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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; |
08bada26 | 75 | u32 wsr; |
919567d9 | 76 | int chan; |
e7d850dd | 77 | int rate; |
02534f2f | 78 | int irq; |
ae5c3223 | 79 | unsigned int usrcnt; |
a97a06c7 KM |
80 | |
81 | int byte_pos; | |
82 | int period_pos; | |
83 | int byte_per_period; | |
84 | int next_period_byte; | |
ae5c3223 KM |
85 | }; |
86 | ||
02534f2f KM |
87 | /* flags */ |
88 | #define RSND_SSI_CLK_PIN_SHARE (1 << 0) | |
89 | #define RSND_SSI_NO_BUSIF (1 << 1) /* SSI+DMA without BUSIF */ | |
7fa72cca KM |
90 | #define RSND_SSI_HDMI0 (1 << 2) /* for HDMI0 */ |
91 | #define RSND_SSI_HDMI1 (1 << 3) /* for HDMI1 */ | |
02534f2f | 92 | |
ae5c3223 KM |
93 | #define for_each_rsnd_ssi(pos, priv, i) \ |
94 | for (i = 0; \ | |
95 | (i < rsnd_ssi_nr(priv)) && \ | |
dd27d808 | 96 | ((pos) = ((struct rsnd_ssi *)(priv)->ssi + i)); \ |
ae5c3223 KM |
97 | i++) |
98 | ||
02534f2f | 99 | #define rsnd_ssi_get(priv, id) ((struct rsnd_ssi *)(priv->ssi) + id) |
232c00b6 | 100 | #define rsnd_ssi_to_dma(mod) ((ssi)->dma) |
dd27d808 | 101 | #define rsnd_ssi_nr(priv) ((priv)->ssi_nr) |
ae5c3223 | 102 | #define rsnd_mod_to_ssi(_mod) container_of((_mod), struct rsnd_ssi, mod) |
02534f2f | 103 | #define rsnd_ssi_mode_flags(p) ((p)->flags) |
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))) | |
ae5c3223 | 109 | |
7fa72cca KM |
110 | int rsnd_ssi_hdmi_port(struct rsnd_dai_stream *io) |
111 | { | |
112 | struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io); | |
113 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
114 | ||
115 | if (rsnd_ssi_mode_flags(ssi) & RSND_SSI_HDMI0) | |
116 | return RSND_SSI_HDMI_PORT0; | |
117 | ||
118 | if (rsnd_ssi_mode_flags(ssi) & RSND_SSI_HDMI1) | |
119 | return RSND_SSI_HDMI_PORT1; | |
120 | ||
121 | return 0; | |
122 | } | |
123 | ||
b415b4d3 | 124 | int rsnd_ssi_use_busif(struct rsnd_dai_stream *io) |
d9288d0b | 125 | { |
b415b4d3 | 126 | struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io); |
d9288d0b | 127 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
d9288d0b KM |
128 | int use_busif = 0; |
129 | ||
7b466fc6 KM |
130 | if (!rsnd_ssi_is_dma_mode(mod)) |
131 | return 0; | |
132 | ||
d9288d0b KM |
133 | if (!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_NO_BUSIF)) |
134 | use_busif = 1; | |
135 | if (rsnd_io_to_mod_src(io)) | |
136 | use_busif = 1; | |
137 | ||
138 | return use_busif; | |
139 | } | |
140 | ||
e10369d8 KM |
141 | static void rsnd_ssi_status_clear(struct rsnd_mod *mod) |
142 | { | |
143 | rsnd_mod_write(mod, SSISR, 0); | |
144 | } | |
145 | ||
146 | static u32 rsnd_ssi_status_get(struct rsnd_mod *mod) | |
147 | { | |
148 | return rsnd_mod_read(mod, SSISR); | |
149 | } | |
150 | ||
ae5c3223 KM |
151 | static void rsnd_ssi_status_check(struct rsnd_mod *mod, |
152 | u32 bit) | |
153 | { | |
154 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); | |
155 | struct device *dev = rsnd_priv_to_dev(priv); | |
156 | u32 status; | |
157 | int i; | |
158 | ||
159 | for (i = 0; i < 1024; i++) { | |
e10369d8 | 160 | status = rsnd_ssi_status_get(mod); |
ae5c3223 KM |
161 | if (status & bit) |
162 | return; | |
163 | ||
164 | udelay(50); | |
165 | } | |
166 | ||
1120dbff KM |
167 | dev_warn(dev, "%s[%d] status check failed\n", |
168 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
ae5c3223 KM |
169 | } |
170 | ||
4f5c634d | 171 | static u32 rsnd_ssi_multi_slaves(struct rsnd_dai_stream *io) |
b4c83b17 KM |
172 | { |
173 | struct rsnd_mod *mod; | |
b4c83b17 KM |
174 | enum rsnd_mod_type types[] = { |
175 | RSND_MOD_SSIM1, | |
176 | RSND_MOD_SSIM2, | |
177 | RSND_MOD_SSIM3, | |
178 | }; | |
179 | int i, mask; | |
180 | ||
b4c83b17 KM |
181 | mask = 0; |
182 | for (i = 0; i < ARRAY_SIZE(types); i++) { | |
183 | mod = rsnd_io_to_mod(io, types[i]); | |
184 | if (!mod) | |
185 | continue; | |
186 | ||
187 | mask |= 1 << rsnd_mod_id(mod); | |
188 | } | |
189 | ||
190 | return mask; | |
191 | } | |
192 | ||
fd9adcfd KM |
193 | static u32 rsnd_ssi_run_mods(struct rsnd_dai_stream *io) |
194 | { | |
195 | struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io); | |
196 | struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io); | |
197 | ||
198 | return rsnd_ssi_multi_slaves_runtime(io) | | |
199 | 1 << rsnd_mod_id(ssi_mod) | | |
