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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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3192 | Serge | 30 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
31 | |||
1430 | serge | 32 | #include |
1963 | serge | 33 | #include |
34 | #include |
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1179 | serge | 35 | #include |
3031 | serge | 36 | #include |
37 | #include |
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38 | #include |
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39 | #include |
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40 | #include |
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1179 | serge | 41 | |
1430 | serge | 42 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
43 | MODULE_DESCRIPTION("DRM KMS helper"); |
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44 | MODULE_LICENSE("GPL and additional rights"); |
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1179 | serge | 45 | |
46 | static LIST_HEAD(kernel_fb_helper_list); |
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47 | |||
3192 | Serge | 48 | /** |
49 | * DOC: fbdev helpers |
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50 | * |
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51 | * The fb helper functions are useful to provide an fbdev on top of a drm kernel |
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52 | * mode setting driver. They can be used mostly independantely from the crtc |
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53 | * helper functions used by many drivers to implement the kernel mode setting |
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54 | * interfaces. |
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55 | */ |
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56 | |||
1963 | serge | 57 | /* simple single crtc case helper function */ |
58 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) |
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1221 | serge | 59 | { |
1963 | serge | 60 | struct drm_device *dev = fb_helper->dev; |
61 | struct drm_connector *connector; |
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62 | int i; |
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1221 | serge | 63 | |
3192 | Serge | 64 | ENTER(); |
65 | |||
1963 | serge | 66 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
67 | struct drm_fb_helper_connector *fb_helper_connector; |
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68 | |||
69 | fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); |
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70 | if (!fb_helper_connector) |
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71 | goto fail; |
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72 | |||
73 | fb_helper_connector->connector = connector; |
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74 | fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; |
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75 | } |
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3192 | Serge | 76 | LEAVE(); |
1221 | serge | 77 | return 0; |
1963 | serge | 78 | fail: |
79 | for (i = 0; i < fb_helper->connector_count; i++) { |
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80 | kfree(fb_helper->connector_info[i]); |
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81 | fb_helper->connector_info[i] = NULL; |
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82 | } |
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83 | fb_helper->connector_count = 0; |
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3192 | Serge | 84 | FAIL(); |
1963 | serge | 85 | return -ENOMEM; |
1221 | serge | 86 | } |
1963 | serge | 87 | EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors); |
1221 | serge | 88 | |
1963 | serge | 89 | static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) |
1179 | serge | 90 | { |
1963 | serge | 91 | uint16_t *r_base, *g_base, *b_base; |
92 | int i; |
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1179 | serge | 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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1179 | serge | 97 | |
1963 | serge | 98 | for (i = 0; i < crtc->gamma_size; i++) |
99 | helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i); |
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1179 | serge | 100 | } |
101 | |||
1963 | serge | 102 | static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) |
1179 | serge | 103 | { |
1963 | serge | 104 | uint16_t *r_base, *g_base, *b_base; |
105 | |||
3031 | serge | 106 | if (crtc->funcs->gamma_set == NULL) |
107 | return; |
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108 | |||
1963 | serge | 109 | r_base = crtc->gamma_store; |
110 | g_base = r_base + crtc->gamma_size; |
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111 | b_base = g_base + crtc->gamma_size; |
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112 | |||
113 | crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); |
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1179 | serge | 114 | } |
115 | |||
116 | |||
117 | |||
3031 | serge | 118 | static void drm_fb_helper_dpms(struct fb_info *info, int dpms_mode) |
1179 | serge | 119 | { |
120 | struct drm_fb_helper *fb_helper = info->par; |
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121 | struct drm_device *dev = fb_helper->dev; |
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122 | struct drm_crtc *crtc; |
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1963 | serge | 123 | struct drm_connector *connector; |
124 | int i, j; |
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1179 | serge | 125 | |
126 | /* |
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3031 | serge | 127 | * For each CRTC in this fb, turn the connectors on/off. |
1179 | serge | 128 | */ |
1963 | serge | 129 | mutex_lock(&dev->mode_config.mutex); |
1179 | serge | 130 | for (i = 0; i < fb_helper->crtc_count; i++) { |
1963 | serge | 131 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
1179 | serge | 132 | |
1963 | serge | 133 | if (!crtc->enabled) |
1179 | serge | 134 | continue; |
135 | |||
3031 | serge | 136 | /* Walk the connectors & encoders on this fb turning them on/off */ |
1963 | serge | 137 | for (j = 0; j < fb_helper->connector_count; j++) { |
