linux-kernel - Re: [PATCH 1/4] i2c: omap: cleanup register definitions

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Date:	Fri, 21 Nov 2014 10:08:02 -0600
From:	Felipe Balbi <balbi@...com>
To:	Alexander Kochetkov <al.kochet@...il.com>
CC:	<linux-omap@...r.kernel.org>, <linux-i2c@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Wolfram Sang <wsa@...-dreams.de>,
	Tony Lindgren <tony@...mide.com>, Felipe Balbi <balbi@...com>
Subject: Re: [PATCH 1/4] i2c: omap: cleanup register definitions

On Fri, Nov 21, 2014 at 01:28:42AM +0400, Alexander Kochetkov wrote:
> Delete STAT_AD0 mask as unrelated to current IP (omap1?).
> Delete DEBUG conditional around SYSTEST masks group.
> Add SYSTEST functional mode masks for SCL and SDA.
> Add STAT_BF mask.
> 
> Signed-off-by: Alexander Kochetkov <al.kochet@...il.com>

Tested on BBB and AM437x Starter Kit

Tested-by: Felipe Balbi <balbi@...com>
Reviewed-by: Felipe Balbi <balbi@...com>

> ---
>  drivers/i2c/busses/i2c-omap.c |   10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
> index 9af7095..a021733 100644
> --- a/drivers/i2c/busses/i2c-omap.c
> +++ b/drivers/i2c/busses/i2c-omap.c
> @@ -102,7 +102,7 @@ enum {
>  #define OMAP_I2C_STAT_ROVR	(1 << 11)	/* Receive overrun */
>  #define OMAP_I2C_STAT_XUDF	(1 << 10)	/* Transmit underflow */
>  #define OMAP_I2C_STAT_AAS	(1 << 9)	/* Address as slave */
> -#define OMAP_I2C_STAT_AD0	(1 << 8)	/* Address zero */
> +#define OMAP_I2C_STAT_BF	(1 << 8)	/* Bus Free */
>  #define OMAP_I2C_STAT_XRDY	(1 << 4)	/* Transmit data ready */
>  #define OMAP_I2C_STAT_RRDY	(1 << 3)	/* Receive data ready */
>  #define OMAP_I2C_STAT_ARDY	(1 << 2)	/* Register access ready */
> @@ -150,16 +150,20 @@ enum {
>  #define OMAP_I2C_SCLH_HSSCLH	8
>  
>  /* I2C System Test Register (OMAP_I2C_SYSTEST): */
> -#ifdef DEBUG
>  #define OMAP_I2C_SYSTEST_ST_EN		(1 << 15)	/* System test enable */
>  #define OMAP_I2C_SYSTEST_FREE		(1 << 14)	/* Free running mode */
>  #define OMAP_I2C_SYSTEST_TMODE_MASK	(3 << 12)	/* Test mode select */
>  #define OMAP_I2C_SYSTEST_TMODE_SHIFT	(12)		/* Test mode select */
> +/* Functional mode */
> +#define OMAP_I2C_SYSTEST_SCL_I_FUNC	(1 << 8)	/* SCL line input value */
> +#define OMAP_I2C_SYSTEST_SCL_O_FUNC	(1 << 7)	/* SCL line output value */
> +#define OMAP_I2C_SYSTEST_SDA_I_FUNC	(1 << 6)	/* SDA line input value */
> +#define OMAP_I2C_SYSTEST_SDA_O_FUNC	(1 << 5)	/* SDA line output value */
> +/* SDA/SCL IO mode */
>  #define OMAP_I2C_SYSTEST_SCL_I		(1 << 3)	/* SCL line sense in */
>  #define OMAP_I2C_SYSTEST_SCL_O		(1 << 2)	/* SCL line drive out */
>  #define OMAP_I2C_SYSTEST_SDA_I		(1 << 1)	/* SDA line sense in */
>  #define OMAP_I2C_SYSTEST_SDA_O		(1 << 0)	/* SDA line drive out */
> -#endif
>  
>  /* OCP_SYSSTATUS bit definitions */
>  #define SYSS_RESETDONE_MASK		(1 << 0)
> -- 
> 1.7.9.5
> 

-- 
balbi

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