i2c: smbus: convert to QEMU Object Model

This converts two types because smbus is implemented as a subclass of i2c.  It's
extremely difficult to convert these two independently.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

15 files changed, 331 insertions, 164 deletions

diff --git a/hw/ds1338.c b/hw/ds1338.c
index 1c4ba9fcd0..4e09efe123 100644
--- a/hw/ds1338.c
+++ b/hw/ds1338.c
@@ -118,13 +118,20 @@ static int ds1338_init(I2CSlave *i2c)
     return 0;
 }
 
-static I2CSlaveInfo ds1338_info = {
-    .qdev.name = "ds1338",
-    .qdev.size = sizeof(DS1338State),
-    .init = ds1338_init,
-    .event = ds1338_event,
-    .recv = ds1338_recv,
-    .send = ds1338_send,
+static void ds1338_class_init(ObjectClass *klass, void *data)
+{
+    I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
+
+    k->init = ds1338_init;
+    k->event = ds1338_event;
+    k->recv = ds1338_recv;
+    k->send = ds1338_send;
+}
+
+static DeviceInfo ds1338_info = {
+    .name = "ds1338",
+    .size = sizeof(DS1338State),
+    .class_init = ds1338_class_init,
 };
 
 static void ds1338_register_devices(void)
diff --git a/hw/i2c.c b/hw/i2c.c
index 9efe70c29d..9e5d3dfb1a 100644
--- a/hw/i2c.c
+++ b/hw/i2c.c
@@ -83,6 +83,7 @@ int i2c_start_transfer(i2c_bus *bus, uint8_t address, int recv)
 {
     DeviceState *qdev;
     I2CSlave *slave = NULL;
+    I2CSlaveClass *sc;
 
     QTAILQ_FOREACH(qdev, &bus->qbus.children, sibling) {
         I2CSlave *candidate = I2C_SLAVE_FROM_QDEV(qdev);
@@ -92,24 +93,33 @@ int i2c_start_transfer(i2c_bus *bus, uint8_t address, int recv)
         }
     }
 
-    if (!slave)
+    if (!slave) {
         return 1;
+    }
 
+    sc = I2C_SLAVE_GET_CLASS(slave);
     /* If the bus is already busy, assume this is a repeated
        start condition.  */
     bus->current_dev = slave;
-    slave->info->event(slave, recv ? I2C_START_RECV : I2C_START_SEND);
+    if (sc->event) {
+        sc->event(slave, recv ? I2C_START_RECV : I2C_START_SEND);
+    }
     return 0;
 }
 
 void i2c_end_transfer(i2c_bus *bus)
 {
     I2CSlave *dev = bus->current_dev;
+    I2CSlaveClass *sc;
 
-    if (!dev)
+    if (!dev) {
         return;
+    }
 
-    dev->info->event(dev, I2C_FINISH);
+    sc = I2C_SLAVE_GET_CLASS(dev);
+    if (sc->event) {
+        sc->event(dev, I2C_FINISH);
+    }
 
     bus->current_dev = NULL;
 }
@@ -117,31 +127,50 @@ void i2c_end_transfer(i2c_bus *bus)
 int i2c_send(i2c_bus *bus, uint8_t data)
 {
     I2CSlave *dev = bus->current_dev;
+    I2CSlaveClass *sc;
 
-    if (!dev)
+    if (!dev) {
         return -1;
+    }
 
-    return dev->info->send(dev, data);
+    sc = I2C_SLAVE_GET_CLASS(dev);
+    if (sc->send) {
+        return sc->send(dev, data);
+    }
+
+    return -1;
 }
 
 int i2c_recv(i2c_bus *bus)
 {
     I2CSlave *dev = bus->current_dev;
+    I2CSlaveClass *sc;
 
-    if (!dev)
+    if (!dev) {
         return -1;
+    }
+
+    sc = I2C_SLAVE_GET_CLASS(dev);
+    if (sc->recv) {
+        return sc->recv(dev);
+    }
 
