wtm.c

  1// SPDX-License-Identifier: GPL-2.0-or-later
  2/*
  3 *	ALSA driver for ICEnsemble VT1724 (Envy24HT)
  4 *
  5 *	Lowlevel functions for Ego Sys Waveterminal 192M
  6 *
  7 *		Copyright (c) 2006 Guedez Clement <klem.dev@gmail.com>
  8 *		Some functions are taken from the Prodigy192 driver
  9 *		source
 10 */
 11
 12
 13
 14#include <linux/delay.h>
 15#include <linux/interrupt.h>
 16#include <linux/init.h>
 17#include <sound/core.h>
 18#include <sound/tlv.h>
 19#include <linux/slab.h>
 20
 21#include "ice1712.h"
 22#include "envy24ht.h"
 23#include "wtm.h"
 24#include "stac946x.h"
 25
 26struct wtm_spec {
 27	/* rate change needs atomic mute/unmute of all dacs*/
 28	struct mutex mute_mutex;
 29};
 30
 31
 32/*
 33 *	2*ADC 6*DAC no1 ringbuffer r/w on i2c bus
 34 */
 35static inline void stac9460_put(struct snd_ice1712 *ice, int reg,
 36						unsigned char val)
 37{
 38	snd_vt1724_write_i2c(ice, STAC9460_I2C_ADDR, reg, val);
 39}
 40
 41static inline unsigned char stac9460_get(struct snd_ice1712 *ice, int reg)
 42{
 43	return snd_vt1724_read_i2c(ice, STAC9460_I2C_ADDR, reg);
 44}
 45
 46/*
 47 *	2*ADC 2*DAC no2 ringbuffer r/w on i2c bus
 48 */
 49static inline void stac9460_2_put(struct snd_ice1712 *ice, int reg,
 50						unsigned char val)
 51{
 52	snd_vt1724_write_i2c(ice, STAC9460_2_I2C_ADDR, reg, val);
 53}
 54
 55static inline unsigned char stac9460_2_get(struct snd_ice1712 *ice, int reg)
 56{
 57	return snd_vt1724_read_i2c(ice, STAC9460_2_I2C_ADDR, reg);
 58}
 59
 60
 61/*
 62 *	DAC mute control
 63 */
 64static void stac9460_dac_mute_all(struct snd_ice1712 *ice, unsigned char mute,
 65				unsigned short int *change_mask)
 66{
 67	unsigned char new, old;
 68	int id, idx, change;
 69
 70	/*stac9460 1*/
 71	for (id = 0; id < 7; id++) {
 72		if (*change_mask & (0x01 << id)) {
 73			if (id == 0)
 74				idx = STAC946X_MASTER_VOLUME;
 75			else
 76				idx = STAC946X_LF_VOLUME - 1 + id;
 77			old = stac9460_get(ice, idx);
 78			new = (~mute << 7 & 0x80) | (old & ~0x80);
 79			change = (new != old);
 80			if (change) {
 81				stac9460_put(ice, idx, new);
 82				*change_mask = *change_mask | (0x01 << id);
 83			} else {
 84				*change_mask = *change_mask & ~(0x01 << id);
 85			}
 86		}
 87	}
 88
 89	/*stac9460 2*/
 90	for (id = 0; id < 3; id++) {
 91		if (*change_mask & (0x01 << (id + 7))) {
 92			if (id == 0)
 93				idx = STAC946X_MASTER_VOLUME;
 94			else
 95				idx = STAC946X_LF_VOLUME - 1 + id;
 96			old = stac9460_2_get(ice, idx);
 97			new = (~mute << 7 & 0x80) | (old & ~0x80);
 98			change = (new != old);
 99			if (change) {
100				stac9460_2_put(ice, idx, new);
101				*change_mask = *change_mask | (0x01 << id);
102			} else {
103				*change_mask = *change_mask & ~(0x01 << id);
104			}
105		}
106	}
107}
108
109
110
111#define stac9460_dac_mute_info		snd_ctl_boolean_mono_info
112
113static int stac9460_dac_mute_get(struct snd_kcontrol *kcontrol,
114				struct snd_ctl_elem_value *ucontrol)
115{
116	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
117	struct wtm_spec *spec = ice->spec;
118	unsigned char val;
119	int idx, id;
120
121	guard(mutex)(&spec->mute_mutex);
122
123	if (kcontrol->private_value) {
124		idx = STAC946X_MASTER_VOLUME;
125		id = 0;
126	} else {
127		id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
128		idx = id + STAC946X_LF_VOLUME;
129	}
130	if (id < 6)
131		val = stac9460_get(ice, idx);
132	else
133		val = stac9460_2_get(ice, idx - 6);
134	ucontrol->value.integer.value[0] = (~val >> 7) & 0x1;
135
136	return 0;
137}
138