200 | 1 << rsnd_mod_id(ssi_parent_mod); | |
201 | } | |
202 | ||
4f5c634d KM |
203 | u32 rsnd_ssi_multi_slaves_runtime(struct rsnd_dai_stream *io) |
204 | { | |
eed76bb8 KM |
205 | if (rsnd_runtime_is_ssi_multi(io)) |
206 | return rsnd_ssi_multi_slaves(io); | |
4f5c634d KM |
207 | |
208 | return 0; | |
209 | } | |
210 | ||
26d34b11 | 211 | static int rsnd_ssi_master_clk_start(struct rsnd_mod *mod, |
adcf7d5e | 212 | struct rsnd_dai_stream *io) |
ae5c3223 | 213 | { |
1b13d118 | 214 | struct rsnd_priv *priv = rsnd_io_to_priv(io); |
ae5c3223 | 215 | struct device *dev = rsnd_priv_to_dev(priv); |
e7d850dd | 216 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); |
26d34b11 | 217 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
e7d850dd | 218 | struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io); |
eed76bb8 | 219 | int chan = rsnd_runtime_channel_for_ssi(io); |
eae6fff4 | 220 | int j, ret; |
ae5c3223 KM |
221 | int ssi_clk_mul_table[] = { |
222 | 1, 2, 4, 8, 16, 6, 12, | |
223 | }; | |
224 | unsigned int main_rate; | |
cbf1494f KM |
225 | unsigned int rate = rsnd_io_is_play(io) ? |
226 | rsnd_src_get_out_rate(priv, io) : | |
227 | rsnd_src_get_in_rate(priv, io); | |
ae5c3223 | 228 | |
e7d850dd KM |
229 | if (!rsnd_rdai_is_clk_master(rdai)) |
230 | return 0; | |
231 | ||
232 | if (ssi_parent_mod && !rsnd_ssi_is_parent(mod, io)) | |
233 | return 0; | |
234 | ||
b4c83b17 KM |
235 | if (rsnd_ssi_is_multi_slave(mod, io)) |
236 | return 0; | |
237 | ||
e7d850dd KM |
238 | if (ssi->usrcnt > 1) { |
239 | if (ssi->rate != rate) { | |
240 | dev_err(dev, "SSI parent/child should use same rate\n"); | |
241 | return -EINVAL; | |
242 | } | |
243 | ||
244 | return 0; | |
245 | } | |
246 | ||
ae5c3223 KM |
247 | /* |
248 | * Find best clock, and try to start ADG | |
249 | */ | |
eae6fff4 KM |
250 | for (j = 0; j < ARRAY_SIZE(ssi_clk_mul_table); j++) { |
251 | ||
6b8530cc KM |
252 | /* |
253 | * It will set SSIWSR.CONT here, but SSICR.CKDV = 000 | |
254 | * with it is not allowed. (SSIWSR.WS_MODE with | |
255 | * SSICR.CKDV = 000 is not allowed either). | |
256 | * Skip it. See SSICR.CKDV | |
257 | */ | |
258 | if (j == 0) | |
259 | continue; | |
260 | ||
eae6fff4 KM |
261 | /* |
262 | * this driver is assuming that | |
eed76bb8 | 263 | * system word is 32bit x chan |
eae6fff4 KM |
264 | * see rsnd_ssi_init() |
265 | */ | |
eed76bb8 | 266 | main_rate = rate * 32 * chan * ssi_clk_mul_table[j]; |
eae6fff4 KM |
267 | |
268 | ret = rsnd_adg_ssi_clk_try_start(mod, main_rate); | |
269 | if (0 == ret) { | |
270 | ssi->cr_clk = FORCE | SWL_32 | | |
271 | SCKD | SWSD | CKDV(j); | |
08bada26 | 272 | ssi->wsr = CONT; |
eae6fff4 | 273 | |
e7d850dd KM |
274 | ssi->rate = rate; |
275 | ||
eae6fff4 KM |
276 | dev_dbg(dev, "%s[%d] outputs %u Hz\n", |
277 | rsnd_mod_name(mod), | |
278 | rsnd_mod_id(mod), rate); | |
279 | ||
280 | return 0; | |
ae5c3223 KM |
281 | } |
282 | } | |
283 | ||
284 | dev_err(dev, "unsupported clock rate\n"); | |
285 | return -EIO; | |
286 | } | |
287 | ||
26d34b11 | 288 | static void rsnd_ssi_master_clk_stop(struct rsnd_mod *mod, |
e7d850dd | 289 | struct rsnd_dai_stream *io) |
ae5c3223 | 290 | { |
f708d944 | 291 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); |
26d34b11 | 292 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
e7d850dd | 293 | struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io); |
3ba84f45 | 294 | |
e7d850dd | 295 | if (!rsnd_rdai_is_clk_master(rdai)) |
ae5c3223 | 296 | return; |
ae5c3223 | 297 | |
e7d850dd KM |
298 | if (ssi_parent_mod && !rsnd_ssi_is_parent(mod, io)) |
299 | return; | |
ae5c3223 | 300 | |
e7d850dd KM |
301 | if (ssi->usrcnt > 1) |
302 | return; | |
919567d9 | 303 | |
e7d850dd KM |
304 | ssi->cr_clk = 0; |
305 | ssi->rate = 0; | |
ae5c3223 | 306 | |
e7d850dd | 307 | rsnd_adg_ssi_clk_stop(mod); |
ae5c3223 KM |
308 | } |
309 | ||
0dc6bf75 | 310 | static void rsnd_ssi_config_init(struct rsnd_mod *mod, |
840ada3b KM |
311 | struct rsnd_dai_stream *io) |
312 | { | |
313 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); | |
314 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); | |
26d34b11 | 315 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
840ada3b KM |
316 | u32 cr_own; |
317 | u32 cr_mode; | |
186fadc1 | 318 | u32 wsr; |
f98ed119 KM |
319 | int is_tdm; |
320 | ||
