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Date: Mon, 4 Aug 2014 12:14:28 +0100
From: Ian Abbott <abbotti@....co.uk>
To: driverdev-devel@...uxdriverproject.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Ian Abbott <abbotti@....co.uk>,
H Hartley Sweeten <hartleys@...ionengravers.com>,
linux-kernel@...r.kernel.org
Subject: [PATCH 15/18 v2] staging: comedi: amplc_pci224: put board indices in PCI driver_data
The `driver_data` member value from the matched entry of the PCI module
device table `amplc_pci224_pci_table[]` is passed through to our comedi
"auto_attach" handler, `pci224_auto_attach()`. Use that to index
directly into our static board data array `pci224_boards[]` instead of
calling `pci224_find_pci_board()` to search for the entry matching the
PCI device ID. That function can be removed. The `devid` and `model`
members of `struct pci224_board` are no longer needed either and can be
removed.
Signed-off-by: Ian Abbott <abbotti@....co.uk>
---
v2: Use C99 syntax for amplc_pci224_pci_table[] initializer. Thanks to
Hartley for finding that!
---
drivers/staging/comedi/drivers/amplc_pci224.c | 52 ++++++++++-----------------
1 file changed, 18 insertions(+), 34 deletions(-)
diff --git a/drivers/staging/comedi/drivers/amplc_pci224.c b/drivers/staging/comedi/drivers/amplc_pci224.c
index bcef9e6..675bbe8 100644
--- a/drivers/staging/comedi/drivers/amplc_pci224.c
+++ b/drivers/staging/comedi/drivers/amplc_pci224.c
@@ -351,8 +351,6 @@ enum pci224_model { pci224_model, pci234_model };
struct pci224_board {
const char *name;
- unsigned short devid;
- enum pci224_model model;
unsigned int ao_chans;
unsigned int ao_bits;
const struct comedi_lrange *ao_range;
@@ -361,20 +359,16 @@ struct pci224_board {
};
static const struct pci224_board pci224_boards[] = {
- {
+ [pci224_model] = {
.name = "pci224",
- .devid = PCI_DEVICE_ID_AMPLICON_PCI224,
- .model = pci224_model,
.ao_chans = 16,
.ao_bits = 12,
.ao_range = &range_pci224,
.ao_hwrange = &hwrange_pci224[0],
.ao_range_check = &range_check_pci224[0],
},
- {
+ [pci234_model] = {
.name = "pci234",
- .devid = PCI_DEVICE_ID_AMPLICON_PCI234,
- .model = pci234_model,
.ao_chans = 4,
.ao_bits = 16,
.ao_range = &range_pci234,
@@ -1071,20 +1065,6 @@ static irqreturn_t pci224_interrupt(int irq, void *d)
}
/*
- * This function looks for a board matching the supplied PCI device.
- */
-static const struct pci224_board
-*pci224_find_pci_board(struct pci_dev *pci_dev)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(pci224_boards); i++)
- if (pci_dev->device == pci224_boards[i].devid)
- return &pci224_boards[i];
- return NULL;
-}
-
-/*
* Common part of attach and auto_attach.
*/
static int pci224_attach_common(struct comedi_device *dev,
@@ -1162,8 +1142,6 @@ static int pci224_attach_common(struct comedi_device *dev,
s->cancel = pci224_ao_cancel;
s->munge = pci224_ao_munge;
- dev->board_name = thisboard->name;
-
if (irq) {
ret = request_irq(irq, pci224_interrupt, IRQF_SHARED,
dev->board_name, dev);
@@ -1179,23 +1157,29 @@ static int pci224_attach_common(struct comedi_device *dev,
}
static int
-pci224_auto_attach(struct comedi_device *dev, unsigned long context_unused)
+pci224_auto_attach(struct comedi_device *dev, unsigned long context_model)
{
struct pci_dev *pci_dev = comedi_to_pci_dev(dev);
+ const struct pci224_board *thisboard = NULL;
struct pci224_private *devpriv;
- dev_info(dev->class_dev, "attach pci %s\n", pci_name(pci_dev));
+ if (context_model < ARRAY_SIZE(pci224_boards))
+ thisboard = &pci224_boards[context_model];
+ if (!thisboard || !thisboard->name) {
+ dev_err(dev->class_dev,
+ "amplc_pci224: BUG! cannot determine board type!\n");
+ return -EINVAL;
+ }
+ dev->board_ptr = thisboard;
+ dev->board_name = thisboard->name;
+
+ dev_info(dev->class_dev, "amplc_pci224: attach pci %s - %s\n",
+ pci_name(pci_dev), dev->board_name);
devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
if (!devpriv)
return -ENOMEM;
- dev->board_ptr = pci224_find_pci_board(pci_dev);
- if (dev->board_ptr == NULL) {
- dev_err(dev->class_dev,
- "BUG! cannot determine board type!\n");
- return -EINVAL;
- }
return pci224_attach_common(dev, pci_dev);
}
@@ -1231,8 +1215,8 @@ static int amplc_pci224_pci_probe(struct pci_dev *dev,
}
static const struct pci_device_id amplc_pci224_pci_table[] = {
- { PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI224) },
- { PCI_DEVICE(PCI_VENDOR_ID_AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI234) },
+ { PCI_VDEVICE(AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI224), pci224_model },
+ { PCI_VDEVICE(AMPLICON, PCI_DEVICE_ID_AMPLICON_PCI234), pci234_model },
{ 0 }
};
MODULE_DEVICE_TABLE(pci, amplc_pci224_pci_table);
--
2.0.0
--
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