tegra30_i2s.h
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/*
* tegra30_i2s.h - Definitions for Tegra30 I2S driver
*
* Copyright (c) 2011,2012, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __TEGRA30_I2S_H__
#define __TEGRA30_I2S_H__
#include "tegra_pcm.h"
/* Register offsets from TEGRA30_I2S*_BASE */
#define TEGRA30_I2S_CTRL 0x0
#define TEGRA30_I2S_TIMING 0x4
#define TEGRA30_I2S_OFFSET 0x08
#define TEGRA30_I2S_CH_CTRL 0x0c
#define TEGRA30_I2S_SLOT_CTRL 0x10
#define TEGRA30_I2S_CIF_RX_CTRL 0x14
#define TEGRA30_I2S_CIF_TX_CTRL 0x18
#define TEGRA30_I2S_FLOWCTL 0x1c
#define TEGRA30_I2S_TX_STEP 0x20
#define TEGRA30_I2S_FLOW_STATUS 0x24
#define TEGRA30_I2S_FLOW_TOTAL 0x28
#define TEGRA30_I2S_FLOW_OVER 0x2c
#define TEGRA30_I2S_FLOW_UNDER 0x30
#define TEGRA30_I2S_LCOEF_1_4_0 0x34
#define TEGRA30_I2S_LCOEF_1_4_1 0x38
#define TEGRA30_I2S_LCOEF_1_4_2 0x3c
#define TEGRA30_I2S_LCOEF_1_4_3 0x40
#define TEGRA30_I2S_LCOEF_1_4_4 0x44
#define TEGRA30_I2S_LCOEF_1_4_5 0x48
#define TEGRA30_I2S_LCOEF_2_4_0 0x4c
#define TEGRA30_I2S_LCOEF_2_4_1 0x50
#define TEGRA30_I2S_LCOEF_2_4_2 0x54
/* Fields in TEGRA30_I2S_CTRL */
#define TEGRA30_I2S_CTRL_XFER_EN_TX (1 << 31)
#define TEGRA30_I2S_CTRL_XFER_EN_RX (1 << 30)
#define TEGRA30_I2S_CTRL_CG_EN (1 << 29)
#define TEGRA30_I2S_CTRL_SOFT_RESET (1 << 28)
#define TEGRA30_I2S_CTRL_TX_FLOWCTL_EN (1 << 27)
#define TEGRA30_I2S_CTRL_OBS_SEL_SHIFT 24
#define TEGRA30_I2S_CTRL_OBS_SEL_MASK (7 << TEGRA30_I2S_CTRL_OBS_SEL_SHIFT)
#define TEGRA30_I2S_FRAME_FORMAT_LRCK 0
#define TEGRA30_I2S_FRAME_FORMAT_FSYNC 1
#define TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT 12
#define TEGRA30_I2S_CTRL_FRAME_FORMAT_MASK (7 << TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT)
#define TEGRA30_I2S_CTRL_FRAME_FORMAT_LRCK (TEGRA30_I2S_FRAME_FORMAT_LRCK << TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT)
#define TEGRA30_I2S_CTRL_FRAME_FORMAT_FSYNC (TEGRA30_I2S_FRAME_FORMAT_FSYNC << TEGRA30_I2S_CTRL_FRAME_FORMAT_SHIFT)
#define TEGRA30_I2S_CTRL_MASTER_ENABLE (1 << 10)
#define TEGRA30_I2S_LRCK_LEFT_LOW 0
#define TEGRA30_I2S_LRCK_RIGHT_LOW 1
#define TEGRA30_I2S_CTRL_LRCK_SHIFT 9
#define TEGRA30_I2S_CTRL_LRCK_MASK (1 << TEGRA30_I2S_CTRL_LRCK_SHIFT)
#define TEGRA30_I2S_CTRL_LRCK_L_LOW (TEGRA30_I2S_LRCK_LEFT_LOW << TEGRA30_I2S_CTRL_LRCK_SHIFT)
#define TEGRA30_I2S_CTRL_LRCK_R_LOW (TEGRA30_I2S_LRCK_RIGHT_LOW << TEGRA30_I2S_CTRL_LRCK_SHIFT)
#define TEGRA30_I2S_CTRL_LPBK_ENABLE (1 << 8)
#define TEGRA30_I2S_BIT_CODE_LINEAR 0
#define TEGRA30_I2S_BIT_CODE_ULAW 1
#define TEGRA30_I2S_BIT_CODE_ALAW 2
#define TEGRA30_I2S_CTRL_BIT_CODE_SHIFT 4
#define TEGRA30_I2S_CTRL_BIT_CODE_MASK (3 << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_CODE_LINEAR (TEGRA30_I2S_BIT_CODE_LINEAR << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_CODE_ULAW (TEGRA30_I2S_BIT_CODE_ULAW << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_CODE_ALAW (TEGRA30_I2S_BIT_CODE_ALAW << TEGRA30_I2S_CTRL_BIT_CODE_SHIFT)
#define TEGRA30_I2S_BITS_8 1
#define TEGRA30_I2S_BITS_12 2
#define TEGRA30_I2S_BITS_16 3
#define TEGRA30_I2S_BITS_20 4
#define TEGRA30_I2S_BITS_24 5
#define TEGRA30_I2S_BITS_28 6
#define TEGRA30_I2S_BITS_32 7
/* Sample container size; see {RX,TX}_MASK field in CH_CTRL below */
#define TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT 0
#define TEGRA30_I2S_CTRL_BIT_SIZE_MASK (7 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_SIZE_8 (TEGRA30_I2S_BITS_8 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_SIZE_12 (TEGRA30_I2S_BITS_12 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_SIZE_16 (TEGRA30_I2S_BITS_16 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_SIZE_20 (TEGRA30_I2S_BITS_20 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_SIZE_24 (TEGRA30_I2S_BITS_24 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_SIZE_28 (TEGRA30_I2S_BITS_28 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
