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1// SPDX-License-Identifier: (GPL-2.0 OR MIT)
2//
3// Copyright (c) 2018 BayLibre, SAS.
4// Author: Jerome Brunet <jbrunet@baylibre.com>
5
6/*
7 * This driver implements the frontend playback DAI of AXG and G12A based SoCs
8 */
9
10#include <linux/clk.h>
11#include <linux/regmap.h>
12#include <linux/module.h>
13#include <linux/of_platform.h>
14#include <sound/pcm_params.h>
15#include <sound/soc.h>
16#include <sound/soc-dai.h>
17
18#include "axg-fifo.h"
19
20#define CTRL0_FRDDR_PP_MODE BIT(30)
21#define CTRL0_SEL1_EN_SHIFT 3
22#define CTRL0_SEL2_SHIFT 4
23#define CTRL0_SEL2_EN_SHIFT 7
24#define CTRL0_SEL3_SHIFT 8
25#define CTRL0_SEL3_EN_SHIFT 11
26#define CTRL1_FRDDR_FORCE_FINISH BIT(12)
27#define CTRL2_SEL1_SHIFT 0
28#define CTRL2_SEL1_EN_SHIFT 4
29#define CTRL2_SEL2_SHIFT 8
30#define CTRL2_SEL2_EN_SHIFT 12
31#define CTRL2_SEL3_SHIFT 16
32#define CTRL2_SEL3_EN_SHIFT 20
33
34static int g12a_frddr_dai_prepare(struct snd_pcm_substream *substream,
35 struct snd_soc_dai *dai)
36{
37 struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai);
38
39 /* Reset the read pointer to the FIFO_INIT_ADDR */
40 regmap_update_bits(fifo->map, FIFO_CTRL1,
41 CTRL1_FRDDR_FORCE_FINISH, 0);
42 regmap_update_bits(fifo->map, FIFO_CTRL1,
43 CTRL1_FRDDR_FORCE_FINISH, CTRL1_FRDDR_FORCE_FINISH);
44 regmap_update_bits(fifo->map, FIFO_CTRL1,
45 CTRL1_FRDDR_FORCE_FINISH, 0);
46
47 return 0;
48}
49
50static int axg_frddr_dai_hw_params(struct snd_pcm_substream *substream,
51 struct snd_pcm_hw_params *params,
52 struct snd_soc_dai *dai)
53{
54 struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai);
55 unsigned int period, depth, val;
56
57 period = params_period_bytes(params);
58
59 /* Trim the FIFO depth if the period is small to improve latency */
60 depth = min(period, fifo->depth);
61 val = (depth / AXG_FIFO_BURST) - 1;
62 regmap_update_bits(fifo->map, FIFO_CTRL1, CTRL1_FRDDR_DEPTH_MASK,
63 CTRL1_FRDDR_DEPTH(val));
64
65 return 0;
66}
67
68static int axg_frddr_dai_startup(struct snd_pcm_substream *substream,
69 struct snd_soc_dai *dai)
70{
71 struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai);
72 int ret;
73
74 /* Enable pclk to access registers and clock the fifo ip */
75 ret = clk_prepare_enable(fifo->pclk);
76 if (ret)
77 return ret;
78
79 /* Apply single buffer mode to the interface */
80 regmap_update_bits(fifo->map, FIFO_CTRL0, CTRL0_FRDDR_PP_MODE, 0);
81
82 return 0;
