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Commit e63fea163319d9784abc0c82aeaef451cc80116e

Authored by Rob Clark
Committed by Greg Kroah-Hartman
1 parent f1d5aa4663

drm: fix fb-helper vs MST dangling connector ptrs (v2) 

commit 2148f18fdb45f31ca269a7787fbc24053cd42e70 upstream.

VT switch back/forth from console to xserver (for example) has potential
to go horribly wrong if a dynamic DP MST connector ends up in the saved
modeset that is restored when switching back to fbcon.

When removing a dynamic connector, don't forget to clean up the saved
state.

v1: original
v2: null out set->fb if no more connectors to avoid making i915 cranky

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1184968
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Showing 1 changed file with 30 additions and 0 deletions Inline Diff

drivers/gpu/drm/drm_fb_helper.c
Diff comments   View file @ e63fea1
1 /* 1 /*
2 * Copyright (c) 2006-2009 Red Hat Inc. 2 * Copyright (c) 2006-2009 Red Hat Inc.
3 * Copyright (c) 2006-2008 Intel Corporation 3 * Copyright (c) 2006-2008 Intel Corporation
4 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> 4 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie>
5 * 5 *
6 * DRM framebuffer helper functions 6 * DRM framebuffer helper functions
7 * 7 *
8 * Permission to use, copy, modify, distribute, and sell this software and its 8 * Permission to use, copy, modify, distribute, and sell this software and its
9 * documentation for any purpose is hereby granted without fee, provided that 9 * documentation for any purpose is hereby granted without fee, provided that
10 * the above copyright notice appear in all copies and that both that copyright 10 * the above copyright notice appear in all copies and that both that copyright
11 * notice and this permission notice appear in supporting documentation, and 11 * notice and this permission notice appear in supporting documentation, and
12 * that the name of the copyright holders not be used in advertising or 12 * that the name of the copyright holders not be used in advertising or
13 * publicity pertaining to distribution of the software without specific, 13 * publicity pertaining to distribution of the software without specific,
14 * written prior permission. The copyright holders make no representations 14 * written prior permission. The copyright holders make no representations
15 * about the suitability of this software for any purpose. It is provided "as 15 * about the suitability of this software for any purpose. It is provided "as
16 * is" without express or implied warranty. 16 * is" without express or implied warranty.
17 * 17 *
18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE. 24 * OF THIS SOFTWARE.
25 * 25 *
26 * Authors: 26 * Authors:
27 * Dave Airlie <airlied@linux.ie> 27 * Dave Airlie <airlied@linux.ie>
28 * Jesse Barnes <jesse.barnes@intel.com> 28 * Jesse Barnes <jesse.barnes@intel.com>
29 */ 29 */
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31 31
32 #include <linux/kernel.h> 32 #include <linux/kernel.h>
33 #include <linux/sysrq.h> 33 #include <linux/sysrq.h>
34 #include <linux/slab.h> 34 #include <linux/slab.h>
35 #include <linux/fb.h> 35 #include <linux/fb.h>
36 #include <linux/module.h> 36 #include <linux/module.h>
37 #include <drm/drmP.h> 37 #include <drm/drmP.h>
38 #include <drm/drm_crtc.h> 38 #include <drm/drm_crtc.h>
39 #include <drm/drm_fb_helper.h> 39 #include <drm/drm_fb_helper.h>
40 #include <drm/drm_crtc_helper.h> 40 #include <drm/drm_crtc_helper.h>
41 41
42 static LIST_HEAD(kernel_fb_helper_list); 42 static LIST_HEAD(kernel_fb_helper_list);
43 43
44 /** 44 /**
45 * DOC: fbdev helpers 45 * DOC: fbdev helpers
46 * 46 *
47 * The fb helper functions are useful to provide an fbdev on top of a drm kernel 47 * The fb helper functions are useful to provide an fbdev on top of a drm kernel
48 * mode setting driver. They can be used mostly independently from the crtc 48 * mode setting driver. They can be used mostly independently from the crtc
49 * helper functions used by many drivers to implement the kernel mode setting 49 * helper functions used by many drivers to implement the kernel mode setting
50 * interfaces. 50 * interfaces.
51 * 51 *
52 * Initialization is done as a four-step process with drm_fb_helper_prepare(), 52 * Initialization is done as a four-step process with drm_fb_helper_prepare(),
53 * drm_fb_helper_init(), drm_fb_helper_single_add_all_connectors() and 53 * drm_fb_helper_init(), drm_fb_helper_single_add_all_connectors() and
54 * drm_fb_helper_initial_config(). Drivers with fancier requirements than the 54 * drm_fb_helper_initial_config(). Drivers with fancier requirements than the
55 * default behaviour can override the third step with their own code. 55 * default behaviour can override the third step with their own code.
56 * Teardown is done with drm_fb_helper_fini(). 56 * Teardown is done with drm_fb_helper_fini().
57 * 57 *
58 * At runtime drivers should restore the fbdev console by calling 58 * At runtime drivers should restore the fbdev console by calling
59 * drm_fb_helper_restore_fbdev_mode() from their ->lastclose callback. They 59 * drm_fb_helper_restore_fbdev_mode() from their ->lastclose callback. They
60 * should also notify the fb helper code from updates to the output 60 * should also notify the fb helper code from updates to the output
61 * configuration by calling drm_fb_helper_hotplug_event(). For easier 61 * configuration by calling drm_fb_helper_hotplug_event(). For easier
62 * integration with the output polling code in drm_crtc_helper.c the modeset 62 * integration with the output polling code in drm_crtc_helper.c the modeset
63 * code provides a ->output_poll_changed callback. 63 * code provides a ->output_poll_changed callback.
64 * 64 *
65 * All other functions exported by the fb helper library can be used to 65 * All other functions exported by the fb helper library can be used to
66 * implement the fbdev driver interface by the driver. 66 * implement the fbdev driver interface by the driver.
67 * 67 *
68 * It is possible, though perhaps somewhat tricky, to implement race-free 68 * It is possible, though perhaps somewhat tricky, to implement race-free
69 * hotplug detection using the fbdev helpers. The drm_fb_helper_prepare() 69 * hotplug detection using the fbdev helpers. The drm_fb_helper_prepare()
70 * helper must be called first to initialize the minimum required to make 70 * helper must be called first to initialize the minimum required to make
71 * hotplug detection work. Drivers also need to make sure to properly set up 71 * hotplug detection work. Drivers also need to make sure to properly set up
72 * the dev->mode_config.funcs member. After calling drm_kms_helper_poll_init() 72 * the dev->mode_config.funcs member. After calling drm_kms_helper_poll_init()
73 * it is safe to enable interrupts and start processing hotplug events. At the 73 * it is safe to enable interrupts and start processing hotplug events. At the
74 * same time, drivers should initialize all modeset objects such as CRTCs, 74 * same time, drivers should initialize all modeset objects such as CRTCs,
75 * encoders and connectors. To finish up the fbdev helper initialization, the 75 * encoders and connectors. To finish up the fbdev helper initialization, the
76 * drm_fb_helper_init() function is called. To probe for all attached displays 76 * drm_fb_helper_init() function is called. To probe for all attached displays
77 * and set up an initial configuration using the detected hardware, drivers 77 * and set up an initial configuration using the detected hardware, drivers
78 * should call drm_fb_helper_single_add_all_connectors() followed by 78 * should call drm_fb_helper_single_add_all_connectors() followed by
79 * drm_fb_helper_initial_config(). 79 * drm_fb_helper_initial_config().
80 */ 80 */
81 81
82 /** 82 /**
83 * drm_fb_helper_single_add_all_connectors() - add all connectors to fbdev 83 * drm_fb_helper_single_add_all_connectors() - add all connectors to fbdev
84 * emulation helper 84 * emulation helper
85 * @fb_helper: fbdev initialized with drm_fb_helper_init 85 * @fb_helper: fbdev initialized with drm_fb_helper_init
86 * 86 *
87 * This functions adds all the available connectors for use with the given 87 * This functions adds all the available connectors for use with the given
88 * fb_helper. This is a separate step to allow drivers to freely assign 88 * fb_helper. This is a separate step to allow drivers to freely assign
89 * connectors to the fbdev, e.g. if some are reserved for special purposes or 89 * connectors to the fbdev, e.g. if some are reserved for special purposes or
90 * not adequate to be used for the fbcon. 90 * not adequate to be used for the fbcon.
91 * 91 *
92 * Since this is part of the initial setup before the fbdev is published, no 92 * Since this is part of the initial setup before the fbdev is published, no
93 * locking is required. 93 * locking is required.
94 */ 94 */
95 int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) 95 int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper)
96 { 96 {
97 struct drm_device *dev = fb_helper->dev; 97 struct drm_device *dev = fb_helper->dev;
98 struct drm_connector *connector; 98 struct drm_connector *connector;
99 int i; 99 int i;
100 100
101 list_for_each_entry(connector, &dev->mode_config.connector_list, head) { 101 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
102 struct drm_fb_helper_connector *fb_helper_connector; 102 struct drm_fb_helper_connector *fb_helper_connector;
103 103
104 fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); 104 fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL);
105 if (!fb_helper_connector) 105 if (!fb_helper_connector)
106 goto fail; 106 goto fail;
107 107
108 fb_helper_connector->connector = connector; 108 fb_helper_connector->connector = connector;
109 fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; 109 fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector;
110 } 110 }
111 return 0; 111 return 0;
112 fail: 112 fail:
113 for (i = 0; i < fb_helper->connector_count; i++) { 113 for (i = 0; i < fb_helper->connector_count; i++) {
114 kfree(fb_helper->connector_info[i]); 114 kfree(fb_helper->connector_info[i]);
115 fb_helper->connector_info[i] = NULL; 115 fb_helper->connector_info[i] = NULL;
116 } 116 }
117 fb_helper->connector_count = 0; 117 fb_helper->connector_count = 0;
118 return -ENOMEM; 118 return -ENOMEM;
119 } 119 }
120 EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors); 120 EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors);
121 121
122 int drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper, struct drm_connector *connector) 122 int drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper, struct drm_connector *connector)
123 { 123 {
124 struct drm_fb_helper_connector **temp; 124 struct drm_fb_helper_connector **temp;
125 struct drm_fb_helper_connector *fb_helper_connector; 125 struct drm_fb_helper_connector *fb_helper_connector;
126 126
127 WARN_ON(!mutex_is_locked(&fb_helper->dev->mode_config.mutex)); 127 WARN_ON(!mutex_is_locked(&fb_helper->dev->mode_config.mutex));
128 if (fb_helper->connector_count + 1 > fb_helper->connector_info_alloc_count) { 128 if (fb_helper->connector_count + 1 > fb_helper->connector_info_alloc_count) {
129 temp = krealloc(fb_helper->connector_info, sizeof(struct drm_fb_helper_connector *) * (fb_helper->connector_count + 1), GFP_KERNEL); 129 temp = krealloc(fb_helper->connector_info, sizeof(struct drm_fb_helper_connector *) * (fb_helper->connector_count + 1), GFP_KERNEL);
130 if (!temp) 130 if (!temp)
131 return -ENOMEM; 131 return -ENOMEM;
132 132
133 fb_helper->connector_info_alloc_count = fb_helper->connector_count + 1; 133 fb_helper->connector_info_alloc_count = fb_helper->connector_count + 1;
134 fb_helper->connector_info = temp; 134 fb_helper->connector_info = temp;
135 } 135 }
136 136
137 137
138 fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); 138 fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL);
139 if (!fb_helper_connector) 139 if (!fb_helper_connector)
140 return -ENOMEM; 140 return -ENOMEM;
141 141
142 fb_helper_connector->connector = connector; 142 fb_helper_connector->connector = connector;
143 fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; 143 fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector;
144 return 0; 144 return 0;
145 } 145 }
146 EXPORT_SYMBOL(drm_fb_helper_add_one_connector); 146 EXPORT_SYMBOL(drm_fb_helper_add_one_connector);
147 147
148 static void remove_from_modeset(struct drm_mode_set *set,
149 struct drm_connector *connector)
150 {
151 int i, j;
152
153 for (i = 0; i < set->num_connectors; i++) {
154 if (set->connectors[i] == connector)
155 break;
156 }
157
158 if (i == set->num_connectors)
159 return;
160
161 for (j = i + 1; j < set->num_connectors; j++) {
162 set->connectors[j - 1] = set->connectors[j];
163 }
164 set->num_connectors--;
165
166 /* because i915 is pissy about this..
167 * TODO maybe need to makes sure we set it back to !=NULL somewhere?
