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| author |   Tuowen Zhao <ztuowen@gmail.com> | 2019-10-16 15:06:28 -0600 |
|---|---|---|
| committer |   Lee Jones <lee.jones@linaro.org> | 2019-11-11 08:40:18 +0000 |
| commit | e537654b7039aacfe8ae629d49655c0e5692ad44 (patch) | |
| tree | 610f9c0aab36b4ce9d7f415fcc01b64367a2ed2c /lib/devres.c | |
| parent | sparc64: implement ioremap_uc (diff) | |
| download | linux-dev-e537654b7039aacfe8ae629d49655c0e5692ad44.tar.xz linux-dev-e537654b7039aacfe8ae629d49655c0e5692ad44.zip | |
lib: devres: add a helper function for ioremap_uc
Implement a resource managed strongly uncachable ioremap function.
Cc: <stable@vger.kernel.org> # v4.19+
Tested-by: AceLan Kao <acelan.kao@canonical.com>
Signed-off-by: Tuowen Zhao <ztuowen@gmail.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'lib/devres.c')
| -rw-r--r-- | lib/devres.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/lib/devres.c b/lib/devres.c index 6a0e9bd6524a..17624d35e82d 100644 --- a/lib/devres.c +++ b/lib/devres.c @@ -9,6 +9,7 @@ enum devm_ioremap_type { DEVM_IOREMAP = 0, DEVM_IOREMAP_NC, + DEVM_IOREMAP_UC, DEVM_IOREMAP_WC, }; @@ -39,6 +40,9 @@ static void __iomem *__devm_ioremap(struct device *dev, resource_size_t offset, case DEVM_IOREMAP_NC: addr = ioremap_nocache(offset, size); break; + case DEVM_IOREMAP_UC: + addr = ioremap_uc(offset, size); + break; case DEVM_IOREMAP_WC: addr = ioremap_wc(offset, size); break; @@ -69,6 +73,21 @@ void __iomem *devm_ioremap(struct device *dev, resource_size_t offset, EXPORT_SYMBOL(devm_ioremap); /** + * devm_ioremap_uc - Managed ioremap_uc() + * @dev: Generic device to remap IO address for + * @offset: Resource address to map + * @size: Size of map + * + * Managed ioremap_uc(). Map is automatically unmapped on driver detach. + */ +void __iomem *devm_ioremap_uc(struct device *dev, resource_size_t offset, + resource_size_t size) +{ + return __devm_ioremap(dev, offset, size, DEVM_IOREMAP_UC); +} +EXPORT_SYMBOL_GPL(devm_ioremap_uc); + +/** * devm_ioremap_nocache - Managed ioremap_nocache() * @dev: Generic device to remap IO address for * @offset: Resource address to map |