1 /*
2 * HDMI TI81xx, TI38xx, TI OMAP4 etc IP driver Library
3 *
4 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
5 * Authors: Yong Zhi
6 * Mythri pk <mythripk@ti.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 as published by
10 * the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program. If not, see <http://www.gnu.org/licenses/>.
19 */
20
21 #define DSS_SUBSYS_NAME "HDMICORE"
22
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/err.h>
26 #include <linux/io.h>
27 #include <linux/interrupt.h>
28 #include <linux/mutex.h>
29 #include <linux/delay.h>
30 #include <linux/platform_device.h>
31 #include <linux/string.h>
32 #include <linux/seq_file.h>
33 #include <linux/sys_soc.h>
34 #include <sound/asound.h>
35 #include <sound/asoundef.h>
36
37 #include "hdmi4_core.h"
38
39 #define HDMI_CORE_AV 0x500
40
hdmi_av_base(struct hdmi_core_data * core)41 static inline void __iomem *hdmi_av_base(struct hdmi_core_data *core)
42 {
43 return core->base + HDMI_CORE_AV;
44 }
45
hdmi_core_ddc_init(struct hdmi_core_data * core)46 static int hdmi_core_ddc_init(struct hdmi_core_data *core)
47 {
48 void __iomem *base = core->base;
49
50 /* Turn on CLK for DDC */
51 REG_FLD_MOD(base, HDMI_CORE_AV_DPD, 0x7, 2, 0);
52
53 /* IN_PROG */
54 if (REG_GET(base, HDMI_CORE_DDC_STATUS, 4, 4) == 1) {
55 /* Abort transaction */
56 REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0xf, 3, 0);
57 /* IN_PROG */
58 if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
59 4, 4, 0) != 0) {
60 DSSERR("Timeout aborting DDC transaction\n");
61 return -ETIMEDOUT;
62 }
63 }
64
65 /* Clk SCL Devices */
66 REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0xA, 3, 0);
67
68 /* HDMI_CORE_DDC_STATUS_IN_PROG */
69 if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
70 4, 4, 0) != 0) {
71 DSSERR("Timeout starting SCL clock\n");
72 return -ETIMEDOUT;
73 }
74
75 /* Clear FIFO */
76 REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x9, 3, 0);
77
78 /* HDMI_CORE_DDC_STATUS_IN_PROG */
79 if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
80 4, 4, 0) != 0) {
81 DSSERR("Timeout clearing DDC fifo\n");
82 return -ETIMEDOUT;
83 }
84
85 return 0;
86 }
87
hdmi_core_ddc_edid(struct hdmi_core_data * core,u8 * pedid,int ext)88 static int hdmi_core_ddc_edid(struct hdmi_core_data *core,
89 u8 *pedid, int ext)
90 {
91 void __iomem *base = core->base;
92 u32 i;
93 char checksum;
94 u32 offset = 0;
95
96 /* HDMI_CORE_DDC_STATUS_IN_PROG */
97 if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
98 4, 4, 0) != 0) {
99 DSSERR("Timeout waiting DDC to be ready\n");
100 return -ETIMEDOUT;
101 }
102
103 if (ext % 2 != 0)
104 offset = 0x80;
105
106 /* Load Segment Address Register */
107 REG_FLD_MOD(base, HDMI_CORE_DDC_SEGM, ext / 2, 7, 0);
108
109 /* Load Slave Address Register */
110 REG_FLD_MOD(base, HDMI_CORE_DDC_ADDR, 0xA0 >> 1, 7, 1);
111
112 /* Load Offset Address Register */
113 REG_FLD_MOD(base, HDMI_CORE_DDC_OFFSET, offset, 7, 0);
114
115 /* Load Byte Count */
116 REG_FLD_MOD(base, HDMI_CORE_DDC_COUNT1, 0x80, 7, 0);
117 REG_FLD_MOD(base, HDMI_CORE_DDC_COUNT2, 0x0, 1, 0);
118
119 /* Set DDC_CMD */
120 if (ext)
121 REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x4, 3, 0);
122 else
123 REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x2, 3, 0);
124
125 /* HDMI_CORE_DDC_STATUS_BUS_LOW */
126 if (REG_GET(base, HDMI_CORE_DDC_STATUS, 6, 6) == 1) {
127 DSSERR("I2C Bus Low?\n");
128 return -EIO;
129 }
130 /* HDMI_CORE_DDC_STATUS_NO_ACK */
131 if (REG_GET(base, HDMI_CORE_DDC_STATUS, 5, 5) == 1) {
132 DSSERR("I2C No Ack\n");
133 return -EIO;
134 }
135
136 for (i = 0; i < 0x80; ++i) {
137 int t;
138
139 /* IN_PROG */
140 if (REG_GET(base, HDMI_CORE_DDC_STATUS, 4, 4) == 0) {
141 DSSERR("operation stopped when reading edid\n");
142 return -EIO;
143 }
144
