1/*
2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Christian K��nig.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Christian K��nig
25 *          Rafa�� Mi��ecki
26 */
27#include <linux/hdmi.h>
28
29#include <drm/drm_edid.h>
30#include <drm/radeon_drm.h>
31#include "evergreen_hdmi.h"
32#include "radeon.h"
33#include "radeon_asic.h"
34#include "radeon_audio.h"
35#include "evergreend.h"
36#include "atom.h"
37
38/* enable the audio stream */
39void dce4_audio_enable(struct radeon_device *rdev,
40			      struct r600_audio_pin *pin,
41			      u8 enable_mask)
42{
43	u32 tmp = RREG32(AZ_HOT_PLUG_CONTROL);
44
45	if (!pin)
46		return;
47
48	if (enable_mask) {
49		tmp |= AUDIO_ENABLED;
50		if (enable_mask & 1)
51			tmp |= PIN0_AUDIO_ENABLED;
52		if (enable_mask & 2)
53			tmp |= PIN1_AUDIO_ENABLED;
54		if (enable_mask & 4)
55			tmp |= PIN2_AUDIO_ENABLED;
56		if (enable_mask & 8)
57			tmp |= PIN3_AUDIO_ENABLED;
58	} else {
59		tmp &= ~(AUDIO_ENABLED |
60			 PIN0_AUDIO_ENABLED |
61			 PIN1_AUDIO_ENABLED |
62			 PIN2_AUDIO_ENABLED |
63			 PIN3_AUDIO_ENABLED);
64	}
65
66	WREG32(AZ_HOT_PLUG_CONTROL, tmp);
67}
68
69void evergreen_hdmi_update_acr(struct drm_encoder *encoder, long offset,
70	const struct radeon_hdmi_acr *acr)
71{
72	struct drm_device *dev = encoder->dev;
73	struct radeon_device *rdev = dev->dev_private;
74	int bpc = 8;
75
76	if (encoder->crtc) {
77		struct radeon_crtc *radeon_crtc = to_radeon_crtc(encoder->crtc);
78		bpc = radeon_crtc->bpc;
79	}
80
81	if (bpc > 8)
82		WREG32(HDMI_ACR_PACKET_CONTROL + offset,
83			HDMI_ACR_AUTO_SEND);	/* allow hw to sent ACR packets when required */
84	else
85		WREG32(HDMI_ACR_PACKET_CONTROL + offset,
86			HDMI_ACR_SOURCE |		/* select SW CTS value */
87			HDMI_ACR_AUTO_SEND);	/* allow hw to sent ACR packets when required */
88
89	WREG32(HDMI_ACR_32_0 + offset, HDMI_ACR_CTS_32(acr->cts_32khz));
90	WREG32(HDMI_ACR_32_1 + offset, acr->n_32khz);
91
92	WREG32(HDMI_ACR_44_0 + offset, HDMI_ACR_CTS_44(acr->cts_44_1khz));
93	WREG32(HDMI_ACR_44_1 + offset, acr->n_44_1khz);
94
95	WREG32(HDMI_ACR_48_0 + offset, HDMI_ACR_CTS_48(acr->cts_48khz));
96	WREG32(HDMI_ACR_48_1 + offset, acr->n_48khz);
97}
98
99void dce4_afmt_write_latency_fields(struct drm_encoder *encoder,
100		struct drm_connector *connector, struct drm_display_mode *mode)
101{
102	struct radeon_device *rdev = encoder->dev->dev_private;
103	u32 tmp = 0;
104
105	if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
106		if (connector->latency_present[1])
107			tmp = VIDEO_LIPSYNC(connector->video_latency[1]) |
108				AUDIO_LIPSYNC(connector->audio_latency[1]);
109		else
110			tmp = VIDEO_LIPSYNC(255) | AUDIO_LIPSYNC(255);
111	} else {
112		if (connector->latency_present[0])
113			tmp = VIDEO_LIPSYNC(connector->video_latency[0]) |
114				AUDIO_LIPSYNC(connector->audio_latency[0]);
115		else
116			tmp = VIDEO_LIPSYNC(255) | AUDIO_LIPSYNC(255);
117	}
118	WREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_RESPONSE_LIPSYNC, tmp);
119}
120
121void dce4_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
122	u8 *sadb, int sad_count)
123{
124	struct radeon_device *rdev = encoder->dev->dev_private;
125	u32 tmp;
126
127	/* program the speaker allocation */
128	tmp = RREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER);
