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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / gpu / drm / omapdrm / dss / hdmi4_core.c
blobea5d5c228534d0379bf9a801e3b72482a65ff32c
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * HDMI TI81xx, TI38xx, TI OMAP4 etc IP driver Library
4 *
5 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
6 * Authors: Yong Zhi
7 * Mythri pk <mythripk@ti.com>
8 */
9
10 #define DSS_SUBSYS_NAME "HDMICORE"
11
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/err.h>
15 #include <linux/io.h>
16 #include <linux/interrupt.h>
17 #include <linux/mutex.h>
18 #include <linux/delay.h>
19 #include <linux/platform_device.h>
20 #include <linux/string.h>
21 #include <linux/seq_file.h>
22 #include <linux/sys_soc.h>
23 #include <sound/asound.h>
24 #include <sound/asoundef.h>
25
26 #include "hdmi4_core.h"
27
28 #define HDMI_CORE_AV 0x500
29
30 static inline void __iomem *hdmi_av_base(struct hdmi_core_data *core)
31 {
32 return core->base + HDMI_CORE_AV;
33 }
34
35 static int hdmi_core_ddc_init(struct hdmi_core_data *core)
36 {
37 void __iomem *base = core->base;
38
39 /* Turn on CLK for DDC */
40 REG_FLD_MOD(base, HDMI_CORE_AV_DPD, 0x7, 2, 0);
41
42 /* IN_PROG */
43 if (REG_GET(base, HDMI_CORE_DDC_STATUS, 4, 4) == 1) {
44 /* Abort transaction */
45 REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0xf, 3, 0);
46 /* IN_PROG */
47 if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
48 4, 4, 0) != 0) {
49 DSSERR("Timeout aborting DDC transaction\n");
50 return -ETIMEDOUT;
51 }
52 }
53
54 /* Clk SCL Devices */
55 REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0xA, 3, 0);
56
57 /* HDMI_CORE_DDC_STATUS_IN_PROG */
58 if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
59 4, 4, 0) != 0) {
60 DSSERR("Timeout starting SCL clock\n");
61 return -ETIMEDOUT;
62 }
63
64 /* Clear FIFO */
65 REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x9, 3, 0);
66
67 /* HDMI_CORE_DDC_STATUS_IN_PROG */
68 if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
69 4, 4, 0) != 0) {
70 DSSERR("Timeout clearing DDC fifo\n");
71 return -ETIMEDOUT;
72 }
73
74 return 0;
75 }
76
77 static int hdmi_core_ddc_edid(struct hdmi_core_data *core,
78 u8 *pedid, int ext)
79 {
80 void __iomem *base = core->base;
81 u32 i;
82 char checksum;
83 u32 offset = 0;
84
85 /* HDMI_CORE_DDC_STATUS_IN_PROG */
86 if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
87 4, 4, 0) != 0) {
88 DSSERR("Timeout waiting DDC to be ready\n");
89 return -ETIMEDOUT;
90 }
91
92 if (ext % 2 != 0)
93 offset = 0x80;
94
95 /* Load Segment Address Register */
96 REG_FLD_MOD(base, HDMI_CORE_DDC_SEGM, ext / 2, 7, 0);
97
98 /* Load Slave Address Register */
99 REG_FLD_MOD(base, HDMI_CORE_DDC_ADDR, 0xA0 >> 1, 7, 1);
100
101 /* Load Offset Address Register */
102 REG_FLD_MOD(base, HDMI_CORE_DDC_OFFSET, offset, 7, 0);
103
104 /* Load Byte Count */
105 REG_FLD_MOD(base, HDMI_CORE_DDC_COUNT1, 0x80, 7, 0);
106 REG_FLD_MOD(base, HDMI_CORE_DDC_COUNT2, 0x0, 1, 0);
107
108 /* Set DDC_CMD */
109 if (ext)
110 REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x4, 3, 0);
111 else
112 REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x2, 3, 0);
113
114 /* HDMI_CORE_DDC_STATUS_BUS_LOW */
115 if (REG_GET(base, HDMI_CORE_DDC_STATUS, 6, 6) == 1) {
116 DSSERR("I2C Bus Low?\n");
117 return -EIO;
118 }
119 /* HDMI_CORE_DDC_STATUS_NO_ACK */
120 if (REG_GET(base, HDMI_CORE_DDC_STATUS, 5, 5) == 1) {
121 DSSERR("I2C No Ack\n");
122 return -EIO;
123 }
124
125 for (i = 0; i < 0x80; ++i) {
126 int t;
127
128 /* IN_PROG */
129 if (REG_GET(base, HDMI_CORE_DDC_STATUS, 4, 4) == 0) {
