four subdevices:
subdevice 0 - 16 channels of 16-bit AI
subdevice 1 - 8 channels of 16-bit AO
- subdevice 2 - first 24 channels of the 48 channel of DIO (with edge-triggered interrupt support)
- subdevice 3 - last 24 channels of the 48 channel DIO (no interrupt support for this bank of channels)
+ subdevice 2 - first 24 channels of the 48 channel of DIO
+ (with edge-triggered interrupt support)
+ subdevice 3 - last 24 channels of the 48 channel DIO
+ (no interrupt support for this bank of channels)
Some notes:
Configuration Options:
[0] - I/O port base address
- [1] - IRQ (optional -- for edge-detect interrupt support only, leave out if you don't need this feature)
+ [1] - IRQ (optional -- for edge-detect interrupt support only,
+ leave out if you don't need this feature)
*/
#include <linux/interrupt.h>
#define REG_PORT4 0x4
#define REG_PORT5 0x5
#define REG_INT_PENDING 0x6
-#define REG_PAGELOCK 0x7 /* page selector register, upper 2 bits select a page
- and bits 0-5 are used to 'lock down' a particular
- port above to make it readonly. */
+#define REG_PAGELOCK 0x7 /*
+ * page selector register, upper 2 bits select
+ * a page and bits 0-5 are used to 'lock down'
+ * a particular port above to make it readonly.
+ */
#define REG_POL0 0x8
#define REG_POL1 0x9
#define REG_POL2 0xA
#define REG_PAGE_BITOFFSET 6
#define REG_LOCK_BITOFFSET 0
#define REG_PAGE_MASK (~((0x1<<REG_PAGE_BITOFFSET)-1))
-#define REG_LOCK_MASK ~(REG_PAGE_MASK)
+#define REG_LOCK_MASK (~(REG_PAGE_MASK))
#define PAGE_POL 1
#define PAGE_ENAB 2
#define PAGE_INT_ID 3
comedi_insn_fn_t ai_rinsn, ao_rinsn, ao_winsn;
};
-static const struct comedi_lrange ranges_ai =
- { 4, {RANGE(-5., 5.), RANGE(-10., 10.), RANGE(0., 5.), RANGE(0.,
- 10.)}
+static const struct comedi_lrange ranges_ai = {
+ 4, {RANGE(-5., 5.), RANGE(-10., 10.), RANGE(0., 5.), RANGE(0., 10.)}
};
-static const struct comedi_lrange ranges_ao =
- { 6, {RANGE(0., 5.), RANGE(0., 10.), RANGE(-5., 5.), RANGE(-10., 10.),
+static const struct comedi_lrange ranges_ao = {
+ 6, {RANGE(0., 5.), RANGE(0., 10.), RANGE(-5., 5.), RANGE(-10., 10.),
RANGE(-2.5, 2.5), RANGE(-2.5, 7.5)}
};
struct pcmmio_subdev_private {
union {
- /* for DIO: mapping of halfwords (bytes) in port/chanarray to iobase */
+ /* for DIO: mapping of halfwords (bytes)
+ in port/chanarray to iobase */
unsigned long iobases[PORTS_PER_SUBDEV];
/* for AI/AO */
/* The below is only used for intr subdevices */
struct {
- int asic; /* if non-negative, this subdev has an interrupt asic */
- int first_chan; /* if nonnegative, the first channel id for
- interrupts. */
- int num_asic_chans; /* the number of asic channels in this subdev
- that have interrutps */
- int asic_chan; /* if nonnegative, the first channel id with
- respect to the asic that has interrupts */
- int enabled_mask; /* subdev-relative channel mask for channels
- we are interested in */
+ /*
+ * if non-negative, this subdev has an
+ * interrupt asic
+ */
+ int asic;
+ /*
+ * if nonnegative, the first channel id for
+ * interrupts.
