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Date: Sat, 21 May 2016 16:52:46 +0200 From: Pali Rohár <pali.rohar@...il.com> To: Jean Delvare <jdelvare@...e.com>, Guenter Roeck <linux@...ck-us.net>, Tolga Cakir <cevelnet@...il.com> Cc: linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org, Pali Rohár <pali.rohar@...il.com> Subject: [PATCH] dell-smm-hwmon: Detect fan with index=2 Some Dell machines (e.g. Dell Precision M3800) have two fans, first with index=0 and second with index=2. So export also attributes for third fan device with index=2. Reported-by: Tolga Cakir <cevelnet@...il.com> Signed-off-by: Pali Rohár <pali.rohar@...il.com> --- drivers/hwmon/dell-smm-hwmon.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) --- Hi Tolga! Can you test this patch if sensors see fan device correctly? diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index 577445f..7a2764a 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -78,6 +78,7 @@ static uint i8k_fan_max = I8K_FAN_HIGH; #define I8K_HWMON_HAVE_TEMP4 (1 << 3) #define I8K_HWMON_HAVE_FAN1 (1 << 4) #define I8K_HWMON_HAVE_FAN2 (1 << 5) +#define I8K_HWMON_HAVE_FAN3 (1 << 6) MODULE_AUTHOR("Massimo Dal Zotto (dz@...ian.org)"); MODULE_AUTHOR("Pali Rohár <pali.rohar@...il.com>"); @@ -246,7 +247,7 @@ static int _i8k_get_fan_type(int fan) static int i8k_get_fan_type(int fan) { /* I8K_SMM_GET_FAN_TYPE SMM call is expensive, so cache values */ - static int types[2] = { INT_MIN, INT_MIN }; + static int types[3] = { INT_MIN, INT_MIN, INT_MIN }; if (types[fan] == INT_MIN) types[fan] = _i8k_get_fan_type(fan); @@ -707,6 +708,12 @@ static SENSOR_DEVICE_ATTR(fan2_label, S_IRUGO, i8k_hwmon_show_fan_label, NULL, 1); static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, i8k_hwmon_show_pwm, i8k_hwmon_set_pwm, 1); +static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, i8k_hwmon_show_fan, NULL, + 2); +static SENSOR_DEVICE_ATTR(fan3_label, S_IRUGO, i8k_hwmon_show_fan_label, NULL, + 2); +static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, i8k_hwmon_show_pwm, + i8k_hwmon_set_pwm, 2); static struct attribute *i8k_attrs[] = { &sensor_dev_attr_temp1_input.dev_attr.attr, /* 0 */ @@ -723,6 +730,9 @@ static struct attribute *i8k_attrs[] = { &sensor_dev_attr_fan2_input.dev_attr.attr, /* 11 */ &sensor_dev_attr_fan2_label.dev_attr.attr, /* 12 */ &sensor_dev_attr_pwm2.dev_attr.attr, /* 13 */ + &sensor_dev_attr_fan3_input.dev_attr.attr, /* 14 */ + &sensor_dev_attr_fan3_label.dev_attr.attr, /* 15 */ + &sensor_dev_attr_pwm3.dev_attr.attr, /* 16 */ NULL }; @@ -747,6 +757,9 @@ static umode_t i8k_is_visible(struct kobject *kobj, struct attribute *attr, if (index >= 11 && index <= 13 && !(i8k_hwmon_flags & I8K_HWMON_HAVE_FAN2)) return 0; + if (index >= 14 && index <= 16 && + !(i8k_hwmon_flags & I8K_HWMON_HAVE_FAN3)) + return 0; return attr->mode; } @@ -788,6 +801,11 @@ static int __init i8k_init_hwmon(void) if (err >= 0) i8k_hwmon_flags |= I8K_HWMON_HAVE_FAN2; + /* Third fan attributes, if fan status is OK */ + err = i8k_get_fan_status(2); + if (err >= 0) + i8k_hwmon_flags |= I8K_HWMON_HAVE_FAN3; + i8k_hwmon_dev = hwmon_device_register_with_groups(NULL, "dell_smm", NULL, i8k_groups); if (IS_ERR(i8k_hwmon_dev)) { -- 1.7.9.5
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