1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // MediaTek ALSA SoC Audio DAI TDM Control
4 //
5 // Copyright (c) 2020 MediaTek Inc.
6 // Author: Shane Chien <shane.chien@mediatek.com>
7 
8 #include <linux/regmap.h>
9 #include <sound/pcm_params.h>
10 
11 #include "mt8192-afe-clk.h"
12 #include "mt8192-afe-common.h"
13 #include "mt8192-afe-gpio.h"
14 #include "mt8192-interconnection.h"
15 
16 struct mtk_afe_tdm_priv {
17 	int id;
18 	int bck_id;
19 	int bck_rate;
20 	int tdm_out_mode;
21 	int bck_invert;
22 	int lck_invert;
23 	int mclk_id;
24 	int mclk_multiple; /* according to sample rate */
25 	int mclk_rate;
26 	int mclk_apll;
27 };
28 
29 enum {
30 	TDM_OUT_I2S = 0,
31 	TDM_OUT_DSP_A = 1,
32 	TDM_OUT_DSP_B = 2,
33 };
34 
35 enum {
36 	TDM_BCK_NON_INV = 0,
37 	TDM_BCK_INV = 1,
38 };
39 
40 enum {
41 	TDM_LCK_NON_INV = 0,
42 	TDM_LCK_INV = 1,
43 };
44 
45 enum {
46 	TDM_WLEN_16_BIT = 1,
47 	TDM_WLEN_32_BIT = 2,
48 };
49 
50 enum {
51 	TDM_CHANNEL_BCK_16 = 0,
52 	TDM_CHANNEL_BCK_24 = 1,
53 	TDM_CHANNEL_BCK_32 = 2,
54 };
55 
56 enum {
57 	TDM_CHANNEL_NUM_2 = 0,
58 	TDM_CHANNEL_NUM_4 = 1,
59 	TDM_CHANNEL_NUM_8 = 2,
60 };
61 
62 enum  {
63 	TDM_CH_START_O30_O31 = 0,
64 	TDM_CH_START_O32_O33,
65 	TDM_CH_START_O34_O35,
66 	TDM_CH_START_O36_O37,
67 	TDM_CH_ZERO,
68 };
69 
get_tdm_wlen(snd_pcm_format_t format)70 static unsigned int get_tdm_wlen(snd_pcm_format_t format)
71 {
72 	return snd_pcm_format_physical_width(format) <= 16 ?
73 	       TDM_WLEN_16_BIT : TDM_WLEN_32_BIT;
74 }
75 
get_tdm_channel_bck(snd_pcm_format_t format)76 static unsigned int get_tdm_channel_bck(snd_pcm_format_t format)
77 {
78 	return snd_pcm_format_physical_width(format) <= 16 ?
79 	       TDM_CHANNEL_BCK_16 : TDM_CHANNEL_BCK_32;
80 }
81 
get_tdm_lrck_width(snd_pcm_format_t format)82 static unsigned int get_tdm_lrck_width(snd_pcm_format_t format)
83 {
84 	return snd_pcm_format_physical_width(format) - 1;
85 }
86 
get_tdm_ch(unsigned int ch)87 static unsigned int get_tdm_ch(unsigned int ch)
88 {
89 	switch (ch) {
90 	case 1:
91 	case 2:
92 		return TDM_CHANNEL_NUM_2;
93 	case 3:
94 	case 4:
95 		return TDM_CHANNEL_NUM_4;
96 	case 5:
97 	case 6:
98 	case 7:
99 	case 8:
100 	default:
101 		return TDM_CHANNEL_NUM_8;
102 	}
103 }
104 
get_tdm_ch_fixup(unsigned int channels)105 static unsigned int get_tdm_ch_fixup(unsigned int channels)
106 {
107 	if (channels > 4)
108 		return 8;
109 	else if (channels > 2)
110 		return 4;
111 	else
112 		return 2;
113 }
114 
get_tdm_ch_per_sdata(unsigned int mode,unsigned int channels)115 static unsigned int get_tdm_ch_per_sdata(unsigned int mode,
116 					 unsigned int channels)
117 {
118 	if (mode == TDM_OUT_DSP_A || mode == TDM_OUT_DSP_B)
119 		return get_tdm_ch_fixup(channels);
120 	else
121 		return 2;
122 }
123 
124 /* interconnection */
125 enum {
126 	HDMI_CONN_CH0 = 0,
127 	HDMI_CONN_CH1,
128 	HDMI_CONN_CH2,
129 	HDMI_CONN_CH3,
130 	HDMI_CONN_CH4,
131 	HDMI_CONN_CH5,
132 	HDMI_CONN_CH6,
133 	HDMI_CONN_CH7,
134 };
135 
136 static const char *const hdmi_conn_mux_map[] = {
137 	"CH0", "CH1", "CH2", "CH3",
138 	"CH4", "CH5", "CH6", "CH7",
