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set/clear port bits with atomic instructions instead of read-modify-write, saves time+space, allows port usage in ISR

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4022 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jörg Hohensohn 2003-11-06 01:34:50 +00:00
parent 9e95757928
commit 75bab49a54
8 changed files with 88 additions and 67 deletions
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28
firmware/mpeg.c
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@ -740,7 +740,7 @@ void drain_dma_buffer(void)
{
while((*((volatile unsigned char *)PBDR_ADDR) & 0x40))
{
PADR |= 0x800;
__set_bit_constant(11-8, &PADRH);
while(*((volatile unsigned char *)PBDR_ADDR) & 0x80);
@ -748,7 +748,7 @@ void drain_dma_buffer(void)
the data is read */
asm(" nop\n nop\n nop\n");
asm(" nop\n nop\n nop\n");
PADR &= ~0x800;
__clear_bit_constant(11-8, &PADRH);
while(!(*((volatile unsigned char *)PBDR_ADDR) & 0x80));
}
@ -757,7 +757,7 @@ void drain_dma_buffer(void)
{
while((*((volatile unsigned char *)PBDR_ADDR) & 0x40))
{
PADR &= ~0x800;
__clear_bit_constant(11-8, &PADRH);
while(*((volatile unsigned char *)PBDR_ADDR) & 0x80);
@ -766,7 +766,7 @@ void drain_dma_buffer(void)
asm(" nop\n nop\n nop\n");
asm(" nop\n nop\n nop\n");
PADR |= 0x800;
__set_bit_constant(11-8, &PADRH);
while(!(*((volatile unsigned char *)PBDR_ADDR) & 0x80));
}
@ -814,7 +814,7 @@ static void dma_tick(void)
while((*((volatile unsigned char *)PBDR_ADDR) & 0x40)
&& i < 30)
{
PADR |= 0x800;
__set_bit_constant(11-8, &PADRH);
while(*((volatile unsigned char *)PBDR_ADDR) & 0x80);
@ -828,7 +828,7 @@ static void dma_tick(void)
i++;
PADR &= ~0x800;
__clear_bit_constant(11-8, &PADRH);
/* No wait for /RTW, cause it's not necessary */
}
@ -839,7 +839,7 @@ static void dma_tick(void)
while((*((volatile unsigned char *)PBDR_ADDR) & 0x40)
&& i < 30)
{
PADR &= ~0x800;
__clear_bit_constant(11-8, &PADRH);
while(*((volatile unsigned char *)PBDR_ADDR) & 0x80);
@ -853,7 +853,7 @@ static void dma_tick(void)
i++;
PADR |= 0x800;
__set_bit_constant(11-8, &PADRH);
/* No wait for /RTW, cause it's not necessary */
}
@ -2169,7 +2169,7 @@ static void setup_sci0(void)
PBCR1 = (PBCR1 & 0x0cff) | 0x1208;
/* Set PB12 to output */
PBIOR |= 0x1000;
__set_bit_constant(12-8, &PBIORH);
/* Disable serial port */
SCR0 = 0x00;
@ -2190,8 +2190,8 @@ static void setup_sci0(void)
IPRD &= 0x0ff0;
/* set PB15 and PB14 to inputs */
PBIOR &= 0x7fff;
PBIOR &= 0xbfff;
__clear_bit_constant(15-8, &PBIORH);
__clear_bit_constant(14-8, &PBIORH);
/* Enable End of DMA interrupt at prio 8 */
IPRC = (IPRC & 0xf0ff) | 0x0800;
@ -3144,7 +3144,7 @@ void mpeg_init(int volume, int bass, int treble, int balance, int loudness,
setup_sci0();
#ifdef HAVE_MAS3587F
PAIOR |= 0x0800; /* output for /PR */
__set_bit_constant(11-8, &PAIORH); /* output for /PR */
init_playback();
mas_version_code = mas_readver();
@ -3157,9 +3157,9 @@ void mpeg_init(int volume, int bass, int treble, int balance, int loudness,
#endif
#ifdef HAVE_MAS3507D
PBDR &= ~0x20;
__clear_bit_constant(5, &PBDRL);
sleep(HZ/5);
PBDR |= 0x20;
__set_bit_constant(5, &PBDRL);
sleep(HZ/5);
/* set IRQ6 to edge detect */