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Rev | Author | Line No. | Line |
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1179 | serge | 1 | /* |
2 | * Copyright (c) 2006-2009 Red Hat Inc. |
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3 | * Copyright (c) 2006-2008 Intel Corporation |
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4 | * Copyright (c) 2007 Dave Airlie |
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5 | * |
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6 | * DRM framebuffer helper functions |
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7 | * |
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8 | * Permission to use, copy, modify, distribute, and sell this software and its |
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9 | * documentation for any purpose is hereby granted without fee, provided that |
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10 | * the above copyright notice appear in all copies and that both that copyright |
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11 | * notice and this permission notice appear in supporting documentation, and |
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12 | * that the name of the copyright holders not be used in advertising or |
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13 | * publicity pertaining to distribution of the software without specific, |
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14 | * written prior permission. The copyright holders make no representations |
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15 | * about the suitability of this software for any purpose. It is provided "as |
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16 | * is" without express or implied warranty. |
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17 | * |
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18 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
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19 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
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20 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
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21 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
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22 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
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23 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
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24 | * OF THIS SOFTWARE. |
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25 | * |
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26 | * Authors: |
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27 | * Dave Airlie |
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28 | * Jesse Barnes |
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29 | */ |
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1430 | serge | 30 | #include |
1963 | serge | 31 | #include |
32 | #include |
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1179 | serge | 33 | #include |
3031 | serge | 34 | #include |
35 | #include |
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36 | #include |
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37 | #include |
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38 | #include |
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1179 | serge | 39 | |
1430 | serge | 40 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
41 | MODULE_DESCRIPTION("DRM KMS helper"); |
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42 | MODULE_LICENSE("GPL and additional rights"); |
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1179 | serge | 43 | |
44 | static LIST_HEAD(kernel_fb_helper_list); |
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45 | |||
1963 | serge | 46 | /* simple single crtc case helper function */ |
47 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) |
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1221 | serge | 48 | { |
1963 | serge | 49 | struct drm_device *dev = fb_helper->dev; |
50 | struct drm_connector *connector; |
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51 | int i; |
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1221 | serge | 52 | |
1963 | serge | 53 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
54 | struct drm_fb_helper_connector *fb_helper_connector; |
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55 | |||
56 | fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); |
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57 | if (!fb_helper_connector) |
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58 | goto fail; |
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59 | |||
60 | fb_helper_connector->connector = connector; |
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61 | fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; |
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62 | } |
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1221 | serge | 63 | return 0; |
1963 | serge | 64 | fail: |
65 | for (i = 0; i < fb_helper->connector_count; i++) { |
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66 | kfree(fb_helper->connector_info[i]); |
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67 | fb_helper->connector_info[i] = NULL; |
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68 | } |
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69 | fb_helper->connector_count = 0; |
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70 | return -ENOMEM; |
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1221 | serge | 71 | } |
1963 | serge | 72 | EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors); |
1221 | serge | 73 | |
1963 | serge | 74 | static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) |
1179 | serge | 75 | { |
1963 | serge | 76 | uint16_t *r_base, *g_base, *b_base; |
77 | int i; |
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1179 | serge | 78 | |
1963 | serge | 79 | r_base = crtc->gamma_store; |
80 | g_base = r_base + crtc->gamma_size; |
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81 | b_base = g_base + crtc->gamma_size; |
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1179 | serge | 82 | |
