| /* |
| * Copyright (c) 2013 Luis R. Rodriguez <mcgrof@do-not-panic.com> |
| * |
| * Linux backport symbols for kernels 3.10. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/err.h> |
| #include <linux/proc_fs.h> |
| #include <linux/hid.h> |
| |
| #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0)) |
| #include <linux/init.h> |
| #include <linux/debugfs.h> |
| #include <linux/device.h> |
| #include <linux/slab.h> |
| #include <linux/async.h> |
| #include <linux/mutex.h> |
| #include <linux/suspend.h> |
| #include <linux/delay.h> |
| #include <linux/gpio.h> |
| #include <linux/of.h> |
| #include <linux/regmap.h> |
| #include <linux/regulator/of_regulator.h> |
| #include <linux/regulator/consumer.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0)) */ |
| |
| #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0)) |
| /** |
| * regulator_map_voltage_ascend - map_voltage() for ascendant voltage list |
| * |
| * @rdev: Regulator to operate on |
| * @min_uV: Lower bound for voltage |
| * @max_uV: Upper bound for voltage |
| * |
| * Drivers that have ascendant voltage list can use this as their |
| * map_voltage() operation. |
| */ |
| int regulator_map_voltage_ascend(struct regulator_dev *rdev, |
| int min_uV, int max_uV) |
| { |
| int i, ret; |
| |
| for (i = 0; i < rdev->desc->n_voltages; i++) { |
| ret = rdev->desc->ops->list_voltage(rdev, i); |
| if (ret < 0) |
| continue; |
| |
| if (ret > max_uV) |
| break; |
| |
| if (ret >= min_uV && ret <= max_uV) |
| return i; |
| } |
| |
| return -EINVAL; |
| } |
| EXPORT_SYMBOL_GPL(regulator_map_voltage_ascend); |
| |
| #endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0)) */ |
| |
| void proc_set_size(struct proc_dir_entry *de, loff_t size) |
| { |
| de->size = size; |
| } |
| EXPORT_SYMBOL_GPL(proc_set_size); |
| |
| void proc_set_user(struct proc_dir_entry *de, kuid_t uid, kgid_t gid) |
| { |
| de->uid = uid; |
| de->gid = gid; |
| } |
| EXPORT_SYMBOL_GPL(proc_set_user); |
| |
| /* |
| * Allocator for buffer that is going to be passed to hid_output_report() |
| */ |
| u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags) |
| { |
| /* |
| * 7 extra bytes are necessary to achieve proper functionality |
| * of implement() working on 8 byte chunks |
| */ |
| |
| int len = ((report->size - 1) >> 3) + 1 + (report->id > 0) + 7; |
| |
| return kmalloc(len, flags); |
| } |
| EXPORT_SYMBOL_GPL(hid_alloc_report_buf); |