: hwmon - new chip driver for TI ADS7828 A-D

1/1

+    tristate "Texas Instruments ADS7828"
+    depends on I2C && EXPERIMENTAL
+    help
 obj-$(CONFIG_SENSORS_ADM1029)    += adm1029.o
 obj-$(CONFIG_SENSORS_ADM1031)    += adm1031.o
 obj-$(CONFIG_SENSORS_ADM9240)    += adm9240.o
+obj-$(CONFIG_SENSORS_ADS7828)    += ads7828.o
+    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.
+    struct i2c_client client;
+    struct class_device *class_dev;
+    struct mutex update_lock; /* mutex protect updates */
+    char valid; /* !=0 if following fields are valid */
+    unsigned long last_updated; /* In jiffies */
+    u16 adc_input[ADS7828_NCH]; /* ADS7828_NCH 12bit samples */
+    },
+    .id = I2C_DRIVERID_ADS7828,
+    .attach_adapter = ads7828_attach_adapter,
+    .detach_client = ads7828_detach_client,
+    struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+    struct ads7828_data *data = ads7828_update_device(dev);
+    /* Print value (in mv as specified in sysctl-interface 
+    &sensor_dev_attr_in0_input.dev_attr.attr,
+    &sensor_dev_attr_in1_input.dev_attr.attr,
+    &sensor_dev_attr_in2_input.dev_attr.attr,
+    &sensor_dev_attr_in3_input.dev_attr.attr,
+    &sensor_dev_attr_in4_input.dev_attr.attr,
+    &sensor_dev_attr_in5_input.dev_attr.attr,
+    &sensor_dev_attr_in6_input.dev_attr.attr,
+    &sensor_dev_attr_in7_input.dev_attr.attr,
+    NULL
+    struct i2c_client *new_client;
+    struct ads7828_data *data;
+    int err = 0, ch = 0;
+    const char *name = "";
+    u8 cmd;
+    u16 in_data;
+    new_client = &data->client;
+    i2c_set_clientdata(new_client, data);
+    new_client->addr = address;
+    new_client->adapter = adapter;
+    new_client->driver = &ads7828_driver;
+    new_client->flags = 0;
+    - Read from the 8 channel addresses
+    - Check the top 4 bits of each result are not set (12 data bits)
+    */
+    if (kind < 0) {
+        for (ch = 0; ch < ADS7828_NCH; ch++) {
+            /* cmd byte C2,C1,C0 - see datasheet */
+            cmd = (((ch>>1) | (ch&0x01)<<2)<<4);
+            cmd |= ads7828_cmd_byte;
+            in_data = ads7828_read_value(new_client, cmd);
+            if (in_data & 0xF000) {
+                printk(KERN_DEBUG
+                "%s : Doesn't look like an ads7828 device\n",
+                __FUNCTION__);
+                goto exit_free;
+    /* Fill in the remaining client fields, put it into the global list */
+    strlcpy(new_client->name, name, I2C_NAME_SIZE);
+    data->valid = 0;
+    mutex_init(&data->update_lock);
+
+    /* Tell the I2C layer a new client has arrived */
+    err = i2c_attach_client(new_client);
+    if (err)
+        goto exit_free;
+
+    /* Register sysfs hooks */
+    err = sysfs_create_group(&new_client->dev.kobj, &ads7828_group);
+    if (err)
+    struct ads7828_data *data = i2c_get_clientdata(client);
+    hwmon_device_unregister(data->class_dev);
+    sysfs_remove_group(&client->dev.kobj, &ads7828_group);
+    i2c_detach_client(client);
+    kfree(i2c_get_clientdata(client));
+    return 0;
+    struct i2c_client *client = to_i2c_client(dev);
+    struct ads7828_data *data = i2c_get_clientdata(client);
+    unsigned int cmd, ch;
+            /* cmd byte C2,C1,C0 - see datasheet */
+            cmd = (((ch>>1) | (ch&0x01)<<2)<<4);
+            cmd |= ads7828_cmd_byte;
+            data->adc_input[ch] = ads7828_read_value(client, cmd);
+        }
+        data->last_updated = jiffies;
+        data->valid = 1;
@@ -530,6 +530,16 @@ config SENSORS_THMC50
       This driver can also be built as a module.  If so, the module
       will be called thmc50.
 
