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10#include <linux/mfd/core.h>
11#include <linux/init.h>
12#include <linux/of.h>
13
14#define SUN8I_CODEC_ANALOG_BASE 0x1c0
15#define SUN8I_CODEC_ANALOG_SIZE 0x4
16
17struct prcm_data {
18 int nsubdevs;
19 const struct mfd_cell *subdevs;
20};
21
22static const struct resource sun6i_a31_ar100_clk_res[] = {
23 DEFINE_RES_MEM(0x0, 4)
24};
25
26static const struct resource sun6i_a31_apb0_clk_res[] = {
27 DEFINE_RES_MEM(0xc, 4)
28};
29
30static const struct resource sun6i_a31_apb0_gates_clk_res[] = {
31 DEFINE_RES_MEM(0x28, 4)
32};
33
34static const struct resource sun6i_a31_ir_clk_res[] = {
35 DEFINE_RES_MEM(0x54, 4)
36};
37
38static const struct resource sun6i_a31_apb0_rstc_res[] = {
39 DEFINE_RES_MEM(0xb0, 4)
40};
41
42static const struct resource sun8i_codec_analog_res[] = {
43 DEFINE_RES_MEM(SUN8I_CODEC_ANALOG_BASE, SUN8I_CODEC_ANALOG_SIZE),
44};
45
46static const struct mfd_cell sun6i_a31_prcm_subdevs[] = {
47 {
48 .name = "sun6i-a31-ar100-clk",
49 .of_compatible = "allwinner,sun6i-a31-ar100-clk",
50 .num_resources = ARRAY_SIZE(sun6i_a31_ar100_clk_res),
51 .resources = sun6i_a31_ar100_clk_res,
52 },
53 {
54 .name = "sun6i-a31-apb0-clk",
55 .of_compatible = "allwinner,sun6i-a31-apb0-clk",
56 .num_resources = ARRAY_SIZE(sun6i_a31_apb0_clk_res),
57 .resources = sun6i_a31_apb0_clk_res,
58 },
59 {
60 .name = "sun6i-a31-apb0-gates-clk",
61 .of_compatible = "allwinner,sun6i-a31-apb0-gates-clk",
62 .num_resources = ARRAY_SIZE(sun6i_a31_apb0_gates_clk_res),
63 .resources = sun6i_a31_apb0_gates_clk_res,
64 },
65 {
66 .name = "sun6i-a31-ir-clk",
67 .of_compatible = "allwinner,sun4i-a10-mod0-clk",
68 .num_resources = ARRAY_SIZE(sun6i_a31_ir_clk_res),
69 .resources = sun6i_a31_ir_clk_res,
70 },
71 {
72 .name = "sun6i-a31-apb0-clock-reset",
73 .of_compatible = "allwinner,sun6i-a31-clock-reset",
74 .num_resources = ARRAY_SIZE(sun6i_a31_apb0_rstc_res),
75 .resources = sun6i_a31_apb0_rstc_res,
76 },
77};
78
79static const struct mfd_cell sun8i_a23_prcm_subdevs[] = {
80 {
81 .name = "sun8i-a23-apb0-clk",
82 .of_compatible = "allwinner,sun8i-a23-apb0-clk",
83 .num_resources = ARRAY_SIZE(sun6i_a31_apb0_clk_res),
84 .resources = sun6i_a31_apb0_clk_res,
85 },
86 {
87 .name = "sun6i-a31-apb0-gates-clk",
88 .of_compatible = "allwinner,sun8i-a23-apb0-gates-clk",
89 .num_resources = ARRAY_SIZE(sun6i_a31_apb0_gates_clk_res),
90 .resources = sun6i_a31_apb0_gates_clk_res,
91 },
92 {
93 .name = "sun6i-a31-apb0-clock-reset",
94 .of_compatible = "allwinner,sun6i-a31-clock-reset",
95 .num_resources = ARRAY_SIZE(sun6i_a31_apb0_rstc_res),
96 .resources = sun6i_a31_apb0_rstc_res,
97 },
98 {
99 .name = "sun8i-codec-analog",
100 .of_compatible = "allwinner,sun8i-a23-codec-analog",
101 .num_resources = ARRAY_SIZE(sun8i_codec_analog_res),
102 .resources = sun8i_codec_analog_res,
103 },
104};
105
106static const struct prcm_data sun6i_a31_prcm_data = {
107 .nsubdevs = ARRAY_SIZE(sun6i_a31_prcm_subdevs),
108 .subdevs = sun6i_a31_prcm_subdevs,
109};
110
111static const struct prcm_data sun8i_a23_prcm_data = {
112 .nsubdevs = ARRAY_SIZE(sun8i_a23_prcm_subdevs),
113 .subdevs = sun8i_a23_prcm_subdevs,
114};
115
116static const struct of_device_id sun6i_prcm_dt_ids[] = {
117 {
118 .compatible = "allwinner,sun6i-a31-prcm",
119 .data = &sun6i_a31_prcm_data,
120 },
121 {
122 .compatible = "allwinner,sun8i-a23-prcm",
123 .data = &sun8i_a23_prcm_data,
124 },
125 { },
126};
127
128static int sun6i_prcm_probe(struct platform_device *pdev)
129{
130 const struct of_device_id *match;
131 const struct prcm_data *data;
132 struct resource *res;
133 int ret;
134
135 match = of_match_node(sun6i_prcm_dt_ids, pdev->dev.of_node);
136 if (!match)
137 return -EINVAL;
138
139 data = match->data;
140
141 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
142 if (!res) {
143 dev_err(&pdev->dev, "no prcm memory region provided\n");
144 return -ENOENT;
145 }
146
147 ret = mfd_add_devices(&pdev->dev, 0, data->subdevs, data->nsubdevs,
148 res, -1, NULL);
149 if (ret) {
150 dev_err(&pdev->dev, "failed to add subdevices\n");
151 return ret;
152 }
153
154 return 0;
155}
156
157static struct platform_driver sun6i_prcm_driver = {
158 .driver = {
159 .name = "sun6i-prcm",
160 .of_match_table = sun6i_prcm_dt_ids,
161 },
162 .probe = sun6i_prcm_probe,
163};
164builtin_platform_driver(sun6i_prcm_driver);
165