-    return dev->info->recv(dev);
+    return -1;
 }
 
 void i2c_nack(i2c_bus *bus)
 {
     I2CSlave *dev = bus->current_dev;
+    I2CSlaveClass *sc;
 
-    if (!dev)
+    if (!dev) {
         return;
+    }
 
-    dev->info->event(dev, I2C_NACK);
+    sc = I2C_SLAVE_GET_CLASS(dev);
+    if (sc->event) {
+        sc->event(dev, I2C_NACK);
+    }
 }
 
 static int i2c_slave_post_load(void *opaque, int version_id)
@@ -169,20 +198,23 @@ const VMStateDescription vmstate_i2c_slave = {
 
 static int i2c_slave_qdev_init(DeviceState *dev, DeviceInfo *base)
 {
-    I2CSlaveInfo *info = container_of(base, I2CSlaveInfo, qdev);
     I2CSlave *s = I2C_SLAVE_FROM_QDEV(dev);
+    I2CSlaveClass *sc = I2C_SLAVE_GET_CLASS(s);
 
-    s->info = info;
+    return sc->init(s);
+}
 
-    return info->init(s);
+void i2c_register_slave_subclass(DeviceInfo *info, const char *parent)
+{
+    assert(info->size >= sizeof(I2CSlave));
+    info->init = i2c_slave_qdev_init;
+    info->bus_info = &i2c_bus_info;
+    qdev_register_subclass(info, parent);
 }
 
-void i2c_register_slave(I2CSlaveInfo *info)
+void i2c_register_slave(DeviceInfo *info)
 {
-    assert(info->qdev.size >= sizeof(I2CSlave));
-    info->qdev.init = i2c_slave_qdev_init;
-    info->qdev.bus_info = &i2c_bus_info;
-    qdev_register(&info->qdev);
+    i2c_register_slave_subclass(info, TYPE_I2C_SLAVE);
 }
 
 DeviceState *i2c_create_slave(i2c_bus *bus, const char *name, uint8_t addr)
@@ -194,3 +226,18 @@ DeviceState *i2c_create_slave(i2c_bus *bus, const char *name, uint8_t addr)
     qdev_init_nofail(dev);
     return dev;
 }
+
+static TypeInfo i2c_slave_type_info = {
+    .name = TYPE_I2C_SLAVE,
+    .parent = TYPE_DEVICE,
+    .instance_size = sizeof(I2CSlave),
+    .abstract = true,
+    .class_size = sizeof(I2CSlaveClass),
+};
+
+static void i2c_slave_register_devices(void)
+{
+    type_register_static(&i2c_slave_type_info);
+}
+
+device_init(i2c_slave_register_devices);
diff --git a/hw/i2c.h b/hw/i2c.h
index d45cdad4e9..31fd59c82c 100644
--- a/hw/i2c.h
+++ b/hw/i2c.h
@@ -17,29 +17,34 @@ enum i2c_event {
 
 typedef struct I2CSlave I2CSlave;
 
-/* Master to slave.  */
-typedef int (*i2c_send_cb)(I2CSlave *s, uint8_t data);
-/* Slave to master.  */
-typedef int (*i2c_recv_cb)(I2CSlave *s);
-/* Notify the slave of a bus state change.  */
-typedef void (*i2c_event_cb)(I2CSlave *s, enum i2c_event event);
+#define TYPE_I2C_SLAVE "i2c-slave"
+#define I2C_SLAVE(obj) \
+     OBJECT_CHECK(I2CSlave, (obj), TYPE_I2C_SLAVE)
+#define I2C_SLAVE_CLASS(klass) \
+     OBJECT_CLASS_CHECK(I2CSlaveClass, (klass), TYPE_I2C_SLAVE)
+#define I2C_SLAVE_GET_CLASS(obj) \
+     OBJECT_GET_CLASS(I2CSlaveClass, (obj), TYPE_I2C_SLAVE)
+
+typedef struct I2CSlaveClass
+{
+    DeviceClass parent_class;
+
+    /* Callbacks provided by the device.  */
+    int (*init)(I2CSlave *dev);
 