1963 | serge | 83 | for (i = 0; i < crtc->gamma_size; i++) |
84 | helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i); |
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1179 | serge | 85 | } |
86 | |||
1963 | serge | 87 | static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) |
1179 | serge | 88 | { |
1963 | serge | 89 | uint16_t *r_base, *g_base, *b_base; |
90 | |||
3031 | serge | 91 | if (crtc->funcs->gamma_set == NULL) |
92 | return; |
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93 | |||
1963 | serge | 94 | r_base = crtc->gamma_store; |
95 | g_base = r_base + crtc->gamma_size; |
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96 | b_base = g_base + crtc->gamma_size; |
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97 | |||
98 | crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); |
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1179 | serge | 99 | } |
100 | |||
101 | |||
102 | |||
3031 | serge | 103 | static void drm_fb_helper_dpms(struct fb_info *info, int dpms_mode) |
1179 | serge | 104 | { |
105 | struct drm_fb_helper *fb_helper = info->par; |
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106 | struct drm_device *dev = fb_helper->dev; |
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107 | struct drm_crtc *crtc; |
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1963 | serge | 108 | struct drm_connector *connector; |
109 | int i, j; |
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1179 | serge | 110 | |
111 | /* |
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3031 | serge | 112 | * For each CRTC in this fb, turn the connectors on/off. |
1179 | serge | 113 | */ |
1963 | serge | 114 | mutex_lock(&dev->mode_config.mutex); |
1179 | serge | 115 | for (i = 0; i < fb_helper->crtc_count; i++) { |
1963 | serge | 116 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
1179 | serge | 117 | |
1963 | serge | 118 | if (!crtc->enabled) |
1179 | serge | 119 | continue; |
120 | |||
3031 | serge | 121 | /* Walk the connectors & encoders on this fb turning them on/off */ |
1963 | serge | 122 | for (j = 0; j < fb_helper->connector_count; j++) { |
123 | connector = fb_helper->connector_info[j]->connector; |
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3031 | serge | 124 | connector->funcs->dpms(connector, dpms_mode); |
1963 | serge | 125 | drm_connector_property_set_value(connector, |
3031 | serge | 126 | dev->mode_config.dpms_property, dpms_mode); |
1963 | serge | 127 | } |
128 | } |
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1179 | serge | 129 | mutex_unlock(&dev->mode_config.mutex); |
130 | } |
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131 | |||
132 | int drm_fb_helper_blank(int blank, struct fb_info *info) |
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133 | { |
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134 | switch (blank) { |
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1321 | serge | 135 | /* Display: On; HSync: On, VSync: On */ |
1179 | serge | 136 | case FB_BLANK_UNBLANK: |
3031 | serge | 137 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_ON); |
1179 | serge | 138 | break; |
1321 | serge | 139 | /* Display: Off; HSync: On, VSync: On */ |
1179 | serge | 140 | case FB_BLANK_NORMAL: |
3031 | serge | 141 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); |
1179 | serge | 142 | break; |
1321 | serge | 143 | /* Display: Off; HSync: Off, VSync: On */ |
1179 | serge | 144 | case FB_BLANK_HSYNC_SUSPEND: |
3031 | serge | 145 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); |
1179 | serge | 146 | break; |
1321 | serge | 147 | /* Display: Off; HSync: On, VSync: Off */ |
1179 | serge | 148 | case FB_BLANK_VSYNC_SUSPEND: |
3031 | serge | 149 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_SUSPEND); |
1179 | serge | 150 | break; |
1321 | serge | 151 | /* Display: Off; HSync: Off, VSync: Off */ |
1179 | serge | 152 | case FB_BLANK_POWERDOWN: |
3031 | serge | 153 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_OFF); |
1179 | serge | 154 | break; |
155 | } |
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156 | return 0; |
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157 | } |
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158 | EXPORT_SYMBOL(drm_fb_helper_blank); |
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159 | |||
160 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) |
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161 | { |
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162 | int i; |
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163 | |||
1963 | serge | 164 | for (i = 0; i < helper->connector_count; i++) |
165 | kfree(helper->connector_info[i]); |
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166 | kfree(helper->connector_info); |
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3031 | serge | 167 | for (i = 0; i < helper->crtc_count; i++) { |
1179 | serge | 168 | kfree(helper->crtc_info[i].mode_set.connectors); |
3031 | serge | 169 | if (helper->crtc_info[i].mode_set.mode) |
170 | drm_mode_destroy(helper->dev, helper->crtc_info[i].mode_set.mode); |
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171 | } |
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1179 | serge | 172 | kfree(helper->crtc_info); |
173 | } |
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174 | |||
1963 | serge | 175 | int drm_fb_helper_init(struct drm_device *dev, |
176 | struct drm_fb_helper *fb_helper, |
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177 | int crtc_count, int max_conn_count) |
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1179 | serge | 178 | { |
179 | struct drm_crtc *crtc; |
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180 | int i; |
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181 | |||
1963 | serge | 182 | fb_helper->dev = dev; |
183 | |||
184 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); |
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185 | |||
186 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); |
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187 | if (!fb_helper->crtc_info) |
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1179 | serge | 188 | return -ENOMEM; |
189 | |||
1963 | serge | 190 | fb_helper->crtc_count = crtc_count; |
191 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); |
