1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) ST-Ericsson SA 2012
4 *
5 * Author: Ola Lilja <ola.o.lilja@stericsson.com>,
6 * Kristoffer Karlsson <kristoffer.karlsson@stericsson.com>
7 * for ST-Ericsson.
8 */
9
10 #include <linux/module.h>
11 #include <linux/device.h>
12 #include <linux/io.h>
13 #include <linux/clk.h>
14 #include <linux/mutex.h>
15
16 #include <sound/soc.h>
17 #include <sound/soc-dapm.h>
18 #include <sound/pcm.h>
19 #include <sound/pcm_params.h>
20
21 #include "ux500_pcm.h"
22 #include "ux500_msp_dai.h"
23 #include "mop500_ab8500.h"
24 #include "../codecs/ab8500-codec.h"
25
26 #define TX_SLOT_MONO 0x0008
27 #define TX_SLOT_STEREO 0x000a
28 #define RX_SLOT_MONO 0x0001
29 #define RX_SLOT_STEREO 0x0003
30 #define TX_SLOT_8CH 0x00FF
31 #define RX_SLOT_8CH 0x00FF
32
33 #define DEF_TX_SLOTS TX_SLOT_STEREO
34 #define DEF_RX_SLOTS RX_SLOT_MONO
35
36 #define DRIVERMODE_NORMAL 0
37 #define DRIVERMODE_CODEC_ONLY 1
38
39 /* Slot configuration */
40 static unsigned int tx_slots = DEF_TX_SLOTS;
41 static unsigned int rx_slots = DEF_RX_SLOTS;
42
43 /* Configuration consistency parameters */
44 static DEFINE_MUTEX(mop500_ab8500_params_lock);
45 static unsigned long mop500_ab8500_usage;
46 static int mop500_ab8500_rate;
47 static int mop500_ab8500_channels;
48
49 /* Clocks */
50 static const char * const enum_mclk[] = {
51 "SYSCLK",
52 "ULPCLK"
53 };
54 enum mclk {
55 MCLK_SYSCLK,
56 MCLK_ULPCLK,
57 };
58
59 static SOC_ENUM_SINGLE_EXT_DECL(soc_enum_mclk, enum_mclk);
60
61 /* Private data for machine-part MOP500<->AB8500 */
62 struct mop500_ab8500_drvdata {
63 /* Clocks */
64 enum mclk mclk_sel;
65 struct clk *clk_ptr_intclk;
66 struct clk *clk_ptr_sysclk;
67 struct clk *clk_ptr_ulpclk;
68 };
69
get_mclk_str(enum mclk mclk_sel)70 static inline const char *get_mclk_str(enum mclk mclk_sel)
71 {
72 switch (mclk_sel) {
73 case MCLK_SYSCLK:
74 return "SYSCLK";
75 case MCLK_ULPCLK:
76 return "ULPCLK";
77 default:
78 return "Unknown";
79 }
80 }
81
mop500_ab8500_set_mclk(struct device * dev,struct mop500_ab8500_drvdata * drvdata)82 static int mop500_ab8500_set_mclk(struct device *dev,
83 struct mop500_ab8500_drvdata *drvdata)
84 {
85 int status;
86 struct clk *clk_ptr;
87
88 if (IS_ERR(drvdata->clk_ptr_intclk)) {
89 dev_err(dev,
90 "%s: ERROR: intclk not initialized!\n", __func__);
91 return -EIO;
92 }
93
94 switch (drvdata->mclk_sel) {
95 case MCLK_SYSCLK:
96 clk_ptr = drvdata->clk_ptr_sysclk;
97 break;
98 case MCLK_ULPCLK:
99 clk_ptr = drvdata->clk_ptr_ulpclk;
100 break;
101 default:
102 return -EINVAL;
103 }
104
105 if (IS_ERR(clk_ptr)) {
106 dev_err(dev, "%s: ERROR: %s not initialized!\n", __func__,
107 get_mclk_str(drvdata->mclk_sel));
108 return -EIO;
109 }
110
111 status = clk_set_parent(drvdata->clk_ptr_intclk, clk_ptr);
112 if (status)
113 dev_err(dev,
114 "%s: ERROR: Setting intclk parent to %s failed (ret = %d)!",
115 __func__, get_mclk_str(drvdata->mclk_sel), status);
116 else
117 dev_dbg(dev,
118 "%s: intclk parent changed to %s.\n",
119 __func__, get_mclk_str(drvdata->mclk_sel));
120
121 return status;
122 }
123
124 /*
125 * Control-events
126 */
127
mclk_input_control_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)128 static int mclk_input_control_get(struct snd_kcontrol *kcontrol,