139 };
140 
141 static int hdmi_conn_mux_map_value[] = {
142 	HDMI_CONN_CH0,
143 	HDMI_CONN_CH1,
144 	HDMI_CONN_CH2,
145 	HDMI_CONN_CH3,
146 	HDMI_CONN_CH4,
147 	HDMI_CONN_CH5,
148 	HDMI_CONN_CH6,
149 	HDMI_CONN_CH7,
150 };
151 
152 static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch0_mux_map_enum,
153 				  AFE_HDMI_CONN0,
154 				  HDMI_O_0_SFT,
155 				  HDMI_O_0_MASK,
156 				  hdmi_conn_mux_map,
157 				  hdmi_conn_mux_map_value);
158 
159 static const struct snd_kcontrol_new hdmi_ch0_mux_control =
160 	SOC_DAPM_ENUM("HDMI_CH0_MUX", hdmi_ch0_mux_map_enum);
161 
162 static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch1_mux_map_enum,
163 				  AFE_HDMI_CONN0,
164 				  HDMI_O_1_SFT,
165 				  HDMI_O_1_MASK,
166 				  hdmi_conn_mux_map,
167 				  hdmi_conn_mux_map_value);
168 
169 static const struct snd_kcontrol_new hdmi_ch1_mux_control =
170 	SOC_DAPM_ENUM("HDMI_CH1_MUX", hdmi_ch1_mux_map_enum);
171 
172 static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch2_mux_map_enum,
173 				  AFE_HDMI_CONN0,
174 				  HDMI_O_2_SFT,
175 				  HDMI_O_2_MASK,
176 				  hdmi_conn_mux_map,
177 				  hdmi_conn_mux_map_value);
178 
179 static const struct snd_kcontrol_new hdmi_ch2_mux_control =
180 	SOC_DAPM_ENUM("HDMI_CH2_MUX", hdmi_ch2_mux_map_enum);
181 
182 static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch3_mux_map_enum,
183 				  AFE_HDMI_CONN0,
184 				  HDMI_O_3_SFT,
185 				  HDMI_O_3_MASK,
186 				  hdmi_conn_mux_map,
187 				  hdmi_conn_mux_map_value);
188 
189 static const struct snd_kcontrol_new hdmi_ch3_mux_control =
190 	SOC_DAPM_ENUM("HDMI_CH3_MUX", hdmi_ch3_mux_map_enum);
191 
192 static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch4_mux_map_enum,
193 				  AFE_HDMI_CONN0,
194 				  HDMI_O_4_SFT,
195 				  HDMI_O_4_MASK,
196 				  hdmi_conn_mux_map,
197 				  hdmi_conn_mux_map_value);
198 
199 static const struct snd_kcontrol_new hdmi_ch4_mux_control =
200 	SOC_DAPM_ENUM("HDMI_CH4_MUX", hdmi_ch4_mux_map_enum);
201 
202 static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch5_mux_map_enum,
203 				  AFE_HDMI_CONN0,
204 				  HDMI_O_5_SFT,
205 				  HDMI_O_5_MASK,
206 				  hdmi_conn_mux_map,
207 				  hdmi_conn_mux_map_value);
208 
209 static const struct snd_kcontrol_new hdmi_ch5_mux_control =
210 	SOC_DAPM_ENUM("HDMI_CH5_MUX", hdmi_ch5_mux_map_enum);
211 
212 static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch6_mux_map_enum,
213 				  AFE_HDMI_CONN0,
214 				  HDMI_O_6_SFT,
215 				  HDMI_O_6_MASK,
216 				  hdmi_conn_mux_map,
217 				  hdmi_conn_mux_map_value);
218 
219 static const struct snd_kcontrol_new hdmi_ch6_mux_control =
220 	SOC_DAPM_ENUM("HDMI_CH6_MUX", hdmi_ch6_mux_map_enum);
221 
222 static SOC_VALUE_ENUM_SINGLE_DECL(hdmi_ch7_mux_map_enum,
223 				  AFE_HDMI_CONN0,
224 				  HDMI_O_7_SFT,
225 				  HDMI_O_7_MASK,
226 				  hdmi_conn_mux_map,
227 				  hdmi_conn_mux_map_value);
228 
229 static const struct snd_kcontrol_new hdmi_ch7_mux_control =
230 	SOC_DAPM_ENUM("HDMI_CH7_MUX", hdmi_ch7_mux_map_enum);
231 
232 enum {
233 	SUPPLY_SEQ_APLL,
234 	SUPPLY_SEQ_TDM_MCK_EN,
