This source file includes following definitions.
- clk_bcm63xx_probe
- clk_bcm63xx_remove
1
2
3 #include <linux/clk-provider.h>
4 #include <linux/init.h>
5 #include <linux/of.h>
6 #include <linux/of_device.h>
7 #include <linux/platform_device.h>
8
9 struct clk_bcm63xx_table_entry {
10 const char * const name;
11 u8 bit;
12 unsigned long flags;
13 };
14
15 struct clk_bcm63xx_hw {
16 void __iomem *regs;
17 spinlock_t lock;
18
19 struct clk_hw_onecell_data data;
20 };
21
22 static const struct clk_bcm63xx_table_entry bcm3368_clocks[] = {
23 { .name = "mac", .bit = 3, },
24 { .name = "tc", .bit = 5, },
25 { .name = "us_top", .bit = 6, },
26 { .name = "ds_top", .bit = 7, },
27 { .name = "acm", .bit = 8, },
28 { .name = "spi", .bit = 9, },
29 { .name = "usbs", .bit = 10, },
30 { .name = "bmu", .bit = 11, },
31 { .name = "pcm", .bit = 12, },
32 { .name = "ntp", .bit = 13, },
33 { .name = "acp_b", .bit = 14, },
34 { .name = "acp_a", .bit = 15, },
35 { .name = "emusb", .bit = 17, },
36 { .name = "enet0", .bit = 18, },
37 { .name = "enet1", .bit = 19, },
38 { .name = "usbsu", .bit = 20, },
39 { .name = "ephy", .bit = 21, },
40 { },
41 };
42
43 static const struct clk_bcm63xx_table_entry bcm6328_clocks[] = {
44 { .name = "phy_mips", .bit = 0, },
45 { .name = "adsl_qproc", .bit = 1, },
46 { .name = "adsl_afe", .bit = 2, },
47 { .name = "adsl", .bit = 3, },
48 { .name = "mips", .bit = 4, .flags = CLK_IS_CRITICAL, },
49 { .name = "sar", .bit = 5, },
50 { .name = "pcm", .bit = 6, },
51 { .name = "usbd", .bit = 7, },
52 { .name = "usbh", .bit = 8, },
53 { .name = "hsspi", .bit = 9, },
54 { .name = "pcie", .bit = 10, },
55 { .name = "robosw", .bit = 11, },
56 { },
57 };
58
59 static const struct clk_bcm63xx_table_entry bcm6358_clocks[] = {
60 { .name = "enet", .bit = 4, },
61 { .name = "adslphy", .bit = 5, },
62 { .name = "pcm", .bit = 8, },
63 { .name = "spi", .bit = 9, },
64 { .name = "usbs", .bit = 10, },
65 { .name = "sar", .bit = 11, },
66 { .name = "emusb", .bit = 17, },
67 { .name = "enet0", .bit = 18, },
68 { .name = "enet1", .bit = 19, },
69 { .name = "usbsu", .bit = 20, },
70 { .name = "ephy", .bit = 21, },
71 { },
72 };
73
74 static const struct clk_bcm63xx_table_entry bcm6362_clocks[] = {
75 { .name = "adsl_qproc", .bit = 1, },
76 { .name = "adsl_afe", .bit = 2, },
77 { .name = "adsl", .bit = 3, },
78 { .name = "mips", .bit = 4, .flags = CLK_IS_CRITICAL, },
79 { .name = "wlan_ocp", .bit = 5, },
80 { .name = "swpkt_usb", .bit = 7, },
81 { .name = "swpkt_sar", .bit = 8, },
82 { .name = "sar", .bit = 9, },
83 { .name = "robosw", .bit = 10, },
84 { .name = "pcm", .bit = 11, },
85 { .name = "usbd", .bit = 12, },
86 { .name = "usbh", .bit = 13, },
87 { .name = "ipsec", .bit = 14, },
88 { .name = "spi", .bit = 15, },
89 { .name = "hsspi", .bit = 16, },
90 { .name = "pcie", .bit = 17, },
91 { .name = "fap", .bit = 18, },
92 { .name = "phymips", .bit = 19, },
93 { .name = "nand", .bit = 20, },
94 { },
95 };
96
97 static const struct clk_bcm63xx_table_entry bcm6368_clocks[] = {
98 { .name = "vdsl_qproc", .bit = 2, },
99 { .name = "vdsl_afe", .bit = 3, },
100 { .name = "vdsl_bonding", .bit = 4, },
101 { .name = "vdsl", .bit = 5, },
102 { .name = "phymips", .bit = 6, },
103 { .name = "swpkt_usb", .bit = 7, },
104 { .name = "swpkt_sar", .bit = 8, },
105 { .name = "spi", .bit = 9, },
106 { .name = "usbd", .bit = 10, },
107 { .name = "sar", .bit = 11, },
108 { .name = "robosw", .bit = 12, },
109 { .name = "utopia", .bit = 13, },
110 { .name = "pcm", .bit = 14, },
111 { .name = "usbh", .bit = 15, },
112 { .name = "disable_gless", .bit = 16, },