145 t = 0;
146 /* FIFO_EMPTY */
147 while (REG_GET(base, HDMI_CORE_DDC_STATUS, 2, 2) == 1) {
148 if (t++ > 10000) {
149 DSSERR("timeout reading edid\n");
150 return -ETIMEDOUT;
151 }
152 udelay(1);
153 }
154
155 pedid[i] = REG_GET(base, HDMI_CORE_DDC_DATA, 7, 0);
156 }
157
158 checksum = 0;
159 for (i = 0; i < 0x80; ++i)
160 checksum += pedid[i];
161
162 if (checksum != 0) {
163 DSSERR("E-EDID checksum failed!!\n");
164 return -EIO;
165 }
166
167 return 0;
168 }
169
hdmi4_read_edid(struct hdmi_core_data * core,u8 * edid,int len)170 int hdmi4_read_edid(struct hdmi_core_data *core, u8 *edid, int len)
171 {
172 int r, l;
173
174 if (len < 128)
175 return -EINVAL;
176
177 r = hdmi_core_ddc_init(core);
178 if (r)
179 return r;
180
181 r = hdmi_core_ddc_edid(core, edid, 0);
182 if (r)
183 return r;
184
185 l = 128;
186
187 if (len >= 128 * 2 && edid[0x7e] > 0) {
188 r = hdmi_core_ddc_edid(core, edid + 0x80, 1);
189 if (r)
190 return r;
191 l += 128;
192 }
193
194 return l;
195 }
196
hdmi_core_init(struct hdmi_core_video_config * video_cfg)197 static void hdmi_core_init(struct hdmi_core_video_config *video_cfg)
198 {
199 DSSDBG("Enter hdmi_core_init\n");
200
201 /* video core */
202 video_cfg->ip_bus_width = HDMI_INPUT_8BIT;
203 video_cfg->op_dither_truc = HDMI_OUTPUTTRUNCATION_8BIT;
204 video_cfg->deep_color_pkt = HDMI_DEEPCOLORPACKECTDISABLE;
205 video_cfg->pkt_mode = HDMI_PACKETMODERESERVEDVALUE;
206 video_cfg->hdmi_dvi = HDMI_DVI;
207 video_cfg->tclk_sel_clkmult = HDMI_FPLL10IDCK;
208 }
209
hdmi4_core_powerdown_disable(struct hdmi_core_data * core)210 void hdmi4_core_powerdown_disable(struct hdmi_core_data *core)
211 {
212 DSSDBG("Enter hdmi4_core_powerdown_disable\n");
213 REG_FLD_MOD(core->base, HDMI_CORE_SYS_SYS_CTRL1, 0x1, 0, 0);
214 }
215
hdmi_core_swreset_release(struct hdmi_core_data * core)216 static void hdmi_core_swreset_release(struct hdmi_core_data *core)
217 {
218 DSSDBG("Enter hdmi_core_swreset_release\n");
219 REG_FLD_MOD(core->base, HDMI_CORE_SYS_SRST, 0x0, 0, 0);
220 }
221
hdmi_core_swreset_assert(struct hdmi_core_data * core)222 static void hdmi_core_swreset_assert(struct hdmi_core_data *core)
223 {
224 DSSDBG("Enter hdmi_core_swreset_assert\n");
225 REG_FLD_MOD(core->base, HDMI_CORE_SYS_SRST, 0x1, 0, 0);
226 }
227
228 /* HDMI_CORE_VIDEO_CONFIG */
hdmi_core_video_config(struct hdmi_core_data * core,struct hdmi_core_video_config * cfg)229 static void hdmi_core_video_config(struct hdmi_core_data *core,
230 struct hdmi_core_video_config *cfg)
231 {
232 u32 r = 0;
233 void __iomem *core_sys_base = core->base;
234 void __iomem *core_av_base = hdmi_av_base(core);
235
236 /* sys_ctrl1 default configuration not tunable */
237 r = hdmi_read_reg(core_sys_base, HDMI_CORE_SYS_SYS_CTRL1);
238 r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_VEN_FOLLOWVSYNC, 5, 5);
239 r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_HEN_FOLLOWHSYNC, 4, 4);
240 r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_BSEL_24BITBUS, 2, 2);
241 r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_EDGE_RISINGEDGE, 1, 1);
242 hdmi_write_reg(core_sys_base, HDMI_CORE_SYS_SYS_CTRL1, r);
243
244 REG_FLD_MOD(core_sys_base,
245 HDMI_CORE_SYS_VID_ACEN, cfg->ip_bus_width, 7, 6);
246
247 /* Vid_Mode */
248 r = hdmi_read_reg(core_sys_base, HDMI_CORE_SYS_VID_MODE);
249
250 /* dither truncation configuration */
251 if (cfg->op_dither_truc > HDMI_OUTPUTTRUNCATION_12BIT) {
252 r = FLD_MOD(r, cfg->op_dither_truc - 3, 7, 6);
253 r = FLD_MOD(r, 1, 5, 5);
254 } else {
255 r = FLD_MOD(r, cfg->op_dither_truc, 7, 6);
256 r = FLD_MOD(r, 0, 5, 5);
257 }
258 hdmi_write_reg(core_sys_base, HDMI_CORE_SYS_VID_MODE, r);
259
260 /* HDMI_Ctrl */
261 r = hdmi_read_reg(core_av_base, HDMI_CORE_AV_HDMI_CTRL);
262 r = FLD_MOD(r, cfg->deep_color_pkt, 6, 6);
