Greetings,
Completes Michiel Rook's orphaned port of this driver.
New features added:
Auto fan clock divider based on Jean Delavre's algorithm,
added limits checking and performed much testing to verify
correct operation. Removed fan speed resolution 'improver'
(bidirectional fan clock divider adjust) for Jean Delavre.
Replace the scaling macros with static inlines, cleaner.
Since development seems in limbo, this patch is against
2.6.11.7, it applies against -mm3 with a one line repair
to Makefile.
I have no idea whether libsensors can describe the algorithm
to correctly read negative voltages, but that is user-space
issue, not a driver issue.
--Grant.
---
Kconfig | 11
Makefile | 1
adm9240.c | 772 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 784 insertions(+)
diff -Nru -X dontdiff linux-2.6.11.7/drivers/i2c/chips/Kconfig linux-2.6.11.7c/drivers/i2c/chips/Kconfig
--- linux-2.6.11.7/drivers/i2c/chips/Kconfig 2005-04-15 07:38:57.000000000 +1000
+++ linux-2.6.11.7c/drivers/i2c/chips/Kconfig 2005-04-18 19:16:08.000000000 +1000
@@ -51,6 +51,17 @@
This driver can also be built as a module. If so, the module
will be called adm1031.
+config SENSORS_ADM9240
+ tristate "Analog Devices ADM9240, Dallas DS1780 and NatSemi LM81"
+ depends on I2C && EXPERIMENTAL
+ select I2C_SENSOR
+ help
+ If you say yes here you get support for Analog Devices ADM9240,
+ Dallas DS1780, National Semiconductor LM81 sensor chips.
+
+ This driver can also be built as a module. If so, the module
+ will be called adm9240.
+
config SENSORS_ASB100
tristate "Asus ASB100 Bach"
depends on I2C && EXPERIMENTAL
diff -Nru -X dontdiff linux-2.6.11.7/drivers/i2c/chips/Makefile linux-2.6.11.7c/drivers/i2c/chips/Makefile
--- linux-2.6.11.7/drivers/i2c/chips/Makefile 2005-04-15 07:38:57.000000000 +1000
+++ linux-2.6.11.7c/drivers/i2c/chips/Makefile 2005-04-18 19:16:36.000000000 +1000
@@ -11,6 +11,7 @@
obj-$(CONFIG_SENSORS_ADM1025) += adm1025.o
obj-$(CONFIG_SENSORS_ADM1026) += adm1026.o
obj-$(CONFIG_SENSORS_ADM1031) += adm1031.o
+obj-$(CONFIG_SENSORS_ADM9240) += adm9240.o
obj-$(CONFIG_SENSORS_DS1621) += ds1621.o
obj-$(CONFIG_SENSORS_EEPROM) += eeprom.o
obj-$(CONFIG_SENSORS_FSCHER) += fscher.o
diff -Nru -X dontdiff linux-2.6.11.7/drivers/i2c/chips/adm9240.c linux-2.6.11.7c/drivers/i2c/chips/adm9240.c
--- linux-2.6.11.7/drivers/i2c/chips/adm9240.c 1970-01-01 10:00:00.000000000 +1000
+++ linux-2.6.11.7c/drivers/i2c/chips/adm9240.c 2005-04-23 17:39:49.000000000 +1000
@@ -0,0 +1,772 @@
+/*
+ * adm9240.c Part of lm_sensors, Linux kernel modules for hardware
+ * monitoring
+ *
+ * Copyright (C) 1999 Frodo Looijaard <frodol at dds.nl>
+ * Philip Edelbrock <phil at netroedge.com>
+ * Copyright (C) 2003 Michiel Rook <michiel at grendelproject.nl>
+ * Copyright (C) 2005 Grant Coady <gcoady at gmail.com> with valuable
+ * guidance from Jean Delvare
+ *
+ * Driver supports Analog Devices ADM9240
+ * Dallas Semiconductor DS1780
+ * National Semiconductor LM81
+ *
+ * ADM9240 is the reference, DS1780 and LM81 are register compatibles
+ *
+ * Voltage Six inputs are scaled by chip, VID also reported
+ * Temperature Chip temperature to 0.5'C, maximum and max_hysteris
