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// SPDX-License-Identifier: GPL-2.0
/*
* (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
* Author: James.Qian.Wang <james.qian.wang@arm.com>
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <drm/drm_client_setup.h>
#include <drm/drm_module.h>
#include <drm/drm_of.h>
#include "komeda_dev.h"
#include "komeda_kms.h"
struct komeda_drv {
struct komeda_dev *mdev;
struct komeda_kms_dev *kms;
};
struct komeda_dev *dev_to_mdev(struct device *dev)
{
struct komeda_drv *mdrv = dev_get_drvdata(dev);
return mdrv ? mdrv->mdev : NULL;
}
static void komeda_platform_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct komeda_drv *mdrv = dev_get_drvdata(dev);
komeda_kms_detach(mdrv->kms);
if (pm_runtime_enabled(dev))
pm_runtime_disable(dev);
else
komeda_dev_suspend(mdrv->mdev);
komeda_dev_destroy(mdrv->mdev);
dev_set_drvdata(dev, NULL);
devm_kfree(dev, mdrv);
}
static void komeda_platform_shutdown(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct komeda_drv *mdrv = dev_get_drvdata(dev);
komeda_kms_shutdown(mdrv->kms);
}
static int komeda_platform_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct komeda_drv *mdrv;
int err;
err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40));
if (err)
return dev_err_probe(dev, err, "DMA mask error\n");
mdrv = devm_kzalloc(dev, sizeof(*mdrv), GFP_KERNEL);
if (!mdrv)
return -ENOMEM;
mdrv->mdev = komeda_dev_create(dev);
if (IS_ERR(mdrv->mdev)) {
err = PTR_ERR(mdrv->mdev);
goto free_mdrv;
}
pm_runtime_enable(dev);
if (!pm_runtime_enabled(dev))
komeda_dev_resume(mdrv->mdev);
mdrv->kms = komeda_kms_attach(mdrv->mdev);
if (IS_ERR(mdrv->kms)) {
err = PTR_ERR(mdrv->kms);
goto destroy_mdev;
}
dev_set_drvdata(dev, mdrv);
drm_client_setup(&mdrv->kms->base, NULL);
return 0;
destroy_mdev:
if (pm_runtime_enabled(dev))
pm_runtime_disable(dev);
else
komeda_dev_suspend(mdrv->mdev);
komeda_dev_destroy(mdrv->mdev);
free_mdrv:
devm_kfree(dev, mdrv);
return err;
}
static const struct of_device_id komeda_of_match[] = {
{ .compatible = "arm,mali-d71", .data = d71_identify, },
{ .compatible = "arm,mali-d32", .data = d71_identify, },
{},
};
MODULE_DEVICE_TABLE(of, komeda_of_match);
static int __maybe_unused komeda_rt_pm_suspend(struct device *dev)
{
struct komeda_drv *mdrv = dev_get_drvdata(dev);
return komeda_dev_suspend(mdrv->mdev);
}
static int __maybe_unused komeda_rt_pm_resume(struct device *dev)
{
struct komeda_drv *mdrv = dev_get_drvdata(dev);
return komeda_dev_resume(mdrv->mdev);
}
static int __maybe_unused komeda_pm_suspend(struct device *dev)
{
struct komeda_drv *mdrv = dev_get_drvdata(dev);
int res;
res = drm_mode_config_helper_suspend(&mdrv->kms->base);
if (!pm_runtime_status_suspended(dev))
komeda_dev_suspend(mdrv->mdev);
return res;
}
static int __maybe_unused komeda_pm_resume(struct device *dev)
{
struct komeda_drv *mdrv = dev_get_drvdata(dev);
if (!pm_runtime_status_suspended(dev))
komeda_dev_resume(mdrv->mdev);
return drm_mode_config_helper_resume(&mdrv->kms->base);
}
static const struct dev_pm_ops komeda_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(komeda_pm_suspend, komeda_pm_resume)
SET_RUNTIME_PM_OPS(komeda_rt_pm_suspend, komeda_rt_pm_resume, NULL)
};
static struct platform_driver komeda_platform_driver = {
.probe = komeda_platform_probe,
.remove = komeda_platform_remove,
.shutdown = komeda_platform_shutdown,
.driver = {
.name = "komeda",
.of_match_table = komeda_of_match,
.pm = &komeda_pm_ops,
},
};
drm_module_platform_driver(komeda_platform_driver);
MODULE_AUTHOR("James.Qian.Wang <james.qian.wang@arm.com>");
MODULE_DESCRIPTION("Komeda KMS driver");
MODULE_LICENSE("GPL v2");
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