ASoC: Tegra: Implement SPDIF CPU DAI

This is a minimal driver for the Tegra SPDIF controller.

In hardware, the SPDIF output signal is always routed to any active HDMI
display controllers, and may also be routed to external pins on Tegra
using the pinmux.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 473 insertions, 0 deletions

diff --git a/sound/soc/tegra/tegra_spdif.h b/sound/soc/tegra/tegra_spdif.h
new file mode 100644
index 000000000000..2e03db430279
--- /dev/null
+++ b/sound/soc/tegra/tegra_spdif.h
@@ -0,0 +1,473 @@
+/*
+ * tegra_spdif.h - Definitions for Tegra SPDIF driver
+ *
+ * Author: Stephen Warren <swarren@nvidia.com>
+ * Copyright (C) 2011 - NVIDIA, Inc.
+ *
+ * Based on code copyright/by:
+ * Copyright (c) 2008-2009, NVIDIA Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#ifndef __TEGRA_SPDIF_H__
+#define __TEGRA_SPDIF_H__
+
+#include "tegra_pcm.h"
+
+/* Offsets from TEGRA_SPDIF_BASE */
+
+#define TEGRA_SPDIF_CTRL                                        0x0
+#define TEGRA_SPDIF_STATUS                                      0x4
+#define TEGRA_SPDIF_STROBE_CTRL                                 0x8
+#define TEGRA_SPDIF_DATA_FIFO_CSR                               0x0C
+#define TEGRA_SPDIF_DATA_OUT                                    0x40
+#define TEGRA_SPDIF_DATA_IN                                     0x80
+#define TEGRA_SPDIF_CH_STA_RX_A                                 0x100
+#define TEGRA_SPDIF_CH_STA_RX_B                                 0x104
+#define TEGRA_SPDIF_CH_STA_RX_C                                 0x108
+#define TEGRA_SPDIF_CH_STA_RX_D                                 0x10C
+#define TEGRA_SPDIF_CH_STA_RX_E                                 0x110
+#define TEGRA_SPDIF_CH_STA_RX_F                                 0x114
+#define TEGRA_SPDIF_CH_STA_TX_A                                 0x140
+#define TEGRA_SPDIF_CH_STA_TX_B                                 0x144
+#define TEGRA_SPDIF_CH_STA_TX_C                                 0x148
+#define TEGRA_SPDIF_CH_STA_TX_D                                 0x14C
+#define TEGRA_SPDIF_CH_STA_TX_E                                 0x150
+#define TEGRA_SPDIF_CH_STA_TX_F                                 0x154
+#define TEGRA_SPDIF_USR_STA_RX_A                                0x180
+#define TEGRA_SPDIF_USR_DAT_TX_A                                0x1C0
+
+/* Fields in TEGRA_SPDIF_CTRL */
+
+/* Start capturing from 0=right, 1=left channel */
+#define TEGRA_SPDIF_CTRL_CAP_LC                                 (1 << 30)
+
+/* SPDIF receiver(RX) enable */
+#define TEGRA_SPDIF_CTRL_RX_EN                                  (1 << 29)
+
+/* SPDIF Transmitter(TX) enable */
+#define TEGRA_SPDIF_CTRL_TX_EN                                  (1 << 28)
+
+/* Transmit Channel status */
+#define TEGRA_SPDIF_CTRL_TC_EN                                  (1 << 27)
+
+/* Transmit user Data */
+#define TEGRA_SPDIF_CTRL_TU_EN                                  (1 << 26)
+
+/* Interrupt on transmit error */
+#define TEGRA_SPDIF_CTRL_IE_TXE                                 (1 << 25)
+
+/* Interrupt on receive error */
+#define TEGRA_SPDIF_CTRL_IE_RXE                                 (1 << 24)
+
+/* Interrupt on invalid preamble */
+#define TEGRA_SPDIF_CTRL_IE_P                                   (1 << 23)
+
+/* Interrupt on "B" preamble */
+#define TEGRA_SPDIF_CTRL_IE_B                                   (1 << 22)
+
+/* Interrupt when block of channel status received */
+#define TEGRA_SPDIF_CTRL_IE_C                                   (1 << 21)
+
+/* Interrupt when a valid information unit (IU) is received */
+#define TEGRA_SPDIF_CTRL_IE_U                                   (1 << 20)
+
+/* Interrupt when RX user FIFO attention level is reached */
+#define TEGRA_SPDIF_CTRL_QE_RU                                  (1 << 19)
+
+/* Interrupt when TX user FIFO attention level is reached */
+#define TEGRA_SPDIF_CTRL_QE_TU                                  (1 << 18)
+
+/* Interrupt when RX data FIFO attention level is reached */
+#define TEGRA_SPDIF_CTRL_QE_RX                                  (1 << 17)
+
+/* Interrupt when TX data FIFO attention level is reached */
+#define TEGRA_SPDIF_CTRL_QE_TX                                  (1 << 16)
+
+/* Loopback test mode enable */
+#define TEGRA_SPDIF_CTRL_LBK_EN                                 (1 << 15)
+
+/*
+ * Pack data mode:
+ * 0 = Single data (16 bit needs to be  padded to match the
+ *     interface data bit size).
