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
8struct olpc_platform_t {
9	int flags;
10	uint32_t boardrev;
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
20extern struct olpc_platform_t olpc_platform_info;
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
29static inline uint32_t olpc_board(uint8_t id)
30{
31	return (id << 4) | 0x8;
32}
33
34static inline uint32_t olpc_board_pre(uint8_t id)
35{
36	return id << 4;
37}
38
39static 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 */
48static 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 */
61static inline int olpc_board_at_least(uint32_t rev)
62{
63	return olpc_platform_info.boardrev >= rev;
64}
65
66extern void olpc_ec_wakeup_set(u16 value);
67extern void olpc_ec_wakeup_clear(u16 value);
68extern bool olpc_ec_wakeup_available(void);
69
70extern int olpc_ec_mask_write(u16 bits);
71extern int olpc_ec_sci_query(u16 *sci_value);
72
73#else
74
75static inline int machine_is_olpc(void)
76{
77	return 0;
78}
79
80static inline int olpc_has_dcon(void)
81{
82	return 0;
83}
84
85static inline void olpc_ec_wakeup_set(u16 value) { }
86static inline void olpc_ec_wakeup_clear(u16 value) { }
87
88static inline bool olpc_ec_wakeup_available(void)
89{
90	return false;
91}
92
93#endif
94
95#ifdef CONFIG_OLPC_XO1_PM
96extern void do_olpc_suspend_lowlevel(void);
97extern void olpc_xo1_pm_wakeup_set(u16 value);
98extern void olpc_xo1_pm_wakeup_clear(u16 value);
99#endif
100
101extern 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 */
133