On Wed, Dec 18, 2013 at 09:27:29AM -0700, Stephen Warren wrote: > On 12/18/2013 01:02 AM, Mark Zhang wrote: > > On 12/12/2013 03:57 PM, Hiroshi Doyu wrote: > >> Create a header file to define the swgroup IDs used by the IOMMU(SMMU) > >> binding. "swgroup" is a group of H/W clients which a Tegra SoC > >> supports. This unique ID can be used to calculate MC_SMMU_<swgroup > >> name>_ASID_0 register offset and MC_<swgroup name>_HOTRESET_*_0 > >> register bit. This will allow the same header to be used by both > >> device tree files, and drivers implementing this binding, which > >> guarantees that the two stay in sync. This also makes device trees > >> more readable by using names instead of magic numbers. For HOTRESET > >> bit shifting we need another conversion table, which will come later. > > >> diff --git a/include/dt-bindings/memory/tegra-swgroup.h b/include/dt-bindings/memory/tegra-swgroup.h > > >> +#define TEGRA_SWGROUP_MPE 11 /* 0x264 */ > >> +#define TEGRA_SWGROUP_MSENC SWGROUP_MPE > > > > Need to change this to: > > > > #define TEGRA_SWGROUP_MSENC 11 > > > > The reason is that, this makes "TEGRA_SWGROUP_BIT" doesn't work. So if I > > write "TEGRA_SWGROUP_CELLS(MSENC)" in dt, that causes a dt compiling error. > > I guess it's because TEGRA_SWGROUP_BIT needs to expand its argument > twice, which can be done. > > That all said, just defining all the names directly to constants is > probably the most direct fix. Erm... isn't this simply a typo, where: #define TEGRA_SWGROUP_MSENC SWGROUP_MPE should simply be #define TEGRA_SWGROUP_MSENC TEGRA_SWGROUP_MPE ? That certainly works for me. Thierry
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