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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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30 | //#include |
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31 | #include |
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32 | #include "drmP.h" |
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33 | #include "drm_crtc.h" |
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34 | #include "drm_fb_helper.h" |
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35 | #include "drm_crtc_helper.h" |
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36 | |||
37 | //MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
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38 | //MODULE_DESCRIPTION("DRM KMS helper"); |
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39 | //MODULE_LICENSE("GPL and additional rights"); |
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40 | |||
41 | static LIST_HEAD(kernel_fb_helper_list); |
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42 | |||
43 | bool drm_fb_helper_force_kernel_mode(void) |
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44 | { |
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45 | int i = 0; |
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46 | bool ret, error = false; |
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47 | struct drm_fb_helper *helper; |
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48 | |||
49 | if (list_empty(&kernel_fb_helper_list)) |
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50 | return false; |
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51 | |||
52 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { |
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53 | for (i = 0; i < helper->crtc_count; i++) { |
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54 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; |
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55 | ret = drm_crtc_helper_set_config(mode_set); |
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56 | if (ret) |
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57 | error = true; |
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58 | } |
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59 | } |
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60 | return error; |
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61 | } |
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62 | |||
63 | /** |
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64 | * drm_fb_helper_restore - restore the framebuffer console (kernel) config |
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65 | * |
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66 | * Restore's the kernel's fbcon mode, used for lastclose & panic paths. |
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67 | */ |
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68 | void drm_fb_helper_restore(void) |
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69 | { |
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70 | bool ret; |
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71 | ret = drm_fb_helper_force_kernel_mode(); |
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72 | if (ret == true) |
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73 | DRM_ERROR("Failed to restore crtc configuration\n"); |
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74 | } |
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75 | EXPORT_SYMBOL(drm_fb_helper_restore); |
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76 | |||
77 | |||
78 | static void drm_fb_helper_on(struct fb_info *info) |
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79 | { |
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80 | struct drm_fb_helper *fb_helper = info->par; |
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81 | struct drm_device *dev = fb_helper->dev; |
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82 | struct drm_crtc *crtc; |
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83 | struct drm_encoder *encoder; |
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84 | int i; |
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85 | |||
86 | /* |
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87 | * For each CRTC in this fb, turn the crtc on then, |
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88 | * find all associated encoders and turn them on. |
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89 | */ |
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90 | for (i = 0; i < fb_helper->crtc_count; i++) { |
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91 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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92 | struct drm_crtc_helper_funcs *crtc_funcs = |
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93 | crtc->helper_private; |
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94 | |||
95 | /* Only mess with CRTCs in this fb */ |
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96 | if (crtc->base.id != fb_helper->crtc_info[i].crtc_id || |
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97 | !crtc->enabled) |
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98 | continue; |
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99 | |||
100 | mutex_lock(&dev->mode_config.mutex); |
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101 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); |
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102 | mutex_unlock(&dev->mode_config.mutex); |
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103 | |||
104 | /* Found a CRTC on this fb, now find encoders */ |
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105 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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106 | if (encoder->crtc == crtc) { |
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107 | struct drm_encoder_helper_funcs *encoder_funcs; |
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108 | |||
109 | encoder_funcs = encoder->helper_private; |
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110 | mutex_lock(&dev->mode_config.mutex); |
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111 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); |
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112 | mutex_unlock(&dev->mode_config.mutex); |
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113 | } |
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114 | } |
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115 | } |
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116 | } |
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117 | } |
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118 | |||
119 | static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) |
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120 | { |
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121 | struct drm_fb_helper *fb_helper = info->par; |
