board/icu862/pcmcia.c - github/trini/u-boot - Gitiles

 #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 cpm8xx_t	*cp;
 	uint reg;

 	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 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);

 	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 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);

 	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 */
	#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 cpm8xx_t *cp;
	uint reg;

	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 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);

	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 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);

	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 */