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 - https://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
hdmi_av_base(struct hdmi_core_data * core)30 static inline void __iomem *hdmi_av_base(struct hdmi_core_data *core)
31 {
32 return core->base + HDMI_CORE_AV;
33 }
34
hdmi4_core_ddc_init(struct hdmi_core_data * core)35 int hdmi4_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
hdmi4_core_ddc_read(void * data,u8 * buf,unsigned int block,size_t len)77 int hdmi4_core_ddc_read(void *data, u8 *buf, unsigned int block, size_t len)
78 {
79 struct hdmi_core_data *core = data;
80 void __iomem *base = core->base;
81 u32 i;
82
83 /* HDMI_CORE_DDC_STATUS_IN_PROG */
84 if (hdmi_wait_for_bit_change(base, HDMI_CORE_DDC_STATUS,
85 4, 4, 0) != 0) {
86 DSSERR("Timeout waiting DDC to be ready\n");
87 return -ETIMEDOUT;
88 }
89
90 /* Load Segment Address Register */
91 REG_FLD_MOD(base, HDMI_CORE_DDC_SEGM, block / 2, 7, 0);
92
93 /* Load Slave Address Register */
94 REG_FLD_MOD(base, HDMI_CORE_DDC_ADDR, 0xA0 >> 1, 7, 1);
95
96 /* Load Offset Address Register */
97 REG_FLD_MOD(base, HDMI_CORE_DDC_OFFSET, block % 2 ? 0x80 : 0, 7, 0);
98
99 /* Load Byte Count */
100 REG_FLD_MOD(base, HDMI_CORE_DDC_COUNT1, len, 7, 0);
101 REG_FLD_MOD(base, HDMI_CORE_DDC_COUNT2, 0x0, 1, 0);
102
103 /* Set DDC_CMD */
104 if (block)
105 REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x4, 3, 0);
106 else
107 REG_FLD_MOD(base, HDMI_CORE_DDC_CMD, 0x2, 3, 0);
108
109 /* HDMI_CORE_DDC_STATUS_BUS_LOW */
110 if (REG_GET(base, HDMI_CORE_DDC_STATUS, 6, 6) == 1) {
111 DSSERR("I2C Bus Low?\n");
112 return -EIO;
113 }
114 /* HDMI_CORE_DDC_STATUS_NO_ACK */
115 if (REG_GET(base, HDMI_CORE_DDC_STATUS, 5, 5) == 1) {
116 DSSERR("I2C No Ack\n");
117 return -EIO;
118 }
119
120 for (i = 0; i < len; ++i) {
121 int t;
122
123 /* IN_PROG */
124 if (REG_GET(base, HDMI_CORE_DDC_STATUS, 4, 4) == 0) {
125 DSSERR("operation stopped when reading edid\n");
126 return -EIO;
127 }
128
129 t = 0;
130 /* FIFO_EMPTY */
131 while (REG_GET(base, HDMI_CORE_DDC_STATUS, 2, 2) == 1) {
132 if (t++ > 10000) {
133 DSSERR("timeout reading edid\n");
134 return -ETIMEDOUT;
135 }
136 udelay(1);
137 }
138
139 buf[i] = REG_GET(base, HDMI_CORE_DDC_DATA, 7, 0);
140 }
141
142 return 0;
143 }
144
hdmi_core_init(struct hdmi_core_video_config * video_cfg)145 static void hdmi_core_init(struct hdmi_core_video_config *video_cfg)
146 {
147 DSSDBG("Enter hdmi_core_init\n");
148
149 /* video core */
150 video_cfg->ip_bus_width = HDMI_INPUT_8BIT;
151 video_cfg->op_dither_truc = HDMI_OUTPUTTRUNCATION_8BIT;
152 video_cfg->deep_color_pkt = HDMI_DEEPCOLORPACKECTDISABLE;
153 video_cfg->pkt_mode = HDMI_PACKETMODERESERVEDVALUE;
154 video_cfg->hdmi_dvi = HDMI_DVI;
155 video_cfg->tclk_sel_clkmult = HDMI_FPLL10IDCK;
156 }
157
hdmi4_core_powerdown_disable(struct hdmi_core_data * core)158 void hdmi4_core_powerdown_disable(struct hdmi_core_data *core)
159 {
160 DSSDBG("Enter hdmi4_core_powerdown_disable\n");
161 REG_FLD_MOD(core->base, HDMI_CORE_SYS_SYS_CTRL1, 0x1, 0, 0);
162 }
163
hdmi_core_swreset_release(struct hdmi_core_data * core)164 static void hdmi_core_swreset_release(struct hdmi_core_data *core)
165 {
166 DSSDBG("Enter hdmi_core_swreset_release\n");
167 REG_FLD_MOD(core->base, HDMI_CORE_SYS_SRST, 0x0, 0, 0);
168 }
169
hdmi_core_swreset_assert(struct hdmi_core_data * core)170 static void hdmi_core_swreset_assert(struct hdmi_core_data *core)
