[people/ms/u-boot.git] / board / netta / pcmcia.c

#include <common.h>
#include <mpc8xx.h>
#include <pcmcia.h>

#undef	CONFIG_PCMCIA

#if defined(CONFIG_CMD_PCMCIA)
#define	CONFIG_PCMCIA
#endif

#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
#define	CONFIG_PCMCIA
#endif

#ifdef	CONFIG_PCMCIA

/* some sane bit macros */
#define _BD(_b)				(1U << (31-(_b)))
#define _BDR(_l, _h)			(((((1U << (31-(_l))) - 1) << 1) | 1) & ~((1U << (31-(_h))) - 1))

#define _BW(_b)				(1U << (15-(_b)))
#define _BWR(_l, _h)			(((((1U << (15-(_l))) - 1) << 1) | 1) & ~((1U << (15-(_h))) - 1))

#define _BB(_b)				(1U << (7-(_b)))
#define _BBR(_l, _h)			(((((1U << (7-(_l))) - 1) << 1) | 1) & ~((1U << (7-(_h))) - 1))

#define _B(_b)				_BD(_b)
#define _BR(_l, _h)			_BDR(_l, _h)

#define PCMCIA_BOARD_MSG "NETTA"

static const unsigned short vppd_masks[2] = { _BW(14), _BW(15) };

static void cfg_vppd(int no)
{
	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
	unsigned short mask;

	if ((unsigned int)no >= sizeof(vppd_masks)/sizeof(vppd_masks[0]))
		return;

	mask = vppd_masks[no];

	immap->im_ioport.iop_papar &= ~mask;
	immap->im_ioport.iop_paodr &= ~mask;
	immap->im_ioport.iop_padir |=  mask;
}

static void set_vppd(int no, int what)
{
	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
	unsigned short mask;

	if ((unsigned int)no >= sizeof(vppd_masks)/sizeof(vppd_masks[0]))
		return;

	mask = vppd_masks[no];

	if (what)
		immap->im_ioport.iop_padat |= mask;
	else
		immap->im_ioport.iop_padat &= ~mask;
}

static const unsigned short vccd_masks[2] = { _BW(10), _BW(6) };

static void cfg_vccd(int no)
{
	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
	unsigned short mask;

	if ((unsigned int)no >= sizeof(vccd_masks)/sizeof(vccd_masks[0]))
		return;

	mask = vccd_masks[no];

	immap->im_ioport.iop_papar &= ~mask;
	immap->im_ioport.iop_paodr &= ~mask;
	immap->im_ioport.iop_padir |=  mask;
}

static void set_vccd(int no, int what)
{
	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
	unsigned short mask;

	if ((unsigned int)no >= sizeof(vccd_masks)/sizeof(vccd_masks[0]))
		return;

	mask = vccd_masks[no];

	if (what)
		immap->im_ioport.iop_padat |= mask;
	else
		immap->im_ioport.iop_padat &= ~mask;
}

static const unsigned short oc_mask = _BW(8);

static void cfg_oc(void)
{
	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
	unsigned short mask = oc_mask;

	immap->im_ioport.iop_pcdir &= ~mask;
	immap->im_ioport.iop_pcso  &= ~mask;
	immap->im_ioport.iop_pcint &= ~mask;
	immap->im_ioport.iop_pcpar &= ~mask;
}

static int get_oc(void)
{
	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
	unsigned short mask = oc_mask;
	int what;

	what = !!(immap->im_ioport.iop_pcdat & mask);;
	return what;
}

static const unsigned short shdn_mask = _BW(12);

static void cfg_shdn(void)
{
	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
	unsigned short mask;

	mask = shdn_mask;

	immap->im_ioport.iop_papar &= ~mask;
	immap->im_ioport.iop_paodr &= ~mask;
	immap->im_ioport.iop_padir |=  mask;
}

static void set_shdn(int what)
{
	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
	unsigned short mask;

	mask = shdn_mask;

	if (what)
		immap->im_ioport.iop_padat |= mask;
	else
		immap->im_ioport.iop_padat &= ~mask;
}

static void cfg_ports (void)
{
	volatile immap_t	*immap;
	volatile cpm8xx_t	*cp;

	immap = (immap_t *)CONFIG_SYS_IMMR;
	cp    = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm));


	cfg_vppd(0); cfg_vppd(1);	/* VPPD0,VPPD1 VAVPP => Hi-Z */
	cfg_vccd(0); cfg_vccd(1);	/* 3V and 5V off */
	cfg_shdn();
	cfg_oc();

