294 lines
6.2 KiB
C
294 lines
6.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2024 NXP
|
|
*/
|
|
|
|
#include <linux/clk.h>
|
|
#include <linux/component.h>
|
|
#include <linux/device.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/mod_devicetable.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/pm.h>
|
|
#include <linux/pm_runtime.h>
|
|
|
|
#include <drm/clients/drm_client_setup.h>
|
|
#include <drm/drm_atomic_helper.h>
|
|
#include <drm/drm_drv.h>
|
|
#include <drm/drm_fbdev_dma.h>
|
|
#include <drm/drm_fourcc.h>
|
|
#include <drm/drm_gem_dma_helper.h>
|
|
#include <drm/drm_managed.h>
|
|
#include <drm/drm_modeset_helper.h>
|
|
#include <drm/drm_of.h>
|
|
|
|
#include "dc-de.h"
|
|
#include "dc-drv.h"
|
|
#include "dc-pe.h"
|
|
|
|
struct dc_priv {
|
|
struct drm_device *drm;
|
|
struct clk *clk_cfg;
|
|
};
|
|
|
|
DEFINE_DRM_GEM_DMA_FOPS(dc_drm_driver_fops);
|
|
|
|
static struct drm_driver dc_drm_driver = {
|
|
.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
|
|
DRM_GEM_DMA_DRIVER_OPS,
|
|
DRM_FBDEV_DMA_DRIVER_OPS,
|
|
.fops = &dc_drm_driver_fops,
|
|
.name = "imx8-dc",
|
|
.desc = "i.MX8 DC DRM graphics",
|
|
.major = 1,
|
|
.minor = 0,
|
|
.patchlevel = 0,
|
|
};
|
|
|
|
static void
|
|
dc_add_components(struct device *dev, struct component_match **matchptr)
|
|
{
|
|
struct device_node *child, *grandchild;
|
|
|
|
for_each_available_child_of_node(dev->of_node, child) {
|
|
/* The interrupt controller is not a component. */
|
|
if (of_device_is_compatible(child, "fsl,imx8qxp-dc-intc"))
|
|
continue;
|
|
|
|
drm_of_component_match_add(dev, matchptr, component_compare_of,
|
|
child);
|
|
|
|
for_each_available_child_of_node(child, grandchild)
|
|
drm_of_component_match_add(dev, matchptr,
|
|
component_compare_of,
|
|
grandchild);
|
|
}
|
|
}
|
|
|
|
static int dc_drm_component_bind_all(struct dc_drm_device *dc_drm)
|
|
{
|
|
struct drm_device *drm = &dc_drm->base;
|
|
int ret;
|
|
|
|
ret = component_bind_all(drm->dev, dc_drm);
|
|
if (ret)
|
|
return ret;
|
|
|
|
dc_de_post_bind(dc_drm);
|
|
dc_pe_post_bind(dc_drm);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dc_drm_component_unbind_all(void *ptr)
|
|
{
|
|
struct dc_drm_device *dc_drm = ptr;
|
|
struct drm_device *drm = &dc_drm->base;
|
|
|
|
component_unbind_all(drm->dev, dc_drm);
|
|
}
|
|
|
|
static int dc_drm_bind(struct device *dev)
|
|
{
|
|
struct dc_priv *priv = dev_get_drvdata(dev);
|
|
struct dc_drm_device *dc_drm;
|
|
struct drm_device *drm;
|
|
int ret;
|
|
|
|
dc_drm = devm_drm_dev_alloc(dev, &dc_drm_driver, struct dc_drm_device,
|
|
base);
|
|
if (IS_ERR(dc_drm))
|
|
return PTR_ERR(dc_drm);
|
|
|
|
drm = &dc_drm->base;
|
|
|
|
ret = dc_drm_component_bind_all(dc_drm);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = devm_add_action_or_reset(dev, dc_drm_component_unbind_all,
|
|
dc_drm);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = dc_kms_init(dc_drm);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = drm_dev_register(drm, 0);
|
|
if (ret) {
|
|
dev_err(dev, "failed to register drm device: %d\n", ret);
|
|
goto err;
|
|
}
|
|
|
|
drm_client_setup_with_fourcc(drm, DRM_FORMAT_XRGB8888);
|
|
|
|
priv->drm = drm;
|
|
|
|
return 0;
|
|
|
|
err:
|
|
dc_kms_uninit(dc_drm);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void dc_drm_unbind(struct device *dev)
|
|
{
|
|
struct dc_priv *priv = dev_get_drvdata(dev);
|
|
struct dc_drm_device *dc_drm = to_dc_drm_device(priv->drm);
|
|
struct drm_device *drm = &dc_drm->base;
|
|
|
|
priv->drm = NULL;
|
|
drm_dev_unplug(drm);
|
