blob: edba93b3474b9540a5608f6acbd9eb75f7e53a33 [file] [log] [blame]
Jesse Barnes79e53942008-11-07 14:24:08 -08001/*
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
Jesse Barnesc1c7af62009-09-10 15:28:03 -070030#include <acpi/button.h>
Paul Collins565dcd42009-02-04 23:05:41 +130031#include <linux/dmi.h>
Jesse Barnes79e53942008-11-07 14:24:08 -080032#include <linux/i2c.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090033#include <linux/slab.h>
David Howells760285e2012-10-02 18:01:07 +010034#include <drm/drmP.h>
35#include <drm/drm_crtc.h>
36#include <drm/drm_edid.h>
Jesse Barnes79e53942008-11-07 14:24:08 -080037#include "intel_drv.h"
David Howells760285e2012-10-02 18:01:07 +010038#include <drm/i915_drm.h>
Jesse Barnes79e53942008-11-07 14:24:08 -080039#include "i915_drv.h"
Zhao Yakuie99da352009-06-26 09:46:18 +080040#include <linux/acpi.h>
Jesse Barnes79e53942008-11-07 14:24:08 -080041
Zhao Yakui3fbe18d2009-06-22 15:31:25 +080042/* Private structure for the integrated LVDS support */
Chris Wilsonea5b2132010-08-04 13:50:23 +010043struct intel_lvds {
44 struct intel_encoder base;
Chris Wilson788319d2010-09-12 17:34:41 +010045
Chris Wilson219adae2010-09-16 23:05:10 +010046 struct edid *edid;
Chris Wilson788319d2010-09-12 17:34:41 +010047
Zhao Yakui3fbe18d2009-06-22 15:31:25 +080048 int fitting_mode;
49 u32 pfit_control;
50 u32 pfit_pgm_ratios;
Chris Wilsone9e331a2010-09-13 01:16:10 +010051 bool pfit_dirty;
Chris Wilson788319d2010-09-12 17:34:41 +010052
53 struct drm_display_mode *fixed_mode;
Zhao Yakui3fbe18d2009-06-22 15:31:25 +080054};
55
Chris Wilson788319d2010-09-12 17:34:41 +010056static struct intel_lvds *to_intel_lvds(struct drm_encoder *encoder)
Chris Wilsonea5b2132010-08-04 13:50:23 +010057{
Chris Wilson4ef69c72010-09-09 15:14:28 +010058 return container_of(encoder, struct intel_lvds, base.base);
Chris Wilsonea5b2132010-08-04 13:50:23 +010059}
60
Chris Wilson788319d2010-09-12 17:34:41 +010061static struct intel_lvds *intel_attached_lvds(struct drm_connector *connector)
62{
63 return container_of(intel_attached_encoder(connector),
64 struct intel_lvds, base);
65}
66
Daniel Vetterb1dc3322012-07-02 21:09:00 +020067static bool intel_lvds_get_hw_state(struct intel_encoder *encoder,
68 enum pipe *pipe)
69{
70 struct drm_device *dev = encoder->base.dev;
71 struct drm_i915_private *dev_priv = dev->dev_private;
72 u32 lvds_reg, tmp;
73
74 if (HAS_PCH_SPLIT(dev)) {
75 lvds_reg = PCH_LVDS;
76 } else {
77 lvds_reg = LVDS;
78 }
79
80 tmp = I915_READ(lvds_reg);
81
82 if (!(tmp & LVDS_PORT_EN))
83 return false;
84
85 if (HAS_PCH_CPT(dev))
86 *pipe = PORT_TO_PIPE_CPT(tmp);
87 else
88 *pipe = PORT_TO_PIPE(tmp);
89
90 return true;
91}
92
Jesse Barnes79e53942008-11-07 14:24:08 -080093/**
Jesse Barnes79e53942008-11-07 14:24:08 -080094 * Sets the power state for the panel.
95 */
Daniel Vetterc22834e2012-06-30 15:31:28 +020096static void intel_enable_lvds(struct intel_encoder *encoder)
Jesse Barnes79e53942008-11-07 14:24:08 -080097{
Daniel Vetterc22834e2012-06-30 15:31:28 +020098 struct drm_device *dev = encoder->base.dev;
99 struct intel_lvds *intel_lvds = to_intel_lvds(&encoder->base);
100 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
Jesse Barnes79e53942008-11-07 14:24:08 -0800101 struct drm_i915_private *dev_priv = dev->dev_private;
Keith Packardde842ef2011-08-06 10:30:45 -0700102 u32 ctl_reg, lvds_reg, stat_reg;
Zhenyu Wang541998a2009-06-05 15:38:44 +0800103
Eric Anholtc619eed2010-01-28 16:45:52 -0800104 if (HAS_PCH_SPLIT(dev)) {
Zhenyu Wang541998a2009-06-05 15:38:44 +0800105 ctl_reg = PCH_PP_CONTROL;
Jesse Barnes469d1292010-02-11 12:41:05 -0800106 lvds_reg = PCH_LVDS;
Keith Packardde842ef2011-08-06 10:30:45 -0700107 stat_reg = PCH_PP_STATUS;
Zhenyu Wang541998a2009-06-05 15:38:44 +0800108 } else {
109 ctl_reg = PP_CONTROL;
Jesse Barnes469d1292010-02-11 12:41:05 -0800110 lvds_reg = LVDS;
Keith Packardde842ef2011-08-06 10:30:45 -0700111 stat_reg = PP_STATUS;
Zhenyu Wang541998a2009-06-05 15:38:44 +0800112 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800113
Chris Wilson2a1292f2010-12-05 19:21:18 +0000114 I915_WRITE(lvds_reg, I915_READ(lvds_reg) | LVDS_PORT_EN);
Chris Wilsone9e331a2010-09-13 01:16:10 +0100115
Chris Wilson2a1292f2010-12-05 19:21:18 +0000116 if (intel_lvds->pfit_dirty) {
117 /*
118 * Enable automatic panel scaling so that non-native modes
119 * fill the screen. The panel fitter should only be
120 * adjusted whilst the pipe is disabled, according to
121 * register description and PRM.