	/*
	* Configure Port A for TPS2211 PC-Card Power-Interface Switch
	*
	* Switch off all voltages, assert shutdown
	*/
	set_vppd(0, 1); set_vppd(1, 1);
	set_vccd(0, 0); set_vccd(1, 0);
	set_shdn(1);

	udelay(100000);
}

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 *)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));

	/* Configure Ports for TPS2211A PC-Card Power-Interface Switch */
	cfg_ports ();

	/* 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");

	if ((pipr & mask) == mask) {
		set_vppd(0, 1); set_vppd(1, 1);		/* VAVPP => Hi-Z */
		set_vccd(0, 0); set_vccd(1, 1);		/* 5V on, 3V off */
		puts (" 5.0V card found: ");
	} else {
		set_vppd(0, 1); set_vppd(1, 1);		/* VAVPP => Hi-Z */
		set_vccd(0, 1); set_vccd(1, 0);		/* 5V off, 3V on */
		puts (" 3.3V card found: ");
	}

	/*  Wait 500 ms; use this to check for over-current */
	for (i=0; i<5000; ++i) {
		if (!get_oc()) {
			printf ("   *** Overcurrent - Safety shutdown ***\n");
			set_vccd(0, 0); set_vccd(1, 0);		/* VAVPP => Hi-Z */
			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 defined(CONFIG_CMD_PCMCIA)
int pcmcia_hardware_disable(int slot)
{
	volatile immap_t	*immap;
	volatile pcmconf8xx_t	*pcmp;
	u_long reg;

	debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);

	immap = (immap_t *)CONFIG_SYS_IMMR;
	pcmp  = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia));

	/* 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;

	/* All voltages off / Hi-Z */
	set_vppd(0, 1); set_vppd(1, 1);
	set_vccd(0, 1); set_vccd(1, 1);

	udelay(10000);

	return (0);
}
#endif


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;
	ushort sreg;

	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 *)CONFIG_SYS_IMMR;
	cp    = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm));
	pcmp  = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_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_ports ();	/* Enables switch, but all in Hi-Z */

	sreg  = immap->im_ioport.iop_pcdat;
	set_vppd(0, 1); set_vppd(1, 1);

	switch(vcc) {
		case  0:
			break;	/* Switch off		*/

		case 33:
			set_vccd(0, 1); set_vccd(1, 0);
			break;

		case 50:
			set_vccd(0, 0); set_vccd(1, 1);
			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");

