hwmon: (w83781d) Make ISA interface depend on CONFIG_ISA
Probing the ISA bus on systems without ISA bus may hang the system. This patch makes the ISA bus related code depend on the kernel configuration parameter CONFIG_ISA. It moves ISA bus related code into one #ifdef CONFIG_ISA ... #endif block and adds some helper function. Signed-off-by: Wolfgang Grandegger <wg@grandegger.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>hifive-unleashed-5.1
Wolfgang Grandegger
Jean Delvare
parent
10c08f937d
commit
443850ce58
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@ -38,25 +38,24 @@
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#include <linux/slab.h>
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#include <linux/jiffies.h>
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#include <linux/i2c.h>
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#include <linux/platform_device.h>
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#include <linux/ioport.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-vid.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/sysfs.h>
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#include <linux/err.h>
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#include <linux/mutex.h>
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#include <asm/io.h>
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#include "lm75.h"
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/* ISA device, if found */
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static struct platform_device *pdev;
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#ifdef CONFIG_ISA
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#include <linux/platform_device.h>
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#include <linux/ioport.h>
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#include <asm/io.h>
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#endif
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#include "lm75.h"
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/* Addresses to scan */
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static const unsigned short normal_i2c[] = { 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
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0x2e, 0x2f, I2C_CLIENT_END };
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static unsigned short isa_address = 0x290;
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/* Insmod parameters */
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I2C_CLIENT_INSMOD_4(w83781d, w83782d, w83783s, as99127f);
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I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: "
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@ -245,13 +244,13 @@ struct w83781d_data {
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u8 vrm;
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};
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static struct w83781d_data *w83781d_data_if_isa(void);
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static int w83781d_alias_detect(struct i2c_client *client, u8 chipid);
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static int w83781d_attach_adapter(struct i2c_adapter *adapter);
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static int w83781d_detect(struct i2c_adapter *adapter, int address, int kind);
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static int w83781d_detach_client(struct i2c_client *client);
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static int __devinit w83781d_isa_probe(struct platform_device *pdev);
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static int __devexit w83781d_isa_remove(struct platform_device *pdev);
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static int w83781d_read_value(struct w83781d_data *data, u16 reg);
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static int w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value);
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static struct w83781d_data *w83781d_update_device(struct device *dev);
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@ -265,16 +264,6 @@ static struct i2c_driver w83781d_driver = {
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.detach_client = w83781d_detach_client,
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};
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static struct platform_driver w83781d_isa_driver = {
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.driver = {
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.owner = THIS_MODULE,
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.name = "w83781d",
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},
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.probe = w83781d_isa_probe,
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.remove = w83781d_isa_remove,
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};
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/* following are the sysfs callback functions */
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#define show_in_reg(reg) \
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static ssize_t show_##reg (struct device *dev, struct device_attribute *da, \
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@ -836,16 +825,6 @@ static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR,
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static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR,
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show_sensor, store_sensor, 2);
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/* I2C devices get this name attribute automatically, but for ISA devices
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we must create it by ourselves. */
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static ssize_t
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show_name(struct device *dev, struct device_attribute *devattr, char *buf)
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{
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struct w83781d_data *data = dev_get_drvdata(dev);
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return sprintf(buf, "%s\n", data->client.name);
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}
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static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
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/* This function is called when:
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* w83781d_driver is inserted (when this module is loaded), for each
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available adapter
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@ -855,13 +834,12 @@ static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
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static int
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w83781d_attach_adapter(struct i2c_adapter *adapter)
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{
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struct w83781d_data *data;
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struct w83781d_data *data = w83781d_data_if_isa();
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int err;
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if (!(adapter->class & I2C_CLASS_HWMON))
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return 0;
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data = pdev ? platform_get_drvdata(pdev) : NULL;
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if (data)
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mutex_lock(&data->update_lock);
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err = i2c_probe(adapter, &addr_data, w83781d_detect);
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@ -1037,40 +1015,6 @@ static const struct attribute_group w83781d_group_opt = {
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.attrs = w83781d_attributes_opt,
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};
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/* Returns 1 if the I2C chip appears to be an alias of the ISA chip */
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static int w83781d_alias_detect(struct i2c_client *client, u8 chipid)
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{
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struct w83781d_data *i2c, *isa;
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int i;
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if (!pdev) /* No ISA chip */
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return 0;
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i2c = i2c_get_clientdata(client);
