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 ---

Changes in v2: - Fix 'I2C' typo

arch/arm/include/asm/arch-tegra/tegra_ahub.h | 475 +++++++++++++++++++ drivers/sound/Kconfig | 9 + drivers/sound/Makefile | 1 + drivers/sound/tegra_ahub.c | 256 ++++++++++ 4 files changed, 741 insertions(+) create mode 100644 arch/arm/include/asm/arch-tegra/tegra_ahub.h create mode 100644 drivers/sound/tegra_ahub.c

diff --git a/arch/arm/include/asm/arch-tegra/tegra_ahub.h b/arch/arm/include/asm/arch-tegra/tegra_ahub.h new file mode 100644 index 00000000000..96d542a91ca --- /dev/null +++ b/arch/arm/include/asm/arch-tegra/tegra_ahub.h @@ -0,0 +1,475 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * tegra_ahub.h - Definitions for Tegra124 audio hub driver + * Taken from dc tegra_ahub.h + * + * Copyright 2018 Google LLC + * Copyright (c) 2013, NVIDIA CORPORATION. All rights reserved. + */ + +#ifndef _TEGRA_AHUB_H_ +#define _TEGRA_AHUB_H_ + +/* + * Each TX CIF transmits data into the XBAR. Each RX CIF can receive audio + * transmitted by a particular TX CIF. + */ +struct xbar_regs { + u32 apbif_rx0; /* AUDIO_APBIF_RX0, offset 0x00 */ + u32 apbif_rx1; /* AUDIO_APBIF_RX1, offset 0x04 */ + u32 apbif_rx2; /* AUDIO_APBIF_RX2, offset 0x08 */ + u32 apbif_rx3; /* AUDIO_APBIF_RX3, offset 0x0C */ + + u32 i2s0_rx0; /* AUDIO_I2S0_RX0, offset 0x10 */ + u32 i2s1_rx0; /* AUDIO_I2S1_RX0, offset 0x14 */ + u32 i2s2_rx0; /* AUDIO_I2S2_RX0, offset 0x18 */ + u32 i2s3_rx0; /* AUDIO_I2S3_RX0, offset 0x1C */ + u32 i2s4_rx0; /* AUDIO_I2S4_RX0, offset 0x20 */ + + u32 dam0_rx0; /* AUDIO_DAM0_RX0, offset 0x24 */ + u32 dam0_rx1; /* AUDIO_DAM0_RX1, offset 0x28 */ + u32 dam1_rx0; /* AUDIO_DAM1_RX0, offset 0x2C */ + u32 dam1_rx1; /* AUDIO_DAM1_RX1, offset 0x30 */ + u32 dam2_rx0; /* AUDIO_DAM2_RX0, offset 0x34 */ + u32 dam2_rx1; /* AUDIO_DAM2_RX1, offset 0x38 */ + + u32 spdif_rx0; /* AUDIO_SPDIF_RX0, offset 0x3C */ + u32 spdif_rx1; /* AUDIO_SPDIF_RX1, offset 0x40 */ + + u32 apbif_rx4; /* AUDIO_APBIF_RX4, offset 0x44 */ + u32 apbif_rx5; /* AUDIO_APBIF_RX4, offset 0x48 */ + u32 apbif_rx6; /* AUDIO_APBIF_RX4, offset 0x4C */ + u32 apbif_rx7; /* AUDIO_APBIF_RX4, offset 0x50 */ + u32 apbif_rx8; /* AUDIO_APBIF_RX4, offset 0x54 */ + u32 apbif_rx9; /* AUDIO_APBIF_RX4, offset 0x58 */ + + u32 amx0_rx0; /* AUDIO_AMX0_RX0, offset 0x5C */ + u32 amx0_rx1; /* AUDIO_AMX0_RX1, offset 0x60 */ + u32 amx0_rx2; /* AUDIO_AMX0_RX2, offset 0x64 */ + u32 amx0_rx3; /* AUDIO_AMX0_RX3, offset 0x68 */ + + u32 adx0_rx0; /* AUDIO_ADX0_RX0, offset 0x6C */ +}; + +struct apbif_regs { + u32 channel0_ctrl; /* APBIF_CHANNEL0_CTRL */ + u32 channel0_clr; /* APBIF_CHANNEL0_CLEAR */ + u32 channel0_stat; /* APBIF_CHANNEL0_STATUS */ + u32 