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 */
Commit	Line	Data
9d407995 WD	1	#include <common.h>
	2	#include <mpc8xx.h>
	3	#include <pcmcia.h>
	4
	5	#undef CONFIG_PCMCIA
	6
3fe00109	7	#if defined(CONFIG_CMD_PCMCIA)
9d407995 WD	8	#define CONFIG_PCMCIA
	9	#endif
	10
3fe00109	11	#if defined(CONFIG_CMD_IDE) && defined(CONFIG_IDE_8xx_PCCARD)
9d407995 WD	12	#define CONFIG_PCMCIA
	13	#endif
	14
	15	#ifdef CONFIG_PCMCIA
	16
	17	/* some sane bit macros */
	18	#define _BD(_b) (1U << (31-(_b)))
	19	#define _BDR(_l, _h) (((((1U << (31-(_l))) - 1) << 1) \| 1) & ~((1U << (31-(_h))) - 1))
	20
	21	#define _BW(_b) (1U << (15-(_b)))
	22	#define _BWR(_l, _h) (((((1U << (15-(_l))) - 1) << 1) \| 1) & ~((1U << (15-(_h))) - 1))
	23
	24	#define _BB(_b) (1U << (7-(_b)))
	25	#define _BBR(_l, _h) (((((1U << (7-(_l))) - 1) << 1) \| 1) & ~((1U << (7-(_h))) - 1))
	26
	27	#define _B(_b) _BD(_b)
	28	#define _BR(_l, _h) _BDR(_l, _h)
	29
	30	#define PCMCIA_BOARD_MSG "NETTA"
	31
	32	static const unsigned short vppd_masks[2] = { _BW(14), _BW(15) };
	33
	34	static void cfg_vppd(int no)
	35	{
6d0f6bcf	36	volatile immap_t immap = (immap_t )CONFIG_SYS_IMMR;
9d407995 WD	37	unsigned short mask;
	38
	39	if ((unsigned int)no >= sizeof(vppd_masks)/sizeof(vppd_masks[0]))
	40	return;
	41
	42	mask = vppd_masks[no];
	43
	44	immap->im_ioport.iop_papar &= ~mask;
	45	immap->im_ioport.iop_paodr &= ~mask;
	46	immap->im_ioport.iop_padir \|= mask;
	47	}
	48
	49	static void set_vppd(int no, int what)
	50	{
6d0f6bcf	51	volatile immap_t immap = (immap_t )CONFIG_SYS_IMMR;
9d407995 WD	52	unsigned short mask;
	53
	54	if ((unsigned int)no >= sizeof(vppd_masks)/sizeof(vppd_masks[0]))
	55	return;
	56
	57	mask = vppd_masks[no];
	58
	59	if (what)
	60	immap->im_ioport.iop_padat \|= mask;
	61	else
	62	immap->im_ioport.iop_padat &= ~mask;
	63	}
	64
	65	static const unsigned short vccd_masks[2] = { _BW(10), _BW(6) };
	66
	67	static void cfg_vccd(int no)
	68	{
6d0f6bcf	69	volatile immap_t immap = (immap_t )CONFIG_SYS_IMMR;
9d407995 WD	70	unsigned short mask;
	71
	72	if ((unsigned int)no >= sizeof(vccd_masks)/sizeof(vccd_masks[0]))
	73	return;
	74
	75	mask = vccd_masks[no];
	76
	77	immap->im_ioport.iop_papar &= ~mask;
	78	immap->im_ioport.iop_paodr &= ~mask;
	79	immap->im_ioport.iop_padir \|= mask;
	80	}
	81
	82	static void set_vccd(int no, int what)
	83	{
6d0f6bcf	84	volatile immap_t immap = (immap_t )CONFIG_SYS_IMMR;
9d407995 WD	85	unsigned short mask;
	86
	87	if ((unsigned int)no >= sizeof(vccd_masks)/sizeof(vccd_masks[0]))
	88	return;
	89
	90	mask = vccd_masks[no];
	91
	92	if (what)
	93	immap->im_ioport.iop_padat \|= mask;
	94	else
	95	immap->im_ioport.iop_padat &= ~mask;
	96	}
	97
	98	static const unsigned short oc_mask = _BW(8);
	99
	100	static void cfg_oc(void)
	101	{
6d0f6bcf	102	volatile immap_t immap = (immap_t )CONFIG_SYS_IMMR;
9d407995 WD	103	unsigned short mask = oc_mask;
	104
	105	immap->im_ioport.iop_pcdir &= ~mask;
	106	immap->im_ioport.iop_pcso &= ~mask;
	107	immap->im_ioport.iop_pcint &= ~mask;
	108	immap->im_ioport.iop_pcpar &= ~mask;
	109	}
	110
	111	static int get_oc(void)
	112	{
6d0f6bcf	113	volatile immap_t immap = (immap_t )CONFIG_SYS_IMMR;
9d407995 WD	114	unsigned short mask = oc_mask;
	115	int what;
	116
	117	what = !!(immap->im_ioport.iop_pcdat & mask);;
	118	return what;
	119	}
	120
	121	static const unsigned short shdn_mask = _BW(12);
	122
	123	static void cfg_shdn(void)
	124	{
6d0f6bcf	125	volatile immap_t immap = (immap_t )CONFIG_SYS_IMMR;
9d407995 WD	126	unsigned short mask;
	127
	128	mask = shdn_mask;
	129
	130	immap->im_ioport.iop_papar &= ~mask;
