diff options
Diffstat (limited to 'drivers/gpu/drm/imx/dcss/dcss-drv.c')
| -rw-r--r-- | drivers/gpu/drm/imx/dcss/dcss-drv.c | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/drivers/gpu/drm/imx/dcss/dcss-drv.c b/drivers/gpu/drm/imx/dcss/dcss-drv.c new file mode 100644 index 000000000000..5f58bd147d4d --- /dev/null +++ b/drivers/gpu/drm/imx/dcss/dcss-drv.c @@ -0,0 +1,186 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright 2019 NXP. + */ + +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/platform_device.h> +#include <linux/component.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; + + bool is_componentized; +}; + +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_init(struct device *dev, bool componentized) +{ + struct dcss_drv *mdrv; + int err = 0; + + mdrv = devm_kzalloc(dev, sizeof(*mdrv), GFP_KERNEL); + if (!mdrv) + return -ENOMEM; + + mdrv->is_componentized = componentized; + + mdrv->dcss = dcss_dev_create(dev, componentized); + if (IS_ERR(mdrv->dcss)) { + err = PTR_ERR(mdrv->dcss); + goto err; + } + + dev_set_drvdata(dev, mdrv); + + mdrv->kms = dcss_kms_attach(mdrv->dcss, componentized); + 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: + devm_kfree(dev, mdrv); + return err; +} + +static void dcss_drv_deinit(struct device *dev, bool componentized) +{ + struct dcss_drv *mdrv = dev_get_drvdata(dev); + + if (!mdrv) + return; + + dcss_kms_detach(mdrv->kms, componentized); + dcss_dev_destroy(mdrv->dcss); + + dev_set_drvdata(dev, NULL); +} + +static int dcss_drv_bind(struct device *dev) +{ + return dcss_drv_init(dev, true); +} + +static void dcss_drv_unbind(struct device *dev) +{ + return dcss_drv_deinit(dev, true); +} + +static const struct component_master_ops dcss_master_ops = { + .bind = dcss_drv_bind, + .unbind = dcss_drv_unbind, +}; + +static int compare_of(struct device *dev, void *data) +{ + return dev->of_node == data; +} + +static int dcss_drv_platform_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct component_match *match = NULL; + struct device_node *remote; + + if (!dev->of_node) + return -ENODEV; + + remote = of_graph_get_remote_node(dev->of_node, 0, 0); + if (!remote) + return -ENODEV; + + if (of_device_is_compatible(remote, "fsl,imx8mq-nwl-dsi")) { + of_node_put(remote); + return dcss_drv_init(dev, false); + } + + drm_of_component_match_add(dev, &match, compare_of, remote); + of_node_put(remote); + + return component_master_add_with_match(dev, &dcss_master_ops, match); +} + +static int dcss_drv_platform_remove(struct platform_device *pdev) +{ + struct dcss_drv *mdrv = dev_get_drvdata(&pdev->dev); + + if (mdrv->is_componentized) + component_master_del(&pdev->dev, &dcss_master_ops); + else + dcss_drv_deinit(&pdev->dev, false); + + return 0; +} + +static struct dcss_type_data dcss_types[] = { + [DCSS_IMX8MQ] = { + .name = "DCSS_IMX8MQ", + .blkctl_ofs = 0x2F000, + .ctxld_ofs = 0x23000, + .dtg_ofs = 0x20000, + .rdsrc_ofs = 0x22000, + .wrscl_ofs = 0x21000, + .scaler_ofs = 0x1C000, + .ss_ofs = 0x1B000, + .dpr_ofs = 0x18000, + .dec400d_ofs = 0x15000, + .hdr10_ofs = 0x00000, + .dtrc_ofs = 0x16000, + }, +}; + +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"); |