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staging: comedi: daqboard2000: use request_firmware()

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This driver requires loading a firmware file for the cpld. This
is currently being done by passing the firmware data using the
COMEDI_DEVCONFIG ioctl through the attach() hook in the driver.
This does not work for auto-configured PCI devices due to the
firmware loading options not being set in the comedi_devconfig
parameter passed to the driver.

Change the driver so it gets the firmware using request_firmware()
and ignore any firmware options passed in the comedi_devconfig.

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>
This commit is contained in:
H Hartley Sweeten
2012-09-18 18:46:57 -07:00
committed by Greg Kroah-Hartman
parent ad375f7758
commit 63ad597e2d
1 changed files with 25 additions and 16 deletions
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41
drivers/staging/comedi/drivers/daqboard2000.c
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@@ -117,9 +117,12 @@ Configuration options:
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/firmware.h>
#include "8255.h"
#define DAQBOARD2000_FIRMWARE "daqboard2000_firmware.bin"
#define PCI_VENDOR_ID_IOTECH 0x1616
#define DAQBOARD2000_SUBSYSTEM_IDS2 0x0002 /* Daqboard/2000 - 2 Dacs */
@@ -547,14 +550,14 @@ static int daqboard2000_writeCPLD(struct comedi_device *dev, int data)
}
static int initialize_daqboard2000(struct comedi_device *dev,
unsigned char *cpld_array, int len)
const u8 *cpld_array, size_t len)
{
struct daqboard2000_private *devpriv = dev->private;
int result = -EIO;
/* Read the serial EEPROM control register */
int secr;
int retry;
int i;
size_t i;
/* Check to make sure the serial eeprom is present on the board */
secr = readl(devpriv->plx + 0x6c);
@@ -604,6 +607,22 @@ static int initialize_daqboard2000(struct comedi_device *dev,
return result;
}
static int daqboard2000_upload_firmware(struct comedi_device *dev)
{
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
const struct firmware *fw;
int ret;
ret = request_firmware(&fw, DAQBOARD2000_FIRMWARE, &pcidev->dev);
if (ret)
return ret;
ret = initialize_daqboard2000(dev, fw->data, fw->size);
release_firmware(fw);
return ret;
}
static void daqboard2000_adcStopDmaTransfer(struct comedi_device *dev)
{
/* printk("Implement: daqboard2000_adcStopDmaTransfer\n");*/
@@ -747,8 +766,6 @@ static int daqboard2000_attach(struct comedi_device *dev,
struct pci_dev *pcidev;
struct comedi_subdevice *s;
resource_size_t pci_base;
void *aux_data;
unsigned int aux_len;
int result;
result = alloc_private(dev, sizeof(*devpriv));
@@ -790,18 +807,10 @@ static int daqboard2000_attach(struct comedi_device *dev,
printk("Interrupt before is: %x\n", interrupt);
*/
aux_data = comedi_aux_data(it->options, 0);
aux_len = it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH];
if (aux_data && aux_len) {
result = initialize_daqboard2000(dev, aux_data, aux_len);
} else {
dev_dbg(dev->class_dev,
"no FPGA initialization code, aborting\n");
result = -EIO;
}
result = daqboard2000_upload_firmware(dev);
if (result < 0)
goto out;
return result;
daqboard2000_initializeAdc(dev);
daqboard2000_initializeDac(dev);
/*
@@ -835,7 +844,6 @@ static int daqboard2000_attach(struct comedi_device *dev,
result = subdev_8255_init(dev, s, daqboard2000_8255_cb,
(unsigned long)(devpriv->daq + dioP2ExpansionIO8Bit));
out:
return result;
}
@@ -896,3 +904,4 @@ module_comedi_pci_driver(daqboard2000_driver, daqboard2000_pci_driver);
MODULE_AUTHOR("Comedi http://www.comedi.org");
MODULE_DESCRIPTION("Comedi low-level driver");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(DAQBOARD2000_FIRMWARE);