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| author |   Denis Karpov <ext-denis.2.karpov@nokia.com> | 2009-09-22 16:44:40 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 07:39:34 -0700 |
| commit | 1887bde391a3216789c9a03ac111d5f6ebfb0c00 (patch) | |
| tree | cd37724ad4984f8bf2d469516e5338e0fcdcb721 /arch/arm/plat-omap/include/mach/mmc.h | |
| parent | omap_hsmmc: make use of new enable/disable interface (diff) | |
| download | linux-dev-1887bde391a3216789c9a03ac111d5f6ebfb0c00.tar.xz linux-dev-1887bde391a3216789c9a03ac111d5f6ebfb0c00.zip | |
ARM: OMAP: mmc-twl4030: add context loss counter support
PM dynamic OFF state results in context loss. That is, the host
controller has been powered off at some point, which means the registers
have been reset. The driver must detect when this happens, and restore
the context. This patch adds the means to detect context loss.
Note, the PM side is not yet implemented.
Signed-off-by: Denis Karpov <ext-denis.2.karpov@nokia.com>
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Acked-by: Matt Fleming <matt@console-pimps.org>
Cc: Ian Molton <ian@mnementh.co.uk>
Cc: "Roberto A. Foglietta" <roberto.foglietta@gmail.com>
Cc: Jarkko Lavinen <jarkko.lavinen@nokia.com>
Cc: Denis Karpov <ext-denis.2.karpov@nokia.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Cc: Philip Langdale <philipl@overt.org>
Cc: "Madhusudhan" <madhu.cr@ti.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/arm/plat-omap/include/mach/mmc.h')
| -rw-r--r-- | arch/arm/plat-omap/include/mach/mmc.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/mach/mmc.h b/arch/arm/plat-omap/include/mach/mmc.h index 81d5b36534b3..2f7cf31f9cd6 100644 --- a/arch/arm/plat-omap/include/mach/mmc.h +++ b/arch/arm/plat-omap/include/mach/mmc.h @@ -59,6 +59,9 @@ struct omap_mmc_platform_data { int (*suspend)(struct device *dev, int slot); int (*resume)(struct device *dev, int slot); + /* Return context loss count due to PM states changing */ + int (*get_context_loss_count)(struct device *dev); + u64 dma_mask; struct omap_mmc_slot_data { |