168 */
169 if (set->num_connectors == 0)
170 set->fb = NULL;
171 }
172
148 int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper, 173 int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
149 struct drm_connector *connector) 174 struct drm_connector *connector)
150 { 175 {
151 struct drm_fb_helper_connector *fb_helper_connector; 176 struct drm_fb_helper_connector *fb_helper_connector;
152 int i, j; 177 int i, j;
153 178
154 WARN_ON(!mutex_is_locked(&fb_helper->dev->mode_config.mutex)); 179 WARN_ON(!mutex_is_locked(&fb_helper->dev->mode_config.mutex));
155 180
156 for (i = 0; i < fb_helper->connector_count; i++) { 181 for (i = 0; i < fb_helper->connector_count; i++) {
157 if (fb_helper->connector_info[i]->connector == connector) 182 if (fb_helper->connector_info[i]->connector == connector)
158 break; 183 break;
159 } 184 }
160 185
161 if (i == fb_helper->connector_count) 186 if (i == fb_helper->connector_count)
162 return -EINVAL; 187 return -EINVAL;
163 fb_helper_connector = fb_helper->connector_info[i]; 188 fb_helper_connector = fb_helper->connector_info[i];
164 189
165 for (j = i + 1; j < fb_helper->connector_count; j++) { 190 for (j = i + 1; j < fb_helper->connector_count; j++) {
166 fb_helper->connector_info[j - 1] = fb_helper->connector_info[j]; 191 fb_helper->connector_info[j - 1] = fb_helper->connector_info[j];
167 } 192 }
168 fb_helper->connector_count--; 193 fb_helper->connector_count--;
169 kfree(fb_helper_connector); 194 kfree(fb_helper_connector);
195
196 /* also cleanup dangling references to the connector: */
197 for (i = 0; i < fb_helper->crtc_count; i++)
198 remove_from_modeset(&fb_helper->crtc_info[i].mode_set, connector);
199
170 return 0; 200 return 0;
171 } 201 }
172 EXPORT_SYMBOL(drm_fb_helper_remove_one_connector); 202 EXPORT_SYMBOL(drm_fb_helper_remove_one_connector);
173 203
174 static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) 204 static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper)
175 { 205 {
176 uint16_t *r_base, *g_base, *b_base; 206 uint16_t *r_base, *g_base, *b_base;
177 int i; 207 int i;
178 208
179 if (helper->funcs->gamma_get == NULL) 209 if (helper->funcs->gamma_get == NULL)
180 return; 210 return;
181 211
182 r_base = crtc->gamma_store; 212 r_base = crtc->gamma_store;
183 g_base = r_base + crtc->gamma_size; 213 g_base = r_base + crtc->gamma_size;
184 b_base = g_base + crtc->gamma_size; 214 b_base = g_base + crtc->gamma_size;
185 215
186 for (i = 0; i < crtc->gamma_size; i++) 216 for (i = 0; i < crtc->gamma_size; i++)
187 helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i); 217 helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i);
188 } 218 }
189 219
190 static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) 220 static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc)
191 { 221 {
192 uint16_t *r_base, *g_base, *b_base; 222 uint16_t *r_base, *g_base, *b_base;
193 223
194 if (crtc->funcs->gamma_set == NULL) 224 if (crtc->funcs->gamma_set == NULL)
195 return; 225 return;
196 226
197 r_base = crtc->gamma_store; 227 r_base = crtc->gamma_store;
198 g_base = r_base + crtc->gamma_size; 228 g_base = r_base + crtc->gamma_size;
199 b_base = g_base + crtc->gamma_size; 229 b_base = g_base + crtc->gamma_size;
200 230
201 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); 231 crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size);
202 } 232 }
203 233
204 /** 234 /**
205 * drm_fb_helper_debug_enter - implementation for ->fb_debug_enter 235 * drm_fb_helper_debug_enter - implementation for ->fb_debug_enter
206 * @info: fbdev registered by the helper 236 * @info: fbdev registered by the helper
207 */ 237 */
208 int drm_fb_helper_debug_enter(struct fb_info *info) 238 int drm_fb_helper_debug_enter(struct fb_info *info)
209 { 239 {
210 struct drm_fb_helper *helper = info->par; 240 struct drm_fb_helper *helper = info->par;
211 struct drm_crtc_helper_funcs *funcs; 241 struct drm_crtc_helper_funcs *funcs;
212 int i; 242 int i;
213 243
214 list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { 244 list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) {
215 for (i = 0; i < helper->crtc_count; i++) { 245 for (i = 0; i < helper->crtc_count; i++) {
216 struct drm_mode_set *mode_set = 246 struct drm_mode_set *mode_set =
217 &helper->crtc_info[i].mode_set; 247 &helper->crtc_info[i].mode_set;
218 248
219 if (!mode_set->crtc->enabled) 249 if (!mode_set->crtc->enabled)
220 continue; 250 continue;
221 251
222 funcs = mode_set->crtc->helper_private; 252 funcs = mode_set->crtc->helper_private;
223 drm_fb_helper_save_lut_atomic(mode_set->crtc, helper); 253 drm_fb_helper_save_lut_atomic(mode_set->crtc, helper);
224 funcs->mode_set_base_atomic(mode_set->crtc, 254 funcs->mode_set_base_atomic(mode_set->crtc,
225 mode_set->fb, 255 mode_set->fb,
226 mode_set->x, 256 mode_set->x,
227 mode_set->y, 257 mode_set->y,
228 ENTER_ATOMIC_MODE_SET); 258 ENTER_ATOMIC_MODE_SET);
229 } 259 }
230 } 260 }
231 261
232 return 0; 262 return 0;
233 } 263 }
234 EXPORT_SYMBOL(drm_fb_helper_debug_enter); 264 EXPORT_SYMBOL(drm_fb_helper_debug_enter);
235 265
236 /* Find the real fb for a given fb helper CRTC */ 266 /* Find the real fb for a given fb helper CRTC */
237 static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc) 267 static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc)
238 { 268 {
239 struct drm_device *dev = crtc->dev; 269 struct drm_device *dev = crtc->dev;
240 struct drm_crtc *c; 270 struct drm_crtc *c;
241 271
242 list_for_each_entry(c, &dev->mode_config.crtc_list, head) { 272 list_for_each_entry(c, &dev->mode_config.crtc_list, head) {
243 if (crtc->base.id == c->base.id) 273 if (crtc->base.id == c->base.id)
244 return c->primary->fb; 274 return c->primary->fb;
245 } 275 }
246 276
247 return NULL; 277 return NULL;
248 } 278 }
249 279
250 /** 280 /**
251 * drm_fb_helper_debug_leave - implementation for ->fb_debug_leave 281 * drm_fb_helper_debug_leave - implementation for ->fb_debug_leave
252 * @info: fbdev registered by the helper 282 * @info: fbdev registered by the helper
253 */ 283 */
254 int drm_fb_helper_debug_leave(struct fb_info *info) 284 int drm_fb_helper_debug_leave(struct fb_info *info)
255 { 285 {
256 struct drm_fb_helper *helper = info->par; 286 struct drm_fb_helper *helper = info->par;
257 struct drm_crtc *crtc; 287 struct drm_crtc *crtc;
258 struct drm_crtc_helper_funcs *funcs; 288 struct drm_crtc_helper_funcs *funcs;
259 struct drm_framebuffer *fb; 289 struct drm_framebuffer *fb;
260 int i; 290 int i;
261 291
262 for (i = 0; i < helper->crtc_count; i++) { 292 for (i = 0; i < helper->crtc_count; i++) {
263 struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; 293 struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set;
264 crtc = mode_set->crtc; 294 crtc = mode_set->crtc;
265 funcs = crtc->helper_private; 295 funcs = crtc->helper_private;
266 fb = drm_mode_config_fb(crtc); 296 fb = drm_mode_config_fb(crtc);
267 297
268 if (!crtc->enabled) 298 if (!crtc->enabled)
269 continue; 299 continue;
270 300
271 if (!fb) { 301 if (!fb) {
272 DRM_ERROR("no fb to restore??\n"); 302 DRM_ERROR("no fb to restore??\n");
273 continue; 303 continue;
274 } 304 }
275 305
276 drm_fb_helper_restore_lut_atomic(mode_set->crtc); 306 drm_fb_helper_restore_lut_atomic(mode_set->crtc);
277 funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x, 307 funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x,
278 crtc->y, LEAVE_ATOMIC_MODE_SET); 308 crtc->y, LEAVE_ATOMIC_MODE_SET);
279 } 309 }
280 310
281 return 0; 311 return 0;
282 } 312 }
283 EXPORT_SYMBOL(drm_fb_helper_debug_leave); 313 EXPORT_SYMBOL(drm_fb_helper_debug_leave);
284 314
285 static bool restore_fbdev_mode(struct drm_fb_helper *fb_helper) 315 static bool restore_fbdev_mode(struct drm_fb_helper *fb_helper)
286 { 316 {
287 struct drm_device *dev = fb_helper->dev; 317 struct drm_device *dev = fb_helper->dev;
288 struct drm_plane *plane; 318 struct drm_plane *plane;
289 bool error = false; 319 bool error = false;
290 int i; 320 int i;
291 321
292 drm_warn_on_modeset_not_all_locked(dev); 322 drm_warn_on_modeset_not_all_locked(dev);
293 323
294 list_for_each_entry(plane, &dev->mode_config.plane_list, head) { 324 list_for_each_entry(plane, &dev->mode_config.plane_list, head) {
295 if (plane->type != DRM_PLANE_TYPE_PRIMARY) 325 if (plane->type != DRM_PLANE_TYPE_PRIMARY)
296 drm_plane_force_disable(plane); 326 drm_plane_force_disable(plane);
297 327
298 if (dev->mode_config.rotation_property) { 328 if (dev->mode_config.rotation_property) {
299 drm_mode_plane_set_obj_prop(plane, 329 drm_mode_plane_set_obj_prop(plane,
300 dev->mode_config.rotation_property, 330 dev->mode_config.rotation_property,
301 BIT(DRM_ROTATE_0)); 331 BIT(DRM_ROTATE_0));
302 } 332 }
303 } 333 }
304 334
305 for (i = 0; i < fb_helper->crtc_count; i++) { 335 for (i = 0; i < fb_helper->crtc_count; i++) {
306 struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set; 336 struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set;
307 struct drm_crtc *crtc = mode_set->crtc; 337 struct drm_crtc *crtc = mode_set->crtc;
308 int ret; 338 int ret;
309 339
310 if (crtc->funcs->cursor_set) { 340 if (crtc->funcs->cursor_set) {
311 ret = crtc->funcs->cursor_set(crtc, NULL, 0, 0, 0); 341 ret = crtc->funcs->cursor_set(crtc, NULL, 0, 0, 0);
312 if (ret) 342 if (ret)
313 error = true; 343 error = true;
314 } 344 }
315 345
316 ret = drm_mode_set_config_internal(mode_set); 346 ret = drm_mode_set_config_internal(mode_set);
317 if (ret) 347 if (ret)
318 error = true; 348 error = true;
319 } 349 }
320 return error; 350 return error;
321 } 351 }
322 /** 352 /**
323 * drm_fb_helper_restore_fbdev_mode - restore fbdev configuration 353 * drm_fb_helper_restore_fbdev_mode - restore fbdev configuration
324 * @fb_helper: fbcon to restore 354 * @fb_helper: fbcon to restore
325 * 355 *
326 * This should be called from driver's drm ->lastclose callback 356 * This should be called from driver's drm ->lastclose callback
327 * when implementing an fbcon on top of kms using this helper. This ensures that 357 * when implementing an fbcon on top of kms using this helper. This ensures that
328 * the user isn't greeted with a black screen when e.g. X dies. 358 * the user isn't greeted with a black screen when e.g. X dies.
329 * 359 *
330 * Use this variant if you need to bypass locking (panic), or already 360 * Use this variant if you need to bypass locking (panic), or already
331 * hold all modeset locks. Otherwise use drm_fb_helper_restore_fbdev_mode_unlocked() 361 * hold all modeset locks. Otherwise use drm_fb_helper_restore_fbdev_mode_unlocked()
332 */ 362 */
333 static bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper) 363 static bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper)
334 { 364 {
335 return restore_fbdev_mode(fb_helper); 365 return restore_fbdev_mode(fb_helper);
336 } 366 }
337 367
338 /** 368 /**
339 * drm_fb_helper_restore_fbdev_mode_unlocked - restore fbdev configuration 369 * drm_fb_helper_restore_fbdev_mode_unlocked - restore fbdev configuration
340 * @fb_helper: fbcon to restore 370 * @fb_helper: fbcon to restore
341 * 371 *
342 * This should be called from driver's drm ->lastclose callback 372 * This should be called from driver's drm ->lastclose callback
343 * when implementing an fbcon on top of kms using this helper. This ensures that 373 * when implementing an fbcon on top of kms using this helper. This ensures that
344 * the user isn't greeted with a black screen when e.g. X dies. 374 * the user isn't greeted with a black screen when e.g. X dies.
345 */ 375 */
346 bool drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper) 376 bool drm_fb_helper_restore_fbdev_mode_unlocked(struct drm_fb_helper *fb_helper)
347 { 377 {
348 struct drm_device *dev = fb_helper->dev; 378 struct drm_device *dev = fb_helper->dev;
349 bool ret; 379 bool ret;
350 bool do_delayed = false; 380 bool do_delayed = false;
351 381
352 drm_modeset_lock_all(dev); 382 drm_modeset_lock_all(dev);
353 ret = restore_fbdev_mode(fb_helper); 383 ret = restore_fbdev_mode(fb_helper);
354 384
355 do_delayed = fb_helper->delayed_hotplug; 385 do_delayed = fb_helper->delayed_hotplug;
356 if (do_delayed) 386 if (do_delayed)
357 fb_helper->delayed_hotplug = false; 387 fb_helper->delayed_hotplug = false;
358 drm_modeset_unlock_all(dev); 388 drm_modeset_unlock_all(dev);
359 389
360 if (do_delayed) 390 if (do_delayed)
361 drm_fb_helper_hotplug_event(fb_helper); 391 drm_fb_helper_hotplug_event(fb_helper);
362 return ret; 392 return ret;
363 } 393 }
364 EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode_unlocked); 394 EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode_unlocked);
365 395
366 /* 396 /*
367 * restore fbcon display for all kms driver's using this helper, used for sysrq 397 * restore fbcon display for all kms driver's using this helper, used for sysrq
368 * and panic handling. 398 * and panic handling.
369 */ 399 */
370 static bool drm_fb_helper_force_kernel_mode(void) 400 static bool drm_fb_helper_force_kernel_mode(void)
371 { 401 {
372 bool ret, error = false; 402 bool ret, error = false;
373 struct drm_fb_helper *helper; 403 struct drm_fb_helper *helper;
374 404
375 if (list_empty(&kernel_fb_helper_list)) 405 if (list_empty(&kernel_fb_helper_list))
376 return false; 406 return false;
377 407
378 list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { 408 list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) {
379 struct drm_device *dev = helper->dev; 409 struct drm_device *dev = helper->dev;
380 410
381 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) 411 if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
382 continue; 412 continue;
383 413
384 /* 414 /*
385 * NOTE: Use trylock mode to avoid deadlocks and sleeping in 415 * NOTE: Use trylock mode to avoid deadlocks and sleeping in
386 * panic context. 416 * panic context.
387 */ 417 */
388 if (__drm_modeset_lock_all(dev, true) != 0) { 418 if (__drm_modeset_lock_all(dev, true) != 0) {
389 error = true; 419 error = true;
390 continue; 420 continue;
391 } 421 }
392 422
393 ret = drm_fb_helper_restore_fbdev_mode(helper); 423 ret = drm_fb_helper_restore_fbdev_mode(helper);
394 if (ret) 424 if (ret)
395 error = true; 425 error = true;
396 426
397 drm_modeset_unlock_all(dev); 427 drm_modeset_unlock_all(dev);
398 } 428 }
399 return error; 429 return error;
400 } 430 }
401 431
402 static int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, 432 static int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed,
403 void *panic_str) 433 void *panic_str)
404 { 434 {
405 /* 435 /*
406 * It's a waste of time and effort to switch back to text console 436 * It's a waste of time and effort to switch back to text console
407 * if the kernel should reboot before panic messages can be seen. 437 * if the kernel should reboot before panic messages can be seen.
