From 7cabf9251a2f38db1ad1e49be2738955ab61d381 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Sun, 1 Sep 2019 17:58:22 -0500 Subject: bus/ti-pwmss: move TI PWMSS driver from PWM to bus subsystem 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 Signed-off-by: Jonathan Cameron --- drivers/bus/ti-pwmss.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 drivers/bus/ti-pwmss.c (limited to 'drivers/bus/ti-pwmss.c') diff --git a/drivers/bus/ti-pwmss.c b/drivers/bus/ti-pwmss.c new file mode 100644 index 000000000000..e9c26c94251b --- /dev/null +++ b/drivers/bus/ti-pwmss.c @@ -0,0 +1,55 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * TI PWM Subsystem driver + * + * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/ + */ + +#include +#include +#include +#include +#include +#include + +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"); -- cgit v1.2.3