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1/*
2 * Copyright © 2006-2007 Intel Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 *
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
16 *
17 * Authors:
18 * Eric Anholt <eric@anholt.net>
19 */
20
21#include <linux/i2c.h>
22#include <linux/pm_runtime.h>
23
24#include <drm/drmP.h>
25#include "psb_intel_reg.h"
26#include "gma_display.h"
27#include "framebuffer.h"
28#include "mdfld_output.h"
29#include "mdfld_dsi_output.h"
30
31/* Hardcoded currently */
32static int ksel = KSEL_CRYSTAL_19;
33
34struct psb_intel_range_t {
35 int min, max;
36};
37
38struct mrst_limit_t {
39 struct psb_intel_range_t dot, m, p1;
40};
41
42struct mrst_clock_t {
43 /* derived values */
44 int dot;
45 int m;
46 int p1;
47};
48
49#define COUNT_MAX 0x10000000
50
51void mdfldWaitForPipeDisable(struct drm_device *dev, int pipe)
52{
53 struct drm_psb_private *dev_priv = dev->dev_private;
54 const struct psb_offset *map = &dev_priv->regmap[pipe];
55 int count, temp;
56
57 switch (pipe) {
58 case 0:
59 case 1:
60 case 2:
61 break;
62 default:
63 DRM_ERROR("Illegal Pipe Number.\n");
64 return;
65 }
66
67 /* FIXME JLIU7_PO */
68 gma_wait_for_vblank(dev);
69 return;
70
71 /* Wait for for the pipe disable to take effect. */
72 for (count = 0; count < COUNT_MAX; count++) {
73 temp = REG_READ(map->conf);
74 if ((temp & PIPEACONF_PIPE_STATE) == 0)
75 break;
76 }
77}
78
79void mdfldWaitForPipeEnable(struct drm_device *dev, int pipe)
80{
81 struct drm_psb_private *dev_priv = dev->dev_private;
82 const struct psb_offset *map = &dev_priv->regmap[pipe];
83 int count, temp;
84
85 switch (pipe) {
86 case 0:
87 case 1:
88 case 2:
89 break;
90 default:
91 DRM_ERROR("Illegal Pipe Number.\n");
92 return;
93 }
94
95 /* FIXME JLIU7_PO */
96 gma_wait_for_vblank(dev);
97 return;
98
99 /* Wait for for the pipe enable to take effect. */
100 for (count = 0; count < COUNT_MAX; count++) {
101 temp = REG_READ(map->conf);
102 if ((temp & PIPEACONF_PIPE_STATE) == 1)
103 break;
104 }
105}
106
107/**
108 * Return the pipe currently connected to the panel fitter,
109 * or -1 if the panel fitter is not present or not in use
110 */
111static int psb_intel_panel_fitter_pipe(struct drm_device *dev)
112{
113 u32 pfit_control;
114
115 pfit_control = REG_READ(PFIT_CONTROL);
116
117 /* See if the panel fitter is in use */
118 if ((pfit_control & PFIT_ENABLE) == 0)
119 return -1;
120
121 /* 965 can place panel fitter on either pipe */
122 return (pfit_control >> 29) & 0x3;
123}
124
125static struct drm_device globle_dev;
126
127void mdfld__intel_plane_set_alpha(int enable)
128{
129 struct drm_device *dev = &globle_dev;
130 int dspcntr_reg = DSPACNTR;
131 u32 dspcntr;
132
133 dspcntr = REG_READ(dspcntr_reg);
134
135 if (enable) {
136 dspcntr &= ~DISPPLANE_32BPP_NO_ALPHA;
137 dspcntr |= DISPPLANE_32BPP;
138 } else {
139 dspcntr &= ~DISPPLANE_32BPP;
140 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
141 }
142
143 REG_WRITE(dspcntr_reg, dspcntr);
144}
145
146static int check_fb(struct drm_framebuffer *fb)
147{
148 if (!fb)
149 return 0;
150
151 switch (fb->bits_per_pixel) {
152 case 8:
153 case 16:
154 case 24:
155 case 32:
156 return 0;
157 default:
158 DRM_ERROR("Unknown color depth\n");
159 return -EINVAL;
160 }
161}
162
163static int mdfld__intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
164 struct drm_framebuffer *old_fb)
165{
166 struct drm_device *dev = crtc->dev;
167 struct drm_psb_private *dev_priv = dev->dev_private;
168 struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
169 struct psb_framebuffer *psbfb = to_psb_fb(crtc->primary->fb);
170 int pipe = gma_crtc->pipe;
171 const struct psb_offset *map = &dev_priv->regmap[pipe];
172 unsigned long start, offset;
173 u32 dspcntr;
174 int ret;
175
176 memcpy(&globle_dev, dev, sizeof(struct drm_device));
177
178 dev_dbg(dev->dev, "pipe = 0x%x.\n", pipe);
179
180 /* no fb bound */
181 if (!crtc->primary->fb) {
182 dev_dbg(dev->dev, "No FB bound\n");
183 return 0;
184 }
185
186 ret = check_fb(crtc->primary->fb);
187 if (ret)
188 return ret;
189
190 if (pipe > 2) {
191 DRM_ERROR("Illegal Pipe Number.\n");
192 return -EINVAL;
193 }
194
195 if (!gma_power_begin(dev, true))
196 return 0;
197
198 start = psbfb->gtt->offset;
199 offset = y * crtc->primary->fb->pitches[0] + x * (crtc->primary->fb->bits_per_pixel / 8);
200
201 REG_WRITE(map->stride, crtc->primary->fb->pitches[0]);
202 dspcntr = REG_READ(map->cntr);
203 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
204
205 switch (crtc->primary->fb->bits_per_pixel) {
206 case 8:
207 dspcntr |= DISPPLANE_8BPP;
208 break;
209 case 16:
210 if (crtc->primary->fb->depth == 15)
211 dspcntr |= DISPPLANE_15_16BPP;
212 else
213 dspcntr |= DISPPLANE_16BPP;
214 break;
215 case 24:
216 case 32:
217 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
218 break;
219 }
220 REG_WRITE(map->cntr, dspcntr);
221
222 dev_dbg(dev->dev, "Writing base %08lX %08lX %d %d\n",
223 start, offset, x, y);
224 REG_WRITE(map->linoff, offset);
225 REG_READ(map->linoff);
226 REG_WRITE(map->surf, start);
227 REG_READ(map->surf);
228
229 gma_power_end(dev);
230
231 return 0;
232}
233
234/*
235 * Disable the pipe, plane and pll.
