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2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/kernel/power/wakeup_reason.c
....@@ -27,9 +27,6 @@
2727 #include <linux/notifier.h>
2828 #include <linux/suspend.h>
2929 #include <linux/slab.h>
30
-#if defined(CONFIG_ROCKCHIP_SIP)
31
-#include <linux/rockchip/rockchip_sip.h>
32
-#endif
3330 
3431 /*
3532  * struct wakeup_irq_node - stores data and relationships for IRQs logged as
....@@ -44,7 +41,14 @@
4441 	const char *irq_name;
4542 };
4643 
47
-static DEFINE_RAW_SPINLOCK(wakeup_reason_lock);
44
+enum wakeup_reason_flag {
45
+	RESUME_NONE = 0,
46
+	RESUME_IRQ,
47
+	RESUME_ABORT,
48
+	RESUME_ABNORMAL,
49
+};
50
+
51
+static DEFINE_SPINLOCK(wakeup_reason_lock);
4852 
4953 static LIST_HEAD(leaf_irqs);   /* kept in ascending IRQ sorted order */
5054 static LIST_HEAD(parent_irqs); /* unordered */
....@@ -56,8 +60,7 @@
5660 static struct kobject *kobj;
5761 
5862 static bool capture_reasons;
59
-static bool suspend_abort;
60
-static bool abnormal_wake;
63
+static int wakeup_reason;
6164 static char non_irq_wake_reason[MAX_SUSPEND_ABORT_LEN];
6265 
6366 static ktime_t last_monotime; /* monotonic time before last suspend */
....@@ -149,17 +152,22 @@
149152 {
150153 	unsigned long flags;
151154 
152
-	raw_spin_lock_irqsave(&wakeup_reason_lock, flags);
155
+	spin_lock_irqsave(&wakeup_reason_lock, flags);
156
+	if (wakeup_reason == RESUME_ABNORMAL || wakeup_reason == RESUME_ABORT) {
157
+		spin_unlock_irqrestore(&wakeup_reason_lock, flags);
158
+		return;
159
+	}
153160 
154161 	if (!capture_reasons) {
155
-		raw_spin_unlock_irqrestore(&wakeup_reason_lock, flags);
162
+		spin_unlock_irqrestore(&wakeup_reason_lock, flags);
156163 		return;
157164 	}
158165 
159166 	if (find_node_in_list(&parent_irqs, irq) == NULL)
160167 		add_sibling_node_sorted(&leaf_irqs, irq);
161168 
162
-	raw_spin_unlock_irqrestore(&wakeup_reason_lock, flags);
169
+	wakeup_reason = RESUME_IRQ;
170
+	spin_unlock_irqrestore(&wakeup_reason_lock, flags);
163171 }
164172 
165173 void log_threaded_irq_wakeup_reason(int irq, int parent_irq)
....@@ -177,10 +185,15 @@
177185 	if (!capture_reasons)
178186 		return;
179187 
180
-	raw_spin_lock_irqsave(&wakeup_reason_lock, flags);
188
+	spin_lock_irqsave(&wakeup_reason_lock, flags);
189
+
190
+	if (wakeup_reason == RESUME_ABNORMAL || wakeup_reason == RESUME_ABORT) {
191
+		spin_unlock_irqrestore(&wakeup_reason_lock, flags);
192
+		return;
193
+	}
181194 
182195 	if (!capture_reasons || (find_node_in_list(&leaf_irqs, irq) != NULL)) {
183
-		raw_spin_unlock_irqrestore(&wakeup_reason_lock, flags);
196
+		spin_unlock_irqrestore(&wakeup_reason_lock, flags);
184197 		return;
185198 	}
186199 
....@@ -196,27 +209,31 @@
196209 		}
197210 	}
198211 
199
-	raw_spin_unlock_irqrestore(&wakeup_reason_lock, flags);
212
+	spin_unlock_irqrestore(&wakeup_reason_lock, flags);