139static int stac9460_dac_mute_put(struct snd_kcontrol *kcontrol,
140				struct snd_ctl_elem_value *ucontrol)
141{
142	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
143	unsigned char new, old;
144	int id, idx;
145	int change;
146
147	if (kcontrol->private_value) {
148		idx = STAC946X_MASTER_VOLUME;
149		old = stac9460_get(ice, idx);
150		new = (~ucontrol->value.integer.value[0] << 7 & 0x80) |
151							(old & ~0x80);
152		change = (new != old);
153		if (change) {
154			stac9460_put(ice, idx, new);
155			stac9460_2_put(ice, idx, new);
156		}
157	} else {
158		id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
159		idx = id + STAC946X_LF_VOLUME;
160		if (id < 6)
161			old = stac9460_get(ice, idx);
162		else
163			old = stac9460_2_get(ice, idx - 6);
164		new = (~ucontrol->value.integer.value[0] << 7 & 0x80) |
165							(old & ~0x80);
166		change = (new != old);
167		if (change) {
168			if (id < 6)
169				stac9460_put(ice, idx, new);
170			else
171				stac9460_2_put(ice, idx - 6, new);
172		}
173	}
174	return change;
175}
176
177/*
178 * 	DAC volume attenuation mixer control
179 */
180static int stac9460_dac_vol_info(struct snd_kcontrol *kcontrol,
181				struct snd_ctl_elem_info *uinfo)
182{
183	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
184	uinfo->count = 1;
185	uinfo->value.integer.min = 0;			/* mute */
186	uinfo->value.integer.max = 0x7f;		/* 0dB */
187	return 0;
188}
189
190static int stac9460_dac_vol_get(struct snd_kcontrol *kcontrol,
191				struct snd_ctl_elem_value *ucontrol)
192{
193	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
194	int idx, id;
195	unsigned char vol;
196
197	if (kcontrol->private_value) {
198		idx = STAC946X_MASTER_VOLUME;
199		id = 0;
200	} else {
201		id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
202		idx = id + STAC946X_LF_VOLUME;
203	}
204	if (id < 6)
205		vol = stac9460_get(ice, idx) & 0x7f;
206	else
207		vol = stac9460_2_get(ice, idx - 6) & 0x7f;
208	ucontrol->value.integer.value[0] = 0x7f - vol;
209	return 0;
210}
211
212static int stac9460_dac_vol_put(struct snd_kcontrol *kcontrol,
213				struct snd_ctl_elem_value *ucontrol)
214{
215	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
216	int idx, id;
217	unsigned char tmp, ovol, nvol;
218	int change;
219
220	if (kcontrol->private_value) {
221		idx = STAC946X_MASTER_VOLUME;
222		nvol = ucontrol->value.integer.value[0] & 0x7f;
223		tmp = stac9460_get(ice, idx);
224		ovol = 0x7f - (tmp & 0x7f);
225		change = (ovol != nvol);
226		if (change) {
227			stac9460_put(ice, idx, (0x7f - nvol) | (tmp & 0x80));
228			stac9460_2_put(ice, idx, (0x7f - nvol) | (tmp & 0x80));
229		}
230	} else {
231		id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
232		idx = id + STAC946X_LF_VOLUME;
233		nvol = ucontrol->value.integer.value[0] & 0x7f;
234		if (id < 6)
235			tmp = stac9460_get(ice, idx);
236		else
237			tmp = stac9460_2_get(ice, idx - 6);
238		ovol = 0x7f - (tmp & 0x7f);
239		change = (ovol != nvol);
240		if (change) {
241			if (id < 6)
242				stac9460_put(ice, idx, (0x7f - nvol) |
243							(tmp & 0x80));
244			else
245				stac9460_2_put(ice, idx-6, (0x7f - nvol) |
246							(tmp & 0x80));
247		}
248	}
249	return change;
250}
251
252/*
253 * ADC mute control
254 */
255#define stac9460_adc_mute_info		snd_ctl_boolean_stereo_info
256
257static int stac9460_adc_mute_get(struct snd_kcontrol *kcontrol,
258				struct snd_ctl_elem_value *ucontrol)
259{
260	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
261	unsigned char val;
262	int i, id;
263
264	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
