OMAPDSS: hide dss_select_dispc_clk_source()
[linux-omap-dss2:archit-dss2-clone.git] / drivers / video / omap2 / dss / hdmi.c
1 /*
2  * hdmi.c
3  *
4  * HDMI interface DSS driver setting for TI's OMAP4 family of processor.
5  * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
6  * Authors: Yong Zhi
7  *      Mythri pk <mythripk@ti.com>
8  *
9  * This program is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU General Public License version 2 as published by
11  * the Free Software Foundation.
12  *
13  * This program is distributed in the hope that it will be useful, but WITHOUT
14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
16  * more details.
17  *
18  * You should have received a copy of the GNU General Public License along with
19  * this program.  If not, see <http://www.gnu.org/licenses/>.
20  */
21
22 #define DSS_SUBSYS_NAME "HDMI"
23
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/err.h>
27 #include <linux/io.h>
28 #include <linux/interrupt.h>
29 #include <linux/mutex.h>
30 #include <linux/delay.h>
31 #include <linux/string.h>
32 #include <linux/platform_device.h>
33 #include <linux/pm_runtime.h>
34 #include <linux/clk.h>
35 #include <linux/gpio.h>
36 #include <linux/regulator/consumer.h>
37 #include <video/omapdss.h>
38
39 #include "ti_hdmi.h"
40 #include "dss.h"
41 #include "dss_features.h"
42
43 #define HDMI_WP                 0x0
44 #define HDMI_CORE_SYS           0x400
45 #define HDMI_CORE_AV            0x900
46 #define HDMI_PLLCTRL            0x200
47 #define HDMI_PHY                0x300
48
49 /* HDMI EDID Length move this */
50 #define HDMI_EDID_MAX_LENGTH                    256
51 #define EDID_TIMING_DESCRIPTOR_SIZE             0x12
52 #define EDID_DESCRIPTOR_BLOCK0_ADDRESS          0x36
53 #define EDID_DESCRIPTOR_BLOCK1_ADDRESS          0x80
54 #define EDID_SIZE_BLOCK0_TIMING_DESCRIPTOR      4
55 #define EDID_SIZE_BLOCK1_TIMING_DESCRIPTOR      4
56
57 #define HDMI_DEFAULT_REGN 16
58 #define HDMI_DEFAULT_REGM2 1
59
60 static struct {
61         struct mutex lock;
62         struct platform_device *pdev;
63         struct hdmi_ip_data ip_data;
64
65         struct clk *sys_clk;
66         struct regulator *vdda_hdmi_dac_reg;
67
68         int ct_cp_hpd_gpio;
69         int ls_oe_gpio;
70         int hpd_gpio;
71
72         struct omap_dss_output output;
73 } hdmi;
74
75 /*
76  * Logic for the below structure :
77  * user enters the CEA or VESA timings by specifying the HDMI/DVI code.
78  * There is a correspondence between CEA/VESA timing and code, please
79  * refer to section 6.3 in HDMI 1.3 specification for timing code.
80  *
81  * In the below structure, cea_vesa_timings corresponds to all OMAP4
82  * supported CEA and VESA timing values.code_cea corresponds to the CEA
83  * code, It is used to get the timing from cea_vesa_timing array.Similarly
84  * with code_vesa. Code_index is used for back mapping, that is once EDID
85  * is read from the TV, EDID is parsed to find the timing values and then
86  * map it to corresponding CEA or VESA index.