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isa = platform_get_drvdata(pdev);
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if (w83781d_read_value(isa, W83781D_REG_I2C_ADDR) != client->addr)
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return 0; /* Address doesn't match */
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if (w83781d_read_value(isa, W83781D_REG_WCHIPID) != chipid)
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return 0; /* Chip type doesn't match */
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/* We compare all the limit registers, the config register and the
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* interrupt mask registers */
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for (i = 0x2b; i <= 0x3d; i++) {
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if (w83781d_read_value(isa, i) != w83781d_read_value(i2c, i))
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return 0;
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}
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if (w83781d_read_value(isa, W83781D_REG_CONFIG) !=
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w83781d_read_value(i2c, W83781D_REG_CONFIG))
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return 0;
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for (i = 0x43; i <= 0x46; i++) {
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if (w83781d_read_value(isa, i) != w83781d_read_value(i2c, i))
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return 0;
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}
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return 1;
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}
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/* No clean up is done on error, it's up to the caller */
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static int
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w83781d_create_files(struct device *dev, int kind, int is_isa)
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@ -1167,12 +1111,6 @@ w83781d_create_files(struct device *dev, int kind, int is_isa)
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}
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}
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if (is_isa) {
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err = device_create_file(&pdev->dev, &dev_attr_name);
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if (err)
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return err;
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}
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return 0;
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}
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@ -1381,221 +1319,80 @@ w83781d_detach_client(struct i2c_client *client)
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return 0;
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}
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static int __devinit
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w83781d_isa_probe(struct platform_device *pdev)
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{
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int err, reg;
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struct w83781d_data *data;
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struct resource *res;
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const char *name;
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/* Reserve the ISA region */
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res = platform_get_resource(pdev, IORESOURCE_IO, 0);
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if (!request_region(res->start + W83781D_ADDR_REG_OFFSET, 2,
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"w83781d")) {
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err = -EBUSY;
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goto exit;
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}
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if (!(data = kzalloc(sizeof(struct w83781d_data), GFP_KERNEL))) {
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err = -ENOMEM;
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goto exit_release_region;
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}
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mutex_init(&data->lock);
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data->client.addr = res->start;
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i2c_set_clientdata(&data->client, data);
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platform_set_drvdata(pdev, data);
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reg = w83781d_read_value(data, W83781D_REG_WCHIPID);
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switch (reg) {
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case 0x30:
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data->type = w83782d;
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name = "w83782d";
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break;
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default:
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data->type = w83781d;
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name = "w83781d";
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}
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strlcpy(data->client.name, name, I2C_NAME_SIZE);
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/* Initialize the W83781D chip */
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w83781d_init_device(&pdev->dev);
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/* Register sysfs hooks */
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err = w83781d_create_files(&pdev->dev, data->type, 1);
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if (err)
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goto exit_remove_files;
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data->hwmon_dev = hwmon_device_register(&pdev->dev);
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if (IS_ERR(data->hwmon_dev)) {
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err = PTR_ERR(data->hwmon_dev);
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goto exit_remove_files;
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}
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return 0;
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exit_remove_files:
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sysfs_remove_group(&pdev->dev.kobj, &w83781d_group);
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sysfs_remove_group(&pdev->dev.kobj, &w83781d_group_opt);
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device_remove_file(&pdev->dev, &dev_attr_name);
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kfree(data);
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exit_release_region:
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release_region(res->start + W83781D_ADDR_REG_OFFSET, 2);
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exit:
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return err;
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}
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static int __devexit
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w83781d_isa_remove(struct platform_device *pdev)
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{
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struct w83781d_data *data = platform_get_drvdata(pdev);
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hwmon_device_unregister(data->hwmon_dev);
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sysfs_remove_group(&pdev->dev.kobj, &w83781d_group);
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sysfs_remove_group(&pdev->dev.kobj, &w83781d_group_opt);
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device_remove_file(&pdev->dev, &dev_attr_name);
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release_region(data->client.addr + W83781D_ADDR_REG_OFFSET, 2);
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kfree(data);
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return 0;
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}
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/* The SMBus locks itself, usually, but nothing may access the Winbond between
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bank switches. ISA access must always be locked explicitly!
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We ignore the W83781D BUSY flag at this moment - it could lead to deadlocks,
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would slow down the W83781D access and should not be necessary.
