diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c
index 5d55a3c222013d514e5f7ab58311c0174733dda3..33e812d238a213f8b0ab6e8f622a6eeaabdc1143 100644
--- a/hw/acpi/piix4.c
+++ b/hw/acpi/piix4.c
@@ -517,9 +517,9 @@ Object *piix4_pm_find(void)
     return o;
 }
 
-i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
-                       qemu_irq sci_irq, qemu_irq smi_irq,
-                       int kvm_enabled, FWCfgState *fw_cfg)
+I2CBus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
+                      qemu_irq sci_irq, qemu_irq smi_irq,
+                      int kvm_enabled, FWCfgState *fw_cfg)
 {
     DeviceState *dev;
     PIIX4PMState *s;
diff --git a/hw/arm/exynos4210.c b/hw/arm/exynos4210.c
index 4ebb9381b01646a80e03e99f547d1bfbcd50932d..9f137e9acd9792e2941ee6bb3a7c5eaae634c542 100644
--- a/hw/arm/exynos4210.c
+++ b/hw/arm/exynos4210.c
@@ -326,7 +326,7 @@ Exynos4210State *exynos4210_init(MemoryRegion *system_mem,
         busdev = SYS_BUS_DEVICE(dev);
         sysbus_connect_irq(busdev, 0, i2c_irq);
         sysbus_mmio_map(busdev, 0, addr);
-        s->i2c_if[n] = (i2c_bus *)qdev_get_child_bus(dev, "i2c");
+        s->i2c_if[n] = (I2CBus *)qdev_get_child_bus(dev, "i2c");
     }
 
 
diff --git a/hw/arm/musicpal.c b/hw/arm/musicpal.c
index 023e8756e2ebfabff0fbd078f9230daa349120a1..50a3b8fe4f264ede64f2ca8345d4c6bb5c90a576 100644
--- a/hw/arm/musicpal.c
+++ b/hw/arm/musicpal.c
@@ -1593,7 +1593,7 @@ static void musicpal_init(QEMUMachineInitArgs *args)
     DeviceState *key_dev;
     DeviceState *wm8750_dev;
     SysBusDevice *s;
-    i2c_bus *i2c;
+    I2CBus *i2c;
     int i;
     unsigned long flash_size;
     DriveInfo *dinfo;
@@ -1687,7 +1687,7 @@ static void musicpal_init(QEMUMachineInitArgs *args)
     dev = sysbus_create_simple(TYPE_MUSICPAL_GPIO, MP_GPIO_BASE,
                                pic[MP_GPIO_IRQ]);
     i2c_dev = sysbus_create_simple("gpio_i2c", -1, NULL);
-    i2c = (i2c_bus *)qdev_get_child_bus(i2c_dev, "i2c");
+    i2c = (I2CBus *)qdev_get_child_bus(i2c_dev, "i2c");
 
     lcd_dev = sysbus_create_simple(TYPE_MUSICPAL_LCD, MP_LCD_BASE, NULL);
     key_dev = sysbus_create_simple(TYPE_MUSICPAL_KEY, -1, NULL);
diff --git a/hw/arm/nseries.c b/hw/arm/nseries.c
index 9ef31ca37ab50bc3d8f4c18688c3f441818892e5..c28f895c7af651d074fed5c1e46f8409d74cea39 100644
--- a/hw/arm/nseries.c
+++ b/hw/arm/nseries.c
@@ -202,7 +202,7 @@ static void n8x0_i2c_setup(struct n800_s *s)
 {
     DeviceState *dev;
     qemu_irq tmp_irq = qdev_get_gpio_in(s->mpu->gpio, N8X0_TMP105_GPIO);
-    i2c_bus *i2c = omap_i2c_bus(s->mpu->i2c[0]);
+    I2CBus *i2c = omap_i2c_bus(s->mpu->i2c[0]);
 
     /* Attach a menelaus PM chip */
     dev = i2c_create_slave(i2c, "twl92230", N8X0_MENELAUS_ADDR);
diff --git a/hw/arm/pxa2xx.c b/hw/arm/pxa2xx.c
index 25ec549e7137abe1b4546115d9728a0617122db3..7de109c92b1483a56e861defea852a7045953764 100644
--- a/hw/arm/pxa2xx.c
+++ b/hw/arm/pxa2xx.c
@@ -1238,7 +1238,7 @@ struct PXA2xxI2CState {
 
     MemoryRegion iomem;
     PXA2xxI2CSlaveState *slave;
-    i2c_bus *bus;
+    I2CBus *bus;
     qemu_irq irq;
     uint32_t offset;
     uint32_t region_size;
@@ -1482,7 +1482,7 @@ PXA2xxI2CState *pxa2xx_i2c_init(hwaddr base,
     DeviceState *dev;
     SysBusDevice *i2c_dev;
     PXA2xxI2CState *s;
-    i2c_bus *i2cbus;
+    I2CBus *i2cbus;
 
     dev = qdev_create(NULL, TYPE_PXA2XX_I2C);
     qdev_prop_set_uint32(dev, "size", region_size + 1);
@@ -1518,7 +1518,7 @@ static int pxa2xx_i2c_initfn(SysBusDevice *sbd)
     return 0;
 }
 