130 DSSERR("operation stopped when reading edid\n");
131 return -EIO;
132 }
133
134 t = 0;
135 /* FIFO_EMPTY */
136 while (REG_GET(base, HDMI_CORE_DDC_STATUS, 2, 2) == 1) {
137 if (t++ > 10000) {
138 DSSERR("timeout reading edid\n");
139 return -ETIMEDOUT;
140 }
141 udelay(1);
142 }
143
144 pedid[i] = REG_GET(base, HDMI_CORE_DDC_DATA, 7, 0);
145 }
146
147 checksum = 0;
148 for (i = 0; i < 0x80; ++i)
149 checksum += pedid[i];
150
151 if (checksum != 0) {
152 DSSERR("E-EDID checksum failed!!\n");
153 return -EIO;
154 }
155
156 return 0;
157 }
158
159 int hdmi4_read_edid(struct hdmi_core_data *core, u8 *edid, int len)
160 {
161 int r, l;
162
163 if (len < 128)
164 return -EINVAL;
165
166 r = hdmi_core_ddc_init(core);
167 if (r)
168 return r;
169
170 r = hdmi_core_ddc_edid(core, edid, 0);
171 if (r)
172 return r;
173
174 l = 128;
175
176 if (len >= 128 * 2 && edid[0x7e] > 0) {
177 r = hdmi_core_ddc_edid(core, edid + 0x80, 1);
178 if (r)
179 return r;
180 l += 128;
181 }
182
183 return l;
184 }
185
186 static void hdmi_core_init(struct hdmi_core_video_config *video_cfg)
187 {
188 DSSDBG("Enter hdmi_core_init\n");
189
190 /* video core */
191 video_cfg->ip_bus_width = HDMI_INPUT_8BIT;
192 video_cfg->op_dither_truc = HDMI_OUTPUTTRUNCATION_8BIT;
193 video_cfg->deep_color_pkt = HDMI_DEEPCOLORPACKECTDISABLE;
194 video_cfg->pkt_mode = HDMI_PACKETMODERESERVEDVALUE;
195 video_cfg->hdmi_dvi = HDMI_DVI;
196 video_cfg->tclk_sel_clkmult = HDMI_FPLL10IDCK;
197 }
198
199 void hdmi4_core_powerdown_disable(struct hdmi_core_data *core)
200 {
201 DSSDBG("Enter hdmi4_core_powerdown_disable\n");
202 REG_FLD_MOD(core->base, HDMI_CORE_SYS_SYS_CTRL1, 0x1, 0, 0);
203 }
204
205 static void hdmi_core_swreset_release(struct hdmi_core_data *core)
206 {
207 DSSDBG("Enter hdmi_core_swreset_release\n");
208 REG_FLD_MOD(core->base, HDMI_CORE_SYS_SRST, 0x0, 0, 0);
209 }
210
211 static void hdmi_core_swreset_assert(struct hdmi_core_data *core)
212 {
213 DSSDBG("Enter hdmi_core_swreset_assert\n");
214 REG_FLD_MOD(core->base, HDMI_CORE_SYS_SRST, 0x1, 0, 0);
215 }
216
217 /* HDMI_CORE_VIDEO_CONFIG */
218 static void hdmi_core_video_config(struct hdmi_core_data *core,
219 struct hdmi_core_video_config *cfg)
220 {
221 u32 r = 0;
222 void __iomem *core_sys_base = core->base;
223 void __iomem *core_av_base = hdmi_av_base(core);
224
225 /* sys_ctrl1 default configuration not tunable */
226 r = hdmi_read_reg(core_sys_base, HDMI_CORE_SYS_SYS_CTRL1);
227 r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_VEN_FOLLOWVSYNC, 5, 5);
228 r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_HEN_FOLLOWHSYNC, 4, 4);
229 r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_BSEL_24BITBUS, 2, 2);
230 r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_EDGE_RISINGEDGE, 1, 1);
231 hdmi_write_reg(core_sys_base, HDMI_CORE_SYS_SYS_CTRL1, r);
232
233 REG_FLD_MOD(core_sys_base,
234 HDMI_CORE_SYS_VID_ACEN, cfg->ip_bus_width, 7, 6);
235
236 /* Vid_Mode */
237 r = hdmi_read_reg(core_sys_base, HDMI_CORE_SYS_VID_MODE);
238
239 /* dither truncation configuration */
240 if (cfg->op_dither_truc > HDMI_OUTPUTTRUNCATION_12BIT) {
241 r = FLD_MOD(r, cfg->op_dither_truc - 3, 7, 6);
242 r = FLD_MOD(r, 1, 5, 5);
243 } else {
244 r = FLD_MOD(r, cfg->op_dither_truc, 7, 6);
245 r = FLD_MOD(r, 0, 5, 5);
246 }
247 hdmi_write_reg(core_sys_base, HDMI_CORE_SYS_VID_MODE, r);
248
249 /* HDMI_Ctrl */
250 r = hdmi_read_reg(core_av_base, HDMI_CORE_AV_HDMI_CTRL);
251 r = FLD_MOD(r, cfg->deep_color_pkt, 6, 6);
252 r = FLD_MOD(r, cfg->pkt_mode, 5, 3);
253 r = FLD_MOD(r, cfg->hdmi_dvi, 0, 0);
254 hdmi_write_reg(core_av_base, HDMI_CORE_AV_HDMI_CTRL, r);