171 {
172 DSSDBG("Enter hdmi_core_swreset_assert\n");
173 REG_FLD_MOD(core->base, HDMI_CORE_SYS_SRST, 0x1, 0, 0);
174 }
175
176 /* HDMI_CORE_VIDEO_CONFIG */
hdmi_core_video_config(struct hdmi_core_data * core,struct hdmi_core_video_config * cfg)177 static void hdmi_core_video_config(struct hdmi_core_data *core,
178 struct hdmi_core_video_config *cfg)
179 {
180 u32 r = 0;
181 void __iomem *core_sys_base = core->base;
182 void __iomem *core_av_base = hdmi_av_base(core);
183
184 /* sys_ctrl1 default configuration not tunable */
185 r = hdmi_read_reg(core_sys_base, HDMI_CORE_SYS_SYS_CTRL1);
186 r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_VEN_FOLLOWVSYNC, 5, 5);
187 r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_HEN_FOLLOWHSYNC, 4, 4);
188 r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_BSEL_24BITBUS, 2, 2);
189 r = FLD_MOD(r, HDMI_CORE_SYS_SYS_CTRL1_EDGE_RISINGEDGE, 1, 1);
190 hdmi_write_reg(core_sys_base, HDMI_CORE_SYS_SYS_CTRL1, r);
191
192 REG_FLD_MOD(core_sys_base,
193 HDMI_CORE_SYS_VID_ACEN, cfg->ip_bus_width, 7, 6);
194
195 /* Vid_Mode */
196 r = hdmi_read_reg(core_sys_base, HDMI_CORE_SYS_VID_MODE);
197
198 /* dither truncation configuration */
199 if (cfg->op_dither_truc > HDMI_OUTPUTTRUNCATION_12BIT) {
200 r = FLD_MOD(r, cfg->op_dither_truc - 3, 7, 6);
201 r = FLD_MOD(r, 1, 5, 5);
202 } else {
203 r = FLD_MOD(r, cfg->op_dither_truc, 7, 6);
204 r = FLD_MOD(r, 0, 5, 5);
205 }
206 hdmi_write_reg(core_sys_base, HDMI_CORE_SYS_VID_MODE, r);
207
208 /* HDMI_Ctrl */
209 r = hdmi_read_reg(core_av_base, HDMI_CORE_AV_HDMI_CTRL);
210 r = FLD_MOD(r, cfg->deep_color_pkt, 6, 6);
211 r = FLD_MOD(r, cfg->pkt_mode, 5, 3);
212 r = FLD_MOD(r, cfg->hdmi_dvi, 0, 0);
213 hdmi_write_reg(core_av_base, HDMI_CORE_AV_HDMI_CTRL, r);
214
215 /* TMDS_CTRL */
216 REG_FLD_MOD(core_sys_base,
217 HDMI_CORE_SYS_TMDS_CTRL, cfg->tclk_sel_clkmult, 6, 5);
218 }
219
hdmi_core_write_avi_infoframe(struct hdmi_core_data * core,struct hdmi_avi_infoframe * frame)220 static void hdmi_core_write_avi_infoframe(struct hdmi_core_data *core,
221 struct hdmi_avi_infoframe *frame)
222 {
223 void __iomem *av_base = hdmi_av_base(core);
224 u8 data[HDMI_INFOFRAME_SIZE(AVI)];
225 int i;
226
227 hdmi_avi_infoframe_pack(frame, data, sizeof(data));
228
229 print_hex_dump_debug("AVI: ", DUMP_PREFIX_NONE, 16, 1, data,
230 HDMI_INFOFRAME_SIZE(AVI), false);
231
232 for (i = 0; i < sizeof(data); ++i) {
233 hdmi_write_reg(av_base, HDMI_CORE_AV_AVI_BASE + i * 4,
234 data[i]);
235 }
236 }
237
hdmi_core_av_packet_config(struct hdmi_core_data * core,struct hdmi_core_packet_enable_repeat repeat_cfg)238 static void hdmi_core_av_packet_config(struct hdmi_core_data *core,
239 struct hdmi_core_packet_enable_repeat repeat_cfg)
240 {
241 /* enable/repeat the infoframe */
242 hdmi_write_reg(hdmi_av_base(core), HDMI_CORE_AV_PB_CTRL1,
243 (repeat_cfg.audio_pkt << 5) |
244 (repeat_cfg.audio_pkt_repeat << 4) |
245 (repeat_cfg.avi_infoframe << 1) |
246 (repeat_cfg.avi_infoframe_repeat));
247
248 /* enable/repeat the packet */
249 hdmi_write_reg(hdmi_av_base(core), HDMI_CORE_AV_PB_CTRL2,
250 (repeat_cfg.gen_cntrl_pkt << 3) |
251 (repeat_cfg.gen_cntrl_pkt_repeat << 2) |
252 (repeat_cfg.generic_pkt << 1) |
253 (repeat_cfg.generic_pkt_repeat));
254 }
255
hdmi4_configure(struct hdmi_core_data * core,struct hdmi_wp_data * wp,struct hdmi_config * cfg)256 void hdmi4_configure(struct hdmi_core_data *core,
