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vt8231

Revision 3194, 10.2 KB (checked in by khali, 6 years ago)
vt8231 cleanups, to get the 2.4 driver, libsensors and sensors in line with the new 2.6 driver. The most important changes are temp inputs renumbering, and conversion formulas changes, because part of the conversions are now done by the driver as required by the interface standard.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`

Line
1	Kernel driver `vt8231.o'
2	========================
3
4	Status: Beta
5
6	Supported chips:
7	* VIA VT8231 South Bridge
8	Prefix: 'vt8231'
9	Addresses scanned: none, address read from PCI space
10
11	Author: Mark D. Studebaker <mdsxyz123@yahoo.com>
12
13	License: GPL
14
15
16	Module Parameters
17	-----------------
18
19	* force_addr: int
20	Initialize the base address of the sensors
21	* force: short array (min = 1, max = 48)
22	List of adapter,address pairs to boldly assume to be present
23	* force_vt8231: short array (min = 1, max = 48)
24	List of adapter,address pairs which are unquestionably assumed to contain
25	a `vt8231' chip
26	* probe: short array (min = 1, max = 48)
27	List of adapter,address pairs to scan additionally
28	* probe_range: short array (min = 1, max = 48)
29	List of adapter,start-addr,end-addr triples to scan additionally
30	* ignore: short array (min = 1, max = 48)
31	List of adapter,address pairs not to scan
32	* ignore_range: short array (min = 1, max = 48)
33	List of adapter,start-addr,end-addr triples not to scan
34
35
36	Description
37	-----------
38
39	The VIA VT8231 South Bridge contains voltage/temperature monitoring and
40	PWM control circuitry for two fans.
41
42	We define the sensors as follows.
43
44	Sensor Voltage Mode Temp Mode uch_config bit
45	------ ------------ --------- --------------
46	Reading 1 temp1
47	UCH1 in0 temp2 0x04 (4)
48	UCH2 in1 temp3 0x08 (8)
49	UCH3 in2 temp4 0x10 (16)
50	UCH4 in3 temp5 0x20 (32)
51	UCH5 in4 temp6 0x40 (64)
52	3.3V in5
53
54	As noted above, 5 of the sensors are "universal channels" and can
55	be set for either voltage or temperature.
56	Set the uch_config bit (in /proc) to 0 for voltage and 1 for temperature.
57	Voltages will read 0 if set for temperature.
58	Temperatures will read a really low number if set for voltage.
59
60	Fan rotation speeds are reported in RPM (rotations per minute). An alarm is
61	triggered if the rotation speed has dropped below a programmable limit. Fan
62	readings can be divided by a programmable divider (1, 2, 4 or 8) to give
63	the readings more range or accuracy. Not all RPM values can accurately be
64	represented, so some rounding is done. With a divider of 2, the lowest
65	representable value is around 2600 RPM.
66
67	PWM values are from 0 to 255. The first value in the /proc entry is
68	the pwm value; the second is the enable (0 or 1).
69
70	If an alarm triggers, it will remain triggered until the hardware register
71	is read at least once. This means that the cause for the alarm may
72	already have disappeared! Note that in the current implementation, all
73	hardware registers are read whenever any data is read (unless it is less
74	than 1.5 seconds since the last update). This means that you can easily
75	miss once-only alarms.
76
77
78	Chip Features
79	-------------
80
81	Chip 'vt8231'
