* This file is licensed under GNU GPL.
*/
-#include "vl.h"
+#include "i2c.h"
-struct max7310_s {
+typedef struct {
i2c_slave i2c;
int i2c_command_byte;
int len;
uint8_t command;
qemu_irq handler[8];
qemu_irq *gpio_in;
-};
+} MAX7310State;
void max7310_reset(i2c_slave *i2c)
{
- struct max7310_s *s = (struct max7310_s *) i2c;
+ MAX7310State *s = (MAX7310State *) i2c;
s->level &= s->direction;
s->direction = 0xff;
s->polarity = 0xf0;
static int max7310_rx(i2c_slave *i2c)
{
- struct max7310_s *s = (struct max7310_s *) i2c;
+ MAX7310State *s = (MAX7310State *) i2c;
switch (s->command) {
case 0x00: /* Input port */
static int max7310_tx(i2c_slave *i2c, uint8_t data)
{
- struct max7310_s *s = (struct max7310_s *) i2c;
+ MAX7310State *s = (MAX7310State *) i2c;
uint8_t diff;
int line;
static void max7310_event(i2c_slave *i2c, enum i2c_event event)
{
- struct max7310_s *s = (struct max7310_s *) i2c;
+ MAX7310State *s = (MAX7310State *) i2c;
s->len = 0;
switch (event) {
s->i2c_command_byte = 1;
break;
case I2C_FINISH:
- if (s->len == 1)
#ifdef VERBOSE
+ if (s->len == 1)
printf("%s: message too short (%i bytes)\n", __FUNCTION__, s->len);
#endif
break;
}
}
+static const VMStateDescription vmstate_max7310 = {
+ .name = "max7310",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .minimum_version_id_old = 0,
+ .fields = (VMStateField []) {
+ VMSTATE_INT32(i2c_command_byte, MAX7310State),
+ VMSTATE_INT32(len, MAX7310State),
+ VMSTATE_UINT8(level, MAX7310State),
+ VMSTATE_UINT8(direction, MAX7310State),
+ VMSTATE_UINT8(polarity, MAX7310State),
+ VMSTATE_UINT8(status, MAX7310State),
+ VMSTATE_UINT8(command, MAX7310State),
+ VMSTATE_I2C_SLAVE(i2c, MAX7310State),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
static void max7310_gpio_set(void *opaque, int line, int level)
{
- struct max7310_s *s = (struct max7310_s *) opaque;
- if (line >= sizeof(s->handler) / sizeof(*s->handler) || line < 0)
- cpu_abort(cpu_single_env, "bad GPIO line");
+ MAX7310State *s = (MAX7310State *) opaque;
+ if (line >= ARRAY_SIZE(s->handler) || line < 0)
+ hw_error("bad GPIO line");
if (level)
s->level |= s->direction & (1 << line);
/* MAX7310 is SMBus-compatible (can be used with only SMBus protocols),
* but also accepts sequences that are not SMBus so return an I2C device. */
-struct i2c_slave *max7310_init(i2c_bus *bus)
+static int max7310_init(i2c_slave *i2c)
{
- struct max7310_s *s = (struct max7310_s *)
- i2c_slave_init(bus, 0, sizeof(struct max7310_s));
- s->i2c.event = max7310_event;
- s->i2c.recv = max7310_rx;
- s->i2c.send = max7310_tx;
+ MAX7310State *s = FROM_I2C_SLAVE(MAX7310State, i2c);
+
s->gpio_in = qemu_allocate_irqs(max7310_gpio_set, s,
- sizeof(s->handler) / sizeof(*s->handler));
+ ARRAY_SIZE(s->handler));
max7310_reset(&s->i2c);
- return &s->i2c;
+ return 0;
}
qemu_irq *max7310_gpio_in_get(i2c_slave *i2c)
{
- struct max7310_s *s = (struct max7310_s *) i2c;
+ MAX7310State *s = (MAX7310State *) i2c;
return s->gpio_in;
}
void max7310_gpio_out_set(i2c_slave *i2c, int line, qemu_irq handler)
{
- struct max7310_s *s = (struct max7310_s *) i2c;
- if (line >= sizeof(s->handler) / sizeof(*s->handler) || line < 0)
- cpu_abort(cpu_single_env, "bad GPIO line");
+ MAX7310State *s = (MAX7310State *) i2c;
+ if (line >= ARRAY_SIZE(s->handler) || line < 0)
+ hw_error("bad GPIO line");
s->handler[line] = handler;
}
+
+static I2CSlaveInfo max7310_info = {
+ .qdev.name = "max7310",
+ .qdev.size = sizeof(MAX7310State),
+ .qdev.vmsd = &vmstate_max7310,
+ .init = max7310_init,
+ .event = max7310_event,
+ .recv = max7310_rx,
+ .send = max7310_tx
+};
+
+static void max7310_register_devices(void)
+{
+ i2c_register_slave(&max7310_info);
+}
+
+device_init(max7310_register_devices)