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1802d0be | 1 | // SPDX-License-Identifier: GPL-2.0-only |
aed361ad BA |
2 | /* |
3 | * Qualcomm Wireless Connectivity Subsystem Iris driver | |
4 | * | |
5 | * Copyright (C) 2016 Linaro Ltd | |
6 | * Copyright (C) 2014 Sony Mobile Communications AB | |
7 | * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. | |
aed361ad BA |
8 | */ |
9 | ||
10 | #include <linux/clk.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/module.h> | |
3440d8da | 13 | #include <linux/of.h> |
aed361ad BA |
14 | #include <linux/of_device.h> |
15 | #include <linux/platform_device.h> | |
16 | #include <linux/regulator/consumer.h> | |
17 | ||
18 | #include "qcom_wcnss.h" | |
19 | ||
20 | struct qcom_iris { | |
1fcef985 | 21 | struct device dev; |
aed361ad BA |
22 | |
23 | struct clk *xo_clk; | |
24 | ||
25 | struct regulator_bulk_data *vregs; | |
26 | size_t num_vregs; | |
27 | }; | |
28 | ||
29 | struct iris_data { | |
30 | const struct wcnss_vreg_info *vregs; | |
31 | size_t num_vregs; | |
32 | ||
33 | bool use_48mhz_xo; | |
34 | }; | |
35 | ||
36 | static const struct iris_data wcn3620_data = { | |
37 | .vregs = (struct wcnss_vreg_info[]) { | |
38 | { "vddxo", 1800000, 1800000, 10000 }, | |
39 | { "vddrfa", 1300000, 1300000, 100000 }, | |
40 | { "vddpa", 3300000, 3300000, 515000 }, | |
41 | { "vdddig", 1800000, 1800000, 10000 }, | |
42 | }, | |
43 | .num_vregs = 4, | |
44 | .use_48mhz_xo = false, | |
45 | }; | |
46 | ||
47 | static const struct iris_data wcn3660_data = { | |
48 | .vregs = (struct wcnss_vreg_info[]) { | |
49 | { "vddxo", 1800000, 1800000, 10000 }, | |
50 | { "vddrfa", 1300000, 1300000, 100000 }, | |
51 | { "vddpa", 2900000, 3000000, 515000 }, | |
52 | { "vdddig", 1200000, 1225000, 10000 }, | |
53 | }, | |
54 | .num_vregs = 4, | |
55 | .use_48mhz_xo = true, | |
56 | }; | |
57 | ||
58 | static const struct iris_data wcn3680_data = { | |
59 | .vregs = (struct wcnss_vreg_info[]) { | |
60 | { "vddxo", 1800000, 1800000, 10000 }, | |
61 | { "vddrfa", 1300000, 1300000, 100000 }, | |
62 | { "vddpa", 3300000, 3300000, 515000 }, | |
63 | { "vdddig", 1800000, 1800000, 10000 }, | |
64 | }, | |
65 | .num_vregs = 4, | |
66 | .use_48mhz_xo = true, | |
67 | }; | |
68 | ||
69 | int qcom_iris_enable(struct qcom_iris *iris) | |
70 | { | |
71 | int ret; | |
72 | ||
73 | ret = regulator_bulk_enable(iris->num_vregs, iris->vregs); | |
74 | if (ret) | |
75 | return ret; | |
76 | ||
77 | ret = clk_prepare_enable(iris->xo_clk); | |
78 | if (ret) { | |
1fcef985 | 79 | dev_err(&iris->dev, "failed to enable xo clk\n"); |
aed361ad BA |
80 | goto disable_regulators; |
81 | } | |
82 | ||
83 | return 0; | |
84 | ||
85 | disable_regulators: | |
86 | regulator_bulk_disable(iris->num_vregs, iris->vregs); | |
87 | ||
88 | return ret; | |
89 | } | |
aed361ad BA |
90 | |
91 | void qcom_iris_disable(struct qcom_iris *iris) | |
92 | { | |
93 | clk_disable_unprepare(iris->xo_clk); | |
94 | regulator_bulk_disable(iris->num_vregs, iris->vregs); | |
95 | } | |
aed361ad | 96 | |
1fcef985 BA |
97 | static const struct of_device_id iris_of_match[] = { |
98 | { .compatible = "qcom,wcn3620", .data = &wcn3620_data }, | |
99 | { .compatible = "qcom,wcn3660", .data = &wcn3660_data }, | |
100 | { .compatible = "qcom,wcn3660b", .data = &wcn3680_data }, | |
101 | { .compatible = "qcom,wcn3680", .data = &wcn3680_data }, | |
102 | {} | |
103 | }; | |
104 | ||
105 | static void qcom_iris_release(struct device *dev) | |
