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 | #include <linux/module.h> |
7 | #include <linux/of_platform.h> |
8 | #include <linux/regmap.h> |
9 | #include <sound/soc.h> |
10 | #include <sound/soc-dai.h> |
11 | |
12 | #include "axg-tdm-formatter.h" |
13 | |
14 | #define TDMOUT_CTRL0 0x00 |
15 | #define TDMOUT_CTRL0_BITNUM_MASK GENMASK(4, 0) |
16 | #define TDMOUT_CTRL0_BITNUM(x) ((x) << 0) |
17 | #define TDMOUT_CTRL0_SLOTNUM_MASK GENMASK(9, 5) |
18 | #define TDMOUT_CTRL0_SLOTNUM(x) ((x) << 5) |
19 | #define TDMOUT_CTRL0_INIT_BITNUM_MASK GENMASK(19, 15) |
20 | #define TDMOUT_CTRL0_INIT_BITNUM(x) ((x) << 15) |
21 | #define TDMOUT_CTRL0_ENABLE BIT(31) |
22 | #define TDMOUT_CTRL0_RST_OUT BIT(29) |
23 | #define TDMOUT_CTRL0_RST_IN BIT(28) |
24 | #define TDMOUT_CTRL1 0x04 |
25 | #define TDMOUT_CTRL1_TYPE_MASK GENMASK(6, 4) |
26 | #define TDMOUT_CTRL1_TYPE(x) ((x) << 4) |
27 | #define SM1_TDMOUT_CTRL1_GAIN_EN 7 |
28 | #define TDMOUT_CTRL1_MSB_POS_MASK GENMASK(12, 8) |
29 | #define TDMOUT_CTRL1_MSB_POS(x) ((x) << 8) |
30 | #define TDMOUT_CTRL1_SEL_SHIFT 24 |
31 | #define TDMOUT_CTRL1_GAIN_EN 26 |
32 | #define TDMOUT_CTRL1_WS_INV BIT(28) |
33 | #define TDMOUT_SWAP 0x08 |
34 | #define TDMOUT_MASK0 0x0c |
35 | #define TDMOUT_MASK1 0x10 |
36 | #define TDMOUT_MASK2 0x14 |
37 | #define TDMOUT_MASK3 0x18 |
38 | #define TDMOUT_STAT 0x1c |
39 | #define TDMOUT_GAIN0 0x20 |
40 | #define TDMOUT_GAIN1 0x24 |
41 | #define TDMOUT_MUTE_VAL 0x28 |
42 | #define TDMOUT_MUTE0 0x2c |
43 | #define TDMOUT_MUTE1 0x30 |
44 | #define TDMOUT_MUTE2 0x34 |
45 | #define TDMOUT_MUTE3 0x38 |
46 | #define TDMOUT_MASK_VAL 0x3c |
47 | |
48 | static const struct regmap_config axg_tdmout_regmap_cfg = { |
49 | .reg_bits = 32, |
50 | .val_bits = 32, |
51 | .reg_stride = 4, |
52 | .max_register = TDMOUT_MASK_VAL, |
53 | }; |
54 | |
55 | static struct snd_soc_dai * |
56 | axg_tdmout_get_be(struct snd_soc_dapm_widget *w) |
57 | { |
58 | struct snd_soc_dapm_path *p; |
59 | struct snd_soc_dai *be; |
60 | |
61 | snd_soc_dapm_widget_for_each_sink_path(w, p) { |
62 | if (!p->connect) |
63 | continue; |
64 | |
65 | if (p->sink->id == snd_soc_dapm_dai_in) |
66 | return (struct snd_soc_dai *)p->sink->priv; |
67 | |
68 | be = axg_tdmout_get_be(w: p->sink); |
69 | if (be) |
70 | return be; |
71 | } |
72 | |
73 | return NULL; |
74 | } |
75 | |
76 | static struct axg_tdm_stream * |
77 | axg_tdmout_get_tdm_stream(struct snd_soc_dapm_widget *w) |
78 | { |
