On 15 April 2015 at 15:07, Felix Fietkau <[email protected]> wrote: > @@ -235,16 +235,17 @@ int bcma_gpio_init(struct bcma_drv_cc *cc) > } > > /* > - * On MIPS we register GPIO devices (LEDs, buttons) using absolute > GPIO > - * pin numbers. We don't have Device Tree there and we can't really > use > - * relative (per chip) numbers. > - * So let's use predictable base for BCM47XX and "random" for all > other. > + * Register SoC GPIO devices with absolute GPIO pin base. > + * On MIPS, we don't have Device Tree and we can't use relative (per > chip) > + * GPIO numbers. > + * On some ARM devices, user space may want to access some system GPIO > + * pins directly, which is easier to do with a predictable GPIO base. > */ > -#if IS_BUILTIN(CONFIG_BCM47XX) > - chip->base = bus->num * BCMA_GPIO_MAX_PINS; > -#else > - chip->base = -1; > -#endif > + if (IS_BUILTIN(CONFIG_BCM47XX) || > + cc->core->bus->hosttype == BCMA_HOSTTYPE_SOC) > + chip->base = bus->num * BCMA_GPIO_MAX_PINS; > + else > + chip->base = -1;
Is there any chance you will need predictable GPIO numbers of extra bcma buses on ARM? Like accessing GPIO of PCIe card from user space? Then you could prefer IS_BUILTIN(CONFIG_ARCH_BCM_5301X) Anyway, I'm OK with this patch. -- Rafał -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