	131	immap->im_ioport.iop_paodr &= ~mask;
	132	immap->im_ioport.iop_padir \|= mask;
	133	}
	134
	135	static void set_shdn(int what)
	136	{
6d0f6bcf	137	volatile immap_t immap = (immap_t )CONFIG_SYS_IMMR;
9d407995 WD	138	unsigned short mask;
	139
	140	mask = shdn_mask;
	141
	142	if (what)
	143	immap->im_ioport.iop_padat \|= mask;
	144	else
	145	immap->im_ioport.iop_padat &= ~mask;
	146	}
	147
	148	static void cfg_ports (void)
	149	{
	150	volatile immap_t *immap;
	151	volatile cpm8xx_t *cp;
	152
6d0f6bcf JCPV	153	immap = (immap_t *)CONFIG_SYS_IMMR;
6d0f6bcf JCPV	154	cp = (cpm8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_cpm));
9d407995 WD	155
	156
	157	cfg_vppd(0); cfg_vppd(1); /* VPPD0,VPPD1 VAVPP => Hi-Z */
	158	cfg_vccd(0); cfg_vccd(1); /* 3V and 5V off */
	159	cfg_shdn();
	160	cfg_oc();
	161
	162	/*
	163	* Configure Port A for TPS2211 PC-Card Power-Interface Switch
	164	*
	165	* Switch off all voltages, assert shutdown
	166	*/
	167	set_vppd(0, 1); set_vppd(1, 1);
	168	set_vccd(0, 0); set_vccd(1, 0);
	169	set_shdn(1);
	170
	171	udelay(100000);
	172	}
	173
	174	int pcmcia_hardware_enable(int slot)
	175	{
	176	volatile immap_t *immap;
	177	volatile cpm8xx_t *cp;
	178	volatile pcmconf8xx_t *pcmp;
	179	volatile sysconf8xx_t *sysp;
	180	uint reg, pipr, mask;
	181	int i;
	182
	183	debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
	184
	185	udelay(10000);
	186
6d0f6bcf JCPV	187	immap = (immap_t *)CONFIG_SYS_IMMR;
	188	sysp = (sysconf8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_siu_conf));
	189	pcmp = (pcmconf8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_pcmcia));
	190	cp = (cpm8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_cpm));
9d407995 WD	191
	192	/* Configure Ports for TPS2211A PC-Card Power-Interface Switch */
	193	cfg_ports ();
	194
	195	/* clear interrupt state, and disable interrupts */
	196	pcmp->pcmc_pscr = PCMCIA_MASK(_slot_);
	197	pcmp->pcmc_per &= ~PCMCIA_MASK(_slot_);
	198
	199	/*
	200	* Disable interrupts, DMA, and PCMCIA buffers
	201	* (isolate the interface) and assert RESET signal
	202	*/
	203	debug ("Disable PCMCIA buffers and assert RESET\n");
	204	reg = 0;
	205	reg \|= __MY_PCMCIA_GCRX_CXRESET; /* active high */
	206	reg \|= __MY_PCMCIA_GCRX_CXOE; /* active low */
	207	PCMCIA_PGCRX(_slot_) = reg;
	208
	209	udelay(500);
	210
	211	/*
	212	* Make sure there is a card in the slot, then configure the interface.
	213	*/
	214	udelay(10000);
	215	debug ("[%d] %s: PIPR(%p)=0x%x\n",
	216	__LINE__,__FUNCTION__,
	217	&(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
	218	if (pcmp->pcmc_pipr & (0x18000000 >> (slot << 4))) {
	219	printf (" No Card found\n");
	220	return (1);
	221	}
	222
	223	/*
	224	* Power On: Set VAVCC to 3.3V or 5V, set VAVPP to Hi-Z
	225	*/
	226	mask = PCMCIA_VS1(slot) \| PCMCIA_VS2(slot);
	227	pipr = pcmp->pcmc_pipr;
	228	debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
	229	pipr,
	230	(reg&PCMCIA_VS1(slot))?"n":"ff",
	231	(reg&PCMCIA_VS2(slot))?"n":"ff");
	232
	233	if ((pipr & mask) == mask) {
53677ef1 WD	234	set_vppd(0, 1); set_vppd(1, 1); /* VAVPP => Hi-Z */
53677ef1 WD	235	set_vccd(0, 0); set_vccd(1, 1); /* 5V on, 3V off */
9d407995 WD	236	puts (" 5.0V card found: ");
9d407995 WD	237	} else {
53677ef1 WD	238	set_vppd(0, 1); set_vppd(1, 1); /* VAVPP => Hi-Z */
53677ef1 WD	239	set_vccd(0, 1); set_vccd(1, 0); /* 5V off, 3V on */
9d407995 WD	240	puts (" 3.3V card found: ");
	241	}
	242
	243	/* Wait 500 ms; use this to check for over-current */
	244	for (i=0; i<5000; ++i) {
	245	if (!get_oc()) {
