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15#include <linux/module.h>
16#include <linux/device.h>
17#include <linux/io.h>
18#include <linux/clk.h>
19#include <linux/mutex.h>
20
21#include <sound/soc.h>
22#include <sound/soc-dapm.h>
23#include <sound/pcm.h>
24#include <sound/pcm_params.h>
25
26#include "ux500_pcm.h"
27#include "ux500_msp_dai.h"
28#include "mop500_ab8500.h"
29#include "../codecs/ab8500-codec.h"
30
31#define TX_SLOT_MONO 0x0008
32#define TX_SLOT_STEREO 0x000a
33#define RX_SLOT_MONO 0x0001
34#define RX_SLOT_STEREO 0x0003
35#define TX_SLOT_8CH 0x00FF
36#define RX_SLOT_8CH 0x00FF
37
38#define DEF_TX_SLOTS TX_SLOT_STEREO
39#define DEF_RX_SLOTS RX_SLOT_MONO
40
41#define DRIVERMODE_NORMAL 0
42#define DRIVERMODE_CODEC_ONLY 1
43
44
45static unsigned int tx_slots = DEF_TX_SLOTS;
46static unsigned int rx_slots = DEF_RX_SLOTS;
47
48
49static DEFINE_MUTEX(mop500_ab8500_params_lock);
50static unsigned long mop500_ab8500_usage;
51static int mop500_ab8500_rate;
52static int mop500_ab8500_channels;
53
54
55static const char * const enum_mclk[] = {
56 "SYSCLK",
57 "ULPCLK"
58};
59enum mclk {
60 MCLK_SYSCLK,
61 MCLK_ULPCLK,
62};
63
64static SOC_ENUM_SINGLE_EXT_DECL(soc_enum_mclk, enum_mclk);
65
66
67struct mop500_ab8500_drvdata {
68
69 enum mclk mclk_sel;
70 struct clk *clk_ptr_intclk;
71 struct clk *clk_ptr_sysclk;
72 struct clk *clk_ptr_ulpclk;
73};
74
75static inline const char *get_mclk_str(enum mclk mclk_sel)
76{
77 switch (mclk_sel) {
78 case MCLK_SYSCLK:
79 return "SYSCLK";
80 case MCLK_ULPCLK:
81 return "ULPCLK";
82 default:
83 return "Unknown";
84 }
85}
86
87static int mop500_ab8500_set_mclk(struct device *dev,
88 struct mop500_ab8500_drvdata *drvdata)
89{
90 int status;
91 struct clk *clk_ptr;
92
93 if (IS_ERR(drvdata->clk_ptr_intclk)) {
94 dev_err(dev,
95 "%s: ERROR: intclk not initialized!\n", __func__);
96 return -EIO;
97 }
98
99 switch (drvdata->mclk_sel) {
100 case MCLK_SYSCLK:
101 clk_ptr = drvdata->clk_ptr_sysclk;
102 break;
103 case MCLK_ULPCLK:
104 clk_ptr = drvdata->clk_ptr_ulpclk;
105 break;
106 default:
107 return -EINVAL;
108 }
109
110 if (IS_ERR(clk_ptr)) {
111 dev_err(dev, "%s: ERROR: %s not initialized!\n", __func__,
112 get_mclk_str(drvdata->mclk_sel));
113 return -EIO;
114 }
115
116 status = clk_set_parent(drvdata->clk_ptr_intclk, clk_ptr);
117 if (status)
118 dev_err(dev,
119 "%s: ERROR: Setting intclk parent to %s failed (ret = %d)!",
120 __func__, get_mclk_str(drvdata->mclk_sel), status);
121 else
122 dev_dbg(dev,
123 "%s: intclk parent changed to %s.\n",
124 __func__, get_mclk_str(drvdata->mclk_sel));
125
126 return status;
127}
128
129
130
131
132
133static int mclk_input_control_get(struct snd_kcontrol *kcontrol,
134 struct snd_ctl_elem_value *ucontrol)
135{
136 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
137 struct mop500_ab8500_drvdata *drvdata =
138 snd_soc_card_get_drvdata(card);
139
140 ucontrol->value.enumerated.item[0] = drvdata->mclk_sel;
141
142 return 0;
143}
144
145static int mclk_input_control_put(struct snd_kcontrol *kcontrol,
146 struct snd_ctl_elem_value *ucontrol)
147{
148 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
149 struct mop500_ab8500_drvdata *drvdata =
150 snd_soc_card_get_drvdata(card);
151 unsigned int val = ucontrol->value.enumerated.item[0];
152
153 if (val > (unsigned int)MCLK_ULPCLK)
154 return -EINVAL;
155 if (drvdata->mclk_sel == val)
156 return 0;
157
158 drvdata->mclk_sel = val;
159
160 return 1;
161}
162
163
164
165
166
167static struct snd_kcontrol_new mop500_ab8500_ctrls[] = {
168 SOC_ENUM_EXT("Master Clock Select",
169 soc_enum_mclk,
170 mclk_input_control_get, mclk_input_control_put),
171 SOC_DAPM_PIN_SWITCH("Headset Left"),
172 SOC_DAPM_PIN_SWITCH("Headset Right"),
173 SOC_DAPM_PIN_SWITCH("Earpiece"),
174 SOC_DAPM_PIN_SWITCH("Speaker Left"),
175 SOC_DAPM_PIN_SWITCH("Speaker Right"),
176 SOC_DAPM_PIN_SWITCH("LineOut Left"),
177 SOC_DAPM_PIN_SWITCH("LineOut Right"),
178 SOC_DAPM_PIN_SWITCH("Vibra 1"),
179 SOC_DAPM_PIN_SWITCH("Vibra 2"),
180 SOC_DAPM_PIN_SWITCH("Mic 1"),
181 SOC_DAPM_PIN_SWITCH("Mic 2"),
182 SOC_DAPM_PIN_SWITCH("LineIn Left"),
183 SOC_DAPM_PIN_SWITCH("LineIn Right"),
184 SOC_DAPM_PIN_SWITCH("DMic 1"),
185 SOC_DAPM_PIN_SWITCH("DMic 2"),
186 SOC_DAPM_PIN_SWITCH("DMic 3"),
187 SOC_DAPM_PIN_SWITCH("DMic 4"),
188 SOC_DAPM_PIN_SWITCH("DMic 5"),
189 SOC_DAPM_PIN_SWITCH("DMic 6"),
190};
191
192
193
194static int mop500_ab8500_startup(struct snd_pcm_substream *substream)
195{
196 struct snd_soc_pcm_runtime *rtd = substream->private_data;
197
198
199 return mop500_ab8500_set_mclk(rtd->card->dev,
200 snd_soc_card_get_drvdata(rtd->card));
201}
202
203static void mop500_ab8500_shutdown(struct snd_pcm_substream *substream)
204{
205 struct snd_soc_pcm_runtime *rtd = substream->private_data;
206 struct device *dev = rtd->card->dev;
207
208 dev_dbg(dev, "%s: Enter\n", __func__);
209
210
211 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
212 tx_slots = DEF_TX_SLOTS;
213 else
214 rx_slots = DEF_RX_SLOTS;
215}
216
217static int mop500_ab8500_hw_params(struct snd_pcm_substream *substream,
218 struct snd_pcm_hw_params *params)
219{
220 struct snd_soc_pcm_runtime *rtd = substream->private_data;
221 struct snd_soc_dai *codec_dai = rtd->codec_dai;
222 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
223 struct device *dev = rtd->card->dev;
224 unsigned int fmt;
225 int channels, ret = 0, driver_mode, slots;
226 unsigned int sw_codec, sw_cpu;
227 bool is_playback;
228
229 dev_dbg(dev, "%s: Enter\n", __func__);
230
231 dev_dbg(dev, "%s: substream->pcm->name = %s\n"
232 "substream->pcm->id = %s.\n"
233 "substream->name = %s.\n"
234 "substream->number = %d.\n",
235 __func__,
236 substream->pcm->name,
237 substream->pcm->id,
238 substream->name,
239 substream->number);
240
241
242 mutex_lock(&mop500_ab8500_params_lock);
243 if (mop500_ab8500_usage) {
244 if (mop500_ab8500_rate != params_rate(params) ||
245 mop500_ab8500_channels != params_channels(params)) {
246 mutex_unlock(&mop500_ab8500_params_lock);
247 return -EBUSY;
248 }
249 } else {
250 mop500_ab8500_rate = params_rate(params);
251 mop500_ab8500_channels = params_channels(params);
252 }
253 __set_bit(cpu_dai->id, &mop500_ab8500_usage);
254 mutex_unlock(&mop500_ab8500_params_lock);
255
256 channels = params_channels(params);
257
258 switch (params_format(params)) {
259 case SNDRV_PCM_FORMAT_S32_LE:
260 sw_cpu = 32;
261 break;
262
263 case SNDRV_PCM_FORMAT_S16_LE:
264 sw_cpu = 16;
265 break;
266
267 default:
268 return -EINVAL;
269 }
270
271
272 if (channels == 8)
273 driver_mode = DRIVERMODE_CODEC_ONLY;
274 else
275 driver_mode = DRIVERMODE_NORMAL;
276 dev_dbg(dev, "%s: Driver-mode: %s.\n", __func__,
277 (driver_mode == DRIVERMODE_NORMAL) ? "NORMAL" : "CODEC_ONLY");
278
279
280
281 if (driver_mode == DRIVERMODE_NORMAL) {
282 fmt = SND_SOC_DAIFMT_DSP_A |
283 SND_SOC_DAIFMT_CBM_CFM |
284 SND_SOC_DAIFMT_NB_NF |
285 SND_SOC_DAIFMT_CONT;
286 } else {
287 fmt = SND_SOC_DAIFMT_DSP_A |
288 SND_SOC_DAIFMT_CBM_CFM |
289 SND_SOC_DAIFMT_NB_NF |
290 SND_SOC_DAIFMT_GATED;
291 }
292
293 ret = snd_soc_runtime_set_dai_fmt(rtd, fmt);
294 if (ret)
295 return ret;
296
297
298
299 is_playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
300 switch (channels) {
301 case 1:
302 slots = 16;
303 tx_slots = (is_playback) ? TX_SLOT_MONO : 0;
304 rx_slots = (is_playback) ? 0 : RX_SLOT_MONO;
305 break;
306 case 2:
307 slots = 16;
308 tx_slots = (is_playback) ? TX_SLOT_STEREO : 0;
309 rx_slots = (is_playback) ? 0 : RX_SLOT_STEREO;
310 break;
311 case 8:
312 slots = 16;
313 tx_slots = (is_playback) ? TX_SLOT_8CH : 0;
314 rx_slots = (is_playback) ? 0 : RX_SLOT_8CH;
315 break;
316 default:
317 return -EINVAL;
318 }
319
320 if (driver_mode == DRIVERMODE_NORMAL)
321 sw_codec = sw_cpu;
322 else
323 sw_codec = 20;
324
325 dev_dbg(dev, "%s: CPU-DAI TDM: TX=0x%04X RX=0x%04x\n", __func__,
326 tx_slots, rx_slots);
327 ret = snd_soc_dai_set_tdm_slot(cpu_dai, tx_slots, rx_slots, slots,
328 sw_cpu);
329 if (ret)
330 return ret;
331
332 dev_dbg(dev, "%s: CODEC-DAI TDM: TX=0x%04X RX=0x%04x\n", __func__,
333 tx_slots, rx_slots);
334 ret = snd_soc_dai_set_tdm_slot(codec_dai, tx_slots, rx_slots, slots,
335 sw_codec);
336 if (ret)
337 return ret;
338
339 return 0;
340}
341
342static int mop500_ab8500_hw_free(struct snd_pcm_substream *substream)
343{
344 struct snd_soc_pcm_runtime *rtd = substream->private_data;
345 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
346
347 mutex_lock(&mop500_ab8500_params_lock);
348 __clear_bit(cpu_dai->id, &mop500_ab8500_usage);
349 mutex_unlock(&mop500_ab8500_params_lock);
350
351 return 0;
352}
353
354struct snd_soc_ops mop500_ab8500_ops[] = {
355 {
356 .hw_params = mop500_ab8500_hw_params,
357 .hw_free = mop500_ab8500_hw_free,
358 .startup = mop500_ab8500_startup,
359 .shutdown = mop500_ab8500_shutdown,
360 }
361};
362
363int mop500_ab8500_machine_init(struct snd_soc_pcm_runtime *rtd)
364{
365 struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
366 struct device *dev = rtd->card->dev;
367 struct mop500_ab8500_drvdata *drvdata;
368 int ret;
369
370 dev_dbg(dev, "%s Enter.\n", __func__);
371
372
373 drvdata = devm_kzalloc(dev, sizeof(struct mop500_ab8500_drvdata),
374 GFP_KERNEL);
375
376 if (!drvdata)
377 return -ENOMEM;
378
379 snd_soc_card_set_drvdata(rtd->card, drvdata);
380
381
382
383 drvdata->clk_ptr_sysclk = clk_get(dev, "sysclk");
384 if (IS_ERR(drvdata->clk_ptr_sysclk))
385 dev_warn(dev, "%s: WARNING: clk_get failed for 'sysclk'!\n",
386 __func__);
387 drvdata->clk_ptr_ulpclk = clk_get(dev, "ulpclk");
388 if (IS_ERR(drvdata->clk_ptr_ulpclk))
389 dev_warn(dev, "%s: WARNING: clk_get failed for 'ulpclk'!\n",
390 __func__);
391 drvdata->clk_ptr_intclk = clk_get(dev, "intclk");
392 if (IS_ERR(drvdata->clk_ptr_intclk))
393 dev_warn(dev, "%s: WARNING: clk_get failed for 'intclk'!\n",
394 __func__);
395
396
397 drvdata->mclk_sel = MCLK_ULPCLK;
398 ret = mop500_ab8500_set_mclk(dev, drvdata);
399 if (ret < 0)
400 dev_warn(dev, "%s: WARNING: mop500_ab8500_set_mclk!\n",
401 __func__);
402
403 drvdata->mclk_sel = MCLK_ULPCLK;
404
405
406 ret = snd_soc_add_card_controls(rtd->card, mop500_ab8500_ctrls,
407 ARRAY_SIZE(mop500_ab8500_ctrls));
408 if (ret < 0) {
409 pr_err("%s: Failed to add machine-controls (%d)!\n",
410 __func__, ret);
411 return ret;
412 }
413
414 ret = snd_soc_dapm_disable_pin(dapm, "Earpiece");
415 ret |= snd_soc_dapm_disable_pin(dapm, "Speaker Left");
416 ret |= snd_soc_dapm_disable_pin(dapm, "Speaker Right");
417 ret |= snd_soc_dapm_disable_pin(dapm, "LineOut Left");
418 ret |= snd_soc_dapm_disable_pin(dapm, "LineOut Right");
419 ret |= snd_soc_dapm_disable_pin(dapm, "Vibra 1");
420 ret |= snd_soc_dapm_disable_pin(dapm, "Vibra 2");
421 ret |= snd_soc_dapm_disable_pin(dapm, "Mic 1");
422 ret |= snd_soc_dapm_disable_pin(dapm, "Mic 2");
423 ret |= snd_soc_dapm_disable_pin(dapm, "LineIn Left");
424 ret |= snd_soc_dapm_disable_pin(dapm, "LineIn Right");
425 ret |= snd_soc_dapm_disable_pin(dapm, "DMic 1");
426 ret |= snd_soc_dapm_disable_pin(dapm, "DMic 2");
427 ret |= snd_soc_dapm_disable_pin(dapm, "DMic 3");
428 ret |= snd_soc_dapm_disable_pin(dapm, "DMic 4");
429 ret |= snd_soc_dapm_disable_pin(dapm, "DMic 5");
430 ret |= snd_soc_dapm_disable_pin(dapm, "DMic 6");
431
432 return ret;
433}
434
435void mop500_ab8500_remove(struct snd_soc_card *card)
436{
437 struct mop500_ab8500_drvdata *drvdata = snd_soc_card_get_drvdata(card);
438
439 if (drvdata->clk_ptr_sysclk != NULL)
440 clk_put(drvdata->clk_ptr_sysclk);
441 if (drvdata->clk_ptr_ulpclk != NULL)
442 clk_put(drvdata->clk_ptr_ulpclk);
443 if (drvdata->clk_ptr_intclk != NULL)
444 clk_put(drvdata->clk_ptr_intclk);
445
446 snd_soc_card_set_drvdata(card, drvdata);
447}
448
