blob: 4d3d736a4f56a9c65b315162dac4dc1b2b372c28 [file] [log] [blame]
Jesse Barnes79e53942008-11-07 14:24:08 -08001/*
2 * Copyright © 2006-2007 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Eric Anholt <eric@anholt.net>
25 */
26
Duncan Laurie8ca40132011-10-25 15:42:21 -070027#include <linux/dmi.h>
Jesse Barnes79e53942008-11-07 14:24:08 -080028#include <linux/i2c.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090029#include <linux/slab.h>
Jesse Barnes79e53942008-11-07 14:24:08 -080030#include "drmP.h"
31#include "drm.h"
32#include "drm_crtc.h"
33#include "drm_crtc_helper.h"
David Müllerf5afcd32011-01-06 12:29:32 +000034#include "drm_edid.h"
Jesse Barnes79e53942008-11-07 14:24:08 -080035#include "intel_drv.h"
36#include "i915_drm.h"
37#include "i915_drv.h"
38
Keith Packarde7dbb2f2010-11-16 16:03:53 +080039/* Here's the desired hotplug mode */
40#define ADPA_HOTPLUG_BITS (ADPA_CRT_HOTPLUG_PERIOD_128 | \
41 ADPA_CRT_HOTPLUG_WARMUP_10MS | \
42 ADPA_CRT_HOTPLUG_SAMPLE_4S | \
43 ADPA_CRT_HOTPLUG_VOLTAGE_50 | \
44 ADPA_CRT_HOTPLUG_VOLREF_325MV | \
45 ADPA_CRT_HOTPLUG_ENABLE)
46
Chris Wilsonc9a1c4c2010-11-16 10:58:37 +000047struct intel_crt {
48 struct intel_encoder base;
Keith Packarde7dbb2f2010-11-16 16:03:53 +080049 bool force_hotplug_required;
Chris Wilsonc9a1c4c2010-11-16 10:58:37 +000050};
51
52static struct intel_crt *intel_attached_crt(struct drm_connector *connector)
53{
54 return container_of(intel_attached_encoder(connector),
55 struct intel_crt, base);
56}
57
Jesse Barnes79e53942008-11-07 14:24:08 -080058static void intel_crt_dpms(struct drm_encoder *encoder, int mode)
59{
60 struct drm_device *dev = encoder->dev;
61 struct drm_i915_private *dev_priv = dev->dev_private;
Zhenyu Wang2c072452009-06-05 15:38:42 +080062 u32 temp, reg;
Jesse Barnes79e53942008-11-07 14:24:08 -080063
Eric Anholtbad720f2009-10-22 16:11:14 -070064 if (HAS_PCH_SPLIT(dev))
Zhenyu Wang2c072452009-06-05 15:38:42 +080065 reg = PCH_ADPA;
66 else
67 reg = ADPA;
68
69 temp = I915_READ(reg);
Jesse Barnes79e53942008-11-07 14:24:08 -080070 temp &= ~(ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);
ling.ma@intel.comfebc7692009-06-25 11:55:57 +080071 temp &= ~ADPA_DAC_ENABLE;
Jesse Barnes79e53942008-11-07 14:24:08 -080072
Akshay Joshi0206e352011-08-16 15:34:10 -040073 switch (mode) {
Jesse Barnes79e53942008-11-07 14:24:08 -080074 case DRM_MODE_DPMS_ON:
75 temp |= ADPA_DAC_ENABLE;
76 break;
77 case DRM_MODE_DPMS_STANDBY:
78 temp |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE;
79 break;
80 case DRM_MODE_DPMS_SUSPEND:
81 temp |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE;
82 break;
83 case DRM_MODE_DPMS_OFF:
84 temp |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE;
85 break;
86 }
87
Zhenyu Wang2c072452009-06-05 15:38:42 +080088 I915_WRITE(reg, temp);
Jesse Barnes79e53942008-11-07 14:24:08 -080089}
90
91static int intel_crt_mode_valid(struct drm_connector *connector,
92 struct drm_display_mode *mode)
93{
Zhao Yakui6bcdcd92009-03-03 18:06:42 +080094 struct drm_device *dev = connector->dev;
95
96 int max_clock = 0;
Jesse Barnes79e53942008-11-07 14:24:08 -080097 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
