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i2c: designware: Let slave adapter support be optional

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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: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Luis Oliveira <lolivei@synopsys.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Jarkko Nikula 2017-06-28 17:23:29 +03:00 committed by Wolfram Sang
parent 21bf440ce1
commit 6e38cf3b44
2 changed files with 4 additions and 1 deletions
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1
drivers/i2c/busses/Kconfig
View File

@ -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

4
drivers/i2c/busses/i2c-designware-core.h
View File

@ -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);