235 	SUPPLY_SEQ_TDM_BCK_EN,
236 	SUPPLY_SEQ_TDM_EN,
237 };
238 
get_tdm_id_by_name(const char * name)239 static int get_tdm_id_by_name(const char *name)
240 {
241 	return MT8192_DAI_TDM;
242 }
243 
mtk_tdm_en_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)244 static int mtk_tdm_en_event(struct snd_soc_dapm_widget *w,
245 			    struct snd_kcontrol *kcontrol,
246 			    int event)
247 {
248 	struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
249 	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
250 	struct mt8192_afe_private *afe_priv = afe->platform_priv;
251 	int dai_id = get_tdm_id_by_name(w->name);
252 	struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id];
253 
254 	if (!tdm_priv) {
255 		dev_warn(afe->dev, "%s(), tdm_priv == NULL", __func__);
256 		return -EINVAL;
257 	}
258 
259 	dev_dbg(cmpnt->dev, "%s(), name %s, event 0x%x\n",
260 		__func__, w->name, event);
261 
262 	switch (event) {
263 	case SND_SOC_DAPM_PRE_PMU:
264 		mt8192_afe_gpio_request(afe->dev, true, tdm_priv->id, 0);
265 		break;
266 	case SND_SOC_DAPM_POST_PMD:
267 		mt8192_afe_gpio_request(afe->dev, false, tdm_priv->id, 0);
268 		break;
269 	default:
270 		break;
271 	}
272 
273 	return 0;
274 }
275 
mtk_tdm_bck_en_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)276 static int mtk_tdm_bck_en_event(struct snd_soc_dapm_widget *w,
277 				struct snd_kcontrol *kcontrol,
278 				int event)
279 {
280 	struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
281 	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
282 	struct mt8192_afe_private *afe_priv = afe->platform_priv;
283 	int dai_id = get_tdm_id_by_name(w->name);
284 	struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id];
285 
286 	if (!tdm_priv) {
287 		dev_warn(afe->dev, "%s(), tdm_priv == NULL", __func__);
288 		return -EINVAL;
289 	}
290 
291 	dev_dbg(cmpnt->dev, "%s(), name %s, event 0x%x, dai_id %d\n",
292 		__func__, w->name, event, dai_id);
293 
294 	switch (event) {
295 	case SND_SOC_DAPM_PRE_PMU:
296 		mt8192_mck_enable(afe, tdm_priv->bck_id, tdm_priv->bck_rate);
297 		break;
298 	case SND_SOC_DAPM_POST_PMD:
299 		mt8192_mck_disable(afe, tdm_priv->bck_id);
300 		break;
301 	default:
302 		break;
303 	}
304 
305 	return 0;
306 }
307 
mtk_tdm_mck_en_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)308 static int mtk_tdm_mck_en_event(struct snd_soc_dapm_widget *w,
309 				struct snd_kcontrol *kcontrol,
310 				int event)
311 {
312 	struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
313 	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
314 	struct mt8192_afe_private *afe_priv = afe->platform_priv;
315 	int dai_id = get_tdm_id_by_name(w->name);
316 	struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id];
317 
318 	if (!tdm_priv) {
319 		dev_warn(afe->dev, "%s(), tdm_priv == NULL", __func__);
320 		return -EINVAL;
321 	}
322 
323 	dev_dbg(cmpnt->dev, "%s(), name %s, event 0x%x, dai_id %d\n",
324 		__func__, w->name, event, dai_id);
325 
326 	switch (event) {
327 	case SND_SOC_DAPM_PRE_PMU:
328 		mt8192_mck_enable(afe, tdm_priv->mclk_id, tdm_priv->mclk_rate);
329 		break;