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There are some ugly typecasts here, but the good news is - they should
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nowhere else be necessary! */
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static int
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w83781d_read_value(struct w83781d_data *data, u16 reg)
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w83781d_read_value_i2c(struct w83781d_data *data, u16 reg)
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{
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struct i2c_client *client = &data->client;
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int res, word_sized, bank;
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int res, bank;
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struct i2c_client *cl;
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mutex_lock(&data->lock);
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if (!client->driver) { /* ISA device */
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word_sized = (((reg & 0xff00) == 0x100)
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|| ((reg & 0xff00) == 0x200))
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&& (((reg & 0x00ff) == 0x50)
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|| ((reg & 0x00ff) == 0x53)
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|| ((reg & 0x00ff) == 0x55));
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if (reg & 0xff00) {
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outb_p(W83781D_REG_BANK,
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client->addr + W83781D_ADDR_REG_OFFSET);
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outb_p(reg >> 8,
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client->addr + W83781D_DATA_REG_OFFSET);
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}
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outb_p(reg & 0xff, client->addr + W83781D_ADDR_REG_OFFSET);
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res = inb_p(client->addr + W83781D_DATA_REG_OFFSET);
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if (word_sized) {
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outb_p((reg & 0xff) + 1,
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client->addr + W83781D_ADDR_REG_OFFSET);
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res =
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(res << 8) + inb_p(client->addr +
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W83781D_DATA_REG_OFFSET);
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}
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if (reg & 0xff00) {
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outb_p(W83781D_REG_BANK,
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client->addr + W83781D_ADDR_REG_OFFSET);
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outb_p(0, client->addr + W83781D_DATA_REG_OFFSET);
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}
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bank = (reg >> 8) & 0x0f;
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if (bank > 2)
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/* switch banks */
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i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
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bank);
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if (bank == 0 || bank > 2) {
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res = i2c_smbus_read_byte_data(client, reg & 0xff);
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} else {
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bank = (reg >> 8) & 0x0f;
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if (bank > 2)
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/* switch banks */
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i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
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bank);
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if (bank == 0 || bank > 2) {
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res = i2c_smbus_read_byte_data(client, reg & 0xff);
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} else {
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/* switch to subclient */
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cl = data->lm75[bank - 1];
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/* convert from ISA to LM75 I2C addresses */
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switch (reg & 0xff) {
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case 0x50: /* TEMP */
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res = swab16(i2c_smbus_read_word_data(cl, 0));
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break;
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case 0x52: /* CONFIG */
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res = i2c_smbus_read_byte_data(cl, 1);
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break;
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case 0x53: /* HYST */
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res = swab16(i2c_smbus_read_word_data(cl, 2));
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break;
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case 0x55: /* OVER */
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default:
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res = swab16(i2c_smbus_read_word_data(cl, 3));
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break;
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}
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/* switch to subclient */
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cl = data->lm75[bank - 1];
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/* convert from ISA to LM75 I2C addresses */
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switch (reg & 0xff) {
