Add gpios in/out init for aspeed gpio to add the ability to connect
to other gpio devices.
Based the qdev-core.h comments, If you want to connect a GPIO to other
devices, you need to call qdev_init_gpio_in() or qdev_init_gpio_out().
```
For input gpios:
*
* Outbound GPIO lines can be connected to any qemu_irq, but the common
* case is connecting them to another device's inbound GPIO line, using
* the qemu_irq returned by qdev_get_gpio_in() or qdev_get_gpio_in_named().
For output gpios:
* This function is intended to be used by board code or SoC "container"
* device models to wire up the GPIO lines; usually the return value
* will be passed to qdev_connect_gpio_out() or a similar function to
* connect another device's output GPIO line to this input.
```
Signed-off-by: Jian Zhang <zhangjian.3...@bytedance.com>
---
hw/gpio/aspeed_gpio.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/hw/gpio/aspeed_gpio.c b/hw/gpio/aspeed_gpio.c
index e99c4c6329..616ec8db52 100644
--- a/hw/gpio/aspeed_gpio.c
+++ b/hw/gpio/aspeed_gpio.c
@@ -1018,6 +1018,17 @@ static void aspeed_gpio_reset(DeviceState *dev)
memset(s->sets, 0, sizeof(s->sets));
}
+static void aspeed_gpio_set(void *opaque, int line, int new_state)
+{
+ AspeedGPIOState *s = ASPEED_GPIO(opaque);
+ uint32_t set_idx, pin;
+
+ set_idx = line / ASPEED_GPIOS_PER_SET;
+ pin = line % ASPEED_GPIOS_PER_SET;
+
+ aspeed_gpio_set_pin_level(s, set_idx, pin, new_state);
+}
+
static void aspeed_gpio_realize(DeviceState *dev, Error **errp)
{
AspeedGPIOState *s = ASPEED_GPIO(dev);
@@ -1042,6 +1053,12 @@ static void aspeed_gpio_realize(DeviceState *dev, Error
**errp)
memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_gpio_ops, s,
TYPE_ASPEED_GPIO, 0x800);
+ /* TODO: Maybe could in named, not anonymous is better */
+ qdev_init_gpio_out(dev, &s->gpios[0][0],
+ ASPEED_GPIO_MAX_NR_SETS * ASPEED_GPIOS_PER_SET);
+ qdev_init_gpio_in(dev, aspeed_gpio_set,
+ ASPEED_GPIO_MAX_NR_SETS * ASPEED_GPIOS_PER_SET);
+
sysbus_init_mmio(sbd, &s->iomem);
}
--
2.25.1