eed76bb8 | 321 | is_tdm = rsnd_runtime_is_ssi_tdm(io); |
840ada3b KM |
322 | |
323 | /* | |
324 | * always use 32bit system word. | |
325 | * see also rsnd_ssi_master_clk_enable() | |
326 | */ | |
90431eb4 | 327 | cr_own = FORCE | SWL_32; |
840ada3b KM |
328 | |
329 | if (rdai->bit_clk_inv) | |
330 | cr_own |= SCKP; | |
f98ed119 | 331 | if (rdai->frm_clk_inv ^ is_tdm) |
840ada3b KM |
332 | cr_own |= SWSP; |
333 | if (rdai->data_alignment) | |
334 | cr_own |= SDTA; | |
335 | if (rdai->sys_delay) | |
336 | cr_own |= DEL; | |
337 | if (rsnd_io_is_play(io)) | |
338 | cr_own |= TRMD; | |
339 | ||
340 | switch (runtime->sample_bits) { | |
341 | case 16: | |
342 | cr_own |= DWL_16; | |
343 | break; | |
344 | case 32: | |
345 | cr_own |= DWL_24; | |
346 | break; | |
840ada3b KM |
347 | } |
348 | ||
26d34b11 | 349 | if (rsnd_ssi_is_dma_mode(mod)) { |
840ada3b KM |
350 | cr_mode = UIEN | OIEN | /* over/under run */ |
351 | DMEN; /* DMA : enable DMA */ | |
352 | } else { | |
353 | cr_mode = DIEN; /* PIO : enable Data interrupt */ | |
354 | } | |
355 | ||
186fadc1 KM |
356 | /* |
357 | * TDM Extend Mode | |
358 | * see | |
359 | * rsnd_ssiu_init_gen2() | |
360 | */ | |
361 | wsr = ssi->wsr; | |
f98ed119 | 362 | if (is_tdm) { |
186fadc1 KM |
363 | wsr |= WS_MODE; |
364 | cr_own |= CHNL_8; | |
365 | } | |
366 | ||
840ada3b KM |
367 | ssi->cr_own = cr_own; |
368 | ssi->cr_mode = cr_mode; | |
186fadc1 | 369 | ssi->wsr = wsr; |
0dc6bf75 | 370 | } |
840ada3b | 371 | |
0dc6bf75 KM |
372 | static void rsnd_ssi_register_setup(struct rsnd_mod *mod) |
373 | { | |
374 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
375 | ||
376 | rsnd_mod_write(mod, SSIWSR, ssi->wsr); | |
377 | rsnd_mod_write(mod, SSICR, ssi->cr_own | | |
378 | ssi->cr_clk | | |
379 | ssi->cr_mode); /* without EN */ | |
840ada3b KM |
380 | } |
381 | ||
a97a06c7 KM |
382 | static void rsnd_ssi_pointer_init(struct rsnd_mod *mod, |
383 | struct rsnd_dai_stream *io) | |
384 | { | |
385 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
386 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); | |
387 | ||
388 | ssi->byte_pos = 0; | |
389 | ssi->period_pos = 0; | |
390 | ssi->byte_per_period = runtime->period_size * | |
391 | runtime->channels * | |
392 | samples_to_bytes(runtime, 1); | |
393 | ssi->next_period_byte = ssi->byte_per_period; | |
394 | } | |
395 | ||
396 | static int rsnd_ssi_pointer_offset(struct rsnd_mod *mod, | |
397 | struct rsnd_dai_stream *io, | |
398 | int additional) | |
399 | { | |
400 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
401 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); | |
402 | int pos = ssi->byte_pos + additional; | |
403 | ||
404 | pos %= (runtime->periods * ssi->byte_per_period); | |
405 | ||
406 | return pos; | |
407 | } | |
408 | ||
409 | static bool rsnd_ssi_pointer_update(struct rsnd_mod *mod, | |
410 | struct rsnd_dai_stream *io, | |
411 | int byte) | |
412 | { | |
413 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
414 | ||
415 | ssi->byte_pos += byte; | |
416 | ||
417 | if (ssi->byte_pos >= ssi->next_period_byte) { | |
418 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); | |
419 | ||
420 | ssi->period_pos++; | |
421 | ssi->next_period_byte += ssi->byte_per_period; | |
422 | ||
423 | if (ssi->period_pos >= runtime->periods) { | |
424 | ssi->byte_pos = 0; | |
425 | ssi->period_pos = 0; | |
426 | ssi->next_period_byte = ssi->byte_per_period; | |
427 | } | |
428 | ||
429 | return true; | |
430 | } | |
431 | ||
432 | return false; | |
433 | } | |
434 | ||
ae5c3223 KM |
435 | /* |
436 | * SSI mod common functions | |
437 | */ | |
438 | static int rsnd_ssi_init(struct rsnd_mod *mod, | |
2c0fac19 | 439 | struct rsnd_dai_stream *io, |
690602fc | 440 | struct rsnd_priv *priv) |
ae5c3223 KM |
441 | { |
442 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
e7d850dd KM |
443 | int ret; |
444 | ||
fd9adcfd KM |
445 | if (!rsnd_ssi_is_run_mods(mod, io)) |
446 | return 0; | |
447 | ||
a97a06c7 KM |
448 | rsnd_ssi_pointer_init(mod, io); |
449 | ||
e7d850dd KM |
450 | ssi->usrcnt++; |
451 | ||
452 | rsnd_mod_power_on(mod); | |
453 | ||
26d34b11 | 454 | ret = rsnd_ssi_master_clk_start(mod, io); |
e7d850dd KM |
455 | if (ret < 0) |
456 | return ret; | |
457 | ||
0dc6bf75 KM |
458 | if (!rsnd_ssi_is_parent(mod, io)) |
459 | rsnd_ssi_config_init(mod, io); | |
ae5c3223 | 460 | |
