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authorCharles Spirakis <bezaur@gmail.com>2006-09-24 14:53:04 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2006-09-28 18:31:16 -0400
commit125751cb833f20c12c7237782b2a4680fd636ed0 (patch)
tree1f815c587d404c32f4127ac6454804d1a68f3cad /Documentation/hwmon
parent2d45771e6ea79f56a7d85e448f702f60ef86c228 (diff)
w83791d: Documentation update
w83791d: Documentation update The alarm bits and the beep enable bits are in different positions in the hardware. Document the problem and leave it to the user-space code to handle the situation. When this driver is updated to the standardized sysfs alarm/beep methodology, this won't be a problem. This is a documentation only change. Signed-off by: Charles Spirakis <bezaur@gmail.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/hwmon')
-rw-r--r--Documentation/hwmon/w83791d69
1 files changed, 38 insertions, 31 deletions
diff --git a/Documentation/hwmon/w83791d b/Documentation/hwmon/w83791d
index 83a3836289c2..19b2ed739fa1 100644
--- a/Documentation/hwmon/w83791d
+++ b/Documentation/hwmon/w83791d
@@ -5,7 +5,7 @@ Supported chips:
5 * Winbond W83791D 5 * Winbond W83791D
6 Prefix: 'w83791d' 6 Prefix: 'w83791d'
7 Addresses scanned: I2C 0x2c - 0x2f 7 Addresses scanned: I2C 0x2c - 0x2f
8 Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83791Da.pdf 8 Datasheet: http://www.winbond-usa.com/products/winbond_products/pdfs/PCIC/W83791D_W83791Gb.pdf
9 9
10Author: Charles Spirakis <bezaur@gmail.com> 10Author: Charles Spirakis <bezaur@gmail.com>
11 11
@@ -20,6 +20,9 @@ Credits:
20 Chunhao Huang <DZShen@Winbond.com.tw>, 20 Chunhao Huang <DZShen@Winbond.com.tw>,
21 Rudolf Marek <r.marek@sh.cvut.cz> 21 Rudolf Marek <r.marek@sh.cvut.cz>
22 22
23Additional contributors:
24 Sven Anders <anders@anduras.de>
25
23Module Parameters 26Module Parameters
24----------------- 27-----------------
25 28
@@ -46,7 +49,8 @@ Module Parameters
46Description 49Description
47----------- 50-----------
48 51
49This driver implements support for the Winbond W83791D chip. 52This driver implements support for the Winbond W83791D chip. The W83791G
53chip appears to be the same as the W83791D but is lead free.
50 54
51Detection of the chip can sometimes be foiled because it can be in an 55Detection of the chip can sometimes be foiled because it can be in an
52internal state that allows no clean access (Bank with ID register is not 56internal state that allows no clean access (Bank with ID register is not
@@ -71,34 +75,36 @@ Voltage sensors (also known as IN sensors) report their values in millivolts.
71An alarm is triggered if the voltage has crossed a programmable minimum 75An alarm is triggered if the voltage has crossed a programmable minimum
72or maximum limit. 76or maximum limit.
73 77
74Alarms are provided as output from a "realtime status register". The 78The bit ordering for the alarm "realtime status register" and the
75following bits are defined: 79"beep enable registers" are different.
76 80
77bit - alarm on: 81in0 (VCORE) : alarms: 0x000001 beep_enable: 0x000001
780 - Vcore 82in1 (VINR0) : alarms: 0x000002 beep_enable: 0x002000 <== mismatch
791 - VINR0 83in2 (+3.3VIN): alarms: 0x000004 beep_enable: 0x000004
802 - +3.3VIN 84in3 (5VDD) : alarms: 0x000008 beep_enable: 0x000008
813 - 5VDD 85in4 (+12VIN) : alarms: 0x000100 beep_enable: 0x000100
824 - temp1 86in5 (-12VIN) : alarms: 0x000200 beep_enable: 0x000200
835 - temp2 87in6 (-5VIN) : alarms: 0x000400 beep_enable: 0x000400
846 - fan1 88in7 (VSB) : alarms: 0x080000 beep_enable: 0x010000 <== mismatch
857 - fan2 89in8 (VBAT) : alarms: 0x100000 beep_enable: 0x020000 <== mismatch
868 - +12VIN 90in9 (VINR1) : alarms: 0x004000 beep_enable: 0x004000
879 - -12VIN 91temp1 : alarms: 0x000010 beep_enable: 0x000010
8810 - -5VIN 92temp2 : alarms: 0x000020 beep_enable: 0x000020
8911 - fan3 93temp3 : alarms: 0x002000 beep_enable: 0x000002 <== mismatch
9012 - chassis 94fan1 : alarms: 0x000040 beep_enable: 0x000040
9113 - temp3 95fan2 : alarms: 0x000080 beep_enable: 0x000080
9214 - VINR1 96fan3 : alarms: 0x000800 beep_enable: 0x000800
9315 - reserved 97fan4 : alarms: 0x200000 beep_enable: 0x200000
9416 - tart1 98fan5 : alarms: 0x400000 beep_enable: 0x400000
9517 - tart2 99tart1 : alarms: 0x010000 beep_enable: 0x040000 <== mismatch
9618 - tart3 100tart2 : alarms: 0x020000 beep_enable: 0x080000 <== mismatch
9719 - VSB 101tart3 : alarms: 0x040000 beep_enable: 0x100000 <== mismatch
9820 - VBAT 102case_open : alarms: 0x001000 beep_enable: 0x001000
9921 - fan4 103user_enable : alarms: -------- beep_enable: 0x800000
10022 - fan5 104
10123 - reserved 105*** NOTE: It is the responsibility of user-space code to handle the fact
106that the beep enable and alarm bits are in different positions when using that
107feature of the chip.
102 108
103When an alarm goes off, you can be warned by a beeping signal through your 109When an alarm goes off, you can be warned by a beeping signal through your
104computer speaker. It is possible to enable all beeping globally, or only 110computer speaker. It is possible to enable all beeping globally, or only
@@ -109,5 +115,6 @@ often will do no harm, but will return 'old' values.
109 115
110W83791D TODO: 116W83791D TODO:
111--------------- 117---------------
112Provide a patch for per-file alarms as discussed on the mailing list 118Provide a patch for per-file alarms and beep enables as defined in the hwmon
119 documentation (Documentation/hwmon/sysfs-interface)
113Provide a patch for smart-fan control (still need appropriate motherboard/fans) 120Provide a patch for smart-fan control (still need appropriate motherboard/fans)