Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2006-2007 Intel Corporation |
| 3 | * Copyright (c) 2006 Dave Airlie <airlied@linux.ie> |
| 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 (including the next |
| 13 | * paragraph) shall be included in all copies or substantial portions of the |
| 14 | * Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 22 | * DEALINGS IN THE SOFTWARE. |
| 23 | * |
| 24 | * Authors: |
| 25 | * Eric Anholt <eric@anholt.net> |
| 26 | * Dave Airlie <airlied@linux.ie> |
| 27 | * Jesse Barnes <jesse.barnes@intel.com> |
| 28 | */ |
| 29 | |
Paul Collins | 565dcd4 | 2009-02-04 23:05:41 +1300 | [diff] [blame] | 30 | #include <linux/dmi.h> |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 31 | #include <linux/i2c.h> |
| 32 | #include "drmP.h" |
| 33 | #include "drm.h" |
| 34 | #include "drm_crtc.h" |
| 35 | #include "drm_edid.h" |
| 36 | #include "intel_drv.h" |
| 37 | #include "i915_drm.h" |
| 38 | #include "i915_drv.h" |
| 39 | |
| 40 | /** |
| 41 | * Sets the backlight level. |
| 42 | * |
| 43 | * \param level backlight level, from 0 to intel_lvds_get_max_backlight(). |
| 44 | */ |
| 45 | static void intel_lvds_set_backlight(struct drm_device *dev, int level) |
| 46 | { |
| 47 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 48 | u32 blc_pwm_ctl; |
| 49 | |
| 50 | blc_pwm_ctl = I915_READ(BLC_PWM_CTL) & ~BACKLIGHT_DUTY_CYCLE_MASK; |
| 51 | I915_WRITE(BLC_PWM_CTL, (blc_pwm_ctl | |
| 52 | (level << BACKLIGHT_DUTY_CYCLE_SHIFT))); |
| 53 | } |
| 54 | |
| 55 | /** |
| 56 | * Returns the maximum level of the backlight duty cycle field. |
| 57 | */ |
| 58 | static u32 intel_lvds_get_max_backlight(struct drm_device *dev) |
| 59 | { |
| 60 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 61 | |
| 62 | return ((I915_READ(BLC_PWM_CTL) & BACKLIGHT_MODULATION_FREQ_MASK) >> |
| 63 | BACKLIGHT_MODULATION_FREQ_SHIFT) * 2; |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Sets the power state for the panel. |
| 68 | */ |
| 69 | static void intel_lvds_set_power(struct drm_device *dev, bool on) |
| 70 | { |
| 71 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 72 | u32 pp_status; |
| 73 | |
| 74 | if (on) { |
| 75 | I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | |
| 76 | POWER_TARGET_ON); |
| 77 | do { |
| 78 | pp_status = I915_READ(PP_STATUS); |
| 79 | } while ((pp_status & PP_ON) == 0); |
| 80 | |
| 81 | intel_lvds_set_backlight(dev, dev_priv->backlight_duty_cycle); |
| 82 | } else { |
| 83 | intel_lvds_set_backlight(dev, 0); |
| 84 | |
| 85 | I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & |
| 86 | ~POWER_TARGET_ON); |
| 87 | do { |
| 88 | pp_status = I915_READ(PP_STATUS); |
| 89 | } while (pp_status & PP_ON); |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | static void intel_lvds_dpms(struct drm_encoder *encoder, int mode) |
| 94 | { |
| 95 | struct drm_device *dev = encoder->dev; |
| 96 | |
| 97 | if (mode == DRM_MODE_DPMS_ON) |
| 98 | intel_lvds_set_power(dev, true); |
| 99 | else |
| 100 | intel_lvds_set_power(dev, false); |
| 101 | |
| 102 | /* XXX: We never power down the LVDS pairs. */ |
| 103 | } |
| 104 | |
| 105 | static void intel_lvds_save(struct drm_connector *connector) |
| 106 | { |
| 107 | struct drm_device *dev = connector->dev; |
| 108 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 109 | |
| 110 | dev_priv->savePP_ON = I915_READ(PP_ON_DELAYS); |
| 111 | dev_priv->savePP_OFF = I915_READ(PP_OFF_DELAYS); |
| 112 | dev_priv->savePP_CONTROL = I915_READ(PP_CONTROL); |
| 113 | dev_priv->savePP_DIVISOR = I915_READ(PP_DIVISOR); |
| 114 | dev_priv->saveBLC_PWM_CTL = I915_READ(BLC_PWM_CTL); |
