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gl520sm

Revision 3007, 7.8 KB (checked in by khali, 7 years ago)
Backport the cleanups and corrections Rudolf Marek and I did when porting the chips documentation to Linux 2.6.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`

Line
1	Kernel driver `gl520sm.o'
2	=========================
3
4	Status: Complete but experimental
5
6	Supported chips:
7	* Genesys Logic GL520SM release 0x00
8	Prefix: 'gl520sm'
9	Addresses scanned: I2C 0x2c and 0x2d
10	Datasheet: Not openly available
11
12	Author: Frodo Looijaard <frodol@dds.nl>,
13	Kyösti Mälkki <kmalkki@cc.hut.fi>
14
15
16	Module Parameters
17	-----------------
18
19	* force: short array (min = 1, max = 48)
20	List of adapter,address pairs to boldly assume to be present
21	* ignore: short array (min = 1, max = 48)
22	List of adapter,address pairs not to scan
23	* ignore_range: short array (min = 1, max = 48)
24	List of adapter,start-addr,end-addr triples not to scan
25	* probe: short array (min = 1, max = 48)
26	List of adapter,address pairs to scan additionally
27	* probe_range: short array (min = 1, max = 48)
28	List of adapter,start-addr,end-addr triples to scan additionally
29
30	Description
31	-----------
32
33	This driver supports the Genesys Logic GL520SM chip.
34
35	The GL520SM implements one temperature sensor, two fan rotation speed
36	sensors, four voltage sensors and the cpu VID lines. In addition, one input
37	can be configured as either a temperature or voltage sensor.
38	The sensor can report alarms through the computer speakers.
39
40	Temperatures are measured in degrees Celsius. An alarm goes off while the
41	temperature is above the over temperature limit, and has not yet dropped
42	below the hysteresis limit. The alarm always reflects the current situation.
43	Measurements are guaranteed between 0 degrees and +110 degrees, with
44	a resolution of +-3 degrees.
45
46	Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
47	triggered if the rotation speed has dropped below a programmable limit.
48	In case when you have selected to turn Fan1 off, no Fan1 alarm is triggered
49	if measured temperature is below 'over temperature' limit.
50
51	Fan readings can be divided by a programmable divider (1, 2, 4 or 8) to give
52	the readings more range or accuracy. Not all RPM values can accurately be
53	represented, so some rounding is done. With a divider of 2, the lowest
54	representable value is around 1900 RPM.
55
56	Voltage sensors (also known as VIN sensors) report their values in volts. An
57	alarm is triggered if the voltage has crossed a programmable minimum or
58	maximum limit. Note that minimum in this case always means 'closest to
59	zero'; this is important for negative voltage measurements. The VDD input
60	measures voltages between 0.000 and 5.865 volt, with a resolution of 0.023
61	volt. The other inputs measure voltages between 0.000 and 4.845 volt, with a
62	resolution of 0.019 volt.
63
64	When an alarm goes off, you can be warned by a beeping signal through
65	your computer speaker. It is possible to enable all beeping globally,
66	or only the beeping for some alarms.
67
68	If an alarm triggers, it will remain triggered until the hardware register
69	is read at least once (except for temperature alarms). This means that the
70	cause for the alarm may already have disappeared! Note that in the current
71	implementation, all hardware registers are read whenever any data is read
72	(unless it is less than 1.5 seconds since the last update). This means that
73	you can easily miss once-only alarms.
74
75	The GL520SM only updates its values each 1.5 seconds; reading it more often
76	will do no harm, but will return 'old' values.
77
78	Chip Features
79	-------------
80
81	Chip `gl520sm'
82	LABEL LABEL CLASS COMPUTE CLASS ACCESS MAGNITUDE
83	vdd NONE NONE R 2
84	vin1 NONE NONE R 2
85	vin2 NONE NONE R 2
86	vin3 NONE NONE R 2
87	vin4 NONE NONE R 2
88	vdd_min vdd vdd RW 2
89	vin1_min vin1 vin1 RW 2
90	vin2_min vin2 vin2 RW 2
91	vin3_min vin3 vin3 RW 2
92	vin4_min vin4 vin4 RW 2
93	vdd_max vdd vdd RW 2
94	vin1_max vin1 vin1 RW 2
95	vin2_max vin2 vin2 RW 2
96	vin3_max vin3 vin3 RW 2
97	vin4_max vin4 vin4 RW 2
98	fan1 NONE NONE R 0
99	fan2 NONE NONE R 0
100	fan1_min fan1 fan1 RW 0
101	fan2_min fan2 fan2 RW 0
102	temp1 NONE NONE R 1
103	temp2 NONE NONE R 1
104	temp1_hyst temp1 temp1 RW 1
105	temp2_hyst temp2 temp2 RW 1
106	temp1_over temp1 temp1 RW 1
107	temp2_over temp2 temp2 RW 1
108	fan1_div fan1 NONE RW 0
109	fan2_div fan2 NONE RW 0
110	alarms NONE NONE R 0
111	beep_enable alarms NONE RW 0
112	beeps alarms alarms RW 0
113	two_temps NONE NONE RW 0
114
115	LABEL FEATURE SYMBOL SYSCTL FILE:NR
116	vdd SENSORS_GL520_VDD vdd:3
117	vin1 SENSORS_GL520_VIN1 vin1:3
118	vin2 SENSORS_GL520_VIN2 vin2:3
119	vin3 SENSORS_GL520_VIN3 vin3:3
120	vin4 SENSORS_GL520_VIN4 vin3:3
121	vdd_min SENSORS_GL520_VDD_MIN vdd:1
122	vin1_min SENSORS_GL520_VIN1_MIN vin1:1
123	vin2_min SENSORS_GL520_VIN2_MIN vin2:1
124	vin3_min SENSORS_GL520_VIN3_MIN vin3:1
125	vin4_min SENSORS_GL520_VIN4_MIN vin3:1
126	vdd_max SENSORS_GL520_VDD_MAX vdd:2
127	vin1_max SENSORS_GL520_VIN1_MAX vin1:2
128	vin2_max SENSORS_GL520_VIN2_MAX vin2:2
129	vin3_max SENSORS_GL520_VIN3_MAX vin3:2
130	vin4_max SENSORS_GL520_VIN4_MAX vin3:2
131	fan1 SENSORS_GL520_FAN1 fan1:2
132	fan2 SENSORS_GL520_FAN2 fan2:2
133	fan1_min SENSORS_GL520_FAN1_MIN fan1:1
134	fan2_min SENSORS_GL520_FAN2_MIN fan2:1
135	temp1 SENSORS_GL520_TEMP1 temp1:3
136	temp2 SENSORS_GL520_TEMP2 temp2:3
137	temp1_hyst SENSORS_GL520_TEMP1_HYST temp1:2
138	temp2_hyst SENSORS_GL520_TEMP2_HYST temp2:2
139	temp1_over SENSORS_GL520_TEMP1_OVER temp1:1
140	temp2_over SENSORS_GL520_TEMP2_OVER temp2:1
141	fan1_div SENSORS_GL520_FAN1_DIV fan_div:1
142	fan2_div SENSORS_GL520_FAN2_DIV fan_div:2
143	alarms SENSORS_GL520_ALARMS alarms:1
144	beep_enable SENSORS_GL520_BEEP_ENABLE beep:1
145	beeps SENSORS_GL520_BEEPS beep:2
146	two_temps SENSORS_GL520_TWOTEMPS config:1

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