mirror of
https://github.com/brain-hackers/u-boot-brain
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tegra: sound: Add an audio hub driver
Add a driver for the audio hub. This is modelled as a misc device which supports writing audio data from I2S. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Simon Glass
Tom Warren
parent
c9d7542bf3
commit
112f2e1443
475
arch/arm/include/asm/arch-tegra/tegra_ahub.h
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475
arch/arm/include/asm/arch-tegra/tegra_ahub.h
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* tegra_ahub.h - Definitions for Tegra124 audio hub driver
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* Taken from dc tegra_ahub.h
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*
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* Copyright 2018 Google LLC
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* Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved.
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*/
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#ifndef _TEGRA_AHUB_H_
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#define _TEGRA_AHUB_H_
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/*
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* Each TX CIF transmits data into the XBAR. Each RX CIF can receive audio
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* transmitted by a particular TX CIF.
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*/
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struct xbar_regs {
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u32 apbif_rx0; /* AUDIO_APBIF_RX0, offset 0x00 */
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u32 apbif_rx1; /* AUDIO_APBIF_RX1, offset 0x04 */
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u32 apbif_rx2; /* AUDIO_APBIF_RX2, offset 0x08 */
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u32 apbif_rx3; /* AUDIO_APBIF_RX3, offset 0x0C */
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u32 i2s0_rx0; /* AUDIO_I2S0_RX0, offset 0x10 */
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u32 i2s1_rx0; /* AUDIO_I2S1_RX0, offset 0x14 */
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u32 i2s2_rx0; /* AUDIO_I2S2_RX0, offset 0x18 */
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u32 i2s3_rx0; /* AUDIO_I2S3_RX0, offset 0x1C */
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u32 i2s4_rx0; /* AUDIO_I2S4_RX0, offset 0x20 */
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u32 dam0_rx0; /* AUDIO_DAM0_RX0, offset 0x24 */
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u32 dam0_rx1; /* AUDIO_DAM0_RX1, offset 0x28 */
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u32 dam1_rx0; /* AUDIO_DAM1_RX0, offset 0x2C */
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u32 dam1_rx1; /* AUDIO_DAM1_RX1, offset 0x30 */
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u32 dam2_rx0; /* AUDIO_DAM2_RX0, offset 0x34 */
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u32 dam2_rx1; /* AUDIO_DAM2_RX1, offset 0x38 */
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u32 spdif_rx0; /* AUDIO_SPDIF_RX0, offset 0x3C */
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u32 spdif_rx1; /* AUDIO_SPDIF_RX1, offset 0x40 */
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u32 apbif_rx4; /* AUDIO_APBIF_RX4, offset 0x44 */
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u32 apbif_rx5; /* AUDIO_APBIF_RX4, offset 0x48 */
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u32 apbif_rx6; /* AUDIO_APBIF_RX4, offset 0x4C */
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u32 apbif_rx7; /* AUDIO_APBIF_RX4, offset 0x50 */
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u32 apbif_rx8; /* AUDIO_APBIF_RX4, offset 0x54 */
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u32 apbif_rx9; /* AUDIO_APBIF_RX4, offset 0x58 */
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u32 amx0_rx0; /* AUDIO_AMX0_RX0, offset 0x5C */
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u32 amx0_rx1; /* AUDIO_AMX0_RX1, offset 0x60 */
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u32 amx0_rx2; /* AUDIO_AMX0_RX2, offset 0x64 */
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u32 amx0_rx3; /* AUDIO_AMX0_RX3, offset 0x68 */
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u32 adx0_rx0; /* AUDIO_ADX0_RX0, offset 0x6C */
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};
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struct apbif_regs {
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u32 channel0_ctrl; /* APBIF_CHANNEL0_CTRL */
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u32 channel0_clr; /* APBIF_CHANNEL0_CLEAR */
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u32 channel0_stat; /* APBIF_CHANNEL0_STATUS */
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u32 channel0_txfifo; /* APBIF_CHANNEL0_TXFIFO */
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u32 channel0_rxfifo; /* APBIF_CHANNEL0_RXFIFO */
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u32 channel0_cif_tx0_ctrl; /* APBIF_AUDIOCIF_TX0_CTRL */
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u32 channel0_cif_rx0_ctrl; /* APBIF_AUDIOCIF_RX0_CTRL */
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u32 channel0_reserved0; /* RESERVED, offset 0x1C */
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/* ahub_channel1_ctrl/clr/stat/txfifo/rxfifl/ciftx/cifrx ... here */
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/* ahub_channel2_ctrl/clr/stat/txfifo/rxfifl/ciftx/cifrx ... here */
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/* ahub_channel3_ctrl/clr/stat/txfifo/rxfifl/ciftx/cifrx ... here */
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u32 reserved123[3 * 8];
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u32 config_link_ctrl; /* APBIF_CONFIG_LINK_CTRL_0, off 0x80 */
