Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
8bd22949 KH |
2 | /* |
3 | * OMAP Power Management debug routines | |
4 | * | |
5 | * Copyright (C) 2005 Texas Instruments, Inc. | |
6 | * Copyright (C) 2006-2008 Nokia Corporation | |
7 | * | |
8 | * Written by: | |
9 | * Richard Woodruff <r-woodruff2@ti.com> | |
10 | * Tony Lindgren | |
11 | * Juha Yrjola | |
12 | * Amit Kucheria <amit.kucheria@nokia.com> | |
13 | * Igor Stoppa <igor.stoppa@nokia.com> | |
14 | * Jouni Hogander | |
15 | * | |
16 | * Based on pm.c for omap2 | |
8bd22949 KH |
17 | */ |
18 | ||
19 | #include <linux/kernel.h> | |
331b93f4 | 20 | #include <linux/sched.h> |
e6017571 | 21 | #include <linux/sched/clock.h> |
8bd22949 KH |
22 | #include <linux/clk.h> |
23 | #include <linux/err.h> | |
24 | #include <linux/io.h> | |
68d4778c | 25 | #include <linux/module.h> |
5a0e3ad6 | 26 | #include <linux/slab.h> |
8bd22949 | 27 | |
a135eaae | 28 | #include "clock.h" |
72e06d08 | 29 | #include "powerdomain.h" |
1540f214 | 30 | #include "clockdomain.h" |
8bd22949 | 31 | |
e4c060db | 32 | #include "soc.h" |
59fb659b PW |
33 | #include "cm2xxx_3xxx.h" |
34 | #include "prm2xxx_3xxx.h" | |
8bd22949 KH |
35 | #include "pm.h" |
36 | ||
331b93f4 PDS |
37 | #ifdef CONFIG_DEBUG_FS |
38 | #include <linux/debugfs.h> | |
39 | #include <linux/seq_file.h> | |
40 | ||
331b93f4 PDS |
41 | static int pm_dbg_init_done; |
42 | ||
c8fb13d0 | 43 | static int pm_dbg_init(void); |
6b34f9d4 | 44 | |
2354eb5a | 45 | static const char pwrdm_state_names[][PWRDM_MAX_PWRSTS] = { |
331b93f4 PDS |
46 | "OFF", |
47 | "RET", | |
48 | "INA", | |
49 | "ON" | |
50 | }; | |
51 | ||
52 | void pm_dbg_update_time(struct powerdomain *pwrdm, int prev) | |
53 | { | |
54 | s64 t; | |
55 | ||
56 | if (!pm_dbg_init_done) | |
57 | return ; | |
58 | ||
59 | /* Update timer for previous state */ | |
60 | t = sched_clock(); | |
61 | ||
62 | pwrdm->state_timer[prev] += t - pwrdm->timer; | |
63 | ||
64 | pwrdm->timer = t; | |
65 | } | |
66 | ||
67 | static int clkdm_dbg_show_counter(struct clockdomain *clkdm, void *user) | |
68 | { | |
69 | struct seq_file *s = (struct seq_file *)user; | |
70 | ||
71 | if (strcmp(clkdm->name, "emu_clkdm") == 0 || | |
72 | strcmp(clkdm->name, "wkup_clkdm") == 0 || | |
73 | strncmp(clkdm->name, "dpll", 4) == 0) | |
74 | return 0; | |
75 | ||
92493870 PW |
76 | seq_printf(s, "%s->%s (%d)\n", clkdm->name, clkdm->pwrdm.ptr->name, |
77 | clkdm->usecount); | |
331b93f4 PDS |
78 | |
79 | return 0; | |
80 | } | |
81 | ||
82 | static int pwrdm_dbg_show_counter(struct powerdomain *pwrdm, void *user) | |
83 | { | |
84 | struct seq_file *s = (struct seq_file *)user; | |
