int pcmcia_voltage_set(int slot, int vcc, int vpp)
{
#ifndef CONFIG_NSCU
u_long reg;
uint32_t pipr = 0;
debug("voltage_set: " PCMCIA_BOARD_MSG
" Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
/*
* Disable PCMCIA buffers (isolate the interface)
* and assert RESET signal
*/
debug("Disable PCMCIA buffers and assert RESET\n");
reg = PCMCIA_PGCRX(slot);
reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
reg |= NSCU_GCRX_CXOE; /* active low */
PCMCIA_PGCRX(slot) = reg;
udelay(500);
debug("PCMCIA power OFF\n");
power_config(slot);
power_off(slot);
switch(vcc) {
case 0: break;
case 33: power_on_3_3(slot); break;
case 50: power_on_5_0(slot); break;
default: goto done;
}
/* Checking supported voltages */
pipr = debug_get_pipr();
debug("PIPR: 0x%x --> %s\n", pipr,
(pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
if (vcc)
debug("PCMCIA powered at %sV\n", (vcc == 50) ? "5.0" : "3.3");
else
debug("PCMCIA powered down\n");
done:
debug("Enable PCMCIA buffers and stop RESET\n");
reg = PCMCIA_PGCRX(slot);
reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
reg &= ~NSCU_GCRX_CXOE; /* active low */
PCMCIA_PGCRX(slot) = reg;
udelay(500);
debug("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n", slot+'A');
#endif /* CONFIG_NSCU */
return 0;
}
int pcmcia_off (void)
{
int i;
pcmcia_win_t *win;
printf ("Disable PCMCIA " PCMCIA_SLOT_MSG "\n");
/* clear interrupt state, and disable interrupts */
((immap_t *)CFG_IMMR)->im_pcmcia.pcmc_pscr = PCMCIA_MASK(_slot_);
((immap_t *)CFG_IMMR)->im_pcmcia.pcmc_per &= ~PCMCIA_MASK(_slot_);
/* turn off interrupt and disable CxOE */
PCMCIA_PGCRX(_slot_) = __MY_PCMCIA_GCRX_CXOE;
/* turn off memory windows */
win = (pcmcia_win_t *)(&((immap_t *)CFG_IMMR)->im_pcmcia.pcmc_pbr0);
for (i=0; i<PCMCIA_MEM_WIN_NO; ++i) {
/* disable memory window */
win->or = 0;
++win;
}
/* turn off voltage */
pcmcia_voltage_set(_slot_, 0, 0);
/* disable external hardware */
printf ("Shutdown and Poweroff " PCMCIA_SLOT_MSG "\n");
pcmcia_hardware_disable(_slot_);
return 0;
}
int pcmcia_hardware_disable(int slot)
{
u_long reg;
debug("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
/* remove all power */
power_off(slot);
debug("Disable PCMCIA buffers and assert RESET\n");
reg = 0;
reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
reg |= NSCU_GCRX_CXOE; /* active low */
PCMCIA_PGCRX(slot) = reg;
udelay(10000);
return (0);
}
int pcmcia_hardware_enable(int slot)
{
immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
uint reg, mask;
debug("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
udelay(10000);
/*
* Configure SIUMCR to enable PCMCIA port B
* (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
*/
/* Set DBGC to 00 */
clrbits_be32(&immap->im_siu_conf.sc_siumcr, SIUMCR_DBGC11);
/* Clear interrupt state, and disable interrupts */
out_be32(&immap->im_pcmcia.pcmc_pscr, PCMCIA_MASK(slot));
clrbits_be32(&immap->im_pcmcia.pcmc_per, PCMCIA_MASK(slot));
/*
* Disable interrupts, DMA, and PCMCIA buffers
* (isolate the interface) and assert RESET signal
*/
debug("Disable PCMCIA buffers and assert RESET\n");
reg = 0;
reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
reg |= NSCU_GCRX_CXOE;
PCMCIA_PGCRX(slot) = reg;
udelay(500);
power_config(slot);
power_off(slot);
/*
* Make sure there is a card in the slot, then configure the interface.