408 */ 438 */
409 if (panic_timeout < 0) 439 if (panic_timeout < 0)
410 return 0; 440 return 0;
411 441
412 pr_err("panic occurred, switching back to text console\n"); 442 pr_err("panic occurred, switching back to text console\n");
413 return drm_fb_helper_force_kernel_mode(); 443 return drm_fb_helper_force_kernel_mode();
414 } 444 }
415 445
416 static struct notifier_block paniced = { 446 static struct notifier_block paniced = {
417 .notifier_call = drm_fb_helper_panic, 447 .notifier_call = drm_fb_helper_panic,
418 }; 448 };
419 449
420 static bool drm_fb_helper_is_bound(struct drm_fb_helper *fb_helper) 450 static bool drm_fb_helper_is_bound(struct drm_fb_helper *fb_helper)
421 { 451 {
422 struct drm_device *dev = fb_helper->dev; 452 struct drm_device *dev = fb_helper->dev;
423 struct drm_crtc *crtc; 453 struct drm_crtc *crtc;
424 int bound = 0, crtcs_bound = 0; 454 int bound = 0, crtcs_bound = 0;
425 455
426 /* Sometimes user space wants everything disabled, so don't steal the 456 /* Sometimes user space wants everything disabled, so don't steal the
427 * display if there's a master. */ 457 * display if there's a master. */
428 if (dev->primary->master) 458 if (dev->primary->master)
429 return false; 459 return false;
430 460
431 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 461 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
432 if (crtc->primary->fb) 462 if (crtc->primary->fb)
433 crtcs_bound++; 463 crtcs_bound++;
434 if (crtc->primary->fb == fb_helper->fb) 464 if (crtc->primary->fb == fb_helper->fb)
435 bound++; 465 bound++;
436 } 466 }
437 467
438 if (bound < crtcs_bound) 468 if (bound < crtcs_bound)
439 return false; 469 return false;
440 470
441 return true; 471 return true;
442 } 472 }
443 473
444 #ifdef CONFIG_MAGIC_SYSRQ 474 #ifdef CONFIG_MAGIC_SYSRQ
445 static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) 475 static void drm_fb_helper_restore_work_fn(struct work_struct *ignored)
446 { 476 {
447 bool ret; 477 bool ret;
448 ret = drm_fb_helper_force_kernel_mode(); 478 ret = drm_fb_helper_force_kernel_mode();
449 if (ret == true) 479 if (ret == true)
450 DRM_ERROR("Failed to restore crtc configuration\n"); 480 DRM_ERROR("Failed to restore crtc configuration\n");
451 } 481 }
452 static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); 482 static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn);
453 483
454 static void drm_fb_helper_sysrq(int dummy1) 484 static void drm_fb_helper_sysrq(int dummy1)
455 { 485 {
456 schedule_work(&drm_fb_helper_restore_work); 486 schedule_work(&drm_fb_helper_restore_work);
457 } 487 }
458 488
459 static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { 489 static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = {
460 .handler = drm_fb_helper_sysrq, 490 .handler = drm_fb_helper_sysrq,
461 .help_msg = "force-fb(V)", 491 .help_msg = "force-fb(V)",
462 .action_msg = "Restore framebuffer console", 492 .action_msg = "Restore framebuffer console",
463 }; 493 };
464 #else 494 #else
465 static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; 495 static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { };
466 #endif 496 #endif
467 497
468 static void drm_fb_helper_dpms(struct fb_info *info, int dpms_mode) 498 static void drm_fb_helper_dpms(struct fb_info *info, int dpms_mode)
469 { 499 {
470 struct drm_fb_helper *fb_helper = info->par; 500 struct drm_fb_helper *fb_helper = info->par;
471 struct drm_device *dev = fb_helper->dev; 501 struct drm_device *dev = fb_helper->dev;
472 struct drm_crtc *crtc; 502 struct drm_crtc *crtc;
473 struct drm_connector *connector; 503 struct drm_connector *connector;
474 int i, j; 504 int i, j;
475 505
476 /* 506 /*
477 * fbdev->blank can be called from irq context in case of a panic. 507 * fbdev->blank can be called from irq context in case of a panic.
478 * Since we already have our own special panic handler which will 508 * Since we already have our own special panic handler which will
479 * restore the fbdev console mode completely, just bail out early. 509 * restore the fbdev console mode completely, just bail out early.
480 */ 510 */
481 if (oops_in_progress) 511 if (oops_in_progress)
482 return; 512 return;
483 513
484 /* 514 /*
485 * For each CRTC in this fb, turn the connectors on/off. 515 * For each CRTC in this fb, turn the connectors on/off.
486 */ 516 */
487 drm_modeset_lock_all(dev); 517 drm_modeset_lock_all(dev);
488 if (!drm_fb_helper_is_bound(fb_helper)) { 518 if (!drm_fb_helper_is_bound(fb_helper)) {
489 drm_modeset_unlock_all(dev); 519 drm_modeset_unlock_all(dev);
490 return; 520 return;
491 } 521 }
492 522
493 for (i = 0; i < fb_helper->crtc_count; i++) { 523 for (i = 0; i < fb_helper->crtc_count; i++) {
494 crtc = fb_helper->crtc_info[i].mode_set.crtc; 524 crtc = fb_helper->crtc_info[i].mode_set.crtc;
495 525
496 if (!crtc->enabled) 526 if (!crtc->enabled)
497 continue; 527 continue;
498 528
499 /* Walk the connectors & encoders on this fb turning them on/off */ 529 /* Walk the connectors & encoders on this fb turning them on/off */
500 for (j = 0; j < fb_helper->connector_count; j++) { 530 for (j = 0; j < fb_helper->connector_count; j++) {
501 connector = fb_helper->connector_info[j]->connector; 531 connector = fb_helper->connector_info[j]->connector;
502 connector->funcs->dpms(connector, dpms_mode); 532 connector->funcs->dpms(connector, dpms_mode);
503 drm_object_property_set_value(&connector->base, 533 drm_object_property_set_value(&connector->base,
504 dev->mode_config.dpms_property, dpms_mode); 534 dev->mode_config.dpms_property, dpms_mode);
505 } 535 }
506 } 536 }
507 drm_modeset_unlock_all(dev); 537 drm_modeset_unlock_all(dev);
508 } 538 }
509 539
510 /** 540 /**
511 * drm_fb_helper_blank - implementation for ->fb_blank 541 * drm_fb_helper_blank - implementation for ->fb_blank
512 * @blank: desired blanking state 542 * @blank: desired blanking state
513 * @info: fbdev registered by the helper 543 * @info: fbdev registered by the helper
514 */ 544 */
515 int drm_fb_helper_blank(int blank, struct fb_info *info) 545 int drm_fb_helper_blank(int blank, struct fb_info *info)
516 { 546 {
517 switch (blank) { 547 switch (blank) {
518 /* Display: On; HSync: On, VSync: On */ 548 /* Display: On; HSync: On, VSync: On */
519 case FB_BLANK_UNBLANK: 549 case FB_BLANK_UNBLANK:
520 drm_fb_helper_dpms(info, DRM_MODE_DPMS_ON); 550 drm_fb_helper_dpms(info, DRM_MODE_DPMS_ON);
521 break; 551 break;
522 /* Display: Off; HSync: On, VSync: On */ 552 /* Display: Off; HSync: On, VSync: On */
523 case FB_BLANK_NORMAL: 553 case FB_BLANK_NORMAL:
524 drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); 554 drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY);
525 break; 555 break;
526 /* Display: Off; HSync: Off, VSync: On */ 556 /* Display: Off; HSync: Off, VSync: On */
527 case FB_BLANK_HSYNC_SUSPEND: 557 case FB_BLANK_HSYNC_SUSPEND:
528 drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); 558 drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY);
529 break; 559 break;
530 /* Display: Off; HSync: On, VSync: Off */ 560 /* Display: Off; HSync: On, VSync: Off */
531 case FB_BLANK_VSYNC_SUSPEND: 561 case FB_BLANK_VSYNC_SUSPEND:
532 drm_fb_helper_dpms(info, DRM_MODE_DPMS_SUSPEND); 562 drm_fb_helper_dpms(info, DRM_MODE_DPMS_SUSPEND);
533 break; 563 break;
534 /* Display: Off; HSync: Off, VSync: Off */ 564 /* Display: Off; HSync: Off, VSync: Off */
535 case FB_BLANK_POWERDOWN: 565 case FB_BLANK_POWERDOWN:
536 drm_fb_helper_dpms(info, DRM_MODE_DPMS_OFF); 566 drm_fb_helper_dpms(info, DRM_MODE_DPMS_OFF);
537 break; 567 break;
538 } 568 }
539 return 0; 569 return 0;
540 } 570 }
541 EXPORT_SYMBOL(drm_fb_helper_blank); 571 EXPORT_SYMBOL(drm_fb_helper_blank);
542 572
543 static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) 573 static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper)
544 { 574 {
545 int i; 575 int i;
546 576
547 for (i = 0; i < helper->connector_count; i++) 577 for (i = 0; i < helper->connector_count; i++)
548 kfree(helper->connector_info[i]); 578 kfree(helper->connector_info[i]);
549 kfree(helper->connector_info); 579 kfree(helper->connector_info);
550 for (i = 0; i < helper->crtc_count; i++) { 580 for (i = 0; i < helper->crtc_count; i++) {
551 kfree(helper->crtc_info[i].mode_set.connectors); 581 kfree(helper->crtc_info[i].mode_set.connectors);
552 if (helper->crtc_info[i].mode_set.mode) 582 if (helper->crtc_info[i].mode_set.mode)
553 drm_mode_destroy(helper->dev, helper->crtc_info[i].mode_set.mode); 583 drm_mode_destroy(helper->dev, helper->crtc_info[i].mode_set.mode);
554 } 584 }
555 kfree(helper->crtc_info); 585 kfree(helper->crtc_info);
556 } 586 }
557 587
558 /** 588 /**
559 * drm_fb_helper_prepare - setup a drm_fb_helper structure 589 * drm_fb_helper_prepare - setup a drm_fb_helper structure
560 * @dev: DRM device 590 * @dev: DRM device
561 * @helper: driver-allocated fbdev helper structure to set up 591 * @helper: driver-allocated fbdev helper structure to set up
562 * @funcs: pointer to structure of functions associate with this helper 592 * @funcs: pointer to structure of functions associate with this helper
563 * 593 *
564 * Sets up the bare minimum to make the framebuffer helper usable. This is 594 * Sets up the bare minimum to make the framebuffer helper usable. This is
565 * useful to implement race-free initialization of the polling helpers. 595 * useful to implement race-free initialization of the polling helpers.
566 */ 596 */
567 void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper, 597 void drm_fb_helper_prepare(struct drm_device *dev, struct drm_fb_helper *helper,
568 const struct drm_fb_helper_funcs *funcs) 598 const struct drm_fb_helper_funcs *funcs)
569 { 599 {
570 INIT_LIST_HEAD(&helper->kernel_fb_list); 600 INIT_LIST_HEAD(&helper->kernel_fb_list);
571 helper->funcs = funcs; 601 helper->funcs = funcs;
572 helper->dev = dev; 602 helper->dev = dev;
573 } 603 }
574 EXPORT_SYMBOL(drm_fb_helper_prepare); 604 EXPORT_SYMBOL(drm_fb_helper_prepare);
575 605
576 /** 606 /**
577 * drm_fb_helper_init - initialize a drm_fb_helper structure 607 * drm_fb_helper_init - initialize a drm_fb_helper structure
578 * @dev: drm device 608 * @dev: drm device
579 * @fb_helper: driver-allocated fbdev helper structure to initialize 609 * @fb_helper: driver-allocated fbdev helper structure to initialize
580 * @crtc_count: maximum number of crtcs to support in this fbdev emulation 610 * @crtc_count: maximum number of crtcs to support in this fbdev emulation
581 * @max_conn_count: max connector count 611 * @max_conn_count: max connector count
582 * 612 *
583 * This allocates the structures for the fbdev helper with the given limits. 613 * This allocates the structures for the fbdev helper with the given limits.
584 * Note that this won't yet touch the hardware (through the driver interfaces) 614 * Note that this won't yet touch the hardware (through the driver interfaces)
585 * nor register the fbdev. This is only done in drm_fb_helper_initial_config() 615 * nor register the fbdev. This is only done in drm_fb_helper_initial_config()
586 * to allow driver writes more control over the exact init sequence. 616 * to allow driver writes more control over the exact init sequence.
587 * 617 *
588 * Drivers must call drm_fb_helper_prepare() before calling this function. 618 * Drivers must call drm_fb_helper_prepare() before calling this function.
589 * 619 *
590 * RETURNS: 620 * RETURNS:
591 * Zero if everything went ok, nonzero otherwise. 621 * Zero if everything went ok, nonzero otherwise.