-typedef int (*i2c_slave_initfn)(I2CSlave *dev);
+    /* Master to slave.  */
+    int (*send)(I2CSlave *s, uint8_t data);
 
-typedef struct {
-    DeviceInfo qdev;
+    /* Slave to master.  */
+    int (*recv)(I2CSlave *s);
 
-    /* Callbacks provided by the device.  */
-    i2c_slave_initfn init;
-    i2c_event_cb event;
-    i2c_recv_cb recv;
-    i2c_send_cb send;
-} I2CSlaveInfo;
+    /* Notify the slave of a bus state change.  */
+    void (*event)(I2CSlave *s, enum i2c_event event);
+} I2CSlaveClass;
 
 struct I2CSlave
 {
     DeviceState qdev;
-    I2CSlaveInfo *info;
 
     /* Remaining fields for internal use by the I2C code.  */
     uint8_t address;
@@ -57,7 +62,8 @@ int i2c_recv(i2c_bus *bus);
 #define I2C_SLAVE_FROM_QDEV(dev) DO_UPCAST(I2CSlave, qdev, dev)
 #define FROM_I2C_SLAVE(type, dev) DO_UPCAST(type, i2c, dev)
 
-void i2c_register_slave(I2CSlaveInfo *type);
+void i2c_register_slave(DeviceInfo *type);
+void i2c_register_slave_subclass(DeviceInfo *info, const char *parent);
 
 DeviceState *i2c_create_slave(i2c_bus *bus, const char *name, uint8_t addr);
 
diff --git a/hw/lm832x.c b/hw/lm832x.c
index 9e53cb3554..84f81fe132 100644
--- a/hw/lm832x.c
+++ b/hw/lm832x.c
@@ -494,14 +494,21 @@ void lm832x_key_event(DeviceState *dev, int key, int state)
     lm_kbd_irq_update(s);
 }
 
-static I2CSlaveInfo lm8323_info = {
-    .qdev.name = "lm8323",
-    .qdev.size = sizeof(LM823KbdState),
-    .qdev.vmsd = &vmstate_lm_kbd,
-    .init = lm8323_init,
-    .event = lm_i2c_event,
-    .recv = lm_i2c_rx,
-    .send = lm_i2c_tx
+static void lm8323_class_init(ObjectClass *klass, void *data)
+{
+    I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
+
+    k->init = lm8323_init;
+    k->event = lm_i2c_event;
+    k->recv = lm_i2c_rx;
+    k->send = lm_i2c_tx;
+}
+
+static DeviceInfo lm8323_info = {
+    .name = "lm8323",
+    .size = sizeof(LM823KbdState),
+    .vmsd = &vmstate_lm_kbd,
+    .class_init = lm8323_class_init,
 };
 
 static void lm832x_register_devices(void)
diff --git a/hw/max7310.c b/hw/max7310.c
index a955236cfb..0cc3219e80 100644
--- a/hw/max7310.c
+++ b/hw/max7310.c
@@ -185,15 +185,22 @@ static int max7310_init(I2CSlave *i2c)
     return 0;
 }
 
-static I2CSlaveInfo max7310_info = {
-    .qdev.name = "max7310",
-    .qdev.size = sizeof(MAX7310State),
-    .qdev.vmsd = &vmstate_max7310,
-    .qdev.reset = max7310_reset,
-    .init = max7310_init,
-    .event = max7310_event,
-    .recv = max7310_rx,
-    .send = max7310_tx
+static void max7310_class_init(ObjectClass *klass, void *data)
+{
+    I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
+
+    k->init = max7310_init;
+    k->event = max7310_event;
+    k->recv = max7310_rx;
+    k->send = max7310_tx;
+}
+
+static DeviceInfo max7310_info = {
+    .name = "max7310",
+    .size = sizeof(MAX7310State),
+    .vmsd = &vmstate_max7310,
+    .reset = max7310_reset,
+    .class_init = max7310_class_init,
 };
 
 static void max7310_register_devices(void)
diff --git a/hw/pxa2xx.c b/hw/pxa2xx.c
index 895fb3fc81..2ebb739e84 100644
--- a/hw/pxa2xx.c
+++ b/hw/pxa2xx.c
@@ -1472,13 +1472,20 @@ static int pxa2xx_i2c_slave_init(I2CSlave *i2c)
     return 0;
 }
 
