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1/*
2 * Copyright © 2010 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Li Peng <peng.li@intel.com>
25 */
26
27#include <linux/delay.h>
28
29#include <drm/drm.h>
30#include <drm/drm_crtc_helper.h>
31#include <drm/drm_edid.h>
32#include <drm/drm_modeset_helper_vtables.h>
33#include <drm/drm_simple_kms_helper.h>
34
35#include "psb_drv.h"
36#include "psb_intel_drv.h"
37#include "psb_intel_reg.h"
38
39#define HDMI_READ(reg) readl(hdmi_dev->regs + (reg))
40#define HDMI_WRITE(reg, val) writel(val, hdmi_dev->regs + (reg))
41
42#define HDMI_HCR 0x1000
43#define HCR_ENABLE_HDCP (1 << 5)
44#define HCR_ENABLE_AUDIO (1 << 2)
45#define HCR_ENABLE_PIXEL (1 << 1)
46#define HCR_ENABLE_TMDS (1 << 0)
47
48#define HDMI_HICR 0x1004
49#define HDMI_HSR 0x1008
50#define HDMI_HISR 0x100C
51#define HDMI_DETECT_HDP (1 << 0)
52
53#define HDMI_VIDEO_REG 0x3000
54#define HDMI_UNIT_EN (1 << 7)
55#define HDMI_MODE_OUTPUT (1 << 0)
56#define HDMI_HBLANK_A 0x3100
57
58#define HDMI_AUDIO_CTRL 0x4000
59#define HDMI_ENABLE_AUDIO (1 << 0)
60
61#define PCH_HTOTAL_B 0x3100
62#define PCH_HBLANK_B 0x3104
63#define PCH_HSYNC_B 0x3108
64#define PCH_VTOTAL_B 0x310C
65#define PCH_VBLANK_B 0x3110
66#define PCH_VSYNC_B 0x3114
67#define PCH_PIPEBSRC 0x311C
68
69#define PCH_PIPEB_DSL 0x3800
70#define PCH_PIPEB_SLC 0x3804
71#define PCH_PIPEBCONF 0x3808
72#define PCH_PIPEBSTAT 0x3824
73
74#define CDVO_DFT 0x5000
75#define CDVO_SLEWRATE 0x5004
76#define CDVO_STRENGTH 0x5008
77#define CDVO_RCOMP 0x500C
78
79#define DPLL_CTRL 0x6000
80#define DPLL_PDIV_SHIFT 16
81#define DPLL_PDIV_MASK (0xf << 16)
82#define DPLL_PWRDN (1 << 4)
83#define DPLL_RESET (1 << 3)
84#define DPLL_FASTEN (1 << 2)
85#define DPLL_ENSTAT (1 << 1)
86#define DPLL_DITHEN (1 << 0)
87
88#define DPLL_DIV_CTRL 0x6004
89#define DPLL_CLKF_MASK 0xffffffc0
90#define DPLL_CLKR_MASK (0x3f)
91
92#define DPLL_CLK_ENABLE 0x6008
93#define DPLL_EN_DISP (1 << 31)
94#define DPLL_SEL_HDMI (1 << 8)
95#define DPLL_EN_HDMI (1 << 1)
96#define DPLL_EN_VGA (1 << 0)
97
98#define DPLL_ADJUST 0x600C
99#define DPLL_STATUS 0x6010
100#define DPLL_UPDATE 0x6014
101#define DPLL_DFT 0x6020
102
103struct intel_range {
104 int min, max;
105};
106
107struct oaktrail_hdmi_limit {
108 struct intel_range vco, np, nr, nf;
109};
110
111struct oaktrail_hdmi_clock {
112 int np;
113 int nr;
114 int nf;
115 int dot;
116};
117
118#define VCO_MIN 320000
119#define VCO_MAX 1650000
120#define NP_MIN 1
121#define NP_MAX 15
122#define NR_MIN 1
123#define NR_MAX 64
124#define NF_MIN 2
125#define NF_MAX 4095
126
127static const struct oaktrail_hdmi_limit oaktrail_hdmi_limit = {
128 .vco = { .min = VCO_MIN, .max = VCO_MAX },
129 .np = { .min = NP_MIN, .max = NP_MAX },
130 .nr = { .min = NR_MIN, .max = NR_MAX },
131 .nf = { .min = NF_MIN, .max = NF_MAX },
132};
133
134static void oaktrail_hdmi_audio_enable(struct drm_device *dev)
135{
136 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
137 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
138
139 HDMI_WRITE(HDMI_HCR, 0x67);
140 HDMI_READ(HDMI_HCR);
141
142 HDMI_WRITE(0x51a8, 0x10);
143 HDMI_READ(0x51a8);
144
145 HDMI_WRITE(HDMI_AUDIO_CTRL, 0x1);
146 HDMI_READ(HDMI_AUDIO_CTRL);
147}
148
149static void oaktrail_hdmi_audio_disable(struct drm_device *dev)
150{
151 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
152 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
153
154 HDMI_WRITE(0x51a8, 0x0);
155 HDMI_READ(0x51a8);
156
157 HDMI_WRITE(HDMI_AUDIO_CTRL, 0x0);
158 HDMI_READ(HDMI_AUDIO_CTRL);
159
160 HDMI_WRITE(HDMI_HCR, 0x47);
161 HDMI_READ(HDMI_HCR);
162}
163
164static unsigned int htotal_calculate(struct drm_display_mode *mode)
165{
166 u32 new_crtc_htotal;
167
168 /*
169 * 1024 x 768 new_crtc_htotal = 0x1024;
170 * 1280 x 1024 new_crtc_htotal = 0x0c34;
171 */
172 new_crtc_htotal = (mode->crtc_htotal - 1) * 200 * 1000 / mode->clock;
173
174 DRM_DEBUG_KMS("new crtc htotal 0x%4x\n", new_crtc_htotal);
175 return (mode->crtc_hdisplay - 1) | (new_crtc_htotal << 16);
176}
177
178static void oaktrail_hdmi_find_dpll(struct drm_crtc *crtc, int target,
179 int refclk, struct oaktrail_hdmi_clock *best_clock)
180{
181 int np_min, np_max, nr_min, nr_max;
182 int np, nr, nf;
183
184 np_min = DIV_ROUND_UP(oaktrail_hdmi_limit.vco.min, target * 10);
185 np_max = oaktrail_hdmi_limit.vco.max / (target * 10);
186 if (np_min < oaktrail_hdmi_limit.np.min)
187 np_min = oaktrail_hdmi_limit.np.min;
188 if (np_max > oaktrail_hdmi_limit.np.max)
189 np_max = oaktrail_hdmi_limit.np.max;
190
191 nr_min = DIV_ROUND_UP((refclk * 1000), (target * 10 * np_max));
192 nr_max = DIV_ROUND_UP((refclk * 1000), (target * 10 * np_min));
193 if (nr_min < oaktrail_hdmi_limit.nr.min)
194 nr_min = oaktrail_hdmi_limit.nr.min;
195 if (nr_max > oaktrail_hdmi_limit.nr.max)
196 nr_max = oaktrail_hdmi_limit.nr.max;
197
198 np = DIV_ROUND_UP((refclk * 1000), (target * 10 * nr_max));
199 nr = DIV_ROUND_UP((refclk * 1000), (target * 10 * np));
200 nf = DIV_ROUND_CLOSEST((target * 10 * np * nr), refclk);
201 DRM_DEBUG_KMS("np, nr, nf %d %d %d\n", np, nr, nf);
202
203 /*
204 * 1024 x 768 np = 1; nr = 0x26; nf = 0x0fd8000;
205 * 1280 x 1024 np = 1; nr = 0x17; nf = 0x1034000;
206 */
207 best_clock->np = np;
208 best_clock->nr = nr - 1;
209 best_clock->nf = (nf << 14);
210}
211
212static void scu_busy_loop(void __iomem *scu_base)
213{
214 u32 status = 0;
215 u32 loop_count = 0;
216
217 status = readl(scu_base + 0x04);
218 while (status & 1) {
219 udelay(1); /* scu processing time is in few u secods */
220 status = readl(scu_base + 0x04);
221 loop_count++;
222 /* break if scu doesn't reset busy bit after huge retry */
223 if (loop_count > 1000) {
224 DRM_DEBUG_KMS("SCU IPC timed out");
225 return;
226 }
227 }
228}
229
230/*
231 * You don't want to know, you really really don't want to know....
232 *
233 * This is magic. However it's safe magic because of the way the platform
234 * works and it is necessary magic.
