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https://github.com/edk2-porting/linux-next.git
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hwmon/sis5595: Convert to a platform driver
Convert the sis5595 driver from the nonsensical i2c-isa hack to a regular platform driver. Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Jean Delvare
Mark M. Hoffman
parent
1e71a5a2ce
commit
17e7dc4373
@ -431,8 +431,7 @@ config SENSORS_PC87427
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config SENSORS_SIS5595
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tristate "Silicon Integrated Systems Corp. SiS5595"
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depends on I2C && PCI && EXPERIMENTAL
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select I2C_ISA
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depends on PCI
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help
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If you say yes here you get support for the integrated sensors in
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SiS5595 South Bridges.
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@ -54,8 +54,7 @@
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#include <linux/slab.h>
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#include <linux/ioport.h>
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#include <linux/pci.h>
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#include <linux/i2c.h>
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#include <linux/i2c-isa.h>
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#include <linux/platform_device.h>
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#include <linux/hwmon.h>
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#include <linux/err.h>
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#include <linux/init.h>
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@ -72,10 +71,7 @@ module_param(force_addr, ushort, 0);
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MODULE_PARM_DESC(force_addr,
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"Initialize the base address of the sensors");
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/* Device address
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Note that we can't determine the ISA address until we have initialized
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our module */
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static unsigned short address;
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static struct platform_device *pdev;
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/* Many SIS5595 constants specified below */
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@ -165,7 +161,8 @@ static inline u8 DIV_TO_REG(int val)
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/* For each registered chip, we need to keep some data in memory.
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The structure is dynamically allocated. */
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struct sis5595_data {
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struct i2c_client client;
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unsigned short addr;
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const char *name;
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struct class_device *class_dev;
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struct mutex lock;
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@ -189,21 +186,21 @@ struct sis5595_data {
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static struct pci_dev *s_bridge; /* pointer to the (only) sis5595 */
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static int sis5595_detect(struct i2c_adapter *adapter);
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static int sis5595_detach_client(struct i2c_client *client);
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static int sis5595_probe(struct platform_device *pdev);
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static int sis5595_remove(struct platform_device *pdev);
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static int sis5595_read_value(struct i2c_client *client, u8 reg);
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static int sis5595_write_value(struct i2c_client *client, u8 reg, u8 value);
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static int sis5595_read_value(struct sis5595_data *data, u8 reg);
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static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value);
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static struct sis5595_data *sis5595_update_device(struct device *dev);
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static void sis5595_init_client(struct i2c_client *client);
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static void sis5595_init_device(struct sis5595_data *data);
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static struct i2c_driver sis5595_driver = {
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static struct platform_driver sis5595_driver = {
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.driver = {
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.owner = THIS_MODULE,
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.name = "sis5595",
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},
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.attach_adapter = sis5595_detect,
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.detach_client = sis5595_detach_client,
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.probe = sis5595_probe,
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.remove = __devexit_p(sis5595_remove),
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};
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/* 4 Voltages */
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@ -228,13 +225,12 @@ static ssize_t show_in_max(struct device *dev, char *buf, int nr)
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static ssize_t set_in_min(struct device *dev, const char *buf,
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size_t count, int nr)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct sis5595_data *data = i2c_get_clientdata(client);
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struct sis5595_data *data = dev_get_drvdata(dev);
