x86/smpboot: Init apic mapping before usage
[cascardo/linux.git] / drivers / remoteproc / qcom_wcnss_iris.c
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 }
97 EXPORT_SYMBOL_GPL(qcom_iris_enable);
98
99 void qcom_iris_disable(struct qcom_iris *iris)
100 {
101         clk_disable_unprepare(iris->xo_clk);
102         regulator_bulk_disable(iris->num_vregs, iris->vregs);
103 }
104 EXPORT_SYMBOL_GPL(qcom_iris_disable);
105
106 static int qcom_iris_probe(struct platform_device *pdev)
107 {
108         const struct iris_data *data;
109         struct qcom_wcnss *wcnss;
110         struct qcom_iris *iris;
111         int ret;
112         int i;
113
114         iris = devm_kzalloc(&pdev->dev, sizeof(struct qcom_iris), GFP_KERNEL);
115         if (!iris)
116                 return -ENOMEM;
117
118         data = of_device_get_match_data(&pdev->dev);
119         wcnss = dev_get_drvdata(pdev->dev.parent);
120
121         iris->xo_clk = devm_clk_get(&pdev->dev, "xo");
122         if (IS_ERR(iris->xo_clk)) {
123                 if (PTR_ERR(iris->xo_clk) != -EPROBE_DEFER)
124                         dev_err(&pdev->dev, "failed to acquire xo clk\n");
125                 return PTR_ERR(iris->xo_clk);
126         }
127
128         iris->num_vregs = data->num_vregs;
129         iris->vregs = devm_kcalloc(&pdev->dev,
130                                    iris->num_vregs,
131                                    sizeof(struct regulator_bulk_data),
132                                    GFP_KERNEL);
133         if (!iris->vregs)
134                 return -ENOMEM;
135
136         for (i = 0; i < iris->num_vregs; i++)
137                 iris->vregs[i].supply = data->vregs[i].name;
138
139         ret = devm_regulator_bulk_get(&pdev->dev, iris->num_vregs, iris->vregs);
140         if (ret) {
141                 dev_err(&pdev->dev, "failed to get regulators\n");
142                 return ret;
143         }
144
145         for (i = 0; i < iris->num_vregs; i++) {
146                 if (data->vregs[i].max_voltage)
147                         regulator_set_voltage(iris->vregs[i].consumer,
148                                               data->vregs[i].min_voltage,
149                                               data->vregs[i].max_voltage);
150
151                 if (data->vregs[i].load_uA)
152                         regulator_set_load(iris->vregs[i].consumer,
153                                            data->vregs[i].load_uA);
154         }
155
156         qcom_wcnss_assign_iris(wcnss, iris, data->use_48mhz_xo);
157
158         return 0;
159 }
160
161 static int qcom_iris_remove(struct platform_device *pdev)
162 {
163         struct qcom_wcnss *wcnss = dev_get_drvdata(pdev->dev.parent);
164
165         qcom_wcnss_assign_iris(wcnss, NULL, false);
166
167         return 0;
168 }
169
170 static const struct of_device_id iris_of_match[] = {
171         { .compatible = "qcom,wcn3620", .data = &wcn3620_data },
172         { .compatible = "qcom,wcn3660", .data = &wcn3660_data },
173         { .compatible = "qcom,wcn3680", .data = &wcn3680_data },
174         {}
175 };
176
177 static struct platform_driver wcnss_driver = {
178         .probe = qcom_iris_probe,
179         .remove = qcom_iris_remove,
180         .driver = {
181                 .name = "qcom-iris",
182                 .of_match_table = iris_of_match,
183         },
184 };
185
186 module_platform_driver(wcnss_driver);
187 MODULE_DESCRIPTION("Qualcomm Wireless Subsystem Iris driver");
188 MODULE_LICENSE("GPL v2");