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#include <common.h>
#include <mpc8xx.h>
#include <pcmcia.h>
#undef CONFIG_PCMCIA
#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
#define CONFIG_PCMCIA
#endif
#if (CONFIG_COMMANDS & CFG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
#define CONFIG_PCMCIA
#endif
#ifdef CONFIG_PCMCIA
#define PCMCIA_BOARD_MSG "ICU862"
static void cfg_port_B (void)
{
volatile immap_t *immap;
volatile cpm8xx_t *cp;
uint reg;
immap = (immap_t *)CFG_IMMR;
cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
/*
* Configure Port B for TPS2205 PC-Card Power-Interface Switch
*
* Switch off all voltages, assert shutdown
*/
reg = cp->cp_pbdat;
reg |= (TPS2205_VPP_PGM | TPS2205_VPP_VCC | /* VAVPP => Hi-Z */
TPS2205_VCC3 | TPS2205_VCC5 | /* VAVCC => Hi-Z */
TPS2205_SHDN); /* enable switch */
cp->cp_pbdat = reg;
cp->cp_pbpar &= ~(TPS2205_INPUTS | TPS2205_OUTPUTS);
reg = cp->cp_pbdir & ~(TPS2205_INPUTS);
cp->cp_pbdir = reg | TPS2205_OUTPUTS;
debug ("Set Port B: PAR: %08x DIR: %08x DAT: %08x\n",
cp->cp_pbpar, cp->cp_pbdir, cp->cp_pbdat);
}
int pcmcia_hardware_enable(int slot)
{
volatile immap_t *immap;
volatile cpm8xx_t *cp;
volatile pcmconf8xx_t *pcmp;
volatile sysconf8xx_t *sysp;
uint reg, pipr, mask;
int i;
debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
udelay(10000);
immap = (immap_t *)CFG_IMMR;
sysp = (sysconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_siu_conf));
pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
/* Configure Port B for TPS2205 PC-Card Power-Interface Switch */
cfg_port_B ();
/*
* Configure SIUMCR to enable PCMCIA port B
* (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
*/
sysp->sc_siumcr &= ~SIUMCR_DBGC11; /* set DBGC to 00 */
/* 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 & (0x18000000 >> (slot << 4))) {
printf (" No Card found\n");
return (1);
}
/*
* Power On: Set VAVCC to 3.3V or 5V, set VAVPP to Hi-Z
*/
mask = PCMCIA_VS1(slot) | PCMCIA_VS2(slot);
pipr = pcmp->pcmc_pipr;
debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
pipr,
(reg&PCMCIA_VS1(slot))?"n":"ff",
(reg&PCMCIA_VS2(slot))?"n":"ff");
reg = cp->cp_pbdat;
if ((pipr & mask) == mask) {
reg |= (TPS2205_VPP_PGM | TPS2205_VPP_VCC | /* VAVPP => Hi-Z */
TPS2205_VCC3); /* 3V off */
reg &= ~(TPS2205_VCC5); /* 5V on */
puts (" 5.0V card found: ");
} else {
reg |= (TPS2205_VPP_PGM | TPS2205_VPP_VCC | /* VAVPP => Hi-Z */
TPS2205_VCC5); /* 5V off */
reg &= ~(TPS2205_VCC3); /* 3V on */
puts (" 3.3V card found: ");
}
debug ("\nPB DAT: %08x -> 3.3V %s 5.0V %s VPP_PGM %s VPP_VCC %s\n",
reg,
(reg & TPS2205_VCC3) ? "off" : "on",
(reg & TPS2205_VCC5) ? "off" : "on",
(reg & TPS2205_VPP_PGM) ? "off" : "on",
(reg & TPS2205_VPP_VCC) ? "off" : "on" );
cp->cp_pbdat = reg;
/* Wait 500 ms; use this to check for over-current */
for (i=0; i<5000; ++i) {
if ((cp->cp_pbdat & TPS2205_OC) == 0) {
printf (" *** Overcurrent - Safety shutdown ***\n");
cp->cp_pbdat &= ~(TPS2205_SHDN);
return (1);
}
udelay (100);
}
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);
}
#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
int pcmcia_hardware_disable(int slot)
{
volatile immap_t *immap;
volatile cpm8xx_t *cp;
volatile pcmconf8xx_t *pcmp;
u_long reg;
debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
immap = (immap_t *)CFG_IMMR;
cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
/* Shut down */
cp->cp_pbdat &= ~(TPS2205_SHDN);
/* Configure PCMCIA General Control Register */
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(10000);
return (0);
}
#endif /* CFG_CMD_PCMCIA */
int pcmcia_voltage_set(int slot, int vcc, int vpp)
{
volatile immap_t *immap;
volatile cpm8xx_t *cp;
volatile pcmconf8xx_t *pcmp;
u_long reg;
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);
immap = (immap_t *)CFG_IMMR;
cp = (cpm8xx_t *)(&(((immap_t *)CFG_IMMR)->im_cpm));
pcmp = (pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
/*
* 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 */
PCMCIA_PGCRX(_slot_) = reg;
udelay(500);
/*
* Configure Port C pins for
* 5 Volts Enable and 3 Volts enable,
* Turn all power pins to Hi-Z
*/
debug ("PCMCIA power OFF\n");
cfg_port_B (); /* Enables switch, but all in Hi-Z */
reg = cp->cp_pbdat;
switch(vcc) {
case 0: break; /* Switch off */
case 33: reg &= ~TPS2205_VCC3; break; /* Switch on 3.3V */
case 50: reg &= ~TPS2205_VCC5; break; /* Switch on 5.0V */
default: goto done;
}
/* Checking supported voltages */
debug ("PIPR: 0x%x --> %s\n",
pcmp->pcmc_pipr,
(pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
cp->cp_pbdat = reg;
#ifdef DEBUG
{
char *s;
if ((reg & TPS2205_VCC3) == 0) {
s = "at 3.3V";
} else if ((reg & TPS2205_VCC5) == 0) {
s = "at 5.0V";
} else {
s = "down";
}
printf ("PCMCIA powered %s\n", s);
}
#endif
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 */
PCMCIA_PGCRX(_slot_) = reg;
udelay(500);
debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n",
slot+'A');
return (0);
}
#endif /* CONFIG_PCMCIA */
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