From f0e32df3d21f048ee35c07e523e918015845d95f Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Wed, 24 Jul 2013 12:11:47 -0700 Subject: [PATCH] staging: comedi: ii_pci20kc.c: tidy up the subdevice module init Use the carrier board id to determine if a module is installed for a given subdevice. Consolidate the module init code into ii20k_init_module(). For aesthetic reasons, rename the subdevice functions to remove 'pci' from them. Signed-off-by: H Hartley Sweeten Cc: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/ii_pci20kc.c | 197 +++++++++++++++------------- 1 file changed, 104 insertions(+), 93 deletions(-) diff --git a/drivers/staging/comedi/drivers/ii_pci20kc.c b/drivers/staging/comedi/drivers/ii_pci20kc.c index 60a3bb2c..14721b2 100644 --- a/drivers/staging/comedi/drivers/ii_pci20kc.c +++ b/drivers/staging/comedi/drivers/ii_pci20kc.c @@ -83,6 +83,7 @@ options for PCI-20341M: /* * Register I/O map */ +#define II20K_MOD_OFFSET 0x100 #define II20K_ID_REG 0x00 #define II20K_ID_MOD1_EMPTY (1 << 7) #define II20K_ID_MOD2_EMPTY (1 << 6) @@ -120,8 +121,6 @@ options for PCI-20341M: #define PCI20006_ID 0xe3 #define PCI20xxx_EMPTY_ID 0xff -#define PCI20000_OFFSET 0x100 - #define PCI20006_LCHAN0 0x0d #define PCI20006_STROBE0 0x0b #define PCI20006_LCHAN1 0x15 @@ -130,7 +129,6 @@ options for PCI-20341M: #define PCI20341_INIT 0x04 #define PCI20341_REPMODE 0x00 /* single shot mode */ #define PCI20341_PACER 0x00 /* Hardware Pacer disabled */ -#define PCI20341_CHAN_NR 0x04 /* number of input channels */ #define PCI20341_CONFIG_REG 0x10 #define PCI20341_MOD_STATUS 0x01 #define PCI20341_OPT_REG 0x11 @@ -164,13 +162,13 @@ static const struct comedi_lrange range_bipolar0_025 = { } }; -static const struct comedi_lrange *pci20006_range_list[] = { +static const struct comedi_lrange *ii20k_ao_ranges[] = { &range_bipolar10, &range_unipolar10, &range_bipolar5, }; -static const struct comedi_lrange *const pci20341_ranges[] = { +static const struct comedi_lrange *const ii20k_ai_ranges[] = { &range_bipolar5, &range_bipolar0_5, &range_bipolar0_05, @@ -200,11 +198,10 @@ struct pci20xxx_private { void __iomem *ioaddr; }; -/* pci20006m */ - -static int pci20006_insn_read(struct comedi_device *dev, +static int ii20k_ao_insn_read(struct comedi_device *dev, struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) + struct comedi_insn *insn, + unsigned int *data) { union pci20xxx_subdev_private *sdp = s->private; @@ -213,9 +210,10 @@ static int pci20006_insn_read(struct comedi_device *dev, return 1; } -static int pci20006_insn_write(struct comedi_device *dev, +static int ii20k_ao_insn_write(struct comedi_device *dev, struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) + struct comedi_insn *insn, + unsigned int *data) { union pci20xxx_subdev_private *sdp = s->private; int hi, lo; @@ -246,36 +244,10 @@ static int pci20006_insn_write(struct comedi_device *dev, return 1; } -static int pci20006_init(struct comedi_device *dev, struct comedi_subdevice *s, - int opt0, int opt1) -{ - union pci20xxx_subdev_private *sdp = s->private; - - if (opt0 < 0 || opt0 > 2) - opt0 = 0; - if (opt1 < 0 || opt1 > 2) - opt1 = 0; - - sdp->pci20006.ao_range_list[0] = pci20006_range_list[opt0]; - sdp->pci20006.ao_range_list[1] = pci20006_range_list[opt1]; - - /* ao subdevice */ - s->type = COMEDI_SUBD_AO; - s->subdev_flags = SDF_WRITABLE; - s->n_chan = 2; - s->len_chanlist = 2; - s->insn_read = pci20006_insn_read; - s->insn_write = pci20006_insn_write; - s->maxdata = 0xffff; - s->range_table_list = sdp->pci20006.ao_range_list; - return 0; -} - -/* PCI20341M */ - -static int pci20341_insn_read(struct comedi_device *dev, +static int ii20k_ai_insn_read(struct comedi_device *dev, struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) + struct comedi_insn *insn, + unsigned int *data) { union pci20xxx_subdev_private *sdp = s->private; unsigned int i = 0, j = 0; @@ -328,26 +300,11 @@ static int pci20341_insn_read(struct comedi_device *dev, return i; } -static int pci20341_init(struct comedi_device *dev, struct comedi_subdevice *s, - int opt0, int opt1) +static void ii20k_ai_init(struct comedi_device *dev, + struct comedi_subdevice *s) { union pci20xxx_subdev_private *sdp = s->private; - int option; - - /* options handling */ - if (opt0 < 0 || opt0 > 3) - opt0 = 0; - sdp->pci20341.timebase = pci20341_timebase[opt0]; - sdp->pci20341.settling_time = pci20341_settling_time[opt0]; - - /* ai subdevice */ - s->type = COMEDI_SUBD_AI; - s->subdev_flags = SDF_READABLE; - s->n_chan = PCI20341_CHAN_NR; - s->len_chanlist = PCI20341_SCANLIST; - s->insn_read = pci20341_insn_read; - s->maxdata = 0xffff; - s->range_table = pci20341_ranges[opt0]; + unsigned char option; /* depends on gain, trigger, repetition mode */ option = sdp->pci20341.timebase | PCI20341_REPMODE; @@ -362,7 +319,6 @@ static int pci20341_init(struct comedi_device *dev, struct comedi_subdevice *s, writeb(sdp->pci20341.settling_time, sdp->iobase + PCI20341_SET_TIME_REG); /* trigger not implemented */ - return 0; } static void ii20k_dio_config(struct comedi_device *dev, @@ -501,16 +457,78 @@ static int ii20k_dio_insn_bits(struct comedi_device *dev, return insn->n; } +static int ii20k_init_module(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_devconfig *it) +{ + struct pci20xxx_private *devpriv = dev->private; + union pci20xxx_subdev_private *sdp; + unsigned int opt0 = it->options[(2 * s->index) + 2]; + unsigned int opt1 = it->options[(2 * s->index) + 3]; + void __iomem *iobase; + unsigned char id; + + sdp = comedi_alloc_spriv(s, sizeof(*sdp)); + if (!sdp) + return -ENOMEM; + + iobase = devpriv->ioaddr + (s->index + 1) * II20K_MOD_OFFSET; + id = readb(iobase + II20K_ID_REG); + switch (id) { + case PCI20006_ID: + if (opt0 < 0 || opt0 > 2) + opt0 = 0; + if (opt1 < 0 || opt1 > 2) + opt1 = 0; + + sdp->pci20006.iobase = iobase; + sdp->pci20006.ao_range_list[0] = ii20k_ao_ranges[opt0]; + sdp->pci20006.ao_range_list[1] = ii20k_ao_ranges[opt1]; + + /* Analog Output subdevice */ + s->type = COMEDI_SUBD_AO; + s->subdev_flags = SDF_WRITABLE; + s->n_chan = 2; + s->maxdata = 0xffff; + s->range_table_list = sdp->pci20006.ao_range_list; + s->insn_read = ii20k_ao_insn_read; + s->insn_write = ii20k_ao_insn_write; + break; + case PCI20341_ID: + if (opt0 < 0 || opt0 > 3) + opt0 = 0; + + sdp->pci20341.iobase = iobase; + sdp->pci20341.timebase = pci20341_timebase[opt0]; + sdp->pci20341.settling_time = pci20341_settling_time[opt0]; + + /* Analog Input subdevice */ + s->type = COMEDI_SUBD_AI; + s->subdev_flags = SDF_READABLE; + s->n_chan = 4; + s->maxdata = 0xffff; + s->range_table = ii20k_ai_ranges[opt0]; + s->insn_read = ii20k_ai_insn_read; + + ii20k_ai_init(dev, s); + break; + case PCI20xxx_EMPTY_ID: + default: + s->type = COMEDI_SUBD_UNUSED; + break; + } + + return 0; +} + static int pci20xxx_attach(struct comedi_device *dev, struct comedi_devconfig *it) { struct pci20xxx_private *devpriv; - union pci20xxx_subdev_private *sdp; struct comedi_subdevice *s; unsigned char id; bool has_dio; int ret; - int i; devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv)); if (!devpriv) @@ -533,38 +551,31 @@ static int pci20xxx_attach(struct comedi_device *dev, if (ret) return ret; - for (i = 0; i < 3; i++) { - s = &dev->subdevices[i]; - sdp = comedi_alloc_spriv(s, sizeof(*sdp)); - if (!sdp) - return -ENOMEM; - id = readb(devpriv->ioaddr + (i + 1) * PCI20000_OFFSET); - switch (id) { - case PCI20006_ID: - sdp->pci20006.iobase = - devpriv->ioaddr + (i + 1) * PCI20000_OFFSET; - pci20006_init(dev, s, it->options[2 * i + 2], - it->options[2 * i + 3]); - dev_info(dev->class_dev, - "PCI-20006 module in slot %d\n", i + 1); - break; - case PCI20341_ID: - sdp->pci20341.iobase = - devpriv->ioaddr + (i + 1) * PCI20000_OFFSET; - pci20341_init(dev, s, it->options[2 * i + 2], - it->options[2 * i + 3]); - dev_info(dev->class_dev, - "PCI-20341 module in slot %d\n", i + 1); - break; - default: - dev_warn(dev->class_dev, - "unknown module code 0x%02x in slot %d: module disabled\n", - id, i); /* XXX this looks like a bug! i + 1 ?? */ - /* fall through */ - case PCI20xxx_EMPTY_ID: - s->type = COMEDI_SUBD_UNUSED; - break; - } + s = &dev->subdevices[0]; + if (id & II20K_ID_MOD1_EMPTY) { + s->type = COMEDI_SUBD_UNUSED; + } else { + ret = ii20k_init_module(dev, s, it); + if (ret) + return ret; + } + + s = &dev->subdevices[1]; + if (id & II20K_ID_MOD2_EMPTY) { + s->type = COMEDI_SUBD_UNUSED; + } else { + ret = ii20k_init_module(dev, s, it); + if (ret) + return ret; + } + + s = &dev->subdevices[2]; + if (id & II20K_ID_MOD3_EMPTY) { + s->type = COMEDI_SUBD_UNUSED; + } else { + ret = ii20k_init_module(dev, s, it); + if (ret) + return ret; } /* Digital I/O subdevice */ -- 2.7.4