channel0_txfifo; /* APBIF_CHANNEL0_TXFIFO */ + u32 channel0_rxfifo; /* APBIF_CHANNEL0_RXFIFO */ + u32 channel0_cif_tx0_ctrl; /* APBIF_AUDIOCIF_TX0_CTRL */ + u32 channel0_cif_rx0_ctrl; /* APBIF_AUDIOCIF_RX0_CTRL */ + u32 channel0_reserved0; /* RESERVED, offset 0x1C */ + /* ahub_channel1_ctrl/clr/stat/txfifo/rxfifl/ciftx/cifrx ... here */ + /* ahub_channel2_ctrl/clr/stat/txfifo/rxfifl/ciftx/cifrx ... here */ + /* ahub_channel3_ctrl/clr/stat/txfifo/rxfifl/ciftx/cifrx ... here */ + u32 reserved123[3 * 8]; + u32 config_link_ctrl; /* APBIF_CONFIG_LINK_CTRL_0, off 0x80 */ + u32 misc_ctrl; /* APBIF_MISC_CTRL_0, offset 0x84 */ + u32 apbdma_live_stat; /* APBIF_APBDMA_LIVE_STATUS_0 */ + u32 i2s_live_stat; /* APBIF_I2S_LIVE_STATUS_0 */ + u32 dam0_live_stat; /* APBIF_DAM0_LIVE_STATUS_0 */ + u32 dam1_live_stat; /* APBIF_DAM0_LIVE_STATUS_0 */ + u32 dam2_live_stat; /* APBIF_DAM0_LIVE_STATUS_0 */ + u32 spdif_live_stat; /* APBIF_SPDIF_LIVE_STATUS_0 */ + u32 i2s_int_mask; /* APBIF_I2S_INT_MASK_0, offset B0 */ + u32 dam_int_mask; /* APBIF_DAM_INT_MASK_0 */ + u32 reserved_int_mask; /* RESERVED, offset 0xB8 */ + u32 spdif_int_mask; /* APBIF_SPDIF_INT_MASK_0 */ + u32 apbif_int_mask; /* APBIF_APBIF_INT_MASK_0, off C0 */ + u32 reserved2_int_mask; /* RESERVED, offset 0xC4 */ + u32 i2s_int_stat; /* APBIF_I2S_INT_STATUS_0, offset C8 */ + u32 dam_int_stat; /* APBIF_DAM_INT_STATUS_0 */ + u32 reserved_int_stat; /* RESERVED, offset 0xD0 */ + u32 spdif_int_stat; /* APBIF_SPDIF_INT_STATUS_0 */ + u32 apbif_int_stat; /* APBIF_APBIF_INT_STATUS_0 */ + u32 reserved2_int_stat; /* RESERVED, offset 0xDC */ + u32 i2s_int_src; /* APBIF_I2S_INT_SOURCE_0, offset E0 */ + u32 dam_int_src; /* APBIF_DAM_INT_SOURCE_0 */ + u32 reserved_int_src; /* RESERVED, offset 0xE8 */ + u32 spdif_int_src; /* APBIF_SPDIF_INT_SOURCE_0 */ + u32 apbif_int_src; /* APBIF_APBIF_INT_SOURCE_0, off F0 */ + u32 reserved2_int_src; /* RESERVED, offset 0xF4 */ + u32 i2s_int_set; /* APBIF_I2S_INT_SET_0, offset 0xF8 */ + u32 dam_int_set; /* APBIF_DAM_INT_SET_0, offset 0xFC */ + u32 spdif_int_set; /* APBIF_SPDIF_INT_SET_0, off 0x100 */ + u32 apbif_int_set; /* APBIF_APBIF_INT_SET_0, off 0x104 */ +}; + +/* + * Tegra AHUB Registers Definition + */ +enum { + TEGRA_AUDIOCIF_CTRL_FIFO_THRESHOLD_SHIFT = 24, + TEGRA_AUDIOCIF_CTRL_FIFO_THRESHOLD_MASK_US = 0x3f, + TEGRA_AUDIOCIF_CTRL_FIFO_THRESHOLD_MASK = + TEGRA_AUDIOCIF_CTRL_FIFO_THRESHOLD_MASK_US << + TEGRA_AUDIOCIF_CTRL_FIFO_THRESHOLD_SHIFT, + + /* Channel count minus 1 */ + TEGRA_AUDIOCIF_CTRL_AUDIO_CHANNELS_SHIFT = 20, + TEGRA_AUDIOCIF_CTRL_AUDIO_CHANNELS_MASK_US = 0xf, + TEGRA_AUDIOCIF_CTRL_AUDIO_CHANNELS_MASK = + TEGRA_AUDIOCIF_CTRL_AUDIO_CHANNELS_MASK_US << + TEGRA_AUDIOCIF_CTRL_AUDIO_CHANNELS_SHIFT, + + /* Channel