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1/*
2 * OMAP Power Management debug routines
3 *
4 * Copyright (C) 2005 Texas Instruments, Inc.
5 * Copyright (C) 2006-2008 Nokia Corporation
6 *
7 * Written by:
8 * Richard Woodruff <r-woodruff2@ti.com>
9 * Tony Lindgren
10 * Juha Yrjola
11 * Amit Kucheria <amit.kucheria@nokia.com>
12 * Igor Stoppa <igor.stoppa@nokia.com>
13 * Jouni Hogander
14 *
15 * Based on pm.c for omap2
16 *
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License version 2 as
19 * published by the Free Software Foundation.
20 */
21
22#include <linux/kernel.h>
23#include <linux/sched.h>
24#include <linux/clk.h>
25#include <linux/err.h>
26#include <linux/io.h>
27#include <linux/module.h>
28#include <linux/slab.h>
29
30#include "clock.h"
31#include "powerdomain.h"
32#include "clockdomain.h"
33#include "omap-pm.h"
34
35#include "soc.h"
36#include "cm2xxx_3xxx.h"
37#include "prm2xxx_3xxx.h"
38#include "pm.h"
39
40u32 enable_off_mode;
41
42#ifdef CONFIG_DEBUG_FS
43#include <linux/debugfs.h>
44#include <linux/seq_file.h>
45
46static int pm_dbg_init_done;
47
48static int pm_dbg_init(void);
49
50enum {
51 DEBUG_FILE_COUNTERS = 0,
52 DEBUG_FILE_TIMERS,
53};
54
55static const char pwrdm_state_names[][PWRDM_MAX_PWRSTS] = {
56 "OFF",
57 "RET",
58 "INA",
59 "ON"
60};
61
62void pm_dbg_update_time(struct powerdomain *pwrdm, int prev)
63{
64 s64 t;
65
66 if (!pm_dbg_init_done)
67 return ;
68
69 /* Update timer for previous state */
70 t = sched_clock();
71
72 pwrdm->state_timer[prev] += t - pwrdm->timer;
73
74 pwrdm->timer = t;
75}
76
77static int clkdm_dbg_show_counter(struct clockdomain *clkdm, void *user)
78{
79 struct seq_file *s = (struct seq_file *)user;
80
81 if (strcmp(clkdm->name, "emu_clkdm") == 0 ||
82 strcmp(clkdm->name, "wkup_clkdm") == 0 ||
83 strncmp(clkdm->name, "dpll", 4) == 0)
84 return 0;
85
86 seq_printf(s, "%s->%s (%d)\n", clkdm->name, clkdm->pwrdm.ptr->name,
87 clkdm->usecount);
88
89 return 0;
90}
91
92static int pwrdm_dbg_show_counter(struct powerdomain *pwrdm, void *user)
93{
94 struct seq_file *s = (struct seq_file *)user;
95 int i;
96
97 if (strcmp(pwrdm->name, "emu_pwrdm") == 0 ||
98 strcmp(pwrdm->name, "wkup_pwrdm") == 0 ||
99 strncmp(pwrdm->name, "dpll", 4) == 0)
100 return 0;
101
102 if (pwrdm->state != pwrdm_read_pwrst(pwrdm))
103 printk(KERN_ERR "pwrdm state mismatch(%s) %d != %d\n",
104 pwrdm->name, pwrdm->state, pwrdm_read_pwrst(pwrdm));
105
106 seq_printf(s, "%s (%s)", pwrdm->name,
107 pwrdm_state_names[pwrdm->state]);
108 for (i = 0; i < PWRDM_MAX_PWRSTS; i++)
109 seq_printf(s, ",%s:%d", pwrdm_state_names[i],
110 pwrdm->state_counter[i]);
111
112 seq_printf(s, ",RET-LOGIC-OFF:%d", pwrdm->ret_logic_off_counter);
113 for (i = 0; i < pwrdm->banks; i++)
114 seq_printf(s, ",RET-MEMBANK%d-OFF:%d", i + 1,
115 pwrdm->ret_mem_off_counter[i]);
116
117 seq_printf(s, "\n");
118
119 return 0;
120}
121
122static int pwrdm_dbg_show_timer(struct powerdomain *pwrdm, void *user)
123{
124 struct seq_file *s = (struct seq_file *)user;
125 int i;
126
127 if (strcmp(pwrdm->name, "emu_pwrdm") == 0 ||
128 strcmp(pwrdm->name, "wkup_pwrdm") == 0 ||
129 strncmp(pwrdm->name, "dpll", 4) == 0)
130 return 0;
131
132 pwrdm_state_switch(pwrdm);
133
134 seq_printf(s, "%s (%s)", pwrdm->name,
135 pwrdm_state_names[pwrdm->state]);
136
137 for (i = 0; i < 4; i++)
138 seq_printf(s, ",%s:%lld", pwrdm_state_names[i],
139 pwrdm->state_timer[i]);
140
141 seq_printf(s, "\n");
142 return 0;
