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WIP FPC-III support
[linux/fpc-iii.git] / drivers / gpu / drm / tegra / hdmi.c
blobd09a24931c87cbb8499490fdfba287401d0fbf04
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2012 Avionic Design GmbH
4 * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
5 */
6
7 #include <linux/clk.h>
8 #include <linux/debugfs.h>
9 #include <linux/delay.h>
10 #include <linux/hdmi.h>
11 #include <linux/math64.h>
12 #include <linux/module.h>
13 #include <linux/of_device.h>
14 #include <linux/pm_runtime.h>
15 #include <linux/regulator/consumer.h>
16 #include <linux/reset.h>
17
18 #include <drm/drm_atomic_helper.h>
19 #include <drm/drm_crtc.h>
20 #include <drm/drm_debugfs.h>
21 #include <drm/drm_file.h>
22 #include <drm/drm_fourcc.h>
23 #include <drm/drm_probe_helper.h>
24 #include <drm/drm_simple_kms_helper.h>
25
26 #include "hda.h"
27 #include "hdmi.h"
28 #include "drm.h"
29 #include "dc.h"
30 #include "trace.h"
31
32 #define HDMI_ELD_BUFFER_SIZE 96
33
34 struct tmds_config {
35 unsigned int pclk;
36 u32 pll0;
37 u32 pll1;
38 u32 pe_current;
39 u32 drive_current;
40 u32 peak_current;
41 };
42
43 struct tegra_hdmi_config {
44 const struct tmds_config *tmds;
45 unsigned int num_tmds;
46
47 unsigned long fuse_override_offset;
48 u32 fuse_override_value;
49
50 bool has_sor_io_peak_current;
51 bool has_hda;
52 bool has_hbr;
53 };
54
55 struct tegra_hdmi {
56 struct host1x_client client;
57 struct tegra_output output;
58 struct device *dev;
59
60 struct regulator *hdmi;
61 struct regulator *pll;
62 struct regulator *vdd;
63
64 void __iomem *regs;
65 unsigned int irq;
66
67 struct clk *clk_parent;
68 struct clk *clk;
69 struct reset_control *rst;
70
71 const struct tegra_hdmi_config *config;
72
73 unsigned int audio_source;
74 struct tegra_hda_format format;
75
76 unsigned int pixel_clock;
77 bool stereo;
78 bool dvi;
79
80 struct drm_info_list *debugfs_files;
81 };
82
83 static inline struct tegra_hdmi *
84 host1x_client_to_hdmi(struct host1x_client *client)
85 {
86 return container_of(client, struct tegra_hdmi, client);
87 }
88
89 static inline struct tegra_hdmi *to_hdmi(struct tegra_output *output)
90 {
91 return container_of(output, struct tegra_hdmi, output);
92 }
93
94 #define HDMI_AUDIOCLK_FREQ 216000000
95 #define HDMI_REKEY_DEFAULT 56
96
97 enum {
98 AUTO = 0,
99 SPDIF,
100 HDA,
101 };
102
103 static inline u32 tegra_hdmi_readl(struct tegra_hdmi *hdmi,
104 unsigned int offset)
105 {
106 u32 value = readl(hdmi->regs + (offset << 2));
107
108 trace_hdmi_readl(hdmi->dev, offset, value);
109
110 return value;
111 }
112
113 static inline void tegra_hdmi_writel(struct tegra_hdmi *hdmi, u32 value,
114 unsigned int offset)
115 {
116 trace_hdmi_writel(hdmi->dev, offset, value);
117 writel(value, hdmi->regs + (offset << 2));
118 }
119
120 struct tegra_hdmi_audio_config {
121 unsigned int n;
122 unsigned int cts;
123 unsigned int aval;
124 };
125
126 static const struct tmds_config tegra20_tmds_config[] = {
127 { /* slow pixel clock modes */
128 .pclk = 27000000,
129 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
130 SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(0) |
131 SOR_PLL_TX_REG_LOAD(3),
132 .pll1 = SOR_PLL_TMDS_TERM_ENABLE,
133 .pe_current = PE_CURRENT0(PE_CURRENT_0_0_mA) |
134 PE_CURRENT1(PE_CURRENT_0_0_mA) |
135 PE_CURRENT2(PE_CURRENT_0_0_mA) |
136 PE_CURRENT3(PE_CURRENT_0_0_mA),
137 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_7_125_mA) |
138 DRIVE_CURRENT_LANE1(DRIVE_CURRENT_7_125_mA) |
139 DRIVE_CURRENT_LANE2(DRIVE_CURRENT_7_125_mA) |
140 DRIVE_CURRENT_LANE3(DRIVE_CURRENT_7_125_mA),
141 },
142 { /* high pixel clock modes */
143 .pclk = UINT_MAX,
144 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
145 SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(1) |
146 SOR_PLL_TX_REG_LOAD(3),
147 .pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN,
148 .pe_current = PE_CURRENT0(PE_CURRENT_6_0_mA) |
149 PE_CURRENT1(PE_CURRENT_6_0_mA) |
150 PE_CURRENT2(PE_CURRENT_6_0_mA) |
151 PE_CURRENT3(PE_CURRENT_6_0_mA),
152 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_7_125_mA) |
153 DRIVE_CURRENT_LANE1(DRIVE_CURRENT_7_125_mA) |
154 DRIVE_CURRENT_LANE2(DRIVE_CURRENT_7_125_mA) |
155 DRIVE_CURRENT_LANE3(DRIVE_CURRENT_7_125_mA),
156 },
157 };
158
159 static const struct tmds_config tegra30_tmds_config[] = {
160 { /* 480p modes */
161 .pclk = 27000000,
162 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
163 SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(0) |
164 SOR_PLL_TX_REG_LOAD(0),
165 .pll1 = SOR_PLL_TMDS_TERM_ENABLE,
166 .pe_current = PE_CURRENT0(PE_CURRENT_0_0_mA) |
167 PE_CURRENT1(PE_CURRENT_0_0_mA) |
168 PE_CURRENT2(PE_CURRENT_0_0_mA) |
169 PE_CURRENT3(PE_CURRENT_0_0_mA),
170 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) |
171 DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) |
172 DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) |
173 DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA),
174 }, { /* 720p modes */
175 .pclk = 74250000,
176 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
177 SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(1) |
178 SOR_PLL_TX_REG_LOAD(0),
179 .pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN,
180 .pe_current = PE_CURRENT0(PE_CURRENT_5_0_mA) |
181 PE_CURRENT1(PE_CURRENT_5_0_mA) |
182 PE_CURRENT2(PE_CURRENT_5_0_mA) |
183 PE_CURRENT3(PE_CURRENT_5_0_mA),
184 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) |
185 DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) |
186 DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) |
187 DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA),
188 }, { /* 1080p modes */
189 .pclk = UINT_MAX,
190 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
191 SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(3) |
192 SOR_PLL_TX_REG_LOAD(0),
193 .pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN,
194 .pe_current = PE_CURRENT0(PE_CURRENT_5_0_mA) |
195 PE_CURRENT1(PE_CURRENT_5_0_mA) |
196 PE_CURRENT2(PE_CURRENT_5_0_mA) |
197 PE_CURRENT3(PE_CURRENT_5_0_mA),
198 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) |
199 DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) |
200 DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) |
201 DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA),
202 },
203 };
204
205 static const struct tmds_config tegra114_tmds_config[] = {
206 { /* 480p/576p / 25.2MHz/27MHz modes */
207 .pclk = 27000000,
208 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
209 SOR_PLL_VCOCAP(0) | SOR_PLL_RESISTORSEL,
210 .pll1 = SOR_PLL_LOADADJ(3) | SOR_PLL_TMDS_TERMADJ(0),
211 .pe_current = PE_CURRENT0(PE_CURRENT_0_mA_T114) |
212 PE_CURRENT1(PE_CURRENT_0_mA_T114) |
213 PE_CURRENT2(PE_CURRENT_0_mA_T114) |
214 PE_CURRENT3(PE_CURRENT_0_mA_T114),
215 .drive_current =
216 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_10_400_mA_T114) |
217 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_10_400_mA_T114) |
218 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_10_400_mA_T114) |
219 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_10_400_mA_T114),
220 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
221 PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
222 PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
