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1/*
2 * Samsung HDMI interface driver
3 *
4 * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
5 *
6 * Tomasz Stanislawski, <t.stanislaws@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published
10 * by the Free Software Foundiation. either version 2 of the License,
11 * or (at your option) any later version
12 */
13
14#ifdef CONFIG_VIDEO_SAMSUNG_S5P_HDMI_DEBUG
15#define DEBUG
16#endif
17
18#include <linux/kernel.h>
19#include <linux/slab.h>
20#include <linux/io.h>
21#include <linux/i2c.h>
22#include <linux/platform_device.h>
23#include <media/v4l2-subdev.h>
24#include <linux/module.h>
25#include <linux/interrupt.h>
26#include <linux/irq.h>
27#include <linux/delay.h>
28#include <linux/bug.h>
29#include <linux/pm_runtime.h>
30#include <linux/clk.h>
31#include <linux/regulator/consumer.h>
32
33#include <media/s5p_hdmi.h>
34#include <media/v4l2-common.h>
35#include <media/v4l2-dev.h>
36#include <media/v4l2-device.h>
37
38#include "regs-hdmi.h"
39
40MODULE_AUTHOR("Tomasz Stanislawski, <t.stanislaws@samsung.com>");
41MODULE_DESCRIPTION("Samsung HDMI");
42MODULE_LICENSE("GPL");
43
44/* default preset configured on probe */
45#define HDMI_DEFAULT_PRESET V4L2_DV_480P59_94
46
47struct hdmi_pulse {
48 u32 beg;
49 u32 end;
50};
51
52struct hdmi_timings {
53 struct hdmi_pulse hact;
54 u32 hsyn_pol; /* 0 - high, 1 - low */
55 struct hdmi_pulse hsyn;
56 u32 interlaced;
57 struct hdmi_pulse vact[2];
58 u32 vsyn_pol; /* 0 - high, 1 - low */
59 u32 vsyn_off;
60 struct hdmi_pulse vsyn[2];
61};
62
63struct hdmi_resources {
64 struct clk *hdmi;
65 struct clk *sclk_hdmi;
66 struct clk *sclk_pixel;
67 struct clk *sclk_hdmiphy;
68 struct clk *hdmiphy;
69 struct regulator_bulk_data *regul_bulk;
70 int regul_count;
71};
72
73struct hdmi_device {
74 /** base address of HDMI registers */
75 void __iomem *regs;
76 /** HDMI interrupt */
77 unsigned int irq;
78 /** pointer to device parent */
79 struct device *dev;
80 /** subdev generated by HDMI device */
81 struct v4l2_subdev sd;
82 /** V4L2 device structure */
83 struct v4l2_device v4l2_dev;
84 /** subdev of HDMIPHY interface */
85 struct v4l2_subdev *phy_sd;
86 /** subdev of MHL interface */
87 struct v4l2_subdev *mhl_sd;
88 /** configuration of current graphic mode */
89 const struct hdmi_timings *cur_conf;
90 /** flag indicating that timings are dirty */
91 int cur_conf_dirty;
92 /** current preset */
93 u32 cur_preset;
94 /** other resources */
95 struct hdmi_resources res;
96};
97
98static struct platform_device_id hdmi_driver_types[] = {
99 {
100 .name = "s5pv210-hdmi",
101 }, {
102 .name = "exynos4-hdmi",
103 }, {
104 /* end node */
105 }
106};
107
108static const struct v4l2_subdev_ops hdmi_sd_ops;
109
110static struct hdmi_device *sd_to_hdmi_dev(struct v4l2_subdev *sd)
111{
112 return container_of(sd, struct hdmi_device, sd);
113}
114
115static inline
116void hdmi_write(struct hdmi_device *hdev, u32 reg_id, u32 value)
117{
118 writel(value, hdev->regs + reg_id);
119}
120
121static inline
122void hdmi_write_mask(struct hdmi_device *hdev, u32 reg_id, u32 value, u32 mask)
123{
124 u32 old = readl(hdev->regs + reg_id);
125 value = (value & mask) | (old & ~mask);
126 writel(value, hdev->regs + reg_id);
127}
128
129static inline
130void hdmi_writeb(struct hdmi_device *hdev, u32 reg_id, u8 value)
131{
132 writeb(value, hdev->regs + reg_id);
133}
134
135static inline
136void hdmi_writebn(struct hdmi_device *hdev, u32 reg_id, int n, u32 value)
137{
138 switch (n) {
139 default:
140 writeb(value >> 24, hdev->regs + reg_id + 12);
141 case 3:
142 writeb(value >> 16, hdev->regs + reg_id + 8);
143 case 2:
144 writeb(value >> 8, hdev->regs + reg_id + 4);
145 case 1:
