Merge branch 'dma-debug' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux...
[linux-2.6] / drivers / gpu / drm / i915 / intel_sdvo.c
1 /*
2  * Copyright 2006 Dave Airlie <airlied@linux.ie>
3  * Copyright © 2006-2007 Intel Corporation
4  *   Jesse Barnes <jesse.barnes@intel.com>
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice (including the next
14  * paragraph) shall be included in all copies or substantial portions of the
15  * Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23  * DEALINGS IN THE SOFTWARE.
24  *
25  * Authors:
26  *      Eric Anholt <eric@anholt.net>
27  */
28 #include <linux/i2c.h>
29 #include <linux/delay.h>
30 #include "drmP.h"
31 #include "drm.h"
32 #include "drm_crtc.h"
33 #include "intel_drv.h"
34 #include "i915_drm.h"
35 #include "i915_drv.h"
36 #include "intel_sdvo_regs.h"
37
38 #undef SDVO_DEBUG
39
40 struct intel_sdvo_priv {
41         struct intel_i2c_chan *i2c_bus;
42         int slaveaddr;
43
44         /* Register for the SDVO device: SDVOB or SDVOC */
45         int output_device;
46
47         /* Active outputs controlled by this SDVO output */
48         uint16_t controlled_output;
49
50         /*
51          * Capabilities of the SDVO device returned by
52          * i830_sdvo_get_capabilities()
53          */
54         struct intel_sdvo_caps caps;
55
56         /* Pixel clock limitations reported by the SDVO device, in kHz */
57         int pixel_clock_min, pixel_clock_max;
58
59         /**
60          * This is set if we're going to treat the device as TV-out.
61          *
62          * While we have these nice friendly flags for output types that ought
63          * to decide this for us, the S-Video output on our HDMI+S-Video card
64          * shows up as RGB1 (VGA).
65          */
66         bool is_tv;
67
68         /**
69          * This is set if we treat the device as HDMI, instead of DVI.
70          */
71         bool is_hdmi;
72
73         /**
74          * Returned SDTV resolutions allowed for the current format, if the
75          * device reported it.
76          */
77         struct intel_sdvo_sdtv_resolution_reply sdtv_resolutions;
78
79         /**
80          * Current selected TV format.
81          *
82          * This is stored in the same structure that's passed to the device, for
83          * convenience.
84          */
85         struct intel_sdvo_tv_format tv_format;
86
87         /*
88          * supported encoding mode, used to determine whether HDMI is
89          * supported
90          */
91         struct intel_sdvo_encode encode;
92
93         /* DDC bus used by this SDVO output */
94         uint8_t ddc_bus;
95
96         int save_sdvo_mult;
97         u16 save_active_outputs;
98         struct intel_sdvo_dtd save_input_dtd_1, save_input_dtd_2;
99         struct intel_sdvo_dtd save_output_dtd[16];
100         u32 save_SDVOX;
101 };
102
103 /**
104  * Writes the SDVOB or SDVOC with the given value, but always writes both
105  * SDVOB and SDVOC to work around apparent hardware issues (according to
106  * comments in the BIOS).
107  */
108 static void intel_sdvo_write_sdvox(struct intel_output *intel_output, u32 val)
109 {
110         struct drm_device *dev = intel_output->base.dev;
111         struct drm_i915_private *dev_priv = dev->dev_private;
112         struct intel_sdvo_priv   *sdvo_priv = intel_output->dev_priv;
113         u32 bval = val, cval = val;
114         int i;
115
116         if (sdvo_priv->output_device == SDVOB) {
117                 cval = I915_READ(SDVOC);
118         } else {
119                 bval = I915_READ(SDVOB);
120         }
121         /*
122          * Write the registers twice for luck. Sometimes,
123          * writing them only once doesn't appear to 'stick'.
124          * The BIOS does this too. Yay, magic
125          */
126         for (i = 0; i < 2; i++)
127         {
128                 I915_WRITE(SDVOB, bval);
129                 I915_READ(SDVOB);
130                 I915_WRITE(SDVOC, cval);
131                 I915_READ(SDVOC);
132         }
133 }
134
135 static bool intel_sdvo_read_byte(struct intel_output *intel_output, u8 addr,
136                                  u8 *ch)
137 {
138         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
139         u8 out_buf[2];
140         u8 buf[2];
141         int ret;
142
143         struct i2c_msg msgs[] = {
144                 {
145                         .addr = sdvo_priv->i2c_bus->slave_addr,
146                         .flags = 0,
147                         .len = 1,
148                         .buf = out_buf,
149                 },
150                 {
151                         .addr = sdvo_priv->i2c_bus->slave_addr,
152                         .flags = I2C_M_RD,
153                         .len = 1,
154                         .buf = buf,
155                 }
156         };
157
158         out_buf[0] = addr;
159         out_buf[1] = 0;
160
161         if ((ret = i2c_transfer(&sdvo_priv->i2c_bus->adapter, msgs, 2)) == 2)
162         {
163                 *ch = buf[0];
164                 return true;
165         }
166
167         DRM_DEBUG("i2c transfer returned %d\n", ret);
168         return false;
169 }
170
171 static bool intel_sdvo_write_byte(struct intel_output *intel_output, int addr,
172                                   u8 ch)
173 {
174         u8 out_buf[2];
175         struct i2c_msg msgs[] = {
176                 {
177                         .addr = intel_output->i2c_bus->slave_addr,
178                         .flags = 0,
179                         .len = 2,
180                         .buf = out_buf,
181                 }
182         };
183
184         out_buf[0] = addr;
185         out_buf[1] = ch;
186
187         if (i2c_transfer(&intel_output->i2c_bus->adapter, msgs, 1) == 1)
188         {
189                 return true;
190         }
191         return false;
192 }
193
194 #define SDVO_CMD_NAME_ENTRY(cmd) {cmd, #cmd}
195 /** Mapping of command numbers to names, for debug output */
196 static const struct _sdvo_cmd_name {
197         u8 cmd;
198         char *name;
199 } sdvo_cmd_names[] = {
200     SDVO_CMD_NAME_ENTRY(SDVO_CMD_RESET),
201     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_DEVICE_CAPS),
202     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_FIRMWARE_REV),
203     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_TRAINED_INPUTS),
204     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_ACTIVE_OUTPUTS),
205     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_ACTIVE_OUTPUTS),
206     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_IN_OUT_MAP),
207     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_IN_OUT_MAP),
208     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_ATTACHED_DISPLAYS),
209     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_HOT_PLUG_SUPPORT),
210     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_ACTIVE_HOT_PLUG),
211     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_ACTIVE_HOT_PLUG),
212     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_INTERRUPT_EVENT_SOURCE),
213     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_TARGET_INPUT),
214     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_TARGET_OUTPUT),
215     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_INPUT_TIMINGS_PART1),
216     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_INPUT_TIMINGS_PART2),
217     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_INPUT_TIMINGS_PART1),
218     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_INPUT_TIMINGS_PART2),
219     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_INPUT_TIMINGS_PART1),
220     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_OUTPUT_TIMINGS_PART1),
221     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_OUTPUT_TIMINGS_PART2),
222     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_OUTPUT_TIMINGS_PART1),
223     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_OUTPUT_TIMINGS_PART2),
224     SDVO_CMD_NAME_ENTRY(SDVO_CMD_CREATE_PREFERRED_INPUT_TIMING),
225     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART1),
226     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART2),
227     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_INPUT_PIXEL_CLOCK_RANGE),
228     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_OUTPUT_PIXEL_CLOCK_RANGE),
229     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_SUPPORTED_CLOCK_RATE_MULTS),
230     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_CLOCK_RATE_MULT),
231     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_CLOCK_RATE_MULT),
232     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_SUPPORTED_TV_FORMATS),
233     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_TV_FORMAT),
234     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_TV_FORMAT),
235     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_SUPPORTED_POWER_STATES),
236     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_POWER_STATE),
237     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_ENCODER_POWER_STATE),
238     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_DISPLAY_POWER_STATE),
239     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_CONTROL_BUS_SWITCH),
240     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_SDTV_RESOLUTION_SUPPORT),
241     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_SCALED_HDTV_RESOLUTION_SUPPORT),
242     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_SUPPORTED_ENHANCEMENTS),
243     /* HDMI op code */
244     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_SUPP_ENCODE),
