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