235 */
236static void oaktrail_hdmi_reset(struct drm_device *dev)
237{
238 void __iomem *base;
239 unsigned long scu_ipc_mmio = 0xff11c000UL;
240 int scu_len = 1024;
241
242 base = ioremap((resource_size_t)scu_ipc_mmio, scu_len);
243 if (base == NULL) {
244 DRM_ERROR("failed to map scu mmio\n");
245 return;
246 }
247
248 /* scu ipc: assert hdmi controller reset */
249 writel(0xff11d118, base + 0x0c);
250 writel(0x7fffffdf, base + 0x80);
251 writel(0x42005, base + 0x0);
252 scu_busy_loop(base);
253
254 /* scu ipc: de-assert hdmi controller reset */
255 writel(0xff11d118, base + 0x0c);
256 writel(0x7fffffff, base + 0x80);
257 writel(0x42005, base + 0x0);
258 scu_busy_loop(base);
259
260 iounmap(base);
261}
262
263int oaktrail_crtc_hdmi_mode_set(struct drm_crtc *crtc,
264 struct drm_display_mode *mode,
265 struct drm_display_mode *adjusted_mode,
266 int x, int y,
267 struct drm_framebuffer *old_fb)
268{
269 struct drm_device *dev = crtc->dev;
270 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
271 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
272 int pipe = 1;
273 int htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B;
274 int hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B;
275 int hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B;
276 int vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B;
277 int vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B;
278 int vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
279 int dspsize_reg = (pipe == 0) ? DSPASIZE : DSPBSIZE;
280 int dsppos_reg = (pipe == 0) ? DSPAPOS : DSPBPOS;
281 int pipesrc_reg = (pipe == 0) ? PIPEASRC : PIPEBSRC;
282 int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
283 int refclk;
284 struct oaktrail_hdmi_clock clock;
285 u32 dspcntr, pipeconf, dpll, temp;
286 int dspcntr_reg = DSPBCNTR;
287
288 if (!gma_power_begin(dev, true))
289 return 0;
290
291 /* Disable the VGA plane that we never use */
292 REG_WRITE(VGACNTRL, VGA_DISP_DISABLE);
293
294 /* Disable dpll if necessary */
295 dpll = REG_READ(DPLL_CTRL);
296 if ((dpll & DPLL_PWRDN) == 0) {
297 REG_WRITE(DPLL_CTRL, dpll | (DPLL_PWRDN | DPLL_RESET));
298 REG_WRITE(DPLL_DIV_CTRL, 0x00000000);
299 REG_WRITE(DPLL_STATUS, 0x1);
300 }
301 udelay(150);
302
303 /* Reset controller */
304 oaktrail_hdmi_reset(dev);
305
306 /* program and enable dpll */
307 refclk = 25000;
308 oaktrail_hdmi_find_dpll(crtc, adjusted_mode->clock, refclk, &clock);
309
310 /* Set the DPLL */
311 dpll = REG_READ(DPLL_CTRL);
312 dpll &= ~DPLL_PDIV_MASK;
313 dpll &= ~(DPLL_PWRDN | DPLL_RESET);
314 REG_WRITE(DPLL_CTRL, 0x00000008);
315 REG_WRITE(DPLL_DIV_CTRL, ((clock.nf << 6) | clock.nr));
316 REG_WRITE(DPLL_ADJUST, ((clock.nf >> 14) - 1));
317 REG_WRITE(DPLL_CTRL, (dpll | (clock.np << DPLL_PDIV_SHIFT) | DPLL_ENSTAT | DPLL_DITHEN));
318 REG_WRITE(DPLL_UPDATE, 0x80000000);
319 REG_WRITE(DPLL_CLK_ENABLE, 0x80050102);
320 udelay(150);
321
322 /* configure HDMI */
323 HDMI_WRITE(0x1004, 0x1fd);
324 HDMI_WRITE(0x2000, 0x1);
325 HDMI_WRITE(0x2008, 0x0);
326 HDMI_WRITE(0x3130, 0x8);
327 HDMI_WRITE(0x101c, 0x1800810);
328
329 temp = htotal_calculate(adjusted_mode);
330 REG_WRITE(htot_reg, temp);
331 REG_WRITE(hblank_reg, (adjusted_mode->crtc_hblank_start - 1) | ((adjusted_mode->crtc_hblank_end - 1) << 16));
332 REG_WRITE(hsync_reg, (adjusted_mode->crtc_hsync_start - 1) | ((adjusted_mode->crtc_hsync_end - 1) << 16));
333 REG_WRITE(vtot_reg, (adjusted_mode->crtc_vdisplay - 1) | ((adjusted_mode->crtc_vtotal - 1) << 16));
334 REG_WRITE(vblank_reg, (adjusted_mode->crtc_vblank_start - 1) | ((adjusted_mode->crtc_vblank_end - 1) << 16));
335 REG_WRITE(vsync_reg, (adjusted_mode->crtc_vsync_start - 1) | ((adjusted_mode->crtc_vsync_end - 1) << 16));
336 REG_WRITE(pipesrc_reg, ((mode->crtc_hdisplay - 1) << 16) | (mode->crtc_vdisplay - 1));
337
338 REG_WRITE(PCH_HTOTAL_B, (adjusted_mode->crtc_hdisplay - 1) | ((adjusted_mode->crtc_htotal - 1) << 16));
339 REG_WRITE(PCH_HBLANK_B, (adjusted_mode->crtc_hblank_start - 1) | ((adjusted_mode->crtc_hblank_end - 1) << 16));
340 REG_WRITE(PCH_HSYNC_B, (adjusted_mode->crtc_hsync_start - 1) | ((adjusted_mode->crtc_hsync_end - 1) << 16));
341 REG_WRITE(PCH_VTOTAL_B, (adjusted_mode->crtc_vdisplay - 1) | ((adjusted_mode->crtc_vtotal - 1) << 16));
342 REG_WRITE(PCH_VBLANK_B, (adjusted_mode->crtc_vblank_start - 1) | ((adjusted_mode->crtc_vblank_end - 1) << 16));
343 REG_WRITE(PCH_VSYNC_B, (adjusted_mode->crtc_vsync_start - 1) | ((adjusted_mode->crtc_vsync_end - 1) << 16));
344 REG_WRITE(PCH_PIPEBSRC, ((mode->crtc_hdisplay - 1) << 16) | (mode->crtc_vdisplay - 1));
345
346 temp = adjusted_mode->crtc_hblank_end - adjusted_mode->crtc_hblank_start;
347 HDMI_WRITE(HDMI_HBLANK_A, ((adjusted_mode->crtc_hdisplay - 1) << 16) | temp);
348
349 REG_WRITE(dspsize_reg, ((mode->vdisplay - 1) << 16) | (mode->hdisplay - 1));
350 REG_WRITE(dsppos_reg, 0);
351
352 /* Flush the plane changes */
353 {
354 const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
355 crtc_funcs->mode_set_base(crtc, x, y, old_fb);
356 }
357
358 /* Set up the display plane register */
359 dspcntr = REG_READ(dspcntr_reg);
360 dspcntr |= DISPPLANE_GAMMA_ENABLE;
361 dspcntr |= DISPPLANE_SEL_PIPE_B;
362 dspcntr |= DISPLAY_PLANE_ENABLE;
363
364 /* setup pipeconf */
365 pipeconf = REG_READ(pipeconf_reg);
366 pipeconf |= PIPEACONF_ENABLE;
367
368 REG_WRITE(pipeconf_reg, pipeconf);
369 REG_READ(pipeconf_reg);
370
371 REG_WRITE(PCH_PIPEBCONF, pipeconf);
372 REG_READ(PCH_PIPEBCONF);
373 gma_wait_for_vblank(dev);
374
375 REG_WRITE(dspcntr_reg, dspcntr);
376 gma_wait_for_vblank(dev);
377
378 gma_power_end(dev);
379
380 return 0;
381}
382
383void oaktrail_crtc_hdmi_dpms(struct drm_crtc *crtc, int mode)
384{
385 struct drm_device *dev = crtc->dev;
386 u32 temp;
387
388 DRM_DEBUG_KMS("%s %d\n", __func__, mode);
389
390 switch (mode) {
391 case DRM_MODE_DPMS_OFF:
392 REG_WRITE(VGACNTRL, 0x80000000);
393
394 /* Disable plane */
395 temp = REG_READ(DSPBCNTR);
396 if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
397 REG_WRITE(DSPBCNTR, temp & ~DISPLAY_PLANE_ENABLE);
398 REG_READ(DSPBCNTR);
399 /* Flush the plane changes */
400 REG_WRITE(DSPBSURF, REG_READ(DSPBSURF));
401 REG_READ(DSPBSURF);
402 }
403
404 /* Disable pipe B */
405 temp = REG_READ(PIPEBCONF);
406 if ((temp & PIPEACONF_ENABLE) != 0) {
407 REG_WRITE(PIPEBCONF, temp & ~PIPEACONF_ENABLE);
