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Rev | Author | Line No. | Line |
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4560 | Serge | 1 | /* |
2 | * Copyright © 2007 David Airlie |
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3 | * |
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4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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5 | * copy of this software and associated documentation files (the "Software"), |
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6 | * to deal in the Software without restriction, including without limitation |
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7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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8 | * and/or sell copies of the Software, and to permit persons to whom the |
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9 | * Software is furnished to do so, subject to the following conditions: |
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10 | * |
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11 | * The above copyright notice and this permission notice (including the next |
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12 | * paragraph) shall be included in all copies or substantial portions of the |
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13 | * Software. |
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14 | * |
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15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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21 | * DEALINGS IN THE SOFTWARE. |
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22 | * |
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23 | * Authors: |
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24 | * David Airlie |
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25 | */ |
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26 | |||
5354 | serge | 27 | #include |
4560 | Serge | 28 | #include |
29 | #include |
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30 | #include |
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31 | #include |
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6084 | serge | 32 | #include |
4560 | Serge | 33 | //#include |
34 | #include |
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5354 | serge | 35 | #include |
4560 | Serge | 36 | #include |
6088 | serge | 37 | #include |
4560 | Serge | 38 | //#include |
39 | |||
40 | #include |
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41 | #include |
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42 | #include |
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43 | #include "intel_drv.h" |
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44 | #include |
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45 | #include "i915_drv.h" |
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46 | |||
5354 | serge | 47 | static int intel_fbdev_set_par(struct fb_info *info) |
48 | { |
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49 | struct drm_fb_helper *fb_helper = info->par; |
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50 | struct intel_fbdev *ifbdev = |
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51 | container_of(fb_helper, struct intel_fbdev, helper); |
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52 | int ret; |
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4560 | Serge | 53 | |
5354 | serge | 54 | ret = drm_fb_helper_set_par(info); |
55 | |||
56 | if (ret == 0) { |
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57 | mutex_lock(&fb_helper->dev->struct_mutex); |
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6084 | serge | 58 | intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
5354 | serge | 59 | mutex_unlock(&fb_helper->dev->struct_mutex); |
60 | } |
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61 | |||
62 | return ret; |
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63 | } |
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64 | |||
6084 | serge | 65 | static int intel_fbdev_blank(int blank, struct fb_info *info) |
66 | { |
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67 | struct drm_fb_helper *fb_helper = info->par; |
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68 | struct intel_fbdev *ifbdev = |
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69 | container_of(fb_helper, struct intel_fbdev, helper); |
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70 | int ret; |
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71 | |||
72 | ret = drm_fb_helper_blank(blank, info); |
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73 | |||
74 | if (ret == 0) { |
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75 | mutex_lock(&fb_helper->dev->struct_mutex); |
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76 | intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
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77 | mutex_unlock(&fb_helper->dev->struct_mutex); |
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78 | } |
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79 | |||
80 | return ret; |
