11a59d1b8SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-or-later 2e86435ebSPeter Feuerer /* 3e86435ebSPeter Feuerer * acerhdf - A driver which monitors the temperature 4e86435ebSPeter Feuerer * of the aspire one netbook, turns on/off the fan 5e86435ebSPeter Feuerer * as soon as the upper/lower threshold is reached. 6e86435ebSPeter Feuerer * 7d3f5b736SPeter Kaestle * (C) 2009 - Peter Kaestle peter (a) piie.net 8e86435ebSPeter Feuerer * http://piie.net 94e791c98SBorislav Petkov * 2009 Borislav Petkov bp (a) alien8.de 10e86435ebSPeter Feuerer * 11e86435ebSPeter Feuerer * Inspired by and many thanks to: 12e86435ebSPeter Feuerer * o acerfand - Rachel Greenham 13e86435ebSPeter Feuerer * o acer_ec.pl - Michael Kurz michi.kurz (at) googlemail.com 14e86435ebSPeter Feuerer * - Petr Tomasek tomasek (#) etf,cuni,cz 15e86435ebSPeter Feuerer * - Carlos Corbacho cathectic (at) gmail.com 16e86435ebSPeter Feuerer * o lkml - Matthew Garrett 17e86435ebSPeter Feuerer * - Borislav Petkov 18e86435ebSPeter Feuerer * - Andreas Mohr 19e86435ebSPeter Feuerer */ 20e86435ebSPeter Feuerer 21e86435ebSPeter Feuerer #define pr_fmt(fmt) "acerhdf: " fmt 22e86435ebSPeter Feuerer 23e86435ebSPeter Feuerer #include <linux/kernel.h> 24e86435ebSPeter Feuerer #include <linux/module.h> 25e86435ebSPeter Feuerer #include <linux/dmi.h> 26c4bae98cSJean Delvare #include <linux/acpi.h> 27e86435ebSPeter Feuerer #include <linux/thermal.h> 28e86435ebSPeter Feuerer #include <linux/platform_device.h> 29e86435ebSPeter Feuerer 30e86435ebSPeter Feuerer /* 31e86435ebSPeter Feuerer * The driver is started with "kernel mode off" by default. That means, the BIOS 32e86435ebSPeter Feuerer * is still in control of the fan. In this mode the driver allows to read the 33e86435ebSPeter Feuerer * temperature of the cpu and a userspace tool may take over control of the fan. 34e86435ebSPeter Feuerer * If the driver is switched to "kernel mode" (e.g. via module parameter) the 35e86435ebSPeter Feuerer * driver is in full control of the fan. If you want the module to be started in 36e86435ebSPeter Feuerer * kernel mode by default, define the following: 37e86435ebSPeter Feuerer */ 38e86435ebSPeter Feuerer #undef START_IN_KERNEL_MODE 39e86435ebSPeter Feuerer 4048c8dd64SPeter Feuerer #define DRV_VER "0.7.0" 41e86435ebSPeter Feuerer 42e86435ebSPeter Feuerer /* 43e86435ebSPeter Feuerer * According to the Atom N270 datasheet, 44e86435ebSPeter Feuerer * (http://download.intel.com/design/processor/datashts/320032.pdf) the 45e86435ebSPeter Feuerer * CPU's optimal operating limits denoted in junction temperature as 46e86435ebSPeter Feuerer * measured by the on-die thermal monitor are within 0 <= Tj <= 90. So, 47e86435ebSPeter Feuerer * assume 89°C is critical temperature. 48e86435ebSPeter Feuerer */ 4970052917SPeter Feuerer #define ACERHDF_TEMP_CRIT 89000 50e86435ebSPeter Feuerer #define ACERHDF_FAN_OFF 0 51e86435ebSPeter Feuerer #define ACERHDF_FAN_AUTO 1 52e86435ebSPeter Feuerer 53e86435ebSPeter Feuerer /* 54e86435ebSPeter Feuerer * No matter what value the user puts into the fanon variable, turn on the fan 55e86435ebSPeter Feuerer * at 80 degree Celsius to prevent hardware damage 56e86435ebSPeter Feuerer */ 5770052917SPeter Feuerer #define ACERHDF_MAX_FANON 80000 58e86435ebSPeter Feuerer 59e86435ebSPeter Feuerer /* 60e86435ebSPeter Feuerer * Maximum interval between two temperature checks is 15 seconds, as the die 61e86435ebSPeter Feuerer * can get hot really fast under heavy load (plus we shouldn't forget about 62e86435ebSPeter Feuerer * possible impact of _external_ aggressive sources such as heaters, sun etc.) 63e86435ebSPeter Feuerer */ 64e86435ebSPeter Feuerer #define ACERHDF_MAX_INTERVAL 15 65e86435ebSPeter Feuerer 66e86435ebSPeter Feuerer #ifdef START_IN_KERNEL_MODE 67e86435ebSPeter Feuerer static int kernelmode = 1; 68e86435ebSPeter Feuerer #else 69e86435ebSPeter Feuerer static int kernelmode; 70e86435ebSPeter Feuerer #endif 71e86435ebSPeter Feuerer 72e86435ebSPeter Feuerer static unsigned int interval = 10; 73351963bbSPeter Feuerer static unsigned int fanon = 60000; 74351963bbSPeter Feuerer static unsigned int fanoff = 53000; 75e86435ebSPeter Feuerer static unsigned int verbose; 76291bd0e4SPaul Gortmaker static unsigned int list_supported; 77e86435ebSPeter Feuerer static unsigned int fanstate = ACERHDF_FAN_AUTO; 78e86435ebSPeter Feuerer static char force_bios[16]; 79ded0cdfcSPeter Feuerer static char force_product[16]; 80e86435ebSPeter Feuerer static unsigned int prev_interval; 81fedae5adSAxel Lin static struct thermal_zone_device *thz_dev; 82fedae5adSAxel Lin static struct thermal_cooling_device *cl_dev; 83fedae5adSAxel Lin static struct platform_device *acerhdf_dev; 84e86435ebSPeter Feuerer 85e86435ebSPeter Feuerer module_param(kernelmode, uint, 0); 86e86435ebSPeter Feuerer MODULE_PARM_DESC(kernelmode, "Kernel mode fan control on / off"); 87e86435ebSPeter Feuerer module_param(interval, uint, 0600); 88e86435ebSPeter Feuerer MODULE_PARM_DESC(interval, "Polling interval of temperature check"); 89e86435ebSPeter Feuerer module_param(fanon, uint, 0600); 90e86435ebSPeter Feuerer MODULE_PARM_DESC(fanon, "Turn the fan on above this temperature"); 91e86435ebSPeter Feuerer module_param(fanoff, uint, 0600); 92e86435ebSPeter Feuerer MODULE_PARM_DESC(fanoff, "Turn the fan off below this temperature"); 93e86435ebSPeter Feuerer module_param(verbose, uint, 0600); 94e86435ebSPeter Feuerer MODULE_PARM_DESC(verbose, "Enable verbose dmesg output"); 95291bd0e4SPaul Gortmaker module_param(list_supported, uint, 0600); 96291bd0e4SPaul Gortmaker MODULE_PARM_DESC(list_supported, "List supported models and BIOS versions"); 97e86435ebSPeter Feuerer module_param_string(force_bios, force_bios, 