87  */
88
89 static const struct hdmi_config cea_timings[] = {
90         {
91                 { 640, 480, 25200, 96, 16, 48, 2, 10, 33,
92                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
93                         false, },
94                 { 1, HDMI_HDMI },
95         },
96         {
97                 { 720, 480, 27027, 62, 16, 60, 6, 9, 30,
98                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
99                         false, },
100                 { 2, HDMI_HDMI },
101         },
102         {
103                 { 1280, 720, 74250, 40, 110, 220, 5, 5, 20,
104                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
105                         false, },
106                 { 4, HDMI_HDMI },
107         },
108         {
109                 { 1920, 540, 74250, 44, 88, 148, 5, 2, 15,
110                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
111                         true, },
112                 { 5, HDMI_HDMI },
113         },
114         {
115                 { 1440, 240, 27027, 124, 38, 114, 3, 4, 15,
116                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
117                         true, },
118                 { 6, HDMI_HDMI },
119         },
120         {
121                 { 1920, 1080, 148500, 44, 88, 148, 5, 4, 36,
122                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
123                         false, },
124                 { 16, HDMI_HDMI },
125         },
126         {
127                 { 720, 576, 27000, 64, 12, 68, 5, 5, 39,
128                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
129                         false, },
130                 { 17, HDMI_HDMI },
131         },
132         {
133                 { 1280, 720, 74250, 40, 440, 220, 5, 5, 20,
134                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
135                         false, },
136                 { 19, HDMI_HDMI },
137         },
138         {
139                 { 1920, 540, 74250, 44, 528, 148, 5, 2, 15,
140                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
141                         true, },
142                 { 20, HDMI_HDMI },
143         },
144         {
145                 { 1440, 288, 27000, 126, 24, 138, 3, 2, 19,
146                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
147                         true, },
148                 { 21, HDMI_HDMI },
149         },
150         {
151                 { 1440, 576, 54000, 128, 24, 136, 5, 5, 39,
152                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
153                         false, },
154                 { 29, HDMI_HDMI },
155         },
156         {
157                 { 1920, 1080, 148500, 44, 528, 148, 5, 4, 36,
158                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
159                         false, },
160                 { 31, HDMI_HDMI },
161         },
162         {
163                 { 1920, 1080, 74250, 44, 638, 148, 5, 4, 36,
164                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
165                         false, },
166                 { 32, HDMI_HDMI },
167         },
168         {
169                 { 2880, 480, 108108, 248, 64, 240, 6, 9, 30,
170                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
171                         false, },
172                 { 35, HDMI_HDMI },
173         },
174         {
175                 { 2880, 576, 108000, 256, 48, 272, 5, 5, 39,
176                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
177                         false, },
178                 { 37, HDMI_HDMI },
179         },
180 };
181
182 static const struct hdmi_config vesa_timings[] = {
183 /* VESA From Here */
184         {
185                 { 640, 480, 25175, 96, 16, 48, 2, 11, 31,
186                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
187                         false, },
188                 { 4, HDMI_DVI },
189         },
190         {
191                 { 800, 600, 40000, 128, 40, 88, 4, 1, 23,
192                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
193                         false, },
194                 { 9, HDMI_DVI },
195         },
196         {
197                 { 848, 480, 33750, 112, 16, 112, 8, 6, 23,
198                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
199                         false, },
200                 { 0xE, HDMI_DVI },
201         },
202         {
203                 { 1280, 768, 79500, 128, 64, 192, 7, 3, 20,
204                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
205                         false, },
206                 { 0x17, HDMI_DVI },
207         },
208         {
209                 { 1280, 800, 83500, 128, 72, 200, 6, 3, 22,
210                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
211                         false, },