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192 | if (!fb_helper->connector_info) { |
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193 | kfree(fb_helper->crtc_info); |
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194 | return -ENOMEM; |
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195 | } |
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196 | fb_helper->connector_count = 0; |
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1179 | serge | 197 | |
198 | for (i = 0; i < crtc_count; i++) { |
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1963 | serge | 199 | fb_helper->crtc_info[i].mode_set.connectors = |
1179 | serge | 200 | kcalloc(max_conn_count, |
201 | sizeof(struct drm_connector *), |
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202 | GFP_KERNEL); |
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203 | |||
3031 | serge | 204 | if (!fb_helper->crtc_info[i].mode_set.connectors) |
1179 | serge | 205 | goto out_free; |
1963 | serge | 206 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
1179 | serge | 207 | } |
208 | |||
209 | i = 0; |
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210 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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1963 | serge | 211 | fb_helper->crtc_info[i].mode_set.crtc = crtc; |
1179 | serge | 212 | i++; |
213 | } |
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3031 | serge | 214 | |
1179 | serge | 215 | return 0; |
216 | out_free: |
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1963 | serge | 217 | drm_fb_helper_crtc_free(fb_helper); |
1179 | serge | 218 | return -ENOMEM; |
219 | } |
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1963 | serge | 220 | EXPORT_SYMBOL(drm_fb_helper_init); |
1179 | serge | 221 | |
1246 | serge | 222 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
1221 | serge | 223 | u16 blue, u16 regno, struct fb_info *info) |
224 | { |
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225 | struct drm_fb_helper *fb_helper = info->par; |
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226 | struct drm_framebuffer *fb = fb_helper->fb; |
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227 | int pindex; |
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228 | |||
1246 | serge | 229 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
230 | u32 *palette; |
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231 | u32 value; |
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232 | /* place color in psuedopalette */ |
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233 | if (regno > 16) |
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234 | return -EINVAL; |
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235 | palette = (u32 *)info->pseudo_palette; |
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236 | red >>= (16 - info->var.red.length); |
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237 | green >>= (16 - info->var.green.length); |
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238 | blue >>= (16 - info->var.blue.length); |
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239 | value = (red << info->var.red.offset) | |
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240 | (green << info->var.green.offset) | |
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241 | (blue << info->var.blue.offset); |
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1963 | serge | 242 | if (info->var.transp.length > 0) { |
243 | u32 mask = (1 << info->var.transp.length) - 1; |
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244 | mask <<= info->var.transp.offset; |
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245 | value |= mask; |
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246 | } |
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1246 | serge | 247 | palette[regno] = value; |
248 | return 0; |
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249 | } |
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250 | |||
1221 | serge | 251 | pindex = regno; |
252 | |||
253 | if (fb->bits_per_pixel == 16) { |
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254 | pindex = regno << 3; |
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255 | |||
256 | if (fb->depth == 16 && regno > 63) |
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1246 | serge | 257 | return -EINVAL; |
1221 | serge | 258 | if (fb->depth == 15 && regno > 31) |
1246 | serge | 259 | return -EINVAL; |
1221 | serge | 260 | |
261 | if (fb->depth == 16) { |
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262 | u16 r, g, b; |
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263 | int i; |
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264 | if (regno < 32) { |
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265 | for (i = 0; i < 8; i++) |
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266 | fb_helper->funcs->gamma_set(crtc, red, |
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267 | green, blue, pindex + i); |
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268 | } |
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269 | |||
270 | fb_helper->funcs->gamma_get(crtc, &r, |
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271 | &g, &b, |
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272 | pindex >> 1); |
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273 | |||
274 | for (i = 0; i < 4; i++) |
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275 | fb_helper->funcs->gamma_set(crtc, r, |
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276 | green, b, |
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277 | (pindex >> 1) + i); |
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278 | } |
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279 | } |
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280 | |||
281 | if (fb->depth != 16) |
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282 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); |
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1246 | serge | 283 | return 0; |
1221 | serge | 284 | } |
285 | |||
286 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
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287 | { |
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288 | struct drm_fb_helper *fb_helper = info->par; |