0dc6bf75 | 461 | rsnd_ssi_register_setup(mod); |
e7d850dd | 462 | |
e7d850dd KM |
463 | /* clear error status */ |
464 | rsnd_ssi_status_clear(mod); | |
465 | ||
ae5c3223 KM |
466 | return 0; |
467 | } | |
468 | ||
469 | static int rsnd_ssi_quit(struct rsnd_mod *mod, | |
2c0fac19 | 470 | struct rsnd_dai_stream *io, |
690602fc | 471 | struct rsnd_priv *priv) |
ae5c3223 KM |
472 | { |
473 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
ae5c3223 KM |
474 | struct device *dev = rsnd_priv_to_dev(priv); |
475 | ||
fd9adcfd KM |
476 | if (!rsnd_ssi_is_run_mods(mod, io)) |
477 | return 0; | |
478 | ||
e5d9cfc6 AH |
479 | if (!ssi->usrcnt) { |
480 | dev_err(dev, "%s[%d] usrcnt error\n", | |
481 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
482 | return -EIO; | |
483 | } | |
e7d850dd | 484 | |
b5b442ab | 485 | if (!rsnd_ssi_is_parent(mod, io)) |
e5d9cfc6 | 486 | ssi->cr_own = 0; |
ae5c3223 | 487 | |
26d34b11 | 488 | rsnd_ssi_master_clk_stop(mod, io); |
e7d850dd KM |
489 | |
490 | rsnd_mod_power_off(mod); | |
491 | ||
492 | ssi->usrcnt--; | |
493 | ||
ae5c3223 KM |
494 | return 0; |
495 | } | |
496 | ||
919567d9 | 497 | static int rsnd_ssi_hw_params(struct rsnd_mod *mod, |
2c0fac19 | 498 | struct rsnd_dai_stream *io, |
919567d9 KM |
499 | struct snd_pcm_substream *substream, |
500 | struct snd_pcm_hw_params *params) | |
501 | { | |
502 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
919567d9 KM |
503 | int chan = params_channels(params); |
504 | ||
505 | /* | |
6bf66b1c KM |
506 | * snd_pcm_ops::hw_params will be called *before* |
507 | * snd_soc_dai_ops::trigger. Thus, ssi->usrcnt is 0 | |
508 | * in 1st call. | |
919567d9 | 509 | */ |
6bf66b1c | 510 | if (ssi->usrcnt) { |
919567d9 | 511 | /* |
6bf66b1c KM |
512 | * Already working. |
513 | * It will happen if SSI has parent/child connection. | |
919567d9 KM |
514 | * it is error if child <-> parent SSI uses |
515 | * different channels. | |
516 | */ | |
517 | if (ssi->chan != chan) | |
518 | return -EIO; | |
519 | } | |
520 | ||
919567d9 | 521 | ssi->chan = chan; |
919567d9 KM |
522 | |
523 | return 0; | |
524 | } | |
525 | ||
6a25c8da KM |
526 | static int rsnd_ssi_start(struct rsnd_mod *mod, |
527 | struct rsnd_dai_stream *io, | |
528 | struct rsnd_priv *priv) | |
e7d850dd | 529 | { |
fd9adcfd KM |
530 | if (!rsnd_ssi_is_run_mods(mod, io)) |
531 | return 0; | |
532 | ||
b4c83b17 KM |
533 | /* |
534 | * EN will be set via SSIU :: SSI_CONTROL | |
535 | * if Multi channel mode | |
536 | */ | |
4f5c634d | 537 | if (rsnd_ssi_multi_slaves_runtime(io)) |
0dc6bf75 | 538 | return 0; |
e7d850dd | 539 | |
0dc6bf75 | 540 | rsnd_mod_bset(mod, SSICR, EN, EN); |
e7d850dd KM |
541 | |
542 | return 0; | |
543 | } | |
544 | ||
6a25c8da KM |
545 | static int rsnd_ssi_stop(struct rsnd_mod *mod, |
546 | struct rsnd_dai_stream *io, | |
547 | struct rsnd_priv *priv) | |
e7d850dd | 548 | { |
6a25c8da KM |
549 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
550 | u32 cr; | |
551 | ||
fd9adcfd KM |
552 | if (!rsnd_ssi_is_run_mods(mod, io)) |
553 | return 0; | |
554 | ||
e7d850dd | 555 | /* |
6a25c8da | 556 | * don't stop if not last user |
e7d850dd | 557 | * see also |
6a25c8da | 558 | * rsnd_ssi_start |
e7d850dd KM |
559 | * rsnd_ssi_interrupt |
560 | */ | |
6a25c8da KM |
561 | if (ssi->usrcnt > 1) |
562 | return 0; | |
e7d850dd KM |
563 | |
564 | /* | |
565 | * disable all IRQ, | |
566 | * and, wait all data was sent | |
567 | */ | |
568 | cr = ssi->cr_own | | |
569 | ssi->cr_clk; | |
4e7d606c | 570 | |
e7d850dd KM |
571 | rsnd_mod_write(mod, SSICR, cr | EN); |
572 | rsnd_ssi_status_check(mod, DIRQ); | |
4e7d606c | 573 | |
e7d850dd KM |
574 | /* |
575 | * disable SSI, | |
576 | * and, wait idle state | |
577 | */ | |
578 | rsnd_mod_write(mod, SSICR, cr); /* disabled all */ | |
579 | rsnd_ssi_status_check(mod, IIRQ); | |
4e7d606c KM |
580 | |
581 | return 0; | |
582 | } | |
583 | ||
615fb6c7 KM |
584 | static int rsnd_ssi_irq(struct rsnd_mod *mod, |
585 | struct rsnd_dai_stream *io, | |
586 | struct rsnd_priv *priv, | |
587 | int enable) | |
588 | { | |
589 | u32 val = 0; | |
590 | ||
591 | if (rsnd_is_gen1(priv)) | |
592 | return 0; | |
593 | ||
594 | if (rsnd_ssi_is_parent(mod, io)) | |
595 | return 0; | |
596 | ||
fd9adcfd KM |
597 | if (!rsnd_ssi_is_run_mods(mod, io)) |
598 | return 0; | |
599 | ||
615fb6c7 KM |
