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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 | ||
b358d0a6 | 40 | static struct intel_dvo_device intel_dvo_devices[] = { |
79e53945 JB |
41 | { |
42 | .type = INTEL_DVO_CHIP_TMDS, | |
43 | .name = "sil164", | |
44 | .dvo_reg = DVOC, | |
45 | .slave_addr = SIL164_ADDR, | |
46 | .dev_ops = &sil164_ops, | |
47 | }, | |
48 | { | |
49 | .type = INTEL_DVO_CHIP_TMDS, | |
50 | .name = "ch7xxx", | |
51 | .dvo_reg = DVOC, | |
52 | .slave_addr = CH7xxx_ADDR, | |
53 | .dev_ops = &ch7xxx_ops, | |
54 | }, | |
55 | { | |
56 | .type = INTEL_DVO_CHIP_LVDS, | |
57 | .name = "ivch", | |
58 | .dvo_reg = DVOA, | |
59 | .slave_addr = 0x02, /* Might also be 0x44, 0x84, 0xc4 */ | |
60 | .dev_ops = &ivch_ops, | |
61 | }, | |
62 | { | |
63 | .type = INTEL_DVO_CHIP_TMDS, | |
64 | .name = "tfp410", | |
65 | .dvo_reg = DVOC, | |
66 | .slave_addr = TFP410_ADDR, | |
67 | .dev_ops = &tfp410_ops, | |
68 | }, | |
69 | { | |
70 | .type = INTEL_DVO_CHIP_LVDS, | |
71 | .name = "ch7017", | |
72 | .dvo_reg = DVOC, | |
73 | .slave_addr = 0x75, | |
74 | .gpio = GPIOE, | |
75 | .dev_ops = &ch7017_ops, | |
76 | } | |
77 | }; | |
78 | ||
79 | static void intel_dvo_dpms(struct drm_encoder *encoder, int mode) | |
80 | { | |
81 | struct drm_i915_private *dev_priv = encoder->dev->dev_private; | |
82 | struct intel_output *intel_output = enc_to_intel_output(encoder); | |
83 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
84 | u32 dvo_reg = dvo->dvo_reg; | |
85 | u32 temp = I915_READ(dvo_reg); | |
86 | ||
87 | if (mode == DRM_MODE_DPMS_ON) { | |
88 | I915_WRITE(dvo_reg, temp | DVO_ENABLE); | |
89 | I915_READ(dvo_reg); | |
90 | dvo->dev_ops->dpms(dvo, mode); | |
91 | } else { | |
92 | dvo->dev_ops->dpms(dvo, mode); | |
93 | I915_WRITE(dvo_reg, temp & ~DVO_ENABLE); | |
94 | I915_READ(dvo_reg); | |
95 | } | |
96 | } | |
97 | ||
98 | static void intel_dvo_save(struct drm_connector *connector) | |
99 | { | |
100 | struct drm_i915_private *dev_priv = connector->dev->dev_private; | |
101 | struct intel_output *intel_output = to_intel_output(connector); | |
102 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
103 | ||
104 | /* Each output should probably just save the registers it touches, | |
105 | * but for now, use more overkill. | |
106 | */ | |
107 | dev_priv->saveDVOA = I915_READ(DVOA); | |
108 | dev_priv->saveDVOB = I915_READ(DVOB); | |
109 | dev_priv->saveDVOC = I915_READ(DVOC); | |
110 | ||
111 | dvo->dev_ops->save(dvo); | |
112 | } | |
113 | ||
114 | static void intel_dvo_restore(struct drm_connector *connector) | |
115 | { | |
116 | struct drm_i915_private *dev_priv = connector->dev->dev_private; | |
117 | struct intel_output *intel_output = to_intel_output(connector); | |
118 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
119 | ||
120 | dvo->dev_ops->restore(dvo); | |
121 | ||
122 | I915_WRITE(DVOA, dev_priv->saveDVOA); | |
123 | I915_WRITE(DVOB, dev_priv->saveDVOB); | |
124 | I915_WRITE(DVOC, dev_priv->saveDVOC); | |
125 | } | |
126 | ||
127 | static int intel_dvo_mode_valid(struct drm_connector *connector, | |
128 | struct drm_display_mode *mode) | |
129 | { | |
130 | struct intel_output *intel_output = to_intel_output(connector); | |
131 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
132 | ||
133 | if (mode->flags & DRM_MODE_FLAG_DBLSCAN) | |
