1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
|
// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license. When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2018 Intel Corporation. All rights reserved.
//
// Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com>
// Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
// Rander Wang <rander.wang@intel.com>
// Keyon Jie <yang.jie@linux.intel.com>
//
/*
* Hardware interface for generic Intel audio DSP HDA IP
*/
#include <sound/hda_register.h>
#include <sound/pcm_params.h>
#include "../ops.h"
#include "hda.h"
#define SDnFMT_BASE(x) ((x) << 14)
#define SDnFMT_MULT(x) (((x) - 1) << 11)
#define SDnFMT_DIV(x) (((x) - 1) << 8)
#define SDnFMT_BITS(x) ((x) << 4)
#define SDnFMT_CHAN(x) ((x) << 0)
static inline u32 get_mult_div(struct snd_sof_dev *sdev, int rate)
{
switch (rate) {
case 8000:
return SDnFMT_DIV(6);
case 9600:
return SDnFMT_DIV(5);
case 11025:
return SDnFMT_BASE(1) | SDnFMT_DIV(4);
case 16000:
return SDnFMT_DIV(3);
case 22050:
return SDnFMT_BASE(1) | SDnFMT_DIV(2);
case 32000:
return SDnFMT_DIV(3) | SDnFMT_MULT(2);
case 44100:
return SDnFMT_BASE(1);
case 48000:
return 0;
case 88200:
return SDnFMT_BASE(1) | SDnFMT_MULT(2);
case 96000:
return SDnFMT_MULT(2);
case 176400:
return SDnFMT_BASE(1) | SDnFMT_MULT(4);
case 192000:
return SDnFMT_MULT(4);
default:
dev_warn(sdev->dev, "can't find div rate %d using 48kHz\n",
rate);
return 0; /* use 48KHz if not found */
}
};
static inline u32 get_bits(struct snd_sof_dev *sdev, int sample_bits)
{
switch (sample_bits) {
case 8:
return SDnFMT_BITS(0);
case 16:
return SDnFMT_BITS(1);
case 20:
return SDnFMT_BITS(2);
case 24:
return SDnFMT_BITS(3);
case 32:
return SDnFMT_BITS(4);
default:
dev_warn(sdev->dev, "can't find %d bits using 16bit\n",
sample_bits);
return SDnFMT_BITS(1); /* use 16bits format if not found */
}
};
int hda_dsp_pcm_hw_params(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct sof_ipc_stream_params *ipc_params)
{
struct hdac_stream *hstream = substream->runtime->private_data;
struct hdac_ext_stream *stream = stream_to_hdac_ext_stream(hstream);
struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
struct snd_dma_buffer *dmab;
struct sof_ipc_fw_version *v = &sdev->fw_ready.version;
int ret;
u32 size, rate, bits;
size = params_buffer_bytes(params);
rate = get_mult_div(sdev, params_rate(params));
bits = get_bits(sdev, params_width(params));
hstream->substream = substream;
dmab = substream->runtime->dma_buffer_p;
hstream->format_val = rate | bits | (params_channels(params) - 1);
hstream->bufsize = size;
hstream->period_bytes = params_period_bytes(params);
hstream->no_period_wakeup =
(params->info & SNDRV_PCM_INFO_NO_PERIOD_WAKEUP) &&
(params->flags & SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP);
ret = hda_dsp_stream_hw_params(sdev, stream, dmab, params);
if (ret < 0) {
dev_err(sdev->dev, "error: hdac prepare failed: %x\n", ret);
return ret;
}
/* disable SPIB, to enable buffer wrap for stream */
hda_dsp_stream_spib_config(sdev, stream, HDA_DSP_SPIB_DISABLE, 0);
/* update no_stream_position flag for ipc params */
if (hda && hda->no_ipc_position) {
/* For older ABIs set host_period_bytes to zero to inform
* FW we don't want position updates. Newer versions use
* no_stream_position for this purpose.
*/
if (v->abi_version < SOF_ABI_VER(3, 10, 0))
ipc_params->host_period_bytes = 0;
else
ipc_params->no_stream_position = 1;
}
ipc_params->stream_tag = hstream->stream_tag;
return 0;
}
int hda_dsp_pcm_trigger(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream, int cmd)
{
struct hdac_stream *hstream = substream->runtime->private_data;
struct hdac_ext_stream *stream = stream_to_hdac_ext_stream(hstream);
return hda_dsp_stream_trigger(sdev, stream, cmd);
}
snd_pcm_uframes_t hda_dsp_pcm_pointer(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct hdac_stream *hstream = substream->runtime->private_data;
struct sof_intel_hda_dev *hda = sdev->pdata->hw_pdata;
struct snd_sof_pcm *spcm;
snd_pcm_uframes_t pos;
spcm = snd_sof_find_spcm_dai(sdev, rtd);
if (!spcm) {
dev_warn_ratelimited(sdev->dev, "warn: can't find PCM with DAI ID %d\n",
rtd->dai_link->id);
return 0;
}
if (hda && !hda->no_ipc_position) {
/* read position from IPC position */
pos = spcm->stream[substream->stream].posn.host_posn;
goto found;
}
/*
* DPIB/posbuf position mode:
* For Playback, Use DPIB register from HDA space which
* reflects the actual data transferred.
* For Capture, Use the position buffer for pointer, as DPIB
* is not accurate enough, its update may be completed
* earlier than the data written to DDR.
*/
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
pos = snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR,
AZX_REG_VS_SDXDPIB_XBASE +
(AZX_REG_VS_SDXDPIB_XINTERVAL *
hstream->index));
} else {
/*
* For capture stream, we need more workaround to fix the
* position incorrect issue:
*
* 1. Wait at least 20us before reading position buffer after
* the interrupt generated(IOC), to make sure position update
* happens on frame boundary i.e. 20.833uSec for 48KHz.
* 2. Perform a dummy Read to DPIB register to flush DMA
* position value.
* 3. Read the DMA Position from posbuf. Now the readback
* value should be >= period boundary.
*/
usleep_range(20, 21);
snd_sof_dsp_read(sdev, HDA_DSP_HDA_BAR,
AZX_REG_VS_SDXDPIB_XBASE +
(AZX_REG_VS_SDXDPIB_XINTERVAL *
hstream->index));
pos = snd_hdac_stream_get_pos_posbuf(hstream);
}
if (pos >= hstream->bufsize)
pos = 0;
found:
pos = bytes_to_frames(substream->runtime, pos);
dev_vdbg(sdev->dev, "PCM: stream %d dir %d position %lu\n",
hstream->index, substream->stream, pos);
return pos;
}
int hda_dsp_pcm_open(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream)
{
struct hdac_ext_stream *dsp_stream;
int direction = substream->stream;
dsp_stream = hda_dsp_stream_get(sdev, direction);
if (!dsp_stream) {
dev_err(sdev->dev, "error: no stream available\n");
return -ENODEV;
}
/* binding pcm substream to hda stream */
substream->runtime->private_data = &dsp_stream->hstream;
return 0;
}
int hda_dsp_pcm_close(struct snd_sof_dev *sdev,
struct snd_pcm_substream *substream)
{
struct hdac_stream *hstream = substream->runtime->private_data;
int direction = substream->stream;
int ret;
ret = hda_dsp_stream_put(sdev, direction, hstream->stream_tag);
if (ret) {
dev_dbg(sdev->dev, "stream %s not opened!\n", substream->name);
return -ENODEV;
}
/* unbinding pcm substream to hda stream */
substream->runtime->private_data = NULL;
return 0;
}
|
