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Commit | Line | Data |
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3a9cf8ef RK |
1 | /* |
2 | * ALSA SoC Synopsys I2S Audio Layer | |
3 | * | |
22a4adf2 | 4 | * sound/soc/dwc/designware_i2s.c |
3a9cf8ef RK |
5 | * |
6 | * Copyright (C) 2010 ST Microelectronics | |
9a302c32 | 7 | * Rajeev Kumar <rajeevkumar.linux@gmail.com> |
3a9cf8ef RK |
8 | * |
9 | * This file is licensed under the terms of the GNU General Public | |
10 | * License version 2. This program is licensed "as is" without any | |
11 | * warranty of any kind, whether express or implied. | |
12 | */ | |
13 | ||
14 | #include <linux/clk.h> | |
15 | #include <linux/device.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/io.h> | |
18 | #include <linux/interrupt.h> | |
19 | #include <linux/module.h> | |
20 | #include <linux/slab.h> | |
f4830312 | 21 | #include <linux/pm_runtime.h> |
3a9cf8ef RK |
22 | #include <sound/designware_i2s.h> |
23 | #include <sound/pcm.h> | |
24 | #include <sound/pcm_params.h> | |
25 | #include <sound/soc.h> | |
0d274544 | 26 | #include <sound/dmaengine_pcm.h> |
79361b2b | 27 | #include "local.h" |
3a9cf8ef | 28 | |
6b4a21b6 | 29 | static inline void i2s_write_reg(void __iomem *io_base, int reg, u32 val) |
3a9cf8ef RK |
30 | { |
31 | writel(val, io_base + reg); | |
32 | } | |
33 | ||
6b4a21b6 | 34 | static inline u32 i2s_read_reg(void __iomem *io_base, int reg) |
3a9cf8ef RK |
35 | { |
36 | return readl(io_base + reg); | |
37 | } | |
38 | ||
39 | static inline void i2s_disable_channels(struct dw_i2s_dev *dev, u32 stream) | |
40 | { | |
41 | u32 i = 0; | |
42 | ||
43 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
44 | for (i = 0; i < 4; i++) | |
45 | i2s_write_reg(dev->i2s_base, TER(i), 0); | |
46 | } else { | |
47 | for (i = 0; i < 4; i++) | |
48 | i2s_write_reg(dev->i2s_base, RER(i), 0); | |
49 | } | |
50 | } | |
51 | ||
52 | static inline void i2s_clear_irqs(struct dw_i2s_dev *dev, u32 stream) | |
53 | { | |
54 | u32 i = 0; | |
55 | ||
56 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
57 | for (i = 0; i < 4; i++) | |
4873867e | 58 | i2s_read_reg(dev->i2s_base, TOR(i)); |
3a9cf8ef RK |
59 | } else { |
60 | for (i = 0; i < 4; i++) | |
4873867e | 61 | i2s_read_reg(dev->i2s_base, ROR(i)); |
3a9cf8ef RK |
62 | } |
63 | } | |
64 | ||
b1d32feb JA |
65 | static inline void i2s_disable_irqs(struct dw_i2s_dev *dev, u32 stream, |
66 | int chan_nr) | |
3a9cf8ef | 67 | { |
924eb475 | 68 | u32 i, irq; |
3a9cf8ef | 69 | |
b1d32feb JA |
70 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { |
71 | for (i = 0; i < (chan_nr / 2); i++) { | |
72 | irq = i2s_read_reg(dev->i2s_base, IMR(i)); | |
73 | i2s_write_reg(dev->i2s_base, IMR(i), irq | 0x30); | |
74 | } | |
75 | } else { | |
76 | for (i = 0; i < (chan_nr / 2); i++) { | |
77 | irq = i2s_read_reg(dev->i2s_base, IMR(i)); | |
78 | i2s_write_reg(dev->i2s_base, IMR(i), irq | 0x03); | |
79 | } | |
80 | } | |
81 | } | |
82 | ||
83 | static inline void i2s_enable_irqs(struct dw_i2s_dev *dev, u32 stream, | |
84 | int chan_nr) | |
85 | { | |
86 | u32 i, irq; | |
87 | ||
88 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
89 | for (i = 0; i < (chan_nr / 2); i++) { | |
924eb475 | 90 | irq = i2s_read_reg(dev->i2s_base, IMR(i)); |
91 | i2s_write_reg(dev->i2s_base, IMR(i), irq & ~0x30); | |
92 | } | |
924eb475 | 93 | } else { |
b1d32feb | 94 | for (i = 0; i < (chan_nr / 2); i++) { |
