diff options
Diffstat (limited to 'patches.tizen/0866-extcon-Add-an-API-to-get-extcon-device-from-dt-node.patch')
| -rw-r--r-- | patches.tizen/0866-extcon-Add-an-API-to-get-extcon-device-from-dt-node.patch | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/patches.tizen/0866-extcon-Add-an-API-to-get-extcon-device-from-dt-node.patch b/patches.tizen/0866-extcon-Add-an-API-to-get-extcon-device-from-dt-node.patch new file mode 100644 index 00000000000..b1d06399f6b --- /dev/null +++ b/patches.tizen/0866-extcon-Add-an-API-to-get-extcon-device-from-dt-node.patch @@ -0,0 +1,176 @@ +From 7a1e5d177aa332820d97805cd0dc2cbda6dd6ed2 Mon Sep 17 00:00:00 2001 +From: Kishon Vijay Abraham I <kishon@ti.com> +Date: Tue, 11 Jun 2013 20:48:02 +0900 +Subject: [PATCH 0866/1302] extcon: Add an API to get extcon device from dt + node + +Added an API of_extcon_get_extcon_dev() to be used by drivers to get +extcon device in the case of dt boot (this can be used instead of +extcon_get_extcon_dev()). + +Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> +Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> +Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com> +Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com> +--- + drivers/extcon/Kconfig | 4 +++ + drivers/extcon/Makefile | 2 ++ + drivers/extcon/extcon-class.c | 3 +- + drivers/extcon/of_extcon.c | 64 ++++++++++++++++++++++++++++++++++++++++ + include/linux/extcon/of_extcon.h | 31 +++++++++++++++++++ + 5 files changed, 103 insertions(+), 1 deletion(-) + create mode 100644 drivers/extcon/of_extcon.c + create mode 100644 include/linux/extcon/of_extcon.h + +diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig +index 90b3ad0..aaebc6d 100644 +--- a/drivers/extcon/Kconfig ++++ b/drivers/extcon/Kconfig +@@ -14,6 +14,10 @@ if EXTCON + + comment "Extcon Device Drivers" + ++config OF_EXTCON ++ def_tristate y ++ depends on OF ++ + config EXTCON_GPIO + tristate "GPIO extcon support" + depends on GPIOLIB +diff --git a/drivers/extcon/Makefile b/drivers/extcon/Makefile +index 034bb95..b04c038 100644 +--- a/drivers/extcon/Makefile ++++ b/drivers/extcon/Makefile +@@ -2,6 +2,8 @@ + # Makefile for external connector class (extcon) devices + # + ++obj-$(CONFIG_OF_EXTCON) += of_extcon.o ++ + obj-$(CONFIG_EXTCON) += extcon-class.o + obj-$(CONFIG_EXTCON_GPIO) += extcon-gpio.o + obj-$(CONFIG_EXTCON_ADC_JACK) += extcon-adc-jack.o +diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c +index e7b851b..972b157 100644 +--- a/drivers/extcon/extcon-class.c ++++ b/drivers/extcon/extcon-class.c +@@ -626,7 +626,8 @@ int extcon_dev_register(struct extcon_dev *edev, struct device *dev) + edev->dev->class = extcon_class; + edev->dev->release = extcon_dev_release; + +- dev_set_name(edev->dev, edev->name ? edev->name : dev_name(dev)); ++ edev->name = edev->name ? edev->name : dev_name(dev); ++ dev_set_name(edev->dev, edev->name); + + if (edev->max_supported) { + char buf[10]; +diff --git a/drivers/extcon/of_extcon.c b/drivers/extcon/of_extcon.c +new file mode 100644 +index 0000000..72173ec +--- /dev/null ++++ b/drivers/extcon/of_extcon.c +@@ -0,0 +1,64 @@ ++/* ++ * OF helpers for External connector (extcon) framework ++ * ++ * Copyright (C) 2013 Texas Instruments, Inc. ++ * Kishon Vijay Abraham I <kishon@ti.com> ++ * ++ * Copyright (C) 2013 Samsung Electronics ++ * Chanwoo Choi <cw00.choi@samsung.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ */ ++ ++#include <linux/module.h> ++#include <linux/slab.h> ++#include <linux/err.h> ++#include <linux/extcon.h> ++#include <linux/of.h> ++#include <linux/of_platform.h> ++#include <linux/extcon/of_extcon.h> ++ ++/* ++ * of_extcon_get_extcon_dev - Get the name of extcon device from devicetree ++ * @dev - instance to the given device ++ * @index - index into list of extcon_dev ++ * ++ * return the instance of extcon device ++ */ ++struct extcon_dev *of_extcon_get_extcon_dev(struct device *dev, int index) ++{ ++ struct device_node *node; ++ struct extcon_dev *edev; ++ struct platform_device *extcon_parent_dev; ++ ++ if (!dev->of_node) { ++ dev_dbg(dev, "device does not have a device node entry\n"); ++ return ERR_PTR(-EINVAL); ++ } ++ ++ node = of_parse_phandle(dev->of_node, "extcon", index); ++ if (!node) { ++ dev_dbg(dev, "failed to get phandle in %s node\n", ++ dev->of_node->full_name); ++ return ERR_PTR(-ENODEV); ++ } ++ ++ extcon_parent_dev = of_find_device_by_node(node); ++ if (!extcon_parent_dev) { ++ dev_dbg(dev, "unable to find device by node\n"); ++ return ERR_PTR(-EPROBE_DEFER); ++ } ++ ++ edev = extcon_get_extcon_dev(dev_name(&extcon_parent_dev->dev)); ++ if (!edev) { ++ dev_dbg(dev, "unable to get extcon device : %s\n", ++ dev_name(&extcon_parent_dev->dev)); ++ return ERR_PTR(-ENODEV); ++ } ++ ++ return edev; ++} ++EXPORT_SYMBOL_GPL(of_extcon_get_extcon_dev); +diff --git a/include/linux/extcon/of_extcon.h b/include/linux/extcon/of_extcon.h +new file mode 100644 +index 0000000..0ebfeff +--- /dev/null ++++ b/include/linux/extcon/of_extcon.h +@@ -0,0 +1,31 @@ ++/* ++ * OF helpers for External connector (extcon) framework ++ * ++ * Copyright (C) 2013 Texas Instruments, Inc. ++ * Kishon Vijay Abraham I <kishon@ti.com> ++ * ++ * Copyright (C) 2013 Samsung Electronics ++ * Chanwoo Choi <cw00.choi@samsung.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ */ ++ ++#ifndef __LINUX_OF_EXTCON_H ++#define __LINUX_OF_EXTCON_H ++ ++#include <linux/err.h> ++ ++#if IS_ENABLED(CONFIG_OF_EXTCON) ++extern struct extcon_dev ++ *of_extcon_get_extcon_dev(struct device *dev, int index); ++#else ++static inline struct extcon_dev ++ *of_extcon_get_extcon_dev(struct device *dev, int index) ++{ ++ return ERR_PTR(-ENOSYS); ++} ++#endif /* CONFIG_OF_EXTCON */ ++#endif /* __LINUX_OF_EXTCON_H */ +-- +1.8.3.2 + |