X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=blobdiff_plain;f=include%2Fmmc.h;h=f88f672f111fee172e655167b0284e5b7521774d;hp=21d0937d5c92b6b57020636db0057371906314f2;hb=69f14dc2fd64307f012381dd333a06001dec75dc;hpb=ed7bdc03eb516fb698ccc12ec5b4b9f132d05c5f;ds=sidebyside

diff --git a/include/mmc.h b/include/mmc.h
index 21d0937d5c..f88f672f11 100644
--- a/include/mmc.h
+++ b/include/mmc.h
@@ -68,6 +68,7 @@
 #define UNUSABLE_ERR		-17 /* Unusable Card */
 #define COMM_ERR		-18 /* Communications Error */
 #define TIMEOUT			-19
+#define IN_PROGRESS		-20 /* operation is in progress */
 
 #define MMC_CMD_GO_IDLE_STATE		0
 #define MMC_CMD_SEND_OP_COND		1
@@ -291,6 +292,10 @@ struct mmc {
 	int (*getcd)(struct mmc *mmc);
 	int (*getwp)(struct mmc *mmc);
 	uint b_max;
+	char op_cond_pending;	/* 1 if we are waiting on an op_cond command */
+	char init_in_progress;	/* 1 if we have done mmc_start_init() */
+	char preinit;		/* start init as early as possible */
+	uint op_cond_response;	/* the response byte from the last op_cond */
 };
 
 int mmc_register(struct mmc *mmc);
@@ -313,6 +318,31 @@ int mmc_boot_partition_size_change(struct mmc *mmc, unsigned long bootsize,
 /* Function to send commands to open/close the specified boot partition */
 int mmc_boot_part_access(struct mmc *mmc, u8 ack, u8 part_num, u8 access);
 
+/**
+ * Start device initialization and return immediately; it does not block on
+ * polling OCR (operation condition register) status.  Then you should call
+ * mmc_init, which would block on polling OCR status and complete the device
+ * initializatin.
+ *
+ * @param mmc	Pointer to a MMC device struct
+ * @return 0 on success, IN_PROGRESS on waiting for OCR status, <0 on error.
+ */
+int mmc_start_init(struct mmc *mmc);
+
+/**
+ * Set preinit flag of mmc device.
+ *
+ * This will cause the device to be pre-inited during mmc_initialize(),
+ * which may save boot time if the device is not accessed until later.
+ * Some eMMC devices take 200-300ms to init, but unfortunately they
+ * must be sent a series of commands to even get them to start preparing
+ * for operation.
+ *
+ * @param mmc		Pointer to a MMC device struct
+ * @param preinit	preinit flag value
+ */
+void mmc_set_preinit(struct mmc *mmc, int preinit);
+
 #ifdef CONFIG_GENERIC_MMC
 #define mmc_host_is_spi(mmc)	((mmc)->host_caps & MMC_MODE_SPI)
 struct mmc *mmc_spi_init(uint bus, uint cs, uint speed, uint mode);