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unsigned long val = simple_strtoul(buf, NULL, 10);
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mutex_lock(&data->update_lock);
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data->in_min[nr] = IN_TO_REG(val);
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sis5595_write_value(client, SIS5595_REG_IN_MIN(nr), data->in_min[nr]);
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sis5595_write_value(data, SIS5595_REG_IN_MIN(nr), data->in_min[nr]);
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mutex_unlock(&data->update_lock);
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return count;
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}
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@ -242,13 +238,12 @@ static ssize_t set_in_min(struct device *dev, const char *buf,
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static ssize_t set_in_max(struct device *dev, const char *buf,
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size_t count, int nr)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct sis5595_data *data = i2c_get_clientdata(client);
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struct sis5595_data *data = dev_get_drvdata(dev);
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unsigned long val = simple_strtoul(buf, NULL, 10);
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mutex_lock(&data->update_lock);
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data->in_max[nr] = IN_TO_REG(val);
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sis5595_write_value(client, SIS5595_REG_IN_MAX(nr), data->in_max[nr]);
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sis5595_write_value(data, SIS5595_REG_IN_MAX(nr), data->in_max[nr]);
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mutex_unlock(&data->update_lock);
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return count;
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}
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@ -307,13 +302,12 @@ static ssize_t show_temp_over(struct device *dev, struct device_attribute *attr,
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static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct sis5595_data *data = i2c_get_clientdata(client);
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struct sis5595_data *data = dev_get_drvdata(dev);
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long val = simple_strtol(buf, NULL, 10);
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mutex_lock(&data->update_lock);
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data->temp_over = TEMP_TO_REG(val);
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sis5595_write_value(client, SIS5595_REG_TEMP_OVER, data->temp_over);
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sis5595_write_value(data, SIS5595_REG_TEMP_OVER, data->temp_over);
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mutex_unlock(&data->update_lock);
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return count;
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}
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@ -326,13 +320,12 @@ static ssize_t show_temp_hyst(struct device *dev, struct device_attribute *attr,
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static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct sis5595_data *data = i2c_get_clientdata(client);
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struct sis5595_data *data = dev_get_drvdata(dev);
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long val = simple_strtol(buf, NULL, 10);
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mutex_lock(&data->update_lock);
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data->temp_hyst = TEMP_TO_REG(val);
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sis5595_write_value(client, SIS5595_REG_TEMP_HYST, data->temp_hyst);
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sis5595_write_value(data, SIS5595_REG_TEMP_HYST, data->temp_hyst);
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mutex_unlock(&data->update_lock);
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return count;
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}
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@ -361,13 +354,12 @@ static ssize_t show_fan_min(struct device *dev, char *buf, int nr)
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static ssize_t set_fan_min(struct device *dev, const char *buf,
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size_t count, int nr)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct sis5595_data *data = i2c_get_clientdata(client);
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struct sis5595_data *data = dev_get_drvdata(dev);
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unsigned long val = simple_strtoul(buf, NULL, 10);
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mutex_lock(&data->update_lock);
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data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
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sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
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sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
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mutex_unlock(&data->update_lock);
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return count;
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}
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@ -385,8 +377,7 @@ static ssize_t show_fan_div(struct device *dev, char *buf, int nr)
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static ssize_t set_fan_div(struct device *dev, const char *buf,
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size_t count, int nr)
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{
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struct i2c_client *client = to_i2c_client(dev);
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struct sis5595_data *data = i2c_get_clientdata(client);
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struct sis5595_data *data = dev_get_drvdata(dev);
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unsigned long min;
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unsigned long val = simple_strtoul(buf, NULL, 10);
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int reg;
