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5033f43c | 1 | /* sound/soc/samsung/i2s.c |
1c7ac018 JB |
2 | * |
3 | * ALSA SoC Audio Layer - Samsung I2S Controller driver | |
4 | * | |
5 | * Copyright (c) 2010 Samsung Electronics Co. Ltd. | |
df8ad335 | 6 | * Jaswinder Singh <jassisinghbrar@gmail.com> |
1c7ac018 JB |
7 | * |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/delay.h> | |
14 | #include <linux/slab.h> | |
15 | #include <linux/clk.h> | |
16 | #include <linux/io.h> | |
da155d5b | 17 | #include <linux/module.h> |
40476f61 PV |
18 | #include <linux/of.h> |
19 | #include <linux/of_gpio.h> | |
c5cf4dbc | 20 | #include <linux/pm_runtime.h> |
1c7ac018 | 21 | |
1c7ac018 | 22 | #include <sound/soc.h> |
0378b6ac | 23 | #include <sound/pcm_params.h> |
1c7ac018 | 24 | |
436d42c6 | 25 | #include <linux/platform_data/asoc-s3c.h> |
1c7ac018 JB |
26 | |
27 | #include "dma.h" | |
61100f40 | 28 | #include "idma.h" |
1c7ac018 | 29 | #include "i2s.h" |
172a453d | 30 | #include "i2s-regs.h" |
1c7ac018 JB |
31 | |
32 | #define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t) | |
33 | ||
7c62eebb PV |
34 | enum samsung_dai_type { |
35 | TYPE_PRI, | |
36 | TYPE_SEC, | |
37 | }; | |
38 | ||
a5a56871 PV |
39 | struct samsung_i2s_variant_regs { |
40 | unsigned int bfs_off; | |
41 | unsigned int rfs_off; | |
42 | unsigned int sdf_off; | |
43 | unsigned int txr_off; | |
44 | unsigned int rclksrc_off; | |
45 | unsigned int mss_off; | |
46 | unsigned int cdclkcon_off; | |
47 | unsigned int lrp_off; | |
48 | unsigned int bfs_mask; | |
49 | unsigned int rfs_mask; | |
50 | unsigned int ftx0cnt_off; | |
51 | }; | |
52 | ||
40476f61 PV |
53 | struct samsung_i2s_dai_data { |
54 | int dai_type; | |
7da493e9 | 55 | u32 quirks; |
a5a56871 | 56 | const struct samsung_i2s_variant_regs *i2s_variant_regs; |
40476f61 PV |
57 | }; |
58 | ||
1c7ac018 JB |
59 | struct i2s_dai { |
60 | /* Platform device for this DAI */ | |
61 | struct platform_device *pdev; | |
62 | /* IOREMAP'd SFRs */ | |
63 | void __iomem *addr; | |
64 | /* Physical base address of SFRs */ | |
65 | u32 base; | |
66 | /* Rate of RCLK source clock */ | |
67 | unsigned long rclk_srcrate; | |
68 | /* Frame Clock */ | |
69 | unsigned frmclk; | |
70 | /* | |
71 | * Specifically requested RCLK,BCLK by MACHINE Driver. | |
72 | * 0 indicates CPU driver is free to choose any value. | |
73 | */ | |
74 | unsigned rfs, bfs; | |
75 | /* I2S Controller's core clock */ | |
76 | struct clk *clk; | |
77 | /* Clock for generating I2S signals */ | |
78 | struct clk *op_clk; | |
1c7ac018 JB |
79 | /* Pointer to the Primary_Fifo if this is Sec_Fifo, NULL otherwise */ |
80 | struct i2s_dai *pri_dai; | |
81 | /* Pointer to the Secondary_Fifo if it has one, NULL otherwise */ | |
82 | struct i2s_dai *sec_dai; | |
83 | #define DAI_OPENED (1 << 0) /* Dai is opened */ | |
84 | #define DAI_MANAGER (1 << 1) /* Dai is the manager */ | |
85 | unsigned mode; | |
b97c60ab SN |
86 | /* CDCLK pin direction: 0 - input, 1 - output */ |
87 | unsigned int cdclk_out:1; | |
1c7ac018 JB |
88 | /* Driver for this DAI */ |
89 | struct snd_soc_dai_driver i2s_dai_drv; | |
90 | /* DMA parameters */ | |
91 | struct s3c_dma_params dma_playback; | |
92 | struct s3c_dma_params dma_capture; | |
61100f40 | 93 | struct s3c_dma_params idma_playback; |
1c7ac018 JB |
94 | u32 quirks; |
95 | u32 suspend_i2smod; | |
96 | u32 suspend_i2scon; | |
97 | u32 suspend_i2spsr; | |
40476f61 | 98 | unsigned long gpios[7]; /* i2s gpio line numbers */ |
a5a56871 | 99 | const struct samsung_i2s_variant_regs *variant_regs; |
1c7ac018 JB |
100 | }; |
101 | ||
102 | /* Lock for cross i/f checks */ | |
103 | static DEFINE_SPINLOCK(lock); | |
104 | ||
105 | /* If this is the 'overlay' stereo DAI */ | |
106 | static inline bool is_secondary(struct i2s_dai *i2s) | |
107 | { | |
108 | return i2s->pri_dai ? true : false; | |
109 | } | |
110 | ||
111 | /* If operating in SoC-Slave mode */ | |
112 | static inline bool is_slave(struct i2s_dai *i2s) | |
113 | { | |
a5a56871 PV |
114 | u32 mod = readl(i2s->addr + I2SMOD); |
115 | return (mod & (1 << i2s->variant_regs->mss_off)) ? true : false; | |
1c7ac018 JB |
116 | } |
117 | ||
118 | /* If this interface of the controller is transmitting data */ | |
119 | static inline bool tx_active(struct i2s_dai *i2s) | |
120 | { | |
121 | u32 active; | |
122 | ||
123 | if (!i2s) | |
124 | return false; | |
125 | ||
33195500 | 126 | active = readl(i2s->addr + I2SCON); |
1c7ac018 JB |
127 | |
128 | if (is_secondary(i2s)) | |
129 | active &= CON_TXSDMA_ACTIVE; | |
130 | else | |
131 | active &= CON_TXDMA_ACTIVE; | |
132 | ||
133 | return active ? true : false; | |
134 | } | |
135 | ||
136 | /* If the other interface of the controller is transmitting data */ | |
137 | static inline bool other_tx_active(struct i2s_dai *i2s) | |
138 | { | |
139 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; | |
140 | ||
141 | return tx_active(other); | |
142 | } | |
143 | ||
144 | /* If any interface of the controller is transmitting data */ | |
145 | static inline bool any_tx_active(struct i2s_dai *i2s) | |
146 | { | |
147 | return tx_active(i2s) || other_tx_active(i2s); | |
148 | } | |
149 | ||
150 | /* If this interface of the controller is receiving data */ | |
151 | static inline bool rx_active(struct i2s_dai *i2s) | |
152 | { | |
153 | u32 active; | |
154 | ||
155 | if (!i2s) | |
156 | return false; | |
157 | ||
33195500 | 158 | active = readl(i2s->addr + I2SCON) & CON_RXDMA_ACTIVE; |
1c7ac018 JB |
159 | |
160 | return active ? true : false; | |
161 | } | |
162 | ||
163 | /* If the other interface of the controller is receiving data */ | |
164 | static inline bool other_rx_active(struct i2s_dai *i2s) | |
165 | { | |
166 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; | |
167 | ||
168 | return rx_active(other); | |
169 | } | |
170 | ||
171 | /* If any interface of the controller is receiving data */ | |
172 | static inline bool any_rx_active(struct i2s_dai *i2s) | |
173 | { | |
174 | return rx_active(i2s) || other_rx_active(i2s); | |
175 | } | |
176 | ||
177 | /* If the other DAI is transmitting or receiving data */ | |
178 | static inline bool other_active(struct i2s_dai *i2s) | |
179 | { | |
180 | return other_rx_active(i2s) || other_tx_active(i2s); | |
181 | } | |
182 | ||
183 | /* If this DAI is transmitting or receiving data */ | |
