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olpc.h
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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 
9  int flags;
11  int ecver;
12 };
13 
14 #define OLPC_F_PRESENT 0x01
15 #define OLPC_F_DCON 0x02
16 #define OLPC_F_EC_WIDE_SCI 0x04
17 
18 #ifdef CONFIG_OLPC
19 
21 
22 /*
23  * OLPC board IDs contain the major build number within the mask 0x0ff0,
24  * and the minor build number within 0x000f. Pre-builds have a minor
25  * number less than 8, and normal builds start at 8. For example, 0x0B10
26  * is a PreB1, and 0x0C18 is a C1.
27  */
28 
29 static inline uint32_t olpc_board(uint8_t id)
30 {
31  return (id << 4) | 0x8;
32 }
33 
34 static inline uint32_t olpc_board_pre(uint8_t id)
35 {
36  return id << 4;
37 }
38 
39 static inline int machine_is_olpc(void)
40 {
41  return (olpc_platform_info.flags & OLPC_F_PRESENT) ? 1 : 0;
42 }
43 
44 /*
45  * The DCON is OLPC's Display Controller. It has a number of unique
46  * features that we might want to take advantage of..
47  */
48 static inline int olpc_has_dcon(void)
49 {
50  return (olpc_platform_info.flags & OLPC_F_DCON) ? 1 : 0;
51 }
52 
53 /*
54  * The "Mass Production" version of OLPC's XO is identified as being model
55  * C2. During the prototype phase, the following models (in chronological
56  * order) were created: A1, B1, B2, B3, B4, C1. The A1 through B2 models
57  * were based on Geode GX CPUs, and models after that were based upon
58  * Geode LX CPUs. There were also some hand-assembled models floating
59  * around, referred to as PreB1, PreB2, etc.
60  */
61 static inline int olpc_board_at_least(uint32_t rev)
62 {
63  return olpc_platform_info.boardrev >= rev;
64 }
65 
66 extern void olpc_ec_wakeup_set(u16 value);
67 extern void olpc_ec_wakeup_clear(u16 value);
68 extern bool olpc_ec_wakeup_available(void);
69 
70 extern int olpc_ec_mask_write(u16 bits);
71 extern int olpc_ec_sci_query(u16 *sci_value);
72 
73 #else
74 
75 static inline int machine_is_olpc(void)
76 {
77  return 0;
78 }
79 
80 static inline int olpc_has_dcon(void)
81 {
82  return 0;
83 }
84 
85 static inline void olpc_ec_wakeup_set(u16 value) { }
86 static inline void olpc_ec_wakeup_clear(u16 value) { }
87 
88 static inline bool olpc_ec_wakeup_available(void)
89 {
90  return false;
91 }
92 
93 #endif
94 
95 #ifdef CONFIG_OLPC_XO1_PM
96 extern void do_olpc_suspend_lowlevel(void);
97 extern void olpc_xo1_pm_wakeup_set(u16 value);
99 #endif
100 
101 extern int pci_olpc_init(void);
102 
103 /* SCI source values */
104 
105 #define EC_SCI_SRC_EMPTY 0x00
106 #define EC_SCI_SRC_GAME 0x01
107 #define EC_SCI_SRC_BATTERY 0x02
108 #define EC_SCI_SRC_BATSOC 0x04
109 #define EC_SCI_SRC_BATERR 0x08
110 #define EC_SCI_SRC_EBOOK 0x10 /* XO-1 only */
111 #define EC_SCI_SRC_WLAN 0x20 /* XO-1 only */
112 #define EC_SCI_SRC_ACPWR 0x40
113 #define EC_SCI_SRC_BATCRIT 0x80
114 #define EC_SCI_SRC_GPWAKE 0x100 /* XO-1.5 only */
115 #define EC_SCI_SRC_ALL 0x1FF
116 
117 /* GPIO assignments */
118 
119 #define OLPC_GPIO_MIC_AC 1
120 #define OLPC_GPIO_DCON_STAT0 5
121 #define OLPC_GPIO_DCON_STAT1 6
122 #define OLPC_GPIO_DCON_IRQ 7
123 #define OLPC_GPIO_THRM_ALRM geode_gpio(10)
124 #define OLPC_GPIO_DCON_LOAD 11
125 #define OLPC_GPIO_DCON_BLANK 12
126 #define OLPC_GPIO_SMB_CLK 14
127 #define OLPC_GPIO_SMB_DATA 15
128 #define OLPC_GPIO_WORKAUX geode_gpio(24)
129 #define OLPC_GPIO_LID 26
130 #define OLPC_GPIO_ECSCI 27
131 
132 #endif /* _ASM_X86_OLPC_H */