| // 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 = dev_err_probe(&iris->dev, PTR_ERR(iris->xo_clk), |
| "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); |
| } |