From 4b811a8abecf3ca8ee0b8a02214982a87d013e2f Mon Sep 17 00:00:00 2001
From: notaz <notasas@gmail.com>
Date: Wed, 9 Jul 2008 19:52:17 +0000
Subject: [PATCH] PSP sleep mode fixed, hopefully for read; 1.50 release

git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@538 be3aeb3a-fb24-0410-a615-afba39da0efa
---
 base_readme.txt |  3 ++-
 psp/emu.h       |  1 +
 psp/main.c      |  7 ++++---
 psp/psp.c       | 14 +++++++++++---
 4 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/base_readme.txt b/base_readme.txt
index a6586e6..f99a4c0 100644
--- a/base_readme.txt
+++ b/base_readme.txt
@@ -657,7 +657,7 @@ Changelog
   * Improved renderer performance for shadow/hilight mode.
   * Added a hack for YM2612 frequency overflow issue (bleep noises
     in Shaq Fu, Spider-Man - The Animated Series (intro music), etc.)
-    Credits to Nemesis @ spritesmind forum. Works only sound rate
+    Credits to Nemesis @ spritesmind forum. Works only if sound rate
     is set to 44kHz.
   + Implemented some sprite rendering improvements, as suggested by
     Exophase. Games with lots of sprites now perform better.
@@ -675,6 +675,7 @@ Changelog
   * Fixed a bug in Sega CD savestate loader, where the game would
     sometimes crash after load.
   * Fixed a crash of games using eeprom (introduced in 1.40b).
+  * PSP: fixed suspend/resume (hopefully for real).
 
 1.40c
   * Fixed a problem with sound in Marble Madness.
diff --git a/psp/emu.h b/psp/emu.h
index 61e4e7a..1ef9450 100644
--- a/psp/emu.h
+++ b/psp/emu.h
@@ -15,6 +15,7 @@ enum TPicoGameState {
 	PGS_Menu,
 	PGS_RestartRun,
 	PGS_Suspending,
+	PGS_SuspendAck,
 };
 
 extern char romFileName[];
diff --git a/psp/main.c b/psp/main.c
index 4c7eef6..d970f8a 100644
--- a/psp/main.c
+++ b/psp/main.c
@@ -12,7 +12,6 @@
 #include "../common/emu.h"
 #include "../common/config.h"
 #include "../common/lprintf.h"
-#include "version.h"
 
 #ifdef GPROF
 #include <pspprof.h>
@@ -32,7 +31,6 @@ void dummy(void)
 
 int pico_main(void)
 {
-	lprintf("\nPicoDrive v" VERSION " " __DATE__ " " __TIME__ "\n");
 	psp_init();
 
 	emu_prepareDefaultConfig();
@@ -71,8 +69,11 @@ int pico_main(void)
 				break;
 
 			case PGS_Suspending:
-				while (engineState == PGS_Suspending)
+				while (engineState == PGS_Suspending || engineState == PGS_SuspendAck) {
+					if (engineState == PGS_Suspending)
+						engineState = PGS_SuspendAck;
 					psp_wait_suspend();
+				}
 				break;
 
 			case PGS_RestartRun:
diff --git a/psp/psp.c b/psp/psp.c
index fd55b6c..4046e29 100644
--- a/psp/psp.c
+++ b/psp/psp.c
@@ -20,19 +20,20 @@
 #include "psp.h"
 #include "emu.h"
 #include "../common/lprintf.h"
+#include "version.h"
 
 extern int pico_main(void);
 
 #ifndef FW15
 
-PSP_MODULE_INFO("PicoDrive", 0, 1, 40);
+PSP_MODULE_INFO("PicoDrive", 0, 1, 50);
 PSP_HEAP_SIZE_MAX();
 
 int main() { return pico_main(); }	/* just a wrapper */
 
 #else
 
-PSP_MODULE_INFO("PicoDrive", 0x1000, 1, 40);
+PSP_MODULE_INFO("PicoDrive", 0x1000, 1, 50);
 PSP_MAIN_THREAD_ATTR(0);
 
 int main()
@@ -79,16 +80,20 @@ static int exit_callback(int arg1, int arg2, void *common)
 static int power_callback(int unknown, int pwrflags, void *common)
 {
 	static int old_state = PGS_Menu;
+	int i;
 
 	lprintf("power_callback: flags: 0x%08X\n", pwrflags);
 
 	/* check for power switch and suspending as one is manual and the other automatic */
 	if (pwrflags & PSP_POWER_CB_POWER_SWITCH || pwrflags & PSP_POWER_CB_SUSPENDING || pwrflags & PSP_POWER_CB_STANDBY)
 	{
-		if (engineState != PGS_Suspending) {
+		if (engineState != PGS_Suspending && engineState != PGS_SuspendAck) {
 			old_state = engineState;
 			engineState = PGS_Suspending;
 		}
+		for (i = 0; i < 10 && engineState != PGS_SuspendAck; i++)
+			sceKernelDelayThread(100*1024);
+
 	}
 	else if (pwrflags & PSP_POWER_CB_RESUME_COMPLETE)
 	{
@@ -129,6 +134,7 @@ void psp_init(void)
 
 	main_thread_id = sceKernelGetThreadId();
 
+	lprintf("\n%s\n", "PicoDrive v" VERSION " " __DATE__ " " __TIME__);
 	lprintf("running on %08x kernel\n", sceKernelDevkitVersion()),
 	lprintf("entered psp_init, threadId %08x, priority %i\n", main_thread_id,
 		sceKernelGetThreadCurrentPriority());
@@ -304,6 +310,8 @@ typedef struct _log_entry
 static log_entry *le_root = NULL;
 #endif
 
+/* strange: if this function leaks memory (before psp_init() call?),
+ * resume after suspend breaks on 3.90 */
 void lprintf(const char *fmt, ...)
 {
 	va_list vl;
-- 
2.39.2