16, 0); 983836b816SPaul Gortmaker MODULE_PARM_DESC(force_bios, "Pretend system has this known supported BIOS version"); 99ded0cdfcSPeter Feuerer module_param_string(force_product, force_product, 16, 0); 1003836b816SPaul Gortmaker MODULE_PARM_DESC(force_product, "Pretend system is this known supported model"); 101ded0cdfcSPeter Feuerer 102ded0cdfcSPeter Feuerer /* 103210183d4SPeter Feuerer * cmd_off: to switch the fan completely off and check if the fan is off 104ded0cdfcSPeter Feuerer * cmd_auto: to set the BIOS in control of the fan. The BIOS regulates then 105ded0cdfcSPeter Feuerer * the fan speed depending on the temperature 106ded0cdfcSPeter Feuerer */ 107ded0cdfcSPeter Feuerer struct fancmd { 108ded0cdfcSPeter Feuerer u8 cmd_off; 109ded0cdfcSPeter Feuerer u8 cmd_auto; 110ded0cdfcSPeter Feuerer }; 111e86435ebSPeter Feuerer 1125ef6578cSPeter Feuerer struct manualcmd { 1135ef6578cSPeter Feuerer u8 mreg; 1145ef6578cSPeter Feuerer u8 moff; 1155ef6578cSPeter Feuerer }; 1165ef6578cSPeter Feuerer 1175ef6578cSPeter Feuerer /* default register and command to disable fan in manual mode */ 1185ef6578cSPeter Feuerer static const struct manualcmd mcmd = { 1195ef6578cSPeter Feuerer .mreg = 0x94, 1205ef6578cSPeter Feuerer .moff = 0xff, 1215ef6578cSPeter Feuerer }; 1225ef6578cSPeter Feuerer 123f7eaf3fbSPaul Gortmaker /* BIOS settings - only used during probe */ 124f587f07fSPeter Feuerer struct bios_settings { 125e86435ebSPeter Feuerer const char *vendor; 126ded0cdfcSPeter Feuerer const char *product; 127e86435ebSPeter Feuerer const char *version; 128f587f07fSPeter Feuerer u8 fanreg; 129f587f07fSPeter Feuerer u8 tempreg; 130ded0cdfcSPeter Feuerer struct fancmd cmd; 1315ef6578cSPeter Feuerer int mcmd_enable; 132e86435ebSPeter Feuerer }; 133e86435ebSPeter Feuerer 134f7eaf3fbSPaul Gortmaker /* This could be a daughter struct in the above, but not worth the redirect */ 135f7eaf3fbSPaul Gortmaker struct ctrl_settings { 136f7eaf3fbSPaul Gortmaker u8 fanreg; 137f7eaf3fbSPaul Gortmaker u8 tempreg; 138f7eaf3fbSPaul Gortmaker struct fancmd cmd; 139f7eaf3fbSPaul Gortmaker int mcmd_enable; 140f7eaf3fbSPaul Gortmaker }; 141f7eaf3fbSPaul Gortmaker 142f7eaf3fbSPaul Gortmaker static struct ctrl_settings ctrl_cfg __read_mostly; 143f7eaf3fbSPaul Gortmaker 144e86435ebSPeter Feuerer /* Register addresses and values for different BIOS versions */ 145f7eaf3fbSPaul Gortmaker static const struct bios_settings bios_tbl[] __initconst = { 146ded0cdfcSPeter Feuerer /* AOA110 */ 1475ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3109", 0x55, 0x58, {0x1f, 0x00}, 0}, 1485ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3114", 0x55, 0x58, {0x1f, 0x00}, 0}, 1495ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3301", 0x55, 0x58, {0xaf, 0x00}, 0}, 1505ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3304", 0x55, 0x58, {0xaf, 0x00}, 0}, 1515ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3305", 0x55, 0x58, {0xaf, 0x00}, 0}, 1525ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3307", 0x55, 0x58, {0xaf, 0x00}, 0}, 1535ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3308", 0x55, 0x58, {0x21, 0x00}, 0}, 1545ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3309", 0x55, 0x58, {0x21, 0x00}, 0}, 1555ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3310", 0x55, 0x58, {0x21, 0x00}, 0}, 156ded0cdfcSPeter Feuerer /* AOA150 */ 1575ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3114", 0x55, 0x58, {0x1f, 0x00}, 0}, 1585ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3301", 0x55, 0x58, {0x20, 0x00}, 0}, 1595ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3304", 0x55, 0x58, {0x20, 0x00}, 0}, 1605ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3305", 0x55, 0x58, {0x20, 0x00}, 0}, 1615ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3307", 0x55, 0x58, {0x20, 0x00}, 0}, 1625ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3308", 0x55, 0x58, {0x20, 0x00}, 0}, 1635ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3309", 0x55, 0x58, {0x20, 0x00}, 0}, 1645ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3310", 0x55, 0x58, {0x20, 0x00}, 0}, 16543ae1e32SPeter Feuerer /* LT1005u */ 1665ef6578cSPeter Feuerer {"Acer", "LT-10Q", "v0.3310", 0x55, 0x58, {0x20, 0x00}, 0}, 16736065746SPeter Feuerer /* Acer 1410 */ 1685ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v0.3108", 0x55, 0x58, {0x9e, 0x00}, 0}, 1695ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v0.3113", 0x55, 0x58, {0x9e, 0x00}, 0}, 1705ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v0.3115", 0x55, 0x58, {0x9e, 0x00}, 0}, 1715ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v0.3117", 0x55, 0x58, {0x9e, 0x00}, 0}, 1725ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v0.3119", 0x55, 0x58, {0x9e, 0x00}, 0}, 1735ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v0.3120", 0x55, 0x58, {0x9e, 0x00}, 0}, 1745ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v1.3204", 0x55, 0x58, {0x9e, 0x00}, 0}, 1755ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v1.3303", 0x55, 0x58, {0x9e, 0x00}, 0}, 1765ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v1.3308", 0x55, 0x58, {0x9e, 0x00}, 0}, 1775ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v1.3310", 0x55, 0x58, {0x9e, 0x00}, 0}, 1785ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v1.3314", 0x55, 0x58, {0x9e, 0x00}, 0}, 17994219d79SPeter Feuerer /* Acer 1810xx */ 1805ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v0.3108", 0x55, 0x58, {0x9e, 0x00}, 0}, 1815ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v0.3108", 0x55, 0x58, {0x9e, 0x00}, 0}, 1825ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v0.3113", 0x55, 