[PATCH] I2C: Move hwmon drivers (2/3)

Part 2: Move the driver files themselves.

Note that the patch "adds trailing whitespace", because it does move the
files as-is, and some files happen to have trailing whitespace.

From: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 593 deletions

diff --git a/drivers/i2c/chips/smsc47m1.c b/drivers/i2c/chips/smsc47m1.c
deleted file mode 100644
index 897117a7213..00000000000
--- a/drivers/i2c/chips/smsc47m1.c
+++ /dev/null
@@ -1,593 +0,0 @@
-/*
-    smsc47m1.c - Part of lm_sensors, Linux kernel modules
-                 for hardware monitoring
-
-    Supports the SMSC LPC47B27x, LPC47M10x, LPC47M13x and LPC47M14x
-    Super-I/O chips.
-
-    Copyright (C) 2002 Mark D. Studebaker <mdsxyz123@yahoo.com>
-    Copyright (C) 2004 Jean Delvare <khali@linux-fr.org>
-    Ported to Linux 2.6 by Gabriele Gorla <gorlik@yahoo.com>
-                        and 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
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/ioport.h>
-#include <linux/jiffies.h>
-#include <linux/i2c.h>
-#include <linux/i2c-sensor.h>
-#include <linux/init.h>
-#include <asm/io.h>
-
-static unsigned short normal_i2c[] = { I2C_CLIENT_END };
-/* Address is autodetected, there is no default value */
-static unsigned int normal_isa[] = { 0x0000, I2C_CLIENT_ISA_END };
-static struct i2c_force_data forces[] = {{NULL}};
-
-enum chips { any_chip, smsc47m1 };
-static struct i2c_address_data addr_data = {
-	.normal_i2c		= normal_i2c,
-	.normal_isa		= normal_isa,
-	.forces			= forces,
-};
-
-/* Super-I/0 registers and commands */
-
-#define	REG	0x2e	/* The register to read/write */
-#define	VAL	0x2f	/* The value to read/write */
-
-static inline void
-superio_outb(int reg, int val)
-{
-	outb(reg, REG);
-	outb(val, VAL);
-}
-
-static inline int
-superio_inb(int reg)
-{
-	outb(reg, REG);
-	return inb(VAL);
-}
-
-/* logical device for fans is 0x0A */
-#define superio_select() superio_outb(0x07, 0x0A)
-
-static inline void
-superio_enter(void)
-{
-	outb(0x55, REG);
-}
-
-static inline void
-superio_exit(void)
-{
-	outb(0xAA, REG);
-}
-
-#define SUPERIO_REG_ACT		0x30
-#define SUPERIO_REG_BASE	0x60
-#define SUPERIO_REG_DEVID	0x20
-
-/* Logical device registers */
-
-#define SMSC_EXTENT		0x80
-
-/* nr is 0 or 1 in the macros below */
-#define SMSC47M1_REG_ALARM		0x04
-#define SMSC47M1_REG_TPIN(nr)		(0x34 - (nr))
-#define SMSC47M1_REG_PPIN(nr)		(0x36 - (nr))
-#define SMSC47M1_REG_PWM(nr)		(0x56 + (nr))
-#define SMSC47M1_REG_FANDIV		0x58
-#define SMSC47M1_REG_FAN(nr)		(0x59 + (nr))
-#define SMSC47M1_REG_FAN_PRELOAD(nr)	(0x5B + (nr))
-
-#define MIN_FROM_REG(reg,div)		((reg)>=192 ? 0 : \
-					 983040/((192-(reg))*(div)))
-#define FAN_FROM_REG(reg,div,preload)	((reg)<=(preload) || (reg)==255 ? 0 : \
-					 983040/(((reg)-(preload))*(div)))
-#define DIV_FROM_REG(reg)		(1 << (reg))
-#define PWM_FROM_REG(reg)		(((reg) & 0x7E) << 1)
-#define PWM_EN_FROM_REG(reg)		((~(reg)) & 0x01)