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u32 misc_ctrl; /* APBIF_MISC_CTRL_0, offset 0x84 */
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u32 apbdma_live_stat; /* APBIF_APBDMA_LIVE_STATUS_0 */
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u32 i2s_live_stat; /* APBIF_I2S_LIVE_STATUS_0 */
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u32 dam0_live_stat; /* APBIF_DAM0_LIVE_STATUS_0 */
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u32 dam1_live_stat; /* APBIF_DAM0_LIVE_STATUS_0 */
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u32 dam2_live_stat; /* APBIF_DAM0_LIVE_STATUS_0 */
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u32 spdif_live_stat; /* APBIF_SPDIF_LIVE_STATUS_0 */
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u32 i2s_int_mask; /* APBIF_I2S_INT_MASK_0, offset B0 */
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u32 dam_int_mask; /* APBIF_DAM_INT_MASK_0 */
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u32 reserved_int_mask; /* RESERVED, offset 0xB8 */
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u32 spdif_int_mask; /* APBIF_SPDIF_INT_MASK_0 */
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u32 apbif_int_mask; /* APBIF_APBIF_INT_MASK_0, off C0 */
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u32 reserved2_int_mask; /* RESERVED, offset 0xC4 */
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u32 i2s_int_stat; /* APBIF_I2S_INT_STATUS_0, offset C8 */
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u32 dam_int_stat; /* APBIF_DAM_INT_STATUS_0 */
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u32 reserved_int_stat; /* RESERVED, offset 0xD0 */
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u32 spdif_int_stat; /* APBIF_SPDIF_INT_STATUS_0 */
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u32 apbif_int_stat; /* APBIF_APBIF_INT_STATUS_0 */
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u32 reserved2_int_stat; /* RESERVED, offset 0xDC */
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u32 i2s_int_src; /* APBIF_I2S_INT_SOURCE_0, offset E0 */
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u32 dam_int_src; /* APBIF_DAM_INT_SOURCE_0 */
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u32 reserved_int_src; /* RESERVED, offset 0xE8 */
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u32 spdif_int_src; /* APBIF_SPDIF_INT_SOURCE_0 */
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u32 apbif_int_src; /* APBIF_APBIF_INT_SOURCE_0, off F0 */
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u32 reserved2_int_src; /* RESERVED, offset 0xF4 */
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u32 i2s_int_set; /* APBIF_I2S_INT_SET_0, offset 0xF8 */
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u32 dam_int_set; /* APBIF_DAM_INT_SET_0, offset 0xFC */
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u32 spdif_int_set; /* APBIF_SPDIF_INT_SET_0, off 0x100 */
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u32 apbif_int_set; /* APBIF_APBIF_INT_SET_0, off 0x104 */
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};
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/*
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* Tegra AHUB Registers Definition
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*/
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enum {
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TEGRA_AUDIOCIF_CTRL_FIFO_THRESHOLD_SHIFT = 24,
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TEGRA_AUDIOCIF_CTRL_FIFO_THRESHOLD_MASK_US = 0x3f,
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TEGRA_AUDIOCIF_CTRL_FIFO_THRESHOLD_MASK =
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TEGRA_AUDIOCIF_CTRL_FIFO_THRESHOLD_MASK_US <<
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TEGRA_AUDIOCIF_CTRL_FIFO_THRESHOLD_SHIFT,
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/* Channel count minus 1 */
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TEGRA_AUDIOCIF_CTRL_AUDIO_CHANNELS_SHIFT = 20,
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TEGRA_AUDIOCIF_CTRL_AUDIO_CHANNELS_MASK_US = 0xf,
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TEGRA_AUDIOCIF_CTRL_AUDIO_CHANNELS_MASK =
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TEGRA_AUDIOCIF_CTRL_AUDIO_CHANNELS_MASK_US <<
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TEGRA_AUDIOCIF_CTRL_AUDIO_CHANNELS_SHIFT,
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/* Channel count minus 1 */
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TEGRA_AUDIOCIF_CTRL_CLIENT_CHANNELS_SHIFT = 16,
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TEGRA_AUDIOCIF_CTRL_CLIENT_CHANNELS_MASK_US = 0xf,
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TEGRA_AUDIOCIF_CTRL_CLIENT_CHANNELS_MASK =
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TEGRA_AUDIOCIF_CTRL_CLIENT_CHANNELS_MASK_US <<
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TEGRA_AUDIOCIF_CTRL_CLIENT_CHANNELS_SHIFT,
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TEGRA_AUDIOCIF_BITS_4 = 0,
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TEGRA_AUDIOCIF_BITS_8 = 1,
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TEGRA_AUDIOCIF_BITS_12 = 2,
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TEGRA_AUDIOCIF_BITS_16 = 3,
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TEGRA_AUDIOCIF_BITS_20 = 4,
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TEGRA_AUDIOCIF_BITS_24 = 5,
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TEGRA_AUDIOCIF_BITS_28 = 6,
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TEGRA_AUDIOCIF_BITS_32 = 7,
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TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT = 12,
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TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_MASK =
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7 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_4 =
