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Avoid beyond bounds copy while caching ACL
[zen-stable.git] / drivers / media / video / s5p-tv / hdmi_drv.c
blob8b41a0410ab175ab3968ad66036c6290301a6a68
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/v4l2-common.h>
34 #include <media/v4l2-dev.h>
35 #include <media/v4l2-device.h>
36
37 #include "regs-hdmi.h"
38
39 MODULE_AUTHOR("Tomasz Stanislawski, <t.stanislaws@samsung.com>");
40 MODULE_DESCRIPTION("Samsung HDMI");
41 MODULE_LICENSE("GPL");
42
43 /* default preset configured on probe */
44 #define HDMI_DEFAULT_PRESET V4L2_DV_1080P60
45
46 struct hdmi_resources {
47 struct clk *hdmi;
48 struct clk *sclk_hdmi;
49 struct clk *sclk_pixel;
50 struct clk *sclk_hdmiphy;
51 struct clk *hdmiphy;
52 struct regulator_bulk_data *regul_bulk;
53 int regul_count;
54 };
55
56 struct hdmi_device {
57 /** base address of HDMI registers */
58 void __iomem *regs;
59 /** HDMI interrupt */
60 unsigned int irq;
61 /** pointer to device parent */
62 struct device *dev;
63 /** subdev generated by HDMI device */
64 struct v4l2_subdev sd;
65 /** V4L2 device structure */
66 struct v4l2_device v4l2_dev;
67 /** subdev of HDMIPHY interface */
68 struct v4l2_subdev *phy_sd;
69 /** configuration of current graphic mode */
70 const struct hdmi_preset_conf *cur_conf;
71 /** current preset */
72 u32 cur_preset;
73 /** other resources */
74 struct hdmi_resources res;
75 };
76
77 struct hdmi_driver_data {
78 int hdmiphy_bus;
79 };
80
81 struct hdmi_tg_regs {
82 u8 cmd;
83 u8 h_fsz_l;
84 u8 h_fsz_h;
85 u8 hact_st_l;
86 u8 hact_st_h;
87 u8 hact_sz_l;
88 u8 hact_sz_h;
89 u8 v_fsz_l;
90 u8 v_fsz_h;
91 u8 vsync_l;
92 u8 vsync_h;
93 u8 vsync2_l;
94 u8 vsync2_h;
95 u8 vact_st_l;
96 u8 vact_st_h;
97 u8 vact_sz_l;
98 u8 vact_sz_h;
99 u8 field_chg_l;
100 u8 field_chg_h;
101 u8 vact_st2_l;
102 u8 vact_st2_h;
103 u8 vsync_top_hdmi_l;
104 u8 vsync_top_hdmi_h;
105 u8 vsync_bot_hdmi_l;
106 u8 vsync_bot_hdmi_h;
107 u8 field_top_hdmi_l;
108 u8 field_top_hdmi_h;
109 u8 field_bot_hdmi_l;
110 u8 field_bot_hdmi_h;
111 };
112
113 struct hdmi_core_regs {
114 u8 h_blank[2];
115 u8 v_blank[3];
116 u8 h_v_line[3];
117 u8 vsync_pol[1];
118 u8 int_pro_mode[1];
119 u8 v_blank_f[3];
120 u8 h_sync_gen[3];
121 u8 v_sync_gen1[3];
122 u8 v_sync_gen2[3];
123 u8 v_sync_gen3[3];
124 };
125
126 struct hdmi_preset_conf {
127 struct hdmi_core_regs core;
128 struct hdmi_tg_regs tg;
129 struct v4l2_mbus_framefmt mbus_fmt;
130 };
131
132 /* I2C module and id for HDMIPHY */
133 static struct i2c_board_info hdmiphy_info = {
134 I2C_BOARD_INFO("hdmiphy", 0x38),
135 };
136
137 static struct hdmi_driver_data hdmi_driver_data[] = {
138 { .hdmiphy_bus = 3 },
139 { .hdmiphy_bus = 8 },
140 };
141
142 static struct platform_device_id hdmi_driver_types[] = {
143 {
144 .name = "s5pv210-hdmi",
145 .driver_data = (unsigned long)&hdmi_driver_data[0],
146 }, {
147 .name = "exynos4-hdmi",
148 .driver_data = (unsigned long)&hdmi_driver_data[1],
149 }, {
150 /* end node */
151 }
152 };
153
154 static const struct v4l2_subdev_ops hdmi_sd_ops;
155
156 static struct hdmi_device *sd_to_hdmi_dev(struct v4l2_subdev *sd)
157 {
158 return container_of(sd, struct hdmi_device, sd);
159 }
160
161 static inline
162 void hdmi_write(struct hdmi_device *hdev, u32 reg_id, u32 value)
163 {
164 writel(value, hdev->regs + reg_id);
165 }
166
167 static inline
168 void hdmi_write_mask(struct hdmi_device *hdev, u32 reg_id, u32 value, u32 mask)
169 {
170 u32 old = readl(hdev->regs + reg_id);
171 value = (value & mask) | (old & ~mask);
172 writel(value, hdev->regs + reg_id);
173 }
174
175 static inline
176 void hdmi_writeb(struct hdmi_device *hdev, u32 reg_id, u8 value)
177 {
