mxs-saif.h

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/*
 * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */


#ifndef _MXS_SAIF_H
#define _MXS_SAIF_H

#define SAIF_CTRL   0x0
#define SAIF_STAT   0x10
#define SAIF_DATA   0x20
#define SAIF_VERSION    0X30

/* SAIF_CTRL */
#define BM_SAIF_CTRL_SFTRST     0x80000000
#define BM_SAIF_CTRL_CLKGATE        0x40000000
#define BP_SAIF_CTRL_BITCLK_MULT_RATE   27
#define BM_SAIF_CTRL_BITCLK_MULT_RATE   0x38000000
#define BF_SAIF_CTRL_BITCLK_MULT_RATE(v) \
        (((v) << 27) & BM_SAIF_CTRL_BITCLK_MULT_RATE)
#define BM_SAIF_CTRL_BITCLK_BASE_RATE   0x04000000
#define BM_SAIF_CTRL_FIFO_ERROR_IRQ_EN  0x02000000
#define BM_SAIF_CTRL_FIFO_SERVICE_IRQ_EN    0x01000000
#define BP_SAIF_CTRL_RSRVD2     21
#define BM_SAIF_CTRL_RSRVD2     0x00E00000

#define BP_SAIF_CTRL_DMAWAIT_COUNT  16
#define BM_SAIF_CTRL_DMAWAIT_COUNT  0x001F0000
#define BF_SAIF_CTRL_DMAWAIT_COUNT(v) \
        (((v) << 16) & BM_SAIF_CTRL_DMAWAIT_COUNT)
#define BP_SAIF_CTRL_CHANNEL_NUM_SELECT 14
#define BM_SAIF_CTRL_CHANNEL_NUM_SELECT 0x0000C000
#define BF_SAIF_CTRL_CHANNEL_NUM_SELECT(v) \
        (((v) << 14) & BM_SAIF_CTRL_CHANNEL_NUM_SELECT)
#define BM_SAIF_CTRL_LRCLK_PULSE    0x00002000
#define BM_SAIF_CTRL_BIT_ORDER      0x00001000
#define BM_SAIF_CTRL_DELAY      0x00000800
#define BM_SAIF_CTRL_JUSTIFY        0x00000400
#define BM_SAIF_CTRL_LRCLK_POLARITY 0x00000200
#define BM_SAIF_CTRL_BITCLK_EDGE    0x00000100
#define BP_SAIF_CTRL_WORD_LENGTH    4
#define BM_SAIF_CTRL_WORD_LENGTH    0x000000F0
#define BF_SAIF_CTRL_WORD_LENGTH(v) \
        (((v) << 4) & BM_SAIF_CTRL_WORD_LENGTH)
#define BM_SAIF_CTRL_BITCLK_48XFS_ENABLE    0x00000008
#define BM_SAIF_CTRL_SLAVE_MODE     0x00000004
#define BM_SAIF_CTRL_READ_MODE      0x00000002
#define BM_SAIF_CTRL_RUN        0x00000001

/* SAIF_STAT */
#define BM_SAIF_STAT_PRESENT        0x80000000
#define BP_SAIF_STAT_RSRVD2     17
#define BM_SAIF_STAT_RSRVD2     0x7FFE0000
#define BF_SAIF_STAT_RSRVD2(v) \
        (((v) << 17) & BM_SAIF_STAT_RSRVD2)
#define BM_SAIF_STAT_DMA_PREQ       0x00010000
#define BP_SAIF_STAT_RSRVD1     7
#define BM_SAIF_STAT_RSRVD1     0x0000FF80
#define BF_SAIF_STAT_RSRVD1(v) \
        (((v) << 7) & BM_SAIF_STAT_RSRVD1)

#define BM_SAIF_STAT_FIFO_UNDERFLOW_IRQ 0x00000040
#define BM_SAIF_STAT_FIFO_OVERFLOW_IRQ  0x00000020
#define BM_SAIF_STAT_FIFO_SERVICE_IRQ   0x00000010
#define BP_SAIF_STAT_RSRVD0     1
#define BM_SAIF_STAT_RSRVD0     0x0000000E
#define BF_SAIF_STAT_RSRVD0(v) \
        (((v) << 1) & BM_SAIF_STAT_RSRVD0)
#define BM_SAIF_STAT_BUSY       0x00000001

/* SAFI_DATA */
#define BP_SAIF_DATA_PCM_RIGHT      16
#define BM_SAIF_DATA_PCM_RIGHT      0xFFFF0000
#define BF_SAIF_DATA_PCM_RIGHT(v) \
        (((v) << 16) & BM_SAIF_DATA_PCM_RIGHT)
#define BP_SAIF_DATA_PCM_LEFT       0
#define BM_SAIF_DATA_PCM_LEFT       0x0000FFFF
#define BF_SAIF_DATA_PCM_LEFT(v)    \
        (((v) << 0) & BM_SAIF_DATA_PCM_LEFT)

/* SAIF_VERSION */
#define BP_SAIF_VERSION_MAJOR       24
#define BM_SAIF_VERSION_MAJOR       0xFF000000
#define BF_SAIF_VERSION_MAJOR(v) \
        (((v) << 24) & BM_SAIF_VERSION_MAJOR)
#define BP_SAIF_VERSION_MINOR       16
#define BM_SAIF_VERSION_MINOR       0x00FF0000
#define BF_SAIF_VERSION_MINOR(v) \
        (((v) << 16) & BM_SAIF_VERSION_MINOR)
#define BP_SAIF_VERSION_STEP        0
#define BM_SAIF_VERSION_STEP        0x0000FFFF
#define BF_SAIF_VERSION_STEP(v) \
        (((v) << 0) & BM_SAIF_VERSION_STEP)

#define MXS_SAIF_MCLK       0

#include "mxs-pcm.h"

struct mxs_saif {
    struct device *dev;
    struct clk *clk;
    unsigned int mclk;
    unsigned int mclk_in_use;
    void __iomem *base;
    int irq;
    struct mxs_pcm_dma_params dma_param;
    unsigned int id;
    unsigned int master_id;
    unsigned int cur_rate;
    unsigned int ongoing;

    u32 fifo_underrun;
    u32 fifo_overrun;
};

extern int mxs_saif_put_mclk(unsigned int saif_id);
extern int mxs_saif_get_mclk(unsigned int saif_id, unsigned int mclk,
                    unsigned int rate);
#endif