From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 BFBC01B9AC7; Thu, 20 Jun 2024 20:15:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718914514; cv=none; b=cq+Y4XTgzkx7/lfMPb0lnMQhHhKT+CcVrr9BtLR0SiR7DLMt+eFZyDI4MGsvoX/RON/hlvhWV9iMtrWlmvTADJYVxrEmaI7TK+Mw8kGwPOU5sK5XmnJzwGESpRUi8gZOCJalElQMTpJsTyYWDHY7D7FHvL8QJfuK5DJsHwZ//4s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718914514; c=relaxed/simple; bh=dx88qbfA3v0QDgtBAfkX2p+KZ894xqWOi1spAiEK79Q=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Af1zBzOILsRT342BYc8pOqu58eZzLRPucJ2hy4qpUAjwBgLyg+Q152fSU1v+SeVVGp/anlP8bErqF5pRaxb7By4Z8Dl0SOPLUlBYguzLA8RSDELdMUyyWLFny044WCNEgm/u6asLO7AK3iA0xEODUST4kdNLDq6pjF8JE58bQ4s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=K3Q5hlmF; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="K3Q5hlmF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D3088C2BD10; Thu, 20 Jun 2024 20:15:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1718914513; bh=dx88qbfA3v0QDgtBAfkX2p+KZ894xqWOi1spAiEK79Q=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=K3Q5hlmFTV2StGeAqV1ad3ALvO+at6HlmCfy/QXw80XBHI+CtCSJkAB6T0ljm1Cla h1FXTkMlJVy3YH8tdyanjrUGrMb+VoRevwm6fnqvKUM57OyG/H15yfbdSIVTdZCLh3 37/vSJq/jpQHMF3G47KlhSq+OSUt8sc0+DmRekUGL9Bje93H8KLMY/PBtbK1Sh5Uks mrnDLEAMdFXzxRAKsxZtF13sVSaXwSWqY3ZjjuVcQ0QzyFwy2lQCNQLs4U6Y5wLWZ6 YcyobmsG93CE3GImMYQqPd3ezOFin5JLavDjJQF6mCPAWzDHNK11PoA1fh2iITVrMb s0XuW0DNn177w== Message-ID: Date: Thu, 20 Jun 2024 22:14:59 +0200 Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 16/23] leds: max77705: Add LEDs support To: Dzmitry Sankouski , Sebastian Reichel , Bjorn Andersson , Michael Turquette , Stephen Boyd , Neil Armstrong , Jessica Zhang , Sam Ravnborg , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lee Jones , Dmitry Torokhov , Pavel Machek , Liam Girdwood , Mark Brown , =?UTF-8?Q?Uwe_Kleine-K=C3=B6nig?= , Konrad Dybcio , Chanwoo Choi , phone-devel@vger.kernel.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-input@vger.kernel.org, linux-leds@vger.kernel.org, linux-pwm@vger.kernel.org, linux-samsung-soc@vger.kernel.org References: <20240618-starqltechn_integration_upstream-v3-0-e3f6662017ac@gmail.com> <20240618-starqltechn_integration_upstream-v3-16-e3f6662017ac@gmail.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 18/06/2024 15:59, Dzmitry Sankouski wrote: > This adds basic support for LEDs for the max77705 PMIC. > > Signed-off-by: Dzmitry Sankouski > --- > MAINTAINERS | 1 + > drivers/leds/Kconfig | 6 ++ > drivers/leds/Makefile | 1 + > drivers/leds/leds-max77705.c | 166 +++++++++++++++++++++++++++++++++++++++++++ > 4 files changed, 174 insertions(+) > > diff --git a/MAINTAINERS b/MAINTAINERS > index f66f08825db9..f3c245d432d9 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -13691,6 +13691,7 @@ F: drivers/*/max14577*.c > F: drivers/*/max77686*.c > F: drivers/*/max77693*.c > F: drivers/*/max77705*.c > +F: drivers/leds/leds-max77705.c > F: drivers/clk/clk-max77686.c > F: drivers/extcon/extcon-max14577.c > F: drivers/extcon/extcon-max77693.c > diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig > index 05e6af88b88c..14d483011308 100644 > --- a/drivers/leds/Kconfig > +++ b/drivers/leds/Kconfig > @@ -728,6 +728,12 @@ config LEDS_MAX77650 > help > LEDs driver for MAX77650 family of PMICs from Maxim Integrated. > > +config LEDS_MAX77705 > + tristate "LED support for Maxim MAX77705 RGB" > + depends on MFD_MAX77705 && LEDS_CLASS && I2C > + help > + LED driver for MAX77705 MFD chip from Maxim Integrated. > + > config LEDS_MAX8997 > tristate "LED support for MAX8997 PMIC" > depends on LEDS_CLASS && MFD_MAX8997 > diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile > index effdfc6f1e95..be064e3d678e 100644 > --- a/drivers/leds/Makefile > +++ b/drivers/leds/Makefile > @@ -58,6 +58,7 @@ obj-$(CONFIG_LEDS_LP8860) += leds-lp8860.o > obj-$(CONFIG_LEDS_LT3593) += leds-lt3593.o > obj-$(CONFIG_LEDS_MAX5970) += leds-max5970.o > obj-$(CONFIG_LEDS_MAX77650) += leds-max77650.o > +obj-$(CONFIG_LEDS_MAX77705) += leds-max77705.o > obj-$(CONFIG_LEDS_MAX8997) += leds-max8997.o > obj-$(CONFIG_LEDS_MC13783) += leds-mc13783.o > obj-$(CONFIG_LEDS_MENF21BMC) += leds-menf21bmc.o > diff --git a/drivers/leds/leds-max77705.c b/drivers/leds/leds-max77705.c > new file mode 100644 > index 000000000000..f91c0e41056c > --- /dev/null > +++ b/drivers/leds/leds-max77705.c > @@ -0,0 +1,166 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Based on leds-max77650 driver: > + * Copyright (C) 2018 BayLibre SAS > + * Author: Bartosz Golaszewski > + * > + * LED driver for MAXIM 77705 MFD. > + * Copyright (C) 2024 Dzmitry Sankouski > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > + > +#define MAX77705_LED_NUM_LEDS 4 > +#define MAX77705_LED_EN_MASK GENMASK(1, 0) > +#define MAX77705_LED_MAX_BRIGHTNESS 0xff > + > +#define LEDBLNK_ON(time) ((time < 100) ? 0 : \ > + (time < 500) ? time/100-1 : \ > + (time < 3250) ? (time-500)/250+4 : 15) > + > +#define LEDBLNK_OFF(time) ((time < 1) ? 0x00 : \ > + (time < 500) ? 0x01 : \ > + (time < 5000) ? time/500 : \ > + (time < 8000) ? (time-5000)/1000+10 : \ > + (time < 12000) ? (time-8000)/2000+13 : 15) Make both static functions, if really needed, but these appear only in one place, so maybe just code it directly. > + > +struct max77705_led { > + struct led_classdev cdev; > + struct regmap *regmap; > + unsigned int en_shift; > + unsigned int reg_brightness; > + unsigned int regB; noCamelCase. > +}; > + > +static struct max77705_led *max77705_to_led(struct led_classdev *cdev) > +{ > + return container_of(cdev, struct max77705_led, cdev); > +} > + > + led = &leds[reg]; > + led->regmap = map; > + led->reg_brightness = MAX77705_RGBLED_REG_LED0BRT + reg; > + led->en_shift = 2 * reg; > + led->cdev.brightness_set_blocking = max77705_led_brightness_set; > + led->cdev.blink_set = max77705_rgb_blink; > + led->cdev.max_brightness = MAX77705_LED_MAX_BRIGHTNESS; > + > + init_data.fwnode = child; > + init_data.devicename = "max77705"; > + /* for backwards compatibility if `label` is not present */ > + init_data.default_label = ":"; There is no backwards compatibility - it's fresh driver. > + > + rv = devm_led_classdev_register_ext(dev, &led->cdev, > + &init_data); > + if (rv) > + goto err_node_put; > + > + rv = max77705_led_brightness_set(&led->cdev, LED_OFF); > + if (rv) > + goto err_node_put; > + } > + > + return 0; > +err_node_put: > + fwnode_handle_put(child); > + return rv; > +} > + > +static const struct of_device_id max77705_led_of_match[] = { > + { .compatible = "maxim,max77705-led" }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, max77705_led_of_match); > + > +static struct platform_driver max77705_led_driver = { > + .driver = { > + .name = "max77705-led", > + .of_match_table = max77705_led_of_match, > + }, > + .probe = max77705_led_probe, > +}; > +module_platform_driver(max77705_led_driver); > + > +MODULE_DESCRIPTION("MAXIM 77705 LED driver"); > +MODULE_AUTHOR("Bartosz Golaszewski "); > +MODULE_AUTHOR("Dzmitry Sankouski "); > +MODULE_LICENSE("GPL"); > +MODULE_ALIAS("platform:max77705-led"); You should not need MODULE_ALIAS() in normal cases. If you need it, usually it means your device ID table is wrong (e.g. misses either entries or MODULE_DEVICE_TABLE()). MODULE_ALIAS() is not a substitute for incomplete ID table. Best regards, Krzysztof