257 struct hdmi_wp_data *wp, struct hdmi_config *cfg)
258 {
259 /* HDMI */
260 struct videomode vm;
261 struct hdmi_video_format video_format;
262 /* HDMI core */
263 struct hdmi_core_video_config v_core_cfg;
264 struct hdmi_core_packet_enable_repeat repeat_cfg = { 0 };
265
266 hdmi_core_init(&v_core_cfg);
267
268 hdmi_wp_init_vid_fmt_timings(&video_format, &vm, cfg);
269
270 hdmi_wp_video_config_timing(wp, &vm);
271
272 /* video config */
273 video_format.packing_mode = HDMI_PACK_24b_RGB_YUV444_YUV422;
274
275 hdmi_wp_video_config_format(wp, &video_format);
276
277 hdmi_wp_video_config_interface(wp, &vm);
278
279 /*
280 * configure core video part
281 * set software reset in the core
282 */
283 hdmi_core_swreset_assert(core);
284
285 v_core_cfg.pkt_mode = HDMI_PACKETMODE24BITPERPIXEL;
286 v_core_cfg.hdmi_dvi = cfg->hdmi_dvi_mode;
287
288 hdmi_core_video_config(core, &v_core_cfg);
289
290 /* release software reset in the core */
291 hdmi_core_swreset_release(core);
292
293 if (cfg->hdmi_dvi_mode == HDMI_HDMI) {
294 hdmi_core_write_avi_infoframe(core, &cfg->infoframe);
295
296 /* enable/repeat the infoframe */
297 repeat_cfg.avi_infoframe = HDMI_PACKETENABLE;
298 repeat_cfg.avi_infoframe_repeat = HDMI_PACKETREPEATON;
299 /* wakeup */
300 repeat_cfg.audio_pkt = HDMI_PACKETENABLE;
301 repeat_cfg.audio_pkt_repeat = HDMI_PACKETREPEATON;
302 }
303
304 hdmi_core_av_packet_config(core, repeat_cfg);
305 }
306
hdmi4_core_dump(struct hdmi_core_data * core,struct seq_file * s)307 void hdmi4_core_dump(struct hdmi_core_data *core, struct seq_file *s)
308 {
309 int i;
310
311 #define CORE_REG(i, name) name(i)
312 #define DUMPCORE(r) seq_printf(s, "%-35s %08x\n", #r,\
313 hdmi_read_reg(core->base, r))
314 #define DUMPCOREAV(r) seq_printf(s, "%-35s %08x\n", #r,\
315 hdmi_read_reg(hdmi_av_base(core), r))
316 #define DUMPCOREAV2(i, r) seq_printf(s, "%s[%d]%*s %08x\n", #r, i, \
317 (i < 10) ? 32 - (int)strlen(#r) : 31 - (int)strlen(#r), " ", \
318 hdmi_read_reg(hdmi_av_base(core), CORE_REG(i, r)))
319
320 DUMPCORE(HDMI_CORE_SYS_VND_IDL);
321 DUMPCORE(HDMI_CORE_SYS_DEV_IDL);
322 DUMPCORE(HDMI_CORE_SYS_DEV_IDH);
323 DUMPCORE(HDMI_CORE_SYS_DEV_REV);
324 DUMPCORE(HDMI_CORE_SYS_SRST);
325 DUMPCORE(HDMI_CORE_SYS_SYS_CTRL1);
326 DUMPCORE(HDMI_CORE_SYS_SYS_STAT);
327 DUMPCORE(HDMI_CORE_SYS_SYS_CTRL3);
328 DUMPCORE(HDMI_CORE_SYS_DE_DLY);
329 DUMPCORE(HDMI_CORE_SYS_DE_CTRL);
330 DUMPCORE(HDMI_CORE_SYS_DE_TOP);
331 DUMPCORE(HDMI_CORE_SYS_DE_CNTL);
332 DUMPCORE(HDMI_CORE_SYS_DE_CNTH);
333 DUMPCORE(HDMI_CORE_SYS_DE_LINL);
334 DUMPCORE(HDMI_CORE_SYS_DE_LINH_1);
335 DUMPCORE(HDMI_CORE_SYS_HRES_L);
336 DUMPCORE(HDMI_CORE_SYS_HRES_H);
337 DUMPCORE(HDMI_CORE_SYS_VRES_L);
338 DUMPCORE(HDMI_CORE_SYS_VRES_H);
339 DUMPCORE(HDMI_CORE_SYS_IADJUST);
340 DUMPCORE(HDMI_CORE_SYS_POLDETECT);
341 DUMPCORE(HDMI_CORE_SYS_HWIDTH1);
342 DUMPCORE(HDMI_CORE_SYS_HWIDTH2);
343 DUMPCORE(HDMI_CORE_SYS_VWIDTH);
344 DUMPCORE(HDMI_CORE_SYS_VID_CTRL);
345 DUMPCORE(HDMI_CORE_SYS_VID_ACEN);
346 DUMPCORE(HDMI_CORE_SYS_VID_MODE);
347 DUMPCORE(HDMI_CORE_SYS_VID_BLANK1);
348 DUMPCORE(HDMI_CORE_SYS_VID_BLANK3);
349 DUMPCORE(HDMI_CORE_SYS_VID_BLANK1);
350 DUMPCORE(HDMI_CORE_SYS_DC_HEADER);
351 DUMPCORE(HDMI_CORE_SYS_VID_DITHER);
352 DUMPCORE(HDMI_CORE_SYS_RGB2XVYCC_CT);
353 DUMPCORE(HDMI_CORE_SYS_R2Y_COEFF_LOW);
354 DUMPCORE(HDMI_CORE_SYS_R2Y_COEFF_UP);
355 DUMPCORE(HDMI_CORE_SYS_G2Y_COEFF_LOW);
