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staging: comedi: quatech_daqp_cs: document the 16-bit registers

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All the registers are 8-bit except for the analog output and timer
registers. For clarity, add some comments.

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>
This commit is contained in:
H Hartley Sweeten 2015-10-05 14:23:02 -07:00 • committed by Greg Kroah-Hartman
commit c06c3c953a
1 changed files with 4 additions and 2 deletions
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6
drivers/staging/comedi/drivers/quatech_daqp_cs.c
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@ -111,8 +111,10 @@
#define DAQP_CMD_SCANRATE_25KHZ DAQP_CMD_SCANRATE(2)
#define DAQP_CMD_FIFO_DATA BIT(0)
#define DAQP_AO_REG 0x08
#define DAQP_TIMER_REG 0x0a
#define DAQP_AO_REG 0x08 /* and 0x09 (16-bit) */
#define DAQP_TIMER_REG 0x0a /* and 0x0b (16-bit) */
#define DAQP_AUX_REG 0x0f
#define DAQP_AUX_TRIGGER_TTL 0x00