realview: break out versatile i2c controller code
The versatile i2c controller implementation was separated to
its own file called versatile_i2c.c. This is done as a preparation
for adding i2c support to the versatilepb board.
Signed-off-by: Oskar Andero <oskar.andero@gmail.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
diff --git a/hw/realview.c b/hw/realview.c
index cf55204..ecf4701 100644
--- a/hw/realview.c
+++ b/hw/realview.c
@@ -15,91 +15,13 @@
#include "net.h"
#include "sysemu.h"
#include "boards.h"
-#include "bitbang_i2c.h"
+#include "i2c.h"
#include "blockdev.h"
#include "exec-memory.h"
#define SMP_BOOT_ADDR 0xe0000000
#define SMP_BOOTREG_ADDR 0x10000030
-typedef struct {
- SysBusDevice busdev;
- MemoryRegion iomem;
- bitbang_i2c_interface *bitbang;
- int out;
- int in;
-} RealViewI2CState;
-
-static uint64_t realview_i2c_read(void *opaque, target_phys_addr_t offset,
- unsigned size)
-{
- RealViewI2CState *s = (RealViewI2CState *)opaque;
-
- if (offset == 0) {
- return (s->out & 1) | (s->in << 1);
- } else {
- hw_error("realview_i2c_read: Bad offset 0x%x\n", (int)offset);
- return -1;
- }
-}
-
-static void realview_i2c_write(void *opaque, target_phys_addr_t offset,
- uint64_t value, unsigned size)
-{
- RealViewI2CState *s = (RealViewI2CState *)opaque;
-
- switch (offset) {
- case 0:
- s->out |= value & 3;
- break;
- case 4:
- s->out &= ~value;
- break;
- default:
- hw_error("realview_i2c_write: Bad offset 0x%x\n", (int)offset);
- }
- bitbang_i2c_set(s->bitbang, BITBANG_I2C_SCL, (s->out & 1) != 0);
- s->in = bitbang_i2c_set(s->bitbang, BITBANG_I2C_SDA, (s->out & 2) != 0);
-}
-
-static const MemoryRegionOps realview_i2c_ops = {
- .read = realview_i2c_read,
- .write = realview_i2c_write,
- .endianness = DEVICE_NATIVE_ENDIAN,
-};
-
-static int realview_i2c_init(SysBusDevice *dev)
-{
- RealViewI2CState *s = FROM_SYSBUS(RealViewI2CState, dev);
- i2c_bus *bus;
-
- bus = i2c_init_bus(&dev->qdev, "i2c");
- s->bitbang = bitbang_i2c_init(bus);
- memory_region_init_io(&s->iomem, &realview_i2c_ops, s,
- "realview-i2c", 0x1000);
- sysbus_init_mmio(dev, &s->iomem);
- return 0;
-}
-
-static void realview_i2c_class_init(ObjectClass *klass, void *data)
-{
- SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
-
- k->init = realview_i2c_init;
-}
-
-static TypeInfo realview_i2c_info = {
- .name = "realview_i2c",
- .parent = TYPE_SYS_BUS_DEVICE,
- .instance_size = sizeof(RealViewI2CState),
- .class_init = realview_i2c_class_init,
-};
-
-static void realview_register_types(void)
-{
- type_register_static(&realview_i2c_info);
-}
-
/* Board init. */
static struct arm_boot_info realview_binfo = {
@@ -328,7 +250,7 @@
}
}
- dev = sysbus_create_simple("realview_i2c", 0x10002000, NULL);
+ dev = sysbus_create_simple("versatile_i2c", 0x10002000, NULL);
i2c = (i2c_bus *)qdev_get_child_bus(dev, "i2c");
i2c_create_slave(i2c, "ds1338", 0x68);
@@ -492,4 +414,3 @@
}
machine_init(realview_machine_init);
-type_init(realview_register_types)
