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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 */ | |
02534f2f | 93 | |
ae5c3223 KM |
94 | #define for_each_rsnd_ssi(pos, priv, i) \ |
95 | for (i = 0; \ | |
96 | (i < rsnd_ssi_nr(priv)) && \ | |
dd27d808 | 97 | ((pos) = ((struct rsnd_ssi *)(priv)->ssi + i)); \ |
ae5c3223 KM |
98 | i++) |
99 | ||
02534f2f | 100 | #define rsnd_ssi_get(priv, id) ((struct rsnd_ssi *)(priv->ssi) + id) |
232c00b6 | 101 | #define rsnd_ssi_to_dma(mod) ((ssi)->dma) |
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) |
bf9b29c7 KM |
104 | #define rsnd_ssi_flags_has(p, f) ((p)->flags & f) |
105 | #define rsnd_ssi_flags_set(p, f) ((p)->flags |= f) | |
e7d850dd | 106 | #define rsnd_ssi_is_parent(ssi, io) ((ssi) == rsnd_io_to_mod_ssip(io)) |
c308abe4 KM |
107 | #define rsnd_ssi_is_multi_slave(mod, io) \ |
108 | (rsnd_ssi_multi_slaves(io) & (1 << rsnd_mod_id(mod))) | |
fd9adcfd KM |
109 | #define rsnd_ssi_is_run_mods(mod, io) \ |
110 | (rsnd_ssi_run_mods(io) & (1 << rsnd_mod_id(mod))) | |
bb002f92 | 111 | #define rsnd_ssi_can_output_clk(mod) (!__rsnd_ssi_is_pin_sharing(mod)) |
ae5c3223 | 112 | |
7fa72cca KM |
113 | int rsnd_ssi_hdmi_port(struct rsnd_dai_stream *io) |
114 | { | |
115 | struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io); | |
116 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
117 | ||
bf9b29c7 | 118 | if (rsnd_ssi_flags_has(ssi, RSND_SSI_HDMI0)) |
7fa72cca KM |
119 | return RSND_SSI_HDMI_PORT0; |
120 | ||
bf9b29c7 | 121 | if (rsnd_ssi_flags_has(ssi, RSND_SSI_HDMI1)) |
7fa72cca KM |
122 | return RSND_SSI_HDMI_PORT1; |
123 | ||
124 | return 0; | |
125 | } | |
126 | ||
b415b4d3 | 127 | int rsnd_ssi_use_busif(struct rsnd_dai_stream *io) |
d9288d0b | 128 | { |
b415b4d3 | 129 | struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io); |
d9288d0b | 130 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
d9288d0b KM |
131 | int use_busif = 0; |
132 | ||
7b466fc6 KM |
133 | if (!rsnd_ssi_is_dma_mode(mod)) |
134 | return 0; | |
135 | ||
bf9b29c7 | 136 | if (!(rsnd_ssi_flags_has(ssi, RSND_SSI_NO_BUSIF))) |
d9288d0b KM |
137 | use_busif = 1; |
138 | if (rsnd_io_to_mod_src(io)) | |
139 | use_busif = 1; | |
140 | ||
141 | return use_busif; | |
142 | } | |
143 | ||
e10369d8 KM |
144 | static void rsnd_ssi_status_clear(struct rsnd_mod *mod) |
145 | { | |
146 | rsnd_mod_write(mod, SSISR, 0); | |
147 | } | |
148 | ||
149 | static u32 rsnd_ssi_status_get(struct rsnd_mod *mod) | |
150 | { | |
151 | return rsnd_mod_read(mod, SSISR); | |
152 | } | |
153 | ||
ae5c3223 KM |
154 | static void rsnd_ssi_status_check(struct rsnd_mod *mod, |
155 | u32 bit) | |
156 | { | |
157 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); | |
158 | struct device *dev = rsnd_priv_to_dev(priv); | |
159 | u32 status; | |
160 | int i; | |
161 | ||
162 | for (i = 0; i < 1024; i++) { | |
e10369d8 | 163 | status = rsnd_ssi_status_get(mod); |
ae5c3223 KM |
164 | if (status & bit) |
165 | return; | |
166 | ||
167 | udelay(50); | |
168 | } | |
169 | ||
1120dbff KM |
170 | dev_warn(dev, "%s[%d] status check failed\n", |
171 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
ae5c3223 KM |
172 | } |
173 | ||
4f5c634d | 174 | static u32 rsnd_ssi_multi_slaves(struct rsnd_dai_stream *io) |
b4c83b17 KM |
175 | { |
176 | struct rsnd_mod *mod; | |
b4c83b17 KM |
177 | enum rsnd_mod_type types[] = { |
178 | RSND_MOD_SSIM1, | |
179 | RSND_MOD_SSIM2, | |
180 | RSND_MOD_SSIM3, | |
181 | }; | |
182 | int i, mask; | |
183 | ||
b4c83b17 KM |
184 | mask = 0; |
185 | for (i = 0; i < ARRAY_SIZE(types); i++) { | |
186 | mod = rsnd_io_to_mod(io, types[i]); | |
187 | if (!mod) | |
188 | continue; | |
189 | ||
190 | mask |= 1 << rsnd_mod_id(mod); | |
191 | } | |
192 | ||
193 | return mask; | |
194 | } | |
195 | ||
fd9adcfd KM |
196 | static u32 rsnd_ssi_run_mods(struct rsnd_dai_stream *io) |
197 | { | |
198 | struct rsnd_mod *ssi_mod = rsnd_io_to_mod_ssi(io); | |
199 | struct rsnd_mod *ssi_parent_mod = rsnd_io_to_mod_ssip(io); | |
200 | ||
201 | return rsnd_ssi_multi_slaves_runtime(io) | | |
202 | 1 << rsnd_mod_id(ssi_mod) | | |
203 | 1 << rsnd_mod_id(ssi_parent_mod); | |
204 | } | |
205 | ||
4f5c634d KM |
206 | u32 rsnd_ssi_multi_slaves_runtime(struct rsnd_dai_stream *io) |
207 | { | |
eed76bb8 KM |
208 | if (rsnd_runtime_is_ssi_multi(io)) |
209 | return rsnd_ssi_multi_slaves(io); | |
4f5c634d KM |
210 | |
211 | return 0; | |
212 | } | |
213 | ||
947f4eb5 | 214 | unsigned int rsnd_ssi_clk_query(struct rsnd_priv *priv, |