356 DUMPCORE(HDMI_CORE_SYS_G2Y_COEFF_UP);
357 DUMPCORE(HDMI_CORE_SYS_B2Y_COEFF_LOW);
358 DUMPCORE(HDMI_CORE_SYS_B2Y_COEFF_UP);
359 DUMPCORE(HDMI_CORE_SYS_R2CB_COEFF_LOW);
360 DUMPCORE(HDMI_CORE_SYS_R2CB_COEFF_UP);
361 DUMPCORE(HDMI_CORE_SYS_G2CB_COEFF_LOW);
362 DUMPCORE(HDMI_CORE_SYS_G2CB_COEFF_UP);
363 DUMPCORE(HDMI_CORE_SYS_B2CB_COEFF_LOW);
364 DUMPCORE(HDMI_CORE_SYS_B2CB_COEFF_UP);
365 DUMPCORE(HDMI_CORE_SYS_R2CR_COEFF_LOW);
366 DUMPCORE(HDMI_CORE_SYS_R2CR_COEFF_UP);
367 DUMPCORE(HDMI_CORE_SYS_G2CR_COEFF_LOW);
368 DUMPCORE(HDMI_CORE_SYS_G2CR_COEFF_UP);
369 DUMPCORE(HDMI_CORE_SYS_B2CR_COEFF_LOW);
370 DUMPCORE(HDMI_CORE_SYS_B2CR_COEFF_UP);
371 DUMPCORE(HDMI_CORE_SYS_RGB_OFFSET_LOW);
372 DUMPCORE(HDMI_CORE_SYS_RGB_OFFSET_UP);
373 DUMPCORE(HDMI_CORE_SYS_Y_OFFSET_LOW);
374 DUMPCORE(HDMI_CORE_SYS_Y_OFFSET_UP);
375 DUMPCORE(HDMI_CORE_SYS_CBCR_OFFSET_LOW);
376 DUMPCORE(HDMI_CORE_SYS_CBCR_OFFSET_UP);
377 DUMPCORE(HDMI_CORE_SYS_INTR_STATE);
378 DUMPCORE(HDMI_CORE_SYS_INTR1);
379 DUMPCORE(HDMI_CORE_SYS_INTR2);
380 DUMPCORE(HDMI_CORE_SYS_INTR3);
381 DUMPCORE(HDMI_CORE_SYS_INTR4);
382 DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK1);
383 DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK2);
384 DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK3);
385 DUMPCORE(HDMI_CORE_SYS_INTR_UNMASK4);
386 DUMPCORE(HDMI_CORE_SYS_INTR_CTRL);
387 DUMPCORE(HDMI_CORE_SYS_TMDS_CTRL);
388
389 DUMPCORE(HDMI_CORE_DDC_ADDR);
390 DUMPCORE(HDMI_CORE_DDC_SEGM);
391 DUMPCORE(HDMI_CORE_DDC_OFFSET);
392 DUMPCORE(HDMI_CORE_DDC_COUNT1);
393 DUMPCORE(HDMI_CORE_DDC_COUNT2);
394 DUMPCORE(HDMI_CORE_DDC_STATUS);
395 DUMPCORE(HDMI_CORE_DDC_CMD);
396 DUMPCORE(HDMI_CORE_DDC_DATA);
397
398 DUMPCOREAV(HDMI_CORE_AV_ACR_CTRL);
399 DUMPCOREAV(HDMI_CORE_AV_FREQ_SVAL);
400 DUMPCOREAV(HDMI_CORE_AV_N_SVAL1);
401 DUMPCOREAV(HDMI_CORE_AV_N_SVAL2);
402 DUMPCOREAV(HDMI_CORE_AV_N_SVAL3);
403 DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL1);
404 DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL2);
405 DUMPCOREAV(HDMI_CORE_AV_CTS_SVAL3);
406 DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL1);
407 DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL2);
408 DUMPCOREAV(HDMI_CORE_AV_CTS_HVAL3);
409 DUMPCOREAV(HDMI_CORE_AV_AUD_MODE);
410 DUMPCOREAV(HDMI_CORE_AV_SPDIF_CTRL);
411 DUMPCOREAV(HDMI_CORE_AV_HW_SPDIF_FS);
412 DUMPCOREAV(HDMI_CORE_AV_SWAP_I2S);
413 DUMPCOREAV(HDMI_CORE_AV_SPDIF_ERTH);
414 DUMPCOREAV(HDMI_CORE_AV_I2S_IN_MAP);
415 DUMPCOREAV(HDMI_CORE_AV_I2S_IN_CTRL);
416 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST0);
417 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST1);
418 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST2);
419 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST4);
420 DUMPCOREAV(HDMI_CORE_AV_I2S_CHST5);
421 DUMPCOREAV(HDMI_CORE_AV_ASRC);
422 DUMPCOREAV(HDMI_CORE_AV_I2S_IN_LEN);
423 DUMPCOREAV(HDMI_CORE_AV_HDMI_CTRL);
424 DUMPCOREAV(HDMI_CORE_AV_AUDO_TXSTAT);
425 DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_1);
426 DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_2);
427 DUMPCOREAV(HDMI_CORE_AV_AUD_PAR_BUSCLK_3);
428 DUMPCOREAV(HDMI_CORE_AV_TEST_TXCTRL);
429 DUMPCOREAV(HDMI_CORE_AV_DPD);
430 DUMPCOREAV(HDMI_CORE_AV_PB_CTRL1);
431 DUMPCOREAV(HDMI_CORE_AV_PB_CTRL2);
432 DUMPCOREAV(HDMI_CORE_AV_AVI_TYPE);
433 DUMPCOREAV(HDMI_CORE_AV_AVI_VERS);
434 DUMPCOREAV(HDMI_CORE_AV_AVI_LEN);