236 *
237 */
238void mdfld_disable_crtc(struct drm_device *dev, int pipe)
239{
240 struct drm_psb_private *dev_priv = dev->dev_private;
241 const struct psb_offset *map = &dev_priv->regmap[pipe];
242 u32 temp;
243
244 dev_dbg(dev->dev, "pipe = %d\n", pipe);
245
246
247 if (pipe != 1)
248 mdfld_dsi_gen_fifo_ready(dev, MIPI_GEN_FIFO_STAT_REG(pipe),
249 HS_CTRL_FIFO_EMPTY | HS_DATA_FIFO_EMPTY);
250
251 /* Disable display plane */
252 temp = REG_READ(map->cntr);
253 if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
254 REG_WRITE(map->cntr,
255 temp & ~DISPLAY_PLANE_ENABLE);
256 /* Flush the plane changes */
257 REG_WRITE(map->base, REG_READ(map->base));
258 REG_READ(map->base);
259 }
260
261 /* FIXME_JLIU7 MDFLD_PO revisit */
262
263 /* Next, disable display pipes */
264 temp = REG_READ(map->conf);
265 if ((temp & PIPEACONF_ENABLE) != 0) {
266 temp &= ~PIPEACONF_ENABLE;
267 temp |= PIPECONF_PLANE_OFF | PIPECONF_CURSOR_OFF;
268 REG_WRITE(map->conf, temp);
269 REG_READ(map->conf);
270
271 /* Wait for for the pipe disable to take effect. */
272 mdfldWaitForPipeDisable(dev, pipe);
273 }
274
275 temp = REG_READ(map->dpll);
276 if (temp & DPLL_VCO_ENABLE) {
277 if ((pipe != 1 &&
278 !((REG_READ(PIPEACONF) | REG_READ(PIPECCONF))
279 & PIPEACONF_ENABLE)) || pipe == 1) {
280 temp &= ~(DPLL_VCO_ENABLE);
281 REG_WRITE(map->dpll, temp);
282 REG_READ(map->dpll);
283 /* Wait for the clocks to turn off. */
284 /* FIXME_MDFLD PO may need more delay */
285 udelay(500);
286
287 if (!(temp & MDFLD_PWR_GATE_EN)) {
288 /* gating power of DPLL */
289 REG_WRITE(map->dpll, temp | MDFLD_PWR_GATE_EN);
290 /* FIXME_MDFLD PO - change 500 to 1 after PO */
291 udelay(5000);
292 }
293 }
294 }
295
296}
297
298/**
299 * Sets the power management mode of the pipe and plane.
300 *
301 * This code should probably grow support for turning the cursor off and back
302 * on appropriately at the same time as we're turning the pipe off/on.
303 */
304static void mdfld_crtc_dpms(struct drm_crtc *crtc, int mode)
305{
306 struct drm_device *dev = crtc->dev;
307 struct drm_psb_private *dev_priv = dev->dev_private;
308 struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
309 int pipe = gma_crtc->pipe;
310 const struct psb_offset *map = &dev_priv->regmap[pipe];
311 u32 pipeconf = dev_priv->pipeconf[pipe];
312 u32 temp;
313 int timeout = 0;
314
315 dev_dbg(dev->dev, "mode = %d, pipe = %d\n", mode, pipe);
316
317 /* Note: Old code uses pipe a stat for pipe b but that appears
318 to be a bug */
319
320 if (!gma_power_begin(dev, true))
321 return;
322
323 /* XXX: When our outputs are all unaware of DPMS modes other than off
324 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
325 */
326 switch (mode) {
327 case DRM_MODE_DPMS_ON:
328 case DRM_MODE_DPMS_STANDBY:
329 case DRM_MODE_DPMS_SUSPEND:
330 /* Enable the DPLL */
331 temp = REG_READ(map->dpll);
332
333 if ((temp & DPLL_VCO_ENABLE) == 0) {
334 /* When ungating power of DPLL, needs to wait 0.5us
335 before enable the VCO */
336 if (temp & MDFLD_PWR_GATE_EN) {
337 temp &= ~MDFLD_PWR_GATE_EN;
338 REG_WRITE(map->dpll, temp);
339 /* FIXME_MDFLD PO - change 500 to 1 after PO */
340 udelay(500);
341 }
342
343 REG_WRITE(map->dpll, temp);
344 REG_READ(map->dpll);
345 /* FIXME_MDFLD PO - change 500 to 1 after PO */
346 udelay(500);
347
348 REG_WRITE(map->dpll, temp | DPLL_VCO_ENABLE);
349 REG_READ(map->dpll);
350
351 /**
352 * wait for DSI PLL to lock
353 * NOTE: only need to poll status of pipe 0 and pipe 1,
354 * since both MIPI pipes share the same PLL.