255
256 /* TMDS_CTRL */
257 REG_FLD_MOD(core_sys_base,
258 HDMI_CORE_SYS_TMDS_CTRL, cfg->tclk_sel_clkmult, 6, 5);
259 }
260
261 static void hdmi_core_write_avi_infoframe(struct hdmi_core_data *core,
262 struct hdmi_avi_infoframe *frame)
263 {
264 void __iomem *av_base = hdmi_av_base(core);
265 u8 data[HDMI_INFOFRAME_SIZE(AVI)];
266 int i;
267
268 hdmi_avi_infoframe_pack(frame, data, sizeof(data));
269
270 print_hex_dump_debug("AVI: ", DUMP_PREFIX_NONE, 16, 1, data,
271 HDMI_INFOFRAME_SIZE(AVI), false);
272
273 for (i = 0; i < sizeof(data); ++i) {
274 hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_BASE + i * 4,
275 data[i]);
276 }
277 }
278
279 static void hdmi_core_av_packet_config(struct hdmi_core_data *core,
280 struct hdmi_core_packet_enable_repeat repeat_cfg)
281 {
282 /* enable/repeat the infoframe */
283 hdmi_write_reg(hdmi_av_base(core), HDMI_CORE_AV_PB_CTRL1,
284 (repeat_cfg.audio_pkt << 5) |
285 (repeat_cfg.audio_pkt_repeat << 4) |
286 (repeat_cfg.avi_infoframe << 1) |
287 (repeat_cfg.avi_infoframe_repeat));
288
289 /* enable/repeat the packet */
290 hdmi_write_reg(hdmi_av_base(core), HDMI_CORE_AV_PB_CTRL2,
291 (repeat_cfg.gen_cntrl_pkt << 3) |
292 (repeat_cfg.gen_cntrl_pkt_repeat << 2) |
293 (repeat_cfg.generic_pkt << 1) |
294 (repeat_cfg.generic_pkt_repeat));
295 }
296
297 void hdmi4_configure(struct hdmi_core_data *core,
298 struct hdmi_wp_data *wp, struct hdmi_config *cfg)
299 {
300 /* HDMI */
301 struct videomode vm;
302 struct hdmi_video_format video_format;
303 /* HDMI core */
304 struct hdmi_core_video_config v_core_cfg;
305 struct hdmi_core_packet_enable_repeat repeat_cfg = { 0 };
306
307 hdmi_core_init(&v_core_cfg);
308
309 hdmi_wp_init_vid_fmt_timings(&video_format, &vm, cfg);
310
311 hdmi_wp_video_config_timing(wp, &vm);
312
313 /* video config */
314 video_format.packing_mode = HDMI_PACK_24b_RGB_YUV444_YUV422;
315
316 hdmi_wp_video_config_format(wp, &video_format);
317
318 hdmi_wp_video_config_interface(wp, &vm);
319
320 /*
321 * configure core video part
322 * set software reset in the core
323 */
324 hdmi_core_swreset_assert(core);
325
326 v_core_cfg.pkt_mode = HDMI_PACKETMODE24BITPERPIXEL;
327 v_core_cfg.hdmi_dvi = cfg->hdmi_dvi_mode;
328
329 hdmi_core_video_config(core, &v_core_cfg);
330
331 /* release software reset in the core */
332 hdmi_core_swreset_release(core);
333
334 if (cfg->hdmi_dvi_mode == HDMI_HDMI) {
335 hdmi_core_write_avi_infoframe(core, &cfg->infoframe);
336
337 /* enable/repeat the infoframe */
338 repeat_cfg.avi_infoframe = HDMI_PACKETENABLE;
339 repeat_cfg.avi_infoframe_repeat = HDMI_PACKETREPEATON;
340 /* wakeup */
341 repeat_cfg.audio_pkt = HDMI_PACKETENABLE;
342 repeat_cfg.audio_pkt_repeat = HDMI_PACKETREPEATON;
343 }
344
345 hdmi_core_av_packet_config(core, repeat_cfg);
346 }
347
348 void hdmi4_core_dump(struct hdmi_core_data *core, struct seq_file *s)
349 {
350 int i;
351
352 #define CORE_REG(i, name) name(i)
353 #define DUMPCORE(r) seq_printf(s, "%-35s %08x\n", #r,\
354 hdmi_read_reg(core->base, r))
355 #define DUMPCOREAV(r) seq_printf(s, "%-35s %08x\n", #r,\
356 hdmi_read_reg(hdmi_av_base(core), r))
357 #define DUMPCOREAV2(i, r) seq_printf(s, "%s[%d]%*s %08x\n", #r, i, \
358 (i < 10) ? 32 - (int)strlen(#r) : 31 - (int)strlen(#r), " ", \
359 hdmi_read_reg(hdmi_av_base(core), CORE_REG(i, r)))
360
361 DUMPCORE(HDMI_CORE_SYS_VND_IDL);
362 DUMPCORE(HDMI_CORE_SYS_DEV_IDL);
363 DUMPCORE(HDMI_CORE_SYS_DEV_IDH);
364 DUMPCORE(HDMI_CORE_SYS_DEV_REV);
365 DUMPCORE(HDMI_CORE_SYS_SRST);
366 DUMPCORE(HDMI_CORE_SYS_SYS_CTRL1);
367 DUMPCORE(HDMI_CORE_SYS_SYS_STAT);
368 DUMPCORE(HDMI_CORE_SYS_SYS_CTRL3);