245     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_ENCODE),
246     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_ENCODE),
247     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_PIXEL_REPLI),
248     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_PIXEL_REPLI),
249     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_COLORIMETRY_CAP),
250     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_COLORIMETRY),
251     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_COLORIMETRY),
252     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_AUDIO_ENCRYPT_PREFER),
253     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_AUDIO_STAT),
254     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_AUDIO_STAT),
255     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_HBUF_INDEX),
256     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_HBUF_INDEX),
257     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_HBUF_INFO),
258     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_HBUF_AV_SPLIT),
259     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_HBUF_AV_SPLIT),
260     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_HBUF_TXRATE),
261     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_HBUF_TXRATE),
262     SDVO_CMD_NAME_ENTRY(SDVO_CMD_SET_HBUF_DATA),
263     SDVO_CMD_NAME_ENTRY(SDVO_CMD_GET_HBUF_DATA),
264 };
265
266 #define SDVO_NAME(dev_priv) ((dev_priv)->output_device == SDVOB ? "SDVOB" : "SDVOC")
267 #define SDVO_PRIV(output)   ((struct intel_sdvo_priv *) (output)->dev_priv)
268
269 #ifdef SDVO_DEBUG
270 static void intel_sdvo_debug_write(struct intel_output *intel_output, u8 cmd,
271                                    void *args, int args_len)
272 {
273         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
274         int i;
275
276         printk(KERN_DEBUG "%s: W: %02X ", SDVO_NAME(sdvo_priv), cmd);
277         for (i = 0; i < args_len; i++)
278                 printk(KERN_DEBUG "%02X ", ((u8 *)args)[i]);
279         for (; i < 8; i++)
280                 printk(KERN_DEBUG "   ");
281         for (i = 0; i < sizeof(sdvo_cmd_names) / sizeof(sdvo_cmd_names[0]); i++) {
282                 if (cmd == sdvo_cmd_names[i].cmd) {
283                         printk(KERN_DEBUG "(%s)", sdvo_cmd_names[i].name);
284                         break;
285                 }
286         }
287         if (i == sizeof(sdvo_cmd_names)/ sizeof(sdvo_cmd_names[0]))
288                 printk(KERN_DEBUG "(%02X)", cmd);
289         printk(KERN_DEBUG "\n");
290 }
291 #else
292 #define intel_sdvo_debug_write(o, c, a, l)
293 #endif
294
295 static void intel_sdvo_write_cmd(struct intel_output *intel_output, u8 cmd,
296                                  void *args, int args_len)
297 {
298         int i;
299
300         intel_sdvo_debug_write(intel_output, cmd, args, args_len);
301
302         for (i = 0; i < args_len; i++) {
303                 intel_sdvo_write_byte(intel_output, SDVO_I2C_ARG_0 - i,
304                                       ((u8*)args)[i]);
305         }
306
307         intel_sdvo_write_byte(intel_output, SDVO_I2C_OPCODE, cmd);
308 }
309
310 #ifdef SDVO_DEBUG
311 static const char *cmd_status_names[] = {
312         "Power on",
313         "Success",
314         "Not supported",
315         "Invalid arg",
316         "Pending",
317         "Target not specified",
318         "Scaling not supported"
319 };
320
321 static void intel_sdvo_debug_response(struct intel_output *intel_output,
322                                       void *response, int response_len,
323                                       u8 status)
324 {
325         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
326         int i;
327
328         printk(KERN_DEBUG "%s: R: ", SDVO_NAME(sdvo_priv));
329         for (i = 0; i < response_len; i++)
330                 printk(KERN_DEBUG "%02X ", ((u8 *)response)[i]);
331         for (; i < 8; i++)
332                 printk(KERN_DEBUG "   ");
333         if (status <= SDVO_CMD_STATUS_SCALING_NOT_SUPP)
334                 printk(KERN_DEBUG "(%s)", cmd_status_names[status]);
335         else
336                 printk(KERN_DEBUG "(??? %d)", status);
337         printk(KERN_DEBUG "\n");
338 }
339 #else
340 #define intel_sdvo_debug_response(o, r, l, s)
341 #endif
342
343 static u8 intel_sdvo_read_response(struct intel_output *intel_output,
344                                    void *response, int response_len)
345 {
346         int i;
347         u8 status;
348         u8 retry = 50;
349
350         while (retry--) {
351                 /* Read the command response */
352                 for (i = 0; i < response_len; i++) {
353                         intel_sdvo_read_byte(intel_output,
354                                              SDVO_I2C_RETURN_0 + i,
355                                              &((u8 *)response)[i]);
356                 }
357
358                 /* read the return status */
359                 intel_sdvo_read_byte(intel_output, SDVO_I2C_CMD_STATUS,
360                                      &status);
361
362                 intel_sdvo_debug_response(intel_output, response, response_len,
363                                           status);
364                 if (status != SDVO_CMD_STATUS_PENDING)
365                         return status;
366
367                 mdelay(50);
368         }
369
370         return status;
371 }
372
373 static int intel_sdvo_get_pixel_multiplier(struct drm_display_mode *mode)
374 {
375         if (mode->clock >= 100000)
376                 return 1;
377         else if (mode->clock >= 50000)
378                 return 2;
379         else
380                 return 4;
381 }
382
383 /**
384  * Don't check status code from this as it switches the bus back to the
385  * SDVO chips which defeats the purpose of doing a bus switch in the first
386  * place.
387  */
388 static void intel_sdvo_set_control_bus_switch(struct intel_output *intel_output,
389                                               u8 target)
390 {
391         intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_CONTROL_BUS_SWITCH, &target, 1);
392 }
393
394 static bool intel_sdvo_set_target_input(struct intel_output *intel_output, bool target_0, bool target_1)
395 {
396         struct intel_sdvo_set_target_input_args targets = {0};
397         u8 status;
398
399         if (target_0 && target_1)
400                 return SDVO_CMD_STATUS_NOTSUPP;
401
402         if (target_1)
403                 targets.target_1 = 1;
404
405         intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_TARGET_INPUT, &targets,
406                              sizeof(targets));
407
408         status = intel_sdvo_read_response(intel_output, NULL, 0);
409
410         return (status == SDVO_CMD_STATUS_SUCCESS);
411 }
412
413 /**
414  * Return whether each input is trained.
415  *
416  * This function is making an assumption about the layout of the response,
417  * which should be checked against the docs.
418  */
419 static bool intel_sdvo_get_trained_inputs(struct intel_output *intel_output, bool *input_1, bool *input_2)
420 {
421         struct intel_sdvo_get_trained_inputs_response response;
422         u8 status;
423
424         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_TRAINED_INPUTS, NULL, 0);
425         status = intel_sdvo_read_response(intel_output, &response, sizeof(response));
426         if (status != SDVO_CMD_STATUS_SUCCESS)
427                 return false;
428
429         *input_1 = response.input0_trained;
430         *input_2 = response.input1_trained;
431         return true;
432 }
433
434 static bool intel_sdvo_get_active_outputs(struct intel_output *intel_output,
435                                           u16 *outputs)
436 {
437         u8 status;
438
439         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_ACTIVE_OUTPUTS, NULL, 0);
440         status = intel_sdvo_read_response(intel_output, outputs, sizeof(*outputs));
441
442         return (status == SDVO_CMD_STATUS_SUCCESS);
443 }
444
445 static bool intel_sdvo_set_active_outputs(struct intel_output *intel_output,
446                                           u16 outputs)
447 {
448         u8 status;
449
450         intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_ACTIVE_OUTPUTS, &outputs,
451                              sizeof(outputs));
452         status = intel_sdvo_read_response(intel_output, NULL, 0);
453         return (status == SDVO_CMD_STATUS_SUCCESS);
454 }
455
456 static bool intel_sdvo_set_encoder_power_state(struct intel_output *intel_output,
457                                                int mode)
458 {
459         u8 status, state = SDVO_ENCODER_STATE_ON;
460
461         switch (mode) {
462         case DRM_MODE_DPMS_ON:
463                 state = SDVO_ENCODER_STATE_ON;
464                 break;
465         case DRM_MODE_DPMS_STANDBY:
466                 state = SDVO_ENCODER_STATE_STANDBY;
467                 break;
468         case DRM_MODE_DPMS_SUSPEND:
469                 state = SDVO_ENCODER_STATE_SUSPEND;
470                 break;
471         case DRM_MODE_DPMS_OFF:
472                 state = SDVO_ENCODER_STATE_OFF;
473                 break;
474         }
475
476         intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_ENCODER_POWER_STATE, &state,
477                              sizeof(state));
478         status = intel_sdvo_read_response(intel_output, NULL, 0);
479
480         return (status == SDVO_CMD_STATUS_SUCCESS);
481 }
482
483 static bool intel_sdvo_get_input_pixel_clock_range(struct intel_output *intel_output,
484                                                    int *clock_min,
