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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 | */ | |
14 | #include <linux/delay.h> | |
15 | #include "rsnd.h" | |
16 | #define RSND_SSI_NAME_SIZE 16 | |
17 | ||
18 | /* | |
19 | * SSICR | |
20 | */ | |
21 | #define FORCE (1 << 31) /* Fixed */ | |
849fc82a | 22 | #define DMEN (1 << 28) /* DMA Enable */ |
ae5c3223 KM |
23 | #define UIEN (1 << 27) /* Underflow Interrupt Enable */ |
24 | #define OIEN (1 << 26) /* Overflow Interrupt Enable */ | |
25 | #define IIEN (1 << 25) /* Idle Mode Interrupt Enable */ | |
26 | #define DIEN (1 << 24) /* Data Interrupt Enable */ | |
27 | ||
28 | #define DWL_8 (0 << 19) /* Data Word Length */ | |
29 | #define DWL_16 (1 << 19) /* Data Word Length */ | |
30 | #define DWL_18 (2 << 19) /* Data Word Length */ | |
31 | #define DWL_20 (3 << 19) /* Data Word Length */ | |
32 | #define DWL_22 (4 << 19) /* Data Word Length */ | |
33 | #define DWL_24 (5 << 19) /* Data Word Length */ | |
34 | #define DWL_32 (6 << 19) /* Data Word Length */ | |
35 | ||
36 | #define SWL_32 (3 << 16) /* R/W System Word Length */ | |
37 | #define SCKD (1 << 15) /* Serial Bit Clock Direction */ | |
38 | #define SWSD (1 << 14) /* Serial WS Direction */ | |
39 | #define SCKP (1 << 13) /* Serial Bit Clock Polarity */ | |
40 | #define SWSP (1 << 12) /* Serial WS Polarity */ | |
41 | #define SDTA (1 << 10) /* Serial Data Alignment */ | |
42 | #define DEL (1 << 8) /* Serial Data Delay */ | |
43 | #define CKDV(v) (v << 4) /* Serial Clock Division Ratio */ | |
44 | #define TRMD (1 << 1) /* Transmit/Receive Mode Select */ | |
45 | #define EN (1 << 0) /* SSI Module Enable */ | |
46 | ||
47 | /* | |
48 | * SSISR | |
49 | */ | |
50 | #define UIRQ (1 << 27) /* Underflow Error Interrupt Status */ | |
51 | #define OIRQ (1 << 26) /* Overflow Error Interrupt Status */ | |
52 | #define IIRQ (1 << 25) /* Idle Mode Interrupt Status */ | |
53 | #define DIRQ (1 << 24) /* Data Interrupt Status Flag */ | |
54 | ||
849fc82a KM |
55 | /* |
56 | * SSIWSR | |
57 | */ | |
58 | #define CONT (1 << 8) /* WS Continue Function */ | |
59 | ||
ae5c3223 KM |
60 | struct rsnd_ssi { |
61 | struct clk *clk; | |
62 | struct rsnd_ssi_platform_info *info; /* rcar_snd.h */ | |
63 | struct rsnd_ssi *parent; | |
64 | struct rsnd_mod mod; | |
65 | ||
66 | struct rsnd_dai *rdai; | |
ae5c3223 KM |
67 | u32 cr_own; |
68 | u32 cr_clk; | |
69 | u32 cr_etc; | |
70 | int err; | |
71 | unsigned int usrcnt; | |
72 | unsigned int rate; | |
73 | }; | |
74 | ||
ae5c3223 KM |
75 | #define for_each_rsnd_ssi(pos, priv, i) \ |
76 | for (i = 0; \ | |
77 | (i < rsnd_ssi_nr(priv)) && \ | |
dd27d808 | 78 | ((pos) = ((struct rsnd_ssi *)(priv)->ssi + i)); \ |
ae5c3223 KM |
79 | i++) |
80 | ||
dd27d808 | 81 | #define rsnd_ssi_nr(priv) ((priv)->ssi_nr) |