369 DUMPCORE(HDMI_CORE_SYS_DE_DLY);
370 DUMPCORE(HDMI_CORE_SYS_DE_CTRL);
371 DUMPCORE(HDMI_CORE_SYS_DE_TOP);
372 DUMPCORE(HDMI_CORE_SYS_DE_CNTL);
373 DUMPCORE(HDMI_CORE_SYS_DE_CNTH);
374 DUMPCORE(HDMI_CORE_SYS_DE_LINL);
375 DUMPCORE(HDMI_CORE_SYS_DE_LINH_1);
376 DUMPCORE(HDMI_CORE_SYS_HRES_L);
377 DUMPCORE(HDMI_CORE_SYS_HRES_H);
378 DUMPCORE(HDMI_CORE_SYS_VRES_L);
379 DUMPCORE(HDMI_CORE_SYS_VRES_H);
380 DUMPCORE(HDMI_CORE_SYS_IADJUST);
381 DUMPCORE(HDMI_CORE_SYS_POLDETECT);
382 DUMPCORE(HDMI_CORE_SYS_HWIDTH1);
383 DUMPCORE(HDMI_CORE_SYS_HWIDTH2);
384 DUMPCORE(HDMI_CORE_SYS_VWIDTH);
385 DUMPCORE(HDMI_CORE_SYS_VID_CTRL);
386 DUMPCORE(HDMI_CORE_SYS_VID_ACEN);
387 DUMPCORE(HDMI_CORE_SYS_VID_MODE);
388 DUMPCORE(HDMI_CORE_SYS_VID_BLANK1);
389 DUMPCORE(HDMI_CORE_SYS_VID_BLANK3);
390 DUMPCORE(HDMI_CORE_SYS_VID_BLANK1);
391 DUMPCORE(HDMI_CORE_SYS_DC_HEADER);
392 DUMPCORE(HDMI_CORE_SYS_VID_DITHER);
393 DUMPCORE(HDMI_CORE_SYS_RGB2XVYCC_CT);
394 DUMPCORE(HDMI_CORE_SYS_R2Y_COEFF_LOW);
395 DUMPCORE(HDMI_CORE_SYS_R2Y_COEFF_UP);
396 DUMPCORE(HDMI_CORE_SYS_G2Y_COEFF_LOW);
397 DUMPCORE(HDMI_CORE_SYS_G2Y_COEFF_UP);
398 DUMPCORE(HDMI_CORE_SYS_B2Y_COEFF_LOW);
399 DUMPCORE(HDMI_CORE_SYS_B2Y_COEFF_UP);
400 DUMPCORE(HDMI_CORE_SYS_R2CB_COEFF_LOW);
401 DUMPCORE(HDMI_CORE_SYS_R2CB_COEFF_UP);
402 DUMPCORE(HDMI_CORE_SYS_G2CB_COEFF_LOW);
403 DUMPCORE(HDMI_CORE_SYS_G2CB_COEFF_UP);
404 DUMPCORE(HDMI_CORE_SYS_B2CB_COEFF_LOW);
405 DUMPCORE(HDMI_CORE_SYS_B2CB_COEFF_UP);
406 DUMPCORE(HDMI_CORE_SYS_R2CR_COEFF_LOW);
407 DUMPCORE(HDMI_CORE_SYS_R2CR_COEFF_UP);
408 DUMPCORE(HDMI_CORE_SYS_G2CR_COEFF_LOW);
409 DUMPCORE(HDMI_CORE_SYS_G2CR_COEFF_UP);
410 DUMPCORE(HDMI_CORE_SYS_B2CR_COEFF_LOW);
411 DUMPCORE(HDMI_CORE_SYS_B2CR_COEFF_UP);
412 DUMPCORE(HDMI_CORE_SYS_RGB_OFFSET_LOW);
413 DUMPCORE(HDMI_CORE_SYS_RGB_OFFSET_UP);
414 DUMPCORE(HDMI_CORE_SYS_Y_OFFSET_LOW);
415 DUMPCORE(HDMI_CORE_SYS_Y_OFFSET_UP);
416 DUMPCORE(HDMI_CORE_SYS_CBCR_OFFSET_LOW);
417 DUMPCORE(HDMI_CORE_SYS_CBCR_OFFSET_UP);
418 DUMPCORE(HDMI_CORE_SYS_INTR_STATE);
419 DUMPCORE(HDMI_CORE_SYS_INTR1);
420 DUMPCORE(HDMI_CORE_SYS_INTR2);
421 DUMPCORE(HDMI_CORE_SYS_INTR3);
422 DUMPCORE(HDMI_CORE_SYS_INTR4);
423 DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK1);
424 DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK2);
425 DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK3);
426 DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK4);
427 DUMPCORE(HDMI_CORE_SYS_INTR_CTRL);
428 DUMPCORE(HDMI_CORE_SYS_TMDS_CTRL);
429
430 DUMPCORE(HDMI_CORE_DDC_ADDR);
431 DUMPCORE(HDMI_CORE_DDC_SEGM);
432 DUMPCORE(HDMI_CORE_DDC_OFFSET);
433 DUMPCORE(HDMI_CORE_DDC_COUNT1);
434 DUMPCORE(HDMI_CORE_DDC_COUNT2);
435 DUMPCORE(HDMI_CORE_DDC_STATUS);
436 DUMPCORE(HDMI_CORE_DDC_CMD);
437 DUMPCORE(HDMI_CORE_DDC_DATA);
438
439 DUMPCOREAV(HDMI_CORE_AV_ACR_CTRL);
440 DUMPCOREAV(HDMI_CORE_AV_FREQ_SVAL);
441 DUMPCOREAV(HDMI_CORE_AV_N_SVAL1);
442 DUMPCOREAV(HDMI_CORE_AV_N_SVAL2);
443 DUMPCOREAV(HDMI_CORE_AV_N_SVAL3);
444 DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL1);
445 DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL2);
446 DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL3);
447 DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL1);
448 DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL2);
449 DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL3);
450 DUMPCOREAV(HDMI_CORE_AV_AUD_MODE);
451 DUMPCOREAV(HDMI_CORE_AV_SPDIF_CTRL);
452 DUMPCOREAV(HDMI_CORE_AV_HW_SPDIF_FS);
453 DUMPCOREAV(HDMI_CORE_AV_SWAP_I2S);
454 DUMPCOREAV(HDMI_CORE_AV_SPDIF_ERTH);
455 DUMPCOREAV(HDMI_CORE_AV_I2S_IN_MAP);
456 DUMPCOREAV(HDMI_CORE_AV_I2S_IN_CTRL);
