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71bb8a1b VK |
1 | // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) |
2 | // Copyright(c) 2015-17 Intel Corporation. | |
3 | ||
4 | /* | |
5 | * Soundwire Intel Master Driver | |
6 | */ | |
7 | ||
8 | #include <linux/acpi.h> | |
9 | #include <linux/delay.h> | |
4abbd783 | 10 | #include <linux/module.h> |
71bb8a1b VK |
11 | #include <linux/interrupt.h> |
12 | #include <linux/platform_device.h> | |
37a2d22b VK |
13 | #include <sound/pcm_params.h> |
14 | #include <sound/soc.h> | |
71bb8a1b VK |
15 | #include <linux/soundwire/sdw_registers.h> |
16 | #include <linux/soundwire/sdw.h> | |
17 | #include <linux/soundwire/sdw_intel.h> | |
18 | #include "cadence_master.h" | |
19 | #include "intel.h" | |
20 | ||
21 | /* Intel SHIM Registers Definition */ | |
22 | #define SDW_SHIM_LCAP 0x0 | |
23 | #define SDW_SHIM_LCTL 0x4 | |
24 | #define SDW_SHIM_IPPTR 0x8 | |
25 | #define SDW_SHIM_SYNC 0xC | |
26 | ||
7cc6e315 PLB |
27 | #define SDW_SHIM_CTLSCAP(x) (0x010 + 0x60 * (x)) |
28 | #define SDW_SHIM_CTLS0CM(x) (0x012 + 0x60 * (x)) | |
29 | #define SDW_SHIM_CTLS1CM(x) (0x014 + 0x60 * (x)) | |
30 | #define SDW_SHIM_CTLS2CM(x) (0x016 + 0x60 * (x)) | |
31 | #define SDW_SHIM_CTLS3CM(x) (0x018 + 0x60 * (x)) | |
32 | #define SDW_SHIM_PCMSCAP(x) (0x020 + 0x60 * (x)) | |
33 | ||
34 | #define SDW_SHIM_PCMSYCHM(x, y) (0x022 + (0x60 * (x)) + (0x2 * (y))) | |
35 | #define SDW_SHIM_PCMSYCHC(x, y) (0x042 + (0x60 * (x)) + (0x2 * (y))) | |
36 | #define SDW_SHIM_PDMSCAP(x) (0x062 + 0x60 * (x)) | |
37 | #define SDW_SHIM_IOCTL(x) (0x06C + 0x60 * (x)) | |
38 | #define SDW_SHIM_CTMCTL(x) (0x06E + 0x60 * (x)) | |
71bb8a1b VK |
39 | |
40 | #define SDW_SHIM_WAKEEN 0x190 | |
41 | #define SDW_SHIM_WAKESTS 0x192 | |
42 | ||
43 | #define SDW_SHIM_LCTL_SPA BIT(0) | |
44 | #define SDW_SHIM_LCTL_CPA BIT(8) | |
45 | ||
46 | #define SDW_SHIM_SYNC_SYNCPRD_VAL 0x176F | |
47 | #define SDW_SHIM_SYNC_SYNCPRD GENMASK(14, 0) | |
48 | #define SDW_SHIM_SYNC_SYNCCPU BIT(15) | |
49 | #define SDW_SHIM_SYNC_CMDSYNC_MASK GENMASK(19, 16) | |
50 | #define SDW_SHIM_SYNC_CMDSYNC BIT(16) | |
51 | #define SDW_SHIM_SYNC_SYNCGO BIT(24) | |
52 | ||
53 | #define SDW_SHIM_PCMSCAP_ISS GENMASK(3, 0) | |
54 | #define SDW_SHIM_PCMSCAP_OSS GENMASK(7, 4) | |
55 | #define SDW_SHIM_PCMSCAP_BSS GENMASK(12, 8) | |
56 | ||
57 | #define SDW_SHIM_PCMSYCM_LCHN GENMASK(3, 0) | |
58 | #define SDW_SHIM_PCMSYCM_HCHN GENMASK(7, 4) | |
59 | #define SDW_SHIM_PCMSYCM_STREAM GENMASK(13, 8) | |
60 | #define SDW_SHIM_PCMSYCM_DIR BIT(15) | |
61 | ||
62 | #define SDW_SHIM_PDMSCAP_ISS GENMASK(3, 0) | |
63 | #define SDW_SHIM_PDMSCAP_OSS GENMASK(7, 4) | |
64 | #define SDW_SHIM_PDMSCAP_BSS GENMASK(12, 8) | |
65 | #define SDW_SHIM_PDMSCAP_CPSS GENMASK(15, 13) | |
66 | ||
67 | #define SDW_SHIM_IOCTL_MIF BIT(0) | |
68 | #define SDW_SHIM_IOCTL_CO BIT(1) | |
69 | #define SDW_SHIM_IOCTL_COE BIT(2) | |
70 | #define SDW_SHIM_IOCTL_DO BIT(3) | |
71 | #define SDW_SHIM_IOCTL_DOE BIT(4) | |
72 | #define SDW_SHIM_IOCTL_BKE BIT(5) | |
73 | #define SDW_SHIM_IOCTL_WPDD BIT(6) | |
74 | #define SDW_SHIM_IOCTL_CIBD BIT(8) | |
75 | #define SDW_SHIM_IOCTL_DIBD BIT(9) | |
76 | ||
77 | #define SDW_SHIM_CTMCTL_DACTQE BIT(0) | |
78 | #define SDW_SHIM_CTMCTL_DODS BIT(1) | |
79 | #define SDW_SHIM_CTMCTL_DOAIS GENMASK(4, 3) | |
80 | ||
81 | #define SDW_SHIM_WAKEEN_ENABLE BIT(0) | |
82 | #define SDW_SHIM_WAKESTS_STATUS BIT(0) | |
83 | ||
84 | /* Intel ALH Register definitions */ | |
7cc6e315 | 85 | #define SDW_ALH_STRMZCFG(x) (0x000 + (0x4 * (x))) |
71bb8a1b VK |
86 | |
87 | #define SDW_ALH_STRMZCFG_DMAT_VAL 0x3 | |
88 | #define SDW_ALH_STRMZCFG_DMAT GENMASK(7, 0) | |
89 | #define SDW_ALH_STRMZCFG_CHN GENMASK(19, 16) | |
90 | ||
c46302ec VK |
91 | enum intel_pdi_type { |
92 | INTEL_PDI_IN = 0, | |
93 | INTEL_PDI_OUT = 1, | |
94 | INTEL_PDI_BD = 2, | |
95 | }; | |
96 | ||
71bb8a1b VK |
97 | struct sdw_intel { |
98 | struct sdw_cdns cdns; | |
99 | int instance; | |
100 | struct sdw_intel_link_res *res; | |
101 | }; | |