146 writeb(value >> 0, hdev->regs + reg_id + 0);
147 }
148}
149
150static inline u32 hdmi_read(struct hdmi_device *hdev, u32 reg_id)
151{
152 return readl(hdev->regs + reg_id);
153}
154
155static irqreturn_t hdmi_irq_handler(int irq, void *dev_data)
156{
157 struct hdmi_device *hdev = dev_data;
158 u32 intc_flag;
159
160 (void)irq;
161 intc_flag = hdmi_read(hdev, HDMI_INTC_FLAG);
162 /* clearing flags for HPD plug/unplug */
163 if (intc_flag & HDMI_INTC_FLAG_HPD_UNPLUG) {
164 printk(KERN_INFO "unplugged\n");
165 hdmi_write_mask(hdev, HDMI_INTC_FLAG, ~0,
166 HDMI_INTC_FLAG_HPD_UNPLUG);
167 }
168 if (intc_flag & HDMI_INTC_FLAG_HPD_PLUG) {
169 printk(KERN_INFO "plugged\n");
170 hdmi_write_mask(hdev, HDMI_INTC_FLAG, ~0,
171 HDMI_INTC_FLAG_HPD_PLUG);
172 }
173
174 return IRQ_HANDLED;
175}
176
177static void hdmi_reg_init(struct hdmi_device *hdev)
178{
179 /* enable HPD interrupts */
180 hdmi_write_mask(hdev, HDMI_INTC_CON, ~0, HDMI_INTC_EN_GLOBAL |
181 HDMI_INTC_EN_HPD_PLUG | HDMI_INTC_EN_HPD_UNPLUG);
182 /* choose DVI mode */
183 hdmi_write_mask(hdev, HDMI_MODE_SEL,
184 HDMI_MODE_DVI_EN, HDMI_MODE_MASK);
185 hdmi_write_mask(hdev, HDMI_CON_2, ~0,
186 HDMI_DVI_PERAMBLE_EN | HDMI_DVI_BAND_EN);
187 /* disable bluescreen */
188 hdmi_write_mask(hdev, HDMI_CON_0, 0, HDMI_BLUE_SCR_EN);
189 /* choose bluescreen (fecal) color */
190 hdmi_writeb(hdev, HDMI_BLUE_SCREEN_0, 0x12);
191 hdmi_writeb(hdev, HDMI_BLUE_SCREEN_1, 0x34);
192 hdmi_writeb(hdev, HDMI_BLUE_SCREEN_2, 0x56);
193}
194
195static void hdmi_timing_apply(struct hdmi_device *hdev,
196 const struct hdmi_timings *t)
197{
198 /* setting core registers */
199 hdmi_writebn(hdev, HDMI_H_BLANK_0, 2, t->hact.beg);
200 hdmi_writebn(hdev, HDMI_H_SYNC_GEN_0, 3,
201 (t->hsyn_pol << 20) | (t->hsyn.end << 10) | t->hsyn.beg);
202 hdmi_writeb(hdev, HDMI_VSYNC_POL, t->vsyn_pol);
203 hdmi_writebn(hdev, HDMI_V_BLANK_0, 3,
204 (t->vact[0].beg << 11) | t->vact[0].end);
205 hdmi_writebn(hdev, HDMI_V_SYNC_GEN_1_0, 3,
206 (t->vsyn[0].beg << 12) | t->vsyn[0].end);
207 if (t->interlaced) {
208 u32 vsyn_trans = t->hsyn.beg + t->vsyn_off;
209
210 hdmi_writeb(hdev, HDMI_INT_PRO_MODE, 1);
211 hdmi_writebn(hdev, HDMI_H_V_LINE_0, 3,
212 (t->hact.end << 12) | t->vact[1].end);
213 hdmi_writebn(hdev, HDMI_V_BLANK_F_0, 3,
214 (t->vact[1].end << 11) | t->vact[1].beg);
215 hdmi_writebn(hdev, HDMI_V_SYNC_GEN_2_0, 3,
216 (t->vsyn[1].beg << 12) | t->vsyn[1].end);
217 hdmi_writebn(hdev, HDMI_V_SYNC_GEN_3_0, 3,
218 (vsyn_trans << 12) | vsyn_trans);
219 } else {
220 hdmi_writeb(hdev, HDMI_INT_PRO_MODE, 0);
221 hdmi_writebn(hdev, HDMI_H_V_LINE_0, 3,
222 (t->hact.end << 12) | t->vact[0].end);
223 }
224
225 /* Timing generator registers */
226 hdmi_writebn(hdev, HDMI_TG_H_FSZ_L, 2, t->hact.end);
227 hdmi_writebn(hdev, HDMI_TG_HACT_ST_L, 2, t->hact.beg);
228 hdmi_writebn(hdev, HDMI_TG_HACT_SZ_L, 2, t->hact.end - t->hact.beg);
229 hdmi_writebn(hdev, HDMI_TG_VSYNC_L, 2, t->vsyn[0].beg);
230 hdmi_writebn(hdev, HDMI_TG_VACT_ST_L, 2, t->vact[0].beg);
231 hdmi_writebn(hdev, HDMI_TG_VACT_SZ_L, 2,
232 t->vact[0].end - t->vact[0].beg);
233 hdmi_writebn(hdev, HDMI_TG_VSYNC_TOP_HDMI_L, 2, t->vsyn[0].beg);
234 hdmi_writebn(hdev, HDMI_TG_FIELD_TOP_HDMI_L, 2, t->vsyn[0].beg);
235 if (t->interlaced) {
236 hdmi_write_mask(hdev, HDMI_TG_CMD, ~0, HDMI_TG_FIELD_EN);
237 hdmi_writebn(hdev, HDMI_TG_V_FSZ_L, 2, t->vact[1].end);
238 hdmi_writebn(hdev, HDMI_TG_VSYNC2_L, 2, t->vsyn[1].beg);
239 hdmi_writebn(hdev, HDMI_TG_FIELD_CHG_L, 2, t->vact[0].end);
240 hdmi_writebn(hdev, HDMI_TG_VACT_ST2_L, 2, t->vact[1].beg);
241 hdmi_writebn(hdev, HDMI_TG_VSYNC_BOT_HDMI_L, 2, t->vsyn[1].beg);
242 hdmi_writebn(hdev, HDMI_TG_FIELD_BOT_HDMI_L, 2, t->vsyn[1].beg);
243 } else {
