1e86435ebSPeter Feuerer /* 2e86435ebSPeter Feuerer * acerhdf - A driver which monitors the temperature 3e86435ebSPeter Feuerer * of the aspire one netbook, turns on/off the fan 4e86435ebSPeter Feuerer * as soon as the upper/lower threshold is reached. 5e86435ebSPeter Feuerer * 6e86435ebSPeter Feuerer * (C) 2009 - Peter Feuerer peter (a) piie.net 7e86435ebSPeter Feuerer * http://piie.net 84e791c98SBorislav Petkov * 2009 Borislav Petkov bp (a) alien8.de 9e86435ebSPeter Feuerer * 10e86435ebSPeter Feuerer * Inspired by and many thanks to: 11e86435ebSPeter Feuerer * o acerfand - Rachel Greenham 12e86435ebSPeter Feuerer * o acer_ec.pl - Michael Kurz michi.kurz (at) googlemail.com 13e86435ebSPeter Feuerer * - Petr Tomasek tomasek (#) etf,cuni,cz 14e86435ebSPeter Feuerer * - Carlos Corbacho cathectic (at) gmail.com 15e86435ebSPeter Feuerer * o lkml - Matthew Garrett 16e86435ebSPeter Feuerer * - Borislav Petkov 17e86435ebSPeter Feuerer * - Andreas Mohr 18e86435ebSPeter Feuerer * 19e86435ebSPeter Feuerer * This program is free software; you can redistribute it and/or modify 20e86435ebSPeter Feuerer * it under the terms of the GNU General Public License as published by 21e86435ebSPeter Feuerer * the Free Software Foundation; either version 2 of the License, or 22e86435ebSPeter Feuerer * (at your option) any later version. 23e86435ebSPeter Feuerer * 24e86435ebSPeter Feuerer * This program is distributed in the hope that it will be useful, 25e86435ebSPeter Feuerer * but WITHOUT ANY WARRANTY; without even the implied warranty of 26e86435ebSPeter Feuerer * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 27e86435ebSPeter Feuerer * GNU General Public License for more details. 28e86435ebSPeter Feuerer * 29e86435ebSPeter Feuerer * You should have received a copy of the GNU General Public License 30e86435ebSPeter Feuerer * along with this program; if not, write to the Free Software 31e86435ebSPeter Feuerer * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 32e86435ebSPeter Feuerer */ 33e86435ebSPeter Feuerer 34e86435ebSPeter Feuerer #define pr_fmt(fmt) "acerhdf: " fmt 35e86435ebSPeter Feuerer 36e86435ebSPeter Feuerer #include <linux/kernel.h> 37e86435ebSPeter Feuerer #include <linux/module.h> 38e86435ebSPeter Feuerer #include <linux/dmi.h> 39c4bae98cSJean Delvare #include <linux/acpi.h> 40e86435ebSPeter Feuerer #include <linux/thermal.h> 41e86435ebSPeter Feuerer #include <linux/platform_device.h> 42e86435ebSPeter Feuerer 43e86435ebSPeter Feuerer /* 44e86435ebSPeter Feuerer * The driver is started with "kernel mode off" by default. That means, the BIOS 45e86435ebSPeter Feuerer * is still in control of the fan. In this mode the driver allows to read the 46e86435ebSPeter Feuerer * temperature of the cpu and a userspace tool may take over control of the fan. 47e86435ebSPeter Feuerer * If the driver is switched to "kernel mode" (e.g. via module parameter) the 48e86435ebSPeter Feuerer * driver is in full control of the fan. If you want the module to be started in 49e86435ebSPeter Feuerer * kernel mode by default, define the following: 50e86435ebSPeter Feuerer */ 51e86435ebSPeter Feuerer #undef START_IN_KERNEL_MODE 52e86435ebSPeter Feuerer 5348c8dd64SPeter Feuerer #define DRV_VER "0.7.0" 54e86435ebSPeter Feuerer 55e86435ebSPeter Feuerer /* 56e86435ebSPeter Feuerer * According to the Atom N270 datasheet, 57e86435ebSPeter Feuerer * (http://download.intel.com/design/processor/datashts/320032.pdf) the 58e86435ebSPeter Feuerer * CPU's optimal operating limits denoted in junction temperature as 59e86435ebSPeter Feuerer * measured by the on-die thermal monitor are within 0 <= Tj <= 90. So, 60e86435ebSPeter Feuerer * assume 89°C is critical temperature. 61e86435ebSPeter Feuerer */ 6270052917SPeter Feuerer #define ACERHDF_TEMP_CRIT 89000 63e86435ebSPeter Feuerer #define ACERHDF_FAN_OFF 0 64e86435ebSPeter Feuerer #define ACERHDF_FAN_AUTO 1 65e86435ebSPeter Feuerer 66e86435ebSPeter Feuerer /* 67e86435ebSPeter Feuerer * No matter what value the user puts into the fanon variable, turn on the fan 68e86435ebSPeter Feuerer * at 80 degree Celsius to prevent hardware damage 69e86435ebSPeter Feuerer */ 7070052917SPeter Feuerer #define ACERHDF_MAX_FANON 80000 71e86435ebSPeter Feuerer 72e86435ebSPeter Feuerer /* 73e86435ebSPeter Feuerer * Maximum interval between two temperature checks is 15 seconds, as the die 74e86435ebSPeter Feuerer * can get hot really fast under heavy load (plus we shouldn't forget about 75e86435ebSPeter Feuerer * possible impact of _external_ aggressive sources such as heaters, sun etc.) 76e86435ebSPeter Feuerer */ 77e86435ebSPeter Feuerer #define ACERHDF_MAX_INTERVAL 15 78e86435ebSPeter Feuerer 79e86435ebSPeter Feuerer #ifdef START_IN_KERNEL_MODE 80e86435ebSPeter Feuerer static int kernelmode = 1; 81e86435ebSPeter Feuerer #else 82e86435ebSPeter Feuerer static int kernelmode; 83e86435ebSPeter Feuerer #endif 84e86435ebSPeter Feuerer 85e86435ebSPeter Feuerer static unsigned int interval = 10; 86351963bbSPeter Feuerer static unsigned int fanon = 60000; 87351963bbSPeter Feuerer static unsigned int fanoff = 53000; 88e86435ebSPeter Feuerer static unsigned int verbose; 89291bd0e4SPaul Gortmaker static unsigned int list_supported; 90e86435ebSPeter Feuerer static unsigned int fanstate = ACERHDF_FAN_AUTO; 91e86435ebSPeter Feuerer static char force_bios[16]; 92ded0cdfcSPeter Feuerer static char force_product[16]; 93e86435ebSPeter Feuerer static unsigned int prev_interval; 94fedae5adSAxel Lin static struct thermal_zone_device *thz_dev; 95fedae5adSAxel Lin static struct thermal_cooling_device *cl_dev; 96fedae5adSAxel Lin static struct platform_device *acerhdf_dev; 97e86435ebSPeter Feuerer 