+config SENSORS_ADS7828
+    tristate "Texas Instruments ADS7828"
+    depends on I2C && EXPERIMENTAL

+static int ads7828_attach_adapter(struct i2c_adapter *adapter);
+static int ads7828_detect(struct i2c_adapter *adapter, int address, int 

+static void ads7828_init_client(struct i2c_client *client);
+static int ads7828_detach_client(struct i2c_client *client);
+static struct ads7828_data *ads7828_update_device(struct device *dev);
+static u16 ads7828_read_value(struct i2c_client *client, u8 reg);

+/* This is the driver that will be inserted */
+static struct i2c_driver ads7828_driver = {
+    .driver = {
+        .name = "ads7828",
+    },
+    .id = I2C_DRIVERID_ADS7828,
+    .attach_adapter = ads7828_attach_adapter,
+    .detach_client = ads7828_detach_client,
+};
+
+static ssize_t show_in(struct device *dev, struct device_attribute *da,
+    char *buf)
+{
+    struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+    struct ads7828_data *data = ads7828_update_device(dev);
+    /* Print value (in mv as specified in sysctl-interface 

+    return sprintf(buf, "%d\n", (data->adc_input[attr->index] *
+        ads7828_lsb_resol)/1000);
+}
+
+#define in_reg(offset)\
+static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in,\
+    NULL, offset);
+
+in_reg(0);
+in_reg(1);
+in_reg(2);

+in_reg(3);
+in_reg(4);
+in_reg(5);
+in_reg(6);
+in_reg(7);
+
+static int ads7828_attach_adapter(struct i2c_adapter *adapter)
+{
+    if (!(adapter->class & I2C_CLASS_HWMON))
+        return 0;

+    return i2c_probe(adapter, &addr_data, ads7828_detect);
+}
+
+static struct attribute *ads7828_attributes[] = {
+    &sensor_dev_attr_in0_input.dev_attr.attr,
+    &sensor_dev_attr_in1_input.dev_attr.attr,
+    &sensor_dev_attr_in2_input.dev_attr.attr,
+    &sensor_dev_attr_in3_input.dev_attr.attr,
+    &sensor_dev_attr_in4_input.dev_attr.attr,
+    &sensor_dev_attr_in5_input.dev_attr.attr,
+    &sensor_dev_attr_in6_input.dev_attr.attr,
+    &sensor_dev_attr_in7_input.dev_attr.attr,
+    NULL
+};
+
+static const struct attribute_group ads7828_group = {
+    .attrs = ads7828_attributes,
+};
+
+/* This function is called by i2c_detect */
+static int ads7828_detect(struct i2c_adapter *adapter, int address, int 

+{
+    struct i2c_client *new_client;
+    struct ads7828_data *data;
+    int err = 0, ch = 0;
+    const char *name = "";
+    u8 cmd;
+    u16 in_data;
+
+    /* Check we have a valid client */
+    if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
+                         I2C_FUNC_SMBUS_WORD_DATA))
+        goto exit;

+
+    /* OK. For now, we presume we have a valid client. We now create the
+         client structure, even though we cannot fill it completely yet.
+         But it allows us to access ads7828_read_value. */
+    data = kmalloc(sizeof(struct ads7828_data), GFP_KERNEL);
+    if (!data)
+        err = -ENOMEM;
+        goto exit;
+    }
+    memset(data, 0, sizeof(struct ads7828_data));

+    new_client = &data->client;
+    i2c_set_clientdata(new_client, data);
+    new_client->addr = address;
+    new_client->adapter = adapter;
+    new_client->driver = &ads7828_driver;
+    new_client->flags = 0;
+
+    /* Perform local initialisation */
+    ads7828_init_client(new_client);
+
+    /* Now, we do the remaining detection. There is no identification
+    dedicated register so attempt to sanity check using knowledge of 

