static void par_close(PROGRAMMER * pgm)
{
/*
* Restore pin values before closing,
* but ensure that buffers are turned off.
*/
ppi_setall(&pgm->fd, PPIDATA, pgm->ppidata);
ppi_setall(&pgm->fd, PPICTRL, pgm->ppictrl);
par_setmany(pgm, pgm->pinno[PPI_AVR_BUFF], 1);
/*
* Handle exit specs.
*/
switch (pgm->exit_reset) {
case EXIT_RESET_ENABLED:
par_setpin(pgm, pgm->pinno[PIN_AVR_RESET], 0);
break;
case EXIT_RESET_DISABLED:
par_setpin(pgm, pgm->pinno[PIN_AVR_RESET], 1);
break;
case EXIT_RESET_UNSPEC:
/* Leave it alone. */
break;
}
switch (pgm->exit_datahigh) {
case EXIT_DATAHIGH_ENABLED:
ppi_setall(&pgm->fd, PPIDATA, 0xff);
break;
case EXIT_DATAHIGH_DISABLED:
ppi_setall(&pgm->fd, PPIDATA, 0x00);
break;
case EXIT_DATAHIGH_UNSPEC:
/* Leave it alone. */
break;
}
switch (pgm->exit_vcc) {
case EXIT_VCC_ENABLED:
par_setmany(pgm, pgm->pinno[PPI_AVR_VCC], 1);
break;
case EXIT_VCC_DISABLED:
par_setmany(pgm, pgm->pinno[PPI_AVR_VCC], 0);
break;
case EXIT_VCC_UNSPEC:
/* Leave it alone. */
break;
}
ppi_close(&pgm->fd);
pgm->fd.ifd = -1;
}
static int __init ppi_adc_init(void) {
int ret;
ret = dma_init();
if(ret) {
return ret;
}
ret = ppi_init();
if(ret) {
dma_close();
return ret;
}
ret = device_init();
if(ret) {
ppi_close();
dma_close();
return ret;
}
/* Disable everything */
disable_dma(CH_PPI);
bfin_write_PPI_CONTROL(bfin_read_PPI_CONTROL() & (~PORT_EN));
SSYNC();
return 0;
}
static void __exit ppi_adc_close(void) {
device_close();
ppi_close();
dma_close();
}