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Commit | Line | Data |
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ae5c3223 KM |
1 | /* |
2 | * Renesas R-Car SSIU/SSI support | |
3 | * | |
4 | * Copyright (C) 2013 Renesas Solutions Corp. | |
5 | * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
6 | * | |
7 | * Based on fsi.c | |
8 | * Kuninori Morimoto <morimoto.kuninori@renesas.com> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | */ | |
7fa72cca | 14 | #include <sound/simple_card_utils.h> |
ae5c3223 KM |
15 | #include <linux/delay.h> |
16 | #include "rsnd.h" | |
17 | #define RSND_SSI_NAME_SIZE 16 | |
18 | ||
19 | /* | |
20 | * SSICR | |
21 | */ | |
22 | #define FORCE (1 << 31) /* Fixed */ | |
849fc82a | 23 | #define DMEN (1 << 28) /* DMA Enable */ |
ae5c3223 KM |
24 | #define UIEN (1 << 27) /* Underflow Interrupt Enable */ |
25 | #define OIEN (1 << 26) /* Overflow Interrupt Enable */ | |
26 | #define IIEN (1 << 25) /* Idle Mode Interrupt Enable */ | |
27 | #define DIEN (1 << 24) /* Data Interrupt Enable */ | |
186fadc1 KM |
28 | #define CHNL_4 (1 << 22) /* Channels */ |
29 | #define CHNL_6 (2 << 22) /* Channels */ | |
30 | #define CHNL_8 (3 << 22) /* Channels */ | |
ae5c3223 KM |
31 | #define DWL_8 (0 << 19) /* Data Word Length */ |
32 | #define DWL_16 (1 << 19) /* Data Word Length */ | |
33 | #define DWL_18 (2 << 19) /* Data Word Length */ | |
34 | #define DWL_20 (3 << 19) /* Data Word Length */ | |
35 | #define DWL_22 (4 << 19) /* Data Word Length */ | |
36 | #define DWL_24 (5 << 19) /* Data Word Length */ | |
37 | #define DWL_32 (6 << 19) /* Data Word Length */ | |
38 | ||
39 | #define SWL_32 (3 << 16) /* R/W System Word Length */ | |
40 | #define SCKD (1 << 15) /* Serial Bit Clock Direction */ | |
41 | #define SWSD (1 << 14) /* Serial WS Direction */ | |
42 | #define SCKP (1 << 13) /* Serial Bit Clock Polarity */ | |
43 | #define SWSP (1 << 12) /* Serial WS Polarity */ | |
44 | #define SDTA (1 << 10) /* Serial Data Alignment */ | |
f46a93b8 | 45 | #define PDTA (1 << 9) /* Parallel Data Alignment */ |
ae5c3223 KM |
46 | #define DEL (1 << 8) /* Serial Data Delay */ |
47 | #define CKDV(v) (v << 4) /* Serial Clock Division Ratio */ | |
48 | #define TRMD (1 << 1) /* Transmit/Receive Mode Select */ | |
49 | #define EN (1 << 0) /* SSI Module Enable */ | |
50 | ||
51 | /* | |
52 | * SSISR | |
53 | */ | |
54 | #define UIRQ (1 << 27) /* Underflow Error Interrupt Status */ | |
55 | #define OIRQ (1 << 26) /* Overflow Error Interrupt Status */ | |
56 | #define IIRQ (1 << 25) /* Idle Mode Interrupt Status */ | |
57 | #define DIRQ (1 << 24) /* Data Interrupt Status Flag */ | |
58 | ||
849fc82a KM |
59 | /* |
60 | * SSIWSR | |
61 | */ | |
62 | #define CONT (1 << 8) /* WS Continue Function */ | |
186fadc1 | 63 | #define WS_MODE (1 << 0) /* WS Mode */ |
849fc82a | 64 | |
8aefda50 KM |
65 | #define SSI_NAME "ssi" |
66 | ||
ae5c3223 | 67 | struct rsnd_ssi { |
ae5c3223 | 68 | struct rsnd_mod mod; |
940e9479 | 69 | struct rsnd_mod *dma; |
ae5c3223 | 70 | |
02534f2f | 71 | u32 flags; |
ae5c3223 KM |
72 | u32 cr_own; |
73 | u32 cr_clk; | |
e7d850dd | 74 | u32 cr_mode; |
597b046f | 75 | u32 cr_en; |
08bada26 | 76 | u32 wsr; |
919567d9 | 77 | int chan; |
e7d850dd | 78 | int rate; |
02534f2f | 79 | int irq; |
ae5c3223 | 80 | unsigned int usrcnt; |
a97a06c7 KM |
81 | |
82 | int byte_pos; | |
83 | int period_pos; | |
84 | int byte_per_period; | |
85 | int next_period_byte; | |
ae5c3223 KM |
86 | }; |
87 | ||
02534f2f KM |
88 | /* flags */ |
89 | #define RSND_SSI_CLK_PIN_SHARE (1 << 0) | |
90 | #define RSND_SSI_NO_BUSIF (1 << 1) /* SSI+DMA without BUSIF */ | |
7fa72cca KM |
91 | #define RSND_SSI_HDMI0 (1 << 2) /* for HDMI0 */ |
92 | #define RSND_SSI_HDMI1 (1 << 3) /* for HDMI1 */ | |
b6e58fca | 93 | #define RSND_SSI_PROBED (1 << 4) |
02534f2f | 94 | |
ae5c3223 KM |
95 | #define for_each_rsnd_ssi(pos, priv, i) \ |
96 | for (i = 0; \ | |
97 | (i < rsnd_ssi_nr(priv)) && \ | |
dd27d808 | 98 | ((pos) = ((struct rsnd_ssi *)(priv)->ssi + i)); \ |
ae5c3223 KM |
99 | i++) |
100 | ||
02534f2f | 101 | #define rsnd_ssi_get(priv, id) ((struct rsnd_ssi *)(priv->ssi) + id) |
dd27d808 | 102 | #define rsnd_ssi_nr(priv) ((priv)->ssi_nr) |
ae5c3223 | 103 | #define rsnd_mod_to_ssi(_mod) container_of((_mod), struct rsnd_ssi, mod) |
e7d850dd | 104 | #define rsnd_ssi_is_parent(ssi, io) ((ssi) == rsnd_io_to_mod_ssip(io)) |
c308abe4 KM |
105 | #define rsnd_ssi_is_multi_slave(mod, io) \ |
106 | (rsnd_ssi_multi_slaves(io) & (1 << rsnd_mod_id(mod))) | |
fd9adcfd KM |
107 | #define rsnd_ssi_is_run_mods(mod, io) \ |
108 | (rsnd_ssi_run_mods(io) & (1 << rsnd_mod_id(mod))) | |
bb002f92 | 109 | #define rsnd_ssi_can_output_clk(mod) (!__rsnd_ssi_is_pin_sharing(mod)) |
ae5c3223 | 110 | |
7fa72cca KM |
111 | int rsnd_ssi_hdmi_port(struct rsnd_dai_stream *io) |
112 | { | |
113 | struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io); | |
114 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
115 | ||
42991989 | 116 | if (rsnd_flags_has(ssi, RSND_SSI_HDMI0)) |
7fa72cca KM |
117 | return RSND_SSI_HDMI_PORT0; |
118 | ||