184 | static inline bool this_active(struct i2s_dai *i2s) | |
185 | { | |
186 | return tx_active(i2s) || rx_active(i2s); | |
187 | } | |
188 | ||
189 | /* If the controller is active anyway */ | |
190 | static inline bool any_active(struct i2s_dai *i2s) | |
191 | { | |
192 | return this_active(i2s) || other_active(i2s); | |
193 | } | |
194 | ||
195 | static inline struct i2s_dai *to_info(struct snd_soc_dai *dai) | |
196 | { | |
197 | return snd_soc_dai_get_drvdata(dai); | |
198 | } | |
199 | ||
200 | static inline bool is_opened(struct i2s_dai *i2s) | |
201 | { | |
202 | if (i2s && (i2s->mode & DAI_OPENED)) | |
203 | return true; | |
204 | else | |
205 | return false; | |
206 | } | |
207 | ||
208 | static inline bool is_manager(struct i2s_dai *i2s) | |
209 | { | |
210 | if (is_opened(i2s) && (i2s->mode & DAI_MANAGER)) | |
211 | return true; | |
212 | else | |
213 | return false; | |
214 | } | |
215 | ||
216 | /* Read RCLK of I2S (in multiples of LRCLK) */ | |
217 | static inline unsigned get_rfs(struct i2s_dai *i2s) | |
218 | { | |
4ca0c0d4 | 219 | u32 rfs; |
a5a56871 PV |
220 | rfs = readl(i2s->addr + I2SMOD) >> i2s->variant_regs->rfs_off; |
221 | rfs &= i2s->variant_regs->rfs_mask; | |
1c7ac018 JB |
222 | |
223 | switch (rfs) { | |
a5a56871 PV |
224 | case 7: return 192; |
225 | case 6: return 96; | |
226 | case 5: return 128; | |
227 | case 4: return 64; | |
1c7ac018 JB |
228 | case 3: return 768; |
229 | case 2: return 384; | |
230 | case 1: return 512; | |
231 | default: return 256; | |
232 | } | |
233 | } | |
234 | ||
235 | /* Write RCLK of I2S (in multiples of LRCLK) */ | |
236 | static inline void set_rfs(struct i2s_dai *i2s, unsigned rfs) | |
237 | { | |
238 | u32 mod = readl(i2s->addr + I2SMOD); | |
a5a56871 | 239 | int rfs_shift = i2s->variant_regs->rfs_off; |
1c7ac018 | 240 | |
a5a56871 | 241 | mod &= ~(i2s->variant_regs->rfs_mask << rfs_shift); |
1c7ac018 JB |
242 | |
243 | switch (rfs) { | |
a5a56871 PV |
244 | case 192: |
245 | mod |= (EXYNOS7_MOD_RCLK_192FS << rfs_shift); | |
246 | break; | |
247 | case 96: | |
248 | mod |= (EXYNOS7_MOD_RCLK_96FS << rfs_shift); | |
249 | break; | |
250 | case 128: | |
251 | mod |= (EXYNOS7_MOD_RCLK_128FS << rfs_shift); | |
252 | break; | |
253 | case 64: | |
254 | mod |= (EXYNOS7_MOD_RCLK_64FS << rfs_shift); | |
255 | break; | |
1c7ac018 | 256 | case 768: |
b60be4aa | 257 | mod |= (MOD_RCLK_768FS << rfs_shift); |
1c7ac018 JB |
258 | break; |
259 | case 512: | |
b60be4aa | 260 | mod |= (MOD_RCLK_512FS << rfs_shift); |
1c7ac018 JB |
261 | break; |
262 | case 384: | |
b60be4aa | 263 | mod |= (MOD_RCLK_384FS << rfs_shift); |
1c7ac018 JB |
264 | break; |
265 | default: | |
b60be4aa | 266 | mod |= (MOD_RCLK_256FS << rfs_shift); |
1c7ac018 JB |
267 | break; |
268 | } | |
269 | ||
270 | writel(mod, i2s->addr + I2SMOD); | |
271 | } | |
272 | ||
273 | /* Read Bit-Clock of I2S (in multiples of LRCLK) */ | |
274 | static inline unsigned get_bfs(struct i2s_dai *i2s) | |
275 | { | |
4ca0c0d4 | 276 | u32 bfs; |
a5a56871 PV |
277 | bfs = readl(i2s->addr + I2SMOD) >> i2s->variant_regs->bfs_off; |
278 | bfs &= i2s->variant_regs->bfs_mask; | |
1c7ac018 JB |
279 | |
280 | switch (bfs) { | |
4ca0c0d4 PV |
281 | case 8: return 256; |
282 | case 7: return 192; | |
283 | case 6: return 128; | |
284 | case 5: return 96; | |
285 | case 4: return 64; | |
1c7ac018 JB |
286 | case 3: return 24; |
287 | case 2: return 16; | |
288 | case 1: return 48; | |
289 | default: return 32; | |
290 | } | |
291 | } | |
292 | ||
293 | /* Write Bit-Clock of I2S (in multiples of LRCLK) */ | |
294 | static inline void set_bfs(struct i2s_dai *i2s, unsigned bfs) | |
295 | { | |
296 | u32 mod = readl(i2s->addr + I2SMOD); | |
4ca0c0d4 | 297 | int tdm = i2s->quirks & QUIRK_SUPPORTS_TDM; |
a5a56871 | 298 | int bfs_shift = i2s->variant_regs->bfs_off; |
4ca0c0d4 PV |
299 | |
300 | /* Non-TDM I2S controllers do not support BCLK > 48 * FS */ | |
301 | if (!tdm && bfs > 48) { | |
302 | dev_err(&i2s->pdev->dev, "Unsupported BCLK divider\n"); | |
303 | return; | |
304 | } | |
1c7ac018 | 305 | |
a5a56871 PV |
306 | mod &= ~(i2s->variant_regs->bfs_mask << bfs_shift); |
307 | ||
1c7ac018 JB |
308 | switch (bfs) { |
309 | case 48: | |
b60be4aa | 310 | mod |= (MOD_BCLK_48FS << bfs_shift); |
1c7ac018 JB |
311 | break; |
312 | case 32: | |
b60be4aa | 313 | mod |= (MOD_BCLK_32FS << bfs_shift); |
1c7ac018 JB |
314 | break; |
315 | case 24: | |
b60be4aa | 316 | mod |= (MOD_BCLK_24FS << bfs_shift); |
1c7ac018 JB |
317 | break; |
318 | case 16: | |
b60be4aa | 319 | mod |= (MOD_BCLK_16FS << bfs_shift); |
1c7ac018 | 320 | break; |
4ca0c0d4 PV |
321 | case 64: |
322 | mod |= (EXYNOS5420_MOD_BCLK_64FS << bfs_shift); | |
323 | break; | |
324 | case 96: | |
325 | mod |= (EXYNOS5420_MOD_BCLK_96FS << bfs_shift); | |
326 | break; | |
327 | case 128: | |
328 | mod |= (EXYNOS5420_MOD_BCLK_128FS << bfs_shift); | |
329 | break; | |
330 | case 192: | |
331 | mod |= (EXYNOS5420_MOD_BCLK_192FS << bfs_shift); | |
332 | break; | |
333 | case 256: | |
334 | mod |= (EXYNOS5420_MOD_BCLK_256FS << bfs_shift); | |
1c7ac018 JB |
335 | break; |
336 | default: | |
337 | dev_err(&i2s->pdev->dev, "Wrong BCLK Divider!\n"); | |
338 | return; | |
339 | } | |
340 | ||
341 | writel(mod, i2s->addr + I2SMOD); | |
342 | } | |
343 | ||
344 | /* Sample-Size */ | |
345 | static inline int get_blc(struct i2s_dai *i2s) | |
346 | { | |
347 | int blc = readl(i2s->addr + I2SMOD); | |
348 | ||
349 | blc = (blc >> 13) & 0x3; | |
350 | ||
351 | switch (blc) { | |
352 | case 2: return 24; | |
353 | case 1: return 8; | |
354 | default: return 16; | |
355 | } | |
356 | } | |
357 | ||
358 | /* TX Channel Control */ | |
359 | static void i2s_txctrl(struct i2s_dai *i2s, int on) | |
360 | { | |
361 | void __iomem *addr = i2s->addr; | |
a5a56871 | 362 | int txr_off = i2s->variant_regs->txr_off; |
1c7ac018 | 363 | u32 con = readl(addr + I2SCON); |
a5a56871 | 364 | u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off); |
1c7ac018 JB |
365 | |
366 | if (on) { | |
367 | con |= CON_ACTIVE; | |
368 | con &= ~CON_TXCH_PAUSE; | |
369 | ||
370 | if (is_secondary(i2s)) { | |
371 | con |= CON_TXSDMA_ACTIVE; | |
372 | con &= ~CON_TXSDMA_PAUSE; | |
373 | } else { | |
374 | con |= CON_TXDMA_ACTIVE; | |
375 | con &= ~CON_TXDMA_PAUSE; | |
376 | } | |
377 | ||
378 | if (any_rx_active(i2s)) | |
a5a56871 | 379 | mod |= 2 << txr_off; |
1c7ac018 | 380 | else |
