Commit | Line | Data |
---|---|---|
79e53945 JB |
1 | /* |
2 | * Copyright 2006 Dave Airlie <airlied@linux.ie> | |
3 | * Copyright © 2006-2007 Intel Corporation | |
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 | */ | |
27 | #include <linux/i2c.h> | |
28 | #include "drmP.h" | |
29 | #include "drm.h" | |
30 | #include "drm_crtc.h" | |
31 | #include "intel_drv.h" | |
32 | #include "i915_drm.h" | |
33 | #include "i915_drv.h" | |
34 | #include "dvo.h" | |
35 | ||
36 | #define SIL164_ADDR 0x38 | |
37 | #define CH7xxx_ADDR 0x76 | |
38 | #define TFP410_ADDR 0x38 | |
39 | ||
40 | extern struct intel_dvo_dev_ops sil164_ops; | |
41 | extern struct intel_dvo_dev_ops ch7xxx_ops; | |
42 | extern struct intel_dvo_dev_ops ivch_ops; | |
43 | extern struct intel_dvo_dev_ops tfp410_ops; | |
44 | extern struct intel_dvo_dev_ops ch7017_ops; | |
45 | ||
46 | struct intel_dvo_device intel_dvo_devices[] = { | |
47 | { | |
48 | .type = INTEL_DVO_CHIP_TMDS, | |
49 | .name = "sil164", | |
50 | .dvo_reg = DVOC, | |
51 | .slave_addr = SIL164_ADDR, | |
52 | .dev_ops = &sil164_ops, | |
53 | }, | |
54 | { | |
55 | .type = INTEL_DVO_CHIP_TMDS, | |
56 | .name = "ch7xxx", | |
57 | .dvo_reg = DVOC, | |
58 | .slave_addr = CH7xxx_ADDR, | |
59 | .dev_ops = &ch7xxx_ops, | |
60 | }, | |
61 | { | |
62 | .type = INTEL_DVO_CHIP_LVDS, | |
63 | .name = "ivch", | |
64 | .dvo_reg = DVOA, | |
65 | .slave_addr = 0x02, /* Might also be 0x44, 0x84, 0xc4 */ | |
66 | .dev_ops = &ivch_ops, | |
67 | }, | |
68 | { | |
69 | .type = INTEL_DVO_CHIP_TMDS, | |
70 | .name = "tfp410", | |
71 | .dvo_reg = DVOC, | |
72 | .slave_addr = TFP410_ADDR, | |
73 | .dev_ops = &tfp410_ops, | |
74 | }, | |
75 | { | |
76 | .type = INTEL_DVO_CHIP_LVDS, | |
77 | .name = "ch7017", | |
78 | .dvo_reg = DVOC, | |
79 | .slave_addr = 0x75, | |
80 | .gpio = GPIOE, | |
81 | .dev_ops = &ch7017_ops, | |
82 | } | |
83 | }; | |
84 | ||
85 | static void intel_dvo_dpms(struct drm_encoder *encoder, int mode) | |
86 | { | |
87 | struct drm_i915_private *dev_priv = encoder->dev->dev_private; | |
88 | struct intel_output *intel_output = enc_to_intel_output(encoder); | |
89 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
90 | u32 dvo_reg = dvo->dvo_reg; | |
91 | u32 temp = I915_READ(dvo_reg); | |
92 | ||
93 | if (mode == DRM_MODE_DPMS_ON) { | |
94 | I915_WRITE(dvo_reg, temp | DVO_ENABLE); | |
95 | I915_READ(dvo_reg); | |
96 | dvo->dev_ops->dpms(dvo, mode); | |
97 | } else { | |
98 | dvo->dev_ops->dpms(dvo, mode); | |
99 | I915_WRITE(dvo_reg, temp & ~DVO_ENABLE); | |
100 | I915_READ(dvo_reg); | |
101 | } | |
102 | } | |
103 | ||
104 | static void intel_dvo_save(struct drm_connector *connector) | |
105 | { | |
106 | struct drm_i915_private *dev_priv = connector->dev->dev_private; | |
107 | struct intel_output *intel_output = to_intel_output(connector); | |
108 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
109 | ||
110 | /* Each output should probably just save the registers it touches, | |
111 | * but for now, use more overkill. | |
112 | */ | |
113 | dev_priv->saveDVOA = I915_READ(DVOA); | |
114 | dev_priv->saveDVOB = I915_READ(DVOB); | |
115 | dev_priv->saveDVOC = I915_READ(DVOC); | |
116 | ||
117 | dvo->dev_ops->save(dvo); | |
118 | } | |
119 | ||
120 | static void intel_dvo_restore(struct drm_connector *connector) | |
121 | { | |
122 | struct drm_i915_private *dev_priv = connector->dev->dev_private; | |
123 | struct intel_output *intel_output = to_intel_output(connector); | |