457 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST0);
458 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST1);
459 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST2);
460 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST4);
461 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST5);
462 DUMPCOREAV(HDMI_CORE_AV_ASRC);
463 DUMPCOREAV(HDMI_CORE_AV_I2S_IN_LEN);
464 DUMPCOREAV(HDMI_CORE_AV_HDMI_CTRL);
465 DUMPCOREAV(HDMI_CORE_AV_AUDO_TXSTAT);
466 DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_1);
467 DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_2);
468 DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_3);
469 DUMPCOREAV(HDMI_CORE_AV_TEST_TXCTRL);
470 DUMPCOREAV(HDMI_CORE_AV_DPD);
471 DUMPCOREAV(HDMI_CORE_AV_PB_CTRL1);
472 DUMPCOREAV(HDMI_CORE_AV_PB_CTRL2);
473 DUMPCOREAV(HDMI_CORE_AV_AVI_TYPE);
474 DUMPCOREAV(HDMI_CORE_AV_AVI_VERS);
475 DUMPCOREAV(HDMI_CORE_AV_AVI_LEN);
476 DUMPCOREAV(HDMI_CORE_AV_AVI_CHSUM);
477
478 for (i = 0; i < HDMI_CORE_AV_AVI_DBYTE_NELEMS; i++)
479 DUMPCOREAV2(i, HDMI_CORE_AV_AVI_DBYTE);
480
481 DUMPCOREAV(HDMI_CORE_AV_SPD_TYPE);
482 DUMPCOREAV(HDMI_CORE_AV_SPD_VERS);
483 DUMPCOREAV(HDMI_CORE_AV_SPD_LEN);
484 DUMPCOREAV(HDMI_CORE_AV_SPD_CHSUM);
485
486 for (i = 0; i < HDMI_CORE_AV_SPD_DBYTE_NELEMS; i++)
487 DUMPCOREAV2(i, HDMI_CORE_AV_SPD_DBYTE);
488
489 DUMPCOREAV(HDMI_CORE_AV_AUDIO_TYPE);
490 DUMPCOREAV(HDMI_CORE_AV_AUDIO_VERS);
491 DUMPCOREAV(HDMI_CORE_AV_AUDIO_LEN);
492 DUMPCOREAV(HDMI_CORE_AV_AUDIO_CHSUM);
493
494 for (i = 0; i < HDMI_CORE_AV_AUD_DBYTE_NELEMS; i++)
495 DUMPCOREAV2(i, HDMI_CORE_AV_AUD_DBYTE);
496
497 DUMPCOREAV(HDMI_CORE_AV_MPEG_TYPE);
498 DUMPCOREAV(HDMI_CORE_AV_MPEG_VERS);
499 DUMPCOREAV(HDMI_CORE_AV_MPEG_LEN);
500 DUMPCOREAV(HDMI_CORE_AV_MPEG_CHSUM);
501
502 for (i = 0; i < HDMI_CORE_AV_MPEG_DBYTE_NELEMS; i++)
503 DUMPCOREAV2(i, HDMI_CORE_AV_MPEG_DBYTE);
504
505 for (i = 0; i < HDMI_CORE_AV_GEN_DBYTE_NELEMS; i++)
506 DUMPCOREAV2(i, HDMI_CORE_AV_GEN_DBYTE);
507
508 DUMPCOREAV(HDMI_CORE_AV_CP_BYTE1);
509
510 for (i = 0; i < HDMI_CORE_AV_GEN2_DBYTE_NELEMS; i++)
511 DUMPCOREAV2(i, HDMI_CORE_AV_GEN2_DBYTE);
512
513 DUMPCOREAV(HDMI_CORE_AV_CEC_ADDR_ID);
514 }
515
516 static void hdmi_core_audio_config(struct hdmi_core_data *core,
517 struct hdmi_core_audio_config *cfg)
518 {
519 u32 r;
520 void __iomem *av_base = hdmi_av_base(core);
521
522 /*
523 * Parameters for generation of Audio Clock Recovery packets
524 */
525 REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL1, cfg->n, 7, 0);
526 REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL2, cfg->n >> 8, 7, 0);
527 REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL3, cfg->n >> 16, 7, 0);
528
529 if (cfg->cts_mode == HDMI_AUDIO_CTS_MODE_SW) {
530 REG_FLD_MOD(av_base, HDMI_CORE_AV_CTS_SVAL1, cfg->cts, 7, 0);
531 REG_FLD_MOD(av_base,
532 HDMI_CORE_AV_CTS_SVAL2, cfg->cts >> 8, 7, 0);
533 REG_FLD_MOD(av_base,
534 HDMI_CORE_AV_CTS_SVAL3, cfg->cts >> 16, 7, 0);
535 } else {
536 REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_1,
537 cfg->aud_par_busclk, 7, 0);
538 REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_2,
539 (cfg->aud_par_busclk >> 8), 7, 0);
540 REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_3,
541 (cfg->aud_par_busclk >> 16), 7, 0);
542 }
543
544 /* Set ACR clock divisor */
545 if (cfg->use_mclk)
546 REG_FLD_MOD(av_base, HDMI_CORE_AV_FREQ_SVAL,
547 cfg->mclk_mode, 2, 0);
548
549 r = hdmi_read_reg(av_base, HDMI_CORE_AV_ACR_CTRL);
550 /*
551 * Use TMDS clock for ACR packets. For devices that use
552 * the MCLK, this is the first part of the MCLK initialization.
