LXR linux/arch/x86/include/asm/olpc.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/* OLPC machine specific definitions */
   3
   4#ifndef _ASM_X86_OLPC_H
   5#define _ASM_X86_OLPC_H
   6
   7#include <asm/geode.h>
   8
   9struct olpc_platform_t {
  10        int flags;
  11        uint32_t boardrev;
  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
  79#ifdef CONFIG_OLPC_XO1_PM
  80extern void do_olpc_suspend_lowlevel(void);
  81extern void olpc_xo1_pm_wakeup_set(u16 value);
  82extern void olpc_xo1_pm_wakeup_clear(u16 value);
  83#endif
  84
  85extern int pci_olpc_init(void);
  86
  87/* GPIO assignments */
  88
  89#define OLPC_GPIO_MIC_AC        1
  90#define OLPC_GPIO_DCON_STAT0    5
  91#define OLPC_GPIO_DCON_STAT1    6
  92#define OLPC_GPIO_DCON_IRQ      7
  93#define OLPC_GPIO_THRM_ALRM     geode_gpio(10)
  94#define OLPC_GPIO_DCON_LOAD    11
  95#define OLPC_GPIO_DCON_BLANK   12
  96#define OLPC_GPIO_SMB_CLK      14
  97#define OLPC_GPIO_SMB_DATA     15
  98#define OLPC_GPIO_WORKAUX       geode_gpio(24)
  99#define OLPC_GPIO_LID           26
 100#define OLPC_GPIO_ECSCI         27
 101
 102#endif /* _ASM_X86_OLPC_H */
 103