924eb475 | 95 | irq = i2s_read_reg(dev->i2s_base, IMR(i)); |
96 | i2s_write_reg(dev->i2s_base, IMR(i), irq & ~0x03); | |
97 | } | |
924eb475 | 98 | } |
b1d32feb JA |
99 | } |
100 | ||
79361b2b JA |
101 | static irqreturn_t i2s_irq_handler(int irq, void *dev_id) |
102 | { | |
103 | struct dw_i2s_dev *dev = dev_id; | |
104 | bool irq_valid = false; | |
105 | u32 isr[4]; | |
106 | int i; | |
107 | ||
108 | for (i = 0; i < 4; i++) | |
109 | isr[i] = i2s_read_reg(dev->i2s_base, ISR(i)); | |
110 | ||
111 | i2s_clear_irqs(dev, SNDRV_PCM_STREAM_PLAYBACK); | |
112 | i2s_clear_irqs(dev, SNDRV_PCM_STREAM_CAPTURE); | |
113 | ||
114 | for (i = 0; i < 4; i++) { | |
115 | /* | |
116 | * Check if TX fifo is empty. If empty fill FIFO with samples | |
117 | * NOTE: Only two channels supported | |
118 | */ | |
119 | if ((isr[i] & ISR_TXFE) && (i == 0) && dev->use_pio) { | |
120 | dw_pcm_push_tx(dev); | |
121 | irq_valid = true; | |
122 | } | |
123 | ||
e2f748e0 JA |
124 | /* |
125 | * Data available. Retrieve samples from FIFO | |
126 | * NOTE: Only two channels supported | |
127 | */ | |
128 | if ((isr[i] & ISR_RXDA) && (i == 0) && dev->use_pio) { | |
129 | dw_pcm_pop_rx(dev); | |
79361b2b | 130 | irq_valid = true; |
e2f748e0 | 131 | } |
79361b2b JA |
132 | |
133 | /* Error Handling: TX */ | |
134 | if (isr[i] & ISR_TXFO) { | |
135 | dev_err(dev->dev, "TX overrun (ch_id=%d)\n", i); | |
136 | irq_valid = true; | |
137 | } | |
138 | ||
139 | /* Error Handling: TX */ | |
140 | if (isr[i] & ISR_RXFO) { | |
141 | dev_err(dev->dev, "RX overrun (ch_id=%d)\n", i); | |
142 | irq_valid = true; | |
143 | } | |
144 | } | |
145 | ||
146 | if (irq_valid) | |
147 | return IRQ_HANDLED; | |
148 | else | |
149 | return IRQ_NONE; | |
150 | } | |
151 | ||
b1d32feb JA |
152 | static void i2s_start(struct dw_i2s_dev *dev, |
153 | struct snd_pcm_substream *substream) | |
154 | { | |
155 | struct i2s_clk_config_data *config = &dev->config; | |
156 | ||
157 | i2s_write_reg(dev->i2s_base, IER, 1); | |
158 | i2s_enable_irqs(dev, substream->stream, config->chan_nr); | |
159 | ||
160 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
161 | i2s_write_reg(dev->i2s_base, ITER, 1); | |
162 | else | |
163 | i2s_write_reg(dev->i2s_base, IRER, 1); | |
3a9cf8ef RK |
164 | |
165 | i2s_write_reg(dev->i2s_base, CER, 1); | |
166 | } | |
167 | ||
168 | static void i2s_stop(struct dw_i2s_dev *dev, | |
169 | struct snd_pcm_substream *substream) | |
170 | { | |
3a9cf8ef RK |
171 | |
172 | i2s_clear_irqs(dev, substream->stream); | |
b1d32feb | 173 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
3a9cf8ef | 174 | i2s_write_reg(dev->i2s_base, ITER, 0); |
b1d32feb | 175 | else |
3a9cf8ef RK |
176 | i2s_write_reg(dev->i2s_base, IRER, 0); |
177 | ||
b1d32feb | 178 | i2s_disable_irqs(dev, substream->stream, 8); |
3a9cf8ef RK |
179 | |
180 | if (!dev->active) { | |
181 | i2s_write_reg(dev->i2s_base, CER, 0); | |
182 | i2s_write_reg(dev->i2s_base, IER, 0); | |
183 | } | |
184 | } | |
185 | ||
186 | static int dw_i2s_startup(struct snd_pcm_substream *substream, | |
187 | struct snd_soc_dai *cpu_dai) | |
188 | { | |
189 | struct dw_i2s_dev *dev = snd_soc_dai_get_drvdata(cpu_dai); | |
0d274544 | 190 | union dw_i2s_snd_dma_data *dma_data = NULL; |
3a9cf8ef RK |
191 | |
192 | if (!(dev->capability & DWC_I2S_RECORD) && | |
193 | (substream->stream == SNDRV_PCM_STREAM_CAPTURE)) | |
194 | return -EINVAL; | |
