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 | |
9 | struct 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 | |
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 | #ifdef CONFIG_OLPC_XO1_PM |
80 | extern void do_olpc_suspend_lowlevel(void); |
81 | extern void olpc_xo1_pm_wakeup_set(u16 value); |
82 | extern void olpc_xo1_pm_wakeup_clear(u16 value); |
83 | #endif |
84 | |
85 | extern 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 | |