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
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