Re: [PATCH] ARM: PL061: Introduce N_GPIOS

[Philippe Mathieu-Daudé]

On 5/19/20 10:51 AM, Geert Uytterhoeven wrote:
> Add a definition for the number of GPIO lines controlled by a PL061
> instance, and use it instead of the hardcoded magic value 8.
>
> Suggested-by: Philippe Mathieu-Daudé <address@hidden>
> Signed-off-by: Geert Uytterhoeven <address@hidden>

Thanks for following up.

Reviewed-by: Philippe Mathieu-Daudé <address@hidden>

> ---
>   hw/gpio/pl061.c | 12 +++++++-----
>   1 file changed, 7 insertions(+), 5 deletions(-)
>
> diff --git a/hw/gpio/pl061.c b/hw/gpio/pl061.c
> index 2a828260bdb0b946..6d3c36bc16cf9e0d 100644
> --- a/hw/gpio/pl061.c
> +++ b/hw/gpio/pl061.c
> @@ -36,6 +36,8 @@ static const uint8_t pl061_id_luminary[12] =
>   #define TYPE_PL061 "pl061"
>   #define PL061(obj) OBJECT_CHECK(PL061State, (obj), TYPE_PL061)
>   
> +#define N_GPIOS 8
> +
>   typedef struct PL061State {
>       SysBusDevice parent_obj;
>   
> @@ -62,7 +64,7 @@ typedef struct PL061State {
>       uint32_t cr;
>       uint32_t amsel;
>       qemu_irq irq;
> -    qemu_irq out[8];
> +    qemu_irq out[N_GPIOS];
>       const unsigned char *id;
>       uint32_t rsvd_start; /* reserved area: [rsvd_start, 0xfcc] */
>   } PL061State;
> @@ -112,7 +114,7 @@ static void pl061_update(PL061State *s)
>       changed = s->old_out_data ^ out;
>       if (changed) {
>           s->old_out_data = out;
> -        for (i = 0; i < 8; i++) {
> +        for (i = 0; i < N_GPIOS; i++) {
>               mask = 1 << i;
>               if (changed & mask) {
>                   DPRINTF("Set output %d = %d\n", i, (out & mask) != 0);
> @@ -125,7 +127,7 @@ static void pl061_update(PL061State *s)
>       changed = (s->old_in_data ^ s->data) & ~s->dir;
>       if (changed) {
>           s->old_in_data = s->data;
> -        for (i = 0; i < 8; i++) {
> +        for (i = 0; i < N_GPIOS; i++) {
>               mask = 1 << i;
>               if (changed & mask) {
>                   DPRINTF("Changed input %d = %d\n", i, (s->data & mask) != 0);
> @@ -364,8 +366,8 @@ static void pl061_init(Object *obj)
>       memory_region_init_io(&s->iomem, obj, &pl061_ops, s, "pl061", 0x1000);
>       sysbus_init_mmio(sbd, &s->iomem);
>       sysbus_init_irq(sbd, &s->irq);
> -    qdev_init_gpio_in(dev, pl061_set_irq, 8);
> -    qdev_init_gpio_out(dev, s->out, 8);
> +    qdev_init_gpio_in(dev, pl061_set_irq, N_GPIOS);
> +    qdev_init_gpio_out(dev, s->out, N_GPIOS);
>   }
>   
>   static void pl061_class_init(ObjectClass *klass, void *data)