138 | connector = fb_helper->connector_info[j]->connector; |
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3031 | serge | 139 | connector->funcs->dpms(connector, dpms_mode); |
3192 | Serge | 140 | drm_object_property_set_value(&connector->base, |
3031 | serge | 141 | dev->mode_config.dpms_property, dpms_mode); |
1963 | serge | 142 | } |
143 | } |
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1179 | serge | 144 | mutex_unlock(&dev->mode_config.mutex); |
145 | } |
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146 | |||
147 | int drm_fb_helper_blank(int blank, struct fb_info *info) |
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148 | { |
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149 | switch (blank) { |
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1321 | serge | 150 | /* Display: On; HSync: On, VSync: On */ |
1179 | serge | 151 | case FB_BLANK_UNBLANK: |
3031 | serge | 152 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_ON); |
1179 | serge | 153 | break; |
1321 | serge | 154 | /* Display: Off; HSync: On, VSync: On */ |
1179 | serge | 155 | case FB_BLANK_NORMAL: |
3031 | serge | 156 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); |
1179 | serge | 157 | break; |
1321 | serge | 158 | /* Display: Off; HSync: Off, VSync: On */ |
1179 | serge | 159 | case FB_BLANK_HSYNC_SUSPEND: |
3031 | serge | 160 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); |
1179 | serge | 161 | break; |
1321 | serge | 162 | /* Display: Off; HSync: On, VSync: Off */ |
1179 | serge | 163 | case FB_BLANK_VSYNC_SUSPEND: |
3031 | serge | 164 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_SUSPEND); |
1179 | serge | 165 | break; |
1321 | serge | 166 | /* Display: Off; HSync: Off, VSync: Off */ |
1179 | serge | 167 | case FB_BLANK_POWERDOWN: |
3031 | serge | 168 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_OFF); |
1179 | serge | 169 | break; |
170 | } |
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171 | return 0; |
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172 | } |
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173 | EXPORT_SYMBOL(drm_fb_helper_blank); |
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174 | |||
175 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) |
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176 | { |
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177 | int i; |
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178 | |||
1963 | serge | 179 | for (i = 0; i < helper->connector_count; i++) |
180 | kfree(helper->connector_info[i]); |
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181 | kfree(helper->connector_info); |
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3031 | serge | 182 | for (i = 0; i < helper->crtc_count; i++) { |
1179 | serge | 183 | kfree(helper->crtc_info[i].mode_set.connectors); |
3031 | serge | 184 | if (helper->crtc_info[i].mode_set.mode) |
185 | drm_mode_destroy(helper->dev, helper->crtc_info[i].mode_set.mode); |
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186 | } |
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1179 | serge | 187 | kfree(helper->crtc_info); |
188 | } |
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189 | |||
1963 | serge | 190 | int drm_fb_helper_init(struct drm_device *dev, |
191 | struct drm_fb_helper *fb_helper, |
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192 | int crtc_count, int max_conn_count) |
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1179 | serge | 193 | { |
194 | struct drm_crtc *crtc; |
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195 | int i; |
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196 | |||
3192 | Serge | 197 | ENTER(); |
198 | |||
199 | dbgprintf("crtc_count %d max_conn_count %d\n", crtc_count, max_conn_count); |
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200 | |||
1963 | serge | 201 | fb_helper->dev = dev; |
202 | |||
203 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); |
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204 | |||
205 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); |
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206 | if (!fb_helper->crtc_info) |
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3192 | Serge | 207 | { |
208 | FAIL(); |
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1179 | serge | 209 | return -ENOMEM; |
3192 | Serge | 210 | }; |
1179 | serge | 211 | |
1963 | serge | 212 | fb_helper->crtc_count = crtc_count; |
213 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); |
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214 | if (!fb_helper->connector_info) { |
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215 | kfree(fb_helper->crtc_info); |
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3192 | Serge | 216 | FAIL(); |
1963 | serge | 217 | return -ENOMEM; |
218 | } |
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219 | fb_helper->connector_count = 0; |
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1179 | serge | 220 | |
221 | for (i = 0; i < crtc_count; i++) { |
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1963 | serge | 222 | fb_helper->crtc_info[i].mode_set.connectors = |
1179 | serge | 223 | kcalloc(max_conn_count, |
224 | sizeof(struct drm_connector *), |
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225 | GFP_KERNEL); |
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226 | |||
3031 | serge | 227 | if (!fb_helper->crtc_info[i].mode_set.connectors) |
1179 | serge | 228 | goto out_free; |
1963 | serge | 229 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
1179 | serge | 230 | } |
231 | |||
232 | i = 0; |
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233 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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1963 | serge | 234 | fb_helper->crtc_info[i].mode_set.crtc = crtc; |
1179 | serge | 235 | i++; |
236 | } |
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3031 | serge | 237 | |
3192 | Serge | 238 | LEAVE(); |
1179 | serge | 239 | return 0; |
240 | out_free: |
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1963 | serge | 241 | drm_fb_helper_crtc_free(fb_helper); |
3192 | Serge | 242 | FAIL(); |
1179 | serge | 243 | return -ENOMEM; |
244 | } |
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1963 | serge | 245 | EXPORT_SYMBOL(drm_fb_helper_init); |
1179 | serge | 246 | |