102 | ||
103 | #define cdns_to_intel(_cdns) container_of(_cdns, struct sdw_intel, cdns) | |
104 | ||
105 | /* | |
106 | * Read, write helpers for HW registers | |
107 | */ | |
108 | static inline int intel_readl(void __iomem *base, int offset) | |
109 | { | |
110 | return readl(base + offset); | |
111 | } | |
112 | ||
113 | static inline void intel_writel(void __iomem *base, int offset, int value) | |
114 | { | |
115 | writel(value, base + offset); | |
116 | } | |
117 | ||
118 | static inline u16 intel_readw(void __iomem *base, int offset) | |
119 | { | |
120 | return readw(base + offset); | |
121 | } | |
122 | ||
123 | static inline void intel_writew(void __iomem *base, int offset, u16 value) | |
124 | { | |
125 | writew(value, base + offset); | |
126 | } | |
127 | ||
128 | static int intel_clear_bit(void __iomem *base, int offset, u32 value, u32 mask) | |
129 | { | |
130 | int timeout = 10; | |
131 | u32 reg_read; | |
132 | ||
133 | writel(value, base + offset); | |
134 | do { | |
135 | reg_read = readl(base + offset); | |
136 | if (!(reg_read & mask)) | |
137 | return 0; | |
138 | ||
139 | timeout--; | |
140 | udelay(50); | |
141 | } while (timeout != 0); | |
142 | ||
143 | return -EAGAIN; | |
144 | } | |
145 | ||
146 | static int intel_set_bit(void __iomem *base, int offset, u32 value, u32 mask) | |
147 | { | |
148 | int timeout = 10; | |
149 | u32 reg_read; | |
150 | ||
151 | writel(value, base + offset); | |
152 | do { | |
153 | reg_read = readl(base + offset); | |
154 | if (reg_read & mask) | |
155 | return 0; | |
156 | ||
157 | timeout--; | |
158 | udelay(50); | |
159 | } while (timeout != 0); | |
160 | ||
161 | return -EAGAIN; | |
162 | } | |
163 | ||
164 | /* | |
165 | * shim ops | |
166 | */ | |
167 | ||
168 | static int intel_link_power_up(struct sdw_intel *sdw) | |
169 | { | |
170 | unsigned int link_id = sdw->instance; | |
171 | void __iomem *shim = sdw->res->shim; | |
172 | int spa_mask, cpa_mask; | |
173 | int link_control, ret; | |
174 | ||
175 | /* Link power up sequence */ | |
176 | link_control = intel_readl(shim, SDW_SHIM_LCTL); | |
177 | spa_mask = (SDW_SHIM_LCTL_SPA << link_id); | |
178 | cpa_mask = (SDW_SHIM_LCTL_CPA << link_id); | |
179 | link_control |= spa_mask; | |
180 | ||
181 | ret = intel_set_bit(shim, SDW_SHIM_LCTL, link_control, cpa_mask); | |
182 | if (ret < 0) | |
183 | return ret; | |
184 | ||
185 | sdw->cdns.link_up = true; | |
186 | return 0; | |
187 | } | |
188 | ||
189 | static int intel_shim_init(struct sdw_intel *sdw) | |
190 | { | |
191 | void __iomem *shim = sdw->res->shim; | |
192 | unsigned int link_id = sdw->instance; | |
193 | int sync_reg, ret; | |
194 | u16 ioctl = 0, act = 0; | |
195 | ||
196 | /* Initialize Shim */ | |
197 | ioctl |= SDW_SHIM_IOCTL_BKE; | |
198 | intel_writew(shim, SDW_SHIM_IOCTL(link_id), ioctl); | |
199 | ||
200 | ioctl |= SDW_SHIM_IOCTL_WPDD; | |
201 | intel_writew(shim, SDW_SHIM_IOCTL(link_id), ioctl); | |
202 | ||
203 | ioctl |= SDW_SHIM_IOCTL_DO; | |
204 | intel_writew(shim, SDW_SHIM_IOCTL(link_id), ioctl); | |
205 | ||
206 | ioctl |= SDW_SHIM_IOCTL_DOE; | |
207 | intel_writew(shim, SDW_SHIM_IOCTL(link_id), ioctl); | |
208 | ||
209 | /* Switch to MIP from Glue logic */ | |
210 | ioctl = intel_readw(shim, SDW_SHIM_IOCTL(link_id)); | |
211 | ||
212 | ioctl &= ~(SDW_SHIM_IOCTL_DOE); | |
213 | intel_writew(shim, SDW_SHIM_IOCTL(link_id), ioctl); | |
214 | ||
215 | ioctl &= ~(SDW_SHIM_IOCTL_DO); | |
216 | intel_writew(shim, SDW_SHIM_IOCTL(link_id), ioctl); | |
217 | ||
218 | ioctl |= (SDW_SHIM_IOCTL_MIF); | |
219 | intel_writew(shim, SDW_SHIM_IOCTL(link_id), ioctl); | |
220 | ||
221 | ioctl &= ~(SDW_SHIM_IOCTL_BKE); | |
222 | ioctl &= ~(SDW_SHIM_IOCTL_COE); | |
223 | ||
224 | intel_writew(shim, SDW_SHIM_IOCTL(link_id), ioctl); | |
225 | ||
226 | act |= 0x1 << SDW_REG_SHIFT(SDW_SHIM_CTMCTL_DOAIS); | |
227 | act |= SDW_SHIM_CTMCTL_DACTQE; | |
228 | act |= SDW_SHIM_CTMCTL_DODS; | |
229 | intel_writew(shim, SDW_SHIM_CTMCTL(link_id), act); | |
230 | ||
231 | /* Now set SyncPRD period */ | |