98 return MODE_NO_DBLESCAN;
99
Zhao Yakui6bcdcd92009-03-03 18:06:42 +0800100 if (mode->clock < 25000)
101 return MODE_CLOCK_LOW;
102
Chris Wilsona6c45cf2010-09-17 00:32:17 +0100103 if (IS_GEN2(dev))
Zhao Yakui6bcdcd92009-03-03 18:06:42 +0800104 max_clock = 350000;
105 else
106 max_clock = 400000;
107 if (mode->clock > max_clock)
108 return MODE_CLOCK_HIGH;
Jesse Barnes79e53942008-11-07 14:24:08 -0800109
110 return MODE_OK;
111}
112
113static bool intel_crt_mode_fixup(struct drm_encoder *encoder,
114 struct drm_display_mode *mode,
115 struct drm_display_mode *adjusted_mode)
116{
117 return true;
118}
119
120static void intel_crt_mode_set(struct drm_encoder *encoder,
121 struct drm_display_mode *mode,
122 struct drm_display_mode *adjusted_mode)
123{
124
125 struct drm_device *dev = encoder->dev;
126 struct drm_crtc *crtc = encoder->crtc;
127 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
128 struct drm_i915_private *dev_priv = dev->dev_private;
129 int dpll_md_reg;
130 u32 adpa, dpll_md;
Zhenyu Wang2c072452009-06-05 15:38:42 +0800131 u32 adpa_reg;
Jesse Barnes79e53942008-11-07 14:24:08 -0800132
Jesse Barnes9db4a9c2011-02-07 12:26:52 -0800133 dpll_md_reg = DPLL_MD(intel_crtc->pipe);
Jesse Barnes79e53942008-11-07 14:24:08 -0800134
Eric Anholtbad720f2009-10-22 16:11:14 -0700135 if (HAS_PCH_SPLIT(dev))
Zhenyu Wang2c072452009-06-05 15:38:42 +0800136 adpa_reg = PCH_ADPA;
137 else
138 adpa_reg = ADPA;
139
Jesse Barnes79e53942008-11-07 14:24:08 -0800140 /*
141 * Disable separate mode multiplier used when cloning SDVO to CRT
142 * XXX this needs to be adjusted when we really are cloning
143 */
Chris Wilsona6c45cf2010-09-17 00:32:17 +0100144 if (INTEL_INFO(dev)->gen >= 4 && !HAS_PCH_SPLIT(dev)) {
Jesse Barnes79e53942008-11-07 14:24:08 -0800145 dpll_md = I915_READ(dpll_md_reg);
146 I915_WRITE(dpll_md_reg,
147 dpll_md & ~DPLL_MD_UDI_MULTIPLIER_MASK);
148 }
149
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800150 adpa = ADPA_HOTPLUG_BITS;
Jesse Barnes79e53942008-11-07 14:24:08 -0800151 if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
152 adpa |= ADPA_HSYNC_ACTIVE_HIGH;
153 if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
154 adpa |= ADPA_VSYNC_ACTIVE_HIGH;
155
Jesse Barnes75770562011-10-12 09:01:58 -0700156 /* For CPT allow 3 pipe config, for others just use A or B */
157 if (HAS_PCH_CPT(dev))
158 adpa |= PORT_TRANS_SEL_CPT(intel_crtc->pipe);
159 else if (intel_crtc->pipe == 0)
160 adpa |= ADPA_PIPE_A_SELECT;
161 else
162 adpa |= ADPA_PIPE_B_SELECT;
Jesse Barnes79e53942008-11-07 14:24:08 -0800163
Jesse Barnes9db4a9c2011-02-07 12:26:52 -0800164 if (!HAS_PCH_SPLIT(dev))
165 I915_WRITE(BCLRPAT(intel_crtc->pipe), 0);
166
Zhenyu Wang2c072452009-06-05 15:38:42 +0800167 I915_WRITE(adpa_reg, adpa);
168}
169
Adam Jacksonf2b115e2009-12-03 17:14:42 -0500170static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector)
Zhenyu Wang2c072452009-06-05 15:38:42 +0800171{
172 struct drm_device *dev = connector->dev;
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800173 struct intel_crt *crt = intel_attached_crt(connector);
Zhenyu Wang2c072452009-06-05 15:38:42 +0800174 struct drm_i915_private *dev_priv = dev->dev_private;
