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=-9.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 E51D3C432C3 for ; Tue, 19 Nov 2019 15:46:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B4A20222A2 for ; Tue, 19 Nov 2019 15:46:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="bzyZfXpB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728454AbfKSPq1 (ORCPT ); Tue, 19 Nov 2019 10:46:27 -0500 Received: from mail-qt1-f193.google.com ([209.85.160.193]:46837 "EHLO mail-qt1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728414AbfKSPqX (ORCPT ); Tue, 19 Nov 2019 10:46:23 -0500 Received: by mail-qt1-f193.google.com with SMTP id r20so25033398qtp.13; Tue, 19 Nov 2019 07:46:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=w8cPO+cbNCUmwN7rgMEyGzTGM0ss35Lqs76ePxu06U8=; b=bzyZfXpBsS/nZUuOuAF0bZ1BQ2YMv6MIlX7+NRMGCxKn13/m4JieMqArZZAVF00t+L bhLwb8q+EhBG1zwBxI7IM6a1t8MgBH46cPmZth4u8iS3+hy1BF7Ii1rtamSy8Rtj2qja fOPKeXWQUtBeRE/CEvBnni0TbU7roiUf3/zHvSqOpDlyqpmqd8pYNfvMti8qzR+lMdm9 nMOwR+NK3K4CocKaYsyUGNmMND5TVVztc/DleWjnkN3XkjaEebk4A1/ACz4fMPIjvBD7 3OaxwWr5LSZEyDWB3SmW1mcBuzsvg3I0OoD2Vrnl2lygDmwTSvjB9IQkS0Rv3WTkcRdT E7lA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=w8cPO+cbNCUmwN7rgMEyGzTGM0ss35Lqs76ePxu06U8=; b=pqZF2gGTR73s2VIOdJbsna7XWZ/seRBFhBkW1GwuosFWO7W7fh7HAPsZ0GjKL5TfXN Iz7w4hJcorNUwm7agN7uHT0JpX1KcoYad/w1JzYZUK8RMcWqWbsm3uzs5I2CTm+xTgVN lVnojiBdFmDTZgBX0/S16oNvRP+b5byBiraVjJbkQYucomf6alpk21ksyP6sRlvqkLtg yshxGr2O2l1XKKRNU2J5Len2/1GKGyWHWj2/ku/cO6mf2M3/QTkw921kmkFchTaFIw+5 WYzll+XQHEArjCuIGHeDcmeWAO5SiVYNhcnzfFN1IAX57e/ZZMwcVh0H94Z68LKREa0R /oiw== X-Gm-Message-State: APjAAAU/0vhhzM7Ip+bKt5A6StVsm5/5dxqFOP+kTlozYS1H5zXNdG+K AW5xvy4AUqeRC0CobKHctmNphZ04 X-Google-Smtp-Source: APXvYqzhcoERl29keNJRMditzsNkTg1ANB7CVY8CRz0Fblrv4txNkg7Pv23PLTIf8UCsE8MtlB/N3w== X-Received: by 2002:ac8:1604:: with SMTP id p4mr34021893qtj.276.1574178381853; Tue, 19 Nov 2019 07:46:21 -0800 (PST) Received: from localhost.localdomain ([72.53.229.209]) by smtp.gmail.com with ESMTPSA id 50sm12949919qtv.88.2019.11.19.07.46.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Nov 2019 07:46:21 -0800 (PST) From: Sven Van Asbroeck X-Google-Original-From: Sven Van Asbroeck To: Lee Jones , Liam Girdwood , Mark Brown , Jacek Anaszewski , Pavel Machek , Rob Herring Cc: Linus Walleij , Grigoryev Denis , Axel Lin , Dan Murphy , Mark Rutland , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org Subject: [PATCH v2 3/4] leds: tps6105x: add driver for mfd chip led mode Date: Tue, 19 Nov 2019 10:46:10 -0500 Message-Id: <20191119154611.29625-4-TheSven73@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191119154611.29625-1-TheSven73@gmail.com> References: <20191119154611.29625-1-TheSven73@gmail.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This driver adds support for the led operational mode of the tps6105x mfd device. Example usage, devicetree: i2c0 { tps61052@33 { compatible = "ti,tps61052"; reg = <0x33>; led { label = "tps-led"; }; }; }; Example usage, platform data in machine layer: #include struct tps6105x_platform_data pdata = { .mode = TPS6105X_MODE_TORCH, .led_label = "tps-led", }; Tree: next-20191118 Signed-off-by: Sven Van Asbroeck --- drivers/leds/Kconfig | 10 +++++ drivers/leds/Makefile | 1 + drivers/leds/leds-tps6105x.c | 87 ++++++++++++++++++++++++++++++++++++ include/linux/mfd/tps6105x.h | 1 + 4 files changed, 99 insertions(+) create mode 100644 drivers/leds/leds-tps6105x.c diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 4b68520ac251..7c7ceaa824a2 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -836,6 +836,16 @@ config