linux-core/radeon_connectors.c

   1 /*
   2  * Copyright 2007-8 Advanced Micro Devices, Inc.
   3  * Copyright 2008 Red Hat Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  21  * OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors: Dave Airlie
  24  *          Alex Deucher
  25  */
  26 #include "drmP.h"
  27 #include "drm_edid.h"
  28 #include "drm_crtc_helper.h"
  29 #include "radeon_drm.h"
  30 #include "radeon_drv.h"
  31
  32 static int radeon_lvds_get_modes(struct drm_connector *connector)
  33 {
  34         struct radeon_connector *radeon_connector = to_radeon_connector(connector);
  35         struct drm_encoder *lvds_encoder;
  36         int ret = 0;
  37         struct edid *edid;
  38
  39         radeon_i2c_do_lock(radeon_connector, 1);
  40         edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter);
  41         radeon_i2c_do_lock(radeon_connector, 0);
  42         if (edid) {
  43                 drm_mode_connector_update_edid_property(&radeon_connector->base, edid);
  44                 ret = drm_add_edid_modes(&radeon_connector->base, edid);
  45                 kfree(edid);
  46                 return ret;
  47         }
  48
  49 #if 0
  50         lvds_encoder = radeon_best_single_encoder(connector);
  51
  52         if (!lvds_encoder)
  53                 return ret;
  54
  55         radeon_encoder_update_panel_size(lvds_encoder, connector);
  56 #endif
  57         return ret;
  58 }
  59
  60 static int radeon_lvds_mode_valid(struct drm_connector *connector,
  61                                   struct drm_display_mode *mode)
  62 {
  63
  64         return MODE_OK;
  65 }
  66
  67 static enum drm_connector_status radeon_lvds_detect(struct drm_connector *connector)
  68 {
  69         return connector_status_connected;
  70 }
  71
  72
  73
  74 struct drm_encoder *radeon_best_single_encoder(struct drm_connector *connector)
  75 {
  76         int enc_id = connector->encoder_ids[0];
  77         struct drm_mode_object *obj;
  78         struct drm_encoder *encoder;
  79
  80         /* pick the encoder ids */
  81         if (enc_id) {
  82                 obj = drm_mode_object_find(connector->dev, enc_id, DRM_MODE_OBJECT_ENCODER);
  83                 if (!obj)
  84                         return NULL;
  85                 encoder = obj_to_encoder(obj);
  86                 return encoder;
  87         }
  88         return NULL;
  89 }
  90
  91 static void radeon_connector_destroy(struct drm_connector *connector)
  92 {
  93         struct radeon_connector *radeon_connector = to_radeon_connector(connector);
  94
  95         if (radeon_connector->ddc_bus)
  96                 radeon_i2c_destroy(radeon_connector->ddc_bus);
  97         drm_sysfs_connector_remove(connector);
  98         drm_connector_cleanup(connector);
  99         kfree(connector);
 100 }
 101
 102 struct drm_connector_helper_funcs radeon_lvds_connector_helper_funcs = {
 103         .get_modes = radeon_lvds_get_modes,
 104         .mode_valid = radeon_lvds_mode_valid,
 105         .best_encoder = radeon_best_single_encoder,
 106 };
 107
 108 struct drm_connector_funcs radeon_lvds_connector_funcs = {
 109         .detect = radeon_lvds_detect,
 110         .fill_modes = drm_helper_probe_single_connector_modes,
 111         .destroy = radeon_connector_destroy,
 112 };
 113
 114 static int radeon_vga_get_modes(struct drm_connector *connector)
 115 {
 116         struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 117         int ret;
 118
 119         ret = radeon_ddc_get_modes(radeon_connector);
 120
 121         return ret;
 122 }
 123
 124 static int radeon_vga_mode_valid(struct drm_connector *connector,
 125                                   struct drm_display_mode *mode)
 126 {
 127
 128         return MODE_OK;
 129 }
 130
 131 static enum drm_connector_status radeon_vga_detect(struct drm_connector *connector)
 132 {
 133         struct edid *edid;
 134         struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 135         struct drm_encoder *encoder;
 136         struct drm_encoder_helper_funcs *encoder_funcs;
 137
 138         radeon_i2c_do_lock(radeon_connector, 1);
 139         edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter);
 140         radeon_i2c_do_lock(radeon_connector, 0);
 141         if (edid) {
 142                 kfree(edid);
 143                 return connector_status_connected;
 144         }
 145
 146         /* if EDID fails to a load detect */
 147         encoder = radeon_best_single_encoder(connector);
 148         if (!encoder)
