From 013f230c4f2622cbbc736c50223b49bced024655 Mon Sep 17 00:00:00 2001 From: Daniel Patrick Johnson Date: Wed, 14 Oct 2009 02:04:24 +0000 Subject: [PATCH] Staging: comedi: pcmmio: more coding style cleanup Signed-off-by: Daniel Patrick Johnson Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/pcmmio.c | 110 +++++++++++++++++------- 1 file changed, 77 insertions(+), 33 deletions(-) diff --git a/drivers/staging/comedi/drivers/pcmmio.c b/drivers/staging/comedi/drivers/pcmmio.c index c764b28fb319..35ba93989a36 100644 --- a/drivers/staging/comedi/drivers/pcmmio.c +++ b/drivers/staging/comedi/drivers/pcmmio.c @@ -713,9 +713,11 @@ static int pcmmio_dio_insn_config(struct comedi_device *dev, byte &= ~(1 << bit_no); /**< set input channel to '0' */ - /* write out byte -- this is the only time we actually affect the - hardware as all channels are implicitly output -- but input - channels are set to float-high */ + /* + * write out byte -- this is the only time we actually affect + * the hardware as all channels are implicitly output + * -- but input channels are set to float-high + */ outb(byte, ioaddr); /* save to io_bits */ @@ -769,8 +771,8 @@ static void init_asics(struct comedi_device *dev) outb(0xff, baseaddr + REG_ENAB0); */ /* END DEBUG */ - switch_page(dev, asic, 0); /* switch back to default page 0 */ - + /* switch back to default page 0 */ + switch_page(dev, asic, 0); } } @@ -849,7 +851,10 @@ static irqreturn_t interrupt_pcmmio(int irq, void *d) REG_INT_ID0 + port); if (io_lines_with_edges) - /* clear pending interrupt */ + /* + * clear pending + * interrupt + */ outb(0, iobase + REG_INT_ID0 + port); @@ -868,14 +873,21 @@ static irqreturn_t interrupt_pcmmio(int irq, void *d) if (triggered) { struct comedi_subdevice *s; - /* TODO here: dispatch io lines to subdevs with commands.. */ + /* + * TODO here: dispatch io lines to subdevs + * with commands.. + */ printk ("PCMMIO DEBUG: got edge detect interrupt %d asic %d which_chans: %06x\n", irq, asic, triggered); for (s = dev->subdevices + 2; s < dev->subdevices + dev->n_subdevices; ++s) { - if (subpriv->dio.intr.asic == asic) { /* this is an interrupt subdev, and it matches this asic! */ + /* + * this is an interrupt subdev, + * and it matches this asic! + */ + if (subpriv->dio.intr.asic == asic) { unsigned long flags; unsigned oldevents; @@ -910,9 +922,8 @@ static irqreturn_t interrupt_pcmmio(int irq, void *d) n < len; n++) { ch = CR_CHAN(s->async->cmd.chanlist[n]); - if (mytrig & (1U << ch)) { + if (mytrig & (1U << ch)) val |= (1U << n); - } } /* Write the scan to the buffer. */ if (comedi_buf_put(s->async, ((short *)&val)[0]) @@ -920,8 +931,7 @@ static irqreturn_t interrupt_pcmmio(int irq, void *d) comedi_buf_put (s->async, ((short *) - &val)[1])) - { + &val)[1])) { s->async->events |= (COMEDI_CB_BLOCK | COMEDI_CB_EOS); } else { /* Overflow! Stop acquisition!! */ @@ -1024,9 +1034,16 @@ static int pcmmio_start_intr(struct comedi_device *dev, 1) << subpriv->dio.intr.first_chan; subpriv->dio.intr.enabled_mask = bits; - { /* the below code configures the board to use a specific IRQ from 0-15. */ + { + /* + * the below code configures the board + * to use a specific IRQ from 0-15. + */ unsigned char b; - /* set resource enable register to enable IRQ operation */ + /* + * set resource enable register + * to enable IRQ operation + */ outb(1 << 4, dev->iobase + 3); /* set bits 0-3 of b to the irq number from 0-15 */ b = dev->irq & ((1 << 4) - 1); @@ -1080,14 +1097,12 @@ pcmmio_inttrig_start_intr(struct comedi_device *dev, struct comedi_subdevice *s, spin_lock_irqsave(&subpriv->dio.intr.spinlock, flags); s->async->inttrig = 0; - if (subpriv->dio.intr.active) { + if (subpriv->dio.intr.active) event = pcmmio_start_intr(dev, s); - } spin_unlock_irqrestore(&subpriv->dio.intr.spinlock, flags); - if (event) { + if (event) comedi_event(dev, s); - } return 1; } @@ -1129,9 +1144,8 @@ static int pcmmio_cmd(struct comedi_device *dev, struct comedi_subdevice *s) } spin_unlock_irqrestore(&subpriv->dio.intr.spinlock, flags); - if (event) { + if (event) comedi_event(dev, s); - } return 0; } @@ -1179,17 +1193,32 @@ static int ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, short sample, adc_adjust = 0; if (chan > 7) - chan -= 8, iooffset = 4; /* use the second dword for channels > 7 */ + chan -= 8, iooffset = 4; /* + * use the second dword + * for channels > 7 + */ if (aref != AREF_DIFF) { aref = AREF_GROUND; - command_byte |= 1 << 7; /* set bit 7 to indicate single-ended */ + command_byte |= 1 << 7; /* + * set bit 7 to indicate + * single-ended + */ } if (range < 2) - adc_adjust = 0x8000; /* bipolar ranges (-5,5 .. -10,10 need to be adjusted -- that is.. they need to wrap around by adding 0x8000 */ + adc_adjust = 0x8000; /* + * bipolar ranges + * (-5,5 .. -10,10 need to be + * adjusted -- that is.. they + * need to wrap around by + * adding 0x8000 + */ if (chan % 2) { - command_byte |= 1 << 6; /* odd-numbered channels have bit 6 set */ + command_byte |= 1 << 6; /* + * odd-numbered channels + * have bit 6 set + */ } /* select the channel, bits 4-5 == chan/2 */ @@ -1199,16 +1228,22 @@ static int ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, command_byte |= (range & 0x3) << 2; /* need to do this twice to make sure mux settled */ - outb(command_byte, iobase + iooffset + 2); /* chan/range/aref select */ + /* chan/range/aref select */ + outb(command_byte, iobase + iooffset + 2); - adc_wait_ready(iobase + iooffset); /* wait for the adc to say it finised the conversion */ + /* wait for the adc to say it finised the conversion */ + adc_wait_ready(iobase + iooffset); - outb(command_byte, iobase + iooffset + 2); /* select the chan/range/aref AGAIN */ + /* select the chan/range/aref AGAIN */ + outb(command_byte, iobase + iooffset + 2); adc_wait_ready(iobase + iooffset); - sample = inb(iobase + iooffset + 0); /* read data lo byte */ - sample |= inb(iobase + iooffset + 1) << 8; /* read data hi byte */ + /* read data lo byte */ + sample = inb(iobase + iooffset + 0); + + /* read data hi byte */ + sample |= inb(iobase + iooffset + 1) << 8; sample += adc_adjust; /* adjustment .. munge data */ data[n] = sample; } @@ -1270,15 +1305,24 @@ static int ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s, wait_dac_ready(iobase + iooffset); - outb(data[n] & 0xff, iobase + iooffset + 0); /* low order byte */ - outb((data[n] >> 8) & 0xff, iobase + iooffset + 1); /* high order byte */ - command_byte = 0x70 | (chan << 1); /* set bit 4 of command byte to indicate data is loaded and trigger conversion */ + /* low order byte */ + outb(data[n] & 0xff, iobase + iooffset + 0); + + /* high order byte */ + outb((data[n] >> 8) & 0xff, iobase + iooffset + 1); + + /* + * set bit 4 of command byte to indicate + * data is loaded and trigger conversion + */ + command_byte = 0x70 | (chan << 1); /* trigger converion */ outb(command_byte, iobase + iooffset + 2); wait_dac_ready(iobase + iooffset); - subpriv->ao.shadow_samples[chan] = data[n]; /* save to shadow register for ao_rinsn */ + /* save to shadow register for ao_rinsn */ + subpriv->ao.shadow_samples[chan] = data[n]; } } return n;