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1963 | serge | 289 | struct drm_crtc_helper_funcs *crtc_funcs; |
1221 | serge | 290 | u16 *red, *green, *blue, *transp; |
291 | struct drm_crtc *crtc; |
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1963 | serge | 292 | int i, j, rc = 0; |
1221 | serge | 293 | int start; |
294 | |||
295 | for (i = 0; i < fb_helper->crtc_count; i++) { |
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1963 | serge | 296 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
297 | crtc_funcs = crtc->helper_private; |
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1221 | serge | 298 | |
299 | red = cmap->red; |
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300 | green = cmap->green; |
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301 | blue = cmap->blue; |
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302 | transp = cmap->transp; |
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303 | start = cmap->start; |
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304 | |||
1963 | serge | 305 | for (j = 0; j < cmap->len; j++) { |
1221 | serge | 306 | u16 hred, hgreen, hblue, htransp = 0xffff; |
307 | |||
308 | hred = *red++; |
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309 | hgreen = *green++; |
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310 | hblue = *blue++; |
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311 | |||
312 | if (transp) |
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313 | htransp = *transp++; |
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314 | |||
1246 | serge | 315 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
316 | if (rc) |
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317 | return rc; |
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1221 | serge | 318 | } |
319 | crtc_funcs->load_lut(crtc); |
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320 | } |
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321 | return rc; |
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322 | } |
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323 | EXPORT_SYMBOL(drm_fb_helper_setcmap); |
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324 | |||
1179 | serge | 325 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
326 | struct fb_info *info) |
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327 | { |
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328 | struct drm_fb_helper *fb_helper = info->par; |
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329 | struct drm_framebuffer *fb = fb_helper->fb; |
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330 | int depth; |
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331 | |||
1963 | serge | 332 | if (var->pixclock != 0 || in_dbg_master()) |
1179 | serge | 333 | return -EINVAL; |
334 | |||
335 | /* Need to resize the fb object !!! */ |
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3031 | serge | 336 | if (var->bits_per_pixel > fb->bits_per_pixel || |
337 | var->xres > fb->width || var->yres > fb->height || |
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338 | var->xres_virtual > fb->width || var->yres_virtual > fb->height) { |
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1404 | serge | 339 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " |
3031 | serge | 340 | "request %dx%d-%d (virtual %dx%d) > %dx%d-%d\n", |
341 | var->xres, var->yres, var->bits_per_pixel, |
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342 | var->xres_virtual, var->yres_virtual, |
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1404 | serge | 343 | fb->width, fb->height, fb->bits_per_pixel); |
1179 | serge | 344 | return -EINVAL; |
345 | } |
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346 | |||
347 | switch (var->bits_per_pixel) { |
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348 | case 16: |
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349 | depth = (var->green.length == 6) ? 16 : 15; |
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350 | break; |
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351 | case 32: |
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352 | depth = (var->transp.length > 0) ? 32 : 24; |
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353 | break; |
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354 | default: |
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355 | depth = var->bits_per_pixel; |
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356 | break; |
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357 | } |
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358 | |||
359 | switch (depth) { |
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360 | case 8: |
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361 | var->red.offset = 0; |
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362 | var->green.offset = 0; |
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363 | var->blue.offset = 0; |
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364 | var->red.length = 8; |
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365 | var->green.length = 8; |
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366 | var->blue.length = 8; |
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367 | var->transp.length = 0; |
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368 | var->transp.offset = 0; |
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369 | break; |
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370 | case 15: |
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371 | var->red.offset = 10; |
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372 | var->green.offset = 5; |
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373 | var->blue.offset = 0; |
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374 | var->red.length = 5; |
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375 | var->green.length = 5; |
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376 | var->blue.length = 5; |
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377 | var->transp.length = 1; |
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378 | var->transp.offset = 15; |
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379 | break; |
