Commit 8918023d authored by Jean Delvare's avatar Jean Delvare
Browse files

hwmon: (w83627hf) Drop the force_addr module parameter 



This module parameter is there to workaround broken BIOS. I'm not even
sure if it was used in the past 5 years, and it gets in the way of
converting the driver to the MFD infrastructure. So tell the users how
they can do the same from user-space.

Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
Cc: Rodolfo Giometti <giometti@linux.it>
parent 591ec650

Documentation/hwmon/w83627hf

+27 −2
Original line number Diff line number Diff line
@@ -32,8 +32,6 @@ Authors: 
Module Parameters

-----------------



* force_addr: int

  Initialize the ISA address of the sensors

* force_i2c: int

  Initialize the I2C address of the sensors

* init: int
@@ -70,3 +68,30 @@ doesn't help, you may just ignore the bogus VID reading with no harm done. 
For further information on this driver see the w83781d driver documentation.



[1] http://www.lm-sensors.org/browser/lm-sensors/trunk/doc/vid



Forcing the address

-------------------



The driver used to have a module parameter named force_addr, which could

be used to force the base I/O address of the hardware monitoring block.

This was meant as a workaround for mainboards with a broken BIOS. This

module parameter is gone for technical reasons. If you need this feature,

you can obtain the same result by using the isaset tool (part of

lm-sensors) before loading the driver:



# Enter the Super I/O config space

isaset -y -f 0x2e 0x87

isaset -y -f 0x2e 0x87



# Select the hwmon logical device

isaset -y 0x2e 0x2f 0x07 0x0b



# Set the base I/O address (to 0x290 in this example)

isaset -y 0x2e 0x2f 0x60 0x02

isaset -y 0x2e 0x2f 0x61 0x90



# Exit the Super-I/O config space

isaset -y -f 0x2e 0xaa



The above sequence assumes a Super-I/O config space at 0x2e/0x2f, but

0x4e/0x4f is also possible.

drivers/hwmon/w83627hf.c

+0 −11
Original line number Diff line number Diff line
@@ -59,10 +59,6 @@ static struct platform_device *pdev; 
#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,

		 "Initialize the base address of the sensors");

static u8 force_i2c = 0x1f;

module_param(force_i2c, byte, 0);

MODULE_PARM_DESC(force_i2c,
@@ -1169,13 +1165,6 @@ static int __init w83627hf_find(int sioaddr, unsigned short *addr, 
	}



	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;

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