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authorDmitry Osipenko <digetx@gmail.com>2021-01-22 21:55:43 +0300
committerBartosz Golaszewski <bgolaszewski@baylibre.com>2021-02-15 13:43:30 +0300
commit4a6eac2b4b129800a2ab37d7127e2244bce37653 (patch)
tree0cc91da988c0f71b625086eef0da75953f4392f3 /drivers/gpio
parent66f7aaa448a71781a623817cd26551e8179927f8 (diff)
downloadlinux-4a6eac2b4b129800a2ab37d7127e2244bce37653.tar.xz
gpio: tegra: Support building driver as a loadable module
Support building driver as a loadable kernel module. This allows to reduce size of a kernel zImage, which is important for some devices since size of kernel partition may be limited and since some bootloader variants have known problems in regards to the initrd placement if kernel image is too big. $ lsmod Module Size Used by gpio_tegra 16384 27 Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/Kconfig2
-rw-r--r--drivers/gpio/gpio-tegra.c15
2 files changed, 10 insertions, 7 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index f50532e1cf18..c96086f15bc0 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -595,7 +595,7 @@ config GPIO_TB10X
select OF_GPIO
config GPIO_TEGRA
- bool "NVIDIA Tegra GPIO support"
+ tristate "NVIDIA Tegra GPIO support"
default ARCH_TEGRA
depends on ARCH_TEGRA || COMPILE_TEST
depends on OF_GPIO
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c
index e2b739a95ee0..a3c8cea69628 100644
--- a/drivers/gpio/gpio-tegra.c
+++ b/drivers/gpio/gpio-tegra.c
@@ -802,6 +802,7 @@ static const struct of_device_id tegra_gpio_of_match[] = {
{ .compatible = "nvidia,tegra20-gpio", .data = &tegra20_gpio_config },
{ },
};
+MODULE_DEVICE_TABLE(of, tegra_gpio_of_match);
static struct platform_driver tegra_gpio_driver = {
.driver = {
@@ -811,9 +812,11 @@ static struct platform_driver tegra_gpio_driver = {
},
.probe = tegra_gpio_probe,
};
-
-static int __init tegra_gpio_init(void)
-{
- return platform_driver_register(&tegra_gpio_driver);
-}
-subsys_initcall(tegra_gpio_init);
+module_platform_driver(tegra_gpio_driver);
+
+MODULE_DESCRIPTION("NVIDIA Tegra GPIO controller driver");
+MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
+MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
+MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
+MODULE_AUTHOR("Erik Gilling <konkers@google.com>");
+MODULE_LICENSE("GPL v2");