408 REG_READ(PIPEBCONF);
409 }
410
411 /* Disable LNW Pipes, etc */
412 temp = REG_READ(PCH_PIPEBCONF);
413 if ((temp & PIPEACONF_ENABLE) != 0) {
414 REG_WRITE(PCH_PIPEBCONF, temp & ~PIPEACONF_ENABLE);
415 REG_READ(PCH_PIPEBCONF);
416 }
417
418 /* wait for pipe off */
419 udelay(150);
420
421 /* Disable dpll */
422 temp = REG_READ(DPLL_CTRL);
423 if ((temp & DPLL_PWRDN) == 0) {
424 REG_WRITE(DPLL_CTRL, temp | (DPLL_PWRDN | DPLL_RESET));
425 REG_WRITE(DPLL_STATUS, 0x1);
426 }
427
428 /* wait for dpll off */
429 udelay(150);
430
431 break;
432 case DRM_MODE_DPMS_ON:
433 case DRM_MODE_DPMS_STANDBY:
434 case DRM_MODE_DPMS_SUSPEND:
435 /* Enable dpll */
436 temp = REG_READ(DPLL_CTRL);
437 if ((temp & DPLL_PWRDN) != 0) {
438 REG_WRITE(DPLL_CTRL, temp & ~(DPLL_PWRDN | DPLL_RESET));
439 temp = REG_READ(DPLL_CLK_ENABLE);
440 REG_WRITE(DPLL_CLK_ENABLE, temp | DPLL_EN_DISP | DPLL_SEL_HDMI | DPLL_EN_HDMI);
441 REG_READ(DPLL_CLK_ENABLE);
442 }
443 /* wait for dpll warm up */
444 udelay(150);
445
446 /* Enable pipe B */
447 temp = REG_READ(PIPEBCONF);
448 if ((temp & PIPEACONF_ENABLE) == 0) {
449 REG_WRITE(PIPEBCONF, temp | PIPEACONF_ENABLE);
450 REG_READ(PIPEBCONF);
451 }
452
453 /* Enable LNW Pipe B */
454 temp = REG_READ(PCH_PIPEBCONF);
455 if ((temp & PIPEACONF_ENABLE) == 0) {
456 REG_WRITE(PCH_PIPEBCONF, temp | PIPEACONF_ENABLE);
457 REG_READ(PCH_PIPEBCONF);
458 }
459
460 gma_wait_for_vblank(dev);
461
462 /* Enable plane */
463 temp = REG_READ(DSPBCNTR);
464 if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
465 REG_WRITE(DSPBCNTR, temp | DISPLAY_PLANE_ENABLE);
466 /* Flush the plane changes */
467 REG_WRITE(DSPBSURF, REG_READ(DSPBSURF));
468 REG_READ(DSPBSURF);
469 }
470
471 gma_crtc_load_lut(crtc);
472 }
473
474 /* DSPARB */
475 REG_WRITE(DSPARB, 0x00003fbf);
476
477 /* FW1 */
478 REG_WRITE(0x70034, 0x3f880a0a);
479
480 /* FW2 */
481 REG_WRITE(0x70038, 0x0b060808);
482
483 /* FW4 */
484 REG_WRITE(0x70050, 0x08030404);
485
486 /* FW5 */
487 REG_WRITE(0x70054, 0x04040404);
488
489 /* LNC Chicken Bits - Squawk! */
490 REG_WRITE(0x70400, 0x4000);
491
492 return;
493}
494
495static void oaktrail_hdmi_dpms(struct drm_encoder *encoder, int mode)
496{
497 static int dpms_mode = -1;
498
499 struct drm_device *dev = encoder->dev;
500 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
501 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
502 u32 temp;
503
504 if (dpms_mode == mode)
505 return;
506
507 if (mode != DRM_MODE_DPMS_ON)
508 temp = 0x0;
509 else
510 temp = 0x99;
511
512 dpms_mode = mode;
513 HDMI_WRITE(HDMI_VIDEO_REG, temp);
514}
515
516static enum drm_mode_status oaktrail_hdmi_mode_valid(struct drm_connector *connector,
517 struct drm_display_mode *mode)
518{
519 if (mode->clock > 165000)
520 return MODE_CLOCK_HIGH;
521 if (mode->clock < 20000)
522 return MODE_CLOCK_LOW;
523
524 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
525 return MODE_NO_DBLESCAN;
526
527 return MODE_OK;
528}
529
530static enum drm_connector_status
531oaktrail_hdmi_detect(struct drm_connector *connector, bool force)
532{
533 enum drm_connector_status status;
534 struct drm_device *dev = connector->dev;
535 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
536 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
537 u32 temp;
538
539 temp = HDMI_READ(HDMI_HSR);
540 DRM_DEBUG_KMS("HDMI_HSR %x\n", temp);
541
542 if ((temp & HDMI_DETECT_HDP) != 0)
543 status = connector_status_connected;
544 else
545 status = connector_status_disconnected;
546
547 return status;
548}
549
550static const unsigned char raw_edid[] = {
551 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x10, 0xac, 0x2f, 0xa0,
552 0x53, 0x55, 0x33, 0x30, 0x16, 0x13, 0x01, 0x03, 0x0e, 0x3a, 0x24, 0x78,
553 0xea, 0xe9, 0xf5, 0xac, 0x51, 0x30, 0xb4, 0x25, 0x11, 0x50, 0x54, 0xa5,
554 0x4b, 0x00, 0x81, 0x80, 0xa9, 0x40, 0x71, 0x4f, 0xb3, 0x00, 0x01, 0x01,
555 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x28, 0x3c, 0x80, 0xa0, 0x70, 0xb0,
556 0x23, 0x40, 0x30, 0x20, 0x36, 0x00, 0x46, 0x6c, 0x21, 0x00, 0x00, 0x1a,
557 0x00, 0x00, 0x00, 0xff, 0x00, 0x47, 0x4e, 0x37, 0x32, 0x31, 0x39, 0x35,
558 0x52, 0x30, 0x33, 0x55, 0x53, 0x0a, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x44,
559 0x45, 0x4c, 0x4c, 0x20, 0x32, 0x37, 0x30, 0x39, 0x57, 0x0a, 0x20, 0x20,
560 0x00, 0x00, 0x00, 0xfd, 0x00, 0x38, 0x4c, 0x1e, 0x53, 0x11, 0x00, 0x0a,
561 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x8d
562};
563
564static int oaktrail_hdmi_get_modes(struct drm_connector *connector)
565{
566 struct i2c_adapter *i2c_adap;
567 struct edid *edid;
568 int ret = 0;
569
570 /*
571 * FIXME: We need to figure this lot out. In theory we can
572 * read the EDID somehow but I've yet to find working reference
573 * code.
574 */
575 i2c_adap = i2c_get_adapter(3);
576 if (i2c_adap == NULL) {
577 DRM_ERROR("No ddc adapter available!\n");
578 edid = (struct edid *)raw_edid;
579 } else {
580 edid = (struct edid *)raw_edid;
581 /* FIXME ? edid = drm_get_edid(connector, i2c_adap); */
582 }
583
584 if (edid) {
585 drm_connector_update_edid_property(connector, edid);
586 ret = drm_add_edid_modes(connector, edid);
587 }
588 return ret;
589}
590
591static void oaktrail_hdmi_mode_set(struct drm_encoder *encoder,
592 struct drm_display_mode *mode,
593 struct drm_display_mode *adjusted_mode)
594{
595 struct drm_device *dev = encoder->dev;
596
597 oaktrail_hdmi_audio_enable(dev);
598 return;
599}
600
601static void oaktrail_hdmi_destroy(struct drm_connector *connector)
602{
603 return;
604}
605
606static const struct drm_encoder_helper_funcs oaktrail_hdmi_helper_funcs = {
607 .dpms = oaktrail_hdmi_dpms,
608 .prepare = gma_encoder_prepare,
609 .mode_set = oaktrail_hdmi_mode_set,
610 .commit = gma_encoder_commit,
611};
612
613static const struct drm_connector_helper_funcs
614 oaktrail_hdmi_connector_helper_funcs = {
615 .get_modes = oaktrail_hdmi_get_modes,
616 .mode_valid = oaktrail_hdmi_mode_valid,
617 .best_encoder = gma_best_encoder,
618};
619
620static const struct drm_connector_funcs oaktrail_hdmi_connector_funcs = {
621 .dpms = drm_helper_connector_dpms,
622 .detect = oaktrail_hdmi_detect,
623 .fill_modes = drm_helper_probe_single_connector_modes,
624 .destroy = oaktrail_hdmi_destroy,
625};
626
627void oaktrail_hdmi_init(struct drm_device *dev,
628 struct psb_intel_mode_device *mode_dev)
629{