0x58, {0x9e, 0x00}, 0}, 1835ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v0.3113", 0x55, 0x58, {0x9e, 0x00}, 0}, 1845ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v0.3115", 0x55, 0x58, {0x9e, 0x00}, 0}, 1855ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v0.3115", 0x55, 0x58, {0x9e, 0x00}, 0}, 1865ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v0.3117", 0x55, 0x58, {0x9e, 0x00}, 0}, 1875ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v0.3117", 0x55, 0x58, {0x9e, 0x00}, 0}, 1885ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v0.3119", 0x55, 0x58, {0x9e, 0x00}, 0}, 1895ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v0.3119", 0x55, 0x58, {0x9e, 0x00}, 0}, 1905ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v0.3120", 0x55, 0x58, {0x9e, 0x00}, 0}, 1915ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v0.3120", 0x55, 0x58, {0x9e, 0x00}, 0}, 1925ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v1.3204", 0x55, 0x58, {0x9e, 0x00}, 0}, 1935ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v1.3204", 0x55, 0x58, {0x9e, 0x00}, 0}, 1945ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v1.3303", 0x55, 0x58, {0x9e, 0x00}, 0}, 1955ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v1.3303", 0x55, 0x58, {0x9e, 0x00}, 0}, 1965ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v1.3308", 0x55, 0x58, {0x9e, 0x00}, 0}, 1975ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v1.3308", 0x55, 0x58, {0x9e, 0x00}, 0}, 1985ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v1.3310", 0x55, 0x58, {0x9e, 0x00}, 0}, 1995ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v1.3310", 0x55, 0x58, {0x9e, 0x00}, 0}, 2005ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v1.3314", 0x55, 0x58, {0x9e, 0x00}, 0}, 2015ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v1.3314", 0x55, 0x58, {0x9e, 0x00}, 0}, 2027438d990SPeter Feuerer /* Acer 5755G */ 2037438d990SPeter Feuerer {"Acer", "Aspire 5755G", "V1.20", 0xab, 0xb4, {0x00, 0x08}, 0}, 2047438d990SPeter Feuerer {"Acer", "Aspire 5755G", "V1.21", 0xab, 0xb3, {0x00, 0x08}, 0}, 2057438d990SPeter Feuerer /* Acer 521 */ 2067438d990SPeter Feuerer {"Acer", "AO521", "V1.11", 0x55, 0x58, {0x1f, 0x00}, 0}, 20724964639SPeter Feuerer /* Acer 531 */ 2085ef6578cSPeter Feuerer {"Acer", "AO531h", "v0.3104", 0x55, 0x58, {0x20, 0x00}, 0}, 2095ef6578cSPeter Feuerer {"Acer", "AO531h", "v0.3201", 0x55, 0x58, {0x20, 0x00}, 0}, 2105ef6578cSPeter Feuerer {"Acer", "AO531h", "v0.3304", 0x55, 0x58, {0x20, 0x00}, 0}, 21143ae1e32SPeter Feuerer /* Acer 751 */ 2127438d990SPeter Feuerer {"Acer", "AO751h", "V0.3206", 0x55, 0x58, {0x21, 0x00}, 0}, 2135ef6578cSPeter Feuerer {"Acer", "AO751h", "V0.3212", 0x55, 0x58, {0x21, 0x00}, 0}, 2147438d990SPeter Feuerer /* Acer 753 */ 2157438d990SPeter Feuerer {"Acer", "Aspire One 753", "V1.24", 0x93, 0xac, {0x14, 0x04}, 1}, 21643ae1e32SPeter Feuerer /* Acer 1825 */ 2175ef6578cSPeter Feuerer {"Acer", "Aspire 1825PTZ", "V1.3118", 0x55, 0x58, {0x9e, 0x00}, 0}, 2185ef6578cSPeter Feuerer {"Acer", "Aspire 1825PTZ", "V1.3127", 0x55, 0x58, {0x9e, 0x00}, 0}, 2197438d990SPeter Feuerer /* Acer Extensa 5420 */ 2207438d990SPeter Feuerer {"Acer", "Extensa 5420", "V1.17", 0x93, 0xac, {0x14, 0x04}, 1}, 2217438d990SPeter Feuerer /* Acer Aspire 5315 */ 2227438d990SPeter Feuerer {"Acer", "Aspire 5315", "V1.19", 0x93, 0xac, {0x14, 0x04}, 1}, 2237438d990SPeter Feuerer /* Acer Aspire 5739 */ 2247438d990SPeter Feuerer {"Acer", "Aspire 5739G", "V1.3311", 0x55, 0x58, {0x20, 0x00}, 0}, 22543ae1e32SPeter Feuerer /* Acer TravelMate 7730 */ 2265ef6578cSPeter Feuerer {"Acer", "TravelMate 7730G", "v0.3509", 0x55, 0x58, {0xaf, 0x00}, 0}, 22726e5656eSPeter Feuerer /* Acer Aspire 7551 */ 22826e5656eSPeter Feuerer {"Acer", "Aspire 7551", "V1.18", 0x93, 0xa8, {0x14, 0x04}, 1}, 2297438d990SPeter Feuerer /* Acer TravelMate TM8573T */ 2307438d990SPeter Feuerer {"Acer", "TM8573T", "V1.13", 0x93, 0xa8, {0x14, 0x04}, 1}, 23194219d79SPeter Feuerer /* Gateway */ 2325ef6578cSPeter Feuerer {"Gateway", "AOA110", "v0.3103", 0x55, 0x58, {0x21, 0x00}, 0}, 2335ef6578cSPeter Feuerer {"Gateway", "AOA150", "v0.3103", 0x55, 0x58, {0x20, 0x00}, 0}, 2345ef6578cSPeter Feuerer {"Gateway", "LT31", "v1.3103", 0x55, 0x58, {0x9e, 0x00}, 0}, 2355ef6578cSPeter Feuerer {"Gateway", "LT31", "v1.3201", 0x55, 0x58, {0x9e, 0x00}, 0}, 2365ef6578cSPeter Feuerer {"Gateway", "LT31", "v1.3302", 0x55, 0x58, {0x9e, 0x00}, 0}, 2375ef6578cSPeter Feuerer {"Gateway", "LT31", "v1.3303t", 0x55, 0x58, {0x9e, 0x00}, 0}, 238684238d7SPaul Gortmaker {"Gateway", "LT31", "v1.3307", 0x55, 0x58, {0x9e, 0x00}, 0}, 23994219d79SPeter Feuerer /* Packard Bell */ 2405ef6578cSPeter Feuerer {"Packard Bell", "DOA150", "v0.3104", 0x55, 0x58, {0x21, 0x00}, 0}, 2415ef6578cSPeter Feuerer {"Packard Bell", "DOA150", "v0.3105", 0x55, 0x58, {0x20, 0x00}, 0}, 2425ef6578cSPeter Feuerer {"Packard Bell", "AOA110", "v0.3105", 0x55, 0x58, {0x21, 0x00}, 0}, 2435ef6578cSPeter Feuerer {"Packard Bell", "AOA150", "v0.3105", 0x55, 0x58, {0x20, 0x00}, 0}, 2445ef6578cSPeter Feuerer {"Packard Bell", "ENBFT", "V1.3118", 0x55, 0x58, {0x9e, 0x00}, 0}, 2455ef6578cSPeter Feuerer {"Packard Bell", "ENBFT", "V1.3127", 0x55, 0x58, {0x9e, 0x00}, 0}, 2465ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v1.3303", 0x55, 0x58, {0x9e, 0x00}, 0}, 2475ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v0.3120", 0x55, 0x58, {0x9e, 0x00}, 0}, 2485ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v0.3108", 0x55, 0x58, {0x9e, 0x00}, 0}, 2495ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v0.3113", 0x55, 0x58, {0x9e, 0x00}, 0}, 2505ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v0.3115", 0x55, 0x58, {0x9e, 0x00}, 0}, 