124 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
125 | ||
126 | dvo->dev_ops->restore(dvo); | |
127 | ||
128 | I915_WRITE(DVOA, dev_priv->saveDVOA); | |
129 | I915_WRITE(DVOB, dev_priv->saveDVOB); | |
130 | I915_WRITE(DVOC, dev_priv->saveDVOC); | |
131 | } | |
132 | ||
133 | static int intel_dvo_mode_valid(struct drm_connector *connector, | |
134 | struct drm_display_mode *mode) | |
135 | { | |
136 | struct intel_output *intel_output = to_intel_output(connector); | |
137 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
138 | ||
139 | if (mode->flags & DRM_MODE_FLAG_DBLSCAN) | |
140 | return MODE_NO_DBLESCAN; | |
141 | ||
142 | /* XXX: Validate clock range */ | |
143 | ||
144 | if (dvo->panel_fixed_mode) { | |
145 | if (mode->hdisplay > dvo->panel_fixed_mode->hdisplay) | |
146 | return MODE_PANEL; | |
147 | if (mode->vdisplay > dvo->panel_fixed_mode->vdisplay) | |
148 | return MODE_PANEL; | |
149 | } | |
150 | ||
151 | return dvo->dev_ops->mode_valid(dvo, mode); | |
152 | } | |
153 | ||
154 | static bool intel_dvo_mode_fixup(struct drm_encoder *encoder, | |
155 | struct drm_display_mode *mode, | |
156 | struct drm_display_mode *adjusted_mode) | |
157 | { | |
158 | struct intel_output *intel_output = enc_to_intel_output(encoder); | |
159 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
160 | ||
161 | /* If we have timings from the BIOS for the panel, put them in | |
162 | * to the adjusted mode. The CRTC will be set up for this mode, | |
163 | * with the panel scaling set up to source from the H/VDisplay | |
164 | * of the original mode. | |
165 | */ | |
166 | if (dvo->panel_fixed_mode != NULL) { | |
167 | #define C(x) adjusted_mode->x = dvo->panel_fixed_mode->x | |
168 | C(hdisplay); | |
169 | C(hsync_start); | |
170 | C(hsync_end); | |
171 | C(htotal); | |
172 | C(vdisplay); | |
173 | C(vsync_start); | |
174 | C(vsync_end); | |
175 | C(vtotal); | |
176 | C(clock); | |
177 | drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V); | |
178 | #undef C | |
179 | } | |
180 | ||
181 | if (dvo->dev_ops->mode_fixup) | |
182 | return dvo->dev_ops->mode_fixup(dvo, mode, adjusted_mode); | |
183 | ||
184 | return true; | |
185 | } | |
186 | ||
187 | static void intel_dvo_mode_set(struct drm_encoder *encoder, | |
188 | struct drm_display_mode *mode, | |
189 | struct drm_display_mode *adjusted_mode) | |
190 | { | |
191 | struct drm_device *dev = encoder->dev; | |
192 | struct drm_i915_private *dev_priv = dev->dev_private; | |
193 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); | |
194 | struct intel_output *intel_output = enc_to_intel_output(encoder); | |
195 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
196 | int pipe = intel_crtc->pipe; | |
197 | u32 dvo_val; | |
198 | u32 dvo_reg = dvo->dvo_reg, dvo_srcdim_reg; | |
199 | int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B; | |
200 | ||
201 | switch (dvo_reg) { | |
202 | case DVOA: | |
203 | default: | |
204 | dvo_srcdim_reg = DVOA_SRCDIM; | |
205 | break; | |
206 | case DVOB: | |
207 | dvo_srcdim_reg = DVOB_SRCDIM; | |
208 | break; | |
209 | case DVOC: | |
210 | dvo_srcdim_reg = DVOC_SRCDIM; | |
211 | break; | |
212 | } | |
213 | ||
214 | dvo->dev_ops->mode_set(dvo, mode, adjusted_mode); | |
215 | ||
216 | /* Save the data order, since I don't know what it should be set to. */ | |
217 | dvo_val = I915_READ(dvo_reg) & | |
218 | (DVO_PRESERVE_MASK | DVO_DATA_ORDER_GBRG); | |
219 | dvo_val |= DVO_DATA_ORDER_FP | DVO_BORDER_ENABLE | | |