-i2c_bus *pxa2xx_i2c_bus(PXA2xxI2CState *s)
+I2CBus *pxa2xx_i2c_bus(PXA2xxI2CState *s)
 {
     return s->bus;
 }
diff --git a/hw/arm/realview.c b/hw/arm/realview.c
index 8d845ddb730629e30700b6ae430016cfd0e5adc6..6ef764600211b7f4530d8c8e6a4375135e3d3974 100644
--- a/hw/arm/realview.c
+++ b/hw/arm/realview.c
@@ -60,7 +60,7 @@ static void realview_init(QEMUMachineInitArgs *args,
     qemu_irq mmc_irq[2];
     PCIBus *pci_bus = NULL;
     NICInfo *nd;
-    i2c_bus *i2c;
+    I2CBus *i2c;
     int n;
     int done_nic = 0;
     qemu_irq cpu_irq[4];
@@ -255,7 +255,7 @@ static void realview_init(QEMUMachineInitArgs *args,
     }
 
     dev = sysbus_create_simple("versatile_i2c", 0x10002000, NULL);
-    i2c = (i2c_bus *)qdev_get_child_bus(dev, "i2c");
+    i2c = (I2CBus *)qdev_get_child_bus(dev, "i2c");
     i2c_create_slave(i2c, "ds1338", 0x68);
 
     /* Memory map for RealView Emulation Baseboard:  */
diff --git a/hw/arm/spitz.c b/hw/arm/spitz.c
index ba172835ebff9fe579f2511435388146fdc75b48..2decff170f36276008ecc1e0d3276a8a6e7e444d 100644
--- a/hw/arm/spitz.c
+++ b/hw/arm/spitz.c
@@ -734,7 +734,7 @@ static void spitz_wm8750_addr(void *opaque, int line, int level)
 static void spitz_i2c_setup(PXA2xxState *cpu)
 {
     /* Attach the CPU on one end of our I2C bus.  */
-    i2c_bus *bus = pxa2xx_i2c_bus(cpu->i2c[0]);
+    I2CBus *bus = pxa2xx_i2c_bus(cpu->i2c[0]);
 
     DeviceState *wm;
 
diff --git a/hw/arm/stellaris.c b/hw/arm/stellaris.c
index 3170d69d42dc6229bb9bce4d6d985609000bd606..d6cc77b458e7e4a716c1b84ab224530002f5e632 100644
--- a/hw/arm/stellaris.c
+++ b/hw/arm/stellaris.c
@@ -692,7 +692,7 @@ static int stellaris_sys_init(uint32_t base, qemu_irq irq,
 typedef struct {
     SysBusDevice parent_obj;
 
-    i2c_bus *bus;
+    I2CBus *bus;
     qemu_irq irq;
     MemoryRegion iomem;
     uint32_t msa;
@@ -868,7 +868,7 @@ static int stellaris_i2c_init(SysBusDevice *sbd)
 {
     DeviceState *dev = DEVICE(sbd);
     stellaris_i2c_state *s = STELLARIS_I2C(dev);
-    i2c_bus *bus;
+    I2CBus *bus;
 
     sysbus_init_irq(sbd, &s->irq);
     bus = i2c_init_bus(dev, "i2c");
@@ -1213,7 +1213,7 @@ static void stellaris_init(const char *kernel_filename, const char *cpu_model,
     qemu_irq adc;
     int sram_size;
     int flash_size;
-    i2c_bus *i2c;
+    I2CBus *i2c;
     DeviceState *dev;
     int i;
     int j;
@@ -1256,7 +1256,7 @@ static void stellaris_init(const char *kernel_filename, const char *cpu_model,
 
     if (board->dc2 & (1 << 12)) {
         dev = sysbus_create_simple(TYPE_STELLARIS_I2C, 0x40020000, pic[8]);
-        i2c = (i2c_bus *)qdev_get_child_bus(dev, "i2c");
+        i2c = (I2CBus *)qdev_get_child_bus(dev, "i2c");
         if (board->peripherals & BP_OLED_I2C) {
             i2c_create_slave(i2c, "ssd0303", 0x3d);
         }
diff --git a/hw/arm/tosa.c b/hw/arm/tosa.c
index c00d8c27ccfd2da2609e79cdc87e44442ee7293c..dd224d33a21845850dc91dd0ebeb2c12c7b6c2e7 100644
--- a/hw/arm/tosa.c
+++ b/hw/arm/tosa.c
@@ -194,7 +194,7 @@ static int tosa_dac_init(I2CSlave *i2c)
 
 static void tosa_tg_init(PXA2xxState *cpu)
 {
-    i2c_bus *bus = pxa2xx_i2c_bus(cpu->i2c[0]);
+    I2CBus *bus = pxa2xx_i2c_bus(cpu->i2c[0]);
     i2c_create_slave(bus, "tosa_dac", DAC_BASE);
     ssi_create_slave(cpu->ssp[1], "tosa-ssp");
 }
diff --git a/hw/arm/versatilepb.c b/hw/arm/versatilepb.c
index aef2bde0c445dc66292bba3a237187a59b1513a4..e5493b428fc1cbc903fce2badf6594114ec53d73 100644
--- a/hw/arm/versatilepb.c
+++ b/hw/arm/versatilepb.c
@@ -185,7 +185,7 @@ static void versatile_init(QEMUMachineInitArgs *args, int board_id)
     DeviceState *pl041;
     PCIBus *pci_bus;
     NICInfo *nd;
-    i2c_bus *i2c;
+    I2CBus *i2c;
     int n;
     int done_smc = 0;
     DriveInfo *dinfo;
@@ -288,7 +288,7 @@ static void versatile_init(QEMUMachineInitArgs *args, int board_id)
     sysbus_create_simple("pl031", 0x101e8000, pic[10]);
 