ae5c3223 | 82 | #define rsnd_mod_to_ssi(_mod) container_of((_mod), struct rsnd_ssi, mod) |
849fc82a KM |
83 | #define rsnd_dma_to_ssi(dma) rsnd_mod_to_ssi(rsnd_dma_to_mod(dma)) |
84 | #define rsnd_ssi_pio_available(ssi) ((ssi)->info->pio_irq > 0) | |
85 | #define rsnd_ssi_dma_available(ssi) \ | |
86 | rsnd_dma_available(rsnd_mod_to_dma(&(ssi)->mod)) | |
ae5c3223 | 87 | #define rsnd_ssi_clk_from_parent(ssi) ((ssi)->parent) |
ae5c3223 | 88 | #define rsnd_ssi_mode_flags(p) ((p)->info->flags) |
4b4dab82 | 89 | #define rsnd_ssi_dai_id(ssi) ((ssi)->info->dai_id) |
ae5c3223 | 90 | |
ae5c3223 KM |
91 | static void rsnd_ssi_status_check(struct rsnd_mod *mod, |
92 | u32 bit) | |
93 | { | |
94 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); | |
95 | struct device *dev = rsnd_priv_to_dev(priv); | |
96 | u32 status; | |
97 | int i; | |
98 | ||
99 | for (i = 0; i < 1024; i++) { | |
100 | status = rsnd_mod_read(mod, SSISR); | |
101 | if (status & bit) | |
102 | return; | |
103 | ||
104 | udelay(50); | |
105 | } | |
106 | ||
107 | dev_warn(dev, "status check failed\n"); | |
108 | } | |
109 | ||
110 | static int rsnd_ssi_master_clk_start(struct rsnd_ssi *ssi, | |
adcf7d5e | 111 | struct rsnd_dai_stream *io) |
ae5c3223 KM |
112 | { |
113 | struct rsnd_priv *priv = rsnd_mod_to_priv(&ssi->mod); | |
adcf7d5e | 114 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
ae5c3223 KM |
115 | struct device *dev = rsnd_priv_to_dev(priv); |
116 | int i, j, ret; | |
117 | int adg_clk_div_table[] = { | |
118 | 1, 6, /* see adg.c */ | |
119 | }; | |
120 | int ssi_clk_mul_table[] = { | |
121 | 1, 2, 4, 8, 16, 6, 12, | |
122 | }; | |
123 | unsigned int main_rate; | |
ba9c949f | 124 | unsigned int rate = rsnd_src_get_ssi_rate(priv, io, runtime); |
ae5c3223 KM |
125 | |
126 | /* | |
127 | * Find best clock, and try to start ADG | |
128 | */ | |
129 | for (i = 0; i < ARRAY_SIZE(adg_clk_div_table); i++) { | |
130 | for (j = 0; j < ARRAY_SIZE(ssi_clk_mul_table); j++) { | |
131 | ||
132 | /* | |
133 | * this driver is assuming that | |
134 | * system word is 64fs (= 2 x 32bit) | |
729aca51 | 135 | * see rsnd_ssi_init() |
ae5c3223 KM |
136 | */ |
137 | main_rate = rate / adg_clk_div_table[i] | |
138 | * 32 * 2 * ssi_clk_mul_table[j]; | |
139 | ||
140 | ret = rsnd_adg_ssi_clk_try_start(&ssi->mod, main_rate); | |
141 | if (0 == ret) { | |
142 | ssi->rate = rate; | |
143 | ssi->cr_clk = FORCE | SWL_32 | | |
144 | SCKD | SWSD | CKDV(j); | |
145 | ||
146 | dev_dbg(dev, "ssi%d outputs %u Hz\n", | |
147 | rsnd_mod_id(&ssi->mod), rate); | |
148 | ||
149 | return 0; | |
150 | } | |
151 | } | |
152 | } | |
153 | ||
154 | dev_err(dev, "unsupported clock rate\n"); | |
155 | return -EIO; | |
156 | } | |
157 | ||
