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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 | |||
47 | struct fb_info *framebuffer_alloc(size_t size, struct device *dev) |
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48 | { |
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49 | #define BYTES_PER_LONG (BITS_PER_LONG/8) |
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50 | #define PADDING (BYTES_PER_LONG - (sizeof(struct fb_info) % BYTES_PER_LONG)) |
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51 | int fb_info_size = sizeof(struct fb_info); |
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52 | struct fb_info *info; |
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53 | char *p; |
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54 | |||
55 | if (size) |
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56 | fb_info_size += PADDING; |
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57 | |||
58 | p = kzalloc(fb_info_size + size, GFP_KERNEL); |
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59 | |||
60 | if (!p) |
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61 | return NULL; |
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62 | |||
63 | info = (struct fb_info *) p; |
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64 | |||
65 | if (size) |
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66 | info->par = p + fb_info_size; |
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67 | |||
68 | return info; |
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69 | #undef PADDING |
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70 | #undef BYTES_PER_LONG |
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71 | } |
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72 | |||
5354 | serge | 73 | static int intel_fbdev_set_par(struct fb_info *info) |
74 | { |
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75 | struct drm_fb_helper *fb_helper = info->par; |
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76 | struct intel_fbdev *ifbdev = |
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77 | container_of(fb_helper, struct intel_fbdev, helper); |
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78 | int ret; |
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4560 | Serge | 79 | |
5354 | serge | 80 | ret = drm_fb_helper_set_par(info); |
81 | |||
82 | if (ret == 0) { |
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83 | mutex_lock(&fb_helper->dev->struct_mutex); |
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6084 | serge | 84 | intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
5354 | serge | 85 | mutex_unlock(&fb_helper->dev->struct_mutex); |
86 | } |
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87 | |||
88 | return ret; |
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89 | } |
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90 | |||
6084 | serge | 91 | static int intel_fbdev_blank(int blank, struct fb_info *info) |
92 | { |
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93 | struct drm_fb_helper *fb_helper = info->par; |
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94 | struct intel_fbdev *ifbdev = |
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95 | container_of(fb_helper, struct intel_fbdev, helper); |
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96 | int ret; |
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97 | |||
98 | ret = drm_fb_helper_blank(blank, info); |
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99 | |||
100 | if (ret == 0) { |
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101 | mutex_lock(&fb_helper->dev->struct_mutex); |
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102 | intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
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103 | mutex_unlock(&fb_helper->dev->struct_mutex); |
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104 | } |
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105 | |||
106 | return ret; |
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107 | } |
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108 | |||
109 | static int intel_fbdev_pan_display(struct fb_var_screeninfo *var, |
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110 | struct fb_info *info) |
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111 | { |
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112 | struct drm_fb_helper *fb_helper = info->par; |
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113 | struct intel_fbdev *ifbdev = |
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114 | container_of(fb_helper, struct intel_fbdev, helper); |
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115 | |||
116 | int ret; |
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117 | ret = drm_fb_helper_pan_display(var, info); |