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case 0x50: /* TEMP */
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res = swab16(i2c_smbus_read_word_data(cl, 0));
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break;
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case 0x52: /* CONFIG */
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res = i2c_smbus_read_byte_data(cl, 1);
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break;
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case 0x53: /* HYST */
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res = swab16(i2c_smbus_read_word_data(cl, 2));
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break;
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case 0x55: /* OVER */
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default:
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res = swab16(i2c_smbus_read_word_data(cl, 3));
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break;
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}
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if (bank > 2)
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i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
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}
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mutex_unlock(&data->lock);
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if (bank > 2)
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i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
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return res;
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}
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static int
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w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value)
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w83781d_write_value_i2c(struct w83781d_data *data, u16 reg, u16 value)
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{
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struct i2c_client *client = &data->client;
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int word_sized, bank;
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int bank;
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struct i2c_client *cl;
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mutex_lock(&data->lock);
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if (!client->driver) { /* ISA device */
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word_sized = (((reg & 0xff00) == 0x100)
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|| ((reg & 0xff00) == 0x200))
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&& (((reg & 0x00ff) == 0x53)
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|| ((reg & 0x00ff) == 0x55));
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if (reg & 0xff00) {
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outb_p(W83781D_REG_BANK,
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client->addr + W83781D_ADDR_REG_OFFSET);
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outb_p(reg >> 8,
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client->addr + W83781D_DATA_REG_OFFSET);
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}
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outb_p(reg & 0xff, client->addr + W83781D_ADDR_REG_OFFSET);
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if (word_sized) {
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outb_p(value >> 8,
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client->addr + W83781D_DATA_REG_OFFSET);
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outb_p((reg & 0xff) + 1,
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client->addr + W83781D_ADDR_REG_OFFSET);
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}
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outb_p(value & 0xff, client->addr + W83781D_DATA_REG_OFFSET);
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if (reg & 0xff00) {
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outb_p(W83781D_REG_BANK,
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client->addr + W83781D_ADDR_REG_OFFSET);
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outb_p(0, client->addr + W83781D_DATA_REG_OFFSET);
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}
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bank = (reg >> 8) & 0x0f;
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if (bank > 2)
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/* switch banks */
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i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
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bank);
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if (bank == 0 || bank > 2) {
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i2c_smbus_write_byte_data(client, reg & 0xff,
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value & 0xff);
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} else {
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bank = (reg >> 8) & 0x0f;
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if (bank > 2)
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/* switch banks */
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i2c_smbus_write_byte_data(client, W83781D_REG_BANK,
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bank);
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if (bank == 0 || bank > 2) {
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i2c_smbus_write_byte_data(client, reg & 0xff,
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value & 0xff);
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} else {
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/* switch to subclient */
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cl = data->lm75[bank - 1];
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/* convert from ISA to LM75 I2C addresses */
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switch (reg & 0xff) {