+ * 1 = Packeted left/right channel data into a single word.
+ */
+#define TEGRA_SPDIF_CTRL_PACK                                   (1 << 14)
+
+/*
+ * 00 = 16bit data
+ * 01 = 20bit data
+ * 10 = 24bit data
+ * 11 = raw data
+ */
+#define TEGRA_SPDIF_BIT_MODE_16BIT                              0
+#define TEGRA_SPDIF_BIT_MODE_20BIT                              1
+#define TEGRA_SPDIF_BIT_MODE_24BIT                              2
+#define TEGRA_SPDIF_BIT_MODE_RAW                                3
+
+#define TEGRA_SPDIF_CTRL_BIT_MODE_SHIFT                         12
+#define TEGRA_SPDIF_CTRL_BIT_MODE_MASK                          (3                          << TEGRA_SPDIF_CTRL_BIT_MODE_SHIFT)
+#define TEGRA_SPDIF_CTRL_BIT_MODE_16BIT                         (TEGRA_SPDIF_BIT_MODE_16BIT << TEGRA_SPDIF_CTRL_BIT_MODE_SHIFT)
+#define TEGRA_SPDIF_CTRL_BIT_MODE_20BIT                         (TEGRA_SPDIF_BIT_MODE_20BIT << TEGRA_SPDIF_CTRL_BIT_MODE_SHIFT)
+#define TEGRA_SPDIF_CTRL_BIT_MODE_24BIT                         (TEGRA_SPDIF_BIT_MODE_24BIT << TEGRA_SPDIF_CTRL_BIT_MODE_SHIFT)
+#define TEGRA_SPDIF_CTRL_BIT_MODE_RAW                           (TEGRA_SPDIF_BIT_MODE_RAW   << TEGRA_SPDIF_CTRL_BIT_MODE_SHIFT)
+
+/* Fields in TEGRA_SPDIF_STATUS */
+
+/*
+ * Note: IS_P, IS_B, IS_C, and IS_U are sticky bits. Software must
+ * write a 1 to the corresponding bit location to clear the status.
+ */
+
+/*
+ * Receiver(RX) shifter is busy receiving data.
+ * This bit is asserted when the receiver first locked onto the
+ * preamble of the data stream after RX_EN is asserted. This bit is
+ * deasserted when either,
+ * (a) the end of a frame is reached after RX_EN is deeasserted, or
+ * (b) the SPDIF data stream becomes inactive.
+ */
+#define TEGRA_SPDIF_STATUS_RX_BSY                               (1 << 29)
+
+/*
+ * Transmitter(TX) shifter is busy transmitting data.
+ * This bit is asserted when TX_EN is asserted.
+ * This bit is deasserted when the end of a frame is reached after
+ * TX_EN is deasserted.
+ */
+#define TEGRA_SPDIF_STATUS_TX_BSY                               (1 << 28)
+
+/*
+ * TX is busy shifting out channel status.