42991989 | 119 | if (rsnd_flags_has(ssi, RSND_SSI_HDMI1)) |
7fa72cca KM |
120 | return RSND_SSI_HDMI_PORT1; |
121 | ||
122 | return 0; | |
123 | } | |
124 | ||
b415b4d3 | 125 | int rsnd_ssi_use_busif(struct rsnd_dai_stream *io) |
d9288d0b | 126 | { |
b415b4d3 | 127 | struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io); |
d9288d0b | 128 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
d9288d0b KM |
129 | int use_busif = 0; |
130 | ||
7b466fc6 KM |
131 | if (!rsnd_ssi_is_dma_mode(mod)) |
132 | return 0; | |
133 | ||
42991989 | 134 | if (!(rsnd_flags_has(ssi, RSND_SSI_NO_BUSIF))) |
d9288d0b KM |
135 | use_busif = 1; |
136 | if (rsnd_io_to_mod_src(io)) | |
137 | use_busif = 1; | |
138 | ||
139 | return use_busif; | |
140 | } | |
141 | ||
e10369d8 KM |
142 | static void rsnd_ssi_status_clear(struct rsnd_mod *mod) |
143 | { | |
144 | rsnd_mod_write(mod, SSISR, 0); | |
145 | } | |
146 | ||
147 | static u32 rsnd_ssi_status_get(struct rsnd_mod *mod) | |
148 | { | |
149 | return rsnd_mod_read(mod, SSISR); | |
150 | } | |
151 | ||
ae5c3223 KM |
152 | static void rsnd_ssi_status_check(struct rsnd_mod *mod, |
153 | u32 bit) | |
154 | { | |
155 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); | |
156 | struct device *dev = rsnd_priv_to_dev(priv); | |
157 | u32 status; | |
158 | int i; | |
159 | ||
160 | for (i = 0; i < 1024; i++) { | |
e10369d8 | 161 | status = rsnd_ssi_status_get(mod); |
ae5c3223 KM |
162 | if (status & bit) |
163 | return; | |
164 | ||
165 | udelay(50); | |
166 | } | |
167 | ||
1120dbff KM |
168 | dev_warn(dev, "%s[%d] status check failed\n", |
169 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
ae5c3223 KM |
170 | } |
171 | ||
4f5c634d | 172 | static u32 rsnd_ssi_multi_slaves(struct rsnd_dai_stream *io) |
b4c83b17 KM |
173 | { |
174 | struct rsnd_mod *mod; | |
b4c83b17 KM |
175 | enum rsnd_mod_type types[] = { |
176 | RSND_MOD_SSIM1, | |
177 | RSND_MOD_SSIM2, | |
178 | RSND_MOD_SSIM3, | |
179 | }; | |
180 | int i, mask; | |
181 | ||
b4c83b17 KM |
182 | mask = 0; |
183 | for (i = 0; i < ARRAY_SIZE(types); i++) { | |
184 | mod = rsnd_io_to_mod(io, types[i]); | |
185 | if (!mod) | |
186 | continue; | |
187 | ||
188 | mask |= 1 << rsnd_mod_id(mod); | |
189 | } | |
190 | ||
191 | return mask; | |
192 | } | |
193 | ||
fd9adcfd KM |
194 | static u32 rsnd_ssi_run_mods(struct rsnd_dai_stream *io) |
195 | { | |
196 | struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io); | |
197 | struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io); | |
21781e87 | 198 | u32 mods; |
fd9adcfd | 199 | |
21781e87 KM |
200 | mods = rsnd_ssi_multi_slaves_runtime(io) | |
201 | 1 << rsnd_mod_id(ssi_mod); | |
202 | ||
203 | if (ssi_parent_mod) | |
204 | mods |= 1 << rsnd_mod_id(ssi_parent_mod); | |
205 | ||
206 | return mods; | |
fd9adcfd KM |
207 | } |
208 | ||
4f5c634d KM |
209 | u32 rsnd_ssi_multi_slaves_runtime(struct rsnd_dai_stream *io) |
210 | { | |
eed76bb8 KM |
211 | if (rsnd_runtime_is_ssi_multi(io)) |
212 | return rsnd_ssi_multi_slaves(io); | |
4f5c634d KM |
213 | |
214 | return 0; | |
215 | } | |
216 | ||
947f4eb5 | 217 | unsigned int rsnd_ssi_clk_query(struct rsnd_priv *priv, |
ef4cf5d6 KM |
218 | int param1, int param2, int *idx) |
219 | { | |
220 | int ssi_clk_mul_table[] = { | |
221 | 1, 2, 4, 8, 16, 6, 12, | |
222 | }; | |
223 | int j, ret; | |
947f4eb5 | 224 | unsigned int main_rate; |
ef4cf5d6 KM |
225 | |
226 | for (j = 0; j < ARRAY_SIZE(ssi_clk_mul_table); j++) { | |
227 | ||
228 | /* | |
229 | * It will set SSIWSR.CONT here, but SSICR.CKDV = 000 | |
230 | * with it is not allowed. (SSIWSR.WS_MODE with | |
231 | * SSICR.CKDV = 000 is not allowed either). | |
232 | * Skip it. See SSICR.CKDV | |
233 | */ | |
234 | if (j == 0) | |
235 | continue; | |
236 | ||
237 | /* | |
238 | * this driver is assuming that | |
239 | * system word is 32bit x chan | |
240 | * see rsnd_ssi_init() | |
241 | */ | |
242 | main_rate = 32 * param1 * param2 * ssi_clk_mul_table[j]; | |
243 | ||
244 | ret = rsnd_adg_clk_query(priv, main_rate); | |
245 | if (ret < 0) | |
246 | continue; | |
247 | ||
248 | if (idx) | |
249 | *idx = j; | |
250 | ||
251 | return main_rate; | |
252 | } | |
253 | ||
947f4eb5 | 254 | return 0; |
ef4cf5d6 KM |
255 | } |
256 | ||
26d34b11 | 257 | static int rsnd_ssi_master_clk_start(struct rsnd_mod *mod, |
adcf7d5e | 258 | struct rsnd_dai_stream *io) |
ae5c3223 | 259 | { |
1b13d118 | 260 | struct rsnd_priv *priv = rsnd_io_to_priv(io); |
ae5c3223 | 261 | struct device *dev = rsnd_priv_to_dev(priv); |
e7d850dd | 262 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); |
26d34b11 | 263 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
eed76bb8 | 264 | int chan = rsnd_runtime_channel_for_ssi(io); |
ef4cf5d6 | 265 | int idx, ret; |
ae5c3223 | 266 | unsigned int main_rate; |
cbf1494f KM |
267 | unsigned int rate = rsnd_io_is_play(io) ? |
268 | rsnd_src_get_out_rate(priv, io) : | |
269 | rsnd_src_get_in_rate(priv, io); | |
ae5c3223 | 270 | |
e7d850dd KM |
271 | if (!rsnd_rdai_is_clk_master(rdai)) |
272 | return 0; | |
273 | ||
bb002f92 | 274 | if (!rsnd_ssi_can_output_clk(mod)) |
e7d850dd KM |
