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![Stephan Gerhold](/assets/img/avatar_default.png)
WCN3660B is a variant of WCN3660, but with the same regulator requirements as WCN3620/WCN3680. As far as qcom_wcnss_iris is concerned we can just use qcom,wcn3680 (wcn3680_data). However, a separate compatible is needed for WCN3660B because the wcn36xx driver uses it to enable chip-specific functionality. In particular, it enables 802.11ac for qcom,wcn3680 which is not supported by WCN3660B. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Link: https://lore.kernel.org/r/20210106102134.59801-3-stephan@gerhold.net Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
176 lines
4.1 KiB
C
176 lines
4.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Qualcomm Wireless Connectivity Subsystem Iris driver
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*
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* Copyright (C) 2016 Linaro Ltd
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* Copyright (C) 2014 Sony Mobile Communications AB
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* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
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*/
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#include <linux/clk.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/consumer.h>
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#include "qcom_wcnss.h"
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struct qcom_iris {
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struct device *dev;
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struct clk *xo_clk;
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struct regulator_bulk_data *vregs;
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size_t num_vregs;
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};
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struct iris_data {
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const struct wcnss_vreg_info *vregs;
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size_t num_vregs;
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bool use_48mhz_xo;
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};
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static const struct iris_data wcn3620_data = {
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.vregs = (struct wcnss_vreg_info[]) {
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{ "vddxo", 1800000, 1800000, 10000 },
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{ "vddrfa", 1300000, 1300000, 100000 },
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{ "vddpa", 3300000, 3300000, 515000 },
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{ "vdddig", 1800000, 1800000, 10000 },
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},
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.num_vregs = 4,
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.use_48mhz_xo = false,
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};
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static const struct iris_data wcn3660_data = {
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.vregs = (struct wcnss_vreg_info[]) {
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{ "vddxo", 1800000, 1800000, 10000 },
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{ "vddrfa", 1300000, 1300000, 100000 },
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{ "vddpa", 2900000, 3000000, 515000 },
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{ "vdddig", 1200000, 1225000, 10000 },
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},
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.num_vregs = 4,
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.use_48mhz_xo = true,
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};
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static const struct iris_data wcn3680_data = {
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.vregs = (struct wcnss_vreg_info[]) {
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{ "vddxo", 1800000, 1800000, 10000 },
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{ "vddrfa", 1300000, 1300000, 100000 },
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{ "vddpa", 3300000, 3300000, 515000 },
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{ "vdddig", 1800000, 1800000, 10000 },
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},
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.num_vregs = 4,
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.use_48mhz_xo = true,
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};
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int qcom_iris_enable(struct qcom_iris *iris)
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{
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int ret;
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ret = regulator_bulk_enable(iris->num_vregs, iris->vregs);
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if (ret)
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return ret;
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ret = clk_prepare_enable(iris->xo_clk);
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if (ret) {
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dev_err(iris->dev, "failed to enable xo clk\n");
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goto disable_regulators;
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}
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return 0;
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disable_regulators:
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regulator_bulk_disable(iris->num_vregs, iris->vregs);
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return ret;
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}
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void qcom_iris_disable(struct qcom_iris *iris)
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{
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clk_disable_unprepare(iris->xo_clk);
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regulator_bulk_disable(iris->num_vregs, iris->vregs);
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}
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static int qcom_iris_probe(struct platform_device *pdev)
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{
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const struct iris_data *data;
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struct qcom_wcnss *wcnss;
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struct qcom_iris *iris;
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int ret;
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int i;
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iris = devm_kzalloc(&pdev->dev, sizeof(struct qcom_iris), GFP_KERNEL);
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if (!iris)
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return -ENOMEM;
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data = of_device_get_match_data(&pdev->dev);
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wcnss = dev_get_drvdata(pdev->dev.parent);
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iris->xo_clk = devm_clk_get(&pdev->dev, "xo");
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if (IS_ERR(iris->xo_clk)) {
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if (PTR_ERR(iris->xo_clk) != -EPROBE_DEFER)
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dev_err(&pdev->dev, "failed to acquire xo clk\n");
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return PTR_ERR(iris->xo_clk);
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}
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iris->num_vregs = data->num_vregs;
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iris->vregs = devm_kcalloc(&pdev->dev,
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iris->num_vregs,
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sizeof(struct regulator_bulk_data),
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GFP_KERNEL);
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if (!iris->vregs)
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return -ENOMEM;
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for (i = 0; i < iris->num_vregs; i++)
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iris->vregs[i].supply = data->vregs[i].name;
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ret = devm_regulator_bulk_get(&pdev->dev, iris->num_vregs, iris->vregs);
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if (ret) {
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dev_err(&pdev->dev, "failed to get regulators\n");
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return ret;
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}
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for (i = 0; i < iris->num_vregs; i++) {
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if (data->vregs[i].max_voltage)
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regulator_set_voltage(iris->vregs[i].consumer,
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data->vregs[i].min_voltage,
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data->vregs[i].max_voltage);
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if (data->vregs[i].load_uA)
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regulator_set_load(iris->vregs[i].consumer,
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data->vregs[i].load_uA);
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}
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qcom_wcnss_assign_iris(wcnss, iris, data->use_48mhz_xo);
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return 0;
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}
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static int qcom_iris_remove(struct platform_device *pdev)
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{
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struct qcom_wcnss *wcnss = dev_get_drvdata(pdev->dev.parent);
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qcom_wcnss_assign_iris(wcnss, NULL, false);
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return 0;
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}
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static const struct of_device_id iris_of_match[] = {
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{ .compatible = "qcom,wcn3620", .data = &wcn3620_data },
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{ .compatible = "qcom,wcn3660", .data = &wcn3660_data },
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{ .compatible = "qcom,wcn3660b", .data = &wcn3680_data },
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{ .compatible = "qcom,wcn3680", .data = &wcn3680_data },
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{}
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};
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MODULE_DEVICE_TABLE(of, iris_of_match);
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struct platform_driver qcom_iris_driver = {
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.probe = qcom_iris_probe,
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.remove = qcom_iris_remove,
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.driver = {
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.name = "qcom-iris",
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.of_match_table = iris_of_match,
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},
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};
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