From 360782dde00a2e6e7d9fd57535f90934707ab8a8 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Fri, 17 Oct 2008 17:51:19 +0200 Subject: hwmon: (w83781d) Stop abusing struct i2c_client for ISA devices Upcoming changes to the I2C part of the w83781d driver will cause ISA devices to no longer have a struct i2c_client at hand. So, we must stop (ab)using it now. Signed-off-by: Jean Delvare Cc: Wolfgang Grandegger --- drivers/hwmon/w83781d.c | 63 ++++++++++++++++++++----------------------------- 1 file changed, 26 insertions(+), 37 deletions(-) (limited to 'drivers/hwmon') diff --git a/drivers/hwmon/w83781d.c b/drivers/hwmon/w83781d.c index 1a729a74927..50580c88305 100644 --- a/drivers/hwmon/w83781d.c +++ b/drivers/hwmon/w83781d.c @@ -4,7 +4,7 @@ Copyright (c) 1998 - 2001 Frodo Looijaard , Philip Edelbrock , and Mark Studebaker - Copyright (c) 2007 Jean Delvare + Copyright (c) 2007 - 2008 Jean Delvare 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 @@ -198,22 +198,16 @@ DIV_TO_REG(long val, enum chips type) return i; } -/* There are some complications in a module like this. First off, W83781D chips - may be both present on the SMBus and the ISA bus, and we have to handle - those cases separately at some places. Second, there might be several - W83781D chips available (well, actually, that is probably never done; but - it is a clean illustration of how to handle a case like that). Finally, - a specific chip may be attached to *both* ISA and SMBus, and we would - not like to detect it double. */ - -/* 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 device *hwmon_dev; struct mutex lock; enum chips type; + /* For ISA device only */ + const char *name; + int isa_addr; + struct mutex update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ @@ -1625,7 +1619,7 @@ 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); + return sprintf(buf, "%s\n", data->name); } static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); @@ -1671,7 +1665,6 @@ static int w83781d_alias_detect(struct i2c_client *client, u8 chipid) 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) @@ -1681,23 +1674,23 @@ w83781d_read_value_isa(struct w83781d_data *data, u16 reg) || ((reg & 0x00ff) == 0x55)); if (reg & 0xff00) { outb_p(W83781D_REG_BANK, - client->addr + W83781D_ADDR_REG_OFFSET); + data->isa_addr + W83781D_ADDR_REG_OFFSET); outb_p(reg >> 8, - client->addr + W83781D_DATA_REG_OFFSET); + data->isa_addr + W83781D_DATA_REG_OFFSET); } - outb_p(reg & 0xff, client->addr + W83781D_ADDR_REG_OFFSET); - res = inb_p(client->addr + W83781D_DATA_REG_OFFSET); + outb_p(reg & 0xff, data->isa_addr + W83781D_ADDR_REG_OFFSET); + res = inb_p(data->isa_addr + W83781D_DATA_REG_OFFSET); if (word_sized) { outb_p((reg & 0xff) + 1, - client->addr + W83781D_ADDR_REG_OFFSET); + data->isa_addr + W83781D_ADDR_REG_OFFSET); res = - (res << 8) + inb_p(client->addr + + (res << 8) + inb_p(data->isa_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); + data->isa_addr + W83781D_ADDR_REG_OFFSET); + outb_p(0, data->isa_addr + W83781D_DATA_REG_OFFSET); } return res; } @@ -1705,7 +1698,6 @@ w83781d_read_value_isa(struct w83781d_data *data, u16 reg) 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) @@ -1714,22 +1706,22 @@ w83781d_write_value_isa(struct w83781d_data *data, u16 reg, u16 value) || ((reg & 0x00ff) == 0x55)); if (reg & 0xff00) { outb_p(W83781D_REG_BANK, - client->addr + W83781D_ADDR_REG_OFFSET); + data->isa_addr + W83781D_ADDR_REG_OFFSET); outb_p(reg >> 8, - client->addr + W83781D_DATA_REG_OFFSET); + data->isa_addr + W83781D_DATA_REG_OFFSET); } - outb_p(reg & 0xff, client->addr + W83781D_ADDR_REG_OFFSET); + outb_p(reg & 0xff, data->isa_addr + W83781D_ADDR_REG_OFFSET); if (word_sized) { outb_p(value >> 8, - client->addr + W83781D_DATA_REG_OFFSET); + data->isa_addr + W83781D_DATA_REG_OFFSET); outb_p((reg & 0xff) + 1, - client->addr + W83781D_ADDR_REG_OFFSET); + data->isa_addr + W83781D_ADDR_REG_OFFSET); } - outb_p(value & 0xff, client->addr + W83781D_DATA_REG_OFFSET); + outb_p(value & 0xff, data->isa_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); + data->isa_addr + W83781D_ADDR_REG_OFFSET); + outb_p(0, data->isa_addr + W83781D_DATA_REG_OFFSET); } } @@ -1774,7 +1766,6 @@ 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); @@ -1790,21 +1781,19 @@ w83781d_isa_probe(struct platform_device *pdev) goto exit_release_region; } mutex_init(&data->lock); - data->client.addr = res->start; - i2c_set_clientdata(&data->client, data); + data->isa_addr = res->start; platform_set_drvdata(pdev, data); reg = w83781d_read_value(data, W83781D_REG_WCHIPID); switch (reg) { case 0x30: data->type = w83782d; - name = "w83782d"; + data->name = "w83782d"; break; default: data->type = w83781d; - name = "w83781d"; + data->name = "w83781d"; } - strlcpy(data->client.name, name, I2C_NAME_SIZE); /* Initialize the W83781D chip */ w83781d_init_device(&pdev->dev); @@ -1846,7 +1835,7 @@ w83781d_isa_remove(struct platform_device *pdev) 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); + release_region(data->isa_addr + W83781D_ADDR_REG_OFFSET, 2); kfree(data); return 0; -- cgit v1.2.3