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-rw-r--r--drivers/video/omap2/dss/hdmi.c1332
1 files changed, 1332 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c
new file mode 100644
index 000000000000..0d44f070ef36
--- /dev/null
+++ b/drivers/video/omap2/dss/hdmi.c
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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 <plat/display.h>
33
34#include "dss.h"
35#include "hdmi.h"
36
37static struct {
38 struct mutex lock;
39 struct omap_display_platform_data *pdata;
40 struct platform_device *pdev;
41 void __iomem *base_wp; /* HDMI wrapper */
42 int code;
43 int mode;
44 u8 edid[HDMI_EDID_MAX_LENGTH];
45 u8 edid_set;
46 bool custom_set;
47 struct hdmi_config cfg;
48} hdmi;
49
50/*
51 * Logic for the below structure :
52 * user enters the CEA or VESA timings by specifying the HDMI/DVI code.
53 * There is a correspondence between CEA/VESA timing and code, please
54 * refer to section 6.3 in HDMI 1.3 specification for timing code.
55 *
56 * In the below structure, cea_vesa_timings corresponds to all OMAP4
57 * supported CEA and VESA timing values.code_cea corresponds to the CEA
58 * code, It is used to get the timing from cea_vesa_timing array.Similarly
59 * with code_vesa. Code_index is used for back mapping, that is once EDID
60 * is read from the TV, EDID is parsed to find the timing values and then
61 * map it to corresponding CEA or VESA index.
62 */
63
64static const struct hdmi_timings cea_vesa_timings[OMAP_HDMI_TIMINGS_NB] = {
65 { {640, 480, 25200, 96, 16, 48, 2, 10, 33} , 0 , 0},
66 { {1280, 720, 74250, 40, 440, 220, 5, 5, 20}, 1, 1},
67 { {1280, 720, 74250, 40, 110, 220, 5, 5, 20}, 1, 1},
68 { {720, 480, 27027, 62, 16, 60, 6, 9, 30}, 0, 0},
69 { {2880, 576, 108000, 256, 48, 272, 5, 5, 39}, 0, 0},
70 { {1440, 240, 27027, 124, 38, 114, 3, 4, 15}, 0, 0},
71 { {1440, 288, 27000, 126, 24, 138, 3, 2, 19}, 0, 0},
72 { {1920, 540, 74250, 44, 528, 148, 5, 2, 15}, 1, 1},
73 { {1920, 540, 74250, 44, 88, 148, 5, 2, 15}, 1, 1},
74 { {1920, 1080, 148500, 44, 88, 148, 5, 4, 36}, 1, 1},
75 { {720, 576, 27000, 64, 12, 68, 5, 5, 39}, 0, 0},
76 { {1440, 576, 54000, 128, 24, 136, 5, 5, 39}, 0, 0},
77 { {1920, 1080, 148500, 44, 528, 148, 5, 4, 36}, 1, 1},
78 { {2880, 480, 108108, 248, 64, 240, 6, 9, 30}, 0, 0},
79 { {1920, 1080, 74250, 44, 638, 148, 5, 4, 36}, 1, 1},
80 /* VESA From Here */
81 { {640, 480, 25175, 96, 16, 48, 2 , 11, 31}, 0, 0},
82 { {800, 600, 40000, 128, 40, 88, 4 , 1, 23}, 1, 1},
83 { {848, 480, 33750, 112, 16, 112, 8 , 6, 23}, 1, 1},
84 { {1280, 768, 79500, 128, 64, 192, 7 , 3, 20}, 1, 0},
85 { {1280, 800, 83500, 128, 72, 200, 6 , 3, 22}, 1, 0},
86 { {1360, 768, 85500, 112, 64, 256, 6 , 3, 18}, 1, 1},
87 { {1280, 960, 108000, 112, 96, 312, 3 , 1, 36}, 1, 1},
88 { {1280, 1024, 108000, 112, 48, 248, 3 , 1, 38}, 1, 1},
89 { {1024, 768, 65000, 136, 24, 160, 6, 3, 29}, 0, 0},
90 { {1400, 1050, 121750, 144, 88, 232, 4, 3, 32}, 1, 0},
91 { {1440, 900, 106500, 152, 80, 232, 6, 3, 25}, 1, 0},
92 { {1680, 1050, 146250, 176 , 104, 280, 6, 3, 30}, 1, 0},
93 { {1366, 768, 85500, 143, 70, 213, 3, 3, 24}, 1, 1},
94 { {1920, 1080, 148500, 44, 148, 80, 5, 4, 36}, 1, 1},
95 { {1280, 768, 68250, 32, 48, 80, 7, 3, 12}, 0, 1},
96 { {1400, 1050, 101000, 32, 48, 80, 4, 3, 23}, 0, 1},
97 { {1680, 1050, 119000, 32, 48, 80, 6, 3, 21}, 0, 1},
98 { {1280, 800, 79500, 32, 48, 80, 6, 3, 14}, 0, 1},
99 { {1280, 720, 74250, 40, 110, 220, 5, 5, 20}, 1, 1}
100};
101
102/*
103 * This is a static mapping array which maps the timing values
104 * with corresponding CEA / VESA code
105 */
106static const int code_index[OMAP_HDMI_TIMINGS_NB] = {
107 1, 19, 4, 2, 37, 6, 21, 20, 5, 16, 17, 29, 31, 35, 32,
108 /* <--15 CEA 17--> vesa*/
109 4, 9, 0xE, 0x17, 0x1C, 0x27, 0x20, 0x23, 0x10, 0x2A,
110 0X2F, 0x3A, 0X51, 0X52, 0x16, 0x29, 0x39, 0x1B
111};
112
113/*
114 * This is reverse static mapping which maps the CEA / VESA code
115 * to the corresponding timing values
116 */
117static const int code_cea[39] = {
118 -1, 0, 3, 3, 2, 8, 5, 5, -1, -1,
119 -1, -1, -1, -1, -1, -1, 9, 10, 10, 1,
120 7, 6, 6, -1, -1, -1, -1, -1, -1, 11,
121 11, 12, 14, -1, -1, 13, 13, 4, 4
122};
123
124static const int code_vesa[85] = {
125 -1, -1, -1, -1, 15, -1, -1, -1, -1, 16,
126 -1, -1, -1, -1, 17, -1, 23, -1, -1, -1,
127 -1, -1, 29, 18, -1, -1, -1, 32, 19, -1,
128 -1, -1, 21, -1, -1, 22, -1, -1, -1, 20,
129 -1, 30, 24, -1, -1, -1, -1, 25, -1, -1,
130 -1, -1, -1, -1, -1, -1, -1, 31, 26, -1,
131 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
132 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
133 -1, 27, 28, -1, 33};
134
135static const u8 edid_header[8] = {0x0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x0};
136
137static inline void hdmi_write_reg(const struct hdmi_reg idx, u32 val)
138{
139 __raw_writel(val, hdmi.base_wp + idx.idx);
140}
141
142static inline u32 hdmi_read_reg(const struct hdmi_reg idx)
143{
144 return __raw_readl(hdmi.base_wp + idx.idx);
145}
146
147static inline int hdmi_wait_for_bit_change(const struct hdmi_reg idx,
148 int b2, int b1, u32 val)
149{
150 u32 t = 0;
151 while (val != REG_GET(idx, b2, b1)) {
152 udelay(1);
153 if (t++ > 10000)
154 return !val;
155 }
156 return val;
157}
158
159int hdmi_init_display(struct omap_dss_device *dssdev)
160{
161 DSSDBG("init_display\n");
162
163 return 0;
164}
165
166static int hdmi_pll_init(enum hdmi_clk_refsel refsel, int dcofreq,
167 struct hdmi_pll_info *fmt, u16 sd)
168{
169 u32 r;
170
171 /* PLL start always use manual mode */
172 REG_FLD_MOD(PLLCTRL_PLL_CONTROL, 0x0, 0, 0);
173
174 r = hdmi_read_reg(PLLCTRL_CFG1);
175 r = FLD_MOD(r, fmt->regm, 20, 9); /* CFG1_PLL_REGM */
176 r = FLD_MOD(r, fmt->regn, 8, 1); /* CFG1_PLL_REGN */
177
178 hdmi_write_reg(PLLCTRL_CFG1, r);
179
180 r = hdmi_read_reg(PLLCTRL_CFG2);
181
182 r = FLD_MOD(r, 0x0, 12, 12); /* PLL_HIGHFREQ divide by 2 */
183 r = FLD_MOD(r, 0x1, 13, 13); /* PLL_REFEN */
184 r = FLD_MOD(r, 0x0, 14, 14); /* PHY_CLKINEN de-assert during locking */
185
186 if (dcofreq) {
187 /* divider programming for frequency beyond 1000Mhz */
188 REG_FLD_MOD(PLLCTRL_CFG3, sd, 17, 10);
189 r = FLD_MOD(r, 0x4, 3, 1); /* 1000MHz and 2000MHz */
190 } else {
191 r = FLD_MOD(r, 0x2, 3, 1); /* 500MHz and 1000MHz */
192 }
193
194 hdmi_write_reg(PLLCTRL_CFG2, r);
195
196 r = hdmi_read_reg(PLLCTRL_CFG4);
197 r = FLD_MOD(r, fmt->regm2, 24, 18);
198 r = FLD_MOD(r, fmt->regmf, 17, 0);
199
200 hdmi_write_reg(PLLCTRL_CFG4, r);
201
202 /* go now */
203 REG_FLD_MOD(PLLCTRL_PLL_GO, 0x1, 0, 0);
204
205 /* wait for bit change */
206 if (hdmi_wait_for_bit_change(PLLCTRL_PLL_GO, 0, 0, 1) != 1) {
207 DSSERR("PLL GO bit not set\n");
208 return -ETIMEDOUT;
209 }
210
211 /* Wait till the lock bit is set in PLL status */
212 if (hdmi_wait_for_bit_change(PLLCTRL_PLL_STATUS, 1, 1, 1) != 1) {
213 DSSWARN("cannot lock PLL\n");
214 DSSWARN("CFG1 0x%x\n",
215 hdmi_read_reg(PLLCTRL_CFG1));
216 DSSWARN("CFG2 0x%x\n",
217 hdmi_read_reg(PLLCTRL_CFG2));
218 DSSWARN("CFG4 0x%x\n",
219 hdmi_read_reg(PLLCTRL_CFG4));
220 return -ETIMEDOUT;
221 }
222
223 DSSDBG("PLL locked!\n");
224
225 return 0;
226}
227
228/* PHY_PWR_CMD */
229static int hdmi_set_phy_pwr(enum hdmi_phy_pwr val)
230{
231 /* Command for power control of HDMI PHY */
232 REG_FLD_MOD(HDMI_WP_PWR_CTRL, val, 7, 6);
233
234 /* Status of the power control of HDMI PHY */
235 if (hdmi_wait_for_bit_change(HDMI_WP_PWR_CTRL, 5, 4, val) != val) {
236 DSSERR("Failed to set PHY power mode to %d\n", val);
237 return -ETIMEDOUT;
238 }
239
240 return 0;
241}
242
243/* PLL_PWR_CMD */
244static int hdmi_set_pll_pwr(enum hdmi_pll_pwr val)
245{
246 /* Command for power control of HDMI PLL */
247 REG_FLD_MOD(HDMI_WP_PWR_CTRL, val, 3, 2);
248
249 /* wait till PHY_PWR_STATUS is set */
250 if (hdmi_wait_for_bit_change(HDMI_WP_PWR_CTRL, 1, 0, val) != val) {
251 DSSERR("Failed to set PHY_PWR_STATUS\n");
252 return -ETIMEDOUT;
253 }
254
255 return 0;
256}
257
258static int hdmi_pll_reset(void)
259{
260 /* SYSRESET controlled by power FSM */
261 REG_FLD_MOD(PLLCTRL_PLL_CONTROL, 0x0, 3, 3);
262
263 /* READ 0x0 reset is in progress */
264 if (hdmi_wait_for_bit_change(PLLCTRL_PLL_STATUS, 0, 0, 1) != 1) {
265 DSSERR("Failed to sysreset PLL\n");
266 return -ETIMEDOUT;
267 }
268
269 return 0;
270}
271
272static int hdmi_phy_init(void)
273{
274 u16 r = 0;
275
276 r = hdmi_set_phy_pwr(HDMI_PHYPWRCMD_LDOON);
277 if (r)
278 return r;
279
280 r = hdmi_set_phy_pwr(HDMI_PHYPWRCMD_TXON);
281 if (r)
282 return r;
283
284 /*
285 * Read address 0 in order to get the SCP reset done completed
286 * Dummy access performed to make sure reset is done
287 */
288 hdmi_read_reg(HDMI_TXPHY_TX_CTRL);
289
290 /*
291 * Write to phy address 0 to configure the clock
292 * use HFBITCLK write HDMI_TXPHY_TX_CONTROL_FREQOUT field
293 */
294 REG_FLD_MOD(HDMI_TXPHY_TX_CTRL, 0x1, 31, 30);
295
296 /* Write to phy address 1 to start HDMI line (TXVALID and TMDSCLKEN) */
297 hdmi_write_reg(HDMI_TXPHY_DIGITAL_CTRL, 0xF0000000);
298
299 /* Setup max LDO voltage */
300 REG_FLD_MOD(HDMI_TXPHY_POWER_CTRL, 0xB, 3, 0);
301
302 /* Write to phy address 3 to change the polarity control */
303 REG_FLD_MOD(HDMI_TXPHY_PAD_CFG_CTRL, 0x1, 27, 27);
304
305 return 0;
306}
307
308static int hdmi_wait_softreset(void)
309{
310 /* reset W1 */
311 REG_FLD_MOD(HDMI_WP_SYSCONFIG, 0x1, 0, 0);
312
313 /* wait till SOFTRESET == 0 */
314 if (hdmi_wait_for_bit_change(HDMI_WP_SYSCONFIG, 0, 0, 0) != 0) {
315 DSSERR("sysconfig reset failed\n");
316 return -ETIMEDOUT;
317 }
318
319 return 0;
320}
321
322static int hdmi_pll_program(struct hdmi_pll_info *fmt)
323{
324 u16 r = 0;
325 enum hdmi_clk_refsel refsel;
326
327 /* wait for wrapper reset */
328 r = hdmi_wait_softreset();
329 if (r)
330 return r;
331
332 r = hdmi_set_pll_pwr(HDMI_PLLPWRCMD_ALLOFF);
333 if (r)
334 return r;
335
336 r = hdmi_set_pll_pwr(HDMI_PLLPWRCMD_BOTHON_ALLCLKS);
337 if (r)
338 return r;
339
340 r = hdmi_pll_reset();
341 if (r)
342 return r;
343
344 refsel = HDMI_REFSEL_SYSCLK;
345
346 r = hdmi_pll_init(refsel, fmt->dcofreq, fmt, fmt->regsd);
347 if (r)
348 return r;
349
350 return 0;
351}
352
353static void hdmi_phy_off(void)
354{
355 hdmi_set_phy_pwr(HDMI_PHYPWRCMD_OFF);
356}
357
358static int hdmi_core_ddc_edid(u8 *pedid, int ext)
359{
360 u32 i, j;
361 char checksum = 0;
362 u32 offset = 0;
363
364 /* Turn on CLK for DDC */
365 REG_FLD_MOD(HDMI_CORE_AV_DPD, 0x7, 2, 0);
366
367 /*
368 * SW HACK : Without the Delay DDC(i2c bus) reads 0 values /
369 * right shifted values( The behavior is not consistent and seen only
370 * with some TV's)
371 */
372 usleep_range(800, 1000);
373
374 if (!ext) {
375 /* Clk SCL Devices */
376 REG_FLD_MOD(HDMI_CORE_DDC_CMD, 0xA, 3, 0);
377
378 /* HDMI_CORE_DDC_STATUS_IN_PROG */
379 if (hdmi_wait_for_bit_change(HDMI_CORE_DDC_STATUS,
380 4, 4, 0) != 0) {
381 DSSERR("Failed to program DDC\n");
382 return -ETIMEDOUT;
383 }
384
385 /* Clear FIFO */
386 REG_FLD_MOD(HDMI_CORE_DDC_CMD, 0x9, 3, 0);
387
388 /* HDMI_CORE_DDC_STATUS_IN_PROG */
389 if (hdmi_wait_for_bit_change(HDMI_CORE_DDC_STATUS,
390 4, 4, 0) != 0) {
391 DSSERR("Failed to program DDC\n");
392 return -ETIMEDOUT;
393 }
394
395 } else {
396 if (ext % 2 != 0)
397 offset = 0x80;
398 }
399
400 /* Load Segment Address Register */
401 REG_FLD_MOD(HDMI_CORE_DDC_SEGM, ext/2, 7, 0);
402
403 /* Load Slave Address Register */
404 REG_FLD_MOD(HDMI_CORE_DDC_ADDR, 0xA0 >> 1, 7, 1);
405
406 /* Load Offset Address Register */
407 REG_FLD_MOD(HDMI_CORE_DDC_OFFSET, offset, 7, 0);
408
409 /* Load Byte Count */
410 REG_FLD_MOD(HDMI_CORE_DDC_COUNT1, 0x80, 7, 0);
411 REG_FLD_MOD(HDMI_CORE_DDC_COUNT2, 0x0, 1, 0);
412
413 /* Set DDC_CMD */
414 if (ext)
415 REG_FLD_MOD(HDMI_CORE_DDC_CMD, 0x4, 3, 0);
416 else
417 REG_FLD_MOD(HDMI_CORE_DDC_CMD, 0x2, 3, 0);
418
419 /* HDMI_CORE_DDC_STATUS_BUS_LOW */
420 if (REG_GET(HDMI_CORE_DDC_STATUS, 6, 6) == 1) {
421 DSSWARN("I2C Bus Low?\n");
422 return -EIO;
423 }
424 /* HDMI_CORE_DDC_STATUS_NO_ACK */
425 if (REG_GET(HDMI_CORE_DDC_STATUS, 5, 5) == 1) {
426 DSSWARN("I2C No Ack\n");
427 return -EIO;
428 }
429
430 i = ext * 128;
431 j = 0;
432 while (((REG_GET(HDMI_CORE_DDC_STATUS, 4, 4) == 1) ||
433 (REG_GET(HDMI_CORE_DDC_STATUS, 2, 2) == 0)) &&
434 j < 128) {
435
436 if (REG_GET(HDMI_CORE_DDC_STATUS, 2, 2) == 0) {
437 /* FIFO not empty */
438 pedid[i++] = REG_GET(HDMI_CORE_DDC_DATA, 7, 0);
439 j++;
440 }
441 }
442
443 for (j = 0; j < 128; j++)
444 checksum += pedid[j];
445
446 if (checksum != 0) {
447 DSSERR("E-EDID checksum failed!!\n");
448 return -EIO;
449 }
450
451 return 0;
452}
453
454static int read_edid(u8 *pedid, u16 max_length)
455{
456 int r = 0, n = 0, i = 0;
457 int max_ext_blocks = (max_length / 128) - 1;
458
459 r = hdmi_core_ddc_edid(pedid, 0);
460 if (r) {
461 return r;
462 } else {
463 n = pedid[0x7e];
464
465 /*
466 * README: need to comply with max_length set by the caller.
467 * Better implementation should be to allocate necessary
468 * memory to store EDID according to nb_block field found
469 * in first block
470 */
471 if (n > max_ext_blocks)
472 n = max_ext_blocks;
473
474 for (i = 1; i <= n; i++) {
475 r = hdmi_core_ddc_edid(pedid, i);
476 if (r)
477 return r;
478 }
479 }
480 return 0;
481}
482
483static int get_timings_index(void)
484{
485 int code;
486
487 if (hdmi.mode == 0)
488 code = code_vesa[hdmi.code];
489 else
490 code = code_cea[hdmi.code];
491
492 if (code == -1) {
493 /* HDMI code 4 corresponds to 640 * 480 VGA */
494 hdmi.code = 4;
495 /* DVI mode 1 corresponds to HDMI 0 to DVI */
496 hdmi.mode = HDMI_DVI;
497
498 code = code_vesa[hdmi.code];
499 }
500 return code;
501}
502
503static struct hdmi_cm hdmi_get_code(struct omap_video_timings *timing)
504{
505 int i = 0, code = -1, temp_vsync = 0, temp_hsync = 0;
506 int timing_vsync = 0, timing_hsync = 0;
507 struct omap_video_timings temp;
508 struct hdmi_cm cm = {-1};
509 DSSDBG("hdmi_get_code\n");
510
511 for (i = 0; i < OMAP_HDMI_TIMINGS_NB; i++) {
512 temp = cea_vesa_timings[i].timings;
513 if ((temp.pixel_clock == timing->pixel_clock) &&
514 (temp.x_res == timing->x_res) &&
515 (temp.y_res == timing->y_res)) {
516
517 temp_hsync = temp.hfp + temp.hsw + temp.hbp;
518 timing_hsync = timing->hfp + timing->hsw + timing->hbp;
519 temp_vsync = temp.vfp + temp.vsw + temp.vbp;
520 timing_vsync = timing->vfp + timing->vsw + timing->vbp;
521
522 DSSDBG("temp_hsync = %d , temp_vsync = %d"
523 "timing_hsync = %d, timing_vsync = %d\n",
524 temp_hsync, temp_hsync,
525 timing_hsync, timing_vsync);
526
527 if ((temp_hsync == timing_hsync) &&
528 (temp_vsync == timing_vsync)) {
529 code = i;
530 cm.code = code_index[i];
531 if (code < 14)
532 cm.mode = HDMI_HDMI;
533 else
534 cm.mode = HDMI_DVI;
535 DSSDBG("Hdmi_code = %d mode = %d\n",
536 cm.code, cm.mode);
537 break;
538 }
539 }
540 }
541
542 return cm;
543}
544
545static void get_horz_vert_timing_info(int current_descriptor_addrs, u8 *edid ,
546 struct omap_video_timings *timings)
547{
548 /* X and Y resolution */
549 timings->x_res = (((edid[current_descriptor_addrs + 4] & 0xF0) << 4) |
550 edid[current_descriptor_addrs + 2]);
551 timings->y_res = (((edid[current_descriptor_addrs + 7] & 0xF0) << 4) |
552 edid[current_descriptor_addrs + 5]);
553
554 timings->pixel_clock = ((edid[current_descriptor_addrs + 1] << 8) |
555 edid[current_descriptor_addrs]);
556
557 timings->pixel_clock = 10 * timings->pixel_clock;
558
559 /* HORIZONTAL FRONT PORCH */
560 timings->hfp = edid[current_descriptor_addrs + 8] |
561 ((edid[current_descriptor_addrs + 11] & 0xc0) << 2);
562 /* HORIZONTAL SYNC WIDTH */
563 timings->hsw = edid[current_descriptor_addrs + 9] |
564 ((edid[current_descriptor_addrs + 11] & 0x30) << 4);
565 /* HORIZONTAL BACK PORCH */
566 timings->hbp = (((edid[current_descriptor_addrs + 4] & 0x0F) << 8) |
567 edid[current_descriptor_addrs + 3]) -
568 (timings->hfp + timings->hsw);
569 /* VERTICAL FRONT PORCH */
570 timings->vfp = ((edid[current_descriptor_addrs + 10] & 0xF0) >> 4) |
571 ((edid[current_descriptor_addrs + 11] & 0x0f) << 2);
572 /* VERTICAL SYNC WIDTH */
573 timings->vsw = (edid[current_descriptor_addrs + 10] & 0x0F) |
574 ((edid[current_descriptor_addrs + 11] & 0x03) << 4);
575 /* VERTICAL BACK PORCH */
576 timings->vbp = (((edid[current_descriptor_addrs + 7] & 0x0F) << 8) |
577 edid[current_descriptor_addrs + 6]) -
578 (timings->vfp + timings->vsw);
579
580}
581
582/* Description : This function gets the resolution information from EDID */
583static void get_edid_timing_data(u8 *edid)
584{
585 u8 count;
586 u16 current_descriptor_addrs;
587 struct hdmi_cm cm;
588 struct omap_video_timings edid_timings;
589
590 /* seach block 0, there are 4 DTDs arranged in priority order */
591 for (count = 0; count < EDID_SIZE_BLOCK0_TIMING_DESCRIPTOR; count++) {
592 current_descriptor_addrs =
593 EDID_DESCRIPTOR_BLOCK0_ADDRESS +
594 count * EDID_TIMING_DESCRIPTOR_SIZE;
595 get_horz_vert_timing_info(current_descriptor_addrs,
596 edid, &edid_timings);
597 cm = hdmi_get_code(&edid_timings);
598 DSSDBG("Block0[%d] value matches code = %d , mode = %d\n",
599 count, cm.code, cm.mode);
600 if (cm.code == -1) {
601 continue;
602 } else {
603 hdmi.code = cm.code;
604 hdmi.mode = cm.mode;
605 DSSDBG("code = %d , mode = %d\n",
606 hdmi.code, hdmi.mode);
607 return;
608 }
609 }
610 if (edid[0x7e] != 0x00) {
611 for (count = 0; count < EDID_SIZE_BLOCK1_TIMING_DESCRIPTOR;
612 count++) {
613 current_descriptor_addrs =
614 EDID_DESCRIPTOR_BLOCK1_ADDRESS +
615 count * EDID_TIMING_DESCRIPTOR_SIZE;
616 get_horz_vert_timing_info(current_descriptor_addrs,
617 edid, &edid_timings);
618 cm = hdmi_get_code(&edid_timings);
619 DSSDBG("Block1[%d] value matches code = %d, mode = %d",
620 count, cm.code, cm.mode);
621 if (cm.code == -1) {
622 continue;
623 } else {
624 hdmi.code = cm.code;
625 hdmi.mode = cm.mode;
626 DSSDBG("code = %d , mode = %d\n",
627 hdmi.code, hdmi.mode);
628 return;
629 }
630 }
631 }
632
633 DSSINFO("no valid timing found , falling back to VGA\n");
634 hdmi.code = 4; /* setting default value of 640 480 VGA */
635 hdmi.mode = HDMI_DVI;
636}
637
638static void hdmi_read_edid(struct omap_video_timings *dp)
639{
640 int ret = 0, code;
641
642 memset(hdmi.edid, 0, HDMI_EDID_MAX_LENGTH);
643
644 if (!hdmi.edid_set)
645 ret = read_edid(hdmi.edid, HDMI_EDID_MAX_LENGTH);
646
647 if (!ret) {
648 if (!memcmp(hdmi.edid, edid_header, sizeof(edid_header))) {
649 /* search for timings of default resolution */
650 get_edid_timing_data(hdmi.edid);
651 hdmi.edid_set = true;
652 }
653 } else {
654 DSSWARN("failed to read E-EDID\n");
655 }
656
657 if (!hdmi.edid_set) {
658 DSSINFO("fallback to VGA\n");
659 hdmi.code = 4; /* setting default value of 640 480 VGA */
660 hdmi.mode = HDMI_DVI;
661 }
662
663 code = get_timings_index();
664
665 *dp = cea_vesa_timings[code].timings;
666}
667
668static void hdmi_core_init(struct hdmi_core_video_config *video_cfg,
669 struct hdmi_core_infoframe_avi *avi_cfg,
670 struct hdmi_core_packet_enable_repeat *repeat_cfg)
671{
672 DSSDBG("Enter hdmi_core_init\n");
673
674 /* video core */
675 video_cfg->ip_bus_width = HDMI_INPUT_8BIT;
676 video_cfg->op_dither_truc = HDMI_OUTPUTTRUNCATION_8BIT;
677 video_cfg->deep_color_pkt = HDMI_DEEPCOLORPACKECTDISABLE;
678 video_cfg->pkt_mode = HDMI_PACKETMODERESERVEDVALUE;
679 video_cfg->hdmi_dvi = HDMI_DVI;
680 video_cfg->tclk_sel_clkmult = HDMI_FPLL10IDCK;
681
682 /* info frame */
683 avi_cfg->db1_format = 0;
684 avi_cfg->db1_active_info = 0;
685 avi_cfg->db1_bar_info_dv = 0;
686 avi_cfg->db1_scan_info = 0;
687 avi_cfg->db2_colorimetry = 0;
688 avi_cfg->db2_aspect_ratio = 0;
689 avi_cfg->db2_active_fmt_ar = 0;
690 avi_cfg->db3_itc = 0;
691 avi_cfg->db3_ec = 0;
692 avi_cfg->db3_q_range = 0;
693 avi_cfg->db3_nup_scaling = 0;
694 avi_cfg->db4_videocode = 0;
695 avi_cfg->db5_pixel_repeat = 0;
696 avi_cfg->db6_7_line_eoftop = 0 ;
697 avi_cfg->db8_9_line_sofbottom = 0;
698 avi_cfg->db10_11_pixel_eofleft = 0;
699 avi_cfg->db12_13_pixel_sofright = 0;
700
701 /* packet enable and repeat */
702 repeat_cfg->audio_pkt = 0;
703 repeat_cfg->audio_pkt_repeat = 0;
704 repeat_cfg->avi_infoframe = 0;
705 repeat_cfg->avi_infoframe_repeat = 0;
706 repeat_cfg->gen_cntrl_pkt = 0;
707 repeat_cfg->gen_cntrl_pkt_repeat = 0;
708 repeat_cfg->generic_pkt = 0;
709 repeat_cfg->generic_pkt_repeat = 0;
710}
711
712static void hdmi_core_powerdown_disable(void)
713{
714 DSSDBG("Enter hdmi_core_powerdown_disable\n");
715 REG_FLD_MOD(HDMI_CORE_CTRL1, 0x0, 0, 0);
716}
717
718static void hdmi_core_swreset_release(void)
719{
720 DSSDBG("Enter hdmi_core_swreset_release\n");
721 REG_FLD_MOD(HDMI_CORE_SYS_SRST, 0x0, 0, 0);
722}
723
724static void hdmi_core_swreset_assert(void)
725{
726 DSSDBG("Enter hdmi_core_swreset_assert\n");
727 REG_FLD_MOD(HDMI_CORE_SYS_SRST, 0x1, 0, 0);
728}
729
730/* DSS_HDMI_CORE_VIDEO_CONFIG */
731static void hdmi_core_video_config(struct hdmi_core_video_config *cfg)
732{
733 u32 r = 0;
734
735 /* sys_ctrl1 default configuration not tunable */
736 r = hdmi_read_reg(HDMI_CORE_CTRL1);
737 r = FLD_MOD(r, HDMI_CORE_CTRL1_VEN_FOLLOWVSYNC, 5, 5);
738 r = FLD_MOD(r, HDMI_CORE_CTRL1_HEN_FOLLOWHSYNC, 4, 4);
739 r = FLD_MOD(r, HDMI_CORE_CTRL1_BSEL_24BITBUS, 2, 2);
740 r = FLD_MOD(r, HDMI_CORE_CTRL1_EDGE_RISINGEDGE, 1, 1);
741 hdmi_write_reg(HDMI_CORE_CTRL1, r);
742
743 REG_FLD_MOD(HDMI_CORE_SYS_VID_ACEN, cfg->ip_bus_width, 7, 6);
744
745 /* Vid_Mode */
746 r = hdmi_read_reg(HDMI_CORE_SYS_VID_MODE);
747
748 /* dither truncation configuration */
749 if (cfg->op_dither_truc > HDMI_OUTPUTTRUNCATION_12BIT) {
750 r = FLD_MOD(r, cfg->op_dither_truc - 3, 7, 6);
751 r = FLD_MOD(r, 1, 5, 5);
752 } else {
753 r = FLD_MOD(r, cfg->op_dither_truc, 7, 6);
754 r = FLD_MOD(r, 0, 5, 5);
755 }
756 hdmi_write_reg(HDMI_CORE_SYS_VID_MODE, r);
757
758 /* HDMI_Ctrl */
759 r = hdmi_read_reg(HDMI_CORE_AV_HDMI_CTRL);
760 r = FLD_MOD(r, cfg->deep_color_pkt, 6, 6);
761 r = FLD_MOD(r, cfg->pkt_mode, 5, 3);
762 r = FLD_MOD(r, cfg->hdmi_dvi, 0, 0);
763 hdmi_write_reg(HDMI_CORE_AV_HDMI_CTRL, r);
764
765 /* TMDS_CTRL */
766 REG_FLD_MOD(HDMI_CORE_SYS_TMDS_CTRL,
767 cfg->tclk_sel_clkmult, 6, 5);
768}
769
770static void hdmi_core_aux_infoframe_avi_config(
771 struct hdmi_core_infoframe_avi info_avi)
772{
773 u32 val;
774 char sum = 0, checksum = 0;
775
776 sum += 0x82 + 0x002 + 0x00D;
777 hdmi_write_reg(HDMI_CORE_AV_AVI_TYPE, 0x082);
778 hdmi_write_reg(HDMI_CORE_AV_AVI_VERS, 0x002);
779 hdmi_write_reg(HDMI_CORE_AV_AVI_LEN, 0x00D);
780
781 val = (info_avi.db1_format << 5) |
782 (info_avi.db1_active_info << 4) |
783 (info_avi.db1_bar_info_dv << 2) |
784 (info_avi.db1_scan_info);
785 hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(0), val);
786 sum += val;
787
788 val = (info_avi.db2_colorimetry << 6) |
789 (info_avi.db2_aspect_ratio << 4) |
790 (info_avi.db2_active_fmt_ar);
791 hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(1), val);
792 sum += val;
793
794 val = (info_avi.db3_itc << 7) |
795 (info_avi.db3_ec << 4) |
796 (info_avi.db3_q_range << 2) |
797 (info_avi.db3_nup_scaling);
798 hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(2), val);
799 sum += val;
800
801 hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(3), info_avi.db4_videocode);
802 sum += info_avi.db4_videocode;
803
804 val = info_avi.db5_pixel_repeat;
805 hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(4), val);
806 sum += val;
807
808 val = info_avi.db6_7_line_eoftop & 0x00FF;
809 hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(5), val);
810 sum += val;
811
812 val = ((info_avi.db6_7_line_eoftop >> 8) & 0x00FF);
813 hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(6), val);
814 sum += val;
815
816 val = info_avi.db8_9_line_sofbottom & 0x00FF;
817 hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(7), val);
818 sum += val;
819
820 val = ((info_avi.db8_9_line_sofbottom >> 8) & 0x00FF);
821 hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(8), val);
822 sum += val;
823
824 val = info_avi.db10_11_pixel_eofleft & 0x00FF;
825 hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(9), val);
826 sum += val;
827
828 val = ((info_avi.db10_11_pixel_eofleft >> 8) & 0x00FF);
829 hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(10), val);
830 sum += val;
831
832 val = info_avi.db12_13_pixel_sofright & 0x00FF;
833 hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(11), val);
834 sum += val;
835
836 val = ((info_avi.db12_13_pixel_sofright >> 8) & 0x00FF);
837 hdmi_write_reg(HDMI_CORE_AV_AVI_DBYTE(12), val);
838 sum += val;
839
840 checksum = 0x100 - sum;
841 hdmi_write_reg(HDMI_CORE_AV_AVI_CHSUM, checksum);
842}
843
844static void hdmi_core_av_packet_config(
845 struct hdmi_core_packet_enable_repeat repeat_cfg)
846{
847 /* enable/repeat the infoframe */
848 hdmi_write_reg(HDMI_CORE_AV_PB_CTRL1,
849 (repeat_cfg.audio_pkt << 5) |
850 (repeat_cfg.audio_pkt_repeat << 4) |
851 (repeat_cfg.avi_infoframe << 1) |
852 (repeat_cfg.avi_infoframe_repeat));
853
854 /* enable/repeat the packet */
855 hdmi_write_reg(HDMI_CORE_AV_PB_CTRL2,
856 (repeat_cfg.gen_cntrl_pkt << 3) |
857 (repeat_cfg.gen_cntrl_pkt_repeat << 2) |
858 (repeat_cfg.generic_pkt << 1) |
859 (repeat_cfg.generic_pkt_repeat));
860}
861
862static void hdmi_wp_init(struct omap_video_timings *timings,
863 struct hdmi_video_format *video_fmt,
864 struct hdmi_video_interface *video_int)
865{
866 DSSDBG("Enter hdmi_wp_init\n");
867
868 timings->hbp = 0;
869 timings->hfp = 0;
870 timings->hsw = 0;
871 timings->vbp = 0;
872 timings->vfp = 0;
873 timings->vsw = 0;
874
875 video_fmt->packing_mode = HDMI_PACK_10b_RGB_YUV444;
876 video_fmt->y_res = 0;
877 video_fmt->x_res = 0;
878
879 video_int->vsp = 0;
880 video_int->hsp = 0;
881
882 video_int->interlacing = 0;
883 video_int->tm = 0; /* HDMI_TIMING_SLAVE */
884
885}
886
887static void hdmi_wp_video_start(bool start)
888{
889 REG_FLD_MOD(HDMI_WP_VIDEO_CFG, start, 31, 31);
890}
891
892static void hdmi_wp_video_init_format(struct hdmi_video_format *video_fmt,
893 struct omap_video_timings *timings, struct hdmi_config *param)
894{
895 DSSDBG("Enter hdmi_wp_video_init_format\n");
896
897 video_fmt->y_res = param->timings.timings.y_res;
898 video_fmt->x_res = param->timings.timings.x_res;
899
900 timings->hbp = param->timings.timings.hbp;
901 timings->hfp = param->timings.timings.hfp;
902 timings->hsw = param->timings.timings.hsw;
903 timings->vbp = param->timings.timings.vbp;
904 timings->vfp = param->timings.timings.vfp;
905 timings->vsw = param->timings.timings.vsw;
906}
907
908static void hdmi_wp_video_config_format(
909 struct hdmi_video_format *video_fmt)
910{
911 u32 l = 0;
912
913 REG_FLD_MOD(HDMI_WP_VIDEO_CFG, video_fmt->packing_mode, 10, 8);
914
915 l |= FLD_VAL(video_fmt->y_res, 31, 16);
916 l |= FLD_VAL(video_fmt->x_res, 15, 0);
917 hdmi_write_reg(HDMI_WP_VIDEO_SIZE, l);
918}
919
920static void hdmi_wp_video_config_interface(
921 struct hdmi_video_interface *video_int)
922{
923 u32 r;
924 DSSDBG("Enter hdmi_wp_video_config_interface\n");
925
926 r = hdmi_read_reg(HDMI_WP_VIDEO_CFG);
927 r = FLD_MOD(r, video_int->vsp, 7, 7);
928 r = FLD_MOD(r, video_int->hsp, 6, 6);
929 r = FLD_MOD(r, video_int->interlacing, 3, 3);
930 r = FLD_MOD(r, video_int->tm, 1, 0);
931 hdmi_write_reg(HDMI_WP_VIDEO_CFG, r);
932}
933
934static void hdmi_wp_video_config_timing(
935 struct omap_video_timings *timings)
936{
937 u32 timing_h = 0;
938 u32 timing_v = 0;
939
940 DSSDBG("Enter hdmi_wp_video_config_timing\n");
941
942 timing_h |= FLD_VAL(timings->hbp, 31, 20);
943 timing_h |= FLD_VAL(timings->hfp, 19, 8);
944 timing_h |= FLD_VAL(timings->hsw, 7, 0);
945 hdmi_write_reg(HDMI_WP_VIDEO_TIMING_H, timing_h);
946
947 timing_v |= FLD_VAL(timings->vbp, 31, 20);
948 timing_v |= FLD_VAL(timings->vfp, 19, 8);
949 timing_v |= FLD_VAL(timings->vsw, 7, 0);
950 hdmi_write_reg(HDMI_WP_VIDEO_TIMING_V, timing_v);
951}
952
953static void hdmi_basic_configure(struct hdmi_config *cfg)
954{
955 /* HDMI */
956 struct omap_video_timings video_timing;
957 struct hdmi_video_format video_format;
958 struct hdmi_video_interface video_interface;
959 /* HDMI core */
960 struct hdmi_core_infoframe_avi avi_cfg;
961 struct hdmi_core_video_config v_core_cfg;
962 struct hdmi_core_packet_enable_repeat repeat_cfg;
963
964 hdmi_wp_init(&video_timing, &video_format,
965 &video_interface);
966
967 hdmi_core_init(&v_core_cfg,
968 &avi_cfg,
969 &repeat_cfg);
970
971 hdmi_wp_video_init_format(&video_format,
972 &video_timing, cfg);
973
974 hdmi_wp_video_config_timing(&video_timing);
975
976 /* video config */
977 video_format.packing_mode = HDMI_PACK_24b_RGB_YUV444_YUV422;
978
979 hdmi_wp_video_config_format(&video_format);
980
981 video_interface.vsp = cfg->timings.vsync_pol;
982 video_interface.hsp = cfg->timings.hsync_pol;
983 video_interface.interlacing = cfg->interlace;
984 video_interface.tm = 1 ; /* HDMI_TIMING_MASTER_24BIT */
985
986 hdmi_wp_video_config_interface(&video_interface);
987
988 /*
989 * configure core video part
990 * set software reset in the core
991 */
992 hdmi_core_swreset_assert();
993
994 /* power down off */
995 hdmi_core_powerdown_disable();
996
997 v_core_cfg.pkt_mode = HDMI_PACKETMODE24BITPERPIXEL;
998 v_core_cfg.hdmi_dvi = cfg->cm.mode;
999
1000 hdmi_core_video_config(&v_core_cfg);
1001
1002 /* release software reset in the core */
1003 hdmi_core_swreset_release();
1004
1005 /*
1006 * configure packet
1007 * info frame video see doc CEA861-D page 65
1008 */
1009 avi_cfg.db1_format = HDMI_INFOFRAME_AVI_DB1Y_RGB;
1010 avi_cfg.db1_active_info =
1011 HDMI_INFOFRAME_AVI_DB1A_ACTIVE_FORMAT_OFF;
1012 avi_cfg.db1_bar_info_dv = HDMI_INFOFRAME_AVI_DB1B_NO;
1013 avi_cfg.db1_scan_info = HDMI_INFOFRAME_AVI_DB1S_0;
1014 avi_cfg.db2_colorimetry = HDMI_INFOFRAME_AVI_DB2C_NO;
1015 avi_cfg.db2_aspect_ratio = HDMI_INFOFRAME_AVI_DB2M_NO;
1016 avi_cfg.db2_active_fmt_ar = HDMI_INFOFRAME_AVI_DB2R_SAME;
1017 avi_cfg.db3_itc = HDMI_INFOFRAME_AVI_DB3ITC_NO;
1018 avi_cfg.db3_ec = HDMI_INFOFRAME_AVI_DB3EC_XVYUV601;
1019 avi_cfg.db3_q_range = HDMI_INFOFRAME_AVI_DB3Q_DEFAULT;
1020 avi_cfg.db3_nup_scaling = HDMI_INFOFRAME_AVI_DB3SC_NO;
1021 avi_cfg.db4_videocode = cfg->cm.code;
1022 avi_cfg.db5_pixel_repeat = HDMI_INFOFRAME_AVI_DB5PR_NO;
1023 avi_cfg.db6_7_line_eoftop = 0;
1024 avi_cfg.db8_9_line_sofbottom = 0;
1025 avi_cfg.db10_11_pixel_eofleft = 0;
1026 avi_cfg.db12_13_pixel_sofright = 0;
1027
1028 hdmi_core_aux_infoframe_avi_config(avi_cfg);
1029
1030 /* enable/repeat the infoframe */
1031 repeat_cfg.avi_infoframe = HDMI_PACKETENABLE;
1032 repeat_cfg.avi_infoframe_repeat = HDMI_PACKETREPEATON;
1033 /* wakeup */
1034 repeat_cfg.audio_pkt = HDMI_PACKETENABLE;
1035 repeat_cfg.audio_pkt_repeat = HDMI_PACKETREPEATON;
1036 hdmi_core_av_packet_config(repeat_cfg);
1037}
1038
1039static void update_hdmi_timings(struct hdmi_config *cfg,
1040 struct omap_video_timings *timings, int code)
1041{
1042 cfg->timings.timings.x_res = timings->x_res;
1043 cfg->timings.timings.y_res = timings->y_res;
1044 cfg->timings.timings.hbp = timings->hbp;
1045 cfg->timings.timings.hfp = timings->hfp;
1046 cfg->timings.timings.hsw = timings->hsw;
1047 cfg->timings.timings.vbp = timings->vbp;
1048 cfg->timings.timings.vfp = timings->vfp;
1049 cfg->timings.timings.vsw = timings->vsw;
1050 cfg->timings.timings.pixel_clock = timings->pixel_clock;
1051 cfg->timings.vsync_pol = cea_vesa_timings[code].vsync_pol;
1052 cfg->timings.hsync_pol = cea_vesa_timings[code].hsync_pol;
1053}
1054
1055static void hdmi_compute_pll(unsigned long clkin, int phy,
1056 int n, struct hdmi_pll_info *pi)
1057{
1058 unsigned long refclk;
1059 u32 mf;
1060
1061 /*
1062 * Input clock is predivided by N + 1
1063 * out put of which is reference clk
1064 */
1065 refclk = clkin / (n + 1);
1066 pi->regn = n;
1067
1068 /*
1069 * multiplier is pixel_clk/ref_clk
1070 * Multiplying by 100 to avoid fractional part removal
1071 */
1072 pi->regm = (phy * 100/(refclk))/100;
1073 pi->regm2 = 1;
1074
1075 /*
1076 * fractional multiplier is remainder of the difference between
1077 * multiplier and actual phy(required pixel clock thus should be
1078 * multiplied by 2^18(262144) divided by the reference clock
1079 */
1080 mf = (phy - pi->regm * refclk) * 262144;
1081 pi->regmf = mf/(refclk);
1082
1083 /*
1084 * Dcofreq should be set to 1 if required pixel clock
1085 * is greater than 1000MHz
1086 */
1087 pi->dcofreq = phy > 1000 * 100;
1088 pi->regsd = ((pi->regm * clkin / 10) / ((n + 1) * 250) + 5) / 10;
1089
1090 DSSDBG("M = %d Mf = %d\n", pi->regm, pi->regmf);
1091 DSSDBG("range = %d sd = %d\n", pi->dcofreq, pi->regsd);
1092}
1093
1094static void hdmi_enable_clocks(int enable)
1095{
1096 if (enable)
1097 dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK |
1098 DSS_CLK_SYSCK | DSS_CLK_VIDFCK);
1099 else
1100 dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK |
1101 DSS_CLK_SYSCK | DSS_CLK_VIDFCK);
1102}
1103
1104static int hdmi_power_on(struct omap_dss_device *dssdev)
1105{
1106 int r, code = 0;
1107 struct hdmi_pll_info pll_data;
1108 struct omap_video_timings *p;
1109 int clkin, n, phy;
1110
1111 hdmi_enable_clocks(1);
1112
1113 dispc_enable_channel(OMAP_DSS_CHANNEL_DIGIT, 0);
1114
1115 p = &dssdev->panel.timings;
1116
1117 DSSDBG("hdmi_power_on x_res= %d y_res = %d\n",
1118 dssdev->panel.timings.x_res,
1119 dssdev->panel.timings.y_res);
1120
1121 if (!hdmi.custom_set) {
1122 DSSDBG("Read EDID as no EDID is not set on poweron\n");
1123 hdmi_read_edid(p);
1124 }
1125 code = get_timings_index();
1126 dssdev->panel.timings = cea_vesa_timings[code].timings;
1127 update_hdmi_timings(&hdmi.cfg, p, code);
1128
1129 clkin = 3840; /* 38.4 MHz */
1130 n = 15; /* this is a constant for our math */
1131 phy = p->pixel_clock;
1132
1133 hdmi_compute_pll(clkin, phy, n, &pll_data);
1134
1135 hdmi_wp_video_start(0);
1136
1137 /* config the PLL and PHY first */
1138 r = hdmi_pll_program(&pll_data);
1139 if (r) {
1140 DSSDBG("Failed to lock PLL\n");
1141 goto err;
1142 }
1143
1144 r = hdmi_phy_init();
1145 if (r) {
1146 DSSDBG("Failed to start PHY\n");
1147 goto err;
1148 }
1149
1150 hdmi.cfg.cm.mode = hdmi.mode;
1151 hdmi.cfg.cm.code = hdmi.code;
1152 hdmi_basic_configure(&hdmi.cfg);
1153
1154 /* Make selection of HDMI in DSS */
1155 dss_select_hdmi_venc_clk_source(DSS_HDMI_M_PCLK);
1156
1157 /* Select the dispc clock source as PRCM clock, to ensure that it is not
1158 * DSI PLL source as the clock selected by DSI PLL might not be
1159 * sufficient for the resolution selected / that can be changed
1160 * dynamically by user. This can be moved to single location , say
1161 * Boardfile.