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122 | struct drm_device *dev = fb_helper->dev; |
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123 | struct drm_crtc *crtc; |
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124 | struct drm_encoder *encoder; |
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125 | int i; |
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126 | |||
127 | /* |
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128 | * For each CRTC in this fb, find all associated encoders |
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129 | * and turn them off, then turn off the CRTC. |
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130 | */ |
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131 | for (i = 0; i < fb_helper->crtc_count; i++) { |
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132 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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133 | struct drm_crtc_helper_funcs *crtc_funcs = |
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134 | crtc->helper_private; |
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135 | |||
136 | /* Only mess with CRTCs in this fb */ |
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137 | if (crtc->base.id != fb_helper->crtc_info[i].crtc_id || |
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138 | !crtc->enabled) |
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139 | continue; |
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140 | |||
141 | /* Found a CRTC on this fb, now find encoders */ |
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142 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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143 | if (encoder->crtc == crtc) { |
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144 | struct drm_encoder_helper_funcs *encoder_funcs; |
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145 | |||
146 | encoder_funcs = encoder->helper_private; |
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147 | mutex_lock(&dev->mode_config.mutex); |
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148 | encoder_funcs->dpms(encoder, dpms_mode); |
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149 | mutex_unlock(&dev->mode_config.mutex); |
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150 | } |
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151 | } |
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152 | if (dpms_mode == DRM_MODE_DPMS_OFF) { |
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153 | mutex_lock(&dev->mode_config.mutex); |
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154 | crtc_funcs->dpms(crtc, dpms_mode); |
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155 | mutex_unlock(&dev->mode_config.mutex); |
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156 | } |
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157 | } |
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158 | } |
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159 | } |
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160 | |||
161 | int drm_fb_helper_blank(int blank, struct fb_info *info) |
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162 | { |
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163 | switch (blank) { |
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164 | case FB_BLANK_UNBLANK: |
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165 | drm_fb_helper_on(info); |
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166 | break; |
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167 | case FB_BLANK_NORMAL: |
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168 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
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169 | break; |
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170 | case FB_BLANK_HSYNC_SUSPEND: |
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171 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
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172 | break; |
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173 | case FB_BLANK_VSYNC_SUSPEND: |
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174 | drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); |
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175 | break; |
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176 | case FB_BLANK_POWERDOWN: |
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177 | drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); |
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178 | break; |
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179 | } |
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180 | return 0; |
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181 | } |
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182 | EXPORT_SYMBOL(drm_fb_helper_blank); |
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183 | |||
184 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) |
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185 | { |
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186 | int i; |
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187 | |||
188 | for (i = 0; i < helper->crtc_count; i++) |
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189 | kfree(helper->crtc_info[i].mode_set.connectors); |
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190 | kfree(helper->crtc_info); |
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191 | } |
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192 | |||
193 | int drm_fb_helper_init_crtc_count(struct drm_fb_helper *helper, int crtc_count, int max_conn_count) |
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194 | { |
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195 | struct drm_device *dev = helper->dev; |
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196 | struct drm_crtc *crtc; |
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197 | int ret = 0; |
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198 | int i; |
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199 | |||
200 | helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); |
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201 | if (!helper->crtc_info) |
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202 | return -ENOMEM; |
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203 | |||
204 | helper->crtc_count = crtc_count; |
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205 | |||
206 | for (i = 0; i < crtc_count; i++) { |
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207 | helper->crtc_info[i].mode_set.connectors = |
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208 | kcalloc(max_conn_count, |
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209 | sizeof(struct drm_connector *), |
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210 | GFP_KERNEL); |
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211 | |||
212 | if (!helper->crtc_info[i].mode_set.connectors) { |