+ * This bit is asserted when both TX_EN and TC_EN are asserted and
+ * data from CH_STA_TX_A register is loaded into the internal shifter.
+ * This bit is deasserted when either,
+ * (a) the end of a frame is reached after TX_EN is deasserted, or
+ * (b) CH_STA_TX_F register is loaded into the internal shifter.
+ */
+#define TEGRA_SPDIF_STATUS_TC_BSY                               (1 << 27)
+
+/*
+ * TX User data FIFO busy.
+ * This bit is asserted when TX_EN and TXU_EN are asserted and
+ * there's data in the TX user FIFO.  This bit is deassert when either,
+ * (a) the end of a frame is reached after TX_EN is deasserted, or
+ * (b) there's no data left in the TX user FIFO.
+ */
+#define TEGRA_SPDIF_STATUS_TU_BSY                               (1 << 26)
+
+/* TX FIFO Underrun error status */
+#define TEGRA_SPDIF_STATUS_TX_ERR                               (1 << 25)
+
+/* RX FIFO Overrun error status */
+#define TEGRA_SPDIF_STATUS_RX_ERR                               (1 << 24)
+
+/* Preamble status: 0=Preamble OK, 1=bad/missing preamble */
+#define TEGRA_SPDIF_STATUS_IS_P                                 (1 << 23)
+
+/* B-preamble detection status: 0=not detected, 1=B-preamble detected */
+#define TEGRA_SPDIF_STATUS_IS_B                                 (1 << 22)
+
+/*
+ * RX channel block data receive status:
+ * 0=entire block not recieved yet.
+ * 1=received entire block of channel status,
+ */
+#define TEGRA_SPDIF_STATUS_IS_C                                 (1 << 21)
+
+/* RX User Data Valid flag:  1=valid IU detected, 0 = no IU detected. */
+#define TEGRA_SPDIF_STATUS_IS_U                                 (1 << 20)
+
+/*
+ * RX User FIFO Status:
+ * 1=attention level reached, 0=attention level not reached.
+ */
+#define TEGRA_SPDIF_STATUS_QS_RU                                (1 << 19)
+
+/*
+ * TX User FIFO Status:
+ * 1=attention level reached, 0=attention level not reached.
+ */
+#define TEGRA_SPDIF_STATUS_QS_TU                                (1 << 18)
+
+/*
+ * RX Data FIFO Status:
+ * 1=attention level reached, 0=attention level not reached.
+ */
+#define TEGRA_SPDIF_STATUS_QS_RX                                (1 << 17)
+
+/*
+ * TX Data FIFO Status:
+ * 1=attention level reached, 0=attention level not reached.
+ */
+#define TEGRA_SPDIF_STATUS_QS_TX                                (1 << 16)
+
+/* Fields in TEGRA_SPDIF_STROBE_CTRL */
+
+/*
+ * Indicates the approximate number of detected SPDIFIN clocks within a
+ * bi-phase period.
+ */
+#define TEGRA_SPDIF_STROBE_CTRL_PERIOD_SHIFT                    16
+#define TEGRA_SPDIF_STROBE_CTRL_PERIOD_MASK                     (0xff << TEGRA_SPDIF_STROBE_CTRL_PERIOD_SHIFT)
+
+/* Data strobe mode: 0=Auto-locked 1=Manual locked */
+#define TEGRA_SPDIF_STROBE_CTRL_STROBE                          (1 << 15)
+
+/*
+ * Manual data strobe time within the bi-phase clock period (in terms of
+ * the number of over-sampling clocks).
+ */
+#define TEGRA_SPDIF_STROBE_CTRL_DATA_STROBES_SHIFT              8
+#define TEGRA_SPDIF_STROBE_CTRL_DATA_STROBES_MASK               (0x1f << TEGRA_SPDIF_STROBE_CTRL_DATA_STROBES_SHIFT)
+
+/*
+ * Manual SPDIFIN bi-phase clock period (in terms of the number of
+ * over-sampling clocks).