195 | ||
196 | if (!(dev->capability & DWC_I2S_PLAY) && | |
197 | (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)) | |
198 | return -EINVAL; | |
199 | ||
200 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
201 | dma_data = &dev->play_dma_data; | |
202 | else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) | |
203 | dma_data = &dev->capture_dma_data; | |
204 | ||
205 | snd_soc_dai_set_dma_data(cpu_dai, substream, (void *)dma_data); | |
206 | ||
207 | return 0; | |
208 | } | |
209 | ||
0032e9db MSB |
210 | static void dw_i2s_config(struct dw_i2s_dev *dev, int stream) |
211 | { | |
b1d32feb | 212 | u32 ch_reg; |
0032e9db MSB |
213 | struct i2s_clk_config_data *config = &dev->config; |
214 | ||
215 | ||
216 | i2s_disable_channels(dev, stream); | |
217 | ||
218 | for (ch_reg = 0; ch_reg < (config->chan_nr / 2); ch_reg++) { | |
219 | if (stream == SNDRV_PCM_STREAM_PLAYBACK) { | |
220 | i2s_write_reg(dev->i2s_base, TCR(ch_reg), | |
221 | dev->xfer_resolution); | |
3fafd14d JA |
222 | i2s_write_reg(dev->i2s_base, TFCR(ch_reg), |
223 | dev->fifo_th - 1); | |
0032e9db MSB |
224 | i2s_write_reg(dev->i2s_base, TER(ch_reg), 1); |
225 | } else { | |
226 | i2s_write_reg(dev->i2s_base, RCR(ch_reg), | |
227 | dev->xfer_resolution); | |
3fafd14d JA |
228 | i2s_write_reg(dev->i2s_base, RFCR(ch_reg), |
229 | dev->fifo_th - 1); | |
0032e9db MSB |
230 | i2s_write_reg(dev->i2s_base, RER(ch_reg), 1); |
231 | } | |
232 | ||
233 | } | |
234 | } | |
235 | ||
3a9cf8ef RK |
236 | static int dw_i2s_hw_params(struct snd_pcm_substream *substream, |
237 | struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) | |
238 | { | |
239 | struct dw_i2s_dev *dev = snd_soc_dai_get_drvdata(dai); | |
240 | struct i2s_clk_config_data *config = &dev->config; | |
3a9cf8ef RK |
241 | int ret; |
242 | ||
243 | switch (params_format(params)) { | |
244 | case SNDRV_PCM_FORMAT_S16_LE: | |
245 | config->data_width = 16; | |
0032e9db MSB |
246 | dev->ccr = 0x00; |
247 | dev->xfer_resolution = 0x02; | |
3a9cf8ef RK |
248 | break; |
249 | ||
250 | case SNDRV_PCM_FORMAT_S24_LE: | |
251 | config->data_width = 24; | |
0032e9db MSB |
252 | dev->ccr = 0x08; |
253 | dev->xfer_resolution = 0x04; | |
3a9cf8ef RK |
254 | break; |
255 | ||
256 | case SNDRV_PCM_FORMAT_S32_LE: | |
257 | config->data_width = 32; | |
0032e9db MSB |
258 | dev->ccr = 0x10; |
259 | dev->xfer_resolution = 0x05; | |
3a9cf8ef RK |
260 | break; |
261 | ||
262 | default: | |
57072ae1 | 263 | dev_err(dev->dev, "designware-i2s: unsupported PCM fmt"); |
3a9cf8ef RK |
264 | return -EINVAL; |
265 | } | |
266 | ||
267 | config->chan_nr = params_channels(params); | |
268 | ||
269 | switch (config->chan_nr) { | |
270 | case EIGHT_CHANNEL_SUPPORT: | |
3a9cf8ef | 271 | case SIX_CHANNEL_SUPPORT: |
3a9cf8ef | 272 | case FOUR_CHANNEL_SUPPORT: |
3a9cf8ef | 273 | case TWO_CHANNEL_SUPPORT: |
3a9cf8ef RK |
274 | break; |
275 | default: | |
276 | dev_err(dev->dev, "channel not supported\n"); | |
0099d24c | 277 | return -EINVAL; |
3a9cf8ef RK |
278 | } |
279 | ||
0032e9db | 280 | dw_i2s_config(dev, substream->stream); |
3a9cf8ef | 281 | |
0032e9db | 282 | i2s_write_reg(dev->i2s_base, CCR, dev->ccr); |
3a9cf8ef RK |
283 | |
284 | config->sample_rate = params_rate(params); | |
285 | ||
1d957d86 MSB |
286 | if (dev->capability & DW_I2S_MASTER) { |
287 | if (dev->i2s_clk_cfg) { | |
288 | ret = dev->i2s_clk_cfg(config); | |
289 | if (ret < 0) { | |