83}
84
85static void axg_frddr_dai_shutdown(struct snd_pcm_substream *substream,
86 struct snd_soc_dai *dai)
87{
88 struct axg_fifo *fifo = snd_soc_dai_get_drvdata(dai);
89
90 clk_disable_unprepare(fifo->pclk);
91}
92
93static int axg_frddr_pcm_new(struct snd_soc_pcm_runtime *rtd,
94 struct snd_soc_dai *dai)
95{
96 return axg_fifo_pcm_new(rtd, SNDRV_PCM_STREAM_PLAYBACK);
97}
98
99static const struct snd_soc_dai_ops axg_frddr_ops = {
100 .hw_params = axg_frddr_dai_hw_params,
101 .startup = axg_frddr_dai_startup,
102 .shutdown = axg_frddr_dai_shutdown,
103};
104
105static struct snd_soc_dai_driver axg_frddr_dai_drv = {
106 .name = "FRDDR",
107 .playback = {
108 .stream_name = "Playback",
109 .channels_min = 1,
110 .channels_max = AXG_FIFO_CH_MAX,
111 .rates = AXG_FIFO_RATES,
112 .formats = AXG_FIFO_FORMATS,
113 },
114 .ops = &axg_frddr_ops,
115 .pcm_new = axg_frddr_pcm_new,
116};
117
118static const char * const axg_frddr_sel_texts[] = {
119 "OUT 0", "OUT 1", "OUT 2", "OUT 3", "OUT 4", "OUT 5", "OUT 6", "OUT 7",
120};
121
122static SOC_ENUM_SINGLE_DECL(axg_frddr_sel_enum, FIFO_CTRL0, CTRL0_SEL_SHIFT,
123 axg_frddr_sel_texts);
124
125static const struct snd_kcontrol_new axg_frddr_out_demux =
126 SOC_DAPM_ENUM("Output Sink", axg_frddr_sel_enum);
127
128static const struct snd_soc_dapm_widget axg_frddr_dapm_widgets[] = {
129 SND_SOC_DAPM_DEMUX("SINK SEL", SND_SOC_NOPM, 0, 0,
130 &axg_frddr_out_demux),
131 SND_SOC_DAPM_AIF_OUT("OUT 0", NULL, 0, SND_SOC_NOPM, 0, 0),
132 SND_SOC_DAPM_AIF_OUT("OUT 1", NULL, 0, SND_SOC_NOPM, 0, 0),
133 SND_SOC_DAPM_AIF_OUT("OUT 2", NULL, 0, SND_SOC_NOPM, 0, 0),
134 SND_SOC_DAPM_AIF_OUT("OUT 3", NULL, 0, SND_SOC_NOPM, 0, 0),
135 SND_SOC_DAPM_AIF_OUT("OUT 4", NULL, 0, SND_SOC_NOPM, 0, 0),
136 SND_SOC_DAPM_AIF_OUT("OUT 5", NULL, 0, SND_SOC_NOPM, 0, 0),
137 SND_SOC_DAPM_AIF_OUT("OUT 6", NULL, 0, SND_SOC_NOPM, 0, 0),
138 SND_SOC_DAPM_AIF_OUT("OUT 7", NULL, 0, SND_SOC_NOPM, 0, 0),
139};
140
141static const struct snd_soc_dapm_route axg_frddr_dapm_routes[] = {
142 { "SINK SEL", NULL, "Playback" },
143 { "OUT 0", "OUT 0", "SINK SEL" },
144 { "OUT 1", "OUT 1", "SINK SEL" },
145 { "OUT 2", "OUT 2", "SINK SEL" },
146 { "OUT 3", "OUT 3", "SINK SEL" },
147 { "OUT 4", "OUT 4", "SINK SEL" },
148 { "OUT 5", "OUT 5", "SINK SEL" },
149 { "OUT 6", "OUT 6", "SINK SEL" },
150 { "OUT 7", "OUT 7", "SINK SEL" },
151};
152
153static const struct snd_soc_component_driver axg_frddr_component_drv = {