158 | static void rsnd_ssi_master_clk_stop(struct rsnd_ssi *ssi) | |
159 | { | |
160 | ssi->rate = 0; | |
161 | ssi->cr_clk = 0; | |
162 | rsnd_adg_ssi_clk_stop(&ssi->mod); | |
163 | } | |
164 | ||
165 | static void rsnd_ssi_hw_start(struct rsnd_ssi *ssi, | |
166 | struct rsnd_dai *rdai, | |
167 | struct rsnd_dai_stream *io) | |
168 | { | |
169 | struct rsnd_priv *priv = rsnd_mod_to_priv(&ssi->mod); | |
170 | struct device *dev = rsnd_priv_to_dev(priv); | |
171 | u32 cr; | |
172 | ||
173 | if (0 == ssi->usrcnt) { | |
174 | clk_enable(ssi->clk); | |
175 | ||
e779a20d | 176 | if (rsnd_dai_is_clk_master(rdai)) { |
ae5c3223 KM |
177 | if (rsnd_ssi_clk_from_parent(ssi)) |
178 | rsnd_ssi_hw_start(ssi->parent, rdai, io); | |
179 | else | |
adcf7d5e | 180 | rsnd_ssi_master_clk_start(ssi, io); |
ae5c3223 KM |
181 | } |
182 | } | |
183 | ||
184 | cr = ssi->cr_own | | |
185 | ssi->cr_clk | | |
186 | ssi->cr_etc | | |
187 | EN; | |
188 | ||
189 | rsnd_mod_write(&ssi->mod, SSICR, cr); | |
190 | ||
191 | ssi->usrcnt++; | |
192 | ||
193 | dev_dbg(dev, "ssi%d hw started\n", rsnd_mod_id(&ssi->mod)); | |
194 | } | |
195 | ||
196 | static void rsnd_ssi_hw_stop(struct rsnd_ssi *ssi, | |
197 | struct rsnd_dai *rdai) | |
198 | { | |
199 | struct rsnd_priv *priv = rsnd_mod_to_priv(&ssi->mod); | |
200 | struct device *dev = rsnd_priv_to_dev(priv); | |
201 | u32 cr; | |
202 | ||
203 | if (0 == ssi->usrcnt) /* stop might be called without start */ | |
204 | return; | |
205 | ||
206 | ssi->usrcnt--; | |
207 | ||
208 | if (0 == ssi->usrcnt) { | |
209 | /* | |
210 | * disable all IRQ, | |
211 | * and, wait all data was sent | |
212 | */ | |
213 | cr = ssi->cr_own | | |
214 | ssi->cr_clk; | |
215 | ||
216 | rsnd_mod_write(&ssi->mod, SSICR, cr | EN); | |
217 | rsnd_ssi_status_check(&ssi->mod, DIRQ); | |
218 | ||
219 | /* | |
220 | * disable SSI, | |
221 | * and, wait idle state | |
222 | */ | |
223 | rsnd_mod_write(&ssi->mod, SSICR, cr); /* disabled all */ | |
224 | rsnd_ssi_status_check(&ssi->mod, IIRQ); | |
225 | ||
e779a20d | 226 | if (rsnd_dai_is_clk_master(rdai)) { |
ae5c3223 KM |
227 | if (rsnd_ssi_clk_from_parent(ssi)) |
228 | rsnd_ssi_hw_stop(ssi->parent, rdai); | |
229 | else | |
230 | rsnd_ssi_master_clk_stop(ssi); | |
231 | } | |
232 | ||
233 | clk_disable(ssi->clk); | |
234 | } | |
235 | ||
236 | dev_dbg(dev, "ssi%d hw stopped\n", rsnd_mod_id(&ssi->mod)); | |
237 | } | |
238 | ||
239 | /* | |
240 | * SSI mod common functions | |
241 | */ | |
242 | static int rsnd_ssi_init(struct rsnd_mod *mod, | |
243 | struct rsnd_dai *rdai, | |
244 | struct rsnd_dai_stream *io) | |
245 | { | |
246 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
ae5c3223 KM |
247 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
248 | u32 cr; | |
249 | ||
250 | cr = FORCE; | |
251 | ||
252 | /* | |
