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Get rid of 'remove_new' relic from platform driver struct
[linux.git] / drivers / gpu / drm / tegra / hdmi.c
blobe705f8590c133a66285cbbce41461c98642ab746
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.h>
14 #include <linux/platform_device.h>
15 #include <linux/pm_opp.h>
16 #include <linux/pm_runtime.h>
17 #include <linux/regulator/consumer.h>
18 #include <linux/reset.h>
19
20 #include <soc/tegra/common.h>
21 #include <sound/hdmi-codec.h>
22
23 #include <drm/drm_bridge_connector.h>
24 #include <drm/drm_atomic_helper.h>
25 #include <drm/drm_crtc.h>
26 #include <drm/drm_debugfs.h>
27 #include <drm/drm_edid.h>
28 #include <drm/drm_eld.h>
29 #include <drm/drm_file.h>
30 #include <drm/drm_fourcc.h>
31 #include <drm/drm_probe_helper.h>
32 #include <drm/drm_simple_kms_helper.h>
33
34 #include "hda.h"
35 #include "hdmi.h"
36 #include "drm.h"
37 #include "dc.h"
38 #include "trace.h"
39
40 #define HDMI_ELD_BUFFER_SIZE 96
41
42 struct tmds_config {
43 unsigned int pclk;
44 u32 pll0;
45 u32 pll1;
46 u32 pe_current;
47 u32 drive_current;
48 u32 peak_current;
49 };
50
51 struct tegra_hdmi_config {
52 const struct tmds_config *tmds;
53 unsigned int num_tmds;
54
55 unsigned long fuse_override_offset;
56 u32 fuse_override_value;
57
58 bool has_sor_io_peak_current;
59 bool has_hda;
60 bool has_hbr;
61 };
62
63 struct tegra_hdmi {
64 struct host1x_client client;
65 struct tegra_output output;
66 struct device *dev;
67
68 struct regulator *hdmi;
69 struct regulator *pll;
70 struct regulator *vdd;
71
72 void __iomem *regs;
73 unsigned int irq;
74
75 struct clk *clk_parent;
76 struct clk *clk;
77 struct reset_control *rst;
78
79 const struct tegra_hdmi_config *config;
80
81 unsigned int audio_source;
82 struct tegra_hda_format format;
83
84 unsigned int pixel_clock;
85 bool stereo;
86 bool dvi;
87
88 struct drm_info_list *debugfs_files;
89
90 struct platform_device *audio_pdev;
91 struct mutex audio_lock;
92 };
93
94 static inline struct tegra_hdmi *
95 host1x_client_to_hdmi(struct host1x_client *client)
96 {
97 return container_of(client, struct tegra_hdmi, client);
98 }
99
100 static inline struct tegra_hdmi *to_hdmi(struct tegra_output *output)
101 {
102 return container_of(output, struct tegra_hdmi, output);
103 }
104
105 #define HDMI_AUDIOCLK_FREQ 216000000
106 #define HDMI_REKEY_DEFAULT 56
107
108 enum {
109 AUTO = 0,
110 SPDIF,
111 HDA,
112 };
113
114 static inline u32 tegra_hdmi_readl(struct tegra_hdmi *hdmi,
115 unsigned int offset)
116 {
117 u32 value = readl(hdmi->regs + (offset << 2));
118
119 trace_hdmi_readl(hdmi->dev, offset, value);
120
121 return value;
122 }
123
124 static inline void tegra_hdmi_writel(struct tegra_hdmi *hdmi, u32 value,
125 unsigned int offset)
126 {
127 trace_hdmi_writel(hdmi->dev, offset, value);
128 writel(value, hdmi->regs + (offset << 2));
129 }
130
131 struct tegra_hdmi_audio_config {
132 unsigned int n;
133 unsigned int cts;
134 unsigned int aval;
135 };
136
137 static const struct tmds_config tegra20_tmds_config[] = {
138 { /* slow pixel clock modes */
139 .pclk = 27000000,
140 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
141 SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(0) |
142 SOR_PLL_TX_REG_LOAD(3),
143 .pll1 = SOR_PLL_TMDS_TERM_ENABLE,
144 .pe_current = PE_CURRENT0(PE_CURRENT_0_0_mA) |
145 PE_CURRENT1(PE_CURRENT_0_0_mA) |
146 PE_CURRENT2(PE_CURRENT_0_0_mA) |
147 PE_CURRENT3(PE_CURRENT_0_0_mA),
148 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_7_125_mA) |
149 DRIVE_CURRENT_LANE1(DRIVE_CURRENT_7_125_mA) |
150 DRIVE_CURRENT_LANE2(DRIVE_CURRENT_7_125_mA) |
151 DRIVE_CURRENT_LANE3(DRIVE_CURRENT_7_125_mA),
152 },
153 { /* high pixel clock modes */
154 .pclk = UINT_MAX,
155 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
156 SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(1) |
157 SOR_PLL_TX_REG_LOAD(3),
158 .pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN,
159 .pe_current = PE_CURRENT0(PE_CURRENT_6_0_mA) |
160 PE_CURRENT1(PE_CURRENT_6_0_mA) |
161 PE_CURRENT2(PE_CURRENT_6_0_mA) |
162 PE_CURRENT3(PE_CURRENT_6_0_mA),
163 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_7_125_mA) |
164 DRIVE_CURRENT_LANE1(DRIVE_CURRENT_7_125_mA) |
165 DRIVE_CURRENT_LANE2(DRIVE_CURRENT_7_125_mA) |
166 DRIVE_CURRENT_LANE3(DRIVE_CURRENT_7_125_mA),
167 },
168 };
169
170 static const struct tmds_config tegra30_tmds_config[] = {
171 { /* 480p modes */
172 .pclk = 27000000,
173 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
174 SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(0) |
175 SOR_PLL_TX_REG_LOAD(0),
176 .pll1 = SOR_PLL_TMDS_TERM_ENABLE,
177 .pe_current = PE_CURRENT0(PE_CURRENT_0_0_mA) |
178 PE_CURRENT1(PE_CURRENT_0_0_mA) |
179 PE_CURRENT2(PE_CURRENT_0_0_mA) |
180 PE_CURRENT3(PE_CURRENT_0_0_mA),
181 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) |
182 DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) |
183 DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) |
184 DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA),
185 }, { /* 720p modes */
186 .pclk = 74250000,
187 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
188 SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(1) |
189 SOR_PLL_TX_REG_LOAD(0),
190 .pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN,
191 .pe_current = PE_CURRENT0(PE_CURRENT_5_0_mA) |
192 PE_CURRENT1(PE_CURRENT_5_0_mA) |
193 PE_CURRENT2(PE_CURRENT_5_0_mA) |
194 PE_CURRENT3(PE_CURRENT_5_0_mA),
195 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) |
196 DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) |
197 DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) |
198 DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA),
199 }, { /* 1080p modes */
200 .pclk = UINT_MAX,
201 .pll0 = SOR_PLL_BG_V17_S(3) | SOR_PLL_ICHPMP(1) |
202 SOR_PLL_RESISTORSEL | SOR_PLL_VCOCAP(3) |
203 SOR_PLL_TX_REG_LOAD(0),
204 .pll1 = SOR_PLL_TMDS_TERM_ENABLE | SOR_PLL_PE_EN,
205 .pe_current = PE_CURRENT0(PE_CURRENT_5_0_mA) |
206 PE_CURRENT1(PE_CURRENT_5_0_mA) |
207 PE_CURRENT2(PE_CURRENT_5_0_mA) |
208 PE_CURRENT3(PE_CURRENT_5_0_mA),
209 .drive_current = DRIVE_CURRENT_LANE0(DRIVE_CURRENT_5_250_mA) |
210 DRIVE_CURRENT_LANE1(DRIVE_CURRENT_5_250_mA) |
211 DRIVE_CURRENT_LANE2(DRIVE_CURRENT_5_250_mA) |
212 DRIVE_CURRENT_LANE3(DRIVE_CURRENT_5_250_mA),
213 },
214 };
215
216 static const struct tmds_config tegra114_tmds_config[] = {
217 { /* 480p/576p / 25.2MHz/27MHz modes */
218 .pclk = 27000000,
219 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
220 SOR_PLL_VCOCAP(0) | SOR_PLL_RESISTORSEL,
221 .pll1 = SOR_PLL_LOADADJ(3) | SOR_PLL_TMDS_TERMADJ(0),
222 .pe_current = PE_CURRENT0(PE_CURRENT_0_mA_T114) |
223 PE_CURRENT1(PE_CURRENT_0_mA_T114) |
224 PE_CURRENT2(PE_CURRENT_0_mA_T114) |
225 PE_CURRENT3(PE_CURRENT_0_mA_T114),
226 .drive_current =
227 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_10_400_mA_T114) |
228 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_10_400_mA_T114) |
229 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_10_400_mA_T114) |
230 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_10_400_mA_T114),
231 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
232 PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
233 PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
234 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
235 }, { /* 720p / 74.25MHz modes */
236 .pclk = 74250000,
237 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
238 SOR_PLL_VCOCAP(1) | SOR_PLL_RESISTORSEL,
239 .pll1 = SOR_PLL_PE_EN | SOR_PLL_LOADADJ(3) |
240 SOR_PLL_TMDS_TERMADJ(0),
241 .pe_current = PE_CURRENT0(PE_CURRENT_15_mA_T114) |
242 PE_CURRENT1(PE_CURRENT_15_mA_T114) |
243 PE_CURRENT2(PE_CURRENT_15_mA_T114) |
244 PE_CURRENT3(PE_CURRENT_15_mA_T114),
245 .drive_current =
246 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_10_400_mA_T114) |
247 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_10_400_mA_T114) |
248 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_10_400_mA_T114) |
249 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_10_400_mA_T114),
250 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
251 PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
252 PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
253 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
254 }, { /* 1080p / 148.5MHz modes */
255 .pclk = 148500000,
256 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
257 SOR_PLL_VCOCAP(3) | SOR_PLL_RESISTORSEL,
258 .pll1 = SOR_PLL_PE_EN | SOR_PLL_LOADADJ(3) |
259 SOR_PLL_TMDS_TERMADJ(0),
260 .pe_current = PE_CURRENT0(PE_CURRENT_10_mA_T114) |
261 PE_CURRENT1(PE_CURRENT_10_mA_T114) |
262 PE_CURRENT2(PE_CURRENT_10_mA_T114) |
263 PE_CURRENT3(PE_CURRENT_10_mA_T114),
264 .drive_current =
265 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_12_400_mA_T114) |
266 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_12_400_mA_T114) |
267 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_12_400_mA_T114) |
268 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_12_400_mA_T114),
269 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
