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authorUlf Hansson <ulf.hansson@stericsson.com>2011-12-19 16:24:19 +0100
committerChris Ball <cjb@laptop.org>2012-01-11 23:58:48 -0500
commitaa9df4fb2adcc73d36fa41e23059519be770aaa5 (patch)
tree3e076fe70dcdd092a9d44084e09946e2036eefc2 /include/linux/mmc/host.h
parent7efab4f35740c63502e438886cf1e4aa3f3b800f (diff)
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mmc: core: Add option to prevent eMMC sleep command
Host may now use MMC_CAP2_NO_SLEEP_CMD to disable the use of eMMC sleep/awake command. This option can be used when your platform has a buggy kernel crash dump software, which is supposed to store the dump on the eMMC, but is not able to wake up the eMMC from sleep state. In particular, failures have been seen with u-boot; even if it is fixed there, platforms will be slow to update their bootloader binaries. Signed-off-by: Ulf Hansson <ulf.hansson@stericsson.com> Reviewed-by: Hanumath Prasad <hanumath.prasad@stericsson.com> Reviewed-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Acked-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'include/linux/mmc/host.h')
-rw-r--r--include/linux/mmc/host.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 742f0e102e1e..031d865167a2 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -247,6 +247,7 @@ struct mmc_host {
#define MMC_CAP2_CACHE_CTRL (1 << 1) /* Allow cache control */
#define MMC_CAP2_POWEROFF_NOTIFY (1 << 2) /* Notify poweroff supported */
#define MMC_CAP2_NO_MULTI_READ (1 << 3) /* Multiblock reads don't work */
+#define MMC_CAP2_NO_SLEEP_CMD (1 << 4) /* Don't allow sleep command */
mmc_pm_flag_t pm_caps; /* supported pm features */
unsigned int power_notify_type;