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118 | |||
119 | if (ret == 0) { |
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120 | mutex_lock(&fb_helper->dev->struct_mutex); |
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121 | intel_fb_obj_invalidate(ifbdev->fb->obj, ORIGIN_GTT); |
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122 | mutex_unlock(&fb_helper->dev->struct_mutex); |
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123 | } |
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124 | |||
125 | return ret; |
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126 | } |
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127 | |||
4560 | Serge | 128 | static struct fb_ops intelfb_ops = { |
129 | .owner = THIS_MODULE, |
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130 | .fb_check_var = drm_fb_helper_check_var, |
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5354 | serge | 131 | .fb_set_par = intel_fbdev_set_par, |
4560 | Serge | 132 | // .fb_fillrect = cfb_fillrect, |
133 | // .fb_copyarea = cfb_copyarea, |
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134 | // .fb_imageblit = cfb_imageblit, |
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6084 | serge | 135 | .fb_pan_display = intel_fbdev_pan_display, |
136 | .fb_blank = intel_fbdev_blank, |
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4560 | Serge | 137 | // .fb_setcmap = drm_fb_helper_setcmap, |
138 | // .fb_debug_enter = drm_fb_helper_debug_enter, |
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139 | // .fb_debug_leave = drm_fb_helper_debug_leave, |
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140 | }; |
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141 | |||
142 | static int intelfb_alloc(struct drm_fb_helper *helper, |
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6084 | serge | 143 | struct drm_fb_helper_surface_size *sizes) |
4560 | Serge | 144 | { |
145 | struct intel_fbdev *ifbdev = |
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146 | container_of(helper, struct intel_fbdev, helper); |
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5060 | serge | 147 | struct drm_framebuffer *fb; |
4560 | Serge | 148 | struct drm_device *dev = helper->dev; |
6084 | serge | 149 | struct drm_i915_private *dev_priv = to_i915(dev); |
4560 | Serge | 150 | struct drm_mode_fb_cmd2 mode_cmd = {}; |
6084 | serge | 151 | struct drm_i915_gem_object *obj = NULL; |
4560 | Serge | 152 | int size, ret; |
153 | |||
154 | /* we don't do packed 24bpp */ |
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155 | if (sizes->surface_bpp == 24) |
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156 | sizes->surface_bpp = 32; |
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157 | |||
158 | mode_cmd.width = sizes->surface_width; |
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159 | mode_cmd.height = sizes->surface_height; |
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160 | |||
5354 | serge | 161 | mode_cmd.pitches[0] = ALIGN(mode_cmd.width * |
162 | DIV_ROUND_UP(sizes->surface_bpp, 8), 64); |
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4560 | Serge | 163 | mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, |
164 | sizes->surface_depth); |
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165 | |||
166 | size = mode_cmd.pitches[0] * mode_cmd.height; |
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6084 | serge | 167 | size = PAGE_ALIGN(size); |
4560 | Serge | 168 | obj = main_fb_obj; |
6084 | serge | 169 | obj->map_and_fenceable=true; |
4560 | Serge | 170 | if (!obj) { |
171 | DRM_ERROR("failed to allocate framebuffer\n"); |
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172 | ret = -ENOMEM; |
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173 | goto out; |
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174 | } |
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175 | |||
5354 | serge | 176 | fb = __intel_framebuffer_create(dev, &mode_cmd, obj); |
177 | if (IS_ERR(fb)) { |
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178 | ret = PTR_ERR(fb); |
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179 | goto out_unref; |
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180 | } |
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181 | |||
4560 | Serge | 182 | /* Flush everything out, we'll be doing GTT only from now on */ |
6084 | serge | 183 | ret = intel_pin_and_fence_fb_obj(NULL, fb, NULL, NULL, NULL); |
4560 | Serge | 184 | if (ret) { |
5060 | serge | 185 | DRM_ERROR("failed to pin obj: %d\n", ret); |
5354 | serge | 186 | goto out_fb; |
4560 | Serge | 187 | } |
188 | |||
5060 | serge | 189 | ifbdev->fb = to_intel_framebuffer(fb); |
190 | |||
4560 | Serge | 191 | return 0; |
192 | |||
5354 | serge | 193 | out_fb: |
194 | drm_framebuffer_remove(fb); |
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4560 | Serge | 195 | out_unref: |