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@ -394,7 +385,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf,
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mutex_lock(&data->update_lock);
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min = FAN_FROM_REG(data->fan_min[nr],
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DIV_FROM_REG(data->fan_div[nr]));
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reg = sis5595_read_value(client, SIS5595_REG_FANDIV);
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reg = sis5595_read_value(data, SIS5595_REG_FANDIV);
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switch (val) {
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case 1: data->fan_div[nr] = 0; break;
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@ -402,7 +393,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf,
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case 4: data->fan_div[nr] = 2; break;
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case 8: data->fan_div[nr] = 3; break;
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default:
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dev_err(&client->dev, "fan_div value %ld not "
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dev_err(dev, "fan_div value %ld not "
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"supported. Choose one of 1, 2, 4 or 8!\n", val);
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mutex_unlock(&data->update_lock);
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return -EINVAL;
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@ -416,10 +407,10 @@ static ssize_t set_fan_div(struct device *dev, const char *buf,
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reg = (reg & 0x3f) | (data->fan_div[nr] << 6);
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break;
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}
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sis5595_write_value(client, SIS5595_REG_FANDIV, reg);
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sis5595_write_value(data, SIS5595_REG_FANDIV, reg);
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data->fan_min[nr] =
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FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
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sis5595_write_value(client, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
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sis5595_write_value(data, SIS5595_REG_FAN_MIN(nr), data->fan_min[nr]);
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mutex_unlock(&data->update_lock);
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return count;
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}
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@ -473,6 +464,14 @@ static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, ch
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}
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static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
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static ssize_t show_name(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct sis5595_data *data = dev_get_drvdata(dev);
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return sprintf(buf, "%s\n", data->name);
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}
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static DEVICE_ATTR(name, S_IRUGO, show_name, NULL);
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static struct attribute *sis5595_attributes[] = {
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&dev_attr_in0_input.attr,
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&dev_attr_in0_min.attr,
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@ -495,6 +494,7 @@ static struct attribute *sis5595_attributes[] = {
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&dev_attr_fan2_div.attr,
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&dev_attr_alarms.attr,
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&dev_attr_name.attr,
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NULL
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};
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@ -518,65 +518,32 @@ static const struct attribute_group sis5595_group_opt = {
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};
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/* This is called when the module is loaded */
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static int sis5595_detect(struct i2c_adapter *adapter)
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static int __devinit sis5595_probe(struct platform_device *pdev)
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{
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int err = 0;
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int i;
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struct i2c_client *new_client;
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struct sis5595_data *data;
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struct resource *res;
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char val;
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u16 a;
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if (force_addr)
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address = force_addr & ~(SIS5595_EXTENT - 1);
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/* Reserve the ISA region */
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if (!request_region(address, SIS5595_EXTENT,
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res = platform_get_resource(pdev, IORESOURCE_IO, 0);
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if (!request_region(res->start, SIS5595_EXTENT,
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sis5595_driver.driver.name)) {
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err = -EBUSY;
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goto exit;
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}
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if (force_addr) {
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dev_warn(&adapter->dev, "forcing ISA address 0x%04X\n", address);
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if (PCIBIOS_SUCCESSFUL !=
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pci_write_config_word(s_bridge, SIS5595_BASE_REG, address))
