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 "../sof-audio.h"
22 #include "../ops.h"
23 #include "hda.h"
24
25 #define SDnFMT_BASE(x) ((x) << 14)
26 #define SDnFMT_MULT(x) (((x) - 1) << 11)
27 #define SDnFMT_DIV(x) (((x) - 1) << 8)
28 #define SDnFMT_BITS(x) ((x) << 4)
29 #define SDnFMT_CHAN(x) ((x) << 0)
30
31 static bool hda_always_enable_dmi_l1;
32 module_param_named(always_enable_dmi_l1, hda_always_enable_dmi_l1, bool, 0444);
33 MODULE_PARM_DESC(always_enable_dmi_l1, "SOF HDA always enable DMI l1");
34
35 static bool hda_disable_rewinds = IS_ENABLED(CONFIG_SND_SOC_SOF_HDA_DISABLE_REWINDS);
36 module_param_named(disable_rewinds, hda_disable_rewinds, bool, 0444);
37 MODULE_PARM_DESC(disable_rewinds, "SOF HDA disable rewinds");
38
hda_dsp_get_mult_div(struct snd_sof_dev * sdev,int rate)39 u32 hda_dsp_get_mult_div(struct snd_sof_dev *sdev, int rate)
40 {
41 switch (rate) {
42 case 8000:
43 return SDnFMT_DIV(6);
44 case 9600:
45 return SDnFMT_DIV(5);
46 case 11025:
47 return SDnFMT_BASE(1) | SDnFMT_DIV(4);
48 case 16000:
49 return SDnFMT_DIV(3);
50 case 22050:
51 return SDnFMT_BASE(1) | SDnFMT_DIV(2);
52 case 32000:
53 return SDnFMT_DIV(3) | SDnFMT_MULT(2);
54 case 44100:
55 return SDnFMT_BASE(1);
56 case 48000:
57 return 0;
58 case 88200:
59 return SDnFMT_BASE(1) | SDnFMT_MULT(2);
60 case 96000:
61 return SDnFMT_MULT(2);
62 case 176400:
63 return SDnFMT_BASE(1) | SDnFMT_MULT(4);
64 case 192000:
65 return SDnFMT_MULT(4);
66 default:
67 dev_warn(sdev->dev, "can't find div rate %d using 48kHz\n",
68 rate);
69 return 0; /* use 48KHz if not found */
70 }
71 };
72
hda_dsp_get_bits(struct snd_sof_dev * sdev,int sample_bits)73 u32 hda_dsp_get_bits(struct snd_sof_dev *sdev, int sample_bits)
74 {
75 switch (sample_bits) {
76 case 8:
77 return SDnFMT_BITS(0);
78 case 16:
79 return SDnFMT_BITS(1);
80 case 20:
81 return SDnFMT_BITS(2);
82 case 24:
83 return SDnFMT_BITS(3);
84 case 32:
85 return SDnFMT_BITS(4);
86 default:
87 dev_warn(sdev->dev, "can't find %d bits using 16bit\n",
88 sample_bits);
89 return SDnFMT_BITS(1); /* use 16bits format if not found */
90 }
91 };
92
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)93 int hda_dsp_pcm_hw_params(struct snd_sof_dev *sdev,
94 struct snd_pcm_substream *substream,
95 struct snd_pcm_hw_params *params,
96 struct snd_sof_platform_stream_params *platform_params)
97 {
98 struct hdac_stream *hstream = substream->runtime->private_data;
99 struct hdac_ext_stream *hext_stream = stream_to_hdac_ext_stream(hstream);
100 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
101 struct snd_dma_buffer *dmab;
102 int ret;
103 u32 size, rate, bits;
104
105 size = params_buffer_bytes(params);
106 rate = hda_dsp_get_mult_div(sdev, params_rate(params));
107 bits = hda_dsp_get_bits(sdev, params_width(params));
108
109 hstream->substream = substream;
110
111 dmab = substream->runtime->dma_buffer_p;
112
113 hstream->format_val = rate | bits | (params_channels(params) - 1);
114 hstream->bufsize = size;
115 hstream->period_bytes = params_period_bytes(params);
116 hstream->no_period_wakeup =
117 (params->info & SNDRV_PCM_INFO_NO_PERIOD_WAKEUP) &&
118 (params->flags & SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP);
119
120 ret = hda_dsp_stream_hw_params(sdev, hext_stream, dmab, params);
121 if (ret < 0) {
122 dev_err(sdev->dev, "error: hdac prepare failed: %d\n", ret);
123 return ret;
124 }
125
126 /* enable SPIB when rewinds are disabled */
127 if (hda_disable_rewinds)
128 hda_dsp_stream_spib_config(sdev, hext_stream, HDA_DSP_SPIB_ENABLE, 0);
129 else
130 hda_dsp_stream_spib_config(sdev, hext_stream, HDA_DSP_SPIB_DISABLE, 0);
131
132 if (hda)
133 platform_params->no_ipc_position = hda->no_ipc_position;
134
135 platform_params->stream_tag = hstream->stream_tag;
136
137 return 0;
138 }
139
140 /* update SPIB register with appl position */
hda_dsp_pcm_ack(struct snd_sof_dev * sdev,struct snd_pcm_substream * substream)141 int hda_dsp_pcm_ack(struct snd_sof_dev *sdev, struct snd_pcm_substream *substream)
142 {
143 struct hdac_stream *hstream = substream->runtime->private_data;
144 struct hdac_ext_stream *hext_stream = stream_to_hdac_ext_stream(hstream);
145 struct snd_pcm_runtime *runtime = substream->runtime;
146 ssize_t appl_pos, buf_size;
147 u32 spib;
148
149 appl_pos = frames_to_bytes(runtime, runtime->control->appl_ptr);
