mmc: Split mmc struct, rework mmc initialization (v2)

The way that struct mmc was implemented was a bit of a mess;
configuration and internal state all jumbled up in a single structure.

On top of that the way initialization is done with mmc_register leads
to a lot of duplicated code in drivers.

Typically the initialization got something like this in every driver.

	struct mmc *mmc = malloc(sizeof(struct mmc));
	memset(mmc, 0, sizeof(struct mmc);
	/* fill in fields of mmc struct */
	/* store private data pointer */
	mmc_register(mmc);

By using the new mmc_create call one just passes an mmc config struct
and an optional private data pointer like this:

	struct mmc = mmc_create(&cfg, priv);

All in tree drivers have been updated to the new form, and expect
mmc_register to go away before long.

Changes since v1:

* Use calloc instead of manually calling memset.
* Mark mmc_register as deprecated.

Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/fsl_esdhc.h b/include/fsl_esdhc.h
index 89bcbd1700..a6e3a5dc9a 100644
--- a/include/fsl_esdhc.h
+++ b/include/fsl_esdhc.h
@@ -13,6 +13,9 @@
 #include <asm/errno.h>
 #include <asm/byteorder.h>
 
+/* needed for the mmc_cfg definition */
+#include <mmc.h>
+
 /* FSL eSDHC-specific constants */
 #define SYSCTL			0x0002e02c
 #define SYSCTL_INITA		0x08000000
@@ -155,6 +158,7 @@ struct fsl_esdhc_cfg {
 	u32	esdhc_base;
 	u32	sdhc_clk;
 	u8	max_bus_width;
+	struct mmc_config cfg;
 };
 
 /* Select the correct accessors depending on endianess */