106 | { | |
107 | struct qcom_iris *iris = container_of(dev, struct qcom_iris, dev); | |
108 | ||
109 | of_node_put(iris->dev.of_node); | |
110 | kfree(iris); | |
111 | } | |
112 | ||
113 | struct qcom_iris *qcom_iris_probe(struct device *parent, bool *use_48mhz_xo) | |
aed361ad | 114 | { |
1fcef985 | 115 | const struct of_device_id *match; |
aed361ad | 116 | const struct iris_data *data; |
1fcef985 | 117 | struct device_node *of_node; |
aed361ad BA |
118 | struct qcom_iris *iris; |
119 | int ret; | |
120 | int i; | |
121 | ||
1fcef985 BA |
122 | of_node = of_get_child_by_name(parent->of_node, "iris"); |
123 | if (!of_node) { | |
124 | dev_err(parent, "No child node \"iris\" found\n"); | |
125 | return ERR_PTR(-EINVAL); | |
126 | } | |
127 | ||
128 | iris = kzalloc(sizeof(*iris), GFP_KERNEL); | |
129 | if (!iris) { | |
130 | of_node_put(of_node); | |
131 | return ERR_PTR(-ENOMEM); | |
132 | } | |
133 | ||
134 | device_initialize(&iris->dev); | |
135 | iris->dev.parent = parent; | |
136 | iris->dev.release = qcom_iris_release; | |
137 | iris->dev.of_node = of_node; | |
138 | ||
139 | dev_set_name(&iris->dev, "%s.iris", dev_name(parent)); | |
140 | ||
141 | ret = device_add(&iris->dev); | |
142 | if (ret) { | |
143 | put_device(&iris->dev); | |
144 | return ERR_PTR(ret); | |
145 | } | |
146 | ||
147 | match = of_match_device(iris_of_match, &iris->dev); | |
148 | if (!match) { | |
149 | dev_err(&iris->dev, "no matching compatible for iris\n"); | |
150 | ret = -EINVAL; | |
151 | goto err_device_del; | |
152 | } | |
aed361ad | 153 | |
1fcef985 | 154 | data = match->data; |
aed361ad | 155 | |
1fcef985 | 156 | iris->xo_clk = devm_clk_get(&iris->dev, "xo"); |
aed361ad | 157 | if (IS_ERR(iris->xo_clk)) { |
1fcef985 BA |
158 | ret = PTR_ERR(iris->xo_clk); |
159 | if (ret != -EPROBE_DEFER) | |
160 | dev_err(&iris->dev, "failed to acquire xo clk\n"); | |
161 | goto err_device_del; | |
aed361ad BA |
162 | } |
163 | ||
164 | iris->num_vregs = data->num_vregs; | |
1fcef985 | 165 | iris->vregs = devm_kcalloc(&iris->dev, |
aed361ad BA |
166 | iris->num_vregs, |
167 | sizeof(struct regulator_bulk_data), | |
168 | GFP_KERNEL); | |
1fcef985 BA |
169 | if (!iris->vregs) { |
170 | ret = -ENOMEM; | |
171 | goto err_device_del; | |
172 | } | |
aed361ad BA |
173 | |
174 | for (i = 0; i < iris->num_vregs; i++) | |
175 | iris->vregs[i].supply = data->vregs[i].name; | |
176 | ||
1fcef985 | 177 | ret = devm_regulator_bulk_get(&iris->dev, iris->num_vregs, iris->vregs); |
aed361ad | 178 | if (ret) { |
1fcef985 BA |
179 | dev_err(&iris->dev, "failed to get regulators\n"); |
180 | goto err_device_del; | |
aed361ad BA |
181 | } |
182 | ||
183 | for (i = 0; i < iris->num_vregs; i++) { | |
184 | if (data->vregs[i].max_voltage) | |
185 | regulator_set_voltage(iris->vregs[i].consumer, | |
186 | data->vregs[i].min_voltage, | |
187 | data->vregs[i].max_voltage); | |
188 | ||
189 | if (data->vregs[i].load_uA) | |
190 | regulator_set_load(iris->vregs[i].consumer, | |
191 | data->vregs[i].load_uA); | |
192 | } | |
193 | ||
1fcef985 | 194 | *use_48mhz_xo = data->use_48mhz_xo; |
aed361ad | 195 | |
1fcef985 | 196 | return iris; |
aed361ad | 197 | |
1fcef985 BA |
198 | err_device_del: |
199 | device_del(&iris->dev); | |
aed361ad | 200 | |
1fcef985 | 201 | return ERR_PTR(ret); |
aed361ad BA |
202 | } |
203 | ||
1fcef985 BA |
204 | void qcom_iris_remove(struct qcom_iris *iris) |
205 | { | |
206 | device_del(&iris->dev); | |
207 | } |