| 115 | dev_priv->backlight_duty_cycle = (dev_priv->saveBLC_PWM_CTL & |
| 116 | BACKLIGHT_DUTY_CYCLE_MASK); |
| 117 | |
| 118 | /* |
| 119 | * If the light is off at server startup, just make it full brightness |
| 120 | */ |
| 121 | if (dev_priv->backlight_duty_cycle == 0) |
| 122 | dev_priv->backlight_duty_cycle = |
| 123 | intel_lvds_get_max_backlight(dev); |
| 124 | } |
| 125 | |
| 126 | static void intel_lvds_restore(struct drm_connector *connector) |
| 127 | { |
| 128 | struct drm_device *dev = connector->dev; |
| 129 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 130 | |
| 131 | I915_WRITE(BLC_PWM_CTL, dev_priv->saveBLC_PWM_CTL); |
| 132 | I915_WRITE(PP_ON_DELAYS, dev_priv->savePP_ON); |
| 133 | I915_WRITE(PP_OFF_DELAYS, dev_priv->savePP_OFF); |
| 134 | I915_WRITE(PP_DIVISOR, dev_priv->savePP_DIVISOR); |
| 135 | I915_WRITE(PP_CONTROL, dev_priv->savePP_CONTROL); |
| 136 | if (dev_priv->savePP_CONTROL & POWER_TARGET_ON) |
| 137 | intel_lvds_set_power(dev, true); |
| 138 | else |
| 139 | intel_lvds_set_power(dev, false); |
| 140 | } |
| 141 | |
| 142 | static int intel_lvds_mode_valid(struct drm_connector *connector, |
| 143 | struct drm_display_mode *mode) |
| 144 | { |
| 145 | struct drm_device *dev = connector->dev; |
| 146 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 147 | struct drm_display_mode *fixed_mode = dev_priv->panel_fixed_mode; |
| 148 | |
| 149 | if (fixed_mode) { |
| 150 | if (mode->hdisplay > fixed_mode->hdisplay) |
| 151 | return MODE_PANEL; |
| 152 | if (mode->vdisplay > fixed_mode->vdisplay) |
| 153 | return MODE_PANEL; |
| 154 | } |
| 155 | |
| 156 | return MODE_OK; |
| 157 | } |
| 158 | |
| 159 | static bool intel_lvds_mode_fixup(struct drm_encoder *encoder, |
| 160 | struct drm_display_mode *mode, |
| 161 | struct drm_display_mode *adjusted_mode) |
| 162 | { |
| 163 | struct drm_device *dev = encoder->dev; |
| 164 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 165 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); |
| 166 | struct drm_encoder *tmp_encoder; |
| 167 | |
| 168 | /* Should never happen!! */ |
| 169 | if (!IS_I965G(dev) && intel_crtc->pipe == 0) { |
| 170 | printk(KERN_ERR "Can't support LVDS on pipe A\n"); |
| 171 | return false; |
| 172 | } |
| 173 | |
| 174 | /* Should never happen!! */ |
| 175 | list_for_each_entry(tmp_encoder, &dev->mode_config.encoder_list, head) { |
| 176 | if (tmp_encoder != encoder && tmp_encoder->crtc == encoder->crtc) { |
| 177 | printk(KERN_ERR "Can't enable LVDS and another " |
| 178 | "encoder on the same pipe\n"); |
| 179 | return false; |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | /* |
| 184 | * If we have timings from the BIOS for the panel, put them in |
| 185 | * to the adjusted mode. The CRTC will be set up for this mode, |
| 186 | * with the panel scaling set up to source from the H/VDisplay |
| 187 | * of the original mode. |
| 188 | */ |
| 189 | if (dev_priv->panel_fixed_mode != NULL) { |
| 190 | adjusted_mode->hdisplay = dev_priv->panel_fixed_mode->hdisplay; |
| 191 | adjusted_mode->hsync_start = |
| 192 | dev_priv->panel_fixed_mode->hsync_start; |
| 193 | adjusted_mode->hsync_end = |
| 194 | dev_priv->panel_fixed_mode->hsync_end; |
| 195 | adjusted_mode->htotal = dev_priv->panel_fixed_mode->htotal; |
| 196 | adjusted_mode->vdisplay = dev_priv->panel_fixed_mode->vdisplay; |
| 197 | adjusted_mode->vsync_start = |
| 198 | dev_priv->panel_fixed_mode->vsync_start; |
| 199 | adjusted_mode->vsync_end = |
| 200 | dev_priv->panel_fixed_mode->vsync_end; |
| 201 | adjusted_mode->vtotal = dev_priv->panel_fixed_mode->vtotal; |