220 | DVO_BLANK_ACTIVE_HIGH; | |
221 | ||
222 | if (pipe == 1) | |
223 | dvo_val |= DVO_PIPE_B_SELECT; | |
224 | dvo_val |= DVO_PIPE_STALL; | |
225 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
226 | dvo_val |= DVO_HSYNC_ACTIVE_HIGH; | |
227 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
228 | dvo_val |= DVO_VSYNC_ACTIVE_HIGH; | |
229 | ||
230 | I915_WRITE(dpll_reg, I915_READ(dpll_reg) | DPLL_DVO_HIGH_SPEED); | |
231 | ||
232 | /*I915_WRITE(DVOB_SRCDIM, | |
233 | (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) | | |
234 | (adjusted_mode->VDisplay << DVO_SRCDIM_VERTICAL_SHIFT));*/ | |
235 | I915_WRITE(dvo_srcdim_reg, | |
236 | (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) | | |
237 | (adjusted_mode->vdisplay << DVO_SRCDIM_VERTICAL_SHIFT)); | |
238 | /*I915_WRITE(DVOB, dvo_val);*/ | |
239 | I915_WRITE(dvo_reg, dvo_val); | |
240 | } | |
241 | ||
242 | /** | |
243 | * Detect the output connection on our DVO device. | |
244 | * | |
245 | * Unimplemented. | |
246 | */ | |
247 | static enum drm_connector_status intel_dvo_detect(struct drm_connector *connector) | |
248 | { | |
249 | struct intel_output *intel_output = to_intel_output(connector); | |
250 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
251 | ||
252 | return dvo->dev_ops->detect(dvo); | |
253 | } | |
254 | ||
255 | static int intel_dvo_get_modes(struct drm_connector *connector) | |
256 | { | |
257 | struct intel_output *intel_output = to_intel_output(connector); | |
258 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
259 | ||
260 | /* We should probably have an i2c driver get_modes function for those | |
261 | * devices which will have a fixed set of modes determined by the chip | |
262 | * (TV-out, for example), but for now with just TMDS and LVDS, | |
263 | * that's not the case. | |
264 | */ | |
265 | intel_ddc_get_modes(intel_output); | |
266 | if (!list_empty(&connector->probed_modes)) | |
267 | return 1; | |
268 | ||
269 | ||
270 | if (dvo->panel_fixed_mode != NULL) { | |
271 | struct drm_display_mode *mode; | |
272 | mode = drm_mode_duplicate(connector->dev, dvo->panel_fixed_mode); | |
273 | if (mode) { | |
274 | drm_mode_probed_add(connector, mode); | |
275 | return 1; | |
276 | } | |
277 | } | |
278 | return 0; | |
279 | } | |
280 | ||
281 | static void intel_dvo_destroy (struct drm_connector *connector) | |
282 | { | |
283 | struct intel_output *intel_output = to_intel_output(connector); | |
284 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
285 | ||
286 | if (dvo) { | |
287 | if (dvo->dev_ops->destroy) | |
288 | dvo->dev_ops->destroy(dvo); | |
289 | if (dvo->panel_fixed_mode) | |
290 | kfree(dvo->panel_fixed_mode); | |
291 | /* no need, in i830_dvoices[] now */ | |
292 | //kfree(dvo); | |
293 | } | |
294 | if (intel_output->i2c_bus) | |
295 | intel_i2c_destroy(intel_output->i2c_bus); | |
296 | if (intel_output->ddc_bus) | |
297 | intel_i2c_destroy(intel_output->ddc_bus); | |
298 | drm_sysfs_connector_remove(connector); | |
299 | drm_connector_cleanup(connector); | |
300 | kfree(intel_output); | |
301 | } | |
302 | ||
303 | #ifdef RANDR_GET_CRTC_INTERFACE | |
304 | static struct drm_crtc *intel_dvo_get_crtc(struct drm_connector *connector) | |
305 | { | |
306 | struct drm_device *dev = connector->dev; | |
307 | struct drm_i915_private *dev_priv = dev->dev_private; | |
308 | struct intel_output *intel_output = to_intel_output(connector); | |
309 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
310 | int pipe = !!(I915_READ(dvo->dvo_reg) & SDVO_PIPE_B_SELECT); | |
311 | ||
312 | return intel_pipe_to_crtc(pScrn, pipe); | |
313 | } | |
314 | #endif | |
315 | ||
316 | static const struct drm_encoder_helper_funcs intel_dvo_helper_funcs = { | |
317 | .dpms = intel_dvo_dpms, | |
318 | .mode_fixup = intel_dvo_mode_fixup, | |
319 | .prepare = intel_encoder_prepare, | |
320 | .mode_set = intel_dvo_mode_set, | |
321 | .commit = intel_encoder_commit, | |
322 | }; | |
323 | ||
324 | static const struct drm_connector_funcs intel_dvo_connector_funcs = { | |
325 | .save = intel_dvo_save, | |
326 | .restore = intel_dvo_restore, | |
327 | .detect = intel_dvo_detect, | |
328 | .destroy = intel_dvo_destroy, | |
329 | .fill_modes = drm_helper_probe_single_connector_modes, | |
330 | }; | |
331 | ||
332 | static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs = { | |
333 | .mode_valid = intel_dvo_mode_valid, | |
334 | .get_modes = intel_dvo_get_modes, | |
335 | .best_encoder = intel_best_encoder, | |
336 | }; | |
337 | ||
338 | void intel_dvo_enc_destroy(struct drm_encoder *encoder) | |
339 | { | |
340 | drm_encoder_cleanup(encoder); | |
341 | } | |
342 | ||
343 | static const struct drm_encoder_funcs intel_dvo_enc_funcs = { | |
344 | .destroy = intel_dvo_enc_destroy, | |
345 | }; | |
346 | ||
347 | ||
348 | /** | |
349 | * Attempts to get a fixed panel timing for LVDS (currently only the i830). | |
350 | * | |
351 | * Other chips with DVO LVDS will need to extend this to deal with the LVDS | |
352 | * chip being on DVOB/C and having multiple pipes. | |
353 | */ | |
354 | static struct drm_display_mode * | |
355 | intel_dvo_get_current_mode (struct drm_connector *connector) | |
356 | { | |
357 | struct drm_device *dev = connector->dev; | |
358 | struct drm_i915_private *dev_priv = dev->dev_private; | |
359 | struct intel_output *intel_output = to_intel_output(connector); | |
360 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
361 | uint32_t dvo_reg = dvo->dvo_reg; | |
362 | uint32_t dvo_val = I915_READ(dvo_reg); | |
363 | struct drm_display_mode *mode = NULL; | |
364 | ||
365 | /* If the DVO port is active, that'll be the LVDS, so we can pull out | |
366 | * its timings to get how the BIOS set up the panel. | |
367 | */ | |
368 | if (dvo_val & DVO_ENABLE) { | |
369 | struct drm_crtc *crtc; | |
370 | int pipe = (dvo_val & DVO_PIPE_B_SELECT) ? 1 : 0; | |
371 | ||
372 | crtc = intel_get_crtc_from_pipe(dev, pipe); | |
373 | if (crtc) { | |
374 | mode = intel_crtc_mode_get(dev, crtc); | |
375 | ||
376 | if (mode) { | |
377 | mode->type |= DRM_MODE_TYPE_PREFERRED; | |
378 | if (dvo_val & DVO_HSYNC_ACTIVE_HIGH) | |
379 | mode->flags |= DRM_MODE_FLAG_PHSYNC; | |
380 | if (dvo_val & DVO_VSYNC_ACTIVE_HIGH) | |
381 | mode->flags |= DRM_MODE_FLAG_PVSYNC; | |
382 | } | |
383 | } | |
384 | } | |
385 | return mode; | |
386 | } | |
387 | ||
388 | void intel_dvo_init(struct drm_device *dev) | |
389 | { | |
390 | struct intel_output *intel_output; | |
391 | struct intel_dvo_device *dvo; | |
392 | struct intel_i2c_chan *i2cbus = NULL; | |
393 | int ret = 0; | |
394 | int i; | |
395 | int gpio_inited = 0; | |
396 | int encoder_type = DRM_MODE_ENCODER_NONE; | |
397 | intel_output = kzalloc (sizeof(struct intel_output), GFP_KERNEL); | |
398 | if (!intel_output) | |
399 | return; | |
400 | ||
401 | /* Set up the DDC bus */ | |
402 | intel_output->ddc_bus = intel_i2c_create(dev, GPIOD, "DVODDC_D"); | |
