arch/arm/mach-omap2/cm2xxx_3xxx.h

   1 /*
   2  * OMAP2/3 Clock Management (CM) register definitions
   3  *
   4  * Copyright (C) 2007-2009 Texas Instruments, Inc.
   5  * Copyright (C) 2007-2010 Nokia Corporation
   6  * Paul Walmsley
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * The CM hardware modules on the OMAP2/3 are quite similar to each
  13  * other.  The CM modules/instances on OMAP4 are quite different, so
  14  * they are handled in a separate file.
  15  */
  16 #ifndef __ARCH_ASM_MACH_OMAP2_CM2XXX_3XXX_H
  17 #define __ARCH_ASM_MACH_OMAP2_CM2XXX_3XXX_H
  18
  19 #include "cm.h"
  20
  21 /*
  22  * Module specific CM register offsets from CM_BASE + domain offset
  23  * Use cm_{read,write}_mod_reg() with these registers.
  24  * These register offsets generally appear in more than one PRCM submodule.
  25  */
  26
  27 /* Common between OMAP2 and OMAP3 */
  28
  29 #define CM_FCLKEN                                       0x0000
  30 #define CM_FCLKEN1                                      CM_FCLKEN
  31 #define CM_CLKEN                                        CM_FCLKEN
  32 #define CM_ICLKEN                                       0x0010
  33 #define CM_ICLKEN1                                      CM_ICLKEN
  34 #define CM_ICLKEN2                                      0x0014
  35 #define CM_ICLKEN3                                      0x0018
  36 #define CM_IDLEST                                       0x0020
  37 #define CM_IDLEST1                                      CM_IDLEST
  38 #define CM_IDLEST2                                      0x0024
  39 #define OMAP2430_CM_IDLEST3                             0x0028
  40 #define CM_AUTOIDLE                                     0x0030
  41 #define CM_AUTOIDLE1                                    CM_AUTOIDLE
  42 #define CM_AUTOIDLE2                                    0x0034
  43 #define CM_AUTOIDLE3                                    0x0038
  44 #define CM_CLKSEL                                       0x0040
  45 #define CM_CLKSEL1                                      CM_CLKSEL
  46 #define CM_CLKSEL2                                      0x0044
  47 #define OMAP2_CM_CLKSTCTRL                              0x0048
  48
  49 #ifndef __ASSEMBLER__
  50
  51 #include <linux/io.h>
  52
  53 static inline u32 omap2_cm_read_mod_reg(s16 module, u16 idx)
  54 {
  55         return readl_relaxed(cm_base.va + module + idx);
  56 }
  57
  58 static inline void omap2_cm_write_mod_reg(u32 val, s16 module, u16 idx)
  59 {
  60         writel_relaxed(val, cm_base.va + module + idx);
  61 }
  62
  63 /* Read-modify-write a register in a CM module. Caller must lock */
  64 static inline u32 omap2_cm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module,
  65                                             s16 idx)
  66 {
  67         u32 v;
  68
  69         v = omap2_cm_read_mod_reg(module, idx);
  70         v &= ~mask;
  71         v |= bits;
  72         omap2_cm_write_mod_reg(v, module, idx);
  73
  74         return v;
  75 }
  76
  77 /* Read a CM register, AND it, and shift the result down to bit 0 */
  78 static inline u32 omap2_cm_read_mod_bits_shift(s16 domain, s16 idx, u32 mask)
  79 {
  80         u32 v;
  81
  82         v = omap2_cm_read_mod_reg(domain, idx);
  83         v &= mask;
  84         v >>= __ffs(mask);
  85
  86         return v;
  87 }
  88
  89 static inline u32 omap2_cm_set_mod_reg_bits(u32 bits, s16 module, s16 idx)
  90 {
  91         return omap2_cm_rmw_mod_reg_bits(bits, bits, module, idx);
  92 }
  93
  94 static inline u32 omap2_cm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx)
  95 {
  96         return omap2_cm_rmw_mod_reg_bits(bits, 0x0, module, idx);
  97 }
  98
  99 extern int omap2xxx_cm_apll54_enable(void);
 100 extern void omap2xxx_cm_apll54_disable(void);
 101 extern int omap2xxx_cm_apll96_enable(void);
 102 extern void omap2xxx_cm_apll96_disable(void);
 103
 104 #endif
 105
 106 /* CM register bits shared between 24XX and 3430 */
 107
 108 /* CM_CLKSEL_GFX */
 109 #define OMAP_CLKSEL_GFX_SHIFT                           0
 110 #define OMAP_CLKSEL_GFX_MASK                            (0x7 << 0)
 111 #define OMAP_CLKSEL_GFX_WIDTH                           3
 112
 113 /* CM_ICLKEN_GFX */
 114 #define OMAP_EN_GFX_SHIFT                               0
 115 #define OMAP_EN_GFX_MASK                                (1 << 0)
 116
 117 /* CM_IDLEST_GFX */
 118 #define OMAP_ST_GFX_MASK                                (1 << 0)
 119
 120 #endif