ef4cf5d6 KM |
215 | int param1, int param2, int *idx) |
216 | { | |
217 | int ssi_clk_mul_table[] = { | |
218 | 1, 2, 4, 8, 16, 6, 12, | |
219 | }; | |
220 | int j, ret; | |
947f4eb5 | 221 | unsigned int main_rate; |
ef4cf5d6 KM |
222 | |
223 | for (j = 0; j < ARRAY_SIZE(ssi_clk_mul_table); j++) { | |
224 | ||
225 | /* | |
226 | * It will set SSIWSR.CONT here, but SSICR.CKDV = 000 | |
227 | * with it is not allowed. (SSIWSR.WS_MODE with | |
228 | * SSICR.CKDV = 000 is not allowed either). | |
229 | * Skip it. See SSICR.CKDV | |
230 | */ | |
231 | if (j == 0) | |
232 | continue; | |
233 | ||
234 | /* | |
235 | * this driver is assuming that | |
236 | * system word is 32bit x chan | |
237 | * see rsnd_ssi_init() | |
238 | */ | |
239 | main_rate = 32 * param1 * param2 * ssi_clk_mul_table[j]; | |
240 | ||
241 | ret = rsnd_adg_clk_query(priv, main_rate); | |
242 | if (ret < 0) | |
243 | continue; | |
244 | ||
245 | if (idx) | |
246 | *idx = j; | |
247 | ||
248 | return main_rate; | |
249 | } | |
250 | ||
947f4eb5 | 251 | return 0; |
ef4cf5d6 KM |
252 | } |
253 | ||
26d34b11 | 254 | static int rsnd_ssi_master_clk_start(struct rsnd_mod *mod, |
adcf7d5e | 255 | struct rsnd_dai_stream *io) |
ae5c3223 | 256 | { |
1b13d118 | 257 | struct rsnd_priv *priv = rsnd_io_to_priv(io); |
ae5c3223 | 258 | struct device *dev = rsnd_priv_to_dev(priv); |
e7d850dd | 259 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); |
26d34b11 | 260 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
eed76bb8 | 261 | int chan = rsnd_runtime_channel_for_ssi(io); |
ef4cf5d6 | 262 | int idx, ret; |
ae5c3223 | 263 | unsigned int main_rate; |
cbf1494f KM |
264 | unsigned int rate = rsnd_io_is_play(io) ? |
265 | rsnd_src_get_out_rate(priv, io) : | |
266 | rsnd_src_get_in_rate(priv, io); | |
ae5c3223 | 267 | |
e7d850dd KM |
268 | if (!rsnd_rdai_is_clk_master(rdai)) |
269 | return 0; | |
270 | ||
bb002f92 | 271 | if (!rsnd_ssi_can_output_clk(mod)) |
e7d850dd KM |
272 | return 0; |
273 | ||
b4c83b17 KM |
274 | if (rsnd_ssi_is_multi_slave(mod, io)) |
275 | return 0; | |
276 | ||
e7d850dd KM |
277 | if (ssi->usrcnt > 1) { |
278 | if (ssi->rate != rate) { | |
279 | dev_err(dev, "SSI parent/child should use same rate\n"); | |
280 | return -EINVAL; | |
281 | } | |
282 | ||
283 | return 0; | |
284 | } | |
285 | ||
ef4cf5d6 | 286 | main_rate = rsnd_ssi_clk_query(priv, rate, chan, &idx); |
947f4eb5 | 287 | if (!main_rate) { |
ef4cf5d6 KM |
288 | dev_err(dev, "unsupported clock rate\n"); |
289 | return -EIO; | |
290 | } | |
eae6fff4 | 291 | |
ef4cf5d6 KM |
292 | ret = rsnd_adg_ssi_clk_try_start(mod, main_rate); |
293 | if (ret < 0) | |
294 | return ret; | |
e7d850dd | 295 | |
597b046f KM |
296 | /* |
297 | * SSI clock will be output contiguously | |
298 | * by below settings. | |
299 | * This means, rsnd_ssi_master_clk_start() | |
300 | * and rsnd_ssi_register_setup() are necessary | |
301 | * for SSI parent | |
302 | * | |
303 | * SSICR : FORCE, SCKD, SWSD | |
304 | * SSIWSR : CONT | |
305 | */ | |
ef4cf5d6 KM |
306 | ssi->cr_clk = FORCE | SWL_32 | SCKD | SWSD | CKDV(idx); |
307 | ssi->wsr = CONT; | |
308 | ssi->rate = rate; | |
eae6fff4 | 309 | |
ef4cf5d6 KM |
310 | dev_dbg(dev, "%s[%d] outputs %u Hz\n", |
311 | rsnd_mod_name(mod), | |
312 | rsnd_mod_id(mod), rate); | |
ae5c3223 | 313 | |
ef4cf5d6 | 314 | return 0; |
ae5c3223 KM |
315 | } |
316 | ||
26d34b11 | 317 | static void rsnd_ssi_master_clk_stop(struct rsnd_mod *mod, |
e7d850dd | 318 | struct rsnd_dai_stream *io) |
ae5c3223 | 319 | { |
f708d944 | 320 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); |
26d34b11 | 321 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
3ba84f45 | 322 | |
e7d850dd | 323 | if (!rsnd_rdai_is_clk_master(rdai)) |
ae5c3223 | 324 | return; |
ae5c3223 | 325 | |
bb002f92 | 326 | if (!rsnd_ssi_can_output_clk(mod)) |
e7d850dd | 327 | return; |
ae5c3223 | 328 | |
e7d850dd KM |
329 | if (ssi->usrcnt > 1) |
330 | return; | |
919567d9 | 331 | |
e7d850dd KM |
332 | ssi->cr_clk = 0; |
333 | ssi->rate = 0; | |
ae5c3223 | 334 | |
e7d850dd | 335 | rsnd_adg_ssi_clk_stop(mod); |
ae5c3223 KM |
336 | } |
337 | ||
0dc6bf75 | 338 | static void rsnd_ssi_config_init(struct rsnd_mod *mod, |
840ada3b KM |
339 | struct rsnd_dai_stream *io) |
340 | { | |
341 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); | |
342 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); | |
26d34b11 | 343 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
840ada3b KM |
