From af5a97344f2bfecf8421a56129d799ce5cb06754 Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Mon, 23 Feb 2015 14:57:43 -0700 Subject: [PATCH] staging: comedi: ni_at_ao: convert driver to use the comedi_8254 module The hardware supported by this driver includes an 8254 timer. This timer is not currently used, other than setting counters 1 and 2 to MODE4 to ensure that the outputs are high. For aesthetics, convert it to use the comedi_8254 module to provide support for the 8254 timer. This will make it easier to add features later. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/Kconfig | 1 + drivers/staging/comedi/drivers/ni_at_ao.c | 14 +++++++++----- 2 files changed, 10 insertions(+), 5 deletions(-) diff --git a/drivers/staging/comedi/Kconfig b/drivers/staging/comedi/Kconfig index 8d636ec11c14..20a906d49c42 100644 --- a/drivers/staging/comedi/Kconfig +++ b/drivers/staging/comedi/Kconfig @@ -477,6 +477,7 @@ config COMEDI_NI_AT_A2150 config COMEDI_NI_AT_AO tristate "NI AT-AO-6/10 EISA card support" + select COMEDI_8254 ---help--- Enable support for National Instruments AT-AO-6/10 cards diff --git a/drivers/staging/comedi/drivers/ni_at_ao.c b/drivers/staging/comedi/drivers/ni_at_ao.c index 9eeaf3c5a858..f27aa0e82234 100644 --- a/drivers/staging/comedi/drivers/ni_at_ao.c +++ b/drivers/staging/comedi/drivers/ni_at_ao.c @@ -37,7 +37,7 @@ #include "../comedidev.h" -#include "8253.h" +#include "comedi_8254.h" /* * Register map @@ -274,7 +274,6 @@ static int atao_calib_insn_write(struct comedi_device *dev, static void atao_reset(struct comedi_device *dev) { struct atao_private *devpriv = dev->private; - unsigned long timer_base = dev->iobase + ATAO_82C53_BASE; /* This is the reset sequence described in the manual */ @@ -282,9 +281,9 @@ static void atao_reset(struct comedi_device *dev) outw(devpriv->cfg1, dev->iobase + ATAO_CFG1_REG); /* Put outputs of counter 1 and counter 2 in a high state */ - i8254_set_mode(timer_base, 0, 0, I8254_MODE4 | I8254_BINARY); - i8254_set_mode(timer_base, 0, 1, I8254_MODE4 | I8254_BINARY); - i8254_write(timer_base, 0, 0, 0x0003); + comedi_8254_set_mode(dev->pacer, 0, I8254_MODE4 | I8254_BINARY); + comedi_8254_set_mode(dev->pacer, 1, I8254_MODE4 | I8254_BINARY); + comedi_8254_write(dev->pacer, 0, 0x0003); outw(ATAO_CFG2_CALLD_NOP, dev->iobase + ATAO_CFG2_REG); @@ -315,6 +314,11 @@ static int atao_attach(struct comedi_device *dev, struct comedi_devconfig *it) if (!devpriv) return -ENOMEM; + dev->pacer = comedi_8254_init(dev->iobase + ATAO_82C53_BASE, + 0, I8254_IO8, 0); + if (!dev->pacer) + return -ENOMEM; + ret = comedi_alloc_subdevices(dev, 4); if (ret) return ret; -- 2.11.0