litmus-rt.git - The LITMUS^RT kernel.

diff options

author	Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2013-04-01 15:01:10 -0400
committer	Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2013-04-01 15:01:10 -0400
commit	ef99f3aee9641d10a7c80d4803d2f0f004c797ca (patch)
tree	83f14ccef66db48fc4178bd8b973462006de86b8 /fs/btrfs/send.c
parent	cb06ff102e2d79a82cf780aa5e6947b2e0529ac0 (diff)
parent	07961ac7c0ee8b546658717034fe692fd12eefa9 (diff)

Merge 3.9-rc5 into tty-next

We need the fixes here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Diffstat (limited to 'fs/btrfs/send.c')

-rw-r--r--

fs/btrfs/send.c

1 files changed, 4 insertions, 6 deletions

                     found_key.type != key.type) {
                         key.offset += right_len;
                         break;
-                } else {
+                }
-                        if (found_key.offset != key.offset + right_len) {
+                if (found_key.offset != key.offset + right_len) {
-                                /* Should really not happen */
+                        ret = 0;
-                                ret = -EIO;
+                        goto out;
-                                goto out;
-                        }
                 }
                 key = found_key;
         }

/* * lm87.c * * Copyright (C) 2000 Frodo Looijaard <frodol@dds.nl> * Philip Edelbrock <phil@netroedge.com> * Stephen Rousset <stephen.rousset@rocketlogix.com> * Dan Eaton <dan.eaton@rocketlogix.com> * Copyright (C) 2004-2008 Jean Delvare <khali@linux-fr.org> * * Original port to Linux 2.6 by Jeff Oliver. * * The LM87 is a sensor chip made by National Semiconductor. It monitors up * to 8 voltages (including its own power source), up to three temperatures * (its own plus up to two external ones) and up to two fans. The default * configuration is 6 voltages, two temperatures and two fans (see below). * Voltages are scaled internally with ratios such that the nominal value of * each voltage correspond to a register value of 192 (which means a * resolution of about 0.5% of the nominal value). Temperature values are * reported with a 1 deg resolution and a 3-4 deg accuracy. Complete * datasheet can be obtained from National's website at: * http://www.national.com/pf/LM/LM87.html * * Some functions share pins, so not all functions are available at the same * time. Which are depends on the hardware setup. This driver normally * assumes that firmware configured the chip correctly. Where this is not * the case, platform code must set the I2C client's platform_data to point * to a u8 value to be written to the channel register. * For reference, here is the list of exclusive functions: * - in0+in5 (default) or temp3 * - fan1 (default) or in6 * - fan2 (default) or in7 * - VID lines (default) or IRQ lines (not handled by this driver) * * The LM87 additionally features an analog output, supposedly usable to * control the speed of a fan. All new chips use pulse width modulation * instead. The LM87 is the only hardware monitoring chipset I know of * which uses amplitude modulation. Be careful when using this feature. * * This driver also supports the ADM1024, a sensor chip made by Analog * Devices. That chip is fully compatible with the LM87. Complete * datasheet can be obtained from Analog's website at: * http://www.analog.com/en/prod/0,2877,ADM1024,00.html * * 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. */ #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/i2c.