485                                                    int *clock_max)
486 {
487         struct intel_sdvo_pixel_clock_range clocks;
488         u8 status;
489
490         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_INPUT_PIXEL_CLOCK_RANGE,
491                              NULL, 0);
492
493         status = intel_sdvo_read_response(intel_output, &clocks, sizeof(clocks));
494
495         if (status != SDVO_CMD_STATUS_SUCCESS)
496                 return false;
497
498         /* Convert the values from units of 10 kHz to kHz. */
499         *clock_min = clocks.min * 10;
500         *clock_max = clocks.max * 10;
501
502         return true;
503 }
504
505 static bool intel_sdvo_set_target_output(struct intel_output *intel_output,
506                                          u16 outputs)
507 {
508         u8 status;
509
510         intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_TARGET_OUTPUT, &outputs,
511                              sizeof(outputs));
512
513         status = intel_sdvo_read_response(intel_output, NULL, 0);
514         return (status == SDVO_CMD_STATUS_SUCCESS);
515 }
516
517 static bool intel_sdvo_get_timing(struct intel_output *intel_output, u8 cmd,
518                                   struct intel_sdvo_dtd *dtd)
519 {
520         u8 status;
521
522         intel_sdvo_write_cmd(intel_output, cmd, NULL, 0);
523         status = intel_sdvo_read_response(intel_output, &dtd->part1,
524                                           sizeof(dtd->part1));
525         if (status != SDVO_CMD_STATUS_SUCCESS)
526                 return false;
527
528         intel_sdvo_write_cmd(intel_output, cmd + 1, NULL, 0);
529         status = intel_sdvo_read_response(intel_output, &dtd->part2,
530                                           sizeof(dtd->part2));
531         if (status != SDVO_CMD_STATUS_SUCCESS)
532                 return false;
533
534         return true;
535 }
536
537 static bool intel_sdvo_get_input_timing(struct intel_output *intel_output,
538                                          struct intel_sdvo_dtd *dtd)
539 {
540         return intel_sdvo_get_timing(intel_output,
541                                      SDVO_CMD_GET_INPUT_TIMINGS_PART1, dtd);
542 }
543
544 static bool intel_sdvo_get_output_timing(struct intel_output *intel_output,
545                                          struct intel_sdvo_dtd *dtd)
546 {
547         return intel_sdvo_get_timing(intel_output,
548                                      SDVO_CMD_GET_OUTPUT_TIMINGS_PART1, dtd);
549 }
550
551 static bool intel_sdvo_set_timing(struct intel_output *intel_output, u8 cmd,
552                                   struct intel_sdvo_dtd *dtd)
553 {
554         u8 status;
555
556         intel_sdvo_write_cmd(intel_output, cmd, &dtd->part1, sizeof(dtd->part1));
557         status = intel_sdvo_read_response(intel_output, NULL, 0);
558         if (status != SDVO_CMD_STATUS_SUCCESS)
559                 return false;
560
561         intel_sdvo_write_cmd(intel_output, cmd + 1, &dtd->part2, sizeof(dtd->part2));
562         status = intel_sdvo_read_response(intel_output, NULL, 0);
563         if (status != SDVO_CMD_STATUS_SUCCESS)
564                 return false;
565
566         return true;
567 }
568
569 static bool intel_sdvo_set_input_timing(struct intel_output *intel_output,
570                                          struct intel_sdvo_dtd *dtd)
571 {
572         return intel_sdvo_set_timing(intel_output,
573                                      SDVO_CMD_SET_INPUT_TIMINGS_PART1, dtd);
574 }
575
576 static bool intel_sdvo_set_output_timing(struct intel_output *intel_output,
577                                          struct intel_sdvo_dtd *dtd)
578 {
579         return intel_sdvo_set_timing(intel_output,
580                                      SDVO_CMD_SET_OUTPUT_TIMINGS_PART1, dtd);
581 }
582
583 static bool
584 intel_sdvo_create_preferred_input_timing(struct intel_output *output,
585                                          uint16_t clock,
586                                          uint16_t width,
587                                          uint16_t height)
588 {
589         struct intel_sdvo_preferred_input_timing_args args;
590         uint8_t status;
591
592         memset(&args, 0, sizeof(args));
593         args.clock = clock;
594         args.width = width;
595         args.height = height;
596         args.interlace = 0;
597         args.scaled = 0;
598         intel_sdvo_write_cmd(output, SDVO_CMD_CREATE_PREFERRED_INPUT_TIMING,
599                              &args, sizeof(args));
600         status = intel_sdvo_read_response(output, NULL, 0);
601         if (status != SDVO_CMD_STATUS_SUCCESS)
602                 return false;
603
604         return true;
605 }
606
607 static bool intel_sdvo_get_preferred_input_timing(struct intel_output *output,
608                                                   struct intel_sdvo_dtd *dtd)
609 {
610         bool status;
611
612         intel_sdvo_write_cmd(output, SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART1,
613                              NULL, 0);
614
615         status = intel_sdvo_read_response(output, &dtd->part1,
616                                           sizeof(dtd->part1));
617         if (status != SDVO_CMD_STATUS_SUCCESS)
618                 return false;
619
620         intel_sdvo_write_cmd(output, SDVO_CMD_GET_PREFERRED_INPUT_TIMING_PART2,
621                              NULL, 0);
622
623         status = intel_sdvo_read_response(output, &dtd->part2,
624                                           sizeof(dtd->part2));
625         if (status != SDVO_CMD_STATUS_SUCCESS)
626                 return false;
627
628         return false;
629 }
630
631 static int intel_sdvo_get_clock_rate_mult(struct intel_output *intel_output)
632 {
633         u8 response, status;
634
635         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_CLOCK_RATE_MULT, NULL, 0);
636         status = intel_sdvo_read_response(intel_output, &response, 1);
637
638         if (status != SDVO_CMD_STATUS_SUCCESS) {
639                 DRM_DEBUG("Couldn't get SDVO clock rate multiplier\n");
640                 return SDVO_CLOCK_RATE_MULT_1X;
641         } else {
642                 DRM_DEBUG("Current clock rate multiplier: %d\n", response);
643         }
644
645         return response;
646 }
647
648 static bool intel_sdvo_set_clock_rate_mult(struct intel_output *intel_output, u8 val)
649 {
650         u8 status;
651
652         intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_CLOCK_RATE_MULT, &val, 1);
653         status = intel_sdvo_read_response(intel_output, NULL, 0);
654         if (status != SDVO_CMD_STATUS_SUCCESS)
655                 return false;
656
657         return true;
658 }
659
660 static void intel_sdvo_get_dtd_from_mode(struct intel_sdvo_dtd *dtd,
661                                          struct drm_display_mode *mode)
662 {
663         uint16_t width, height;
664         uint16_t h_blank_len, h_sync_len, v_blank_len, v_sync_len;
665         uint16_t h_sync_offset, v_sync_offset;
666
667         width = mode->crtc_hdisplay;
668         height = mode->crtc_vdisplay;
669
670         /* do some mode translations */
671         h_blank_len = mode->crtc_hblank_end - mode->crtc_hblank_start;
672         h_sync_len = mode->crtc_hsync_end - mode->crtc_hsync_start;
673
674         v_blank_len = mode->crtc_vblank_end - mode->crtc_vblank_start;
675         v_sync_len = mode->crtc_vsync_end - mode->crtc_vsync_start;
676
677         h_sync_offset = mode->crtc_hsync_start - mode->crtc_hblank_start;
678         v_sync_offset = mode->crtc_vsync_start - mode->crtc_vblank_start;
679
680         dtd->part1.clock = mode->clock / 10;
681         dtd->part1.h_active = width & 0xff;
682         dtd->part1.h_blank = h_blank_len & 0xff;
683         dtd->part1.h_high = (((width >> 8) & 0xf) << 4) |
684                 ((h_blank_len >> 8) & 0xf);
685         dtd->part1.v_active = height & 0xff;
686         dtd->part1.v_blank = v_blank_len & 0xff;
687         dtd->part1.v_high = (((height >> 8) & 0xf) << 4) |
688                 ((v_blank_len >> 8) & 0xf);
689
690         dtd->part2.h_sync_off = h_sync_offset & 0xff;
691         dtd->part2.h_sync_width = h_sync_len & 0xff;
692         dtd->part2.v_sync_off_width = (v_sync_offset & 0xf) << 4 |
693                 (v_sync_len & 0xf);
694         dtd->part2.sync_off_width_high = ((h_sync_offset & 0x300) >> 2) |
695                 ((h_sync_len & 0x300) >> 4) | ((v_sync_offset & 0x30) >> 2) |
696                 ((v_sync_len & 0x30) >> 4);
697
698         dtd->part2.dtd_flags = 0x18;
699         if (mode->flags & DRM_MODE_FLAG_PHSYNC)
700                 dtd->part2.dtd_flags |= 0x2;
701         if (mode->flags & DRM_MODE_FLAG_PVSYNC)
702                 dtd->part2.dtd_flags |= 0x4;
703
704         dtd->part2.sdvo_flags = 0;
705         dtd->part2.v_sync_off_high = v_sync_offset & 0xc0;
706         dtd->part2.reserved = 0;
707 }
708
709 static void intel_sdvo_get_mode_from_dtd(struct drm_display_mode * mode,
710                                          struct intel_sdvo_dtd *dtd)
711 {
712         mode->hdisplay = dtd->part1.h_active;
713         mode->hdisplay += ((dtd->part1.h_high >> 4) & 0x0f) << 8;
714         mode->hsync_start = mode->hdisplay + dtd->part2.h_sync_off;
715         mode->hsync_start += (dtd->part2.sync_off_width_high & 0xc0) << 2;
716         mode->hsync_end = mode->hsync_start + dtd->part2.h_sync_width;
717         mode->hsync_end += (dtd->part2.sync_off_width_high & 0x30) << 4;
718         mode->htotal = mode->hdisplay + dtd->part1.h_blank;