275 | return 0; |
276 | ||
b4c83b17 KM |
277 | if (rsnd_ssi_is_multi_slave(mod, io)) |
278 | return 0; | |
279 | ||
e7d850dd KM |
280 | if (ssi->usrcnt > 1) { |
281 | if (ssi->rate != rate) { | |
282 | dev_err(dev, "SSI parent/child should use same rate\n"); | |
283 | return -EINVAL; | |
284 | } | |
285 | ||
286 | return 0; | |
287 | } | |
288 | ||
ef4cf5d6 | 289 | main_rate = rsnd_ssi_clk_query(priv, rate, chan, &idx); |
947f4eb5 | 290 | if (!main_rate) { |
ef4cf5d6 KM |
291 | dev_err(dev, "unsupported clock rate\n"); |
292 | return -EIO; | |
293 | } | |
eae6fff4 | 294 | |
ef4cf5d6 KM |
295 | ret = rsnd_adg_ssi_clk_try_start(mod, main_rate); |
296 | if (ret < 0) | |
297 | return ret; | |
e7d850dd | 298 | |
597b046f KM |
299 | /* |
300 | * SSI clock will be output contiguously | |
301 | * by below settings. | |
302 | * This means, rsnd_ssi_master_clk_start() | |
303 | * and rsnd_ssi_register_setup() are necessary | |
304 | * for SSI parent | |
305 | * | |
306 | * SSICR : FORCE, SCKD, SWSD | |
307 | * SSIWSR : CONT | |
308 | */ | |
ef4cf5d6 KM |
309 | ssi->cr_clk = FORCE | SWL_32 | SCKD | SWSD | CKDV(idx); |
310 | ssi->wsr = CONT; | |
311 | ssi->rate = rate; | |
eae6fff4 | 312 | |
ef4cf5d6 KM |
313 | dev_dbg(dev, "%s[%d] outputs %u Hz\n", |
314 | rsnd_mod_name(mod), | |
315 | rsnd_mod_id(mod), rate); | |
ae5c3223 | 316 | |
ef4cf5d6 | 317 | return 0; |
ae5c3223 KM |
318 | } |
319 | ||
26d34b11 | 320 | static void rsnd_ssi_master_clk_stop(struct rsnd_mod *mod, |
e7d850dd | 321 | struct rsnd_dai_stream *io) |
ae5c3223 | 322 | { |
f708d944 | 323 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); |
26d34b11 | 324 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
3ba84f45 | 325 | |
e7d850dd | 326 | if (!rsnd_rdai_is_clk_master(rdai)) |
ae5c3223 | 327 | return; |
ae5c3223 | 328 | |
bb002f92 | 329 | if (!rsnd_ssi_can_output_clk(mod)) |
e7d850dd | 330 | return; |
ae5c3223 | 331 | |
e7d850dd KM |
332 | if (ssi->usrcnt > 1) |
333 | return; | |
919567d9 | 334 | |
e7d850dd KM |
335 | ssi->cr_clk = 0; |
336 | ssi->rate = 0; | |
ae5c3223 | 337 | |
e7d850dd | 338 | rsnd_adg_ssi_clk_stop(mod); |
ae5c3223 KM |
339 | } |
340 | ||
0dc6bf75 | 341 | static void rsnd_ssi_config_init(struct rsnd_mod *mod, |
840ada3b KM |
342 | struct rsnd_dai_stream *io) |
343 | { | |
344 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); | |
345 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); | |
26d34b11 | 346 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
840ada3b KM |
347 | u32 cr_own; |
348 | u32 cr_mode; | |
186fadc1 | 349 | u32 wsr; |
f98ed119 KM |
350 | int is_tdm; |
351 | ||
bf23c6a3 KM |
352 | if (rsnd_ssi_is_parent(mod, io)) |
353 | return; | |
354 | ||
eed76bb8 | 355 | is_tdm = rsnd_runtime_is_ssi_tdm(io); |
840ada3b KM |
356 | |
357 | /* | |
358 | * always use 32bit system word. | |
359 | * see also rsnd_ssi_master_clk_enable() | |
360 | */ | |
90431eb4 | 361 | cr_own = FORCE | SWL_32; |
840ada3b KM |
362 | |
363 | if (rdai->bit_clk_inv) | |
364 | cr_own |= SCKP; | |
f98ed119 | 365 | if (rdai->frm_clk_inv ^ is_tdm) |
840ada3b KM |
366 | cr_own |= SWSP; |
367 | if (rdai->data_alignment) | |
368 | cr_own |= SDTA; | |
369 | if (rdai->sys_delay) | |
370 | cr_own |= DEL; | |
371 | if (rsnd_io_is_play(io)) | |
372 | cr_own |= TRMD; | |
373 | ||
374 | switch (runtime->sample_bits) { | |
375 | case 16: | |
376 | cr_own |= DWL_16; | |
377 | break; | |
378 | case 32: | |
379 | cr_own |= DWL_24; | |
380 | break; | |
840ada3b KM |
381 | } |
382 | ||
26d34b11 | 383 | if (rsnd_ssi_is_dma_mode(mod)) { |
840ada3b KM |
384 | cr_mode = UIEN | OIEN | /* over/under run */ |
385 | DMEN; /* DMA : enable DMA */ | |
386 | } else { | |
387 | cr_mode = DIEN; /* PIO : enable Data interrupt */ | |
388 | } | |
389 | ||
186fadc1 KM |
390 | /* |
391 | * TDM Extend Mode | |
392 | * see | |
393 | * rsnd_ssiu_init_gen2() | |
394 | */ | |
395 | wsr = ssi->wsr; | |
f98ed119 | 396 | if (is_tdm) { |
186fadc1 KM |
397 | wsr |= WS_MODE; |
398 | cr_own |= CHNL_8; | |
399 | } | |
400 | ||
840ada3b KM |
401 | ssi->cr_own = cr_own; |
402 | ssi->cr_mode = cr_mode; | |
186fadc1 | 403 | ssi->wsr = wsr; |
0dc6bf75 | 404 | } |
840ada3b | 405 | |
0dc6bf75 KM |
406 | static void rsnd_ssi_register_setup(struct rsnd_mod *mod) |
407 | { | |
408 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
409 | ||
410 | rsnd_mod_write(mod, SSIWSR, ssi->wsr); | |
411 | rsnd_mod_write(mod, SSICR, ssi->cr_own | | |
412 | ssi->cr_clk | | |
597b046f KM |
413 | ssi->cr_mode | |
414 | ssi->cr_en); | |
840ada3b KM |
415 | } |
416 | ||
a97a06c7 KM |
417 | static void rsnd_ssi_pointer_init(struct rsnd_mod *mod, |
418 | struct rsnd_dai_stream *io) | |
419 | { | |
420 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
421 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); | |
422 | ||
423 | ssi->byte_pos = 0; | |
424 | ssi->period_pos = 0; | |
425 | ssi->byte_per_period = runtime->period_size * | |
426 | runtime->channels * | |
427 | samples_to_bytes(runtime, 1); | |
428 | ssi->next_period_byte = ssi->byte_per_period; | |
429 | } | |
430 | ||
431 | static int rsnd_ssi_pointer_offset(struct rsnd_mod *mod, | |