592 */ 622 */
593 int drm_fb_helper_init(struct drm_device *dev, 623 int drm_fb_helper_init(struct drm_device *dev,
594 struct drm_fb_helper *fb_helper, 624 struct drm_fb_helper *fb_helper,
595 int crtc_count, int max_conn_count) 625 int crtc_count, int max_conn_count)
596 { 626 {
597 struct drm_crtc *crtc; 627 struct drm_crtc *crtc;
598 int i; 628 int i;
599 629
600 if (!max_conn_count) 630 if (!max_conn_count)
601 return -EINVAL; 631 return -EINVAL;
602 632
603 fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); 633 fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL);
604 if (!fb_helper->crtc_info) 634 if (!fb_helper->crtc_info)
605 return -ENOMEM; 635 return -ENOMEM;
606 636
607 fb_helper->crtc_count = crtc_count; 637 fb_helper->crtc_count = crtc_count;
608 fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); 638 fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL);
609 if (!fb_helper->connector_info) { 639 if (!fb_helper->connector_info) {
610 kfree(fb_helper->crtc_info); 640 kfree(fb_helper->crtc_info);
611 return -ENOMEM; 641 return -ENOMEM;
612 } 642 }
613 fb_helper->connector_info_alloc_count = dev->mode_config.num_connector; 643 fb_helper->connector_info_alloc_count = dev->mode_config.num_connector;
614 fb_helper->connector_count = 0; 644 fb_helper->connector_count = 0;
615 645
616 for (i = 0; i < crtc_count; i++) { 646 for (i = 0; i < crtc_count; i++) {
617 fb_helper->crtc_info[i].mode_set.connectors = 647 fb_helper->crtc_info[i].mode_set.connectors =
618 kcalloc(max_conn_count, 648 kcalloc(max_conn_count,
619 sizeof(struct drm_connector *), 649 sizeof(struct drm_connector *),
620 GFP_KERNEL); 650 GFP_KERNEL);
621 651
622 if (!fb_helper->crtc_info[i].mode_set.connectors) 652 if (!fb_helper->crtc_info[i].mode_set.connectors)
623 goto out_free; 653 goto out_free;
624 fb_helper->crtc_info[i].mode_set.num_connectors = 0; 654 fb_helper->crtc_info[i].mode_set.num_connectors = 0;
625 } 655 }
626 656
627 i = 0; 657 i = 0;
628 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { 658 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
629 fb_helper->crtc_info[i].mode_set.crtc = crtc; 659 fb_helper->crtc_info[i].mode_set.crtc = crtc;
630 i++; 660 i++;
631 } 661 }
632 662
633 return 0; 663 return 0;
634 out_free: 664 out_free:
635 drm_fb_helper_crtc_free(fb_helper); 665 drm_fb_helper_crtc_free(fb_helper);
636 return -ENOMEM; 666 return -ENOMEM;
637 } 667 }
638 EXPORT_SYMBOL(drm_fb_helper_init); 668 EXPORT_SYMBOL(drm_fb_helper_init);
639 669
640 void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) 670 void drm_fb_helper_fini(struct drm_fb_helper *fb_helper)
641 { 671 {
642 if (!list_empty(&fb_helper->kernel_fb_list)) { 672 if (!list_empty(&fb_helper->kernel_fb_list)) {
643 list_del(&fb_helper->kernel_fb_list); 673 list_del(&fb_helper->kernel_fb_list);
644 if (list_empty(&kernel_fb_helper_list)) { 674 if (list_empty(&kernel_fb_helper_list)) {
645 pr_info("drm: unregistered panic notifier\n"); 675 pr_info("drm: unregistered panic notifier\n");
646 atomic_notifier_chain_unregister(&panic_notifier_list, 676 atomic_notifier_chain_unregister(&panic_notifier_list,
647 &paniced); 677 &paniced);
648 unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); 678 unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op);
649 } 679 }
650 } 680 }
651 681
652 drm_fb_helper_crtc_free(fb_helper); 682 drm_fb_helper_crtc_free(fb_helper);
653 683
654 } 684 }
655 EXPORT_SYMBOL(drm_fb_helper_fini); 685 EXPORT_SYMBOL(drm_fb_helper_fini);
656 686
657 static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, 687 static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green,
658 u16 blue, u16 regno, struct fb_info *info) 688 u16 blue, u16 regno, struct fb_info *info)
659 { 689 {
660 struct drm_fb_helper *fb_helper = info->par; 690 struct drm_fb_helper *fb_helper = info->par;
661 struct drm_framebuffer *fb = fb_helper->fb; 691 struct drm_framebuffer *fb = fb_helper->fb;
662 int pindex; 692 int pindex;
663 693
664 if (info->fix.visual == FB_VISUAL_TRUECOLOR) { 694 if (info->fix.visual == FB_VISUAL_TRUECOLOR) {
665 u32 *palette; 695 u32 *palette;
666 u32 value; 696 u32 value;
667 /* place color in psuedopalette */ 697 /* place color in psuedopalette */
668 if (regno > 16) 698 if (regno > 16)
669 return -EINVAL; 699 return -EINVAL;
670 palette = (u32 *)info->pseudo_palette; 700 palette = (u32 *)info->pseudo_palette;
671 red >>= (16 - info->var.red.length); 701 red >>= (16 - info->var.red.length);
672 green >>= (16 - info->var.green.length); 702 green >>= (16 - info->var.green.length);
673 blue >>= (16 - info->var.blue.length); 703 blue >>= (16 - info->var.blue.length);
674 value = (red << info->var.red.offset) | 704 value = (red << info->var.red.offset) |
675 (green << info->var.green.offset) | 705 (green << info->var.green.offset) |
676 (blue << info->var.blue.offset); 706 (blue << info->var.blue.offset);
677 if (info->var.transp.length > 0) { 707 if (info->var.transp.length > 0) {
678 u32 mask = (1 << info->var.transp.length) - 1; 708 u32 mask = (1 << info->var.transp.length) - 1;
679 mask <<= info->var.transp.offset; 709 mask <<= info->var.transp.offset;
680 value |= mask; 710 value |= mask;
681 } 711 }
682 palette[regno] = value; 712 palette[regno] = value;
683 return 0; 713 return 0;
684 } 714 }
685 715
686 /* 716 /*
687 * The driver really shouldn't advertise pseudo/directcolor 717 * The driver really shouldn't advertise pseudo/directcolor
688 * visuals if it can't deal with the palette. 718 * visuals if it can't deal with the palette.
689 */ 719 */
690 if (WARN_ON(!fb_helper->funcs->gamma_set || 720 if (WARN_ON(!fb_helper->funcs->gamma_set ||
691 !fb_helper->funcs->gamma_get)) 721 !fb_helper->funcs->gamma_get))
692 return -EINVAL; 722 return -EINVAL;
693 723
694 pindex = regno; 724 pindex = regno;
695 725
696 if (fb->bits_per_pixel == 16) { 726 if (fb->bits_per_pixel == 16) {
697 pindex = regno << 3; 727 pindex = regno << 3;
698 728
699 if (fb->depth == 16 && regno > 63) 729 if (fb->depth == 16 && regno > 63)
700 return -EINVAL; 730 return -EINVAL;
701 if (fb->depth == 15 && regno > 31) 731 if (fb->depth == 15 && regno > 31)
702 return -EINVAL; 732 return -EINVAL;
703 733
704 if (fb->depth == 16) { 734 if (fb->depth == 16) {
705 u16 r, g, b; 735 u16 r, g, b;
706 int i; 736 int i;
707 if (regno < 32) { 737 if (regno < 32) {
708 for (i = 0; i < 8; i++) 738 for (i = 0; i < 8; i++)
709 fb_helper->funcs->gamma_set(crtc, red, 739 fb_helper->funcs->gamma_set(crtc, red,
710 green, blue, pindex + i); 740 green, blue, pindex + i);
711 } 741 }
712 742
713 fb_helper->funcs->gamma_get(crtc, &r, 743 fb_helper->funcs->gamma_get(crtc, &r,
714 &g, &b, 744 &g, &b,
715 pindex >> 1); 745 pindex >> 1);
716 746
717 for (i = 0; i < 4; i++) 747 for (i = 0; i < 4; i++)
718 fb_helper->funcs->gamma_set(crtc, r, 748 fb_helper->funcs->gamma_set(crtc, r,
719 green, b, 749 green, b,
720 (pindex >> 1) + i); 750 (pindex >> 1) + i);
721 } 751 }
722 } 752 }
723 753
724 if (fb->depth != 16) 754 if (fb->depth != 16)
725 fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); 755 fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex);
726 return 0; 756 return 0;
727 } 757 }
728 758
729 /** 759 /**
730 * drm_fb_helper_setcmap - implementation for ->fb_setcmap 760 * drm_fb_helper_setcmap - implementation for ->fb_setcmap
731 * @cmap: cmap to set 761 * @cmap: cmap to set
732 * @info: fbdev registered by the helper 762 * @info: fbdev registered by the helper
733 */ 763 */
734 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) 764 int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info)
735 { 765 {
736 struct drm_fb_helper *fb_helper = info->par; 766 struct drm_fb_helper *fb_helper = info->par;
737 struct drm_device *dev = fb_helper->dev; 767 struct drm_device *dev = fb_helper->dev;
738 struct drm_crtc_helper_funcs *crtc_funcs; 768 struct drm_crtc_helper_funcs *crtc_funcs;
739 u16 *red, *green, *blue, *transp; 769 u16 *red, *green, *blue, *transp;
740 struct drm_crtc *crtc; 770 struct drm_crtc *crtc;
741 int i, j, rc = 0; 771 int i, j, rc = 0;
742 int start; 772 int start;
743 773
744 drm_modeset_lock_all(dev); 774 drm_modeset_lock_all(dev);
745 if (!drm_fb_helper_is_bound(fb_helper)) { 775 if (!drm_fb_helper_is_bound(fb_helper)) {
746 drm_modeset_unlock_all(dev); 776 drm_modeset_unlock_all(dev);
747 return -EBUSY; 777 return -EBUSY;
748 } 778 }
749 779
750 for (i = 0; i < fb_helper->crtc_count; i++) { 780 for (i = 0; i < fb_helper->crtc_count; i++) {
751 crtc = fb_helper->crtc_info[i].mode_set.crtc; 781 crtc = fb_helper->crtc_info[i].mode_set.crtc;
752 crtc_funcs = crtc->helper_private; 782 crtc_funcs = crtc->helper_private;
753 783
754 red = cmap->red; 784 red = cmap->red;
755 green = cmap->green; 785 green = cmap->green;
756 blue = cmap->blue; 786 blue = cmap->blue;
757 transp = cmap->transp; 787 transp = cmap->transp;
758 start = cmap->start; 788 start = cmap->start;
759 789
760 for (j = 0; j < cmap->len; j++) { 790 for (j = 0; j < cmap->len; j++) {
761 u16 hred, hgreen, hblue, htransp = 0xffff; 791 u16 hred, hgreen, hblue, htransp = 0xffff;
762 792
763 hred = *red++; 793 hred = *red++;
764 hgreen = *green++; 794 hgreen = *green++;
765 hblue = *blue++; 795 hblue = *blue++;
766 796
767 if (transp) 797 if (transp)
768 htransp = *transp++; 798 htransp = *transp++;
769 799
770 rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); 800 rc = setcolreg(crtc, hred, hgreen, hblue, start++, info);
771 if (rc) 801 if (rc)
772 goto out; 802 goto out;
773 } 803 }
774 if (crtc_funcs->load_lut) 804 if (crtc_funcs->load_lut)
775 crtc_funcs->load_lut(crtc); 805 crtc_funcs->load_lut(crtc);
776 } 806 }
777 out: 807 out:
778 drm_modeset_unlock_all(dev); 808 drm_modeset_unlock_all(dev);
779 return rc; 809 return rc;
780 } 810 }
781 EXPORT_SYMBOL(drm_fb_helper_setcmap); 811 EXPORT_SYMBOL(drm_fb_helper_setcmap);
782 812
783 /** 813 /**
784 * drm_fb_helper_check_var - implementation for ->fb_check_var 814 * drm_fb_helper_check_var - implementation for ->fb_check_var
785 * @var: screeninfo to check 815 * @var: screeninfo to check
786 * @info: fbdev registered by the helper 816 * @info: fbdev registered by the helper
787 */ 817 */
788 int drm_fb_helper_check_var(struct fb_var_screeninfo *var, 818 int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
789 struct fb_info *info) 819 struct fb_info *info)
790 { 820 {
791 struct drm_fb_helper *fb_helper = info->par; 821 struct drm_fb_helper *fb_helper = info->par;
792 struct drm_framebuffer *fb = fb_helper->fb; 822 struct drm_framebuffer *fb = fb_helper->fb;
793 int depth; 823 int depth;
794 824
795 if (var->pixclock != 0 || in_dbg_master()) 825 if (var->pixclock != 0 || in_dbg_master())
796 return -EINVAL; 826 return -EINVAL;
797 827
798 /* Need to resize the fb object !!! */ 828 /* Need to resize the fb object !!! */
799 if (var->bits_per_pixel > fb->bits_per_pixel || 829 if (var->bits_per_pixel > fb->bits_per_pixel ||
800 var->xres > fb->width || var->yres > fb->height || 830 var->xres > fb->width || var->yres > fb->height ||
801 var->xres_virtual > fb->width || var->yres_virtual > fb->height) { 831 var->xres_virtual > fb->width || var->yres_virtual > fb->height) {
802 DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " 832 DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb "
803 "request %dx%d-%d (virtual %dx%d) > %dx%d-%d\n", 833 "request %dx%d-%d (virtual %dx%d) > %dx%d-%d\n",
804 var->xres, var->yres, var->bits_per_pixel, 834 var->xres, var->yres, var->bits_per_pixel,
805 var->xres_virtual, var->yres_virtual, 835 var->xres_virtual, var->yres_virtual,
806 fb->width, fb->height, fb->bits_per_pixel); 836 fb->width, fb->height, fb->bits_per_pixel);
807 return -EINVAL; 837 return -EINVAL;
808 } 838 }
809 839
810 switch (var->bits_per_pixel) { 840 switch (var->bits_per_pixel) {
811 case 16: 841 case 16:
812 depth = (var->green.length == 6) ? 16 : 15; 842 depth = (var->green.length == 6) ? 16 : 15;
813 break; 843 break;
814 case 32: 844 case 32:
815 depth = (var->transp.length > 0) ? 32 : 24; 845 depth = (var->transp.length > 0) ? 32 : 24;
816 break; 846 break;
817 default: 847 default:
818 depth = var->bits_per_pixel; 848 depth = var->bits_per_pixel;
819 break; 849 break;
820 } 850 }
821 851
822 switch (depth) { 852 switch (depth) {
823 case 8: 853 case 8:
824 var->red.offset = 0; 854 var->red.offset = 0;
825 var->green.offset = 0; 855 var->green.offset = 0;
826 var->blue.offset = 0; 856 var->blue.offset = 0;
827 var->red.length = 8; 857 var->red.length = 8;
828 var->green.length = 8; 858 var->green.length = 8;
829 var->blue.length = 8; 859 var->blue.length = 8;
830 var->transp.length = 0; 860 var->transp.length = 0;
831 var->transp.offset = 0; 861 var->transp.offset = 0;
832 break; 862 break;
833 case 15: 863 case 15:
834 var->red.offset = 10; 864 var->red.offset = 10;
835 var->green.offset = 5; 865 var->green.offset = 5;
836 var->blue.offset = 0; 866 var->blue.offset = 0;
837 var->red.length = 5; 867 var->red.length = 5;
838 var->green.length = 5; 868 var->green.length = 5;
839 var->blue.length = 5; 869 var->blue.length = 5;
840 var->transp.length = 1; 870 var->transp.length = 1;
841 var->transp.offset = 15; 871 var->transp.offset = 15;
842 break; 872 break;
843 case 16: 873 case 16:
844 var->red.offset = 11; 874 var->red.offset = 11;
845 var->green.offset = 5; 875 var->green.offset = 5;
846 var->blue.offset = 0; 876 var->blue.offset = 0;
847 var->red.length = 5; 877 var->red.length = 5;
848 var->green.length = 6; 878 var->green.length = 6;
849 var->blue.length = 5; 879 var->blue.length = 5;
850 var->transp.length = 0; 880 var->transp.length = 0;
851 var->transp.offset = 0; 881 var->transp.offset = 0;
852 break; 882 break;
853 case 24: 883 case 24:
854 var->red.offset = 16; 884 var->red.offset = 16;
855 var->green.offset = 8; 885 var->green.offset = 8;
856 var->blue.offset = 0; 886 var->blue.offset = 0;
857 var->red.length = 8; 887 var->red.length = 8;
858 var->green.length = 8; 888 var->green.length = 8;
859 var->blue.length = 8; 889 var->blue.length = 8;
860 var->transp.length = 0; 890 var->transp.length = 0;
861 var->transp.offset = 0; 891 var->transp.offset = 0;
862 break; 892 break;
863 case 32: 893 case 32:
864 var->red.offset = 16; 894 var->red.offset = 16;
865 var->green.offset = 8; 895 var->green.offset = 8;
866 var->blue.offset = 0; 896 var->blue.offset = 0;
867 var->red.length = 8; 897 var->red.length = 8;
868 var->green.length = 8; 898 var->green.length = 8;
869 var->blue.length = 8; 899 var->blue.length = 8;
870 var->transp.length = 8; 900 var->transp.length = 8;
871 var->transp.offset = 24; 901 var->transp.offset = 24;
872 break; 902 break;
873 default: 903 default:
874 return -EINVAL; 904 return -EINVAL;
875 } 905 }
876 return 0; 906 return 0;
877 } 907 }
878 EXPORT_SYMBOL(drm_fb_helper_check_var); 908 EXPORT_SYMBOL(drm_fb_helper_check_var);
879 909
880 /** 910 /**
881 * drm_fb_helper_set_par - implementation for ->fb_set_par 911 * drm_fb_helper_set_par - implementation for ->fb_set_par
882 * @info: fbdev registered by the helper 912 * @info: fbdev registered by the helper
883 * 913 *
884 * This will let fbcon do the mode init and is called at initialization time by 914 * This will let fbcon do the mode init and is called at initialization time by
885 * the fbdev core when registering the driver, and later on through the hotplug 915 * the fbdev core when registering the driver, and later on through the hotplug
886 * callback. 916 * callback.