-#define PWM_TO_REG(reg)			(((reg) >> 1) & 0x7E)
-
-struct smsc47m1_data {
-	struct i2c_client client;
-	struct semaphore lock;
-
-	struct semaphore update_lock;
-	unsigned long last_updated;	/* In jiffies */
-
-	u8 fan[2];		/* Register value */
-	u8 fan_preload[2];	/* Register value */
-	u8 fan_div[2];		/* Register encoding, shifted right */
-	u8 alarms;		/* Register encoding */
-	u8 pwm[2];		/* Register value (bit 7 is enable) */
-};
-
-
-static int smsc47m1_attach_adapter(struct i2c_adapter *adapter);
-static int smsc47m1_find(int *address);
-static int smsc47m1_detect(struct i2c_adapter *adapter, int address, int kind);
-static int smsc47m1_detach_client(struct i2c_client *client);
-
-static int smsc47m1_read_value(struct i2c_client *client, u8 reg);
-static void smsc47m1_write_value(struct i2c_client *client, u8 reg, u8 value);
-
-static struct smsc47m1_data *smsc47m1_update_device(struct device *dev,
-		int init);
-
-
-static struct i2c_driver smsc47m1_driver = {
-	.owner		= THIS_MODULE,
-	.name		= "smsc47m1",
-	.id		= I2C_DRIVERID_SMSC47M1,
-	.flags		= I2C_DF_NOTIFY,
-	.attach_adapter	= smsc47m1_attach_adapter,
-	.detach_client	= smsc47m1_detach_client,
-};
-
-/* nr is 0 or 1 in the callback functions below */
-
-static ssize_t get_fan(struct device *dev, char *buf, int nr)
-{
-	struct smsc47m1_data *data = smsc47m1_update_device(dev, 0);
-	/* This chip (stupidly) stops monitoring fan speed if PWM is
-	   enabled and duty cycle is 0%. This is fine if the monitoring
-	   and control concern the same fan, but troublesome if they are
-	   not (which could as well happen). */
-	int rpm = (data->pwm[nr] & 0x7F) == 0x00 ? 0 :
-		  FAN_FROM_REG(data->fan[nr],
-			       DIV_FROM_REG(data->fan_div[nr]),
-			       data->fan_preload[nr]);
-	return sprintf(buf, "%d\n", rpm);
-}
-
-static ssize_t get_fan_min(struct device *dev, char *buf, int nr)
-{
-	struct smsc47m1_data *data = smsc47m1_update_device(dev, 0);
-	int rpm = MIN_FROM_REG(data->fan_preload[nr],
-			       DIV_FROM_REG(data->fan_div[nr]));
-	return sprintf(buf, "%d\n", rpm);
-}
-
-static ssize_t get_fan_div(struct device *dev, char *buf, int nr)
-{
-	struct smsc47m1_data *data = smsc47m1_update_device(dev, 0);
-	return sprintf(buf, "%d\n", DIV_FROM_REG(data->fan_div[nr]));
-}
-
-static ssize_t get_pwm(struct device *dev, char *buf, int nr)
-{
-	struct smsc47m1_data *data = smsc47m1_update_device(dev, 0);
-	return sprintf(buf, "%d\n", PWM_FROM_REG(data->pwm[nr]));
-}
-
-static ssize_t get_pwm_en(struct device *dev, char *buf, int nr)
-{
-	struct smsc47m1_data *data = smsc47m1_update_device(dev, 0);
-	return sprintf(buf, "%d\n", PWM_EN_FROM_REG(data->pwm[nr]));
-}
-
-static ssize_t get_alarms(struct device *dev, struct device_attribute *attr, char *buf)
-{
-	struct smsc47m1_data *data = smsc47m1_update_device(dev, 0);
-	return sprintf(buf, "%d\n", data->alarms);
-}
-
-static ssize_t set_fan_min(struct device *dev, const char *buf,
-		size_t count, int nr)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	struct smsc47m1_data *data = i2c_get_clientdata(client);
-	long rpmdiv, val = simple_strtol(buf, NULL, 10);
-
-	down(&data->update_lock);
-	rpmdiv = val * DIV_FROM_REG(data->fan_div[nr]);
-
-	if (983040 > 192 * rpmdiv || 2 * rpmdiv > 983040) {
-		up(&data->update_lock);
-		return -EINVAL;
-	}
-
-	data->fan_preload[nr] = 192 - ((983040 + rpmdiv / 2) / rpmdiv);
-	smsc47m1_write_value(client, SMSC47M1_REG_FAN_PRELOAD(nr),
-			     data->fan_preload[nr]);
-	up(&data->update_lock);
-
-	return count;
-}
-
-/* Note: we save and restore the fan minimum here, because its value is
-   determined in part by the fan clock divider.  This follows the principle
-   of least suprise; the user doesn't expect the fan minimum to change just
-   because the divider changed. */
-static ssize_t set_fan_div(struct device *dev, const char *buf,
-		size_t count, int nr)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	struct smsc47m1_data *data = i2c_get_clientdata(client);
-
-	long new_div = simple_strtol(buf, NULL, 10), tmp;
-	u8 old_div = DIV_FROM_REG(data->fan_div[nr]);
-
-	if (new_div == old_div) /* No change */
-		return count;
-
-	down(&data->update_lock);
-	switch (new_div) {
-	case 1: data->fan_div[nr] = 0; break;
-	case 2: data->fan_div[nr] = 1; break;
-	case 4: data->fan_div[nr] = 2; break;
-	case 8: data->fan_div[nr] = 3; break;
-	default:
-		up(&data->update_lock);
-		return -EINVAL;
-	}
-
-	tmp = smsc47m1_read_value(client, SMSC47M1_REG_FANDIV) & 0x0F;
-	tmp |= (data->fan_div[0] << 4) | (data->fan_div[1] << 6);
-	smsc47m1_write_value(client, SMSC47M1_REG_FANDIV, tmp);
-
-	/* Preserve fan min */
-	tmp = 192 - (old_div * (192 - data->fan_preload[nr])
-		     + new_div / 2) / new_div;
-	data->fan_preload[nr] = SENSORS_LIMIT(tmp, 0, 191);
-	smsc47m1_write_value(client, SMSC47M1_REG_FAN_PRELOAD(nr),
-			     data->fan_preload[nr]);
-	up(&data->update_lock);
-
-	return count;
-}
-
-static ssize_t set_pwm(struct device *dev, const char *buf,
-		size_t count, int nr)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	struct smsc47m1_data *data = i2c_get_clientdata(client);
-
-	long val = simple_strtol(buf, NULL, 10);
-
-	if (val < 0 || val > 255)
-		return -EINVAL;
-
-	down(&data->update_lock);
-	data->pwm[nr] &= 0x81; /* Preserve additional bits */
-	data->pwm[nr] |= PWM_TO_REG(val);
-	smsc47m1_write_value(client, SMSC47M1_REG_PWM(nr),
-			     data->pwm[nr]);
-	up(&data->update_lock);
-
-	return count;
-}
-
-static ssize_t set_pwm_en(struct device *dev, const char *buf,
-		size_t count, int nr)
-{
-	struct i2c_client *client = to_i2c_client(dev);
-	struct smsc47m1_data *data = i2c_get_clientdata(client);
-
-	long val = simple_strtol(buf, NULL, 10);
-	
-	if (val != 0 && val != 1)
-		return -EINVAL;
-
-	down(&data->update_lock);
-	data->pwm[nr] &= 0xFE; /* preserve the other bits */
-	data->pwm[nr] |= !val;
-	smsc47m1_write_value(client, SMSC47M1_REG_PWM(nr),
-			     data->pwm[nr]);
-	up(&data->update_lock);
-
-	return count;
-}
-
-#define fan_present(offset)						\
-static ssize_t get_fan##offset (struct device *dev, struct device_attribute *attr, char *buf)		\
-{									\
-	return get_fan(dev, buf, offset - 1);				\
-}									\
-static ssize_t get_fan##offset##_min (struct device *dev, struct device_attribute *attr, char *buf)	\
-{									\
-	return get_fan_min(dev, buf, offset - 1);			\
-}									\
-static ssize_t set_fan##offset##_min (struct device *dev, struct device_attribute *attr,		\
-		const char *buf, size_t count)				\
-{									\
-	return set_fan_min(dev, buf, count, offset - 1);		\
-}									\
-static ssize_t get_fan##offset##_div (struct device *dev, struct device_attribute *attr, char *buf)	\
-{									\
-	return get_fan_div(dev, buf, offset - 1);			\
-}									\
-static ssize_t set_fan##offset##_div (struct device *dev, struct device_attribute *attr,		\
-		const char *buf, size_t count)				\
-{									\
-	return set_fan_div(dev, buf, count, offset - 1);		\
-}									\
-static ssize_t get_pwm##offset (struct device *dev, struct device_attribute *attr, char *buf)		\
-{									\
-	return get_pwm(dev, buf, offset - 1);				\
-}									\
-static ssize_t set_pwm##offset (struct device *dev, struct device_attribute *attr,			\
-		const char *buf, size_t count)				\
-{									\
-	return set_pwm(dev, buf, count, offset - 1);			\
-}									\
-static ssize_t get_pwm##offset##_en (struct device *dev, struct device_attribute *attr, char *buf)	\
-{									\
-	return get_pwm_en(dev, buf, offset - 1);			\
-}									\
-static ssize_t set_pwm##offset##_en (struct device *dev, struct device_attribute *attr,		\
-		const char *buf, size_t count)				\
-{									\
-	return set_pwm_en(dev, buf, count, offset - 1);			\
-}									\
-static DEVICE_ATTR(fan##offset##_input, S_IRUGO, get_fan##offset,	\
-		NULL);							\
-static DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR,		\
-		get_fan##offset##_min, set_fan##offset##_min);		\
-static DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR,		\
-		get_fan##offset##_div, set_fan##offset##_div);		\
-static DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR,			\
-		get_pwm##offset, set_pwm##offset);			\
-static DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR,		\
-		get_pwm##offset##_en, set_pwm##offset##_en);
-
-fan_present(1);
-fan_present(2);
-
-static DEVICE_ATTR(alarms, S_IRUGO, get_alarms, NULL);
-
-static int smsc47m1_attach_adapter(struct i2c_adapter *adapter)
-{
-	if (!(adapter->class & I2C_CLASS_HWMON))
-		return 0;
-	return i2c_detect(adapter, &addr_data, smsc47m1_detect);
-}
-
-static int smsc47m1_find(int *address)
-{
-	u8 val;
-
-	superio_enter();
-	val = superio_inb(SUPERIO_REG_DEVID);
-
-	/*
-	 * SMSC LPC47M10x/LPC47M13x (device id 0x59), LPC47M14x (device id
-	 * 0x5F) and LPC47B27x (device id 0x51) have fan control.
-	 * The LPC47M15x and LPC47M192 chips "with hardware monitoring block"
-	 * can do much more besides (device id 0x60).