122 */
123 DRM_DEBUG_KMS("applying panel-fitter: %x, %x\n",
124 intel_lvds->pfit_control,
125 intel_lvds->pfit_pgm_ratios);
Keith Packardde842ef2011-08-06 10:30:45 -0700126
127 I915_WRITE(PFIT_PGM_RATIOS, intel_lvds->pfit_pgm_ratios);
128 I915_WRITE(PFIT_CONTROL, intel_lvds->pfit_control);
129 intel_lvds->pfit_dirty = false;
Jesse Barnes79e53942008-11-07 14:24:08 -0800130 }
Chris Wilson2a1292f2010-12-05 19:21:18 +0000131
132 I915_WRITE(ctl_reg, I915_READ(ctl_reg) | POWER_TARGET_ON);
133 POSTING_READ(lvds_reg);
Keith Packardde842ef2011-08-06 10:30:45 -0700134 if (wait_for((I915_READ(stat_reg) & PP_ON) != 0, 1000))
135 DRM_ERROR("timed out waiting for panel to power on\n");
Chris Wilson2a1292f2010-12-05 19:21:18 +0000136
Daniel Vetter24ded202012-06-05 12:14:54 +0200137 intel_panel_enable_backlight(dev, intel_crtc->pipe);
Chris Wilson2a1292f2010-12-05 19:21:18 +0000138}
139
Daniel Vetterc22834e2012-06-30 15:31:28 +0200140static void intel_disable_lvds(struct intel_encoder *encoder)
Chris Wilson2a1292f2010-12-05 19:21:18 +0000141{
Daniel Vetterc22834e2012-06-30 15:31:28 +0200142 struct drm_device *dev = encoder->base.dev;
143 struct intel_lvds *intel_lvds = to_intel_lvds(&encoder->base);
Chris Wilson2a1292f2010-12-05 19:21:18 +0000144 struct drm_i915_private *dev_priv = dev->dev_private;
Keith Packardde842ef2011-08-06 10:30:45 -0700145 u32 ctl_reg, lvds_reg, stat_reg;
Chris Wilson2a1292f2010-12-05 19:21:18 +0000146
147 if (HAS_PCH_SPLIT(dev)) {
148 ctl_reg = PCH_PP_CONTROL;
149 lvds_reg = PCH_LVDS;
Keith Packardde842ef2011-08-06 10:30:45 -0700150 stat_reg = PCH_PP_STATUS;
Chris Wilson2a1292f2010-12-05 19:21:18 +0000151 } else {
152 ctl_reg = PP_CONTROL;
153 lvds_reg = LVDS;
Keith Packardde842ef2011-08-06 10:30:45 -0700154 stat_reg = PP_STATUS;
Chris Wilson2a1292f2010-12-05 19:21:18 +0000155 }
156
Chris Wilson47356eb2011-01-11 17:06:04 +0000157 intel_panel_disable_backlight(dev);
Chris Wilson2a1292f2010-12-05 19:21:18 +0000158
159 I915_WRITE(ctl_reg, I915_READ(ctl_reg) & ~POWER_TARGET_ON);
Keith Packardde842ef2011-08-06 10:30:45 -0700160 if (wait_for((I915_READ(stat_reg) & PP_ON) == 0, 1000))
161 DRM_ERROR("timed out waiting for panel to power off\n");
Chris Wilson2a1292f2010-12-05 19:21:18 +0000162
163 if (intel_lvds->pfit_control) {
Chris Wilson2a1292f2010-12-05 19:21:18 +0000164 I915_WRITE(PFIT_CONTROL, 0);
165 intel_lvds->pfit_dirty = true;
166 }
167
168 I915_WRITE(lvds_reg, I915_READ(lvds_reg) & ~LVDS_PORT_EN);
Chris Wilsonc9f9ccc2010-09-12 13:07:25 +0100169 POSTING_READ(lvds_reg);
Jesse Barnes79e53942008-11-07 14:24:08 -0800170}
171
Jesse Barnes79e53942008-11-07 14:24:08 -0800172static int intel_lvds_mode_valid(struct drm_connector *connector,
173 struct drm_display_mode *mode)
174{
Chris Wilson788319d2010-09-12 17:34:41 +0100175 struct intel_lvds *intel_lvds = intel_attached_lvds(connector);
176 struct drm_display_mode *fixed_mode = intel_lvds->fixed_mode;
Jesse Barnes79e53942008-11-07 14:24:08 -0800177
Chris Wilson788319d2010-09-12 17:34:41 +0100178 if (mode->hdisplay > fixed_mode->hdisplay)
179 return MODE_PANEL;
180 if (mode->vdisplay > fixed_mode->vdisplay)
181 return MODE_PANEL;
Jesse Barnes79e53942008-11-07 14:24:08 -0800182
183 return MODE_OK;
184}
185
Chris Wilson49be6632010-07-18 12:05:54 +0100186static void
187centre_horizontally(struct drm_display_mode *mode,
188 int width)
189{
190 u32 border, sync_pos, blank_width, sync_width;
191
192 /* keep the hsync and hblank widths constant */
193 sync_width = mode->crtc_hsync_end - mode->crtc_hsync_start;
194 blank_width = mode->crtc_hblank_end - mode->crtc_hblank_start;
195 sync_pos = (blank_width - sync_width + 1) / 2;
196
197 border = (mode->hdisplay - width + 1) / 2;
198 border += border & 1; /* make the border even */
199
200 mode->crtc_hdisplay = width;
201 mode->crtc_hblank_start = width + border;
202 mode->crtc_hblank_end = mode->crtc_hblank_start + blank_width;
203
204 mode->crtc_hsync_start = mode->crtc_hblank_start + sync_pos;
205 mode->crtc_hsync_end = mode->crtc_hsync_start + sync_width;
Daniel Vetterf9bef082012-04-15 19:53:19 +0200206
207 mode->private_flags |= INTEL_MODE_CRTC_TIMINGS_SET;
Chris Wilson49be6632010-07-18 12:05:54 +0100208}
209
210static void
211centre_vertically(struct drm_display_mode *mode,
212 int height)
213{
214 u32 border, sync_pos, blank_width, sync_width;
215
216 /* keep the vsync and vblank widths constant */
217 sync_width = mode->crtc_vsync_end - mode->crtc_vsync_start;
218 blank_width = mode->crtc_vblank_end - mode->crtc_vblank_start;
219 sync_pos = (blank_width - sync_width + 1) / 2;
220
221 border = (mode->vdisplay - height + 1) / 2;
222
223 mode->crtc_vdisplay = height;
224 mode->crtc_vblank_start = height + border;
225 mode->crtc_vblank_end = mode->crtc_vblank_start + blank_width;
226
227 mode->crtc_vsync_start = mode->crtc_vblank_start + sync_pos;
228 mode->crtc_vsync_end = mode->crtc_vsync_start + sync_width;
Daniel Vetterf9bef082012-04-15 19:53:19 +0200229
230 mode->private_flags |= INTEL_MODE_CRTC_TIMINGS_SET;
Chris Wilson49be6632010-07-18 12:05:54 +0100231}
232
233static inline u32 panel_fitter_scaling(u32 source, u32 target)
234{
235 /*
236 * Floating point operation is not supported. So the FACTOR
237 * is defined, which can avoid the floating point computation
238 * when calculating the panel ratio.
239 */
240#define ACCURACY 12
241#define FACTOR (1 << ACCURACY)
242 u32 ratio = source * FACTOR / target;
243 return (FACTOR * ratio + FACTOR/2) / FACTOR;
244}
245
Jesse Barnes79e53942008-11-07 14:24:08 -0800246static bool intel_lvds_mode_fixup(struct drm_encoder *encoder,
Laurent Pincharte811f5a2012-07-17 17:56:50 +0200247 const struct drm_display_mode *mode,
Jesse Barnes79e53942008-11-07 14:24:08 -0800248 struct drm_display_mode *adjusted_mode)
249{
250 struct drm_device *dev = encoder->dev;
251 struct drm_i915_private *dev_priv = dev->dev_private;
Chris Wilson788319d2010-09-12 17:34:41 +0100252 struct intel_lvds *intel_lvds = to_intel_lvds(encoder);
Daniel Vettere24c5c22012-07-08 20:17:15 +0200253 struct intel_crtc *intel_crtc = intel_lvds->base.new_crtc;
Chris Wilson49be6632010-07-18 12:05:54 +0100254 u32 pfit_control = 0, pfit_pgm_ratios = 0, border = 0;
Jesse Barnes9db4a9c2011-02-07 12:26:52 -0800255 int pipe;
Jesse Barnes79e53942008-11-07 14:24:08 -0800256
257 /* Should never happen!! */
Chris Wilsona6c45cf2010-09-17 00:32:17 +0100258 if (INTEL_INFO(dev)->gen < 4 && intel_crtc->pipe == 0) {
Keith Packard1ae8c0a2009-06-28 15:42:17 -0700259 DRM_ERROR("Can't support LVDS on pipe A\n");
Jesse Barnes79e53942008-11-07 14:24:08 -0800260 return false;
261 }
262
Daniel Vettere24c5c22012-07-08 20:17:15 +0200263 if (intel_encoder_check_is_cloned(&intel_lvds->base))
264 return false;
Chris Wilson1d8e1c72010-08-07 11:01:28 +0100265
Jesse Barnes79e53942008-11-07 14:24:08 -0800266 /*
Chris Wilson71677042010-07-17 13:38:43 +0100267 * We have timings from the BIOS for the panel, put them in
Jesse Barnes79e53942008-11-07 14:24:08 -0800268 * to the adjusted mode. The CRTC will be set up for this mode,
269 * with the panel scaling set up to source from the H/VDisplay
270 * of the original mode.
271 */
Chris Wilson788319d2010-09-12 17:34:41 +0100272 intel_fixed_panel_mode(intel_lvds->fixed_mode, adjusted_mode);
Chris Wilson1d8e1c72010-08-07 11:01:28 +0100273
274 if (HAS_PCH_SPLIT(dev)) {
275 intel_pch_panel_fitting(dev, intel_lvds->fitting_mode,
276 mode, adjusted_mode);
277 return true;
278 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800279
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800280 /* Native modes don't need fitting */
281 if (adjusted_mode->hdisplay == mode->hdisplay &&
Chris Wilson49be6632010-07-18 12:05:54 +0100282 adjusted_mode->vdisplay == mode->vdisplay)
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800283 goto out;
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800284
285 /* 965+ wants fuzzy fitting */
Chris Wilsona6c45cf2010-09-17 00:32:17 +0100286 if (INTEL_INFO(dev)->gen >= 4)
Chris Wilson49be6632010-07-18 12:05:54 +0100287 pfit_control |= ((intel_crtc->pipe << PFIT_PIPE_SHIFT) |
288 PFIT_FILTER_FUZZY);
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800289
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800290 /*
291 * Enable automatic panel scaling for non-native modes so that they fill
292 * the screen. Should be enabled before the pipe is enabled, according
293 * to register description and PRM.
