mmc: add packed command feature of eMMC4.5
This patch adds packed command feature of eMMC4.5.
The maximum number for packing read(or write) is offered
and exception event relevant to packed command which is
used for error handling is enabled. If host wants to use
this feature, MMC_CAP2_PACKED_CMD should be set.
(cherry picked from commit c70e9669bffa2f2ffe4d8f9768980e1cd08df4b2)
Change-Id: If3af1299c7dbdc9f66b13ec5b99038225d5b17f0
Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Reviewed-by: Maya Erez <merez@codeaurora.org>
Reviewed-by: Subhash Jadavani <subhashj@codeaurora.org>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org>
(cherry picked from commit 458c9b55dd3e06d6cd36158bd96a6d4935ed4fea)
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index dcdcd58..714cc76 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -241,6 +241,10 @@
#define MMC_CAP2_BROKEN_VOLTAGE (1 << 7) /* Use the broken voltage */
#define MMC_CAP2_DETECT_ON_ERR (1 << 8) /* On I/O err check card removal */
#define MMC_CAP2_HC_ERASE_SZ (1 << 9) /* High-capacity erase size */
+#define MMC_CAP2_PACKED_RD (1 << 10) /* Allow packed read */
+#define MMC_CAP2_PACKED_WR (1 << 11) /* Allow packed write */
+#define MMC_CAP2_PACKED_CMD (MMC_CAP2_PACKED_RD | \
+ MMC_CAP2_PACKED_WR) /* Allow packed commands */
#define MMC_CAP2_SANITIZE (1 << 13) /* Support Sanitize */
#define MMC_CAP2_INIT_BKOPS (1 << 15) /* Need to set BKOPS_EN */
#define MMC_CAP2_POWER_OFF_VCCQ_DURING_SUSPEND (1 << 16)