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Diffstat (limited to 'hw/omap_i2c.c')
-rw-r--r--hw/omap_i2c.c107
1 files changed, 62 insertions, 45 deletions
diff --git a/hw/omap_i2c.c b/hw/omap_i2c.c
index 5ec422c566..20bc82e3b8 100644
--- a/hw/omap_i2c.c
+++ b/hw/omap_i2c.c
@@ -19,14 +19,20 @@
#include "hw.h"
#include "i2c.h"
#include "omap.h"
+#include "sysbus.h"
-struct omap_i2c_s {
+
+typedef struct OMAPI2CState {
+ SysBusDevice busdev;
MemoryRegion iomem;
qemu_irq irq;
qemu_irq drq[2];
i2c_bus *bus;
uint8_t revision;
+ void *iclk;
+ void *fclk;
+
uint8_t mask;
uint16_t stat;
uint16_t dma;
@@ -40,12 +46,12 @@ struct omap_i2c_s {
uint8_t divider;
uint8_t times[2];
uint16_t test;
-};
+} OMAPI2CState;
#define OMAP2_INTR_REV 0x34
#define OMAP2_GC_REV 0x34
-static void omap_i2c_interrupts_update(struct omap_i2c_s *s)
+static void omap_i2c_interrupts_update(OMAPI2CState *s)
{
qemu_set_irq(s->irq, s->stat & s->mask);
if ((s->dma >> 15) & 1) /* RDMA_EN */
@@ -54,7 +60,7 @@ static void omap_i2c_interrupts_update(struct omap_i2c_s *s)
qemu_set_irq(s->drq[1], (s->stat >> 4) & 1); /* XRDY */
}
-static void omap_i2c_fifo_run(struct omap_i2c_s *s)
+static void omap_i2c_fifo_run(OMAPI2CState *s)
{
int ack = 1;
@@ -122,8 +128,10 @@ static void omap_i2c_fifo_run(struct omap_i2c_s *s)
s->control &= ~(1 << 1); /* STP */
}
-void omap_i2c_reset(struct omap_i2c_s *s)
+static void omap_i2c_reset(DeviceState *dev)
{
+ OMAPI2CState *s = FROM_SYSBUS(OMAPI2CState,
+ sysbus_from_qdev(dev));
s->mask = 0;
s->stat = 0;
s->dma = 0;
@@ -143,7 +151,7 @@ void omap_i2c_reset(struct omap_i2c_s *s)
static uint32_t omap_i2c_read(void *opaque, target_phys_addr_t addr)
{
- struct omap_i2c_s *s = (struct omap_i2c_s *) opaque;
+ OMAPI2CState *s = opaque;
int offset = addr & OMAP_MPUI_REG_MASK;
uint16_t ret;
@@ -243,7 +251,7 @@ static uint32_t omap_i2c_read(void *opaque, target_phys_addr_t addr)
static void omap_i2c_write(void *opaque, target_phys_addr_t addr,
uint32_t value)
{
- struct omap_i2c_s *s = (struct omap_i2c_s *) opaque;
+ OMAPI2CState *s = opaque;
int offset = addr & OMAP_MPUI_REG_MASK;
int nack;
@@ -309,14 +317,14 @@ static void omap_i2c_write(void *opaque, target_phys_addr_t addr,
}
if (value & 2)
- omap_i2c_reset(s);
+ omap_i2c_reset(&s->busdev.qdev);
break;
case 0x24: /* I2C_CON */
s->control = value & 0xcf87;
if (~value & (1 << 15)) { /* I2C_EN */
if (s->revision < OMAP2_INTR_REV)
- omap_i2c_reset(s);
+ omap_i2c_reset(&s->busdev.qdev);
break;
}
if ((value & (1 << 15)) && !(value & (1 << 10))) { /* MST */
@@ -385,7 +393,7 @@ static void omap_i2c_write(void *opaque, target_phys_addr_t addr,
static void omap_i2c_writeb(void *opaque, target_phys_addr_t addr,
uint32_t value)
{
- struct omap_i2c_s *s = (struct omap_i2c_s *) opaque;
+ OMAPI2CState *s = opaque;
int offset = addr & OMAP_MPUI_REG_MASK;
