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added PCI-to-PCI bridge cache flush

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added 36898 clock rate


git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4538 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
beveloper
2003-09-07 22:29:27 +00:00
parent 45a372ac3d
commit e4981be8ac
2 changed files with 17 additions and 4 deletions
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src/add-ons/kernel/drivers/audio/ac97/ich/ich.c
+16 -3
View File
@@ -141,6 +141,7 @@ void start_chan(ich_chan *chan)
void stop_chan(ich_chan *chan)
{
ich_reg_write_8(chan->regbase + ICH_REG_X_CR, ich_reg_read_8(chan->regbase + ICH_REG_X_CR) & ~CR_RPBM);
ich_reg_read_8(chan->regbase + ICH_REG_X_CR); // force PCI-to-PCI bridge cache flush
chan->running = false;
snooze(10000); // 10 ms
}
@@ -149,6 +150,7 @@ void reset_chan(ich_chan *chan)
{
int i, cr;
ich_reg_write_8(chan->regbase + ICH_REG_X_CR, 0);
ich_reg_read_8(chan->regbase + ICH_REG_X_CR); // force PCI-to-PCI bridge cache flush
snooze(10000); // 10 ms
chan->running = false;
@@ -200,6 +202,7 @@ bool interrupt_test(void)
// disable interrupts & busmaster transfer
ich_reg_write_8(chan_po->regbase + ICH_REG_X_CR, 0);
ich_reg_read_8(chan_po->regbase + ICH_REG_X_CR); // force PCI-to-PCI bridge cache flush
snooze(25000);
@@ -414,15 +417,24 @@ ich_clock_calibrate()
#if DEBUG > 0
{
int i;
for (i = 0; i < 20; i++)
LOG(("ich_clock_calibrate: rate %ld\n", ich_clock_get()));
uint32 r = 0;
for (i = 0; i < 20; i++) {
uint32 c = ich_clock_get();
LOG(("ich_clock_calibrate: rate %ld\n", c));
r += c;
}
r /= 20;
LOG(("ich_clock_calibrate: mean rate %ld\n", r));
}
#endif
rate = ich_clock_get();
LOG(("ich_clock_calibrate: rate %ld\n", rate));
if (rate > (44100 - 1000) && rate < (44100 + 1000)) {
if (rate > (36898 - 1000) && rate < (36898 + 1000)) {
LOG(("ich_clock_calibrate: setting clock 36898\n"));
ac97_set_clock(config->ac97, 36898);
} else if (rate > (44100 - 1000) && rate < (44100 + 1000)) {
LOG(("ich_clock_calibrate: setting clock 44100\n"));
ac97_set_clock(config->ac97, 44100);
} else if (rate > (48000 - 1000) && rate < (48000 + 1000)) {
@@ -481,6 +493,7 @@ init_driver(void)
/* do a cold reset */
LOG(("cold reset\n"));
ich_reg_write_32(ICH_REG_GLOB_CNT, 0);
ich_reg_read_32(ICH_REG_GLOB_CNT); // force PCI-to-PCI bridge cache flush
snooze(50000); // 50 ms
ich_reg_write_32(ICH_REG_GLOB_CNT, CNT_COLD | CNT_PRIE);
LOG(("cold reset finished\n"));
src/add-ons/kernel/drivers/audio/ac97/ich/ich.h
+1 -1
View File
@@ -31,7 +31,7 @@
#include "debug.h"
#include "hardware.h"
#define VERSION_NUMBER "1.6a"
#define VERSION_NUMBER "1.6b"
#if DEBUG
#define VERSION_DEBUG " (DEBUG)"