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800175 u32 adpa;
Zhenyu Wang2c072452009-06-05 15:38:42 +0800176 bool ret;
177
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800178 /* The first time through, trigger an explicit detection cycle */
179 if (crt->force_hotplug_required) {
180 bool turn_off_dac = HAS_PCH_SPLIT(dev);
181 u32 save_adpa;
Zhenyu Wang67941da2009-07-24 01:00:33 +0800182
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800183 crt->force_hotplug_required = 0;
Dave Airlied5dd96c2010-08-04 15:52:19 +1000184
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800185 save_adpa = adpa = I915_READ(PCH_ADPA);
186 DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa);
Dave Airlied5dd96c2010-08-04 15:52:19 +1000187
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800188 adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER;
189 if (turn_off_dac)
190 adpa &= ~ADPA_DAC_ENABLE;
Zhenyu Wang2c072452009-06-05 15:38:42 +0800191
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800192 I915_WRITE(PCH_ADPA, adpa);
Zhenyu Wang2c072452009-06-05 15:38:42 +0800193
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800194 if (wait_for((I915_READ(PCH_ADPA) & ADPA_CRT_HOTPLUG_FORCE_TRIGGER) == 0,
195 1000))
196 DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
Zhenyu Wang2c072452009-06-05 15:38:42 +0800197
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800198 if (turn_off_dac) {
199 I915_WRITE(PCH_ADPA, save_adpa);
200 POSTING_READ(PCH_ADPA);
201 }
Zhenyu Wanga4a6b902010-04-07 16:15:55 +0800202 }
203
Zhenyu Wang2c072452009-06-05 15:38:42 +0800204 /* Check the status to see if both blue and green are on now */
205 adpa = I915_READ(PCH_ADPA);
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800206 if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0)
Zhenyu Wang2c072452009-06-05 15:38:42 +0800207 ret = true;
208 else
209 ret = false;
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800210 DRM_DEBUG_KMS("ironlake hotplug adpa=0x%x, result %d\n", adpa, ret);
Zhenyu Wang2c072452009-06-05 15:38:42 +0800211
Zhenyu Wang2c072452009-06-05 15:38:42 +0800212 return ret;
Jesse Barnes79e53942008-11-07 14:24:08 -0800213}
214
215/**
216 * Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence.
217 *
218 * Not for i915G/i915GM
219 *
220 * \return true if CRT is connected.
221 * \return false if CRT is disconnected.
222 */
223static bool intel_crt_detect_hotplug(struct drm_connector *connector)
224{
225 struct drm_device *dev = connector->dev;
226 struct drm_i915_private *dev_priv = dev->dev_private;
Adam Jackson7a772c42010-05-24 16:46:29 -0400227 u32 hotplug_en, orig, stat;
228 bool ret = false;
Zhao Yakui771cb082009-03-03 18:07:52 +0800229 int i, tries = 0;
Zhenyu Wang2c072452009-06-05 15:38:42 +0800230
Eric Anholtbad720f2009-10-22 16:11:14 -0700231 if (HAS_PCH_SPLIT(dev))
Adam Jacksonf2b115e2009-12-03 17:14:42 -0500232 return intel_ironlake_crt_detect_hotplug(connector);
Zhenyu Wang2c072452009-06-05 15:38:42 +0800233
Zhao Yakui771cb082009-03-03 18:07:52 +0800234 /*
235 * On 4 series desktop, CRT detect sequence need to be done twice
236 * to get a reliable result.