154 .dapm_widgets = axg_frddr_dapm_widgets,
155 .num_dapm_widgets = ARRAY_SIZE(axg_frddr_dapm_widgets),
156 .dapm_routes = axg_frddr_dapm_routes,
157 .num_dapm_routes = ARRAY_SIZE(axg_frddr_dapm_routes),
158 .open = axg_fifo_pcm_open,
159 .close = axg_fifo_pcm_close,
160 .hw_params = axg_fifo_pcm_hw_params,
161 .hw_free = axg_fifo_pcm_hw_free,
162 .pointer = axg_fifo_pcm_pointer,
163 .trigger = axg_fifo_pcm_trigger,
164 .legacy_dai_naming = 1,
165};
166
167static const struct axg_fifo_match_data axg_frddr_match_data = {
168 .field_threshold = REG_FIELD(FIFO_CTRL1, 16, 23),
169 .component_drv = &axg_frddr_component_drv,
170 .dai_drv = &axg_frddr_dai_drv
171};
172
173static const struct snd_soc_dai_ops g12a_frddr_ops = {
174 .prepare = g12a_frddr_dai_prepare,
175 .hw_params = axg_frddr_dai_hw_params,
176 .startup = axg_frddr_dai_startup,
177 .shutdown = axg_frddr_dai_shutdown,
178};
179
180static struct snd_soc_dai_driver g12a_frddr_dai_drv = {
181 .name = "FRDDR",
182 .playback = {
183 .stream_name = "Playback",
184 .channels_min = 1,
185 .channels_max = AXG_FIFO_CH_MAX,
186 .rates = AXG_FIFO_RATES,
187 .formats = AXG_FIFO_FORMATS,
188 },
189 .ops = &g12a_frddr_ops,
190 .pcm_new = axg_frddr_pcm_new,
191};
192
193static SOC_ENUM_SINGLE_DECL(g12a_frddr_sel1_enum, FIFO_CTRL0, CTRL0_SEL_SHIFT,
194 axg_frddr_sel_texts);
195static SOC_ENUM_SINGLE_DECL(g12a_frddr_sel2_enum, FIFO_CTRL0, CTRL0_SEL2_SHIFT,
196 axg_frddr_sel_texts);
197static SOC_ENUM_SINGLE_DECL(g12a_frddr_sel3_enum, FIFO_CTRL0, CTRL0_SEL3_SHIFT,
198 axg_frddr_sel_texts);
199
200static const struct snd_kcontrol_new g12a_frddr_out1_demux =
201 SOC_DAPM_ENUM("Output Src 1", g12a_frddr_sel1_enum);
202static const struct snd_kcontrol_new g12a_frddr_out2_demux =
203 SOC_DAPM_ENUM("Output Src 2", g12a_frddr_sel2_enum);
204static const struct snd_kcontrol_new g12a_frddr_out3_demux =
205 SOC_DAPM_ENUM("Output Src 3", g12a_frddr_sel3_enum);
206
207static const struct snd_kcontrol_new g12a_frddr_out1_enable =
208 SOC_DAPM_SINGLE_AUTODISABLE("Switch", FIFO_CTRL0,
209 CTRL0_SEL1_EN_SHIFT, 1, 0);
210static const struct snd_kcontrol_new g12a_frddr_out2_enable =
211 SOC_DAPM_SINGLE_AUTODISABLE("Switch", FIFO_CTRL0,
212 CTRL0_SEL2_EN_SHIFT, 1, 0);
213static const struct snd_kcontrol_new g12a_frddr_out3_enable =
214 SOC_DAPM_SINGLE_AUTODISABLE("Switch", FIFO_CTRL0,
215 CTRL0_SEL3_EN_SHIFT, 1, 0);
216
217static const struct snd_soc_dapm_widget g12a_frddr_dapm_widgets[] = {
