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206 lines
4.7 KiB
206 lines
4.7 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 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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static void qcom_iris_release(struct device *dev) |
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{ |
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struct qcom_iris *iris = container_of(dev, struct qcom_iris, dev); |
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of_node_put(iris->dev.of_node); |
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kfree(iris); |
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} |
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struct qcom_iris *qcom_iris_probe(struct device *parent, bool *use_48mhz_xo) |
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{ |
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const struct of_device_id *match; |
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const struct iris_data *data; |
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struct device_node *of_node; |
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struct qcom_iris *iris; |
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int ret; |
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int i; |
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of_node = of_get_child_by_name(parent->of_node, "iris"); |
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if (!of_node) { |
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dev_err(parent, "No child node \"iris\" found\n"); |
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return ERR_PTR(-EINVAL); |
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} |
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iris = kzalloc(sizeof(*iris), GFP_KERNEL); |
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if (!iris) { |
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of_node_put(of_node); |
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return ERR_PTR(-ENOMEM); |
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} |
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device_initialize(&iris->dev); |
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iris->dev.parent = parent; |
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iris->dev.release = qcom_iris_release; |
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iris->dev.of_node = of_node; |
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dev_set_name(&iris->dev, "%s.iris", dev_name(parent)); |
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ret = device_add(&iris->dev); |
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if (ret) { |
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put_device(&iris->dev); |
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return ERR_PTR(ret); |
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} |
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match = of_match_device(iris_of_match, &iris->dev); |
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if (!match) { |
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dev_err(&iris->dev, "no matching compatible for iris\n"); |
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ret = -EINVAL; |
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goto err_device_del; |
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} |
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data = match->data; |
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iris->xo_clk = devm_clk_get(&iris->dev, "xo"); |
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if (IS_ERR(iris->xo_clk)) { |
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ret = PTR_ERR(iris->xo_clk); |
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if (ret != -EPROBE_DEFER) |
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dev_err(&iris->dev, "failed to acquire xo clk\n"); |
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goto err_device_del; |
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} |
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iris->num_vregs = data->num_vregs; |
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iris->vregs = devm_kcalloc(&iris->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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ret = -ENOMEM; |
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goto err_device_del; |
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} |
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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(&iris->dev, iris->num_vregs, iris->vregs); |
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if (ret) { |
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dev_err(&iris->dev, "failed to get regulators\n"); |
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goto err_device_del; |
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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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*use_48mhz_xo = data->use_48mhz_xo; |
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return iris; |
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err_device_del: |
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device_del(&iris->dev); |
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return ERR_PTR(ret); |
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} |
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void qcom_iris_remove(struct qcom_iris *iris) |
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{ |
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device_del(&iris->dev); |
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}
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