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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
37u32 enable_off_mode;
38
39#ifdef CONFIG_DEBUG_FS
40#include <linux/debugfs.h>
41#include <linux/seq_file.h>
42
43static int pm_dbg_init_done;
44
45static int pm_dbg_init(void);
46
47static const char pwrdm_state_names[][PWRDM_MAX_PWRSTS] = {
48 "OFF",
49 "RET",
50 "INA",
51 "ON"
52};
53
54void pm_dbg_update_time(struct powerdomain *pwrdm, int prev)
55{
56 s64 t;
57
58 if (!pm_dbg_init_done)
59 return ;
60
61 /* Update timer for previous state */
62 t = sched_clock();
63
64 pwrdm->state_timer[prev] += t - pwrdm->timer;
65
66 pwrdm->timer = t;
67}
68
69static int clkdm_dbg_show_counter(struct clockdomain *clkdm, void *user)
70{
71 struct seq_file *s = (struct seq_file *)user;
72
73 if (strcmp(clkdm->name, "emu_clkdm") == 0 ||
74 strcmp(clkdm->name, "wkup_clkdm") == 0 ||
75 strncmp(clkdm->name, "dpll", 4) == 0)
76 return 0;
77
78 seq_printf(s, "%s->%s (%d)\n", clkdm->name, clkdm->pwrdm.ptr->name,
79 clkdm->usecount);
80
81 return 0;
82}
83
84static int pwrdm_dbg_show_counter(struct powerdomain *pwrdm, void *user)
85{
86 struct seq_file *s = (struct seq_file *)user;
87 int i;
88
89 if (strcmp(pwrdm->name, "emu_pwrdm") == 0 ||
90 strcmp(pwrdm->name, "wkup_pwrdm") == 0 ||
91 strncmp(pwrdm->name, "dpll", 4) == 0)
92 return 0;
93
94 if (pwrdm->state != pwrdm_read_pwrst(pwrdm))
95 printk(KERN_ERR "pwrdm state mismatch(%s) %d != %d\n",
96 pwrdm->name, pwrdm->state, pwrdm_read_pwrst(pwrdm));
97
98 seq_printf(s, "%s (%s)", pwrdm->name,
99 pwrdm_state_names[pwrdm->state]);
100 for (i = 0; i < PWRDM_MAX_PWRSTS; i++)
101 seq_printf(s, ",%s:%d", pwrdm_state_names[i],
102 pwrdm->state_counter[i]);
103
104 seq_printf(s, ",RET-LOGIC-OFF:%d", pwrdm->ret_logic_off_counter);
105 for (i = 0; i < pwrdm->banks; i++)
106 seq_printf(s, ",RET-MEMBANK%d-OFF:%d", i + 1,
107 pwrdm->ret_mem_off_counter[i]);
108
109 seq_putc(s, '\n');
110 return 0;
111}
112
113static int pwrdm_dbg_show_timer(struct powerdomain *pwrdm, void *user)
114{
115 struct seq_file *s = (struct seq_file *)user;
116 int i;
117
118 if (strcmp(pwrdm->name, "emu_pwrdm") == 0 ||
119 strcmp(pwrdm->name, "wkup_pwrdm") == 0 ||
120 strncmp(pwrdm->name, "dpll", 4) == 0)
121 return 0;
122
123 pwrdm_state_switch(pwrdm);
124
125 seq_printf(s, "%s (%s)", pwrdm->name,
126 pwrdm_state_names[pwrdm->state]);
127
128 for (i = 0; i < 4; i++)
129 seq_printf(s, ",%s:%lld", pwrdm_state_names[i],
130 pwrdm->state_timer[i]);
131
132 seq_putc(s, '\n');
133 return 0;
134}
135
136static int pm_dbg_counters_show(struct seq_file *s, void *unused)
137{
138 pwrdm_for_each(pwrdm_dbg_show_counter, s);
139 clkdm_for_each(clkdm_dbg_show_counter, s);
140
141 return 0;
142}
143DEFINE_SHOW_ATTRIBUTE(pm_dbg_counters);
144
145static int pm_dbg_timers_show(struct seq_file *s, void *unused)
146{
147 pwrdm_for_each(pwrdm_dbg_show_timer, s);
148 return 0;
149}
150DEFINE_SHOW_ATTRIBUTE(pm_dbg_timers);
151
152static int pwrdm_suspend_get(void *data, u64 *val)
153{
154 int ret = -EINVAL;
155
156 if (cpu_is_omap34xx())
157 ret = omap3_pm_get_suspend_state((struct powerdomain *)data);
158 *val = ret;
159
160 if (ret >= 0)
161 return 0;
162 return *val;
163}
164
165static int pwrdm_suspend_set(void *data, u64 val)
166{
167 if (cpu_is_omap34xx())
168 return omap3_pm_set_suspend_state(
