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[v3,4/8] i2c: riic: Use GENMASK() macro for bitmask definitions

Message ID 20241227115154.56154-5-prabhakar.mahadev-lad.rj@bp.renesas.com
State New
Headers show
Series i2c: riic: driver cleanup and improvements | expand

Commit Message

Prabhakar Dec. 27, 2024, 11:51 a.m. UTC 
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Replace raw bitmask values with the `GENMASK()` macro in the `i2c-riic`
driver to improve readability and maintain consistency.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
---
v2->v3
- Collected RB and tested tags

v1->v2
- Collected RB tag from Geert
---
 drivers/i2c/busses/i2c-riic.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Andy Shevchenko Dec. 28, 2024, 11:36 p.m. UTC | #1 
Fri, Dec 27, 2024 at 11:51:50AM +0000, Prabhakar kirjoitti:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> 
> Replace raw bitmask values with the `GENMASK()` macro in the `i2c-riic`
> driver to improve readability and maintain consistency.

...

> -#define ICBR_RESERVED	0xe0 /* Should be 1 on writes */
> +#define ICBR_RESERVED	GENMASK(7, 5) /* Should be 1 on writes */

I don't understand the comment. Does it mean the value should be 0x20?
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Patch

diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c
index 954e066d61a8..ddae4b74a86b 100644
--- a/drivers/i2c/busses/i2c-riic.c
+++ b/drivers/i2c/busses/i2c-riic.c
@@ -55,7 +55,7 @@ 
 #define ICCR2_RS	BIT(2)
 #define ICCR2_ST	BIT(1)
 
-#define ICMR1_CKS_MASK	0x70
+#define ICMR1_CKS_MASK	GENMASK(6, 4)
 #define ICMR1_BCWP	BIT(3)
 #define ICMR1_CKS(_x)	((((_x) << 4) & ICMR1_CKS_MASK) | ICMR1_BCWP)
 
@@ -73,7 +73,7 @@ 
 
 #define ICSR2_NACKF	BIT(4)
 
-#define ICBR_RESERVED	0xe0 /* Should be 1 on writes */
+#define ICBR_RESERVED	GENMASK(7, 5) /* Should be 1 on writes */
 
 #define RIIC_INIT_MSG	-1