[people/ms/u-boot.git] / board / icu862 / 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

#define PCMCIA_BOARD_MSG "ICU862"

static void cfg_port_B (void)
{
	volatile immap_t	*immap;
	volatile cpm8xx_t	*cp;
	uint reg;

	immap = (immap_t *)CONFIG_SYS_IMMR;
	cp    = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_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 *)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 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 defined(CONFIG_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 *)CONFIG_SYS_IMMR;
	cp    = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm));
	pcmp  = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_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


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 *)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_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 */
Commit	Line	Data
9d407995 WD	1	#include <common.h>
	2	#include <mpc8xx.h>
	3	#include <pcmcia.h>
	4
	5	#undef CONFIG_PCMCIA
	6
c508a4ce	7	#if defined(CONFIG_CMD_PCMCIA)
9d407995 WD	8	#define CONFIG_PCMCIA
	9	#endif
	10
c508a4ce	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	#define PCMCIA_BOARD_MSG "ICU862"
	18
	19	static void cfg_port_B (void)
	20	{
	21	volatile immap_t *immap;
	22	volatile cpm8xx_t *cp;
	23	uint reg;
	24
6d0f6bcf JCPV	25	immap = (immap_t *)CONFIG_SYS_IMMR;
6d0f6bcf JCPV	26	cp = (cpm8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_cpm));
9d407995 WD	27
	28	/*
	29	* Configure Port B for TPS2205 PC-Card Power-Interface Switch
	30	*
	31	* Switch off all voltages, assert shutdown
	32	*/
	33	reg = cp->cp_pbdat;
	34	reg \|= (TPS2205_VPP_PGM \| TPS2205_VPP_VCC \| /* VAVPP => Hi-Z */
	35	TPS2205_VCC3 \| TPS2205_VCC5 \| /* VAVCC => Hi-Z */
	36	TPS2205_SHDN); /* enable switch */
	37	cp->cp_pbdat = reg;
	38
	39	cp->cp_pbpar &= ~(TPS2205_INPUTS \| TPS2205_OUTPUTS);
	40
	41	reg = cp->cp_pbdir & ~(TPS2205_INPUTS);
	42	cp->cp_pbdir = reg \| TPS2205_OUTPUTS;
	43
	44	debug ("Set Port B: PAR: %08x DIR: %08x DAT: %08x\n",
	45	cp->cp_pbpar, cp->cp_pbdir, cp->cp_pbdat);
	46	}
	47
	48	int pcmcia_hardware_enable(int slot)
	49	{
	50	volatile immap_t *immap;
	51	volatile cpm8xx_t *cp;
	52	volatile pcmconf8xx_t *pcmp;
	53	volatile sysconf8xx_t *sysp;
	54	uint reg, pipr, mask;
	55	int i;
	56
	57	debug ("hardware_enable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
	58
	59	udelay(10000);
	60
6d0f6bcf JCPV	61	immap = (immap_t *)CONFIG_SYS_IMMR;
	62	sysp = (sysconf8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_siu_conf));
	63	pcmp = (pcmconf8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_pcmcia));
	64	cp = (cpm8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_cpm));
9d407995 WD	65
	66	/* Configure Port B for TPS2205 PC-Card Power-Interface Switch */
	67	cfg_port_B ();
	68
	69	/*
	70	* Configure SIUMCR to enable PCMCIA port B
	71	* (VFLS[0:1] are not used for debugging, we connect FRZ# instead)
	72	*/
	73	sysp->sc_siumcr &= ~SIUMCR_DBGC11; /* set DBGC to 00 */
	74
	75	/* clear interrupt state, and disable interrupts */
	76	pcmp->pcmc_pscr = PCMCIA_MASK(_slot_);
	77	pcmp->pcmc_per &= ~PCMCIA_MASK(_slot_);
	78
	79	/*
	80	* Disable interrupts, DMA, and PCMCIA buffers
	81	* (isolate the interface) and assert RESET signal
	82	*/
	83	debug ("Disable PCMCIA buffers and assert RESET\n");
	84	reg = 0;
	85	reg \|= __MY_PCMCIA_GCRX_CXRESET; /* active high */
	86	reg \|= __MY_PCMCIA_GCRX_CXOE; /* active low */
	87	PCMCIA_PGCRX(_slot_) = reg;
	88	udelay(500);
	89
	90	/*
	91	* Make sure there is a card in the slot, then configure the interface.
