| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| David S. Miller | 1588 | 96.77% | 2 | 16.67% |
| Guenter Roeck | 26 | 1.58% | 1 | 8.33% |
| Grant C. Likely | 9 | 0.55% | 3 | 25.00% |
| Himangi Saraogi | 7 | 0.43% | 1 | 8.33% |
| Jean Delvare | 5 | 0.30% | 2 | 16.67% |
| Paul Gortmaker | 3 | 0.18% | 1 | 8.33% |
| Axel Lin | 2 | 0.12% | 1 | 8.33% |
| Thomas Gleixner | 1 | 0.06% | 1 | 8.33% |
| Total | 1641 | 12 |
// SPDX-License-Identifier: GPL-2.0-only /* * ultra45_env.c: Driver for Ultra45 PIC16F747 environmental monitor. * * Copyright (C) 2008 David S. Miller <davem@davemloft.net> */ #include <linux/kernel.h> #include <linux/types.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/of_device.h> #include <linux/io.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/err.h> #define DRV_MODULE_VERSION "0.1" MODULE_AUTHOR("David S. Miller (davem@davemloft.net)"); MODULE_DESCRIPTION("Ultra45 environmental monitor driver"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_MODULE_VERSION); /* PIC device registers */ #define REG_CMD 0x00UL #define REG_CMD_RESET 0x80 #define REG_CMD_ESTAR 0x01 #define REG_STAT 0x01UL #define REG_STAT_FWVER 0xf0 #define REG_STAT_TGOOD 0x08 #define REG_STAT_STALE 0x04 #define REG_STAT_BUSY 0x02 #define REG_STAT_FAULT 0x01 #define REG_DATA 0x40UL #define REG_ADDR 0x41UL #define REG_SIZE 0x42UL /* Registers accessed indirectly via REG_DATA/REG_ADDR */ #define IREG_FAN0 0x00 #define IREG_FAN1 0x01 #define IREG_FAN2 0x02 #define IREG_FAN3 0x03 #define IREG_FAN4 0x04 #define IREG_FAN5 0x05 #define IREG_LCL_TEMP 0x06 #define IREG_RMT1_TEMP 0x07 #define IREG_RMT2_TEMP 0x08 #define IREG_RMT3_TEMP 0x09 #define IREG_LM95221_TEMP 0x0a #define IREG_FIRE_TEMP 0x0b #define IREG_LSI1064_TEMP 0x0c #define IREG_FRONT_TEMP 0x0d #define IREG_FAN_STAT 0x0e #define IREG_VCORE0 0x0f #define IREG_VCORE1 0x10 #define IREG_VMEM0 0x11 #define IREG_VMEM1 0x12 #define IREG_PSU_TEMP 0x13 struct env { void __iomem *regs; spinlock_t lock; struct device *hwmon_dev; }; static u8 env_read(struct env *p, u8 ireg) { u8 ret; spin_lock(&p->lock); writeb(ireg, p->regs + REG_ADDR); ret = readb(p->regs + REG_DATA); spin_unlock(&p->lock); return ret; } static void env_write(struct env *p, u8 ireg, u8 val) { spin_lock(&p->lock); writeb(ireg, p->regs + REG_ADDR); writeb(val, p->regs + REG_DATA); spin_unlock(&p->lock); } /* * There seems to be a adr7462 providing these values, thus a lot * of these calculations are borrowed from the adt7470 driver. */ #define FAN_PERIOD_TO_RPM(x) ((90000 * 60) / (x)) #define FAN_RPM_TO_PERIOD FAN_PERIOD_TO_RPM #define FAN_PERIOD_INVALID (0xff << 8) #define FAN_DATA_VALID(x) ((x) && (x) != FAN_PERIOD_INVALID) static ssize_t show_fan_speed(struct device *dev, struct device_attribute *attr, char *buf) { int fan_nr = to_sensor_dev_attr(attr)->index; struct env *p = dev_get_drvdata(dev); int rpm, period; u8 val; val = env_read(p, IREG_FAN0 + fan_nr); period = (int) val << 8; if (FAN_DATA_VALID(period)) rpm = FAN_PERIOD_TO_RPM(period); else rpm = 0; return sprintf(buf, "%d\n", rpm); } static ssize_t set_fan_speed(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { int fan_nr = to_sensor_dev_attr(attr)->index; unsigned long rpm; struct env *p = dev_get_drvdata(dev); int period; u8 val; int err; err = kstrtoul(buf, 10, &rpm); if (err) return err; if (!rpm) return -EINVAL; period = FAN_RPM_TO_PERIOD(rpm); val = period >> 8; env_write(p, IREG_FAN0 + fan_nr, val); return count; } static ssize_t show_fan_fault(struct device *dev, struct device_attribute *attr, char *buf) { int fan_nr = to_sensor_dev_attr(attr)->index; struct env *p = dev_get_drvdata(dev); u8 val = env_read(p, IREG_FAN_STAT); return sprintf(buf, "%d\n", (val & (1 << fan_nr)) ? 1 : 0); } #define fan(index) \ static SENSOR_DEVICE_ATTR(fan##index##_speed, S_IRUGO | S_IWUSR, \ show_fan_speed, set_fan_speed, index); \ static SENSOR_DEVICE_ATTR(fan##index##_fault, S_IRUGO, \ show_fan_fault, NULL, index) fan(0); fan(1); fan(2); fan(3); fan(4); static SENSOR_DEVICE_ATTR(psu_fan_fault, S_IRUGO, show_fan_fault, NULL, 6); static ssize_t show_temp(struct device *dev, struct device_attribute *attr, char *buf) { int temp_nr = to_sensor_dev_attr(attr)->index; struct env *p = dev_get_drvdata(dev); s8 val; val = env_read(p, IREG_LCL_TEMP + temp_nr); return sprintf(buf, "%d\n", ((int) val) - 64); } static SENSOR_DEVICE_ATTR(adt7462_local_temp, S_IRUGO, show_temp, NULL, 0); static SENSOR_DEVICE_ATTR(cpu0_temp, S_IRUGO, show_temp, NULL, 1); static SENSOR_DEVICE_ATTR(cpu1_temp, S_IRUGO, show_temp, NULL, 2); static SENSOR_DEVICE_ATTR(motherboard_temp, S_IRUGO, show_temp, NULL, 3); static SENSOR_DEVICE_ATTR(lm95221_local_temp, S_IRUGO, show_temp, NULL, 4); static SENSOR_DEVICE_ATTR(fire_temp, S_IRUGO, show_temp, NULL, 5); static SENSOR_DEVICE_ATTR(lsi1064_local_temp, S_IRUGO, show_temp, NULL, 6); static SENSOR_DEVICE_ATTR(front_panel_temp, S_IRUGO, show_temp, NULL, 7); static SENSOR_DEVICE_ATTR(psu_temp, S_IRUGO, show_temp, NULL, 13); static ssize_t show_stat_bit(struct device *dev, struct device_attribute *attr, char *buf) { int index = to_sensor_dev_attr(attr)->index; struct env *p = dev_get_drvdata(dev); u8 val; val = readb(p->regs + REG_STAT); return sprintf(buf, "%d\n", (val & (1 << index)) ? 1 : 0); } static SENSOR_DEVICE_ATTR(fan_failure, S_IRUGO, show_stat_bit, NULL, 0); static SENSOR_DEVICE_ATTR(env_bus_busy, S_IRUGO, show_stat_bit, NULL, 1); static SENSOR_DEVICE_ATTR(env_data_stale, S_IRUGO, show_stat_bit, NULL, 2); static SENSOR_DEVICE_ATTR(tpm_self_test_passed, S_IRUGO, show_stat_bit, NULL, 3); static ssize_t show_fwver(struct device *dev, struct device_attribute *attr, char *buf) { struct env *p = dev_get_drvdata(dev); u8 val; val = readb(p->regs + REG_STAT); return sprintf(buf, "%d\n", val >> 4); } static