270 PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
271 PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
272 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
273 }, { /* 225/297MHz modes */
274 .pclk = UINT_MAX,
275 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
276 SOR_PLL_VCOCAP(0xf) | SOR_PLL_RESISTORSEL,
277 .pll1 = SOR_PLL_LOADADJ(3) | SOR_PLL_TMDS_TERMADJ(7)
278 | SOR_PLL_TMDS_TERM_ENABLE,
279 .pe_current = PE_CURRENT0(PE_CURRENT_0_mA_T114) |
280 PE_CURRENT1(PE_CURRENT_0_mA_T114) |
281 PE_CURRENT2(PE_CURRENT_0_mA_T114) |
282 PE_CURRENT3(PE_CURRENT_0_mA_T114),
283 .drive_current =
284 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_25_200_mA_T114) |
285 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_25_200_mA_T114) |
286 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_25_200_mA_T114) |
287 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_19_200_mA_T114),
288 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_3_000_mA) |
289 PEAK_CURRENT_LANE1(PEAK_CURRENT_3_000_mA) |
290 PEAK_CURRENT_LANE2(PEAK_CURRENT_3_000_mA) |
291 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_800_mA),
292 },
293 };
294
295 static const struct tmds_config tegra124_tmds_config[] = {
296 { /* 480p/576p / 25.2MHz/27MHz modes */
297 .pclk = 27000000,
298 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
299 SOR_PLL_VCOCAP(0) | SOR_PLL_RESISTORSEL,
300 .pll1 = SOR_PLL_LOADADJ(3) | SOR_PLL_TMDS_TERMADJ(0),
301 .pe_current = PE_CURRENT0(PE_CURRENT_0_mA_T114) |
302 PE_CURRENT1(PE_CURRENT_0_mA_T114) |
303 PE_CURRENT2(PE_CURRENT_0_mA_T114) |
304 PE_CURRENT3(PE_CURRENT_0_mA_T114),
305 .drive_current =
306 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_10_400_mA_T114) |
307 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_10_400_mA_T114) |
308 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_10_400_mA_T114) |
309 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_10_400_mA_T114),
310 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
311 PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
312 PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
313 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
314 }, { /* 720p / 74.25MHz modes */
315 .pclk = 74250000,
316 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
317 SOR_PLL_VCOCAP(1) | SOR_PLL_RESISTORSEL,
318 .pll1 = SOR_PLL_PE_EN | SOR_PLL_LOADADJ(3) |
319 SOR_PLL_TMDS_TERMADJ(0),
320 .pe_current = PE_CURRENT0(PE_CURRENT_15_mA_T114) |
321 PE_CURRENT1(PE_CURRENT_15_mA_T114) |
322 PE_CURRENT2(PE_CURRENT_15_mA_T114) |
323 PE_CURRENT3(PE_CURRENT_15_mA_T114),
324 .drive_current =
325 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_10_400_mA_T114) |
326 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_10_400_mA_T114) |
327 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_10_400_mA_T114) |
328 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_10_400_mA_T114),
329 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
330 PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
331 PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
332 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
333 }, { /* 1080p / 148.5MHz modes */
334 .pclk = 148500000,
335 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
336 SOR_PLL_VCOCAP(3) | SOR_PLL_RESISTORSEL,
337 .pll1 = SOR_PLL_PE_EN | SOR_PLL_LOADADJ(3) |
338 SOR_PLL_TMDS_TERMADJ(0),
339 .pe_current = PE_CURRENT0(PE_CURRENT_10_mA_T114) |
340 PE_CURRENT1(PE_CURRENT_10_mA_T114) |
341 PE_CURRENT2(PE_CURRENT_10_mA_T114) |
342 PE_CURRENT3(PE_CURRENT_10_mA_T114),
343 .drive_current =
344 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_12_400_mA_T114) |
345 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_12_400_mA_T114) |
346 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_12_400_mA_T114) |
347 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_12_400_mA_T114),
348 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_0_000_mA) |
349 PEAK_CURRENT_LANE1(PEAK_CURRENT_0_000_mA) |
350 PEAK_CURRENT_LANE2(PEAK_CURRENT_0_000_mA) |
351 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_000_mA),
352 }, { /* 225/297MHz modes */
353 .pclk = UINT_MAX,
354 .pll0 = SOR_PLL_ICHPMP(1) | SOR_PLL_BG_V17_S(3) |
355 SOR_PLL_VCOCAP(0xf) | SOR_PLL_RESISTORSEL,
356 .pll1 = SOR_PLL_LOADADJ(3) | SOR_PLL_TMDS_TERMADJ(7)
357 | SOR_PLL_TMDS_TERM_ENABLE,
358 .pe_current = PE_CURRENT0(PE_CURRENT_0_mA_T114) |
359 PE_CURRENT1(PE_CURRENT_0_mA_T114) |
360 PE_CURRENT2(PE_CURRENT_0_mA_T114) |
361 PE_CURRENT3(PE_CURRENT_0_mA_T114),
362 .drive_current =
363 DRIVE_CURRENT_LANE0_T114(DRIVE_CURRENT_25_200_mA_T114) |
364 DRIVE_CURRENT_LANE1_T114(DRIVE_CURRENT_25_200_mA_T114) |
365 DRIVE_CURRENT_LANE2_T114(DRIVE_CURRENT_25_200_mA_T114) |
366 DRIVE_CURRENT_LANE3_T114(DRIVE_CURRENT_19_200_mA_T114),
367 .peak_current = PEAK_CURRENT_LANE0(PEAK_CURRENT_3_000_mA) |
368 PEAK_CURRENT_LANE1(PEAK_CURRENT_3_000_mA) |
369 PEAK_CURRENT_LANE2(PEAK_CURRENT_3_000_mA) |
370 PEAK_CURRENT_LANE3(PEAK_CURRENT_0_800_mA),
371 },
372 };
373
374 static void tegra_hdmi_audio_lock(struct tegra_hdmi *hdmi)
375 {
376 mutex_lock(&hdmi->audio_lock);
377 disable_irq(hdmi->irq);
378 }
379
380 static void tegra_hdmi_audio_unlock(struct tegra_hdmi *hdmi)
381 {
382 enable_irq(hdmi->irq);
383 mutex_unlock(&hdmi->audio_lock);
384 }
385
386 static int
387 tegra_hdmi_get_audio_config(unsigned int audio_freq, unsigned int pix_clock,
388 struct tegra_hdmi_audio_config *config)
389 {
390 const unsigned int afreq = 128 * audio_freq;
391 const unsigned int min_n = afreq / 1500;
392 const unsigned int max_n = afreq / 300;
393 const unsigned int ideal_n = afreq / 1000;
394 int64_t min_err = (uint64_t)-1 >> 1;
395 unsigned int min_delta = -1;
396 int n;
397
398 memset(config, 0, sizeof(*config));
399 config->n = -1;
400
401 for (n = min_n; n <= max_n; n++) {
402 uint64_t cts_f, aval_f;
403 unsigned int delta;
404 int64_t cts, err;
405
406 /* compute aval in 48.16 fixed point */
407 aval_f = ((int64_t)24000000 << 16) * n;
408 do_div(aval_f, afreq);
409 /* It should round without any rest */
410 if (aval_f & 0xFFFF)
411 continue;
412
413 /* Compute cts in 48.16 fixed point */
414 cts_f = ((int64_t)pix_clock << 16) * n;
415 do_div(cts_f, afreq);
416 /* Round it to the nearest integer */
417 cts = (cts_f & ~0xFFFF) + ((cts_f & BIT(15)) << 1);
418
419 delta = abs(n - ideal_n);
420
421 /* Compute the absolute error */
422 err = abs((int64_t)cts_f - cts);
423 if (err < min_err || (err == min_err && delta < min_delta)) {
424 config->n = n;
425 config->cts = cts >> 16;
426 config->aval = aval_f >> 16;
427 min_delta = delta;
428 min_err = err;
429 }
430 }
431
432 return config->n != -1 ? 0 : -EINVAL;
433 }
434
435 static void tegra_hdmi_setup_audio_fs_tables(struct tegra_hdmi *hdmi)
436 {
437 static const unsigned int freqs[] = {
438 32000, 44100, 48000, 88200, 96000, 176400, 192000
439 };
440 unsigned int i;
441
442 for (i = 0; i < ARRAY_SIZE(freqs); i++) {
443 unsigned int f = freqs[i];
444 unsigned int eight_half;
445 unsigned int delta;
446 u32 value;
447
448 if (f > 96000)
449 delta = 2;
450 else if (f > 48000)
451 delta = 6;
452 else
453 delta = 9;
454
455 eight_half = (8 * HDMI_AUDIOCLK_FREQ) / (f * 128);
456 value = AUDIO_FS_LOW(eight_half - delta) |
457 AUDIO_FS_HIGH(eight_half + delta);
458 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_FS(i));
459 }
460 }
461
462 static void tegra_hdmi_write_aval(struct tegra_hdmi *hdmi, u32 value)
463 {
464 static const struct {
465 unsigned int sample_rate;
466 unsigned int offset;
467 } regs[] = {
468 { 32000, HDMI_NV_PDISP_SOR_AUDIO_AVAL_0320 },
469 { 44100, HDMI_NV_PDISP_SOR_AUDIO_AVAL_0441 },
470 { 48000, HDMI_NV_PDISP_SOR_AUDIO_AVAL_0480 },
471 { 88200, HDMI_NV_PDISP_SOR_AUDIO_AVAL_0882 },
472 { 96000, HDMI_NV_PDISP_SOR_AUDIO_AVAL_0960 },
473 { 176400, HDMI_NV_PDISP_SOR_AUDIO_AVAL_1764 },
474 { 192000, HDMI_NV_PDISP_SOR_AUDIO_AVAL_1920 },
475 };
476 unsigned int i;
477
478 for (i = 0; i < ARRAY_SIZE(regs); i++) {
479 if (regs[i].sample_rate == hdmi->format.sample_rate) {
480 tegra_hdmi_writel(hdmi, value, regs[i].offset);
481 break;
482 }
483 }
484 }
485
486 static int tegra_hdmi_setup_audio(struct tegra_hdmi *hdmi)
487 {
488 struct tegra_hdmi_audio_config config;
489 u32 source, value;
490 int err;
491
492 switch (hdmi->audio_source) {
493 case HDA:
494 if (hdmi->config->has_hda)
495 source = SOR_AUDIO_CNTRL0_SOURCE_SELECT_HDAL;
496 else
497 return -EINVAL;
498
499 break;
500
501 case SPDIF:
502 if (hdmi->config->has_hda)
503 source = SOR_AUDIO_CNTRL0_SOURCE_SELECT_SPDIF;
504 else
505 source = AUDIO_CNTRL0_SOURCE_SELECT_SPDIF;
506 break;
507
508 default:
509 if (hdmi->config->has_hda)
510 source = SOR_AUDIO_CNTRL0_SOURCE_SELECT_AUTO;
511 else
512 source = AUDIO_CNTRL0_SOURCE_SELECT_AUTO;
513 break;
514 }
515
516 /*
517 * Tegra30 and later use a slightly modified version of the register
518 * layout to accomodate for changes related to supporting HDA as the
519 * audio input source for HDMI. The source select field has moved to
520 * the SOR_AUDIO_CNTRL0 register, but the error tolerance and frames
521 * per block fields remain in the AUDIO_CNTRL0 register.