178 writeb(value, hdev->regs + reg_id);
179 }
180
181 static inline u32 hdmi_read(struct hdmi_device *hdev, u32 reg_id)
182 {
183 return readl(hdev->regs + reg_id);
184 }
185
186 static irqreturn_t hdmi_irq_handler(int irq, void *dev_data)
187 {
188 struct hdmi_device *hdev = dev_data;
189 u32 intc_flag;
190
191 (void)irq;
192 intc_flag = hdmi_read(hdev, HDMI_INTC_FLAG);
193 /* clearing flags for HPD plug/unplug */
194 if (intc_flag & HDMI_INTC_FLAG_HPD_UNPLUG) {
195 printk(KERN_INFO "unplugged\n");
196 hdmi_write_mask(hdev, HDMI_INTC_FLAG, ~0,
197 HDMI_INTC_FLAG_HPD_UNPLUG);
198 }
199 if (intc_flag & HDMI_INTC_FLAG_HPD_PLUG) {
200 printk(KERN_INFO "plugged\n");
201 hdmi_write_mask(hdev, HDMI_INTC_FLAG, ~0,
202 HDMI_INTC_FLAG_HPD_PLUG);
203 }
204
205 return IRQ_HANDLED;
206 }
207
208 static void hdmi_reg_init(struct hdmi_device *hdev)
209 {
210 /* enable HPD interrupts */
211 hdmi_write_mask(hdev, HDMI_INTC_CON, ~0, HDMI_INTC_EN_GLOBAL |
212 HDMI_INTC_EN_HPD_PLUG | HDMI_INTC_EN_HPD_UNPLUG);
213 /* choose DVI mode */
214 hdmi_write_mask(hdev, HDMI_MODE_SEL,
215 HDMI_MODE_DVI_EN, HDMI_MODE_MASK);
216 hdmi_write_mask(hdev, HDMI_CON_2, ~0,
217 HDMI_DVI_PERAMBLE_EN | HDMI_DVI_BAND_EN);
218 /* disable bluescreen */
219 hdmi_write_mask(hdev, HDMI_CON_0, 0, HDMI_BLUE_SCR_EN);
220 /* choose bluescreen (fecal) color */
221 hdmi_writeb(hdev, HDMI_BLUE_SCREEN_0, 0x12);
222 hdmi_writeb(hdev, HDMI_BLUE_SCREEN_1, 0x34);
223 hdmi_writeb(hdev, HDMI_BLUE_SCREEN_2, 0x56);
224 }
225
226 static void hdmi_timing_apply(struct hdmi_device *hdev,
227 const struct hdmi_preset_conf *conf)
228 {
229 const struct hdmi_core_regs *core = &conf->core;
230 const struct hdmi_tg_regs *tg = &conf->tg;
231
232 /* setting core registers */
233 hdmi_writeb(hdev, HDMI_H_BLANK_0, core->h_blank[0]);
234 hdmi_writeb(hdev, HDMI_H_BLANK_1, core->h_blank[1]);
235 hdmi_writeb(hdev, HDMI_V_BLANK_0, core->v_blank[0]);
236 hdmi_writeb(hdev, HDMI_V_BLANK_1, core->v_blank[1]);
237 hdmi_writeb(hdev, HDMI_V_BLANK_2, core->v_blank[2]);
238 hdmi_writeb(hdev, HDMI_H_V_LINE_0, core->h_v_line[0]);
239 hdmi_writeb(hdev, HDMI_H_V_LINE_1, core->h_v_line[1]);
240 hdmi_writeb(hdev, HDMI_H_V_LINE_2, core->h_v_line[2]);
241 hdmi_writeb(hdev, HDMI_VSYNC_POL, core->vsync_pol[0]);
242 hdmi_writeb(hdev, HDMI_INT_PRO_MODE, core->int_pro_mode[0]);
243 hdmi_writeb(hdev, HDMI_V_BLANK_F_0, core->v_blank_f[0]);
244 hdmi_writeb(hdev, HDMI_V_BLANK_F_1, core->v_blank_f[1]);
245 hdmi_writeb(hdev, HDMI_V_BLANK_F_2, core->v_blank_f[2]);
246 hdmi_writeb(hdev, HDMI_H_SYNC_GEN_0, core->h_sync_gen[0]);
247 hdmi_writeb(hdev, HDMI_H_SYNC_GEN_1, core->h_sync_gen[1]);
248 hdmi_writeb(hdev, HDMI_H_SYNC_GEN_2, core->h_sync_gen[2]);
249 hdmi_writeb(hdev, HDMI_V_SYNC_GEN_1_0, core->v_sync_gen1[0]);
250 hdmi_writeb(hdev, HDMI_V_SYNC_GEN_1_1, core->v_sync_gen1[1]);
251 hdmi_writeb(hdev, HDMI_V_SYNC_GEN_1_2, core->v_sync_gen1[2]);
252 hdmi_writeb(hdev, HDMI_V_SYNC_GEN_2_0, core->v_sync_gen2[0]);
253 hdmi_writeb(hdev, HDMI_V_SYNC_GEN_2_1, core->v_sync_gen2[1]);
254 hdmi_writeb(hdev, HDMI_V_SYNC_GEN_2_2, core->v_sync_gen2[2]);
255 hdmi_writeb(hdev, HDMI_V_SYNC_GEN_3_0, core->v_sync_gen3[0]);
256 hdmi_writeb(hdev, HDMI_V_SYNC_GEN_3_1, core->v_sync_gen3[1]);
257 hdmi_writeb(hdev, HDMI_V_SYNC_GEN_3_2, core->v_sync_gen3[2]);
258 /* Timing generator registers */
259 hdmi_writeb(hdev, HDMI_TG_H_FSZ_L, tg->h_fsz_l);
260 hdmi_writeb(hdev, HDMI_TG_H_FSZ_H, tg->h_fsz_h);
261 hdmi_writeb(hdev, HDMI_TG_HACT_ST_L, tg->hact_st_l);
262 hdmi_writeb(hdev, HDMI_TG_HACT_ST_H, tg->hact_st_h);
263 hdmi_writeb(hdev, HDMI_TG_HACT_SZ_L, tg->hact_sz_l);
264 hdmi_writeb(hdev, HDMI_TG_HACT_SZ_H, tg->hact_sz_h);
265 hdmi_writeb(hdev, HDMI_TG_V_FSZ_L, tg->v_fsz_l);