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case 0x52: /* CONFIG */
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i2c_smbus_write_byte_data(cl, 1, value & 0xff);
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break;
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case 0x53: /* HYST */
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i2c_smbus_write_word_data(cl, 2, swab16(value));
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break;
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case 0x55: /* OVER */
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i2c_smbus_write_word_data(cl, 3, swab16(value));
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break;
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}
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/* switch to subclient */
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cl = data->lm75[bank - 1];
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/* convert from ISA to LM75 I2C addresses */
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switch (reg & 0xff) {
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case 0x52: /* CONFIG */
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i2c_smbus_write_byte_data(cl, 1, value & 0xff);
|
||||
break;
|
||||
case 0x53: /* HYST */
|
||||
i2c_smbus_write_word_data(cl, 2, swab16(value));
|
||||
break;
|
||||
case 0x55: /* OVER */
|
||||
i2c_smbus_write_word_data(cl, 3, swab16(value));
|
||||
break;
|
||||
}
|
||||
if (bank > 2)
|
||||
i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
|
||||
}
|
||||
mutex_unlock(&data->lock);
|
||||
if (bank > 2)
|
||||
i2c_smbus_write_byte_data(client, W83781D_REG_BANK, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -1815,6 +1612,255 @@ static struct w83781d_data *w83781d_update_device(struct device *dev)
|
|||
return data;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_ISA
|
||||
|
||||
/* ISA device, if found */
|
||||
static struct platform_device *pdev;
|
||||
|
||||
static unsigned short isa_address = 0x290;
|
||||
|
||||
/* I2C devices get this name attribute automatically, but for ISA devices
|
||||
we must create it by ourselves. */
|
||||
static ssize_t
|
||||
show_name(struct device *dev, struct device_attribute *devattr, char *buf)
|
||||
{
|
||||
struct w83781d_data *data = dev_get_drvdata(dev);
|
||||
return sprintf(buf, "%s\n", data->client.name);
|
||||
}
|
||||
static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
|
||||
|
||||
static struct w83781d_data *w83781d_data_if_isa(void)
|
||||
{
|
||||
return pdev ? platform_get_drvdata(pdev) : NULL;
|
||||
}
|
||||
|
||||
/* Returns 1 if the I2C chip appears to be an alias of the ISA chip */
|
||||
static int w83781d_alias_detect(struct i2c_client *client, u8 chipid)
|
||||
{
|
||||
struct w83781d_data *i2c, *isa;
|
||||
int i;
|
||||
|
||||
if (!pdev) /* No ISA chip */
|
||||
return 0;
|
||||
|
||||
i2c = i2c_get_clientdata(client);
|
||||
isa = platform_get_drvdata(pdev);
|
||||
|
||||
if (w83781d_read_value(isa, W83781D_REG_I2C_ADDR) != client->addr)
|
||||
return 0; /* Address doesn't match */
|
||||
if (w83781d_read_value(isa, W83781D_REG_WCHIPID) != chipid)
|
||||
return 0; /* Chip type doesn't match */
|
||||
|
||||
/* We compare all the limit registers, the config register and the
|
||||
* interrupt mask registers */
|
||||
for (i = 0x2b; i <= 0x3d; i++) {
|
||||
if (w83781d_read_value(isa, i) != w83781d_read_value(i2c, i))
|
||||
return 0;
|
||||
}
|
||||
if (w83781d_read_value(isa, W83781D_REG_CONFIG) !=
|
||||
w83781d_read_value(i2c, W83781D_REG_CONFIG))
|
||||
return 0;
|
||||
for (i = 0x43; i <= 0x46; i++) {
|
||||
if (w83781d_read_value(isa, i) != w83781d_read_value(i2c, i))
|
||||
return 0;
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int
|
||||
w83781d_read_value_isa(struct w83781d_data *data, u16 reg)
|
||||
{
|
||||
struct i2c_client *client = &data->client;
|
||||
int word_sized, res;
|
||||
|
||||
word_sized = (((reg & 0xff00) == 0x100)
|
||||
|| ((reg & 0xff00) == 0x200))
|
||||
&& (((reg & 0x00ff) == 0x50)
|
||||
|| ((reg & 0x00ff) == 0x53)
|
||||
|| ((reg & 0x00ff) == 0x55));
|
||||
if (reg & 0xff00) {
|
||||
outb_p(W83781D_REG_BANK,
|
||||
client->addr + W83781D_ADDR_REG_OFFSET);
|
||||
outb_p(reg >> 8,
|
||||
client->addr + W83781D_DATA_REG_OFFSET);
|
||||
}
|
||||
outb_p(reg & 0xff, client->addr + W83781D_ADDR_REG_OFFSET);
|
||||
res = inb_p(client->addr + W83781D_DATA_REG_OFFSET);
|
||||
if (word_sized) {
|
||||
outb_p((reg & 0xff) + 1,
|
||||
client->addr + W83781D_ADDR_REG_OFFSET);
|
||||
res =
|
||||
(res << 8) + inb_p(client->addr +
|
||||
W83781D_DATA_REG_OFFSET);
|
||||
}
|
||||
if (reg & 0xff00) {
|
||||
outb_p(W83781D_REG_BANK,
|
||||
client->addr + W83781D_ADDR_REG_OFFSET);
|
||||
outb_p(0, client->addr + W83781D_DATA_REG_OFFSET);
|
||||
}
|
||||
return res;
|
||||
}
|
||||
|
||||
static void
|
||||
w83781d_write_value_isa(struct w83781d_data *data, u16 reg, u16 value)
|
||||
{
|
||||
struct i2c_client *client = &data->client;
|
||||
int word_sized;
|
||||
|
||||
word_sized = (((reg & 0xff00) == 0x100)
|
||||
|| ((reg & 0xff00) == 0x200))
|
||||
&& (((reg & 0x00ff) == 0x53)
|
||||
|| ((reg & 0x00ff) == 0x55));
|
||||
if (reg & 0xff00) {
|
||||
outb_p(W83781D_REG_BANK,
|
||||
client->addr + W83781D_ADDR_REG_OFFSET);
|
||||
outb_p(reg >> 8,
|
||||
client->addr + W83781D_DATA_REG_OFFSET);
|
||||
}
|
||||
outb_p(reg & 0xff, client->addr + W83781D_ADDR_REG_OFFSET);
|
||||
if (word_sized) {
|
||||
outb_p(value >> 8,
|
||||
client->addr + W83781D_DATA_REG_OFFSET);
|
||||
outb_p((reg & 0xff) + 1,
|
||||
client->addr + W83781D_ADDR_REG_OFFSET);
|
||||
}
|
||||
outb_p(value & 0xff, client->addr + W83781D_DATA_REG_OFFSET);
|
||||
if (reg & 0xff00) {
|
||||
outb_p(W83781D_REG_BANK,
|
||||
client->addr + W83781D_ADDR_REG_OFFSET);
|
||||
outb_p(0, client->addr + W83781D_DATA_REG_OFFSET);
|
||||
}
|
||||
}
|
||||
|
||||
/* The SMBus locks itself, usually, but nothing may access the Winbond between
|
||||
bank switches. ISA access must always be locked explicitly!