+ * Fans 2 fans, low speed alarm, automatic fan clock divider
+ * Alarms 16-bit map of active alarms
+ *
+ * Analog Out 0..1250 mV output
+ * Intrusion Chassis Intrusion, CI latch clear write only accessor
+ *
+ * Test hardware: Intel SE440BX-2 desktop motherboard --Grant
+ *
+ * LM81 extended temp reading not implemented
+ *
+ * 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/config.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/i2c-sensor.h>
+#include <linux/i2c-vid.h>
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = { 0x2c,0x2d,0x2e,0x2f, I2C_CLIENT_END };
+
+static unsigned int normal_isa[] = { I2C_CLIENT_ISA_END };
+
+/* Insmod parameters */
+SENSORS_INSMOD_3(adm9240, ds1780, lm81);
+
+/* ADM9240 registers */
+#define ADM9240_REG_MAN_ID 0x3e
+#define ADM9240_REG_DIE_REV 0x3f
+#define ADM9240_REG_CONFIG 0x40
+
+#define ADM9240_REG_IN(nr) (0x20 + (nr)) /* 0..5 */
+#define ADM9240_REG_IN_MAX(nr) (0x2b + (nr) * 2)
+#define ADM9240_REG_IN_MIN(nr) (0x2c + (nr) * 2)
+#define ADM9240_REG_FAN(nr) (0x28 + (nr)) /* 0..1 */
+#define ADM9240_REG_FAN_MIN(nr) (0x3b + (nr))
+#define ADM9240_REG_INT(nr) (0x41 + (nr))
+#define ADM9240_REG_INT_MASK(nr) (0x43 + (nr))
+#define ADM9240_REG_TEMP 0x27
+#define ADM9240_REG_TEMP_HIGH 0x39
+#define ADM9240_REG_TEMP_HYST 0x3a
+#define ADM9240_REG_ANALOG_OUT 0x19
+#define ADM9240_REG_CHASSIS_CLEAR 0x46
+#define ADM9240_REG_VID_FAN_DIV 0x47
+#define ADM9240_REG_I2C_ADDR 0x48
+#define ADM9240_REG_VID4 0x49
+#define ADM9240_REG_TEMP_CONF 0x4b
+
+/* generalised scaling with integer rounding */
+static inline int SCALE(long val, int mul, int div)
+{
+ if (val < 0)
+ return (val * mul - div / 2) / div;
+ else
+ return (val * mul + div / 2) / div;
+}
+
+/* adm9240 internally scales voltage measurements */
+static const u16 nom[6] = {2500, 2700, 3300, 5000, 12000, 2700};
+
+static inline unsigned int IN_FROM_REG(u8 reg, int n)
+{
+ return SCALE(reg, nom[n], 192);
+}
+
+static inline u8 IN_TO_REG(unsigned long val, int n)
+{
+ return SENSORS_LIMIT(SCALE(val, 192, nom[n]), 0, 255);
+}
+
+/* temperature range: -40..125, 127 disables temperature alarm */
+static inline s8 TEMP_TO_REG(long val)
+{
+ return SENSORS_LIMIT(SCALE(val, 1, 1000), -40, 127);
+}
+
+/* two fans, each with low fan speed limit */
+static inline unsigned int FAN_FROM_REG(u8 reg, u8 div)
+{
+ if (!reg) /* error */
+ return -1;
+
+ if (reg == 255) /* fan too slow, fan stopped, low limit disabled */
+ return 0;
+
+ return SCALE(1350000, 1, reg * div);
+}
+
+/* analog out 0..1250mV */
+static inline u8 AOUT_TO_REG(unsigned long val)
+{
+ return SENSORS_LIMIT(SCALE(val, 255, 1250), 0, 255);
+}
+
+static inline unsigned int AOUT_FROM_REG(u8 reg)
+{
+ return SCALE(reg, 1250, 255);
+}
+
+static int adm9240_attach_adapter(struct i2c_adapter *adapter);
+static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind);
+static void adm9240_init_client(struct i2c_client *client);
+static int adm9240_detach_client(struct i2c_client *client);
+static struct adm9240_data *adm9240_update_device(struct device *dev);
+
+/* driver data */
+static struct i2c_driver adm9240_driver = {