| 202 | adjusted_mode->clock = dev_priv->panel_fixed_mode->clock; |
| 203 | drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V); |
| 204 | } |
| 205 | |
| 206 | /* |
| 207 | * XXX: It would be nice to support lower refresh rates on the |
| 208 | * panels to reduce power consumption, and perhaps match the |
| 209 | * user's requested refresh rate. |
| 210 | */ |
| 211 | |
| 212 | return true; |
| 213 | } |
| 214 | |
| 215 | static void intel_lvds_prepare(struct drm_encoder *encoder) |
| 216 | { |
| 217 | struct drm_device *dev = encoder->dev; |
| 218 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 219 | |
| 220 | dev_priv->saveBLC_PWM_CTL = I915_READ(BLC_PWM_CTL); |
| 221 | dev_priv->backlight_duty_cycle = (dev_priv->saveBLC_PWM_CTL & |
| 222 | BACKLIGHT_DUTY_CYCLE_MASK); |
| 223 | |
| 224 | intel_lvds_set_power(dev, false); |
| 225 | } |
| 226 | |
| 227 | static void intel_lvds_commit( struct drm_encoder *encoder) |
| 228 | { |
| 229 | struct drm_device *dev = encoder->dev; |
| 230 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 231 | |
| 232 | if (dev_priv->backlight_duty_cycle == 0) |
| 233 | dev_priv->backlight_duty_cycle = |
| 234 | intel_lvds_get_max_backlight(dev); |
| 235 | |
| 236 | intel_lvds_set_power(dev, true); |
| 237 | } |
| 238 | |
| 239 | static void intel_lvds_mode_set(struct drm_encoder *encoder, |
| 240 | struct drm_display_mode *mode, |
| 241 | struct drm_display_mode *adjusted_mode) |
| 242 | { |
| 243 | struct drm_device *dev = encoder->dev; |
| 244 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 245 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); |
| 246 | u32 pfit_control; |
| 247 | |
| 248 | /* |
| 249 | * The LVDS pin pair will already have been turned on in the |
| 250 | * intel_crtc_mode_set since it has a large impact on the DPLL |
| 251 | * settings. |
| 252 | */ |
| 253 | |
| 254 | /* |
| 255 | * Enable automatic panel scaling so that non-native modes fill the |
| 256 | * screen. Should be enabled before the pipe is enabled, according to |
| 257 | * register description and PRM. |
| 258 | */ |
| 259 | if (mode->hdisplay != adjusted_mode->hdisplay || |
| 260 | mode->vdisplay != adjusted_mode->vdisplay) |
| 261 | pfit_control = (PFIT_ENABLE | VERT_AUTO_SCALE | |
| 262 | HORIZ_AUTO_SCALE | VERT_INTERP_BILINEAR | |
| 263 | HORIZ_INTERP_BILINEAR); |
| 264 | else |
| 265 | pfit_control = 0; |
| 266 | |
| 267 | if (!IS_I965G(dev)) { |
Li Peng | 2b5cde2 | 2009-03-13 10:25:07 +0800 | [diff] [blame] | 268 | if (dev_priv->panel_wants_dither || dev_priv->lvds_dither) |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 269 | pfit_control |= PANEL_8TO6_DITHER_ENABLE; |
| 270 | } |
| 271 | else |
| 272 | pfit_control |= intel_crtc->pipe << PFIT_PIPE_SHIFT; |
| 273 | |
| 274 | I915_WRITE(PFIT_CONTROL, pfit_control); |
| 275 | } |
| 276 | |
| 277 | /** |
| 278 | * Detect the LVDS connection. |
| 279 | * |
| 280 | * This always returns CONNECTOR_STATUS_CONNECTED. This connector should only have |
| 281 | * been set up if the LVDS was actually connected anyway. |
| 282 | */ |
| 283 | static enum drm_connector_status intel_lvds_detect(struct drm_connector *connector) |
| 284 | { |
| 285 | return connector_status_connected; |
| 286 | } |
| 287 | |
| 288 | /** |
| 289 | * Return the list of DDC modes if available, or the BIOS fixed mode otherwise. |
| 290 | */ |
| 291 | static int intel_lvds_get_modes(struct drm_connector *connector) |
| 292 | { |
| 293 | struct drm_device *dev = connector->dev; |
| 294 | struct intel_output *intel_output = to_intel_output(connector); |
| 295 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 296 | int ret = 0; |