887 */ 917 */
888 int drm_fb_helper_set_par(struct fb_info *info) 918 int drm_fb_helper_set_par(struct fb_info *info)
889 { 919 {
890 struct drm_fb_helper *fb_helper = info->par; 920 struct drm_fb_helper *fb_helper = info->par;
891 struct fb_var_screeninfo *var = &info->var; 921 struct fb_var_screeninfo *var = &info->var;
892 922
893 if (var->pixclock != 0) { 923 if (var->pixclock != 0) {
894 DRM_ERROR("PIXEL CLOCK SET\n"); 924 DRM_ERROR("PIXEL CLOCK SET\n");
895 return -EINVAL; 925 return -EINVAL;
896 } 926 }
897 927
898 drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper); 928 drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper);
899 929
900 return 0; 930 return 0;
901 } 931 }
902 EXPORT_SYMBOL(drm_fb_helper_set_par); 932 EXPORT_SYMBOL(drm_fb_helper_set_par);
903 933
904 /** 934 /**
905 * drm_fb_helper_pan_display - implementation for ->fb_pan_display 935 * drm_fb_helper_pan_display - implementation for ->fb_pan_display
906 * @var: updated screen information 936 * @var: updated screen information
907 * @info: fbdev registered by the helper 937 * @info: fbdev registered by the helper
908 */ 938 */
909 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, 939 int drm_fb_helper_pan_display(struct fb_var_screeninfo *var,
910 struct fb_info *info) 940 struct fb_info *info)
911 { 941 {
912 struct drm_fb_helper *fb_helper = info->par; 942 struct drm_fb_helper *fb_helper = info->par;
913 struct drm_device *dev = fb_helper->dev; 943 struct drm_device *dev = fb_helper->dev;
914 struct drm_mode_set *modeset; 944 struct drm_mode_set *modeset;
915 int ret = 0; 945 int ret = 0;
916 int i; 946 int i;
917 947
918 drm_modeset_lock_all(dev); 948 drm_modeset_lock_all(dev);
919 if (!drm_fb_helper_is_bound(fb_helper)) { 949 if (!drm_fb_helper_is_bound(fb_helper)) {
920 drm_modeset_unlock_all(dev); 950 drm_modeset_unlock_all(dev);
921 return -EBUSY; 951 return -EBUSY;
922 } 952 }
923 953
924 for (i = 0; i < fb_helper->crtc_count; i++) { 954 for (i = 0; i < fb_helper->crtc_count; i++) {
925 modeset = &fb_helper->crtc_info[i].mode_set; 955 modeset = &fb_helper->crtc_info[i].mode_set;
926 956
927 modeset->x = var->xoffset; 957 modeset->x = var->xoffset;
928 modeset->y = var->yoffset; 958 modeset->y = var->yoffset;
929 959
930 if (modeset->num_connectors) { 960 if (modeset->num_connectors) {
931 ret = drm_mode_set_config_internal(modeset); 961 ret = drm_mode_set_config_internal(modeset);
932 if (!ret) { 962 if (!ret) {
933 info->var.xoffset = var->xoffset; 963 info->var.xoffset = var->xoffset;
934 info->var.yoffset = var->yoffset; 964 info->var.yoffset = var->yoffset;
935 } 965 }
936 } 966 }
937 } 967 }
938 drm_modeset_unlock_all(dev); 968 drm_modeset_unlock_all(dev);
939 return ret; 969 return ret;
940 } 970 }
941 EXPORT_SYMBOL(drm_fb_helper_pan_display); 971 EXPORT_SYMBOL(drm_fb_helper_pan_display);
942 972
943 /* 973 /*
944 * Allocates the backing storage and sets up the fbdev info structure through 974 * Allocates the backing storage and sets up the fbdev info structure through
945 * the ->fb_probe callback and then registers the fbdev and sets up the panic 975 * the ->fb_probe callback and then registers the fbdev and sets up the panic
946 * notifier. 976 * notifier.
947 */ 977 */
948 static int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, 978 static int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper,
949 int preferred_bpp) 979 int preferred_bpp)
950 { 980 {
951 int ret = 0; 981 int ret = 0;
952 int crtc_count = 0; 982 int crtc_count = 0;
953 int i; 983 int i;
954 struct fb_info *info; 984 struct fb_info *info;
955 struct drm_fb_helper_surface_size sizes; 985 struct drm_fb_helper_surface_size sizes;
956 int gamma_size = 0; 986 int gamma_size = 0;
957 987
958 memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); 988 memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size));
959 sizes.surface_depth = 24; 989 sizes.surface_depth = 24;
960 sizes.surface_bpp = 32; 990 sizes.surface_bpp = 32;
961 sizes.fb_width = (unsigned)-1; 991 sizes.fb_width = (unsigned)-1;
962 sizes.fb_height = (unsigned)-1; 992 sizes.fb_height = (unsigned)-1;
963 993
964 /* if driver picks 8 or 16 by default use that 994 /* if driver picks 8 or 16 by default use that
965 for both depth/bpp */ 995 for both depth/bpp */
966 if (preferred_bpp != sizes.surface_bpp) 996 if (preferred_bpp != sizes.surface_bpp)
967 sizes.surface_depth = sizes.surface_bpp = preferred_bpp; 997 sizes.surface_depth = sizes.surface_bpp = preferred_bpp;
968 998
969 /* first up get a count of crtcs now in use and new min/maxes width/heights */ 999 /* first up get a count of crtcs now in use and new min/maxes width/heights */
970 for (i = 0; i < fb_helper->connector_count; i++) { 1000 for (i = 0; i < fb_helper->connector_count; i++) {
971 struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; 1001 struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i];
972 struct drm_cmdline_mode *cmdline_mode; 1002 struct drm_cmdline_mode *cmdline_mode;
973 1003
974 cmdline_mode = &fb_helper_conn->connector->cmdline_mode; 1004 cmdline_mode = &fb_helper_conn->connector->cmdline_mode;
975 1005
976 if (cmdline_mode->bpp_specified) { 1006 if (cmdline_mode->bpp_specified) {
977 switch (cmdline_mode->bpp) { 1007 switch (cmdline_mode->bpp) {
978 case 8: 1008 case 8:
979 sizes.surface_depth = sizes.surface_bpp = 8; 1009 sizes.surface_depth = sizes.surface_bpp = 8;
980 break; 1010 break;
981 case 15: 1011 case 15:
982 sizes.surface_depth = 15; 1012 sizes.surface_depth = 15;
983 sizes.surface_bpp = 16; 1013 sizes.surface_bpp = 16;
984 break; 1014 break;
985 case 16: 1015 case 16:
986 sizes.surface_depth = sizes.surface_bpp = 16; 1016 sizes.surface_depth = sizes.surface_bpp = 16;
987 break; 1017 break;
988 case 24: 1018 case 24:
989 sizes.surface_depth = sizes.surface_bpp = 24; 1019 sizes.surface_depth = sizes.surface_bpp = 24;
990 break; 1020 break;
991 case 32: 1021 case 32:
992 sizes.surface_depth = 24; 1022 sizes.surface_depth = 24;
993 sizes.surface_bpp = 32; 1023 sizes.surface_bpp = 32;
994 break; 1024 break;
995 } 1025 }
996 break; 1026 break;
997 } 1027 }
998 } 1028 }
999 1029
1000 crtc_count = 0; 1030 crtc_count = 0;
1001 for (i = 0; i < fb_helper->crtc_count; i++) { 1031 for (i = 0; i < fb_helper->crtc_count; i++) {
1002 struct drm_display_mode *desired_mode; 1032 struct drm_display_mode *desired_mode;
1003 desired_mode = fb_helper->crtc_info[i].desired_mode; 1033 desired_mode = fb_helper->crtc_info[i].desired_mode;
1004 1034
1005 if (desired_mode) { 1035 if (desired_mode) {
1006 if (gamma_size == 0) 1036 if (gamma_size == 0)
1007 gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; 1037 gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size;
1008 if (desired_mode->hdisplay < sizes.fb_width) 1038 if (desired_mode->hdisplay < sizes.fb_width)
1009 sizes.fb_width = desired_mode->hdisplay; 1039 sizes.fb_width = desired_mode->hdisplay;
1010 if (desired_mode->vdisplay < sizes.fb_height) 1040 if (desired_mode->vdisplay < sizes.fb_height)
1011 sizes.fb_height = desired_mode->vdisplay; 1041 sizes.fb_height = desired_mode->vdisplay;
1012 if (desired_mode->hdisplay > sizes.surface_width) 1042 if (desired_mode->hdisplay > sizes.surface_width)
1013 sizes.surface_width = desired_mode->hdisplay; 1043 sizes.surface_width = desired_mode->hdisplay;
1014 if (desired_mode->vdisplay > sizes.surface_height) 1044 if (desired_mode->vdisplay > sizes.surface_height)
1015 sizes.surface_height = desired_mode->vdisplay; 1045 sizes.surface_height = desired_mode->vdisplay;
1016 crtc_count++; 1046 crtc_count++;
1017 } 1047 }
1018 } 1048 }
1019 1049
1020 if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { 1050 if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) {
1021 /* hmm everyone went away - assume VGA cable just fell out 1051 /* hmm everyone went away - assume VGA cable just fell out
1022 and will come back later. */ 1052 and will come back later. */
1023 DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); 1053 DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n");
1024 sizes.fb_width = sizes.surface_width = 1024; 1054 sizes.fb_width = sizes.surface_width = 1024;
1025 sizes.fb_height = sizes.surface_height = 768; 1055 sizes.fb_height = sizes.surface_height = 768;
1026 } 1056 }
1027 1057
1028 /* push down into drivers */ 1058 /* push down into drivers */
1029 ret = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); 1059 ret = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes);
1030 if (ret < 0) 1060 if (ret < 0)
1031 return ret; 1061 return ret;
1032 1062
1033 info = fb_helper->fbdev; 1063 info = fb_helper->fbdev;
1034 1064
1035 /* 1065 /*
1036 * Set the fb pointer - usually drm_setup_crtcs does this for hotplug 1066 * Set the fb pointer - usually drm_setup_crtcs does this for hotplug
1037 * events, but at init time drm_setup_crtcs needs to be called before 1067 * events, but at init time drm_setup_crtcs needs to be called before
1038 * the fb is allocated (since we need to figure out the desired size of 1068 * the fb is allocated (since we need to figure out the desired size of
1039 * the fb before we can allocate it ...). Hence we need to fix things up 1069 * the fb before we can allocate it ...). Hence we need to fix things up
1040 * here again. 1070 * here again.
1041 */ 1071 */
1042 for (i = 0; i < fb_helper->crtc_count; i++) 1072 for (i = 0; i < fb_helper->crtc_count; i++)
1043 if (fb_helper->crtc_info[i].mode_set.num_connectors) 1073 if (fb_helper->crtc_info[i].mode_set.num_connectors)
1044 fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; 1074 fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb;
1045 1075
1046 1076
1047 info->var.pixclock = 0; 1077 info->var.pixclock = 0;
1048 if (register_framebuffer(info) < 0) 1078 if (register_framebuffer(info) < 0)
1049 return -EINVAL; 1079 return -EINVAL;
1050 1080
1051 dev_info(fb_helper->dev->dev, "fb%d: %s frame buffer device\n", 1081 dev_info(fb_helper->dev->dev, "fb%d: %s frame buffer device\n",
1052 info->node, info->fix.id); 1082 info->node, info->fix.id);
1053 1083
1054 /* Switch back to kernel console on panic */ 1084 /* Switch back to kernel console on panic */
1055 /* multi card linked list maybe */ 1085 /* multi card linked list maybe */
1056 if (list_empty(&kernel_fb_helper_list)) { 1086 if (list_empty(&kernel_fb_helper_list)) {
1057 dev_info(fb_helper->dev->dev, "registered panic notifier\n"); 1087 dev_info(fb_helper->dev->dev, "registered panic notifier\n");
1058 atomic_notifier_chain_register(&panic_notifier_list, 1088 atomic_notifier_chain_register(&panic_notifier_list,
1059 &paniced); 1089 &paniced);
1060 register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); 1090 register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op);
1061 } 1091 }
1062 1092
1063 list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); 1093 list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list);
1064 1094
1065 return 0; 1095 return 0;
1066 } 1096 }
1067 1097
1068 /** 1098 /**
1069 * drm_fb_helper_fill_fix - initializes fixed fbdev information 1099 * drm_fb_helper_fill_fix - initializes fixed fbdev information
1070 * @info: fbdev registered by the helper 1100 * @info: fbdev registered by the helper
1071 * @pitch: desired pitch 1101 * @pitch: desired pitch
1072 * @depth: desired depth 1102 * @depth: desired depth
1073 * 1103 *
1074 * Helper to fill in the fixed fbdev information useful for a non-accelerated 1104 * Helper to fill in the fixed fbdev information useful for a non-accelerated
1075 * fbdev emulations. Drivers which support acceleration methods which impose 1105 * fbdev emulations. Drivers which support acceleration methods which impose
1076 * additional constraints need to set up their own limits. 1106 * additional constraints need to set up their own limits.