-static I2CSlaveInfo pxa2xx_i2c_slave_info = {
-    .qdev.name = "pxa2xx-i2c-slave",
-    .qdev.size = sizeof(PXA2xxI2CSlaveState),
-    .init = pxa2xx_i2c_slave_init,
-    .event = pxa2xx_i2c_event,
-    .recv = pxa2xx_i2c_rx,
-    .send = pxa2xx_i2c_tx
+static void pxapxa2xx_i2c_slave_class_init(ObjectClass *klass, void *data)
+{
+    I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
+
+    k->init = pxa2xx_i2c_slave_init;
+    k->event = pxa2xx_i2c_event;
+    k->recv = pxa2xx_i2c_rx;
+    k->send = pxa2xx_i2c_tx;
+}
+
+static DeviceInfo pxa2xx_i2c_slave_info = {
+    .name = "pxa2xx-i2c-slave",
+    .size = sizeof(PXA2xxI2CSlaveState),
+    .class_init = pxapxa2xx_i2c_slave_class_init,
 };
 
 PXA2xxI2CState *pxa2xx_i2c_init(target_phys_addr_t base,
diff --git a/hw/smbus.c b/hw/smbus.c
index 0cb35667ec..ed31a5961b 100644
--- a/hw/smbus.c
+++ b/hw/smbus.c
@@ -37,37 +37,38 @@ enum {
 
 static void smbus_do_quick_cmd(SMBusDevice *dev, int recv)
 {
-    SMBusDeviceInfo *t = container_of(dev->i2c.info, SMBusDeviceInfo, i2c);
+    SMBusDeviceClass *sc = SMBUS_DEVICE_GET_CLASS(dev);
 
     DPRINTF("Quick Command %d\n", recv);
-    if (t->quick_cmd)
-        t->quick_cmd(dev, recv);
+    if (sc->quick_cmd) {
+        sc->quick_cmd(dev, recv);
+    }
 }
 
 static void smbus_do_write(SMBusDevice *dev)
 {
-    SMBusDeviceInfo *t = container_of(dev->i2c.info, SMBusDeviceInfo, i2c);
+    SMBusDeviceClass *sc = SMBUS_DEVICE_GET_CLASS(dev);
 
     if (dev->data_len == 0) {
         smbus_do_quick_cmd(dev, 0);
     } else if (dev->data_len == 1) {
         DPRINTF("Send Byte\n");
-        if (t->send_byte) {
-            t->send_byte(dev, dev->data_buf[0]);
+        if (sc->send_byte) {
+            sc->send_byte(dev, dev->data_buf[0]);
         }
     } else {
         dev->command = dev->data_buf[0];
         DPRINTF("Command %d len %d\n", dev->command, dev->data_len - 1);
-        if (t->write_data) {
-            t->write_data(dev, dev->command, dev->data_buf + 1,
-                          dev->data_len - 1);
+        if (sc->write_data) {
+            sc->write_data(dev, dev->command, dev->data_buf + 1,
+                           dev->data_len - 1);
         }
     }
 }
 
 static void smbus_i2c_event(I2CSlave *s, enum i2c_event event)
 {
-    SMBusDevice *dev = FROM_I2C_SLAVE(SMBusDevice, s);
+    SMBusDevice *dev = SMBUS_DEVICE(s);
 
     switch (event) {
     case I2C_START_SEND:
@@ -150,14 +151,14 @@ static void smbus_i2c_event(I2CSlave *s, enum i2c_event event)
 
