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