freemyipod r521 - Code Review

Repository:	freemyipod
Revision:	< r520‎ \| r521 \| r522 >
Date:	02:31, 6 February 2011
Author:	theseven
Status:	new
Tags:
Comment:	emCORE: iPod Classic LCD driver: Make LCD updates more reliable. The root cause (mutexes being locked from an IRQ handler) isn't fixed yet, but the probability of triggering the clash has been reduced a lot.
Modified paths:	/emcore/trunk/target/ipodnano3g/lcd.c (modified) (history)

Diff [purge]

Index: emcore/trunk/target/ipodnano3g/lcd.c
—	—	@@ -93,9 +93,7 @@
94	94	void displaylcd_sync() ICODE_ATTR;
95	95	void displaylcd_sync()
96	96	{
97		~~- mutex_lock(&lcd_mutex, TIMEOUT_BLOCK);~~
98	97	while (displaylcd_busy()) sleep(100);
99		~~- mutex_unlock(&lcd_mutex);~~
100	98	}
101	99
102	100	void displaylcd_setup(unsigned int startx, unsigned int endx,
—	—	@@ -103,8 +101,8 @@
104	102	void displaylcd_setup(unsigned int startx, unsigned int endx,
105	103	unsigned int starty, unsigned int endy)
106	104	{
	105	+ displaylcd_sync();
107	106	mutex_lock(&lcd_mutex, TIMEOUT_BLOCK);
108		~~- displaylcd_sync();~~
109	107	if (lcd_detect() & 2)
110	108	{
111	109	lcd_send_cmd(0x210);
—	—	@@ -150,7 +148,7 @@
151	149	lli->nextlli = last ? NULL : &lcd_lli[i + 1];
152	150	lli->control = 0x70240000 \| (last ? pixels : 0xfff)
153	151	\| (last ? 0x80000000 : 0) \| (solid ? 0 : 0x4000000);
154		~~- data = (void*)(((uint32_t)data) + 0x1ffe);~~
	152	+ if (!solid) data = (void*)(((uint32_t)data) + 0x1ffe);
155	153	}
156	154	clean_dcache();
157	155	DMAC0C4CONFIG = 0x88c1;
—	—	@@ -301,6 +299,7 @@
302	300	void filllcd(unsigned int x, unsigned int y, unsigned int width, unsigned int height, int color)
303	301	{
304	302	if (width * height <= 0) return;
	303	+ displaylcd_sync();
305	304	mutex_lock(&lcd_mutex, TIMEOUT_BLOCK);
306	305	lcd_color = color;
307	306	displaylcd_dither(x, y, width, height, &lcd_color, 0, 0, 0, true);