#define TEGRA30_I2S_CTRL_BIT_SIZE_32 (TEGRA30_I2S_BITS_32 << TEGRA30_I2S_CTRL_BIT_SIZE_SHIFT)
/* Fields in TEGRA30_I2S_TIMING */
#define TEGRA30_I2S_TIMING_NON_SYM_ENABLE (1 << 12)
#define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT 0
#define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US 0x7ff
#define TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK (TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_MASK_US << TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT)
/* Fields in TEGRA30_I2S_OFFSET */
#define TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_SHIFT 16
#define TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_MASK_US 0x7ff
#define TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_MASK (TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_MASK_US << TEGRA30_I2S_OFFSET_RX_DATA_OFFSET_SHIFT)
#define TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_SHIFT 0
#define TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_MASK_US 0x7ff
#define TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_MASK (TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_MASK_US << TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_SHIFT)
/* Fields in TEGRA30_I2S_CH_CTRL */
/* (FSYNC width - 1) in bit clocks */
#define TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_SHIFT 24
#define TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_MASK_US 0xff
#define TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_MASK (TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_MASK_US << TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_SHIFT)
#define TEGRA30_I2S_HIGHZ_NO 0
#define TEGRA30_I2S_HIGHZ_YES 1
#define TEGRA30_I2S_HIGHZ_ON_HALF_BIT_CLK 2
#define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT 12
#define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_MASK (3 << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
#define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_NO (TEGRA30_I2S_HIGHZ_NO << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
#define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_YES (TEGRA30_I2S_HIGHZ_YES << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
#define TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_ON_HALF_BIT_CLK (TEGRA30_I2S_HIGHZ_ON_HALF_BIT_CLK << TEGRA30_I2S_CH_CTRL_HIGHZ_CTRL_SHIFT)
#define TEGRA30_I2S_MSB_FIRST 0
#define TEGRA30_I2S_LSB_FIRST 1
#define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT 10
#define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_MASK (1 << TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT)
#define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_MSB_FIRST (TEGRA30_I2S_MSB_FIRST << TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT)
#define TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_LSB_FIRST (TEGRA30_I2S_LSB_FIRST << TEGRA30_I2S_CH_CTRL_RX_BIT_ORDER_SHIFT)
#define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT 9
#define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_MASK (1 << TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT)
#define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_MSB_FIRST (TEGRA30_I2S_MSB_FIRST << TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT)
#define TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_LSB_FIRST (TEGRA30_I2S_LSB_FIRST << TEGRA30_I2S_CH_CTRL_TX_BIT_ORDER_SHIFT)
#define TEGRA30_I2S_POS_EDGE 0
#define TEGRA30_I2S_NEG_EDGE 1
#define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT 8
#define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_MASK (1 << TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT)
#define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_POS_EDGE (TEGRA30_I2S_POS_EDGE << TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT)