 149                 return connector_status_disconnected;
 150
 151         encoder_funcs = encoder->helper_private;
 152         return encoder_funcs->detect(encoder, connector);
 153 }
 154
 155 struct drm_connector_helper_funcs radeon_vga_connector_helper_funcs = {
 156         .get_modes = radeon_vga_get_modes,
 157         .mode_valid = radeon_vga_mode_valid,
 158         .best_encoder = radeon_best_single_encoder,
 159 };
 160
 161 struct drm_connector_funcs radeon_vga_connector_funcs = {
 162         .detect = radeon_vga_detect,
 163         .fill_modes = drm_helper_probe_single_connector_modes,
 164         .destroy = radeon_connector_destroy,
 165 };
 166
 167
 168 static enum drm_connector_status radeon_dvi_detect(struct drm_connector *connector)
 169 {
 170         struct edid *edid;
 171         struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 172         struct drm_encoder *encoder;
 173         struct drm_encoder_helper_funcs *encoder_funcs;
 174         struct drm_mode_object *obj;
 175         int i;
 176         enum drm_connector_status ret;
 177
 178         radeon_i2c_do_lock(radeon_connector, 1);
 179         edid = drm_get_edid(&radeon_connector->base, &radeon_connector->ddc_bus->adapter);
 180         radeon_i2c_do_lock(radeon_connector, 0);
 181         if (edid) {
 182                 /* if the monitor is digital - set the bits */
 183                 if (edid->digital)
 184                         radeon_connector->use_digital = 1;
 185                 else
 186                         radeon_connector->use_digital = 0;
 187
 188                 kfree(edid);
 189                 return connector_status_connected;
 190         }
 191
 192         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 193                 if (connector->encoder_ids[i] == 0)
 194                         break;
 195
 196                 obj = drm_mode_object_find(connector->dev, connector->encoder_ids[i], DRM_MODE_OBJECT_ENCODER);
 197                 if (!obj)
 198                         continue;
 199
 200                 encoder = obj_to_encoder(obj);
 201
 202                 encoder_funcs = encoder->helper_private;
 203                 if (encoder_funcs->detect) {
 204                         ret = encoder_funcs->detect(encoder, connector);
 205                         if (ret == connector_status_connected) {
 206                                 radeon_connector->use_digital = 0;
 207                                 return ret;
 208                         }
 209                 }
 210         }
 211         return connector_status_disconnected;
 212 }
 213
 214 /* okay need to be smart in here about which encoder to pick */
 215 struct drm_encoder *radeon_dvi_encoder(struct drm_connector *connector)
 216 {
 217         int enc_id = connector->encoder_ids[0];
 218         struct radeon_connector *radeon_connector = to_radeon_connector(connector);
 219         struct drm_mode_object *obj;
 220         struct drm_encoder *encoder;
 221         int i;
 222         for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
 223                 if (connector->encoder_ids[i] == 0)
 224                         break;
 225
 226                 obj = drm_mode_object_find(connector->dev, connector->encoder_ids[i], DRM_MODE_OBJECT_ENCODER);
 227                 if (!obj)
 228                         continue;
 229
 230                 encoder = obj_to_encoder(obj);
 231
 232                 if (radeon_connector->use_digital) {
 233                         if (encoder->encoder_type == DRM_MODE_ENCODER_TMDS)
 234                                 return encoder;
 235                 } else {
 236                         if (encoder->encoder_type == DRM_MODE_ENCODER_DAC ||
 237                             encoder->encoder_type == DRM_MODE_ENCODER_TVDAC)
 238                                 return encoder;
 239                 }
 240         }
 241
 242         /* see if we have a default encoder  TODO */
 243
 244         /* then check use digitial */
 245         /* pick the first one */
 246         if (enc_id) {
 247                 obj = drm_mode_object_find(connector->dev, enc_id, DRM_MODE_OBJECT_ENCODER);
 248                 if (!obj)
 249                         return NULL;
 250                 encoder = obj_to_encoder(obj);
 251                 return encoder;
 252         }
 253         return NULL;
 254 }
 255
 256 struct drm_connector_helper_funcs radeon_dvi_connector_helper_funcs = {
 257         .get_modes = radeon_vga_get_modes,
 258         .mode_valid = radeon_vga_mode_valid,
