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• This comparison shows the changes necessary to convert path

  → /branches/dynload/kernel/genarch/src/drivers/i8042/i8042.c @ 4347

  → /branches/dynload/kernel/genarch/src/drivers/i8042/i8042.c @ 4348

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• Compare Path:	Rev

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Ignore whitespace Rev 4347 → Rev 4348

/branches/dynload/kernel/genarch/src/drivers/i8042/i8042.c
34,6 → 34,7
* @brief i8042 processor driver
*
* It takes care of the i8042 serial communication.
*
*/
#include <genarch/drivers/i8042/i8042.h>
43,12 → 44,9
#include <mm/slab.h>
#include <ddi/device.h>
static indev_operations_t kbrdin_ops = {
.poll = NULL
};
#define i8042_SET_COMMAND 0x60
#define i8042_COMMAND 0x69
#define i8042_CPU_RESET 0xfe
#define i8042_BUFFER_FULL_MASK 0x01
#define i8042_WAIT_MASK 0x02
72,37 → 70,57
if (((status = pio_read_8(&dev->status)) & i8042_BUFFER_FULL_MASK)) {
uint8_t data = pio_read_8(&dev->data);
indev_push_character(&instance->kbrdin, data);
indev_push_character(instance->kbrdin, data);
}
}
/**< Clear input buffer. */
static void i8042_clear_buffer(i8042_t *dev)
{
while (pio_read_8(&dev->status) & i8042_BUFFER_FULL_MASK)
(void) pio_read_8(&dev->data);
}
/** Initialize i8042. */
indev_t *i8042_init(i8042_t *dev, inr_t inr)
i8042_instance_t *i8042_init(i8042_t *dev, inr_t inr)
{
i8042_instance_t *instance
= malloc(sizeof(i8042_instance_t), FRAME_ATOMIC);
if (!instance)
return NULL;
if (instance) {
instance->i8042 = dev;
instance->kbrdin = NULL;
irq_initialize(&instance->irq);
instance->irq.devno = device_assign_devno();
instance->irq.inr = inr;
instance->irq.claim = i8042_claim;
instance->irq.handler = i8042_irq_handler;
instance->irq.instance = instance;
}
indev_initialize("i8042", &instance->kbrdin, &kbrdin_ops);
return instance;
}
void i8042_wire(i8042_instance_t *instance, indev_t *kbrdin)
{
ASSERT(instance);
ASSERT(kbrdin);
instance->i8042 = dev;
irq_initialize(&instance->irq);
instance->irq.devno = device_assign_devno();
instance->irq.inr = inr;
instance->irq.claim = i8042_claim;
instance->irq.handler = i8042_irq_handler;
instance->irq.instance = instance;
instance->kbrdin = kbrdin;
irq_register(&instance->irq);
i8042_clear_buffer(instance->i8042);
}
/* Reset CPU by pulsing pin 0 */
void i8042_cpu_reset(i8042_t *dev)
{
interrupts_disable();
/*
* Clear input buffer.
*/
while (pio_read_8(&dev->status) & i8042_BUFFER_FULL_MASK)
(void) pio_read_8(&dev->data);
i8042_clear_buffer(dev);
return &instance->kbrdin;
/* Reset CPU */
pio_write_8(&dev->status, i8042_CPU_RESET);
}
/** @}