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Commit de35c941 authored by Ian Abbott's avatar Ian Abbott Committed by Greg Kroah-Hartman
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staging: comedi: ni_65xx: add ni_65xx_num_ports() 



Add a function to return the total number of digital I/O, digital input,
and digital output ports on the board.  Each port has 8 channels (bits).

Signed-off-by: default avatarIan Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 0be013e3

drivers/staging/comedi/drivers/ni_65xx.c

+8 −6
Original line number Diff line number Diff line
@@ -296,17 +296,19 @@ struct ni_65xx_private { 
	void __iomem *mmio;

};



static void ni_65xx_disable_input_filters(struct comedi_device *dev)

static unsigned int ni_65xx_num_ports(struct comedi_device *dev)

{

	const struct ni_65xx_board *board = comedi_board(dev);



	return board->num_dio_ports + board->num_di_ports + board->num_do_ports;

}



static void ni_65xx_disable_input_filters(struct comedi_device *dev)

{

	struct ni_65xx_private *devpriv = dev->private;

	unsigned num_ports;

	unsigned int num_ports = ni_65xx_num_ports(dev);

	int i;



	num_ports = board->num_dio_ports +

		    board->num_di_ports +

		    board->num_do_ports;



	/* disable input filtering on all ports */

	for (i = 0; i < num_ports; ++i)

		writeb(0x00, devpriv->mmio + NI_65XX_FILTER_ENA(i));