diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2013-12-10 02:30:55 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-17 22:02:12 +0400 |
| commit | 0cc4f3bd5f562a391375a2187e411b6a037b29ce (patch) | |
| tree | 9a8c5d5a924075df4fc01f184e11f7abb1caf353 /drivers/staging/comedi | |
| parent | 8657fed873905aaf4267e96c8381ece77927caf0 (diff) | |
| download | linux-0cc4f3bd5f562a391375a2187e411b6a037b29ce.tar.xz | |
staging: comedi: pcmmio: tidy up init_asics()
Rename this function so it has namespace associated with the driver.
The board supported by this driver only has one WinSystems WS16C48 asic
on it that handles the digital i/o. Remove the unnecessary for () loop
that would reset multiple asics.
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>
Diffstat (limited to 'drivers/staging/comedi')
| -rw-r--r-- | drivers/staging/comedi/drivers/pcmmio.c | 51 |
1 files changed, 23 insertions, 28 deletions
diff --git a/drivers/staging/comedi/drivers/pcmmio.c b/drivers/staging/comedi/drivers/pcmmio.c index 3e3f4c9b8877..af06062c15d3 100644 --- a/drivers/staging/comedi/drivers/pcmmio.c +++ b/drivers/staging/comedi/drivers/pcmmio.c @@ -370,35 +370,30 @@ static void switch_page(struct comedi_device *dev, int page) outb(page << REG_PAGE_BITOFFSET, devpriv->asic_iobase + REG_PAGELOCK); } -static void init_asics(struct comedi_device *dev) -{ /* sets up an - ASIC chip to defaults */ +static void pcmmio_reset(struct comedi_device *dev) +{ struct pcmmio_private *devpriv = dev->private; - int asic; - - for (asic = 0; asic < 1; ++asic) { - int port, page; - unsigned long baseaddr = devpriv->asic_iobase; - - switch_page(dev, 0); /* switch back to page 0 */ - - /* first, clear all the DIO port bits */ - for (port = 0; port < PORTS_PER_ASIC; ++port) - outb(0, baseaddr + REG_PORT0 + port); - - /* Next, clear all the paged registers for each page */ - for (page = 1; page < NUM_PAGES; ++page) { - int reg; - /* now clear all the paged registers */ - switch_page(dev, page); - for (reg = FIRST_PAGED_REG; - reg < FIRST_PAGED_REG + NUM_PAGED_REGS; ++reg) - outb(0, baseaddr + reg); - } - - /* switch back to default page 0 */ - switch_page(dev, 0); + unsigned long baseaddr = devpriv->asic_iobase; + int port, page; + + switch_page(dev, 0); /* switch back to page 0 */ + + /* first, clear all the DIO port bits */ + for (port = 0; port < PORTS_PER_ASIC; ++port) + outb(0, baseaddr + REG_PORT0 + port); + + /* Next, clear all the paged registers for each page */ + for (page = 1; page < NUM_PAGES; ++page) { + int reg; + /* now clear all the paged registers */ + switch_page(dev, page); + for (reg = FIRST_PAGED_REG; + reg < FIRST_PAGED_REG + NUM_PAGED_REGS; ++reg) + outb(0, baseaddr + reg); } + + /* switch back to default page 0 */ + switch_page(dev, 0); } static void pcmmio_stop_intr(struct comedi_device *dev, @@ -1073,7 +1068,7 @@ static int pcmmio_attach(struct comedi_device *dev, struct comedi_devconfig *it) } - init_asics(dev); /* clear out all the registers, basically */ + pcmmio_reset(dev); if (it->options[1]) { ret = request_irq(it->options[1], interrupt_pcmmio, 0, |