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. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
