From patchwork Sun May 24 05:05:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Syed Nayyar Waris X-Patchwork-Id: 1296810 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=IohXGaSg; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49V7V80fnLz9sSF for ; Sun, 24 May 2020 15:06:08 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726129AbgEXFGH (ORCPT ); Sun, 24 May 2020 01:06:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45696 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725805AbgEXFGG (ORCPT ); Sun, 24 May 2020 01:06:06 -0400 Received: from mail-pj1-x1041.google.com (mail-pj1-x1041.google.com [IPv6:2607:f8b0:4864:20::1041]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E4738C061A0E; Sat, 23 May 2020 22:06:05 -0700 (PDT) Received: by mail-pj1-x1041.google.com with SMTP id l73so3104593pjb.1; Sat, 23 May 2020 22:06:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=N37O+pr53y/nXNB0kPDxzL7CBkwWMjKmCQt99s9fxR4=; b=IohXGaSgUmcuMILfqS0tqSOtNc8JXbAmNZhFX7NjPxP9mKU+RqpewoeEe5w3kMj0sp mzPzeyix1AN9FClMFrjEEnIT07qELaXfihqFbjjikcYK71Me59+MsoANbwb/mMAdFk28 P9+ChpwSwMyi37TC9Ai+J8WCBoJgRpanZlAJzuULz+uRZ2fVChPYcA71pktommDCbh/E 0KejFOcie3ulDzyPJAsE92KXqHEKVMI3rLN72rZci2EQdKBG6olBp0rLEG2esEYbdCCk 3Rb6MJpJ5xVxkUrT7hIeJQ/W7GZ5p2+vZGTuJik7C4eXXAopJ5+s5ZZWu/X6VXAej2Yz kkgw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=N37O+pr53y/nXNB0kPDxzL7CBkwWMjKmCQt99s9fxR4=; b=TlZg8r2GvyoCzLGhqhXNL5CZOKGOQF3lhPmiPE8iXxw93EJ0lpHpQJIdtJ0GZnD+aY u/2WUE3q2kXywmiWBLldYgeDHeN233VxWSJAs+/x+fLgYddLJFsKvqUjqAaiwSyh/3bj vNKFa35v355Yt+RPO0QwMWwQ+Q36sw2utACYIhQU9+E9n3WGPoxRKWQ2l3EfEi4agipL hciIYfqsDs41IKpwkoEc+KC7BA7l0oh/FDFHpTHMYAmme00aVpaO4cLcWWbUi7DFJmVz er4INICuapmF8XC3Fh89ZwQajpXd29vVbW/DnTHQKeuqmNfKRfKcVKvm5zKPx6atK0+B 2+IA== X-Gm-Message-State: AOAM5317Nykwn5bHup8apKscCrdkjZY5obySv0PRhPq0K7+3OIaq6Yfa lJLtgNr8TEwR1oKXrcen/ww= X-Google-Smtp-Source: ABdhPJw6IKQUTeAS9sK90M6zkd49MXkYklNowk7FXCzXAeaj2CVUG++2r/tA1zCiOAUM5QrDiSq78w== X-Received: by 2002:a17:90a:17e1:: with SMTP id q88mr466750pja.187.1590296765560; Sat, 23 May 2020 22:06:05 -0700 (PDT) Received: from syed ([106.223.122.111]) by smtp.gmail.com with ESMTPSA id gv4sm9953015pjb.6.2020.05.23.22.06.01 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 23 May 2020 22:06:05 -0700 (PDT) Date: Sun, 24 May 2020 10:35:49 +0530 From: Syed Nayyar Waris To: linus.walleij@linaro.org, akpm@linux-foundation.org Cc: andriy.shevchenko@linux.intel.com, vilhelm.gray@gmail.com, rrichter@marvell.com, bgolaszewski@baylibre.com, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v7 3/4] gpio: thunderx: Utilize for_each_set_clump macro Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org This patch reimplements the thunderx_gpio_set_multiple function in drivers/gpio/gpio-thunderx.c to use the new for_each_set_clump macro. Instead of looping for each bank in thunderx_gpio_set_multiple function, now we can skip bank which is not set and save cycles. Cc: Robert Richter Cc: Bartosz Golaszewski Signed-off-by: Syed Nayyar Waris Signed-off-by: William Breathitt Gray --- Changes in v7: - No change. Changes in v6: - No change. Changes in v5: - No change. Changes in v4: - Minor change: Inline value '64' in code for better code readability. Changes in v3: - Change datatype of some variables from u64 to unsigned long in function thunderx_gpio_set_multiple. Changes in v2: - No change. drivers/gpio/gpio-thunderx.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/gpio/gpio-thunderx.c b/drivers/gpio/gpio-thunderx.c index 9f66deab46ea..58c9bb25a377 100644 --- a/drivers/gpio/gpio-thunderx.c +++ b/drivers/gpio/gpio-thunderx.c @@ -275,12 +275,15 @@ static void thunderx_gpio_set_multiple(struct gpio_chip *chip, unsigned long *bits) { int bank; - u64 set_bits, clear_bits; + unsigned long set_bits, clear_bits, gpio_mask; + unsigned long offset; + struct thunderx_gpio *txgpio = gpiochip_get_data(chip); - for (bank = 0; bank <= chip->ngpio / 64; bank++) { - set_bits = bits[bank] & mask[bank]; - clear_bits = ~bits[bank] & mask[bank]; + for_each_set_clump(offset, gpio_mask, mask, chip->ngpio, 64) { + bank = offset / 64; + set_bits = bits[bank] & gpio_mask; + clear_bits = ~bits[bank] & gpio_mask; writeq(set_bits, txgpio->register_base + (bank * GPIO_2ND_BANK) + GPIO_TX_SET); writeq(clear_bits, txgpio->register_base + (bank * GPIO_2ND_BANK) + GPIO_TX_CLR); }