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Commit ef0af0ca authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
Browse files

staging: comedi: dt2811: tidy up Timer/Counter register defines 



This register currently is not being used. For aesthetics, cleanup the
define and the comment about the frequency control.

Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: default avatarIan Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 3d6dc783

drivers/staging/comedi/drivers/dt2811.c

+17 −28
Original line number Diff line number Diff line
@@ -76,6 +76,23 @@ 
#define DT2811_DI_REG			0x06	/* r   Digital Input Port 0 */

#define DT2811_DO_REG			0x06	/* w   Digital Output Port 1 */



/*

 * Timer frequency control:

 *   DT2811_TMRCTR_MANTISSA	DT2811_TMRCTR_EXPONENT

 *   val  divisor  frequency	val  multiply divisor/divide frequency by

 *    0      1      600 kHz	 0   1

 *    1     10       60 kHz	 1   10

 *    2      2      300 kHz	 2   100

 *    3      3      200 kHz	 3   1000

 *    4      4      150 kHz	 4   10000

 *    5      5      120 kHz	 5   100000

 *    6      6      100 kHz	 6   1000000

 *    7     12       50 kHz	 7   10000000

 */

#define DT2811_TMRCTR_REG		0x07	/* r/w  Timer/Counter */

#define DT2811_TMRCTR_MANTISSA(x)	(((x) & 0x7) << 3)

#define DT2811_TMRCTR_EXPONENT(x)	(((x) & 0x7) << 0)



static const struct comedi_lrange range_dt2811_pgh_ai_5_unipolar = {

	4, {

		UNI_RANGE(5),
@@ -130,36 +147,8 @@ static const struct comedi_lrange range_dt2811_pgl_ai_5_bipolar = { 
	}

};



/*

   0x07 TMRCTR (R/W) Timer/Counter Register

   bits 6,7 - reserved

   bits 5-3 - Timer frequency control (mantissa)

   543  divisor  freqency (kHz)

   000  1        600

   001  10       60

   010  2        300

   011  3        200

   100  4        150

   101  5        120

   110  6        100

   111  12       50

   bits 2-0 - Timer frequency control (exponent)

   210  multiply divisor/divide frequency by

   000  1

   001  10

   010  100

   011  1000

   100  10000

   101  100000

   110  1000000

   111  10000000



 */



#define TIMEOUT 10000



#define DT2811_TMRCTR 7



struct dt2811_board {

	const char *name;

	const struct comedi_lrange *bip_5;