1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
2 //
3 // This file is provided under a dual BSD/GPLv2 license. When using or
4 // redistributing this file, you may do so under either license.
5 //
6 // Copyright(c) 2018 Intel Corporation. All rights reserved.
7 //
8 // Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com>
9 // Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
10 // Rander Wang <rander.wang@intel.com>
11 // Keyon Jie <yang.jie@linux.intel.com>
12 //
13
14 /*
15 * Hardware interface for generic Intel audio DSP HDA IP
16 */
17
18 #include <linux/moduleparam.h>
19 #include <sound/hda_register.h>
20 #include <sound/pcm_params.h>
21 #include <trace/events/sof_intel.h>
22 #include "../sof-audio.h"
23 #include "../ops.h"
24 #include "hda.h"
25
26 #define SDnFMT_BASE(x) ((x) << 14)
27 #define SDnFMT_MULT(x) (((x) - 1) << 11)
28 #define SDnFMT_DIV(x) (((x) - 1) << 8)
29 #define SDnFMT_BITS(x) ((x) << 4)
30 #define SDnFMT_CHAN(x) ((x) << 0)
31
32 static bool hda_always_enable_dmi_l1;
33 module_param_named(always_enable_dmi_l1, hda_always_enable_dmi_l1, bool, 0444);
34 MODULE_PARM_DESC(always_enable_dmi_l1, "SOF HDA always enable DMI l1");
35
36 static bool hda_disable_rewinds;
37 module_param_named(disable_rewinds, hda_disable_rewinds, bool, 0444);
38 MODULE_PARM_DESC(disable_rewinds, "SOF HDA disable rewinds");
39
hda_dsp_get_mult_div(struct snd_sof_dev * sdev,int rate)40 u32 hda_dsp_get_mult_div(struct snd_sof_dev *sdev, int rate)
41 {
42 switch (rate) {
43 case 8000:
44 return SDnFMT_DIV(6);
45 case 9600:
46 return SDnFMT_DIV(5);
47 case 11025:
48 return SDnFMT_BASE(1) | SDnFMT_DIV(4);
49 case 16000:
50 return SDnFMT_DIV(3);
51 case 22050:
52 return SDnFMT_BASE(1) | SDnFMT_DIV(2);
53 case 32000:
54 return SDnFMT_DIV(3) | SDnFMT_MULT(2);
55 case 44100:
56 return SDnFMT_BASE(1);
57 case 48000:
58 return 0;
59 case 88200:
60 return SDnFMT_BASE(1) | SDnFMT_MULT(2);
61 case 96000:
62 return SDnFMT_MULT(2);
63 case 176400:
64 return SDnFMT_BASE(1) | SDnFMT_MULT(4);
65 case 192000:
66 return SDnFMT_MULT(4);
67 default:
68 dev_warn(sdev->dev, "can't find div rate %d using 48kHz\n",
69 rate);
70 return 0; /* use 48KHz if not found */
71 }
72 };
73
hda_dsp_get_bits(struct snd_sof_dev * sdev,int sample_bits)74 u32 hda_dsp_get_bits(struct snd_sof_dev *sdev, int sample_bits)
75 {
76 switch (sample_bits) {
77 case 8:
78 return SDnFMT_BITS(0);
79 case 16:
80 return SDnFMT_BITS(1);
81 case 20:
82 return SDnFMT_BITS(2);
83 case 24:
84 return SDnFMT_BITS(3);
85 case 32:
86 return SDnFMT_BITS(4);
87 default:
88 dev_warn(sdev->dev, "can't find %d bits using 16bit\n",
89 sample_bits);
90 return SDnFMT_BITS(1); /* use 16bits format if not found */
91 }
92 };
93
hda_dsp_pcm_hw_params(struct snd_sof_dev * sdev,struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_sof_platform_stream_params * platform_params)94 int hda_dsp_pcm_hw_params(struct snd_sof_dev *sdev,
95 struct snd_pcm_substream *substream,
96 struct snd_pcm_hw_params *params,
97 struct snd_sof_platform_stream_params *platform_params)
98 {
99 struct hdac_stream *hstream = substream->runtime->private_data;
100 struct hdac_ext_stream *hext_stream = stream_to_hdac_ext_stream(hstream);