294 * Change the value here to see the borders for debugging
295 */
Jesse Barnes9db4a9c2011-02-07 12:26:52 -0800296 for_each_pipe(pipe)
297 I915_WRITE(BCLRPAT(pipe), 0);
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800298
Daniel Vetterf9bef082012-04-15 19:53:19 +0200299 drm_mode_set_crtcinfo(adjusted_mode, 0);
300
Chris Wilsonea5b2132010-08-04 13:50:23 +0100301 switch (intel_lvds->fitting_mode) {
Jesse Barnes53bd8382009-07-01 10:04:40 -0700302 case DRM_MODE_SCALE_CENTER:
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800303 /*
304 * For centered modes, we have to calculate border widths &
305 * heights and modify the values programmed into the CRTC.
306 */
Chris Wilson49be6632010-07-18 12:05:54 +0100307 centre_horizontally(adjusted_mode, mode->hdisplay);
308 centre_vertically(adjusted_mode, mode->vdisplay);
309 border = LVDS_BORDER_ENABLE;
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800310 break;
Chris Wilson49be6632010-07-18 12:05:54 +0100311
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800312 case DRM_MODE_SCALE_ASPECT:
Chris Wilson49be6632010-07-18 12:05:54 +0100313 /* Scale but preserve the aspect ratio */
Chris Wilsona6c45cf2010-09-17 00:32:17 +0100314 if (INTEL_INFO(dev)->gen >= 4) {
Chris Wilson49be6632010-07-18 12:05:54 +0100315 u32 scaled_width = adjusted_mode->hdisplay * mode->vdisplay;
316 u32 scaled_height = mode->hdisplay * adjusted_mode->vdisplay;
317
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800318 /* 965+ is easy, it does everything in hw */
Chris Wilson49be6632010-07-18 12:05:54 +0100319 if (scaled_width > scaled_height)
Chris Wilson257e48f2010-11-29 16:19:24 +0000320 pfit_control |= PFIT_ENABLE | PFIT_SCALING_PILLAR;
Chris Wilson49be6632010-07-18 12:05:54 +0100321 else if (scaled_width < scaled_height)
Chris Wilson257e48f2010-11-29 16:19:24 +0000322 pfit_control |= PFIT_ENABLE | PFIT_SCALING_LETTER;
323 else if (adjusted_mode->hdisplay != mode->hdisplay)
324 pfit_control |= PFIT_ENABLE | PFIT_SCALING_AUTO;
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800325 } else {
Chris Wilson49be6632010-07-18 12:05:54 +0100326 u32 scaled_width = adjusted_mode->hdisplay * mode->vdisplay;
327 u32 scaled_height = mode->hdisplay * adjusted_mode->vdisplay;
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800328 /*
329 * For earlier chips we have to calculate the scaling
330 * ratio by hand and program it into the
331 * PFIT_PGM_RATIO register
332 */
Chris Wilson49be6632010-07-18 12:05:54 +0100333 if (scaled_width > scaled_height) { /* pillar */
334 centre_horizontally(adjusted_mode, scaled_height / mode->vdisplay);
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800335
Chris Wilson49be6632010-07-18 12:05:54 +0100336 border = LVDS_BORDER_ENABLE;
337 if (mode->vdisplay != adjusted_mode->vdisplay) {
338 u32 bits = panel_fitter_scaling(mode->vdisplay, adjusted_mode->vdisplay);
339 pfit_pgm_ratios |= (bits << PFIT_HORIZ_SCALE_SHIFT |
340 bits << PFIT_VERT_SCALE_SHIFT);
341 pfit_control |= (PFIT_ENABLE |
342 VERT_INTERP_BILINEAR |
343 HORIZ_INTERP_BILINEAR);
344 }
345 } else if (scaled_width < scaled_height) { /* letter */
346 centre_vertically(adjusted_mode, scaled_width / mode->hdisplay);
347
348 border = LVDS_BORDER_ENABLE;
349 if (mode->hdisplay != adjusted_mode->hdisplay) {
350 u32 bits = panel_fitter_scaling(mode->hdisplay, adjusted_mode->hdisplay);
351 pfit_pgm_ratios |= (bits << PFIT_HORIZ_SCALE_SHIFT |
352 bits << PFIT_VERT_SCALE_SHIFT);
353 pfit_control |= (PFIT_ENABLE |
354 VERT_INTERP_BILINEAR |
355 HORIZ_INTERP_BILINEAR);
356 }
357 } else
358 /* Aspects match, Let hw scale both directions */
359 pfit_control |= (PFIT_ENABLE |
360 VERT_AUTO_SCALE | HORIZ_AUTO_SCALE |
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800361 VERT_INTERP_BILINEAR |
362 HORIZ_INTERP_BILINEAR);
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800363 }
364 break;
365
366 case DRM_MODE_SCALE_FULLSCREEN:
367 /*
368 * Full scaling, even if it changes the aspect ratio.
369 * Fortunately this is all done for us in hw.
370 */
Chris Wilson257e48f2010-11-29 16:19:24 +0000371 if (mode->vdisplay != adjusted_mode->vdisplay ||
372 mode->hdisplay != adjusted_mode->hdisplay) {
373 pfit_control |= PFIT_ENABLE;
374 if (INTEL_INFO(dev)->gen >= 4)
375 pfit_control |= PFIT_SCALING_AUTO;
376 else
377 pfit_control |= (VERT_AUTO_SCALE |
378 VERT_INTERP_BILINEAR |
379 HORIZ_AUTO_SCALE |
380 HORIZ_INTERP_BILINEAR);
381 }
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800382 break;
Chris Wilson49be6632010-07-18 12:05:54 +0100383
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800384 default:
385 break;
386 }
387
388out:
Chris Wilson72389a32011-02-06 15:50:52 +0000389 /* If not enabling scaling, be consistent and always use 0. */
Chris Wilsonbee17e52011-01-11 18:09:58 +0000390 if ((pfit_control & PFIT_ENABLE) == 0) {
391 pfit_control = 0;
392 pfit_pgm_ratios = 0;
393 }
Chris Wilson72389a32011-02-06 15:50:52 +0000394
395 /* Make sure pre-965 set dither correctly */
396 if (INTEL_INFO(dev)->gen < 4 && dev_priv->lvds_dither)
397 pfit_control |= PANEL_8TO6_DITHER_ENABLE;
398
Chris Wilsone9e331a2010-09-13 01:16:10 +0100399 if (pfit_control != intel_lvds->pfit_control ||
400 pfit_pgm_ratios != intel_lvds->pfit_pgm_ratios) {
401 intel_lvds->pfit_control = pfit_control;
402 intel_lvds->pfit_pgm_ratios = pfit_pgm_ratios;
403 intel_lvds->pfit_dirty = true;
404 }
Chris Wilson49be6632010-07-18 12:05:54 +0100405 dev_priv->lvds_border_bits = border;
406
Zhao Yakuia3e17eb2009-10-10 10:42:37 +0800407 /*
Jesse Barnes79e53942008-11-07 14:24:08 -0800408 * XXX: It would be nice to support lower refresh rates on the
409 * panels to reduce power consumption, and perhaps match the
410 * user's requested refresh rate.
411 */
412
413 return true;
414}
415
Jesse Barnes79e53942008-11-07 14:24:08 -0800416static void intel_lvds_mode_set(struct drm_encoder *encoder,
417 struct drm_display_mode *mode,
418 struct drm_display_mode *adjusted_mode)
419{
Jesse Barnes79e53942008-11-07 14:24:08 -0800420 /*
421 * The LVDS pin pair will already have been turned on in the
422 * intel_crtc_mode_set since it has a large impact on the DPLL
423 * settings.
424 */
Jesse Barnes79e53942008-11-07 14:24:08 -0800425}
426
427/**
428 * Detect the LVDS connection.
429 *
Jesse Barnesb42d4c52009-09-10 15:28:04 -0700430 * Since LVDS doesn't have hotlug, we use the lid as a proxy. Open means
431 * connected and closed means disconnected. We also send hotplug events as
432 * needed, using lid status notification from the input layer.