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380 | case 16: |
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381 | var->red.offset = 11; |
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382 | var->green.offset = 5; |
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383 | var->blue.offset = 0; |
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384 | var->red.length = 5; |
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385 | var->green.length = 6; |
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386 | var->blue.length = 5; |
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387 | var->transp.length = 0; |
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388 | var->transp.offset = 0; |
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389 | break; |
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390 | case 24: |
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391 | var->red.offset = 16; |
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392 | var->green.offset = 8; |
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393 | var->blue.offset = 0; |
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394 | var->red.length = 8; |
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395 | var->green.length = 8; |
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396 | var->blue.length = 8; |
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397 | var->transp.length = 0; |
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398 | var->transp.offset = 0; |
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399 | break; |
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400 | case 32: |
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401 | var->red.offset = 16; |
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402 | var->green.offset = 8; |
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403 | var->blue.offset = 0; |
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404 | var->red.length = 8; |
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405 | var->green.length = 8; |
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406 | var->blue.length = 8; |
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407 | var->transp.length = 8; |
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408 | var->transp.offset = 24; |
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409 | break; |
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410 | default: |
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411 | return -EINVAL; |
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412 | } |
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413 | return 0; |
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414 | } |
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415 | EXPORT_SYMBOL(drm_fb_helper_check_var); |
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416 | |||
417 | /* this will let fbcon do the mode init */ |
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418 | int drm_fb_helper_set_par(struct fb_info *info) |
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419 | { |
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420 | struct drm_fb_helper *fb_helper = info->par; |
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421 | struct drm_device *dev = fb_helper->dev; |
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422 | struct fb_var_screeninfo *var = &info->var; |
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423 | struct drm_crtc *crtc; |
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424 | int ret; |
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425 | int i; |
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426 | |||
1313 | serge | 427 | if (var->pixclock != 0) { |
1430 | serge | 428 | DRM_ERROR("PIXEL CLOCK SET\n"); |
1179 | serge | 429 | return -EINVAL; |
430 | } |
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431 | |||
1963 | serge | 432 | mutex_lock(&dev->mode_config.mutex); |
1179 | serge | 433 | for (i = 0; i < fb_helper->crtc_count; i++) { |
1963 | serge | 434 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
1268 | serge | 435 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
1963 | serge | 436 | if (ret) { |
1179 | serge | 437 | mutex_unlock(&dev->mode_config.mutex); |
438 | return ret; |
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439 | } |
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440 | } |
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1963 | serge | 441 | mutex_unlock(&dev->mode_config.mutex); |
442 | |||
443 | if (fb_helper->delayed_hotplug) { |
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444 | fb_helper->delayed_hotplug = false; |
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445 | // drm_fb_helper_hotplug_event(fb_helper); |
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446 | } |
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1179 | serge | 447 | return 0; |
448 | } |
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449 | EXPORT_SYMBOL(drm_fb_helper_set_par); |
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450 | |||
451 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, |
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452 | struct fb_info *info) |
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453 | { |
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454 | struct drm_fb_helper *fb_helper = info->par; |
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455 | struct drm_device *dev = fb_helper->dev; |
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456 | struct drm_mode_set *modeset; |
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457 | struct drm_crtc *crtc; |
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458 | int ret = 0; |
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459 | int i; |
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460 | |||
1963 | serge | 461 | mutex_lock(&dev->mode_config.mutex); |
1179 | serge | 462 | for (i = 0; i < fb_helper->crtc_count; i++) { |
1963 | serge | 463 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
1179 | serge | 464 | |
465 | modeset = &fb_helper->crtc_info[i].mode_set; |
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466 | |||
467 | modeset->x = var->xoffset; |