	92	*/
	93	udelay(10000);
	94	debug ("[%d] %s: PIPR(%p)=0x%x\n",
	95	__LINE__,__FUNCTION__,
	96	&(pcmp->pcmc_pipr),pcmp->pcmc_pipr);
	97	if (pcmp->pcmc_pipr & (0x18000000 >> (slot << 4))) {
	98	printf (" No Card found\n");
	99	return (1);
	100	}
	101
	102	/*
	103	* Power On: Set VAVCC to 3.3V or 5V, set VAVPP to Hi-Z
	104	*/
	105	mask = PCMCIA_VS1(slot) \| PCMCIA_VS2(slot);
	106	pipr = pcmp->pcmc_pipr;
	107	debug ("PIPR: 0x%x ==> VS1=o%s, VS2=o%s\n",
	108	pipr,
	109	(reg&PCMCIA_VS1(slot))?"n":"ff",
	110	(reg&PCMCIA_VS2(slot))?"n":"ff");
	111
	112	reg = cp->cp_pbdat;
	113	if ((pipr & mask) == mask) {
	114	reg \|= (TPS2205_VPP_PGM \| TPS2205_VPP_VCC \| /* VAVPP => Hi-Z */
	115	TPS2205_VCC3); /* 3V off */
	116	reg &= ~(TPS2205_VCC5); /* 5V on */
	117	puts (" 5.0V card found: ");
	118	} else {
	119	reg \|= (TPS2205_VPP_PGM \| TPS2205_VPP_VCC \| /* VAVPP => Hi-Z */
	120	TPS2205_VCC5); /* 5V off */
	121	reg &= ~(TPS2205_VCC3); /* 3V on */
	122	puts (" 3.3V card found: ");
	123	}
	124
	125	debug ("\nPB DAT: %08x -> 3.3V %s 5.0V %s VPP_PGM %s VPP_VCC %s\n",
	126	reg,
	127	(reg & TPS2205_VCC3) ? "off" : "on",
	128	(reg & TPS2205_VCC5) ? "off" : "on",
129	(reg & TPS2205_VPP_PGM) ? "off" : "on",
130	(reg & TPS2205_VPP_VCC) ? "off" : "on" );
131
132	cp->cp_pbdat = reg;
133
134	/* Wait 500 ms; use this to check for over-current */
135	for (i=0; i<5000; ++i) {
136	if ((cp->cp_pbdat & TPS2205_OC) == 0) {
137	printf (" * Overcurrent - Safety shutdown *\n");
138	cp->cp_pbdat &= ~(TPS2205_SHDN);
139	return (1);
140	}
141	udelay (100);
142	}
143
144	debug ("Enable PCMCIA buffers and stop RESET\n");
145	reg = PCMCIA_PGCRX(_slot_);
146	reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
147	reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
148	PCMCIA_PGCRX(_slot_) = reg;
149
150	udelay(250000); /* some cards need >150 ms to come up :-( */
151
152	debug ("# hardware_enable done\n");
153
154	return (0);
155	}
156
157
c508a4ce	158	#if defined(CONFIG_CMD_PCMCIA)
9d407995 WD	159	int pcmcia_hardware_disable(int slot)
	160	{
	161	volatile immap_t *immap;
	162	volatile cpm8xx_t *cp;
	163	volatile pcmconf8xx_t *pcmp;
	164	u_long reg;
	165
	166	debug ("hardware_disable: " PCMCIA_BOARD_MSG " Slot %c\n", 'A'+slot);
	167
6d0f6bcf JCPV	168	immap = (immap_t *)CONFIG_SYS_IMMR;
	169	cp = (cpm8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_cpm));
	170	pcmp = (pcmconf8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_pcmcia));
9d407995 WD	171
	172	/* Shut down */
	173	cp->cp_pbdat &= ~(TPS2205_SHDN);
	174
	175	/* Configure PCMCIA General Control Register */
