From: Andrei Warkentin <andreiw@motorola.com>
Date: Wed, 6 Apr 2011 21:33:44 +0000 (-0500)
Subject: MMC: Expose mmc_switch to higher drivers.
X-Git-Tag: firefly_0821_release~9833^2~5^2~7
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=6557be14ed402fef6d90dfdb66152be0610b8ccc;p=firefly-linux-kernel-4.4.55.git

MMC: Expose mmc_switch to higher drivers.

Needed for Sandisk workaround (manipulate EXT_CSD).

Change-Id: I7bfe50a1503ac73ae072db718b60c27526521e41
Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
---

diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index 326447c9ede8..b6d75eec4b36 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -387,6 +387,15 @@ int mmc_spi_set_crc(struct mmc_host *host, int use_crc)
 	return err;
 }
 
+/**
+ *	mmc_switch - modify EXT_CSD register
+ *	@card: the MMC card associated with the data transfer
+ *	@set: cmd set values
+ *	@index: EXT_CSD register index
+ *	@value: value to program into EXT_CSD register
+ *
+ *	Modifies the EXT_CSD register for selected card.
+ */
 int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value)
 {
 	int err;
@@ -434,6 +443,8 @@ int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value)
 	return 0;
 }
 
+EXPORT_SYMBOL(mmc_switch);
+
 int mmc_send_status(struct mmc_card *card, u32 *status)
 {
 	int err;
diff --git a/drivers/mmc/core/mmc_ops.h b/drivers/mmc/core/mmc_ops.h
index 653eb8e84178..b1a806fbd396 100644
--- a/drivers/mmc/core/mmc_ops.h
+++ b/drivers/mmc/core/mmc_ops.h
@@ -20,7 +20,6 @@ int mmc_all_send_cid(struct mmc_host *host, u32 *cid);
 int mmc_set_relative_addr(struct mmc_card *card);
 int mmc_send_csd(struct mmc_card *card, u32 *csd);
 int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd);
-int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value);
 int mmc_send_status(struct mmc_card *card, u32 *status);
 int mmc_send_cid(struct mmc_host *host, u32 *cid);
 int mmc_spi_read_ocr(struct mmc_host *host, int highcap, u32 *ocrp);
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
index 7429033acb66..a6cd7c35958a 100644
--- a/include/linux/mmc/core.h
+++ b/include/linux/mmc/core.h
@@ -135,6 +135,7 @@ extern void mmc_wait_for_req(struct mmc_host *, struct mmc_request *);
 extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int);
 extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *,
 	struct mmc_command *, int);
+extern int mmc_switch(struct mmc_card *, u8, u8, u8);
 
 #define MMC_ERASE_ARG		0x00000000
 #define MMC_SECURE_ERASE_ARG	0x80000000