     dev = sysbus_create_simple("versatile_i2c", 0x10002000, NULL);
-    i2c = (i2c_bus *)qdev_get_child_bus(dev, "i2c");
+    i2c = (I2CBus *)qdev_get_child_bus(dev, "i2c");
     i2c_create_slave(i2c, "ds1338", 0x68);
 
     /* Add PL041 AACI Interface to the LM4549 codec */
diff --git a/hw/arm/z2.c b/hw/arm/z2.c
index 97367b1f8b229222ddadc2106588bde08f869ea8..97ec38193e9c1883389fcda57420ae376ac5db22 100644
--- a/hw/arm/z2.c
+++ b/hw/arm/z2.c
@@ -308,7 +308,7 @@ static void z2_init(QEMUMachineInitArgs *args)
     DriveInfo *dinfo;
     int be;
     void *z2_lcd;
-    i2c_bus *bus;
+    I2CBus *bus;
     DeviceState *wm;
 
     if (!cpu_model) {
diff --git a/hw/i2c/bitbang_i2c.c b/hw/i2c/bitbang_i2c.c
index ca59456d163d121cb6e964d92cc8eb6a5cc84206..6d1bb03d6c6d1d9b88e47dc4c844c2b259ddf68e 100644
--- a/hw/i2c/bitbang_i2c.c
+++ b/hw/i2c/bitbang_i2c.c
@@ -46,7 +46,7 @@ typedef enum bitbang_i2c_state {
 } bitbang_i2c_state;
 
 struct bitbang_i2c_interface {
-    i2c_bus *bus;
+    I2CBus *bus;
     bitbang_i2c_state state;
     int last_data;
     int last_clock;
@@ -170,7 +170,7 @@ int bitbang_i2c_set(bitbang_i2c_interface *i2c, int line, int level)
     abort();
 }
 
-bitbang_i2c_interface *bitbang_i2c_init(i2c_bus *bus)
+bitbang_i2c_interface *bitbang_i2c_init(I2CBus *bus)
 {
     bitbang_i2c_interface *s;
 
@@ -213,7 +213,7 @@ static int gpio_i2c_init(SysBusDevice *sbd)
 {
     DeviceState *dev = DEVICE(sbd);
     GPIOI2CState *s = GPIO_I2C(dev);
-    i2c_bus *bus;
+    I2CBus *bus;
 
     memory_region_init(&s->dummy_iomem, OBJECT(s), "gpio_i2c", 0);
     sysbus_init_mmio(sbd, &s->dummy_iomem);
diff --git a/hw/i2c/bitbang_i2c.h b/hw/i2c/bitbang_i2c.h
index 2866ac351b763a48b26e3372d15a9e5525bd7868..3a7126d5dee87866b434af60b214e1250cb78297 100644
--- a/hw/i2c/bitbang_i2c.h
+++ b/hw/i2c/bitbang_i2c.h
@@ -8,7 +8,7 @@ typedef struct bitbang_i2c_interface bitbang_i2c_interface;
 #define BITBANG_I2C_SDA 0
 #define BITBANG_I2C_SCL 1
 
-bitbang_i2c_interface *bitbang_i2c_init(i2c_bus *bus);
+bitbang_i2c_interface *bitbang_i2c_init(I2CBus *bus);
 int bitbang_i2c_set(bitbang_i2c_interface *i2c, int line, int level);
 
 #endif
diff --git a/hw/i2c/core.c b/hw/i2c/core.c
index c97e7f7dc061ef748986f3233b18b8a9b41f554f..efd8b4fafb3a729bf3ff26fde10d845330655470 100644
--- a/hw/i2c/core.c
+++ b/hw/i2c/core.c
@@ -9,7 +9,7 @@
 
 #include "hw/i2c/i2c.h"
 
-struct i2c_bus
+struct I2CBus
 {
     BusState qbus;
     I2CSlave *current_dev;
@@ -23,24 +23,24 @@ static Property i2c_props[] = {
 };
 
 #define TYPE_I2C_BUS "i2c-bus"
-#define I2C_BUS(obj) OBJECT_CHECK(i2c_bus, (obj), TYPE_I2C_BUS)
+#define I2C_BUS(obj) OBJECT_CHECK(I2CBus, (obj), TYPE_I2C_BUS)
 
 static const TypeInfo i2c_bus_info = {
     .name = TYPE_I2C_BUS,
     .parent = TYPE_BUS,
-    .instance_size = sizeof(i2c_bus),
+    .instance_size = sizeof(I2CBus),
 };
 
 static void i2c_bus_pre_save(void *opaque)
 {
-    i2c_bus *bus = opaque;
+    I2CBus *bus = opaque;
 
     bus->saved_address = bus->current_dev ? bus->current_dev->address : -1;
 }
 
 static int i2c_bus_post_load(void *opaque, int version_id)
 {
-    i2c_bus *bus = opaque;
+    I2CBus *bus = opaque;
 
