Greg KH wrote:
I wrote
so, wheres my device ?
Depends on what your driver is, and where it stores it.
dont I automatically get one, perhaps under the covers ?
Depends on what type of driver you are. If you are an i2c driver, you
get one. A PCI driver, you get one. A USB driver, you get one. A
platform driver, well, you might be on your own, you have to create
yours, using the platform api.
ok - got something that works.
+
+ pdev = platform_device_register_simple(DRVNAME, 0, NULL, 0);
+ if (!pdev) {
+ printk(KERN_ERR NAME "Error %d on minor %d", rc, i);
+ } else {
+ dev_err(pdev, "devinfo works! %d devs\n", i);
+ }
return 0; /* succeed */
So, style question. In scx200_gpio_init, Ive got to
devices = kzalloc
register-chrdev-region
platform-device-register
presuming that I should be calling all 3, is there any reason to prefer
1 order vs another ?
most-likely to fail 1st ? and which is that ?
couldnt the others be also (if later).
I also found this:
**Subject: Driver model ISA bus**
http://marc.theaimsgroup.com/?l=linux-kernel&m=114678055902797&w=2
It looks interesting - anything that simplifies stuff is -
but alas - theres no empty-isa-driver.c for me to start from.
It's getting there, hasn't made it into any kernel trees yet...
thanks,
greg k-h
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