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goto exit_release;
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if (PCIBIOS_SUCCESSFUL !=
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pci_read_config_word(s_bridge, SIS5595_BASE_REG, &a))
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goto exit_release;
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if ((a & ~(SIS5595_EXTENT - 1)) != address)
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/* doesn't work for some chips? */
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goto exit_release;
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}
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if (PCIBIOS_SUCCESSFUL !=
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pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val)) {
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goto exit_release;
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}
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if ((val & 0x80) == 0) {
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if (PCIBIOS_SUCCESSFUL !=
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pci_write_config_byte(s_bridge, SIS5595_ENABLE_REG,
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val | 0x80))
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goto exit_release;
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if (PCIBIOS_SUCCESSFUL !=
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pci_read_config_byte(s_bridge, SIS5595_ENABLE_REG, &val))
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goto exit_release;
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if ((val & 0x80) == 0)
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/* doesn't work for some chips! */
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goto exit_release;
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}
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if (!(data = kzalloc(sizeof(struct sis5595_data), GFP_KERNEL))) {
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err = -ENOMEM;
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goto exit_release;
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}
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new_client = &data->client;
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new_client->addr = address;
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mutex_init(&data->lock);
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i2c_set_clientdata(new_client, data);
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new_client->adapter = adapter;
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new_client->driver = &sis5595_driver;
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new_client->flags = 0;
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mutex_init(&data->update_lock);
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data->addr = res->start;
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data->name = "sis5595";
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platform_set_drvdata(pdev, data);
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/* Check revision and pin registers to determine whether 4 or 5 voltages */
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pci_read_config_byte(s_bridge, SIS5595_REVISION_REG, &(data->revision));
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@ -589,47 +556,37 @@ static int sis5595_detect(struct i2c_adapter *adapter)
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data->maxins = 4;
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}
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/* Fill in the remaining client fields and put it into the global list */
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strlcpy(new_client->name, "sis5595", I2C_NAME_SIZE);
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data->valid = 0;
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mutex_init(&data->update_lock);
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/* Tell the I2C layer a new client has arrived */
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if ((err = i2c_attach_client(new_client)))
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goto exit_free;
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/* Initialize the SIS5595 chip */
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sis5595_init_client(new_client);
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sis5595_init_device(data);
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/* A few vars need to be filled upon startup */
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for (i = 0; i < 2; i++) {
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data->fan_min[i] = sis5595_read_value(new_client,
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data->fan_min[i] = sis5595_read_value(data,
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SIS5595_REG_FAN_MIN(i));
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}
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/* Register sysfs hooks */
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if ((err = sysfs_create_group(&new_client->dev.kobj, &sis5595_group)))
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goto exit_detach;
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if ((err = sysfs_create_group(&pdev->dev.kobj, &sis5595_group)))
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goto exit_free;
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if (data->maxins == 4) {
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if ((err = device_create_file(&new_client->dev,
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if ((err = device_create_file(&pdev->dev,
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&dev_attr_in4_input))
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|| (err = device_create_file(&new_client->dev,
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|| (err = device_create_file(&pdev->dev,
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&dev_attr_in4_min))
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|| (err = device_create_file(&new_client->dev,
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|| (err = device_create_file(&pdev->dev,
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&dev_attr_in4_max)))