212                 { 0x1C, HDMI_DVI },
213         },
214         {
215                 { 1360, 768, 85500, 112, 64, 256, 6, 3, 18,
216                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
217                         false, },
218                 { 0x27, HDMI_DVI },
219         },
220         {
221                 { 1280, 960, 108000, 112, 96, 312, 3, 1, 36,
222                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
223                         false, },
224                 { 0x20, HDMI_DVI },
225         },
226         {
227                 { 1280, 1024, 108000, 112, 48, 248, 3, 1, 38,
228                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
229                         false, },
230                 { 0x23, HDMI_DVI },
231         },
232         {
233                 { 1024, 768, 65000, 136, 24, 160, 6, 3, 29,
234                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_LOW,
235                         false, },
236                 { 0x10, HDMI_DVI },
237         },
238         {
239                 { 1400, 1050, 121750, 144, 88, 232, 4, 3, 32,
240                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
241                         false, },
242                 { 0x2A, HDMI_DVI },
243         },
244         {
245                 { 1440, 900, 106500, 152, 80, 232, 6, 3, 25,
246                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
247                         false, },
248                 { 0x2F, HDMI_DVI },
249         },
250         {
251                 { 1680, 1050, 146250, 176 , 104, 280, 6, 3, 30,
252                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_LOW,
253                         false, },
254                 { 0x3A, HDMI_DVI },
255         },
256         {
257                 { 1366, 768, 85500, 143, 70, 213, 3, 3, 24,
258                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
259                         false, },
260                 { 0x51, HDMI_DVI },
261         },
262         {
263                 { 1920, 1080, 148500, 44, 148, 80, 5, 4, 36,
264                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
265                         false, },
266                 { 0x52, HDMI_DVI },
267         },
268         {
269                 { 1280, 768, 68250, 32, 48, 80, 7, 3, 12,
270                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH,
271                         false, },
272                 { 0x16, HDMI_DVI },
273         },
274         {
275                 { 1400, 1050, 101000, 32, 48, 80, 4, 3, 23,
276                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH,
277                         false, },
278                 { 0x29, HDMI_DVI },
279         },
280         {
281                 { 1680, 1050, 119000, 32, 48, 80, 6, 3, 21,
282                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH,
283                         false, },
284                 { 0x39, HDMI_DVI },
285         },
286         {
287                 { 1280, 800, 79500, 32, 48, 80, 6, 3, 14,
288                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH,
289                         false, },
290                 { 0x1B, HDMI_DVI },
291         },
292         {
293                 { 1280, 720, 74250, 40, 110, 220, 5, 5, 20,
294                         OMAPDSS_SIG_ACTIVE_HIGH, OMAPDSS_SIG_ACTIVE_HIGH,
295                         false, },
296                 { 0x55, HDMI_DVI },
297         },
298         {
299                 { 1920, 1200, 154000, 32, 48, 80, 6, 3, 26,
300                         OMAPDSS_SIG_ACTIVE_LOW, OMAPDSS_SIG_ACTIVE_HIGH,
301                         false, },
302                 { 0x44, HDMI_DVI },
303         },
304 };
305
306 static int hdmi_runtime_get(void)
307 {
308         int r;
309
310         DSSDBG("hdmi_runtime_get\n");
311
312         r = pm_runtime_get_sync(&hdmi.pdev->dev);
313         WARN_ON(r < 0);
314         if (r < 0)
315                 return r;
316
317         return 0;
318 }
319
320 static void hdmi_runtime_put(void)
321 {
322         int r;
323
324         DSSDBG("hdmi_runtime_put\n");
325
326         r = pm_runtime_put_sync(&hdmi.pdev->dev);
327         WARN_ON(r < 0 && r != -ENOSYS);
328 }
329
330 static int __init hdmi_init_display(struct omap_dss_device *dssdev)
331 {
332         int r;
333
334         struct gpio gpios[] = {
335                 { hdmi.ct_cp_hpd_gpio, GPIOF_OUT_INIT_LOW, "hdmi_ct_cp_hpd" },
336                 { hdmi.ls_oe_gpio, GPIOF_OUT_INIT_LOW, "hdmi_ls_oe" },
337                 { hdmi.hpd_gpio, GPIOF_DIR_IN, "hdmi_hpd" },
338         };
339
340         DSSDBG("init_display\n");
341
342         dss_init_hdmi_ip_ops(&hdmi.ip_data, omapdss_get_version());
343
344         if (hdmi.vdda_hdmi_dac_reg == NULL) {
345                 struct regulator *reg;
346
347                 reg = devm_regulator_get(&hdmi.pdev->dev, "vdda_hdmi_dac");
