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| 2 | |
| 3 | * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp.
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| 4 | * <[email protected]>
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| 5 |
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| 6 |
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| 7 | #undef DEBUG
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| 8 |
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| 9 | #include <linux/kernel.h>
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| 10 | #include <linux/export.h>
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| 11 | #include <linux/of_address.h>
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| 12 | #include <asm/dcr.h>
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| 13 |
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| 14 | unsigned int dcr_resource_start(const struct device_node *np,
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| 15 | unsigned int index)
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| 16 | {
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| 17 | unsigned int ds;
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| 18 | const u32 *dr = of_get_property(np, "dcr-reg", &ds);
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| 19 |
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| 20 | if (dr == NULL || ds & 1 || index >= (ds / 8))
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| 21 | return 0;
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| 22 |
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| 23 | return dr[index * 2];
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| 24 | }
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| 25 | EXPORT_SYMBOL_GPL(dcr_resource_start);
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| 26 |
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| 27 | unsigned int dcr_resource_len(const struct device_node *np, unsigned int index)
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| 28 | {
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| 29 | unsigned int ds;
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| 30 | const u32 *dr = of_get_property(np, "dcr-reg", &ds);
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| 31 |
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| 32 | if (dr == NULL || ds & 1 || index >= (ds / 8))
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| 33 | return 0;
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| 34 |
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| 35 | return dr[index * 2 + 1];
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| 36 | }
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| 37 | EXPORT_SYMBOL_GPL(dcr_resource_len);
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| 38 |
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| 39 | DEFINE_SPINLOCK(dcr_ind_lock);
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| 40 | EXPORT_SYMBOL_GPL(dcr_ind_lock);
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