129 struct snd_ctl_elem_value *ucontrol)
130 {
131 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
132 struct mop500_ab8500_drvdata *drvdata =
133 snd_soc_card_get_drvdata(card);
134
135 ucontrol->value.enumerated.item[0] = drvdata->mclk_sel;
136
137 return 0;
138 }
139
mclk_input_control_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)140 static int mclk_input_control_put(struct snd_kcontrol *kcontrol,
141 struct snd_ctl_elem_value *ucontrol)
142 {
143 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
144 struct mop500_ab8500_drvdata *drvdata =
145 snd_soc_card_get_drvdata(card);
146 unsigned int val = ucontrol->value.enumerated.item[0];
147
148 if (val > (unsigned int)MCLK_ULPCLK)
149 return -EINVAL;
150 if (drvdata->mclk_sel == val)
151 return 0;
152
153 drvdata->mclk_sel = val;
154
155 return 1;
156 }
157
158 /*
159 * Controls
160 */
161
162 static struct snd_kcontrol_new mop500_ab8500_ctrls[] = {
163 SOC_ENUM_EXT("Master Clock Select",
164 soc_enum_mclk,
165 mclk_input_control_get, mclk_input_control_put),
166 SOC_DAPM_PIN_SWITCH("Headset Left"),
167 SOC_DAPM_PIN_SWITCH("Headset Right"),
168 SOC_DAPM_PIN_SWITCH("Earpiece"),
169 SOC_DAPM_PIN_SWITCH("Speaker Left"),
170 SOC_DAPM_PIN_SWITCH("Speaker Right"),
171 SOC_DAPM_PIN_SWITCH("LineOut Left"),
172 SOC_DAPM_PIN_SWITCH("LineOut Right"),
173 SOC_DAPM_PIN_SWITCH("Vibra 1"),
174 SOC_DAPM_PIN_SWITCH("Vibra 2"),
175 SOC_DAPM_PIN_SWITCH("Mic 1"),
176 SOC_DAPM_PIN_SWITCH("Mic 2"),
177 SOC_DAPM_PIN_SWITCH("LineIn Left"),
178 SOC_DAPM_PIN_SWITCH("LineIn Right"),
179 SOC_DAPM_PIN_SWITCH("DMic 1"),
180 SOC_DAPM_PIN_SWITCH("DMic 2"),
181 SOC_DAPM_PIN_SWITCH("DMic 3"),
182 SOC_DAPM_PIN_SWITCH("DMic 4"),
183 SOC_DAPM_PIN_SWITCH("DMic 5"),
184 SOC_DAPM_PIN_SWITCH("DMic 6"),
185 };
186
187 /* ASoC */
188
mop500_ab8500_startup(struct snd_pcm_substream * substream)189 static int mop500_ab8500_startup(struct snd_pcm_substream *substream)
190 {
191 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
192
193 /* Set audio-clock source */
194 return mop500_ab8500_set_mclk(rtd->card->dev,
195 snd_soc_card_get_drvdata(rtd->card));
196 }
197
mop500_ab8500_shutdown(struct snd_pcm_substream * substream)198 static void mop500_ab8500_shutdown(struct snd_pcm_substream *substream)
199 {
200 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
201 struct device *dev = rtd->card->dev;
202
203 dev_dbg(dev, "%s: Enter\n", __func__);
204
205 /* Reset slots configuration to default(s) */
206 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
207 tx_slots = DEF_TX_SLOTS;
208 else
209 rx_slots = DEF_RX_SLOTS;
210 }
211
mop500_ab8500_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params)212 static int mop500_ab8500_hw_params(struct snd_pcm_substream *substream,
213 struct snd_pcm_hw_params *params)
214 {
215 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
216 struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
217 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
218 struct device *dev = rtd->card->dev;
219 unsigned int fmt;
220 int channels, ret = 0, driver_mode, slots;
221 unsigned int sw_codec, sw_cpu;
222 bool is_playback;
223
224 dev_dbg(dev, "%s: Enter\n", __func__);
225
226 dev_dbg(dev, "%s: substream->pcm->name = %s\n"