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/hwmon-vid.h> #include <linux/err.h> #include <linux/mutex.h> /* * Addresses to scan * LM87 has three possible addresses: 0x2c, 0x2d and 0x2e. */ static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END }; enum chips { lm87, adm1024 }; /* * The LM87 registers */ /* nr in 0..5 */ #define LM87_REG_IN(nr) (0x20 + (nr)) #define LM87_REG_IN_MAX(nr) (0x2B + (nr) * 2) #define LM87_REG_IN_MIN(nr) (0x2C + (nr) * 2) /* nr in 0..1 */ #define LM87_REG_AIN(nr) (0x28 + (nr)) #define LM87_REG_AIN_MIN(nr) (0x1A + (nr)) #define LM87_REG_AIN_MAX(nr) (0x3B + (nr)) static u8 LM87_REG_TEMP[3] = { 0x27, 0x26, 0x20 }; static u8 LM87_REG_TEMP_HIGH[3] = { 0x39, 0x37, 0x2B }; static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C }; #define LM87_REG_TEMP_HW_INT_LOCK 0x13 #define LM87_REG_TEMP_HW_EXT_LOCK 0x14 #define LM87_REG_TEMP_HW_INT 0x17 #define LM87_REG_TEMP_HW_EXT 0x18 /* nr in 0..1 */ #define LM87_REG_FAN(nr) (0x28 + (nr)) #define LM87_REG_FAN_MIN(nr) (0x3B + (nr)) #define LM87_REG_AOUT 0x19 #define LM87_REG_CONFIG 0x40 #define LM87_REG_CHANNEL_MODE 0x16 #define LM87_REG_VID_FAN_DIV 0x47 #define LM87_REG_VID4 0x49 #define LM87_REG_ALARMS1 0x41 #define LM87_REG_ALARMS2 0x42 #define LM87_REG_COMPANY_ID 0x3E #define LM87_REG_REVISION 0x3F /* * Conversions and various macros * The LM87 uses signed 8-bit values for temperatures. */ #define IN_FROM_REG(reg,scale) (((reg) * (scale) + 96) / 192) #define IN_TO_REG(val,scale) ((val) <= 0 ? 0 : \ (val) * 192 >= (scale) * 255 ? 255 : \ ((val) * 192 + (scale)/2) / (scale)) #define TEMP_FROM_REG(reg) ((reg) * 1000) #define TEMP_TO_REG(val) ((val) <= -127500 ? -128 : \ (val) >= 126500 ? 127 : \ (((val) < 0 ? (val)-500 : (val)+500) / 1000)) #define FAN_FROM_REG(reg,div) ((reg) == 255 || (reg) == 0 ? 0 : \ (1350000 + (reg)*(div) / 2) / ((reg)*(div))) #define FAN_TO_REG(val,div) ((val)*(div) * 255 <= 1350000 ? 255 : \ (1350000 + (val)*(div) / 2) / ((val)*(div))) #define FAN_DIV_FROM_REG(reg) (1 << (reg)) /* analog out is 9.80mV/LSB */ #define AOUT_FROM_REG(reg) (((reg) * 98 + 5) / 10) #define AOUT_TO_REG(val) ((val) <= 0 ? 0 : \ (val) >= 2500 ? 255 : \ ((val) * 10 + 49) / 98) /* nr in 0..1 */ #define CHAN_NO_FAN(nr) (1 << (nr)) #define CHAN_TEMP3 (1 << 2) #define CHAN_VCC_5V (1 << 3) #define CHAN_NO_VID (1 << 7) /* * Functions declaration */ static int lm87_probe(struct i2c_client *client, const struct i2c_device_id *id); static int lm87_detect(struct i2c_client *new_client, struct i2c_board_info *info); static void lm87_init_client(struct i2c_client *client); static int lm87_remove(struct i2c_client *client); static struct lm87_data *lm87_update_device(struct device *dev); /* * Driver data (common to all clients) */ static const struct i2c_device_id lm87_id[] = { { "lm87", lm87 }, { "adm1024", adm1024 }, { } }; MODULE_DEVICE_TABLE(i2c, lm87_id); static struct i2c_driver lm87_driver = { .class = I2C_CLASS_HWMON, .driver = { .name = "lm87", }, .probe = lm87_probe, .remove = lm87_remove, .id_table = lm87_id, .detect = lm87_detect, .address_list = normal_i2c, }; /* * Client data (each client gets its own) */ struct lm87_data { struct device *hwmon_dev; struct mutex update_lock; char valid; /* zero until following fields are valid */ unsigned long last_updated; /* In jiffies */ u8 channel; /* register value */ u8 config; /* original register value */ u8 in[8]; /* register value */ u8 in_max[8]; /* register value */ u8 in_min[8]; /* register value */ u16 in_scale[8]; s8 temp[3]; /* register value */ s8 temp_high[3]; /* register value */ s8 temp_low[3]; /* register value */ s8 temp_crit_int; /* min of two register values */ s8 temp_crit_ext; /* min of two register values */ u8 fan[2]; /* register value */ u8 fan_min[2]; /* register value */ u8 fan_div[2]; /* register value, shifted right */ u8 aout; /* register value */ u16 alarms; /* register