1// SPDX-License-Identifier: GPL-2.0-only
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.
8 */
9
10#include <linux/clk.h>
11#include <linux/kernel.h>
12#include <linux/module.h>
13#include <linux/of.h>
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
20struct qcom_iris {
21 struct device dev;
22
23 struct clk *xo_clk;
24
25 struct regulator_bulk_data *vregs;
26 size_t num_vregs;
27};
28
29struct iris_data {
30 const struct wcnss_vreg_info *vregs;
31 size_t num_vregs;
32
33 bool use_48mhz_xo;
34};
35
36static 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
47static 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
58static 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
69int qcom_iris_enable(struct qcom_iris *iris)
70{
71 int ret;
72
73 ret = regulator_bulk_enable(num_consumers: iris->num_vregs, consumers: iris->vregs);
74 if (ret)
75 return ret;
76
77 ret = clk_prepare_enable(clk: iris->xo_clk);
78 if (ret) {
79 dev_err(&iris->dev, "failed to enable xo clk\n");
80 goto disable_regulators;
81 }
82
83 return 0;
84
85disable_regulators:
86 regulator_bulk_disable(num_consumers: iris->num_vregs, consumers: iris->vregs);
87
88 return ret;
89}
90
91void qcom_iris_disable(struct qcom_iris *iris)
92{
93 clk_disable_unprepare(clk: iris->xo_clk);
94 regulator_bulk_disable(num_consumers: iris->num_vregs, consumers: iris->vregs);
95}
96
97static 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
105static 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(node: iris->dev.of_node);
110 kfree(objp: iris);
111}
112
113struct qcom_iris *qcom_iris_probe(struct device *parent, bool *use_48mhz_xo)
114{
115 const struct of_device_id *match;
116 const struct iris_data *data;
117 struct device_node *of_node;
118 struct qcom_iris *iris;
119 int ret;
120 int i;
121
122 of_node = of_get_child_by_name(node: parent->of_node, name: "iris");
123 if (!of_node) {
124 dev_err(parent, "No child node \"iris\" found\n");
125 return ERR_PTR(error: -EINVAL);
126 }
127
128 iris = kzalloc(sizeof(*iris), GFP_KERNEL);
129 if (!iris) {
130 of_node_put(node: of_node);
131 return ERR_PTR(error: -ENOMEM);
132 }
133
134 device_initialize(dev: &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(dev: &iris->dev, name: "%s.iris", dev_name(dev: parent));
140
141 ret = device_add(dev: &iris->dev);
142 if (ret) {
143 put_device(dev: &iris->dev);
144 return ERR_PTR(error: ret);
145 }
146
147 match = of_match_device(matches: iris_of_match, dev: &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 }
153
154 data = match->data;
155
156 iris->xo_clk = devm_clk_get(dev: &iris->dev, id: "xo");
157 if (IS_ERR(ptr: iris->xo_clk)) {
158 ret = dev_err_probe(dev: &iris->dev, err: PTR_ERR(ptr: iris->xo_clk),
159 fmt: "failed to acquire xo clk\n");
160 goto err_device_del;
161 }
162
163 iris->num_vregs = data->num_vregs;
164 iris->vregs = devm_kcalloc(dev: &iris->dev,
165 n: iris->num_vregs,
166 size: sizeof(struct regulator_bulk_data),
167 GFP_KERNEL);
168 if (!iris->vregs) {
169 ret = -ENOMEM;
170 goto err_device_del;
171 }
172
173 for (i = 0; i < iris->num_vregs; i++)
174 iris->vregs[i].supply = data->vregs[i].name;
175
176 ret = devm_regulator_bulk_get(dev: &iris->dev, num_consumers: iris->num_vregs, consumers: iris->vregs);
177 if (ret) {
178 dev_err(&iris->dev, "failed to get regulators\n");
179 goto err_device_del;
180 }
181
182 for (i = 0; i < iris->num_vregs; i++) {
183 if (data->vregs[i].max_voltage)
184 regulator_set_voltage(regulator: iris->vregs[i].consumer,
185 min_uV: data->vregs[i].min_voltage,
186 max_uV: data->vregs[i].max_voltage);
187
188 if (data->vregs[i].load_uA)
189 regulator_set_load(regulator: iris->vregs[i].consumer,
190 load_uA: data->vregs[i].load_uA);
191 }
192
193 *use_48mhz_xo = data->use_48mhz_xo;
194
195 return iris;
196
197err_device_del:
198 device_del(dev: &iris->dev);
199 put_device(dev: &iris->dev);
200
201 return ERR_PTR(error: ret);
202}
203
204void qcom_iris_remove(struct qcom_iris *iris)
205{
206 device_del(dev: &iris->dev);
207 put_device(dev: &iris->dev);
208}
209

source code of linux/drivers/remoteproc/qcom_wcnss_iris.c