244 hdmi_write_mask(hdev, HDMI_TG_CMD, 0, HDMI_TG_FIELD_EN);
245 hdmi_writebn(hdev, HDMI_TG_V_FSZ_L, 2, t->vact[0].end);
246 }
247}
248
249static int hdmi_conf_apply(struct hdmi_device *hdmi_dev)
250{
251 struct device *dev = hdmi_dev->dev;
252 const struct hdmi_timings *conf = hdmi_dev->cur_conf;
253 struct v4l2_dv_preset preset;
254 int ret;
255
256 dev_dbg(dev, "%s\n", __func__);
257
258 /* skip if conf is already synchronized with HW */
259 if (!hdmi_dev->cur_conf_dirty)
260 return 0;
261
262 /* reset hdmiphy */
263 hdmi_write_mask(hdmi_dev, HDMI_PHY_RSTOUT, ~0, HDMI_PHY_SW_RSTOUT);
264 mdelay(10);
265 hdmi_write_mask(hdmi_dev, HDMI_PHY_RSTOUT, 0, HDMI_PHY_SW_RSTOUT);
266 mdelay(10);
267
268 /* configure presets */
269 preset.preset = hdmi_dev->cur_preset;
270 ret = v4l2_subdev_call(hdmi_dev->phy_sd, video, s_dv_preset, &preset);
271 if (ret) {
272 dev_err(dev, "failed to set preset (%u)\n", preset.preset);
273 return ret;
274 }
275
276 /* resetting HDMI core */
277 hdmi_write_mask(hdmi_dev, HDMI_CORE_RSTOUT, 0, HDMI_CORE_SW_RSTOUT);
278 mdelay(10);
279 hdmi_write_mask(hdmi_dev, HDMI_CORE_RSTOUT, ~0, HDMI_CORE_SW_RSTOUT);
280 mdelay(10);
281
282 hdmi_reg_init(hdmi_dev);
283
284 /* setting core registers */
285 hdmi_timing_apply(hdmi_dev, conf);
286
287 hdmi_dev->cur_conf_dirty = 0;
288
289 return 0;
290}
291
292static void hdmi_dumpregs(struct hdmi_device *hdev, char *prefix)
293{
294#define DUMPREG(reg_id) \
295 dev_dbg(hdev->dev, "%s:" #reg_id " = %08x\n", prefix, \
296 readl(hdev->regs + reg_id))
297
298 dev_dbg(hdev->dev, "%s: ---- CONTROL REGISTERS ----\n", prefix);
299 DUMPREG(HDMI_INTC_FLAG);
300 DUMPREG(HDMI_INTC_CON);
301 DUMPREG(HDMI_HPD_STATUS);
302 DUMPREG(HDMI_PHY_RSTOUT);
303 DUMPREG(HDMI_PHY_VPLL);
304 DUMPREG(HDMI_PHY_CMU);
305 DUMPREG(HDMI_CORE_RSTOUT);
306
307 dev_dbg(hdev->dev, "%s: ---- CORE REGISTERS ----\n", prefix);
308 DUMPREG(HDMI_CON_0);
309 DUMPREG(HDMI_CON_1);
310 DUMPREG(HDMI_CON_2);
311 DUMPREG(HDMI_SYS_STATUS);
312 DUMPREG(HDMI_PHY_STATUS);
313 DUMPREG(HDMI_STATUS_EN);
314 DUMPREG(HDMI_HPD);
315 DUMPREG(HDMI_MODE_SEL);
316 DUMPREG(HDMI_HPD_GEN);
317 DUMPREG(HDMI_DC_CONTROL);
318 DUMPREG(HDMI_VIDEO_PATTERN_GEN);
319
320 dev_dbg(hdev->dev, "%s: ---- CORE SYNC REGISTERS ----\n", prefix);
321 DUMPREG(HDMI_H_BLANK_0);
322 DUMPREG(HDMI_H_BLANK_1);
323 DUMPREG(HDMI_V_BLANK_0);
324 DUMPREG(HDMI_V_BLANK_1);
325 DUMPREG(HDMI_V_BLANK_2);
326 DUMPREG(HDMI_H_V_LINE_0);
327 DUMPREG(HDMI_H_V_LINE_1);
328 DUMPREG(HDMI_H_V_LINE_2);
329 DUMPREG(HDMI_VSYNC_POL);
330 DUMPREG(HDMI_INT_PRO_MODE);
331 DUMPREG(HDMI_V_BLANK_F_0);
332 DUMPREG(HDMI_V_BLANK_F_1);
333 DUMPREG(HDMI_V_BLANK_F_2);
334 DUMPREG(HDMI_H_SYNC_GEN_0);
335 DUMPREG(HDMI_H_SYNC_GEN_1);
336 DUMPREG(HDMI_H_SYNC_GEN_2);
337 DUMPREG(HDMI_V_SYNC_GEN_1_0);
338 DUMPREG(HDMI_V_SYNC_GEN_1_1);
339 DUMPREG(HDMI_V_SYNC_GEN_1_2);
340 DUMPREG(HDMI_V_SYNC_GEN_2_0);
341 DUMPREG(HDMI_V_SYNC_GEN_2_1);
342 DUMPREG(HDMI_V_SYNC_GEN_2_2);
343 DUMPREG(HDMI_V_SYNC_GEN_3_0);
344 DUMPREG(HDMI_V_SYNC_GEN_3_1);
345 DUMPREG(HDMI_V_SYNC_GEN_3_2);
346
347 dev_dbg(hdev->dev, "%s: ---- TG REGISTERS ----\n", prefix);
348 DUMPREG(HDMI_TG_CMD);
349 DUMPREG(HDMI_TG_H_FSZ_L);
350 DUMPREG(HDMI_TG_H_FSZ_H);
351 DUMPREG(HDMI_TG_HACT_ST_L);
352 DUMPREG(HDMI_TG_HACT_ST_H);
353 DUMPREG(HDMI_TG_HACT_SZ_L);
354 DUMPREG(HDMI_TG_HACT_SZ_H);
355 DUMPREG(HDMI_TG_V_FSZ_L);
356 DUMPREG(HDMI_TG_V_FSZ_H);
357 DUMPREG(HDMI_TG_VSYNC_L);
358 DUMPREG(HDMI_TG_VSYNC_H);
359 DUMPREG(HDMI_TG_VSYNC2_L);
360 DUMPREG(HDMI_TG_VSYNC2_H);
361 DUMPREG(HDMI_TG_VACT_ST_L);
362 DUMPREG(HDMI_TG_VACT_ST_H);
363 DUMPREG(HDMI_TG_VACT_SZ_L);
364 DUMPREG(HDMI_TG_VACT_SZ_H);
365 DUMPREG(HDMI_TG_FIELD_CHG_L);
366 DUMPREG(HDMI_TG_FIELD_CHG_H);
