Greetings,
Completing port of adm9240 Michiel Rool started. Much testing
of automatic fan clock divider operation, fan_div no longer
writable from user-space. fan_div read accessor left in for
now so it does not break libsensors tools.
Development on 2.6.11.7 with Intel SE440BX-2 mainboard.
Compile test on 2.6.12-rc2-mm3.
Signed-off-by: Grant Coady <gcoady at gmail.com>
diff -ruN -X dontdiff-osdl linux-2.6.12-rc2-mm3/drivers/i2c/chips/Kconfig linux-2.6.12-rc2-mm3g/drivers/i2c/chips/Kconfig
--- linux-2.6.12-rc2-mm3/drivers/i2c/chips/Kconfig 2005-04-11 20:54:56.000000000 +1000
+++ linux-2.6.12-rc2-mm3g/drivers/i2c/chips/Kconfig 2005-04-14 08:18:47.000000000 +1000
@@ -51,6 +51,18 @@
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,
+ and compatible Dallas DS1780 and 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 -ruN -X dontdiff-osdl linux-2.6.12-rc2-mm3/drivers/i2c/chips/Makefile linux-2.6.12-rc2-mm3g/drivers/i2c/chips/Makefile
--- linux-2.6.12-rc2-mm3/drivers/i2c/chips/Makefile 2005-04-11 20:54:56.000000000 +1000
+++ linux-2.6.12-rc2-mm3g/drivers/i2c/chips/Makefile 2005-04-14 08:19:20.000000000 +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-$(CONFIG_SENSORS_DS1337) += ds1337.o
obj-$(CONFIG_SENSORS_DS1621) += ds1621.o
obj-$(CONFIG_SENSORS_EEPROM) += eeprom.o
diff -ruN -X dontdiff-osdl linux-2.6.12-rc2-mm3/drivers/i2c/chips/adm9240.c linux-2.6.12-rc2-mm3g/drivers/i2c/chips/adm9240.c
--- linux-2.6.12-rc2-mm3/drivers/i2c/chips/adm9240.c 1970-01-01 10:00:00.000000000 +1000
+++ linux-2.6.12-rc2-mm3g/drivers/i2c/chips/adm9240.c 2005-04-14 08:18:47.000000000 +1000
@@ -0,0 +1,740 @@
+/*
+ * 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
+ * Analog Out A o..1250 mV output
+ * Chassis Int. Chassis Intrusion, CI latch clear interface
+ * Alarms 16-bit map of active alarm
+ *
+ * Test hardware: Intel SE440BX-2 desktop motherboard
+ *
+ * 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 integer scaling with rounding (value, multiplier, divisor) */
+#define USCALE(v,m,d) (((m) * (v) + (d) / 2) / (d))
+#define SCALE(v,m,d) ((v) < 0 ? ((m) * (v) - (d) / 2) / (d) : \
+ ((m) * (v) + (d) / 2) / (d))
+
+/* adm9240 does internal voltage scaling */
+static const u16 nom[6] = {2500, 2700, 3300, 5000, 12000, 2700};
+
+#define IN_FROM_REG(reg,n) (USCALE((reg), nom[n], 192))
+#define IN_TO_REG(val,n) (SENSORS_LIMIT(\
+ USCALE((val), 192, nom[n]), 0, 255))
+
+/* temperature limits clamped to chip -ve = -40, 127 = disable */
+#define TEMP_TO_REG(val) (SENSORS_LIMIT(\
+ SCALE((val), 1, 1000), -40, 127))
+
+/* two fans, auto fan clock divider */
+#define FAN_FROM_REG(reg,div) ((reg) == 255 || (reg) == 0 ? 0 : \
+ USCALE(1350000, 1, (reg) * (div)))
+
+/* analog out */
+#define AOUT_TO_REG(val) (SENSORS_LIMIT(\
+ USCALE((val), 255, 1250), 0, 255))
+
+/* interface */
+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;
+ unsigned long last_updated_slow;
+
+ 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 to user */
+ s16 temp; /* ro temp1_input */
+ s8 temp_high; /* rw temp1_max */
+ s8 temp_hyst; /* rw temp1_max_hyst */
+ u8 alarms[2]; /* ro alarms */
+ u8 intr_mask[2]; /* rw FIXME this is useless, remove? */
+ u8 analog_out; /* rw analog_out */
+ u8 vid; /* ro vid */
+ u8 vrm; /* -- vrm set on startup */
+};
+
+/* 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);
+}
+
+/* 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]);
+}
+
+/* callers must hold data->update_lock */
+static void adm9240_write_fan_div(struct i2c_client *client,
+ int nr, u8 fan_div)
+{
+ u8 reg, old;
+
+ reg = adm9240_read_value(client, ADM9240_REG_VID_FAN_DIV);
+ if (nr == 0) {
+ old = (reg >> 4) & 3;
+ reg &= 0xcf;
+ reg |= (fan_div << 4);
+ } else {
+ old = (reg >> 6) & 3;
+ reg &= 0x3f;
+ reg |= (fan_div << 6);
+ }
+ adm9240_write_value(client, ADM9240_REG_VID_FAN_DIV, reg);
+ dev_dbg(&client->dev, "autoX fan%u old %u new %u fan_div changed\n",
+ nr + 1, 1 << old, 1 << fan_div);
+}
+
+/* automatic fan clock divider selection when user sets fan_min */
+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);
+
+ down(&data->update_lock);
+
+ dev_dbg(&client->dev, "auto? fan%u div %u min %3u val %5ld spd %u\n",
+ nr + 1, 1 << data->fan_div[nr],
+ data->fan_min[nr],val,data->fan[nr]);
+
+ if (val <= 1350000 / (8 * 254)) {
+ data->fan_min[nr] = 255; /* too low, disable alarm */
+ dev_dbg(&client->dev, "auto! fan%u div %u min %3u too low\n",
+ nr + 1, 1 << data->fan_div[nr],
+ data->fan_min[nr]);
+ } else {
