// SPDX-License-Identifier: GPL-2.0 /* * Copyright 2019 NXP. */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/of.h> #include <linux/platform_device.h> #include <drm/drm_module.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, }, }; drm_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");