355 */
356 while ((pipe != 2) && (timeout < 20000) &&
357 !(REG_READ(map->conf) & PIPECONF_DSIPLL_LOCK)) {
358 udelay(150);
359 timeout++;
360 }
361 }
362
363 /* Enable the plane */
364 temp = REG_READ(map->cntr);
365 if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
366 REG_WRITE(map->cntr,
367 temp | DISPLAY_PLANE_ENABLE);
368 /* Flush the plane changes */
369 REG_WRITE(map->base, REG_READ(map->base));
370 }
371
372 /* Enable the pipe */
373 temp = REG_READ(map->conf);
374 if ((temp & PIPEACONF_ENABLE) == 0) {
375 REG_WRITE(map->conf, pipeconf);
376
377 /* Wait for for the pipe enable to take effect. */
378 mdfldWaitForPipeEnable(dev, pipe);
379 }
380
381 /*workaround for sighting 3741701 Random X blank display*/
382 /*perform w/a in video mode only on pipe A or C*/
383 if (pipe == 0 || pipe == 2) {
384 REG_WRITE(map->status, REG_READ(map->status));
385 msleep(100);
386 if (PIPE_VBLANK_STATUS & REG_READ(map->status))
387 dev_dbg(dev->dev, "OK");
388 else {
389 dev_dbg(dev->dev, "STUCK!!!!");
390 /*shutdown controller*/
391 temp = REG_READ(map->cntr);
392 REG_WRITE(map->cntr,
393 temp & ~DISPLAY_PLANE_ENABLE);
394 REG_WRITE(map->base, REG_READ(map->base));
395 /*mdfld_dsi_dpi_shut_down(dev, pipe);*/
396 REG_WRITE(0xb048, 1);
397 msleep(100);
398 temp = REG_READ(map->conf);
399 temp &= ~PIPEACONF_ENABLE;
400 REG_WRITE(map->conf, temp);
401 msleep(100); /*wait for pipe disable*/
402 REG_WRITE(MIPI_DEVICE_READY_REG(pipe), 0);
403 msleep(100);
404 REG_WRITE(0xb004, REG_READ(0xb004));
405 /* try to bring the controller back up again*/
406 REG_WRITE(MIPI_DEVICE_READY_REG(pipe), 1);
407 temp = REG_READ(map->cntr);
408 REG_WRITE(map->cntr,
409 temp | DISPLAY_PLANE_ENABLE);
410 REG_WRITE(map->base, REG_READ(map->base));
411 /*mdfld_dsi_dpi_turn_on(dev, pipe);*/
412 REG_WRITE(0xb048, 2);
413 msleep(100);
414 temp = REG_READ(map->conf);
415 temp |= PIPEACONF_ENABLE;
416 REG_WRITE(map->conf, temp);
417 }
418 }
419
420 gma_crtc_load_lut(crtc);
421
422 /* Give the overlay scaler a chance to enable
423 if it's on this pipe */
424 /* psb_intel_crtc_dpms_video(crtc, true); TODO */
425
426 break;
427 case DRM_MODE_DPMS_OFF:
428 /* Give the overlay scaler a chance to disable
429 * if it's on this pipe */
430 /* psb_intel_crtc_dpms_video(crtc, FALSE); TODO */
431 if (pipe != 1)
432 mdfld_dsi_gen_fifo_ready(dev,
433 MIPI_GEN_FIFO_STAT_REG(pipe),
434 HS_CTRL_FIFO_EMPTY | HS_DATA_FIFO_EMPTY);
435
436 /* Disable the VGA plane that we never use */
437 REG_WRITE(VGACNTRL, VGA_DISP_DISABLE);
438
439 /* Disable display plane */
440 temp = REG_READ(map->cntr);
441 if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
442 REG_WRITE(map->cntr,
443 temp & ~DISPLAY_PLANE_ENABLE);
444 /* Flush the plane changes */
445 REG_WRITE(map->base, REG_READ(map->base));
446 REG_READ(map->base);
447 }
448
449 /* Next, disable display pipes */
450 temp = REG_READ(map->conf);
451 if ((temp & PIPEACONF_ENABLE) != 0) {
452 temp &= ~PIPEACONF_ENABLE;
453 temp |= PIPECONF_PLANE_OFF | PIPECONF_CURSOR_OFF;
454 REG_WRITE(map->conf, temp);
455 REG_READ(map->conf);
456
457 /* Wait for for the pipe disable to take effect. */
458 mdfldWaitForPipeDisable(dev, pipe);
459 }
460
461 temp = REG_READ(map->dpll);
462 if (temp & DPLL_VCO_ENABLE) {
463 if ((pipe != 1 && !((REG_READ(PIPEACONF)
464 | REG_READ(PIPECCONF)) & PIPEACONF_ENABLE))
465 || pipe == 1) {
466 temp &= ~(DPLL_VCO_ENABLE);
467 REG_WRITE(map->dpll, temp);
468 REG_READ(map->dpll);
469 /* Wait for the clocks to turn off. */
470 /* FIXME_MDFLD PO may need more delay */
471 udelay(500);
472 }
473 }
474 break;
475 }
476 gma_power_end(dev);
477}
478