630 struct gma_encoder *gma_encoder;
631 struct gma_connector *gma_connector;
632 struct drm_connector *connector;
633 struct drm_encoder *encoder;
634
635 gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL);
636 if (!gma_encoder)
637 return;
638
639 gma_connector = kzalloc(sizeof(struct gma_connector), GFP_KERNEL);
640 if (!gma_connector)
641 goto failed_connector;
642
643 connector = &gma_connector->base;
644 encoder = &gma_encoder->base;
645 drm_connector_init(dev, connector,
646 &oaktrail_hdmi_connector_funcs,
647 DRM_MODE_CONNECTOR_DVID);
648
649 drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_TMDS);
650
651 gma_connector_attach_encoder(gma_connector, gma_encoder);
652
653 gma_encoder->type = INTEL_OUTPUT_HDMI;
654 drm_encoder_helper_add(encoder, &oaktrail_hdmi_helper_funcs);
655 drm_connector_helper_add(connector, &oaktrail_hdmi_connector_helper_funcs);
656
657 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
658 connector->interlace_allowed = false;
659 connector->doublescan_allowed = false;
660 dev_info(dev->dev, "HDMI initialised.\n");
661
662 return;
663
664failed_connector:
665 kfree(gma_encoder);
666}
667
668void oaktrail_hdmi_setup(struct drm_device *dev)
669{
670 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
671 struct pci_dev *pdev;
672 struct oaktrail_hdmi_dev *hdmi_dev;
673 int ret;
674
675 pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 0x080d, NULL);
676 if (!pdev)
677 return;
678
679 hdmi_dev = kzalloc(sizeof(struct oaktrail_hdmi_dev), GFP_KERNEL);
680 if (!hdmi_dev) {
681 dev_err(dev->dev, "failed to allocate memory\n");
682 goto out;
683 }
684
685
686 ret = pci_enable_device(pdev);
687 if (ret) {
688 dev_err(dev->dev, "failed to enable hdmi controller\n");
689 goto free;
690 }
691
692 hdmi_dev->mmio = pci_resource_start(pdev, 0);
693 hdmi_dev->mmio_len = pci_resource_len(pdev, 0);
694 hdmi_dev->regs = ioremap(hdmi_dev->mmio, hdmi_dev->mmio_len);
695 if (!hdmi_dev->regs) {
696 dev_err(dev->dev, "failed to map hdmi mmio\n");
697 goto free;
698 }
699
700 hdmi_dev->dev = pdev;
701 pci_set_drvdata(pdev, hdmi_dev);
702
703 /* Initialize i2c controller */
704 ret = oaktrail_hdmi_i2c_init(hdmi_dev->dev);
705 if (ret)
706 dev_err(dev->dev, "HDMI I2C initialization failed\n");
707
708 dev_priv->hdmi_priv = hdmi_dev;
709 oaktrail_hdmi_audio_disable(dev);
710
711 dev_info(dev->dev, "HDMI hardware present.\n");
712
713 return;
714
715free:
716 kfree(hdmi_dev);
717out:
718 return;
719}
720
721void oaktrail_hdmi_teardown(struct drm_device *dev)
722{
723 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
724 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
725 struct pci_dev *pdev;
726
727 if (hdmi_dev) {
728 pdev = hdmi_dev->dev;
729 pci_set_drvdata(pdev, NULL);
730 oaktrail_hdmi_i2c_exit(pdev);
731 iounmap(hdmi_dev->regs);
732 kfree(hdmi_dev);
733 pci_dev_put(pdev);
734 }
735}
736
737/* save HDMI register state */
738void oaktrail_hdmi_save(struct drm_device *dev)
739{
740 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
741 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
742 struct psb_state *regs = &dev_priv->regs.psb;
743 struct psb_pipe *pipeb = &dev_priv->regs.pipe[1];
744 int i;
745
746 /* dpll */
747 hdmi_dev->saveDPLL_CTRL = PSB_RVDC32(DPLL_CTRL);
748 hdmi_dev->saveDPLL_DIV_CTRL = PSB_RVDC32(DPLL_DIV_CTRL);
749 hdmi_dev->saveDPLL_ADJUST = PSB_RVDC32(DPLL_ADJUST);
750 hdmi_dev->saveDPLL_UPDATE = PSB_RVDC32(DPLL_UPDATE);
751 hdmi_dev->saveDPLL_CLK_ENABLE = PSB_RVDC32(DPLL_CLK_ENABLE);
752
753 /* pipe B */
754 pipeb->conf = PSB_RVDC32(PIPEBCONF);
755 pipeb->src = PSB_RVDC32(PIPEBSRC);
756 pipeb->htotal = PSB_RVDC32(HTOTAL_B);
757 pipeb->hblank = PSB_RVDC32(HBLANK_B);
758 pipeb->hsync = PSB_RVDC32(HSYNC_B);
759 pipeb->vtotal = PSB_RVDC32(VTOTAL_B);
760 pipeb->vblank = PSB_RVDC32(VBLANK_B);
761 pipeb->vsync = PSB_RVDC32(VSYNC_B);
762
763 hdmi_dev->savePCH_PIPEBCONF = PSB_RVDC32(PCH_PIPEBCONF);
764 hdmi_dev->savePCH_PIPEBSRC = PSB_RVDC32(PCH_PIPEBSRC);
765 hdmi_dev->savePCH_HTOTAL_B = PSB_RVDC32(PCH_HTOTAL_B);
766 hdmi_dev->savePCH_HBLANK_B = PSB_RVDC32(PCH_HBLANK_B);
767 hdmi_dev->savePCH_HSYNC_B = PSB_RVDC32(PCH_HSYNC_B);
768 hdmi_dev->savePCH_VTOTAL_B = PSB_RVDC32(PCH_VTOTAL_B);
769 hdmi_dev->savePCH_VBLANK_B = PSB_RVDC32(PCH_VBLANK_B);
770 hdmi_dev->savePCH_VSYNC_B = PSB_RVDC32(PCH_VSYNC_B);
771
772 /* plane */
773 pipeb->cntr = PSB_RVDC32(DSPBCNTR);
774 pipeb->stride = PSB_RVDC32(DSPBSTRIDE);
775 pipeb->addr = PSB_RVDC32(DSPBBASE);
776 pipeb->surf = PSB_RVDC32(DSPBSURF);
777 pipeb->linoff = PSB_RVDC32(DSPBLINOFF);
778 pipeb->tileoff = PSB_RVDC32(DSPBTILEOFF);
779
780 /* cursor B */
781 regs->saveDSPBCURSOR_CTRL = PSB_RVDC32(CURBCNTR);
782 regs->saveDSPBCURSOR_BASE = PSB_RVDC32(CURBBASE);
783 regs->saveDSPBCURSOR_POS = PSB_RVDC32(CURBPOS);
784
785 /* save palette */
786 for (i = 0; i < 256; i++)
787 pipeb->palette[i] = PSB_RVDC32(PALETTE_B + (i << 2));
788}
789
790/* restore HDMI register state */
791void oaktrail_hdmi_restore(struct drm_device *dev)
792{
793 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
794 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
795 struct psb_state *regs = &dev_priv->regs.psb;
796 struct psb_pipe *pipeb = &dev_priv->regs.pipe[1];
797 int i;
798
799 /* dpll */
800 PSB_WVDC32(hdmi_dev->saveDPLL_CTRL, DPLL_CTRL);
801 PSB_WVDC32(hdmi_dev->saveDPLL_DIV_CTRL, DPLL_DIV_CTRL);
802 PSB_WVDC32(hdmi_dev->saveDPLL_ADJUST, DPLL_ADJUST);
803 PSB_WVDC32(hdmi_dev->saveDPLL_UPDATE, DPLL_UPDATE);
804 PSB_WVDC32(hdmi_dev->saveDPLL_CLK_ENABLE, DPLL_CLK_ENABLE);
805 udelay(150);
806
807 /* pipe */
808 PSB_WVDC32(pipeb->src, PIPEBSRC);
809 PSB_WVDC32(pipeb->htotal, HTOTAL_B);
810 PSB_WVDC32(pipeb->hblank, HBLANK_B);
811 PSB_WVDC32(pipeb->hsync, HSYNC_B);
812 PSB_WVDC32(pipeb->vtotal, VTOTAL_B);
813 PSB_WVDC32(pipeb->vblank, VBLANK_B);
814 PSB_WVDC32(pipeb->vsync, VSYNC_B);
815
816 PSB_WVDC32(hdmi_dev->savePCH_PIPEBSRC, PCH_PIPEBSRC);
817 PSB_WVDC32(hdmi_dev->savePCH_HTOTAL_B, PCH_HTOTAL_B);
818 PSB_WVDC32(hdmi_dev->savePCH_HBLANK_B, PCH_HBLANK_B);
819 PSB_WVDC32(hdmi_dev->savePCH_HSYNC_B, PCH_HSYNC_B);
820 PSB_WVDC32(hdmi_dev->savePCH_VTOTAL_B, PCH_VTOTAL_B);
821 PSB_WVDC32(hdmi_dev->savePCH_VBLANK_B, PCH_VBLANK_B);
822 PSB_WVDC32(hdmi_dev->savePCH_VSYNC_B, PCH_VSYNC_B);
823
824 PSB_WVDC32(pipeb->conf, PIPEBCONF);
825 PSB_WVDC32(hdmi_dev->savePCH_PIPEBCONF, PCH_PIPEBCONF);