#define TEGRA30_I2S_CH_CTRL_EGDE_CTRL_NEG_EDGE (TEGRA30_I2S_NEG_EDGE << TEGRA30_I2S_CH_CTRL_EGDE_CTRL_SHIFT)
/* Sample size is # bits from BIT_SIZE minus this field */
#define TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_SHIFT 4
#define TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_MASK_US 7
#define TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_MASK (TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_MASK_US << TEGRA30_I2S_CH_CTRL_RX_MASK_BITS_SHIFT)
#define TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_SHIFT 0
#define TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_MASK_US 7
#define TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_MASK (TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_MASK_US << TEGRA30_I2S_CH_CTRL_TX_MASK_BITS_SHIFT)
/* Fields in TEGRA30_I2S_SLOT_CTRL */
/* Number of slots in frame, minus 1 */
#define TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_SHIFT 16
#define TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_MASK_US 7
#define TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_MASK (TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOT_MASK_US << TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOT_SHIFT)
/* TDM mode slot enable bitmask */
#define TEGRA30_I2S_SLOT_CTRL_RX_SLOT_ENABLES_SHIFT 8
#define TEGRA30_I2S_SLOT_CTRL_RX_SLOT_ENABLES_MASK (0xff << TEGRA30_I2S_SLOT_CTRL_RX_SLOT_ENABLES_SHIFT)
#define TEGRA30_I2S_SLOT_CTRL_TX_SLOT_ENABLES_SHIFT 0
#define TEGRA30_I2S_SLOT_CTRL_TX_SLOT_ENABLES_MASK (0xff << TEGRA30_I2S_SLOT_CTRL_TX_SLOT_ENABLES_SHIFT)
/* Fields in TEGRA30_I2S_CIF_RX_CTRL */
/* Uses field from TEGRA30_AUDIOCIF_CTRL_* in tegra30_ahub.h */
/* Fields in TEGRA30_I2S_CIF_TX_CTRL */
/* Uses field from TEGRA30_AUDIOCIF_CTRL_* in tegra30_ahub.h */
/* Fields in TEGRA30_I2S_FLOWCTL */
#define TEGRA30_I2S_FILTER_LINEAR 0
#define TEGRA30_I2S_FILTER_QUAD 1
#define TEGRA30_I2S_FLOWCTL_FILTER_SHIFT 31
#define TEGRA30_I2S_FLOWCTL_FILTER_MASK (1 << TEGRA30_I2S_FLOWCTL_FILTER_SHIFT)
#define TEGRA30_I2S_FLOWCTL_FILTER_LINEAR (TEGRA30_I2S_FILTER_LINEAR << TEGRA30_I2S_FLOWCTL_FILTER_SHIFT)
#define TEGRA30_I2S_FLOWCTL_FILTER_QUAD (TEGRA30_I2S_FILTER_QUAD << TEGRA30_I2S_FLOWCTL_FILTER_SHIFT)
/* Fields in TEGRA30_I2S_TX_STEP */
#define TEGRA30_I2S_TX_STEP_SHIFT 0
#define TEGRA30_I2S_TX_STEP_MASK_US 0xffff
#define TEGRA30_I2S_TX_STEP_MASK (TEGRA30_I2S_TX_STEP_MASK_US << TEGRA30_I2S_TX_STEP_SHIFT)
/* Fields in TEGRA30_I2S_FLOW_STATUS */
#define TEGRA30_I2S_FLOW_STATUS_UNDERFLOW (1 << 31)
#define TEGRA30_I2S_FLOW_STATUS_OVERFLOW (1 << 30)
#define TEGRA30_I2S_FLOW_STATUS_MONITOR_INT_EN (1 << 4)
#define TEGRA30_I2S_FLOW_STATUS_COUNTER_CLR (1 << 3)
#define TEGRA30_I2S_FLOW_STATUS_MONITOR_CLR (1 << 2)
#define TEGRA30_I2S_FLOW_STATUS_COUNTER_EN (1 << 1)
#define TEGRA30_I2S_FLOW_STATUS_MONITOR_EN (1 << 0)
/*
* There are no fields in TEGRA30_I2S_FLOW_TOTAL, TEGRA30_I2S_FLOW_OVER,
* TEGRA30_I2S_FLOW_UNDER; they are counters taking the whole register.
*/
/* Fields in TEGRA30_I2S_LCOEF_* */
#define TEGRA30_I2S_LCOEF_COEF_SHIFT 0
#define TEGRA30_I2S_LCOEF_COEF_MASK_US 0xffff
#define TEGRA30_I2S_LCOEF_COEF_MASK (TEGRA30_I2S_LCOEF_COEF_MASK_US << TEGRA30_I2S_LCOEF_COEF_SHIFT)
struct tegra30_i2s_soc_data {
void (*set_audio_cif)(struct regmap *regmap,
unsigned int reg,
struct tegra30_ahub_cif_conf *conf);
};
struct tegra30_i2s {
const struct tegra30_i2s_soc_data *soc_data;
struct snd_soc_dai_driver dai;
int cif_id;
struct clk *clk_i2s;
enum tegra30_ahub_txcif capture_i2s_cif;
enum tegra30_ahub_rxcif capture_fifo_cif;
char capture_dma_chan[8];
struct snd_dmaengine_dai_dma_data capture_dma_data;
enum tegra30_ahub_rxcif playback_i2s_cif;
enum tegra30_ahub_txcif playback_fifo_cif;
char playback_dma_chan[8];
struct snd_dmaengine_dai_dma_data playback_dma_data;
struct regmap *regmap;
struct snd_dmaengine_pcm_config dma_config;
};
#endif