479
480#define MDFLD_LIMT_DPLL_19 0
481#define MDFLD_LIMT_DPLL_25 1
482#define MDFLD_LIMT_DPLL_83 2
483#define MDFLD_LIMT_DPLL_100 3
484#define MDFLD_LIMT_DSIPLL_19 4
485#define MDFLD_LIMT_DSIPLL_25 5
486#define MDFLD_LIMT_DSIPLL_83 6
487#define MDFLD_LIMT_DSIPLL_100 7
488
489#define MDFLD_DOT_MIN 19750
490#define MDFLD_DOT_MAX 120000
491#define MDFLD_DPLL_M_MIN_19 113
492#define MDFLD_DPLL_M_MAX_19 155
493#define MDFLD_DPLL_P1_MIN_19 2
494#define MDFLD_DPLL_P1_MAX_19 10
495#define MDFLD_DPLL_M_MIN_25 101
496#define MDFLD_DPLL_M_MAX_25 130
497#define MDFLD_DPLL_P1_MIN_25 2
498#define MDFLD_DPLL_P1_MAX_25 10
499#define MDFLD_DPLL_M_MIN_83 64
500#define MDFLD_DPLL_M_MAX_83 64
501#define MDFLD_DPLL_P1_MIN_83 2
502#define MDFLD_DPLL_P1_MAX_83 2
503#define MDFLD_DPLL_M_MIN_100 64
504#define MDFLD_DPLL_M_MAX_100 64
505#define MDFLD_DPLL_P1_MIN_100 2
506#define MDFLD_DPLL_P1_MAX_100 2
507#define MDFLD_DSIPLL_M_MIN_19 131
508#define MDFLD_DSIPLL_M_MAX_19 175
509#define MDFLD_DSIPLL_P1_MIN_19 3
510#define MDFLD_DSIPLL_P1_MAX_19 8
511#define MDFLD_DSIPLL_M_MIN_25 97
512#define MDFLD_DSIPLL_M_MAX_25 140
513#define MDFLD_DSIPLL_P1_MIN_25 3
514#define MDFLD_DSIPLL_P1_MAX_25 9
515#define MDFLD_DSIPLL_M_MIN_83 33
516#define MDFLD_DSIPLL_M_MAX_83 92
517#define MDFLD_DSIPLL_P1_MIN_83 2
518#define MDFLD_DSIPLL_P1_MAX_83 3
519#define MDFLD_DSIPLL_M_MIN_100 97
520#define MDFLD_DSIPLL_M_MAX_100 140
521#define MDFLD_DSIPLL_P1_MIN_100 3
522#define MDFLD_DSIPLL_P1_MAX_100 9
523
524static const struct mrst_limit_t mdfld_limits[] = {
525 { /* MDFLD_LIMT_DPLL_19 */
526 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
527 .m = {.min = MDFLD_DPLL_M_MIN_19, .max = MDFLD_DPLL_M_MAX_19},
528 .p1 = {.min = MDFLD_DPLL_P1_MIN_19, .max = MDFLD_DPLL_P1_MAX_19},
529 },
530 { /* MDFLD_LIMT_DPLL_25 */
531 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
532 .m = {.min = MDFLD_DPLL_M_MIN_25, .max = MDFLD_DPLL_M_MAX_25},
533 .p1 = {.min = MDFLD_DPLL_P1_MIN_25, .max = MDFLD_DPLL_P1_MAX_25},
534 },
535 { /* MDFLD_LIMT_DPLL_83 */
536 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
537 .m = {.min = MDFLD_DPLL_M_MIN_83, .max = MDFLD_DPLL_M_MAX_83},
538 .p1 = {.min = MDFLD_DPLL_P1_MIN_83, .max = MDFLD_DPLL_P1_MAX_83},
539 },
540 { /* MDFLD_LIMT_DPLL_100 */
541 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
542 .m = {.min = MDFLD_DPLL_M_MIN_100, .max = MDFLD_DPLL_M_MAX_100},
543 .p1 = {.min = MDFLD_DPLL_P1_MIN_100, .max = MDFLD_DPLL_P1_MAX_100},
544 },
545 { /* MDFLD_LIMT_DSIPLL_19 */
546 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
547 .m = {.min = MDFLD_DSIPLL_M_MIN_19, .max = MDFLD_DSIPLL_M_MAX_19},
548 .p1 = {.min = MDFLD_DSIPLL_P1_MIN_19, .max = MDFLD_DSIPLL_P1_MAX_19},
549 },
550 { /* MDFLD_LIMT_DSIPLL_25 */
551 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
552 .m = {.min = MDFLD_DSIPLL_M_MIN_25, .max = MDFLD_DSIPLL_M_MAX_25},
553 .p1 = {.min = MDFLD_DSIPLL_P1_MIN_25, .max = MDFLD_DSIPLL_P1_MAX_25},
554 },
555 { /* MDFLD_LIMT_DSIPLL_83 */
556 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
557 .m = {.min = MDFLD_DSIPLL_M_MIN_83, .max = MDFLD_DSIPLL_M_MAX_83},
558 .p1 = {.min = MDFLD_DSIPLL_P1_MIN_83, .max = MDFLD_DSIPLL_P1_MAX_83},
559 },
560 { /* MDFLD_LIMT_DSIPLL_100 */
561 .dot = {.min = MDFLD_DOT_MIN, .max = MDFLD_DOT_MAX},
562 .m = {.min = MDFLD_DSIPLL_M_MIN_100, .max = MDFLD_DSIPLL_M_MAX_100},
563 .p1 = {.min = MDFLD_DSIPLL_P1_MIN_100, .max = MDFLD_DSIPLL_P1_MAX_100},
564 },
565};
566
567#define MDFLD_M_MIN 21
568#define MDFLD_M_MAX 180
569static const u32 mdfld_m_converts[] = {
570/* M configuration table from 9-bit LFSR table */
