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PXA2xx I2C slave qdev conversion 

Signed-off-by: Paul Brook <paul@codesourcery.com>
This commit is contained in:
Paul Brook 2009-05-14 22:35:08 +01:00
parent 2d9401aa58
commit e3b425361b
1 changed files with 42 additions and 13 deletions

55
hw/pxa2xx.c
View File

@ -1256,8 +1256,13 @@ static int pxa2xx_rtc_load(QEMUFile *f, void *opaque, int version_id)
}
/* I2C Interface */
typedef struct {
i2c_slave i2c;
PXA2xxI2CState *host;
} PXA2xxI2CSlaveState;
struct PXA2xxI2CState {
i2c_slave slave;
PXA2xxI2CSlaveState *slave;
i2c_bus *bus;
qemu_irq irq;
target_phys_addr_t offset;
@ -1287,7 +1292,8 @@ static void pxa2xx_i2c_update(PXA2xxI2CState *s)
/* These are only stubs now. */
static void pxa2xx_i2c_event(i2c_slave *i2c, enum i2c_event event)
{
PXA2xxI2CState *s = (PXA2xxI2CState *) i2c;
PXA2xxI2CSlaveState *slave = FROM_I2C_SLAVE(PXA2xxI2CSlaveState, i2c);
PXA2xxI2CState *s = slave->host;
switch (event) {
case I2C_START_SEND:
@ -1310,7 +1316,8 @@ static void pxa2xx_i2c_event(i2c_slave *i2c, enum i2c_event event)
static int pxa2xx_i2c_rx(i2c_slave *i2c)
{
PXA2xxI2CState *s = (PXA2xxI2CState *) i2c;
PXA2xxI2CSlaveState *slave = FROM_I2C_SLAVE(PXA2xxI2CSlaveState, i2c);
PXA2xxI2CState *s = slave->host;
if ((s->control & (1 << 14)) || !(s->control & (1 << 6)))
return 0;
@ -1324,7 +1331,8 @@ static int pxa2xx_i2c_rx(i2c_slave *i2c)
static int pxa2xx_i2c_tx(i2c_slave *i2c, uint8_t data)
{
PXA2xxI2CState *s = (PXA2xxI2CState *) i2c;
PXA2xxI2CSlaveState *slave = FROM_I2C_SLAVE(PXA2xxI2CSlaveState, i2c);
PXA2xxI2CState *s = slave->host;
if ((s->control & (1 << 14)) || !(s->control & (1 << 6)))
return 1;
@ -1348,7 +1356,7 @@ static uint32_t pxa2xx_i2c_read(void *opaque, target_phys_addr_t addr)
case ISR:
return s->status | (i2c_bus_busy(s->bus) << 2);
case ISAR:
return s->slave.address;
return s->slave->i2c.address;
case IDBR:
return s->data;
case IBMR:
@ -1422,7 +1430,7 @@ static void pxa2xx_i2c_write(void *opaque, target_phys_addr_t addr,
break;
case ISAR:
i2c_set_slave_address(&s->slave, value & 0x7f);
i2c_set_slave_address(&s->slave->i2c, value & 0x7f);
break;
case IDBR:
@ -1455,7 +1463,7 @@ static void pxa2xx_i2c_save(QEMUFile *f, void *opaque)
qemu_put_8s(f, &s->ibmr);
qemu_put_8s(f, &s->data);
i2c_slave_save(f, &s->slave);
i2c_slave_save(f, &s->slave->i2c);
}
static int pxa2xx_i2c_load(QEMUFile *f, void *opaque, int version_id)
@ -1470,22 +1478,35 @@ static int pxa2xx_i2c_load(QEMUFile *f, void *opaque, int version_id)
qemu_get_8s(f, &s->ibmr);
qemu_get_8s(f, &s->data);
i2c_slave_load(f, &s->slave);
i2c_slave_load(f, &s->slave->i2c);
return 0;
}
static void pxa2xx_i2c_slave_init(i2c_slave *i2c)
{
/* Nothing to do. */
}
static I2CSlaveInfo pxa2xx_i2c_slave_info = {
.init = pxa2xx_i2c_slave_init,
.event = pxa2xx_i2c_event,
.recv = pxa2xx_i2c_rx,
.send = pxa2xx_i2c_tx
};
PXA2xxI2CState *pxa2xx_i2c_init(target_phys_addr_t base,
qemu_irq irq, uint32_t region_size)
{
int iomemtype;
DeviceState *dev;
PXA2xxI2CState *s = qemu_mallocz(sizeof(PXA2xxI2CState));
/* FIXME: Should the slave device really be on a separate bus? */
PXA2xxI2CState *s = (PXA2xxI2CState *)
i2c_slave_init(i2c_init_bus(), 0, sizeof(PXA2xxI2CState));
dev = i2c_create_slave(i2c_init_bus(), "pxa2xx-i2c-slave", 0);
s->slave = FROM_I2C_SLAVE(PXA2xxI2CSlaveState, I2C_SLAVE_FROM_QDEV(dev));
s->slave->host = s;
s->irq = irq;
s->slave.event = pxa2xx_i2c_event;
s->slave.recv = pxa2xx_i2c_rx;
s->slave.send = pxa2xx_i2c_tx;
s->bus = i2c_init_bus();
s->offset = base - (base & (~region_size) & TARGET_PAGE_MASK);
@ -2257,3 +2278,11 @@ PXA2xxState *pxa255_init(unsigned int sdram_size)
pxa2xx_gpio_out_set(s->gpio, 1, s->reset);
return s;
}
static void pxa2xx_register_devices(void)
{
i2c_register_slave("pxa2xx-i2c-slave", sizeof(PXA2xxI2CSlaveState),
&pxa2xx_i2c_slave_info);
}
device_init(pxa2xx_register_devices)