Some preliminary cleanups to the w83627hf hardware monitoring driver,
to make its conversion to a platform driver easier:
* Add missing include ioport.h
* Drop unused enum value any_chip
* Group module parameters
* Define and use DRVNAME
* Drop unused struct member lm75
* Move the handling of force_addr and device activation to
w83627hf_find
* Consistently use local type in w83627hf_init_client
Signed-off-by: Jean Delvare <khali at linux-fr.org>
---
drivers/hwmon/w83627hf.c | 76 ++++++++++++++++++++++------------------------
1 file changed, 36 insertions(+), 40 deletions(-)
--- linux-2.6.21-rc3.orig/drivers/hwmon/w83627hf.c 2007-03-11 08:46:28.000000000 +0100
+++ linux-2.6.21-rc3/drivers/hwmon/w83627hf.c 2007-03-11 09:49:13.000000000 +0100
@@ -48,9 +48,16 @@
#include <linux/hwmon-vid.h>
#include <linux/err.h>
#include <linux/mutex.h>
+#include <linux/ioport.h>
#include <asm/io.h>
#include "lm75.h"
+/* The actual ISA address is read from Super-I/O configuration space */
+static unsigned short address;
+
+#define DRVNAME "w83627hf"
+enum chips { w83627hf, w83627thf, w83697hf, w83637hf, w83687thf };
+
static u16 force_addr;
module_param(force_addr, ushort, 0);
MODULE_PARM_DESC(force_addr,
@@ -60,12 +67,6 @@ module_param(force_i2c, byte, 0);
MODULE_PARM_DESC(force_i2c,
"Initialize the i2c address of the sensors");
-/* The actual ISA address is read from Super-I/O configuration space */
-static unsigned short address;
-
-/* Insmod parameters */
-enum chips { any_chip, w83627hf, w83627thf, w83697hf, w83637hf, w83687thf };
-
static int reset;
module_param(reset, bool, 0);
MODULE_PARM_DESC(reset, "Set to one to reset chip on load");
@@ -298,9 +299,6 @@ struct w83627hf_data {
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
- struct i2c_client *lm75; /* for secondary I2C addresses */
- /* pointer to array of 2 subclients */
-
u8 in[9]; /* Register value */
u8 in_max[9]; /* Register value */
u8 in_min[9]; /* Register value */
@@ -339,7 +337,7 @@ static void w83627hf_init_client(struct
static struct i2c_driver w83627hf_driver = {
.driver = {
.owner = THIS_MODULE,
- .name = "w83627hf",
+ .name = DRVNAME,
},
.attach_adapter = w83627hf_detect,
.detach_client = w83627hf_detach_client,
@@ -931,6 +929,7 @@ sysfs_sensor(3);
static int __init w83627hf_find(int sioaddr, unsigned short *addr)
{
+ int err = -ENODEV;
u16 val;
REG = sioaddr;
@@ -943,21 +942,37 @@ static int __init w83627hf_find(int sioa
val != W697_DEVID &&
val != W637_DEVID &&
val != W687THF_DEVID) {
- superio_exit();
- return -ENODEV;
+ goto exit;
}
superio_select(W83627HF_LD_HWM);
+ force_addr &= WINB_ALIGNMENT;
+ if (force_addr) {
+ printk(KERN_WARNING DRVNAME ": Forcing address 0x%x\n",
+ force_addr);
+ superio_outb(WINB_BASE_REG, force_addr >> 8);
+ superio_outb(WINB_BASE_REG + 1, force_addr & 0xff);
+ }
val = (superio_inb(WINB_BASE_REG) << 8) |
superio_inb(WINB_BASE_REG + 1);
*addr = val & WINB_ALIGNMENT;
- if (*addr == 0 && force_addr == 0) {
- superio_exit();
- return -ENODEV;
+ if (*addr == 0) {
+ printk(KERN_WARNING DRVNAME ": Base address not set, "
+ "skipping\n");
+ goto exit;
+ }
+
+ val = superio_inb(WINB_ACT_REG);
+ if (!(val & 0x01)) {
+ printk(KERN_WARNING DRVNAME ": Enabling HWM logical device\n");
+ superio_outb(WINB_ACT_REG, val | 0x01);
}
+ err = 0;
+
+ exit:
superio_exit();
- return 0;
+ return err;
}
static struct attribute *w83627hf_attributes[] = {
@@ -1047,24 +1062,12 @@ static int w83627hf_detect(struct i2c_ad
int err = 0;
const char *client_name = "";
- if(force_addr)
- address = force_addr & WINB_ALIGNMENT;
-
if (!request_region(address + WINB_REGION_OFFSET, WINB_REGION_SIZE,
w83627hf_driver.driver.name)) {
err = -EBUSY;
goto ERROR0;
}
- if(force_addr) {
- printk("w83627hf.o: forcing ISA address 0x%04X\n", address);
- superio_enter();
- superio_select(W83627HF_LD_HWM);
- superio_outb(WINB_BASE_REG, address >> 8);
- superio_outb(WINB_BASE_REG+1, address & 0xff);
- superio_exit();
- }
-
superio_enter();
val= superio_inb(DEVID);
if(val == W627_DEVID)
@@ -1082,10 +1085,6 @@ static int w83627hf_detect(struct i2c_ad
"Unsupported chip (dev_id=0x%02X).\n", val);
goto ERROR1;
}
-
- superio_select(W83627HF_LD_HWM);
- if((val = 0x01 & superio_inb(WINB_ACT_REG)) == 0)
- superio_outb(WINB_ACT_REG, 1);
superio_exit();
/* OK. For now, we presume we have a valid client. We now create the
@@ -1128,8 +1127,6 @@ static int w83627hf_detect(struct i2c_ad
if ((err = i2c_attach_client(new_client)))
goto ERROR2;
- data->lm75 = NULL;
-
/* Initialize the chip */
w83627hf_init_client(new_client);
@@ -1374,7 +1371,7 @@ static void w83627hf_init_client(struct
{
struct w83627hf_data *data = i2c_get_clientdata(client);
int i;
- int type = data->type;
+ enum chips type = data->type;
u8 tmp;
if (reset) {
@@ -1407,19 +1404,18 @@ static void w83627hf_init_client(struct
w83627hf_write_value(client, W83781D_REG_I2C_ADDR, force_i2c);
/* Read VID only once */
- if (w83627hf == data->type || w83637hf == data->type) {
+ if (type == w83627hf || type == w83637hf) {
int lo = w83627hf_read_value(client, W83781D_REG_VID_FANDIV);
int hi = w83627hf_read_value(client, W83781D_REG_CHIPID);
data->vid = (lo & 0x0f) | ((hi & 0x01) << 4);
- } else if (w83627thf == data->type) {
+ } else if (type == w83627thf) {
data->vid = w83627thf_read_gpio5(client);
- } else if (w83687thf == data->type) {
+ } else if (type == w83687thf) {
data->vid = w83687thf_read_vid(client);
}
/* Read VRM & OVT Config only once */
- if (w83627thf == data->type || w83637hf == data->type
- || w83687thf == data->type) {
+ if (type == w83627thf || type == w83637hf || type == w83687thf) {
data->vrm_ovt =
w83627hf_read_value(client, W83627THF_REG_VRM_OVT_CFG);
}
--
Jean Delvare
