From patchwork Fri May 10 19:40:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 796292 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BB2A1481CD for ; Fri, 10 May 2024 19:40:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715370023; cv=none; b=ndLdhgAQaAGB7MfRGFhTQmTzMXa6dBCLBzq1k+EFCjlDxZJqsmnRwreLjYIMOrpGmFcjML/sLInvyt5OCgY1P7BMnET3K+ASwafGkLL+kiaaR5ePO3R/HVMkSVGey5Ogo8JZJIUYiJ1dtVWRpv+ChNCsTzCcFklvXXQ4s5FTcsw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715370023; c=relaxed/simple; bh=J672J0h347KyeUqgMW9VrbQ1xqg+pN5aaY17LkDooxA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VrBWIDW3mAfAKqe3/sbXAb45UP2sxXn6J54+IxL0BDtjb+t6GDd8PzWCpXV2AYK8dSS+v5gBF0yrS7H1AKla1f4SZfTXfX2aoaH1Ynzhvp9JRsJkS42MYjIWKhjXeBpHiywG3QL2gs/4aHS1JpHeoa9bQb5LLZvwLuFR2OwtqOU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=jJ5HH7qp; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="jJ5HH7qp" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1715370020; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=V6UJqMrrSTSU3lh8UxxUI8YqAMgHK2nejP0JTCqC834=; b=jJ5HH7qpprRXPwnFbIQKjUPmQol2sOZbWCdO/NlyxtV6+LsPwNfhUzfnXc3DR6QjTcC3us zqWClfOUg93hyeRIgUeAYZD8KrcwNKJhkROXeFc6xSEiVQZjauG6M7cqTJEodP23zczCCs ipDa3+1iWB+ra2pxb/4VZ8QZk+0Pxxg= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-484-bksQvYcIM6C1dZ7EQX484g-1; Fri, 10 May 2024 15:40:17 -0400 X-MC-Unique: bksQvYcIM6C1dZ7EQX484g-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id C783729AA3AE; Fri, 10 May 2024 19:40:16 +0000 (UTC) Received: from shalem.redhat.com (unknown [10.39.192.42]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5AA1640D1EA; Fri, 10 May 2024 19:40:15 +0000 (UTC) From: Hans de Goede To: =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Andy Shevchenko , Pavel Machek , Lee Jones , Kate Hsuan , Sebastian Reichel Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, =?utf-8?q?Andr=C3=A9_Apitzsch?= , linux-leds@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH 1/3] power: supply: power-supply-leds: Add power_supply_[un]register_led_trigger() Date: Fri, 10 May 2024 21:40:10 +0200 Message-ID: <20240510194012.138192-2-hdegoede@redhat.com> In-Reply-To: <20240510194012.138192-1-hdegoede@redhat.com> References: <20240510194012.138192-1-hdegoede@redhat.com> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.10 Add power_supply_[un]register_led_trigger() helper functions. The primary goal of this is as a preparation patch for adding an activate callback to the power-supply LED triggers to ensure that power-supply LEDs get the correct initial value when the LED gets registered after the power_supply has been registered (this will use the psy back pointer). There also is quite a lot of code duplication in the existing LED trigger registration in the form of the kasprintf() for the name-template for each trigger + related error handling. This duplication is removed by these new helpers. Signed-off-by: Hans de Goede --- drivers/power/supply/power_supply_leds.c | 155 ++++++++++++----------- include/linux/power_supply.h | 6 - 2 files changed, 84 insertions(+), 77 deletions(-) diff --git a/drivers/power/supply/power_supply_leds.c b/drivers/power/supply/power_supply_leds.c index 73935de844d9..3e20b0f30aa3 100644 --- a/drivers/power/supply/power_supply_leds.c +++ b/drivers/power/supply/power_supply_leds.c @@ -19,6 +19,57 @@ /* Battery specific LEDs triggers. */ +struct power_supply_led_trigger { + struct led_trigger trig; + struct power_supply *psy; +}; + +static int power_supply_register_led_trigger(struct power_supply *psy, + const char *name_template, + struct led_trigger **tp) +{ + struct power_supply_led_trigger *psy_trig; + int err; + + psy_trig = kzalloc(sizeof(*psy_trig), GFP_KERNEL); + if (!psy_trig) + return -ENOMEM; + + psy_trig->trig.name = kasprintf(GFP_KERNEL, name_template, psy->desc->name); + if (!psy_trig->trig.name) { + err = -ENOMEM; + goto err_free_trigger; + } + + psy_trig->psy = psy; + + err = led_trigger_register(&psy_trig->trig); + if (err) + goto err_free_name; + + *tp = &psy_trig->trig; + return 0; + +err_free_name: + kfree(psy_trig->trig.name); +err_free_trigger: + kfree(psy_trig); + return -ENOMEM; +} + +static void power_supply_unregister_led_trigger(struct led_trigger *trig) +{ + struct power_supply_led_trigger *psy_trig; + + if (!trig) + return; + + psy_trig = container_of(trig, struct