Jesse Barnes79e53942008-11-07 14:24:08 -0800433 */
Chris Wilson7b334fc2010-09-09 23:51:02 +0100434static enum drm_connector_status
Chris Wilson930a9e22010-09-14 11:07:23 +0100435intel_lvds_detect(struct drm_connector *connector, bool force)
Jesse Barnes79e53942008-11-07 14:24:08 -0800436{
Jesse Barnes7b9c5ab2010-02-12 09:30:00 -0800437 struct drm_device *dev = connector->dev;
Chris Wilson6ee3b5a2011-03-24 13:26:43 +0000438 enum drm_connector_status status;
Jesse Barnesb42d4c52009-09-10 15:28:04 -0700439
Chris Wilsonfe16d942011-02-12 10:29:38 +0000440 status = intel_panel_detect(dev);
441 if (status != connector_status_unknown)
442 return status;
Chris Wilson01fe9db2011-01-16 19:37:30 +0000443
Chris Wilson6ee3b5a2011-03-24 13:26:43 +0000444 return connector_status_connected;
Jesse Barnes79e53942008-11-07 14:24:08 -0800445}
446
447/**
448 * Return the list of DDC modes if available, or the BIOS fixed mode otherwise.
449 */
450static int intel_lvds_get_modes(struct drm_connector *connector)
451{
Chris Wilson788319d2010-09-12 17:34:41 +0100452 struct intel_lvds *intel_lvds = intel_attached_lvds(connector);
Jesse Barnes79e53942008-11-07 14:24:08 -0800453 struct drm_device *dev = connector->dev;
Chris Wilson788319d2010-09-12 17:34:41 +0100454 struct drm_display_mode *mode;
Jesse Barnes79e53942008-11-07 14:24:08 -0800455
Chris Wilson3f8ff0e2010-11-08 23:20:52 +0000456 if (intel_lvds->edid)
Chris Wilson219adae2010-09-16 23:05:10 +0100457 return drm_add_edid_modes(connector, intel_lvds->edid);
Jesse Barnes79e53942008-11-07 14:24:08 -0800458
Chris Wilson788319d2010-09-12 17:34:41 +0100459 mode = drm_mode_duplicate(dev, intel_lvds->fixed_mode);
Chris Wilson311bd682011-01-13 19:06:50 +0000460 if (mode == NULL)
Chris Wilson788319d2010-09-12 17:34:41 +0100461 return 0;
Jesse Barnes79e53942008-11-07 14:24:08 -0800462
Chris Wilson788319d2010-09-12 17:34:41 +0100463 drm_mode_probed_add(connector, mode);
464 return 1;
Jesse Barnes79e53942008-11-07 14:24:08 -0800465}
466
Thomas Bächler0544edf2010-07-02 10:44:23 +0200467static int intel_no_modeset_on_lid_dmi_callback(const struct dmi_system_id *id)
468{
Daniel Vetterbc0daf42012-04-01 13:16:49 +0200469 DRM_INFO("Skipping forced modeset for %s\n", id->ident);
Thomas Bächler0544edf2010-07-02 10:44:23 +0200470 return 1;
471}
472
473/* The GPU hangs up on these systems if modeset is performed on LID open */
474static const struct dmi_system_id intel_no_modeset_on_lid[] = {
475 {
476 .callback = intel_no_modeset_on_lid_dmi_callback,
477 .ident = "Toshiba Tecra A11",
478 .matches = {
479 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
480 DMI_MATCH(DMI_PRODUCT_NAME, "TECRA A11"),
481 },
482 },
483
484 { } /* terminating entry */
485};
486
Linus Torvaldsc9354c82009-11-02 09:29:55 -0800487/*
488 * Lid events. Note the use of 'modeset_on_lid':
489 * - we set it on lid close, and reset it on open
490 * - we use it as a "only once" bit (ie we ignore
491 * duplicate events where it was already properly
492 * set/reset)
493 * - the suspend/resume paths will also set it to
494 * zero, since they restore the mode ("lid open").
495 */
Jesse Barnesc1c7af62009-09-10 15:28:03 -0700496static int intel_lid_notify(struct notifier_block *nb, unsigned long val,
497 void *unused)
498{
499 struct drm_i915_private *dev_priv =
500 container_of(nb, struct drm_i915_private, lid_notifier);
501 struct drm_device *dev = dev_priv->dev;
Zhao Yakuia2565372009-12-11 09:26:11 +0800502 struct drm_connector *connector = dev_priv->int_lvds_connector;
Jesse Barnesc1c7af62009-09-10 15:28:03 -0700503
Alex Williamson2fb4e612011-04-21 16:08:14 -0600504 if (dev->switch_power_state != DRM_SWITCH_POWER_ON)
505 return NOTIFY_OK;
506
Zhao Yakuia2565372009-12-11 09:26:11 +0800507 /*
508 * check and update the status of LVDS connector after receiving
509 * the LID nofication event.
510 */
511 if (connector)
Chris Wilson7b334fc2010-09-09 23:51:02 +0100512 connector->status = connector->funcs->detect(connector,
Chris Wilson930a9e22010-09-14 11:07:23 +0100513 false);
Chris Wilson7b334fc2010-09-09 23:51:02 +0100514
Thomas Bächler0544edf2010-07-02 10:44:23 +0200515 /* Don't force modeset on machines where it causes a GPU lockup */
516 if (dmi_check_system(intel_no_modeset_on_lid))
517 return NOTIFY_OK;
Linus Torvaldsc9354c82009-11-02 09:29:55 -0800518 if (!acpi_lid_open()) {
519 dev_priv->modeset_on_lid = 1;
520 return NOTIFY_OK;
Jesse Barnes06891e22009-09-14 10:58:48 -0700521 }
Jesse Barnesc1c7af62009-09-10 15:28:03 -0700522
Linus Torvaldsc9354c82009-11-02 09:29:55 -0800523 if (!dev_priv->modeset_on_lid)
524 return NOTIFY_OK;
525
526 dev_priv->modeset_on_lid = 0;
527
528 mutex_lock(&dev->mode_config.mutex);
Daniel Vetter3b7a89f2012-09-17 22:27:21 +0200529 intel_modeset_check_state(dev);
Linus Torvaldsc9354c82009-11-02 09:29:55 -0800530 mutex_unlock(&dev->mode_config.mutex);
Jesse Barnes06324192009-09-10 15:28:05 -0700531
Jesse Barnesc1c7af62009-09-10 15:28:03 -0700532 return NOTIFY_OK;
533}
534
Jesse Barnes79e53942008-11-07 14:24:08 -0800535/**
536 * intel_lvds_destroy - unregister and free LVDS structures
537 * @connector: connector to free
538 *
539 * Unregister the DDC bus for this connector then free the driver private
540 * structure.
541 */
542static void intel_lvds_destroy(struct drm_connector *connector)
543{
Jesse Barnesc1c7af62009-09-10 15:28:03 -0700544 struct drm_device *dev = connector->dev;
Jesse Barnesc1c7af62009-09-10 15:28:03 -0700545 struct drm_i915_private *dev_priv = dev->dev_private;
Jesse Barnes79e53942008-11-07 14:24:08 -0800546
Matthew Garrettaaa6fd22011-08-12 12:11:33 +0200547 intel_panel_destroy_backlight(dev);
548
Jesse Barnesc1c7af62009-09-10 15:28:03 -0700549 if (dev_priv->lid_notifier.notifier_call)
550 acpi_lid_notifier_unregister(&dev_priv->lid_notifier);
Jesse Barnes79e53942008-11-07 14:24:08 -0800551 drm_sysfs_connector_remove(connector);
552 drm_connector_cleanup(connector);
553 kfree(connector);
554}
555
Jesse Barnes335041e2009-01-22 22:22:06 +1000556static int intel_lvds_set_property(struct drm_connector *connector,
557 struct drm_property *property,
558 uint64_t value)
559{
Chris Wilson788319d2010-09-12 17:34:41 +0100560 struct intel_lvds *intel_lvds = intel_attached_lvds(connector);
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800561 struct drm_device *dev = connector->dev;
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800562
Chris Wilson788319d2010-09-12 17:34:41 +0100563 if (property == dev->mode_config.scaling_mode_property) {
564 struct drm_crtc *crtc = intel_lvds->base.base.crtc;
Zhenyu Wangbb8a3562010-03-29 16:40:50 +0800565
Jesse Barnes53bd8382009-07-01 10:04:40 -0700566 if (value == DRM_MODE_SCALE_NONE) {
567 DRM_DEBUG_KMS("no scaling not supported\n");
Chris Wilson788319d2010-09-12 17:34:41 +0100568 return -EINVAL;
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800569 }
Chris Wilson788319d2010-09-12 17:34:41 +0100570
Chris Wilsonea5b2132010-08-04 13:50:23 +0100571 if (intel_lvds->fitting_mode == value) {
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800572 /* the LVDS scaling property is not changed */
573 return 0;
574 }
Chris Wilsonea5b2132010-08-04 13:50:23 +0100575 intel_lvds->fitting_mode = value;
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800576 if (crtc && crtc->enabled) {
577 /*
578 * If the CRTC is enabled, the display will be changed
579 * according to the new panel fitting mode.
