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/drivers/mmc/arm_pl180_mmci.h b/drivers/mmc/arm_pl180_mmci.h
index 72344498d6..f23bd391ee 100644
--- a/drivers/mmc/arm_pl180_mmci.h
+++ b/drivers/mmc/arm_pl180_mmci.h
@@ -13,6 +13,9 @@
 #ifndef __ARM_PL180_MMCI_H__
 #define __ARM_PL180_MMCI_H__
 
+/* need definition of struct mmc_config */
+#include <mmc.h>
+
 #define COMMAND_REG_DELAY	300
 #define DATA_REG_DELAY		1000
 #define CLK_CHANGE_DELAY	2000
@@ -184,6 +187,7 @@ struct pl180_mmc_host {
 	unsigned int clkdiv_init;
 	unsigned int pwr_init;
 	int version2;
+	struct mmc_config cfg;
 };
 
 int arm_pl180_mmci_init(struct pl180_mmc_host *);