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
85 lines
1.9 KiB
C
85 lines
1.9 KiB
C
#include <linux/string.h>
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#include <linux/kernel.h>
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#include <linux/of.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/slab.h>
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#include <linux/of_device.h>
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#include <asm/errno.h>
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#include <asm/dcr.h>
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static void of_device_make_bus_id(struct of_device *dev)
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{
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static atomic_t bus_no_reg_magic;
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struct device_node *node = dev->dev.of_node;
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const u32 *reg;
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u64 addr;
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int magic;
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/*
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* If it's a DCR based device, use 'd' for native DCRs
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* and 'D' for MMIO DCRs.
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*/
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#ifdef CONFIG_PPC_DCR
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reg = of_get_property(node, "dcr-reg", NULL);
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if (reg) {
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#ifdef CONFIG_PPC_DCR_NATIVE
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dev_set_name(&dev->dev, "d%x.%s", *reg, node->name);
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#else /* CONFIG_PPC_DCR_NATIVE */
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addr = of_translate_dcr_address(node, *reg, NULL);
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if (addr != OF_BAD_ADDR) {
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dev_set_name(&dev->dev, "D%llx.%s",
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(unsigned long long)addr, node->name);
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return;
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}
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#endif /* !CONFIG_PPC_DCR_NATIVE */
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}
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#endif /* CONFIG_PPC_DCR */
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/*
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* For MMIO, get the physical address
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*/
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reg = of_get_property(node, "reg", NULL);
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if (reg) {
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addr = of_translate_address(node, reg);
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if (addr != OF_BAD_ADDR) {
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dev_set_name(&dev->dev, "%llx.%s",
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(unsigned long long)addr, node->name);
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return;
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}
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}
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/*
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* No BusID, use the node name and add a globally incremented
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* counter (and pray...)
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*/
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magic = atomic_add_return(1, &bus_no_reg_magic);
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dev_set_name(&dev->dev, "%s.%d", node->name, magic - 1);
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}
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struct of_device *of_device_alloc(struct device_node *np,
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const char *bus_id,
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struct device *parent)
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{
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struct of_device *dev;
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dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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if (!dev)
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return NULL;
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dev->dev.of_node = of_node_get(np);
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dev->dev.dma_mask = &dev->archdata.dma_mask;
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dev->dev.parent = parent;
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dev->dev.release = of_release_dev;
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if (bus_id)
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dev_set_name(&dev->dev, "%s", bus_id);
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else
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of_device_make_bus_id(dev);
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return dev;
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}
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EXPORT_SYMBOL(of_device_alloc);
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