diff options
| author | Venkat Gopalakrishnan <venkatg@codeaurora.org> | 2015-05-29 17:25:46 -0700 |
|---|---|---|
| committer | Subhash Jadavani <subhashj@codeaurora.org> | 2016-05-31 15:26:28 -0700 |
| commit | c811ac59932ffbe91526e2eaa3cb02bc200bdac5 (patch) | |
| tree | e549135fb472c549c02577a2b6955d55f103a4f0 /include/linux | |
| parent | 89ada7fc6d8bc5cc9b198f84517003d5886a1c30 (diff) | |
mmc: cmdq: support for command queue enabled host
This patch adds CMDQ support for command-queue compatible
hosts.
Command queue is added in eMMC-5.1 specification. This
enables the controller to process upto 32 requests at
a time.
Change-Id: I0486495ef57c64bf8427e917daeb184c69b8dc73
Signed-off-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>
Signed-off-by: Konstantin Dorfman <kdorfman@codeaurora.org>
Signed-off-by: Venkat Gopalakrishnan <venkatg@codeaurora.org>
[subhashj@codeaurora.org: fixed trivial merge conflicts]
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mmc/host.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 8968fa6d1eb1..2159303f111f 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -540,6 +540,13 @@ struct mmc_host { enum dev_state dev_status; bool wakeup_on_idle; struct mmc_cmdq_context_info cmdq_ctx; + /* + * several cmdq supporting host controllers are extensions + * of legacy controllers. This variable can be used to store + * a reference to the cmdq extension of the existing host + * controller. + */ + void *cmdq_private; unsigned long private[0] ____cacheline_aligned; }; @@ -563,6 +570,11 @@ static inline void *mmc_priv(struct mmc_host *host) return (void *)host->private; } +static inline void *mmc_cmdq_private(struct mmc_host *host) +{ + return host->cmdq_private; +} + #define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI) #define mmc_dev(x) ((x)->parent) |