Thread (16 messages) 16 messages, 5 authors, 2024-09-10

Re: [PATCH v4 1/3] tty: serial: samsung: Use BIT() macro for APPLE_S5L_*

From: Nick Chan <hidden>
Date: 2024-09-10 14:26:48
Also in: asahi, linux-samsung-soc, linux-serial, lkml


On 10/9/2024 20:48, Andi Shyti wrote:
Hi Nick,

On Mon, Sep 09, 2024 at 04:37:25PM GMT, Nick Chan wrote:
quoted
New entries using BIT() will be added soon, so change the existing ones
for consistency.

Signed-off-by: Nick Chan <redacted>
I think this is:

Suggested-by: Krzysztof Kozlowski <krzk@kernel.org>
We will see... Got a bit paranoid after bad things happened with v2 and v3.
quoted
---
 include/linux/serial_s3c.h | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/include/linux/serial_s3c.h b/include/linux/serial_s3c.h
index 1672cf0810ef..1e8686695487 100644
--- a/include/linux/serial_s3c.h
+++ b/include/linux/serial_s3c.h
@@ -249,9 +249,9 @@
 #define APPLE_S5L_UCON_RXTO_ENA		9
 #define APPLE_S5L_UCON_RXTHRESH_ENA	12
 #define APPLE_S5L_UCON_TXTHRESH_ENA	13
-#define APPLE_S5L_UCON_RXTO_ENA_MSK	(1 << APPLE_S5L_UCON_RXTO_ENA)
-#define APPLE_S5L_UCON_RXTHRESH_ENA_MSK	(1 << APPLE_S5L_UCON_RXTHRESH_ENA)
-#define APPLE_S5L_UCON_TXTHRESH_ENA_MSK	(1 << APPLE_S5L_UCON_TXTHRESH_ENA)
+#define APPLE_S5L_UCON_RXTO_ENA_MSK	BIT(APPLE_S5L_UCON_RXTO_ENA)
+#define APPLE_S5L_UCON_RXTHRESH_ENA_MSK	BIT(APPLE_S5L_UCON_RXTHRESH_ENA)
+#define APPLE_S5L_UCON_TXTHRESH_ENA_MSK	BIT(APPLE_S5L_UCON_TXTHRESH_ENA)
 
 #define APPLE_S5L_UCON_DEFAULT		(S3C2410_UCON_TXIRQMODE | \
 					 S3C2410_UCON_RXIRQMODE | \
@@ -260,9 +260,9 @@
 					 APPLE_S5L_UCON_RXTHRESH_ENA_MSK | \
 					 APPLE_S5L_UCON_TXTHRESH_ENA_MSK)
 
-#define APPLE_S5L_UTRSTAT_RXTHRESH	(1<<4)
-#define APPLE_S5L_UTRSTAT_TXTHRESH	(1<<5)
-#define APPLE_S5L_UTRSTAT_RXTO		(1<<9)
+#define APPLE_S5L_UTRSTAT_RXTHRESH	BIT(4)
+#define APPLE_S5L_UTRSTAT_TXTHRESH	BIT(5)
+#define APPLE_S5L_UTRSTAT_RXTO		BIT(9)
 #define APPLE_S5L_UTRSTAT_ALL_FLAGS	(0x3f0)
You could make this GENMASK(0x3f, 4)
Good idea, given the above context I think I may add

Suggested-by: Andi Shyti <andi.shyti@kernel.org>

too. And actually it should be GENMASK(9, 3)
Andi
Nick Chan

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