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 
olpc_board(uint8_t id)28 static inline uint32_t olpc_board(uint8_t id)
29 {
30 	return (id << 4) | 0x8;
31 }
32 
olpc_board_pre(uint8_t id)33 static inline uint32_t olpc_board_pre(uint8_t id)
34 {
35 	return id << 4;
36 }
37 
machine_is_olpc(void)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  */
olpc_has_dcon(void)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  */
olpc_board_at_least(uint32_t rev)60 static inline int olpc_board_at_least(uint32_t rev)
61 {
62 	return olpc_platform_info.boardrev >= rev;
63 }
64 
65 #else
66 
machine_is_olpc(void)67 static inline int machine_is_olpc(void)
68 {
69 	return 0;
70 }
71 
olpc_has_dcon(void)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