|
||||
We ignore the W83781D BUSY flag at this moment - it could lead to deadlocks,
|
||||
would slow down the W83781D access and should not be necessary.
|
||||
There are some ugly typecasts here, but the good news is - they should
|
||||
nowhere else be necessary! */
|
||||
static int
|
||||
w83781d_read_value(struct w83781d_data *data, u16 reg)
|
||||
{
|
||||
struct i2c_client *client = &data->client;
|
||||
int res;
|
||||
|
||||
mutex_lock(&data->lock);
|
||||
if (client->driver)
|
||||
res = w83781d_read_value_i2c(data, reg);
|
||||
else
|
||||
res = w83781d_read_value_isa(data, reg);
|
||||
mutex_unlock(&data->lock);
|
||||
return res;
|
||||
}
|
||||
|
||||
static int
|
||||
w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value)
|
||||
{
|
||||
struct i2c_client *client = &data->client;
|
||||
|
||||
mutex_lock(&data->lock);
|
||||
if (client->driver)
|
||||
w83781d_write_value_i2c(data, reg, value);
|
||||
else
|
||||
w83781d_write_value_isa(data, reg, value);
|
||||
mutex_unlock(&data->lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __devinit
|
||||
w83781d_isa_probe(struct platform_device *pdev)
|
||||
{
|
||||
int err, reg;
|
||||
struct w83781d_data *data;
|
||||
struct resource *res;
|
||||
const char *name;
|
||||
|
||||
/* Reserve the ISA region */
|
||||
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
|
||||
if (!request_region(res->start + W83781D_ADDR_REG_OFFSET, 2,
|
||||
"w83781d")) {
|
||||
err = -EBUSY;
|
||||
goto exit;
|
||||
}
|
||||
|
||||
data = kzalloc(sizeof(struct w83781d_data), GFP_KERNEL);
|
||||
if (!data) {
|
||||
err = -ENOMEM;
|
||||
goto exit_release_region;
|
||||
}
|
||||
mutex_init(&data->lock);
|
||||
data->client.addr = res->start;
|
||||
i2c_set_clientdata(&data->client, data);
|
||||
platform_set_drvdata(pdev, data);
|
||||
|
||||
reg = w83781d_read_value(data, W83781D_REG_WCHIPID);
|
||||
switch (reg) {
|
||||
case 0x30:
|
||||
data->type = w83782d;
|
||||
name = "w83782d";
|
||||
break;
|
||||
default:
|
||||
data->type = w83781d;
|
||||
name = "w83781d";
|
||||
}
|
||||
strlcpy(data->client.name, name, I2C_NAME_SIZE);
|
||||
|
||||
/* Initialize the W83781D chip */
|
||||
w83781d_init_device(&pdev->dev);
|
||||
|
||||
/* Register sysfs hooks */
|
||||
err = w83781d_create_files(&pdev->dev, data->type, 1);
|
||||
if (err)
|
||||
goto exit_remove_files;
|
||||
|
||||
err = device_create_file(&pdev->dev, &dev_attr_name);
|
||||
if (err)
|
||||
goto exit_remove_files;
|
||||
|
||||
data->hwmon_dev = hwmon_device_register(&pdev->dev);
|
||||
if (IS_ERR(data->hwmon_dev)) {
|
||||
err = PTR_ERR(data->hwmon_dev);
|
||||
goto exit_remove_files;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
exit_remove_files:
|
||||
sysfs_remove_group(&pdev->dev.kobj, &w83781d_group);
|
||||
sysfs_remove_group(&pdev->dev.kobj, &w83781d_group_opt);
|
||||
device_remove_file(&pdev->dev, &dev_attr_name);
|
||||
kfree(data);
|
||||
exit_release_region:
|
||||
release_region(res->start + W83781D_ADDR_REG_OFFSET, 2);
|
||||
exit:
|
||||
return err;
|
||||
}
|
||||
|
||||
static int __devexit
|
||||
w83781d_isa_remove(struct platform_device *pdev)
|
||||
{
|
||||
struct w83781d_data *data = platform_get_drvdata(pdev);
|
||||
|
||||
hwmon_device_unregister(data->hwmon_dev);
|
||||
sysfs_remove_group(&pdev->dev.kobj, &w83781d_group);
|
||||
sysfs_remove_group(&pdev->dev.kobj, &w83781d_group_opt);
|
||||
device_remove_file(&pdev->dev, &dev_attr_name);
|
||||
release_region(data->client.addr + W83781D_ADDR_REG_OFFSET, 2);