79 | struct snd_soc_dai *be = axg_tdmout_get_be(w); |
80 | |
81 | if (!be) |
82 | return NULL; |
83 | |
84 | return snd_soc_dai_dma_data_get_playback(be); |
85 | } |
86 | |
87 | static void axg_tdmout_enable(struct regmap *map) |
88 | { |
89 | /* Apply both reset */ |
90 | regmap_update_bits(map, TDMOUT_CTRL0, |
91 | TDMOUT_CTRL0_RST_OUT | TDMOUT_CTRL0_RST_IN, val: 0); |
92 | |
93 | /* Clear out reset before in reset */ |
94 | regmap_update_bits(map, TDMOUT_CTRL0, |
95 | TDMOUT_CTRL0_RST_OUT, TDMOUT_CTRL0_RST_OUT); |
96 | regmap_update_bits(map, TDMOUT_CTRL0, |
97 | TDMOUT_CTRL0_RST_IN, TDMOUT_CTRL0_RST_IN); |
98 | |
99 | /* Actually enable tdmout */ |
100 | regmap_update_bits(map, TDMOUT_CTRL0, |
101 | TDMOUT_CTRL0_ENABLE, TDMOUT_CTRL0_ENABLE); |
102 | } |
103 | |
104 | static void axg_tdmout_disable(struct regmap *map) |
105 | { |
106 | regmap_update_bits(map, TDMOUT_CTRL0, TDMOUT_CTRL0_ENABLE, val: 0); |
107 | } |
108 | |
109 | static int axg_tdmout_prepare(struct regmap *map, |
110 | const struct axg_tdm_formatter_hw *quirks, |
111 | struct axg_tdm_stream *ts) |
112 | { |
113 | unsigned int val, skew = quirks->skew_offset; |
114 | |
115 | /* Set the stream skew */ |
116 | switch (ts->iface->fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
117 | case SND_SOC_DAIFMT_I2S: |
118 | case SND_SOC_DAIFMT_DSP_A: |
119 | break; |
120 | |
121 | case SND_SOC_DAIFMT_LEFT_J: |
122 | case SND_SOC_DAIFMT_DSP_B: |
123 | skew += 1; |
124 | break; |
125 | |
126 | default: |
127 | pr_err("Unsupported format: %u\n" , |
128 | ts->iface->fmt & SND_SOC_DAIFMT_FORMAT_MASK); |
129 | return -EINVAL; |
130 | } |
131 | |
132 | val = TDMOUT_CTRL0_INIT_BITNUM(skew); |
133 | |
134 | /* Set the slot width */ |
135 | val |= TDMOUT_CTRL0_BITNUM(ts->iface->slot_width - 1); |
136 | |
137 | /* Set the slot number */ |
138 | val |= TDMOUT_CTRL0_SLOTNUM(ts->iface->slots - 1); |
139 | |
140 | regmap_update_bits(map, TDMOUT_CTRL0, |
141 | TDMOUT_CTRL0_INIT_BITNUM_MASK | |
142 | TDMOUT_CTRL0_BITNUM_MASK | |
143 | TDMOUT_CTRL0_SLOTNUM_MASK, val); |
144 | |
145 | /* Set the sample width */ |
146 | val = TDMOUT_CTRL1_MSB_POS(ts->width - 1); |
147 | |
148 | /* FIFO data are arranged in chunks of 64bits */ |
149 | switch (ts->physical_width) { |
150 | case 8: |
151 | /* 8 samples of 8 bits */ |
152 | val |= TDMOUT_CTRL1_TYPE(0); |
153 | break; |
154 | case 16: |
155 | /* 4 samples of 16 bits - right justified */ |
156 | val |= TDMOUT_CTRL1_TYPE(2); |
157 | break; |
158 | case 32: |