218 SND_SOC_DAPM_AIF_OUT("SRC 1", NULL, 0, SND_SOC_NOPM, 0, 0),
219 SND_SOC_DAPM_AIF_OUT("SRC 2", NULL, 0, SND_SOC_NOPM, 0, 0),
220 SND_SOC_DAPM_AIF_OUT("SRC 3", NULL, 0, SND_SOC_NOPM, 0, 0),
221 SND_SOC_DAPM_SWITCH("SRC 1 EN", SND_SOC_NOPM, 0, 0,
222 &g12a_frddr_out1_enable),
223 SND_SOC_DAPM_SWITCH("SRC 2 EN", SND_SOC_NOPM, 0, 0,
224 &g12a_frddr_out2_enable),
225 SND_SOC_DAPM_SWITCH("SRC 3 EN", SND_SOC_NOPM, 0, 0,
226 &g12a_frddr_out3_enable),
227 SND_SOC_DAPM_DEMUX("SINK 1 SEL", SND_SOC_NOPM, 0, 0,
228 &g12a_frddr_out1_demux),
229 SND_SOC_DAPM_DEMUX("SINK 2 SEL", SND_SOC_NOPM, 0, 0,
230 &g12a_frddr_out2_demux),
231 SND_SOC_DAPM_DEMUX("SINK 3 SEL", SND_SOC_NOPM, 0, 0,
232 &g12a_frddr_out3_demux),
233 SND_SOC_DAPM_AIF_OUT("OUT 0", NULL, 0, SND_SOC_NOPM, 0, 0),
234 SND_SOC_DAPM_AIF_OUT("OUT 1", NULL, 0, SND_SOC_NOPM, 0, 0),
235 SND_SOC_DAPM_AIF_OUT("OUT 2", NULL, 0, SND_SOC_NOPM, 0, 0),
236 SND_SOC_DAPM_AIF_OUT("OUT 3", NULL, 0, SND_SOC_NOPM, 0, 0),
237 SND_SOC_DAPM_AIF_OUT("OUT 4", NULL, 0, SND_SOC_NOPM, 0, 0),
238 SND_SOC_DAPM_AIF_OUT("OUT 5", NULL, 0, SND_SOC_NOPM, 0, 0),
239 SND_SOC_DAPM_AIF_OUT("OUT 6", NULL, 0, SND_SOC_NOPM, 0, 0),
240 SND_SOC_DAPM_AIF_OUT("OUT 7", NULL, 0, SND_SOC_NOPM, 0, 0),
241};
242
243static const struct snd_soc_dapm_route g12a_frddr_dapm_routes[] = {
244 { "SRC 1", NULL, "Playback" },
245 { "SRC 2", NULL, "Playback" },
246 { "SRC 3", NULL, "Playback" },
247 { "SRC 1 EN", "Switch", "SRC 1" },
248 { "SRC 2 EN", "Switch", "SRC 2" },
249 { "SRC 3 EN", "Switch", "SRC 3" },
250 { "SINK 1 SEL", NULL, "SRC 1 EN" },
251 { "SINK 2 SEL", NULL, "SRC 2 EN" },
252 { "SINK 3 SEL", NULL, "SRC 3 EN" },
253 { "OUT 0", "OUT 0", "SINK 1 SEL" },
254 { "OUT 1", "OUT 1", "SINK 1 SEL" },
255 { "OUT 2", "OUT 2", "SINK 1 SEL" },
256 { "OUT 3", "OUT 3", "SINK 1 SEL" },
257 { "OUT 4", "OUT 4", "SINK 1 SEL" },
258 { "OUT 5", "OUT 5", "SINK 1 SEL" },
259 { "OUT 6", "OUT 6", "SINK 1 SEL" },
260 { "OUT 7", "OUT 7", "SINK 1 SEL" },
261 { "OUT 0", "OUT 0", "SINK 2 SEL" },
262 { "OUT 1", "OUT 1", "SINK 2 SEL" },
263 { "OUT 2", "OUT 2", "SINK 2 SEL" },
264 { "OUT 3", "OUT 3", "SINK 2 SEL" },
265 { "OUT 4", "OUT 4", "SINK 2 SEL" },
266 { "OUT 5", "OUT 5", "SINK 2 SEL" },
267 { "OUT 6", "OUT 6", "SINK 2 SEL" },
268 { "OUT 7", "OUT 7", "SINK 2 SEL" },
269 { "OUT 0", "OUT 0", "SINK 3 SEL" },
270 { "OUT 1", "OUT 1", "SINK 3 SEL" },
271 { "OUT 2", "OUT 2", "SINK 3 SEL" },
272 { "OUT 3", "OUT 3", "SINK 3 SEL" },
