linux-kernel - Re: [PATCH v6 1/9] rtc: at91sam9: remove references to mach specific headers

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Date:	Tue, 23 Sep 2014 10:13:59 +0200
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	Boris BREZILLON <boris.brezillon@...e-electrons.com>,
	"Jean-Christophe Plagniol-Villard" <plagnioj@...osoft.com>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Andrew Victor <linux@...im.org.za>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	<rtc-linux@...glegroups.com>,
	"Samuel Ortiz" <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>,
	Johan Hovold <jhovold@...il.com>
CC:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	"Mark Rutland" <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	<devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 1/9] rtc: at91sam9: remove references to mach specific
 headers

On 22/09/2014 17:42, Boris BREZILLON :
> In order to support multi platform kernel drivers should not include
> machine specific headers.
> Copy RTT macros in the driver code and remove any machine specific
> headers.
> 
> Signed-off-by: Boris BREZILLON <boris.brezillon@...e-electrons.com>
> Acked-by: Alexandre Belloni <alexandre.belloni@...e-electrons.com>

Acked-by: Nicolas Ferre <nicolas.ferre@...el.com>

> ---
>  drivers/rtc/rtc-at91sam9.c | 22 ++++++++++++++++++----
>  1 file changed, 18 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
> index 5963743..51f0038 100644
> --- a/drivers/rtc/rtc-at91sam9.c
> +++ b/drivers/rtc/rtc-at91sam9.c
> @@ -22,10 +22,6 @@
>  #include <linux/platform_data/atmel.h>
>  #include <linux/io.h>
>  
> -#include <mach/at91_rtt.h>
> -#include <mach/cpu.h>
> -#include <mach/hardware.h>
> -
>  /*
>   * This driver uses two configurable hardware resources that live in the
>   * AT91SAM9 backup power domain (intended to be powered at all times)
> @@ -47,6 +43,24 @@
>   * registers available, likewise usable for more than "RTC" support.
>   */
>  
> +#define AT91_RTT_MR		0x00			/* Real-time Mode Register */
> +#define AT91_RTT_RTPRES		(0xffff << 0)		/* Real-time Timer Prescaler Value */
> +#define AT91_RTT_ALMIEN		(1 << 16)		/* Alarm Interrupt Enable */
> +#define AT91_RTT_RTTINCIEN	(1 << 17)		/* Real Time Timer Increment Interrupt Enable */
> +#define AT91_RTT_RTTRST		(1 << 18)		/* Real Time Timer Restart */
> +
> +#define AT91_RTT_AR		0x04			/* Real-time Alarm Register */
> +#define AT91_RTT_ALMV		(0xffffffff)		/* Alarm Value */
> +
> +#define AT91_RTT_VR		0x08			/* Real-time Value Register */
> +#define AT91_RTT_CRTV		(0xffffffff)		/* Current Real-time Value */
> +
> +#define AT91_RTT_SR		0x0c			/* Real-time Status Register */
> +#define AT91_RTT_ALMS		(1 << 0)		/* Real-time Alarm Status */
> +#define AT91_RTT_RTTINC		(1 << 1)		/* Real-time Timer Increment */
> +
> +#define AT91_SLOW_CLOCK		32768
> +
>  /*
>   * We store ALARM_DISABLED in ALMV to record that no alarm is set.
>   * It's also the reset value for that field.
> 


-- 
Nicolas Ferre
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