435 DUMPCOREAV(HDMI_CORE_AV_AVI_CHSUM);
436
437 for (i = 0; i < HDMI_CORE_AV_AVI_DBYTE_NELEMS; i++)
438 DUMPCOREAV2(i, HDMI_CORE_AV_AVI_DBYTE);
439
440 DUMPCOREAV(HDMI_CORE_AV_SPD_TYPE);
441 DUMPCOREAV(HDMI_CORE_AV_SPD_VERS);
442 DUMPCOREAV(HDMI_CORE_AV_SPD_LEN);
443 DUMPCOREAV(HDMI_CORE_AV_SPD_CHSUM);
444
445 for (i = 0; i < HDMI_CORE_AV_SPD_DBYTE_NELEMS; i++)
446 DUMPCOREAV2(i, HDMI_CORE_AV_SPD_DBYTE);
447
448 DUMPCOREAV(HDMI_CORE_AV_AUDIO_TYPE);
449 DUMPCOREAV(HDMI_CORE_AV_AUDIO_VERS);
450 DUMPCOREAV(HDMI_CORE_AV_AUDIO_LEN);
451 DUMPCOREAV(HDMI_CORE_AV_AUDIO_CHSUM);
452
453 for (i = 0; i < HDMI_CORE_AV_AUD_DBYTE_NELEMS; i++)
454 DUMPCOREAV2(i, HDMI_CORE_AV_AUD_DBYTE);
455
456 DUMPCOREAV(HDMI_CORE_AV_MPEG_TYPE);
457 DUMPCOREAV(HDMI_CORE_AV_MPEG_VERS);
458 DUMPCOREAV(HDMI_CORE_AV_MPEG_LEN);
459 DUMPCOREAV(HDMI_CORE_AV_MPEG_CHSUM);
460
461 for (i = 0; i < HDMI_CORE_AV_MPEG_DBYTE_NELEMS; i++)
462 DUMPCOREAV2(i, HDMI_CORE_AV_MPEG_DBYTE);
463
464 for (i = 0; i < HDMI_CORE_AV_GEN_DBYTE_NELEMS; i++)
465 DUMPCOREAV2(i, HDMI_CORE_AV_GEN_DBYTE);
466
467 DUMPCOREAV(HDMI_CORE_AV_CP_BYTE1);
468
469 for (i = 0; i < HDMI_CORE_AV_GEN2_DBYTE_NELEMS; i++)
470 DUMPCOREAV2(i, HDMI_CORE_AV_GEN2_DBYTE);
471
472 DUMPCOREAV(HDMI_CORE_AV_CEC_ADDR_ID);
473 }
474
hdmi_core_audio_config(struct hdmi_core_data * core,struct hdmi_core_audio_config * cfg)475 static void hdmi_core_audio_config(struct hdmi_core_data *core,
476 struct hdmi_core_audio_config *cfg)
477 {
478 u32 r;
479 void __iomem *av_base = hdmi_av_base(core);
480
481 /*
482 * Parameters for generation of Audio Clock Recovery packets
483 */
484 REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL1, cfg->n, 7, 0);
485 REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL2, cfg->n >> 8, 7, 0);
486 REG_FLD_MOD(av_base, HDMI_CORE_AV_N_SVAL3, cfg->n >> 16, 7, 0);
487
488 if (cfg->cts_mode == HDMI_AUDIO_CTS_MODE_SW) {
489 REG_FLD_MOD(av_base, HDMI_CORE_AV_CTS_SVAL1, cfg->cts, 7, 0);
490 REG_FLD_MOD(av_base,
491 HDMI_CORE_AV_CTS_SVAL2, cfg->cts >> 8, 7, 0);
492 REG_FLD_MOD(av_base,
493 HDMI_CORE_AV_CTS_SVAL3, cfg->cts >> 16, 7, 0);
494 } else {
495 REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_1,
496 cfg->aud_par_busclk, 7, 0);
497 REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_2,
498 (cfg->aud_par_busclk >> 8), 7, 0);
499 REG_FLD_MOD(av_base, HDMI_CORE_AV_AUD_PAR_BUSCLK_3,
500 (cfg->aud_par_busclk >> 16), 7, 0);
501 }
502
503 /* Set ACR clock divisor */
504 if (cfg->use_mclk)
505 REG_FLD_MOD(av_base, HDMI_CORE_AV_FREQ_SVAL,
506 cfg->mclk_mode, 2, 0);
507
508 r = hdmi_read_reg(av_base, HDMI_CORE_AV_ACR_CTRL);
509 /*
510 * Use TMDS clock for ACR packets. For devices that use
511 * the MCLK, this is the first part of the MCLK initialization.
512 */
513 r = FLD_MOD(r, 0, 2, 2);
514
515 r = FLD_MOD(r, cfg->en_acr_pkt, 1, 1);
516 r = FLD_MOD(r, cfg->cts_mode, 0, 0);
517 hdmi_write_reg(av_base, HDMI_CORE_AV_ACR_CTRL, r);
518
519 /* For devices using MCLK, this completes its initialization. */
520 if (cfg->use_mclk)
521 REG_FLD_MOD(av_base, HDMI_CORE_AV_ACR_CTRL, 1, 2, 2);
522
523 /* Override of SPDIF sample frequency with value in I2S_CHST4 */
524 REG_FLD_MOD(av_base, HDMI_CORE_AV_SPDIF_CTRL,
525 cfg->fs_override, 1, 1);
526
527 /*
528 * Set IEC-60958-3 channel status word. It is passed to the IP
529 * just as it is received. The user of the driver is responsible
530 * for its contents.