367 DUMPREG(HDMI_TG_VACT_ST2_L);
368 DUMPREG(HDMI_TG_VACT_ST2_H);
369 DUMPREG(HDMI_TG_VSYNC_TOP_HDMI_L);
370 DUMPREG(HDMI_TG_VSYNC_TOP_HDMI_H);
371 DUMPREG(HDMI_TG_VSYNC_BOT_HDMI_L);
372 DUMPREG(HDMI_TG_VSYNC_BOT_HDMI_H);
373 DUMPREG(HDMI_TG_FIELD_TOP_HDMI_L);
374 DUMPREG(HDMI_TG_FIELD_TOP_HDMI_H);
375 DUMPREG(HDMI_TG_FIELD_BOT_HDMI_L);
376 DUMPREG(HDMI_TG_FIELD_BOT_HDMI_H);
377#undef DUMPREG
378}
379
380static const struct hdmi_timings hdmi_timings_480p = {
381 .hact = { .beg = 138, .end = 858 },
382 .hsyn_pol = 1,
383 .hsyn = { .beg = 16, .end = 16 + 62 },
384 .interlaced = 0,
385 .vact[0] = { .beg = 42 + 3, .end = 522 + 3 },
386 .vsyn_pol = 1,
387 .vsyn[0] = { .beg = 6 + 3, .end = 12 + 3},
388};
389
390static const struct hdmi_timings hdmi_timings_576p50 = {
391 .hact = { .beg = 144, .end = 864 },
392 .hsyn_pol = 1,
393 .hsyn = { .beg = 12, .end = 12 + 64 },
394 .interlaced = 0,
395 .vact[0] = { .beg = 44 + 5, .end = 620 + 5 },
396 .vsyn_pol = 1,
397 .vsyn[0] = { .beg = 0 + 5, .end = 5 + 5},
398};
399
400static const struct hdmi_timings hdmi_timings_720p60 = {
401 .hact = { .beg = 370, .end = 1650 },
402 .hsyn_pol = 0,
403 .hsyn = { .beg = 110, .end = 110 + 40 },
404 .interlaced = 0,
405 .vact[0] = { .beg = 25 + 5, .end = 745 + 5 },
406 .vsyn_pol = 0,
407 .vsyn[0] = { .beg = 0 + 5, .end = 5 + 5},
408};
409
410static const struct hdmi_timings hdmi_timings_720p50 = {
411 .hact = { .beg = 700, .end = 1980 },
412 .hsyn_pol = 0,
413 .hsyn = { .beg = 440, .end = 440 + 40 },
414 .interlaced = 0,
415 .vact[0] = { .beg = 25 + 5, .end = 745 + 5 },
416 .vsyn_pol = 0,
417 .vsyn[0] = { .beg = 0 + 5, .end = 5 + 5},
418};
419
420static const struct hdmi_timings hdmi_timings_1080p24 = {
421 .hact = { .beg = 830, .end = 2750 },
422 .hsyn_pol = 0,
423 .hsyn = { .beg = 638, .end = 638 + 44 },
424 .interlaced = 0,
425 .vact[0] = { .beg = 41 + 4, .end = 1121 + 4 },
426 .vsyn_pol = 0,
427 .vsyn[0] = { .beg = 0 + 4, .end = 5 + 4},
428};
429
430static const struct hdmi_timings hdmi_timings_1080p60 = {
431 .hact = { .beg = 280, .end = 2200 },
432 .hsyn_pol = 0,
433 .hsyn = { .beg = 88, .end = 88 + 44 },
434 .interlaced = 0,
435 .vact[0] = { .beg = 41 + 4, .end = 1121 + 4 },
436 .vsyn_pol = 0,
437 .vsyn[0] = { .beg = 0 + 4, .end = 5 + 4},
438};
439
440static const struct hdmi_timings hdmi_timings_1080i60 = {
441 .hact = { .beg = 280, .end = 2200 },
442 .hsyn_pol = 0,
443 .hsyn = { .beg = 88, .end = 88 + 44 },
444 .interlaced = 1,
445 .vact[0] = { .beg = 20 + 2, .end = 560 + 2 },
446 .vact[1] = { .beg = 583 + 2, .end = 1123 + 2 },
447 .vsyn_pol = 0,
448 .vsyn_off = 1100,
449 .vsyn[0] = { .beg = 0 + 2, .end = 5 + 2},
450 .vsyn[1] = { .beg = 562 + 2, .end = 567 + 2},
451};
452
453static const struct hdmi_timings hdmi_timings_1080i50 = {
454 .hact = { .beg = 720, .end = 2640 },
455 .hsyn_pol = 0,
456 .hsyn = { .beg = 528, .end = 528 + 44 },
457 .interlaced = 1,
458 .vact[0] = { .beg = 20 + 2, .end = 560 + 2 },
459 .vact[1] = { .beg = 583 + 2, .end = 1123 + 2 },
460 .vsyn_pol = 0,
461 .vsyn_off = 1320,
462 .vsyn[0] = { .beg = 0 + 2, .end = 5 + 2},
463 .vsyn[1] = { .beg = 562 + 2, .end = 567 + 2},
464};
465
466static const struct hdmi_timings hdmi_timings_1080p50 = {
467 .hact = { .beg = 720, .end = 2640 },
468 .hsyn_pol = 0,
469 .hsyn = { .beg = 528, .end = 528 + 44 },
470 .interlaced = 0,
471 .vact[0] = { .beg = 41 + 4, .end = 1121 + 4 },
472 .vsyn_pol = 0,
473 .vsyn[0] = { .beg = 0 + 4, .end = 5 + 4},
474};
475
476static const struct {
477 u32 preset;
478 const struct hdmi_timings *timings;
479} hdmi_timings[] = {
480 { V4L2_DV_480P59_94, &hdmi_timings_480p },
481 { V4L2_DV_576P50, &hdmi_timings_576p50 },
482 { V4L2_DV_720P50, &hdmi_timings_720p50 },