348
349                 if (IS_ERR(reg)) {
350                         DSSERR("can't get VDDA_HDMI_DAC regulator\n");
351                         return PTR_ERR(reg);
352                 }
353
354                 hdmi.vdda_hdmi_dac_reg = reg;
355         }
356
357         r = gpio_request_array(gpios, ARRAY_SIZE(gpios));
358         if (r)
359                 return r;
360
361         return 0;
362 }
363
364 static void __exit hdmi_uninit_display(struct omap_dss_device *dssdev)
365 {
366         DSSDBG("uninit_display\n");
367
368         gpio_free(hdmi.ct_cp_hpd_gpio);
369         gpio_free(hdmi.ls_oe_gpio);
370         gpio_free(hdmi.hpd_gpio);
371 }
372
373 static const struct hdmi_config *hdmi_find_timing(
374                                         const struct hdmi_config *timings_arr,
375                                         int len)
376 {
377         int i;
378
379         for (i = 0; i < len; i++) {
380                 if (timings_arr[i].cm.code == hdmi.ip_data.cfg.cm.code)
381                         return &timings_arr[i];
382         }
383         return NULL;
384 }
385
386 static const struct hdmi_config *hdmi_get_timings(void)
387 {
388        const struct hdmi_config *arr;
389        int len;
390
391        if (hdmi.ip_data.cfg.cm.mode == HDMI_DVI) {
392                arr = vesa_timings;
393                len = ARRAY_SIZE(vesa_timings);
394        } else {
395                arr = cea_timings;
396                len = ARRAY_SIZE(cea_timings);
397        }
398
399        return hdmi_find_timing(arr, len);
400 }
401
402 static bool hdmi_timings_compare(struct omap_video_timings *timing1,
403                                 const struct omap_video_timings *timing2)
404 {
405         int timing1_vsync, timing1_hsync, timing2_vsync, timing2_hsync;
406
407         if ((DIV_ROUND_CLOSEST(timing2->pixel_clock, 1000) ==
408                         DIV_ROUND_CLOSEST(timing1->pixel_clock, 1000)) &&
409                 (timing2->x_res == timing1->x_res) &&
410                 (timing2->y_res == timing1->y_res)) {
411
412                 timing2_hsync = timing2->hfp + timing2->hsw + timing2->hbp;
413                 timing1_hsync = timing1->hfp + timing1->hsw + timing1->hbp;
414                 timing2_vsync = timing2->vfp + timing2->vsw + timing2->vbp;
415                 timing1_vsync = timing2->vfp + timing2->vsw + timing2->vbp;
416
417                 DSSDBG("timing1_hsync = %d timing1_vsync = %d"\
418                         "timing2_hsync = %d timing2_vsync = %d\n",
419                         timing1_hsync, timing1_vsync,
420                         timing2_hsync, timing2_vsync);
421
422                 if ((timing1_hsync == timing2_hsync) &&
423                         (timing1_vsync == timing2_vsync)) {
424                         return true;
425                 }
426         }
427         return false;
428 }
429
430 static struct hdmi_cm hdmi_get_code(struct omap_video_timings *timing)
431 {
432         int i;
433         struct hdmi_cm cm = {-1};
434         DSSDBG("hdmi_get_code\n");
435
436         for (i = 0; i < ARRAY_SIZE(cea_timings); i++) {
437                 if (hdmi_timings_compare(timing, &cea_timings[i].timings)) {
438                         cm = cea_timings[i].cm;
439                         goto end;
440                 }
441         }
442         for (i = 0; i < ARRAY_SIZE(vesa_timings); i++) {
443                 if (hdmi_timings_compare(timing, &vesa_timings[i].timings)) {
444                         cm = vesa_timings[i].cm;
445                         goto end;
446                 }
447         }
448
449 end:    return cm;
450
451 }
452
453 unsigned long hdmi_get_pixel_clock(void)
454 {
455         /* HDMI Pixel Clock in Mhz */
456         return hdmi.ip_data.cfg.timings.pixel_clock * 1000;
457 }
458
459 static void hdmi_compute_pll(struct omap_dss_device *dssdev, int phy,
460                 struct hdmi_pll_info *pi)
461 {
462         unsigned long clkin, refclk;
463         u32 mf;
464
465         clkin = clk_get_rate(hdmi.sys_clk) / 10000;
466         /*
467          * Input clock is predivided by N + 1
468          * out put of which is reference clk
469          */
470         if (dssdev->clocks.hdmi.regn == 0)
471                 pi->regn = HDMI_DEFAULT_REGN;
472         else
473                 pi->regn = dssdev->clocks.hdmi.regn;
474
475         refclk = clkin / pi->regn;
476
477         if (dssdev->clocks.hdmi.regm2 == 0)
478                 pi->regm2 = HDMI_DEFAULT_REGM2;
479         else
480                 pi->regm2 = dssdev->clocks.hdmi.regm2;
481
482         /*
483          * multiplier is pixel_clk/ref_clk
484          * Multiplying by 100 to avoid fractional part removal
485          */
486         pi->regm = phy * pi->regm2 / refclk;
487
488         /*
489          * fractional multiplier is remainder of the difference between
