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authorTejun Heo <tj@kernel.org>2011-11-28 09:46:22 -0800
committerTejun Heo <tj@kernel.org>2011-11-28 09:46:22 -0800
commitd4bbf7e7759afc172e2bfbc5c416324590049cdd (patch)
tree7eab5ee5481cd3dcf1162329fec827177640018a /include/linux/i2c.h
parenta150439c4a97db379f0ed6faa46fbbb6e7bf3cb2 (diff)
parent401d0069cb344f401bc9d264c31db55876ff78c0 (diff)
downloadop-kernel-dev-d4bbf7e7759afc172e2bfbc5c416324590049cdd.zip
op-kernel-dev-d4bbf7e7759afc172e2bfbc5c416324590049cdd.tar.gz
Merge branch 'master' into x86/memblock
Conflicts & resolutions: * arch/x86/xen/setup.c dc91c728fd "xen: allow extra memory to be in multiple regions" 24aa07882b "memblock, x86: Replace memblock_x86_reserve/free..." conflicted on xen_add_extra_mem() updates. The resolution is trivial as the latter just want to replace memblock_x86_reserve_range() with memblock_reserve(). * drivers/pci/intel-iommu.c 166e9278a3f "x86/ia64: intel-iommu: move to drivers/iommu/" 5dfe8660a3d "bootmem: Replace work_with_active_regions() with..." conflicted as the former moved the file under drivers/iommu/. Resolved by applying the chnages from the latter on the moved file. * mm/Kconfig 6661672053a "memblock: add NO_BOOTMEM config symbol" c378ddd53f9 "memblock, x86: Make ARCH_DISCARD_MEMBLOCK a config option" conflicted trivially. Both added config options. Just letting both add their own options resolves the conflict. * mm/memblock.c d1f0ece6cdc "mm/memblock.c: small function definition fixes" ed7b56a799c "memblock: Remove memblock_memory_can_coalesce()" confliected. The former updates function removed by the latter. Resolution is trivial. Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/linux/i2c.h')
-rw-r--r--include/linux/i2c.h30
1 files changed, 22 insertions, 8 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index a6c652e..07d103a 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -28,12 +28,12 @@
#include <linux/types.h>
#ifdef __KERNEL__
-#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/device.h> /* for struct device */
#include <linux/sched.h> /* for completion */
#include <linux/mutex.h>
#include <linux/of.h> /* for struct device_node */
+#include <linux/swab.h> /* for swab16 */
extern struct bus_type i2c_bus_type;
extern struct device_type i2c_adapter_type;
@@ -48,6 +48,8 @@ struct i2c_driver;
union i2c_smbus_data;
struct i2c_board_info;
+struct module;
+
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
/*
* The master routines are the ones normally used to transmit data to devices
@@ -88,6 +90,22 @@ extern s32 i2c_smbus_read_word_data(const struct i2c_client *client,
u8 command);
extern s32 i2c_smbus_write_word_data(const struct i2c_client *client,
u8 command, u16 value);
+
+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));
+}
+
/* Returns the number of read bytes */
extern s32 i2c_smbus_read_block_data(const struct i2c_client *client,
u8 command, u8 *values);
@@ -414,9 +432,6 @@ void i2c_unlock_adapter(struct i2c_adapter *);
/* Internal numbers to terminate lists */
#define I2C_CLIENT_END 0xfffeU
-/* The numbers to use to set I2C bus address */
-#define ANY_I2C_BUS 0xffff
-
/* Construct an I2C_CLIENT_END-terminated array of i2c addresses */
#define I2C_ADDRS(addr, addrs...) \
((const unsigned short []){ addr, ## addrs, I2C_CLIENT_END })
@@ -434,10 +449,9 @@ extern int i2c_add_numbered_adapter(struct i2c_adapter *);
extern int i2c_register_driver(struct module *, struct i2c_driver *);
extern void i2c_del_driver(struct i2c_driver *);
-static inline int i2c_add_driver(struct i2c_driver *driver)
-{
- return i2c_register_driver(THIS_MODULE, driver);
-}
+/* use a define to avoid include chaining to get THIS_MODULE */
+#define i2c_add_driver(driver) \
+ i2c_register_driver(THIS_MODULE, driver)
extern struct i2c_client *i2c_use_client(struct i2c_client *client);
extern void i2c_release_client(struct i2c_client *client);
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