483 { V4L2_DV_720P59_94, &hdmi_timings_720p60 },
484 { V4L2_DV_720P60, &hdmi_timings_720p60 },
485 { V4L2_DV_1080P24, &hdmi_timings_1080p24 },
486 { V4L2_DV_1080P30, &hdmi_timings_1080p60 },
487 { V4L2_DV_1080P50, &hdmi_timings_1080p50 },
488 { V4L2_DV_1080I50, &hdmi_timings_1080i50 },
489 { V4L2_DV_1080I60, &hdmi_timings_1080i60 },
490 { V4L2_DV_1080P60, &hdmi_timings_1080p60 },
491};
492
493static const struct hdmi_timings *hdmi_preset2timings(u32 preset)
494{
495 int i;
496
497 for (i = 0; i < ARRAY_SIZE(hdmi_timings); ++i)
498 if (hdmi_timings[i].preset == preset)
499 return hdmi_timings[i].timings;
500 return NULL;
501}
502
503static int hdmi_streamon(struct hdmi_device *hdev)
504{
505 struct device *dev = hdev->dev;
506 struct hdmi_resources *res = &hdev->res;
507 int ret, tries;
508
509 dev_dbg(dev, "%s\n", __func__);
510
511 ret = hdmi_conf_apply(hdev);
512 if (ret)
513 return ret;
514
515 ret = v4l2_subdev_call(hdev->phy_sd, video, s_stream, 1);
516 if (ret)
517 return ret;
518
519 /* waiting for HDMIPHY's PLL to get to steady state */
520 for (tries = 100; tries; --tries) {
521 u32 val = hdmi_read(hdev, HDMI_PHY_STATUS);
522 if (val & HDMI_PHY_STATUS_READY)
523 break;
524 mdelay(1);
525 }
526 /* steady state not achieved */
527 if (tries == 0) {
528 dev_err(dev, "hdmiphy's pll could not reach steady state.\n");
529 v4l2_subdev_call(hdev->phy_sd, video, s_stream, 0);
530 hdmi_dumpregs(hdev, "hdmiphy - s_stream");
531 return -EIO;
532 }
533
534 /* starting MHL */
535 ret = v4l2_subdev_call(hdev->mhl_sd, video, s_stream, 1);
536 if (hdev->mhl_sd && ret) {
537 v4l2_subdev_call(hdev->phy_sd, video, s_stream, 0);
538 hdmi_dumpregs(hdev, "mhl - s_stream");
539 return -EIO;
540 }
541
542 /* hdmiphy clock is used for HDMI in streaming mode */
543 clk_disable(res->sclk_hdmi);
544 clk_set_parent(res->sclk_hdmi, res->sclk_hdmiphy);
545 clk_enable(res->sclk_hdmi);
546
547 /* enable HDMI and timing generator */
548 hdmi_write_mask(hdev, HDMI_CON_0, ~0, HDMI_EN);
549 hdmi_write_mask(hdev, HDMI_TG_CMD, ~0, HDMI_TG_EN);
550 hdmi_dumpregs(hdev, "streamon");
551 return 0;
552}
553
554static int hdmi_streamoff(struct hdmi_device *hdev)
555{
556 struct device *dev = hdev->dev;
557 struct hdmi_resources *res = &hdev->res;
558
559 dev_dbg(dev, "%s\n", __func__);
560
561 hdmi_write_mask(hdev, HDMI_CON_0, 0, HDMI_EN);
562 hdmi_write_mask(hdev, HDMI_TG_CMD, 0, HDMI_TG_EN);
563
564 /* pixel(vpll) clock is used for HDMI in config mode */
565 clk_disable(res->sclk_hdmi);
566 clk_set_parent(res->sclk_hdmi, res->sclk_pixel);
567 clk_enable(res->sclk_hdmi);
568
569 v4l2_subdev_call(hdev->mhl_sd, video, s_stream, 0);
570 v4l2_subdev_call(hdev->phy_sd, video, s_stream, 0);
571
572 hdmi_dumpregs(hdev, "streamoff");
573 return 0;
574}
575
576static int hdmi_s_stream(struct v4l2_subdev *sd, int enable)
577{
578 struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
579 struct device *dev = hdev->dev;
580
581 dev_dbg(dev, "%s(%d)\n", __func__, enable);
582 if (enable)
583 return hdmi_streamon(hdev);
584 return hdmi_streamoff(hdev);
585}
586
587static void hdmi_resource_poweron(struct hdmi_resources *res)
588{
589 /* turn HDMI power on */
590 regulator_bulk_enable(res->regul_count, res->regul_bulk);
591 /* power-on hdmi physical interface */
592 clk_enable(res->hdmiphy);
593 /* use VPP as parent clock; HDMIPHY is not working yet */
594 clk_set_parent(res->sclk_hdmi, res->sclk_pixel);
595 /* turn clocks on */
596 clk_enable(res->sclk_hdmi);
597}
598
599static void hdmi_resource_poweroff(struct hdmi_resources *res)
600{
601 /* turn clocks off */
602 clk_disable(res->sclk_hdmi);
603 /* power-off hdmiphy */
604 clk_disable(res->hdmiphy);
605 /* turn HDMI power off */