600 | if (enable) |
601 | val = rsnd_ssi_is_dma_mode(mod) ? 0x0e000000 : 0x0f000000; | |
602 | ||
603 | rsnd_mod_write(mod, SSI_INT_ENABLE, val); | |
604 | ||
605 | return 0; | |
606 | } | |
607 | ||
bfc0cfe6 KM |
608 | static void __rsnd_ssi_interrupt(struct rsnd_mod *mod, |
609 | struct rsnd_dai_stream *io) | |
ae5c3223 | 610 | { |
690602fc | 611 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
765ae7c8 | 612 | int is_dma = rsnd_ssi_is_dma_mode(mod); |
02299d98 | 613 | u32 status; |
75defee0 | 614 | bool elapsed = false; |
6a25c8da | 615 | bool stop = false; |
02299d98 KM |
616 | |
617 | spin_lock(&priv->lock); | |
ae5c3223 | 618 | |
02299d98 | 619 | /* ignore all cases if not working */ |
d5bbe7de | 620 | if (!rsnd_io_is_working(io)) |
02299d98 KM |
621 | goto rsnd_ssi_interrupt_out; |
622 | ||
6a25c8da | 623 | status = rsnd_ssi_status_get(mod); |
4e7d606c KM |
624 | |
625 | /* PIO only */ | |
765ae7c8 | 626 | if (!is_dma && (status & DIRQ)) { |
ae5c3223 KM |
627 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
628 | u32 *buf = (u32 *)(runtime->dma_area + | |
a97a06c7 | 629 | rsnd_ssi_pointer_offset(mod, io, 0)); |
7819a942 KM |
630 | int shift = 0; |
631 | ||
632 | switch (runtime->sample_bits) { | |
633 | case 32: | |
634 | shift = 8; | |
635 | break; | |
636 | } | |
ae5c3223 | 637 | |
ae5c3223 KM |
638 | /* |
639 | * 8/16/32 data can be assesse to TDR/RDR register | |
640 | * directly as 32bit data | |
641 | * see rsnd_ssi_init() | |
642 | */ | |
985a4f6e | 643 | if (rsnd_io_is_play(io)) |
7819a942 | 644 | rsnd_mod_write(mod, SSITDR, (*buf) << shift); |
ae5c3223 | 645 | else |
7819a942 | 646 | *buf = (rsnd_mod_read(mod, SSIRDR) >> shift); |
ae5c3223 | 647 | |
a97a06c7 | 648 | elapsed = rsnd_ssi_pointer_update(mod, io, sizeof(*buf)); |
4e7d606c | 649 | } |
ae5c3223 | 650 | |
12927a8f | 651 | /* DMA only */ |
6a25c8da KM |
652 | if (is_dma && (status & (UIRQ | OIRQ))) |
653 | stop = true; | |
69e32a58 | 654 | |
5342dff2 | 655 | rsnd_ssi_status_clear(mod); |
02299d98 KM |
656 | rsnd_ssi_interrupt_out: |
657 | spin_unlock(&priv->lock); | |
658 | ||
75defee0 KM |
659 | if (elapsed) |
660 | rsnd_dai_period_elapsed(io); | |
6a25c8da KM |
661 | |
662 | if (stop) | |
663 | snd_pcm_stop_xrun(io->substream); | |
664 | ||
bfc0cfe6 KM |
665 | } |
666 | ||
667 | static irqreturn_t rsnd_ssi_interrupt(int irq, void *data) | |
668 | { | |
669 | struct rsnd_mod *mod = data; | |
670 | ||
671 | rsnd_mod_interrupt(mod, __rsnd_ssi_interrupt); | |
75defee0 | 672 | |
4e7d606c | 673 | return IRQ_HANDLED; |
ae5c3223 KM |
674 | } |
675 | ||
6cfad789 KM |
676 | /* |
677 | * SSI PIO | |
678 | */ | |
e7d850dd | 679 | static void rsnd_ssi_parent_attach(struct rsnd_mod *mod, |
098bd891 | 680 | struct rsnd_dai_stream *io) |
e7d850dd | 681 | { |
098bd891 KM |
682 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); |
683 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); | |
684 | ||
e7d850dd KM |
685 | if (!__rsnd_ssi_is_pin_sharing(mod)) |
686 | return; | |
687 | ||
098bd891 KM |
688 | if (!rsnd_rdai_is_clk_master(rdai)) |
689 | return; | |
690 | ||
e7d850dd KM |
691 | switch (rsnd_mod_id(mod)) { |
692 | case 1: | |
693 | case 2: | |
694 | rsnd_dai_connect(rsnd_ssi_mod_get(priv, 0), io, RSND_MOD_SSIP); | |
695 | break; | |
696 | case 4: | |
697 | rsnd_dai_connect(rsnd_ssi_mod_get(priv, 3), io, RSND_MOD_SSIP); | |
698 | break; | |
699 | case 8: | |
700 | rsnd_dai_connect(rsnd_ssi_mod_get(priv, 7), io, RSND_MOD_SSIP); | |
701 | break; | |
702 | } | |
703 | } | |
704 | ||
098bd891 KM |
705 | static int rsnd_ssi_pcm_new(struct rsnd_mod *mod, |
706 | struct rsnd_dai_stream *io, | |
707 | struct snd_soc_pcm_runtime *rtd) | |
708 | { | |
709 | /* | |
710 | * rsnd_rdai_is_clk_master() will be enabled after set_fmt, | |
711 | * and, pcm_new will be called after it. | |
712 | * This function reuse pcm_new at this point. | |
713 | */ | |
714 | rsnd_ssi_parent_attach(mod, io); | |
715 | ||
716 | return 0; | |
717 | } | |
718 | ||
c7f69ab5 KM |
719 | static int rsnd_ssi_common_probe(struct rsnd_mod *mod, |
720 | struct rsnd_dai_stream *io, | |
721 | struct rsnd_priv *priv) | |
ff8f30e6 | 722 | { |
ff8f30e6 KM |
723 | struct device *dev = rsnd_priv_to_dev(priv); |
724 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
ff8f30e6 KM |
725 | int ret; |
726 | ||
b4c83b17 KM |
727 | /* |