-	 */
-	if (val == 0x51)
-		printk(KERN_INFO "smsc47m1: Found SMSC LPC47B27x\n");
-	else if (val == 0x59)
-		printk(KERN_INFO "smsc47m1: Found SMSC LPC47M10x/LPC47M13x\n");
-	else if (val == 0x5F)
-		printk(KERN_INFO "smsc47m1: Found SMSC LPC47M14x\n");
-	else if (val == 0x60)
-		printk(KERN_INFO "smsc47m1: Found SMSC LPC47M15x/LPC47M192\n");
-	else {
-		superio_exit();
-		return -ENODEV;
-	}
-
-	superio_select();
-	*address = (superio_inb(SUPERIO_REG_BASE) << 8)
-		 |  superio_inb(SUPERIO_REG_BASE + 1);
-	val = superio_inb(SUPERIO_REG_ACT);
-	if (*address == 0 || (val & 0x01) == 0) {
-		printk(KERN_INFO "smsc47m1: Device is disabled, will not use\n");
-		superio_exit();
-		return -ENODEV;
-	}
-
-	superio_exit();
-	return 0;
-}
-
-static int smsc47m1_detect(struct i2c_adapter *adapter, int address, int kind)
-{
-	struct i2c_client *new_client;
-	struct smsc47m1_data *data;
-	int err = 0;
-	int fan1, fan2, pwm1, pwm2;
-
-	if (!i2c_is_isa_adapter(adapter)) {
-		return 0;
-	}
-
-	if (!request_region(address, SMSC_EXTENT, smsc47m1_driver.name)) {
-		dev_err(&adapter->dev, "Region 0x%x already in use!\n", address);
-		return -EBUSY;
-	}
-
-	if (!(data = kmalloc(sizeof(struct smsc47m1_data), GFP_KERNEL))) {
-		err = -ENOMEM;
-		goto error_release;
-	}
-	memset(data, 0x00, sizeof(struct smsc47m1_data));
-
-	new_client = &data->client;
-	i2c_set_clientdata(new_client, data);
-	new_client->addr = address;
-	init_MUTEX(&data->lock);
-	new_client->adapter = adapter;
-	new_client->driver = &smsc47m1_driver;
-	new_client->flags = 0;
-
-	strlcpy(new_client->name, "smsc47m1", I2C_NAME_SIZE);
-	init_MUTEX(&data->update_lock);
-
-	/* If no function is properly configured, there's no point in
-	   actually registering the chip. */
-	fan1 = (smsc47m1_read_value(new_client, SMSC47M1_REG_TPIN(0)) & 0x05)
-	       == 0x05;
-	fan2 = (smsc47m1_read_value(new_client, SMSC47M1_REG_TPIN(1)) & 0x05)
-	       == 0x05;
-	pwm1 = (smsc47m1_read_value(new_client, SMSC47M1_REG_PPIN(0)) & 0x05)
-	       == 0x04;
-	pwm2 = (smsc47m1_read_value(new_client, SMSC47M1_REG_PPIN(1)) & 0x05)
-	       == 0x04;
-	if (!(fan1 || fan2 || pwm1 || pwm2)) {
-		dev_warn(&new_client->dev, "Device is not configured, will not use\n");
-		err = -ENODEV;
-		goto error_free;
-	}
-
-	if ((err = i2c_attach_client(new_client)))
-		goto error_free;
-
-	/* Some values (fan min, clock dividers, pwm registers) may be
-	   needed before any update is triggered, so we better read them
-	   at least once here. We don't usually do it that way, but in
-	   this particular case, manually reading 5 registers out of 8
-	   doesn't make much sense and we're better using the existing
-	   function. */
-	smsc47m1_update_device(&new_client->dev, 1);
-
-	if (fan1) {
-		device_create_file(&new_client->dev, &dev_attr_fan1_input);
-		device_create_file(&new_client->dev, &dev_attr_fan1_min);
-		device_create_file(&new_client->dev, &dev_attr_fan1_div);
-	} else
-		dev_dbg(&new_client->dev, "Fan 1 not enabled by hardware, "
-			"skipping\n");
-
-	if (fan2) {
-		device_create_file(&new_client->dev, &dev_attr_fan2_input);
-		device_create_file(&new_client->dev, &dev_attr_fan2_min);