 static int smbus_i2c_recv(I2CSlave *s)
 {
-    SMBusDeviceInfo *t = container_of(s->info, SMBusDeviceInfo, i2c);
-    SMBusDevice *dev = FROM_I2C_SLAVE(SMBusDevice, s);
+    SMBusDevice *dev = SMBUS_DEVICE(s);
+    SMBusDeviceClass *sc = SMBUS_DEVICE_GET_CLASS(dev);
     int ret;
 
     switch (dev->mode) {
     case SMBUS_RECV_BYTE:
-        if (t->receive_byte) {
-            ret = t->receive_byte(dev);
+        if (sc->receive_byte) {
+            ret = sc->receive_byte(dev);
         } else {
             ret = 0;
         }
@@ -165,8 +166,8 @@ static int smbus_i2c_recv(I2CSlave *s)
         dev->mode = SMBUS_DONE;
         break;
     case SMBUS_READ_DATA:
-        if (t->read_data) {
-            ret = t->read_data(dev, dev->command, dev->data_len);
+        if (sc->read_data) {
+            ret = sc->read_data(dev, dev->command, dev->data_len);
             dev->data_len++;
         } else {
             ret = 0;
@@ -184,7 +185,7 @@ static int smbus_i2c_recv(I2CSlave *s)
 
 static int smbus_i2c_send(I2CSlave *s, uint8_t data)
 {
-    SMBusDevice *dev = FROM_I2C_SLAVE(SMBusDevice, s);
+    SMBusDevice *dev = SMBUS_DEVICE(s);
 
     switch (dev->mode) {
     case SMBUS_WRITE_DATA:
@@ -200,20 +201,16 @@ static int smbus_i2c_send(I2CSlave *s, uint8_t data)
 
 static int smbus_device_init(I2CSlave *i2c)
 {
-    SMBusDeviceInfo *t = container_of(i2c->info, SMBusDeviceInfo, i2c);
-    SMBusDevice *dev = FROM_I2C_SLAVE(SMBusDevice, i2c);
+    SMBusDevice *dev = SMBUS_DEVICE(i2c);
+    SMBusDeviceClass *sc = SMBUS_DEVICE_GET_CLASS(dev);
 
-    return t->init(dev);
+    return sc->init(dev);
 }
 
-void smbus_register_device(SMBusDeviceInfo *info)
+void smbus_register_device(DeviceInfo *info)
 {
-    assert(info->i2c.qdev.size >= sizeof(SMBusDevice));
-    info->i2c.init = smbus_device_init;
-    info->i2c.event = smbus_i2c_event;
-    info->i2c.recv = smbus_i2c_recv;
-    info->i2c.send = smbus_i2c_send;
-    i2c_register_slave(&info->i2c);
+    assert(info->size >= sizeof(SMBusDevice));
+    i2c_register_slave_subclass(info, TYPE_SMBUS_DEVICE);
 }
 
 /* Master device commands.  */
@@ -316,3 +313,29 @@ void smbus_write_block(i2c_bus *bus, uint8_t addr, uint8_t command, uint8_t *dat
         i2c_send(bus, data[i]);
     i2c_end_transfer(bus);
 }
+
+static void smbus_device_class_init(ObjectClass *klass, void *data)
+{
+    I2CSlaveClass *sc = I2C_SLAVE_CLASS(klass);
+
+    sc->init = smbus_device_init;
+    sc->event = smbus_i2c_event;
+    sc->recv = smbus_i2c_recv;
+    sc->send = smbus_i2c_send;
+}
+
+static TypeInfo smbus_device_type_info = {
+    .name = TYPE_SMBUS_DEVICE,
+    .parent = TYPE_I2C_SLAVE,
+    .instance_size = sizeof(SMBusDevice),
+    .abstract = true,
+    .class_size = sizeof(SMBusDeviceClass),
+    .class_init = smbus_device_class_init,
+};
+
+static void smbus_device_register_devices(void)
+{
+    type_register_static(&smbus_device_type_info);
+}
+
+device_init(smbus_device_register_devices);
diff --git a/hw/smbus.h b/hw/smbus.h
index 2f2d49e29e..90fadee56e 100644
--- a/hw/smbus.h
+++ b/hw/smbus.h
@@ -1,3 +1,6 @@
+#ifndef QEMU_SMBUS_H
+#define QEMU_SMBUS_H
+
 /*
  * QEMU SMBus API
  *
@@ -24,19 +27,17 @@
 
