arch/arm/mach-omap2/cm2xxx_3xxx.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * OMAP2/3 Clock Management (CM) register definitions
   4  *
   5  * Copyright (C) 2007-2009 Texas Instruments, Inc.
   6  * Copyright (C) 2007-2010 Nokia Corporation
   7  * Paul Walmsley
   8  *
   9  * The CM hardware modules on the OMAP2/3 are quite similar to each
  10  * other.  The CM modules/instances on OMAP4 are quite different, so
  11  * they are handled in a separate file.
  12  */
  13 #ifndef __ARCH_ASM_MACH_OMAP2_CM2XXX_3XXX_H
  14 #define __ARCH_ASM_MACH_OMAP2_CM2XXX_3XXX_H
  15
  16 #include "cm.h"
  17
  18 /*
  19  * Module specific CM register offsets from CM_BASE + domain offset
  20  * Use cm_{read,write}_mod_reg() with these registers.
  21  * These register offsets generally appear in more than one PRCM submodule.
  22  */
  23
  24 /* Common between OMAP2 and OMAP3 */
  25
  26 #define CM_FCLKEN                                       0x0000
  27 #define CM_FCLKEN1                                      CM_FCLKEN
  28 #define CM_CLKEN                                        CM_FCLKEN
  29 #define CM_ICLKEN                                       0x0010
  30 #define CM_ICLKEN1                                      CM_ICLKEN
  31 #define CM_ICLKEN2                                      0x0014
  32 #define CM_ICLKEN3                                      0x0018
  33 #define CM_IDLEST                                       0x0020
  34 #define CM_IDLEST1                                      CM_IDLEST
  35 #define CM_IDLEST2                                      0x0024
  36 #define OMAP2430_CM_IDLEST3                             0x0028
  37 #define CM_AUTOIDLE                                     0x0030
  38 #define CM_AUTOIDLE1                                    CM_AUTOIDLE
  39 #define CM_AUTOIDLE2                                    0x0034
  40 #define CM_AUTOIDLE3                                    0x0038
  41 #define CM_CLKSEL                                       0x0040
  42 #define CM_CLKSEL1                                      CM_CLKSEL
  43 #define CM_CLKSEL2                                      0x0044
  44 #define OMAP2_CM_CLKSTCTRL                              0x0048
  45
  46 #ifndef __ASSEMBLER__
  47
  48 #include <linux/io.h>
  49
  50 static inline u32 omap2_cm_read_mod_reg(s16 module, u16 idx)
  51 {
  52         return readl_relaxed(cm_base.va + module + idx);
  53 }
  54
  55 static inline void omap2_cm_write_mod_reg(u32 val, s16 module, u16 idx)
  56 {
  57         writel_relaxed(val, cm_base.va + module + idx);
  58 }
  59
  60 /* Read-modify-write a register in a CM module. Caller must lock */
  61 static inline u32 omap2_cm_rmw_mod_reg_bits(u32 mask, u32 bits, s16 module,
  62                                             s16 idx)
  63 {
  64         u32 v;
  65
  66         v = omap2_cm_read_mod_reg(module, idx);
  67         v &= ~mask;
  68         v |= bits;
  69         omap2_cm_write_mod_reg(v, module, idx);
  70
  71         return v;
  72 }
  73
  74 /* Read a CM register, AND it, and shift the result down to bit 0 */
  75 static inline u32 omap2_cm_read_mod_bits_shift(s16 domain, s16 idx, u32 mask)
  76 {
  77         u32 v;
  78
  79         v = omap2_cm_read_mod_reg(domain, idx);
  80         v &= mask;
  81         v >>= __ffs(mask);
  82
  83         return v;
  84 }
  85
  86 static inline u32 omap2_cm_set_mod_reg_bits(u32 bits, s16 module, s16 idx)
  87 {
  88         return omap2_cm_rmw_mod_reg_bits(bits, bits, module, idx);
  89 }
  90
  91 static inline u32 omap2_cm_clear_mod_reg_bits(u32 bits, s16 module, s16 idx)
  92 {
  93         return omap2_cm_rmw_mod_reg_bits(bits, 0x0, module, idx);
  94 }
  95
  96 extern int omap2xxx_cm_apll54_enable(void);
  97 extern void omap2xxx_cm_apll54_disable(void);
  98 extern int omap2xxx_cm_apll96_enable(void);
  99 extern void omap2xxx_cm_apll96_disable(void);
 100
 101 #endif
 102
 103 /* CM register bits shared between 24XX and 3430 */
 104
 105 /* CM_CLKSEL_GFX */
 106 #define OMAP_CLKSEL_GFX_SHIFT                           0
 107 #define OMAP_CLKSEL_GFX_MASK                            (0x7 << 0)
 108 #define OMAP_CLKSEL_GFX_WIDTH                           3
 109
 110 /* CM_ICLKEN_GFX */
 111 #define OMAP_EN_GFX_SHIFT                               0
 112 #define OMAP_EN_GFX_MASK                                (1 << 0)
 113
 114 /* CM_IDLEST_GFX */
 115 #define OMAP_ST_GFX_MASK                                (1 << 0)
 116
 117 #endif