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c0718df4 PW |
1 | /* |
2 | * OMAP3/4 Voltage Processor (VP) structure and macro definitions | |
3 | * | |
4 | * Copyright (C) 2007, 2010 Texas Instruments, Inc. | |
5 | * Rajendra Nayak <rnayak@ti.com> | |
6 | * Lesly A M <x0080970@ti.com> | |
7 | * Thara Gopinath <thara@ti.com> | |
8 | * | |
9 | * Copyright (C) 2008, 2011 Nokia Corporation | |
10 | * Kalle Jokiniemi | |
11 | * Paul Walmsley | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or | |
14 | * modify it under the terms of the GNU General Public License version | |
15 | * 2 as published by the Free Software Foundation. | |
16 | */ | |
17 | #ifndef __ARCH_ARM_MACH_OMAP2_VP_H | |
18 | #define __ARCH_ARM_MACH_OMAP2_VP_H | |
19 | ||
20 | #include <linux/kernel.h> | |
21 | ||
01f48d30 KH |
22 | struct voltagedomain; |
23 | ||
58aaa599 KH |
24 | /* |
25 | * Voltage Processor (VP) identifiers | |
26 | */ | |
27 | #define OMAP3_VP_VDD_MPU_ID 0 | |
28 | #define OMAP3_VP_VDD_CORE_ID 1 | |
29 | #define OMAP4_VP_VDD_CORE_ID 0 | |
30 | #define OMAP4_VP_VDD_IVA_ID 1 | |
31 | #define OMAP4_VP_VDD_MPU_ID 2 | |
32 | ||
c0718df4 PW |
33 | /* XXX document */ |
34 | #define VP_IDLE_TIMEOUT 200 | |
35 | #define VP_TRANXDONE_TIMEOUT 300 | |
36 | ||
58aaa599 KH |
37 | /** |
38 | * struct omap_vp_ops - per-VP operations | |
39 | * @check_txdone: check for VP transaction done | |
40 | * @clear_txdone: clear VP transaction done status | |
41 | */ | |
42 | struct omap_vp_ops { | |
43 | u32 (*check_txdone)(u8 vp_id); | |
44 | void (*clear_txdone)(u8 vp_id); | |
45 | }; | |
c0718df4 PW |
46 | |
47 | /** | |
b7ea803e | 48 | * struct omap_vp_common - register data common to all VDDs |
c0718df4 PW |
49 | * @vpconfig_errorgain_mask: ERRORGAIN bitmask in the PRM_VP*_CONFIG reg |
50 | * @vpconfig_initvoltage_mask: INITVOLTAGE bitmask in the PRM_VP*_CONFIG reg | |
51 | * @vpconfig_timeouten_mask: TIMEOUT bitmask in the PRM_VP*_CONFIG reg | |
52 | * @vpconfig_initvdd: INITVDD bitmask in the PRM_VP*_CONFIG reg | |
53 | * @vpconfig_forceupdate: FORCEUPDATE bitmask in the PRM_VP*_CONFIG reg | |
54 | * @vpconfig_vpenable: VPENABLE bitmask in the PRM_VP*_CONFIG reg | |
55 | * @vpconfig_erroroffset_shift: ERROROFFSET field shift in PRM_VP*_CONFIG reg | |
56 | * @vpconfig_errorgain_shift: ERRORGAIN field shift in PRM_VP*_CONFIG reg | |
57 | * @vpconfig_initvoltage_shift: INITVOLTAGE field shift in PRM_VP*_CONFIG reg | |
58 | * @vpconfig_stepmin_shift: VSTEPMIN field shift in the PRM_VP*_VSTEPMIN reg | |
59 | * @vpconfig_smpswaittimemin_shift: SMPSWAITTIMEMIN field shift in PRM_VP*_VSTEPMIN reg | |
60 | * @vpconfig_stepmax_shift: VSTEPMAX field shift in the PRM_VP*_VSTEPMAX reg | |
61 | * @vpconfig_smpswaittimemax_shift: SMPSWAITTIMEMAX field shift in PRM_VP*_VSTEPMAX reg | |
62 | * @vpconfig_vlimitto_vddmin_shift: VDDMIN field shift in PRM_VP*_VLIMITTO reg | |
63 | * @vpconfig_vlimitto_vddmax_shift: VDDMAX field shift in PRM_VP*_VLIMITTO reg | |
64 | * @vpconfig_vlimitto_timeout_shift: TIMEOUT field shift in PRM_VP*_VLIMITTO reg | |
65 | * | |
66 | * XXX It it not necessary to have both a mask and a shift for the same | |
67 | * bitfield - remove one | |
68 | * XXX Many of these fields are wrongly named -- e.g., vpconfig_smps* -- fix! | |
69 | */ | |
b7ea803e | 70 | struct omap_vp_common { |
c0718df4 PW |
71 | u32 vpconfig_errorgain_mask; |
72 | u32 vpconfig_initvoltage_mask; | |
73 | u32 vpconfig_timeouten; | |
74 | u32 vpconfig_initvdd; | |
75 | u32 vpconfig_forceupdate; | |
76 | u32 vpconfig_vpenable; | |
77 | u8 vpconfig_erroroffset_shift; | |
78 | u8 vpconfig_errorgain_shift; | |
79 | u8 vpconfig_initvoltage_shift; | |
80 | u8 vstepmin_stepmin_shift; | |