553 */
554 r = FLD_MOD(r, 0, 2, 2);
555
556 r = FLD_MOD(r, cfg->en_acr_pkt, 1, 1);
557 r = FLD_MOD(r, cfg->cts_mode, 0, 0);
558 hdmi_write_reg(av_base, HDMI_CORE_AV_ACR_CTRL, r);
559
560 /* For devices using MCLK, this completes its initialization. */
561 if (cfg->use_mclk)
562 REG_FLD_MOD(av_base, HDMI_CORE_AV_ACR_CTRL, 1, 2, 2);
563
564 /* Override of SPDIF sample frequency with value in I2S_CHST4 */
565 REG_FLD_MOD(av_base, HDMI_CORE_AV_SPDIF_CTRL,
566 cfg->fs_override, 1, 1);
567
568 /*
569 * Set IEC-60958-3 channel status word. It is passed to the IP
570 * just as it is received. The user of the driver is responsible
571 * for its contents.
572 */
573 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST0,
574 cfg->iec60958_cfg->status[0]);
575 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST1,
576 cfg->iec60958_cfg->status[1]);
577 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST2,
578 cfg->iec60958_cfg->status[2]);
579 /* yes, this is correct: status[3] goes to CHST4 register */
580 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST4,
581 cfg->iec60958_cfg->status[3]);
582 /* yes, this is correct: status[4] goes to CHST5 register */
583 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST5,
584 cfg->iec60958_cfg->status[4]);
585
586 /* set I2S parameters */
587 r = hdmi_read_reg(av_base, HDMI_CORE_AV_I2S_IN_CTRL);
588 r = FLD_MOD(r, cfg->i2s_cfg.sck_edge_mode, 6, 6);
589 r = FLD_MOD(r, cfg->i2s_cfg.vbit, 4, 4);
590 r = FLD_MOD(r, cfg->i2s_cfg.justification, 2, 2);
591 r = FLD_MOD(r, cfg->i2s_cfg.direction, 1, 1);
592 r = FLD_MOD(r, cfg->i2s_cfg.shift, 0, 0);
593 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_IN_CTRL, r);
594
595 REG_FLD_MOD(av_base, HDMI_CORE_AV_I2S_IN_LEN,
596 cfg->i2s_cfg.in_length_bits, 3, 0);
597
598 /* Audio channels and mode parameters */
599 REG_FLD_MOD(av_base, HDMI_CORE_AV_HDMI_CTRL, cfg->layout, 2, 1);
600 r = hdmi_read_reg(av_base, HDMI_CORE_AV_AUD_MODE);
601 r = FLD_MOD(r, cfg->i2s_cfg.active_sds, 7, 4);
602 r = FLD_MOD(r, cfg->en_dsd_audio, 3, 3);
603 r = FLD_MOD(r, cfg->en_parallel_aud_input, 2, 2);
604 r = FLD_MOD(r, cfg->en_spdif, 1, 1);
605 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_MODE, r);
606
607 /* Audio channel mappings */
608 /* TODO: Make channel mapping dynamic. For now, map channels
609 * in the ALSA order: FL/FR/RL/RR/C/LFE/SL/SR. Remapping is needed as
610 * HDMI speaker order is different. See CEA-861 Section 6.6.2.
611 */
612 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_IN_MAP, 0x78);
613 REG_FLD_MOD(av_base, HDMI_CORE_AV_SWAP_I2S, 1, 5, 5);
614 }
615
616 static void hdmi_core_audio_infoframe_cfg(struct hdmi_core_data *core,
617 struct snd_cea_861_aud_if *info_aud)
618 {
619 u8 sum = 0, checksum = 0;
620 void __iomem *av_base = hdmi_av_base(core);
621
622 /*
623 * Set audio info frame type, version and length as
624 * described in HDMI 1.4a Section 8.2.2 specification.
625 * Checksum calculation is defined in Section 5.3.5.
626 */
627 hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_TYPE, 0x84);
628 hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_VERS, 0x01);
629 hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_LEN, 0x0a);
630 sum += 0x84 + 0x001 + 0x00a;
631
632 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(0),
633 info_aud->db1_ct_cc);
634 sum += info_aud->db1_ct_cc;
635
636 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(1),
637 info_aud->db2_sf_ss);
638 sum += info_aud->db2_sf_ss;
639
640 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(2), info_aud->db3);
641 sum += info_aud->db3;
642
643 /*
644 * The OMAP HDMI IP requires to use the 8-channel channel code when
645 * transmitting more than two channels.
