// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2018 Texas Instruments Incorporated - https://www.ti.com/
* Author: Tomi Valkeinen <[email protected]>
*/
#include <linux/console.h>
#include <linux/of.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_drv.h>
#include <drm/drm_fbdev_dma.h>
#include <drm/drm_gem_dma_helper.h>
#include <drm/drm_managed.h>
#include <drm/drm_module.h>
#include <drm/drm_probe_helper.h>
#include "tidss_dispc.h"
#include "tidss_drv.h"
#include "tidss_kms.h"
#include "tidss_irq.h"
/* Power management */
int tidss_runtime_get(struct tidss_device *tidss)
{
int r;
dev_dbg(tidss->dev, "%s\n", __func__);
r = pm_runtime_resume_and_get(tidss->dev);
WARN_ON(r < 0);
return r;
}
void tidss_runtime_put(struct tidss_device *tidss)
{
int r;
dev_dbg(tidss->dev, "%s\n", __func__);
pm_runtime_mark_last_busy(tidss->dev);
r = pm_runtime_put_autosuspend(tidss->dev);
WARN_ON(r < 0);
}
static int __maybe_unused tidss_pm_runtime_suspend(struct device *dev)
{
struct tidss_device *tidss = dev_get_drvdata(dev);
dev_dbg(dev, "%s\n", __func__);
return dispc_runtime_suspend(tidss->dispc);
}
static int __maybe_unused tidss_pm_runtime_resume(struct device *dev)
{
struct tidss_device *tidss = dev_get_drvdata(dev);
int r;
dev_dbg(dev, "%s\n", __func__);
r = dispc_runtime_resume(tidss->dispc);
if (r)
return r;
return 0;
}
static int __maybe_unused tidss_suspend(struct device *dev)
{
struct tidss_device *tidss = dev_get_drvdata(dev);
dev_dbg(dev, "%s\n", __func__);
return drm_mode_config_helper_suspend(&tidss->ddev);
}
static int __maybe_unused tidss_resume(struct device *dev)
{
struct tidss_device *tidss = dev_get_drvdata(dev);
dev_dbg(dev, "%s\n", __func__);
return drm_mode_config_helper_resume(&tidss->ddev);
}
static __maybe_unused const struct dev_pm_ops tidss_pm_ops = {
SET_SYSTEM_SLEEP_PM_OPS(tidss_suspend, tidss_resume)
SET_RUNTIME_PM_OPS(tidss_pm_runtime_suspend, tidss_pm_runtime_resume, NULL)
};
/* DRM device Information */
static void tidss_release(struct drm_device *ddev)
{
drm_kms_helper_poll_fini(ddev);
}
DEFINE_DRM_GEM_DMA_FOPS(tidss_fops);
static const struct drm_driver tidss_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC,
.fops = &tidss_fops,
.release = tidss_release,
DRM_GEM_DMA_DRIVER_OPS_VMAP,
.name = "tidss",
.desc = "TI Keystone DSS",
.date = "20180215",
.major = 1,
.minor = 0,
};
static int tidss_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct tidss_device *tidss;
struct drm_device *ddev;
int ret;
int irq;
dev_dbg(dev, "%s\n", __func__);
tidss = devm_drm_dev_alloc(&pdev->dev, &tidss_driver,
struct tidss_device, ddev);
if (IS_ERR(tidss))
return PTR_ERR(tidss);
ddev = &tidss->ddev;
tidss->dev = dev;
tidss->feat = of_device_get_match_data(dev);
platform_set_drvdata(pdev, tidss);
spin_lock_init(&tidss->wait_lock);
ret = dispc_init(tidss);
if (ret) {
dev_err(dev, "failed to initialize dispc: %d\n", ret);
return ret;
}
pm_runtime_enable(dev);
pm_runtime_set_autosuspend_delay(dev, 1000);
pm_runtime_use_autosuspend(dev);
#ifndef CONFIG_PM
/* If we don't have PM, we need to call resume manually */
dispc_runtime_resume(tidss->dispc);
#endif
ret = tidss_modeset_init(tidss);
if (ret < 0) {
if (ret != -EPROBE_DEFER)
dev_err(dev, "failed to init DRM/KMS (%d)\n", ret);
goto err_runtime_suspend;
}
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
ret = irq;
goto err_runtime_suspend;
}
tidss->irq = irq;
ret = tidss_irq_install(ddev, irq);
if (ret) {
dev_err(dev, "tidss_irq_install failed: %d\n", ret);
goto err_runtime_suspend;
}
drm_kms_helper_poll_init(ddev);
drm_mode_config_reset(ddev);
ret = drm_dev_register(ddev, 0);
if (ret) {
dev_err(dev, "failed to register DRM device\n");
goto err_irq_uninstall;
}
drm_fbdev_dma_setup(ddev, 32);
dev_dbg(dev, "%s done\n", __func__);
return 0;
err_irq_uninstall:
tidss_irq_uninstall(ddev);
err_runtime_suspend:
#ifndef CONFIG_PM
dispc_runtime_suspend(tidss->dispc);
#endif
pm_runtime_dont_use_autosuspend(dev);
pm_runtime_disable(dev);
return ret;
}
static void tidss_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct tidss_device *tidss = platform_get_drvdata(pdev);
struct drm_device *ddev = &tidss->ddev;
dev_dbg(dev, "%s\n", __func__);
drm_dev_unregister(ddev);
drm_atomic_helper_shutdown(ddev);
tidss_irq_uninstall(ddev);
#ifndef CONFIG_PM
/* If we don't have PM, we need to call suspend manually */
dispc_runtime_suspend(tidss->dispc);
#endif
pm_runtime_dont_use_autosuspend(dev);
pm_runtime_disable(dev);
/* devm allocated dispc goes away with the dev so mark it NULL */
dispc_remove(tidss);
dev_dbg(dev, "%s done\n", __func__);
}
static void tidss_shutdown(struct platform_device *pdev)
{
drm_atomic_helper_shutdown(platform_get_drvdata(pdev));
}
static const struct of_device_id tidss_of_table[] = {
{ .compatible = "ti,k2g-dss", .data = &dispc_k2g_feats, },
{ .compatible = "ti,am625-dss", .data = &dispc_am625_feats, },
{ .compatible = "ti,am62a7-dss", .data = &dispc_am62a7_feats, },
{ .compatible = "ti,am65x-dss", .data = &dispc_am65x_feats, },
{ .compatible = "ti,j721e-dss", .data = &dispc_j721e_feats, },
{ }
};
MODULE_DEVICE_TABLE(of, tidss_of_table);
static struct platform_driver tidss_platform_driver = {
.probe = tidss_probe,
.remove_new = tidss_remove,
.shutdown = tidss_shutdown,
.driver = {
.name = "tidss",
.pm = pm_ptr(&tidss_pm_ops),
.of_match_table = tidss_of_table,
.suppress_bind_attrs = true,
},
};
drm_module_platform_driver(tidss_platform_driver);
MODULE_AUTHOR("Tomi Valkeinen <[email protected]>");
MODULE_DESCRIPTION("TI Keystone DSS Driver");
MODULE_LICENSE("GPL v2");