490          * multiplier and actual phy(required pixel clock thus should be
491          * multiplied by 2^18(262144) divided by the reference clock
492          */
493         mf = (phy - pi->regm / pi->regm2 * refclk) * 262144;
494         pi->regmf = pi->regm2 * mf / refclk;
495
496         /*
497          * Dcofreq should be set to 1 if required pixel clock
498          * is greater than 1000MHz
499          */
500         pi->dcofreq = phy > 1000 * 100;
501         pi->regsd = ((pi->regm * clkin / 10) / (pi->regn * 250) + 5) / 10;
502
503         /* Set the reference clock to sysclk reference */
504         pi->refsel = HDMI_REFSEL_SYSCLK;
505
506         DSSDBG("M = %d Mf = %d\n", pi->regm, pi->regmf);
507         DSSDBG("range = %d sd = %d\n", pi->dcofreq, pi->regsd);
508 }
509
510 static int hdmi_power_on_core(struct omap_dss_device *dssdev)
511 {
512         int r;
513
514         gpio_set_value(hdmi.ct_cp_hpd_gpio, 1);
515         gpio_set_value(hdmi.ls_oe_gpio, 1);
516
517         /* wait 300us after CT_CP_HPD for the 5V power output to reach 90% */
518         udelay(300);
519
520         r = regulator_enable(hdmi.vdda_hdmi_dac_reg);
521         if (r)
522                 goto err_vdac_enable;
523
524         r = hdmi_runtime_get();
525         if (r)
526                 goto err_runtime_get;
527
528         /* Make selection of HDMI in DSS */
529         dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
530
531         return 0;
532
533 err_runtime_get:
534         regulator_disable(hdmi.vdda_hdmi_dac_reg);
535 err_vdac_enable:
536         gpio_set_value(hdmi.ct_cp_hpd_gpio, 0);
537         gpio_set_value(hdmi.ls_oe_gpio, 0);
538         return r;
539 }
540
541 static void hdmi_power_off_core(struct omap_dss_device *dssdev)
542 {
543         hdmi_runtime_put();
544         regulator_disable(hdmi.vdda_hdmi_dac_reg);
545         gpio_set_value(hdmi.ct_cp_hpd_gpio, 0);
546         gpio_set_value(hdmi.ls_oe_gpio, 0);
547 }
548
549 static int hdmi_power_on_full(struct omap_dss_device *dssdev)
550 {
551         int r;
552         struct omap_video_timings *p;
553         struct omap_overlay_manager *mgr = dssdev->output->manager;
554         unsigned long phy;
555
556         r = hdmi_power_on_core(dssdev);
557         if (r)
558                 return r;
559
560         dss_mgr_disable(mgr);
561
562         p = &hdmi.ip_data.cfg.timings;
563
564         DSSDBG("hdmi_power_on x_res= %d y_res = %d\n", p->x_res, p->y_res);
565
566         phy = p->pixel_clock;
567
568         hdmi_compute_pll(dssdev, phy, &hdmi.ip_data.pll_data);
569
570         hdmi.ip_data.ops->video_disable(&hdmi.ip_data);
571
572         /* config the PLL and PHY hdmi_set_pll_pwrfirst */
573         r = hdmi.ip_data.ops->pll_enable(&hdmi.ip_data);
574         if (r) {
575                 DSSDBG("Failed to lock PLL\n");
576                 goto err_pll_enable;
577         }
578
579         r = hdmi.ip_data.ops->phy_enable(&hdmi.ip_data);
580         if (r) {
581                 DSSDBG("Failed to start PHY\n");
582                 goto err_phy_enable;
583         }
584
585         hdmi.ip_data.ops->video_configure(&hdmi.ip_data);
586
587         /* bypass TV gamma table */
588         dispc_enable_gamma_table(0);
589
590         /* tv size */
591         dss_mgr_set_timings(mgr, p);
592
593         r = hdmi.ip_data.ops->video_enable(&hdmi.ip_data);
594         if (r)
595                 goto err_vid_enable;
596
597         r = dss_mgr_enable(mgr);
598         if (r)
599                 goto err_mgr_enable;
600
601         return 0;
602
603 err_mgr_enable:
604         hdmi.ip_data.ops->video_disable(&hdmi.ip_data);
605 err_vid_enable:
606         hdmi.ip_data.ops->phy_disable(&hdmi.ip_data);
607 err_phy_enable:
608         hdmi.ip_data.ops->pll_disable(&hdmi.ip_data);
609 err_pll_enable:
610         hdmi_power_off_core(dssdev);
611         return -EIO;
612 }
613
614 static void hdmi_power_off_full(struct omap_dss_device *dssdev)
615 {
616         struct omap_overlay_manager *mgr = dssdev->output->manager;
617
618         dss_mgr_disable(mgr);
619
620         hdmi.ip_data.ops->video_disable(&hdmi.ip_data);
621         hdmi.ip_data.ops->phy_disable(&hdmi.ip_data);
622         hdmi.ip_data.ops->pll_disable(&hdmi.ip_data);
623
624         hdmi_power_off_core(dssdev);
625 }
626
627 int omapdss_hdmi_display_check_timing(struct omap_dss_device *dssdev,
628                                         struct omap_video_timings *timings)
629 {
630         struct hdmi_cm cm;
631
632         cm = hdmi_get_code(timings);
633         if (cm.code == -1) {
634                 return -EINVAL;
635         }
636
637         return 0;
638
639 }
640
641 void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev,
642                 struct omap_video_timings *timings)
643 {
644         struct hdmi_cm cm;
645         const struct hdmi_config *t;
646
647         mutex_lock(&hdmi.lock);
