int h8300_enable_irq_pin(unsigned int irq)
{
int bitmask;
if (irq < EXT_IRQ0 || irq > EXT_IRQ5)
return 0;
bitmask = 1 << (irq - EXT_IRQ0);
switch(irq) {
case EXT_IRQ0:
case EXT_IRQ1:
case EXT_IRQ2:
case EXT_IRQ3:
if (H8300_GPIO_RESERVE(H8300_GPIO_P8, bitmask) == 0)
return -EBUSY;
H8300_GPIO_DDR(H8300_GPIO_P8, bitmask, H8300_GPIO_INPUT);
break;
case EXT_IRQ4:
case EXT_IRQ5:
if (H8300_GPIO_RESERVE(H8300_GPIO_P9, bitmask) == 0)
return -EBUSY;
H8300_GPIO_DDR(H8300_GPIO_P9, bitmask, H8300_GPIO_INPUT);
break;
}
return 0;
}
int request_irq(unsigned int irq,
void (*handler)(int, void *, struct pt_regs *),
unsigned long flags, const char *devname, void *dev_id)
{
irq_handler_t *irq_handle;
int bitmask;
if (irq < 0 || irq >= NR_IRQS) {
printk("Incorrect IRQ %d from %s\n", irq, devname);
return -EINVAL;
}
if (irq_list[irq])
return -EBUSY; /* already used */
/* initialize IRQ pin */
bitmask = 1 << (irq - EXT_IRQ0);
switch(irq) {
case EXT_IRQ0:
case EXT_IRQ1:
case EXT_IRQ2:
case EXT_IRQ3:
if (H8300_GPIO_RESERVE(H8300_GPIO_P8, bitmask) == 0)
return -EBUSY;
H8300_GPIO_DDR(H8300_GPIO_P8, bitmask, H8300_GPIO_INPUT);
break;
case EXT_IRQ4:
case EXT_IRQ5:
if (H8300_GPIO_RESERVE(H8300_GPIO_P9, bitmask) == 0)
return -EBUSY;
H8300_GPIO_DDR(H8300_GPIO_P9, bitmask, H8300_GPIO_INPUT);
break;
}
if(use_kmalloc)
irq_handle = (irq_handler_t *)kmalloc(sizeof(irq_handler_t), GFP_ATOMIC);
else {
irq_handle = (irq_handler_t *)alloc_bootmem(sizeof(irq_handler_t));
(unsigned long)irq_handle |= 0x80000000UL;
}
if (irq_handle == NULL)
return -ENOMEM;
irq_handle->handler = handler;
irq_handle->flags = flags;
irq_handle->count = 0;
irq_handle->dev_id = dev_id;
irq_handle->devname = devname;
irq_list[irq] = irq_handle;
if (irq_handle->flags & SA_SAMPLE_RANDOM)
rand_initialize_irq(irq);
/* enable interrupt */
/* compatible i386 */
if (irq >= EXT_IRQ0 && irq <= EXT_IRQ5)
*(volatile unsigned char *)IER |= bitmask;
return 0;
}
static void sci_init_pins_sci(struct uart_port* port, unsigned int cflag)
{
int ch = (port->mapbase - SMR0) >> 3;
/* set DDR regs */
H8300_GPIO_DDR(h8300_sci_pins[ch].port,h8300_sci_pins[ch].rx,H8300_GPIO_INPUT);
H8300_GPIO_DDR(h8300_sci_pins[ch].port,h8300_sci_pins[ch].tx,H8300_GPIO_OUTPUT);
/* tx mark output*/
H8300_SCI_DR(ch) |= h8300_sci_pins[ch].tx;
}
int request_irq(unsigned int irq,
irqreturn_t (*handler)(int, void *, struct pt_regs *),
unsigned long flags, const char *devname, void *dev_id)
{
unsigned short ptn = 1 << (irq - EXT_IRQ0);
irq_handler_t *irq_handle;
if (irq < 0 || irq >= NR_IRQS) {
printk("Incorrect IRQ %d from %s\n", irq, devname);
return -EINVAL;
}
if (irq_list[irq])
return -EBUSY; /* already used */
if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15) {
/* initialize IRQ pin */
unsigned int port_no,bit_no;
if (*(volatile unsigned short *)ITSR & ptn) {
