Messages in this thread | | | Date | Wed, 26 Aug 2009 10:25:47 -0300 | Subject | PPC driver - generic bus width | From | Alemao <> |
| |
Hi all,
Im trying to develop a driver for my device, and its data bus can be 8, 16 or 32 bits. This information is passed through the device tree source. My code is like this:
struct device_info_t { void (*read)(); void (*write)(); };
static int __devinit device_probe() { prop = of_get_property(ofdev->node, "bus-width", &size);
device->bus_width = *prop;
switch (device->bus_width) { case 8: device->read = in_8; device->write = out_8; break; case 16: device->read = in_be16; device->write = out_be16; break; case 32: device->read = in_be32; device->write = out_be32; break; default: break; } }
Can someone point me some driver that is doing something similar to the ideia shown above?
Or what Im doing wrong in my code? Cause Im getting erros (warnings) like:
cc1: warnings being treated as errors drivers/dev_test.c:37: warning: function declaration isn't a prototype drivers/dev_test.c:38: warning: function declaration isn't a prototype drivers/dev_test.c: In function 'device_probe': drivers/dev_test.c:113: warning: assignment from incompatible pointer type
PS: Im using a MPC8349, linux kernel 2.6.26
Cheers,
-- Alemao
| |