diff options
Diffstat (limited to 'drivers/hwmon/via686a.c')
| -rw-r--r-- | drivers/hwmon/via686a.c | 230 |
1 files changed, 112 insertions, 118 deletions
diff --git a/drivers/hwmon/via686a.c b/drivers/hwmon/via686a.c index a2eddd2c2538..bbaeb808cc15 100644 --- a/drivers/hwmon/via686a.c +++ b/drivers/hwmon/via686a.c @@ -34,6 +34,8 @@ #include <linux/acpi.h> #include <linux/io.h> +#define DRIVER_NAME "via686a" + /* * If force_addr is set to anything different from 0, we forcibly enable * the device at the given address. @@ -304,7 +306,7 @@ struct via686a_data { const char *name; struct device *hwmon_dev; struct mutex update_lock; - char valid; /* !=0 if following fields are valid */ + bool valid; /* true if following fields are valid */ unsigned long last_updated; /* In jiffies */ u8 in[5]; /* Register value */ @@ -321,9 +323,6 @@ struct via686a_data { static struct pci_dev *s_bridge; /* pointer to the (only) via686a */ -static int via686a_probe(struct platform_device *pdev); -static int via686a_remove(struct platform_device *pdev); - static inline int via686a_read_value(struct via686a_data *data, u8 reg) { return inb_p(data->addr + reg); @@ -335,8 +334,76 @@ static inline void via686a_write_value(struct via686a_data *data, u8 reg, outb_p(value, data->addr + reg); } -static struct via686a_data *via686a_update_device(struct device *dev); -static void via686a_init_device(struct via686a_data *data); +static void via686a_update_fan_div(struct via686a_data *data) +{ + int reg = via686a_read_value(data, VIA686A_REG_FANDIV); + data->fan_div[0] = (reg >> 4) & 0x03; + data->fan_div[1] = reg >> 6; +} + +static struct via686a_data *via686a_update_device(struct device *dev) +{ + struct via686a_data *data = dev_get_drvdata(dev); + int i; + + mutex_lock(&data->update_lock); + + if (time_after(jiffies, data->last_updated + HZ + HZ / 2) + || !data->valid) { + for (i = 0; i <= 4; i++) { + data->in[i] = + via686a_read_value(data, VIA686A_REG_IN(i)); + data->in_min[i] = via686a_read_value(data, + VIA686A_REG_IN_MIN + (i)); + data->in_max[i] = + via686a_read_value(data, VIA686A_REG_IN_MAX(i)); + } + for (i = 1; i <= 2; i++) { + data->fan[i - 1] = + via686a_read_value(data, VIA686A_REG_FAN(i)); + data->fan_min[i - 1] = via686a_read_value(data, + VIA686A_REG_FAN_MIN(i)); + } + for (i = 0; i <= 2; i++) { + data->temp[i] = via686a_read_value(data, + VIA686A_REG_TEMP[i]) << 2; + data->temp_over[i] = + via686a_read_value(data, + VIA686A_REG_TEMP_OVER[i]); + data->temp_hyst[i] = + via686a_read_value(data, + VIA686A_REG_TEMP_HYST[i]); + } + /* + * add in lower 2 bits + * temp1 uses bits 7-6 of VIA686A_REG_TEMP_LOW1 + * temp2 uses bits 5-4 of VIA686A_REG_TEMP_LOW23 + * temp3 uses bits 7-6 of VIA686A_REG_TEMP_LOW23 + */ + data->temp[0] |= (via686a_read_value(data, + VIA686A_REG_TEMP_LOW1) + & 0xc0) >> 6; + data->temp[1] |= + (via686a_read_value(data, VIA686A_REG_TEMP_LOW23) & + 0x30) >> 4; + data->temp[2] |= + (via686a_read_value(data, VIA686A_REG_TEMP_LOW23) & + 0xc0) >> 6; + + via686a_update_fan_div(data); + data->alarms = + via686a_read_value(data, + VIA686A_REG_ALARM1) | + (via686a_read_value(data, VIA686A_REG_ALARM2) << 8); + data->last_updated = jiffies; + data->valid = true; + } + + mutex_unlock(&data->update_lock); + + return data; +} /* following are the sysfs