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// 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);
}
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