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authorPaul Walmsley <paul@pwsan.com>2012-10-21 01:01:13 -0600
committerPaul Walmsley <paul@pwsan.com>2012-10-21 01:01:13 -0600
commit2bb2a5d30abb0dc99d074877bfad2056142c730b (patch)
tree6da1f32009cec6777baa0a474f7c2579cc57a6bc /arch/arm/mach-omap1
parentb5c5353d417580f7a6ac21a0954f1c500a5cc4f5 (diff)
ARM: OMAP2+: PRM: create PRM reset source API for the watchdog timer driver
The OMAP watchdog timer driver needs to determine what caused the SoC to reset for its GETBOOTSTATUS ioctl. So, define a set of standard reset sources across OMAP SoCs. For OMAP2xxx, 3xxx, and 4xxx SoCs, define mappings from the SoC-specific reset source register bits to the standardized reset source IDs. Create SoC-specific PRM functions that read the appropriate per-SoC register and use the mapping to return the standardized reset bits. Register the SoC-specific PRM functions with the common PRM code via prm_register(). Create a function in the common PRM code, prm_read_reset_sources(), that calls the SoC-specific function, registered during boot. This patch does not yet handle some SoCs, such as AM33xx. Those SoCs were not handled by the code this will replace. Signed-off-by: Paul Walmsley <paul@pwsan.com>
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