6 files changed, 83 insertions, 1 deletions

diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 403aa505f27e..2ee22e8af110 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -40,6 +40,8 @@ struct mmc_csd {
 };
 
 struct mmc_ext_csd {
+        u8                      rev;
+        unsigned int            sa_timeout;             /* Units: 100ns */
         unsigned int            hs_max_dtr;
         unsigned int            sectors;
 };
@@ -62,7 +64,8 @@ struct sdio_cccr {
                                 low_speed:1,
                                 wide_bus:1,
                                 high_power:1,
-                                high_speed:1;
+                                high_speed:1,
+                                disable_cd:1;
 };
 
 struct sdio_cis {
@@ -94,6 +97,8 @@ struct mmc_card {
 #define MMC_STATE_READONLY      (1<<1)          /* card is read-only */
 #define MMC_STATE_HIGHSPEED     (1<<2)          /* card is in high speed mode */
 #define MMC_STATE_BLOCKADDR     (1<<3)          /* card uses block-addressing */
+        unsigned int            quirks;         /* card quirks */
+#define MMC_QUIRK_LENIENT_FN0   (1<<0)          /* allow SDIO FN0 writes outside of the VS CCCR range */
 
         u32                     raw_cid[4];     /* raw card CID */
         u32                     raw_csd[4];     /* raw card CSD */
@@ -129,6 +134,11 @@ struct mmc_card {
 #define mmc_card_set_highspeed(c) ((c)->state |= MMC_STATE_HIGHSPEED)
 #define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
 
+static inline int mmc_card_lenient_fn0(const struct mmc_card *c)
+{
+        return c->quirks & MMC_QUIRK_LENIENT_FN0;
+}
+
 #define mmc_card_name(c)        ((c)->cid.prod_name)
 #define mmc_card_id(c)          (dev_name(&(c)->dev))
 
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index 7ac8b500d55c..e4898e9eeb59 100644
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -139,6 +139,7 @@ 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 int mmc_try_claim_host(struct mmc_host *host);
 
 /**
  *      mmc_claim_host - exclusively claim a host
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 3e7615e9087e..eaf36364b7d4 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -11,6 +11,7 @@
 #define LINUX_MMC_HOST_H
 
 #include <linux/leds.h>
+#include <linux/sched.h>
 
 #include <linux/mmc/core.h>
 
@@ -51,6 +52,35 @@ 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.
+         */
+        int (*enable)(struct mmc_host *host);
+        int (*disable)(struct mmc_host *host, int lazy);
         void    (*request)(struct mmc_host *host, struct mmc_request *req);
         /*
          * Avoid calling these three functions too often or in a "fast path",
@@ -118,6 +148,9 @@ 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 */
 
         /* host specific block data */
         unsigned int            max_seg_size;   /* see blk_queue_max_segment_size */
@@ -142,9 +175,18 @@ struct mmc_host {
         unsigned int            removed:1;      /* host is being removed */
 #endif
 
+        /* Only used with MMC_CAP_DISABLE */
+        int                     enabled;        /* host is enabled */
+        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 */
 
         wait_queue_head_t       wq;
+        struct task_struct      *claimer;       /* task that has host claimed */
+        int                     claim_cnt;      /* "claim" nesting count */
 
         struct delayed_work     detect;
 
@@ -183,6 +225,9 @@ static inline void *mmc_priv(struct mmc_host *host)
 extern int mmc_suspend_host(struct mmc_host *, pm_message_t);
 extern int mmc_resume_host(struct mmc_host *);
 
+extern void mmc_power_save_host(struct mmc_host *host);
+extern void mmc_power_restore_host(struct mmc_host *host);
+
 extern void mmc_detect_change(struct mmc_host *, unsigned long delay);
 extern void mmc_request_done(struct mmc_host *, struct mmc_request *);
 
@@ -197,5 +242,19 @@ struct regulator;
 int mmc_regulator_get_ocrmask(struct regulator *supply);
 int mmc_regulator_set_ocr(struct regulator *supply, unsigned short vdd_bit);
 
