Since the named GPIO lines are a "public" interface to the device,
we can directly call qdev_connect_gpio_out_named(), making it
consistent with how the other A20 input source (port92) is wired.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 include/hw/input/i8042.h | 1 -
 hw/i386/pc.c             | 3 ++-
 hw/input/pckbd.c         | 5 -----
 3 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h
index 1d90432daef..1cd53b8d221 100644
--- a/include/hw/input/i8042.h
+++ b/include/hw/input/i8042.h
@@ -21,6 +21,5 @@ void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq,
                    MemoryRegion *region, ram_addr_t size,
                    hwaddr mask);
 void i8042_isa_mouse_fake_event(ISAKBDState *isa);
-void i8042_setup_a20_line(ISADevice *dev, qemu_irq a20_out);
 
 #endif /* HW_INPUT_I8042_H */
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index a2ef40ecbc2..e2f7cd4aec6 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1045,7 +1045,8 @@ static void pc_superio_init(ISABus *isa_bus, bool create_fdctrl, bool no_vmport)
     port92 = isa_create_simple(isa_bus, TYPE_PORT92);
 
     a20_line = qemu_allocate_irqs(handle_a20_line_change, first_cpu, 2);
-    i8042_setup_a20_line(i8042, a20_line[0]);
+    qdev_connect_gpio_out_named(DEVICE(i8042),
+                                I8042_A20_LINE, 0, a20_line[0]);
     qdev_connect_gpio_out_named(DEVICE(port92),
                                 PORT92_A20_LINE, 0, a20_line[1]);
     g_free(a20_line);
diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c
index baba62f357a..7fd4477d742 100644
--- a/hw/input/pckbd.c
+++ b/hw/input/pckbd.c
@@ -680,11 +680,6 @@ void i8042_isa_mouse_fake_event(ISAKBDState *isa)
     ps2_mouse_fake_event(s->mouse);
 }
 
-void i8042_setup_a20_line(ISADevice *dev, qemu_irq a20_out)
-{
-    qdev_connect_gpio_out_named(DEVICE(dev), I8042_A20_LINE, 0, a20_out);
-}
-
 static const VMStateDescription vmstate_kbd_isa = {
     .name = "pckbd",
     .version_id = 3,
-- 
2.33.1

On 2021/12/18 21:04, Philippe Mathieu-Daudé wrote:
> Since the named GPIO lines are a "public" interface to the device,
> we can directly call qdev_connect_gpio_out_named(), making it
> consistent with how the other A20 input source (port92) is wired.
>
> Suggested-by: Peter Maydell <peter.maydell@linaro.org>
> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
> ---
>   include/hw/input/i8042.h | 1 -
>   hw/i386/pc.c             | 3 ++-
>   hw/input/pckbd.c         | 5 -----
>   3 files changed, 2 insertions(+), 7 deletions(-)
Reviewed-by: Yanan Wang <wangyanan55@huawei.com>

Thanks,
Yanan
> diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h
> index 1d90432daef..1cd53b8d221 100644
> --- a/include/hw/input/i8042.h
> +++ b/include/hw/input/i8042.h
> @@ -21,6 +21,5 @@ void i8042_mm_init(qemu_irq kbd_irq, qemu_irq mouse_irq,
>                      MemoryRegion *region, ram_addr_t size,
>                      hwaddr mask);
>   void i8042_isa_mouse_fake_event(ISAKBDState *isa);
> -void i8042_setup_a20_line(ISADevice *dev, qemu_irq a20_out);
>   
>   #endif /* HW_INPUT_I8042_H */
> diff --git a/hw/i386/pc.c b/hw/i386/pc.c
> index a2ef40ecbc2..e2f7cd4aec6 100644
> --- a/hw/i386/pc.c
> +++ b/hw/i386/pc.c
> @@ -1045,7 +1045,8 @@ static void pc_superio_init(ISABus *isa_bus, bool create_fdctrl, bool no_vmport)
>       port92 = isa_create_simple(isa_bus, TYPE_PORT92);
>   
>       a20_line = qemu_allocate_irqs(handle_a20_line_change, first_cpu, 2);
> -    i8042_setup_a20_line(i8042, a20_line[0]);
> +    qdev_connect_gpio_out_named(DEVICE(i8042),
> +                                I8042_A20_LINE, 0, a20_line[0]);
>       qdev_connect_gpio_out_named(DEVICE(port92),
>                                   PORT92_A20_LINE, 0, a20_line[1]);
>       g_free(a20_line);
> diff --git a/hw/input/pckbd.c b/hw/input/pckbd.c
> index baba62f357a..7fd4477d742 100644
> --- a/hw/input/pckbd.c
> +++ b/hw/input/pckbd.c
> @@ -680,11 +680,6 @@ void i8042_isa_mouse_fake_event(ISAKBDState *isa)
>       ps2_mouse_fake_event(s->mouse);
>   }
>   
> -void i8042_setup_a20_line(ISADevice *dev, qemu_irq a20_out)
> -{
> -    qdev_connect_gpio_out_named(DEVICE(dev), I8042_A20_LINE, 0, a20_out);
> -}
> -
>   static const VMStateDescription vmstate_kbd_isa = {
>       .name = "pckbd",
>       .version_id = 3,