a5a56871 | 381 | mod |= 0 << txr_off; |
1c7ac018 JB |
382 | } else { |
383 | if (is_secondary(i2s)) { | |
384 | con |= CON_TXSDMA_PAUSE; | |
385 | con &= ~CON_TXSDMA_ACTIVE; | |
386 | } else { | |
387 | con |= CON_TXDMA_PAUSE; | |
388 | con &= ~CON_TXDMA_ACTIVE; | |
389 | } | |
390 | ||
391 | if (other_tx_active(i2s)) { | |
392 | writel(con, addr + I2SCON); | |
393 | return; | |
394 | } | |
395 | ||
396 | con |= CON_TXCH_PAUSE; | |
397 | ||
398 | if (any_rx_active(i2s)) | |
a5a56871 | 399 | mod |= 1 << txr_off; |
1c7ac018 JB |
400 | else |
401 | con &= ~CON_ACTIVE; | |
402 | } | |
403 | ||
404 | writel(mod, addr + I2SMOD); | |
405 | writel(con, addr + I2SCON); | |
406 | } | |
407 | ||
408 | /* RX Channel Control */ | |
409 | static void i2s_rxctrl(struct i2s_dai *i2s, int on) | |
410 | { | |
411 | void __iomem *addr = i2s->addr; | |
a5a56871 | 412 | int txr_off = i2s->variant_regs->txr_off; |
1c7ac018 | 413 | u32 con = readl(addr + I2SCON); |
a5a56871 | 414 | u32 mod = readl(addr + I2SMOD) & ~(3 << txr_off); |
1c7ac018 JB |
415 | |
416 | if (on) { | |
417 | con |= CON_RXDMA_ACTIVE | CON_ACTIVE; | |
418 | con &= ~(CON_RXDMA_PAUSE | CON_RXCH_PAUSE); | |
419 | ||
420 | if (any_tx_active(i2s)) | |
a5a56871 | 421 | mod |= 2 << txr_off; |
1c7ac018 | 422 | else |
a5a56871 | 423 | mod |= 1 << txr_off; |
1c7ac018 JB |
424 | } else { |
425 | con |= CON_RXDMA_PAUSE | CON_RXCH_PAUSE; | |
426 | con &= ~CON_RXDMA_ACTIVE; | |
427 | ||
428 | if (any_tx_active(i2s)) | |
a5a56871 | 429 | mod |= 0 << txr_off; |
1c7ac018 JB |
430 | else |
431 | con &= ~CON_ACTIVE; | |
432 | } | |
433 | ||
434 | writel(mod, addr + I2SMOD); | |
435 | writel(con, addr + I2SCON); | |
436 | } | |
437 | ||
438 | /* Flush FIFO of an interface */ | |
439 | static inline void i2s_fifo(struct i2s_dai *i2s, u32 flush) | |
440 | { | |
441 | void __iomem *fic; | |
442 | u32 val; | |
443 | ||
444 | if (!i2s) | |
445 | return; | |
446 | ||
447 | if (is_secondary(i2s)) | |
448 | fic = i2s->addr + I2SFICS; | |
449 | else | |
450 | fic = i2s->addr + I2SFIC; | |
451 | ||
452 | /* Flush the FIFO */ | |
453 | writel(readl(fic) | flush, fic); | |
454 | ||
455 | /* Be patient */ | |
456 | val = msecs_to_loops(1) / 1000; /* 1 usec */ | |
457 | while (--val) | |
458 | cpu_relax(); | |
459 | ||
460 | writel(readl(fic) & ~flush, fic); | |
461 | } | |
462 | ||
463 | static int i2s_set_sysclk(struct snd_soc_dai *dai, | |
464 | int clk_id, unsigned int rfs, int dir) | |
465 | { | |
466 | struct i2s_dai *i2s = to_info(dai); | |
467 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; | |
468 | u32 mod = readl(i2s->addr + I2SMOD); | |
a5a56871 PV |
469 | const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs; |
470 | unsigned int cdcon_mask = 1 << i2s_regs->cdclkcon_off; | |
471 | unsigned int rsrc_mask = 1 << i2s_regs->rclksrc_off; | |
1c7ac018 JB |
472 | |
473 | switch (clk_id) { | |
c86d50f9 SN |
474 | case SAMSUNG_I2S_OPCLK: |
475 | mod &= ~MOD_OPCLK_MASK; | |
476 | mod |= dir; | |
477 | break; | |
1c7ac018 JB |
478 | case SAMSUNG_I2S_CDCLK: |
479 | /* Shouldn't matter in GATING(CLOCK_IN) mode */ | |
480 | if (dir == SND_SOC_CLOCK_IN) | |
481 | rfs = 0; | |
482 | ||
133c2681 | 483 | if ((rfs && other && other->rfs && (other->rfs != rfs)) || |
1c7ac018 JB |
484 | (any_active(i2s) && |
485 | (((dir == SND_SOC_CLOCK_IN) | |
a5a56871 | 486 | && !(mod & cdcon_mask)) || |
1c7ac018 | 487 | ((dir == SND_SOC_CLOCK_OUT) |
a5a56871 | 488 | && (mod & cdcon_mask))))) { |
1c7ac018 JB |
489 | dev_err(&i2s->pdev->dev, |
490 | "%s:%d Other DAI busy\n", __func__, __LINE__); | |
491 | return -EAGAIN; | |
492 | } | |
493 | ||
494 | if (dir == SND_SOC_CLOCK_IN) | |
a5a56871 | 495 | mod |= 1 << i2s_regs->cdclkcon_off; |
1c7ac018 | 496 | else |
b2de1d20 | 497 | mod &= ~(1 << i2s_regs->cdclkcon_off); |
1c7ac018 JB |
498 | |
499 | i2s->rfs = rfs; | |
500 | break; | |
501 | ||
502 | case SAMSUNG_I2S_RCLKSRC_0: /* clock corrsponding to IISMOD[10] := 0 */ | |
503 | case SAMSUNG_I2S_RCLKSRC_1: /* clock corrsponding to IISMOD[10] := 1 */ | |
504 | if ((i2s->quirks & QUIRK_NO_MUXPSR) | |
505 | || (clk_id == SAMSUNG_I2S_RCLKSRC_0)) | |
506 | clk_id = 0; | |
507 | else | |
508 | clk_id = 1; | |
509 | ||
510 | if (!any_active(i2s)) { | |
a6aba536 | 511 | if (i2s->op_clk && !IS_ERR(i2s->op_clk)) { |
a5a56871 PV |
512 | if ((clk_id && !(mod & rsrc_mask)) || |
513 | (!clk_id && (mod & rsrc_mask))) { | |
98614cf6 | 514 | clk_disable_unprepare(i2s->op_clk); |
1c7ac018 JB |
515 | clk_put(i2s->op_clk); |
516 | } else { | |
6ce534aa JB |
517 | i2s->rclk_srcrate = |
518 | clk_get_rate(i2s->op_clk); | |
1c7ac018 JB |
519 | return 0; |
520 | } | |
521 | } | |
522 | ||
1974a042 PV |
523 | if (clk_id) |
524 | i2s->op_clk = clk_get(&i2s->pdev->dev, | |
525 | "i2s_opclk1"); | |
526 | else | |
527 | i2s->op_clk = clk_get(&i2s->pdev->dev, | |
528 | "i2s_opclk0"); | |
a6aba536 SN |
529 | |
530 | if (WARN_ON(IS_ERR(i2s->op_clk))) | |
531 | return PTR_ERR(i2s->op_clk); | |
532 | ||
98614cf6 | 533 | clk_prepare_enable(i2s->op_clk); |
1c7ac018 JB |
534 | i2s->rclk_srcrate = clk_get_rate(i2s->op_clk); |
535 | ||
536 | /* Over-ride the other's */ | |
537 | if (other) { | |
538 | other->op_clk = i2s->op_clk; | |
539 | other->rclk_srcrate = i2s->rclk_srcrate; | |
540 | } | |
a5a56871 PV |
541 | } else if ((!clk_id && (mod & rsrc_mask)) |
542 | || (clk_id && !(mod & rsrc_mask))) { | |
1c7ac018 JB |
543 | dev_err(&i2s->pdev->dev, |
544 | "%s:%d Other DAI busy\n", __func__, __LINE__); | |
545 | return -EAGAIN; | |
546 | } else { | |
547 | /* Call can't be on the active DAI */ | |
548 | i2s->op_clk = other->op_clk; | |
549 | i2s->rclk_srcrate = other->rclk_srcrate; | |
550 | return 0; | |
551 | } | |
552 | ||
553 | if (clk_id == 0) | |
b2de1d20 | 554 | mod &= ~(1 << i2s_regs->rclksrc_off); |
1c7ac018 | 555 | else |
a5a56871 | 556 | mod |= 1 << i2s_regs->rclksrc_off; |
1c7ac018 | 557 | |
b2de1d20 | 558 | break; |
1c7ac018 JB |
559 | default: |
560 | dev_err(&i2s->pdev->dev, "We don't serve that!\n"); | |
561 | return -EINVAL; | |
562 | } | |
563 | ||
564 | writel(mod, i2s->addr + I2SMOD); | |
565 | ||
566 | return 0; | |
567 | } | |
568 | ||
569 | static int i2s_set_fmt(struct snd_soc_dai *dai, | |
570 | unsigned int fmt) | |
571 | { | |
572 | struct i2s_dai *i2s = to_info(dai); | |
573 | u32 mod = readl(i2s->addr + I2SMOD); | |
a5a56871 | 574 | int lrp_shift, sdf_shift, sdf_mask, lrp_rlow, mod_slave; |
