diff options
author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2013-02-04 23:43:19 (GMT) |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-05 19:18:57 (GMT) |
commit | 1801726e87787273d8473bd35a95935629a4e947 (patch) | |
tree | b5a38248fba5f1bb5fa36d1a347ef2fd75589a78 /drivers | |
parent | c12717423e1c61682fada53193813248095cba44 (diff) | |
download | linux-fsl-qoriq-1801726e87787273d8473bd35a95935629a4e947.tar.xz |
staging: comedi: quatech_daqp_cs: rename the private data struct
The private data in this driver is associated with the comedi_device
pointer not the pcmcia_device. For aesthetic reasons, rename the
private data struct from local_into_t to daqp_private.
Also, rename the local variables used for the private data from
local to devpriv as that is more common in the comedi drivers.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/staging/comedi/drivers/quatech_daqp_cs.c | 87 |
1 files changed, 40 insertions, 47 deletions
diff --git a/drivers/staging/comedi/drivers/quatech_daqp_cs.c b/drivers/staging/comedi/drivers/quatech_daqp_cs.c index 8b644f5..f91e5f5 100644 --- a/drivers/staging/comedi/drivers/quatech_daqp_cs.c +++ b/drivers/staging/comedi/drivers/quatech_daqp_cs.c @@ -61,7 +61,7 @@ Devices: [Quatech] DAQP-208 (daqp), DAQP-308 /* Maximum number of separate DAQP devices we'll allow */ #define MAX_DEV 4 -struct local_info_t { +struct daqp_private { int stop; enum { semaphore, buffer } interrupt_mode; @@ -167,26 +167,25 @@ static const struct comedi_lrange range_daqp_ai = { static int daqp_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s) { - struct local_info_t *local = dev->private; + struct daqp_private *devpriv = dev->private; - if (local->stop) + if (devpriv->stop) return -EIO; - outb(DAQP_COMMAND_STOP, dev->iobase + DAQP_COMMAND); /* flush any linguring data in FIFO - superfluous here */ /* outb(DAQP_COMMAND_RSTF, dev->iobase+DAQP_COMMAND); */ - local->interrupt_mode = semaphore; + devpriv->interrupt_mode = semaphore; return 0; } /* Interrupt handler * - * Operates in one of two modes. If local->interrupt_mode is - * 'semaphore', just signal the local->eos completion and return + * Operates in one of two modes. If devpriv->interrupt_mode is + * 'semaphore', just signal the devpriv->eos completion and return * (one-shot mode). Otherwise (continuous mode), read data in from * the card, transfer it to the buffer provided by the higher-level * comedi kernel module, and signal various comedi callback routines, @@ -195,7 +194,7 @@ static int daqp_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s) static enum irqreturn daqp_interrupt(int irq, void *dev_id) { struct comedi_device *dev = dev_id; - struct local_info_t *local = dev->private; + struct daqp_private *devpriv = dev->private; struct comedi_subdevice *s = dev->read_subdev; int loop_limit = 10000; int status; @@ -203,15 +202,12 @@ static enum irqreturn daqp_interrupt(int irq, void *dev_id) if (!dev->attached) return IRQ_NONE; - switch (local->interrupt_mode) { - + switch (devpriv->interrupt_mode) { case semaphore: - - complete(&local->eos); + complete(&devpriv->eos); break; case buffer: - while (!((status = inb(dev->iobase + DAQP_STATUS)) & DAQP_STATUS_FIFO_EMPTY)) { @@ -235,9 +231,9 @@ static enum irqreturn daqp_interrupt(int irq, void *dev_id) * and stop conversion if zero */ - if (local->count > 0) { - local->count--; - if (local->count == 0) { + if (devpriv->count > 0) { + devpriv->count--; + if (devpriv->count == 0) { daqp_ai_cancel(dev, s); s->async->events |= COMEDI_CB_EOA; break; @@ -268,15 +264,14 @@ static int daqp_ai_insn_read(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { - struct local_info_t *local = dev->private; + struct daqp_private *devpriv = dev->private; int i; int v; int counter = 10000; - if (local->stop) + if (devpriv->stop) return -EIO; - /* Stop any running conversion */ daqp_ai_cancel(dev, s); @@ -323,8 +318,8 @@ static int daqp_ai_insn_read(struct comedi_device *dev, return -1; } - init_completion(&local->eos); - local->interrupt_mode = semaphore; + init_completion(&devpriv->eos); + devpriv->interrupt_mode = semaphore; for (i = 0; i < insn->n; i++) { @@ -334,7 +329,7 @@ static int daqp_ai_insn_read(struct