531 */
532 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST0,
533 cfg->iec60958_cfg->status[0]);
534 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST1,
535 cfg->iec60958_cfg->status[1]);
536 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST2,
537 cfg->iec60958_cfg->status[2]);
538 /* yes, this is correct: status[3] goes to CHST4 register */
539 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST4,
540 cfg->iec60958_cfg->status[3]);
541 /* yes, this is correct: status[4] goes to CHST5 register */
542 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_CHST5,
543 cfg->iec60958_cfg->status[4]);
544
545 /* set I2S parameters */
546 r = hdmi_read_reg(av_base, HDMI_CORE_AV_I2S_IN_CTRL);
547 r = FLD_MOD(r, cfg->i2s_cfg.sck_edge_mode, 6, 6);
548 r = FLD_MOD(r, cfg->i2s_cfg.vbit, 4, 4);
549 r = FLD_MOD(r, cfg->i2s_cfg.justification, 2, 2);
550 r = FLD_MOD(r, cfg->i2s_cfg.direction, 1, 1);
551 r = FLD_MOD(r, cfg->i2s_cfg.shift, 0, 0);
552 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_IN_CTRL, r);
553
554 REG_FLD_MOD(av_base, HDMI_CORE_AV_I2S_IN_LEN,
555 cfg->i2s_cfg.in_length_bits, 3, 0);
556
557 /* Audio channels and mode parameters */
558 REG_FLD_MOD(av_base, HDMI_CORE_AV_HDMI_CTRL, cfg->layout, 2, 1);
559 r = hdmi_read_reg(av_base, HDMI_CORE_AV_AUD_MODE);
560 r = FLD_MOD(r, cfg->i2s_cfg.active_sds, 7, 4);
561 r = FLD_MOD(r, cfg->en_dsd_audio, 3, 3);
562 r = FLD_MOD(r, cfg->en_parallel_aud_input, 2, 2);
563 r = FLD_MOD(r, cfg->en_spdif, 1, 1);
564 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_MODE, r);
565
566 /* Audio channel mappings */
567 /* TODO: Make channel mapping dynamic. For now, map channels
568 * in the ALSA order: FL/FR/RL/RR/C/LFE/SL/SR. Remapping is needed as
569 * HDMI speaker order is different. See CEA-861 Section 6.6.2.
570 */
571 hdmi_write_reg(av_base, HDMI_CORE_AV_I2S_IN_MAP, 0x78);
572 REG_FLD_MOD(av_base, HDMI_CORE_AV_SWAP_I2S, 1, 5, 5);
573 }
574
hdmi_core_audio_infoframe_cfg(struct hdmi_core_data * core,struct snd_cea_861_aud_if * info_aud)575 static void hdmi_core_audio_infoframe_cfg(struct hdmi_core_data *core,
576 struct snd_cea_861_aud_if *info_aud)
577 {
578 u8 sum = 0, checksum = 0;
579 void __iomem *av_base = hdmi_av_base(core);
580
581 /*
582 * Set audio info frame type, version and length as
583 * described in HDMI 1.4a Section 8.2.2 specification.
584 * Checksum calculation is defined in Section 5.3.5.
585 */
586 hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_TYPE, 0x84);
587 hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_VERS, 0x01);
588 hdmi_write_reg(av_base, HDMI_CORE_AV_AUDIO_LEN, 0x0a);
589 sum += 0x84 + 0x001 + 0x00a;
590
591 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(0),
592 info_aud->db1_ct_cc);
593 sum += info_aud->db1_ct_cc;
594
595 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(1),
596 info_aud->db2_sf_ss);
597 sum += info_aud->db2_sf_ss;
598
599 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(2), info_aud->db3);
600 sum += info_aud->db3;
601
602 /*
603 * The OMAP HDMI IP requires to use the 8-channel channel code when
604 * transmitting more than two channels.
605 */
606 if (info_aud->db4_ca != 0x00)
607 info_aud->db4_ca = 0x13;
608
609 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(3), info_aud->db4_ca);
610 sum += info_aud->db4_ca;
611
612 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(4),
613 info_aud->db5_dminh_lsv);
614 sum += info_aud->db5_dminh_lsv;
615
616 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(5), 0x00);
617 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(6), 0x00);
618 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(7), 0x00);
619 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(8), 0x00);
620 hdmi_write_reg(av_base, HDMI_CORE_AV_AUD_DBYTE(9), 0x00);
621
622 checksum = 0x100 - sum;
623 hdmi_write_reg(av_base,
624 HDMI_CORE_AV_AUDIO_CHSUM, checksum);
625
626 /*
627 * TODO: Add MPEG and SPD enable and repeat cfg when EDID parsing
628 * is available.