1c7ac018 JB |
575 | u32 tmp = 0; |
576 | ||
a5a56871 PV |
577 | lrp_shift = i2s->variant_regs->lrp_off; |
578 | sdf_shift = i2s->variant_regs->sdf_off; | |
579 | mod_slave = 1 << i2s->variant_regs->mss_off; | |
4ca0c0d4 | 580 | |
b60be4aa PV |
581 | sdf_mask = MOD_SDF_MASK << sdf_shift; |
582 | lrp_rlow = MOD_LR_RLOW << lrp_shift; | |
583 | ||
1c7ac018 JB |
584 | /* Format is priority */ |
585 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
586 | case SND_SOC_DAIFMT_RIGHT_J: | |
b60be4aa PV |
587 | tmp |= lrp_rlow; |
588 | tmp |= (MOD_SDF_MSB << sdf_shift); | |
1c7ac018 JB |
589 | break; |
590 | case SND_SOC_DAIFMT_LEFT_J: | |
b60be4aa PV |
591 | tmp |= lrp_rlow; |
592 | tmp |= (MOD_SDF_LSB << sdf_shift); | |
1c7ac018 JB |
593 | break; |
594 | case SND_SOC_DAIFMT_I2S: | |
b60be4aa | 595 | tmp |= (MOD_SDF_IIS << sdf_shift); |
1c7ac018 JB |
596 | break; |
597 | default: | |
598 | dev_err(&i2s->pdev->dev, "Format not supported\n"); | |
599 | return -EINVAL; | |
600 | } | |
601 | ||
602 | /* | |
603 | * INV flag is relative to the FORMAT flag - if set it simply | |
604 | * flips the polarity specified by the Standard | |
605 | */ | |
606 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
607 | case SND_SOC_DAIFMT_NB_NF: | |
608 | break; | |
609 | case SND_SOC_DAIFMT_NB_IF: | |
b60be4aa PV |
610 | if (tmp & lrp_rlow) |
611 | tmp &= ~lrp_rlow; | |
1c7ac018 | 612 | else |
b60be4aa | 613 | tmp |= lrp_rlow; |
1c7ac018 JB |
614 | break; |
615 | default: | |
616 | dev_err(&i2s->pdev->dev, "Polarity not supported\n"); | |
617 | return -EINVAL; | |
618 | } | |
619 | ||
620 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
621 | case SND_SOC_DAIFMT_CBM_CFM: | |
a5a56871 | 622 | tmp |= mod_slave; |
1c7ac018 JB |
623 | break; |
624 | case SND_SOC_DAIFMT_CBS_CFS: | |
625 | /* Set default source clock in Master mode */ | |
626 | if (i2s->rclk_srcrate == 0) | |
627 | i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0, | |
628 | 0, SND_SOC_CLOCK_IN); | |
629 | break; | |
630 | default: | |
631 | dev_err(&i2s->pdev->dev, "master/slave format not supported\n"); | |
632 | return -EINVAL; | |
633 | } | |
634 | ||
b60be4aa PV |
635 | /* |
636 | * Don't change the I2S mode if any controller is active on this | |
637 | * channel. | |
638 | */ | |
1c7ac018 | 639 | if (any_active(i2s) && |
a5a56871 | 640 | ((mod & (sdf_mask | lrp_rlow | mod_slave)) != tmp)) { |
1c7ac018 JB |
641 | dev_err(&i2s->pdev->dev, |
642 | "%s:%d Other DAI busy\n", __func__, __LINE__); | |
643 | return -EAGAIN; | |
644 | } | |
645 | ||
a5a56871 | 646 | mod &= ~(sdf_mask | lrp_rlow | mod_slave); |
1c7ac018 JB |
647 | mod |= tmp; |
648 | writel(mod, i2s->addr + I2SMOD); | |
649 | ||
650 | return 0; | |
651 | } | |
652 | ||
653 | static int i2s_hw_params(struct snd_pcm_substream *substream, | |
654 | struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) | |
655 | { | |
656 | struct i2s_dai *i2s = to_info(dai); | |
657 | u32 mod = readl(i2s->addr + I2SMOD); | |
658 | ||
659 | if (!is_secondary(i2s)) | |
660 | mod &= ~(MOD_DC2_EN | MOD_DC1_EN); | |
661 | ||
662 | switch (params_channels(params)) { | |
663 | case 6: | |
664 | mod |= MOD_DC2_EN; | |
665 | case 4: | |
666 | mod |= MOD_DC1_EN; | |
667 | break; | |
668 | case 2: | |
588fb705 SP |
669 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
670 | i2s->dma_playback.dma_size = 4; | |
671 | else | |
672 | i2s->dma_capture.dma_size = 4; | |
673 | break; | |
674 | case 1: | |
675 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
676 | i2s->dma_playback.dma_size = 2; | |
677 | else | |
678 | i2s->dma_capture.dma_size = 2; | |
679 | ||
1c7ac018 JB |
680 | break; |
681 | default: | |
682 | dev_err(&i2s->pdev->dev, "%d channels not supported\n", | |
683 | params_channels(params)); | |
684 | return -EINVAL; | |
685 | } | |
686 | ||
687 | if (is_secondary(i2s)) | |
688 | mod &= ~MOD_BLCS_MASK; | |
689 | else | |
690 | mod &= ~MOD_BLCP_MASK; | |
691 | ||
692 | if (is_manager(i2s)) | |
693 | mod &= ~MOD_BLC_MASK; | |
694 | ||
88ce1465 TB |
695 | switch (params_width(params)) { |
696 | case 8: | |
1c7ac018 JB |
697 | if (is_secondary(i2s)) |
698 | mod |= MOD_BLCS_8BIT; | |
699 | else | |
700 | mod |= MOD_BLCP_8BIT; | |
701 | if (is_manager(i2s)) | |
702 | mod |= MOD_BLC_8BIT; | |
703 | break; | |
88ce1465 | 704 | case 16: |
1c7ac018 JB |
705 | if (is_secondary(i2s)) |
706 | mod |= MOD_BLCS_16BIT; | |
707 | else | |
708 | mod |= MOD_BLCP_16BIT; | |
709 | if (is_manager(i2s)) | |
710 | mod |= MOD_BLC_16BIT; | |
711 | break; | |
88ce1465 | 712 | case 24: |
1c7ac018 JB |
713 | if (is_secondary(i2s)) |
714 | mod |= MOD_BLCS_24BIT; | |
715 | else | |
716 | mod |= MOD_BLCP_24BIT; | |
717 | if (is_manager(i2s)) | |
718 | mod |= MOD_BLC_24BIT; | |
719 | break; | |
720 | default: | |
721 | dev_err(&i2s->pdev->dev, "Format(%d) not supported\n", | |
722 | params_format(params)); | |
723 | return -EINVAL; | |
724 | } | |
725 | writel(mod, i2s->addr + I2SMOD); | |
726 | ||
d37bdf73 MB |
727 | samsung_asoc_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture); |
728 | ||
1c7ac018 JB |
729 | i2s->frmclk = params_rate(params); |
730 | ||
731 | return 0; | |
732 | } | |
733 | ||
734 | /* We set constraints on the substream acc to the version of I2S */ | |
735 | static int i2s_startup(struct snd_pcm_substream *substream, | |
736 | struct snd_soc_dai *dai) | |
737 | { | |
738 | struct i2s_dai *i2s = to_info(dai); | |
739 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; | |
740 | unsigned long flags; | |
741 | ||
742 | spin_lock_irqsave(&lock, flags); | |
743 | ||
744 | i2s->mode |= DAI_OPENED; | |
745 | ||
746 | if (is_manager(other)) | |
747 | i2s->mode &= ~DAI_MANAGER; | |
748 | else | |
749 | i2s->mode |= DAI_MANAGER; | |
750 | ||
2d77828d PV |
751 | if (!any_active(i2s) && (i2s->quirks & QUIRK_NEED_RSTCLR)) |
752 | writel(CON_RSTCLR, i2s->addr + I2SCON); | |
753 | ||
1c7ac018 JB |
754 | spin_unlock_irqrestore(&lock, flags); |
755 | ||
b97c60ab SN |
756 | if (!is_opened(other) && i2s->cdclk_out) |
757 | i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK, | |
758 | 0, SND_SOC_CLOCK_OUT); | |
1c7ac018 JB |
759 | return 0; |
760 | } | |
761 | ||
762 | static void i2s_shutdown(struct snd_pcm_substream *substream, | |
763 | struct snd_soc_dai *dai) | |
764 | { | |
765 | struct i2s_dai *i2s = to_info(dai); | |