606 regulator_bulk_disable(res->regul_count, res->regul_bulk);
607}
608
609static int hdmi_s_power(struct v4l2_subdev *sd, int on)
610{
611 struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
612 int ret;
613
614 if (on)
615 ret = pm_runtime_get_sync(hdev->dev);
616 else
617 ret = pm_runtime_put_sync(hdev->dev);
618 /* only values < 0 indicate errors */
619 return IS_ERR_VALUE(ret) ? ret : 0;
620}
621
622static int hdmi_s_dv_preset(struct v4l2_subdev *sd,
623 struct v4l2_dv_preset *preset)
624{
625 struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
626 struct device *dev = hdev->dev;
627 const struct hdmi_timings *conf;
628
629 conf = hdmi_preset2timings(preset->preset);
630 if (conf == NULL) {
631 dev_err(dev, "preset (%u) not supported\n", preset->preset);
632 return -EINVAL;
633 }
634 hdev->cur_conf = conf;
635 hdev->cur_conf_dirty = 1;
636 hdev->cur_preset = preset->preset;
637 return 0;
638}
639
640static int hdmi_g_dv_preset(struct v4l2_subdev *sd,
641 struct v4l2_dv_preset *preset)
642{
643 memset(preset, 0, sizeof(*preset));
644 preset->preset = sd_to_hdmi_dev(sd)->cur_preset;
645 return 0;
646}
647
648static int hdmi_g_mbus_fmt(struct v4l2_subdev *sd,
649 struct v4l2_mbus_framefmt *fmt)
650{
651 struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
652 const struct hdmi_timings *t = hdev->cur_conf;
653
654 dev_dbg(hdev->dev, "%s\n", __func__);
655 if (!hdev->cur_conf)
656 return -EINVAL;
657 memset(fmt, 0, sizeof *fmt);
658 fmt->width = t->hact.end - t->hact.beg;
659 fmt->height = t->vact[0].end - t->vact[0].beg;
660 fmt->code = V4L2_MBUS_FMT_FIXED; /* means RGB888 */
661 fmt->colorspace = V4L2_COLORSPACE_SRGB;
662 if (t->interlaced) {
663 fmt->field = V4L2_FIELD_INTERLACED;
664 fmt->height *= 2;
665 } else {
666 fmt->field = V4L2_FIELD_NONE;
667 }
668 return 0;
669}
670
671static int hdmi_enum_dv_presets(struct v4l2_subdev *sd,
672 struct v4l2_dv_enum_preset *preset)
673{
674 if (preset->index >= ARRAY_SIZE(hdmi_timings))
675 return -EINVAL;
676 return v4l_fill_dv_preset_info(hdmi_timings[preset->index].preset,
677 preset);
678}
679
680static const struct v4l2_subdev_core_ops hdmi_sd_core_ops = {
681 .s_power = hdmi_s_power,
682};
683
684static const struct v4l2_subdev_video_ops hdmi_sd_video_ops = {
685 .s_dv_preset = hdmi_s_dv_preset,
686 .g_dv_preset = hdmi_g_dv_preset,
687 .enum_dv_presets = hdmi_enum_dv_presets,
688 .g_mbus_fmt = hdmi_g_mbus_fmt,
689 .s_stream = hdmi_s_stream,
690};
691
692static const struct v4l2_subdev_ops hdmi_sd_ops = {
693 .core = &hdmi_sd_core_ops,
694 .video = &hdmi_sd_video_ops,
695};
696
697static int hdmi_runtime_suspend(struct device *dev)
698{
699 struct v4l2_subdev *sd = dev_get_drvdata(dev);
700 struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
701
702 dev_dbg(dev, "%s\n", __func__);
703 v4l2_subdev_call(hdev->mhl_sd, core, s_power, 0);
704 hdmi_resource_poweroff(&hdev->res);
705 /* flag that device context is lost */
706 hdev->cur_conf_dirty = 1;
707 return 0;
708}
709
710static int hdmi_runtime_resume(struct device *dev)
711{
712 struct v4l2_subdev *sd = dev_get_drvdata(dev);
713 struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
714 int ret = 0;
715
716 dev_dbg(dev, "%s\n", __func__);
717
718 hdmi_resource_poweron(&hdev->res);
719
720 /* starting MHL */
721 ret = v4l2_subdev_call(hdev->mhl_sd, core, s_power, 1);
722 if (hdev->mhl_sd && ret)
723 goto fail;
724
725 dev_dbg(dev, "poweron succeed\n");
726
727 return 0;
728
729fail:
730 hdmi_resource_poweroff(&hdev->res);
731 dev_err(dev, "poweron failed\n");
732
733 return ret;
734}
735
736static const struct dev_pm_ops hdmi_pm_ops = {
737 .runtime_suspend = hdmi_runtime_suspend,
738 .runtime_resume = hdmi_runtime_resume,
739};
740