callback functions */ @@ -654,13 +721,23 @@ static const struct attribute_group via686a_group = { .attrs = via686a_attributes, }; -static struct platform_driver via686a_driver = { - .driver = { - .name = "via686a", - }, - .probe = via686a_probe, - .remove = via686a_remove, -}; +static void via686a_init_device(struct via686a_data *data) +{ + u8 reg; + + /* Start monitoring */ + reg = via686a_read_value(data, VIA686A_REG_CONFIG); + via686a_write_value(data, VIA686A_REG_CONFIG, (reg | 0x01) & 0x7F); + + /* Configure temp interrupt mode for continuous-interrupt operation */ + reg = via686a_read_value(data, VIA686A_REG_TEMP_MODE); + via686a_write_value(data, VIA686A_REG_TEMP_MODE, + (reg & ~VIA686A_TEMP_MODE_MASK) + | VIA686A_TEMP_MODE_CONTINUOUS); + + /* Pre-read fan clock divisor values */ + via686a_update_fan_div(data); +} /* This is called when the module is loaded */ static int via686a_probe(struct platform_device *pdev) @@ -672,7 +749,7 @@ static int via686a_probe(struct platform_device *pdev) /* Reserve the ISA region */ res = platform_get_resource(pdev, IORESOURCE_IO, 0); if (!devm_request_region(&pdev->dev, res->start, VIA686A_EXTENT, - via686a_driver.driver.name)) { + DRIVER_NAME)) { dev_err(&pdev->dev, "Region 0x%lx-0x%lx already in use!\n", (unsigned long)res->start, (unsigned long)res->end); return -ENODEV; @@ -685,7 +762,7 @@ static int via686a_probe(struct platform_device *pdev) platform_set_drvdata(pdev, data); data->addr = res->start; - data->name = "via686a"; + data->name = DRIVER_NAME; mutex_init(&data->update_lock); /* Initialize the VIA686A chip */ @@ -709,104 +786,21 @@ exit_remove_files: return err; } -static int via686a_remove(struct platform_device *pdev) +static void via686a_remove(struct platform_device *pdev) { struct via686a_data *data = platform_get_drvdata(pdev); hwmon_device_unregister(data->hwmon_dev); sysfs_remove_group(&pdev->dev.kobj, &via686a_group); - - return 0; -} - -static void via686a_update_fan_div(struct via686a_data *data) -{ - int reg = via686a_read_value(data, VIA686A_REG_FANDIV); - data->fan_div[0] = (reg >> 4) & 0x03; - data->fan_div[1] = reg >> 6; } -static void via686a_init_device(struct via686a_data *data) -{ - u8 reg; - - /* Start monitoring */ - reg = via686a_read_value(data, VIA686A_REG_CONFIG); - via686a_write_value(data, VIA686A_REG_CONFIG, (reg | 0x01) & 0x7F); - - /* Configure temp interrupt mode for continuous-interrupt operation */ - reg = via686a_read_value(data, VIA686A_REG_TEMP_MODE); - via686a_write_value(data, VIA686A_REG_TEMP_MODE, - (reg & ~VIA686A_TEMP_MODE_MASK) - | VIA686A_TEMP_MODE_CONTINUOUS); - - /* Pre-read fan clock divisor values */ - via686a_update_fan_div(data); -} - -static struct via686a_data *via686a_update_device(struct device *dev) -{ - struct via686a_data *data = dev_get_drvdata(dev); - int i; - - mutex_lock(&data->update_lock); - - if (time_after(jiffies, data->last_updated + HZ + HZ / 2) - || !data->valid) { - for (i = 0; i <= 4; i++) { - data->in[i] = - via686a_read_value(data, VIA686A_REG_IN(i)); - data->in_min[i] = via686a_read_value(data, - VIA686A_REG_IN_MIN - (i)); - data->in_max[i] = - via686a_read_value(data, VIA686A_REG_IN_MAX(i)); - } - for (i = 1; i <= 2; i++) { - data->fan[i - 1] = - via686a_read_value(data, VIA686A_REG_FAN(i)); - data->fan_min[i - 