522 */
523 if (hdmi->config->has_hda) {
524 /*
525 * Inject null samples into the audio FIFO for every frame in
526 * which the codec did not receive any samples. This applies
527 * to stereo LPCM only.
528 *
529 * XXX: This seems to be a remnant of MCP days when this was
530 * used to work around issues with monitors not being able to
531 * play back system startup sounds early. It is possibly not
532 * needed on Linux at all.
533 */
534 if (hdmi->format.channels == 2)
535 value = SOR_AUDIO_CNTRL0_INJECT_NULLSMPL;
536 else
537 value = 0;
538
539 value |= source;
540
541 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_AUDIO_CNTRL0);
542 }
543
544 /*
545 * On Tegra20, HDA is not a supported audio source and the source
546 * select field is part of the AUDIO_CNTRL0 register.
547 */
548 value = AUDIO_CNTRL0_FRAMES_PER_BLOCK(0xc0) |
549 AUDIO_CNTRL0_ERROR_TOLERANCE(6);
550
551 if (!hdmi->config->has_hda)
552 value |= source;
553
554 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_CNTRL0);
555
556 /*
557 * Advertise support for High Bit-Rate on Tegra114 and later.
558 */
559 if (hdmi->config->has_hbr) {
560 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_AUDIO_SPARE0);
561 value |= SOR_AUDIO_SPARE0_HBR_ENABLE;
562 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_AUDIO_SPARE0);
563 }
564
565 err = tegra_hdmi_get_audio_config(hdmi->format.sample_rate,
566 hdmi->pixel_clock, &config);
567 if (err < 0) {
568 dev_err(hdmi->dev,
569 "cannot set audio to %u Hz at %u Hz pixel clock\n",
570 hdmi->format.sample_rate, hdmi->pixel_clock);
571 return err;
572 }
573
574 dev_dbg(hdmi->dev, "audio: pixclk=%u, n=%u, cts=%u, aval=%u\n",
575 hdmi->pixel_clock, config.n, config.cts, config.aval);
576
577 tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_HDMI_ACR_CTRL);
578
579 value = AUDIO_N_RESETF | AUDIO_N_GENERATE_ALTERNATE |
580 AUDIO_N_VALUE(config.n - 1);
581 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_N);
582
583 tegra_hdmi_writel(hdmi, ACR_SUBPACK_N(config.n) | ACR_ENABLE,
584 HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_HIGH);
585
586 tegra_hdmi_writel(hdmi, ACR_SUBPACK_CTS(config.cts),
587 HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_LOW);
588
589 value = SPARE_HW_CTS | SPARE_FORCE_SW_CTS | SPARE_CTS_RESET_VAL(1);
590 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_SPARE);
591
592 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_AUDIO_N);
593 value &= ~AUDIO_N_RESETF;
594 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_AUDIO_N);
595
596 if (hdmi->config->has_hda)
597 tegra_hdmi_write_aval(hdmi, config.aval);
598
599 tegra_hdmi_setup_audio_fs_tables(hdmi);
600
601 return 0;
602 }
603
604 static void tegra_hdmi_disable_audio(struct tegra_hdmi *hdmi)
605 {
606 u32 value;
607
608 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
609 value &= ~GENERIC_CTRL_AUDIO;
610 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
611 }
612
613 static void tegra_hdmi_enable_audio(struct tegra_hdmi *hdmi)
614 {
615 u32 value;
616
617 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
618 value |= GENERIC_CTRL_AUDIO;
619 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
620 }
621
622 static void tegra_hdmi_write_eld(struct tegra_hdmi *hdmi)
623 {
624 size_t length = drm_eld_size(hdmi->output.connector.eld), i;
625 u32 value;
626
627 for (i = 0; i < length; i++)
628 tegra_hdmi_writel(hdmi, i << 8 | hdmi->output.connector.eld[i],
629 HDMI_NV_PDISP_SOR_AUDIO_HDA_ELD_BUFWR);
630
631 /*
632 * The HDA codec will always report an ELD buffer size of 96 bytes and
633 * the HDA codec driver will check that each byte read from the buffer
634 * is valid. Therefore every byte must be written, even if no 96 bytes
635 * were parsed from EDID.
636 */
637 for (i = length; i < HDMI_ELD_BUFFER_SIZE; i++)
638 tegra_hdmi_writel(hdmi, i << 8 | 0,
639 HDMI_NV_PDISP_SOR_AUDIO_HDA_ELD_BUFWR);
640
641 value = SOR_AUDIO_HDA_PRESENSE_VALID | SOR_AUDIO_HDA_PRESENSE_PRESENT;
642 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_AUDIO_HDA_PRESENSE);
643 }
644
645 static inline u32 tegra_hdmi_subpack(const u8 *ptr, size_t size)
646 {
647 u32 value = 0;
648 size_t i;
649
650 for (i = size; i > 0; i--)
651 value = (value << 8) | ptr[i - 1];
652
653 return value;
654 }
655
656 static void tegra_hdmi_write_infopack(struct tegra_hdmi *hdmi, const void *data,
657 size_t size)
658 {
659 const u8 *ptr = data;
660 unsigned long offset;
661 size_t i, j;
662 u32 value;
663
664 switch (ptr[0]) {
665 case HDMI_INFOFRAME_TYPE_AVI:
666 offset = HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_HEADER;
667 break;
668
669 case HDMI_INFOFRAME_TYPE_AUDIO:
670 offset = HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_HEADER;
671 break;
672
673 case HDMI_INFOFRAME_TYPE_VENDOR:
674 offset = HDMI_NV_PDISP_HDMI_GENERIC_HEADER;
675 break;
676
677 default:
678 dev_err(hdmi->dev, "unsupported infoframe type: %02x\n",
679 ptr[0]);
680 return;
681 }
682
683 value = INFOFRAME_HEADER_TYPE(ptr[0]) |
684 INFOFRAME_HEADER_VERSION(ptr[1]) |
685 INFOFRAME_HEADER_LEN(ptr[2]);
686 tegra_hdmi_writel(hdmi, value, offset);
687 offset++;
688
689 /*
690 * Each subpack contains 7 bytes, divided into:
691 * - subpack_low: bytes 0 - 3
692 * - subpack_high: bytes 4 - 6 (with byte 7 padded to 0x00)
693 */
694 for (i = 3, j = 0; i < size; i += 7, j += 8) {
695 size_t rem = size - i, num = min_t(size_t, rem, 4);
696
697 value = tegra_hdmi_subpack(&ptr[i], num);
698 tegra_hdmi_writel(hdmi, value, offset++);
699
700 num = min_t(size_t, rem - num, 3);
701
702 value = tegra_hdmi_subpack(&ptr[i + 4], num);
703 tegra_hdmi_writel(hdmi, value, offset++);
704 }
705 }
706
707 static void tegra_hdmi_setup_avi_infoframe(struct tegra_hdmi *hdmi,
708 struct drm_display_mode *mode)
709 {
710 struct hdmi_avi_infoframe frame;
711 u8 buffer[17];
712 ssize_t err;
713
714 err = drm_hdmi_avi_infoframe_from_display_mode(&frame,
715 &hdmi->output.connector, mode);
716 if (err < 0) {
717 dev_err(hdmi->dev, "failed to setup AVI infoframe: %zd\n", err);
718 return;
719 }
720
721 err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
722 if (err < 0) {
723 dev_err(hdmi->dev, "failed to pack AVI infoframe: %zd\n", err);
724 return;
725 }
726
727 tegra_hdmi_write_infopack(hdmi, buffer, err);
728 }
729
730 static void tegra_hdmi_disable_avi_infoframe(struct tegra_hdmi *hdmi)
731 {
732 u32 value;
733
734 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL);
735 value &= ~INFOFRAME_CTRL_ENABLE;
736 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL);
737 }
738
739 static void tegra_hdmi_enable_avi_infoframe(struct tegra_hdmi *hdmi)
740 {
741 u32 value;
742
743 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL);
744 value |= INFOFRAME_CTRL_ENABLE;
745 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL);
746 }
747
748 static void tegra_hdmi_setup_audio_infoframe(struct tegra_hdmi *hdmi)
749 {
750 struct hdmi_audio_infoframe frame;
751 u8 buffer[14];
752 ssize_t err;
753
754 err = hdmi_audio_infoframe_init(&frame);
755 if (err < 0) {
756 dev_err(hdmi->dev, "failed to setup audio infoframe: %zd\n",
757 err);
758 return;
759 }
760
761 frame.channels = hdmi->format.channels;
762
763 err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
764 if (err < 0) {
765 dev_err(hdmi->dev, "failed to pack audio infoframe: %zd\n",
766 err);
767 return;
768 }
769
770 /*
771 * The audio infoframe has only one set of subpack registers, so the
772 * infoframe needs to be truncated. One set of subpack registers can
773 * contain 7 bytes. Including the 3 byte header only the first 10
774 * bytes can be programmed.
