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path: root/drivers/staging/iio/adc/ad7780.c
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2012-11-21staging: iio: remove use of __devexit_pBill Pemberton
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21staging: iio: remove use of __devexitBill Pemberton
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-21staging: iio: remove use of __devinitBill Pemberton
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-22staging:iio:ad7780: Add support for the ad7170/ad7171Lars-Peter Clausen
The ad7170/ad7171 have a software interface similar to the ad7780. They do not have an external pin which allows to change the internal gain and the what is used for the gain bit in the ad7780/ad7781 becomes part of the check pattern. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2012-09-22staging:iio:ad7780: Make powerdown GPIO optionalLars-Peter Clausen
Some designs hardwire the PDRST pin to always on. In this case there is no GPIO to control the mode of the device, so make the GPIO optional. Since now all of the the platform data fields are optional now, make the platform data as a whole optional as well. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2012-08-27staging:iio: Add missing __devinit and __devexit annotationsLars-Peter Clausen
Autogenerated using the following coccinelle semantic patch: // <smpl> @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 (...) { ... } // </smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2012-08-27staging:iio:ad7780: Use common Sigma Delta libraryLars-Peter Clausen
Convert the ad7780 driver to make use of the new common code for devices from the Analog Devices Sigma Delta family. As a bonus the ad7780 driver gains support for buffered mode. Although this is a bit tricky. The ad7780 reports in the lower 4 unused bits of the data word the internal gain used. The driver will update the scale attribute value depending on the gain accordingly, but obviously this will only work if the gain does not change while sampling. This is not perfect, but since we store the raw value in the buffer an application which is aware of this can extract the gain factor from the buffer as well an apply it accordingly. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2012-08-16staging:iio:ad7780: Mark channels as unsignedLars-Peter Clausen
The values reported by the AD7780 are unsigned with a binary offset: 0x000000 is negative fullscale 0x800000 is zeroscale 0xffffff is positive fullscale So mark the channel in the channel spec as unsigned rather than signed. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2012-04-29staging:iio: Streamline API function namingLars-Peter Clausen
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. <smpl> @@ @@ -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 </smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-04-25IIO: Move core headers to include/linux/iioJonathan Cameron
Step 1 in moving the IIO core out of staging. Signed-off-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-04-18staging:iio:adc Add IIO_CHAN_INFO_RAW entries to all drivers.Jonathan Cameron
Precursor to making value read / write attribute optional. No processed values for adc's. Updated to include the spear adc driver (hence introducing a dependency on the patch that adds that driver). Signed-off-by: Jonathan Cameron <jic23@kernel.org> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-04-13staging:iio:accel:ad7780 unwind use of IIO_CHAN macro.Jonathan Cameron
This macro is being removed to simplify ongoing maintenance so we need to unwind and remaining users. Signed-off-by: Jonathan Cameron <jic23@kernel.org> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-01-09Merge branch 'staging-next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging * 'staging-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (466 commits) net/hyperv: Add support for jumbo frame up to 64KB net/hyperv: Add NETVSP protocol version negotiation net/hyperv: Remove unnecessary kmap_atomic in netvsc driver staging/rtl8192e: Register against lib80211 staging/rtl8192e: Convert to lib80211_crypt_info staging/rtl8192e: Convert to lib80211_crypt_data and lib80211_crypt_ops staging/rtl8192e: Add lib80211.h to rtllib.h staging/mei: add watchdog device registration wrappers drm/omap: GEM, deal with cache staging: vt6656: int.c, int.h: Change return of function to void staging: usbip: removed unused definitions from header staging: usbip: removed dead code from receive function staging:iio: Drop {mark,unmark}_in_use callbacks staging:iio: Drop buffer mark_param_change callback staging:iio: Drop the unused buffer enable() and is_enabled() callbacks staging:iio: Drop buffer busy flag staging:iio: Make sure a device is only opened once at a time staging:iio: Disallow modifying buffer size when buffer is enabled staging:iio: Disallow changing scan elements in all buffered modes staging:iio: Use iio_buffer_enabled instead of open coding it ... Fix up conflict in drivers/staging/iio/adc/ad799x_core.c (removal of module_init due to using module_i2c_driver() helper, next to removal of MODULE_ALIAS due to using MODULE_DEVICE_TABLE instead).