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468 | modeset->y = var->yoffset; |
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469 | |||
470 | if (modeset->num_connectors) { |
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471 | ret = crtc->funcs->set_config(modeset); |
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472 | if (!ret) { |
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473 | info->var.xoffset = var->xoffset; |
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474 | info->var.yoffset = var->yoffset; |
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475 | } |
||
476 | } |
||
477 | } |
||
1963 | serge | 478 | mutex_unlock(&dev->mode_config.mutex); |
1179 | serge | 479 | return ret; |
480 | } |
||
481 | EXPORT_SYMBOL(drm_fb_helper_pan_display); |
||
482 | |||
1963 | serge | 483 | int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
484 | int preferred_bpp) |
||
1179 | serge | 485 | { |
486 | int new_fb = 0; |
||
487 | int crtc_count = 0; |
||
1963 | serge | 488 | int i; |
1179 | serge | 489 | struct fb_info *info; |
1963 | serge | 490 | struct drm_fb_helper_surface_size sizes; |
491 | int gamma_size = 0; |
||
1179 | serge | 492 | |
1963 | serge | 493 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); |
494 | sizes.surface_depth = 24; |
||
495 | sizes.surface_bpp = 32; |
||
496 | sizes.fb_width = (unsigned)-1; |
||
497 | sizes.fb_height = (unsigned)-1; |
||
1221 | serge | 498 | |
3031 | serge | 499 | /* if driver picks 8 or 16 by default use that |
500 | for both depth/bpp */ |
||
501 | if (preferred_bpp != sizes.surface_bpp) { |
||
502 | sizes.surface_depth = sizes.surface_bpp = preferred_bpp; |
||
503 | } |
||
504 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
||
505 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
506 | struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; |
||
507 | struct drm_cmdline_mode *cmdline_mode; |
||
508 | |||
509 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
||
510 | |||
511 | if (cmdline_mode->bpp_specified) { |
||
512 | switch (cmdline_mode->bpp) { |
||
513 | case 8: |
||
514 | sizes.surface_depth = sizes.surface_bpp = 8; |
||
515 | break; |
||
516 | case 15: |
||
517 | sizes.surface_depth = 15; |
||
518 | sizes.surface_bpp = 16; |
||
519 | break; |
||
520 | case 16: |
||
521 | sizes.surface_depth = sizes.surface_bpp = 16; |
||
522 | break; |
||
523 | case 24: |
||
524 | sizes.surface_depth = sizes.surface_bpp = 24; |
||
525 | break; |
||
526 | case 32: |
||
1963 | serge | 527 | sizes.surface_depth = 24; |
528 | sizes.surface_bpp = 32; |
||
3031 | serge | 529 | break; |
530 | } |
||
531 | break; |
||
532 | } |
||
533 | } |
||
1221 | serge | 534 | |
1963 | serge | 535 | crtc_count = 0; |
536 | for (i = 0; i < fb_helper->crtc_count; i++) { |
||
537 | struct drm_display_mode *desired_mode; |
||
538 | desired_mode = fb_helper->crtc_info[i].desired_mode; |
||
1221 | serge | 539 | |
1963 | serge | 540 | if (desired_mode) { |
541 | if (gamma_size == 0) |
||
542 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; |
||
543 | if (desired_mode->hdisplay < sizes.fb_width) |
||
544 | sizes.fb_width = desired_mode->hdisplay; |
||
545 | if (desired_mode->vdisplay < sizes.fb_height) |
||
546 | sizes.fb_height = desired_mode->vdisplay; |
||
547 | if (desired_mode->hdisplay > sizes.surface_width) |
||
548 | sizes.surface_width = desired_mode->hdisplay; |
||
549 | if (desired_mode->vdisplay > sizes.surface_height) |
||
550 | sizes.surface_height = desired_mode->vdisplay; |
||
1179 | serge | 551 | crtc_count++; |
552 | } |
||
553 | } |
||
554 | |||
1963 | serge | 555 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
1179 | serge | 556 | /* hmm everyone went away - assume VGA cable just fell out |
557 | and will come back later. */ |
||
1963 | serge | 558 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
559 | sizes.fb_width = sizes.surface_width = 1024; |
||
560 | sizes.fb_height = sizes.surface_height = 768; |
||
1179 | serge | 561 | } |
562 | |||
1963 | serge | 563 | /* push down into drivers */ |
564 | new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
||
565 | if (new_fb < 0) |
||
566 | return new_fb; |
||
1179 | serge | 567 | |
1963 | serge | 568 | info = fb_helper->fbdev; |
1179 | serge | 569 | |
1963 | serge | 570 | /* set the fb pointer */ |
571 | for (i = 0; i < fb_helper->crtc_count; i++) { |
||
572 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; |
||
1179 | serge | 573 | } |
574 | |||
575 | if (new_fb) { |
||
1313 | serge | 576 | info->var.pixclock = 0; |
1963 | serge | 577 | |
578 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, |
||
579 | info->fix.id); |
||
580 | |||
1179 | serge | 581 | } else { |
582 | drm_fb_helper_set_par(info); |
||
583 | } |
||
584 | |||
1963 | serge | 585 | |
586 | if (new_fb) |
||
587 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); |
||
588 | |||
1179 | serge | 589 | return 0; |
590 | } |
||
591 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); |
||
592 | |||
1221 | serge | 593 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
594 | uint32_t depth) |
||
1179 | serge | 595 | { |
596 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
||
1221 | serge | 597 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : |
1246 | serge | 598 | FB_VISUAL_TRUECOLOR; |
1963 | serge | 599 | info->fix.mmio_start = 0; |
600 | info->fix.mmio_len = 0; |
||
1179 | serge | 601 | info->fix.type_aux = 0; |
602 | info->fix.xpanstep = 1; /* doing it in hw */ |
||
603 | info->fix.ypanstep = 1; /* doing it in hw */ |
||
604 | info->fix.ywrapstep = 0; |
||
605 | info->fix.accel = FB_ACCEL_NONE; |
||
606 | info->fix.type_aux = 0; |
||
607 | |||
608 | info->fix.line_length = pitch; |
||
609 | return; |
||
610 | } |
||
611 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); |
||
612 | |||
1963 | serge | 613 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
1179 | serge | 614 | uint32_t fb_width, uint32_t fb_height) |
615 | { |
||
1963 | serge | 616 | struct drm_framebuffer *fb = fb_helper->fb; |
617 | info->pseudo_palette = fb_helper->pseudo_palette; |
||
1179 | serge | 618 | info->var.xres_virtual = fb->width; |
619 | info->var.yres_virtual = fb->height; |
||
620 | info->var.bits_per_pixel = fb->bits_per_pixel; |
||
1963 | serge | 621 | info->var.accel_flags = FB_ACCELF_TEXT; |
1179 | serge | 622 | info->var.xoffset = 0; |