values, combined */ u8 vid; /* register values, combined */ u8 vrm; }; /* * Sysfs stuff */ static inline int lm87_read_value(struct i2c_client *client, u8 reg) { return i2c_smbus_read_byte_data(client, reg); } static inline int lm87_write_value(struct i2c_client *client, u8 reg, u8 value) { return i2c_smbus_write_byte_data(client, reg, value); } #define show_in(offset) \ static ssize_t show_in##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ { \ struct lm87_data *data = lm87_update_device(dev); \ return sprintf(buf, "%u\n", IN_FROM_REG(data->in[offset], \ data->in_scale[offset])); \ } \ static ssize_t show_in##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \ { \ struct lm87_data *data = lm87_update_device(dev); \ return sprintf(buf, "%u\n", IN_FROM_REG(data->in_min[offset], \ data->in_scale[offset])); \ } \ static ssize_t show_in##offset##_max(struct device *dev, struct device_attribute *attr, char *buf) \ { \ struct lm87_data *data = lm87_update_device(dev); \ return sprintf(buf, "%u\n", IN_FROM_REG(data->in_max[offset], \ data->in_scale[offset])); \ } \ static DEVICE_ATTR(in##offset##_input, S_IRUGO, \ show_in##offset##_input, NULL); show_in(0); show_in(1); show_in(2); show_in(3); show_in(4); show_in(5); show_in(6); show_in(7); static void set_in_min(struct device *dev, const char *buf, int nr) { struct i2c_client *client = to_i2c_client(dev); struct lm87_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); data->in_min[nr] = IN_TO_REG(val, data->in_scale[nr]); lm87_write_value(client, nr<6 ? LM87_REG_IN_MIN(nr) : LM87_REG_AIN_MIN(nr-6), data->in_min[nr]); mutex_unlock(&data->update_lock); } static void set_in_max(struct device *dev, const char *buf, int nr) { struct i2c_client *client = to_i2c_client(dev); struct lm87_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); data->in_max[nr] = IN_TO_REG(val, data->in_scale[nr]); lm87_write_value(client, nr<6 ? LM87_REG_IN_MAX(nr) : LM87_REG_AIN_MAX(nr-6), data->in_max[nr]); mutex_unlock(&data->update_lock); } #define set_in(offset) \ static ssize_t set_in##offset##_min(struct device *dev, struct device_attribute *attr, \ const char *buf, size_t count) \ { \ set_in_min(dev, buf, offset); \ return count; \ } \ static ssize_t set_in##offset##_max(struct device *dev, struct device_attribute *attr, \ const char *buf, size_t count) \ { \ set_in_max(dev, buf, offset); \ return count; \ } \ static DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ show_in##offset##_min, set_in##offset##_min); \ static DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ show_in##offset##_max, set_in##offset##_max); set_in(0); set_in(1); set_in(2); set_in(3); set_in(4); set_in(5); set_in(6); set_in(7); #define show_temp(offset) \ static ssize_t show_temp##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ { \ struct lm87_data *data = lm87_update_device(dev); \ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[offset-1])); \ } \ static ssize_t show_temp##offset##_low(struct device *dev, struct device_attribute *attr, char *buf) \ { \ struct lm87_data *data = lm87_update_device(dev); \ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_low[offset-1])); \ } \ static ssize_t show_temp##offset##_high(struct device *dev, struct device_attribute *attr, char *buf) \ { \ struct lm87_data *data = lm87_update_device(dev); \ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[offset-1])); \ }\ static DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ show_temp##offset##_input, NULL); show_temp(1); show_temp(2); show_temp(3); static void set_temp_low(struct device *dev, const char *buf, int nr) { struct i2c_client *client = to_i2c_client(dev); struct