2011-12-08staging:iio: Remove redundant spi driver bus initializationLars-Peter Clausen
In ancient times it was necessary to manually initialize the bus field of an spi_driver to spi_bus_type. These days this is done in spi_register_driver() so we can drop the manual assignment. The patch was generated using the following coccinelle semantic patch: // <smpl> @@ identifier _driver; @@ struct spi_driver _driver = { .driver = { - .bus = &spi_bus_type, }, }; // </smpl> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-11-26staging:iio: Add missing MODULE_DEVICE_TABLE and MODULE_ALIASLars-Peter Clausen
Quite a few iio drivers provide no MODULE_DEVICE_TABLE or MODULE_ALIAS or only provide a MODULE_ALIAS while they have support for multiple device ids. This prevents auto module loading from working correctly. This patch fixes it by adding the missing MODULE_DEVICE_TABLEs and MODULE_ALIAS'. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-11-26staging:iio:treewide only use shared to decide on interfacesJonathan Cameron
Internally the fact that say scale is shared across channels is actually of remarkably little interest. Hence lets not store it. Numerous devices have weird combinations of channels sharing scale anyway so it is not as though this was really telling us much. Note however that we do still use the shared sysfs attrs thus massively reducing the number of attrs in complex drivers. Side effect is that certain drivers that were abusing this (mostly my work) needed to do a few more checks on what the channel they are being queried on actually is. This is also helpful for in kernel interfaces where we just want to query the scale and don't care whether it is shared with other channels or not. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-11-26staging:iio: Do not use bitmasks for channel info addressesLars-Peter Clausen
Currently the iio framework uses bitmasks for the address field of channel info attributes. This is for historical reasons and no longer required since it will only ever query a single info attribute at once. This patch changes the code to use the non-shifted iio_chan_info_enum values for the info attribute address. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-11-17staging:iio: Use module_spi_driver to register SPI driverLars-Peter Clausen
Use the newly introduced module_spi_driver macro for registering SPI drivers. This allows us to remove a few lines of boilerplate code. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Jonathan Cameron <jic23@kernel.org> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-10-17staging:iio: fix removal path to allow correct freeing.Jonathan Cameron
Fix a dumb lack of consideration of the effect of combining the iio_device_unregister and iio_free_device calls into one. There is no valid place to free some of the sysfs array elements. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-29staging:iio: unwind the IIO_IN -> IIO_VOLTAGE defineJonathan Cameron
This was originally there to avoid churn during a complex change. Now everything is stable lets get rid of this as it is missleading and confusing. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-09-26staging:iio: rename ring_generic.h -> buffer_generic.hJonathan Cameron
Nothing in this file is specific to RING buffers so rename it. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-25staging: Add module.h to drivers/staging usersPaul Gortmaker
Lots of people expect module.h to just "be there" without any #include effort. But we are crushing that. So fix those files in staging relying on implicit module.h presence. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-08-23staging:iio:adc: unused header removals.Jonathan Cameron
More headers now not needed after iio_chan_spec conversions. A couple of drivers were using helpers from adc.h. Given these were trivial, they are pushed down into the drivers. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-19staging:iio: implement an iio_info structure to take some of the constant ↵Jonathan Cameron
elements out of iio_dev. This was suggested by Arnd Bergmann, Other elements may well move in here in future, but it definitely makes sense for these. Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-19staging:iio:ad7780 trivial unused header cleanup.Jonathan Cameron
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-19staging:iio:adc: AD7780: Use private data space from iio_allocate_device + ↵Michael Hennerich
trivial fixes Use private data space from iio_allocate_device Drop dev_data in favour of iio_priv() Fix typo in gpio name Fix error return path, free gpio Make scale_uv type unsigned long Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-19staging:iio:adc:AD7780: Convert to new channel registration methodMichael Hennerich
Convert to new channel registration method Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-19staging:iio: use the new central name attribute creation codeJonathan Cameron
Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-25staging:iio: Add ability to allocate private data space to iio_allocate_deviceJonathan Cameron
Suggested by Arnd Bergmann. Note this will break ALL drivers that are out of mainline. The fix is trivial change of iio_allocate_device() -> iio_allocate_device(0) Sorry if this causes issues for any one! V2: Include new drivers in the update Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-04-05staging: IIO: ADC: New driver for the AD7780 / AD7781 24-bit Sigma-Delta ADCMichael Hennerich
Changes since v1: IIO: ADC: AD7780: Apply review feedback Abort probe() with error in case platform_data is not present. Add comment explaining power down reset (PDRST) GPIO handling and dual function DOUT/RDY interrupt usage. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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