237 */
Jesse Barnes79e53942008-11-07 14:24:08 -0800238
Zhao Yakui771cb082009-03-03 18:07:52 +0800239 if (IS_G4X(dev) && !IS_GM45(dev))
240 tries = 2;
241 else
242 tries = 1;
Adam Jackson7a772c42010-05-24 16:46:29 -0400243 hotplug_en = orig = I915_READ(PORT_HOTPLUG_EN);
Zhao Yakui771cb082009-03-03 18:07:52 +0800244 hotplug_en |= CRT_HOTPLUG_FORCE_DETECT;
Jesse Barnes79e53942008-11-07 14:24:08 -0800245
Zhao Yakui771cb082009-03-03 18:07:52 +0800246 for (i = 0; i < tries ; i++) {
Zhao Yakui771cb082009-03-03 18:07:52 +0800247 /* turn on the FORCE_DETECT */
248 I915_WRITE(PORT_HOTPLUG_EN, hotplug_en);
Zhao Yakui771cb082009-03-03 18:07:52 +0800249 /* wait for FORCE_DETECT to go off */
Chris Wilson913d8d12010-08-07 11:01:35 +0100250 if (wait_for((I915_READ(PORT_HOTPLUG_EN) &
251 CRT_HOTPLUG_FORCE_DETECT) == 0,
Chris Wilson481b6af2010-08-23 17:43:35 +0100252 1000))
Chris Wilson79077312010-09-12 19:58:04 +0100253 DRM_DEBUG_KMS("timed out waiting for FORCE_DETECT to go off");
Zhao Yakui771cb082009-03-03 18:07:52 +0800254 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800255
Adam Jackson7a772c42010-05-24 16:46:29 -0400256 stat = I915_READ(PORT_HOTPLUG_STAT);
257 if ((stat & CRT_HOTPLUG_MONITOR_MASK) != CRT_HOTPLUG_MONITOR_NONE)
258 ret = true;
Jesse Barnes79e53942008-11-07 14:24:08 -0800259
Adam Jackson7a772c42010-05-24 16:46:29 -0400260 /* clear the interrupt we just generated, if any */
261 I915_WRITE(PORT_HOTPLUG_STAT, CRT_HOTPLUG_INT_STATUS);
262
263 /* and put the bits back */
264 I915_WRITE(PORT_HOTPLUG_EN, orig);
265
266 return ret;
Jesse Barnes79e53942008-11-07 14:24:08 -0800267}
268
David Müllerf5afcd32011-01-06 12:29:32 +0000269static bool intel_crt_detect_ddc(struct drm_connector *connector)
Jesse Barnes79e53942008-11-07 14:24:08 -0800270{
David Müllerf5afcd32011-01-06 12:29:32 +0000271 struct intel_crt *crt = intel_attached_crt(connector);
Chris Wilsonc9a1c4c2010-11-16 10:58:37 +0000272 struct drm_i915_private *dev_priv = crt->base.base.dev->dev_private;
Jesse Barnes79e53942008-11-07 14:24:08 -0800273
274 /* CRT should always be at 0, but check anyway */
Chris Wilsonc9a1c4c2010-11-16 10:58:37 +0000275 if (crt->base.type != INTEL_OUTPUT_ANALOG)
Jesse Barnes79e53942008-11-07 14:24:08 -0800276 return false;
277
Chris Wilsonc9a1c4c2010-11-16 10:58:37 +0000278 if (intel_ddc_probe(&crt->base, dev_priv->crt_ddc_pin)) {
David Müllerf5afcd32011-01-06 12:29:32 +0000279 struct edid *edid;
280 bool is_digital = false;
281
282 edid = drm_get_edid(connector,
283 &dev_priv->gmbus[dev_priv->crt_ddc_pin].adapter);
284 /*
285 * This may be a DVI-I connector with a shared DDC
286 * link between analog and digital outputs, so we
287 * have to check the EDID input spec of the attached device.
Chris Wilsond3bcb752011-05-12 22:17:15 +0100288 *
289 * On the other hand, what should we do if it is a broken EDID?
David Müllerf5afcd32011-01-06 12:29:32 +0000290 */
291 if (edid != NULL) {
292 is_digital = edid->input & DRM_EDID_INPUT_DIGITAL;
293 connector->display_info.raw_edid = NULL;
294 kfree(edid);
295 }
296
297 if (!is_digital) {
298 DRM_DEBUG_KMS("CRT detected via DDC:0x50 [EDID]\n");
299 return true;
Chris Wilsond3bcb752011-05-12 22:17:15 +0100300 } else {
301 DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [EDID reports a digital panel]\n");
David Müllerf5afcd32011-01-06 12:29:32 +0000302 }
Chris Wilson6ec3d0c2010-09-22 18:17:01 +0100303 }
304
305 return false;
Jesse Barnes79e53942008-11-07 14:24:08 -0800306}
307
Ma Linge4a5d542009-05-26 11:31:00 +0800308static enum drm_connector_status
Chris Wilson71731882011-04-19 23:10:58 +0100309intel_crt_load_detect(struct intel_crt *crt)
Ma Linge4a5d542009-05-26 11:31:00 +0800310{
Chris Wilson71731882011-04-19 23:10:58 +0100311 struct drm_device *dev = crt->base.base.dev;
Ma Linge4a5d542009-05-26 11:31:00 +0800312 struct drm_i915_private *dev_priv = dev->dev_private;
Chris Wilson71731882011-04-19 23:10:58 +0100313 uint32_t pipe = to_intel_crtc(crt->base.base.crtc)->pipe;
Ma Linge4a5d542009-05-26 11:31:00 +0800314 uint32_t save_bclrpat;
315 uint32_t save_vtotal;
316 uint32_t vtotal, vactive;
317 uint32_t vsample;
318 uint32_t vblank, vblank_start, vblank_end;
319 uint32_t dsl;
320 uint32_t bclrpat_reg;
321 uint32_t vtotal_reg;
322 uint32_t vblank_reg;
323 uint32_t vsync_reg;
324 uint32_t pipeconf_reg;
325 uint32_t pipe_dsl_reg;
326 uint8_t st00;
327 enum drm_connector_status status;
328
Chris Wilson6ec3d0c2010-09-22 18:17:01 +0100329 DRM_DEBUG_KMS("starting load-detect on CRT\n");
330
Jesse Barnes9db4a9c2011-02-07 12:26:52 -0800331 bclrpat_reg = BCLRPAT(pipe);
332 vtotal_reg = VTOTAL(pipe);
333 vblank_reg = VBLANK(pipe);
334 vsync_reg = VSYNC(pipe);
335 pipeconf_reg = PIPECONF(pipe);
336 pipe_dsl_reg = PIPEDSL(pipe);
Ma Linge4a5d542009-05-26 11:31:00 +0800337
338 save_bclrpat = I915_READ(bclrpat_reg);
339 save_vtotal = I915_READ(vtotal_reg);
340 vblank = I915_READ(vblank_reg);
341
342 vtotal = ((save_vtotal >> 16) & 0xfff) + 1;
343 vactive = (save_vtotal & 0x7ff) + 1;
344
345 vblank_start = (vblank & 0xfff) + 1;
346 vblank_end = ((vblank >> 16) & 0xfff) + 1;
347
348 /* Set the border color to purple. */
349 I915_WRITE(bclrpat_reg, 0x500050);
350
Chris Wilsona6c45cf2010-09-17 00:32:17 +0100351 if (!IS_GEN2(dev)) {
Ma Linge4a5d542009-05-26 11:31:00 +0800352 uint32_t pipeconf = I915_READ(pipeconf_reg);
353 I915_WRITE(pipeconf_reg, pipeconf | PIPECONF_FORCE_BORDER);
Chris Wilson19c55da2010-08-09 14:50:53 +0100354 POSTING_READ(pipeconf_reg);
Ma Linge4a5d542009-05-26 11:31:00 +0800355 /* Wait for next Vblank to substitue
356 * border color for Color info */
Jesse Barnes9d0498a2010-08-18 13:20:54 -0700357 intel_wait_for_vblank(dev, pipe);
Ma Linge4a5d542009-05-26 11:31:00 +0800358 st00 = I915_READ8(VGA_MSR_WRITE);
359 status = ((st00 & (1 << 4)) != 0) ?
360 connector_status_connected :
361 connector_status_disconnected;
362
363 I915_WRITE(pipeconf_reg, pipeconf);
364 } else {
365 bool restore_vblank = false;
366 int count, detect;
367
368 /*
369 * If there isn't any border, add some.
370 * Yes, this will flicker
371 */
372 if (vblank_start <= vactive && vblank_end >= vtotal) {
373 uint32_t vsync = I915_READ(vsync_reg);
374 uint32_t vsync_start = (vsync & 0xffff) + 1;
375
376 vblank_start = vsync_start;
377 I915_WRITE(vblank_reg,
378 (vblank_start - 1) |
379 ((vblank_end - 1) << 16));
380 restore_vblank = true;
381 }
382 /* sample in the vertical border, selecting the larger one */
383 if (vblank_start - vactive >= vtotal - vblank_end)
384 vsample = (vblank_start + vactive) >> 1;
385 else
386 vsample = (vtotal + vblank_end) >> 1;
387
388 /*
389 * Wait for the border to be displayed
390 */
391 while (I915_READ(pipe_dsl_reg) >= vactive)
392 ;
393 while ((dsl = I915_READ(pipe_dsl_reg)) <= vsample)
394 ;
395 /*
396 * Watch ST00 for an entire scanline
397 */
398 detect = 0;
399 count = 0;
400 do {
401 count++;
402 /* Read the ST00 VGA status register */
403 st00 = I915_READ8(VGA_MSR_WRITE);
404 if (st00 & (1 << 4))
405 detect++;
406 } while ((I915_READ(pipe_dsl_reg) == dsl));
407
408 /* restore vblank if necessary */
409 if (restore_vblank)
410 I915_WRITE(vblank_reg, vblank);
411 /*
412 * If more than 3/4 of the scanline detected a monitor,
413 * then it is assumed to be present. This works even on i830,
414 * where there isn't any way to force the border color across
415 * the screen
416 */
417 status = detect * 4 > count * 3 ?