+    - Read from the 8 channel addresses
+    - Check the top 4 bits of each result are not set (12 data bits)
+    */
+    if (kind < 0) {
+        for (ch = 0; ch < ADS7828_NCH; ch++) {
+            /* cmd byte C2,C1,C0 - see datasheet */
+            cmd = (((ch>>1) | (ch&0x01)<<2)<<4);
+            cmd |= ads7828_cmd_byte;
+            in_data = ads7828_read_value(new_client, cmd);
+            if (in_data & 0xF000) {
+                printk(KERN_DEBUG
+                "%s : Doesn't look like an ads7828 device\n",
+                __FUNCTION__);
+                goto exit_free;
+            }
+        }
+    }
+
+    /* Determine the chip type - only one kind supported! */
+    if (kind <= 0)
+        kind = ads7828;
+
+    if (kind = ads7828)
+        name = "ads7828";
+
+    /* Fill in the remaining client fields, put it into the global list */
+    strlcpy(new_client->name, name, I2C_NAME_SIZE);
+    data->valid = 0;
+    mutex_init(&data->update_lock);
+
+    /* Tell the I2C layer a new client has arrived */
+    err = i2c_attach_client(new_client);
+    if (err)
+        goto exit_free;
+
+    /* Register sysfs hooks */
+    err = sysfs_create_group(&new_client->dev.kobj, &ads7828_group);
+    if (err)
+        goto exit_detach;
+
+    data->class_dev = hwmon_device_register(&new_client->dev);
+    if (IS_ERR(data->class_dev)) {
+        err = PTR_ERR(data->class_dev);
+        goto exit_remove;
+    }
+
+    return 0;
+
+exit_remove:
+    sysfs_remove_group(&new_client->dev.kobj, &ads7828_group);
+exit_detach:
+    i2c_detach_client(new_client);
+exit_free:
+    kfree(data);
+exit:
+    return err;
+}

 
...
 
+static struct ads7828_data *ads7828_update_device(struct device *dev)
+{
+    struct i2c_client *client = to_i2c_client(dev);
+    struct ads7828_data *data = i2c_get_clientdata(client);
+    unsigned int cmd, ch;
+
+    mutex_lock(&data->update_lock); /* LOCK */

+    if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
+            || !data->valid) {
+        dev_dbg(&client->dev, "Starting ads7828 update\n");
+
+        for (ch = 0; ch < ADS7828_NCH; ch++) {

+            /* cmd byte C2,C1,C0 - see datasheet */
+            cmd = (((ch>>1) | (ch&0x01)<<2)<<4);
+            cmd |= ads7828_cmd_byte;
+            data->adc_input[ch] = ads7828_read_value(client, cmd);
+        }
+        data->last_updated = jiffies;
+        data->valid = 1;
+    }
+
+    mutex_unlock(&data->update_lock); /* UNLOCK */

+    return data;
+}
+
+static int __init sensors_ads7828_init(void)
+{
+    return i2c_add_driver(&ads7828_driver);
+}
+
+static void __exit sensors_ads7828_exit(void)
+{
+    i2c_del_driver(&ads7828_driver);
+}
+
+MODULE_AUTHOR("Steve Hardy <[email protected]");
+MODULE_DESCRIPTION("ADS7828 driver");
+MODULE_LICENSE("GPL");
+
+module_init(sensors_ads7828_init);
+module_exit(sensors_ads7828_exit);

@@ -161,6 +161,7 @@
 #define I2C_DRIVERID_FSCHER 1046
 #define I2C_DRIVERID_W83L785TS 1047
 #define I2C_DRIVERID_OV7670 1048    /* Omnivision 7670 camera */
+#define I2C_DRIVERID_ADS7828 1049

+static int ads7828_attach_adapter(struct i2c_adapter *adapter);
+static int ads7828_detect(struct i2c_adapter *adapter, int address, int 

+static void ads7828_init_client(struct i2c_client *client);
+static int ads7828_detach_client(struct i2c_client *client);
+static struct ads7828_data *ads7828_update_device(struct device *dev);
+static u16 ads7828_read_value(struct i2c_client *client, u8 reg);

+static int ads7828_attach_adapter(struct i2c_adapter *adapter)
+{
+    if (!(adapter->class & I2C_CLASS_HWMON))
+        return 0;

+static int ads7828_attach_adapter(struct i2c_adapter *adapter)
+{
+    if (!(adapter->class & I2C_CLASS_HWMON))
+        return 0;

Jean Delvare

_______________________________________________
lm-sensors mailing list
[email protected]
http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
@@ -530,6 +530,16 @@ config SENSORS_THMC50
       This driver can also be built as a module.  If so, the module
       will be called thmc50.
 
