sensor has 4 channels (10-bit each, R/G/B and clear), sensitivity
and gain is controlled in the driver by ext_info integration_time
and CHAN_INFO_HARDWAREGAIN
driver supports triggered buffer and IIO_CHAN_INFO_RAW to get the
sensor data
v5: address comments by Jonathan Cameron
* use macro for channel declaration
* get timestamp right before measurement
* cleanups
v4: address comments by Lars-Peter Clausen
* make sure trigger handler is exited with iio_trigger_notify_done()
and IRQ_HANDLED
* kfree()/kalloc() -> krealloc()
v3:
* fix warnings
v2: address comments by Lars-Peter Clausen
* buffer allocation now in update_scan_mode instead of in trigger
handler
* simplify trigger code (assume active_scan_mask is not empty, use
for_each_set_bit, use iio_push_to_buffer)
* reorder entry in Makefile and Kconfig
* fix remove
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add iio channel type and modifiers for Correlated Color Temperature (CCT)
and RGBC (red/green/blue/clear) data.
Add CCT and RGBC descriptions to documentation.
Changes:
Revised/condensed RGBC descriptions.
Merge and trivial fix done by Jonathan Cameron.
Signed-off-by: Jon Brenner <jbrenner@taosinc.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Only one of the channels of the ade7758 may be sampled at a time. Use the new
validate_scan_mask callback and the iio_validate_scan_mask_onehot function to
implement this restriction. Previously this was implemented using
available_scan_masks, but this requires a individual scan mask for each channel.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Only one of the channels of the ad7793 may be sampled at a time. Use the new
validate_scan_mask callback and the iio_validate_scan_mask_onehot function to
implement this restriction. Previously this was implemented using
available_scan_masks, but this requires a individual scan mask for each channel.
Also the previous code was adding the scan index of the timestamp channel to
each available scan mask, this is not required though since the timestamp
channel is not restricted by the available scan masks and can be enabled or
disabled independently. So the new code does not have to take care of this.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Only one of the channels of the ad7192 may be sampled at a time. Use the new
validate_scan_mask callback and the iio_validate_scan_mask_onehot function to
implement this restriction. Previously this was implemented using
available_scan_masks, but this requires a individual scan mask for each channel.
Also the previous code was adding the scan index of the timestamp channel to
each available scan mask, this is not required though since the timestamp
channel is not restricted by the available scan masks and can be enabled or
disabled independently. So the new code does not have to take care of this.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add a helper function for validating a scan mask for devices where exactly one
channel must be selected during sampling. This is a common case among devices
which have scan mask restrictions so it makes sense to provide this function in
the core.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This is useful for cases where the number of valid scan masks grows
exponentially, but it is rather easy to check whether a mask is valid or not
programmatically.
An example of such a case is a device with multiple ADCs where each ADC has a
upstream MUX, which allows to select from a number of physical channels.
+-------+ +-------+
| | | | --- Channel 1
| ADC 1 |---| MUX 1 | --- ...
| | | | --- Channel M
+-------+ +-------+
. . .
. . .
. . .
+-------+ +-------+
| | | | --- Channel M * N + 1
| ADC N |---| MUX N | --- ...
| | | | --- Channel M * N + M
+-------+ +-------+
The number of necessary scan masks for this case is (M+1)**N - 1, on the other
hand it is easy to check whether subsets for each ADC of the scanmask have only
one bit set.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The adt7410 expects information about an irq in platform_data.
The driver can work without an irq, so make platform_data optional
by specifying a dummy platform_data if the device has none.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
In 13bit mode the lower three bits of the adc value contain
flags. The driver does not use these flags at all, so make 16bit
mode the default.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The name sysfs attribute is the same for all triggers, so there is no need to
register them dynamically at runtime. Create a attribute group for it and set it
up for the bus attribute group. This also avoids a possible race condition
where the uevent for the device is sent before the name sysfs attribute has been
added.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
maybe iio_modifier_names and iio_chan_type_name_spec should be
exported from industrialio-core instead?