263 r = FLD_MOD(r, cfg->pkt_mode, 5, 3);
264 r = FLD_MOD(r, cfg->hdmi_dvi, 0, 0);
265 hdmi_write_reg(core_av_base, HDMI_CORE_AV_HDMI_CTRL, r);
266
267 /* TMDS_CTRL */
268 REG_FLD_MOD(core_sys_base,
269 HDMI_CORE_SYS_TMDS_CTRL, cfg->tclk_sel_clkmult, 6, 5);
270 }
271
hdmi_core_write_avi_infoframe(struct hdmi_core_data * core,struct hdmi_avi_infoframe * frame)272 static void hdmi_core_write_avi_infoframe(struct hdmi_core_data *core,
273 struct hdmi_avi_infoframe *frame)
274 {
275 void __iomem *av_base = hdmi_av_base(core);
276 u8 data[HDMI_INFOFRAME_SIZE(AVI)];
277 int i;
278
279 hdmi_avi_infoframe_pack(frame, data, sizeof(data));
280
281 print_hex_dump_debug("AVI: ", DUMP_PREFIX_NONE, 16, 1, data,
282 HDMI_INFOFRAME_SIZE(AVI), false);
283
284 for (i = 0; i < sizeof(data); ++i) {
285 hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_BASE + i * 4,
286 data[i]);
287 }
288 }
289
hdmi_core_av_packet_config(struct hdmi_core_data * core,struct hdmi_core_packet_enable_repeat repeat_cfg)290 static void hdmi_core_av_packet_config(struct hdmi_core_data *core,
291 struct hdmi_core_packet_enable_repeat repeat_cfg)
292 {
293 /* enable/repeat the infoframe */
294 hdmi_write_reg(hdmi_av_base(core), HDMI_CORE_AV_PB_CTRL1,
295 (repeat_cfg.audio_pkt << 5) |
296 (repeat_cfg.audio_pkt_repeat << 4) |
297 (repeat_cfg.avi_infoframe << 1) |
298 (repeat_cfg.avi_infoframe_repeat));
299
300 /* enable/repeat the packet */
301 hdmi_write_reg(hdmi_av_base(core), HDMI_CORE_AV_PB_CTRL2,
302 (repeat_cfg.gen_cntrl_pkt << 3) |
303 (repeat_cfg.gen_cntrl_pkt_repeat << 2) |
304 (repeat_cfg.generic_pkt << 1) |
305 (repeat_cfg.generic_pkt_repeat));
306 }
307
hdmi4_configure(struct hdmi_core_data * core,struct hdmi_wp_data * wp,struct hdmi_config * cfg)308 void hdmi4_configure(struct hdmi_core_data *core,
309 struct hdmi_wp_data *wp, struct hdmi_config *cfg)
310 {
311 /* HDMI */
312 struct videomode vm;
313 struct hdmi_video_format video_format;
314 /* HDMI core */
315 struct hdmi_core_video_config v_core_cfg;
316 struct hdmi_core_packet_enable_repeat repeat_cfg = { 0 };
317
318 hdmi_core_init(&v_core_cfg);
319
320 hdmi_wp_init_vid_fmt_timings(&video_format, &vm, cfg);
321
322 hdmi_wp_video_config_timing(wp, &vm);
323
324 /* video config */
325 video_format.packing_mode = HDMI_PACK_24b_RGB_YUV444_YUV422;
326
327 hdmi_wp_video_config_format(wp, &video_format);
328
329 hdmi_wp_video_config_interface(wp, &vm);
330
331 /*
332 * configure core video part
333 * set software reset in the core
334 */
335 hdmi_core_swreset_assert(core);
336
337 v_core_cfg.pkt_mode = HDMI_PACKETMODE24BITPERPIXEL;
338 v_core_cfg.hdmi_dvi = cfg->hdmi_dvi_mode;
339
340 hdmi_core_video_config(core, &v_core_cfg);
341
342 /* release software reset in the core */
343 hdmi_core_swreset_release(core);
344
345 if (cfg->hdmi_dvi_mode == HDMI_HDMI) {
346 hdmi_core_write_avi_infoframe(core, &cfg->infoframe);
347
348 /* enable/repeat the infoframe */
349 repeat_cfg.avi_infoframe = HDMI_PACKETENABLE;
350 repeat_cfg.avi_infoframe_repeat = HDMI_PACKETREPEATON;
351 /* wakeup */
352 repeat_cfg.audio_pkt = HDMI_PACKETENABLE;
353 repeat_cfg.audio_pkt_repeat = HDMI_PACKETREPEATON;
354 }
355
356 hdmi_core_av_packet_config(core, repeat_cfg);
357 }
358
hdmi4_core_dump(struct hdmi_core_data * core,struct seq_file * s)359 void hdmi4_core_dump(struct hdmi_core_data *core, struct seq_file *s)
360 {
361 int i;
362
363 #define CORE_REG(i, name) name(i)
364 #define DUMPCORE(r) seq_printf(s, "%-35s %08x\n", #r,\
365 hdmi_read_reg(core->base, r))
366 #define DUMPCOREAV(r) seq_printf(s, "%-35s %08x\n", #r,\
367 hdmi_read_reg(hdmi_av_base(core), r))
368 #define DUMPCOREAV2(i, r) seq_printf(s, "%s[%d]%*s %08x\n", #r, i, \
369 (i < 10) ? 32 - (int)strlen(#r) : 31 - (int)strlen(#r), " ", \
370 hdmi_read_reg(hdmi_av_base(core), CORE_REG(i, r)))
371