223 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
224 }, { /* 720p / 74.25MHz modes */
225 .pclk = 74250000,
226 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
227 SOR_PLL_VCOCAP(1) | SOR_PLL_RESISTORSEL,
228 .pll1 = SOR_PLL_PE_EN | SOR_PLL_LOADADJ(3) |
229 SOR_PLL_TMDS_TERMADJ(0),
230 .pe_current = PE_CURRENT0(PE_CURRENT_15_mA_T114) |
231 PE_CURRENT1(PE_CURRENT_15_mA_T114) |
232 PE_CURRENT2(PE_CURRENT_15_mA_T114) |
233 PE_CURRENT3(PE_CURRENT_15_mA_T114),
234 .drive_current =
235 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_10_400_mA_T114) |
236 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_10_400_mA_T114) |
237 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_10_400_mA_T114) |
238 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_10_400_mA_T114),
239 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
240 PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
241 PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
242 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
243 }, { /* 1080p / 148.5MHz modes */
244 .pclk = 148500000,
245 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
246 SOR_PLL_VCOCAP(3) | SOR_PLL_RESISTORSEL,
247 .pll1 = SOR_PLL_PE_EN | SOR_PLL_LOADADJ(3) |
248 SOR_PLL_TMDS_TERMADJ(0),
249 .pe_current = PE_CURRENT0(PE_CURRENT_10_mA_T114) |
250 PE_CURRENT1(PE_CURRENT_10_mA_T114) |
251 PE_CURRENT2(PE_CURRENT_10_mA_T114) |
252 PE_CURRENT3(PE_CURRENT_10_mA_T114),
253 .drive_current =
254 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_12_400_mA_T114) |
255 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_12_400_mA_T114) |
256 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_12_400_mA_T114) |
257 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_12_400_mA_T114),
258 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
259 PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
260 PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
261 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
262 }, { /* 225/297MHz modes */
263 .pclk = UINT_MAX,
264 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
265 SOR_PLL_VCOCAP(0xf) | SOR_PLL_RESISTORSEL,
266 .pll1 = SOR_PLL_LOADADJ(3) | SOR_PLL_TMDS_TERMADJ(7)
267 | SOR_PLL_TMDS_TERM_ENABLE,
268 .pe_current = PE_CURRENT0(PE_CURRENT_0_mA_T114) |
269 PE_CURRENT1(PE_CURRENT_0_mA_T114) |
270 PE_CURRENT2(PE_CURRENT_0_mA_T114) |
271 PE_CURRENT3(PE_CURRENT_0_mA_T114),
272 .drive_current =
273 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_25_200_mA_T114) |
274 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_25_200_mA_T114) |
275 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_25_200_mA_T114) |
276 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_19_200_mA_T114),
277 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_3_000_mA) |
278 PEAK_CURRENT_LANE1(PEAK_CURRENT_3_000_mA) |
279 PEAK_CURRENT_LANE2(PEAK_CURRENT_3_000_mA) |
280 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_800_mA),
281 },
282 };
283
284 static const struct tmds_config tegra124_tmds_config[] = {
285 { /* 480p/576p / 25.2MHz/27MHz modes */
286 .pclk = 27000000,
287 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
288 SOR_PLL_VCOCAP(0) | SOR_PLL_RESISTORSEL,
289 .pll1 = SOR_PLL_LOADADJ(3) | SOR_PLL_TMDS_TERMADJ(0),
290 .pe_current = PE_CURRENT0(PE_CURRENT_0_mA_T114) |
291 PE_CURRENT1(PE_CURRENT_0_mA_T114) |
292 PE_CURRENT2(PE_CURRENT_0_mA_T114) |
293 PE_CURRENT3(PE_CURRENT_0_mA_T114),
294 .drive_current =
295 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_10_400_mA_T114) |
296 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_10_400_mA_T114) |
297 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_10_400_mA_T114) |
298 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_10_400_mA_T114),
299 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
300 PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
301 PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
302 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
303 }, { /* 720p / 74.25MHz modes */
304 .pclk = 74250000,
305 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
306 SOR_PLL_VCOCAP(1) | SOR_PLL_RESISTORSEL,
307 .pll1 = SOR_PLL_PE_EN | SOR_PLL_LOADADJ(3) |
308 SOR_PLL_TMDS_TERMADJ(0),
309 .pe_current = PE_CURRENT0(PE_CURRENT_15_mA_T114) |
310 PE_CURRENT1(PE_CURRENT_15_mA_T114) |
311 PE_CURRENT2(PE_CURRENT_15_mA_T114) |
312 PE_CURRENT3(PE_CURRENT_15_mA_T114),
313 .drive_current =
314 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_10_400_mA_T114) |
315 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_10_400_mA_T114) |
316 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_10_400_mA_T114) |
317 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_10_400_mA_T114),
318 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
319 PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
320 PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
321 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
322 }, { /* 1080p / 148.5MHz modes */
323 .pclk = 148500000,
324 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
325 SOR_PLL_VCOCAP(3) | SOR_PLL_RESISTORSEL,
326 .pll1 = SOR_PLL_PE_EN | SOR_PLL_LOADADJ(3) |
327 SOR_PLL_TMDS_TERMADJ(0),
328 .pe_current = PE_CURRENT0(PE_CURRENT_10_mA_T114) |
329 PE_CURRENT1(PE_CURRENT_10_mA_T114) |
330 PE_CURRENT2(PE_CURRENT_10_mA_T114) |
331 PE_CURRENT3(PE_CURRENT_10_mA_T114),
332 .drive_current =
333 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_12_400_mA_T114) |
334 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_12_400_mA_T114) |
335 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_12_400_mA_T114) |
336 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_12_400_mA_T114),
337 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
338 PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
339 PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
340 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
341 }, { /* 225/297MHz modes */
342 .pclk = UINT_MAX,
343 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
344 SOR_PLL_VCOCAP(0xf) | SOR_PLL_RESISTORSEL,
345 .pll1 = SOR_PLL_LOADADJ(3) | SOR_PLL_TMDS_TERMADJ(7)
346 | SOR_PLL_TMDS_TERM_ENABLE,
347 .pe_current = PE_CURRENT0(PE_CURRENT_0_mA_T114) |
348 PE_CURRENT1(PE_CURRENT_0_mA_T114) |
349 PE_CURRENT2(PE_CURRENT_0_mA_T114) |
350 PE_CURRENT3(PE_CURRENT_0_mA_T114),
351 .drive_current =
352 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_25_200_mA_T114) |
353 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_25_200_mA_T114) |
354 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_25_200_mA_T114) |
355 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_19_200_mA_T114),
356 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_3_000_mA) |
357 PEAK_CURRENT_LANE1(PEAK_CURRENT_3_000_mA) |
358 PEAK_CURRENT_LANE2(PEAK_CURRENT_3_000_mA) |
359 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_800_mA),
360 },
361 };
362
363 static int
364 tegra_hdmi_get_audio_config(unsigned int audio_freq, unsigned int pix_clock,
365 struct tegra_hdmi_audio_config *config)
366 {
367 const unsigned int afreq = 128 * audio_freq;
368 const unsigned int min_n = afreq / 1500;
369 const unsigned int max_n = afreq / 300;
