diff options
Diffstat (limited to 'sound/soc/sof/mediatek/mt8195/mt8195-loader.c')
| -rw-r--r-- | sound/soc/sof/mediatek/mt8195/mt8195-loader.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/sound/soc/sof/mediatek/mt8195/mt8195-loader.c b/sound/soc/sof/mediatek/mt8195/mt8195-loader.c new file mode 100644 index 000000000000..4be99ff4ebd3 --- /dev/null +++ b/sound/soc/sof/mediatek/mt8195/mt8195-loader.c @@ -0,0 +1,61 @@ +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) +// +// Copyright (c) 2021 Mediatek Corporation. All rights reserved. +// +// Author: YC Hung <yc.hung@mediatek.com> +// +// Hardware interface for mt8195 DSP code loader + +#include <sound/sof.h> +#include "mt8195.h" +#include "../../ops.h" + +void sof_hifixdsp_boot_sequence(struct snd_sof_dev *sdev, u32 boot_addr) +{ + /* ADSP bootup base */ + snd_sof_dsp_write(sdev, DSP_REG_BAR, DSP_ALTRESETVEC, boot_addr); + + /* pull high RunStall (set bit3 to 1) */ + snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW, + ADSP_RUNSTALL, ADSP_RUNSTALL); + + /* pull high StatVectorSel to use AltResetVec (set bit4 to 1) */ + snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW, + STATVECTOR_SEL, STATVECTOR_SEL); + + /* toggle DReset & BReset */ + /* pull high DReset & BReset */ + snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW, + ADSP_BRESET_SW | ADSP_DRESET_SW, + ADSP_BRESET_SW | ADSP_DRESET_SW); + + /* delay 10 DSP cycles at 26M about 1us by IP vendor's suggestion */ + udelay(1); + + /* pull low DReset & BReset */ + snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW, + ADSP_BRESET_SW | ADSP_DRESET_SW, + 0); + + /* Enable PDebug */ + snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_PDEBUGBUS0, + PDEBUG_ENABLE, + PDEBUG_ENABLE); + + /* release RunStall (set bit3 to 0) */ + snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW, + ADSP_RUNSTALL, 0); +} + +void sof_hifixdsp_shutdown(struct snd_sof_dev *sdev) +{ + /* RUN_STALL pull high again to reset */ + snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW, + ADSP_RUNSTALL, ADSP_RUNSTALL); + + /* pull high DReset & BReset */ + snd_sof_dsp_update_bits(sdev, DSP_REG_BAR, DSP_RESET_SW, + ADSP_BRESET_SW | ADSP_DRESET_SW, + ADSP_BRESET_SW | ADSP_DRESET_SW); +} + |