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213 | ret = -ENOMEM; |
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214 | goto out_free; |
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215 | } |
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216 | helper->crtc_info[i].mode_set.num_connectors = 0; |
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217 | } |
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218 | |||
219 | i = 0; |
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220 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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221 | helper->crtc_info[i].crtc_id = crtc->base.id; |
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222 | helper->crtc_info[i].mode_set.crtc = crtc; |
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223 | i++; |
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224 | } |
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225 | helper->conn_limit = max_conn_count; |
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226 | return 0; |
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227 | out_free: |
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228 | drm_fb_helper_crtc_free(helper); |
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229 | return -ENOMEM; |
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230 | } |
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231 | EXPORT_SYMBOL(drm_fb_helper_init_crtc_count); |
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232 | |||
233 | int drm_fb_helper_setcolreg(unsigned regno, |
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234 | unsigned red, |
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235 | unsigned green, |
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236 | unsigned blue, |
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237 | unsigned transp, |
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238 | struct fb_info *info) |
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239 | { |
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240 | struct drm_fb_helper *fb_helper = info->par; |
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241 | struct drm_device *dev = fb_helper->dev; |
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242 | struct drm_crtc *crtc; |
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243 | int i; |
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244 | |||
245 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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246 | struct drm_framebuffer *fb = fb_helper->fb; |
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247 | |||
248 | for (i = 0; i < fb_helper->crtc_count; i++) { |
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249 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) |
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250 | break; |
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251 | } |
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252 | if (i == fb_helper->crtc_count) |
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253 | continue; |
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254 | |||
255 | if (regno > 255) |
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256 | return 1; |
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257 | |||
258 | if (fb->depth == 8) { |
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259 | fb_helper->funcs->gamma_set(crtc, red, green, blue, regno); |
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260 | return 0; |
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261 | } |
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262 | |||
263 | if (regno < 16) { |
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264 | switch (fb->depth) { |
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265 | case 15: |
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266 | fb->pseudo_palette[regno] = ((red & 0xf800) >> 1) | |
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267 | ((green & 0xf800) >> 6) | |
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268 | ((blue & 0xf800) >> 11); |
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269 | break; |
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270 | case 16: |
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271 | fb->pseudo_palette[regno] = (red & 0xf800) | |
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272 | ((green & 0xfc00) >> 5) | |
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273 | ((blue & 0xf800) >> 11); |
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274 | break; |
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275 | case 24: |
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276 | case 32: |
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277 | fb->pseudo_palette[regno] = |
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278 | (((red >> 8) & 0xff) << info->var.red.offset) | |
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279 | (((green >> 8) & 0xff) << info->var.green.offset) | |
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280 | (((blue >> 8) & 0xff) << info->var.blue.offset); |
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281 | break; |
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282 | } |
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283 | } |
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284 | } |
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285 | return 0; |
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286 | } |
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287 | EXPORT_SYMBOL(drm_fb_helper_setcolreg); |
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288 | |||
289 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
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290 | struct fb_info *info) |
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291 | { |
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292 | struct drm_fb_helper *fb_helper = info->par; |
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293 | struct drm_framebuffer *fb = fb_helper->fb; |
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294 | int depth; |
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295 | |||
296 | if (var->pixclock == -1 || !var->pixclock) |
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297 | return -EINVAL; |
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298 | |||
299 | /* Need to resize the fb object !!! */ |
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300 | if (var->xres > fb->width || var->yres > fb->height) { |
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301 | DRM_ERROR("Requested width/height is greater than current fb " |
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302 | "object %dx%d > %dx%d\n", var->xres, var->yres, |
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303 | fb->width, fb->height); |
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304 | DRM_ERROR("Need resizing code.\n"); |
