UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

[POWERPC] Xilinx: hwicap: Use fixed device major. 

Major 259 has been assigned by lanana.  Use it.  Also, publish
/dev/icap[0-k] as the device entries, and register platform devices
named 'icap' to be consistent.

Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
This commit is contained in:
Stephen Neuendorffer 2008-03-18 04:36:32 +11:00 committed by Josh Boyer
parent 4c58f8fe2e
commit ac64673449
1 changed files with 14 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/char/xilinx_hwicap/xilinx_hwicap.c
View File

@ -36,7 +36,7 @@
*****************************************************************************/
/*
* This is the code behind /dev/xilinx_icap -- it allows a user-space
* This is the code behind /dev/icap* -- it allows a user-space
* application to use the Xilinx ICAP subsystem.
*
* The following operations are possible:
@ -67,7 +67,7 @@
* user-space application code that uses this device. The simplest
* way to use this interface is simply:
*
* cp foo.bit /dev/xilinx_icap
* cp foo.bit /dev/icap0
*
* Note that unless foo.bit is an appropriately constructed partial
* bitstream, this has a high likelyhood of overwriting the design
@ -105,18 +105,14 @@
#include "buffer_icap.h"
#include "fifo_icap.h"
#define DRIVER_NAME "xilinx_icap"
#define DRIVER_NAME "icap"
#define HWICAP_REGS (0x10000)
/* dynamically allocate device number */
static int xhwicap_major;
static int xhwicap_minor;
#define XHWICAP_MAJOR 259
#define XHWICAP_MINOR 0
#define HWICAP_DEVICES 1
module_param(xhwicap_major, int, S_IRUGO);
module_param(xhwicap_minor, int, S_IRUGO);
/* An array, which is set to true when the device is registered. */
static bool probed_devices[HWICAP_DEVICES];
static struct mutex icap_sem;
@ -605,7 +601,7 @@ static int __devinit hwicap_setup(struct device *dev, int id,
probed_devices[id] = 1;
mutex_unlock(&icap_sem);
devt = MKDEV(xhwicap_major, xhwicap_minor + id);
devt = MKDEV(XHWICAP_MAJOR, XHWICAP_MINOR + id);
drvdata = kzalloc(sizeof(struct hwicap_drvdata), GFP_KERNEL);
if (!drvdata) {
@ -710,7 +706,7 @@ static int __devexit hwicap_remove(struct device *dev)
dev_set_drvdata(dev, NULL);
mutex_lock(&icap_sem);
probed_devices[MINOR(dev->devt)-xhwicap_minor] = 0;
probed_devices[MINOR(dev->devt)-XHWICAP_MINOR] = 0;
mutex_unlock(&icap_sem);
return 0; /* success */
}
@ -850,23 +846,12 @@ static int __init hwicap_module_init(void)
icap_class = class_create(THIS_MODULE, "xilinx_config");
mutex_init(&icap_sem);
if (xhwicap_major) {
devt = MKDEV(xhwicap_major, xhwicap_minor);
retval = register_chrdev_region(
devt,
HWICAP_DEVICES,
DRIVER_NAME);
if (retval < 0)
return retval;
} else {
retval = alloc_chrdev_region(&devt,
xhwicap_minor,
HWICAP_DEVICES,
DRIVER_NAME);
if (retval < 0)
return retval;
xhwicap_major = MAJOR(devt);
}
devt = MKDEV(XHWICAP_MAJOR, XHWICAP_MINOR);
retval = register_chrdev_region(devt,
HWICAP_DEVICES,
DRIVER_NAME);
if (retval < 0)
return retval;
retval = platform_driver_register(&hwicap_platform_driver);
@ -891,7 +876,7 @@ static int __init hwicap_module_init(void)
static void __exit hwicap_module_cleanup(void)
{
dev_t devt = MKDEV(xhwicap_major, xhwicap_minor);
dev_t devt = MKDEV(XHWICAP_MAJOR, XHWICAP_MINOR);
class_destroy(icap_class);