232 | sync_reg = intel_readl(shim, SDW_SHIM_SYNC); | |
233 | sync_reg |= (SDW_SHIM_SYNC_SYNCPRD_VAL << | |
234 | SDW_REG_SHIFT(SDW_SHIM_SYNC_SYNCPRD)); | |
235 | ||
236 | /* Set SyncCPU bit */ | |
237 | sync_reg |= SDW_SHIM_SYNC_SYNCCPU; | |
238 | ret = intel_clear_bit(shim, SDW_SHIM_SYNC, sync_reg, | |
d542bc9e | 239 | SDW_SHIM_SYNC_SYNCCPU); |
71bb8a1b | 240 | if (ret < 0) |
17ed5bef | 241 | dev_err(sdw->cdns.dev, "Failed to set sync period: %d\n", ret); |
71bb8a1b VK |
242 | |
243 | return ret; | |
244 | } | |
245 | ||
37a2d22b VK |
246 | /* |
247 | * PDI routines | |
248 | */ | |
249 | static void intel_pdi_init(struct sdw_intel *sdw, | |
d542bc9e | 250 | struct sdw_cdns_stream_config *config) |
37a2d22b VK |
251 | { |
252 | void __iomem *shim = sdw->res->shim; | |
253 | unsigned int link_id = sdw->instance; | |
254 | int pcm_cap, pdm_cap; | |
255 | ||
256 | /* PCM Stream Capability */ | |
257 | pcm_cap = intel_readw(shim, SDW_SHIM_PCMSCAP(link_id)); | |
258 | ||
259 | config->pcm_bd = (pcm_cap & SDW_SHIM_PCMSCAP_BSS) >> | |
260 | SDW_REG_SHIFT(SDW_SHIM_PCMSCAP_BSS); | |
261 | config->pcm_in = (pcm_cap & SDW_SHIM_PCMSCAP_ISS) >> | |
262 | SDW_REG_SHIFT(SDW_SHIM_PCMSCAP_ISS); | |
263 | config->pcm_out = (pcm_cap & SDW_SHIM_PCMSCAP_OSS) >> | |
264 | SDW_REG_SHIFT(SDW_SHIM_PCMSCAP_OSS); | |
265 | ||
266 | /* PDM Stream Capability */ | |
267 | pdm_cap = intel_readw(shim, SDW_SHIM_PDMSCAP(link_id)); | |
268 | ||
269 | config->pdm_bd = (pdm_cap & SDW_SHIM_PDMSCAP_BSS) >> | |
270 | SDW_REG_SHIFT(SDW_SHIM_PDMSCAP_BSS); | |
271 | config->pdm_in = (pdm_cap & SDW_SHIM_PDMSCAP_ISS) >> | |
272 | SDW_REG_SHIFT(SDW_SHIM_PDMSCAP_ISS); | |
273 | config->pdm_out = (pdm_cap & SDW_SHIM_PDMSCAP_OSS) >> | |
274 | SDW_REG_SHIFT(SDW_SHIM_PDMSCAP_OSS); | |
275 | } | |
276 | ||
277 | static int | |
278 | intel_pdi_get_ch_cap(struct sdw_intel *sdw, unsigned int pdi_num, bool pcm) | |
279 | { | |
280 | void __iomem *shim = sdw->res->shim; | |
281 | unsigned int link_id = sdw->instance; | |
282 | int count; | |
283 | ||
284 | if (pcm) { | |
285 | count = intel_readw(shim, SDW_SHIM_PCMSYCHC(link_id, pdi_num)); | |
286 | } else { | |
287 | count = intel_readw(shim, SDW_SHIM_PDMSCAP(link_id)); | |
288 | count = ((count & SDW_SHIM_PDMSCAP_CPSS) >> | |
289 | SDW_REG_SHIFT(SDW_SHIM_PDMSCAP_CPSS)); | |
290 | } | |
291 | ||
292 | /* zero based values for channel count in register */ | |
293 | count++; | |
294 | ||
295 | return count; | |
296 | } | |
297 | ||
298 | static int intel_pdi_get_ch_update(struct sdw_intel *sdw, | |
d542bc9e PLB |
299 | struct sdw_cdns_pdi *pdi, |
300 | unsigned int num_pdi, | |
301 | unsigned int *num_ch, bool pcm) | |
37a2d22b VK |
302 | { |
303 | int i, ch_count = 0; | |
304 | ||
305 | for (i = 0; i < num_pdi; i++) { | |
306 | pdi->ch_count = intel_pdi_get_ch_cap(sdw, pdi->num, pcm); | |
307 | ch_count += pdi->ch_count; | |
308 | pdi++; | |
309 | } | |
310 | ||
311 | *num_ch = ch_count; | |
312 | return 0; | |
313 | } | |
314 | ||
315 | static int intel_pdi_stream_ch_update(struct sdw_intel *sdw, | |
d542bc9e | 316 | struct sdw_cdns_streams *stream, bool pcm) |
37a2d22b VK |
317 | { |
318 | intel_pdi_get_ch_update(sdw, stream->bd, stream->num_bd, | |
d542bc9e | 319 | &stream->num_ch_bd, pcm); |
37a2d22b VK |
320 | |
321 | intel_pdi_get_ch_update(sdw, stream->in, stream->num_in, | |
d542bc9e | 322 | &stream->num_ch_in, pcm); |
37a2d22b VK |
323 | |
324 | intel_pdi_get_ch_update(sdw, stream->out, stream->num_out, | |
d542bc9e | 325 | &stream->num_ch_out, pcm); |
37a2d22b VK |
326 | |
327 | return 0; | |
328 | } | |
329 | ||
330 | static int intel_pdi_ch_update(struct sdw_intel *sdw) | |
331 | { | |
332 | /* First update PCM streams followed by PDM streams */ | |
333 | intel_pdi_stream_ch_update(sdw, &sdw->cdns.pcm, true); | |
334 | intel_pdi_stream_ch_update(sdw, &sdw->cdns.pdm, false); | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
339 | static void | |
340 | intel_pdi_shim_configure(struct sdw_intel *sdw, struct sdw_cdns_pdi *pdi) | |
