From 455736df2cfd3a980782986d597132776d630823 Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Fri, 2 Jul 2021 11:40:12 +0100 Subject: [PATCH] hw/gpio/pl061: Document the interface of this device Add a comment documenting the "QEMU interface" of this device: which MMIO regions, IRQ lines, GPIO lines, etc it exposes. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- hw/gpio/pl061.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/hw/gpio/pl061.c b/hw/gpio/pl061.c index 42f6e6c489..a3c1386221 100644 --- a/hw/gpio/pl061.c +++ b/hw/gpio/pl061.c @@ -6,6 +6,13 @@ * Written by Paul Brook * * This code is licensed under the GPL. + * + * QEMU interface: + * + sysbus MMIO region 0: the device registers + * + sysbus IRQ: the GPIOINTR interrupt line + * + unnamed GPIO inputs 0..7: inputs to connect to the emulated GPIO lines + * + unnamed GPIO outputs 0..7: the emulated GPIO lines, considered as + * outputs */ #include "qemu/osdep.h"