196 | drm_gem_object_unreference(&obj->base); |
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197 | out: |
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198 | return ret; |
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199 | } |
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200 | |||
201 | static int intelfb_create(struct drm_fb_helper *helper, |
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202 | struct drm_fb_helper_surface_size *sizes) |
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203 | { |
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204 | struct intel_fbdev *ifbdev = |
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205 | container_of(helper, struct intel_fbdev, helper); |
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5060 | serge | 206 | struct intel_framebuffer *intel_fb = ifbdev->fb; |
4560 | Serge | 207 | struct drm_device *dev = helper->dev; |
208 | struct drm_i915_private *dev_priv = dev->dev_private; |
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209 | struct fb_info *info; |
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210 | struct drm_framebuffer *fb; |
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211 | struct drm_i915_gem_object *obj; |
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212 | int size, ret; |
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5060 | serge | 213 | bool prealloc = false; |
4560 | Serge | 214 | |
215 | mutex_lock(&dev->struct_mutex); |
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216 | |||
5367 | serge | 217 | #if 0 |
5060 | serge | 218 | if (intel_fb && |
219 | (sizes->fb_width > intel_fb->base.width || |
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220 | sizes->fb_height > intel_fb->base.height)) { |
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221 | DRM_DEBUG_KMS("BIOS fb too small (%dx%d), we require (%dx%d)," |
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222 | " releasing it\n", |
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223 | intel_fb->base.width, intel_fb->base.height, |
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224 | sizes->fb_width, sizes->fb_height); |
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225 | drm_framebuffer_unreference(&intel_fb->base); |
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226 | intel_fb = ifbdev->fb = NULL; |
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227 | } |
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5367 | serge | 228 | #endif |
229 | |||
5060 | serge | 230 | if (!intel_fb || WARN_ON(!intel_fb->obj)) { |
4560 | Serge | 231 | DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n"); |
232 | ret = intelfb_alloc(helper, sizes); |
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233 | if (ret) |
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234 | goto out_unlock; |
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5060 | serge | 235 | intel_fb = ifbdev->fb; |
4560 | Serge | 236 | } else { |
237 | DRM_DEBUG_KMS("re-using BIOS fb\n"); |
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5060 | serge | 238 | prealloc = true; |
4560 | Serge | 239 | sizes->fb_width = intel_fb->base.width; |
240 | sizes->fb_height = intel_fb->base.height; |
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241 | } |
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242 | |||
243 | obj = intel_fb->obj; |
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244 | size = obj->base.size; |
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245 | |||
6084 | serge | 246 | info = drm_fb_helper_alloc_fbi(helper); |
247 | if (IS_ERR(info)) { |
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248 | ret = PTR_ERR(info); |
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4560 | Serge | 249 | goto out_unpin; |
250 | } |
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251 | |||
252 | info->par = helper; |
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253 | |||
5060 | serge | 254 | fb = &ifbdev->fb->base; |
4560 | Serge | 255 | |
6084 | serge | 256 | if(main_framebuffer == NULL) |
257 | main_framebuffer = fb; |
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258 | |||
4560 | Serge | 259 | ifbdev->helper.fb = fb; |
260 | |||
6084 | serge | 261 | strcpy(info->fix.id, "inteldrmfb"); |
4560 | Serge | 262 | |
6084 | serge | 263 | info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; |
264 | info->fbops = &intelfb_ops; |
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4560 | Serge | 265 | |
6084 | serge | 266 | /* setup aperture base/size for vesafb takeover */ |
4560 | Serge | 267 | info->apertures->ranges[0].base = dev->mode_config.fb_base; |
268 | info->apertures->ranges[0].size = dev_priv->gtt.mappable_end; |
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269 | |||
270 | |||
271 | info->screen_base = (void*) 0xFE000000; |