1246 | serge | 247 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
1221 | serge | 248 | u16 blue, u16 regno, struct fb_info *info) |
249 | { |
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250 | struct drm_fb_helper *fb_helper = info->par; |
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251 | struct drm_framebuffer *fb = fb_helper->fb; |
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252 | int pindex; |
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253 | |||
1246 | serge | 254 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
255 | u32 *palette; |
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256 | u32 value; |
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257 | /* place color in psuedopalette */ |
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258 | if (regno > 16) |
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259 | return -EINVAL; |
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260 | palette = (u32 *)info->pseudo_palette; |
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261 | red >>= (16 - info->var.red.length); |
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262 | green >>= (16 - info->var.green.length); |
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263 | blue >>= (16 - info->var.blue.length); |
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264 | value = (red << info->var.red.offset) | |
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265 | (green << info->var.green.offset) | |
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266 | (blue << info->var.blue.offset); |
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1963 | serge | 267 | if (info->var.transp.length > 0) { |
268 | u32 mask = (1 << info->var.transp.length) - 1; |
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269 | mask <<= info->var.transp.offset; |
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270 | value |= mask; |
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271 | } |
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1246 | serge | 272 | palette[regno] = value; |
273 | return 0; |
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274 | } |
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275 | |||
1221 | serge | 276 | pindex = regno; |
277 | |||
278 | if (fb->bits_per_pixel == 16) { |
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279 | pindex = regno << 3; |
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280 | |||
281 | if (fb->depth == 16 && regno > 63) |
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1246 | serge | 282 | return -EINVAL; |
1221 | serge | 283 | if (fb->depth == 15 && regno > 31) |
1246 | serge | 284 | return -EINVAL; |
1221 | serge | 285 | |
286 | if (fb->depth == 16) { |
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287 | u16 r, g, b; |
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288 | int i; |
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289 | if (regno < 32) { |
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290 | for (i = 0; i < 8; i++) |
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291 | fb_helper->funcs->gamma_set(crtc, red, |
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292 | green, blue, pindex + i); |
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293 | } |
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294 | |||
295 | fb_helper->funcs->gamma_get(crtc, &r, |
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296 | &g, &b, |
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297 | pindex >> 1); |
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298 | |||
299 | for (i = 0; i < 4; i++) |
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300 | fb_helper->funcs->gamma_set(crtc, r, |
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301 | green, b, |
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302 | (pindex >> 1) + i); |
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303 | } |
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304 | } |
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305 | |||
306 | if (fb->depth != 16) |
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307 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); |
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1246 | serge | 308 | return 0; |
1221 | serge | 309 | } |
310 | |||
311 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
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312 | { |
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313 | struct drm_fb_helper *fb_helper = info->par; |
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1963 | serge | 314 | struct drm_crtc_helper_funcs *crtc_funcs; |
1221 | serge | 315 | u16 *red, *green, *blue, *transp; |
316 | struct drm_crtc *crtc; |
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1963 | serge | 317 | int i, j, rc = 0; |
1221 | serge | 318 | int start; |
319 | |||
320 | for (i = 0; i < fb_helper->crtc_count; i++) { |
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1963 | serge | 321 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
322 | crtc_funcs = crtc->helper_private; |
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1221 | serge | 323 | |
324 | red = cmap->red; |
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325 | green = cmap->green; |
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326 | blue = cmap->blue; |
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327 | transp = cmap->transp; |
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328 | start = cmap->start; |
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329 | |||
1963 | serge | 330 | for (j = 0; j < cmap->len; j++) { |
1221 | serge | 331 | u16 hred, hgreen, hblue, htransp = 0xffff; |
332 | |||
333 | hred = *red++; |
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334 | hgreen = *green++; |
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335 | hblue = *blue++; |
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336 | |||
337 | if (transp) |
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338 | htransp = *transp++; |
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339 | |||
1246 | serge | 340 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
341 | if (rc) |
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342 | return rc; |
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1221 | serge | 343 | } |