| 297 | |
| 298 | ret = intel_ddc_get_modes(intel_output); |
| 299 | |
| 300 | if (ret) |
| 301 | return ret; |
| 302 | |
| 303 | /* Didn't get an EDID, so |
| 304 | * Set wide sync ranges so we get all modes |
| 305 | * handed to valid_mode for checking |
| 306 | */ |
| 307 | connector->display_info.min_vfreq = 0; |
| 308 | connector->display_info.max_vfreq = 200; |
| 309 | connector->display_info.min_hfreq = 0; |
| 310 | connector->display_info.max_hfreq = 200; |
| 311 | |
| 312 | if (dev_priv->panel_fixed_mode != NULL) { |
| 313 | struct drm_display_mode *mode; |
| 314 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 315 | mode = drm_mode_duplicate(dev, dev_priv->panel_fixed_mode); |
| 316 | drm_mode_probed_add(connector, mode); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 317 | |
| 318 | return 1; |
| 319 | } |
| 320 | |
| 321 | return 0; |
| 322 | } |
| 323 | |
| 324 | /** |
| 325 | * intel_lvds_destroy - unregister and free LVDS structures |
| 326 | * @connector: connector to free |
| 327 | * |
| 328 | * Unregister the DDC bus for this connector then free the driver private |
| 329 | * structure. |
| 330 | */ |
| 331 | static void intel_lvds_destroy(struct drm_connector *connector) |
| 332 | { |
| 333 | struct intel_output *intel_output = to_intel_output(connector); |
| 334 | |
| 335 | if (intel_output->ddc_bus) |
| 336 | intel_i2c_destroy(intel_output->ddc_bus); |
| 337 | drm_sysfs_connector_remove(connector); |
| 338 | drm_connector_cleanup(connector); |
| 339 | kfree(connector); |
| 340 | } |
| 341 | |
Jesse Barnes | 335041e | 2009-01-22 22:22:06 +1000 | [diff] [blame] | 342 | static int intel_lvds_set_property(struct drm_connector *connector, |
| 343 | struct drm_property *property, |
| 344 | uint64_t value) |
| 345 | { |
| 346 | struct drm_device *dev = connector->dev; |
| 347 | |
| 348 | if (property == dev->mode_config.dpms_property && connector->encoder) |
| 349 | intel_lvds_dpms(connector->encoder, (uint32_t)(value & 0xf)); |
| 350 | |
| 351 | return 0; |
| 352 | } |
| 353 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 354 | static const struct drm_encoder_helper_funcs intel_lvds_helper_funcs = { |
| 355 | .dpms = intel_lvds_dpms, |
| 356 | .mode_fixup = intel_lvds_mode_fixup, |
| 357 | .prepare = intel_lvds_prepare, |
| 358 | .mode_set = intel_lvds_mode_set, |
| 359 | .commit = intel_lvds_commit, |
| 360 | }; |
| 361 | |
| 362 | static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs = { |
| 363 | .get_modes = intel_lvds_get_modes, |
| 364 | .mode_valid = intel_lvds_mode_valid, |
| 365 | .best_encoder = intel_best_encoder, |
| 366 | }; |
| 367 | |
| 368 | static const struct drm_connector_funcs intel_lvds_connector_funcs = { |
| 369 | .save = intel_lvds_save, |
| 370 | .restore = intel_lvds_restore, |
| 371 | .detect = intel_lvds_detect, |
| 372 | .fill_modes = drm_helper_probe_single_connector_modes, |
Jesse Barnes | 335041e | 2009-01-22 22:22:06 +1000 | [diff] [blame] | 373 | .set_property = intel_lvds_set_property, |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 374 | .destroy = intel_lvds_destroy, |
| 375 | }; |
| 376 | |
| 377 | |
| 378 | static void intel_lvds_enc_destroy(struct drm_encoder *encoder) |
| 379 | { |
| 380 | drm_encoder_cleanup(encoder); |
| 381 | } |
| 382 | |
| 383 | static const struct drm_encoder_funcs intel_lvds_enc_funcs = { |
| 384 | .destroy = intel_lvds_enc_destroy, |
| 385 | }; |
| 386 | |
Jarod Wilson | 425d244 | 2009-05-05 10:00:25 -0400 | [diff] [blame] | 387 | static int __init intel_no_lvds_dmi_callback(const struct dmi_system_id *id) |
| 388 | { |