330 	case SND_SOC_DAPM_POST_PMD:
331 		tdm_priv->mclk_rate = 0;
332 		mt8192_mck_disable(afe, tdm_priv->mclk_id);
333 		break;
334 	default:
335 		break;
336 	}
337 
338 	return 0;
339 }
340 
341 static const struct snd_soc_dapm_widget mtk_dai_tdm_widgets[] = {
342 	SND_SOC_DAPM_MUX("HDMI_CH0_MUX", SND_SOC_NOPM, 0, 0,
343 			 &hdmi_ch0_mux_control),
344 	SND_SOC_DAPM_MUX("HDMI_CH1_MUX", SND_SOC_NOPM, 0, 0,
345 			 &hdmi_ch1_mux_control),
346 	SND_SOC_DAPM_MUX("HDMI_CH2_MUX", SND_SOC_NOPM, 0, 0,
347 			 &hdmi_ch2_mux_control),
348 	SND_SOC_DAPM_MUX("HDMI_CH3_MUX", SND_SOC_NOPM, 0, 0,
349 			 &hdmi_ch3_mux_control),
350 	SND_SOC_DAPM_MUX("HDMI_CH4_MUX", SND_SOC_NOPM, 0, 0,
351 			 &hdmi_ch4_mux_control),
352 	SND_SOC_DAPM_MUX("HDMI_CH5_MUX", SND_SOC_NOPM, 0, 0,
353 			 &hdmi_ch5_mux_control),
354 	SND_SOC_DAPM_MUX("HDMI_CH6_MUX", SND_SOC_NOPM, 0, 0,
355 			 &hdmi_ch6_mux_control),
356 	SND_SOC_DAPM_MUX("HDMI_CH7_MUX", SND_SOC_NOPM, 0, 0,
357 			 &hdmi_ch7_mux_control),
358 
359 	SND_SOC_DAPM_CLOCK_SUPPLY("aud_tdm_clk"),
360 
361 	SND_SOC_DAPM_SUPPLY_S("TDM_EN", SUPPLY_SEQ_TDM_EN,
362 			      AFE_TDM_CON1, TDM_EN_SFT, 0,
363 			      mtk_tdm_en_event,
364 			      SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
365 
366 	SND_SOC_DAPM_SUPPLY_S("TDM_BCK", SUPPLY_SEQ_TDM_BCK_EN,
367 			      SND_SOC_NOPM, 0, 0,
368 			      mtk_tdm_bck_en_event,
369 			      SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
370 
371 	SND_SOC_DAPM_SUPPLY_S("TDM_MCK", SUPPLY_SEQ_TDM_MCK_EN,
372 			      SND_SOC_NOPM, 0, 0,
373 			      mtk_tdm_mck_en_event,
374 			      SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
375 };
376 
mtk_afe_tdm_apll_connect(struct snd_soc_dapm_widget * source,struct snd_soc_dapm_widget * sink)377 static int mtk_afe_tdm_apll_connect(struct snd_soc_dapm_widget *source,
378 				    struct snd_soc_dapm_widget *sink)
379 {
380 	struct snd_soc_dapm_widget *w = sink;
381 	struct snd_soc_component *cmpnt = snd_soc_dapm_to_component(w->dapm);
382 	struct mtk_base_afe *afe = snd_soc_component_get_drvdata(cmpnt);
383 	struct mt8192_afe_private *afe_priv = afe->platform_priv;
384 	int dai_id = get_tdm_id_by_name(w->name);
385 	struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai_id];
386 	int cur_apll;
387 
388 	/* which apll */
389 	cur_apll = mt8192_get_apll_by_name(afe, source->name);
390 
391 	return (tdm_priv->mclk_apll == cur_apll) ? 1 : 0;
392 }
393 
394 static const struct snd_soc_dapm_route mtk_dai_tdm_routes[] = {
395 	{"HDMI_CH0_MUX", "CH0", "HDMI"},
396 	{"HDMI_CH0_MUX", "CH1", "HDMI"},
397 	{"HDMI_CH0_MUX", "CH2", "HDMI"},
398 	{"HDMI_CH0_MUX", "CH3", "HDMI"},
399 	{"HDMI_CH0_MUX", "CH4", "HDMI"},
400 	{"HDMI_CH0_MUX", "CH5", "HDMI"},
401 	{"HDMI_CH0_MUX", "CH6", "HDMI"},
402 	{"HDMI_CH0_MUX", "CH7", "HDMI"},
403 
404 	{"HDMI_CH1_MUX", "CH0", "HDMI"},
405 	{"HDMI_CH1_MUX", "CH1", "HDMI"},
406 	{"HDMI_CH1_MUX", "CH2", "HDMI"},
407 	{"HDMI_CH1_MUX", "CH3", "HDMI"},
408 	{"HDMI_CH1_MUX", "CH4", "HDMI"},
409 	{"HDMI_CH1_MUX", "CH5", "HDMI"},
410 	{"HDMI_CH1_MUX", "CH6", "HDMI"},
411 	{"HDMI_CH1_MUX", "CH7", "HDMI"},
412 