826
827 /* plane */
828 PSB_WVDC32(pipeb->linoff, DSPBLINOFF);
829 PSB_WVDC32(pipeb->stride, DSPBSTRIDE);
830 PSB_WVDC32(pipeb->tileoff, DSPBTILEOFF);
831 PSB_WVDC32(pipeb->cntr, DSPBCNTR);
832 PSB_WVDC32(pipeb->surf, DSPBSURF);
833
834 /* cursor B */
835 PSB_WVDC32(regs->saveDSPBCURSOR_CTRL, CURBCNTR);
836 PSB_WVDC32(regs->saveDSPBCURSOR_POS, CURBPOS);
837 PSB_WVDC32(regs->saveDSPBCURSOR_BASE, CURBBASE);
838
839 /* restore palette */
840 for (i = 0; i < 256; i++)
841 PSB_WVDC32(pipeb->palette[i], PALETTE_B + (i << 2));
842}
1/*
2 * Copyright © 2010 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
22 *
23 * Authors:
24 * Li Peng <peng.li@intel.com>
25 */
26
27#include <linux/delay.h>
28
29#include <drm/drm.h>
30#include <drm/drm_simple_kms_helper.h>
31
32#include "psb_drv.h"
33#include "psb_intel_drv.h"
34#include "psb_intel_reg.h"
35
36#define HDMI_READ(reg) readl(hdmi_dev->regs + (reg))
37#define HDMI_WRITE(reg, val) writel(val, hdmi_dev->regs + (reg))
38
39#define HDMI_HCR 0x1000
40#define HCR_ENABLE_HDCP (1 << 5)
41#define HCR_ENABLE_AUDIO (1 << 2)
42#define HCR_ENABLE_PIXEL (1 << 1)
43#define HCR_ENABLE_TMDS (1 << 0)
44
45#define HDMI_HICR 0x1004
46#define HDMI_HSR 0x1008
47#define HDMI_HISR 0x100C
48#define HDMI_DETECT_HDP (1 << 0)
49
50#define HDMI_VIDEO_REG 0x3000
51#define HDMI_UNIT_EN (1 << 7)
52#define HDMI_MODE_OUTPUT (1 << 0)
53#define HDMI_HBLANK_A 0x3100
54
55#define HDMI_AUDIO_CTRL 0x4000
56#define HDMI_ENABLE_AUDIO (1 << 0)
57
58#define PCH_HTOTAL_B 0x3100
59#define PCH_HBLANK_B 0x3104
60#define PCH_HSYNC_B 0x3108
61#define PCH_VTOTAL_B 0x310C
62#define PCH_VBLANK_B 0x3110
63#define PCH_VSYNC_B 0x3114
64#define PCH_PIPEBSRC 0x311C
65
66#define PCH_PIPEB_DSL 0x3800
67#define PCH_PIPEB_SLC 0x3804
68#define PCH_PIPEBCONF 0x3808
69#define PCH_PIPEBSTAT 0x3824
70
71#define CDVO_DFT 0x5000
72#define CDVO_SLEWRATE 0x5004
73#define CDVO_STRENGTH 0x5008
74#define CDVO_RCOMP 0x500C
75
76#define DPLL_CTRL 0x6000
77#define DPLL_PDIV_SHIFT 16
78#define DPLL_PDIV_MASK (0xf << 16)
79#define DPLL_PWRDN (1 << 4)
80#define DPLL_RESET (1 << 3)
81#define DPLL_FASTEN (1 << 2)
82#define DPLL_ENSTAT (1 << 1)
83#define DPLL_DITHEN (1 << 0)
84
85#define DPLL_DIV_CTRL 0x6004
86#define DPLL_CLKF_MASK 0xffffffc0
87#define DPLL_CLKR_MASK (0x3f)
88
89#define DPLL_CLK_ENABLE 0x6008
90#define DPLL_EN_DISP (1 << 31)
91#define DPLL_SEL_HDMI (1 << 8)
92#define DPLL_EN_HDMI (1 << 1)
93#define DPLL_EN_VGA (1 << 0)
94
95#define DPLL_ADJUST 0x600C
96#define DPLL_STATUS 0x6010
97#define DPLL_UPDATE 0x6014
98#define DPLL_DFT 0x6020
99
100struct intel_range {
101 int min, max;
102};
103
104struct oaktrail_hdmi_limit {
105 struct intel_range vco, np, nr, nf;
106};
107
108struct oaktrail_hdmi_clock {
109 int np;
110 int nr;
111 int nf;
112 int dot;
113};
114
115#define VCO_MIN 320000
116#define VCO_MAX 1650000
117#define NP_MIN 1
118#define NP_MAX 15
119#define NR_MIN 1
120#define NR_MAX 64
121#define NF_MIN 2
122#define NF_MAX 4095
123
124static const struct oaktrail_hdmi_limit oaktrail_hdmi_limit = {
125 .vco = { .min = VCO_MIN, .max = VCO_MAX },
126 .np = { .min = NP_MIN, .max = NP_MAX },
127 .nr = { .min = NR_MIN, .max = NR_MAX },
128 .nf = { .min = NF_MIN, .max = NF_MAX },
129};
130
131static void oaktrail_hdmi_audio_enable(struct drm_device *dev)
132{
133 struct drm_psb_private *dev_priv = dev->dev_private;
134 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
135
136 HDMI_WRITE(HDMI_HCR, 0x67);
137 HDMI_READ(HDMI_HCR);
138
139 HDMI_WRITE(0x51a8, 0x10);
140 HDMI_READ(0x51a8);
141
142 HDMI_WRITE(HDMI_AUDIO_CTRL, 0x1);
143 HDMI_READ(HDMI_AUDIO_CTRL);
144}
145
146static void oaktrail_hdmi_audio_disable(struct drm_device *dev)
147{
148 struct drm_psb_private *dev_priv = dev->dev_private;
149 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
150
151 HDMI_WRITE(0x51a8, 0x0);
152 HDMI_READ(0x51a8);
153
154 HDMI_WRITE(HDMI_AUDIO_CTRL, 0x0);
155 HDMI_READ(HDMI_AUDIO_CTRL);
156
157 HDMI_WRITE(HDMI_HCR, 0x47);
158 HDMI_READ(HDMI_HCR);
159}
160
161static unsigned int htotal_calculate(struct drm_display_mode *mode)
162{
163 u32 new_crtc_htotal;
164
165 /*
166 * 1024 x 768 new_crtc_htotal = 0x1024;
167 * 1280 x 1024 new_crtc_htotal = 0x0c34;
168 */
169 new_crtc_htotal = (mode->crtc_htotal - 1) * 200 * 1000 / mode->clock;
170
171 DRM_DEBUG_KMS("new crtc htotal 0x%4x\n", new_crtc_htotal);
172 return (mode->crtc_hdisplay - 1) | (new_crtc_htotal << 16);
173}
174
175static void oaktrail_hdmi_find_dpll(struct drm_crtc *crtc, int target,
176 int refclk, struct oaktrail_hdmi_clock *best_clock)
177{
178 int np_min, np_max, nr_min, nr_max;
179 int np, nr, nf;
180
181 np_min = DIV_ROUND_UP(oaktrail_hdmi_limit.vco.min, target * 10);
182 np_max = oaktrail_hdmi_limit.vco.max / (target * 10);
183 if (np_min < oaktrail_hdmi_limit.np.min)
184 np_min = oaktrail_hdmi_limit.np.min;
185 if (np_max > oaktrail_hdmi_limit.np.max)
186 np_max = oaktrail_hdmi_limit.np.max;
187
188 nr_min = DIV_ROUND_UP((refclk * 1000), (target * 10 * np_max));
189 nr_max = DIV_ROUND_UP((refclk * 1000), (target * 10 * np_min));
190 if (nr_min < oaktrail_hdmi_limit.nr.min)
191 nr_min = oaktrail_hdmi_limit.nr.min;
192 if (nr_max > oaktrail_hdmi_limit.nr.max)
193 nr_max = oaktrail_hdmi_limit.nr.max;
194
195 np = DIV_ROUND_UP((refclk * 1000), (target * 10 * nr_max));
196 nr = DIV_ROUND_UP((refclk * 1000), (target * 10 * np));
197 nf = DIV_ROUND_CLOSEST((target * 10 * np * nr), refclk);
198 DRM_DEBUG_KMS("np, nr, nf %d %d %d\n", np, nr, nf);
199
200 /*
201 * 1024 x 768 np = 1; nr = 0x26; nf = 0x0fd8000;
202 * 1280 x 1024 np = 1; nr = 0x17; nf = 0x1034000;
203 */
204 best_clock->np = np;
205 best_clock->nr = nr - 1;
206 best_clock->nf = (nf << 14);
207}
208
209static void scu_busy_loop(void __iomem *scu_base)
210{
211 u32 status = 0;
212 u32 loop_count = 0;
213
214 status = readl(scu_base + 0x04);
215 while (status & 1) {
216 udelay(1); /* scu processing time is in few u secods */
217 status = readl(scu_base + 0x04);
218 loop_count++;
219 /* break if scu doesn't reset busy bit after huge retry */
220 if (loop_count > 1000) {
221 DRM_DEBUG_KMS("SCU IPC timed out");
222 return;
223 }
224 }
225}
226
227/*
228 * You don't want to know, you really really don't want to know....
229 *
230 * This is magic. However it's safe magic because of the way the platform
231 * works and it is necessary magic.