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TEGRA_AUDIOCIF_BITS_4 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_8 =
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TEGRA_AUDIOCIF_BITS_8 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_12 =
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TEGRA_AUDIOCIF_BITS_12 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_16 =
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TEGRA_AUDIOCIF_BITS_16 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_20 =
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TEGRA_AUDIOCIF_BITS_20 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_24 =
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TEGRA_AUDIOCIF_BITS_24 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_28 =
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TEGRA_AUDIOCIF_BITS_28 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_32 =
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TEGRA_AUDIOCIF_BITS_32 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT = 8,
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TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_MASK =
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7 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_4 =
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TEGRA_AUDIOCIF_BITS_4 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_8 =
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TEGRA_AUDIOCIF_BITS_8 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_12 =
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TEGRA_AUDIOCIF_BITS_12 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_16 =
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TEGRA_AUDIOCIF_BITS_16 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_20 =
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TEGRA_AUDIOCIF_BITS_20 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_24 =
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TEGRA_AUDIOCIF_BITS_24 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_28 =
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TEGRA_AUDIOCIF_BITS_28 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT,
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TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_32 =
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TEGRA_AUDIOCIF_BITS_32 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT,
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TEGRA_AUDIOCIF_EXPAND_ZERO = 0,
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TEGRA_AUDIOCIF_EXPAND_ONE = 1,
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TEGRA_AUDIOCIF_EXPAND_LFSR = 2,
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TEGRA_AUDIOCIF_CTRL_EXPAND_SHIFT = 6,
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TEGRA_AUDIOCIF_CTRL_EXPAND_MASK = 3 << TEGRA_AUDIOCIF_CTRL_EXPAND_SHIFT,
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TEGRA_AUDIOCIF_CTRL_EXPAND_ZERO =
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TEGRA_AUDIOCIF_EXPAND_ZERO << TEGRA_AUDIOCIF_CTRL_EXPAND_SHIFT,
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TEGRA_AUDIOCIF_CTRL_EXPAND_ONE =
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TEGRA_AUDIOCIF_EXPAND_ONE << TEGRA_AUDIOCIF_CTRL_EXPAND_SHIFT,
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TEGRA_AUDIOCIF_CTRL_EXPAND_LFSR =
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TEGRA_AUDIOCIF_EXPAND_LFSR << TEGRA_AUDIOCIF_CTRL_EXPAND_SHIFT,
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TEGRA_AUDIOCIF_STEREO_CONV_CH0 = 0,
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TEGRA_AUDIOCIF_STEREO_CONV_CH1 = 1,
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TEGRA_AUDIOCIF_STEREO_CONV_AVG = 2,
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TEGRA_AUDIOCIF_CTRL_STEREO_CONV_SHIFT = 4,
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TEGRA_AUDIOCIF_CTRL_STEREO_CONV_MASK =
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3 << TEGRA_AUDIOCIF_CTRL_STEREO_CONV_SHIFT,
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TEGRA_AUDIOCIF_CTRL_STEREO_CONV_CH0 =
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TEGRA_AUDIOCIF_STEREO_CONV_CH0 <<
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TEGRA_AUDIOCIF_CTRL_STEREO_CONV_SHIFT,
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TEGRA_AUDIOCIF_CTRL_STEREO_CONV_CH1 =
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TEGRA_AUDIOCIF_STEREO_CONV_CH1 <<
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TEGRA_AUDIOCIF_CTRL_STEREO_CONV_SHIFT,
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TEGRA_AUDIOCIF_CTRL_STEREO_CONV_AVG =
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TEGRA_AUDIOCIF_STEREO_CONV_AVG <<
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TEGRA_AUDIOCIF_CTRL_STEREO_CONV_SHIFT,
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TEGRA_AUDIOCIF_CTRL_REPLICATE = 3,
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TEGRA_AUDIOCIF_DIRECTION_TX = 0,
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TEGRA_AUDIOCIF_DIRECTION_RX = 1,
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TEGRA_AUDIOCIF_CTRL_DIRECTION_SHIFT = 2,
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TEGRA_AUDIOCIF_CTRL_DIRECTION_MASK =
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1 << TEGRA_AUDIOCIF_CTRL_DIRECTION_SHIFT,
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TEGRA_AUDIOCIF_CTRL_DIRECTION_TX =
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TEGRA_AUDIOCIF_DIRECTION_TX <<
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TEGRA_AUDIOCIF_CTRL_DIRECTION_SHIFT,
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TEGRA_AUDIOCIF_CTRL_DIRECTION_RX =
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TEGRA_AUDIOCIF_DIRECTION_RX <<
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TEGRA_AUDIOCIF_CTRL_DIRECTION_SHIFT,