413 	{"HDMI_CH2_MUX", "CH0", "HDMI"},
414 	{"HDMI_CH2_MUX", "CH1", "HDMI"},
415 	{"HDMI_CH2_MUX", "CH2", "HDMI"},
416 	{"HDMI_CH2_MUX", "CH3", "HDMI"},
417 	{"HDMI_CH2_MUX", "CH4", "HDMI"},
418 	{"HDMI_CH2_MUX", "CH5", "HDMI"},
419 	{"HDMI_CH2_MUX", "CH6", "HDMI"},
420 	{"HDMI_CH2_MUX", "CH7", "HDMI"},
421 
422 	{"HDMI_CH3_MUX", "CH0", "HDMI"},
423 	{"HDMI_CH3_MUX", "CH1", "HDMI"},
424 	{"HDMI_CH3_MUX", "CH2", "HDMI"},
425 	{"HDMI_CH3_MUX", "CH3", "HDMI"},
426 	{"HDMI_CH3_MUX", "CH4", "HDMI"},
427 	{"HDMI_CH3_MUX", "CH5", "HDMI"},
428 	{"HDMI_CH3_MUX", "CH6", "HDMI"},
429 	{"HDMI_CH3_MUX", "CH7", "HDMI"},
430 
431 	{"HDMI_CH4_MUX", "CH0", "HDMI"},
432 	{"HDMI_CH4_MUX", "CH1", "HDMI"},
433 	{"HDMI_CH4_MUX", "CH2", "HDMI"},
434 	{"HDMI_CH4_MUX", "CH3", "HDMI"},
435 	{"HDMI_CH4_MUX", "CH4", "HDMI"},
436 	{"HDMI_CH4_MUX", "CH5", "HDMI"},
437 	{"HDMI_CH4_MUX", "CH6", "HDMI"},
438 	{"HDMI_CH4_MUX", "CH7", "HDMI"},
439 
440 	{"HDMI_CH5_MUX", "CH0", "HDMI"},
441 	{"HDMI_CH5_MUX", "CH1", "HDMI"},
442 	{"HDMI_CH5_MUX", "CH2", "HDMI"},
443 	{"HDMI_CH5_MUX", "CH3", "HDMI"},
444 	{"HDMI_CH5_MUX", "CH4", "HDMI"},
445 	{"HDMI_CH5_MUX", "CH5", "HDMI"},
446 	{"HDMI_CH5_MUX", "CH6", "HDMI"},
447 	{"HDMI_CH5_MUX", "CH7", "HDMI"},
448 
449 	{"HDMI_CH6_MUX", "CH0", "HDMI"},
450 	{"HDMI_CH6_MUX", "CH1", "HDMI"},
451 	{"HDMI_CH6_MUX", "CH2", "HDMI"},
452 	{"HDMI_CH6_MUX", "CH3", "HDMI"},
453 	{"HDMI_CH6_MUX", "CH4", "HDMI"},
454 	{"HDMI_CH6_MUX", "CH5", "HDMI"},
455 	{"HDMI_CH6_MUX", "CH6", "HDMI"},
456 	{"HDMI_CH6_MUX", "CH7", "HDMI"},
457 
458 	{"HDMI_CH7_MUX", "CH0", "HDMI"},
459 	{"HDMI_CH7_MUX", "CH1", "HDMI"},
460 	{"HDMI_CH7_MUX", "CH2", "HDMI"},
461 	{"HDMI_CH7_MUX", "CH3", "HDMI"},
462 	{"HDMI_CH7_MUX", "CH4", "HDMI"},
463 	{"HDMI_CH7_MUX", "CH5", "HDMI"},
464 	{"HDMI_CH7_MUX", "CH6", "HDMI"},
465 	{"HDMI_CH7_MUX", "CH7", "HDMI"},
466 
467 	{"TDM", NULL, "HDMI_CH0_MUX"},
468 	{"TDM", NULL, "HDMI_CH1_MUX"},
469 	{"TDM", NULL, "HDMI_CH2_MUX"},
470 	{"TDM", NULL, "HDMI_CH3_MUX"},
471 	{"TDM", NULL, "HDMI_CH4_MUX"},
472 	{"TDM", NULL, "HDMI_CH5_MUX"},
473 	{"TDM", NULL, "HDMI_CH6_MUX"},
474 	{"TDM", NULL, "HDMI_CH7_MUX"},
475 
476 	{"TDM", NULL, "aud_tdm_clk"},
477 	{"TDM", NULL, "TDM_BCK"},
478 	{"TDM", NULL, "TDM_EN"},
479 	{"TDM_BCK", NULL, "TDM_MCK"},
480 	{"TDM_MCK", NULL, APLL1_W_NAME, mtk_afe_tdm_apll_connect},
481 	{"TDM_MCK", NULL, APLL2_W_NAME, mtk_afe_tdm_apll_connect},
482 };
483 
484 /* dai ops */
mtk_dai_tdm_cal_mclk(struct mtk_base_afe * afe,struct mtk_afe_tdm_priv * tdm_priv,int freq)485 static int mtk_dai_tdm_cal_mclk(struct mtk_base_afe *afe,
486 				struct mtk_afe_tdm_priv *tdm_priv,
487 				int freq)
488 {
489 	int apll;
490 	int apll_rate;
491 
492 	apll = mt8192_get_apll_by_rate(afe, freq);
493 	apll_rate = mt8192_get_apll_rate(afe, apll);
494 
495 	if (!freq || freq > apll_rate) {
496 		dev_warn(afe->dev,
497 			 "%s(), freq(%d Hz) invalid\n", __func__, freq);
498 		return -EINVAL;
499 	}
500 
501 	if (apll_rate % freq != 0) {
502 		dev_warn(afe->dev,
503 			 "%s(), APLL cannot generate %d Hz", __func__, freq);
504 		return -EINVAL;
505 	}
506 