648
649         cm = hdmi_get_code(timings);
650         hdmi.ip_data.cfg.cm = cm;
651
652         t = hdmi_get_timings();
653         if (t != NULL)
654                 hdmi.ip_data.cfg = *t;
655
656         mutex_unlock(&hdmi.lock);
657 }
658
659 static void hdmi_dump_regs(struct seq_file *s)
660 {
661         mutex_lock(&hdmi.lock);
662
663         if (hdmi_runtime_get()) {
664                 mutex_unlock(&hdmi.lock);
665                 return;
666         }
667
668         hdmi.ip_data.ops->dump_wrapper(&hdmi.ip_data, s);
669         hdmi.ip_data.ops->dump_pll(&hdmi.ip_data, s);
670         hdmi.ip_data.ops->dump_phy(&hdmi.ip_data, s);
671         hdmi.ip_data.ops->dump_core(&hdmi.ip_data, s);
672
673         hdmi_runtime_put();
674         mutex_unlock(&hdmi.lock);
675 }
676
677 int omapdss_hdmi_read_edid(u8 *buf, int len)
678 {
679         int r;
680
681         mutex_lock(&hdmi.lock);
682
683         r = hdmi_runtime_get();
684         BUG_ON(r);
685
686         r = hdmi.ip_data.ops->read_edid(&hdmi.ip_data, buf, len);
687
688         hdmi_runtime_put();
689         mutex_unlock(&hdmi.lock);
690
691         return r;
692 }
693
694 bool omapdss_hdmi_detect(void)
695 {
696         int r;
697
698         mutex_lock(&hdmi.lock);
699
700         r = hdmi_runtime_get();
701         BUG_ON(r);
702
703         r = hdmi.ip_data.ops->detect(&hdmi.ip_data);
704
705         hdmi_runtime_put();
706         mutex_unlock(&hdmi.lock);
707
708         return r == 1;
709 }
710
711 int omapdss_hdmi_display_enable(struct omap_dss_device *dssdev)
712 {
713         struct omap_dss_output *out = dssdev->output;
714         int r = 0;
715
716         DSSDBG("ENTER hdmi_display_enable\n");
717
718         mutex_lock(&hdmi.lock);
719
720         if (out == NULL || out->manager == NULL) {
721                 DSSERR("failed to enable display: no output/manager\n");
722                 r = -ENODEV;
723                 goto err0;
724         }
725
726         hdmi.ip_data.hpd_gpio = hdmi.hpd_gpio;
727
728         r = omap_dss_start_device(dssdev);
729         if (r) {
730                 DSSERR("failed to start device\n");
731                 goto err0;
732         }
733
734         r = hdmi_power_on_full(dssdev);
735         if (r) {
736                 DSSERR("failed to power on device\n");
737                 goto err1;
738         }
739
740         mutex_unlock(&hdmi.lock);
741         return 0;
742
743 err1:
744         omap_dss_stop_device(dssdev);
745 err0:
746         mutex_unlock(&hdmi.lock);
747         return r;
748 }
749
750 void omapdss_hdmi_display_disable(struct omap_dss_device *dssdev)
751 {
752         DSSDBG("Enter hdmi_display_disable\n");
753
754         mutex_lock(&hdmi.lock);
755
756         hdmi_power_off_full(dssdev);
757
758         omap_dss_stop_device(dssdev);
759
760         mutex_unlock(&hdmi.lock);
761 }
762
763 int omapdss_hdmi_core_enable(struct omap_dss_device *dssdev)
764 {
765         int r = 0;
766
767         DSSDBG("ENTER omapdss_hdmi_core_enable\n");
768
769         mutex_lock(&hdmi.lock);
770
771         hdmi.ip_data.hpd_gpio = hdmi.hpd_gpio;
772
773         r = hdmi_power_on_core(dssdev);
774         if (r) {
775                 DSSERR("failed to power on device\n");
776                 goto err0;
777         }
778
779         mutex_unlock(&hdmi.lock);
780         return 0;
781
782 err0:
783         mutex_unlock(&hdmi.lock);
784         return r;
785 }
786
787 void omapdss_hdmi_core_disable(struct omap_dss_device *dssdev)
788 {
789         DSSDBG("Enter omapdss_hdmi_core_disable\n");
790
791         mutex_lock(&hdmi.lock);
792
793         hdmi_power_off_core(dssdev);
794
795         mutex_unlock(&hdmi.lock);
796 }
797
798 static int hdmi_get_clocks(struct platform_device *pdev)
799 {
800         struct clk *clk;
801
802         clk = clk_get(&pdev->dev, "sys_clk");
803         if (IS_ERR(clk)) {
804                 DSSERR("can't get sys_clk\n");
805                 return PTR_ERR(clk);
806         }
807
808         hdmi.sys_clk = clk;
809
810         return 0;
811 }
812
813 static void hdmi_put_clocks(void)
814 {
815         if (hdmi.sys_clk)
816                 clk_put(hdmi.sys_clk);
817 }
818
819 #if defined(CONFIG_OMAP4_DSS_HDMI_AUDIO)
820 int hdmi_compute_acr(u32 sample_freq, u32 *n, u32 *cts)
821 {
822         u32 deep_color;
823         bool deep_color_correct = false;
824         u32 pclk = hdmi.ip_data.cfg.timings.pixel_clock;
825
826         if (n == NULL || cts == NULL)
827                 return -EINVAL;
828
829         /* TODO: When implemented, query deep color mode here. */
830         deep_color = 100;
831
832         /*
833          * When using deep color, the default N value (as in the HDMI
834          * specification) yields to an non-integer CTS. Hence, we
835          * modify it while keeping the restrictions described in
836          * section 7.2.1 of the HDMI 1.4a specification.