82
83	LABEL LABEL CLASS COMPUTE CLASS MODE MAGN
84	in0 - - R- 2
85	in1 - - R- 2
86	in2 - - R- 2
87	in3 - - R- 2
88	in4 - - R- 2
89	in5 - - R- 2
90	in0_min in0 in0 RW 2
91	in1_min in1 in1 RW 2
92	in2_min in2 in2 RW 2
93	in3_min in3 in3 RW 2
94	in4_min in4 in4 RW 2
95	in5_min in5 in5 RW 2
96	in0_max in0 in0 RW 2
97	in1_max in1 in1 RW 2
98	in2_max in2 in2 RW 2
99	in3_max in3 in3 RW 2
100	in4_max in4 in4 RW 2
101	in5_max in5 in5 RW 2
102	fan1 - - R- 0
103	fan2 - - R- 0
104	fan1_min fan1 fan1 RW 0
105	fan2_min fan2 fan2 RW 0
106	temp1 - - R- 1
107	temp1_hyst temp1 temp1 RW 1
108	temp1_over temp1 temp1 RW 1
109	temp2 - - R- 2
110	temp2_hyst temp2 temp2 RW 2
111	temp2_over temp2 temp2 RW 2
112	temp3 - - R- 2
113	temp3_hyst temp3 temp3 RW 2
114	temp3_over temp3 temp3 RW 2
115	temp4 - - R- 2
116	temp4_hyst temp4 temp4 RW 2
117	temp4_over temp4 temp4 RW 2
118	temp5 - - R- 2
119	temp5_hyst temp5 temp5 RW 2
120	temp5_over temp5 temp5 RW 2
121	temp6 - - R- 2
122	temp6_hyst temp6 temp6 RW 2
123	temp6_over temp6 temp6 RW 2
124	fan1_div fan1 - RW 0
125	fan2_div fan2 - RW 0
126	alarms - - R- 0
127	vid - - R- 3
128	vrm - - RW 1
129	config - - R- 0
130
131	LABEL FEATURE SYMBOL SYSCTL FILE:N
132	in0 SENSORS_VT8231_IN0 in0:3
133	in1 SENSORS_VT8231_IN1 in1:3
134	in2 SENSORS_VT8231_IN2 in2:3
135	in3 SENSORS_VT8231_IN3 in3:3
136	in4 SENSORS_VT8231_IN4 in4:3
137	in5 SENSORS_VT8231_IN5 in5:3
138	in0_min SENSORS_VT8231_IN0_MIN in0:1
139	in1_min SENSORS_VT8231_IN1_MIN in1:1
140	in2_min SENSORS_VT8231_IN2_MIN in2:1
141	in3_min SENSORS_VT8231_IN3_MIN in3:1
142	in4_min SENSORS_VT8231_IN4_MIN in4:1
143	in5_min SENSORS_VT8231_IN5_MIN in5:1
144	in0_max SENSORS_VT8231_IN0_MAX in0:2
145	in1_max SENSORS_VT8231_IN1_MAX in1:2
146	in2_max SENSORS_VT8231_IN2_MAX in2:2
147	in3_max SENSORS_VT8231_IN3_MAX in3:2
148	in4_max SENSORS_VT8231_IN4_MAX in4:2
149	in5_max SENSORS_VT8231_IN5_MAX in5:2
150	fan1 SENSORS_VT8231_FAN1 fan1:2
151	fan2 SENSORS_VT8231_FAN2 fan2:2
152	fan1_min SENSORS_VT8231_FAN1_MIN fan1:1
153	fan2_min SENSORS_VT8231_FAN2_MIN fan2:1
154	temp1 SENSORS_VT8231_TEMP temp1:3
155	temp1_hyst SENSORS_VT8231_TEMP_HYST temp1:2
156	temp1_over SENSORS_VT8231_TEMP_OVER temp1:1
157	temp2 SENSORS_VT8231_TEMP2 temp2:3
158	temp2_hyst SENSORS_VT8231_TEMP2_HYST temp2:2
159	temp2_over SENSORS_VT8231_TEMP2_OVER temp2:1
160	temp3 SENSORS_VT8231_TEMP3 temp3:3
161	temp3_hyst SENSORS_VT8231_TEMP3_HYST temp3:2
162	temp3_over SENSORS_VT8231_TEMP3_OVER temp3:1
163	temp4 SENSORS_VT8231_TEMP4 temp4:3
164	temp4_hyst SENSORS_VT8231_TEMP4_HYST temp4:2
165	temp4_over SENSORS_VT8231_TEMP4_OVER temp4:1
166	temp5 SENSORS_VT8231_TEMP5 temp5:3
167	temp5_hyst SENSORS_VT8231_TEMP5_HYST temp5:2
168	temp5_over SENSORS_VT8231_TEMP5_OVER temp5:1
169	temp6 SENSORS_VT8231_TEMP6 temp6:3
170	temp6_hyst SENSORS_VT8231_TEMP6_HYST temp6:2
171	temp6_over SENSORS_VT8231_TEMP6_OVER temp6:1
172	fan1_div SENSORS_VT8231_FAN1_DIV fan_div:1
173	fan2_div SENSORS_VT8231_FAN2_DIV fan_div:2
174	alarms SENSORS_VT8231_ALARMS alarms:1
175	vid SENSORS_VT8231_VID vid:1
176	vrm SENSORS_VT8231_VRM vrm:1
177	config SENSORS_VT8231_UCH uch_config:1
178
179
180	Notes
181	-----
182
183	The lm_sensors project gratefully acknowledges the support of VIA in the
184	development of this driver.

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