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soundwire: export sdw_update() and sdw_update_no_pm() 

We currently export sdw_read() and sdw_write() but the sdw_update()
and sdw_update_no_pm() are currently available only to the bus
code. This was missed in an earlier contribution.

Export both functions so that codec drivers can perform
read-modify-write operations without duplicating the code.

Fixes: b04c975e65 ('soundwire: bus: use sdw_update_no_pm when initializing a device')
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Bard Liao <bard.liao@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20210614180815.153711-2-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Pierre-Louis Bossart 2021-06-14 13:08:11 -05:00 committed by Mark Brown
parent fac165f22a
commit d38ebaf2c8
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
3 changed files with 19 additions and 14 deletions
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17
drivers/soundwire/bus.c
View File

@ -492,7 +492,7 @@ int sdw_read_no_pm(struct sdw_slave *slave, u32 addr)
}
EXPORT_SYMBOL(sdw_read_no_pm);
static int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
{
int tmp;
@ -503,6 +503,21 @@ static int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
tmp = (tmp & ~mask) | val;
return sdw_write_no_pm(slave, addr, tmp);
}
EXPORT_SYMBOL(sdw_update_no_pm);
/* Read-Modify-Write Slave register */
int sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
{
int tmp;
tmp = sdw_read(slave, addr);
if (tmp < 0)
return tmp;
tmp = (tmp & ~mask) | val;
return sdw_write(slave, addr, tmp);
}
EXPORT_SYMBOL(sdw_update);
/**
* sdw_nread() - Read "n" contiguous SDW Slave registers

13
drivers/soundwire/bus.h
View File

@ -201,19 +201,6 @@ static inline void sdw_fill_port_params(struct sdw_port_params *params,
params->data_mode = data_mode;
}
/* Read-Modify-Write Slave register */
static inline int sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)
{
int tmp;
tmp = sdw_read(slave, addr);
if (tmp < 0)
return tmp;
tmp = (tmp & ~mask) | val;
return sdw_write(slave, addr, tmp);
}
/* broadcast read/write for tests */
int sdw_bread_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr);
int sdw_bwrite_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr, u8 value);

3
include/linux/soundwire/sdw.h
View File

@ -1041,6 +1041,9 @@ 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);
int sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val);
int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val);
int sdw_compare_devid(struct sdw_slave *slave, struct sdw_slave_id id);
void sdw_extract_slave_id(struct sdw_bus *bus, u64 addr, struct sdw_slave_id *id);