113 { .name = "nand", .bit = 17, },
114 { .name = "ipsec", .bit = 18, },
115 { },
116 };
117
118 static const struct clk_bcm63xx_table_entry bcm63268_clocks[] = {
119 { .name = "disable_gless", .bit = 0, },
120 { .name = "vdsl_qproc", .bit = 1, },
121 { .name = "vdsl_afe", .bit = 2, },
122 { .name = "vdsl", .bit = 3, },
123 { .name = "mips", .bit = 4, .flags = CLK_IS_CRITICAL, },
124 { .name = "wlan_ocp", .bit = 5, },
125 { .name = "dect", .bit = 6, },
126 { .name = "fap0", .bit = 7, },
127 { .name = "fap1", .bit = 8, },
128 { .name = "sar", .bit = 9, },
129 { .name = "robosw", .bit = 10, },
130 { .name = "pcm", .bit = 11, },
131 { .name = "usbd", .bit = 12, },
132 { .name = "usbh", .bit = 13, },
133 { .name = "ipsec", .bit = 14, },
134 { .name = "spi", .bit = 15, },
135 { .name = "hsspi", .bit = 16, },
136 { .name = "pcie", .bit = 17, },
137 { .name = "phymips", .bit = 18, },
138 { .name = "gmac", .bit = 19, },
139 { .name = "nand", .bit = 20, },
140 { .name = "tbus", .bit = 27, },
141 { .name = "robosw250", .bit = 31, },
142 { },
143 };
144
145 static int clk_bcm63xx_probe(struct platform_device *pdev)
146 {
147 const struct clk_bcm63xx_table_entry *entry, *table;
148 struct clk_bcm63xx_hw *hw;
149 u8 maxbit = 0;
150 int i, ret;
151
152 table = of_device_get_match_data(&pdev->dev);
153 if (!table)
154 return -EINVAL;
155
156 for (entry = table; entry->name; entry++)
157 maxbit = max_t(u8, maxbit, entry->bit);
158
159 hw = devm_kzalloc(&pdev->dev, struct_size(hw, data.hws, maxbit),
160 GFP_KERNEL);
161 if (!hw)
162 return -ENOMEM;
163
164 platform_set_drvdata(pdev, hw);
165
166 spin_lock_init(&hw->lock);
167
168 hw->data.num = maxbit;
169 for (i = 0; i < maxbit; i++)
170 hw->data.hws[i] = ERR_PTR(-ENODEV);
171
172 hw->regs = devm_platform_ioremap_resource(pdev, 0);
173 if (IS_ERR(hw->regs))
174 return PTR_ERR(hw->regs);
175
176 for (entry = table; entry->name; entry++) {
177 struct clk_hw *clk;
178
179 clk = clk_hw_register_gate(&pdev->dev, entry->name, NULL,
180 entry->flags, hw->regs, entry->bit,
181 CLK_GATE_BIG_ENDIAN, &hw->lock);
182 if (IS_ERR(clk)) {
183 ret = PTR_ERR(clk);
184 goto out_err;
185 }
186
187 hw->data.hws[entry->bit] = clk;
188 }
189
190 ret = of_clk_add_hw_provider(pdev->dev.of_node, of_clk_hw_onecell_get,
191 &hw->data);
192 if (!ret)
193 return 0;
194 out_err:
195 for (i = 0; i < hw->data.num; i++) {
196 if (!IS_ERR(hw->data.hws[i]))
197 clk_hw_unregister_gate(hw->data.hws[i]);
198 }
199
200 return ret;
201 }
202
203 static int clk_bcm63xx_remove(struct platform_device *pdev)
204 {
205 struct clk_bcm63xx_hw *hw = platform_get_drvdata(pdev);
206 int i;
207
208 of_clk_del_provider(pdev->dev.of_node);
209
210 for (i = 0; i < hw->data.num; i++) {
211 if (!IS_ERR(hw->data.hws[i]))
212 clk_hw_unregister_gate(hw->data.hws[i]);
213 }
214
215 return 0;
216 }
217
218 static const struct of_device_id clk_bcm63xx_dt_ids[] = {
219 { .compatible = "brcm,bcm3368-clocks", .data = &bcm3368_clocks, },
220 { .compatible = "brcm,bcm6328-clocks", .data = &bcm6328_clocks, },
221 { .compatible = "brcm,bcm6358-clocks", .data = &bcm6358_clocks, },
222 { .compatible = "brcm,bcm6362-clocks", .data = &bcm6362_clocks, },
223 { .compatible = "brcm,bcm6368-clocks", .data = &bcm6368_clocks, },
224 { .compatible = "brcm,bcm63268-clocks", .data = &bcm63268_clocks, },
225 { }
226 };
227
228 static struct platform_driver clk_bcm63xx = {
229 .probe = clk_bcm63xx_probe,
230 .remove = clk_bcm63xx_remove,
231 .driver = {
232 .name = "bcm63xx-clock",
233 .of_match_table = clk_bcm63xx_dt_ids,
234 },
235 };
236 builtin_platform_driver(clk_bcm63xx);