netdev - Re: [PATCH net-next-2.6] can: EG20T PCH: use BIT(X)

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Message-ID: <4CE3D2D5.3030301@pengutronix.de>
Date:	Wed, 17 Nov 2010 14:04:21 +0100
From:	Marc Kleine-Budde <mkl@...gutronix.de>
To:	Tomoya MORINAGA <tomoya-linux@....okisemi.com>
CC:	Wolfgang Grandegger <wg@...ndegger.com>,
	Wolfram Sang <w.sang@...gutronix.de>,
	Christian Pellegrin <chripell@...e.org>,
	Barry Song <21cnbao@...il.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	socketcan-core@...ts.berlios.de, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"David S. Miller" <davem@...emloft.net>,
	andrew.chih.howe.khor@...el.com, qi.wang@...el.com,
	margie.foster@...el.com, yong.y.wang@...el.com,
	kok.howg.ewe@...el.com, joel.clark@...el.com
Subject: Re: [PATCH net-next-2.6] can: EG20T PCH: use BIT(X)

On 11/17/2010 01:22 PM, Tomoya MORINAGA wrote:
> Replace bit assignment value to BIT(X).
> For easy to readable/identifiable, replace all bit assigned macros to BIT(X)
> 
> Signed-off-by: Tomoya MORINAGA <tomoya-linux@....okisemi.com>

IMHO you can squash this into the "add  prefix to macro" patch.
You have my Acked-by for both solutions.