344 | crtc_funcs->load_lut(crtc); |
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345 | } |
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346 | return rc; |
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347 | } |
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348 | EXPORT_SYMBOL(drm_fb_helper_setcmap); |
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349 | |||
1179 | serge | 350 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
351 | struct fb_info *info) |
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352 | { |
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353 | struct drm_fb_helper *fb_helper = info->par; |
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354 | struct drm_framebuffer *fb = fb_helper->fb; |
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355 | int depth; |
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356 | |||
1963 | serge | 357 | if (var->pixclock != 0 || in_dbg_master()) |
1179 | serge | 358 | return -EINVAL; |
359 | |||
360 | /* Need to resize the fb object !!! */ |
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3031 | serge | 361 | if (var->bits_per_pixel > fb->bits_per_pixel || |
362 | var->xres > fb->width || var->yres > fb->height || |
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363 | var->xres_virtual > fb->width || var->yres_virtual > fb->height) { |
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1404 | serge | 364 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " |
3031 | serge | 365 | "request %dx%d-%d (virtual %dx%d) > %dx%d-%d\n", |
366 | var->xres, var->yres, var->bits_per_pixel, |
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367 | var->xres_virtual, var->yres_virtual, |
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1404 | serge | 368 | fb->width, fb->height, fb->bits_per_pixel); |
1179 | serge | 369 | return -EINVAL; |
370 | } |
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371 | |||
372 | switch (var->bits_per_pixel) { |
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373 | case 16: |
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374 | depth = (var->green.length == 6) ? 16 : 15; |
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375 | break; |
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376 | case 32: |
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377 | depth = (var->transp.length > 0) ? 32 : 24; |
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378 | break; |
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379 | default: |
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380 | depth = var->bits_per_pixel; |
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381 | break; |
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382 | } |
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383 | |||
384 | switch (depth) { |
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385 | case 8: |
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386 | var->red.offset = 0; |
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387 | var->green.offset = 0; |
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388 | var->blue.offset = 0; |
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389 | var->red.length = 8; |
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390 | var->green.length = 8; |
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391 | var->blue.length = 8; |
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392 | var->transp.length = 0; |
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393 | var->transp.offset = 0; |
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394 | break; |
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395 | case 15: |
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396 | var->red.offset = 10; |
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397 | var->green.offset = 5; |
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398 | var->blue.offset = 0; |
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399 | var->red.length = 5; |
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400 | var->green.length = 5; |
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401 | var->blue.length = 5; |
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402 | var->transp.length = 1; |
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403 | var->transp.offset = 15; |
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404 | break; |
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405 | case 16: |
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406 | var->red.offset = 11; |
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407 | var->green.offset = 5; |
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408 | var->blue.offset = 0; |
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409 | var->red.length = 5; |
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410 | var->green.length = 6; |
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411 | var->blue.length = 5; |
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412 | var->transp.length = 0; |
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413 | var->transp.offset = 0; |
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414 | break; |
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415 | case 24: |
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416 | var->red.offset = 16; |
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417 | var->green.offset = 8; |
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418 | var->blue.offset = 0; |
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419 | var->red.length = 8; |
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420 | var->green.length = 8; |
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421 | var->blue.length = 8; |
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422 | var->transp.length = 0; |
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423 | var->transp.offset = 0; |
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424 | break; |
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425 | case 32: |
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426 | var->red.offset = 16; |
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427 | var->green.offset = 8; |
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428 | var->blue.offset = 0; |
