1 // SPDX-License-Identifier: GPL-2.0
5 // Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
9 #define CTU_NAME_SIZE 16
10 #define CTU_NAME "ctu"
13 * User needs to setup CTU by amixer, and its settings are
14 * based on below registers
16 * CTUn_CPMDR : amixser set "CTU Pass"
17 * CTUn_SV0xR : amixser set "CTU SV0"
18 * CTUn_SV1xR : amixser set "CTU SV1"
19 * CTUn_SV2xR : amixser set "CTU SV2"
20 * CTUn_SV3xR : amixser set "CTU SV3"
24 * 0001: Connect input data of channel 0
25 * 0010: Connect input data of channel 1
26 * 0011: Connect input data of channel 2
27 * 0100: Connect input data of channel 3
28 * 0101: Connect input data of channel 4
29 * 0110: Connect input data of channel 5
30 * 0111: Connect input data of channel 6
31 * 1000: Connect input data of channel 7
32 * 1001: Connect calculated data by scale values of matrix row 0
33 * 1010: Connect calculated data by scale values of matrix row 1
34 * 1011: Connect calculated data by scale values of matrix row 2
35 * 1100: Connect calculated data by scale values of matrix row 3
38 * [Output0] = [SV00, SV01, SV02, SV03, SV04, SV05, SV06, SV07]
39 * [Output1] = [SV10, SV11, SV12, SV13, SV14, SV15, SV16, SV17]
40 * [Output2] = [SV20, SV21, SV22, SV23, SV24, SV25, SV26, SV27]
41 * [Output3] = [SV30, SV31, SV32, SV33, SV34, SV35, SV36, SV37]
42 * [Output4] = [ 0, 0, 0, 0, 0, 0, 0, 0 ]
43 * [Output5] = [ 0, 0, 0, 0, 0, 0, 0, 0 ]
44 * [Output6] = [ 0, 0, 0, 0, 0, 0, 0, 0 ]
45 * [Output7] = [ 0, 0, 0, 0, 0, 0, 0, 0 ]
49 * value time dB value time dB
50 * -----------------------------------------------------------------------
51 * H'7F_FFFF 2 6 H'80_0000 2 6
53 * H'40_0000 1 0 H'C0_0000 1 0
55 * H'00_0001 2.38 x 10^-7 -132
56 * H'00_0000 0 Mute H'FF_FFFF 2.38 x 10^-7 -132
59 * Ex) Input ch -> Output ch
63 * amixer set "CTU Reset" on
64 * amixer set "CTU Pass" 9,10
65 * amixer set "CTU SV0" 0,4194304
66 * amixer set "CTU SV1" 4194304,0
68 * amixer set "CTU Reset" on
69 * amixer set "CTU Pass" 2,1
74 struct rsnd_kctrl_cfg_m pass;
75 struct rsnd_kctrl_cfg_m sv[4];
76 struct rsnd_kctrl_cfg_s reset;
81 #define KCTRL_INITIALIZED (1 << 0)
83 #define rsnd_ctu_nr(priv) ((priv)->ctu_nr)
84 #define for_each_rsnd_ctu(pos, priv, i) \
86 ((i) < rsnd_ctu_nr(priv)) && \
87 ((pos) = (struct rsnd_ctu *)(priv)->ctu + i); \
90 #define rsnd_mod_to_ctu(_mod) \
91 container_of((_mod), struct rsnd_ctu, mod)
93 #define rsnd_ctu_get(priv, id) ((struct rsnd_ctu *)(priv->ctu) + id)
95 static void rsnd_ctu_activation(struct rsnd_mod *mod)
97 rsnd_mod_write(mod, CTU_SWRSR, 0);
98 rsnd_mod_write(mod, CTU_SWRSR, 1);
101 static void rsnd_ctu_halt(struct rsnd_mod *mod)
103 rsnd_mod_write(mod, CTU_CTUIR, 1);
104 rsnd_mod_write(mod, CTU_SWRSR, 0);
107 static int rsnd_ctu_probe_(struct rsnd_mod *mod,
108 struct rsnd_dai_stream *io,
109 struct rsnd_priv *priv)
111 return rsnd_cmd_attach(io, rsnd_mod_id(mod));
114 static void rsnd_ctu_value_init(struct rsnd_dai_stream *io,
115 struct rsnd_mod *mod)
117 struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
122 for (i = 0; i < RSND_MAX_CHANNELS; i++) {
123 u32 val = rsnd_kctrl_valm(ctu->pass, i);
125 cpmdr |= val << (28 - (i * 4));
127 if ((val > 0x8) && (scmdr < (val - 0x8)))
131 rsnd_mod_write(mod, CTU_CTUIR, 1);
133 rsnd_mod_write(mod, CTU_ADINR, rsnd_runtime_channel_original(io));
135 rsnd_mod_write(mod, CTU_CPMDR, cpmdr);
137 rsnd_mod_write(mod, CTU_SCMDR, scmdr);
139 for (i = 0; i < 4; i++) {
144 for (j = 0; j < RSND_MAX_CHANNELS; j++)
145 rsnd_mod_write(mod, CTU_SVxxR(i, j), rsnd_kctrl_valm(ctu->sv[i], j));
148 rsnd_mod_write(mod, CTU_CTUIR, 0);
151 static void rsnd_ctu_value_reset(struct rsnd_dai_stream *io,
152 struct rsnd_mod *mod)
154 struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
157 if (!rsnd_kctrl_vals(ctu->reset))
