From: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Date: Wed, 28 Jun 2017 17:23:29 +0300
Subject: i2c: designware: Let slave adapter support be optional
Git-commit: 6e38cf3b442120a84e69faf1ac9a7b4cd79d1ad6
Patch-mainline: v4.13-rc1
References: fate#326530,fate#326531,fate#326535,fate#326538,fate#326539
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>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@suse.com>
---
drivers/i2c/busses/Kconfig | 1 -
drivers/i2c/busses/i2c-designware-core.h | 4 ++++
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index c98c8e51c448..1006b230b236 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -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
diff --git a/drivers/i2c/busses/i2c-designware-core.h b/drivers/i2c/busses/i2c-designware-core.h
index a403dcdfca4b..9fee4c054d3d 100644
--- a/drivers/i2c/busses/i2c-designware-core.h
+++ b/drivers/i2c/busses/i2c-designware-core.h
@@ -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);
--
2.11.0