X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Flinux%2Fmmc%2Fhost.h;h=ec55e25115d191afe5d89ea6cac5b4002e28a197;hb=87145991406facd537f57c9e6bf0809ceddda851;hp=5c479e77817037b308a31792ffb6ed01d9f161aa;hpb=a3a3769fe0527c075d99c4a38b3e58071fbfa8ee;p=firefly-linux-kernel-4.4.55.git

diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 5c479e778170..ec55e25115d1 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -19,6 +19,7 @@
 
 #include <linux/mmc/core.h>
 #include <linux/mmc/card.h>
+#include <linux/mmc/mmc.h>
 #include <linux/mmc/pm.h>
 
 struct mmc_ios {
@@ -133,6 +134,8 @@ struct mmc_host_ops {
 
 	/* Prepare HS400 target operating frequency depending host driver */
 	int	(*prepare_hs400_tuning)(struct mmc_host *host, struct mmc_ios *ios);
+	/* Prepare enhanced strobe depending host driver */
+	int	(*prepare_enhanced_strobe)(struct mmc_host *host, bool enable);
 	int	(*select_drive_strength)(struct mmc_card *card,
 					 unsigned int max_dtr, int host_drv,
 					 int card_drv, int *drv_type);
@@ -290,6 +293,7 @@ struct mmc_host {
 #define MMC_CAP2_HSX00_1_2V	(MMC_CAP2_HS200_1_2V_SDR | MMC_CAP2_HS400_1_2V)
 #define MMC_CAP2_SDIO_IRQ_NOTHREAD (1 << 17)
 #define MMC_CAP2_NO_WRITE_PROTECT (1 << 18)	/* No physical write protect pin, assume that card is always read-write */
+#define MMC_CAP2_HS400_ENHANCED_STROBE (1 << 20) /* Host supports enhanced strobe */
 
 	mmc_pm_flag_t		pm_caps;	/* supported pm features */
 
@@ -492,6 +496,11 @@ static inline int mmc_host_uhs(struct mmc_host *host)
 		 MMC_CAP_UHS_DDR50);
 }
 
+static inline int mmc_host_hs400_enhanced_strobe(struct mmc_host *host)
+{
+	return host->caps2 & MMC_CAP2_HS400_ENHANCED_STROBE;
+}
+
 static inline int mmc_host_packed_wr(struct mmc_host *host)
 {
 	return host->caps2 & MMC_CAP2_PACKED_WR;
@@ -524,6 +533,15 @@ static inline bool mmc_card_hs400(struct mmc_card *card)
 	return card->host->ios.timing == MMC_TIMING_MMC_HS400;
 }
 
+static inline bool mmc_card_hs400es(struct mmc_card *card)
+{
+	if (mmc_card_hs400(card) &&
+	    (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS400ES))
+		return 1;
+
+	return 0;
+}
+
 void mmc_retune_timer_stop(struct mmc_host *host);
 
 static inline void mmc_retune_needed(struct mmc_host *host)