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305 | return -EINVAL; |
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306 | } |
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307 | |||
308 | switch (var->bits_per_pixel) { |
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309 | case 16: |
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310 | depth = (var->green.length == 6) ? 16 : 15; |
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311 | break; |
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312 | case 32: |
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313 | depth = (var->transp.length > 0) ? 32 : 24; |
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314 | break; |
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315 | default: |
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316 | depth = var->bits_per_pixel; |
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317 | break; |
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318 | } |
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319 | |||
320 | switch (depth) { |
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321 | case 8: |
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322 | var->red.offset = 0; |
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323 | var->green.offset = 0; |
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324 | var->blue.offset = 0; |
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325 | var->red.length = 8; |
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326 | var->green.length = 8; |
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327 | var->blue.length = 8; |
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328 | var->transp.length = 0; |
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329 | var->transp.offset = 0; |
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330 | break; |
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331 | case 15: |
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332 | var->red.offset = 10; |
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333 | var->green.offset = 5; |
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334 | var->blue.offset = 0; |
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335 | var->red.length = 5; |
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336 | var->green.length = 5; |
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337 | var->blue.length = 5; |
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338 | var->transp.length = 1; |
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339 | var->transp.offset = 15; |
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340 | break; |
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341 | case 16: |
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342 | var->red.offset = 11; |
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343 | var->green.offset = 5; |
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344 | var->blue.offset = 0; |
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345 | var->red.length = 5; |
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346 | var->green.length = 6; |
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347 | var->blue.length = 5; |
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348 | var->transp.length = 0; |
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349 | var->transp.offset = 0; |
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350 | break; |
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351 | case 24: |
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352 | var->red.offset = 16; |
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353 | var->green.offset = 8; |
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354 | var->blue.offset = 0; |
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355 | var->red.length = 8; |
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356 | var->green.length = 8; |
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357 | var->blue.length = 8; |
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358 | var->transp.length = 0; |
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359 | var->transp.offset = 0; |
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360 | break; |
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361 | case 32: |
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362 | var->red.offset = 16; |
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363 | var->green.offset = 8; |
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364 | var->blue.offset = 0; |
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365 | var->red.length = 8; |
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366 | var->green.length = 8; |
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367 | var->blue.length = 8; |
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368 | var->transp.length = 8; |
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369 | var->transp.offset = 24; |
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370 | break; |
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371 | default: |
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372 | return -EINVAL; |
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373 | } |
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374 | return 0; |
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375 | } |
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376 | EXPORT_SYMBOL(drm_fb_helper_check_var); |
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377 | |||
378 | /* this will let fbcon do the mode init */ |
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379 | int drm_fb_helper_set_par(struct fb_info *info) |
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380 | { |
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381 | struct drm_fb_helper *fb_helper = info->par; |
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382 | struct drm_device *dev = fb_helper->dev; |
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383 | struct fb_var_screeninfo *var = &info->var; |
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384 | struct drm_crtc *crtc; |
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385 | int ret; |
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386 | int i; |
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387 | |||
388 | if (var->pixclock != -1) { |
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389 | DRM_ERROR("PIXEL CLCOK SET\n"); |
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390 | return -EINVAL; |
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391 | } |
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392 | |||
393 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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394 | |||
395 | for (i = 0; i < fb_helper->crtc_count; i++) { |
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396 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) |
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397 | break; |
