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From: Detlev Zundel <dzu@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 2/5] atmel_lcdfb: Straighten out funky vl_sync logic
Date: Tue, 02 Sep 2008 13:44:10 +0200	[thread overview]
Message-ID: <m2myiqhiwl.fsf@ohwell.denx.de> (raw)
In-Reply-To: <1220278882-26029-2-git-send-email-haavard.skinnemoen@atmel.com> (Haavard Skinnemoen's message of "Mon, 1 Sep 2008 16:21:19 +0200")

Hi Haavard,

> If the board _didn't_ request INVLINE_INVERTED, we set INVLINE_INVERTED,
> otherwise we don't. WTF?
>
> Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
> ---
>  drivers/video/atmel_lcdfb.c |    5 +----
>  1 files changed, 1 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
> index 7f0dceb..3a51cc7 100644
> --- a/drivers/video/atmel_lcdfb.c
> +++ b/drivers/video/atmel_lcdfb.c
> @@ -107,10 +107,7 @@ void lcd_ctrl_init(void *lcdbase)
>  	if (panel_info.vl_tft)
>  		value |= ATMEL_LCDC_DISTYPE_TFT;
>  
> -	if (!(panel_info.vl_sync & ATMEL_LCDC_INVLINE_INVERTED))
> -		value |= ATMEL_LCDC_INVLINE_INVERTED;
> -	if (!(panel_info.vl_sync & ATMEL_LCDC_INVFRAME_INVERTED))
> -		value |= ATMEL_LCDC_INVFRAME_INVERTED;
> +	value |= panel_info.vl_sync;

What about

	value |= panel_info.vl_sync & (ATMEL_LCDC_INVLINE_INVERTED | ATMEL_LCDC_INVFRAME_INVERTED);

[break lines where convenient] Apart from this being the formal
equivalent to the original code, this would make it more clear what can
go in, no?

Cheers
  Detlev

-- 
["From 2.4 to 2.6 to 2.7" discussing release numbering of the Linux kernel]
Let the bike-shed-painting begin.
                                     -- Linus Torvalds 
--
DENX Software Engineering GmbH,      MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich,  Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-40 Fax: (+49)-8142-66989-80 Email: dzu at denx.de

  parent reply	other threads:[~2008-09-02 11:44 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-01 14:21 [U-Boot] [PATCH 1/5] atmel_lcdfb: Eliminate unneeded #include <asm/arch/hardware.h> Haavard Skinnemoen
2008-09-01 14:21 ` [U-Boot] [PATCH 2/5] atmel_lcdfb: Straighten out funky vl_sync logic Haavard Skinnemoen
2008-09-01 14:21   ` [U-Boot] [PATCH 3/5] lcd: Implement lcd_printf() Haavard Skinnemoen
2008-09-01 14:21     ` [U-Boot] [PATCH 4/5] lcd: Set lcd_is_enabled before clearing the screen Haavard Skinnemoen
2008-09-01 14:21       ` [U-Boot] [PATCH 5/5] lcd: Let the board code show board-specific info Haavard Skinnemoen
2008-10-25 22:23         ` Anatolij Gustschin
2008-10-26 11:56           ` Jean-Christophe PLAGNIOL-VILLARD
2008-10-27  9:19         ` Anatolij Gustschin
2008-10-25 21:47       ` [U-Boot] [PATCH 4/5] lcd: Set lcd_is_enabled before clearing the screen Anatolij Gustschin
2008-10-25 21:45     ` [U-Boot] [PATCH 3/5] lcd: Implement lcd_printf() Anatolij Gustschin
2008-10-27 23:03       ` Wolfgang Denk
2008-09-02 11:44   ` Detlev Zundel [this message]
2008-09-02 11:53     ` [U-Boot] [PATCH 2/5] atmel_lcdfb: Straighten out funky vl_sync logic Haavard Skinnemoen
2008-10-25 21:33   ` Anatolij Gustschin
2008-10-25 21:26 ` [U-Boot] [PATCH 1/5] atmel_lcdfb: Eliminate unneeded #include <asm/arch/hardware.h> Anatolij Gustschin

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