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176 lines
4.1 KiB
176 lines
4.1 KiB
// 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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