Merge branch 'master'

6 files changed, 68 insertions, 34 deletions

diff --git a/Documentation/i2c/busses/i2c-i810 b/Documentation/i2c/busses/i2c-i810
index 0544eb332887..83c3b9743c3c 100644
--- a/Documentation/i2c/busses/i2c-i810
+++ b/Documentation/i2c/busses/i2c-i810
@@ -2,6 +2,7 @@ Kernel driver i2c-i810
 
 Supported adapters:
   * Intel 82810, 82810-DC100, 82810E, and 82815 (GMCH)
+  * Intel 82845G (GMCH)
 
 Authors: 
         Frodo Looijaard <frodol@dds.nl>, 
diff --git a/Documentation/i2c/busses/i2c-viapro b/Documentation/i2c/busses/i2c-viapro
index 702f5ac68c09..9363b8bd6109 100644
--- a/Documentation/i2c/busses/i2c-viapro
+++ b/Documentation/i2c/busses/i2c-viapro
@@ -4,17 +4,18 @@ Supported adapters:
   * VIA Technologies, Inc. VT82C596A/B
     Datasheet: Sometimes available at the VIA website
 
-  * VIA Technologies, Inc. VT82C686A/B 
+  * VIA Technologies, Inc. VT82C686A/B
     Datasheet: Sometimes available at the VIA website
 
   * VIA Technologies, Inc. VT8231, VT8233, VT8233A, VT8235, VT8237
     Datasheet: available on request from Via
 
 Authors:
-        Frodo Looijaard <frodol@dds.nl>,  
-        Philip Edelbrock <phil@netroedge.com>, 
-        Kyösti Mälkki <kmalkki@cc.hut.fi>, 
-        Mark D. Studebaker <mdsxyz123@yahoo.com> 
+        Frodo Looijaard <frodol@dds.nl>,
+        Philip Edelbrock <phil@netroedge.com>,
+        Kyösti Mälkki <kmalkki@cc.hut.fi>,
+        Mark D. Studebaker <mdsxyz123@yahoo.com>,
+        Jean Delvare <khali@linux-fr.org>
 
 Module Parameters
 -----------------
@@ -28,20 +29,22 @@ Description
 -----------
 
 i2c-viapro is a true SMBus host driver for motherboards with one of the
-supported VIA southbridges.
+supported VIA south bridges.
 
 Your lspci -n listing must show one of these :
 
- device 1106:3050   (VT82C596 function 3)
- device 1106:3051   (VT82C596 function 3)
+ device 1106:3050   (VT82C596A function 3)
+ device 1106:3051   (VT82C596B function 3)
  device 1106:3057   (VT82C686 function 4)
  device 1106:3074   (VT8233)
  device 1106:3147   (VT8233A)
- device 1106:8235   (VT8231)
- devide 1106:3177   (VT8235)
- devide 1106:3227   (VT8237)
+ device 1106:8235   (VT8231 function 4)
+ device 1106:3177   (VT8235)
+ device 1106:3227   (VT8237R)
 
 If none of these show up, you should look in the BIOS for settings like
 enable ACPI / SMBus or even USB.
 
-
+Except for the oldest chips (VT82C596A/B, VT82C686A and most probably
+VT8231), this driver supports I2C block transactions. Such transactions
+are mainly useful to read from and write to EEPROMs.
diff --git a/Documentation/i2c/chips/x1205 b/Documentation/i2c/chips/x1205
new file mode 100644
index 000000000000..09407c991fe5
--- /dev/null
+++ b/Documentation/i2c/chips/x1205
@@ -0,0 +1,38 @@
+Kernel driver x1205
+===================
+
+Supported chips:
+  * Xicor X1205 RTC
+    Prefix: 'x1205'
+    Addresses scanned: none
+    Datasheet: http://www.intersil.com/cda/deviceinfo/0,1477,X1205,00.html
+
+Authors:
+        Karen Spearel <kas11@tampabay.rr.com>,
+        Alessandro Zummo <a.zummo@towertech.it>
+
+Description
+-----------
+
+This module aims to provide complete access to the Xicor X1205 RTC.
+Recently Xicor has merged with Intersil, but the chip is
+still sold under the Xicor brand.
+
+This chip is located at address 0x6f and uses a 2-byte register addressing.
+Two bytes need to be written to read a single register, while most
+other chips just require one and take the second one as the data
+to be written. To prevent corrupting unknown chips, the user must
+explicitely set the probe parameter.
+
+example:
+
+modprobe x1205 probe=0,0x6f
+
+The module supports one more option, hctosys, which is used to set the
+software clock from the x1205. On systems where the x1205 is the
+only hardware rtc, this parameter could be used to achieve a correct
+date/time earlier in the system boot sequence.
+
+example:
+
+modprobe x1205 probe=0,0x6f hctosys=1
diff --git a/Documentation/i2c/functionality b/Documentation/i2c/functionality
index 41ffefbdc60c..60cca249e452 100644
--- a/Documentation/i2c/functionality
+++ b/Documentation/i2c/functionality
@@ -17,9 +17,10 @@ For the most up-to-date list of functionality constants, please check
   I2C_FUNC_I2C                    Plain i2c-level commands (Pure SMBus
                                   adapters typically can not do these)
   I2C_FUNC_10BIT_ADDR             Handles the 10-bit address extensions
-  I2C_FUNC_PROTOCOL_MANGLING      Knows about the I2C_M_REV_DIR_ADDR,
-                                  I2C_M_REV_DIR_ADDR and I2C_M_REV_DIR_NOSTART
-                                  flags (which modify the i2c protocol!)
+  I2C_FUNC_PROTOCOL_MANGLING      Knows about the I2C_M_IGNORE_NAK,
+                                  I2C_M_REV_DIR_ADDR, I2C_M_NOSTART and
+                                  I2C_M_NO_RD_ACK flags (which modify the
+                                  I2C protocol!)
   I2C_FUNC_SMBUS_QUICK            Handles the SMBus write_quick command
   I2C_FUNC_SMBUS_READ_BYTE        Handles the SMBus read_byte command
   I2C_FUNC_SMBUS_WRITE_BYTE       Handles the SMBus write_byte command
diff --git a/Documentation/i2c/porting-clients b/Documentation/i2c/porting-clients
index 4849dfd6961c..184fac2377aa 100644
--- a/Documentation/i2c/porting-clients
+++ b/Documentation/i2c/porting-clients
@@ -82,7 +82,7 @@ Technical changes:
   exit and exit_free. For i2c+isa drivers, labels should be named
   ERROR0, ERROR1 and ERROR2. Don't forget to properly set err before
   jumping to error labels. By the way, labels should be left-aligned.
-  Use memset to fill the client and data area with 0x00.
+  Use kzalloc instead of kmalloc.
   Use i2c_set_clientdata to set the client data (as opposed to
   a direct access to client->data).
   Use strlcpy instead of strcpy to copy the client name.
diff --git a/Documentation/i2c/writing-clients b/Documentation/i2c/writing-clients
index 077275722a7c..e94d9c6cc522 100644
--- a/Documentation/i2c/writing-clients
+++ b/Documentation/i2c/writing-clients
@@ -33,8 +33,8 @@ static struct i2c_driver foo_driver = {
         .command        = &foo_command /* may be NULL */
 }
  
-The name can be chosen freely, and may be upto 40 characters long. Please
-use something descriptive here.
+The name field must match the driver name, including the case. It must not
+contain spaces, and may be up to 31 characters long.
 
 Don't worry about the flags field; just put I2C_DF_NOTIFY into it. This
 means that your driver will be notified when new adapters are found.
@@ -43,9 +43,6 @@ This is almost always what you want.
 All other fields are for call-back functions which will be explained 
 below.
 
-There use to be two additional fields in this structure, inc_use et dec_use,
-for module usage count, but these fields were obsoleted and removed.
-
 
 Extra client data
 =================
@@ -58,6 +55,7 @@ be very useful.
 An example structure is below.
 
   struct foo_data {
+    struct i2c_client client;
     struct semaphore lock; /* For ISA access in `sensors' drivers. */
     int sysctl_id;         /* To keep the /proc directory entry for 
                               `sensors' drivers. */
@@ -310,22 +308,15 @@ For now, you can ignore the `flags' parameter. It is there for future use.
        client structure, even though we cannot fill it completely yet.
        But it allows us to access several i2c functions safely */
     
-    /* Note that we reserve some space for foo_data too. If you don't
-       need it, remove it. We do it here to help to lessen memory
-       fragmentation. */
-    if (! (new_client = kmalloc(sizeof(struct i2c_client) + 
-                                sizeof(struct foo_data),
-                                GFP_KERNEL))) {
+    if (!(data = kzalloc(sizeof(struct foo_data), GFP_KERNEL))) {
       err = -ENOMEM;
       goto ERROR0;
     }
 
-    /* This is tricky, but it will set the data to the right value. */
-    client->data = new_client + 1;
-    data = (struct foo_data *) (client->data);
+    new_client = &data->client;
+    i2c_set_clientdata(new_client, data);
 
     new_client->addr = address;
-    new_client->data = data;
     new_client->adapter = adapter;
     new_client->driver = &foo_driver;
     new_client->flags = 0;
@@ -451,7 +442,7 @@ much simpler than the attachment code, fortunately!
       release_region(client->addr,LM78_EXTENT);
     /* HYBRID SENSORS CHIP ONLY END */
 
-    kfree(client); /* Frees client data too, if allocated at the same time */
+    kfree(data);
     return 0;
   }
 
@@ -576,12 +567,12 @@ SMBus communication
   extern s32 i2c_smbus_write_block_data(struct i2c_client * client,
                                         u8 command, u8 length,
                                         u8 *values);
+  extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client,
+                                           u8 command, u8 *values);
 
 These ones were removed in Linux 2.6.10 because they had no users, but could
 be added back later if needed:
 
-  extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client,
-                                           u8 command, u8 *values);
   extern s32 i2c_smbus_read_block_data(struct i2c_client * client,
                                        u8 command, u8 *values);
   extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client,