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TEGRA_AUDIOCIF_TRUNCATE_ROUND = 0,
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TEGRA_AUDIOCIF_TRUNCATE_CHOP = 1,
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TEGRA_AUDIOCIF_CTRL_TRUNCATE_SHIFT = 1,
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TEGRA_AUDIOCIF_CTRL_TRUNCATE_MASK =
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1 << TEGRA_AUDIOCIF_CTRL_TRUNCATE_SHIFT,
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TEGRA_AUDIOCIF_CTRL_TRUNCATE_ROUND =
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TEGRA_AUDIOCIF_TRUNCATE_ROUND <<
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TEGRA_AUDIOCIF_CTRL_TRUNCATE_SHIFT,
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TEGRA_AUDIOCIF_CTRL_TRUNCATE_CHOP =
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TEGRA_AUDIOCIF_TRUNCATE_CHOP <<
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TEGRA_AUDIOCIF_CTRL_TRUNCATE_SHIFT,
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TEGRA_AUDIOCIF_MONO_CONV_ZERO = 0,
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TEGRA_AUDIOCIF_MONO_CONV_COPY = 1,
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TEGRA_AUDIOCIF_CTRL_MONO_CONV_SHIFT = 0,
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TEGRA_AUDIOCIF_CTRL_MONO_CONV_MASK =
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1 << TEGRA_AUDIOCIF_CTRL_MONO_CONV_SHIFT,
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TEGRA_AUDIOCIF_CTRL_MONO_CONV_ZERO =
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TEGRA_AUDIOCIF_MONO_CONV_ZERO <<
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TEGRA_AUDIOCIF_CTRL_MONO_CONV_SHIFT,
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TEGRA_AUDIOCIF_CTRL_MONO_CONV_COPY =
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TEGRA_AUDIOCIF_MONO_CONV_COPY <<
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TEGRA_AUDIOCIF_CTRL_MONO_CONV_SHIFT,
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/* Registers within TEGRA_AUDIO_CLUSTER_BASE */
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TEGRA_AHUB_CHANNEL_CTRL = 0x0,
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TEGRA_AHUB_CHANNEL_CTRL_STRIDE = 0x20,
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TEGRA_AHUB_CHANNEL_CTRL_COUNT = 4,
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TEGRA_AHUB_CHANNEL_CTRL_TX_EN = 1 << 31,
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TEGRA_AHUB_CHANNEL_CTRL_RX_EN = 1 << 30,
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TEGRA_AHUB_CHANNEL_CTRL_LOOPBACK = 1 << 29,
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TEGRA_AHUB_CHANNEL_CTRL_TX_THRESHOLD_SHIFT = 16,
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TEGRA_AHUB_CHANNEL_CTRL_TX_THRESHOLD_MASK_US = 0xff,
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TEGRA_AHUB_CHANNEL_CTRL_TX_THRESHOLD_MASK =
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TEGRA_AHUB_CHANNEL_CTRL_TX_THRESHOLD_MASK_US <<
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TEGRA_AHUB_CHANNEL_CTRL_TX_THRESHOLD_SHIFT,
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TEGRA_AHUB_CHANNEL_CTRL_RX_THRESHOLD_SHIFT = 8,
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TEGRA_AHUB_CHANNEL_CTRL_RX_THRESHOLD_MASK_US = 0xff,
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TEGRA_AHUB_CHANNEL_CTRL_RX_THRESHOLD_MASK =
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TEGRA_AHUB_CHANNEL_CTRL_RX_THRESHOLD_MASK_US <<
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TEGRA_AHUB_CHANNEL_CTRL_RX_THRESHOLD_SHIFT,
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TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_EN = 1 << 6,
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TEGRA_PACK_8_4 = 2,
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TEGRA_PACK_16 = 3,
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TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_SHIFT = 4,
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TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_MASK_US = 3,
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TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_MASK =
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TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_MASK_US <<
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TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_SHIFT,
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TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_8_4 =
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TEGRA_PACK_8_4 << TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_SHIFT,
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TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_16 =
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TEGRA_PACK_16 << TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_SHIFT,
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TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_EN = 1 << 2,
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TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_SHIFT = 0,
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TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_MASK_US = 3,
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TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_MASK =
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TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_MASK_US <<
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TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_SHIFT,
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TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_8_4 =
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TEGRA_PACK_8_4 << TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_SHIFT,
