LXR linux/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
   8struct 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
  19extern 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
  28static inline uint32_t olpc_board(uint8_t id)
  29{
  30        return (id << 4) | 0x8;
  31}
  32
  33static inline uint32_t olpc_board_pre(uint8_t id)
  34{
  35        return id << 4;
  36}
  37
  38static 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 */
  47static 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 */
  60static inline int olpc_board_at_least(uint32_t rev)
  61{
  62        return olpc_platform_info.boardrev >= rev;
  63}
  64
  65#else
  66
  67static inline int machine_is_olpc(void)
  68{
  69        return 0;
  70}
  71
  72static inline int olpc_has_dcon(void)
  73{
  74        return 0;
  75}
  76
  77#endif
  78
  79extern int pci_olpc_init(void);
  80
  81/* EC related functions */
  82
  83extern int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen,
  84                unsigned char *outbuf, size_t outlen);
  85
  86extern int olpc_ec_mask_set(uint8_t bits);
  87extern 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 */
 123