+ .owner = THIS_MODULE,
+ .name = "adm9240",
+ .id = I2C_DRIVERID_ADM9240,
+ .flags = I2C_DF_NOTIFY,
+ .attach_adapter = adm9240_attach_adapter,
+ .detach_client = adm9240_detach_client,
+};
+
+/* per client data */
+struct adm9240_data {
+ enum chips type;
+ struct i2c_client client;
+ struct semaphore update_lock;
+ char valid;
+ unsigned long last_updated_measure; /* fast measurement cycle */
+ unsigned long last_updated_config; /* slow config refresh cycle */
+
+ u8 in[6]; /* ro in0_input */
+ u8 in_max[6]; /* rw in0_max */
+ u8 in_min[6]; /* rw in0_min */
+ u8 fan[2]; /* ro fan1_input */
+ u8 fan_min[2]; /* rw fan1_min */
+ u8 fan_div[2]; /* rw fan1_div, read-only accessor */
+ s16 temp; /* ro temp1_input, 9-bit sign-extended */
+ s8 temp_high; /* rw temp1_max */
+ s8 temp_hyst; /* rw temp1_max_hyst */
+ u8 alarms[2]; /* ro alarms */
+ u8 intr_mask[2]; /* rw no accessor, no users? */
+ u8 analog_out; /* rw analog_out */
+ u8 vid; /* ro vid */
+ u8 vrm; /* -- vrm set on startup, no accessor */
+};
+
+/* i2c byte read/write interface */
+static int adm9240_read_value(struct i2c_client *client, u8 reg)
+{
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int adm9240_write_value(struct i2c_client *client, u8 reg, u8 value)
+{
+ return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+/*** sysfs accessors ***/
+
+/* temperature */
+#define show_temp(value,scale) \
+static ssize_t show_##value(struct device *dev, char *buf) \
+{ \
+ struct adm9240_data *data = adm9240_update_device(dev); \
+ return sprintf(buf,"%d\n",data->value * scale); \
+}
+show_temp(temp_high,1000);
+show_temp(temp_hyst,1000);
+show_temp(temp,500);
+
+#define set_temp(value, reg) \
+static ssize_t set_##value(struct device *dev, const char *buf, \
+ size_t count) \
+{ \
+ struct i2c_client *client = to_i2c_client(dev); \
+ struct adm9240_data *data = adm9240_update_device(dev); \
+ long temp = simple_strtoul(buf, NULL, 10); \
+ \
+ down(&data->update_lock); \
+ data->value = TEMP_TO_REG(temp); \
+ adm9240_write_value(client, reg, data->value); \
+ up(&data->update_lock); \
+ return count; \
+}
+
+set_temp(temp_high, ADM9240_REG_TEMP_HIGH);
+set_temp(temp_hyst, ADM9240_REG_TEMP_HYST);
+
+static DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO,
+ show_temp_high, set_temp_high);
+static DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO,
+ show_temp_hyst, set_temp_hyst);
+static DEVICE_ATTR(temp1_input, S_IRUGO, show_temp, NULL);
+
+/* voltage */
+static ssize_t show_in(struct device *dev, char *buf, int nr)
+{
+ struct adm9240_data *data = adm9240_update_device(dev);
+ return sprintf(buf, "%d\n", IN_FROM_REG(data->in[nr], nr));
+}
+
+static ssize_t show_in_min(struct device *dev, char *buf, int nr)
+{
+ struct adm9240_data *data = adm9240_update_device(dev);
+ return sprintf(buf, "%d\n", IN_FROM_REG(data->in_min[nr], nr));
+}
+
+static ssize_t show_in_max(struct device *dev, char *buf, int nr)
+{
+ struct adm9240_data *data = adm9240_update_device(dev);
+ return sprintf(buf, "%d\n", IN_FROM_REG(data->in_max[nr], nr));
+}
+
+static ssize_t set_in_min(struct device *dev, const char *buf,
