From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ezequiel Garcia Subject: [PATCH 0/5] Extend the LED panic trigger Date: Mon, 4 Apr 2016 17:22:01 -0300 Message-ID: <1459801326-5541-1-git-send-email-ezequiel@vanguardiasur.com.ar> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Richard Purdie , Jacek Anaszewski , Ezequiel Garcia List-Id: linux-leds@vger.kernel.org As per commit 916fe61995 ("leds: trigger: Introduce a kernel panic LED trigger"), the kernel now supports a new LED trigger to hook on the panic blink. However, the only way of using this is to dedicate a LED device to this function. To overcome this limitation, the present series introduces the capability to switch the LED trigger of certain LED devices upon a kernel panic (using the panic notifier). The decision of which LEDs should be switched to the panic trigger is left to each LED device driver. As an example, a devicetree boolean property is introduced and used in the leds-gpio driver. Feedback and other ideas on how to implement this are most welcomed. Ezequiel Garcia (5): leds: triggers: Allow to switch the trigger to "panic" on a kernel panic leds: triggers: Add a led_trigger_event_nosleep API leds: trigger: panic: Use led_trigger_event_nosleep devicetree: leds: Introduce "panic-blink" optional property leds: gpio: Support the panic-blink firmware property Documentation/devicetree/bindings/leds/common.txt | 2 + drivers/leds/led-triggers.c | 78 +++++++++++++++++++++-- drivers/leds/leds-gpio.c | 4 ++ drivers/leds/trigger/ledtrig-panic.c | 2 +- include/linux/leds.h | 6 ++ 5 files changed, 87 insertions(+), 5 deletions(-) -- 2.7.0 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756448AbcDDUWW (ORCPT ); Mon, 4 Apr 2016 16:22:22 -0400 Received: from mail-qg0-f51.google.com ([209.85.192.51]:36839 "EHLO mail-qg0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756383AbcDDUWU (ORCPT ); Mon, 4 Apr 2016 16:22:20 -0400 From: Ezequiel Garcia To: , , Cc: Richard Purdie , Jacek Anaszewski , Ezequiel Garcia Subject: [PATCH 0/5] Extend the LED panic trigger Date: Mon, 4 Apr 2016 17:22:01 -0300 Message-Id: <1459801326-5541-1-git-send-email-ezequiel@vanguardiasur.com.ar> X-Mailer: git-send-email 2.7.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As per commit 916fe61995 ("leds: trigger: Introduce a kernel panic LED trigger"), the kernel now supports a new LED trigger to hook on the panic blink. However, the only way of using this is to dedicate a LED device to this function. To overcome this limitation, the present series introduces the capability to switch the LED trigger of certain LED devices upon a kernel panic (using the panic notifier). The decision of which LEDs should be switched to the panic trigger is left to each LED device driver. As an example, a devicetree boolean property is introduced and used in the leds-gpio driver. Feedback and other ideas on how to implement this are most welcomed. Ezequiel Garcia (5): leds: triggers: Allow to switch the trigger to "panic" on a kernel panic leds: triggers: Add a led_trigger_event_nosleep API leds: trigger: panic: Use led_trigger_event_nosleep devicetree: leds: Introduce "panic-blink" optional property leds: gpio: Support the panic-blink firmware property Documentation/devicetree/bindings/leds/common.txt | 2 + drivers/leds/led-triggers.c | 78 +++++++++++++++++++++-- drivers/leds/leds-gpio.c | 4 ++ drivers/leds/trigger/ledtrig-panic.c | 2 +- include/linux/leds.h | 6 ++ 5 files changed, 87 insertions(+), 5 deletions(-) -- 2.7.0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: ezequiel@vanguardiasur.com.ar (Ezequiel Garcia) Date: Mon, 4 Apr 2016 17:22:01 -0300 Subject: [PATCH 0/5] Extend the LED panic trigger Message-ID: <1459801326-5541-1-git-send-email-ezequiel@vanguardiasur.com.ar> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org As per commit 916fe61995 ("leds: trigger: Introduce a kernel panic LED trigger"), the kernel now supports a new LED trigger to hook on the panic blink. However, the only way of using this is to dedicate a LED device to this function. To overcome this limitation, the present series introduces the capability to switch the LED trigger of certain LED devices upon a kernel panic (using the panic notifier). The decision of which LEDs should be switched to the panic trigger is left to each LED device driver. As an example, a devicetree boolean property is introduced and used in the leds-gpio driver. Feedback and other ideas on how to implement this are most welcomed. Ezequiel Garcia (5): leds: triggers: Allow to switch the trigger to "panic" on a kernel panic leds: triggers: Add a led_trigger_event_nosleep API leds: trigger: panic: Use led_trigger_event_nosleep devicetree: leds: Introduce "panic-blink" optional property leds: gpio: Support the panic-blink firmware property Documentation/devicetree/bindings/leds/common.txt | 2 + drivers/leds/led-triggers.c | 78 +++++++++++++++++++++-- drivers/leds/leds-gpio.c | 4 ++ drivers/leds/trigger/ledtrig-panic.c | 2 +- include/linux/leds.h | 6 ++ 5 files changed, 87 insertions(+), 5 deletions(-) -- 2.7.0