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398 | } |
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399 | if (i == fb_helper->crtc_count) |
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400 | continue; |
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401 | |||
402 | if (crtc->fb == fb_helper->crtc_info[i].mode_set.fb) { |
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403 | mutex_lock(&dev->mode_config.mutex); |
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404 | ret = crtc->funcs->set_config(&fb_helper->crtc_info->mode_set); |
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405 | mutex_unlock(&dev->mode_config.mutex); |
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406 | if (ret) |
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407 | return ret; |
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408 | } |
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409 | } |
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410 | return 0; |
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411 | } |
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412 | EXPORT_SYMBOL(drm_fb_helper_set_par); |
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413 | |||
414 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, |
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415 | struct fb_info *info) |
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416 | { |
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417 | struct drm_fb_helper *fb_helper = info->par; |
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418 | struct drm_device *dev = fb_helper->dev; |
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419 | struct drm_mode_set *modeset; |
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420 | struct drm_crtc *crtc; |
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421 | int ret = 0; |
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422 | int i; |
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423 | |||
424 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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425 | for (i = 0; i < fb_helper->crtc_count; i++) { |
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426 | if (crtc->base.id == fb_helper->crtc_info[i].crtc_id) |
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427 | break; |
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428 | } |
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429 | |||
430 | if (i == fb_helper->crtc_count) |
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431 | continue; |
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432 | |||
433 | modeset = &fb_helper->crtc_info[i].mode_set; |
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434 | |||
435 | modeset->x = var->xoffset; |
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436 | modeset->y = var->yoffset; |
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437 | |||
438 | if (modeset->num_connectors) { |
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439 | mutex_lock(&dev->mode_config.mutex); |
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440 | ret = crtc->funcs->set_config(modeset); |
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441 | mutex_unlock(&dev->mode_config.mutex); |
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442 | if (!ret) { |
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443 | info->var.xoffset = var->xoffset; |
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444 | info->var.yoffset = var->yoffset; |
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445 | } |
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446 | } |
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447 | } |
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448 | return ret; |
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449 | } |
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450 | EXPORT_SYMBOL(drm_fb_helper_pan_display); |
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451 | |||
452 | int drm_fb_helper_single_fb_probe(struct drm_device *dev, |
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453 | int (*fb_create)(struct drm_device *dev, |
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454 | uint32_t fb_width, |
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455 | uint32_t fb_height, |
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456 | uint32_t surface_width, |
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457 | uint32_t surface_height, |
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458 | struct drm_framebuffer **fb_ptr)) |
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459 | { |
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460 | struct drm_crtc *crtc; |
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461 | struct drm_connector *connector; |
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462 | unsigned int fb_width = (unsigned)-1, fb_height = (unsigned)-1; |
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463 | unsigned int surface_width = 0, surface_height = 0; |
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464 | int new_fb = 0; |
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465 | int crtc_count = 0; |
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466 | int ret, i, conn_count = 0; |
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467 | struct fb_info *info; |
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468 | struct drm_framebuffer *fb; |
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469 | struct drm_mode_set *modeset = NULL; |
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470 | struct drm_fb_helper *fb_helper; |
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471 | |||
472 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
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473 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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474 | if (drm_helper_crtc_in_use(crtc)) { |
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475 | if (crtc->desired_mode) { |
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476 | if (crtc->desired_mode->hdisplay < fb_width) |
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477 | fb_width = crtc->desired_mode->hdisplay; |
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478 | |||
479 | if (crtc->desired_mode->vdisplay < fb_height) |
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480 | fb_height = crtc->desired_mode->vdisplay; |
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481 | |||
482 | if (crtc->desired_mode->hdisplay > surface_width) |
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483 | surface_width = crtc->desired_mode->hdisplay; |
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484 | |||
485 | if (crtc->desired_mode->vdisplay > surface_height) |
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486 | surface_height = crtc->desired_mode->vdisplay; |
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487 | } |
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488 | crtc_count++; |
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489 | } |
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490 | } |
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491 | |||
492 | if (crtc_count == 0 || fb_width == -1 || fb_height == -1) { |
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493 | /* hmm everyone went away - assume VGA cable just fell out |
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494 | and will come back later. */ |
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495 | return 0; |
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496 | } |
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497 | |||
498 | /* do we have an fb already? */ |
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499 | if (list_empty(&dev->mode_config.fb_kernel_list)) { |
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500 | ret = (*fb_create)(dev, fb_width, fb_height, surface_width, |
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501 | surface_height, &fb); |
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502 | if (ret) |
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503 | return -EINVAL; |
||
504 | new_fb = 1; |
||
505 | } else { |
||
506 | fb = list_first_entry(&dev->mode_config.fb_kernel_list, |
||
507 | struct drm_framebuffer, filp_head); |
||
508 | |||
509 | /* if someone hotplugs something bigger than we have already allocated, we are pwned. |
||
510 | As really we can't resize an fbdev that is in the wild currently due to fbdev |
||
511 | not really being designed for the lower layers moving stuff around under it. |
||
512 | - so in the grand style of things - punt. */ |
||
513 | if ((fb->width < surface_width) || |
||
514 | (fb->height < surface_height)) { |
||
515 | DRM_ERROR("Framebuffer not large enough to scale console onto.\n"); |
||
516 | return -EINVAL; |
||
517 | } |
||
518 | } |
||
519 | |||
520 | info = fb->fbdev; |
||
521 | fb_helper = info->par; |
||
522 | |||
523 | crtc_count = 0; |
||
524 | /* okay we need to setup new connector sets in the crtcs */ |
||
525 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
526 | modeset = &fb_helper->crtc_info[crtc_count].mode_set; |
||
527 | modeset->fb = fb; |
||
528 | conn_count = 0; |
||
529 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
530 | if (connector->encoder) |
||
531 | if (connector->encoder->crtc == modeset->crtc) { |
||
532 | modeset->connectors[conn_count] = connector; |
||
533 | conn_count++; |
||
534 | if (conn_count > fb_helper->conn_limit) |
||
535 | BUG(); |
||
536 | } |
||
537 | } |
||
538 | |||
539 | for (i = conn_count; i < fb_helper->conn_limit; i++) |
||
540 | modeset->connectors[i] = NULL; |
||
541 | |||
542 | modeset->crtc = crtc; |
||
543 | crtc_count++; |
||
544 | |||
545 | modeset->num_connectors = conn_count; |
||
546 | if (modeset->crtc->desired_mode) { |
||
547 | if (modeset->mode) |
||
548 | drm_mode_destroy(dev, modeset->mode); |
||
549 | modeset->mode = drm_mode_duplicate(dev, |
||
550 | modeset->crtc->desired_mode); |
||
551 | } |
||
552 | } |
||
553 | fb_helper->crtc_count = crtc_count; |
||
554 | fb_helper->fb = fb; |
||
555 | |||
556 | if (new_fb) { |
||
557 | info->var.pixclock = -1; |
||
558 | // if (register_framebuffer(info) < 0) |
||
559 | // return -EINVAL; |
||
560 | } else { |
||
561 | drm_fb_helper_set_par(info); |
||
562 | } |
||
563 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, |
||
564 | info->fix.id); |
||
565 | |||
566 | /* Switch back to kernel console on panic */ |
||
567 | /* multi card linked list maybe */ |
||
568 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); |
||
569 | return 0; |
||
570 | } |
||
571 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); |
||
572 | |||
573 | void drm_fb_helper_free(struct drm_fb_helper *helper) |
||
574 | { |
||
575 | list_del(&helper->kernel_fb_list); |
||
576 | drm_fb_helper_crtc_free(helper); |
||
577 | } |
||
578 | EXPORT_SYMBOL(drm_fb_helper_free); |
||
579 | |||
580 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch) |
||
581 | { |
||
582 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
||
583 | info->fix.visual = FB_VISUAL_TRUECOLOR; |
||
584 | info->fix.type_aux = 0; |
||
585 | info->fix.xpanstep = 1; /* doing it in hw */ |
||
586 | info->fix.ypanstep = 1; /* doing it in hw */ |
||
587 | info->fix.ywrapstep = 0; |
||
588 | info->fix.accel = FB_ACCEL_NONE; |
||
589 | info->fix.type_aux = 0; |
||
590 | |||
591 | info->fix.line_length = pitch; |
||
592 | return; |
||
593 | } |
||
594 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); |
||
595 | |||
596 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_framebuffer *fb, |
||
597 | uint32_t fb_width, uint32_t fb_height) |
||
598 | { |
||
599 | info->pseudo_palette = fb->pseudo_palette; |
||
600 | info->var.xres_virtual = fb->width; |
||
601 | info->var.yres_virtual = fb->height; |
||
602 | info->var.bits_per_pixel = fb->bits_per_pixel; |
||
603 | info->var.xoffset = 0; |
||
604 | info->var.yoffset = 0; |
||
605 | info->var.activate = FB_ACTIVATE_NOW; |
||
606 | info->var.height = -1; |
||
607 | info->var.width = -1; |
||
608 | |||
609 | switch (fb->depth) { |
||
610 | case 8: |
||
611 | info->var.red.offset = 0; |
||
612 | info->var.green.offset = 0; |
||
613 | info->var.blue.offset = 0; |
||
614 | info->var.red.length = 8; /* 8bit DAC */ |
||
615 | info->var.green.length = 8; |
||
616 | info->var.blue.length = 8; |
||
617 | info->var.transp.offset = 0; |
||
618 | info->var.transp.length = 0; |
||
619 | break; |
||
620 | case 15: |
||
621 | info->var.red.offset = 10; |
||
622 | info->var.green.offset = 5; |
||
623 | info->var.blue.offset = 0; |
||
624 | info->var.red.length = 5; |
||
625 | info->var.green.length = 5; |
||
626 | info->var.blue.length = 5; |
||
627 | info->var.transp.offset = 15; |
||
628 | info->var.transp.length = 1; |
||
629 | break; |
||
630 | case 16: |
||
631 | info->var.red.offset = 11; |
||
632 | info->var.green.offset = 5; |
||
633 | info->var.blue.offset = 0; |
||
634 | info->var.red.length = 5; |
||
635 | info->var.green.length = 6; |
||
636 | info->var.blue.length = 5; |
||
637 | info->var.transp.offset = 0; |
||
638 | break; |
||
639 | case 24: |
||
640 | info->var.red.offset = 16; |
||
641 | info->var.green.offset = 8; |
||
642 | info->var.blue.offset = 0; |
||
643 | info->var.red.length = 8; |
||
644 | info->var.green.length = 8; |
||
645 | info->var.blue.length = 8; |
||
646 | info->var.transp.offset = 0; |
||
647 | info->var.transp.length = 0; |
||
648 | break; |
||
649 | case 32: |
||
650 | info->var.red.offset = 16; |
||
651 | info->var.green.offset = 8; |
||
652 | info->var.blue.offset = 0; |
||
653 | info->var.red.length = 8; |
||
654 | info->var.green.length = 8; |
||
655 | info->var.blue.length = 8; |
||
656 | info->var.transp.offset = 24; |
||
657 | info->var.transp.length = 8; |
||
658 | break; |
||
659 | default: |
||
660 | break; |
||
661 | } |
||
662 | |||
663 | info->var.xres = fb_width; |
||
664 | info->var.yres = fb_height; |
||
665 | } |
||
666 | EXPORT_SYMBOL(drm_fb_helper_fill_var);>>>>>>>>><>><>><>>>>>>>> |