159 | /* 2 samples of 32 bits - right justified */ |
160 | val |= TDMOUT_CTRL1_TYPE(4); |
161 | break; |
162 | default: |
163 | pr_err("Unsupported physical width: %u\n" , |
164 | ts->physical_width); |
165 | return -EINVAL; |
166 | } |
167 | |
168 | /* If the sample clock is inverted, invert it back for the formatter */ |
169 | if (axg_tdm_lrclk_invert(fmt: ts->iface->fmt)) |
170 | val |= TDMOUT_CTRL1_WS_INV; |
171 | |
172 | regmap_update_bits(map, TDMOUT_CTRL1, |
173 | mask: (TDMOUT_CTRL1_TYPE_MASK | TDMOUT_CTRL1_MSB_POS_MASK | |
174 | TDMOUT_CTRL1_WS_INV), val); |
175 | |
176 | /* Set static swap mask configuration */ |
177 | regmap_write(map, TDMOUT_SWAP, val: 0x76543210); |
178 | |
179 | return axg_tdm_formatter_set_channel_masks(map, ts, TDMOUT_MASK0); |
180 | } |
181 | |
182 | static const struct snd_kcontrol_new axg_tdmout_controls[] = { |
183 | SOC_DOUBLE("Lane 0 Volume" , TDMOUT_GAIN0, 0, 8, 255, 0), |
184 | SOC_DOUBLE("Lane 1 Volume" , TDMOUT_GAIN0, 16, 24, 255, 0), |
185 | SOC_DOUBLE("Lane 2 Volume" , TDMOUT_GAIN1, 0, 8, 255, 0), |
186 | SOC_DOUBLE("Lane 3 Volume" , TDMOUT_GAIN1, 16, 24, 255, 0), |
187 | SOC_SINGLE("Gain Enable Switch" , TDMOUT_CTRL1, |
188 | TDMOUT_CTRL1_GAIN_EN, 1, 0), |
189 | }; |
190 | |
191 | static const char * const axg_tdmout_sel_texts[] = { |
192 | "IN 0" , "IN 1" , "IN 2" , |
193 | }; |
194 | |
195 | static SOC_ENUM_SINGLE_DECL(axg_tdmout_sel_enum, TDMOUT_CTRL1, |
196 | TDMOUT_CTRL1_SEL_SHIFT, axg_tdmout_sel_texts); |
197 | |
198 | static const struct snd_kcontrol_new axg_tdmout_in_mux = |
199 | SOC_DAPM_ENUM("Input Source" , axg_tdmout_sel_enum); |
200 | |
201 | static const struct snd_soc_dapm_widget axg_tdmout_dapm_widgets[] = { |
202 | SND_SOC_DAPM_AIF_IN("IN 0" , NULL, 0, SND_SOC_NOPM, 0, 0), |
203 | SND_SOC_DAPM_AIF_IN("IN 1" , NULL, 0, SND_SOC_NOPM, 0, 0), |
204 | SND_SOC_DAPM_AIF_IN("IN 2" , NULL, 0, SND_SOC_NOPM, 0, 0), |
205 | SND_SOC_DAPM_MUX("SRC SEL" , SND_SOC_NOPM, 0, 0, &axg_tdmout_in_mux), |
206 | SND_SOC_DAPM_PGA_E("ENC" , SND_SOC_NOPM, 0, 0, NULL, 0, |
207 | axg_tdm_formatter_event, |
208 | (SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD)), |
209 | SND_SOC_DAPM_AIF_OUT("OUT" , NULL, 0, SND_SOC_NOPM, 0, 0), |
210 | }; |
211 | |
212 | static const struct snd_soc_dapm_route axg_tdmout_dapm_routes[] = { |
213 | { "SRC SEL" , "IN 0" , "IN 0" }, |
214 | { "SRC SEL" , "IN 1" , "IN 1" }, |
215 | { "SRC SEL" , "IN 2" , "IN 2" }, |
216 | { "ENC" , NULL, "SRC SEL" }, |
