mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
9021c317b7
This adds initial support for iMX8MQ's Display Controller Subsystem (DCSS). Some of its capabilities include: * 4K@60fps; * HDR10; * one graphics and 2 video pipelines; * on-the-fly decompression of compressed video and graphics; The reference manual can be found here: https://www.nxp.com/webapp/Download?colCode=IMX8MDQLQRM The current patch adds only basic functionality: one primary plane for graphics, linear, tiled and super-tiled buffers support (no graphics decompression yet), no HDR10 and no video planes. Video planes support and HDR10 will be added in subsequent patches once per-plane de-gamma/CSC/gamma support is in. Signed-off-by: Laurentiu Palcu <laurentiu.palcu@nxp.com> Reviewed-by: Lucas Stach <l.stach@pengutronix.de> Acked-by: Guido Günther <agx@sigxcpu.org> Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Link: https://patchwork.freedesktop.org/patch/msgid/20200731081836.3048-3-laurentiu.palcu@oss.nxp.com
139 lines
2.7 KiB
C
139 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright 2019 NXP.
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/platform_device.h>
|
|
#include <drm/drm_of.h>
|
|
|
|
#include "dcss-dev.h"
|
|
#include "dcss-kms.h"
|
|
|
|
struct dcss_drv {
|
|
struct dcss_dev *dcss;
|
|
struct dcss_kms_dev *kms;
|
|
};
|
|
|
|
struct dcss_dev *dcss_drv_dev_to_dcss(struct device *dev)
|
|
{
|
|
struct dcss_drv *mdrv = dev_get_drvdata(dev);
|
|
|
|
return mdrv ? mdrv->dcss : NULL;
|
|
}
|
|
|
|
struct drm_device *dcss_drv_dev_to_drm(struct device *dev)
|
|
{
|
|
struct dcss_drv *mdrv = dev_get_drvdata(dev);
|
|
|
|
return mdrv ? &mdrv->kms->base : NULL;
|
|
}
|
|
|
|
static int dcss_drv_platform_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct device_node *remote;
|
|
struct dcss_drv *mdrv;
|
|
int err = 0;
|
|
bool hdmi_output = true;
|
|
|
|
if (!dev->of_node)
|
|
return -ENODEV;
|
|
|
|
remote = of_graph_get_remote_node(dev->of_node, 0, 0);
|
|
if (!remote)
|
|
return -ENODEV;
|
|
|
|
hdmi_output = !of_device_is_compatible(remote, "fsl,imx8mq-nwl-dsi");
|
|
|
|
of_node_put(remote);
|
|
|
|
mdrv = kzalloc(sizeof(*mdrv), GFP_KERNEL);
|
|
if (!mdrv)
|
|
return -ENOMEM;
|
|
|
|
mdrv->dcss = dcss_dev_create(dev, hdmi_output);
|
|
if (IS_ERR(mdrv->dcss)) {
|
|
err = PTR_ERR(mdrv->dcss);
|
|
goto err;
|
|
}
|
|
|
|
dev_set_drvdata(dev, mdrv);
|
|
|
|
mdrv->kms = dcss_kms_attach(mdrv->dcss);
|
|
if (IS_ERR(mdrv->kms)) {
|
|
err = PTR_ERR(mdrv->kms);
|
|
goto dcss_shutoff;
|
|
}
|
|
|
|
return 0;
|
|
|
|
dcss_shutoff:
|
|
dcss_dev_destroy(mdrv->dcss);
|
|
|
|
dev_set_drvdata(dev, NULL);
|
|
|
|
err:
|
|
kfree(mdrv);
|
|
return err;
|
|
}
|
|
|
|
static int dcss_drv_platform_remove(struct platform_device *pdev)
|
|
{
|
|
struct dcss_drv *mdrv = dev_get_drvdata(&pdev->dev);
|
|
|
|
if (!mdrv)
|
|
return 0;
|
|
|
|
dcss_kms_detach(mdrv->kms);
|
|
dcss_dev_destroy(mdrv->dcss);
|
|
|
|
dev_set_drvdata(&pdev->dev, NULL);
|
|
|
|
kfree(mdrv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct dcss_type_data dcss_types[] = {
|
|
[DCSS_IMX8MQ] = {
|
|
.name = "DCSS_IMX8MQ",
|
|
.blkctl_ofs = 0x2F000,
|
|
.ctxld_ofs = 0x23000,
|
|
.dtg_ofs = 0x20000,
|
|
.scaler_ofs = 0x1C000,
|
|
.ss_ofs = 0x1B000,
|
|
.dpr_ofs = 0x18000,
|
|
},
|
|
};
|
|
|
|
static const struct of_device_id dcss_of_match[] = {
|
|
{ .compatible = "nxp,imx8mq-dcss", .data = &dcss_types[DCSS_IMX8MQ], },
|
|
{},
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, dcss_of_match);
|
|
|
|
static const struct dev_pm_ops dcss_dev_pm = {
|
|
SET_SYSTEM_SLEEP_PM_OPS(dcss_dev_suspend, dcss_dev_resume)
|
|
SET_RUNTIME_PM_OPS(dcss_dev_runtime_suspend,
|
|
dcss_dev_runtime_resume, NULL)
|
|
};
|
|
|
|
static struct platform_driver dcss_platform_driver = {
|
|
.probe = dcss_drv_platform_probe,
|
|
.remove = dcss_drv_platform_remove,
|
|
.driver = {
|
|
.name = "imx-dcss",
|
|
.of_match_table = dcss_of_match,
|
|
.pm = &dcss_dev_pm,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(dcss_platform_driver);
|
|
|
|
MODULE_AUTHOR("Laurentiu Palcu <laurentiu.palcu@nxp.com>");
|
|
MODULE_DESCRIPTION("DCSS driver for i.MX8MQ");
|
|
MODULE_LICENSE("GPL v2");
|