1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // mix.c
4 //
5 // Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6
7 /*
8 * CTUn MIXn
9 * +------+ +------+
10 * [SRC3 / SRC6] -> |CTU n0| -> [MIX n0| ->
11 * [SRC4 / SRC9] -> |CTU n1| -> [MIX n1| ->
12 * [SRC0 / SRC1] -> |CTU n2| -> [MIX n2| ->
13 * [SRC2 / SRC5] -> |CTU n3| -> [MIX n3| ->
14 * +------+ +------+
15 *
16 * ex)
17 * DAI0 : playback = <&src0 &ctu02 &mix0 &dvc0 &ssi0>;
18 * DAI1 : playback = <&src2 &ctu03 &mix0 &dvc0 &ssi0>;
19 *
20 * MIX Volume
21 * amixer set "MIX",0 100% // DAI0 Volume
22 * amixer set "MIX",1 100% // DAI1 Volume
23 *
24 * Volume Ramp
25 * amixer set "MIX Ramp Up Rate" "0.125 dB/1 step"
26 * amixer set "MIX Ramp Down Rate" "4 dB/1 step"
27 * amixer set "MIX Ramp" on
28 * aplay xxx.wav &
29 * amixer set "MIX",0 80% // DAI0 Volume Down
30 * amixer set "MIX",1 100% // DAI1 Volume Up
31 */
32
33 #include "rsnd.h"
34
35 #define MIX_NAME_SIZE 16
36 #define MIX_NAME "mix"
37
38 struct rsnd_mix {
39 struct rsnd_mod mod;
40 struct rsnd_kctrl_cfg_s volumeA; /* MDBAR */
41 struct rsnd_kctrl_cfg_s volumeB; /* MDBBR */
42 struct rsnd_kctrl_cfg_s volumeC; /* MDBCR */
43 struct rsnd_kctrl_cfg_s volumeD; /* MDBDR */
44 struct rsnd_kctrl_cfg_s ren; /* Ramp Enable */
45 struct rsnd_kctrl_cfg_s rup; /* Ramp Rate Up */
46 struct rsnd_kctrl_cfg_s rdw; /* Ramp Rate Down */
47 u32 flags;
48 };
49
50 #define ONCE_KCTRL_INITIALIZED (1 << 0)
51 #define HAS_VOLA (1 << 1)
52 #define HAS_VOLB (1 << 2)
53 #define HAS_VOLC (1 << 3)
54 #define HAS_VOLD (1 << 4)
55
56 #define VOL_MAX 0x3ff
57
58 #define rsnd_mod_to_mix(_mod) \
59 container_of((_mod), struct rsnd_mix, mod)
60
61 #define rsnd_mix_get(priv, id) ((struct rsnd_mix *)(priv->mix) + id)
62 #define rsnd_mix_nr(priv) ((priv)->mix_nr)
63 #define for_each_rsnd_mix(pos, priv, i) \
64 for ((i) = 0; \
65 ((i) < rsnd_mix_nr(priv)) && \
66 ((pos) = (struct rsnd_mix *)(priv)->mix + i); \
67 i++)
68
rsnd_mix_activation(struct rsnd_mod * mod)69 static void rsnd_mix_activation(struct rsnd_mod *mod)
70 {
71 rsnd_mod_write(mod, MIX_SWRSR, 0);
72 rsnd_mod_write(mod, MIX_SWRSR, 1);
73 }
74
rsnd_mix_halt(struct rsnd_mod * mod)75 static void rsnd_mix_halt(struct rsnd_mod *mod)
76 {
77 rsnd_mod_write(mod, MIX_MIXIR, 1);
78 rsnd_mod_write(mod, MIX_SWRSR, 0);
79 }
80
81 #define rsnd_mix_get_vol(mix, X) \
82 rsnd_flags_has(mix, HAS_VOL##X) ? \
83 (VOL_MAX - rsnd_kctrl_vals(mix->volume##X)) : 0
rsnd_mix_volume_parameter(struct rsnd_dai_stream * io,struct rsnd_mod * mod)84 static void rsnd_mix_volume_parameter(struct rsnd_dai_stream *io,
85 struct rsnd_mod *mod)
86 {
87 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
88 struct device *dev = rsnd_priv_to_dev(priv);
89 struct rsnd_mix *mix = rsnd_mod_to_mix(mod);
90 u32 volA = rsnd_mix_get_vol(mix, A);
91 u32 volB = rsnd_mix_get_vol(mix, B);
92 u32 volC = rsnd_mix_get_vol(mix, C);
93 u32 volD = rsnd_mix_get_vol(mix, D);
94
95 dev_dbg(dev, "MIX A/B/C/D = %02x/%02x/%02x/%02x\n",
96 volA, volB, volC, volD);
97
98 rsnd_mod_write(mod, MIX_MDBAR, volA);
99 rsnd_mod_write(mod, MIX_MDBBR, volB);
100 rsnd_mod_write(mod, MIX_MDBCR, volC);
101 rsnd_mod_write(mod, MIX_MDBDR, volD);
102 }
103
rsnd_mix_volume_init(struct rsnd_dai_stream * io,struct rsnd_mod * mod)104 static void rsnd_mix_volume_init(struct rsnd_dai_stream *io,
105 struct rsnd_mod *mod)
106 {
107 struct rsnd_mix *mix = rsnd_mod_to_mix(mod);
108
109 rsnd_mod_write(mod, MIX_MIXIR, 1);
110
111 /* General Information */
112 rsnd_mod_write(mod, MIX_ADINR, rsnd_runtime_channel_after_ctu(io));
113
114 /* volume step */
115 rsnd_mod_write(mod, MIX_MIXMR, rsnd_kctrl_vals(mix->ren));
116 rsnd_mod_write(mod, MIX_MVPDR, rsnd_kctrl_vals(mix->rup) << 8 |
117 rsnd_kctrl_vals(mix->rdw));
118
119 /* common volume parameter */
120 rsnd_mix_volume_parameter(io, mod);
121
122 rsnd_mod_write(mod, MIX_MIXIR, 0);
123 }
124
rsnd_mix_volume_update(struct rsnd_dai_stream * io,struct rsnd_mod * mod)125 static void rsnd_mix_volume_update(struct rsnd_dai_stream *io,
126 struct rsnd_mod *mod)
127 {
128 /* Disable MIX dB setting */
129 rsnd_mod_write(mod, MIX_MDBER, 0);
130
131 /* common volume parameter */
132 rsnd_mix_volume_parameter(io, mod);
133
134 /* Enable MIX dB setting */
135 rsnd_mod_write(mod, MIX_MDBER, 1);
136 }
137
rsnd_mix_probe_(struct rsnd_mod * mod,struct rsnd_dai_stream * io,struct rsnd_priv * priv)138 static int rsnd_mix_probe_(struct rsnd_mod *mod,
139 struct rsnd_dai_stream *io,
140 struct rsnd_priv *priv)
141 {
142 return rsnd_cmd_attach(io, rsnd_mod_id(mod));
143 }
144
rsnd_mix_init(struct rsnd_mod * mod,struct rsnd_dai_stream * io,struct rsnd_priv * priv)145 static int rsnd_mix_init(struct rsnd_mod *mod,
146 struct rsnd_dai_stream *io,
147 struct rsnd_priv *priv)
148 {
149 rsnd_mod_power_on(mod);
150
151 rsnd_mix_activation(mod);
152
153 rsnd_mix_volume_init(io, mod);
154
155 rsnd_mix_volume_update(io, mod);
156
157 return 0;
158 }
159
rsnd_mix_quit(struct rsnd_mod * mod,struct rsnd_dai_stream * io,struct rsnd_priv * priv)160 static int rsnd_mix_quit(struct rsnd_mod *mod,
161 struct rsnd_dai_stream *io,
162 struct rsnd_priv *priv)
163 {
164 rsnd_mix_halt(mod);
165
166 rsnd_mod_power_off(mod);
167
168 return 0;
169 }
170
rsnd_mix_pcm_new(struct rsnd_mod * mod,struct rsnd_dai_stream * io,struct snd_soc_pcm_runtime * rtd)171 static int rsnd_mix_pcm_new(struct rsnd_mod *mod,
172 struct rsnd_dai_stream *io,
173 struct snd_soc_pcm_runtime *rtd)
174 {
175 struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
176 struct device *dev = rsnd_priv_to_dev(priv);
177 struct rsnd_mix *mix = rsnd_mod_to_mix(mod);
178 struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
179 struct rsnd_kctrl_cfg_s *volume;
180 int ret;
181
182 switch (rsnd_mod_id(src_mod)) {
183 case 3:
184 case 6: /* MDBAR */
185 volume = &mix->volumeA;
186 rsnd_flags_set(mix, HAS_VOLA);
187 break;
188 case 4:
189 case 9: /* MDBBR */
190 volume = &mix->volumeB;
191 rsnd_flags_set(mix, HAS_VOLB);
192 break;
193 case 0:
194 case 1: /* MDBCR */
195 volume = &mix->volumeC;
196 rsnd_flags_set(mix, HAS_VOLC);
197 break;
198 case 2:
199 case 5: /* MDBDR */
200 volume = &mix->volumeD;
201 rsnd_flags_set(mix, HAS_VOLD);
202 break;
203 default:
204 dev_err(dev, "unknown SRC is connected\n");
205 return -EINVAL;
206 }
207
208 /* Volume */
209 ret = rsnd_kctrl_new_s(mod, io, rtd,
210 "MIX Playback Volume",
211 rsnd_kctrl_accept_anytime,
212 rsnd_mix_volume_update,
213 volume, VOL_MAX);
214 if (ret < 0)
215 return ret;
216 rsnd_kctrl_vals(*volume) = VOL_MAX;
217
218 if (rsnd_flags_has(mix, ONCE_KCTRL_INITIALIZED))
219 return ret;
220
221 /* Ramp */
222 ret = rsnd_kctrl_new_s(mod, io, rtd,
223 "MIX Ramp Switch",
224 rsnd_kctrl_accept_anytime,
225 rsnd_mix_volume_update,
226 &mix->ren, 1);
227 if (ret < 0)
228 return ret;
229
230 ret = rsnd_kctrl_new_e(mod, io, rtd,
231 "MIX Ramp Up Rate",
232 rsnd_kctrl_accept_anytime,
233 rsnd_mix_volume_update,
234 &mix->rup,
235 volume_ramp_rate,
236 VOLUME_RAMP_MAX_MIX);
237 if (ret < 0)
238 return ret;
239
240 ret = rsnd_kctrl_new_e(mod, io, rtd,
241 "MIX Ramp Down Rate",
242 rsnd_kctrl_accept_anytime,
243 rsnd_mix_volume_update,
244 &mix->rdw,
245 volume_ramp_rate,
246 VOLUME_RAMP_MAX_MIX);
247
248 rsnd_flags_set(mix, ONCE_KCTRL_INITIALIZED);
249
250 return ret;
251 }
252
253 static struct rsnd_mod_ops rsnd_mix_ops = {
254 .name = MIX_NAME,
255 .probe = rsnd_mix_probe_,
256 .init = rsnd_mix_init,
257 .quit = rsnd_mix_quit,
258 .pcm_new = rsnd_mix_pcm_new,
259 };
260
rsnd_mix_mod_get(struct rsnd_priv * priv,int id)261 struct rsnd_mod *rsnd_mix_mod_get(struct rsnd_priv *priv, int id)
262 {
263 if (WARN_ON(id < 0 || id >= rsnd_mix_nr(priv)))
264 id = 0;
265
266 return rsnd_mod_get(rsnd_mix_get(priv, id));
267 }
268
rsnd_mix_probe(struct rsnd_priv * priv)269 int rsnd_mix_probe(struct rsnd_priv *priv)
270 {
271 struct device_node *node;
272 struct device_node *np;
273 struct device *dev = rsnd_priv_to_dev(priv);
274 struct rsnd_mix *mix;
275 struct clk *clk;
276 char name[MIX_NAME_SIZE];
277 int i, nr, ret;
278
279 /* This driver doesn't support Gen1 at this point */
280 if (rsnd_is_gen1(priv))
281 return 0;
282
283 node = rsnd_mix_of_node(priv);
284 if (!node)
285 return 0; /* not used is not error */
286
287 nr = of_get_child_count(node);
288 if (!nr) {
289 ret = -EINVAL;
290 goto rsnd_mix_probe_done;
291 }
292
293 mix = devm_kcalloc(dev, nr, sizeof(*mix), GFP_KERNEL);
294 if (!mix) {
295 ret = -ENOMEM;
296 goto rsnd_mix_probe_done;
297 }
298
299 priv->mix_nr = nr;
300 priv->mix = mix;
301
302 i = 0;
303 ret = 0;
304 for_each_child_of_node(node, np) {
305 mix = rsnd_mix_get(priv, i);
306
307 snprintf(name, MIX_NAME_SIZE, "%s.%d",
308 MIX_NAME, i);
309
310 clk = devm_clk_get(dev, name);
311 if (IS_ERR(clk)) {
312 ret = PTR_ERR(clk);
313 of_node_put(np);
314 goto rsnd_mix_probe_done;
315 }
316
317 ret = rsnd_mod_init(priv, rsnd_mod_get(mix), &rsnd_mix_ops,
318 clk, rsnd_mod_get_status, RSND_MOD_MIX, i);
319 if (ret) {
320 of_node_put(np);
321 goto rsnd_mix_probe_done;
322 }
323
324 i++;
325 }
326
327 rsnd_mix_probe_done:
328 of_node_put(node);
329
330 return ret;
331 }
332
rsnd_mix_remove(struct rsnd_priv * priv)333 void rsnd_mix_remove(struct rsnd_priv *priv)
334 {
335 struct rsnd_mix *mix;
336 int i;
337
338 for_each_rsnd_mix(mix, priv, i) {
339 rsnd_mod_quit(rsnd_mod_get(mix));
340 }
341 }
342