134 | return MODE_NO_DBLESCAN; | |
135 | ||
136 | /* XXX: Validate clock range */ | |
137 | ||
138 | if (dvo->panel_fixed_mode) { | |
139 | if (mode->hdisplay > dvo->panel_fixed_mode->hdisplay) | |
140 | return MODE_PANEL; | |
141 | if (mode->vdisplay > dvo->panel_fixed_mode->vdisplay) | |
142 | return MODE_PANEL; | |
143 | } | |
144 | ||
145 | return dvo->dev_ops->mode_valid(dvo, mode); | |
146 | } | |
147 | ||
148 | static bool intel_dvo_mode_fixup(struct drm_encoder *encoder, | |
149 | struct drm_display_mode *mode, | |
150 | struct drm_display_mode *adjusted_mode) | |
151 | { | |
152 | struct intel_output *intel_output = enc_to_intel_output(encoder); | |
153 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
154 | ||
155 | /* If we have timings from the BIOS for the panel, put them in | |
156 | * to the adjusted mode. The CRTC will be set up for this mode, | |
157 | * with the panel scaling set up to source from the H/VDisplay | |
158 | * of the original mode. | |
159 | */ | |
160 | if (dvo->panel_fixed_mode != NULL) { | |
161 | #define C(x) adjusted_mode->x = dvo->panel_fixed_mode->x | |
162 | C(hdisplay); | |
163 | C(hsync_start); | |
164 | C(hsync_end); | |
165 | C(htotal); | |
166 | C(vdisplay); | |
167 | C(vsync_start); | |
168 | C(vsync_end); | |
169 | C(vtotal); | |
170 | C(clock); | |
171 | drm_mode_set_crtcinfo(adjusted_mode, CRTC_INTERLACE_HALVE_V); | |
172 | #undef C | |
173 | } | |
174 | ||
175 | if (dvo->dev_ops->mode_fixup) | |
176 | return dvo->dev_ops->mode_fixup(dvo, mode, adjusted_mode); | |
177 | ||
178 | return true; | |
179 | } | |
180 | ||
181 | static void intel_dvo_mode_set(struct drm_encoder *encoder, | |
182 | struct drm_display_mode *mode, | |
183 | struct drm_display_mode *adjusted_mode) | |
184 | { | |
185 | struct drm_device *dev = encoder->dev; | |
186 | struct drm_i915_private *dev_priv = dev->dev_private; | |
187 | struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc); | |
188 | struct intel_output *intel_output = enc_to_intel_output(encoder); | |
189 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
190 | int pipe = intel_crtc->pipe; | |
191 | u32 dvo_val; | |
192 | u32 dvo_reg = dvo->dvo_reg, dvo_srcdim_reg; | |
193 | int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B; | |
194 | ||
195 | switch (dvo_reg) { | |
196 | case DVOA: | |
197 | default: | |
198 | dvo_srcdim_reg = DVOA_SRCDIM; | |
199 | break; | |
200 | case DVOB: | |
201 | dvo_srcdim_reg = DVOB_SRCDIM; | |
202 | break; | |
203 | case DVOC: | |
204 | dvo_srcdim_reg = DVOC_SRCDIM; | |
205 | break; | |
206 | } | |
207 | ||
208 | dvo->dev_ops->mode_set(dvo, mode, adjusted_mode); | |
209 | ||
210 | /* Save the data order, since I don't know what it should be set to. */ | |
211 | dvo_val = I915_READ(dvo_reg) & | |
212 | (DVO_PRESERVE_MASK | DVO_DATA_ORDER_GBRG); | |
213 | dvo_val |= DVO_DATA_ORDER_FP | DVO_BORDER_ENABLE | | |
214 | DVO_BLANK_ACTIVE_HIGH; | |
215 | ||
216 | if (pipe == 1) | |
217 | dvo_val |= DVO_PIPE_B_SELECT; | |
218 | dvo_val |= DVO_PIPE_STALL; | |
219 | if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) | |
220 | dvo_val |= DVO_HSYNC_ACTIVE_HIGH; | |
221 | if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) | |
222 | dvo_val |= DVO_VSYNC_ACTIVE_HIGH; | |
223 | ||
224 | I915_WRITE(dpll_reg, I915_READ(dpll_reg) | DPLL_DVO_HIGH_SPEED); | |
