1 files changed, 102 insertions, 0 deletions
diff --git a/Documentation/hwmon/amc6821 b/Documentation/hwmon/amc6821
new file mode 100644
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+Kernel driver amc6821
+=====================
+Supported chips:
+        Texas Instruments AMC6821
+        Prefix: 'amc6821'
+        Addresses scanned: 0x18, 0x19, 0x1a, 0x2c, 0x2d, 0x2e, 0x4c, 0x4d, 0x4e
+        Datasheet: http://focus.ti.com/docs/prod/folders/print/amc6821.html
+Authors:
+        Tomaz Mertelj <tomaz.mertelj@guest.arnes.si>
+Description
+-----------
+This driver implements support for the Texas Instruments amc6821 chip.
+The chip has one on-chip and one remote temperature sensor and one pwm fan
+regulator.
+The pwm can be controlled either from software or automatically.
+The driver provides the following sensor accesses in sysfs:
+temp1_input             ro      on-chip temperature
+temp1_min               rw      "
+temp1_max               rw      "
+temp1_crit              rw      "
+temp1_min_alarm         ro      "
+temp1_max_alarm         ro      "
+temp1_crit_alarm        ro      "
+temp2_input             ro      remote temperature
+temp2_min               rw      "
+temp2_max               rw      "
+temp2_crit              rw      "
+temp2_min_alarm         ro      "
+temp2_max_alarm         ro      "
+temp2_crit_alarm        ro      "
+temp2_fault             ro      "
+fan1_input              ro      tachometer speed
+fan1_min                rw      "
+fan1_max                rw      "
+fan1_fault              ro      "
+fan1_div                rw      Fan divisor can be either 2 or 4.
+pwm1                    rw      pwm1
+pwm1_enable             rw      regulator mode, 1=open loop, 2=fan controlled
+                                by remote temperature, 3=fan controlled by
+                                combination of the on-chip temperature and
+                                remote-sensor temperature,
+pwm1_auto_channels_temp ro      1 if pwm_enable==2, 3 if pwm_enable==3
+pwm1_auto_point1_pwm    ro      Hardwired to 0, shared for both
+                                temperature channels.
+pwm1_auto_point2_pwm    rw      This value is shared for both temperature
+                                channels.
+pwm1_auto_point3_pwm    rw      Hardwired to 255, shared for both
+                                temperature channels.
+temp1_auto_point1_temp  ro      Hardwired to temp2_auto_point1_temp
+                                which is rw. Below this temperature fan stops.
+temp1_auto_point2_temp  rw      The low-temperature limit of the proportional
+                                range. Below this temperature
+                                pwm1 = pwm1_auto_point2_pwm. It can go from
+                                0 degree C to 124 degree C in steps of
+                                4 degree C. Read it out after writing to get
+                                the actual value.
+temp1_auto_point3_temp  rw      Above this temperature fan runs at maximum
+                                speed. It can go from temp1_auto_point2_temp.
+                                It can only have certain discrete values
+                                which depend on temp1_auto_point2_temp and
+                                pwm1_auto_point2_pwm. Read it out after
+                                writing to get the actual value.
+temp2_auto_point1_temp  rw      Must be between 0 degree C and 63 degree C and
+                                it defines the passive cooling temperature.
+                                Below this temperature the fan stops in
+                                the closed loop mode.
+temp2_auto_point2_temp  rw      The low-temperature limit of the proportional
+                                range. Below this temperature
+                                pwm1 = pwm1_auto_point2_pwm. It can go from
+                                0 degree C to 124 degree C in steps
+                                of 4 degree C.
+temp2_auto_point3_temp  rw      Above this temperature fan runs at maximum
+                                speed. It can only have certain discrete
+                                values which depend on temp2_auto_point2_temp
+                                and pwm1_auto_point2_pwm. Read it out after
+                                writing to get actual value.
+Module parameters
+-----------------
+If your board has a BIOS that initializes the amc6821 correctly, you should
+load the module with: init=0.
+If your board BIOS doesn't initialize the chip, or you want
+different settings, you can set the following parameters:
+init=1,
+pwminv: 0 default pwm output, 1 inverts pwm output.