766 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; | |
767 | unsigned long flags; | |
a5a56871 | 768 | const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs; |
1c7ac018 JB |
769 | |
770 | spin_lock_irqsave(&lock, flags); | |
771 | ||
772 | i2s->mode &= ~DAI_OPENED; | |
773 | i2s->mode &= ~DAI_MANAGER; | |
774 | ||
b97c60ab | 775 | if (is_opened(other)) { |
1c7ac018 | 776 | other->mode |= DAI_MANAGER; |
b97c60ab SN |
777 | } else { |
778 | u32 mod = readl(i2s->addr + I2SMOD); | |
a5a56871 | 779 | i2s->cdclk_out = !(mod & (1 << i2s_regs->cdclkcon_off)); |
133c2681 CK |
780 | if (other) |
781 | other->cdclk_out = i2s->cdclk_out; | |
b97c60ab | 782 | } |
1c7ac018 JB |
783 | /* Reset any constraint on RFS and BFS */ |
784 | i2s->rfs = 0; | |
785 | i2s->bfs = 0; | |
786 | ||
787 | spin_unlock_irqrestore(&lock, flags); | |
788 | ||
789 | /* Gate CDCLK by default */ | |
790 | if (!is_opened(other)) | |
791 | i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK, | |
792 | 0, SND_SOC_CLOCK_IN); | |
793 | } | |
794 | ||
795 | static int config_setup(struct i2s_dai *i2s) | |
796 | { | |
797 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; | |
798 | unsigned rfs, bfs, blc; | |
799 | u32 psr; | |
800 | ||
801 | blc = get_blc(i2s); | |
802 | ||
803 | bfs = i2s->bfs; | |
804 | ||
805 | if (!bfs && other) | |
806 | bfs = other->bfs; | |
807 | ||
808 | /* Select least possible multiple(2) if no constraint set */ | |
809 | if (!bfs) | |
810 | bfs = blc * 2; | |
811 | ||
812 | rfs = i2s->rfs; | |
813 | ||
814 | if (!rfs && other) | |
815 | rfs = other->rfs; | |
816 | ||
817 | if ((rfs == 256 || rfs == 512) && (blc == 24)) { | |
818 | dev_err(&i2s->pdev->dev, | |
819 | "%d-RFS not supported for 24-blc\n", rfs); | |
820 | return -EINVAL; | |
821 | } | |
822 | ||
823 | if (!rfs) { | |
824 | if (bfs == 16 || bfs == 32) | |
825 | rfs = 256; | |
826 | else | |
827 | rfs = 384; | |
828 | } | |
829 | ||
830 | /* If already setup and running */ | |
831 | if (any_active(i2s) && (get_rfs(i2s) != rfs || get_bfs(i2s) != bfs)) { | |
832 | dev_err(&i2s->pdev->dev, | |
833 | "%s:%d Other DAI busy\n", __func__, __LINE__); | |
834 | return -EAGAIN; | |
835 | } | |
836 | ||
1c7ac018 JB |
837 | set_bfs(i2s, bfs); |
838 | set_rfs(i2s, rfs); | |
839 | ||
77010010 PV |
840 | /* Don't bother with PSR in Slave mode */ |
841 | if (is_slave(i2s)) | |
842 | return 0; | |
843 | ||
1c7ac018 JB |
844 | if (!(i2s->quirks & QUIRK_NO_MUXPSR)) { |
845 | psr = i2s->rclk_srcrate / i2s->frmclk / rfs; | |
846 | writel(((psr - 1) << 8) | PSR_PSREN, i2s->addr + I2SPSR); | |
847 | dev_dbg(&i2s->pdev->dev, | |
848 | "RCLK_SRC=%luHz PSR=%u, RCLK=%dfs, BCLK=%dfs\n", | |
849 | i2s->rclk_srcrate, psr, rfs, bfs); | |
850 | } | |
851 | ||
852 | return 0; | |
853 | } | |
854 | ||
855 | static int i2s_trigger(struct snd_pcm_substream *substream, | |
856 | int cmd, struct snd_soc_dai *dai) | |
857 | { | |
858 | int capture = (substream->stream == SNDRV_PCM_STREAM_CAPTURE); | |
859 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
860 | struct i2s_dai *i2s = to_info(rtd->cpu_dai); | |
861 | unsigned long flags; | |
862 | ||
863 | switch (cmd) { | |
864 | case SNDRV_PCM_TRIGGER_START: | |
865 | case SNDRV_PCM_TRIGGER_RESUME: | |
866 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
867 | local_irq_save(flags); | |
868 | ||
1c7ac018 JB |
869 | if (config_setup(i2s)) { |
870 | local_irq_restore(flags); | |
871 | return -EINVAL; | |
872 | } | |
873 | ||
874 | if (capture) | |
875 | i2s_rxctrl(i2s, 1); | |
876 | else | |
877 | i2s_txctrl(i2s, 1); | |
878 | ||
879 | local_irq_restore(flags); | |
880 | break; | |
881 | case SNDRV_PCM_TRIGGER_STOP: | |
882 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
883 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
884 | local_irq_save(flags); | |
885 | ||
c90887fe | 886 | if (capture) { |
1c7ac018 | 887 | i2s_rxctrl(i2s, 0); |
775bc971 | 888 | i2s_fifo(i2s, FIC_RXFLUSH); |
c90887fe JB |
889 | } else { |
890 | i2s_txctrl(i2s, 0); | |
775bc971 | 891 | i2s_fifo(i2s, FIC_TXFLUSH); |
c90887fe | 892 | } |
775bc971 | 893 | |
1c7ac018 JB |
894 | local_irq_restore(flags); |
895 | break; | |
896 | } | |
897 | ||
898 | return 0; | |
899 | } | |
900 | ||
901 | static int i2s_set_clkdiv(struct snd_soc_dai *dai, | |
902 | int div_id, int div) | |
903 | { | |
904 | struct i2s_dai *i2s = to_info(dai); | |
905 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; | |
906 | ||
907 | switch (div_id) { | |
908 | case SAMSUNG_I2S_DIV_BCLK: | |
909 | if ((any_active(i2s) && div && (get_bfs(i2s) != div)) | |
910 | || (other && other->bfs && (other->bfs != div))) { | |
911 | dev_err(&i2s->pdev->dev, | |
912 | "%s:%d Other DAI busy\n", __func__, __LINE__); | |
913 | return -EAGAIN; | |
914 | } | |
915 | i2s->bfs = div; | |
916 | break; | |
917 | default: | |
918 | dev_err(&i2s->pdev->dev, | |
919 | "Invalid clock divider(%d)\n", div_id); | |
920 | return -EINVAL; | |
921 | } | |
922 | ||
923 | return 0; | |
924 | } | |
925 | ||
926 | static snd_pcm_sframes_t | |
927 | i2s_delay(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) | |
928 | { | |
929 | struct i2s_dai *i2s = to_info(dai); | |
930 | u32 reg = readl(i2s->addr + I2SFIC); | |
931 | snd_pcm_sframes_t delay; | |
a5a56871 | 932 | const struct samsung_i2s_variant_regs *i2s_regs = i2s->variant_regs; |
1c7ac018 JB |
933 | |
934 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
935 | delay = FIC_RXCOUNT(reg); | |
936 | else if (is_secondary(i2s)) | |
937 | delay = FICS_TXCOUNT(readl(i2s->addr + I2SFICS)); | |
938 | else | |
a5a56871 | 939 | delay = (reg >> i2s_regs->ftx0cnt_off) & 0x7f; |
1c7ac018 JB |
940 | |
941 | return delay; | |
942 | } | |
943 | ||
944 | #ifdef CONFIG_PM | |
945 | static int i2s_suspend(struct snd_soc_dai *dai) | |
946 | { | |
947 | struct i2s_dai *i2s = to_info(dai); | |
948 | ||
d3d4e524 SN |
949 | i2s->suspend_i2smod = readl(i2s->addr + I2SMOD); |
950 | i2s->suspend_i2scon = readl(i2s->addr + I2SCON); | |
951 | i2s->suspend_i2spsr = readl(i2s->addr + I2SPSR); | |
1c7ac018 JB |
952 | |
953 | return 0; | |
954 | } | |
955 | ||
956 | static int i2s_resume(struct snd_soc_dai *dai) | |
957 | { | |
958 | struct i2s_dai *i2s = to_info(dai); | |
959 | ||
d3d4e524 SN |
960 | writel(i2s->suspend_i2scon, i2s->addr + I2SCON); |
961 | writel(i2s->suspend_i2smod, i2s->addr + I2SMOD); | |