253 | * always use 32bit system word for easy clock calculation. | |
254 | * see also rsnd_ssi_master_clk_enable() | |
255 | */ | |
256 | cr |= SWL_32; | |
257 | ||
258 | /* | |
259 | * init clock settings for SSICR | |
260 | */ | |
261 | switch (runtime->sample_bits) { | |
262 | case 16: | |
263 | cr |= DWL_16; | |
264 | break; | |
265 | case 32: | |
266 | cr |= DWL_24; | |
267 | break; | |
268 | default: | |
269 | return -EIO; | |
270 | } | |
271 | ||
272 | if (rdai->bit_clk_inv) | |
273 | cr |= SCKP; | |
274 | if (rdai->frm_clk_inv) | |
275 | cr |= SWSP; | |
276 | if (rdai->data_alignment) | |
277 | cr |= SDTA; | |
278 | if (rdai->sys_delay) | |
279 | cr |= DEL; | |
280 | if (rsnd_dai_is_play(rdai, io)) | |
281 | cr |= TRMD; | |
282 | ||
283 | /* | |
284 | * set ssi parameter | |
285 | */ | |
286 | ssi->rdai = rdai; | |
ae5c3223 KM |
287 | ssi->cr_own = cr; |
288 | ssi->err = -1; /* ignore 1st error */ | |
289 | ||
ba9c949f | 290 | rsnd_src_ssi_mode_init(mod, rdai, io); |
221bf523 | 291 | |
ae5c3223 KM |
292 | return 0; |
293 | } | |
294 | ||
295 | static int rsnd_ssi_quit(struct rsnd_mod *mod, | |
296 | struct rsnd_dai *rdai, | |
297 | struct rsnd_dai_stream *io) | |
298 | { | |
299 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
300 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); | |
301 | struct device *dev = rsnd_priv_to_dev(priv); | |
302 | ||
ae5c3223 KM |
303 | if (ssi->err > 0) |
304 | dev_warn(dev, "ssi under/over flow err = %d\n", ssi->err); | |
305 | ||
306 | ssi->rdai = NULL; | |
ae5c3223 KM |
307 | ssi->cr_own = 0; |
308 | ssi->err = 0; | |
309 | ||
310 | return 0; | |
311 | } | |
312 | ||
313 | static void rsnd_ssi_record_error(struct rsnd_ssi *ssi, u32 status) | |
314 | { | |
315 | /* under/over flow error */ | |
316 | if (status & (UIRQ | OIRQ)) { | |
317 | ssi->err++; | |
318 | ||
319 | /* clear error status */ | |
320 | rsnd_mod_write(&ssi->mod, SSISR, 0); | |
321 | } | |
322 | } | |
323 | ||
324 | /* | |
325 | * SSI PIO | |
326 | */ | |
327 | static irqreturn_t rsnd_ssi_pio_interrupt(int irq, void *data) | |
328 | { | |
329 | struct rsnd_ssi *ssi = data; | |
4686a0ad KM |
330 | struct rsnd_mod *mod = &ssi->mod; |
331 | struct rsnd_dai_stream *io = rsnd_mod_to_io(mod); | |
332 | u32 status = rsnd_mod_read(mod, SSISR); | |
ae5c3223 KM |
333 | irqreturn_t ret = IRQ_NONE; |
334 | ||
335 | if (io && (status & DIRQ)) { | |
336 | struct rsnd_dai *rdai = ssi->rdai; | |
337 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); | |
338 | u32 *buf = (u32 *)(runtime->dma_area + | |
339 | rsnd_dai_pointer_offset(io, 0)); | |
340 | ||
341 | rsnd_ssi_record_error(ssi, status); | |
342 | ||
343 | /* | |
344 | * 8/16/32 data can be assesse to TDR/RDR register | |
345 | * directly as 32bit data | |