81 | u8 vstepmin_smpswaittimemin_shift; | |
82 | u8 vstepmax_stepmax_shift; | |
83 | u8 vstepmax_smpswaittimemax_shift; | |
84 | u8 vlimitto_vddmin_shift; | |
85 | u8 vlimitto_vddmax_shift; | |
86 | u8 vlimitto_timeout_shift; | |
c0718df4 | 87 | |
58aaa599 | 88 | const struct omap_vp_ops *ops; |
c0718df4 PW |
89 | }; |
90 | ||
91 | /** | |
b7ea803e KH |
92 | * struct omap_vp_instance - VP register offsets (per-VDD) |
93 | * @common: pointer to struct omap_vp_common * for this SoC | |
c0718df4 PW |
94 | * @vpconfig: PRM_VP*_CONFIG reg offset from PRM start |
95 | * @vstepmin: PRM_VP*_VSTEPMIN reg offset from PRM start | |
96 | * @vlimitto: PRM_VP*_VLIMITTO reg offset from PRM start | |
97 | * @vstatus: PRM_VP*_VSTATUS reg offset from PRM start | |
98 | * @voltage: PRM_VP*_VOLTAGE reg offset from PRM start | |
58aaa599 | 99 | * @id: Unique identifier for VP instance. |
b7ea803e | 100 | * @enabled: flag to keep track of whether vp is enabled or not |
c0718df4 PW |
101 | * |
102 | * XXX vp_common is probably not needed since it is per-SoC | |
103 | */ | |
b7ea803e KH |
104 | struct omap_vp_instance { |
105 | const struct omap_vp_common *common; | |
c0718df4 PW |
106 | u8 vpconfig; |
107 | u8 vstepmin; | |
108 | u8 vstepmax; | |
109 | u8 vlimitto; | |
110 | u8 vstatus; | |
111 | u8 voltage; | |
58aaa599 | 112 | u8 id; |
b7ea803e | 113 | bool enabled; |
c0718df4 PW |
114 | }; |
115 | ||
116 | /** | |
117 | * struct omap_vp_runtime_data - VP data populated at runtime by code | |
118 | * @vpconfig_erroroffset: value of ERROROFFSET bitfield in PRM_VP*_CONFIG | |
119 | * @vpconfig_errorgain: value of ERRORGAIN bitfield in PRM_VP*_CONFIG | |
120 | * @vstepmin_smpswaittimemin: value of SMPSWAITTIMEMIN bitfield in PRM_VP*_VSTEPMIN | |
121 | * @vstepmax_smpswaittimemax: value of SMPSWAITTIMEMAX bitfield in PRM_VP*_VSTEPMAX | |
122 | * @vlimitto_timeout: value of TIMEOUT bitfield in PRM_VP*_VLIMITTO | |
123 | * @vstepmin_stepmin: value of VSTEPMIN bitfield in PRM_VP*_VSTEPMIN | |
124 | * @vstepmax_stepmax: value of VSTEPMAX bitfield in PRM_VP*_VSTEPMAX | |
125 | * @vlimitto_vddmin: value of VDDMIN bitfield in PRM_VP*_VLIMITTO | |
126 | * @vlimitto_vddmax: value of VDDMAX bitfield in PRM_VP*_VLIMITTO | |
127 | * | |
128 | * XXX Is this structure really needed? Why not just program the | |
129 | * device directly? They are in PRM space, therefore in the WKUP | |
130 | * powerdomain, so register contents should not be lost in off-mode. | |
131 | * XXX Some of these fields are incorrectly named, e.g., vstep* | |
132 | */ | |
133 | struct omap_vp_runtime_data { | |
134 | u32 vpconfig_erroroffset; | |
135 | u16 vpconfig_errorgain; | |
136 | u16 vstepmin_smpswaittimemin; | |
137 | u16 vstepmax_smpswaittimemax; | |
138 | u16 vlimitto_timeout; | |
139 | u8 vstepmin_stepmin; | |
140 | u8 vstepmax_stepmax; | |
141 | u8 vlimitto_vddmin; | |
142 | u8 vlimitto_vddmax; | |
143 | }; | |
144 | ||
b7ea803e KH |
145 | extern struct omap_vp_instance omap3_vp_mpu; |
146 | extern struct omap_vp_instance omap3_vp_core; | |
c0718df4 | 147 | |
b7ea803e KH |
148 | extern struct omap_vp_instance omap4_vp_mpu; |
149 | extern struct omap_vp_instance omap4_vp_iva; | |
150 | extern struct omap_vp_instance omap4_vp_core; | |
c0718df4 | 151 | |
01f48d30 KH |
152 | void omap_vp_init(struct voltagedomain *voltdm); |
153 | void omap_vp_enable(struct voltagedomain *voltdm); | |
154 | void omap_vp_disable(struct voltagedomain *voltdm); | |
155 | unsigned long omap_vp_get_curr_volt(struct voltagedomain *voltdm); | |
156 | int omap_vp_forceupdate_scale(struct voltagedomain *voltdm, | |
157 | unsigned long target_volt); | |
158 | ||
c0718df4 | 159 | #endif |