lm87_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); data->temp_low[nr] = TEMP_TO_REG(val); lm87_write_value(client, LM87_REG_TEMP_LOW[nr], data->temp_low[nr]); mutex_unlock(&data->update_lock); } static void set_temp_high(struct device *dev, const char *buf, int nr) { struct i2c_client *client = to_i2c_client(dev); struct lm87_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); data->temp_high[nr] = TEMP_TO_REG(val); lm87_write_value(client, LM87_REG_TEMP_HIGH[nr], data->temp_high[nr]); mutex_unlock(&data->update_lock); } #define set_temp(offset) \ static ssize_t set_temp##offset##_low(struct device *dev, struct device_attribute *attr, \ const char *buf, size_t count) \ { \ set_temp_low(dev, buf, offset-1); \ return count; \ } \ static ssize_t set_temp##offset##_high(struct device *dev, struct device_attribute *attr, \ const char *buf, size_t count) \ { \ set_temp_high(dev, buf, offset-1); \ return count; \ } \ static DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ show_temp##offset##_high, set_temp##offset##_high); \ static DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ show_temp##offset##_low, set_temp##offset##_low); set_temp(1); set_temp(2); set_temp(3); static ssize_t show_temp_crit_int(struct device *dev, struct device_attribute *attr, char *buf) { struct lm87_data *data = lm87_update_device(dev); return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_int)); } static ssize_t show_temp_crit_ext(struct device *dev, struct device_attribute *attr, char *buf) { struct lm87_data *data = lm87_update_device(dev); return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_crit_ext)); } static DEVICE_ATTR(temp1_crit, S_IRUGO, show_temp_crit_int, NULL); static DEVICE_ATTR(temp2_crit, S_IRUGO, show_temp_crit_ext, NULL); static DEVICE_ATTR(temp3_crit, S_IRUGO, show_temp_crit_ext, NULL); #define show_fan(offset) \ static ssize_t show_fan##offset##_input(struct device *dev, struct device_attribute *attr, char *buf) \ { \ struct lm87_data *data = lm87_update_device(dev); \ return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[offset-1], \ FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \ } \ static ssize_t show_fan##offset##_min(struct device *dev, struct device_attribute *attr, char *buf) \ { \ struct lm87_data *data = lm87_update_device(dev); \ return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan_min[offset-1], \ FAN_DIV_FROM_REG(data->fan_div[offset-1]))); \ } \ static ssize_t show_fan##offset##_div(struct device *dev, struct device_attribute *attr, char *buf) \ { \ struct lm87_data *data = lm87_update_device(dev); \ return sprintf(buf, "%d\n", FAN_DIV_FROM_REG(data->fan_div[offset-1])); \ } \ static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ show_fan##offset##_input, NULL); show_fan(1); show_fan(2); static void set_fan_min(struct device *dev, const char *buf, int nr) { struct i2c_client *client = to_i2c_client(dev); struct lm87_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); data->fan_min[nr] = FAN_TO_REG(val, FAN_DIV_FROM_REG(data->fan_div[nr])); lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); mutex_unlock(&data->update_lock); } /* Note: we save and restore the fan minimum here, because its value is determined in part by the fan clock divider. This follows the principle of least surprise; the user doesn't expect the fan minimum to change just because the divider changed. */ static ssize_t set_fan_div(struct device *dev, const char *buf, size_t count, int nr) { struct i2c_client *client = to_i2c_client(dev); struct lm87_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); unsigned long min; u8 reg; mutex_lock(&data->update_lock); min = FAN_FROM_REG(data->fan_min[nr], FAN_DIV_FROM_REG(data->fan_div[nr])); switch (val) { case 1: data->fan_div[nr] = 0; break; case 2: data->fan_div[nr] = 1; break; case 4: data->fan_div[nr] = 2; break; case 8: data->fan_div[nr] = 3; break; default: mutex_unlock(&data->update_lock); return -EINVAL; } reg = lm87_read_value(client, LM87_REG_VID_FAN_DIV); switch (nr) { case 0: reg = (reg & 0xCF) | (data->fan_div[0] << 4); break; case 1: reg = (reg & 0x3F) | (data->fan_div[1] << 6); break; } lm87_write_value(client, LM87_REG_VID_FAN_DIV, reg); data->fan_min[nr] = FAN_TO_REG(min, val); lm87_write_value(client, LM87_REG_FAN_MIN(nr), data->fan_min[nr]); mutex_unlock(&data->update_lock); return count; } #define set_fan(offset) \ static ssize_t set_fan##offset##_min(struct device *dev, struct device_attribute *attr, const char *buf, \ size_t count) \ { \ set_fan_min(dev, buf, offset-1); \ return count; \ } \ static ssize_t set_fan##offset##_div(struct device *dev, struct device_attribute *attr, const char *buf, \ size_t count) \ { \ return set_fan_div(dev, buf, count, offset-1); \ } \ static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ show_fan##offset##_min, set_fan##offset##_min); \ static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ show_fan##offset##_div, set_fan##offset##_div); set_fan(1); set_fan(2); static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) { struct lm87_data *data = lm87_update_device(dev); return sprintf(buf, "%d\n", data->alarms); } static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); static ssize_t show_vid(struct device *dev, struct device_attribute *attr, char *buf) { struct lm87_data *data = lm87_update_device(dev); return sprintf(buf, "%d\n", vid_from_reg(data->vid, data->vrm)); } static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid, NULL); static ssize_t show_vrm(struct device *dev, struct device_attribute *attr, char *buf) { struct lm87_data *data = dev_get_drvdata(dev); return sprintf(buf, "%d\n", data->vrm); } static ssize_t set_vrm(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct lm87_data *data = dev_get_drvdata(dev); data->vrm = simple_strtoul(buf, NULL, 10); return count; } static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm, set_vrm); static ssize_t show_aout(struct device *dev, struct device_attribute *attr, char *buf) { struct lm87_data *data = lm87_update_device(dev); return sprintf(buf, "%d\n", AOUT_FROM_REG(data->aout)); } static ssize_t set_aout(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct i2c_client *client = to_i2c_client(dev); struct lm87_data *data = i2c_get_clientdata(client); long val = simple_strtol(buf, NULL, 10); mutex_lock(&data->update_lock); data->aout = AOUT_TO_REG(val); lm87_write_value(client, LM87_REG_AOUT, data->aout); mutex_unlock(&data->update_lock); return count; } static DEVICE_ATTR(aout_output, S_IRUGO | S_IWUSR, show_aout, set_aout); static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, char *buf) { struct lm87_data *data = lm87_update_device(dev); int bitnr = to_sensor_dev_attr(attr)->index; return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); } static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 0); static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 1); static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 2); static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 3); static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 8); static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 9); static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 6); static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 7); static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 4); static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 