| #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 "C2MON" |
| |
| static void cfg_ports (void) |
| { |
| volatile immap_t *immap; |
| volatile cpm8xx_t *cp; |
| ushort sreg; |
| |
| immap = (immap_t *)CONFIG_SYS_IMMR; |
| cp = (cpm8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_cpm)); |
| |
| /* |
| * Configure Port C for TPS2211 PC-Card Power-Interface Switch |
| * |
| * Switch off all voltages, assert shutdown |
| */ |
| sreg = immap->im_ioport.iop_pcdat; |
| sreg |= (TPS2211_VPPD0 | TPS2211_VPPD1); /* VAVPP => Hi-Z */ |
| sreg &= ~(TPS2211_VCCD0 | TPS2211_VCCD1); /* 3V and 5V off */ |
| immap->im_ioport.iop_pcdat = sreg; |
| |
| immap->im_ioport.iop_pcpar &= ~(TPS2211_OUTPUTS); |
| immap->im_ioport.iop_pcdir |= TPS2211_OUTPUTS; |
| |
| debug ("Set Port C: PAR: %04x DIR: %04x DAT: %04x\n", |
| immap->im_ioport.iop_pcpar, |
| immap->im_ioport.iop_pcdir, |
| immap->im_ioport.iop_pcdat); |
| |
| /* |
| * Configure Port B for TPS2211 PC-Card Power-Interface Switch |
| * |
| * Over-Current Input only |
| */ |
| cp->cp_pbpar &= ~(TPS2211_INPUTS); |
| cp->cp_pbdir &= ~(TPS2211_INPUTS); |
| |
| 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; |
| ushort sreg; |
| 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 (); |
| |
| /* |
| * 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"); |
| |
| sreg = immap->im_ioport.iop_pcdat; |
| if ((pipr & mask) == mask) { |
| sreg |= (TPS2211_VPPD0 | TPS2211_VPPD1 | /* VAVPP => Hi-Z */ |
| TPS2211_VCCD1); /* 5V on */ |
| sreg &= ~(TPS2211_VCCD0); /* 3V off */ |
| puts (" 5.0V card found: "); |
| } else { |
| sreg |= (TPS2211_VPPD0 | TPS2211_VPPD1 | /* VAVPP => Hi-Z */ |
| TPS2211_VCCD0); /* 3V on */ |
| sreg &= ~(TPS2211_VCCD1); /* 5V off */ |
| puts (" 3.3V card found: "); |
| } |
| |
| debug ("\nPC DAT: %04x -> 3.3V %s 5.0V %s\n", |
| sreg, |
| ( (sreg & TPS2211_VCCD0) && !(sreg & TPS2211_VCCD1)) ? "on" : "off", |
| (!(sreg & TPS2211_VCCD0) && (sreg & TPS2211_VCCD1)) ? "on" : "off" |
| ); |
| |
| immap->im_ioport.iop_pcdat = sreg; |
| |
| /* Wait 500 ms; use this to check for over-current */ |
| for (i=0; i<5000; ++i) { |
| if ((cp->cp_pbdat & TPS2211_OC) == 0) { |
| printf (" *** Overcurrent - Safety shutdown ***\n"); |
| immap->im_ioport.iop_pcdat &= ~(TPS2211_VCCD0|TPS2211_VCCD1); |
| 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; |
| 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 */ |
| immap->im_ioport.iop_pcdat |= (TPS2211_VPPD0 | TPS2211_VPPD1 | |
| TPS2211_VCCD0 | TPS2211_VCCD1 ); |
| |
| 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; |
| sreg |= TPS2211_VPPD0 | TPS2211_VPPD1; /* VAVPP always Hi-Z */ |
| |
| switch(vcc) { |
| case 0: break; /* Switch off */ |
| case 33: sreg |= TPS2211_VCCD0; /* Switch on 3.3V */ |
| sreg &= ~TPS2211_VCCD1; |
| break; |
| case 50: sreg &= ~TPS2211_VCCD0; /* Switch on 5.0V */ |
| sreg |= TPS2211_VCCD1; |
| 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"); |
| |
| immap->im_ioport.iop_pcdat = sreg; |
| |
| #ifdef DEBUG |
| { |
| char *s; |
| |
| if ((sreg & TPS2211_VCCD0) && !(sreg & TPS2211_VCCD1)) { |
| s = "at 3.3V"; |
| } else if (!(sreg & TPS2211_VCCD0) && (sreg & TPS2211_VCCD1)) { |
| 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 */ |