98e86435ebSPeter Feuerer module_param(kernelmode, uint, 0); 99e86435ebSPeter Feuerer MODULE_PARM_DESC(kernelmode, "Kernel mode fan control on / off"); 100e86435ebSPeter Feuerer module_param(interval, uint, 0600); 101e86435ebSPeter Feuerer MODULE_PARM_DESC(interval, "Polling interval of temperature check"); 102e86435ebSPeter Feuerer module_param(fanon, uint, 0600); 103e86435ebSPeter Feuerer MODULE_PARM_DESC(fanon, "Turn the fan on above this temperature"); 104e86435ebSPeter Feuerer module_param(fanoff, uint, 0600); 105e86435ebSPeter Feuerer MODULE_PARM_DESC(fanoff, "Turn the fan off below this temperature"); 106e86435ebSPeter Feuerer module_param(verbose, uint, 0600); 107e86435ebSPeter Feuerer MODULE_PARM_DESC(verbose, "Enable verbose dmesg output"); 108291bd0e4SPaul Gortmaker module_param(list_supported, uint, 0600); 109291bd0e4SPaul Gortmaker MODULE_PARM_DESC(list_supported, "List supported models and BIOS versions"); 110e86435ebSPeter Feuerer module_param_string(force_bios, force_bios, 16, 0); 1113836b816SPaul Gortmaker MODULE_PARM_DESC(force_bios, "Pretend system has this known supported BIOS version"); 112ded0cdfcSPeter Feuerer module_param_string(force_product, force_product, 16, 0); 1133836b816SPaul Gortmaker MODULE_PARM_DESC(force_product, "Pretend system is this known supported model"); 114ded0cdfcSPeter Feuerer 115ded0cdfcSPeter Feuerer /* 116210183d4SPeter Feuerer * cmd_off: to switch the fan completely off and check if the fan is off 117ded0cdfcSPeter Feuerer * cmd_auto: to set the BIOS in control of the fan. The BIOS regulates then 118ded0cdfcSPeter Feuerer * the fan speed depending on the temperature 119ded0cdfcSPeter Feuerer */ 120ded0cdfcSPeter Feuerer struct fancmd { 121ded0cdfcSPeter Feuerer u8 cmd_off; 122ded0cdfcSPeter Feuerer u8 cmd_auto; 123ded0cdfcSPeter Feuerer }; 124e86435ebSPeter Feuerer 1255ef6578cSPeter Feuerer struct manualcmd { 1265ef6578cSPeter Feuerer u8 mreg; 1275ef6578cSPeter Feuerer u8 moff; 1285ef6578cSPeter Feuerer }; 1295ef6578cSPeter Feuerer 1305ef6578cSPeter Feuerer /* default register and command to disable fan in manual mode */ 1315ef6578cSPeter Feuerer static const struct manualcmd mcmd = { 1325ef6578cSPeter Feuerer .mreg = 0x94, 1335ef6578cSPeter Feuerer .moff = 0xff, 1345ef6578cSPeter Feuerer }; 1355ef6578cSPeter Feuerer 136e86435ebSPeter Feuerer /* BIOS settings */ 137f587f07fSPeter Feuerer struct bios_settings { 138e86435ebSPeter Feuerer const char *vendor; 139ded0cdfcSPeter Feuerer const char *product; 140e86435ebSPeter Feuerer const char *version; 141f587f07fSPeter Feuerer u8 fanreg; 142f587f07fSPeter Feuerer u8 tempreg; 143ded0cdfcSPeter Feuerer struct fancmd cmd; 1445ef6578cSPeter Feuerer int mcmd_enable; 145e86435ebSPeter Feuerer }; 146e86435ebSPeter Feuerer 147e86435ebSPeter Feuerer /* Register addresses and values for different BIOS versions */ 148f587f07fSPeter Feuerer static const struct bios_settings bios_tbl[] = { 149ded0cdfcSPeter Feuerer /* AOA110 */ 1505ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3109", 0x55, 0x58, {0x1f, 0x00}, 0}, 1515ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3114", 0x55, 0x58, {0x1f, 0x00}, 0}, 1525ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3301", 0x55, 0x58, {0xaf, 0x00}, 0}, 1535ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3304", 0x55, 0x58, {0xaf, 0x00}, 0}, 1545ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3305", 0x55, 0x58, {0xaf, 0x00}, 0}, 1555ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3307", 0x55, 0x58, {0xaf, 0x00}, 0}, 1565ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3308", 0x55, 0x58, {0x21, 0x00}, 0}, 1575ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3309", 0x55, 0x58, {0x21, 0x00}, 0}, 1585ef6578cSPeter Feuerer {"Acer", "AOA110", "v0.3310", 0x55, 0x58, {0x21, 0x00}, 0}, 159ded0cdfcSPeter Feuerer /* AOA150 */ 1605ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3114", 0x55, 0x58, {0x1f, 0x00}, 0}, 1615ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3301", 0x55, 0x58, {0x20, 0x00}, 0}, 1625ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3304", 0x55, 0x58, {0x20, 0x00}, 0}, 1635ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3305", 0x55, 0x58, {0x20, 0x00}, 0}, 1645ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3307", 0x55, 0x58, {0x20, 0x00}, 0}, 1655ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3308", 0x55, 0x58, {0x20, 0x00}, 0}, 1665ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3309", 0x55, 0x58, {0x20, 0x00}, 0}, 1675ef6578cSPeter Feuerer {"Acer", "AOA150", "v0.3310", 0x55, 0x58, {0x20, 0x00}, 0}, 16843ae1e32SPeter Feuerer /* LT1005u */ 1695ef6578cSPeter Feuerer {"Acer", "LT-10Q", "v0.3310", 0x55, 0x58, {0x20, 0x00}, 0}, 17036065746SPeter Feuerer /* Acer 1410 */ 1715ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v0.3108", 0x55, 0x58, {0x9e, 0x00}, 0}, 1725ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v0.3113", 0x55, 0x58, {0x9e, 0x00}, 0}, 1735ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v0.3115", 0x55, 0x58, {0x9e, 0x00}, 0}, 1745ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v0.3117", 0x55, 0x58, {0x9e, 0x00}, 0}, 1755ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v0.3119", 0x55, 0x58, {0x9e, 0x00}, 0}, 1765ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v0.3120", 0x55, 0x58, {0x9e, 0x00}, 0}, 1775ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v1.3204", 0x55, 0x58, {0x9e, 0x00}, 0}, 1785ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v1.3303", 0x55, 0x58, {0x9e, 0x00}, 0}, 1795ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v1.3308", 0x55, 0x58, {0x9e, 0x00}, 0}, 1805ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v1.3310", 