200213 }
214
+EXPORT_SYMBOL_GPL(log_threaded_irq_wakeup_reason);
201215 
202216 static void __log_abort_or_abnormal_wake(bool abort, const char *fmt,
203217 					 va_list args)
204218 {
205219 	unsigned long flags;
206220 
207
-	raw_spin_lock_irqsave(&wakeup_reason_lock, flags);
221
+	spin_lock_irqsave(&wakeup_reason_lock, flags);
208222 
209223 	/* Suspend abort or abnormal wake reason has already been logged. */
210
-	if (suspend_abort || abnormal_wake) {
211
-		raw_spin_unlock_irqrestore(&wakeup_reason_lock, flags);
224
+	if (wakeup_reason != RESUME_NONE) {
225
+		spin_unlock_irqrestore(&wakeup_reason_lock, flags);
212226 		return;
213227 	}
214228 
215
-	suspend_abort = abort;
216
-	abnormal_wake = !abort;
229
+	if (abort)
230
+		wakeup_reason = RESUME_ABORT;
231
+	else
232
+		wakeup_reason = RESUME_ABNORMAL;
233
+
217234 	vsnprintf(non_irq_wake_reason, MAX_SUSPEND_ABORT_LEN, fmt, args);
218235 
219
-	raw_spin_unlock_irqrestore(&wakeup_reason_lock, flags);
236
+	spin_unlock_irqrestore(&wakeup_reason_lock, flags);
220237 }
221238 
222239 void log_suspend_abort_reason(const char *fmt, ...)
....@@ -227,6 +244,7 @@
227244 	__log_abort_or_abnormal_wake(true, fmt, args);
228245 	va_end(args);
229246 }
247
+EXPORT_SYMBOL_GPL(log_suspend_abort_reason);
230248 
231249 void log_abnormal_wakeup_reason(const char *fmt, ...)
232250 {
....@@ -236,20 +254,20 @@
236254 	__log_abort_or_abnormal_wake(false, fmt, args);
237255 	va_end(args);
238256 }
257
+EXPORT_SYMBOL_GPL(log_abnormal_wakeup_reason);
239258 
240259 void clear_wakeup_reasons(void)
241260 {
242261 	unsigned long flags;
243262 
244
-	raw_spin_lock_irqsave(&wakeup_reason_lock, flags);
263
+	spin_lock_irqsave(&wakeup_reason_lock, flags);
245264 
246265 	delete_list(&leaf_irqs);
247266 	delete_list(&parent_irqs);
248
-	suspend_abort = false;
249
-	abnormal_wake = false;
267
+	wakeup_reason = RESUME_NONE;
250268 	capture_reasons = true;
251269 
252
-	raw_spin_unlock_irqrestore(&wakeup_reason_lock, flags);
270
+	spin_unlock_irqrestore(&wakeup_reason_lock, flags);
253271 }
254272 
255273 static void print_wakeup_sources(void)
....@@ -257,26 +275,26 @@
257275 	struct wakeup_irq_node *n;
258276 	unsigned long flags;
259277 
260
-	raw_spin_lock_irqsave(&wakeup_reason_lock, flags);
278
+	spin_lock_irqsave(&wakeup_reason_lock, flags);
261279 
262280 	capture_reasons = false;
263281 
264
-	if (suspend_abort) {
282
+	if (wakeup_reason == RESUME_ABORT) {
265283 		pr_info("Abort: %s\n", non_irq_wake_reason);
266
-		raw_spin_unlock_irqrestore(&wakeup_reason_lock, flags);
284
+		spin_unlock_irqrestore(&wakeup_reason_lock, flags);
267285 		return;
268286 	}
269287 
270
-	if (!list_empty(&leaf_irqs))
288
+	if (wakeup_reason == RESUME_IRQ && !list_empty(&leaf_irqs))
271289 		list_for_each_entry(n, &leaf_irqs, siblings)
272290 			pr_info("Resume caused by IRQ %d, %s\n", n->irq,