580 */
Daniel Vettera6778b32012-07-02 09:56:42 +0200581 intel_set_mode(crtc, &crtc->mode,
582 crtc->x, crtc->y, crtc->fb);
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800583 }
584 }
585
Jesse Barnes335041e2009-01-22 22:22:06 +1000586 return 0;
587}
588
Jesse Barnes79e53942008-11-07 14:24:08 -0800589static const struct drm_encoder_helper_funcs intel_lvds_helper_funcs = {
Jesse Barnes79e53942008-11-07 14:24:08 -0800590 .mode_fixup = intel_lvds_mode_fixup,
Jesse Barnes79e53942008-11-07 14:24:08 -0800591 .mode_set = intel_lvds_mode_set,
Daniel Vetter1f703852012-07-11 16:51:39 +0200592 .disable = intel_encoder_noop,
Jesse Barnes79e53942008-11-07 14:24:08 -0800593};
594
595static const struct drm_connector_helper_funcs intel_lvds_connector_helper_funcs = {
596 .get_modes = intel_lvds_get_modes,
597 .mode_valid = intel_lvds_mode_valid,
Chris Wilsondf0e9242010-09-09 16:20:55 +0100598 .best_encoder = intel_best_encoder,
Jesse Barnes79e53942008-11-07 14:24:08 -0800599};
600
601static const struct drm_connector_funcs intel_lvds_connector_funcs = {
Daniel Vetterc22834e2012-06-30 15:31:28 +0200602 .dpms = intel_connector_dpms,
Jesse Barnes79e53942008-11-07 14:24:08 -0800603 .detect = intel_lvds_detect,
604 .fill_modes = drm_helper_probe_single_connector_modes,
Jesse Barnes335041e2009-01-22 22:22:06 +1000605 .set_property = intel_lvds_set_property,
Jesse Barnes79e53942008-11-07 14:24:08 -0800606 .destroy = intel_lvds_destroy,
607};
608
Jesse Barnes79e53942008-11-07 14:24:08 -0800609static const struct drm_encoder_funcs intel_lvds_enc_funcs = {
Chris Wilsonea5b2132010-08-04 13:50:23 +0100610 .destroy = intel_encoder_destroy,
Jesse Barnes79e53942008-11-07 14:24:08 -0800611};
612
Jarod Wilson425d2442009-05-05 10:00:25 -0400613static int __init intel_no_lvds_dmi_callback(const struct dmi_system_id *id)
614{
Daniel Vetterbc0daf42012-04-01 13:16:49 +0200615 DRM_INFO("Skipping LVDS initialization for %s\n", id->ident);
Jarod Wilson425d2442009-05-05 10:00:25 -0400616 return 1;
617}
Jesse Barnes79e53942008-11-07 14:24:08 -0800618
Jarod Wilson425d2442009-05-05 10:00:25 -0400619/* These systems claim to have LVDS, but really don't */
Jaswinder Singh Rajput93c05f22009-06-04 09:41:19 +1000620static const struct dmi_system_id intel_no_lvds[] = {
Jarod Wilson425d2442009-05-05 10:00:25 -0400621 {
622 .callback = intel_no_lvds_dmi_callback,
623 .ident = "Apple Mac Mini (Core series)",
624 .matches = {
Keith Packard98acd462009-06-14 12:31:58 -0700625 DMI_MATCH(DMI_SYS_VENDOR, "Apple"),
Jarod Wilson425d2442009-05-05 10:00:25 -0400626 DMI_MATCH(DMI_PRODUCT_NAME, "Macmini1,1"),
627 },
628 },
629 {
630 .callback = intel_no_lvds_dmi_callback,
631 .ident = "Apple Mac Mini (Core 2 series)",
632 .matches = {
Keith Packard98acd462009-06-14 12:31:58 -0700633 DMI_MATCH(DMI_SYS_VENDOR, "Apple"),
Jarod Wilson425d2442009-05-05 10:00:25 -0400634 DMI_MATCH(DMI_PRODUCT_NAME, "Macmini2,1"),
635 },
636 },
637 {
638 .callback = intel_no_lvds_dmi_callback,
639 .ident = "MSI IM-945GSE-A",
640 .matches = {
641 DMI_MATCH(DMI_SYS_VENDOR, "MSI"),
642 DMI_MATCH(DMI_PRODUCT_NAME, "A9830IMS"),
643 },
644 },
645 {
646 .callback = intel_no_lvds_dmi_callback,
647 .ident = "Dell Studio Hybrid",
648 .matches = {
649 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
650 DMI_MATCH(DMI_PRODUCT_NAME, "Studio Hybrid 140g"),
651 },
652 },
Jarod Wilson70aa96c2009-05-27 17:20:39 -0400653 {
654 .callback = intel_no_lvds_dmi_callback,
Pieterjan Camerlynckb0662542011-07-26 16:23:54 +0200655 .ident = "Dell OptiPlex FX170",
656 .matches = {
657 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
658 DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex FX170"),
659 },
660 },
661 {
662 .callback = intel_no_lvds_dmi_callback,
Jarod Wilson70aa96c2009-05-27 17:20:39 -0400663 .ident = "AOpen Mini PC",
664 .matches = {
665 DMI_MATCH(DMI_SYS_VENDOR, "AOpen"),
666 DMI_MATCH(DMI_PRODUCT_NAME, "i965GMx-IF"),
667 },
668 },
Michael Cousinfa0864b2009-06-05 21:16:22 +0200669 {
670 .callback = intel_no_lvds_dmi_callback,
Tormod Voldened8c7542009-07-13 22:26:48 +0200671 .ident = "AOpen Mini PC MP915",
672 .matches = {
673 DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
674 DMI_MATCH(DMI_BOARD_NAME, "i915GMx-F"),
675 },
676 },
677 {
678 .callback = intel_no_lvds_dmi_callback,
Knut Petersen22ab70d2011-01-14 15:38:10 +0000679 .ident = "AOpen i915GMm-HFS",
680 .matches = {
681 DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
682 DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"),
683 },
684 },
685 {
686 .callback = intel_no_lvds_dmi_callback,
Daniel Vettere57b6882012-02-08 16:42:52 +0100687 .ident = "AOpen i45GMx-I",
688 .matches = {
689 DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
690 DMI_MATCH(DMI_BOARD_NAME, "i45GMx-I"),
691 },
692 },
693 {
694 .callback = intel_no_lvds_dmi_callback,
Michael Cousinfa0864b2009-06-05 21:16:22 +0200695 .ident = "Aopen i945GTt-VFA",
696 .matches = {
697 DMI_MATCH(DMI_PRODUCT_VERSION, "AO00001JW"),
698 },
699 },
Stefan Bader9875557ee82010-03-29 17:53:12 +0200700 {
701 .callback = intel_no_lvds_dmi_callback,
702 .ident = "Clientron U800",
703 .matches = {
704 DMI_MATCH(DMI_SYS_VENDOR, "Clientron"),
705 DMI_MATCH(DMI_PRODUCT_NAME, "U800"),
706 },
707 },
Hans de Goede6a574b52011-06-04 15:39:21 +0200708 {
Joel Sass44306ab2012-01-10 13:03:55 -0500709 .callback = intel_no_lvds_dmi_callback,
710 .ident = "Clientron E830",
711 .matches = {
712 DMI_MATCH(DMI_SYS_VENDOR, "Clientron"),
713 DMI_MATCH(DMI_PRODUCT_NAME, "E830"),
714 },
715 },
716 {
Hans de Goede6a574b52011-06-04 15:39:21 +0200717 .callback = intel_no_lvds_dmi_callback,
718 .ident = "Asus EeeBox PC EB1007",
719 .matches = {
720 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer INC."),
721 DMI_MATCH(DMI_PRODUCT_NAME, "EB1007"),
722 },
723 },
Adam Jackson0999bbe2011-11-28 12:22:56 -0500724 {
725 .callback = intel_no_lvds_dmi_callback,
726 .ident = "Asus AT5NM10T-I",
727 .matches = {
728 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
729 DMI_MATCH(DMI_BOARD_NAME, "AT5NM10T-I"),
730 },
731 },
Marc Gariepyf5b8a7e2012-02-09 09:35:21 -0500732 {
733 .callback = intel_no_lvds_dmi_callback,
Jan-Benedict Glaw33471112012-05-22 15:21:53 +0200734 .ident = "Hewlett-Packard HP t5740e Thin Client",
735 .matches = {
736 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
737 DMI_MATCH(DMI_PRODUCT_NAME, "HP t5740e Thin Client"),
738 },
739 },
740 {
741 .callback = intel_no_lvds_dmi_callback,