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TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_16 =
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TEGRA_PACK_16 << TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_SHIFT,
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/* TEGRA_AHUB_CHANNEL_CLEAR */
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TEGRA_AHUB_CHANNEL_CLEAR = 0x4,
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TEGRA_AHUB_CHANNEL_CLEAR_STRIDE = 0x20,
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TEGRA_AHUB_CHANNEL_CLEAR_COUNT = 4,
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TEGRA_AHUB_CHANNEL_CLEAR_TX_SOFT_RESET = 1 << 31,
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TEGRA_AHUB_CHANNEL_CLEAR_RX_SOFT_RESET = 1 << 30,
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TEGRA_AHUB_CHANNEL_STATUS = 0x8,
|
||||
TEGRA_AHUB_CHANNEL_STATUS_STRIDE = 0x20,
|
||||
TEGRA_AHUB_CHANNEL_STATUS_COUNT = 4,
|
||||
TEGRA_AHUB_CHANNEL_STATUS_TX_FREE_SHIFT = 24,
|
||||
TEGRA_AHUB_CHANNEL_STATUS_TX_FREE_MASK_US = 0xff,
|
||||
TEGRA_AHUB_CHANNEL_STATUS_TX_FREE_MASK =
|
||||
TEGRA_AHUB_CHANNEL_STATUS_TX_FREE_MASK_US <<
|
||||
TEGRA_AHUB_CHANNEL_STATUS_TX_FREE_SHIFT,
|
||||
TEGRA_AHUB_CHANNEL_STATUS_RX_FREE_SHIFT = 16,
|
||||
TEGRA_AHUB_CHANNEL_STATUS_RX_FREE_MASK_US = 0xff,
|
||||
TEGRA_AHUB_CHANNEL_STATUS_RX_FREE_MASK =
|
||||
TEGRA_AHUB_CHANNEL_STATUS_RX_FREE_MASK_US <<
|
||||
TEGRA_AHUB_CHANNEL_STATUS_RX_FREE_SHIFT,
|
||||
TEGRA_AHUB_CHANNEL_STATUS_TX_TRIG = 1 << 1,
|
||||
TEGRA_AHUB_CHANNEL_STATUS_RX_TRIG = 1 << 0,
|
||||
|
||||
TEGRA_AHUB_CHANNEL_TXFIFO = 0xc,
|
||||
TEGRA_AHUB_CHANNEL_TXFIFO_STRIDE = 0x20,
|
||||
TEGRA_AHUB_CHANNEL_TXFIFO_COUNT = 4,
|
||||
|
||||
TEGRA_AHUB_CHANNEL_RXFIFO = 0x10,
|
||||
TEGRA_AHUB_CHANNEL_RXFIFO_STRIDE = 0x20,
|
||||
TEGRA_AHUB_CHANNEL_RXFIFO_COUNT = 4,
|
||||
|
||||
TEGRA_AHUB_CIF_TX_CTRL = 0x14,
|
||||
TEGRA_AHUB_CIF_TX_CTRL_STRIDE = 0x20,
|
||||
TEGRA_AHUB_CIF_TX_CTRL_COUNT = 4,
|
||||
/* Uses field from TEGRA_AUDIOCIF_CTRL_* */
|
||||
|
||||
TEGRA_AHUB_CIF_RX_CTRL = 0x18,
|
||||
TEGRA_AHUB_CIF_RX_CTRL_STRIDE = 0x20,
|
||||
TEGRA_AHUB_CIF_RX_CTRL_COUNT = 4,
|
||||
/* Uses field from TEGRA_AUDIOCIF_CTRL_* */
|
||||
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL = 0x80,
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_MASTER_FIFO_FULL_CNT_SHIFT = 28,
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_MASTER_FIFO_FULL_CNT_MASK_US = 0xf,
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_MASTER_FIFO_FULL_CNT_MASK =
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_MASTER_FIFO_FULL_CNT_MASK_US <<
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_MASTER_FIFO_FULL_CNT_SHIFT,
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_TIMEOUT_CNT_SHIFT = 16,
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_TIMEOUT_CNT_MASK_US = 0xfff,
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_TIMEOUT_CNT_MASK =
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_TIMEOUT_CNT_MASK_US <<
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_TIMEOUT_CNT_SHIFT,
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_IDLE_CNT_SHIFT = 4,
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_IDLE_CNT_MASK_US = 0xfff,
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_IDLE_CNT_MASK =
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_IDLE_CNT_MASK_US <<
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_IDLE_CNT_SHIFT,
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_CG_EN = 1 << 2,
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_CLEAR_TIMEOUT_CNTR = 1 << 1,
|
||||
TEGRA_AHUB_CONFIG_LINK_CTRL_SOFT_RESET = 1 << 0,
|
||||
|
||||
TEGRA_AHUB_MISC_CTRL = 0x84,
|
||||
TEGRA_AHUB_MISC_CTRL_AUDIO_ACTIVE = 1 << 31,
|
||||
TEGRA_AHUB_MISC_CTRL_AUDIO_CG_EN = 1 << 8,
|
||||
TEGRA_AHUB_MISC_CTRL_AUDIO_OBS_SEL_SHIFT = 0,
|
||||
TEGRA_AHUB_MISC_CTRL_AUDIO_OBS_SEL_MASK =
|
||||
0x1f << TEGRA_AHUB_MISC_CTRL_AUDIO_OBS_SEL_SHIFT,
|
||||
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS = 0x88,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH3_RX_CIF_FIFO_FULL = 1 << 31,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH3_TX_CIF_FIFO_FULL = 1 << 30,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH2_RX_CIF_FIFO_FULL = 1 << 29,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH2_TX_CIF_FIFO_FULL = 1 << 28,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH1_RX_CIF_FIFO_FULL = 1 << 27,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH1_TX_CIF_FIFO_FULL = 1 << 26,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH0_RX_CIF_FIFO_FULL = 1 << 25,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH0_TX_CIF_FIFO_FULL = 1 << 24,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH3_RX_CIF_FIFO_EMPTY = 1 << 23,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH3_TX_CIF_FIFO_EMPTY = 1 << 22,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH2_RX_CIF_FIFO_EMPTY = 1 << 21,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH2_TX_CIF_FIFO_EMPTY = 1 << 20,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH1_RX_CIF_FIFO_EMPTY = 1 << 19,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH1_TX_CIF_FIFO_EMPTY = 1 << 18,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH0_RX_CIF_FIFO_EMPTY = 1 << 17,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH0_TX_CIF_FIFO_EMPTY = 1 << 16,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH3_RX_DMA_FIFO_FULL = 1 << 15,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH3_TX_DMA_FIFO_FULL = 1 << 14,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH2_RX_DMA_FIFO_FULL = 1 << 13,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH2_TX_DMA_FIFO_FULL = 1 << 12,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH1_RX_DMA_FIFO_FULL = 1 << 11,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH1_TX_DMA_FIFO_FULL = 1 << 10,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH0_RX_DMA_FIFO_FULL = 1 << 9,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH0_TX_DMA_FIFO_FULL = 1 << 8,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH3_RX_DMA_FIFO_EMPTY = 1 << 7,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH3_TX_DMA_FIFO_EMPTY = 1 << 6,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH2_RX_DMA_FIFO_EMPTY = 1 << 5,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH2_TX_DMA_FIFO_EMPTY = 1 << 4,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH1_RX_DMA_FIFO_EMPTY = 1 << 3,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH1_TX_DMA_FIFO_EMPTY = 1 << 2,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH0_RX_DMA_FIFO_EMPTY = 1 << 1,
