release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/staging/tidspbridge/include/dspbridge/clk.h

   1 /*
   2  * clk.h
   3  *
   4  * DSP-BIOS Bridge driver support functions for TI OMAP processors.
   5  *
   6  * Provides Clock functions.
   7  *
   8  * Copyright (C) 2005-2006 Texas Instruments, Inc.
   9  *
  10  * This package is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  *
  14  * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  15  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  16  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  17  */
  18
  19 #ifndef _CLK_H
  20 #define _CLK_H
  21
  22 enum dsp_clk_id {
  23         DSP_CLK_IVA2 = 0,
  24         DSP_CLK_GPT5,
  25         DSP_CLK_GPT6,
  26         DSP_CLK_GPT7,
  27         DSP_CLK_GPT8,
  28         DSP_CLK_WDT3,
  29         DSP_CLK_MCBSP1,
  30         DSP_CLK_MCBSP2,
  31         DSP_CLK_MCBSP3,
  32         DSP_CLK_MCBSP4,
  33         DSP_CLK_MCBSP5,
  34         DSP_CLK_SSI,
  35         DSP_CLK_NOT_DEFINED
  36 };
  37
  38 /*
  39  *  ======== dsp_clk_exit ========
  40  *  Purpose:
  41  *      Discontinue usage of module; free resources when reference count
  42  *      reaches 0.
  43  *  Parameters:
  44  *  Returns:
  45  *  Requires:
  46  *      CLK initialized.
  47  *  Ensures:
  48  *      Resources used by module are freed when cRef reaches zero.
  49  */
  50 extern void dsp_clk_exit(void);
  51
  52 /*
  53  *  ======== dsp_clk_init ========
  54  *  Purpose:
  55  *      Initializes private state of CLK module.
  56  *  Parameters:
  57  *  Returns:
  58  *      TRUE if initialized; FALSE if error occured.
  59  *  Requires:
  60  *  Ensures:
  61  *      CLK initialized.
  62  */
  63 extern void dsp_clk_init(void);
  64
  65 void dsp_gpt_wait_overflow(short int clk_id, unsigned int load);
  66
  67 /*
  68  *  ======== dsp_clk_enable ========
  69  *  Purpose:
  70  *      Enables the clock requested.
  71  *  Parameters:
  72  *  Returns:
  73  *      0:      Success.
  74  *      -EPERM: Error occured while enabling the clock.
  75  *  Requires:
  76  *  Ensures:
  77  */
  78 extern int dsp_clk_enable(enum dsp_clk_id clk_id);
  79
  80 u32 dsp_clock_enable_all(u32 dsp_per_clocks);
  81
  82 /*
  83  *  ======== dsp_clk_disable ========
  84  *  Purpose:
  85  *      Disables the clock requested.
  86  *  Parameters:
  87  *  Returns:
  88  *      0:        Success.
  89  *      -EPERM:      Error occured while disabling the clock.
  90  *  Requires:
  91  *  Ensures:
  92  */
  93 extern int dsp_clk_disable(enum dsp_clk_id clk_id);
  94
  95 extern u32 dsp_clk_get_iva2_rate(void);
  96
  97 u32 dsp_clock_disable_all(u32 dsp_per_clocks);
  98
  99 extern void ssi_clk_prepare(bool FLAG);
 100
 101 #endif /* _SYNC_H */