719         mode->htotal += (dtd->part1.h_high & 0xf) << 8;
720
721         mode->vdisplay = dtd->part1.v_active;
722         mode->vdisplay += ((dtd->part1.v_high >> 4) & 0x0f) << 8;
723         mode->vsync_start = mode->vdisplay;
724         mode->vsync_start += (dtd->part2.v_sync_off_width >> 4) & 0xf;
725         mode->vsync_start += (dtd->part2.sync_off_width_high & 0x0c) << 2;
726         mode->vsync_start += dtd->part2.v_sync_off_high & 0xc0;
727         mode->vsync_end = mode->vsync_start +
728                 (dtd->part2.v_sync_off_width & 0xf);
729         mode->vsync_end += (dtd->part2.sync_off_width_high & 0x3) << 4;
730         mode->vtotal = mode->vdisplay + dtd->part1.v_blank;
731         mode->vtotal += (dtd->part1.v_high & 0xf) << 8;
732
733         mode->clock = dtd->part1.clock * 10;
734
735         mode->flags &= ~(DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC);
736         if (dtd->part2.dtd_flags & 0x2)
737                 mode->flags |= DRM_MODE_FLAG_PHSYNC;
738         if (dtd->part2.dtd_flags & 0x4)
739                 mode->flags |= DRM_MODE_FLAG_PVSYNC;
740 }
741
742 static bool intel_sdvo_get_supp_encode(struct intel_output *output,
743                                        struct intel_sdvo_encode *encode)
744 {
745         uint8_t status;
746
747         intel_sdvo_write_cmd(output, SDVO_CMD_GET_SUPP_ENCODE, NULL, 0);
748         status = intel_sdvo_read_response(output, encode, sizeof(*encode));
749         if (status != SDVO_CMD_STATUS_SUCCESS) { /* non-support means DVI */
750                 memset(encode, 0, sizeof(*encode));
751                 return false;
752         }
753
754         return true;
755 }
756
757 static bool intel_sdvo_set_encode(struct intel_output *output, uint8_t mode)
758 {
759         uint8_t status;
760
761         intel_sdvo_write_cmd(output, SDVO_CMD_SET_ENCODE, &mode, 1);
762         status = intel_sdvo_read_response(output, NULL, 0);
763
764         return (status == SDVO_CMD_STATUS_SUCCESS);
765 }
766
767 static bool intel_sdvo_set_colorimetry(struct intel_output *output,
768                                        uint8_t mode)
769 {
770         uint8_t status;
771
772         intel_sdvo_write_cmd(output, SDVO_CMD_SET_COLORIMETRY, &mode, 1);
773         status = intel_sdvo_read_response(output, NULL, 0);
774
775         return (status == SDVO_CMD_STATUS_SUCCESS);
776 }
777
778 #if 0
779 static void intel_sdvo_dump_hdmi_buf(struct intel_output *output)
780 {
781         int i, j;
782         uint8_t set_buf_index[2];
783         uint8_t av_split;
784         uint8_t buf_size;
785         uint8_t buf[48];
786         uint8_t *pos;
787
788         intel_sdvo_write_cmd(output, SDVO_CMD_GET_HBUF_AV_SPLIT, NULL, 0);
789         intel_sdvo_read_response(output, &av_split, 1);
790
791         for (i = 0; i <= av_split; i++) {
792                 set_buf_index[0] = i; set_buf_index[1] = 0;
793                 intel_sdvo_write_cmd(output, SDVO_CMD_SET_HBUF_INDEX,
794                                      set_buf_index, 2);
795                 intel_sdvo_write_cmd(output, SDVO_CMD_GET_HBUF_INFO, NULL, 0);
796                 intel_sdvo_read_response(output, &buf_size, 1);
797
798                 pos = buf;
799                 for (j = 0; j <= buf_size; j += 8) {
800                         intel_sdvo_write_cmd(output, SDVO_CMD_GET_HBUF_DATA,
801                                              NULL, 0);
802                         intel_sdvo_read_response(output, pos, 8);
803                         pos += 8;
804                 }
805         }
806 }
807 #endif
808
809 static void intel_sdvo_set_hdmi_buf(struct intel_output *output, int index,
810                                 uint8_t *data, int8_t size, uint8_t tx_rate)
811 {
812     uint8_t set_buf_index[2];
813
814     set_buf_index[0] = index;
815     set_buf_index[1] = 0;
816
817     intel_sdvo_write_cmd(output, SDVO_CMD_SET_HBUF_INDEX, set_buf_index, 2);
818
819     for (; size > 0; size -= 8) {
820         intel_sdvo_write_cmd(output, SDVO_CMD_SET_HBUF_DATA, data, 8);
821         data += 8;
822     }
823
824     intel_sdvo_write_cmd(output, SDVO_CMD_SET_HBUF_TXRATE, &tx_rate, 1);
825 }
826
827 static uint8_t intel_sdvo_calc_hbuf_csum(uint8_t *data, uint8_t size)
828 {
829         uint8_t csum = 0;
830         int i;
831
832         for (i = 0; i < size; i++)
833                 csum += data[i];
834
835         return 0x100 - csum;
836 }
837
838 #define DIP_TYPE_AVI    0x82
839 #define DIP_VERSION_AVI 0x2
840 #define DIP_LEN_AVI     13
841
842 struct dip_infoframe {
843         uint8_t type;
844         uint8_t version;
845         uint8_t len;
846         uint8_t checksum;
847         union {
848                 struct {
849                         /* Packet Byte #1 */
850                         uint8_t S:2;
851                         uint8_t B:2;
852                         uint8_t A:1;
853                         uint8_t Y:2;
854                         uint8_t rsvd1:1;
855                         /* Packet Byte #2 */
856                         uint8_t R:4;
857                         uint8_t M:2;
858                         uint8_t C:2;
859                         /* Packet Byte #3 */
860                         uint8_t SC:2;
861                         uint8_t Q:2;
862                         uint8_t EC:3;
863                         uint8_t ITC:1;
864                         /* Packet Byte #4 */
865                         uint8_t VIC:7;
866                         uint8_t rsvd2:1;
867                         /* Packet Byte #5 */
868                         uint8_t PR:4;
869                         uint8_t rsvd3:4;
870                         /* Packet Byte #6~13 */
871                         uint16_t top_bar_end;
872                         uint16_t bottom_bar_start;
873                         uint16_t left_bar_end;
874                         uint16_t right_bar_start;
875                 } avi;
876                 struct {
877                         /* Packet Byte #1 */
878                         uint8_t channel_count:3;
879                         uint8_t rsvd1:1;
880                         uint8_t coding_type:4;
881                         /* Packet Byte #2 */
882                         uint8_t sample_size:2; /* SS0, SS1 */
883                         uint8_t sample_frequency:3;
884                         uint8_t rsvd2:3;
885                         /* Packet Byte #3 */
886                         uint8_t coding_type_private:5;
887                         uint8_t rsvd3:3;
888                         /* Packet Byte #4 */
889                         uint8_t channel_allocation;
890                         /* Packet Byte #5 */
891                         uint8_t rsvd4:3;
892                         uint8_t level_shift:4;
893                         uint8_t downmix_inhibit:1;
894                 } audio;
895                 uint8_t payload[28];
896         } __attribute__ ((packed)) u;
897 } __attribute__((packed));
898
899 static void intel_sdvo_set_avi_infoframe(struct intel_output *output,
900                                          struct drm_display_mode * mode)
901 {
902         struct dip_infoframe avi_if = {
903                 .type = DIP_TYPE_AVI,
904                 .version = DIP_VERSION_AVI,
905                 .len = DIP_LEN_AVI,
906         };
907
908         avi_if.checksum = intel_sdvo_calc_hbuf_csum((uint8_t *)&avi_if,
909                                                     4 + avi_if.len);
910         intel_sdvo_set_hdmi_buf(output, 1, (uint8_t *)&avi_if, 4 + avi_if.len,
911                                 SDVO_HBUF_TX_VSYNC);
912 }
913
914 static void intel_sdvo_set_tv_format(struct intel_output *output)
915 {
916         struct intel_sdvo_priv *sdvo_priv = output->dev_priv;
917         struct intel_sdvo_tv_format *format, unset;
918         u8 status;
919
920         format = &sdvo_priv->tv_format;
921         memset(&unset, 0, sizeof(unset));
922         if (memcmp(format, &unset, sizeof(*format))) {
923                 DRM_DEBUG("%s: Choosing default TV format of NTSC-M\n",
924                                 SDVO_NAME(sdvo_priv));
925                 format->ntsc_m = 1;
926                 intel_sdvo_write_cmd(output, SDVO_CMD_SET_TV_FORMAT, format,
927                                 sizeof(*format));
928                 status = intel_sdvo_read_response(output, NULL, 0);
929                 if (status != SDVO_CMD_STATUS_SUCCESS)
930                         DRM_DEBUG("%s: Failed to set TV format\n",
931                                         SDVO_NAME(sdvo_priv));
932         }
933 }
934
935 static bool intel_sdvo_mode_fixup(struct drm_encoder *encoder,
936                                   struct drm_display_mode *mode,
937                                   struct drm_display_mode *adjusted_mode)
938 {
939         struct intel_output *output = enc_to_intel_output(encoder);
940         struct intel_sdvo_priv *dev_priv = output->dev_priv;
941
942         if (!dev_priv->is_tv) {
943                 /* Make the CRTC code factor in the SDVO pixel multiplier.  The
944                  * SDVO device will be told of the multiplier during mode_set.
945                  */
946                 adjusted_mode->clock *= intel_sdvo_get_pixel_multiplier(mode);
947         } else {
948                 struct intel_sdvo_dtd output_dtd;
949                 bool success;
950
951                 /* We need to construct preferred input timings based on our
952                  * output timings.  To do that, we have to set the output
953                  * timings, even though this isn't really the right place in
954                  * the sequence to do it. Oh well.