344 | u32 cr_own; |
345 | u32 cr_mode; | |
186fadc1 | 346 | u32 wsr; |
f98ed119 KM |
347 | int is_tdm; |
348 | ||
bf23c6a3 KM |
349 | if (rsnd_ssi_is_parent(mod, io)) |
350 | return; | |
351 | ||
eed76bb8 | 352 | is_tdm = rsnd_runtime_is_ssi_tdm(io); |
840ada3b KM |
353 | |
354 | /* | |
355 | * always use 32bit system word. | |
356 | * see also rsnd_ssi_master_clk_enable() | |
357 | */ | |
90431eb4 | 358 | cr_own = FORCE | SWL_32; |
840ada3b KM |
359 | |
360 | if (rdai->bit_clk_inv) | |
361 | cr_own |= SCKP; | |
f98ed119 | 362 | if (rdai->frm_clk_inv ^ is_tdm) |
840ada3b KM |
363 | cr_own |= SWSP; |
364 | if (rdai->data_alignment) | |
365 | cr_own |= SDTA; | |
366 | if (rdai->sys_delay) | |
367 | cr_own |= DEL; | |
368 | if (rsnd_io_is_play(io)) | |
369 | cr_own |= TRMD; | |
370 | ||
371 | switch (runtime->sample_bits) { | |
372 | case 16: | |
373 | cr_own |= DWL_16; | |
374 | break; | |
375 | case 32: | |
376 | cr_own |= DWL_24; | |
377 | break; | |
840ada3b KM |
378 | } |
379 | ||
26d34b11 | 380 | if (rsnd_ssi_is_dma_mode(mod)) { |
840ada3b KM |
381 | cr_mode = UIEN | OIEN | /* over/under run */ |
382 | DMEN; /* DMA : enable DMA */ | |
383 | } else { | |
384 | cr_mode = DIEN; /* PIO : enable Data interrupt */ | |
385 | } | |
386 | ||
186fadc1 KM |
387 | /* |
388 | * TDM Extend Mode | |
389 | * see | |
390 | * rsnd_ssiu_init_gen2() | |
391 | */ | |
392 | wsr = ssi->wsr; | |
f98ed119 | 393 | if (is_tdm) { |
186fadc1 KM |
394 | wsr |= WS_MODE; |
395 | cr_own |= CHNL_8; | |
396 | } | |
397 | ||
840ada3b KM |
398 | ssi->cr_own = cr_own; |
399 | ssi->cr_mode = cr_mode; | |
186fadc1 | 400 | ssi->wsr = wsr; |
0dc6bf75 | 401 | } |
840ada3b | 402 | |
0dc6bf75 KM |
403 | static void rsnd_ssi_register_setup(struct rsnd_mod *mod) |
404 | { | |
405 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
406 | ||
407 | rsnd_mod_write(mod, SSIWSR, ssi->wsr); | |
408 | rsnd_mod_write(mod, SSICR, ssi->cr_own | | |
409 | ssi->cr_clk | | |
597b046f KM |
410 | ssi->cr_mode | |
411 | ssi->cr_en); | |
840ada3b KM |
412 | } |
413 | ||
a97a06c7 KM |
414 | static void rsnd_ssi_pointer_init(struct rsnd_mod *mod, |
415 | struct rsnd_dai_stream *io) | |
416 | { | |
417 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
418 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); | |
419 | ||
420 | ssi->byte_pos = 0; | |
421 | ssi->period_pos = 0; | |
422 | ssi->byte_per_period = runtime->period_size * | |
423 | runtime->channels * | |
424 | samples_to_bytes(runtime, 1); | |
425 | ssi->next_period_byte = ssi->byte_per_period; | |
426 | } | |
427 | ||
428 | static int rsnd_ssi_pointer_offset(struct rsnd_mod *mod, | |
429 | struct rsnd_dai_stream *io, | |
430 | int additional) | |
431 | { | |
432 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
433 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); | |
434 | int pos = ssi->byte_pos + additional; | |
435 | ||
436 | pos %= (runtime->periods * ssi->byte_per_period); | |
437 | ||
438 | return pos; | |
439 | } | |
440 | ||
441 | static bool rsnd_ssi_pointer_update(struct rsnd_mod *mod, | |
442 | struct rsnd_dai_stream *io, | |
443 | int byte) | |
444 | { | |
445 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
446 | ||
447 | ssi->byte_pos += byte; | |
448 | ||
449 | if (ssi->byte_pos >= ssi->next_period_byte) { | |
450 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); | |
451 | ||
452 | ssi->period_pos++; | |
453 | ssi->next_period_byte += ssi->byte_per_period; | |
454 | ||
455 | if (ssi->period_pos >= runtime->periods) { | |
456 | ssi->byte_pos = 0; | |
457 | ssi->period_pos = 0; | |
458 | ssi->next_period_byte = ssi->byte_per_period; | |
459 | } | |
460 | ||
461 | return true; | |
462 | } | |
463 | ||
464 | return false; | |
465 | } | |
466 | ||
ae5c3223 KM |
467 | /* |
468 | * SSI mod common functions | |
469 | */ | |
470 | static int rsnd_ssi_init(struct rsnd_mod *mod, | |
2c0fac19 | 471 | struct rsnd_dai_stream *io, |
690602fc | 472 | struct rsnd_priv *priv) |
ae5c3223 KM |
473 | { |
474 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
e7d850dd KM |
475 | int ret; |
476 | ||
fd9adcfd KM |
477 | if (!rsnd_ssi_is_run_mods(mod, io)) |
478 | return 0; | |
479 | ||
a97a06c7 KM |
480 | rsnd_ssi_pointer_init(mod, io); |
481 | ||
e7d850dd KM |
482 | ssi->usrcnt++; |
483 | ||
484 | rsnd_mod_power_on(mod); | |
485 | ||
26d34b11 | 486 | ret = rsnd_ssi_master_clk_start(mod, io); |
e7d850dd KM |
487 | if (ret < 0) |
488 | return ret; | |
489 | ||