728 | * SSIP/SSIU/IRQ are not needed on | |
729 | * SSI Multi slaves | |
730 | */ | |
731 | if (rsnd_ssi_is_multi_slave(mod, io)) | |
732 | return 0; | |
733 | ||
098bd891 KM |
734 | /* |
735 | * It can't judge ssi parent at this point | |
736 | * see rsnd_ssi_pcm_new() | |
737 | */ | |
e7d850dd | 738 | |
c7f69ab5 KM |
739 | ret = rsnd_ssiu_attach(io, mod); |
740 | if (ret < 0) | |
741 | return ret; | |
742 | ||
701172dc KM |
743 | /* |
744 | * SSI might be called again as PIO fallback | |
745 | * It is easy to manual handling for IRQ request/free | |
746 | */ | |
747 | ret = request_irq(ssi->irq, | |
748 | rsnd_ssi_interrupt, | |
749 | IRQF_SHARED, | |
750 | dev_name(dev), mod); | |
8aefda50 | 751 | |
ff8f30e6 KM |
752 | return ret; |
753 | } | |
754 | ||
07b7acb5 KM |
755 | static int rsnd_ssi_pointer(struct rsnd_mod *mod, |
756 | struct rsnd_dai_stream *io, | |
757 | snd_pcm_uframes_t *pointer) | |
758 | { | |
a97a06c7 | 759 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
07b7acb5 KM |
760 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
761 | ||
a97a06c7 | 762 | *pointer = bytes_to_frames(runtime, ssi->byte_pos); |
07b7acb5 KM |
763 | |
764 | return 0; | |
765 | } | |
766 | ||
ae5c3223 | 767 | static struct rsnd_mod_ops rsnd_ssi_pio_ops = { |
8aefda50 | 768 | .name = SSI_NAME, |
c7f69ab5 | 769 | .probe = rsnd_ssi_common_probe, |
ae5c3223 KM |
770 | .init = rsnd_ssi_init, |
771 | .quit = rsnd_ssi_quit, | |
49229850 KM |
772 | .start = rsnd_ssi_start, |
773 | .stop = rsnd_ssi_stop, | |
b5b442ab | 774 | .irq = rsnd_ssi_irq, |
07b7acb5 | 775 | .pointer= rsnd_ssi_pointer, |
098bd891 | 776 | .pcm_new = rsnd_ssi_pcm_new, |
919567d9 | 777 | .hw_params = rsnd_ssi_hw_params, |
ae5c3223 KM |
778 | }; |
779 | ||
ff8f30e6 | 780 | static int rsnd_ssi_dma_probe(struct rsnd_mod *mod, |
2c0fac19 | 781 | struct rsnd_dai_stream *io, |
690602fc | 782 | struct rsnd_priv *priv) |
ff8f30e6 | 783 | { |
ff8f30e6 | 784 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
ff8f30e6 KM |
785 | int ret; |
786 | ||
b4c83b17 KM |
787 | /* |
788 | * SSIP/SSIU/IRQ/DMA are not needed on | |
789 | * SSI Multi slaves | |
790 | */ | |
791 | if (rsnd_ssi_is_multi_slave(mod, io)) | |
792 | return 0; | |
793 | ||
c7f69ab5 | 794 | ret = rsnd_ssi_common_probe(mod, io, priv); |
4e7d606c | 795 | if (ret) |
b543b52a | 796 | return ret; |
4e7d606c | 797 | |
355cb84f | 798 | /* SSI probe might be called many times in MUX multi path */ |
b99305d2 | 799 | ret = rsnd_dma_attach(io, mod, &ssi->dma); |
8aefda50 | 800 | |
ff8f30e6 KM |
801 | return ret; |
802 | } | |
803 | ||
804 | static int rsnd_ssi_dma_remove(struct rsnd_mod *mod, | |
2c0fac19 | 805 | struct rsnd_dai_stream *io, |
690602fc | 806 | struct rsnd_priv *priv) |
97463e19 | 807 | { |
4e7d606c | 808 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
1f8754d4 KM |
809 | struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io); |
810 | ||
811 | /* Do nothing for SSI parent mod */ | |
812 | if (ssi_parent_mod == mod) | |
813 | return 0; | |
4e7d606c | 814 | |
4e7d606c | 815 | /* PIO will request IRQ again */ |
701172dc | 816 | free_irq(ssi->irq, mod); |
0af5c01a | 817 | |
97463e19 KM |
818 | return 0; |
819 | } | |
820 | ||
821 | static int rsnd_ssi_fallback(struct rsnd_mod *mod, | |
2c0fac19 | 822 | struct rsnd_dai_stream *io, |
690602fc | 823 | struct rsnd_priv *priv) |
ff8f30e6 | 824 | { |
d3a76823 KM |
825 | struct device *dev = rsnd_priv_to_dev(priv); |
826 | ||
d3a76823 KM |
827 | /* |
828 | * fallback to PIO | |
829 | * | |
830 | * SSI .probe might be called again. | |
831 | * see | |
832 | * rsnd_rdai_continuance_probe() | |
833 | */ | |
834 | mod->ops = &rsnd_ssi_pio_ops; | |
835 | ||
836 | dev_info(dev, "%s[%d] fallback to PIO mode\n", | |
837 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
838 | ||
ff8f30e6 KM |
839 | return 0; |
840 | } | |
841 | ||
9b99e9a7 KM |
842 | static struct dma_chan *rsnd_ssi_dma_req(struct rsnd_dai_stream *io, |
843 | struct rsnd_mod *mod) | |
d9288d0b | 844 | { |
72adc61f | 845 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
72adc61f KM |
846 | int is_play = rsnd_io_is_play(io); |
847 | char *name; | |
848 | ||
b415b4d3 | 849 | if (rsnd_ssi_use_busif(io)) |
72adc61f KM |
850 | name = is_play ? "rxu" : "txu"; |
851 | else | |
852 | name = is_play ? "rx" : "tx"; | |
853 | ||
