-/*---------------------------------------------------------------------------
- *
- * compat.h
- * Copyright (c) 2012 Guenter Roeck <linux@roeck-us.net>
+#ifndef __COMPAT_H
+#define __COMPAT_H
+
+#include <linux/version.h>
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 32)
+#error This driver is for kernel versions 2.6.32 and later
+#endif
+
+#if !defined (CONFIG_HWMON_VID) && !defined(CONFIG_HWMON_VID_MODULE)
+int vid_from_reg(int val, u8 vrm)
+{
+ return 0;
+}
+
+u8 vid_which_vrm(void)
+{
+ return 0;
+}
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0)
+#if !(defined RHEL_MAJOR && RHEL_MAJOR == 7)
+#if !(defined RHEL_MAJOR && RHEL_MAJOR == 6 && RHEL_MINOR >= 7)
+static int sysfs_create_groups(struct kobject *kobj,
+ const struct attribute_group **groups)
+{
+ int error = 0;
+ int i;
+
+ if (!groups)
+ return 0;
+
+ for (i = 0; groups[i]; i++) {
+ error = sysfs_create_group(kobj, groups[i]);
+ if (error) {
+ while (--i >= 0)
+ sysfs_remove_group(kobj, groups[i]);
+ break;
+ }
+ }
+ return error;
+}
+#endif
+
+static void sysfs_remove_groups(struct kobject *kobj,
+ const struct attribute_group **groups)
+{
+ int i;
+
+ if (!groups)
+ return;
+ for (i = 0; groups[i]; i++)
+ sysfs_remove_group(kobj, groups[i]);
+}
+#endif
+
+#if !(defined RHEL_MAJOR && RHEL_MAJOR == 7)
+#if !(defined RHEL_MAJOR && RHEL_MAJOR == 6 && RHEL_MINOR >= 7)
+static inline int __must_check PTR_ERR_OR_ZERO(__force const void *ptr)
+{
+ if (IS_ERR(ptr))
+ return PTR_ERR(ptr);
+ else
+ return 0;
+}
+#endif
+#endif
+#endif
+
+#ifdef __NEED_I2C__
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 21)
+#if !(defined RHEL_MAJOR && RHEL_MAJOR == 5 && RHEL_MINOR >= 6)
+/* Simplified version for compatibility */
+struct i2c_board_info {
+ char type[I2C_NAME_SIZE];
+ unsigned short flags;
+ unsigned short addr;
+};
+#endif
+#endif
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 25)
+/* Some older kernels have a different, useless struct i2c_device_id */
+#define i2c_device_id i2c_device_id_compat
+struct i2c_device_id {
+ char name[I2C_NAME_SIZE];
+ kernel_ulong_t driver_data /* Data private to the driver */
+ __attribute__((aligned(sizeof(kernel_ulong_t))));
+};
+#endif
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 32)
+static unsigned short empty_i2c[] = { I2C_CLIENT_END };
+static struct i2c_client_address_data addr_data = {
+ .normal_i2c = normal_i2c,
+ .probe = empty_i2c,
+ .ignore = empty_i2c,
+};
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 2, 0)
+static inline s32
+i2c_smbus_read_word_swapped(const struct i2c_client *client, u8 command)
+{
+ s32 value = i2c_smbus_read_word_data(client, command);
+
+ return (value < 0) ? value : swab16(value);
+}
+
+static inline s32
+i2c_smbus_write_word_swapped(const struct i2c_client *client,
+ u8 command, u16 value)
+{
+ return i2c_smbus_write_word_data(client, command, swab16(value));
+}
+#endif
+
+/* Red Hat EL5 includes backports of these functions, so we can't redefine
+ * our own. */
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 24)
+#if !(defined RHEL_MAJOR && RHEL_MAJOR == 5 && RHEL_MINOR >= 5)
+static inline int strict_strtoul(const char *cp, unsigned int base,
+ unsigned long *res)
+{
+ *res = simple_strtoul(cp, NULL, base);
+ return 0;
+}
+
+static inline int strict_strtol(const char *cp, unsigned int base, long *res)
+{
+ *res = simple_strtol(cp, NULL, base);
+ return 0;
+}
+#endif
+#endif
+
+#endif /* __NEED_I2C__ */
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 28)
+/*
+ * Divide positive or negative dividend by positive divisor and round
+ * to closest integer. Result is undefined for negative divisors and
+ * for negative dividends if the divisor variable type is unsigned.