+ /* calculate optimum fan clock divider to suit fan_min */
+ unsigned int new_min = 1350000U / val;
+ u8 new_div = 0;
+
+ while (new_min > 192 && new_div < 3) {
+ new_div++;
+ new_min++;
+ new_min >>= 1;
+ }
+ dev_dbg(&client->dev, "auto- fan%u div %u min %3u\n",
+ nr + 1, 1 << new_div, new_min);
+ data->fan_min[nr] = new_min;
+
+ 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", USCALE(data->analog_out, 1250, 255));
+}
+
+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);
+ long val = simple_strtol(buf, NULL, 10); /* keep signed */
+
+ 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 detection */
+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, config;
+
+ 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;
+ dev_dbg(&adapter->dev, "detect forced\n");
+ }
+
+ if (kind < 0) {
+
+ /* verify chip: reg address should match i2c address */
+ if (adm9240_read_value(new_client, ADM9240_REG_I2C_ADDR)
+ != address) {
+ dev_dbg(&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_dbg(&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);
+ config = adm9240_read_value(new_client, ADM9240_REG_CONFIG);
+ dev_info(&adapter->dev, "found: man_id=0x%02X, "
+ "die_rev=0x%02X, "
+ "config=0x%02X\n",
+ man_id, die_rev, config);
+ }
+
+ /* 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_cpu0_vid);
+ 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_alarms);
+
+ 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;
+}
+
+static void adm9240_init_client(struct i2c_client *client)
+{
+ struct adm9240_data *data = i2c_get_clientdata(client);
+ u8 config = adm9240_read_value(client, ADM9240_REG_CONFIG);
+
+ data->vrm = i2c_which_vrm(); /* need this to report vid as mV */
+
+ /*
+ * Not touching the chip may result in no temperature alarm status
+ * being reported, wait and see if problems reported? Solution may
+ * be to provide a config accessor or chip init function. --Grant
+ */
+ if (config & 1) { /* chip is running, no touch anything */
+ dev_dbg(&client->dev, "%s running, config is 0x%02x\n",
+ client->name, config);
+ } else {
+ int i;
+
+ /* open all limits to extremes to disable alarms */
+ 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);
+ }
+ for (i = 0; i < 2; i++) {
+ adm9240_write_value(client, ADM9240_REG_FAN_MIN(i),
+ 255);
+ }
+ adm9240_write_value(client, ADM9240_REG_TEMP_HIGH, 127);
+ adm9240_write_value(client, ADM9240_REG_TEMP_HYST, 127);
+
+ /* set default temp. interrupt mode so alarm status set */
+ adm9240_write_value(client, ADM9240_REG_TEMP_CONF, 0x00);
+
+ /* this goes last, no h/w interrupt, start measuring */
+ adm9240_write_value(client, ADM9240_REG_CONFIG, 0x01);
+ dev_dbg(&client->dev, "%s stopped, starting comparator mode\n",
+ client->name);
+ }
+}
+
+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);
+ u8 i;
+
+ down(&data->update_lock);
+
+ /* short lockout for measurement readings, a little under 2 seconds */
+ if (!data->valid || time_after(jiffies, data->last_updated
+ + (HZ * 5 / 4))) {
+
+ 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 and alarms */
+ {
+ data->fan[i] = adm9240_read_value(client,
+ ADM9240_REG_FAN(i));
+
+ /* if fan_min off: auto fan clock divider adjust */
+ if (data->fan_min[i] == 255) {
+ int x = 0;
+
+ if (data->fan[i] > 192 &&
+ data->fan_div[i] < 3) {
+ x++;
+ }
+ if (data->fan[i] < 96 &&
+ data->fan_div[i] > 0) {
+ x--;
+ }
+ if (x != 0) {
+ data->fan_div[i] += x;
+ adm9240_write_fan_div(client, i,
+ data->fan_div[i]);
+ }
+ }
+ 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
+ * aliasing error on lsb reading.
+ */
+ data->temp = ((adm9240_read_value(client,
+ ADM9240_REG_TEMP) << 8) |
+ adm9240_read_value(client,
+ ADM9240_REG_TEMP_CONF)) / 128;
+ data->last_updated = jiffies;
+ }
+
+ /* longer lockout between reading control settings */
+ if (!data->valid || time_after(jiffies, data->last_updated_slow
+ + (HZ * 600))) {
+
+ 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) & 0x03;
+ data->fan_div[1] = (i >> 6) & 0x03;
+ data->vid = i & 0x0f;
+ data->vid |= (adm9240_read_value(client, ADM9240_REG_VID4)
+ & 0x01) << 4;
+ /* read analog out */
+ data->analog_out = adm9240_read_value(client,
+ ADM9240_REG_ANALOG_OUT);
+ data->last_updated_slow = 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> and "
+ "Grant Coady <gcoady at gmail.com>");
+MODULE_DESCRIPTION("ADM9240 driver");
+MODULE_LICENSE("GPL");
+
+module_init(sensors_adm9240_init);
+module_exit(sensors_adm9240_exit);
+
