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r: 162668
b: refs/heads/master
c: f39d56e
h: refs/heads/master
v: v3
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Michael Hennerich authored and Mike Frysinger committed Sep 17, 2009
1 parent 3cc7484 commit c8236ca
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2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 66bc4a6f34a950c7aede597c578352c3eba82017
refs/heads/master: f39d56ec469a9ade221ceeb85a37b051374f616b
28 changes: 13 additions & 15 deletions trunk/Documentation/hwmon/pcf8591
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Expand Up @@ -2,11 +2,11 @@ Kernel driver pcf8591
=====================

Supported chips:
* Philips/NXP PCF8591
* Philips PCF8591
Prefix: 'pcf8591'
Addresses scanned: I2C 0x48 - 0x4f
Datasheet: Publicly available at the NXP website
http://www.nxp.com/pip/PCF8591_6.html
Datasheet: Publicly available at the Philips Semiconductor website
http://www.semiconductors.philips.com/pip/PCF8591P.html

Authors:
Aurelien Jarno <aurelien@aurel32.net>
Expand All @@ -16,10 +16,9 @@ Authors:

Description
-----------

The PCF8591 is an 8-bit A/D and D/A converter (4 analog inputs and one
analog output) for the I2C bus produced by Philips Semiconductors (now NXP).
It is designed to provide a byte I2C interface to up to 4 separate devices.
analog output) for the I2C bus produced by Philips Semiconductors. It
is designed to provide a byte I2C interface to up to 4 separate devices.

The PCF8591 has 4 analog inputs programmable as single-ended or
differential inputs :
Expand Down Expand Up @@ -59,29 +58,28 @@ Accessing PCF8591 via /sys interface
-------------------------------------

! Be careful !
The PCF8591 is plainly impossible to detect! Stupid chip.
So every chip with address in the interval [0x48..0x4f] is
The PCF8591 is plainly impossible to detect ! Stupid chip.
So every chip with address in the interval [48..4f] is
detected as PCF8591. If you have other chips in this address
range, the workaround is to load this module after the one
for your others chips.

On detection (i.e. insmod, modprobe et al.), directories are being
created for each detected PCF8591:

/sys/bus/i2c/devices/<0>-<1>/
/sys/bus/devices/<0>-<1>/
where <0> is the bus the chip was detected on (e. g. i2c-0)
and <1> the chip address ([48..4f])

Inside these directories, there are such files:
in0_input, in1_input, in2_input, in3_input, out0_enable, out0_output, name
in0, in1, in2, in3, out0_enable, out0_output, name

Name contains chip name.

The in0_input, in1_input, in2_input and in3_input files are RO. Reading gives
the value of the corresponding channel. Depending on the current analog inputs
configuration, files in2_input and in3_input may not exist. Values range
from 0 to 255 for single ended inputs and -128 to +127 for differential inputs
(8-bit ADC).
The in0, in1, in2 and in3 files are RO. Reading gives the value of the
corresponding channel. Depending on the current analog inputs configuration,
files in2 and/or in3 do not exist. Values range are from 0 to 255 for single
ended inputs and -128 to +127 for differential inputs (8-bit ADC).

The out0_enable file is RW. Reading gives "1" for analog output enabled and
"0" for analog output disabled. Writing accepts "0" and "1" accordingly.
Expand Down
36 changes: 0 additions & 36 deletions trunk/Documentation/hwmon/tmp421

This file was deleted.

6 changes: 0 additions & 6 deletions trunk/MAINTAINERS
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Expand Up @@ -931,12 +931,6 @@ W: http://wireless.kernel.org/en/users/Drivers/ar9170
S: Maintained
F: drivers/net/wireless/ath/ar9170/

ATK0110 HWMON DRIVER
M: Luca Tettamanti <kronos.it@gmail.com>
L: lm-sensors@lm-sensors.org
S: Maintained
F: drivers/hwmon/asus_atk0110.c

ATI_REMOTE2 DRIVER
M: Ville Syrjala <syrjala@sci.fi>
S: Maintained
Expand Down
2 changes: 1 addition & 1 deletion trunk/arch/blackfin/mach-bf537/boards/stamp.c
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Expand Up @@ -1089,7 +1089,7 @@ static struct platform_device i2c_bfin_twi_device = {

#if defined(CONFIG_KEYBOARD_ADP5588) || defined(CONFIG_KEYBOARD_ADP5588_MODULE)
#include <linux/input.h>
#include <linux/i2c/adp5588_keys.h>
#include <linux/i2c/adp5588.h>
static const unsigned short adp5588_keymap[ADP5588_KEYMAPSIZE] = {
[0] = KEY_GRAVE,
[1] = KEY_1,
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1 change: 1 addition & 0 deletions trunk/arch/ia64/kernel/head.S
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Expand Up @@ -34,6 +34,7 @@
#include <asm/mca_asm.h>
#include <linux/init.h>
#include <linux/linkage.h>
#include "head.h"

