Eric Lee / smarc-fsl-linux-kernel

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drivers/remoteproc/qcom_wcnss_iris.c 4.06 KB
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1802d0bee   Thomas Gleixner   treewide: Replace... 
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  // SPDX-License-Identifier: GPL-2.0-only
aed361adc   Bjorn Andersson   remoteproc: qcom:... 
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  /*
   * 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.
aed361adc   Bjorn Andersson   remoteproc: qcom:... 
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   */
  
  #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
  ");
  		goto disable_regulators;
  	}
  
  	return 0;
  
  disable_regulators:
  	regulator_bulk_disable(iris->num_vregs, iris->vregs);
  
  	return ret;
  }
aed361adc   Bjorn Andersson   remoteproc: qcom:... 
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  void qcom_iris_disable(struct qcom_iris *iris)
  {
  	clk_disable_unprepare(iris->xo_clk);
  	regulator_bulk_disable(iris->num_vregs, iris->vregs);
  }
aed361adc   Bjorn Andersson   remoteproc: qcom:... 
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  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
  ");
  		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
  ");
  		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,wcn3680", .data = &wcn3680_data },
  	{}
  };
af148e458   Javier Martinez Canillas   remoteproc: qcom:... 
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  MODULE_DEVICE_TABLE(of, iris_of_match);
aed361adc   Bjorn Andersson   remoteproc: qcom:... 
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6de1a507c
 
 Bjorn Andersson
 
remoteproc: qcom_...




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  struct platform_driver qcom_iris_driver = {









aed361adc
 
 Bjorn Andersson
 
remoteproc: qcom:...




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  	.probe = qcom_iris_probe,
  	.remove = qcom_iris_remove,
  	.driver = {
  		.name = "qcom-iris",
  		.of_match_table = iris_of_match,
  	},
  };