diff options
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/hwmon/w83781d.c | 571 |
2 files changed, 377 insertions, 195 deletions
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index 1691c6c..065851a 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -523,7 +523,6 @@ config SENSORS_VT8231 config SENSORS_W83781D tristate "Winbond W83781D, W83782D, W83783S, W83627HF, Asus AS99127F" depends on HWMON && I2C - select I2C_ISA select HWMON_VID help If you say yes here you get support for the Winbond W8378x series diff --git a/drivers/hwmon/w83781d.c b/drivers/hwmon/w83781d.c index a47da3e..96338dd 100644 --- a/drivers/hwmon/w83781d.c +++ b/drivers/hwmon/w83781d.c @@ -2,8 +2,9 @@ w83781d.c - Part of lm_sensors, Linux kernel modules for hardware monitoring Copyright (c) 1998 - 2001 Frodo Looijaard <frodol@dds.nl>, - Philip Edelbrock <phil@netroedge.com>, - and Mark Studebaker <mdsxyz123@yahoo.com> + Philip Edelbrock <phil@netroedge.com>, + and Mark Studebaker <mdsxyz123@yahoo.com> + Copyright (c) 2007 Jean Delvare <khali@linux-fr.org> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -38,7 +39,8 @@ #include <linux/slab.h> #include <linux/jiffies.h> #include <linux/i2c.h> -#include <linux/i2c-isa.h> +#include <linux/platform_device.h> +#include <linux/ioport.h> #include <linux/hwmon.h> #include <linux/hwmon-vid.h> #include <linux/sysfs.h> @@ -47,6 +49,9 @@ #include <asm/io.h> #include "lm75.h" +/* ISA device, if found */ +static struct platform_device *pdev; + /* Addresses to scan */ static unsigned short normal_i2c[] = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, @@ -221,8 +226,8 @@ DIV_TO_REG(long val, enum chips type) a bit - except if there could be more than one SMBus. Groan. No solution for this yet. */ -/* For each registered chip, we need to keep some data in memory. - The structure is dynamically allocated. */ +/* For ISA chips, we abuse the i2c_client addr and name fields. We also use + the driver field to differentiate between I2C and ISA chips. */ struct w83781d_data { struct i2c_client client; struct class_device *class_dev; @@ -263,14 +268,16 @@ struct w83781d_data { }; static int w83781d_attach_adapter(struct i2c_adapter *adapter); -static int w83781d_isa_attach_adapter(struct i2c_adapter *adapter); static int w83781d_detect(struct i2c_adapter *adapter, int address, int kind); static int w83781d_detach_client(struct i2c_client *client); +static int __devinit w83781d_isa_probe(struct platform_device *pdev); +static int __devexit w83781d_isa_remove(struct platform_device *pdev); + static int w83781d_read_value(struct i2c_client *client, u16 reg); static int w83781d_write_value(struct i2c_client *client, u16 reg, u16 value); static struct w83781d_data *w83781d_update_device(struct device *dev); -static void w83781d_init_client(struct i2c_client *client); +static void w83781d_init_device(struct device *dev); static struct i2c_driver w83781d_driver = { .driver = { @@ -281,13 +288,13 @@ static struct i2c_driver w83781d_driver = { .detach_client = w83781d_detach_client, }; -static struct i2c_driver w83781d_isa_driver = { +static struct platform_driver w83781d_isa_driver = { .driver = { .owner = THIS_MODULE, - .name = "w83781d-isa", + .name = "w83781d", }, - .attach_adapter = w83781d_isa_attach_adapter, - .detach_client = w83781d_detach_client, + .probe = w83781d_isa_probe, + .remove = w83781d_isa_remove, }; @@ -305,8 +312,8 @@ show_in_reg(in_max); #define store_in_reg(REG, reg) \ static ssize_t store_in_##reg (struct device *dev, const char *buf, size_t count, int nr) \ { \ - struct i2c_client *client = to_i2c_client(dev); \ - struct