5); static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 5); static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 6); static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 7); static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 14); static SENSOR_DEVICE_ATTR(temp3_fault, S_IRUGO, show_alarm, NULL, 15); /* * Real code */ static struct attribute *lm87_attributes[] = { &dev_attr_in1_input.attr, &dev_attr_in1_min.attr, &dev_attr_in1_max.attr, &sensor_dev_attr_in1_alarm.dev_attr.attr, &dev_attr_in2_input.attr, &dev_attr_in2_min.attr, &dev_attr_in2_max.attr, &sensor_dev_attr_in2_alarm.dev_attr.attr, &dev_attr_in3_input.attr, &dev_attr_in3_min.attr, &dev_attr_in3_max.attr, &sensor_dev_attr_in3_alarm.dev_attr.attr, &dev_attr_in4_input.attr, &dev_attr_in4_min.attr, &dev_attr_in4_max.attr, &sensor_dev_attr_in4_alarm.dev_attr.attr, &dev_attr_temp1_input.attr, &dev_attr_temp1_max.attr, &dev_attr_temp1_min.attr, &dev_attr_temp1_crit.attr, &sensor_dev_attr_temp1_alarm.dev_attr.attr, &dev_attr_temp2_input.attr, &dev_attr_temp2_max.attr, &dev_attr_temp2_min.attr, &dev_attr_temp2_crit.attr, &sensor_dev_attr_temp2_alarm.dev_attr.attr, &sensor_dev_attr_temp2_fault.dev_attr.attr, &dev_attr_alarms.attr, &dev_attr_aout_output.attr, NULL }; static const struct attribute_group lm87_group = { .attrs = lm87_attributes, }; static struct attribute *lm87_attributes_opt[] = { &dev_attr_in6_input.attr, &dev_attr_in6_min.attr, &dev_attr_in6_max.attr, &sensor_dev_attr_in6_alarm.dev_attr.attr, &dev_attr_fan1_input.attr, &dev_attr_fan1_min.attr, &dev_attr_fan1_div.attr, &sensor_dev_attr_fan1_alarm.dev_attr.attr, &dev_attr_in7_input.attr, &dev_attr_in7_min.attr, &dev_attr_in7_max.attr, &sensor_dev_attr_in7_alarm.dev_attr.attr, &dev_attr_fan2_input.attr, &dev_attr_fan2_min.attr, &dev_attr_fan2_div.attr, &sensor_dev_attr_fan2_alarm.dev_attr.attr, &dev_attr_temp3_input.attr, &dev_attr_temp3_max.attr, &dev_attr_temp3_min.attr, &dev_attr_temp3_crit.attr, &sensor_dev_attr_temp3_alarm.dev_attr.attr, &sensor_dev_attr_temp3_fault.dev_attr.attr, &dev_attr_in0_input.attr, &dev_attr_in0_min.attr, &dev_attr_in0_max.attr, &sensor_dev_attr_in0_alarm.dev_attr.attr, &dev_attr_in5_input.attr, &dev_attr_in5_min.attr, &dev_attr_in5_max.attr, &sensor_dev_attr_in5_alarm.dev_attr.attr, &dev_attr_cpu0_vid.attr, &dev_attr_vrm.attr, NULL }; static const struct attribute_group lm87_group_opt = { .attrs = lm87_attributes_opt, }; /* Return 0 if detection is successful, -ENODEV otherwise */ static int lm87_detect(struct i2c_client *new_client, struct i2c_board_info *info) { struct i2c_adapter *adapter = new_client->adapter; const char *name; u8 cid, rev; if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) return -ENODEV; if (lm87_read_value(new_client, LM87_REG_CONFIG) & 0x80) return -ENODEV; /* Now, we do the remaining detection. */ cid = lm87_read_value(new_client, LM87_REG_COMPANY_ID); rev = lm87_read_value(new_client, LM87_REG_REVISION); if (cid == 0x02 /* National Semiconductor */ && (rev >= 0x01 && rev <= 0x08)) name = "lm87"; else if (cid == 0x41 /* Analog Devices */ && (rev & 0xf0) == 0x10) name = "adm1024"; else { dev_dbg(&adapter->dev, "LM87 detection failed at 0x%02x\n", new_client->addr); return -ENODEV; } strlcpy(info->type, name, I2C_NAME_SIZE); return 0; } static int lm87_probe(struct i2c_client *new_client, const struct i2c_device_id *id) { struct lm87_data *data; int err; data = kzalloc(sizeof(struct lm87_data), GFP_KERNEL); if (!data) { err = -ENOMEM; goto exit; } i2c_set_clientdata(new_client, data); data->valid = 0; mutex_init(&data->update_lock); /* Initialize the LM87 chip */ lm87_init_client(new_client); data->in_scale[0] = 2500; data->in_scale[1] = 2700; data->in_scale[2] = (data->channel & CHAN_VCC_5V) ? 