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272 | info->screen_size = size; |
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273 | |||
274 | /* This driver doesn't need a VT switch to restore the mode on resume */ |
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275 | info->skip_vt_switch = true; |
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276 | |||
277 | drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
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278 | drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); |
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279 | |||
280 | /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ |
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281 | |||
6084 | serge | 282 | DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08llx, bo %p\n", |
4560 | Serge | 283 | fb->width, fb->height, |
284 | i915_gem_obj_ggtt_offset(obj), obj); |
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285 | |||
286 | mutex_unlock(&dev->struct_mutex); |
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287 | return 0; |
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288 | |||
6084 | serge | 289 | out_destroy_fbi: |
290 | drm_fb_helper_release_fbi(helper); |
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4560 | Serge | 291 | out_unpin: |
5060 | serge | 292 | i915_gem_object_ggtt_unpin(obj); |
4560 | Serge | 293 | drm_gem_object_unreference(&obj->base); |
294 | out_unlock: |
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295 | mutex_unlock(&dev->struct_mutex); |
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296 | return ret; |
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297 | } |
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298 | |||
299 | /** Sets the color ramps on behalf of RandR */ |
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300 | static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, |
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301 | u16 blue, int regno) |
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302 | { |
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303 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
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304 | |||
305 | intel_crtc->lut_r[regno] = red >> 8; |
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306 | intel_crtc->lut_g[regno] = green >> 8; |
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307 | intel_crtc->lut_b[regno] = blue >> 8; |
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308 | } |
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309 | |||
310 | static void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, |
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311 | u16 *blue, int regno) |
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312 | { |
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313 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
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314 | |||
315 | *red = intel_crtc->lut_r[regno] << 8; |
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316 | *green = intel_crtc->lut_g[regno] << 8; |
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317 | *blue = intel_crtc->lut_b[regno] << 8; |
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318 | } |
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319 | |||
5060 | serge | 320 | static struct drm_fb_helper_crtc * |
321 | intel_fb_helper_crtc(struct drm_fb_helper *fb_helper, struct drm_crtc *crtc) |
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322 | { |
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323 | int i; |
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324 | |||
325 | for (i = 0; i < fb_helper->crtc_count; i++) |
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326 | if (fb_helper->crtc_info[i].mode_set.crtc == crtc) |
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327 | return &fb_helper->crtc_info[i]; |
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328 | |||
329 | return NULL; |
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330 | } |
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331 | |||
332 | /* |
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333 | * Try to read the BIOS display configuration and use it for the initial |
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334 | * fb configuration. |
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335 | * |
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336 | * The BIOS or boot loader will generally create an initial display |
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337 | * configuration for us that includes some set of active pipes and displays. |
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338 | * This routine tries to figure out which pipes and connectors are active |
