kernel/git/stable/linux.git/drivers/gpio/pca953x.c, branch master

gpio: reorganize drivers

2011-06-06T16:10:11+00:00

Sort the gpio makefile and enforce the naming convention gpio-*.c for gpio drivers. v2: cleaned up filenames in Kconfig and comment blocks v3: fixup use of BASIC_MMIO to GENERIC_GPIO for mxc Signed-off-by: Grant Likely

gpio/pca953x.c: Interrupt pin is active-low

2011-06-06T16:09:42+00:00

The interrupt pin of the PCA953x is active low, and on the rising edge no interrupt should be produced. Signed-off-by: David Jander Signed-off-by: Grant Likely

gpio/pca953x: Add support for pca9574 and pca9575 devices

2011-05-26T19:58:30+00:00

PCA957x is i2c gpio expander, and similar to PCA953x. Although register configurations are different between PCA957x and PCA953x. They can share a lot of components, such as IRQ handling, GPIO IN/OUT. So updating PCA953x driver to support PCA957x chips. Signed-off-by: Haojian Zhuang Signed-off-by: Grant Likely

gpio/pca953x: Use handle_simple_irq instead of handle_edge_irq

2011-05-20T06:40:18+00:00

Make pca953x driver use the simple irq handler since no hardware control is necessary and the driver lacks an irq_ack function. handle_edge_irq() calls chip->irq_ack() which crashes since this function does not exist. Signed-off-by: Erik Botö Signed-off-by: Richard Röjfors Signed-off-by: Grant Likely

gpio/pca953x: fix error handling path in probe() call

2011-03-31T03:28:12+00:00

If the device fails to respond, then the error path tries to remove an interrupt that never got registered, which causes an backtrace from the interrupt handling code. Fix this by ensuring that the cleanup path has two labels and use the correct path as needed. fixes the following error: WARNING: at kernel/irq/manage.c:908 __free_irq+0x80/0x160() Trying to free already-free IRQ 0 Signed-off-by: Ben Dooks Signed-off-by: Mark Brown Signed-off-by: Grant Likely

gpio: Cleanup genirq namespace

2011-03-24T23:02:51+00:00

Converted with coccinelle. Signed-off-by: Thomas Gleixner Acked-by: Grant Likely LKML-Reference: <20110324212509.025730689@linutronix.de> Signed-off-by: Thomas Gleixner

Merge commit 'v2.6.38-rc8' into spi/next

2011-03-12T08:25:53+00:00

Conflicts: drivers/spi/pxa2xx_spi_pci.c

gpio/pca953x: Fix wrong pointer type

2011-02-24T15:55:02+00:00

pca953x_get_alt_pdata() uses uint16_t* as result type for of_get_property(), but numeric of values are __be32. Checking for negative values is bogus because of-property values are unsigned by definition. Instead check for proper property size. v3: - assume big-endian properties - check property size v2: - removed bogus check for negative property values Signed-off-by: Dirk Eibach Signed-off-by: Grant Likely

drivers/gpio/pca953x.c: add a mutex to fix race condition

2011-02-12T00:12:20+00:00

Add a mutex to register communication and handling. Without the mutex, GPIOs didn't switch as expected when toggled in a fast sequence of status changes of multiple outputs. Signed-off-by: Roland Stigge Acked-by: Eric Miao Cc: Grant Likely Cc: Marc Zyngier Cc: Ben Gardner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

gpio: pca953x: irq_data conversion

2011-01-13T16:03:13+00:00

Converts irq_chips and flow handlers over to the new struct irq_data based irq_chip functions. Signed-off-by: Lennert Buytenhek Cc: Alek Du Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds