Merge commit '87ddedd'

1 files changed, 330 insertions, 0 deletions

diff --git a/drivers/pcmcia/tqm8xx_pcmcia.c b/drivers/pcmcia/tqm8xx_pcmcia.c
new file mode 100644
index 0000000..132c7a5
--- /dev/null
+++ b/drivers/pcmcia/tqm8xx_pcmcia.c
@@ -0,0 +1,330 @@
+/* -------------------------------------------------------------------- */
+/* 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 defined(CONFIG_CMD_PCMCIA)
+#define	CONFIG_PCMCIA
+#endif
+
+#if defined(CONFIG_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 defined(CONFIG_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
+
+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) */