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goto exit_remove_files;
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} else {
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if ((err = device_create_file(&new_client->dev,
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if ((err = device_create_file(&pdev->dev,
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&dev_attr_temp1_input))
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|| (err = device_create_file(&new_client->dev,
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|| (err = device_create_file(&pdev->dev,
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&dev_attr_temp1_max))
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|| (err = device_create_file(&new_client->dev,
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|| (err = device_create_file(&pdev->dev,
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&dev_attr_temp1_max_hyst)))
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goto exit_remove_files;
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}
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data->class_dev = hwmon_device_register(&new_client->dev);
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data->class_dev = hwmon_device_register(&pdev->dev);
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if (IS_ERR(data->class_dev)) {
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err = PTR_ERR(data->class_dev);
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goto exit_remove_files;
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@ -638,32 +595,26 @@ static int sis5595_detect(struct i2c_adapter *adapter)
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return 0;
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exit_remove_files:
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sysfs_remove_group(&new_client->dev.kobj, &sis5595_group);
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sysfs_remove_group(&new_client->dev.kobj, &sis5595_group_opt);
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exit_detach:
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i2c_detach_client(new_client);
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sysfs_remove_group(&pdev->dev.kobj, &sis5595_group);
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sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_opt);
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exit_free:
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kfree(data);
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exit_release:
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release_region(address, SIS5595_EXTENT);
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release_region(res->start, SIS5595_EXTENT);
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exit:
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return err;
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}
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static int sis5595_detach_client(struct i2c_client *client)
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static int __devexit sis5595_remove(struct platform_device *pdev)
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{
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struct sis5595_data *data = i2c_get_clientdata(client);
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int err;
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struct sis5595_data *data = platform_get_drvdata(pdev);
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hwmon_device_unregister(data->class_dev);
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sysfs_remove_group(&client->dev.kobj, &sis5595_group);
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sysfs_remove_group(&client->dev.kobj, &sis5595_group_opt);
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if ((err = i2c_detach_client(client)))
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return err;
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release_region(client->addr, SIS5595_EXTENT);
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sysfs_remove_group(&pdev->dev.kobj, &sis5595_group);
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sysfs_remove_group(&pdev->dev.kobj, &sis5595_group_opt);
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release_region(data->addr, SIS5595_EXTENT);
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platform_set_drvdata(pdev, NULL);
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kfree(data);
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return 0;
|
||||
@ -671,41 +622,37 @@ static int sis5595_detach_client(struct i2c_client *client)
|
||||
|
||||
|
||||
/* ISA access must be locked explicitly. */
|
||||
static int sis5595_read_value(struct i2c_client *client, u8 reg)
|
||||
static int sis5595_read_value(struct sis5595_data *data, u8 reg)
|
||||
{
|
||||
int res;
|
||||
|
||||
struct sis5595_data *data = i2c_get_clientdata(client);
|
||||
mutex_lock(&data->lock);
|
||||
outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET);
|
||||
res = inb_p(client->addr + SIS5595_DATA_REG_OFFSET);
|
||||
outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET);
|
||||
res = inb_p(data->addr + SIS5595_DATA_REG_OFFSET);
|
||||
mutex_unlock(&data->lock);
|
||||
return res;
|
||||
}
|
||||
|
||||
static int sis5595_write_value(struct i2c_client *client, u8 reg, u8 value)
|
||||
static void sis5595_write_value(struct sis5595_data *data, u8 reg, u8 value)
|
||||
{
|
||||
struct sis5595_data *data = i2c_get_clientdata(client);
|
||||
mutex_lock(&data->lock);
|
||||
outb_p(reg, client->addr + SIS5595_ADDR_REG_OFFSET);
|
||||
outb_p(value, client->addr + SIS5595_DATA_REG_OFFSET);
|
||||
outb_p(reg, data->addr + SIS5595_ADDR_REG_OFFSET);
|
||||
outb_p(value, data->addr + SIS5595_DATA_REG_OFFSET);
|
||||
mutex_unlock(&data->lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Called when we have found a new SIS5595. */
|
||||
static void sis5595_init_client(struct i2c_client *client)
|
||||
static void __devinit sis5595_init_device(struct sis5595_data *data)
|
||||
{
|
||||
u8 config = sis5595_read_value(client, SIS5595_REG_CONFIG);
|
||||
u8 config = sis5595_read_value(data, SIS5595_REG_CONFIG);
|
||||
if (!(config & 0x01))
|
||||
sis5595_write_value(client, SIS5595_REG_CONFIG,
|
||||
sis5595_write_value(data, SIS5595_REG_CONFIG,
|
||||
(config & 0xf7) | 0x01);
|
||||
}
|
||||
|
||||