     /* The bus is loaded before attached devices, so load and save the
        current device id.  Devices will check themselves as loaded.  */
@@ -56,15 +56,15 @@ static const VMStateDescription vmstate_i2c_bus = {
     .pre_save = i2c_bus_pre_save,
     .post_load = i2c_bus_post_load,
     .fields      = (VMStateField []) {
-        VMSTATE_UINT8(saved_address, i2c_bus),
+        VMSTATE_UINT8(saved_address, I2CBus),
         VMSTATE_END_OF_LIST()
     }
 };
 
 /* Create a new I2C bus.  */
-i2c_bus *i2c_init_bus(DeviceState *parent, const char *name)
+I2CBus *i2c_init_bus(DeviceState *parent, const char *name)
 {
-    i2c_bus *bus;
+    I2CBus *bus;
 
     bus = I2C_BUS(qbus_create(TYPE_I2C_BUS, parent, name));
     vmstate_register(NULL, -1, &vmstate_i2c_bus, bus);
@@ -77,14 +77,14 @@ void i2c_set_slave_address(I2CSlave *dev, uint8_t address)
 }
 
 /* Return nonzero if bus is busy.  */
-int i2c_bus_busy(i2c_bus *bus)
+int i2c_bus_busy(I2CBus *bus)
 {
     return bus->current_dev != NULL;
 }
 
 /* Returns non-zero if the address is not valid.  */
 /* TODO: Make this handle multiple masters.  */
-int i2c_start_transfer(i2c_bus *bus, uint8_t address, int recv)
+int i2c_start_transfer(I2CBus *bus, uint8_t address, int recv)
 {
     BusChild *kid;
     I2CSlave *slave = NULL;
@@ -113,7 +113,7 @@ int i2c_start_transfer(i2c_bus *bus, uint8_t address, int recv)
     return 0;
 }
 
-void i2c_end_transfer(i2c_bus *bus)
+void i2c_end_transfer(I2CBus *bus)
 {
     I2CSlave *dev = bus->current_dev;
     I2CSlaveClass *sc;
@@ -130,7 +130,7 @@ void i2c_end_transfer(i2c_bus *bus)
     bus->current_dev = NULL;
 }
 
-int i2c_send(i2c_bus *bus, uint8_t data)
+int i2c_send(I2CBus *bus, uint8_t data)
 {
     I2CSlave *dev = bus->current_dev;
     I2CSlaveClass *sc;
@@ -147,7 +147,7 @@ int i2c_send(i2c_bus *bus, uint8_t data)
     return -1;
 }
 
-int i2c_recv(i2c_bus *bus)
+int i2c_recv(I2CBus *bus)
 {
     I2CSlave *dev = bus->current_dev;
     I2CSlaveClass *sc;
@@ -164,7 +164,7 @@ int i2c_recv(i2c_bus *bus)
     return -1;
 }
 
-void i2c_nack(i2c_bus *bus)
+void i2c_nack(I2CBus *bus)
 {
     I2CSlave *dev = bus->current_dev;
     I2CSlaveClass *sc;
@@ -182,7 +182,7 @@ void i2c_nack(i2c_bus *bus)
 static int i2c_slave_post_load(void *opaque, int version_id)
 {
     I2CSlave *dev = opaque;
-    i2c_bus *bus;
+    I2CBus *bus;
     bus = I2C_BUS(qdev_get_parent_bus(DEVICE(dev)));
     if (bus->saved_address == dev->address) {
         bus->current_dev = dev;
@@ -210,7 +210,7 @@ static int i2c_slave_qdev_init(DeviceState *dev)
     return sc->init(s);
 }
 
-DeviceState *i2c_create_slave(i2c_bus *bus, const char *name, uint8_t addr)
+DeviceState *i2c_create_slave(I2CBus *bus, const char *name, uint8_t addr)
 {
     DeviceState *dev;
 
diff --git a/hw/i2c/exynos4210_i2c.c b/hw/i2c/exynos4210_i2c.c
index ce5f849c7740bbce8e26b9709a7dd5efb1c6f6c0..fb99dfda1775a350f756e61a10bd99860e6541c0 100644
--- a/hw/i2c/exynos4210_i2c.c
+++ b/hw/i2c/exynos4210_i2c.c
@@ -83,7 +83,7 @@ typedef struct Exynos4210I2CState {
     SysBusDevice parent_obj;
 
     MemoryRegion iomem;
-    i2c_bus *bus;
+    I2CBus *bus;
     qemu_irq irq;
 
     uint8_t i2ccon;
diff --git a/hw/i2c/omap_i2c.c b/hw/i2c/omap_i2c.c
index 2d8e2b7839f9f5096eb59adbb224d9f903d64ac6..d63278dbde539d1f635c5dd77078bf0e14bd59d9 100644
--- a/hw/i2c/omap_i2c.c
+++ b/hw/i2c/omap_i2c.c
@@ -30,7 +30,7 @@ typedef struct OMAPI2CState {
     MemoryRegion iomem;
     qemu_irq irq;
     qemu_irq drq[2];
-    i2c_bus *bus;
+    I2CBus *bus;
 
     uint8_t revision;
     void *iclk;
@@ -491,7 +491,7 @@ static void omap_i2c_register_types(void)
     type_register_static(&omap_i2c_info);
 }
 