837          */
838         switch (sample_freq) {
839         case 32000:
840         case 48000:
841         case 96000:
842         case 192000:
843                 if (deep_color == 125)
844                         if (pclk == 27027 || pclk == 74250)
845                                 deep_color_correct = true;
846                 if (deep_color == 150)
847                         if (pclk == 27027)
848                                 deep_color_correct = true;
849                 break;
850         case 44100:
851         case 88200:
852         case 176400:
853                 if (deep_color == 125)
854                         if (pclk == 27027)
855                                 deep_color_correct = true;
856                 break;
857         default:
858                 return -EINVAL;
859         }
860
861         if (deep_color_correct) {
862                 switch (sample_freq) {
863                 case 32000:
864                         *n = 8192;
865                         break;
866                 case 44100:
867                         *n = 12544;
868                         break;
869                 case 48000:
870                         *n = 8192;
871                         break;
872                 case 88200:
873                         *n = 25088;
874                         break;
875                 case 96000:
876                         *n = 16384;
877                         break;
878                 case 176400:
879                         *n = 50176;
880                         break;
881                 case 192000:
882                         *n = 32768;
883                         break;
884                 default:
885                         return -EINVAL;
886                 }
887         } else {
888                 switch (sample_freq) {
889                 case 32000:
890                         *n = 4096;
891                         break;
892                 case 44100:
893                         *n = 6272;
894                         break;
895                 case 48000:
896                         *n = 6144;
897                         break;
898                 case 88200:
899                         *n = 12544;
900                         break;
901                 case 96000:
902                         *n = 12288;
903                         break;
904                 case 176400:
905                         *n = 25088;
906                         break;
907                 case 192000:
908                         *n = 24576;
909                         break;
910                 default:
911                         return -EINVAL;
912                 }
913         }
914         /* Calculate CTS. See HDMI 1.3a or 1.4a specifications */
915         *cts = pclk * (*n / 128) * deep_color / (sample_freq / 10);
916
917         return 0;
918 }
919
920 int hdmi_audio_enable(void)
921 {
922         DSSDBG("audio_enable\n");
923
924         return hdmi.ip_data.ops->audio_enable(&hdmi.ip_data);
925 }
926
927 void hdmi_audio_disable(void)
928 {
929         DSSDBG("audio_disable\n");
930
931         hdmi.ip_data.ops->audio_disable(&hdmi.ip_data);
932 }
933
934 int hdmi_audio_start(void)
935 {
936         DSSDBG("audio_start\n");
937
938         return hdmi.ip_data.ops->audio_start(&hdmi.ip_data);
939 }
940
941 void hdmi_audio_stop(void)
942 {
943         DSSDBG("audio_stop\n");
944
945         hdmi.ip_data.ops->audio_stop(&hdmi.ip_data);
946 }
947
948 bool hdmi_mode_has_audio(void)
949 {
950         if (hdmi.ip_data.cfg.cm.mode == HDMI_HDMI)
951                 return true;
952         else
953                 return false;
954 }
955
956 int hdmi_audio_config(struct omap_dss_audio *audio)
957 {
958         return hdmi.ip_data.ops->audio_config(&hdmi.ip_data, audio);
959 }
960
961 #endif
962
963 static struct omap_dss_device * __init hdmi_find_dssdev(struct platform_device *pdev)
964 {
965         struct omap_dss_board_info *pdata = pdev->dev.platform_data;
966         const char *def_disp_name = omapdss_get_default_display_name();
967         struct omap_dss_device *def_dssdev;
968         int i;
969
970         def_dssdev = NULL;
971
972         for (i = 0; i < pdata->num_devices; ++i) {
973                 struct omap_dss_device *dssdev = pdata->devices[i];
974
975                 if (dssdev->type != OMAP_DISPLAY_TYPE_HDMI)
976                         continue;
977
978                 if (def_dssdev == NULL)
979                         def_dssdev = dssdev;
980
981                 if (def_disp_name != NULL &&
982                                 strcmp(dssdev->name, def_disp_name) == 0) {
983                         def_dssdev = dssdev;
984                         break;
985                 }
986         }
987
988         return def_dssdev;
989 }
990
991 static void __init hdmi_probe_pdata(struct platform_device *pdev)
992 {
993         struct omap_dss_device *plat_dssdev;
994         struct omap_dss_device *dssdev;
995         struct omap_dss_hdmi_data *priv;
996         int r;
997