160 for (i = 0; i < RSND_MAX_CHANNELS; i++) {
161 rsnd_kctrl_valm(ctu->pass, i) = 0;
162 rsnd_kctrl_valm(ctu->sv[0], i) = 0;
163 rsnd_kctrl_valm(ctu->sv[1], i) = 0;
164 rsnd_kctrl_valm(ctu->sv[2], i) = 0;
165 rsnd_kctrl_valm(ctu->sv[3], i) = 0;
167 rsnd_kctrl_vals(ctu->reset) = 0;
170 static int rsnd_ctu_init(struct rsnd_mod *mod,
171 struct rsnd_dai_stream *io,
172 struct rsnd_priv *priv)
176 ret = rsnd_mod_power_on(mod);
180 rsnd_ctu_activation(mod);
182 rsnd_ctu_value_init(io, mod);
187 static int rsnd_ctu_quit(struct rsnd_mod *mod,
188 struct rsnd_dai_stream *io,
189 struct rsnd_priv *priv)
193 rsnd_mod_power_off(mod);
198 static int rsnd_ctu_pcm_new(struct rsnd_mod *mod,
199 struct rsnd_dai_stream *io,
200 struct snd_soc_pcm_runtime *rtd)
202 struct rsnd_ctu *ctu = rsnd_mod_to_ctu(mod);
205 if (rsnd_flags_has(ctu, KCTRL_INITIALIZED))
209 ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU Pass",
210 rsnd_kctrl_accept_anytime,
212 &ctu->pass, RSND_MAX_CHANNELS,
218 ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV0",
219 rsnd_kctrl_accept_anytime,
221 &ctu->sv[0], RSND_MAX_CHANNELS,
227 ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV1",
228 rsnd_kctrl_accept_anytime,
230 &ctu->sv[1], RSND_MAX_CHANNELS,
236 ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV2",
237 rsnd_kctrl_accept_anytime,
239 &ctu->sv[2], RSND_MAX_CHANNELS,
245 ret = rsnd_kctrl_new_m(mod, io, rtd, "CTU SV3",
246 rsnd_kctrl_accept_anytime,
248 &ctu->sv[3], RSND_MAX_CHANNELS,
254 ret = rsnd_kctrl_new_s(mod, io, rtd, "CTU Reset",
255 rsnd_kctrl_accept_anytime,
256 rsnd_ctu_value_reset,
259 rsnd_flags_set(ctu, KCTRL_INITIALIZED);
264 static int rsnd_ctu_id(struct rsnd_mod *mod)
267 * ctu00: -> 0, ctu01: -> 0, ctu02: -> 0, ctu03: -> 0
268 * ctu10: -> 1, ctu11: -> 1, ctu12: -> 1, ctu13: -> 1
273 static int rsnd_ctu_id_sub(struct rsnd_mod *mod)
276 * ctu00: -> 0, ctu01: -> 1, ctu02: -> 2, ctu03: -> 3
277 * ctu10: -> 0, ctu11: -> 1, ctu12: -> 2, ctu13: -> 3
282 #ifdef CONFIG_DEBUG_FS
283 static void rsnd_ctu_debug_info(struct seq_file *m,
284 struct rsnd_dai_stream *io,
285 struct rsnd_mod *mod)
287 rsnd_debugfs_mod_reg_show(m, mod, RSND_GEN2_SCU,
288 0x500 + rsnd_mod_id_raw(mod) * 0x100, 0x100);
290 #define DEBUG_INFO .debug_info = rsnd_ctu_debug_info
295 static struct rsnd_mod_ops rsnd_ctu_ops = {
297 .probe = rsnd_ctu_probe_,
298 .init = rsnd_ctu_init,
299 .quit = rsnd_ctu_quit,
300 .pcm_new = rsnd_ctu_pcm_new,
301 .get_status = rsnd_mod_get_status,
303 .id_sub = rsnd_ctu_id_sub,
304 .id_cmd = rsnd_mod_id_raw,
308 struct rsnd_mod *rsnd_ctu_mod_get(struct rsnd_priv *priv, int id)
310 if (WARN_ON(id < 0 || id >= rsnd_ctu_nr(priv)))
313 return rsnd_mod_get(rsnd_ctu_get(priv, id));
316 int rsnd_ctu_probe(struct rsnd_priv *priv)
318 struct device_node *node;
319 struct device_node *np;
320 struct device *dev = rsnd_priv_to_dev(priv);
321 struct rsnd_ctu *ctu;
323 char name[CTU_NAME_SIZE];
326 /* This driver doesn't support Gen1 at this point */
327 if (rsnd_is_gen1(priv))
330 node = rsnd_ctu_of_node(priv);
332 return 0; /* not used is not error */
334 nr = of_get_child_count(node);
337 goto rsnd_ctu_probe_done;
340 ctu = devm_kcalloc(dev, nr, sizeof(*ctu), GFP_KERNEL);
343 goto rsnd_ctu_probe_done;
351 for_each_child_of_node(node, np) {
352 ctu = rsnd_ctu_get(priv, i);
355 * CTU00, CTU01, CTU02, CTU03 => CTU0
356 * CTU10, CTU11, CTU12, CTU13 => CTU1
358 snprintf(name, CTU_NAME_SIZE, "%s.%d",
361 clk = devm_clk_get(dev, name);
365 goto rsnd_ctu_probe_done;
368 ret = rsnd_mod_init(priv, rsnd_mod_get(ctu), &rsnd_ctu_ops,
369 clk, RSND_MOD_CTU, i);
372 goto rsnd_ctu_probe_done;
385 void rsnd_ctu_remove(struct rsnd_priv *priv)
387 struct rsnd_ctu *ctu;
390 for_each_rsnd_ctu(ctu, priv, i) {
391 rsnd_mod_quit(rsnd_mod_get(ctu));