290 | dev_err(dev->dev, "runtime audio clk config fail\n"); | |
291 | return ret; | |
292 | } | |
293 | } else { | |
294 | u32 bitclk = config->sample_rate * | |
295 | config->data_width * 2; | |
296 | ||
297 | ret = clk_set_rate(dev->clk, bitclk); | |
298 | if (ret) { | |
299 | dev_err(dev->dev, "Can't set I2S clock rate: %d\n", | |
300 | ret); | |
301 | return ret; | |
302 | } | |
0d274544 | 303 | } |
3a9cf8ef | 304 | } |
3a9cf8ef RK |
305 | return 0; |
306 | } | |
307 | ||
308 | static void dw_i2s_shutdown(struct snd_pcm_substream *substream, | |
309 | struct snd_soc_dai *dai) | |
310 | { | |
311 | snd_soc_dai_set_dma_data(dai, substream, NULL); | |
312 | } | |
313 | ||
3475c3d0 AJ |
314 | static int dw_i2s_prepare(struct snd_pcm_substream *substream, |
315 | struct snd_soc_dai *dai) | |
316 | { | |
317 | struct dw_i2s_dev *dev = snd_soc_dai_get_drvdata(dai); | |
318 | ||
319 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
320 | i2s_write_reg(dev->i2s_base, TXFFR, 1); | |
321 | else | |
322 | i2s_write_reg(dev->i2s_base, RXFFR, 1); | |
323 | ||
324 | return 0; | |
325 | } | |
326 | ||
3a9cf8ef RK |
327 | static int dw_i2s_trigger(struct snd_pcm_substream *substream, |
328 | int cmd, struct snd_soc_dai *dai) | |
329 | { | |
330 | struct dw_i2s_dev *dev = snd_soc_dai_get_drvdata(dai); | |
331 | int ret = 0; | |
332 | ||
333 | switch (cmd) { | |
334 | case SNDRV_PCM_TRIGGER_START: | |
335 | case SNDRV_PCM_TRIGGER_RESUME: | |
336 | case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: | |
337 | dev->active++; | |
338 | i2s_start(dev, substream); | |
339 | break; | |
340 | ||
341 | case SNDRV_PCM_TRIGGER_STOP: | |
342 | case SNDRV_PCM_TRIGGER_SUSPEND: | |
343 | case SNDRV_PCM_TRIGGER_PAUSE_PUSH: | |
344 | dev->active--; | |
345 | i2s_stop(dev, substream); | |
346 | break; | |
347 | default: | |
348 | ret = -EINVAL; | |
349 | break; | |
350 | } | |
351 | return ret; | |
352 | } | |
353 | ||
ab57b8e9 MSB |
354 | static int dw_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt) |
355 | { | |
356 | struct dw_i2s_dev *dev = snd_soc_dai_get_drvdata(cpu_dai); | |
357 | int ret = 0; | |
358 | ||
359 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
360 | case SND_SOC_DAIFMT_CBM_CFM: | |
361 | if (dev->capability & DW_I2S_SLAVE) | |
362 | ret = 0; | |
363 | else | |
364 | ret = -EINVAL; | |
365 | break; | |
366 | case SND_SOC_DAIFMT_CBS_CFS: | |
367 | if (dev->capability & DW_I2S_MASTER) | |
368 | ret = 0; | |
369 | else | |
370 | ret = -EINVAL; | |
371 | break; | |
372 | case SND_SOC_DAIFMT_CBM_CFS: | |
373 | case SND_SOC_DAIFMT_CBS_CFM: | |
374 | ret = -EINVAL; | |
375 | break; | |
376 | default: | |
377 | dev_dbg(dev->dev, "dwc : Invalid master/slave format\n"); | |
378 | ret = -EINVAL; | |
379 | break; | |
380 | } | |
381 | return ret; | |
382 | } | |
383 | ||
3a9cf8ef RK |
384 | static struct snd_soc_dai_ops dw_i2s_dai_ops = { |
385 | .startup = dw_i2s_startup, | |
386 | .shutdown = dw_i2s_shutdown, | |
387 | .hw_params = dw_i2s_hw_params, | |
3475c3d0 | 388 | .prepare = dw_i2s_prepare, |
3a9cf8ef | 389 | .trigger = dw_i2s_trigger, |
ab57b8e9 | 390 | .set_fmt = dw_i2s_set_fmt, |
3a9cf8ef RK |
391 | }; |
392 | ||
92eaa328 KM |
393 | static const struct snd_soc_component_driver dw_i2s_component = { |
394 | .name = "dw-i2s", | |
395 | }; | |
396 | ||
3a9cf8ef | 397 | #ifdef CONFIG_PM |
f4830312 MSB |
398 | static int dw_i2s_runtime_suspend(struct device *dev) |
