| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Mark M. Hoffman | 846 | 58.14% | 4 | 16.00% |
| Jean Delvare | 487 | 33.47% | 9 | 36.00% |
| Craig Kelley | 33 | 2.27% | 1 | 4.00% |
| Joe Perches | 24 | 1.65% | 1 | 4.00% |
| Guenter Roeck | 23 | 1.58% | 3 | 12.00% |
| Axel Lin | 16 | 1.10% | 1 | 4.00% |
| Ingo Molnar | 11 | 0.76% | 1 | 4.00% |
| Laurent Riffard | 7 | 0.48% | 1 | 4.00% |
| Alexey Dobriyan | 5 | 0.34% | 1 | 4.00% |
| Tony Jones | 1 | 0.07% | 1 | 4.00% |
| Juerg Haefliger | 1 | 0.07% | 1 | 4.00% |
| H Hartley Sweeten | 1 | 0.07% | 1 | 4.00% |
| Total | 1455 | 25 |
/* * smsc47b397.c - Part of lm_sensors, Linux kernel modules * for hardware monitoring * * Supports the SMSC LPC47B397-NC Super-I/O chip. * * Author/Maintainer: Mark M. Hoffman <mhoffman@lightlink.com> * Copyright (C) 2004 Utilitek Systems, Inc. * * derived in part from smsc47m1.c: * Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com> * Copyright (C) 2004 Jean Delvare <jdelvare@suse.de> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/module.h> #include <linux/slab.h> #include <linux/ioport.h> #include <linux/jiffies.h> #include <linux/platform_device.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/err.h> #include <linux/init.h> #include <linux/mutex.h> #include <linux/acpi.h> #include <linux/io.h> static unsigned short force_id; module_param(force_id, ushort, 0); MODULE_PARM_DESC(force_id, "Override the detected device ID"); static struct platform_device *pdev; #define DRVNAME "smsc47b397" /* Super-I/0 registers and commands */ #define REG 0x2e /* The register to read/write */ #define VAL 0x2f /* The value to read/write */ static inline void superio_outb(int reg, int val) { outb(reg, REG); outb(val, VAL); } static inline int superio_inb(int reg) { outb(reg, REG); return inb(VAL); } /* select superio logical device */ static inline void superio_select(int ld) { superio_outb(0x07, ld); } static inline void superio_enter(void) { outb(0x55, REG); } static inline void superio_exit(void) { outb(0xAA, REG); } #define SUPERIO_REG_DEVID 0x20 #define SUPERIO_REG_DEVREV 0x21 #define SUPERIO_REG_BASE_MSB 0x60 #define SUPERIO_REG_BASE_LSB 0x61 #define SUPERIO_REG_LD8 0x08 #define SMSC_EXTENT 0x02 /* 0 <= nr <= 3 */ static u8 smsc47b397_reg_temp[] = {0x25, 0x26, 0x27, 0x80}; #define SMSC47B397_REG_TEMP(nr) (smsc47b397_reg_temp[(nr)]) /* 0 <= nr <= 3 */ #define SMSC47B397_REG_FAN_LSB(nr) (0x28 + 2 * (nr)) #define SMSC47B397_REG_FAN_MSB(nr) (0x29 + 2 * (nr)) struct smsc47b397_data { unsigned short addr; struct mutex lock; struct mutex update_lock; unsigned long last_updated; /* in jiffies */ int valid; /* register values */ u16 fan[4]; u8 temp[4]; }; static int smsc47b397_read_value(struct smsc47b397_data *data, u8 reg) { int res; mutex_lock(&data->lock); outb(reg, data->addr); res = inb_p(data->addr + 1); mutex_unlock(&data->lock); return res; } static struct smsc47b397_data *smsc47b397_update_device(struct device *dev) { struct smsc47b397_data *data = dev_get_drvdata(dev); int i; mutex_lock(&data->update_lock); if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { dev_dbg(dev, "starting device update...\n"); /* 4 temperature inputs, 4 fan inputs */ for (i = 0; i < 4; i++) { data->temp[i] = smsc47b397_read_value(data, SMSC47B397_REG_TEMP(i)); /* must read LSB first */ data->fan[i] = smsc47b397_read_value(data, SMSC47B397_REG_FAN_LSB(i)); data->fan[i] |= smsc47b397_read_value(data, SMSC47B397_REG_FAN_MSB(i)) << 8; } data->last_updated = jiffies; data->valid = 1; dev_dbg(dev, "... device update complete\n"); } mutex_unlock(&data->update_lock); return data; } /* * TEMP: 0.001C/bit (-128C to +127C) * REG: 1C/bit, two's complement */ static int temp_from_reg(u8 reg) { return (s8)reg * 1000; } static ssize_t show_temp(struct device *dev, struct device_attribute *devattr, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct smsc47b397_data *data = smsc47b397_update_device(dev); return sprintf(buf, "%d\n", temp_from_reg(data->temp[attr->index])); } static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL, 0); static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp, NULL, 1); static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, show_temp, NULL, 2); static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, show_temp, NULL, 3); /* * FAN: 1 RPM/bit * REG: count of 90kHz pulses / revolution */ static int fan_from_reg(u16 reg) { if (reg == 0 || reg == 0xffff) return 0; return 90000 * 60 / reg; } static ssize_t show_fan(struct device *dev, struct device_attribute *devattr, char *buf) { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct smsc47b397_data *data = smsc47b397_update_device(dev); return sprintf(buf, "%d\n", fan_from_reg(data->fan[attr->index])); } static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0); static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1); static SENSOR_DEVICE_ATTR(fan3_input, S_IRUGO, show_fan, NULL, 2); static SENSOR_DEVICE_ATTR(fan4_input, S_IRUGO, show_fan, NULL, 3); static struct attribute *smsc47b397_attrs[] = { &sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp2_input.dev_attr.attr, &sensor_dev_attr_temp3_input.dev_attr.attr, &sensor_dev_attr_temp4_input.dev_attr.attr, &sensor_dev_attr_fan1_input.dev_attr.attr, &sensor_dev_attr_fan2_input.dev_attr.attr, &sensor_dev_attr_fan3_input.dev_attr.attr, &sensor_dev_attr_fan4_input.dev_attr.attr, NULL }; ATTRIBUTE_GROUPS(smsc47b397); static int smsc47b397_probe(struct platform_device *pdev); static struct platform_driver smsc47b397_driver = { .driver = { .name = DRVNAME, }, .probe = smsc47b397_probe, }; static int smsc47b397_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct smsc47b397_data *data; struct device *hwmon_dev; struct resource *res; res = platform_get_resource(pdev, IORESOURCE_IO, 0); if (!devm_request_region(dev, res->start, SMSC_EXTENT, smsc47b397_driver.driver.name)) { dev_err(dev, "Region 0x%lx-0x%lx already in use!\n", (unsigned long)res->start, (unsigned long)res->start + SMSC_EXTENT - 1); return -EBUSY; } data = devm_kzalloc(dev, sizeof(struct smsc47b397_data), GFP_KERNEL); if (!data) return -ENOMEM; data->addr = res->start; mutex_init(&data->lock); mutex_init(&data->update_lock); hwmon_dev = devm_hwmon_device_register_with_groups(dev, "smsc47b397", data, smsc47b397_groups); return PTR_ERR_OR_ZERO(hwmon_dev); } static int __init smsc47b397_device_add(unsigned short address) { struct resource res = { .start = address, .end = address + SMSC_EXTENT - 1, .name = DRVNAME, .flags = IORESOURCE_IO, }; int err; err = acpi_check_resource_conflict(&res); if (err) goto exit; pdev = platform_device_alloc(DRVNAME, address); if (!pdev) { err = -ENOMEM; pr_err("Device allocation failed\n"); goto exit; } err = platform_device_add_resources(pdev, &res, 1); if (err) { pr_err("Device resource addition failed (%d)\n", err); goto exit_device_put; } err = platform_device_add(pdev); if (err) { pr_err("Device addition failed (%d)\n", err); goto exit_device_put; } return 0; exit_device_put: platform_device_put(pdev); exit: return err; } static int __init smsc47b397_find(void) { u8 id, rev; char *name; unsigned short addr; superio_enter(); id = force_id ? force_id : superio_inb(SUPERIO_REG_DEVID); switch (id) { case 0x81: name = "SCH5307-NS"; break; case 0x6f: name = "LPC47B397-NC"; break; case 0x85: case 0x8c: name = "SCH5317"; break; default: superio_exit(); return -ENODEV; } rev = superio_inb(SUPERIO_REG_DEVREV); superio_select(SUPERIO_REG_LD8); addr = (superio_inb(SUPERIO_REG_BASE_MSB) << 8) | superio_inb(SUPERIO_REG_BASE_LSB); pr_info("found SMSC %s (base address 0x%04x, revision %u)\n", name, addr, rev); superio_exit(); return addr; } static int __init smsc47b397_init(void) { unsigned short address; int ret; ret = smsc47b397_find(); if (ret < 0) return ret; address = ret; ret = platform_driver_register(&smsc47b397_driver); if (ret) goto exit; /* Sets global pdev as a side effect */ ret = smsc47b397_device_add(address); if (ret) goto exit_driver; return 0; exit_driver: platform_driver_unregister(&smsc47b397_driver); exit: return ret; } static void __exit smsc47b397_exit(void) { platform_device_unregister(pdev); platform_driver_unregister(&smsc47b397_driver); } MODULE_AUTHOR("Mark M. Hoffman <mhoffman@lightlink.com>"); MODULE_DESCRIPTION("SMSC LPC47B397 driver"); MODULE_LICENSE("GPL"); module_init(smsc47b397_init); module_exit(smsc47b397_exit);
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