143}
144
145static int pm_dbg_show_counters(struct seq_file *s, void *unused)
146{
147 pwrdm_for_each(pwrdm_dbg_show_counter, s);
148 clkdm_for_each(clkdm_dbg_show_counter, s);
149
150 return 0;
151}
152
153static int pm_dbg_show_timers(struct seq_file *s, void *unused)
154{
155 pwrdm_for_each(pwrdm_dbg_show_timer, s);
156 return 0;
157}
158
159static int pm_dbg_open(struct inode *inode, struct file *file)
160{
161 switch ((int)inode->i_private) {
162 case DEBUG_FILE_COUNTERS:
163 return single_open(file, pm_dbg_show_counters,
164 &inode->i_private);
165 case DEBUG_FILE_TIMERS:
166 default:
167 return single_open(file, pm_dbg_show_timers,
168 &inode->i_private);
169 }
170}
171
172static const struct file_operations debug_fops = {
173 .open = pm_dbg_open,
174 .read = seq_read,
175 .llseek = seq_lseek,
176 .release = single_release,
177};
178
179static int pwrdm_suspend_get(void *data, u64 *val)
180{
181 int ret = -EINVAL;
182
183 if (cpu_is_omap34xx())
184 ret = omap3_pm_get_suspend_state((struct powerdomain *)data);
185 *val = ret;
186
187 if (ret >= 0)
188 return 0;
189 return *val;
190}
191
192static int pwrdm_suspend_set(void *data, u64 val)
193{
194 if (cpu_is_omap34xx())
195 return omap3_pm_set_suspend_state(
196 (struct powerdomain *)data, (int)val);
197 return -EINVAL;
198}
199
200DEFINE_SIMPLE_ATTRIBUTE(pwrdm_suspend_fops, pwrdm_suspend_get,
201 pwrdm_suspend_set, "%llu\n");
202
203static int __init pwrdms_setup(struct powerdomain *pwrdm, void *dir)
204{
205 int i;
206 s64 t;
207 struct dentry *d;
208
209 t = sched_clock();
210
211 for (i = 0; i < 4; i++)
212 pwrdm->state_timer[i] = 0;
213
214 pwrdm->timer = t;
215
216 if (strncmp(pwrdm->name, "dpll", 4) == 0)
217 return 0;
218
219 d = debugfs_create_dir(pwrdm->name, (struct dentry *)dir);
220 if (d)
221 (void) debugfs_create_file("suspend", S_IRUGO|S_IWUSR, d,
222 (void *)pwrdm, &pwrdm_suspend_fops);
223
224 return 0;
225}
226
227static int option_get(void *data, u64 *val)
228{
229 u32 *option = data;
230
231 *val = *option;
232
233 return 0;
234}
235
236static int option_set(void *data, u64 val)
237{
238 u32 *option = data;
239
240 *option = val;
241
242 if (option == &enable_off_mode) {
243 if (val)
244 omap_pm_enable_off_mode();
245 else
246 omap_pm_disable_off_mode();
247 if (cpu_is_omap34xx())
248 omap3_pm_off_mode_enable(val);
249 }
250
251 return 0;
252}
253
254DEFINE_SIMPLE_ATTRIBUTE(pm_dbg_option_fops, option_get, option_set, "%llu\n");
255
256static int __init pm_dbg_init(void)
257{
258 struct dentry *d;
259
260 if (pm_dbg_init_done)
261 return 0;
262
263 d = debugfs_create_dir("pm_debug", NULL);
264 if (!d)
265 return -EINVAL;
266
267 (void) debugfs_create_file("count", S_IRUGO,
268 d, (void *)DEBUG_FILE_COUNTERS, &debug_fops);
269 (void) debugfs_create_file("time", S_IRUGO,
270 d, (void *)DEBUG_FILE_TIMERS, &debug_fops);
271
272 pwrdm_for_each(pwrdms_setup, (void *)d);
273
274 (void) debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUSR, d,
275 &enable_off_mode, &pm_dbg_option_fops);
276 pm_dbg_init_done = 1;
277
278 return 0;
279}
280omap_arch_initcall(pm_dbg_init);
281
282#endif
1// SPDX-License-Identifier: GPL-2.0-only
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
17 */
18
19#include <linux/kernel.h>
20#include <linux/sched.h>
21#include <linux/sched/clock.h>
22#include <linux/clk.h>
23#include <linux/err.h>
24#include <linux/io.h>
25#include <linux/module.h>
26#include <linux/slab.h>
27
28#include "clock.h"
