linux-kernel - Re: [PATCH 2/4] Input: ep93xx_keypad

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Message-ID: <6b0d2338e7b8a1e1f86bd4565182377255f27729.camel@gmail.com>
Date:   Tue, 12 Oct 2021 08:58:35 +0200
From:   Alexander Sverdlin <alexander.sverdlin@...il.com>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-input@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] Input: ep93xx_keypad - use BIT() and GENMASK()
 macros

Hi!

On Mon, 2021-10-11 at 18:37 -0700, Dmitry Torokhov wrote:
> Also drop parenthesis around macros that do not use expressions as they are
> not needed.
> 
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>

Acked-by: Alexander Sverdlin <alexander.sverdlin@...il.com>

> ---
>  drivers/input/keyboard/ep93xx_keypad.c | 37 +++++++++++++-------------
>  1 file changed, 19 insertions(+), 18 deletions(-)
> 
> diff --git a/drivers/input/keyboard/ep93xx_keypad.c b/drivers/input/keyboard/ep93xx_keypad.c
> index a0c6cdf8e0d3..6be5474ba2f2 100644
> --- a/drivers/input/keyboard/ep93xx_keypad.c
> +++ b/drivers/input/keyboard/ep93xx_keypad.c
> @@ -17,6 +17,7 @@
>   * flag.
>   */
>  
> +#include <linux/bits.h>
>  #include <linux/module.h>
>  #include <linux/platform_device.h>
>  #include <linux/interrupt.h>
> @@ -35,28 +36,28 @@
>  #define KEY_REG                        0x08    /* Key Value Capture register */
>  
>  /* Key Scan Initialization Register bit defines */
> -#define KEY_INIT_DBNC_MASK     (0x00ff0000)
> -#define KEY_INIT_DBNC_SHIFT    (16)
> -#define KEY_INIT_DIS3KY                (1<<15)
> -#define KEY_INIT_DIAG          (1<<14)
> -#define KEY_INIT_BACK          (1<<13)
> -#define KEY_INIT_T2            (1<<12)
> -#define KEY_INIT_PRSCL_MASK    (0x000003ff)
> -#define KEY_INIT_PRSCL_SHIFT   (0)
> +#define KEY_INIT_DBNC_MASK     GENMASK(23, 16)
> +#define KEY_INIT_DBNC_SHIFT    16
> +#define KEY_INIT_DIS3KY                BIT(15)
> +#define KEY_INIT_DIAG          BIT(14)
> +#define KEY_INIT_BACK          BIT(13)
> +#define KEY_INIT_T2            BIT(12)
> +#define KEY_INIT_PRSCL_MASK    GENMASK(9, 0)
> +#define KEY_INIT_PRSCL_SHIFT   0
>  
>  /* Key Scan Diagnostic Register bit defines */
> -#define KEY_DIAG_MASK          (0x0000003f)
> -#define KEY_DIAG_SHIFT         (0)
> +#define KEY_DIAG_MASK          GENMASK(5, 0)
> +#define KEY_DIAG_SHIFT         0
>  
>  /* Key Value Capture Register bit defines */
> -#define KEY_REG_K              (1<<15)
> -#define KEY_REG_INT            (1<<14)
> -#define KEY_REG_2KEYS          (1<<13)
> -#define KEY_REG_1KEY           (1<<12)
> -#define KEY_REG_KEY2_MASK      (0x00000fc0)
> -#define KEY_REG_KEY2_SHIFT     (6)
> -#define KEY_REG_KEY1_MASK      (0x0000003f)
> -#define KEY_REG_KEY1_SHIFT     (0)
> +#define KEY_REG_K              BIT(15)
> +#define KEY_REG_INT            BIT(14)
> +#define KEY_REG_2KEYS          BIT(13)
> +#define KEY_REG_1KEY           BIT(12)
> +#define KEY_REG_KEY2_MASK      GENMASK(11, 6)
> +#define KEY_REG_KEY2_SHIFT     6
> +#define KEY_REG_KEY1_MASK      GENMASK(5, 0)
> +#define KEY_REG_KEY1_SHIFT     0
>  
>  #define EP93XX_MATRIX_SIZE     (EP93XX_MATRIX_ROWS * EP93XX_MATRIX_COLS)
>  

-- 
Alexander Sverdlin.