|
dc_kms_uninit(dc_drm);
|
|
drm_atomic_helper_shutdown(drm);
|
|
}
|
|
|
|
static const struct component_master_ops dc_drm_ops = {
|
|
.bind = dc_drm_bind,
|
|
.unbind = dc_drm_unbind,
|
|
};
|
|
|
|
static int dc_probe(struct platform_device *pdev)
|
|
{
|
|
struct component_match *match = NULL;
|
|
struct dc_priv *priv;
|
|
int ret;
|
|
|
|
priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
priv->clk_cfg = devm_clk_get(&pdev->dev, NULL);
|
|
if (IS_ERR(priv->clk_cfg))
|
|
return dev_err_probe(&pdev->dev, PTR_ERR(priv->clk_cfg),
|
|
"failed to get cfg clock\n");
|
|
|
|
dev_set_drvdata(&pdev->dev, priv);
|
|
|
|
ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = devm_pm_runtime_enable(&pdev->dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = devm_of_platform_populate(&pdev->dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
dc_add_components(&pdev->dev, &match);
|
|
|
|
ret = component_master_add_with_match(&pdev->dev, &dc_drm_ops, match);
|
|
if (ret)
|
|
return dev_err_probe(&pdev->dev, ret,
|
|
"failed to add component master\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void dc_remove(struct platform_device *pdev)
|
|
{
|
|
component_master_del(&pdev->dev, &dc_drm_ops);
|
|
}
|
|
|
|
static int dc_runtime_suspend(struct device *dev)
|
|
{
|
|
struct dc_priv *priv = dev_get_drvdata(dev);
|
|
|
|
clk_disable_unprepare(priv->clk_cfg);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dc_runtime_resume(struct device *dev)
|
|
{
|
|
struct dc_priv *priv = dev_get_drvdata(dev);
|
|
int ret;
|
|
|
|
ret = clk_prepare_enable(priv->clk_cfg);
|
|
if (ret)
|
|
dev_err(dev, "failed to enable cfg clock: %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int dc_suspend(struct device *dev)
|
|
{
|
|
struct dc_priv *priv = dev_get_drvdata(dev);
|
|
|
|
return drm_mode_config_helper_suspend(priv->drm);
|
|
}
|
|
|
|
static int dc_resume(struct device *dev)
|
|
{
|
|
struct dc_priv *priv = dev_get_drvdata(dev);
|
|
|
|
return drm_mode_config_helper_resume(priv->drm);
|
|
}
|
|
|
|
static void dc_shutdown(struct platform_device *pdev)
|
|
{
|
|
struct dc_priv *priv = dev_get_drvdata(&pdev->dev);
|
|
|
|
drm_atomic_helper_shutdown(priv->drm);
|
|
}
|
|
|
|
static const struct dev_pm_ops dc_pm_ops = {
|
|
RUNTIME_PM_OPS(dc_runtime_suspend, dc_runtime_resume, NULL)
|
|
SYSTEM_SLEEP_PM_OPS(dc_suspend, dc_resume)
|
|
};
|
|
|
|
static const struct of_device_id dc_dt_ids[] = {
|
|
{ .compatible = "fsl,imx8qxp-dc", },
|
|
{ /* sentinel */ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, dc_dt_ids);
|
|
|
|
static struct platform_driver dc_driver = {
|
|
.probe = dc_probe,
|
|
.remove = dc_remove,
|
|
.shutdown = dc_shutdown,
|
|
.driver = {
|
|
.name = "imx8-dc",
|
|
.of_match_table = dc_dt_ids,
|
|
.pm = pm_sleep_ptr(&dc_pm_ops),
|
|
},
|
|
};
|
|
|
|
static struct platform_driver * const dc_drivers[] = {
|
|
&dc_cf_driver,
|
|
&dc_de_driver,
|
|
&dc_ed_driver,
|
|
&dc_fg_driver,
|
|
&dc_fl_driver,
|
|
&dc_fw_driver,
|
|
&dc_ic_driver,
|
|
&dc_lb_driver,
|
|
&dc_pe_driver,
|
|
&dc_tc_driver,
|
|
&dc_driver,
|
|
};
|
|
|
|
static int __init dc_drm_init(void)
|
|
{
|
|
return platform_register_drivers(dc_drivers, ARRAY_SIZE(dc_drivers));
|
|
}
|
|
|
|
static void __exit dc_drm_exit(void)
|
|
{
|
|
platform_unregister_drivers(dc_drivers, ARRAY_SIZE(dc_drivers));
|
|
}
|
|
|
|
module_init(dc_drm_init);
|
|
module_exit(dc_drm_exit);
|
|
|
|
MODULE_DESCRIPTION("i.MX8 Display Controller DRM Driver");
|
|
MODULE_AUTHOR("Liu Ying <victor.liu@nxp.com>");
|
|
MODULE_LICENSE("GPL");
|