projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 09d3e1ba SR |
1 | /* |
| 2 | * | |
| 3 | * envctrl.h: Definitions for access to the i2c environment | |
| 4 | * monitoring on Ultrasparc systems. | |
| 5 | * | |
| 6 | * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be) | |
| 7 | * Copyright (C) 2000 Vinh Truong (vinh.truong@eng.sun.com) | |
| 8 | * VT - Add all ioctl commands and environment status definitions | |
| 9 | * VT - Add application note | |
| 10 | */ | |
| 11 | #ifndef _SPARC64_ENVCTRL_H | |
| 12 | #define _SPARC64_ENVCTRL_H 1 | |
| 13 | ||
| 14 | #include <linux/ioctl.h> | |
| 15 | ||
| 16 | /* Application note: | |
| 17 | * | |
| 18 | * The driver supports 4 operations: open(), close(), ioctl(), read() | |
| 19 | * The device name is /dev/envctrl. | |
| 20 | * Below is sample usage: | |
| 21 | * | |
| 22 | * fd = open("/dev/envtrl", O_RDONLY); | |
| 23 | * if (ioctl(fd, ENVCTRL_READ_SHUTDOWN_TEMPERATURE, 0) < 0) | |
| 24 | * printf("error\n"); | |
| 25 | * ret = read(fd, buf, 10); | |
| 26 | * close(fd); | |
| 27 | * | |
| 28 | * Notice in the case of cpu voltage and temperature, the default is | |
| 29 | * cpu0. If we need to know the info of cpu1, cpu2, cpu3, we need to | |
| 30 | * pass in cpu number in ioctl() last parameter. For example, to | |
| 31 | * get the voltage of cpu2: | |
| 32 | * | |
| 33 | * ioctlbuf[0] = 2; | |
| 34 | * if (ioctl(fd, ENVCTRL_READ_CPU_VOLTAGE, ioctlbuf) < 0) | |
| 35 | * printf("error\n"); | |
| 36 | * ret = read(fd, buf, 10); | |
| 37 | * | |
| 38 | * All the return values are in ascii. So check read return value | |
| 39 | * and do appropriate conversions in your application. | |
| 40 | */ | |
| 41 | ||
| 42 | /* IOCTL commands */ | |
| 43 | ||
| 44 | /* Note: these commands reflect possible monitor features. | |
| 45 | * Some boards choose to support some of the features only. | |
| 46 | */ | |
| 47 | #define ENVCTRL_RD_CPU_TEMPERATURE _IOR('p', 0x40, int) | |
| 48 | #define ENVCTRL_RD_CPU_VOLTAGE _IOR('p', 0x41, int) | |
| 49 | #define ENVCTRL_RD_FAN_STATUS _IOR('p', 0x42, int) | |
| 50 | #define ENVCTRL_RD_WARNING_TEMPERATURE _IOR('p', 0x43, int) | |
| 51 | #define ENVCTRL_RD_SHUTDOWN_TEMPERATURE _IOR('p', 0x44, int) | |
| 52 | #define ENVCTRL_RD_VOLTAGE_STATUS _IOR('p', 0x45, int) | |
| 53 | #define ENVCTRL_RD_SCSI_TEMPERATURE _IOR('p', 0x46, int) | |
| 54 | #define ENVCTRL_RD_ETHERNET_TEMPERATURE _IOR('p', 0x47, int) | |
| 55 | #define ENVCTRL_RD_MTHRBD_TEMPERATURE _IOR('p', 0x48, int) | |
| 56 | ||
| 57 | #define ENVCTRL_RD_GLOBALADDRESS _IOR('p', 0x49, int) | |
| 58 | ||
| 59 | /* Read return values for a voltage status request. */ | |
| 60 | #define ENVCTRL_VOLTAGE_POWERSUPPLY_GOOD 0x01 | |
| 61 | #define ENVCTRL_VOLTAGE_BAD 0x02 | |
| 62 | #define ENVCTRL_POWERSUPPLY_BAD 0x03 | |
| 63 | #define ENVCTRL_VOLTAGE_POWERSUPPLY_BAD 0x04 | |
| 64 | ||
| 65 | /* Read return values for a fan status request. | |
| 66 | * A failure match means either the fan fails or | |
| 67 | * the fan is not connected. Some boards have optional | |
| 68 | * connectors to connect extra fans. | |
| 69 | * | |
| 70 | * There are maximum 8 monitor fans. Some are cpu fans | |
| 71 | * some are system fans. The mask below only indicates | |
| 72 | * fan by order number. | |
| 73 | * Below is a sample application: | |
| 74 | * | |
| 75 | * if (ioctl(fd, ENVCTRL_READ_FAN_STATUS, 0) < 0) { | |
| 76 | * printf("ioctl fan failed\n"); | |
| 77 | * } | |
| 78 | * if (read(fd, rslt, 1) <= 0) { | |
| 79 | * printf("error or fan not monitored\n"); | |
| 80 | * } else { | |
| 81 | * if (rslt[0] == ENVCTRL_ALL_FANS_GOOD) { | |
| 82 | * printf("all fans good\n"); | |
| 83 | * } else if (rslt[0] == ENVCTRL_ALL_FANS_BAD) { | |
| 84 | * printf("all fans bad\n"); | |
| 85 | * } else { | |
| 86 | * if (rslt[0] & ENVCTRL_FAN0_FAILURE_MASK) { | |
| 87 | * printf("fan 0 failed or not connected\n"); | |
| 88 | * } | |
| 89 | * ...... | |
| 90 | */ | |
| 91 | ||
| 92 | #define ENVCTRL_ALL_FANS_GOOD 0x00 | |
| 93 | #define ENVCTRL_FAN0_FAILURE_MASK 0x01 | |
| 94 | #define ENVCTRL_FAN1_FAILURE_MASK 0x02 | |
| 95 | #define ENVCTRL_FAN2_FAILURE_MASK 0x04 | |
| 96 | #define ENVCTRL_FAN3_FAILURE_MASK 0x08 | |
| 97 | #define ENVCTRL_FAN4_FAILURE_MASK 0x10 | |
| 98 | #define ENVCTRL_FAN5_FAILURE_MASK 0x20 | |
| 99 | #define ENVCTRL_FAN6_FAILURE_MASK 0x40 | |
| 100 | #define ENVCTRL_FAN7_FAILURE_MASK 0x80 | |
| 101 | #define ENVCTRL_ALL_FANS_BAD 0xFF | |
| 102 | ||
| 103 | #endif /* !(_SPARC64_ENVCTRL_H) */ |