count minus 1 */ + TEGRA_AUDIOCIF_CTRL_CLIENT_CHANNELS_SHIFT = 16, + TEGRA_AUDIOCIF_CTRL_CLIENT_CHANNELS_MASK_US = 0xf, + TEGRA_AUDIOCIF_CTRL_CLIENT_CHANNELS_MASK = + TEGRA_AUDIOCIF_CTRL_CLIENT_CHANNELS_MASK_US << + TEGRA_AUDIOCIF_CTRL_CLIENT_CHANNELS_SHIFT, + + TEGRA_AUDIOCIF_BITS_4 = 0, + TEGRA_AUDIOCIF_BITS_8 = 1, + TEGRA_AUDIOCIF_BITS_12 = 2, + TEGRA_AUDIOCIF_BITS_16 = 3, + TEGRA_AUDIOCIF_BITS_20 = 4, + TEGRA_AUDIOCIF_BITS_24 = 5, + TEGRA_AUDIOCIF_BITS_28 = 6, + TEGRA_AUDIOCIF_BITS_32 = 7, + + TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT = 12, + TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_MASK = + 7 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_4 = + TEGRA_AUDIOCIF_BITS_4 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_8 = + TEGRA_AUDIOCIF_BITS_8 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_12 = + TEGRA_AUDIOCIF_BITS_12 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_16 = + TEGRA_AUDIOCIF_BITS_16 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_20 = + TEGRA_AUDIOCIF_BITS_20 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_24 = + TEGRA_AUDIOCIF_BITS_24 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_28 = + TEGRA_AUDIOCIF_BITS_28 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_32 = + TEGRA_AUDIOCIF_BITS_32 << TEGRA_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT, + + TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT = 8, + TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_MASK = + 7 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_4 = + TEGRA_AUDIOCIF_BITS_4 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_8 = + TEGRA_AUDIOCIF_BITS_8 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_12 = + TEGRA_AUDIOCIF_BITS_12 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_16 = + TEGRA_AUDIOCIF_BITS_16 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_20 = + TEGRA_AUDIOCIF_BITS_20 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_24 = + TEGRA_AUDIOCIF_BITS_24 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_28 = + TEGRA_AUDIOCIF_BITS_28 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT, + TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_32 = + TEGRA_AUDIOCIF_BITS_32 << TEGRA_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT, + + TEGRA_AUDIOCIF_EXPAND_ZERO = 0, + TEGRA_AUDIOCIF_EXPAND_ONE = 1, + TEGRA_AUDIOCIF_EXPAND_LFSR = 2, + + TEGRA_AUDIOCIF_CTRL_EXPAND_SHIFT = 6, + TEGRA_AUDIOCIF_CTRL_EXPAND_MASK = 3 << TEGRA_AUDIOCIF_CTRL_EXPAND_SHIFT, + TEGRA_AUDIOCIF_CTRL_EXPAND_ZERO = + TEGRA_AUDIOCIF_EXPAND_ZERO << TEGRA_AUDIOCIF_CTRL_EXPAND_SHIFT, + TEGRA_AUDIOCIF_CTRL_EXPAND_ONE = + TEGRA_AUDIOCIF_EXPAND_ONE << TEGRA_AUDIOCIF_CTRL_EXPAND_SHIFT, + TEGRA_AUDIOCIF_CTRL_EXPAND_LFSR = + TEGRA_AUDIOCIF_EXPAND_LFSR << TEGRA_AUDIOCIF_CTRL_EXPAND_SHIFT, + + TEGRA_AUDIOCIF_STEREO_CONV_CH0 = 0, + TEGRA_AUDIOCIF_STEREO_CONV_CH1 = 1, + TEGRA_AUDIOCIF_STEREO_CONV_AVG = 2, + + TEGRA_AUDIOCIF_CTRL_STEREO_CONV_SHIFT = 4, + TEGRA_AUDIOCIF_CTRL_STEREO_CONV_MASK = + 3 << TEGRA_AUDIOCIF_CTRL_STEREO_CONV_SHIFT, + TEGRA_AUDIOCIF_CTRL_STEREO_CONV_CH0 = + TEGRA_AUDIOCIF_STEREO_CONV_CH0 << + TEGRA_AUDIOCIF_CTRL_STEREO_CONV_SHIFT, + TEGRA_AUDIOCIF_CTRL_STEREO_CONV_CH1 = + TEGRA_AUDIOCIF_STEREO_CONV_CH1 << + TEGRA_AUDIOCIF_CTRL_STEREO_CONV_SHIFT, + TEGRA_AUDIOCIF_CTRL_STEREO_CONV_AVG = + TEGRA_AUDIOCIF_STEREO_CONV_AVG << + TEGRA_AUDIOCIF_CTRL_STEREO_CONV_SHIFT, + + TEGRA_AUDIOCIF_CTRL_REPLICATE = 3, + + TEGRA_AUDIOCIF_DIRECTION_TX = 0, + TEGRA_AUDIOCIF_DIRECTION_RX = 1, + + TEGRA_AUDIOCIF_CTRL_DIRECTION_SHIFT = 2, + TEGRA_AUDIOCIF_CTRL_DIRECTION_MASK = + 1 << TEGRA_AUDIOCIF_CTRL_DIRECTION_SHIFT, + TEGRA_AUDIOCIF_CTRL_DIRECTION_TX = + TEGRA_AUDIOCIF_DIRECTION_TX << + TEGRA_AUDIOCIF_CTRL_DIRECTION_SHIFT, + TEGRA_AUDIOCIF_CTRL_DIRECTION_RX = + TEGRA_AUDIOCIF_DIRECTION_RX << + TEGRA_AUDIOCIF_CTRL_DIRECTION_SHIFT, + + TEGRA_AUDIOCIF_TRUNCATE_ROUND = 0, + TEGRA_AUDIOCIF_TRUNCATE_CHOP = 1, + + TEGRA_AUDIOCIF_CTRL_TRUNCATE_SHIFT = 1, + TEGRA_AUDIOCIF_CTRL_TRUNCATE_MASK = + 1 << TEGRA_AUDIOCIF_CTRL_TRUNCATE_SHIFT, + TEGRA_AUDIOCIF_CTRL_TRUNCATE_ROUND = + TEGRA_AUDIOCIF_TRUNCATE_ROUND << + TEGRA_AUDIOCIF_CTRL_TRUNCATE_SHIFT, + TEGRA_AUDIOCIF_CTRL_TRUNCATE_CHOP = + TEGRA_AUDIOCIF_TRUNCATE_CHOP << + TEGRA_AUDIOCIF_CTRL_TRUNCATE_SHIFT, + + TEGRA_AUDIOCIF_MONO_CONV_ZERO = 0, + TEGRA_AUDIOCIF_MONO_CONV_COPY = 1, + + TEGRA_AUDIOCIF_CTRL_MONO_CONV_SHIFT = 0, + TEGRA_AUDIOCIF_CTRL_MONO_CONV_MASK = + 1 << TEGRA_AUDIOCIF_CTRL_MONO_CONV_SHIFT, + TEGRA_AUDIOCIF_CTRL_MONO_CONV_ZERO = + TEGRA_AUDIOCIF_MONO_CONV_ZERO << + TEGRA_AUDIOCIF_CTRL_MONO_CONV_SHIFT, + TEGRA_AUDIOCIF_CTRL_MONO_CONV_COPY = + TEGRA_AUDIOCIF_MONO_CONV_COPY << + TEGRA_AUDIOCIF_CTRL_MONO_CONV_SHIFT, + + /* Registers within TEGRA_AUDIO_CLUSTER_BASE */ + + TEGRA_AHUB_CHANNEL_CTRL = 0x0, + TEGRA_AHUB_CHANNEL_CTRL_STRIDE = 0x20, + TEGRA_AHUB_CHANNEL_CTRL_COUNT = 4, + TEGRA_AHUB_CHANNEL_CTRL_TX_EN = 1 << 31, + TEGRA_AHUB_CHANNEL_CTRL_RX_EN = 1 << 30, + TEGRA_AHUB_CHANNEL_CTRL_LOOPBACK = 1 << 29, + + TEGRA_AHUB_CHANNEL_CTRL_TX_THRESHOLD_SHIFT = 16, + TEGRA_AHUB_CHANNEL_CTRL_TX_THRESHOLD_MASK_US = 0xff, + TEGRA_AHUB_CHANNEL_CTRL_TX_THRESHOLD_MASK = + TEGRA_AHUB_CHANNEL_CTRL_TX_THRESHOLD_MASK_US << + TEGRA_AHUB_CHANNEL_CTRL_TX_THRESHOLD_SHIFT, + + TEGRA_AHUB_CHANNEL_CTRL_RX_THRESHOLD_SHIFT = 8, + TEGRA_AHUB_CHANNEL_CTRL_RX_THRESHOLD_MASK_US = 0xff, + TEGRA_AHUB_CHANNEL_CTRL_RX_THRESHOLD_MASK = + TEGRA_AHUB_CHANNEL_CTRL_RX_THRESHOLD_MASK_US << + TEGRA_AHUB_CHANNEL_CTRL_RX_THRESHOLD_SHIFT, + + TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_EN = 1 << 6, + + TEGRA_PACK_8_4 = 2, + TEGRA_PACK_16 = 3, + + TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_SHIFT = 4, + TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_MASK_US = 3, + TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_MASK = + TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_MASK_US << + TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_SHIFT, + TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_8_4 = + TEGRA_PACK_8_4 << TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_SHIFT, + TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_16 = + TEGRA_PACK_16 << TEGRA_AHUB_CHANNEL_CTRL_TX_PACK_SHIFT, + + TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_EN = 1 << 2, + + TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_SHIFT = 0, + TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_MASK_US = 3, + TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_MASK = + TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_MASK_US << + TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_SHIFT, + TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_8_4 = + TEGRA_PACK_8_4 << TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_SHIFT, + TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_16 = + TEGRA_PACK_16 << TEGRA_AHUB_CHANNEL_CTRL_RX_PACK_SHIFT, + + /* TEGRA_AHUB_CHANNEL_CLEAR */ + + TEGRA_AHUB_CHANNEL_CLEAR = 0x4, + TEGRA_AHUB_CHANNEL_CLEAR_STRIDE = 0x20, + TEGRA_AHUB_CHANNEL_CLEAR_COUNT = 4, + TEGRA_AHUB_CHANNEL_CLEAR_TX_SOFT_RESET = 1 << 31, + TEGRA_AHUB_CHANNEL_CLEAR_RX_SOFT_RESET = 1 << 30, + + 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_ */ diff --git a/drivers/sound/Kconfig b/drivers/sound/Kconfig index 6e9dcefcb90..4ebc719be2b 100644 --- a/drivers/sound/Kconfig +++ b/drivers/sound/Kconfig @@ -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 diff --git a/drivers/sound/Makefile b/drivers/sound/Makefile index e155041ff5f..077012f8a61 100644 --- a/drivers/sound/Makefile +++ b/drivers/sound/Makefile @@ -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 diff --git a/drivers/sound/tegra_ahub.c b/drivers/sound/tegra_ahub.c new file mode 100644 index 00000000000..c71fce9bb1c --- /dev/null +++ b/drivers/sound/tegra_ahub.c @@ -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, &regs->i2s0_rx0); + break; + case 1: + writel(1, &regs->i2s1_rx0); + break; + case 2: + writel(1, &regs->i2s2_rx0); + break; + case 3: + writel(1, &regs->i2s3_rx0); + break; + case 4: + writel(1, &regs->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), +};