372 DUMPCORE(HDMI_CORE_SYS_VND_IDL);
373 DUMPCORE(HDMI_CORE_SYS_DEV_IDL);
374 DUMPCORE(HDMI_CORE_SYS_DEV_IDH);
375 DUMPCORE(HDMI_CORE_SYS_DEV_REV);
376 DUMPCORE(HDMI_CORE_SYS_SRST);
377 DUMPCORE(HDMI_CORE_SYS_SYS_CTRL1);
378 DUMPCORE(HDMI_CORE_SYS_SYS_STAT);
379 DUMPCORE(HDMI_CORE_SYS_SYS_CTRL3);
380 DUMPCORE(HDMI_CORE_SYS_DE_DLY);
381 DUMPCORE(HDMI_CORE_SYS_DE_CTRL);
382 DUMPCORE(HDMI_CORE_SYS_DE_TOP);
383 DUMPCORE(HDMI_CORE_SYS_DE_CNTL);
384 DUMPCORE(HDMI_CORE_SYS_DE_CNTH);
385 DUMPCORE(HDMI_CORE_SYS_DE_LINL);
386 DUMPCORE(HDMI_CORE_SYS_DE_LINH_1);
387 DUMPCORE(HDMI_CORE_SYS_HRES_L);
388 DUMPCORE(HDMI_CORE_SYS_HRES_H);
389 DUMPCORE(HDMI_CORE_SYS_VRES_L);
390 DUMPCORE(HDMI_CORE_SYS_VRES_H);
391 DUMPCORE(HDMI_CORE_SYS_IADJUST);
392 DUMPCORE(HDMI_CORE_SYS_POLDETECT);
393 DUMPCORE(HDMI_CORE_SYS_HWIDTH1);
394 DUMPCORE(HDMI_CORE_SYS_HWIDTH2);
395 DUMPCORE(HDMI_CORE_SYS_VWIDTH);
396 DUMPCORE(HDMI_CORE_SYS_VID_CTRL);
397 DUMPCORE(HDMI_CORE_SYS_VID_ACEN);
398 DUMPCORE(HDMI_CORE_SYS_VID_MODE);
399 DUMPCORE(HDMI_CORE_SYS_VID_BLANK1);
400 DUMPCORE(HDMI_CORE_SYS_VID_BLANK3);
401 DUMPCORE(HDMI_CORE_SYS_VID_BLANK1);
402 DUMPCORE(HDMI_CORE_SYS_DC_HEADER);
403 DUMPCORE(HDMI_CORE_SYS_VID_DITHER);
404 DUMPCORE(HDMI_CORE_SYS_RGB2XVYCC_CT);
405 DUMPCORE(HDMI_CORE_SYS_R2Y_COEFF_LOW);
406 DUMPCORE(HDMI_CORE_SYS_R2Y_COEFF_UP);
407 DUMPCORE(HDMI_CORE_SYS_G2Y_COEFF_LOW);
408 DUMPCORE(HDMI_CORE_SYS_G2Y_COEFF_UP);
409 DUMPCORE(HDMI_CORE_SYS_B2Y_COEFF_LOW);
410 DUMPCORE(HDMI_CORE_SYS_B2Y_COEFF_UP);
411 DUMPCORE(HDMI_CORE_SYS_R2CB_COEFF_LOW);
412 DUMPCORE(HDMI_CORE_SYS_R2CB_COEFF_UP);
413 DUMPCORE(HDMI_CORE_SYS_G2CB_COEFF_LOW);
414 DUMPCORE(HDMI_CORE_SYS_G2CB_COEFF_UP);
415 DUMPCORE(HDMI_CORE_SYS_B2CB_COEFF_LOW);
416 DUMPCORE(HDMI_CORE_SYS_B2CB_COEFF_UP);
417 DUMPCORE(HDMI_CORE_SYS_R2CR_COEFF_LOW);
418 DUMPCORE(HDMI_CORE_SYS_R2CR_COEFF_UP);
419 DUMPCORE(HDMI_CORE_SYS_G2CR_COEFF_LOW);
420 DUMPCORE(HDMI_CORE_SYS_G2CR_COEFF_UP);
421 DUMPCORE(HDMI_CORE_SYS_B2CR_COEFF_LOW);
422 DUMPCORE(HDMI_CORE_SYS_B2CR_COEFF_UP);
423 DUMPCORE(HDMI_CORE_SYS_RGB_OFFSET_LOW);
424 DUMPCORE(HDMI_CORE_SYS_RGB_OFFSET_UP);
425 DUMPCORE(HDMI_CORE_SYS_Y_OFFSET_LOW);
426 DUMPCORE(HDMI_CORE_SYS_Y_OFFSET_UP);
427 DUMPCORE(HDMI_CORE_SYS_CBCR_OFFSET_LOW);
428 DUMPCORE(HDMI_CORE_SYS_CBCR_OFFSET_UP);
429 DUMPCORE(HDMI_CORE_SYS_INTR_STATE);
430 DUMPCORE(HDMI_CORE_SYS_INTR1);
431 DUMPCORE(HDMI_CORE_SYS_INTR2);
432 DUMPCORE(HDMI_CORE_SYS_INTR3);
433 DUMPCORE(HDMI_CORE_SYS_INTR4);
434 DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK1);
435 DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK2);
436 DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK3);
437 DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK4);
438 DUMPCORE(HDMI_CORE_SYS_INTR_CTRL);
439 DUMPCORE(HDMI_CORE_SYS_TMDS_CTRL);
440
441 DUMPCORE(HDMI_CORE_DDC_ADDR);
442 DUMPCORE(HDMI_CORE_DDC_SEGM);
443 DUMPCORE(HDMI_CORE_DDC_OFFSET);
444 DUMPCORE(HDMI_CORE_DDC_COUNT1);
445 DUMPCORE(HDMI_CORE_DDC_COUNT2);
446 DUMPCORE(HDMI_CORE_DDC_STATUS);
447 DUMPCORE(HDMI_CORE_DDC_CMD);
448 DUMPCORE(HDMI_CORE_DDC_DATA);
449
450 DUMPCOREAV(HDMI_CORE_AV_ACR_CTRL);
451 DUMPCOREAV(HDMI_CORE_AV_FREQ_SVAL);
452 DUMPCOREAV(HDMI_CORE_AV_N_SVAL1);
453 DUMPCOREAV(HDMI_CORE_AV_N_SVAL2);
454 DUMPCOREAV(HDMI_CORE_AV_N_SVAL3);
455 DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL1);
456 DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL2);
457 DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL3);
458 DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL1);
459 DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL2);
460 DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL3);
461 DUMPCOREAV(HDMI_CORE_AV_AUD_MODE);
462 DUMPCOREAV(HDMI_CORE_AV_SPDIF_CTRL);
463 DUMPCOREAV(HDMI_CORE_AV_HW_SPDIF_FS);
464 DUMPCOREAV(HDMI_CORE_AV_SWAP_I2S);
465 DUMPCOREAV(HDMI_CORE_AV_SPDIF_ERTH);
466 DUMPCOREAV(HDMI_CORE_AV_I2S_IN_MAP);
467 DUMPCOREAV(HDMI_CORE_AV_I2S_IN_CTRL);
468 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST0);
469 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST1);
470 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST2);
471 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST4);
472 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST5);
473 DUMPCOREAV(HDMI_CORE_AV_ASRC);
474 DUMPCOREAV(HDMI_CORE_AV_I2S_IN_LEN);
475 DUMPCOREAV(HDMI_CORE_AV_HDMI_CTRL);
476 DUMPCOREAV(HDMI_CORE_AV_AUDO_TXSTAT);
477 DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_1);
478 DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_2);
479 DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_3);
480 DUMPCOREAV(HDMI_CORE_AV_TEST_TXCTRL);
481 DUMPCOREAV(HDMI_CORE_AV_DPD);
482 DUMPCOREAV(HDMI_CORE_AV_PB_CTRL1);
483 DUMPCOREAV(HDMI_CORE_AV_PB_CTRL2);
484 DUMPCOREAV(HDMI_CORE_AV_AVI_TYPE);
485 DUMPCOREAV(HDMI_CORE_AV_AVI_VERS);
486 DUMPCOREAV(HDMI_CORE_AV_AVI_LEN);
487 DUMPCOREAV(HDMI_CORE_AV_AVI_CHSUM);
488
489 for (i = 0; i < HDMI_CORE_AV_AVI_DBYTE_NELEMS; i++)
490 DUMPCOREAV2(i, HDMI_CORE_AV_AVI_DBYTE);
491
492 DUMPCOREAV(HDMI_CORE_AV_SPD_TYPE);
493 DUMPCOREAV(HDMI_CORE_AV_SPD_VERS);
494 DUMPCOREAV(HDMI_CORE_AV_SPD_LEN);
495 DUMPCOREAV(HDMI_CORE_AV_SPD_CHSUM);
496
497 for (i = 0; i < HDMI_CORE_AV_SPD_DBYTE_NELEMS; i++)
498 DUMPCOREAV2(i, HDMI_CORE_AV_SPD_DBYTE);
499
500 DUMPCOREAV(HDMI_CORE_AV_AUDIO_TYPE);
501 DUMPCOREAV(HDMI_CORE_AV_AUDIO_VERS);
502 DUMPCOREAV(HDMI_CORE_AV_AUDIO_LEN);
503 DUMPCOREAV(HDMI_CORE_AV_AUDIO_CHSUM);
504
505 for (i = 0; i < HDMI_CORE_AV_AUD_DBYTE_NELEMS; i++)
506 DUMPCOREAV2(i, HDMI_CORE_AV_AUD_DBYTE);
507
508 DUMPCOREAV(HDMI_CORE_AV_MPEG_TYPE);
509 DUMPCOREAV(HDMI_CORE_AV_MPEG_VERS);
510 DUMPCOREAV(HDMI_CORE_AV_MPEG_LEN);
511 DUMPCOREAV(HDMI_CORE_AV_MPEG_CHSUM);
512
513 for (i = 0; i < HDMI_CORE_AV_MPEG_DBYTE_NELEMS; i++)
514 DUMPCOREAV2(i, HDMI_CORE_AV_MPEG_DBYTE);
515
516 for (i = 0; i < HDMI_CORE_AV_GEN_DBYTE_NELEMS; i++)
517 DUMPCOREAV2(i, HDMI_CORE_AV_GEN_DBYTE);
518
519 DUMPCOREAV(HDMI_CORE_AV_CP_BYTE1);
520
521 for (i = 0; i < HDMI_CORE_AV_GEN2_DBYTE_NELEMS; i++)
522 DUMPCOREAV2(i, HDMI_CORE_AV_GEN2_DBYTE);
523
524 DUMPCOREAV(HDMI_CORE_AV_CEC_ADDR_ID);
525 }
526
hdmi_core_audio_config(struct hdmi_core_data * core,struct hdmi_core_audio_config * cfg)527 static void hdmi_core_audio_config(struct hdmi_core_data *core,
528 struct hdmi_core_audio_config *cfg)
529 {
530 u32 r;
531 void __iomem *av_base = hdmi_av_base(core);
532
533 /*
534 * Parameters for generation of Audio Clock Recovery packets
535 */
536 REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL1, cfg->n, 7, 0);
537 REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL2, cfg->n >> 8, 7, 0);
538 REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL3, cfg->n >> 16, 7, 0);
539
540 if (cfg->cts_mode == HDMI_AUDIO_CTS_MODE_SW) {
541 REG_FLD_MOD(av_base, HDMI_CORE_AV_CTS_SVAL1, cfg->cts, 7, 0);
542 REG_FLD_MOD(av_base,
543 HDMI_CORE_AV_CTS_SVAL2, cfg->cts >> 8, 7, 0);
544 REG_FLD_MOD(av_base,
545 HDMI_CORE_AV_CTS_SVAL3, cfg->cts >> 16, 7, 0);
546 } else {
547 REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_1,
548 cfg->aud_par_busclk, 7, 0);
549 REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_2,
550 (cfg->aud_par_busclk >> 8), 7, 0);
551 REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_3,
552 (cfg->aud_par_busclk >> 16), 7, 0);
553 }
554
555 /* Set ACR clock divisor */
556 REG_FLD_MOD(av_base,
557 HDMI_CORE_AV_FREQ_SVAL, cfg->mclk_mode, 2, 0);
558
559 r = hdmi_read_reg(av_base, HDMI_CORE_AV_ACR_CTRL);
560 /*
561 * Use TMDS clock for ACR packets. For devices that use
562 * the MCLK, this is the first part of the MCLK initialization.
