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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>,
	"Christian König" <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>,
	"Amadeusz Sławiński" <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	[thread overview]
Message-ID: <20230210044826.9834-2-orlandoch.dev@gmail.com> (raw)
In-Reply-To: <20230210044826.9834-1-orlandoch.dev@gmail.com>

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


  reply	other threads:[~2023-02-10  4:50 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-10  4:48 [RFC PATCH 0/9] apple-gmux: support MMIO gmux type on T2 Macs Orlando Chamberlain
2023-02-10  4:48 ` Orlando Chamberlain [this message]
2023-02-10 19:09   ` [RFC PATCH 1/9] apple-gmux: use cpu_to_be32 instead of manual reorder Hans de Goede
2023-02-10 19:19     ` Hans de Goede
2023-02-10 23:30       ` Orlando Chamberlain
2023-02-11 11:27         ` Hans de Goede
2023-02-10 19:33     ` Hans de Goede
2023-02-10 22:52       ` David Laight
2023-02-10  4:48 ` [RFC PATCH 2/9] apple-gmux: consolidate version reading Orlando Chamberlain
2023-02-10 19:41   ` Hans de Goede
2023-02-10 23:36     ` Orlando Chamberlain
2023-02-10  4:48 ` [RFC PATCH 3/9] apple-gmux: use first bit to check switch state Orlando Chamberlain
2023-02-10  4:48 ` [RFC PATCH 4/9] apple-gmux: refactor gmux types Orlando Chamberlain
2023-02-10  4:48 ` [RFC PATCH 5/9] apple-gmux: Use GMSP acpi method for interrupt clear Orlando Chamberlain
2023-02-10 19:43   ` Hans de Goede
2023-02-10 23:40     ` Orlando Chamberlain
2023-02-10  4:48 ` [RFC PATCH 6/9] apple-gmux: support MMIO gmux on T2 Macs Orlando Chamberlain
2023-02-10  4:48 ` [RFC PATCH 7/9] apple-gmux: add sysfs interface Orlando Chamberlain
2023-02-10 20:15   ` Hans de Goede
2023-02-10 20:23     ` Hans de Goede
2023-02-10 23:44       ` Orlando Chamberlain
2023-02-10  4:48 ` [RFC PATCH 8/9] hda/hdmi: Register with vga_switcheroo on Dual GPU Macbooks Orlando Chamberlain
2023-02-10  4:48 ` [RFC PATCH 9/9] drm/amdgpu: register a vga_switcheroo client for all GPUs that are not thunderbolt attached Orlando Chamberlain
2023-02-10 15:53   ` Alex Deucher
2023-02-10 16:07     ` Hans de Goede
2023-02-10 16:37       ` Alex Deucher
2023-02-10 23:54         ` Orlando Chamberlain
2023-02-10 16:30 ` [RFC PATCH 0/9] apple-gmux: support MMIO gmux type on T2 Macs Alex Deucher

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