962 | writel(i2s->suspend_i2spsr, i2s->addr + I2SPSR); | |
1c7ac018 JB |
963 | |
964 | return 0; | |
965 | } | |
966 | #else | |
967 | #define i2s_suspend NULL | |
968 | #define i2s_resume NULL | |
969 | #endif | |
970 | ||
971 | static int samsung_i2s_dai_probe(struct snd_soc_dai *dai) | |
972 | { | |
973 | struct i2s_dai *i2s = to_info(dai); | |
974 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; | |
ba56447c | 975 | int ret; |
1c7ac018 | 976 | |
3688569e MB |
977 | if (other && other->clk) { /* If this is probe on secondary */ |
978 | samsung_asoc_init_dma_data(dai, &other->sec_dai->dma_playback, | |
979 | NULL); | |
1c7ac018 | 980 | goto probe_exit; |
3688569e | 981 | } |
1c7ac018 JB |
982 | |
983 | i2s->addr = ioremap(i2s->base, 0x100); | |
984 | if (i2s->addr == NULL) { | |
985 | dev_err(&i2s->pdev->dev, "cannot ioremap registers\n"); | |
986 | return -ENXIO; | |
987 | } | |
988 | ||
989 | i2s->clk = clk_get(&i2s->pdev->dev, "iis"); | |
990 | if (IS_ERR(i2s->clk)) { | |
991 | dev_err(&i2s->pdev->dev, "failed to get i2s_clock\n"); | |
992 | iounmap(i2s->addr); | |
ba56447c MB |
993 | return PTR_ERR(i2s->clk); |
994 | } | |
995 | ||
996 | ret = clk_prepare_enable(i2s->clk); | |
997 | if (ret != 0) { | |
998 | dev_err(&i2s->pdev->dev, "failed to enable clock: %d\n", ret); | |
999 | return ret; | |
1c7ac018 | 1000 | } |
1c7ac018 | 1001 | |
3688569e | 1002 | samsung_asoc_init_dma_data(dai, &i2s->dma_playback, &i2s->dma_capture); |
511e3033 | 1003 | |
1c7ac018 JB |
1004 | if (other) { |
1005 | other->addr = i2s->addr; | |
1006 | other->clk = i2s->clk; | |
1007 | } | |
1008 | ||
1009 | if (i2s->quirks & QUIRK_NEED_RSTCLR) | |
1010 | writel(CON_RSTCLR, i2s->addr + I2SCON); | |
1011 | ||
b0759736 | 1012 | if (i2s->quirks & QUIRK_SUPPORTS_IDMA) |
9b8f5695 | 1013 | idma_reg_addr_init(i2s->addr, |
61100f40 SK |
1014 | i2s->sec_dai->idma_playback.dma_addr); |
1015 | ||
1c7ac018 JB |
1016 | probe_exit: |
1017 | /* Reset any constraint on RFS and BFS */ | |
1018 | i2s->rfs = 0; | |
1019 | i2s->bfs = 0; | |
d66eac3e | 1020 | i2s->rclk_srcrate = 0; |
1c7ac018 JB |
1021 | i2s_txctrl(i2s, 0); |
1022 | i2s_rxctrl(i2s, 0); | |
1023 | i2s_fifo(i2s, FIC_TXFLUSH); | |
1024 | i2s_fifo(other, FIC_TXFLUSH); | |
1025 | i2s_fifo(i2s, FIC_RXFLUSH); | |
1026 | ||
1027 | /* Gate CDCLK by default */ | |
1028 | if (!is_opened(other)) | |
1029 | i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK, | |
1030 | 0, SND_SOC_CLOCK_IN); | |
1031 | ||
1032 | return 0; | |
1033 | } | |
1034 | ||
1035 | static int samsung_i2s_dai_remove(struct snd_soc_dai *dai) | |
1036 | { | |
1037 | struct i2s_dai *i2s = snd_soc_dai_get_drvdata(dai); | |
1038 | struct i2s_dai *other = i2s->pri_dai ? : i2s->sec_dai; | |
1039 | ||
1040 | if (!other || !other->clk) { | |
1041 | ||
1042 | if (i2s->quirks & QUIRK_NEED_RSTCLR) | |
1043 | writel(0, i2s->addr + I2SCON); | |
1044 | ||
98614cf6 | 1045 | clk_disable_unprepare(i2s->clk); |
1c7ac018 JB |
1046 | clk_put(i2s->clk); |
1047 | ||
1048 | iounmap(i2s->addr); | |
1049 | } | |
1050 | ||
1051 | i2s->clk = NULL; | |
1052 | ||
1053 | return 0; | |
1054 | } | |
1055 | ||
85e7652d | 1056 | static const struct snd_soc_dai_ops samsung_i2s_dai_ops = { |
1c7ac018 JB |
1057 | .trigger = i2s_trigger, |
1058 | .hw_params = i2s_hw_params, | |
1059 | .set_fmt = i2s_set_fmt, | |
1060 | .set_clkdiv = i2s_set_clkdiv, | |
1061 | .set_sysclk = i2s_set_sysclk, | |
1062 | .startup = i2s_startup, | |
1063 | .shutdown = i2s_shutdown, | |
1064 | .delay = i2s_delay, | |
1065 | }; | |
1066 | ||
4b828535 KM |
1067 | static const struct snd_soc_component_driver samsung_i2s_component = { |
1068 | .name = "samsung-i2s", | |
1069 | }; | |
1070 | ||
1c7ac018 JB |
1071 | #define SAMSUNG_I2S_RATES SNDRV_PCM_RATE_8000_96000 |
1072 | ||
1073 | #define SAMSUNG_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | \ | |
1074 | SNDRV_PCM_FMTBIT_S16_LE | \ | |
1075 | SNDRV_PCM_FMTBIT_S24_LE) | |
1076 | ||
fdca21ad | 1077 | static struct i2s_dai *i2s_alloc_dai(struct platform_device *pdev, bool sec) |
1c7ac018 JB |
1078 | { |
1079 | struct i2s_dai *i2s; | |
c6f9b1eb | 1080 | int ret; |
1c7ac018 | 1081 | |
b960ce74 | 1082 | i2s = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dai), GFP_KERNEL); |
1c7ac018 JB |
1083 | if (i2s == NULL) |
1084 | return NULL; | |
1085 | ||
1086 | i2s->pdev = pdev; | |
1087 | i2s->pri_dai = NULL; | |
1088 | i2s->sec_dai = NULL; | |
1089 | i2s->i2s_dai_drv.symmetric_rates = 1; | |
1090 | i2s->i2s_dai_drv.probe = samsung_i2s_dai_probe; | |
1091 | i2s->i2s_dai_drv.remove = samsung_i2s_dai_remove; | |
1092 | i2s->i2s_dai_drv.ops = &samsung_i2s_dai_ops; | |
1093 | i2s->i2s_dai_drv.suspend = i2s_suspend; | |
1094 | i2s->i2s_dai_drv.resume = i2s_resume; | |
a0ff6ea2 | 1095 | i2s->i2s_dai_drv.playback.channels_min = 1; |
1c7ac018 JB |
1096 | i2s->i2s_dai_drv.playback.channels_max = 2; |
1097 | i2s->i2s_dai_drv.playback.rates = SAMSUNG_I2S_RATES; | |
1098 | i2s->i2s_dai_drv.playback.formats = SAMSUNG_I2S_FMTS; | |
1099 | ||
1100 | if (!sec) { | |
588fb705 | 1101 | i2s->i2s_dai_drv.capture.channels_min = 1; |
1c7ac018 JB |
1102 | i2s->i2s_dai_drv.capture.channels_max = 2; |
1103 | i2s->i2s_dai_drv.capture.rates = SAMSUNG_I2S_RATES; | |
1104 | i2s->i2s_dai_drv.capture.formats = SAMSUNG_I2S_FMTS; | |
c6f9b1eb | 1105 | dev_set_drvdata(&i2s->pdev->dev, i2s); |
1c7ac018 | 1106 | } else { /* Create a new platform_device for Secondary */ |
c6f9b1eb | 1107 | i2s->pdev = platform_device_alloc("samsung-i2s-sec", -1); |
29ca9c73 | 1108 | if (!i2s->pdev) |
1c7ac018 | 1109 | return NULL; |
1c7ac018 | 1110 | |
2f6f0ffb MB |
1111 | i2s->pdev->dev.parent = &pdev->dev; |
1112 | ||
c6f9b1eb P |
1113 | platform_set_drvdata(i2s->pdev, i2s); |
1114 | ret = platform_device_add(i2s->pdev); | |
1115 | if (ret < 0) | |
1116 | return NULL; | |
1117 | } | |
1c7ac018 JB |
1118 | |
1119 | return i2s; | |
1120 | } | |
1121 | ||
40476f61 PV |
1122 | static const struct of_device_id exynos_i2s_match[]; |
1123 | ||
7da493e9 PV |
1124 | static inline const struct samsung_i2s_dai_data *samsung_i2s_get_driver_data( |
1125 | struct platform_device *pdev) | |
7c62eebb | 1126 | { |
40476f61 | 1127 | #ifdef CONFIG_OF |
40476f61 PV |
1128 | if (pdev->dev.of_node) { |
1129 | const struct of_device_id *match; | |
1130 | match = of_match_node(exynos_i2s_match, pdev->dev.of_node); | |
7da493e9 | 1131 | return match->data; |
40476f61 PV |
