summaryrefslogtreecommitdiffstats
path: root/include/linux/mmc
diff options
context:
space:
mode:
authorDoug Anderson <dianders@chromium.org>2013-01-11 17:03:50 +0000
committerChris Ball <cjb@laptop.org>2013-02-24 14:36:52 -0500
commita70aaa64da2205d32d1c9362d8f5d4be619cd58f (patch)
treea1744e9c87a2437863c707bb9ec043b5a4cebe5a /include/linux/mmc
parentc148e9ff4bd45f26d3f0253c20efc497672c3c84 (diff)
downloadop-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.h9
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 {
OpenPOWER on IntegriCloud