232 */
233static void oaktrail_hdmi_reset(struct drm_device *dev)
234{
235 void __iomem *base;
236 unsigned long scu_ipc_mmio = 0xff11c000UL;
237 int scu_len = 1024;
238
239 base = ioremap((resource_size_t)scu_ipc_mmio, scu_len);
240 if (base == NULL) {
241 DRM_ERROR("failed to map scu mmio\n");
242 return;
243 }
244
245 /* scu ipc: assert hdmi controller reset */
246 writel(0xff11d118, base + 0x0c);
247 writel(0x7fffffdf, base + 0x80);
248 writel(0x42005, base + 0x0);
249 scu_busy_loop(base);
250
251 /* scu ipc: de-assert hdmi controller reset */
252 writel(0xff11d118, base + 0x0c);
253 writel(0x7fffffff, base + 0x80);
254 writel(0x42005, base + 0x0);
255 scu_busy_loop(base);
256
257 iounmap(base);
258}
259
260int oaktrail_crtc_hdmi_mode_set(struct drm_crtc *crtc,
261 struct drm_display_mode *mode,
262 struct drm_display_mode *adjusted_mode,
263 int x, int y,
264 struct drm_framebuffer *old_fb)
265{
266 struct drm_device *dev = crtc->dev;
267 struct drm_psb_private *dev_priv = dev->dev_private;
268 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
269 int pipe = 1;
270 int htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B;
271 int hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B;
272 int hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B;
273 int vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B;
274 int vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B;
275 int vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
276 int dspsize_reg = (pipe == 0) ? DSPASIZE : DSPBSIZE;
277 int dsppos_reg = (pipe == 0) ? DSPAPOS : DSPBPOS;
278 int pipesrc_reg = (pipe == 0) ? PIPEASRC : PIPEBSRC;
279 int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
280 int refclk;
281 struct oaktrail_hdmi_clock clock;
282 u32 dspcntr, pipeconf, dpll, temp;
283 int dspcntr_reg = DSPBCNTR;
284
285 if (!gma_power_begin(dev, true))
286 return 0;
287
288 /* Disable the VGA plane that we never use */
289 REG_WRITE(VGACNTRL, VGA_DISP_DISABLE);
290
291 /* Disable dpll if necessary */
292 dpll = REG_READ(DPLL_CTRL);
293 if ((dpll & DPLL_PWRDN) == 0) {
294 REG_WRITE(DPLL_CTRL, dpll | (DPLL_PWRDN | DPLL_RESET));
295 REG_WRITE(DPLL_DIV_CTRL, 0x00000000);
296 REG_WRITE(DPLL_STATUS, 0x1);
297 }
298 udelay(150);
299
300 /* Reset controller */
301 oaktrail_hdmi_reset(dev);
302
303 /* program and enable dpll */
304 refclk = 25000;
305 oaktrail_hdmi_find_dpll(crtc, adjusted_mode->clock, refclk, &clock);
306
307 /* Set the DPLL */
308 dpll = REG_READ(DPLL_CTRL);
309 dpll &= ~DPLL_PDIV_MASK;
310 dpll &= ~(DPLL_PWRDN | DPLL_RESET);
311 REG_WRITE(DPLL_CTRL, 0x00000008);
312 REG_WRITE(DPLL_DIV_CTRL, ((clock.nf << 6) | clock.nr));
313 REG_WRITE(DPLL_ADJUST, ((clock.nf >> 14) - 1));
314 REG_WRITE(DPLL_CTRL, (dpll | (clock.np << DPLL_PDIV_SHIFT) | DPLL_ENSTAT | DPLL_DITHEN));
315 REG_WRITE(DPLL_UPDATE, 0x80000000);
316 REG_WRITE(DPLL_CLK_ENABLE, 0x80050102);
317 udelay(150);
318
319 /* configure HDMI */
320 HDMI_WRITE(0x1004, 0x1fd);
321 HDMI_WRITE(0x2000, 0x1);
322 HDMI_WRITE(0x2008, 0x0);
323 HDMI_WRITE(0x3130, 0x8);
324 HDMI_WRITE(0x101c, 0x1800810);
325
326 temp = htotal_calculate(adjusted_mode);
327 REG_WRITE(htot_reg, temp);
328 REG_WRITE(hblank_reg, (adjusted_mode->crtc_hblank_start - 1) | ((adjusted_mode->crtc_hblank_end - 1) << 16));
329 REG_WRITE(hsync_reg, (adjusted_mode->crtc_hsync_start - 1) | ((adjusted_mode->crtc_hsync_end - 1) << 16));
330 REG_WRITE(vtot_reg, (adjusted_mode->crtc_vdisplay - 1) | ((adjusted_mode->crtc_vtotal - 1) << 16));
331 REG_WRITE(vblank_reg, (adjusted_mode->crtc_vblank_start - 1) | ((adjusted_mode->crtc_vblank_end - 1) << 16));
332 REG_WRITE(vsync_reg, (adjusted_mode->crtc_vsync_start - 1) | ((adjusted_mode->crtc_vsync_end - 1) << 16));
333 REG_WRITE(pipesrc_reg, ((mode->crtc_hdisplay - 1) << 16) | (mode->crtc_vdisplay - 1));
334
335 REG_WRITE(PCH_HTOTAL_B, (adjusted_mode->crtc_hdisplay - 1) | ((adjusted_mode->crtc_htotal - 1) << 16));
336 REG_WRITE(PCH_HBLANK_B, (adjusted_mode->crtc_hblank_start - 1) | ((adjusted_mode->crtc_hblank_end - 1) << 16));
337 REG_WRITE(PCH_HSYNC_B, (adjusted_mode->crtc_hsync_start - 1) | ((adjusted_mode->crtc_hsync_end - 1) << 16));
338 REG_WRITE(PCH_VTOTAL_B, (adjusted_mode->crtc_vdisplay - 1) | ((adjusted_mode->crtc_vtotal - 1) << 16));
339 REG_WRITE(PCH_VBLANK_B, (adjusted_mode->crtc_vblank_start - 1) | ((adjusted_mode->crtc_vblank_end - 1) << 16));
340 REG_WRITE(PCH_VSYNC_B, (adjusted_mode->crtc_vsync_start - 1) | ((adjusted_mode->crtc_vsync_end - 1) << 16));
341 REG_WRITE(PCH_PIPEBSRC, ((mode->crtc_hdisplay - 1) << 16) | (mode->crtc_vdisplay - 1));
342
343 temp = adjusted_mode->crtc_hblank_end - adjusted_mode->crtc_hblank_start;
344 HDMI_WRITE(HDMI_HBLANK_A, ((adjusted_mode->crtc_hdisplay - 1) << 16) | temp);
345
346 REG_WRITE(dspsize_reg, ((mode->vdisplay - 1) << 16) | (mode->hdisplay - 1));
347 REG_WRITE(dsppos_reg, 0);
348
349 /* Flush the plane changes */
350 {
351 const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
352 crtc_funcs->mode_set_base(crtc, x, y, old_fb);
353 }
354
355 /* Set up the display plane register */
356 dspcntr = REG_READ(dspcntr_reg);
357 dspcntr |= DISPPLANE_GAMMA_ENABLE;
358 dspcntr |= DISPPLANE_SEL_PIPE_B;
359 dspcntr |= DISPLAY_PLANE_ENABLE;
360
361 /* setup pipeconf */
362 pipeconf = REG_READ(pipeconf_reg);
363 pipeconf |= PIPEACONF_ENABLE;
364
365 REG_WRITE(pipeconf_reg, pipeconf);
366 REG_READ(pipeconf_reg);
367
368 REG_WRITE(PCH_PIPEBCONF, pipeconf);
369 REG_READ(PCH_PIPEBCONF);
370 gma_wait_for_vblank(dev);
371
372 REG_WRITE(dspcntr_reg, dspcntr);
373 gma_wait_for_vblank(dev);
374
375 gma_power_end(dev);
376
377 return 0;
378}
379
380void oaktrail_crtc_hdmi_dpms(struct drm_crtc *crtc, int mode)
381{
382 struct drm_device *dev = crtc->dev;
383 u32 temp;
384
385 DRM_DEBUG_KMS("%s %d\n", __func__, mode);
386
387 switch (mode) {
388 case DRM_MODE_DPMS_OFF:
389 REG_WRITE(VGACNTRL, 0x80000000);
390
391 /* Disable plane */
392 temp = REG_READ(DSPBCNTR);
393 if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
394 REG_WRITE(DSPBCNTR, temp & ~DISPLAY_PLANE_ENABLE);
395 REG_READ(DSPBCNTR);
396 /* Flush the plane changes */
397 REG_WRITE(DSPBSURF, REG_READ(DSPBSURF));
398 REG_READ(DSPBSURF);
399 }
400
401 /* Disable pipe B */
402 temp = REG_READ(PIPEBCONF);
403 if ((temp & PIPEACONF_ENABLE) != 0) {
404 REG_WRITE(PIPEBCONF, temp & ~PIPEACONF_ENABLE);
405 REG_READ(PIPEBCONF);
406 }
407
408 /* Disable LNW Pipes, etc */
409 temp = REG_READ(PCH_PIPEBCONF);
410 if ((temp & PIPEACONF_ENABLE) != 0) {
411 REG_WRITE(PCH_PIPEBCONF, temp & ~PIPEACONF_ENABLE);