 #include "i2c.h"
 
-struct SMBusDevice {
-    /* The SMBus protocol is implemented on top of I2C.  */
-    I2CSlave i2c;
-
-    /* Remaining fields for internal use only.  */
-    int mode;
-    int data_len;
-    uint8_t data_buf[34]; /* command + len + 32 bytes of data.  */
-    uint8_t command;
-};
+#define TYPE_SMBUS_DEVICE "smbus-device"
+#define SMBUS_DEVICE(obj) \
+     OBJECT_CHECK(SMBusDevice, (obj), TYPE_SMBUS_DEVICE)
+#define SMBUS_DEVICE_CLASS(klass) \
+     OBJECT_CLASS_CHECK(SMBusDeviceClass, (klass), TYPE_SMBUS_DEVICE)
+#define SMBUS_DEVICE_GET_CLASS(obj) \
+     OBJECT_GET_CLASS(SMBusDeviceClass, (obj), TYPE_SMBUS_DEVICE)
 
-typedef struct {
-    I2CSlaveInfo i2c;
+typedef struct SMBusDeviceClass
+{
+    I2CSlaveClass parent_class;
     int (*init)(SMBusDevice *dev);
     void (*quick_cmd)(SMBusDevice *dev, uint8_t read);
     void (*send_byte)(SMBusDevice *dev, uint8_t val);
@@ -51,9 +52,20 @@ typedef struct {
        byte at a time.  The device is responsible for adding the length
        byte on block reads.  */
     uint8_t (*read_data)(SMBusDevice *dev, uint8_t cmd, int n);
-} SMBusDeviceInfo;
+} SMBusDeviceClass;
 
-void smbus_register_device(SMBusDeviceInfo *info);
+struct SMBusDevice {
+    /* The SMBus protocol is implemented on top of I2C.  */
+    I2CSlave i2c;
+
+    /* Remaining fields for internal use only.  */
+    int mode;
+    int data_len;
+    uint8_t data_buf[34]; /* command + len + 32 bytes of data.  */
+    uint8_t command;
+};
+
+void smbus_register_device(DeviceInfo *info);
 
 /* Master device commands.  */
 void smbus_quick_command(i2c_bus *bus, uint8_t addr, int read);
@@ -69,3 +81,5 @@ void smbus_write_block(i2c_bus *bus, uint8_t addr, uint8_t command, uint8_t *dat
 
 void smbus_eeprom_init(i2c_bus *smbus, int nb_eeprom,
                        const uint8_t *eeprom_spd, int size);
+
+#endif
diff --git a/hw/smbus_eeprom.c b/hw/smbus_eeprom.c
index 5d080abed7..401dff5c27 100644
--- a/hw/smbus_eeprom.c
+++ b/hw/smbus_eeprom.c
@@ -104,19 +104,26 @@ static int smbus_eeprom_initfn(SMBusDevice *dev)
     return 0;
 }
 
-static SMBusDeviceInfo smbus_eeprom_info = {
-    .i2c.qdev.name = "smbus-eeprom",
-    .i2c.qdev.size = sizeof(SMBusEEPROMDevice),
-    .i2c.qdev.props = (Property[]) {
+static void smbus_eeprom_class_initfn(ObjectClass *klass, void *data)
+{
+    SMBusDeviceClass *sc = SMBUS_DEVICE_CLASS(klass);
+
+    sc->init = smbus_eeprom_initfn;
+    sc->quick_cmd = eeprom_quick_cmd;
+    sc->send_byte = eeprom_send_byte;
+    sc->receive_byte = eeprom_receive_byte;
+    sc->write_data = eeprom_write_data;
+    sc->read_data = eeprom_read_data;
+}
+
+static DeviceInfo smbus_eeprom_info = {
+    .name = "smbus-eeprom",
+    .size = sizeof(SMBusEEPROMDevice),
+    .class_init = smbus_eeprom_class_initfn,
+    .props = (Property[]) {
         DEFINE_PROP_PTR("data", SMBusEEPROMDevice, data),
         DEFINE_PROP_END_OF_LIST(),
     },
-    .init = smbus_eeprom_initfn,
-    .quick_cmd = eeprom_quick_cmd,
-    .send_byte = eeprom_send_byte,
-    .receive_byte = eeprom_receive_byte,
-    .write_data = eeprom_write_data,
-    .read_data = eeprom_read_data
 };
 