29#include "powerdomain.h"
30#include "clockdomain.h"
31
32#include "soc.h"
33#include "cm2xxx_3xxx.h"
34#include "prm2xxx_3xxx.h"
35#include "pm.h"
36
37#ifdef CONFIG_DEBUG_FS
38#include <linux/debugfs.h>
39#include <linux/seq_file.h>
40
41static int pm_dbg_init_done;
42
43static int pm_dbg_init(void);
44
45static const char pwrdm_state_names[][PWRDM_MAX_PWRSTS] = {
46 "OFF",
47 "RET",
48 "INA",
49 "ON"
50};
51
52void 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
67static 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
76 seq_printf(s, "%s->%s (%d)\n", clkdm->name, clkdm->pwrdm.ptr->name,
77 clkdm->usecount);
78
79 return 0;
80}
81
82static 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]);
98 for (i = 0; i < PWRDM_MAX_PWRSTS; i++)
99 seq_printf(s, ",%s:%d", pwrdm_state_names[i],
100 pwrdm->state_counter[i]);
101
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
107 seq_putc(s, '\n');
108 return 0;
109}
110
111static 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
130 seq_putc(s, '\n');
131 return 0;
132}
133
134static int pm_dbg_counters_show(struct seq_file *s, void *unused)
135{
136 pwrdm_for_each(pwrdm_dbg_show_counter, s);
137 clkdm_for_each(clkdm_dbg_show_counter, s);
138
139 return 0;
140}
141DEFINE_SHOW_ATTRIBUTE(pm_dbg_counters);
142
143static int pm_dbg_timers_show(struct seq_file *s, void *unused)
144{
145 pwrdm_for_each(pwrdm_dbg_show_timer, s);
146 return 0;
147}
148DEFINE_SHOW_ATTRIBUTE(pm_dbg_timers);
149
150static int pwrdm_suspend_get(void *data, u64 *val)
151{
152 int ret = -EINVAL;
153
154 if (cpu_is_omap34xx())
155 ret = omap3_pm_get_suspend_state((struct powerdomain *)data);
156 *val = ret;
157
158 if (ret >= 0)
159 return 0;
160 return *val;
161}
162
163static int pwrdm_suspend_set(void *data, u64 val)
164{
165 if (cpu_is_omap34xx())
166 return omap3_pm_set_suspend_state(
167 (struct powerdomain *)data, (int)val);
168 return -EINVAL;
169}
170
171DEFINE_DEBUGFS_ATTRIBUTE(pwrdm_suspend_fops, pwrdm_suspend_get,
172 pwrdm_suspend_set, "%llu\n");
173
174static int __init pwrdms_setup(struct powerdomain *pwrdm, void *dir)
175{
176 int i;
177 s64 t;
178 struct dentry *d;
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
187 if (strncmp(pwrdm->name, "dpll", 4) == 0)
188 return 0;
189
190 d = debugfs_create_dir(pwrdm->name, (struct dentry *)dir);
191 debugfs_create_file("suspend", S_IRUGO|S_IWUSR, d, pwrdm,
192 &pwrdm_suspend_fops);
193
194 return 0;
195}
196
197static int option_get(void *data, u64 *val)
198{
199 u32 *option = data;
200
201 *val = *option;
202
203 return 0;
204}
205
206static int option_set(void *data, u64 val)
207{
208 u32 *option = data;
209
210 *option = val;
211
212 if (option == &enable_off_mode) {
213 if (cpu_is_omap34xx())
214 omap3_pm_off_mode_enable(val);
215 }
216
217 return 0;
218}
219
220DEFINE_SIMPLE_ATTRIBUTE(pm_dbg_option_fops, option_get, option_set, "%llu\n");
221
222static int __init pm_dbg_init(void)
223{
224 struct dentry *d;
225
226 if (pm_dbg_init_done)
227 return 0;
228
229 d = debugfs_create_dir("pm_debug", NULL);
230
231 debugfs_create_file("count", 0444, d, NULL, &pm_dbg_counters_fops);
232 debugfs_create_file("time", 0444, d, NULL, &pm_dbg_timers_fops);
233
234 pwrdm_for_each(pwrdms_setup, (void *)d);
235
236 debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUSR, d,
237 &enable_off_mode, &pm_dbg_option_fops);
238 pm_dbg_init_done = 1;
239
240 return 0;
241}
242omap_arch_initcall(pm_dbg_init);
243
244#endif