0x55, 0x58, {0x9e, 0x00}, 0}, 1815ef6578cSPeter Feuerer {"Acer", "Aspire 1410", "v1.3314", 0x55, 0x58, {0x9e, 0x00}, 0}, 18294219d79SPeter Feuerer /* Acer 1810xx */ 1835ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v0.3108", 0x55, 0x58, {0x9e, 0x00}, 0}, 1845ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v0.3108", 0x55, 0x58, {0x9e, 0x00}, 0}, 1855ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v0.3113", 0x55, 0x58, {0x9e, 0x00}, 0}, 1865ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v0.3113", 0x55, 0x58, {0x9e, 0x00}, 0}, 1875ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v0.3115", 0x55, 0x58, {0x9e, 0x00}, 0}, 1885ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v0.3115", 0x55, 0x58, {0x9e, 0x00}, 0}, 1895ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v0.3117", 0x55, 0x58, {0x9e, 0x00}, 0}, 1905ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v0.3117", 0x55, 0x58, {0x9e, 0x00}, 0}, 1915ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v0.3119", 0x55, 0x58, {0x9e, 0x00}, 0}, 1925ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v0.3119", 0x55, 0x58, {0x9e, 0x00}, 0}, 1935ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v0.3120", 0x55, 0x58, {0x9e, 0x00}, 0}, 1945ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v0.3120", 0x55, 0x58, {0x9e, 0x00}, 0}, 1955ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v1.3204", 0x55, 0x58, {0x9e, 0x00}, 0}, 1965ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v1.3204", 0x55, 0x58, {0x9e, 0x00}, 0}, 1975ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v1.3303", 0x55, 0x58, {0x9e, 0x00}, 0}, 1985ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v1.3303", 0x55, 0x58, {0x9e, 0x00}, 0}, 1995ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v1.3308", 0x55, 0x58, {0x9e, 0x00}, 0}, 2005ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v1.3308", 0x55, 0x58, {0x9e, 0x00}, 0}, 2015ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v1.3310", 0x55, 0x58, {0x9e, 0x00}, 0}, 2025ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v1.3310", 0x55, 0x58, {0x9e, 0x00}, 0}, 2035ef6578cSPeter Feuerer {"Acer", "Aspire 1810TZ", "v1.3314", 0x55, 0x58, {0x9e, 0x00}, 0}, 2045ef6578cSPeter Feuerer {"Acer", "Aspire 1810T", "v1.3314", 0x55, 0x58, {0x9e, 0x00}, 0}, 2057438d990SPeter Feuerer /* Acer 5755G */ 2067438d990SPeter Feuerer {"Acer", "Aspire 5755G", "V1.20", 0xab, 0xb4, {0x00, 0x08}, 0}, 2077438d990SPeter Feuerer {"Acer", "Aspire 5755G", "V1.21", 0xab, 0xb3, {0x00, 0x08}, 0}, 2087438d990SPeter Feuerer /* Acer 521 */ 2097438d990SPeter Feuerer {"Acer", "AO521", "V1.11", 0x55, 0x58, {0x1f, 0x00}, 0}, 21024964639SPeter Feuerer /* Acer 531 */ 2115ef6578cSPeter Feuerer {"Acer", "AO531h", "v0.3104", 0x55, 0x58, {0x20, 0x00}, 0}, 2125ef6578cSPeter Feuerer {"Acer", "AO531h", "v0.3201", 0x55, 0x58, {0x20, 0x00}, 0}, 2135ef6578cSPeter Feuerer {"Acer", "AO531h", "v0.3304", 0x55, 0x58, {0x20, 0x00}, 0}, 21443ae1e32SPeter Feuerer /* Acer 751 */ 2157438d990SPeter Feuerer {"Acer", "AO751h", "V0.3206", 0x55, 0x58, {0x21, 0x00}, 0}, 2165ef6578cSPeter Feuerer {"Acer", "AO751h", "V0.3212", 0x55, 0x58, {0x21, 0x00}, 0}, 2177438d990SPeter Feuerer /* Acer 753 */ 2187438d990SPeter Feuerer {"Acer", "Aspire One 753", "V1.24", 0x93, 0xac, {0x14, 0x04}, 1}, 21943ae1e32SPeter Feuerer /* Acer 1825 */ 2205ef6578cSPeter Feuerer {"Acer", "Aspire 1825PTZ", "V1.3118", 0x55, 0x58, {0x9e, 0x00}, 0}, 2215ef6578cSPeter Feuerer {"Acer", "Aspire 1825PTZ", "V1.3127", 0x55, 0x58, {0x9e, 0x00}, 0}, 2227438d990SPeter Feuerer /* Acer Extensa 5420 */ 2237438d990SPeter Feuerer {"Acer", "Extensa 5420", "V1.17", 0x93, 0xac, {0x14, 0x04}, 1}, 2247438d990SPeter Feuerer /* Acer Aspire 5315 */ 2257438d990SPeter Feuerer {"Acer", "Aspire 5315", "V1.19", 0x93, 0xac, {0x14, 0x04}, 1}, 2267438d990SPeter Feuerer /* Acer Aspire 5739 */ 2277438d990SPeter Feuerer {"Acer", "Aspire 5739G", "V1.3311", 0x55, 0x58, {0x20, 0x00}, 0}, 22843ae1e32SPeter Feuerer /* Acer TravelMate 7730 */ 2295ef6578cSPeter Feuerer {"Acer", "TravelMate 7730G", "v0.3509", 0x55, 0x58, {0xaf, 0x00}, 0}, 2307438d990SPeter Feuerer /* Acer TravelMate TM8573T */ 2317438d990SPeter Feuerer {"Acer", "TM8573T", "V1.13", 0x93, 0xa8, {0x14, 0x04}, 1}, 23294219d79SPeter Feuerer /* Gateway */ 2335ef6578cSPeter Feuerer {"Gateway", "AOA110", "v0.3103", 0x55, 0x58, {0x21, 0x00}, 0}, 2345ef6578cSPeter Feuerer {"Gateway", "AOA150", "v0.3103", 0x55, 0x58, {0x20, 0x00}, 0}, 2355ef6578cSPeter Feuerer {"Gateway", "LT31", "v1.3103", 0x55, 0x58, {0x9e, 0x00}, 0}, 2365ef6578cSPeter Feuerer {"Gateway", "LT31", "v1.3201", 0x55, 0x58, {0x9e, 0x00}, 0}, 2375ef6578cSPeter Feuerer {"Gateway", "LT31", "v1.3302", 0x55, 0x58, {0x9e, 0x00}, 0}, 2385ef6578cSPeter Feuerer {"Gateway", "LT31", "v1.3303t", 0x55, 0x58, {0x9e, 0x00}, 0}, 239684238d7SPaul Gortmaker {"Gateway", "LT31", "v1.3307", 0x55, 0x58, {0x9e, 0x00}, 0}, 24094219d79SPeter Feuerer /* Packard Bell */ 2415ef6578cSPeter Feuerer {"Packard Bell", "DOA150", "v0.3104", 0x55, 0x58, {0x21, 0x00}, 0}, 2425ef6578cSPeter Feuerer {"Packard Bell", "DOA150", "v0.3105", 0x55, 0x58, {0x20, 0x00}, 0}, 2435ef6578cSPeter Feuerer {"Packard Bell", "AOA110", "v0.3105", 0x55, 0x58, {0x21, 0x00}, 0}, 2445ef6578cSPeter Feuerer {"Packard Bell", "AOA150", "v0.3105", 0x55, 0x58, {0x20, 0x00}, 0}, 2455ef6578cSPeter Feuerer {"Packard Bell", "ENBFT", "V1.3118", 0x55, 0x58, {0x9e, 0x00}, 0}, 2465ef6578cSPeter Feuerer {"Packard Bell", "ENBFT", "V1.3127", 0x55, 0x58, {0x9e, 0x00}, 0}, 2475ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v1.3303", 0x55, 0x58, {0x9e, 0x00}, 0}, 2485ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v0.3120", 0x55, 