 static void smbus_eeprom_register_devices(void)
diff --git a/hw/ssd0303.c b/hw/ssd0303.c
index 6a9a8a71e3..acf027fa43 100644
--- a/hw/ssd0303.c
+++ b/hw/ssd0303.c
@@ -294,14 +294,21 @@ static int ssd0303_init(I2CSlave *i2c)
     return 0;
 }
 
-static I2CSlaveInfo ssd0303_info = {
-    .qdev.name = "ssd0303",
-    .qdev.size = sizeof(ssd0303_state),
-    .qdev.vmsd = &vmstate_ssd0303,
-    .init = ssd0303_init,
-    .event = ssd0303_event,
-    .recv = ssd0303_recv,
-    .send = ssd0303_send
+static void ssd0303_class_init(ObjectClass *klass, void *data)
+{
+    I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
+
+    k->init = ssd0303_init;
+    k->event = ssd0303_event;
+    k->recv = ssd0303_recv;
+    k->send = ssd0303_send;
+}
+
+static DeviceInfo ssd0303_info = {
+    .name = "ssd0303",
+    .size = sizeof(ssd0303_state),
+    .vmsd = &vmstate_ssd0303,
+    .class_init = ssd0303_class_init,
 };
 
 static void ssd0303_register_devices(void)
diff --git a/hw/tmp105.c b/hw/tmp105.c
index ed8a0f3fc8..12fe60d019 100644
--- a/hw/tmp105.c
+++ b/hw/tmp105.c
@@ -226,14 +226,21 @@ static int tmp105_init(I2CSlave *i2c)
     return 0;
 }
 
-static I2CSlaveInfo tmp105_info = {
-    .qdev.name = "tmp105",
-    .qdev.size = sizeof(TMP105State),
-    .qdev.vmsd = &vmstate_tmp105,
-    .init = tmp105_init,
-    .event = tmp105_event,
-    .recv = tmp105_rx,
-    .send = tmp105_tx
+static void tmp105_class_init(ObjectClass *klass, void *data)
+{
+    I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
+
+    k->init = tmp105_init;
+    k->event = tmp105_event;
+    k->recv = tmp105_rx;
+    k->send = tmp105_tx;
+}
+
+static DeviceInfo tmp105_info = {
+    .name = "tmp105",
+    .size = sizeof(TMP105State),
+    .vmsd = &vmstate_tmp105,
+    .class_init = tmp105_class_init,
 };
 
 static void tmp105_register_devices(void)
diff --git a/hw/tosa.c b/hw/tosa.c
index 5f4968de24..9f112b1349 100644
--- a/hw/tosa.c
+++ b/hw/tosa.c
@@ -259,13 +259,20 @@ static void tosapda_machine_init(void)
 
 machine_init(tosapda_machine_init);
 
