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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0A5C5C3DA7F for ; Sat, 10 Aug 2024 11:35:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=6+VV4eT66CctO1KZGxFGgwlda/ITgdQ17s3an3ZALWY=; b=Uy877O4bCXdf4szr6o/XhOSzD6 aNLde73nTkhtgNrvsWAVR6itaZQM9CeT88JnnDtwI8/DcJG61+Ty+5kfkKOyuEx5XA8V1WTufSM9V 5yEl8yhI37HKk80pqnwJGZBxu3+OMiJ18Fq6zohhyG/VBhW6F4fKGOv8x5DLyp2T9gyRwE37hRYk1 olny05/69RY6CF1cx6ua/1Z5Vn5hPWNBIBKrOlvkURlVzDVMHSZeC6yCvucqIvMYzIFQsLsVFESRa yQfxxcWlflXt6HXn/FdsHQeojK6mQ4S7btO4x7eizNDcrafqHZZKe/6vQTnnd/Cy8FSZZUI3xKb0E YDDXpdgg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sckNC-0000000E4i3-3IKa; Sat, 10 Aug 2024 11:35:02 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sckMc-0000000E4fs-0Pgp for linux-arm-kernel@lists.infradead.org; Sat, 10 Aug 2024 11:34:27 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 3B0FD60B32; Sat, 10 Aug 2024 11:34:24 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 59A11C32781; Sat, 10 Aug 2024 11:34:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1723289663; bh=JJ/+mmEM+8xbPzM21IrIBeyxA2AgTYGqFaQ5w0B64fg=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=HhMHYN0uQ9U9KjtTzSGJCZ40lqRZ27WCmrPA4Co1HHqPI46MoQ2poZ9vaPwCaY3UF pBsHLQCJyog2SqzzrGmxZgB5ZoRWjdqiPMs9SFpZOzkXM2RzHrMo0D0nzdGn9KD3DP ou4Gx5bwFzUDY+ILY1tnJ5iCHeOIVTlPtGcofWKn/YmAUH/fsGyCiqKz8YKFcM8UwA ojy7P7zCDPYE5L2m6I4AqVENJjVibFORZS8BhUACaOJ5T/bhiWR6c4EKv88d0kg0xN sHsM5xkcYat8JjJ75te7UtTSII2dPQ+jM8Si3QKiaZZOvqKaE6qTJHkqsWozB5F3sa sjcL65vpBTZdQ== Message-ID: <1f8905b0-aff6-4932-b936-191aa5529f0e@kernel.org> Date: Sat, 10 Aug 2024 13:34:18 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] pwm: airoha: Add support for EN7581 SoC To: Lorenzo Bianconi , linux-pwm@vger.kernel.org Cc: ukleinek@kernel.org, lorenzo.bianconi83@gmail.com, krzk+dt@kernel.org, robh@kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, upstream@airoha.com, angelogioacchino.delregno@collabora.com, benjamin.larsson@genexis.eu, conor+dt@kernel.org, ansuelsmth@gmail.com References: From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240810_043426_309633_E319DEEE X-CRM114-Status: GOOD ( 17.97 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 10/08/2024 06:48, Lorenzo Bianconi wrote: > From: Benjamin Larsson > > Introduce driver for PWM module available on EN7581 SoC. > > Signed-off-by: Benjamin Larsson > Co-developed-by: Lorenzo Bianconi > Signed-off-by: Lorenzo Bianconi > --- ... > + > +static void airoha_pwm_config_flash_map(struct airoha_pwm *pc, > + unsigned int hwpwm, int index) > +{ > + u32 addr, mask, val; > + > + if (hwpwm < PWM_NUM_GPIO) { > + addr = REG_GPIO_FLASH_MAP(hwpwm / 8); > + } else { > + addr = REG_SIPO_FLASH_MAP(hwpwm / 8); > + hwpwm -= PWM_NUM_GPIO; > + } > + > + if (index < 0) { > + /* Change of waveform takes effect immediately but This and other comments should be not netdev-style but general Linux style. > + * disabling has some delay so to prevent glitching > + * only the enable bit is touched when disabling > + */ > + airoha_pwm_flash_clear(pc, addr, GPIO_FLASH_EN(hwpwm % 8)); > + return; ... > + > +static const struct of_device_id airoha_pwm_of_match[] = { > + { .compatible = "airoha,en7581-pwm" }, > + { /* sentinel */ } > +}; > +MODULE_DEVICE_TABLE(of, airoha_pwm_of_match); > + > +static struct platform_driver airoha_pwm_driver = { > + .driver = { > + .name = "airoha-pwm", > + .of_match_table = airoha_pwm_of_match, > + }, > + .probe = airoha_pwm_probe, > +}; > +module_platform_driver(airoha_pwm_driver); > + > +MODULE_ALIAS("platform:airoha-pwm"); 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. Especially that it does not match compatible, so you cannot use excuse module autoloading does not work for given OF node... Best regards, Krzysztof