370 const unsigned int ideal_n = afreq / 1000;
371 int64_t min_err = (uint64_t)-1 >> 1;
372 unsigned int min_delta = -1;
373 int n;
374
375 memset(config, 0, sizeof(*config));
376 config->n = -1;
377
378 for (n = min_n; n <= max_n; n++) {
379 uint64_t cts_f, aval_f;
380 unsigned int delta;
381 int64_t cts, err;
382
383 /* compute aval in 48.16 fixed point */
384 aval_f = ((int64_t)24000000 << 16) * n;
385 do_div(aval_f, afreq);
386 /* It should round without any rest */
387 if (aval_f & 0xFFFF)
388 continue;
389
390 /* Compute cts in 48.16 fixed point */
391 cts_f = ((int64_t)pix_clock << 16) * n;
392 do_div(cts_f, afreq);
393 /* Round it to the nearest integer */
394 cts = (cts_f & ~0xFFFF) + ((cts_f & BIT(15)) << 1);
395
396 delta = abs(n - ideal_n);
397
398 /* Compute the absolute error */
399 err = abs((int64_t)cts_f - cts);
400 if (err < min_err || (err == min_err && delta < min_delta)) {
401 config->n = n;
402 config->cts = cts >> 16;
403 config->aval = aval_f >> 16;
404 min_delta = delta;
405 min_err = err;
406 }
407 }
408
409 return config->n != -1 ? 0 : -EINVAL;
410 }
411
412 static void tegra_hdmi_setup_audio_fs_tables(struct tegra_hdmi *hdmi)
413 {
414 const unsigned int freqs[] = {
415 32000, 44100, 48000, 88200, 96000, 176400, 192000
416 };
417 unsigned int i;
418
419 for (i = 0; i < ARRAY_SIZE(freqs); i++) {
420 unsigned int f = freqs[i];
421 unsigned int eight_half;
422 unsigned int delta;
423 u32 value;
424
425 if (f > 96000)
426 delta = 2;
427 else if (f > 48000)
428 delta = 6;
429 else
430 delta = 9;
431
432 eight_half = (8 * HDMI_AUDIOCLK_FREQ) / (f * 128);
433 value = AUDIO_FS_LOW(eight_half - delta) |
434 AUDIO_FS_HIGH(eight_half + delta);
435 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_FS(i));
436 }
437 }
438
439 static void tegra_hdmi_write_aval(struct tegra_hdmi *hdmi, u32 value)
440 {
441 static const struct {
442 unsigned int sample_rate;
443 unsigned int offset;
444 } regs[] = {
445 { 32000, HDMI_NV_PDISP_SOR_AUDIO_AVAL_0320 },
446 { 44100, HDMI_NV_PDISP_SOR_AUDIO_AVAL_0441 },
447 { 48000, HDMI_NV_PDISP_SOR_AUDIO_AVAL_0480 },
448 { 88200, HDMI_NV_PDISP_SOR_AUDIO_AVAL_0882 },
449 { 96000, HDMI_NV_PDISP_SOR_AUDIO_AVAL_0960 },
450 { 176400, HDMI_NV_PDISP_SOR_AUDIO_AVAL_1764 },
451 { 192000, HDMI_NV_PDISP_SOR_AUDIO_AVAL_1920 },
452 };
453 unsigned int i;
454
455 for (i = 0; i < ARRAY_SIZE(regs); i++) {
456 if (regs[i].sample_rate == hdmi->format.sample_rate) {
457 tegra_hdmi_writel(hdmi, value, regs[i].offset);
458 break;
459 }
460 }
461 }
462
463 static int tegra_hdmi_setup_audio(struct tegra_hdmi *hdmi)
464 {
465 struct tegra_hdmi_audio_config config;
466 u32 source, value;
467 int err;
468
469 switch (hdmi->audio_source) {
470 case HDA:
471 if (hdmi->config->has_hda)
472 source = SOR_AUDIO_CNTRL0_SOURCE_SELECT_HDAL;
473 else
474 return -EINVAL;
475
476 break;
477
478 case SPDIF:
479 if (hdmi->config->has_hda)
480 source = SOR_AUDIO_CNTRL0_SOURCE_SELECT_SPDIF;
481 else
482 source = AUDIO_CNTRL0_SOURCE_SELECT_SPDIF;
483 break;
484
485 default:
486 if (hdmi->config->has_hda)
487 source = SOR_AUDIO_CNTRL0_SOURCE_SELECT_AUTO;
488 else
489 source = AUDIO_CNTRL0_SOURCE_SELECT_AUTO;
490 break;
491 }
492
493 /*
494 * Tegra30 and later use a slightly modified version of the register
495 * layout to accomodate for changes related to supporting HDA as the
496 * audio input source for HDMI. The source select field has moved to
497 * the SOR_AUDIO_CNTRL0 register, but the error tolerance and frames
498 * per block fields remain in the AUDIO_CNTRL0 register.
499 */
500 if (hdmi->config->has_hda) {
501 /*
502 * Inject null samples into the audio FIFO for every frame in
503 * which the codec did not receive any samples. This applies
504 * to stereo LPCM only.
505 *
506 * XXX: This seems to be a remnant of MCP days when this was
507 * used to work around issues with monitors not being able to
508 * play back system startup sounds early. It is possibly not
509 * needed on Linux at all.
510 */
511 if (hdmi->format.channels == 2)
512 value = SOR_AUDIO_CNTRL0_INJECT_NULLSMPL;
513 else
514 value = 0;
515
516 value |= source;
517
518 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_AUDIO_CNTRL0);
519 }
520
521 /*
522 * On Tegra20, HDA is not a supported audio source and the source
523 * select field is part of the AUDIO_CNTRL0 register.
524 */
525 value = AUDIO_CNTRL0_FRAMES_PER_BLOCK(0xc0) |
526 AUDIO_CNTRL0_ERROR_TOLERANCE(6);
527
528 if (!hdmi->config->has_hda)
529 value |= source;
530
531 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_CNTRL0);
532
533 /*
534 * Advertise support for High Bit-Rate on Tegra114 and later.
535 */
536 if (hdmi->config->has_hbr) {
537 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_AUDIO_SPARE0);
538 value |= SOR_AUDIO_SPARE0_HBR_ENABLE;
539 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_AUDIO_SPARE0);
540 }
541
542 err = tegra_hdmi_get_audio_config(hdmi->format.sample_rate,
543 hdmi->pixel_clock, &config);
544 if (err < 0) {
545 dev_err(hdmi->dev,
546 "cannot set audio to %u Hz at %u Hz pixel clock\n",
547 hdmi->format.sample_rate, hdmi->pixel_clock);
548 return err;
549 }
550
551 dev_dbg(hdmi->dev, "audio: pixclk=%u, n=%u, cts=%u, aval=%u\n",
552 hdmi->pixel_clock, config.n, config.cts, config.aval);
553
554 tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_HDMI_ACR_CTRL);
555
556 value = AUDIO_N_RESETF | AUDIO_N_GENERATE_ALTERNATE |
557 AUDIO_N_VALUE(config.n - 1);
558 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_N);
559
560 tegra_hdmi_writel(hdmi, ACR_SUBPACK_N(config.n) | ACR_ENABLE,
561 HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_HIGH);
562
563 tegra_hdmi_writel(hdmi, ACR_SUBPACK_CTS(config.cts),
564 HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_LOW);
565
566 value = SPARE_HW_CTS | SPARE_FORCE_SW_CTS | SPARE_CTS_RESET_VAL(1);
567 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_SPARE);
568
569 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_AUDIO_N);
570 value &= ~AUDIO_N_RESETF;
571 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_N);
572
573 if (hdmi->config->has_hda)
574 tegra_hdmi_write_aval(hdmi, config.aval);
575
576 tegra_hdmi_setup_audio_fs_tables(hdmi);
577
578 return 0;
579 }
580
581 static void tegra_hdmi_disable_audio(struct tegra_hdmi *hdmi)
582 {
583 u32 value;
584
585 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
586 value &= ~GENERIC_CTRL_AUDIO;
587 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
588 }
589
590 static void tegra_hdmi_enable_audio(struct tegra_hdmi *hdmi)
591 {
592 u32 value;
593
594 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
595 value |= GENERIC_CTRL_AUDIO;
596 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
597 }
598
599 static void tegra_hdmi_write_eld(struct tegra_hdmi *hdmi)
600 {
601 size_t length = drm_eld_size(hdmi->output.connector.eld), i;
602 u32 value;
603
604 for (i = 0; i < length; i++)
605 tegra_hdmi_writel(hdmi, i << 8 | hdmi->output.connector.eld[i],
606 HDMI_NV_PDISP_SOR_AUDIO_HDA_ELD_BUFWR);
607
608 /*
609 * The HDA codec will always report an ELD buffer size of 96 bytes and
610 * the HDA codec driver will check that each byte read from the buffer
611 * is valid. Therefore every byte must be written, even if no 96 bytes
612 * were parsed from EDID.
