1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * OMAP2/3/4 Power/Reset Management (PRM) bitfield definitions
4  *
5  * Copyright (C) 2007-2009, 2012 Texas Instruments, Inc.
6  * Copyright (C) 2010 Nokia Corporation
7  *
8  * Paul Walmsley
9  */
10 #ifndef __ARCH_ARM_MACH_OMAP2_PRM_H
11 #define __ARCH_ARM_MACH_OMAP2_PRM_H
12 
13 #include "prcm-common.h"
14 
15 # ifndef __ASSEMBLER__
16 extern struct omap_domain_base prm_base;
17 extern u16 prm_features;
18 extern void omap2_set_globals_prm(void __iomem *prm);
19 int omap_prcm_init(void);
20 int omap2_prm_base_init(void);
21 int omap2_prcm_base_init(void);
22 # endif
23 
24 /*
25  * prm_features flag values
26  *
27  * PRM_HAS_IO_WAKEUP: has IO wakeup capability
28  * PRM_HAS_VOLTAGE: has voltage domains
29  */
30 #define PRM_HAS_IO_WAKEUP	BIT(0)
31 #define PRM_HAS_VOLTAGE		BIT(1)
32 
33 /*
34  * MAX_MODULE_SOFTRESET_WAIT: Maximum microseconds to wait for OMAP
35  * module to softreset
36  */
37 #define MAX_MODULE_SOFTRESET_WAIT		10000
38 
39 /*
40  * MAX_MODULE_HARDRESET_WAIT: Maximum microseconds to wait for an OMAP
41  * submodule to exit hardreset
42  */
43 #define MAX_MODULE_HARDRESET_WAIT		10000
44 
45 /*
46  * Register bitfields
47  */
48 
49 /*
50  * 24XX: PM_PWSTST_CORE, PM_PWSTST_GFX, PM_PWSTST_MPU, PM_PWSTST_DSP
51  *
52  * 2430: PM_PWSTST_MDM
53  *
54  * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX,
55  *	 PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU,
56  *	 PM_PWSTST_NEON
57  */
58 #define OMAP_INTRANSITION_MASK				(1 << 20)
59 
60 
61 /*
62  * 24XX: PM_PWSTST_GFX, PM_PWSTST_DSP
63  *
64  * 2430: PM_PWSTST_MDM
65  *
66  * 3430: PM_PWSTST_IVA2, PM_PWSTST_MPU, PM_PWSTST_CORE, PM_PWSTST_GFX,
67  *	 PM_PWSTST_DSS, PM_PWSTST_CAM, PM_PWSTST_PER, PM_PWSTST_EMU,
68  *	 PM_PWSTST_NEON
69  */
70 #define OMAP_POWERSTATEST_SHIFT				0
71 #define OMAP_POWERSTATEST_MASK				(0x3 << 0)
72 
73 /*
74  * 24XX: PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE, PM_PWSTCTRL_GFX,
75  *       PM_PWSTCTRL_DSP, PM_PWSTST_MPU
76  *
77  * 2430: PM_PWSTCTRL_MDM shared bits
78  *
79  * 3430: PM_PWSTCTRL_IVA2, PM_PWSTCTRL_MPU, PM_PWSTCTRL_CORE,
80  *	 PM_PWSTCTRL_GFX, PM_PWSTCTRL_DSS, PM_PWSTCTRL_CAM, PM_PWSTCTRL_PER,
81  *	 PM_PWSTCTRL_NEON shared bits
82  */
83 #define OMAP_POWERSTATE_SHIFT				0
84 #define OMAP_POWERSTATE_MASK				(0x3 << 0)
85 
86 /*
87  * Standardized OMAP reset source bits
88  *
89  * To the extent these happen to match the hardware register bit
90  * shifts, it's purely coincidental.  Used by omap-wdt.c.
91  * OMAP_UNKNOWN_RST_SRC_ID_SHIFT is a special value, used whenever
92  * there are any bits remaining in the global PRM_RSTST register that
93  * haven't been identified, or when the PRM code for the current SoC
94  * doesn't know how to interpret the register.
