1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* |
3 | * OMAP3/4 Voltage Processor (VP) structure and macro definitions |
4 | * |
5 | * Copyright (C) 2007, 2010 Texas Instruments, Inc. |
6 | * Rajendra Nayak <rnayak@ti.com> |
7 | * Lesly A M <x0080970@ti.com> |
8 | * Thara Gopinath <thara@ti.com> |
9 | * |
10 | * Copyright (C) 2008, 2011 Nokia Corporation |
11 | * Kalle Jokiniemi |
12 | * Paul Walmsley |
13 | */ |
14 | #ifndef __ARCH_ARM_MACH_OMAP2_VP_H |
15 | #define __ARCH_ARM_MACH_OMAP2_VP_H |
16 | |
17 | #include <linux/kernel.h> |
18 | |
19 | struct voltagedomain; |
20 | |
21 | /* XXX document */ |
22 | #define VP_IDLE_TIMEOUT 200 |
23 | #define VP_TRANXDONE_TIMEOUT 300 |
24 | |
25 | /** |
26 | * struct omap_vp_ops - per-VP operations |
27 | * @check_txdone: check for VP transaction done |
28 | * @clear_txdone: clear VP transaction done status |
29 | */ |
30 | struct omap_vp_ops { |
31 | u32 (*check_txdone)(u8 vp_id); |
32 | void (*clear_txdone)(u8 vp_id); |
33 | }; |
34 | |
35 | /** |
36 | * struct omap_vp_common - register data common to all VDDs |
37 | * @vpconfig_erroroffset_mask: ERROROFFSET bitmask in the PRM_VP*_CONFIG reg |
38 | * @vpconfig_errorgain_mask: ERRORGAIN bitmask in the PRM_VP*_CONFIG reg |
39 | * @vpconfig_initvoltage_mask: INITVOLTAGE bitmask in the PRM_VP*_CONFIG reg |
40 | * @vpconfig_timeouten: TIMEOUT bitmask in the PRM_VP*_CONFIG reg |
41 | * @vpconfig_initvdd: INITVDD bitmask in the PRM_VP*_CONFIG reg |
42 | * @vpconfig_forceupdate: FORCEUPDATE bitmask in the PRM_VP*_CONFIG reg |
43 | * @vpconfig_vpenable: VPENABLE bitmask in the PRM_VP*_CONFIG reg |
44 | * @vpconfig_erroroffset_shift: ERROROFFSET field shift in PRM_VP*_CONFIG reg |
45 | * @vpconfig_errorgain_shift: ERRORGAIN field shift in PRM_VP*_CONFIG reg |
46 | * @vpconfig_initvoltage_shift: INITVOLTAGE field shift in PRM_VP*_CONFIG reg |
47 | * @vstepmin_stepmin_shift: VSTEPMIN field shift in the PRM_VP*_VSTEPMIN reg |
48 | * @vstepmin_smpswaittimemin_shift: SMPSWAITTIMEMIN field shift in PRM_VP*_VSTEPMIN reg |
49 | * @vstepmax_stepmax_shift: VSTEPMAX field shift in the PRM_VP*_VSTEPMAX reg |
50 | * @vstepmax_smpswaittimemax_shift: SMPSWAITTIMEMAX field shift in PRM_VP*_VSTEPMAX reg |
51 | * @vlimitto_vddmin_shift: VDDMIN field shift in PRM_VP*_VLIMITTO reg |
52 | * @vlimitto_vddmax_shift: VDDMAX field shift in PRM_VP*_VLIMITTO reg |
53 | * @vlimitto_timeout_shift: TIMEOUT field shift in PRM_VP*_VLIMITTO reg |
54 | * @vpvoltage_mask: VPVOLTAGE field mask in PRM_VP*_VOLTAGE reg |
55 | */ |
56 | struct omap_vp_common { |
57 | u32 vpconfig_erroroffset_mask; |
58 | u32 vpconfig_errorgain_mask; |
59 | u32 vpconfig_initvoltage_mask; |
60 | u8 vpconfig_timeouten; |
61 | u8 vpconfig_initvdd; |
62 | u8 vpconfig_forceupdate; |
63 | u8 vpconfig_vpenable; |
64 | u8 vstepmin_stepmin_shift; |
65 | u8 vstepmin_smpswaittimemin_shift; |
66 | u8 vstepmax_stepmax_shift; |
67 | u8 vstepmax_smpswaittimemax_shift; |
68 | u8 vlimitto_vddmin_shift; |
69 | u8 vlimitto_vddmax_shift; |
70 | u8 vlimitto_timeout_shift; |
71 | u8 vpvoltage_mask; |
72 | |
73 | const struct omap_vp_ops *ops; |
74 | }; |
75 | |
76 | /** |
77 | * struct omap_vp_instance - VP register offsets (per-VDD) |
78 | * @common: pointer to struct omap_vp_common * for this SoC |
79 | * @vpconfig: PRM_VP*_CONFIG reg offset from PRM start |
80 | * @vstepmin: PRM_VP*_VSTEPMIN reg offset from PRM start |
81 | * @vlimitto: PRM_VP*_VLIMITTO reg offset from PRM start |
82 | * @vstatus: PRM_VP*_VSTATUS reg offset from PRM start |
83 | * @voltage: PRM_VP*_VOLTAGE reg offset from PRM start |
84 | * @id: Unique identifier for VP instance. |
85 | * @enabled: flag to keep track of whether vp is enabled or not |
86 | * |
87 | * XXX vp_common is probably not needed since it is per-SoC |
88 | */ |
89 | struct omap_vp_instance { |
90 | const struct omap_vp_common *common; |
91 | u8 vpconfig; |
92 | u8 vstepmin; |
93 | u8 vstepmax; |
94 | u8 vlimitto; |
95 | u8 vstatus; |
96 | u8 voltage; |
97 | u8 id; |
98 | bool enabled; |
99 | }; |
100 | |
101 | extern struct omap_vp_instance omap3_vp_mpu; |
102 | extern struct omap_vp_instance omap3_vp_core; |
103 | |
104 | extern struct omap_vp_instance omap4_vp_mpu; |
105 | extern struct omap_vp_instance omap4_vp_iva; |
106 | extern struct omap_vp_instance omap4_vp_core; |
107 | |
108 | extern struct omap_vp_param omap3_mpu_vp_data; |
109 | extern struct omap_vp_param omap3_core_vp_data; |
110 | |
111 | extern struct omap_vp_param omap4_mpu_vp_data; |
112 | extern struct omap_vp_param omap4_iva_vp_data; |
113 | extern struct omap_vp_param omap4_core_vp_data; |
114 | |
115 | void omap_vp_init(struct voltagedomain *voltdm); |
116 | void omap_vp_enable(struct voltagedomain *voltdm); |
117 | void omap_vp_disable(struct voltagedomain *voltdm); |
118 | int omap_vp_forceupdate_scale(struct voltagedomain *voltdm, |
119 | unsigned long target_volt); |
120 | int omap_vp_update_errorgain(struct voltagedomain *voltdm, |
121 | unsigned long target_volt); |
122 | |
123 | #endif |
124 | |