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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 | // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2012 Russell King */ #include <drm/drm_modeset_helper.h> #include <drm/drm_fourcc.h> #include <drm/drm_gem_framebuffer_helper.h> #include "armada_drm.h" #include "armada_fb.h" #include "armada_gem.h" #include "armada_hw.h" static const struct drm_framebuffer_funcs armada_fb_funcs = { .destroy = drm_gem_fb_destroy, .create_handle = drm_gem_fb_create_handle, }; struct armada_framebuffer *armada_framebuffer_create(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode, struct armada_gem_object *obj) { struct armada_framebuffer *dfb; uint8_t format, config; int ret; switch (mode->pixel_format) { #define FMT(drm, fmt, mod) \ case DRM_FORMAT_##drm: \ format = CFG_##fmt; \ config = mod; \ break FMT(RGB565, 565, CFG_SWAPRB); FMT(BGR565, 565, 0); FMT(ARGB1555, 1555, CFG_SWAPRB); FMT(ABGR1555, 1555, 0); FMT(RGB888, 888PACK, CFG_SWAPRB); FMT(BGR888, 888PACK, 0); FMT(XRGB8888, X888, CFG_SWAPRB); FMT(XBGR8888, X888, 0); FMT(ARGB8888, 8888, CFG_SWAPRB); FMT(ABGR8888, 8888, 0); FMT(YUYV, 422PACK, CFG_YUV2RGB | CFG_SWAPYU | CFG_SWAPUV); FMT(UYVY, 422PACK, CFG_YUV2RGB); FMT(VYUY, 422PACK, CFG_YUV2RGB | CFG_SWAPUV); FMT(YVYU, 422PACK, CFG_YUV2RGB | CFG_SWAPYU); FMT(YUV422, 422, CFG_YUV2RGB); FMT(YVU422, 422, CFG_YUV2RGB | CFG_SWAPUV); FMT(YUV420, 420, CFG_YUV2RGB); FMT(YVU420, 420, CFG_YUV2RGB | CFG_SWAPUV); FMT(C8, PSEUDO8, 0); #undef FMT default: return ERR_PTR(-EINVAL); } dfb = kzalloc(sizeof(*dfb), GFP_KERNEL); if (!dfb) { DRM_ERROR("failed to allocate Armada fb object\n"); return ERR_PTR(-ENOMEM); } dfb->fmt = format; dfb->mod = config; dfb->fb.obj[0] = &obj->obj; drm_helper_mode_fill_fb_struct(dev, &dfb->fb, mode); ret = drm_framebuffer_init(dev, &dfb->fb, &armada_fb_funcs); if (ret) { kfree(dfb); return ERR_PTR(ret); } /* * Take a reference on our object as we're successful - the * caller already holds a reference, which keeps us safe for * the above call, but the caller will drop their reference * to it. Hence we need to take our own reference. */ drm_gem_object_get(&obj->obj); return dfb; } struct drm_framebuffer *armada_fb_create(struct drm_device *dev, struct drm_file *dfile, const struct drm_mode_fb_cmd2 *mode) { const struct drm_format_info *info = drm_get_format_info(dev, mode); struct armada_gem_object *obj; struct armada_framebuffer *dfb; int ret; DRM_DEBUG_DRIVER("w%u h%u pf%08x f%u p%u,%u,%u\n", mode->width, mode->height, mode->pixel_format, mode->flags, mode->pitches[0], mode->pitches[1], mode->pitches[2]); /* We can only handle a single plane at the moment */ if (info->num_planes > 1 && (mode->handles[0] != mode->handles[1] || mode->handles[0] != mode->handles[2])) { ret = -EINVAL; goto err; } obj = armada_gem_object_lookup(dfile, mode->handles[0]); if (!obj) { ret = -ENOENT; goto err; } if (obj->obj.import_attach && !obj->sgt) { ret = armada_gem_map_import(obj); if (ret) goto err_unref; } /* Framebuffer objects must have a valid device address for scanout */ if (!obj->mapped) { ret = -EINVAL; goto err_unref; } dfb = armada_framebuffer_create(dev, mode, obj); if (IS_ERR(dfb)) { ret = PTR_ERR(dfb); goto err; } drm_gem_object_put(&obj->obj); return &dfb->fb; err_unref: drm_gem_object_put(&obj->obj); err: DRM_ERROR("failed to initialize framebuffer: %d\n", ret); return ERR_PTR(ret); } |