+config SENSORS_ADS7828
+    tristate "Texas Instruments ADS7828"
+    depends on I2C && EXPERIMENTAL
+    help
+      If you say yes here you get support for Texas Instruments ADS7828
+      12-bit 8-channel ADC device

+
+      This driver can also be built as a module.  If so, the module
+      will be called ads7828

+
 config SENSORS_VIA686A
     tristate "VIA686A"
     depends on PCI

@@ -0,0 +1,304 @@
+/*
+    ads7828.c - lm_sensors driver for ads7828 12bit 8ch ADC
+    (C) 2007 EADS Astrium
+
+    This driver is based on the lm75 and other lm_sensors/hwmon drivers
+
+    Written by Steve Hardy <[email protected]>
+
+    Datasheet available at : http://focus.ti.com/lit/ds/symlink/ads7828.pdf
+
+    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/err.h>
+#include <linux/mutex.h>
+
+/* Addresses to scan */
+static unsigned short normal_i2c[] = { 0x48, 0x49, 0x4a, 0x4b,
+    I2C_CLIENT_END };
+
+/* Insmod parameters */
+I2C_CLIENT_INSMOD_1(ads7828);
+
+/* The ADS7828 registers */
+#define ADS7828_NCH 8 /* 8 channels of 12bit A-D supported */
+#define ADS7828_CMD_SD_SE 0x80 /* Single ended inputs */
+#define ADS7828_CMD_SD_DIFF 0x00 /* Differential inputs */
+#define ADS7828_CMD_PD0 0x0 /* Power Down between A-D conversions */
+#define ADS7828_CMD_PD1 0x04 /* Internal ref OFF && A-D ON */
+#define ADS7828_CMD_PD2 0x08 /* Internal ref ON && A-D OFF */
+#define ADS7828_CMD_PD3 0x0C /* Internal ref ON && A-D ON */
+#define ADS7828_INT_VREF 2500 /* Internal vref is 2.5v, 2500mV */
+

+/* module parameters */
+static int ads7828_se_input = 1; /* Default is SE, 0 = diff */
+static int ads7828_int_vref = 1; /* Default is internal ref ON */
+static int ads7828_vref = ADS7828_INT_VREF; /* set if vref != 2.5v */
+module_param(ads7828_se_input, bool, S_IRUGO);
+module_param(ads7828_int_vref, bool, S_IRUGO);
+module_param(ads7828_vref, int, S_IRUGO);
+
+static u8 ads7828_cmd_byte; /* cmd byte without channel bits */
+static unsigned int ads7828_lsb_resol; /* resolution of the ADC sample lsb */

+
+/* Each client has this additional data */
+struct ads7828_data {
+    struct i2c_client client;
+    struct class_device *class_dev;
+    struct mutex update_lock; /* mutex protect updates */
+    char valid; /* !=0 if following fields are valid */
+    unsigned long last_updated; /* In jiffies */
+    u16 adc_input[ADS7828_NCH]; /* ADS7828_NCH 12bit samples */
+};
+
+static int ads7828_attach_adapter(struct i2c_adapter *adapter);
+static int ads7828_detect(struct i2c_adapter *adapter, int address, int 

+static void ads7828_init_client(struct i2c_client *client);

+static int ads7828_detach_client(struct i2c_client *client);
+static struct ads7828_data *ads7828_update_device(struct device *dev);
+static u16 ads7828_read_value(struct i2c_client *client, u8 reg);
+
+/* This is the driver that will be inserted */
+static struct i2c_driver ads7828_driver = {
+    .driver = {
+        .name = "ads7828",
+    },
+    .id = I2C_DRIVERID_ADS7828,