341 | { | |
342 | void __iomem *shim = sdw->res->shim; | |
343 | unsigned int link_id = sdw->instance; | |
344 | int pdi_conf = 0; | |
345 | ||
346 | pdi->intel_alh_id = (link_id * 16) + pdi->num + 5; | |
347 | ||
348 | /* | |
349 | * Program stream parameters to stream SHIM register | |
350 | * This is applicable for PCM stream only. | |
351 | */ | |
352 | if (pdi->type != SDW_STREAM_PCM) | |
353 | return; | |
354 | ||
355 | if (pdi->dir == SDW_DATA_DIR_RX) | |
356 | pdi_conf |= SDW_SHIM_PCMSYCM_DIR; | |
357 | else | |
358 | pdi_conf &= ~(SDW_SHIM_PCMSYCM_DIR); | |
359 | ||
360 | pdi_conf |= (pdi->intel_alh_id << | |
361 | SDW_REG_SHIFT(SDW_SHIM_PCMSYCM_STREAM)); | |
362 | pdi_conf |= (pdi->l_ch_num << SDW_REG_SHIFT(SDW_SHIM_PCMSYCM_LCHN)); | |
363 | pdi_conf |= (pdi->h_ch_num << SDW_REG_SHIFT(SDW_SHIM_PCMSYCM_HCHN)); | |
364 | ||
365 | intel_writew(shim, SDW_SHIM_PCMSYCHM(link_id, pdi->num), pdi_conf); | |
366 | } | |
367 | ||
368 | static void | |
369 | intel_pdi_alh_configure(struct sdw_intel *sdw, struct sdw_cdns_pdi *pdi) | |
370 | { | |
371 | void __iomem *alh = sdw->res->alh; | |
372 | unsigned int link_id = sdw->instance; | |
373 | unsigned int conf; | |
374 | ||
375 | pdi->intel_alh_id = (link_id * 16) + pdi->num + 5; | |
376 | ||
377 | /* Program Stream config ALH register */ | |
378 | conf = intel_readl(alh, SDW_ALH_STRMZCFG(pdi->intel_alh_id)); | |
379 | ||
380 | conf |= (SDW_ALH_STRMZCFG_DMAT_VAL << | |
381 | SDW_REG_SHIFT(SDW_ALH_STRMZCFG_DMAT)); | |
382 | ||
383 | conf |= ((pdi->ch_count - 1) << | |
384 | SDW_REG_SHIFT(SDW_ALH_STRMZCFG_CHN)); | |
385 | ||
386 | intel_writel(alh, SDW_ALH_STRMZCFG(pdi->intel_alh_id), conf); | |
387 | } | |
388 | ||
c46302ec | 389 | static int intel_config_stream(struct sdw_intel *sdw, |
d542bc9e PLB |
390 | struct snd_pcm_substream *substream, |
391 | struct snd_soc_dai *dai, | |
392 | struct snd_pcm_hw_params *hw_params, int link_id) | |
c46302ec VK |
393 | { |
394 | if (sdw->res->ops && sdw->res->ops->config_stream) | |
395 | return sdw->res->ops->config_stream(sdw->res->arg, | |
396 | substream, dai, hw_params, link_id); | |
397 | ||
398 | return -EIO; | |
399 | } | |
400 | ||
30246e2d SN |
401 | /* |
402 | * bank switch routines | |
403 | */ | |
404 | ||
405 | static int intel_pre_bank_switch(struct sdw_bus *bus) | |
406 | { | |
407 | struct sdw_cdns *cdns = bus_to_cdns(bus); | |
408 | struct sdw_intel *sdw = cdns_to_intel(cdns); | |
409 | void __iomem *shim = sdw->res->shim; | |
410 | int sync_reg; | |
411 | ||
412 | /* Write to register only for multi-link */ | |
413 | if (!bus->multi_link) | |
414 | return 0; | |
415 | ||
416 | /* Read SYNC register */ | |
417 | sync_reg = intel_readl(shim, SDW_SHIM_SYNC); | |
418 | sync_reg |= SDW_SHIM_SYNC_CMDSYNC << sdw->instance; | |
419 | intel_writel(shim, SDW_SHIM_SYNC, sync_reg); | |
420 | ||
421 | return 0; | |
422 | } | |
423 | ||
424 | static int intel_post_bank_switch(struct sdw_bus *bus) | |
425 | { | |
426 | struct sdw_cdns *cdns = bus_to_cdns(bus); | |
427 | struct sdw_intel *sdw = cdns_to_intel(cdns); | |
428 | void __iomem *shim = sdw->res->shim; | |
429 | int sync_reg, ret; | |
430 | ||
431 | /* Write to register only for multi-link */ | |
432 | if (!bus->multi_link) | |
433 | return 0; | |
434 | ||
435 | /* Read SYNC register */ | |
436 | sync_reg = intel_readl(shim, SDW_SHIM_SYNC); | |
437 | ||
438 | /* | |
439 | * post_bank_switch() ops is called from the bus in loop for | |
440 | * all the Masters in the steam with the expectation that | |
441 | * we trigger the bankswitch for the only first Master in the list | |
442 | * and do nothing for the other Masters | |
443 | * | |
444 | * So, set the SYNCGO bit only if CMDSYNC bit is set for any Master. | |
445 | */ | |
446 | if (!(sync_reg & SDW_SHIM_SYNC_CMDSYNC_MASK)) | |
447 | return 0; | |
448 | ||
449 | /* | |
450 | * Set SyncGO bit to synchronously trigger a bank switch for | |
451 | * all the masters. A write to SYNCGO bit clears CMDSYNC bit for all | |
452 | * the Masters. | |