418 connector_status_connected :
419 connector_status_disconnected;
420 }
421
422 /* Restore previous settings */
423 I915_WRITE(bclrpat_reg, save_bclrpat);
424
425 return status;
426}
427
Chris Wilson7b334fc2010-09-09 23:51:02 +0100428static enum drm_connector_status
Chris Wilson930a9e22010-09-14 11:07:23 +0100429intel_crt_detect(struct drm_connector *connector, bool force)
Jesse Barnes79e53942008-11-07 14:24:08 -0800430{
431 struct drm_device *dev = connector->dev;
Chris Wilsonc9a1c4c2010-11-16 10:58:37 +0000432 struct intel_crt *crt = intel_attached_crt(connector);
Ma Linge4a5d542009-05-26 11:31:00 +0800433 struct drm_crtc *crtc;
Ma Linge4a5d542009-05-26 11:31:00 +0800434 enum drm_connector_status status;
Jesse Barnes79e53942008-11-07 14:24:08 -0800435
Chris Wilsona6c45cf2010-09-17 00:32:17 +0100436 if (I915_HAS_HOTPLUG(dev)) {
Chris Wilson6ec3d0c2010-09-22 18:17:01 +0100437 if (intel_crt_detect_hotplug(connector)) {
438 DRM_DEBUG_KMS("CRT detected via hotplug\n");
Jesse Barnes79e53942008-11-07 14:24:08 -0800439 return connector_status_connected;
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800440 } else {
441 DRM_DEBUG_KMS("CRT not detected via hotplug\n");
Jesse Barnes79e53942008-11-07 14:24:08 -0800442 return connector_status_disconnected;
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800443 }
Jesse Barnes79e53942008-11-07 14:24:08 -0800444 }
445
David Müllerf5afcd32011-01-06 12:29:32 +0000446 if (intel_crt_detect_ddc(connector))
Jesse Barnes79e53942008-11-07 14:24:08 -0800447 return connector_status_connected;
448
Chris Wilson930a9e22010-09-14 11:07:23 +0100449 if (!force)
Chris Wilson7b334fc2010-09-09 23:51:02 +0100450 return connector->status;
451
Ma Linge4a5d542009-05-26 11:31:00 +0800452 /* for pre-945g platforms use load detect */
Chris Wilsonc9a1c4c2010-11-16 10:58:37 +0000453 crtc = crt->base.base.crtc;
454 if (crtc && crtc->enabled) {
Chris Wilson71731882011-04-19 23:10:58 +0100455 status = intel_crt_load_detect(crt);
Ma Linge4a5d542009-05-26 11:31:00 +0800456 } else {
Chris Wilson8261b192011-04-19 23:18:09 +0100457 struct intel_load_detect_pipe tmp;
458
459 if (intel_get_load_detect_pipe(&crt->base, connector, NULL,
460 &tmp)) {
David Müllerf5afcd32011-01-06 12:29:32 +0000461 if (intel_crt_detect_ddc(connector))
Chris Wilson6ec3d0c2010-09-22 18:17:01 +0100462 status = connector_status_connected;
463 else
Chris Wilson71731882011-04-19 23:10:58 +0100464 status = intel_crt_load_detect(crt);
Chris Wilson8261b192011-04-19 23:18:09 +0100465 intel_release_load_detect_pipe(&crt->base, connector,
466 &tmp);
Ma Linge4a5d542009-05-26 11:31:00 +0800467 } else
468 status = connector_status_unknown;
469 }
470
471 return status;
Jesse Barnes79e53942008-11-07 14:24:08 -0800472}
473
474static void intel_crt_destroy(struct drm_connector *connector)
475{
Jesse Barnes79e53942008-11-07 14:24:08 -0800476 drm_sysfs_connector_remove(connector);
477 drm_connector_cleanup(connector);
478 kfree(connector);
479}
480
481static int intel_crt_get_modes(struct drm_connector *connector)
482{
ling.ma@intel.com8e4d36b2009-06-30 11:35:34 +0800483 struct drm_device *dev = connector->dev;
Chris Wilsonf899fc62010-07-20 15:44:45 -0700484 struct drm_i915_private *dev_priv = dev->dev_private;
