1 /*
2  * Common powerdomain framework functions
3  *
4  * Copyright (C) 2010-2011 Texas Instruments, Inc.
5  * Copyright (C) 2010 Nokia Corporation
6  *
7  * Derived from mach-omap2/powerdomain.c written by Paul Walmsley
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as
11  * published by the Free Software Foundation.
12  */
13 
14 #include <linux/errno.h>
15 #include <linux/kernel.h>
16 #include <linux/bug.h>
17 #include "pm.h"
18 #include "cm.h"
19 #include "cm-regbits-34xx.h"
20 #include "prm-regbits-34xx.h"
21 #include "prm-regbits-44xx.h"
22 
23 /*
24  * OMAP3 and OMAP4 specific register bit initialisations
25  * Notice that the names here are not according to each power
26  * domain but the bit mapping used applies to all of them
27  */
28 /* OMAP3 and OMAP4 Memory Onstate Masks (common across all power domains) */
29 #define OMAP_MEM0_ONSTATE_MASK OMAP3430_SHAREDL1CACHEFLATONSTATE_MASK
30 #define OMAP_MEM1_ONSTATE_MASK OMAP3430_L1FLATMEMONSTATE_MASK
31 #define OMAP_MEM2_ONSTATE_MASK OMAP3430_SHAREDL2CACHEFLATONSTATE_MASK
32 #define OMAP_MEM3_ONSTATE_MASK OMAP3430_L2FLATMEMONSTATE_MASK
33 #define OMAP_MEM4_ONSTATE_MASK OMAP4430_OCP_NRET_BANK_ONSTATE_MASK
34 
35 /* OMAP3 and OMAP4 Memory Retstate Masks (common across all power domains) */
36 #define OMAP_MEM0_RETSTATE_MASK OMAP3430_SHAREDL1CACHEFLATRETSTATE_MASK
37 #define OMAP_MEM1_RETSTATE_MASK OMAP3430_L1FLATMEMRETSTATE_MASK
38 #define OMAP_MEM2_RETSTATE_MASK OMAP3430_SHAREDL2CACHEFLATRETSTATE_MASK
39 #define OMAP_MEM3_RETSTATE_MASK OMAP3430_L2FLATMEMRETSTATE_MASK
40 #define OMAP_MEM4_RETSTATE_MASK OMAP4430_OCP_NRET_BANK_RETSTATE_MASK
41 
42 /* OMAP3 and OMAP4 Memory Status bits */
43 #define OMAP_MEM0_STATEST_MASK OMAP3430_SHAREDL1CACHEFLATSTATEST_MASK
44 #define OMAP_MEM1_STATEST_MASK OMAP3430_L1FLATMEMSTATEST_MASK
45 #define OMAP_MEM2_STATEST_MASK OMAP3430_SHAREDL2CACHEFLATSTATEST_MASK
46 #define OMAP_MEM3_STATEST_MASK OMAP3430_L2FLATMEMSTATEST_MASK
47 #define OMAP_MEM4_STATEST_MASK OMAP4430_OCP_NRET_BANK_STATEST_MASK
48 
49 /* Common Internal functions used across OMAP rev's*/
50 u32 omap2_pwrdm_get_mem_bank_onstate_mask(u8 bank)
51 {
52 	switch (bank) {
53 	case 0:
54 		return OMAP_MEM0_ONSTATE_MASK;
55 	case 1:
56 		return OMAP_MEM1_ONSTATE_MASK;
57 	case 2:
58 		return OMAP_MEM2_ONSTATE_MASK;
59 	case 3:
60 		return OMAP_MEM3_ONSTATE_MASK;
61 	case 4:
62 		return OMAP_MEM4_ONSTATE_MASK;
63 	default:
64 		WARN_ON(1); /* should never happen */
65 		return -EEXIST;
66 	}
67 	return 0;
68 }
69 
70 u32 omap2_pwrdm_get_mem_bank_retst_mask(u8 bank)
71 {
72 	switch (bank) {
73 	case 0:
74 		return OMAP_MEM0_RETSTATE_MASK;
75 	case 1:
76 		return OMAP_MEM1_RETSTATE_MASK;
77 	case 2:
78 		return OMAP_MEM2_RETSTATE_MASK;
79 	case 3:
80 		return OMAP_MEM3_RETSTATE_MASK;
81 	case 4:
82 		return OMAP_MEM4_RETSTATE_MASK;
83 	default:
84 		WARN_ON(1); /* should never happen */
85 		return -EEXIST;
86 	}
87 	return 0;
88 }
89 
90 u32 omap2_pwrdm_get_mem_bank_stst_mask(u8 bank)
91 {
92 	switch (bank) {
93 	case 0:
94 		return OMAP_MEM0_STATEST_MASK;
95 	case 1:
96 		return OMAP_MEM1_STATEST_MASK;
97 	case 2:
98 		return OMAP_MEM2_STATEST_MASK;
99 	case 3:
100 		return OMAP_MEM3_STATEST_MASK;
101 	case 4:
102 		return OMAP_MEM4_STATEST_MASK;
103 	default:
104 		WARN_ON(1); /* should never happen */
105 		return -EEXIST;
106 	}
107 	return 0;
108 }
109 
110