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7cabf9251a
The TI PWMSS driver is a simple bus driver for providing power power management for the PWM peripherals on TI AM33xx SoCs, namely eCAP, eHRPWM and eQEP. The eQEP is a counter rather than a PWM, so it does not make sense to have the bus driver in the PWM subsystem since the PWMSS is not exclusive to PWM devices. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* TI PWM Subsystem driver
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*
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* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/err.h>
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#include <linux/pm_runtime.h>
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#include <linux/of_device.h>
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static const struct of_device_id pwmss_of_match[] = {
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{ .compatible = "ti,am33xx-pwmss" },
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{},
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};
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MODULE_DEVICE_TABLE(of, pwmss_of_match);
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static int pwmss_probe(struct platform_device *pdev)
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{
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int ret;
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struct device_node *node = pdev->dev.of_node;
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pm_runtime_enable(&pdev->dev);
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/* Populate all the child nodes here... */
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ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
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if (ret)
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dev_err(&pdev->dev, "no child node found\n");
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return ret;
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}
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static int pwmss_remove(struct platform_device *pdev)
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{
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pm_runtime_disable(&pdev->dev);
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return 0;
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}
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static struct platform_driver pwmss_driver = {
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.driver = {
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.name = "pwmss",
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.of_match_table = pwmss_of_match,
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},
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.probe = pwmss_probe,
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.remove = pwmss_remove,
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};
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module_platform_driver(pwmss_driver);
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MODULE_DESCRIPTION("PWM Subsystem driver");
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MODULE_AUTHOR("Texas Instruments");
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MODULE_LICENSE("GPL");
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