613 */
614 for (i = length; i < HDMI_ELD_BUFFER_SIZE; i++)
615 tegra_hdmi_writel(hdmi, i << 8 | 0,
616 HDMI_NV_PDISP_SOR_AUDIO_HDA_ELD_BUFWR);
617
618 value = SOR_AUDIO_HDA_PRESENSE_VALID | SOR_AUDIO_HDA_PRESENSE_PRESENT;
619 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_AUDIO_HDA_PRESENSE);
620 }
621
622 static inline u32 tegra_hdmi_subpack(const u8 *ptr, size_t size)
623 {
624 u32 value = 0;
625 size_t i;
626
627 for (i = size; i > 0; i--)
628 value = (value << 8) | ptr[i - 1];
629
630 return value;
631 }
632
633 static void tegra_hdmi_write_infopack(struct tegra_hdmi *hdmi, const void *data,
634 size_t size)
635 {
636 const u8 *ptr = data;
637 unsigned long offset;
638 size_t i, j;
639 u32 value;
640
641 switch (ptr[0]) {
642 case HDMI_INFOFRAME_TYPE_AVI:
643 offset = HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_HEADER;
644 break;
645
646 case HDMI_INFOFRAME_TYPE_AUDIO:
647 offset = HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_HEADER;
648 break;
649
650 case HDMI_INFOFRAME_TYPE_VENDOR:
651 offset = HDMI_NV_PDISP_HDMI_GENERIC_HEADER;
652 break;
653
654 default:
655 dev_err(hdmi->dev, "unsupported infoframe type: %02x\n",
656 ptr[0]);
657 return;
658 }
659
660 value = INFOFRAME_HEADER_TYPE(ptr[0]) |
661 INFOFRAME_HEADER_VERSION(ptr[1]) |
662 INFOFRAME_HEADER_LEN(ptr[2]);
663 tegra_hdmi_writel(hdmi, value, offset);
664 offset++;
665
666 /*
667 * Each subpack contains 7 bytes, divided into:
668 * - subpack_low: bytes 0 - 3
669 * - subpack_high: bytes 4 - 6 (with byte 7 padded to 0x00)
670 */
671 for (i = 3, j = 0; i < size; i += 7, j += 8) {
672 size_t rem = size - i, num = min_t(size_t, rem, 4);
673
674 value = tegra_hdmi_subpack(&ptr[i], num);
675 tegra_hdmi_writel(hdmi, value, offset++);
676
677 num = min_t(size_t, rem - num, 3);
678
679 value = tegra_hdmi_subpack(&ptr[i + 4], num);
680 tegra_hdmi_writel(hdmi, value, offset++);
681 }
682 }
683
684 static void tegra_hdmi_setup_avi_infoframe(struct tegra_hdmi *hdmi,
685 struct drm_display_mode *mode)
686 {
687 struct hdmi_avi_infoframe frame;
688 u8 buffer[17];
689 ssize_t err;
690
691 err = drm_hdmi_avi_infoframe_from_display_mode(&frame,
692 &hdmi->output.connector, mode);
693 if (err < 0) {
694 dev_err(hdmi->dev, "failed to setup AVI infoframe: %zd\n", err);
695 return;
696 }
697
698 err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
699 if (err < 0) {
700 dev_err(hdmi->dev, "failed to pack AVI infoframe: %zd\n", err);
701 return;
702 }
703
704 tegra_hdmi_write_infopack(hdmi, buffer, err);
705 }
706
707 static void tegra_hdmi_disable_avi_infoframe(struct tegra_hdmi *hdmi)
708 {
709 u32 value;
710
711 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL);
712 value &= ~INFOFRAME_CTRL_ENABLE;
713 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL);
714 }
715
716 static void tegra_hdmi_enable_avi_infoframe(struct tegra_hdmi *hdmi)
717 {
718 u32 value;
719
720 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL);
721 value |= INFOFRAME_CTRL_ENABLE;
722 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL);
723 }
724
725 static void tegra_hdmi_setup_audio_infoframe(struct tegra_hdmi *hdmi)
726 {
727 struct hdmi_audio_infoframe frame;
728 u8 buffer[14];
729 ssize_t err;
730
731 err = hdmi_audio_infoframe_init(&frame);
732 if (err < 0) {
733 dev_err(hdmi->dev, "failed to setup audio infoframe: %zd\n",
734 err);
735 return;
736 }
737
738 frame.channels = hdmi->format.channels;
739
740 err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
741 if (err < 0) {
742 dev_err(hdmi->dev, "failed to pack audio infoframe: %zd\n",
743 err);
744 return;
745 }
746
747 /*
748 * The audio infoframe has only one set of subpack registers, so the
749 * infoframe needs to be truncated. One set of subpack registers can
750 * contain 7 bytes. Including the 3 byte header only the first 10
751 * bytes can be programmed.
752 */
753 tegra_hdmi_write_infopack(hdmi, buffer, min_t(size_t, 10, err));
754 }
755
756 static void tegra_hdmi_disable_audio_infoframe(struct tegra_hdmi *hdmi)
757 {
758 u32 value;
759
760 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL);
761 value &= ~INFOFRAME_CTRL_ENABLE;
762 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL);
763 }
764
765 static void tegra_hdmi_enable_audio_infoframe(struct tegra_hdmi *hdmi)
766 {
767 u32 value;
768
769 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL);
770 value |= INFOFRAME_CTRL_ENABLE;
771 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL);
772 }
773
774 static void tegra_hdmi_setup_stereo_infoframe(struct tegra_hdmi *hdmi)
775 {
776 struct hdmi_vendor_infoframe frame;
777 u8 buffer[10];
778 ssize_t err;
779
780 hdmi_vendor_infoframe_init(&frame);
781 frame.s3d_struct = HDMI_3D_STRUCTURE_FRAME_PACKING;
782
783 err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer));
784 if (err < 0) {
785 dev_err(hdmi->dev, "failed to pack vendor infoframe: %zd\n",
786 err);
787 return;
788 }
789
790 tegra_hdmi_write_infopack(hdmi, buffer, err);
791 }
792
793 static void tegra_hdmi_disable_stereo_infoframe(struct tegra_hdmi *hdmi)
794 {
795 u32 value;
796
797 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
798 value &= ~GENERIC_CTRL_ENABLE;
799 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
800 }
801
802 static void tegra_hdmi_enable_stereo_infoframe(struct tegra_hdmi *hdmi)
803 {
804 u32 value;
805
806 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
807 value |= GENERIC_CTRL_ENABLE;
808 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
809 }
810
811 static void tegra_hdmi_setup_tmds(struct tegra_hdmi *hdmi,
812 const struct tmds_config *tmds)
813 {
814 u32 value;
815
816 tegra_hdmi_writel(hdmi, tmds->pll0, HDMI_NV_PDISP_SOR_PLL0);
817 tegra_hdmi_writel(hdmi, tmds->pll1, HDMI_NV_PDISP_SOR_PLL1);
818 tegra_hdmi_writel(hdmi, tmds->pe_current, HDMI_NV_PDISP_PE_CURRENT);
819
820 tegra_hdmi_writel(hdmi, tmds->drive_current,
821 HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT);
822
823 value = tegra_hdmi_readl(hdmi, hdmi->config->fuse_override_offset);
824 value |= hdmi->config->fuse_override_value;
825 tegra_hdmi_writel(hdmi, value, hdmi->config->fuse_override_offset);
826
827 if (hdmi->config->has_sor_io_peak_current)
828 tegra_hdmi_writel(hdmi, tmds->peak_current,
829 HDMI_NV_PDISP_SOR_IO_PEAK_CURRENT);
830 }
831
832 static bool tegra_output_is_hdmi(struct tegra_output *output)
833 {
834 struct edid *edid;
835
836 if (!output->connector.edid_blob_ptr)
837 return false;
838
839 edid = (struct edid *)output->connector.edid_blob_ptr->data;
840
841 return drm_detect_hdmi_monitor(edid);
842 }
843
844 static enum drm_connector_status
845 tegra_hdmi_connector_detect(struct drm_connector *connector, bool force)
846 {
847 struct tegra_output *output = connector_to_output(connector);
848 struct tegra_hdmi *hdmi = to_hdmi(output);
849 enum drm_connector_status status;
850
851 status = tegra_output_connector_detect(connector, force);
852 if (status == connector_status_connected)
853 return status;
854
855 tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_SOR_AUDIO_HDA_PRESENSE);
856 return status;
857 }
858
859 #define DEBUGFS_REG32(_name) { .name = #_name, .offset = _name }
860
861 static const struct debugfs_reg32 tegra_hdmi_regs[] = {
862 DEBUGFS_REG32(HDMI_CTXSW),
863 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_STATE0),
864 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_STATE1),
865 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_STATE2),
866 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_AN_MSB),
867 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_AN_LSB),
868 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CN_MSB),
869 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CN_LSB),
870 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_AKSV_MSB),
871 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_AKSV_LSB),
872 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_BKSV_MSB),
873 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_BKSV_LSB),
874 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CKSV_MSB),
875 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CKSV_LSB),
876 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_DKSV_MSB),
877 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_DKSV_LSB),
878 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CTRL),
879 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CMODE),
880 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_MPRIME_MSB),
881 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_MPRIME_LSB),
882 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_SPRIME_MSB),
883 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_SPRIME_LSB2),
884 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_SPRIME_LSB1),
885 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_RI),
886 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CS_MSB),
887 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CS_LSB),
888 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_EMU0),
889 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_EMU_RDATA0),
890 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_EMU1),
891 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_EMU2),
892 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL),
893 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_STATUS),
894 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_HEADER),
895 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_SUBPACK0_LOW),
896 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_SUBPACK0_HIGH),
897 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL),
898 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_STATUS),
899 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_HEADER),
900 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK0_LOW),
901 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK0_HIGH),
902 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK1_LOW),
903 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK1_HIGH),
904 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_CTRL),
905 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_STATUS),
906 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_HEADER),
907 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK0_LOW),
908 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK0_HIGH),
909 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK1_LOW),
910 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK1_HIGH),
911 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK2_LOW),
912 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK2_HIGH),
913 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK3_LOW),
914 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK3_HIGH),
915 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_CTRL),
916 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0320_SUBPACK_LOW),
917 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0320_SUBPACK_HIGH),
918 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_LOW),
