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a61c1a63 MD |
1 | /* |
2 | * arch/sh/kernel/cpu/sh4a/hwblk-sh7722.c | |
3 | * | |
4 | * SH7722 hardware block support | |
5 | * | |
6 | * Copyright (C) 2009 Magnus Damm | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this program; if not, write to the Free Software | |
19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
20 | */ | |
21 | #include <linux/init.h> | |
22 | #include <linux/kernel.h> | |
23 | #include <linux/io.h> | |
24 | #include <asm/suspend.h> | |
25 | #include <asm/hwblk.h> | |
26 | #include <cpu/sh7722.h> | |
27 | ||
28 | /* SH7722 registers */ | |
29 | #define MSTPCR0 0xa4150030 | |
30 | #define MSTPCR1 0xa4150034 | |
31 | #define MSTPCR2 0xa4150038 | |
32 | ||
33 | /* SH7722 Power Domains */ | |
34 | enum { CORE_AREA, SUB_AREA, CORE_AREA_BM }; | |
35 | static struct hwblk_area sh7722_hwblk_area[] = { | |
36 | [CORE_AREA] = HWBLK_AREA(0, 0), | |
37 | [CORE_AREA_BM] = HWBLK_AREA(HWBLK_AREA_FLAG_PARENT, CORE_AREA), | |
38 | [SUB_AREA] = HWBLK_AREA(0, 0), | |
39 | }; | |
40 | ||
41 | /* Table mapping HWBLK to Module Stop Bit and Power Domain */ | |
42 | static struct hwblk sh7722_hwblk[HWBLK_NR] = { | |
43 | [HWBLK_TLB] = HWBLK(MSTPCR0, 31, CORE_AREA), | |
44 | [HWBLK_IC] = HWBLK(MSTPCR0, 30, CORE_AREA), | |
45 | [HWBLK_OC] = HWBLK(MSTPCR0, 29, CORE_AREA), | |
46 | [HWBLK_URAM] = HWBLK(MSTPCR0, 28, CORE_AREA), | |
47 | [HWBLK_XYMEM] = HWBLK(MSTPCR0, 26, CORE_AREA), | |
48 | [HWBLK_INTC] = HWBLK(MSTPCR0, 22, CORE_AREA), | |
49 | [HWBLK_DMAC] = HWBLK(MSTPCR0, 21, CORE_AREA_BM), | |
50 | [HWBLK_SHYWAY] = HWBLK(MSTPCR0, 20, CORE_AREA), | |
51 | [HWBLK_HUDI] = HWBLK(MSTPCR0, 19, CORE_AREA), | |
52 | [HWBLK_UBC] = HWBLK(MSTPCR0, 17, CORE_AREA), | |
53 | [HWBLK_TMU] = HWBLK(MSTPCR0, 15, CORE_AREA), | |
54 | [HWBLK_CMT] = HWBLK(MSTPCR0, 14, SUB_AREA), | |
55 | [HWBLK_RWDT] = HWBLK(MSTPCR0, 13, SUB_AREA), | |
56 | [HWBLK_FLCTL] = HWBLK(MSTPCR0, 10, CORE_AREA), | |
57 | [HWBLK_SCIF0] = HWBLK(MSTPCR0, 7, CORE_AREA), | |
58 | [HWBLK_SCIF1] = HWBLK(MSTPCR0, 6, CORE_AREA), | |
59 | [HWBLK_SCIF2] = HWBLK(MSTPCR0, 5, CORE_AREA), | |
60 | [HWBLK_SIO] = HWBLK(MSTPCR0, 3, CORE_AREA), | |
61 | [HWBLK_SIOF0] = HWBLK(MSTPCR0, 2, CORE_AREA), | |
62 | [HWBLK_SIOF1] = HWBLK(MSTPCR0, 1, CORE_AREA), | |
63 | ||
64 | [HWBLK_IIC] = HWBLK(MSTPCR1, 9, CORE_AREA), | |
65 | [HWBLK_RTC] = HWBLK(MSTPCR1, 8, SUB_AREA), | |
66 | ||
67 | [HWBLK_TPU] = HWBLK(MSTPCR2, 25, CORE_AREA), | |
68 | [HWBLK_IRDA] = HWBLK(MSTPCR2, 24, CORE_AREA), | |
69 | [HWBLK_SDHI] = HWBLK(MSTPCR2, 18, CORE_AREA), | |
70 | [HWBLK_SIM] = HWBLK(MSTPCR2, 16, CORE_AREA), | |
71 | [HWBLK_KEYSC] = HWBLK(MSTPCR2, 14, SUB_AREA), | |
72 | [HWBLK_TSIF] = HWBLK(MSTPCR2, 13, SUB_AREA), | |
73 | [HWBLK_USBF] = HWBLK(MSTPCR2, 11, CORE_AREA), | |
74 | [HWBLK_2DG] = HWBLK(MSTPCR2, 9, CORE_AREA_BM), | |
75 | [HWBLK_SIU] = HWBLK(MSTPCR2, 8, CORE_AREA), | |
76 | [HWBLK_JPU] = HWBLK(MSTPCR2, 6, CORE_AREA_BM), | |
77 | [HWBLK_VOU] = HWBLK(MSTPCR2, 5, CORE_AREA_BM), | |
78 | [HWBLK_BEU] = HWBLK(MSTPCR2, 4, CORE_AREA_BM), | |
79 | [HWBLK_CEU] = HWBLK(MSTPCR2, 3, CORE_AREA_BM), | |
80 | [HWBLK_VEU] = HWBLK(MSTPCR2, 2, CORE_AREA_BM), | |
81 | [HWBLK_VPU] = HWBLK(MSTPCR2, 1, CORE_AREA_BM), | |
82 | [HWBLK_LCDC] = HWBLK(MSTPCR2, 0, CORE_AREA_BM), | |
83 | }; | |
84 | ||
85 | static struct hwblk_info sh7722_hwblk_info = { | |
86 | .areas = sh7722_hwblk_area, | |
87 | .nr_areas = ARRAY_SIZE(sh7722_hwblk_area), | |
88 | .hwblks = sh7722_hwblk, | |
89 | .nr_hwblks = ARRAY_SIZE(sh7722_hwblk), | |
90 | }; | |
91 | ||
92 | int arch_hwblk_sleep_mode(void) | |
93 | { | |
0f8ee187 | 94 | if (!sh7722_hwblk_area[CORE_AREA].cnt[HWBLK_CNT_USAGE]) |
a61c1a63 MD |
95 | return SUSP_SH_STANDBY | SUSP_SH_SF; |
96 | ||
0f8ee187 | 97 | if (!sh7722_hwblk_area[CORE_AREA_BM].cnt[HWBLK_CNT_USAGE]) |
a61c1a63 MD |
98 | return SUSP_SH_SLEEP | SUSP_SH_SF; |
99 | ||
100 | return SUSP_SH_SLEEP; | |
101 | } | |
102 | ||
103 | int __init arch_hwblk_init(void) | |
104 | { | |
105 | return hwblk_register(&sh7722_hwblk_info); | |
106 | } |