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81 | } |
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82 | |||
83 | static int intel_fbdev_pan_display(struct fb_var_screeninfo *var, |
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84 | struct fb_info *info) |
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85 | { |
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86 | struct drm_fb_helper *fb_helper = info->par; |
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87 | struct intel_fbdev *ifbdev = |
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88 | container_of(fb_helper, struct intel_fbdev, helper); |
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89 | |||
90 | int ret; |
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91 | ret = drm_fb_helper_pan_display(var, info); |
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92 | |||
93 | if (ret == 0) { |
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94 | mutex_lock(&fb_helper->dev->struct_mutex); |
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95 | intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
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96 | mutex_unlock(&fb_helper->dev->struct_mutex); |
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97 | } |
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98 | |||
99 | return ret; |
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100 | } |
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101 | |||
4560 | Serge | 102 | static struct fb_ops intelfb_ops = { |
103 | .owner = THIS_MODULE, |
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104 | .fb_check_var = drm_fb_helper_check_var, |
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5354 | serge | 105 | .fb_set_par = intel_fbdev_set_par, |
4560 | Serge | 106 | // .fb_fillrect = cfb_fillrect, |
107 | // .fb_copyarea = cfb_copyarea, |
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108 | // .fb_imageblit = cfb_imageblit, |
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6084 | serge | 109 | .fb_pan_display = intel_fbdev_pan_display, |
110 | .fb_blank = intel_fbdev_blank, |
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4560 | Serge | 111 | // .fb_setcmap = drm_fb_helper_setcmap, |
112 | // .fb_debug_enter = drm_fb_helper_debug_enter, |
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113 | // .fb_debug_leave = drm_fb_helper_debug_leave, |
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114 | }; |
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115 | |||
116 | static int intelfb_alloc(struct drm_fb_helper *helper, |
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6084 | serge | 117 | struct drm_fb_helper_surface_size *sizes) |
4560 | Serge | 118 | { |
119 | struct intel_fbdev *ifbdev = |
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120 | container_of(helper, struct intel_fbdev, helper); |
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5060 | serge | 121 | struct drm_framebuffer *fb; |
4560 | Serge | 122 | struct drm_device *dev = helper->dev; |
6084 | serge | 123 | struct drm_i915_private *dev_priv = to_i915(dev); |
4560 | Serge | 124 | struct drm_mode_fb_cmd2 mode_cmd = {}; |
6084 | serge | 125 | struct drm_i915_gem_object *obj = NULL; |
4560 | Serge | 126 | int size, ret; |
127 | |||
128 | /* we don't do packed 24bpp */ |
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129 | if (sizes->surface_bpp == 24) |
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130 | sizes->surface_bpp = 32; |
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131 | |||
132 | mode_cmd.width = sizes->surface_width; |
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133 | mode_cmd.height = sizes->surface_height; |
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134 | |||
5354 | serge | 135 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * |
136 | DIV_ROUND_UP(sizes->surface_bpp, 8), 64); |
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4560 | Serge | 137 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, |
138 | sizes->surface_depth); |
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139 | |||
140 | size = mode_cmd.pitches[0] * mode_cmd.height; |
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6084 | serge | 141 | size = PAGE_ALIGN(size); |
6283 | serge | 142 | |
143 | /* If the FB is too big, just don't use it since fbdev is not very |
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144 | * important and we should probably use that space with FBC or other |
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145 | * features. */ |
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146 | if (size * 2 < dev_priv->gtt.stolen_usable_size) |
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147 | obj = i915_gem_object_create_stolen(dev, size); |
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148 | if (obj == NULL) |
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149 | obj = i915_gem_alloc_object(dev, size); |
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4560 | Serge | 150 | if (!obj) { |
151 | DRM_ERROR("failed to allocate framebuffer\n"); |
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152 | ret = -ENOMEM; |
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153 | goto out; |