2515ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v0.3117", 0x55, 0x58, {0x9e, 0x00}, 0}, 2525ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v0.3119", 0x55, 0x58, {0x9e, 0x00}, 0}, 2535ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v1.3204", 0x55, 0x58, {0x9e, 0x00}, 0}, 2545ef6578cSPeter Feuerer {"Packard Bell", "DOTMA", "v1.3201", 0x55, 0x58, {0x9e, 0x00}, 0}, 2555ef6578cSPeter Feuerer {"Packard Bell", "DOTMA", "v1.3302", 0x55, 0x58, {0x9e, 0x00}, 0}, 2565ef6578cSPeter Feuerer {"Packard Bell", "DOTMA", "v1.3303t", 0x55, 0x58, {0x9e, 0x00}, 0}, 2575ef6578cSPeter Feuerer {"Packard Bell", "DOTVR46", "v1.3308", 0x55, 0x58, {0x9e, 0x00}, 0}, 258ded0cdfcSPeter Feuerer /* pewpew-terminator */ 2595ef6578cSPeter Feuerer {"", "", "", 0, 0, {0, 0}, 0} 260e86435ebSPeter Feuerer }; 261e86435ebSPeter Feuerer 26248c8dd64SPeter Feuerer /* 26348c8dd64SPeter Feuerer * this struct is used to instruct thermal layer to use bang_bang instead of 26448c8dd64SPeter Feuerer * default governor for acerhdf 26548c8dd64SPeter Feuerer */ 26648c8dd64SPeter Feuerer static struct thermal_zone_params acerhdf_zone_params = { 26748c8dd64SPeter Feuerer .governor_name = "bang_bang", 26848c8dd64SPeter Feuerer }; 269e86435ebSPeter Feuerer 270e86435ebSPeter Feuerer static int acerhdf_get_temp(int *temp) 271e86435ebSPeter Feuerer { 272e86435ebSPeter Feuerer u8 read_temp; 273e86435ebSPeter Feuerer 274f7eaf3fbSPaul Gortmaker if (ec_read(ctrl_cfg.tempreg, &read_temp)) 275e86435ebSPeter Feuerer return -EINVAL; 276e86435ebSPeter Feuerer 27770052917SPeter Feuerer *temp = read_temp * 1000; 278e86435ebSPeter Feuerer 279e86435ebSPeter Feuerer return 0; 280e86435ebSPeter Feuerer } 281e86435ebSPeter Feuerer 282e86435ebSPeter Feuerer static int acerhdf_get_fanstate(int *state) 283e86435ebSPeter Feuerer { 284e86435ebSPeter Feuerer u8 fan; 285e86435ebSPeter Feuerer 286f7eaf3fbSPaul Gortmaker if (ec_read(ctrl_cfg.fanreg, &fan)) 287e86435ebSPeter Feuerer return -EINVAL; 288e86435ebSPeter Feuerer 289f7eaf3fbSPaul Gortmaker if (fan != ctrl_cfg.cmd.cmd_off) 290ded0cdfcSPeter Feuerer *state = ACERHDF_FAN_AUTO; 291ded0cdfcSPeter Feuerer else 292ded0cdfcSPeter Feuerer *state = ACERHDF_FAN_OFF; 293e86435ebSPeter Feuerer 294e86435ebSPeter Feuerer return 0; 295e86435ebSPeter Feuerer } 296e86435ebSPeter Feuerer 297e86435ebSPeter Feuerer static void acerhdf_change_fanstate(int state) 298e86435ebSPeter Feuerer { 299e86435ebSPeter Feuerer unsigned char cmd; 300e86435ebSPeter Feuerer 301e86435ebSPeter Feuerer if (verbose) 302eecc5bbcSJoe Perches pr_notice("fan %s\n", state == ACERHDF_FAN_OFF ? "OFF" : "ON"); 303e86435ebSPeter Feuerer 304e86435ebSPeter Feuerer if ((state != ACERHDF_FAN_OFF) && (state != ACERHDF_FAN_AUTO)) { 305e86435ebSPeter Feuerer pr_err("invalid fan state %d requested, setting to auto!\n", 306e86435ebSPeter Feuerer state); 307e86435ebSPeter Feuerer state = ACERHDF_FAN_AUTO; 308e86435ebSPeter Feuerer } 309e86435ebSPeter Feuerer 310f7eaf3fbSPaul Gortmaker cmd = (state == ACERHDF_FAN_OFF) ? ctrl_cfg.cmd.cmd_off 311f7eaf3fbSPaul Gortmaker : ctrl_cfg.cmd.cmd_auto; 312e86435ebSPeter Feuerer fanstate = state; 313e86435ebSPeter Feuerer 314f7eaf3fbSPaul Gortmaker ec_write(ctrl_cfg.fanreg, cmd); 3155ef6578cSPeter Feuerer 316f7eaf3fbSPaul Gortmaker if (ctrl_cfg.mcmd_enable && state == ACERHDF_FAN_OFF) { 3175ef6578cSPeter Feuerer if (verbose) 3185ef6578cSPeter Feuerer pr_notice("turning off fan manually\n"); 3195ef6578cSPeter Feuerer ec_write(mcmd.mreg, mcmd.moff); 3205ef6578cSPeter Feuerer } 321e86435ebSPeter Feuerer } 322e86435ebSPeter Feuerer 323e86435ebSPeter Feuerer static void acerhdf_check_param(struct thermal_zone_device *thermal) 324e86435ebSPeter Feuerer { 325e86435ebSPeter Feuerer if (fanon > ACERHDF_MAX_FANON) { 326e86435ebSPeter Feuerer pr_err("fanon temperature too high, set to %d\n", 327e86435ebSPeter Feuerer ACERHDF_MAX_FANON); 328e86435ebSPeter Feuerer fanon = ACERHDF_MAX_FANON; 329e86435ebSPeter Feuerer } 330e86435ebSPeter Feuerer 331e86435ebSPeter Feuerer if (kernelmode && prev_interval != interval) { 332e86435ebSPeter Feuerer if (interval > ACERHDF_MAX_INTERVAL) { 333e86435ebSPeter Feuerer pr_err("interval too high, set to %d\n", 334e86435ebSPeter Feuerer ACERHDF_MAX_INTERVAL); 335e86435ebSPeter Feuerer interval = ACERHDF_MAX_INTERVAL; 336e86435ebSPeter Feuerer } 337e86435ebSPeter Feuerer if (verbose) 338eecc5bbcSJoe Perches pr_notice("interval changed to: %d\n", interval); 339e86435ebSPeter Feuerer thermal->polling_delay = interval*1000; 340e86435ebSPeter Feuerer prev_interval = interval; 341e86435ebSPeter Feuerer } 342e86435ebSPeter Feuerer } 343e86435ebSPeter Feuerer 344e86435ebSPeter Feuerer /* 345e86435ebSPeter Feuerer * This is the thermal zone callback which does the delayed polling of the fan 346e86435ebSPeter Feuerer * state. We do check /sysfs-originating settings here in acerhdf_check_param() 347e86435ebSPeter Feuerer * as late as the polling interval is since we can't do that in the respective 348e86435ebSPeter Feuerer * accessors of the module parameters. 