129	tmp &= ~(DP_CONNECTION | SPEAKER_ALLOCATION_MASK);
130	/* set HDMI mode */
131	tmp |= HDMI_CONNECTION;
132	if (sad_count)
133		tmp |= SPEAKER_ALLOCATION(sadb[0]);
134	else
135		tmp |= SPEAKER_ALLOCATION(5); /* stereo */
136	WREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER, tmp);
137}
138
139void dce4_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
140	u8 *sadb, int sad_count)
141{
142	struct radeon_device *rdev = encoder->dev->dev_private;
143	u32 tmp;
144
145	/* program the speaker allocation */
146	tmp = RREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER);
147	tmp &= ~(HDMI_CONNECTION | SPEAKER_ALLOCATION_MASK);
148	/* set DP mode */
149	tmp |= DP_CONNECTION;
150	if (sad_count)
151		tmp |= SPEAKER_ALLOCATION(sadb[0]);
152	else
153		tmp |= SPEAKER_ALLOCATION(5); /* stereo */
154	WREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER, tmp);
155}
156
157void evergreen_hdmi_write_sad_regs(struct drm_encoder *encoder,
158	struct cea_sad *sads, int sad_count)
159{
160	int i;
161	struct radeon_device *rdev = encoder->dev->dev_private;
162	static const u16 eld_reg_to_type[][2] = {
163		{ AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR0, HDMI_AUDIO_CODING_TYPE_PCM },
164		{ AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR1, HDMI_AUDIO_CODING_TYPE_AC3 },
165		{ AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR2, HDMI_AUDIO_CODING_TYPE_MPEG1 },
166		{ AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR3, HDMI_AUDIO_CODING_TYPE_MP3 },
167		{ AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR4, HDMI_AUDIO_CODING_TYPE_MPEG2 },
168		{ AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR5, HDMI_AUDIO_CODING_TYPE_AAC_LC },
169		{ AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR6, HDMI_AUDIO_CODING_TYPE_DTS },
170		{ AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR7, HDMI_AUDIO_CODING_TYPE_ATRAC },
171		{ AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR9, HDMI_AUDIO_CODING_TYPE_EAC3 },
172		{ AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR10, HDMI_AUDIO_CODING_TYPE_DTS_HD },
173		{ AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR11, HDMI_AUDIO_CODING_TYPE_MLP },
174		{ AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO },
175	};
176
177	for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
178		u32 value = 0;
179		u8 stereo_freqs = 0;
180		int max_channels = -1;
181		int j;
182
183		for (j = 0; j < sad_count; j++) {
184			struct cea_sad *sad = &sads[j];
185
186			if (sad->format == eld_reg_to_type[i][1]) {
187				if (sad->channels > max_channels) {
188					value = MAX_CHANNELS(sad->channels) |
189						DESCRIPTOR_BYTE_2(sad->byte2) |
190						SUPPORTED_FREQUENCIES(sad->freq);
191					max_channels = sad->channels;
192				}
193
194				if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM)
195					stereo_freqs |= sad->freq;
196				else
197					break;
198			}
199		}
200
201		value |= SUPPORTED_FREQUENCIES_STEREO(stereo_freqs);
202
203		WREG32_ENDPOINT(0, eld_reg_to_type[i][0], value);
204	}
205}
206
207/*
208 * build a AVI Info Frame
209 */
210void evergreen_set_avi_packet(struct radeon_device *rdev, u32 offset,
211			      unsigned char *buffer, size_t size)
212{
