diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/devres.c | 78 |
1 files changed, 38 insertions, 40 deletions
diff --git a/lib/devres.c b/lib/devres.c index 5f2aedd..5bec112 100644 --- a/lib/devres.c +++ b/lib/devres.c @@ -5,6 +5,12 @@ #include <linux/gfp.h> #include <linux/export.h> +enum devm_ioremap_type { + DEVM_IOREMAP = 0, + DEVM_IOREMAP_NC, + DEVM_IOREMAP_WC, +}; + void devm_ioremap_release(struct device *dev, void *res) { iounmap(*(void __iomem **)res); @@ -15,24 +21,28 @@ static int devm_ioremap_match(struct device *dev, void *res, void *match_data) return *(void **)res == match_data; } -/** - * devm_ioremap - Managed ioremap() - * @dev: Generic device to remap IO address for - * @offset: Resource address to map - * @size: Size of map - * - * Managed ioremap(). Map is automatically unmapped on driver detach. - */ -void __iomem *devm_ioremap(struct device *dev, resource_size_t offset, - resource_size_t size) +static void __iomem *__devm_ioremap(struct device *dev, resource_size_t offset, + resource_size_t size, + enum devm_ioremap_type type) { - void __iomem **ptr, *addr; + void __iomem **ptr, *addr = NULL; ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL); if (!ptr) return NULL; - addr = ioremap(offset, size); + switch (type) { + case DEVM_IOREMAP: + addr = ioremap(offset, size); + break; + case DEVM_IOREMAP_NC: + addr = ioremap_nocache(offset, size); + break; + case DEVM_IOREMAP_WC: + addr = ioremap_wc(offset, size); + break; + } + if (addr) { *ptr = addr; devres_add(dev, ptr); @@ -41,6 +51,20 @@ void __iomem *devm_ioremap(struct device *dev, resource_size_t offset, return addr; } + +/** + * devm_ioremap - Managed ioremap() + * @dev: Generic device to remap IO address for + * @offset: Resource address to map + * @size: Size of map + * + * Managed ioremap(). Map is automatically unmapped on driver detach. + */ +void __iomem *devm_ioremap(struct device *dev, resource_size_t offset, + resource_size_t size) +{ + return __devm_ioremap(dev, offset, size, DEVM_IOREMAP); +} EXPORT_SYMBOL(devm_ioremap); /** @@ -55,20 +79,7 @@ EXPORT_SYMBOL(devm_ioremap); void __iomem *devm_ioremap_nocache(struct device *dev, resource_size_t offset, resource_size_t size) { - void __iomem **ptr, *addr; - - ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL); - if (!ptr) - return NULL; - - addr = ioremap_nocache(offset, size); - if (addr) { - *ptr = addr; - devres_add(dev, ptr); - } else - devres_free(ptr); - - return addr; + return __devm_ioremap(dev, offset, size, DEVM_IOREMAP_NC); } EXPORT_SYMBOL(devm_ioremap_nocache); @@ -83,20 +94,7 @@ EXPORT_SYMBOL(devm_ioremap_nocache); void __iomem *devm_ioremap_wc(struct device *dev, resource_size_t offset, resource_size_t size) { - void __iomem **ptr, *addr; - - ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL); - if (!ptr) - return NULL; - - addr = ioremap_wc(offset, size); - if (addr) { - *ptr = addr; - devres_add(dev, ptr); - } else - devres_free(ptr); - - return addr; + return __devm_ioremap(dev, offset, size, DEVM_IOREMAP_WC); } EXPORT_SYMBOL(devm_ioremap_wc); |