1077 * 1107 *
1078 * Drivers should call this (or their equivalent setup code) from their 1108 * Drivers should call this (or their equivalent setup code) from their
1079 * ->fb_probe callback. 1109 * ->fb_probe callback.
1080 */ 1110 */
1081 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, 1111 void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch,
1082 uint32_t depth) 1112 uint32_t depth)
1083 { 1113 {
1084 info->fix.type = FB_TYPE_PACKED_PIXELS; 1114 info->fix.type = FB_TYPE_PACKED_PIXELS;
1085 info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : 1115 info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR :
1086 FB_VISUAL_TRUECOLOR; 1116 FB_VISUAL_TRUECOLOR;
1087 info->fix.mmio_start = 0; 1117 info->fix.mmio_start = 0;
1088 info->fix.mmio_len = 0; 1118 info->fix.mmio_len = 0;
1089 info->fix.type_aux = 0; 1119 info->fix.type_aux = 0;
1090 info->fix.xpanstep = 1; /* doing it in hw */ 1120 info->fix.xpanstep = 1; /* doing it in hw */
1091 info->fix.ypanstep = 1; /* doing it in hw */ 1121 info->fix.ypanstep = 1; /* doing it in hw */
1092 info->fix.ywrapstep = 0; 1122 info->fix.ywrapstep = 0;
1093 info->fix.accel = FB_ACCEL_NONE; 1123 info->fix.accel = FB_ACCEL_NONE;
1094 1124
1095 info->fix.line_length = pitch; 1125 info->fix.line_length = pitch;
1096 return; 1126 return;
1097 } 1127 }
1098 EXPORT_SYMBOL(drm_fb_helper_fill_fix); 1128 EXPORT_SYMBOL(drm_fb_helper_fill_fix);
1099 1129
1100 /** 1130 /**
1101 * drm_fb_helper_fill_var - initalizes variable fbdev information 1131 * drm_fb_helper_fill_var - initalizes variable fbdev information
1102 * @info: fbdev instance to set up 1132 * @info: fbdev instance to set up
1103 * @fb_helper: fb helper instance to use as template 1133 * @fb_helper: fb helper instance to use as template
1104 * @fb_width: desired fb width 1134 * @fb_width: desired fb width
1105 * @fb_height: desired fb height 1135 * @fb_height: desired fb height
1106 * 1136 *
1107 * Sets up the variable fbdev metainformation from the given fb helper instance 1137 * Sets up the variable fbdev metainformation from the given fb helper instance
1108 * and the drm framebuffer allocated in fb_helper->fb. 1138 * and the drm framebuffer allocated in fb_helper->fb.
1109 * 1139 *
1110 * Drivers should call this (or their equivalent setup code) from their 1140 * Drivers should call this (or their equivalent setup code) from their
1111 * ->fb_probe callback after having allocated the fbdev backing 1141 * ->fb_probe callback after having allocated the fbdev backing
1112 * storage framebuffer. 1142 * storage framebuffer.
1113 */ 1143 */
1114 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, 1144 void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper,
1115 uint32_t fb_width, uint32_t fb_height) 1145 uint32_t fb_width, uint32_t fb_height)
1116 { 1146 {
1117 struct drm_framebuffer *fb = fb_helper->fb; 1147 struct drm_framebuffer *fb = fb_helper->fb;
1118 info->pseudo_palette = fb_helper->pseudo_palette; 1148 info->pseudo_palette = fb_helper->pseudo_palette;
1119 info->var.xres_virtual = fb->width; 1149 info->var.xres_virtual = fb->width;
1120 info->var.yres_virtual = fb->height; 1150 info->var.yres_virtual = fb->height;
1121 info->var.bits_per_pixel = fb->bits_per_pixel; 1151 info->var.bits_per_pixel = fb->bits_per_pixel;
1122 info->var.accel_flags = FB_ACCELF_TEXT; 1152 info->var.accel_flags = FB_ACCELF_TEXT;
1123 info->var.xoffset = 0; 1153 info->var.xoffset = 0;
1124 info->var.yoffset = 0; 1154 info->var.yoffset = 0;
1125 info->var.activate = FB_ACTIVATE_NOW; 1155 info->var.activate = FB_ACTIVATE_NOW;
1126 info->var.height = -1; 1156 info->var.height = -1;
1127 info->var.width = -1; 1157 info->var.width = -1;
1128 1158
1129 switch (fb->depth) { 1159 switch (fb->depth) {
1130 case 8: 1160 case 8:
1131 info->var.red.offset = 0; 1161 info->var.red.offset = 0;
1132 info->var.green.offset = 0; 1162 info->var.green.offset = 0;
1133 info->var.blue.offset = 0; 1163 info->var.blue.offset = 0;
1134 info->var.red.length = 8; /* 8bit DAC */ 1164 info->var.red.length = 8; /* 8bit DAC */
1135 info->var.green.length = 8; 1165 info->var.green.length = 8;
1136 info->var.blue.length = 8; 1166 info->var.blue.length = 8;
1137 info->var.transp.offset = 0; 1167 info->var.transp.offset = 0;
1138 info->var.transp.length = 0; 1168 info->var.transp.length = 0;
1139 break; 1169 break;
1140 case 15: 1170 case 15:
1141 info->var.red.offset = 10; 1171 info->var.red.offset = 10;
1142 info->var.green.offset = 5; 1172 info->var.green.offset = 5;
1143 info->var.blue.offset = 0; 1173 info->var.blue.offset = 0;
1144 info->var.red.length = 5; 1174 info->var.red.length = 5;
1145 info->var.green.length = 5; 1175 info->var.green.length = 5;
1146 info->var.blue.length = 5; 1176 info->var.blue.length = 5;
1147 info->var.transp.offset = 15; 1177 info->var.transp.offset = 15;
1148 info->var.transp.length = 1; 1178 info->var.transp.length = 1;
1149 break; 1179 break;
1150 case 16: 1180 case 16:
1151 info->var.red.offset = 11; 1181 info->var.red.offset = 11;
1152 info->var.green.offset = 5; 1182 info->var.green.offset = 5;
1153 info->var.blue.offset = 0; 1183 info->var.blue.offset = 0;
1154 info->var.red.length = 5; 1184 info->var.red.length = 5;
1155 info->var.green.length = 6; 1185 info->var.green.length = 6;
1156 info->var.blue.length = 5; 1186 info->var.blue.length = 5;
1157 info->var.transp.offset = 0; 1187 info->var.transp.offset = 0;
1158 break; 1188 break;
1159 case 24: 1189 case 24:
1160 info->var.red.offset = 16; 1190 info->var.red.offset = 16;
1161 info->var.green.offset = 8; 1191 info->var.green.offset = 8;
1162 info->var.blue.offset = 0; 1192 info->var.blue.offset = 0;
1163 info->var.red.length = 8; 1193 info->var.red.length = 8;
1164 info->var.green.length = 8; 1194 info->var.green.length = 8;
1165 info->var.blue.length = 8; 1195 info->var.blue.length = 8;
1166 info->var.transp.offset = 0; 1196 info->var.transp.offset = 0;
1167 info->var.transp.length = 0; 1197 info->var.transp.length = 0;
1168 break; 1198 break;
1169 case 32: 1199 case 32:
1170 info->var.red.offset = 16; 1200 info->var.red.offset = 16;
1171 info->var.green.offset = 8; 1201 info->var.green.offset = 8;
1172 info->var.blue.offset = 0; 1202 info->var.blue.offset = 0;
1173 info->var.red.length = 8; 1203 info->var.red.length = 8;
1174 info->var.green.length = 8; 1204 info->var.green.length = 8;
1175 info->var.blue.length = 8; 1205 info->var.blue.length = 8;
1176 info->var.transp.offset = 24; 1206 info->var.transp.offset = 24;
1177 info->var.transp.length = 8; 1207 info->var.transp.length = 8;
1178 break; 1208 break;
1179 default: 1209 default:
1180 break; 1210 break;
1181 } 1211 }
1182 1212
1183 info->var.xres = fb_width; 1213 info->var.xres = fb_width;
1184 info->var.yres = fb_height; 1214 info->var.yres = fb_height;
1185 } 1215 }
1186 EXPORT_SYMBOL(drm_fb_helper_fill_var); 1216 EXPORT_SYMBOL(drm_fb_helper_fill_var);
1187 1217
1188 static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, 1218 static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper,
1189 uint32_t maxX, 1219 uint32_t maxX,
1190 uint32_t maxY) 1220 uint32_t maxY)
1191 { 1221 {
1192 struct drm_connector *connector; 1222 struct drm_connector *connector;
1193 int count = 0; 1223 int count = 0;
1194 int i; 1224 int i;
1195 1225
1196 for (i = 0; i < fb_helper->connector_count; i++) { 1226 for (i = 0; i < fb_helper->connector_count; i++) {
1197 connector = fb_helper->connector_info[i]->connector; 1227 connector = fb_helper->connector_info[i]->connector;
1198 count += connector->funcs->fill_modes(connector, maxX, maxY); 1228 count += connector->funcs->fill_modes(connector, maxX, maxY);
1199 } 1229 }
1200 1230
1201 return count; 1231 return count;
1202 } 1232 }
1203 1233
1204 struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) 1234 struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height)
1205 { 1235 {
1206 struct drm_display_mode *mode; 1236 struct drm_display_mode *mode;
1207 1237
1208 list_for_each_entry(mode, &fb_connector->connector->modes, head) { 1238 list_for_each_entry(mode, &fb_connector->connector->modes, head) {
1209 if (mode->hdisplay > width || 1239 if (mode->hdisplay > width ||
1210 mode->vdisplay > height) 1240 mode->vdisplay > height)
1211 continue; 1241 continue;
1212 if (mode->type & DRM_MODE_TYPE_PREFERRED) 1242 if (mode->type & DRM_MODE_TYPE_PREFERRED)
1213 return mode; 1243 return mode;
1214 } 1244 }
1215 return NULL; 1245 return NULL;
1216 } 1246 }
1217 EXPORT_SYMBOL(drm_has_preferred_mode); 1247 EXPORT_SYMBOL(drm_has_preferred_mode);
1218 1248
1219 static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) 1249 static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector)
1220 { 1250 {
1221 return fb_connector->connector->cmdline_mode.specified; 1251 return fb_connector->connector->cmdline_mode.specified;
1222 } 1252 }
1223 1253
1224 struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, 1254 struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn,
1225 int width, int height) 1255 int width, int height)
1226 { 1256 {
1227 struct drm_cmdline_mode *cmdline_mode; 1257 struct drm_cmdline_mode *cmdline_mode;
1228 struct drm_display_mode *mode = NULL; 1258 struct drm_display_mode *mode = NULL;
1229 bool prefer_non_interlace; 1259 bool prefer_non_interlace;
1230 1260
1231 cmdline_mode = &fb_helper_conn->connector->cmdline_mode; 1261 cmdline_mode = &fb_helper_conn->connector->cmdline_mode;
1232 if (cmdline_mode->specified == false) 1262 if (cmdline_mode->specified == false)
1233 return mode; 1263 return mode;
1234 1264
1235 /* attempt to find a matching mode in the list of modes 1265 /* attempt to find a matching mode in the list of modes
1236 * we have gotten so far, if not add a CVT mode that conforms 1266 * we have gotten so far, if not add a CVT mode that conforms
1237 */ 1267 */
1238 if (cmdline_mode->rb || cmdline_mode->margins) 1268 if (cmdline_mode->rb || cmdline_mode->margins)
1239 goto create_mode; 1269 goto create_mode;
1240 1270
1241 prefer_non_interlace = !cmdline_mode->interlace; 1271 prefer_non_interlace = !cmdline_mode->interlace;
1242 again: 1272 again:
1243 list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { 1273 list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) {
1244 /* check width/height */ 1274 /* check width/height */
1245 if (mode->hdisplay != cmdline_mode->xres || 1275 if (mode->hdisplay != cmdline_mode->xres ||
1246 mode->vdisplay != cmdline_mode->yres) 1276 mode->vdisplay != cmdline_mode->yres)
1247 continue; 1277 continue;
1248 1278
1249 if (cmdline_mode->refresh_specified) { 1279 if (cmdline_mode->refresh_specified) {
1250 if (mode->vrefresh != cmdline_mode->refresh) 1280 if (mode->vrefresh != cmdline_mode->refresh)
1251 continue; 1281 continue;
1252 } 1282 }
1253 1283
1254 if (cmdline_mode->interlace) { 1284 if (cmdline_mode->interlace) {
1255 if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) 1285 if (!(mode->flags & DRM_MODE_FLAG_INTERLACE))
1256 continue; 1286 continue;
1257 } else if (prefer_non_interlace) { 1287 } else if (prefer_non_interlace) {
1258 if (mode->flags & DRM_MODE_FLAG_INTERLACE) 1288 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
1259 continue; 1289 continue;
1260 } 1290 }
1261 return mode; 1291 return mode;
1262 } 1292 }
1263 1293
1264 if (prefer_non_interlace) { 1294 if (prefer_non_interlace) {
1265 prefer_non_interlace = false; 1295 prefer_non_interlace = false;
1266 goto again; 1296 goto again;
1267 } 1297 }
1268 1298
1269 create_mode: 1299 create_mode:
1270 mode = drm_mode_create_from_cmdline_mode(fb_helper_conn->connector->dev, 1300 mode = drm_mode_create_from_cmdline_mode(fb_helper_conn->connector->dev,
1271 cmdline_mode); 1301 cmdline_mode);
1272 list_add(&mode->head, &fb_helper_conn->connector->modes); 1302 list_add(&mode->head, &fb_helper_conn->connector->modes);
1273 return mode; 1303 return mode;
1274 } 1304 }
1275 EXPORT_SYMBOL(drm_pick_cmdline_mode); 1305 EXPORT_SYMBOL(drm_pick_cmdline_mode);
1276 1306
1277 static bool drm_connector_enabled(struct drm_connector *connector, bool strict) 1307 static bool drm_connector_enabled(struct drm_connector *connector, bool strict)
1278 { 1308 {
1279 bool enable; 1309 bool enable;
1280 1310
1281 if (strict) 1311 if (strict)
1282 enable = connector->status == connector_status_connected; 1312 enable = connector->status == connector_status_connected;
1283 else 1313 else
1284 enable = connector->status != connector_status_disconnected; 1314 enable = connector->status != connector_status_disconnected;
1285 1315
1286 return enable; 1316 return enable;
1287 } 1317 }
1288 1318
1289 static void drm_enable_connectors(struct drm_fb_helper *fb_helper, 1319 static void drm_enable_connectors(struct drm_fb_helper *fb_helper,
1290 bool *enabled) 1320 bool *enabled)
1291 { 1321 {
1292 bool any_enabled = false; 1322 bool any_enabled = false;
1293 struct drm_connector *connector; 1323 struct drm_connector *connector;
1294 int i = 0; 1324 int i = 0;
1295 1325
1296 for (i = 0; i < fb_helper->connector_count; i++) { 1326 for (i = 0; i < fb_helper->connector_count; i++) {
