mfd: sec-core: Allow building as module

The main MFD driver for Samsung PMICs (S2MPSXX, S5M876X) used with
Exynos SoCs can be compiled and used as a module.  The dependent clock,
regulator and RTC drivers already can be built as a module.

Building entire set of drivers as modules might require using initial
ramdisk and can make booting process longer (due to probe deferrals).
However adding such option is useful for testing and for multi-platform
configurations.

This also add required module authors to sec-irq.c file based on recent
main contributors.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 7ef170dc766d93ee1b1c407cfee779ec42630544..8c5dfdce4326c8f0f8fc6b9402b18e52f15286ea 100644 (file)
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1032,17 +1032,24 @@ config MFD_RN5T618
          functionality of the device.
 
 config MFD_SEC_CORE
-       bool "SAMSUNG Electronics PMIC Series Support"
+       tristate "SAMSUNG Electronics PMIC Series Support"
        depends on I2C=y
        select MFD_CORE
        select REGMAP_I2C
        select REGMAP_IRQ
        help
-         Support for the Samsung Electronics MFD series.
+         Support for the Samsung Electronics PMIC devices coming
+         usually along with Samsung Exynos SoC chipset.
          This driver provides common support for accessing the device,
          additional drivers must be enabled in order to use the functionality
          of the device
 
+         To compile this driver as a module, choose M here: the
+         module will be called sec-core.
+         Have in mind that important core drivers (like regulators) depend
+         on this driver so building this as a module might require proper
+         initial ramdisk or might not boot up as well in certain scenarios.
+
 config MFD_SI476X_CORE
        tristate "Silicon Laboratories 4761/64/68 AM/FM radio."
        depends on I2C

diff --git a/drivers/mfd/sec-irq.c b/drivers/mfd/sec-irq.c
index 295d24d4501d8dede2bf93bf2da07727df61aaff..ad0099077e7ef1d6062d9d9fec5f98009226e3dd 100644 (file)
--- a/drivers/mfd/sec-irq.c
+++ b/drivers/mfd/sec-irq.c
@@ -6,6 +6,7 @@
 #include <linux/device.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/module.h>
 #include <linux/regmap.h>
 
 #include <linux/mfd/samsung/core.h>
@@ -493,3 +494,10 @@ int sec_irq_init(struct sec_pmic_dev *sec_pmic)
 
        return 0;
 }
+EXPORT_SYMBOL_GPL(sec_irq_init);
+
+MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
+MODULE_AUTHOR("Chanwoo Choi <cw00.choi@samsung.com>");
+MODULE_AUTHOR("Krzysztof Kozlowski <krzk@kernel.org>");
+MODULE_DESCRIPTION("Interrupt support for the S5M MFD");
+MODULE_LICENSE("GPL");