Commit 167790ab authored by Bard Liao's avatar Bard Liao Committed by Vinod Koul
Browse files

soundwire: export sdw_write/read_no_pm functions 



sdw_write_no_pm and sdw_read_no_pm are useful when we want to do IO
without touching PM.

Fixes: 0231453b ('soundwire: bus: add clock stop helpers')
Fixes: 60ee9be2 ('soundwire: bus: add PM/no-PM versions of read/write functions')
Signed-off-by: default avatarBard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20210122070634.12825-5-yung-chuan.liao@linux.intel.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent c30b63ef

drivers/soundwire/bus.c

+4 −3
Original line number Diff line number Diff line
@@ -407,10 +407,11 @@ sdw_nwrite_no_pm(struct sdw_slave *slave, u32 addr, size_t count, u8 *val) 
	return sdw_transfer(slave->bus, &msg);

}



static int sdw_write_no_pm(struct sdw_slave *slave, u32 addr, u8 value)

int sdw_write_no_pm(struct sdw_slave *slave, u32 addr, u8 value)

{

	return sdw_nwrite_no_pm(slave, addr, 1, &value);

}

EXPORT_SYMBOL(sdw_write_no_pm);



static int

sdw_bread_no_pm(struct sdw_bus *bus, u16 dev_num, u32 addr)
@@ -478,8 +479,7 @@ int sdw_bwrite_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr, u8 val 
}

EXPORT_SYMBOL(sdw_bwrite_no_pm_unlocked);



static int

sdw_read_no_pm(struct sdw_slave *slave, u32 addr)

int sdw_read_no_pm(struct sdw_slave *slave, u32 addr)

{

	u8 buf;

	int ret;
@@ -490,6 +490,7 @@ sdw_read_no_pm(struct sdw_slave *slave, u32 addr) 
	else

		return buf;

}

EXPORT_SYMBOL(sdw_read_no_pm);



static int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)

{

include/linux/soundwire/sdw.h

+2 −0
Original line number Diff line number Diff line
@@ -1005,6 +1005,8 @@ int sdw_bus_exit_clk_stop(struct sdw_bus *bus); 


int sdw_read(struct sdw_slave *slave, u32 addr);

int sdw_write(struct sdw_slave *slave, u32 addr, u8 value);

int sdw_write_no_pm(struct sdw_slave *slave, u32 addr, u8 value);

int sdw_read_no_pm(struct sdw_slave *slave, u32 addr);

int sdw_nread(struct sdw_slave *slave, u32 addr, size_t count, u8 *val);

int sdw_nwrite(struct sdw_slave *slave, u32 addr, size_t count, u8 *val);