85 | int i; | |
86 | ||
87 | if (strcmp(pwrdm->name, "emu_pwrdm") == 0 || | |
88 | strcmp(pwrdm->name, "wkup_pwrdm") == 0 || | |
89 | strncmp(pwrdm->name, "dpll", 4) == 0) | |
90 | return 0; | |
91 | ||
92 | if (pwrdm->state != pwrdm_read_pwrst(pwrdm)) | |
93 | printk(KERN_ERR "pwrdm state mismatch(%s) %d != %d\n", | |
94 | pwrdm->name, pwrdm->state, pwrdm_read_pwrst(pwrdm)); | |
95 | ||
96 | seq_printf(s, "%s (%s)", pwrdm->name, | |
97 | pwrdm_state_names[pwrdm->state]); | |
2354eb5a | 98 | for (i = 0; i < PWRDM_MAX_PWRSTS; i++) |
331b93f4 PDS |
99 | seq_printf(s, ",%s:%d", pwrdm_state_names[i], |
100 | pwrdm->state_counter[i]); | |
101 | ||
cde08f81 TG |
102 | seq_printf(s, ",RET-LOGIC-OFF:%d", pwrdm->ret_logic_off_counter); |
103 | for (i = 0; i < pwrdm->banks; i++) | |
104 | seq_printf(s, ",RET-MEMBANK%d-OFF:%d", i + 1, | |
105 | pwrdm->ret_mem_off_counter[i]); | |
106 | ||
5c02b01d | 107 | seq_putc(s, '\n'); |
331b93f4 PDS |
108 | return 0; |
109 | } | |
110 | ||
111 | static int pwrdm_dbg_show_timer(struct powerdomain *pwrdm, void *user) | |
112 | { | |
113 | struct seq_file *s = (struct seq_file *)user; | |
114 | int i; | |
115 | ||
116 | if (strcmp(pwrdm->name, "emu_pwrdm") == 0 || | |
117 | strcmp(pwrdm->name, "wkup_pwrdm") == 0 || | |
118 | strncmp(pwrdm->name, "dpll", 4) == 0) | |
119 | return 0; | |
120 | ||
121 | pwrdm_state_switch(pwrdm); | |
122 | ||
123 | seq_printf(s, "%s (%s)", pwrdm->name, | |
124 | pwrdm_state_names[pwrdm->state]); | |
125 | ||
126 | for (i = 0; i < 4; i++) | |
127 | seq_printf(s, ",%s:%lld", pwrdm_state_names[i], | |
128 | pwrdm->state_timer[i]); | |
129 | ||
5c02b01d | 130 | seq_putc(s, '\n'); |
331b93f4 PDS |
131 | return 0; |
132 | } | |
133 | ||
eb07fe9f | 134 | static int pm_dbg_counters_show(struct seq_file *s, void *unused) |
331b93f4 PDS |
135 | { |
136 | pwrdm_for_each(pwrdm_dbg_show_counter, s); | |
137 | clkdm_for_each(clkdm_dbg_show_counter, s); | |
138 | ||
139 | return 0; | |
140 | } | |
eb07fe9f | 141 | DEFINE_SHOW_ATTRIBUTE(pm_dbg_counters); |
331b93f4 | 142 | |
eb07fe9f | 143 | static int pm_dbg_timers_show(struct seq_file *s, void *unused) |
331b93f4 PDS |
144 | { |
145 | pwrdm_for_each(pwrdm_dbg_show_timer, s); | |
146 | return 0; | |
147 | } | |
eb07fe9f | 148 | DEFINE_SHOW_ATTRIBUTE(pm_dbg_timers); |
331b93f4 | 149 | |
68d4778c TK |
150 | static int pwrdm_suspend_get(void *data, u64 *val) |
151 | { | |
6cdee912 TG |
152 | int ret = -EINVAL; |
153 | ||
154 | if (cpu_is_omap34xx()) | |
155 | ret = omap3_pm_get_suspend_state((struct powerdomain *)data); | |
61b17d97 | 156 | *val = ret; |
68d4778c | 157 | |
61b17d97 | 158 | if (ret >= 0) |
68d4778c TK |