266 hdmi_writeb(hdev, HDMI_TG_V_FSZ_H, tg->v_fsz_h);
267 hdmi_writeb(hdev, HDMI_TG_VSYNC_L, tg->vsync_l);
268 hdmi_writeb(hdev, HDMI_TG_VSYNC_H, tg->vsync_h);
269 hdmi_writeb(hdev, HDMI_TG_VSYNC2_L, tg->vsync2_l);
270 hdmi_writeb(hdev, HDMI_TG_VSYNC2_H, tg->vsync2_h);
271 hdmi_writeb(hdev, HDMI_TG_VACT_ST_L, tg->vact_st_l);
272 hdmi_writeb(hdev, HDMI_TG_VACT_ST_H, tg->vact_st_h);
273 hdmi_writeb(hdev, HDMI_TG_VACT_SZ_L, tg->vact_sz_l);
274 hdmi_writeb(hdev, HDMI_TG_VACT_SZ_H, tg->vact_sz_h);
275 hdmi_writeb(hdev, HDMI_TG_FIELD_CHG_L, tg->field_chg_l);
276 hdmi_writeb(hdev, HDMI_TG_FIELD_CHG_H, tg->field_chg_h);
277 hdmi_writeb(hdev, HDMI_TG_VACT_ST2_L, tg->vact_st2_l);
278 hdmi_writeb(hdev, HDMI_TG_VACT_ST2_H, tg->vact_st2_h);
279 hdmi_writeb(hdev, HDMI_TG_VSYNC_TOP_HDMI_L, tg->vsync_top_hdmi_l);
280 hdmi_writeb(hdev, HDMI_TG_VSYNC_TOP_HDMI_H, tg->vsync_top_hdmi_h);
281 hdmi_writeb(hdev, HDMI_TG_VSYNC_BOT_HDMI_L, tg->vsync_bot_hdmi_l);
282 hdmi_writeb(hdev, HDMI_TG_VSYNC_BOT_HDMI_H, tg->vsync_bot_hdmi_h);
283 hdmi_writeb(hdev, HDMI_TG_FIELD_TOP_HDMI_L, tg->field_top_hdmi_l);
284 hdmi_writeb(hdev, HDMI_TG_FIELD_TOP_HDMI_H, tg->field_top_hdmi_h);
285 hdmi_writeb(hdev, HDMI_TG_FIELD_BOT_HDMI_L, tg->field_bot_hdmi_l);
286 hdmi_writeb(hdev, HDMI_TG_FIELD_BOT_HDMI_H, tg->field_bot_hdmi_h);
287 }
288
289 static int hdmi_conf_apply(struct hdmi_device *hdmi_dev)
290 {
291 struct device *dev = hdmi_dev->dev;
292 const struct hdmi_preset_conf *conf = hdmi_dev->cur_conf;
293 struct v4l2_dv_preset preset;
294 int ret;
295
296 dev_dbg(dev, "%s\n", __func__);
297
298 /* reset hdmiphy */
299 hdmi_write_mask(hdmi_dev, HDMI_PHY_RSTOUT, ~0, HDMI_PHY_SW_RSTOUT);
300 mdelay(10);
301 hdmi_write_mask(hdmi_dev, HDMI_PHY_RSTOUT, 0, HDMI_PHY_SW_RSTOUT);
302 mdelay(10);
303
304 /* configure presets */
305 preset.preset = hdmi_dev->cur_preset;
306 ret = v4l2_subdev_call(hdmi_dev->phy_sd, video, s_dv_preset, &preset);
307 if (ret) {
308 dev_err(dev, "failed to set preset (%u)\n", preset.preset);
309 return ret;
310 }
311
312 /* resetting HDMI core */
313 hdmi_write_mask(hdmi_dev, HDMI_CORE_RSTOUT, 0, HDMI_CORE_SW_RSTOUT);
314 mdelay(10);
315 hdmi_write_mask(hdmi_dev, HDMI_CORE_RSTOUT, ~0, HDMI_CORE_SW_RSTOUT);
316 mdelay(10);
317
318 hdmi_reg_init(hdmi_dev);
319
320 /* setting core registers */
321 hdmi_timing_apply(hdmi_dev, conf);
322
323 return 0;
324 }
325
326 static void hdmi_dumpregs(struct hdmi_device *hdev, char *prefix)
327 {
328 #define DUMPREG(reg_id) \
329 dev_dbg(hdev->dev, "%s:" #reg_id " = %08x\n", prefix, \
330 readl(hdev->regs + reg_id))
331
332 dev_dbg(hdev->dev, "%s: ---- CONTROL REGISTERS ----\n", prefix);
333 DUMPREG(HDMI_INTC_FLAG);
334 DUMPREG(HDMI_INTC_CON);
335 DUMPREG(HDMI_HPD_STATUS);
336 DUMPREG(HDMI_PHY_RSTOUT);
337 DUMPREG(HDMI_PHY_VPLL);
338 DUMPREG(HDMI_PHY_CMU);
339 DUMPREG(HDMI_CORE_RSTOUT);
340
341 dev_dbg(hdev->dev, "%s: ---- CORE REGISTERS ----\n", prefix);
342 DUMPREG(HDMI_CON_0);
343 DUMPREG(HDMI_CON_1);
344 DUMPREG(HDMI_CON_2);
345 DUMPREG(HDMI_SYS_STATUS);
346 DUMPREG(HDMI_PHY_STATUS);
347 DUMPREG(HDMI_STATUS_EN);
348 DUMPREG(HDMI_HPD);
349 DUMPREG(HDMI_MODE_SEL);
350 DUMPREG(HDMI_HPD_GEN);
351 DUMPREG(HDMI_DC_CONTROL);
352 DUMPREG(HDMI_VIDEO_PATTERN_GEN);
353
354 dev_dbg(hdev->dev, "%s: ---- CORE SYNC REGISTERS ----\n", prefix);
355 DUMPREG(HDMI_H_BLANK_0);
356 DUMPREG(HDMI_H_BLANK_1);
357 DUMPREG(HDMI_V_BLANK_0);
358 DUMPREG(HDMI_V_BLANK_1);
359 DUMPREG(HDMI_V_BLANK_2);
360 DUMPREG(HDMI_H_V_LINE_0);
361 DUMPREG(HDMI_H_V_LINE_1);
362 DUMPREG(HDMI_H_V_LINE_2);
363 DUMPREG(HDMI_VSYNC_POL);
364 DUMPREG(HDMI_INT_PRO_MODE);
365 DUMPREG(HDMI_V_BLANK_F_0);
366 DUMPREG(HDMI_V_BLANK_F_1);
367 DUMPREG(HDMI_V_BLANK_F_2);
368 DUMPREG(HDMI_H_SYNC_GEN_0);
369 DUMPREG(HDMI_H_SYNC_GEN_1);
370 DUMPREG(HDMI_H_SYNC_GEN_2);
371 DUMPREG(HDMI_V_SYNC_GEN_1_0);
372 DUMPREG(HDMI_V_SYNC_GEN_1_1);
373 DUMPREG(HDMI_V_SYNC_GEN_1_2);
374 DUMPREG(HDMI_V_SYNC_GEN_2_0);
375 DUMPREG(HDMI_V_SYNC_GEN_2_1);
376 DUMPREG(HDMI_V_SYNC_GEN_2_2);
377 DUMPREG(HDMI_V_SYNC_GEN_3_0);
378 DUMPREG(HDMI_V_SYNC_GEN_3_1);
379 DUMPREG(HDMI_V_SYNC_GEN_3_2);
380
381 dev_dbg(hdev->dev, "%s: ---- TG REGISTERS ----\n", prefix);
382 DUMPREG(HDMI_TG_CMD);
383 DUMPREG(HDMI_TG_H_FSZ_L);
384 DUMPREG(HDMI_TG_H_FSZ_H);
385 DUMPREG(HDMI_TG_HACT_ST_L);
386 DUMPREG(HDMI_TG_HACT_ST_H);
387 DUMPREG(HDMI_TG_HACT_SZ_L);
388 DUMPREG(HDMI_TG_HACT_SZ_H);
389 DUMPREG(HDMI_TG_V_FSZ_L);
390 DUMPREG(HDMI_TG_V_FSZ_H);
391 DUMPREG(HDMI_TG_VSYNC_L);
392 DUMPREG(HDMI_TG_VSYNC_H);
393 DUMPREG(HDMI_TG_VSYNC2_L);
394 DUMPREG(HDMI_TG_VSYNC2_H);
395 DUMPREG(HDMI_TG_VACT_ST_L);
396 DUMPREG(HDMI_TG_VACT_ST_H);
397 DUMPREG(HDMI_TG_VACT_SZ_L);
398 DUMPREG(HDMI_TG_VACT_SZ_H);
399 DUMPREG(HDMI_TG_FIELD_CHG_L);
400 DUMPREG(HDMI_TG_FIELD_CHG_H);
401 DUMPREG(HDMI_TG_VACT_ST2_L);
402 DUMPREG(HDMI_TG_VACT_ST2_H);
403 DUMPREG(HDMI_TG_VSYNC_TOP_HDMI_L);
404 DUMPREG(HDMI_TG_VSYNC_TOP_HDMI_H);
405 DUMPREG(HDMI_TG_VSYNC_BOT_HDMI_L);
406 DUMPREG(HDMI_TG_VSYNC_BOT_HDMI_H);
407 DUMPREG(HDMI_TG_FIELD_TOP_HDMI_L);
408 DUMPREG(HDMI_TG_FIELD_TOP_HDMI_H);
409 DUMPREG(HDMI_TG_FIELD_BOT_HDMI_L);
410 DUMPREG(HDMI_TG_FIELD_BOT_HDMI_H);
411 #undef DUMPREG
412 }
413
414 static const struct hdmi_preset_conf hdmi_conf_480p = {
415 .core = {
416 .h_blank = {0x8a, 0x00},
417 .v_blank = {0x0d, 0x6a, 0x01},
418 .h_v_line = {0x0d, 0xa2, 0x35},
419 .vsync_pol = {0x01},
420 .int_pro_mode = {0x00},
421 .v_blank_f = {0x00, 0x00, 0x00},
422 .h_sync_gen = {0x0e, 0x30, 0x11},
423 .v_sync_gen1 = {0x0f, 0x90, 0x00},
424 /* other don't care */
425 },
426 .tg = {
427 0x00, /* cmd */
428 0x5a, 0x03, /* h_fsz */
429 0x8a, 0x00, 0xd0, 0x02, /* hact */
430 0x0d, 0x02, /* v_fsz */
431 0x01, 0x00, 0x33, 0x02, /* vsync */
432 0x2d, 0x00, 0xe0, 0x01, /* vact */
433 0x33, 0x02, /* field_chg */
434 0x49, 0x02, /* vact_st2 */
435 0x01, 0x00, 0x33, 0x02, /* vsync top/bot */
436 0x01, 0x00, 0x33, 0x02, /* field top/bot */
437 },
438 .mbus_fmt = {
439 .width = 720,
440 .height = 480,
441 .code = V4L2_MBUS_FMT_FIXED, /* means RGB888 */
442 .field = V4L2_FIELD_NONE,
443 .colorspace = V4L2_COLORSPACE_SRGB,
444 },
445 };
446
447 static const struct hdmi_preset_conf hdmi_conf_720p60 = {
448 .core = {
449 .h_blank = {0x72, 0x01},
450 .v_blank = {0xee, 0xf2, 0x00},
451 .h_v_line = {0xee, 0x22, 0x67},
452 .vsync_pol = {0x00},
453 .int_pro_mode = {0x00},
454 .v_blank_f = {0x00, 0x00, 0x00}, /* don't care */
455 .h_sync_gen = {0x6c, 0x50, 0x02},
456 .v_sync_gen1 = {0x0a, 0x50, 0x00},
457 /* other don't care */
458 },
459 .tg = {
460 0x00, /* cmd */
461 0x72, 0x06, /* h_fsz */
462 0x72, 0x01, 0x00, 0x05, /* hact */
463 0xee, 0x02, /* v_fsz */
464 0x01, 0x00, 0x33, 0x02, /* vsync */
465 0x1e, 0x00, 0xd0, 0x02, /* vact */
466 0x33, 0x02, /* field_chg */
467 0x49, 0x02, /* vact_st2 */
468 0x01, 0x00, 0x33, 0x02, /* vsync top/bot */
469 0x01, 0x00, 0x33, 0x02, /* field top/bot */
470 },
471 .mbus_fmt = {
472 .width = 1280,
473 .height = 720,
474 .code = V4L2_MBUS_FMT_FIXED, /* means RGB888 */
475 .field = V4L2_FIELD_NONE,
476 .colorspace = V4L2_COLORSPACE_SRGB,
477 },
478 };
479
480 static const struct hdmi_preset_conf hdmi_conf_1080p50 = {
481 .core = {
482 .h_blank = {0xd0, 0x02},
483 .v_blank = {0x65, 0x6c, 0x01},
484 .h_v_line = {0x65, 0x04, 0xa5},
485 .vsync_pol = {0x00},
486 .int_pro_mode = {0x00},
487 .v_blank_f = {0x00, 0x00, 0x00}, /* don't care */
488 .h_sync_gen = {0x0e, 0xea, 0x08},