|
||||
kfree(data);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct platform_driver w83781d_isa_driver = {
|
||||
.driver = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = "w83781d",
|
||||
},
|
||||
.probe = w83781d_isa_probe,
|
||||
.remove = __devexit_p(w83781d_isa_remove),
|
||||
};
|
||||
|
||||
/* return 1 if a supported chip is found, 0 otherwise */
|
||||
static int __init
|
||||
w83781d_isa_found(unsigned short address)
|
||||
|
|
@ -1951,12 +1997,10 @@ w83781d_isa_device_add(unsigned short address)
|
|||
}
|
||||
|
||||
static int __init
|
||||
sensors_w83781d_init(void)
|
||||
w83781d_isa_register(void)
|
||||
{
|
||||
int res;
|
||||
|
||||
/* We register the ISA device first, so that we can skip the
|
||||
* registration of an I2C interface to the same device. */
|
||||
if (w83781d_isa_found(isa_address)) {
|
||||
res = platform_driver_register(&w83781d_isa_driver);
|
||||
if (res)
|
||||
|
|
@ -1968,16 +2012,88 @@ sensors_w83781d_init(void)
|
|||
goto exit_unreg_isa_driver;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
exit_unreg_isa_driver:
|
||||
platform_driver_unregister(&w83781d_isa_driver);
|
||||
exit:
|
||||
return res;
|
||||
}
|
||||
|
||||
static void __exit
|
||||
w83781d_isa_unregister(void)
|
||||
{
|
||||
if (pdev) {
|
||||
platform_device_unregister(pdev);
|
||||
platform_driver_unregister(&w83781d_isa_driver);
|
||||
}
|
||||
}
|
||||
#else /* !CONFIG_ISA */
|
||||
|
||||
static struct w83781d_data *w83781d_data_if_isa(void)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static int
|
||||
w83781d_alias_detect(struct i2c_client *client, u8 chipid)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
w83781d_read_value(struct w83781d_data *data, u16 reg)
|
||||
{
|
||||
int res;
|
||||
|
||||
mutex_lock(&data->lock);
|
||||
res = w83781d_read_value_i2c(data, reg);
|
||||
mutex_unlock(&data->lock);
|
||||
|
||||
return res;
|
||||
}
|
||||
|
||||
static int
|
||||
w83781d_write_value(struct w83781d_data *data, u16 reg, u16 value)
|
||||
{
|
||||
mutex_lock(&data->lock);
|
||||
w83781d_write_value_i2c(data, reg, value);
|
||||
mutex_unlock(&data->lock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int __init
|
||||
w83781d_isa_register(void)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __exit
|
||||
w83781d_isa_unregister(void)
|
||||
{
|
||||
}
|
||||
#endif /* CONFIG_ISA */
|
||||
|
||||
static int __init
|
||||
sensors_w83781d_init(void)
|
||||
{
|
||||
int res;
|
||||
|
||||
/* We register the ISA device first, so that we can skip the
|
||||
* registration of an I2C interface to the same device. */
|
||||
res = w83781d_isa_register();
|
||||
if (res)
|
||||
goto exit;
|
||||
|
||||
res = i2c_add_driver(&w83781d_driver);
|
||||
if (res)
|
||||
goto exit_unreg_isa_device;
|
||||
goto exit_unreg_isa;
|
||||
|
||||
return 0;
|
||||
|
||||
exit_unreg_isa_device:
|
||||
platform_device_unregister(pdev);
|
||||
exit_unreg_isa_driver:
|
||||
platform_driver_unregister(&w83781d_isa_driver);
|
||||
exit_unreg_isa:
|
||||
w83781d_isa_unregister();
|
||||
exit:
|
||||
return res;
|
||||
}
|
||||
|
|
@ -1985,10 +2101,7 @@ sensors_w83781d_init(void)
|
|||
static void __exit
|
||||
sensors_w83781d_exit(void)
|
||||
{
|
||||
if (pdev) {
|
||||
platform_device_unregister(pdev);
|
||||
platform_driver_unregister(&w83781d_isa_driver);
|
||||
}
|
||||
w83781d_isa_unregister();
|
||||
i2c_del_driver(&w83781d_driver);
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue