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Rev | Author | Line No. | Line |
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1179 | serge | 1 | /* |
2 | * Copyright (c) 2006-2009 Red Hat Inc. |
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3 | * Copyright (c) 2006-2008 Intel Corporation |
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4 | * Copyright (c) 2007 Dave Airlie |
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5 | * |
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6 | * DRM framebuffer helper functions |
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7 | * |
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8 | * Permission to use, copy, modify, distribute, and sell this software and its |
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9 | * documentation for any purpose is hereby granted without fee, provided that |
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10 | * the above copyright notice appear in all copies and that both that copyright |
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11 | * notice and this permission notice appear in supporting documentation, and |
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12 | * that the name of the copyright holders not be used in advertising or |
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13 | * publicity pertaining to distribution of the software without specific, |
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14 | * written prior permission. The copyright holders make no representations |
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15 | * about the suitability of this software for any purpose. It is provided "as |
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16 | * is" without express or implied warranty. |
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17 | * |
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18 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
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19 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
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20 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
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21 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
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22 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
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23 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
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24 | * OF THIS SOFTWARE. |
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25 | * |
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26 | * Authors: |
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27 | * Dave Airlie |
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28 | * Jesse Barnes |
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29 | */ |
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1430 | serge | 30 | #include |
1963 | serge | 31 | #include |
32 | #include |
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1179 | serge | 33 | #include |
34 | #include "drmP.h" |
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35 | #include "drm_crtc.h" |
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36 | #include "drm_fb_helper.h" |
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37 | #include "drm_crtc_helper.h" |
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38 | |||
1430 | serge | 39 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
40 | MODULE_DESCRIPTION("DRM KMS helper"); |
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41 | MODULE_LICENSE("GPL and additional rights"); |
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1179 | serge | 42 | |
43 | static LIST_HEAD(kernel_fb_helper_list); |
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44 | |||
1963 | serge | 45 | /* simple single crtc case helper function */ |
46 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) |
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1221 | serge | 47 | { |
1963 | serge | 48 | struct drm_device *dev = fb_helper->dev; |
49 | struct drm_connector *connector; |
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50 | int i; |
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1221 | serge | 51 | |
1963 | serge | 52 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
53 | struct drm_fb_helper_connector *fb_helper_connector; |
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54 | |||
55 | fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); |
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56 | if (!fb_helper_connector) |
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57 | goto fail; |
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58 | |||
59 | fb_helper_connector->connector = connector; |
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60 | fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; |
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61 | } |
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1221 | serge | 62 | return 0; |
1963 | serge | 63 | fail: |
64 | for (i = 0; i < fb_helper->connector_count; i++) { |
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65 | kfree(fb_helper->connector_info[i]); |
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66 | fb_helper->connector_info[i] = NULL; |
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67 | } |
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68 | fb_helper->connector_count = 0; |
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69 | return -ENOMEM; |
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1221 | serge | 70 | } |
1963 | serge | 71 | EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors); |
1221 | serge | 72 | |
1963 | serge | 73 | static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) |
1179 | serge | 74 | { |
1963 | serge | 75 | uint16_t *r_base, *g_base, *b_base; |
76 | int i; |
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1179 | serge | 77 | |
1963 | serge | 78 | r_base = crtc->gamma_store; |
79 | g_base = r_base + crtc->gamma_size; |
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80 | b_base = g_base + crtc->gamma_size; |
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1179 | serge | 81 | |
1963 | serge | 82 | for (i = 0; i < crtc->gamma_size; i++) |
83 | helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i); |
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1179 | serge | 84 | } |
85 | |||
1963 | serge | 86 | static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) |
1179 | serge | 87 | { |
1963 | serge | 88 | uint16_t *r_base, *g_base, *b_base; |
89 | |||
90 | r_base = crtc->gamma_store; |
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91 | g_base = r_base + crtc->gamma_size; |
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92 | b_base = g_base + crtc->gamma_size; |
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93 | |||
94 | crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); |
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1179 | serge | 95 | } |
96 | |||
97 | |||
98 | static void drm_fb_helper_on(struct fb_info *info) |
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99 | { |
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100 | struct drm_fb_helper *fb_helper = info->par; |
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101 | struct drm_device *dev = fb_helper->dev; |
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102 | struct drm_crtc *crtc; |
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1963 | serge | 103 | struct drm_crtc_helper_funcs *crtc_funcs; |
104 | struct drm_connector *connector; |
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1179 | serge | 105 | struct drm_encoder *encoder; |
1963 | serge | 106 | int i, j; |
1179 | serge | 107 | |
108 | /* |
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109 | * For each CRTC in this fb, turn the crtc on then, |
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110 | * find all associated encoders and turn them on. |
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111 | */ |
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1963 | serge | 112 | mutex_lock(&dev->mode_config.mutex); |
1179 | serge | 113 | for (i = 0; i < fb_helper->crtc_count; i++) { |
1963 | serge | 114 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
115 | crtc_funcs = crtc->helper_private; |
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1179 | serge | 116 | |
1963 | serge | 117 | if (!crtc->enabled) |
1179 | serge | 118 | continue; |
119 | |||
120 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); |
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121 | |||
1963 | serge | 122 | /* Walk the connectors & encoders on this fb turning them on */ |
123 | for (j = 0; j < fb_helper->connector_count; j++) { |
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124 | connector = fb_helper->connector_info[j]->connector; |
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125 | connector->dpms = DRM_MODE_DPMS_ON; |
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126 | drm_connector_property_set_value(connector, |
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127 | dev->mode_config.dpms_property, |
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128 | DRM_MODE_DPMS_ON); |
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129 | } |
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1179 | serge | 130 | /* Found a CRTC on this fb, now find encoders */ |
131 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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132 | if (encoder->crtc == crtc) { |
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133 | struct drm_encoder_helper_funcs *encoder_funcs; |
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134 | |||
135 | encoder_funcs = encoder->helper_private; |
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136 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); |
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137 | } |
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138 | } |
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139 | } |
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1963 | serge | 140 | mutex_unlock(&dev->mode_config.mutex); |
1179 | serge | 141 | } |
142 | |||
143 | static void drm_fb_helper_off(struct fb_info *info, int dpms_mode) |
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144 | { |
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145 | struct drm_fb_helper *fb_helper = info->par; |
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146 | struct drm_device *dev = fb_helper->dev; |
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147 | struct drm_crtc *crtc; |
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1963 | serge | 148 | struct drm_crtc_helper_funcs *crtc_funcs; |
149 | struct drm_connector *connector; |
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1179 | serge | 150 | struct drm_encoder *encoder; |
1963 | serge | 151 | int i, j; |
1179 | serge | 152 | |
153 | /* |
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154 | * For each CRTC in this fb, find all associated encoders |
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155 | * and turn them off, then turn off the CRTC. |
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156 | */ |
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1963 | serge | 157 | mutex_lock(&dev->mode_config.mutex); |
1179 | serge | 158 | for (i = 0; i < fb_helper->crtc_count; i++) { |
1963 | serge | 159 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
160 | crtc_funcs = crtc->helper_private; |
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1179 | serge | 161 | |
1963 | serge | 162 | if (!crtc->enabled) |
1179 | serge | 163 | continue; |
164 | |||
1963 | serge | 165 | /* Walk the connectors on this fb and mark them off */ |
166 | for (j = 0; j < fb_helper->connector_count; j++) { |
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167 | connector = fb_helper->connector_info[j]->connector; |
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168 | connector->dpms = dpms_mode; |
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169 | drm_connector_property_set_value(connector, |
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170 | dev->mode_config.dpms_property, |
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171 | dpms_mode); |
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172 | } |
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1179 | serge | 173 | /* Found a CRTC on this fb, now find encoders */ |
174 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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175 | if (encoder->crtc == crtc) { |
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176 | struct drm_encoder_helper_funcs *encoder_funcs; |
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177 | |||
178 | encoder_funcs = encoder->helper_private; |
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179 | encoder_funcs->dpms(encoder, dpms_mode); |
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180 | } |
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181 | } |
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1321 | serge | 182 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); |
1963 | serge | 183 | } |
1179 | serge | 184 | mutex_unlock(&dev->mode_config.mutex); |
185 | } |
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186 | |||
187 | int drm_fb_helper_blank(int blank, struct fb_info *info) |
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188 | { |
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189 | switch (blank) { |
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1321 | serge | 190 | /* Display: On; HSync: On, VSync: On */ |
1179 | serge | 191 | case FB_BLANK_UNBLANK: |
192 | drm_fb_helper_on(info); |
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193 | break; |
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1321 | serge | 194 | /* Display: Off; HSync: On, VSync: On */ |
1179 | serge | 195 | case FB_BLANK_NORMAL: |
1404 | serge | 196 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
1179 | serge | 197 | break; |
1321 | serge | 198 | /* Display: Off; HSync: Off, VSync: On */ |
1179 | serge | 199 | case FB_BLANK_HSYNC_SUSPEND: |
200 | drm_fb_helper_off(info, DRM_MODE_DPMS_STANDBY); |
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201 | break; |
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1321 | serge | 202 | /* Display: Off; HSync: On, VSync: Off */ |
1179 | serge | 203 | case FB_BLANK_VSYNC_SUSPEND: |
204 | drm_fb_helper_off(info, DRM_MODE_DPMS_SUSPEND); |
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205 | break; |
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1321 | serge | 206 | /* Display: Off; HSync: Off, VSync: Off */ |
1179 | serge | 207 | case FB_BLANK_POWERDOWN: |
208 | drm_fb_helper_off(info, DRM_MODE_DPMS_OFF); |
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209 | break; |
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210 | } |
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211 | return 0; |
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212 | } |
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213 | EXPORT_SYMBOL(drm_fb_helper_blank); |
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214 | |||
215 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) |
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216 | { |
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217 | int i; |
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218 | |||
1963 | serge | 219 | for (i = 0; i < helper->connector_count; i++) |
220 | kfree(helper->connector_info[i]); |
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221 | kfree(helper->connector_info); |
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1179 | serge | 222 | for (i = 0; i < helper->crtc_count; i++) |
223 | kfree(helper->crtc_info[i].mode_set.connectors); |
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224 | kfree(helper->crtc_info); |
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225 | } |
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226 | |||
1963 | serge | 227 | int drm_fb_helper_init(struct drm_device *dev, |
228 | struct drm_fb_helper *fb_helper, |
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229 | int crtc_count, int max_conn_count) |
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1179 | serge | 230 | { |
231 | struct drm_crtc *crtc; |
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232 | int ret = 0; |
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233 | int i; |
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234 | |||
1963 | serge | 235 | fb_helper->dev = dev; |
236 | |||
237 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); |
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238 | |||
239 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); |
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240 | if (!fb_helper->crtc_info) |
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1179 | serge | 241 | return -ENOMEM; |
242 | |||
1963 | serge | 243 | fb_helper->crtc_count = crtc_count; |
244 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); |
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245 | if (!fb_helper->connector_info) { |
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246 | kfree(fb_helper->crtc_info); |
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247 | return -ENOMEM; |
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248 | } |
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249 | fb_helper->connector_count = 0; |
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1179 | serge | 250 | |
251 | for (i = 0; i < crtc_count; i++) { |
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1963 | serge | 252 | fb_helper->crtc_info[i].mode_set.connectors = |
1179 | serge | 253 | kcalloc(max_conn_count, |
254 | sizeof(struct drm_connector *), |
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255 | GFP_KERNEL); |
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256 | |||
1963 | serge | 257 | if (!fb_helper->crtc_info[i].mode_set.connectors) { |
1179 | serge | 258 | ret = -ENOMEM; |
259 | goto out_free; |
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260 | } |
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1963 | serge | 261 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
1179 | serge | 262 | } |
263 | |||
264 | i = 0; |
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265 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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1963 | serge | 266 | fb_helper->crtc_info[i].crtc_id = crtc->base.id; |
267 | fb_helper->crtc_info[i].mode_set.crtc = crtc; |
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1179 | serge | 268 | i++; |
269 | } |
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1963 | serge | 270 | fb_helper->conn_limit = max_conn_count; |
1179 | serge | 271 | return 0; |
272 | out_free: |
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1963 | serge | 273 | drm_fb_helper_crtc_free(fb_helper); |
1179 | serge | 274 | return -ENOMEM; |
275 | } |
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1963 | serge | 276 | EXPORT_SYMBOL(drm_fb_helper_init); |
1179 | serge | 277 | |
1246 | serge | 278 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
1221 | serge | 279 | u16 blue, u16 regno, struct fb_info *info) |
280 | { |
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281 | struct drm_fb_helper *fb_helper = info->par; |
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282 | struct drm_framebuffer *fb = fb_helper->fb; |
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283 | int pindex; |
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284 | |||
1246 | serge | 285 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
286 | u32 *palette; |
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287 | u32 value; |
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288 | /* place color in psuedopalette */ |
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289 | if (regno > 16) |
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290 | return -EINVAL; |
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291 | palette = (u32 *)info->pseudo_palette; |
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292 | red >>= (16 - info->var.red.length); |
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293 | green >>= (16 - info->var.green.length); |
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294 | blue >>= (16 - info->var.blue.length); |
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295 | value = (red << info->var.red.offset) | |
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296 | (green << info->var.green.offset) | |
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297 | (blue << info->var.blue.offset); |
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1963 | serge | 298 | if (info->var.transp.length > 0) { |
299 | u32 mask = (1 << info->var.transp.length) - 1; |
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300 | mask <<= info->var.transp.offset; |
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301 | value |= mask; |
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302 | } |
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1246 | serge | 303 | palette[regno] = value; |
304 | return 0; |
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305 | } |
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306 | |||
1221 | serge | 307 | pindex = regno; |
308 | |||
309 | if (fb->bits_per_pixel == 16) { |
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310 | pindex = regno << 3; |
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311 | |||
312 | if (fb->depth == 16 && regno > 63) |
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1246 | serge | 313 | return -EINVAL; |
1221 | serge | 314 | if (fb->depth == 15 && regno > 31) |
1246 | serge | 315 | return -EINVAL; |
1221 | serge | 316 | |
317 | if (fb->depth == 16) { |
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318 | u16 r, g, b; |
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319 | int i; |
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320 | if (regno < 32) { |
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321 | for (i = 0; i < 8; i++) |
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322 | fb_helper->funcs->gamma_set(crtc, red, |
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323 | green, blue, pindex + i); |
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324 | } |
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325 | |||
326 | fb_helper->funcs->gamma_get(crtc, &r, |
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327 | &g, &b, |
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328 | pindex >> 1); |
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329 | |||
330 | for (i = 0; i < 4; i++) |
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331 | fb_helper->funcs->gamma_set(crtc, r, |
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332 | green, b, |
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333 | (pindex >> 1) + i); |
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334 | } |
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335 | } |
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336 | |||
337 | if (fb->depth != 16) |
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338 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); |
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1246 | serge | 339 | return 0; |
1221 | serge | 340 | } |
341 | |||
342 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
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343 | { |
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344 | struct drm_fb_helper *fb_helper = info->par; |
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1963 | serge | 345 | struct drm_crtc_helper_funcs *crtc_funcs; |
1221 | serge | 346 | u16 *red, *green, *blue, *transp; |
347 | struct drm_crtc *crtc; |
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1963 | serge | 348 | int i, j, rc = 0; |
1221 | serge | 349 | int start; |
350 | |||
351 | for (i = 0; i < fb_helper->crtc_count; i++) { |
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1963 | serge | 352 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
353 | crtc_funcs = crtc->helper_private; |
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1221 | serge | 354 | |
355 | red = cmap->red; |
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356 | green = cmap->green; |
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357 | blue = cmap->blue; |
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358 | transp = cmap->transp; |
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359 | start = cmap->start; |
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360 | |||
1963 | serge | 361 | for (j = 0; j < cmap->len; j++) { |
1221 | serge | 362 | u16 hred, hgreen, hblue, htransp = 0xffff; |
363 | |||
364 | hred = *red++; |
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365 | hgreen = *green++; |
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366 | hblue = *blue++; |
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367 | |||
368 | if (transp) |
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369 | htransp = *transp++; |
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370 | |||
1246 | serge | 371 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
372 | if (rc) |
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373 | return rc; |
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1221 | serge | 374 | } |
375 | crtc_funcs->load_lut(crtc); |
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376 | } |
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377 | return rc; |
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378 | } |
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379 | EXPORT_SYMBOL(drm_fb_helper_setcmap); |
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380 | |||
1179 | serge | 381 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
382 | struct fb_info *info) |
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383 | { |
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384 | struct drm_fb_helper *fb_helper = info->par; |
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385 | struct drm_framebuffer *fb = fb_helper->fb; |
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386 | int depth; |
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387 | |||
1963 | serge | 388 | if (var->pixclock != 0 || in_dbg_master()) |
1179 | serge | 389 | return -EINVAL; |
390 | |||
391 | /* Need to resize the fb object !!! */ |
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1404 | serge | 392 | if (var->bits_per_pixel > fb->bits_per_pixel || var->xres > fb->width || var->yres > fb->height) { |
393 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " |
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394 | "object %dx%d-%d > %dx%d-%d\n", var->xres, var->yres, var->bits_per_pixel, |
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395 | fb->width, fb->height, fb->bits_per_pixel); |
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1179 | serge | 396 | return -EINVAL; |
397 | } |
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398 | |||
399 | switch (var->bits_per_pixel) { |
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400 | case 16: |
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401 | depth = (var->green.length == 6) ? 16 : 15; |
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402 | break; |
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403 | case 32: |
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404 | depth = (var->transp.length > 0) ? 32 : 24; |
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405 | break; |
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406 | default: |
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407 | depth = var->bits_per_pixel; |
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408 | break; |
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409 | } |
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410 | |||
411 | switch (depth) { |
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412 | case 8: |
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413 | var->red.offset = 0; |
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414 | var->green.offset = 0; |
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415 | var->blue.offset = 0; |
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416 | var->red.length = 8; |
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417 | var->green.length = 8; |
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418 | var->blue.length = 8; |
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419 | var->transp.length = 0; |
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420 | var->transp.offset = 0; |
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421 | break; |
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422 | case 15: |
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423 | var->red.offset = 10; |
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424 | var->green.offset = 5; |
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425 | var->blue.offset = 0; |
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426 | var->red.length = 5; |
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427 | var->green.length = 5; |
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428 | var->blue.length = 5; |
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429 | var->transp.length = 1; |
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430 | var->transp.offset = 15; |
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431 | break; |
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432 | case 16: |
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433 | var->red.offset = 11; |
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434 | var->green.offset = 5; |
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435 | var->blue.offset = 0; |
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436 | var->red.length = 5; |
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437 | var->green.length = 6; |
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438 | var->blue.length = 5; |
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439 | var->transp.length = 0; |
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440 | var->transp.offset = 0; |
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441 | break; |
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442 | case 24: |
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443 | var->red.offset = 16; |
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444 | var->green.offset = 8; |
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445 | var->blue.offset = 0; |
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446 | var->red.length = 8; |
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447 | var->green.length = 8; |
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448 | var->blue.length = 8; |
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449 | var->transp.length = 0; |
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450 | var->transp.offset = 0; |
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451 | break; |
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452 | case 32: |
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453 | var->red.offset = 16; |
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454 | var->green.offset = 8; |
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455 | var->blue.offset = 0; |
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456 | var->red.length = 8; |
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457 | var->green.length = 8; |
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458 | var->blue.length = 8; |
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459 | var->transp.length = 8; |
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460 | var->transp.offset = 24; |
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461 | break; |
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462 | default: |
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463 | return -EINVAL; |
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464 | } |
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465 | return 0; |
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466 | } |
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467 | EXPORT_SYMBOL(drm_fb_helper_check_var); |
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468 | |||
469 | /* this will let fbcon do the mode init */ |
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470 | int drm_fb_helper_set_par(struct fb_info *info) |
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471 | { |
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472 | struct drm_fb_helper *fb_helper = info->par; |
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473 | struct drm_device *dev = fb_helper->dev; |
||
474 | struct fb_var_screeninfo *var = &info->var; |
||
475 | struct drm_crtc *crtc; |
||
476 | int ret; |
||
477 | int i; |
||
478 | |||
1313 | serge | 479 | if (var->pixclock != 0) { |
1430 | serge | 480 | DRM_ERROR("PIXEL CLOCK SET\n"); |
1179 | serge | 481 | return -EINVAL; |
482 | } |
||
483 | |||
1963 | serge | 484 | mutex_lock(&dev->mode_config.mutex); |
1179 | serge | 485 | for (i = 0; i < fb_helper->crtc_count; i++) { |
1963 | serge | 486 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
1268 | serge | 487 | ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set); |
1963 | serge | 488 | if (ret) { |
1179 | serge | 489 | mutex_unlock(&dev->mode_config.mutex); |
490 | return ret; |
||
491 | } |
||
492 | } |
||
1963 | serge | 493 | mutex_unlock(&dev->mode_config.mutex); |
494 | |||
495 | if (fb_helper->delayed_hotplug) { |
||
496 | fb_helper->delayed_hotplug = false; |
||
497 | // drm_fb_helper_hotplug_event(fb_helper); |
||
498 | } |
||
1179 | serge | 499 | return 0; |
500 | } |
||
501 | EXPORT_SYMBOL(drm_fb_helper_set_par); |
||
502 | |||
503 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, |
||
504 | struct fb_info *info) |
||
505 | { |
||
506 | struct drm_fb_helper *fb_helper = info->par; |
||
507 | struct drm_device *dev = fb_helper->dev; |
||
508 | struct drm_mode_set *modeset; |
||
509 | struct drm_crtc *crtc; |
||
510 | int ret = 0; |
||
511 | int i; |
||
512 | |||
1963 | serge | 513 | mutex_lock(&dev->mode_config.mutex); |
1179 | serge | 514 | for (i = 0; i < fb_helper->crtc_count; i++) { |
1963 | serge | 515 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
1179 | serge | 516 | |
517 | modeset = &fb_helper->crtc_info[i].mode_set; |
||
518 | |||
519 | modeset->x = var->xoffset; |
||
520 | modeset->y = var->yoffset; |
||
521 | |||
522 | if (modeset->num_connectors) { |
||
523 | ret = crtc->funcs->set_config(modeset); |
||
524 | if (!ret) { |
||
525 | info->var.xoffset = var->xoffset; |
||
526 | info->var.yoffset = var->yoffset; |
||
527 | } |
||
528 | } |
||
529 | } |
||
1963 | serge | 530 | mutex_unlock(&dev->mode_config.mutex); |
1179 | serge | 531 | return ret; |
532 | } |
||
533 | EXPORT_SYMBOL(drm_fb_helper_pan_display); |
||
534 | |||
1963 | serge | 535 | int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
536 | int preferred_bpp) |
||
1179 | serge | 537 | { |
538 | int new_fb = 0; |
||
539 | int crtc_count = 0; |
||
1963 | serge | 540 | int i; |
1179 | serge | 541 | struct fb_info *info; |
1963 | serge | 542 | struct drm_fb_helper_surface_size sizes; |
543 | int gamma_size = 0; |
||
1179 | serge | 544 | |
1963 | serge | 545 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); |
546 | sizes.surface_depth = 24; |
||
547 | sizes.surface_bpp = 32; |
||
548 | sizes.fb_width = (unsigned)-1; |
||
549 | sizes.fb_height = (unsigned)-1; |
||
1221 | serge | 550 | |
1963 | serge | 551 | sizes.surface_depth = 24; |
552 | sizes.surface_bpp = 32; |
||
1221 | serge | 553 | |
1963 | serge | 554 | crtc_count = 0; |
555 | for (i = 0; i < fb_helper->crtc_count; i++) { |
||
556 | struct drm_display_mode *desired_mode; |
||
557 | desired_mode = fb_helper->crtc_info[i].desired_mode; |
||
1221 | serge | 558 | |
1963 | serge | 559 | if (desired_mode) { |
560 | if (gamma_size == 0) |
||
561 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; |
||
562 | if (desired_mode->hdisplay < sizes.fb_width) |
||
563 | sizes.fb_width = desired_mode->hdisplay; |
||
564 | if (desired_mode->vdisplay < sizes.fb_height) |
||
565 | sizes.fb_height = desired_mode->vdisplay; |
||
566 | if (desired_mode->hdisplay > sizes.surface_width) |
||
567 | sizes.surface_width = desired_mode->hdisplay; |
||
568 | if (desired_mode->vdisplay > sizes.surface_height) |
||
569 | sizes.surface_height = desired_mode->vdisplay; |
||
1179 | serge | 570 | crtc_count++; |
571 | } |
||
572 | } |
||
573 | |||
1963 | serge | 574 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
1179 | serge | 575 | /* hmm everyone went away - assume VGA cable just fell out |
576 | and will come back later. */ |
||
1963 | serge | 577 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
578 | sizes.fb_width = sizes.surface_width = 1024; |
||
579 | sizes.fb_height = sizes.surface_height = 768; |
||
1179 | serge | 580 | } |
581 | |||
1963 | serge | 582 | /* push down into drivers */ |
1179 | serge | 583 | |
1963 | serge | 584 | DRM_INFO("enter fb probe\n"); |
1179 | serge | 585 | |
586 | |||
1963 | serge | 587 | new_fb = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
588 | if (new_fb < 0) |
||
589 | return new_fb; |
||
1179 | serge | 590 | |
1963 | serge | 591 | info = fb_helper->fbdev; |
1179 | serge | 592 | |
1963 | serge | 593 | /* set the fb pointer */ |
594 | for (i = 0; i < fb_helper->crtc_count; i++) { |
||
595 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; |
||
1179 | serge | 596 | } |
597 | |||
598 | if (new_fb) { |
||
1313 | serge | 599 | info->var.pixclock = 0; |
1963 | serge | 600 | |
601 | printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, |
||
602 | info->fix.id); |
||
603 | |||
1179 | serge | 604 | } else { |
605 | drm_fb_helper_set_par(info); |
||
606 | } |
||
607 | |||
1963 | serge | 608 | |
609 | if (new_fb) |
||
610 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); |
||
611 | |||
612 | |||
613 | LEAVE(); |
||
614 | |||
1179 | serge | 615 | return 0; |
616 | } |
||
617 | EXPORT_SYMBOL(drm_fb_helper_single_fb_probe); |
||
618 | |||
1221 | serge | 619 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
620 | uint32_t depth) |
||
1179 | serge | 621 | { |
622 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
||
1221 | serge | 623 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : |
1246 | serge | 624 | FB_VISUAL_TRUECOLOR; |
1963 | serge | 625 | info->fix.mmio_start = 0; |
626 | info->fix.mmio_len = 0; |
||
1179 | serge | 627 | info->fix.type_aux = 0; |
628 | info->fix.xpanstep = 1; /* doing it in hw */ |
||
629 | info->fix.ypanstep = 1; /* doing it in hw */ |
||
630 | info->fix.ywrapstep = 0; |
||
631 | info->fix.accel = FB_ACCEL_NONE; |
||
632 | info->fix.type_aux = 0; |
||
633 | |||
634 | info->fix.line_length = pitch; |
||
635 | return; |
||
636 | } |
||
637 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); |
||
638 | |||
1963 | serge | 639 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
1179 | serge | 640 | uint32_t fb_width, uint32_t fb_height) |
641 | { |
||
1963 | serge | 642 | struct drm_framebuffer *fb = fb_helper->fb; |
643 | info->pseudo_palette = fb_helper->pseudo_palette; |
||
1179 | serge | 644 | info->var.xres_virtual = fb->width; |
645 | info->var.yres_virtual = fb->height; |
||
646 | info->var.bits_per_pixel = fb->bits_per_pixel; |
||
1963 | serge | 647 | info->var.accel_flags = FB_ACCELF_TEXT; |
1179 | serge | 648 | info->var.xoffset = 0; |
649 | info->var.yoffset = 0; |
||
650 | info->var.activate = FB_ACTIVATE_NOW; |
||
651 | info->var.height = -1; |
||
652 | info->var.width = -1; |
||
653 | |||
654 | switch (fb->depth) { |
||
655 | case 8: |
||
656 | info->var.red.offset = 0; |
||
657 | info->var.green.offset = 0; |
||
658 | info->var.blue.offset = 0; |
||
659 | info->var.red.length = 8; /* 8bit DAC */ |
||
660 | info->var.green.length = 8; |
||
661 | info->var.blue.length = 8; |
||
662 | info->var.transp.offset = 0; |
||
663 | info->var.transp.length = 0; |
||
664 | break; |
||
665 | case 15: |
||
666 | info->var.red.offset = 10; |
||
667 | info->var.green.offset = 5; |
||
668 | info->var.blue.offset = 0; |
||
669 | info->var.red.length = 5; |
||
670 | info->var.green.length = 5; |
||
671 | info->var.blue.length = 5; |
||
672 | info->var.transp.offset = 15; |
||
673 | info->var.transp.length = 1; |
||
674 | break; |
||
675 | case 16: |
||
676 | info->var.red.offset = 11; |
||
677 | info->var.green.offset = 5; |
||
678 | info->var.blue.offset = 0; |
||
679 | info->var.red.length = 5; |
||
680 | info->var.green.length = 6; |
||
681 | info->var.blue.length = 5; |
||
682 | info->var.transp.offset = 0; |
||
683 | break; |
||
684 | case 24: |
||
685 | info->var.red.offset = 16; |
||
686 | info->var.green.offset = 8; |
||
687 | info->var.blue.offset = 0; |
||
688 | info->var.red.length = 8; |
||
689 | info->var.green.length = 8; |
||
690 | info->var.blue.length = 8; |
||
691 | info->var.transp.offset = 0; |
||
692 | info->var.transp.length = 0; |
||
693 | break; |
||
694 | case 32: |
||
695 | info->var.red.offset = 16; |
||
696 | info->var.green.offset = 8; |
||
697 | info->var.blue.offset = 0; |
||
698 | info->var.red.length = 8; |
||
699 | info->var.green.length = 8; |
||
700 | info->var.blue.length = 8; |
||
701 | info->var.transp.offset = 24; |
||
702 | info->var.transp.length = 8; |
||
703 | break; |
||
704 | default: |
||
705 | break; |
||
706 | } |
||
707 | |||
708 | info->var.xres = fb_width; |
||
709 | info->var.yres = fb_height; |
||
710 | } |
||
711 | EXPORT_SYMBOL(drm_fb_helper_fill_var); |
||
1963 | serge | 712 | |
713 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
||
714 | uint32_t maxX, |
||
715 | uint32_t maxY) |
||
716 | { |
||
717 | struct drm_connector *connector; |
||
718 | int count = 0; |
||
719 | int i; |
||
720 | |||
721 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
722 | connector = fb_helper->connector_info[i]->connector; |
||
723 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
||
724 | } |
||
725 | |||
726 | return count; |
||
727 | } |
||
728 | |||
729 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
||
730 | { |
||
731 | struct drm_display_mode *mode; |
||
732 | |||
733 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
||
734 | if (drm_mode_width(mode) > width || |
||
735 | drm_mode_height(mode) > height) |
||
736 | continue; |
||
737 | if (mode->type & DRM_MODE_TYPE_PREFERRED) |
||
738 | return mode; |
||
739 | } |
||
740 | return NULL; |
||
741 | } |
||
742 | |||
743 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
||
744 | { |
||
745 | struct drm_cmdline_mode *cmdline_mode; |
||
746 | cmdline_mode = &fb_connector->cmdline_mode; |
||
747 | return cmdline_mode->specified; |
||
748 | } |
||
749 | |||
750 | |||
751 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) |
||
752 | { |
||
753 | bool enable; |
||
754 | |||
755 | if (strict) { |
||
756 | enable = connector->status == connector_status_connected; |
||
757 | } else { |
||
758 | enable = connector->status != connector_status_disconnected; |
||
759 | } |
||
760 | return enable; |
||
761 | } |
||
762 | |||
763 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
||
764 | bool *enabled) |
||
765 | { |
||
766 | bool any_enabled = false; |
||
767 | struct drm_connector *connector; |
||
768 | int i = 0; |
||
769 | |||
770 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
771 | connector = fb_helper->connector_info[i]->connector; |
||
772 | enabled[i] = drm_connector_enabled(connector, true); |
||
773 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, |
||
774 | enabled[i] ? "yes" : "no"); |
||
775 | any_enabled |= enabled[i]; |
||
776 | } |
||
777 | |||
778 | if (any_enabled) |
||
779 | return; |
||
780 | |||
781 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
782 | connector = fb_helper->connector_info[i]->connector; |
||
783 | enabled[i] = drm_connector_enabled(connector, false); |
||
784 | } |
||
785 | } |
||
786 | |||
787 | |||
788 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
||
789 | struct drm_display_mode **modes, |
||
790 | bool *enabled, int width, int height) |
||
791 | { |
||
792 | struct drm_fb_helper_connector *fb_helper_conn; |
||
793 | int i; |
||
794 | |||
795 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
796 | fb_helper_conn = fb_helper->connector_info[i]; |
||
797 | |||
798 | if (enabled[i] == false) |
||
799 | continue; |
||
800 | |||
801 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", |
||
802 | fb_helper_conn->connector->base.id); |
||
803 | |||
804 | /* got for command line mode first */ |
||
805 | // modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
||
806 | |||
807 | modes[i] = NULL; |
||
808 | |||
809 | if (!modes[i]) { |
||
810 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", |
||
811 | fb_helper_conn->connector->base.id); |
||
812 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); |
||
813 | } |
||
814 | /* No preferred modes, pick one off the list */ |
||
815 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
||
816 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) |
||
817 | break; |
||
818 | } |
||
819 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : |
||
820 | "none"); |
||
821 | } |
||
822 | return true; |
||
823 | } |
||
824 | |||
825 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
||
826 | struct drm_fb_helper_crtc **best_crtcs, |
||
827 | struct drm_display_mode **modes, |
||
828 | int n, int width, int height) |
||
829 | { |
||
830 | int c, o; |
||
831 | struct drm_device *dev = fb_helper->dev; |
||
832 | struct drm_connector *connector; |
||
833 | struct drm_connector_helper_funcs *connector_funcs; |
||
834 | struct drm_encoder *encoder; |
||
835 | struct drm_fb_helper_crtc *best_crtc; |
||
836 | int my_score, best_score, score; |
||
837 | struct drm_fb_helper_crtc **crtcs, *crtc; |
||
838 | struct drm_fb_helper_connector *fb_helper_conn; |
||
839 | |||
840 | if (n == fb_helper->connector_count) |
||
841 | return 0; |
||
842 | |||
843 | fb_helper_conn = fb_helper->connector_info[n]; |
||
844 | connector = fb_helper_conn->connector; |
||
845 | |||
846 | best_crtcs[n] = NULL; |
||
847 | best_crtc = NULL; |
||
848 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
||
849 | if (modes[n] == NULL) |
||
850 | return best_score; |
||
851 | |||
852 | crtcs = kzalloc(dev->mode_config.num_connector * |
||
853 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
||
854 | if (!crtcs) |
||
855 | return best_score; |
||
856 | |||
857 | my_score = 1; |
||
858 | if (connector->status == connector_status_connected) |
||
859 | my_score++; |
||
860 | if (drm_has_cmdline_mode(fb_helper_conn)) |
||
861 | my_score++; |
||
862 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
||
863 | my_score++; |
||
864 | |||
865 | connector_funcs = connector->helper_private; |
||
866 | encoder = connector_funcs->best_encoder(connector); |
||
867 | if (!encoder) |
||
868 | goto out; |
||
869 | |||
870 | /* select a crtc for this connector and then attempt to configure |
||
871 | remaining connectors */ |
||
872 | for (c = 0; c < fb_helper->crtc_count; c++) { |
||
873 | crtc = &fb_helper->crtc_info[c]; |
||
874 | |||
875 | if ((encoder->possible_crtcs & (1 << c)) == 0) { |
||
876 | continue; |
||
877 | } |
||
878 | |||
879 | for (o = 0; o < n; o++) |
||
880 | if (best_crtcs[o] == crtc) |
||
881 | break; |
||
882 | |||
883 | if (o < n) { |
||
884 | /* ignore cloning unless only a single crtc */ |
||
885 | if (fb_helper->crtc_count > 1) |
||
886 | continue; |
||
887 | |||
888 | if (!drm_mode_equal(modes[o], modes[n])) |
||
889 | continue; |
||
890 | } |
||
891 | |||
892 | crtcs[n] = crtc; |
||
893 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
||
894 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, |
||
895 | width, height); |
||
896 | if (score > best_score) { |
||
897 | best_crtc = crtc; |
||
898 | best_score = score; |
||
899 | memcpy(best_crtcs, crtcs, |
||
900 | dev->mode_config.num_connector * |
||
901 | sizeof(struct drm_fb_helper_crtc *)); |
||
902 | } |
||
903 | } |
||
904 | out: |
||
905 | kfree(crtcs); |
||
906 | return best_score; |
||
907 | } |
||
908 | |||
909 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
||
910 | { |
||
911 | struct drm_device *dev = fb_helper->dev; |
||
912 | struct drm_fb_helper_crtc **crtcs; |
||
913 | struct drm_display_mode **modes; |
||
914 | struct drm_encoder *encoder; |
||
915 | struct drm_mode_set *modeset; |
||
916 | bool *enabled; |
||
917 | int width, height; |
||
918 | int i, ret; |
||
919 | |||
920 | DRM_DEBUG_KMS("\n"); |
||
921 | |||
922 | width = dev->mode_config.max_width; |
||
923 | height = dev->mode_config.max_height; |
||
924 | |||
925 | /* clean out all the encoder/crtc combos */ |
||
1986 | serge | 926 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
2004 | serge | 927 | encoder->crtc = NULL; |
1986 | serge | 928 | } |
1963 | serge | 929 | |
930 | crtcs = kcalloc(dev->mode_config.num_connector, |
||
931 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
||
932 | modes = kcalloc(dev->mode_config.num_connector, |
||
933 | sizeof(struct drm_display_mode *), GFP_KERNEL); |
||
934 | enabled = kcalloc(dev->mode_config.num_connector, |
||
935 | sizeof(bool), GFP_KERNEL); |
||
936 | |||
937 | drm_enable_connectors(fb_helper, enabled); |
||
938 | |||
939 | //ret = drm_target_cloned(fb_helper, modes, enabled, width, height); |
||
940 | |||
941 | ret = 0; |
||
942 | |||
943 | if (!ret) { |
||
944 | ret = drm_target_preferred(fb_helper, modes, enabled, width, height); |
||
945 | if (!ret) |
||
946 | DRM_ERROR("Unable to find initial modes\n"); |
||
947 | } |
||
948 | |||
949 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); |
||
950 | |||
951 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
||
952 | |||
953 | /* need to set the modesets up here for use later */ |
||
954 | /* fill out the connector<->crtc mappings into the modesets */ |
||
955 | for (i = 0; i < fb_helper->crtc_count; i++) { |
||
956 | modeset = &fb_helper->crtc_info[i].mode_set; |
||
957 | modeset->num_connectors = 0; |
||
958 | } |
||
959 | |||
960 | for (i = 0; i < fb_helper->connector_count; i++) { |
||
961 | struct drm_display_mode *mode = modes[i]; |
||
962 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
||
963 | modeset = &fb_crtc->mode_set; |
||
964 | |||
965 | if (mode && fb_crtc) { |
||
966 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
||
967 | mode->name, fb_crtc->mode_set.crtc->base.id); |
||
968 | fb_crtc->desired_mode = mode; |
||
969 | if (modeset->mode) |
||
970 | drm_mode_destroy(dev, modeset->mode); |
||
971 | modeset->mode = drm_mode_duplicate(dev, |
||
972 | fb_crtc->desired_mode); |
||
973 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
||
974 | } |
||
975 | } |
||
976 | |||
977 | kfree(crtcs); |
||
978 | kfree(modes); |
||
979 | kfree(enabled); |
||
980 | } |
||
981 | |||
982 | /** |
||
983 | * drm_helper_initial_config - setup a sane initial connector configuration |
||
984 | * @dev: DRM device |
||
985 | * |
||
986 | * LOCKING: |
||
987 | * Called at init time, must take mode config lock. |
||
988 | * |
||
989 | * Scan the CRTCs and connectors and try to put together an initial setup. |
||
990 | * At the moment, this is a cloned configuration across all heads with |
||
991 | * a new framebuffer object as the backing store. |
||
992 | * |
||
993 | * RETURNS: |
||
994 | * Zero if everything went ok, nonzero otherwise. |
||
995 | */ |
||
996 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
||
997 | { |
||
998 | struct drm_device *dev = fb_helper->dev; |
||
999 | int count = 0; |
||
1000 | |||
1001 | /* disable all the possible outputs/crtcs before entering KMS mode */ |
||
1002 | // drm_helper_disable_unused_functions(fb_helper->dev); |
||
1003 | |||
1004 | // drm_fb_helper_parse_command_line(fb_helper); |
||
1005 | |||
1006 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
||
1007 | dev->mode_config.max_width, |
||
1008 | dev->mode_config.max_height); |
||
1009 | /* |
||
1010 | * we shouldn't end up with no modes here. |
||
1011 | */ |
||
1012 | if (count == 0) { |
||
1013 | printk(KERN_INFO "No connectors reported connected with modes\n"); |
||
1014 | } |
||
1015 | drm_setup_crtcs(fb_helper); |
||
1016 | |||
1017 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
||
1018 | } |
||
1019 | EXPORT_SYMBOL(drm_fb_helper_initial_config);>>->>>><>>>>>>>>>>>>>>>>>>><>=><=>><>><>><>><>>>>>>>>>> |