5000 : 3300; data->in_scale[3] = 5000; data->in_scale[4] = 12000; data->in_scale[5] = 2700; data->in_scale[6] = 1875; data->in_scale[7] = 1875; /* Register sysfs hooks */ if ((err = sysfs_create_group(&new_client->dev.kobj, &lm87_group))) goto exit_free; if (data->channel & CHAN_NO_FAN(0)) { if ((err = device_create_file(&new_client->dev, &dev_attr_in6_input)) || (err = device_create_file(&new_client->dev, &dev_attr_in6_min)) || (err = device_create_file(&new_client->dev, &dev_attr_in6_max)) || (err = device_create_file(&new_client->dev, &sensor_dev_attr_in6_alarm.dev_attr))) goto exit_remove; } else { if ((err = device_create_file(&new_client->dev, &dev_attr_fan1_input)) || (err = device_create_file(&new_client->dev, &dev_attr_fan1_min)) || (err = device_create_file(&new_client->dev, &dev_attr_fan1_div)) || (err = device_create_file(&new_client->dev, &sensor_dev_attr_fan1_alarm.dev_attr))) goto exit_remove; } if (data->channel & CHAN_NO_FAN(1)) { if ((err = device_create_file(&new_client->dev, &dev_attr_in7_input)) || (err = device_create_file(&new_client->dev, &dev_attr_in7_min)) || (err = device_create_file(&new_client->dev, &dev_attr_in7_max)) || (err = device_create_file(&new_client->dev, &sensor_dev_attr_in7_alarm.dev_attr))) goto exit_remove; } else { if ((err = device_create_file(&new_client->dev, &dev_attr_fan2_input)) || (err = device_create_file(&new_client->dev, &dev_attr_fan2_min)) || (err = device_create_file(&new_client->dev, &dev_attr_fan2_div)) || (err = device_create_file(&new_client->dev, &sensor_dev_attr_fan2_alarm.dev_attr))) goto exit_remove; } if (data->channel & CHAN_TEMP3) { if ((err = device_create_file(&new_client->dev, &dev_attr_temp3_input)) || (err = device_create_file(&new_client->dev, &dev_attr_temp3_max)) || (err = device_create_file(&new_client->dev, &dev_attr_temp3_min)) || (err = device_create_file(&new_client->dev, &dev_attr_temp3_crit)) || (err = device_create_file(&new_client->dev, &sensor_dev_attr_temp3_alarm.dev_attr)) || (err = device_create_file(&new_client->dev, &sensor_dev_attr_temp3_fault.dev_attr))) goto exit_remove; } else { if ((err = device_create_file(&new_client->dev, &dev_attr_in0_input)) || (err = device_create_file(&new_client->dev, &dev_attr_in0_min)) || (err = device_create_file(&new_client->dev, &dev_attr_in0_max)) || (err = device_create_file(&new_client->dev, &sensor_dev_attr_in0_alarm.dev_attr)) || (err = device_create_file(&new_client->dev, &dev_attr_in5_input)) || (err = device_create_file(&new_client->dev, &dev_attr_in5_min)) || (err = device_create_file(&new_client->dev, &dev_attr_in5_max)) || (err = device_create_file(&new_client->dev, &sensor_dev_attr_in5_alarm.dev_attr))) goto exit_remove; } if (!(data->channel & CHAN_NO_VID)) { data->vrm = vid_which_vrm(); if ((err = device_create_file(&new_client->dev, &dev_attr_cpu0_vid)) || (err = device_create_file(&new_client->dev, &dev_attr_vrm))) goto exit_remove; } data->hwmon_dev = hwmon_device_register(&new_client->dev); if (IS_ERR(data->hwmon_dev)) { err = PTR_ERR(data->hwmon_dev); goto exit_remove; } return 0; exit_remove: sysfs_remove_group(&new_client->dev.kobj, &lm87_group); sysfs_remove_group(&new_client->dev.kobj, &lm87_group_opt); exit_free: lm87_write_value(new_client, LM87_REG_CONFIG, data->config); kfree(data); exit: return err; } static void lm87_init_client(struct i2c_client *client) { struct lm87_data *data = i2c_get_clientdata(client); if (client->dev.platform_data) { data->channel = *(u8 *)client->dev.platform_data; lm87_write_value(client, LM87_REG_CHANNEL_MODE, data->channel); } else { data->channel = lm87_read_value(client, LM87_REG_CHANNEL_MODE); } data->config = lm87_read_value(client, LM87_REG_CONFIG) & 0x6F; if (!