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339 | * and stuffs them into the crtcs and modes array given to us by the |
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340 | * drm_fb_helper code. |
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341 | * |
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342 | * The overall sequence is: |
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343 | * intel_fbdev_init - from driver load |
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344 | * intel_fbdev_init_bios - initialize the intel_fbdev using BIOS data |
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345 | * drm_fb_helper_init - build fb helper structs |
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346 | * drm_fb_helper_single_add_all_connectors - more fb helper structs |
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347 | * intel_fbdev_initial_config - apply the config |
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348 | * drm_fb_helper_initial_config - call ->probe then register_framebuffer() |
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349 | * drm_setup_crtcs - build crtc config for fbdev |
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350 | * intel_fb_initial_config - find active connectors etc |
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351 | * drm_fb_helper_single_fb_probe - set up fbdev |
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352 | * intelfb_create - re-use or alloc fb, build out fbdev structs |
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353 | * |
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354 | * Note that we don't make special consideration whether we could actually |
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355 | * switch to the selected modes without a full modeset. E.g. when the display |
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356 | * is in VGA mode we need to recalculate watermarks and set a new high-res |
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357 | * framebuffer anyway. |
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358 | */ |
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359 | static bool intel_fb_initial_config(struct drm_fb_helper *fb_helper, |
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360 | struct drm_fb_helper_crtc **crtcs, |
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361 | struct drm_display_mode **modes, |
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5354 | serge | 362 | struct drm_fb_offset *offsets, |
5060 | serge | 363 | bool *enabled, int width, int height) |
364 | { |
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365 | struct drm_device *dev = fb_helper->dev; |
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366 | int i, j; |
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367 | bool *save_enabled; |
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368 | bool fallback = true; |
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369 | int num_connectors_enabled = 0; |
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370 | int num_connectors_detected = 0; |
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5354 | serge | 371 | uint64_t conn_configured = 0, mask; |
372 | int pass = 0; |
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5060 | serge | 373 | |
374 | save_enabled = kcalloc(dev->mode_config.num_connector, sizeof(bool), |
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375 | GFP_KERNEL); |
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376 | if (!save_enabled) |
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377 | return false; |
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378 | |||
379 | memcpy(save_enabled, enabled, dev->mode_config.num_connector); |
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5354 | serge | 380 | mask = (1 << fb_helper->connector_count) - 1; |
381 | retry: |
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5060 | serge | 382 | for (i = 0; i < fb_helper->connector_count; i++) { |
383 | struct drm_fb_helper_connector *fb_conn; |
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384 | struct drm_connector *connector; |
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385 | struct drm_encoder *encoder; |
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386 | struct drm_fb_helper_crtc *new_crtc; |
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387 | |||
388 | fb_conn = fb_helper->connector_info[i]; |
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389 | connector = fb_conn->connector; |
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390 | |||
5354 | serge | 391 | if (conn_configured & (1 << i)) |
392 | continue; |
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393 | |||
394 | if (pass == 0 && !connector->has_tile) |
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395 | continue; |
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396 | |||