+ */
+ int first_chan;
+ /*
+ * the number of asic channels in this subdev
+ * that have interrutps
+ */
+ int num_asic_chans;
+ /*
+ * if nonnegative, the first channel id with
+ * respect to the asic that has interrupts
+ */
+ int asic_chan;
+ /*
+ * subdev-relative channel mask for channels
+ * we are interested in
+ */
+ int enabled_mask;
int active;
int stop_count;
int continuous;
} intr;
} dio;
struct {
- unsigned int shadow_samples[8]; /* the last unsigned int data written */
+ /* the last unsigned int data written */
+ unsigned int shadow_samples[8];
} ao;
};
};
-/* this structure is for data unique to this hardware driver. If
- several hardware drivers keep similar information in this structure,
- feel free to suggest moving the variable to the struct comedi_device struct. */
+/*
+ * this structure is for data unique to this hardware driver. If
+ * several hardware drivers keep similar information in this structure,
+ * feel free to suggest moving the variable to the struct comedi_device struct.
+ */
struct pcmmio_private {
/* stuff for DIO */
struct {
unsigned char pagelock; /* current page and lock */
- unsigned char pol[NUM_PAGED_REGS]; /* shadow of POLx registers */
- unsigned char enab[NUM_PAGED_REGS]; /* shadow of ENABx registers */
+ /* shadow of POLx registers */
+ unsigned char pol[NUM_PAGED_REGS];
+ /* shadow of ENABx registers */
+ unsigned char enab[NUM_PAGED_REGS];
int num;
unsigned long iobase;
unsigned int irq;
struct comedi_cmd *cmd);
/* some helper functions to deal with specifics of this device's registers */
-static void init_asics(struct comedi_device *dev); /* sets up/clears ASIC chips to defaults */
+/* sets up/clears ASIC chips to defaults */
+static void init_asics(struct comedi_device *dev);
static void switch_page(struct comedi_device *dev, int asic, int page);
#ifdef notused
static void lock_port(struct comedi_device *dev, int asic, int port);
devpriv->asics[asic].num = asic;
devpriv->asics[asic].iobase =
dev->iobase + 16 + asic * ASIC_IOSIZE;
- devpriv->asics[asic].irq = 0; /* this gets actually set at the end of
- this function when we
- request_irqs */
+ /*
+ * this gets actually set at the end of this function when we
+ * request_irqs
+ */
+ devpriv->asics[asic].irq = 0;
spin_lock_init(&devpriv->asics[asic].spinlock);
}
if (thisasic_chanct <
CHANS_PER_PORT * INTR_PORTS_PER_ASIC
&& subpriv->dio.intr.asic < 0) {
- /* this is an interrupt subdevice, so setup the struct */
+ /*
+ * this is an interrupt subdevice,
+ * so setup the struct
+ */
subpriv->dio.intr.asic = asic;
subpriv->dio.intr.active = 0;
subpriv->dio.intr.stop_count = 0;
chans_left -= s->n_chan;
if (!chans_left) {
- asic = 0; /* reset the asic to our first asic, to do intr subdevs */
+ /*
+ * reset the asic to our first asic,
+ * to do intr subdevs
+ */
+ asic = 0;
port = 0;
}
devpriv->asics[asic].irq = irq[asic];
}
- dev->irq = irq[0]; /* grr.. wish comedi dev struct supported multiple
- irqs.. */
+ dev->irq = irq[0]; /*
+ * grr.. wish comedi dev struct supported
+ * multiple irqs..
+ */
if (irq[0]) {
printk("irq: %u ", irq[0]);
#endif
if (write_mask_byte) {
- /* this byte has some write_bits -- so set the output lines */
- byte &= ~write_mask_byte; /* clear bits for write mask */
- byte |= ~data_byte & write_mask_byte; /* set to inverted data_byte */
+ /*
+ * this byte has some write_bits
+ * -- so set the output lines
+ */
+ /* clear bits for write mask */
+ byte &= ~write_mask_byte;
+ /* set to inverted data_byte */
+ byte |= ~data_byte & write_mask_byte;
/* Write out the new digital output state */
outb(byte, ioaddr);
}
projects / mv-sheeva.git / commitdiff