mirror of
https://github.com/torvalds/linux.git
synced 2024-11-16 00:52:01 +00:00
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
|
|
/*
|
|
* TI PWM Subsystem driver
|
|
*
|
|
* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/io.h>
|
|
#include <linux/err.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <linux/of_device.h>
|
|
|
|
static const struct of_device_id pwmss_of_match[] = {
|
|
{ .compatible = "ti,am33xx-pwmss" },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(of, pwmss_of_match);
|
|
|
|
static int pwmss_probe(struct platform_device *pdev)
|
|
{
|
|
int ret;
|
|
struct device_node *node = pdev->dev.of_node;
|
|
|
|
pm_runtime_enable(&pdev->dev);
|
|
|
|
/* Populate all the child nodes here... */
|
|
ret = of_platform_populate(node, NULL, NULL, &pdev->dev);
|
|
if (ret)
|
|
dev_err(&pdev->dev, "no child node found\n");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int pwmss_remove(struct platform_device *pdev)
|
|
{
|
|
pm_runtime_disable(&pdev->dev);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver pwmss_driver = {
|
|
.driver = {
|
|
.name = "pwmss",
|
|
.of_match_table = pwmss_of_match,
|
|
},
|
|
.probe = pwmss_probe,
|
|
.remove = pwmss_remove,
|
|
};
|
|
|
|
module_platform_driver(pwmss_driver);
|
|
|
|
MODULE_DESCRIPTION("PWM Subsystem driver");
|
|
MODULE_AUTHOR("Texas Instruments");
|
|
MODULE_LICENSE("GPL");
|