273 { "OUT 4", "OUT 4", "SINK 3 SEL" },
274 { "OUT 5", "OUT 5", "SINK 3 SEL" },
275 { "OUT 6", "OUT 6", "SINK 3 SEL" },
276 { "OUT 7", "OUT 7", "SINK 3 SEL" },
277};
278
279static const struct snd_soc_component_driver g12a_frddr_component_drv = {
280 .dapm_widgets = g12a_frddr_dapm_widgets,
281 .num_dapm_widgets = ARRAY_SIZE(g12a_frddr_dapm_widgets),
282 .dapm_routes = g12a_frddr_dapm_routes,
283 .num_dapm_routes = ARRAY_SIZE(g12a_frddr_dapm_routes),
284 .open = axg_fifo_pcm_open,
285 .close = axg_fifo_pcm_close,
286 .hw_params = g12a_fifo_pcm_hw_params,
287 .hw_free = axg_fifo_pcm_hw_free,
288 .pointer = axg_fifo_pcm_pointer,
289 .trigger = axg_fifo_pcm_trigger,
290 .legacy_dai_naming = 1,
291};
292
293static const struct axg_fifo_match_data g12a_frddr_match_data = {
294 .field_threshold = REG_FIELD(FIFO_CTRL1, 16, 23),
295 .component_drv = &g12a_frddr_component_drv,
296 .dai_drv = &g12a_frddr_dai_drv
297};
298
299/* On SM1, the output selection in on CTRL2 */
300static const struct snd_kcontrol_new sm1_frddr_out1_enable =
301 SOC_DAPM_SINGLE_AUTODISABLE("Switch", FIFO_CTRL2,
302 CTRL2_SEL1_EN_SHIFT, 1, 0);
303static const struct snd_kcontrol_new sm1_frddr_out2_enable =
304 SOC_DAPM_SINGLE_AUTODISABLE("Switch", FIFO_CTRL2,
305 CTRL2_SEL2_EN_SHIFT, 1, 0);
306static const struct snd_kcontrol_new sm1_frddr_out3_enable =
307 SOC_DAPM_SINGLE_AUTODISABLE("Switch", FIFO_CTRL2,
308 CTRL2_SEL3_EN_SHIFT, 1, 0);
309
310static SOC_ENUM_SINGLE_DECL(sm1_frddr_sel1_enum, FIFO_CTRL2, CTRL2_SEL1_SHIFT,
311 axg_frddr_sel_texts);
312static SOC_ENUM_SINGLE_DECL(sm1_frddr_sel2_enum, FIFO_CTRL2, CTRL2_SEL2_SHIFT,
313 axg_frddr_sel_texts);
314static SOC_ENUM_SINGLE_DECL(sm1_frddr_sel3_enum, FIFO_CTRL2, CTRL2_SEL3_SHIFT,
315 axg_frddr_sel_texts);
316
317static const struct snd_kcontrol_new sm1_frddr_out1_demux =
318 SOC_DAPM_ENUM("Output Src 1", sm1_frddr_sel1_enum);
319static const struct snd_kcontrol_new sm1_frddr_out2_demux =
320 SOC_DAPM_ENUM("Output Src 2", sm1_frddr_sel2_enum);
321static const struct snd_kcontrol_new sm1_frddr_out3_demux =
322 SOC_DAPM_ENUM("Output Src 3", sm1_frddr_sel3_enum);
323
324static const struct snd_soc_dapm_widget sm1_frddr_dapm_widgets[] = {
325 SND_SOC_DAPM_AIF_OUT("SRC 1", NULL, 0, SND_SOC_NOPM, 0, 0),
326 SND_SOC_DAPM_AIF_OUT("SRC 2", NULL, 0, SND_SOC_NOPM, 0, 0),
327 SND_SOC_DAPM_AIF_OUT("SRC 3", NULL, 0, SND_SOC_NOPM, 0, 0),
328 SND_SOC_DAPM_SWITCH("SRC 1 EN", SND_SOC_NOPM, 0, 0,
329 &sm1_frddr_out1_enable),
