From patchwork Tue Apr 16 05:39:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kate Hsuan X-Patchwork-Id: 790909 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 4259A3BBE2 for ; Tue, 16 Apr 2024 05:39:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713245998; cv=none; b=uJrxCNmV1CuJh+RlhuCqjOquMv9cWfEOS18VhHVTJB6F+9J1ja13GbOb67RSPtkRu0Wec2i0A03/FdqKgGrEiIFjLPCnHRQG/5dmoh1lFUwgp+i2gMoa5V7DdgOVtt0QyCe7Z62GhymZP/PncHipZkxnPzhD/EwuDDwINnh265s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713245998; c=relaxed/simple; bh=3o8fsDoKxogUP+giW3mIfjii4mwpSVRjSxzxi91sHP0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=R4+/J9jLPq6SFwfOOA/HIOAt4/kfP6mGOZBi37tL5DP0RWfhUe1x0A83Ae4aZZMeobzGC5LCof/2lcyQws5DSg2+aSJzzpfhAd8gDF7TXiZRkUk3LEYpocNHON8HCCHykandGtOKk/lZ5Id55lOy28NU2BFbHym5k/P67FGKzyw= 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=Am5P77VP; arc=none smtp.client-ip=170.10.129.124 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="Am5P77VP" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1713245996; 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=I+zNkS3A/joay3pty9yb1Z8mlEWvfV88sj5f9kywark=; b=Am5P77VPAPAolkOrLxmVb/C9Am8e4tc7GI0csU88yzuW5xwTRV9eVr39tg1TwpfYenWyY5 j8q8Mcw7WYzBv9D4qKokcuZW1ePfQLZ4DpAe1fE0k7munvvRs+Ugpn7QbyHwYoxSDYK7fu GfQbU9OZ377Jptq/zh6hVn1z5uKQdug= 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-133-4kDOlOtyO7aBV0MVXLd1yQ-1; Tue, 16 Apr 2024 01:39:53 -0400 X-MC-Unique: 4kDOlOtyO7aBV0MVXLd1yQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (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 5E6F9380390E; Tue, 16 Apr 2024 05:39:52 +0000 (UTC) Received: from fedora.redhat.com (unknown [10.39.192.2]) by smtp.corp.redhat.com (Postfix) with ESMTP id AF21251EF; Tue, 16 Apr 2024 05:39:46 +0000 (UTC) From: Kate Hsuan To: Pavel Machek , Lee Jones , linux-leds@vger.kernel.org, platform-driver-x86@vger.kernel.org, Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , =?utf-8?q?A?= =?utf-8?q?ndr=C3=A9_Apitzsch?= , linux-kernel@vger.kernel.org, Andy Shevchenko , Sebastian Reichel , linux-pm@vger.kernel.org Cc: Kate Hsuan Subject: [PATCH v6 2/5] leds: rgb: leds-ktd202x: Get device properties through fwnode to support ACPI Date: Tue, 16 Apr 2024 13:39:06 +0800 Message-ID: <20240416053909.256319-3-hpa@redhat.com> In-Reply-To: <20240416053909.256319-1-hpa@redhat.com> References: <20240416053909.256319-1-hpa@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 10.11.54.5 This LED controller is installed on a Xiaomi pad2 and it is an x86 platform. The original driver is based on the device tree and can't be used for this ACPI based system. This patch migrated the driver to use fwnode to access the properties. Moreover, the fwnode API supports the device tree so this work won't affect the original implementations. Signed-off-by: Kate Hsuan --- drivers/leds/rgb/Kconfig | 1 - drivers/leds/rgb/leds-ktd202x.c | 67 ++++++++++++++++++--------------- 2 files changed, 37 insertions(+), 31 deletions(-) diff --git a/drivers/leds/rgb/Kconfig b/drivers/leds/rgb/Kconfig index e66bd21b9852..14d6b294a786 100644 --- a/drivers/leds/rgb/Kconfig +++ b/drivers/leds/rgb/Kconfig @@ -17,7 +17,6 @@ config LEDS_GROUP_MULTICOLOR config LEDS_KTD202X tristate "LED support for KTD202x Chips" depends on I2C - depends on OF select REGMAP_I2C help This option enables support for the Kinetic KTD2026/KTD2027 diff --git a/drivers/leds/rgb/leds-ktd202x.c b/drivers/leds/rgb/leds-ktd202x.c index 514965795a10..8d0ed1a95a9f 100644 --- a/drivers/leds/rgb/leds-ktd202x.c +++ b/drivers/leds/rgb/leds-ktd202x.c @@ -99,7 +99,7 @@ struct ktd202x { struct device *dev; struct regmap *regmap; bool enabled; - int num_leds; + unsigned long num_leds; struct ktd202x_led leds[] __counted_by(num_leds); }; @@ -381,16 +381,18 @@ static int ktd202x_blink_mc_set(struct led_classdev *cdev, mc->num_colors); } -static int ktd202x_setup_led_rgb(struct ktd202x *chip, struct device_node *np, +static int ktd202x_setup_led_rgb(struct ktd202x *chip, struct fwnode_handle *fwnode, struct ktd202x_led *led, struct led_init_data *init_data) { + struct fwnode_handle *child; struct led_classdev *cdev; - struct device_node *child; struct mc_subled *info; - int num_channels; + int num_channels = 0; int i = 0; - num_channels = of_get_available_child_count(np); + fwnode_for_each_available_child_node(fwnode, child) + num_channels++; + if (!num_channels || num_channels > chip->num_leds) return -EINVAL; @@ -398,22 +400,22 @@ static int ktd202x_setup_led_rgb(struct ktd202x *chip, struct device_node *np, if (!info) return -ENOMEM; - for_each_available_child_of_node(np, child) { + fwnode_for_each_available_child_node(fwnode, child) { u32 