346 | * see rsnd_ssi_init() | |
347 | */ | |
348 | if (rsnd_dai_is_play(rdai, io)) | |
4686a0ad | 349 | rsnd_mod_write(mod, SSITDR, *buf); |
ae5c3223 | 350 | else |
4686a0ad | 351 | *buf = rsnd_mod_read(mod, SSIRDR); |
ae5c3223 KM |
352 | |
353 | rsnd_dai_pointer_update(io, sizeof(*buf)); | |
354 | ||
355 | ret = IRQ_HANDLED; | |
356 | } | |
357 | ||
358 | return ret; | |
359 | } | |
360 | ||
ff8f30e6 KM |
361 | static int rsnd_ssi_pio_probe(struct rsnd_mod *mod, |
362 | struct rsnd_dai *rdai, | |
363 | struct rsnd_dai_stream *io) | |
364 | { | |
365 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); | |
366 | struct device *dev = rsnd_priv_to_dev(priv); | |
367 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
368 | int irq = ssi->info->pio_irq; | |
369 | int ret; | |
370 | ||
371 | ret = devm_request_irq(dev, irq, | |
372 | rsnd_ssi_pio_interrupt, | |
373 | IRQF_SHARED, | |
374 | dev_name(dev), ssi); | |
375 | if (ret) | |
376 | dev_err(dev, "SSI request interrupt failed\n"); | |
377 | ||
378 | return ret; | |
379 | } | |
380 | ||
ae5c3223 KM |
381 | static int rsnd_ssi_pio_start(struct rsnd_mod *mod, |
382 | struct rsnd_dai *rdai, | |
383 | struct rsnd_dai_stream *io) | |
384 | { | |
ae5c3223 | 385 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
ae5c3223 KM |
386 | |
387 | /* enable PIO IRQ */ | |
388 | ssi->cr_etc = UIEN | OIEN | DIEN; | |
389 | ||
ba9c949f | 390 | rsnd_src_enable_ssi_irq(mod, rdai, io); |
b8cc41e9 | 391 | |
ae5c3223 KM |
392 | rsnd_ssi_hw_start(ssi, rdai, io); |
393 | ||
ae5c3223 KM |
394 | return 0; |
395 | } | |
396 | ||
397 | static int rsnd_ssi_pio_stop(struct rsnd_mod *mod, | |
398 | struct rsnd_dai *rdai, | |
399 | struct rsnd_dai_stream *io) | |
400 | { | |
ae5c3223 KM |
401 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
402 | ||
ae5c3223 KM |
403 | ssi->cr_etc = 0; |
404 | ||
405 | rsnd_ssi_hw_stop(ssi, rdai); | |
406 | ||
407 | return 0; | |
408 | } | |
409 | ||
410 | static struct rsnd_mod_ops rsnd_ssi_pio_ops = { | |
411 | .name = "ssi (pio)", | |
ff8f30e6 | 412 | .probe = rsnd_ssi_pio_probe, |
ae5c3223 KM |
413 | .init = rsnd_ssi_init, |
414 | .quit = rsnd_ssi_quit, | |
415 | .start = rsnd_ssi_pio_start, | |
416 | .stop = rsnd_ssi_pio_stop, | |
417 | }; | |
418 | ||
ff8f30e6 KM |
419 | static int rsnd_ssi_dma_probe(struct rsnd_mod *mod, |
420 | struct rsnd_dai *rdai, | |
421 | struct rsnd_dai_stream *io) | |
422 | { | |
423 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); | |
424 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
425 | struct rcar_snd_info *info = rsnd_priv_to_info(priv); | |
426 | struct device *dev = rsnd_priv_to_dev(priv); | |
427 | int dma_id = ssi->info->dma_id; | |
428 | int is_play; | |
429 | int ret; | |
430 | ||
431 | if (info->dai_info) | |