159 | return 0; |
160 | return *val; | |
161 | } | |
162 | ||
163 | static int pwrdm_suspend_set(void *data, u64 val) | |
164 | { | |
6cdee912 TG |
165 | if (cpu_is_omap34xx()) |
166 | return omap3_pm_set_suspend_state( | |
167 | (struct powerdomain *)data, (int)val); | |
168 | return -EINVAL; | |
68d4778c TK |
169 | } |
170 | ||
02e9821b JC |
171 | DEFINE_DEBUGFS_ATTRIBUTE(pwrdm_suspend_fops, pwrdm_suspend_get, |
172 | pwrdm_suspend_set, "%llu\n"); | |
68d4778c TK |
173 | |
174 | static int __init pwrdms_setup(struct powerdomain *pwrdm, void *dir) | |
331b93f4 PDS |
175 | { |
176 | int i; | |
177 | s64 t; | |
68d4778c | 178 | struct dentry *d; |
331b93f4 PDS |
179 | |
180 | t = sched_clock(); | |
181 | ||
182 | for (i = 0; i < 4; i++) | |
183 | pwrdm->state_timer[i] = 0; | |
184 | ||
185 | pwrdm->timer = t; | |
186 | ||
68d4778c TK |
187 | if (strncmp(pwrdm->name, "dpll", 4) == 0) |
188 | return 0; | |
189 | ||
190 | d = debugfs_create_dir(pwrdm->name, (struct dentry *)dir); | |
30ed997a GKH |
191 | debugfs_create_file("suspend", S_IRUGO|S_IWUSR, d, pwrdm, |
192 | &pwrdm_suspend_fops); | |
68d4778c | 193 | |
331b93f4 PDS |
194 | return 0; |
195 | } | |
196 | ||
c40552bc KH |
197 | static int option_get(void *data, u64 *val) |
198 | { | |
199 | u32 *option = data; | |
200 | ||
201 | *val = *option; | |
202 | ||
203 | return 0; | |
204 | } | |
205 | ||
206 | static int option_set(void *data, u64 val) | |
207 | { | |
208 | u32 *option = data; | |
209 | ||
210 | *option = val; | |
211 | ||
6cdee912 TG |
212 | if (option == &enable_off_mode) { |
213 | if (cpu_is_omap34xx()) | |
214 | omap3_pm_off_mode_enable(val); | |
215 | } | |
c40552bc KH |
216 | |
217 | return 0; | |
218 | } | |
219 | ||
220 | DEFINE_SIMPLE_ATTRIBUTE(pm_dbg_option_fops, option_get, option_set, "%llu\n"); | |
221 | ||
331b93f4 PDS |
222 | static int __init pm_dbg_init(void) |
223 | { | |
224 | struct dentry *d; | |
225 | ||
2811d6b3 TK |
226 | if (pm_dbg_init_done) |
227 | return 0; | |
228 | ||
331b93f4 | 229 | d = debugfs_create_dir("pm_debug", NULL); |
331b93f4 | 230 | |
30ed997a GKH |
231 | debugfs_create_file("count", 0444, d, NULL, &pm_dbg_counters_fops); |
232 | debugfs_create_file("time", 0444, d, NULL, &pm_dbg_timers_fops); | |
331b93f4 | 233 | |
e909d62a | 234 | pwrdm_for_each(pwrdms_setup, (void *)d); |
331b93f4 | 235 | |
30ed997a GKH |
236 | debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUSR, d, |
237 | &enable_off_mode, &pm_dbg_option_fops); | |
331b93f4 PDS |
238 | pm_dbg_init_done = 1; |
239 | ||
240 | return 0; | |
241 | } | |
b76c8b19 | 242 | omap_arch_initcall(pm_dbg_init); |
331b93f4 | 243 | |
331b93f4 | 244 | #endif |