| 389 | DRM_DEBUG("Skipping LVDS initialization for %s\n", id->ident); |
| 390 | return 1; |
| 391 | } |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 392 | |
Jarod Wilson | 425d244 | 2009-05-05 10:00:25 -0400 | [diff] [blame] | 393 | /* These systems claim to have LVDS, but really don't */ |
| 394 | static const struct dmi_system_id __initdata intel_no_lvds[] = { |
| 395 | { |
| 396 | .callback = intel_no_lvds_dmi_callback, |
| 397 | .ident = "Apple Mac Mini (Core series)", |
| 398 | .matches = { |
| 399 | DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), |
| 400 | DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"), |
| 401 | }, |
| 402 | }, |
| 403 | { |
| 404 | .callback = intel_no_lvds_dmi_callback, |
| 405 | .ident = "Apple Mac Mini (Core 2 series)", |
| 406 | .matches = { |
| 407 | DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), |
| 408 | DMI_MATCH(DMI_PRODUCT_NAME, "Macmini2,1"), |
| 409 | }, |
| 410 | }, |
| 411 | { |
| 412 | .callback = intel_no_lvds_dmi_callback, |
| 413 | .ident = "MSI IM-945GSE-A", |
| 414 | .matches = { |
| 415 | DMI_MATCH(DMI_SYS_VENDOR, "MSI"), |
| 416 | DMI_MATCH(DMI_PRODUCT_NAME, "A9830IMS"), |
| 417 | }, |
| 418 | }, |
| 419 | { |
| 420 | .callback = intel_no_lvds_dmi_callback, |
| 421 | .ident = "Dell Studio Hybrid", |
| 422 | .matches = { |
| 423 | DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), |
| 424 | DMI_MATCH(DMI_PRODUCT_NAME, "Studio Hybrid 140g"), |
| 425 | }, |
| 426 | }, |
| 427 | |
| 428 | /* FIXME: add a check for the Aopen Mini PC */ |
| 429 | |
| 430 | { } /* terminating entry */ |
| 431 | }; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 432 | |
| 433 | /** |
| 434 | * intel_lvds_init - setup LVDS connectors on this device |
| 435 | * @dev: drm device |
| 436 | * |
| 437 | * Create the connector, register the LVDS DDC bus, and try to figure out what |
| 438 | * modes we can display on the LVDS panel (if present). |
| 439 | */ |
| 440 | void intel_lvds_init(struct drm_device *dev) |
| 441 | { |
| 442 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 443 | struct intel_output *intel_output; |
| 444 | struct drm_connector *connector; |
| 445 | struct drm_encoder *encoder; |
| 446 | struct drm_display_mode *scan; /* *modes, *bios_mode; */ |
| 447 | struct drm_crtc *crtc; |
| 448 | u32 lvds; |
| 449 | int pipe; |
| 450 | |
Jarod Wilson | 425d244 | 2009-05-05 10:00:25 -0400 | [diff] [blame] | 451 | /* Skip init on machines we know falsely report LVDS */ |
| 452 | if (dmi_check_system(intel_no_lvds)) |
Paul Collins | 565dcd4 | 2009-02-04 23:05:41 +1300 | [diff] [blame] | 453 | return; |
Paul Collins | 565dcd4 | 2009-02-04 23:05:41 +1300 | [diff] [blame] | 454 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 455 | intel_output = kzalloc(sizeof(struct intel_output), GFP_KERNEL); |
| 456 | if (!intel_output) { |
| 457 | return; |
| 458 | } |
| 459 | |
| 460 | connector = &intel_output->base; |
| 461 | encoder = &intel_output->enc; |
| 462 | drm_connector_init(dev, &intel_output->base, &intel_lvds_connector_funcs, |
| 463 | DRM_MODE_CONNECTOR_LVDS); |
| 464 | |
| 465 | drm_encoder_init(dev, &intel_output->enc, &intel_lvds_enc_funcs, |
| 466 | DRM_MODE_ENCODER_LVDS); |
| 467 | |
| 468 | drm_mode_connector_attach_encoder(&intel_output->base, &intel_output->enc); |
| 469 | intel_output->type = INTEL_OUTPUT_LVDS; |
| 470 | |
| 471 | drm_encoder_helper_add(encoder, &intel_lvds_helper_funcs); |
| 472 | drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs); |
| 473 | connector->display_info.subpixel_order = SubPixelHorizontalRGB; |
| 474 | connector->interlace_allowed = false; |
| 475 | connector->doublescan_allowed = false; |
| 476 | |
| 477 | |
| 478 | /* |
| 479 | * LVDS discovery: |
| 480 | * 1) check for EDID on DDC |
| 481 | * 2) check for VBT data |
| 482 | * 3) check to see if LVDS is already on |
| 483 | * if none of the above, no panel |
| 484 | * 4) make sure lid is open |
| 485 | * if closed, act like it's not there for now |
| 486 | */ |
| 487 | |
| 488 | /* Set up the DDC bus. */ |
| 489 | intel_output->ddc_bus = intel_i2c_create(dev, GPIOC, "LVDSDDC_C"); |
| 490 | if (!intel_output->ddc_bus) { |
| 491 | dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration " |
| 492 | "failed.\n"); |
| 493 | goto failed; |
| 494 | } |
| 495 | |
| 496 | /* |
| 497 | * Attempt to get the fixed panel mode from DDC. Assume that the |
| 498 | * preferred mode is the right one. |
| 499 | */ |
| 500 | intel_ddc_get_modes(intel_output); |
| 501 | |
| 502 | list_for_each_entry(scan, &connector->probed_modes, head) { |
| 503 | mutex_lock(&dev->mode_config.mutex); |
| 504 | if (scan->type & DRM_MODE_TYPE_PREFERRED) { |
| 505 | dev_priv->panel_fixed_mode = |
| 506 | drm_mode_duplicate(dev, scan); |
| 507 | mutex_unlock(&dev->mode_config.mutex); |
Paul Collins | 565dcd4 | 2009-02-04 23:05:41 +1300 | [diff] [blame] | 508 | goto out; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 509 | } |
| 510 | mutex_unlock(&dev->mode_config.mutex); |
| 511 | } |
| 512 | |
| 513 | /* Failed to get EDID, what about VBT? */ |
Ma Ling | 8863170 | 2009-05-13 11:19:55 +0800 | [diff] [blame^] | 514 | if (dev_priv->lfp_lvds_vbt_mode) { |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 515 | mutex_lock(&dev->mode_config.mutex); |
| 516 | dev_priv->panel_fixed_mode = |
Ma Ling | 8863170 | 2009-05-13 11:19:55 +0800 | [diff] [blame^] | 517 | drm_mode_duplicate(dev, dev_priv->lfp_lvds_vbt_mode); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 518 | mutex_unlock(&dev->mode_config.mutex); |
Jesse Barnes | e285f3cd | 2009-01-14 10:53:36 -0800 | [diff] [blame] | 519 | if (dev_priv->panel_fixed_mode) { |
| 520 | dev_priv->panel_fixed_mode->type |= |
| 521 | DRM_MODE_TYPE_PREFERRED; |
Jesse Barnes | e285f3cd | 2009-01-14 10:53:36 -0800 | [diff] [blame] | 522 | goto out; |
| 523 | } |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 524 | } |
| 525 | |
| 526 | /* |
| 527 | * If we didn't get EDID, try checking if the panel is already turned |
| 528 | * on. If so, assume that whatever is currently programmed is the |
| 529 | * correct mode. |
| 530 | */ |
| 531 | lvds = I915_READ(LVDS); |
| 532 | pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0; |
| 533 | crtc = intel_get_crtc_from_pipe(dev, pipe); |
| 534 | |
| 535 | if (crtc && (lvds & LVDS_PORT_EN)) { |
| 536 | dev_priv->panel_fixed_mode = intel_crtc_mode_get(dev, crtc); |
| 537 | if (dev_priv->panel_fixed_mode) { |
| 538 | dev_priv->panel_fixed_mode->type |= |
| 539 | DRM_MODE_TYPE_PREFERRED; |
Paul Collins | 565dcd4 | 2009-02-04 23:05:41 +1300 | [diff] [blame] | 540 | goto out; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 541 | } |
| 542 | } |
| 543 | |
| 544 | /* If we still don't have a mode after all that, give up. */ |
| 545 | if (!dev_priv->panel_fixed_mode) |
| 546 | goto failed; |
| 547 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 548 | out: |
| 549 | drm_sysfs_connector_add(connector); |
| 550 | return; |
| 551 | |
| 552 | failed: |
| 553 | DRM_DEBUG("No LVDS modes found, disabling.\n"); |
| 554 | if (intel_output->ddc_bus) |
| 555 | intel_i2c_destroy(intel_output->ddc_bus); |
| 556 | drm_connector_cleanup(connector); |
| 557 | kfree(connector); |
| 558 | } |