// 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 int qcom_iris_probe(struct platform_device *pdev) { const struct iris_data *data; struct qcom_wcnss *wcnss; struct qcom_iris *iris; int ret; int i; iris = devm_kzalloc(&pdev->dev, sizeof(struct qcom_iris), GFP_KERNEL); if (!iris) return -ENOMEM; data = of_device_get_match_data(&pdev->dev); wcnss = dev_get_drvdata(pdev->dev.parent); iris->xo_clk = devm_clk_get(&pdev->dev, "xo"); if (IS_ERR(iris->xo_clk)) { if (PTR_ERR(iris->xo_clk) != -EPROBE_DEFER) dev_err(&pdev->dev, "failed to acquire xo clk\n"); return PTR_ERR(iris->xo_clk); } iris->num_vregs = data->num_vregs; iris->vregs = devm_kcalloc(&pdev->dev, iris->num_vregs, sizeof(struct regulator_bulk_data), GFP_KERNEL); if (!iris->vregs) return -ENOMEM; for (i = 0; i < iris->num_vregs; i++) iris->vregs[i].supply = data->vregs[i].name; ret = devm_regulator_bulk_get(&pdev->dev, iris->num_vregs, iris->vregs); if (ret) { dev_err(&pdev->dev, "failed to get regulators\n"); return ret; } 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); } qcom_wcnss_assign_iris(wcnss, iris, data->use_48mhz_xo); return 0; } static int qcom_iris_remove(struct platform_device *pdev) { struct qcom_wcnss *wcnss = dev_get_drvdata(pdev->dev.parent); qcom_wcnss_assign_iris(wcnss, NULL, false); return 0; } 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 }, {} }; MODULE_DEVICE_TABLE(of, iris_of_match); struct platform_driver qcom_iris_driver = { .probe = qcom_iris_probe, .remove = qcom_iris_remove, .driver = { .name = "qcom-iris", .of_match_table = iris_of_match, }, };