*/
udelay(10000);
reg = debug_get_pipr();
debug("[%d] %s: PIPR(%p)=0x%x\n", __LINE__, __FUNCTION__,
&immap->im_pcmcia.pcmc_pipr, reg);
if (check_card_is_absent(slot)) {
printf (" No Card found\n");
return (1);
}
/*
* Power On.
*/
mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
reg = in_be32(&immap->im_pcmcia.pcmc_pipr);
debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
reg,
(reg & PCMCIA_VS1(slot)) ? "n" : "ff",
(reg & PCMCIA_VS2(slot)) ? "n" : "ff");
if ((reg & mask) == mask) {
power_on_5_0(slot);
puts (" 5.0V card found: ");
} else {
power_on_3_3(slot);
puts (" 3.3V card found: ");
}
#if 0
/* VCC switch error flag, PCMCIA slot INPACK_ pin */
cp->cp_pbdir &= ~(0x0020 | 0x0010);
cp->cp_pbpar &= ~(0x0020 | 0x0010);
udelay(500000);
#endif
udelay(1000);
debug("Enable PCMCIA buffers and stop RESET\n");
reg = PCMCIA_PGCRX(slot);
reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
reg &= ~NSCU_GCRX_CXOE;
PCMCIA_PGCRX(slot) = reg;
udelay(250000); /* some cards need >150 ms to come up :-( */
debug("# hardware_enable done\n");
return (0);
}
int pcmcia_hardware_enable (int slot)
{
volatile immap_t *immap;
volatile cpm8xx_t *cp;
volatile pcmconf8xx_t *pcmp;
volatile sysconf8xx_t *sysp;
uint reg, mask;
debug ("hardware_enable: GTH Slot %c\n", 'A' + slot);
immap = (immap_t *) CONFIG_SYS_IMMR;
sysp = (sysconf8xx_t *) (&(((immap_t *) CONFIG_SYS_IMMR)->im_siu_conf));
pcmp = (pcmconf8xx_t *) (&(((immap_t *) CONFIG_SYS_IMMR)->im_pcmcia));
cp = (cpm8xx_t *) (&(((immap_t *) CONFIG_SYS_IMMR)->im_cpm));
/* clear interrupt state, and disable interrupts */
pcmp->pcmc_pscr = PCMCIA_MASK (_slot_);
pcmp->pcmc_per &= ~PCMCIA_MASK (_slot_);
/*
* Disable interrupts, DMA, and PCMCIA buffers
* (isolate the interface) and assert RESET signal
*/
debug ("Disable PCMCIA buffers and assert RESET\n");
reg = 0;
reg |= __MY_PCMCIA_GCRX_CXRESET; /* active high */
reg |= __MY_PCMCIA_GCRX_CXOE; /* active low */
PCMCIA_PGCRX (_slot_) = reg;
udelay (500);
/*
* Make sure there is a card in the slot,
* then configure the interface.
*/
udelay (10000);
debug ("[%d] %s: PIPR(%p)=0x%x\n",
__LINE__, __FUNCTION__,
&(pcmp->pcmc_pipr), pcmp->pcmc_pipr);
if (pcmp->pcmc_pipr & 0x98000000) {
printf (" No Card found\n");
return (1);
}
mask = PCMCIA_VS1 (slot) | PCMCIA_VS2 (slot);
reg = pcmp->pcmc_pipr;
debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
reg,
(reg & PCMCIA_VS1 (slot)) ? "n" : "ff",
(reg & PCMCIA_VS2 (slot)) ? "n" : "ff");
debug ("Enable PCMCIA buffers and stop RESET\n");
reg = PCMCIA_PGCRX (_slot_);
reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
PCMCIA_PGCRX (_slot_) = reg;
udelay (250000); /* some cards need >150 ms to come up :-( */
debug ("# hardware_enable done\n");
return 0;
}