489 .v_sync_gen1 = {0x09, 0x40, 0x00},
490 /* other don't care */
491 },
492 .tg = {
493 0x00, /* cmd */
494 0x98, 0x08, /* h_fsz */
495 0x18, 0x01, 0x80, 0x07, /* hact */
496 0x65, 0x04, /* v_fsz */
497 0x01, 0x00, 0x33, 0x02, /* vsync */
498 0x2d, 0x00, 0x38, 0x04, /* vact */
499 0x33, 0x02, /* field_chg */
500 0x49, 0x02, /* vact_st2 */
501 0x01, 0x00, 0x33, 0x02, /* vsync top/bot */
502 0x01, 0x00, 0x33, 0x02, /* field top/bot */
503 },
504 .mbus_fmt = {
505 .width = 1920,
506 .height = 1080,
507 .code = V4L2_MBUS_FMT_FIXED, /* means RGB888 */
508 .field = V4L2_FIELD_NONE,
509 .colorspace = V4L2_COLORSPACE_SRGB,
510 },
511 };
512
513 static const struct hdmi_preset_conf hdmi_conf_1080p60 = {
514 .core = {
515 .h_blank = {0x18, 0x01},
516 .v_blank = {0x65, 0x6c, 0x01},
517 .h_v_line = {0x65, 0x84, 0x89},
518 .vsync_pol = {0x00},
519 .int_pro_mode = {0x00},
520 .v_blank_f = {0x00, 0x00, 0x00}, /* don't care */
521 .h_sync_gen = {0x56, 0x08, 0x02},
522 .v_sync_gen1 = {0x09, 0x40, 0x00},
523 /* other don't care */
524 },
525 .tg = {
526 0x00, /* cmd */
527 0x98, 0x08, /* h_fsz */
528 0x18, 0x01, 0x80, 0x07, /* hact */
529 0x65, 0x04, /* v_fsz */
530 0x01, 0x00, 0x33, 0x02, /* vsync */
531 0x2d, 0x00, 0x38, 0x04, /* vact */
532 0x33, 0x02, /* field_chg */
533 0x48, 0x02, /* vact_st2 */
534 0x01, 0x00, 0x01, 0x00, /* vsync top/bot */
535 0x01, 0x00, 0x33, 0x02, /* field top/bot */
536 },
537 .mbus_fmt = {
538 .width = 1920,
539 .height = 1080,
540 .code = V4L2_MBUS_FMT_FIXED, /* means RGB888 */
541 .field = V4L2_FIELD_NONE,
542 .colorspace = V4L2_COLORSPACE_SRGB,
543 },
544 };
545
546 static const struct {
547 u32 preset;
548 const struct hdmi_preset_conf *conf;
549 } hdmi_conf[] = {
550 { V4L2_DV_480P59_94, &hdmi_conf_480p },
551 { V4L2_DV_720P59_94, &hdmi_conf_720p60 },
552 { V4L2_DV_1080P50, &hdmi_conf_1080p50 },
553 { V4L2_DV_1080P30, &hdmi_conf_1080p60 },
554 { V4L2_DV_1080P60, &hdmi_conf_1080p60 },
555 };
556
557 static const struct hdmi_preset_conf *hdmi_preset2conf(u32 preset)
558 {
559 int i;
560
561 for (i = 0; i < ARRAY_SIZE(hdmi_conf); ++i)
562 if (hdmi_conf[i].preset == preset)
563 return hdmi_conf[i].conf;
564 return NULL;
565 }
566
567 static int hdmi_streamon(struct hdmi_device *hdev)
568 {
569 struct device *dev = hdev->dev;
570 struct hdmi_resources *res = &hdev->res;
571 int ret, tries;
572
573 dev_dbg(dev, "%s\n", __func__);
574
575 ret = v4l2_subdev_call(hdev->phy_sd, video, s_stream, 1);
576 if (ret)
577 return ret;
578
579 /* waiting for HDMIPHY's PLL to get to steady state */
580 for (tries = 100; tries; --tries) {
581 u32 val = hdmi_read(hdev, HDMI_PHY_STATUS);
582 if (val & HDMI_PHY_STATUS_READY)
583 break;
584 mdelay(1);
585 }
586 /* steady state not achieved */
587 if (tries == 0) {
588 dev_err(dev, "hdmiphy's pll could not reach steady state.\n");
589 v4l2_subdev_call(hdev->phy_sd, video, s_stream, 0);
590 hdmi_dumpregs(hdev, "s_stream");
591 return -EIO;
592 }
593
594 /* hdmiphy clock is used for HDMI in streaming mode */
595 clk_disable(res->sclk_hdmi);
596 clk_set_parent(res->sclk_hdmi, res->sclk_hdmiphy);
597 clk_enable(res->sclk_hdmi);
598
599 /* enable HDMI and timing generator */
600 hdmi_write_mask(hdev, HDMI_CON_0, ~0, HDMI_EN);
601 hdmi_write_mask(hdev, HDMI_TG_CMD, ~0, HDMI_TG_EN);
602 hdmi_dumpregs(hdev, "streamon");
603 return 0;
604 }
605
606 static int hdmi_streamoff(struct hdmi_device *hdev)
607 {
608 struct device *dev = hdev->dev;
609 struct hdmi_resources *res = &hdev->res;
610
611 dev_dbg(dev, "%s\n", __func__);
612
613 hdmi_write_mask(hdev, HDMI_CON_0, 0, HDMI_EN);
614 hdmi_write_mask(hdev, HDMI_TG_CMD, 0, HDMI_TG_EN);
615
616 /* pixel(vpll) clock is used for HDMI in config mode */
