linux-toradex.git/drivers/i2c, branch v2.6.20.19

i2c/m41t00: Do not forget to write year

2007-01-05T16:54:05+00:00

m41t00.c forgets to set the year field in set_rtc_time; fix that.

Signed-off-by: Philippe De Muyter 
Signed-off-by: Andrew Morton 
Acked-by: Mark A. Greer 
Signed-off-by: Jean Delvare

i2c-mv64xxx: Fix random oops at boot

2007-01-05T16:54:05+00:00

I have a Marvell board which has the same i2c hw block than mv64xxx, so
I'm trying to use i2c-mv64xxx driver.

But I get the following random oops at boot:

Unable to handle kernel NULL pointer dereference at virtual address 00000002
Backtrace: 
[] (mv64xxx_i2c_intr+0x0/0x2b8) from [] (__do_irq+0x4c/0x8c)
[] (__do_irq+0x0/0x8c) from [] (do_level_IRQ+0x68/0xc0)
 r8 = C0501E08  r7 = 00000005  r6 = C0501E08  r5 = 00000005
 r4 = C048BB78 
[] (do_level_IRQ+0x0/0xc0) from [] (asm_do_IRQ+0x50/0x134)
 r6 = C0449C78  r5 = F1020000  r4 = FFFFFFFF 
[] (asm_do_IRQ+0x0/0x134) from [] (__irq_svc+0x24/0x100)
 r8 = C1CAC400  r7 = 00000005  r6 = 00000002  r5 = F1020000
 r4 = FFFFFFFF 
[] (setup_irq+0x0/0x124) from [] (request_irq+0xb0/0xd0)
 r7 = C041B2AC  r6 = C0397E4C  r5 = 00000000  r4 = 00000005
[] (request_irq+0x0/0xd0) from [] (mv64xxx_i2c_probe+0x148/0x244)
[] (mv64xxx_i2c_probe+0x0/0x244) from [] (platform_drv_probe+0x20/0x24)


The oops is caused by a spurious interrupt that occurs when request_irq
is called. mv64xxx_i2c_fsm() tries to read drv_data->msg, which is NULL.

I noticed that hardware init is done after requesting irq. Thus any
pending irq from previous hardware usage may cause this.

The following patch fixes it:


Signed-off-by: Maxime Bizon 
Acked-by: Mark A. Greer 
Signed-off-by: Jean Delvare

i2c: Migration aids for i2c_adapter.dev removal

2007-01-04T12:07:04+00:00

Flag i2c_adapter.dev for removal after userspace tools get upgraded, and
include a near-term code migration aid to facilitate this:

 - The class device gets the name attribute it should have had.  This
   was previously (wrongly) associated with the i2c_adapter.dev node.
   Sysfs based tools and libraries can start converting right away.

 - Issue a warning for legacy adapter drivers that don't provide any
   physical device node; so systems with those drivers will know to
   fix this problem earlier.

This is one of a series of patches to help the I2C stack become a better
citizen of the Linux Driver Model world.

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

i2c-pnx: Fix interrupt handler, get rid of EARLY config option

2007-01-04T12:07:03+00:00

This fixes two issues raised by David Brownell on the i2c list:

<< Someone needs to update i2c-pnx.c to handle the IRQ handler doesn't
expect pt_regs (gone now for a while), and so it doesn't try to
reference "mudule_init()" if I2C isn't initialized "early".  For
that matter, to get rid of that _option_ to initialize then, and
always init that driver with subsystem_init() ... it's common with
embedded systems to need I2C access to tweak a GPIO expander or
do some other work when bringing up drivers, that's not specific
to USB stacks. >>

Signed-off-by: Vitaly Wool 
Signed-off-by: Jean Delvare

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

2006-12-13T17:13:19+00:00

* 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  hwmon: Add MAINTAINERS entry for new ams driver
  hwmon: New AMS hardware monitoring driver
  hwmon/w83793: Add documentation and maintainer
  hwmon: New Winbond W83793 hardware monitoring driver
  hwmon: Update Rudolf Marek's e-mail address
  hwmon/f71805f: Fix the device address decoding
  hwmon/f71805f: Always create all fan inputs
  hwmon/f71805f: Add support for the Fintek F71872F/FG chip
  hwmon: New PC87427 hardware monitoring driver
  hwmon/it87: Remove the SMBus interface support
  hwmon/hdaps: Update the list of supported devices
  hwmon/hdaps: Move the DMI detection data to .data
  hwmon/pc87360: Autodetect the VRM version
  hwmon/f71805f: Document the fan control features
  hwmon/f71805f: Add support for "speed mode" fan speed control
  hwmon/f71805f: Support DC fan speed control mode
  hwmon/f71805f: Let the user adjust the PWM base frequency
  hwmon/f71805f: Add manual fan speed control
  hwmon/f71805f: Store the fan control registers

[PATCH] fix more workqueue build breakage (tps65010)

2006-12-13T17:05:46+00:00

More fixes to build breakage from the work_struct changes ...  this updates
the tps65010 driver.  Plus, fix some dependencies related to the way it's
used on the OMAP OSK: force static linking there, since the resulting
kernel can't link.

NOTE that until the i2c core gets fixed to work without SMBUS_QUICK,
kernels needing this driver must still use "tps65010.force=0,0x48" on the
command line.

Signed-off-by: David Brownell 
Cc: Jean Delvare 
Cc: Russell King 
Cc: David Howells 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

hwmon: Update Rudolf Marek's e-mail address

2006-12-12T17:18:30+00:00

The Silicon Hill club is not what it used to be.

Signed-off-by: Rudolf Marek 
Signed-off-by: Jean Delvare

i2c: Fix OMAP clock prescaler to match the comment

2006-12-10T20:21:34+00:00

Signed-off-by: Jean Delvare 
Signed-off-by: Tony Lindgren

i2c: Refactor a kfree in i2c-dev

2006-12-10T20:21:33+00:00

Refactor kfree(i2c_dev) into return_i2c_dev(). This saves some
code and makes more sense, as the memory is allocated in
get_free_i2c_dev().

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

i2c: Fix return value check in i2c-dev

2006-12-10T20:21:33+00:00

device_create() returns error code as pointer on failures.
This patch checks the return value of device_create() by using IS_ERR().

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