741static void hdmi_resources_cleanup(struct hdmi_device *hdev)
742{
743 struct hdmi_resources *res = &hdev->res;
744
745 dev_dbg(hdev->dev, "HDMI resource cleanup\n");
746 /* put clocks, power */
747 if (res->regul_count)
748 regulator_bulk_free(res->regul_count, res->regul_bulk);
749 /* kfree is NULL-safe */
750 kfree(res->regul_bulk);
751 if (!IS_ERR_OR_NULL(res->hdmiphy))
752 clk_put(res->hdmiphy);
753 if (!IS_ERR_OR_NULL(res->sclk_hdmiphy))
754 clk_put(res->sclk_hdmiphy);
755 if (!IS_ERR_OR_NULL(res->sclk_pixel))
756 clk_put(res->sclk_pixel);
757 if (!IS_ERR_OR_NULL(res->sclk_hdmi))
758 clk_put(res->sclk_hdmi);
759 if (!IS_ERR_OR_NULL(res->hdmi))
760 clk_put(res->hdmi);
761 memset(res, 0, sizeof *res);
762}
763
764static int hdmi_resources_init(struct hdmi_device *hdev)
765{
766 struct device *dev = hdev->dev;
767 struct hdmi_resources *res = &hdev->res;
768 static char *supply[] = {
769 "hdmi-en",
770 "vdd",
771 "vdd_osc",
772 "vdd_pll",
773 };
774 int i, ret;
775
776 dev_dbg(dev, "HDMI resource init\n");
777
778 memset(res, 0, sizeof *res);
779 /* get clocks, power */
780
781 res->hdmi = clk_get(dev, "hdmi");
782 if (IS_ERR_OR_NULL(res->hdmi)) {
783 dev_err(dev, "failed to get clock 'hdmi'\n");
784 goto fail;
785 }
786 res->sclk_hdmi = clk_get(dev, "sclk_hdmi");
787 if (IS_ERR_OR_NULL(res->sclk_hdmi)) {
788 dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
789 goto fail;
790 }
791 res->sclk_pixel = clk_get(dev, "sclk_pixel");
792 if (IS_ERR_OR_NULL(res->sclk_pixel)) {
793 dev_err(dev, "failed to get clock 'sclk_pixel'\n");
794 goto fail;
795 }
796 res->sclk_hdmiphy = clk_get(dev, "sclk_hdmiphy");
797 if (IS_ERR_OR_NULL(res->sclk_hdmiphy)) {
798 dev_err(dev, "failed to get clock 'sclk_hdmiphy'\n");
799 goto fail;
800 }
801 res->hdmiphy = clk_get(dev, "hdmiphy");
802 if (IS_ERR_OR_NULL(res->hdmiphy)) {
803 dev_err(dev, "failed to get clock 'hdmiphy'\n");
804 goto fail;
805 }
806 res->regul_bulk = kcalloc(ARRAY_SIZE(supply),
807 sizeof(res->regul_bulk[0]), GFP_KERNEL);
808 if (!res->regul_bulk) {
809 dev_err(dev, "failed to get memory for regulators\n");
810 goto fail;
811 }
812 for (i = 0; i < ARRAY_SIZE(supply); ++i) {
813 res->regul_bulk[i].supply = supply[i];
814 res->regul_bulk[i].consumer = NULL;
815 }
816
817 ret = regulator_bulk_get(dev, ARRAY_SIZE(supply), res->regul_bulk);
818 if (ret) {
819 dev_err(dev, "failed to get regulators\n");
820 goto fail;
821 }
822 res->regul_count = ARRAY_SIZE(supply);
823
824 return 0;
825fail:
826 dev_err(dev, "HDMI resource init - failed\n");
827 hdmi_resources_cleanup(hdev);
828 return -ENODEV;
829}
830
831static int __devinit hdmi_probe(struct platform_device *pdev)
832{
833 struct device *dev = &pdev->dev;
834 struct resource *res;
835 struct i2c_adapter *adapter;
836 struct v4l2_subdev *sd;
837 struct hdmi_device *hdmi_dev = NULL;
838 struct s5p_hdmi_platform_data *pdata = dev->platform_data;
839 int ret;
840
841 dev_dbg(dev, "probe start\n");
842
843 if (!pdata) {
844 dev_err(dev, "platform data is missing\n");
845 ret = -ENODEV;
846 goto fail;
847 }
848
849 hdmi_dev = devm_kzalloc(&pdev->dev, sizeof(*hdmi_dev), GFP_KERNEL);
850 if (!hdmi_dev) {
851 dev_err(dev, "out of memory\n");
852 ret = -ENOMEM;
853 goto fail;
854 }
855
856 hdmi_dev->dev = dev;
857
858 ret = hdmi_resources_init(hdmi_dev);
859 if (ret)
860 goto fail;
861
862 /* mapping HDMI registers */
863 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
864 if (res == NULL) {
865 dev_err(dev, "get memory resource failed.\n");
866 ret = -ENXIO;
867 goto fail_init;
868 }
869
870 hdmi_dev->regs = devm_ioremap(&pdev->dev, res->start,
871 resource_size(res));
872 if (hdmi_dev->regs == NULL) {
873 dev_err(dev, "register mapping failed.\n");