0x58, {0x9e, 0x00}, 0}, 2495ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v0.3108", 0x55, 0x58, {0x9e, 0x00}, 0}, 2505ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v0.3113", 0x55, 0x58, {0x9e, 0x00}, 0}, 2515ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v0.3115", 0x55, 0x58, {0x9e, 0x00}, 0}, 2525ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v0.3117", 0x55, 0x58, {0x9e, 0x00}, 0}, 2535ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v0.3119", 0x55, 0x58, {0x9e, 0x00}, 0}, 2545ef6578cSPeter Feuerer {"Packard Bell", "DOTMU", "v1.3204", 0x55, 0x58, {0x9e, 0x00}, 0}, 2555ef6578cSPeter Feuerer {"Packard Bell", "DOTMA", "v1.3201", 0x55, 0x58, {0x9e, 0x00}, 0}, 2565ef6578cSPeter Feuerer {"Packard Bell", "DOTMA", "v1.3302", 0x55, 0x58, {0x9e, 0x00}, 0}, 2575ef6578cSPeter Feuerer {"Packard Bell", "DOTMA", "v1.3303t", 0x55, 0x58, {0x9e, 0x00}, 0}, 2585ef6578cSPeter Feuerer {"Packard Bell", "DOTVR46", "v1.3308", 0x55, 0x58, {0x9e, 0x00}, 0}, 259ded0cdfcSPeter Feuerer /* pewpew-terminator */ 2605ef6578cSPeter Feuerer {"", "", "", 0, 0, {0, 0}, 0} 261e86435ebSPeter Feuerer }; 262e86435ebSPeter Feuerer 263f587f07fSPeter Feuerer static const struct bios_settings *bios_cfg __read_mostly; 264e86435ebSPeter Feuerer 26548c8dd64SPeter Feuerer /* 26648c8dd64SPeter Feuerer * this struct is used to instruct thermal layer to use bang_bang instead of 26748c8dd64SPeter Feuerer * default governor for acerhdf 26848c8dd64SPeter Feuerer */ 26948c8dd64SPeter Feuerer static struct thermal_zone_params acerhdf_zone_params = { 27048c8dd64SPeter Feuerer .governor_name = "bang_bang", 27148c8dd64SPeter Feuerer }; 272e86435ebSPeter Feuerer 273e86435ebSPeter Feuerer static int acerhdf_get_temp(int *temp) 274e86435ebSPeter Feuerer { 275e86435ebSPeter Feuerer u8 read_temp; 276e86435ebSPeter Feuerer 277e86435ebSPeter Feuerer if (ec_read(bios_cfg->tempreg, &read_temp)) 278e86435ebSPeter Feuerer return -EINVAL; 279e86435ebSPeter Feuerer 28070052917SPeter Feuerer *temp = read_temp * 1000; 281e86435ebSPeter Feuerer 282e86435ebSPeter Feuerer return 0; 283e86435ebSPeter Feuerer } 284e86435ebSPeter Feuerer 285e86435ebSPeter Feuerer static int acerhdf_get_fanstate(int *state) 286e86435ebSPeter Feuerer { 287e86435ebSPeter Feuerer u8 fan; 288e86435ebSPeter Feuerer 289e86435ebSPeter Feuerer if (ec_read(bios_cfg->fanreg, &fan)) 290e86435ebSPeter Feuerer return -EINVAL; 291e86435ebSPeter Feuerer 292210183d4SPeter Feuerer if (fan != bios_cfg->cmd.cmd_off) 293ded0cdfcSPeter Feuerer *state = ACERHDF_FAN_AUTO; 294ded0cdfcSPeter Feuerer else 295ded0cdfcSPeter Feuerer *state = ACERHDF_FAN_OFF; 296e86435ebSPeter Feuerer 297e86435ebSPeter Feuerer return 0; 298e86435ebSPeter Feuerer } 299e86435ebSPeter Feuerer 300e86435ebSPeter Feuerer static void acerhdf_change_fanstate(int state) 301e86435ebSPeter Feuerer { 302e86435ebSPeter Feuerer unsigned char cmd; 303e86435ebSPeter Feuerer 304e86435ebSPeter Feuerer if (verbose) 305eecc5bbcSJoe Perches pr_notice("fan %s\n", state == ACERHDF_FAN_OFF ? "OFF" : "ON"); 306e86435ebSPeter Feuerer 307e86435ebSPeter Feuerer if ((state != ACERHDF_FAN_OFF) && (state != ACERHDF_FAN_AUTO)) { 308e86435ebSPeter Feuerer pr_err("invalid fan state %d requested, setting to auto!\n", 309e86435ebSPeter Feuerer state); 310e86435ebSPeter Feuerer state = ACERHDF_FAN_AUTO; 311e86435ebSPeter Feuerer } 312e86435ebSPeter Feuerer 313ded0cdfcSPeter Feuerer cmd = (state == ACERHDF_FAN_OFF) ? bios_cfg->cmd.cmd_off 314ded0cdfcSPeter Feuerer : bios_cfg->cmd.cmd_auto; 315e86435ebSPeter Feuerer fanstate = state; 316e86435ebSPeter Feuerer 317e86435ebSPeter Feuerer ec_write(bios_cfg->fanreg, cmd); 3185ef6578cSPeter Feuerer 3195ef6578cSPeter Feuerer if (bios_cfg->mcmd_enable && state == ACERHDF_FAN_OFF) { 3205ef6578cSPeter Feuerer if (verbose) 3215ef6578cSPeter Feuerer pr_notice("turning off fan manually\n"); 3225ef6578cSPeter Feuerer ec_write(mcmd.mreg, mcmd.moff); 3235ef6578cSPeter Feuerer } 324e86435ebSPeter Feuerer } 325e86435ebSPeter Feuerer 326e86435ebSPeter Feuerer static void acerhdf_check_param(struct thermal_zone_device *thermal) 327e86435ebSPeter Feuerer { 328e86435ebSPeter Feuerer if (fanon > ACERHDF_MAX_FANON) { 329e86435ebSPeter Feuerer pr_err("fanon temperature too high, set to %d\n", 330e86435ebSPeter Feuerer ACERHDF_MAX_FANON); 331e86435ebSPeter Feuerer fanon = ACERHDF_MAX_FANON; 332e86435ebSPeter Feuerer } 333e86435ebSPeter Feuerer 334e86435ebSPeter Feuerer if (kernelmode && prev_interval != interval) { 335e86435ebSPeter Feuerer if (interval > ACERHDF_MAX_INTERVAL) { 336e86435ebSPeter Feuerer pr_err("interval too high, set to %d\n", 337e86435ebSPeter Feuerer ACERHDF_MAX_INTERVAL); 338e86435ebSPeter Feuerer interval = ACERHDF_MAX_INTERVAL; 339e86435ebSPeter Feuerer } 340e86435ebSPeter Feuerer if (verbose) 341eecc5bbcSJoe Perches pr_notice("interval changed to: %d\n", interval); 342e86435ebSPeter Feuerer thermal->polling_delay = interval*1000; 343e86435ebSPeter Feuerer prev_interval = interval; 344e86435ebSPeter Feuerer } 345e86435ebSPeter Feuerer } 346e86435ebSPeter Feuerer 347e86435ebSPeter Feuerer /* 348e86435ebSPeter Feuerer * This is the thermal zone callback which does the delayed polling of the fan 349e86435ebSPeter Feuerer * state. We do check /sysfs-originating settings here in acerhdf_check_param() 350e86435ebSPeter Feuerer * as late as the polling interval is since we can't do that in the respective 351e86435ebSPeter Feuerer * accessors of the module parameters. 