This patch control special clock for ADC in Exynos series's FSYS block.
If special clock of ADC is registerd on clock list of common clk framework,
Exynos ADC drvier have to control this clock.
Exynos3250/Exynos4/Exynos5 has 'adc' clock as following:
- 'adc' clock: bus clock for ADC
Exynos3250 has additional 'sclk_adc' clock as following:
- 'sclk_adc' clock: special clock for ADC which provide clock to internal ADC
Exynos 4210/4212/4412 and Exynos5250/5420 has not included 'sclk_adc' clock
in FSYS_BLK. But, Exynos3250 based on Cortex-A7 has only included 'sclk_adc'
clock in FSYS_BLK.
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patchset add 'exynos_adc_data' structure which includes some functions
to control ADC operation and specific data according to ADC version (v1 or v2).
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
driver uses i2c_smbus_read_word_data() to the data in the trigger handler and hence
already does endianness conversion; the I2C chip has data in little endian, but the
value is provides in CPU endianness
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Assigning indio_dev->trig is not a good idea, as this can result in
wrong reference count for trigger device. If assigned, it is better to
increment reference counter by calling iio_trigger_get.
Refer to http://www.spinics.net/lists/linux-iio/msg13669.html for discussion
with Jonathan.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This chip needs explicit interrupt ack, introducing try_reenable
callback. Also removed separate function to ack interrupt as this
doesn't add any value.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Fix issue with setting of 12.5 and 6.25 HZ. The match of val2 fails.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add the HID usage attribute ID's and IIO channel info for rotation
from north support.
Signed-off-by: Reyad Attiyat <reyad.attiyat@gmail.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Scan for and count the HID usage attributes supported by the driver.
This allows for the driver to only setup the IIO channels for the
sensor usages present in the HID USB reports.
Changes from v5
-Fixed kernel panic from invalid pointer dereference
-Fixed variable assignment style
Signed-off-by: Reyad Attiyat <reyad.attiyat@gmail.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Added the rotation from north usage attributes to the iio modifier enum and to the iio modifier names array.
Signed-off-by: Reyad Attiyat <reyad.attiyat@gmail.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Allows explicity enabling of events
Previously, events were always reported as enabled, but actually only
implicitly enabled when updating the buffer scan mode
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
only report an event as enabled if it actually is enabled
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
rename since function is used by all chips with ALERT pin, not just ad7997/8
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
writing ALERT_EN and BUSY_ALERT to the chip config register clears
pending alerts, BUSY_ALERT is cleared when reading back the register
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
an IRQ is necessary to handle the ALERT condition; without
IRQ, the IIO event interface serves no purpose
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
New drivers
* isl29125 digital color light sensor driver
* TAOS/AMS tcs3414 digital color sensor
Staging graduation
* ad7291 ADC driver.
New functionality
* st_sensors - device tree support and bindings
* mma8452 - device tree support
Cleanups
* Drop redundant variables in a number of drivers.
* Reorder a structure definition to ealy wiht a warning about static
not being at the beginning in the hid-sensors driver.
* Switch a few more drivers away from using explicit sampling_frequency
attribute to providing this through the core.
* Make hid_sensor_get_reporting_interval static as only used within a single
file.
* Drop a redundant check for negative values in an unsigned variable from
ad9832
* Drop some duplicate case labels in the event monitor example code.
* Use devm_ioremap_resource to simplify error handling.
* Use devm_kzalloc within the blackfin timer driver to simplify error
handling and removal.
* A number of cleanups of the ad7291 from Hartmut Knaack in response
to a patch moving it out of staging.
* Core support for the period info element about events. It has been
in the abi for a while, but not added until now to the newer handling
of information related to events.
* Add HAS_IOMEM dependency to mxs_lradc to avoid build issues when testing
enabled.
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Merge tag 'iio-for-3.17c' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
3rd round of IIO new drivers, cleanups and functionality for the 3.17 cycle.
New drivers
* isl29125 digital color light sensor driver
* TAOS/AMS tcs3414 digital color sensor
Staging graduation
* ad7291 ADC driver.
New functionality
* st_sensors - device tree support and bindings
* mma8452 - device tree support
Cleanups
* Drop redundant variables in a number of drivers.
* Reorder a structure definition to ealy wiht a warning about static
not being at the beginning in the hid-sensors driver.
* Switch a few more drivers away from using explicit sampling_frequency
attribute to providing this through the core.
* Make hid_sensor_get_reporting_interval static as only used within a single
file.
* Drop a redundant check for negative values in an unsigned variable from
ad9832
* Drop some duplicate case labels in the event monitor example code.