Chris Wilson890f3352010-09-14 16:46:59 +0100485 int ret;
ling.ma@intel.com8e4d36b2009-06-30 11:35:34 +0800486
Chris Wilsonf899fc62010-07-20 15:44:45 -0700487 ret = intel_ddc_get_modes(connector,
488 &dev_priv->gmbus[dev_priv->crt_ddc_pin].adapter);
ling.ma@intel.com8e4d36b2009-06-30 11:35:34 +0800489 if (ret || !IS_G4X(dev))
Chris Wilsonf899fc62010-07-20 15:44:45 -0700490 return ret;
ling.ma@intel.com8e4d36b2009-06-30 11:35:34 +0800491
ling.ma@intel.com8e4d36b2009-06-30 11:35:34 +0800492 /* Try to probe digital port for output in DVI-I -> VGA mode. */
Chris Wilsonf899fc62010-07-20 15:44:45 -0700493 return intel_ddc_get_modes(connector,
494 &dev_priv->gmbus[GMBUS_PORT_DPB].adapter);
Jesse Barnes79e53942008-11-07 14:24:08 -0800495}
496
497static int intel_crt_set_property(struct drm_connector *connector,
498 struct drm_property *property,
499 uint64_t value)
500{
Jesse Barnes79e53942008-11-07 14:24:08 -0800501 return 0;
502}
503
Chris Wilsonf3269052011-01-24 15:17:08 +0000504static void intel_crt_reset(struct drm_connector *connector)
505{
506 struct drm_device *dev = connector->dev;
507 struct intel_crt *crt = intel_attached_crt(connector);
508
509 if (HAS_PCH_SPLIT(dev))
510 crt->force_hotplug_required = 1;
511}
512
Jesse Barnes79e53942008-11-07 14:24:08 -0800513/*
514 * Routines for controlling stuff on the analog port
515 */
516
517static const struct drm_encoder_helper_funcs intel_crt_helper_funcs = {
518 .dpms = intel_crt_dpms,
519 .mode_fixup = intel_crt_mode_fixup,
520 .prepare = intel_encoder_prepare,
521 .commit = intel_encoder_commit,
522 .mode_set = intel_crt_mode_set,
523};
524
525static const struct drm_connector_funcs intel_crt_connector_funcs = {
Chris Wilsonf3269052011-01-24 15:17:08 +0000526 .reset = intel_crt_reset,
Keith Packardc9fb15f2009-05-30 20:42:28 -0700527 .dpms = drm_helper_connector_dpms,
Jesse Barnes79e53942008-11-07 14:24:08 -0800528 .detect = intel_crt_detect,
529 .fill_modes = drm_helper_probe_single_connector_modes,
530 .destroy = intel_crt_destroy,
531 .set_property = intel_crt_set_property,
532};
533
534static const struct drm_connector_helper_funcs intel_crt_connector_helper_funcs = {
535 .mode_valid = intel_crt_mode_valid,
536 .get_modes = intel_crt_get_modes,
Chris Wilsondf0e9242010-09-09 16:20:55 +0100537 .best_encoder = intel_best_encoder,
Jesse Barnes79e53942008-11-07 14:24:08 -0800538};
539
Jesse Barnes79e53942008-11-07 14:24:08 -0800540static const struct drm_encoder_funcs intel_crt_enc_funcs = {
Chris Wilsonea5b2132010-08-04 13:50:23 +0100541 .destroy = intel_encoder_destroy,
Jesse Barnes79e53942008-11-07 14:24:08 -0800542};
543
Duncan Laurie8ca40132011-10-25 15:42:21 -0700544static int __init intel_no_crt_dmi_callback(const struct dmi_system_id *id)
545{
546 DRM_DEBUG_KMS("Skipping CRT initialization for %s\n", id->ident);
547 return 1;
548}
549
550static const struct dmi_system_id intel_no_crt[] = {
551 {
552 .callback = intel_no_crt_dmi_callback,
553 .ident = "ACER ZGB",
554 .matches = {
555 DMI_MATCH(DMI_SYS_VENDOR, "ACER"),
556 DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"),
557 },
558 },
559 { }
560};
561