1132 | } else |
1133 | #endif | |
7da493e9 PV |
1134 | return (struct samsung_i2s_dai_data *) |
1135 | platform_get_device_id(pdev)->driver_data; | |
7c62eebb PV |
1136 | } |
1137 | ||
5b1d3c34 C |
1138 | #ifdef CONFIG_PM_RUNTIME |
1139 | static int i2s_runtime_suspend(struct device *dev) | |
1140 | { | |
1141 | struct i2s_dai *i2s = dev_get_drvdata(dev); | |
1142 | ||
1143 | clk_disable_unprepare(i2s->clk); | |
1144 | ||
1145 | return 0; | |
1146 | } | |
1147 | ||
1148 | static int i2s_runtime_resume(struct device *dev) | |
1149 | { | |
1150 | struct i2s_dai *i2s = dev_get_drvdata(dev); | |
1151 | ||
1152 | clk_prepare_enable(i2s->clk); | |
1153 | ||
1154 | return 0; | |
1155 | } | |
1156 | #endif /* CONFIG_PM_RUNTIME */ | |
1157 | ||
fdca21ad | 1158 | static int samsung_i2s_probe(struct platform_device *pdev) |
1c7ac018 | 1159 | { |
1c7ac018 | 1160 | struct i2s_dai *pri_dai, *sec_dai = NULL; |
40476f61 PV |
1161 | struct s3c_audio_pdata *i2s_pdata = pdev->dev.platform_data; |
1162 | struct samsung_i2s *i2s_cfg = NULL; | |
1c7ac018 | 1163 | struct resource *res; |
40476f61 PV |
1164 | u32 regs_base, quirks = 0, idma_addr = 0; |
1165 | struct device_node *np = pdev->dev.of_node; | |
7da493e9 | 1166 | const struct samsung_i2s_dai_data *i2s_dai_data; |
1c7ac018 JB |
1167 | int ret = 0; |
1168 | ||
1169 | /* Call during Seconday interface registration */ | |
7da493e9 | 1170 | i2s_dai_data = samsung_i2s_get_driver_data(pdev); |
7c62eebb | 1171 | |
7da493e9 | 1172 | if (i2s_dai_data->dai_type == TYPE_SEC) { |
1c7ac018 | 1173 | sec_dai = dev_get_drvdata(&pdev->dev); |
a9b977ec P |
1174 | if (!sec_dai) { |
1175 | dev_err(&pdev->dev, "Unable to get drvdata\n"); | |
1176 | return -EFAULT; | |
1177 | } | |
d644a115 MB |
1178 | devm_snd_soc_register_component(&sec_dai->pdev->dev, |
1179 | &samsung_i2s_component, | |
1180 | &sec_dai->i2s_dai_drv, 1); | |
85ff3c29 | 1181 | samsung_asoc_dma_platform_register(&pdev->dev); |
1c7ac018 JB |
1182 | return 0; |
1183 | } | |
1184 | ||
40476f61 PV |
1185 | pri_dai = i2s_alloc_dai(pdev, false); |
1186 | if (!pri_dai) { | |
1187 | dev_err(&pdev->dev, "Unable to alloc I2S_pri\n"); | |
1188 | return -ENOMEM; | |
1c7ac018 JB |
1189 | } |
1190 | ||
40476f61 PV |
1191 | if (!np) { |
1192 | res = platform_get_resource(pdev, IORESOURCE_DMA, 0); | |
1193 | if (!res) { | |
1194 | dev_err(&pdev->dev, | |
1195 | "Unable to get I2S-TX dma resource\n"); | |
1196 | return -ENXIO; | |
1197 | } | |
1198 | pri_dai->dma_playback.channel = res->start; | |
1c7ac018 | 1199 | |
40476f61 PV |
1200 | res = platform_get_resource(pdev, IORESOURCE_DMA, 1); |
1201 | if (!res) { | |
1202 | dev_err(&pdev->dev, | |
1203 | "Unable to get I2S-RX dma resource\n"); | |
1204 | return -ENXIO; | |
1205 | } | |
1206 | pri_dai->dma_capture.channel = res->start; | |
1c7ac018 | 1207 | |
40476f61 PV |
1208 | if (i2s_pdata == NULL) { |
1209 | dev_err(&pdev->dev, "Can't work without s3c_audio_pdata\n"); | |
1210 | return -EINVAL; | |
1211 | } | |
1212 | ||
1213 | if (&i2s_pdata->type) | |
1214 | i2s_cfg = &i2s_pdata->type.i2s; | |
1215 | ||
1216 | if (i2s_cfg) { | |
1217 | quirks = i2s_cfg->quirks; | |
1218 | idma_addr = i2s_cfg->idma_addr; | |
1219 | } | |
1220 | } else { | |
7da493e9 | 1221 | quirks = i2s_dai_data->quirks; |
40476f61 PV |
1222 | if (of_property_read_u32(np, "samsung,idma-addr", |
1223 | &idma_addr)) { | |
b0759736 PV |
1224 | if (quirks & QUIRK_SUPPORTS_IDMA) { |
1225 | dev_info(&pdev->dev, "idma address is not"\ | |
40476f61 | 1226 | "specified"); |
40476f61 PV |
1227 | } |
1228 | } | |
1229 | } | |
1c7ac018 JB |
1230 | |
1231 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
1232 | if (!res) { | |
1233 | dev_err(&pdev->dev, "Unable to get I2S SFR address\n"); | |
1234 | return -ENXIO; | |
1235 | } | |
1236 | ||
1237 | if (!request_mem_region(res->start, resource_size(res), | |
1238 | "samsung-i2s")) { | |
1239 | dev_err(&pdev->dev, "Unable to request SFR region\n"); | |
1240 | return -EBUSY; | |
1241 | } | |
1242 | regs_base = res->start; | |
1243 | ||
1c7ac018 JB |
1244 | pri_dai->dma_playback.dma_addr = regs_base + I2STXD; |
1245 | pri_dai->dma_capture.dma_addr = regs_base + I2SRXD; | |
40476f61 | 1246 | pri_dai->dma_playback.ch_name = "tx"; |
40476f61 | 1247 | pri_dai->dma_capture.ch_name = "rx"; |
1c7ac018 JB |
1248 | pri_dai->dma_playback.dma_size = 4; |
1249 | pri_dai->dma_capture.dma_size = 4; | |
1250 | pri_dai->base = regs_base; | |
1251 | pri_dai->quirks = quirks; | |
a5a56871 | 1252 | pri_dai->variant_regs = i2s_dai_data->i2s_variant_regs; |
1c7ac018 JB |
1253 | |
1254 | if (quirks & QUIRK_PRI_6CHAN) | |
1255 | pri_dai->i2s_dai_drv.playback.channels_max = 6; | |
1256 | ||
1257 | if (quirks & QUIRK_SEC_DAI) { | |
1258 | sec_dai = i2s_alloc_dai(pdev, true); | |
1259 | if (!sec_dai) { | |
1260 | dev_err(&pdev->dev, "Unable to alloc I2S_sec\n"); | |
1261 | ret = -ENOMEM; | |
b960ce74 | 1262 | goto err; |
1c7ac018 JB |
1263 | } |
1264 | sec_dai->dma_playback.dma_addr = regs_base + I2STXDS; | |
40476f61 PV |
1265 | sec_dai->dma_playback.ch_name = "tx-sec"; |
1266 | ||
1267 | if (!np) { | |
1268 | res = platform_get_resource(pdev, IORESOURCE_DMA, 2); | |
1269 | if (res) | |
1270 | sec_dai->dma_playback.channel = res->start; | |
1271 | } | |
1272 | ||
1c7ac018 JB |
1273 | sec_dai->dma_playback.dma_size = 4; |
1274 | sec_dai->base = regs_base; | |
1275 | sec_dai->quirks = quirks; | |
40476f61 | 1276 | sec_dai->idma_playback.dma_addr = idma_addr; |
1c7ac018 JB |
1277 | sec_dai->pri_dai = pri_dai; |
1278 | pri_dai->sec_dai = sec_dai; | |
1279 | } | |
1280 | ||
0429ffef MB |
1281 | if (i2s_pdata && i2s_pdata->cfg_gpio && i2s_pdata->cfg_gpio(pdev)) { |
1282 | dev_err(&pdev->dev, "Unable to configure gpio\n"); | |
1283 | ret = -EINVAL; | |
1284 | goto err; | |
1c7ac018 JB |
1285 | } |
1286 | ||
d644a115 MB |
1287 | devm_snd_soc_register_component(&pri_dai->pdev->dev, |
1288 | &samsung_i2s_component, | |
1289 | &pri_dai->i2s_dai_drv, 1); | |
1c7ac018 | 1290 | |
c5cf4dbc MB |
1291 | pm_runtime_enable(&pdev->dev); |
1292 | ||
85ff3c29 | 1293 | samsung_asoc_dma_platform_register(&pdev->dev); |
a08485d8 | 1294 | |
1c7ac018 | 1295 | return 0; |
b960ce74 | 1296 | err: |
57e33781 SK |
1297 | if (res) |
1298 | release_mem_region(regs_base, resource_size(res)); | |
1c7ac018 JB |
1299 | |
1300 | return ret; | |
1301 | } | |
1302 | ||