w83781d_data *data = i2c_get_clientdata(client); \ + struct w83781d_data *data = dev_get_drvdata(dev); \ + struct i2c_client *client = &data->client; \ u32 val; \ \ val = simple_strtoul(buf, NULL, 10) / 10; \ @@ -368,8 +375,8 @@ show_fan_reg(fan_min); static ssize_t store_fan_min(struct device *dev, const char *buf, size_t count, int nr) { - struct i2c_client *client = to_i2c_client(dev); - struct w83781d_data *data = i2c_get_clientdata(client); + struct w83781d_data *data = dev_get_drvdata(dev); + struct i2c_client *client = &data->client; u32 val; val = simple_strtoul(buf, NULL, 10); @@ -427,8 +434,8 @@ show_temp_reg(temp_max_hyst); #define store_temp_reg(REG, reg) \ static ssize_t store_temp_##reg (struct device *dev, const char *buf, size_t count, int nr) \ { \ - struct i2c_client *client = to_i2c_client(dev); \ - struct w83781d_data *data = i2c_get_clientdata(client); \ + struct w83781d_data *data = dev_get_drvdata(dev); \ + struct i2c_client *client = &data->client; \ s32 val; \ \ val = simple_strtol(buf, NULL, 10); \ @@ -498,8 +505,7 @@ show_vrm_reg(struct device *dev, struct device_attribute *attr, char *buf) static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - struct i2c_client *client = to_i2c_client(dev); - struct w83781d_data *data = i2c_get_clientdata(client); + struct w83781d_data *data = dev_get_drvdata(dev); u32 val; val = simple_strtoul(buf, NULL, 10); @@ -539,8 +545,8 @@ static ssize_t store_beep_reg(struct device *dev, const char *buf, size_t count, int update_mask) { - struct i2c_client *client = to_i2c_client(dev); - struct w83781d_data *data = i2c_get_clientdata(client); + struct w83781d_data *data = dev_get_drvdata(dev); + struct i2c_client *client = &data->client; u32 val, val2; val = simple_strtoul(buf, NULL, 10); @@ -599,8 +605,8 @@ show_fan_div_reg(struct device *dev, char *buf, int nr) static ssize_t store_fan_div_reg(struct device *dev, const char *buf, size_t count, int nr) { - struct i2c_client *client = to_i2c_client(dev); - struct w83781d_data *data = i2c_get_clientdata(client); + struct w83781d_data *data = dev_get_drvdata(dev); + struct i2c_client *client = &data->client; unsigned long min; u8 reg; unsigned long val = simple_strtoul(buf, NULL, 10); @@ -666,8 +672,8 @@ show_pwmenable_reg(struct device *dev, char *buf, int nr) static ssize_t store_pwm_reg(struct device *dev, const char *buf, size_t count, int nr) { - struct i2c_client *client = to_i2c_client(dev); - struct w83781d_data *data = i2c_get_clientdata(client); + struct w83781d_data *data = dev_get_drvdata(dev); + struct i2c_client *client = &data->client; u32 val; val = simple_strtoul(buf, NULL, 10); @@ -682,8 +688,8 @@ store_pwm_reg(struct device *dev, const char *buf, size_t count, int nr) static ssize_t store_pwmenable_reg(struct device *dev, const char *buf, size_t count, int nr) { - struct i2c_client *client = to_i2c_client(dev); - struct w83781d_data *data = i2c_get_clientdata(client); + struct w83781d_data *data = dev_get_drvdata(dev); + struct i2c_client *client = &data->client; u32 val, reg; val = simple_strtoul(buf, NULL, 10); @@ -755,8 +761,8 @@ show_sensor_reg(struct device *dev, char *buf, int nr) static ssize_t store_sensor_reg(struct device *dev, const char *buf, size_t count, int nr) { - struct i2c_client *client = to_i2c_client(dev); - struct w83781d_data *data = i2c_get_clientdata(client); + struct w83781d_data *data = dev_get_drvdata(dev); + struct i2c_client *client = &data->client; u32 val, tmp; val = simple_strtoul(buf, NULL, 10); @@ -813,6 +819,16 @@ sysfs_sensor(1); sysfs_sensor(2); sysfs_sensor(3); +/* 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); + /* This