SENSOR_DEVICE_ATTR(firmware_version, S_IRUGO, show_fwver, NULL, 0); static ssize_t show_name(struct device *dev, struct device_attribute *attr, char *buf) { return sprintf(buf, "ultra45\n"); } static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0); static struct attribute *env_attributes[] = { &sensor_dev_attr_fan0_speed.dev_attr.attr, &sensor_dev_attr_fan0_fault.dev_attr.attr, &sensor_dev_attr_fan1_speed.dev_attr.attr, &sensor_dev_attr_fan1_fault.dev_attr.attr, &sensor_dev_attr_fan2_speed.dev_attr.attr, &sensor_dev_attr_fan2_fault.dev_attr.attr, &sensor_dev_attr_fan3_speed.dev_attr.attr, &sensor_dev_attr_fan3_fault.dev_attr.attr, &sensor_dev_attr_fan4_speed.dev_attr.attr, &sensor_dev_attr_fan4_fault.dev_attr.attr, &sensor_dev_attr_psu_fan_fault.dev_attr.attr, &sensor_dev_attr_adt7462_local_temp.dev_attr.attr, &sensor_dev_attr_cpu0_temp.dev_attr.attr, &sensor_dev_attr_cpu1_temp.dev_attr.attr, &sensor_dev_attr_motherboard_temp.dev_attr.attr, &sensor_dev_attr_lm95221_local_temp.dev_attr.attr, &sensor_dev_attr_fire_temp.dev_attr.attr, &sensor_dev_attr_lsi1064_local_temp.dev_attr.attr, &sensor_dev_attr_front_panel_temp.dev_attr.attr, &sensor_dev_attr_psu_temp.dev_attr.attr, &sensor_dev_attr_fan_failure.dev_attr.attr, &sensor_dev_attr_env_bus_busy.dev_attr.attr, &sensor_dev_attr_env_data_stale.dev_attr.attr, &sensor_dev_attr_tpm_self_test_passed.dev_attr.attr, &sensor_dev_attr_firmware_version.dev_attr.attr, &sensor_dev_attr_name.dev_attr.attr, NULL, }; static const struct attribute_group env_group = { .attrs = env_attributes, }; static int env_probe(struct platform_device *op) { struct env *p = devm_kzalloc(&op->dev, sizeof(*p), GFP_KERNEL); int err = -ENOMEM; if (!p) goto out; spin_lock_init(&p->lock); p->regs = of_ioremap(&op->resource[0], 0, REG_SIZE, "pic16f747"); if (!p->regs) goto out; err = sysfs_create_group(&op->dev.kobj, &env_group); if (err) goto out_iounmap; p->hwmon_dev = hwmon_device_register(&op->dev); if (IS_ERR(p->hwmon_dev)) { err = PTR_ERR(p->hwmon_dev); goto out_sysfs_remove_group; } platform_set_drvdata(op, p); err = 0; out: return err; out_sysfs_remove_group: sysfs_remove_group(&op->dev.kobj, &env_group); out_iounmap: of_iounmap(&op->resource[0], p->regs, REG_SIZE); goto out; } static int env_remove(struct platform_device *op) { struct env *p = platform_get_drvdata(op); if (p) { sysfs_remove_group(&op->dev.kobj, &env_group); hwmon_device_unregister(p->hwmon_dev); of_iounmap(&op->resource[0], p->regs, REG_SIZE); } return 0; } static const struct of_device_id env_match[] = { { .name = "env-monitor", .compatible = "SUNW,ebus-pic16f747-env", }, {}, }; MODULE_DEVICE_TABLE(of, env_match); static struct platform_driver env_driver = { .driver = { .name = "ultra45_env", .of_match_table = env_match, }, .probe = env_probe, .remove = env_remove, }; module_platform_driver(env_driver);
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