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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 | ||
22 | /* XXX document */ | |
23 | #define VP_IDLE_TIMEOUT 200 | |
24 | #define VP_TRANXDONE_TIMEOUT 300 | |
25 | ||
26 | ||
27 | /** | |
28 | * struct omap_vp_common_data - register data common to all VDDs | |
29 | * @vpconfig_errorgain_mask: ERRORGAIN bitmask in the PRM_VP*_CONFIG reg | |
30 | * @vpconfig_initvoltage_mask: INITVOLTAGE bitmask in the PRM_VP*_CONFIG reg | |
31 | * @vpconfig_timeouten_mask: TIMEOUT bitmask in the PRM_VP*_CONFIG reg | |
32 | * @vpconfig_initvdd: INITVDD bitmask in the PRM_VP*_CONFIG reg | |
33 | * @vpconfig_forceupdate: FORCEUPDATE bitmask in the PRM_VP*_CONFIG reg | |
34 | * @vpconfig_vpenable: VPENABLE bitmask in the PRM_VP*_CONFIG reg | |
35 | * @vpconfig_erroroffset_shift: ERROROFFSET field shift in PRM_VP*_CONFIG reg | |
36 | * @vpconfig_errorgain_shift: ERRORGAIN field shift in PRM_VP*_CONFIG reg | |
37 | * @vpconfig_initvoltage_shift: INITVOLTAGE field shift in PRM_VP*_CONFIG reg | |
38 | * @vpconfig_stepmin_shift: VSTEPMIN field shift in the PRM_VP*_VSTEPMIN reg | |
39 | * @vpconfig_smpswaittimemin_shift: SMPSWAITTIMEMIN field shift in PRM_VP*_VSTEPMIN reg | |
40 | * @vpconfig_stepmax_shift: VSTEPMAX field shift in the PRM_VP*_VSTEPMAX reg | |
41 | * @vpconfig_smpswaittimemax_shift: SMPSWAITTIMEMAX field shift in PRM_VP*_VSTEPMAX reg | |
42 | * @vpconfig_vlimitto_vddmin_shift: VDDMIN field shift in PRM_VP*_VLIMITTO reg | |
43 | * @vpconfig_vlimitto_vddmax_shift: VDDMAX field shift in PRM_VP*_VLIMITTO reg | |
44 | * @vpconfig_vlimitto_timeout_shift: TIMEOUT field shift in PRM_VP*_VLIMITTO reg | |
45 | * | |
46 | * XXX It it not necessary to have both a mask and a shift for the same | |
47 | * bitfield - remove one | |
48 | * XXX Many of these fields are wrongly named -- e.g., vpconfig_smps* -- fix! | |
49 | */ | |
50 | struct omap_vp_common_data { | |
51 | u32 vpconfig_errorgain_mask; | |
52 | u32 vpconfig_initvoltage_mask; | |
53 | u32 vpconfig_timeouten; | |
54 | u32 vpconfig_initvdd; | |
55 | u32 vpconfig_forceupdate; | |
56 | u32 vpconfig_vpenable; | |
57 | u8 vpconfig_erroroffset_shift; | |
58 | u8 vpconfig_errorgain_shift; | |
59 | u8 vpconfig_initvoltage_shift; | |
60 | u8 vstepmin_stepmin_shift; | |
61 | u8 vstepmin_smpswaittimemin_shift; | |
62 | u8 vstepmax_stepmax_shift; | |
63 | u8 vstepmax_smpswaittimemax_shift; | |
64 | u8 vlimitto_vddmin_shift; | |
65 | u8 vlimitto_vddmax_shift; | |
66 | u8 vlimitto_timeout_shift; | |
67 | }; | |
68 | ||
69 | /** | |
70 | * struct omap_vp_prm_irqst_data - PRM_IRQSTATUS_MPU.VP_TRANXDONE_ST data | |
71 | * @prm_irqst_reg: reg offset for PRM_IRQSTATUS_MPU from top of PRM | |
72 | * @tranxdone_status: VP_TRANXDONE_ST bitmask in PRM_IRQSTATUS_MPU reg | |
73 | * | |
74 | * XXX prm_irqst_reg does not belong here | |
75 | * XXX Note that on OMAP3, VP_TRANXDONE interrupt may not work due to a | |
76 | * hardware bug | |
77 | * XXX This structure is probably not needed | |