617 clk_disable(res->sclk_hdmi);
618 clk_set_parent(res->sclk_hdmi, res->sclk_pixel);
619 clk_enable(res->sclk_hdmi);
620
621 v4l2_subdev_call(hdev->phy_sd, video, s_stream, 0);
622
623 hdmi_dumpregs(hdev, "streamoff");
624 return 0;
625 }
626
627 static int hdmi_s_stream(struct v4l2_subdev *sd, int enable)
628 {
629 struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
630 struct device *dev = hdev->dev;
631
632 dev_dbg(dev, "%s(%d)\n", __func__, enable);
633 if (enable)
634 return hdmi_streamon(hdev);
635 return hdmi_streamoff(hdev);
636 }
637
638 static void hdmi_resource_poweron(struct hdmi_resources *res)
639 {
640 /* turn HDMI power on */
641 regulator_bulk_enable(res->regul_count, res->regul_bulk);
642 /* power-on hdmi physical interface */
643 clk_enable(res->hdmiphy);
644 /* use VPP as parent clock; HDMIPHY is not working yet */
645 clk_set_parent(res->sclk_hdmi, res->sclk_pixel);
646 /* turn clocks on */
647 clk_enable(res->sclk_hdmi);
648 }
649
650 static void hdmi_resource_poweroff(struct hdmi_resources *res)
651 {
652 /* turn clocks off */
653 clk_disable(res->sclk_hdmi);
654 /* power-off hdmiphy */
655 clk_disable(res->hdmiphy);
656 /* turn HDMI power off */
657 regulator_bulk_disable(res->regul_count, res->regul_bulk);
658 }
659
660 static int hdmi_s_power(struct v4l2_subdev *sd, int on)
661 {
662 struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
663 int ret;
664
665 if (on)
666 ret = pm_runtime_get_sync(hdev->dev);
667 else
668 ret = pm_runtime_put_sync(hdev->dev);
669 /* only values < 0 indicate errors */
670 return IS_ERR_VALUE(ret) ? ret : 0;
671 }
672
673 static int hdmi_s_dv_preset(struct v4l2_subdev *sd,
674 struct v4l2_dv_preset *preset)
675 {
676 struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
677 struct device *dev = hdev->dev;
678 const struct hdmi_preset_conf *conf;
679
680 conf = hdmi_preset2conf(preset->preset);
681 if (conf == NULL) {
682 dev_err(dev, "preset (%u) not supported\n", preset->preset);
683 return -EINVAL;
684 }
685 hdev->cur_conf = conf;
686 hdev->cur_preset = preset->preset;
687 return 0;
688 }
689
690 static int hdmi_g_dv_preset(struct v4l2_subdev *sd,
691 struct v4l2_dv_preset *preset)
692 {
693 memset(preset, 0, sizeof(*preset));
694 preset->preset = sd_to_hdmi_dev(sd)->cur_preset;
695 return 0;
696 }
697
698 static int hdmi_g_mbus_fmt(struct v4l2_subdev *sd,
699 struct v4l2_mbus_framefmt *fmt)
700 {
701 struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
702 struct device *dev = hdev->dev;
703
704 dev_dbg(dev, "%s\n", __func__);
705 if (!hdev->cur_conf)
706 return -EINVAL;
707 *fmt = hdev->cur_conf->mbus_fmt;
708 return 0;
709 }
710
711 static int hdmi_enum_dv_presets(struct v4l2_subdev *sd,
712 struct v4l2_dv_enum_preset *preset)
713 {
714 if (preset->index >= ARRAY_SIZE(hdmi_conf))
715 return -EINVAL;
716 return v4l_fill_dv_preset_info(hdmi_conf[preset->index].preset, preset);
717 }
718
719 static const struct v4l2_subdev_core_ops hdmi_sd_core_ops = {
720 .s_power = hdmi_s_power,
721 };
722
723 static const struct v4l2_subdev_video_ops hdmi_sd_video_ops = {
724 .s_dv_preset = hdmi_s_dv_preset,
725 .g_dv_preset = hdmi_g_dv_preset,
726 .enum_dv_presets = hdmi_enum_dv_presets,
727 .g_mbus_fmt = hdmi_g_mbus_fmt,
728 .s_stream = hdmi_s_stream,
729 };
730
731 static const struct v4l2_subdev_ops hdmi_sd_ops = {
732 .core = &hdmi_sd_core_ops,
733 .video = &hdmi_sd_video_ops,
734 };
735
736 static int hdmi_runtime_suspend(struct device *dev)
737 {
738 struct v4l2_subdev *sd = dev_get_drvdata(dev);
739 struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
740
741 dev_dbg(dev, "%s\n", __func__);
742 hdmi_resource_poweroff(&hdev->res);
