/* This clears the reset bit to enable monitoring immediately if monitoring
recording sources or always if playback is in progress - we might be
switching samplerates on the fly */
void pcm_dma_apply_settings(void)
{
int level = set_irq_level(DMA_IRQ_LEVEL);
/* remember table entry */
freq_ent = pcm_freq_parms[pcm_fsel];
/* Reprogramming bits 15-12 requires FIFO to be in a reset
condition - Users Manual 17-8, Note 11 */
or_l(IIS_FIFO_RESET, &IIS_PLAY);
/* Important for TLV320 - this must happen in the correct order
or starting recording will sound absolutely awful once in
awhile - audiohw_set_frequency then coldfire_set_pllcr_audio_bits
*/
IIS_PLAY = IIS_PLAY_DEFPARM | IIS_FIFO_RESET;
restore_irq(level);
audiohw_set_frequency(pcm_fsel);
coldfire_set_pllcr_audio_bits(PLLCR_SET_AUDIO_BITS_DEFPARM);
level = set_irq_level(DMA_IRQ_LEVEL);
IIS_PLAY = IIS_PLAY_DEFPARM;
if ((DCR0 & DMA_EEXT) != 0 && is_playback_monitoring())
PDOR3 = 0; /* Kick FIFO out of reset by writing to it */
restore_irq(level);
} /* pcm_dma_apply_settings */
void power_off(void)
{
lcd_remote_poweroff();
set_irq_level(DISABLE_INTERRUPTS);
and_l(~0x00000008, &GPIO_OUT); /* Set KEEPACT low */
asm("halt");
}
static void iis_play_reset_if_playback(bool if_playback)
{
int level = set_irq_level(DMA_IRQ_LEVEL);
if (is_playback_monitoring() == if_playback)
iis_play_reset();
restore_irq(level);
}
void power_off(void)
{
lcd_shutdown();
set_irq_level(DISABLE_INTERRUPTS);
and_l(~(1<<21), &GPIO1_OUT); /* pull KEEPACT low */
asm("halt");
while(1);
}
void audio_set_output_source(int source)
{
int level = set_irq_level(DMA_IRQ_LEVEL);
unsigned long txsrc;
if ((unsigned)source >= AUDIO_NUM_SOURCES)
txsrc = (3 << 8); /* playback, PDOR3 */
else
txsrc = (4 << 8); /* recording, iis1RcvData */
IIS1CONFIG = (IIS1CONFIG & ~(7 << 8)) | txsrc;
restore_irq(level);
} /* audio_set_output_source */
const void * pcm_play_dma_get_peak_buffer(int *count)
{
unsigned long addr, cnt;
/* Make sure interrupt doesn't change the second value after we read the
* first value. */
int level = set_irq_level(DMA_IRQ_LEVEL);
addr = SAR0;
cnt = BCR0;
restore_irq(level);
*count = (cnt & 0xffffff) >> 2;
return (void *)((addr + 2) & ~3);
} /* pcm_play_dma_get_peak_buffer */
void audio_set_output_source(int source)
{
static const unsigned char txsrc_select[AUDIO_NUM_SOURCES+1] =
{
[AUDIO_SRC_PLAYBACK+1] = 3, /* PDOR3 */
[AUDIO_SRC_MIC+1] = 4, /* IIS1 RcvData */
[AUDIO_SRC_LINEIN+1] = 4, /* IIS1 RcvData */
[AUDIO_SRC_FMRADIO+1] = 4, /* IIS1 RcvData */
};
int level = set_irq_level(DMA_IRQ_LEVEL);
if ((unsigned)source >= AUDIO_NUM_SOURCES)
source = AUDIO_SRC_PLAYBACK;
/* route incoming audio samples to DAC */
IIS2CONFIG = (IIS2CONFIG & ~(7 << 8)) | (txsrc_select[source+1] << 8);
restore_irq(level);
}
bool timer_set(long cycles, bool start)
{
int oldlevel;
unsigned int divider=cycles, prescaler=0;
if(cycles<1)
return false;
oldlevel = set_irq_level(HIGHEST_IRQ_LEVEL);
bitset16(&IO_CLK_MOD2, CLK_MOD2_TMR0); /* enable TIMER0 clock */
IO_TIMER0_TMMD = CONFIG_TIMER0_TMMD_STOP;
if (start && pfn_unregister != NULL)
{
pfn_unregister();
pfn_unregister = NULL;
}
oldlevel = disable_irq_save();
/* Increase prescale values starting from 0 to make the cycle count fit */
while(divider>65535 && prescaler<1024)
{
prescaler++;
divider=cycles/(prescaler+1);
}
IO_TIMER0_TMPRSCL = prescaler;
IO_TIMER0_TMDIV = divider;
restore_irq(oldlevel);
return true;
}
void main(void)
{
unsigned char* loadbuffer;
int buffer_size;
int rc;
int(*kernel_entry)(void);
/* Make sure interrupts are disabled */
set_irq_level(IRQ_DISABLED);
set_fiq_status(FIQ_DISABLED);
system_init();
kernel_init();
/* Now enable interrupts */
set_irq_level(IRQ_ENABLED);
set_fiq_status(FIQ_ENABLED);
lcd_init();
backlight_init();
font_init();
button_init();
usb_init();
power_init();
// enable_irq();
// enable_fiq();
adc_init();
lcd_setfont(FONT_SYSFIXED);
/* Show debug messages if button is pressed */
// if(button_read_device())
verbose = true;
printf("Rockbox boot loader");
printf("Version %s", rbversion);
/* Enter USB mode without USB thread */
if(usb_detect() == USB_INSERTED)
{
const char msg[] = "Bootloader USB mode";
reset_screen();
lcd_putsxy( (LCD_WIDTH - (SYSFONT_WIDTH * strlen(msg))) / 2,
(LCD_HEIGHT - SYSFONT_HEIGHT) / 2, msg);
lcd_update();
ide_power_enable(true);
storage_enable(false);
sleep(HZ/20);
usb_enable(true);
while (usb_detect() == USB_INSERTED)
{
storage_spin(); /* Prevent the drive from spinning down */
sleep(HZ);
}
usb_enable(false);
reset_screen();
lcd_update();
}
sleep(50);
printf("ATA");
rc = storage_init();
if(rc)
{
reset_screen();
error(EATA, rc, true);
}
printf("filesystem");
filesystem_init();
printf("mount");
rc = disk_mount_all();
if (rc<=0)
{
error(EDISK,rc, true);
}
printf("Loading firmware");
loadbuffer = (unsigned char*) 0x00900000;
buffer_size = (unsigned char*)0x01900000 - loadbuffer;
rc = load_firmware(loadbuffer, BOOTFILE, buffer_size);
if(rc <= EFILE_EMPTY)
error(EBOOTFILE, rc, true);
kernel_entry = (void*) loadbuffer;
rc = kernel_entry();
/* Should not get here! */
return rc;
}