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154 | } |
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155 | |||
5354 | serge | 156 | fb = __intel_framebuffer_create(dev, &mode_cmd, obj); |
157 | if (IS_ERR(fb)) { |
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158 | ret = PTR_ERR(fb); |
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159 | goto out_unref; |
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160 | } |
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161 | |||
4560 | Serge | 162 | /* Flush everything out, we'll be doing GTT only from now on */ |
6084 | serge | 163 | ret = intel_pin_and_fence_fb_obj(NULL, fb, NULL, NULL, NULL); |
4560 | Serge | 164 | if (ret) { |
5060 | serge | 165 | DRM_ERROR("failed to pin obj: %d\n", ret); |
5354 | serge | 166 | goto out_fb; |
4560 | Serge | 167 | } |
168 | |||
5060 | serge | 169 | ifbdev->fb = to_intel_framebuffer(fb); |
170 | |||
4560 | Serge | 171 | return 0; |
172 | |||
5354 | serge | 173 | out_fb: |
174 | drm_framebuffer_remove(fb); |
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4560 | Serge | 175 | out_unref: |
176 | drm_gem_object_unreference(&obj->base); |
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177 | out: |
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178 | return ret; |
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179 | } |
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180 | |||
181 | static int intelfb_create(struct drm_fb_helper *helper, |
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182 | struct drm_fb_helper_surface_size *sizes) |
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183 | { |
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184 | struct intel_fbdev *ifbdev = |
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185 | container_of(helper, struct intel_fbdev, helper); |
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5060 | serge | 186 | struct intel_framebuffer *intel_fb = ifbdev->fb; |
4560 | Serge | 187 | struct drm_device *dev = helper->dev; |
188 | struct drm_i915_private *dev_priv = dev->dev_private; |
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189 | struct fb_info *info; |
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190 | struct drm_framebuffer *fb; |
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191 | struct drm_i915_gem_object *obj; |
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192 | int size, ret; |
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5060 | serge | 193 | bool prealloc = false; |
4560 | Serge | 194 | |
195 | mutex_lock(&dev->struct_mutex); |
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196 | |||
5060 | serge | 197 | if (intel_fb && |
198 | (sizes->fb_width > intel_fb->base.width || |
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199 | sizes->fb_height > intel_fb->base.height)) { |
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200 | DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d)," |
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201 | " releasing it\n", |
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202 | intel_fb->base.width, intel_fb->base.height, |
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203 | sizes->fb_width, sizes->fb_height); |
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204 | drm_framebuffer_unreference(&intel_fb->base); |
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205 | intel_fb = ifbdev->fb = NULL; |
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206 | } |
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207 | if (!intel_fb || WARN_ON(!intel_fb->obj)) { |
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4560 | Serge | 208 | DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n"); |
209 | ret = intelfb_alloc(helper, sizes); |
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210 | if (ret) |
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211 | goto out_unlock; |
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5060 | serge | 212 | intel_fb = ifbdev->fb; |
4560 | Serge | 213 | } else { |
214 | DRM_DEBUG_KMS("re-using BIOS fb\n"); |
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5060 | serge | 215 | prealloc = true; |
4560 | Serge | 216 | sizes->fb_width = intel_fb->base.width; |
217 | sizes->fb_height = intel_fb->base.height; |
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218 | } |
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219 | |||
220 | obj = intel_fb->obj; |
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221 | size = obj->base.size; |
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222 | |||
6084 | serge | 223 | info = drm_fb_helper_alloc_fbi(helper); |
224 | if (IS_ERR(info)) { |
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225 | ret = PTR_ERR(info); |
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4560 | Serge | 226 | goto out_unpin; |
227 | } |
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228 | |||
229 | info->par = helper; |
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230 | |||
5060 | serge | 231 | fb = &ifbdev->fb->base; |
4560 | Serge | 232 | |
233 | ifbdev->helper.fb = fb; |
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234 | |||