+    .attach_adapter = ads7828_attach_adapter,
+    .detach_client = ads7828_detach_client,
+};
+
+static ssize_t show_in(struct device *dev, struct device_attribute *da,
+    char *buf)
+{
+    struct sensor_device_attribute *attr = to_sensor_dev_attr(da);
+    struct ads7828_data *data = ads7828_update_device(dev);
+    /* Print value (in mv as specified in sysctl-interface documentation) */

+    return sprintf(buf, "%d\n", (data->adc_input[attr->index] *
+        ads7828_lsb_resol)/1000);
+}
+
+#define in_reg(offset)\
+static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, show_in,\
+    NULL, offset);
+
+in_reg(0);
+in_reg(1);
+in_reg(2);
+in_reg(3);
+in_reg(4);
+in_reg(5);
+in_reg(6);
+in_reg(7);
+
+static int ads7828_attach_adapter(struct i2c_adapter *adapter)
+{
+    if (!(adapter->class & I2C_CLASS_HWMON))
+        return 0;
+    return i2c_probe(adapter, &addr_data, ads7828_detect);
+}
+
+static struct attribute *ads7828_attributes[] = {
+    &sensor_dev_attr_in0_input.dev_attr.attr,
+    &sensor_dev_attr_in1_input.dev_attr.attr,
+    &sensor_dev_attr_in2_input.dev_attr.attr,
+    &sensor_dev_attr_in3_input.dev_attr.attr,
+    &sensor_dev_attr_in4_input.dev_attr.attr,
+    &sensor_dev_attr_in5_input.dev_attr.attr,
+    &sensor_dev_attr_in6_input.dev_attr.attr,
+    &sensor_dev_attr_in7_input.dev_attr.attr,
+    NULL
+};
+
+static const struct attribute_group ads7828_group = {
+    .attrs = ads7828_attributes,
+};
+
+/* This function is called by i2c_detect */
+static int ads7828_detect(struct i2c_adapter *adapter, int address, int 

+{
+    struct i2c_client *new_client;

+    struct ads7828_data *data;
+    int err = 0, ch = 0;

+    const char *name = "";
+    u8 cmd;
+    u16 in_data;
+
+    /* Check we have a valid client */
+    if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA |
+                         I2C_FUNC_SMBUS_WORD_DATA))

+        goto exit;
+
+    /* OK. For now, we presume we have a valid client. We now create the
+         client structure, even though we cannot fill it completely yet.
+         But it allows us to access ads7828_read_value. */
+    data = kmalloc(sizeof(struct ads7828_data), GFP_KERNEL);
+    if (!data)
+        err = -ENOMEM;

+        goto exit;
+    }
+    memset(data, 0, sizeof(struct ads7828_data));
+
+    new_client = &data->client;
+    i2c_set_clientdata(new_client, data);
+    new_client->addr = address;
+    new_client->adapter = adapter;
+    new_client->driver = &ads7828_driver;
+    new_client->flags = 0;

+
+    /* Perform local initialisation */
+    ads7828_init_client(new_client);
+
+    /* Now, we do the remaining detection. There is no identification
+    dedicated register so attempt to sanity check using knowledge of 

+    - Read from the 8 channel addresses
+    - Check the top 4 bits of each result are not set (12 data bits)
+    */
+    if (kind < 0) {
+        for (ch = 0; ch < ADS7828_NCH; ch++) {
+            /* cmd byte C2,C1,C0 - see datasheet */
+            cmd = (((ch>>1) | (ch&0x01)<<2)<<4);

+            cmd |= ads7828_cmd_byte;
+            in_data = ads7828_read_value(new_client, cmd);
+            if (in_data & 0xF000) {
+                printk(KERN_DEBUG
+                "%s : Doesn't look like an ads7828 device\n",
+                __FUNCTION__);