|
||||
TEGRA_AHUB_APBDMA_LIVE_STATUS_CH0_TX_DMA_FIFO_EMPTY = 1 << 0,
|
||||
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS = 0x8c,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S4_RX_FIFO_FULL = 1 << 29,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S4_TX_FIFO_FULL = 1 << 28,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S3_RX_FIFO_FULL = 1 << 27,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S3_TX_FIFO_FULL = 1 << 26,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S2_RX_FIFO_FULL = 1 << 25,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S2_TX_FIFO_FULL = 1 << 24,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S1_RX_FIFO_FULL = 1 << 23,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S1_TX_FIFO_FULL = 1 << 22,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S0_RX_FIFO_FULL = 1 << 21,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S0_TX_FIFO_FULL = 1 << 20,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S4_RX_FIFO_ENABLED = 1 << 19,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S4_TX_FIFO_ENABLED = 1 << 18,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S3_RX_FIFO_ENABLED = 1 << 17,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S3_TX_FIFO_ENABLED = 1 << 16,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S2_RX_FIFO_ENABLED = 1 << 15,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S2_TX_FIFO_ENABLED = 1 << 14,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S1_RX_FIFO_ENABLED = 1 << 13,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S1_TX_FIFO_ENABLED = 1 << 12,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S0_RX_FIFO_ENABLED = 1 << 11,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S0_TX_FIFO_ENABLED = 1 << 10,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S4_RX_FIFO_EMPTY = 1 << 9,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S4_TX_FIFO_EMPTY = 1 << 8,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S3_RX_FIFO_EMPTY = 1 << 7,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S3_TX_FIFO_EMPTY = 1 << 6,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S2_RX_FIFO_EMPTY = 1 << 5,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S2_TX_FIFO_EMPTY = 1 << 4,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S1_RX_FIFO_EMPTY = 1 << 3,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S1_TX_FIFO_EMPTY = 1 << 2,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S0_RX_FIFO_EMPTY = 1 << 1,
|
||||
TEGRA_AHUB_I2S_LIVE_STATUS_I2S0_TX_FIFO_EMPTY = 1 << 0,
|
||||
|
||||
TEGRA_AHUB_DAM_LIVE_STATUS = 0x90,
|
||||
TEGRA_AHUB_DAM_LIVE_STATUS_STRIDE = 0x8,
|
||||
TEGRA_AHUB_DAM_LIVE_STATUS_COUNT = 3,
|
||||
TEGRA_AHUB_DAM_LIVE_STATUS_TX_ENABLED = 1 << 26,
|
||||
TEGRA_AHUB_DAM_LIVE_STATUS_RX1_ENABLED = 1 << 25,
|
||||
TEGRA_AHUB_DAM_LIVE_STATUS_RX0_ENABLED = 1 << 24,
|
||||
TEGRA_AHUB_DAM_LIVE_STATUS_TXFIFO_FULL = 1 << 15,
|
||||
TEGRA_AHUB_DAM_LIVE_STATUS_RX1FIFO_FULL = 1 << 9,
|
||||
TEGRA_AHUB_DAM_LIVE_STATUS_RX0FIFO_FULL = 1 << 8,
|
||||
TEGRA_AHUB_DAM_LIVE_STATUS_TXFIFO_EMPTY = 1 << 7,
|
||||
TEGRA_AHUB_DAM_LIVE_STATUS_RX1FIFO_EMPTY = 1 << 1,
|
||||
TEGRA_AHUB_DAM_LIVE_STATUS_RX0FIFO_EMPTY = 1 << 0,
|
||||
|
||||
TEGRA_AHUB_SPDIF_LIVE_STATUS = 0xa8,
|
||||
TEGRA_AHUB_SPDIF_LIVE_STATUS_USER_TX_ENABLED = 1 << 11,
|
||||
TEGRA_AHUB_SPDIF_LIVE_STATUS_USER_RX_ENABLED = 1 << 10,
|
||||
TEGRA_AHUB_SPDIF_LIVE_STATUS_DATA_TX_ENABLED = 1 << 9,
|
||||
TEGRA_AHUB_SPDIF_LIVE_STATUS_DATA_RX_ENABLED = 1 << 8,
|
||||
TEGRA_AHUB_SPDIF_LIVE_STATUS_USER_TXFIFO_FULL = 1 << 7,
|
||||
TEGRA_AHUB_SPDIF_LIVE_STATUS_USER_RXFIFO_FULL = 1 << 6,
|
||||
TEGRA_AHUB_SPDIF_LIVE_STATUS_DATA_TXFIFO_FULL = 1 << 5,
|
||||
TEGRA_AHUB_SPDIF_LIVE_STATUS_DATA_RXFIFO_FULL = 1 << 4,
|
||||
TEGRA_AHUB_SPDIF_LIVE_STATUS_USER_TXFIFO_EMPTY = 1 << 3,
|
||||
TEGRA_AHUB_SPDIF_LIVE_STATUS_USER_RXFIFO_EMPTY = 1 << 2,
|
||||
TEGRA_AHUB_SPDIF_LIVE_STATUS_DATA_TXFIFO_EMPTY = 1 << 1,
|
||||
TEGRA_AHUB_SPDIF_LIVE_STATUS_DATA_RXFIFO_EMPTY = 1 << 0,
|
||||
|
||||
TEGRA_AHUB_I2S_INT_MASK = 0xb0,
|
||||
TEGRA_AHUB_DAM_INT_MASK = 0xb4,
|
||||
TEGRA_AHUB_SPDIF_INT_MASK = 0xbc,
|
||||
TEGRA_AHUB_APBIF_INT_MASK = 0xc0,
|
||||
TEGRA_AHUB_I2S_INT_STATUS = 0xc8,
|
||||
TEGRA_AHUB_DAM_INT_STATUS = 0xcc,
|
||||
TEGRA_AHUB_SPDIF_INT_STATUS = 0xd4,
|
||||
TEGRA_AHUB_APBIF_INT_STATUS = 0xd8,
|
||||
TEGRA_AHUB_I2S_INT_SOURCE = 0xe0,
|
||||
TEGRA_AHUB_DAM_INT_SOURCE = 0xe4,
|
||||
TEGRA_AHUB_SPDIF_INT_SOURCE = 0xec,
|
||||
TEGRA_AHUB_APBIF_INT_SOURCE = 0xf0,
|
||||
TEGRA_AHUB_I2S_INT_SET = 0xf8,
|
||||
TEGRA_AHUB_DAM_INT_SET = 0xfc,
|
||||
TEGRA_AHUB_SPDIF_INT_SET = 0x100,
|
||||
TEGRA_AHUB_APBIF_INT_SET = 0x104,
|
||||
|
||||
TEGRA_AHUB_AUDIO_RX = 0x0,
|
||||
TEGRA_AHUB_AUDIO_RX_STRIDE = 0x4,
|
||||
TEGRA_AHUB_AUDIO_RX_COUNT = 17,
|
||||
};
|
||||
|
||||
#endif /* _TEGRA_I2C_H_ */
|
||||
|
|
@ -71,6 +71,15 @@ config SOUND_IVYBRIDGE
|
|||
sometimes called Azalia. The audio codec is detected using a
|
||||
semi-automatic mechanism.
|
||||
|
||||
config I2S_TEGRA
|
||||
bool "Enable I2S support for Nvidia Tegra SoCs"
|
||||
depends on I2S
|
||||
select TEGRA124_DMA
|
||||
help
|
||||
Nvidia Tegra SoCs support several I2S interfaces for sending audio
|
||||
data to an audio codec. This option enables support for this,
|
||||
using one of the available audio codec drivers.
