diff options
| author | Cezary Rojewski <cezary.rojewski@intel.com> | 2022-03-11 18:35:42 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-03-11 19:24:08 +0300 |
| commit | 45864e49a05aa446b9d99c464c1a9f46956ed32c (patch) | |
| tree | 0bd2e6adad26f4fbb12f5d29e7b55e99e4c689f2 /sound/soc/intel/avs/cldma.h | |
| parent | b27f452317236b0cbaa94c4498f8241e2ad871b1 (diff) | |
| download | linux-45864e49a05aa446b9d99c464c1a9f46956ed32c.tar.xz | |
ASoC: Intel: avs: Implement CLDMA transfer
SKL and KBL rely on a dedicated HDAudio DMA stream for code loading and
authentication. The implementation of this specific mechanism for
SKL-based platforms re-uses HDAudio DMA (streaming) functions found in
HDA library to avoid duplication of functionality.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220311153544.136854-16-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/intel/avs/cldma.h')
| -rw-r--r-- | sound/soc/intel/avs/cldma.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/sound/soc/intel/avs/cldma.h b/sound/soc/intel/avs/cldma.h new file mode 100644 index 000000000000..754fcf9ee585 --- /dev/null +++ b/sound/soc/intel/avs/cldma.h @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright(c) 2021-2022 Intel Corporation. All rights reserved. + * + * Author: Cezary Rojewski <cezary.rojewski@intel.com> + */ + +#ifndef __SOUND_SOC_INTEL_AVS_CLDMA_H +#define __SOUND_SOC_INTEL_AVS_CLDMA_H + +#define AVS_CL_DEFAULT_BUFFER_SIZE (32 * PAGE_SIZE) + +struct hda_cldma; +extern struct hda_cldma code_loader; + +void hda_cldma_fill(struct hda_cldma *cl); +void hda_cldma_transfer(struct hda_cldma *cl, unsigned long start_delay); + +int hda_cldma_start(struct hda_cldma *cl); +int hda_cldma_stop(struct hda_cldma *cl); +int hda_cldma_reset(struct hda_cldma *cl); + +void hda_cldma_set_data(struct hda_cldma *cl, void *data, unsigned int size); +void hda_cldma_setup(struct hda_cldma *cl); +int hda_cldma_init(struct hda_cldma *cl, struct hdac_bus *bus, void __iomem *dsp_ba, + unsigned int buffer_size); +void hda_cldma_free(struct hda_cldma *cl); + +#endif |