dd27dcda37
Merge common code between powerpc and microblaze Signed-off-by: Grant Likely <grant.likely@secretlab.ca> CC: Michal Simek <monstr@monstr.eu> CC: Wolfram Sang <w.sang@pengutronix.de> CC: Stephen Rothwell <sfr@canb.auug.org.au> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: microblaze-uclinux@itee.uq.edu.au CC: linuxppc-dev@ozlabs.org
84 lines
1.9 KiB
C
84 lines
1.9 KiB
C
#include <linux/string.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/of.h>
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/mod_devicetable.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/of_device.h>
|
|
|
|
#include <asm/errno.h>
|
|
#include <asm/dcr.h>
|
|
|
|
static void of_device_make_bus_id(struct of_device *dev)
|
|
{
|
|
static atomic_t bus_no_reg_magic;
|
|
struct device_node *node = dev->dev.of_node;
|
|
const u32 *reg;
|
|
u64 addr;
|
|
int magic;
|
|
|
|
/*
|
|
* If it's a DCR based device, use 'd' for native DCRs
|
|
* and 'D' for MMIO DCRs.
|
|
*/
|
|
#ifdef CONFIG_PPC_DCR
|
|
reg = of_get_property(node, "dcr-reg", NULL);
|
|
if (reg) {
|
|
#ifdef CONFIG_PPC_DCR_NATIVE
|
|
dev_set_name(&dev->dev, "d%x.%s", *reg, node->name);
|
|
#else /* CONFIG_PPC_DCR_NATIVE */
|
|
addr = of_translate_dcr_address(node, *reg, NULL);
|
|
if (addr != OF_BAD_ADDR) {
|
|
dev_set_name(&dev->dev, "D%llx.%s",
|
|
(unsigned long long)addr, node->name);
|
|
return;
|
|
}
|
|
#endif /* !CONFIG_PPC_DCR_NATIVE */
|
|
}
|
|
#endif /* CONFIG_PPC_DCR */
|
|
|
|
/*
|
|
* For MMIO, get the physical address
|
|
*/
|
|
reg = of_get_property(node, "reg", NULL);
|
|
if (reg) {
|
|
addr = of_translate_address(node, reg);
|
|
if (addr != OF_BAD_ADDR) {
|
|
dev_set_name(&dev->dev, "%llx.%s",
|
|
(unsigned long long)addr, node->name);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* No BusID, use the node name and add a globally incremented
|
|
* counter (and pray...)
|
|
*/
|
|
magic = atomic_add_return(1, &bus_no_reg_magic);
|
|
dev_set_name(&dev->dev, "%s.%d", node->name, magic - 1);
|
|
}
|
|
|
|
struct of_device *of_device_alloc(struct device_node *np,
|
|
const char *bus_id,
|
|
struct device *parent)
|
|
{
|
|
struct of_device *dev;
|
|
|
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
|
if (!dev)
|
|
return NULL;
|
|
|
|
dev->dev.of_node = of_node_get(np);
|
|
dev->dev.dma_mask = &dev->archdata.dma_mask;
|
|
dev->dev.parent = parent;
|
|
dev->dev.release = of_release_dev;
|
|
|
|
if (bus_id)
|
|
dev_set_name(&dev->dev, "%s", bus_id);
|
|
else
|
|
of_device_make_bus_id(dev);
|
|
|
|
return dev;
|
|
}
|
|
EXPORT_SYMBOL(of_device_alloc);
|