412 REG_READ(PCH_PIPEBCONF);
413 }
414
415 /* wait for pipe off */
416 udelay(150);
417
418 /* Disable dpll */
419 temp = REG_READ(DPLL_CTRL);
420 if ((temp & DPLL_PWRDN) == 0) {
421 REG_WRITE(DPLL_CTRL, temp | (DPLL_PWRDN | DPLL_RESET));
422 REG_WRITE(DPLL_STATUS, 0x1);
423 }
424
425 /* wait for dpll off */
426 udelay(150);
427
428 break;
429 case DRM_MODE_DPMS_ON:
430 case DRM_MODE_DPMS_STANDBY:
431 case DRM_MODE_DPMS_SUSPEND:
432 /* Enable dpll */
433 temp = REG_READ(DPLL_CTRL);
434 if ((temp & DPLL_PWRDN) != 0) {
435 REG_WRITE(DPLL_CTRL, temp & ~(DPLL_PWRDN | DPLL_RESET));
436 temp = REG_READ(DPLL_CLK_ENABLE);
437 REG_WRITE(DPLL_CLK_ENABLE, temp | DPLL_EN_DISP | DPLL_SEL_HDMI | DPLL_EN_HDMI);
438 REG_READ(DPLL_CLK_ENABLE);
439 }
440 /* wait for dpll warm up */
441 udelay(150);
442
443 /* Enable pipe B */
444 temp = REG_READ(PIPEBCONF);
445 if ((temp & PIPEACONF_ENABLE) == 0) {
446 REG_WRITE(PIPEBCONF, temp | PIPEACONF_ENABLE);
447 REG_READ(PIPEBCONF);
448 }
449
450 /* Enable LNW Pipe B */
451 temp = REG_READ(PCH_PIPEBCONF);
452 if ((temp & PIPEACONF_ENABLE) == 0) {
453 REG_WRITE(PCH_PIPEBCONF, temp | PIPEACONF_ENABLE);
454 REG_READ(PCH_PIPEBCONF);
455 }
456
457 gma_wait_for_vblank(dev);
458
459 /* Enable plane */
460 temp = REG_READ(DSPBCNTR);
461 if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
462 REG_WRITE(DSPBCNTR, temp | DISPLAY_PLANE_ENABLE);
463 /* Flush the plane changes */
464 REG_WRITE(DSPBSURF, REG_READ(DSPBSURF));
465 REG_READ(DSPBSURF);
466 }
467
468 gma_crtc_load_lut(crtc);
469 }
470
471 /* DSPARB */
472 REG_WRITE(DSPARB, 0x00003fbf);
473
474 /* FW1 */
475 REG_WRITE(0x70034, 0x3f880a0a);
476
477 /* FW2 */
478 REG_WRITE(0x70038, 0x0b060808);
479
480 /* FW4 */
481 REG_WRITE(0x70050, 0x08030404);
482
483 /* FW5 */
484 REG_WRITE(0x70054, 0x04040404);
485
486 /* LNC Chicken Bits - Squawk! */
487 REG_WRITE(0x70400, 0x4000);
488
489 return;
490}
491
492static void oaktrail_hdmi_dpms(struct drm_encoder *encoder, int mode)
493{
494 static int dpms_mode = -1;
495
496 struct drm_device *dev = encoder->dev;
497 struct drm_psb_private *dev_priv = dev->dev_private;
498 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
499 u32 temp;
500
501 if (dpms_mode == mode)
502 return;
503
504 if (mode != DRM_MODE_DPMS_ON)
505 temp = 0x0;
506 else
507 temp = 0x99;
508
509 dpms_mode = mode;
510 HDMI_WRITE(HDMI_VIDEO_REG, temp);
511}
512
513static enum drm_mode_status oaktrail_hdmi_mode_valid(struct drm_connector *connector,
514 struct drm_display_mode *mode)
515{
516 if (mode->clock > 165000)
517 return MODE_CLOCK_HIGH;
518 if (mode->clock < 20000)
519 return MODE_CLOCK_LOW;
520
521 if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
522 return MODE_NO_DBLESCAN;
523
524 return MODE_OK;
525}
526
527static enum drm_connector_status
528oaktrail_hdmi_detect(struct drm_connector *connector, bool force)
529{
530 enum drm_connector_status status;
531 struct drm_device *dev = connector->dev;
532 struct drm_psb_private *dev_priv = dev->dev_private;
533 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
534 u32 temp;
535
536 temp = HDMI_READ(HDMI_HSR);
537 DRM_DEBUG_KMS("HDMI_HSR %x\n", temp);
538
539 if ((temp & HDMI_DETECT_HDP) != 0)
540 status = connector_status_connected;
541 else
542 status = connector_status_disconnected;
543
544 return status;
545}
546
547static const unsigned char raw_edid[] = {
548 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x10, 0xac, 0x2f, 0xa0,
549 0x53, 0x55, 0x33, 0x30, 0x16, 0x13, 0x01, 0x03, 0x0e, 0x3a, 0x24, 0x78,
550 0xea, 0xe9, 0xf5, 0xac, 0x51, 0x30, 0xb4, 0x25, 0x11, 0x50, 0x54, 0xa5,
551 0x4b, 0x00, 0x81, 0x80, 0xa9, 0x40, 0x71, 0x4f, 0xb3, 0x00, 0x01, 0x01,
552 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x28, 0x3c, 0x80, 0xa0, 0x70, 0xb0,
553 0x23, 0x40, 0x30, 0x20, 0x36, 0x00, 0x46, 0x6c, 0x21, 0x00, 0x00, 0x1a,
554 0x00, 0x00, 0x00, 0xff, 0x00, 0x47, 0x4e, 0x37, 0x32, 0x31, 0x39, 0x35,
555 0x52, 0x30, 0x33, 0x55, 0x53, 0x0a, 0x00, 0x00, 0x00, 0xfc, 0x00, 0x44,
556 0x45, 0x4c, 0x4c, 0x20, 0x32, 0x37, 0x30, 0x39, 0x57, 0x0a, 0x20, 0x20,
557 0x00, 0x00, 0x00, 0xfd, 0x00, 0x38, 0x4c, 0x1e, 0x53, 0x11, 0x00, 0x0a,
558 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x00, 0x8d
559};
560
561static int oaktrail_hdmi_get_modes(struct drm_connector *connector)
562{
563 struct i2c_adapter *i2c_adap;
564 struct edid *edid;
565 int ret = 0;
566
567 /*
568 * FIXME: We need to figure this lot out. In theory we can
569 * read the EDID somehow but I've yet to find working reference
570 * code.
571 */
572 i2c_adap = i2c_get_adapter(3);
573 if (i2c_adap == NULL) {
574 DRM_ERROR("No ddc adapter available!\n");
575 edid = (struct edid *)raw_edid;
576 } else {
577 edid = (struct edid *)raw_edid;
578 /* FIXME ? edid = drm_get_edid(connector, i2c_adap); */
579 }
580
581 if (edid) {
582 drm_connector_update_edid_property(connector, edid);
583 ret = drm_add_edid_modes(connector, edid);
584 }
585 return ret;
586}
587
588static void oaktrail_hdmi_mode_set(struct drm_encoder *encoder,
589 struct drm_display_mode *mode,
590 struct drm_display_mode *adjusted_mode)
591{
592 struct drm_device *dev = encoder->dev;
593
594 oaktrail_hdmi_audio_enable(dev);
595 return;
596}
597
598static void oaktrail_hdmi_destroy(struct drm_connector *connector)
599{
600 return;
601}
602
603static const struct drm_encoder_helper_funcs oaktrail_hdmi_helper_funcs = {
604 .dpms = oaktrail_hdmi_dpms,
605 .prepare = gma_encoder_prepare,
606 .mode_set = oaktrail_hdmi_mode_set,
607 .commit = gma_encoder_commit,
608};
609
610static const struct drm_connector_helper_funcs
611 oaktrail_hdmi_connector_helper_funcs = {
612 .get_modes = oaktrail_hdmi_get_modes,
613 .mode_valid = oaktrail_hdmi_mode_valid,
614 .best_encoder = gma_best_encoder,
615};
616
617static const struct drm_connector_funcs oaktrail_hdmi_connector_funcs = {
618 .dpms = drm_helper_connector_dpms,
619 .detect = oaktrail_hdmi_detect,
620 .fill_modes = drm_helper_probe_single_connector_modes,
621 .destroy = oaktrail_hdmi_destroy,
622};
623
624void oaktrail_hdmi_init(struct drm_device *dev,
625 struct psb_intel_mode_device *mode_dev)
626{
627 struct gma_encoder *gma_encoder;
628 struct gma_connector *gma_connector;
629 struct drm_connector *connector;
630 struct drm_encoder *encoder;
631
632 gma_encoder = kzalloc(sizeof(struct gma_encoder), GFP_KERNEL);
633 if (!gma_encoder)
634 return;
635
636 gma_connector = kzalloc(sizeof(struct gma_connector), GFP_KERNEL);
637 if (!gma_connector)
638 goto failed_connector;
639
640 connector = &gma_connector->base;