571 224, 368, 440, 220, 366, 439, 219, 365, 182, 347, /* 21 - 30 */
572 173, 342, 171, 85, 298, 149, 74, 37, 18, 265, /* 31 - 40 */
573 388, 194, 353, 432, 216, 108, 310, 155, 333, 166, /* 41 - 50 */
574 83, 41, 276, 138, 325, 162, 337, 168, 340, 170, /* 51 - 60 */
575 341, 426, 469, 234, 373, 442, 221, 110, 311, 411, /* 61 - 70 */
576 461, 486, 243, 377, 188, 350, 175, 343, 427, 213, /* 71 - 80 */
577 106, 53, 282, 397, 354, 227, 113, 56, 284, 142, /* 81 - 90 */
578 71, 35, 273, 136, 324, 418, 465, 488, 500, 506, /* 91 - 100 */
579 253, 126, 63, 287, 399, 455, 483, 241, 376, 444, /* 101 - 110 */
580 478, 495, 503, 251, 381, 446, 479, 239, 375, 443, /* 111 - 120 */
581 477, 238, 119, 315, 157, 78, 295, 147, 329, 420, /* 121 - 130 */
582 210, 105, 308, 154, 77, 38, 275, 137, 68, 290, /* 131 - 140 */
583 145, 328, 164, 82, 297, 404, 458, 485, 498, 249, /* 141 - 150 */
584 380, 190, 351, 431, 471, 235, 117, 314, 413, 206, /* 151 - 160 */
585 103, 51, 25, 12, 262, 387, 193, 96, 48, 280, /* 161 - 170 */
586 396, 198, 99, 305, 152, 76, 294, 403, 457, 228, /* 171 - 180 */
587};
588
589static const struct mrst_limit_t *mdfld_limit(struct drm_crtc *crtc)
590{
591 const struct mrst_limit_t *limit = NULL;
592 struct drm_device *dev = crtc->dev;
593 struct drm_psb_private *dev_priv = dev->dev_private;
594
595 if (gma_pipe_has_type(crtc, INTEL_OUTPUT_MIPI)
596 || gma_pipe_has_type(crtc, INTEL_OUTPUT_MIPI2)) {
597 if ((ksel == KSEL_CRYSTAL_19) || (ksel == KSEL_BYPASS_19))
598 limit = &mdfld_limits[MDFLD_LIMT_DSIPLL_19];
599 else if (ksel == KSEL_BYPASS_25)
600 limit = &mdfld_limits[MDFLD_LIMT_DSIPLL_25];
601 else if ((ksel == KSEL_BYPASS_83_100) &&
602 (dev_priv->core_freq == 166))
603 limit = &mdfld_limits[MDFLD_LIMT_DSIPLL_83];
604 else if ((ksel == KSEL_BYPASS_83_100) &&
605 (dev_priv->core_freq == 100 ||
606 dev_priv->core_freq == 200))
607 limit = &mdfld_limits[MDFLD_LIMT_DSIPLL_100];
608 } else if (gma_pipe_has_type(crtc, INTEL_OUTPUT_HDMI)) {
609 if ((ksel == KSEL_CRYSTAL_19) || (ksel == KSEL_BYPASS_19))
610 limit = &mdfld_limits[MDFLD_LIMT_DPLL_19];
611 else if (ksel == KSEL_BYPASS_25)
612 limit = &mdfld_limits[MDFLD_LIMT_DPLL_25];
613 else if ((ksel == KSEL_BYPASS_83_100) &&
614 (dev_priv->core_freq == 166))
615 limit = &mdfld_limits[MDFLD_LIMT_DPLL_83];
616 else if ((ksel == KSEL_BYPASS_83_100) &&
617 (dev_priv->core_freq == 100 ||
618 dev_priv->core_freq == 200))
619 limit = &mdfld_limits[MDFLD_LIMT_DPLL_100];
620 } else {
621 limit = NULL;
622 dev_dbg(dev->dev, "mdfld_limit Wrong display type.\n");
623 }
624
625 return limit;
626}
627
628/** Derive the pixel clock for the given refclk and divisors for 8xx chips. */
629static void mdfld_clock(int refclk, struct mrst_clock_t *clock)
630{
631 clock->dot = (refclk * clock->m) / clock->p1;
632}
633
634/**
635 * Returns a set of divisors for the desired target clock with the given refclk,
636 * or FALSE. Divisor values are the actual divisors for
637 */
638static bool
639mdfldFindBestPLL(struct drm_crtc *crtc, int target, int refclk,
640 struct mrst_clock_t *best_clock)
641{
642 struct mrst_clock_t clock;
643 const struct mrst_limit_t *limit = mdfld_limit(crtc);
644 int err = target;
645
646 memset(best_clock, 0, sizeof(*best_clock));
647
648 for (clock.m = limit->m.min; clock.m <= limit->m.max; clock.m++) {
649 for (clock.p1 = limit->p1.min; clock.p1 <= limit->p1.max;
650 clock.p1++) {
651 int this_err;
652
653 mdfld_clock(refclk, &clock);
654
655 this_err = abs(clock.dot - target);
656 if (this_err < err) {
657 *best_clock = clock;
658 err = this_err;
659 }
660 }
661 }
662 return err != target;
663}
664