comedi_device *dev, /* Wait for interrupt service routine to unblock completion */ /* Maybe could use a timeout here, but it's interruptible */ - if (wait_for_completion_interruptible(&local->eos)) + if (wait_for_completion_interruptible(&devpriv->eos)) return -EINTR; data[i] = inb(dev->iobase + DAQP_FIFO); @@ -459,7 +454,7 @@ static int daqp_ai_cmdtest(struct comedi_device *dev, static int daqp_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) { - struct local_info_t *local = dev->private; + struct daqp_private *devpriv = dev->private; struct comedi_cmd *cmd = &s->async->cmd; int counter; int scanlist_start_on_every_entry; @@ -468,10 +463,9 @@ static int daqp_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) int i; int v; - if (local->stop) + if (devpriv->stop) return -EIO; - /* Stop any running conversion */ daqp_ai_cancel(dev, s); @@ -593,16 +587,16 @@ static int daqp_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) /* Save away the number of conversions we should perform, and * compute the FIFO threshold (in bytes, not samples - that's - * why we multiple local->count by 2 = sizeof(sample)) + * why we multiple devpriv->count by 2 = sizeof(sample)) */ if (cmd->stop_src == TRIG_COUNT) { - local->count = cmd->stop_arg * cmd->scan_end_arg; - threshold = 2 * local->count; + devpriv->count = cmd->stop_arg * cmd->scan_end_arg; + threshold = 2 * devpriv->count; while (threshold > DAQP_FIFO_SIZE * 3 / 4) threshold /= 2; } else { - local->count = -1; + devpriv->count = -1; threshold = DAQP_FIFO_SIZE / 2; } @@ -644,7 +638,7 @@ static int daqp_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) return -1; } - local->interrupt_mode = buffer; + devpriv->interrupt_mode = buffer; /* Start conversion */ outb(DAQP_COMMAND_ARM | DAQP_COMMAND_FIFO_DATA, @@ -659,11 +653,11 @@ static int daqp_ao_insn_write(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { - struct local_info_t *local = dev->private; + struct daqp_private *devpriv = dev->private; int d; unsigned int chan; - if (local->stop) + if (devpriv->stop) return -EIO; chan = CR_CHAN(insn->chanspec); @@ -686,9 +680,9 @@ static int daqp_di_insn_read(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { - struct local_info_t *local = dev->private; + struct daqp_private *devpriv = dev->private; - if (local->stop) + if (devpriv->stop) return -EIO; data[0] = inb(dev->iobase + DAQP_DIGITAL_IO); @@ -702,9 +696,9 @@ static int daqp_do_insn_write(struct comedi_device *dev, struct comedi_subdevice *s, struct comedi_insn *insn, unsigned int *data) { - struct local_info_t *local = dev->private; + struct daqp_private *devpriv = dev->private; - if (local->stop) + if (devpriv->stop) return -EIO; outw(data[0] & 0xf, dev->iobase + DAQP_DIGITAL_IO); @@ -716,17 +710,16 @@ static int daqp_auto_attach(struct comedi_device *dev, unsigned long context) { struct pcmcia_device *link = comedi_to_pcmcia_dev(dev); - struct local_info_t *local; + struct daqp_private *devpriv; struct comedi_subdevice *s; int ret; dev->board_name = dev->driver->driver_name; - /* Allocate space for private device-specific data */ - local = kzalloc(sizeof(*local), GFP_KERNEL); - if (!local) + devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL); + if (!devpriv) return -ENOMEM; - dev->private = local; + dev->private = devpriv; link->config_flags |= CONF_AUTO_SET_IO | CONF_ENABLE_IRQ; ret = comedi_pcmcia_enable(dev); @@ -790,11 +783,11 @@ static struct comedi_driver driver_daqp = { static int daqp_cs_suspend(struct pcmcia_device *link) { struct comedi_device *dev = link->priv; - struct local_info_t *local = dev ? dev->private : NULL; + struct daqp_private *devpriv = dev ? dev->private : NULL; /* Mark the device as stopped, to block IO until later */ - if (local) - local->stop = 1; + if (devpriv) + devpriv->stop = 1; return 0; } @@ -802,10 +795,10 @@ static int daqp_cs_suspend(struct pcmcia_device *link) static int daqp_cs_resume(struct pcmcia_device *link) { struct comedi_device *dev = link->priv; - struct local_info_t *local = dev ? dev->private : NULL; + struct daqp_private *devpriv = dev ? dev->private : NULL; - if (local) - local->stop = 0; + if (devpriv) + devpriv->stop = 0; return 0; } |