Marc Gariepyf5b8a7e2012-02-09 09:35:21 -0500742 .ident = "Hewlett-Packard t5745",
743 .matches = {
744 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
Marc Gariepy62004972012-05-01 13:37:57 -0400745 DMI_MATCH(DMI_PRODUCT_NAME, "hp t5745"),
Marc Gariepyf5b8a7e2012-02-09 09:35:21 -0500746 },
747 },
748 {
749 .callback = intel_no_lvds_dmi_callback,
750 .ident = "Hewlett-Packard st5747",
751 .matches = {
752 DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
Marc Gariepy62004972012-05-01 13:37:57 -0400753 DMI_MATCH(DMI_PRODUCT_NAME, "hp st5747"),
Marc Gariepyf5b8a7e2012-02-09 09:35:21 -0500754 },
755 },
Anisse Astier97effad2012-03-07 18:36:35 +0100756 {
757 .callback = intel_no_lvds_dmi_callback,
758 .ident = "MSI Wind Box DC500",
759 .matches = {
760 DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
761 DMI_MATCH(DMI_BOARD_NAME, "MS-7469"),
762 },
763 },
Sjoerd Simons9756fe32012-06-22 09:43:07 +0200764 {
765 .callback = intel_no_lvds_dmi_callback,
766 .ident = "ZOTAC ZBOXSD-ID12/ID13",
767 .matches = {
768 DMI_MATCH(DMI_BOARD_VENDOR, "ZOTAC"),
769 DMI_MATCH(DMI_BOARD_NAME, "ZBOXSD-ID12/ID13"),
770 },
771 },
Calvin Waltona51d4ed2012-08-24 07:56:31 -0400772 {
773 .callback = intel_no_lvds_dmi_callback,
774 .ident = "Gigabyte GA-D525TUD",
775 .matches = {
776 DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co., Ltd."),
777 DMI_MATCH(DMI_BOARD_NAME, "D525TUD"),
778 },
779 },
Chris Wilsonc31407a2012-10-18 21:07:01 +0100780 {
781 .callback = intel_no_lvds_dmi_callback,
782 .ident = "Supermicro X7SPA-H",
783 .matches = {
784 DMI_MATCH(DMI_SYS_VENDOR, "Supermicro"),
785 DMI_MATCH(DMI_PRODUCT_NAME, "X7SPA-H"),
786 },
787 },
Jarod Wilson425d2442009-05-05 10:00:25 -0400788
789 { } /* terminating entry */
790};
Jesse Barnes79e53942008-11-07 14:24:08 -0800791
792/**
Zhao Yakui18f9ed12009-11-20 03:24:16 +0000793 * intel_find_lvds_downclock - find the reduced downclock for LVDS in EDID
794 * @dev: drm device
795 * @connector: LVDS connector
796 *
797 * Find the reduced downclock for LVDS in EDID.
798 */
799static void intel_find_lvds_downclock(struct drm_device *dev,
Chris Wilson788319d2010-09-12 17:34:41 +0100800 struct drm_display_mode *fixed_mode,
801 struct drm_connector *connector)
Zhao Yakui18f9ed12009-11-20 03:24:16 +0000802{
803 struct drm_i915_private *dev_priv = dev->dev_private;
Chris Wilson788319d2010-09-12 17:34:41 +0100804 struct drm_display_mode *scan;
Zhao Yakui18f9ed12009-11-20 03:24:16 +0000805 int temp_downclock;
806
Chris Wilson788319d2010-09-12 17:34:41 +0100807 temp_downclock = fixed_mode->clock;
Zhao Yakui18f9ed12009-11-20 03:24:16 +0000808 list_for_each_entry(scan, &connector->probed_modes, head) {
809 /*
810 * If one mode has the same resolution with the fixed_panel
811 * mode while they have the different refresh rate, it means
812 * that the reduced downclock is found for the LVDS. In such
813 * case we can set the different FPx0/1 to dynamically select
814 * between low and high frequency.
815 */
Chris Wilson788319d2010-09-12 17:34:41 +0100816 if (scan->hdisplay == fixed_mode->hdisplay &&
817 scan->hsync_start == fixed_mode->hsync_start &&
818 scan->hsync_end == fixed_mode->hsync_end &&
819 scan->htotal == fixed_mode->htotal &&
820 scan->vdisplay == fixed_mode->vdisplay &&
821 scan->vsync_start == fixed_mode->vsync_start &&
822 scan->vsync_end == fixed_mode->vsync_end &&
823 scan->vtotal == fixed_mode->vtotal) {
Zhao Yakui18f9ed12009-11-20 03:24:16 +0000824 if (scan->clock < temp_downclock) {
825 /*
826 * The downclock is already found. But we
827 * expect to find the lower downclock.
828 */
829 temp_downclock = scan->clock;
830 }
831 }
832 }
Chris Wilson788319d2010-09-12 17:34:41 +0100833 if (temp_downclock < fixed_mode->clock && i915_lvds_downclock) {
Zhao Yakui18f9ed12009-11-20 03:24:16 +0000834 /* We found the downclock for LVDS. */
835 dev_priv->lvds_downclock_avail = 1;
836 dev_priv->lvds_downclock = temp_downclock;
837 DRM_DEBUG_KMS("LVDS downclock is found in EDID. "
Chris Wilson788319d2010-09-12 17:34:41 +0100838 "Normal clock %dKhz, downclock %dKhz\n",
839 fixed_mode->clock, temp_downclock);
Zhao Yakui18f9ed12009-11-20 03:24:16 +0000840 }
Zhao Yakui18f9ed12009-11-20 03:24:16 +0000841}
842
Zhao Yakui7cf4f692009-11-24 09:48:47 +0800843/*
844 * Enumerate the child dev array parsed from VBT to check whether
845 * the LVDS is present.
846 * If it is present, return 1.
847 * If it is not present, return false.
848 * If no child dev is parsed from VBT, it assumes that the LVDS is present.
Zhao Yakui7cf4f692009-11-24 09:48:47 +0800849 */
Chris Wilson270eea02010-09-24 01:15:02 +0100850static bool lvds_is_present_in_vbt(struct drm_device *dev,
851 u8 *i2c_pin)
Zhao Yakui7cf4f692009-11-24 09:48:47 +0800852{
853 struct drm_i915_private *dev_priv = dev->dev_private;
Chris Wilson425904d2010-08-22 18:21:42 +0100854 int i;
Zhao Yakui7cf4f692009-11-24 09:48:47 +0800855
856 if (!dev_priv->child_dev_num)
Chris Wilson425904d2010-08-22 18:21:42 +0100857 return true;
Zhao Yakui7cf4f692009-11-24 09:48:47 +0800858
Zhao Yakui7cf4f692009-11-24 09:48:47 +0800859 for (i = 0; i < dev_priv->child_dev_num; i++) {
Chris Wilson425904d2010-08-22 18:21:42 +0100860 struct child_device_config *child = dev_priv->child_dev + i;
861
862 /* If the device type is not LFP, continue.
863 * We have to check both the new identifiers as well as the
864 * old for compatibility with some BIOSes.
Zhao Yakui7cf4f692009-11-24 09:48:47 +0800865 */
Chris Wilson425904d2010-08-22 18:21:42 +0100866 if (child->device_type != DEVICE_TYPE_INT_LFP &&
867 child->device_type != DEVICE_TYPE_LFP)
Zhao Yakui7cf4f692009-11-24 09:48:47 +0800868 continue;
869
Daniel Kurtz3bd7d902012-03-28 02:36:14 +0800870 if (intel_gmbus_is_port_valid(child->i2c_pin))
871 *i2c_pin = child->i2c_pin;
Chris Wilson270eea02010-09-24 01:15:02 +0100872
Chris Wilson425904d2010-08-22 18:21:42 +0100873 /* However, we cannot trust the BIOS writers to populate
874 * the VBT correctly. Since LVDS requires additional
875 * information from AIM blocks, a non-zero addin offset is
876 * a good indicator that the LVDS is actually present.
Zhao Yakui7cf4f692009-11-24 09:48:47 +0800877 */
Chris Wilson425904d2010-08-22 18:21:42 +0100878 if (child->addin_offset)
879 return true;
880
881 /* But even then some BIOS writers perform some black magic
882 * and instantiate the device without reference to any
883 * additional data. Trust that if the VBT was written into
884 * the OpRegion then they have validated the LVDS's existence.