349e86435ebSPeter Feuerer */ 35017e8351aSSascha Hauer static int acerhdf_get_ec_temp(struct thermal_zone_device *thermal, int *t) 351e86435ebSPeter Feuerer { 352e86435ebSPeter Feuerer int temp, err = 0; 353e86435ebSPeter Feuerer 354e86435ebSPeter Feuerer acerhdf_check_param(thermal); 355e86435ebSPeter Feuerer 356e86435ebSPeter Feuerer err = acerhdf_get_temp(&temp); 357e86435ebSPeter Feuerer if (err) 358e86435ebSPeter Feuerer return err; 359e86435ebSPeter Feuerer 360e86435ebSPeter Feuerer if (verbose) 361e86435ebSPeter Feuerer pr_notice("temp %d\n", temp); 362e86435ebSPeter Feuerer 363e86435ebSPeter Feuerer *t = temp; 364e86435ebSPeter Feuerer return 0; 365e86435ebSPeter Feuerer } 366e86435ebSPeter Feuerer 367e86435ebSPeter Feuerer static int acerhdf_bind(struct thermal_zone_device *thermal, 368e86435ebSPeter Feuerer struct thermal_cooling_device *cdev) 369e86435ebSPeter Feuerer { 370e86435ebSPeter Feuerer /* if the cooling device is the one from acerhdf bind it */ 371e86435ebSPeter Feuerer if (cdev != cl_dev) 372e86435ebSPeter Feuerer return 0; 373e86435ebSPeter Feuerer 3749d99842fSZhang Rui if (thermal_zone_bind_cooling_device(thermal, 0, cdev, 3756cd9e9f6SKapileshwar Singh THERMAL_NO_LIMIT, THERMAL_NO_LIMIT, 3766cd9e9f6SKapileshwar Singh THERMAL_WEIGHT_DEFAULT)) { 377e86435ebSPeter Feuerer pr_err("error binding cooling dev\n"); 378e86435ebSPeter Feuerer return -EINVAL; 379e86435ebSPeter Feuerer } 380e86435ebSPeter Feuerer return 0; 381e86435ebSPeter Feuerer } 382e86435ebSPeter Feuerer 383e86435ebSPeter Feuerer static int acerhdf_unbind(struct thermal_zone_device *thermal, 384e86435ebSPeter Feuerer struct thermal_cooling_device *cdev) 385e86435ebSPeter Feuerer { 386e86435ebSPeter Feuerer if (cdev != cl_dev) 387e86435ebSPeter Feuerer return 0; 388e86435ebSPeter Feuerer 389e86435ebSPeter Feuerer if (thermal_zone_unbind_cooling_device(thermal, 0, cdev)) { 390e86435ebSPeter Feuerer pr_err("error unbinding cooling dev\n"); 391e86435ebSPeter Feuerer return -EINVAL; 392e86435ebSPeter Feuerer } 393e86435ebSPeter Feuerer return 0; 394e86435ebSPeter Feuerer } 395e86435ebSPeter Feuerer 396e86435ebSPeter Feuerer static inline void acerhdf_revert_to_bios_mode(void) 397e86435ebSPeter Feuerer { 398e86435ebSPeter Feuerer acerhdf_change_fanstate(ACERHDF_FAN_AUTO); 399e86435ebSPeter Feuerer kernelmode = 0; 400e86435ebSPeter Feuerer if (thz_dev) 401e86435ebSPeter Feuerer thz_dev->polling_delay = 0; 402e86435ebSPeter Feuerer pr_notice("kernel mode fan control OFF\n"); 403e86435ebSPeter Feuerer } 404e86435ebSPeter Feuerer static inline void acerhdf_enable_kernelmode(void) 405e86435ebSPeter Feuerer { 406e86435ebSPeter Feuerer kernelmode = 1; 407e86435ebSPeter Feuerer 408e86435ebSPeter Feuerer thz_dev->polling_delay = interval*1000; 4090e70f466SSrinivas Pandruvada thermal_zone_device_update(thz_dev, THERMAL_EVENT_UNSPECIFIED); 410e86435ebSPeter Feuerer pr_notice("kernel mode fan control ON\n"); 411e86435ebSPeter Feuerer } 412e86435ebSPeter Feuerer 413e86435ebSPeter Feuerer static int acerhdf_get_mode(struct thermal_zone_device *thermal, 414e86435ebSPeter Feuerer enum thermal_device_mode *mode) 415e86435ebSPeter Feuerer { 416e86435ebSPeter Feuerer if (verbose) 417e86435ebSPeter Feuerer pr_notice("kernel mode fan control %d\n", kernelmode); 418e86435ebSPeter Feuerer 419e86435ebSPeter Feuerer *mode = (kernelmode) ? THERMAL_DEVICE_ENABLED 420e86435ebSPeter Feuerer : THERMAL_DEVICE_DISABLED; 421e86435ebSPeter Feuerer 422e86435ebSPeter Feuerer return 0; 423e86435ebSPeter Feuerer } 424e86435ebSPeter Feuerer 425e86435ebSPeter Feuerer /* 426e86435ebSPeter Feuerer * set operation mode; 427e86435ebSPeter Feuerer * enabled: the thermal layer of the kernel takes care about 428e86435ebSPeter Feuerer * the temperature and the fan. 429e86435ebSPeter Feuerer * disabled: the BIOS takes control of the fan. 430e86435ebSPeter Feuerer */ 431e86435ebSPeter Feuerer static int acerhdf_set_mode(struct thermal_zone_device *thermal, 432e86435ebSPeter Feuerer enum thermal_device_mode mode) 433e86435ebSPeter Feuerer { 434e86435ebSPeter Feuerer if (mode == THERMAL_DEVICE_DISABLED && kernelmode) 435e86435ebSPeter Feuerer acerhdf_revert_to_bios_mode(); 436e86435ebSPeter Feuerer else if (mode == THERMAL_DEVICE_ENABLED && !kernelmode) 437e86435ebSPeter Feuerer acerhdf_enable_kernelmode(); 438e86435ebSPeter Feuerer 439e86435ebSPeter Feuerer return 0; 440e86435ebSPeter Feuerer } 441e86435ebSPeter Feuerer 442e86435ebSPeter Feuerer static int acerhdf_get_trip_type(struct thermal_zone_device *thermal, int trip, 443e86435ebSPeter Feuerer enum thermal_trip_type *type) 444e86435ebSPeter Feuerer { 445e86435ebSPeter Feuerer if (trip == 0) 446e86435ebSPeter Feuerer *type = THERMAL_TRIP_ACTIVE; 4477e8b6d73SPeter Feuerer else if (trip == 1) 4487e8b6d73SPeter Feuerer *type = THERMAL_TRIP_CRITICAL; 4497e8b6d73SPeter Feuerer else 4507e8b6d73SPeter Feuerer return -EINVAL; 451e86435ebSPeter Feuerer 452e86435ebSPeter Feuerer return 0; 453e86435ebSPeter Feuerer } 454e86435ebSPeter Feuerer 45548c8dd64SPeter Feuerer static int acerhdf_get_trip_hyst(struct thermal_zone_device *thermal, int trip, 45617e8351aSSascha Hauer int *temp) 45748c8dd64SPeter Feuerer { 45848c8dd64SPeter Feuerer if (trip != 0) 45948c8dd64SPeter Feuerer return -EINVAL; 46048c8dd64SPeter Feuerer 46148c8dd64SPeter Feuerer *temp = fanon - fanoff; 462e86435ebSPeter Feuerer 463e86435ebSPeter Feuerer return 0; 464e86435ebSPeter Feuerer } 465e86435ebSPeter Feuerer 466e86435ebSPeter Feuerer static int acerhdf_get_trip_temp(struct thermal_zone_device *thermal, int trip, 46717e8351aSSascha Hauer int *temp) 468e86435ebSPeter Feuerer { 469e86435ebSPeter Feuerer if (trip == 0) 470e86435ebSPeter Feuerer *temp = fanon; 4717e8b6d73SPeter Feuerer else if (trip == 1) 4727e8b6d73SPeter Feuerer *temp = ACERHDF_TEMP_CRIT; 4737e8b6d73SPeter Feuerer else 4747e8b6d73SPeter Feuerer return -EINVAL; 475e86435ebSPeter Feuerer 476e86435ebSPeter Feuerer return 0; 477e86435ebSPeter Feuerer } 478e86435ebSPeter Feuerer 479e86435ebSPeter Feuerer static int acerhdf_get_crit_temp(struct thermal_zone_device *thermal, 48017e8351aSSascha Hauer int *temperature) 481e86435ebSPeter Feuerer { 482e86435ebSPeter Feuerer *temperature = ACERHDF_TEMP_CRIT; 483e86435ebSPeter Feuerer return 0; 484e86435ebSPeter Feuerer } 485e86435ebSPeter Feuerer 486e86435ebSPeter Feuerer /* bind callback