linux.git/drivers/staging/iio/trigger, branch v3.7

staging:iio:trigger:bfintmr Add output support

2012-09-17T21:10:00+00:00

Some converters require an external signal to start the conversion. This patch
adds support to the bfintmr trigger driver to generate such a signal.

Signed-off-by: Lars-Peter Clausen 
Signed-off-by: Jonathan Cameron

staging:iio:trigger:bfintmr: Only enable timer when necessary

2012-09-17T21:10:00+00:00

This patch hooks up the set_trigger_state callback for the blackfin timer
trigger driver and only enables the timer when a trigger consumer requests it to
be enabled. There really is no reason to keep the timer running and generate
interrupts if nobody is listening to them.

Signed-off-by: Lars-Peter Clausen 
Signed-off-by: Jonathan Cameron

staging:iio:trigger:bfintmr: Avoid divide by zero

2012-09-17T21:09:59+00:00

If the timer frequency has not been configured yet get_gptimer_period() will
return 0. Handle this case instead of blindly dividing by the returned value.

Signed-off-by: Lars-Peter Clausen 
Signed-off-by: Jonathan Cameron

staging:iio:sysfs-trigger: Use irq_work to properly active trigger

2012-09-06T21:00:28+00:00

Since iio_trigger_poll() calls generic_handle_irq() it need to be called from
hardirq context. The sysfs trigger is kicked from userspace, so it is obviously
not possible to fulfill this requirement by calling iio_trigger_poll directly.
As a workaround commit 1f785681 ("staging:iio:trigger sysfs userspace trigger
rework.") added iio_trigger_poll_chained() which uses handle_nested_irq instead
of generic_handle_irq. This in itself is a hack and only works by chance.
handle_nested_irq is intended to be called from the threaded interrupt handler
of the parent IRQ. Using handle_nested_irq is also problematic since it will
only call the threaded handler of the IRQ. But quite a few IIO drivers rely on
their hardirq handler being called or undefined behaviour will occur.

This patch uses the irq_work framework to schedule the call to
iio_trigger_poll() from hardirq context, which fixes the issues described above.

Signed-off-by: Lars-Peter Clausen 
Signed-off-by: Jonathan Cameron

staging:iio: Update email address for Jonathan Cameron.

2012-09-03T19:26:46+00:00

Signed-off-by: Jonathan Cameron

staging:iio: Add missing devinit and devexit annotations

2012-08-27T17:58:11+00:00

Autogenerated using the following coccinelle semantic patch:

// 
@r1@
identifier driver;
identifier fn;
position p;
type T;
@@
T driver = {
 .remove =
(
 fn@p
|
 __devexit_p(fn@p)
)
};

@r2@
identifier r1.fn;
position p != r1.p;
@@
fn@p

@r3@
identifier r1.fn;
position r1.p;
@@
(
 __devexit_p(fn@p)
|
-fn@p
+__devexit_p(fn)
)

@depends on !r2@
identifier r1.fn;
@@
 static
-int fn
+int __devexit fn
 (...) { ... }

@r11@
identifier driver;
identifier fn;
position p;
type T;
@@
T driver = {
	.probe = fn@p
};

@r12@
identifier r11.fn;
position p != r11.p;
@@
fn@p

@depends on !r12@
identifier r11.fn;
@@
 static
-int fn
+int __devinit fn
 (...) { ... }
// 

Signed-off-by: Lars-Peter Clausen 
Signed-off-by: Jonathan Cameron

staging:iio:trigger: Use to_iio_trigger() instead of dev_get_drvdata()

2012-06-23T04:08:10+00:00

Use to_iio_trigger(dev) instead of dev_get_drvdata(dev). Both will return the
trigger which belongs to the device, but the the first on is a bit more
lightweight. Also this will eventually free up the drvdata pointer of the device
for driver specific data.

Signed-off-by: Lars-Peter Clausen 
Acked-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

staging:iio: Streamline API function naming

2012-04-30T01:23:49+00:00

Currently we use two different naming schemes in the IIO API, iio_verb_object
and iio_object_verb. E.g iio_device_register and iio_allocate_device. This
patches renames instances of the later to the former. The patch also renames allocate to
alloc as this seems to be the preferred form throughout the kernel.

In particular the following renames are performed by the patch:
	iio_put_device -> iio_device_put
	iio_allocate_device -> iio_device_alloc
	iio_free_device -> iio_device_free
	iio_get_trigger -> iio_trigger_get
	iio_put_trigger -> iio_trigger_put
	iio_allocate_trigger -> iio_trigger_alloc
	iio_free_trigger -> iio_trigger_free

The conversion was done with the following coccinelle patch with manual fixes to
comments and documentation.


@@
@@
-iio_put_device
+iio_device_put
@@
@@
-iio_allocate_device
+iio_device_alloc
@@
@@
-iio_free_device
+iio_device_free
@@
@@
-iio_get_trigger
+iio_trigger_get
@@
@@
-iio_put_trigger
+iio_trigger_put
@@
@@
-iio_allocate_trigger
+iio_trigger_alloc
@@
@@
-iio_free_trigger
+iio_trigger_free


Signed-off-by: Lars-Peter Clausen 
Acked-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

IIO: Move core headers to include/linux/iio

2012-04-25T18:01:43+00:00

Step 1 in moving the IIO core out of staging.

Signed-off-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman

staging: iio: Convert platform_drivers to use module_platform_driver

2012-03-03T00:35:39+00:00

No functional changes.

Signed-off-by: Michael Hennerich 
Acked-by: Jonathan Cameron 
Signed-off-by: Greg Kroah-Hartman