From 99b0b5a3a1e994247e7533de0fd7e4d13ead0ddd Mon Sep 17 00:00:00 2001 From: Huacai Chen Date: Thu, 22 Jun 2017 23:06:51 +0800 Subject: [PATCH] MIPS: Loongson-3: Support 4 packages in CPU Hwmon driver Loongson-3 machines may have as many as 4 physical packages. Signed-off-by: Huacai Chen Cc: John Crispin Cc: Steven J . Hill Cc: Fuxin Zhang Cc: Zhangjin Wu Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/16588/ Signed-off-by: Ralf Baechle --- drivers/platform/mips/cpu_hwmon.c | 119 +++++++++++++++--------------- 1 file changed, 58 insertions(+), 61 deletions(-) diff --git a/drivers/platform/mips/cpu_hwmon.c b/drivers/platform/mips/cpu_hwmon.c index 46ab7d86ae1c8..322de58eebaf5 100644 --- a/drivers/platform/mips/cpu_hwmon.c +++ b/drivers/platform/mips/cpu_hwmon.c @@ -37,6 +37,7 @@ int loongson3_cpu_temp(int cpu) return (int)reg * 1000; } +static int nr_packages; static struct device *cpu_hwmon_dev; static ssize_t get_hwmon_name(struct device *dev, @@ -60,88 +61,74 @@ static ssize_t get_hwmon_name(struct device *dev, return sprintf(buf, "cpu-hwmon\n"); } -static ssize_t get_cpu0_temp(struct device *dev, +static ssize_t get_cpu_temp(struct device *dev, struct device_attribute *attr, char *buf); -static ssize_t get_cpu1_temp(struct device *dev, - struct device_attribute *attr, char *buf); -static ssize_t cpu0_temp_label(struct device *dev, - struct device_attribute *attr, char *buf); -static ssize_t cpu1_temp_label(struct device *dev, +static ssize_t cpu_temp_label(struct device *dev, struct device_attribute *attr, char *buf); -static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_cpu0_temp, NULL, 1); -static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, cpu0_temp_label, NULL, 1); -static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_cpu1_temp, NULL, 2); -static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, cpu1_temp_label, NULL, 2); - -static const struct attribute *hwmon_cputemp1[] = { - &sensor_dev_attr_temp1_input.dev_attr.attr, - &sensor_dev_attr_temp1_label.dev_attr.attr, - NULL -}; - -static const struct attribute *hwmon_cputemp2[] = { - &sensor_dev_attr_temp2_input.dev_attr.attr, - &sensor_dev_attr_temp2_label.dev_attr.attr, - NULL +static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, get_cpu_temp, NULL, 1); +static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, cpu_temp_label, NULL, 1); +static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, get_cpu_temp, NULL, 2); +static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, cpu_temp_label, NULL, 2); +static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, get_cpu_temp, NULL, 3); +static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, cpu_temp_label, NULL, 3); +static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, get_cpu_temp, NULL, 4); +static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, cpu_temp_label, NULL, 4); + +static const struct attribute *hwmon_cputemp[4][3] = { + { + &sensor_dev_attr_temp1_input.dev_attr.attr, + &sensor_dev_attr_temp1_label.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_temp2_input.dev_attr.attr, + &sensor_dev_attr_temp2_label.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_temp3_input.dev_attr.attr, + &sensor_dev_attr_temp3_label.dev_attr.attr, + NULL + }, + { + &sensor_dev_attr_temp4_input.dev_attr.attr, + &sensor_dev_attr_temp4_label.dev_attr.attr, + NULL + } }; -static ssize_t cpu0_temp_label(struct device *dev, +static ssize_t cpu_temp_label(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "CPU 0 Temperature\n"); + int id = (to_sensor_dev_attr(attr))->index - 1; + return sprintf(buf, "CPU %d Temperature\n", id); } -static ssize_t cpu1_temp_label(struct device *dev, +static ssize_t get_cpu_temp(struct device *dev, struct device_attribute *attr, char *buf) { - return sprintf(buf, "CPU 1 Temperature\n"); -} - -static ssize_t get_cpu0_temp(struct device *dev, - struct device_attribute *attr, char *buf) -{ - int value = loongson3_cpu_temp(0); - return sprintf(buf, "%d\n", value); -} - -static ssize_t get_cpu1_temp(struct device *dev, - struct device_attribute *attr, char *buf) -{ - int value = loongson3_cpu_temp(1); + int id = (to_sensor_dev_attr(attr))->index - 1; + int value = loongson3_cpu_temp(id); return sprintf(buf, "%d\n", value); } static int create_sysfs_cputemp_files(struct kobject *kobj) { - int ret; - - ret = sysfs_create_files(kobj, hwmon_cputemp1); - if (ret) - goto sysfs_create_temp1_fail; - - if (loongson_sysconf.nr_cpus <= loongson_sysconf.cores_per_package) - return 0; - - ret = sysfs_create_files(kobj, hwmon_cputemp2); - if (ret) - goto sysfs_create_temp2_fail; + int i, ret = 0; - return 0; + for (i=0; ikobj, hwmon_cputemp1); + int i; - if (loongson_sysconf.nr_cpus > loongson_sysconf.cores_per_package) - sysfs_remove_files(&cpu_hwmon_dev->kobj, hwmon_cputemp2); + for (i=0; i temp_max) + temp_max = value; + } + + if (temp_max <= CPU_THERMAL_THRESHOLD) schedule_delayed_work(&thermal_work, msecs_to_jiffies(5000)); else orderly_poweroff(true); @@ -169,6 +163,9 @@ static int __init loongson_hwmon_init(void) goto fail_hwmon_device_register; } + nr_packages = loongson_sysconf.nr_cpus / + loongson_sysconf.cores_per_package; + ret = sysfs_create_group(&cpu_hwmon_dev->kobj, &cpu_hwmon_attribute_group); if (ret) { -- 2.39.5