5060 | serge | 397 | if (connector->status == connector_status_connected) |
398 | num_connectors_detected++; |
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399 | |||
400 | if (!enabled[i]) { |
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401 | DRM_DEBUG_KMS("connector %s not enabled, skipping\n", |
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402 | connector->name); |
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5354 | serge | 403 | conn_configured |= (1 << i); |
5060 | serge | 404 | continue; |
405 | } |
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406 | |||
5354 | serge | 407 | if (connector->force == DRM_FORCE_OFF) { |
408 | DRM_DEBUG_KMS("connector %s is disabled by user, skipping\n", |
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409 | connector->name); |
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410 | enabled[i] = false; |
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411 | continue; |
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412 | } |
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413 | |||
5060 | serge | 414 | encoder = connector->encoder; |
415 | if (!encoder || WARN_ON(!encoder->crtc)) { |
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5354 | serge | 416 | if (connector->force > DRM_FORCE_OFF) |
417 | goto bail; |
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418 | |||
5060 | serge | 419 | DRM_DEBUG_KMS("connector %s has no encoder or crtc, skipping\n", |
420 | connector->name); |
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421 | enabled[i] = false; |
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5354 | serge | 422 | conn_configured |= (1 << i); |
5060 | serge | 423 | continue; |
424 | } |
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425 | |||
426 | num_connectors_enabled++; |
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427 | |||
428 | new_crtc = intel_fb_helper_crtc(fb_helper, encoder->crtc); |
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429 | |||
430 | /* |
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431 | * Make sure we're not trying to drive multiple connectors |
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432 | * with a single CRTC, since our cloning support may not |
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433 | * match the BIOS. |
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434 | */ |
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435 | for (j = 0; j < fb_helper->connector_count; j++) { |
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436 | if (crtcs[j] == new_crtc) { |
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437 | DRM_DEBUG_KMS("fallback: cloned configuration\n"); |
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5354 | serge | 438 | goto bail; |
5060 | serge | 439 | } |
440 | } |
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441 | |||
442 | DRM_DEBUG_KMS("looking for cmdline mode on connector %s\n", |
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443 | connector->name); |
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444 | |||
445 | /* go for command line mode first */ |
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446 | modes[i] = drm_pick_cmdline_mode(fb_conn, width, height); |
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447 | |||
448 | /* try for preferred next */ |
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449 | if (!modes[i]) { |
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5354 | serge | 450 | DRM_DEBUG_KMS("looking for preferred mode on connector %s %d\n", |
451 | connector->name, connector->has_tile); |
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5060 | serge | 452 | modes[i] = drm_has_preferred_mode(fb_conn, width, |
453 | height); |
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454 | } |
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455 | |||
456 | /* No preferred mode marked by the EDID? Are there any modes? */ |
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457 | if (!modes[i] && !list_empty(&connector->modes)) { |
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458 | DRM_DEBUG_KMS("using first mode listed on connector %s\n", |
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459 | connector->name); |
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460 | modes[i] = list_first_entry(&connector->modes, |
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461 | struct drm_display_mode, |
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462 | head); |
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463 | } |
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464 | |||
465 | /* last resort: use current mode */ |
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466 | if (!modes[i]) { |
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467 | /* |