453 | */ | |
454 | sync_reg |= SDW_SHIM_SYNC_SYNCGO; | |
455 | ||
456 | ret = intel_clear_bit(shim, SDW_SHIM_SYNC, sync_reg, | |
d542bc9e | 457 | SDW_SHIM_SYNC_SYNCGO); |
30246e2d | 458 | if (ret < 0) |
17ed5bef | 459 | dev_err(sdw->cdns.dev, "Post bank switch failed: %d\n", ret); |
30246e2d SN |
460 | |
461 | return ret; | |
462 | } | |
463 | ||
c46302ec VK |
464 | /* |
465 | * DAI routines | |
466 | */ | |
467 | ||
468 | static struct sdw_cdns_port *intel_alloc_port(struct sdw_intel *sdw, | |
d542bc9e | 469 | u32 ch, u32 dir, bool pcm) |
c46302ec VK |
470 | { |
471 | struct sdw_cdns *cdns = &sdw->cdns; | |
472 | struct sdw_cdns_port *port = NULL; | |
473 | int i, ret = 0; | |
474 | ||
475 | for (i = 0; i < cdns->num_ports; i++) { | |
2890a636 | 476 | if (cdns->ports[i].assigned) |
c46302ec VK |
477 | continue; |
478 | ||
479 | port = &cdns->ports[i]; | |
480 | port->assigned = true; | |
481 | port->direction = dir; | |
482 | port->ch = ch; | |
483 | break; | |
484 | } | |
485 | ||
486 | if (!port) { | |
487 | dev_err(cdns->dev, "Unable to find a free port\n"); | |
488 | return NULL; | |
489 | } | |
490 | ||
491 | if (pcm) { | |
492 | ret = sdw_cdns_alloc_stream(cdns, &cdns->pcm, port, ch, dir); | |
493 | if (ret) | |
494 | goto out; | |
495 | ||
496 | intel_pdi_shim_configure(sdw, port->pdi); | |
497 | sdw_cdns_config_stream(cdns, port, ch, dir, port->pdi); | |
498 | ||
499 | intel_pdi_alh_configure(sdw, port->pdi); | |
500 | ||
501 | } else { | |
502 | ret = sdw_cdns_alloc_stream(cdns, &cdns->pdm, port, ch, dir); | |
503 | } | |
504 | ||
505 | out: | |
506 | if (ret) { | |
507 | port->assigned = false; | |
508 | port = NULL; | |
509 | } | |
510 | ||
511 | return port; | |
512 | } | |
513 | ||
514 | static void intel_port_cleanup(struct sdw_cdns_dma_data *dma) | |
515 | { | |
516 | int i; | |
517 | ||
518 | for (i = 0; i < dma->nr_ports; i++) { | |
519 | if (dma->port[i]) { | |
520 | dma->port[i]->pdi->assigned = false; | |
521 | dma->port[i]->pdi = NULL; | |
522 | dma->port[i]->assigned = false; | |
523 | dma->port[i] = NULL; | |
524 | } | |
525 | } | |
526 | } | |
527 | ||
528 | static int intel_hw_params(struct snd_pcm_substream *substream, | |
d542bc9e PLB |
529 | struct snd_pcm_hw_params *params, |
530 | struct snd_soc_dai *dai) | |
c46302ec VK |
531 | { |
532 | struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai); | |
533 | struct sdw_intel *sdw = cdns_to_intel(cdns); | |
534 | struct sdw_cdns_dma_data *dma; | |
535 | struct sdw_stream_config sconfig; | |
536 | struct sdw_port_config *pconfig; | |
537 | int ret, i, ch, dir; | |
538 | bool pcm = true; | |
539 | ||
540 | dma = snd_soc_dai_get_dma_data(dai, substream); | |
541 | if (!dma) | |
542 | return -EIO; | |
543 | ||
544 | ch = params_channels(params); | |
545 | if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
546 | dir = SDW_DATA_DIR_RX; | |
547 | else | |
548 | dir = SDW_DATA_DIR_TX; | |
549 | ||
550 | if (dma->stream_type == SDW_STREAM_PDM) { | |
551 | /* TODO: Check whether PDM decimator is already in use */ | |
552 | dma->nr_ports = sdw_cdns_get_stream(cdns, &cdns->pdm, ch, dir); | |
553 | pcm = false; | |
554 | } else { | |
555 | dma->nr_ports = sdw_cdns_get_stream(cdns, &cdns->pcm, ch, dir); | |
556 | } | |
557 | ||
558 | if (!dma->nr_ports) { | |
17ed5bef | 559 | dev_err(dai->dev, "ports/resources not available\n"); |
c46302ec VK |
560 | return -EINVAL; |
561 | } | |
562 | ||
563 | dma->port = kcalloc(dma->nr_ports, sizeof(*dma->port), GFP_KERNEL); | |
564 | if (!dma->port) | |
565 | return -ENOMEM; | |
566 | ||
567 | for (i = 0; i < dma->nr_ports; i++) { | |
568 | dma->port[i] = intel_alloc_port(sdw, ch, dir, pcm); | |
569 | if (!dma->port[i]) { | |
570 | ret = -EINVAL; | |
571 | goto port_error; | |
572 | } | |
573 | } | |
574 | ||
575 | /* Inform DSP about PDI stream number */ | |
576 | for (i = 0; i < dma->nr_ports; i++) { | |
577 | ret = intel_config_stream(sdw, substream, dai, params, | |
d542bc9e | 578 | dma->port[i]->pdi->intel_alh_id); |