225 | ||
226 | /*I915_WRITE(DVOB_SRCDIM, | |
227 | (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) | | |
228 | (adjusted_mode->VDisplay << DVO_SRCDIM_VERTICAL_SHIFT));*/ | |
229 | I915_WRITE(dvo_srcdim_reg, | |
230 | (adjusted_mode->hdisplay << DVO_SRCDIM_HORIZONTAL_SHIFT) | | |
231 | (adjusted_mode->vdisplay << DVO_SRCDIM_VERTICAL_SHIFT)); | |
232 | /*I915_WRITE(DVOB, dvo_val);*/ | |
233 | I915_WRITE(dvo_reg, dvo_val); | |
234 | } | |
235 | ||
236 | /** | |
237 | * Detect the output connection on our DVO device. | |
238 | * | |
239 | * Unimplemented. | |
240 | */ | |
241 | static enum drm_connector_status intel_dvo_detect(struct drm_connector *connector) | |
242 | { | |
243 | struct intel_output *intel_output = to_intel_output(connector); | |
244 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
245 | ||
246 | return dvo->dev_ops->detect(dvo); | |
247 | } | |
248 | ||
249 | static int intel_dvo_get_modes(struct drm_connector *connector) | |
250 | { | |
251 | struct intel_output *intel_output = to_intel_output(connector); | |
252 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
253 | ||
254 | /* We should probably have an i2c driver get_modes function for those | |
255 | * devices which will have a fixed set of modes determined by the chip | |
256 | * (TV-out, for example), but for now with just TMDS and LVDS, | |
257 | * that's not the case. | |
258 | */ | |
259 | intel_ddc_get_modes(intel_output); | |
260 | if (!list_empty(&connector->probed_modes)) | |
261 | return 1; | |
262 | ||
263 | ||
264 | if (dvo->panel_fixed_mode != NULL) { | |
265 | struct drm_display_mode *mode; | |
266 | mode = drm_mode_duplicate(connector->dev, dvo->panel_fixed_mode); | |
267 | if (mode) { | |
268 | drm_mode_probed_add(connector, mode); | |
269 | return 1; | |
270 | } | |
271 | } | |
272 | return 0; | |
273 | } | |
274 | ||
275 | static void intel_dvo_destroy (struct drm_connector *connector) | |
276 | { | |
277 | struct intel_output *intel_output = to_intel_output(connector); | |
278 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
279 | ||
280 | if (dvo) { | |
281 | if (dvo->dev_ops->destroy) | |
282 | dvo->dev_ops->destroy(dvo); | |
283 | if (dvo->panel_fixed_mode) | |
284 | kfree(dvo->panel_fixed_mode); | |
285 | /* no need, in i830_dvoices[] now */ | |
286 | //kfree(dvo); | |
287 | } | |
288 | if (intel_output->i2c_bus) | |
289 | intel_i2c_destroy(intel_output->i2c_bus); | |
290 | if (intel_output->ddc_bus) | |
291 | intel_i2c_destroy(intel_output->ddc_bus); | |
292 | drm_sysfs_connector_remove(connector); | |
293 | drm_connector_cleanup(connector); | |
294 | kfree(intel_output); | |
295 | } | |
296 | ||
297 | #ifdef RANDR_GET_CRTC_INTERFACE | |
298 | static struct drm_crtc *intel_dvo_get_crtc(struct drm_connector *connector) | |
299 | { | |
300 | struct drm_device *dev = connector->dev; | |
301 | struct drm_i915_private *dev_priv = dev->dev_private; | |
302 | struct intel_output *intel_output = to_intel_output(connector); | |
303 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
304 | int pipe = !!(I915_READ(dvo->dvo_reg) & SDVO_PIPE_B_SELECT); | |
305 | ||
306 | return intel_pipe_to_crtc(pScrn, pipe); | |
307 | } | |
308 | #endif | |
309 | ||
310 | static const struct drm_encoder_helper_funcs intel_dvo_helper_funcs = { | |
311 | .dpms = intel_dvo_dpms, | |