265	if (id == 0) {
266		for (i = 0; i < 2; ++i) {
267			val = stac9460_get(ice, STAC946X_MIC_L_VOLUME + i);
268			ucontrol->value.integer.value[i] = ~val>>7 & 0x1;
269		}
270	} else {
271		for (i = 0; i < 2; ++i) {
272			val = stac9460_2_get(ice, STAC946X_MIC_L_VOLUME + i);
273			ucontrol->value.integer.value[i] = ~val>>7 & 0x1;
274		}
275	}
276	return 0;
277}
278
279static int stac9460_adc_mute_put(struct snd_kcontrol *kcontrol,
280				struct snd_ctl_elem_value *ucontrol)
281{
282	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
283	unsigned char new, old;
284	int i, reg, id;
285	int change;
286
287	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
288	if (id == 0) {
289		for (i = 0; i < 2; ++i) {
290			reg = STAC946X_MIC_L_VOLUME + i;
291			old = stac9460_get(ice, reg);
292			new = (~ucontrol->value.integer.value[i]<<7&0x80) |
293								(old&~0x80);
294			change = (new != old);
295			if (change)
296				stac9460_put(ice, reg, new);
297		}
298	} else {
299		for (i = 0; i < 2; ++i) {
300			reg = STAC946X_MIC_L_VOLUME + i;
301			old = stac9460_2_get(ice, reg);
302			new = (~ucontrol->value.integer.value[i]<<7&0x80) |
303								(old&~0x80);
304			change = (new != old);
305			if (change)
306				stac9460_2_put(ice, reg, new);
307		}
308	}
309	return change;
310}
311
312/*
313 *ADC gain mixer control
314 */
315static int stac9460_adc_vol_info(struct snd_kcontrol *kcontrol,
316				struct snd_ctl_elem_info *uinfo)
317{
318	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
319	uinfo->count = 2;
320	uinfo->value.integer.min = 0;		/* 0dB */
321	uinfo->value.integer.max = 0x0f;	/* 22.5dB */
322	return 0;
323}
324
325static int stac9460_adc_vol_get(struct snd_kcontrol *kcontrol,
326				struct snd_ctl_elem_value *ucontrol)
327{
328	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
329	int i, reg, id;
330	unsigned char vol;
331
332	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
333	if (id == 0) {
334		for (i = 0; i < 2; ++i) {
335			reg = STAC946X_MIC_L_VOLUME + i;
336			vol = stac9460_get(ice, reg) & 0x0f;
337			ucontrol->value.integer.value[i] = 0x0f - vol;
338		}
339	} else {
340		for (i = 0; i < 2; ++i) {
341			reg = STAC946X_MIC_L_VOLUME + i;
342			vol = stac9460_2_get(ice, reg) & 0x0f;
343			ucontrol->value.integer.value[i] = 0x0f - vol;
344		}
345	}
346	return 0;
347}
348
349static int stac9460_adc_vol_put(struct snd_kcontrol *kcontrol,
350				struct snd_ctl_elem_value *ucontrol)
351{
352	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
353	int i, reg, id;
354	unsigned char ovol, nvol;
355	int change;
356
357	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
358	if (id == 0) {
359		for (i = 0; i < 2; ++i) {
360			reg = STAC946X_MIC_L_VOLUME + i;
361			nvol = ucontrol->value.integer.value[i] & 0x0f;
362			ovol = 0x0f - stac9460_get(ice, reg);
363			change = ((ovol & 0x0f) != nvol);
364			if (change)
365				stac9460_put(ice, reg, (0x0f - nvol) |
366							(ovol & ~0x0f));
367		}
368	} else {
369		for (i = 0; i < 2; ++i) {
370			reg = STAC946X_MIC_L_VOLUME + i;
371			nvol = ucontrol->value.integer.value[i] & 0x0f;
372			ovol = 0x0f - stac9460_2_get(ice, reg);
373			change = ((ovol & 0x0f) != nvol);
374			if (change)
375				stac9460_2_put(ice, reg, (0x0f - nvol) |
376							(ovol & ~0x0f));
377		}
378	}
379	return change;
380}
381
382/*
383 * MIC / LINE switch fonction
384 */
385static int stac9460_mic_sw_info(struct snd_kcontrol *kcontrol,
386				struct snd_ctl_elem_info *uinfo)
387{
388	static const char * const texts[2] = { "Line In", "Mic" };
389
390	return snd_ctl_enum_info(uinfo, 1, 2, texts);
391}
392
393
394static int stac9460_mic_sw_get(struct snd_kcontrol *kcontrol,
395				struct snd_ctl_elem_value *ucontrol)
396{
397	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
398	unsigned char val;
399	int id;
400
401	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
402	if (id == 0)
403		val = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
404	else
405		val = stac9460_2_get(ice, STAC946X_GENERAL_PURPOSE);
406	ucontrol->value.enumerated.item[0] = (val >> 7) & 0x1;
407	return 0;
408}
409
410static int stac9460_mic_sw_put(struct snd_kcontrol *kcontrol,
411				struct snd_ctl_elem_value *ucontrol)
412{
413	struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
414	unsigned char new, old;
415	int change, id;
416
417	id = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id);
418	if (id == 0)
419		old = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
420	else
421		old = stac9460_2_get(ice, STAC946X_GENERAL_PURPOSE);
422	new = (ucontrol->value.enumerated.item[0] << 7 & 0x80) | (old & ~0x80);
423	change = (new != old);
424	if (change) {
425		if (id == 0)
426			stac9460_put(ice, STAC946X_GENERAL_PURPOSE, new);
427		else
428			stac9460_2_put(ice, STAC946X_GENERAL_PURPOSE, new);
429	}
430	return change;
431}
432
433
434/*
435 * Handler for setting correct codec rate - called when rate change is detected
436 */
437static void stac9460_set_rate_val(struct snd_ice1712 *ice, unsigned int rate)
438{
439	unsigned char old, new;
440	unsigned short int changed;
441	struct wtm_spec *spec = ice->spec;
442
443	if (rate == 0)  /* no hint - S/PDIF input is master, simply return */
444		return;
445	else if (rate <= 48000)
446		new = 0x08;     /* 256x, base rate mode */
447	else if (rate <= 96000)
448		new = 0x11;     /* 256x, mid rate mode */
449	else
450		new = 0x12;     /* 128x, high rate mode */
451
452	old = stac9460_get(ice, STAC946X_MASTER_CLOCKING);
453	if (old == new)
454		return;
455	/* change detected, setting master clock, muting first */
456	/* due to possible conflicts with mute controls - mutexing */
457	guard(mutex)(&spec->mute_mutex);
458	/* we have to remember current mute status for each DAC */
459	changed = 0xFFFF;
460	stac9460_dac_mute_all(ice, 0, &changed);
461	/*printk(KERN_DEBUG "Rate change: %d, new MC: 0x%02x\n", rate, new);*/
462	stac9460_put(ice, STAC946X_MASTER_CLOCKING, new);
463	stac9460_2_put(ice, STAC946X_MASTER_CLOCKING, new);
464	udelay(10);
465	/* unmuting - only originally unmuted dacs -
466	* i.e. those changed when muting */
467	stac9460_dac_mute_all(ice, 1, &changed);
468}
469
470
471/*Limits value in dB for fader*/
472static const DECLARE_TLV_DB_SCALE(db_scale_dac, -19125, 75, 0);
473static const DECLARE_TLV_DB_SCALE(db_scale_adc, 0, 150, 0);
474
475/*
476 * Control tabs
477 */
478static const struct snd_kcontrol_new stac9640_controls[] = {
479	{
480		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
481		.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
482			    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
483		.name = "Master Playback Switch",
484		.info = stac9460_dac_mute_info,
485		.get = stac9460_dac_mute_get,
486		.put = stac9460_dac_mute_put,
487		.private_value = 1,
488		.tlv = { .p = db_scale_dac }
489	},
490	{
491		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
492		.name = "Master Playback Volume",
493		.info = stac9460_dac_vol_info,
494		.get = stac9460_dac_vol_get,
495		.put = stac9460_dac_vol_put,
496		.private_value = 1,
497	},
498	{
499		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