213	uint8_t *frame = buffer + 3;
214
215	WREG32(AFMT_AVI_INFO0 + offset,
216		frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
217	WREG32(AFMT_AVI_INFO1 + offset,
218		frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24));
219	WREG32(AFMT_AVI_INFO2 + offset,
220		frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24));
221	WREG32(AFMT_AVI_INFO3 + offset,
222		frame[0xC] | (frame[0xD] << 8) | (buffer[1] << 24));
223
224	WREG32_P(HDMI_INFOFRAME_CONTROL1 + offset,
225		 HDMI_AVI_INFO_LINE(2),	/* anything other than 0 */
226		 ~HDMI_AVI_INFO_LINE_MASK);
227}
228
229void dce4_hdmi_audio_set_dto(struct radeon_device *rdev,
230	struct radeon_crtc *crtc, unsigned int clock)
231{
232	unsigned int max_ratio = clock / 24000;
233	u32 dto_phase;
234	u32 wallclock_ratio;
235	u32 value;
236
237	if (max_ratio >= 8) {
238		dto_phase = 192 * 1000;
239		wallclock_ratio = 3;
240	} else if (max_ratio >= 4) {
241		dto_phase = 96 * 1000;
242		wallclock_ratio = 2;
243	} else if (max_ratio >= 2) {
244		dto_phase = 48 * 1000;
245		wallclock_ratio = 1;
246	} else {
247		dto_phase = 24 * 1000;
248		wallclock_ratio = 0;
249	}
250
251	value = RREG32(DCCG_AUDIO_DTO0_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
252	value |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
253	value &= ~DCCG_AUDIO_DTO1_USE_512FBR_DTO;
254	WREG32(DCCG_AUDIO_DTO0_CNTL, value);
255
256	/* Two dtos; generally use dto0 for HDMI */
257	value = 0;
258
259	if (crtc)
260		value |= DCCG_AUDIO_DTO0_SOURCE_SEL(crtc->crtc_id);
261
262	WREG32(DCCG_AUDIO_DTO_SOURCE, value);
263
264	/* Express [24MHz / target pixel clock] as an exact rational
265	 * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE
266	 * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
267	 */
268	WREG32(DCCG_AUDIO_DTO0_PHASE, dto_phase);
269	WREG32(DCCG_AUDIO_DTO0_MODULE, clock);
270}
271
272void dce4_dp_audio_set_dto(struct radeon_device *rdev,
273			   struct radeon_crtc *crtc, unsigned int clock)
274{
275	u32 value;
276
277	value = RREG32(DCCG_AUDIO_DTO1_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
278	value |= DCCG_AUDIO_DTO1_USE_512FBR_DTO;
279	WREG32(DCCG_AUDIO_DTO1_CNTL, value);
280
281	/* Two dtos; generally use dto1 for DP */
282	value = 0;
283	value |= DCCG_AUDIO_DTO_SEL;
284
285	if (crtc)
286		value |= DCCG_AUDIO_DTO0_SOURCE_SEL(crtc->crtc_id);
287
288	WREG32(DCCG_AUDIO_DTO_SOURCE, value);
289
290	/* Express [24MHz / target pixel clock] as an exact rational
291	 * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE
292	 * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
293	 */
294	if (ASIC_IS_DCE41(rdev)) {
295		unsigned int div = (RREG32(DCE41_DENTIST_DISPCLK_CNTL) &
296			DENTIST_DPREFCLK_WDIVIDER_MASK) >>
297			DENTIST_DPREFCLK_WDIVIDER_SHIFT;
298		div = radeon_audio_decode_dfs_div(div);
299
300		if (div)
301			clock = 100 * clock / div;
302	}
303
304	WREG32(DCCG_AUDIO_DTO1_PHASE, 24000);
305	WREG32(DCCG_AUDIO_DTO1_MODULE, clock);
306}
307
308void dce4_set_vbi_packet(struct drm_encoder *encoder, u32 offset)
309{
310	struct drm_device *dev = encoder->dev;
311	struct radeon_device *rdev = dev->dev_private;
312
313	WREG32(HDMI_VBI_PACKET_CONTROL + offset,
314		HDMI_NULL_SEND |	/* send null packets when required */