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429 | var->red.length = 8; |
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430 | var->green.length = 8; |
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431 | var->blue.length = 8; |
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432 | var->transp.length = 8; |
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433 | var->transp.offset = 24; |
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434 | break; |
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435 | default: |
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436 | return -EINVAL; |
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437 | } |
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438 | return 0; |
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439 | } |
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440 | EXPORT_SYMBOL(drm_fb_helper_check_var); |
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441 | |||
442 | /* this will let fbcon do the mode init */ |
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443 | int drm_fb_helper_set_par(struct fb_info *info) |
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444 | { |
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445 | struct drm_fb_helper *fb_helper = info->par; |
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446 | struct drm_device *dev = fb_helper->dev; |
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447 | struct fb_var_screeninfo *var = &info->var; |
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448 | struct drm_crtc *crtc; |
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449 | int ret; |
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450 | int i; |
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451 | |||
1313 | serge | 452 | if (var->pixclock != 0) { |
1430 | serge | 453 | DRM_ERROR("PIXEL CLOCK SET\n"); |
1179 | serge | 454 | return -EINVAL; |
455 | } |
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456 | |||
1963 | serge | 457 | mutex_lock(&dev->mode_config.mutex); |
1179 | serge | 458 | for (i = 0; i < fb_helper->crtc_count; i++) { |
1963 | serge | 459 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
1268 | serge | 460 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
1963 | serge | 461 | if (ret) { |
1179 | serge | 462 | mutex_unlock(&dev->mode_config.mutex); |
463 | return ret; |
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464 | } |
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465 | } |
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1963 | serge | 466 | mutex_unlock(&dev->mode_config.mutex); |
467 | |||
468 | if (fb_helper->delayed_hotplug) { |
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469 | fb_helper->delayed_hotplug = false; |
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470 | // drm_fb_helper_hotplug_event(fb_helper); |
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471 | } |
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1179 | serge | 472 | return 0; |
473 | } |
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474 | EXPORT_SYMBOL(drm_fb_helper_set_par); |
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475 | |||
476 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, |
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477 | struct fb_info *info) |
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478 | { |
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479 | struct drm_fb_helper *fb_helper = info->par; |
||
480 | struct drm_device *dev = fb_helper->dev; |
||
481 | struct drm_mode_set *modeset; |
||
482 | struct drm_crtc *crtc; |
||
483 | int ret = 0; |
||
484 | int i; |
||
485 | |||
1963 | serge | 486 | mutex_lock(&dev->mode_config.mutex); |
1179 | serge | 487 | for (i = 0; i < fb_helper->crtc_count; i++) { |
1963 | serge | 488 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
1179 | serge | 489 | |
490 | modeset = &fb_helper->crtc_info[i].mode_set; |
||
491 | |||
492 | modeset->x = var->xoffset; |
||
493 | modeset->y = var->yoffset; |
||
494 | |||
495 | if (modeset->num_connectors) { |
||
496 | ret = crtc->funcs->set_config(modeset); |
||
497 | if (!ret) { |
||
498 | info->var.xoffset = var->xoffset; |
||
499 | info->var.yoffset = var->yoffset; |
||
500 | } |
||
501 | } |
||
502 | } |
||
1963 | serge | 503 | mutex_unlock(&dev->mode_config.mutex); |
1179 | serge | 504 | return ret; |
505 | } |
||
506 | EXPORT_SYMBOL(drm_fb_helper_pan_display); |
||
507 | |||
1963 | serge | 508 | int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
509 | int preferred_bpp) |
||
1179 | serge | 510 | { |
511 | int new_fb = 0; |
||
512 | int crtc_count = 0; |
||
1963 | serge | 513 | int i; |
1179 | serge | 514 | struct fb_info *info; |
1963 | serge | 515 | struct drm_fb_helper_surface_size sizes; |
516 | int gamma_size = 0; |
||
1179 | serge | 517 | |
1963 | serge | 518 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); |
519 | sizes.surface_depth = 24; |
||
520 | sizes.surface_bpp = 32; |
||
521 | sizes.fb_width = (unsigned)-1; |
||
522 | sizes.fb_height = (unsigned)-1; |
||
1221 | serge | 523 | |
3031 | serge | 524 | /* if driver picks 8 or 16 by default use that |
525 | for both depth/bpp */ |
||
3192 | Serge | 526 | if (preferred_bpp != sizes.surface_bpp) |
3031 | serge | 527 | sizes.surface_depth = sizes.surface_bpp = preferred_bpp; |
3192 | Serge | 528 | |
3031 | serge | 529 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
530 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
531 | struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; |
||
532 | struct drm_cmdline_mode *cmdline_mode; |
||
533 | |||
534 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
||
535 | |||
536 | if (cmdline_mode->bpp_specified) { |
||
537 | switch (cmdline_mode->bpp) { |
||
538 | case 8: |
||
539 | sizes.surface_depth = sizes.surface_bpp = 8; |
||
540 | break; |
||
541 | case 15: |
||
542 | sizes.surface_depth = 15; |
||
543 | sizes.surface_bpp = 16; |
||
544 | break; |
||
545 | case 16: |
||
546 | sizes.surface_depth = sizes.surface_bpp = 16; |
||
547 | break; |
||
548 | case 24: |
||
549 | sizes.surface_depth = sizes.surface_bpp = 24; |
||
550 | break; |
||
551 | case 32: |
||
1963 | serge | 552 | sizes.surface_depth = 24; |
553 | sizes.surface_bpp = 32; |
||
3031 | serge | 554 | break; |
555 | } |
||
556 | break; |
