From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dan Murphy Subject: Re: [PATCH v2 1/2] leds: tlc591xx: simplify driver by using the managed led API Date: Mon, 8 Jul 2019 13:08:09 -0500 Message-ID: <127551c1-d642-0603-f2f2-6fd4cc43bb93@ti.com> References: <20190708100620.22388-1-jjhiblot@ti.com> <20190708100620.22388-2-jjhiblot@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20190708100620.22388-2-jjhiblot@ti.com> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: Jean-Jacques Hiblot , jacek.anaszewski@gmail.com, pavel@ucw.cz Cc: linux-leds@vger.kernel.org, linux-kernel@vger.kernel.org, tomi.valkeinen@ti.com List-Id: linux-leds@vger.kernel.org JJ On 7/8/19 5:06 AM, Jean-Jacques Hiblot wrote: > Use the managed API of the LED class (devm_led_classdev_register() > instead of led_classdev_register()). > This allows us to remove the code used to track-and-destroy the LED devices What changed from v1? I don't see any changes especially the bounds on the reg property. Dan > Signed-off-by: Jean-Jacques Hiblot > --- > drivers/leds/leds-tlc591xx.c | 79 +++++++++--------------------------- > 1 file changed, 20 insertions(+), 59 deletions(-) > > diff --git a/drivers/leds/leds-tlc591xx.c b/drivers/leds/leds-tlc591xx.c > index 59ff088c7d75..3d5a4b92f016 100644 > --- a/drivers/leds/leds-tlc591xx.c > +++ b/drivers/leds/leds-tlc591xx.c > @@ -128,51 +128,6 @@ tlc591xx_brightness_set(struct led_classdev *led_cdev, > return err; > } > > -static void > -tlc591xx_destroy_devices(struct tlc591xx_priv *priv, unsigned int j) > -{ > - int i = j; > - > - while (--i >= 0) { > - if (priv->leds[i].active) > - led_classdev_unregister(&priv->leds[i].ldev); > - } > -} > - > -static int > -tlc591xx_configure(struct device *dev, > - struct tlc591xx_priv *priv, > - const struct tlc591xx *tlc591xx) > -{ > - unsigned int i; > - int err = 0; > - > - tlc591xx_set_mode(priv->regmap, MODE2_DIM); > - for (i = 0; i < TLC591XX_MAX_LEDS; i++) { > - struct tlc591xx_led *led = &priv->leds[i]; > - > - if (!led->active) > - continue; > - > - led->priv = priv; > - led->led_no = i; > - led->ldev.brightness_set_blocking = tlc591xx_brightness_set; > - led->ldev.max_brightness = LED_FULL; > - err = led_classdev_register(dev, &led->ldev); > - if (err < 0) { > - dev_err(dev, "couldn't register LED %s\n", > - led->ldev.name); > - goto exit; > - } > - } > - > - return 0; > - > -exit: > - tlc591xx_destroy_devices(priv, i); > - return err; > -} > - > static const struct regmap_config tlc591xx_regmap = { > .reg_bits = 8, > .val_bits = 8, > @@ -225,7 +180,11 @@ tlc591xx_probe(struct i2c_client *client, > > i2c_set_clientdata(client, priv); > > + tlc591xx_set_mode(priv->regmap, MODE2_DIM); > + > for_each_child_of_node(np, child) { > + struct tlc591xx_led *led; > + > err = of_property_read_u32(child, "reg", ®); > if (err) { > of_node_put(child); > @@ -236,22 +195,25 @@ tlc591xx_probe(struct i2c_client *client, > of_node_put(child); > return -EINVAL; > } > - priv->leds[reg].active = true; > - priv->leds[reg].ldev.name = > + led = &priv->leds[reg]; > + > + led->active = true; > + led->ldev.name = > of_get_property(child, "label", NULL) ? : child->name; > - priv->leds[reg].ldev.default_trigger = > + led->ldev.default_trigger = > of_get_property(child, "linux,default-trigger", NULL); > - } > - return