623 | info->var.yoffset = 0; |
||
624 | info->var.activate = FB_ACTIVATE_NOW; |
||
625 | info->var.height = -1; |
||
626 | info->var.width = -1; |
||
627 | |||
628 | switch (fb->depth) { |
||
629 | case 8: |
||
630 | info->var.red.offset = 0; |
||
631 | info->var.green.offset = 0; |
||
632 | info->var.blue.offset = 0; |
||
633 | info->var.red.length = 8; /* 8bit DAC */ |
||
634 | info->var.green.length = 8; |
||
635 | info->var.blue.length = 8; |
||
636 | info->var.transp.offset = 0; |
||
637 | info->var.transp.length = 0; |
||
638 | break; |
||
639 | case 15: |
||
640 | info->var.red.offset = 10; |
||
641 | info->var.green.offset = 5; |
||
642 | info->var.blue.offset = 0; |
||
643 | info->var.red.length = 5; |
||
644 | info->var.green.length = 5; |
||
645 | info->var.blue.length = 5; |
||
646 | info->var.transp.offset = 15; |
||
647 | info->var.transp.length = 1; |
||
648 | break; |
||
649 | case 16: |
||
650 | info->var.red.offset = 11; |
||
651 | info->var.green.offset = 5; |
||
652 | info->var.blue.offset = 0; |
||
653 | info->var.red.length = 5; |
||
654 | info->var.green.length = 6; |
||
655 | info->var.blue.length = 5; |
||
656 | info->var.transp.offset = 0; |
||
657 | break; |
||
658 | case 24: |
||
659 | info->var.red.offset = 16; |
||
660 | info->var.green.offset = 8; |
||
661 | info->var.blue.offset = 0; |
||
662 | info->var.red.length = 8; |
||
663 | info->var.green.length = 8; |
||
664 | info->var.blue.length = 8; |
||
665 | info->var.transp.offset = 0; |
||
666 | info->var.transp.length = 0; |
||
667 | break; |
||
668 | case 32: |
||
669 | info->var.red.offset = 16; |
||
670 | info->var.green.offset = 8; |
||
671 | info->var.blue.offset = 0; |
||
672 | info->var.red.length = 8; |
||
673 | info->var.green.length = 8; |
||
674 | info->var.blue.length = 8; |
||
675 | info->var.transp.offset = 24; |
||
676 | info->var.transp.length = 8; |
||
677 | break; |
||
678 | default: |
||
679 | break; |
||
680 | } |
||
681 | |||
682 | info->var.xres = fb_width; |
||
683 | info->var.yres = fb_height; |
||
684 | } |
||
685 | EXPORT_SYMBOL(drm_fb_helper_fill_var); |
||
1963 | serge | 686 | |
687 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
||
688 | uint32_t maxX, |
||
689 | uint32_t maxY) |
||
690 | { |
||
691 | struct drm_connector *connector; |
||
692 | int count = 0; |
||
693 | int i; |
||
694 | |||
695 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
696 | connector = fb_helper->connector_info[i]->connector; |
||
697 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
||
698 | } |
||
699 | |||
700 | return count; |
||
701 | } |
||
702 | |||
703 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
||
704 | { |
||
705 | struct drm_display_mode *mode; |
||
706 | |||
707 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
||
708 | if (drm_mode_width(mode) > width || |
||
709 | drm_mode_height(mode) > height) |
||
710 | continue; |
||
711 | if (mode->type & DRM_MODE_TYPE_PREFERRED) |
||
712 | return mode; |
||
713 | } |
||
714 | return NULL; |
||
715 | } |
||
716 | |||
717 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
||
718 | { |
||
719 | struct drm_cmdline_mode *cmdline_mode; |
||
720 | cmdline_mode = &fb_connector->cmdline_mode; |
||
721 | return cmdline_mode->specified; |
||
722 | } |
||
723 | |||
724 | |||
725 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) |
||
726 | { |
||
727 | bool enable; |
||
728 | |||
729 | if (strict) { |
||
730 | enable = connector->status == connector_status_connected; |
||
731 | } else { |
||
732 | enable = connector->status != connector_status_disconnected; |
||
733 | } |
||
734 | return enable; |
||
735 | } |
||
736 | |||
737 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
||
738 | bool *enabled) |
||
739 | { |
||
740 | bool any_enabled = false; |
||
741 | struct drm_connector *connector; |
||
742 | int i = 0; |
||
743 | |||
744 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
745 | connector = fb_helper->connector_info[i]->connector; |
||
746 | enabled[i] = drm_connector_enabled(connector, true); |
||
747 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, |
||
748 | enabled[i] ? "yes" : "no"); |
||
749 | any_enabled |= enabled[i]; |
||
750 | } |
||
751 | |||
752 | if (any_enabled) |
||
753 | return; |
||
754 | |||
755 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
756 | connector = fb_helper->connector_info[i]->connector; |
||
757 | enabled[i] = drm_connector_enabled(connector, false); |
||
758 | } |
||
759 | } |
||
760 | |||
761 | |||
762 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
||
763 | struct drm_display_mode **modes, |
||
764 | bool *enabled, int width, int height) |
||
765 | { |
||
766 | struct drm_fb_helper_connector *fb_helper_conn; |
||
767 | int i; |
||
768 | |||
769 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
770 | fb_helper_conn = fb_helper->connector_info[i]; |
||
771 | |||
772 | if (enabled[i] == false) |
||
773 | continue; |
||
774 | |||
775 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", |
||
776 | fb_helper_conn->connector->base.id); |
||
777 | |||
778 | /* got for command line mode first */ |
||
779 | // modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
||
780 | |||
781 | modes[i] = NULL; |
||
782 | |||
783 | if (!modes[i]) { |
||
784 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", |
||
785 | fb_helper_conn->connector->base.id); |
||
786 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); |
||
787 | } |
||
788 | /* No preferred modes, pick one off the list */ |
||
789 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
||
790 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) |
||
791 | break; |
||
792 | } |
||
793 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : |
||
794 | "none"); |
||
795 | } |
||
796 | return true; |
||
797 | } |
||
798 | |||
799 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
||
800 | struct drm_fb_helper_crtc **best_crtcs, |
||
801 | struct drm_display_mode **modes, |
||
802 | int n, int width, int height) |
||
803 | { |
||
804 | int c, o; |
||
805 | struct drm_device *dev = fb_helper->dev; |
||
806 | struct drm_connector *connector; |
||
807 | struct drm_connector_helper_funcs *connector_funcs; |
||
808 | struct drm_encoder *encoder; |
||
809 | struct drm_fb_helper_crtc *best_crtc; |
||
810 | int my_score, best_score, score; |
||