+ size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm9240_data *data = i2c_get_clientdata(client);
+ unsigned long val = simple_strtoul(buf, NULL, 10);
+
+ down(&data->update_lock);
+ data->in_min[nr] = IN_TO_REG(val, nr);
+ adm9240_write_value(client, ADM9240_REG_IN_MIN(nr), data->in_min[nr]);
+ up(&data->update_lock);
+ return count;
+}
+
+static ssize_t set_in_max(struct device *dev, const char *buf,
+ size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm9240_data *data = i2c_get_clientdata(client);
+ unsigned long val = simple_strtoul(buf, NULL, 10);
+
+ down(&data->update_lock);
+ data->in_max[nr] = IN_TO_REG(val, nr);
+ adm9240_write_value(client, ADM9240_REG_IN_MAX(nr), data->in_max[nr]);
+ up(&data->update_lock);
+ return count;
+}
+
+#define show_in_offset(offset) \
+static ssize_t show_in##offset(struct device *dev, char *buf) \
+{ \
+ return show_in(dev, buf, offset); \
+} \
+static DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in##offset, NULL); \
+static ssize_t show_in##offset##_min(struct device *dev, char *buf) \
+{ \
+ return show_in_min(dev, buf, offset); \
+} \
+static ssize_t show_in##offset##_max(struct device *dev, char *buf) \
+{ \
+ return show_in_max(dev, buf, offset); \
+} \
+static ssize_t \
+set_in##offset##_min(struct device *dev, const char *buf, size_t count) \
+{ \
+ return set_in_min(dev, buf, count, offset); \
+} \
+static ssize_t \
+set_in##offset##_max(struct device *dev, const char *buf, size_t count) \
+{ \
+ return set_in_max(dev, buf, count, offset); \
+} \
+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);
+
+show_in_offset(0);
+show_in_offset(1);
+show_in_offset(2);
+show_in_offset(3);
+show_in_offset(4);
+show_in_offset(5);
+
+/* fans */
+static ssize_t show_fan(struct device *dev, char *buf, int nr)
+{
+ struct adm9240_data *data = adm9240_update_device(dev);
+ return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[nr],
+ 1 << data->fan_div[nr]));
+}
+
+static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
+{
+ struct adm9240_data *data = adm9240_update_device(dev);
+ return sprintf(buf,"%d\n", FAN_FROM_REG(data->fan_min[nr],
+ 1 << data->fan_div[nr]));
+}
+
+static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
+{
+ struct adm9240_data *data = adm9240_update_device(dev);
+ return sprintf(buf,"%d\n", 1 << data->fan_div[nr]);
+}
+
+/* write new fan div, callers must hold data->update_lock */
+static void adm9240_write_fan_div(struct i2c_client *client, int nr,
+ u8 fan_div)
+{
+ u8 reg, old, shift = (nr + 2) * 2;
+
+ reg = adm9240_read_value(client, ADM9240_REG_VID_FAN_DIV);
+ old = (reg >> shift) & 3;
+ reg &= ~(3 << shift);
+ reg |= (fan_div << shift);
+ adm9240_write_value(client, ADM9240_REG_VID_FAN_DIV, reg);
+ dev_dbg(&client->dev, "fan%d clock divider changed from %u "
+ "to %u\n", nr + 1, 1 << old, 1 << fan_div);
+}
+
+/*
+ * set fan speed low limit, three possibilities:
+ *
+ * 1 value = zero: disable fan speed low limit alarm, not change fan_div
+ *
+ * 2 value is below fan speed measurement range: set fan speed low limit to
+ * lowest possible value and enable low limit alarm, alarm asserted while
+ * fan speed cannot be measured (too slow or stopped)
+ *
+ * 3 otherwise choose fan_div and fan_min combination that fit registers,
+ * the fan speed measurement code may adjust fan_div and fan_min to
+ * make sure fan speed readings reamin available
+ */
+static ssize_t set_fan_min(struct device *dev, const char *buf,
+ size_t count, int nr)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm9240_data *data = i2c_get_clientdata(client);
+ unsigned long val = simple_strtoul(buf, NULL, 10);
+ u8 new_div;
+
+ down(&data->update_lock);
+
+ if (!val) {
+ data->fan_min[nr] = 255;
+ new_div = data->fan_div[nr];
+
+ dev_dbg(&client->dev, "fan%u low limit set disabled\n",
+ nr + 1);
+
+ } else if (val < 1350000 / (8 * 254)) {
+ new_div = 3;
+ data->fan_min[nr] = 254;
+
+ dev_dbg(&client->dev, "fan%u low limit set minimum %u\n",
+ nr + 1, FAN_FROM_REG(254, 1 << new_div));
+
+ } else {
+ unsigned int new_min = 1350000 / val;
+
+ new_div = 0;
+ while (new_min > 192 && new_div < 3) {
+ new_div++;
+ new_min /= 2;
+ }
+ if (!new_min) /* keep > 0 */
+ new_min++;
+
+ data->fan_min[nr] = new_min;
+
+ dev_dbg(&client->dev, "fan%u low limit set fan speed %u\n",
+ nr + 1, FAN_FROM_REG(new_min, 1 << new_div));
+ }
+
+ if (new_div != data->fan_div[nr]) {
+ data->fan_div[nr] = new_div;
+ adm9240_write_fan_div(client, nr, new_div);
+ }
+ adm9240_write_value(client, ADM9240_REG_FAN_MIN(nr),
+ data->fan_min[nr]);
+
+ up(&data->update_lock);
+ return count;
+}
+
+#define show_fan_offset(offset) \
+static ssize_t show_fan_##offset (struct device *dev, char *buf) \
+{ \
+return show_fan(dev, buf, offset - 1); \
+} \
+static ssize_t show_fan_##offset##_div (struct device *dev, char *buf) \
+{ \
+return show_fan_div(dev, buf, offset - 1); \
+} \
+static ssize_t show_fan_##offset##_min (struct device *dev, char *buf) \
+{ \
+return show_fan_min(dev, buf, offset - 1); \
+} \
+static ssize_t set_fan_##offset##_min (struct device *dev, \
+const char *buf, size_t count) \
+{ \
+return set_fan_min(dev, buf, count, offset - 1); \
+} \
+static DEVICE_ATTR(fan##offset##_input, S_IRUGO, \
+ show_fan_##offset, NULL); \
+static DEVICE_ATTR(fan##offset##_div, S_IRUGO, \
+ show_fan_##offset##_div, NULL); \
+static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \
+ show_fan_##offset##_min, set_fan_##offset##_min);
+
+show_fan_offset(1);
+show_fan_offset(2);
+
+/* alarms */
+static ssize_t show_alarms(struct device *dev, char *buf)
+{
+ struct adm9240_data *data = adm9240_update_device(dev);
+ return sprintf(buf, "%u\n", data->alarms[0] |
+ (data->alarms[1] << 8));
+}
+static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
+
+/* vid */
+static ssize_t show_vid(struct device *dev, char *buf)
+{
+ struct adm9240_data *data = adm9240_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);
+
+/* analog output */
+static ssize_t show_aout(struct device *dev, char *buf)
+{
+ struct adm9240_data *data = adm9240_update_device(dev);
+ return sprintf(buf, "%d\n", AOUT_FROM_REG(data->analog_out));
+}
+
+static ssize_t set_aout(struct device *dev, const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm9240_data *data = i2c_get_clientdata(client);
