linux-toradex.git/drivers/gpio, branch tegra-9.12.13

gpiolib: fix request related issue

2009-01-30T02:04:43+00:00

Fix request-already-requested handling in gpio_request().

Signed-off-by: Magnus Damm 
Acked-by: David Brownell 
Cc: 		[2.6.28.x]
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

gpio: fix probe() error return in gpio driver probes

2009-01-16T00:39:35+00:00

A number of drivers in drivers/gpio return -ENODEV when confronted with
missing setup parameters such as the platform data.  However, returning
-ENODEV causes the driver layer to silently ignore the driver as it
assumes the probe did not find anything and was only speculative.

To make life easier to discern why a driver is not being attached, change
to returning -EINVAL, which is a better description of the fact that the
driver data was not valid.

Also add a set of dev_dbg() statements to the error paths to provide an
better explanation of the error as there may be more that one point in the
driver.

Signed-off-by: Ben Dooks 
Cc: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6

2009-01-07T01:02:07+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6: (60 commits)
  uio: make uio_info's name and version const
  UIO: Documentation for UIO ioport info handling
  UIO: Pass information about ioports to userspace (V2)
  UIO: uio_pdrv_genirq: allow custom irq_flags
  UIO: use pci_ioremap_bar() in drivers/uio
  arm: struct device - replace bus_id with dev_name(), dev_set_name()
  libata: struct device - replace bus_id with dev_name(), dev_set_name()
  avr: struct device - replace bus_id with dev_name(), dev_set_name()
  block: struct device - replace bus_id with dev_name(), dev_set_name()
  chris: struct device - replace bus_id with dev_name(), dev_set_name()
  dmi: struct device - replace bus_id with dev_name(), dev_set_name()
  gadget: struct device - replace bus_id with dev_name(), dev_set_name()
  gpio: struct device - replace bus_id with dev_name(), dev_set_name()
  gpu: struct device - replace bus_id with dev_name(), dev_set_name()
  hwmon: struct device - replace bus_id with dev_name(), dev_set_name()
  i2o: struct device - replace bus_id with dev_name(), dev_set_name()
  IA64: struct device - replace bus_id with dev_name(), dev_set_name()
  i7300_idle: struct device - replace bus_id with dev_name(), dev_set_name()
  infiniband: struct device - replace bus_id with dev_name(), dev_set_name()
  ISDN: struct device - replace bus_id with dev_name(), dev_set_name()
  ...

gpio: pca953x handles more chips, i2c fault codes

2009-01-06T23:59:25+00:00

Minor updates to the pca953x GPIO expander driver: handle several more
compatible parts, and stop assuming that the I2C layer's return codes are
garbage (that's now been fixed).

Signed-off-by: David Brownell 
Cc: Eric Miao 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

twl4030-gpio: cleanup debounce

2009-01-06T23:59:25+00:00

Provide a static debounce configuration mechanism for twl4030 GPIOs,
replacing the previous dynamic one.  The single user of that mechanism was
for MMC card detect debouncing.

Boards can provide a bitmask saying which GPIOs to debounce (30 msec).
It's always enabled for pins with the MMC card-detect/VMMCx link active,
so most boards won't need to set the debounce mask.

This is a net code shrink, including runtime footprint.

Signed-off-by: David Brownell 
Signed-off-by: Tony Lindgren 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

gpio: struct device - replace bus_id with dev_name(), dev_set_name()

2009-01-06T18:44:42+00:00

Signed-off-by: Kay Sievers 
Signed-off-by: Greg Kroah-Hartman

gpiolib: extend gpio label column width in debugfs file

2008-11-20T02:49:57+00:00

There are already various drivers having bigger label than 12 bytes.  Most
of them fit well under 20 bytes but make column width exact so that
oversized labels don't mess up output alignment.

Signed-off-by: Jarkko Nikula 
Acked-by: David Brownell 
Cc: 		[2.6.26.x, 2.6.26.x, 2.6.27.x]
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

GPIO: add new Xilinx driver for powerpc

2008-11-13T01:17:16+00:00

This driver supports the Xilinx XPS GPIO IP core which has the typical
GPIO features.

Signed-off-by: Kiran Sutariya 
Signed-off-by: John Linn 
Cc: David Brownell 
Cc: Paul Mackerras 
Cc: Benjamin Herrenschmidt 
Cc: Kumar Gala 
Cc: "Grant Likely" 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mfd: twl4030-gpio driver

2008-10-21T23:19:39+00:00

This adds basic support for the GPIOs in the twl4030 power management
chip.  That includes two open drain LED drivers, and the use of GPIO-0
(and GPIO-1) as MMC/SD card detect switches which can control whether
the VMMC1 (and VMMC2) regulators are active.

This version of the code has a debounce call that will probably be
replaced before long, when a more generic interface exists.

Signed-off-by: David Brownell 
Signed-off-by: Tony Lindgren 
Signed-off-by: Samuel Ortiz

Merge branch 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2008-10-20T20:23:01+00:00

This merges branches irq/genirq, irq/sparseirq-v4, timers/hpet-percpu
and x86/uv.

The sparseirq branch is just preliminary groundwork: no sparse IRQs are
actually implemented by this tree anymore - just the new APIs are added
while keeping the old way intact as well (the new APIs map 1:1 to
irq_desc[]).  The 'real' sparse IRQ support will then be a relatively
small patch ontop of this - with a v2.6.29 merge target.

* 'genirq-v28-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (178 commits)
  genirq: improve include files
  intr_remapping: fix typo
  io_apic: make irq_mis_count available on 64-bit too
  genirq: fix name space collisions of nr_irqs in arch/*
  genirq: fix name space collision of nr_irqs in autoprobe.c
  genirq: use iterators for irq_desc loops
  proc: fixup irq iterator
  genirq: add reverse iterator for irq_desc
  x86: move ack_bad_irq() to irq.c
  x86: unify show_interrupts() and proc helpers
  x86: cleanup show_interrupts
  genirq: cleanup the sparseirq modifications
  genirq: remove artifacts from sparseirq removal
  genirq: revert dynarray
  genirq: remove irq_to_desc_alloc
  genirq: remove sparse irq code
  genirq: use inline function for irq_to_desc
  genirq: consolidate nr_irqs and for_each_irq_desc()
  x86: remove sparse irq from Kconfig
  genirq: define nr_irqs for architectures with GENERIC_HARDIRQS=n
  ...