+                goto exit_free;
+            }
+        }
+    }
+

+    /* Determine the chip type - only one kind supported! */
+    if (kind <= 0)
+        kind = ads7828;
+
+    if (kind = ads7828)
+        name = "ads7828";
+
+    /* Fill in the remaining client fields, put it into the global list */
+    strlcpy(new_client->name, name, I2C_NAME_SIZE);
+    data->valid = 0;

+    mutex_init(&data->update_lock);
+
+    /* Tell the I2C layer a new client has arrived */
+    err = i2c_attach_client(new_client);
+    if (err)
+        goto exit_free;
+
+    /* Register sysfs hooks */
+    err = sysfs_create_group(&new_client->dev.kobj, &ads7828_group);
+    if (err)
+        goto exit_detach;
+
+    data->class_dev = hwmon_device_register(&new_client->dev);
+    if (IS_ERR(data->class_dev)) {
+        err = PTR_ERR(data->class_dev);
+        goto exit_remove;
+    }
+
+    return 0;
+
+exit_remove:
+    sysfs_remove_group(&new_client->dev.kobj, &ads7828_group);
+exit_detach:
+    i2c_detach_client(new_client);
+exit_free:
+    kfree(data);
+exit:
+    return err;
+}
+
+static int ads7828_detach_client(struct i2c_client *client)
+{
+    struct ads7828_data *data = i2c_get_clientdata(client);
+    hwmon_device_unregister(data->class_dev);
+    sysfs_remove_group(&client->dev.kobj, &ads7828_group);
+    i2c_detach_client(client);

+    kfree(i2c_get_clientdata(client));
+    return 0;
+}
+
+/* The ADS7828 returns the 12bit sample in two bytes,
+    these are read as a word then byte-swapped */
+static u16 ads7828_read_value(struct i2c_client *client, u8 reg)
+{
+    u16 buffer = i2c_smbus_read_word_data(client, reg);
+    return ((buffer&0xFF)<<8) | ((buffer&0xFF00)>>8);

+}
+
+static void ads7828_init_client(struct i2c_client *client)
+{
+    /* Initialise the command byte according to module parameters */
+    ads7828_cmd_byte = ads7828_se_input ?
+        ADS7828_CMD_SD_SE : ADS7828_CMD_SD_DIFF;
+    ads7828_cmd_byte |= ads7828_int_vref ?
+        ADS7828_CMD_PD3 : ADS7828_CMD_PD1;
+
+    /* Calculate the LSB resolution */
+    ads7828_lsb_resol = (ads7828_vref*1000)/4096;

+}
+
+static struct ads7828_data *ads7828_update_device(struct device *dev)
+{
+    struct i2c_client *client = to_i2c_client(dev);
+    struct ads7828_data *data = i2c_get_clientdata(client);
+    unsigned int cmd, ch;
+
+    mutex_lock(&data->update_lock); /* LOCK */
+
+    if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
+            || !data->valid) {
+        dev_dbg(&client->dev, "Starting ads7828 update\n");
+
+        for (ch = 0; ch < ADS7828_NCH; ch++) {
+            /* cmd byte C2,C1,C0 - see datasheet */
+            cmd = (((ch>>1) | (ch&0x01)<<2)<<4);
+            cmd |= ads7828_cmd_byte;
+            data->adc_input[ch] = ads7828_read_value(client, cmd);
+        }
+        data->last_updated = jiffies;
+        data->valid = 1;
+    }
+
+    mutex_unlock(&data->update_lock); /* UNLOCK */
+
+    return data;
+}
+
+static int __init sensors_ads7828_init(void)

+{
+    return i2c_add_driver(&ads7828_driver);
+}
+
+static void __exit sensors_ads7828_exit(void)
+{
+    i2c_del_driver(&ads7828_driver);
+}
+
+MODULE_AUTHOR("Steve Hardy <[email protected]");

+MODULE_DESCRIPTION("ADS7828 driver");
+MODULE_LICENSE("GPL");
+
+module_init(sensors_ads7828_init);
+module_exit(sensors_ads7828_exit);

Jean Delvare

_______________________________________________
lm-sensors mailing list
[email protected]
http://lists.lm-sensors.org/mailman/listinfo/lm-sensors