775 */
776 tegra_hdmi_write_infopack(hdmi, buffer, min_t(size_t, 10, err));
777 }
778
779 static void tegra_hdmi_disable_audio_infoframe(struct tegra_hdmi *hdmi)
780 {
781 u32 value;
782
783 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL);
784 value &= ~INFOFRAME_CTRL_ENABLE;
785 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL);
786 }
787
788 static void tegra_hdmi_enable_audio_infoframe(struct tegra_hdmi *hdmi)
789 {
790 u32 value;
791
792 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL);
793 value |= INFOFRAME_CTRL_ENABLE;
794 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL);
795 }
796
797 static void tegra_hdmi_setup_stereo_infoframe(struct tegra_hdmi *hdmi)
798 {
799 struct hdmi_vendor_infoframe frame;
800 u8 buffer[10];
801 ssize_t err;
802
803 hdmi_vendor_infoframe_init(&frame);
804 frame.s3d_struct = HDMI_3D_STRUCTURE_FRAME_PACKING;
805
806 err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer));
807 if (err < 0) {
808 dev_err(hdmi->dev, "failed to pack vendor infoframe: %zd\n",
809 err);
810 return;
811 }
812
813 tegra_hdmi_write_infopack(hdmi, buffer, err);
814 }
815
816 static void tegra_hdmi_disable_stereo_infoframe(struct tegra_hdmi *hdmi)
817 {
818 u32 value;
819
820 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
821 value &= ~GENERIC_CTRL_ENABLE;
822 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
823 }
824
825 static void tegra_hdmi_enable_stereo_infoframe(struct tegra_hdmi *hdmi)
826 {
827 u32 value;
828
829 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
830 value |= GENERIC_CTRL_ENABLE;
831 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_GENERIC_CTRL);
832 }
833
834 static void tegra_hdmi_setup_tmds(struct tegra_hdmi *hdmi,
835 const struct tmds_config *tmds)
836 {
837 u32 value;
838
839 tegra_hdmi_writel(hdmi, tmds->pll0, HDMI_NV_PDISP_SOR_PLL0);
840 tegra_hdmi_writel(hdmi, tmds->pll1, HDMI_NV_PDISP_SOR_PLL1);
841 tegra_hdmi_writel(hdmi, tmds->pe_current, HDMI_NV_PDISP_PE_CURRENT);
842
843 tegra_hdmi_writel(hdmi, tmds->drive_current,
844 HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT);
845
846 value = tegra_hdmi_readl(hdmi, hdmi->config->fuse_override_offset);
847 value |= hdmi->config->fuse_override_value;
848 tegra_hdmi_writel(hdmi, value, hdmi->config->fuse_override_offset);
849
850 if (hdmi->config->has_sor_io_peak_current)
851 tegra_hdmi_writel(hdmi, tmds->peak_current,
852 HDMI_NV_PDISP_SOR_IO_PEAK_CURRENT);
853 }
854
855 static int tegra_hdmi_reconfigure_audio(struct tegra_hdmi *hdmi)
856 {
857 int err;
858
859 err = tegra_hdmi_setup_audio(hdmi);
860 if (err < 0) {
861 tegra_hdmi_disable_audio_infoframe(hdmi);
862 tegra_hdmi_disable_audio(hdmi);
863 } else {
864 tegra_hdmi_setup_audio_infoframe(hdmi);
865 tegra_hdmi_enable_audio_infoframe(hdmi);
866 tegra_hdmi_enable_audio(hdmi);
867 }
868
869 return err;
870 }
871
872 static bool tegra_output_is_hdmi(struct tegra_output *output)
873 {
874 return output->connector.display_info.is_hdmi;
875 }
876
877 static enum drm_connector_status
878 tegra_hdmi_connector_detect(struct drm_connector *connector, bool force)
879 {
880 struct tegra_output *output = connector_to_output(connector);
881 struct tegra_hdmi *hdmi = to_hdmi(output);
882 enum drm_connector_status status;
883
884 status = tegra_output_connector_detect(connector, force);
885 if (status == connector_status_connected)
886 return status;
887
888 tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_SOR_AUDIO_HDA_PRESENSE);
889 return status;
890 }
891
892 #define DEBUGFS_REG32(_name) { .name = #_name, .offset = _name }
893
894 static const struct debugfs_reg32 tegra_hdmi_regs[] = {
895 DEBUGFS_REG32(HDMI_CTXSW),
896 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_STATE0),
897 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_STATE1),
898 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_STATE2),
899 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_AN_MSB),
900 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_AN_LSB),
901 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CN_MSB),
902 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CN_LSB),
903 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_AKSV_MSB),
904 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_AKSV_LSB),
905 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_BKSV_MSB),
906 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_BKSV_LSB),
907 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CKSV_MSB),
908 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CKSV_LSB),
909 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_DKSV_MSB),
910 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_DKSV_LSB),
911 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CTRL),
912 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CMODE),
913 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_MPRIME_MSB),
914 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_MPRIME_LSB),
915 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_SPRIME_MSB),
916 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_SPRIME_LSB2),
917 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_SPRIME_LSB1),
918 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_RI),
919 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CS_MSB),
920 DEBUGFS_REG32(HDMI_NV_PDISP_RG_HDCP_CS_LSB),
921 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_EMU0),
922 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_EMU_RDATA0),
923 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_EMU1),
924 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_EMU2),
925 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_CTRL),
926 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_STATUS),
927 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_HEADER),
928 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_SUBPACK0_LOW),
929 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AUDIO_INFOFRAME_SUBPACK0_HIGH),
930 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_CTRL),
931 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_STATUS),
932 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_HEADER),
933 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK0_LOW),
934 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK0_HIGH),
935 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK1_LOW),
936 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_AVI_INFOFRAME_SUBPACK1_HIGH),
937 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_CTRL),
938 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_STATUS),
939 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_HEADER),
940 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK0_LOW),
941 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK0_HIGH),
942 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK1_LOW),
943 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK1_HIGH),
944 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK2_LOW),
945 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK2_HIGH),
946 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK3_LOW),
947 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GENERIC_SUBPACK3_HIGH),
948 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_CTRL),
949 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0320_SUBPACK_LOW),
950 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0320_SUBPACK_HIGH),
951 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_LOW),
952 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0441_SUBPACK_HIGH),
953 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0882_SUBPACK_LOW),
954 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0882_SUBPACK_HIGH),
955 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_1764_SUBPACK_LOW),
956 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_1764_SUBPACK_HIGH),
957 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0480_SUBPACK_LOW),
958 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0480_SUBPACK_HIGH),
959 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0960_SUBPACK_LOW),
960 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_0960_SUBPACK_HIGH),
961 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_1920_SUBPACK_LOW),
962 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_ACR_1920_SUBPACK_HIGH),
963 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_CTRL),
964 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_VSYNC_KEEPOUT),
965 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_VSYNC_WINDOW),
966 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GCP_CTRL),
967 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GCP_STATUS),
968 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_GCP_SUBPACK),
969 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_CHANNEL_STATUS1),
970 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_CHANNEL_STATUS2),
971 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_EMU0),
972 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_EMU1),
973 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_EMU1_RDATA),
974 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_SPARE),
975 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_SPDIF_CHN_STATUS1),
976 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_SPDIF_CHN_STATUS2),
977 DEBUGFS_REG32(HDMI_NV_PDISP_HDMI_HDCPRIF_ROM_CTRL),
978 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_CAP),
979 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_PWR),
980 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_TEST),
981 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_PLL0),
982 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_PLL1),
983 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_PLL2),
984 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_CSTM),
985 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_LVDS),
986 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_CRCA),
987 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_CRCB),
988 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_BLANK),