432 | struct rsnd_dai_stream *io, | |
433 | int additional) | |
434 | { | |
435 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
436 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); | |
437 | int pos = ssi->byte_pos + additional; | |
438 | ||
439 | pos %= (runtime->periods * ssi->byte_per_period); | |
440 | ||
441 | return pos; | |
442 | } | |
443 | ||
444 | static bool rsnd_ssi_pointer_update(struct rsnd_mod *mod, | |
445 | struct rsnd_dai_stream *io, | |
446 | int byte) | |
447 | { | |
448 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
33f80136 JW |
449 | bool ret = false; |
450 | int byte_pos; | |
a97a06c7 | 451 | |
33f80136 | 452 | byte_pos = ssi->byte_pos + byte; |
a97a06c7 | 453 | |
33f80136 | 454 | if (byte_pos >= ssi->next_period_byte) { |
a97a06c7 KM |
455 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
456 | ||
457 | ssi->period_pos++; | |
458 | ssi->next_period_byte += ssi->byte_per_period; | |
459 | ||
460 | if (ssi->period_pos >= runtime->periods) { | |
33f80136 | 461 | byte_pos = 0; |
a97a06c7 KM |
462 | ssi->period_pos = 0; |
463 | ssi->next_period_byte = ssi->byte_per_period; | |
464 | } | |
465 | ||
33f80136 | 466 | ret = true; |
a97a06c7 KM |
467 | } |
468 | ||
33f80136 JW |
469 | WRITE_ONCE(ssi->byte_pos, byte_pos); |
470 | ||
471 | return ret; | |
a97a06c7 KM |
472 | } |
473 | ||
ae5c3223 KM |
474 | /* |
475 | * SSI mod common functions | |
476 | */ | |
477 | static int rsnd_ssi_init(struct rsnd_mod *mod, | |
2c0fac19 | 478 | struct rsnd_dai_stream *io, |
690602fc | 479 | struct rsnd_priv *priv) |
ae5c3223 KM |
480 | { |
481 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
e7d850dd KM |
482 | int ret; |
483 | ||
fd9adcfd KM |
484 | if (!rsnd_ssi_is_run_mods(mod, io)) |
485 | return 0; | |
486 | ||
a97a06c7 KM |
487 | rsnd_ssi_pointer_init(mod, io); |
488 | ||
e7d850dd KM |
489 | ssi->usrcnt++; |
490 | ||
491 | rsnd_mod_power_on(mod); | |
492 | ||
26d34b11 | 493 | ret = rsnd_ssi_master_clk_start(mod, io); |
e7d850dd KM |
494 | if (ret < 0) |
495 | return ret; | |
496 | ||
bf23c6a3 | 497 | rsnd_ssi_config_init(mod, io); |
ae5c3223 | 498 | |
0dc6bf75 | 499 | rsnd_ssi_register_setup(mod); |
e7d850dd | 500 | |
e7d850dd KM |
501 | /* clear error status */ |
502 | rsnd_ssi_status_clear(mod); | |
503 | ||
ae5c3223 KM |
504 | return 0; |
505 | } | |
506 | ||
507 | static int rsnd_ssi_quit(struct rsnd_mod *mod, | |
2c0fac19 | 508 | struct rsnd_dai_stream *io, |
690602fc | 509 | struct rsnd_priv *priv) |
ae5c3223 KM |
510 | { |
511 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
ae5c3223 KM |
512 | struct device *dev = rsnd_priv_to_dev(priv); |
513 | ||
fd9adcfd KM |
514 | if (!rsnd_ssi_is_run_mods(mod, io)) |
515 | return 0; | |
516 | ||
e5d9cfc6 AH |
517 | if (!ssi->usrcnt) { |
518 | dev_err(dev, "%s[%d] usrcnt error\n", | |
519 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
520 | return -EIO; | |
521 | } | |
e7d850dd | 522 | |
b5b442ab | 523 | if (!rsnd_ssi_is_parent(mod, io)) |
e5d9cfc6 | 524 | ssi->cr_own = 0; |
ae5c3223 | 525 | |
26d34b11 | 526 | rsnd_ssi_master_clk_stop(mod, io); |
e7d850dd KM |
527 | |
528 | rsnd_mod_power_off(mod); | |
529 | ||
530 | ssi->usrcnt--; | |
531 | ||
ae5c3223 KM |
532 | return 0; |
533 | } | |
534 | ||
919567d9 | 535 | static int rsnd_ssi_hw_params(struct rsnd_mod *mod, |
2c0fac19 | 536 | struct rsnd_dai_stream *io, |
919567d9 KM |
537 | struct snd_pcm_substream *substream, |
538 | struct snd_pcm_hw_params *params) | |
539 | { | |
540 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
919567d9 KM |
541 | int chan = params_channels(params); |
542 | ||
543 | /* | |
6bf66b1c KM |
544 | * snd_pcm_ops::hw_params will be called *before* |
545 | * snd_soc_dai_ops::trigger. Thus, ssi->usrcnt is 0 | |
546 | * in 1st call. | |
919567d9 | 547 | */ |
6bf66b1c | 548 | if (ssi->usrcnt) { |
919567d9 | 549 | /* |
6bf66b1c KM |
550 | * Already working. |
551 | * It will happen if SSI has parent/child connection. | |
919567d9 KM |
552 | * it is error if child <-> parent SSI uses |
553 | * different channels. | |
554 | */ | |
555 | if (ssi->chan != chan) | |
556 | return -EIO; | |
557 | } | |
558 | ||
919567d9 | 559 | ssi->chan = chan; |
919567d9 KM |
560 | |
561 | return 0; | |
562 | } | |
563 | ||
6a25c8da KM |
564 | static int rsnd_ssi_start(struct rsnd_mod *mod, |
565 | struct rsnd_dai_stream *io, | |
566 | struct rsnd_priv *priv) | |
e7d850dd | 567 | { |
597b046f KM |
568 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
569 | ||
fd9adcfd KM |
570 | if (!rsnd_ssi_is_run_mods(mod, io)) |
571 | return 0; | |
572 | ||
b4c83b17 KM |
573 | /* |
574 | * EN will be set via SSIU :: SSI_CONTROL | |
575 | * if Multi channel mode | |
576 | */ | |
4f5c634d | 577 | if (rsnd_ssi_multi_slaves_runtime(io)) |
0dc6bf75 | 578 | return 0; |
e7d850dd | 579 | |
597b046f KM |
580 | /* |
581 | * EN is for data output. | |
582 | * SSI parent EN is not needed. | |
583 | */ | |
584 | if (rsnd_ssi_is_parent(mod, io)) | |
585 | return 0; | |
586 | ||
587 | ssi->cr_en = EN; | |
588 | ||
589 | rsnd_mod_write(mod, SSICR, ssi->cr_own | | |
