32 | return console_suspend_enabled ? 0 : -EBUSY; | |
33 | } | |
34 | ||
7b567407 RW |
35 | static struct rmobile_pm_domain r8a7740_pm_domains[] = { |
36 | { | |
37 | .genpd.name = "A4S", | |
38 | .bit_shift = 10, | |
39 | .gov = &pm_domain_always_on_gov, | |
40 | .no_debug = true, | |
41 | .suspend = r8a7740_pd_a4s_suspend, | |
42 | }, | |
43 | { | |
44 | .genpd.name = "A3SP", | |
45 | .bit_shift = 11, | |
46 | .gov = &pm_domain_always_on_gov, | |
47 | .no_debug = true, | |
48 | .suspend = r8a7740_pd_a3sp_suspend, | |
49 | }, | |
50 | { | |
51 | .genpd.name = "A4LC", | |
52 | .bit_shift = 1, | |
53 | }, | |
802a5639 KM |
54 | }; |
55 | ||
7b567407 RW |
56 | void __init r8a7740_init_pm_domains(void) |
57 | { | |
58 | rmobile_init_domains(r8a7740_pm_domains, ARRAY_SIZE(r8a7740_pm_domains)); | |
59 | pm_genpd_add_subdomain_names("A4S", "A3SP"); | |
60 | } | |
a330ce3c | 61 | |
8459293c | 62 | #endif /* CONFIG_PM */ |
895d3b53 BH |
63 | |
64 | #ifdef CONFIG_SUSPEND | |
65 | static int r8a7740_enter_suspend(suspend_state_t suspend_state) | |
66 | { | |
67 | cpu_do_idle(); | |
68 | return 0; | |
69 | } | |
70 | ||
71 | static void r8a7740_suspend_init(void) | |
72 | { | |
73 | shmobile_suspend_ops.enter = r8a7740_enter_suspend; | |
74 | } | |
75 | #else | |
76 | static void r8a7740_suspend_init(void) {} | |
77 | #endif | |
78 | ||
79 | void __init r8a7740_pm_init(void) | |
80 | { | |
81 | r8a7740_suspend_init(); | |
82 | } |