955                  */
956
957
958                 /* Set output timings */
959                 intel_sdvo_get_dtd_from_mode(&output_dtd, mode);
960                 intel_sdvo_set_target_output(output,
961                                              dev_priv->controlled_output);
962                 intel_sdvo_set_output_timing(output, &output_dtd);
963
964                 /* Set the input timing to the screen. Assume always input 0. */
965                 intel_sdvo_set_target_input(output, true, false);
966
967
968                 success = intel_sdvo_create_preferred_input_timing(output,
969                                                                    mode->clock / 10,
970                                                                    mode->hdisplay,
971                                                                    mode->vdisplay);
972                 if (success) {
973                         struct intel_sdvo_dtd input_dtd;
974
975                         intel_sdvo_get_preferred_input_timing(output,
976                                                              &input_dtd);
977                         intel_sdvo_get_mode_from_dtd(adjusted_mode, &input_dtd);
978
979                         drm_mode_set_crtcinfo(adjusted_mode, 0);
980
981                         mode->clock = adjusted_mode->clock;
982
983                         adjusted_mode->clock *=
984                                 intel_sdvo_get_pixel_multiplier(mode);
985                 } else {
986                         return false;
987                 }
988         }
989         return true;
990 }
991
992 static void intel_sdvo_mode_set(struct drm_encoder *encoder,
993                                 struct drm_display_mode *mode,
994                                 struct drm_display_mode *adjusted_mode)
995 {
996         struct drm_device *dev = encoder->dev;
997         struct drm_i915_private *dev_priv = dev->dev_private;
998         struct drm_crtc *crtc = encoder->crtc;
999         struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1000         struct intel_output *output = enc_to_intel_output(encoder);
1001         struct intel_sdvo_priv *sdvo_priv = output->dev_priv;
1002         u32 sdvox = 0;
1003         int sdvo_pixel_multiply;
1004         struct intel_sdvo_in_out_map in_out;
1005         struct intel_sdvo_dtd input_dtd;
1006         u8 status;
1007
1008         if (!mode)
1009                 return;
1010
1011         /* First, set the input mapping for the first input to our controlled
1012          * output. This is only correct if we're a single-input device, in
1013          * which case the first input is the output from the appropriate SDVO
1014          * channel on the motherboard.  In a two-input device, the first input
1015          * will be SDVOB and the second SDVOC.
1016          */
1017         in_out.in0 = sdvo_priv->controlled_output;
1018         in_out.in1 = 0;
1019
1020         intel_sdvo_write_cmd(output, SDVO_CMD_SET_IN_OUT_MAP,
1021                              &in_out, sizeof(in_out));
1022         status = intel_sdvo_read_response(output, NULL, 0);
1023
1024         if (sdvo_priv->is_hdmi) {
1025                 intel_sdvo_set_avi_infoframe(output, mode);
1026                 sdvox |= SDVO_AUDIO_ENABLE;
1027         }
1028
1029         /* We have tried to get input timing in mode_fixup, and filled into
1030            adjusted_mode */
1031         if (sdvo_priv->is_tv)
1032                 intel_sdvo_get_dtd_from_mode(&input_dtd, adjusted_mode);
1033         else
1034                 intel_sdvo_get_dtd_from_mode(&input_dtd, mode);
1035
1036         /* If it's a TV, we already set the output timing in mode_fixup.
1037          * Otherwise, the output timing is equal to the input timing.
1038          */
1039         if (!sdvo_priv->is_tv) {
1040                 /* Set the output timing to the screen */
1041                 intel_sdvo_set_target_output(output,
1042                                              sdvo_priv->controlled_output);
1043                 intel_sdvo_set_output_timing(output, &input_dtd);
1044         }
1045
1046         /* Set the input timing to the screen. Assume always input 0. */
1047         intel_sdvo_set_target_input(output, true, false);
1048
1049         if (sdvo_priv->is_tv)
1050                 intel_sdvo_set_tv_format(output);
1051
1052         /* We would like to use intel_sdvo_create_preferred_input_timing() to
1053          * provide the device with a timing it can support, if it supports that
1054          * feature.  However, presumably we would need to adjust the CRTC to
1055          * output the preferred timing, and we don't support that currently.
1056          */
1057 #if 0
1058         success = intel_sdvo_create_preferred_input_timing(output, clock,
1059                                                            width, height);
1060         if (success) {
1061                 struct intel_sdvo_dtd *input_dtd;
1062
1063                 intel_sdvo_get_preferred_input_timing(output, &input_dtd);
1064                 intel_sdvo_set_input_timing(output, &input_dtd);
1065         }
1066 #else
1067         intel_sdvo_set_input_timing(output, &input_dtd);
1068 #endif
1069
1070         switch (intel_sdvo_get_pixel_multiplier(mode)) {
1071         case 1:
1072                 intel_sdvo_set_clock_rate_mult(output,
1073                                                SDVO_CLOCK_RATE_MULT_1X);
1074                 break;
1075         case 2:
1076                 intel_sdvo_set_clock_rate_mult(output,
1077                                                SDVO_CLOCK_RATE_MULT_2X);
1078                 break;
1079         case 4:
1080                 intel_sdvo_set_clock_rate_mult(output,
1081                                                SDVO_CLOCK_RATE_MULT_4X);
1082                 break;
1083         }
1084
1085         /* Set the SDVO control regs. */
1086         if (IS_I965G(dev)) {
1087                 sdvox |= SDVO_BORDER_ENABLE |
1088                         SDVO_VSYNC_ACTIVE_HIGH |
1089                         SDVO_HSYNC_ACTIVE_HIGH;
1090         } else {
1091                 sdvox |= I915_READ(sdvo_priv->output_device);
1092                 switch (sdvo_priv->output_device) {
1093                 case SDVOB:
1094                         sdvox &= SDVOB_PRESERVE_MASK;
1095                         break;
1096                 case SDVOC:
1097                         sdvox &= SDVOC_PRESERVE_MASK;
1098                         break;
1099                 }
1100                 sdvox |= (9 << 19) | SDVO_BORDER_ENABLE;
1101         }
1102         if (intel_crtc->pipe == 1)
1103                 sdvox |= SDVO_PIPE_B_SELECT;
1104
1105         sdvo_pixel_multiply = intel_sdvo_get_pixel_multiplier(mode);
1106         if (IS_I965G(dev)) {
1107                 /* done in crtc_mode_set as the dpll_md reg must be written early */
1108         } else if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
1109                 /* done in crtc_mode_set as it lives inside the dpll register */
1110         } else {
1111                 sdvox |= (sdvo_pixel_multiply - 1) << SDVO_PORT_MULTIPLY_SHIFT;
1112         }
1113
1114         intel_sdvo_write_sdvox(output, sdvox);
1115 }
1116
1117 static void intel_sdvo_dpms(struct drm_encoder *encoder, int mode)
1118 {
1119         struct drm_device *dev = encoder->dev;
1120         struct drm_i915_private *dev_priv = dev->dev_private;
1121         struct intel_output *intel_output = enc_to_intel_output(encoder);
1122         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
1123         u32 temp;
1124
1125         if (mode != DRM_MODE_DPMS_ON) {
1126                 intel_sdvo_set_active_outputs(intel_output, 0);
1127                 if (0)
1128                         intel_sdvo_set_encoder_power_state(intel_output, mode);
1129
1130                 if (mode == DRM_MODE_DPMS_OFF) {
1131                         temp = I915_READ(sdvo_priv->output_device);
1132                         if ((temp & SDVO_ENABLE) != 0) {
1133                                 intel_sdvo_write_sdvox(intel_output, temp & ~SDVO_ENABLE);
1134                         }
1135                 }
1136         } else {
1137                 bool input1, input2;
1138                 int i;
1139                 u8 status;
1140
1141                 temp = I915_READ(sdvo_priv->output_device);
1142                 if ((temp & SDVO_ENABLE) == 0)
1143                         intel_sdvo_write_sdvox(intel_output, temp | SDVO_ENABLE);
1144                 for (i = 0; i < 2; i++)
1145                   intel_wait_for_vblank(dev);
1146
1147                 status = intel_sdvo_get_trained_inputs(intel_output, &input1,
1148                                                        &input2);
1149
1150
1151                 /* Warn if the device reported failure to sync.
1152                  * A lot of SDVO devices fail to notify of sync, but it's
1153                  * a given it the status is a success, we succeeded.