150 buf_size = frames_to_bytes(runtime, runtime->buffer_size);
151
152 spib = appl_pos % buf_size;
153
154 /* Allowable value for SPIB is 1 byte to max buffer size */
155 if (!spib)
156 spib = buf_size;
157
158 sof_io_write(sdev, hext_stream->spib_addr, spib);
159
160 return 0;
161 }
162
hda_dsp_pcm_trigger(struct snd_sof_dev * sdev,struct snd_pcm_substream * substream,int cmd)163 int hda_dsp_pcm_trigger(struct snd_sof_dev *sdev,
164 struct snd_pcm_substream *substream, int cmd)
165 {
166 struct hdac_stream *hstream = substream->runtime->private_data;
167 struct hdac_ext_stream *hext_stream = stream_to_hdac_ext_stream(hstream);
168
169 return hda_dsp_stream_trigger(sdev, hext_stream, cmd);
170 }
171
hda_dsp_pcm_pointer(struct snd_sof_dev * sdev,struct snd_pcm_substream * substream)172 snd_pcm_uframes_t hda_dsp_pcm_pointer(struct snd_sof_dev *sdev,
173 struct snd_pcm_substream *substream)
174 {
175 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
176 struct snd_soc_component *scomp = sdev->component;
177 struct hdac_stream *hstream = substream->runtime->private_data;
178 struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
179 struct snd_sof_pcm *spcm;
180 snd_pcm_uframes_t pos;
181
182 spcm = snd_sof_find_spcm_dai(scomp, rtd);
183 if (!spcm) {
184 dev_warn_ratelimited(sdev->dev, "warn: can't find PCM with DAI ID %d\n",
185 rtd->dai_link->id);
186 return 0;
187 }
188
189 if (hda && !hda->no_ipc_position) {
190 /* read position from IPC position */
191 pos = spcm->stream[substream->stream].posn.host_posn;
192 goto found;
193 }
194
195 pos = hda_dsp_stream_get_position(hstream, substream->stream, true);
196 found:
197 pos = bytes_to_frames(substream->runtime, pos);
198
199 dev_vdbg(sdev->dev, "PCM: stream %d dir %d position %lu\n",
200 hstream->index, substream->stream, pos);
201 return pos;
202 }
203
hda_dsp_pcm_open(struct snd_sof_dev * sdev,struct snd_pcm_substream * substream)204 int hda_dsp_pcm_open(struct snd_sof_dev *sdev,
205 struct snd_pcm_substream *substream)
206 {
207 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
208 struct snd_pcm_runtime *runtime = substream->runtime;
209 struct snd_soc_component *scomp = sdev->component;
210 struct hdac_ext_stream *dsp_stream;
211 struct snd_sof_pcm *spcm;
212 int direction = substream->stream;
213 u32 flags = 0;
214
215 spcm = snd_sof_find_spcm_dai(scomp, rtd);
216 if (!spcm) {
217 dev_err(sdev->dev, "error: can't find PCM with DAI ID %d\n", rtd->dai_link->id);
218 return -EINVAL;
219 }
220
221 /*
222 * if we want the .ack to work, we need to prevent the control from being mapped.
223 * The status can still be mapped.
224 */
225 if (hda_disable_rewinds)
226 runtime->hw.info |= SNDRV_PCM_INFO_NO_REWINDS | SNDRV_PCM_INFO_SYNC_APPLPTR;
227
228 /*
229 * All playback streams are DMI L1 capable, capture streams need
230 * pause push/release to be disabled
231 */
232 if (hda_always_enable_dmi_l1 && direction == SNDRV_PCM_STREAM_CAPTURE)
233 runtime->hw.info &= ~SNDRV_PCM_INFO_PAUSE;
234
235 if (hda_always_enable_dmi_l1 ||
236 direction == SNDRV_PCM_STREAM_PLAYBACK ||
237 spcm->stream[substream->stream].d0i3_compatible)
238 flags |= SOF_HDA_STREAM_DMI_L1_COMPATIBLE;
239
240 dsp_stream = hda_dsp_stream_get(sdev, direction, flags);
241 if (!dsp_stream) {
242 dev_err(sdev->dev, "error: no stream available\n");
243 return -ENODEV;
244 }
245
246 /* minimum as per HDA spec */
247 snd_pcm_hw_constraint_step(substream->runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4);
248
249 /* avoid circular buffer wrap in middle of period */
250 snd_pcm_hw_constraint_integer(substream->runtime,
251 SNDRV_PCM_HW_PARAM_PERIODS);
252
253 /* binding pcm substream to hda stream */
254 substream->runtime->private_data = &dsp_stream->hstream;
255 return 0;
256 }
257
hda_dsp_pcm_close(struct snd_sof_dev * sdev,struct snd_pcm_substream * substream)258 int hda_dsp_pcm_close(struct snd_sof_dev *sdev,
259 struct snd_pcm_substream *substream)
260 {
261 struct hdac_stream *hstream = substream->runtime->private_data;
262 int direction = substream->stream;
263 int ret;
264
265 ret = hda_dsp_stream_put(sdev, direction, hstream->stream_tag);
266
267 if (ret) {
268 dev_dbg(sdev->dev, "stream %s not opened!\n", substream->name);
269 return -ENODEV;
270 }
271
272 /* unbinding pcm substream to hda stream */
273 substream->runtime->private_data = NULL;
274 return 0;
275 }
276