98 lines
2.1 KiB
C
98 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright 2019 NXP.
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*/
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/platform_device.h>
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#include "fsl_dsp_audiomix.h"
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struct imx_audiomix_dsp_data {
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void __iomem *base;
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};
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void imx_audiomix_dsp_start(struct imx_audiomix_dsp_data *data)
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{
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u32 val;
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val = readl(data->base + AudioDSP_REG2);
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val &= ~AudioDSP_REG2_RUNSTALL;
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writel(val, data->base + AudioDSP_REG2);
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}
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EXPORT_SYMBOL(imx_audiomix_dsp_start);
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void imx_audiomix_dsp_stall(struct imx_audiomix_dsp_data *data)
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{
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u32 val;
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val = readl(data->base + AudioDSP_REG2);
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val |= AudioDSP_REG2_RUNSTALL;
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writel(val, data->base + AudioDSP_REG2);
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}
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EXPORT_SYMBOL(imx_audiomix_dsp_stall);
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void imx_audiomix_dsp_pid_set(struct imx_audiomix_dsp_data *data, u32 val)
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{
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writel(val, data->base + AudioDSP_REG3);
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}
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EXPORT_SYMBOL(imx_audiomix_dsp_pid_set);
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bool imx_audiomix_dsp_reset(struct imx_audiomix_dsp_data *data)
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{
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u32 val;
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val = readl(data->base + AudioDSP_REG3);
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if (val == 0)
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return true;
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else
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return false;
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}
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EXPORT_SYMBOL(imx_audiomix_dsp_reset);
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bool imx_audiomix_dsp_pwaitmode(struct imx_audiomix_dsp_data *data)
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{
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u32 val;
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val = readl(data->base + AudioDSP_REG2);
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if (val & AudioDSP_REG2_PWAITMODE)
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return true;
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else
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return false;
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}
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EXPORT_SYMBOL(imx_audiomix_dsp_pwaitmode);
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static int imx_audiomix_dsp_probe(struct platform_device *pdev)
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{
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struct imx_audiomix_dsp_data *drvdata;
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struct device *dev = &pdev->dev;
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drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL);
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if (drvdata == NULL)
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return -ENOMEM;
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drvdata->base = dev_get_drvdata(dev->parent);
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platform_set_drvdata(pdev, drvdata);
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return 0;
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}
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static const struct of_device_id imx_audiomix_dsp_dt_ids[] = {
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{ .compatible = "fsl,audiomix-dsp", },
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{ /* sentinel */ },
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};
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static struct platform_driver imx_audiomix_dsp_driver = {
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.probe = imx_audiomix_dsp_probe,
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.driver = {
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.name = "audiomix-dsp",
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.of_match_table = imx_audiomix_dsp_dt_ids,
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},
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};
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module_platform_driver(imx_audiomix_dsp_driver);
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