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29#include <linux/init.h>
30#include <linux/module.h>
31#include <linux/device.h>
32#include <linux/delay.h>
33#include <sound/core.h>
34#include <sound/pcm.h>
35#include <sound/pcm_params.h>
36#include <sound/initval.h>
37#include <sound/soc.h>
38
39#include <asm/irq.h>
40#include <asm/portmux.h>
41#include <linux/mutex.h>
42#include <linux/gpio.h>
43
44#include "bf5xx-sport.h"
45#include "bf5xx-i2s-pcm.h"
46
47struct bf5xx_i2s_port {
48 u16 tcr1;
49 u16 rcr1;
50 u16 tcr2;
51 u16 rcr2;
52 int configured;
53
54 unsigned int slots;
55 unsigned int tx_mask;
56 unsigned int rx_mask;
57
58 struct bf5xx_i2s_pcm_data tx_dma_data;
59 struct bf5xx_i2s_pcm_data rx_dma_data;
60};
61
62static int bf5xx_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai,
63 unsigned int fmt)
64{
65 struct sport_device *sport_handle = snd_soc_dai_get_drvdata(cpu_dai);
66 struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
67 int ret = 0;
68
69
70 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
71 case SND_SOC_DAIFMT_I2S:
72 bf5xx_i2s->tcr1 |= TFSR | TCKFE;
73 bf5xx_i2s->rcr1 |= RFSR | RCKFE;
74 bf5xx_i2s->tcr2 |= TSFSE;
75 bf5xx_i2s->rcr2 |= RSFSE;
76 break;
77 case SND_SOC_DAIFMT_DSP_A:
78 bf5xx_i2s->tcr1 |= TFSR;
79 bf5xx_i2s->rcr1 |= RFSR;
80 break;
81 case SND_SOC_DAIFMT_LEFT_J:
82 ret = -EINVAL;
83 break;
84 default:
85 dev_err(cpu_dai->dev, "%s: Unknown DAI format type\n",
86 __func__);
87 ret = -EINVAL;
88 break;
89 }
90
91 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
92 case SND_SOC_DAIFMT_CBM_CFM:
93 break;
94 case SND_SOC_DAIFMT_CBS_CFS:
95 case SND_SOC_DAIFMT_CBM_CFS:
96 case SND_SOC_DAIFMT_CBS_CFM:
97 ret = -EINVAL;
98 break;
99 default:
100 dev_err(cpu_dai->dev, "%s: Unknown DAI master type\n",
101 __func__);
102 ret = -EINVAL;
103 break;
104 }
105
106 return ret;
107}
108
109static int bf5xx_i2s_hw_params(struct snd_pcm_substream *substream,
110 struct snd_pcm_hw_params *params,
111 struct snd_soc_dai *dai)
112{
113 struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
114 struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
115 int ret = 0;
116
117 bf5xx_i2s->tcr2 &= ~0x1f;
118 bf5xx_i2s->rcr2 &= ~0x1f;
119 switch (params_format(params)) {
120 case SNDRV_PCM_FORMAT_S8:
121 bf5xx_i2s->tcr2 |= 7;
122 bf5xx_i2s->rcr2 |= 7;
123 sport_handle->wdsize = 1;
124 case SNDRV_PCM_FORMAT_S16_LE:
125 bf5xx_i2s->tcr2 |= 15;
126 bf5xx_i2s->rcr2 |= 15;
127 sport_handle->wdsize = 2;
128 break;
129 case SNDRV_PCM_FORMAT_S24_LE:
130 bf5xx_i2s->tcr2 |= 23;
131 bf5xx_i2s->rcr2 |= 23;
132 sport_handle->wdsize = 3;
133 break;
134 case SNDRV_PCM_FORMAT_S32_LE:
135 bf5xx_i2s->tcr2 |= 31;
136 bf5xx_i2s->rcr2 |= 31;
137 sport_handle->wdsize = 4;
138 break;
139 }
140
141 if (!bf5xx_i2s->configured) {
142
143
144
145
146
147
148
149
150 bf5xx_i2s->configured = 1;
151 ret = sport_config_rx(sport_handle, bf5xx_i2s->rcr1,
152 bf5xx_i2s->rcr2, 0, 0);
153 if (ret) {
154 dev_err(dai->dev, "SPORT is busy!\n");
155 return -EBUSY;
156 }
157
158 ret = sport_config_tx(sport_handle, bf5xx_i2s->tcr1,
159 bf5xx_i2s->tcr2, 0, 0);
160 if (ret) {
161 dev_err(dai->dev, "SPORT is busy!\n");
162 return -EBUSY;
163 }
164 }
165
166 return 0;
167}
168
169static void bf5xx_i2s_shutdown(struct snd_pcm_substream *substream,
170 struct snd_soc_dai *dai)
171{
172 struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
173 struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
174
175 dev_dbg(dai->dev, "%s enter\n", __func__);
176
177 if (!dai->active)
178 bf5xx_i2s->configured = 0;
179}
180
181static int bf5xx_i2s_set_channel_map(struct snd_soc_dai *dai,
182 unsigned int tx_num, unsigned int *tx_slot,
183 unsigned int rx_num, unsigned int *rx_slot)
184{
185 struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
186 struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
187 unsigned int tx_mapped = 0, rx_mapped = 0;
188 unsigned int slot;
189 int i;
190
191 if ((tx_num > BFIN_TDM_DAI_MAX_SLOTS) ||
192 (rx_num > BFIN_TDM_DAI_MAX_SLOTS))
193 return -EINVAL;
194
195 for (i = 0; i < tx_num; i++) {
196 slot = tx_slot[i];
197 if ((slot < BFIN_TDM_DAI_MAX_SLOTS) &&
198 (!(tx_mapped & (1 << slot)))) {
199 bf5xx_i2s->tx_dma_data.map[i] = slot;
200 tx_mapped |= 1 << slot;
201 } else
202 return -EINVAL;
203 }
204 for (i = 0; i < rx_num; i++) {
205 slot = rx_slot[i];
206 if ((slot < BFIN_TDM_DAI_MAX_SLOTS) &&
207 (!(rx_mapped & (1 << slot)))) {
208 bf5xx_i2s->rx_dma_data.map[i] = slot;
209 rx_mapped |= 1 << slot;
210 } else
211 return -EINVAL;
212 }
213
214 return 0;
215}
216
217static int bf5xx_i2s_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
218 unsigned int rx_mask, int slots, int width)
219{
220 struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
221 struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
222
223 if (slots % 8 != 0 || slots > 8)
224 return -EINVAL;
225
226 if (width != 32)
227 return -EINVAL;
228
229 bf5xx_i2s->slots = slots;
230 bf5xx_i2s->tx_mask = tx_mask;
231 bf5xx_i2s->rx_mask = rx_mask;
232
233 bf5xx_i2s->tx_dma_data.tdm_mode = slots != 0;
234 bf5xx_i2s->rx_dma_data.tdm_mode = slots != 0;
235
236 return sport_set_multichannel(sport_handle, slots, tx_mask, rx_mask, 0);
237}
238
239#ifdef CONFIG_PM
240static int bf5xx_i2s_suspend(struct snd_soc_dai *dai)
241{
242 struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
243
244 dev_dbg(dai->dev, "%s : sport %d\n", __func__, dai->id);
245
246 if (dai->capture_active)
247 sport_rx_stop(sport_handle);
248 if (dai->playback_active)
249 sport_tx_stop(sport_handle);
250 return 0;
251}
252
253static int bf5xx_i2s_resume(struct snd_soc_dai *dai)
254{
255 struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
256 struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
257 int ret;
258
259 dev_dbg(dai->dev, "%s : sport %d\n", __func__, dai->id);
260
261 ret = sport_config_rx(sport_handle, bf5xx_i2s->rcr1,
262 bf5xx_i2s->rcr2, 0, 0);
263 if (ret) {
264 dev_err(dai->dev, "SPORT is busy!\n");
265 return -EBUSY;
266 }
267
268 ret = sport_config_tx(sport_handle, bf5xx_i2s->tcr1,
269 bf5xx_i2s->tcr2, 0, 0);
270 if (ret) {
271 dev_err(dai->dev, "SPORT is busy!\n");
272 return -EBUSY;
273 }
274
275 return sport_set_multichannel(sport_handle, bf5xx_i2s->slots,
276 bf5xx_i2s->tx_mask, bf5xx_i2s->rx_mask, 0);
277}
278
279#else
280#define bf5xx_i2s_suspend NULL
281#define bf5xx_i2s_resume NULL
282#endif
283
284static int bf5xx_i2s_dai_probe(struct snd_soc_dai *dai)
285{
286 struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
287 struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
288 unsigned int i;
289
290 for (i = 0; i < BFIN_TDM_DAI_MAX_SLOTS; i++) {
291 bf5xx_i2s->tx_dma_data.map[i] = i;
292 bf5xx_i2s->rx_dma_data.map[i] = i;
293 }
294
295 dai->playback_dma_data = &bf5xx_i2s->tx_dma_data;
296 dai->capture_dma_data = &bf5xx_i2s->rx_dma_data;
297
298 return 0;
299}
300
301#define BF5XX_I2S_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
302 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
303 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \
304 SNDRV_PCM_RATE_96000)
305
306#define BF5XX_I2S_FORMATS \
307 (SNDRV_PCM_FMTBIT_S8 | \
308 SNDRV_PCM_FMTBIT_S16_LE | \
309 SNDRV_PCM_FMTBIT_S24_LE | \
310 SNDRV_PCM_FMTBIT_S32_LE)
311
312static const struct snd_soc_dai_ops bf5xx_i2s_dai_ops = {
313 .shutdown = bf5xx_i2s_shutdown,
314 .hw_params = bf5xx_i2s_hw_params,
315 .set_fmt = bf5xx_i2s_set_dai_fmt,
316 .set_tdm_slot = bf5xx_i2s_set_tdm_slot,
317 .set_channel_map = bf5xx_i2s_set_channel_map,
318};
319
320static struct snd_soc_dai_driver bf5xx_i2s_dai = {
321 .probe = bf5xx_i2s_dai_probe,
322 .suspend = bf5xx_i2s_suspend,
323 .resume = bf5xx_i2s_resume,
324 .playback = {
325 .channels_min = 2,
326 .channels_max = 8,
327 .rates = BF5XX_I2S_RATES,
328 .formats = BF5XX_I2S_FORMATS,},
329 .capture = {
330 .channels_min = 2,
331 .channels_max = 8,
332 .rates = BF5XX_I2S_RATES,
333 .formats = BF5XX_I2S_FORMATS,},
334 .ops = &bf5xx_i2s_dai_ops,
335};
336
337static const struct snd_soc_component_driver bf5xx_i2s_component = {
338 .name = "bf5xx-i2s",
339};
340
341static int bf5xx_i2s_probe(struct platform_device *pdev)
342{
343 struct sport_device *sport_handle;
344 int ret;
345
346
347 sport_handle = sport_init(pdev, 4, 8 * sizeof(u32),
348 sizeof(struct bf5xx_i2s_port));
349 if (!sport_handle)
350 return -ENODEV;
351
352
353 ret = snd_soc_register_component(&pdev->dev, &bf5xx_i2s_component,
354 &bf5xx_i2s_dai, 1);
355 if (ret) {
356 dev_err(&pdev->dev, "Failed to register DAI: %d\n", ret);
357 sport_done(sport_handle);
358 return ret;
359 }
360
361 return 0;
362}
363
364static int bf5xx_i2s_remove(struct platform_device *pdev)
365{
366 struct sport_device *sport_handle = platform_get_drvdata(pdev);
367
368 dev_dbg(&pdev->dev, "%s enter\n", __func__);
369
370 snd_soc_unregister_component(&pdev->dev);
371 sport_done(sport_handle);
372
373 return 0;
374}
375
376static struct platform_driver bfin_i2s_driver = {
377 .probe = bf5xx_i2s_probe,
378 .remove = bf5xx_i2s_remove,
379 .driver = {
380 .name = "bfin-i2s",
381 .owner = THIS_MODULE,
382 },
383};
384
385module_platform_driver(bfin_i2s_driver);
386
387
388MODULE_AUTHOR("Cliff Cai");
389MODULE_DESCRIPTION("I2S driver for ADI Blackfin");
390MODULE_LICENSE("GPL");
391
392