590 | ssi->cr_clk | | |
591 | ssi->cr_mode | | |
592 | ssi->cr_en); | |
e7d850dd KM |
593 | |
594 | return 0; | |
595 | } | |
596 | ||
6a25c8da KM |
597 | static int rsnd_ssi_stop(struct rsnd_mod *mod, |
598 | struct rsnd_dai_stream *io, | |
599 | struct rsnd_priv *priv) | |
e7d850dd | 600 | { |
6a25c8da KM |
601 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
602 | u32 cr; | |
603 | ||
fd9adcfd KM |
604 | if (!rsnd_ssi_is_run_mods(mod, io)) |
605 | return 0; | |
606 | ||
597b046f | 607 | if (rsnd_ssi_is_parent(mod, io)) |
6a25c8da | 608 | return 0; |
e7d850dd | 609 | |
e7d850dd KM |
610 | cr = ssi->cr_own | |
611 | ssi->cr_clk; | |
4e7d606c | 612 | |
ce548931 KM |
613 | /* |
614 | * disable all IRQ, | |
615 | * Playback: Wait all data was sent | |
616 | * Capture: It might not receave data. Do nothing | |
617 | */ | |
618 | if (rsnd_io_is_play(io)) { | |
619 | rsnd_mod_write(mod, SSICR, cr | EN); | |
620 | rsnd_ssi_status_check(mod, DIRQ); | |
621 | } | |
4e7d606c | 622 | |
e7d850dd KM |
623 | /* |
624 | * disable SSI, | |
625 | * and, wait idle state | |
626 | */ | |
627 | rsnd_mod_write(mod, SSICR, cr); /* disabled all */ | |
628 | rsnd_ssi_status_check(mod, IIRQ); | |
4e7d606c | 629 | |
597b046f KM |
630 | ssi->cr_en = 0; |
631 | ||
4e7d606c KM |
632 | return 0; |
633 | } | |
634 | ||
615fb6c7 KM |
635 | static int rsnd_ssi_irq(struct rsnd_mod *mod, |
636 | struct rsnd_dai_stream *io, | |
637 | struct rsnd_priv *priv, | |
638 | int enable) | |
639 | { | |
640 | u32 val = 0; | |
641 | ||
642 | if (rsnd_is_gen1(priv)) | |
643 | return 0; | |
644 | ||
645 | if (rsnd_ssi_is_parent(mod, io)) | |
646 | return 0; | |
647 | ||
fd9adcfd KM |
648 | if (!rsnd_ssi_is_run_mods(mod, io)) |
649 | return 0; | |
650 | ||
615fb6c7 KM |
651 | if (enable) |
652 | val = rsnd_ssi_is_dma_mode(mod) ? 0x0e000000 : 0x0f000000; | |
653 | ||
654 | rsnd_mod_write(mod, SSI_INT_ENABLE, val); | |
655 | ||
656 | return 0; | |
657 | } | |
658 | ||
bfc0cfe6 KM |
659 | static void __rsnd_ssi_interrupt(struct rsnd_mod *mod, |
660 | struct rsnd_dai_stream *io) | |
ae5c3223 | 661 | { |
690602fc | 662 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
765ae7c8 | 663 | int is_dma = rsnd_ssi_is_dma_mode(mod); |
02299d98 | 664 | u32 status; |
75defee0 | 665 | bool elapsed = false; |
6a25c8da | 666 | bool stop = false; |
02299d98 KM |
667 | |
668 | spin_lock(&priv->lock); | |
ae5c3223 | 669 | |
02299d98 | 670 | /* ignore all cases if not working */ |
d5bbe7de | 671 | if (!rsnd_io_is_working(io)) |
02299d98 KM |
672 | goto rsnd_ssi_interrupt_out; |
673 | ||
6a25c8da | 674 | status = rsnd_ssi_status_get(mod); |
4e7d606c KM |
675 | |
676 | /* PIO only */ | |
765ae7c8 | 677 | if (!is_dma && (status & DIRQ)) { |
ae5c3223 KM |
678 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
679 | u32 *buf = (u32 *)(runtime->dma_area + | |
a97a06c7 | 680 | rsnd_ssi_pointer_offset(mod, io, 0)); |
7819a942 KM |
681 | int shift = 0; |
682 | ||
683 | switch (runtime->sample_bits) { | |
684 | case 32: | |
685 | shift = 8; | |
686 | break; | |
687 | } | |
ae5c3223 | 688 | |
ae5c3223 KM |
689 | /* |
690 | * 8/16/32 data can be assesse to TDR/RDR register | |
691 | * directly as 32bit data | |
692 | * see rsnd_ssi_init() | |
693 | */ | |
985a4f6e | 694 | if (rsnd_io_is_play(io)) |
7819a942 | 695 | rsnd_mod_write(mod, SSITDR, (*buf) << shift); |
ae5c3223 | 696 | else |
7819a942 | 697 | *buf = (rsnd_mod_read(mod, SSIRDR) >> shift); |
ae5c3223 | 698 | |
a97a06c7 | 699 | elapsed = rsnd_ssi_pointer_update(mod, io, sizeof(*buf)); |
4e7d606c | 700 | } |
ae5c3223 | 701 | |
12927a8f | 702 | /* DMA only */ |
6a25c8da KM |
703 | if (is_dma && (status & (UIRQ | OIRQ))) |
704 | stop = true; | |
69e32a58 | 705 | |
5342dff2 | 706 | rsnd_ssi_status_clear(mod); |
02299d98 KM |
707 | rsnd_ssi_interrupt_out: |
708 | spin_unlock(&priv->lock); | |
709 | ||
75defee0 KM |
710 | if (elapsed) |
711 | rsnd_dai_period_elapsed(io); | |
6a25c8da KM |
712 | |
713 | if (stop) | |
714 | snd_pcm_stop_xrun(io->substream); | |
715 | ||
bfc0cfe6 KM |
716 | } |
717 | ||
718 | static irqreturn_t rsnd_ssi_interrupt(int irq, void *data) | |
719 | { | |
720 | struct rsnd_mod *mod = data; | |
721 | ||
722 | rsnd_mod_interrupt(mod, __rsnd_ssi_interrupt); | |
75defee0 | 723 | |
4e7d606c | 724 | return IRQ_HANDLED; |
ae5c3223 KM |
725 | } |
726 | ||
6cfad789 KM |
727 | /* |
728 | * SSI PIO | |
729 | */ | |
e7d850dd | 730 | static void rsnd_ssi_parent_attach(struct rsnd_mod *mod, |
098bd891 | 731 | struct rsnd_dai_stream *io) |
e7d850dd | 732 | { |
098bd891 KM |
733 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); |
734 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); | |
735 | ||
e7d850dd KM |
736 | if (!__rsnd_ssi_is_pin_sharing(mod)) |
737 | return; | |
738 | ||
098bd891 KM |
739 | if (!rsnd_rdai_is_clk_master(rdai)) |
740 | return; | |
741 | ||
e7d850dd KM |
742 | switch (rsnd_mod_id(mod)) { |
743 | case 1: | |
744 | case 2: | |
745 | rsnd_dai_connect(rsnd_ssi_mod_get(priv, 0), io, RSND_MOD_SSIP); | |
746 | break; | |
747 | case 4: | |
748 | rsnd_dai_connect(rsnd_ssi_mod_get(priv, 3), io, RSND_MOD_SSIP); | |
