Change the way McBSP registers are maintained: store values written to the device in a cache in order to make use of those cached values when convenient. This could help for developing the McBSP context save/restore features, as well as solve the problem of possible register corruption, experienced on OMAP1510 based Amstrad Delta board at least. Series created against linux-omap for-next, commit fb7380d70e041e4b3892f6b19dff7efb609d15a4 (2.6.33-rc3+ dated 2010-01-11). All patches tested on OMAP1510 based Amstrad Delta and compile-tested using omap_3430sdp_defconfig at least. Latest changes: - patch 3: allow for using the mcbsp->free as a guard for cache access, adpot for fixed error handling in omap_mcbsp_request(). - patch 5: dropped - all: refresh against latest l-o for-next tree. Janusz Krzysztofik (4): OMAP: McBSP: Use macros for all register read/write operations OMAP: McBSP: Modify macros/functions API for easy cache access OMAP: McBSP: Introduce caching in register write operations OMAP: McBSP: Use cache when modifying individual register bits arch/arm/mach-omap1/mcbsp.c | 16 - arch/arm/mach-omap2/mcbsp.c | 20 + arch/arm/plat-omap/include/plat/mcbsp.h | 3 arch/arm/plat-omap/mcbsp.c | 480 ++++++++++++++++---------------- 4 files changed, 278 insertions(+), 241 deletions(-) Thanks, Janusz -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