bf23c6a3 | 490 | rsnd_ssi_config_init(mod, io); |
ae5c3223 | 491 | |
0dc6bf75 | 492 | rsnd_ssi_register_setup(mod); |
e7d850dd | 493 | |
e7d850dd KM |
494 | /* clear error status */ |
495 | rsnd_ssi_status_clear(mod); | |
496 | ||
ae5c3223 KM |
497 | return 0; |
498 | } | |
499 | ||
500 | static int rsnd_ssi_quit(struct rsnd_mod *mod, | |
2c0fac19 | 501 | struct rsnd_dai_stream *io, |
690602fc | 502 | struct rsnd_priv *priv) |
ae5c3223 KM |
503 | { |
504 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
ae5c3223 KM |
505 | struct device *dev = rsnd_priv_to_dev(priv); |
506 | ||
fd9adcfd KM |
507 | if (!rsnd_ssi_is_run_mods(mod, io)) |
508 | return 0; | |
509 | ||
e5d9cfc6 AH |
510 | if (!ssi->usrcnt) { |
511 | dev_err(dev, "%s[%d] usrcnt error\n", | |
512 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
513 | return -EIO; | |
514 | } | |
e7d850dd | 515 | |
b5b442ab | 516 | if (!rsnd_ssi_is_parent(mod, io)) |
e5d9cfc6 | 517 | ssi->cr_own = 0; |
ae5c3223 | 518 | |
26d34b11 | 519 | rsnd_ssi_master_clk_stop(mod, io); |
e7d850dd KM |
520 | |
521 | rsnd_mod_power_off(mod); | |
522 | ||
523 | ssi->usrcnt--; | |
524 | ||
ae5c3223 KM |
525 | return 0; |
526 | } | |
527 | ||
919567d9 | 528 | static int rsnd_ssi_hw_params(struct rsnd_mod *mod, |
2c0fac19 | 529 | struct rsnd_dai_stream *io, |
919567d9 KM |
530 | struct snd_pcm_substream *substream, |
531 | struct snd_pcm_hw_params *params) | |
532 | { | |
533 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
919567d9 KM |
534 | int chan = params_channels(params); |
535 | ||
536 | /* | |
6bf66b1c KM |
537 | * snd_pcm_ops::hw_params will be called *before* |
538 | * snd_soc_dai_ops::trigger. Thus, ssi->usrcnt is 0 | |
539 | * in 1st call. | |
919567d9 | 540 | */ |
6bf66b1c | 541 | if (ssi->usrcnt) { |
919567d9 | 542 | /* |
6bf66b1c KM |
543 | * Already working. |
544 | * It will happen if SSI has parent/child connection. | |
919567d9 KM |
545 | * it is error if child <-> parent SSI uses |
546 | * different channels. | |
547 | */ | |
548 | if (ssi->chan != chan) | |
549 | return -EIO; | |
550 | } | |
551 | ||
919567d9 | 552 | ssi->chan = chan; |
919567d9 KM |
553 | |
554 | return 0; | |
555 | } | |
556 | ||
6a25c8da KM |
557 | static int rsnd_ssi_start(struct rsnd_mod *mod, |
558 | struct rsnd_dai_stream *io, | |
559 | struct rsnd_priv *priv) | |
e7d850dd | 560 | { |
597b046f KM |
561 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
562 | ||
fd9adcfd KM |
563 | if (!rsnd_ssi_is_run_mods(mod, io)) |
564 | return 0; | |
565 | ||
b4c83b17 KM |
566 | /* |
567 | * EN will be set via SSIU :: SSI_CONTROL | |
568 | * if Multi channel mode | |
569 | */ | |
4f5c634d | 570 | if (rsnd_ssi_multi_slaves_runtime(io)) |
0dc6bf75 | 571 | return 0; |
e7d850dd | 572 | |
597b046f KM |
573 | /* |
574 | * EN is for data output. | |
575 | * SSI parent EN is not needed. | |
576 | */ | |
577 | if (rsnd_ssi_is_parent(mod, io)) | |
578 | return 0; | |
579 | ||
580 | ssi->cr_en = EN; | |
581 | ||
582 | rsnd_mod_write(mod, SSICR, ssi->cr_own | | |
583 | ssi->cr_clk | | |
584 | ssi->cr_mode | | |
585 | ssi->cr_en); | |
e7d850dd KM |
586 | |
587 | return 0; | |
588 | } | |
589 | ||
6a25c8da KM |
590 | static int rsnd_ssi_stop(struct rsnd_mod *mod, |
591 | struct rsnd_dai_stream *io, | |
592 | struct rsnd_priv *priv) | |
e7d850dd | 593 | { |
6a25c8da KM |
594 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
595 | u32 cr; | |
596 | ||
fd9adcfd KM |
597 | if (!rsnd_ssi_is_run_mods(mod, io)) |
598 | return 0; | |
599 | ||
597b046f | 600 | if (rsnd_ssi_is_parent(mod, io)) |
6a25c8da | 601 | return 0; |
e7d850dd KM |
602 | |
603 | /* | |
604 | * disable all IRQ, | |
605 | * and, wait all data was sent | |
606 | */ | |
607 | cr = ssi->cr_own | | |
608 | ssi->cr_clk; | |
4e7d606c | 609 | |
e7d850dd KM |
610 | rsnd_mod_write(mod, SSICR, cr | EN); |
611 | rsnd_ssi_status_check(mod, DIRQ); | |
4e7d606c | 612 | |
e7d850dd KM |
613 | /* |
614 | * disable SSI, | |
615 | * and, wait idle state | |
616 | */ | |
617 | rsnd_mod_write(mod, SSICR, cr); /* disabled all */ | |
618 | rsnd_ssi_status_check(mod, IIRQ); | |
4e7d606c | 619 | |
597b046f KM |
620 | ssi->cr_en = 0; |
621 | ||
4e7d606c KM |
622 | return 0; |
623 | } | |
624 | ||
615fb6c7 KM |
625 | static int rsnd_ssi_irq(struct rsnd_mod *mod, |
626 | struct rsnd_dai_stream *io, | |
627 | struct rsnd_priv *priv, | |
628 | int enable) | |
629 | { | |
630 | u32 val = 0; | |
631 | ||
632 | if (rsnd_is_gen1(priv)) | |
633 | return 0; | |
634 | ||