-		device_create_file(&new_client->dev, &dev_attr_fan2_div);
-	} else
-		dev_dbg(&new_client->dev, "Fan 2 not enabled by hardware, "
-			"skipping\n");
-
-	if (pwm1) {
-		device_create_file(&new_client->dev, &dev_attr_pwm1);
-		device_create_file(&new_client->dev, &dev_attr_pwm1_enable);
-	} else
-		dev_dbg(&new_client->dev, "PWM 1 not enabled by hardware, "
-			"skipping\n");
-	if (pwm2) {
-		device_create_file(&new_client->dev, &dev_attr_pwm2);
-		device_create_file(&new_client->dev, &dev_attr_pwm2_enable);
-	} else
-		dev_dbg(&new_client->dev, "PWM 2 not enabled by hardware, "
-			"skipping\n");
-
-	device_create_file(&new_client->dev, &dev_attr_alarms);
-
-	return 0;
-
-error_free:
-	kfree(new_client);
-error_release:
-	release_region(address, SMSC_EXTENT);
-	return err;
-}
-
-static int smsc47m1_detach_client(struct i2c_client *client)
-{
-	int err;
-
-	if ((err = i2c_detach_client(client))) {
-		dev_err(&client->dev, "Client deregistration failed, "
-			"client not detached.\n");
-		return err;
-	}
-
-	release_region(client->addr, SMSC_EXTENT);
-	kfree(i2c_get_clientdata(client));
-
-	return 0;
-}
-
-static int smsc47m1_read_value(struct i2c_client *client, u8 reg)
-{
-	int res;
-
-	down(&((struct smsc47m1_data *) i2c_get_clientdata(client))->lock);
-	res = inb_p(client->addr + reg);
-	up(&((struct smsc47m1_data *) i2c_get_clientdata(client))->lock);
-	return res;
-}
-
-static void smsc47m1_write_value(struct i2c_client *client, u8 reg, u8 value)
-{
-	down(&((struct smsc47m1_data *) i2c_get_clientdata(client))->lock);
-	outb_p(value, client->addr + reg);
-	up(&((struct smsc47m1_data *) i2c_get_clientdata(client))->lock);
-}
-
-static struct smsc47m1_data *smsc47m1_update_device(struct device *dev,
-		int init)
-{
- 	struct i2c_client *client = to_i2c_client(dev);
-	struct smsc47m1_data *data = i2c_get_clientdata(client);
-
-	down(&data->update_lock);
-
-	if (time_after(jiffies, data->last_updated + HZ + HZ / 2) || init) {
-		int i;
-
-		for (i = 0; i < 2; i++) {
-			data->fan[i] = smsc47m1_read_value(client,
-				       SMSC47M1_REG_FAN(i));
-			data->fan_preload[i] = smsc47m1_read_value(client,
-					       SMSC47M1_REG_FAN_PRELOAD(i));
-			data->pwm[i] = smsc47m1_read_value(client,
-				       SMSC47M1_REG_PWM(i));
-		}
-
-		i = smsc47m1_read_value(client, SMSC47M1_REG_FANDIV);
-		data->fan_div[0] = (i >> 4) & 0x03;
-		data->fan_div[1] = i >> 6;
-
-		data->alarms = smsc47m1_read_value(client,
-			       SMSC47M1_REG_ALARM) >> 6;
-		/* Clear alarms if needed */
-		if (data->alarms)
-			smsc47m1_write_value(client, SMSC47M1_REG_ALARM, 0xC0);
-
-		data->last_updated = jiffies;
-	}
-
-	up(&data->update_lock);
-	return data;
-}
-
-static int __init sm_smsc47m1_init(void)
-{
-	if (smsc47m1_find(normal_isa)) {
-		return -ENODEV;
-	}
-
-	return i2c_add_driver(&smsc47m1_driver);
-}
-
-static void __exit sm_smsc47m1_exit(void)
-{
-	i2c_del_driver(&smsc47m1_driver);
-}
-
-MODULE_AUTHOR("Mark D. Studebaker <mdsxyz123@yahoo.com>");
-MODULE_DESCRIPTION("SMSC LPC47M1xx fan sensors driver");
-MODULE_LICENSE("GPL");
-
-module_init(sm_smsc47m1_init);
-module_exit(sm_smsc47m1_exit);