+ */
+#define TEGRA_SPDIF_STROBE_CTRL_CLOCK_PERIOD_SHIFT              0
+#define TEGRA_SPDIF_STROBE_CTRL_CLOCK_PERIOD_MASK               (0x3f << TEGRA_SPDIF_STROBE_CTRL_CLOCK_PERIOD_SHIFT)
+
+/* Fields in SPDIF_DATA_FIFO_CSR */
+
+/* Clear Receiver User FIFO (RX USR.FIFO) */
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RU_CLR                        (1 << 31)
+
+#define TEGRA_SPDIF_FIFO_ATN_LVL_U_ONE_SLOT                     0
+#define TEGRA_SPDIF_FIFO_ATN_LVL_U_TWO_SLOTS                    1
+#define TEGRA_SPDIF_FIFO_ATN_LVL_U_THREE_SLOTS                  2
+#define TEGRA_SPDIF_FIFO_ATN_LVL_U_FOUR_SLOTS                   3
+
+/* RU FIFO attention level */
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RU_ATN_LVL_SHIFT              29
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RU_ATN_LVL_MASK               \
+                (0x3                                    << TEGRA_SPDIF_DATA_FIFO_CSR_RU_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RU_ATN_LVL_RU1_WORD_FULL      \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_U_ONE_SLOT    << TEGRA_SPDIF_DATA_FIFO_CSR_RU_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RU_ATN_LVL_RU2_WORD_FULL      \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_U_TWO_SLOTS   << TEGRA_SPDIF_DATA_FIFO_CSR_RU_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RU_ATN_LVL_RU3_WORD_FULL      \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_U_THREE_SLOTS << TEGRA_SPDIF_DATA_FIFO_CSR_RU_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RU_ATN_LVL_RU4_WORD_FULL      \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_U_FOUR_SLOTS  << TEGRA_SPDIF_DATA_FIFO_CSR_RU_ATN_LVL_SHIFT)
+
+/* Number of RX USR.FIFO levels with valid data. */
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RU_FULL_COUNT_SHIFT           24
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RU_FULL_COUNT_MASK            (0x1f << TEGRA_SPDIF_DATA_FIFO_CSR_RU_FULL_COUNT_SHIFT)
+
+/* Clear Transmitter User FIFO (TX USR.FIFO) */
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TU_CLR                        (1 << 23)
+
+/* TU FIFO attention level */
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TU_ATN_LVL_SHIFT              21
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TU_ATN_LVL_MASK               \
+                (0x3                                   << TEGRA_SPDIF_DATA_FIFO_CSR_TU_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TU_ATN_LVL_TU1_WORD_FULL      \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_U_ONE_SLOT    << TEGRA_SPDIF_DATA_FIFO_CSR_TU_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TU_ATN_LVL_TU2_WORD_FULL      \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_U_TWO_SLOTS   << TEGRA_SPDIF_DATA_FIFO_CSR_TU_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TU_ATN_LVL_TU3_WORD_FULL      \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_U_THREE_SLOTS << TEGRA_SPDIF_DATA_FIFO_CSR_TU_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TU_ATN_LVL_TU4_WORD_FULL      \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_U_FOUR_SLOTS  << TEGRA_SPDIF_DATA_FIFO_CSR_TU_ATN_LVL_SHIFT)
