diff options
Diffstat (limited to 'drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c')
-rw-r--r-- | drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c | 333 |
1 files changed, 333 insertions, 0 deletions
diff --git a/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c new file mode 100644 index 0000000000..cc44be10fd --- /dev/null +++ b/drivers/media/platform/mediatek/mdp3/mtk-mdp3-core.c @@ -0,0 +1,333 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022 MediaTek Inc. + * Author: Ping-Hsun Wu <ping-hsun.wu@mediatek.com> + */ + +#include <linux/clk.h> +#include <linux/module.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/remoteproc.h> +#include <linux/remoteproc/mtk_scp.h> +#include <media/videobuf2-dma-contig.h> + +#include "mtk-mdp3-core.h" +#include "mtk-mdp3-cfg.h" +#include "mtk-mdp3-m2m.h" + +static const struct of_device_id mdp_of_ids[] = { + { .compatible = "mediatek,mt8183-mdp3-rdma", + .data = &mt8183_mdp_driver_data, + }, + {}, +}; +MODULE_DEVICE_TABLE(of, mdp_of_ids); + +static struct platform_device *__get_pdev_by_id(struct platform_device *pdev, + enum mdp_infra_id id) +{ + struct device_node *node; + struct platform_device *mdp_pdev = NULL; + const struct mtk_mdp_driver_data *mdp_data; + const char *compat; + + if (!pdev) + return NULL; + + if (id < MDP_INFRA_MMSYS || id >= MDP_INFRA_MAX) { + dev_err(&pdev->dev, "Illegal infra id %d\n", id); + return NULL; + } + + mdp_data = of_device_get_match_data(&pdev->dev); + if (!mdp_data) { + dev_err(&pdev->dev, "have no driver data to find node\n"); + return NULL; + } + compat = mdp_data->mdp_probe_infra[id].compatible; + + node = of_find_compatible_node(NULL, NULL, compat); + if (WARN_ON(!node)) { + dev_err(&pdev->dev, "find node from id %d failed\n", id); + return NULL; + } + + mdp_pdev = of_find_device_by_node(node); + of_node_put(node); + if (WARN_ON(!mdp_pdev)) { + dev_err(&pdev->dev, "find pdev from id %d failed\n", id); + return NULL; + } + + return mdp_pdev; +} + +struct platform_device *mdp_get_plat_device(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *mdp_node; + struct platform_device *mdp_pdev; + + mdp_node = of_parse_phandle(dev->of_node, MDP_PHANDLE_NAME, 0); + if (!mdp_node) { + dev_err(dev, "can't get node %s\n", MDP_PHANDLE_NAME); + return NULL; + } + + mdp_pdev = of_find_device_by_node(mdp_node); + of_node_put(mdp_node); + + return mdp_pdev; +} +EXPORT_SYMBOL_GPL(mdp_get_plat_device); + +int mdp_vpu_get_locked(struct mdp_dev *mdp) +{ + int ret = 0; + + if (mdp->vpu_count++ == 0) { + ret = rproc_boot(mdp->rproc_handle); + if (ret) { + dev_err(&mdp->pdev->dev, + "vpu_load_firmware failed %d\n", ret); + goto err_load_vpu; + } + ret = mdp_vpu_register(mdp); + if (ret) { + dev_err(&mdp->pdev->dev, + "mdp_vpu register failed %d\n", ret); + goto err_reg_vpu; + } + ret = mdp_vpu_dev_init(&mdp->vpu, mdp->scp, &mdp->vpu_lock); + if (ret) { + dev_err(&mdp->pdev->dev, + "mdp_vpu device init failed %d\n", ret); + goto err_init_vpu; + } + } + return 0; + +err_init_vpu: + mdp_vpu_unregister(mdp); +err_reg_vpu: +err_load_vpu: + mdp->vpu_count--; + return ret; +} + +void mdp_vpu_put_locked(struct mdp_dev *mdp) +{ + if (--mdp->vpu_count == 0) { + mdp_vpu_dev_deinit(&mdp->vpu); + mdp_vpu_unregister(mdp); + } +} + +void mdp_video_device_release(struct video_device *vdev) +{ + struct mdp_dev *mdp = (struct mdp_dev *)video_get_drvdata(vdev); + int i; + + scp_put(mdp->scp); + + destroy_workqueue(mdp->job_wq); + destroy_workqueue(mdp->clock_wq); + + pm_runtime_disable(&mdp->pdev->dev); + + vb2_dma_contig_clear_max_seg_size(&mdp->pdev->dev); + + mdp_comp_destroy(mdp); + for (i = 0; i < MDP_PIPE_MAX; i++) + mtk_mutex_put(mdp->mdp_mutex[i]); + + mdp_vpu_shared_mem_free(&mdp->vpu); + v4l2_m2m_release(mdp->m2m_dev); + kfree(mdp); +} + +static int mdp_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct mdp_dev *mdp; + struct platform_device *mm_pdev; + int ret, i, mutex_id; + + mdp = kzalloc(sizeof(*mdp), GFP_KERNEL); + if (!mdp) { + ret = -ENOMEM; + goto err_return; + } + + mdp->pdev = pdev; + mdp->mdp_data = of_device_get_match_data(&pdev->dev); + + mm_pdev = __get_pdev_by_id(pdev, MDP_INFRA_MMSYS); + if (!mm_pdev) { + ret = -ENODEV; + goto err_destroy_device; + } + mdp->mdp_mmsys = &mm_pdev->dev; + + mm_pdev = __get_pdev_by_id(pdev, MDP_INFRA_MUTEX); + if (WARN_ON(!mm_pdev)) { + ret = -ENODEV; + goto err_destroy_device; + } + for (i = 0; i < mdp->mdp_data->pipe_info_len; i++) { + mutex_id = mdp->mdp_data->pipe_info[i].mutex_id; + if (!IS_ERR_OR_NULL(mdp->mdp_mutex[mutex_id])) + continue; + mdp->mdp_mutex[mutex_id] = mtk_mutex_get(&mm_pdev->dev); + if (IS_ERR(mdp->mdp_mutex[mutex_id])) { + ret = PTR_ERR(mdp->mdp_mutex[mutex_id]); + goto err_free_mutex; + } + } + + ret = mdp_comp_config(mdp); + if (ret) { + dev_err(dev, "Failed to config mdp components\n"); + goto err_free_mutex; + } + + mdp->job_wq = alloc_workqueue(MDP_MODULE_NAME, WQ_FREEZABLE, 0); + if (!mdp->job_wq) { + dev_err(dev, "Unable to create job workqueue\n"); + ret = -ENOMEM; + goto err_deinit_comp; + } + + mdp->clock_wq = alloc_workqueue(MDP_MODULE_NAME "-clock", WQ_FREEZABLE, + 0); + if (!mdp->clock_wq) { + dev_err(dev, "Unable to create clock workqueue\n"); + ret = -ENOMEM; + goto err_destroy_job_wq; + } + + mm_pdev = __get_pdev_by_id(pdev, MDP_INFRA_SCP); + if (WARN_ON(!mm_pdev)) { + dev_err(&pdev->dev, "Could not get scp device\n"); + ret = -ENODEV; + goto err_destroy_clock_wq; + } + mdp->scp = platform_get_drvdata(mm_pdev); + mdp->rproc_handle = scp_get_rproc(mdp->scp); + dev_dbg(&pdev->dev, "MDP rproc_handle: %pK", mdp->rproc_handle); + + mutex_init(&mdp->vpu_lock); + mutex_init(&mdp->m2m_lock); + + mdp->cmdq_clt = cmdq_mbox_create(dev, 0); + if (IS_ERR(mdp->cmdq_clt)) { + ret = PTR_ERR(mdp->cmdq_clt); + goto err_put_scp; + } + + init_waitqueue_head(&mdp->callback_wq); + ida_init(&mdp->mdp_ida); + platform_set_drvdata(pdev, mdp); + + vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32)); + + ret = v4l2_device_register(dev, &mdp->v4l2_dev); + if (ret) { + dev_err(dev, "Failed to register v4l2 device\n"); + ret = -EINVAL; + goto err_mbox_destroy; + } + + ret = mdp_m2m_device_register(mdp); + if (ret) { + v4l2_err(&mdp->v4l2_dev, "Failed to register m2m device\n"); + goto err_unregister_device; + } + + dev_dbg(dev, "mdp-%d registered successfully\n", pdev->id); + return 0; + +err_unregister_device: + v4l2_device_unregister(&mdp->v4l2_dev); +err_mbox_destroy: + cmdq_mbox_destroy(mdp->cmdq_clt); +err_put_scp: + scp_put(mdp->scp); +err_destroy_clock_wq: + destroy_workqueue(mdp->clock_wq); +err_destroy_job_wq: + destroy_workqueue(mdp->job_wq); +err_deinit_comp: + mdp_comp_destroy(mdp); +err_free_mutex: + for (i = 0; i < mdp->mdp_data->pipe_info_len; i++) + if (!IS_ERR_OR_NULL(mdp->mdp_mutex[i])) + mtk_mutex_put(mdp->mdp_mutex[i]); +err_destroy_device: + kfree(mdp); +err_return: + dev_dbg(dev, "Errno %d\n", ret); + return ret; +} + +static void mdp_remove(struct platform_device *pdev) +{ + struct mdp_dev *mdp = platform_get_drvdata(pdev); + + v4l2_device_unregister(&mdp->v4l2_dev); + + dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name); +} + +static int __maybe_unused mdp_suspend(struct device *dev) +{ + struct mdp_dev *mdp = dev_get_drvdata(dev); + int ret; + + atomic_set(&mdp->suspended, 1); + + if (atomic_read(&mdp->job_count)) { + ret = wait_event_timeout(mdp->callback_wq, + !atomic_read(&mdp->job_count), + 2 * HZ); + if (ret == 0) { + dev_err(dev, + "%s:flushed cmdq task incomplete, count=%d\n", + __func__, atomic_read(&mdp->job_count)); + return -EBUSY; + } + } + + return 0; +} + +static int __maybe_unused mdp_resume(struct device *dev) +{ + struct mdp_dev *mdp = dev_get_drvdata(dev); + + atomic_set(&mdp->suspended, 0); + + return 0; +} + +static const struct dev_pm_ops mdp_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(mdp_suspend, mdp_resume) +}; + +static struct platform_driver mdp_driver = { + .probe = mdp_probe, + .remove_new = mdp_remove, + .driver = { + .name = MDP_MODULE_NAME, + .pm = &mdp_pm_ops, + .of_match_table = mdp_of_ids, + }, +}; + +module_platform_driver(mdp_driver); + +MODULE_AUTHOR("Ping-Hsun Wu <ping-hsun.wu@mediatek.com>"); +MODULE_DESCRIPTION("MediaTek image processor 3 driver"); +MODULE_LICENSE("GPL"); |