998         plat_dssdev = hdmi_find_dssdev(pdev);
999
1000         if (!plat_dssdev)
1001                 return;
1002
1003         dssdev = dss_alloc_and_init_device(&pdev->dev);
1004         if (!dssdev)
1005                 return;
1006
1007         dss_copy_device_pdata(dssdev, plat_dssdev);
1008
1009         priv = dssdev->data;
1010
1011         hdmi.ct_cp_hpd_gpio = priv->ct_cp_hpd_gpio;
1012         hdmi.ls_oe_gpio = priv->ls_oe_gpio;
1013         hdmi.hpd_gpio = priv->hpd_gpio;
1014
1015         dssdev->channel = OMAP_DSS_CHANNEL_DIGIT;
1016
1017         r = hdmi_init_display(dssdev);
1018         if (r) {
1019                 DSSERR("device %s init failed: %d\n", dssdev->name, r);
1020                 dss_put_device(dssdev);
1021                 return;
1022         }
1023
1024         r = dss_add_device(dssdev);
1025         if (r) {
1026                 DSSERR("device %s register failed: %d\n", dssdev->name, r);
1027                 dss_put_device(dssdev);
1028                 return;
1029         }
1030 }
1031
1032 static void __init hdmi_init_output(struct platform_device *pdev)
1033 {
1034         struct omap_dss_output *out = &hdmi.output;
1035
1036         out->pdev = pdev;
1037         out->id = OMAP_DSS_OUTPUT_HDMI;
1038         out->type = OMAP_DISPLAY_TYPE_HDMI;
1039
1040         dss_register_output(out);
1041 }
1042
1043 static void __exit hdmi_uninit_output(struct platform_device *pdev)
1044 {
1045         struct omap_dss_output *out = &hdmi.output;
1046
1047         dss_unregister_output(out);
1048 }
1049
1050 /* HDMI HW IP initialisation */
1051 static int __init omapdss_hdmihw_probe(struct platform_device *pdev)
1052 {
1053         struct resource *hdmi_mem;
1054         int r;
1055
1056         hdmi.pdev = pdev;
1057
1058         mutex_init(&hdmi.lock);
1059
1060         hdmi_mem = platform_get_resource(hdmi.pdev, IORESOURCE_MEM, 0);
1061         if (!hdmi_mem) {
1062                 DSSERR("can't get IORESOURCE_MEM HDMI\n");
1063                 return -EINVAL;
1064         }
1065
1066         /* Base address taken from platform */
1067         hdmi.ip_data.base_wp = ioremap(hdmi_mem->start,
1068                                                 resource_size(hdmi_mem));
1069         if (!hdmi.ip_data.base_wp) {
1070                 DSSERR("can't ioremap WP\n");
1071                 return -ENOMEM;
1072         }
1073
1074         r = hdmi_get_clocks(pdev);
1075         if (r) {
1076                 iounmap(hdmi.ip_data.base_wp);
1077                 return r;
1078         }
1079
1080         pm_runtime_enable(&pdev->dev);
1081
1082         hdmi.ip_data.core_sys_offset = HDMI_CORE_SYS;
1083         hdmi.ip_data.core_av_offset = HDMI_CORE_AV;
1084         hdmi.ip_data.pll_offset = HDMI_PLLCTRL;
1085         hdmi.ip_data.phy_offset = HDMI_PHY;
1086
1087         mutex_init(&hdmi.ip_data.lock);
1088
1089         hdmi_panel_init();
1090
1091         dss_debugfs_create_file("hdmi", hdmi_dump_regs);
1092
1093         hdmi_init_output(pdev);
1094
1095         hdmi_probe_pdata(pdev);
1096
1097         return 0;
1098 }
1099
1100 static int __exit hdmi_remove_child(struct device *dev, void *data)
1101 {
1102         struct omap_dss_device *dssdev = to_dss_device(dev);
1103         hdmi_uninit_display(dssdev);
1104         return 0;
1105 }
1106
1107 static int __exit omapdss_hdmihw_remove(struct platform_device *pdev)
1108 {
1109         device_for_each_child(&pdev->dev, NULL, hdmi_remove_child);
1110
1111         dss_unregister_child_devices(&pdev->dev);
1112
1113         hdmi_panel_exit();
1114
1115         hdmi_uninit_output(pdev);
1116
1117         pm_runtime_disable(&pdev->dev);
1118
1119         hdmi_put_clocks();
1120
1121         iounmap(hdmi.ip_data.base_wp);
1122
1123         return 0;
1124 }
1125
1126 static int hdmi_runtime_suspend(struct device *dev)
1127 {
1128         clk_disable_unprepare(hdmi.sys_clk);
1129
1130         dispc_runtime_put();
1131
1132         return 0;
1133 }
1134
1135 static int hdmi_runtime_resume(struct device *dev)
1136 {
1137         int r;
1138
1139         r = dispc_runtime_get();
1140         if (r < 0)
1141                 return r;
1142
1143         clk_prepare_enable(hdmi.sys_clk);
1144
1145         return 0;
1146 }
1147
1148 static const struct dev_pm_ops hdmi_pm_ops = {
1149         .runtime_suspend = hdmi_runtime_suspend,
1150         .runtime_resume = hdmi_runtime_resume,
1151 };
1152
1153 static struct platform_driver omapdss_hdmihw_driver = {
1154         .remove         = __exit_p(omapdss_hdmihw_remove),
1155         .driver         = {
1156                 .name   = "omapdss_hdmi",
1157                 .owner  = THIS_MODULE,
1158                 .pm     = &hdmi_pm_ops,
1159         },
1160 };
1161
1162 int __init hdmi_init_platform_driver(void)
1163 {
1164         return platform_driver_probe(&omapdss_hdmihw_driver, omapdss_hdmihw_probe);
1165 }
1166
1167 void __exit hdmi_uninit_platform_driver(void)
1168 {
1169         platform_driver_unregister(&omapdss_hdmihw_driver);
1170 }