635 | if (rsnd_ssi_is_parent(mod, io)) | |
636 | return 0; | |
637 | ||
fd9adcfd KM |
638 | if (!rsnd_ssi_is_run_mods(mod, io)) |
639 | return 0; | |
640 | ||
615fb6c7 KM |
641 | if (enable) |
642 | val = rsnd_ssi_is_dma_mode(mod) ? 0x0e000000 : 0x0f000000; | |
643 | ||
644 | rsnd_mod_write(mod, SSI_INT_ENABLE, val); | |
645 | ||
646 | return 0; | |
647 | } | |
648 | ||
bfc0cfe6 KM |
649 | static void __rsnd_ssi_interrupt(struct rsnd_mod *mod, |
650 | struct rsnd_dai_stream *io) | |
ae5c3223 | 651 | { |
690602fc | 652 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
765ae7c8 | 653 | int is_dma = rsnd_ssi_is_dma_mode(mod); |
02299d98 | 654 | u32 status; |
75defee0 | 655 | bool elapsed = false; |
6a25c8da | 656 | bool stop = false; |
02299d98 KM |
657 | |
658 | spin_lock(&priv->lock); | |
ae5c3223 | 659 | |
02299d98 | 660 | /* ignore all cases if not working */ |
d5bbe7de | 661 | if (!rsnd_io_is_working(io)) |
02299d98 KM |
662 | goto rsnd_ssi_interrupt_out; |
663 | ||
6a25c8da | 664 | status = rsnd_ssi_status_get(mod); |
4e7d606c KM |
665 | |
666 | /* PIO only */ | |
765ae7c8 | 667 | if (!is_dma && (status & DIRQ)) { |
ae5c3223 KM |
668 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
669 | u32 *buf = (u32 *)(runtime->dma_area + | |
a97a06c7 | 670 | rsnd_ssi_pointer_offset(mod, io, 0)); |
7819a942 KM |
671 | int shift = 0; |
672 | ||
673 | switch (runtime->sample_bits) { | |
674 | case 32: | |
675 | shift = 8; | |
676 | break; | |
677 | } | |
ae5c3223 | 678 | |
ae5c3223 KM |
679 | /* |
680 | * 8/16/32 data can be assesse to TDR/RDR register | |
681 | * directly as 32bit data | |
682 | * see rsnd_ssi_init() | |
683 | */ | |
985a4f6e | 684 | if (rsnd_io_is_play(io)) |
7819a942 | 685 | rsnd_mod_write(mod, SSITDR, (*buf) << shift); |
ae5c3223 | 686 | else |
7819a942 | 687 | *buf = (rsnd_mod_read(mod, SSIRDR) >> shift); |
ae5c3223 | 688 | |
a97a06c7 | 689 | elapsed = rsnd_ssi_pointer_update(mod, io, sizeof(*buf)); |
4e7d606c | 690 | } |
ae5c3223 | 691 | |
12927a8f | 692 | /* DMA only */ |
6a25c8da KM |
693 | if (is_dma && (status & (UIRQ | OIRQ))) |
694 | stop = true; | |
69e32a58 | 695 | |
5342dff2 | 696 | rsnd_ssi_status_clear(mod); |
02299d98 KM |
697 | rsnd_ssi_interrupt_out: |
698 | spin_unlock(&priv->lock); | |
699 | ||
75defee0 KM |
700 | if (elapsed) |
701 | rsnd_dai_period_elapsed(io); | |
6a25c8da KM |
702 | |
703 | if (stop) | |
704 | snd_pcm_stop_xrun(io->substream); | |
705 | ||
bfc0cfe6 KM |
706 | } |
707 | ||
708 | static irqreturn_t rsnd_ssi_interrupt(int irq, void *data) | |
709 | { | |
710 | struct rsnd_mod *mod = data; | |
711 | ||
712 | rsnd_mod_interrupt(mod, __rsnd_ssi_interrupt); | |
75defee0 | 713 | |
4e7d606c | 714 | return IRQ_HANDLED; |
ae5c3223 KM |
715 | } |
716 | ||
6cfad789 KM |
717 | /* |
718 | * SSI PIO | |
719 | */ | |
e7d850dd | 720 | static void rsnd_ssi_parent_attach(struct rsnd_mod *mod, |
098bd891 | 721 | struct rsnd_dai_stream *io) |
e7d850dd | 722 | { |
098bd891 KM |
723 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); |
724 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); | |
725 | ||
e7d850dd KM |
726 | if (!__rsnd_ssi_is_pin_sharing(mod)) |
727 | return; | |
728 | ||
098bd891 KM |
729 | if (!rsnd_rdai_is_clk_master(rdai)) |
730 | return; | |
731 | ||
e7d850dd KM |
732 | switch (rsnd_mod_id(mod)) { |
733 | case 1: | |
734 | case 2: | |
735 | rsnd_dai_connect(rsnd_ssi_mod_get(priv, 0), io, RSND_MOD_SSIP); | |
736 | break; | |
737 | case 4: | |
738 | rsnd_dai_connect(rsnd_ssi_mod_get(priv, 3), io, RSND_MOD_SSIP); | |
739 | break; | |
740 | case 8: | |
741 | rsnd_dai_connect(rsnd_ssi_mod_get(priv, 7), io, RSND_MOD_SSIP); | |
742 | break; | |
743 | } | |
744 | } | |
745 | ||
098bd891 KM |
746 | static int rsnd_ssi_pcm_new(struct rsnd_mod *mod, |
747 | struct rsnd_dai_stream *io, | |
748 | struct snd_soc_pcm_runtime *rtd) | |
749 | { | |
750 | /* | |
751 | * rsnd_rdai_is_clk_master() will be enabled after set_fmt, | |
752 | * and, pcm_new will be called after it. | |
753 | * This function reuse pcm_new at this point. | |
754 | */ | |
755 | rsnd_ssi_parent_attach(mod, io); | |
756 | ||
757 | return 0; | |
758 | } | |
759 | ||
c7f69ab5 KM |
760 | static int rsnd_ssi_common_probe(struct rsnd_mod *mod, |
761 | struct rsnd_dai_stream *io, | |
762 | struct rsnd_priv *priv) | |
ff8f30e6 | 763 | { |
ff8f30e6 KM |
764 | struct device *dev = rsnd_priv_to_dev(priv); |
765 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
ff8f30e6 KM |
766 | int ret; |
767 | ||