fdca21ad | 1303 | static int samsung_i2s_remove(struct platform_device *pdev) |
1c7ac018 JB |
1304 | { |
1305 | struct i2s_dai *i2s, *other; | |
c5cf4dbc | 1306 | struct resource *res; |
1c7ac018 JB |
1307 | |
1308 | i2s = dev_get_drvdata(&pdev->dev); | |
1309 | other = i2s->pri_dai ? : i2s->sec_dai; | |
1310 | ||
1311 | if (other) { | |
1312 | other->pri_dai = NULL; | |
1313 | other->sec_dai = NULL; | |
1314 | } else { | |
c5cf4dbc | 1315 | pm_runtime_disable(&pdev->dev); |
1c7ac018 JB |
1316 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
1317 | if (res) | |
1318 | release_mem_region(res->start, resource_size(res)); | |
1319 | } | |
1320 | ||
1321 | i2s->pri_dai = NULL; | |
1322 | i2s->sec_dai = NULL; | |
1323 | ||
1c7ac018 JB |
1324 | return 0; |
1325 | } | |
1326 | ||
a5a56871 PV |
1327 | static const struct samsung_i2s_variant_regs i2sv3_regs = { |
1328 | .bfs_off = 1, | |
1329 | .rfs_off = 3, | |
1330 | .sdf_off = 5, | |
1331 | .txr_off = 8, | |
1332 | .rclksrc_off = 10, | |
1333 | .mss_off = 11, | |
1334 | .cdclkcon_off = 12, | |
1335 | .lrp_off = 7, | |
1336 | .bfs_mask = 0x3, | |
1337 | .rfs_mask = 0x3, | |
1338 | .ftx0cnt_off = 8, | |
1339 | }; | |
1340 | ||
1341 | static const struct samsung_i2s_variant_regs i2sv6_regs = { | |
1342 | .bfs_off = 0, | |
1343 | .rfs_off = 4, | |
1344 | .sdf_off = 6, | |
1345 | .txr_off = 8, | |
1346 | .rclksrc_off = 10, | |
1347 | .mss_off = 11, | |
1348 | .cdclkcon_off = 12, | |
1349 | .lrp_off = 15, | |
1350 | .bfs_mask = 0xf, | |
1351 | .rfs_mask = 0x3, | |
1352 | .ftx0cnt_off = 8, | |
1353 | }; | |
1354 | ||
1355 | static const struct samsung_i2s_variant_regs i2sv7_regs = { | |
1356 | .bfs_off = 0, | |
1357 | .rfs_off = 4, | |
1358 | .sdf_off = 7, | |
1359 | .txr_off = 9, | |
1360 | .rclksrc_off = 11, | |
1361 | .mss_off = 12, | |
1362 | .cdclkcon_off = 22, | |
1363 | .lrp_off = 15, | |
1364 | .bfs_mask = 0xf, | |
1365 | .rfs_mask = 0x7, | |
1366 | .ftx0cnt_off = 0, | |
1367 | }; | |
1368 | ||
1369 | static const struct samsung_i2s_variant_regs i2sv5_i2s1_regs = { | |
1370 | .bfs_off = 0, | |
1371 | .rfs_off = 3, | |
1372 | .sdf_off = 6, | |
1373 | .txr_off = 8, | |
1374 | .rclksrc_off = 10, | |
1375 | .mss_off = 11, | |
1376 | .cdclkcon_off = 12, | |
1377 | .lrp_off = 15, | |
1378 | .bfs_mask = 0x7, | |
1379 | .rfs_mask = 0x7, | |
1380 | .ftx0cnt_off = 8, | |
1381 | }; | |
1382 | ||
7da493e9 PV |
1383 | static const struct samsung_i2s_dai_data i2sv3_dai_type = { |
1384 | .dai_type = TYPE_PRI, | |
1385 | .quirks = QUIRK_NO_MUXPSR, | |
a5a56871 | 1386 | .i2s_variant_regs = &i2sv3_regs, |
7da493e9 PV |
1387 | }; |
1388 | ||
1389 | static const struct samsung_i2s_dai_data i2sv5_dai_type = { | |
1390 | .dai_type = TYPE_PRI, | |
b0759736 PV |
1391 | .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR | |
1392 | QUIRK_SUPPORTS_IDMA, | |
a5a56871 | 1393 | .i2s_variant_regs = &i2sv3_regs, |
7da493e9 PV |
1394 | }; |
1395 | ||
4ca0c0d4 PV |
1396 | static const struct samsung_i2s_dai_data i2sv6_dai_type = { |
1397 | .dai_type = TYPE_PRI, | |
1398 | .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR | | |
b0759736 | 1399 | QUIRK_SUPPORTS_TDM | QUIRK_SUPPORTS_IDMA, |
a5a56871 PV |
1400 | .i2s_variant_regs = &i2sv6_regs, |
1401 | }; | |
1402 | ||
1403 | static const struct samsung_i2s_dai_data i2sv7_dai_type = { | |
1404 | .dai_type = TYPE_PRI, | |
1405 | .quirks = QUIRK_PRI_6CHAN | QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR | | |
1406 | QUIRK_SUPPORTS_TDM, | |
1407 | .i2s_variant_regs = &i2sv7_regs, | |
1408 | }; | |
1409 | ||
1410 | static const struct samsung_i2s_dai_data i2sv5_dai_type_i2s1 = { | |
1411 | .dai_type = TYPE_PRI, | |
1412 | .quirks = QUIRK_PRI_6CHAN | QUIRK_NEED_RSTCLR, | |
1413 | .i2s_variant_regs = &i2sv5_i2s1_regs, | |
4ca0c0d4 PV |
1414 | }; |
1415 | ||
7da493e9 PV |
1416 | static const struct samsung_i2s_dai_data samsung_dai_type_pri = { |
1417 | .dai_type = TYPE_PRI, | |
1418 | }; | |
1419 | ||
1420 | static const struct samsung_i2s_dai_data samsung_dai_type_sec = { | |
1421 | .dai_type = TYPE_SEC, | |
1422 | }; | |
1423 | ||
7c62eebb PV |
1424 | static struct platform_device_id samsung_i2s_driver_ids[] = { |
1425 | { | |
1426 | .name = "samsung-i2s", | |
7da493e9 | 1427 | .driver_data = (kernel_ulong_t)&samsung_dai_type_pri, |
7c62eebb PV |
1428 | }, { |
1429 | .name = "samsung-i2s-sec", | |
7da493e9 | 1430 | .driver_data = (kernel_ulong_t)&samsung_dai_type_sec, |
7c62eebb PV |
1431 | }, |
1432 | {}, | |
1433 | }; | |
2af19558 | 1434 | MODULE_DEVICE_TABLE(platform, samsung_i2s_driver_ids); |
7c62eebb | 1435 | |
40476f61 | 1436 | #ifdef CONFIG_OF |
40476f61 | 1437 | static const struct of_device_id exynos_i2s_match[] = { |
7da493e9 PV |
1438 | { |
1439 | .compatible = "samsung,s3c6410-i2s", | |
1440 | .data = &i2sv3_dai_type, | |
1441 | }, { | |
1442 | .compatible = "samsung,s5pv210-i2s", | |
1443 | .data = &i2sv5_dai_type, | |
4ca0c0d4 PV |
1444 | }, { |
1445 | .compatible = "samsung,exynos5420-i2s", | |
1446 | .data = &i2sv6_dai_type, | |
a5a56871 PV |
1447 | }, { |
1448 | .compatible = "samsung,exynos7-i2s", | |
1449 | .data = &i2sv7_dai_type, | |
1450 | }, { | |
1451 | .compatible = "samsung,exynos7-i2s1", | |
1452 | .data = &i2sv5_dai_type_i2s1, | |
40476f61 PV |
1453 | }, |
1454 | {}, | |
1455 | }; | |
1456 | MODULE_DEVICE_TABLE(of, exynos_i2s_match); | |
1457 | #endif | |
1458 | ||
5b1d3c34 C |
1459 | static const struct dev_pm_ops samsung_i2s_pm = { |
1460 | SET_RUNTIME_PM_OPS(i2s_runtime_suspend, | |
1461 | i2s_runtime_resume, NULL) | |
1462 | }; | |
1463 | ||
1c7ac018 JB |
1464 | static struct platform_driver samsung_i2s_driver = { |
1465 | .probe = samsung_i2s_probe, | |
fdca21ad | 1466 | .remove = samsung_i2s_remove, |
7c62eebb | 1467 | .id_table = samsung_i2s_driver_ids, |
1c7ac018 JB |
1468 | .driver = { |
1469 | .name = "samsung-i2s", | |
1470 | .owner = THIS_MODULE, | |
40476f61 | 1471 | .of_match_table = of_match_ptr(exynos_i2s_match), |
5b1d3c34 | 1472 | .pm = &samsung_i2s_pm, |
1c7ac018 JB |
1473 | }, |
1474 | }; | |
1475 | ||
e00c3f55 | 1476 | module_platform_driver(samsung_i2s_driver); |
1c7ac018 JB |
1477 | |
1478 | /* Module information */ | |
df8ad335 | 1479 | MODULE_AUTHOR("Jaswinder Singh, <jassisinghbrar@gmail.com>"); |
1c7ac018 JB |
1480 | MODULE_DESCRIPTION("Samsung I2S Interface"); |
1481 | MODULE_ALIAS("platform:samsung-i2s"); | |
1482 | MODULE_LICENSE("GPL"); |