6084 | serge | 235 | strcpy(info->fix.id, "inteldrmfb"); |
4560 | Serge | 236 | |
6084 | serge | 237 | info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; |
238 | info->fbops = &intelfb_ops; |
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4560 | Serge | 239 | |
6084 | serge | 240 | /* setup aperture base/size for vesafb takeover */ |
4560 | Serge | 241 | info->apertures->ranges[0].base = dev->mode_config.fb_base; |
242 | info->apertures->ranges[0].size = dev_priv->gtt.mappable_end; |
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243 | |||
6296 | serge | 244 | info->fix.smem_start = dev->mode_config.fb_base + i915_gem_obj_ggtt_offset(obj); |
245 | info->fix.smem_len = size; |
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4560 | Serge | 246 | |
247 | info->screen_base = (void*) 0xFE000000; |
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248 | info->screen_size = size; |
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249 | |||
250 | /* This driver doesn't need a VT switch to restore the mode on resume */ |
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251 | info->skip_vt_switch = true; |
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252 | |||
253 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
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254 | drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); |
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255 | |||
256 | /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ |
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257 | |||
6084 | serge | 258 | DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08llx, bo %p\n", |
4560 | Serge | 259 | fb->width, fb->height, |
260 | i915_gem_obj_ggtt_offset(obj), obj); |
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261 | |||
262 | mutex_unlock(&dev->struct_mutex); |
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263 | return 0; |
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264 | |||
6084 | serge | 265 | out_destroy_fbi: |
266 | drm_fb_helper_release_fbi(helper); |
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4560 | Serge | 267 | out_unpin: |
5060 | serge | 268 | i915_gem_object_ggtt_unpin(obj); |
4560 | Serge | 269 | drm_gem_object_unreference(&obj->base); |
270 | out_unlock: |
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271 | mutex_unlock(&dev->struct_mutex); |
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272 | return ret; |
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273 | } |
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274 | |||
275 | /** Sets the color ramps on behalf of RandR */ |
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276 | static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, |
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277 | u16 blue, int regno) |
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278 | { |
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279 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
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280 | |||
281 | intel_crtc->lut_r[regno] = red >> 8; |
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282 | intel_crtc->lut_g[regno] = green >> 8; |
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283 | intel_crtc->lut_b[regno] = blue >> 8; |
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284 | } |
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285 | |||
286 | static void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, |
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287 | u16 *blue, int regno) |
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288 | { |
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289 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
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290 | |||
291 | *red = intel_crtc->lut_r[regno] << 8; |
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292 | *green = intel_crtc->lut_g[regno] << 8; |
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293 | *blue = intel_crtc->lut_b[regno] << 8; |
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294 | } |
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295 | |||
5060 | serge | 296 | static struct drm_fb_helper_crtc * |
297 | intel_fb_helper_crtc(struct drm_fb_helper *fb_helper, struct drm_crtc *crtc) |
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298 | { |
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299 | int i; |
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300 | |||
301 | for (i = 0; i < fb_helper->crtc_count; i++) |
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302 | if (fb_helper->crtc_info[i].mode_set.crtc == crtc) |
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303 | return &fb_helper->crtc_info[i]; |
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304 | |||
305 | return NULL; |
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306 | } |
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307 | |||
308 | /* |
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309 | * Try to read the BIOS display configuration and use it for the initial |
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310 | * fb configuration. |
