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

source code of linux/arch/x86/include/asm/olpc.h