functions to thermalzone */ 487fedae5adSAxel Lin static struct thermal_zone_device_ops acerhdf_dev_ops = { 488e86435ebSPeter Feuerer .bind = acerhdf_bind, 489e86435ebSPeter Feuerer .unbind = acerhdf_unbind, 490e86435ebSPeter Feuerer .get_temp = acerhdf_get_ec_temp, 491e86435ebSPeter Feuerer .get_mode = acerhdf_get_mode, 492e86435ebSPeter Feuerer .set_mode = acerhdf_set_mode, 493e86435ebSPeter Feuerer .get_trip_type = acerhdf_get_trip_type, 49448c8dd64SPeter Feuerer .get_trip_hyst = acerhdf_get_trip_hyst, 495e86435ebSPeter Feuerer .get_trip_temp = acerhdf_get_trip_temp, 496e86435ebSPeter Feuerer .get_crit_temp = acerhdf_get_crit_temp, 497e86435ebSPeter Feuerer }; 498e86435ebSPeter Feuerer 499e86435ebSPeter Feuerer 500e86435ebSPeter Feuerer /* 501e86435ebSPeter Feuerer * cooling device callback functions 502e86435ebSPeter Feuerer * get maximal fan cooling state 503e86435ebSPeter Feuerer */ 504e86435ebSPeter Feuerer static int acerhdf_get_max_state(struct thermal_cooling_device *cdev, 505e86435ebSPeter Feuerer unsigned long *state) 506e86435ebSPeter Feuerer { 507e86435ebSPeter Feuerer *state = 1; 508e86435ebSPeter Feuerer 509e86435ebSPeter Feuerer return 0; 510e86435ebSPeter Feuerer } 511e86435ebSPeter Feuerer 512e86435ebSPeter Feuerer static int acerhdf_get_cur_state(struct thermal_cooling_device *cdev, 513e86435ebSPeter Feuerer unsigned long *state) 514e86435ebSPeter Feuerer { 515e86435ebSPeter Feuerer int err = 0, tmp; 516e86435ebSPeter Feuerer 517e86435ebSPeter Feuerer err = acerhdf_get_fanstate(&tmp); 518e86435ebSPeter Feuerer if (err) 519e86435ebSPeter Feuerer return err; 520e86435ebSPeter Feuerer 521e86435ebSPeter Feuerer *state = (tmp == ACERHDF_FAN_AUTO) ? 1 : 0; 522e86435ebSPeter Feuerer return 0; 523e86435ebSPeter Feuerer } 524e86435ebSPeter Feuerer 525e86435ebSPeter Feuerer /* change current fan state - is overwritten when running in kernel mode */ 526e86435ebSPeter Feuerer static int acerhdf_set_cur_state(struct thermal_cooling_device *cdev, 527e86435ebSPeter Feuerer unsigned long state) 528e86435ebSPeter Feuerer { 529e86435ebSPeter Feuerer int cur_temp, cur_state, err = 0; 530e86435ebSPeter Feuerer 531e86435ebSPeter Feuerer if (!kernelmode) 532e86435ebSPeter Feuerer return 0; 533e86435ebSPeter Feuerer 534e86435ebSPeter Feuerer err = acerhdf_get_temp(&cur_temp); 535e86435ebSPeter Feuerer if (err) { 536e86435ebSPeter Feuerer pr_err("error reading temperature, hand off control to BIOS\n"); 537e86435ebSPeter Feuerer goto err_out; 538e86435ebSPeter Feuerer } 539e86435ebSPeter Feuerer 540e86435ebSPeter Feuerer err = acerhdf_get_fanstate(&cur_state); 541e86435ebSPeter Feuerer if (err) { 542e86435ebSPeter Feuerer pr_err("error reading fan state, hand off control to BIOS\n"); 543e86435ebSPeter Feuerer goto err_out; 544e86435ebSPeter Feuerer } 545e86435ebSPeter Feuerer 546e86435ebSPeter Feuerer if (state == 0) { 54748c8dd64SPeter Feuerer if (cur_state == ACERHDF_FAN_AUTO) 548e86435ebSPeter Feuerer acerhdf_change_fanstate(ACERHDF_FAN_OFF); 549e86435ebSPeter Feuerer } else { 550e86435ebSPeter Feuerer if (cur_state == ACERHDF_FAN_OFF) 551e86435ebSPeter Feuerer acerhdf_change_fanstate(ACERHDF_FAN_AUTO); 552e86435ebSPeter Feuerer } 553e86435ebSPeter Feuerer return 0; 554e86435ebSPeter Feuerer 555e86435ebSPeter Feuerer err_out: 556e86435ebSPeter Feuerer acerhdf_revert_to_bios_mode(); 557e86435ebSPeter Feuerer return -EINVAL; 558e86435ebSPeter Feuerer } 559e86435ebSPeter Feuerer 560e86435ebSPeter Feuerer /* bind fan callbacks to fan device */ 561adee4551SBhumika Goyal static const struct thermal_cooling_device_ops acerhdf_cooling_ops = { 562e86435ebSPeter Feuerer .get_max_state = acerhdf_get_max_state, 563e86435ebSPeter Feuerer .get_cur_state = acerhdf_get_cur_state, 564e86435ebSPeter Feuerer .set_cur_state = acerhdf_set_cur_state, 565e86435ebSPeter Feuerer }; 566e86435ebSPeter Feuerer 567e86435ebSPeter Feuerer /* suspend / resume functionality */ 568ff27e1f3SBorislav Petkov static int acerhdf_suspend(struct device *dev) 569e86435ebSPeter Feuerer { 570e86435ebSPeter Feuerer if (kernelmode) 571e86435ebSPeter Feuerer acerhdf_change_fanstate(ACERHDF_FAN_AUTO); 572e86435ebSPeter Feuerer 573e86435ebSPeter Feuerer if (verbose) 574e86435ebSPeter Feuerer pr_notice("going suspend\n"); 575e86435ebSPeter Feuerer 576e86435ebSPeter Feuerer return 0; 577e86435ebSPeter Feuerer } 578e86435ebSPeter Feuerer 579b859f159SGreg Kroah-Hartman static int acerhdf_probe(struct platform_device *device) 580e86435ebSPeter Feuerer { 581e86435ebSPeter Feuerer return 0; 582e86435ebSPeter Feuerer } 583e86435ebSPeter Feuerer 584e86435ebSPeter Feuerer static int acerhdf_remove(struct platform_device *device) 585e86435ebSPeter Feuerer { 586e86435ebSPeter Feuerer return 0; 587e86435ebSPeter Feuerer } 588e86435ebSPeter Feuerer 58947145210SAlexey Dobriyan static const struct dev_pm_ops acerhdf_pm_ops = { 590ff27e1f3SBorislav Petkov .suspend = acerhdf_suspend, 591ff27e1f3SBorislav Petkov .freeze = acerhdf_suspend, 592ff27e1f3SBorislav Petkov }; 593ff27e1f3SBorislav Petkov 594ded0cdfcSPeter Feuerer static struct platform_driver acerhdf_driver = { 595e86435ebSPeter Feuerer .driver = { 596e86435ebSPeter Feuerer .name = "acerhdf", 597ff27e1f3SBorislav Petkov .pm = &acerhdf_pm_ops, 598e86435ebSPeter Feuerer }, 599e86435ebSPeter Feuerer .probe = acerhdf_probe, 600e86435ebSPeter Feuerer .remove = acerhdf_remove, 601e86435ebSPeter Feuerer }; 602e86435ebSPeter Feuerer 603dcbfb815SPeter Feuerer /* checks if str begins with start */ 604dcbfb815SPeter Feuerer static int str_starts_with(const char *str, const char *start) 605dcbfb815SPeter Feuerer { 606dcbfb815SPeter Feuerer unsigned long str_len = 0, start_len = 0; 607dcbfb815SPeter Feuerer 