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311 | * |
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312 | * The BIOS or boot loader will generally create an initial display |
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313 | * configuration for us that includes some set of active pipes and displays. |
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314 | * This routine tries to figure out which pipes and connectors are active |
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315 | * and stuffs them into the crtcs and modes array given to us by the |
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316 | * drm_fb_helper code. |
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317 | * |
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318 | * The overall sequence is: |
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319 | * intel_fbdev_init - from driver load |
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320 | * intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data |
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321 | * drm_fb_helper_init - build fb helper structs |
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322 | * drm_fb_helper_single_add_all_connectors - more fb helper structs |
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323 | * intel_fbdev_initial_config - apply the config |
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324 | * drm_fb_helper_initial_config - call ->probe then register_framebuffer() |
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325 | * drm_setup_crtcs - build crtc config for fbdev |
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326 | * intel_fb_initial_config - find active connectors etc |
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327 | * drm_fb_helper_single_fb_probe - set up fbdev |
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328 | * intelfb_create - re-use or alloc fb, build out fbdev structs |
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329 | * |
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330 | * Note that we don't make special consideration whether we could actually |
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331 | * switch to the selected modes without a full modeset. E.g. when the display |
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332 | * is in VGA mode we need to recalculate watermarks and set a new high-res |
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333 | * framebuffer anyway. |
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334 | */ |
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335 | static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper, |
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336 | struct drm_fb_helper_crtc **crtcs, |
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337 | struct drm_display_mode **modes, |
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5354 | serge | 338 | struct drm_fb_offset *offsets, |
5060 | serge | 339 | bool *enabled, int width, int height) |
340 | { |
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341 | struct drm_device *dev = fb_helper->dev; |
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342 | int i, j; |
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343 | bool *save_enabled; |
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344 | bool fallback = true; |
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345 | int num_connectors_enabled = 0; |
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346 | int num_connectors_detected = 0; |
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5354 | serge | 347 | uint64_t conn_configured = 0, mask; |
348 | int pass = 0; |
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5060 | serge | 349 | |
350 | save_enabled = kcalloc(dev->mode_config.num_connector, sizeof(bool), |
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351 | GFP_KERNEL); |
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352 | if (!save_enabled) |
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353 | return false; |
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354 | |||
355 | memcpy(save_enabled, enabled, dev->mode_config.num_connector); |
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5354 | serge | 356 | mask = (1 << fb_helper->connector_count) - 1; |
357 | retry: |
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5060 | serge | 358 | for (i = 0; i < fb_helper->connector_count; i++) { |
359 | struct drm_fb_helper_connector *fb_conn; |
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360 | struct drm_connector *connector; |
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361 | struct drm_encoder *encoder; |
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362 | struct drm_fb_helper_crtc *new_crtc; |
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363 | |||
364 | fb_conn = fb_helper->connector_info[i]; |
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365 | connector = fb_conn->connector; |
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366 | |||
5354 | serge | 367 | if (conn_configured & (1 << i)) |
368 | continue; |
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369 | |||