749 | break; | |
750 | case 8: | |
751 | rsnd_dai_connect(rsnd_ssi_mod_get(priv, 7), io, RSND_MOD_SSIP); | |
752 | break; | |
753 | } | |
754 | } | |
755 | ||
098bd891 KM |
756 | static int rsnd_ssi_pcm_new(struct rsnd_mod *mod, |
757 | struct rsnd_dai_stream *io, | |
758 | struct snd_soc_pcm_runtime *rtd) | |
759 | { | |
760 | /* | |
761 | * rsnd_rdai_is_clk_master() will be enabled after set_fmt, | |
762 | * and, pcm_new will be called after it. | |
763 | * This function reuse pcm_new at this point. | |
764 | */ | |
765 | rsnd_ssi_parent_attach(mod, io); | |
766 | ||
767 | return 0; | |
768 | } | |
769 | ||
c7f69ab5 KM |
770 | static int rsnd_ssi_common_probe(struct rsnd_mod *mod, |
771 | struct rsnd_dai_stream *io, | |
772 | struct rsnd_priv *priv) | |
ff8f30e6 | 773 | { |
ff8f30e6 KM |
774 | struct device *dev = rsnd_priv_to_dev(priv); |
775 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
ff8f30e6 KM |
776 | int ret; |
777 | ||
b4c83b17 KM |
778 | /* |
779 | * SSIP/SSIU/IRQ are not needed on | |
780 | * SSI Multi slaves | |
781 | */ | |
782 | if (rsnd_ssi_is_multi_slave(mod, io)) | |
783 | return 0; | |
784 | ||
098bd891 KM |
785 | /* |
786 | * It can't judge ssi parent at this point | |
787 | * see rsnd_ssi_pcm_new() | |
788 | */ | |
e7d850dd | 789 | |
c7f69ab5 KM |
790 | ret = rsnd_ssiu_attach(io, mod); |
791 | if (ret < 0) | |
792 | return ret; | |
793 | ||
701172dc KM |
794 | /* |
795 | * SSI might be called again as PIO fallback | |
796 | * It is easy to manual handling for IRQ request/free | |
b6e58fca KM |
797 | * |
798 | * OTOH, this function might be called many times if platform is | |
799 | * using MIX. It needs xxx_attach() many times on xxx_probe(). | |
800 | * Because of it, we can't control .probe/.remove calling count by | |
801 | * mod->status. | |
802 | * But it don't need to call request_irq() many times. | |
803 | * Let's control it by RSND_SSI_PROBED flag. | |
701172dc | 804 | */ |
42991989 | 805 | if (!rsnd_flags_has(ssi, RSND_SSI_PROBED)) { |
b6e58fca KM |
806 | ret = request_irq(ssi->irq, |
807 | rsnd_ssi_interrupt, | |
808 | IRQF_SHARED, | |
809 | dev_name(dev), mod); | |
810 | ||
42991989 | 811 | rsnd_flags_set(ssi, RSND_SSI_PROBED); |
b6e58fca | 812 | } |
8aefda50 | 813 | |
ff8f30e6 KM |
814 | return ret; |
815 | } | |
816 | ||
213691c7 KM |
817 | static int rsnd_ssi_common_remove(struct rsnd_mod *mod, |
818 | struct rsnd_dai_stream *io, | |
819 | struct rsnd_priv *priv) | |
820 | { | |
821 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
822 | struct rsnd_mod *pure_ssi_mod = rsnd_io_to_mod_ssi(io); | |
823 | ||
824 | /* Do nothing if non SSI (= SSI parent, multi SSI) mod */ | |
825 | if (pure_ssi_mod != mod) | |
826 | return 0; | |
827 | ||
828 | /* PIO will request IRQ again */ | |
42991989 | 829 | if (rsnd_flags_has(ssi, RSND_SSI_PROBED)) { |
b6e58fca KM |
830 | free_irq(ssi->irq, mod); |
831 | ||
42991989 | 832 | rsnd_flags_del(ssi, RSND_SSI_PROBED); |
b6e58fca | 833 | } |
213691c7 KM |
834 | |
835 | return 0; | |
836 | } | |
837 | ||
07b7acb5 KM |
838 | static int rsnd_ssi_pointer(struct rsnd_mod *mod, |
839 | struct rsnd_dai_stream *io, | |
840 | snd_pcm_uframes_t *pointer) | |
841 | { | |
a97a06c7 | 842 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
07b7acb5 KM |
843 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
844 | ||
33f80136 | 845 | *pointer = bytes_to_frames(runtime, READ_ONCE(ssi->byte_pos)); |
07b7acb5 KM |
846 | |
847 | return 0; | |
848 | } | |
849 | ||
ae5c3223 | 850 | static struct rsnd_mod_ops rsnd_ssi_pio_ops = { |
8aefda50 | 851 | .name = SSI_NAME, |
c7f69ab5 | 852 | .probe = rsnd_ssi_common_probe, |
213691c7 | 853 | .remove = rsnd_ssi_common_remove, |
ae5c3223 KM |
854 | .init = rsnd_ssi_init, |
855 | .quit = rsnd_ssi_quit, | |
49229850 KM |
856 | .start = rsnd_ssi_start, |
857 | .stop = rsnd_ssi_stop, | |
b5b442ab | 858 | .irq = rsnd_ssi_irq, |
07b7acb5 | 859 | .pointer= rsnd_ssi_pointer, |
098bd891 | 860 | .pcm_new = rsnd_ssi_pcm_new, |
919567d9 | 861 | .hw_params = rsnd_ssi_hw_params, |
ae5c3223 KM |
862 | }; |
863 | ||
ff8f30e6 | 864 | static int rsnd_ssi_dma_probe(struct rsnd_mod *mod, |
2c0fac19 | 865 | struct rsnd_dai_stream *io, |
690602fc | 866 | struct rsnd_priv *priv) |
ff8f30e6 | 867 | { |
ff8f30e6 | 868 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
ff8f30e6 KM |
869 | int ret; |
870 | ||
b4c83b17 KM |
871 | /* |
872 | * SSIP/SSIU/IRQ/DMA are not needed on | |
873 | * SSI Multi slaves | |
874 | */ | |
875 | if (rsnd_ssi_is_multi_slave(mod, io)) | |
876 | return 0; | |
877 | ||
c7f69ab5 | 878 | ret = rsnd_ssi_common_probe(mod, io, priv); |
4e7d606c | 879 | if (ret) |
b543b52a | 880 | return ret; |
4e7d606c | 881 | |
355cb84f | 882 | /* SSI probe might be called many times in MUX multi path */ |
b99305d2 | 883 | ret = rsnd_dma_attach(io, mod, &ssi->dma); |
8aefda50 | 884 | |
ff8f30e6 KM |
885 | return ret; |
886 | } | |
887 | ||
97463e19 | 888 | static int rsnd_ssi_fallback(struct rsnd_mod *mod, |
2c0fac19 | 889 | struct rsnd_dai_stream *io, |
690602fc | 890 | struct rsnd_priv *priv) |