608dcbfb815SPeter Feuerer str_len = strlen(str); 609dcbfb815SPeter Feuerer start_len = strlen(start); 610dcbfb815SPeter Feuerer 611dcbfb815SPeter Feuerer if (str_len >= start_len && 612dcbfb815SPeter Feuerer !strncmp(str, start, start_len)) 613dcbfb815SPeter Feuerer return 1; 614dcbfb815SPeter Feuerer 615dcbfb815SPeter Feuerer return 0; 616dcbfb815SPeter Feuerer } 617e86435ebSPeter Feuerer 618e86435ebSPeter Feuerer /* check hardware */ 6191d0c3fd0SPaul Gortmaker static int __init acerhdf_check_hardware(void) 620e86435ebSPeter Feuerer { 621e86435ebSPeter Feuerer char const *vendor, *version, *product; 622f587f07fSPeter Feuerer const struct bios_settings *bt = NULL; 623f7eaf3fbSPaul Gortmaker int found = 0; 624e86435ebSPeter Feuerer 625e86435ebSPeter Feuerer /* get BIOS data */ 626e86435ebSPeter Feuerer vendor = dmi_get_system_info(DMI_SYS_VENDOR); 627e86435ebSPeter Feuerer version = dmi_get_system_info(DMI_BIOS_VERSION); 628e86435ebSPeter Feuerer product = dmi_get_system_info(DMI_PRODUCT_NAME); 629e86435ebSPeter Feuerer 6305cf4c07aSRahul Chaturvedi if (!vendor || !version || !product) { 6315cf4c07aSRahul Chaturvedi pr_err("error getting hardware information\n"); 6325cf4c07aSRahul Chaturvedi return -EINVAL; 6335cf4c07aSRahul Chaturvedi } 634ded0cdfcSPeter Feuerer 635e86435ebSPeter Feuerer pr_info("Acer Aspire One Fan driver, v.%s\n", DRV_VER); 636e86435ebSPeter Feuerer 637291bd0e4SPaul Gortmaker if (list_supported) { 638291bd0e4SPaul Gortmaker pr_info("List of supported Manufacturer/Model/BIOS:\n"); 639291bd0e4SPaul Gortmaker pr_info("---------------------------------------------------\n"); 640291bd0e4SPaul Gortmaker for (bt = bios_tbl; bt->vendor[0]; bt++) { 641291bd0e4SPaul Gortmaker pr_info("%-13s | %-17s | %-10s\n", bt->vendor, 642291bd0e4SPaul Gortmaker bt->product, bt->version); 643291bd0e4SPaul Gortmaker } 644291bd0e4SPaul Gortmaker pr_info("---------------------------------------------------\n"); 645291bd0e4SPaul Gortmaker return -ECANCELED; 646291bd0e4SPaul Gortmaker } 647291bd0e4SPaul Gortmaker 648ded0cdfcSPeter Feuerer if (force_bios[0]) { 649e86435ebSPeter Feuerer version = force_bios; 650ded0cdfcSPeter Feuerer pr_info("forcing BIOS version: %s\n", version); 651e86435ebSPeter Feuerer kernelmode = 0; 652e86435ebSPeter Feuerer } 653e86435ebSPeter Feuerer 654ded0cdfcSPeter Feuerer if (force_product[0]) { 655ded0cdfcSPeter Feuerer product = force_product; 656ded0cdfcSPeter Feuerer pr_info("forcing BIOS product: %s\n", product); 657ded0cdfcSPeter Feuerer kernelmode = 0; 658ded0cdfcSPeter Feuerer } 659ded0cdfcSPeter Feuerer 660e86435ebSPeter Feuerer if (verbose) 661e86435ebSPeter Feuerer pr_info("BIOS info: %s %s, product: %s\n", 662e86435ebSPeter Feuerer vendor, version, product); 663e86435ebSPeter Feuerer 664e86435ebSPeter Feuerer /* search BIOS version and vendor in BIOS settings table */ 665dcbfb815SPeter Feuerer for (bt = bios_tbl; bt->vendor[0]; bt++) { 666dcbfb815SPeter Feuerer /* 667dcbfb815SPeter Feuerer * check if actual hardware BIOS vendor, product and version 668dcbfb815SPeter Feuerer * IDs start with the strings of BIOS table entry 669dcbfb815SPeter Feuerer */ 670dcbfb815SPeter Feuerer if (str_starts_with(vendor, bt->vendor) && 671dcbfb815SPeter Feuerer str_starts_with(product, bt->product) && 672dcbfb815SPeter Feuerer str_starts_with(version, bt->version)) { 673f7eaf3fbSPaul Gortmaker found = 1; 674e86435ebSPeter Feuerer break; 675e86435ebSPeter Feuerer } 676e86435ebSPeter Feuerer } 677e86435ebSPeter Feuerer 678f7eaf3fbSPaul Gortmaker if (!found) { 679eecc5bbcSJoe Perches pr_err("unknown (unsupported) BIOS version %s/%s/%s, please report, aborting!\n", 680eecc5bbcSJoe Perches vendor, product, version); 681e86435ebSPeter Feuerer return -EINVAL; 682e86435ebSPeter Feuerer } 683e86435ebSPeter Feuerer 684f7eaf3fbSPaul Gortmaker /* Copy control settings from BIOS table before we free it. */ 685f7eaf3fbSPaul Gortmaker ctrl_cfg.fanreg = bt->fanreg; 686f7eaf3fbSPaul Gortmaker ctrl_cfg.tempreg = bt->tempreg; 687f7eaf3fbSPaul Gortmaker memcpy(&ctrl_cfg.cmd, &bt->cmd, sizeof(struct fancmd)); 688f7eaf3fbSPaul Gortmaker ctrl_cfg.mcmd_enable = bt->mcmd_enable; 689f7eaf3fbSPaul Gortmaker 690e86435ebSPeter Feuerer /* 691e86435ebSPeter Feuerer * if started with kernel mode off, prevent the kernel from switching 692e86435ebSPeter Feuerer * off the fan 693e86435ebSPeter Feuerer */ 694e86435ebSPeter Feuerer if (!kernelmode) { 695e86435ebSPeter Feuerer pr_notice("Fan control off, to enable do:\n"); 69614c20688SPaul Gortmaker pr_notice("echo -n \"enabled\" > /sys/class/thermal/thermal_zoneN/mode # N=0,1,2...\n"); 697e86435ebSPeter Feuerer } 698e86435ebSPeter Feuerer 699e86435ebSPeter Feuerer return 0; 700e86435ebSPeter Feuerer } 701e86435ebSPeter Feuerer 7021d0c3fd0SPaul Gortmaker static int __init acerhdf_register_platform(void) 703e86435ebSPeter Feuerer { 704e86435ebSPeter Feuerer int err = 0; 705e86435ebSPeter Feuerer 706ded0cdfcSPeter Feuerer err = platform_driver_register(&acerhdf_driver); 707e86435ebSPeter Feuerer if (err) 708e86435ebSPeter Feuerer return err; 709e86435ebSPeter Feuerer 710e86435ebSPeter Feuerer acerhdf_dev = platform_device_alloc("acerhdf", -1); 711a0dba697SAxel Lin if (!acerhdf_dev) { 712a0dba697SAxel Lin err = -ENOMEM; 713a0dba697SAxel Lin goto err_device_alloc; 714a0dba697SAxel Lin } 715a0dba697SAxel Lin err = platform_device_add(acerhdf_dev); 716a0dba697SAxel Lin if (err) 717a0dba697SAxel Lin goto err_device_add; 718e86435ebSPeter Feuerer 719e86435ebSPeter Feuerer return 0; 720a0dba697SAxel Lin 721a0dba697SAxel Lin err_device_add: 722a0dba697SAxel Lin platform_device_put(acerhdf_dev); 723a0dba697SAxel Lin err_device_alloc: 724a0dba697SAxel Lin