399 | { | |
400 | struct dw_i2s_dev *dw_dev = dev_get_drvdata(dev); | |
401 | ||
402 | if (dw_dev->capability & DW_I2S_MASTER) | |
403 | clk_disable(dw_dev->clk); | |
404 | return 0; | |
405 | } | |
406 | ||
407 | static int dw_i2s_runtime_resume(struct device *dev) | |
408 | { | |
409 | struct dw_i2s_dev *dw_dev = dev_get_drvdata(dev); | |
410 | ||
411 | if (dw_dev->capability & DW_I2S_MASTER) | |
412 | clk_enable(dw_dev->clk); | |
413 | return 0; | |
414 | } | |
3a9cf8ef RK |
415 | |
416 | static int dw_i2s_suspend(struct snd_soc_dai *dai) | |
417 | { | |
418 | struct dw_i2s_dev *dev = snd_soc_dai_get_drvdata(dai); | |
419 | ||
1d957d86 MSB |
420 | if (dev->capability & DW_I2S_MASTER) |
421 | clk_disable(dev->clk); | |
3a9cf8ef RK |
422 | return 0; |
423 | } | |
424 | ||
425 | static int dw_i2s_resume(struct snd_soc_dai *dai) | |
426 | { | |
427 | struct dw_i2s_dev *dev = snd_soc_dai_get_drvdata(dai); | |
428 | ||
1d957d86 MSB |
429 | if (dev->capability & DW_I2S_MASTER) |
430 | clk_enable(dev->clk); | |
0032e9db MSB |
431 | |
432 | if (dai->playback_active) | |
433 | dw_i2s_config(dev, SNDRV_PCM_STREAM_PLAYBACK); | |
434 | if (dai->capture_active) | |
435 | dw_i2s_config(dev, SNDRV_PCM_STREAM_CAPTURE); | |
3a9cf8ef RK |
436 | return 0; |
437 | } | |
438 | ||
439 | #else | |
440 | #define dw_i2s_suspend NULL | |
441 | #define dw_i2s_resume NULL | |
442 | #endif | |
443 | ||
b226efe5 AJ |
444 | /* |
445 | * The following tables allow a direct lookup of various parameters | |
446 | * defined in the I2S block's configuration in terms of sound system | |
447 | * parameters. Each table is sized to the number of entries possible | |
448 | * according to the number of configuration bits describing an I2S | |
449 | * block parameter. | |
450 | */ | |
451 | ||
0d274544 AJ |
452 | /* Maximum bit resolution of a channel - not uniformly spaced */ |
453 | static const u32 fifo_width[COMP_MAX_WORDSIZE] = { | |
454 | 12, 16, 20, 24, 32, 0, 0, 0 | |
455 | }; | |
456 | ||
b226efe5 AJ |
457 | /* Width of (DMA) bus */ |
458 | static const u32 bus_widths[COMP_MAX_DATA_WIDTH] = { | |
459 | DMA_SLAVE_BUSWIDTH_1_BYTE, | |
460 | DMA_SLAVE_BUSWIDTH_2_BYTES, | |
461 | DMA_SLAVE_BUSWIDTH_4_BYTES, | |
462 | DMA_SLAVE_BUSWIDTH_UNDEFINED | |
463 | }; | |
464 | ||
465 | /* PCM format to support channel resolution */ | |
466 | static const u32 formats[COMP_MAX_WORDSIZE] = { | |
467 | SNDRV_PCM_FMTBIT_S16_LE, | |
468 | SNDRV_PCM_FMTBIT_S16_LE, | |
469 | SNDRV_PCM_FMTBIT_S24_LE, | |
470 | SNDRV_PCM_FMTBIT_S24_LE, | |
471 | SNDRV_PCM_FMTBIT_S32_LE, | |
472 | 0, | |
473 | 0, | |
474 | 0 | |
475 | }; | |
476 | ||
0d274544 | 477 | static int dw_configure_dai(struct dw_i2s_dev *dev, |
afa8603c | 478 | struct snd_soc_dai_driver *dw_i2s_dai, |
0d274544 | 479 | unsigned int rates) |
afa8603c | 480 | { |
b226efe5 AJ |
481 | /* |
482 | * Read component parameter registers to extract | |
483 | * the I2S block's configuration. | |
484 | */ | |
e164835a MSB |
485 | u32 comp1 = i2s_read_reg(dev->i2s_base, dev->i2s_reg_comp1); |
486 | u32 comp2 = i2s_read_reg(dev->i2s_base, dev->i2s_reg_comp2); | |
3fafd14d | 487 | u32 fifo_depth = 1 << (1 + COMP1_FIFO_DEPTH_GLOBAL(comp1)); |
0d274544 | 488 | u32 idx; |
afa8603c | 489 | |
a242cac1 MSB |
490 | if (dev->capability & DWC_I2S_RECORD && |
491 | dev->quirks & DW_I2S_QUIRK_COMP_PARAM1) | |
492 | comp1 = comp1 & ~BIT(5); | |
493 | ||