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468 | * IMPORTANT: We want to use the adjusted mode (i.e. |
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469 | * after the panel fitter upscaling) as the initial |
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470 | * config, not the input mode, which is what crtc->mode |
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6084 | serge | 471 | * usually contains. But since our current |
5060 | serge | 472 | * code puts a mode derived from the post-pfit timings |
6084 | serge | 473 | * into crtc->mode this works out correctly. |
5060 | serge | 474 | */ |
475 | DRM_DEBUG_KMS("looking for current mode on connector %s\n", |
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476 | connector->name); |
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6084 | serge | 477 | modes[i] = &encoder->crtc->mode; |
5060 | serge | 478 | } |
479 | crtcs[i] = new_crtc; |
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480 | |||
481 | DRM_DEBUG_KMS("connector %s on pipe %c [CRTC:%d]: %dx%d%s\n", |
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482 | connector->name, |
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483 | pipe_name(to_intel_crtc(encoder->crtc)->pipe), |
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484 | encoder->crtc->base.id, |
||
485 | modes[i]->hdisplay, modes[i]->vdisplay, |
||
486 | modes[i]->flags & DRM_MODE_FLAG_INTERLACE ? "i" :""); |
||
487 | |||
488 | fallback = false; |
||
5354 | serge | 489 | conn_configured |= (1 << i); |
5060 | serge | 490 | } |
491 | |||
5354 | serge | 492 | if ((conn_configured & mask) != mask) { |
493 | pass++; |
||
494 | goto retry; |
||
495 | } |
||
496 | |||
5060 | serge | 497 | /* |
498 | * If the BIOS didn't enable everything it could, fall back to have the |
||
499 | * same user experiencing of lighting up as much as possible like the |
||
500 | * fbdev helper library. |
||
501 | */ |
||
502 | if (num_connectors_enabled != num_connectors_detected && |
||
503 | num_connectors_enabled < INTEL_INFO(dev)->num_pipes) { |
||
504 | DRM_DEBUG_KMS("fallback: Not all outputs enabled\n"); |
||
505 | DRM_DEBUG_KMS("Enabled: %i, detected: %i\n", num_connectors_enabled, |
||
506 | num_connectors_detected); |
||
507 | fallback = true; |
||
508 | } |
||
509 | |||
510 | if (fallback) { |
||
5354 | serge | 511 | bail: |
5060 | serge | 512 | DRM_DEBUG_KMS("Not using firmware configuration\n"); |
513 | memcpy(enabled, save_enabled, dev->mode_config.num_connector); |
||
514 | kfree(save_enabled); |
||
515 | return false; |
||
516 | } |
||
517 | |||
518 | kfree(save_enabled); |
||
519 | return true; |
||
520 | } |
||
521 | |||
522 | static const struct drm_fb_helper_funcs intel_fb_helper_funcs = { |
||
523 | .initial_config = intel_fb_initial_config, |
||
4560 | Serge | 524 | .gamma_set = intel_crtc_fb_gamma_set, |
525 | .gamma_get = intel_crtc_fb_gamma_get, |
||
526 | .fb_probe = intelfb_create, |
||
527 | }; |
||
528 | |||
5060 | serge | 529 | /* |
530 | * Build an intel_fbdev struct using a BIOS allocated framebuffer, if possible. |
||
531 | * The core display code will have read out the current plane configuration, |
||
532 | * so we use that to figure out if there's an object for us to use as the |
||
533 | * fb, and if so, we re-use it for the fbdev configuration. |
||
534 | * |
||
535 | * Note we only support a single fb shared across pipes for boot (mostly for |
||
536 | * fbcon), so we just find the biggest and use that. |
||
537 | */ |
||
538 | static bool intel_fbdev_init_bios(struct drm_device *dev, |
||
539 | struct intel_fbdev *ifbdev) |
||
540 | { |
||
541 | struct intel_framebuffer *fb = NULL; |
||
542 | struct drm_crtc *crtc; |
||
543 | struct intel_crtc *intel_crtc; |
||
544 | unsigned int max_size = 0; |
||
4560 | Serge | 545 | |
5060 | serge | 546 | /* Find the largest fb */ |
547 | for_each_crtc(dev, crtc) { |
||
6084 | serge | 548 | struct drm_i915_gem_object *obj = |
549 | intel_fb_obj(crtc->primary->state->fb); |
||
5060 | serge | 550 | intel_crtc = to_intel_crtc(crtc); |
551 | |||
6084 | serge | 552 | if (!crtc->state->active || !obj) { |
5060 | serge | 553 | DRM_DEBUG_KMS("pipe %c not active or no fb, skipping\n", |
554 | pipe_name(intel_crtc->pipe)); |
||
555 | continue; |
||
556 | } |
||
557 | |||
6084 | serge | 558 | if (obj->base.size > max_size) { |
5060 | serge | 559 | DRM_DEBUG_KMS("found possible fb from plane %c\n", |
560 | pipe_name(intel_crtc->pipe)); |
||
6084 | serge | 561 | fb = to_intel_framebuffer(crtc->primary->state->fb); |
562 | max_size = obj->base.size; |
||
5060 | serge | 563 | } |
564 | } |
||
565 | |||
566 | if (!fb) { |
||
567 | DRM_DEBUG_KMS("no active fbs found, not using BIOS config\n"); |
||
568 | goto out; |
||
569 | } |
||
570 | |||
571 | /* Now make sure all the pipes will fit into it */ |
||
572 | for_each_crtc(dev, crtc) { |
||
573 | unsigned int cur_size; |
||
574 | |||
