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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> | |
13 | #include <linux/of_device.h> | |
14 | #include <linux/platform_device.h> | |
15 | #include <linux/regulator/consumer.h> | |
16 | ||
17 | #include "qcom_wcnss.h" | |
18 | ||
19 | struct qcom_iris { | |
20 | struct device *dev; | |
21 | ||
22 | struct clk *xo_clk; | |
23 | ||
24 | struct regulator_bulk_data *vregs; | |
25 | size_t num_vregs; | |
26 | }; | |
27 | ||
28 | struct iris_data { | |
29 | const struct wcnss_vreg_info *vregs; | |
30 | size_t num_vregs; | |
31 | ||
32 | bool use_48mhz_xo; | |
33 | }; | |
34 | ||
35 | static const struct iris_data wcn3620_data = { | |
36 | .vregs = (struct wcnss_vreg_info[]) { | |
37 | { "vddxo", 1800000, 1800000, 10000 }, | |
38 | { "vddrfa", 1300000, 1300000, 100000 }, | |
39 | { "vddpa", 3300000, 3300000, 515000 }, | |
40 | { "vdddig", 1800000, 1800000, 10000 }, | |
41 | }, | |
42 | .num_vregs = 4, | |
43 | .use_48mhz_xo = false, | |
44 | }; | |
45 | ||
46 | static const struct iris_data wcn3660_data = { | |
47 | .vregs = (struct wcnss_vreg_info[]) { | |
48 | { "vddxo", 1800000, 1800000, 10000 }, | |
49 | { "vddrfa", 1300000, 1300000, 100000 }, | |
50 | { "vddpa", 2900000, 3000000, 515000 }, | |
51 | { "vdddig", 1200000, 1225000, 10000 }, | |
52 | }, | |
53 | .num_vregs = 4, | |
54 | .use_48mhz_xo = true, | |
55 | }; | |
56 | ||
57 | static const struct iris_data wcn3680_data = { | |
58 | .vregs = (struct wcnss_vreg_info[]) { | |
59 | { "vddxo", 1800000, 1800000, 10000 }, | |
60 | { "vddrfa", 1300000, 1300000, 100000 }, | |
61 | { "vddpa", 3300000, 3300000, 515000 }, | |
62 | { "vdddig", 1800000, 1800000, 10000 }, | |
63 | }, | |
64 | .num_vregs = 4, | |
65 | .use_48mhz_xo = true, | |
66 | }; | |
67 | ||
68 | int qcom_iris_enable(struct qcom_iris *iris) | |
69 | { | |
70 | int ret; | |
71 | ||
72 | ret = regulator_bulk_enable(iris->num_vregs, iris->vregs); | |
73 | if (ret) | |
74 | return ret; | |
75 | ||
76 | ret = clk_prepare_enable(iris->xo_clk); | |
77 | if (ret) { | |
78 | dev_err(iris->dev, "failed to enable xo clk\n"); | |
79 | goto disable_regulators; | |
80 | } | |
81 | ||
82 | return 0; | |
83 | ||
84 | disable_regulators: | |
85 | regulator_bulk_disable(iris->num_vregs, iris->vregs); | |
86 | ||
87 | return ret; | |
88 | } | |
aed361ad BA |
89 | |
90 | void qcom_iris_disable(struct qcom_iris *iris) | |
91 | { | |
92 | clk_disable_unprepare(iris->xo_clk); | |
93 | regulator_bulk_disable(iris->num_vregs, iris->vregs); | |
94 | } | |
aed361ad BA |
95 | |
96 | static int qcom_iris_probe(struct platform_device *pdev) | |
97 | { | |
98 | const struct iris_data *data; | |
99 | struct qcom_wcnss *wcnss; | |
100 | struct qcom_iris *iris; | |
101 | int ret; | |
102 | int i; | |
103 | ||
104 | iris = devm_kzalloc(&pdev->dev, sizeof(struct qcom_iris), GFP_KERNEL); | |
105 | if (!iris) | |
106 | return -ENOMEM; | |
107 | ||
108 | data = of_device_get_match_data(&pdev->dev); | |
109 | wcnss = dev_get_drvdata(pdev->dev.parent); | |
110 | ||
111 | iris->xo_clk = devm_clk_get(&pdev->dev, "xo"); | |
112 | if (IS_ERR(iris->xo_clk)) { | |
113 | if (PTR_ERR(iris->xo_clk) != -EPROBE_DEFER) | |
114 | dev_err(&pdev->dev, "failed to acquire xo clk\n"); | |
115 | return PTR_ERR(iris->xo_clk); | |
116 | } | |
117 | ||
118 | iris->num_vregs = data->num_vregs; | |
119 | iris->vregs = devm_kcalloc(&pdev->dev, | |
120 | iris->num_vregs, | |
121 | sizeof(struct regulator_bulk_data), | |
122 | GFP_KERNEL); | |
123 | if (!iris->vregs) | |
124 | return -ENOMEM; | |
125 | ||
126 | for (i = 0; i < iris->num_vregs; i++) | |
127 | iris->vregs[i].supply = data->vregs[i].name; | |
128 | ||
129 | ret = devm_regulator_bulk_get(&pdev->dev, iris->num_vregs, iris->vregs); | |
130 | if (ret) { | |
131 | dev_err(&pdev->dev, "failed to get regulators\n"); | |
132 | return ret; | |
133 | } | |
134 | ||
135 | for (i = 0; i < iris->num_vregs; i++) { | |
136 | if (data->vregs[i].max_voltage) | |
137 | regulator_set_voltage(iris->vregs[i].consumer, | |
138 | data->vregs[i].min_voltage, | |
139 | data->vregs[i].max_voltage); | |
140 | ||
141 | if (data->vregs[i].load_uA) | |
142 | regulator_set_load(iris->vregs[i].consumer, | |
143 | data->vregs[i].load_uA); | |
144 | } | |
145 | ||
146 | qcom_wcnss_assign_iris(wcnss, iris, data->use_48mhz_xo); | |
147 | ||
148 | return 0; | |
149 | } | |
150 | ||
151 | static int qcom_iris_remove(struct platform_device *pdev) | |
152 | { | |
153 | struct qcom_wcnss *wcnss = dev_get_drvdata(pdev->dev.parent); | |
154 | ||
155 | qcom_wcnss_assign_iris(wcnss, NULL, false); | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
160 | static const struct of_device_id iris_of_match[] = { | |
161 | { .compatible = "qcom,wcn3620", .data = &wcn3620_data }, | |
162 | { .compatible = "qcom,wcn3660", .data = &wcn3660_data }, | |
163 | { .compatible = "qcom,wcn3680", .data = &wcn3680_data }, | |
164 | {} | |
165 | }; | |
af148e45 | 166 | MODULE_DEVICE_TABLE(of, iris_of_match); |
aed361ad | 167 | |
6de1a507 | 168 | struct platform_driver qcom_iris_driver = { |
aed361ad BA |
169 | .probe = qcom_iris_probe, |
170 | .remove = qcom_iris_remove, | |
171 | .driver = { | |
172 | .name = "qcom-iris", | |
173 | .of_match_table = iris_of_match, | |
174 | }, | |
175 | }; |