LEDS_LM36274 Say Y to enable the LM36274 LED driver for TI LMU devices. This supports the LED device LM36274. +config LEDS_TPS6105X + tristate "LED support for TI TPS6105X" + depends on LEDS_CLASS + depends on TPS6105X + default y if TPS6105X + help + This driver supports TPS61050/TPS61052 led chips. + It is a single boost converter primarily for white LEDs and + audio amplifiers. + comment "LED Triggers" source "drivers/leds/trigger/Kconfig" diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile index 2da39e896ce8..d7e1107753fb 100644 --- a/drivers/leds/Makefile +++ b/drivers/leds/Makefile @@ -85,6 +85,7 @@ obj-$(CONFIG_LEDS_LM3601X) += leds-lm3601x.o obj-$(CONFIG_LEDS_TI_LMU_COMMON) += leds-ti-lmu-common.o obj-$(CONFIG_LEDS_LM3697) += leds-lm3697.o obj-$(CONFIG_LEDS_LM36274) += leds-lm36274.o +obj-$(CONFIG_LEDS_TPS6105X) += leds-tps6105x.o # LED SPI Drivers obj-$(CONFIG_LEDS_CR0014114) += leds-cr0014114.o diff --git a/drivers/leds/leds-tps6105x.c b/drivers/leds/leds-tps6105x.c new file mode 100644 index 000000000000..87dbe4846df6 --- /dev/null +++ b/drivers/leds/leds-tps6105x.c @@ -0,0 +1,87 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include +#include +#include +#include +#include + +struct tps6105x_priv { + struct regmap *regmap; + struct led_classdev cdev; +}; + +static int tps6105x_brightness_set(struct led_classdev *cdev, + enum led_brightness brightness) +{ + struct tps6105x_priv *priv = container_of(cdev, struct tps6105x_priv, + cdev); + + return regmap_update_bits(priv->regmap, TPS6105X_REG_0, + TPS6105X_REG0_TORCHC_MASK, + brightness << TPS6105X_REG0_TORCHC_SHIFT); +} + +static const char *label_from_dt(struct device *dev) +{ + struct device_node *led = + of_get_child_by_name(dev->parent->of_node, "led"); + const char *label; + + if (!led) { + dev_err(dev, "led node not found"); + return NULL; + } + if (of_property_read_string(led, "label", &label)) + label = NULL; + of_node_put(led); + + return label; +} + +static int tps6105x_led_probe(struct platform_device *pdev) +{ + struct tps6105x *tps6105x = dev_get_platdata(&pdev->dev); + struct tps6105x_platform_data *pdata = tps6105x->pdata; + struct tps6105x_priv *priv; + const char *label; + int ret; + + /* This instance is not set for torch mode so bail out */ + if (pdata->mode != TPS6105X_MODE_TORCH) { + dev_info(&pdev->dev, + "chip not in torch mode, exit probe"); + return -EINVAL; + } + + label = pdata->led_label ?: label_from_dt(&pdev->dev); + label = label ?: "tps6105x"; + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + priv->regmap = tps6105x->regmap; + priv->cdev.name = label; + priv->cdev.brightness_set_blocking = tps6105x_brightness_set; + priv->cdev.max_brightness = 7; + + ret = regmap_update_bits(tps6105x->regmap, TPS6105X_REG_0, + TPS6105X_REG0_MODE_MASK | TPS6105X_REG0_TORCHC_MASK, + TPS6105X_REG0_MODE_TORCH << TPS6105X_REG0_MODE_SHIFT); + if (ret) + return ret; + + return devm_led_classdev_register(&pdev->dev, &priv->cdev); +} + +static struct platform_driver led_driver = { + .probe = tps6105x_led_probe, + .driver = { + .name = "tps6105x-leds", + }, +}; + +module_platform_driver(led_driver); + +MODULE_DESCRIPTION("TPS6105x led driver"); +MODULE_AUTHOR("Sven Van Asbroeck "); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/tps6105x.h b/include/linux/mfd/tps6105x.h index b1313411ef09..287a67e004f8 100644 --- a/include/linux/mfd/tps6105x.h +++ b/include/linux/mfd/tps6105x.h @@ -78,6 +78,7 @@ enum tps6105x_mode { struct tps6105x_platform_data { enum tps6105x_mode mode; struct regulator_init_data *regulator_data; + const char *led_label; }; /** -- 2.17.1