-i2c_bus *omap_i2c_bus(DeviceState *omap_i2c)
+I2CBus *omap_i2c_bus(DeviceState *omap_i2c)
 {
     OMAPI2CState *s = OMAP_I2C(omap_i2c);
     return s->bus;
diff --git a/hw/i2c/pm_smbus.c b/hw/i2c/pm_smbus.c
index c98e44753375aff813c9cf3e17ccdf85aa199001..9f500677358c5021c1d5d44cc953dca42e150b47 100644
--- a/hw/i2c/pm_smbus.c
+++ b/hw/i2c/pm_smbus.c
@@ -59,7 +59,7 @@ static void smb_transaction(PMSMBus *s)
     uint8_t read = s->smb_addr & 0x01;
     uint8_t cmd = s->smb_cmd;
     uint8_t addr = s->smb_addr >> 1;
-    i2c_bus *bus = s->smbus;
+    I2CBus *bus = s->smbus;
 
     SMBUS_DPRINTF("SMBus trans addr=0x%02x prot=0x%02x\n", addr, prot);
     /* Transaction isn't exec if STS_DEV_ERR bit set */
diff --git a/hw/i2c/smbus.c b/hw/i2c/smbus.c
index 25d2d04163fe7a0a4baf615b3f778a5a86e80ecf..3febf3c2589fe68270db86e2ed067e312c2f5427 100644
--- a/hw/i2c/smbus.c
+++ b/hw/i2c/smbus.c
@@ -208,13 +208,13 @@ static int smbus_device_init(I2CSlave *i2c)
 }
 
 /* Master device commands.  */
-void smbus_quick_command(i2c_bus *bus, uint8_t addr, int read)
+void smbus_quick_command(I2CBus *bus, uint8_t addr, int read)
 {
     i2c_start_transfer(bus, addr, read);
     i2c_end_transfer(bus);
 }
 
-uint8_t smbus_receive_byte(i2c_bus *bus, uint8_t addr)
+uint8_t smbus_receive_byte(I2CBus *bus, uint8_t addr)
 {
     uint8_t data;
 
@@ -225,14 +225,14 @@ uint8_t smbus_receive_byte(i2c_bus *bus, uint8_t addr)
     return data;
 }
 
-void smbus_send_byte(i2c_bus *bus, uint8_t addr, uint8_t data)
+void smbus_send_byte(I2CBus *bus, uint8_t addr, uint8_t data)
 {
     i2c_start_transfer(bus, addr, 0);
     i2c_send(bus, data);
     i2c_end_transfer(bus);
 }
 
-uint8_t smbus_read_byte(i2c_bus *bus, uint8_t addr, uint8_t command)
+uint8_t smbus_read_byte(I2CBus *bus, uint8_t addr, uint8_t command)
 {
     uint8_t data;
     i2c_start_transfer(bus, addr, 0);
@@ -244,7 +244,7 @@ uint8_t smbus_read_byte(i2c_bus *bus, uint8_t addr, uint8_t command)
     return data;
 }
 
-void smbus_write_byte(i2c_bus *bus, uint8_t addr, uint8_t command, uint8_t data)
+void smbus_write_byte(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t data)
 {
     i2c_start_transfer(bus, addr, 0);
     i2c_send(bus, command);
@@ -252,7 +252,7 @@ void smbus_write_byte(i2c_bus *bus, uint8_t addr, uint8_t command, uint8_t data)
     i2c_end_transfer(bus);
 }
 
-uint16_t smbus_read_word(i2c_bus *bus, uint8_t addr, uint8_t command)
+uint16_t smbus_read_word(I2CBus *bus, uint8_t addr, uint8_t command)
 {
     uint16_t data;
     i2c_start_transfer(bus, addr, 0);
@@ -265,7 +265,7 @@ uint16_t smbus_read_word(i2c_bus *bus, uint8_t addr, uint8_t command)
     return data;
 }
 
-void smbus_write_word(i2c_bus *bus, uint8_t addr, uint8_t command, uint16_t data)
+void smbus_write_word(I2CBus *bus, uint8_t addr, uint8_t command, uint16_t data)
 {
     i2c_start_transfer(bus, addr, 0);
     i2c_send(bus, command);
@@ -274,7 +274,7 @@ void smbus_write_word(i2c_bus *bus, uint8_t addr, uint8_t command, uint16_t data
     i2c_end_transfer(bus);
 }
 
-int smbus_read_block(i2c_bus *bus, uint8_t addr, uint8_t command, uint8_t *data)
+int smbus_read_block(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t *data)
 {
     int len;
     int i;
@@ -292,7 +292,7 @@ int smbus_read_block(i2c_bus *bus, uint8_t addr, uint8_t command, uint8_t *data)
     return len;
 }
 
-void smbus_write_block(i2c_bus *bus, uint8_t addr, uint8_t command, uint8_t *data,
+void smbus_write_block(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t *data,
                        int len)
 {
     int i;
diff --git a/hw/i2c/smbus_eeprom.c b/hw/i2c/smbus_eeprom.c
index 0218f8a0ebb9feacc4448534c3b04d60975d3384..86f35c11de7c6426375a517d3b4eb6dcf8c6e86a 100644
--- a/hw/i2c/smbus_eeprom.c
+++ b/hw/i2c/smbus_eeprom.c
@@ -139,7 +139,7 @@ static void smbus_eeprom_register_types(void)
 
 type_init(smbus_eeprom_register_types)
 
-void smbus_eeprom_init(i2c_bus *smbus, int nb_eeprom,
+void smbus_eeprom_init(I2CBus *smbus, int nb_eeprom,
                        const uint8_t *eeprom_spd, int eeprom_spd_size)
 {
     int i;
diff --git a/hw/i2c/smbus_ich9.c b/hw/i2c/smbus_ich9.c
index 8d47eaffc8abec5039ce840296d8750b950bb563..295b62ed295a1c89e53e521b86140eff8e02ca55 100644
--- a/hw/i2c/smbus_ich9.c
+++ b/hw/i2c/smbus_ich9.c
@@ -108,7 +108,7 @@ static void ich9_smb_class_init(ObjectClass *klass, void *data)
     dc->cannot_instantiate_with_device_add_yet = true;
 }
 
-i2c_bus *ich9_smb_init(PCIBus *bus, int devfn, uint32_t smb_io_base)
+I2CBus *ich9_smb_init(PCIBus *bus, int devfn, uint32_t smb_io_base)
 {
     PCIDevice *d =
         pci_create_simple_multifunction(bus, devfn, true, TYPE_ICH9_SMB_DEVICE);
diff --git a/hw/i2c/versatile_i2c.c b/hw/i2c/versatile_i2c.c
index 02e9f171b9fca2ac1741eb6179a55bed1ce8a81e..3c0c2c10675e58d9a612c4d669cb8eb2d11ecc10 100644
--- a/hw/i2c/versatile_i2c.c
+++ b/hw/i2c/versatile_i2c.c
@@ -81,7 +81,7 @@ static int versatile_i2c_init(SysBusDevice *sbd)
 {
     DeviceState *dev = DEVICE(sbd);
     VersatileI2CState *s = VERSATILE_I2C(dev);
-    i2c_bus *bus;
+    I2CBus *bus;
 
     bus = i2c_init_bus(dev, "i2c");
     s->bitbang = bitbang_i2c_init(bus);
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index a327d71fb1b638a6774e0f3effac99142757f738..3639a6d099be577698e8265f1aefc3735cc79478 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -236,7 +236,7 @@ static void pc_init1(QEMUMachineInitArgs *args,
     }
 
     if (pci_enabled && acpi_enabled) {
-        i2c_bus *smbus;
+        I2CBus *smbus;
 
         smi_irq = qemu_allocate_irqs(pc_acpi_smi_interrupt, first_cpu, 1);
         /* TODO: Populate SPD eeprom data.  */
diff --git a/hw/isa/vt82c686.c b/hw/isa/vt82c686.c
index e639357db3607772c0ca57ffe66ab9c9cdd2d9c3..1a93afda4fce68cda7e0cf4a8a43877c2304ba48 100644
--- a/hw/isa/vt82c686.c
+++ b/hw/isa/vt82c686.c
@@ -369,8 +369,8 @@ static int vt82c686b_pm_initfn(PCIDevice *dev)
     return 0;
 }
 
-i2c_bus *vt82c686b_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
-                       qemu_irq sci_irq)
+I2CBus *vt82c686b_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
+                          qemu_irq sci_irq)
 {
     PCIDevice *dev;
     VT686PMState *s;
diff --git a/hw/mips/mips_fulong2e.c b/hw/mips/mips_fulong2e.c
index 9ef3a978e2ff5c4b9b6682ba8315ea309c0fe98f..e1551aabe279ad6ceb67813068076018d40ae142 100644
--- a/hw/mips/mips_fulong2e.c
+++ b/hw/mips/mips_fulong2e.c
@@ -276,7 +276,7 @@ static void mips_fulong2e_init(QEMUMachineInitArgs *args)
     qemu_irq *cpu_exit_irq;
     PCIBus *pci_bus;
     ISABus *isa_bus;
-    i2c_bus *smbus;
+    I2CBus *smbus;
     int i;
     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
     MIPSCPU *cpu;
diff --git a/hw/mips/mips_malta.c b/hw/mips/mips_malta.c
index 05c87712205e5e2a6436d054e9daece87393f1cb..ac5ec44db02c5ff145742c79afef9a67ea1b924d 100644
--- a/hw/mips/mips_malta.c
+++ b/hw/mips/mips_malta.c
@@ -900,7 +900,7 @@ void mips_malta_init(QEMUMachineInitArgs *args)
     qemu_irq *isa_irq;
     qemu_irq *cpu_exit_irq;
     int piix4_devfn;
-    i2c_bus *smbus;
+    I2CBus *smbus;
     int i;
     DriveInfo *dinfo;
     DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS];
diff --git a/include/hw/arm/exynos4210.h b/include/hw/arm/exynos4210.h
index bb9a1dddc8db0d0c1ad3df2c74129764a0e4ac6f..5c1820f88329eb87845255563a1f744db31dbd37 100644
--- a/include/hw/arm/exynos4210.h
+++ b/include/hw/arm/exynos4210.h
@@ -97,7 +97,7 @@ typedef struct Exynos4210State {
     MemoryRegion dram1_mem;
     MemoryRegion boot_secondary;
     MemoryRegion bootreg_mem;
-    i2c_bus *i2c_if[EXYNOS4210_I2C_NUMBER];
+    I2CBus *i2c_if[EXYNOS4210_I2C_NUMBER];
 } Exynos4210State;
 