 259         .best_encoder = radeon_dvi_encoder,
 260 };
 261
 262 struct drm_connector_funcs radeon_dvi_connector_funcs = {
 263         .detect = radeon_dvi_detect,
 264         .fill_modes = drm_helper_probe_single_connector_modes,
 265         .destroy = radeon_connector_destroy,
 266 };
 267
 268
 269 static struct connector_funcs {
 270         int conn_id;
 271         struct drm_connector_funcs *connector_funcs;
 272         struct drm_connector_helper_funcs *helper_funcs;
 273         int conn_type;
 274         char *i2c_id;
 275 } connector_fns[] = {
 276         { CONNECTOR_NONE, NULL, NULL, DRM_MODE_CONNECTOR_Unknown },
 277         { CONNECTOR_VGA, &radeon_vga_connector_funcs, &radeon_vga_connector_helper_funcs, DRM_MODE_CONNECTOR_VGA , "VGA"},
 278         { CONNECTOR_LVDS, &radeon_lvds_connector_funcs, &radeon_lvds_connector_helper_funcs, DRM_MODE_CONNECTOR_LVDS, "LVDS" },
 279         { CONNECTOR_DVI_A, &radeon_vga_connector_funcs, &radeon_vga_connector_helper_funcs, DRM_MODE_CONNECTOR_DVIA, "DVI" },
 280         { CONNECTOR_DVI_I, &radeon_dvi_connector_funcs, &radeon_dvi_connector_helper_funcs, DRM_MODE_CONNECTOR_DVII, "DVI" },
 281
 282 #if 0
 283         { CONNECTOR_DVI_D, radeon_vga_connector_funcs, radeon_vga_connector_helper_funcs, DRM_MODE_CONNECTOR_VGA },
 284
 285         { CONNECTOR_STV, radeon_vga_connector_funcs, radeon_vga_connector_helper_funcs, DRM_MODE_CONNECTOR_VGA },
 286         { CONNECTOR_CTV, radeon_vga_connector_funcs, radeon_vga_connector_helper_funcs, DRM_MODE_CONNECTOR_VGA },
 287         { CONNECTOR_DIGITAL, radeon_vga_connector_funcs, radeon_vga_connector_helper_funcs, DRM_MODE_CONNECTOR_VGA },
 288         { CONNECTOR_SCART, radeon_vga_connector_funcs, radeon_vga_connector_helper_funcs, DRM_MODE_CONNECTOR_VGA },
 289
 290         { CONNECTOR_HDMI_TYPE_A, radeon_vga_connector_funcs, radeon_vga_connector_helper_funcs, DRM_MODE_CONNECTOR_VGA },
 291         { CONNECTOR_HDMI_TYPE_B, radeon_vga_connector_funcs, radeon_vga_connector_helper_funcs, DRM_MODE_CONNECTOR_VGA },
 292         { CONNECTOR_HDMI_TYPE_B, radeon_vga_connector_funcs, radeon_vga_connector_helper_funcs, DRM_MODE_CONNECTOR_VGA },
 293         { CONNECTOR_HDMI_TYPE_B, radeon_vga_connector_funcs, radeon_vga_connector_helper_funcs, DRM_MODE_CONNECTOR_VGA },
 294         { CONNECTOR_DIN, radeon_vga_connector_funcs, radeon_vga_connector_helper_funcs, DRM_MODE_CONNECTOR_VGA },
 295         { CONNECTOR_DISPLAY_PORT, radeon_vga_connector_funcs, radeon_vga_connector_helper_funcs, DRM_MODE_CONNECTOR_VGA },
 296 #endif
 297 };
 298
 299 struct drm_connector *radeon_connector_add(struct drm_device *dev, int bios_index)
 300 {
 301         struct radeon_connector *radeon_connector;
 302         struct drm_radeon_private *dev_priv = dev->dev_private;
 303         struct radeon_mode_info *mode_info = &dev_priv->mode_info;
 304         struct drm_connector *connector;
 305         int table_idx;
 306
 307         for (table_idx = 0; table_idx < ARRAY_SIZE(connector_fns); table_idx++) {
 308                 if (connector_fns[table_idx].conn_id == mode_info->bios_connector[bios_index].connector_type)
 309                         break;
 310         }
 311
 312         if (table_idx == ARRAY_SIZE(connector_fns))
 313                 return NULL;
 314
 315         radeon_connector = kzalloc(sizeof(struct radeon_connector), GFP_KERNEL);
 316         if (!radeon_connector) {
 317                 return NULL;
 318         }
 319
 320         connector = &radeon_connector->base;
 321
 322         drm_connector_init(dev, &radeon_connector->base, connector_fns[table_idx].connector_funcs,
 323                            connector_fns[table_idx].conn_type);
 324
 325         drm_connector_helper_add(&radeon_connector->base, connector_fns[table_idx].helper_funcs);
 326
 327         if (mode_info->bios_connector[bios_index].ddc_i2c.valid) {
 328                 radeon_connector->ddc_bus = radeon_i2c_create(dev, &mode_info->bios_connector[bios_index].ddc_i2c,
 329                                                               connector_fns[table_idx].i2c_id);
 330                 if (!radeon_connector->ddc_bus)
 331                         goto failed;
 332         }
 333
 334         drm_sysfs_connector_add(connector);
 335         return connector;
 336
 337
 338 failed:
 339         if (radeon_connector->ddc_bus)
 340                 radeon_i2c_destroy(radeon_connector->ddc_bus);
 341         drm_connector_cleanup(connector);
 342         kfree(connector);
 343         return NULL;
 344 }