c46302ec VK |
579 | if (ret) |
580 | goto port_error; | |
581 | } | |
582 | ||
583 | sconfig.direction = dir; | |
584 | sconfig.ch_count = ch; | |
585 | sconfig.frame_rate = params_rate(params); | |
586 | sconfig.type = dma->stream_type; | |
587 | ||
588 | if (dma->stream_type == SDW_STREAM_PDM) { | |
589 | sconfig.frame_rate *= 50; | |
590 | sconfig.bps = 1; | |
591 | } else { | |
592 | sconfig.bps = snd_pcm_format_width(params_format(params)); | |
593 | } | |
594 | ||
595 | /* Port configuration */ | |
596 | pconfig = kcalloc(dma->nr_ports, sizeof(*pconfig), GFP_KERNEL); | |
597 | if (!pconfig) { | |
598 | ret = -ENOMEM; | |
599 | goto port_error; | |
600 | } | |
601 | ||
602 | for (i = 0; i < dma->nr_ports; i++) { | |
603 | pconfig[i].num = dma->port[i]->num; | |
604 | pconfig[i].ch_mask = (1 << ch) - 1; | |
605 | } | |
606 | ||
607 | ret = sdw_stream_add_master(&cdns->bus, &sconfig, | |
d542bc9e | 608 | pconfig, dma->nr_ports, dma->stream); |
c46302ec | 609 | if (ret) { |
17ed5bef | 610 | dev_err(cdns->dev, "add master to stream failed:%d\n", ret); |
c46302ec VK |
611 | goto stream_error; |
612 | } | |
613 | ||
614 | kfree(pconfig); | |
615 | return ret; | |
616 | ||
617 | stream_error: | |
618 | kfree(pconfig); | |
619 | port_error: | |
620 | intel_port_cleanup(dma); | |
621 | kfree(dma->port); | |
622 | return ret; | |
623 | } | |
624 | ||
625 | static int | |
626 | intel_hw_free(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) | |
627 | { | |
628 | struct sdw_cdns *cdns = snd_soc_dai_get_drvdata(dai); | |
629 | struct sdw_cdns_dma_data *dma; | |
630 | int ret; | |
631 | ||
632 | dma = snd_soc_dai_get_dma_data(dai, substream); | |
633 | if (!dma) | |
634 | return -EIO; | |
635 | ||
636 | ret = sdw_stream_remove_master(&cdns->bus, dma->stream); | |
637 | if (ret < 0) | |
17ed5bef | 638 | dev_err(dai->dev, "remove master from stream %s failed: %d\n", |
d542bc9e | 639 | dma->stream->name, ret); |
c46302ec VK |
640 | |
641 | intel_port_cleanup(dma); | |
642 | kfree(dma->port); | |
643 | return ret; | |
644 | } | |
645 | ||
646 | static int intel_pcm_set_sdw_stream(struct snd_soc_dai *dai, | |
d542bc9e | 647 | void *stream, int direction) |
c46302ec VK |
648 | { |
649 | return cdns_set_sdw_stream(dai, stream, true, direction); | |
650 | } | |
651 | ||
652 | static int intel_pdm_set_sdw_stream(struct snd_soc_dai *dai, | |
d542bc9e | 653 | void *stream, int direction) |
c46302ec VK |
654 | { |
655 | return cdns_set_sdw_stream(dai, stream, false, direction); | |
656 | } | |
657 | ||
b1635596 | 658 | static const struct snd_soc_dai_ops intel_pcm_dai_ops = { |
c46302ec VK |
659 | .hw_params = intel_hw_params, |
660 | .hw_free = intel_hw_free, | |
661 | .shutdown = sdw_cdns_shutdown, | |
662 | .set_sdw_stream = intel_pcm_set_sdw_stream, | |
663 | }; | |
664 | ||
b1635596 | 665 | static const struct snd_soc_dai_ops intel_pdm_dai_ops = { |
c46302ec VK |
666 | .hw_params = intel_hw_params, |
667 | .hw_free = intel_hw_free, | |
668 | .shutdown = sdw_cdns_shutdown, | |
669 | .set_sdw_stream = intel_pdm_set_sdw_stream, | |
670 | }; | |
671 | ||
672 | static const struct snd_soc_component_driver dai_component = { | |
673 | .name = "soundwire", | |
674 | }; | |
675 | ||
676 | static int intel_create_dai(struct sdw_cdns *cdns, | |
d542bc9e PLB |
677 | struct snd_soc_dai_driver *dais, |
678 | enum intel_pdi_type type, | |
679 | u32 num, u32 off, u32 max_ch, bool pcm) | |
c46302ec VK |
680 | { |
681 | int i; | |
682 | ||
683 | if (num == 0) | |
684 | return 0; | |
685 | ||
686 | /* TODO: Read supported rates/formats from hardware */ | |
687 | for (i = off; i < (off + num); i++) { | |
688 | dais[i].name = kasprintf(GFP_KERNEL, "SDW%d Pin%d", | |
d542bc9e | 689 | cdns->instance, i); |
c46302ec VK |
690 | if (!dais[i].name) |
691 | return -ENOMEM; | |
692 | ||
693 | if (type == INTEL_PDI_BD || type == INTEL_PDI_OUT) { | |
1215daee VK |
694 | dais[i].playback.stream_name = |
695 | kasprintf(GFP_KERNEL, "SDW%d Tx%d", | |
696 | cdns->instance, i); | |
