Commit | Line | Data |
---|---|---|
8bd22949 KH |
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> | |
331b93f4 | 23 | #include <linux/sched.h> |
8bd22949 KH |
24 | #include <linux/clk.h> |
25 | #include <linux/err.h> | |
26 | #include <linux/io.h> | |
68d4778c | 27 | #include <linux/module.h> |
5a0e3ad6 | 28 | #include <linux/slab.h> |
8bd22949 | 29 | |
a135eaae | 30 | #include "clock.h" |
72e06d08 | 31 | #include "powerdomain.h" |
1540f214 | 32 | #include "clockdomain.h" |
1d5aef49 | 33 | #include "omap-pm.h" |
8bd22949 | 34 | |
e4c060db | 35 | #include "soc.h" |
59fb659b PW |
36 | #include "cm2xxx_3xxx.h" |
37 | #include "prm2xxx_3xxx.h" | |
8bd22949 KH |
38 | #include "pm.h" |
39 | ||
6cdee912 | 40 | u32 enable_off_mode; |
331b93f4 PDS |
41 | |
42 | #ifdef CONFIG_DEBUG_FS | |
43 | #include <linux/debugfs.h> | |
44 | #include <linux/seq_file.h> | |
45 | ||
331b93f4 PDS |
46 | static int pm_dbg_init_done; |
47 | ||
c8fb13d0 | 48 | static int pm_dbg_init(void); |
6b34f9d4 | 49 | |
331b93f4 PDS |
50 | enum { |
51 | DEBUG_FILE_COUNTERS = 0, | |
52 | DEBUG_FILE_TIMERS, | |
53 | }; | |
54 | ||
2354eb5a | 55 | static const char pwrdm_state_names[][PWRDM_MAX_PWRSTS] = { |
331b93f4 PDS |
56 | "OFF", |
57 | "RET", | |
58 | "INA", | |
59 | "ON" | |
60 | }; | |
61 | ||
62 | void 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 | ||
77 | static 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 | ||
92493870 PW |
86 | seq_printf(s, "%s->%s (%d)\n", clkdm->name, clkdm->pwrdm.ptr->name, |
87 | clkdm->usecount); | |
331b93f4 PDS |
88 | |
89 | return 0; | |
90 | } | |
91 | ||
92 | static 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]); | |
2354eb5a | 108 | for (i = 0; i < PWRDM_MAX_PWRSTS; i++) |
331b93f4 PDS |
109 | seq_printf(s, ",%s:%d", pwrdm_state_names[i], |
110 | pwrdm->state_counter[i]); | |
111 | ||
cde08f81 TG |
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 | ||
331b93f4 PDS |
117 | seq_printf(s, "\n"); |
118 | ||
119 | return 0; | |
120 | } | |
121 | ||
122 | static 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 | ||
145 | static 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 | ||
153 | static 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 | ||
159 | static 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); | |
c09fcc43 | 169 | } |
331b93f4 PDS |
170 | } |
171 | ||
172 | static 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 | ||
68d4778c TK |
179 | static int pwrdm_suspend_get(void *data, u64 *val) |
180 | { | |
6cdee912 TG |
181 | int ret = -EINVAL; |
182 | ||
183 | if (cpu_is_omap34xx()) | |
184 | ret = omap3_pm_get_suspend_state((struct powerdomain *)data); | |
61b17d97 | 185 | *val = ret; |
68d4778c | 186 | |
61b17d97 | 187 | if (ret >= 0) |
68d4778c TK |
188 | return 0; |
189 | return *val; | |
190 | } | |
191 | ||
192 | static int pwrdm_suspend_set(void *data, u64 val) | |
193 | { | |
6cdee912 TG |
194 | if (cpu_is_omap34xx()) |
195 | return omap3_pm_set_suspend_state( | |
196 | (struct powerdomain *)data, (int)val); | |
197 | return -EINVAL; | |
68d4778c TK |
198 | } |
199 | ||
200 | DEFINE_SIMPLE_ATTRIBUTE(pwrdm_suspend_fops, pwrdm_suspend_get, | |
201 | pwrdm_suspend_set, "%llu\n"); | |
202 | ||
203 | static int __init pwrdms_setup(struct powerdomain *pwrdm, void *dir) | |
331b93f4 PDS |
204 | { |
205 | int i; | |
206 | s64 t; | |
68d4778c | 207 | struct dentry *d; |
331b93f4 PDS |
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 | ||
68d4778c TK |
216 | if (strncmp(pwrdm->name, "dpll", 4) == 0) |
217 | return 0; | |
218 | ||
219 | d = debugfs_create_dir(pwrdm->name, (struct dentry *)dir); | |
d808aa69 | 220 | if (d) |
401606fd | 221 | (void) debugfs_create_file("suspend", S_IRUGO|S_IWUSR, d, |
68d4778c TK |
222 | (void *)pwrdm, &pwrdm_suspend_fops); |
223 | ||
331b93f4 PDS |
224 | return 0; |
225 | } | |
226 | ||
c40552bc KH |
227 | static int option_get(void *data, u64 *val) |
228 | { | |
229 | u32 *option = data; | |
230 | ||
231 | *val = *option; | |
232 | ||
233 | return 0; | |
234 | } | |
235 | ||
236 | static int option_set(void *data, u64 val) | |
237 | { | |
238 | u32 *option = data; | |
239 | ||
240 | *option = val; | |
241 | ||
6cdee912 | 242 | if (option == &enable_off_mode) { |
6081dc34 KH |
243 | if (val) |
244 | omap_pm_enable_off_mode(); | |
245 | else | |
246 | omap_pm_disable_off_mode(); | |
6cdee912 TG |
247 | if (cpu_is_omap34xx()) |
248 | omap3_pm_off_mode_enable(val); | |
249 | } | |
c40552bc KH |
250 | |
251 | return 0; | |
252 | } | |
253 | ||
254 | DEFINE_SIMPLE_ATTRIBUTE(pm_dbg_option_fops, option_get, option_set, "%llu\n"); | |
255 | ||
331b93f4 PDS |
256 | static int __init pm_dbg_init(void) |
257 | { | |
258 | struct dentry *d; | |
259 | ||
2811d6b3 TK |
260 | if (pm_dbg_init_done) |
261 | return 0; | |
262 | ||
331b93f4 | 263 | d = debugfs_create_dir("pm_debug", NULL); |
d808aa69 RK |
264 | if (!d) |
265 | return -EINVAL; | |
331b93f4 PDS |
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 | ||
e909d62a | 272 | pwrdm_for_each(pwrdms_setup, (void *)d); |
331b93f4 | 273 | |
f9fbe47c | 274 | (void) debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUSR, d, |
c40552bc | 275 | &enable_off_mode, &pm_dbg_option_fops); |
331b93f4 PDS |
276 | pm_dbg_init_done = 1; |
277 | ||
278 | return 0; | |
279 | } | |
b76c8b19 | 280 | omap_arch_initcall(pm_dbg_init); |
331b93f4 | 281 | |
331b93f4 | 282 | #endif |