FROMLIST: mmc: core: Export core functions required for clk scaling

Export core function required for clk scaling post design change.
This would help make clk scaling part of vendor module.

Bug: 192337957
Link: https://lore.kernel.org/lkml/1571668177-3766-2-git-send-email-
rampraka@codeaurora.org/
Change-Id: I0c5eccb2052197b3a290f7322429cab679c5ade5
Signed-off-by: Nitin Rawat <nitirawa@codeaurora.org>
Signed-off-by: Ram Prakash Gupta <rampraka@codeaurora.org>

drivers/mmc/core/core.c

@@ -917,6 +917,7 @@ void mmc_set_clock(struct mmc_host *host, unsigned int hz)
 	host->ios.clock = hz;
 	mmc_set_ios(host);
 }
+EXPORT_SYMBOL_GPL(mmc_set_clock);
 
 int mmc_execute_tuning(struct mmc_card *card)
 {
@@ -996,6 +997,7 @@ void mmc_set_initial_state(struct mmc_host *host)
 
 	mmc_crypto_set_initial_state(host);
 }
+EXPORT_SYMBOL_GPL(mmc_set_initial_state);
 
 /**
  * mmc_vdd_to_ocrbitnum - Convert a voltage to the OCR bit number
@@ -1259,6 +1261,7 @@ void mmc_set_timing(struct mmc_host *host, unsigned int timing)
 	host->ios.timing = timing;
 	mmc_set_ios(host);
 }
+EXPORT_SYMBOL_GPL(mmc_set_timing);
 
 /*
  * Select appropriate driver type for host.

drivers/mmc/core/core.h

@@ -43,7 +43,7 @@ struct device_node *mmc_of_find_child_device(struct mmc_host *host,
 void mmc_init_erase(struct mmc_card *card);
 
 void mmc_set_chip_select(struct mmc_host *host, int mode);
-void mmc_set_clock(struct mmc_host *host, unsigned int hz);
+extern void mmc_set_clock(struct mmc_host *host, unsigned int hz);
 void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
 void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
 u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);

drivers/mmc/core/mmc.c

@@ -972,7 +972,7 @@ static int mmc_select_powerclass(struct mmc_card *card)
 /*
  * Set the bus speed for the selected speed mode.
  */
-static void mmc_set_bus_speed(struct mmc_card *card)
+void mmc_set_bus_speed(struct mmc_card *card)
 {
 	unsigned int max_dtr = (unsigned int)-1;
 
@@ -992,7 +992,7 @@ static void mmc_set_bus_speed(struct mmc_card *card)
  * If the bus width is changed successfully, return the selected width value.
  * Zero is returned instead of error value if the wide width is not supported.
  */
-static int mmc_select_bus_width(struct mmc_card *card)
+int mmc_select_bus_width(struct mmc_card *card)
 {
 	static unsigned ext_csd_bits[] = {
 		EXT_CSD_BUS_WIDTH_8,
@@ -1057,11 +1057,12 @@ static int mmc_select_bus_width(struct mmc_card *card)
 
 	return err;
 }
+EXPORT_SYMBOL_GPL(mmc_select_bus_width);
 
 /*
  * Switch to the high-speed mode
  */
-static int mmc_select_hs(struct mmc_card *card)
+int mmc_select_hs(struct mmc_card *card)
 {
 	int err;
 
@@ -1075,11 +1076,12 @@ static int mmc_select_hs(struct mmc_card *card)
 
 	return err;
 }
+EXPORT_SYMBOL_GPL(mmc_select_hs);
 
 /*
  * Activate wide bus and DDR if supported.
  */
-static int mmc_select_hs_ddr(struct mmc_card *card)
+int mmc_select_hs_ddr(struct mmc_card *card)
 {
 	struct mmc_host *host = card->host;
 	u32 bus_width, ext_csd_bits;
@@ -1148,8 +1150,9 @@ static int mmc_select_hs_ddr(struct mmc_card *card)
 
 	return err;
 }
+EXPORT_SYMBOL_GPL(mmc_select_hs_ddr);
 
-static int mmc_select_hs400(struct mmc_card *card)
+int mmc_select_hs400(struct mmc_card *card)
 {
 	struct mmc_host *host = card->host;
 	unsigned int max_dtr;
@@ -1235,6 +1238,7 @@ out_err:
 	       __func__, err);
 	return err;
 }
+EXPORT_SYMBOL_GPL(mmc_select_hs400);
 
 int mmc_hs200_to_hs400(struct mmc_card *card)
 {
@@ -1505,7 +1509,7 @@ err:
 /*
  * Activate High Speed, HS200 or HS400ES mode if supported.
  */
-static int mmc_select_timing(struct mmc_card *card)
+int mmc_select_timing(struct mmc_card *card)
 {
 	int err = 0;
 
@@ -1530,12 +1534,13 @@ bus_speed:
 	mmc_set_bus_speed(card);
 	return 0;
 }
+EXPORT_SYMBOL_GPL(mmc_select_timing);
 
 /*
  * Execute tuning sequence to seek the proper bus operating
  * conditions for HS200 and HS400, which sends CMD21 to the device.
  */
-static int mmc_hs200_tuning(struct mmc_card *card)
+int mmc_hs200_tuning(struct mmc_card *card)
 {
 	struct mmc_host *host = card->host;
 
@@ -1550,6 +1555,7 @@ static int mmc_hs200_tuning(struct mmc_card *card)
 
 	return mmc_execute_tuning(card);
 }
+EXPORT_SYMBOL_GPL(mmc_hs200_tuning);
 
 /*
  * Handle the detection and initialisation of a card.

drivers/mmc/core/queue.c

@@ -71,6 +71,7 @@ enum mmc_issue_type mmc_issue_type(struct mmc_queue *mq, struct request *req)
 
 	return MMC_ISSUE_SYNC;
 }
+EXPORT_SYMBOL_GPL(mmc_issue_type);
 
 static void __mmc_cqe_recovery_notifier(struct mmc_queue *mq)
 {

include/linux/mmc/mmc.h

@@ -449,4 +449,13 @@ static inline bool mmc_ready_for_data(u32 status)
 
 #define mmc_driver_type_mask(n)		(1 << (n))
 
+struct mmc_card;
+
+extern int mmc_select_bus_width(struct mmc_card *card);
+extern int mmc_select_hs(struct mmc_card *card);
+extern int mmc_select_hs_ddr(struct mmc_card *card);
+extern int mmc_select_hs400(struct mmc_card *card);
+extern int mmc_hs200_tuning(struct mmc_card *card);
+extern int mmc_select_timing(struct mmc_card *card);
+
 #endif /* LINUX_MMC_MMC_H */