static struct sis5595_data *sis5595_update_device(struct device *dev)
|
||||
{
|
||||
struct i2c_client *client = to_i2c_client(dev);
|
||||
struct sis5595_data *data = i2c_get_clientdata(client);
|
||||
struct sis5595_data *data = dev_get_drvdata(dev);
|
||||
int i;
|
||||
|
||||
mutex_lock(&data->update_lock);
|
||||
@ -715,35 +662,35 @@ static struct sis5595_data *sis5595_update_device(struct device *dev)
|
||||
|
||||
for (i = 0; i <= data->maxins; i++) {
|
||||
data->in[i] =
|
||||
sis5595_read_value(client, SIS5595_REG_IN(i));
|
||||
sis5595_read_value(data, SIS5595_REG_IN(i));
|
||||
data->in_min[i] =
|
||||
sis5595_read_value(client,
|
||||
sis5595_read_value(data,
|
||||
SIS5595_REG_IN_MIN(i));
|
||||
data->in_max[i] =
|
||||
sis5595_read_value(client,
|
||||
sis5595_read_value(data,
|
||||
SIS5595_REG_IN_MAX(i));
|
||||
}
|
||||
for (i = 0; i < 2; i++) {
|
||||
data->fan[i] =
|
||||
sis5595_read_value(client, SIS5595_REG_FAN(i));
|
||||
sis5595_read_value(data, SIS5595_REG_FAN(i));
|
||||
data->fan_min[i] =
|
||||
sis5595_read_value(client,
|
||||
sis5595_read_value(data,
|
||||
SIS5595_REG_FAN_MIN(i));
|
||||
}
|
||||
if (data->maxins == 3) {
|
||||
data->temp =
|
||||
sis5595_read_value(client, SIS5595_REG_TEMP);
|
||||
sis5595_read_value(data, SIS5595_REG_TEMP);
|
||||
data->temp_over =
|
||||
sis5595_read_value(client, SIS5595_REG_TEMP_OVER);
|
||||
sis5595_read_value(data, SIS5595_REG_TEMP_OVER);
|
||||
data->temp_hyst =
|
||||
sis5595_read_value(client, SIS5595_REG_TEMP_HYST);
|
||||
sis5595_read_value(data, SIS5595_REG_TEMP_HYST);
|
||||
}
|
||||
i = sis5595_read_value(client, SIS5595_REG_FANDIV);
|
||||
i = sis5595_read_value(data, SIS5595_REG_FANDIV);
|
||||
data->fan_div[0] = (i >> 4) & 0x03;
|
||||
data->fan_div[1] = i >> 6;
|
||||
data->alarms =
|
||||
sis5595_read_value(client, SIS5595_REG_ALARM1) |
|
||||
(sis5595_read_value(client, SIS5595_REG_ALARM2) << 8);
|
||||
sis5595_read_value(data, SIS5595_REG_ALARM1) |
|
||||
(sis5595_read_value(data, SIS5595_REG_ALARM2) << 8);
|
||||
data->last_updated = jiffies;
|
||||
data->valid = 1;
|
||||
}
|
||||
@ -774,10 +721,50 @@ static int blacklist[] __devinitdata = {
|
||||
PCI_DEVICE_ID_SI_5598,
|
||||
0 };
|
||||
|
||||
static int __devinit sis5595_device_add(unsigned short address)
|
||||
{
|
||||
struct resource res = {
|
||||
.start = address,
|
||||
.end = address + SIS5595_EXTENT - 1,
|
||||
.name = "sis5595",
|
||||
.flags = IORESOURCE_IO,
|
||||
};
|
||||
int err;
|
||||
|
||||
pdev = platform_device_alloc("sis5595", address);
|
||||
if (!pdev) {
|
||||
err = -ENOMEM;
|
||||
printk(KERN_ERR "sis5595: Device allocation failed\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
err = platform_device_add_resources(pdev, &res, 1);
|
||||
if (err) {
|
||||
printk(KERN_ERR "sis5595: Device resource addition failed "
|
||||
"(%d)\n", err);
|
||||
goto exit_device_put;
|
||||
}
|
||||
|
||||
err = platform_device_add(pdev);
|
||||
if (err) {
|
||||
printk(KERN_ERR "sis5595: Device addition failed (%d)\n",
|
||||
err);
|
||||
goto exit_device_put;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
exit_device_put:
|
||||
platform_device_put(pdev);
|
||||
exit:
|
||||
return err;
|
||||
}
|
||||
|
||||
static int __devinit sis5595_pci_probe(struct pci_dev *dev,
|
||||
const struct pci_device_id *id)
|
||||
{
|
||||
u16 val;
|
||||
u16 address;
|
||||
u8 enable;
|
||||
int *i;
|
||||
|
||||
for (i = blacklist; *i != 0; i++) {
|
||||
@ -790,27 +777,68 @@ static int __devinit sis5595_pci_probe(struct pci_dev *dev,
|
||||
}
|
||||
}
|
||||
|
||||
force_addr &= ~(SIS5595_EXTENT - 1);
|
||||
if (force_addr) {
|
||||
dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", force_addr);
|
||||
pci_write_config_word(dev, SIS5595_BASE_REG, force_addr);
|
||||
}
|
||||
|
||||
if (PCIBIOS_SUCCESSFUL !=
|
||||
pci_read_config_word(dev, SIS5595_BASE_REG, &val))
|
||||
pci_read_config_word(dev, SIS5595_BASE_REG, &address)) {
|
||||
dev_err(&dev->dev, "Failed to read ISA address\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
address = val & ~(SIS5595_EXTENT - 1);
|
||||
if (address == 0 && force_addr == 0) {
|
||||
address &= ~(SIS5595_EXTENT - 1);
|
||||
if (!address) {
|
||||
dev_err(&dev->dev, "Base address not set - upgrade BIOS or use force_addr=0xaddr\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
if (force_addr && address != force_addr) {
|
||||
/* doesn't work for some chips? */
|
||||
dev_err(&dev->dev, "Failed to force ISA address\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
if (PCIBIOS_SUCCESSFUL !=
|
||||
pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable)) {
|
||||
dev_err(&dev->dev, "Failed to read enable register\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
if (!(enable & 0x80)) {
|
||||
if ((PCIBIOS_SUCCESSFUL !=
|
||||
pci_write_config_byte(dev, SIS5595_ENABLE_REG,
|
||||
enable | 0x80))
|
||||
|| (PCIBIOS_SUCCESSFUL !=
|
||||
pci_read_config_byte(dev, SIS5595_ENABLE_REG, &enable))
|
||||
|| (!(enable & 0x80))) {
|
||||
/* doesn't work for some chips! */
|
||||
dev_err(&dev->dev, "Failed to enable HWM device\n");
|
||||
return -ENODEV;
|
||||
}
|
||||
}
|
||||
|
||||
if (platform_driver_register(&sis5595_driver)) {
|
||||
dev_dbg(&dev->dev, "Failed to register sis5595 driver\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
s_bridge = pci_dev_get(dev);
|
||||
if (i2c_isa_add_driver(&sis5595_driver)) {
|
||||
pci_dev_put(s_bridge);
|
||||
s_bridge = NULL;
|
||||
}
|
||||
/* Sets global pdev as a side effect */
|
||||
if (sis5595_device_add(address))
|
||||
goto exit_unregister;
|
||||
|
||||
/* Always return failure here. This is to allow other drivers to bind
|
||||
* to this pci device. We don't really want to have control over the
|
||||
* pci device, we only wanted to read as few register values from it.
|
||||
*/
|
||||
return -ENODEV;
|
||||
|
||||
exit_unregister:
|
||||
pci_dev_put(dev);
|
||||
platform_driver_unregister(&sis5595_driver);
|
||||
exit:
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
static struct pci_driver sis5595_pci_driver = {
|
||||
@ -828,7 +856,8 @@ static void __exit sm_sis5595_exit(void)
|
||||
{
|
||||
pci_unregister_driver(&sis5595_pci_driver);
|
||||
if (s_bridge != NULL) {
|
||||
i2c_isa_del_driver(&sis5595_driver);
|
||||
platform_device_unregister(pdev);
|
||||
platform_driver_unregister(&sis5595_driver);
|
||||
pci_dev_put(s_bridge);
|
||||
s_bridge = NULL;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user