	246	printf (" * Overcurrent - Safety shutdown *\n");
53677ef1	247	set_vccd(0, 0); set_vccd(1, 0); /* VAVPP => Hi-Z */
9d407995 WD	248	return (1);
	249	}
	250	udelay (100);
	251	}
	252
	253	debug ("Enable PCMCIA buffers and stop RESET\n");
	254	reg = PCMCIA_PGCRX(_slot_);
	255	reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
	256	reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
	257	PCMCIA_PGCRX(_slot_) = reg;
	258
	259	udelay(250000); /* some cards need >150 ms to come up :-( */
	260
	261	debug ("# hardware_enable done\n");
	262
	263	return (0);
	264	}
	265
	266
3fe00109	267	#if defined(CONFIG_CMD_PCMCIA)
9d407995 WD	268	int pcmcia_hardware_disable(int slot)
	269	{
	270	volatile immap_t *immap;
	271	volatile pcmconf8xx_t *pcmp;
	272	u_long reg;
	273
	274	debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
	275
6d0f6bcf JCPV	276	immap = (immap_t *)CONFIG_SYS_IMMR;
6d0f6bcf JCPV	277	pcmp = (pcmconf8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_pcmcia));
9d407995 WD	278
	279	/* Configure PCMCIA General Control Register */
	280	debug ("Disable PCMCIA buffers and assert RESET\n");
	281	reg = 0;
	282	reg \|= __MY_PCMCIA_GCRX_CXRESET; /* active high */
	283	reg \|= __MY_PCMCIA_GCRX_CXOE; /* active low */
	284	PCMCIA_PGCRX(_slot_) = reg;
	285
	286	/* All voltages off / Hi-Z */
	287	set_vppd(0, 1); set_vppd(1, 1);
	288	set_vccd(0, 1); set_vccd(1, 1);
	289
	290	udelay(10000);
	291
	292	return (0);
	293	}
d39b5741	294	#endif
9d407995 WD	295
	296
	297	int pcmcia_voltage_set(int slot, int vcc, int vpp)
	298	{
	299	volatile immap_t *immap;
	300	volatile cpm8xx_t *cp;
	301	volatile pcmconf8xx_t *pcmp;
	302	u_long reg;
	303	ushort sreg;
	304
	305	debug ("voltage_set: "
	306	PCMCIA_BOARD_MSG
	307	" Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
	308	'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
	309
6d0f6bcf JCPV	310	immap = (immap_t *)CONFIG_SYS_IMMR;
	311	cp = (cpm8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_cpm));
	312	pcmp = (pcmconf8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_pcmcia));
9d407995 WD	313	/*
	314	* Disable PCMCIA buffers (isolate the interface)
	315	* and assert RESET signal
	316	*/
	317	debug ("Disable PCMCIA buffers and assert RESET\n");
	318	reg = PCMCIA_PGCRX(_slot_);
	319	reg \|= __MY_PCMCIA_GCRX_CXRESET; /* active high */
	320	reg \|= __MY_PCMCIA_GCRX_CXOE; /* active low */
	321	PCMCIA_PGCRX(_slot_) = reg;
	322	udelay(500);
	323
	324	/*
	325	* Configure Port C pins for
	326	* 5 Volts Enable and 3 Volts enable,
	327	* Turn all power pins to Hi-Z
	328	*/
	329	debug ("PCMCIA power OFF\n");
	330	cfg_ports (); /* Enables switch, but all in Hi-Z */
	331
	332	sreg = immap->im_ioport.iop_pcdat;
	333	set_vppd(0, 1); set_vppd(1, 1);
	334
	335	switch(vcc) {
	336	case 0:
	337	break; /* Switch off */
	338
	339	case 33:
	340	set_vccd(0, 1); set_vccd(1, 0);
	341	break;
	342
	343	case 50:
	344	set_vccd(0, 0); set_vccd(1, 1);
	345	break;
	346
	347	default:
	348	goto done;
	349	}
	350
	351	/* Checking supported voltages */
	352
	353	debug ("PIPR: 0x%x --> %s\n",
	354	pcmp->pcmc_pipr,
	355	(pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
	356
	357	done:
	358	debug ("Enable PCMCIA buffers and stop RESET\n");
	359	reg = PCMCIA_PGCRX(_slot_);
	360	reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
	361	reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
	362	PCMCIA_PGCRX(_slot_) = reg;
	363	udelay(500);
	364
	365	debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n",
	366	slot+'A');
	367	return (0);
	368	}
	369
	370	#endif /* CONFIG_PCMCIA */