||
557 | } |
||
558 | } |
||
1221 | serge | 559 | |
1963 | serge | 560 | crtc_count = 0; |
561 | for (i = 0; i < fb_helper->crtc_count; i++) { |
||
562 | struct drm_display_mode *desired_mode; |
||
563 | desired_mode = fb_helper->crtc_info[i].desired_mode; |
||
1221 | serge | 564 | |
1963 | serge | 565 | if (desired_mode) { |
566 | if (gamma_size == 0) |
||
567 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; |
||
568 | if (desired_mode->hdisplay < sizes.fb_width) |
||
569 | sizes.fb_width = desired_mode->hdisplay; |
||
570 | if (desired_mode->vdisplay < sizes.fb_height) |
||
571 | sizes.fb_height = desired_mode->vdisplay; |
||
572 | if (desired_mode->hdisplay > sizes.surface_width) |
||
573 | sizes.surface_width = desired_mode->hdisplay; |
||
574 | if (desired_mode->vdisplay > sizes.surface_height) |
||
575 | sizes.surface_height = desired_mode->vdisplay; |
||
1179 | serge | 576 | crtc_count++; |
577 | } |
||
578 | } |
||
579 | |||
1963 | serge | 580 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
1179 | serge | 581 | /* hmm everyone went away - assume VGA cable just fell out |
582 | and will come back later. */ |
||
1963 | serge | 583 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
584 | sizes.fb_width = sizes.surface_width = 1024; |
||
585 | sizes.fb_height = sizes.surface_height = 768; |
||
1179 | serge | 586 | } |
587 | |||
1963 | serge | 588 | /* push down into drivers */ |
589 | new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
||
590 | if (new_fb < 0) |
||
591 | return new_fb; |
||
1179 | serge | 592 | |
1963 | serge | 593 | info = fb_helper->fbdev; |
1179 | serge | 594 | |
1963 | serge | 595 | /* set the fb pointer */ |
3192 | Serge | 596 | for (i = 0; i < fb_helper->crtc_count; i++) |
1963 | serge | 597 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; |
1179 | serge | 598 | |
599 | if (new_fb) { |
||
1313 | serge | 600 | info->var.pixclock = 0; |
1963 | serge | 601 | |
602 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, |
||
603 | info->fix.id); |
||
604 | |||
1179 | serge | 605 | } else { |
606 | drm_fb_helper_set_par(info); |
||
607 | } |
||
608 | |||
1963 | serge | 609 | |
610 | if (new_fb) |
||
611 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); |
||
612 | |||
1179 | serge | 613 | return 0; |
614 | } |
||
615 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); |
||
616 | |||
1221 | serge | 617 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
618 | uint32_t depth) |
||
1179 | serge | 619 | { |
620 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
||
1221 | serge | 621 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : |
1246 | serge | 622 | FB_VISUAL_TRUECOLOR; |
1963 | serge | 623 | info->fix.mmio_start = 0; |
624 | info->fix.mmio_len = 0; |
||
1179 | serge | 625 | info->fix.type_aux = 0; |
626 | info->fix.xpanstep = 1; /* doing it in hw */ |
||
627 | info->fix.ypanstep = 1; /* doing it in hw */ |
||
628 | info->fix.ywrapstep = 0; |
||
629 | info->fix.accel = FB_ACCEL_NONE; |
||
630 | info->fix.type_aux = 0; |
||
631 | |||
632 | info->fix.line_length = pitch; |
||
633 | return; |
||
634 | } |
||
635 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); |
||
636 | |||
1963 | serge | 637 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
1179 | serge | 638 | uint32_t fb_width, uint32_t fb_height) |
639 | { |
||
1963 | serge | 640 | struct drm_framebuffer *fb = fb_helper->fb; |
641 | info->pseudo_palette = fb_helper->pseudo_palette; |
||
1179 | serge | 642 | info->var.xres_virtual = fb->width; |
643 | info->var.yres_virtual = fb->height; |
||
644 | info->var.bits_per_pixel = fb->bits_per_pixel; |
||
1963 | serge | 645 | info->var.accel_flags = FB_ACCELF_TEXT; |
1179 | serge | 646 | info->var.xoffset = 0; |
647 | info->var.yoffset = 0; |
||
648 | info->var.activate = FB_ACTIVATE_NOW; |
||
649 | info->var.height = -1; |
||
650 | info->var.width = -1; |
||
651 | |||
652 | switch (fb->depth) { |
||
653 | case 8: |
||
654 | info->var.red.offset = 0; |
||
655 | info->var.green.offset = 0; |
||
656 | info->var.blue.offset = 0; |
||
657 | info->var.red.length = 8; /* 8bit DAC */ |
||
658 | info->var.green.length = 8; |
||
659 | info->var.blue.length = 8; |
||
660 | info->var.transp.offset = 0; |
||
661 | info->var.transp.length = 0; |
||
662 | break; |
||
663 | case 15: |
||
664 | info->var.red.offset = 10; |
||
665 | info->var.green.offset = 5; |
||
666 | info->var.blue.offset = 0; |
||
667 | info->var.red.length = 5; |
||
668 | info->var.green.length = 5; |
||
669 | info->var.blue.length = 5; |
||
670 | info->var.transp.offset = 15; |
||
671 | info->var.transp.length = 1; |
||
672 | break; |
||
673 | case 16: |
||
674 | info->var.red.offset = 11; |
||
675 | info->var.green.offset = 5; |
||
676 | info->var.blue.offset = 0; |
||
677 | info->var.red.length = 5; |
||
678 | info->var.green.length = 6; |
||
679 | info->var.blue.length = 5; |
||
680 | info->var.transp.offset = 0; |
||
681 | break; |
||
682 | case 24: |
||
683 | info->var.red.offset = 16; |
||
684 | info->var.green.offset = 8; |
||
685 | info->var.blue.offset = 0; |
||
686 | info->var.red.length = 8; |
||
687 | info->var.green.length = 8; |
||
688 | info->var.blue.length = 8; |
||
689 | info->var.transp.offset = 0; |
||
690 | info->var.transp.length = 0; |
||
691 | break; |
||
692 | case 32: |
||
693 | info->var.red.offset = 16; |
||
694 | info->var.green.offset = 8; |
||
695 | info->var.blue.offset = 0; |
||
696 | info->var.red.length = 8; |
||
697 | info->var.green.length = 8; |
||
698 | info->var.blue.length = 8; |
||
699 | info->var.transp.offset = 24; |
||
700 | info->var.transp.length = 8; |
||
701 | break; |
||
702 | default: |
||
703 | break; |
||
704 | } |
||
705 | |||
706 | info->var.xres = fb_width; |
||
707 | info->var.yres = fb_height; |
||
708 | } |
||
709 | EXPORT_SYMBOL(drm_fb_helper_fill_var); |
||
1963 | serge | 710 | |
711 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
||
712 | uint32_t maxX, |
||
713 | uint32_t maxY) |
||
714 | { |
||
715 | struct drm_connector *connector; |
||
716 | int count = 0; |
||
717 | int i; |
||
718 | |||
719 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
720 | connector = fb_helper->connector_info[i]->connector; |
||
721 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
||
722 | } |
||
723 | |||
724 | return count; |
||
725 | } |
||
726 | |||
727 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
||