+
+/* Number of TX USR.FIFO levels that could be filled. */
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TU_EMPTY_COUNT_SHIFT          16
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TU_EMPTY_COUNT_MASK           (0x1f << SPDIF_DATA_FIFO_CSR_TU_EMPTY_COUNT_SHIFT)
+
+/* Clear Receiver Data FIFO (RX DATA.FIFO) */
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RX_CLR                        (1 << 15)
+
+#define TEGRA_SPDIF_FIFO_ATN_LVL_D_ONE_SLOT                     0
+#define TEGRA_SPDIF_FIFO_ATN_LVL_D_FOUR_SLOTS                   1
+#define TEGRA_SPDIF_FIFO_ATN_LVL_D_EIGHT_SLOTS                  2
+#define TEGRA_SPDIF_FIFO_ATN_LVL_D_TWELVE_SLOTS                 3
+
+/* RU FIFO attention level */
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RX_ATN_LVL_SHIFT              13
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RX_ATN_LVL_MASK               \
+                (0x3                                     << TEGRA_SPDIF_DATA_FIFO_CSR_RX_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RX_ATN_LVL_RU1_WORD_FULL      \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_D_ONE_SLOT     << TEGRA_SPDIF_DATA_FIFO_CSR_RX_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RX_ATN_LVL_RU4_WORD_FULL      \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_D_FOUR_SLOTS   << TEGRA_SPDIF_DATA_FIFO_CSR_RX_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RX_ATN_LVL_RU8_WORD_FULL      \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_D_EIGHT_SLOTS  << TEGRA_SPDIF_DATA_FIFO_CSR_RX_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RX_ATN_LVL_RU12_WORD_FULL     \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_D_TWELVE_SLOTS << TEGRA_SPDIF_DATA_FIFO_CSR_RX_ATN_LVL_SHIFT)
+
+/* Number of RX DATA.FIFO levels with valid data. */
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RX_FULL_COUNT_SHIFT           8
+#define TEGRA_SPDIF_DATA_FIFO_CSR_RX_FULL_COUNT_MASK            (0x1f << TEGRA_SPDIF_DATA_FIFO_CSR_RX_FULL_COUNT_SHIFT)
+
+/* Clear Transmitter Data FIFO (TX DATA.FIFO) */
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TX_CLR                        (1 << 7)
+
+/* TU FIFO attention level */
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_SHIFT              5
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_MASK               \
+                (0x3                                     << TEGRA_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_TU1_WORD_FULL      \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_D_ONE_SLOT     << TEGRA_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_TU4_WORD_FULL      \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_D_FOUR_SLOTS   << TEGRA_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_TU8_WORD_FULL      \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_D_EIGHT_SLOTS  << TEGRA_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_SHIFT)
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_TU12_WORD_FULL     \
+                (TEGRA_SPDIF_FIFO_ATN_LVL_D_TWELVE_SLOTS << TEGRA_SPDIF_DATA_FIFO_CSR_TX_ATN_LVL_SHIFT)
+