 void exynos4210_write_secondary(ARMCPU *cpu,
diff --git a/include/hw/arm/omap.h b/include/hw/arm/omap.h
index 188cda8771ee89a7387e32e177ec9e1aab6795fa..b9655ee397cf14e29cd17430e81afd7873f4e704 100644
--- a/include/hw/arm/omap.h
+++ b/include/hw/arm/omap.h
@@ -765,7 +765,7 @@ void omap_mmc_handlers(struct omap_mmc_s *s, qemu_irq ro, qemu_irq cover);
 void omap_mmc_enable(struct omap_mmc_s *s, int enable);
 
 /* omap_i2c.c */
-i2c_bus *omap_i2c_bus(DeviceState *omap_i2c);
+I2CBus *omap_i2c_bus(DeviceState *omap_i2c);
 
 # define cpu_is_omap310(cpu)		(cpu->mpu_model == omap310)
 # define cpu_is_omap1510(cpu)		(cpu->mpu_model == omap1510)
diff --git a/include/hw/arm/pxa.h b/include/hw/arm/pxa.h
index 7ca330a61f8992146f60291f3af2bfbbd2864cc4..c5079067bb47a1aff209ec7f689da0397afe4334 100644
--- a/include/hw/arm/pxa.h
+++ b/include/hw/arm/pxa.h
@@ -116,7 +116,7 @@ void pxa27x_register_keypad(PXA2xxKeyPadState *kp,
 typedef struct PXA2xxI2CState PXA2xxI2CState;
 PXA2xxI2CState *pxa2xx_i2c_init(hwaddr base,
                 qemu_irq irq, uint32_t page_size);
-i2c_bus *pxa2xx_i2c_bus(PXA2xxI2CState *s);
+I2CBus *pxa2xx_i2c_bus(PXA2xxI2CState *s);
 
 typedef struct PXA2xxI2SState PXA2xxI2SState;
 typedef struct PXA2xxFIrState PXA2xxFIrState;
diff --git a/include/hw/i2c/i2c.h b/include/hw/i2c/i2c.h
index 461392f3745c8f27c6567749ba7707a58f659654..9df987bc623bd2f0177fd6300b619c1e6a58560f 100644
--- a/include/hw/i2c/i2c.h
+++ b/include/hw/i2c/i2c.h
@@ -50,18 +50,18 @@ struct I2CSlave
     uint8_t address;
 };
 
-i2c_bus *i2c_init_bus(DeviceState *parent, const char *name);
+I2CBus *i2c_init_bus(DeviceState *parent, const char *name);
 void i2c_set_slave_address(I2CSlave *dev, uint8_t address);
-int i2c_bus_busy(i2c_bus *bus);
-int i2c_start_transfer(i2c_bus *bus, uint8_t address, int recv);
-void i2c_end_transfer(i2c_bus *bus);
-void i2c_nack(i2c_bus *bus);
-int i2c_send(i2c_bus *bus, uint8_t data);
-int i2c_recv(i2c_bus *bus);
+int i2c_bus_busy(I2CBus *bus);
+int i2c_start_transfer(I2CBus *bus, uint8_t address, int recv);
+void i2c_end_transfer(I2CBus *bus);
+void i2c_nack(I2CBus *bus);
+int i2c_send(I2CBus *bus, uint8_t data);
+int i2c_recv(I2CBus *bus);
 
 #define FROM_I2C_SLAVE(type, dev) DO_UPCAST(type, i2c, dev)
 
-DeviceState *i2c_create_slave(i2c_bus *bus, const char *name, uint8_t addr);
+DeviceState *i2c_create_slave(I2CBus *bus, const char *name, uint8_t addr);
 
 /* wm8750.c */
 void wm8750_data_req_set(DeviceState *dev,
diff --git a/include/hw/i2c/pm_smbus.h b/include/hw/i2c/pm_smbus.h
index e3069bf7d4eed6e02a18f983e1509b496e05cb5f..926603fdff2930c405af0d0a2e51f3f9593fdf7b 100644
--- a/include/hw/i2c/pm_smbus.h
+++ b/include/hw/i2c/pm_smbus.h
@@ -2,7 +2,7 @@
 #define PM_SMBUS_H
 
 typedef struct PMSMBus {
-    i2c_bus *smbus;
+    I2CBus *smbus;
     MemoryRegion io;
 
     uint8_t smb_stat;
diff --git a/include/hw/i2c/smbus.h b/include/hw/i2c/smbus.h
index d764d759c47860bd7b9fe877bfb806bc72cc8eca..63f0cc4788b613a491c809077b96d28606df9bfb 100644
--- a/include/hw/i2c/smbus.h
+++ b/include/hw/i2c/smbus.h
@@ -66,18 +66,18 @@ struct SMBusDevice {
 };
 