854 | return rsnd_dma_request_channel(rsnd_ssi_of_node(priv), | |
855 | mod, name); | |
d9288d0b KM |
856 | } |
857 | ||
849fc82a | 858 | static struct rsnd_mod_ops rsnd_ssi_dma_ops = { |
8aefda50 | 859 | .name = SSI_NAME, |
72adc61f | 860 | .dma_req = rsnd_ssi_dma_req, |
ff8f30e6 KM |
861 | .probe = rsnd_ssi_dma_probe, |
862 | .remove = rsnd_ssi_dma_remove, | |
849fc82a KM |
863 | .init = rsnd_ssi_init, |
864 | .quit = rsnd_ssi_quit, | |
497debaa KM |
865 | .start = rsnd_ssi_start, |
866 | .stop = rsnd_ssi_stop, | |
c8e969a8 | 867 | .irq = rsnd_ssi_irq, |
098bd891 | 868 | .pcm_new = rsnd_ssi_pcm_new, |
97463e19 | 869 | .fallback = rsnd_ssi_fallback, |
919567d9 | 870 | .hw_params = rsnd_ssi_hw_params, |
849fc82a KM |
871 | }; |
872 | ||
05795411 KM |
873 | int rsnd_ssi_is_dma_mode(struct rsnd_mod *mod) |
874 | { | |
875 | return mod->ops == &rsnd_ssi_dma_ops; | |
876 | } | |
877 | ||
878 | ||
ae5c3223 KM |
879 | /* |
880 | * ssi mod function | |
881 | */ | |
b4c83b17 KM |
882 | static void rsnd_ssi_connect(struct rsnd_mod *mod, |
883 | struct rsnd_dai_stream *io) | |
884 | { | |
885 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); | |
886 | enum rsnd_mod_type types[] = { | |
887 | RSND_MOD_SSI, | |
888 | RSND_MOD_SSIM1, | |
889 | RSND_MOD_SSIM2, | |
890 | RSND_MOD_SSIM3, | |
891 | }; | |
892 | enum rsnd_mod_type type; | |
893 | int i; | |
894 | ||
895 | /* try SSI -> SSIM1 -> SSIM2 -> SSIM3 */ | |
896 | for (i = 0; i < ARRAY_SIZE(types); i++) { | |
897 | type = types[i]; | |
898 | if (!rsnd_io_to_mod(io, type)) { | |
899 | rsnd_dai_connect(mod, io, type); | |
900 | rsnd_set_slot(rdai, 2 * (i + 1), (i + 1)); | |
901 | return; | |
902 | } | |
903 | } | |
904 | } | |
905 | ||
906 | void rsnd_parse_connect_ssi(struct rsnd_dai *rdai, | |
907 | struct device_node *playback, | |
908 | struct device_node *capture) | |
909 | { | |
910 | struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); | |
911 | struct device_node *node; | |
912 | struct device_node *np; | |
913 | struct rsnd_mod *mod; | |
914 | int i; | |
915 | ||
916 | node = rsnd_ssi_of_node(priv); | |
917 | if (!node) | |
918 | return; | |
919 | ||
920 | i = 0; | |
921 | for_each_child_of_node(node, np) { | |
922 | mod = rsnd_ssi_mod_get(priv, i); | |
923 | if (np == playback) | |
924 | rsnd_ssi_connect(mod, &rdai->playback); | |
925 | if (np == capture) | |
926 | rsnd_ssi_connect(mod, &rdai->capture); | |
927 | i++; | |
928 | } | |
929 | ||
930 | of_node_put(node); | |
931 | } | |
932 | ||
7fa72cca KM |
933 | static void __rsnd_ssi_parse_hdmi_connection(struct rsnd_priv *priv, |
934 | struct rsnd_dai_stream *io, | |
935 | struct device_node *remote_ep) | |
936 | { | |
937 | struct device *dev = rsnd_priv_to_dev(priv); | |
938 | struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io); | |
939 | struct rsnd_ssi *ssi; | |
940 | ||
941 | if (!mod) | |
942 | return; | |
943 | ||
944 | ssi = rsnd_mod_to_ssi(mod); | |
945 | ||
946 | if (strstr(remote_ep->full_name, "hdmi0")) { | |
947 | ssi->flags |= RSND_SSI_HDMI0; | |
948 | dev_dbg(dev, "%s[%d] connected to HDMI0\n", | |
949 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
950 | } | |
951 | ||
952 | if (strstr(remote_ep->full_name, "hdmi1")) { | |
953 | ssi->flags |= RSND_SSI_HDMI1; | |
954 | dev_dbg(dev, "%s[%d] connected to HDMI1\n", | |
955 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
956 | } | |
957 | } | |
958 | ||
959 | void rsnd_ssi_parse_hdmi_connection(struct rsnd_priv *priv, | |
960 | struct device_node *endpoint, | |
961 | int dai_i) | |
962 | { | |
963 | struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i); | |
964 | struct device_node *remote_ep; | |
965 | ||
966 | remote_ep = of_graph_get_remote_endpoint(endpoint); | |
967 | if (!remote_ep) | |
968 | return; | |
969 | ||
970 | __rsnd_ssi_parse_hdmi_connection(priv, &rdai->playback, remote_ep); | |
971 | __rsnd_ssi_parse_hdmi_connection(priv, &rdai->capture, remote_ep); | |
972 | } | |
973 | ||
ae5c3223 KM |
974 | struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id) |
975 | { | |
8b14719b TI |
976 | if (WARN_ON(id < 0 || id >= rsnd_ssi_nr(priv))) |
977 | id = 0; | |
ae5c3223 | 978 | |
02534f2f | 979 | return rsnd_mod_get(rsnd_ssi_get(priv, id)); |
ae5c3223 KM |
980 | } |
981 | ||
b415b4d3 | 982 | int __rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod) |
7b5ce975 KM |