|
||||
|
||||
config SOUND_MAX98088
|
||||
bool "Support Maxim max98088 audio codec"
|
||||
depends on I2S
|
||||
|
|
|
|||
|
|
@ -11,6 +11,7 @@ obj-$(CONFIG_I2S_SAMSUNG) += samsung-i2s.o
|
|||
obj-$(CONFIG_SOUND_SANDBOX) += sandbox.o
|
||||
obj-$(CONFIG_I2S_ROCKCHIP) += rockchip_i2s.o rockchip_sound.o
|
||||
obj-$(CONFIG_I2S_SAMSUNG) += samsung_sound.o
|
||||
obj-$(CONFIG_I2S_TEGRA) += tegra_ahub.o
|
||||
obj-$(CONFIG_SOUND_WM8994) += wm8994.o
|
||||
obj-$(CONFIG_SOUND_MAX98088) += max98088.o maxim_codec.o
|
||||
obj-$(CONFIG_SOUND_MAX98090) += max98090.o maxim_codec.o
|
||||
|
|
|
|||
256
drivers/sound/tegra_ahub.c
Normal file
256
drivers/sound/tegra_ahub.c
Normal file
|
|
@ -0,0 +1,256 @@
|
|||
// SPDX-License-Identifier: GPL-2.0+159
|
||||
/*
|
||||
* Take from dc tegra_ahub.c
|
||||
*
|
||||
* Copyright 2018 Google LLC
|
||||
*/
|
||||
|
||||
#define LOG_CATEGORY UCLASS_MISC
|
||||
|
||||
#include <common.h>
|
||||
#include <dm.h>
|
||||
#include <i2s.h>
|
||||
#include <misc.h>
|
||||
#include <asm/io.h>
|
||||
#include <asm/arch-tegra/tegra_ahub.h>
|
||||
#include <asm/arch-tegra/tegra_i2s.h>
|
||||
#include "tegra_i2s_priv.h"
|
||||
|
||||
struct tegra_ahub_priv {
|
||||
struct apbif_regs *apbif_regs;
|
||||
struct xbar_regs *xbar_regs;
|
||||
u32 full_mask;
|
||||
int capacity_words; /* FIFO capacity in words */
|
||||
|
||||
/*
|
||||
* This is unset intially, but is set by tegra_ahub_ioctl() called
|
||||
* from the misc_ioctl() in tegra_sound_probe()
|
||||
*/
|
||||
struct udevice *i2s;
|
||||
struct udevice *dma;
|
||||
};
|
||||
|
||||
static int tegra_ahub_xbar_enable_i2s(struct xbar_regs *regs, int i2s_id)
|
||||
{
|
||||
/*
|
||||
* Enables I2S as the receiver of APBIF by writing APBIF_TX0 (0x01) to
|
||||
* the rx0 register
|
||||
*/
|
||||
switch (i2s_id) {
|
||||
case 0:
|
||||
writel(1, ®s->i2s0_rx0);
|
||||
break;
|
||||
case 1:
|
||||
writel(1, ®s->i2s1_rx0);
|
||||
break;
|
||||
case 2:
|
||||
writel(1, ®s->i2s2_rx0);
|
||||
break;
|
||||
case 3:
|
||||
writel(1, ®s->i2s3_rx0);
|
||||
break;
|
||||
case 4:
|
||||
writel(1, ®s->i2s4_rx0);
|
||||
break;
|
||||
default:
|
||||
log_err("Invalid I2S component id: %d\n", i2s_id);
|
||||
return -EINVAL;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tegra_ahub_apbif_is_full(struct udevice *dev)
|
||||
{
|
||||
struct tegra_ahub_priv *priv = dev_get_priv(dev);
|
||||
|
||||
return readl(&priv->apbif_regs->apbdma_live_stat) & priv->full_mask;
|
||||
}
|
||||
|
||||
/**
|
||||
* tegra_ahub_wait_for_space() - Wait for space in the FIFO
|
||||
*
|
||||
* @return 0 if OK, -ETIMEDOUT if no space was available in time
|
||||
*/
|
||||
static int tegra_ahub_wait_for_space(struct udevice *dev)
|
||||
{
|
||||
int i = 100000;
|
||||
ulong start;
|
||||
|
||||
/* Busy-wait initially, since this should take almost no time */
|
||||
while (i--) {
|
||||
if (!tegra_ahub_apbif_is_full(dev))
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Failed, so do a slower loop for 100ms */
|
||||
start = get_timer(0);
|
||||
while (tegra_ahub_apbif_is_full(dev)) {
|
||||
if (get_timer(start) > 100)
|
||||
return -ETIMEDOUT;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tegra_ahub_apbif_send(struct udevice *dev, int offset,
|
||||
const void *buf, int len)
|
||||
{
|
||||
struct tegra_ahub_priv *priv = dev_get_priv(dev);
|
||||
const u32 *data = (const u32 *)buf;
|
||||
ssize_t written = 0;
|
||||
|
||||
if (len % sizeof(*data)) {
|
||||
log_err("Data size (%zd) must be aligned to %zd.\n", len,
|
||||
sizeof(*data));
|
||||
return -EFAULT;
|
||||
}
|
||||
while (written < len) {
|
||||
int ret = tegra_ahub_wait_for_space(dev);
|
||||
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
writel(*data++, &priv->apbif_regs->channel0_txfifo);
|
||||
written += sizeof(*data);
|
||||
}
|
||||
|
||||
return written;
|
||||
}
|
||||
|
||||
static void tegra_ahub_apbif_set_cif(struct udevice *dev, u32 value)
|
||||
{
|
||||
struct tegra_ahub_priv *priv = dev_get_priv(dev);
|
||||
|
||||
writel(value, &priv->apbif_regs->channel0_cif_tx0_ctrl);
|
||||
}
|
||||
|
||||
static void tegra_ahub_apbif_enable_channel0(struct udevice *dev,
|
||||
int fifo_threshold)
|
||||
{
|
||||
struct tegra_ahub_priv *priv = dev_get_priv(dev);
|
||||
|
||||
u32 ctrl = TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_EN |
|
||||
TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_16 |