1154                  */
1155                 if (status == SDVO_CMD_STATUS_SUCCESS && !input1) {
1156                         DRM_DEBUG("First %s output reported failure to sync\n",
1157                                    SDVO_NAME(sdvo_priv));
1158                 }
1159
1160                 if (0)
1161                         intel_sdvo_set_encoder_power_state(intel_output, mode);
1162                 intel_sdvo_set_active_outputs(intel_output, sdvo_priv->controlled_output);
1163         }
1164         return;
1165 }
1166
1167 static void intel_sdvo_save(struct drm_connector *connector)
1168 {
1169         struct drm_device *dev = connector->dev;
1170         struct drm_i915_private *dev_priv = dev->dev_private;
1171         struct intel_output *intel_output = to_intel_output(connector);
1172         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
1173         int o;
1174
1175         sdvo_priv->save_sdvo_mult = intel_sdvo_get_clock_rate_mult(intel_output);
1176         intel_sdvo_get_active_outputs(intel_output, &sdvo_priv->save_active_outputs);
1177
1178         if (sdvo_priv->caps.sdvo_inputs_mask & 0x1) {
1179                 intel_sdvo_set_target_input(intel_output, true, false);
1180                 intel_sdvo_get_input_timing(intel_output,
1181                                             &sdvo_priv->save_input_dtd_1);
1182         }
1183
1184         if (sdvo_priv->caps.sdvo_inputs_mask & 0x2) {
1185                 intel_sdvo_set_target_input(intel_output, false, true);
1186                 intel_sdvo_get_input_timing(intel_output,
1187                                             &sdvo_priv->save_input_dtd_2);
1188         }
1189
1190         for (o = SDVO_OUTPUT_FIRST; o <= SDVO_OUTPUT_LAST; o++)
1191         {
1192                 u16  this_output = (1 << o);
1193                 if (sdvo_priv->caps.output_flags & this_output)
1194                 {
1195                         intel_sdvo_set_target_output(intel_output, this_output);
1196                         intel_sdvo_get_output_timing(intel_output,
1197                                                      &sdvo_priv->save_output_dtd[o]);
1198                 }
1199         }
1200         if (sdvo_priv->is_tv) {
1201                 /* XXX: Save TV format/enhancements. */
1202         }
1203
1204         sdvo_priv->save_SDVOX = I915_READ(sdvo_priv->output_device);
1205 }
1206
1207 static void intel_sdvo_restore(struct drm_connector *connector)
1208 {
1209         struct drm_device *dev = connector->dev;
1210         struct intel_output *intel_output = to_intel_output(connector);
1211         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
1212         int o;
1213         int i;
1214         bool input1, input2;
1215         u8 status;
1216
1217         intel_sdvo_set_active_outputs(intel_output, 0);
1218
1219         for (o = SDVO_OUTPUT_FIRST; o <= SDVO_OUTPUT_LAST; o++)
1220         {
1221                 u16  this_output = (1 << o);
1222                 if (sdvo_priv->caps.output_flags & this_output) {
1223                         intel_sdvo_set_target_output(intel_output, this_output);
1224                         intel_sdvo_set_output_timing(intel_output, &sdvo_priv->save_output_dtd[o]);
1225                 }
1226         }
1227
1228         if (sdvo_priv->caps.sdvo_inputs_mask & 0x1) {
1229                 intel_sdvo_set_target_input(intel_output, true, false);
1230                 intel_sdvo_set_input_timing(intel_output, &sdvo_priv->save_input_dtd_1);
1231         }
1232
1233         if (sdvo_priv->caps.sdvo_inputs_mask & 0x2) {
1234                 intel_sdvo_set_target_input(intel_output, false, true);
1235                 intel_sdvo_set_input_timing(intel_output, &sdvo_priv->save_input_dtd_2);
1236         }
1237
1238         intel_sdvo_set_clock_rate_mult(intel_output, sdvo_priv->save_sdvo_mult);
1239
1240         if (sdvo_priv->is_tv) {
1241                 /* XXX: Restore TV format/enhancements. */
1242         }
1243
1244         intel_sdvo_write_sdvox(intel_output, sdvo_priv->save_SDVOX);
1245
1246         if (sdvo_priv->save_SDVOX & SDVO_ENABLE)
1247         {
1248                 for (i = 0; i < 2; i++)
1249                         intel_wait_for_vblank(dev);
1250                 status = intel_sdvo_get_trained_inputs(intel_output, &input1, &input2);
1251                 if (status == SDVO_CMD_STATUS_SUCCESS && !input1)
1252                         DRM_DEBUG("First %s output reported failure to sync\n",
1253                                    SDVO_NAME(sdvo_priv));
1254         }
1255
1256         intel_sdvo_set_active_outputs(intel_output, sdvo_priv->save_active_outputs);
1257 }
1258
1259 static int intel_sdvo_mode_valid(struct drm_connector *connector,
1260                                  struct drm_display_mode *mode)
1261 {
1262         struct intel_output *intel_output = to_intel_output(connector);
1263         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
1264
1265         if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
1266                 return MODE_NO_DBLESCAN;
1267
1268         if (sdvo_priv->pixel_clock_min > mode->clock)
1269                 return MODE_CLOCK_LOW;
1270
1271         if (sdvo_priv->pixel_clock_max < mode->clock)
1272                 return MODE_CLOCK_HIGH;
1273
1274         return MODE_OK;
1275 }
1276
1277 static bool intel_sdvo_get_capabilities(struct intel_output *intel_output, struct intel_sdvo_caps *caps)
1278 {
1279         u8 status;
1280
1281         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_DEVICE_CAPS, NULL, 0);
1282         status = intel_sdvo_read_response(intel_output, caps, sizeof(*caps));
1283         if (status != SDVO_CMD_STATUS_SUCCESS)
1284                 return false;
1285
1286         return true;
1287 }
1288
1289 struct drm_connector* intel_sdvo_find(struct drm_device *dev, int sdvoB)
1290 {
1291         struct drm_connector *connector = NULL;
1292         struct intel_output *iout = NULL;
1293         struct intel_sdvo_priv *sdvo;
1294
1295         /* find the sdvo connector */
1296         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
1297                 iout = to_intel_output(connector);
1298
1299                 if (iout->type != INTEL_OUTPUT_SDVO)
1300                         continue;
1301
1302                 sdvo = iout->dev_priv;
1303
1304                 if (sdvo->output_device == SDVOB && sdvoB)
1305                         return connector;
1306
1307                 if (sdvo->output_device == SDVOC && !sdvoB)
1308                         return connector;
1309
1310         }
1311
1312         return NULL;
1313 }
1314
1315 int intel_sdvo_supports_hotplug(struct drm_connector *connector)
1316 {
1317         u8 response[2];
1318         u8 status;
1319         struct intel_output *intel_output;
1320         DRM_DEBUG("\n");
1321
1322         if (!connector)
1323                 return 0;
1324
1325         intel_output = to_intel_output(connector);
1326
1327         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_HOT_PLUG_SUPPORT, NULL, 0);
1328         status = intel_sdvo_read_response(intel_output, &response, 2);
1329
1330         if (response[0] !=0)
1331                 return 1;
1332
1333         return 0;
1334 }
1335
1336 void intel_sdvo_set_hotplug(struct drm_connector *connector, int on)
1337 {
1338         u8 response[2];
1339         u8 status;
1340         struct intel_output *intel_output = to_intel_output(connector);
1341
1342         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_ACTIVE_HOT_PLUG, NULL, 0);
1343         intel_sdvo_read_response(intel_output, &response, 2);
1344
1345         if (on) {
1346                 intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_HOT_PLUG_SUPPORT, NULL, 0);
1347                 status = intel_sdvo_read_response(intel_output, &response, 2);
1348
1349                 intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_ACTIVE_HOT_PLUG, &response, 2);
1350         } else {
1351                 response[0] = 0;
1352                 response[1] = 0;
1353                 intel_sdvo_write_cmd(intel_output, SDVO_CMD_SET_ACTIVE_HOT_PLUG, &response, 2);
1354         }
1355
1356         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_ACTIVE_HOT_PLUG, NULL, 0);
1357         intel_sdvo_read_response(intel_output, &response, 2);
1358 }
1359
1360 static enum drm_connector_status intel_sdvo_detect(struct drm_connector *connector)
1361 {
1362         u8 response[2];
1363         u8 status;
1364         struct intel_output *intel_output = to_intel_output(connector);
1365
1366         intel_sdvo_write_cmd(intel_output, SDVO_CMD_GET_ATTACHED_DISPLAYS, NULL, 0);
1367         status = intel_sdvo_read_response(intel_output, &response, 2);
1368
1369         DRM_DEBUG("SDVO response %d %d\n", response[0], response[1]);
1370
1371         if (status != SDVO_CMD_STATUS_SUCCESS)
1372                 return connector_status_unknown;
1373
1374         if ((response[0] != 0) || (response[1] != 0))
1375                 return connector_status_connected;
1376         else
1377                 return connector_status_disconnected;
1378 }
1379
1380 static void intel_sdvo_get_ddc_modes(struct drm_connector *connector)
1381 {
1382         struct intel_output *intel_output = to_intel_output(connector);
1383         struct intel_sdvo_priv *sdvo_priv = intel_output->dev_priv;
1384
1385         /* set the bus switch and get the modes */
1386         intel_sdvo_set_control_bus_switch(intel_output, sdvo_priv->ddc_bus);
1387         intel_ddc_get_modes(intel_output);
1388
1389 #if 0
1390         struct drm_device *dev = encoder->dev;
1391         struct drm_i915_private *dev_priv = dev->dev_private;
1392         /* Mac mini hack.  On this device, I get DDC through the analog, which
1393          * load-detects as disconnected.  I fail to DDC through the SDVO DDC,
1394          * but it does load-detect as connected.  So, just steal the DDC bits
1395          * from analog when we fail at finding it the right way.
1396          */
1397         crt = xf86_config->output[0];
1398         intel_output = crt->driver_private;
1399         if (intel_output->type == I830_OUTPUT_ANALOG &&
1400             crt->funcs->detect(crt) == XF86OutputStatusDisconnected) {
1401                 I830I2CInit(pScrn, &intel_output->pDDCBus, GPIOA, "CRTDDC_A");
1402                 edid_mon = xf86OutputGetEDID(crt, intel_output->pDDCBus);
1403                 xf86DestroyI2CBusRec(intel_output->pDDCBus, true, true);
1404         }
1405         if (edid_mon) {
1406                 xf86OutputSetEDID(output, edid_mon);
1407                 modes = xf86OutputGetEDIDModes(output);
1408         }
1409 #endif
1410 }
1411
1412 /**
1413  * This function checks the current TV format, and chooses a default if
1414  * it hasn't been set.
1415  */
1416 static void
1417 intel_sdvo_check_tv_format(struct intel_output *output)
1418 {
1419         struct intel_sdvo_priv *dev_priv = output->dev_priv;
1420         struct intel_sdvo_tv_format format;
1421         uint8_t status;
1422
1423         intel_sdvo_write_cmd(output, SDVO_CMD_GET_TV_FORMAT, NULL, 0);
1424         status = intel_sdvo_read_response(output, &format, sizeof(format));
1425         if (status != SDVO_CMD_STATUS_SUCCESS)
1426                 return;
1427
1428         memcpy(&dev_priv->tv_format, &format, sizeof(format));
1429 }
1430
1431 /*
1432  * Set of SDVO TV modes.