+/* Number of TX DATA.FIFO levels that could be filled. */
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TX_EMPTY_COUNT_SHIFT          0
+#define TEGRA_SPDIF_DATA_FIFO_CSR_TX_EMPTY_COUNT_MASK           (0x1f << SPDIF_DATA_FIFO_CSR_TX_EMPTY_COUNT_SHIFT)
+
+/* Fields in TEGRA_SPDIF_DATA_OUT */
+
+/*
+ * This register has 5 different formats:
+ * 16-bit        (BIT_MODE=00, PACK=0)
+ * 20-bit        (BIT_MODE=01, PACK=0)
+ * 24-bit        (BIT_MODE=10, PACK=0)
+ * raw           (BIT_MODE=11, PACK=0)
+ * 16-bit packed (BIT_MODE=00, PACK=1)
+ */
+
+#define TEGRA_SPDIF_DATA_OUT_DATA_16_SHIFT                      0
+#define TEGRA_SPDIF_DATA_OUT_DATA_16_MASK                       (0xffff << TEGRA_SPDIF_DATA_OUT_DATA_16_SHIFT)
+
+#define TEGRA_SPDIF_DATA_OUT_DATA_20_SHIFT                      0
+#define TEGRA_SPDIF_DATA_OUT_DATA_20_MASK                       (0xfffff << TEGRA_SPDIF_DATA_OUT_DATA_20_SHIFT)
+
+#define TEGRA_SPDIF_DATA_OUT_DATA_24_SHIFT                      0
+#define TEGRA_SPDIF_DATA_OUT_DATA_24_MASK                       (0xffffff << TEGRA_SPDIF_DATA_OUT_DATA_24_SHIFT)
+
+#define TEGRA_SPDIF_DATA_OUT_DATA_RAW_P                         (1 << 31)
+#define TEGRA_SPDIF_DATA_OUT_DATA_RAW_C                         (1 << 30)
+#define TEGRA_SPDIF_DATA_OUT_DATA_RAW_U                         (1 << 29)
+#define TEGRA_SPDIF_DATA_OUT_DATA_RAW_V                         (1 << 28)
+
+#define TEGRA_SPDIF_DATA_OUT_DATA_RAW_DATA_SHIFT                8
+#define TEGRA_SPDIF_DATA_OUT_DATA_RAW_DATA_MASK                 (0xfffff << TEGRA_SPDIF_DATA_OUT_DATA_RAW_DATA_SHIFT)
+
+#define TEGRA_SPDIF_DATA_OUT_DATA_RAW_AUX_SHIFT                 4
+#define TEGRA_SPDIF_DATA_OUT_DATA_RAW_AUX_MASK                  (0xf << TEGRA_SPDIF_DATA_OUT_DATA_RAW_AUX_SHIFT)
+
+#define TEGRA_SPDIF_DATA_OUT_DATA_RAW_PREAMBLE_SHIFT            0
+#define TEGRA_SPDIF_DATA_OUT_DATA_RAW_PREAMBLE_MASK             (0xf << TEGRA_SPDIF_DATA_OUT_DATA_RAW_PREAMBLE_SHIFT)
+
+#define TEGRA_SPDIF_DATA_OUT_DATA_16_PACKED_RIGHT_SHIFT         16
+#define TEGRA_SPDIF_DATA_OUT_DATA_16_PACKED_RIGHT_MASK          (0xffff << TEGRA_SPDIF_DATA_OUT_DATA_16_PACKED_RIGHT_SHIFT)
+
+#define TEGRA_SPDIF_DATA_OUT_DATA_16_PACKED_LEFT_SHIFT          0
+#define TEGRA_SPDIF_DATA_OUT_DATA_16_PACKED_LEFT_MASK           (0xffff << TEGRA_SPDIF_DATA_OUT_DATA_16_PACKED_LEFT_SHIFT)
+
+/* Fields in TEGRA_SPDIF_DATA_IN */
+
+/*
+ * This register has 5 different formats:
+ * 16-bit        (BIT_MODE=00, PACK=0)
+ * 20-bit        (BIT_MODE=01, PACK=0)
+ * 24-bit        (BIT_MODE=10, PACK=0)
+ * raw           (BIT_MODE=11, PACK=0)
+ * 16-bit packed (BIT_MODE=00, PACK=1)
+ *
+ * Bits 31:24 are common to all modes except 16-bit packed
+ */
+
+#define TEGRA_SPDIF_DATA_IN_DATA_P                              (1 << 31)
+#define TEGRA_SPDIF_DATA_IN_DATA_C                              (1 << 30)
+#define TEGRA_SPDIF_DATA_IN_DATA_U                              (1 << 29)
+#define TEGRA_SPDIF_DATA_IN_DATA_V                              (1 << 28)
+
+#define TEGRA_SPDIF_DATA_IN_DATA_PREAMBLE_SHIFT                 24
+#define TEGRA_SPDIF_DATA_IN_DATA_PREAMBLE_MASK                  (0xf << TEGRA_SPDIF_DATA_IN_DATA_PREAMBLE_SHIFT)