312 | .mode_fixup = intel_dvo_mode_fixup, | |
313 | .prepare = intel_encoder_prepare, | |
314 | .mode_set = intel_dvo_mode_set, | |
315 | .commit = intel_encoder_commit, | |
316 | }; | |
317 | ||
318 | static const struct drm_connector_funcs intel_dvo_connector_funcs = { | |
319 | .save = intel_dvo_save, | |
320 | .restore = intel_dvo_restore, | |
321 | .detect = intel_dvo_detect, | |
322 | .destroy = intel_dvo_destroy, | |
323 | .fill_modes = drm_helper_probe_single_connector_modes, | |
324 | }; | |
325 | ||
326 | static const struct drm_connector_helper_funcs intel_dvo_connector_helper_funcs = { | |
327 | .mode_valid = intel_dvo_mode_valid, | |
328 | .get_modes = intel_dvo_get_modes, | |
329 | .best_encoder = intel_best_encoder, | |
330 | }; | |
331 | ||
b358d0a6 | 332 | static void intel_dvo_enc_destroy(struct drm_encoder *encoder) |
79e53945 JB |
333 | { |
334 | drm_encoder_cleanup(encoder); | |
335 | } | |
336 | ||
337 | static const struct drm_encoder_funcs intel_dvo_enc_funcs = { | |
338 | .destroy = intel_dvo_enc_destroy, | |
339 | }; | |
340 | ||
341 | ||
342 | /** | |
343 | * Attempts to get a fixed panel timing for LVDS (currently only the i830). | |
344 | * | |
345 | * Other chips with DVO LVDS will need to extend this to deal with the LVDS | |
346 | * chip being on DVOB/C and having multiple pipes. | |
347 | */ | |
348 | static struct drm_display_mode * | |
349 | intel_dvo_get_current_mode (struct drm_connector *connector) | |
350 | { | |
351 | struct drm_device *dev = connector->dev; | |
352 | struct drm_i915_private *dev_priv = dev->dev_private; | |
353 | struct intel_output *intel_output = to_intel_output(connector); | |
354 | struct intel_dvo_device *dvo = intel_output->dev_priv; | |
355 | uint32_t dvo_reg = dvo->dvo_reg; | |
356 | uint32_t dvo_val = I915_READ(dvo_reg); | |
357 | struct drm_display_mode *mode = NULL; | |
358 | ||
359 | /* If the DVO port is active, that'll be the LVDS, so we can pull out | |
360 | * its timings to get how the BIOS set up the panel. | |
361 | */ | |
362 | if (dvo_val & DVO_ENABLE) { | |
363 | struct drm_crtc *crtc; | |
364 | int pipe = (dvo_val & DVO_PIPE_B_SELECT) ? 1 : 0; | |
365 | ||
366 | crtc = intel_get_crtc_from_pipe(dev, pipe); | |
367 | if (crtc) { | |
368 | mode = intel_crtc_mode_get(dev, crtc); | |
369 | ||
370 | if (mode) { | |
371 | mode->type |= DRM_MODE_TYPE_PREFERRED; | |
372 | if (dvo_val & DVO_HSYNC_ACTIVE_HIGH) | |
373 | mode->flags |= DRM_MODE_FLAG_PHSYNC; | |
374 | if (dvo_val & DVO_VSYNC_ACTIVE_HIGH) | |
375 | mode->flags |= DRM_MODE_FLAG_PVSYNC; | |
376 | } | |
377 | } | |
378 | } | |
379 | return mode; | |
380 | } | |
381 | ||
382 | void intel_dvo_init(struct drm_device *dev) | |
383 | { | |
384 | struct intel_output *intel_output; | |
385 | struct intel_dvo_device *dvo; | |
386 | struct intel_i2c_chan *i2cbus = NULL; | |
387 | int ret = 0; | |
388 | int i; | |
389 | int gpio_inited = 0; | |
390 | int encoder_type = DRM_MODE_ENCODER_NONE; | |
391 | intel_output = kzalloc (sizeof(struct intel_output), GFP_KERNEL); | |
392 | if (!intel_output) | |
393 | return; | |
394 | ||
395 | /* Set up the DDC bus */ | |
396 | intel_output->ddc_bus = intel_i2c_create(dev, GPIOD, "DVODDC_D"); | |
397 | if (!intel_output->ddc_bus) | |
398 | goto free_intel; | |
399 | ||
400 | /* Now, try to find a controller */ | |
