arch/x86/include/asm/olpc.h

   1 /* OLPC machine specific definitions */
   2
   3 #ifndef _ASM_X86_OLPC_H
   4 #define _ASM_X86_OLPC_H
   5
   6 #include <asm/geode.h>
   7
   8 struct olpc_platform_t {
   9         int flags;
  10         uint32_t boardrev;
  11         int ecver;
  12 };
  13
  14 #define OLPC_F_PRESENT          0x01
  15 #define OLPC_F_DCON             0x02
  16
  17 #ifdef CONFIG_OLPC
  18
  19 extern struct olpc_platform_t olpc_platform_info;
  20
  21 /*
  22  * OLPC board IDs contain the major build number within the mask 0x0ff0,
  23  * and the minor build number within 0x000f.  Pre-builds have a minor
  24  * number less than 8, and normal builds start at 8.  For example, 0x0B10
  25  * is a PreB1, and 0x0C18 is a C1.
  26  */
  27
  28 static inline uint32_t olpc_board(uint8_t id)
  29 {
  30         return (id << 4) | 0x8;
  31 }
  32
  33 static inline uint32_t olpc_board_pre(uint8_t id)
  34 {
  35         return id << 4;
  36 }
  37
  38 static inline int machine_is_olpc(void)
  39 {
  40         return (olpc_platform_info.flags & OLPC_F_PRESENT) ? 1 : 0;
  41 }
  42
  43 /*
  44  * The DCON is OLPC's Display Controller.  It has a number of unique
  45  * features that we might want to take advantage of..
  46  */
  47 static inline int olpc_has_dcon(void)
  48 {
  49         return (olpc_platform_info.flags & OLPC_F_DCON) ? 1 : 0;
  50 }
  51
  52 /*
  53  * The "Mass Production" version of OLPC's XO is identified as being model
  54  * C2.  During the prototype phase, the following models (in chronological
  55  * order) were created: A1, B1, B2, B3, B4, C1.  The A1 through B2 models
  56  * were based on Geode GX CPUs, and models after that were based upon
  57  * Geode LX CPUs.  There were also some hand-assembled models floating
  58  * around, referred to as PreB1, PreB2, etc.
  59  */
  60 static inline int olpc_board_at_least(uint32_t rev)
  61 {
  62         return olpc_platform_info.boardrev >= rev;
  63 }
  64
  65 #else
  66
  67 static inline int machine_is_olpc(void)
  68 {
  69         return 0;
  70 }
  71
  72 static inline int olpc_has_dcon(void)
  73 {
  74         return 0;
  75 }
  76
  77 #endif
  78
  79 extern int pci_olpc_init(void);
  80
  81 /* EC related functions */
  82
  83 extern int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen,
  84                 unsigned char *outbuf, size_t outlen);
  85
  86 extern int olpc_ec_mask_set(uint8_t bits);
  87 extern int olpc_ec_mask_unset(uint8_t bits);
  88
  89 /* EC commands */
  90
  91 #define EC_FIRMWARE_REV         0x08
  92 #define EC_WLAN_ENTER_RESET     0x35
  93 #define EC_WLAN_LEAVE_RESET     0x25
  94
  95 /* SCI source values */
  96
  97 #define EC_SCI_SRC_EMPTY        0x00
  98 #define EC_SCI_SRC_GAME         0x01
  99 #define EC_SCI_SRC_BATTERY      0x02
 100 #define EC_SCI_SRC_BATSOC       0x04
 101 #define EC_SCI_SRC_BATERR       0x08
 102 #define EC_SCI_SRC_EBOOK        0x10
 103 #define EC_SCI_SRC_WLAN         0x20
 104 #define EC_SCI_SRC_ACPWR        0x40
 105 #define EC_SCI_SRC_ALL          0x7F
 106
 107 /* GPIO assignments */
 108
 109 #define OLPC_GPIO_MIC_AC        1
 110 #define OLPC_GPIO_DCON_STAT0    5
 111 #define OLPC_GPIO_DCON_STAT1    6
 112 #define OLPC_GPIO_DCON_IRQ      7
 113 #define OLPC_GPIO_THRM_ALRM     geode_gpio(10)
 114 #define OLPC_GPIO_DCON_LOAD    11
 115 #define OLPC_GPIO_DCON_BLANK   12
 116 #define OLPC_GPIO_SMB_CLK      14
 117 #define OLPC_GPIO_SMB_DATA     15
 118 #define OLPC_GPIO_WORKAUX       geode_gpio(24)
 119 #define OLPC_GPIO_LID           geode_gpio(26)
 120 #define OLPC_GPIO_ECSCI         geode_gpio(27)
 121
 122 #endif /* _ASM_X86_OLPC_H */