gpio: tps68470: Allow building as module

The gpio-tps68470 driver binds to a tps68470-gpio platform-device which
itself gets instantiated by a special MFD driver from
drivers/platform/x86/intel/int3472/tps68470.c

This MFD driver itself can be built as a module, so it makes no sense to
force the gpio-tps68470 driver to always be built-in.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 1c211b4..04c48f3 100644 (file)
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -1380,7 +1380,7 @@ config GPIO_TPS65912
          This driver supports TPS65912 GPIO chip.
 
 config GPIO_TPS68470
-       bool "TPS68470 GPIO"
+       tristate "TPS68470 GPIO"
        depends on INTEL_SKL_INT3472
        help
          Select this option to enable GPIO driver for the TPS68470
@@ -1390,10 +1390,6 @@ config GPIO_TPS68470
          input or output as appropriate, the sensor related GPIOs
          are "output only" GPIOs.
 
-         This driver config is bool, as the GPIO functionality
-         of the TPS68470 must be available before dependent
-         drivers are loaded.
-
 config GPIO_TQMX86
        tristate "TQ-Systems QTMX86 GPIO"
        depends on MFD_TQMX86 || COMPILE_TEST

diff --git a/drivers/gpio/gpio-tps68470.c b/drivers/gpio/gpio-tps68470.c
index 423b7bc..aaddcab 100644 (file)
--- a/drivers/gpio/gpio-tps68470.c
+++ b/drivers/gpio/gpio-tps68470.c
@@ -154,5 +154,8 @@ static struct platform_driver tps68470_gpio_driver = {
        },
        .probe = tps68470_gpio_probe,
 };
+module_platform_driver(tps68470_gpio_driver);
 
-builtin_platform_driver(tps68470_gpio_driver)
+MODULE_ALIAS("platform:tps68470-gpio");
+MODULE_DESCRIPTION("GPIO driver for TPS68470 PMIC");
+MODULE_LICENSE("GPL v2");