platform_driver_unregister(&acerhdf_driver); 725a0dba697SAxel Lin return err; 726e86435ebSPeter Feuerer } 727e86435ebSPeter Feuerer 728e86435ebSPeter Feuerer static void acerhdf_unregister_platform(void) 729e86435ebSPeter Feuerer { 730a0dba697SAxel Lin platform_device_unregister(acerhdf_dev); 731ded0cdfcSPeter Feuerer platform_driver_unregister(&acerhdf_driver); 732e86435ebSPeter Feuerer } 733e86435ebSPeter Feuerer 7341d0c3fd0SPaul Gortmaker static int __init acerhdf_register_thermal(void) 735e86435ebSPeter Feuerer { 736e86435ebSPeter Feuerer cl_dev = thermal_cooling_device_register("acerhdf-fan", NULL, 737e86435ebSPeter Feuerer &acerhdf_cooling_ops); 738e86435ebSPeter Feuerer 739e86435ebSPeter Feuerer if (IS_ERR(cl_dev)) 740e86435ebSPeter Feuerer return -EINVAL; 741e86435ebSPeter Feuerer 7427e8b6d73SPeter Feuerer thz_dev = thermal_zone_device_register("acerhdf", 2, 0, NULL, 74348c8dd64SPeter Feuerer &acerhdf_dev_ops, 74448c8dd64SPeter Feuerer &acerhdf_zone_params, 0, 745e86435ebSPeter Feuerer (kernelmode) ? interval*1000 : 0); 746e86435ebSPeter Feuerer if (IS_ERR(thz_dev)) 747e86435ebSPeter Feuerer return -EINVAL; 748e86435ebSPeter Feuerer 74948c8dd64SPeter Feuerer if (strcmp(thz_dev->governor->name, 75048c8dd64SPeter Feuerer acerhdf_zone_params.governor_name)) { 75148c8dd64SPeter Feuerer pr_err("Didn't get thermal governor %s, perhaps not compiled into thermal subsystem.\n", 75248c8dd64SPeter Feuerer acerhdf_zone_params.governor_name); 75348c8dd64SPeter Feuerer return -EINVAL; 75448c8dd64SPeter Feuerer } 75548c8dd64SPeter Feuerer 756e86435ebSPeter Feuerer return 0; 757e86435ebSPeter Feuerer } 758e86435ebSPeter Feuerer 759e86435ebSPeter Feuerer static void acerhdf_unregister_thermal(void) 760e86435ebSPeter Feuerer { 761e86435ebSPeter Feuerer if (cl_dev) { 762e86435ebSPeter Feuerer thermal_cooling_device_unregister(cl_dev); 763e86435ebSPeter Feuerer cl_dev = NULL; 764e86435ebSPeter Feuerer } 765e86435ebSPeter Feuerer 766e86435ebSPeter Feuerer if (thz_dev) { 767e86435ebSPeter Feuerer thermal_zone_device_unregister(thz_dev); 768e86435ebSPeter Feuerer thz_dev = NULL; 769e86435ebSPeter Feuerer } 770e86435ebSPeter Feuerer } 771e86435ebSPeter Feuerer 772e86435ebSPeter Feuerer static int __init acerhdf_init(void) 773e86435ebSPeter Feuerer { 774e86435ebSPeter Feuerer int err = 0; 775e86435ebSPeter Feuerer 776e86435ebSPeter Feuerer err = acerhdf_check_hardware(); 777e86435ebSPeter Feuerer if (err) 778e86435ebSPeter Feuerer goto out_err; 779e86435ebSPeter Feuerer 780e86435ebSPeter Feuerer err = acerhdf_register_platform(); 781e86435ebSPeter Feuerer if (err) 782a0dba697SAxel Lin goto out_err; 783e86435ebSPeter Feuerer 784e86435ebSPeter Feuerer err = acerhdf_register_thermal(); 785e86435ebSPeter Feuerer if (err) 786e86435ebSPeter Feuerer goto err_unreg; 787e86435ebSPeter Feuerer 788e86435ebSPeter Feuerer return 0; 789e86435ebSPeter Feuerer 790e86435ebSPeter Feuerer err_unreg: 791e86435ebSPeter Feuerer acerhdf_unregister_thermal(); 792e86435ebSPeter Feuerer acerhdf_unregister_platform(); 793e86435ebSPeter Feuerer 794e86435ebSPeter Feuerer out_err: 795a0dba697SAxel Lin return err; 796e86435ebSPeter Feuerer } 797e86435ebSPeter Feuerer 798e86435ebSPeter Feuerer static void __exit acerhdf_exit(void) 799e86435ebSPeter Feuerer { 800e86435ebSPeter Feuerer acerhdf_change_fanstate(ACERHDF_FAN_AUTO); 801e86435ebSPeter Feuerer acerhdf_unregister_thermal(); 802e86435ebSPeter Feuerer acerhdf_unregister_platform(); 803e86435ebSPeter Feuerer } 804e86435ebSPeter Feuerer 805e86435ebSPeter Feuerer MODULE_LICENSE("GPL"); 806d3f5b736SPeter Kaestle MODULE_AUTHOR("Peter Kaestle"); 807e86435ebSPeter Feuerer MODULE_DESCRIPTION("Aspire One temperature and fan driver"); 808bdc731bcSStefan Bader MODULE_ALIAS("dmi:*:*Acer*:pnAOA*:"); 80943ae1e32SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAO751h*:"); 8102c3422d9SAnton V. Boyarshinov MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1410*:"); 8112c3422d9SAnton V. Boyarshinov MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1810*:"); 8127438d990SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAspire*5755G:"); 81343ae1e32SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1825PTZ:"); 8147438d990SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAO521*:"); 81524964639SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAO531*:"); 8167438d990SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAspire*5739G:"); 8177438d990SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAspire*One*753:"); 8187438d990SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAspire*5315:"); 81943ae1e32SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:TravelMate*7730G:"); 82026e5656eSPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAspire*7551:"); 8217438d990SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:TM8573T:"); 822bdc731bcSStefan Bader MODULE_ALIAS("dmi:*:*Gateway*:pnAOA*:"); 82394219d79SPeter Feuerer MODULE_ALIAS("dmi:*:*Gateway*:pnLT31*:"); 8242c3422d9SAnton V. Boyarshinov MODULE_ALIAS("dmi:*:*Packard*Bell*:pnAOA*:"); 8252c3422d9SAnton V. Boyarshinov MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOA*:"); 8262c3422d9SAnton V. Boyarshinov MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTMU*:"); 82743ae1e32SPeter Feuerer MODULE_ALIAS("dmi:*:*Packard*Bell*:pnENBFT*:"); 8282c3422d9SAnton V. Boyarshinov MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTMA*:"); 82943ae1e32SPeter Feuerer MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTVR46*:"); 830c0f61c51SChih-Wei Huang MODULE_ALIAS("dmi:*:*Acer*:pnExtensa*5420*:"); 831e86435ebSPeter Feuerer 832e86435ebSPeter Feuerer module_init(acerhdf_init); 833e86435ebSPeter Feuerer module_exit(acerhdf_exit); 834