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1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright 2019 NXP.4 */5 6#include <linux/module.h>7#include <linux/kernel.h>8#include <linux/of.h>9#include <linux/platform_device.h>10#include <drm/drm_module.h>11#include <drm/drm_of.h>12 13#include "dcss-dev.h"14#include "dcss-kms.h"15 16struct dcss_drv {17 struct dcss_dev *dcss;18 struct dcss_kms_dev *kms;19};20 21struct dcss_dev *dcss_drv_dev_to_dcss(struct device *dev)22{23 struct dcss_drv *mdrv = dev_get_drvdata(dev);24 25 return mdrv ? mdrv->dcss : NULL;26}27 28struct drm_device *dcss_drv_dev_to_drm(struct device *dev)29{30 struct dcss_drv *mdrv = dev_get_drvdata(dev);31 32 return mdrv ? &mdrv->kms->base : NULL;33}34 35static int dcss_drv_platform_probe(struct platform_device *pdev)36{37 struct device *dev = &pdev->dev;38 struct device_node *remote;39 struct dcss_drv *mdrv;40 int err = 0;41 bool hdmi_output = true;42 43 if (!dev->of_node)44 return -ENODEV;45 46 remote = of_graph_get_remote_node(dev->of_node, 0, 0);47 if (!remote)48 return -ENODEV;49 50 hdmi_output = !of_device_is_compatible(remote, "fsl,imx8mq-nwl-dsi");51 52 of_node_put(remote);53 54 mdrv = devm_kzalloc(dev, sizeof(*mdrv), GFP_KERNEL);55 if (!mdrv)56 return -ENOMEM;57 58 mdrv->dcss = dcss_dev_create(dev, hdmi_output);59 if (IS_ERR(mdrv->dcss))60 return PTR_ERR(mdrv->dcss);61 62 dev_set_drvdata(dev, mdrv);63 64 mdrv->kms = dcss_kms_attach(mdrv->dcss);65 if (IS_ERR(mdrv->kms)) {66 err = PTR_ERR(mdrv->kms);67 dev_err_probe(dev, err, "Failed to initialize KMS\n");68 goto dcss_shutoff;69 }70 71 return 0;72 73dcss_shutoff:74 dcss_dev_destroy(mdrv->dcss);75 76 return err;77}78 79static void dcss_drv_platform_remove(struct platform_device *pdev)80{81 struct dcss_drv *mdrv = dev_get_drvdata(&pdev->dev);82 83 dcss_kms_detach(mdrv->kms);84 dcss_dev_destroy(mdrv->dcss);85}86 87static void dcss_drv_platform_shutdown(struct platform_device *pdev)88{89 struct dcss_drv *mdrv = dev_get_drvdata(&pdev->dev);90 91 dcss_kms_shutdown(mdrv->kms);92}93 94static struct dcss_type_data dcss_types[] = {95 [DCSS_IMX8MQ] = {96 .name = "DCSS_IMX8MQ",97 .blkctl_ofs = 0x2F000,98 .ctxld_ofs = 0x23000,99 .dtg_ofs = 0x20000,100 .scaler_ofs = 0x1C000,101 .ss_ofs = 0x1B000,102 .dpr_ofs = 0x18000,103 },104};105 106static const struct of_device_id dcss_of_match[] = {107 { .compatible = "nxp,imx8mq-dcss", .data = &dcss_types[DCSS_IMX8MQ], },108 {},109};110 111MODULE_DEVICE_TABLE(of, dcss_of_match);112 113static struct platform_driver dcss_platform_driver = {114 .probe = dcss_drv_platform_probe,115 .remove_new = dcss_drv_platform_remove,116 .shutdown = dcss_drv_platform_shutdown,117 .driver = {118 .name = "imx-dcss",119 .of_match_table = dcss_of_match,120 .pm = pm_ptr(&dcss_dev_pm_ops),121 },122};123 124drm_module_platform_driver(dcss_platform_driver);125 126MODULE_AUTHOR("Laurentiu Palcu <laurentiu.palcu@nxp.com>");127MODULE_DESCRIPTION("DCSS driver for i.MX8MQ");128MODULE_LICENSE("GPL v2");129