diff options
| -rw-r--r-- | drivers/platform/arm/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/platform/arm/Makefile | 1 | ||||
| -rw-r--r-- | drivers/platform/arm/board_arndale.c | 89 |
3 files changed, 99 insertions, 0 deletions
diff --git a/drivers/platform/arm/Kconfig b/drivers/platform/arm/Kconfig index c131b89ca5e..1c997d58b89 100644 --- a/drivers/platform/arm/Kconfig +++ b/drivers/platform/arm/Kconfig @@ -9,4 +9,13 @@ menuconfig ARM_PLATFORM_DEVICES If you say N, all options in this submenu will be skipped and disabled. +if ARM_PLATFORM_DEVICES +config ARM_BOARD_ARNDALE + bool "Arndale specific customizations" + default y + depends on ARCH_EXYNOS5 + ---help--- + This is a virtual device to set Arndale specific customizations. + +endif # ARM_PLATFORM_DEVICES diff --git a/drivers/platform/arm/Makefile b/drivers/platform/arm/Makefile index 3f85eb22d98..ce548563f15 100644 --- a/drivers/platform/arm/Makefile +++ b/drivers/platform/arm/Makefile @@ -1,3 +1,4 @@ # # Makefile for ARM platform specific drivers # +obj-$(CONFIG_ARM_BOARD_ARNDALE) += board_arndale.o diff --git a/drivers/platform/arm/board_arndale.c b/drivers/platform/arm/board_arndale.c new file mode 100644 index 00000000000..5878e408254 --- /dev/null +++ b/drivers/platform/arm/board_arndale.c @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2013 Samsung Electronics Co. Ltd. + * Copyright (C) 2013 Linaro Ltd. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/of_gpio.h> +#include <linux/delay.h> + +static void board_arndale_setup_hub_gpio(struct platform_device *pdev, + const char *propname, int level) +{ + int err; + int gpio; + + if (!pdev->dev.of_node) + return; + + gpio = of_get_named_gpio(pdev->dev.of_node, propname, 0); + if (!gpio_is_valid(gpio)) { + dev_err(&pdev->dev, "%s gpio not found", propname); + return; + } + + err = gpio_request_one(gpio, level, propname); + + if (err) + dev_err(&pdev->dev, "can't request %s gpio %d", propname, gpio); + else + gpio_free(gpio); +} + +static void board_arndale_hub_reset(struct platform_device *pdev) +{ + board_arndale_setup_hub_gpio(pdev, "hub-reset", GPIOF_OUT_INIT_LOW); + msleep(1); + board_arndale_setup_hub_gpio(pdev, "hub-reset", GPIOF_OUT_INIT_HIGH); + + board_arndale_setup_hub_gpio(pdev, "hub-connect", GPIOF_OUT_INIT_HIGH); +} + +static int board_arndale_probe(struct platform_device *pdev) +{ + board_arndale_hub_reset(pdev); + return 0; +} + +#ifdef CONFIG_OF +static const struct of_device_id board_arndale_match[] = { + { .compatible = "insignal,arndale-board-setup" }, + {}, +}; +MODULE_DEVICE_TABLE(of, exynos_ehci_match); +#endif + +static struct platform_driver board_arndale_driver = { + .probe = board_arndale_probe, + .driver = { + .name = "board-arndale-setup", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(board_arndale_match), + } +}; + +static int __init board_arndale_init(void) +{ + return platform_driver_register(&board_arndale_driver); +} +late_initcall(board_arndale_init); + +static void __exit board_arndale_exit(void) +{ + platform_driver_unregister(&board_arndale_driver); +} +module_exit(board_arndale_exit); + +MODULE_AUTHOR("Tushar Behera"); +MODULE_LICENSE("GPL v2"); |