arch/arm/mach-davinci/include/mach/cputype.h

   1 /*
   2  * DaVinci CPU type detection
   3  *
   4  * Author: Kevin Hilman, Deep Root Systems, LLC
   5  *
   6  * Defines the cpu_is_*() macros for runtime detection of DaVinci
   7  * device type.  In addtion, if support for a given device is not
   8  * compiled in to the kernel, the macros return 0 so that
   9  * resulting code can be optimized out.
  10  *
  11  * 2009 (c) Deep Root Systems, LLC. This file is licensed under
  12  * the terms of the GNU General Public License version 2. This program
  13  * is licensed "as is" without any warranty of any kind, whether express
  14  * or implied.
  15  */
  16 #ifndef _ASM_ARCH_CPU_H
  17 #define _ASM_ARCH_CPU_H
  18
  19 #include <mach/common.h>
  20
  21 struct davinci_id {
  22         u8      variant;        /* JTAG ID bits 31:28 */
  23         u16     part_no;        /* JTAG ID bits 27:12 */
  24         u16     manufacturer;   /* JTAG ID bits 11:1 */
  25         u32     cpu_id;
  26         char    *name;
  27 };
  28
  29 /* Can use lower 16 bits of cpu id  for a variant when required */
  30 #define DAVINCI_CPU_ID_DM6446           0x64460000
  31 #define DAVINCI_CPU_ID_DM6467           0x64670000
  32 #define DAVINCI_CPU_ID_DM355            0x03550000
  33 #define DAVINCI_CPU_ID_DM365            0x03650000
  34
  35 #define IS_DAVINCI_CPU(type, id)                                        \
  36 static inline int is_davinci_ ##type(void)                              \
  37 {                                                                       \
  38         return (davinci_soc_info.cpu_id == (id));                       \
  39 }
  40
  41 IS_DAVINCI_CPU(dm644x, DAVINCI_CPU_ID_DM6446)
  42 IS_DAVINCI_CPU(dm646x, DAVINCI_CPU_ID_DM6467)
  43 IS_DAVINCI_CPU(dm355, DAVINCI_CPU_ID_DM355)
  44 IS_DAVINCI_CPU(dm365, DAVINCI_CPU_ID_DM365)
  45
  46 #ifdef CONFIG_ARCH_DAVINCI_DM644x
  47 #define cpu_is_davinci_dm644x() is_davinci_dm644x()
  48 #else
  49 #define cpu_is_davinci_dm644x() 0
  50 #endif
  51
  52 #ifdef CONFIG_ARCH_DAVINCI_DM646x
  53 #define cpu_is_davinci_dm646x() is_davinci_dm646x()
  54 #else
  55 #define cpu_is_davinci_dm646x() 0
  56 #endif
  57
  58 #ifdef CONFIG_ARCH_DAVINCI_DM355
  59 #define cpu_is_davinci_dm355() is_davinci_dm355()
  60 #else
  61 #define cpu_is_davinci_dm355() 0
  62 #endif
  63
  64 #ifdef CONFIG_ARCH_DAVINCI_DM365
  65 #define cpu_is_davinci_dm365() is_davinci_dm365()
  66 #else
  67 #define cpu_is_davinci_dm365() 0
  68 #endif
  69
  70 #endif