352e86435ebSPeter Feuerer */ 35317e8351aSSascha Hauer static int acerhdf_get_ec_temp(struct thermal_zone_device *thermal, int *t) 354e86435ebSPeter Feuerer { 355e86435ebSPeter Feuerer int temp, err = 0; 356e86435ebSPeter Feuerer 357e86435ebSPeter Feuerer acerhdf_check_param(thermal); 358e86435ebSPeter Feuerer 359e86435ebSPeter Feuerer err = acerhdf_get_temp(&temp); 360e86435ebSPeter Feuerer if (err) 361e86435ebSPeter Feuerer return err; 362e86435ebSPeter Feuerer 363e86435ebSPeter Feuerer if (verbose) 364e86435ebSPeter Feuerer pr_notice("temp %d\n", temp); 365e86435ebSPeter Feuerer 366e86435ebSPeter Feuerer *t = temp; 367e86435ebSPeter Feuerer return 0; 368e86435ebSPeter Feuerer } 369e86435ebSPeter Feuerer 370e86435ebSPeter Feuerer static int acerhdf_bind(struct thermal_zone_device *thermal, 371e86435ebSPeter Feuerer struct thermal_cooling_device *cdev) 372e86435ebSPeter Feuerer { 373e86435ebSPeter Feuerer /* if the cooling device is the one from acerhdf bind it */ 374e86435ebSPeter Feuerer if (cdev != cl_dev) 375e86435ebSPeter Feuerer return 0; 376e86435ebSPeter Feuerer 3779d99842fSZhang Rui if (thermal_zone_bind_cooling_device(thermal, 0, cdev, 3786cd9e9f6SKapileshwar Singh THERMAL_NO_LIMIT, THERMAL_NO_LIMIT, 3796cd9e9f6SKapileshwar Singh THERMAL_WEIGHT_DEFAULT)) { 380e86435ebSPeter Feuerer pr_err("error binding cooling dev\n"); 381e86435ebSPeter Feuerer return -EINVAL; 382e86435ebSPeter Feuerer } 383e86435ebSPeter Feuerer return 0; 384e86435ebSPeter Feuerer } 385e86435ebSPeter Feuerer 386e86435ebSPeter Feuerer static int acerhdf_unbind(struct thermal_zone_device *thermal, 387e86435ebSPeter Feuerer struct thermal_cooling_device *cdev) 388e86435ebSPeter Feuerer { 389e86435ebSPeter Feuerer if (cdev != cl_dev) 390e86435ebSPeter Feuerer return 0; 391e86435ebSPeter Feuerer 392e86435ebSPeter Feuerer if (thermal_zone_unbind_cooling_device(thermal, 0, cdev)) { 393e86435ebSPeter Feuerer pr_err("error unbinding cooling dev\n"); 394e86435ebSPeter Feuerer return -EINVAL; 395e86435ebSPeter Feuerer } 396e86435ebSPeter Feuerer return 0; 397e86435ebSPeter Feuerer } 398e86435ebSPeter Feuerer 399e86435ebSPeter Feuerer static inline void acerhdf_revert_to_bios_mode(void) 400e86435ebSPeter Feuerer { 401e86435ebSPeter Feuerer acerhdf_change_fanstate(ACERHDF_FAN_AUTO); 402e86435ebSPeter Feuerer kernelmode = 0; 403e86435ebSPeter Feuerer if (thz_dev) 404e86435ebSPeter Feuerer thz_dev->polling_delay = 0; 405e86435ebSPeter Feuerer pr_notice("kernel mode fan control OFF\n"); 406e86435ebSPeter Feuerer } 407e86435ebSPeter Feuerer static inline void acerhdf_enable_kernelmode(void) 408e86435ebSPeter Feuerer { 409e86435ebSPeter Feuerer kernelmode = 1; 410e86435ebSPeter Feuerer 411e86435ebSPeter Feuerer thz_dev->polling_delay = interval*1000; 4120e70f466SSrinivas Pandruvada thermal_zone_device_update(thz_dev, THERMAL_EVENT_UNSPECIFIED); 413e86435ebSPeter Feuerer pr_notice("kernel mode fan control ON\n"); 414e86435ebSPeter Feuerer } 415e86435ebSPeter Feuerer 416e86435ebSPeter Feuerer static int acerhdf_get_mode(struct thermal_zone_device *thermal, 417e86435ebSPeter Feuerer enum thermal_device_mode *mode) 418e86435ebSPeter Feuerer { 419e86435ebSPeter Feuerer if (verbose) 420e86435ebSPeter Feuerer pr_notice("kernel mode fan control %d\n", kernelmode); 421e86435ebSPeter Feuerer 422e86435ebSPeter Feuerer *mode = (kernelmode) ? THERMAL_DEVICE_ENABLED 423e86435ebSPeter Feuerer : THERMAL_DEVICE_DISABLED; 424e86435ebSPeter Feuerer 425e86435ebSPeter Feuerer return 0; 426e86435ebSPeter Feuerer } 427e86435ebSPeter Feuerer 428e86435ebSPeter Feuerer /* 429e86435ebSPeter Feuerer * set operation mode; 430e86435ebSPeter Feuerer * enabled: the thermal layer of the kernel takes care about 431e86435ebSPeter Feuerer * the temperature and the fan. 432e86435ebSPeter Feuerer * disabled: the BIOS takes control of the fan. 433e86435ebSPeter Feuerer */ 434e86435ebSPeter Feuerer static int acerhdf_set_mode(struct thermal_zone_device *thermal, 435e86435ebSPeter Feuerer enum thermal_device_mode mode) 436e86435ebSPeter Feuerer { 437e86435ebSPeter Feuerer if (mode == THERMAL_DEVICE_DISABLED && kernelmode) 438e86435ebSPeter Feuerer acerhdf_revert_to_bios_mode(); 439e86435ebSPeter Feuerer else if (mode == THERMAL_DEVICE_ENABLED && !kernelmode) 440e86435ebSPeter Feuerer acerhdf_enable_kernelmode(); 441e86435ebSPeter Feuerer 442e86435ebSPeter Feuerer return 0; 443e86435ebSPeter Feuerer } 444e86435ebSPeter Feuerer 445e86435ebSPeter Feuerer static int acerhdf_get_trip_type(struct thermal_zone_device *thermal, int trip, 446e86435ebSPeter Feuerer enum thermal_trip_type *type) 447e86435ebSPeter Feuerer { 448e86435ebSPeter Feuerer if (trip == 0) 449e86435ebSPeter Feuerer *type = THERMAL_TRIP_ACTIVE; 4507e8b6d73SPeter Feuerer else if (trip == 1) 4517e8b6d73SPeter Feuerer *type = THERMAL_TRIP_CRITICAL; 4527e8b6d73SPeter Feuerer else 4537e8b6d73SPeter Feuerer return -EINVAL; 454e86435ebSPeter Feuerer 455e86435ebSPeter Feuerer return 0; 456e86435ebSPeter Feuerer } 457e86435ebSPeter Feuerer 45848c8dd64SPeter Feuerer static int acerhdf_get_trip_hyst(struct thermal_zone_device *thermal, int trip, 45917e8351aSSascha Hauer int *temp) 46048c8dd64SPeter Feuerer { 46148c8dd64SPeter Feuerer if (trip != 0) 46248c8dd64SPeter Feuerer return -EINVAL; 46348c8dd64SPeter Feuerer 46448c8dd64SPeter Feuerer *temp = fanon - fanoff; 465e86435ebSPeter Feuerer 466e86435ebSPeter Feuerer return 0; 467e86435ebSPeter Feuerer } 468e86435ebSPeter Feuerer 469e86435ebSPeter Feuerer static int acerhdf_get_trip_temp(struct thermal_zone_device *thermal, int trip, 47017e8351aSSascha Hauer int *temp) 471e86435ebSPeter Feuerer { 472e86435ebSPeter Feuerer if (trip == 0) 473e86435ebSPeter Feuerer *temp = fanon; 4747e8b6d73SPeter Feuerer else if (trip == 1) 4757e8b6d73SPeter Feuerer *temp = ACERHDF_TEMP_CRIT; 4767e8b6d73SPeter Feuerer else 4777e8b6d73SPeter Feuerer return -EINVAL; 