c46302ec VK |
697 | if (!dais[i].playback.stream_name) { |
698 | kfree(dais[i].name); | |
699 | return -ENOMEM; | |
700 | } | |
701 | ||
702 | dais[i].playback.channels_min = 1; | |
703 | dais[i].playback.channels_max = max_ch; | |
704 | dais[i].playback.rates = SNDRV_PCM_RATE_48000; | |
705 | dais[i].playback.formats = SNDRV_PCM_FMTBIT_S16_LE; | |
706 | } | |
707 | ||
708 | if (type == INTEL_PDI_BD || type == INTEL_PDI_IN) { | |
1215daee VK |
709 | dais[i].capture.stream_name = |
710 | kasprintf(GFP_KERNEL, "SDW%d Rx%d", | |
711 | cdns->instance, i); | |
c46302ec VK |
712 | if (!dais[i].capture.stream_name) { |
713 | kfree(dais[i].name); | |
714 | kfree(dais[i].playback.stream_name); | |
715 | return -ENOMEM; | |
716 | } | |
717 | ||
718 | dais[i].playback.channels_min = 1; | |
719 | dais[i].playback.channels_max = max_ch; | |
720 | dais[i].capture.rates = SNDRV_PCM_RATE_48000; | |
721 | dais[i].capture.formats = SNDRV_PCM_FMTBIT_S16_LE; | |
722 | } | |
723 | ||
724 | dais[i].id = SDW_DAI_ID_RANGE_START + i; | |
725 | ||
726 | if (pcm) | |
727 | dais[i].ops = &intel_pcm_dai_ops; | |
728 | else | |
729 | dais[i].ops = &intel_pdm_dai_ops; | |
730 | } | |
731 | ||
732 | return 0; | |
733 | } | |
734 | ||
735 | static int intel_register_dai(struct sdw_intel *sdw) | |
736 | { | |
737 | struct sdw_cdns *cdns = &sdw->cdns; | |
738 | struct sdw_cdns_streams *stream; | |
739 | struct snd_soc_dai_driver *dais; | |
740 | int num_dai, ret, off = 0; | |
741 | ||
742 | /* DAIs are created based on total number of PDIs supported */ | |
743 | num_dai = cdns->pcm.num_pdi + cdns->pdm.num_pdi; | |
744 | ||
745 | dais = devm_kcalloc(cdns->dev, num_dai, sizeof(*dais), GFP_KERNEL); | |
746 | if (!dais) | |
747 | return -ENOMEM; | |
748 | ||
749 | /* Create PCM DAIs */ | |
750 | stream = &cdns->pcm; | |
751 | ||
1215daee VK |
752 | ret = intel_create_dai(cdns, dais, INTEL_PDI_IN, stream->num_in, |
753 | off, stream->num_ch_in, true); | |
c46302ec VK |
754 | if (ret) |
755 | return ret; | |
756 | ||
757 | off += cdns->pcm.num_in; | |
1215daee VK |
758 | ret = intel_create_dai(cdns, dais, INTEL_PDI_OUT, cdns->pcm.num_out, |
759 | off, stream->num_ch_out, true); | |
c46302ec VK |
760 | if (ret) |
761 | return ret; | |
762 | ||
763 | off += cdns->pcm.num_out; | |
1215daee VK |
764 | ret = intel_create_dai(cdns, dais, INTEL_PDI_BD, cdns->pcm.num_bd, |
765 | off, stream->num_ch_bd, true); | |
c46302ec VK |
766 | if (ret) |
767 | return ret; | |
768 | ||
769 | /* Create PDM DAIs */ | |
770 | stream = &cdns->pdm; | |
771 | off += cdns->pcm.num_bd; | |
1215daee VK |
772 | ret = intel_create_dai(cdns, dais, INTEL_PDI_IN, cdns->pdm.num_in, |
773 | off, stream->num_ch_in, false); | |
c46302ec VK |
774 | if (ret) |
775 | return ret; | |
776 | ||
777 | off += cdns->pdm.num_in; | |
1215daee VK |
778 | ret = intel_create_dai(cdns, dais, INTEL_PDI_OUT, cdns->pdm.num_out, |
779 | off, stream->num_ch_out, false); | |
c46302ec VK |
780 | if (ret) |
781 | return ret; | |
782 | ||
783 | off += cdns->pdm.num_bd; | |
1215daee VK |
784 | ret = intel_create_dai(cdns, dais, INTEL_PDI_BD, cdns->pdm.num_bd, |
785 | off, stream->num_ch_bd, false); | |
c46302ec VK |
786 | if (ret) |
787 | return ret; | |
788 | ||
789 | return snd_soc_register_component(cdns->dev, &dai_component, | |
d542bc9e | 790 | dais, num_dai); |
c46302ec VK |
791 | } |
792 | ||
71bb8a1b VK |
793 | static int intel_prop_read(struct sdw_bus *bus) |
794 | { | |
795 | /* Initialize with default handler to read all DisCo properties */ | |
796 | sdw_master_read_prop(bus); | |
797 | ||
798 | /* BIOS is not giving some values correctly. So, lets override them */ | |
799 | bus->prop.num_freq = 1; | |
4ac5627a PLB |
800 | bus->prop.freq = devm_kcalloc(bus->dev, bus->prop.num_freq, |
801 | sizeof(*bus->prop.freq), GFP_KERNEL); | |
71bb8a1b VK |
802 | if (!bus->prop.freq) |
803 | return -ENOMEM; | |
804 | ||
805 | bus->prop.freq[0] = bus->prop.max_freq; | |
806 | bus->prop.err_threshold = 5; | |
807 | ||
808 | return 0; | |
809 | } | |