728 | { |
||
729 | struct drm_display_mode *mode; |
||
730 | |||
731 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
||
732 | if (drm_mode_width(mode) > width || |
||
733 | drm_mode_height(mode) > height) |
||
734 | continue; |
||
735 | if (mode->type & DRM_MODE_TYPE_PREFERRED) |
||
736 | return mode; |
||
737 | } |
||
738 | return NULL; |
||
739 | } |
||
740 | |||
741 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
||
742 | { |
||
743 | struct drm_cmdline_mode *cmdline_mode; |
||
744 | cmdline_mode = &fb_connector->cmdline_mode; |
||
745 | return cmdline_mode->specified; |
||
746 | } |
||
747 | |||
748 | |||
749 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) |
||
750 | { |
||
751 | bool enable; |
||
752 | |||
3192 | Serge | 753 | if (strict) |
1963 | serge | 754 | enable = connector->status == connector_status_connected; |
3192 | Serge | 755 | else |
1963 | serge | 756 | enable = connector->status != connector_status_disconnected; |
3192 | Serge | 757 | |
1963 | serge | 758 | return enable; |
759 | } |
||
760 | |||
761 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
||
762 | bool *enabled) |
||
763 | { |
||
764 | bool any_enabled = false; |
||
765 | struct drm_connector *connector; |
||
766 | int i = 0; |
||
767 | |||
768 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
769 | connector = fb_helper->connector_info[i]->connector; |
||
770 | enabled[i] = drm_connector_enabled(connector, true); |
||
771 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, |
||
772 | enabled[i] ? "yes" : "no"); |
||
773 | any_enabled |= enabled[i]; |
||
774 | } |
||
775 | |||
776 | if (any_enabled) |
||
777 | return; |
||
778 | |||
779 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
780 | connector = fb_helper->connector_info[i]->connector; |
||
781 | enabled[i] = drm_connector_enabled(connector, false); |
||
782 | } |
||
783 | } |
||
784 | |||
785 | |||
786 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
||
787 | struct drm_display_mode **modes, |
||
788 | bool *enabled, int width, int height) |
||
789 | { |
||
790 | struct drm_fb_helper_connector *fb_helper_conn; |
||
791 | int i; |
||
792 | |||
793 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
794 | fb_helper_conn = fb_helper->connector_info[i]; |
||
795 | |||
796 | if (enabled[i] == false) |
||
797 | continue; |
||
798 | |||
799 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", |
||
800 | fb_helper_conn->connector->base.id); |
||
801 | |||
802 | /* got for command line mode first */ |
||
803 | // modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
||
804 | |||
805 | modes[i] = NULL; |
||
806 | |||
807 | if (!modes[i]) { |
||
808 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", |
||
809 | fb_helper_conn->connector->base.id); |
||
810 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); |
||
811 | } |
||
812 | /* No preferred modes, pick one off the list */ |
||
813 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
||
814 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) |
||
815 | break; |
||
816 | } |
||
817 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : |
||
818 | "none"); |
||
819 | } |
||
820 | return true; |
||
821 | } |
||
822 | |||
823 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
||
824 | struct drm_fb_helper_crtc **best_crtcs, |
||
825 | struct drm_display_mode **modes, |
||
826 | int n, int width, int height) |
||
827 | { |
||
828 | int c, o; |
||
829 | struct drm_device *dev = fb_helper->dev; |
||
830 | struct drm_connector *connector; |
||
831 | struct drm_connector_helper_funcs *connector_funcs; |
||
832 | struct drm_encoder *encoder; |
||
833 | struct drm_fb_helper_crtc *best_crtc; |
||
834 | int my_score, best_score, score; |
||
835 | struct drm_fb_helper_crtc **crtcs, *crtc; |
||
836 | struct drm_fb_helper_connector *fb_helper_conn; |
||
837 | |||
838 | if (n == fb_helper->connector_count) |
||
839 | return 0; |
||
840 | |||
841 | fb_helper_conn = fb_helper->connector_info[n]; |
||
842 | connector = fb_helper_conn->connector; |
||
843 | |||
844 | best_crtcs[n] = NULL; |
||
845 | best_crtc = NULL; |
||
846 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
||
847 | if (modes[n] == NULL) |
||
848 | return best_score; |
||
849 | |||
850 | crtcs = kzalloc(dev->mode_config.num_connector * |
||
851 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
||
852 | if (!crtcs) |
||
853 | return best_score; |
||
854 | |||
855 | my_score = 1; |
||
856 | if (connector->status == connector_status_connected) |
||
857 | my_score++; |
||
858 | if (drm_has_cmdline_mode(fb_helper_conn)) |
||
859 | my_score++; |
||
860 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
||
861 | my_score++; |
||
862 | |||
863 | connector_funcs = connector->helper_private; |
||
864 | encoder = connector_funcs->best_encoder(connector); |
||
865 | if (!encoder) |
||
866 | goto out; |
||
867 | |||
868 | /* select a crtc for this connector and then attempt to configure |
||
869 | remaining connectors */ |
||
870 | for (c = 0; c < fb_helper->crtc_count; c++) { |
||
871 | crtc = &fb_helper->crtc_info[c]; |
||
872 | |||
3192 | Serge | 873 | if ((encoder->possible_crtcs & (1 << c)) == 0) |
1963 | serge | 874 | continue; |
875 | |||
876 | for (o = 0; o < n; o++) |
||
877 | if (best_crtcs[o] == crtc) |
||
878 | break; |
||
879 | |||
880 | if (o < n) { |
||
881 | /* ignore cloning unless only a single crtc */ |
||
882 | if (fb_helper->crtc_count > 1) |
||
883 | continue; |
||
884 | |||
885 | if (!drm_mode_equal(modes[o], modes[n])) |
||
886 | continue; |
||
887 | } |
||
888 | |||
889 | crtcs[n] = crtc; |
||
890 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
||
891 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, |
||
892 | width, height); |
||
893 | if (score > best_score) { |
||
894 | best_crtc = crtc; |
||
895 | best_score = score; |
||
896 | memcpy(best_crtcs, crtcs, |
||
897 | dev->mode_config.num_connector * |
||
898 | sizeof(struct drm_fb_helper_crtc *)); |
||
899 | } |
||
900 | } |
||
901 | out: |
||
902 | kfree(crtcs); |
||
903 | return best_score; |
||
904 | } |
||
905 | |||
906 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
||
907 | { |
||
908 | struct drm_device *dev = fb_helper->dev; |
||
909 | struct drm_fb_helper_crtc **crtcs; |
||
910 | struct drm_display_mode **modes; |
||
911 | struct drm_mode_set *modeset; |
||
912 | bool *enabled; |
||
913 | int width, height; |
