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Commit 6e38cf3b authored by Jarkko Nikula's avatar Jarkko Nikula Committed by Wolfram Sang
Browse files

i2c: designware: Let slave adapter support be optional 



Only certain system configurations may use the I2C slave mode so let the
support be optional. This allow reducing module size if needed:

   text    data     bss     dec     hex filename
  10328    1336      16   11680    2da0 drivers/i2c/busses/i2c-designware-core.ko
   7222    1136       8    8366    20ae drivers/i2c/busses/i2c-designware-core.ko

Signed-off-by: default avatarJarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: default avatarLuis Oliveira <lolivei@synopsys.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent 21bf440c

drivers/i2c/busses/Kconfig

+0 −1
Original line number Diff line number Diff line
@@ -483,7 +483,6 @@ config I2C_DESIGNWARE_CORE 
config I2C_DESIGNWARE_PLATFORM

	tristate "Synopsys DesignWare Platform"

	select I2C_DESIGNWARE_CORE

	select I2C_DESIGNWARE_SLAVE

	depends on (ACPI && COMMON_CLK) || !ACPI

	help

	  If you say yes to this option, support will be included for the

drivers/i2c/busses/i2c-designware-core.h

+4 −0
Original line number Diff line number Diff line
@@ -309,7 +309,11 @@ void i2c_dw_disable_int(struct dw_i2c_dev *dev); 


extern u32 i2c_dw_read_comp_param(struct dw_i2c_dev *dev);

extern int i2c_dw_probe(struct dw_i2c_dev *dev);

#if IS_ENABLED(CONFIG_I2C_DESIGNWARE_SLAVE)

extern int i2c_dw_probe_slave(struct dw_i2c_dev *dev);

#else

static inline int i2c_dw_probe_slave(struct dw_i2c_dev *dev) { return -EINVAL; }

#endif



#if IS_ENABLED(CONFIG_I2C_DESIGNWARE_BAYTRAIL)

extern int i2c_dw_probe_lock_support(struct dw_i2c_dev *dev);