743 return 0;
744 }
745
746 static int hdmi_runtime_resume(struct device *dev)
747 {
748 struct v4l2_subdev *sd = dev_get_drvdata(dev);
749 struct hdmi_device *hdev = sd_to_hdmi_dev(sd);
750 int ret = 0;
751
752 dev_dbg(dev, "%s\n", __func__);
753
754 hdmi_resource_poweron(&hdev->res);
755
756 ret = hdmi_conf_apply(hdev);
757 if (ret)
758 goto fail;
759
760 dev_dbg(dev, "poweron succeed\n");
761
762 return 0;
763
764 fail:
765 hdmi_resource_poweroff(&hdev->res);
766 dev_err(dev, "poweron failed\n");
767
768 return ret;
769 }
770
771 static const struct dev_pm_ops hdmi_pm_ops = {
772 .runtime_suspend = hdmi_runtime_suspend,
773 .runtime_resume = hdmi_runtime_resume,
774 };
775
776 static void hdmi_resources_cleanup(struct hdmi_device *hdev)
777 {
778 struct hdmi_resources *res = &hdev->res;
779
780 dev_dbg(hdev->dev, "HDMI resource cleanup\n");
781 /* put clocks, power */
782 if (res->regul_count)
783 regulator_bulk_free(res->regul_count, res->regul_bulk);
784 /* kfree is NULL-safe */
785 kfree(res->regul_bulk);
786 if (!IS_ERR_OR_NULL(res->hdmiphy))
787 clk_put(res->hdmiphy);
788 if (!IS_ERR_OR_NULL(res->sclk_hdmiphy))
789 clk_put(res->sclk_hdmiphy);
790 if (!IS_ERR_OR_NULL(res->sclk_pixel))
791 clk_put(res->sclk_pixel);
792 if (!IS_ERR_OR_NULL(res->sclk_hdmi))
793 clk_put(res->sclk_hdmi);
794 if (!IS_ERR_OR_NULL(res->hdmi))
795 clk_put(res->hdmi);
796 memset(res, 0, sizeof *res);
797 }
798
799 static int hdmi_resources_init(struct hdmi_device *hdev)
800 {
801 struct device *dev = hdev->dev;
802 struct hdmi_resources *res = &hdev->res;
803 static char *supply[] = {
804 "hdmi-en",
805 "vdd",
806 "vdd_osc",
807 "vdd_pll",
808 };
809 int i, ret;
810
811 dev_dbg(dev, "HDMI resource init\n");
812
813 memset(res, 0, sizeof *res);
814 /* get clocks, power */
815
816 res->hdmi = clk_get(dev, "hdmi");
817 if (IS_ERR_OR_NULL(res->hdmi)) {
818 dev_err(dev, "failed to get clock 'hdmi'\n");
819 goto fail;
820 }
821 res->sclk_hdmi = clk_get(dev, "sclk_hdmi");
822 if (IS_ERR_OR_NULL(res->sclk_hdmi)) {
823 dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
824 goto fail;
825 }
826 res->sclk_pixel = clk_get(dev, "sclk_pixel");
827 if (IS_ERR_OR_NULL(res->sclk_pixel)) {
828 dev_err(dev, "failed to get clock 'sclk_pixel'\n");
829 goto fail;
830 }
831 res->sclk_hdmiphy = clk_get(dev, "sclk_hdmiphy");
832 if (IS_ERR_OR_NULL(res->sclk_hdmiphy)) {
833 dev_err(dev, "failed to get clock 'sclk_hdmiphy'\n");
834 goto fail;
835 }
836 res->hdmiphy = clk_get(dev, "hdmiphy");
837 if (IS_ERR_OR_NULL(res->hdmiphy)) {
838 dev_err(dev, "failed to get clock 'hdmiphy'\n");
839 goto fail;
840 }
841 res->regul_bulk = kcalloc(ARRAY_SIZE(supply),
842 sizeof(res->regul_bulk[0]), GFP_KERNEL);
843 if (!res->regul_bulk) {
844 dev_err(dev, "failed to get memory for regulators\n");
845 goto fail;
846 }
847 for (i = 0; i < ARRAY_SIZE(supply); ++i) {
848 res->regul_bulk[i].supply = supply[i];
849 res->regul_bulk[i].consumer = NULL;
850 }
851
852 ret = regulator_bulk_get(dev, ARRAY_SIZE(supply), res->regul_bulk);
853 if (ret) {
854 dev_err(dev, "failed to get regulators\n");
855 goto fail;
856 }
857 res->regul_count = ARRAY_SIZE(supply);
858
859 return 0;
860 fail:
861 dev_err(dev, "HDMI resource init - failed\n");
862 hdmi_resources_cleanup(hdev);
863 return -ENODEV;
864 }
865
866 static int __devinit hdmi_probe(struct platform_device *pdev)
867 {
868 struct device *dev = &pdev->dev;
869 struct resource *res;
870 struct i2c_adapter *phy_adapter;
871 struct v4l2_subdev *sd;
872 struct hdmi_device *hdmi_dev = NULL;
873 struct hdmi_driver_data *drv_data;
874 int ret;
875
876 dev_dbg(dev, "probe start\n");
877
878 hdmi_dev = kzalloc(sizeof(*hdmi_dev), GFP_KERNEL);