810 | ||
c91605f4 SN |
811 | static struct sdw_master_ops sdw_intel_ops = { |
812 | .read_prop = sdw_master_read_prop, | |
813 | .xfer_msg = cdns_xfer_msg, | |
814 | .xfer_msg_defer = cdns_xfer_msg_defer, | |
815 | .reset_page_addr = cdns_reset_page_addr, | |
07abeff1 | 816 | .set_bus_conf = cdns_bus_conf, |
30246e2d SN |
817 | .pre_bank_switch = intel_pre_bank_switch, |
818 | .post_bank_switch = intel_post_bank_switch, | |
c91605f4 SN |
819 | }; |
820 | ||
71bb8a1b VK |
821 | /* |
822 | * probe and init | |
823 | */ | |
824 | static int intel_probe(struct platform_device *pdev) | |
825 | { | |
37a2d22b | 826 | struct sdw_cdns_stream_config config; |
71bb8a1b VK |
827 | struct sdw_intel *sdw; |
828 | int ret; | |
829 | ||
830 | sdw = devm_kzalloc(&pdev->dev, sizeof(*sdw), GFP_KERNEL); | |
831 | if (!sdw) | |
832 | return -ENOMEM; | |
833 | ||
834 | sdw->instance = pdev->id; | |
835 | sdw->res = dev_get_platdata(&pdev->dev); | |
836 | sdw->cdns.dev = &pdev->dev; | |
837 | sdw->cdns.registers = sdw->res->registers; | |
838 | sdw->cdns.instance = sdw->instance; | |
839 | sdw->cdns.msg_count = 0; | |
840 | sdw->cdns.bus.dev = &pdev->dev; | |
841 | sdw->cdns.bus.link_id = pdev->id; | |
842 | ||
843 | sdw_cdns_probe(&sdw->cdns); | |
844 | ||
845 | /* Set property read ops */ | |
c91605f4 SN |
846 | sdw_intel_ops.read_prop = intel_prop_read; |
847 | sdw->cdns.bus.ops = &sdw_intel_ops; | |
71bb8a1b VK |
848 | |
849 | platform_set_drvdata(pdev, sdw); | |
850 | ||
851 | ret = sdw_add_bus_master(&sdw->cdns.bus); | |
852 | if (ret) { | |
853 | dev_err(&pdev->dev, "sdw_add_bus_master fail: %d\n", ret); | |
854 | goto err_master_reg; | |
855 | } | |
856 | ||
857 | /* Initialize shim and controller */ | |
858 | intel_link_power_up(sdw); | |
859 | intel_shim_init(sdw); | |
860 | ||
861 | ret = sdw_cdns_init(&sdw->cdns); | |
862 | if (ret) | |
863 | goto err_init; | |
864 | ||
7094dc2b | 865 | ret = sdw_cdns_enable_interrupt(&sdw->cdns); |
37a2d22b VK |
866 | |
867 | /* Read the PDI config and initialize cadence PDI */ | |
868 | intel_pdi_init(sdw, &config); | |
869 | ret = sdw_cdns_pdi_init(&sdw->cdns, config); | |
71bb8a1b VK |
870 | if (ret) |
871 | goto err_init; | |
872 | ||
37a2d22b VK |
873 | intel_pdi_ch_update(sdw); |
874 | ||
71bb8a1b | 875 | /* Acquire IRQ */ |
d542bc9e PLB |
876 | ret = request_threaded_irq(sdw->res->irq, sdw_cdns_irq, sdw_cdns_thread, |
877 | IRQF_SHARED, KBUILD_MODNAME, &sdw->cdns); | |
71bb8a1b VK |
878 | if (ret < 0) { |
879 | dev_err(sdw->cdns.dev, "unable to grab IRQ %d, disabling device\n", | |
d542bc9e | 880 | sdw->res->irq); |
71bb8a1b VK |
881 | goto err_init; |
882 | } | |
883 | ||
c46302ec VK |
884 | /* Register DAIs */ |
885 | ret = intel_register_dai(sdw); | |
886 | if (ret) { | |
17ed5bef | 887 | dev_err(sdw->cdns.dev, "DAI registration failed: %d\n", ret); |
c46302ec VK |
888 | snd_soc_unregister_component(sdw->cdns.dev); |
889 | goto err_dai; | |
890 | } | |
891 | ||
71bb8a1b VK |
892 | return 0; |
893 | ||
c46302ec VK |
894 | err_dai: |
895 | free_irq(sdw->res->irq, sdw); | |
71bb8a1b VK |
896 | err_init: |
897 | sdw_delete_bus_master(&sdw->cdns.bus); | |
898 | err_master_reg: | |
899 | return ret; | |
900 | } | |
901 | ||
902 | static int intel_remove(struct platform_device *pdev) | |
903 | { | |
904 | struct sdw_intel *sdw; | |
905 | ||
906 | sdw = platform_get_drvdata(pdev); | |
907 | ||
908 | free_irq(sdw->res->irq, sdw); | |
c46302ec | 909 | snd_soc_unregister_component(sdw->cdns.dev); |
71bb8a1b VK |
910 | sdw_delete_bus_master(&sdw->cdns.bus); |
911 | ||
912 | return 0; | |
913 | } | |
914 | ||
915 | static struct platform_driver sdw_intel_drv = { | |
916 | .probe = intel_probe, | |
917 | .remove = intel_remove, | |
918 | .driver = { | |
919 | .name = "int-sdw", | |
920 | ||
921 | }, | |
922 | }; | |
923 | ||
924 | module_platform_driver(sdw_intel_drv); | |
925 | ||
926 | MODULE_LICENSE("Dual BSD/GPL"); | |
927 | MODULE_ALIAS("platform:int-sdw"); | |
928 | MODULE_DESCRIPTION("Intel Soundwire Master Driver"); |