(data->config & 0x01)) { int i; /* Limits are left uninitialized after power-up */ for (i = 1; i < 6; i++) { lm87_write_value(client, LM87_REG_IN_MIN(i), 0x00); lm87_write_value(client, LM87_REG_IN_MAX(i), 0xFF); } for (i = 0; i < 2; i++) { lm87_write_value(client, LM87_REG_TEMP_HIGH[i], 0x7F); lm87_write_value(client, LM87_REG_TEMP_LOW[i], 0x00); lm87_write_value(client, LM87_REG_AIN_MIN(i), 0x00); lm87_write_value(client, LM87_REG_AIN_MAX(i), 0xFF); } if (data->channel & CHAN_TEMP3) { lm87_write_value(client, LM87_REG_TEMP_HIGH[2], 0x7F); lm87_write_value(client, LM87_REG_TEMP_LOW[2], 0x00); } else { lm87_write_value(client, LM87_REG_IN_MIN(0), 0x00); lm87_write_value(client, LM87_REG_IN_MAX(0), 0xFF); } } /* Make sure Start is set and INT#_Clear is clear */ if ((data->config & 0x09) != 0x01) lm87_write_value(client, LM87_REG_CONFIG, (data->config & 0x77) | 0x01); } static int lm87_remove(struct i2c_client *client) { struct lm87_data *data = i2c_get_clientdata(client); hwmon_device_unregister(data->hwmon_dev); sysfs_remove_group(&client->dev.kobj, &lm87_group); sysfs_remove_group(&client->dev.kobj, &lm87_group_opt); lm87_write_value(client, LM87_REG_CONFIG, data->config); kfree(data); return 0; } static struct lm87_data *lm87_update_device(struct device *dev) { struct i2c_client *client = to_i2c_client(dev); struct lm87_data *data = i2c_get_clientdata(client); mutex_lock(&data->update_lock); if (time_after(jiffies, data->last_updated + HZ) || !data->valid) { int i, j; dev_dbg(&client->dev, "Updating data.\n"); i = (data->channel & CHAN_TEMP3) ? 1 : 0; j = (data->channel & CHAN_TEMP3) ? 5 : 6; for (; i < j; i++) { data->in[i] = lm87_read_value(client, LM87_REG_IN(i)); data->in_min[i] = lm87_read_value(client, LM87_REG_IN_MIN(i)); data->in_max[i] = lm87_read_value(client, LM87_REG_IN_MAX(i)); } for (i = 0; i < 2; i++) { if (data->channel & CHAN_NO_FAN(i)) { data->in[6+i] = lm87_read_value(client, LM87_REG_AIN(i)); data->in_max[6+i] = lm87_read_value(client, LM87_REG_AIN_MAX(i)); data->in_min[6+i] = lm87_read_value(client, LM87_REG_AIN_MIN(i)); } else { data->fan[i] = lm87_read_value(client, LM87_REG_FAN(i)); data->fan_min[i] = lm87_read_value(client, LM87_REG_FAN_MIN(i)); } } j = (data->channel & CHAN_TEMP3) ? 3 : 2; for (i = 0 ; i < j; i++) { data->temp[i] = lm87_read_value(client, LM87_REG_TEMP[i]); data->temp_high[i] = lm87_read_value(client, LM87_REG_TEMP_HIGH[i]); data->temp_low[i] = lm87_read_value(client, LM87_REG_TEMP_LOW[i]); } i = lm87_read_value(client, LM87_REG_TEMP_HW_INT_LOCK); j = lm87_read_value(client, LM87_REG_TEMP_HW_INT); data->temp_crit_int = min(i, j); i = lm87_read_value(client, LM87_REG_TEMP_HW_EXT_LOCK); j = lm87_read_value(client, LM87_REG_TEMP_HW_EXT); data->temp_crit_ext = min(i, j); i = lm87_read_value(client, LM87_REG_VID_FAN_DIV); data->fan_div[0] = (i >> 4) & 0x03; data->fan_div[1] = (i >> 6) & 0x03; data->vid = (i & 0x0F) | (lm87_read_value(client, LM87_REG_VID4) & 0x01) << 4; data->alarms = lm87_read_value(client, LM87_REG_ALARMS1) | (lm87_read_value(client, LM87_REG_ALARMS2) << 8); data->aout = lm87_read_value(client, LM87_REG_AOUT); data->last_updated = jiffies; data->valid = 1; } mutex_unlock(&data->update_lock); return data; } static int __init sensors_lm87_init(void) { return i2c_add_driver(&lm87_driver); } static void __exit sensors_lm87_exit(void) { i2c_del_driver(&lm87_driver); } MODULE_AUTHOR("Jean Delvare <khali@linux-fr.org> and others"); MODULE_DESCRIPTION("LM87 driver"); MODULE_LICENSE("GPL"); module_init(sensors_lm87_init); module_exit(sensors_lm87_exit);


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