power_supply_led_trigger, trig); + led_trigger_unregister(&psy_trig->trig); + kfree(psy_trig->trig.name); + kfree(psy_trig); +} + static void power_supply_update_bat_leds(struct power_supply *psy) { union power_supply_propval status; @@ -65,69 +116,39 @@ static void power_supply_update_bat_leds(struct power_supply *psy) } } -static int power_supply_create_bat_triggers(struct power_supply *psy) -{ - psy->charging_full_trig_name = kasprintf(GFP_KERNEL, - "%s-charging-or-full", psy->desc->name); - if (!psy->charging_full_trig_name) - goto charging_full_failed; - - psy->charging_trig_name = kasprintf(GFP_KERNEL, - "%s-charging", psy->desc->name); - if (!psy->charging_trig_name) - goto charging_failed; - - psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->desc->name); - if (!psy->full_trig_name) - goto full_failed; - - psy->charging_blink_full_solid_trig_name = kasprintf(GFP_KERNEL, - "%s-charging-blink-full-solid", psy->desc->name); - if (!psy->charging_blink_full_solid_trig_name) - goto charging_blink_full_solid_failed; - - psy->charging_orange_full_green_trig_name = kasprintf(GFP_KERNEL, - "%s-charging-orange-full-green", psy->desc->name); - if (!psy->charging_orange_full_green_trig_name) - goto charging_red_full_green_failed; - - led_trigger_register_simple(psy->charging_full_trig_name, - &psy->charging_full_trig); - led_trigger_register_simple(psy->charging_trig_name, - &psy->charging_trig); - led_trigger_register_simple(psy->full_trig_name, - &psy->full_trig); - led_trigger_register_simple(psy->charging_blink_full_solid_trig_name, - &psy->charging_blink_full_solid_trig); - led_trigger_register_simple(psy->charging_orange_full_green_trig_name, - &psy->charging_orange_full_green_trig); - - return 0; - -charging_red_full_green_failed: - kfree(psy->charging_blink_full_solid_trig_name); -charging_blink_full_solid_failed: - kfree(psy->full_trig_name); -full_failed: - kfree(psy->charging_trig_name); -charging_failed: - kfree(psy->charging_full_trig_name); -charging_full_failed: - return -ENOMEM; -} - static void power_supply_remove_bat_triggers(struct power_supply *psy) { - led_trigger_unregister_simple(psy->charging_full_trig); - led_trigger_unregister_simple(psy->charging_trig); - led_trigger_unregister_simple(psy->full_trig); - led_trigger_unregister_simple(psy->charging_blink_full_solid_trig); - led_trigger_unregister_simple(psy->charging_orange_full_green_trig); - kfree(psy->charging_blink_full_solid_trig_name); - kfree(psy->full_trig_name); - kfree(psy->charging_trig_name); - kfree(psy->charging_full_trig_name); - kfree(psy->charging_orange_full_green_trig_name); + power_supply_unregister_led_trigger(psy->charging_full_trig); + power_supply_unregister_led_trigger(psy->charging_trig); + power_supply_unregister_led_trigger(psy->full_trig); + power_supply_unregister_led_trigger(psy->charging_blink_full_solid_trig); + power_supply_unregister_led_trigger(psy->charging_orange_full_green_trig); +} + +static int power_supply_create_bat_triggers(struct power_supply *psy) +{ + int err = 0; + + err |= power_supply_register_led_trigger(psy, "%s-charging-or-full", + &psy->charging_full_trig); + err |= power_supply_register_led_trigger(psy, "%s-charging", + &psy->charging_trig); + err |= power_supply_register_led_trigger(psy, "%s-full", + &psy->full_trig); + err |= power_supply_register_led_trigger(psy, "%s-charging-blink-full-solid", + &psy->charging_blink_full_solid_trig); + err |= power_supply_register_led_trigger(psy, "%s-charging-orange-full-green", + &psy->charging_orange_full_green_trig); + if (err) { + power_supply_remove_bat_triggers(psy); + /* + * led_trigger_register() may also return -EEXIST but that should + * never happen with the dynamically generated psy trigger names. + */ + return -ENOMEM; + } + + return 0; } /* Generated power specific LEDs triggers. */ @@ -149,20 +170,12 @@ static void power_supply_update_gen_leds(struct power_supply *psy) static int power_supply_create_gen_triggers(struct power_supply *psy) { - psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online", - psy->desc->name); - if (!psy->online_trig_name) - return -ENOMEM; - - led_trigger_register_simple(psy->online_trig_name, &psy->online_trig); - - return 0; + return power_supply_register_led_trigger(psy, "%s-online", &psy->online_trig); } static void power_supply_remove_gen_triggers(struct power_supply *psy) { - led_trigger_unregister_simple(psy->online_trig); - kfree(psy->online_trig_name); + power_supply_unregister_led_trigger(psy->online_trig); } /* Choice what triggers to create&update. */ diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index c852cc882501..e218a8ab72ee 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -310,17 +310,11 @@ struct power_supply { #ifdef CONFIG_LEDS_TRIGGERS struct led_trigger *charging_full_trig; - char *charging_full_trig_name; struct led_trigger *charging_trig; - char *charging_trig_name; struct led_trigger *full_trig; - char *full_trig_name; struct led_trigger *online_trig; - char *online_trig_name; struct led_trigger *charging_blink_full_solid_trig; - char *charging_blink_full_solid_trig_name; struct led_trigger *charging_orange_full_green_trig; - char *charging_orange_full_green_trig_name; #endif }; From patchwork Fri May 10 19:40:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 796291 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4ED0D487B3 for ; Fri, 10 May 2024 19:40:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; 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Fri, 10 May 2024 19:40:18 +0000 (UTC) Received: from shalem.redhat.com (unknown [10.39.192.42]) by smtp.corp.redhat.com (Postfix) with ESMTP id 02FD140004D; Fri, 10 May 2024 19:40:16 +0000 (UTC) From: Hans de Goede To: =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Andy Shevchenko , Pavel Machek , Lee Jones , Kate Hsuan , Sebastian Reichel Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, =?utf-8?q?Andr=C3=A9_Apitzsch?= , linux-leds@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH 2/3] power: supply: power-supply-leds: Share trig pointer for online and charging_full Date: Fri, 10 May 2024 21:40:11 +0200 Message-ID: <20240510194012.138192-3-hdegoede@redhat.com> In-Reply-To: <20240510194012.138192-1-hdegoede@redhat.com> References: <20240510194012.138192-1-hdegoede@redhat.com> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.10 Either 5 different LED triggers are registered for battery power-supply devices or a single online LED trigger is used for non battery power-supply devices. These 5 / 1 LED trigger(s) are never used at the same time. So there is no need for a separate LED trigger pointer for the online trigger. Rename the first battery trigger from charging_full_trig to just trig and use this for the online trigger too. Signed-off-by: Hans de Goede --- drivers/power/supply/power_supply_leds.c | 18 +++++++++--------- include/linux/power_supply.h | 3 +-- 2 files changed, 10 insertions(+), 11 deletions(-) diff --git a/drivers/power/supply/power_supply_leds.c b/drivers/power/supply/power_supply_leds.c index 3e20b0f30aa3..634f7d33afd0 100644 --- a/drivers/power/supply/power_supply_leds.c +++ b/drivers/power/supply/power_supply_leds.c @@ -83,7 +83,7 @@ static void power_supply_update_bat_leds(struct power_supply *psy) switch (status.intval) { case POWER_SUPPLY_STATUS_FULL: - led_trigger_event(psy->charging_full_trig, LED_FULL); + led_trigger_event(psy->trig, LED_FULL); led_trigger_event(psy->charging_trig, LED_OFF); led_trigger_event(psy->full_trig, LED_FULL); /* Going from blink to LED on requires a LED_OFF event to stop blink */ @@ -95,7 +95,7 @@ static void power_supply_update_bat_leds(struct power_supply *psy) LED_FULL); break; case POWER_SUPPLY_STATUS_CHARGING: - led_trigger_event(psy->charging_full_trig, LED_FULL); + led_trigger_event(psy->trig, LED_FULL); led_trigger_event(psy->charging_trig, LED_FULL); led_trigger_event(psy->full_trig, LED_OFF); led_trigger_blink(psy->charging_blink_full_solid_trig, 0, 0); @@ -105,7 +105,7 @@ static void power_supply_update_bat_leds(struct power_supply *psy) LED_FULL); break; default: - led_trigger_event(psy->charging_full_trig, LED_OFF); + led_trigger_event(psy->trig, LED_OFF); led_trigger_event(psy->charging_trig, LED_OFF); led_trigger_event(psy->full_trig, LED_OFF); led_trigger_event(psy->charging_blink_full_solid_trig, @@ -118,7 +118,7 @@ static void power_supply_update_bat_leds(struct power_supply *psy) static void power_supply_remove_bat_triggers(struct power_supply *psy) { - power_supply_unregister_led_trigger(psy->charging_full_trig); + power_supply_unregister_led_trigger(psy->trig); power_supply_unregister_led_trigger(psy->charging_trig); power_supply_unregister_led_trigger(psy->full_trig); power_supply_unregister_led_trigger(psy->charging_blink_full_solid_trig); @@ -130,7 +130,7 @@ static int