1162 */
1163 dss_select_dispc_clk_source(DSS_CLK_SRC_FCK);
1164
1165 /* bypass TV gamma table */
1166 dispc_enable_gamma_table(0);
1167
1168 /* tv size */
1169 dispc_set_digit_size(dssdev->panel.timings.x_res,
1170 dssdev->panel.timings.y_res);
1171
1172 dispc_enable_channel(OMAP_DSS_CHANNEL_DIGIT, 1);
1173
1174 hdmi_wp_video_start(1);
1175
1176 return 0;
1177err:
1178 hdmi_enable_clocks(0);
1179 return -EIO;
1180}
1181
1182static void hdmi_power_off(struct omap_dss_device *dssdev)
1183{
1184 dispc_enable_channel(OMAP_DSS_CHANNEL_DIGIT, 0);
1185
1186 hdmi_wp_video_start(0);
1187 hdmi_phy_off();
1188 hdmi_set_pll_pwr(HDMI_PLLPWRCMD_ALLOFF);
1189 hdmi_enable_clocks(0);
1190
1191 hdmi.edid_set = 0;
1192}
1193
1194int omapdss_hdmi_display_check_timing(struct omap_dss_device *dssdev,
1195 struct omap_video_timings *timings)
1196{
1197 struct hdmi_cm cm;
1198
1199 cm = hdmi_get_code(timings);
1200 if (cm.code == -1) {
1201 DSSERR("Invalid timing entered\n");
1202 return -EINVAL;
1203 }
1204
1205 return 0;
1206
1207}
1208
1209void omapdss_hdmi_display_set_timing(struct omap_dss_device *dssdev)
1210{
1211 struct hdmi_cm cm;
1212
1213 hdmi.custom_set = 1;
1214 cm = hdmi_get_code(&dssdev->panel.timings);
1215 hdmi.code = cm.code;
1216 hdmi.mode = cm.mode;
1217 omapdss_hdmi_display_enable(dssdev);
1218 hdmi.custom_set = 0;
1219}
1220
1221int omapdss_hdmi_display_enable(struct omap_dss_device *dssdev)
1222{
1223 int r = 0;
1224
1225 DSSDBG("ENTER hdmi_display_enable\n");
1226
1227 mutex_lock(&hdmi.lock);
1228
1229 r = omap_dss_start_device(dssdev);
1230 if (r) {
1231 DSSERR("failed to start device\n");
1232 goto err0;
1233 }
1234
1235 if (dssdev->platform_enable) {
1236 r = dssdev->platform_enable(dssdev);
1237 if (r) {
1238 DSSERR("failed to enable GPIO's\n");
1239 goto err1;
1240 }
1241 }
1242
1243 r = hdmi_power_on(dssdev);
1244 if (r) {
1245 DSSERR("failed to power on device\n");
1246 goto err2;
1247 }
1248
1249 mutex_unlock(&hdmi.lock);
1250 return 0;
1251
1252err2:
1253 if (dssdev->platform_disable)
1254 dssdev->platform_disable(dssdev);
1255err1:
1256 omap_dss_stop_device(dssdev);
1257err0:
1258 mutex_unlock(&hdmi.lock);
1259 return r;
1260}
1261
1262void omapdss_hdmi_display_disable(struct omap_dss_device *dssdev)
1263{
1264 DSSDBG("Enter hdmi_display_disable\n");
1265
1266 mutex_lock(&hdmi.lock);
1267
1268 hdmi_power_off(dssdev);
1269
1270 if (dssdev->platform_disable)
1271 dssdev->platform_disable(dssdev);
1272
1273 omap_dss_stop_device(dssdev);
1274
1275 mutex_unlock(&hdmi.lock);
1276}
1277
1278/* HDMI HW IP initialisation */
1279static int omapdss_hdmihw_probe(struct platform_device *pdev)
1280{
1281 struct resource *hdmi_mem;
1282
1283 hdmi.pdata = pdev->dev.platform_data;
1284 hdmi.pdev = pdev;
1285
1286 mutex_init(&hdmi.lock);
1287
1288 hdmi_mem = platform_get_resource(hdmi.pdev, IORESOURCE_MEM, 0);
1289 if (!hdmi_mem) {
1290 DSSERR("can't get IORESOURCE_MEM HDMI\n");
1291 return -EINVAL;
1292 }
1293
1294 /* Base address taken from platform */
1295 hdmi.base_wp = ioremap(hdmi_mem->start, resource_size(hdmi_mem));
1296 if (!hdmi.base_wp) {
1297 DSSERR("can't ioremap WP\n");
1298 return -ENOMEM;
1299 }
1300
1301 hdmi_panel_init();
1302
1303 return 0;
1304}
1305
1306static int omapdss_hdmihw_remove(struct platform_device *pdev)
1307{
1308 hdmi_panel_exit();
1309
1310 iounmap(hdmi.base_wp);
1311
1312 return 0;
1313}
1314
1315static struct platform_driver omapdss_hdmihw_driver = {
1316 .probe = omapdss_hdmihw_probe,
1317 .remove = omapdss_hdmihw_remove,
1318 .driver = {
1319 .name = "omapdss_hdmi",
1320 .owner = THIS_MODULE,
1321 },
1322};
1323
1324int hdmi_init_platform_driver(void)
1325{
1326 return platform_driver_register(&omapdss_hdmihw_driver);
1327}
1328
1329void hdmi_uninit_platform_driver(void)
1330{
1331 return platform_driver_unregister(&omapdss_hdmihw_driver);
1332}
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-28 08:56:27 -0400