-static I2CSlaveInfo tosa_dac_info = {
-    .qdev.name = "tosa_dac",
-    .qdev.size = sizeof(TosaDACState),
-    .init = tosa_dac_init,
-    .event = tosa_dac_event,
-    .recv = tosa_dac_recv,
-    .send = tosa_dac_send
+static void tosa_dac_class_init(ObjectClass *klass, void *data)
+{
+    I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
+
+    k->init = tosa_dac_init;
+    k->event = tosa_dac_event;
+    k->recv = tosa_dac_recv;
+    k->send = tosa_dac_send;
+}
+
+static DeviceInfo tosa_dac_info = {
+    .name = "tosa_dac",
+    .size = sizeof(TosaDACState),
+    .class_init = tosa_dac_class_init,
  };
 
 static void tosa_ssp_class_init(ObjectClass *klass, void *data)
diff --git a/hw/twl92230.c b/hw/twl92230.c
index ced705c2b9..ba4f8aae75 100644
--- a/hw/twl92230.c
+++ b/hw/twl92230.c
@@ -857,14 +857,21 @@ static int twl92230_init(I2CSlave *i2c)
     return 0;
 }
 
-static I2CSlaveInfo twl92230_info = {
-    .qdev.name ="twl92230",
-    .qdev.size = sizeof(MenelausState),
-    .qdev.vmsd = &vmstate_menelaus,
-    .init = twl92230_init,
-    .event = menelaus_event,
-    .recv = menelaus_rx,
-    .send = menelaus_tx
+static void twl92230_class_init(ObjectClass *klass, void *data)
+{
+    I2CSlaveClass *sc = I2C_SLAVE_CLASS(klass);
+
+    sc->init = twl92230_init;
+    sc->event = menelaus_event;
+    sc->recv = menelaus_rx;
+    sc->send = menelaus_tx;
+}
+
+static DeviceInfo twl92230_info = {
+    .name ="twl92230",
+    .size = sizeof(MenelausState),
+    .vmsd = &vmstate_menelaus,
+    .class_init = twl92230_class_init,
 };
 
 static void twl92230_register_devices(void)
diff --git a/hw/wm8750.c b/hw/wm8750.c
index 5526bc49aa..33bce0d48a 100644
--- a/hw/wm8750.c
+++ b/hw/wm8750.c
@@ -689,14 +689,21 @@ void wm8750_set_bclk_in(void *opaque, int new_hz)
     wm8750_clk_update(s, 1);
 }
 
-static I2CSlaveInfo wm8750_info = {
-    .qdev.name = "wm8750",
-    .qdev.size = sizeof(WM8750State),
-    .qdev.vmsd = &vmstate_wm8750,
-    .init = wm8750_init,
-    .event = wm8750_event,
-    .recv = wm8750_rx,
-    .send = wm8750_tx
+static void wm8750_class_init(ObjectClass *klass, void *data)
+{
+    I2CSlaveClass *sc = I2C_SLAVE_CLASS(klass);
+
+    sc->init = wm8750_init;
+    sc->event = wm8750_event;
+    sc->recv = wm8750_rx;
+    sc->send = wm8750_tx;
+}
+
+static DeviceInfo wm8750_info = {
+    .name = "wm8750",
+    .size = sizeof(WM8750State),
+    .vmsd = &vmstate_wm8750,
+    .class_init = wm8750_class_init,
 };
 
 static void wm8750_register_devices(void)
diff --git a/hw/z2.c b/hw/z2.c
index 2984a60bd9..b12f974720 100644
--- a/hw/z2.c
+++ b/hw/z2.c
@@ -273,14 +273,21 @@ static VMStateDescription vmstate_aer915_state = {
     }
 };
 
-static I2CSlaveInfo aer915_info = {
-    .qdev.name = "aer915",
-    .qdev.size = sizeof(AER915State),
-    .qdev.vmsd = &vmstate_aer915_state,
-    .init = aer915_init,
-    .event = aer915_event,
-    .recv = aer915_recv,
-    .send = aer915_send
+static void aer915_class_init(ObjectClass *klass, void *data)
+{
+    I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
+
+    k->init = aer915_init;
+    k->event = aer915_event;
+    k->recv = aer915_recv;
+    k->send = aer915_send;
+}
+
+static DeviceInfo aer915_info = {
+    .name = "aer915",
+    .size = sizeof(AER915State),
+    .vmsd = &vmstate_aer915_state,
+    .class_init = aer915_class_init,
 };
 
 static void z2_init(ram_addr_t ram_size,