563 */
564 r = FLD_MOD(r, 0, 2, 2);
565
566 r = FLD_MOD(r, cfg->en_acr_pkt, 1, 1);
567 r = FLD_MOD(r, cfg->cts_mode, 0, 0);
568 hdmi_write_reg(av_base, HDMI_CORE_AV_ACR_CTRL, r);
569
570 /* For devices using MCLK, this completes its initialization. */
571 if (cfg->use_mclk)
572 REG_FLD_MOD(av_base, HDMI_CORE_AV_ACR_CTRL, 1, 2, 2);
573
574 /* Override of SPDIF sample frequency with value in I2S_CHST4 */
575 REG_FLD_MOD(av_base, HDMI_CORE_AV_SPDIF_CTRL,
576 cfg->fs_override, 1, 1);
577
578 /*
579 * Set IEC-60958-3 channel status word. It is passed to the IP
580 * just as it is received. The user of the driver is responsible
581 * for its contents.
582 */
583 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST0,
584 cfg->iec60958_cfg->status[0]);
585 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST1,
586 cfg->iec60958_cfg->status[1]);
587 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST2,
588 cfg->iec60958_cfg->status[2]);
589 /* yes, this is correct: status[3] goes to CHST4 register */
590 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST4,
591 cfg->iec60958_cfg->status[3]);
592 /* yes, this is correct: status[4] goes to CHST5 register */
593 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST5,
594 cfg->iec60958_cfg->status[4]);
595
596 /* set I2S parameters */
597 r = hdmi_read_reg(av_base, HDMI_CORE_AV_I2S_IN_CTRL);
598 r = FLD_MOD(r, cfg->i2s_cfg.sck_edge_mode, 6, 6);
599 r = FLD_MOD(r, cfg->i2s_cfg.vbit, 4, 4);
600 r = FLD_MOD(r, cfg->i2s_cfg.justification, 2, 2);
601 r = FLD_MOD(r, cfg->i2s_cfg.direction, 1, 1);
602 r = FLD_MOD(r, cfg->i2s_cfg.shift, 0, 0);
603 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_IN_CTRL, r);
604
605 REG_FLD_MOD(av_base, HDMI_CORE_AV_I2S_IN_LEN,
606 cfg->i2s_cfg.in_length_bits, 3, 0);
607
608 /* Audio channels and mode parameters */
609 REG_FLD_MOD(av_base, HDMI_CORE_AV_HDMI_CTRL, cfg->layout, 2, 1);
610 r = hdmi_read_reg(av_base, HDMI_CORE_AV_AUD_MODE);
611 r = FLD_MOD(r, cfg->i2s_cfg.active_sds, 7, 4);
612 r = FLD_MOD(r, cfg->en_dsd_audio, 3, 3);
613 r = FLD_MOD(r, cfg->en_parallel_aud_input, 2, 2);
614 r = FLD_MOD(r, cfg->en_spdif, 1, 1);
615 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_MODE, r);
616
617 /* Audio channel mappings */
618 /* TODO: Make channel mapping dynamic. For now, map channels
619 * in the ALSA order: FL/FR/RL/RR/C/LFE/SL/SR. Remapping is needed as
620 * HDMI speaker order is different. See CEA-861 Section 6.6.2.
621 */
622 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_IN_MAP, 0x78);
623 REG_FLD_MOD(av_base, HDMI_CORE_AV_SWAP_I2S, 1, 5, 5);
624 }
625
hdmi_core_audio_infoframe_cfg(struct hdmi_core_data * core,struct snd_cea_861_aud_if * info_aud)626 static void hdmi_core_audio_infoframe_cfg(struct hdmi_core_data *core,
627 struct snd_cea_861_aud_if *info_aud)
628 {
629 u8 sum = 0, checksum = 0;
630 void __iomem *av_base = hdmi_av_base(core);
631
632 /*
633 * Set audio info frame type, version and length as
634 * described in HDMI 1.4a Section 8.2.2 specification.
635 * Checksum calculation is defined in Section 5.3.5.
636 */
637 hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_TYPE, 0x84);
638 hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_VERS, 0x01);
639 hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_LEN, 0x0a);
640 sum += 0x84 + 0x001 + 0x00a;
641
642 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(0),
643 info_aud->db1_ct_cc);
644 sum += info_aud->db1_ct_cc;
645
646 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(1),
647 info_aud->db2_sf_ss);
648 sum += info_aud->db2_sf_ss;
649
650 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(2), info_aud->db3);
651 sum += info_aud->db3;
652
653 /*
654 * The OMAP HDMI IP requires to use the 8-channel channel code when
655 * transmitting more than two channels.
656 */
657 if (info_aud->db4_ca != 0x00)
658 info_aud->db4_ca = 0x13;
659
660 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(3), info_aud->db4_ca);
661 sum += info_aud->db4_ca;
662
663 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(4),
664 info_aud->db5_dminh_lsv);
665 sum += info_aud->db5_dminh_lsv;
666
667 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(5), 0x00);
668 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(6), 0x00);
669 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(7), 0x00);
670 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(8), 0x00);
671 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(9), 0x00);
672
673 checksum = 0x100 - sum;
674 hdmi_write_reg(av_base,
675 HDMI_CORE_AV_AUDIO_CHSUM, checksum);
676
677 /*
678 * TODO: Add MPEG and SPD enable and repeat cfg when EDID parsing
679 * is available.
