diff mbox series

[RFC,1/9] apple-gmux: use cpu_to_be32 instead of manual reorder

Message ID 20230210044826.9834-2-orlandoch.dev@gmail.com (mailing list archive)
State New, archived
Headers show
Series apple-gmux: support MMIO gmux type on T2 Macs | expand

Commit Message

Orlando Chamberlain Feb. 10, 2023, 4:48 a.m. UTC 
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(-)
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Patch

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);