From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751471AbaHIGuu (ORCPT ); Sat, 9 Aug 2014 02:50:50 -0400 Received: from mail-we0-f182.google.com ([74.125.82.182]:63589 "EHLO mail-we0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751346AbaHIGuT (ORCPT ); Sat, 9 Aug 2014 02:50:19 -0400 From: Goffredo Baroncelli X-Google-Original-From: Goffredo Baroncelli To: Benjamin Herrenschmidt Cc: LKML , Jean Delvare , Guenter Roeck , Goffredo Baroncelli Subject: [PATCH 5/5] Export the temperatures via hwmon Date: Sat, 9 Aug 2014 06:50:03 +0000 Message-Id: <1407567003-18332-6-git-send-email-kreijack@inwind.it> X-Mailer: git-send-email 2.1.0.rc1 In-Reply-To: <1407567003-18332-1-git-send-email-kreijack@inwind.it> References: <1407567003-18332-1-git-send-email-kreijack@inwind.it> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Export the temperature via the hwmon subsystem. See the list below for the sensors exported: $ cd /sys/devices/temperature/hwmon/hwmon0 $ echo "name: $(cat name)"; for i in temp*; do echo "$i: $(cat $i)"; done name: therm_windtunnel temp1_input: 59312 temp1_label: CPU temp2_input: 36750 temp2_label: Case temp3_input: 37750 temp3_label: Case2 The Case2 temperature is the sensor temperature inside the adm1030. Signed-off-by: Goffredo Baroncelli --- drivers/macintosh/therm_windtunnel.c | 96 ++++++++++++++++++++++++++++++++++-- 1 file changed, 92 insertions(+), 4 deletions(-) diff --git a/drivers/macintosh/therm_windtunnel.c b/drivers/macintosh/therm_windtunnel.c index 30a6588..fd9061d 100644 --- a/drivers/macintosh/therm_windtunnel.c +++ b/drivers/macintosh/therm_windtunnel.c @@ -37,6 +37,8 @@ #include #include #include +#include +#include #include #include @@ -58,9 +60,12 @@ static struct { struct i2c_client *thermostat; struct i2c_client *fan; + struct device *hwmon; + int overheat_temp; /* 100% fan at this temp */ int overheat_hyst; int temp; + int casetemp2; int casetemp; int fan_level; /* active fan_table setting */ @@ -120,6 +125,66 @@ static DEVICE_ATTR(case_temperature, S_IRUGO, show_case_temperature, NULL ); static DEVICE_ATTR(fan_level, S_IRUGO, show_fan_level, NULL); +static ssize_t +show_temp1(struct device *dev, struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "%d%03d\n", x.temp>>8, + (x.temp & 0xff) * 1000 / 256); +} + +static ssize_t +show_temp1_label(struct device *dev, struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "CPU\n"); +} + +static ssize_t +show_temp2(struct device *dev, struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "%d%03d\n", x.casetemp>>8, + (x.casetemp & 0xff) * 1000 / 256); +} + +static ssize_t +show_temp2_label(struct device *dev, struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "Case\n"); +} + + +static ssize_t +show_temp3(struct device *dev, struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "%d%03d\n", x.casetemp2>>8, + (x.casetemp2 & 0xff) * 1000 / 256); +} + +static ssize_t +show_temp3_label(struct device *dev, struct device_attribute *attr, char *buf) +{ + return sprintf(buf, "Case2\n"); +} + +static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp1, NULL); +static DEVICE_ATTR(temp1_label, S_IRUGO, show_temp1_label, NULL); +static DEVICE_ATTR(temp2_input, S_IRUGO, show_temp2, NULL); +static DEVICE_ATTR(temp2_label, S_IRUGO, show_temp2_label, NULL); +static DEVICE_ATTR(temp3_input, S_IRUGO, show_temp3, NULL); +static DEVICE_ATTR(temp3_label, S_IRUGO, show_temp3_label, NULL); + +static struct attribute *therm_windtunnel_attrs[] = { + &dev_attr_temp1_input.attr, + &dev_attr_temp1_label.attr, + &dev_attr_temp2_input.attr, + &dev_attr_temp2_label.attr, + &dev_attr_temp3_input.attr, + &dev_attr_temp3_label.attr, + + NULL, +}; + +ATTRIBUTE_GROUPS(therm_windtunnel); + /************************************************************************/ /* controller thread */ /************************************************************************/ @@ -172,16 +237,23 @@ tune_fan( int fan_setting ) static void poll_temp( void ) { - int temp, i, level, casetemp, tempchanged; + int temp, i, level, casetemp, tempchanged, casetemp2, reg06; + /* temperature read from ds1775 */ temp = read_reg( x.thermostat, 0, 2 ); /* this actually occurs when the computer is loaded */ if( temp < 0 ) return; - casetemp = read_reg(x.fan, 0x0b, 1) << 8; - casetemp |= (read_reg(x.fan, 0x06, 1) & 0x7) << 5; + /* + * temperatures read from the adm1030 + * casetemp is the external temperature sensor + * casetemp2 is the internal temperature sensor + */ + reg06 = read_reg(x.fan, 0x06, 1); + casetemp = (read_reg(x.fan, 0x0b, 1) << 8) | (reg06 & 0x07 << 5); + casetemp2 = (read_reg(x.fan, 0x0a, 1) << 8) | (reg06 & 0xc0); level = -1; for( i=0; (temp & 0xffff) > fan_table[i].temp ; i++ ) @@ -200,12 +272,15 @@ poll_temp( void ) * if verbose >=1 log each fan tuning * if verbose >=2 log each cpu temperature change */ - tempchanged = x.temp != temp || x.casetemp != casetemp; + tempchanged = x.temp != temp || x.casetemp != casetemp || + x.casetemp2 != casetemp2; if ((verbose > 1 && tempchanged) || (verbose > 0 && level >= 0)) { print_temp(KERN_INFO "CPU-temp: ", temp); if (casetemp) print_temp(", Case: ", casetemp); + if (casetemp2) + print_temp(", Case2: ", casetemp2); if (level >= 0) printk(", Fan: %d (tuned %+d)\n", 11-level, x.fan_level-level); @@ -215,6 +290,7 @@ poll_temp( void ) x.temp = temp; x.casetemp = casetemp; + x.casetemp2 = casetemp2; if( level >= 0 ) tune_fan( level ); @@ -274,11 +350,23 @@ setup_hardware( void ) if (err) printk(KERN_WARNING "Failed to create temperature attribute file(s).\n"); + + x.hwmon = hwmon_device_register_with_groups(&x.of_dev->dev, + "therm_windtunnel", NULL, + therm_windtunnel_groups); + if (IS_ERR(x.hwmon)) { + dev_warn(&x.of_dev->dev, "Failed to create the hwmon device\n"); + x.hwmon = NULL; + } } static void restore_regs( void ) { + if (x.hwmon) + hwmon_device_unregister(x.hwmon); + x.hwmon = NULL; + device_remove_file( &x.of_dev->dev, &dev_attr_cpu_temperature ); device_remove_file( &x.of_dev->dev, &dev_attr_case_temperature ); device_remove_file(&x.of_dev->dev, &dev_attr_fan_level); -- 2.1.0.rc1