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// 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.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);
}
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