drm/amdxcp: add platform device driver for amdxcp

obj-$(CONFIG_DRM_SCHED)	+= scheduler/

obj-$(CONFIG_DRM_RADEON)+= radeon/

obj-$(CONFIG_DRM_AMDGPU)+= amd/amdgpu/

obj-$(CONFIG_DRM_AMDGPU)+= amd/amdxcp/

obj-$(CONFIG_DRM_I915)	+= i915/

obj-$(CONFIG_DRM_KMB_DISPLAY)  += kmb/

obj-$(CONFIG_DRM_MGAG200) += mgag200/

#

# Copyright 2023 Advanced Micro Devices, Inc.

#

# Permission is hereby granted, free of charge, to any person obtaining a

# copy of this software and associated documentation files (the "Software"),

# to deal in the Software without restriction, including without limitation

# the rights to use, copy, modify, merge, publish, distribute, sublicense,

# and/or sell copies of the Software, and to permit persons to whom the

# Software is furnished to do so, subject to the following conditions:

#

# The above copyright notice and this permission notice shall be included in

# all copies or substantial portions of the Software.

#

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

# THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR

# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

# OTHER DEALINGS IN THE SOFTWARE.

#

amdgpu-y := amdgpu_xcp_drv.o

obj-$(CONFIG_DRM_AMDGPU) += amdgpu_xcp_drv.o

/*

 * Copyright 2023 Advanced Micro Devices, Inc.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR

 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

 * OTHER DEALINGS IN THE SOFTWARE.

 *

 */

#include <linux/init.h>

#include <linux/module.h>

#include <linux/platform_device.h>

#include <drm/drm_drv.h>

#include "amdgpu_xcp_drv.h"

#define MAX_XCP_PLATFORM_DEVICE 64

struct xcp_device {

	struct drm_device drm;

	struct platform_device *pdev;

};

static const struct drm_driver amdgpu_xcp_driver = {

	.driver_features = DRIVER_GEM | DRIVER_RENDER,

	.name = "amdgpu_xcp_drv",

	.major = 1,

	.minor = 0,

};

static int pdev_num;

static struct xcp_device *xcp_dev[MAX_XCP_PLATFORM_DEVICE];

int amdgpu_xcp_drm_dev_alloc(struct drm_device **ddev)

{

	struct platform_device *pdev;

	struct xcp_device *pxcp_dev;

	int ret;

	if (pdev_num >= MAX_XCP_PLATFORM_DEVICE)

		return -ENODEV;

	pdev = platform_device_register_simple("amdgpu_xcp", pdev_num, NULL, 0);

	if (IS_ERR(pdev))

		return PTR_ERR(pdev);

	if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {

		ret = -ENOMEM;

		goto out_unregister;

	}

	pxcp_dev = devm_drm_dev_alloc(&pdev->dev, &amdgpu_xcp_driver, struct xcp_device, drm);

	if (IS_ERR(pxcp_dev)) {

		ret = PTR_ERR(pxcp_dev);

		goto out_devres;

	}

	xcp_dev[pdev_num] = pxcp_dev;

	xcp_dev[pdev_num]->pdev = pdev;

	*ddev = &pxcp_dev->drm;

	pdev_num++;

	return 0;

out_devres:

	devres_release_group(&pdev->dev, NULL);

out_unregister:

	platform_device_unregister(pdev);

	return ret;

}

EXPORT_SYMBOL(amdgpu_xcp_drm_dev_alloc);

void amdgpu_xcp_drv_release(void)

{

	for (--pdev_num; pdev_num >= 0; --pdev_num) {

		devres_release_group(&xcp_dev[pdev_num]->pdev->dev, NULL);

		platform_device_unregister(xcp_dev[pdev_num]->pdev);

		xcp_dev[pdev_num]->pdev = NULL;

		xcp_dev[pdev_num] = NULL;

	}

	pdev_num = 0;

}

EXPORT_SYMBOL(amdgpu_xcp_drv_release);

static void __exit amdgpu_xcp_drv_exit(void)

{

	amdgpu_xcp_drv_release();

}

module_exit(amdgpu_xcp_drv_exit);

MODULE_AUTHOR("AMD linux driver team");

MODULE_DESCRIPTION("AMD XCP PLATFORM DEVICES");

MODULE_LICENSE("GPL and additional rights");

/*

 * Copyright 2023 Advanced Micro Devices, Inc.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR

 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,

 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

 * OTHER DEALINGS IN THE SOFTWARE.

 *

 */

#ifndef _AMDGPU_XCP_DRV_H_

#define _AMDGPU_XCP_DRV_H_

int amdgpu_xcp_drm_dev_alloc(struct drm_device **ddev);

void amdgpu_xcp_drv_release(void);

#endif /* _AMDGPU_XCP_DRV_H_ */