 /* Master device commands.  */
-void smbus_quick_command(i2c_bus *bus, uint8_t addr, int read);
-uint8_t smbus_receive_byte(i2c_bus *bus, uint8_t addr);
-void smbus_send_byte(i2c_bus *bus, uint8_t addr, uint8_t data);
-uint8_t smbus_read_byte(i2c_bus *bus, uint8_t addr, uint8_t command);
-void smbus_write_byte(i2c_bus *bus, uint8_t addr, uint8_t command, uint8_t data);
-uint16_t smbus_read_word(i2c_bus *bus, uint8_t addr, uint8_t command);
-void smbus_write_word(i2c_bus *bus, uint8_t addr, uint8_t command, uint16_t data);
-int smbus_read_block(i2c_bus *bus, uint8_t addr, uint8_t command, uint8_t *data);
-void smbus_write_block(i2c_bus *bus, uint8_t addr, uint8_t command, uint8_t *data,
+void smbus_quick_command(I2CBus *bus, uint8_t addr, int read);
+uint8_t smbus_receive_byte(I2CBus *bus, uint8_t addr);
+void smbus_send_byte(I2CBus *bus, uint8_t addr, uint8_t data);
+uint8_t smbus_read_byte(I2CBus *bus, uint8_t addr, uint8_t command);
+void smbus_write_byte(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t data);
+uint16_t smbus_read_word(I2CBus *bus, uint8_t addr, uint8_t command);
+void smbus_write_word(I2CBus *bus, uint8_t addr, uint8_t command, uint16_t data);
+int smbus_read_block(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t *data);
+void smbus_write_block(I2CBus *bus, uint8_t addr, uint8_t command, uint8_t *data,
                        int len);
 
-void smbus_eeprom_init(i2c_bus *smbus, int nb_eeprom,
+void smbus_eeprom_init(I2CBus *smbus, int nb_eeprom,
                        const uint8_t *eeprom_spd, int size);
 
 #endif
diff --git a/include/hw/i386/ich9.h b/include/hw/i386/ich9.h
index 4a68b359a6c9150dc7ebc9a3c67b28a318eba426..9e4a0e4b8d326624f9ef2da845b176986e0860d4 100644
--- a/include/hw/i386/ich9.h
+++ b/include/hw/i386/ich9.h
@@ -20,7 +20,7 @@ int ich9_lpc_map_irq(PCIDevice *pci_dev, int intx);
 PCIINTxRoute ich9_route_intx_pin_to_irq(void *opaque, int pirq_pin);
 void ich9_lpc_pm_init(PCIDevice *pci_lpc);
 PCIBus *ich9_d2pbr_init(PCIBus *bus, int devfn, int sec_bus);
-i2c_bus *ich9_smb_init(PCIBus *bus, int devfn, uint32_t smb_io_base);
+I2CBus *ich9_smb_init(PCIBus *bus, int devfn, uint32_t smb_io_base);
 
 #define ICH9_CC_SIZE                            (16 * 1024)     /* 16KB */
 
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 3e1e81b27bb143cb0fea2c66be4a18514181d008..9010246cb80d6ff90ae023216bb702468a949bc7 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -165,9 +165,9 @@ void ioapic_init_gsi(GSIState *gsi_state, const char *parent_name);
 
 /* acpi_piix.c */
 
-i2c_bus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
-                       qemu_irq sci_irq, qemu_irq smi_irq,
-                       int kvm_enabled, FWCfgState *fw_cfg);
+I2CBus *piix4_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
+                      qemu_irq sci_irq, qemu_irq smi_irq,
+                      int kvm_enabled, FWCfgState *fw_cfg);
 void piix4_smbus_register_device(SMBusDevice *dev, uint8_t addr);
 
 /* hpet.c */
diff --git a/include/hw/isa/vt82c686.h b/include/hw/isa/vt82c686.h
index 6ef876d2602ff863185c5a57ebf9c199011865cb..471b5e9e535d7c240bfe68ccd4384b1d2965da11 100644
--- a/include/hw/isa/vt82c686.h
+++ b/include/hw/isa/vt82c686.h
@@ -5,7 +5,7 @@
 ISABus *vt82c686b_init(PCIBus * bus, int devfn);
 void vt82c686b_ac97_init(PCIBus *bus, int devfn);
 void vt82c686b_mc97_init(PCIBus *bus, int devfn);
-i2c_bus *vt82c686b_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
-            qemu_irq sci_irq);
+I2CBus *vt82c686b_pm_init(PCIBus *bus, int devfn, uint32_t smb_io_base,
+                          qemu_irq sci_irq);
 
 #endif
diff --git a/include/qemu/typedefs.h b/include/qemu/typedefs.h
index 5b4e333fc137def1bf604985587bcc115b3e967f..83c9b1675d3575fc6b3136a65153c9505679dd2c 100644
--- a/include/qemu/typedefs.h
+++ b/include/qemu/typedefs.h
@@ -43,7 +43,7 @@ typedef struct QemuConsole QemuConsole;
 typedef struct CharDriverState CharDriverState;
 typedef struct MACAddr MACAddr;
 typedef struct NetClientState NetClientState;
-typedef struct i2c_bus i2c_bus;
+typedef struct I2CBus I2CBus;
 typedef struct ISABus ISABus;
 typedef struct ISADevice ISADevice;
 typedef struct SMBusDevice SMBusDevice;