401 | for (i = 0; i < ARRAY_SIZE(intel_dvo_devices); i++) { | |
402 | struct drm_connector *connector = &intel_output->base; | |
403 | int gpio; | |
404 | ||
405 | dvo = &intel_dvo_devices[i]; | |
406 | ||
407 | /* Allow the I2C driver info to specify the GPIO to be used in | |
408 | * special cases, but otherwise default to what's defined | |
409 | * in the spec. | |
410 | */ | |
411 | if (dvo->gpio != 0) | |
412 | gpio = dvo->gpio; | |
413 | else if (dvo->type == INTEL_DVO_CHIP_LVDS) | |
414 | gpio = GPIOB; | |
415 | else | |
416 | gpio = GPIOE; | |
417 | ||
418 | /* Set up the I2C bus necessary for the chip we're probing. | |
419 | * It appears that everything is on GPIOE except for panels | |
420 | * on i830 laptops, which are on GPIOB (DVOA). | |
421 | */ | |
422 | if (gpio_inited != gpio) { | |
423 | if (i2cbus != NULL) | |
424 | intel_i2c_destroy(i2cbus); | |
425 | if (!(i2cbus = intel_i2c_create(dev, gpio, | |
426 | gpio == GPIOB ? "DVOI2C_B" : "DVOI2C_E"))) { | |
427 | continue; | |
428 | } | |
429 | gpio_inited = gpio; | |
430 | } | |
431 | ||
432 | if (dvo->dev_ops!= NULL) | |
433 | ret = dvo->dev_ops->init(dvo, i2cbus); | |
434 | else | |
435 | ret = false; | |
436 | ||
437 | if (!ret) | |
438 | continue; | |
439 | ||
440 | intel_output->type = INTEL_OUTPUT_DVO; | |
441 | switch (dvo->type) { | |
442 | case INTEL_DVO_CHIP_TMDS: | |
443 | drm_connector_init(dev, connector, | |
444 | &intel_dvo_connector_funcs, | |
445 | DRM_MODE_CONNECTOR_DVII); | |
446 | encoder_type = DRM_MODE_ENCODER_TMDS; | |
447 | break; | |
448 | case INTEL_DVO_CHIP_LVDS: | |
449 | drm_connector_init(dev, connector, | |
450 | &intel_dvo_connector_funcs, | |
451 | DRM_MODE_CONNECTOR_LVDS); | |
452 | encoder_type = DRM_MODE_ENCODER_LVDS; | |
453 | break; | |
454 | } | |
455 | ||
456 | drm_connector_helper_add(connector, | |
457 | &intel_dvo_connector_helper_funcs); | |
458 | connector->display_info.subpixel_order = SubPixelHorizontalRGB; | |
459 | connector->interlace_allowed = false; | |
460 | connector->doublescan_allowed = false; | |
461 | ||
462 | intel_output->dev_priv = dvo; | |
463 | intel_output->i2c_bus = i2cbus; | |
464 | ||
465 | drm_encoder_init(dev, &intel_output->enc, | |
466 | &intel_dvo_enc_funcs, encoder_type); | |
467 | drm_encoder_helper_add(&intel_output->enc, | |
468 | &intel_dvo_helper_funcs); | |
469 | ||
470 | drm_mode_connector_attach_encoder(&intel_output->base, | |
471 | &intel_output->enc); | |
472 | if (dvo->type == INTEL_DVO_CHIP_LVDS) { | |
473 | /* For our LVDS chipsets, we should hopefully be able | |
474 | * to dig the fixed panel mode out of the BIOS data. | |
475 | * However, it's in a different format from the BIOS | |
476 | * data on chipsets with integrated LVDS (stored in AIM | |
477 | * headers, likely), so for now, just get the current | |
478 | * mode being output through DVO. | |
479 | */ | |
480 | dvo->panel_fixed_mode = | |
481 | intel_dvo_get_current_mode(connector); | |
482 | dvo->panel_wants_dither = true; | |
483 | } | |
484 | ||
485 | drm_sysfs_connector_add(connector); | |
486 | return; | |
487 | } | |
488 | ||
489 | intel_i2c_destroy(intel_output->ddc_bus); | |
490 | /* Didn't find a chip, so tear down. */ | |
491 | if (i2cbus != NULL) | |
492 | intel_i2c_destroy(i2cbus); | |
493 | free_intel: | |
494 | kfree(intel_output); | |
495 | } |