315		HDMI_GC_SEND |		/* send general control packets */
316		HDMI_GC_CONT);		/* send general control packets every frame */
317}
318
319void dce4_hdmi_set_color_depth(struct drm_encoder *encoder, u32 offset, int bpc)
320{
321	struct drm_device *dev = encoder->dev;
322	struct radeon_device *rdev = dev->dev_private;
323	struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
324	uint32_t val;
325
326	val = RREG32(HDMI_CONTROL + offset);
327	val &= ~HDMI_DEEP_COLOR_ENABLE;
328	val &= ~HDMI_DEEP_COLOR_DEPTH_MASK;
329
330	switch (bpc) {
331		case 0:
332		case 6:
333		case 8:
334		case 16:
335		default:
336			DRM_DEBUG("%s: Disabling hdmi deep color for %d bpc.\n",
337					 connector->name, bpc);
338			break;
339		case 10:
340			val |= HDMI_DEEP_COLOR_ENABLE;
341			val |= HDMI_DEEP_COLOR_DEPTH(HDMI_30BIT_DEEP_COLOR);
342			DRM_DEBUG("%s: Enabling hdmi deep color 30 for 10 bpc.\n",
343					 connector->name);
344			break;
345		case 12:
346			val |= HDMI_DEEP_COLOR_ENABLE;
347			val |= HDMI_DEEP_COLOR_DEPTH(HDMI_36BIT_DEEP_COLOR);
348			DRM_DEBUG("%s: Enabling hdmi deep color 36 for 12 bpc.\n",
349					 connector->name);
350			break;
351	}
352
353	WREG32(HDMI_CONTROL + offset, val);
354}
355
356void dce4_set_audio_packet(struct drm_encoder *encoder, u32 offset)
357{
358	struct drm_device *dev = encoder->dev;
359	struct radeon_device *rdev = dev->dev_private;
360
361	WREG32(AFMT_INFOFRAME_CONTROL0 + offset,
362		AFMT_AUDIO_INFO_UPDATE); /* required for audio info values to be updated */
363
364	WREG32(AFMT_60958_0 + offset,
365		AFMT_60958_CS_CHANNEL_NUMBER_L(1));
366
367	WREG32(AFMT_60958_1 + offset,
368		AFMT_60958_CS_CHANNEL_NUMBER_R(2));
369
370	WREG32(AFMT_60958_2 + offset,
371		AFMT_60958_CS_CHANNEL_NUMBER_2(3) |
372		AFMT_60958_CS_CHANNEL_NUMBER_3(4) |
373		AFMT_60958_CS_CHANNEL_NUMBER_4(5) |
374		AFMT_60958_CS_CHANNEL_NUMBER_5(6) |
375		AFMT_60958_CS_CHANNEL_NUMBER_6(7) |
376		AFMT_60958_CS_CHANNEL_NUMBER_7(8));
377
378	WREG32(AFMT_AUDIO_PACKET_CONTROL2 + offset,
379		AFMT_AUDIO_CHANNEL_ENABLE(0xff));
380
381	WREG32(HDMI_AUDIO_PACKET_CONTROL + offset,
382	       HDMI_AUDIO_DELAY_EN(1) | /* set the default audio delay */
383	       HDMI_AUDIO_PACKETS_PER_LINE(3)); /* should be suffient for all audio modes and small enough for all hblanks */
384
385	/* allow 60958 channel status and send audio packets fields to be updated */
386	WREG32_OR(AFMT_AUDIO_PACKET_CONTROL + offset,
387		  AFMT_RESET_FIFO_WHEN_AUDIO_DIS | AFMT_60958_CS_UPDATE);
388}
389
390
391void dce4_set_mute(struct drm_encoder *encoder, u32 offset, bool mute)
392{
393	struct drm_device *dev = encoder->dev;
394	struct radeon_device *rdev = dev->dev_private;
395
396	if (mute)
397		WREG32_OR(HDMI_GC + offset, HDMI_GC_AVMUTE);
398	else
399		WREG32_AND(HDMI_GC + offset, ~HDMI_GC_AVMUTE);
400}
401
402void evergreen_hdmi_enable(struct drm_encoder *encoder, bool enable)
403{
404	struct drm_device *dev = encoder->dev;
405	struct radeon_device *rdev = dev->dev_private;
406	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
407	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
408
409	if (!dig || !dig->afmt)
410		return;
411
412	if (enable) {
413		struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
414