101 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
102 struct snd_dma_buffer *dmab;
103 int ret;
104
105 hstream->substream = substream;
106
107 dmab = substream->runtime->dma_buffer_p;
108
109 /*
110 * Use the codec required format val (which is link_bps adjusted) when
111 * the DSP is not in use
112 */
113 if (!sdev->dspless_mode_selected) {
114 u32 rate = hda_dsp_get_mult_div(sdev, params_rate(params));
115 u32 bits = hda_dsp_get_bits(sdev, params_width(params));
116
117 hstream->format_val = rate | bits | (params_channels(params) - 1);
118 }
119
120 hstream->bufsize = params_buffer_bytes(params);
121 hstream->period_bytes = params_period_bytes(params);
122 hstream->no_period_wakeup =
123 (params->info & SNDRV_PCM_INFO_NO_PERIOD_WAKEUP) &&
124 (params->flags & SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP);
125
126 ret = hda_dsp_stream_hw_params(sdev, hext_stream, dmab, params);
127 if (ret < 0) {
128 dev_err(sdev->dev, "error: hdac prepare failed: %d\n", ret);
129 return ret;
130 }
131
132 /* enable SPIB when rewinds are disabled */
133 if (hda_disable_rewinds)
134 hda_dsp_stream_spib_config(sdev, hext_stream, HDA_DSP_SPIB_ENABLE, 0);
135 else
136 hda_dsp_stream_spib_config(sdev, hext_stream, HDA_DSP_SPIB_DISABLE, 0);
137
138 if (hda)
139 platform_params->no_ipc_position = hda->no_ipc_position;
140
141 platform_params->stream_tag = hstream->stream_tag;
142
143 return 0;
144 }
145
146 /* update SPIB register with appl position */
hda_dsp_pcm_ack(struct snd_sof_dev * sdev,struct snd_pcm_substream * substream)147 int hda_dsp_pcm_ack(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream)
148 {
149 struct hdac_stream *hstream = substream->runtime->private_data;
150 struct snd_pcm_runtime *runtime = substream->runtime;
151 ssize_t appl_pos, buf_size;
152 u32 spib;
153
154 appl_pos = frames_to_bytes(runtime, runtime->control->appl_ptr);
155 buf_size = frames_to_bytes(runtime, runtime->buffer_size);
156
157 spib = appl_pos % buf_size;
158
159 /* Allowable value for SPIB is 1 byte to max buffer size */
160 if (!spib)
161 spib = buf_size;
162
163 sof_io_write(sdev, hstream->spib_addr, spib);
164
165 return 0;
166 }
167
hda_dsp_pcm_trigger(struct snd_sof_dev * sdev,struct snd_pcm_substream * substream,int cmd)168 int hda_dsp_pcm_trigger(struct snd_sof_dev *sdev,
169 struct snd_pcm_substream *substream, int cmd)
170 {
171 struct hdac_stream *hstream = substream->runtime->private_data;
172 struct hdac_ext_stream *hext_stream = stream_to_hdac_ext_stream(hstream);
173
174 return hda_dsp_stream_trigger(sdev, hext_stream, cmd);
175 }
176
hda_dsp_pcm_pointer(struct snd_sof_dev * sdev,struct snd_pcm_substream * substream)177 snd_pcm_uframes_t hda_dsp_pcm_pointer(struct snd_sof_dev *sdev,
178 struct snd_pcm_substream *substream)
179 {
180 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
181 struct snd_soc_component *scomp = sdev->component;
182 struct hdac_stream *hstream = substream->runtime->private_data;
183 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
184 struct snd_sof_pcm *spcm;
185 snd_pcm_uframes_t pos;
186
187 spcm = snd_sof_find_spcm_dai(scomp, rtd);
188 if (!spcm) {
189 dev_warn_ratelimited(sdev->dev, "warn: can't find PCM with DAI ID %d\n",
190 rtd->dai_link->id);
