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aed361ad BA |
1 | /* |
2 | * Qualcomm Wireless Connectivity Subsystem Iris driver | |
3 | * | |
4 | * Copyright (C) 2016 Linaro Ltd | |
5 | * Copyright (C) 2014 Sony Mobile Communications AB | |
6 | * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * version 2 as published by the Free Software Foundation. | |
11 | * | |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | */ | |
17 | ||
18 | #include <linux/clk.h> | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/module.h> | |
21 | #include <linux/of_device.h> | |
22 | #include <linux/platform_device.h> | |
23 | #include <linux/regulator/consumer.h> | |
24 | ||
25 | #include "qcom_wcnss.h" | |
26 | ||
27 | struct qcom_iris { | |
28 | struct device *dev; | |
29 | ||
30 | struct clk *xo_clk; | |
31 | ||
32 | struct regulator_bulk_data *vregs; | |
33 | size_t num_vregs; | |
34 | }; | |
35 | ||
36 | struct iris_data { | |
37 | const struct wcnss_vreg_info *vregs; | |
38 | size_t num_vregs; | |
39 | ||
40 | bool use_48mhz_xo; | |
41 | }; | |
42 | ||
43 | static const struct iris_data wcn3620_data = { | |
44 | .vregs = (struct wcnss_vreg_info[]) { | |
45 | { "vddxo", 1800000, 1800000, 10000 }, | |
46 | { "vddrfa", 1300000, 1300000, 100000 }, | |
47 | { "vddpa", 3300000, 3300000, 515000 }, | |
48 | { "vdddig", 1800000, 1800000, 10000 }, | |
49 | }, | |
50 | .num_vregs = 4, | |
51 | .use_48mhz_xo = false, | |
52 | }; | |
53 | ||
54 | static const struct iris_data wcn3660_data = { | |
55 | .vregs = (struct wcnss_vreg_info[]) { | |
56 | { "vddxo", 1800000, 1800000, 10000 }, | |
57 | { "vddrfa", 1300000, 1300000, 100000 }, | |
58 | { "vddpa", 2900000, 3000000, 515000 }, | |
59 | { "vdddig", 1200000, 1225000, 10000 }, | |
60 | }, | |
61 | .num_vregs = 4, | |
62 | .use_48mhz_xo = true, | |
63 | }; | |
64 | ||
65 | static const struct iris_data wcn3680_data = { | |
66 | .vregs = (struct wcnss_vreg_info[]) { | |
67 | { "vddxo", 1800000, 1800000, 10000 }, | |
68 | { "vddrfa", 1300000, 1300000, 100000 }, | |
69 | { "vddpa", 3300000, 3300000, 515000 }, | |
70 | { "vdddig", 1800000, 1800000, 10000 }, | |
71 | }, | |
72 | .num_vregs = 4, | |
73 | .use_48mhz_xo = true, | |
74 | }; | |
75 | ||
76 | int qcom_iris_enable(struct qcom_iris *iris) | |
77 | { | |
78 | int ret; | |
79 | ||
80 | ret = regulator_bulk_enable(iris->num_vregs, iris->vregs); | |
81 | if (ret) | |
82 | return ret; | |
83 | ||
84 | ret = clk_prepare_enable(iris->xo_clk); | |
85 | if (ret) { | |
86 | dev_err(iris->dev, "failed to enable xo clk\n"); | |
87 | goto disable_regulators; | |
88 | } | |
89 | ||
90 | return 0; | |
91 | ||
92 | disable_regulators: | |
93 | regulator_bulk_disable(iris->num_vregs, iris->vregs); | |
94 | ||
95 | return ret; | |
96 | } | |
aed361ad BA |
97 | |
98 | void qcom_iris_disable(struct qcom_iris *iris) | |
99 | { | |
100 | clk_disable_unprepare(iris->xo_clk); | |
101 | regulator_bulk_disable(iris->num_vregs, iris->vregs); | |
102 | } | |
aed361ad BA |
103 | |
104 | static int qcom_iris_probe(struct platform_device *pdev) | |
105 | { | |
106 | const struct iris_data *data; | |
107 | struct qcom_wcnss *wcnss; | |
108 | struct qcom_iris *iris; | |
109 | int ret; | |
110 | int i; | |
111 | ||
112 | iris = devm_kzalloc(&pdev->dev, sizeof(struct qcom_iris), GFP_KERNEL); | |
113 | if (!iris) | |
114 | return -ENOMEM; | |
115 | ||
116 | data = of_device_get_match_data(&pdev->dev); | |
117 | wcnss = dev_get_drvdata(pdev->dev.parent); | |
118 | ||
119 | iris->xo_clk = devm_clk_get(&pdev->dev, "xo"); | |
120 | if (IS_ERR(iris->xo_clk)) { | |
121 | if (PTR_ERR(iris->xo_clk) != -EPROBE_DEFER) | |
122 | dev_err(&pdev->dev, "failed to acquire xo clk\n"); | |
123 | return PTR_ERR(iris->xo_clk); | |
124 | } | |
125 | ||
126 | iris->num_vregs = data->num_vregs; | |
127 | iris->vregs = devm_kcalloc(&pdev->dev, | |
128 | iris->num_vregs, | |
129 | sizeof(struct regulator_bulk_data), | |
130 | GFP_KERNEL); | |
131 | if (!iris->vregs) | |
132 | return -ENOMEM; | |
133 | ||
134 | for (i = 0; i < iris->num_vregs; i++) | |
135 | iris->vregs[i].supply = data->vregs[i].name; | |
136 | ||
137 | ret = devm_regulator_bulk_get(&pdev->dev, iris->num_vregs, iris->vregs); | |
138 | if (ret) { | |
139 | dev_err(&pdev->dev, "failed to get regulators\n"); | |
140 | return ret; | |
141 | } | |
142 | ||
143 | for (i = 0; i < iris->num_vregs; i++) { | |
144 | if (data->vregs[i].max_voltage) | |
145 | regulator_set_voltage(iris->vregs[i].consumer, | |
146 | data->vregs[i].min_voltage, | |
147 | data->vregs[i].max_voltage); | |
148 | ||
149 | if (data->vregs[i].load_uA) | |
150 | regulator_set_load(iris->vregs[i].consumer, | |
151 | data->vregs[i].load_uA); | |
152 | } | |
153 | ||
154 | qcom_wcnss_assign_iris(wcnss, iris, data->use_48mhz_xo); | |
155 | ||
156 | return 0; | |
157 | } | |
158 | ||
159 | static int qcom_iris_remove(struct platform_device *pdev) | |
160 | { | |
161 | struct qcom_wcnss *wcnss = dev_get_drvdata(pdev->dev.parent); | |
162 | ||
163 | qcom_wcnss_assign_iris(wcnss, NULL, false); | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
168 | static const struct of_device_id iris_of_match[] = { | |
169 | { .compatible = "qcom,wcn3620", .data = &wcn3620_data }, | |
170 | { .compatible = "qcom,wcn3660", .data = &wcn3660_data }, | |
171 | { .compatible = "qcom,wcn3680", .data = &wcn3680_data }, | |
172 | {} | |
173 | }; | |
af148e45 | 174 | MODULE_DEVICE_TABLE(of, iris_of_match); |
aed361ad | 175 | |
6de1a507 | 176 | struct platform_driver qcom_iris_driver = { |
aed361ad BA |
177 | .probe = qcom_iris_probe, |
178 | .remove = qcom_iris_remove, | |
179 | .driver = { | |
180 | .name = "qcom-iris", | |
181 | .of_match_table = iris_of_match, | |
182 | }, | |
183 | }; |