478e86435ebSPeter Feuerer 479e86435ebSPeter Feuerer return 0; 480e86435ebSPeter Feuerer } 481e86435ebSPeter Feuerer 482e86435ebSPeter Feuerer static int acerhdf_get_crit_temp(struct thermal_zone_device *thermal, 48317e8351aSSascha Hauer int *temperature) 484e86435ebSPeter Feuerer { 485e86435ebSPeter Feuerer *temperature = ACERHDF_TEMP_CRIT; 486e86435ebSPeter Feuerer return 0; 487e86435ebSPeter Feuerer } 488e86435ebSPeter Feuerer 489e86435ebSPeter Feuerer /* bind callback functions to thermalzone */ 490fedae5adSAxel Lin static struct thermal_zone_device_ops acerhdf_dev_ops = { 491e86435ebSPeter Feuerer .bind = acerhdf_bind, 492e86435ebSPeter Feuerer .unbind = acerhdf_unbind, 493e86435ebSPeter Feuerer .get_temp = acerhdf_get_ec_temp, 494e86435ebSPeter Feuerer .get_mode = acerhdf_get_mode, 495e86435ebSPeter Feuerer .set_mode = acerhdf_set_mode, 496e86435ebSPeter Feuerer .get_trip_type = acerhdf_get_trip_type, 49748c8dd64SPeter Feuerer .get_trip_hyst = acerhdf_get_trip_hyst, 498e86435ebSPeter Feuerer .get_trip_temp = acerhdf_get_trip_temp, 499e86435ebSPeter Feuerer .get_crit_temp = acerhdf_get_crit_temp, 500e86435ebSPeter Feuerer }; 501e86435ebSPeter Feuerer 502e86435ebSPeter Feuerer 503e86435ebSPeter Feuerer /* 504e86435ebSPeter Feuerer * cooling device callback functions 505e86435ebSPeter Feuerer * get maximal fan cooling state 506e86435ebSPeter Feuerer */ 507e86435ebSPeter Feuerer static int acerhdf_get_max_state(struct thermal_cooling_device *cdev, 508e86435ebSPeter Feuerer unsigned long *state) 509e86435ebSPeter Feuerer { 510e86435ebSPeter Feuerer *state = 1; 511e86435ebSPeter Feuerer 512e86435ebSPeter Feuerer return 0; 513e86435ebSPeter Feuerer } 514e86435ebSPeter Feuerer 515e86435ebSPeter Feuerer static int acerhdf_get_cur_state(struct thermal_cooling_device *cdev, 516e86435ebSPeter Feuerer unsigned long *state) 517e86435ebSPeter Feuerer { 518e86435ebSPeter Feuerer int err = 0, tmp; 519e86435ebSPeter Feuerer 520e86435ebSPeter Feuerer err = acerhdf_get_fanstate(&tmp); 521e86435ebSPeter Feuerer if (err) 522e86435ebSPeter Feuerer return err; 523e86435ebSPeter Feuerer 524e86435ebSPeter Feuerer *state = (tmp == ACERHDF_FAN_AUTO) ? 1 : 0; 525e86435ebSPeter Feuerer return 0; 526e86435ebSPeter Feuerer } 527e86435ebSPeter Feuerer 528e86435ebSPeter Feuerer /* change current fan state - is overwritten when running in kernel mode */ 529e86435ebSPeter Feuerer static int acerhdf_set_cur_state(struct thermal_cooling_device *cdev, 530e86435ebSPeter Feuerer unsigned long state) 531e86435ebSPeter Feuerer { 532e86435ebSPeter Feuerer int cur_temp, cur_state, err = 0; 533e86435ebSPeter Feuerer 534e86435ebSPeter Feuerer if (!kernelmode) 535e86435ebSPeter Feuerer return 0; 536e86435ebSPeter Feuerer 537e86435ebSPeter Feuerer err = acerhdf_get_temp(&cur_temp); 538e86435ebSPeter Feuerer if (err) { 539e86435ebSPeter Feuerer pr_err("error reading temperature, hand off control to BIOS\n"); 540e86435ebSPeter Feuerer goto err_out; 541e86435ebSPeter Feuerer } 542e86435ebSPeter Feuerer 543e86435ebSPeter Feuerer err = acerhdf_get_fanstate(&cur_state); 544e86435ebSPeter Feuerer if (err) { 545e86435ebSPeter Feuerer pr_err("error reading fan state, hand off control to BIOS\n"); 546e86435ebSPeter Feuerer goto err_out; 547e86435ebSPeter Feuerer } 548e86435ebSPeter Feuerer 549e86435ebSPeter Feuerer if (state == 0) { 55048c8dd64SPeter Feuerer if (cur_state == ACERHDF_FAN_AUTO) 551e86435ebSPeter Feuerer acerhdf_change_fanstate(ACERHDF_FAN_OFF); 552e86435ebSPeter Feuerer } else { 553e86435ebSPeter Feuerer if (cur_state == ACERHDF_FAN_OFF) 554e86435ebSPeter Feuerer acerhdf_change_fanstate(ACERHDF_FAN_AUTO); 555e86435ebSPeter Feuerer } 556e86435ebSPeter Feuerer return 0; 557e86435ebSPeter Feuerer 558e86435ebSPeter Feuerer err_out: 559e86435ebSPeter Feuerer acerhdf_revert_to_bios_mode(); 560e86435ebSPeter Feuerer return -EINVAL; 561e86435ebSPeter Feuerer } 562e86435ebSPeter Feuerer 563e86435ebSPeter Feuerer /* bind fan callbacks to fan device */ 564adee4551SBhumika Goyal static const struct thermal_cooling_device_ops acerhdf_cooling_ops = { 565e86435ebSPeter Feuerer .get_max_state = acerhdf_get_max_state, 566e86435ebSPeter Feuerer .get_cur_state = acerhdf_get_cur_state, 567e86435ebSPeter Feuerer .set_cur_state = acerhdf_set_cur_state, 568e86435ebSPeter Feuerer }; 569e86435ebSPeter Feuerer 570e86435ebSPeter Feuerer /* suspend / resume functionality */ 571ff27e1f3SBorislav Petkov static int acerhdf_suspend(struct device *dev) 572e86435ebSPeter Feuerer { 573e86435ebSPeter Feuerer if (kernelmode) 574e86435ebSPeter Feuerer acerhdf_change_fanstate(ACERHDF_FAN_AUTO); 575e86435ebSPeter Feuerer 576e86435ebSPeter Feuerer if (verbose) 577e86435ebSPeter Feuerer pr_notice("going suspend\n"); 578e86435ebSPeter Feuerer 579e86435ebSPeter Feuerer return 0; 580e86435ebSPeter Feuerer } 581e86435ebSPeter Feuerer 582b859f159SGreg Kroah-Hartman static int acerhdf_probe(struct platform_device *device) 583e86435ebSPeter Feuerer { 584e86435ebSPeter Feuerer return 0; 585e86435ebSPeter Feuerer } 586e86435ebSPeter Feuerer 587e86435ebSPeter Feuerer static int acerhdf_remove(struct platform_device *device) 588e86435ebSPeter Feuerer { 589e86435ebSPeter Feuerer return 0; 590e86435ebSPeter Feuerer } 591e86435ebSPeter Feuerer 59247145210SAlexey Dobriyan static const struct dev_pm_ops acerhdf_pm_ops = { 593ff27e1f3SBorislav Petkov .suspend = acerhdf_suspend, 594ff27e1f3SBorislav Petkov .freeze = acerhdf_suspend, 595ff27e1f3SBorislav Petkov }; 596ff27e1f3SBorislav Petkov 597ded0cdfcSPeter Feuerer static struct platform_driver acerhdf_driver = { 598e86435ebSPeter Feuerer .driver = { 599e86435ebSPeter Feuerer .name = "acerhdf", 600ff27e1f3SBorislav