diff mbox series

[v2,53/54] pckbd: add QEMU interface comment for I8042 device

Message ID 20220624134109.881989-54-mark.cave-ayland@ilande.co.uk (mailing list archive)
State New, archived
Headers show
Series PS2 device QOMification - part 1 | expand

Commit Message

Mark Cave-Ayland June 24, 2022, 1:41 p.m. UTC 
This describes the I8042 device interface implemented within QEMU.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
---
 include/hw/input/i8042.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

Comments

Peter Maydell June 24, 2022, 3:12 p.m. UTC | #1 
On Fri, 24 Jun 2022 at 14:54, Mark Cave-Ayland
<mark.cave-ayland@ilande.co.uk> wrote:
>
> This describes the I8042 device interface implemented within QEMU.
>
> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
> ---
>  include/hw/input/i8042.h | 10 ++++++++++
>  1 file changed, 10 insertions(+)
>

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM
diff mbox series

Patch

diff --git a/include/hw/input/i8042.h b/include/hw/input/i8042.h
index d4747b62b8..ca933d8e1b 100644
--- a/include/hw/input/i8042.h
+++ b/include/hw/input/i8042.h
@@ -39,6 +39,16 @@  typedef struct KBDState {
     hwaddr mask;
 } KBDState;
 
+/*
+ * QEMU interface:
+ * + Named GPIO input "ps2-kbd-input-irq": set to 1 if the downstream PS2
+ *   keyboard device has asserted its irq
+ * + Named GPIO input "ps2-mouse-input-irq": set to 1 if the downstream PS2
+ *   mouse device has asserted its irq
+ * + Named GPIO output "a20": A20 line for x86 PCs
+ * + Unnamed GPIO output 0-1: i8042 output irqs for keyboard (0) or mouse (1)
+ */
+
 #define TYPE_I8042 "i8042"
 OBJECT_DECLARE_SIMPLE_TYPE(ISAKBDState, I8042)