* Use devm_ioremap_resource to simplify error handling.
* Use devm_kzalloc within the blackfin timer driver to simplify error
handling and removal.
* A number of cleanups of the ad7291 from Hartmut Knaack in response
to a patch moving it out of staging.
* Core support for the period info element about events. It has been
in the abi for a while, but not added until now to the newer handling
of information related to events.
* Add HAS_IOMEM dependency to mxs_lradc to avoid build issues when testing
enabled.
Allow the mma8452 to be described in the device tree.
Since no device specific binding attributes exist the trivial
I2C binding is sufficient to describe the compatible string.
Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The iio sysfs ABI defines a way to specify period for roc and thresholds.
What: /sys/.../events/in_accel_x_thresh_rising_period
What: /sys/.../events/in_accel_x_thresh_falling_period
what: /sys/.../events/in_accel_x_roc_rising_period
What: /sys/.../events/in_accel_x_roc_falling_period
But there is no way to add period with the current event info enum.
Added IIO_EV_INFO_PERIOD and corresponding string.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The I2C devices that make up the STMicroelectronics MEMS sensors
may be sneakily enabled by cleverly giving the device node the same
name as a string match from the platform device ID table. However
the right method is to use the compatible string.
On detection, the ST sensors use the ID string to probe and
instatiate the right sensor driver, so pass the kernel-internal ID
string in the .data field of the OF match table, and set the I2C
client name to this name when a compatible match is used.
This avoids having misc Linux-specific strings floating around in
the device tree.
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Denis CIOCCA <denis.ciocca@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The ad7291 driver is in a reasonable shape. It does not use non-standard API/ABI
and there are no major style issues with the driver. So this patch moves it out
of staging.
There is one small warning from checkpatch which is also fixed in this patch.
The patch also sorts the #include directives in alphabetical order.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This fixes the following sparse warning:
CHECK drivers/iio/common/hid-sensors/hid-sensor-attributes.c
drivers/iio/common/hid-sensors/hid-sensor-attributes.c:346:5: warning:
symbol 'hid_sensor_get_reporting_interval' was not declared. Should it be static?
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Currently the STMicroelectronics sensors only support one single
platform data item: configuration of the DRDY (data ready) pin
for a particular design. Augment the core to prioritize and take
this information from the device tree if the parent device has an
assigned device node, else fall back to passed in platform data
(usually the default data).
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Denis CIOCCA <denis.ciocca@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
By using the info_mask_shared_by_all element of the channel spec, access
to the sampling frequency becomes available to in kernel users of the
driver. It also shortens and simplifies the code.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
By using the info_mask_shared_by_all element of the channel spec, access
to the sampling frequency becomes available to in kernel users of the
driver. It also shortens and simplifies the code.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
By using the info_mask_shared_by_all element of the channel spec, acce
to the sampling frequency becomes available to in kernel users of the
driver. It also shortens and simplifies the code.
This particular conversion was made more complicated by the shared library
and the fact that a number of the drivers do not actually have support for
setting or reading the sampling frequency. The hardware, in those cases
investigated supports it. It's just never been implemented.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
By using the info_mask_shared_by_all element of the channel spec, access
to the sampling frequency becomes available to in kernel users of the
driver. It also shortens and simplifies the code a little.
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Cc: Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
Cc: Thorsten Nowak <thorsten.nowak@iis.fraunhofer.de>
Cc: Christian Strobel <christian.strobel@iis.fraunhofer.de>
This allows in kernel client drivers to access this
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Denis Ciocca <denis.ciocca@st.com>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Move the 'static' keyword to beginning of definition to silence the
following compilation warning:
drivers/iio/common/hid-sensors/hid-sensor-attributes.c:34:1: warning: ‘static’ is not at beginning of declaration [-Wold-style-declaration]
Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Cc: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
'offset’ is not used in the function. Remove it.
Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
‘regdone’ is not used in the function. Remove it.
Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Cc: Michael Hennerich <hennerich@blackfin.uclinux.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
By re-arranging the code, 'ret' can be removed from this
function.
Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
By re-arranging the code, 'ret' can be removed from this
function.
Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
'rx' is not used in this function. Remove it.
Signed-off-by: Sachin Kamat <sachin.kamat@samsung.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
New drivers
* mcp4902, mcp4912 and mcp4922 SPI DAC driver.
* max1027, max1029 and max1031 SPI ADC driver.
Cleanups
* cm32181 - use devm APIs to simplify error paths.
* ak8975 - use devm APIs to simplify error paths.
* ad9850 - drop some unused defines and an unnecessary goto.
* hmc5843 - add missing devices to the device id table and the documentation.