||
914 | int i, ret; |
||
915 | |||
916 | DRM_DEBUG_KMS("\n"); |
||
917 | |||
918 | width = dev->mode_config.max_width; |
||
919 | height = dev->mode_config.max_height; |
||
920 | |||
921 | crtcs = kcalloc(dev->mode_config.num_connector, |
||
922 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
||
923 | modes = kcalloc(dev->mode_config.num_connector, |
||
924 | sizeof(struct drm_display_mode *), GFP_KERNEL); |
||
925 | enabled = kcalloc(dev->mode_config.num_connector, |
||
926 | sizeof(bool), GFP_KERNEL); |
||
3192 | Serge | 927 | if (!crtcs || !modes || !enabled) { |
928 | DRM_ERROR("Memory allocation failed\n"); |
||
929 | goto out; |
||
930 | } |
||
1963 | serge | 931 | |
3192 | Serge | 932 | |
1963 | serge | 933 | drm_enable_connectors(fb_helper, enabled); |
934 | |||
935 | //ret = drm_target_cloned(fb_helper, modes, enabled, width, height); |
||
936 | |||
937 | ret = 0; |
||
938 | |||
939 | if (!ret) { |
||
940 | ret = drm_target_preferred(fb_helper, modes, enabled, width, height); |
||
941 | if (!ret) |
||
942 | DRM_ERROR("Unable to find initial modes\n"); |
||
943 | } |
||
944 | |||
945 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); |
||
946 | |||
947 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
||
948 | |||
949 | /* need to set the modesets up here for use later */ |
||
950 | /* fill out the connector<->crtc mappings into the modesets */ |
||
951 | for (i = 0; i < fb_helper->crtc_count; i++) { |
||
952 | modeset = &fb_helper->crtc_info[i].mode_set; |
||
953 | modeset->num_connectors = 0; |
||
954 | } |
||
955 | |||
956 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
957 | struct drm_display_mode *mode = modes[i]; |
||
958 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
||
959 | modeset = &fb_crtc->mode_set; |
||
960 | |||
961 | if (mode && fb_crtc) { |
||
962 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
||
963 | mode->name, fb_crtc->mode_set.crtc->base.id); |
||
964 | fb_crtc->desired_mode = mode; |
||
965 | if (modeset->mode) |
||
966 | drm_mode_destroy(dev, modeset->mode); |
||
967 | modeset->mode = drm_mode_duplicate(dev, |
||
968 | fb_crtc->desired_mode); |
||
969 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
||
970 | } |
||
971 | } |
||
972 | |||
3192 | Serge | 973 | out: |
1963 | serge | 974 | kfree(crtcs); |
975 | kfree(modes); |
||
976 | kfree(enabled); |
||
977 | } |
||
978 | |||
979 | /** |
||
980 | * drm_helper_initial_config - setup a sane initial connector configuration |
||
3192 | Serge | 981 | * @fb_helper: fb_helper device struct |
982 | * @bpp_sel: bpp value to use for the framebuffer configuration |
||
1963 | serge | 983 | * |
984 | * LOCKING: |
||
3192 | Serge | 985 | * Called at init time by the driver to set up the @fb_helper initial |
986 | * configuration, must take the mode config lock. |
||
1963 | serge | 987 | * |
3192 | Serge | 988 | * Scans the CRTCs and connectors and tries to put together an initial setup. |
1963 | serge | 989 | * At the moment, this is a cloned configuration across all heads with |
990 | * a new framebuffer object as the backing store. |
||
991 | * |
||
992 | * RETURNS: |
||
993 | * Zero if everything went ok, nonzero otherwise. |
||
994 | */ |
||
995 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
||
996 | { |
||
997 | struct drm_device *dev = fb_helper->dev; |
||
998 | int count = 0; |
||
3192 | Serge | 999 | bool ret; |
1963 | serge | 1000 | |
3192 | Serge | 1001 | ENTER(); |
1002 | |||
1963 | serge | 1003 | /* disable all the possible outputs/crtcs before entering KMS mode */ |
3031 | serge | 1004 | drm_helper_disable_unused_functions(fb_helper->dev); |
1963 | serge | 1005 | |
1006 | // drm_fb_helper_parse_command_line(fb_helper); |
||
1007 | |||
1008 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
||
1009 | dev->mode_config.max_width, |
||
1010 | dev->mode_config.max_height); |
||
1011 | /* |
||
1012 | * we shouldn't end up with no modes here. |
||
1013 | */ |
||
3192 | Serge | 1014 | if (count == 0) |
1015 | dev_info(fb_helper->dev->dev, "No connectors reported connected with modes\n"); |
||
1016 | |||
1017 | drm_setup_crtcs(fb_helper); |
||
1018 | |||
1019 | ret = drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
||
1020 | LEAVE(); |
||
1021 | } |
||
1022 | EXPORT_SYMBOL(drm_fb_helper_initial_config); |
||
1023 | |||
1024 | #if 0 |
||
1025 | /** |
||
1026 | * drm_fb_helper_hotplug_event - respond to a hotplug notification by |
||
1027 | * probing all the outputs attached to the fb |
||
1028 | * @fb_helper: the drm_fb_helper |
||
1029 | * |
||
1030 | * LOCKING: |
||
1031 | * Called at runtime, must take mode config lock. |
||
1032 | * |
||
1033 | * Scan the connectors attached to the fb_helper and try to put together a |
||
1034 | * setup after *notification of a change in output configuration. |
||
1035 | * |
||
1036 | * RETURNS: |
||
1037 | * 0 on success and a non-zero error code otherwise. |
||
1038 | */ |
||
1039 | int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) |
||
1040 | { |
||
1041 | struct drm_device *dev = fb_helper->dev; |
||
1042 | int count = 0; |
||
1043 | u32 max_width, max_height, bpp_sel; |
||
1044 | int bound = 0, crtcs_bound = 0; |
||
1045 | struct drm_crtc *crtc; |
||
1046 | |||
1047 | if (!fb_helper->fb) |
||
1048 | return 0; |
||
1049 | |||
1050 | mutex_lock(&dev->mode_config.mutex); |
||
1051 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
1052 | if (crtc->fb) |
||
1053 | crtcs_bound++; |
||
1054 | if (crtc->fb == fb_helper->fb) |
||
1055 | bound++; |
||
1963 | serge | 1056 | } |
3192 | Serge | 1057 | |
1058 | if (bound < crtcs_bound) { |
||
1059 | fb_helper->delayed_hotplug = true; |
||
1060 | mutex_unlock(&dev->mode_config.mutex); |
||
1061 | return 0; |
||
1062 | } |
||
1063 | DRM_DEBUG_KMS("\n"); |
||
1064 | |||
1065 | max_width = fb_helper->fb->width; |
||
1066 | max_height = fb_helper->fb->height; |
||
1067 | bpp_sel = fb_helper->fb->bits_per_pixel; |
||
1068 | |||
1069 | count = drm_fb_helper_probe_connector_modes(fb_helper, max_width, |
||
1070 | max_height); |
||
1963 | serge | 1071 | drm_setup_crtcs(fb_helper); |
3192 | Serge | 1072 | mutex_unlock(&dev->mode_config.mutex); |
1963 | serge | 1073 | |
1074 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
||
1075 | } |
||
3192 | Serge | 1076 | EXPORT_SYMBOL(drm_fb_helper_hotplug_event); |
1077 | #endif>>>->>>><>>>>>>>>>>>>>>>>>>>><>=><=>><>><>><>><>>>>>>>> |
||
1078 |