1297 connector = fb_helper->connector_info[i]->connector; 1327 connector = fb_helper->connector_info[i]->connector;
1298 enabled[i] = drm_connector_enabled(connector, true); 1328 enabled[i] = drm_connector_enabled(connector, true);
1299 DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, 1329 DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id,
1300 enabled[i] ? "yes" : "no"); 1330 enabled[i] ? "yes" : "no");
1301 any_enabled |= enabled[i]; 1331 any_enabled |= enabled[i];
1302 } 1332 }
1303 1333
1304 if (any_enabled) 1334 if (any_enabled)
1305 return; 1335 return;
1306 1336
1307 for (i = 0; i < fb_helper->connector_count; i++) { 1337 for (i = 0; i < fb_helper->connector_count; i++) {
1308 connector = fb_helper->connector_info[i]->connector; 1338 connector = fb_helper->connector_info[i]->connector;
1309 enabled[i] = drm_connector_enabled(connector, false); 1339 enabled[i] = drm_connector_enabled(connector, false);
1310 } 1340 }
1311 } 1341 }
1312 1342
1313 static bool drm_target_cloned(struct drm_fb_helper *fb_helper, 1343 static bool drm_target_cloned(struct drm_fb_helper *fb_helper,
1314 struct drm_display_mode **modes, 1344 struct drm_display_mode **modes,
1315 bool *enabled, int width, int height) 1345 bool *enabled, int width, int height)
1316 { 1346 {
1317 int count, i, j; 1347 int count, i, j;
1318 bool can_clone = false; 1348 bool can_clone = false;
1319 struct drm_fb_helper_connector *fb_helper_conn; 1349 struct drm_fb_helper_connector *fb_helper_conn;
1320 struct drm_display_mode *dmt_mode, *mode; 1350 struct drm_display_mode *dmt_mode, *mode;
1321 1351
1322 /* only contemplate cloning in the single crtc case */ 1352 /* only contemplate cloning in the single crtc case */
1323 if (fb_helper->crtc_count > 1) 1353 if (fb_helper->crtc_count > 1)
1324 return false; 1354 return false;
1325 1355
1326 count = 0; 1356 count = 0;
1327 for (i = 0; i < fb_helper->connector_count; i++) { 1357 for (i = 0; i < fb_helper->connector_count; i++) {
1328 if (enabled[i]) 1358 if (enabled[i])
1329 count++; 1359 count++;
1330 } 1360 }
1331 1361
1332 /* only contemplate cloning if more than one connector is enabled */ 1362 /* only contemplate cloning if more than one connector is enabled */
1333 if (count <= 1) 1363 if (count <= 1)
1334 return false; 1364 return false;
1335 1365
1336 /* check the command line or if nothing common pick 1024x768 */ 1366 /* check the command line or if nothing common pick 1024x768 */
1337 can_clone = true; 1367 can_clone = true;
1338 for (i = 0; i < fb_helper->connector_count; i++) { 1368 for (i = 0; i < fb_helper->connector_count; i++) {
1339 if (!enabled[i]) 1369 if (!enabled[i])
1340 continue; 1370 continue;
1341 fb_helper_conn = fb_helper->connector_info[i]; 1371 fb_helper_conn = fb_helper->connector_info[i];
1342 modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); 1372 modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height);
1343 if (!modes[i]) { 1373 if (!modes[i]) {
1344 can_clone = false; 1374 can_clone = false;
1345 break; 1375 break;
1346 } 1376 }
1347 for (j = 0; j < i; j++) { 1377 for (j = 0; j < i; j++) {
1348 if (!enabled[j]) 1378 if (!enabled[j])
1349 continue; 1379 continue;
1350 if (!drm_mode_equal(modes[j], modes[i])) 1380 if (!drm_mode_equal(modes[j], modes[i]))
1351 can_clone = false; 1381 can_clone = false;
1352 } 1382 }
1353 } 1383 }
1354 1384
1355 if (can_clone) { 1385 if (can_clone) {
1356 DRM_DEBUG_KMS("can clone using command line\n"); 1386 DRM_DEBUG_KMS("can clone using command line\n");
1357 return true; 1387 return true;
1358 } 1388 }
1359 1389
1360 /* try and find a 1024x768 mode on each connector */ 1390 /* try and find a 1024x768 mode on each connector */
1361 can_clone = true; 1391 can_clone = true;
1362 dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60, false); 1392 dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60, false);
1363 1393
1364 for (i = 0; i < fb_helper->connector_count; i++) { 1394 for (i = 0; i < fb_helper->connector_count; i++) {
1365 1395
1366 if (!enabled[i]) 1396 if (!enabled[i])
1367 continue; 1397 continue;
1368 1398
1369 fb_helper_conn = fb_helper->connector_info[i]; 1399 fb_helper_conn = fb_helper->connector_info[i];
1370 list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { 1400 list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) {
1371 if (drm_mode_equal(mode, dmt_mode)) 1401 if (drm_mode_equal(mode, dmt_mode))
1372 modes[i] = mode; 1402 modes[i] = mode;
1373 } 1403 }
1374 if (!modes[i]) 1404 if (!modes[i])
1375 can_clone = false; 1405 can_clone = false;
1376 } 1406 }
1377 1407
1378 if (can_clone) { 1408 if (can_clone) {
1379 DRM_DEBUG_KMS("can clone using 1024x768\n"); 1409 DRM_DEBUG_KMS("can clone using 1024x768\n");
1380 return true; 1410 return true;
1381 } 1411 }
1382 DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); 1412 DRM_INFO("kms: can't enable cloning when we probably wanted to.\n");
1383 return false; 1413 return false;
1384 } 1414 }
1385 1415
1386 static bool drm_target_preferred(struct drm_fb_helper *fb_helper, 1416 static bool drm_target_preferred(struct drm_fb_helper *fb_helper,
1387 struct drm_display_mode **modes, 1417 struct drm_display_mode **modes,
1388 bool *enabled, int width, int height) 1418 bool *enabled, int width, int height)
1389 { 1419 {
1390 struct drm_fb_helper_connector *fb_helper_conn; 1420 struct drm_fb_helper_connector *fb_helper_conn;
1391 int i; 1421 int i;
1392 1422
1393 for (i = 0; i < fb_helper->connector_count; i++) { 1423 for (i = 0; i < fb_helper->connector_count; i++) {
1394 fb_helper_conn = fb_helper->connector_info[i]; 1424 fb_helper_conn = fb_helper->connector_info[i];
1395 1425
1396 if (enabled[i] == false) 1426 if (enabled[i] == false)
1397 continue; 1427 continue;
1398 1428
1399 DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", 1429 DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n",
1400 fb_helper_conn->connector->base.id); 1430 fb_helper_conn->connector->base.id);
1401 1431
1402 /* got for command line mode first */ 1432 /* got for command line mode first */
1403 modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); 1433 modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height);
1404 if (!modes[i]) { 1434 if (!modes[i]) {
1405 DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", 1435 DRM_DEBUG_KMS("looking for preferred mode on connector %d\n",
1406 fb_helper_conn->connector->base.id); 1436 fb_helper_conn->connector->base.id);
1407 modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); 1437 modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height);
1408 } 1438 }
1409 /* No preferred modes, pick one off the list */ 1439 /* No preferred modes, pick one off the list */
1410 if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { 1440 if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) {
1411 list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) 1441 list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head)
1412 break; 1442 break;
1413 } 1443 }
1414 DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : 1444 DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name :
1415 "none"); 1445 "none");
1416 } 1446 }
1417 return true; 1447 return true;
1418 } 1448 }
1419 1449
1420 static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, 1450 static int drm_pick_crtcs(struct drm_fb_helper *fb_helper,
1421 struct drm_fb_helper_crtc **best_crtcs, 1451 struct drm_fb_helper_crtc **best_crtcs,
1422 struct drm_display_mode **modes, 1452 struct drm_display_mode **modes,
1423 int n, int width, int height) 1453 int n, int width, int height)
1424 { 1454 {
1425 int c, o; 1455 int c, o;
1426 struct drm_device *dev = fb_helper->dev; 1456 struct drm_device *dev = fb_helper->dev;
1427 struct drm_connector *connector; 1457 struct drm_connector *connector;
1428 struct drm_connector_helper_funcs *connector_funcs; 1458 struct drm_connector_helper_funcs *connector_funcs;
1429 struct drm_encoder *encoder; 1459 struct drm_encoder *encoder;
1430 int my_score, best_score, score; 1460 int my_score, best_score, score;
1431 struct drm_fb_helper_crtc **crtcs, *crtc; 1461 struct drm_fb_helper_crtc **crtcs, *crtc;
1432 struct drm_fb_helper_connector *fb_helper_conn; 1462 struct drm_fb_helper_connector *fb_helper_conn;
1433 1463
1434 if (n == fb_helper->connector_count) 1464 if (n == fb_helper->connector_count)
1435 return 0; 1465 return 0;
1436 1466
1437 fb_helper_conn = fb_helper->connector_info[n]; 1467 fb_helper_conn = fb_helper->connector_info[n];
1438 connector = fb_helper_conn->connector; 1468 connector = fb_helper_conn->connector;
1439 1469
1440 best_crtcs[n] = NULL; 1470 best_crtcs[n] = NULL;
1441 best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); 1471 best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height);
1442 if (modes[n] == NULL) 1472 if (modes[n] == NULL)
1443 return best_score; 1473 return best_score;
1444 1474
1445 crtcs = kzalloc(dev->mode_config.num_connector * 1475 crtcs = kzalloc(dev->mode_config.num_connector *
1446 sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); 1476 sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL);
1447 if (!crtcs) 1477 if (!crtcs)
1448 return best_score; 1478 return best_score;
1449 1479
1450 my_score = 1; 1480 my_score = 1;
1451 if (connector->status == connector_status_connected) 1481 if (connector->status == connector_status_connected)
1452 my_score++; 1482 my_score++;
1453 if (drm_has_cmdline_mode(fb_helper_conn)) 1483 if (drm_has_cmdline_mode(fb_helper_conn))
1454 my_score++; 1484 my_score++;
1455 if (drm_has_preferred_mode(fb_helper_conn, width, height)) 1485 if (drm_has_preferred_mode(fb_helper_conn, width, height))
1456 my_score++; 1486 my_score++;
1457 1487
1458 connector_funcs = connector->helper_private; 1488 connector_funcs = connector->helper_private;
1459 encoder = connector_funcs->best_encoder(connector); 1489 encoder = connector_funcs->best_encoder(connector);
1460 if (!encoder) 1490 if (!encoder)
1461 goto out; 1491 goto out;
1462 1492
1463 /* select a crtc for this connector and then attempt to configure 1493 /* select a crtc for this connector and then attempt to configure
1464 remaining connectors */ 1494 remaining connectors */
1465 for (c = 0; c < fb_helper->crtc_count; c++) { 1495 for (c = 0; c < fb_helper->crtc_count; c++) {
1466 crtc = &fb_helper->crtc_info[c]; 1496 crtc = &fb_helper->crtc_info[c];
1467 1497
1468 if ((encoder->possible_crtcs & (1 << c)) == 0) 1498 if ((encoder->possible_crtcs & (1 << c)) == 0)
1469 continue; 1499 continue;
1470 1500
1471 for (o = 0; o < n; o++) 1501 for (o = 0; o < n; o++)
1472 if (best_crtcs[o] == crtc) 1502 if (best_crtcs[o] == crtc)
1473 break; 1503 break;
1474 1504
1475 if (o < n) { 1505 if (o < n) {
1476 /* ignore cloning unless only a single crtc */ 1506 /* ignore cloning unless only a single crtc */
1477 if (fb_helper->crtc_count > 1) 1507 if (fb_helper->crtc_count > 1)
1478 continue; 1508 continue;
1479 1509
1480 if (!drm_mode_equal(modes[o], modes[n])) 1510 if (!drm_mode_equal(modes[o], modes[n]))
1481 continue; 1511 continue;
1482 } 1512 }
1483 1513
1484 crtcs[n] = crtc; 1514 crtcs[n] = crtc;
1485 memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); 1515 memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *));
1486 score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, 1516 score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1,
1487 width, height); 1517 width, height);
1488 if (score > best_score) { 1518 if (score > best_score) {
1489 best_score = score; 1519 best_score = score;
1490 memcpy(best_crtcs, crtcs, 1520 memcpy(best_crtcs, crtcs,
1491 dev->mode_config.num_connector * 1521 dev->mode_config.num_connector *
1492 sizeof(struct drm_fb_helper_crtc *)); 1522 sizeof(struct drm_fb_helper_crtc *));
1493 } 1523 }
1494 } 1524 }
1495 out: 1525 out:
1496 kfree(crtcs); 1526 kfree(crtcs);
1497 return best_score; 1527 return best_score;
1498 } 1528 }
1499 1529
1500 static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) 1530 static void drm_setup_crtcs(struct drm_fb_helper *fb_helper)
1501 { 1531 {
1502 struct drm_device *dev = fb_helper->dev; 1532 struct drm_device *dev = fb_helper->dev;
1503 struct drm_fb_helper_crtc **crtcs; 1533 struct drm_fb_helper_crtc **crtcs;
1504 struct drm_display_mode **modes; 1534 struct drm_display_mode **modes;
1505 struct drm_mode_set *modeset; 1535 struct drm_mode_set *modeset;
1506 bool *enabled; 1536 bool *enabled;
1507 int width, height; 1537 int width, height;
1508 int i; 1538 int i;
1509 1539
1510 DRM_DEBUG_KMS("\n"); 1540 DRM_DEBUG_KMS("\n");
1511 1541
1512 width = dev->mode_config.max_width; 1542 width = dev->mode_config.max_width;
1513 height = dev->mode_config.max_height; 1543 height = dev->mode_config.max_height;
1514 1544
1515 crtcs = kcalloc(dev->mode_config.num_connector, 1545 crtcs = kcalloc(dev->mode_config.num_connector,
1516 sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); 1546 sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL);
1517 modes = kcalloc(dev->mode_config.num_connector, 1547 modes = kcalloc(dev->mode_config.num_connector,
1518 sizeof(struct drm_display_mode *), GFP_KERNEL); 1548 sizeof(struct drm_display_mode *), GFP_KERNEL);