1433  * Note!  This is in reply order (see loop in get_tv_modes).
1434  * XXX: all 60Hz refresh?
1435  */
1436 struct drm_display_mode sdvo_tv_modes[] = {
1437         { DRM_MODE("320x200", DRM_MODE_TYPE_DRIVER, 5815, 320, 321, 384,
1438                    416, 0, 200, 201, 232, 233, 0,
1439                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1440         { DRM_MODE("320x240", DRM_MODE_TYPE_DRIVER, 6814, 320, 321, 384,
1441                    416, 0, 240, 241, 272, 273, 0,
1442                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1443         { DRM_MODE("400x300", DRM_MODE_TYPE_DRIVER, 9910, 400, 401, 464,
1444                    496, 0, 300, 301, 332, 333, 0,
1445                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1446         { DRM_MODE("640x350", DRM_MODE_TYPE_DRIVER, 16913, 640, 641, 704,
1447                    736, 0, 350, 351, 382, 383, 0,
1448                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1449         { DRM_MODE("640x400", DRM_MODE_TYPE_DRIVER, 19121, 640, 641, 704,
1450                    736, 0, 400, 401, 432, 433, 0,
1451                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1452         { DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 22654, 640, 641, 704,
1453                    736, 0, 480, 481, 512, 513, 0,
1454                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1455         { DRM_MODE("704x480", DRM_MODE_TYPE_DRIVER, 24624, 704, 705, 768,
1456                    800, 0, 480, 481, 512, 513, 0,
1457                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1458         { DRM_MODE("704x576", DRM_MODE_TYPE_DRIVER, 29232, 704, 705, 768,
1459                    800, 0, 576, 577, 608, 609, 0,
1460                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1461         { DRM_MODE("720x350", DRM_MODE_TYPE_DRIVER, 18751, 720, 721, 784,
1462                    816, 0, 350, 351, 382, 383, 0,
1463                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1464         { DRM_MODE("720x400", DRM_MODE_TYPE_DRIVER, 21199, 720, 721, 784,
1465                    816, 0, 400, 401, 432, 433, 0,
1466                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1467         { DRM_MODE("720x480", DRM_MODE_TYPE_DRIVER, 25116, 720, 721, 784,
1468                    816, 0, 480, 481, 512, 513, 0,
1469                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1470         { DRM_MODE("720x540", DRM_MODE_TYPE_DRIVER, 28054, 720, 721, 784,
1471                    816, 0, 540, 541, 572, 573, 0,
1472                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1473         { DRM_MODE("720x576", DRM_MODE_TYPE_DRIVER, 29816, 720, 721, 784,
1474                    816, 0, 576, 577, 608, 609, 0,
1475                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1476         { DRM_MODE("768x576", DRM_MODE_TYPE_DRIVER, 31570, 768, 769, 832,
1477                    864, 0, 576, 577, 608, 609, 0,
1478                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1479         { DRM_MODE("800x600", DRM_MODE_TYPE_DRIVER, 34030, 800, 801, 864,
1480                    896, 0, 600, 601, 632, 633, 0,
1481                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1482         { DRM_MODE("832x624", DRM_MODE_TYPE_DRIVER, 36581, 832, 833, 896,
1483                    928, 0, 624, 625, 656, 657, 0,
1484                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1485         { DRM_MODE("920x766", DRM_MODE_TYPE_DRIVER, 48707, 920, 921, 984,
1486                    1016, 0, 766, 767, 798, 799, 0,
1487                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1488         { DRM_MODE("1024x768", DRM_MODE_TYPE_DRIVER, 53827, 1024, 1025, 1088,
1489                    1120, 0, 768, 769, 800, 801, 0,
1490                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1491         { DRM_MODE("1280x1024", DRM_MODE_TYPE_DRIVER, 87265, 1280, 1281, 1344,
1492                    1376, 0, 1024, 1025, 1056, 1057, 0,
1493                    DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_PVSYNC) },
1494 };
1495
1496 static void intel_sdvo_get_tv_modes(struct drm_connector *connector)
1497 {
1498         struct intel_output *output = to_intel_output(connector);
1499         struct intel_sdvo_priv *sdvo_priv = output->dev_priv;
1500         struct intel_sdvo_sdtv_resolution_request tv_res;
1501         uint32_t reply = 0;
1502         uint8_t status;
1503         int i = 0;
1504
1505         intel_sdvo_check_tv_format(output);
1506
1507         /* Read the list of supported input resolutions for the selected TV
1508          * format.
1509          */
1510         memset(&tv_res, 0, sizeof(tv_res));
1511         memcpy(&tv_res, &sdvo_priv->tv_format, sizeof(tv_res));
1512         intel_sdvo_write_cmd(output, SDVO_CMD_GET_SDTV_RESOLUTION_SUPPORT,
1513                              &tv_res, sizeof(tv_res));
1514         status = intel_sdvo_read_response(output, &reply, 3);
1515         if (status != SDVO_CMD_STATUS_SUCCESS)
1516                 return;
1517
1518         for (i = 0; i < ARRAY_SIZE(sdvo_tv_modes); i++)
1519                 if (reply & (1 << i)) {
1520                         struct drm_display_mode *nmode;
1521                         nmode = drm_mode_duplicate(connector->dev,
1522                                         &sdvo_tv_modes[i]);
1523                         if (nmode)
1524                                 drm_mode_probed_add(connector, nmode);
1525                 }
1526 }
1527
1528 static int intel_sdvo_get_modes(struct drm_connector *connector)
1529 {
1530         struct intel_output *output = to_intel_output(connector);
1531         struct intel_sdvo_priv *sdvo_priv = output->dev_priv;
1532
1533         if (sdvo_priv->is_tv)
1534                 intel_sdvo_get_tv_modes(connector);
1535         else
1536                 intel_sdvo_get_ddc_modes(connector);
1537
1538         if (list_empty(&connector->probed_modes))
1539                 return 0;
1540         return 1;
1541 }
1542
1543 static void intel_sdvo_destroy(struct drm_connector *connector)
1544 {
1545         struct intel_output *intel_output = to_intel_output(connector);
1546
1547         if (intel_output->i2c_bus)
1548                 intel_i2c_destroy(intel_output->i2c_bus);
1549         drm_sysfs_connector_remove(connector);
1550         drm_connector_cleanup(connector);
1551         kfree(intel_output);
1552 }
1553
1554 static const struct drm_encoder_helper_funcs intel_sdvo_helper_funcs = {
1555         .dpms = intel_sdvo_dpms,
1556         .mode_fixup = intel_sdvo_mode_fixup,
1557         .prepare = intel_encoder_prepare,
1558         .mode_set = intel_sdvo_mode_set,
1559         .commit = intel_encoder_commit,
1560 };
1561
1562 static const struct drm_connector_funcs intel_sdvo_connector_funcs = {
1563         .save = intel_sdvo_save,
1564         .restore = intel_sdvo_restore,
1565         .detect = intel_sdvo_detect,
1566         .fill_modes = drm_helper_probe_single_connector_modes,
1567         .destroy = intel_sdvo_destroy,
1568 };
1569
1570 static const struct drm_connector_helper_funcs intel_sdvo_connector_helper_funcs = {
1571         .get_modes = intel_sdvo_get_modes,
1572         .mode_valid = intel_sdvo_mode_valid,
1573         .best_encoder = intel_best_encoder,
1574 };
1575
1576 static void intel_sdvo_enc_destroy(struct drm_encoder *encoder)
1577 {
1578         drm_encoder_cleanup(encoder);
1579 }
1580
1581 static const struct drm_encoder_funcs intel_sdvo_enc_funcs = {
1582         .destroy = intel_sdvo_enc_destroy,
1583 };
1584
1585
1586 /**
1587  * Choose the appropriate DDC bus for control bus switch command for this
1588  * SDVO output based on the controlled output.
1589  *
1590  * DDC bus number assignment is in a priority order of RGB outputs, then TMDS
1591  * outputs, then LVDS outputs.
1592  */
1593 static void
1594 intel_sdvo_select_ddc_bus(struct intel_sdvo_priv *dev_priv)
1595 {
1596         uint16_t mask = 0;
1597         unsigned int num_bits;
1598
1599         /* Make a mask of outputs less than or equal to our own priority in the
1600          * list.