403 | if (!intel_output->ddc_bus) | |
404 | goto free_intel; | |
405 | ||
406 | /* Now, try to find a controller */ | |
407 | for (i = 0; i < ARRAY_SIZE(intel_dvo_devices); i++) { | |
408 | struct drm_connector *connector = &intel_output->base; | |
409 | int gpio; | |
410 | ||
411 | dvo = &intel_dvo_devices[i]; | |
412 | ||
413 | /* Allow the I2C driver info to specify the GPIO to be used in | |
414 | * special cases, but otherwise default to what's defined | |
415 | * in the spec. | |
416 | */ | |
417 | if (dvo->gpio != 0) | |
418 | gpio = dvo->gpio; | |
419 | else if (dvo->type == INTEL_DVO_CHIP_LVDS) | |
420 | gpio = GPIOB; | |
421 | else | |
422 | gpio = GPIOE; | |
423 | ||
424 | /* Set up the I2C bus necessary for the chip we're probing. | |
425 | * It appears that everything is on GPIOE except for panels | |
426 | * on i830 laptops, which are on GPIOB (DVOA). | |
427 | */ | |
428 | if (gpio_inited != gpio) { | |
429 | if (i2cbus != NULL) | |
430 | intel_i2c_destroy(i2cbus); | |
431 | if (!(i2cbus = intel_i2c_create(dev, gpio, | |
432 | gpio == GPIOB ? "DVOI2C_B" : "DVOI2C_E"))) { | |
433 | continue; | |
434 | } | |
435 | gpio_inited = gpio; | |
436 | } | |
437 | ||
438 | if (dvo->dev_ops!= NULL) | |
439 | ret = dvo->dev_ops->init(dvo, i2cbus); | |
440 | else | |
441 | ret = false; | |
442 | ||
443 | if (!ret) | |
444 | continue; | |
445 | ||
446 | intel_output->type = INTEL_OUTPUT_DVO; | |
447 | switch (dvo->type) { | |
448 | case INTEL_DVO_CHIP_TMDS: | |
449 | drm_connector_init(dev, connector, | |
450 | &intel_dvo_connector_funcs, | |
451 | DRM_MODE_CONNECTOR_DVII); | |
452 | encoder_type = DRM_MODE_ENCODER_TMDS; | |
453 | break; | |
454 | case INTEL_DVO_CHIP_LVDS: | |
455 | drm_connector_init(dev, connector, | |
456 | &intel_dvo_connector_funcs, | |
457 | DRM_MODE_CONNECTOR_LVDS); | |
458 | encoder_type = DRM_MODE_ENCODER_LVDS; | |
459 | break; | |
460 | } | |
461 | ||
462 | drm_connector_helper_add(connector, | |
463 | &intel_dvo_connector_helper_funcs); | |
464 | connector->display_info.subpixel_order = SubPixelHorizontalRGB; | |
465 | connector->interlace_allowed = false; | |
466 | connector->doublescan_allowed = false; | |
467 | ||
468 | intel_output->dev_priv = dvo; | |
469 | intel_output->i2c_bus = i2cbus; | |
470 | ||
471 | drm_encoder_init(dev, &intel_output->enc, | |
472 | &intel_dvo_enc_funcs, encoder_type); | |
473 | drm_encoder_helper_add(&intel_output->enc, | |
474 | &intel_dvo_helper_funcs); | |
475 | ||
476 | drm_mode_connector_attach_encoder(&intel_output->base, | |
477 | &intel_output->enc); | |
478 | if (dvo->type == INTEL_DVO_CHIP_LVDS) { | |
479 | /* For our LVDS chipsets, we should hopefully be able | |
480 | * to dig the fixed panel mode out of the BIOS data. | |
481 | * However, it's in a different format from the BIOS | |
482 | * data on chipsets with integrated LVDS (stored in AIM | |
483 | * headers, likely), so for now, just get the current | |
484 | * mode being output through DVO. | |
485 | */ | |
486 | dvo->panel_fixed_mode = | |
487 | intel_dvo_get_current_mode(connector); | |
488 | dvo->panel_wants_dither = true; | |
489 | } | |
490 | ||
491 | drm_sysfs_connector_add(connector); | |
492 | return; | |
493 | } | |
494 | ||
495 | intel_i2c_destroy(intel_output->ddc_bus); | |
496 | /* Didn't find a chip, so tear down. */ | |
497 | if (i2cbus != NULL) | |
498 | intel_i2c_destroy(i2cbus); | |
499 | free_intel: | |
500 | kfree(intel_output); | |
501 | } |