919 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_HIGH),
920 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0882_SUBPACK_LOW),
921 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0882_SUBPACK_HIGH),
922 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_1764_SUBPACK_LOW),
923 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_1764_SUBPACK_HIGH),
924 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0480_SUBPACK_LOW),
925 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0480_SUBPACK_HIGH),
926 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0960_SUBPACK_LOW),
927 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0960_SUBPACK_HIGH),
928 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_1920_SUBPACK_LOW),
929 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_1920_SUBPACK_HIGH),
930 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_CTRL),
931 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_VSYNC_KEEPOUT),
932 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_VSYNC_WINDOW),
933 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GCP_CTRL),
934 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GCP_STATUS),
935 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GCP_SUBPACK),
936 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_CHANNEL_STATUS1),
937 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_CHANNEL_STATUS2),
938 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_EMU0),
939 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_EMU1),
940 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_EMU1_RDATA),
941 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_SPARE),
942 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_SPDIF_CHN_STATUS1),
943 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_SPDIF_CHN_STATUS2),
944 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_HDCPRIF_ROM_CTRL),
945 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_CAP),
946 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_PWR),
947 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_TEST),
948 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_PLL0),
949 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_PLL1),
950 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_PLL2),
951 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_CSTM),
952 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_LVDS),
953 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_CRCA),
954 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_CRCB),
955 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_BLANK),
956 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_CTL),
957 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(0)),
958 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(1)),
959 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(2)),
960 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(3)),
961 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(4)),
962 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(5)),
963 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(6)),
964 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(7)),
965 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(8)),
966 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(9)),
967 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(10)),
968 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(11)),
969 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(12)),
970 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(13)),
971 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(14)),
972 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(15)),
973 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_VCRCA0),
974 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_VCRCA1),
975 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_CCRCA0),
976 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_CCRCA1),
977 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_EDATAA0),
978 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_EDATAA1),
979 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_COUNTA0),
980 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_COUNTA1),
981 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_DEBUGA0),
982 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_DEBUGA1),
983 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_TRIG),
984 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_MSCHECK),
985 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT),
986 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_DEBUG0),
987 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_DEBUG1),
988 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_DEBUG2),
989 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_FS(0)),
990 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_FS(1)),
991 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_FS(2)),
992 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_FS(3)),
993 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_FS(4)),
994 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_FS(5)),
995 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_FS(6)),
996 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_PULSE_WIDTH),
997 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_THRESHOLD),
998 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_CNTRL0),
999 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_N),
1000 DEBUGFS_REG32(HDMI_NV_PDISP_HDCPRIF_ROM_TIMING),
1001 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_REFCLK),
1002 DEBUGFS_REG32(HDMI_NV_PDISP_CRC_CONTROL),
1003 DEBUGFS_REG32(HDMI_NV_PDISP_INPUT_CONTROL),
1004 DEBUGFS_REG32(HDMI_NV_PDISP_SCRATCH),
1005 DEBUGFS_REG32(HDMI_NV_PDISP_PE_CURRENT),
1006 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_CTRL),
1007 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_DEBUG0),
1008 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_DEBUG1),
1009 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_DEBUG2),
1010 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_HDCP_KEY_0),
1011 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_HDCP_KEY_1),
1012 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_HDCP_KEY_2),
1013 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_HDCP_KEY_3),
1014 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_HDCP_KEY_TRIG),
1015 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_SKEY_INDEX),
1016 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_AUDIO_CNTRL0),
1017 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_AUDIO_SPARE0),
1018 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_AUDIO_HDA_CODEC_SCRATCH0),
1019 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_AUDIO_HDA_CODEC_SCRATCH1),
1020 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_AUDIO_HDA_ELD_BUFWR),
1021 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_AUDIO_HDA_PRESENSE),
1022 DEBUGFS_REG32(HDMI_NV_PDISP_INT_STATUS),
1023 DEBUGFS_REG32(HDMI_NV_PDISP_INT_MASK),
1024 DEBUGFS_REG32(HDMI_NV_PDISP_INT_ENABLE),
1025 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_IO_PEAK_CURRENT),
1026 };
1027
1028 static int tegra_hdmi_show_regs(struct seq_file *s, void *data)
1029 {
1030 struct drm_info_node *node = s->private;
1031 struct tegra_hdmi *hdmi = node->info_ent->data;
1032 struct drm_crtc *crtc = hdmi->output.encoder.crtc;
1033 struct drm_device *drm = node->minor->dev;
1034 unsigned int i;
1035 int err = 0;
1036
1037 drm_modeset_lock_all(drm);
1038
1039 if (!crtc || !crtc->state->active) {
1040 err = -EBUSY;
1041 goto unlock;
1042 }
1043
1044 for (i = 0; i < ARRAY_SIZE(tegra_hdmi_regs); i++) {
1045 unsigned int offset = tegra_hdmi_regs[i].offset;
1046
1047 seq_printf(s, "%-56s %#05x %08x\n", tegra_hdmi_regs[i].name,
1048 offset, tegra_hdmi_readl(hdmi, offset));
1049 }
1050
1051 unlock:
1052 drm_modeset_unlock_all(drm);
1053 return err;
1054 }
1055
1056 static struct drm_info_list debugfs_files[] = {
1057 { "regs", tegra_hdmi_show_regs, 0, NULL },
1058 };
1059
1060 static int tegra_hdmi_late_register(struct drm_connector *connector)
1061 {
1062 struct tegra_output *output = connector_to_output(connector);
1063 unsigned int i, count = ARRAY_SIZE(debugfs_files);
1064 struct drm_minor *minor = connector->dev->primary;
1065 struct dentry *root = connector->debugfs_entry;
1066 struct tegra_hdmi *hdmi = to_hdmi(output);
1067
1068 hdmi->debugfs_files = kmemdup(debugfs_files, sizeof(debugfs_files),
1069 GFP_KERNEL);
1070 if (!hdmi->debugfs_files)
1071 return -ENOMEM;
1072
1073 for (i = 0; i < count; i++)
1074 hdmi->debugfs_files[i].data = hdmi;
1075
1076 drm_debugfs_create_files(hdmi->debugfs_files, count, root, minor);
1077
1078 return 0;
1079 }
1080
1081 static void tegra_hdmi_early_unregister(struct drm_connector *connector)
1082 {
1083 struct tegra_output *output = connector_to_output(connector);
1084 struct drm_minor *minor = connector->dev->primary;
1085 unsigned int count = ARRAY_SIZE(debugfs_files);
1086 struct tegra_hdmi *hdmi = to_hdmi(output);
1087
1088 drm_debugfs_remove_files(hdmi->debugfs_files, count, minor);
1089 kfree(hdmi->debugfs_files);
1090 hdmi->debugfs_files = NULL;
1091 }
1092
1093 static const struct drm_connector_funcs tegra_hdmi_connector_funcs = {
1094 .reset = drm_atomic_helper_connector_reset,
1095 .detect = tegra_hdmi_connector_detect,
1096 .fill_modes = drm_helper_probe_single_connector_modes,
1097 .destroy = tegra_output_connector_destroy,
1098 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1099 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1100 .late_register = tegra_hdmi_late_register,
1101 .early_unregister = tegra_hdmi_early_unregister,
1102 };
1103
1104 static enum drm_mode_status
1105 tegra_hdmi_connector_mode_valid(struct drm_connector *connector,
1106 struct drm_display_mode *mode)
1107 {
1108 struct tegra_output *output = connector_to_output(connector);
1109 struct tegra_hdmi *hdmi = to_hdmi(output);
1110 unsigned long pclk = mode->clock * 1000;
1111 enum drm_mode_status status = MODE_OK;
1112 struct clk *parent;
1113 long err;
1114
1115 parent = clk_get_parent(hdmi->clk_parent);
1116
1117 err = clk_round_rate(parent, pclk * 4);
1118 if (err <= 0)
1119 status = MODE_NOCLOCK;
1120
1121 return status;
1122 }
1123
1124 static const struct drm_connector_helper_funcs
1125 tegra_hdmi_connector_helper_funcs = {
1126 .get_modes = tegra_output_connector_get_modes,
1127 .mode_valid = tegra_hdmi_connector_mode_valid,
1128 };
1129
1130 static void tegra_hdmi_encoder_disable(struct drm_encoder *encoder)
1131 {
1132 struct tegra_output *output = encoder_to_output(encoder);
1133 struct tegra_dc *dc = to_tegra_dc(encoder->crtc);
1134 struct tegra_hdmi *hdmi = to_hdmi(output);
1135 u32 value;
1136 int err;
1137
1138 /*
1139 * The following accesses registers of the display controller, so make
1140 * sure it's only executed when the output is attached to one.
