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17#include <linux/module.h>
18#include <linux/pm_runtime.h>
19#include <linux/regmap.h>
20#include <sound/soc.h>
21#include "mtk-afe-fe-dai.h"
22#include "mtk-base-afe.h"
23
24#define AFE_BASE_END_OFFSET 8
25
26static int mtk_regmap_update_bits(struct regmap *map, int reg,
27 unsigned int mask,
28 unsigned int val)
29{
30 if (reg < 0)
31 return 0;
32 return regmap_update_bits(map, reg, mask, val);
33}
34
35static int mtk_regmap_write(struct regmap *map, int reg, unsigned int val)
36{
37 if (reg < 0)
38 return 0;
39 return regmap_write(map, reg, val);
40}
41
42int mtk_afe_fe_startup(struct snd_pcm_substream *substream,
43 struct snd_soc_dai *dai)
44{
45 struct snd_soc_pcm_runtime *rtd = substream->private_data;
46 struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
47 struct snd_pcm_runtime *runtime = substream->runtime;
48 int memif_num = rtd->cpu_dai->id;
49 struct mtk_base_afe_memif *memif = &afe->memif[memif_num];
50 const struct snd_pcm_hardware *mtk_afe_hardware = afe->mtk_afe_hardware;
51 int ret;
52
53 memif->substream = substream;
54
55 snd_pcm_hw_constraint_step(substream->runtime, 0,
56 SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 16);
57
58 mtk_regmap_update_bits(afe->regmap, memif->data->agent_disable_reg,
59 1 << memif->data->agent_disable_shift,
60 0 << memif->data->agent_disable_shift);
61
62 snd_soc_set_runtime_hwparams(substream, mtk_afe_hardware);
63
64
65
66
67
68
69
70 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
71 int periods_max = mtk_afe_hardware->periods_max;
72
73 ret = snd_pcm_hw_constraint_minmax(runtime,
74 SNDRV_PCM_HW_PARAM_PERIODS,
75 3, periods_max);
76 if (ret < 0) {
77 dev_err(afe->dev, "hw_constraint_minmax failed\n");
78 return ret;
79 }
80 }
81
82 ret = snd_pcm_hw_constraint_integer(runtime,
83 SNDRV_PCM_HW_PARAM_PERIODS);
84 if (ret < 0)
85 dev_err(afe->dev, "snd_pcm_hw_constraint_integer failed\n");
86
87
88 if (memif->irq_usage < 0) {
89 int irq_id = mtk_dynamic_irq_acquire(afe);
90
91 if (irq_id != afe->irqs_size) {
92
93 memif->irq_usage = irq_id;
94 } else {
95 dev_err(afe->dev, "%s() error: no more asys irq\n",
96 __func__);
97 ret = -EBUSY;
98 }
99 }
100 return ret;
101}
102EXPORT_SYMBOL_GPL(mtk_afe_fe_startup);
103
104void mtk_afe_fe_shutdown(struct snd_pcm_substream *substream,
105 struct snd_soc_dai *dai)
106{
107 struct snd_soc_pcm_runtime *rtd = substream->private_data;
108 struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
109 struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id];
110 int irq_id;
111
112 irq_id = memif->irq_usage;
113
114 mtk_regmap_update_bits(afe->regmap, memif->data->agent_disable_reg,
115 1 << memif->data->agent_disable_shift,
116 1 << memif->data->agent_disable_shift);
117
118 if (!memif->const_irq) {
119 mtk_dynamic_irq_release(afe, irq_id);
120 memif->irq_usage = -1;
121 memif->substream = NULL;
122 }
123}
124EXPORT_SYMBOL_GPL(mtk_afe_fe_shutdown);
125
126int mtk_afe_fe_hw_params(struct snd_pcm_substream *substream,
127 struct snd_pcm_hw_params *params,
128 struct snd_soc_dai *dai)
129{
130 struct snd_soc_pcm_runtime *rtd = substream->private_data;
131 struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
132 struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id];
133 int msb_at_bit33 = 0;
134 int ret, fs = 0;
135
136 ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
137 if (ret < 0)
138 return ret;
139
140 msb_at_bit33 = upper_32_bits(substream->runtime->dma_addr) ? 1 : 0;
141 memif->phys_buf_addr = lower_32_bits(substream->runtime->dma_addr);
142 memif->buffer_size = substream->runtime->dma_bytes;
143
144
145 mtk_regmap_write(afe->regmap, memif->data->reg_ofs_base,
146 memif->phys_buf_addr);
147
148 mtk_regmap_write(afe->regmap,
149 memif->data->reg_ofs_base + AFE_BASE_END_OFFSET,
150 memif->phys_buf_addr + memif->buffer_size - 1);
151
152
153 mtk_regmap_update_bits(afe->regmap, memif->data->msb_reg,
154 1 << memif->data->msb_shift,
155 msb_at_bit33 << memif->data->msb_shift);
156
157
158 if (memif->data->mono_shift >= 0) {
159 unsigned int mono = (params_channels(params) == 1) ? 1 : 0;
160
161 mtk_regmap_update_bits(afe->regmap, memif->data->mono_reg,
162 1 << memif->data->mono_shift,
163 mono << memif->data->mono_shift);
164 }
165
166
167 if (memif->data->fs_shift < 0)
168 return 0;
169
170 fs = afe->memif_fs(substream, params_rate(params));
171
172 if (fs < 0)
173 return -EINVAL;
174
175 mtk_regmap_update_bits(afe->regmap, memif->data->fs_reg,
176 memif->data->fs_maskbit << memif->data->fs_shift,
177 fs << memif->data->fs_shift);
178
179 return 0;
180}
181EXPORT_SYMBOL_GPL(mtk_afe_fe_hw_params);
182
183int mtk_afe_fe_hw_free(struct snd_pcm_substream *substream,
184 struct snd_soc_dai *dai)
185{
186 return snd_pcm_lib_free_pages(substream);
187}
188EXPORT_SYMBOL_GPL(mtk_afe_fe_hw_free);
189
190int mtk_afe_fe_trigger(struct snd_pcm_substream *substream, int cmd,
191 struct snd_soc_dai *dai)
192{
193 struct snd_soc_pcm_runtime *rtd = substream->private_data;
194 struct snd_pcm_runtime * const runtime = substream->runtime;
195 struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
196 struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id];
197 struct mtk_base_afe_irq *irqs = &afe->irqs[memif->irq_usage];
198 const struct mtk_base_irq_data *irq_data = irqs->irq_data;
199 unsigned int counter = runtime->period_size;
200 int fs;
201
202 dev_dbg(afe->dev, "%s %s cmd=%d\n", __func__, memif->data->name, cmd);
203
204 switch (cmd) {
205 case SNDRV_PCM_TRIGGER_START:
206 case SNDRV_PCM_TRIGGER_RESUME:
207 if (memif->data->enable_shift >= 0)
208 mtk_regmap_update_bits(afe->regmap,
209 memif->data->enable_reg,
210 1 << memif->data->enable_shift,
211 1 << memif->data->enable_shift);
212
213
214 mtk_regmap_update_bits(afe->regmap, irq_data->irq_cnt_reg,
215 irq_data->irq_cnt_maskbit
216 << irq_data->irq_cnt_shift,
217 counter << irq_data->irq_cnt_shift);
218
219
220 fs = afe->irq_fs(substream, runtime->rate);
221
222 if (fs < 0)
223 return -EINVAL;
224
225 mtk_regmap_update_bits(afe->regmap, irq_data->irq_fs_reg,
226 irq_data->irq_fs_maskbit
227 << irq_data->irq_fs_shift,
228 fs << irq_data->irq_fs_shift);
229
230
231 mtk_regmap_update_bits(afe->regmap, irq_data->irq_en_reg,
232 1 << irq_data->irq_en_shift,
233 1 << irq_data->irq_en_shift);
234
235 return 0;
236 case SNDRV_PCM_TRIGGER_STOP:
237 case SNDRV_PCM_TRIGGER_SUSPEND:
238 mtk_regmap_update_bits(afe->regmap, memif->data->enable_reg,
239 1 << memif->data->enable_shift, 0);
240
241 mtk_regmap_update_bits(afe->regmap, irq_data->irq_en_reg,
242 1 << irq_data->irq_en_shift,
243 0 << irq_data->irq_en_shift);
244
245 mtk_regmap_write(afe->regmap, irq_data->irq_clr_reg,
246 1 << irq_data->irq_clr_shift);
247 return 0;
248 default:
249 return -EINVAL;
250 }
251}
252EXPORT_SYMBOL_GPL(mtk_afe_fe_trigger);
253
254int mtk_afe_fe_prepare(struct snd_pcm_substream *substream,
255 struct snd_soc_dai *dai)
256{
257 struct snd_soc_pcm_runtime *rtd = substream->private_data;
258 struct mtk_base_afe *afe = snd_soc_platform_get_drvdata(rtd->platform);
259 struct mtk_base_afe_memif *memif = &afe->memif[rtd->cpu_dai->id];
260 int hd_audio = 0;
261
262
263 switch (substream->runtime->format) {
264 case SNDRV_PCM_FORMAT_S16_LE:
265 hd_audio = 0;
266 break;
267 case SNDRV_PCM_FORMAT_S32_LE:
268 hd_audio = 1;
269 break;
270 case SNDRV_PCM_FORMAT_S24_LE:
271 hd_audio = 1;
272 break;
273 default:
274 dev_err(afe->dev, "%s() error: unsupported format %d\n",
275 __func__, substream->runtime->format);
276 break;
277 }
278
279 mtk_regmap_update_bits(afe->regmap, memif->data->hd_reg,
280 1 << memif->data->hd_shift,
281 hd_audio << memif->data->hd_shift);
282
283 return 0;
284}
285EXPORT_SYMBOL_GPL(mtk_afe_fe_prepare);
286
287const struct snd_soc_dai_ops mtk_afe_fe_ops = {
288 .startup = mtk_afe_fe_startup,
289 .shutdown = mtk_afe_fe_shutdown,
290 .hw_params = mtk_afe_fe_hw_params,
291 .hw_free = mtk_afe_fe_hw_free,
292 .prepare = mtk_afe_fe_prepare,
293 .trigger = mtk_afe_fe_trigger,
294};
295EXPORT_SYMBOL_GPL(mtk_afe_fe_ops);
296
297static DEFINE_MUTEX(irqs_lock);
298int mtk_dynamic_irq_acquire(struct mtk_base_afe *afe)
299{
300 int i;
301
302 mutex_lock(&afe->irq_alloc_lock);
303 for (i = 0; i < afe->irqs_size; ++i) {
304 if (afe->irqs[i].irq_occupyed == 0) {
305 afe->irqs[i].irq_occupyed = 1;
306 mutex_unlock(&afe->irq_alloc_lock);
307 return i;
308 }
309 }
310 mutex_unlock(&afe->irq_alloc_lock);
311 return afe->irqs_size;
312}
313EXPORT_SYMBOL_GPL(mtk_dynamic_irq_acquire);
314
315int mtk_dynamic_irq_release(struct mtk_base_afe *afe, int irq_id)
316{
317 mutex_lock(&afe->irq_alloc_lock);
318 if (irq_id >= 0 && irq_id < afe->irqs_size) {
319 afe->irqs[irq_id].irq_occupyed = 0;
320 mutex_unlock(&afe->irq_alloc_lock);
321 return 0;
322 }
323 mutex_unlock(&afe->irq_alloc_lock);
324 return -EINVAL;
325}
326EXPORT_SYMBOL_GPL(mtk_dynamic_irq_release);
327
328int mtk_afe_dai_suspend(struct snd_soc_dai *dai)
329{
330 struct mtk_base_afe *afe = dev_get_drvdata(dai->dev);
331 struct device *dev = afe->dev;
332 struct regmap *regmap = afe->regmap;
333 int i;
334
335 if (pm_runtime_status_suspended(dev) || afe->suspended)
336 return 0;
337
338 if (!afe->reg_back_up)
339 afe->reg_back_up =
340 devm_kcalloc(dev, afe->reg_back_up_list_num,
341 sizeof(unsigned int), GFP_KERNEL);
342
343 for (i = 0; i < afe->reg_back_up_list_num; i++)
344 regmap_read(regmap, afe->reg_back_up_list[i],
345 &afe->reg_back_up[i]);
346
347 afe->suspended = true;
348 afe->runtime_suspend(dev);
349 return 0;
350}
351EXPORT_SYMBOL_GPL(mtk_afe_dai_suspend);
352
353int mtk_afe_dai_resume(struct snd_soc_dai *dai)
354{
355 struct mtk_base_afe *afe = dev_get_drvdata(dai->dev);
356 struct device *dev = afe->dev;
357 struct regmap *regmap = afe->regmap;
358 int i = 0;
359
360 if (pm_runtime_status_suspended(dev) || !afe->suspended)
361 return 0;
362
363 afe->runtime_resume(dev);
364
365 if (!afe->reg_back_up)
366 dev_dbg(dev, "%s no reg_backup\n", __func__);
367
368 for (i = 0; i < afe->reg_back_up_list_num; i++)
369 mtk_regmap_write(regmap, afe->reg_back_up_list[i],
370 afe->reg_back_up[i]);
371
372 afe->suspended = false;
373 return 0;
374}
375EXPORT_SYMBOL_GPL(mtk_afe_dai_resume);
376
377MODULE_DESCRIPTION("Mediatek simple fe dai operator");
378MODULE_AUTHOR("Garlic Tseng <garlic.tseng@mediatek.com>");
379MODULE_LICENSE("GPL v2");
380
381
