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18 commits

Author SHA1 Message Date
Wolfram Sang
fbae3fb154 i2c: Remove all i2c_set_clientdata(client, NULL) in drivers
I2C drivers can use the clientdata-pointer to point to private data. As I2C
devices are not really unregistered, but merely detached from their driver, it
used to be the drivers obligation to clear this pointer during remove() or a
failed probe(). As a couple of drivers forgot to do this, it was agreed that it
was cleaner if the i2c-core does this clearance when appropriate, as there is
no guarantee for the lifetime of the clientdata-pointer after remove() anyhow.
This feature was added to the core with commit
e4a7b9b04d to fix the faulty drivers.

As there is no need anymore to clear the clientdata-pointer, remove all current
occurrences in the drivers to simplify the code and prevent confusion.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-06-03 11:33:58 +02:00
Tejun Heo
5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
Jean Delvare
e5e9f44c24 i2c: Drop I2C_CLIENT_INSMOD_2 to 8
These macros simply declare an enum, so drivers might as well declare
it themselves. This puts an end to the arbitrary limit of 8 chip types
per i2c driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
2009-12-14 21:17:27 +01:00
Jean Delvare
c3813d6af1 i2c: Get rid of struct i2c_client_address_data
Struct i2c_client_address_data only contains one field at this point,
which makes its usefulness questionable. Get rid of it and pass simple
address lists around instead.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
2009-12-14 21:17:25 +01:00
Jean Delvare
310ec79210 i2c: Drop the kind parameter from detect callbacks
The "kind" parameter always has value -1, and nobody is using it any
longer, so we can remove it.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
2009-12-14 21:17:23 +01:00
Jean Delvare
52df6440a2 hwmon: Clean up detect functions
As kind is now hard-coded to -1, there is room for code clean-ups.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Corentin Labbe <corentin.labbe@geomatys.fr>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Juerg Haefliger <juergh@gmail.com>
Cc: Riku Voipio <riku.voipio@iki.fi>
Acked-by: "Hans J. Koch" <hjk@linutronix.de>
Cc: Rudolf Marek <r.marek@assembler.cz>
2009-12-09 20:35:57 +01:00
Riku Voipio
b26e0ed493 trivial: Update my email address
Update my email address.

Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-03-30 15:22:04 +02:00
Andrew Klossner
51b3e27001 hwmon: (f75375s) Remove unnecessary and confusing initialization
f75375_probe calls i2c_get_clientdata to initialize the data pointer,
but there isn't yet any client data to get, and the value is never
used before the variable is assigned a new value seven lines later.

The call doesn't hurt anything and wastes only a couple of cycles.
The reason to fix it is because this module serves as an example to
hackers writing new hwmon drivers, and this part of the example is
confusing.

Signed-off-by: Andrew Klossner <andrew@cesa.opbu.xerox.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2009-03-12 13:36:39 +01:00
Jean Delvare
935ada8c44 hwmon: (f75375s) Drop legacy i2c driver
Drop the legacy f75375s i2c driver, and add a detect callback to the
new-style i2c driver to achieve the same functionality.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Riku Voipio <riku.voipio@movial.fi>
2008-07-16 19:30:11 +02:00
Jean Delvare
3760f73671 i2c: Convert most new-style drivers to use module aliasing
Based on earlier work by Jon Smirl and Jochen Friedrich.

Update most new-style i2c drivers to use standard module aliasing
instead of the old driver_name/type driver matching scheme. I've
left the video drivers apart (except for SoC camera drivers) as
they're a bit more diffcult to deal with, they'll have their own
patch later.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Jon Smirl <jonsmirl@gmail.com>
Cc: Jochen Friedrich <jochen@scram.de>
2008-04-29 23:11:40 +02:00
Jean Delvare
d2653e9273 i2c: Add support for device alias names
Based on earlier work by Jon Smirl and Jochen Friedrich.

This patch allows new-style i2c chip drivers to have alias names using
the official kernel aliasing system and MODULE_DEVICE_TABLE(). At this
point, the old i2c driver binding scheme (driver_name/type) is still
supported.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Jochen Friedrich <jochen@scram.de>
Cc: Jon Smirl <jonsmirl@gmail.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
2008-04-29 23:11:39 +02:00
Mark M. Hoffman
25e9c86d5a hwmon: normal_i2c arrays should be const
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2008-02-18 21:58:15 -05:00
Riku Voipio
76e83bef15 hwmon: (f75375s) pwmX_mode sysfs files writable for f75375 variant
Fix value check in set_pwm_mode(). Instead of checking for chip variant there,
make pwmX_mode sysfs nodes only writable on f75375 variant.

Signed-off-by: Riku Voipio <riku.voipio@movial.fi>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-11-08 08:42:47 -05:00
Riku Voipio
ff312d07c2 hwmon: (f75375s) Allow setting up fans with platform_data
Allow initializing fans on systems where BIOS does not do that by
default.

 - define f75375s_platform_data in new file f75375s.h
 - if platform_data was provided, set fans accordingly in f75375_init()
 - split set_pwm_enable() to a sysfs callback and directly usable
   set_pwm_enable_direct()

Signed-off-by: Riku Voipio <riku.voipio@movial.fi>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-11-08 08:42:46 -05:00
Riku Voipio
620c142db2 hwmon: (f75375s) Add new style bindings
Following the example of David Brownell's work on lm75:

 - Create a second driver struct, using new-style driver binding methods.

 - Rename the old driver struct as f75375_legacy_driver.

 - Make the legacy bind/unbind logic delegate all its work.

Signed-off-by: Riku Voipio <riku.voipio@movial.fi>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-11-08 08:42:46 -05:00
Riku Voipio
19e4f3a616 hwmon: (f75375s) fix pwm mode setting
Spotted by the Coverity checker. (Thanks Adrian Bunk)

Signed-off-by: Riku Voipio <riku.voipio@iki.fi>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-11-08 08:42:46 -05:00
Tony Jones
1beeffe433 hwmon: Convert from class_device to device
Convert from class_device to device for hwmon_device_register/unregister

Signed-off-by: Tony Jones <tonyj@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-10-09 22:56:30 -04:00
Riku Voipio
84f1e44296 hwmon: Add f75375s driver
Add support for Fintek F75375S/SP and F75373.

Signed-off-by: Riku Voipio <riku.voipio@movial.fi>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
2007-10-09 22:56:29 -04:00