191 return 0;
192 }
193
194 if (hda && !hda->no_ipc_position) {
195 /* read position from IPC position */
196 pos = spcm->stream[substream->stream].posn.host_posn;
197 goto found;
198 }
199
200 pos = hda_dsp_stream_get_position(hstream, substream->stream, true);
201 found:
202 pos = bytes_to_frames(substream->runtime, pos);
203
204 trace_sof_intel_hda_dsp_pcm(sdev, hstream, substream, pos);
205 return pos;
206 }
207
hda_dsp_pcm_open(struct snd_sof_dev * sdev,struct snd_pcm_substream * substream)208 int hda_dsp_pcm_open(struct snd_sof_dev *sdev,
209 struct snd_pcm_substream *substream)
210 {
211 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
212 struct snd_pcm_runtime *runtime = substream->runtime;
213 struct snd_soc_component *scomp = sdev->component;
214 struct hdac_ext_stream *dsp_stream;
215 struct snd_sof_pcm *spcm;
216 int direction = substream->stream;
217 u32 flags = 0;
218
219 spcm = snd_sof_find_spcm_dai(scomp, rtd);
220 if (!spcm) {
221 dev_err(sdev->dev, "error: can't find PCM with DAI ID %d\n", rtd->dai_link->id);
222 return -EINVAL;
223 }
224
225 /*
226 * if we want the .ack to work, we need to prevent the control from being mapped.
227 * The status can still be mapped.
228 */
229 if (hda_disable_rewinds)
230 runtime->hw.info |= SNDRV_PCM_INFO_NO_REWINDS | SNDRV_PCM_INFO_SYNC_APPLPTR;
231
232 /*
233 * All playback streams are DMI L1 capable, capture streams need
234 * pause push/release to be disabled
235 */
236 if (hda_always_enable_dmi_l1 && direction == SNDRV_PCM_STREAM_CAPTURE)
237 runtime->hw.info &= ~SNDRV_PCM_INFO_PAUSE;
238
239 if (hda_always_enable_dmi_l1 ||
240 direction == SNDRV_PCM_STREAM_PLAYBACK ||
241 spcm->stream[substream->stream].d0i3_compatible)
242 flags |= SOF_HDA_STREAM_DMI_L1_COMPATIBLE;
243
244 dsp_stream = hda_dsp_stream_get(sdev, direction, flags);
245 if (!dsp_stream) {
246 dev_err(sdev->dev, "error: no stream available\n");
247 return -ENODEV;
248 }
249
250 /* minimum as per HDA spec */
251 snd_pcm_hw_constraint_step(substream->runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4);
252
253 /* avoid circular buffer wrap in middle of period */
254 snd_pcm_hw_constraint_integer(substream->runtime,
255 SNDRV_PCM_HW_PARAM_PERIODS);
256
257 /* Only S16 and S32 supported by HDA hardware when used without DSP */
258 if (sdev->dspless_mode_selected)
259 snd_pcm_hw_constraint_mask64(substream->runtime, SNDRV_PCM_HW_PARAM_FORMAT,
260 SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S32);
261
262 /* binding pcm substream to hda stream */
263 substream->runtime->private_data = &dsp_stream->hstream;
264 return 0;
265 }
266
hda_dsp_pcm_close(struct snd_sof_dev * sdev,struct snd_pcm_substream * substream)267 int hda_dsp_pcm_close(struct snd_sof_dev *sdev,
268 struct snd_pcm_substream *substream)
269 {
270 struct hdac_stream *hstream = substream->runtime->private_data;
271 int direction = substream->stream;
272 int ret;
273
274 ret = hda_dsp_stream_put(sdev, direction, hstream->stream_tag);
275
276 if (ret) {
277 dev_dbg(sdev->dev, "stream %s not opened!\n", substream->name);
278 return -ENODEV;
279 }
280
281 /* unbinding pcm substream to hda stream */
282 substream->runtime->private_data = NULL;
283 return 0;
284 }
285