646 */
647 if (info_aud->db4_ca != 0x00)
648 info_aud->db4_ca = 0x13;
649
650 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(3), info_aud->db4_ca);
651 sum += info_aud->db4_ca;
652
653 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(4),
654 info_aud->db5_dminh_lsv);
655 sum += info_aud->db5_dminh_lsv;
656
657 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(5), 0x00);
658 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(6), 0x00);
659 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(7), 0x00);
660 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(8), 0x00);
661 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(9), 0x00);
662
663 checksum = 0x100 - sum;
664 hdmi_write_reg(av_base,
665 HDMI_CORE_AV_AUDIO_CHSUM, checksum);
666
667 /*
668 * TODO: Add MPEG and SPD enable and repeat cfg when EDID parsing
669 * is available.
670 */
671 }
672
673 int hdmi4_audio_config(struct hdmi_core_data *core, struct hdmi_wp_data *wp,
674 struct omap_dss_audio *audio, u32 pclk)
675 {
676 struct hdmi_audio_format audio_format;
677 struct hdmi_audio_dma audio_dma;
678 struct hdmi_core_audio_config acore;
679 int n, cts, channel_count;
680 unsigned int fs_nr;
681 bool word_length_16b = false;
682
683 if (!audio || !audio->iec || !audio->cea || !core)
684 return -EINVAL;
685
686 acore.iec60958_cfg = audio->iec;
687 /*
688 * In the IEC-60958 status word, check if the audio sample word length
689 * is 16-bit as several optimizations can be performed in such case.
690 */
691 if (!(audio->iec->status[4] & IEC958_AES4_CON_MAX_WORDLEN_24))
692 if (audio->iec->status[4] & IEC958_AES4_CON_WORDLEN_20_16)
693 word_length_16b = true;
694
695 /* I2S configuration. See Phillips' specification */
696 if (word_length_16b)
697 acore.i2s_cfg.justification = HDMI_AUDIO_JUSTIFY_LEFT;
698 else
699 acore.i2s_cfg.justification = HDMI_AUDIO_JUSTIFY_RIGHT;
700 /*
701 * The I2S input word length is twice the length given in the IEC-60958
702 * status word. If the word size is greater than
703 * 20 bits, increment by one.
704 */
705 acore.i2s_cfg.in_length_bits = audio->iec->status[4]
706 & IEC958_AES4_CON_WORDLEN;
707 if (audio->iec->status[4] & IEC958_AES4_CON_MAX_WORDLEN_24)
708 acore.i2s_cfg.in_length_bits++;
709 acore.i2s_cfg.sck_edge_mode = HDMI_AUDIO_I2S_SCK_EDGE_RISING;
710 acore.i2s_cfg.vbit = HDMI_AUDIO_I2S_VBIT_FOR_PCM;
711 acore.i2s_cfg.direction = HDMI_AUDIO_I2S_MSB_SHIFTED_FIRST;
712 acore.i2s_cfg.shift = HDMI_AUDIO_I2S_FIRST_BIT_SHIFT;
713
714 /* convert sample frequency to a number */
715 switch (audio->iec->status[3] & IEC958_AES3_CON_FS) {
716 case IEC958_AES3_CON_FS_32000:
717 fs_nr = 32000;
718 break;
719 case IEC958_AES3_CON_FS_44100:
720 fs_nr = 44100;
721 break;
722 case IEC958_AES3_CON_FS_48000:
723 fs_nr = 48000;
724 break;
725 case IEC958_AES3_CON_FS_88200:
726 fs_nr = 88200;
727 break;
728 case IEC958_AES3_CON_FS_96000:
729 fs_nr = 96000;
730 break;
731 case IEC958_AES3_CON_FS_176400:
732 fs_nr = 176400;
733 break;
734 case IEC958_AES3_CON_FS_192000:
735 fs_nr = 192000;
736 break;
737 default:
738 return -EINVAL;
739 }
740
741 hdmi_compute_acr(pclk, fs_nr, &n, &cts);
742
743 /* Audio clock regeneration settings */
744 acore.n = n;
745 acore.cts = cts;
746 if (core->cts_swmode) {
747 acore.aud_par_busclk = 0;
748 acore.cts_mode = HDMI_AUDIO_CTS_MODE_SW;
749 acore.use_mclk = core->audio_use_mclk;
750 } else {
751 acore.aud_par_busclk = (((128 * 31) - 1) << 8);
752 acore.cts_mode = HDMI_AUDIO_CTS_MODE_HW;
753 acore.use_mclk = true;
754 }
755
756 if (acore.use_mclk)
757 acore.mclk_mode = HDMI_AUDIO_MCLK_128FS;
758
759 /* Audio channels settings */
760 channel_count = (audio->cea->db1_ct_cc &
761 CEA861_AUDIO_INFOFRAME_DB1CC) + 1;
762
763 switch (channel_count) {
764 case 2:
765 audio_format.active_chnnls_msk = 0x03;
766 break;
767 case 3:
768 audio_format.active_chnnls_msk = 0x07;
769 break;
770 case 4:
771 audio_format.active_chnnls_msk = 0x0f;
772 break;
773 case 5:
774 audio_format.active_chnnls_msk = 0x1f;
775 break;
776 case 6:
777 audio_format.active_chnnls_msk = 0x3f;
778 break;
779 case 7:
780 audio_format.active_chnnls_msk = 0x7f;
781 break;
782 case 8:
783 audio_format.active_chnnls_msk = 0xff;
784 break;
785 default:
786 return -EINVAL;
787 }
788
789 /*