function is called when: * w83781d_driver is inserted (when this module is loaded), for each available adapter @@ -825,12 +841,6 @@ w83781d_attach_adapter(struct i2c_adapter *adapter) return i2c_probe(adapter, &addr_data, w83781d_detect); } -static int -w83781d_isa_attach_adapter(struct i2c_adapter *adapter) -{ - return w83781d_detect(adapter, isa_address, -1); -} - /* Assumes that adapter is of I2C, not ISA variety. * OTHERWISE DON'T CALL THIS */ @@ -994,77 +1004,85 @@ static const struct attribute_group w83781d_group_opt = { .attrs = w83781d_attributes_opt, }; +/* No clean up is done on error, it's up to the caller */ static int -w83781d_detect(struct i2c_adapter *adapter, int address, int kind) +w83781d_create_files(struct device *dev, int kind, int is_isa) { - int i = 0, val1 = 0, val2; - struct i2c_client *client; - struct device *dev; - struct w83781d_data *data; int err; - const char *client_name = ""; - int is_isa = i2c_is_isa_adapter(adapter); - enum vendor { winbond, asus } vendid; - if (!is_isa - && !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { - err = -EINVAL; - goto ERROR0; + if ((err = sysfs_create_group(&dev->kobj, &w83781d_group))) + return err; + + if (kind != w83783s) { + if ((err = device_create_file(dev, &dev_attr_in1_input)) + || (err = device_create_file(dev, &dev_attr_in1_min)) + || (err = device_create_file(dev, &dev_attr_in1_max))) + return err; + } + if (kind != as99127f && kind != w83781d && kind != w83783s) { + if ((err = device_create_file(dev, &dev_attr_in7_input)) + || (err = device_create_file(dev, &dev_attr_in7_min)) + || (err = device_create_file(dev, &dev_attr_in7_max)) + || (err = device_create_file(dev, &dev_attr_in8_input)) + || (err = device_create_file(dev, &dev_attr_in8_min)) + || (err = device_create_file(dev, &dev_attr_in8_max))) + return err; + } + if (kind != w83783s) { + if ((err = device_create_file(dev, &dev_attr_temp3_input)) + || (err = device_create_file(dev, &dev_attr_temp3_max)) + || (err = device_create_file(dev, + &dev_attr_temp3_max_hyst))) + return err; } - /* Prevent users from forcing a kind for a bus it isn't supposed - to possibly be on */ - if (is_isa && (kind == as99127f || kind == w83783s)) { - dev_err(&adapter->dev, - "Cannot force I2C-only chip for ISA address 0x%02x.\n", - address); - err = -EINVAL; - goto ERROR0; + if (kind != w83781d && kind != as99127f) { + if ((err = device_create_file(dev, &dev_attr_pwm1)) + || (err = device_create_file(dev, &dev_attr_pwm2)) + || (err = device_create_file(dev, &dev_attr_pwm2_enable))) + return err; } - - if (is_isa) - if (!request_region(address, W83781D_EXTENT, - w83781d_isa_driver.driver.name)) { - dev_dbg(&adapter->dev, "Request of region " - "0x%x-0x%x for w83781d failed\n", address, - address + W83781D_EXTENT - 1); - err = -EBUSY; - goto ERROR0; + if (kind == w83782d && !is_isa) { + if ((err = device_create_file(dev, &dev_attr_pwm3)) + || (err = device_create_file(dev, &dev_attr_pwm4))) + return err; + } + + if (kind != as99127f && kind != w83781d) { + if ((err = device_create_file(dev, &dev_attr_temp1_type)) + || (err = device_create_file(dev, + &dev_attr_temp2_type))) + return err; + if (kind != w83783s) { + if ((err = device_create_file(dev, + &dev_attr_temp3_type))) + return err; } + } - /* Probe whether there is anything available on this address. Already - done for SMBus clients */ - if (kind < 0) { - if (is_isa) { + if (is_isa) { + err = device_create_file(&pdev->dev, &dev_attr_name); + if (err) + return err; + } -#define REALLY_SLOW_IO - /* We need the timeouts for at least some LM78-like - chips. But only