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Commit 0b3e7973 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

Merge branches 'acpi-misc' and 'acpi-doc' 

* acpi-misc:
  ACPI: thermal: Remove redundant acpi_has_method() calls
  ACPI: SBS: remove unused const variable 'SMBUS_PEC'

* acpi-doc:
  Documentation: ACPI: DSD: Convert LED documentation to ReST
parents a781f393 e88c7409 2b2d4247

Documentation/acpi/dsd/leds.txt→Documentation/firmware-guide/acpi/dsd/leds.rst

+16 −4
Original line number Diff line number Diff line 
.. SPDX-License-Identifier: GPL-2.0

.. include:: <isonum.txt>



========================================

Describing and referring to LEDs in ACPI

========================================



Individual LEDs are described by hierarchical data extension [6] nodes under the

device node, the LED driver chip. The "reg" property in the LED specific nodes
@@ -25,8 +30,12 @@ entry shall contain the string "led@" followed by the number of the LED, 
followed by the referred object name. That object shall be named "LED" followed

by the number of the LED.



An ASL example of a camera sensor device and a LED driver device for two LEDs.

Objects not relevant for LEDs or the references to them have been omitted.

Example

=======



An ASL example of a camera sensor device and a LED driver device for two LEDs is

show below. Objects not relevant for LEDs or the references to them have been

omitted. ::



	Device (LED)

	{
@@ -71,12 +80,15 @@ Objects not relevant for LEDs or the references to them have been omitted. 
	}



where

::



	LED	LED driver device

	LED0	First LED

	LED1	Second LED

	SEN	Camera sensor device (or another device the LED is

		related to)

	SEN	Camera sensor device (or another device the LED is related to)



References

==========



[1] Device tree. <URL:http://www.devicetree.org>, referenced 2019-02-21.

Documentation/firmware-guide/acpi/index.rst

+1 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ ACPI Support 
   namespace

   dsd/graph

   dsd/data-node-references

   dsd/leds

   enumeration

   osi

   method-customizing

drivers/acpi/sbshc.h

+0 −2
Original line number Diff line number Diff line
@@ -15,8 +15,6 @@ enum acpi_smb_protocol { 
	SMBUS_BLOCK_PROCESS_CALL = 0xd,

};



static const u8 SMBUS_PEC = 0x80;



enum acpi_sbs_device_addr {

	ACPI_SBS_CHARGER = 0x9,

	ACPI_SBS_MANAGER = 0xa,

drivers/acpi/thermal.c

+3 −8
Original line number Diff line number Diff line
@@ -225,13 +225,9 @@ static int acpi_thermal_set_cooling_mode(struct acpi_thermal *tz, int mode) 
	if (!tz)

		return -EINVAL;



	if (!acpi_has_method(tz->device->handle, "_SCP")) {

		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "_SCP not present\n"));

	if (ACPI_FAILURE(acpi_execute_simple_method(tz->device->handle,

						    "_SCP", mode)))

		return -ENODEV;

	} else if (ACPI_FAILURE(acpi_execute_simple_method(tz->device->handle,

							   "_SCP", mode))) {

		return -ENODEV;

	}



	return 0;

}
@@ -463,8 +459,7 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag) 
			break;

	}



	if ((flag & ACPI_TRIPS_DEVICES)

	    && acpi_has_method(tz->device->handle, "_TZD")) {

	if (flag & ACPI_TRIPS_DEVICES) {

		memset(&devices, 0, sizeof(devices));

		status = acpi_evaluate_reference(tz->device->handle, "_TZD",

						NULL, &devices);