169 (struct powerdomain *)data, (int)val);
170 return -EINVAL;
171}
172
173DEFINE_SIMPLE_ATTRIBUTE(pwrdm_suspend_fops, pwrdm_suspend_get,
174 pwrdm_suspend_set, "%llu\n");
175
176static int __init pwrdms_setup(struct powerdomain *pwrdm, void *dir)
177{
178 int i;
179 s64 t;
180 struct dentry *d;
181
182 t = sched_clock();
183
184 for (i = 0; i < 4; i++)
185 pwrdm->state_timer[i] = 0;
186
187 pwrdm->timer = t;
188
189 if (strncmp(pwrdm->name, "dpll", 4) == 0)
190 return 0;
191
192 d = debugfs_create_dir(pwrdm->name, (struct dentry *)dir);
193 debugfs_create_file("suspend", S_IRUGO|S_IWUSR, d, pwrdm,
194 &pwrdm_suspend_fops);
195
196 return 0;
197}
198
199static int option_get(void *data, u64 *val)
200{
201 u32 *option = data;
202
203 *val = *option;
204
205 return 0;
206}
207
208static int option_set(void *data, u64 val)
209{
210 u32 *option = data;
211
212 *option = val;
213
214 if (option == &enable_off_mode) {
215 if (cpu_is_omap34xx())
216 omap3_pm_off_mode_enable(val);
217 }
218
219 return 0;
220}
221
222DEFINE_SIMPLE_ATTRIBUTE(pm_dbg_option_fops, option_get, option_set, "%llu\n");
223
224static int __init pm_dbg_init(void)
225{
226 struct dentry *d;
227
228 if (pm_dbg_init_done)
229 return 0;
230
231 d = debugfs_create_dir("pm_debug", NULL);
232
233 debugfs_create_file("count", 0444, d, NULL, &pm_dbg_counters_fops);
234 debugfs_create_file("time", 0444, d, NULL, &pm_dbg_timers_fops);
235
236 pwrdm_for_each(pwrdms_setup, (void *)d);
237
238 debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUSR, d,
239 &enable_off_mode, &pm_dbg_option_fops);
240 pm_dbg_init_done = 1;
241
242 return 0;
243}
244omap_arch_initcall(pm_dbg_init);
245
246#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
37u32 enable_off_mode;
38
39#ifdef CONFIG_DEBUG_FS
40#include <linux/debugfs.h>
41#include <linux/seq_file.h>
42
43static int pm_dbg_init_done;
44
45static int pm_dbg_init(void);
46
47static const char pwrdm_state_names[][PWRDM_MAX_PWRSTS] = {
48 "OFF",
49 "RET",
50 "INA",
51 "ON"
52};
53
54void pm_dbg_update_time(struct powerdomain *pwrdm, int prev)
55{
56 s64 t;
57
58 if (!pm_dbg_init_done)
59 return ;
60
61 /* Update timer for previous state */
62 t = sched_clock();
63
64 pwrdm->state_timer[prev] += t - pwrdm->timer;
65
66 pwrdm->timer = t;
67}
68
69static int clkdm_dbg_show_counter(struct clockdomain *clkdm, void *user)
70{
71 struct seq_file *s = (struct seq_file *)user;
72
73 if (strcmp(clkdm->name, "emu_clkdm") == 0 ||
74 strcmp(clkdm->name, "wkup_clkdm") == 0 ||
75 strncmp(clkdm->name, "dpll", 4) == 0)
76 return 0;
77
78 seq_printf(s, "%s->%s (%d)\n", clkdm->name, clkdm->pwrdm.ptr->name,
79 clkdm->usecount);
80
81 return 0;
82}
83
84static int pwrdm_dbg_show_counter(struct powerdomain *pwrdm, void *user)
85{
86 struct seq_file *s = (struct seq_file *)user;
87 int i;
88
89 if (strcmp(pwrdm->name, "emu_pwrdm") == 0 ||
90 strcmp(pwrdm->name, "wkup_pwrdm") == 0 ||
91 strncmp(pwrdm->name, "dpll", 4) == 0)
92 return 0;
93
94 if (pwrdm->state != pwrdm_read_pwrst(pwrdm))
95 printk(KERN_ERR "pwrdm state mismatch(%s) %d != %d\n",
96 pwrdm->name, pwrdm->state, pwrdm_read_pwrst(pwrdm));
97
98 seq_printf(s, "%s (%s)", pwrdm->name,
99 pwrdm_state_names[pwrdm->state]);
100 for (i = 0; i < PWRDM_MAX_PWRSTS; i++)
101 seq_printf(s, ",%s:%d", pwrdm_state_names[i],
