From 4a6eac2b4b129800a2ab37d7127e2244bce37653 Mon Sep 17 00:00:00 2001 From: Dmitry Osipenko Date: Fri, 22 Jan 2021 21:55:43 +0300 Subject: [PATCH] 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 Reviewed-by: Linus Walleij Signed-off-by: Bartosz Golaszewski --- drivers/gpio/Kconfig | 2 +- drivers/gpio/gpio-tegra.c | 15 +++++++++------ 2 files changed, 10 insertions(+), 7 deletions(-) diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index f50532e..c96086f 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 e2b739a..a3c8cea 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 "); +MODULE_AUTHOR("Stephen Warren "); +MODULE_AUTHOR("Thierry Reding "); +MODULE_AUTHOR("Erik Gilling "); +MODULE_LICENSE("GPL v2"); -- 2.7.4