diff options
| -rw-r--r-- | Documentation/firmware-guide/acpi/dsd/leds.rst (renamed from Documentation/acpi/dsd/leds.txt) | 20 | ||||
| -rw-r--r-- | Documentation/firmware-guide/acpi/index.rst | 1 | ||||
| -rw-r--r-- | drivers/acpi/sbshc.h | 2 | ||||
| -rw-r--r-- | drivers/acpi/thermal.c | 11 |
4 files changed, 20 insertions, 14 deletions
diff --git a/Documentation/acpi/dsd/leds.txt b/Documentation/firmware-guide/acpi/dsd/leds.rst index cc58b1a574c5..946efe2b2936 100644 --- a/Documentation/acpi/dsd/leds.txt +++ b/Documentation/firmware-guide/acpi/dsd/leds.rst @@ -1,4 +1,9 @@ +.. 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. diff --git a/Documentation/firmware-guide/acpi/index.rst b/Documentation/firmware-guide/acpi/index.rst index 90c90d42d9ad..ad3b5afdae77 100644 --- a/Documentation/firmware-guide/acpi/index.rst +++ b/Documentation/firmware-guide/acpi/index.rst @@ -10,6 +10,7 @@ ACPI Support namespace dsd/graph dsd/data-node-references + dsd/leds enumeration osi method-customizing diff --git a/drivers/acpi/sbshc.h b/drivers/acpi/sbshc.h index 06372a37df10..c3522bb82792 100644 --- a/drivers/acpi/sbshc.h +++ b/drivers/acpi/sbshc.h @@ -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, diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c index 00f12a86ecbd..d831a61e0010 100644 --- a/drivers/acpi/thermal.c +++ b/drivers/acpi/thermal.c @@ -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); |