switch (offset) {
@@ -426,50 +434,59 @@ static const MemoryRegionOps omap_i2c_ops = {
.endianness = DEVICE_NATIVE_ENDIAN,
};
-struct omap_i2c_s *omap_i2c_init(MemoryRegion *sysmem,
- target_phys_addr_t base,
- qemu_irq irq,
- qemu_irq *dma,
- omap_clk clk)
+static int omap_i2c_init(SysBusDevice *dev)
{
- struct omap_i2c_s *s = (struct omap_i2c_s *)
- g_malloc0(sizeof(struct omap_i2c_s));
-
- /* TODO: set a value greater or equal to real hardware */
- s->revision = 0x11;
- s->irq = irq;
- s->drq[0] = dma[0];
- s->drq[1] = dma[1];
- s->bus = i2c_init_bus(NULL, "i2c");
- omap_i2c_reset(s);
+ OMAPI2CState *s = FROM_SYSBUS(OMAPI2CState, dev);
- memory_region_init_io(&s->iomem, &omap_i2c_ops, s, "omap.i2c", 0x800);
- memory_region_add_subregion(sysmem, base, &s->iomem);
-
- return s;
+ if (!s->fclk) {
+ hw_error("omap_i2c: fclk not connected\n");
+ }
+ if (s->revision >= OMAP2_INTR_REV && !s->iclk) {
+ /* Note that OMAP1 doesn't have a separate interface clock */
+ hw_error("omap_i2c: iclk not connected\n");
+ }
+ sysbus_init_irq(dev, &s->irq);
+ sysbus_init_irq(dev, &s->drq[0]);
+ sysbus_init_irq(dev, &s->drq[1]);
+ memory_region_init_io(&s->iomem, &omap_i2c_ops, s, "omap.i2c",
+ (s->revision < OMAP2_INTR_REV) ? 0x800 : 0x1000);
+ sysbus_init_mmio(dev, &s->iomem);
+ s->bus = i2c_init_bus(&dev->qdev, NULL);
+ return 0;
}
-struct omap_i2c_s *omap2_i2c_init(struct omap_target_agent_s *ta,
- qemu_irq irq, qemu_irq *dma, omap_clk fclk, omap_clk iclk)
-{
- struct omap_i2c_s *s = (struct omap_i2c_s *)
- g_malloc0(sizeof(struct omap_i2c_s));
+static Property omap_i2c_properties[] = {
+ DEFINE_PROP_UINT8("revision", OMAPI2CState, revision, 0),
+ DEFINE_PROP_PTR("iclk", OMAPI2CState, iclk),
+ DEFINE_PROP_PTR("fclk", OMAPI2CState, fclk),
+ DEFINE_PROP_END_OF_LIST(),
+};
- s->revision = 0x34;
- s->irq = irq;
- s->drq[0] = dma[0];
- s->drq[1] = dma[1];
- s->bus = i2c_init_bus(NULL, "i2c");
- omap_i2c_reset(s);
+static void omap_i2c_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
+ k->init = omap_i2c_init;
+ dc->props = omap_i2c_properties;
+ dc->reset = omap_i2c_reset;
+}
- memory_region_init_io(&s->iomem, &omap_i2c_ops, s, "omap2.i2c",
- omap_l4_region_size(ta, 0));
- omap_l4_attach(ta, 0, &s->iomem);
+static TypeInfo omap_i2c_info = {
+ .name = "omap_i2c",
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_size = sizeof(OMAPI2CState),
+ .class_init = omap_i2c_class_init,
+};
- return s;
+static void omap_i2c_register_types(void)
+{
+ type_register_static(&omap_i2c_info);
}
-i2c_bus *omap_i2c_bus(struct omap_i2c_s *s)
+i2c_bus *omap_i2c_bus(DeviceState *omap_i2c)
{
+ OMAPI2CState *s = FROM_SYSBUS(OMAPI2CState, sysbus_from_qdev(omap_i2c));
return s->bus;
}
+
+type_init(omap_i2c_register_types)
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-21 09:45:02 +0000