885 */
886 if (dev_priv->opregion.vbt)
887 return true;
Zhao Yakui7cf4f692009-11-24 09:48:47 +0800888 }
Chris Wilson425904d2010-08-22 18:21:42 +0100889
890 return false;
Zhao Yakui7cf4f692009-11-24 09:48:47 +0800891}
892
Chris Wilsonf3cfcba2012-02-09 09:35:53 +0000893static bool intel_lvds_supported(struct drm_device *dev)
894{
895 /* With the introduction of the PCH we gained a dedicated
896 * LVDS presence pin, use it. */
897 if (HAS_PCH_SPLIT(dev))
898 return true;
899
900 /* Otherwise LVDS was only attached to mobile products,
901 * except for the inglorious 830gm */
902 return IS_MOBILE(dev) && !IS_I830(dev);
903}
904
Zhao Yakui18f9ed12009-11-20 03:24:16 +0000905/**
Jesse Barnes79e53942008-11-07 14:24:08 -0800906 * intel_lvds_init - setup LVDS connectors on this device
907 * @dev: drm device
908 *
909 * Create the connector, register the LVDS DDC bus, and try to figure out what
910 * modes we can display on the LVDS panel (if present).
911 */
Chris Wilsonc5d1b512010-11-29 18:00:23 +0000912bool intel_lvds_init(struct drm_device *dev)
Jesse Barnes79e53942008-11-07 14:24:08 -0800913{
914 struct drm_i915_private *dev_priv = dev->dev_private;
Chris Wilsonea5b2132010-08-04 13:50:23 +0100915 struct intel_lvds *intel_lvds;
Eric Anholt21d40d32010-03-25 11:11:14 -0700916 struct intel_encoder *intel_encoder;
Zhenyu Wangbb8a3562010-03-29 16:40:50 +0800917 struct intel_connector *intel_connector;
Jesse Barnes79e53942008-11-07 14:24:08 -0800918 struct drm_connector *connector;
919 struct drm_encoder *encoder;
920 struct drm_display_mode *scan; /* *modes, *bios_mode; */
921 struct drm_crtc *crtc;
922 u32 lvds;
Chris Wilson270eea02010-09-24 01:15:02 +0100923 int pipe;
924 u8 pin;
Jesse Barnes79e53942008-11-07 14:24:08 -0800925
Chris Wilsonf3cfcba2012-02-09 09:35:53 +0000926 if (!intel_lvds_supported(dev))
927 return false;
928
Jarod Wilson425d2442009-05-05 10:00:25 -0400929 /* Skip init on machines we know falsely report LVDS */
930 if (dmi_check_system(intel_no_lvds))
Chris Wilsonc5d1b512010-11-29 18:00:23 +0000931 return false;
Paul Collins565dcd42009-02-04 23:05:41 +1300932
Chris Wilson270eea02010-09-24 01:15:02 +0100933 pin = GMBUS_PORT_PANEL;
934 if (!lvds_is_present_in_vbt(dev, &pin)) {
Matthew Garrett11ba1592009-12-15 13:55:24 -0500935 DRM_DEBUG_KMS("LVDS is not present in VBT\n");
Chris Wilsonc5d1b512010-11-29 18:00:23 +0000936 return false;
Zhao Yakui7cf4f692009-11-24 09:48:47 +0800937 }
Zhao Yakuie99da352009-06-26 09:46:18 +0800938
Eric Anholtc619eed2010-01-28 16:45:52 -0800939 if (HAS_PCH_SPLIT(dev)) {
Zhenyu Wang541998a2009-06-05 15:38:44 +0800940 if ((I915_READ(PCH_LVDS) & LVDS_DETECTED) == 0)
Chris Wilsonc5d1b512010-11-29 18:00:23 +0000941 return false;
Chris Wilson5ceb0f92010-09-24 10:24:28 +0100942 if (dev_priv->edp.support) {
Zhao Yakui28c97732009-10-09 11:39:41 +0800943 DRM_DEBUG_KMS("disable LVDS for eDP support\n");
Chris Wilsonc5d1b512010-11-29 18:00:23 +0000944 return false;
Zhenyu Wang32f9d652009-07-24 01:00:32 +0800945 }
Zhenyu Wang541998a2009-06-05 15:38:44 +0800946 }
947
Chris Wilsonea5b2132010-08-04 13:50:23 +0100948 intel_lvds = kzalloc(sizeof(struct intel_lvds), GFP_KERNEL);
949 if (!intel_lvds) {
Chris Wilsonc5d1b512010-11-29 18:00:23 +0000950 return false;
Jesse Barnes79e53942008-11-07 14:24:08 -0800951 }
952
Zhenyu Wangbb8a3562010-03-29 16:40:50 +0800953 intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
954 if (!intel_connector) {
Chris Wilsonea5b2132010-08-04 13:50:23 +0100955 kfree(intel_lvds);
Chris Wilsonc5d1b512010-11-29 18:00:23 +0000956 return false;
Zhenyu Wangbb8a3562010-03-29 16:40:50 +0800957 }
958
Chris Wilsone9e331a2010-09-13 01:16:10 +0100959 if (!HAS_PCH_SPLIT(dev)) {
960 intel_lvds->pfit_control = I915_READ(PFIT_CONTROL);
961 }
962
Chris Wilsonea5b2132010-08-04 13:50:23 +0100963 intel_encoder = &intel_lvds->base;
Chris Wilson4ef69c72010-09-09 15:14:28 +0100964 encoder = &intel_encoder->base;
Chris Wilsonea5b2132010-08-04 13:50:23 +0100965 connector = &intel_connector->base;
Zhenyu Wangbb8a3562010-03-29 16:40:50 +0800966 drm_connector_init(dev, &intel_connector->base, &intel_lvds_connector_funcs,
Jesse Barnes79e53942008-11-07 14:24:08 -0800967 DRM_MODE_CONNECTOR_LVDS);
968
Chris Wilson4ef69c72010-09-09 15:14:28 +0100969 drm_encoder_init(dev, &intel_encoder->base, &intel_lvds_enc_funcs,
Jesse Barnes79e53942008-11-07 14:24:08 -0800970 DRM_MODE_ENCODER_LVDS);
971
Daniel Vetterc22834e2012-06-30 15:31:28 +0200972 intel_encoder->enable = intel_enable_lvds;
973 intel_encoder->disable = intel_disable_lvds;
Daniel Vetterb1dc3322012-07-02 21:09:00 +0200974 intel_encoder->get_hw_state = intel_lvds_get_hw_state;
975 intel_connector->get_hw_state = intel_connector_get_hw_state;
Daniel Vetterc22834e2012-06-30 15:31:28 +0200976
Chris Wilsondf0e9242010-09-09 16:20:55 +0100977 intel_connector_attach_encoder(intel_connector, intel_encoder);
Eric Anholt21d40d32010-03-25 11:11:14 -0700978 intel_encoder->type = INTEL_OUTPUT_LVDS;
Jesse Barnes79e53942008-11-07 14:24:08 -0800979
Daniel Vetter66a92782012-07-12 20:08:18 +0200980 intel_encoder->cloneable = false;
Jesse Barnes27f82272011-09-02 12:54:37 -0700981 if (HAS_PCH_SPLIT(dev))
982 intel_encoder->crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
Daniel Vetter0b9f43a2012-06-05 10:07:11 +0200983 else if (IS_GEN4(dev))
984 intel_encoder->crtc_mask = (1 << 0) | (1 << 1);
Jesse Barnes27f82272011-09-02 12:54:37 -0700985 else
986 intel_encoder->crtc_mask = (1 << 1);
987
Jesse Barnes79e53942008-11-07 14:24:08 -0800988 drm_encoder_helper_add(encoder, &intel_lvds_helper_funcs);
989 drm_connector_helper_add(connector, &intel_lvds_connector_helper_funcs);
990 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
991 connector->interlace_allowed = false;
992 connector->doublescan_allowed = false;
993
Zhao Yakui3fbe18d2009-06-22 15:31:25 +0800994 /* create the scaling mode property */
995 drm_mode_create_scaling_mode_property(dev);
996 /*
997 * the initial panel fitting mode will be FULL_SCREEN.