1601          */
1602         switch (dev_priv->controlled_output) {
1603         case SDVO_OUTPUT_LVDS1:
1604                 mask |= SDVO_OUTPUT_LVDS1;
1605         case SDVO_OUTPUT_LVDS0:
1606                 mask |= SDVO_OUTPUT_LVDS0;
1607         case SDVO_OUTPUT_TMDS1:
1608                 mask |= SDVO_OUTPUT_TMDS1;
1609         case SDVO_OUTPUT_TMDS0:
1610                 mask |= SDVO_OUTPUT_TMDS0;
1611         case SDVO_OUTPUT_RGB1:
1612                 mask |= SDVO_OUTPUT_RGB1;
1613         case SDVO_OUTPUT_RGB0:
1614                 mask |= SDVO_OUTPUT_RGB0;
1615                 break;
1616         }
1617
1618         /* Count bits to find what number we are in the priority list. */
1619         mask &= dev_priv->caps.output_flags;
1620         num_bits = hweight16(mask);
1621         if (num_bits > 3) {
1622                 /* if more than 3 outputs, default to DDC bus 3 for now */
1623                 num_bits = 3;
1624         }
1625
1626         /* Corresponds to SDVO_CONTROL_BUS_DDCx */
1627         dev_priv->ddc_bus = 1 << num_bits;
1628 }
1629
1630 static bool
1631 intel_sdvo_get_digital_encoding_mode(struct intel_output *output)
1632 {
1633         struct intel_sdvo_priv *sdvo_priv = output->dev_priv;
1634         uint8_t status;
1635
1636         intel_sdvo_set_target_output(output, sdvo_priv->controlled_output);
1637
1638         intel_sdvo_write_cmd(output, SDVO_CMD_GET_ENCODE, NULL, 0);
1639         status = intel_sdvo_read_response(output, &sdvo_priv->is_hdmi, 1);
1640         if (status != SDVO_CMD_STATUS_SUCCESS)
1641                 return false;
1642         return true;
1643 }
1644
1645 bool intel_sdvo_init(struct drm_device *dev, int output_device)
1646 {
1647         struct drm_connector *connector;
1648         struct intel_output *intel_output;
1649         struct intel_sdvo_priv *sdvo_priv;
1650         struct intel_i2c_chan *i2cbus = NULL;
1651         int connector_type;
1652         u8 ch[0x40];
1653         int i;
1654         int encoder_type, output_id;
1655
1656         intel_output = kcalloc(sizeof(struct intel_output)+sizeof(struct intel_sdvo_priv), 1, GFP_KERNEL);
1657         if (!intel_output) {
1658                 return false;
1659         }
1660
1661         connector = &intel_output->base;
1662
1663         drm_connector_init(dev, connector, &intel_sdvo_connector_funcs,
1664                            DRM_MODE_CONNECTOR_Unknown);
1665         drm_connector_helper_add(connector, &intel_sdvo_connector_helper_funcs);
1666         sdvo_priv = (struct intel_sdvo_priv *)(intel_output + 1);
1667         intel_output->type = INTEL_OUTPUT_SDVO;
1668
1669         connector->interlace_allowed = 0;
1670         connector->doublescan_allowed = 0;
1671
1672         /* setup the DDC bus. */
1673         if (output_device == SDVOB)
1674                 i2cbus = intel_i2c_create(dev, GPIOE, "SDVOCTRL_E for SDVOB");
1675         else
1676                 i2cbus = intel_i2c_create(dev, GPIOE, "SDVOCTRL_E for SDVOC");
1677
1678         if (!i2cbus)
1679                 goto err_connector;
1680
1681         sdvo_priv->i2c_bus = i2cbus;
1682
1683         if (output_device == SDVOB) {
1684                 output_id = 1;
1685                 sdvo_priv->i2c_bus->slave_addr = 0x38;
1686         } else {
1687                 output_id = 2;
1688                 sdvo_priv->i2c_bus->slave_addr = 0x39;
1689         }
1690
1691         sdvo_priv->output_device = output_device;
1692         intel_output->i2c_bus = i2cbus;
1693         intel_output->dev_priv = sdvo_priv;
1694
1695
1696         /* Read the regs to test if we can talk to the device */
1697         for (i = 0; i < 0x40; i++) {
1698                 if (!intel_sdvo_read_byte(intel_output, i, &ch[i])) {
1699                         DRM_DEBUG("No SDVO device found on SDVO%c\n",
1700                                   output_device == SDVOB ? 'B' : 'C');
1701                         goto err_i2c;
1702                 }
1703         }
1704
1705         intel_sdvo_get_capabilities(intel_output, &sdvo_priv->caps);
1706
1707         if (sdvo_priv->caps.output_flags &
1708             (SDVO_OUTPUT_TMDS0 | SDVO_OUTPUT_TMDS1)) {
1709                 if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_TMDS0)
1710                         sdvo_priv->controlled_output = SDVO_OUTPUT_TMDS0;
1711                 else
1712                         sdvo_priv->controlled_output = SDVO_OUTPUT_TMDS1;
1713
1714                 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
1715                 encoder_type = DRM_MODE_ENCODER_TMDS;
1716                 connector_type = DRM_MODE_CONNECTOR_DVID;
1717
1718                 if (intel_sdvo_get_supp_encode(intel_output,
1719                                                &sdvo_priv->encode) &&
1720                     intel_sdvo_get_digital_encoding_mode(intel_output) &&
1721                     sdvo_priv->is_hdmi) {
1722                         /* enable hdmi encoding mode if supported */
1723                         intel_sdvo_set_encode(intel_output, SDVO_ENCODE_HDMI);
1724                         intel_sdvo_set_colorimetry(intel_output,
1725                                                    SDVO_COLORIMETRY_RGB256);
1726                         connector_type = DRM_MODE_CONNECTOR_HDMIA;
1727                 }
1728         }
1729         else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_SVID0)
1730         {
1731                 sdvo_priv->controlled_output = SDVO_OUTPUT_SVID0;
1732                 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
1733                 encoder_type = DRM_MODE_ENCODER_TVDAC;
1734                 connector_type = DRM_MODE_CONNECTOR_SVIDEO;
1735                 sdvo_priv->is_tv = true;
1736                 intel_output->needs_tv_clock = true;
1737         }
1738         else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_RGB0)
1739         {
1740                 sdvo_priv->controlled_output = SDVO_OUTPUT_RGB0;
1741                 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
1742                 encoder_type = DRM_MODE_ENCODER_DAC;
1743                 connector_type = DRM_MODE_CONNECTOR_VGA;
1744         }
1745         else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_RGB1)
1746         {
1747                 sdvo_priv->controlled_output = SDVO_OUTPUT_RGB1;
1748                 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
1749                 encoder_type = DRM_MODE_ENCODER_DAC;
1750                 connector_type = DRM_MODE_CONNECTOR_VGA;
1751         }
1752         else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_LVDS0)
1753         {
1754                 sdvo_priv->controlled_output = SDVO_OUTPUT_LVDS0;
1755                 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
1756                 encoder_type = DRM_MODE_ENCODER_LVDS;
1757                 connector_type = DRM_MODE_CONNECTOR_LVDS;
1758         }
1759         else if (sdvo_priv->caps.output_flags & SDVO_OUTPUT_LVDS1)
1760         {
1761                 sdvo_priv->controlled_output = SDVO_OUTPUT_LVDS1;
1762                 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
1763                 encoder_type = DRM_MODE_ENCODER_LVDS;
1764                 connector_type = DRM_MODE_CONNECTOR_LVDS;
1765         }
1766         else
1767         {
1768                 unsigned char bytes[2];
1769
1770                 sdvo_priv->controlled_output = 0;
1771                 memcpy (bytes, &sdvo_priv->caps.output_flags, 2);
1772                 DRM_DEBUG("%s: Unknown SDVO output type (0x%02x%02x)\n",
1773                           SDVO_NAME(sdvo_priv),
1774                           bytes[0], bytes[1]);
1775                 encoder_type = DRM_MODE_ENCODER_NONE;
1776                 connector_type = DRM_MODE_CONNECTOR_Unknown;
1777                 goto err_i2c;
1778         }
1779
1780         drm_encoder_init(dev, &intel_output->enc, &intel_sdvo_enc_funcs, encoder_type);
1781         drm_encoder_helper_add(&intel_output->enc, &intel_sdvo_helper_funcs);
1782         connector->connector_type = connector_type;
1783
1784         drm_mode_connector_attach_encoder(&intel_output->base, &intel_output->enc);
1785         drm_sysfs_connector_add(connector);
1786
1787         intel_sdvo_select_ddc_bus(sdvo_priv);
1788
1789         /* Set the input timing to the screen. Assume always input 0. */
1790         intel_sdvo_set_target_input(intel_output, true, false);
1791
1792         intel_sdvo_get_input_pixel_clock_range(intel_output,
1793                                                &sdvo_priv->pixel_clock_min,
1794                                                &sdvo_priv->pixel_clock_max);
1795
1796
1797         DRM_DEBUG("%s device VID/DID: %02X:%02X.%02X, "
1798                   "clock range %dMHz - %dMHz, "
1799                   "input 1: %c, input 2: %c, "
1800                   "output 1: %c, output 2: %c\n",
1801                   SDVO_NAME(sdvo_priv),
1802                   sdvo_priv->caps.vendor_id, sdvo_priv->caps.device_id,
1803                   sdvo_priv->caps.device_rev_id,
1804                   sdvo_priv->pixel_clock_min / 1000,
1805                   sdvo_priv->pixel_clock_max / 1000,
1806                   (sdvo_priv->caps.sdvo_inputs_mask & 0x1) ? 'Y' : 'N',
1807                   (sdvo_priv->caps.sdvo_inputs_mask & 0x2) ? 'Y' : 'N',
1808                   /* check currently supported outputs */
1809                   sdvo_priv->caps.output_flags &
1810                         (SDVO_OUTPUT_TMDS0 | SDVO_OUTPUT_RGB0) ? 'Y' : 'N',
1811                   sdvo_priv->caps.output_flags &
1812                         (SDVO_OUTPUT_TMDS1 | SDVO_OUTPUT_RGB1) ? 'Y' : 'N');
1813
1814         intel_output->ddc_bus = i2cbus;
1815
1816         return true;
1817
1818 err_i2c:
1819         intel_i2c_destroy(intel_output->i2c_bus);
1820 err_connector:
1821         drm_connector_cleanup(connector);
1822         kfree(intel_output);
1823
1824         return false;
1825 }