1] = via686a_read_value(data, - VIA686A_REG_FAN_MIN(i)); - } - for (i = 0; i <= 2; i++) { - data->temp[i] = via686a_read_value(data, - VIA686A_REG_TEMP[i]) << 2; - data->temp_over[i] = - via686a_read_value(data, - VIA686A_REG_TEMP_OVER[i]); - data->temp_hyst[i] = - via686a_read_value(data, - VIA686A_REG_TEMP_HYST[i]); - } - /* - * add in lower 2 bits - * temp1 uses bits 7-6 of VIA686A_REG_TEMP_LOW1 - * temp2 uses bits 5-4 of VIA686A_REG_TEMP_LOW23 - * temp3 uses bits 7-6 of VIA686A_REG_TEMP_LOW23 - */ - data->temp[0] |= (via686a_read_value(data, - VIA686A_REG_TEMP_LOW1) - & 0xc0) >> 6; - data->temp[1] |= - (via686a_read_value(data, VIA686A_REG_TEMP_LOW23) & - 0x30) >> 4; - data->temp[2] |= - (via686a_read_value(data, VIA686A_REG_TEMP_LOW23) & - 0xc0) >> 6; - - via686a_update_fan_div(data); - data->alarms = - via686a_read_value(data, - VIA686A_REG_ALARM1) | - (via686a_read_value(data, VIA686A_REG_ALARM2) << 8); - data->last_updated = jiffies; - data->valid = 1; - } - - mutex_unlock(&data->update_lock); - - return data; -} +static struct platform_driver via686a_driver = { + .driver = { + .name = DRIVER_NAME, + }, + .probe = via686a_probe, + .remove = via686a_remove, +}; static const struct pci_device_id via686a_pci_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4) }, @@ -819,7 +813,7 @@ static int via686a_device_add(unsigned short address) struct resource res = { .start = address, .end = address + VIA686A_EXTENT - 1, - .name = "via686a", + .name = DRIVER_NAME, .flags = IORESOURCE_IO, }; int err; @@ -828,7 +822,7 @@ static int via686a_device_add(unsigned short address) if (err) goto exit; - pdev = platform_device_alloc("via686a", address); + pdev = platform_device_alloc(DRIVER_NAME, address); if (!pdev) { err = -ENOMEM; pr_err("Device allocation failed\n"); @@ -859,16 +853,17 @@ static int via686a_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) { u16 address, val; + int ret; if (force_addr) { address = force_addr & ~(VIA686A_EXTENT - 1); dev_warn(&dev->dev, "Forcing ISA address 0x%x\n", address); - if (PCIBIOS_SUCCESSFUL != - pci_write_config_word(dev, VIA686A_BASE_REG, address | 1)) + ret = pci_write_config_word(dev, VIA686A_BASE_REG, address | 1); + if (ret != PCIBIOS_SUCCESSFUL) return -ENODEV; } - if (PCIBIOS_SUCCESSFUL != - pci_read_config_word(dev, VIA686A_BASE_REG, &val)) + ret = pci_read_config_word(dev, VIA686A_BASE_REG, &val); + if (ret != PCIBIOS_SUCCESSFUL) return -ENODEV; address = val & ~(VIA686A_EXTENT - 1); @@ -878,8 +873,8 @@ static int via686a_pci_probe(struct pci_dev *dev, return -ENODEV; } - if (PCIBIOS_SUCCESSFUL != - pci_read_config_word(dev, VIA686A_ENABLE_REG, &val)) + ret = pci_read_config_word(dev, VIA686A_ENABLE_REG, &val); + if (ret != PCIBIOS_SUCCESSFUL) return -ENODEV; if (!(val & 0x0001)) { if (!force_addr) { @@ -890,9 +885,8 @@ static int via686a_pci_probe(struct pci_dev *dev, } dev_warn(&dev->dev, "Enabling sensors\n"); - if (PCIBIOS_SUCCESSFUL != - pci_write_config_word(dev, VIA686A_ENABLE_REG, - val | 0x0001)) + ret = pci_write_config_word(dev, VIA686A_ENABLE_REG, val | 0x1); + if (ret != PCIBIOS_SUCCESSFUL) return -ENODEV; } @@ -918,7 +912,7 @@ exit: } static struct pci_driver via686a_pci_driver = { - .name = "via686a", + .name = DRIVER_NAME, .id_table = via686a_pci_ids, .probe = via686a_pci_probe, }; |