linux-toradex.git/drivers/i2c/i2c-dev.c, branch v2.6.31.12

i2c-dev: Clarify the unit of ioctl I2C_TIMEOUT

2009-02-24T18:19:49+00:00

The unit in which user-space can set the bus timeout value is jiffies
for historical reasons (back when HZ was always 100.) This is however
not good because user-space doesn't know how long a jiffy lasts. The
timeout value should instead be set in a fixed time unit. Given the
original value of HZ, this unit should be 10 ms, for compatibility.

Signed-off-by: Jean Delvare 
Acked-by: Wolfram Sang

device create: misc: convert device_create_drvdata to device_create

2008-10-16T16:24:43+00:00

Now that device_create() has been audited, rename things back to the
original call to be sane.

Signed-off-by: Greg Kroah-Hartman

i2c-dev: Return correct error code on class_create() failure

2008-09-24T11:39:21+00:00

We need to convert the error pointer from class_create(), else we'll return the
successful return code from register_chrdev() on failure.

Signed-off-by: Sven Wegener 
Signed-off-by: Jean Delvare

i2c: correct some size_t printk formats

2008-08-10T20:56:16+00:00

Fix various printk format strings where %zd was passed a size_t;
those should be %zu instead.  (Courtesy of a version of GCC which
warns when these details are wrong.)

Signed-off-by: David Brownell 
Signed-off-by: Jean Delvare

device create: i2c: convert device_create to device_create_drvdata

2008-07-22T04:54:42+00:00

device_create() is race-prone, so use the race-free
device_create_drvdata() instead as device_create() is going away.

Cc: Jean Delvare 
Signed-off-by: Greg Kroah-Hartman

Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6

2008-07-15T18:16:05+00:00

* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6: (56 commits)
  i2c: Add detection capability to new-style drivers
  i2c: Call client_unregister for new-style devices too
  i2c: Clean up old chip drivers
  i2c-ibm_iic: Register child nodes
  i2c: New-style EEPROM driver using device IDs
  i2c: Export the i2c_bus_type symbol
  i2c-au1550: Fix PM support
  i2c-dev: Delete empty detach_client callback
  i2c: Drop stray references to lm_sensors
  i2c: Check for ACPI resource conflicts
  i2c-ocores: basic PM support
  i2c-sibyte: SWARM I2C board initialization
  i2c-i801: Fix handling of error conditions
  i2c-i801: Rename local variable temp to status
  i2c-i801: Properly report bus arbitration loss
  i2c-i801: Remove verbose debugging messages
  i2c-algo-pcf: Drop unused struct members
  i2c-algo-pcf: Multi-master lost-arbitration improvement
  i2c: Deprecate the legacy gpio drivers
  i2c-pxa: Initialize early
  ...

i2c-dev: Delete empty detach_client callback

2008-07-14T20:38:34+00:00

Implementing detach_client is optional, so there is no point in
an empty implementation.

Likewise, i2c driver IDs are optional, and we don't need one.

Signed-off-by: Jean Delvare

i2c: Push ioctl BKL down into the i2c code

2008-07-14T20:38:27+00:00

This is part of the effort to get rid of the BKL.

[JD: In fact i2c-dev doesn't need more locking than is already done
for the other i2c drivers, so we can simply switch to unlocked_ioctl.]

Signed-off-by: Alan Cox 
Signed-off-by: Jean Delvare

i2c: cdev lock_kernel() pushdown

2008-05-18T21:43:40+00:00

Signed-off-by: Jonathan Corbet

i2c-dev: Split i2cdev_ioctl

2008-04-22T20:16:47+00:00

Split the handling of the I2C_RDWR and I2C_SMBUS ioctls to their own
functions. This limits the stack usage, saves one level of indentation
and makes the code more readable.

Signed-off-by: Jean Delvare