Jesse Barnes79e53942008-11-07 14:24:08 -0800562void intel_crt_init(struct drm_device *dev)
563{
564 struct drm_connector *connector;
Chris Wilsonc9a1c4c2010-11-16 10:58:37 +0000565 struct intel_crt *crt;
Zhenyu Wang454c1ca2010-03-29 15:53:23 +0800566 struct intel_connector *intel_connector;
David Müller (ELSOFT AG)db545012009-08-29 08:54:45 +0200567 struct drm_i915_private *dev_priv = dev->dev_private;
Jesse Barnes79e53942008-11-07 14:24:08 -0800568
Duncan Laurie8ca40132011-10-25 15:42:21 -0700569 /* Skip machines without VGA that falsely report hotplug events */
570 if (dmi_check_system(intel_no_crt))
571 return;
572
Chris Wilsonc9a1c4c2010-11-16 10:58:37 +0000573 crt = kzalloc(sizeof(struct intel_crt), GFP_KERNEL);
574 if (!crt)
Jesse Barnes79e53942008-11-07 14:24:08 -0800575 return;
576
Zhenyu Wang454c1ca2010-03-29 15:53:23 +0800577 intel_connector = kzalloc(sizeof(struct intel_connector), GFP_KERNEL);
578 if (!intel_connector) {
Chris Wilsonc9a1c4c2010-11-16 10:58:37 +0000579 kfree(crt);
Zhenyu Wang454c1ca2010-03-29 15:53:23 +0800580 return;
581 }
582
583 connector = &intel_connector->base;
584 drm_connector_init(dev, &intel_connector->base,
Jesse Barnes79e53942008-11-07 14:24:08 -0800585 &intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA);
586
Chris Wilsonc9a1c4c2010-11-16 10:58:37 +0000587 drm_encoder_init(dev, &crt->base.base, &intel_crt_enc_funcs,
Jesse Barnes79e53942008-11-07 14:24:08 -0800588 DRM_MODE_ENCODER_DAC);
589
Chris Wilsonc9a1c4c2010-11-16 10:58:37 +0000590 intel_connector_attach_encoder(intel_connector, &crt->base);
Jesse Barnes79e53942008-11-07 14:24:08 -0800591
Chris Wilsonc9a1c4c2010-11-16 10:58:37 +0000592 crt->base.type = INTEL_OUTPUT_ANALOG;
593 crt->base.clone_mask = (1 << INTEL_SDVO_NON_TV_CLONE_BIT |
594 1 << INTEL_ANALOG_CLONE_BIT |
595 1 << INTEL_SDVO_LVDS_CLONE_BIT);
596 crt->base.crtc_mask = (1 << 0) | (1 << 1);
Daniel Vetterdbb02572012-01-28 14:49:23 +0100597 if (IS_GEN2(dev))
598 connector->interlace_allowed = 0;
599 else
600 connector->interlace_allowed = 1;
Jesse Barnes79e53942008-11-07 14:24:08 -0800601 connector->doublescan_allowed = 0;
602
Chris Wilsonc9a1c4c2010-11-16 10:58:37 +0000603 drm_encoder_helper_add(&crt->base.base, &intel_crt_helper_funcs);
Jesse Barnes79e53942008-11-07 14:24:08 -0800604 drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs);
605
606 drm_sysfs_connector_add(connector);
Jesse Barnesb01f2c32009-12-11 11:07:17 -0800607
Dave Airlieeb1f8e42010-05-07 06:42:51 +0000608 if (I915_HAS_HOTPLUG(dev))
609 connector->polled = DRM_CONNECTOR_POLL_HPD;
610 else
611 connector->polled = DRM_CONNECTOR_POLL_CONNECT;
612
Keith Packarde7dbb2f2010-11-16 16:03:53 +0800613 /*
614 * Configure the automatic hotplug detection stuff
615 */
616 crt->force_hotplug_required = 0;
617 if (HAS_PCH_SPLIT(dev)) {
618 u32 adpa;
619
620 adpa = I915_READ(PCH_ADPA);
621 adpa &= ~ADPA_CRT_HOTPLUG_MASK;
622 adpa |= ADPA_HOTPLUG_BITS;
623 I915_WRITE(PCH_ADPA, adpa);
624 POSTING_READ(PCH_ADPA);
625
626 DRM_DEBUG_KMS("pch crt adpa set to 0x%x\n", adpa);
627 crt->force_hotplug_required = 1;
628 }
629
Jesse Barnesb01f2c32009-12-11 11:07:17 -0800630 dev_priv->hotplug_supported_mask |= CRT_HOTPLUG_INT_STATUS;
Jesse Barnes79e53942008-11-07 14:24:08 -0800631}