port_no = irq_assign_table1[irq - EXT_IRQ0].port_no;
bit_no = irq_assign_table1[irq - EXT_IRQ0].bit_no;
} else {
port_no = irq_assign_table0[irq - EXT_IRQ0].port_no;
bit_no = irq_assign_table0[irq - EXT_IRQ0].bit_no;
}
if (H8300_GPIO_RESERVE(port_no, bit_no) == 0)
return -EBUSY; /* pin already use */
H8300_GPIO_DDR(port_no, bit_no, H8300_GPIO_INPUT);
*(volatile unsigned short *)ISR &= ~ptn; /* ISR clear */
}
if (use_kmalloc)
irq_handle = (irq_handler_t *)kmalloc(sizeof(irq_handler_t), GFP_ATOMIC);
else {
/* use bootmem allocater */
irq_handle = (irq_handler_t *)alloc_bootmem(sizeof(irq_handler_t));
irq_handle = (irq_handler_t *)((unsigned long)irq_handle | 0x80000000);
}
if (irq_handle == NULL)
return -ENOMEM;
irq_handle->handler = handler;
irq_handle->flags = flags;
irq_handle->count = 0;
irq_handle->dev_id = dev_id;
irq_handle->devname = devname;
irq_list[irq] = irq_handle;
if (irq_handle->flags & SA_SAMPLE_RANDOM)
rand_initialize_irq(irq);
/* enable interrupt */
/* compatible i386 */
if (irq >= EXT_IRQ0 && irq <= EXT_IRQ15)
*(volatile unsigned short *)IER |= ptn;
return 0;
}
static void sci_init_pins_h8s(struct sci_port* port, unsigned int cflag)
{
int ch = ((port->base & 0xff) - 0x78) >> 3;
switch (ch) {
case 0:
H8300_GPIO_RESERVE(H8300_GPIO_P3,H8300_GPIO_B2|H8300_GPIO_B0);
H8300_GPIO_DDR(H8300_GPIO_P3,H8300_GPIO_B2,H8300_GPIO_INPUT);
H8300_GPIO_DDR(H8300_GPIO_P3,H8300_GPIO_B0,H8300_GPIO_OUTPUT);
*(volatile char *)P3DR |= 0x01;
break;
case 1:
H8300_GPIO_RESERVE(H8300_GPIO_P3,H8300_GPIO_B3|H8300_GPIO_B1);
H8300_GPIO_DDR(H8300_GPIO_P3,H8300_GPIO_B3,H8300_GPIO_INPUT);
H8300_GPIO_DDR(H8300_GPIO_P3,H8300_GPIO_B1,H8300_GPIO_OUTPUT);
*(volatile char *)P3DR |= 0x02;
break;
case 2:
H8300_GPIO_RESERVE(H8300_GPIO_P5,H8300_GPIO_B1|H8300_GPIO_B0);
H8300_GPIO_DDR(H8300_GPIO_P5,H8300_GPIO_B1,H8300_GPIO_INPUT);
H8300_GPIO_DDR(H8300_GPIO_P5,H8300_GPIO_B0,H8300_GPIO_OUTPUT);
*(volatile char *)P5DR |= 0x01;
break;
}
}
static void sci_init_pins_h8300h(struct sci_port* port, unsigned int cflag)
{
int ch = ((port->base & 0xff) - 0xb0) >> 3;
switch (ch) {
case 0:
H8300_GPIO_RESERVE(H8300_GPIO_P9,H8300_GPIO_B2|H8300_GPIO_B0);
H8300_GPIO_DDR(H8300_GPIO_P9,H8300_GPIO_B2,H8300_GPIO_INPUT);
H8300_GPIO_DDR(H8300_GPIO_P9,H8300_GPIO_B0,H8300_GPIO_OUTPUT);
*(volatile char *)P9DR |= 0x01;
break;
case 1:
H8300_GPIO_RESERVE(H8300_GPIO_P9,H8300_GPIO_B3|H8300_GPIO_B1);
H8300_GPIO_DDR(H8300_GPIO_P9,H8300_GPIO_B3,H8300_GPIO_INPUT);
H8300_GPIO_DDR(H8300_GPIO_P9,H8300_GPIO_B1,H8300_GPIO_OUTPUT);
*(volatile char *)P9DR |= 0x02;
break;
case 2:
H8300_GPIO_RESERVE(H8300_GPIO_PB,H8300_GPIO_B7|H8300_GPIO_B6);
H8300_GPIO_DDR(H8300_GPIO_PB,H8300_GPIO_B7,H8300_GPIO_INPUT);
H8300_GPIO_DDR(H8300_GPIO_PB,H8300_GPIO_B6,H8300_GPIO_OUTPUT);
*(volatile char *)PBDR |= 0x40;
break;
}
}