227 "substream->pcm->id = %s.\n"
228 "substream->name = %s.\n"
229 "substream->number = %d.\n",
230 __func__,
231 substream->pcm->name,
232 substream->pcm->id,
233 substream->name,
234 substream->number);
235
236 /* Ensure configuration consistency between DAIs */
237 mutex_lock(&mop500_ab8500_params_lock);
238 if (mop500_ab8500_usage) {
239 if (mop500_ab8500_rate != params_rate(params) ||
240 mop500_ab8500_channels != params_channels(params)) {
241 mutex_unlock(&mop500_ab8500_params_lock);
242 return -EBUSY;
243 }
244 } else {
245 mop500_ab8500_rate = params_rate(params);
246 mop500_ab8500_channels = params_channels(params);
247 }
248 __set_bit(cpu_dai->id, &mop500_ab8500_usage);
249 mutex_unlock(&mop500_ab8500_params_lock);
250
251 channels = params_channels(params);
252
253 switch (params_format(params)) {
254 case SNDRV_PCM_FORMAT_S32_LE:
255 sw_cpu = 32;
256 break;
257
258 case SNDRV_PCM_FORMAT_S16_LE:
259 sw_cpu = 16;
260 break;
261
262 default:
263 return -EINVAL;
264 }
265
266 /* Setup codec depending on driver-mode */
267 if (channels == 8)
268 driver_mode = DRIVERMODE_CODEC_ONLY;
269 else
270 driver_mode = DRIVERMODE_NORMAL;
271 dev_dbg(dev, "%s: Driver-mode: %s.\n", __func__,
272 (driver_mode == DRIVERMODE_NORMAL) ? "NORMAL" : "CODEC_ONLY");
273
274 /* Setup format */
275
276 if (driver_mode == DRIVERMODE_NORMAL) {
277 fmt = SND_SOC_DAIFMT_DSP_A |
278 SND_SOC_DAIFMT_CBM_CFM |
279 SND_SOC_DAIFMT_NB_NF |
280 SND_SOC_DAIFMT_CONT;
281 } else {
282 fmt = SND_SOC_DAIFMT_DSP_A |
283 SND_SOC_DAIFMT_CBM_CFM |
284 SND_SOC_DAIFMT_NB_NF |
285 SND_SOC_DAIFMT_GATED;
286 }
287
288 ret = snd_soc_runtime_set_dai_fmt(rtd, fmt);
289 if (ret)
290 return ret;
291
292 /* Setup TDM-slots */
293
294 is_playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
295 switch (channels) {
296 case 1:
297 slots = 16;
298 tx_slots = (is_playback) ? TX_SLOT_MONO : 0;
299 rx_slots = (is_playback) ? 0 : RX_SLOT_MONO;
300 break;
301 case 2:
302 slots = 16;
303 tx_slots = (is_playback) ? TX_SLOT_STEREO : 0;
304 rx_slots = (is_playback) ? 0 : RX_SLOT_STEREO;
305 break;
306 case 8:
307 slots = 16;
308 tx_slots = (is_playback) ? TX_SLOT_8CH : 0;
309 rx_slots = (is_playback) ? 0 : RX_SLOT_8CH;
310 break;
311 default:
312 return -EINVAL;
313 }
314
315 if (driver_mode == DRIVERMODE_NORMAL)
316 sw_codec = sw_cpu;
317 else
318 sw_codec = 20;
319
320 dev_dbg(dev, "%s: CPU-DAI TDM: TX=0x%04X RX=0x%04x\n", __func__,
321 tx_slots, rx_slots);
322 ret = snd_soc_dai_set_tdm_slot(cpu_dai, tx_slots, rx_slots, slots,
323 sw_cpu);
324 if (ret)
325 return ret;
326
327 dev_dbg(dev, "%s: CODEC-DAI TDM: TX=0x%04X RX=0x%04x\n", __func__,
328 tx_slots, rx_slots);
329 ret = snd_soc_dai_set_tdm_slot(codec_dai, tx_slots, rx_slots, slots,
330 sw_codec);
331 if (ret)
332 return ret;
333
334 return 0;
335 }
336
mop500_ab8500_hw_free(struct snd_pcm_substream * substream)337 static int mop500_ab8500_hw_free(struct snd_pcm_substream *substream)
338 {
339 struct snd_soc_pcm_runtime *rtd = snd_soc_substream_to_rtd(substream);
340 struct snd_soc_dai *cpu_dai = snd_soc_rtd_to_cpu(rtd, 0);
341
342 mutex_lock(&mop500_ab8500_params_lock);
343 __clear_bit(cpu_dai->id, &mop500_ab8500_usage);
344 mutex_unlock(&mop500_ab8500_params_lock);
345
346 return 0;
347 }
348
349 const struct snd_soc_ops mop500_ab8500_ops[] = {
350 {
351 .hw_params = mop500_ab8500_hw_params,
352 .hw_free = mop500_ab8500_hw_free,
353 .startup = mop500_ab8500_startup,
354 .shutdown = mop500_ab8500_shutdown,
355 }
356 };
357
mop500_ab8500_machine_init(struct snd_soc_pcm_runtime * rtd)358 int mop500_ab8500_machine_init(struct snd_soc_pcm_runtime *rtd)
359 {
360 struct snd_soc_dapm_context *dapm = &rtd->card->dapm;
361 struct device *dev = rtd->card->dev;
362 struct mop500_ab8500_drvdata *drvdata;
363 int ret;
364
365 dev_dbg(dev, "%s Enter.\n", __func__);
366
367 /* Create driver private-data struct */
368 drvdata = devm_kzalloc(dev, sizeof(struct mop500_ab8500_drvdata),
369 GFP_KERNEL);
370
371 if (!drvdata)
372 return -ENOMEM;
373
374 snd_soc_card_set_drvdata(rtd->card, drvdata);
375
376 /* Setup clocks */
377
378 drvdata->clk_ptr_sysclk = clk_get(dev, "sysclk");
379 if (IS_ERR(drvdata->clk_ptr_sysclk))
380 dev_warn(dev, "%s: WARNING: clk_get failed for 'sysclk'!\n",
381 __func__);
382 drvdata->clk_ptr_ulpclk = clk_get(dev, "ulpclk");
383 if (IS_ERR(drvdata->clk_ptr_ulpclk))
384 dev_warn(dev, "%s: WARNING: clk_get failed for 'ulpclk'!\n",
385 __func__);
386 drvdata->clk_ptr_intclk = clk_get(dev, "intclk");
387 if (IS_ERR(drvdata->clk_ptr_intclk))
388 dev_warn(dev, "%s: WARNING: clk_get failed for 'intclk'!\n",
389 __func__);
390
391 /* Set intclk default parent to ulpclk */
392 drvdata->mclk_sel = MCLK_ULPCLK;
393 ret = mop500_ab8500_set_mclk(dev, drvdata);
394 if (ret < 0)
395 dev_warn(dev, "%s: WARNING: mop500_ab8500_set_mclk!\n",
396 __func__);
397
398 drvdata->mclk_sel = MCLK_ULPCLK;
399
400 /* Add controls */
401 ret = snd_soc_add_card_controls(rtd->card, mop500_ab8500_ctrls,
402 ARRAY_SIZE(mop500_ab8500_ctrls));
403 if (ret < 0) {
404 pr_err("%s: Failed to add machine-controls (%d)!\n",
405 __func__, ret);
406 return ret;
407 }
408
409 ret = snd_soc_dapm_disable_pin(dapm, "Earpiece");
410 ret |= snd_soc_dapm_disable_pin(dapm, "Speaker Left");
411 ret |= snd_soc_dapm_disable_pin(dapm, "Speaker Right");
412 ret |= snd_soc_dapm_disable_pin(dapm, "LineOut Left");
413 ret |= snd_soc_dapm_disable_pin(dapm, "LineOut Right");
414 ret |= snd_soc_dapm_disable_pin(dapm, "Vibra 1");
415 ret |= snd_soc_dapm_disable_pin(dapm, "Vibra 2");
416 ret |= snd_soc_dapm_disable_pin(dapm, "Mic 1");
417 ret |= snd_soc_dapm_disable_pin(dapm, "Mic 2");
418 ret |= snd_soc_dapm_disable_pin(dapm, "LineIn Left");
419 ret |= snd_soc_dapm_disable_pin(dapm, "LineIn Right");
420 ret |= snd_soc_dapm_disable_pin(dapm, "DMic 1");
421 ret |= snd_soc_dapm_disable_pin(dapm, "DMic 2");
422 ret |= snd_soc_dapm_disable_pin(dapm, "DMic 3");
423 ret |= snd_soc_dapm_disable_pin(dapm, "DMic 4");
424 ret |= snd_soc_dapm_disable_pin(dapm, "DMic 5");
425 ret |= snd_soc_dapm_disable_pin(dapm, "DMic 6");
426
427 return ret;
428 }
429
mop500_ab8500_remove(struct snd_soc_card * card)430 void mop500_ab8500_remove(struct snd_soc_card *card)
431 {
432 struct mop500_ab8500_drvdata *drvdata = snd_soc_card_get_drvdata(card);
433
434 clk_put(drvdata->clk_ptr_sysclk);
435 clk_put(drvdata->clk_ptr_ulpclk);
436 clk_put(drvdata->clk_ptr_intclk);
437
438 snd_soc_card_set_drvdata(card, drvdata);
439 }
440