575 | intel_crtc = to_intel_crtc(crtc); |
||
576 | |||
6084 | serge | 577 | if (!crtc->state->active) { |
5060 | serge | 578 | DRM_DEBUG_KMS("pipe %c not active, skipping\n", |
579 | pipe_name(intel_crtc->pipe)); |
||
580 | continue; |
||
581 | } |
||
582 | |||
583 | DRM_DEBUG_KMS("checking plane %c for BIOS fb\n", |
||
584 | pipe_name(intel_crtc->pipe)); |
||
585 | |||
586 | /* |
||
587 | * See if the plane fb we found above will fit on this |
||
588 | * pipe. Note we need to use the selected fb's pitch and bpp |
||
589 | * rather than the current pipe's, since they differ. |
||
590 | */ |
||
6084 | serge | 591 | cur_size = intel_crtc->config->base.adjusted_mode.crtc_hdisplay; |
5060 | serge | 592 | cur_size = cur_size * fb->base.bits_per_pixel / 8; |
593 | if (fb->base.pitches[0] < cur_size) { |
||
594 | DRM_DEBUG_KMS("fb not wide enough for plane %c (%d vs %d)\n", |
||
595 | pipe_name(intel_crtc->pipe), |
||
596 | cur_size, fb->base.pitches[0]); |
||
597 | fb = NULL; |
||
598 | break; |
||
599 | } |
||
600 | |||
6084 | serge | 601 | cur_size = intel_crtc->config->base.adjusted_mode.crtc_vdisplay; |
602 | cur_size = intel_fb_align_height(dev, cur_size, |
||
603 | fb->base.pixel_format, |
||
604 | fb->base.modifier[0]); |
||
5060 | serge | 605 | cur_size *= fb->base.pitches[0]; |
606 | DRM_DEBUG_KMS("pipe %c area: %dx%d, bpp: %d, size: %d\n", |
||
607 | pipe_name(intel_crtc->pipe), |
||
6084 | serge | 608 | intel_crtc->config->base.adjusted_mode.crtc_hdisplay, |
609 | intel_crtc->config->base.adjusted_mode.crtc_vdisplay, |
||
5060 | serge | 610 | fb->base.bits_per_pixel, |
611 | cur_size); |
||
612 | |||
613 | if (cur_size > max_size) { |
||
614 | DRM_DEBUG_KMS("fb not big enough for plane %c (%d vs %d)\n", |
||
615 | pipe_name(intel_crtc->pipe), |
||
616 | cur_size, max_size); |
||
617 | fb = NULL; |
||
618 | break; |
||
619 | } |
||
620 | |||
621 | DRM_DEBUG_KMS("fb big enough for plane %c (%d >= %d)\n", |
||
622 | pipe_name(intel_crtc->pipe), |
||
623 | max_size, cur_size); |
||
624 | } |
||
625 | |||
626 | if (!fb) { |
||
627 | DRM_DEBUG_KMS("BIOS fb not suitable for all pipes, not using\n"); |
||
628 | goto out; |
||
629 | } |
||
630 | |||
631 | ifbdev->preferred_bpp = fb->base.bits_per_pixel; |
||
632 | ifbdev->fb = fb; |
||
633 | |||
634 | drm_framebuffer_reference(&ifbdev->fb->base); |
||
635 | |||
636 | /* Final pass to check if any active pipes don't have fbs */ |
||
637 | for_each_crtc(dev, crtc) { |
||
638 | intel_crtc = to_intel_crtc(crtc); |
||
639 | |||
6084 | serge | 640 | if (!crtc->state->active) |
5060 | serge | 641 | continue; |
642 | |||
643 | WARN(!crtc->primary->fb, |
||
644 | "re-used BIOS config but lost an fb on crtc %d\n", |
||
645 | crtc->base.id); |
||
646 | } |
||
647 | |||
648 | |||
649 | DRM_DEBUG_KMS("using BIOS fb for initial console\n"); |
||
650 | return true; |
||
651 | |||
652 | out: |
||
653 | |||
654 | return false; |
||
655 | } |
||
656 | |||
4560 | Serge | 657 | int intel_fbdev_init(struct drm_device *dev) |
658 | { |
||
659 | struct intel_fbdev *ifbdev; |
||
660 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
661 | int ret; |
||
662 | |||
5060 | serge | 663 | if (WARN_ON(INTEL_INFO(dev)->num_pipes == 0)) |
664 | return -ENODEV; |
||
665 | |||
666 | ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL); |
||
667 | if (ifbdev == NULL) |
||
4560 | Serge | 668 | return -ENOMEM; |
669 | |||
5060 | serge | 670 | drm_fb_helper_prepare(dev, &ifbdev->helper, &intel_fb_helper_funcs); |
4560 | Serge | 671 | |
5060 | serge | 672 | if (!intel_fbdev_init_bios(dev, ifbdev)) |
673 | ifbdev->preferred_bpp = 32; |
||
674 | |||
4560 | Serge | 675 | ret = drm_fb_helper_init(dev, &ifbdev->helper, |
5060 | serge | 676 | INTEL_INFO(dev)->num_pipes, 4); |
4560 | Serge | 677 | if (ret) { |
678 | kfree(ifbdev); |
||
679 | return ret; |
||
680 | } |
||
681 | |||
6084 | serge | 682 | ifbdev->helper.atomic = true; |
683 | |||
5060 | serge | 684 | dev_priv->fbdev = ifbdev; |
4560 | Serge | 685 | drm_fb_helper_single_add_all_connectors(&ifbdev->helper); |
686 | |||
6084 | serge | 687 | return 0; |
4560 | Serge | 688 | } |
689 | |||
5354 | serge | 690 | void intel_fbdev_initial_config(void *data, async_cookie_t cookie) |
4560 | Serge | 691 | { |
5354 | serge | 692 | struct drm_i915_private *dev_priv = data; |
5060 | serge | 693 | struct intel_fbdev *ifbdev = dev_priv->fbdev; |
4560 | Serge | 694 | |
695 | /* Due to peculiar init order wrt to hpd handling this is separate. */ |
||
5060 | serge | 696 | drm_fb_helper_initial_config(&ifbdev->helper, ifbdev->preferred_bpp); |
4560 | Serge | 697 | } |
698 | |||
699 | |||
700 | void intel_fbdev_output_poll_changed(struct drm_device *dev) |
||
701 | { |
||
702 | struct drm_i915_private *dev_priv = dev->dev_private; |
||
5060 | serge | 703 | if (dev_priv->fbdev) |
704 | drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper); |
||
4560 | Serge | 705 | }>>><>>><>><>><>>><>>><>><>><> |