507 	tdm_priv->mclk_rate = freq;
508 	tdm_priv->mclk_apll = apll;
509 
510 	return 0;
511 }
512 
mtk_dai_tdm_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)513 static int mtk_dai_tdm_hw_params(struct snd_pcm_substream *substream,
514 				 struct snd_pcm_hw_params *params,
515 				 struct snd_soc_dai *dai)
516 {
517 	struct mtk_base_afe *afe = snd_soc_dai_get_drvdata(dai);
518 	struct mt8192_afe_private *afe_priv = afe->platform_priv;
519 	int tdm_id = dai->id;
520 	struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[tdm_id];
521 	unsigned int tdm_out_mode = tdm_priv->tdm_out_mode;
522 	unsigned int rate = params_rate(params);
523 	unsigned int channels = params_channels(params);
524 	unsigned int out_channels_per_sdata =
525 		get_tdm_ch_per_sdata(tdm_out_mode, channels);
526 	snd_pcm_format_t format = params_format(params);
527 	unsigned int tdm_con = 0;
528 
529 	/* calculate mclk_rate, if not set explicitly */
530 	if (!tdm_priv->mclk_rate) {
531 		tdm_priv->mclk_rate = rate * tdm_priv->mclk_multiple;
532 		mtk_dai_tdm_cal_mclk(afe,
533 				     tdm_priv,
534 				     tdm_priv->mclk_rate);
535 	}
536 
537 	/* calculate bck */
538 	tdm_priv->bck_rate = rate *
539 			     out_channels_per_sdata *
540 			     snd_pcm_format_physical_width(format);
541 
542 	if (tdm_priv->bck_rate > tdm_priv->mclk_rate)
543 		dev_warn(afe->dev, "%s(), bck_rate > mclk_rate rate", __func__);
544 
545 	if (tdm_priv->mclk_rate % tdm_priv->bck_rate != 0)
546 		dev_warn(afe->dev, "%s(), bck cannot generate", __func__);
547 
548 	dev_dbg(afe->dev, "%s(), id %d, rate %d, channels %d, format %d, mclk_rate %d, bck_rate %d\n",
549 		__func__,
550 		tdm_id, rate, channels, format,
551 		tdm_priv->mclk_rate, tdm_priv->bck_rate);
552 
553 	dev_dbg(afe->dev, "%s(), out_channels_per_sdata = %d\n",
554 		__func__, out_channels_per_sdata);
555 
556 	/* set tdm */
557 	if (tdm_priv->bck_invert)
558 		regmap_update_bits(afe->regmap, AUDIO_TOP_CON3,
559 				   BCK_INVERSE_MASK_SFT,
560 				   0x1 << BCK_INVERSE_SFT);
561 
562 	if (tdm_priv->lck_invert)
563 		tdm_con |= 1 << LRCK_INVERSE_SFT;
564 
565 	if (tdm_priv->tdm_out_mode == TDM_OUT_I2S) {
566 		tdm_con |= 1 << DELAY_DATA_SFT;
567 		tdm_con |= get_tdm_lrck_width(format) << LRCK_TDM_WIDTH_SFT;
568 	} else if (tdm_priv->tdm_out_mode == TDM_OUT_DSP_A) {
569 		tdm_con |= 1 << DELAY_DATA_SFT;
570 		tdm_con |= 0 << LRCK_TDM_WIDTH_SFT;
571 	} else if (tdm_priv->tdm_out_mode == TDM_OUT_DSP_B) {
572 		tdm_con |= 0 << DELAY_DATA_SFT;
573 		tdm_con |= 0 << LRCK_TDM_WIDTH_SFT;
574 	}
575 
576 	tdm_con |= 1 << LEFT_ALIGN_SFT;
577 	tdm_con |= get_tdm_wlen(format) << WLEN_SFT;
578 	tdm_con |= get_tdm_ch(out_channels_per_sdata) << CHANNEL_NUM_SFT;
579 	tdm_con |= get_tdm_channel_bck(format) << CHANNEL_BCK_CYCLES_SFT;
580 	regmap_write(afe->regmap, AFE_TDM_CON1, tdm_con);
581 
582 	if (out_channels_per_sdata == 2) {
583 		switch (channels) {
584 		case 1:
585 		case 2:
586 			tdm_con = TDM_CH_START_O30_O31 << ST_CH_PAIR_SOUT0_SFT;
587 			tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT1_SFT;
588 			tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT2_SFT;