ff8f30e6 | 891 | { |
d3a76823 KM |
892 | struct device *dev = rsnd_priv_to_dev(priv); |
893 | ||
d3a76823 KM |
894 | /* |
895 | * fallback to PIO | |
896 | * | |
897 | * SSI .probe might be called again. | |
898 | * see | |
899 | * rsnd_rdai_continuance_probe() | |
900 | */ | |
901 | mod->ops = &rsnd_ssi_pio_ops; | |
902 | ||
903 | dev_info(dev, "%s[%d] fallback to PIO mode\n", | |
904 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
905 | ||
ff8f30e6 KM |
906 | return 0; |
907 | } | |
908 | ||
9b99e9a7 KM |
909 | static struct dma_chan *rsnd_ssi_dma_req(struct rsnd_dai_stream *io, |
910 | struct rsnd_mod *mod) | |
d9288d0b | 911 | { |
72adc61f | 912 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
72adc61f KM |
913 | int is_play = rsnd_io_is_play(io); |
914 | char *name; | |
915 | ||
b415b4d3 | 916 | if (rsnd_ssi_use_busif(io)) |
72adc61f KM |
917 | name = is_play ? "rxu" : "txu"; |
918 | else | |
919 | name = is_play ? "rx" : "tx"; | |
920 | ||
921 | return rsnd_dma_request_channel(rsnd_ssi_of_node(priv), | |
922 | mod, name); | |
d9288d0b KM |
923 | } |
924 | ||
849fc82a | 925 | static struct rsnd_mod_ops rsnd_ssi_dma_ops = { |
8aefda50 | 926 | .name = SSI_NAME, |
72adc61f | 927 | .dma_req = rsnd_ssi_dma_req, |
ff8f30e6 | 928 | .probe = rsnd_ssi_dma_probe, |
213691c7 | 929 | .remove = rsnd_ssi_common_remove, |
849fc82a KM |
930 | .init = rsnd_ssi_init, |
931 | .quit = rsnd_ssi_quit, | |
497debaa KM |
932 | .start = rsnd_ssi_start, |
933 | .stop = rsnd_ssi_stop, | |
c8e969a8 | 934 | .irq = rsnd_ssi_irq, |
098bd891 | 935 | .pcm_new = rsnd_ssi_pcm_new, |
97463e19 | 936 | .fallback = rsnd_ssi_fallback, |
919567d9 | 937 | .hw_params = rsnd_ssi_hw_params, |
849fc82a KM |
938 | }; |
939 | ||
05795411 KM |
940 | int rsnd_ssi_is_dma_mode(struct rsnd_mod *mod) |
941 | { | |
942 | return mod->ops == &rsnd_ssi_dma_ops; | |
943 | } | |
944 | ||
945 | ||
ae5c3223 KM |
946 | /* |
947 | * ssi mod function | |
948 | */ | |
b4c83b17 KM |
949 | static void rsnd_ssi_connect(struct rsnd_mod *mod, |
950 | struct rsnd_dai_stream *io) | |
951 | { | |
952 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); | |
953 | enum rsnd_mod_type types[] = { | |
954 | RSND_MOD_SSI, | |
955 | RSND_MOD_SSIM1, | |
956 | RSND_MOD_SSIM2, | |
957 | RSND_MOD_SSIM3, | |
958 | }; | |
959 | enum rsnd_mod_type type; | |
960 | int i; | |
961 | ||
962 | /* try SSI -> SSIM1 -> SSIM2 -> SSIM3 */ | |
963 | for (i = 0; i < ARRAY_SIZE(types); i++) { | |
964 | type = types[i]; | |
965 | if (!rsnd_io_to_mod(io, type)) { | |
966 | rsnd_dai_connect(mod, io, type); | |
1ff9593d KM |
967 | rsnd_rdai_channels_set(rdai, (i + 1) * 2); |
968 | rsnd_rdai_ssi_lane_set(rdai, (i + 1)); | |
b4c83b17 KM |
969 | return; |
970 | } | |
971 | } | |
972 | } | |
973 | ||
974 | void rsnd_parse_connect_ssi(struct rsnd_dai *rdai, | |
975 | struct device_node *playback, | |
976 | struct device_node *capture) | |
977 | { | |
978 | struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); | |
979 | struct device_node *node; | |
980 | struct device_node *np; | |
981 | struct rsnd_mod *mod; | |
982 | int i; | |
983 | ||
984 | node = rsnd_ssi_of_node(priv); | |
985 | if (!node) | |
986 | return; | |
987 | ||
988 | i = 0; | |
989 | for_each_child_of_node(node, np) { | |
990 | mod = rsnd_ssi_mod_get(priv, i); | |
991 | if (np == playback) | |
992 | rsnd_ssi_connect(mod, &rdai->playback); | |
993 | if (np == capture) | |
994 | rsnd_ssi_connect(mod, &rdai->capture); | |
995 | i++; | |
996 | } | |
997 | ||
998 | of_node_put(node); | |
999 | } | |
1000 | ||
7fa72cca KM |
1001 | static void __rsnd_ssi_parse_hdmi_connection(struct rsnd_priv *priv, |
1002 | struct rsnd_dai_stream *io, | |
1003 | struct device_node *remote_ep) | |
1004 | { | |
1005 | struct device *dev = rsnd_priv_to_dev(priv); | |
1006 | struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io); | |
1007 | struct rsnd_ssi *ssi; | |
1008 | ||
1009 | if (!mod) | |
1010 | return; | |
1011 | ||
1012 | ssi = rsnd_mod_to_ssi(mod); | |
1013 | ||
1014 | if (strstr(remote_ep->full_name, "hdmi0")) { | |
42991989 | 1015 | rsnd_flags_set(ssi, RSND_SSI_HDMI0); |
7fa72cca KM |
1016 | dev_dbg(dev, "%s[%d] connected to HDMI0\n", |
1017 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
1018 | } | |
1019 | ||
1020 | if (strstr(remote_ep->full_name, "hdmi1")) { | |
42991989 | 1021 | rsnd_flags_set(ssi, RSND_SSI_HDMI1); |
7fa72cca KM |
1022 | dev_dbg(dev, "%s[%d] connected to HDMI1\n", |
1023 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
1024 | } | |
1025 | } | |
1026 | ||
1027 | void rsnd_ssi_parse_hdmi_connection(struct rsnd_priv *priv, | |
1028 | struct device_node *endpoint, | |
1029 | int dai_i) | |
1030 | { | |
1031 | struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i); | |
1032 | struct device_node *remote_ep; | |
1033 | ||
1034 | remote_ep = of_graph_get_remote_endpoint(endpoint); | |
1035 | if (!remote_ep) | |
1036 | return; | |
1037 | ||
1038 | __rsnd_ssi_parse_hdmi_connection(priv, &rdai->playback, remote_ep); | |
1039 | __rsnd_ssi_parse_hdmi_connection(priv, &rdai->capture, remote_ep); | |
1040 | } | |
1041 | ||
ae5c3223 KM |
1042 | struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id) |
1043 | { | |
8b14719b TI |
1044 | if (WARN_ON(id < 0 || id >= rsnd_ssi_nr(priv))) |
1045 | id = 0; | |
ae5c3223 | 1046 | |
02534f2f | 1047 | return rsnd_mod_get(rsnd_ssi_get(priv, id)); |
ae5c3223 KM |
1048 | } |
1049 | ||
b415b4d3 | 1050 | int __rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod) |
7b5ce975 KM |
1051 | { |
1052 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
1053 | ||
42991989 | 1054 | return !!(rsnd_flags_has(ssi, RSND_SSI_CLK_PIN_SHARE)); |
7b5ce975 KM |
1055 | } |
1056 | ||
5ba17b42 KM |
1057 | static u32 *rsnd_ssi_get_status(struct rsnd_dai_stream *io, |
1058 | struct rsnd_mod *mod, | |
1059 | enum rsnd_mod_type type) | |
1060 | { | |
1061 | /* | |
1062 | * SSIP (= SSI parent) needs to be special, otherwise, | |
1063 | * 2nd SSI might doesn't start. see also rsnd_mod_call() | |
1064 | * | |
1065 | * We can't include parent SSI status on SSI, because we don't know | |
1066 | * how many SSI requests parent SSI. Thus, it is localed on "io" now. | |
1067 | * ex) trouble case | |
1068 | * Playback: SSI0 | |
1069 | * Capture : SSI1 (needs SSI0) | |
1070 | * | |
1071 | * 1) start Capture -> SSI0/SSI1 are started. | |
1072 | * 2) start Playback -> SSI0 doesn't work, because it is already | |
1073 | * marked as "started" on 1) | |
1074 | * | |
1075 | * OTOH, using each mod's status is good for MUX case. | |
1076 | * It doesn't need to start in 2nd start | |
1077 | * ex) | |
1078 | * IO-0: SRC0 -> CTU1 -+-> MUX -> DVC -> SSIU -> SSI0 | |
1079 | * | | |
1080 | * IO-1: SRC1 -> CTU2 -+ | |
1081 | * | |
1082 | * 1) start IO-0 -> start SSI0 | |
1083 | * 2) start IO-1 -> SSI0 doesn't need to start, because it is | |
1084 | * already started on 1) | |
1085 | */ | |
1086 | if (type == RSND_MOD_SSIP) | |
1087 | return &io->parent_ssi_status; | |
1088 | ||
1089 | return rsnd_mod_get_status(io, mod, type); | |
1090 | } | |
1091 | ||
2ea6b074 | 1092 | int rsnd_ssi_probe(struct rsnd_priv *priv) |
ae5c3223 | 1093 | { |
02534f2f KM |
1094 | struct device_node *node; |
1095 | struct device_node *np; | |
ae5c3223 KM |
1096 | struct device *dev = rsnd_priv_to_dev(priv); |
1097 | struct rsnd_mod_ops *ops; | |
1098 | struct clk *clk; | |
ae5c3223 KM |
1099 | struct rsnd_ssi *ssi; |
1100 | char name[RSND_SSI_NAME_SIZE]; | |
2f78dd7f | 1101 | int i, nr, ret; |
ae5c3223 | 1102 | |
02534f2f KM |
1103 | node = rsnd_ssi_of_node(priv); |
1104 | if (!node) | |
1105 | return -EINVAL; | |
1106 | ||
1107 | nr = of_get_child_count(node); | |
1108 | if (!nr) { | |
1109 | ret = -EINVAL; | |
1110 | goto rsnd_ssi_probe_done; | |
1111 | } | |
90e8e50f | 1112 | |
dd27d808 | 1113 | ssi = devm_kzalloc(dev, sizeof(*ssi) * nr, GFP_KERNEL); |
02534f2f KM |
1114 | if (!ssi) { |
1115 | ret = -ENOMEM; | |
1116 | goto rsnd_ssi_probe_done; | |
1117 | } | |
ae5c3223 | 1118 | |
dd27d808 KM |
1119 | priv->ssi = ssi; |
1120 | priv->ssi_nr = nr; | |
ae5c3223 | 1121 | |
02534f2f KM |
1122 | i = 0; |
1123 | for_each_child_of_node(node, np) { | |
9e9e95df KM |
1124 | if (!of_device_is_available(np)) |
1125 | goto skip; | |
1126 | ||
02534f2f | 1127 | ssi = rsnd_ssi_get(priv, i); |
ae5c3223 | 1128 | |
8aefda50 KM |
1129 | snprintf(name, RSND_SSI_NAME_SIZE, "%s.%d", |
1130 | SSI_NAME, i); | |
ae5c3223 | 1131 | |
60dbb4f1 | 1132 | clk = devm_clk_get(dev, name); |
02534f2f KM |
1133 | if (IS_ERR(clk)) { |
1134 | ret = PTR_ERR(clk); | |
53ba2aa3 | 1135 | of_node_put(np); |
02534f2f KM |
1136 | goto rsnd_ssi_probe_done; |
1137 | } | |
ae5c3223 | 1138 | |
02534f2f | 1139 | if (of_get_property(np, "shared-pin", NULL)) |
42991989 | 1140 | rsnd_flags_set(ssi, RSND_SSI_CLK_PIN_SHARE); |
02534f2f KM |
1141 | |
1142 | if (of_get_property(np, "no-busif", NULL)) | |
42991989 | 1143 | rsnd_flags_set(ssi, RSND_SSI_NO_BUSIF); |
02534f2f KM |
1144 | |
1145 | ssi->irq = irq_of_parse_and_map(np, 0); | |
1146 | if (!ssi->irq) { | |
1147 | ret = -EINVAL; | |
53ba2aa3 | 1148 | of_node_put(np); |
02534f2f KM |
1149 | goto rsnd_ssi_probe_done; |
1150 | } | |
ae5c3223 | 1151 | |
51930295 | 1152 | if (of_property_read_bool(np, "pio-transfer")) |
ff8f30e6 | 1153 | ops = &rsnd_ssi_pio_ops; |
02534f2f KM |
1154 | else |
1155 | ops = &rsnd_ssi_dma_ops; | |
ae5c3223 | 1156 | |
b76e218a | 1157 | ret = rsnd_mod_init(priv, rsnd_mod_get(ssi), ops, clk, |
5ba17b42 | 1158 | rsnd_ssi_get_status, RSND_MOD_SSI, i); |
53ba2aa3 JL |
1159 | if (ret) { |
1160 | of_node_put(np); | |
02534f2f | 1161 | goto rsnd_ssi_probe_done; |
53ba2aa3 | 1162 | } |
9e9e95df | 1163 | skip: |
02534f2f | 1164 | i++; |
ae5c3223 KM |
1165 | } |
1166 | ||
02534f2f KM |
1167 | ret = 0; |
1168 | ||
1169 | rsnd_ssi_probe_done: | |
1170 | of_node_put(node); | |
1171 | ||
1172 | return ret; | |
ae5c3223 | 1173 | } |
2f78dd7f | 1174 | |
2ea6b074 | 1175 | void rsnd_ssi_remove(struct rsnd_priv *priv) |
2f78dd7f KM |
1176 | { |
1177 | struct rsnd_ssi *ssi; | |
1178 | int i; | |
1179 | ||
1180 | for_each_rsnd_ssi(ssi, priv, i) { | |
b76e218a | 1181 | rsnd_mod_quit(rsnd_mod_get(ssi)); |
2f78dd7f KM |
1182 | } |
1183 | } |