680 */
681 }
682
hdmi4_audio_config(struct hdmi_core_data * core,struct hdmi_wp_data * wp,struct omap_dss_audio * audio,u32 pclk)683 int hdmi4_audio_config(struct hdmi_core_data *core, struct hdmi_wp_data *wp,
684 struct omap_dss_audio *audio, u32 pclk)
685 {
686 struct hdmi_audio_format audio_format;
687 struct hdmi_audio_dma audio_dma;
688 struct hdmi_core_audio_config acore;
689 int err, n, cts, channel_count;
690 unsigned int fs_nr;
691 bool word_length_16b = false;
692
693 if (!audio || !audio->iec || !audio->cea || !core)
694 return -EINVAL;
695
696 acore.iec60958_cfg = audio->iec;
697 /*
698 * In the IEC-60958 status word, check if the audio sample word length
699 * is 16-bit as several optimizations can be performed in such case.
700 */
701 if (!(audio->iec->status[4] & IEC958_AES4_CON_MAX_WORDLEN_24))
702 if (audio->iec->status[4] & IEC958_AES4_CON_WORDLEN_20_16)
703 word_length_16b = true;
704
705 /* I2S configuration. See Phillips' specification */
706 if (word_length_16b)
707 acore.i2s_cfg.justification = HDMI_AUDIO_JUSTIFY_LEFT;
708 else
709 acore.i2s_cfg.justification = HDMI_AUDIO_JUSTIFY_RIGHT;
710 /*
711 * The I2S input word length is twice the lenght given in the IEC-60958
712 * status word. If the word size is greater than
713 * 20 bits, increment by one.
714 */
715 acore.i2s_cfg.in_length_bits = audio->iec->status[4]
716 & IEC958_AES4_CON_WORDLEN;
717 if (audio->iec->status[4] & IEC958_AES4_CON_MAX_WORDLEN_24)
718 acore.i2s_cfg.in_length_bits++;
719 acore.i2s_cfg.sck_edge_mode = HDMI_AUDIO_I2S_SCK_EDGE_RISING;
720 acore.i2s_cfg.vbit = HDMI_AUDIO_I2S_VBIT_FOR_PCM;
721 acore.i2s_cfg.direction = HDMI_AUDIO_I2S_MSB_SHIFTED_FIRST;
722 acore.i2s_cfg.shift = HDMI_AUDIO_I2S_FIRST_BIT_SHIFT;
723
724 /* convert sample frequency to a number */
725 switch (audio->iec->status[3] & IEC958_AES3_CON_FS) {
726 case IEC958_AES3_CON_FS_32000:
727 fs_nr = 32000;
728 break;
729 case IEC958_AES3_CON_FS_44100:
730 fs_nr = 44100;
731 break;
732 case IEC958_AES3_CON_FS_48000:
733 fs_nr = 48000;
734 break;
735 case IEC958_AES3_CON_FS_88200:
736 fs_nr = 88200;
737 break;
738 case IEC958_AES3_CON_FS_96000:
739 fs_nr = 96000;
740 break;
741 case IEC958_AES3_CON_FS_176400:
742 fs_nr = 176400;
743 break;
744 case IEC958_AES3_CON_FS_192000:
745 fs_nr = 192000;
746 break;
747 default:
748 return -EINVAL;
749 }
750
751 err = hdmi_compute_acr(pclk, fs_nr, &n, &cts);
752
753 /* Audio clock regeneration settings */
754 acore.n = n;
755 acore.cts = cts;
756 if (core->cts_swmode) {
757 acore.aud_par_busclk = 0;
758 acore.cts_mode = HDMI_AUDIO_CTS_MODE_SW;
759 acore.use_mclk = core->audio_use_mclk;
760 } else {
761 acore.aud_par_busclk = (((128 * 31) - 1) << 8);
762 acore.cts_mode = HDMI_AUDIO_CTS_MODE_HW;
763 acore.use_mclk = true;
764 }
765
766 if (acore.use_mclk)
767 acore.mclk_mode = HDMI_AUDIO_MCLK_128FS;
768
769 /* Audio channels settings */
770 channel_count = (audio->cea->db1_ct_cc &
771 CEA861_AUDIO_INFOFRAME_DB1CC) + 1;
772
773 switch (channel_count) {
774 case 2:
775 audio_format.active_chnnls_msk = 0x03;
776 break;
777 case 3:
778 audio_format.active_chnnls_msk = 0x07;
779 break;
780 case 4:
781 audio_format.active_chnnls_msk = 0x0f;
782 break;
783 case 5:
784 audio_format.active_chnnls_msk = 0x1f;
785 break;
786 case 6:
787 audio_format.active_chnnls_msk = 0x3f;
788 break;
789 case 7:
790 audio_format.active_chnnls_msk = 0x7f;
791 break;
792 case 8:
793 audio_format.active_chnnls_msk = 0xff;
794 break;
795 default:
796 return -EINVAL;
797 }
798
799 /*
800 * the HDMI IP needs to enable four stereo channels when transmitting
801 * more than 2 audio channels. Similarly, the channel count in the
802 * Audio InfoFrame has to match the sample_present bits (some channels
803 * are padded with zeroes)
804 */
805 if (channel_count == 2) {
806 audio_format.stereo_channels = HDMI_AUDIO_STEREO_ONECHANNEL;
807 acore.i2s_cfg.active_sds = HDMI_AUDIO_I2S_SD0_EN;
808 acore.layout = HDMI_AUDIO_LAYOUT_2CH;
809 } else {
810 audio_format.stereo_channels = HDMI_AUDIO_STEREO_FOURCHANNELS;