+ unsigned long val = simple_strtol(buf, NULL, 10);
+
+ down(&data->update_lock);
+ data->analog_out = AOUT_TO_REG(val);
+ adm9240_write_value(client, ADM9240_REG_ANALOG_OUT, data->analog_out);
+ up(&data->update_lock);
+ return count;
+}
+static DEVICE_ATTR(analog_out, S_IRUGO | S_IWUSR, show_aout, set_aout);
+
+/* Chassis Intrusion latch clear */
+static ssize_t set_ci_clear(struct device *dev, const char *buf, size_t count)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ unsigned long val = simple_strtol(buf, NULL, 10);
+
+ if (val == 1)
+ adm9240_write_value(client, ADM9240_REG_CHASSIS_CLEAR, 0x80);
+ return count;
+}
+static DEVICE_ATTR(ci_clear, S_IWUSR, NULL, set_ci_clear);
+
+
+/*** sensor chip detect and driver install ***/
+
+static int adm9240_detect(struct i2c_adapter *adapter, int address, int kind)
+{
+ struct i2c_client *new_client;
+ struct adm9240_data *data;
+ int err = 0;
+ const char *name = "";
+ u8 man_id, die_rev;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ goto exit;
+
+ if (!(data = kmalloc(sizeof(struct adm9240_data), GFP_KERNEL))) {
+ err = -ENOMEM;
+ goto exit;
+ }
+ memset(data, 0, sizeof(struct adm9240_data));
+
+ new_client = &data->client;
+ i2c_set_clientdata(new_client, data);
+ new_client->addr = address;
+ new_client->adapter = adapter;
+ new_client->driver = &adm9240_driver;
+ new_client->flags = 0;
+
+ if (kind == 0) {
+ kind = adm9240;
+ }
+
+ if (kind < 0) {
+
+ /* verify chip: reg address should match i2c address */
+ if (adm9240_read_value(new_client, ADM9240_REG_I2C_ADDR)
+ != address) {
+ dev_err(&adapter->dev, "detect fail: address match, "
+ "0x%02x\n", address);
+ goto exit_free;
+ }
+
+ /* check known chip manufacturer */
+ man_id = adm9240_read_value(new_client, ADM9240_REG_MAN_ID);
+
+ if (man_id == 0x23) {
+ kind = adm9240;
+ } else if (man_id == 0xda) {
+ kind = ds1780;
+ } else if (man_id == 0x01) {
+ kind = lm81;
+ } else {
+ dev_err(&adapter->dev, "detect fail: unknown manuf, "
+ "0x%02x\n", man_id);
+ goto exit_free;
+ }
+
+ /* successful detect, print chip info */
+ die_rev = adm9240_read_value(new_client, ADM9240_REG_DIE_REV);
+ dev_info(&adapter->dev, "found %s revision %u\n",
+ man_id == 0x23 ? "ADM9240" :
+ man_id == 0xda ? "DS1780" : "LM81", die_rev);
+ }
+
+ /* either forced or detected chip kind */
+ if (kind == adm9240) {
+ name = "adm9240";
+ } else if (kind == ds1780) {
+ name = "ds1780";
+ } else if (kind == lm81) {
+ name = "lm81";
+ }
+
+ /* fill in the remaining client fields and attach */
+ strlcpy(new_client->name, name, I2C_NAME_SIZE);
+ data->type = kind;
+ init_MUTEX(&data->update_lock);
+ if ((err = i2c_attach_client(new_client)))
+ goto exit_free;
+
+ adm9240_init_client(new_client);
+
+ /* populate sysfs filesystem */
+ device_create_file(&new_client->dev, &dev_attr_in0_input);
+ device_create_file(&new_client->dev, &dev_attr_in0_min);
+ device_create_file(&new_client->dev, &dev_attr_in0_max);
+ device_create_file(&new_client->dev, &dev_attr_in1_input);
+ device_create_file(&new_client->dev, &dev_attr_in1_min);
+ device_create_file(&new_client->dev, &dev_attr_in1_max);