tlc591xx_configure(dev, priv, tlc591xx); > -} > - > -static int > -tlc591xx_remove(struct i2c_client *client) > -{ > - struct tlc591xx_priv *priv = i2c_get_clientdata(client); > - > - tlc591xx_destroy_devices(priv, TLC591XX_MAX_LEDS); > > + led->priv = priv; > + led->led_no = reg; > + led->ldev.brightness_set_blocking = tlc591xx_brightness_set; > + led->ldev.max_brightness = LED_FULL; > + err = devm_led_classdev_register(dev, &led->ldev); > + if (err < 0) { > + dev_err(dev, "couldn't register LED %s\n", > + led->ldev.name); > + return err; > + } > + } > return 0; > } > > @@ -268,7 +230,6 @@ static struct i2c_driver tlc591xx_driver = { > .of_match_table = of_match_ptr(of_tlc591xx_leds_match), > }, > .probe = tlc591xx_probe, > - .remove = tlc591xx_remove, > .id_table = tlc591xx_id, > }; > From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 50E4FC606BD for ; Mon, 8 Jul 2019 18:08:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2B67021852 for ; Mon, 8 Jul 2019 18:08:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="R9cVX7Mi" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730959AbfGHSIz (ORCPT ); Mon, 8 Jul 2019 14:08:55 -0400 Received: from lelv0143.ext.ti.com ([198.47.23.248]:46562 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730714AbfGHSIy (ORCPT ); Mon, 8 Jul 2019 14:08:54 -0400 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id x68I8pNT049069; Mon, 8 Jul 2019 13:08:51 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1562609331; bh=gDlRL2KY4kegZgACOvx1ncFnsIR8rOGXLXLEq91Ouik=; h=Subject:To:CC:References:From:Date:In-Reply-To; b=R9cVX7MiyWenX278Ns1pTM+0OQTqa4G2BHm6J2gEAQy5oTIYfUgF32RAeGtVdmz+A v6W7AlahQU/NixSUiwl/DKSK8ILxJ/4SOLqDGc9q+QbGHUnaArwB2QoknWWPwavKRn UdGrIjKTvaqACHFuM/+FqxqHbLqlGkPNKDkp4rxY= Received: from DFLE106.ent.ti.com (dfle106.ent.ti.com [10.64.6.27]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x68I8pSQ024728 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 8 Jul 2019 13:08:51 -0500 Received: from DFLE109.ent.ti.com (10.64.6.30) by DFLE106.ent.ti.com (10.64.6.27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Mon, 8 Jul 2019 13:08:50 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE109.ent.ti.com (10.64.6.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Mon, 8 Jul 2019 13:08:50 -0500 Received: from [10.250.65.13] (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id x68I8oBO051420; Mon, 8 Jul 2019 13:08:50 -0500 Subject: Re: [PATCH v2 1/2] leds: tlc591xx: simplify driver by using the managed led API To: Jean-Jacques Hiblot , , CC: , , References: <20190708100620.22388-1-jjhiblot@ti.com> <20190708100620.22388-2-jjhiblot@ti.com> From: Dan Murphy Message-ID: <127551c1-d642-0603-f2f2-6fd4cc43bb93@ti.com> Date: Mon, 8 Jul 2019 13:08:09 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: <20190708100620.22388-2-jjhiblot@ti.com> Content-Type: text/plain; charset="UTF-8"; format="flowed" Content-Transfer-Encoding: 7bit Content-Language: en-US X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-leds-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-leds@vger.kernel.org Message-ID: <20190708180809.oCyJF4Iy1B-RMzboasxzSzOY-WnMZZimYcnnZOjTu-k@z> JJ On 7/8/19 5:06 AM, Jean-Jacques Hiblot wrote: > Use the managed API of the LED class (devm_led_classdev_register() > instead of led_classdev_register()). > This allows us to remove the code used to track-and-destroy the LED devices What changed from v1? I don't see any changes especially the bounds on the reg property. Dan > Signed-off-by: Jean-Jacques Hiblot > --- > drivers/leds/leds-tlc591xx.c | 79 +++++++++--------------------------- > 1 file changed, 20 insertions(+), 59 deletions(-) > > diff --git a/drivers/leds/leds-tlc591xx.c b/drivers/leds/leds-tlc591xx.c > index 59ff088c7d75..3d5a4b92f016 100644 > --- a/drivers/leds/leds-tlc591xx.c > +++ b/drivers/leds/leds-tlc591xx.c > @@ -128,51 +128,6 @@ tlc591xx_brightness_set(struct led_classdev *led_cdev, > return err; > } > > -static void > -tlc591xx_destroy_devices(struct tlc591xx_priv *priv, unsigned int j) > -{ > - int i = j; > - > - while (--i >= 0) { > - if (priv->leds[i].active) > - led_classdev_unregister(&priv->leds[i].ldev); > - } > -} > - > -static int > -tlc591xx_configure(struct device *dev, > - struct tlc591xx_priv *priv, > - const struct tlc591xx *tlc591xx) > -{ > - unsigned int i; > - int err = 0; > - > - tlc591xx_set_mode(priv->regmap, MODE2_DIM); > - for (i = 0; i < TLC591XX_MAX_LEDS; i++) { > - struct tlc591xx_led *led = &priv->leds[i]; > - > - if (!led->active) > - continue; > - > - led->priv = priv; > - led->led_no = i; > - led->ldev.brightness_set_blocking = tlc591xx_brightness_set; > - led->ldev.max_brightness = LED_FULL; > - err = led_classdev_register(dev, &led->ldev); > - if (err < 0) { > - dev_err(dev, "couldn't register LED %s\n", > - led->ldev.name); > - goto exit; > - } > - } > - > - return 0; > - > -exit: > - tlc591xx_destroy_devices(priv, i); > - return err; > -} > - > static const struct regmap_config tlc591xx_regmap = { > .reg_bits = 8, > .val_bits = 8, > @@ -225,7 +180,11 @@ tlc591xx_probe(struct i2c_client *client, > > i2c_set_clientdata(client, priv); > > + tlc591xx_set_mode(priv->regmap, MODE2_DIM); > + > for_each_child_of_node(np, child) { > + struct tlc591xx_led *led; > + > err = of_property_read_u32(child, "reg", ®); > if (err) { > of_node_put(child); > @@ -236,22 +195,25 @@ tlc591xx_probe(struct i2c_client *client, > of_node_put(child); > return -EINVAL; > } > - priv->leds[reg].active = true; > - priv->leds[reg].ldev.name = > + led = &priv->leds[reg]; > + > + led->active = true; > + led->ldev.name = > of_get_property(child, "label", NULL) ? : child->name; > - priv->leds[reg].ldev.default_trigger = > + led->ldev.default_trigger = > of_get_property(child, "linux,default-trigger", NULL); > - } > - return tlc591xx_configure(dev, priv, tlc591xx); > -} > - > -static int > -tlc591xx_remove(struct i2c_client *client) > -{ > - struct tlc591xx_priv *priv = i2c_get_clientdata(client); > - > - tlc591xx_destroy_devices(priv, TLC591XX_MAX_LEDS); > > + led->priv = priv; > + led->led_no = reg; > + led->ldev.brightness_set_blocking = tlc591xx_brightness_set; > + led->ldev.max_brightness = LED_FULL; > + err = devm_led_classdev_register(dev, &led->ldev); > + if (err < 0) { > + dev_err(dev, "couldn't register LED %s\n", > + led->ldev.name); > + return err; > + } > + } > return 0; > } > > @@ -268,7 +230,6 @@ static struct i2c_driver tlc591xx_driver = { > .of_match_table = of_match_ptr(of_tlc591xx_leds_match), > }, > .probe = tlc591xx_probe, > - .remove = tlc591xx_remove, > .id_table = tlc591xx_id, > }; >