811 acore.i2s_cfg.active_sds = HDMI_AUDIO_I2S_SD0_EN |
812 HDMI_AUDIO_I2S_SD1_EN | HDMI_AUDIO_I2S_SD2_EN |
813 HDMI_AUDIO_I2S_SD3_EN;
814 acore.layout = HDMI_AUDIO_LAYOUT_8CH;
815 audio->cea->db1_ct_cc = 7;
816 }
817
818 acore.en_spdif = false;
819 /* use sample frequency from channel status word */
820 acore.fs_override = true;
821 /* enable ACR packets */
822 acore.en_acr_pkt = true;
823 /* disable direct streaming digital audio */
824 acore.en_dsd_audio = false;
825 /* use parallel audio interface */
826 acore.en_parallel_aud_input = true;
827
828 /* DMA settings */
829 if (word_length_16b)
830 audio_dma.transfer_size = 0x10;
831 else
832 audio_dma.transfer_size = 0x20;
833 audio_dma.block_size = 0xC0;
834 audio_dma.mode = HDMI_AUDIO_TRANSF_DMA;
835 audio_dma.fifo_threshold = 0x20; /* in number of samples */
836
837 /* audio FIFO format settings */
838 if (word_length_16b) {
839 audio_format.samples_per_word = HDMI_AUDIO_ONEWORD_TWOSAMPLES;
840 audio_format.sample_size = HDMI_AUDIO_SAMPLE_16BITS;
841 audio_format.justification = HDMI_AUDIO_JUSTIFY_LEFT;
842 } else {
843 audio_format.samples_per_word = HDMI_AUDIO_ONEWORD_ONESAMPLE;
844 audio_format.sample_size = HDMI_AUDIO_SAMPLE_24BITS;
845 audio_format.justification = HDMI_AUDIO_JUSTIFY_RIGHT;
846 }
847 audio_format.type = HDMI_AUDIO_TYPE_LPCM;
848 audio_format.sample_order = HDMI_AUDIO_SAMPLE_LEFT_FIRST;
849 /* disable start/stop signals of IEC 60958 blocks */
850 audio_format.en_sig_blk_strt_end = HDMI_AUDIO_BLOCK_SIG_STARTEND_ON;
851
852 /* configure DMA and audio FIFO format*/
853 hdmi_wp_audio_config_dma(wp, &audio_dma);
854 hdmi_wp_audio_config_format(wp, &audio_format);
855
856 /* configure the core*/
857 hdmi_core_audio_config(core, &acore);
858
859 /* configure CEA 861 audio infoframe*/
860 hdmi_core_audio_infoframe_cfg(core, audio->cea);
861
862 return 0;
863 }
864
hdmi4_audio_start(struct hdmi_core_data * core,struct hdmi_wp_data * wp)865 int hdmi4_audio_start(struct hdmi_core_data *core, struct hdmi_wp_data *wp)
866 {
867 REG_FLD_MOD(hdmi_av_base(core),
868 HDMI_CORE_AV_AUD_MODE, true, 0, 0);
869
870 hdmi_wp_audio_core_req_enable(wp, true);
871
872 return 0;
873 }
874
hdmi4_audio_stop(struct hdmi_core_data * core,struct hdmi_wp_data * wp)875 void hdmi4_audio_stop(struct hdmi_core_data *core, struct hdmi_wp_data *wp)
876 {
877 REG_FLD_MOD(hdmi_av_base(core),
878 HDMI_CORE_AV_AUD_MODE, false, 0, 0);
879
880 hdmi_wp_audio_core_req_enable(wp, false);
881 }
882
883 struct hdmi4_features {
884 bool cts_swmode;
885 bool audio_use_mclk;
886 };
887
888 static const struct hdmi4_features hdmi4430_es1_features = {
889 .cts_swmode = false,
890 .audio_use_mclk = false,
891 };
892
893 static const struct hdmi4_features hdmi4430_es2_features = {
894 .cts_swmode = true,
895 .audio_use_mclk = false,
896 };
897
898 static const struct hdmi4_features hdmi4_features = {
899 .cts_swmode = true,
900 .audio_use_mclk = true,
901 };
902
903 static const struct soc_device_attribute hdmi4_soc_devices[] = {
904 {
905 .machine = "OMAP4430",
906 .revision = "ES1.?",
907 .data = &hdmi4430_es1_features,
908 },
909 {
910 .machine = "OMAP4430",
911 .revision = "ES2.?",
912 .data = &hdmi4430_es2_features,
913 },
914 {
915 .family = "OMAP4",
916 .data = &hdmi4_features,
917 },
918 { /* sentinel */ }
919 };
920
hdmi4_core_init(struct platform_device * pdev,struct hdmi_core_data * core)921 int hdmi4_core_init(struct platform_device *pdev, struct hdmi_core_data *core)
922 {
923 const struct hdmi4_features *features;
924 struct resource *res;
925 const struct soc_device_attribute *soc;
926
927 soc = soc_device_match(hdmi4_soc_devices);
928 if (!soc)
929 return -ENODEV;
930
931 features = soc->data;
932 core->cts_swmode = features->cts_swmode;
933 core->audio_use_mclk = features->audio_use_mclk;
934
935 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core");
936 core->base = devm_ioremap_resource(&pdev->dev, res);
937 if (IS_ERR(core->base))
938 return PTR_ERR(core->base);
939
940 return 0;
941 }
942