589 			tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT3_SFT;
590 			break;
591 		case 3:
592 		case 4:
593 			tdm_con = TDM_CH_START_O30_O31 << ST_CH_PAIR_SOUT0_SFT;
594 			tdm_con |= TDM_CH_START_O32_O33 << ST_CH_PAIR_SOUT1_SFT;
595 			tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT2_SFT;
596 			tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT3_SFT;
597 			break;
598 		case 5:
599 		case 6:
600 			tdm_con = TDM_CH_START_O30_O31 << ST_CH_PAIR_SOUT0_SFT;
601 			tdm_con |= TDM_CH_START_O32_O33 << ST_CH_PAIR_SOUT1_SFT;
602 			tdm_con |= TDM_CH_START_O34_O35 << ST_CH_PAIR_SOUT2_SFT;
603 			tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT3_SFT;
604 			break;
605 		case 7:
606 		case 8:
607 			tdm_con = TDM_CH_START_O30_O31 << ST_CH_PAIR_SOUT0_SFT;
608 			tdm_con |= TDM_CH_START_O32_O33 << ST_CH_PAIR_SOUT1_SFT;
609 			tdm_con |= TDM_CH_START_O34_O35 << ST_CH_PAIR_SOUT2_SFT;
610 			tdm_con |= TDM_CH_START_O36_O37 << ST_CH_PAIR_SOUT3_SFT;
611 			break;
612 		default:
613 			tdm_con = 0;
614 		}
615 	} else {
616 		tdm_con = TDM_CH_START_O30_O31 << ST_CH_PAIR_SOUT0_SFT;
617 		tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT1_SFT;
618 		tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT2_SFT;
619 		tdm_con |= TDM_CH_ZERO << ST_CH_PAIR_SOUT3_SFT;
620 	}
621 
622 	regmap_write(afe->regmap, AFE_TDM_CON2, tdm_con);
623 
624 	regmap_update_bits(afe->regmap, AFE_HDMI_OUT_CON0,
625 			   HDMI_CH_NUM_MASK_SFT,
626 			   channels << HDMI_CH_NUM_SFT);
627 	return 0;
628 }
629 
mtk_dai_tdm_set_sysclk(struct snd_soc_dai * dai,int clk_id,unsigned int freq,int dir)630 static int mtk_dai_tdm_set_sysclk(struct snd_soc_dai *dai,
631 				  int clk_id, unsigned int freq, int dir)
632 {
633 	struct mtk_base_afe *afe = dev_get_drvdata(dai->dev);
634 	struct mt8192_afe_private *afe_priv = afe->platform_priv;
635 	struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai->id];
636 
637 	if (!tdm_priv) {
638 		dev_warn(afe->dev, "%s(), tdm_priv == NULL", __func__);
639 		return -EINVAL;
640 	}
641 
642 	if (dir != SND_SOC_CLOCK_OUT) {
643 		dev_warn(afe->dev, "%s(), dir != SND_SOC_CLOCK_OUT", __func__);
644 		return -EINVAL;
645 	}
646 
647 	dev_dbg(afe->dev, "%s(), freq %d\n", __func__, freq);
648 
649 	return mtk_dai_tdm_cal_mclk(afe, tdm_priv, freq);
650 }
651 
mtk_dai_tdm_set_fmt(struct snd_soc_dai * dai,unsigned int fmt)652 static int mtk_dai_tdm_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
653 {
654 	struct mtk_base_afe *afe = dev_get_drvdata(dai->dev);
655 	struct mt8192_afe_private *afe_priv = afe->platform_priv;
656 	struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[dai->id];
657 
658 	if (!tdm_priv) {
659 		dev_warn(afe->dev, "%s(), tdm_priv == NULL", __func__);
660 		return -EINVAL;
661 	}
662 
663 	/* DAI mode*/
664 	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
665 	case SND_SOC_DAIFMT_I2S:
666 		tdm_priv->tdm_out_mode = TDM_OUT_I2S;
667 		break;
668 	case SND_SOC_DAIFMT_DSP_A:
669 		tdm_priv->tdm_out_mode = TDM_OUT_DSP_A;
670 		break;
671 	case SND_SOC_DAIFMT_DSP_B:
672 		tdm_priv->tdm_out_mode = TDM_OUT_DSP_B;
673 		break;
674 	default:
675 		tdm_priv->tdm_out_mode = TDM_OUT_I2S;
676 	}
677 
678 	/* DAI clock inversion*/
679 	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
680 	case SND_SOC_DAIFMT_NB_NF:
681 		tdm_priv->bck_invert = TDM_BCK_NON_INV;
682 		tdm_priv->lck_invert = TDM_LCK_NON_INV;
683 		break;
684 	case SND_SOC_DAIFMT_NB_IF:
685 		tdm_priv->bck_invert = TDM_BCK_NON_INV;
686 		tdm_priv->lck_invert = TDM_LCK_INV;
687 		break;
688 	case SND_SOC_DAIFMT_IB_NF:
689 		tdm_priv->bck_invert = TDM_BCK_INV;
690 		tdm_priv->lck_invert = TDM_LCK_NON_INV;
691 		break;
692 	case SND_SOC_DAIFMT_IB_IF:
693 	default:
694 		tdm_priv->bck_invert = TDM_BCK_INV;
695 		tdm_priv->lck_invert = TDM_LCK_INV;
696 		break;
697 	}
698 
699 	return 0;
700 }
701 
702 static const struct snd_soc_dai_ops mtk_dai_tdm_ops = {
703 	.hw_params = mtk_dai_tdm_hw_params,
704 	.set_sysclk = mtk_dai_tdm_set_sysclk,
705 	.set_fmt = mtk_dai_tdm_set_fmt,
706 };
707 
708 /* dai driver */
709 #define MTK_TDM_RATES (SNDRV_PCM_RATE_8000_48000 |\
710 		       SNDRV_PCM_RATE_88200 |\
711 		       SNDRV_PCM_RATE_96000 |\
712 		       SNDRV_PCM_RATE_176400 |\
713 		       SNDRV_PCM_RATE_192000)
714 
715 #define MTK_TDM_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
716 			 SNDRV_PCM_FMTBIT_S24_LE |\
717 			 SNDRV_PCM_FMTBIT_S32_LE)
718 
719 static struct snd_soc_dai_driver mtk_dai_tdm_driver[] = {
720 	{
721 		.name = "TDM",
722 		.id = MT8192_DAI_TDM,
723 		.playback = {
724 			.stream_name = "TDM",
725 			.channels_min = 2,
726 			.channels_max = 8,
727 			.rates = MTK_TDM_RATES,
728 			.formats = MTK_TDM_FORMATS,
729 		},
730 		.ops = &mtk_dai_tdm_ops,
731 	},
732 };
733 
init_tdm_priv_data(struct mtk_base_afe * afe)734 static struct mtk_afe_tdm_priv *init_tdm_priv_data(struct mtk_base_afe *afe)
735 {
736 	struct mtk_afe_tdm_priv *tdm_priv;
737 
738 	tdm_priv = devm_kzalloc(afe->dev, sizeof(struct mtk_afe_tdm_priv),
739 				GFP_KERNEL);
740 	if (!tdm_priv)
741 		return NULL;
742 
743 	tdm_priv->mclk_multiple = 512;
744 	tdm_priv->bck_id = MT8192_I2S4_BCK;
745 	tdm_priv->mclk_id = MT8192_I2S4_MCK;
746 	tdm_priv->id = MT8192_DAI_TDM;
747 
748 	return tdm_priv;
749 }
750 
mt8192_dai_tdm_register(struct mtk_base_afe * afe)751 int mt8192_dai_tdm_register(struct mtk_base_afe *afe)
752 {
753 	struct mt8192_afe_private *afe_priv = afe->platform_priv;
754 	struct mtk_afe_tdm_priv *tdm_priv;
755 	struct mtk_base_afe_dai *dai;
756 
757 	dai = devm_kzalloc(afe->dev, sizeof(*dai), GFP_KERNEL);
758 	if (!dai)
759 		return -ENOMEM;
760 
761 	list_add(&dai->list, &afe->sub_dais);
762 
763 	dai->dai_drivers = mtk_dai_tdm_driver;
764 	dai->num_dai_drivers = ARRAY_SIZE(mtk_dai_tdm_driver);
765 
766 	dai->dapm_widgets = mtk_dai_tdm_widgets;
767 	dai->num_dapm_widgets = ARRAY_SIZE(mtk_dai_tdm_widgets);
768 	dai->dapm_routes = mtk_dai_tdm_routes;
769 	dai->num_dapm_routes = ARRAY_SIZE(mtk_dai_tdm_routes);
770 
771 	tdm_priv = init_tdm_priv_data(afe);
772 	if (!tdm_priv)
773 		return -ENOMEM;
774 
775 	afe_priv->dai_priv[MT8192_DAI_TDM] = tdm_priv;
776 
777 	return 0;
778 }
779