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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061// SPDX-License-Identifier: GPL-2.0-only/* Copyright 2024-2025 Tomeu Vizoso <tomeu@tomeuvizoso.net> */
#include <drm/drm_drv.h>#include <linux/array_size.h>#include <linux/clk.h>#include <linux/dma-mapping.h>#include <linux/platform_device.h>#include <linux/of.h>
#include "rocket_device.h"
struct rocket_device *rocket_device_init(struct platform_device *pdev, const struct drm_driver *rocket_drm_driver){ struct device *dev = &pdev->dev; struct device_node *core_node; struct rocket_device *rdev; struct drm_device *ddev; unsigned int num_cores = 0; int err;
rdev = devm_drm_dev_alloc(dev, rocket_drm_driver, struct rocket_device, ddev); if (IS_ERR(rdev)) return rdev;
ddev = &rdev->ddev; dev_set_drvdata(dev, rdev);
for_each_compatible_node(core_node, NULL, "rockchip,rk3588-rknn-core") if (of_device_is_available(core_node)) num_cores++;
rdev->cores = devm_kcalloc(dev, num_cores, sizeof(*rdev->cores), GFP_KERNEL); if (!rdev->cores) return ERR_PTR(-ENOMEM);
dma_set_max_seg_size(dev, UINT_MAX);
err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(40)); if (err) return ERR_PTR(err);
err = devm_mutex_init(dev, &rdev->sched_lock); if (err) return ERR_PTR(-ENOMEM);
err = drm_dev_register(ddev, 0); if (err) return ERR_PTR(err);
return rdev;}
void rocket_device_fini(struct rocket_device *rdev){ WARN_ON(rdev->num_cores > 0);
drm_dev_unregister(&rdev->ddev);}