+ device_create_file(&new_client->dev, &dev_attr_in2_input);
+ device_create_file(&new_client->dev, &dev_attr_in2_min);
+ device_create_file(&new_client->dev, &dev_attr_in2_max);
+ device_create_file(&new_client->dev, &dev_attr_in3_input);
+ device_create_file(&new_client->dev, &dev_attr_in3_min);
+ device_create_file(&new_client->dev, &dev_attr_in3_max);
+ device_create_file(&new_client->dev, &dev_attr_in4_input);
+ device_create_file(&new_client->dev, &dev_attr_in4_min);
+ device_create_file(&new_client->dev, &dev_attr_in4_max);
+ device_create_file(&new_client->dev, &dev_attr_in5_input);
+ device_create_file(&new_client->dev, &dev_attr_in5_min);
+ device_create_file(&new_client->dev, &dev_attr_in5_max);
+ device_create_file(&new_client->dev, &dev_attr_temp1_max);
+ device_create_file(&new_client->dev, &dev_attr_temp1_max_hyst);
+ device_create_file(&new_client->dev, &dev_attr_temp1_input);
+ device_create_file(&new_client->dev, &dev_attr_fan1_input);
+ device_create_file(&new_client->dev, &dev_attr_fan1_div);
+ device_create_file(&new_client->dev, &dev_attr_fan1_min);
+ device_create_file(&new_client->dev, &dev_attr_fan2_input);
+ device_create_file(&new_client->dev, &dev_attr_fan2_div);
+ device_create_file(&new_client->dev, &dev_attr_fan2_min);
+ device_create_file(&new_client->dev, &dev_attr_alarms);
+ device_create_file(&new_client->dev, &dev_attr_analog_out);
+ device_create_file(&new_client->dev, &dev_attr_ci_clear);
+ device_create_file(&new_client->dev, &dev_attr_cpu0_vid);
+
+ return 0;
+
+exit_free:
+ kfree(new_client);
+exit:
+ return err;
+}
+
+static int adm9240_attach_adapter(struct i2c_adapter *adapter)
+{
+ if (!(adapter->class & I2C_CLASS_HWMON))
+ return 0;
+ return i2c_detect(adapter, &addr_data, adm9240_detect);
+}
+
+static int adm9240_detach_client(struct i2c_client *client)
+{
+ int err;
+
+ if ((err = i2c_detach_client(client))) {
+ dev_err(&client->dev, "Client deregistration failed, "
+ "client not detached.\n");
+ return err;
+ }
+
+ kfree(i2c_get_clientdata(client));
+ return 0;
+}
+
+/*
+ * if we find chip is running, report config and mode, otherwise we open
+ * out the limits to prevent alarms and set to 'default' interrupt mode
+ * which seems the only method to get a temperature alarm status from chip
+ */
+static void adm9240_init_client(struct i2c_client *client)
+{
+ struct adm9240_data *data = i2c_get_clientdata(client);
+ u8 conf = adm9240_read_value(client, ADM9240_REG_CONFIG);
+ u8 mode = adm9240_read_value(client, ADM9240_REG_TEMP_CONF) & 3;
+
+ data->vrm = i2c_which_vrm(); /* need this to report vid as mV */
+
+ if (conf & 1) {
+ dev_info(&client->dev, "%s running: conf 0x%02x mode %u\n",
+ client->name, conf, mode);
+ } else {
+ int i;
+
+ for (i = 1; i < 6; i++) {
+ adm9240_write_value(client,
+ ADM9240_REG_IN_MIN(i), 0);
+ adm9240_write_value(client,
+ ADM9240_REG_IN_MAX(i), 255);
+ }
+ adm9240_write_value(client, ADM9240_REG_FAN_MIN(0), 255);
+ adm9240_write_value(client, ADM9240_REG_FAN_MIN(1), 255);
+ adm9240_write_value(client, ADM9240_REG_TEMP_HIGH, 127);
+ adm9240_write_value(client, ADM9240_REG_TEMP_HYST, 127);