102 pwrdm->state_counter[i]);
103
104 seq_printf(s, ",RET-LOGIC-OFF:%d", pwrdm->ret_logic_off_counter);
105 for (i = 0; i < pwrdm->banks; i++)
106 seq_printf(s, ",RET-MEMBANK%d-OFF:%d", i + 1,
107 pwrdm->ret_mem_off_counter[i]);
108
109 seq_putc(s, '\n');
110 return 0;
111}
112
113static int pwrdm_dbg_show_timer(struct powerdomain *pwrdm, void *user)
114{
115 struct seq_file *s = (struct seq_file *)user;
116 int i;
117
118 if (strcmp(pwrdm->name, "emu_pwrdm") == 0 ||
119 strcmp(pwrdm->name, "wkup_pwrdm") == 0 ||
120 strncmp(pwrdm->name, "dpll", 4) == 0)
121 return 0;
122
123 pwrdm_state_switch(pwrdm);
124
125 seq_printf(s, "%s (%s)", pwrdm->name,
126 pwrdm_state_names[pwrdm->state]);
127
128 for (i = 0; i < 4; i++)
129 seq_printf(s, ",%s:%lld", pwrdm_state_names[i],
130 pwrdm->state_timer[i]);
131
132 seq_putc(s, '\n');
133 return 0;
134}
135
136static int pm_dbg_counters_show(struct seq_file *s, void *unused)
137{
138 pwrdm_for_each(pwrdm_dbg_show_counter, s);
139 clkdm_for_each(clkdm_dbg_show_counter, s);
140
141 return 0;
142}
143DEFINE_SHOW_ATTRIBUTE(pm_dbg_counters);
144
145static int pm_dbg_timers_show(struct seq_file *s, void *unused)
146{
147 pwrdm_for_each(pwrdm_dbg_show_timer, s);
148 return 0;
149}
150DEFINE_SHOW_ATTRIBUTE(pm_dbg_timers);
151
152static int pwrdm_suspend_get(void *data, u64 *val)
153{
154 int ret = -EINVAL;
155
156 if (cpu_is_omap34xx())
157 ret = omap3_pm_get_suspend_state((struct powerdomain *)data);
158 *val = ret;
159
160 if (ret >= 0)
161 return 0;
162 return *val;
163}
164
165static int pwrdm_suspend_set(void *data, u64 val)
166{
167 if (cpu_is_omap34xx())
168 return omap3_pm_set_suspend_state(
169 (struct powerdomain *)data, (int)val);
170 return -EINVAL;
171}
172
173DEFINE_SIMPLE_ATTRIBUTE(pwrdm_suspend_fops, pwrdm_suspend_get,
174 pwrdm_suspend_set, "%llu\n");
175
176static int __init pwrdms_setup(struct powerdomain *pwrdm, void *dir)
177{
178 int i;
179 s64 t;
180 struct dentry *d;
181
182 t = sched_clock();
183
184 for (i = 0; i < 4; i++)
185 pwrdm->state_timer[i] = 0;
186
187 pwrdm->timer = t;
188
189 if (strncmp(pwrdm->name, "dpll", 4) == 0)
190 return 0;
191
192 d = debugfs_create_dir(pwrdm->name, (struct dentry *)dir);
193 debugfs_create_file("suspend", S_IRUGO|S_IWUSR, d, pwrdm,
194 &pwrdm_suspend_fops);
195
196 return 0;
197}
198
199static int option_get(void *data, u64 *val)
200{
201 u32 *option = data;
202
203 *val = *option;
204
205 return 0;
206}
207
208static int option_set(void *data, u64 val)
209{
210 u32 *option = data;
211
212 *option = val;
213
214 if (option == &enable_off_mode) {
215 if (cpu_is_omap34xx())
216 omap3_pm_off_mode_enable(val);
217 }
218
219 return 0;
220}
221
222DEFINE_SIMPLE_ATTRIBUTE(pm_dbg_option_fops, option_get, option_set, "%llu\n");
223
224static int __init pm_dbg_init(void)
225{
226 struct dentry *d;
227
228 if (pm_dbg_init_done)
229 return 0;
230
231 d = debugfs_create_dir("pm_debug", NULL);
232
233 debugfs_create_file("count", 0444, d, NULL, &pm_dbg_counters_fops);
234 debugfs_create_file("time", 0444, d, NULL, &pm_dbg_timers_fops);
235
236 pwrdm_for_each(pwrdms_setup, (void *)d);
237
238 debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUSR, d,
239 &enable_off_mode, &pm_dbg_option_fops);
240 pm_dbg_init_done = 1;
241
242 return 0;
243}
244omap_arch_initcall(pm_dbg_init);
245
246#endif