665static int mdfld_crtc_mode_set(struct drm_crtc *crtc,
666 struct drm_display_mode *mode,
667 struct drm_display_mode *adjusted_mode,
668 int x, int y,
669 struct drm_framebuffer *old_fb)
670{
671 struct drm_device *dev = crtc->dev;
672 struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
673 struct drm_psb_private *dev_priv = dev->dev_private;
674 int pipe = gma_crtc->pipe;
675 const struct psb_offset *map = &dev_priv->regmap[pipe];
676 int refclk = 0;
677 int clk_n = 0, clk_p2 = 0, clk_byte = 1, clk = 0, m_conv = 0,
678 clk_tmp = 0;
679 struct mrst_clock_t clock;
680 bool ok;
681 u32 dpll = 0, fp = 0;
682 bool is_mipi = false, is_mipi2 = false, is_hdmi = false;
683 struct drm_mode_config *mode_config = &dev->mode_config;
684 struct gma_encoder *gma_encoder = NULL;
685 uint64_t scalingType = DRM_MODE_SCALE_FULLSCREEN;
686 struct drm_encoder *encoder;
687 struct drm_connector *connector;
688 int timeout = 0;
689 int ret;
690
691 dev_dbg(dev->dev, "pipe = 0x%x\n", pipe);
692
693#if 0
694 if (pipe == 1) {
695 if (!gma_power_begin(dev, true))
696 return 0;
697 android_hdmi_crtc_mode_set(crtc, mode, adjusted_mode,
698 x, y, old_fb);
699 goto mrst_crtc_mode_set_exit;
700 }
701#endif
702
703 ret = check_fb(crtc->primary->fb);
704 if (ret)
705 return ret;
706
707 dev_dbg(dev->dev, "adjusted_hdisplay = %d\n",
708 adjusted_mode->hdisplay);
709 dev_dbg(dev->dev, "adjusted_vdisplay = %d\n",
710 adjusted_mode->vdisplay);
711 dev_dbg(dev->dev, "adjusted_hsync_start = %d\n",
712 adjusted_mode->hsync_start);
713 dev_dbg(dev->dev, "adjusted_hsync_end = %d\n",
714 adjusted_mode->hsync_end);
715 dev_dbg(dev->dev, "adjusted_htotal = %d\n",
716 adjusted_mode->htotal);
717 dev_dbg(dev->dev, "adjusted_vsync_start = %d\n",
718 adjusted_mode->vsync_start);
719 dev_dbg(dev->dev, "adjusted_vsync_end = %d\n",
720 adjusted_mode->vsync_end);
721 dev_dbg(dev->dev, "adjusted_vtotal = %d\n",
722 adjusted_mode->vtotal);
723 dev_dbg(dev->dev, "adjusted_clock = %d\n",
724 adjusted_mode->clock);
725 dev_dbg(dev->dev, "hdisplay = %d\n",
726 mode->hdisplay);
727 dev_dbg(dev->dev, "vdisplay = %d\n",
728 mode->vdisplay);
729
730 if (!gma_power_begin(dev, true))
731 return 0;
732
733 memcpy(&gma_crtc->saved_mode, mode,
734 sizeof(struct drm_display_mode));
735 memcpy(&gma_crtc->saved_adjusted_mode, adjusted_mode,
736 sizeof(struct drm_display_mode));
737
738 list_for_each_entry(connector, &mode_config->connector_list, head) {
739 if (!connector)
740 continue;
741
742 encoder = connector->encoder;
743
744 if (!encoder)
745 continue;
746
747 if (encoder->crtc != crtc)
748 continue;
749
750 gma_encoder = gma_attached_encoder(connector);
751
752 switch (gma_encoder->type) {
753 case INTEL_OUTPUT_MIPI:
754 is_mipi = true;
755 break;
756 case INTEL_OUTPUT_MIPI2:
757 is_mipi2 = true;
758 break;
759 case INTEL_OUTPUT_HDMI:
760 is_hdmi = true;
761 break;
762 }
763 }
764
765 /* Disable the VGA plane that we never use */
766 REG_WRITE(VGACNTRL, VGA_DISP_DISABLE);
767
768 /* Disable the panel fitter if it was on our pipe */
769 if (psb_intel_panel_fitter_pipe(dev) == pipe)
770 REG_WRITE(PFIT_CONTROL, 0);
771
772 /* pipesrc and dspsize control the size that is scaled from,
773 * which should always be the user's requested size.
774 */
775 if (pipe == 1) {
776 /* FIXME: To make HDMI display with 864x480 (TPO), 480x864
777 * (PYR) or 480x854 (TMD), set the sprite width/height and
778 * souce image size registers with the adjusted mode for
779 * pipe B.
780 */
781
782 /*
783 * The defined sprite rectangle must always be completely
784 * contained within the displayable area of the screen image
785 * (frame buffer).
