- 18 Jun, 2016 40 commits
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H Hartley Sweeten authored
The interrupt support available on this board is pretty limited but its simple enough to give basic async command support. This allows reading a single channel continuously using either the internal or an external clock to trigger each conversion. The command can also use the external trigger input to start the command if the external clock is being used for conversions. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Shyam Saini authored
Fixed following checkpatch.pl warnings WARNING: Prefer WRITE_ONCE(<FOO>, <BAR>) over ACCESS_ONCE(<FOO>) = <BAR> WARNING: Prefer READ_ONCE(<FOO>) over ACCESS_ONCE(<FOO>) Signed-off-by: Shyam Saini <mayhs11saini@gmail.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Change the MODULE_DESCRIPTION to something more useful than the generic "Comedi low-level driver". Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Rename this array so it has namespace associated with the driver. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
This define is not used by the driver. Remove it. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Add some whitespace to the analog output subdevice initialization and rename the (*insn_read) function. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
The A/D ranges are not programmable but the gain is. Currently this driver uses a configuration option to select the comedi_lrange that will be used for the analog input subdevice. This requires that the user makes sure the correct option value is used. The user space library uses the range information to convert between raw values and physical units. If the user passed an incorrect option when attaching the driver the conversion will be incorrect. A previous patch allowed the gain to be set based on the chanspec range. Prior to that the gain was always set to 1 so any conversion with a gain that is not 1 would be incorrect anyway. Simplify the analog input ranges by providing a range_table for the pgh and pgl boards that contain all the possible range/gain options. The user can then select the correct range (and gain) when converting values or reading the analog inputs. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
The remaining members of the private data are not used by the driver. Remove it and the allocation. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
The analog inputs are confgured with jumpers on the board to be: * 16 single-ended inputs * 8 differential inputs * 16 pseudo-differential inputs (common ground) Simplify the handling of this configuration option and properly set the subdev_flags based on the selected input mode. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Add some whitespace to the analog output subdevice initialization. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
The D/A ranges are not programmable. Currently this driver uses some configuration options to select the comedi_lrange for each channel. This is a bit messy and it requires the user to make sure the correct option value is used. The range information isn't used by the driver. The user space library uses it to convert between raw data values and physical units. If the user passed an incorrect option when attaching the driver the conversion will be incorrect. Simplify the analog output ranges by providing a range_table that contains all the possible output ranges. The user can then select the correct range when converting values. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Add some whitespace to the digital input and output subdevice initialization. Reorder the initialization a bit. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
This register currently is not being used. For aesthetics, cleanup the define and the comment about the frequency control. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
The digital input and outputs are separate ports even though they share the same register offset. For aesthetics, define then separately and remove the redundant information in the comment. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Cleanup the defines for these registers and and remove the redundant information in the comment. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Cleanup the defines for these registers and and remove the redundant information in the comment. Tidy up the reading of the data registers in the (*insn_read). Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Cleanup the defines for this register and its bits and remove the redundant information in the comment. Make the (*insn_read) use the range to set the gain bits correctly. Currently the gain is always set to 1. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Cleanup the defines for this register and its bits and remove the redundant information in the comment. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
There is no reason the (*attach) should be trying to read an analog input sample. Remove this disabled code. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
The configuration options are listed in the comedi comment block. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Fix the checkpatch.pl issue: WARNING: Block comments use * on subsequent lines Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Nikita Eshkeev authored
This patch fixed the checkpatch.pl warning: WARNING: Prefer 'unsigned int' to bare use of 'unsigned' Signed-off-by: Nikita Eshkeev <kastolom@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Change the MODULE_DESCRIPTION to something more usefull than the generic "Comedi low-level driver". Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
For aesthetics, remove the redundant '_struct' suffix. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
For aesthetics, convert this function into a subdevice (*munge) function and let the comedi core handle the munging. Add a comment about why the data needs to be munged. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
The (*insn_read) functions return the number of data values read. The 'n' value is correct but for clarity change the return to 'insn->n'. For aesthetics, change the 'n' loop variable name to 'i'. That's more common in comedi drivers. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
For aesthetics, init the comedi_subdevice, comedi_async, and comedi_cmd pointers when the local variables are declared. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
The configuration options are listed in the comedi comment block. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
For aesthetics, move these after the register map defines and rename the FIFO_SIZE define. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
For aesthetics, rename these defines. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Add some whitespace to the subdevice init and rename the support function. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
The (*insn_bits) for a digital input subdevice only needs to return the state of the inputs in data[1]. Remove the cruft. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Add some whitespace to the subdevice init and rename the support function. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Add some whitespace to the subdevice init and rename the support functions. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Introduce a helper function to handle writing the channel/gain data to the queue for single channel reads, (*insn_read), and multi-channel scans, (*do_cmd). Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Rename these defines. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Rename these defines and use the BIT macro to define the bits. Define some macros for the multi-bit fields in the register. Rename the private data 'control_state' member to better match the register name. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
The comedi core will only call the (*insn_read) and (*do_cmd) functions if the subdevice is not "busy". All async commands are terminated by a (*cancel) operation which clears the INTE and PACER_MASK bits in the interrupt control register. These bits are also cleared when the driver first attaches. There is no need for the (*insn_read) or (*do_cmd) to duplicate the cancel. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
Rename this define and use a consistent comment throughout the code. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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H Hartley Sweeten authored
The digtial inputs and outputs are read/written using the same register offset but they are different logical registers. Physically they are the same register with the hi 4 bits returning the inputs and the lo 4 bits driving the outputs. For aesthetics, use two different defines for the registers. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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