500		.name = "MIC/Line Input Enum",
501		.count = 2,
502		.info = stac9460_mic_sw_info,
503		.get = stac9460_mic_sw_get,
504		.put = stac9460_mic_sw_put,
505
506	},
507	{
508		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
509		.name = "DAC Switch",
510		.count = 8,
511		.info = stac9460_dac_mute_info,
512		.get = stac9460_dac_mute_get,
513		.put = stac9460_dac_mute_put,
514	},
515	{
516		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
517		.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
518			    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
519
520		.name = "DAC Volume",
521		.count = 8,
522		.info = stac9460_dac_vol_info,
523		.get = stac9460_dac_vol_get,
524		.put = stac9460_dac_vol_put,
525		.tlv = { .p = db_scale_dac }
526	},
527	{
528		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
529		.name = "ADC Switch",
530		.count = 2,
531		.info = stac9460_adc_mute_info,
532		.get = stac9460_adc_mute_get,
533		.put = stac9460_adc_mute_put,
534	},
535	{
536		.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
537		.access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
538			    SNDRV_CTL_ELEM_ACCESS_TLV_READ),
539
540		.name = "ADC Volume",
541		.count = 2,
542		.info = stac9460_adc_vol_info,
543		.get = stac9460_adc_vol_get,
544		.put = stac9460_adc_vol_put,
545		.tlv = { .p = db_scale_adc }
546	}
547};
548
549
550
551/*INIT*/
552static int wtm_add_controls(struct snd_ice1712 *ice)
553{
554	unsigned int i;
555	int err;
556
557	for (i = 0; i < ARRAY_SIZE(stac9640_controls); i++) {
558		err = snd_ctl_add(ice->card,
559				snd_ctl_new1(&stac9640_controls[i], ice));
560		if (err < 0)
561			return err;
562	}
563	return 0;
564}
565
566static int wtm_init(struct snd_ice1712 *ice)
567{
568	static const unsigned short stac_inits_wtm[] = {
569		STAC946X_RESET, 0,
570		STAC946X_MASTER_CLOCKING, 0x11,
571		(unsigned short)-1
572	};
573	const unsigned short *p;
574	struct wtm_spec *spec;
575
576	/*WTM 192M*/
577	ice->num_total_dacs = 8;
578	ice->num_total_adcs = 4;
579	ice->force_rdma1 = 1;
580
581	/*init mutex for dac mute conflict*/
582	spec = kzalloc(sizeof(*spec), GFP_KERNEL);
583	if (!spec)
584		return -ENOMEM;
585	ice->spec = spec;
586	mutex_init(&spec->mute_mutex);
587
588
589	/*initialize codec*/
590	p = stac_inits_wtm;
591	for (; *p != (unsigned short)-1; p += 2) {
592		stac9460_put(ice, p[0], p[1]);
593		stac9460_2_put(ice, p[0], p[1]);
594	}
595	ice->gpio.set_pro_rate = stac9460_set_rate_val;
596	return 0;
597}
598
599
600static const unsigned char wtm_eeprom[] = {
601	[ICE_EEP2_SYSCONF]      = 0x67, /*SYSCONF: clock 192KHz, mpu401,
602							4ADC, 8DAC */
603	[ICE_EEP2_ACLINK]       = 0x80, /* ACLINK : I2S */
604	[ICE_EEP2_I2S]          = 0xf8, /* I2S: vol; 96k, 24bit, 192k */
605	[ICE_EEP2_SPDIF]        = 0xc1, /*SPDIF: out-en, spidf ext out*/
606	[ICE_EEP2_GPIO_DIR]     = 0x9f,
607	[ICE_EEP2_GPIO_DIR1]    = 0xff,
608	[ICE_EEP2_GPIO_DIR2]    = 0x7f,
609	[ICE_EEP2_GPIO_MASK]    = 0x9f,
610	[ICE_EEP2_GPIO_MASK1]   = 0xff,
611	[ICE_EEP2_GPIO_MASK2]   = 0x7f,
612	[ICE_EEP2_GPIO_STATE]   = 0x16,
613	[ICE_EEP2_GPIO_STATE1]  = 0x80,
614	[ICE_EEP2_GPIO_STATE2]  = 0x00,
615};
616
617
618/*entry point*/
619struct snd_ice1712_card_info snd_vt1724_wtm_cards[] = {
620	{
621		.subvendor = VT1724_SUBDEVICE_WTM,
622		.name = "ESI Waveterminal 192M",
623		.model = "WT192M",
624		.chip_init = wtm_init,
625		.build_controls = wtm_add_controls,
626		.eeprom_size = sizeof(wtm_eeprom),
627		.eeprom_data = wtm_eeprom,
628	},
629	{} /*terminator*/
630};