power_supply_create_bat_triggers(struct power_supply *psy) int err = 0; err |= power_supply_register_led_trigger(psy, "%s-charging-or-full", - &psy->charging_full_trig); + &psy->trig); err |= power_supply_register_led_trigger(psy, "%s-charging", &psy->charging_trig); err |= power_supply_register_led_trigger(psy, "%s-full", @@ -163,19 +163,19 @@ static void power_supply_update_gen_leds(struct power_supply *psy) dev_dbg(&psy->dev, "%s %d\n", __func__, online.intval); if (online.intval) - led_trigger_event(psy->online_trig, LED_FULL); + led_trigger_event(psy->trig, LED_FULL); else - led_trigger_event(psy->online_trig, LED_OFF); + led_trigger_event(psy->trig, LED_OFF); } static int power_supply_create_gen_triggers(struct power_supply *psy) { - return power_supply_register_led_trigger(psy, "%s-online", &psy->online_trig); + return power_supply_register_led_trigger(psy, "%s-online", &psy->trig); } static void power_supply_remove_gen_triggers(struct power_supply *psy) { - power_supply_unregister_led_trigger(psy->online_trig); + power_supply_unregister_led_trigger(psy->trig); } /* Choice what triggers to create&update. */ diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h index e218a8ab72ee..65082ef75692 100644 --- a/include/linux/power_supply.h +++ b/include/linux/power_supply.h @@ -309,10 +309,9 @@ struct power_supply { #endif #ifdef CONFIG_LEDS_TRIGGERS - struct led_trigger *charging_full_trig; + struct led_trigger *trig; struct led_trigger *charging_trig; struct led_trigger *full_trig; - struct led_trigger *online_trig; struct led_trigger *charging_blink_full_solid_trig; struct led_trigger *charging_orange_full_green_trig; #endif From patchwork Fri May 10 19:40:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 796156 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2792F487B3 for ; 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Fri, 10 May 2024 15:40:20 -0400 X-MC-Unique: LV_eOQ1nMGWL7GDOHBXICQ-1 Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id DF13B800206; Fri, 10 May 2024 19:40:19 +0000 (UTC) Received: from shalem.redhat.com (unknown [10.39.192.42]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8B3EA40D184; Fri, 10 May 2024 19:40:18 +0000 (UTC) From: Hans de Goede To: =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Andy Shevchenko , Pavel Machek , Lee Jones , Kate Hsuan , Sebastian Reichel Cc: Hans de Goede , platform-driver-x86@vger.kernel.org, =?utf-8?q?Andr=C3=A9_Apitzsch?= , linux-leds@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH 3/3] power: supply: power-supply-leds: Add activate() callback to triggers Date: Fri, 10 May 2024 21:40:12 +0200 Message-ID: <20240510194012.138192-4-hdegoede@redhat.com> In-Reply-To: <20240510194012.138192-1-hdegoede@redhat.com> References: <20240510194012.138192-1-hdegoede@redhat.com> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.10 Add an activate() callback to the power-supply LED triggers so that the LED being activated will properly reflect the current power-supply state for power-supply devices which are already fully registered when the trigger gets activated. This fixes e.g. wrong LED state (1) when the LED gets registered after the power-supply device. 1) Until the psy driver has a reason to call power_supply_changed() which may take quite a while Signed-off-by: Hans de Goede --- drivers/power/supply/power_supply_leds.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/power/supply/power_supply_leds.c b/drivers/power/supply/power_supply_leds.c index 634f7d33afd0..7ff6d41671b9 100644 --- a/drivers/power/supply/power_supply_leds.c +++ b/drivers/power/supply/power_supply_leds.c @@ -24,6 +24,16 @@ struct power_supply_led_trigger { struct power_supply *psy; }; +static int power_supply_led_trigger_activate(struct led_classdev *led_cdev) +{ + struct power_supply_led_trigger *psy_trig = + container_of(led_cdev->trigger, struct power_supply_led_trigger, trig); + + /* Sync current power-supply state to LED being activated */ + power_supply_update_leds(psy_trig->psy); + return 0; +} + static int power_supply_register_led_trigger(struct power_supply *psy, const char *name_template, struct led_trigger **tp) @@ -41,6 +51,7 @@ static int power_supply_register_led_trigger(struct power_supply *psy, goto err_free_trigger; } + psy_trig->trig.activate = power_supply_led_trigger_activate; psy_trig->psy = psy; err = led_trigger_register(&psy_trig->trig);