if we read 'undefined' registers. */ - i = inb_p(address + 1); - if (inb_p(address + 2) != i - || inb_p(address + 3) != i - || inb_p(address + 7) != i) { - dev_dbg(&adapter->dev, "Detection of w83781d " - "chip failed at step 1\n"); - err = -ENODEV; - goto ERROR1; - } -#undef REALLY_SLOW_IO + return 0; +} - /* Let's just hope nothing breaks here */ - i = inb_p(address + 5) & 0x7f; - outb_p(~i & 0x7f, address + 5); - val2 = inb_p(address + 5) & 0x7f; - if (val2 != (~i & 0x7f)) { - outb_p(i, address + 5); - dev_dbg(&adapter->dev, "Detection of w83781d " - "chip failed at step 2 (0x%x != " - "0x%x at 0x%x)\n", val2, ~i & 0x7f, - address + 5); - err = -ENODEV; - goto ERROR1; - } - } +static int +w83781d_detect(struct i2c_adapter *adapter, int address, int kind) +{ + int val1 = 0, val2; + struct i2c_client *client; + struct device *dev; + struct w83781d_data *data; + int err; + const char *client_name = ""; + enum vendor { winbond, asus } vendid; + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { + err = -EINVAL; + goto ERROR1; } /* OK. For now, we presume we have a valid client. We now create the @@ -1081,8 +1099,7 @@ w83781d_detect(struct i2c_adapter *adapter, int address, int kind) client->addr = address; mutex_init(&data->lock); client->adapter = adapter; - client->driver = is_isa ? &w83781d_isa_driver : &w83781d_driver; - client->flags = 0; + client->driver = &w83781d_driver; dev = &client->dev; /* Now, we do the remaining detection. */ @@ -1111,8 +1128,8 @@ w83781d_detect(struct i2c_adapter *adapter, int address, int kind) } /* If Winbond SMBus, check address at 0x48. Asus doesn't support, except for as99127f rev.2 */ - if ((!is_isa) && (((!(val1 & 0x80)) && (val2 == 0xa3)) || - ((val1 & 0x80) && (val2 == 0x5c)))) { + if ((!(val1 & 0x80) && (val2 == 0xa3)) || + ((val1 & 0x80) && (val2 == 0x5c))) { if (w83781d_read_value (client, W83781D_REG_I2C_ADDR) != address) { dev_dbg(&adapter->dev, "Detection of w83781d " @@ -1149,12 +1166,11 @@ w83781d_detect(struct i2c_adapter *adapter, int address, int kind) kind = w83781d; else if (val1 == 0x30 && vendid == winbond) kind = w83782d; - else if (val1 == 0x40 && vendid == winbond && !is_isa - && address == 0x2d) + else if (val1 == 0x40 && vendid == winbond && address == 0x2d) kind = w83783s; else if (val1 == 0x21 && vendid == winbond) kind = w83627hf; - else if (val1 == 0x31 && !is_isa && address >= 0x28) + else if (val1 == 0x31 && address >= 0x28) kind = as99127f; else { if (kind == 0) @@ -1182,86 +1198,23 @@ w83781d_detect(struct i2c_adapter *adapter, int address, int kind) strlcpy(client->name, client_name, I2C_NAME_SIZE); data->type = kind; - data->valid = 0; - mutex_init(&data->update_lock); - /* Tell the I2C layer a new client has arrived */ if ((err = i2c_attach_client(client))) goto ERROR2; /* attach secondary i2c lm75-like clients */ - if (!is_isa) { - if ((err = w83781d_detect_subclients(adapter, address, - kind, client))) - goto ERROR3; - } else { - data->lm75[0] = NULL; - data->lm75[1] = NULL; - } + if ((err = w83781d_detect_subclients(adapter, address, + kind, client))) + goto ERROR3; /* Initialize the chip */ - w83781d_init_client(client); - - /* A few vars need to be filled upon startup */ - for (i = 1; i <= 3; i++) { - data->fan_min[i - 1] = w83781d_read_value(client, - W83781D_REG_FAN_MIN(i)); - } - if (kind != w83781d && kind != as99127f) - for (i = 0; i < 4; i++) - data->pwmenable[i] = 1; + w83781d_init_device(dev); /* Register sysfs hooks */ - if ((err = sysfs_create_group(&dev->kobj, &w83781d_group))) + err = w83781d_create_files(dev, kind, 0); + if (err) goto ERROR4; - if (kind != w83783s) { - if ((err = device_create_file(dev, &dev_attr_in1_input)) - || (err = device_create_file(dev, &dev_attr_in1_min)) - || (err = device_create_file(dev, &dev_attr_in1_max))) - goto ERROR4; - } - if (kind != as99127f && kind != w83781d && kind != w83783s) { - if ((err = device_create_file(dev, &dev_attr_in7_input)) - || (err = device_create_file(dev, &dev_attr_in7_min)) - || (err = device_create_file(dev, &dev_attr_in7_max)) - || (err = device_create_file(dev, &dev_attr_in8_input)) - || (err = device_create_file(dev, &dev_attr_in8_min)) - || (err = device_create_file(dev, &dev_attr_in8_max))) - goto ERROR4; - } - if (kind != w83783s) { - if ((err = device_create_file(dev, &dev_attr_temp3_input)) - || (err = device_create_file(dev, &dev_attr_temp3_max)) - || (err = device_create_file(dev, - &dev_attr_temp3_max_hyst))) - goto ERROR4; - } - - if (kind != w83781d && kind != as99127f) { - if ((err = device_create_file(dev, &dev_attr_pwm1)) - || (err = device_create_file(dev, &dev_attr_pwm2)) - || (err = device_create_file(dev, &dev_attr_pwm2_enable))) - goto ERROR4; - } - if (kind == w83782d && !is_isa) { - if ((err = device_create_file(dev, &dev_attr_pwm3)) - || (err = device_create_file(dev, &dev_attr_pwm4))) - goto ERROR4; - } - - if (kind != as99127f && kind != w83781d) { - if ((err = device_create_file(dev, &dev_attr_temp1_type)) - || (err = device_create_file(dev, - &dev_attr_temp2_type))) - goto ERROR4; - if (kind != w83783s) { - if ((err = device_create_file(dev, - &dev_attr_temp3_type))) - goto ERROR4; - } - } - data->class_dev = hwmon_device_register(dev); if (IS_ERR(data->class_dev)) { err = PTR_ERR(data->class_dev); @@ -1287,9 +1240,6 @@ ERROR3: ERROR2: kfree(data); ERROR1: - if (is_isa) - release_region(address, W83781D_EXTENT); -ERROR0: return err; } @@ -1305,8 +1255,6 @@ w83781d_detach_client(struct i2c_client *client) sysfs_remove_group(&client->dev.kobj, &w83781d_group); sysfs_remove_group(&client->dev.kobj, &w83781d_group_opt); } - if (i2c_is_isa_client(client)) - release_region(client->addr, W83781D_EXTENT); if ((err = i2c_detach_client(client))) return err; @@ -1322,6 +1270,88 @@ w83781d_detach_client(struct i2c_client *client) 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_EXTENT, "w83781d")) { + err = -EBUSY; + goto exit; + } + + if (!(data = kzalloc(sizeof(struct w83781d_data), GFP_KERNEL))) { + 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->client, W83781D_REG_WCHIPID); + switch (reg) { + case 0x21: + data->type = w83627hf; + name = "w83627hf"; + break; + 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; + + data->class_dev = hwmon_device_register(&pdev->dev); + if (IS_ERR(data->class_dev)) { + err = PTR_ERR(data->class_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_EXTENT); + 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->class_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_EXTENT); + kfree(data); + + return 0; +} + /* 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, @@ -1336,7 +1366,7 @@ w83781d_read_value(struct i2c_client *client, u16 reg) struct i2c_client *cl; mutex_lock(&data->lock); - if (i2c_is_isa_client(client)) { + if (!client->driver) { /* ISA device */ word_sized = (((reg & 0xff00) == 0x100) || ((reg & 0xff00) == 0x200)) && (((reg & 0x00ff) == 0x50) @@ -1405,7 +1435,7 @@ w83781d_write_value(struct i2c_client *client, u16 reg, u16 value) struct i2c_client *cl; mutex_lock(&data->lock); - if (i2c_is_isa_client(client)) { + if (!client->driver) { /* ISA device */ word_sized = (((reg & 0xff00) == 0x100) || ((reg & 0xff00) == 0x200)) && (((reg & 0x00ff) == 0x53) @@ -1462,9 +1492,10 @@ w83781d_write_value(struct i2c_client *client, u16 reg, u16 value) } static void -w83781d_init_client(struct i2c_client *client) +w83781d_init_device(struct device *dev) { - struct w83781d_data *data = i2c_get_clientdata(client); + struct w83781d_data *data = dev_get_drvdata(dev); + struct i2c_client *client = &data->client; int i, p; int type = data->type; u8 tmp; @@ -1477,7 +1508,7 @@ w83781d_init_client(struct i2c_client *client) It might even go away if nobody reports it as being useful, as I see very little reason why this would be needed at all. */ - dev_info(&client->dev, "If reset=1 solved a problem you were " + dev_info(dev, "If reset=1 solved a problem you were " "having, please report!\n"); /* save these registers */ @@ -1527,7 +1558,7 @@ w83781d_init_client(struct i2c_client *client) /* Enable temp2 */ tmp = w83781d_read_value(client, W83781D_REG_TEMP2_CONFIG); if (tmp & 0x01) { - dev_warn(&client->dev, "Enabling temp2, readings " + dev_warn(dev, "Enabling temp2, readings " "might not make sense\n"); w83781d_write_value(client, W83781D_REG_TEMP2_CONFIG, tmp & 0xfe); @@ -1538,7 +1569,7 @@ w83781d_init_client(struct i2c_client *client) tmp = w83781d_read_value(client, W83781D_REG_TEMP3_CONFIG); if (tmp & 0x01) { - dev_warn(&client->dev, "Enabling temp3, " + dev_warn(dev, "Enabling temp3, " "readings might not make sense\n"); w83781d_write_value(client, W83781D_REG_TEMP3_CONFIG, tmp & 0xfe); @@ -1551,12 +1582,23 @@ w83781d_init_client(struct i2c_client *client) (w83781d_read_value(client, W83781D_REG_CONFIG) & 0xf7) | 0x01); + + /* A few vars need to be filled upon startup */ + for (i = 1; i <= 3; i++) { + data->fan_min[i - 1] = w83781d_read_value(client, + W83781D_REG_FAN_MIN(i)); + } + if (type != w83781d && type != as99127f) + for (i = 0; i < 4; i++) + data->pwmenable[i] = 1; + + mutex_init(&data->update_lock); } static struct w83781d_data *w83781d_update_device(struct device *dev) { - struct i2c_client *client = to_i2c_client(dev); - struct w83781d_data *data = i2c_get_clientdata(client); + struct w83781d_data *data = dev_get_drvdata(dev); + struct i2c_client *client = &data->client; int i; mutex_lock(&data->update_lock); @@ -1589,8 +1631,7 @@ static struct w83781d_data *w83781d_update_device(struct device *dev) data->pwm[i - 1] = w83781d_read_value(client, W83781D_REG_PWM(i)); - if ((data->type != w83782d - || i2c_is_isa_client(client)) + if ((data->type != w83782d || !client->driver) && i == 2) break; } @@ -1672,6 +1713,133 @@ static struct w83781d_data *w83781d_update_device(struct device *dev) return data; } +/* return 1 if a supported chip is found, 0 otherwise */ +static int __init +w83781d_isa_found(unsigned short address) +{ + int val, save, found = 0; + + if (!request_region(address, W83781D_EXTENT, "w83781d")) + return 0; + +#define REALLY_SLOW_IO + /* We need the timeouts for at least some W83781D-like + chips. But only if we read 'undefined' registers. */ + val = inb_p(address + 1); + if (inb_p(address + 2) != val + || inb_p(address + 3) != val + || inb_p(address + 7) != val) { + pr_debug("w83781d: Detection failed at step 1\n"); + goto release; + } +#undef REALLY_SLOW_IO + + /* We should be able to change the 7 LSB of the address port. The + MSB (busy flag) should be clear initially, set after the write. */ + save = inb_p(address + W83781D_ADDR_REG_OFFSET); + if (save & 0x80) { + pr_debug("w83781d: Detection failed at step 2\n"); + goto release; + } + val = ~save & 0x7f; + outb_p(val, address + W83781D_ADDR_REG_OFFSET); + if (inb_p(address + W83781D_ADDR_REG_OFFSET) != (val | 0x80)) { + outb_p(save, address + W83781D_ADDR_REG_OFFSET); + pr_debug("w83781d: Detection failed at step 3\n"); + goto release; + } + + /* We found a device, now see if it could be a W83781D */ + outb_p(W83781D_REG_CONFIG, address + W83781D_ADDR_REG_OFFSET); + val = inb_p(address + W83781D_DATA_REG_OFFSET); + if (val & 0x80) { + pr_debug("w83781d: Detection failed at step 4\n"); + goto release; + } + outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET); + save = inb_p(address + W83781D_DATA_REG_OFFSET); + outb_p(W83781D_REG_CHIPMAN, address + W83781D_ADDR_REG_OFFSET); + val = inb_p(address + W83781D_DATA_REG_OFFSET); + if ((!(save & 0x80) && (val != 0xa3)) + || ((save & 0x80) && (val != 0x5c))) { + pr_debug("w83781d: Detection failed at step 5\n"); + goto release; + } + outb_p(W83781D_REG_I2C_ADDR, address + W83781D_ADDR_REG_OFFSET); + val = inb_p(address + W83781D_DATA_REG_OFFSET); + if (val < 0x03 || val > 0x77) { /* Not a valid I2C address */ + pr_debug("w83781d: Detection failed at step 6\n"); + goto release; + } + + /* The busy flag should be clear again */ + if (inb_p(address + W83781D_ADDR_REG_OFFSET) & 0x80) { + pr_debug("w83781d: Detection failed at step 7\n"); + goto release; + } + + /* Determine the chip type */ + outb_p(W83781D_REG_BANK, address + W83781D_ADDR_REG_OFFSET); + save = inb_p(address + W83781D_DATA_REG_OFFSET); + outb_p(save & 0xf8, address + W83781D_DATA_REG_OFFSET); + outb_p(W83781D_REG_WCHIPID, address + W83781D_ADDR_REG_OFFSET); + val = inb_p(address + W83781D_DATA_REG_OFFSET); + if ((val & 0xfe) == 0x10 /* W83781D */ + || val == 0x30 /* W83782D */ + || val == 0x21) /* W83627HF */ + found = 1; + + if (found) + pr_info("w83781d: Found a %s chip at %#x\n", + val == 0x21 ? "W83627HF" : + val == 0x30 ? "W83782D" : "W83781D", (int)address); + + release: + release_region(address, W83781D_EXTENT); + return found; +} + +static int __init +w83781d_isa_device_add(unsigned short address) +{ + struct resource res = { + .start = address, + .end = address + W83781D_EXTENT, + .name = "w83781d", + .flags = IORESOURCE_IO, + }; + int err; + + pdev = platform_device_alloc("w83781d", address); + if (!pdev) { + err = -ENOMEM; + printk(KERN_ERR "w83781d: Device allocation failed\n"); + goto exit; + } + + err = platform_device_add_resources(pdev, &res, 1); + if (err) { + printk(KERN_ERR "w83781d: Device resource addition failed " + "(%d)\n", err); + goto exit_device_put; + } + + err = platform_device_add(pdev); + if (err) { + printk(KERN_ERR "w83781d: Device addition failed (%d)\n", + err); + goto exit_device_put; + } + + return 0; + + exit_device_put: + platform_device_put(pdev); + exit: + pdev = NULL; + return err; +} + static int __init sensors_w83781d_init(void) { @@ -1679,21 +1847,36 @@ sensors_w83781d_init(void) res = i2c_add_driver(&w83781d_driver); if (res) - return res; + goto exit; + + if (w83781d_isa_found(isa_address)) { + res = platform_driver_register(&w83781d_isa_driver); + if (res) + goto exit_unreg_i2c_driver; - /* Don't exit if this one fails, we still want the I2C variants - to work! */ - if (i2c_isa_add_driver(&w83781d_isa_driver)) - isa_address = 0; + /* Sets global pdev as a side effect */ + res = w83781d_isa_device_add(isa_address); + if (res) + goto exit_unreg_isa_driver; + } return 0; + + exit_unreg_isa_driver: + platform_driver_unregister(&w83781d_isa_driver); + exit_unreg_i2c_driver: + i2c_del_driver(&w83781d_driver); + exit: + return res; } static void __exit sensors_w83781d_exit(void) { - if (isa_address) - i2c_isa_del_driver(&w83781d_isa_driver); + if (pdev) { + platform_device_unregister(pdev); + platform_driver_unregister(&w83781d_isa_driver); + } i2c_del_driver(&w83781d_driver); } |