* ad9832 - small formatting cleanups.
* sca3000 - hide direct use of the stufftoread element by adding a
data_available function. This is a precursor for the addition of buffer
watermarks to the subsystem but stands as a good cleanup on its own.
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Merge tag 'iio-for-3.17b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
Second round of new drivers and cleanups for IIO in the 3.17 cycle.
New drivers
* mcp4902, mcp4912 and mcp4922 SPI DAC driver.
* max1027, max1029 and max1031 SPI ADC driver.
Cleanups
* cm32181 - use devm APIs to simplify error paths.
* ak8975 - use devm APIs to simplify error paths.
* ad9850 - drop some unused defines and an unnecessary goto.
* hmc5843 - add missing devices to the device id table and the documentation.
* ad9832 - small formatting cleanups.
* sca3000 - hide direct use of the stufftoread element by adding a
data_available function. This is a precursor for the addition of buffer
watermarks to the subsystem but stands as a good cleanup on its own.
Change sca3000_ring implementation so that it exports a data_available
function to iio.
Signed-off-by: Josselin Costanzi <josselin.costanzi@mobile-devices.fr>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This driver add partial support of the
maxim 1027/1029/1031. Differential mode is not
supported.
It was tested on armadeus apf27 board.
Signed-off-by: Philippe Reynes <tremyfr@yahoo.fr>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch changes API from iio_device_register() to devm_* API.
Using API make code simpler.
Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Currently in the inkern.c code for IIO framework, the function
of_iio_channel_get_by_name() will return a non-NULL pointer when
it cannot find a channel using of_iio_channel_get() and when it
tries to search for 'io-channel-ranges' property and fails. This
is incorrect behaviour as the function which calls this expects
a NULL pointer for failure. This patch rectifies the issue.
Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
This patch provides an iio device driver for the Microchip
MCP49x2 series DACs.
Signed-off-by: Michael Welling <mwelling@ieee.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
last two bits of ADC and limit values are zero and should not be reported
(ad7993, ad7997); compare with read_raw()
event values are 10 (ad7993, ad7997) or 12 bit max., check the range on write
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Stable@vger.kernel.org
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
New drivers
* t5403 barometric pressure sensor
* kxcjk1013 accelerometer (with a locking followup fix).
* ak09911 digital compass
Documentation
* ABI docs for proximity added (interface has been there a long time but
somehow snuck through without being documented)
* Move iio-trig-sysfs documentation out of staging (got left behind when
the driver moved some time ago).
Cleanups
* drop the timestamp argument from iio_trigger_poll(_chained) as
nothing has been done with it for some time.
* ad799x kerneldoc for ad799x_chip brought up to date.
* replace a number of reimplementations of the GENMASK macro and
use the BIT macro to cleanup a few locations.
* bring the iio_event_monitor example program up to date with new
device types.
* fix some incorrect function prototypes in iio_utils.h example code.
* INDIO_RING_TRIGGERED to INDIO_BUFFER_TRIGGERED fix in docs. This
got left behind after we renamed it a long time back.
* fix error handling in the generic_buffer example program.
* small tidy ups in the iio-trig-periodic-rtc driver.
* Allow reseting iio-trig-periodic-rtc frequency to 0 (default) after
it has changed.
* Trivial tidy ups in coding style in iio_simply_dummy
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Merge tag 'iio-for-3.17a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
First round of new drivers, cleanups and functionality for the 3.17 cycle.
New drivers
* t5403 barometric pressure sensor
* kxcjk1013 accelerometer (with a locking followup fix).
* ak09911 digital compass
Documentation
* ABI docs for proximity added (interface has been there a long time but
somehow snuck through without being documented)
* Move iio-trig-sysfs documentation out of staging (got left behind when
the driver moved some time ago).
Cleanups
* drop the timestamp argument from iio_trigger_poll(_chained) as
nothing has been done with it for some time.
* ad799x kerneldoc for ad799x_chip brought up to date.
* replace a number of reimplementations of the GENMASK macro and
use the BIT macro to cleanup a few locations.
* bring the iio_event_monitor example program up to date with new
device types.
* fix some incorrect function prototypes in iio_utils.h example code.
* INDIO_RING_TRIGGERED to INDIO_BUFFER_TRIGGERED fix in docs. This
got left behind after we renamed it a long time back.
* fix error handling in the generic_buffer example program.
* small tidy ups in the iio-trig-periodic-rtc driver.
* Allow reseting iio-trig-periodic-rtc frequency to 0 (default) after
it has changed.
* Trivial tidy ups in coding style in iio_simply_dummy