629 */
630 }
631
hdmi4_audio_config(struct hdmi_core_data * core,struct hdmi_wp_data * wp,struct omap_dss_audio * audio,u32 pclk)632 int hdmi4_audio_config(struct hdmi_core_data *core, struct hdmi_wp_data *wp,
633 struct omap_dss_audio *audio, u32 pclk)
634 {
635 struct hdmi_audio_format audio_format;
636 struct hdmi_audio_dma audio_dma;
637 struct hdmi_core_audio_config acore;
638 int n, cts, channel_count;
639 unsigned int fs_nr;
640 bool word_length_16b = false;
641
642 if (!audio || !audio->iec || !audio->cea || !core)
643 return -EINVAL;
644
645 acore.iec60958_cfg = audio->iec;
646 /*
647 * In the IEC-60958 status word, check if the audio sample word length
648 * is 16-bit as several optimizations can be performed in such case.
649 */
650 if (!(audio->iec->status[4] & IEC958_AES4_CON_MAX_WORDLEN_24))
651 if (audio->iec->status[4] & IEC958_AES4_CON_WORDLEN_20_16)
652 word_length_16b = true;
653
654 /* I2S configuration. See Phillips' specification */
655 if (word_length_16b)
656 acore.i2s_cfg.justification = HDMI_AUDIO_JUSTIFY_LEFT;
657 else
658 acore.i2s_cfg.justification = HDMI_AUDIO_JUSTIFY_RIGHT;
659 /*
660 * The I2S input word length is twice the length given in the IEC-60958
661 * status word. If the word size is greater than
662 * 20 bits, increment by one.
663 */
664 acore.i2s_cfg.in_length_bits = audio->iec->status[4]
665 & IEC958_AES4_CON_WORDLEN;
666 if (audio->iec->status[4] & IEC958_AES4_CON_MAX_WORDLEN_24)
667 acore.i2s_cfg.in_length_bits++;
668 acore.i2s_cfg.sck_edge_mode = HDMI_AUDIO_I2S_SCK_EDGE_RISING;
669 acore.i2s_cfg.vbit = HDMI_AUDIO_I2S_VBIT_FOR_PCM;
670 acore.i2s_cfg.direction = HDMI_AUDIO_I2S_MSB_SHIFTED_FIRST;
671 acore.i2s_cfg.shift = HDMI_AUDIO_I2S_FIRST_BIT_SHIFT;
672
673 /* convert sample frequency to a number */
674 switch (audio->iec->status[3] & IEC958_AES3_CON_FS) {
675 case IEC958_AES3_CON_FS_32000:
676 fs_nr = 32000;
677 break;
678 case IEC958_AES3_CON_FS_44100:
679 fs_nr = 44100;
680 break;
681 case IEC958_AES3_CON_FS_48000:
682 fs_nr = 48000;
683 break;
684 case IEC958_AES3_CON_FS_88200:
685 fs_nr = 88200;
686 break;
687 case IEC958_AES3_CON_FS_96000:
688 fs_nr = 96000;
689 break;
690 case IEC958_AES3_CON_FS_176400:
691 fs_nr = 176400;
692 break;
693 case IEC958_AES3_CON_FS_192000:
694 fs_nr = 192000;
695 break;
696 default:
697 return -EINVAL;
698 }
699
700 hdmi_compute_acr(pclk, fs_nr, &n, &cts);
701
702 /* Audio clock regeneration settings */
703 acore.n = n;
704 acore.cts = cts;
705 if (core->cts_swmode) {
706 acore.aud_par_busclk = 0;
707 acore.cts_mode = HDMI_AUDIO_CTS_MODE_SW;
708 acore.use_mclk = core->audio_use_mclk;
709 } else {
710 acore.aud_par_busclk = (((128 * 31) - 1) << 8);
711 acore.cts_mode = HDMI_AUDIO_CTS_MODE_HW;
712 acore.use_mclk = true;
713 }
714
715 if (acore.use_mclk)
716 acore.mclk_mode = HDMI_AUDIO_MCLK_128FS;
717
718 /* Audio channels settings */
719 channel_count = (audio->cea->db1_ct_cc &
720 CEA861_AUDIO_INFOFRAME_DB1CC) + 1;
721
722 switch (channel_count) {
723 case 2:
724 audio_format.active_chnnls_msk = 0x03;
725 break;
726 case 3:
727 audio_format.active_chnnls_msk = 0x07;
728 break;
729 case 4:
730 audio_format.active_chnnls_msk = 0x0f;
731 break;
732 case 5:
733 audio_format.active_chnnls_msk = 0x1f;
734 break;
735 case 6:
736 audio_format.active_chnnls_msk = 0x3f;
737 break;
738 case 7:
739 audio_format.active_chnnls_msk = 0x7f;
740 break;
741 case 8:
742 audio_format.active_chnnls_msk = 0xff;
743 break;
744 default:
745 return -EINVAL;
746 }
747
748 /*
749 * the HDMI IP needs to enable four stereo channels when transmitting
750 * more than 2 audio channels. Similarly, the channel count in the
751 * Audio InfoFrame has to match the sample_present bits (some channels
752 * are padded with zeroes)
753 */
754 if (channel_count == 2) {
755 audio_format.stereo_channels = HDMI_AUDIO_STEREO_ONECHANNEL;
756 acore.i2s_cfg.active_sds = HDMI_AUDIO_I2S_SD0_EN;
757 acore.layout = HDMI_AUDIO_LAYOUT_2CH;
758 } else {
