From:   Orlando Chamberlain <orlandoch.dev@gmail.com>
To:     platform-driver-x86@vger.kernel.org, amd-gfx@lists.freedesktop.org,
        linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org
Cc:     Alex Deucher <alexander.deucher@amd.com>,
        =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>,
        "Pan, Xinhui" <Xinhui.Pan@amd.com>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        Hans de Goede <hdegoede@redhat.com>,
        Mark Gross <markgross@kernel.org>,
        Jaroslav Kysela <perex@perex.cz>,
        Takashi Iwai <tiwai@suse.com>,
        Hawking Zhang <Hawking.Zhang@amd.com>,
        Andrey Grodzovsky <andrey.grodzovsky@amd.com>,
        Lijo Lazar <lijo.lazar@amd.com>,
        YiPeng Chai <YiPeng.Chai@amd.com>,
        Somalapuram Amaranath <Amaranath.Somalapuram@amd.com>,
        Mario Limonciello <mario.limonciello@amd.com>,
        Bokun Zhang <Bokun.Zhang@amd.com>,
        Jack Xiao <Jack.Xiao@amd.com>,
        Kai Vehmanen <kai.vehmanen@linux.intel.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
        Rander Wang <rander.wang@intel.com>,
        Ranjani Sridharan <ranjani.sridharan@linux.intel.com>,
        =?UTF-8?q?Amadeusz=20S=C5=82awi=C5=84ski?= 
        <amadeuszx.slawinski@linux.intel.com>,
        Yong Zhi <yong.zhi@intel.com>, Evan Quan <evan.quan@amd.com>,
        Kerem Karabay <kekrby@gmail.com>,
        Aditya Garg <gargaditya08@live.com>,
        Aun-Ali Zaidi <admin@kodeit.net>,
        Orlando Chamberlain <orlandoch.dev@gmail.com>
Subject: [RFC PATCH 1/9] apple-gmux: use cpu_to_be32 instead of manual reorder
Date:   Fri, 10 Feb 2023 15:48:18 +1100
Message-Id: <20230210044826.9834-2-orlandoch.dev@gmail.com>
In-Reply-To: <20230210044826.9834-1-orlandoch.dev@gmail.com>
References: <20230210044826.9834-1-orlandoch.dev@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Currently it manually flips the byte order, but we can instead use
cpu_to_be32(val) for this.

Signed-off-by: Orlando Chamberlain <orlandoch.dev@gmail.com>
---
 drivers/platform/x86/apple-gmux.c | 18 ++----------------
 1 file changed, 2 insertions(+), 16 deletions(-)

diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c
index 9333f82cfa8a..e8cb084cb81f 100644
--- a/drivers/platform/x86/apple-gmux.c
+++ b/drivers/platform/x86/apple-gmux.c
@@ -94,13 +94,7 @@ static u32 gmux_pio_read32(struct apple_gmux_data *gmux_data, int port)
 static void gmux_pio_write32(struct apple_gmux_data *gmux_data, int port,
 			     u32 val)
 {
-	int i;
-	u8 tmpval;
-
-	for (i = 0; i < 4; i++) {
-		tmpval = (val >> (i * 8)) & 0xff;
-		outb(tmpval, gmux_data->iostart + port + i);
-	}
+	outl(cpu_to_be32(val), gmux_data->iostart + port);
 }
 
 static int gmux_index_wait_ready(struct apple_gmux_data *gmux_data)
@@ -177,16 +171,8 @@ static u32 gmux_index_read32(struct apple_gmux_data *gmux_data, int port)
 static void gmux_index_write32(struct apple_gmux_data *gmux_data, int port,
 			       u32 val)
 {
-	int i;
-	u8 tmpval;
-
 	mutex_lock(&gmux_data->index_lock);
-
-	for (i = 0; i < 4; i++) {
-		tmpval = (val >> (i * 8)) & 0xff;
-		outb(tmpval, gmux_data->iostart + GMUX_PORT_VALUE + i);
-	}
-
+	outl(cpu_to_be32(val), gmux_data->iostart + GMUX_PORT_VALUE);
 	gmux_index_wait_ready(gmux_data);
 	outb(port & 0xff, gmux_data->iostart + GMUX_PORT_WRITE);
 	gmux_index_wait_complete(gmux_data);
-- 
2.39.1