Petkov .pm = &acerhdf_pm_ops, 601e86435ebSPeter Feuerer }, 602e86435ebSPeter Feuerer .probe = acerhdf_probe, 603e86435ebSPeter Feuerer .remove = acerhdf_remove, 604e86435ebSPeter Feuerer }; 605e86435ebSPeter Feuerer 606dcbfb815SPeter Feuerer /* checks if str begins with start */ 607dcbfb815SPeter Feuerer static int str_starts_with(const char *str, const char *start) 608dcbfb815SPeter Feuerer { 609dcbfb815SPeter Feuerer unsigned long str_len = 0, start_len = 0; 610dcbfb815SPeter Feuerer 611dcbfb815SPeter Feuerer str_len = strlen(str); 612dcbfb815SPeter Feuerer start_len = strlen(start); 613dcbfb815SPeter Feuerer 614dcbfb815SPeter Feuerer if (str_len >= start_len && 615dcbfb815SPeter Feuerer !strncmp(str, start, start_len)) 616dcbfb815SPeter Feuerer return 1; 617dcbfb815SPeter Feuerer 618dcbfb815SPeter Feuerer return 0; 619dcbfb815SPeter Feuerer } 620e86435ebSPeter Feuerer 621e86435ebSPeter Feuerer /* check hardware */ 622e86435ebSPeter Feuerer static int acerhdf_check_hardware(void) 623e86435ebSPeter Feuerer { 624e86435ebSPeter Feuerer char const *vendor, *version, *product; 625f587f07fSPeter Feuerer const struct bios_settings *bt = NULL; 626e86435ebSPeter Feuerer 627e86435ebSPeter Feuerer /* get BIOS data */ 628e86435ebSPeter Feuerer vendor = dmi_get_system_info(DMI_SYS_VENDOR); 629e86435ebSPeter Feuerer version = dmi_get_system_info(DMI_BIOS_VERSION); 630e86435ebSPeter Feuerer product = dmi_get_system_info(DMI_PRODUCT_NAME); 631e86435ebSPeter Feuerer 6325cf4c07aSRahul Chaturvedi if (!vendor || !version || !product) { 6335cf4c07aSRahul Chaturvedi pr_err("error getting hardware information\n"); 6345cf4c07aSRahul Chaturvedi return -EINVAL; 6355cf4c07aSRahul Chaturvedi } 636ded0cdfcSPeter Feuerer 637e86435ebSPeter Feuerer pr_info("Acer Aspire One Fan driver, v.%s\n", DRV_VER); 638e86435ebSPeter Feuerer 639291bd0e4SPaul Gortmaker if (list_supported) { 640291bd0e4SPaul Gortmaker pr_info("List of supported Manufacturer/Model/BIOS:\n"); 641291bd0e4SPaul Gortmaker pr_info("---------------------------------------------------\n"); 642291bd0e4SPaul Gortmaker for (bt = bios_tbl; bt->vendor[0]; bt++) { 643291bd0e4SPaul Gortmaker pr_info("%-13s | %-17s | %-10s\n", bt->vendor, 644291bd0e4SPaul Gortmaker bt->product, bt->version); 645291bd0e4SPaul Gortmaker } 646291bd0e4SPaul Gortmaker pr_info("---------------------------------------------------\n"); 647291bd0e4SPaul Gortmaker return -ECANCELED; 648291bd0e4SPaul Gortmaker } 649291bd0e4SPaul Gortmaker 650ded0cdfcSPeter Feuerer if (force_bios[0]) { 651e86435ebSPeter Feuerer version = force_bios; 652ded0cdfcSPeter Feuerer pr_info("forcing BIOS version: %s\n", version); 653e86435ebSPeter Feuerer kernelmode = 0; 654e86435ebSPeter Feuerer } 655e86435ebSPeter Feuerer 656ded0cdfcSPeter Feuerer if (force_product[0]) { 657ded0cdfcSPeter Feuerer product = force_product; 658ded0cdfcSPeter Feuerer pr_info("forcing BIOS product: %s\n", product); 659ded0cdfcSPeter Feuerer kernelmode = 0; 660ded0cdfcSPeter Feuerer } 661ded0cdfcSPeter Feuerer 662e86435ebSPeter Feuerer if (verbose) 663e86435ebSPeter Feuerer pr_info("BIOS info: %s %s, product: %s\n", 664e86435ebSPeter Feuerer vendor, version, product); 665e86435ebSPeter Feuerer 666e86435ebSPeter Feuerer /* search BIOS version and vendor in BIOS settings table */ 667dcbfb815SPeter Feuerer for (bt = bios_tbl; bt->vendor[0]; bt++) { 668dcbfb815SPeter Feuerer /* 669dcbfb815SPeter Feuerer * check if actual hardware BIOS vendor, product and version 670dcbfb815SPeter Feuerer * IDs start with the strings of BIOS table entry 671dcbfb815SPeter Feuerer */ 672dcbfb815SPeter Feuerer if (str_starts_with(vendor, bt->vendor) && 673dcbfb815SPeter Feuerer str_starts_with(product, bt->product) && 674dcbfb815SPeter Feuerer str_starts_with(version, bt->version)) { 675dcbfb815SPeter Feuerer bios_cfg = bt; 676e86435ebSPeter Feuerer break; 677e86435ebSPeter Feuerer } 678e86435ebSPeter Feuerer } 679e86435ebSPeter Feuerer 680e86435ebSPeter Feuerer if (!bios_cfg) { 681eecc5bbcSJoe Perches pr_err("unknown (unsupported) BIOS version %s/%s/%s, please report, aborting!\n", 682eecc5bbcSJoe Perches vendor, product, version); 683e86435ebSPeter Feuerer return -EINVAL; 684e86435ebSPeter Feuerer } 685e86435ebSPeter Feuerer 686e86435ebSPeter Feuerer /* 687e86435ebSPeter Feuerer * if started with kernel mode off, prevent the kernel from switching 688e86435ebSPeter Feuerer * off the fan 689e86435ebSPeter Feuerer */ 690e86435ebSPeter Feuerer if (!kernelmode) { 691e86435ebSPeter Feuerer pr_notice("Fan control off, to enable do:\n"); 69214c20688SPaul Gortmaker pr_notice("echo -n \"enabled\" > /sys/class/thermal/thermal_zoneN/mode # N=0,1,2...\n"); 693e86435ebSPeter Feuerer } 694e86435ebSPeter Feuerer 695e86435ebSPeter Feuerer return 0; 696e86435ebSPeter Feuerer } 697e86435ebSPeter Feuerer 698e86435ebSPeter Feuerer static int acerhdf_register_platform(void) 699e86435ebSPeter Feuerer { 700e86435ebSPeter Feuerer int err = 0; 701e86435ebSPeter Feuerer 702ded0cdfcSPeter Feuerer err = platform_driver_register(&acerhdf_driver); 703e86435ebSPeter Feuerer if (err) 704e86435ebSPeter Feuerer return err; 705e86435ebSPeter Feuerer 706e86435ebSPeter Feuerer acerhdf_dev = platform_device_alloc("acerhdf", -1); 707a0dba697SAxel Lin if (!acerhdf_dev) { 708a0dba697SAxel Lin err = -ENOMEM; 709a0dba697SAxel Lin goto err_device_alloc; 710a0dba697SAxel Lin } 711a0dba697SAxel Lin err = platform_device_add(acerhdf_dev); 712a0dba697SAxel Lin if (err) 713a0dba697SAxel Lin goto err_device_add; 714e86435ebSPeter Feuerer 715e86435ebSPeter Feuerer return 0; 716a0dba697SAxel Lin 717a0dba697SAxel Lin err_device_add: 718a0dba697SAxel Lin platform_device_put(acerhdf_dev); 