+
+#define TEGRA_SPDIF_DATA_IN_DATA_16_SHIFT                       0
+#define TEGRA_SPDIF_DATA_IN_DATA_16_MASK                        (0xffff << TEGRA_SPDIF_DATA_IN_DATA_16_SHIFT)
+
+#define TEGRA_SPDIF_DATA_IN_DATA_20_SHIFT                       0
+#define TEGRA_SPDIF_DATA_IN_DATA_20_MASK                        (0xfffff << TEGRA_SPDIF_DATA_IN_DATA_20_SHIFT)
+
+#define TEGRA_SPDIF_DATA_IN_DATA_24_SHIFT                       0
+#define TEGRA_SPDIF_DATA_IN_DATA_24_MASK                        (0xffffff << TEGRA_SPDIF_DATA_IN_DATA_24_SHIFT)
+
+#define TEGRA_SPDIF_DATA_IN_DATA_RAW_DATA_SHIFT                 8
+#define TEGRA_SPDIF_DATA_IN_DATA_RAW_DATA_MASK                  (0xfffff << TEGRA_SPDIF_DATA_IN_DATA_RAW_DATA_SHIFT)
+
+#define TEGRA_SPDIF_DATA_IN_DATA_RAW_AUX_SHIFT                  4
+#define TEGRA_SPDIF_DATA_IN_DATA_RAW_AUX_MASK                   (0xf << TEGRA_SPDIF_DATA_IN_DATA_RAW_AUX_SHIFT)
+
+#define TEGRA_SPDIF_DATA_IN_DATA_RAW_PREAMBLE_SHIFT             0
+#define TEGRA_SPDIF_DATA_IN_DATA_RAW_PREAMBLE_MASK              (0xf << TEGRA_SPDIF_DATA_IN_DATA_RAW_PREAMBLE_SHIFT)
+
+#define TEGRA_SPDIF_DATA_IN_DATA_16_PACKED_RIGHT_SHIFT          16
+#define TEGRA_SPDIF_DATA_IN_DATA_16_PACKED_RIGHT_MASK           (0xffff << TEGRA_SPDIF_DATA_IN_DATA_16_PACKED_RIGHT_SHIFT)
+
+#define TEGRA_SPDIF_DATA_IN_DATA_16_PACKED_LEFT_SHIFT           0
+#define TEGRA_SPDIF_DATA_IN_DATA_16_PACKED_LEFT_MASK            (0xffff << TEGRA_SPDIF_DATA_IN_DATA_16_PACKED_LEFT_SHIFT)
+
+/* Fields in TEGRA_SPDIF_CH_STA_RX_A */
+/* Fields in TEGRA_SPDIF_CH_STA_RX_B */
+/* Fields in TEGRA_SPDIF_CH_STA_RX_C */
+/* Fields in TEGRA_SPDIF_CH_STA_RX_D */
+/* Fields in TEGRA_SPDIF_CH_STA_RX_E */
+/* Fields in TEGRA_SPDIF_CH_STA_RX_F */
+
+/*
+ * The 6-word receive channel data page buffer holds a block (192 frames) of
+ * channel status information. The order of receive is from LSB to MSB
+ * bit, and from CH_STA_RX_A to CH_STA_RX_F then back to CH_STA_RX_A.
+ */
+
+/* Fields in TEGRA_SPDIF_CH_STA_TX_A */
+/* Fields in TEGRA_SPDIF_CH_STA_TX_B */
+/* Fields in TEGRA_SPDIF_CH_STA_TX_C */
+/* Fields in TEGRA_SPDIF_CH_STA_TX_D */
+/* Fields in TEGRA_SPDIF_CH_STA_TX_E */
+/* Fields in TEGRA_SPDIF_CH_STA_TX_F */
+
+/*
+ * The 6-word transmit channel data page buffer holds a block (192 frames) of
+ * channel status information. The order of transmission is from LSB to MSB
+ * bit, and from CH_STA_TX_A to CH_STA_TX_F then back to CH_STA_TX_A.
+ */
+
+/* Fields in TEGRA_SPDIF_USR_STA_RX_A */
+
+/*
+ * This 4-word deep FIFO receives user FIFO field information. The order of
+ * receive is from LSB to MSB bit.
+ */
+
+/* Fields in TEGRA_SPDIF_USR_DAT_TX_A */
+
+/*
+ * This 4-word deep FIFO transmits user FIFO field information. The order of
+ * transmission is from LSB to MSB bit.
+ */
+
+struct tegra_spdif {
+        struct clk *clk_spdif_out;
+        int clk_refs;
+        struct tegra_pcm_dma_params capture_dma_data;
+        struct tegra_pcm_dma_params playback_dma_data;
+        void __iomem *regs;
+        struct dentry *debug;
+        u32 reg_ctrl;
+};
+
+#endif