989 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_CTL),
990 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(0)),
991 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(1)),
992 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(2)),
993 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(3)),
994 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(4)),
995 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(5)),
996 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(6)),
997 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(7)),
998 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(8)),
999 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(9)),
1000 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(10)),
1001 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(11)),
1002 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(12)),
1003 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(13)),
1004 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(14)),
1005 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_SEQ_INST(15)),
1006 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_VCRCA0),
1007 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_VCRCA1),
1008 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_CCRCA0),
1009 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_CCRCA1),
1010 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_EDATAA0),
1011 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_EDATAA1),
1012 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_COUNTA0),
1013 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_COUNTA1),
1014 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_DEBUGA0),
1015 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_DEBUGA1),
1016 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_TRIG),
1017 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_MSCHECK),
1018 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT),
1019 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_DEBUG0),
1020 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_DEBUG1),
1021 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_DEBUG2),
1022 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_FS(0)),
1023 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_FS(1)),
1024 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_FS(2)),
1025 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_FS(3)),
1026 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_FS(4)),
1027 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_FS(5)),
1028 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_FS(6)),
1029 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_PULSE_WIDTH),
1030 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_THRESHOLD),
1031 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_CNTRL0),
1032 DEBUGFS_REG32(HDMI_NV_PDISP_AUDIO_N),
1033 DEBUGFS_REG32(HDMI_NV_PDISP_HDCPRIF_ROM_TIMING),
1034 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_REFCLK),
1035 DEBUGFS_REG32(HDMI_NV_PDISP_CRC_CONTROL),
1036 DEBUGFS_REG32(HDMI_NV_PDISP_INPUT_CONTROL),
1037 DEBUGFS_REG32(HDMI_NV_PDISP_SCRATCH),
1038 DEBUGFS_REG32(HDMI_NV_PDISP_PE_CURRENT),
1039 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_CTRL),
1040 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_DEBUG0),
1041 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_DEBUG1),
1042 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_DEBUG2),
1043 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_HDCP_KEY_0),
1044 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_HDCP_KEY_1),
1045 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_HDCP_KEY_2),
1046 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_HDCP_KEY_3),
1047 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_HDCP_KEY_TRIG),
1048 DEBUGFS_REG32(HDMI_NV_PDISP_KEY_SKEY_INDEX),
1049 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_AUDIO_CNTRL0),
1050 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_AUDIO_SPARE0),
1051 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_AUDIO_HDA_CODEC_SCRATCH0),
1052 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_AUDIO_HDA_CODEC_SCRATCH1),
1053 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_AUDIO_HDA_ELD_BUFWR),
1054 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_AUDIO_HDA_PRESENSE),
1055 DEBUGFS_REG32(HDMI_NV_PDISP_INT_STATUS),
1056 DEBUGFS_REG32(HDMI_NV_PDISP_INT_MASK),
1057 DEBUGFS_REG32(HDMI_NV_PDISP_INT_ENABLE),
1058 DEBUGFS_REG32(HDMI_NV_PDISP_SOR_IO_PEAK_CURRENT),
1059 };
1060
1061 static int tegra_hdmi_show_regs(struct seq_file *s, void *data)
1062 {
1063 struct drm_info_node *node = s->private;
1064 struct tegra_hdmi *hdmi = node->info_ent->data;
1065 struct drm_crtc *crtc = hdmi->output.encoder.crtc;
1066 struct drm_device *drm = node->minor->dev;
1067 unsigned int i;
1068 int err = 0;
1069
1070 drm_modeset_lock_all(drm);
1071
1072 if (!crtc || !crtc->state->active) {
1073 err = -EBUSY;
1074 goto unlock;
1075 }
1076
1077 for (i = 0; i < ARRAY_SIZE(tegra_hdmi_regs); i++) {
1078 unsigned int offset = tegra_hdmi_regs[i].offset;
1079
1080 seq_printf(s, "%-56s %#05x %08x\n", tegra_hdmi_regs[i].name,
1081 offset, tegra_hdmi_readl(hdmi, offset));
1082 }
1083
1084 unlock:
1085 drm_modeset_unlock_all(drm);
1086 return err;
1087 }
1088
1089 static struct drm_info_list debugfs_files[] = {
1090 { "regs", tegra_hdmi_show_regs, 0, NULL },
1091 };
1092
1093 static int tegra_hdmi_late_register(struct drm_connector *connector)
1094 {
1095 struct tegra_output *output = connector_to_output(connector);
1096 unsigned int i, count = ARRAY_SIZE(debugfs_files);
1097 struct drm_minor *minor = connector->dev->primary;
1098 struct dentry *root = connector->debugfs_entry;
1099 struct tegra_hdmi *hdmi = to_hdmi(output);
1100
1101 hdmi->debugfs_files = kmemdup(debugfs_files, sizeof(debugfs_files),
1102 GFP_KERNEL);
1103 if (!hdmi->debugfs_files)
1104 return -ENOMEM;
1105
1106 for (i = 0; i < count; i++)
1107 hdmi->debugfs_files[i].data = hdmi;
1108
1109 drm_debugfs_create_files(hdmi->debugfs_files, count, root, minor);
1110
1111 return 0;
1112 }
1113
1114 static void tegra_hdmi_early_unregister(struct drm_connector *connector)
1115 {
1116 struct tegra_output *output = connector_to_output(connector);
1117 struct drm_minor *minor = connector->dev->primary;
1118 unsigned int count = ARRAY_SIZE(debugfs_files);
1119 struct tegra_hdmi *hdmi = to_hdmi(output);
1120
1121 drm_debugfs_remove_files(hdmi->debugfs_files, count,
1122 connector->debugfs_entry, minor);
1123 kfree(hdmi->debugfs_files);
1124 hdmi->debugfs_files = NULL;
1125 }
1126
1127 static const struct drm_connector_funcs tegra_hdmi_connector_funcs = {
1128 .reset = drm_atomic_helper_connector_reset,
1129 .detect = tegra_hdmi_connector_detect,
1130 .fill_modes = drm_helper_probe_single_connector_modes,
1131 .destroy = tegra_output_connector_destroy,
1132 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1133 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1134 .late_register = tegra_hdmi_late_register,
1135 .early_unregister = tegra_hdmi_early_unregister,
1136 };
1137
1138 static enum drm_mode_status
1139 tegra_hdmi_connector_mode_valid(struct drm_connector *connector,
1140 struct drm_display_mode *mode)
1141 {
1142 struct tegra_output *output = connector_to_output(connector);
1143 struct tegra_hdmi *hdmi = to_hdmi(output);
1144 unsigned long pclk = mode->clock * 1000;
1145 enum drm_mode_status status = MODE_OK;
1146 struct clk *parent;
1147 long err;
1148
1149 parent = clk_get_parent(hdmi->clk_parent);
1150
1151 err = clk_round_rate(parent, pclk * 4);
1152 if (err <= 0)
1153 status = MODE_NOCLOCK;
1154
1155 return status;
1156 }
1157
1158 static const struct drm_connector_helper_funcs
1159 tegra_hdmi_connector_helper_funcs = {
1160 .get_modes = tegra_output_connector_get_modes,
1161 .mode_valid = tegra_hdmi_connector_mode_valid,
1162 };
1163
1164 static void tegra_hdmi_encoder_disable(struct drm_encoder *encoder)
1165 {
1166 struct tegra_output *output = encoder_to_output(encoder);
1167 struct tegra_dc *dc = to_tegra_dc(encoder->crtc);
1168 struct tegra_hdmi *hdmi = to_hdmi(output);
1169 u32 value;
1170 int err;
1171
1172 tegra_hdmi_audio_lock(hdmi);
1173
1174 /*
1175 * The following accesses registers of the display controller, so make
1176 * sure it's only executed when the output is attached to one.
1177 */
1178 if (dc) {
1179 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS);
1180 value &= ~HDMI_ENABLE;
1181 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS);
1182
1183 tegra_dc_commit(dc);
1184 }
1185
1186 if (!hdmi->dvi) {
1187 if (hdmi->stereo)
1188 tegra_hdmi_disable_stereo_infoframe(hdmi);
1189
1190 tegra_hdmi_disable_audio_infoframe(hdmi);
1191 tegra_hdmi_disable_avi_infoframe(hdmi);
1192 tegra_hdmi_disable_audio(hdmi);
1193 }
1194
1195 tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_INT_ENABLE);
1196 tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_INT_MASK);
1197
1198 hdmi->pixel_clock = 0;
1199
1200 tegra_hdmi_audio_unlock(hdmi);
1201
1202 err = host1x_client_suspend(&hdmi->client);
1203 if (err < 0)
1204 dev_err(hdmi->dev, "failed to suspend: %d\n", err);
1205 }
1206
1207 static void tegra_hdmi_encoder_enable(struct drm_encoder *encoder)
1208 {
1209 struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
1210 unsigned int h_sync_width, h_front_porch, h_back_porch, i, rekey;
1211 struct tegra_output *output = encoder_to_output(encoder);
1212 struct tegra_dc *dc = to_tegra_dc(encoder->crtc);
1213 struct tegra_hdmi *hdmi = to_hdmi(output);
1214 unsigned int pulse_start, div82;
1215 int retries = 1000;
1216 u32 value;
1217 int err;
1218
1219 err = host1x_client_resume(&hdmi->client);
1220 if (err < 0) {
1221 dev_err(hdmi->dev, "failed to resume: %d\n", err);
1222 return;
1223 }
1224
1225 tegra_hdmi_audio_lock(hdmi);
1226
1227 /*
1228 * Enable and unmask the HDA codec SCRATCH0 register interrupt. This
1229 * is used for interoperability between the HDA codec driver and the
1230 * HDMI driver.
