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| author | Doug Anderson <dianders@chromium.org> | 2013-01-11 17:03:50 +0000 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2013-02-24 14:36:52 -0500 |
| commit | a70aaa64da2205d32d1c9362d8f5d4be619cd58f (patch) | |
| tree | a1744e9c87a2437863c707bb9ec043b5a4cebe5a /include/linux/mmc | |
| parent | c148e9ff4bd45f26d3f0253c20efc497672c3c84 (diff) | |
| download | op-kernel-dev-a70aaa64da2205d32d1c9362d8f5d4be619cd58f.zip op-kernel-dev-a70aaa64da2205d32d1c9362d8f5d4be619cd58f.tar.gz | |
mmc: dw_mmc: Add "disable-wp" device tree property
The "disable-wp" property is used to specify that a given SD card slot
doesn't have a concept of write protect. This eliminates the need for
special case code for SD slots that should never be write protected
(like a micro SD slot or a dev board).
The dw_mmc driver is special in needing to specify "disable-wp"
because the lack of a "wp-gpios" property means to use the special
purpose write protect line. On some other mmc devices the lack of
"wp-gpios" means that write protect should be disabled.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Acked-by: Seungwon Jeon <tgih.jun@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'include/linux/mmc')
| -rw-r--r-- | include/linux/mmc/dw_mmc.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h index 34be4f4..de61de5 100644 --- a/include/linux/mmc/dw_mmc.h +++ b/include/linux/mmc/dw_mmc.h @@ -209,9 +209,18 @@ struct dw_mci_dma_ops { #define DW_MCI_QUIRK_HIGHSPEED BIT(2) /* Unreliable card detection */ #define DW_MCI_QUIRK_BROKEN_CARD_DETECTION BIT(3) + /* Write Protect detection not available */ +/* + * NOTE: DW_MCI_QUIRK_NO_WRITE_PROTECT will be removed in a future + * patch in the series once reference to it is removed. + */ #define DW_MCI_QUIRK_NO_WRITE_PROTECT BIT(4) +/* Slot level quirks */ +/* This slot has no write protect */ +#define DW_MCI_SLOT_QUIRK_NO_WRITE_PROTECT BIT(0) + struct dma_pdata; struct block_settings { |