+ */
+#define DIV_ROUND_CLOSEST(x, divisor)( \
+{ \
+ typeof(x) __x = x; \
+ typeof(divisor) __d = divisor; \
+ (((typeof(x))-1) > 0 || \
+ ((typeof(divisor))-1) > 0 || (__x) > 0) ? \
+ (((__x) + ((__d) / 2)) / (__d)) : \
+ (((__x) - ((__d) / 2)) / (__d)); \
+} \
+)
+#endif
+
+#ifndef module_driver
+/**
+ * module_driver() - Helper macro for drivers that don't do anything
+ * special in module init/exit. This eliminates a lot of boilerplate.
+ * Each module may only use this macro once, and calling it replaces
+ * module_init() and module_exit().
+ *
+ * @__driver: driver name
+ * @__register: register function for this driver type
+ * @__unregister: unregister function for this driver type
+ * @...: Additional arguments to be passed to __register and __unregister.
+ *
+ * Use this macro to construct bus specific macros for registering
+ * drivers, and do not use it on its own.
+ */
+#define module_driver(__driver, __register, __unregister, ...) \
+static int __init __driver##_init(void) \
+{ \
+ return __register(&(__driver) , ##__VA_ARGS__); \
+} \
+module_init(__driver##_init); \
+static void __exit __driver##_exit(void) \
+{ \
+ __unregister(&(__driver) , ##__VA_ARGS__); \
+} \
+module_exit(__driver##_exit);
+#endif
+
+#ifdef __NEED_I2C__
+
+#ifndef module_i2c_driver
+/**
+ * module_i2c_driver() - Helper macro for registering a I2C driver
+ * @__i2c_driver: i2c_driver struct
*
- *---------------------------------------------------------------------------
+ * Helper macro for I2C drivers which do not do anything special in module
+ * init/exit. This eliminates a lot of boilerplate. Each module may only
+ * use this macro once, and calling it replaces module_init() and module_exit()
*/
+#define module_i2c_driver(__i2c_driver) \
+ module_driver(__i2c_driver, i2c_add_driver, \
+ i2c_del_driver)
+#endif
-#ifndef COMPAT_H
-#define COMPAT_H
+#endif /* __NEED_I2C__ */
#ifndef clamp_val
#define clamp_val SENSORS_LIMIT
#endif
+#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 12, 0)
#ifndef kstrtol
#define kstrtol strict_strtol
#endif
#ifndef kstrtoul
#define kstrtoul strict_strtoul
#endif
+#endif
#ifndef request_muxed_region
#define request_muxed_region(a, b, c) (true)
+#endif
+#ifndef release_region
#define release_region(a, b)
#endif
-#endif /* COMPAT_H */
+#ifndef pr_warn
+/* pr_warn macro not introduced until 2.6.35 */
+#define pr_warn pr_warning
+#endif
+#ifndef pr_warn_ratelimited
+#define pr_warn_ratelimited pr_warning_ratelimited
+#endif
+
+#ifndef sysfs_attr_init
+#define sysfs_attr_init(attr) do {} while (0)
+#endif
+
+#ifndef __ATTR_RO
+#define __ATTR_RO(_name) { \
+ .attr = { .name = __stringify(_name), .mode = 0444 }, \
+ .show = _name##_show, \
+}
+#endif
+
+#ifndef DEVICE_ATTR_RO
+#define DEVICE_ATTR_RO(_name) \
+ struct device_attribute dev_attr_##_name = __ATTR_RO(_name)
+#endif
+
+#endif /* __COMPAT_H */
projects / groeck-nct6775 / blobdiff