432 | is_play = rsnd_info_is_playback(priv, ssi); | |
433 | else | |
434 | is_play = rsnd_ssi_is_play(&ssi->mod); | |
435 | ||
436 | ret = rsnd_dma_init( | |
437 | priv, rsnd_mod_to_dma(mod), | |
438 | is_play, | |
439 | dma_id); | |
440 | ||
441 | if (ret < 0) | |
442 | dev_err(dev, "SSI DMA failed\n"); | |
443 | ||
444 | return ret; | |
445 | } | |
446 | ||
447 | static int rsnd_ssi_dma_remove(struct rsnd_mod *mod, | |
448 | struct rsnd_dai *rdai, | |
449 | struct rsnd_dai_stream *io) | |
450 | { | |
451 | rsnd_dma_quit(rsnd_mod_to_priv(mod), rsnd_mod_to_dma(mod)); | |
452 | ||
453 | return 0; | |
454 | } | |
455 | ||
849fc82a KM |
456 | static int rsnd_ssi_dma_start(struct rsnd_mod *mod, |
457 | struct rsnd_dai *rdai, | |
458 | struct rsnd_dai_stream *io) | |
459 | { | |
460 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
461 | struct rsnd_dma *dma = rsnd_mod_to_dma(&ssi->mod); | |
462 | ||
463 | /* enable DMA transfer */ | |
464 | ssi->cr_etc = DMEN; | |
849fc82a KM |
465 | |
466 | rsnd_dma_start(dma); | |
467 | ||
468 | rsnd_ssi_hw_start(ssi, ssi->rdai, io); | |
469 | ||
470 | /* enable WS continue */ | |
e779a20d | 471 | if (rsnd_dai_is_clk_master(rdai)) |
849fc82a KM |
472 | rsnd_mod_write(&ssi->mod, SSIWSR, CONT); |
473 | ||
474 | return 0; | |
475 | } | |
476 | ||
477 | static int rsnd_ssi_dma_stop(struct rsnd_mod *mod, | |
478 | struct rsnd_dai *rdai, | |
479 | struct rsnd_dai_stream *io) | |
480 | { | |
481 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
482 | struct rsnd_dma *dma = rsnd_mod_to_dma(&ssi->mod); | |
483 | ||
484 | ssi->cr_etc = 0; | |
485 | ||
4686a0ad KM |
486 | rsnd_ssi_record_error(ssi, rsnd_mod_read(mod, SSISR)); |
487 | ||
849fc82a KM |
488 | rsnd_ssi_hw_stop(ssi, rdai); |
489 | ||
490 | rsnd_dma_stop(dma); | |
491 | ||
492 | return 0; | |
493 | } | |
494 | ||
495 | static struct rsnd_mod_ops rsnd_ssi_dma_ops = { | |
496 | .name = "ssi (dma)", | |
ff8f30e6 KM |
497 | .probe = rsnd_ssi_dma_probe, |
498 | .remove = rsnd_ssi_dma_remove, | |
849fc82a KM |
499 | .init = rsnd_ssi_init, |
500 | .quit = rsnd_ssi_quit, | |
501 | .start = rsnd_ssi_dma_start, | |
502 | .stop = rsnd_ssi_dma_stop, | |
503 | }; | |
504 | ||
ae5c3223 KM |
505 | /* |
506 | * Non SSI | |
507 | */ | |
ae5c3223 KM |
508 | static struct rsnd_mod_ops rsnd_ssi_non_ops = { |
509 | .name = "ssi (non)", | |
ae5c3223 KM |
510 | }; |
511 | ||
512 | /* | |
513 | * ssi mod function | |
514 | */ | |
4b4dab82 KM |
515 | struct rsnd_mod *rsnd_ssi_mod_get_frm_dai(struct rsnd_priv *priv, |
516 | int dai_id, int is_play) | |
517 | { | |
78f13d0c KM |
518 | struct rsnd_dai_platform_info *dai_info = NULL; |
519 | struct rsnd_dai_path_info *path_info = NULL; | |
520 | struct rsnd_ssi_platform_info *target_info = NULL; | |