641 encoder = &gma_encoder->base;
642 drm_connector_init(dev, connector,
643 &oaktrail_hdmi_connector_funcs,
644 DRM_MODE_CONNECTOR_DVID);
645
646 drm_simple_encoder_init(dev, encoder, DRM_MODE_ENCODER_TMDS);
647
648 gma_connector_attach_encoder(gma_connector, gma_encoder);
649
650 gma_encoder->type = INTEL_OUTPUT_HDMI;
651 drm_encoder_helper_add(encoder, &oaktrail_hdmi_helper_funcs);
652 drm_connector_helper_add(connector, &oaktrail_hdmi_connector_helper_funcs);
653
654 connector->display_info.subpixel_order = SubPixelHorizontalRGB;
655 connector->interlace_allowed = false;
656 connector->doublescan_allowed = false;
657 drm_connector_register(connector);
658 dev_info(dev->dev, "HDMI initialised.\n");
659
660 return;
661
662failed_connector:
663 kfree(gma_encoder);
664}
665
666void oaktrail_hdmi_setup(struct drm_device *dev)
667{
668 struct drm_psb_private *dev_priv = dev->dev_private;
669 struct pci_dev *pdev;
670 struct oaktrail_hdmi_dev *hdmi_dev;
671 int ret;
672
673 pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 0x080d, NULL);
674 if (!pdev)
675 return;
676
677 hdmi_dev = kzalloc(sizeof(struct oaktrail_hdmi_dev), GFP_KERNEL);
678 if (!hdmi_dev) {
679 dev_err(dev->dev, "failed to allocate memory\n");
680 goto out;
681 }
682
683
684 ret = pci_enable_device(pdev);
685 if (ret) {
686 dev_err(dev->dev, "failed to enable hdmi controller\n");
687 goto free;
688 }
689
690 hdmi_dev->mmio = pci_resource_start(pdev, 0);
691 hdmi_dev->mmio_len = pci_resource_len(pdev, 0);
692 hdmi_dev->regs = ioremap(hdmi_dev->mmio, hdmi_dev->mmio_len);
693 if (!hdmi_dev->regs) {
694 dev_err(dev->dev, "failed to map hdmi mmio\n");
695 goto free;
696 }
697
698 hdmi_dev->dev = pdev;
699 pci_set_drvdata(pdev, hdmi_dev);
700
701 /* Initialize i2c controller */
702 ret = oaktrail_hdmi_i2c_init(hdmi_dev->dev);
703 if (ret)
704 dev_err(dev->dev, "HDMI I2C initialization failed\n");
705
706 dev_priv->hdmi_priv = hdmi_dev;
707 oaktrail_hdmi_audio_disable(dev);
708
709 dev_info(dev->dev, "HDMI hardware present.\n");
710
711 return;
712
713free:
714 kfree(hdmi_dev);
715out:
716 return;
717}
718
719void oaktrail_hdmi_teardown(struct drm_device *dev)
720{
721 struct drm_psb_private *dev_priv = dev->dev_private;
722 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
723 struct pci_dev *pdev;
724
725 if (hdmi_dev) {
726 pdev = hdmi_dev->dev;
727 pci_set_drvdata(pdev, NULL);
728 oaktrail_hdmi_i2c_exit(pdev);
729 iounmap(hdmi_dev->regs);
730 kfree(hdmi_dev);
731 pci_dev_put(pdev);
732 }
733}
734
735/* save HDMI register state */
736void oaktrail_hdmi_save(struct drm_device *dev)
737{
738 struct drm_psb_private *dev_priv = dev->dev_private;
739 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
740 struct psb_state *regs = &dev_priv->regs.psb;
741 struct psb_pipe *pipeb = &dev_priv->regs.pipe[1];
742 int i;
743
744 /* dpll */
745 hdmi_dev->saveDPLL_CTRL = PSB_RVDC32(DPLL_CTRL);
746 hdmi_dev->saveDPLL_DIV_CTRL = PSB_RVDC32(DPLL_DIV_CTRL);
747 hdmi_dev->saveDPLL_ADJUST = PSB_RVDC32(DPLL_ADJUST);
748 hdmi_dev->saveDPLL_UPDATE = PSB_RVDC32(DPLL_UPDATE);
749 hdmi_dev->saveDPLL_CLK_ENABLE = PSB_RVDC32(DPLL_CLK_ENABLE);
750
751 /* pipe B */
752 pipeb->conf = PSB_RVDC32(PIPEBCONF);
753 pipeb->src = PSB_RVDC32(PIPEBSRC);
754 pipeb->htotal = PSB_RVDC32(HTOTAL_B);
755 pipeb->hblank = PSB_RVDC32(HBLANK_B);
756 pipeb->hsync = PSB_RVDC32(HSYNC_B);
757 pipeb->vtotal = PSB_RVDC32(VTOTAL_B);
758 pipeb->vblank = PSB_RVDC32(VBLANK_B);
759 pipeb->vsync = PSB_RVDC32(VSYNC_B);
760
761 hdmi_dev->savePCH_PIPEBCONF = PSB_RVDC32(PCH_PIPEBCONF);
762 hdmi_dev->savePCH_PIPEBSRC = PSB_RVDC32(PCH_PIPEBSRC);
763 hdmi_dev->savePCH_HTOTAL_B = PSB_RVDC32(PCH_HTOTAL_B);
764 hdmi_dev->savePCH_HBLANK_B = PSB_RVDC32(PCH_HBLANK_B);
765 hdmi_dev->savePCH_HSYNC_B = PSB_RVDC32(PCH_HSYNC_B);
766 hdmi_dev->savePCH_VTOTAL_B = PSB_RVDC32(PCH_VTOTAL_B);
767 hdmi_dev->savePCH_VBLANK_B = PSB_RVDC32(PCH_VBLANK_B);
768 hdmi_dev->savePCH_VSYNC_B = PSB_RVDC32(PCH_VSYNC_B);
769
770 /* plane */
771 pipeb->cntr = PSB_RVDC32(DSPBCNTR);
772 pipeb->stride = PSB_RVDC32(DSPBSTRIDE);
773 pipeb->addr = PSB_RVDC32(DSPBBASE);
774 pipeb->surf = PSB_RVDC32(DSPBSURF);
775 pipeb->linoff = PSB_RVDC32(DSPBLINOFF);
776 pipeb->tileoff = PSB_RVDC32(DSPBTILEOFF);
777
778 /* cursor B */
779 regs->saveDSPBCURSOR_CTRL = PSB_RVDC32(CURBCNTR);
780 regs->saveDSPBCURSOR_BASE = PSB_RVDC32(CURBBASE);
781 regs->saveDSPBCURSOR_POS = PSB_RVDC32(CURBPOS);
782
783 /* save palette */
784 for (i = 0; i < 256; i++)
785 pipeb->palette[i] = PSB_RVDC32(PALETTE_B + (i << 2));
786}
787
788/* restore HDMI register state */
789void oaktrail_hdmi_restore(struct drm_device *dev)
790{
791 struct drm_psb_private *dev_priv = dev->dev_private;
792 struct oaktrail_hdmi_dev *hdmi_dev = dev_priv->hdmi_priv;
793 struct psb_state *regs = &dev_priv->regs.psb;
794 struct psb_pipe *pipeb = &dev_priv->regs.pipe[1];
795 int i;
796
797 /* dpll */
798 PSB_WVDC32(hdmi_dev->saveDPLL_CTRL, DPLL_CTRL);
799 PSB_WVDC32(hdmi_dev->saveDPLL_DIV_CTRL, DPLL_DIV_CTRL);
800 PSB_WVDC32(hdmi_dev->saveDPLL_ADJUST, DPLL_ADJUST);
801 PSB_WVDC32(hdmi_dev->saveDPLL_UPDATE, DPLL_UPDATE);
802 PSB_WVDC32(hdmi_dev->saveDPLL_CLK_ENABLE, DPLL_CLK_ENABLE);
803 udelay(150);
804
805 /* pipe */
806 PSB_WVDC32(pipeb->src, PIPEBSRC);
807 PSB_WVDC32(pipeb->htotal, HTOTAL_B);
808 PSB_WVDC32(pipeb->hblank, HBLANK_B);
809 PSB_WVDC32(pipeb->hsync, HSYNC_B);
810 PSB_WVDC32(pipeb->vtotal, VTOTAL_B);
811 PSB_WVDC32(pipeb->vblank, VBLANK_B);
812 PSB_WVDC32(pipeb->vsync, VSYNC_B);
813
814 PSB_WVDC32(hdmi_dev->savePCH_PIPEBSRC, PCH_PIPEBSRC);
815 PSB_WVDC32(hdmi_dev->savePCH_HTOTAL_B, PCH_HTOTAL_B);
816 PSB_WVDC32(hdmi_dev->savePCH_HBLANK_B, PCH_HBLANK_B);
817 PSB_WVDC32(hdmi_dev->savePCH_HSYNC_B, PCH_HSYNC_B);
818 PSB_WVDC32(hdmi_dev->savePCH_VTOTAL_B, PCH_VTOTAL_B);
819 PSB_WVDC32(hdmi_dev->savePCH_VBLANK_B, PCH_VBLANK_B);
820 PSB_WVDC32(hdmi_dev->savePCH_VSYNC_B, PCH_VSYNC_B);
821
822 PSB_WVDC32(pipeb->conf, PIPEBCONF);
823 PSB_WVDC32(hdmi_dev->savePCH_PIPEBCONF, PCH_PIPEBCONF);
824
825 /* plane */
826 PSB_WVDC32(pipeb->linoff, DSPBLINOFF);
827 PSB_WVDC32(pipeb->stride, DSPBSTRIDE);
828 PSB_WVDC32(pipeb->tileoff, DSPBTILEOFF);
829 PSB_WVDC32(pipeb->cntr, DSPBCNTR);
830 PSB_WVDC32(pipeb->surf, DSPBSURF);
831
832 /* cursor B */
833 PSB_WVDC32(regs->saveDSPBCURSOR_CTRL, CURBCNTR);
834 PSB_WVDC32(regs->saveDSPBCURSOR_POS, CURBPOS);
835 PSB_WVDC32(regs->saveDSPBCURSOR_BASE, CURBBASE);
836
837 /* restore palette */
838 for (i = 0; i < 256; i++)
839 PSB_WVDC32(pipeb->palette[i], PALETTE_B + (i << 2));
840}