diff --git a/Documentation/hwmon/amc6821 b/Documentation/hwmon/amc6821 new file mode 100644 index 000000000000..ced8359c50f8 --- /dev/null +++ b/Documentation/hwmon/amc6821
@@ -0,0 +1,102 @@
	1	Kernel driver amc6821
	2	=====================
	3
	4	Supported chips:
	5	Texas Instruments AMC6821
	6	Prefix: 'amc6821'
	7	Addresses scanned: 0x18, 0x19, 0x1a, 0x2c, 0x2d, 0x2e, 0x4c, 0x4d, 0x4e
	8	Datasheet: http://focus.ti.com/docs/prod/folders/print/amc6821.html
	9
	10	Authors:
	11	Tomaz Mertelj <tomaz.mertelj@guest.arnes.si>
	12
	13
	14	Description
	15	-----------
	16
	17	This driver implements support for the Texas Instruments amc6821 chip.
	18	The chip has one on-chip and one remote temperature sensor and one pwm fan
	19	regulator.
	20	The pwm can be controlled either from software or automatically.
	21
	22	The driver provides the following sensor accesses in sysfs:
	23
	24	temp1_input ro on-chip temperature
	25	temp1_min rw "
	26	temp1_max rw "
	27	temp1_crit rw "
	28	temp1_min_alarm ro "
	29	temp1_max_alarm ro "
	30	temp1_crit_alarm ro "
	31
	32	temp2_input ro remote temperature
	33	temp2_min rw "
	34	temp2_max rw "
	35	temp2_crit rw "
	36	temp2_min_alarm ro "
	37	temp2_max_alarm ro "
	38	temp2_crit_alarm ro "
	39	temp2_fault ro "
	40
	41	fan1_input ro tachometer speed
	42	fan1_min rw "
	43	fan1_max rw "
	44	fan1_fault ro "
	45	fan1_div rw Fan divisor can be either 2 or 4.
	46
	47	pwm1 rw pwm1
	48	pwm1_enable rw regulator mode, 1=open loop, 2=fan controlled
	49	by remote temperature, 3=fan controlled by
	50	combination of the on-chip temperature and
	51	remote-sensor temperature,
	52	pwm1_auto_channels_temp ro 1 if pwm_enable==2, 3 if pwm_enable==3
	53	pwm1_auto_point1_pwm ro Hardwired to 0, shared for both
	54	temperature channels.
	55	pwm1_auto_point2_pwm rw This value is shared for both temperature
	56	channels.
	57	pwm1_auto_point3_pwm rw Hardwired to 255, shared for both
	58	temperature channels.
	59
	60	temp1_auto_point1_temp ro Hardwired to temp2_auto_point1_temp
	61	which is rw. Below this temperature fan stops.
	62	temp1_auto_point2_temp rw The low-temperature limit of the proportional
	63	range. Below this temperature
	64	pwm1 = pwm1_auto_point2_pwm. It can go from
	65	0 degree C to 124 degree C in steps of
	66	4 degree C. Read it out after writing to get
	67	the actual value.
	68	temp1_auto_point3_temp rw Above this temperature fan runs at maximum
	69	speed. It can go from temp1_auto_point2_temp.
	70	It can only have certain discrete values
	71	which depend on temp1_auto_point2_temp and
	72	pwm1_auto_point2_pwm. Read it out after
	73	writing to get the actual value.
	74
	75	temp2_auto_point1_temp rw Must be between 0 degree C and 63 degree C and
	76	it defines the passive cooling temperature.
	77	Below this temperature the fan stops in
	78	the closed loop mode.
	79	temp2_auto_point2_temp rw The low-temperature limit of the proportional
	80	range. Below this temperature
	81	pwm1 = pwm1_auto_point2_pwm. It can go from
	82	0 degree C to 124 degree C in steps
	83	of 4 degree C.
	84
	85	temp2_auto_point3_temp rw Above this temperature fan runs at maximum
	86	speed. It can only have certain discrete
	87	values which depend on temp2_auto_point2_temp
	88	and pwm1_auto_point2_pwm. Read it out after
	89	writing to get actual value.
	90
	91
	92	Module parameters
	93	-----------------
	94
	95	If your board has a BIOS that initializes the amc6821 correctly, you should
	96	load the module with: init=0.
	97
	98	If your board BIOS doesn't initialize the chip, or you want
	99	different settings, you can set the following parameters:
	100	init=1,
	101	pwminv: 0 default pwm output, 1 inverts pwm output.
	102