370 | if (pass == 0 && !connector->has_tile) |
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371 | continue; |
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372 | |||
5060 | serge | 373 | if (connector->status == connector_status_connected) |
374 | num_connectors_detected++; |
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375 | |||
376 | if (!enabled[i]) { |
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377 | DRM_DEBUG_KMS("connector %s not enabled, skipping\n", |
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378 | connector->name); |
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5354 | serge | 379 | conn_configured |= (1 << i); |
5060 | serge | 380 | continue; |
381 | } |
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382 | |||
5354 | serge | 383 | if (connector->force == DRM_FORCE_OFF) { |
384 | DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n", |
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385 | connector->name); |
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386 | enabled[i] = false; |
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387 | continue; |
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388 | } |
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389 | |||
5060 | serge | 390 | encoder = connector->encoder; |
391 | if (!encoder || WARN_ON(!encoder->crtc)) { |
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5354 | serge | 392 | if (connector->force > DRM_FORCE_OFF) |
393 | goto bail; |
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394 | |||
5060 | serge | 395 | DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n", |
396 | connector->name); |
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397 | enabled[i] = false; |
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5354 | serge | 398 | conn_configured |= (1 << i); |
5060 | serge | 399 | continue; |
400 | } |
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401 | |||
402 | num_connectors_enabled++; |
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403 | |||
404 | new_crtc = intel_fb_helper_crtc(fb_helper, encoder->crtc); |
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405 | |||
406 | /* |
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407 | * Make sure we're not trying to drive multiple connectors |
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408 | * with a single CRTC, since our cloning support may not |
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409 | * match the BIOS. |
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410 | */ |
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411 | for (j = 0; j < fb_helper->connector_count; j++) { |
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412 | if (crtcs[j] == new_crtc) { |
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413 | DRM_DEBUG_KMS("fallback: cloned configuration\n"); |
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5354 | serge | 414 | goto bail; |
5060 | serge | 415 | } |
416 | } |
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417 | |||
418 | DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n", |
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419 | connector->name); |
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420 | |||
421 | /* go for command line mode first */ |
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422 | modes[i] = drm_pick_cmdline_mode(fb_conn, width, height); |
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423 | |||
424 | /* try for preferred next */ |
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425 | if (!modes[i]) { |
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5354 | serge | 426 | DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n", |
427 | connector->name, connector->has_tile); |
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5060 | serge | 428 | modes[i] = drm_has_preferred_mode(fb_conn, width, |
429 | height); |
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430 | } |
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431 | |||
432 | /* No preferred mode marked by the EDID? Are there any modes? */ |
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433 | if (!modes[i] && !list_empty(&connector->modes)) { |
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434 | DRM_DEBUG_KMS("using first mode listed on connector %s\n", |
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435 | connector->name); |
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436 | modes[i] = list_first_entry(&connector->modes, |
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437 | struct drm_display_mode, |
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438 | head); |
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439 | } |
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440 | |||
441 | /* last resort: use current mode */ |
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442 | if (!modes[i]) { |
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443 | /* |
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444 | * IMPORTANT: We want to use the adjusted mode (i.e. |
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445 | * after the panel fitter upscaling) as the initial |