1231 */
1232 tegra_hdmi_writel(hdmi, INT_CODEC_SCRATCH0, HDMI_NV_PDISP_INT_ENABLE);
1233 tegra_hdmi_writel(hdmi, INT_CODEC_SCRATCH0, HDMI_NV_PDISP_INT_MASK);
1234
1235 hdmi->pixel_clock = mode->clock * 1000;
1236 h_sync_width = mode->hsync_end - mode->hsync_start;
1237 h_back_porch = mode->htotal - mode->hsync_end;
1238 h_front_porch = mode->hsync_start - mode->hdisplay;
1239
1240 err = dev_pm_opp_set_rate(hdmi->dev, hdmi->pixel_clock);
1241 if (err < 0) {
1242 dev_err(hdmi->dev, "failed to set HDMI clock frequency: %d\n",
1243 err);
1244 }
1245
1246 DRM_DEBUG_KMS("HDMI clock rate: %lu Hz\n", clk_get_rate(hdmi->clk));
1247
1248 /* power up sequence */
1249 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_PLL0);
1250 value &= ~SOR_PLL_PDBG;
1251 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_PLL0);
1252
1253 usleep_range(10, 20);
1254
1255 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_PLL0);
1256 value &= ~SOR_PLL_PWR;
1257 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_PLL0);
1258
1259 tegra_dc_writel(dc, VSYNC_H_POSITION(1),
1260 DC_DISP_DISP_TIMING_OPTIONS);
1261 tegra_dc_writel(dc, DITHER_CONTROL_DISABLE | BASE_COLOR_SIZE_888,
1262 DC_DISP_DISP_COLOR_CONTROL);
1263
1264 /* video_preamble uses h_pulse2 */
1265 pulse_start = 1 + h_sync_width + h_back_porch - 10;
1266
1267 tegra_dc_writel(dc, H_PULSE2_ENABLE, DC_DISP_DISP_SIGNAL_OPTIONS0);
1268
1269 value = PULSE_MODE_NORMAL | PULSE_POLARITY_HIGH | PULSE_QUAL_VACTIVE |
1270 PULSE_LAST_END_A;
1271 tegra_dc_writel(dc, value, DC_DISP_H_PULSE2_CONTROL);
1272
1273 value = PULSE_START(pulse_start) | PULSE_END(pulse_start + 8);
1274 tegra_dc_writel(dc, value, DC_DISP_H_PULSE2_POSITION_A);
1275
1276 value = VSYNC_WINDOW_END(0x210) | VSYNC_WINDOW_START(0x200) |
1277 VSYNC_WINDOW_ENABLE;
1278 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_VSYNC_WINDOW);
1279
1280 if (dc->pipe)
1281 value = HDMI_SRC_DISPLAYB;
1282 else
1283 value = HDMI_SRC_DISPLAYA;
1284
1285 if ((mode->hdisplay == 720) && ((mode->vdisplay == 480) ||
1286 (mode->vdisplay == 576)))
1287 tegra_hdmi_writel(hdmi,
1288 value | ARM_VIDEO_RANGE_FULL,
1289 HDMI_NV_PDISP_INPUT_CONTROL);
1290 else
1291 tegra_hdmi_writel(hdmi,
1292 value | ARM_VIDEO_RANGE_LIMITED,
1293 HDMI_NV_PDISP_INPUT_CONTROL);
1294
1295 div82 = clk_get_rate(hdmi->clk) / 1000000 * 4;
1296 value = SOR_REFCLK_DIV_INT(div82 >> 2) | SOR_REFCLK_DIV_FRAC(div82);
1297 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_REFCLK);
1298
1299 hdmi->dvi = !tegra_output_is_hdmi(output);
1300 if (!hdmi->dvi) {
1301 /*
1302 * Make sure that the audio format has been configured before
1303 * enabling audio, otherwise we may try to divide by zero.
1304 */
1305 if (hdmi->format.sample_rate > 0) {
1306 err = tegra_hdmi_setup_audio(hdmi);
1307 if (err < 0)
1308 hdmi->dvi = true;
1309 }
1310 }
1311
1312 if (hdmi->config->has_hda)
1313 tegra_hdmi_write_eld(hdmi);
1314
1315 rekey = HDMI_REKEY_DEFAULT;
1316 value = HDMI_CTRL_REKEY(rekey);
1317 value |= HDMI_CTRL_MAX_AC_PACKET((h_sync_width + h_back_porch +
1318 h_front_porch - rekey - 18) / 32);
1319
1320 if (!hdmi->dvi)
1321 value |= HDMI_CTRL_ENABLE;
1322
1323 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_HDMI_CTRL);
1324
1325 if (!hdmi->dvi) {
1326 tegra_hdmi_setup_avi_infoframe(hdmi, mode);
1327 tegra_hdmi_setup_audio_infoframe(hdmi);
1328
1329 if (hdmi->stereo)
1330 tegra_hdmi_setup_stereo_infoframe(hdmi);
1331 }
1332
1333 /* TMDS CONFIG */
1334 for (i = 0; i < hdmi->config->num_tmds; i++) {
1335 if (hdmi->pixel_clock <= hdmi->config->tmds[i].pclk) {
1336 tegra_hdmi_setup_tmds(hdmi, &hdmi->config->tmds[i]);
1337 break;
1338 }
1339 }
1340
1341 tegra_hdmi_writel(hdmi,
1342 SOR_SEQ_PU_PC(0) |
1343 SOR_SEQ_PU_PC_ALT(0) |
1344 SOR_SEQ_PD_PC(8) |
1345 SOR_SEQ_PD_PC_ALT(8),
1346 HDMI_NV_PDISP_SOR_SEQ_CTL);
1347
1348 value = SOR_SEQ_INST_WAIT_TIME(1) |
1349 SOR_SEQ_INST_WAIT_UNITS_VSYNC |
1350 SOR_SEQ_INST_HALT |
1351 SOR_SEQ_INST_PIN_A_LOW |
1352 SOR_SEQ_INST_PIN_B_LOW |
1353 SOR_SEQ_INST_DRIVE_PWM_OUT_LO;
1354
1355 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_SEQ_INST(0));
1356 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_SEQ_INST(8));
1357
1358 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_CSTM);
1359 value &= ~SOR_CSTM_ROTCLK(~0);
1360 value |= SOR_CSTM_ROTCLK(2);
1361 value |= SOR_CSTM_PLLDIV;
1362 value &= ~SOR_CSTM_LVDS_ENABLE;
1363 value &= ~SOR_CSTM_MODE_MASK;
1364 value |= SOR_CSTM_MODE_TMDS;
1365 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_CSTM);
1366
1367 /* start SOR */
1368 tegra_hdmi_writel(hdmi,
1369 SOR_PWR_NORMAL_STATE_PU |
1370 SOR_PWR_NORMAL_START_NORMAL |
1371 SOR_PWR_SAFE_STATE_PD |
1372 SOR_PWR_SETTING_NEW_TRIGGER,
1373 HDMI_NV_PDISP_SOR_PWR);
1374 tegra_hdmi_writel(hdmi,
1375 SOR_PWR_NORMAL_STATE_PU |
1376 SOR_PWR_NORMAL_START_NORMAL |
1377 SOR_PWR_SAFE_STATE_PD |
1378 SOR_PWR_SETTING_NEW_DONE,
1379 HDMI_NV_PDISP_SOR_PWR);
1380
1381 do {
1382 BUG_ON(--retries < 0);
1383 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_PWR);
1384 } while (value & SOR_PWR_SETTING_NEW_PENDING);
1385
1386 value = SOR_STATE_ASY_CRCMODE_COMPLETE |
1387 SOR_STATE_ASY_OWNER_HEAD0 |
1388 SOR_STATE_ASY_SUBOWNER_BOTH |
1389 SOR_STATE_ASY_PROTOCOL_SINGLE_TMDS_A |
1390 SOR_STATE_ASY_DEPOL_POS;
1391
1392 /* setup sync polarities */
1393 if (mode->flags & DRM_MODE_FLAG_PHSYNC)
1394 value |= SOR_STATE_ASY_HSYNCPOL_POS;
1395
1396 if (mode->flags & DRM_MODE_FLAG_NHSYNC)
1397 value |= SOR_STATE_ASY_HSYNCPOL_NEG;
1398
1399 if (mode->flags & DRM_MODE_FLAG_PVSYNC)
1400 value |= SOR_STATE_ASY_VSYNCPOL_POS;
1401
1402 if (mode->flags & DRM_MODE_FLAG_NVSYNC)
1403 value |= SOR_STATE_ASY_VSYNCPOL_NEG;
1404
1405 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_STATE2);
1406
1407 value = SOR_STATE_ASY_HEAD_OPMODE_AWAKE | SOR_STATE_ASY_ORMODE_NORMAL;
1408 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_STATE1);
1409
1410 tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_SOR_STATE0);
1411 tegra_hdmi_writel(hdmi, SOR_STATE_UPDATE, HDMI_NV_PDISP_SOR_STATE0);
1412 tegra_hdmi_writel(hdmi, value | SOR_STATE_ATTACHED,
1413 HDMI_NV_PDISP_SOR_STATE1);
1414 tegra_hdmi_writel(hdmi, 0, HDMI_NV_PDISP_SOR_STATE0);
1415
1416 value = tegra_dc_readl(dc, DC_DISP_DISP_WIN_OPTIONS);
1417 value |= HDMI_ENABLE;
1418 tegra_dc_writel(dc, value, DC_DISP_DISP_WIN_OPTIONS);
1419
1420 tegra_dc_commit(dc);
1421
1422 if (!hdmi->dvi) {
1423 tegra_hdmi_enable_avi_infoframe(hdmi);
1424 tegra_hdmi_enable_audio_infoframe(hdmi);
1425 tegra_hdmi_enable_audio(hdmi);
1426
1427 if (hdmi->stereo)
1428 tegra_hdmi_enable_stereo_infoframe(hdmi);
1429 }
1430
1431 /* TODO: add HDCP support */
1432
1433 tegra_hdmi_audio_unlock(hdmi);
1434 }
1435
1436 static int
1437 tegra_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
1438 struct drm_crtc_state *crtc_state,
1439 struct drm_connector_state *conn_state)
