BCM2835 has three I2C controllers. All of them share the same interrupt line.
Signed-off-by: Rayhan Faizel <rayhan.fai...@gmail.com>
---
hw/arm/Kconfig | 1 +
hw/arm/bcm2835_peripherals.c | 32 +++++++++++++++++++++++++---
include/hw/arm/bcm2835_peripherals.h | 3 ++-
3 files changed, 32 insertions(+), 4 deletions(-)
diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index 980b14d58d..2b52cec980 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -430,6 +430,7 @@ config RASPI
select SDHCI
select USB_DWC2
select BCM2835_SPI
+ select BCM2835_I2C
config STM32F100_SOC
bool
diff --git a/hw/arm/bcm2835_peripherals.c b/hw/arm/bcm2835_peripherals.c
index d5573fd954..ca692ed9a5 100644
--- a/hw/arm/bcm2835_peripherals.c
+++ b/hw/arm/bcm2835_peripherals.c
@@ -148,6 +148,14 @@ static void bcm2835_peripherals_init(Object *obj)
/* SPI */
object_initialize_child(obj, "bcm2835-spi0", &s->spi[0],
TYPE_BCM2835_SPI);
+
+ /* I2C */
+ object_initialize_child(obj, "bcm2835-i2c0", &s->i2c[0],
+ TYPE_BCM2835_I2C);
+ object_initialize_child(obj, "bcm2835-i2c1", &s->i2c[1],
+ TYPE_BCM2835_I2C);
+ object_initialize_child(obj, "bcm2835-i2c2", &s->i2c[2],
+ TYPE_BCM2835_I2C);
}
static void bcm2835_peripherals_realize(DeviceState *dev, Error **errp)
@@ -418,14 +426,32 @@ static void bcm2835_peripherals_realize(DeviceState *dev,
Error **errp)
BCM2835_IC_GPU_IRQ,
INTERRUPT_SPI));
+ /* I2C */
+ for (n = 0; n < 3; n++) {
+ if (!sysbus_realize(SYS_BUS_DEVICE(&s->i2c[n]), errp)) {
+ return;
+ }
+ }
+
+ memory_region_add_subregion(&s->peri_mr, BSC0_OFFSET,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->i2c[0]), 0));
+ memory_region_add_subregion(&s->peri_mr, BSC1_OFFSET,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->i2c[1]), 0));
+ memory_region_add_subregion(&s->peri_mr, BSC2_OFFSET,
+ sysbus_mmio_get_region(SYS_BUS_DEVICE(&s->i2c[2]), 0));
+
+ for (n = 0; n < 3; n++) {
+ sysbus_connect_irq(SYS_BUS_DEVICE(&s->i2c[n]), 0,
+ qdev_get_gpio_in_named(DEVICE(&s->ic),
+ BCM2835_IC_GPU_IRQ,
+ INTERRUPT_I2C));
+ }
+
create_unimp(s, &s->txp, "bcm2835-txp", TXP_OFFSET, 0x1000);
create_unimp(s, &s->armtmr, "bcm2835-sp804", ARMCTRL_TIMER0_1_OFFSET,
0x40);
create_unimp(s, &s->i2s, "bcm2835-i2s", I2S_OFFSET, 0x100);
create_unimp(s, &s->smi, "bcm2835-smi", SMI_OFFSET, 0x100);
create_unimp(s, &s->bscsl, "bcm2835-spis", BSC_SL_OFFSET, 0x100);
- create_unimp(s, &s->i2c[0], "bcm2835-i2c0", BSC0_OFFSET, 0x20);
- create_unimp(s, &s->i2c[1], "bcm2835-i2c1", BSC1_OFFSET, 0x20);
- create_unimp(s, &s->i2c[2], "bcm2835-i2c2", BSC2_OFFSET, 0x20);
create_unimp(s, &s->otp, "bcm2835-otp", OTP_OFFSET, 0x80);
create_unimp(s, &s->dbus, "bcm2835-dbus", DBUS_OFFSET, 0x8000);
create_unimp(s, &s->ave0, "bcm2835-ave0", AVE0_OFFSET, 0x8000);
diff --git a/include/hw/arm/bcm2835_peripherals.h
b/include/hw/arm/bcm2835_peripherals.h
index 0203bb79d8..9e8984b444 100644
--- a/include/hw/arm/bcm2835_peripherals.h
+++ b/include/hw/arm/bcm2835_peripherals.h
@@ -32,6 +32,7 @@
#include "hw/timer/bcm2835_systmr.h"
#include "hw/usb/hcd-dwc2.h"
#include "hw/ssi/bcm2835_spi.h"
+#include "hw/i2c/bcm2835_i2c.h"
#include "hw/misc/unimp.h"
#include "qom/object.h"
@@ -68,7 +69,7 @@ struct BCM2835PeripheralState {
Bcm2835ThermalState thermal;
UnimplementedDeviceState i2s;
BCM2835SPIState spi[1];
- UnimplementedDeviceState i2c[3];
+ BCM2835I2CState i2c[3];
UnimplementedDeviceState otp;
UnimplementedDeviceState dbus;
UnimplementedDeviceState ave0;
--
2.34.1
