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

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

Bug: 231673818
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>
This commit is contained in:
Ram Prakash Gupta
2021-07-02 15:39:21 +05:30
committed by Todd Kjos
parent 2fd2da90cf
commit 8756995a20
5 changed files with 27 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/mmc/core/core.c
View File

@@ -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)
{
@@ -1000,6 +1001,7 @@ 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
@@ -1263,6 +1265,7 @@ 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.

2
drivers/mmc/core/core.h
View File

@@ -42,7 +42,7 @@ 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);

20
drivers/mmc/core/mmc.c
View File

@@ -975,7 +975,7 @@ 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;
@@ -995,7 +995,7 @@ 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,
@@ -1060,11 +1060,12 @@ 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;
@@ -1078,11 +1079,12 @@ 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;
@@ -1151,8 +1153,9 @@ 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;
@@ -1238,6 +1241,7 @@ out_err:
__func__, err);
return err;
}
EXPORT_SYMBOL_GPL(mmc_select_hs400);
int mmc_hs200_to_hs400(struct mmc_card *card)
{
@@ -1523,7 +1527,7 @@ 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;
@@ -1548,12 +1552,13 @@ 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;
@@ -1568,6 +1573,7 @@ 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.

1
drivers/mmc/core/queue.c
View File

@@ -69,6 +69,7 @@ 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)
{

9
include/linux/mmc/mmc.h
View File

@@ -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 */