b4c83b17 KM |
768 | /* |
769 | * SSIP/SSIU/IRQ are not needed on | |
770 | * SSI Multi slaves | |
771 | */ | |
772 | if (rsnd_ssi_is_multi_slave(mod, io)) | |
773 | return 0; | |
774 | ||
098bd891 KM |
775 | /* |
776 | * It can't judge ssi parent at this point | |
777 | * see rsnd_ssi_pcm_new() | |
778 | */ | |
e7d850dd | 779 | |
c7f69ab5 KM |
780 | ret = rsnd_ssiu_attach(io, mod); |
781 | if (ret < 0) | |
782 | return ret; | |
783 | ||
701172dc KM |
784 | /* |
785 | * SSI might be called again as PIO fallback | |
786 | * It is easy to manual handling for IRQ request/free | |
787 | */ | |
788 | ret = request_irq(ssi->irq, | |
789 | rsnd_ssi_interrupt, | |
790 | IRQF_SHARED, | |
791 | dev_name(dev), mod); | |
8aefda50 | 792 | |
ff8f30e6 KM |
793 | return ret; |
794 | } | |
795 | ||
213691c7 KM |
796 | static int rsnd_ssi_common_remove(struct rsnd_mod *mod, |
797 | struct rsnd_dai_stream *io, | |
798 | struct rsnd_priv *priv) | |
799 | { | |
800 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
801 | struct rsnd_mod *pure_ssi_mod = rsnd_io_to_mod_ssi(io); | |
802 | ||
803 | /* Do nothing if non SSI (= SSI parent, multi SSI) mod */ | |
804 | if (pure_ssi_mod != mod) | |
805 | return 0; | |
806 | ||
807 | /* PIO will request IRQ again */ | |
808 | free_irq(ssi->irq, mod); | |
809 | ||
810 | return 0; | |
811 | } | |
812 | ||
07b7acb5 KM |
813 | static int rsnd_ssi_pointer(struct rsnd_mod *mod, |
814 | struct rsnd_dai_stream *io, | |
815 | snd_pcm_uframes_t *pointer) | |
816 | { | |
a97a06c7 | 817 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
07b7acb5 KM |
818 | struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io); |
819 | ||
a97a06c7 | 820 | *pointer = bytes_to_frames(runtime, ssi->byte_pos); |
07b7acb5 KM |
821 | |
822 | return 0; | |
823 | } | |
824 | ||
ae5c3223 | 825 | static struct rsnd_mod_ops rsnd_ssi_pio_ops = { |
8aefda50 | 826 | .name = SSI_NAME, |
c7f69ab5 | 827 | .probe = rsnd_ssi_common_probe, |
213691c7 | 828 | .remove = rsnd_ssi_common_remove, |
ae5c3223 KM |
829 | .init = rsnd_ssi_init, |
830 | .quit = rsnd_ssi_quit, | |
49229850 KM |
831 | .start = rsnd_ssi_start, |
832 | .stop = rsnd_ssi_stop, | |
b5b442ab | 833 | .irq = rsnd_ssi_irq, |
07b7acb5 | 834 | .pointer= rsnd_ssi_pointer, |
098bd891 | 835 | .pcm_new = rsnd_ssi_pcm_new, |
919567d9 | 836 | .hw_params = rsnd_ssi_hw_params, |
ae5c3223 KM |
837 | }; |
838 | ||
ff8f30e6 | 839 | static int rsnd_ssi_dma_probe(struct rsnd_mod *mod, |
2c0fac19 | 840 | struct rsnd_dai_stream *io, |
690602fc | 841 | struct rsnd_priv *priv) |
ff8f30e6 | 842 | { |
ff8f30e6 | 843 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); |
ff8f30e6 KM |
844 | int ret; |
845 | ||
b4c83b17 KM |
846 | /* |
847 | * SSIP/SSIU/IRQ/DMA are not needed on | |
848 | * SSI Multi slaves | |
849 | */ | |
850 | if (rsnd_ssi_is_multi_slave(mod, io)) | |
851 | return 0; | |
852 | ||
c7f69ab5 | 853 | ret = rsnd_ssi_common_probe(mod, io, priv); |
4e7d606c | 854 | if (ret) |
b543b52a | 855 | return ret; |
4e7d606c | 856 | |
355cb84f | 857 | /* SSI probe might be called many times in MUX multi path */ |
b99305d2 | 858 | ret = rsnd_dma_attach(io, mod, &ssi->dma); |
8aefda50 | 859 | |
ff8f30e6 KM |
860 | return ret; |
861 | } | |
862 | ||
97463e19 | 863 | static int rsnd_ssi_fallback(struct rsnd_mod *mod, |
2c0fac19 | 864 | struct rsnd_dai_stream *io, |
690602fc | 865 | struct rsnd_priv *priv) |
ff8f30e6 | 866 | { |
d3a76823 KM |
867 | struct device *dev = rsnd_priv_to_dev(priv); |
868 | ||
d3a76823 KM |
869 | /* |
870 | * fallback to PIO | |
871 | * | |
872 | * SSI .probe might be called again. | |
873 | * see | |
874 | * rsnd_rdai_continuance_probe() | |
875 | */ | |
876 | mod->ops = &rsnd_ssi_pio_ops; | |
877 | ||
878 | dev_info(dev, "%s[%d] fallback to PIO mode\n", | |
879 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
880 | ||
ff8f30e6 KM |
881 | return 0; |
882 | } | |
883 | ||
9b99e9a7 KM |
884 | static struct dma_chan *rsnd_ssi_dma_req(struct rsnd_dai_stream *io, |
885 | struct rsnd_mod *mod) | |
d9288d0b | 886 | { |
72adc61f | 887 | struct rsnd_priv *priv = rsnd_mod_to_priv(mod); |
72adc61f KM |
888 | int is_play = rsnd_io_is_play(io); |
889 | char *name; | |
890 | ||
b415b4d3 | 891 | if (rsnd_ssi_use_busif(io)) |
72adc61f KM |
892 | name = is_play ? "rxu" : "txu"; |
893 | else | |
894 | name = is_play ? "rx" : "tx"; | |
895 | ||
896 | return rsnd_dma_request_channel(rsnd_ssi_of_node(priv), | |
897 | mod, name); | |
d9288d0b KM |
898 | } |