#ifdef CONFIG_HOTPLUG_CPU
#define SAL_PSR_BITS_TO_SET \
Expand Down
1 change: 1 addition & 0 deletions trunk/arch/ia64/kernel/head.h
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@@ -0,0 +1 @@
extern void console_print(const char *s);
173 changes: 4 additions & 169 deletions trunk/arch/m68k/include/asm/checksum.h
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@@ -1,170 +1,5 @@
#ifndef _M68K_CHECKSUM_H
#define _M68K_CHECKSUM_H

#include <linux/in6.h>

/*
* computes the checksum of a memory block at buff, length len,
* and adds in "sum" (32-bit)
*
* returns a 32-bit number suitable for feeding into itself
* or csum_tcpudp_magic
*
* this function must be called with even lengths, except
* for the last fragment, which may be odd
*
* it's best to have buff aligned on a 32-bit boundary
*/
__wsum csum_partial(const void *buff, int len, __wsum sum);

/*
* the same as csum_partial, but copies from src while it
* checksums
*
* here even more important to align src and dst on a 32-bit (or even
* better 64-bit) boundary
*/

extern __wsum csum_partial_copy_from_user(const void __user *src,
void *dst,
int len, __wsum sum,
int *csum_err);

extern __wsum csum_partial_copy_nocheck(const void *src,
void *dst, int len,
__wsum sum);


#ifdef CONFIG_COLDFIRE

/*
* The ColdFire cores don't support all the 68k instructions used
* in the optimized checksum code below. So it reverts back to using
* more standard C coded checksums. The fast checksum code is
* significantly larger than the optimized version, so it is not
* inlined here.
*/
__sum16 ip_fast_csum(const void *iph, unsigned int ihl);

static inline __sum16 csum_fold(__wsum sum)
{
unsigned int tmp = (__force u32)sum;

tmp = (tmp & 0xffff) + (tmp >> 16);
tmp = (tmp & 0xffff) + (tmp >> 16);

return (__force __sum16)~tmp;
}

#ifdef __uClinux__
#include "checksum_no.h"
#else

/*
* This is a version of ip_fast_csum() optimized for IP headers,
* which always checksum on 4 octet boundaries.
*/
static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
{
unsigned int sum = 0;
unsigned long tmp;

__asm__ ("subqw #1,%2\n"
"1:\t"
"movel %1@+,%3\n\t"
"addxl %3,%0\n\t"
"dbra %2,1b\n\t"
"movel %0,%3\n\t"
"swap %3\n\t"
"addxw %3,%0\n\t"
"clrw %3\n\t"
"addxw %3,%0\n\t"
: "=d" (sum), "=&a" (iph), "=&d" (ihl), "=&d" (tmp)
: "0" (sum), "1" (iph), "2" (ihl)
: "memory");
return (__force __sum16)~sum;
}

static inline __sum16 csum_fold(__wsum sum)
{
unsigned int tmp = (__force u32)sum;

__asm__("swap %1\n\t"
"addw %1, %0\n\t"
"clrw %1\n\t"
"addxw %1, %0"
: "=&d" (sum), "=&d" (tmp)
: "0" (sum), "1" (tmp));

return (__force __sum16)~sum;
}

#endif /* CONFIG_COLDFIRE */

static inline __wsum
csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
unsigned short proto, __wsum sum)
{
__asm__ ("addl %2,%0\n\t"
"addxl %3,%0\n\t"
"addxl %4,%0\n\t"
"clrl %1\n\t"
"addxl %1,%0"
: "=&d" (sum), "=d" (saddr)
: "g" (daddr), "1" (saddr), "d" (len + proto),
"0" (sum));
return sum;
}


/*
* computes the checksum of the TCP/UDP pseudo-header
* returns a 16-bit checksum, already complemented
*/
static inline __sum16
csum_tcpudp_magic(__be32 saddr, __be32 daddr, unsigned short len,
unsigned short proto, __wsum sum)
{
return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
}

/*
* this routine is used for miscellaneous IP-like checksums, mainly
* in icmp.c
*/

static inline __sum16 ip_compute_csum(const void *buff, int len)
{
return csum_fold (csum_partial(buff, len, 0));
}

#define _HAVE_ARCH_IPV6_CSUM
static __inline__ __sum16
csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr,
__u32 len, unsigned short proto, __wsum sum)
{
register unsigned long tmp;
__asm__("addl %2@,%0\n\t"
"movel %2@(4),%1\n\t"
"addxl %1,%0\n\t"
"movel %2@(8),%1\n\t"
"addxl %1,%0\n\t"
"movel %2@(12),%1\n\t"
"addxl %1,%0\n\t"
"movel %3@,%1\n\t"
"addxl %1,%0\n\t"
"movel %3@(4),%1\n\t"
"addxl %1,%0\n\t"
"movel %3@(8),%1\n\t"
"addxl %1,%0\n\t"
"movel %3@(12),%1\n\t"
"addxl %1,%0\n\t"
"addxl %4,%0\n\t"
"clrl %1\n\t"
"addxl %1,%0"
: "=&d" (sum), "=&d" (tmp)
: "a" (saddr), "a" (daddr), "d" (len + proto),
"0" (sum));

return csum_fold(sum);
}

#endif /* _M68K_CHECKSUM_H */
#include "checksum_mm.h"
#endif
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