786 */
787 REG_WRITE(map->size, ((min(mode->crtc_vdisplay, adjusted_mode->crtc_vdisplay) - 1) << 16)
788 | (min(mode->crtc_hdisplay, adjusted_mode->crtc_hdisplay) - 1));
789 /* Set the CRTC with encoder mode. */
790 REG_WRITE(map->src, ((mode->crtc_hdisplay - 1) << 16)
791 | (mode->crtc_vdisplay - 1));
792 } else {
793 REG_WRITE(map->size,
794 ((mode->crtc_vdisplay - 1) << 16) |
795 (mode->crtc_hdisplay - 1));
796 REG_WRITE(map->src,
797 ((mode->crtc_hdisplay - 1) << 16) |
798 (mode->crtc_vdisplay - 1));
799 }
800
801 REG_WRITE(map->pos, 0);
802
803 if (gma_encoder)
804 drm_object_property_get_value(&connector->base,
805 dev->mode_config.scaling_mode_property, &scalingType);
806
807 if (scalingType == DRM_MODE_SCALE_NO_SCALE) {
808 /* Medfield doesn't have register support for centering so we
809 * need to mess with the h/vblank and h/vsync start and ends
810 * to get centering
811 */
812 int offsetX = 0, offsetY = 0;
813
814 offsetX = (adjusted_mode->crtc_hdisplay -
815 mode->crtc_hdisplay) / 2;
816 offsetY = (adjusted_mode->crtc_vdisplay -
817 mode->crtc_vdisplay) / 2;
818
819 REG_WRITE(map->htotal, (mode->crtc_hdisplay - 1) |
820 ((adjusted_mode->crtc_htotal - 1) << 16));
821 REG_WRITE(map->vtotal, (mode->crtc_vdisplay - 1) |
822 ((adjusted_mode->crtc_vtotal - 1) << 16));
823 REG_WRITE(map->hblank, (adjusted_mode->crtc_hblank_start -
824 offsetX - 1) |
825 ((adjusted_mode->crtc_hblank_end - offsetX - 1) << 16));
826 REG_WRITE(map->hsync, (adjusted_mode->crtc_hsync_start -
827 offsetX - 1) |
828 ((adjusted_mode->crtc_hsync_end - offsetX - 1) << 16));
829 REG_WRITE(map->vblank, (adjusted_mode->crtc_vblank_start -
830 offsetY - 1) |
831 ((adjusted_mode->crtc_vblank_end - offsetY - 1) << 16));
832 REG_WRITE(map->vsync, (adjusted_mode->crtc_vsync_start -
833 offsetY - 1) |
834 ((adjusted_mode->crtc_vsync_end - offsetY - 1) << 16));
835 } else {
836 REG_WRITE(map->htotal, (adjusted_mode->crtc_hdisplay - 1) |
837 ((adjusted_mode->crtc_htotal - 1) << 16));
838 REG_WRITE(map->vtotal, (adjusted_mode->crtc_vdisplay - 1) |
839 ((adjusted_mode->crtc_vtotal - 1) << 16));
840 REG_WRITE(map->hblank, (adjusted_mode->crtc_hblank_start - 1) |
841 ((adjusted_mode->crtc_hblank_end - 1) << 16));
842 REG_WRITE(map->hsync, (adjusted_mode->crtc_hsync_start - 1) |
843 ((adjusted_mode->crtc_hsync_end - 1) << 16));
844 REG_WRITE(map->vblank, (adjusted_mode->crtc_vblank_start - 1) |
845 ((adjusted_mode->crtc_vblank_end - 1) << 16));
846 REG_WRITE(map->vsync, (adjusted_mode->crtc_vsync_start - 1) |
847 ((adjusted_mode->crtc_vsync_end - 1) << 16));
848 }
849
850 /* Flush the plane changes */
851 {
852 const struct drm_crtc_helper_funcs *crtc_funcs =
853 crtc->helper_private;
854 crtc_funcs->mode_set_base(crtc, x, y, old_fb);
855 }
856
857 /* setup pipeconf */
858 dev_priv->pipeconf[pipe] = PIPEACONF_ENABLE; /* FIXME_JLIU7 REG_READ(pipeconf_reg); */
859
860 /* Set up the display plane register */
861 dev_priv->dspcntr[pipe] = REG_READ(map->cntr);
862 dev_priv->dspcntr[pipe] |= pipe << DISPPLANE_SEL_PIPE_POS;
863 dev_priv->dspcntr[pipe] |= DISPLAY_PLANE_ENABLE;
864
865 if (is_mipi2)
866 goto mrst_crtc_mode_set_exit;
867 clk = adjusted_mode->clock;
868
869 if (is_hdmi) {
870 if ((ksel == KSEL_CRYSTAL_19) || (ksel == KSEL_BYPASS_19)) {
871 refclk = 19200;
872
873 if (is_mipi || is_mipi2)
874 clk_n = 1, clk_p2 = 8;
875 else if (is_hdmi)
876 clk_n = 1, clk_p2 = 10;
877 } else if (ksel == KSEL_BYPASS_25) {
878 refclk = 25000;
879
880 if (is_mipi || is_mipi2)
881 clk_n = 1, clk_p2 = 8;
882 else if (is_hdmi)
883 clk_n = 1, clk_p2 = 10;
884 } else if ((ksel == KSEL_BYPASS_83_100) &&
885 dev_priv->core_freq == 166) {
886 refclk = 83000;
887
888 if (is_mipi || is_mipi2)