983 | { |
984 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
985 | ||
986 | return !!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_CLK_PIN_SHARE); | |
987 | } | |
988 | ||
5ba17b42 KM |
989 | static u32 *rsnd_ssi_get_status(struct rsnd_dai_stream *io, |
990 | struct rsnd_mod *mod, | |
991 | enum rsnd_mod_type type) | |
992 | { | |
993 | /* | |
994 | * SSIP (= SSI parent) needs to be special, otherwise, | |
995 | * 2nd SSI might doesn't start. see also rsnd_mod_call() | |
996 | * | |
997 | * We can't include parent SSI status on SSI, because we don't know | |
998 | * how many SSI requests parent SSI. Thus, it is localed on "io" now. | |
999 | * ex) trouble case | |
1000 | * Playback: SSI0 | |
1001 | * Capture : SSI1 (needs SSI0) | |
1002 | * | |
1003 | * 1) start Capture -> SSI0/SSI1 are started. | |
1004 | * 2) start Playback -> SSI0 doesn't work, because it is already | |
1005 | * marked as "started" on 1) | |
1006 | * | |
1007 | * OTOH, using each mod's status is good for MUX case. | |
1008 | * It doesn't need to start in 2nd start | |
1009 | * ex) | |
1010 | * IO-0: SRC0 -> CTU1 -+-> MUX -> DVC -> SSIU -> SSI0 | |
1011 | * | | |
1012 | * IO-1: SRC1 -> CTU2 -+ | |
1013 | * | |
1014 | * 1) start IO-0 -> start SSI0 | |
1015 | * 2) start IO-1 -> SSI0 doesn't need to start, because it is | |
1016 | * already started on 1) | |
1017 | */ | |
1018 | if (type == RSND_MOD_SSIP) | |
1019 | return &io->parent_ssi_status; | |
1020 | ||
1021 | return rsnd_mod_get_status(io, mod, type); | |
1022 | } | |
1023 | ||
2ea6b074 | 1024 | int rsnd_ssi_probe(struct rsnd_priv *priv) |
ae5c3223 | 1025 | { |
02534f2f KM |
1026 | struct device_node *node; |
1027 | struct device_node *np; | |
ae5c3223 KM |
1028 | struct device *dev = rsnd_priv_to_dev(priv); |
1029 | struct rsnd_mod_ops *ops; | |
1030 | struct clk *clk; | |
ae5c3223 KM |
1031 | struct rsnd_ssi *ssi; |
1032 | char name[RSND_SSI_NAME_SIZE]; | |
2f78dd7f | 1033 | int i, nr, ret; |
ae5c3223 | 1034 | |
02534f2f KM |
1035 | node = rsnd_ssi_of_node(priv); |
1036 | if (!node) | |
1037 | return -EINVAL; | |
1038 | ||
1039 | nr = of_get_child_count(node); | |
1040 | if (!nr) { | |
1041 | ret = -EINVAL; | |
1042 | goto rsnd_ssi_probe_done; | |
1043 | } | |
90e8e50f | 1044 | |
dd27d808 | 1045 | ssi = devm_kzalloc(dev, sizeof(*ssi) * nr, GFP_KERNEL); |
02534f2f KM |
1046 | if (!ssi) { |
1047 | ret = -ENOMEM; | |
1048 | goto rsnd_ssi_probe_done; | |
1049 | } | |
ae5c3223 | 1050 | |
dd27d808 KM |
1051 | priv->ssi = ssi; |
1052 | priv->ssi_nr = nr; | |
ae5c3223 | 1053 | |
02534f2f KM |
1054 | i = 0; |
1055 | for_each_child_of_node(node, np) { | |
1056 | ssi = rsnd_ssi_get(priv, i); | |
ae5c3223 | 1057 | |
8aefda50 KM |
1058 | snprintf(name, RSND_SSI_NAME_SIZE, "%s.%d", |
1059 | SSI_NAME, i); | |
ae5c3223 | 1060 | |
60dbb4f1 | 1061 | clk = devm_clk_get(dev, name); |
02534f2f KM |
1062 | if (IS_ERR(clk)) { |
1063 | ret = PTR_ERR(clk); | |
1064 | goto rsnd_ssi_probe_done; | |
1065 | } | |
ae5c3223 | 1066 | |
02534f2f KM |
1067 | if (of_get_property(np, "shared-pin", NULL)) |
1068 | ssi->flags |= RSND_SSI_CLK_PIN_SHARE; | |
1069 | ||
1070 | if (of_get_property(np, "no-busif", NULL)) | |
1071 | ssi->flags |= RSND_SSI_NO_BUSIF; | |
1072 | ||
1073 | ssi->irq = irq_of_parse_and_map(np, 0); | |
1074 | if (!ssi->irq) { | |
1075 | ret = -EINVAL; | |
1076 | goto rsnd_ssi_probe_done; | |
1077 | } | |
ae5c3223 | 1078 | |
51930295 | 1079 | if (of_property_read_bool(np, "pio-transfer")) |
ff8f30e6 | 1080 | ops = &rsnd_ssi_pio_ops; |
02534f2f KM |
1081 | else |
1082 | ops = &rsnd_ssi_dma_ops; | |
ae5c3223 | 1083 | |
b76e218a | 1084 | ret = rsnd_mod_init(priv, rsnd_mod_get(ssi), ops, clk, |
5ba17b42 | 1085 | rsnd_ssi_get_status, RSND_MOD_SSI, i); |
2f78dd7f | 1086 | if (ret) |
02534f2f KM |
1087 | goto rsnd_ssi_probe_done; |
1088 | ||
1089 | i++; | |
ae5c3223 KM |
1090 | } |
1091 | ||
02534f2f KM |
1092 | ret = 0; |
1093 | ||
1094 | rsnd_ssi_probe_done: | |
1095 | of_node_put(node); | |
1096 | ||
1097 | return ret; | |
ae5c3223 | 1098 | } |
2f78dd7f | 1099 | |
2ea6b074 | 1100 | void rsnd_ssi_remove(struct rsnd_priv *priv) |
2f78dd7f KM |
1101 | { |
1102 | struct rsnd_ssi *ssi; | |
1103 | int i; | |
1104 | ||
1105 | for_each_rsnd_ssi(ssi, priv, i) { | |
b76e218a | 1106 | rsnd_mod_quit(rsnd_mod_get(ssi)); |
2f78dd7f KM |
1107 | } |
1108 | } |