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authorShawn Lin <shawn.lin@rock-chips.com>2016-07-01 15:45:28 +0800
committerUlf Hansson <ulf.hansson@linaro.org>2016-07-25 10:34:47 +0200
commita0c3b68c72a355f5dab33c3ddcd257e5a718de0c (patch)
tree4a571c7a8f641773e4eb18110c1d821c8aa4d476 /include/linux/mmc
parent39f80bcb0eed20e08090f8b6ed10a0709f1ae36d (diff)
downloadop-kernel-dev-a0c3b68c72a355f5dab33c3ddcd257e5a718de0c.zip
op-kernel-dev-a0c3b68c72a355f5dab33c3ddcd257e5a718de0c.tar.gz
mmc: core: Allow hosts to specify non-support for MMC commands
Host drivers which needs to valdiate for non-supported MMC commands and returnn error code for such requests. To improve and simplify the behaviour, let's invent MMC_CAP2_NO_MMC which these host drivers can set to tell the mmc core to skip sending MMC commands during card initialization. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'include/linux/mmc')
-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 c22476d..aa4bfbf 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -310,6 +310,7 @@ struct mmc_host {
#define MMC_CAP2_NO_SDIO (1 << 19) /* Do not send SDIO commands during initialization */
#define MMC_CAP2_HS400_ES (1 << 20) /* Host supports enhanced strobe */
#define MMC_CAP2_NO_SD (1 << 21) /* Do not send SD commands during initialization */
+#define MMC_CAP2_NO_MMC (1 << 22) /* Do not send (e)MMC commands during initialization */
mmc_pm_flag_t pm_caps; /* supported pm features */
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