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dm: core: Update device_bind_driver_to_node() to use ofnode
[u-boot] / drivers / clk / at91 / pmc.c
1 /*
2  * Copyright (C) 2016 Atmel Corporation
3  *               Wenyou.Yang <wenyou.yang@atmel.com>
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7
8 #include <common.h>
9 #include <clk-uclass.h>
10 #include <dm.h>
11 #include <dm/lists.h>
12 #include <dm/util.h>
13 #include "pmc.h"
14
15 DECLARE_GLOBAL_DATA_PTR;
16
17 static const struct udevice_id at91_pmc_match[] = {
18         { .compatible = "atmel,at91rm9200-pmc" },
19         { .compatible = "atmel,at91sam9260-pmc" },
20         { .compatible = "atmel,at91sam9g45-pmc" },
21         { .compatible = "atmel,at91sam9n12-pmc" },
22         { .compatible = "atmel,at91sam9x5-pmc" },
23         { .compatible = "atmel,sama5d3-pmc" },
24         { .compatible = "atmel,sama5d2-pmc" },
25         {}
26 };
27
28 U_BOOT_DRIVER(at91_pmc) = {
29         .name = "at91-pmc",
30         .id = UCLASS_SIMPLE_BUS,
31         .of_match = at91_pmc_match,
32 };
33
34 /*---------------------------------------------------------*/
35
36 int at91_pmc_core_probe(struct udevice *dev)
37 {
38         struct pmc_platdata *plat = dev_get_platdata(dev);
39
40         dev = dev_get_parent(dev);
41
42         plat->reg_base = (struct at91_pmc *)devfdt_get_addr_ptr(dev);
43
44         return 0;
45 }
46
47 /**
48  * at91_clk_sub_device_bind() - for the at91 clock driver
49  * Recursively bind its children as clk devices.
50  *
51  * @return: 0 on success, or negative error code on failure
52  */
53 int at91_clk_sub_device_bind(struct udevice *dev, const char *drv_name)
54 {
55         const void *fdt = gd->fdt_blob;
56         int offset = dev_of_offset(dev);
57         bool pre_reloc_only = !(gd->flags & GD_FLG_RELOC);
58         const char *name;
59         int ret;
60
61         for (offset = fdt_first_subnode(fdt, offset);
62              offset > 0;
63              offset = fdt_next_subnode(fdt, offset)) {
64                 if (pre_reloc_only &&
65                     !dm_fdt_pre_reloc(fdt, offset))
66                         continue;
67                 /*
68                  * If this node has "compatible" property, this is not
69                  * a clock sub-node, but a normal device. skip.
70                  */
71                 fdt_get_property(fdt, offset, "compatible", &ret);
72                 if (ret >= 0)
73                         continue;
74
75                 if (ret != -FDT_ERR_NOTFOUND)
76                         return ret;
77
78                 name = fdt_get_name(fdt, offset, NULL);
79                 if (!name)
80                         return -EINVAL;
81                 ret = device_bind_driver_to_node(dev, drv_name, name,
82                                         offset_to_ofnode(offset), NULL);
83                 if (ret)
84                         return ret;
85         }
86
87         return 0;
88 }
89
90 int at91_clk_of_xlate(struct clk *clk, struct fdtdec_phandle_args *args)
91 {
92         int periph;
93
94         if (args->args_count) {
95                 debug("Invalid args_count: %d\n", args->args_count);
96                 return -EINVAL;
97         }
98
99         periph = fdtdec_get_uint(gd->fdt_blob, dev_of_offset(clk->dev), "reg",
100                                  -1);
101         if (periph < 0)
102                 return -EINVAL;
103
104         clk->id = periph;
105
106         return 0;
107 }
108
109 int at91_clk_probe(struct udevice *dev)
110 {
111         struct udevice *dev_periph_container, *dev_pmc;
112         struct pmc_platdata *plat = dev_get_platdata(dev);
113
114         dev_periph_container = dev_get_parent(dev);
115         dev_pmc = dev_get_parent(dev_periph_container);
116
117         plat->reg_base = (struct at91_pmc *)devfdt_get_addr_ptr(dev_pmc);
118
119         return 0;
120 }