899 | ||
849fc82a | 900 | static struct rsnd_mod_ops rsnd_ssi_dma_ops = { |
8aefda50 | 901 | .name = SSI_NAME, |
72adc61f | 902 | .dma_req = rsnd_ssi_dma_req, |
ff8f30e6 | 903 | .probe = rsnd_ssi_dma_probe, |
213691c7 | 904 | .remove = rsnd_ssi_common_remove, |
849fc82a KM |
905 | .init = rsnd_ssi_init, |
906 | .quit = rsnd_ssi_quit, | |
497debaa KM |
907 | .start = rsnd_ssi_start, |
908 | .stop = rsnd_ssi_stop, | |
c8e969a8 | 909 | .irq = rsnd_ssi_irq, |
098bd891 | 910 | .pcm_new = rsnd_ssi_pcm_new, |
97463e19 | 911 | .fallback = rsnd_ssi_fallback, |
919567d9 | 912 | .hw_params = rsnd_ssi_hw_params, |
849fc82a KM |
913 | }; |
914 | ||
05795411 KM |
915 | int rsnd_ssi_is_dma_mode(struct rsnd_mod *mod) |
916 | { | |
917 | return mod->ops == &rsnd_ssi_dma_ops; | |
918 | } | |
919 | ||
920 | ||
ae5c3223 KM |
921 | /* |
922 | * ssi mod function | |
923 | */ | |
b4c83b17 KM |
924 | static void rsnd_ssi_connect(struct rsnd_mod *mod, |
925 | struct rsnd_dai_stream *io) | |
926 | { | |
927 | struct rsnd_dai *rdai = rsnd_io_to_rdai(io); | |
928 | enum rsnd_mod_type types[] = { | |
929 | RSND_MOD_SSI, | |
930 | RSND_MOD_SSIM1, | |
931 | RSND_MOD_SSIM2, | |
932 | RSND_MOD_SSIM3, | |
933 | }; | |
934 | enum rsnd_mod_type type; | |
935 | int i; | |
936 | ||
937 | /* try SSI -> SSIM1 -> SSIM2 -> SSIM3 */ | |
938 | for (i = 0; i < ARRAY_SIZE(types); i++) { | |
939 | type = types[i]; | |
940 | if (!rsnd_io_to_mod(io, type)) { | |
941 | rsnd_dai_connect(mod, io, type); | |
1ff9593d KM |
942 | rsnd_rdai_channels_set(rdai, (i + 1) * 2); |
943 | rsnd_rdai_ssi_lane_set(rdai, (i + 1)); | |
b4c83b17 KM |
944 | return; |
945 | } | |
946 | } | |
947 | } | |
948 | ||
949 | void rsnd_parse_connect_ssi(struct rsnd_dai *rdai, | |
950 | struct device_node *playback, | |
951 | struct device_node *capture) | |
952 | { | |
953 | struct rsnd_priv *priv = rsnd_rdai_to_priv(rdai); | |
954 | struct device_node *node; | |
955 | struct device_node *np; | |
956 | struct rsnd_mod *mod; | |
957 | int i; | |
958 | ||
959 | node = rsnd_ssi_of_node(priv); | |
960 | if (!node) | |
961 | return; | |
962 | ||
963 | i = 0; | |
964 | for_each_child_of_node(node, np) { | |
965 | mod = rsnd_ssi_mod_get(priv, i); | |
966 | if (np == playback) | |
967 | rsnd_ssi_connect(mod, &rdai->playback); | |
968 | if (np == capture) | |
969 | rsnd_ssi_connect(mod, &rdai->capture); | |
970 | i++; | |
971 | } | |
972 | ||
973 | of_node_put(node); | |
974 | } | |
975 | ||
7fa72cca KM |
976 | static void __rsnd_ssi_parse_hdmi_connection(struct rsnd_priv *priv, |
977 | struct rsnd_dai_stream *io, | |
978 | struct device_node *remote_ep) | |
979 | { | |
980 | struct device *dev = rsnd_priv_to_dev(priv); | |
981 | struct rsnd_mod *mod = rsnd_io_to_mod_ssi(io); | |
982 | struct rsnd_ssi *ssi; | |
983 | ||
984 | if (!mod) | |
985 | return; | |
986 | ||
987 | ssi = rsnd_mod_to_ssi(mod); | |
988 | ||
989 | if (strstr(remote_ep->full_name, "hdmi0")) { | |
bf9b29c7 | 990 | rsnd_ssi_flags_set(ssi, RSND_SSI_HDMI0); |
7fa72cca KM |
991 | dev_dbg(dev, "%s[%d] connected to HDMI0\n", |
992 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
993 | } | |
994 | ||
995 | if (strstr(remote_ep->full_name, "hdmi1")) { | |
bf9b29c7 | 996 | rsnd_ssi_flags_set(ssi, RSND_SSI_HDMI1); |
7fa72cca KM |
997 | dev_dbg(dev, "%s[%d] connected to HDMI1\n", |
998 | rsnd_mod_name(mod), rsnd_mod_id(mod)); | |
999 | } | |
1000 | } | |
1001 | ||
1002 | void rsnd_ssi_parse_hdmi_connection(struct rsnd_priv *priv, | |
1003 | struct device_node *endpoint, | |
1004 | int dai_i) | |
1005 | { | |
1006 | struct rsnd_dai *rdai = rsnd_rdai_get(priv, dai_i); | |
1007 | struct device_node *remote_ep; | |
1008 | ||
1009 | remote_ep = of_graph_get_remote_endpoint(endpoint); | |
1010 | if (!remote_ep) | |
1011 | return; | |
1012 | ||
1013 | __rsnd_ssi_parse_hdmi_connection(priv, &rdai->playback, remote_ep); | |
1014 | __rsnd_ssi_parse_hdmi_connection(priv, &rdai->capture, remote_ep); | |
1015 | } | |
1016 | ||
ae5c3223 KM |
1017 | struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id) |
1018 | { | |
8b14719b TI |
1019 | if (WARN_ON(id < 0 || id >= rsnd_ssi_nr(priv))) |
1020 | id = 0; | |
ae5c3223 | 1021 | |
02534f2f | 1022 | return rsnd_mod_get(rsnd_ssi_get(priv, id)); |
ae5c3223 KM |
1023 | } |
1024 | ||
b415b4d3 | 1025 | int __rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod) |
7b5ce975 KM |
1026 | { |
1027 | struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); | |
1028 | ||