95  */
96 #define OMAP_GLOBAL_COLD_RST_SRC_ID_SHIFT			0
97 #define OMAP_GLOBAL_WARM_RST_SRC_ID_SHIFT			1
98 #define OMAP_SECU_VIOL_RST_SRC_ID_SHIFT				2
99 #define OMAP_MPU_WD_RST_SRC_ID_SHIFT				3
100 #define OMAP_SECU_WD_RST_SRC_ID_SHIFT				4
101 #define OMAP_EXTWARM_RST_SRC_ID_SHIFT				5
102 #define OMAP_VDD_MPU_VM_RST_SRC_ID_SHIFT			6
103 #define OMAP_VDD_IVA_VM_RST_SRC_ID_SHIFT			7
104 #define OMAP_VDD_CORE_VM_RST_SRC_ID_SHIFT			8
105 #define OMAP_ICEPICK_RST_SRC_ID_SHIFT				9
106 #define OMAP_ICECRUSHER_RST_SRC_ID_SHIFT			10
107 #define OMAP_C2C_RST_SRC_ID_SHIFT				11
108 #define OMAP_UNKNOWN_RST_SRC_ID_SHIFT				12
109 
110 #ifndef __ASSEMBLER__
111 
112 /**
113  * struct prm_reset_src_map - map register bitshifts to standard bitshifts
114  * @reg_shift: bitshift in the PRM reset source register
115  * @std_shift: bitshift equivalent in the standard reset source list
116  *
117  * The fields are signed because -1 is used as a terminator.
118  */
119 struct prm_reset_src_map {
120 	s8 reg_shift;
121 	s8 std_shift;
122 };
123 
124 /**
125  * struct prm_ll_data - fn ptrs to per-SoC PRM function implementations
126  * @read_reset_sources: ptr to the SoC PRM-specific get_reset_source impl
127  * @was_any_context_lost_old: ptr to the SoC PRM context loss test fn
128  * @clear_context_loss_flags_old: ptr to the SoC PRM context loss flag clear fn
129  * @late_init: ptr to the late init function
130  * @assert_hardreset: ptr to the SoC PRM hardreset assert impl
131  * @deassert_hardreset: ptr to the SoC PRM hardreset deassert impl
132  *
133  * XXX @was_any_context_lost_old and @clear_context_loss_flags_old are
134  * deprecated.
135  */
136 struct prm_ll_data {
137 	u32 (*read_reset_sources)(void);
138 	bool (*was_any_context_lost_old)(u8 part, s16 inst, u16 idx);
139 	void (*clear_context_loss_flags_old)(u8 part, s16 inst, u16 idx);
140 	int (*late_init)(void);
141 	int (*assert_hardreset)(u8 shift, u8 part, s16 prm_mod, u16 offset);
142 	int (*deassert_hardreset)(u8 shift, u8 st_shift, u8 part, s16 prm_mod,
143 				  u16 offset, u16 st_offset);
144 	int (*is_hardreset_asserted)(u8 shift, u8 part, s16 prm_mod,
145 				     u16 offset);
146 	void (*reset_system)(void);
147 	int (*clear_mod_irqs)(s16 module, u8 regs, u32 wkst_mask);
148 	u32 (*vp_check_txdone)(u8 vp_id);
149 	void (*vp_clear_txdone)(u8 vp_id);
150 };
151 
152 extern int prm_register(struct prm_ll_data *pld);
153 extern int prm_unregister(struct prm_ll_data *pld);
154 
155 int omap_prm_assert_hardreset(u8 shift, u8 part, s16 prm_mod, u16 offset);
156 int omap_prm_deassert_hardreset(u8 shift, u8 st_shift, u8 part, s16 prm_mod,
157 				u16 offset, u16 st_offset);
158 int omap_prm_is_hardreset_asserted(u8 shift, u8 part, s16 prm_mod, u16 offset);
159 extern u32 prm_read_reset_sources(void);
160 extern bool prm_was_any_context_lost_old(u8 part, s16 inst, u16 idx);
161 extern void prm_clear_context_loss_flags_old(u8 part, s16 inst, u16 idx);
162 void omap_prm_reset_system(void);
163 
164 void omap_prm_reconfigure_io_chain(void);
165 int omap_prm_clear_mod_irqs(s16 module, u8 regs, u32 wkst_mask);
166 
167 /*
168  * Voltage Processor (VP) identifiers
169  */
170 #define OMAP3_VP_VDD_MPU_ID	0
171 #define OMAP3_VP_VDD_CORE_ID	1
172 #define OMAP4_VP_VDD_CORE_ID	0
173 #define OMAP4_VP_VDD_IVA_ID	1
174 #define OMAP4_VP_VDD_MPU_ID	2
175 
176 u32 omap_prm_vp_check_txdone(u8 vp_id);
177 void omap_prm_vp_clear_txdone(u8 vp_id);
178 
179 #endif
180 
181 
182 #endif
183