mmc: start removing enable / disable API

Most parts of the enable / disable API are no longer used and
can be removed.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Venkatraman S <svenkatr@ti.com>
Tested-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

2 files changed, 4 insertions, 43 deletions

diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index 87a976cc5654..2bfa589764de 100644
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -175,7 +175,6 @@ extern unsigned int mmc_align_data_size(struct mmc_card *, unsigned int);
 
 extern int __mmc_claim_host(struct mmc_host *host, atomic_t *abort);
 extern void mmc_release_host(struct mmc_host *host);
-extern void mmc_do_release_host(struct mmc_host *host);
 extern int mmc_try_claim_host(struct mmc_host *host);
 
 extern int mmc_flush_cache(struct mmc_card *);
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index d1d3743fde90..e05bd241c676 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -80,34 +80,11 @@ struct mmc_ios {
 
 struct mmc_host_ops {
         /*
-         * Hosts that support power saving can use the 'enable' and 'disable'
-         * methods to exit and enter power saving states. 'enable' is called
-         * when the host is claimed and 'disable' is called (or scheduled with
-         * a delay) when the host is released. The 'disable' is scheduled if
-         * the disable delay set by 'mmc_set_disable_delay()' is non-zero,
-         * otherwise 'disable' is called immediately. 'disable' may be
-         * scheduled repeatedly, to permit ever greater power saving at the
-         * expense of ever greater latency to re-enable. Rescheduling is
-         * determined by the return value of the 'disable' method. A positive
-         * value gives the delay in milliseconds.
-         *
-         * In the case where a host function (like set_ios) may be called
-         * with or without the host claimed, enabling and disabling can be
-         * done directly and will nest correctly. Call 'mmc_host_enable()' and
-         * 'mmc_host_lazy_disable()' for this purpose, but note that these
-         * functions must be paired.
-         *
-         * Alternatively, 'mmc_host_enable()' may be paired with
-         * 'mmc_host_disable()' which calls 'disable' immediately.  In this
-         * case the 'disable' method will be called with 'lazy' set to 0.
-         * This is mainly useful for error paths.
-         *
-         * Because lazy disable may be called from a work queue, the 'disable'
-         * method must claim the host when 'lazy' != 0, which will work
-         * correctly because recursion is detected and handled.
+         * 'enable' is called when the host is claimed and 'disable' is called
+         * when the host is released. 'enable' and 'disable' are deprecated.
          */
         int (*enable)(struct mmc_host *host);
-        int (*disable)(struct mmc_host *host, int lazy);
+        int (*disable)(struct mmc_host *host);
         /*
          * It is optional for the host to implement pre_req and post_req in
          * order to support double buffering of requests (prepare one
@@ -218,7 +195,7 @@ struct mmc_host {
 #define MMC_CAP_SPI             (1 << 4)        /* Talks only SPI protocols */
 #define MMC_CAP_NEEDS_POLL      (1 << 5)        /* Needs polling for card-detection */
 #define MMC_CAP_8_BIT_DATA      (1 << 6)        /* Can the host do 8 bit transfers */
-#define MMC_CAP_DISABLE         (1 << 7)        /* Can the host be disabled */
+
 #define MMC_CAP_NONREMOVABLE    (1 << 8)        /* Nonremovable e.g. eMMC */
 #define MMC_CAP_WAIT_WHILE_BUSY (1 << 9)        /* Waits while card is busy */
 #define MMC_CAP_ERASE           (1 << 10)       /* Allow erase/trim commands */
@@ -301,13 +278,7 @@ struct mmc_host {
         unsigned int            removed:1;      /* host is being removed */
 #endif
 
-        /* Only used with MMC_CAP_DISABLE */
-        int                     enabled;        /* host is enabled */
         int                     rescan_disable; /* disable card detection */
-        int                     nesting_cnt;    /* "enable" nesting count */
-        int                     en_dis_recurs;  /* detect recursion */
-        unsigned int            disable_delay;  /* disable delay in msecs */
-        struct delayed_work     disable;        /* disabling work */
 
         struct mmc_card         *card;          /* device attached to this host */
 
@@ -407,17 +378,8 @@ int mmc_card_awake(struct mmc_host *host);
 int mmc_card_sleep(struct mmc_host *host);
 int mmc_card_can_sleep(struct mmc_host *host);
 
-int mmc_host_enable(struct mmc_host *host);
-int mmc_host_disable(struct mmc_host *host);
-int mmc_host_lazy_disable(struct mmc_host *host);
 int mmc_pm_notify(struct notifier_block *notify_block, unsigned long, void *);
 
-static inline void mmc_set_disable_delay(struct mmc_host *host,
-                                         unsigned int disable_delay)
-{
-        host->disable_delay = disable_delay;
-}
-
 /* Module parameter */
 extern bool mmc_assume_removable;