78 | */ | |
79 | struct omap_vp_prm_irqst_data { | |
80 | u8 prm_irqst_reg; | |
81 | u32 tranxdone_status; | |
82 | }; | |
83 | ||
84 | /** | |
85 | * struct omap_vp_instance_data - VP register offsets (per-VDD) | |
86 | * @vp_common: pointer to struct omap_vp_common_data * for this SoC | |
87 | * @prm_irqst_data: pointer to struct omap_vp_prm_irqst_data for this VDD | |
88 | * @vpconfig: PRM_VP*_CONFIG reg offset from PRM start | |
89 | * @vstepmin: PRM_VP*_VSTEPMIN reg offset from PRM start | |
90 | * @vlimitto: PRM_VP*_VLIMITTO reg offset from PRM start | |
91 | * @vstatus: PRM_VP*_VSTATUS reg offset from PRM start | |
92 | * @voltage: PRM_VP*_VOLTAGE reg offset from PRM start | |
93 | * | |
94 | * XXX vp_common is probably not needed since it is per-SoC | |
95 | */ | |
96 | struct omap_vp_instance_data { | |
97 | const struct omap_vp_common_data *vp_common; | |
98 | const struct omap_vp_prm_irqst_data *prm_irqst_data; | |
99 | u8 vpconfig; | |
100 | u8 vstepmin; | |
101 | u8 vstepmax; | |
102 | u8 vlimitto; | |
103 | u8 vstatus; | |
104 | u8 voltage; | |
105 | }; | |
106 | ||
107 | /** | |
108 | * struct omap_vp_runtime_data - VP data populated at runtime by code | |
109 | * @vpconfig_erroroffset: value of ERROROFFSET bitfield in PRM_VP*_CONFIG | |
110 | * @vpconfig_errorgain: value of ERRORGAIN bitfield in PRM_VP*_CONFIG | |
111 | * @vstepmin_smpswaittimemin: value of SMPSWAITTIMEMIN bitfield in PRM_VP*_VSTEPMIN | |
112 | * @vstepmax_smpswaittimemax: value of SMPSWAITTIMEMAX bitfield in PRM_VP*_VSTEPMAX | |
113 | * @vlimitto_timeout: value of TIMEOUT bitfield in PRM_VP*_VLIMITTO | |
114 | * @vstepmin_stepmin: value of VSTEPMIN bitfield in PRM_VP*_VSTEPMIN | |
115 | * @vstepmax_stepmax: value of VSTEPMAX bitfield in PRM_VP*_VSTEPMAX | |
116 | * @vlimitto_vddmin: value of VDDMIN bitfield in PRM_VP*_VLIMITTO | |
117 | * @vlimitto_vddmax: value of VDDMAX bitfield in PRM_VP*_VLIMITTO | |
118 | * | |
119 | * XXX Is this structure really needed? Why not just program the | |
120 | * device directly? They are in PRM space, therefore in the WKUP | |
121 | * powerdomain, so register contents should not be lost in off-mode. | |
122 | * XXX Some of these fields are incorrectly named, e.g., vstep* | |
123 | */ | |
124 | struct omap_vp_runtime_data { | |
125 | u32 vpconfig_erroroffset; | |
126 | u16 vpconfig_errorgain; | |
127 | u16 vstepmin_smpswaittimemin; | |
128 | u16 vstepmax_smpswaittimemax; | |
129 | u16 vlimitto_timeout; | |
130 | u8 vstepmin_stepmin; | |
131 | u8 vstepmax_stepmax; | |
132 | u8 vlimitto_vddmin; | |
133 | u8 vlimitto_vddmax; | |
134 | }; | |
135 | ||
136 | extern struct omap_vp_instance_data omap3_vp1_data; | |
137 | extern struct omap_vp_instance_data omap3_vp2_data; | |
138 | ||
139 | extern struct omap_vp_instance_data omap4_vp_mpu_data; | |
140 | extern struct omap_vp_instance_data omap4_vp_iva_data; | |
141 | extern struct omap_vp_instance_data omap4_vp_core_data; | |
142 | ||
143 | #endif |