Viewing file:  sa1100_jornada720.c (5.6 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/*
* drivers/pcmcia/sa1100_jornada720.c
*
* Jornada720 PCMCIA specific routines
*
*/
#include <linux/kernel.h>
#include <linux/sched.h>
#include <asm/delay.h>
#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/arch/pcmcia.h>
#define SOCKET0_POWER GPIO_GPIO0
#define SOCKET0_3V GPIO_GPIO2
#define SOCKET1_POWER (GPIO_GPIO1 | GPIO_GPIO3)
#define SOCKET1_3V GPIO_GPIO3
static int jornada720_pcmcia_init(struct pcmcia_init *init)
{
int return_val=0;
GRER |= 0x00000002;
/* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */
PA_DDR = 0;
PA_DWR = 0;
PA_SDR = 0;
PA_SSR = 0;
PB_DDR = 0;
PB_DWR = 0x01;
PB_SDR = 0;
PB_SSR = 0;
PC_DDR = 0x88;
PC_DWR = 0x20;
PC_SDR = 0;
PC_SSR = 0;
INTPOL1 |=
(1 << (S0_READY_NINT - SA1111_IRQ(32))) |
(1 << (S1_READY_NINT - SA1111_IRQ(32))) |
(1 << (S0_CD_VALID - SA1111_IRQ(32))) |
(1 << (S1_CD_VALID - SA1111_IRQ(32))) |
(1 << (S0_BVD1_STSCHG - SA1111_IRQ(32))) |
(1 << (S1_BVD1_STSCHG - SA1111_IRQ(32)));
return_val+=request_irq(S0_CD_VALID, init->handler, SA_INTERRUPT,
"Jornada720 PCMCIA (0) CD", NULL);
return_val+=request_irq(S1_CD_VALID, init->handler, SA_INTERRUPT,
"Jornada720 CF (1) CD", NULL);
return_val+=request_irq(S0_BVD1_STSCHG, init->handler, SA_INTERRUPT,
"Jornada720 PCMCIA (0) BVD1", NULL);
return_val+=request_irq(S1_BVD1_STSCHG, init->handler, SA_INTERRUPT,
"Jornada720 CF (1) BVD1", NULL);
return (return_val<0) ? -1 : 2;
}
static int jornada720_pcmcia_shutdown(void)
{
free_irq(S0_CD_VALID, NULL);
free_irq(S1_CD_VALID, NULL);
free_irq(S0_BVD1_STSCHG, NULL);
free_irq(S1_BVD1_STSCHG, NULL);
INTPOL1 &=
~((1 << (S0_CD_VALID - SA1111_IRQ(32))) |
(1 << (S1_CD_VALID - SA1111_IRQ(32))) |
(1 << (S0_BVD1_STSCHG - SA1111_IRQ(32))) |
(1 << (S1_BVD1_STSCHG - SA1111_IRQ(32))));
return 0;
}
static int jornada720_pcmcia_socket_state(struct pcmcia_state_array
*state_array)
{
unsigned long status;
int return_val=1;
if(state_array->size<2) return -1;
memset(state_array->state, 0,
(state_array->size)*sizeof(struct pcmcia_state));
status=PCSR;
state_array->state[0].detect=((status & PCSR_S0_DETECT)==0)?1:0;
state_array->state[0].ready=((status & PCSR_S0_READY)==0)?0:1;
state_array->state[0].bvd1=((status & PCSR_S0_BVD1)==0)?0:1;
state_array->state[0].bvd2=((status & PCSR_S0_BVD2)==0)?0:1;
state_array->state[0].wrprot=((status & PCSR_S0_WP)==0)?0:1;
state_array->state[0].vs_3v=((status & PCSR_S0_VS1)==0)?1:0;
state_array->state[0].vs_Xv=((status & PCSR_S0_VS2)==0)?1:0;
state_array->state[1].detect=((status & PCSR_S1_DETECT)==0)?1:0;
state_array->state[1].ready=((status & PCSR_S1_READY)==0)?0:1;
state_array->state[1].bvd1=((status & PCSR_S1_BVD1)==0)?0:1;
state_array->state[1].bvd2=((status & PCSR_S1_BVD2)==0)?0:1;
state_array->state[1].wrprot=((status & PCSR_S1_WP)==0)?0:1;
state_array->state[1].vs_3v=((status & PCSR_S1_VS1)==0)?1:0;
state_array->state[1].vs_Xv=((status & PCSR_S1_VS2)==0)?1:0;
return return_val;
}
static int jornada720_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
{
switch(info->sock){
case 0:
info->irq=S0_READY_NINT;
break;
case 1:
info->irq=S1_READY_NINT;
break;
default:
return -1;
}
return 0;
}
static int jornada720_pcmcia_configure_socket(const struct pcmcia_configure
*configure)
{
unsigned long pccr=PCCR, gpio=PA_DWR;
printk("%s(): config socket %d vcc %d vpp %d\n", __FUNCTION__,
configure->sock, configure->vcc, configure->vpp);
switch(configure->sock){
case 0:
switch(configure->vcc){
case 0:
pccr = (pccr & ~PCCR_S0_FLT);
gpio&=~(SOCKET0_POWER | SOCKET0_3V);
break;
case 33:
pccr = (pccr & ~PCCR_S0_PSE) | PCCR_S0_FLT | PCCR_S0_PWAITEN;
gpio |= SOCKET0_POWER | SOCKET0_3V;
break;
case 50:
pccr = (pccr | PCCR_S0_PSE | PCCR_S0_FLT | PCCR_S0_PWAITEN);
gpio = (gpio & ~SOCKET0_3V) | SOCKET0_POWER;
break;
default:
printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
configure->vcc);
return -1;
}
switch(configure->vpp){
case 0:
break;
case 50:
printk(KERN_ERR "%s(): 5.0 Vpp %u\n", __FUNCTION__,
configure->vpp);
break;
case 120:
printk(KERN_ERR "%s(): 12 Vpp %u\n", __FUNCTION__,
configure->vpp);
break;
default:
printk(KERN_ERR "%s(): unrecognized Vpp %u\n", __FUNCTION__,
configure->vpp);
return -1;
}
pccr=(configure->reset)?(pccr | PCCR_S0_RST):(pccr & ~PCCR_S0_RST);
break;
case 1:
switch(configure->vcc){
case 0:
pccr = (pccr & ~PCCR_S1_FLT);
gpio &= ~(SOCKET1_POWER);
break;
case 33:
pccr = (pccr & ~PCCR_S1_PSE) | PCCR_S1_FLT | PCCR_S1_PWAITEN;
gpio |= SOCKET1_POWER;
break;
case 50:
pccr = (pccr | PCCR_S1_PSE | PCCR_S1_FLT | PCCR_S1_PWAITEN);
gpio = (gpio & ~(SOCKET1_POWER)) | SOCKET1_POWER;
break;
default:
printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
configure->vcc);
return -1;
}
if(configure->vpp!=configure->vcc && configure->vpp!=0){
printk(KERN_ERR "%s(): CF slot cannot support Vpp %u\n", __FUNCTION__,
configure->vpp);
return -1;
}
pccr=(configure->reset)?(pccr | PCCR_S1_RST):(pccr & ~PCCR_S1_RST);
break;
default:
return -1;
}
PCCR = pccr;
PA_DWR = gpio;
return 0;
}
struct pcmcia_low_level jornada720_pcmcia_ops = {
jornada720_pcmcia_init,
jornada720_pcmcia_shutdown,
jornada720_pcmcia_socket_state,
jornada720_pcmcia_get_irq_info,
jornada720_pcmcia_configure_socket
};
|