+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);
+
+static inline void mmc_set_disable_delay(struct mmc_host *host,
+                                         unsigned int disable_delay)
+{
+        host->disable_delay = disable_delay;
+}
+
 #endif
 
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
index 14b81f3e5232..c02c8db73701 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -31,6 +31,7 @@
 #define MMC_ALL_SEND_CID          2   /* bcr                     R2  */
 #define MMC_SET_RELATIVE_ADDR     3   /* ac   [31:16] RCA        R1  */
 #define MMC_SET_DSR               4   /* bc   [31:16] RCA            */
+#define MMC_SLEEP_AWAKE           5   /* ac   [31:16] RCA 15:flg R1b */
 #define MMC_SWITCH                6   /* ac   [31:0] See below   R1b */
 #define MMC_SELECT_CARD           7   /* ac   [31:16] RCA        R1  */
 #define MMC_SEND_EXT_CSD          8   /* adtc                    R1  */
@@ -127,6 +128,7 @@
 #define R1_STATUS(x)            (x & 0xFFFFE000)
 #define R1_CURRENT_STATE(x)     ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
 #define R1_READY_FOR_DATA       (1 << 8)        /* sx, a */
+#define R1_SWITCH_ERROR         (1 << 7)        /* sx, c */
 #define R1_APP_CMD              (1 << 5)        /* sr, c */
 
 /*
@@ -254,6 +256,7 @@ struct _mmc_csd {
 #define EXT_CSD_CARD_TYPE       196     /* RO */
 #define EXT_CSD_REV             192     /* RO */
 #define EXT_CSD_SEC_CNT         212     /* RO, 4 bytes */
+#define EXT_CSD_S_A_TIMEOUT     217
 
 /*
  * EXT_CSD field definitions
diff --git a/include/linux/mmc/sdio_func.h b/include/linux/mmc/sdio_func.h
index 451bdfc85830..ac3ab683fec6 100644
--- a/include/linux/mmc/sdio_func.h
+++ b/include/linux/mmc/sdio_func.h
@@ -67,6 +67,7 @@ struct sdio_func {
 
 #define sdio_get_drvdata(f)     dev_get_drvdata(&(f)->dev)
 #define sdio_set_drvdata(f,d)   dev_set_drvdata(&(f)->dev, d)
+#define dev_to_sdio_func(d)     container_of(d, struct sdio_func, dev)
 
 /*
  * SDIO function device driver
@@ -81,6 +82,8 @@ struct sdio_driver {
         struct device_driver drv;
 };
 
+#define to_sdio_driver(d)       container_of(d, struct sdio_driver, drv)
+
 /**
  * SDIO_DEVICE - macro used to describe a specific SDIO device
  * @vend: the 16 bit manufacturer code
diff --git a/include/linux/mmc/sdio_ids.h b/include/linux/mmc/sdio_ids.h
index 39751c8cde9c..2dbfb5a05994 100644
--- a/include/linux/mmc/sdio_ids.h
+++ b/include/linux/mmc/sdio_ids.h
@@ -22,6 +22,12 @@
 /*
  * Vendors and devices.  Sort key: vendor first, device next.
  */
+#define SDIO_VENDOR_ID_INTEL                    0x0089
+#define SDIO_DEVICE_ID_INTEL_IWMC3200WIMAX      0x1402
+#define SDIO_DEVICE_ID_INTEL_IWMC3200WIFI       0x1403
+#define SDIO_DEVICE_ID_INTEL_IWMC3200TOP        0x1404
+#define SDIO_DEVICE_ID_INTEL_IWMC3200GPS        0x1405
+#define SDIO_DEVICE_ID_INTEL_IWMC3200BT         0x1406
 
 #define SDIO_VENDOR_ID_MARVELL                  0x02df
 #define SDIO_DEVICE_ID_MARVELL_LIBERTAS         0x9103