1440 {
1441 struct tegra_output *output = encoder_to_output(encoder);
1442 struct tegra_dc *dc = to_tegra_dc(conn_state->crtc);
1443 unsigned long pclk = crtc_state->mode.clock * 1000;
1444 struct tegra_hdmi *hdmi = to_hdmi(output);
1445 int err;
1446
1447 err = tegra_dc_state_setup_clock(dc, crtc_state, hdmi->clk_parent,
1448 pclk, 0);
1449 if (err < 0) {
1450 dev_err(output->dev, "failed to setup CRTC state: %d\n", err);
1451 return err;
1452 }
1453
1454 return err;
1455 }
1456
1457 static const struct drm_encoder_helper_funcs tegra_hdmi_encoder_helper_funcs = {
1458 .disable = tegra_hdmi_encoder_disable,
1459 .enable = tegra_hdmi_encoder_enable,
1460 .atomic_check = tegra_hdmi_encoder_atomic_check,
1461 };
1462
1463 static int tegra_hdmi_hw_params(struct device *dev, void *data,
1464 struct hdmi_codec_daifmt *fmt,
1465 struct hdmi_codec_params *hparms)
1466 {
1467 struct tegra_hdmi *hdmi = data;
1468 int ret = 0;
1469
1470 tegra_hdmi_audio_lock(hdmi);
1471
1472 hdmi->format.sample_rate = hparms->sample_rate;
1473 hdmi->format.channels = hparms->channels;
1474
1475 if (hdmi->pixel_clock && !hdmi->dvi)
1476 ret = tegra_hdmi_reconfigure_audio(hdmi);
1477
1478 tegra_hdmi_audio_unlock(hdmi);
1479
1480 return ret;
1481 }
1482
1483 static int tegra_hdmi_audio_startup(struct device *dev, void *data)
1484 {
1485 struct tegra_hdmi *hdmi = data;
1486 int ret;
1487
1488 ret = host1x_client_resume(&hdmi->client);
1489 if (ret < 0)
1490 dev_err(hdmi->dev, "failed to resume: %d\n", ret);
1491
1492 return ret;
1493 }
1494
1495 static void tegra_hdmi_audio_shutdown(struct device *dev, void *data)
1496 {
1497 struct tegra_hdmi *hdmi = data;
1498 int ret;
1499
1500 tegra_hdmi_audio_lock(hdmi);
1501
1502 hdmi->format.sample_rate = 0;
1503 hdmi->format.channels = 0;
1504
1505 tegra_hdmi_audio_unlock(hdmi);
1506
1507 ret = host1x_client_suspend(&hdmi->client);
1508 if (ret < 0)
1509 dev_err(hdmi->dev, "failed to suspend: %d\n", ret);
1510 }
1511
1512 static const struct hdmi_codec_ops tegra_hdmi_codec_ops = {
1513 .hw_params = tegra_hdmi_hw_params,
1514 .audio_startup = tegra_hdmi_audio_startup,
1515 .audio_shutdown = tegra_hdmi_audio_shutdown,
1516 };
1517
1518 static int tegra_hdmi_codec_register(struct tegra_hdmi *hdmi)
1519 {
1520 struct hdmi_codec_pdata codec_data = {};
1521
1522 if (hdmi->config->has_hda)
1523 return 0;
1524
1525 codec_data.ops = &tegra_hdmi_codec_ops;
1526 codec_data.data = hdmi;
1527 codec_data.spdif = 1;
1528
1529 hdmi->audio_pdev = platform_device_register_data(hdmi->dev,
1530 HDMI_CODEC_DRV_NAME,
1531 PLATFORM_DEVID_AUTO,
1532 &codec_data,
1533 sizeof(codec_data));
1534 if (IS_ERR(hdmi->audio_pdev))
1535 return PTR_ERR(hdmi->audio_pdev);
1536
1537 hdmi->format.channels = 2;
1538
1539 return 0;
1540 }
1541
1542 static void tegra_hdmi_codec_unregister(struct tegra_hdmi *hdmi)
1543 {
1544 if (hdmi->audio_pdev)
1545 platform_device_unregister(hdmi->audio_pdev);
1546 }
1547
1548 static int tegra_hdmi_init(struct host1x_client *client)
1549 {
1550 struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
1551 struct drm_device *drm = dev_get_drvdata(client->host);
1552 struct drm_connector *connector;
1553 int err;
1554
1555 hdmi->output.dev = client->dev;
1556
1557 drm_simple_encoder_init(drm, &hdmi->output.encoder,
1558 DRM_MODE_ENCODER_TMDS);
1559 drm_encoder_helper_add(&hdmi->output.encoder,
1560 &tegra_hdmi_encoder_helper_funcs);
1561
1562 if (hdmi->output.bridge) {
1563 err = drm_bridge_attach(&hdmi->output.encoder, hdmi->output.bridge,
1564 NULL, DRM_BRIDGE_ATTACH_NO_CONNECTOR);
1565 if (err) {
1566 dev_err(client->dev, "failed to attach bridge: %d\n",
1567 err);
1568 return err;
1569 }
1570
1571 connector = drm_bridge_connector_init(drm, &hdmi->output.encoder);
1572 if (IS_ERR(connector)) {
1573 dev_err(client->dev,
1574 "failed to initialize bridge connector: %pe\n",
1575 connector);
1576 return PTR_ERR(connector);
1577 }
1578
1579 drm_connector_attach_encoder(connector, &hdmi->output.encoder);
1580 } else {
1581 drm_connector_init_with_ddc(drm, &hdmi->output.connector,
1582 &tegra_hdmi_connector_funcs,
1583 DRM_MODE_CONNECTOR_HDMIA,
1584 hdmi->output.ddc);
1585 drm_connector_helper_add(&hdmi->output.connector,
1586 &tegra_hdmi_connector_helper_funcs);
1587 hdmi->output.connector.dpms = DRM_MODE_DPMS_OFF;
1588
1589 drm_connector_attach_encoder(&hdmi->output.connector,
1590 &hdmi->output.encoder);
1591 drm_connector_register(&hdmi->output.connector);
1592 }
1593
1594 err = tegra_output_init(drm, &hdmi->output);
1595 if (err < 0) {
1596 dev_err(client->dev, "failed to initialize output: %d\n", err);
1597 return err;
1598 }
1599
1600 hdmi->output.encoder.possible_crtcs = 0x3;
1601
1602 err = regulator_enable(hdmi->hdmi);
1603 if (err < 0) {
1604 dev_err(client->dev, "failed to enable HDMI regulator: %d\n",
1605 err);
1606 goto output_exit;
1607 }
1608
1609 err = regulator_enable(hdmi->pll);
1610 if (err < 0) {
1611 dev_err(hdmi->dev, "failed to enable PLL regulator: %d\n", err);
1612 goto disable_hdmi;
1613 }
1614
1615 err = regulator_enable(hdmi->vdd);
1616 if (err < 0) {
1617 dev_err(hdmi->dev, "failed to enable VDD regulator: %d\n", err);
1618 goto disable_pll;
1619 }
1620
1621 err = tegra_hdmi_codec_register(hdmi);
1622 if (err < 0) {
1623 dev_err(hdmi->dev, "failed to register audio codec: %d\n", err);
1624 goto disable_vdd;
1625 }
1626
1627 return 0;
1628
1629 disable_vdd:
1630 regulator_disable(hdmi->vdd);
1631 disable_pll:
1632 regulator_disable(hdmi->pll);
1633 disable_hdmi:
1634 regulator_disable(hdmi->hdmi);
1635 output_exit:
1636 tegra_output_exit(&hdmi->output);
1637
1638 return err;
1639 }
1640
1641 static int tegra_hdmi_exit(struct host1x_client *client)
1642 {
1643 struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
1644
1645 tegra_hdmi_codec_unregister(hdmi);
1646
1647 tegra_output_exit(&hdmi->output);
1648
1649 regulator_disable(hdmi->vdd);
1650 regulator_disable(hdmi->pll);
1651 regulator_disable(hdmi->hdmi);
1652
1653 return 0;
1654 }
1655
1656 static int tegra_hdmi_runtime_suspend(struct host1x_client *client)
1657 {
1658 struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
1659 struct device *dev = client->dev;
1660 int err;
1661
1662 err = reset_control_assert(hdmi->rst);
1663 if (err < 0) {
1664 dev_err(dev, "failed to assert reset: %d\n", err);
1665 return err;
1666 }
1667
1668 usleep_range(1000, 2000);
1669
1670 clk_disable_unprepare(hdmi->clk);
1671 pm_runtime_put_sync(dev);
1672
1673 return 0;
1674 }
1675
1676 static int tegra_hdmi_runtime_resume(struct host1x_client *client)
1677 {
1678 struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
1679 struct device *dev = client->dev;
1680 int err;
1681
1682 err = pm_runtime_resume_and_get(dev);
1683 if (err < 0) {
1684 dev_err(dev, "failed to get runtime PM: %d\n", err);
1685 return err;
1686 }