1141 */
1142 if (dc) {
1143 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS);
1144 value &= ~HDMI_ENABLE;
1145 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS);
1146
1147 tegra_dc_commit(dc);
1148 }
1149
1150 if (!hdmi->dvi) {
1151 if (hdmi->stereo)
1152 tegra_hdmi_disable_stereo_infoframe(hdmi);
1153
1154 tegra_hdmi_disable_audio_infoframe(hdmi);
1155 tegra_hdmi_disable_avi_infoframe(hdmi);
1156 tegra_hdmi_disable_audio(hdmi);
1157 }
1158
1159 tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_INT_ENABLE);
1160 tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_INT_MASK);
1161
1162 err = host1x_client_suspend(&hdmi->client);
1163 if (err < 0)
1164 dev_err(hdmi->dev, "failed to suspend: %d\n", err);
1165 }
1166
1167 static void tegra_hdmi_encoder_enable(struct drm_encoder *encoder)
1168 {
1169 struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
1170 unsigned int h_sync_width, h_front_porch, h_back_porch, i, rekey;
1171 struct tegra_output *output = encoder_to_output(encoder);
1172 struct tegra_dc *dc = to_tegra_dc(encoder->crtc);
1173 struct tegra_hdmi *hdmi = to_hdmi(output);
1174 unsigned int pulse_start, div82;
1175 int retries = 1000;
1176 u32 value;
1177 int err;
1178
1179 err = host1x_client_resume(&hdmi->client);
1180 if (err < 0) {
1181 dev_err(hdmi->dev, "failed to resume: %d\n", err);
1182 return;
1183 }
1184
1185 /*
1186 * Enable and unmask the HDA codec SCRATCH0 register interrupt. This
1187 * is used for interoperability between the HDA codec driver and the
1188 * HDMI driver.
1189 */
1190 tegra_hdmi_writel(hdmi, INT_CODEC_SCRATCH0, HDMI_NV_PDISP_INT_ENABLE);
1191 tegra_hdmi_writel(hdmi, INT_CODEC_SCRATCH0, HDMI_NV_PDISP_INT_MASK);
1192
1193 hdmi->pixel_clock = mode->clock * 1000;
1194 h_sync_width = mode->hsync_end - mode->hsync_start;
1195 h_back_porch = mode->htotal - mode->hsync_end;
1196 h_front_porch = mode->hsync_start - mode->hdisplay;
1197
1198 err = clk_set_rate(hdmi->clk, hdmi->pixel_clock);
1199 if (err < 0) {
1200 dev_err(hdmi->dev, "failed to set HDMI clock frequency: %d\n",
1201 err);
1202 }
1203
1204 DRM_DEBUG_KMS("HDMI clock rate: %lu Hz\n", clk_get_rate(hdmi->clk));
1205
1206 /* power up sequence */
1207 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_PLL0);
1208 value &= ~SOR_PLL_PDBG;
1209 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_PLL0);
1210
1211 usleep_range(10, 20);
1212
1213 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_PLL0);
1214 value &= ~SOR_PLL_PWR;
1215 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_PLL0);
1216
1217 tegra_dc_writel(dc, VSYNC_H_POSITION(1),
1218 DC_DISP_DISP_TIMING_OPTIONS);
1219 tegra_dc_writel(dc, DITHER_CONTROL_DISABLE | BASE_COLOR_SIZE_888,
1220 DC_DISP_DISP_COLOR_CONTROL);
1221
1222 /* video_preamble uses h_pulse2 */
1223 pulse_start = 1 + h_sync_width + h_back_porch - 10;
1224
1225 tegra_dc_writel(dc, H_PULSE2_ENABLE, DC_DISP_DISP_SIGNAL_OPTIONS0);
1226
1227 value = PULSE_MODE_NORMAL | PULSE_POLARITY_HIGH | PULSE_QUAL_VACTIVE |
1228 PULSE_LAST_END_A;
1229 tegra_dc_writel(dc, value, DC_DISP_H_PULSE2_CONTROL);
1230
1231 value = PULSE_START(pulse_start) | PULSE_END(pulse_start + 8);
1232 tegra_dc_writel(dc, value, DC_DISP_H_PULSE2_POSITION_A);
1233
1234 value = VSYNC_WINDOW_END(0x210) | VSYNC_WINDOW_START(0x200) |
1235 VSYNC_WINDOW_ENABLE;
1236 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_VSYNC_WINDOW);
1237
1238 if (dc->pipe)
1239 value = HDMI_SRC_DISPLAYB;
1240 else
1241 value = HDMI_SRC_DISPLAYA;
1242
1243 if ((mode->hdisplay == 720) && ((mode->vdisplay == 480) ||
1244 (mode->vdisplay == 576)))
1245 tegra_hdmi_writel(hdmi,
1246 value | ARM_VIDEO_RANGE_FULL,
1247 HDMI_NV_PDISP_INPUT_CONTROL);
1248 else
1249 tegra_hdmi_writel(hdmi,
1250 value | ARM_VIDEO_RANGE_LIMITED,
1251 HDMI_NV_PDISP_INPUT_CONTROL);
1252
1253 div82 = clk_get_rate(hdmi->clk) / 1000000 * 4;
1254 value = SOR_REFCLK_DIV_INT(div82 >> 2) | SOR_REFCLK_DIV_FRAC(div82);
1255 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_REFCLK);
1256
1257 hdmi->dvi = !tegra_output_is_hdmi(output);
1258 if (!hdmi->dvi) {
1259 /*
1260 * Make sure that the audio format has been configured before
1261 * enabling audio, otherwise we may try to divide by zero.
1262 */
1263 if (hdmi->format.sample_rate > 0) {
1264 err = tegra_hdmi_setup_audio(hdmi);
1265 if (err < 0)
1266 hdmi->dvi = true;
1267 }
1268 }
1269
1270 if (hdmi->config->has_hda)
1271 tegra_hdmi_write_eld(hdmi);
1272
1273 rekey = HDMI_REKEY_DEFAULT;
1274 value = HDMI_CTRL_REKEY(rekey);
1275 value |= HDMI_CTRL_MAX_AC_PACKET((h_sync_width + h_back_porch +
1276 h_front_porch - rekey - 18) / 32);
1277
1278 if (!hdmi->dvi)
1279 value |= HDMI_CTRL_ENABLE;
1280
1281 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_CTRL);
1282
1283 if (!hdmi->dvi) {
1284 tegra_hdmi_setup_avi_infoframe(hdmi, mode);
1285 tegra_hdmi_setup_audio_infoframe(hdmi);
1286
1287 if (hdmi->stereo)
1288 tegra_hdmi_setup_stereo_infoframe(hdmi);
1289 }
1290
1291 /* TMDS CONFIG */
1292 for (i = 0; i < hdmi->config->num_tmds; i++) {
1293 if (hdmi->pixel_clock <= hdmi->config->tmds[i].pclk) {
1294 tegra_hdmi_setup_tmds(hdmi, &hdmi->config->tmds[i]);
1295 break;
1296 }
1297 }
1298
1299 tegra_hdmi_writel(hdmi,
1300 SOR_SEQ_PU_PC(0) |
1301 SOR_SEQ_PU_PC_ALT(0) |
1302 SOR_SEQ_PD_PC(8) |
1303 SOR_SEQ_PD_PC_ALT(8),
1304 HDMI_NV_PDISP_SOR_SEQ_CTL);
1305
1306 value = SOR_SEQ_INST_WAIT_TIME(1) |
1307 SOR_SEQ_INST_WAIT_UNITS_VSYNC |
1308 SOR_SEQ_INST_HALT |
1309 SOR_SEQ_INST_PIN_A_LOW |
1310 SOR_SEQ_INST_PIN_B_LOW |
1311 SOR_SEQ_INST_DRIVE_PWM_OUT_LO;
1312
1313 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_SEQ_INST(0));
1314 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_SEQ_INST(8));
1315
1316 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_CSTM);
1317 value &= ~SOR_CSTM_ROTCLK(~0);
1318 value |= SOR_CSTM_ROTCLK(2);
1319 value |= SOR_CSTM_PLLDIV;
1320 value &= ~SOR_CSTM_LVDS_ENABLE;
1321 value &= ~SOR_CSTM_MODE_MASK;
1322 value |= SOR_CSTM_MODE_TMDS;
1323 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_CSTM);
1324
1325 /* start SOR */
1326 tegra_hdmi_writel(hdmi,
1327 SOR_PWR_NORMAL_STATE_PU |
1328 SOR_PWR_NORMAL_START_NORMAL |
1329 SOR_PWR_SAFE_STATE_PD |
1330 SOR_PWR_SETTING_NEW_TRIGGER,
1331 HDMI_NV_PDISP_SOR_PWR);
1332 tegra_hdmi_writel(hdmi,
1333 SOR_PWR_NORMAL_STATE_PU |
1334 SOR_PWR_NORMAL_START_NORMAL |
1335 SOR_PWR_SAFE_STATE_PD |
1336 SOR_PWR_SETTING_NEW_DONE,
1337 HDMI_NV_PDISP_SOR_PWR);