b226efe5 | 494 | if (COMP1_TX_ENABLED(comp1)) { |
afa8603c | 495 | dev_dbg(dev->dev, " designware: play supported\n"); |
b226efe5 AJ |
496 | idx = COMP1_TX_WORDSIZE_0(comp1); |
497 | if (WARN_ON(idx >= ARRAY_SIZE(formats))) | |
498 | return -EINVAL; | |
286345ee VM |
499 | if (dev->quirks & DW_I2S_QUIRK_16BIT_IDX_OVERRIDE) |
500 | idx = 1; | |
afa8603c | 501 | dw_i2s_dai->playback.channels_min = MIN_CHANNEL_NUM; |
b226efe5 AJ |
502 | dw_i2s_dai->playback.channels_max = |
503 | 1 << (COMP1_TX_CHANNELS(comp1) + 1); | |
504 | dw_i2s_dai->playback.formats = formats[idx]; | |
0d274544 | 505 | dw_i2s_dai->playback.rates = rates; |
afa8603c AJ |
506 | } |
507 | ||
b226efe5 | 508 | if (COMP1_RX_ENABLED(comp1)) { |
afa8603c | 509 | dev_dbg(dev->dev, "designware: record supported\n"); |
b226efe5 AJ |
510 | idx = COMP2_RX_WORDSIZE_0(comp2); |
511 | if (WARN_ON(idx >= ARRAY_SIZE(formats))) | |
512 | return -EINVAL; | |
286345ee VM |
513 | if (dev->quirks & DW_I2S_QUIRK_16BIT_IDX_OVERRIDE) |
514 | idx = 1; | |
afa8603c | 515 | dw_i2s_dai->capture.channels_min = MIN_CHANNEL_NUM; |
b226efe5 AJ |
516 | dw_i2s_dai->capture.channels_max = |
517 | 1 << (COMP1_RX_CHANNELS(comp1) + 1); | |
518 | dw_i2s_dai->capture.formats = formats[idx]; | |
0d274544 AJ |
519 | dw_i2s_dai->capture.rates = rates; |
520 | } | |
521 | ||
1d957d86 MSB |
522 | if (COMP1_MODE_EN(comp1)) { |
523 | dev_dbg(dev->dev, "designware: i2s master mode supported\n"); | |
524 | dev->capability |= DW_I2S_MASTER; | |
525 | } else { | |
526 | dev_dbg(dev->dev, "designware: i2s slave mode supported\n"); | |
527 | dev->capability |= DW_I2S_SLAVE; | |
528 | } | |
529 | ||
3fafd14d | 530 | dev->fifo_th = fifo_depth / 2; |
0d274544 AJ |
531 | return 0; |
532 | } | |
533 | ||
534 | static int dw_configure_dai_by_pd(struct dw_i2s_dev *dev, | |
535 | struct snd_soc_dai_driver *dw_i2s_dai, | |
536 | struct resource *res, | |
537 | const struct i2s_platform_data *pdata) | |
538 | { | |
e164835a | 539 | u32 comp1 = i2s_read_reg(dev->i2s_base, dev->i2s_reg_comp1); |
0d274544 AJ |
540 | u32 idx = COMP1_APB_DATA_WIDTH(comp1); |
541 | int ret; | |
542 | ||
543 | if (WARN_ON(idx >= ARRAY_SIZE(bus_widths))) | |
544 | return -EINVAL; | |
545 | ||
546 | ret = dw_configure_dai(dev, dw_i2s_dai, pdata->snd_rates); | |
547 | if (ret < 0) | |
548 | return ret; | |
549 | ||
286345ee VM |
550 | if (dev->quirks & DW_I2S_QUIRK_16BIT_IDX_OVERRIDE) |
551 | idx = 1; | |
0d274544 AJ |
552 | /* Set DMA slaves info */ |
553 | dev->play_dma_data.pd.data = pdata->play_dma_data; | |
554 | dev->capture_dma_data.pd.data = pdata->capture_dma_data; | |
555 | dev->play_dma_data.pd.addr = res->start + I2S_TXDMA; | |
556 | dev->capture_dma_data.pd.addr = res->start + I2S_RXDMA; | |
557 | dev->play_dma_data.pd.max_burst = 16; | |
558 | dev->capture_dma_data.pd.max_burst = 16; | |
559 | dev->play_dma_data.pd.addr_width = bus_widths[idx]; | |
560 | dev->capture_dma_data.pd.addr_width = bus_widths[idx]; | |
561 | dev->play_dma_data.pd.filter = pdata->filter; | |
562 | dev->capture_dma_data.pd.filter = pdata->filter; | |
563 | ||
564 | return 0; | |
565 | } | |
566 | ||
567 | static int dw_configure_dai_by_dt(struct dw_i2s_dev *dev, | |
568 | struct snd_soc_dai_driver *dw_i2s_dai, | |
569 | struct resource *res) | |
570 | { | |
571 | u32 comp1 = i2s_read_reg(dev->i2s_base, I2S_COMP_PARAM_1); | |
572 | u32 comp2 = i2s_read_reg(dev->i2s_base, I2S_COMP_PARAM_2); | |
