// SPDX-License-Identifier: GPL-2.0-only/* * Copyright (C) 2012 Russell King *  Written from the i915 driver. */ #include <linux/errno.h>#include <linux/fb.h>#include <linux/kernel.h>#include <linux/module.h> #include <drm/drm_crtc_helper.h>#include <drm/drm_drv.h>#include <drm/drm_fb_helper.h>#include <drm/drm_fourcc.h>#include <drm/drm_print.h> #include "armada_crtc.h"#include "armada_drm.h"#include "armada_fb.h"#include "armada_gem.h" static void armada_fbdev_fb_destroy(struct fb_info *info){	struct drm_fb_helper *fbh = info->par; 	drm_fb_helper_fini(fbh); 	fbh->fb->funcs->destroy(fbh->fb); 	drm_client_release(&fbh->client);} static const struct fb_ops armada_fb_ops = {	.owner		= THIS_MODULE,	FB_DEFAULT_IOMEM_OPS,	DRM_FB_HELPER_DEFAULT_OPS,	.fb_destroy	= armada_fbdev_fb_destroy,}; static const struct drm_fb_helper_funcs armada_fbdev_helper_funcs; int armada_fbdev_driver_fbdev_probe(struct drm_fb_helper *fbh,				    struct drm_fb_helper_surface_size *sizes){	struct drm_device *dev = fbh->dev;	struct fb_info *info = fbh->info;	struct drm_mode_fb_cmd2 mode;	struct armada_framebuffer *dfb;	struct armada_gem_object *obj;	int size, ret;	void *ptr; 	memset(&mode, 0, sizeof(mode));	mode.width = sizes->surface_width;	mode.height = sizes->surface_height;	mode.pitches[0] = armada_pitch(mode.width, sizes->surface_bpp);	mode.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,					sizes->surface_depth); 	size = mode.pitches[0] * mode.height;	obj = armada_gem_alloc_private_object(dev, size);	if (!obj) {		DRM_ERROR("failed to allocate fb memory\n");		return -ENOMEM;	} 	ret = armada_gem_linear_back(dev, obj);	if (ret) {		drm_gem_object_put(&obj->obj);		return ret;	} 	ptr = armada_gem_map_object(dev, obj);	if (!ptr) {		drm_gem_object_put(&obj->obj);		return -ENOMEM;	} 	dfb = armada_framebuffer_create(dev,					drm_get_format_info(dev, mode.pixel_format,							    mode.modifier[0]),					&mode, obj); 	/*	 * A reference is now held by the framebuffer object if	 * successful, otherwise this drops the ref for the error path.	 */	drm_gem_object_put(&obj->obj); 	if (IS_ERR(dfb))		return PTR_ERR(dfb); 	info->fbops = &armada_fb_ops;	info->fix.smem_start = obj->phys_addr;	info->fix.smem_len = obj->obj.size;	info->screen_size = obj->obj.size;	info->screen_base = ptr;	fbh->funcs = &armada_fbdev_helper_funcs;	fbh->fb = &dfb->fb; 	drm_fb_helper_fill_info(info, fbh, sizes); 	DRM_DEBUG_KMS("allocated %dx%d %dbpp fb: 0x%08llx\n",		dfb->fb.width, dfb->fb.height, dfb->fb.format->cpp[0] * 8,		(unsigned long long)obj->phys_addr); 	return 0;}