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446 | * config, not the input mode, which is what crtc->mode |
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6084 | serge | 447 | * usually contains. But since our current |
5060 | serge | 448 | * code puts a mode derived from the post-pfit timings |
6084 | serge | 449 | * into crtc->mode this works out correctly. |
5060 | serge | 450 | */ |
451 | DRM_DEBUG_KMS("looking for current mode on connector %s\n", |
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452 | connector->name); |
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6084 | serge | 453 | modes[i] = &encoder->crtc->mode; |
5060 | serge | 454 | } |
455 | crtcs[i] = new_crtc; |
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456 | |||
457 | DRM_DEBUG_KMS("connector %s on pipe %c [CRTC:%d]: %dx%d%s\n", |
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458 | connector->name, |
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459 | pipe_name(to_intel_crtc(encoder->crtc)->pipe), |
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460 | encoder->crtc->base.id, |
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461 | modes[i]->hdisplay, modes[i]->vdisplay, |
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462 | modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :""); |
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463 | |||
464 | fallback = false; |
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5354 | serge | 465 | conn_configured |= (1 << i); |
5060 | serge | 466 | } |
467 | |||
5354 | serge | 468 | if ((conn_configured & mask) != mask) { |
469 | pass++; |
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470 | goto retry; |
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471 | } |
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472 | |||
5060 | serge | 473 | /* |
474 | * If the BIOS didn't enable everything it could, fall back to have the |
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475 | * same user experiencing of lighting up as much as possible like the |
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476 | * fbdev helper library. |
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477 | */ |
||
478 | if (num_connectors_enabled != num_connectors_detected && |
||
479 | num_connectors_enabled < INTEL_INFO(dev)->num_pipes) { |
||
480 | DRM_DEBUG_KMS("fallback: Not all outputs enabled\n"); |
||
481 | DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled, |
||
482 | num_connectors_detected); |
||
483 | fallback = true; |
||
484 | } |
||
485 | |||
486 | if (fallback) { |
||
5354 | serge | 487 | bail: |
5060 | serge | 488 | DRM_DEBUG_KMS("Not using firmware configuration\n"); |
489 | memcpy(enabled, save_enabled, dev->mode_config.num_connector); |
||
490 | kfree(save_enabled); |
||
491 | return false; |
||
492 | } |
||
493 | |||
494 | kfree(save_enabled); |
||
495 | return true; |
||
496 | } |
||
497 | |||
498 | static const struct drm_fb_helper_funcs intel_fb_helper_funcs = { |
||
499 | .initial_config = intel_fb_initial_config, |
||
4560 | Serge | 500 | .gamma_set = intel_crtc_fb_gamma_set, |
501 | .gamma_get = intel_crtc_fb_gamma_get, |
||
502 | .fb_probe = intelfb_create, |
||
503 | }; |
||
504 | |||
6296 | serge | 505 | static void intel_fbdev_destroy(struct drm_device *dev, |
506 | struct intel_fbdev *ifbdev) |
||
507 | { |
||
508 | |||
509 | drm_fb_helper_unregister_fbi(&ifbdev->helper); |
||
510 | drm_fb_helper_release_fbi(&ifbdev->helper); |
||
511 | |||
512 | drm_fb_helper_fini(&ifbdev->helper); |
||
513 | |||
514 | drm_framebuffer_unregister_private(&ifbdev->fb->base); |
||
515 | drm_framebuffer_remove(&ifbdev->fb->base); |
||
516 | } |
||
517 | |||
5060 | serge | 518 | /* |
519 | * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible. |
||
520 | * The core display code will have read out the current plane configuration, |
||
521 | * so we use that to figure out if there's an object for us to use as the |
||
522 | * fb, and if so, we re-use it for the fbdev configuration. |
||
523 | * |
||
524 | * Note we only support a single fb shared across pipes for boot (mostly for |
||
525 | * fbcon), so we just find the biggest and use that. |
||
526 | */ |
||
527 | static bool intel_fbdev_init_bios(struct drm_device *dev, |
||
528 | struct intel_fbdev *ifbdev) |
||
529 | { |
||
530 | struct intel_framebuffer *fb = NULL; |
||
531 | struct drm_crtc *crtc; |
||
532 | struct intel_crtc *intel_crtc; |
||
533 | unsigned int max_size = 0; |
||
4560 | Serge | 534 | |
5060 | serge | 535 | /* Find the largest fb */ |
536 | for_each_crtc(dev, crtc) { |
||
6084 | serge | 537 | struct drm_i915_gem_object *obj = |
538 | intel_fb_obj(crtc->primary->state->fb); |
||
5060 | serge | 539 | intel_crtc = to_intel_crtc(crtc); |
540 | |||
6084 | serge | 541 | if (!crtc->state->active || !obj) { |
5060 | serge | 542 | DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n", |
543 | pipe_name(intel_crtc->pipe)); |
||
544 | continue; |
||
545 | } |
||
546 | |||
6084 | serge | 547 | if (obj->base.size > max_size) { |
5060 | serge | 548 | DRM_DEBUG_KMS("found possible fb from plane %c\n", |
549 | pipe_name(intel_crtc->pipe)); |
||
6084 | serge | 550 | fb = to_intel_framebuffer(crtc->primary->state->fb); |