mono_color; u32 reg; int ret; - ret = of_property_read_u32(child, "reg", ®); + ret = fwnode_property_read_u32(child, "reg", ®); if (ret != 0 || reg >= chip->num_leds) { - dev_err(chip->dev, "invalid 'reg' of %pOFn\n", child); - of_node_put(child); - return -EINVAL; + dev_err(chip->dev, "invalid 'reg' of %pfw\n", child); + fwnode_handle_put(child); + return ret; } - ret = of_property_read_u32(child, "color", &mono_color); + ret = fwnode_property_read_u32(child, "color", &mono_color); if (ret < 0 && ret != -EINVAL) { - dev_err(chip->dev, "failed to parse 'color' of %pOF\n", child); - of_node_put(child); + dev_err(chip->dev, "failed to parse 'color' of %pfw\n", child); + fwnode_handle_put(child); return ret; } @@ -433,16 +435,16 @@ static int ktd202x_setup_led_rgb(struct ktd202x *chip, struct device_node *np, return devm_led_classdev_multicolor_register_ext(chip->dev, &led->mcdev, init_data); } -static int ktd202x_setup_led_single(struct ktd202x *chip, struct device_node *np, +static int ktd202x_setup_led_single(struct ktd202x *chip, struct fwnode_handle *fwnode, struct ktd202x_led *led, struct led_init_data *init_data) { struct led_classdev *cdev; u32 reg; int ret; - ret = of_property_read_u32(np, "reg", ®); + ret = fwnode_property_read_u32(fwnode, "reg", ®); if (ret != 0 || reg >= chip->num_leds) { - dev_err(chip->dev, "invalid 'reg' of %pOFn\n", np); + dev_err(chip->dev, "invalid 'reg' of %pfw\n", fwnode); return -EINVAL; } led->index = reg; @@ -454,7 +456,9 @@ static int ktd202x_setup_led_single(struct ktd202x *chip, struct device_node *np return devm_led_classdev_register_ext(chip->dev, &led->cdev, init_data); } -static int ktd202x_add_led(struct ktd202x *chip, struct device_node *np, unsigned int index) +static int ktd202x_add_led(struct ktd202x *chip, + struct fwnode_handle *fwnode, + unsigned int index) { struct ktd202x_led *led = &chip->leds[index]; struct led_init_data init_data = {}; @@ -463,21 +467,21 @@ static int ktd202x_add_led(struct ktd202x *chip, struct device_node *np, unsigne int ret; /* Color property is optional in single color case */ - ret = of_property_read_u32(np, "color", &color); + ret = fwnode_property_read_u32(fwnode, "color", &color); if (ret < 0 && ret != -EINVAL) { - dev_err(chip->dev, "failed to parse 'color' of %pOF\n", np); + dev_err(chip->dev, "failed to parse 'color' of %pfw\n", fwnode); return ret; } led->chip = chip; - init_data.fwnode = of_fwnode_handle(np); + init_data.fwnode = fwnode; if (color == LED_COLOR_ID_RGB) { cdev = &led->mcdev.led_cdev; - ret = ktd202x_setup_led_rgb(chip, np, led, &init_data); + ret = ktd202x_setup_led_rgb(chip, fwnode, led, &init_data); } else { cdev = &led->cdev; - ret = ktd202x_setup_led_single(chip, np, led, &init_data); + ret = ktd202x_setup_led_single(chip, fwnode, led, &init_data); } if (ret) { @@ -492,26 +496,27 @@ static int ktd202x_add_led(struct ktd202x *chip, struct device_node *np, unsigne static int ktd202x_probe_dt(struct ktd202x *chip) { - struct device_node *np = dev_of_node(chip->dev), *child; + struct fwnode_handle *child, *fwnode; + struct device *dev = chip->dev; int count; int i = 0; - chip->num_leds = (int)(unsigned long)of_device_get_match_data(chip->dev); - - count = of_get_available_child_count(np); + count = device_get_child_node_count(dev); if (!count || count > chip->num_leds) return -EINVAL; + fwnode = dev_fwnode(dev); + regmap_write(chip->regmap, KTD202X_REG_RESET_CONTROL, KTD202X_RSTR_RESET); /* Allow the device to execute the complete reset */ usleep_range(200, 300); - for_each_available_child_of_node(np, child) { + fwnode_for_each_available_child_node(fwnode, child) { int ret = ktd202x_add_led(chip, child, i); if (ret) { - of_node_put(child); + fwnode_handle_put(child); return ret; } i++; @@ -554,6 +559,8 @@ static int ktd202x_probe(struct i2c_client *client) return ret; } + chip->num_leds = (unsigned long)i2c_get_match_data(client); + chip->regulators[0].supply = "vin"; chip->regulators[1].supply = "vio"; ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(chip->regulators), chip->regulators); @@ -605,7 +612,7 @@ static void ktd202x_shutdown(struct i2c_client *client) static const struct of_device_id ktd202x_match_table[] = { { .compatible = "kinetic,ktd2026", .data = (void *)KTD2026_NUM_LEDS }, { .compatible = "kinetic,ktd2027", .data = (void *)KTD2027_NUM_LEDS }, - {}, + {} }; MODULE_DEVICE_TABLE(of, ktd202x_match_table); @@ -616,7 +623,7 @@ static struct i2c_driver ktd202x_driver = { }, .probe = ktd202x_probe, .remove = ktd202x_remove, - .shutdown = ktd202x_shutdown, + .shutdown = ktd202x_shutdown }; module_i2c_driver(ktd202x_driver);