415		if (connector && drm_detect_monitor_audio(radeon_connector_edid(connector))) {
416			WREG32(HDMI_INFOFRAME_CONTROL0 + dig->afmt->offset,
417			       HDMI_AVI_INFO_SEND | /* enable AVI info frames */
418			       HDMI_AVI_INFO_CONT | /* required for audio info values to be updated */
419			       HDMI_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */
420			       HDMI_AUDIO_INFO_CONT); /* required for audio info values to be updated */
421			WREG32_OR(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
422				  AFMT_AUDIO_SAMPLE_SEND);
423		} else {
424			WREG32(HDMI_INFOFRAME_CONTROL0 + dig->afmt->offset,
425			       HDMI_AVI_INFO_SEND | /* enable AVI info frames */
426			       HDMI_AVI_INFO_CONT); /* required for audio info values to be updated */
427			WREG32_AND(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
428				   ~AFMT_AUDIO_SAMPLE_SEND);
429		}
430	} else {
431		WREG32_AND(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
432			   ~AFMT_AUDIO_SAMPLE_SEND);
433		WREG32(HDMI_INFOFRAME_CONTROL0 + dig->afmt->offset, 0);
434	}
435
436	dig->afmt->enabled = enable;
437
438	DRM_DEBUG("%sabling HDMI interface @ 0x%04X for encoder 0x%x\n",
439		  enable ? "En" : "Dis", dig->afmt->offset, radeon_encoder->encoder_id);
440}
441
442void evergreen_dp_enable(struct drm_encoder *encoder, bool enable)
443{
444	struct drm_device *dev = encoder->dev;
445	struct radeon_device *rdev = dev->dev_private;
446	struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
447	struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
448	struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
449
450	if (!dig || !dig->afmt)
451		return;
452
453	if (enable && connector &&
454	    drm_detect_monitor_audio(radeon_connector_edid(connector))) {
455		struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
456		struct radeon_connector *radeon_connector = to_radeon_connector(connector);
457		struct radeon_connector_atom_dig *dig_connector;
458		uint32_t val;
459
460		WREG32_OR(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
461			  AFMT_AUDIO_SAMPLE_SEND);
462
463		WREG32(EVERGREEN_DP_SEC_TIMESTAMP + dig->afmt->offset,
464		       EVERGREEN_DP_SEC_TIMESTAMP_MODE(1));
465
466		if (!ASIC_IS_DCE6(rdev) && radeon_connector->con_priv) {
467			dig_connector = radeon_connector->con_priv;
468			val = RREG32(EVERGREEN_DP_SEC_AUD_N + dig->afmt->offset);
469			val &= ~EVERGREEN_DP_SEC_N_BASE_MULTIPLE(0xf);
470
471			if (dig_connector->dp_clock == 162000)
472				val |= EVERGREEN_DP_SEC_N_BASE_MULTIPLE(3);
473			else
474				val |= EVERGREEN_DP_SEC_N_BASE_MULTIPLE(5);
475
476			WREG32(EVERGREEN_DP_SEC_AUD_N + dig->afmt->offset, val);
477		}
478
479		WREG32(EVERGREEN_DP_SEC_CNTL + dig->afmt->offset,
480			EVERGREEN_DP_SEC_ASP_ENABLE |		/* Audio packet transmission */
481			EVERGREEN_DP_SEC_ATP_ENABLE |		/* Audio timestamp packet transmission */
482			EVERGREEN_DP_SEC_AIP_ENABLE |		/* Audio infoframe packet transmission */
483			EVERGREEN_DP_SEC_STREAM_ENABLE);	/* Master enable for secondary stream engine */
484	} else {
485		WREG32(EVERGREEN_DP_SEC_CNTL + dig->afmt->offset, 0);
486		WREG32_AND(AFMT_AUDIO_PACKET_CONTROL + dig->afmt->offset,
487			   ~AFMT_AUDIO_SAMPLE_SEND);
488	}
489
490	dig->afmt->enabled = enable;
491}
492