suart_utils.h

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/*
 * linux/<file location within the kernel tree>
 *
 * Copyright (C) 2010 Texas Instruments Incorporated
 * Author: Ganeshan N
 *
 * Based on <Give reference of old kernel file from which this file is derived from>
 *
 * 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 version 2.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
 * whether express or implied; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 */

#ifndef _SUART_UTILS_H_
#define _SUART_UTILS_H_

#ifdef __cplusplus
extern "C" {
#endif

/*
 *====================
 * Includes
 *====================
 */
#include "tistdtypes.h"

/* ************ Serializers ***************** */
#define PRU_SUART_SERIALIZER_0          (0u)

#define PRU_SUART_SERIALIZER_1          (1u)

#define PRU_SUART_SERIALIZER_2          (2u)

#define PRU_SUART_SERIALIZER_3          (3u)

#define PRU_SUART_SERIALIZER_4          (4u)

#define PRU_SUART_SERIALIZER_5          (5u)

#define PRU_SUART_SERIALIZER_6          (6u)

#define PRU_SUART_SERIALIZER_7          (7u)

#define PRU_SUART_SERIALIZER_8          (8u)

#define PRU_SUART_SERIALIZER_9          (9u)

#define PRU_SUART_SERIALIZER_10         (10u)

#define PRU_SUART_SERIALIZER_11         (11u)

#define PRU_SUART_SERIALIZER_12         (12u)

#define PRU_SUART_SERIALIZER_13         (13u)

#define PRU_SUART_SERIALIZER_14         (14u)

#define PRU_SUART_SERIALIZER_15         (15u)

#define PRU_SUART_SERIALIZER_NONE       (16u)

/* Total number of baud rates supported */
#define SUART_NUM_OF_BAUDS_SUPPORTED    13

#define MCASP_PDIR_VAL ( \
            CSL_MCASP_PDIR_AFSR_OUTPUT<<CSL_MCASP_PDIR_AFSR_SHIFT | \
            CSL_MCASP_PDIR_AHCLKR_OUTPUT<<CSL_MCASP_PDIR_AHCLKR_SHIFT | \
            CSL_MCASP_PDIR_ACLKR_OUTPUT<<CSL_MCASP_PDIR_ACLKR_SHIFT | \
            CSL_MCASP_PDIR_AFSX_OUTPUT<<CSL_MCASP_PDIR_AFSX_SHIFT | \
            CSL_MCASP_PDIR_AHCLKX_OUTPUT<<CSL_MCASP_PDIR_AHCLKX_SHIFT | \
            CSL_MCASP_PDIR_ACLKX_OUTPUT<<CSL_MCASP_PDIR_ACLKX_SHIFT)

    extern void suart_mcasp_reset (arm_pru_iomap * pru_arm_iomap);
    extern void suart_mcasp_config(unsigned int mcasp_addr,
                       unsigned int txBaudValue,
                       unsigned int rxBaudValue,
                       unsigned int oversampling,
                       arm_pru_iomap * pru_arm_iomap);

    extern short suart_asp_baud_set(unsigned int txBaudValue,
                    unsigned int rxBaudValue,
                    unsigned int oversampling,
                    arm_pru_iomap * pru_arm_iomap);

    extern void suart_mcasp_psc_disable(unsigned int psc1_addr);
    extern void suart_mcasp_psc_enable(unsigned int psc1_addr);
    extern short suart_asp_serializer_deactivate (unsigned short u16srNum,
             arm_pru_iomap * pru_arm_iomap);

    extern void suart_mcasp_tx_serialzier_set(unsigned int serializerNum,
                  arm_pru_iomap * pru_arm_iomap);
#ifdef __cplusplus
}               /* End of extern C */
#endif              /* #ifdef __cplusplus */
#endif