889 clk_n = 4, clk_p2 = 8;
890 else if (is_hdmi)
891 clk_n = 4, clk_p2 = 10;
892 } else if ((ksel == KSEL_BYPASS_83_100) &&
893 (dev_priv->core_freq == 100 ||
894 dev_priv->core_freq == 200)) {
895 refclk = 100000;
896 if (is_mipi || is_mipi2)
897 clk_n = 4, clk_p2 = 8;
898 else if (is_hdmi)
899 clk_n = 4, clk_p2 = 10;
900 }
901
902 if (is_mipi)
903 clk_byte = dev_priv->bpp / 8;
904 else if (is_mipi2)
905 clk_byte = dev_priv->bpp2 / 8;
906
907 clk_tmp = clk * clk_n * clk_p2 * clk_byte;
908
909 dev_dbg(dev->dev, "clk = %d, clk_n = %d, clk_p2 = %d.\n",
910 clk, clk_n, clk_p2);
911 dev_dbg(dev->dev, "adjusted_mode->clock = %d, clk_tmp = %d.\n",
912 adjusted_mode->clock, clk_tmp);
913
914 ok = mdfldFindBestPLL(crtc, clk_tmp, refclk, &clock);
915
916 if (!ok) {
917 DRM_ERROR
918 ("mdfldFindBestPLL fail in mdfld_crtc_mode_set.\n");
919 } else {
920 m_conv = mdfld_m_converts[(clock.m - MDFLD_M_MIN)];
921
922 dev_dbg(dev->dev, "dot clock = %d,"
923 "m = %d, p1 = %d, m_conv = %d.\n",
924 clock.dot, clock.m,
925 clock.p1, m_conv);
926 }
927
928 dpll = REG_READ(map->dpll);
929
930 if (dpll & DPLL_VCO_ENABLE) {
931 dpll &= ~DPLL_VCO_ENABLE;
932 REG_WRITE(map->dpll, dpll);
933 REG_READ(map->dpll);
934
935 /* FIXME jliu7 check the DPLL lock bit PIPEACONF[29] */
936 /* FIXME_MDFLD PO - change 500 to 1 after PO */
937 udelay(500);
938
939 /* reset M1, N1 & P1 */
940 REG_WRITE(map->fp0, 0);
941 dpll &= ~MDFLD_P1_MASK;
942 REG_WRITE(map->dpll, dpll);
943 /* FIXME_MDFLD PO - change 500 to 1 after PO */
944 udelay(500);
945 }
946
947 /* When ungating power of DPLL, needs to wait 0.5us before
948 * enable the VCO */
949 if (dpll & MDFLD_PWR_GATE_EN) {
950 dpll &= ~MDFLD_PWR_GATE_EN;
951 REG_WRITE(map->dpll, dpll);
952 /* FIXME_MDFLD PO - change 500 to 1 after PO */
953 udelay(500);
954 }
955 dpll = 0;
956
957#if 0 /* FIXME revisit later */
958 if (ksel == KSEL_CRYSTAL_19 || ksel == KSEL_BYPASS_19 ||
959 ksel == KSEL_BYPASS_25)
960 dpll &= ~MDFLD_INPUT_REF_SEL;
961 else if (ksel == KSEL_BYPASS_83_100)
962 dpll |= MDFLD_INPUT_REF_SEL;
963#endif /* FIXME revisit later */
964
965 if (is_hdmi)
966 dpll |= MDFLD_VCO_SEL;
967
968 fp = (clk_n / 2) << 16;
969 fp |= m_conv;
970
971 /* compute bitmask from p1 value */
972 dpll |= (1 << (clock.p1 - 2)) << 17;
973
974#if 0 /* 1080p30 & 720p */
975 dpll = 0x00050000;
976 fp = 0x000001be;
977#endif
978#if 0 /* 480p */
979 dpll = 0x02010000;
980 fp = 0x000000d2;
981#endif
982 } else {
983#if 0 /*DBI_TPO_480x864*/
984 dpll = 0x00020000;
985 fp = 0x00000156;
986#endif /* DBI_TPO_480x864 */ /* get from spec. */
987
988 dpll = 0x00800000;
989 fp = 0x000000c1;
990 }
991
992 REG_WRITE(map->fp0, fp);
993 REG_WRITE(map->dpll, dpll);
994 /* FIXME_MDFLD PO - change 500 to 1 after PO */
995 udelay(500);
996
997 dpll |= DPLL_VCO_ENABLE;
998 REG_WRITE(map->dpll, dpll);
999 REG_READ(map->dpll);
1000
1001 /* wait for DSI PLL to lock */
1002 while (timeout < 20000 &&
1003 !(REG_READ(map->conf) & PIPECONF_DSIPLL_LOCK)) {
1004 udelay(150);
1005 timeout++;
1006 }
1007
1008 if (is_mipi)
1009 goto mrst_crtc_mode_set_exit;
1010
1011 dev_dbg(dev->dev, "is_mipi = 0x%x\n", is_mipi);
1012
1013 REG_WRITE(map->conf, dev_priv->pipeconf[pipe]);
1014 REG_READ(map->conf);
1015
1016 /* Wait for for the pipe enable to take effect. */
1017 REG_WRITE(map->cntr, dev_priv->dspcntr[pipe]);
1018 gma_wait_for_vblank(dev);
1019
1020mrst_crtc_mode_set_exit:
1021
1022 gma_power_end(dev);
1023
1024 return 0;
1025}
1026
1027const struct drm_crtc_helper_funcs mdfld_helper_funcs = {
1028 .dpms = mdfld_crtc_dpms,
1029 .mode_set = mdfld_crtc_mode_set,
1030 .mode_set_base = mdfld__intel_pipe_set_base,
1031 .prepare = gma_crtc_prepare,
1032 .commit = gma_crtc_commit,
1033};