mmc: core: support HPI send command

HPI command is defined in eMMC4.41.
This feature is important for eMMC4.5 devices.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

3 files changed, 8 insertions, 0 deletions

diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 32492b78aed6..1684d92a8015 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -69,10 +69,14 @@ struct mmc_ext_csd {
         unsigned long long      enhanced_area_offset;   /* Units: Byte */
         unsigned int            enhanced_area_size;     /* Units: KB */
         unsigned int            cache_size;             /* Units: KB */
+        bool                    hpi_en;                 /* HPI enablebit */
+        bool                    hpi;                    /* HPI support bit */
+        unsigned int            hpi_cmd;                /* cmd used as HPI */
         u8                      raw_partition_support;  /* 160 */
         u8                      raw_erased_mem_count;   /* 181 */
         u8                      raw_ext_csd_structure;  /* 194 */
         u8                      raw_card_type;          /* 196 */
+        u8                      out_of_int_time;        /* 198 */
         u8                      raw_s_a_timeout;                /* 217 */
         u8                      raw_hc_erase_gap_size;  /* 221 */
         u8                      raw_erase_timeout_mult; /* 223 */
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index 67bac374d122..174a844a5dda 100644
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -136,6 +136,7 @@ struct mmc_async_req;
 
 extern struct mmc_async_req *mmc_start_req(struct mmc_host *,
                                            struct mmc_async_req *, int *);
+extern int mmc_interrupt_hpi(struct mmc_card *);
 extern void mmc_wait_for_req(struct mmc_host *, struct mmc_request *);
 extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int);
 extern int mmc_app_cmd(struct mmc_host *, struct mmc_card *);
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
index 160e4c5bdae0..0e7135697d11 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -276,6 +276,7 @@ struct _mmc_csd {
 #define EXT_CSD_GP_SIZE_MULT            143     /* R/W */
 #define EXT_CSD_PARTITION_ATTRIBUTE     156     /* R/W */
 #define EXT_CSD_PARTITION_SUPPORT       160     /* RO */
+#define EXT_CSD_HPI_MGMT                161     /* R/W */
 #define EXT_CSD_RST_N_FUNCTION          162     /* R/W */
 #define EXT_CSD_SANITIZE_START          165     /* W */
 #define EXT_CSD_WR_REL_PARAM            166     /* RO */
@@ -288,6 +289,7 @@ struct _mmc_csd {
 #define EXT_CSD_REV                     192     /* RO */
 #define EXT_CSD_STRUCTURE               194     /* RO */
 #define EXT_CSD_CARD_TYPE               196     /* RO */
+#define EXT_CSD_OUT_OF_INTERRUPT_TIME   198     /* RO */
 #define EXT_CSD_PART_SWITCH_TIME        199     /* RO */
 #define EXT_CSD_PWR_CL_52_195           200     /* RO */
 #define EXT_CSD_PWR_CL_26_195           201     /* RO */
@@ -311,6 +313,7 @@ struct _mmc_csd {
 #define EXT_CSD_POWER_OFF_LONG_TIME     247     /* RO */
 #define EXT_CSD_GENERIC_CMD6_TIME       248     /* RO */
 #define EXT_CSD_CACHE_SIZE              249     /* RO, 4 bytes */
+#define EXT_CSD_HPI_FEATURES            503     /* RO */
 
 /*
  * EXT_CSD field definitions