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sparse complains that "arg" is not a __user pointer. The "argp" and
"arg" variables are equivalent but argp is declared as a __user pointer.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-By: Martyn Welch <martyn.welch@ge.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The IRQ vector should be saved in MEM space base address according to the
datasheet.
Signed-off-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
All these macros are not used. So, remove this all.
Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
this following warn is fixed up
drivers/staging/ft1000/ft1000-usb/ft1000_hw.c:1754:
ERROR: open brace '{' following function declarations go on the next line
Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dynamically allocate my_sym_buf to silence the following warning:
drivers/staging/tidspbridge/dynload/cload.c:
In function 'dload_symbols':
drivers/staging/tidspbridge/dynload/cload.c:890:
warning: the frame size of 1040 bytes is larger than 1024 bytes
Signed-off-by: Omar Ramirez Luna <omar.ramirez@copitl.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dynamically allocate ibuf to silence the following warning:
drivers/staging/tidspbridge/dynload/cload.c:
In function 'dload_data':
drivers/staging/tidspbridge/dynload/cload.c:1337:
warning: the frame size of 1216 bytes is larger than 1024 bytes
Signed-off-by: Omar Ramirez Luna <omar.ramirez@copitl.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Due to its size, this function declares too many variables,
to split it a new structure has been declared to hold values
as they are read from the baseimage.
While at it, indentation was reduced by renaming variables
and reducing blocks of code with the following structure:
if (success) {
...
if (success)
...
}
This fixes the following warning:
drivers/staging/tidspbridge/core/io_sm.c:
In function 'bridge_io_on_loaded':
drivers/staging/tidspbridge/core/io_sm.c:777:
warning: the frame size of 1032 bytes is larger
than 1024 bytes
Signed-off-by: Omar Ramirez Luna <omar.ramirez@copitl.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
And fix the following warning for passing an incorrect
variable type.
../tiomap3430.c: In function 'user_va2_pa':
../tiomap3430.c:1555:
warning: passing argument 1 of 'pmd_offset' from
incompatible pointer type
arch/arm/include/asm/pgtable-2level.h:156:
note: expected 'struct pud_t *' but argument is of
type 'pmdval_t (*)[2]'
While at it, eliminate 'if' nesting to increase readability.
Signed-off-by: Omar Ramirez Luna <omar.ramirez@copitl.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These two functions only has commented code, so remove it.
Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The function crypto_sep_dump_message don't have any use in this driver. So remove it.
Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Changed a call to strict_strtoul() into kstrtou8() in
pod_set_midi_postprocess().
Signed-off-by: Johannes Thumshirn <morbidrsa@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Changed strict_strtoul() to kstrtou() in pod_set_channel() to take changes in
pod_send_channel() into account.
Signed-off-by: Johannes Thumshirn <morbidrsa@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Exchanged call to strict_strtoul() with kstrtou8() in pod_resolve().
Signed-off-by: Johannes Thumshirn <morbidrsa@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Exchange strict_strtoul() with kstrtou8() and make "value" a u8 instead of a
unsigned long. This is also needed for the changed
line6_pod_transmit_parameter().
Signed-off-by: Johannes Thumshirn <morbidrsa@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Adjusted interface of pod_send_channel() in order to take changes of
line6_send_program() into account.
Signed-off-by: Johannes Thumshirn <morbidrsa@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Adjusted interface of line6_send_program() to clarify internal working
Signed-off-by: Johannes Thumshirn <morbidrsa@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Adjusted interface of line6_pod_transmit_parameter() to take changes of
line6_transmit_parameter() into account
Signed-off-by: Johannes Thumshirn <morbidrsa@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Adjusted strict_strtoul calls to kstrtou8 in order to take the changes of
line6_transmit_parameter() into account.
Signed-off-by: Johannes Thumshirn <morbidrsa@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The style of most kernel code is that there is 1 *space* between the
type of a variable and its name. This patch enforces that in
drivers/staging/vt6656/int.c .
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When assigning a void* to a variable <of some other type>, the value
is cast implicitly - there's no need for explicit cast.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
A small comment at the end of the line, mentioning the debug level, is
enough - no need to repeat the entire line of code just for that.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We use tabs for indentation and once space between variable types and
variable name.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