1338
1339 do {
1340 BUG_ON(--retries < 0);
1341 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_PWR);
1342 } while (value & SOR_PWR_SETTING_NEW_PENDING);
1343
1344 value = SOR_STATE_ASY_CRCMODE_COMPLETE |
1345 SOR_STATE_ASY_OWNER_HEAD0 |
1346 SOR_STATE_ASY_SUBOWNER_BOTH |
1347 SOR_STATE_ASY_PROTOCOL_SINGLE_TMDS_A |
1348 SOR_STATE_ASY_DEPOL_POS;
1349
1350 /* setup sync polarities */
1351 if (mode->flags & DRM_MODE_FLAG_PHSYNC)
1352 value |= SOR_STATE_ASY_HSYNCPOL_POS;
1353
1354 if (mode->flags & DRM_MODE_FLAG_NHSYNC)
1355 value |= SOR_STATE_ASY_HSYNCPOL_NEG;
1356
1357 if (mode->flags & DRM_MODE_FLAG_PVSYNC)
1358 value |= SOR_STATE_ASY_VSYNCPOL_POS;
1359
1360 if (mode->flags & DRM_MODE_FLAG_NVSYNC)
1361 value |= SOR_STATE_ASY_VSYNCPOL_NEG;
1362
1363 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_STATE2);
1364
1365 value = SOR_STATE_ASY_HEAD_OPMODE_AWAKE | SOR_STATE_ASY_ORMODE_NORMAL;
1366 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_STATE1);
1367
1368 tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_SOR_STATE0);
1369 tegra_hdmi_writel(hdmi, SOR_STATE_UPDATE, HDMI_NV_PDISP_SOR_STATE0);
1370 tegra_hdmi_writel(hdmi, value | SOR_STATE_ATTACHED,
1371 HDMI_NV_PDISP_SOR_STATE1);
1372 tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_SOR_STATE0);
1373
1374 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS);
1375 value |= HDMI_ENABLE;
1376 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS);
1377
1378 tegra_dc_commit(dc);
1379
1380 if (!hdmi->dvi) {
1381 tegra_hdmi_enable_avi_infoframe(hdmi);
1382 tegra_hdmi_enable_audio_infoframe(hdmi);
1383 tegra_hdmi_enable_audio(hdmi);
1384
1385 if (hdmi->stereo)
1386 tegra_hdmi_enable_stereo_infoframe(hdmi);
1387 }
1388
1389 /* TODO: add HDCP support */
1390 }
1391
1392 static int
1393 tegra_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
1394 struct drm_crtc_state *crtc_state,
1395 struct drm_connector_state *conn_state)
1396 {
1397 struct tegra_output *output = encoder_to_output(encoder);
1398 struct tegra_dc *dc = to_tegra_dc(conn_state->crtc);
1399 unsigned long pclk = crtc_state->mode.clock * 1000;
1400 struct tegra_hdmi *hdmi = to_hdmi(output);
1401 int err;
1402
1403 err = tegra_dc_state_setup_clock(dc, crtc_state, hdmi->clk_parent,
1404 pclk, 0);
1405 if (err < 0) {
1406 dev_err(output->dev, "failed to setup CRTC state: %d\n", err);
1407 return err;
1408 }
1409
1410 return err;
1411 }
1412
1413 static const struct drm_encoder_helper_funcs tegra_hdmi_encoder_helper_funcs = {
1414 .disable = tegra_hdmi_encoder_disable,
1415 .enable = tegra_hdmi_encoder_enable,
1416 .atomic_check = tegra_hdmi_encoder_atomic_check,
1417 };
1418
1419 static int tegra_hdmi_init(struct host1x_client *client)
1420 {
1421 struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
1422 struct drm_device *drm = dev_get_drvdata(client->host);
1423 int err;
1424
1425 hdmi->output.dev = client->dev;
1426
1427 drm_connector_init_with_ddc(drm, &hdmi->output.connector,
1428 &tegra_hdmi_connector_funcs,
1429 DRM_MODE_CONNECTOR_HDMIA,
1430 hdmi->output.ddc);
1431 drm_connector_helper_add(&hdmi->output.connector,
1432 &tegra_hdmi_connector_helper_funcs);
1433 hdmi->output.connector.dpms = DRM_MODE_DPMS_OFF;
1434
1435 drm_simple_encoder_init(drm, &hdmi->output.encoder,
1436 DRM_MODE_ENCODER_TMDS);
1437 drm_encoder_helper_add(&hdmi->output.encoder,
1438 &tegra_hdmi_encoder_helper_funcs);
1439
1440 drm_connector_attach_encoder(&hdmi->output.connector,
1441 &hdmi->output.encoder);
1442 drm_connector_register(&hdmi->output.connector);
1443
1444 err = tegra_output_init(drm, &hdmi->output);
1445 if (err < 0) {
1446 dev_err(client->dev, "failed to initialize output: %d\n", err);
1447 return err;
1448 }
1449
1450 hdmi->output.encoder.possible_crtcs = 0x3;
1451
1452 err = regulator_enable(hdmi->hdmi);
1453 if (err < 0) {
1454 dev_err(client->dev, "failed to enable HDMI regulator: %d\n",
1455 err);
1456 return err;
1457 }
1458
1459 err = regulator_enable(hdmi->pll);
1460 if (err < 0) {
1461 dev_err(hdmi->dev, "failed to enable PLL regulator: %d\n", err);
1462 return err;
1463 }
1464
1465 err = regulator_enable(hdmi->vdd);
1466 if (err < 0) {
1467 dev_err(hdmi->dev, "failed to enable VDD regulator: %d\n", err);
1468 return err;
1469 }
1470
1471 return 0;
1472 }
1473
1474 static int tegra_hdmi_exit(struct host1x_client *client)
1475 {
1476 struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
1477
1478 tegra_output_exit(&hdmi->output);
1479
1480 regulator_disable(hdmi->vdd);
1481 regulator_disable(hdmi->pll);
1482 regulator_disable(hdmi->hdmi);
1483
1484 return 0;
1485 }
1486
1487 static int tegra_hdmi_runtime_suspend(struct host1x_client *client)
1488 {
1489 struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
1490 struct device *dev = client->dev;
1491 int err;
1492
1493 err = reset_control_assert(hdmi->rst);
1494 if (err < 0) {
1495 dev_err(dev, "failed to assert reset: %d\n", err);
1496 return err;
1497 }
1498
1499 usleep_range(1000, 2000);
1500
1501 clk_disable_unprepare(hdmi->clk);
1502 pm_runtime_put_sync(dev);
1503
1504 return 0;
1505 }
1506
1507 static int tegra_hdmi_runtime_resume(struct host1x_client *client)
1508 {
1509 struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
1510 struct device *dev = client->dev;
1511 int err;
1512
1513 err = pm_runtime_get_sync(dev);
1514 if (err < 0) {
1515 dev_err(dev, "failed to get runtime PM: %d\n", err);
1516 return err;
1517 }
1518
1519 err = clk_prepare_enable(hdmi->clk);
1520 if (err < 0) {
1521 dev_err(dev, "failed to enable clock: %d\n", err);
1522 goto put_rpm;
1523 }
1524
1525 usleep_range(1000, 2000);
1526
1527 err = reset_control_deassert(hdmi->rst);
1528 if (err < 0) {
1529 dev_err(dev, "failed to deassert reset: %d\n", err);
1530 goto disable_clk;
1531 }
1532
1533 return 0;
1534
1535 disable_clk:
1536 clk_disable_unprepare(hdmi->clk);
1537 put_rpm:
1538 pm_runtime_put_sync(dev);
1539 return err;
1540 }
1541
1542 static const struct host1x_client_ops hdmi_client_ops = {
1543 .init = tegra_hdmi_init,
1544 .exit = tegra_hdmi_exit,
1545 .suspend = tegra_hdmi_runtime_suspend,
1546 .resume = tegra_hdmi_runtime_resume,
1547 };
1548
1549 static const struct tegra_hdmi_config tegra20_hdmi_config = {
1550 .tmds = tegra20_tmds_config,
1551 .num_tmds = ARRAY_SIZE(tegra20_tmds_config),
1552 .fuse_override_offset = HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT,
1553 .fuse_override_value = 1 << 31,