217 | { "OUT" , NULL, "ENC" }, |
218 | }; |
219 | |
220 | static const struct snd_soc_component_driver axg_tdmout_component_drv = { |
221 | .controls = axg_tdmout_controls, |
222 | .num_controls = ARRAY_SIZE(axg_tdmout_controls), |
223 | .dapm_widgets = axg_tdmout_dapm_widgets, |
224 | .num_dapm_widgets = ARRAY_SIZE(axg_tdmout_dapm_widgets), |
225 | .dapm_routes = axg_tdmout_dapm_routes, |
226 | .num_dapm_routes = ARRAY_SIZE(axg_tdmout_dapm_routes), |
227 | }; |
228 | |
229 | static const struct axg_tdm_formatter_ops axg_tdmout_ops = { |
230 | .get_stream = axg_tdmout_get_tdm_stream, |
231 | .prepare = axg_tdmout_prepare, |
232 | .enable = axg_tdmout_enable, |
233 | .disable = axg_tdmout_disable, |
234 | }; |
235 | |
236 | static const struct axg_tdm_formatter_driver axg_tdmout_drv = { |
237 | .component_drv = &axg_tdmout_component_drv, |
238 | .regmap_cfg = &axg_tdmout_regmap_cfg, |
239 | .ops = &axg_tdmout_ops, |
240 | .quirks = &(const struct axg_tdm_formatter_hw) { |
241 | .skew_offset = 1, |
242 | }, |
243 | }; |
244 | |
245 | static const struct axg_tdm_formatter_driver g12a_tdmout_drv = { |
246 | .component_drv = &axg_tdmout_component_drv, |
247 | .regmap_cfg = &axg_tdmout_regmap_cfg, |
248 | .ops = &axg_tdmout_ops, |
249 | .quirks = &(const struct axg_tdm_formatter_hw) { |
250 | .skew_offset = 2, |
251 | }, |
252 | }; |
253 | |
254 | static const struct snd_kcontrol_new sm1_tdmout_controls[] = { |
255 | SOC_DOUBLE("Lane 0 Volume" , TDMOUT_GAIN0, 0, 8, 255, 0), |
256 | SOC_DOUBLE("Lane 1 Volume" , TDMOUT_GAIN0, 16, 24, 255, 0), |
257 | SOC_DOUBLE("Lane 2 Volume" , TDMOUT_GAIN1, 0, 8, 255, 0), |
258 | SOC_DOUBLE("Lane 3 Volume" , TDMOUT_GAIN1, 16, 24, 255, 0), |
259 | SOC_SINGLE("Gain Enable Switch" , TDMOUT_CTRL1, |
260 | SM1_TDMOUT_CTRL1_GAIN_EN, 1, 0), |
261 | }; |
262 | |
263 | static const char * const sm1_tdmout_sel_texts[] = { |
264 | "IN 0" , "IN 1" , "IN 2" , "IN 3" , "IN 4" , |
265 | }; |
266 | |
267 | static SOC_ENUM_SINGLE_DECL(sm1_tdmout_sel_enum, TDMOUT_CTRL1, |
268 | TDMOUT_CTRL1_SEL_SHIFT, sm1_tdmout_sel_texts); |
269 | |
270 | static const struct snd_kcontrol_new sm1_tdmout_in_mux = |
271 | SOC_DAPM_ENUM("Input Source" , sm1_tdmout_sel_enum); |
272 | |
273 | static const struct snd_soc_dapm_widget sm1_tdmout_dapm_widgets[] = { |
274 | SND_SOC_DAPM_AIF_IN("IN 0" , NULL, 0, SND_SOC_NOPM, 0, 0), |
275 | SND_SOC_DAPM_AIF_IN("IN 1" , NULL, 0, SND_SOC_NOPM, 0, 0), |
276 | SND_SOC_DAPM_AIF_IN("IN 2" , NULL, 0, SND_SOC_NOPM, 0, 0), |