573 | u32 fifo_depth = 1 << (1 + COMP1_FIFO_DEPTH_GLOBAL(comp1)); | |
574 | u32 idx = COMP1_APB_DATA_WIDTH(comp1); | |
575 | u32 idx2; | |
576 | int ret; | |
577 | ||
578 | if (WARN_ON(idx >= ARRAY_SIZE(bus_widths))) | |
579 | return -EINVAL; | |
580 | ||
581 | ret = dw_configure_dai(dev, dw_i2s_dai, SNDRV_PCM_RATE_8000_192000); | |
582 | if (ret < 0) | |
583 | return ret; | |
584 | ||
585 | if (COMP1_TX_ENABLED(comp1)) { | |
586 | idx2 = COMP1_TX_WORDSIZE_0(comp1); | |
587 | ||
588 | dev->capability |= DWC_I2S_PLAY; | |
589 | dev->play_dma_data.dt.addr = res->start + I2S_TXDMA; | |
590 | dev->play_dma_data.dt.addr_width = bus_widths[idx]; | |
0d274544 AJ |
591 | dev->play_dma_data.dt.fifo_size = fifo_depth * |
592 | (fifo_width[idx2]) >> 8; | |
593 | dev->play_dma_data.dt.maxburst = 16; | |
594 | } | |
595 | if (COMP1_RX_ENABLED(comp1)) { | |
596 | idx2 = COMP2_RX_WORDSIZE_0(comp2); | |
597 | ||
598 | dev->capability |= DWC_I2S_RECORD; | |
599 | dev->capture_dma_data.dt.addr = res->start + I2S_RXDMA; | |
600 | dev->capture_dma_data.dt.addr_width = bus_widths[idx]; | |
0d274544 AJ |
601 | dev->capture_dma_data.dt.fifo_size = fifo_depth * |
602 | (fifo_width[idx2] >> 8); | |
603 | dev->capture_dma_data.dt.maxburst = 16; | |
afa8603c | 604 | } |
b226efe5 AJ |
605 | |
606 | return 0; | |
0d274544 | 607 | |
afa8603c AJ |
608 | } |
609 | ||
3a9cf8ef RK |
610 | static int dw_i2s_probe(struct platform_device *pdev) |
611 | { | |
612 | const struct i2s_platform_data *pdata = pdev->dev.platform_data; | |
613 | struct dw_i2s_dev *dev; | |
614 | struct resource *res; | |
79361b2b | 615 | int ret, irq; |
3a9cf8ef | 616 | struct snd_soc_dai_driver *dw_i2s_dai; |
1d957d86 | 617 | const char *clk_id; |
3a9cf8ef | 618 | |
3a9cf8ef RK |
619 | dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); |
620 | if (!dev) { | |
621 | dev_warn(&pdev->dev, "kzalloc fail\n"); | |
622 | return -ENOMEM; | |
623 | } | |
624 | ||
b163be4c | 625 | dw_i2s_dai = devm_kzalloc(&pdev->dev, sizeof(*dw_i2s_dai), GFP_KERNEL); |
be33465e | 626 | if (!dw_i2s_dai) |
3a9cf8ef | 627 | return -ENOMEM; |
3a9cf8ef | 628 | |
b163be4c AJ |
629 | dw_i2s_dai->ops = &dw_i2s_dai_ops; |
630 | dw_i2s_dai->suspend = dw_i2s_suspend; | |
631 | dw_i2s_dai->resume = dw_i2s_resume; | |
632 | ||
633 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
b163be4c | 634 | dev->i2s_base = devm_ioremap_resource(&pdev->dev, res); |
be33465e | 635 | if (IS_ERR(dev->i2s_base)) |
b163be4c | 636 | return PTR_ERR(dev->i2s_base); |
b163be4c | 637 | |
afa8603c | 638 | dev->dev = &pdev->dev; |
1d957d86 | 639 | |
79361b2b JA |
640 | irq = platform_get_irq(pdev, 0); |
641 | if (irq >= 0) { | |
642 | ret = devm_request_irq(&pdev->dev, irq, i2s_irq_handler, 0, | |
643 | pdev->name, dev); | |
644 | if (ret < 0) { | |
645 | dev_err(&pdev->dev, "failed to request irq\n"); | |
646 | return ret; | |
647 | } | |
648 | } | |
649 | ||
d2f916aa JMT |
650 | dev->i2s_reg_comp1 = I2S_COMP_PARAM_1; |
651 | dev->i2s_reg_comp2 = I2S_COMP_PARAM_2; | |
0d274544 | 652 | if (pdata) { |
1d957d86 MSB |
653 | dev->capability = pdata->cap; |
654 | clk_id = NULL; | |
e164835a MSB |
655 | dev->quirks = pdata->quirks; |
656 | if (dev->quirks & DW_I2S_QUIRK_COMP_REG_OFFSET) { | |
657 | dev->i2s_reg_comp1 = pdata->i2s_reg_comp1; | |
658 | dev->i2s_reg_comp2 = pdata->i2s_reg_comp2; | |
e164835a | 659 | } |
0d274544 | 660 | ret = dw_configure_dai_by_pd(dev, dw_i2s_dai, res, pdata); |