	176	debug ("Disable PCMCIA buffers and assert RESET\n");
	177	reg = 0;
	178	reg \|= __MY_PCMCIA_GCRX_CXRESET; /* active high */
	179	reg \|= __MY_PCMCIA_GCRX_CXOE; /* active low */
	180	PCMCIA_PGCRX(_slot_) = reg;
	181
	182	udelay(10000);
	183
	184	return (0);
	185	}
77a31854	186	#endif
9d407995 WD	187
	188
	189	int pcmcia_voltage_set(int slot, int vcc, int vpp)
	190	{
	191	volatile immap_t *immap;
	192	volatile cpm8xx_t *cp;
	193	volatile pcmconf8xx_t *pcmp;
	194	u_long reg;
	195
	196	debug ("voltage_set: "
	197	PCMCIA_BOARD_MSG
	198	" Slot %c, Vcc=%d.%d, Vpp=%d.%d\n",
	199	'A'+slot, vcc/10, vcc%10, vpp/10, vcc%10);
	200
6d0f6bcf JCPV	201	immap = (immap_t *)CONFIG_SYS_IMMR;
	202	cp = (cpm8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_cpm));
	203	pcmp = (pcmconf8xx_t )(&(((immap_t )CONFIG_SYS_IMMR)->im_pcmcia));
9d407995 WD	204	/*
	205	* Disable PCMCIA buffers (isolate the interface)
	206	* and assert RESET signal
	207	*/
	208	debug ("Disable PCMCIA buffers and assert RESET\n");
	209	reg = PCMCIA_PGCRX(_slot_);
	210	reg \|= __MY_PCMCIA_GCRX_CXRESET; /* active high */
	211	reg \|= __MY_PCMCIA_GCRX_CXOE; /* active low */
	212	PCMCIA_PGCRX(_slot_) = reg;
	213	udelay(500);
	214
	215	/*
	216	* Configure Port C pins for
	217	* 5 Volts Enable and 3 Volts enable,
	218	* Turn all power pins to Hi-Z
	219	*/
	220	debug ("PCMCIA power OFF\n");
	221	cfg_port_B (); /* Enables switch, but all in Hi-Z */
	222
	223	reg = cp->cp_pbdat;
	224
	225	switch(vcc) {
53677ef1	226	case 0: break; /* Switch off */
9d407995 WD	227	case 33: reg &= ~TPS2205_VCC3; break; /* Switch on 3.3V */
9d407995 WD	228	case 50: reg &= ~TPS2205_VCC5; break; /* Switch on 5.0V */
53677ef1	229	default: goto done;
9d407995 WD	230	}
	231
	232	/* Checking supported voltages */
	233
	234	debug ("PIPR: 0x%x --> %s\n",
	235	pcmp->pcmc_pipr,
	236	(pcmp->pcmc_pipr & 0x00008000) ? "only 5 V" : "can do 3.3V");
	237
	238	cp->cp_pbdat = reg;
	239
	240	#ifdef DEBUG
	241	{
	242	char *s;
	243
	244	if ((reg & TPS2205_VCC3) == 0) {
	245	s = "at 3.3V";
	246	} else if ((reg & TPS2205_VCC5) == 0) {
	247	s = "at 5.0V";
	248	} else {
	249	s = "down";
	250	}
	251	printf ("PCMCIA powered %s\n", s);
	252	}
	253	#endif
	254
	255	done:
	256	debug ("Enable PCMCIA buffers and stop RESET\n");
	257	reg = PCMCIA_PGCRX(_slot_);
	258	reg &= ~__MY_PCMCIA_GCRX_CXRESET; /* active high */
	259	reg &= ~__MY_PCMCIA_GCRX_CXOE; /* active low */
	260	PCMCIA_PGCRX(_slot_) = reg;
	261	udelay(500);
	262
	263	debug ("voltage_set: " PCMCIA_BOARD_MSG " Slot %c, DONE\n",
	264	slot+'A');
	265	return (0);
	266	}
	267
	268	#endif /* CONFIG_PCMCIA */