879 if (!hdmi_dev) {
880 dev_err(dev, "out of memory\n");
881 ret = -ENOMEM;
882 goto fail;
883 }
884
885 hdmi_dev->dev = dev;
886
887 ret = hdmi_resources_init(hdmi_dev);
888 if (ret)
889 goto fail_hdev;
890
891 /* mapping HDMI registers */
892 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
893 if (res == NULL) {
894 dev_err(dev, "get memory resource failed.\n");
895 ret = -ENXIO;
896 goto fail_init;
897 }
898
899 hdmi_dev->regs = ioremap(res->start, resource_size(res));
900 if (hdmi_dev->regs == NULL) {
901 dev_err(dev, "register mapping failed.\n");
902 ret = -ENXIO;
903 goto fail_hdev;
904 }
905
906 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
907 if (res == NULL) {
908 dev_err(dev, "get interrupt resource failed.\n");
909 ret = -ENXIO;
910 goto fail_regs;
911 }
912
913 ret = request_irq(res->start, hdmi_irq_handler, 0, "hdmi", hdmi_dev);
914 if (ret) {
915 dev_err(dev, "request interrupt failed.\n");
916 goto fail_regs;
917 }
918 hdmi_dev->irq = res->start;
919
920 /* setting v4l2 name to prevent WARN_ON in v4l2_device_register */
921 strlcpy(hdmi_dev->v4l2_dev.name, dev_name(dev),
922 sizeof(hdmi_dev->v4l2_dev.name));
923 /* passing NULL owner prevents driver from erasing drvdata */
924 ret = v4l2_device_register(NULL, &hdmi_dev->v4l2_dev);
925 if (ret) {
926 dev_err(dev, "could not register v4l2 device.\n");
927 goto fail_irq;
928 }
929
930 drv_data = (struct hdmi_driver_data *)
931 platform_get_device_id(pdev)->driver_data;
932 phy_adapter = i2c_get_adapter(drv_data->hdmiphy_bus);
933 if (phy_adapter == NULL) {
934 dev_err(dev, "adapter request failed\n");
935 ret = -ENXIO;
936 goto fail_vdev;
937 }
938
939 hdmi_dev->phy_sd = v4l2_i2c_new_subdev_board(&hdmi_dev->v4l2_dev,
940 phy_adapter, &hdmiphy_info, NULL);
941 /* on failure or not adapter is no longer useful */
942 i2c_put_adapter(phy_adapter);
943 if (hdmi_dev->phy_sd == NULL) {
944 dev_err(dev, "missing subdev for hdmiphy\n");
945 ret = -ENODEV;
946 goto fail_vdev;
947 }
948
949 clk_enable(hdmi_dev->res.hdmi);
950
951 pm_runtime_enable(dev);
952
953 sd = &hdmi_dev->sd;
954 v4l2_subdev_init(sd, &hdmi_sd_ops);
955 sd->owner = THIS_MODULE;
956
957 strlcpy(sd->name, "s5p-hdmi", sizeof sd->name);
958 hdmi_dev->cur_preset = HDMI_DEFAULT_PRESET;
959 /* FIXME: missing fail preset is not supported */
960 hdmi_dev->cur_conf = hdmi_preset2conf(hdmi_dev->cur_preset);
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 sucessful\n");
966
967 return 0;
968
969 fail_vdev:
970 v4l2_device_unregister(&hdmi_dev->v4l2_dev);
971
972 fail_irq:
973 free_irq(hdmi_dev->irq, hdmi_dev);
974
975 fail_regs:
976 iounmap(hdmi_dev->regs);
977
978 fail_init:
979 hdmi_resources_cleanup(hdmi_dev);
980
981 fail_hdev:
982 kfree(hdmi_dev);
983
984 fail:
985 dev_err(dev, "probe failed\n");
986 return ret;
987 }
988
989 static int __devexit hdmi_remove(struct platform_device *pdev)
990 {
991 struct device *dev = &pdev->dev;
992 struct v4l2_subdev *sd = dev_get_drvdata(dev);
993 struct hdmi_device *hdmi_dev = sd_to_hdmi_dev(sd);
994
995 pm_runtime_disable(dev);
996 clk_disable(hdmi_dev->res.hdmi);
997 v4l2_device_unregister(&hdmi_dev->v4l2_dev);
998 disable_irq(hdmi_dev->irq);
999 free_irq(hdmi_dev->irq, hdmi_dev);
1000 iounmap(hdmi_dev->regs);
1001 hdmi_resources_cleanup(hdmi_dev);
1002 kfree(hdmi_dev);
1003 dev_info(dev, "remove sucessful\n");
1004
1005 return 0;
1006 }
1007
1008 static struct platform_driver hdmi_driver __refdata = {
1009 .probe = hdmi_probe,
1010 .remove = __devexit_p(hdmi_remove),
1011 .id_table = hdmi_driver_types,
1012 .driver = {
1013 .name = "s5p-hdmi",
1014 .owner = THIS_MODULE,
1015 .pm = &hdmi_pm_ops,
1016 }
1017 };
1018
1019 module_platform_driver(hdmi_driver);