551 | max_size = obj->base.size; |
||
5060 | serge | 552 | } |
553 | } |
||
554 | |||
555 | if (!fb) { |
||
556 | DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n"); |
||
557 | goto out; |
||
558 | } |
||
559 | |||
560 | /* Now make sure all the pipes will fit into it */ |
||
561 | for_each_crtc(dev, crtc) { |
||
562 | unsigned int cur_size; |
||
563 | |||
564 | intel_crtc = to_intel_crtc(crtc); |
||
565 | |||
6084 | serge | 566 | if (!crtc->state->active) { |
5060 | serge | 567 | DRM_DEBUG_KMS("pipe %c not active, skipping\n", |
568 | pipe_name(intel_crtc->pipe)); |
||
569 | continue; |
||
570 | } |
||
571 | |||
572 | DRM_DEBUG_KMS("checking plane %c for BIOS fb\n", |
||
573 | pipe_name(intel_crtc->pipe)); |
||
574 | |||
575 | /* |
||
576 | * See if the plane fb we found above will fit on this |
||
577 | * pipe. Note we need to use the selected fb's pitch and bpp |
||
578 | * rather than the current pipe's, since they differ. |
||
579 | */ |
||
6084 | serge | 580 | cur_size = intel_crtc->config->base.adjusted_mode.crtc_hdisplay; |
5060 | serge | 581 | cur_size = cur_size * fb->base.bits_per_pixel / 8; |
582 | if (fb->base.pitches[0] < cur_size) { |
||
583 | DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n", |
||
584 | pipe_name(intel_crtc->pipe), |
||
585 | cur_size, fb->base.pitches[0]); |
||
586 | fb = NULL; |
||
587 | break; |
||
588 | } |
||
589 | |||
6084 | serge | 590 | cur_size = intel_crtc->config->base.adjusted_mode.crtc_vdisplay; |
591 | cur_size = intel_fb_align_height(dev, cur_size, |
||
592 | fb->base.pixel_format, |
||
593 | fb->base.modifier[0]); |
||
5060 | serge | 594 | cur_size *= fb->base.pitches[0]; |
595 | DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n", |
||
596 | pipe_name(intel_crtc->pipe), |
||
6084 | serge | 597 | intel_crtc->config->base.adjusted_mode.crtc_hdisplay, |
598 | intel_crtc->config->base.adjusted_mode.crtc_vdisplay, |
||
5060 | serge | 599 | fb->base.bits_per_pixel, |
600 | cur_size); |
||
601 | |||
602 | if (cur_size > max_size) { |
||
603 | DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n", |
||
604 | pipe_name(intel_crtc->pipe), |
||
605 | cur_size, max_size); |
||
606 | fb = NULL; |
||
607 | break; |
||
608 | } |
||
609 | |||
610 | DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n", |
||
611 | pipe_name(intel_crtc->pipe), |
||
612 | max_size, cur_size); |
||
613 | } |
||
614 | |||
615 | if (!fb) { |
||
616 | DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n"); |
||
617 | goto out; |
||
618 | } |
||
619 | |||
620 | ifbdev->preferred_bpp = fb->base.bits_per_pixel; |
||
621 | ifbdev->fb = fb; |
||
622 | |||
623 | drm_framebuffer_reference(&ifbdev->fb->base); |
||
624 | |||
625 | /* Final pass to check if any active pipes don't have fbs */ |
||
626 | for_each_crtc(dev, crtc) { |
||
627 | intel_crtc = to_intel_crtc(crtc); |
||
628 | |||
6084 | serge | 629 | if (!crtc->state->active) |
5060 | serge | 630 | continue; |
631 | |||
632 | WARN(!crtc->primary->fb, |
||
633 | "re-used BIOS config but lost an fb on crtc %d\n", |
||
634 | crtc->base.id); |
||
635 | } |
||
636 | |||
637 | |||
638 | DRM_DEBUG_KMS("using BIOS fb for initial console\n"); |
||
639 | return true; |
||
640 | |||
641 | out: |
||
642 | |||
643 | return false; |
||
644 | } |
||
645 | |||
4560 | Serge | 646 | int intel_fbdev_init(struct drm_device *dev) |
647 | { |
||
648 | struct intel_fbdev *ifbdev; |
||
649 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
650 | int ret; |
||
651 | |||
5060 | serge | 652 | if (WARN_ON(INTEL_INFO(dev)->num_pipes == 0)) |
653 | return -ENODEV; |
||
654 | |||
655 | ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); |
||
656 | if (ifbdev == NULL) |
||
4560 | Serge | 657 | return -ENOMEM; |
658 | |||
5060 | serge | 659 | drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs); |
4560 | Serge | 660 | |
5060 | serge | 661 | if (!intel_fbdev_init_bios(dev, ifbdev)) |
662 | ifbdev->preferred_bpp = 32; |
||
663 | |||
4560 | Serge | 664 | ret = drm_fb_helper_init(dev, &ifbdev->helper, |
5060 | serge | 665 | INTEL_INFO(dev)->num_pipes, 4); |
4560 | Serge | 666 | if (ret) { |
667 | kfree(ifbdev); |
||
668 | return ret; |
||
669 | } |
||
670 | |||
6084 | serge | 671 | ifbdev->helper.atomic = true; |
672 | |||
5060 | serge | 673 | dev_priv->fbdev = ifbdev; |
4560 | Serge | 674 | drm_fb_helper_single_add_all_connectors(&ifbdev->helper); |
675 | |||
6084 | serge | 676 | return 0; |
4560 | Serge | 677 | } |
678 | |||
5354 | serge | 679 | void intel_fbdev_initial_config(void *data, async_cookie_t cookie) |
4560 | Serge | 680 | { |
5354 | serge | 681 | struct drm_i915_private *dev_priv = data; |
5060 | serge | 682 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
4560 | Serge | 683 | |
684 | /* Due to peculiar init order wrt to hpd handling this is separate. */ |
||
5060 | serge | 685 | drm_fb_helper_initial_config(&ifbdev->helper, ifbdev->preferred_bpp); |
4560 | Serge | 686 | } |
687 | |||
688 | |||
689 | void intel_fbdev_output_poll_changed(struct drm_device *dev) |
||
690 | { |
||
691 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
5060 | serge | 692 | if (dev_priv->fbdev) |
693 | drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper); |
||
4560 | Serge | 694 | }>>><>>><>><>><>>><>>><>><>><>> |