874 ret = -ENXIO;
875 goto fail_init;
876 }
877
878 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
879 if (res == NULL) {
880 dev_err(dev, "get interrupt resource failed.\n");
881 ret = -ENXIO;
882 goto fail_init;
883 }
884
885 ret = devm_request_irq(&pdev->dev, res->start, hdmi_irq_handler, 0,
886 "hdmi", hdmi_dev);
887 if (ret) {
888 dev_err(dev, "request interrupt failed.\n");
889 goto fail_init;
890 }
891 hdmi_dev->irq = res->start;
892
893 /* setting v4l2 name to prevent WARN_ON in v4l2_device_register */
894 strlcpy(hdmi_dev->v4l2_dev.name, dev_name(dev),
895 sizeof(hdmi_dev->v4l2_dev.name));
896 /* passing NULL owner prevents driver from erasing drvdata */
897 ret = v4l2_device_register(NULL, &hdmi_dev->v4l2_dev);
898 if (ret) {
899 dev_err(dev, "could not register v4l2 device.\n");
900 goto fail_init;
901 }
902
903 /* testing if hdmiphy info is present */
904 if (!pdata->hdmiphy_info) {
905 dev_err(dev, "hdmiphy info is missing in platform data\n");
906 ret = -ENXIO;
907 goto fail_vdev;
908 }
909
910 adapter = i2c_get_adapter(pdata->hdmiphy_bus);
911 if (adapter == NULL) {
912 dev_err(dev, "hdmiphy adapter request failed\n");
913 ret = -ENXIO;
914 goto fail_vdev;
915 }
916
917 hdmi_dev->phy_sd = v4l2_i2c_new_subdev_board(&hdmi_dev->v4l2_dev,
918 adapter, pdata->hdmiphy_info, NULL);
919 /* on failure or not adapter is no longer useful */
920 i2c_put_adapter(adapter);
921 if (hdmi_dev->phy_sd == NULL) {
922 dev_err(dev, "missing subdev for hdmiphy\n");
923 ret = -ENODEV;
924 goto fail_vdev;
925 }
926
927 /* initialization of MHL interface if present */
928 if (pdata->mhl_info) {
929 adapter = i2c_get_adapter(pdata->mhl_bus);
930 if (adapter == NULL) {
931 dev_err(dev, "MHL adapter request failed\n");
932 ret = -ENXIO;
933 goto fail_vdev;
934 }
935
936 hdmi_dev->mhl_sd = v4l2_i2c_new_subdev_board(
937 &hdmi_dev->v4l2_dev, adapter,
938 pdata->mhl_info, NULL);
939 /* on failure or not adapter is no longer useful */
940 i2c_put_adapter(adapter);
941 if (hdmi_dev->mhl_sd == NULL) {
942 dev_err(dev, "missing subdev for MHL\n");
943 ret = -ENODEV;
944 goto fail_vdev;
945 }
946 }
947
948 clk_enable(hdmi_dev->res.hdmi);
949
950 pm_runtime_enable(dev);
951
952 sd = &hdmi_dev->sd;
953 v4l2_subdev_init(sd, &hdmi_sd_ops);
954 sd->owner = THIS_MODULE;
955
956 strlcpy(sd->name, "s5p-hdmi", sizeof sd->name);
957 hdmi_dev->cur_preset = HDMI_DEFAULT_PRESET;
958 /* FIXME: missing fail preset is not supported */
959 hdmi_dev->cur_conf = hdmi_preset2timings(hdmi_dev->cur_preset);
960 hdmi_dev->cur_conf_dirty = 1;
961
962 /* storing subdev for call that have only access to struct device */
963 dev_set_drvdata(dev, sd);
964
965 dev_info(dev, "probe successful\n");
966
967 return 0;
968
969fail_vdev:
970 v4l2_device_unregister(&hdmi_dev->v4l2_dev);
971
972fail_init:
973 hdmi_resources_cleanup(hdmi_dev);
974
975fail:
976 dev_err(dev, "probe failed\n");
977 return ret;
978}
979
980static int __devexit hdmi_remove(struct platform_device *pdev)
981{
982 struct device *dev = &pdev->dev;
983 struct v4l2_subdev *sd = dev_get_drvdata(dev);
984 struct hdmi_device *hdmi_dev = sd_to_hdmi_dev(sd);
985
986 pm_runtime_disable(dev);
987 clk_disable(hdmi_dev->res.hdmi);
988 v4l2_device_unregister(&hdmi_dev->v4l2_dev);
989 disable_irq(hdmi_dev->irq);
990 hdmi_resources_cleanup(hdmi_dev);
991 dev_info(dev, "remove successful\n");
992
993 return 0;
994}
995
996static struct platform_driver hdmi_driver __refdata = {
997 .probe = hdmi_probe,
998 .remove = __devexit_p(hdmi_remove),
999 .id_table = hdmi_driver_types,
1000 .driver = {
1001 .name = "s5p-hdmi",
1002 .owner = THIS_MODULE,
1003 .pm = &hdmi_pm_ops,
1004 }
1005};
1006
1007module_platform_driver(hdmi_driver);