790 * the HDMI IP needs to enable four stereo channels when transmitting
791 * more than 2 audio channels. Similarly, the channel count in the
792 * Audio InfoFrame has to match the sample_present bits (some channels
793 * are padded with zeroes)
794 */
795 if (channel_count == 2) {
796 audio_format.stereo_channels = HDMI_AUDIO_STEREO_ONECHANNEL;
797 acore.i2s_cfg.active_sds = HDMI_AUDIO_I2S_SD0_EN;
798 acore.layout = HDMI_AUDIO_LAYOUT_2CH;
799 } else {
800 audio_format.stereo_channels = HDMI_AUDIO_STEREO_FOURCHANNELS;
801 acore.i2s_cfg.active_sds = HDMI_AUDIO_I2S_SD0_EN |
802 HDMI_AUDIO_I2S_SD1_EN | HDMI_AUDIO_I2S_SD2_EN |
803 HDMI_AUDIO_I2S_SD3_EN;
804 acore.layout = HDMI_AUDIO_LAYOUT_8CH;
805 audio->cea->db1_ct_cc = 7;
806 }
807
808 acore.en_spdif = false;
809 /* use sample frequency from channel status word */
810 acore.fs_override = true;
811 /* enable ACR packets */
812 acore.en_acr_pkt = true;
813 /* disable direct streaming digital audio */
814 acore.en_dsd_audio = false;
815 /* use parallel audio interface */
816 acore.en_parallel_aud_input = true;
817
818 /* DMA settings */
819 if (word_length_16b)
820 audio_dma.transfer_size = 0x10;
821 else
822 audio_dma.transfer_size = 0x20;
823 audio_dma.block_size = 0xC0;
824 audio_dma.mode = HDMI_AUDIO_TRANSF_DMA;
825 audio_dma.fifo_threshold = 0x20; /* in number of samples */
826
827 /* audio FIFO format settings */
828 if (word_length_16b) {
829 audio_format.samples_per_word = HDMI_AUDIO_ONEWORD_TWOSAMPLES;
830 audio_format.sample_size = HDMI_AUDIO_SAMPLE_16BITS;
831 audio_format.justification = HDMI_AUDIO_JUSTIFY_LEFT;
832 } else {
833 audio_format.samples_per_word = HDMI_AUDIO_ONEWORD_ONESAMPLE;
834 audio_format.sample_size = HDMI_AUDIO_SAMPLE_24BITS;
835 audio_format.justification = HDMI_AUDIO_JUSTIFY_RIGHT;
836 }
837 audio_format.type = HDMI_AUDIO_TYPE_LPCM;
838 audio_format.sample_order = HDMI_AUDIO_SAMPLE_LEFT_FIRST;
839 /* disable start/stop signals of IEC 60958 blocks */
840 audio_format.en_sig_blk_strt_end = HDMI_AUDIO_BLOCK_SIG_STARTEND_ON;
841
842 /* configure DMA and audio FIFO format*/
843 hdmi_wp_audio_config_dma(wp, &audio_dma);
844 hdmi_wp_audio_config_format(wp, &audio_format);
845
846 /* configure the core*/
847 hdmi_core_audio_config(core, &acore);
848
849 /* configure CEA 861 audio infoframe*/
850 hdmi_core_audio_infoframe_cfg(core, audio->cea);
851
852 return 0;
853 }
854
855 int hdmi4_audio_start(struct hdmi_core_data *core, struct hdmi_wp_data *wp)
856 {
857 REG_FLD_MOD(hdmi_av_base(core),
858 HDMI_CORE_AV_AUD_MODE, true, 0, 0);
859
860 hdmi_wp_audio_core_req_enable(wp, true);
861
862 return 0;
863 }
864
865 void hdmi4_audio_stop(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, false, 0, 0);
869
870 hdmi_wp_audio_core_req_enable(wp, false);
871 }
872
873 struct hdmi4_features {
874 bool cts_swmode;
875 bool audio_use_mclk;
876 };
877
878 static const struct hdmi4_features hdmi4430_es1_features = {
879 .cts_swmode = false,
880 .audio_use_mclk = false,
881 };
882
883 static const struct hdmi4_features hdmi4430_es2_features = {
884 .cts_swmode = true,
885 .audio_use_mclk = false,
886 };
887
888 static const struct hdmi4_features hdmi4_features = {
889 .cts_swmode = true,
890 .audio_use_mclk = true,
891 };
892
893 static const struct soc_device_attribute hdmi4_soc_devices[] = {
894 {
895 .machine = "OMAP4430",
896 .revision = "ES1.?",
897 .data = &hdmi4430_es1_features,
898 },
899 {
900 .machine = "OMAP4430",
901 .revision = "ES2.?",
902 .data = &hdmi4430_es2_features,
903 },
904 {
905 .family = "OMAP4",
906 .data = &hdmi4_features,
907 },
908 { /* sentinel */ }
909 };
910
911 int hdmi4_core_init(struct platform_device *pdev, struct hdmi_core_data *core)
912 {
913 const struct hdmi4_features *features;
914 struct resource *res;
915 const struct soc_device_attribute *soc;
916
917 soc = soc_device_match(hdmi4_soc_devices);
918 if (!soc)
919 return -ENODEV;
920
921 features = soc->data;
922 core->cts_swmode = features->cts_swmode;
923 core->audio_use_mclk = features->audio_use_mclk;
924
925 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core");
926 core->base = devm_ioremap_resource(&pdev->dev, res);
927 if (IS_ERR(core->base))
928 return PTR_ERR(core->base);
929
930 return 0;
931 }
Linux with added FPC-III support