330 SND_SOC_DAPM_SWITCH("SRC 2 EN", SND_SOC_NOPM, 0, 0,
331 &sm1_frddr_out2_enable),
332 SND_SOC_DAPM_SWITCH("SRC 3 EN", SND_SOC_NOPM, 0, 0,
333 &sm1_frddr_out3_enable),
334 SND_SOC_DAPM_DEMUX("SINK 1 SEL", SND_SOC_NOPM, 0, 0,
335 &sm1_frddr_out1_demux),
336 SND_SOC_DAPM_DEMUX("SINK 2 SEL", SND_SOC_NOPM, 0, 0,
337 &sm1_frddr_out2_demux),
338 SND_SOC_DAPM_DEMUX("SINK 3 SEL", SND_SOC_NOPM, 0, 0,
339 &sm1_frddr_out3_demux),
340 SND_SOC_DAPM_AIF_OUT("OUT 0", NULL, 0, SND_SOC_NOPM, 0, 0),
341 SND_SOC_DAPM_AIF_OUT("OUT 1", NULL, 0, SND_SOC_NOPM, 0, 0),
342 SND_SOC_DAPM_AIF_OUT("OUT 2", NULL, 0, SND_SOC_NOPM, 0, 0),
343 SND_SOC_DAPM_AIF_OUT("OUT 3", NULL, 0, SND_SOC_NOPM, 0, 0),
344 SND_SOC_DAPM_AIF_OUT("OUT 4", NULL, 0, SND_SOC_NOPM, 0, 0),
345 SND_SOC_DAPM_AIF_OUT("OUT 5", NULL, 0, SND_SOC_NOPM, 0, 0),
346 SND_SOC_DAPM_AIF_OUT("OUT 6", NULL, 0, SND_SOC_NOPM, 0, 0),
347 SND_SOC_DAPM_AIF_OUT("OUT 7", NULL, 0, SND_SOC_NOPM, 0, 0),
348};
349
350static const struct snd_soc_component_driver sm1_frddr_component_drv = {
351 .dapm_widgets = sm1_frddr_dapm_widgets,
352 .num_dapm_widgets = ARRAY_SIZE(sm1_frddr_dapm_widgets),
353 .dapm_routes = g12a_frddr_dapm_routes,
354 .num_dapm_routes = ARRAY_SIZE(g12a_frddr_dapm_routes),
355 .open = axg_fifo_pcm_open,
356 .close = axg_fifo_pcm_close,
357 .hw_params = g12a_fifo_pcm_hw_params,
358 .hw_free = axg_fifo_pcm_hw_free,
359 .pointer = axg_fifo_pcm_pointer,
360 .trigger = axg_fifo_pcm_trigger,
361 .legacy_dai_naming = 1,
362};
363
364static const struct axg_fifo_match_data sm1_frddr_match_data = {
365 .field_threshold = REG_FIELD(FIFO_CTRL1, 16, 23),
366 .component_drv = &sm1_frddr_component_drv,
367 .dai_drv = &g12a_frddr_dai_drv
368};
369
370static const struct of_device_id axg_frddr_of_match[] = {
371 {
372 .compatible = "amlogic,axg-frddr",
373 .data = &axg_frddr_match_data,
374 }, {
375 .compatible = "amlogic,g12a-frddr",
376 .data = &g12a_frddr_match_data,
377 }, {
378 .compatible = "amlogic,sm1-frddr",
379 .data = &sm1_frddr_match_data,
380 }, {}
381};
382MODULE_DEVICE_TABLE(of, axg_frddr_of_match);
383
384static struct platform_driver axg_frddr_pdrv = {
385 .probe = axg_fifo_probe,
386 .driver = {
387 .name = "axg-frddr",
388 .of_match_table = axg_frddr_of_match,
389 },
390};
391module_platform_driver(axg_frddr_pdrv);
392
393MODULE_DESCRIPTION("Amlogic AXG/G12A playback fifo driver");
394MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
395MODULE_LICENSE("GPL v2");