|
||||
TEGRA_AHUB_CHANNEL_CTRL_TX_EN;
|
||||
|
||||
fifo_threshold--; /* fifo_threshold starts from 1 */
|
||||
ctrl |= (fifo_threshold << TEGRA_AHUB_CHANNEL_CTRL_TX_THRESHOLD_SHIFT);
|
||||
writel(ctrl, &priv->apbif_regs->channel0_ctrl);
|
||||
}
|
||||
|
||||
static u32 tegra_ahub_get_cif(bool is_receive, uint channels,
|
||||
uint bits_per_sample, uint fifo_threshold)
|
||||
{
|
||||
uint audio_bits = (bits_per_sample >> 2) - 1;
|
||||
u32 val;
|
||||
|
||||
channels--; /* Channels in CIF starts from 1 */
|
||||
fifo_threshold--; /* FIFO threshold starts from 1 */
|
||||
/* Assume input and output are always using same channel / bits */
|
||||
val = channels << TEGRA_AUDIOCIF_CTRL_AUDIO_CHANNELS_SHIFT |
|
||||
channels << TEGRA_AUDIOCIF_CTRL_CLIENT_CHANNELS_SHIFT |
|
||||
audio_bits << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT |
|
||||
audio_bits << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT |
|
||||
fifo_threshold << TEGRA_AUDIOCIF_CTRL_FIFO_THRESHOLD_SHIFT |
|
||||
(is_receive ? TEGRA_AUDIOCIF_DIRECTION_RX <<
|
||||
TEGRA_AUDIOCIF_CTRL_DIRECTION_SHIFT : 0);
|
||||
|
||||
return val;
|
||||
}
|
||||
|
||||
static int tegra_ahub_enable(struct udevice *dev)
|
||||
{
|
||||
struct tegra_ahub_priv *priv = dev_get_priv(dev);
|
||||
struct i2s_uc_priv *uc_priv = dev_get_uclass_priv(priv->i2s);
|
||||
u32 cif_ctrl = 0;
|
||||
int ret;
|
||||
|
||||
/* We use APBIF channel0 as a sender */
|
||||
priv->full_mask = TEGRA_AHUB_APBDMA_LIVE_STATUS_CH0_TX_CIF_FIFO_FULL;
|
||||
priv->capacity_words = 8;
|
||||
|
||||
/*
|
||||
* FIFO is inactive until (fifo_threshold) of words are sent. For
|
||||
* better performance, we want to set it to half of capacity.
|
||||
*/
|
||||
u32 fifo_threshold = priv->capacity_words / 2;
|
||||
|
||||
/*
|
||||
* Setup audio client interface (ACIF): APBIF (channel0) as sender and
|
||||
* I2S as receiver
|
||||
*/
|
||||
cif_ctrl = tegra_ahub_get_cif(true, uc_priv->channels,
|
||||
uc_priv->bitspersample, fifo_threshold);
|
||||
tegra_i2s_set_cif_tx_ctrl(priv->i2s, cif_ctrl);
|
||||
|
||||
cif_ctrl = tegra_ahub_get_cif(false, uc_priv->channels,
|
||||
uc_priv->bitspersample, fifo_threshold);
|
||||
tegra_ahub_apbif_set_cif(dev, cif_ctrl);
|
||||
tegra_ahub_apbif_enable_channel0(dev, fifo_threshold);
|
||||
|
||||
ret = tegra_ahub_xbar_enable_i2s(priv->xbar_regs, uc_priv->id);
|
||||
if (ret)
|
||||
return ret;
|
||||
log_debug("ahub: channels=%d, bitspersample=%d, cif_ctrl=%x, fifo_threshold=%d, id=%d\n",
|
||||
uc_priv->channels, uc_priv->bitspersample, cif_ctrl,
|
||||
fifo_threshold, uc_priv->id);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tegra_ahub_ioctl(struct udevice *dev, unsigned long request,
|
||||
void *buf)
|
||||
{
|
||||
struct tegra_ahub_priv *priv = dev_get_priv(dev);
|
||||
|
||||
if (request != AHUB_MISCOP_SET_I2S)
|
||||
return -ENOSYS;
|
||||
|
||||
priv->i2s = *(struct udevice **)buf;
|
||||
log_debug("i2s set to '%s'\n", priv->i2s->name);
|
||||
|
||||
return tegra_ahub_enable(dev);
|
||||
}
|
||||
|
||||
static int tegra_ahub_probe(struct udevice *dev)
|
||||
{
|
||||
struct tegra_ahub_priv *priv = dev_get_priv(dev);
|
||||
ulong addr;
|
||||
|
||||
addr = dev_read_addr_index(dev, 0);
|
||||
if (addr == FDT_ADDR_T_NONE) {
|
||||
log_debug("Invalid apbif address\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
priv->apbif_regs = (struct apbif_regs *)addr;
|
||||
|
||||
addr = dev_read_addr_index(dev, 1);
|
||||
if (addr == FDT_ADDR_T_NONE) {
|
||||
log_debug("Invalid xbar address\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
priv->xbar_regs = (struct xbar_regs *)addr;
|
||||
log_debug("ahub apbif_regs=%p, xbar_regs=%p\n", priv->apbif_regs,
|
||||
priv->xbar_regs);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct misc_ops tegra_ahub_ops = {
|
||||
.write = tegra_ahub_apbif_send,
|
||||
.ioctl = tegra_ahub_ioctl,
|
||||
};
|
||||
|
||||
static const struct udevice_id tegra_ahub_ids[] = {
|
||||
{ .compatible = "nvidia,tegra124-ahub" },
|
||||
{ }
|
||||
};
|
||||
|
||||
U_BOOT_DRIVER(tegra_ahub) = {
|
||||
.name = "tegra_ahub",
|
||||
.id = UCLASS_MISC,
|
||||
.of_match = tegra_ahub_ids,
|
||||
.ops = &tegra_ahub_ops,
|
||||
.probe = tegra_ahub_probe,
|
||||
.priv_auto_alloc_size = sizeof(struct tegra_ahub_priv),
|
||||
};
|
||||
Loading…
Reference in New Issue
Block a user