719a0dba697SAxel Lin err_device_alloc: 720a0dba697SAxel Lin platform_driver_unregister(&acerhdf_driver); 721a0dba697SAxel Lin return err; 722e86435ebSPeter Feuerer } 723e86435ebSPeter Feuerer 724e86435ebSPeter Feuerer static void acerhdf_unregister_platform(void) 725e86435ebSPeter Feuerer { 726a0dba697SAxel Lin platform_device_unregister(acerhdf_dev); 727ded0cdfcSPeter Feuerer platform_driver_unregister(&acerhdf_driver); 728e86435ebSPeter Feuerer } 729e86435ebSPeter Feuerer 730e86435ebSPeter Feuerer static int acerhdf_register_thermal(void) 731e86435ebSPeter Feuerer { 732e86435ebSPeter Feuerer cl_dev = thermal_cooling_device_register("acerhdf-fan", NULL, 733e86435ebSPeter Feuerer &acerhdf_cooling_ops); 734e86435ebSPeter Feuerer 735e86435ebSPeter Feuerer if (IS_ERR(cl_dev)) 736e86435ebSPeter Feuerer return -EINVAL; 737e86435ebSPeter Feuerer 7387e8b6d73SPeter Feuerer thz_dev = thermal_zone_device_register("acerhdf", 2, 0, NULL, 73948c8dd64SPeter Feuerer &acerhdf_dev_ops, 74048c8dd64SPeter Feuerer &acerhdf_zone_params, 0, 741e86435ebSPeter Feuerer (kernelmode) ? interval*1000 : 0); 742e86435ebSPeter Feuerer if (IS_ERR(thz_dev)) 743e86435ebSPeter Feuerer return -EINVAL; 744e86435ebSPeter Feuerer 74548c8dd64SPeter Feuerer if (strcmp(thz_dev->governor->name, 74648c8dd64SPeter Feuerer acerhdf_zone_params.governor_name)) { 74748c8dd64SPeter Feuerer pr_err("Didn't get thermal governor %s, perhaps not compiled into thermal subsystem.\n", 74848c8dd64SPeter Feuerer acerhdf_zone_params.governor_name); 74948c8dd64SPeter Feuerer return -EINVAL; 75048c8dd64SPeter Feuerer } 75148c8dd64SPeter Feuerer 752e86435ebSPeter Feuerer return 0; 753e86435ebSPeter Feuerer } 754e86435ebSPeter Feuerer 755e86435ebSPeter Feuerer static void acerhdf_unregister_thermal(void) 756e86435ebSPeter Feuerer { 757e86435ebSPeter Feuerer if (cl_dev) { 758e86435ebSPeter Feuerer thermal_cooling_device_unregister(cl_dev); 759e86435ebSPeter Feuerer cl_dev = NULL; 760e86435ebSPeter Feuerer } 761e86435ebSPeter Feuerer 762e86435ebSPeter Feuerer if (thz_dev) { 763e86435ebSPeter Feuerer thermal_zone_device_unregister(thz_dev); 764e86435ebSPeter Feuerer thz_dev = NULL; 765e86435ebSPeter Feuerer } 766e86435ebSPeter Feuerer } 767e86435ebSPeter Feuerer 768e86435ebSPeter Feuerer static int __init acerhdf_init(void) 769e86435ebSPeter Feuerer { 770e86435ebSPeter Feuerer int err = 0; 771e86435ebSPeter Feuerer 772e86435ebSPeter Feuerer err = acerhdf_check_hardware(); 773e86435ebSPeter Feuerer if (err) 774e86435ebSPeter Feuerer goto out_err; 775e86435ebSPeter Feuerer 776e86435ebSPeter Feuerer err = acerhdf_register_platform(); 777e86435ebSPeter Feuerer if (err) 778a0dba697SAxel Lin goto out_err; 779e86435ebSPeter Feuerer 780e86435ebSPeter Feuerer err = acerhdf_register_thermal(); 781e86435ebSPeter Feuerer if (err) 782e86435ebSPeter Feuerer goto err_unreg; 783e86435ebSPeter Feuerer 784e86435ebSPeter Feuerer return 0; 785e86435ebSPeter Feuerer 786e86435ebSPeter Feuerer err_unreg: 787e86435ebSPeter Feuerer acerhdf_unregister_thermal(); 788e86435ebSPeter Feuerer acerhdf_unregister_platform(); 789e86435ebSPeter Feuerer 790e86435ebSPeter Feuerer out_err: 791a0dba697SAxel Lin return err; 792e86435ebSPeter Feuerer } 793e86435ebSPeter Feuerer 794e86435ebSPeter Feuerer static void __exit acerhdf_exit(void) 795e86435ebSPeter Feuerer { 796e86435ebSPeter Feuerer acerhdf_change_fanstate(ACERHDF_FAN_AUTO); 797e86435ebSPeter Feuerer acerhdf_unregister_thermal(); 798e86435ebSPeter Feuerer acerhdf_unregister_platform(); 799e86435ebSPeter Feuerer } 800e86435ebSPeter Feuerer 801e86435ebSPeter Feuerer MODULE_LICENSE("GPL"); 802e86435ebSPeter Feuerer MODULE_AUTHOR("Peter Feuerer"); 803e86435ebSPeter Feuerer MODULE_DESCRIPTION("Aspire One temperature and fan driver"); 804bdc731bcSStefan Bader MODULE_ALIAS("dmi:*:*Acer*:pnAOA*:"); 80543ae1e32SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAO751h*:"); 8062c3422d9SAnton V. Boyarshinov MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1410*:"); 8072c3422d9SAnton V. Boyarshinov MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1810*:"); 8087438d990SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAspire*5755G:"); 80943ae1e32SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAspire*1825PTZ:"); 8107438d990SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAO521*:"); 81124964639SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAO531*:"); 8127438d990SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAspire*5739G:"); 8137438d990SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAspire*One*753:"); 8147438d990SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnAspire*5315:"); 81543ae1e32SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:TravelMate*7730G:"); 8167438d990SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:TM8573T:"); 817bdc731bcSStefan Bader MODULE_ALIAS("dmi:*:*Gateway*:pnAOA*:"); 81894219d79SPeter Feuerer MODULE_ALIAS("dmi:*:*Gateway*:pnLT31*:"); 8192c3422d9SAnton V. Boyarshinov MODULE_ALIAS("dmi:*:*Packard*Bell*:pnAOA*:"); 8202c3422d9SAnton V. Boyarshinov MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOA*:"); 8212c3422d9SAnton V. Boyarshinov MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTMU*:"); 82243ae1e32SPeter Feuerer MODULE_ALIAS("dmi:*:*Packard*Bell*:pnENBFT*:"); 8232c3422d9SAnton V. Boyarshinov MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTMA*:"); 82443ae1e32SPeter Feuerer MODULE_ALIAS("dmi:*:*Packard*Bell*:pnDOTVR46*:"); 8257438d990SPeter Feuerer MODULE_ALIAS("dmi:*:*Acer*:pnExtensa 5420*:"); 826e86435ebSPeter Feuerer 827e86435ebSPeter Feuerer module_init(acerhdf_init); 828e86435ebSPeter Feuerer module_exit(acerhdf_exit); 829