4b4dab82 KM |
521 | struct rsnd_ssi *ssi; |
522 | int i, has_play; | |
523 | ||
78f13d0c KM |
524 | if (priv->rdai) |
525 | dai_info = priv->rdai[dai_id].info; | |
526 | if (dai_info) | |
527 | path_info = (is_play) ? &dai_info->playback : &dai_info->capture; | |
528 | if (path_info) | |
529 | target_info = path_info->ssi; | |
530 | ||
4b4dab82 KM |
531 | is_play = !!is_play; |
532 | ||
533 | for_each_rsnd_ssi(ssi, priv, i) { | |
78f13d0c KM |
534 | if (target_info == ssi->info) |
535 | return &ssi->mod; | |
536 | ||
537 | /* for compatible */ | |
4b4dab82 KM |
538 | if (rsnd_ssi_dai_id(ssi) != dai_id) |
539 | continue; | |
540 | ||
32f27ebf | 541 | has_play = rsnd_ssi_is_play(&ssi->mod); |
4b4dab82 KM |
542 | |
543 | if (is_play == has_play) | |
544 | return &ssi->mod; | |
545 | } | |
546 | ||
547 | return NULL; | |
548 | } | |
549 | ||
ae5c3223 KM |
550 | struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id) |
551 | { | |
8b14719b TI |
552 | if (WARN_ON(id < 0 || id >= rsnd_ssi_nr(priv))) |
553 | id = 0; | |
ae5c3223 | 554 | |
dd27d808 | 555 | return &((struct rsnd_ssi *)(priv->ssi) + id)->mod; |
ae5c3223 KM |
556 | } |
557 | ||
7b5ce975 KM |
558 | int rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod) |
559 | { | |
560 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
561 | ||
562 | return !!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_CLK_PIN_SHARE); | |
563 | } | |
564 | ||
32f27ebf KM |
565 | int rsnd_ssi_is_play(struct rsnd_mod *mod) |
566 | { | |
567 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
568 | ||
569 | return !!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_PLAY); | |
570 | } | |
571 | ||
7b5ce975 KM |
572 | static void rsnd_ssi_parent_clk_setup(struct rsnd_priv *priv, struct rsnd_ssi *ssi) |
573 | { | |
574 | if (!rsnd_ssi_is_pin_sharing(&ssi->mod)) | |
575 | return; | |
576 | ||
577 | switch (rsnd_mod_id(&ssi->mod)) { | |
578 | case 1: | |
579 | case 2: | |
580 | ssi->parent = rsnd_mod_to_ssi(rsnd_ssi_mod_get(priv, 0)); | |
581 | break; | |
582 | case 4: | |
583 | ssi->parent = rsnd_mod_to_ssi(rsnd_ssi_mod_get(priv, 3)); | |
584 | break; | |
585 | case 8: | |
586 | ssi->parent = rsnd_mod_to_ssi(rsnd_ssi_mod_get(priv, 7)); | |
587 | break; | |
588 | } | |
589 | } | |
590 | ||
90e8e50f KM |
591 | |
592 | static void rsnd_of_parse_ssi(struct platform_device *pdev, | |
593 | const struct rsnd_of_data *of_data, | |
594 | struct rsnd_priv *priv) | |
595 | { | |
596 | struct device_node *node; | |
597 | struct device_node *np; | |
598 | struct rsnd_ssi_platform_info *ssi_info; | |
599 | struct rcar_snd_info *info = rsnd_priv_to_info(priv); | |
600 | struct device *dev = &pdev->dev; | |
601 | int nr, i; | |
602 | ||
603 | if (!of_data) | |
604 | return; | |
605 | ||