bf9b29c7 | 1029 | return !!(rsnd_ssi_flags_has(ssi, RSND_SSI_CLK_PIN_SHARE)); |
7b5ce975 KM |
1030 | } |
1031 | ||
5ba17b42 KM |
1032 | static u32 *rsnd_ssi_get_status(struct rsnd_dai_stream *io, |
1033 | struct rsnd_mod *mod, | |
1034 | enum rsnd_mod_type type) | |
1035 | { | |
1036 | /* | |
1037 | * SSIP (= SSI parent) needs to be special, otherwise, | |
1038 | * 2nd SSI might doesn't start. see also rsnd_mod_call() | |
1039 | * | |
1040 | * We can't include parent SSI status on SSI, because we don't know | |
1041 | * how many SSI requests parent SSI. Thus, it is localed on "io" now. | |
1042 | * ex) trouble case | |
1043 | * Playback: SSI0 | |
1044 | * Capture : SSI1 (needs SSI0) | |
1045 | * | |
1046 | * 1) start Capture -> SSI0/SSI1 are started. | |
1047 | * 2) start Playback -> SSI0 doesn't work, because it is already | |
1048 | * marked as "started" on 1) | |
1049 | * | |
1050 | * OTOH, using each mod's status is good for MUX case. | |
1051 | * It doesn't need to start in 2nd start | |
1052 | * ex) | |
1053 | * IO-0: SRC0 -> CTU1 -+-> MUX -> DVC -> SSIU -> SSI0 | |
1054 | * | | |
1055 | * IO-1: SRC1 -> CTU2 -+ | |
1056 | * | |
1057 | * 1) start IO-0 -> start SSI0 | |
1058 | * 2) start IO-1 -> SSI0 doesn't need to start, because it is | |
1059 | * already started on 1) | |
1060 | */ | |
1061 | if (type == RSND_MOD_SSIP) | |
1062 | return &io->parent_ssi_status; | |
1063 | ||
1064 | return rsnd_mod_get_status(io, mod, type); | |
1065 | } | |
1066 | ||
2ea6b074 | 1067 | int rsnd_ssi_probe(struct rsnd_priv *priv) |
ae5c3223 | 1068 | { |
02534f2f KM |
1069 | struct device_node *node; |
1070 | struct device_node *np; | |
ae5c3223 KM |
1071 | struct device *dev = rsnd_priv_to_dev(priv); |
1072 | struct rsnd_mod_ops *ops; | |
1073 | struct clk *clk; | |
ae5c3223 KM |
1074 | struct rsnd_ssi *ssi; |
1075 | char name[RSND_SSI_NAME_SIZE]; | |
2f78dd7f | 1076 | int i, nr, ret; |
ae5c3223 | 1077 | |
02534f2f KM |
1078 | node = rsnd_ssi_of_node(priv); |
1079 | if (!node) | |
1080 | return -EINVAL; | |
1081 | ||
1082 | nr = of_get_child_count(node); | |
1083 | if (!nr) { | |
1084 | ret = -EINVAL; | |
1085 | goto rsnd_ssi_probe_done; | |
1086 | } | |
90e8e50f | 1087 | |
dd27d808 | 1088 | ssi = devm_kzalloc(dev, sizeof(*ssi) * nr, GFP_KERNEL); |
02534f2f KM |
1089 | if (!ssi) { |
1090 | ret = -ENOMEM; | |
1091 | goto rsnd_ssi_probe_done; | |
1092 | } | |
ae5c3223 | 1093 | |
dd27d808 KM |
1094 | priv->ssi = ssi; |
1095 | priv->ssi_nr = nr; | |
ae5c3223 | 1096 | |
02534f2f KM |
1097 | i = 0; |
1098 | for_each_child_of_node(node, np) { | |
1099 | ssi = rsnd_ssi_get(priv, i); | |
ae5c3223 | 1100 | |
8aefda50 KM |
1101 | snprintf(name, RSND_SSI_NAME_SIZE, "%s.%d", |
1102 | SSI_NAME, i); | |
ae5c3223 | 1103 | |
60dbb4f1 | 1104 | clk = devm_clk_get(dev, name); |
02534f2f KM |
1105 | if (IS_ERR(clk)) { |
1106 | ret = PTR_ERR(clk); | |
53ba2aa3 | 1107 | of_node_put(np); |
02534f2f KM |
1108 | goto rsnd_ssi_probe_done; |
1109 | } | |
ae5c3223 | 1110 | |
02534f2f | 1111 | if (of_get_property(np, "shared-pin", NULL)) |
bf9b29c7 | 1112 | rsnd_ssi_flags_set(ssi, RSND_SSI_CLK_PIN_SHARE); |
02534f2f KM |
1113 | |
1114 | if (of_get_property(np, "no-busif", NULL)) | |
bf9b29c7 | 1115 | rsnd_ssi_flags_set(ssi, RSND_SSI_NO_BUSIF); |
02534f2f KM |
1116 | |
1117 | ssi->irq = irq_of_parse_and_map(np, 0); | |
1118 | if (!ssi->irq) { | |
1119 | ret = -EINVAL; | |
53ba2aa3 | 1120 | of_node_put(np); |
02534f2f KM |
1121 | goto rsnd_ssi_probe_done; |
1122 | } | |
ae5c3223 | 1123 | |
51930295 | 1124 | if (of_property_read_bool(np, "pio-transfer")) |
ff8f30e6 | 1125 | ops = &rsnd_ssi_pio_ops; |
02534f2f KM |
1126 | else |
1127 | ops = &rsnd_ssi_dma_ops; | |
ae5c3223 | 1128 | |
b76e218a | 1129 | ret = rsnd_mod_init(priv, rsnd_mod_get(ssi), ops, clk, |
5ba17b42 | 1130 | rsnd_ssi_get_status, RSND_MOD_SSI, i); |
53ba2aa3 JL |
1131 | if (ret) { |
1132 | of_node_put(np); | |
02534f2f | 1133 | goto rsnd_ssi_probe_done; |
53ba2aa3 | 1134 | } |
02534f2f KM |
1135 | |
1136 | i++; | |
ae5c3223 KM |
1137 | } |
1138 | ||
02534f2f KM |
1139 | ret = 0; |
1140 | ||
1141 | rsnd_ssi_probe_done: | |
1142 | of_node_put(node); | |
1143 | ||
1144 | return ret; | |
ae5c3223 | 1145 | } |
2f78dd7f | 1146 | |
2ea6b074 | 1147 | void rsnd_ssi_remove(struct rsnd_priv *priv) |
2f78dd7f KM |
1148 | { |
1149 | struct rsnd_ssi *ssi; | |
1150 | int i; | |
1151 | ||
1152 | for_each_rsnd_ssi(ssi, priv, i) { | |
b76e218a | 1153 | rsnd_mod_quit(rsnd_mod_get(ssi)); |
2f78dd7f KM |
1154 | } |
1155 | } |