+ adm9240_write_value(client, ADM9240_REG_TEMP_CONF, 0);
+ adm9240_write_value(client, ADM9240_REG_CONFIG, 1);
+
+ dev_info(&client->dev, "%s start: old conf 0x%02x mode 0\n",
+ client->name, conf);
+ }
+}
+
+static struct adm9240_data *adm9240_update_device(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct adm9240_data *data = i2c_get_clientdata(client);
+ int i;
+
+ down(&data->update_lock);
+
+ /* minimum measurement cycle: 1.75 seconds */
+ if (time_after(jiffies, data->last_updated_measure + (HZ * 7 / 4))
+ || !data->valid) {
+
+ for (i = 0; i < 6; i++) /* read voltages */
+ {
+ data->in[i] = adm9240_read_value(client,
+ ADM9240_REG_IN(i));
+ }
+ for (i = 0; i < 2; i++) /* read fans */
+ {
+ data->fan[i] = adm9240_read_value(client,
+ ADM9240_REG_FAN(i));
+
+ /* adjust fan clock divider upwards when fan speed
+ * measurement overflows, adjust fan_min too */
+ if (data->fan[i] == 255 && data->fan_div[i] < 3) {
+
+ adm9240_write_fan_div(client, i,
+ ++data->fan_div[i]);
+
+ if (data->fan_min[i] > 1 && /* keep > 0 */
+ data->fan_min[i] < 255)
+ data->fan_min[i] /= 2;
+ }
+ }
+ for (i = 0; i < 2; i++) /* read alarms */
+ {
+ data->alarms[i] = adm9240_read_value(client,
+ ADM9240_REG_INT(i));
+ }
+ /* read temperature: assume temperature changes less than
+ * 0.5'C per two measurement cycles thus ignore possible
+ * but very unlikely aliasing error on lsb reading. --Grant */
+ data->temp = ((adm9240_read_value(client,
+ ADM9240_REG_TEMP) << 8) |
+ adm9240_read_value(client,
+ ADM9240_REG_TEMP_CONF)) / 128;
+
+ data->last_updated_measure = jiffies;
+ }
+
+ /* minimum config reading cycle: 300 seconds */
+ if (time_after(jiffies, data->last_updated_config + (HZ * 300))
+ || !data->valid) {
+
+ for (i = 0; i < 6; i++)
+ {
+ data->in_min[i] = adm9240_read_value(client,
+ ADM9240_REG_IN_MIN(i));
+ data->in_max[i] = adm9240_read_value(client,
+ ADM9240_REG_IN_MAX(i));
+ }
+ for (i = 0; i < 2; i++)
+ {
+ data->fan_min[i] = adm9240_read_value(client,
+ ADM9240_REG_FAN_MIN(i));
+ data->intr_mask[i] = adm9240_read_value(client,
+ ADM9240_REG_INT_MASK(i));
+ }
+ data->temp_high = adm9240_read_value(client,
+ ADM9240_REG_TEMP_HIGH);
+ data->temp_hyst = adm9240_read_value(client,
+ ADM9240_REG_TEMP_HYST);
+
+ /* read fan divs and 5-bit VID */
+ i = adm9240_read_value(client,ADM9240_REG_VID_FAN_DIV);
+ data->fan_div[0] = (i >> 4) & 3;
+ data->fan_div[1] = (i >> 6) & 3;
+ data->vid = i & 0x0f;
+ data->vid |= (adm9240_read_value(client,
+ ADM9240_REG_VID4) & 1) << 4;
+ /* read analog out */
+ data->analog_out = adm9240_read_value(client,
+ ADM9240_REG_ANALOG_OUT);
+
+ data->last_updated_config = jiffies;
+ data->valid = 1;
+ }
+ up(&data->update_lock);
+ return data;
+}
+
+static int __init sensors_adm9240_init(void)
+{
+ return i2c_add_driver(&adm9240_driver);
+}
+
+static void __exit sensors_adm9240_exit(void)
+{
+ i2c_del_driver(&adm9240_driver);
+}
+
+MODULE_AUTHOR("Michiel Rook <michiel at grendelproject.nl>, "
+ "Grant Coady <gcoady at gmail.com> and others");
+MODULE_DESCRIPTION("ADM9240/DS1780/LM81 driver");
+MODULE_LICENSE("GPL");
+
+module_init(sensors_adm9240_init);
+module_exit(sensors_adm9240_exit);
+