1554 .has_sor_io_peak_current = false,
1555 .has_hda = false,
1556 .has_hbr = false,
1557 };
1558
1559 static const struct tegra_hdmi_config tegra30_hdmi_config = {
1560 .tmds = tegra30_tmds_config,
1561 .num_tmds = ARRAY_SIZE(tegra30_tmds_config),
1562 .fuse_override_offset = HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT,
1563 .fuse_override_value = 1 << 31,
1564 .has_sor_io_peak_current = false,
1565 .has_hda = true,
1566 .has_hbr = false,
1567 };
1568
1569 static const struct tegra_hdmi_config tegra114_hdmi_config = {
1570 .tmds = tegra114_tmds_config,
1571 .num_tmds = ARRAY_SIZE(tegra114_tmds_config),
1572 .fuse_override_offset = HDMI_NV_PDISP_SOR_PAD_CTLS0,
1573 .fuse_override_value = 1 << 31,
1574 .has_sor_io_peak_current = true,
1575 .has_hda = true,
1576 .has_hbr = true,
1577 };
1578
1579 static const struct tegra_hdmi_config tegra124_hdmi_config = {
1580 .tmds = tegra124_tmds_config,
1581 .num_tmds = ARRAY_SIZE(tegra124_tmds_config),
1582 .fuse_override_offset = HDMI_NV_PDISP_SOR_PAD_CTLS0,
1583 .fuse_override_value = 1 << 31,
1584 .has_sor_io_peak_current = true,
1585 .has_hda = true,
1586 .has_hbr = true,
1587 };
1588
1589 static const struct of_device_id tegra_hdmi_of_match[] = {
1590 { .compatible = "nvidia,tegra124-hdmi", .data = &tegra124_hdmi_config },
1591 { .compatible = "nvidia,tegra114-hdmi", .data = &tegra114_hdmi_config },
1592 { .compatible = "nvidia,tegra30-hdmi", .data = &tegra30_hdmi_config },
1593 { .compatible = "nvidia,tegra20-hdmi", .data = &tegra20_hdmi_config },
1594 { },
1595 };
1596 MODULE_DEVICE_TABLE(of, tegra_hdmi_of_match);
1597
1598 static irqreturn_t tegra_hdmi_irq(int irq, void *data)
1599 {
1600 struct tegra_hdmi *hdmi = data;
1601 u32 value;
1602 int err;
1603
1604 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_INT_STATUS);
1605 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_INT_STATUS);
1606
1607 if (value & INT_CODEC_SCRATCH0) {
1608 unsigned int format;
1609 u32 value;
1610
1611 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_AUDIO_HDA_CODEC_SCRATCH0);
1612
1613 if (value & SOR_AUDIO_HDA_CODEC_SCRATCH0_VALID) {
1614 format = value & SOR_AUDIO_HDA_CODEC_SCRATCH0_FMT_MASK;
1615
1616 tegra_hda_parse_format(format, &hdmi->format);
1617
1618 err = tegra_hdmi_setup_audio(hdmi);
1619 if (err < 0) {
1620 tegra_hdmi_disable_audio_infoframe(hdmi);
1621 tegra_hdmi_disable_audio(hdmi);
1622 } else {
1623 tegra_hdmi_setup_audio_infoframe(hdmi);
1624 tegra_hdmi_enable_audio_infoframe(hdmi);
1625 tegra_hdmi_enable_audio(hdmi);
1626 }
1627 } else {
1628 tegra_hdmi_disable_audio_infoframe(hdmi);
1629 tegra_hdmi_disable_audio(hdmi);
1630 }
1631 }
1632
1633 return IRQ_HANDLED;
1634 }
1635
1636 static int tegra_hdmi_probe(struct platform_device *pdev)
1637 {
1638 const char *level = KERN_ERR;
1639 struct tegra_hdmi *hdmi;
1640 struct resource *regs;
1641 int err;
1642
1643 hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
1644 if (!hdmi)
1645 return -ENOMEM;
1646
1647 hdmi->config = of_device_get_match_data(&pdev->dev);
1648 hdmi->dev = &pdev->dev;
1649
1650 hdmi->audio_source = AUTO;
1651 hdmi->stereo = false;
1652 hdmi->dvi = false;
1653
1654 hdmi->clk = devm_clk_get(&pdev->dev, NULL);
1655 if (IS_ERR(hdmi->clk)) {
1656 dev_err(&pdev->dev, "failed to get clock\n");
1657 return PTR_ERR(hdmi->clk);
1658 }
1659
1660 hdmi->rst = devm_reset_control_get(&pdev->dev, "hdmi");
1661 if (IS_ERR(hdmi->rst)) {
1662 dev_err(&pdev->dev, "failed to get reset\n");
1663 return PTR_ERR(hdmi->rst);
1664 }
1665
1666 hdmi->clk_parent = devm_clk_get(&pdev->dev, "parent");
1667 if (IS_ERR(hdmi->clk_parent))
1668 return PTR_ERR(hdmi->clk_parent);
1669
1670 err = clk_set_parent(hdmi->clk, hdmi->clk_parent);
1671 if (err < 0) {
1672 dev_err(&pdev->dev, "failed to setup clocks: %d\n", err);
1673 return err;
1674 }
1675
1676 hdmi->hdmi = devm_regulator_get(&pdev->dev, "hdmi");
1677 err = PTR_ERR_OR_ZERO(hdmi->hdmi);
1678 if (err) {
1679 if (err == -EPROBE_DEFER)
1680 level = KERN_DEBUG;
1681
1682 dev_printk(level, &pdev->dev,
1683 "failed to get HDMI regulator: %d\n", err);
1684 return err;
1685 }
1686
1687 hdmi->pll = devm_regulator_get(&pdev->dev, "pll");
1688 err = PTR_ERR_OR_ZERO(hdmi->pll);
1689 if (err) {
1690 if (err == -EPROBE_DEFER)
1691 level = KERN_DEBUG;
1692
1693 dev_printk(level, &pdev->dev,
1694 "failed to get PLL regulator: %d\n", err);
1695 return err;
1696 }
1697
1698 hdmi->vdd = devm_regulator_get(&pdev->dev, "vdd");
1699 err = PTR_ERR_OR_ZERO(hdmi->vdd);
1700 if (err) {
1701 if (err == -EPROBE_DEFER)
1702 level = KERN_DEBUG;
1703
1704 dev_printk(level, &pdev->dev,
1705 "failed to get VDD regulator: %d\n", err);
1706 return err;
1707 }
1708
1709 hdmi->output.dev = &pdev->dev;
1710
1711 err = tegra_output_probe(&hdmi->output);
1712 if (err < 0)
1713 return err;
1714
1715 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1716 hdmi->regs = devm_ioremap_resource(&pdev->dev, regs);
1717 if (IS_ERR(hdmi->regs))
1718 return PTR_ERR(hdmi->regs);
1719
1720 err = platform_get_irq(pdev, 0);
1721 if (err < 0)
1722 return err;
1723
1724 hdmi->irq = err;
1725
1726 err = devm_request_irq(hdmi->dev, hdmi->irq, tegra_hdmi_irq, 0,
1727 dev_name(hdmi->dev), hdmi);
1728 if (err < 0) {
1729 dev_err(&pdev->dev, "failed to request IRQ#%u: %d\n",
1730 hdmi->irq, err);
1731 return err;
1732 }
1733
1734 platform_set_drvdata(pdev, hdmi);
1735 pm_runtime_enable(&pdev->dev);
1736
1737 INIT_LIST_HEAD(&hdmi->client.list);
1738 hdmi->client.ops = &hdmi_client_ops;
1739 hdmi->client.dev = &pdev->dev;
1740
1741 err = host1x_client_register(&hdmi->client);
1742 if (err < 0) {
1743 dev_err(&pdev->dev, "failed to register host1x client: %d\n",
1744 err);
1745 return err;
1746 }
1747
1748 return 0;
1749 }
1750
1751 static int tegra_hdmi_remove(struct platform_device *pdev)
1752 {
1753 struct tegra_hdmi *hdmi = platform_get_drvdata(pdev);
1754 int err;
1755
1756 pm_runtime_disable(&pdev->dev);
1757
1758 err = host1x_client_unregister(&hdmi->client);
1759 if (err < 0) {
1760 dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
1761 err);
1762 return err;
1763 }
1764
1765 tegra_output_remove(&hdmi->output);
1766
1767 return 0;
1768 }
1769
1770 struct platform_driver tegra_hdmi_driver = {
1771 .driver = {
1772 .name = "tegra-hdmi",
1773 .of_match_table = tegra_hdmi_of_match,
1774 },
1775 .probe = tegra_hdmi_probe,
1776 .remove = tegra_hdmi_remove,
1777 };
Linux with added FPC-III support