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hw/ds1338: Implement state save/restore 

Implement state save/restore for the DS1338. This requires
the usual minor adjustment of types in the state struct to
get fixed-width ones with vmstate macros.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2012-10-12 11:54:38 +01:00
parent 7f7fd0f2e4
commit f4741402ab
1 changed files with 22 additions and 5 deletions
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27
hw/ds1338.c
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@ -19,12 +19,27 @@
typedef struct { typedef struct {
I2CSlave i2c; I2CSlave i2c;
time_t offset; int64_t offset;
uint8_t nvram[NVRAM_SIZE]; uint8_t nvram[NVRAM_SIZE];
int ptr; int32_t ptr;
int addr_byte; bool addr_byte;
} DS1338State; } DS1338State;
static const VMStateDescription vmstate_ds1338 = {
.name = "ds1338",
.version_id = 1,
.minimum_version_id = 1,
.minimum_version_id_old = 1,
.fields = (VMStateField[]) {
VMSTATE_I2C_SLAVE(i2c, DS1338State),
VMSTATE_INT64(offset, DS1338State),
VMSTATE_UINT8_ARRAY(nvram, DS1338State, NVRAM_SIZE),
VMSTATE_INT32(ptr, DS1338State),
VMSTATE_BOOL(addr_byte, DS1338State),
VMSTATE_END_OF_LIST()
}
};
static void capture_current_time(DS1338State *s) static void capture_current_time(DS1338State *s)
{ {
/* Capture the current time into the secondary registers /* Capture the current time into the secondary registers
@ -74,7 +89,7 @@ static void ds1338_event(I2CSlave *i2c, enum i2c_event event)
capture_current_time(s); capture_current_time(s);
break; break;
case I2C_START_SEND: case I2C_START_SEND:
s->addr_byte = 1; s->addr_byte = true;
break; break;
default: default:
break; break;
@ -96,7 +111,7 @@ static int ds1338_send(I2CSlave *i2c, uint8_t data)
DS1338State *s = FROM_I2C_SLAVE(DS1338State, i2c); DS1338State *s = FROM_I2C_SLAVE(DS1338State, i2c);
if (s->addr_byte) { if (s->addr_byte) {
s->ptr = data & (NVRAM_SIZE - 1); s->ptr = data & (NVRAM_SIZE - 1);
s->addr_byte = 0; s->addr_byte = false;
return 0; return 0;
} }
if (s->ptr < 8) { if (s->ptr < 8) {
@ -153,12 +168,14 @@ static int ds1338_init(I2CSlave *i2c)
static void ds1338_class_init(ObjectClass *klass, void *data) static void ds1338_class_init(ObjectClass *klass, void *data)
{ {
DeviceClass *dc = DEVICE_CLASS(klass);
I2CSlaveClass *k = I2C_SLAVE_CLASS(klass); I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
k->init = ds1338_init; k->init = ds1338_init;
k->event = ds1338_event; k->event = ds1338_event;
k->recv = ds1338_recv; k->recv = ds1338_recv;
k->send = ds1338_send; k->send = ds1338_send;
dc->vmsd = &vmstate_ds1338;
} }
static TypeInfo ds1338_info = { static TypeInfo ds1338_info = {