273291 				n->irq_name);
274
-	else if (abnormal_wake)
292
+	else if (wakeup_reason == RESUME_ABNORMAL)
275293 		pr_info("Resume caused by %s\n", non_irq_wake_reason);
276294 	else
277295 		pr_info("Resume cause unknown\n");
278296 
279
-	raw_spin_unlock_irqrestore(&wakeup_reason_lock, flags);
297
+	spin_unlock_irqrestore(&wakeup_reason_lock, flags);
280298 }
281299 
282300 static ssize_t last_resume_reason_show(struct kobject *kobj,
....@@ -286,25 +304,25 @@
286304 	struct wakeup_irq_node *n;
287305 	unsigned long flags;
288306 
289
-	raw_spin_lock_irqsave(&wakeup_reason_lock, flags);
307
+	spin_lock_irqsave(&wakeup_reason_lock, flags);
290308 
291
-	if (suspend_abort) {
309
+	if (wakeup_reason == RESUME_ABORT) {
292310 		buf_offset = scnprintf(buf, PAGE_SIZE, "Abort: %s",
293311 				       non_irq_wake_reason);
294
-		raw_spin_unlock_irqrestore(&wakeup_reason_lock, flags);
312
+		spin_unlock_irqrestore(&wakeup_reason_lock, flags);
295313 		return buf_offset;
296314 	}
297315 
298
-	if (!list_empty(&leaf_irqs))
316
+	if (wakeup_reason == RESUME_IRQ && !list_empty(&leaf_irqs))
299317 		list_for_each_entry(n, &leaf_irqs, siblings)
300318 			buf_offset += scnprintf(buf + buf_offset,
301319 						PAGE_SIZE - buf_offset,
302320 						"%d %s\n", n->irq, n->irq_name);
303
-	else if (abnormal_wake)
321
+	else if (wakeup_reason == RESUME_ABNORMAL)
304322 		buf_offset = scnprintf(buf, PAGE_SIZE, "-1 %s",
305323 				       non_irq_wake_reason);
306324 
307
-	raw_spin_unlock_irqrestore(&wakeup_reason_lock, flags);
325
+	spin_unlock_irqrestore(&wakeup_reason_lock, flags);
308326 
309327 	return buf_offset;
310328 }
....@@ -340,37 +358,12 @@
340358 		       sleep_time.tv_nsec);
341359 }
342360 
343
-#if defined(CONFIG_ROCKCHIP_SIP)
344
-static ssize_t total_suspend_wfi_time_show(struct kobject *kobj,
345
-					   struct kobj_attribute *attr,
346
-					   char *buf)
347
-{
348
-	struct arm_smccc_res res;
349
-	unsigned long wfi_time_ms;
350
-
351
-	res = sip_smc_get_suspend_info(SUSPEND_WFI_TIME_MS);
352
-	if (res.a0)
353
-		wfi_time_ms = 0;
354
-	else
355
-		wfi_time_ms = res.a1;
356
-
357
-	return sprintf(buf, "%lu.%02lu\n", wfi_time_ms / MSEC_PER_SEC,
358
-		       (wfi_time_ms % MSEC_PER_SEC) / 10);
359
-}
360
-#endif
361
-
362361 static struct kobj_attribute resume_reason = __ATTR_RO(last_resume_reason);
363362 static struct kobj_attribute suspend_time = __ATTR_RO(last_suspend_time);
364
-#if defined(CONFIG_ROCKCHIP_SIP)
365
-static struct kobj_attribute suspend_wfi_time = __ATTR_RO(total_suspend_wfi_time);
366
-#endif
367363 
368364 static struct attribute *attrs[] = {
369365 	&resume_reason.attr,
370366 	&suspend_time.attr,
371
-#if defined(CONFIG_ROCKCHIP_SIP)
372
-	&suspend_wfi_time.attr,
373
-#endif
374367 	NULL,
375368 };
376369 static struct attribute_group attr_group = {