606 | node = of_get_child_by_name(dev->of_node, "rcar_sound,ssi"); | |
607 | if (!node) | |
608 | return; | |
609 | ||
610 | nr = of_get_child_count(node); | |
611 | if (!nr) | |
612 | return; | |
613 | ||
614 | ssi_info = devm_kzalloc(dev, | |
615 | sizeof(struct rsnd_ssi_platform_info) * nr, | |
616 | GFP_KERNEL); | |
617 | if (!ssi_info) { | |
618 | dev_err(dev, "ssi info allocation error\n"); | |
619 | return; | |
620 | } | |
621 | ||
622 | info->ssi_info = ssi_info; | |
623 | info->ssi_info_nr = nr; | |
624 | ||
625 | i = -1; | |
626 | for_each_child_of_node(node, np) { | |
627 | i++; | |
628 | ||
629 | ssi_info = info->ssi_info + i; | |
630 | ||
631 | /* | |
632 | * pin settings | |
633 | */ | |
634 | if (of_get_property(np, "shared-pin", NULL)) | |
635 | ssi_info->flags |= RSND_SSI_CLK_PIN_SHARE; | |
636 | ||
637 | /* | |
638 | * irq | |
639 | */ | |
640 | ssi_info->pio_irq = irq_of_parse_and_map(np, 0); | |
641 | } | |
642 | } | |
643 | ||
ae5c3223 | 644 | int rsnd_ssi_probe(struct platform_device *pdev, |
90e8e50f | 645 | const struct rsnd_of_data *of_data, |
ae5c3223 KM |
646 | struct rsnd_priv *priv) |
647 | { | |
5da39cf3 | 648 | struct rcar_snd_info *info = rsnd_priv_to_info(priv); |
ae5c3223 KM |
649 | struct rsnd_ssi_platform_info *pinfo; |
650 | struct device *dev = rsnd_priv_to_dev(priv); | |
651 | struct rsnd_mod_ops *ops; | |
652 | struct clk *clk; | |
ae5c3223 KM |
653 | struct rsnd_ssi *ssi; |
654 | char name[RSND_SSI_NAME_SIZE]; | |
ff8f30e6 | 655 | int i, nr; |
ae5c3223 | 656 | |
90e8e50f KM |
657 | rsnd_of_parse_ssi(pdev, of_data, priv); |
658 | ||
ae5c3223 KM |
659 | /* |
660 | * init SSI | |
661 | */ | |
662 | nr = info->ssi_info_nr; | |
dd27d808 KM |
663 | ssi = devm_kzalloc(dev, sizeof(*ssi) * nr, GFP_KERNEL); |
664 | if (!ssi) { | |
ae5c3223 KM |
665 | dev_err(dev, "SSI allocate failed\n"); |
666 | return -ENOMEM; | |
667 | } | |
668 | ||
dd27d808 KM |
669 | priv->ssi = ssi; |
670 | priv->ssi_nr = nr; | |
ae5c3223 KM |
671 | |
672 | for_each_rsnd_ssi(ssi, priv, i) { | |
673 | pinfo = &info->ssi_info[i]; | |
674 | ||
675 | snprintf(name, RSND_SSI_NAME_SIZE, "ssi.%d", i); | |
676 | ||
60dbb4f1 | 677 | clk = devm_clk_get(dev, name); |
ae5c3223 KM |
678 | if (IS_ERR(clk)) |
679 | return PTR_ERR(clk); | |
680 | ||
681 | ssi->info = pinfo; | |
682 | ssi->clk = clk; | |
683 | ||
684 | ops = &rsnd_ssi_non_ops; | |
ff8f30e6 KM |
685 | if (pinfo->dma_id > 0) |
686 | ops = &rsnd_ssi_dma_ops; | |
687 | else if (rsnd_ssi_pio_available(ssi)) | |
688 | ops = &rsnd_ssi_pio_ops; | |
ae5c3223 | 689 | |
a126021d | 690 | rsnd_mod_init(priv, &ssi->mod, ops, RSND_MOD_SSI, i); |
7b5ce975 KM |
691 | |
692 | rsnd_ssi_parent_clk_setup(priv, ssi); | |
ae5c3223 KM |
693 | } |
694 | ||
ae5c3223 KM |
695 | return 0; |
696 | } |