1d957d86 MSB |
661 | } else { |
662 | clk_id = "i2sclk"; | |
663 | ret = dw_configure_dai_by_dt(dev, dw_i2s_dai, res); | |
664 | } | |
665 | if (ret < 0) | |
666 | return ret; | |
0d274544 | 667 | |
1d957d86 MSB |
668 | if (dev->capability & DW_I2S_MASTER) { |
669 | if (pdata) { | |
670 | dev->i2s_clk_cfg = pdata->i2s_clk_cfg; | |
671 | if (!dev->i2s_clk_cfg) { | |
672 | dev_err(&pdev->dev, "no clock configure method\n"); | |
673 | return -ENODEV; | |
674 | } | |
0d274544 | 675 | } |
1d957d86 | 676 | dev->clk = devm_clk_get(&pdev->dev, clk_id); |
3a9cf8ef | 677 | |
1d957d86 MSB |
678 | if (IS_ERR(dev->clk)) |
679 | return PTR_ERR(dev->clk); | |
680 | ||
681 | ret = clk_prepare_enable(dev->clk); | |
0d274544 AJ |
682 | if (ret < 0) |
683 | return ret; | |
0d274544 | 684 | } |
3a9cf8ef | 685 | |
3a9cf8ef | 686 | dev_set_drvdata(&pdev->dev, dev); |
758c2deb | 687 | ret = devm_snd_soc_register_component(&pdev->dev, &dw_i2s_component, |
92eaa328 | 688 | dw_i2s_dai, 1); |
3a9cf8ef RK |
689 | if (ret != 0) { |
690 | dev_err(&pdev->dev, "not able to register dai\n"); | |
e925a6b1 | 691 | goto err_clk_disable; |
3a9cf8ef RK |
692 | } |
693 | ||
0d274544 | 694 | if (!pdata) { |
6fce983f | 695 | if (irq >= 0) { |
79361b2b | 696 | ret = dw_pcm_register(pdev); |
6fce983f JA |
697 | dev->use_pio = true; |
698 | } else { | |
699 | ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, | |
700 | 0); | |
701 | dev->use_pio = false; | |
702 | } | |
703 | ||
704 | if (ret) { | |
705 | dev_err(&pdev->dev, "could not register pcm: %d\n", | |
79361b2b | 706 | ret); |
6fce983f | 707 | goto err_clk_disable; |
0d274544 AJ |
708 | } |
709 | } | |
79361b2b | 710 | |
f4830312 | 711 | pm_runtime_enable(&pdev->dev); |
3a9cf8ef RK |
712 | return 0; |
713 | ||
3a9cf8ef | 714 | err_clk_disable: |
1d957d86 MSB |
715 | if (dev->capability & DW_I2S_MASTER) |
716 | clk_disable_unprepare(dev->clk); | |
3a9cf8ef RK |
717 | return ret; |
718 | } | |
719 | ||
720 | static int dw_i2s_remove(struct platform_device *pdev) | |
721 | { | |
722 | struct dw_i2s_dev *dev = dev_get_drvdata(&pdev->dev); | |
723 | ||
1d957d86 MSB |
724 | if (dev->capability & DW_I2S_MASTER) |
725 | clk_disable_unprepare(dev->clk); | |
3a9cf8ef | 726 | |
f4830312 | 727 | pm_runtime_disable(&pdev->dev); |
3a9cf8ef RK |
728 | return 0; |
729 | } | |
730 | ||
0d274544 AJ |
731 | #ifdef CONFIG_OF |
732 | static const struct of_device_id dw_i2s_of_match[] = { | |
733 | { .compatible = "snps,designware-i2s", }, | |
734 | {}, | |
735 | }; | |
736 | ||
737 | MODULE_DEVICE_TABLE(of, dw_i2s_of_match); | |
738 | #endif | |
739 | ||
f4830312 MSB |
740 | static const struct dev_pm_ops dwc_pm_ops = { |
741 | SET_RUNTIME_PM_OPS(dw_i2s_runtime_suspend, dw_i2s_runtime_resume, NULL) | |
742 | }; | |
743 | ||
3a9cf8ef RK |
744 | static struct platform_driver dw_i2s_driver = { |
745 | .probe = dw_i2s_probe, | |
746 | .remove = dw_i2s_remove, | |
747 | .driver = { | |
748 | .name = "designware-i2s", | |
0d274544 | 749 | .of_match_table = of_match_ptr(dw_i2s_of_match), |
f4830312 | 750 | .pm = &dwc_pm_ops, |
3a9cf8ef RK |
751 | }, |
752 | }; | |
753 | ||
754 | module_platform_driver(dw_i2s_driver); | |
755 | ||
b794dbcd | 756 | MODULE_AUTHOR("Rajeev Kumar <rajeevkumar.linux@gmail.com>"); |
3a9cf8ef RK |
757 | MODULE_DESCRIPTION("DESIGNWARE I2S SoC Interface"); |
758 | MODULE_LICENSE("GPL"); | |
759 | MODULE_ALIAS("platform:designware_i2s"); |