759 audio_format.stereo_channels = HDMI_AUDIO_STEREO_FOURCHANNELS;
760 acore.i2s_cfg.active_sds = HDMI_AUDIO_I2S_SD0_EN |
761 HDMI_AUDIO_I2S_SD1_EN | HDMI_AUDIO_I2S_SD2_EN |
762 HDMI_AUDIO_I2S_SD3_EN;
763 acore.layout = HDMI_AUDIO_LAYOUT_8CH;
764 audio->cea->db1_ct_cc = 7;
765 }
766
767 acore.en_spdif = false;
768 /* use sample frequency from channel status word */
769 acore.fs_override = true;
770 /* enable ACR packets */
771 acore.en_acr_pkt = true;
772 /* disable direct streaming digital audio */
773 acore.en_dsd_audio = false;
774 /* use parallel audio interface */
775 acore.en_parallel_aud_input = true;
776
777 /* DMA settings */
778 if (word_length_16b)
779 audio_dma.transfer_size = 0x10;
780 else
781 audio_dma.transfer_size = 0x20;
782 audio_dma.block_size = 0xC0;
783 audio_dma.mode = HDMI_AUDIO_TRANSF_DMA;
784 audio_dma.fifo_threshold = 0x20; /* in number of samples */
785
786 /* audio FIFO format settings */
787 if (word_length_16b) {
788 audio_format.samples_per_word = HDMI_AUDIO_ONEWORD_TWOSAMPLES;
789 audio_format.sample_size = HDMI_AUDIO_SAMPLE_16BITS;
790 audio_format.justification = HDMI_AUDIO_JUSTIFY_LEFT;
791 } else {
792 audio_format.samples_per_word = HDMI_AUDIO_ONEWORD_ONESAMPLE;
793 audio_format.sample_size = HDMI_AUDIO_SAMPLE_24BITS;
794 audio_format.justification = HDMI_AUDIO_JUSTIFY_RIGHT;
795 }
796 audio_format.type = HDMI_AUDIO_TYPE_LPCM;
797 audio_format.sample_order = HDMI_AUDIO_SAMPLE_LEFT_FIRST;
798 /* disable start/stop signals of IEC 60958 blocks */
799 audio_format.en_sig_blk_strt_end = HDMI_AUDIO_BLOCK_SIG_STARTEND_ON;
800
801 /* configure DMA and audio FIFO format*/
802 hdmi_wp_audio_config_dma(wp, &audio_dma);
803 hdmi_wp_audio_config_format(wp, &audio_format);
804
805 /* configure the core*/
806 hdmi_core_audio_config(core, &acore);
807
808 /* configure CEA 861 audio infoframe*/
809 hdmi_core_audio_infoframe_cfg(core, audio->cea);
810
811 return 0;
812 }
813
hdmi4_audio_start(struct hdmi_core_data * core,struct hdmi_wp_data * wp)814 int hdmi4_audio_start(struct hdmi_core_data *core, struct hdmi_wp_data *wp)
815 {
816 REG_FLD_MOD(hdmi_av_base(core),
817 HDMI_CORE_AV_AUD_MODE, true, 0, 0);
818
819 hdmi_wp_audio_core_req_enable(wp, true);
820
821 return 0;
822 }
823
hdmi4_audio_stop(struct hdmi_core_data * core,struct hdmi_wp_data * wp)824 void hdmi4_audio_stop(struct hdmi_core_data *core, struct hdmi_wp_data *wp)
825 {
826 REG_FLD_MOD(hdmi_av_base(core),
827 HDMI_CORE_AV_AUD_MODE, false, 0, 0);
828
829 hdmi_wp_audio_core_req_enable(wp, false);
830 }
831
832 struct hdmi4_features {
833 bool cts_swmode;
834 bool audio_use_mclk;
835 };
836
837 static const struct hdmi4_features hdmi4430_es1_features = {
838 .cts_swmode = false,
839 .audio_use_mclk = false,
840 };
841
842 static const struct hdmi4_features hdmi4430_es2_features = {
843 .cts_swmode = true,
844 .audio_use_mclk = false,
845 };
846
847 static const struct hdmi4_features hdmi4_features = {
848 .cts_swmode = true,
849 .audio_use_mclk = true,
850 };
851
852 static const struct soc_device_attribute hdmi4_soc_devices[] = {
853 {
854 .machine = "OMAP4430",
855 .revision = "ES1.?",
856 .data = &hdmi4430_es1_features,
857 },
858 {
859 .machine = "OMAP4430",
860 .revision = "ES2.?",
861 .data = &hdmi4430_es2_features,
862 },
863 {
864 .family = "OMAP4",
865 .data = &hdmi4_features,
866 },
867 { /* sentinel */ }
868 };
869
hdmi4_core_init(struct platform_device * pdev,struct hdmi_core_data * core)870 int hdmi4_core_init(struct platform_device *pdev, struct hdmi_core_data *core)
871 {
872 const struct hdmi4_features *features;
873 const struct soc_device_attribute *soc;
874
875 soc = soc_device_match(hdmi4_soc_devices);
876 if (!soc)
877 return -ENODEV;
878
879 features = soc->data;
880 core->cts_swmode = features->cts_swmode;
881 core->audio_use_mclk = features->audio_use_mclk;
882
883 core->base = devm_platform_ioremap_resource_byname(pdev, "core");
884 if (IS_ERR(core->base))
885 return PTR_ERR(core->base);
886
887 return 0;
888 }
889