998 */
Jesse Barnes79e53942008-11-07 14:24:08 -0800999
Zhenyu Wangbb8a3562010-03-29 16:40:50 +08001000 drm_connector_attach_property(&intel_connector->base,
Zhao Yakui3fbe18d2009-06-22 15:31:25 +08001001 dev->mode_config.scaling_mode_property,
Jesse Barnesdd1ea372010-06-24 11:05:10 -07001002 DRM_MODE_SCALE_ASPECT);
Chris Wilsonea5b2132010-08-04 13:50:23 +01001003 intel_lvds->fitting_mode = DRM_MODE_SCALE_ASPECT;
Jesse Barnes79e53942008-11-07 14:24:08 -08001004 /*
1005 * LVDS discovery:
1006 * 1) check for EDID on DDC
1007 * 2) check for VBT data
1008 * 3) check to see if LVDS is already on
1009 * if none of the above, no panel
1010 * 4) make sure lid is open
1011 * if closed, act like it's not there for now
1012 */
1013
Jesse Barnes79e53942008-11-07 14:24:08 -08001014 /*
1015 * Attempt to get the fixed panel mode from DDC. Assume that the
1016 * preferred mode is the right one.
1017 */
Chris Wilson219adae2010-09-16 23:05:10 +01001018 intel_lvds->edid = drm_get_edid(connector,
Daniel Kurtz3bd7d902012-03-28 02:36:14 +08001019 intel_gmbus_get_adapter(dev_priv,
1020 pin));
Chris Wilson3f8ff0e2010-11-08 23:20:52 +00001021 if (intel_lvds->edid) {
1022 if (drm_add_edid_modes(connector,
1023 intel_lvds->edid)) {
1024 drm_mode_connector_update_edid_property(connector,
1025 intel_lvds->edid);
1026 } else {
1027 kfree(intel_lvds->edid);
1028 intel_lvds->edid = NULL;
1029 }
1030 }
Chris Wilson219adae2010-09-16 23:05:10 +01001031 if (!intel_lvds->edid) {
Chris Wilson788319d2010-09-12 17:34:41 +01001032 /* Didn't get an EDID, so
1033 * Set wide sync ranges so we get all modes
1034 * handed to valid_mode for checking
1035 */
1036 connector->display_info.min_vfreq = 0;
1037 connector->display_info.max_vfreq = 200;
1038 connector->display_info.min_hfreq = 0;
1039 connector->display_info.max_hfreq = 200;
1040 }
Jesse Barnes79e53942008-11-07 14:24:08 -08001041
1042 list_for_each_entry(scan, &connector->probed_modes, head) {
Jesse Barnes79e53942008-11-07 14:24:08 -08001043 if (scan->type & DRM_MODE_TYPE_PREFERRED) {
Chris Wilson788319d2010-09-12 17:34:41 +01001044 intel_lvds->fixed_mode =
Jesse Barnes79e53942008-11-07 14:24:08 -08001045 drm_mode_duplicate(dev, scan);
Chris Wilson788319d2010-09-12 17:34:41 +01001046 intel_find_lvds_downclock(dev,
1047 intel_lvds->fixed_mode,
1048 connector);
Paul Collins565dcd42009-02-04 23:05:41 +13001049 goto out;
Jesse Barnes79e53942008-11-07 14:24:08 -08001050 }
Jesse Barnes79e53942008-11-07 14:24:08 -08001051 }
1052
1053 /* Failed to get EDID, what about VBT? */
Ma Ling88631702009-05-13 11:19:55 +08001054 if (dev_priv->lfp_lvds_vbt_mode) {
Chris Wilson788319d2010-09-12 17:34:41 +01001055 intel_lvds->fixed_mode =
Ma Ling88631702009-05-13 11:19:55 +08001056 drm_mode_duplicate(dev, dev_priv->lfp_lvds_vbt_mode);
Chris Wilson788319d2010-09-12 17:34:41 +01001057 if (intel_lvds->fixed_mode) {
1058 intel_lvds->fixed_mode->type |=
Jesse Barnese285f3c2009-01-14 10:53:36 -08001059 DRM_MODE_TYPE_PREFERRED;
Jesse Barnese285f3c2009-01-14 10:53:36 -08001060 goto out;
1061 }
Jesse Barnes79e53942008-11-07 14:24:08 -08001062 }
1063
1064 /*
1065 * If we didn't get EDID, try checking if the panel is already turned
1066 * on. If so, assume that whatever is currently programmed is the
1067 * correct mode.
1068 */
Zhenyu Wang541998a2009-06-05 15:38:44 +08001069
Adam Jacksonf2b115e2009-12-03 17:14:42 -05001070 /* Ironlake: FIXME if still fail, not try pipe mode now */
Eric Anholtc619eed2010-01-28 16:45:52 -08001071 if (HAS_PCH_SPLIT(dev))
Zhenyu Wang541998a2009-06-05 15:38:44 +08001072 goto failed;
1073
Jesse Barnes79e53942008-11-07 14:24:08 -08001074 lvds = I915_READ(LVDS);
1075 pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0;
Chris Wilsonf875c152010-09-09 15:44:14 +01001076 crtc = intel_get_crtc_for_pipe(dev, pipe);
Jesse Barnes79e53942008-11-07 14:24:08 -08001077
1078 if (crtc && (lvds & LVDS_PORT_EN)) {
Chris Wilson788319d2010-09-12 17:34:41 +01001079 intel_lvds->fixed_mode = intel_crtc_mode_get(dev, crtc);
1080 if (intel_lvds->fixed_mode) {
1081 intel_lvds->fixed_mode->type |=
Jesse Barnes79e53942008-11-07 14:24:08 -08001082 DRM_MODE_TYPE_PREFERRED;
Paul Collins565dcd42009-02-04 23:05:41 +13001083 goto out;
Jesse Barnes79e53942008-11-07 14:24:08 -08001084 }
1085 }
1086
1087 /* If we still don't have a mode after all that, give up. */
Chris Wilson788319d2010-09-12 17:34:41 +01001088 if (!intel_lvds->fixed_mode)
Jesse Barnes79e53942008-11-07 14:24:08 -08001089 goto failed;
1090
Jesse Barnes79e53942008-11-07 14:24:08 -08001091out:
Daniel Vetter24ded202012-06-05 12:14:54 +02001092 /*
1093 * Unlock registers and just
1094 * leave them unlocked
1095 */
Eric Anholtc619eed2010-01-28 16:45:52 -08001096 if (HAS_PCH_SPLIT(dev)) {
Keith Packarded10fca2011-08-06 10:33:12 -07001097 I915_WRITE(PCH_PP_CONTROL,
1098 I915_READ(PCH_PP_CONTROL) | PANEL_UNLOCK_REGS);
1099 } else {
Keith Packarded10fca2011-08-06 10:33:12 -07001100 I915_WRITE(PP_CONTROL,
1101 I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS);
Zhenyu Wang541998a2009-06-05 15:38:44 +08001102 }
Jesse Barnesc1c7af62009-09-10 15:28:03 -07001103 dev_priv->lid_notifier.notifier_call = intel_lid_notify;
1104 if (acpi_lid_notifier_register(&dev_priv->lid_notifier)) {
Zhao Yakui28c97732009-10-09 11:39:41 +08001105 DRM_DEBUG_KMS("lid notifier registration failed\n");
Jesse Barnesc1c7af62009-09-10 15:28:03 -07001106 dev_priv->lid_notifier.notifier_call = NULL;
1107 }
Zhao Yakuia2565372009-12-11 09:26:11 +08001108 /* keep the LVDS connector */
1109 dev_priv->int_lvds_connector = connector;
Jesse Barnes79e53942008-11-07 14:24:08 -08001110 drm_sysfs_connector_add(connector);
Matthew Garrettaaa6fd22011-08-12 12:11:33 +02001111
1112 intel_panel_setup_backlight(dev);
1113
Chris Wilsonc5d1b512010-11-29 18:00:23 +00001114 return true;
Jesse Barnes79e53942008-11-07 14:24:08 -08001115
1116failed:
Zhao Yakui8a4c47f2009-07-20 13:48:04 +08001117 DRM_DEBUG_KMS("No LVDS modes found, disabling.\n");
Jesse Barnes79e53942008-11-07 14:24:08 -08001118 drm_connector_cleanup(connector);
Shaohua Li1991bdf2009-11-17 17:19:23 +08001119 drm_encoder_cleanup(encoder);
Chris Wilsonea5b2132010-08-04 13:50:23 +01001120 kfree(intel_lvds);
Zhenyu Wangbb8a3562010-03-29 16:40:50 +08001121 kfree(intel_connector);
Chris Wilsonc5d1b512010-11-29 18:00:23 +00001122 return false;
Jesse Barnes79e53942008-11-07 14:24:08 -08001123}