1687
1688 err = clk_prepare_enable(hdmi->clk);
1689 if (err < 0) {
1690 dev_err(dev, "failed to enable clock: %d\n", err);
1691 goto put_rpm;
1692 }
1693
1694 usleep_range(1000, 2000);
1695
1696 err = reset_control_deassert(hdmi->rst);
1697 if (err < 0) {
1698 dev_err(dev, "failed to deassert reset: %d\n", err);
1699 goto disable_clk;
1700 }
1701
1702 return 0;
1703
1704 disable_clk:
1705 clk_disable_unprepare(hdmi->clk);
1706 put_rpm:
1707 pm_runtime_put_sync(dev);
1708 return err;
1709 }
1710
1711 static const struct host1x_client_ops hdmi_client_ops = {
1712 .init = tegra_hdmi_init,
1713 .exit = tegra_hdmi_exit,
1714 .suspend = tegra_hdmi_runtime_suspend,
1715 .resume = tegra_hdmi_runtime_resume,
1716 };
1717
1718 static const struct tegra_hdmi_config tegra20_hdmi_config = {
1719 .tmds = tegra20_tmds_config,
1720 .num_tmds = ARRAY_SIZE(tegra20_tmds_config),
1721 .fuse_override_offset = HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT,
1722 .fuse_override_value = 1 << 31,
1723 .has_sor_io_peak_current = false,
1724 .has_hda = false,
1725 .has_hbr = false,
1726 };
1727
1728 static const struct tegra_hdmi_config tegra30_hdmi_config = {
1729 .tmds = tegra30_tmds_config,
1730 .num_tmds = ARRAY_SIZE(tegra30_tmds_config),
1731 .fuse_override_offset = HDMI_NV_PDISP_SOR_LANE_DRIVE_CURRENT,
1732 .fuse_override_value = 1 << 31,
1733 .has_sor_io_peak_current = false,
1734 .has_hda = true,
1735 .has_hbr = false,
1736 };
1737
1738 static const struct tegra_hdmi_config tegra114_hdmi_config = {
1739 .tmds = tegra114_tmds_config,
1740 .num_tmds = ARRAY_SIZE(tegra114_tmds_config),
1741 .fuse_override_offset = HDMI_NV_PDISP_SOR_PAD_CTLS0,
1742 .fuse_override_value = 1 << 31,
1743 .has_sor_io_peak_current = true,
1744 .has_hda = true,
1745 .has_hbr = true,
1746 };
1747
1748 static const struct tegra_hdmi_config tegra124_hdmi_config = {
1749 .tmds = tegra124_tmds_config,
1750 .num_tmds = ARRAY_SIZE(tegra124_tmds_config),
1751 .fuse_override_offset = HDMI_NV_PDISP_SOR_PAD_CTLS0,
1752 .fuse_override_value = 1 << 31,
1753 .has_sor_io_peak_current = true,
1754 .has_hda = true,
1755 .has_hbr = true,
1756 };
1757
1758 static const struct of_device_id tegra_hdmi_of_match[] = {
1759 { .compatible = "nvidia,tegra124-hdmi", .data = &tegra124_hdmi_config },
1760 { .compatible = "nvidia,tegra114-hdmi", .data = &tegra114_hdmi_config },
1761 { .compatible = "nvidia,tegra30-hdmi", .data = &tegra30_hdmi_config },
1762 { .compatible = "nvidia,tegra20-hdmi", .data = &tegra20_hdmi_config },
1763 { },
1764 };
1765 MODULE_DEVICE_TABLE(of, tegra_hdmi_of_match);
1766
1767 static irqreturn_t tegra_hdmi_irq(int irq, void *data)
1768 {
1769 struct tegra_hdmi *hdmi = data;
1770 u32 value;
1771
1772 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_INT_STATUS);
1773 tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_INT_STATUS);
1774
1775 if (value & INT_CODEC_SCRATCH0) {
1776 unsigned int format;
1777 u32 value;
1778
1779 value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_AUDIO_HDA_CODEC_SCRATCH0);
1780
1781 if (value & SOR_AUDIO_HDA_CODEC_SCRATCH0_VALID) {
1782 format = value & SOR_AUDIO_HDA_CODEC_SCRATCH0_FMT_MASK;
1783
1784 tegra_hda_parse_format(format, &hdmi->format);
1785 tegra_hdmi_reconfigure_audio(hdmi);
1786 } else {
1787 tegra_hdmi_disable_audio_infoframe(hdmi);
1788 tegra_hdmi_disable_audio(hdmi);
1789 }
1790 }
1791
1792 return IRQ_HANDLED;
1793 }
1794
1795 static int tegra_hdmi_probe(struct platform_device *pdev)
1796 {
1797 struct tegra_hdmi *hdmi;
1798 int err;
1799
1800 hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL);
1801 if (!hdmi)
1802 return -ENOMEM;
1803
1804 hdmi->config = of_device_get_match_data(&pdev->dev);
1805 hdmi->dev = &pdev->dev;
1806
1807 hdmi->audio_source = AUTO;
1808 hdmi->stereo = false;
1809 hdmi->dvi = false;
1810
1811 mutex_init(&hdmi->audio_lock);
1812
1813 hdmi->clk = devm_clk_get(&pdev->dev, NULL);
1814 if (IS_ERR(hdmi->clk)) {
1815 dev_err(&pdev->dev, "failed to get clock\n");
1816 return PTR_ERR(hdmi->clk);
1817 }
1818
1819 hdmi->rst = devm_reset_control_get(&pdev->dev, "hdmi");
1820 if (IS_ERR(hdmi->rst)) {
1821 dev_err(&pdev->dev, "failed to get reset\n");
1822 return PTR_ERR(hdmi->rst);
1823 }
1824
1825 hdmi->clk_parent = devm_clk_get(&pdev->dev, "parent");
1826 if (IS_ERR(hdmi->clk_parent))
1827 return PTR_ERR(hdmi->clk_parent);
1828
1829 err = clk_set_parent(hdmi->clk, hdmi->clk_parent);
1830 if (err < 0) {
1831 dev_err(&pdev->dev, "failed to setup clocks: %d\n", err);
1832 return err;
1833 }
1834
1835 hdmi->hdmi = devm_regulator_get(&pdev->dev, "hdmi");
1836 err = PTR_ERR_OR_ZERO(hdmi->hdmi);
1837 if (err)
1838 return dev_err_probe(&pdev->dev, err,
1839 "failed to get HDMI regulator\n");
1840
1841 hdmi->pll = devm_regulator_get(&pdev->dev, "pll");
1842 err = PTR_ERR_OR_ZERO(hdmi->pll);
1843 if (err)
1844 return dev_err_probe(&pdev->dev, err,
1845 "failed to get PLL regulator\n");
1846
1847 hdmi->vdd = devm_regulator_get(&pdev->dev, "vdd");
1848 err = PTR_ERR_OR_ZERO(hdmi->vdd);
1849 if (err)
1850 return dev_err_probe(&pdev->dev, err,
1851 "failed to get VDD regulator\n");
1852
1853 hdmi->output.dev = &pdev->dev;
1854
1855 err = tegra_output_probe(&hdmi->output);
1856 if (err < 0)
1857 return err;
1858
1859 hdmi->regs = devm_platform_ioremap_resource(pdev, 0);
1860 if (IS_ERR(hdmi->regs)) {
1861 err = PTR_ERR(hdmi->regs);
1862 goto remove;
1863 }
1864
1865 err = platform_get_irq(pdev, 0);
1866 if (err < 0)
1867 goto remove;
1868
1869 hdmi->irq = err;
1870
1871 err = devm_request_irq(hdmi->dev, hdmi->irq, tegra_hdmi_irq, 0,
1872 dev_name(hdmi->dev), hdmi);
1873 if (err < 0) {
1874 dev_err(&pdev->dev, "failed to request IRQ#%u: %d\n",
1875 hdmi->irq, err);
1876 goto remove;
1877 }
1878
1879 platform_set_drvdata(pdev, hdmi);
1880
1881 err = devm_pm_runtime_enable(&pdev->dev);
1882 if (err)
1883 goto remove;
1884
1885 err = devm_tegra_core_dev_init_opp_table_common(&pdev->dev);
1886 if (err)
1887 goto remove;
1888
1889 INIT_LIST_HEAD(&hdmi->client.list);
1890 hdmi->client.ops = &hdmi_client_ops;
1891 hdmi->client.dev = &pdev->dev;
1892
1893 err = host1x_client_register(&hdmi->client);
1894 if (err < 0) {
1895 dev_err(&pdev->dev, "failed to register host1x client: %d\n",
1896 err);
1897 goto remove;
1898 }
1899
1900 return 0;
1901
1902 remove:
1903 tegra_output_remove(&hdmi->output);
1904 return err;
1905 }
1906
1907 static void tegra_hdmi_remove(struct platform_device *pdev)
1908 {
1909 struct tegra_hdmi *hdmi = platform_get_drvdata(pdev);
1910
1911 host1x_client_unregister(&hdmi->client);
1912
1913 tegra_output_remove(&hdmi->output);
1914 }
1915
1916 struct platform_driver tegra_hdmi_driver = {
1917 .driver = {
1918 .name = "tegra-hdmi",
1919 .of_match_table = tegra_hdmi_of_match,
1920 },
1921 .probe = tegra_hdmi_probe,
1922 .remove = tegra_hdmi_remove,
1923 };
Linux Kernel