cheers, Marc

> ---
>  drivers/net/can/pch_can.c |   73 +++++++++++++++++++++++----------------------
>  1 files changed, 37 insertions(+), 36 deletions(-)
> 
> diff --git a/drivers/net/can/pch_can.c b/drivers/net/can/pch_can.c
> index c523e3d..238622a 100644
> --- a/drivers/net/can/pch_can.c
> +++ b/drivers/net/can/pch_can.c
> @@ -38,50 +38,51 @@
>  
>  #define PCH_ENABLE		1 /* The enable flag */
>  #define PCH_DISABLE		0 /* The disable flag */
> -#define PCH_CTRL_INIT		0x0001 /* The INIT bit of CANCONT register. */
> -#define PCH_CTRL_IE		0x0002 /* The IE bit of CAN control register */
> -#define PCH_CTRL_IE_SIE_EIE	0x000e
> -#define PCH_CTRL_CCE		0x0040
> -#define PCH_CTRL_OPT		0x0080 /* The OPT bit of CANCONT register. */
> -#define PCH_OPT_SILENT		0x0008 /* The Silent bit of CANOPT reg. */
> -#define PCH_OPT_LBACK		0x0010 /* The LoopBack bit of CANOPT reg. */
> +#define PCH_CTRL_INIT		BIT(0) /* The INIT bit of CANCONT register. */
> +#define PCH_CTRL_IE		BIT(1) /* The IE bit of CAN control register */
> +#define PCH_CTRL_IE_SIE_EIE	(BIT(3) | BIT(2) | BIT(1))
> +#define PCH_CTRL_CCE		BIT(6)
> +#define PCH_CTRL_OPT		BIT(7) /* The OPT bit of CANCONT register. */
> +#define PCH_OPT_SILENT		BIT(3) /* The Silent bit of CANOPT reg. */
> +#define PCH_OPT_LBACK		BIT(4) /* The LoopBack bit of CANOPT reg. */
> +
>  #define PCH_CMASK_RX_TX_SET	0x00f3
>  #define PCH_CMASK_RX_TX_GET	0x0073
>  #define PCH_CMASK_ALL		0xff
> -#define PCH_CMASK_RDWR		0x80
> -#define PCH_CMASK_ARB		0x20
> -#define PCH_CMASK_CTRL		0x10
> -#define PCH_CMASK_MASK		0x40
> -#define PCH_CMASK_NEWDAT	0x04
> -#define PCH_CMASK_CLRINTPND	0x08
> -#define PCH_IF_MCONT_NEWDAT	0x8000
> -#define PCH_IF_MCONT_INTPND	0x2000
> -#define PCH_IF_MCONT_UMASK	0x1000
> -#define PCH_IF_MCONT_TXIE	0x0800
> -#define PCH_IF_MCONT_RXIE	0x0400
> -#define PCH_IF_MCONT_RMTEN	0x0200
> -#define PCH_IF_MCONT_TXRQXT	0x0100
> -#define PCH_IF_MCONT_EOB	0x0080
> -#define PCH_IF_MCONT_DLC	0x000f
> -#define PCH_IF_MCONT_MSGLOST	0x4000
> -#define PCH_MASK2_MDIR_MXTD	0xc000
> -#define PCH_ID2_DIR		0x2000
> -#define PCH_ID2_XTD		0x4000
> -#define PCH_ID_MSGVAL		0x8000
> -#define PCH_IF_CREQ_BUSY	0x8000
> +#define PCH_CMASK_NEWDAT	BIT(2)
> +#define PCH_CMASK_CLRINTPND	BIT(3)
> +#define PCH_CMASK_CTRL		BIT(4)
> +#define PCH_CMASK_ARB		BIT(5)
> +#define PCH_CMASK_MASK		BIT(6)
> +#define PCH_CMASK_RDWR		BIT(7)
> +#define PCH_IF_MCONT_NEWDAT	BIT(15)
> +#define PCH_IF_MCONT_MSGLOST	BIT(14)
> +#define PCH_IF_MCONT_INTPND	BIT(13)
> +#define PCH_IF_MCONT_UMASK	BIT(12)
> +#define PCH_IF_MCONT_TXIE	BIT(11)
> +#define PCH_IF_MCONT_RXIE	BIT(10)
> +#define PCH_IF_MCONT_RMTEN	BIT(9)
> +#define PCH_IF_MCONT_TXRQXT	BIT(8)
> +#define PCH_IF_MCONT_EOB	BIT(7)
> +#define PCH_IF_MCONT_DLC	(BIT(0) | BIT(1) | BIT(2) | BIT(3))
> +#define PCH_MASK2_MDIR_MXTD	(BIT(14) | BIT(15))
> +#define PCH_ID2_DIR		BIT(13)
> +#define PCH_ID2_XTD		BIT(14)
> +#define PCH_ID_MSGVAL		BIT(15)
> +#define PCH_IF_CREQ_BUSY	BIT(15)
>  
>  #define PCH_STATUS_INT		0x8000
>  #define PCH_REC			0x00007f00
>  #define PCH_TEC			0x000000ff
>  
> -#define PCH_RX_OK		0x00000010
> -#define PCH_TX_OK		0x00000008
> -#define PCH_BUS_OFF		0x00000080
> -#define PCH_EWARN		0x00000040
> -#define PCH_EPASSIV		0x00000020
> -#define PCH_LEC0		0x00000001
> -#define PCH_LEC1		0x00000002
> -#define PCH_LEC2		0x00000004
> +#define PCH_TX_OK		BIT(3)
> +#define PCH_RX_OK		BIT(4)
> +#define PCH_EPASSIV		BIT(5)
> +#define PCH_EWARN		BIT(6)
> +#define PCH_BUS_OFF		BIT(7)
> +#define PCH_LEC0		BIT(0)
> +#define PCH_LEC1		BIT(1)
> +#define PCH_LEC2		BIT(2)
>  #define PCH_LEC_ALL		(PCH_LEC0 | PCH_LEC1 | PCH_LEC2)
>  #define PCH_STUF_ERR		PCH_LEC0
>  #define PCH_FORM_ERR		PCH_LEC1


-- 
Pengutronix e.K.                  | Marc Kleine-Budde           |
Industrial Linux Solutions        | Phone: +49-231-2826-924     |
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