277 | SND_SOC_DAPM_AIF_IN("IN 3" , NULL, 0, SND_SOC_NOPM, 0, 0), |
278 | SND_SOC_DAPM_AIF_IN("IN 4" , NULL, 0, SND_SOC_NOPM, 0, 0), |
279 | SND_SOC_DAPM_MUX("SRC SEL" , SND_SOC_NOPM, 0, 0, &sm1_tdmout_in_mux), |
280 | SND_SOC_DAPM_PGA_E("ENC" , SND_SOC_NOPM, 0, 0, NULL, 0, |
281 | axg_tdm_formatter_event, |
282 | (SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD)), |
283 | SND_SOC_DAPM_AIF_OUT("OUT" , NULL, 0, SND_SOC_NOPM, 0, 0), |
284 | }; |
285 | |
286 | static const struct snd_soc_dapm_route sm1_tdmout_dapm_routes[] = { |
287 | { "SRC SEL" , "IN 0" , "IN 0" }, |
288 | { "SRC SEL" , "IN 1" , "IN 1" }, |
289 | { "SRC SEL" , "IN 2" , "IN 2" }, |
290 | { "SRC SEL" , "IN 3" , "IN 3" }, |
291 | { "SRC SEL" , "IN 4" , "IN 4" }, |
292 | { "ENC" , NULL, "SRC SEL" }, |
293 | { "OUT" , NULL, "ENC" }, |
294 | }; |
295 | |
296 | static const struct snd_soc_component_driver sm1_tdmout_component_drv = { |
297 | .controls = sm1_tdmout_controls, |
298 | .num_controls = ARRAY_SIZE(sm1_tdmout_controls), |
299 | .dapm_widgets = sm1_tdmout_dapm_widgets, |
300 | .num_dapm_widgets = ARRAY_SIZE(sm1_tdmout_dapm_widgets), |
301 | .dapm_routes = sm1_tdmout_dapm_routes, |
302 | .num_dapm_routes = ARRAY_SIZE(sm1_tdmout_dapm_routes), |
303 | }; |
304 | |
305 | static const struct axg_tdm_formatter_driver sm1_tdmout_drv = { |
306 | .component_drv = &sm1_tdmout_component_drv, |
307 | .regmap_cfg = &axg_tdmout_regmap_cfg, |
308 | .ops = &axg_tdmout_ops, |
309 | .quirks = &(const struct axg_tdm_formatter_hw) { |
310 | .skew_offset = 2, |
311 | }, |
312 | }; |
313 | |
314 | static const struct of_device_id axg_tdmout_of_match[] = { |
315 | { |
316 | .compatible = "amlogic,axg-tdmout" , |
317 | .data = &axg_tdmout_drv, |
318 | }, { |
319 | .compatible = "amlogic,g12a-tdmout" , |
320 | .data = &g12a_tdmout_drv, |
321 | }, { |
322 | .compatible = "amlogic,sm1-tdmout" , |
323 | .data = &sm1_tdmout_drv, |
324 | }, {} |
325 | }; |
326 | MODULE_DEVICE_TABLE(of, axg_tdmout_of_match); |
327 | |
328 | static struct platform_driver axg_tdmout_pdrv = { |
329 | .probe = axg_tdm_formatter_probe, |
330 | .driver = { |
331 | .name = "axg-tdmout" , |
332 | .of_match_table = axg_tdmout_of_match, |
333 | }, |
334 | }; |
335 | module_platform_driver(axg_tdmout_pdrv); |
336 | |
337 | MODULE_DESCRIPTION("Amlogic AXG TDM output formatter driver" ); |
338 | MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>" ); |
339 | MODULE_LICENSE("GPL v2" ); |
340 | |