1 /*
2  * OMAP2/3 Clock Management (CM) register definitions
3  *
4  * Copyright (C) 2007-2009 Texas Instruments, Inc.
5  * Copyright (C) 2007-2010 Nokia Corporation
6  * Paul Walmsley
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 version 2 as
10  * published by the Free Software Foundation.
11  *
12  * The CM hardware modules on the OMAP2/3 are quite similar to each
13  * other.  The CM modules/instances on OMAP4 are quite different, so
14  * they are handled in a separate file.
15  */
16 #ifndef __ARCH_ASM_MACH_OMAP2_CM2XXX_3XXX_H
17 #define __ARCH_ASM_MACH_OMAP2_CM2XXX_3XXX_H
18 
19 #include "cm.h"
20 
21 /*
22  * Module specific CM register offsets from CM_BASE + domain offset
23  * Use cm_{read,write}_mod_reg() with these registers.
24  * These register offsets generally appear in more than one PRCM submodule.
25  */
26 
27 /* Common between OMAP2 and OMAP3 */
28 
29 #define CM_FCLKEN					0x0000
30 #define CM_FCLKEN1					CM_FCLKEN
31 #define CM_CLKEN					CM_FCLKEN
32 #define CM_ICLKEN					0x0010
33 #define CM_ICLKEN1					CM_ICLKEN
34 #define CM_ICLKEN2					0x0014
35 #define CM_ICLKEN3					0x0018
36 #define CM_IDLEST					0x0020
37 #define CM_IDLEST1					CM_IDLEST
38 #define CM_IDLEST2					0x0024
39 #define OMAP2430_CM_IDLEST3				0x0028
40 #define CM_AUTOIDLE					0x0030
41 #define CM_AUTOIDLE1					CM_AUTOIDLE
42 #define CM_AUTOIDLE2					0x0034
43 #define CM_AUTOIDLE3					0x0038
44 #define CM_CLKSEL					0x0040
45 #define CM_CLKSEL1					CM_CLKSEL
46 #define CM_CLKSEL2					0x0044
47 #define OMAP2_CM_CLKSTCTRL				0x0048
48 
49 #ifndef __ASSEMBLER__
50 
51 #include <linux/io.h>
52 
53 static inline u32 omap2_cm_read_mod_reg(s16 module, u16 idx)
54 {
55 	return readl_relaxed(cm_base.va + module + idx);
56 }
57 
58 static inline void omap2_cm_write_mod_reg(u32 val, s16 module, u16 idx)
59 {
60 	writel_relaxed(val, cm_base.va + module + idx);
61 }
62 
63 /* Read-modify-write a register in a CM module. Caller must lock */
64 static inline u32 omap2_cm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module,
65 					    s16 idx)
66 {
67 	u32 v;
68 
69 	v = omap2_cm_read_mod_reg(module, idx);
70 	v &= ~mask;
71 	v |= bits;
72 	omap2_cm_write_mod_reg(v, module, idx);
73 
74 	return v;
75 }
76 
77 /* Read a CM register, AND it, and shift the result down to bit 0 */
78 static inline u32 omap2_cm_read_mod_bits_shift(s16 domain, s16 idx, u32 mask)
79 {
80 	u32 v;
81 
82 	v = omap2_cm_read_mod_reg(domain, idx);
83 	v &= mask;
84 	v >>= __ffs(mask);
85 
86 	return v;
87 }
88 
89 static inline u32 omap2_cm_set_mod_reg_bits(u32 bits, s16 module, s16 idx)
90 {
91 	return omap2_cm_rmw_mod_reg_bits(bits, bits, module, idx);
92 }
93 
94 static inline u32 omap2_cm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx)
95 {
96 	return omap2_cm_rmw_mod_reg_bits(bits, 0x0, module, idx);
97 }
98 
99 extern int omap2xxx_cm_apll54_enable(void);
100 extern void omap2xxx_cm_apll54_disable(void);
101 extern int omap2xxx_cm_apll96_enable(void);
102 extern void omap2xxx_cm_apll96_disable(void);
103 
104 #endif
105 
106 /* CM register bits shared between 24XX and 3430 */
107 
108 /* CM_CLKSEL_GFX */
109 #define OMAP_CLKSEL_GFX_SHIFT				0
110 #define OMAP_CLKSEL_GFX_MASK				(0x7 << 0)
111 #define OMAP_CLKSEL_GFX_WIDTH				3
112 
113 /* CM_ICLKEN_GFX */
114 #define OMAP_EN_GFX_SHIFT				0
115 #define OMAP_EN_GFX_MASK				(1 << 0)
116 
117 /* CM_IDLEST_GFX */
118 #define OMAP_ST_GFX_MASK				(1 << 0)
119 
120 #endif
121