1 # SPDX-License-Identifier: GPL-2.0-only 1 # SPDX-License-Identifier: GPL-2.0-only
2 config SND_HDA_CORE 2 config SND_HDA_CORE
3 tristate 3 tristate
4 select REGMAP 4 select REGMAP
5 5
6 config SND_HDA_DSP_LOADER 6 config SND_HDA_DSP_LOADER
7 bool 7 bool
8 8
9 config SND_HDA_ALIGNED_MMIO 9 config SND_HDA_ALIGNED_MMIO
10 bool 10 bool
11 11
12 config SND_HDA_COMPONENT 12 config SND_HDA_COMPONENT
13 bool 13 bool
14 14
15 config SND_HDA_I915 15 config SND_HDA_I915
16 bool 16 bool
17 select SND_HDA_COMPONENT 17 select SND_HDA_COMPONENT
18 18
19 config SND_HDA_EXT_CORE 19 config SND_HDA_EXT_CORE
20 tristate 20 tristate
21 select SND_HDA_CORE 21 select SND_HDA_CORE
22 22
23 config SND_HDA_PREALLOC_SIZE 23 config SND_HDA_PREALLOC_SIZE
24 int "Pre-allocated buffer size for HD- 24 int "Pre-allocated buffer size for HD-audio driver"
25 range 0 32768 25 range 0 32768
26 default 0 if SND_DMA_SGBUF 26 default 0 if SND_DMA_SGBUF
27 default 64 if !SND_DMA_SGBUF 27 default 64 if !SND_DMA_SGBUF
28 help 28 help
29 Specifies the default pre-allocated 29 Specifies the default pre-allocated buffer-size in kB for the
30 HD-audio driver. A larger buffer (e 30 HD-audio driver. A larger buffer (e.g. 2048) is preferred
31 for systems using PulseAudio. The d 31 for systems using PulseAudio. The default 64 is chosen just
32 for compatibility reasons. 32 for compatibility reasons.
33 On x86 systems, the default is zero 33 On x86 systems, the default is zero as S/G allocation works
34 and no preallocation is needed in mo 34 and no preallocation is needed in most cases.
35 35
36 Note that the pre-allocation size ca 36 Note that the pre-allocation size can be changed dynamically
37 via a proc file (/proc/asound/card*/ 37 via a proc file (/proc/asound/card*/pcm*/sub*/prealloc), too.
38 38
39 config SND_INTEL_NHLT 39 config SND_INTEL_NHLT
40 bool 40 bool
41 # this config should be selected only 41 # this config should be selected only for Intel ACPI platforms.
42 # A fallback is provided so that the c 42 # A fallback is provided so that the code compiles in all cases.
43 43
44 config SND_INTEL_DSP_CONFIG 44 config SND_INTEL_DSP_CONFIG
45 tristate 45 tristate
46 select ACPI_NHLT if ACPI 46 select ACPI_NHLT if ACPI
47 select SND_INTEL_NHLT if ACPI 47 select SND_INTEL_NHLT if ACPI
48 select SND_INTEL_SOUNDWIRE_ACPI if ACP 48 select SND_INTEL_SOUNDWIRE_ACPI if ACPI
49 # this config should be selected only 49 # this config should be selected only for Intel DSP platforms.
50 # A fallback is provided so that the c 50 # A fallback is provided so that the code compiles in all cases.
51 51
52 config SND_INTEL_SOUNDWIRE_ACPI 52 config SND_INTEL_SOUNDWIRE_ACPI
53 tristate 53 tristate
54 54
55 config SND_INTEL_BYT_PREFER_SOF 55 config SND_INTEL_BYT_PREFER_SOF
56 bool "Prefer SOF driver over SST on BY 56 bool "Prefer SOF driver over SST on BY/CHT platforms"
57 depends on SND_SST_ATOM_HIFI2_PLATFORM 57 depends on SND_SST_ATOM_HIFI2_PLATFORM_ACPI && SND_SOC_SOF_BAYTRAIL
58 default n 58 default n
59 help 59 help
60 The kernel has 2 drivers for the Low 60 The kernel has 2 drivers for the Low Power Engine audio-block on
61 Bay- and Cherry-Trail SoCs. The old 61 Bay- and Cherry-Trail SoCs. The old SST driver and the new SOF
62 driver. If both drivers are enabled 62 driver. If both drivers are enabled then the kernel will default
63 to using the old SST driver, unless 63 to using the old SST driver, unless told otherwise through the
64 snd_intel_dspcfg.dsp_driver module-p 64 snd_intel_dspcfg.dsp_driver module-parameter.
65 65
66 Set this option to Y to make the ker 66 Set this option to Y to make the kernel default to the new SOF
67 driver instead. 67 driver instead.
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