include/asm-arm/arch-pxa/ssp.h

   1 /*
   2  *  ssp.h
   3  *
   4  *  Copyright (C) 2003 Russell King, All Rights Reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * This driver supports the following PXA CPU/SSP ports:-
  11  *
  12  *       PXA250     SSP
  13  *       PXA255     SSP, NSSP
  14  *       PXA26x     SSP, NSSP, ASSP
  15  *       PXA27x     SSP1, SSP2, SSP3
  16  */
  17
  18 #ifndef SSP_H
  19 #define SSP_H
  20
  21 /*
  22  * SSP initialisation flags
  23  */
  24 #define SSP_NO_IRQ      0x1             /* don't register an irq handler in SSP driver */
  25
  26 struct ssp_state {
  27         u32     cr0;
  28         u32 cr1;
  29         u32 to;
  30         u32 psp;
  31 };
  32
  33 struct ssp_dev {
  34         u32 port;
  35         u32 mode;
  36         u32 flags;
  37         u32 psp_flags;
  38         u32 speed;
  39         int irq;
  40 };
  41
  42 int ssp_write_word(struct ssp_dev *dev, u32 data);
  43 int ssp_read_word(struct ssp_dev *dev, u32 *data);
  44 int ssp_flush(struct ssp_dev *dev);
  45 void ssp_enable(struct ssp_dev *dev);
  46 void ssp_disable(struct ssp_dev *dev);
  47 void ssp_save_state(struct ssp_dev *dev, struct ssp_state *ssp);
  48 void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *ssp);
  49 int ssp_init(struct ssp_dev *dev, u32 port, u32 init_flags);
  50 int ssp_config(struct ssp_dev *dev, u32 mode, u32 flags, u32 psp_flags, u32 speed);
  51 void ssp_exit(struct ssp_dev *dev);
  52
  53 #endif