From patchwork Mon Mar 25 06:06:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William Breathitt Gray X-Patchwork-Id: 10867951 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C0270139A for ; Mon, 25 Mar 2019 06:05:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AC93928567 for ; Mon, 25 Mar 2019 06:05:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9D848291DA; Mon, 25 Mar 2019 06:05:56 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7E18F28567 for ; Mon, 25 Mar 2019 06:05:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729633AbfCYGFy (ORCPT ); Mon, 25 Mar 2019 02:05:54 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:44248 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729373AbfCYGFy (ORCPT ); Mon, 25 Mar 2019 02:05:54 -0400 Received: by mail-pf1-f193.google.com with SMTP id a3so5587351pff.11; Sun, 24 Mar 2019 23:05:53 -0700 (PDT) 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 :mime-version:content-transfer-encoding; bh=p6jZFM4uKZmmd8N/chkful+ZD8FsiAd/9uwJICIJ0zk=; b=jqumGuL+igo/SkIi2aID93fjdQzDHtjSSvtucpTKc92SzXwZT4k5G+kymX27UTh541 d0B+WYVS4FKTQFfwoolGxbR8dwqIp+3BE/22l0q2wEDoOxsBxqqae8QyqJycRidrZWI0 ACclu19uKMz4gcTlU873cG9+xs1K+5DGzeLcxzYRRwbxkiXAnZ1Lq/KZMdGvRkG4cNJN hwGvJWSx6fTXA39+0VSWWwTmjUnRT4s/NU3g4i/tfiLCQiOb99NVKOA1mvnwRHS+PjyG C0I1Kg8eizZA/SJrgWlrKs68LwenOWrg7n1bS87ydxx0jrwZZnNZmYX1YwHxV6xwzLp1 75tQ== 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:mime-version:content-transfer-encoding; bh=p6jZFM4uKZmmd8N/chkful+ZD8FsiAd/9uwJICIJ0zk=; b=KK2A27C79S+o6plLBXlSYhLmoyNWcZnJEXCSEclWQe4J28AYetjfNZBBjjO+aGT88v dmjK6Vd3zYX2R5HzMaxSFHOgcNnbTkEsutg3RHUN/7/jR0W5PUG1gwseltEpD9xzGKSA qzg+cI/U0iT17ULnwNzi1DmOecEUJTH7qX4Hdc6VeHlIZxmKf8uW1g3fJ0Nh/n2MbzxO k0nu54hKZ6pMhQD5Ga2WuuqX3Tia04gjFd++7f9FpunYqGOjz9nrtYdRv2ka2BlHkD7j OABmhSqhqG8coaSzHSLws3yXukF0UBWzQGVRkHUYQc5SSvO5adnklDVGB76tgJjdaeZz DZMw== X-Gm-Message-State: APjAAAU8uoMPHc/m36M2uSRwAoUgS0RLOWY1QYSNkJRp0Pp5flsDMopK 73WazdJAyBZEJjafG9IFFn8= X-Google-Smtp-Source: APXvYqwDxykQkjuOKa1oZBlXM1NHkyoBvXV+7ZgKvU3Rmy/U4UOsNXSh3i4l6XjRsDUy5ImRcJfMow== X-Received: by 2002:a17:902:282b:: with SMTP id e40mr23266401plb.111.1553493953557; Sun, 24 Mar 2019 23:05:53 -0700 (PDT) Received: from localhost.localdomain ([2001:268:c0a5:e068:c70:4af9:86e2:2]) by smtp.gmail.com with ESMTPSA id k22sm20299064pfi.90.2019.03.24.23.05.46 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 24 Mar 2019 23:05:53 -0700 (PDT) From: William Breathitt Gray To: linus.walleij@linaro.org, bgolaszewski@baylibre.com Cc: akpm@linux-foundation.org, linux-gpio@vger.kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, andriy.shevchenko@linux.intel.com, linux@rasmusvillemoes.dk, yamada.masahiro@socionext.com, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, geert@linux-m68k.org, preid@electromag.com.au, William Breathitt Gray , Geert Uytterhoeven Subject: [PATCH v11 11/11] gpio: 74x164: Utilize the for_each_set_clump8 macro Date: Mon, 25 Mar 2019 15:06:47 +0900 Message-Id: <8a2e010aa62e00e1fd56802d6c842ae972d2f283.1553492741.git.vilhelm.gray@gmail.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: References: MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Replace verbose implementation in set_multiple callback with for_each_set_clump8 macro to simplify code and improve clarity. Suggested-by: Andy Shevchenko Cc: Geert Uytterhoeven Cc: Phil Reid Signed-off-by: William Breathitt Gray --- drivers/gpio/gpio-74x164.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/gpio/gpio-74x164.c b/drivers/gpio/gpio-74x164.c index fb7b620763a2..e43a6de3b6eb 100644 --- a/drivers/gpio/gpio-74x164.c +++ b/drivers/gpio/gpio-74x164.c @@ -9,6 +9,7 @@ * published by the Free Software Foundation. */ +#include #include #include #include @@ -75,20 +76,19 @@ static void gen_74x164_set_multiple(struct gpio_chip *gc, unsigned long *mask, unsigned long *bits) { struct gen_74x164_chip *chip = gpiochip_get_data(gc); - unsigned int i, idx, shift; - u8 bank, bankmask; + unsigned int offset; + unsigned long bankmask; + const unsigned int ngpio = chip->registers * 8; + size_t bank; + unsigned int bitmask; mutex_lock(&chip->lock); - for (i = 0, bank = chip->registers - 1; i < chip->registers; - i++, bank--) { - idx = i / sizeof(*mask); - shift = i % sizeof(*mask) * BITS_PER_BYTE; - bankmask = mask[idx] >> shift; - if (!bankmask) - continue; + for_each_set_clump8(offset, bankmask, mask, ngpio) { + bank = (chip->registers - 1) - (offset / 8); + bitmask = bitmap_get_value8(bits, ngpio, offset) & bankmask; chip->buffer[bank] &= ~bankmask; - chip->buffer[bank] |= bankmask & (bits[idx] >> shift); + chip->buffer[bank] |= bitmask; } __gen_74x164_write_config(chip); mutex_unlock(&chip->lock);