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u-boot/drivers/tqm8xx_pcmcia.c
Wolfgang Denk 966083e95f More code cleanup
2006-07-21 15:24:56 +02:00

330 lines
7.7 KiB
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/* -------------------------------------------------------------------- */
/* TQM8xxL Boards by TQ Components */
/* SC8xx Boards by SinoVee Microsystems */
/* -------------------------------------------------------------------- */
#include <common.h>
#ifdef CONFIG_8xx
#include <mpc8xx.h>
#endif
#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
#if defined(CONFIG_PCMCIA) \
&& (defined(CONFIG_TQM8xxL) || defined(CONFIG_SVM_SC8xx))
#if defined(CONFIG_VIRTLAB2)
#define PCMCIA_BOARD_MSG "Virtlab2"
#elif defined(CONFIG_TQM8xxL)
#define PCMCIA_BOARD_MSG "TQM8xxL"
#elif defined(CONFIG_SVM_SC8xx)
#define PCMCIA_BOARD_MSG "SC8xx"
#endif
#if defined(CONFIG_NSCU)
#define power_config(slot) do {} while (0)
#define power_off(slot) do {} while (0)
#define power_on_5_0(slot) do {} while (0)
#define power_on_3_3(slot) do {} while (0)
#elif defined(CONFIG_HMI10)
static inline void power_config(int slot)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
/*
* Configure Port B pins for
* 5 Volts Enable and 3 Volts enable
*/
immap->im_cpm.cp_pbpar &= ~(0x00000300);
}
static inline void power_off(int slot)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
/* remove all power */
immap->im_cpm.cp_pbdat |= 0x00000300;
}
static inline void power_on_5_0(int slot)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
immap->im_cpm.cp_pbdat &= ~(0x0000100);
immap->im_cpm.cp_pbdir |= 0x00000300;
}
static inline void power_on_3_3(int slot)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
immap->im_cpm.cp_pbdat &= ~(0x0000200);
immap->im_cpm.cp_pbdir |= 0x00000300;
}
#elif defined(CONFIG_VIRTLAB2)
#define power_config(slot) do {} while (0)
static inline void power_off(int slot)
{
volatile unsigned char *powerctl =
(volatile unsigned char *)PCMCIA_CTRL;
*powerctl = 0;
}
static inline void power_on_5_0(int slot)
{
volatile unsigned char *powerctl =
(volatile unsigned char *)PCMCIA_CTRL;
*powerctl = 2; /* Enable 5V Vccout */
}
static inline void power_on_3_3(int slot)
{
volatile unsigned char *powerctl =
(volatile unsigned char *)PCMCIA_CTRL;
*powerctl = 1; /* Enable 3.3V Vccout */
}
#else
static inline void power_config(int slot)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
/*
* Configure Port C pins for
* 5 Volts Enable and 3 Volts enable
*/
immap->im_ioport.iop_pcpar &= ~(0x0002 | 0x0004);
immap->im_ioport.iop_pcso &= ~(0x0002 | 0x0004);
}
static inline void power_off(int slot)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
immap->im_ioport.iop_pcdat &= ~(0x0002 | 0x0004);
}
static inline void power_on_5_0(int slot)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
immap->im_ioport.iop_pcdat |= 0x0004;
immap->im_ioport.iop_pcdir |= (0x0002 | 0x0004);
}
static inline void power_on_3_3(int slot)
{
volatile immap_t *immap = (immap_t *)CFG_IMMR;
immap->im_ioport.iop_pcdat |= 0x0002;
immap->im_ioport.iop_pcdir |= (0x0002 | 0x0004);
}
#endif
#ifdef CONFIG_HMI10
static inline int check_card_is_absent(int slot)
{
volatile pcmconf8xx_t *pcmp =
(pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
return pcmp->pcmc_pipr & (0x10000000 >> (slot << 4));
}
#else
static inline int check_card_is_absent(int slot)
{
volatile pcmconf8xx_t *pcmp =
(pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
return pcmp->pcmc_pipr & (0x18000000 >> (slot << 4));
}
#endif
#ifdef NSCU_OE_INV
#define NSCU_GCRX_CXOE 0
#else
#define NSCU_GCRX_CXOE __MY_PCMCIA_GCRX_CXOE
#endif
int pcmcia_hardware_enable(int slot)
{
volatile pcmconf8xx_t *pcmp =
(pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
volatile sysconf8xx_t *sysp =
(sysconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_siu_conf));
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)
*/
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 |= 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);
debug ("[%d] %s: PIPR(%p)=0x%x\n", __LINE__,__FUNCTION__,
&(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
if (check_card_is_absent(slot)) {
printf (" No Card found\n");
return (1);
}
/*
* Power On.
*/
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");
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);
}
#if (CONFIG_COMMANDS & CFG_CMD_PCMCIA)
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);
}
#endif /* CFG_CMD_PCMCIA */
int pcmcia_voltage_set(int slot, int vcc, int vpp)
{
#ifndef CONFIG_NSCU
u_long reg;
# ifdef DEBUG
volatile pcmconf8xx_t *pcmp =
(pcmconf8xx_t *)(&(((immap_t *)CFG_IMMR)->im_pcmcia));
# endif
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 */
debug("PIPR: 0x%x --> %s\n", pcmp->pcmc_pipr,
(pcmp->pcmc_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);
}
#endif /* CONFIG_PCMCIA && (CONFIG_TQM8xxL || CONFIG_SVM_SC8xx) */
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