811 | struct drm_fb_helper_crtc **crtcs, *crtc; |
||
812 | struct drm_fb_helper_connector *fb_helper_conn; |
||
813 | |||
814 | if (n == fb_helper->connector_count) |
||
815 | return 0; |
||
816 | |||
817 | fb_helper_conn = fb_helper->connector_info[n]; |
||
818 | connector = fb_helper_conn->connector; |
||
819 | |||
820 | best_crtcs[n] = NULL; |
||
821 | best_crtc = NULL; |
||
822 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
||
823 | if (modes[n] == NULL) |
||
824 | return best_score; |
||
825 | |||
826 | crtcs = kzalloc(dev->mode_config.num_connector * |
||
827 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
||
828 | if (!crtcs) |
||
829 | return best_score; |
||
830 | |||
831 | my_score = 1; |
||
832 | if (connector->status == connector_status_connected) |
||
833 | my_score++; |
||
834 | if (drm_has_cmdline_mode(fb_helper_conn)) |
||
835 | my_score++; |
||
836 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
||
837 | my_score++; |
||
838 | |||
839 | connector_funcs = connector->helper_private; |
||
840 | encoder = connector_funcs->best_encoder(connector); |
||
841 | if (!encoder) |
||
842 | goto out; |
||
843 | |||
844 | /* select a crtc for this connector and then attempt to configure |
||
845 | remaining connectors */ |
||
846 | for (c = 0; c < fb_helper->crtc_count; c++) { |
||
847 | crtc = &fb_helper->crtc_info[c]; |
||
848 | |||
849 | if ((encoder->possible_crtcs & (1 << c)) == 0) { |
||
850 | continue; |
||
851 | } |
||
852 | |||
853 | for (o = 0; o < n; o++) |
||
854 | if (best_crtcs[o] == crtc) |
||
855 | break; |
||
856 | |||
857 | if (o < n) { |
||
858 | /* ignore cloning unless only a single crtc */ |
||
859 | if (fb_helper->crtc_count > 1) |
||
860 | continue; |
||
861 | |||
862 | if (!drm_mode_equal(modes[o], modes[n])) |
||
863 | continue; |
||
864 | } |
||
865 | |||
866 | crtcs[n] = crtc; |
||
867 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
||
868 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, |
||
869 | width, height); |
||
870 | if (score > best_score) { |
||
871 | best_crtc = crtc; |
||
872 | best_score = score; |
||
873 | memcpy(best_crtcs, crtcs, |
||
874 | dev->mode_config.num_connector * |
||
875 | sizeof(struct drm_fb_helper_crtc *)); |
||
876 | } |
||
877 | } |
||
878 | out: |
||
879 | kfree(crtcs); |
||
880 | return best_score; |
||
881 | } |
||
882 | |||
883 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
||
884 | { |
||
885 | struct drm_device *dev = fb_helper->dev; |
||
886 | struct drm_fb_helper_crtc **crtcs; |
||
887 | struct drm_display_mode **modes; |
||
888 | struct drm_mode_set *modeset; |
||
889 | bool *enabled; |
||
890 | int width, height; |
||
891 | int i, ret; |
||
892 | |||
893 | DRM_DEBUG_KMS("\n"); |
||
894 | |||
895 | width = dev->mode_config.max_width; |
||
896 | height = dev->mode_config.max_height; |
||
897 | |||
898 | crtcs = kcalloc(dev->mode_config.num_connector, |
||
899 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
||
900 | modes = kcalloc(dev->mode_config.num_connector, |
||
901 | sizeof(struct drm_display_mode *), GFP_KERNEL); |
||
902 | enabled = kcalloc(dev->mode_config.num_connector, |
||
903 | sizeof(bool), GFP_KERNEL); |
||
904 | |||
905 | drm_enable_connectors(fb_helper, enabled); |
||
906 | |||
907 | //ret = drm_target_cloned(fb_helper, modes, enabled, width, height); |
||
908 | |||
909 | ret = 0; |
||
910 | |||
911 | if (!ret) { |
||
912 | ret = drm_target_preferred(fb_helper, modes, enabled, width, height); |
||
913 | if (!ret) |
||
914 | DRM_ERROR("Unable to find initial modes\n"); |
||
915 | } |
||
916 | |||
917 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); |
||
918 | |||
919 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
||
920 | |||
921 | /* need to set the modesets up here for use later */ |
||
922 | /* fill out the connector<->crtc mappings into the modesets */ |
||
923 | for (i = 0; i < fb_helper->crtc_count; i++) { |
||
924 | modeset = &fb_helper->crtc_info[i].mode_set; |
||
925 | modeset->num_connectors = 0; |
||
926 | } |
||
927 | |||
928 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
929 | struct drm_display_mode *mode = modes[i]; |
||
930 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
||
931 | modeset = &fb_crtc->mode_set; |
||
932 | |||
933 | if (mode && fb_crtc) { |
||
934 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
||
935 | mode->name, fb_crtc->mode_set.crtc->base.id); |
||
936 | fb_crtc->desired_mode = mode; |
||
937 | if (modeset->mode) |
||
938 | drm_mode_destroy(dev, modeset->mode); |
||
939 | modeset->mode = drm_mode_duplicate(dev, |
||
940 | fb_crtc->desired_mode); |
||
941 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
||
942 | } |
||
943 | } |
||
944 | |||
945 | kfree(crtcs); |
||
946 | kfree(modes); |
||
947 | kfree(enabled); |
||
948 | } |
||
949 | |||
950 | /** |
||
951 | * drm_helper_initial_config - setup a sane initial connector configuration |
||
952 | * @dev: DRM device |
||
953 | * |
||
954 | * LOCKING: |
||
955 | * Called at init time, must take mode config lock. |
||
956 | * |
||
957 | * Scan the CRTCs and connectors and try to put together an initial setup. |
||
958 | * At the moment, this is a cloned configuration across all heads with |
||
959 | * a new framebuffer object as the backing store. |
||
960 | * |
||
961 | * RETURNS: |
||
962 | * Zero if everything went ok, nonzero otherwise. |
||
963 | */ |
||
964 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
||
965 | { |
||
966 | struct drm_device *dev = fb_helper->dev; |
||
967 | int count = 0; |
||
968 | |||
969 | /* disable all the possible outputs/crtcs before entering KMS mode */ |
||
3031 | serge | 970 | drm_helper_disable_unused_functions(fb_helper->dev); |
1963 | serge | 971 | |
972 | // drm_fb_helper_parse_command_line(fb_helper); |
||
973 | |||
974 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
||
975 | dev->mode_config.max_width, |
||
976 | dev->mode_config.max_height); |
||
977 | /* |
||
978 | * we shouldn't end up with no modes here. |
||
979 | */ |
||
980 | if (count == 0) { |
||
981 | printk(KERN_INFO "No connectors reported connected with modes\n"); |
||
982 | } |
||
983 | drm_setup_crtcs(fb_helper); |
||
984 | |||
985 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
||
986 | } |
||
987 | EXPORT_SYMBOL(drm_fb_helper_initial_config);>>->>>><>>>>>>>>>>>>>>>>>>>><>=><=>><>><>><>><>>>>>>>> |