1519 enabled = kcalloc(dev->mode_config.num_connector, 1549 enabled = kcalloc(dev->mode_config.num_connector,
1520 sizeof(bool), GFP_KERNEL); 1550 sizeof(bool), GFP_KERNEL);
1521 if (!crtcs || !modes || !enabled) { 1551 if (!crtcs || !modes || !enabled) {
1522 DRM_ERROR("Memory allocation failed\n"); 1552 DRM_ERROR("Memory allocation failed\n");
1523 goto out; 1553 goto out;
1524 } 1554 }
1525 1555
1526 1556
1527 drm_enable_connectors(fb_helper, enabled); 1557 drm_enable_connectors(fb_helper, enabled);
1528 1558
1529 if (!(fb_helper->funcs->initial_config && 1559 if (!(fb_helper->funcs->initial_config &&
1530 fb_helper->funcs->initial_config(fb_helper, crtcs, modes, 1560 fb_helper->funcs->initial_config(fb_helper, crtcs, modes,
1531 enabled, width, height))) { 1561 enabled, width, height))) {
1532 memset(modes, 0, dev->mode_config.num_connector*sizeof(modes[0])); 1562 memset(modes, 0, dev->mode_config.num_connector*sizeof(modes[0]));
1533 memset(crtcs, 0, dev->mode_config.num_connector*sizeof(crtcs[0])); 1563 memset(crtcs, 0, dev->mode_config.num_connector*sizeof(crtcs[0]));
1534 1564
1535 if (!drm_target_cloned(fb_helper, 1565 if (!drm_target_cloned(fb_helper,
1536 modes, enabled, width, height) && 1566 modes, enabled, width, height) &&
1537 !drm_target_preferred(fb_helper, 1567 !drm_target_preferred(fb_helper,
1538 modes, enabled, width, height)) 1568 modes, enabled, width, height))
1539 DRM_ERROR("Unable to find initial modes\n"); 1569 DRM_ERROR("Unable to find initial modes\n");
1540 1570
1541 DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", 1571 DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n",
1542 width, height); 1572 width, height);
1543 1573
1544 drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); 1574 drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height);
1545 } 1575 }
1546 1576
1547 /* need to set the modesets up here for use later */ 1577 /* need to set the modesets up here for use later */
1548 /* fill out the connector<->crtc mappings into the modesets */ 1578 /* fill out the connector<->crtc mappings into the modesets */
1549 for (i = 0; i < fb_helper->crtc_count; i++) { 1579 for (i = 0; i < fb_helper->crtc_count; i++) {
1550 modeset = &fb_helper->crtc_info[i].mode_set; 1580 modeset = &fb_helper->crtc_info[i].mode_set;
1551 modeset->num_connectors = 0; 1581 modeset->num_connectors = 0;
1552 modeset->fb = NULL; 1582 modeset->fb = NULL;
1553 } 1583 }
1554 1584
1555 for (i = 0; i < fb_helper->connector_count; i++) { 1585 for (i = 0; i < fb_helper->connector_count; i++) {
1556 struct drm_display_mode *mode = modes[i]; 1586 struct drm_display_mode *mode = modes[i];
1557 struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; 1587 struct drm_fb_helper_crtc *fb_crtc = crtcs[i];
1558 modeset = &fb_crtc->mode_set; 1588 modeset = &fb_crtc->mode_set;
1559 1589
1560 if (mode && fb_crtc) { 1590 if (mode && fb_crtc) {
1561 DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", 1591 DRM_DEBUG_KMS("desired mode %s set on crtc %d\n",
1562 mode->name, fb_crtc->mode_set.crtc->base.id); 1592 mode->name, fb_crtc->mode_set.crtc->base.id);
1563 fb_crtc->desired_mode = mode; 1593 fb_crtc->desired_mode = mode;
1564 if (modeset->mode) 1594 if (modeset->mode)
1565 drm_mode_destroy(dev, modeset->mode); 1595 drm_mode_destroy(dev, modeset->mode);
1566 modeset->mode = drm_mode_duplicate(dev, 1596 modeset->mode = drm_mode_duplicate(dev,
1567 fb_crtc->desired_mode); 1597 fb_crtc->desired_mode);
1568 modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; 1598 modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector;
1569 modeset->fb = fb_helper->fb; 1599 modeset->fb = fb_helper->fb;
1570 } 1600 }
1571 } 1601 }
1572 1602
1573 /* Clear out any old modes if there are no more connected outputs. */ 1603 /* Clear out any old modes if there are no more connected outputs. */
1574 for (i = 0; i < fb_helper->crtc_count; i++) { 1604 for (i = 0; i < fb_helper->crtc_count; i++) {
1575 modeset = &fb_helper->crtc_info[i].mode_set; 1605 modeset = &fb_helper->crtc_info[i].mode_set;
1576 if (modeset->num_connectors == 0) { 1606 if (modeset->num_connectors == 0) {
1577 BUG_ON(modeset->fb); 1607 BUG_ON(modeset->fb);
1578 BUG_ON(modeset->num_connectors); 1608 BUG_ON(modeset->num_connectors);
1579 if (modeset->mode) 1609 if (modeset->mode)
1580 drm_mode_destroy(dev, modeset->mode); 1610 drm_mode_destroy(dev, modeset->mode);
1581 modeset->mode = NULL; 1611 modeset->mode = NULL;
1582 } 1612 }
1583 } 1613 }
1584 out: 1614 out:
1585 kfree(crtcs); 1615 kfree(crtcs);
1586 kfree(modes); 1616 kfree(modes);
1587 kfree(enabled); 1617 kfree(enabled);
1588 } 1618 }
1589 1619
1590 /** 1620 /**
1591 * drm_fb_helper_initial_config - setup a sane initial connector configuration 1621 * drm_fb_helper_initial_config - setup a sane initial connector configuration
1592 * @fb_helper: fb_helper device struct 1622 * @fb_helper: fb_helper device struct
1593 * @bpp_sel: bpp value to use for the framebuffer configuration 1623 * @bpp_sel: bpp value to use for the framebuffer configuration
1594 * 1624 *
1595 * Scans the CRTCs and connectors and tries to put together an initial setup. 1625 * Scans the CRTCs and connectors and tries to put together an initial setup.
1596 * At the moment, this is a cloned configuration across all heads with 1626 * At the moment, this is a cloned configuration across all heads with
1597 * a new framebuffer object as the backing store. 1627 * a new framebuffer object as the backing store.
1598 * 1628 *
1599 * Note that this also registers the fbdev and so allows userspace to call into 1629 * Note that this also registers the fbdev and so allows userspace to call into
1600 * the driver through the fbdev interfaces. 1630 * the driver through the fbdev interfaces.
1601 * 1631 *
1602 * This function will call down into the ->fb_probe callback to let 1632 * This function will call down into the ->fb_probe callback to let
1603 * the driver allocate and initialize the fbdev info structure and the drm 1633 * the driver allocate and initialize the fbdev info structure and the drm
1604 * framebuffer used to back the fbdev. drm_fb_helper_fill_var() and 1634 * framebuffer used to back the fbdev. drm_fb_helper_fill_var() and
1605 * drm_fb_helper_fill_fix() are provided as helpers to setup simple default 1635 * drm_fb_helper_fill_fix() are provided as helpers to setup simple default
1606 * values for the fbdev info structure. 1636 * values for the fbdev info structure.
1607 * 1637 *
1608 * RETURNS: 1638 * RETURNS:
1609 * Zero if everything went ok, nonzero otherwise. 1639 * Zero if everything went ok, nonzero otherwise.
1610 */ 1640 */
1611 bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) 1641 bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel)
1612 { 1642 {
1613 struct drm_device *dev = fb_helper->dev; 1643 struct drm_device *dev = fb_helper->dev;
1614 int count = 0; 1644 int count = 0;
1615 1645
1616 mutex_lock(&dev->mode_config.mutex); 1646 mutex_lock(&dev->mode_config.mutex);
1617 count = drm_fb_helper_probe_connector_modes(fb_helper, 1647 count = drm_fb_helper_probe_connector_modes(fb_helper,
1618 dev->mode_config.max_width, 1648 dev->mode_config.max_width,
1619 dev->mode_config.max_height); 1649 dev->mode_config.max_height);
1620 mutex_unlock(&dev->mode_config.mutex); 1650 mutex_unlock(&dev->mode_config.mutex);
1621 /* 1651 /*
1622 * we shouldn't end up with no modes here. 1652 * we shouldn't end up with no modes here.
1623 */ 1653 */
1624 if (count == 0) 1654 if (count == 0)
1625 dev_info(fb_helper->dev->dev, "No connectors reported connected with modes\n"); 1655 dev_info(fb_helper->dev->dev, "No connectors reported connected with modes\n");
1626 1656
1627 drm_setup_crtcs(fb_helper); 1657 drm_setup_crtcs(fb_helper);
1628 1658
1629 return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); 1659 return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel);
1630 } 1660 }
1631 EXPORT_SYMBOL(drm_fb_helper_initial_config); 1661 EXPORT_SYMBOL(drm_fb_helper_initial_config);
1632 1662
1633 /** 1663 /**
1634 * drm_fb_helper_hotplug_event - respond to a hotplug notification by 1664 * drm_fb_helper_hotplug_event - respond to a hotplug notification by
1635 * probing all the outputs attached to the fb 1665 * probing all the outputs attached to the fb
1636 * @fb_helper: the drm_fb_helper 1666 * @fb_helper: the drm_fb_helper
1637 * 1667 *
1638 * Scan the connectors attached to the fb_helper and try to put together a 1668 * Scan the connectors attached to the fb_helper and try to put together a
1639 * setup after *notification of a change in output configuration. 1669 * setup after *notification of a change in output configuration.
1640 * 1670 *
1641 * Called at runtime, takes the mode config locks to be able to check/change the 1671 * Called at runtime, takes the mode config locks to be able to check/change the
1642 * modeset configuration. Must be run from process context (which usually means 1672 * modeset configuration. Must be run from process context (which usually means
1643 * either the output polling work or a work item launched from the driver's 1673 * either the output polling work or a work item launched from the driver's
1644 * hotplug interrupt). 1674 * hotplug interrupt).
1645 * 1675 *
1646 * Note that drivers may call this even before calling 1676 * Note that drivers may call this even before calling
1647 * drm_fb_helper_initial_config but only aftert drm_fb_helper_init. This allows 1677 * drm_fb_helper_initial_config but only aftert drm_fb_helper_init. This allows
1648 * for a race-free fbcon setup and will make sure that the fbdev emulation will 1678 * for a race-free fbcon setup and will make sure that the fbdev emulation will
1649 * not miss any hotplug events. 1679 * not miss any hotplug events.
1650 * 1680 *
1651 * RETURNS: 1681 * RETURNS:
1652 * 0 on success and a non-zero error code otherwise. 1682 * 0 on success and a non-zero error code otherwise.
1653 */ 1683 */
1654 int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) 1684 int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper)
1655 { 1685 {
1656 struct drm_device *dev = fb_helper->dev; 1686 struct drm_device *dev = fb_helper->dev;
1657 u32 max_width, max_height; 1687 u32 max_width, max_height;
1658 1688
1659 mutex_lock(&fb_helper->dev->mode_config.mutex); 1689 mutex_lock(&fb_helper->dev->mode_config.mutex);
1660 if (!fb_helper->fb || !drm_fb_helper_is_bound(fb_helper)) { 1690 if (!fb_helper->fb || !drm_fb_helper_is_bound(fb_helper)) {
1661 fb_helper->delayed_hotplug = true; 1691 fb_helper->delayed_hotplug = true;
1662 mutex_unlock(&fb_helper->dev->mode_config.mutex); 1692 mutex_unlock(&fb_helper->dev->mode_config.mutex);
1663 return 0; 1693 return 0;
1664 } 1694 }
1665 DRM_DEBUG_KMS("\n"); 1695 DRM_DEBUG_KMS("\n");
1666 1696
1667 max_width = fb_helper->fb->width; 1697 max_width = fb_helper->fb->width;
1668 max_height = fb_helper->fb->height; 1698 max_height = fb_helper->fb->height;
1669 1699
1670 drm_fb_helper_probe_connector_modes(fb_helper, max_width, max_height); 1700 drm_fb_helper_probe_connector_modes(fb_helper, max_width, max_height);
1671 mutex_unlock(&fb_helper->dev->mode_config.mutex); 1701 mutex_unlock(&fb_helper->dev->mode_config.mutex);
1672 1702
1673 drm_modeset_lock_all(dev); 1703 drm_modeset_lock_all(dev);
1674 drm_setup_crtcs(fb_helper); 1704 drm_setup_crtcs(fb_helper);
1675 drm_modeset_unlock_all(dev); 1705 drm_modeset_unlock_all(dev);
1676 drm_fb_helper_set_par(fb_helper->fbdev); 1706 drm_fb_helper_set_par(fb_helper->fbdev);
1677 1707
1678 return 0; 1708 return 0;
1679 } 1709 }
1680 EXPORT_SYMBOL(drm_fb_helper_hotplug_event); 1710 EXPORT_SYMBOL(drm_fb_helper_hotplug_event);
1681 1711
1682 /* The Kconfig DRM_KMS_HELPER selects FRAMEBUFFER_CONSOLE (if !EXPERT) 1712 /* The Kconfig DRM_KMS_HELPER selects FRAMEBUFFER_CONSOLE (if !EXPERT)
1683 * but the module doesn't depend on any fb console symbols. At least 1713 * but the module doesn't depend on any fb console symbols. At least
1684 * attempt to load fbcon to avoid leaving the system without a usable console. 1714 * attempt to load fbcon to avoid leaving the system without a usable console.
1685 */ 1715 */
1686 #if defined(CONFIG_FRAMEBUFFER_CONSOLE_MODULE) && !defined(CONFIG_EXPERT) 1716 #if defined(CONFIG_FRAMEBUFFER_CONSOLE_MODULE) && !defined(CONFIG_EXPERT)
1687 static int __init drm_fb_helper_modinit(void) 1717 static int __init drm_fb_helper_modinit(void)
1688 { 1718 {
1689 const char *name = "fbcon"; 1719 const char *name = "fbcon";
1690 struct module *fbcon; 1720 struct module *fbcon;
1691 1721
1692 mutex_lock(&module_mutex); 1722 mutex_lock(&module_mutex);
1693 fbcon = find_module(name); 1723 fbcon = find_module(name);
1694 mutex_unlock(&module_mutex); 1724 mutex_unlock(&module_mutex);
1695 1725
1696 if (!fbcon) 1726 if (!fbcon)
1697 request_module_nowait(name); 1727 request_module_nowait(name);
1698 return 0; 1728 return 0;
1699 } 1729 }
1700 1730
1701 module_init(drm_fb_helper_modinit); 1731 module_init(drm_fb_helper_modinit);
1702 #endif 1732 #endif
1703 1733