lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Thu, 22 Jan 2015 11:48:17 +0800
From:	Caesar Wang <sasukewxt@....com>
To:	Mark Yao <mark.yao@...k-chips.com>,
	David Airlie <airlied@...ux.ie>,
	Daniel Vetter <daniel@...ll.ch>,
	Rob Clark <robdclark@...il.com>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Daniel Kurtz <djkurtz@...omium.org>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	linux-rockchip@...ts.infradead.org
Subject: Re: [PATCH] drm/rockchip: vop: fix vop vsync/hsync polarity

Mark,

在 2015年01月22日 11:15, Mark Yao 写道:
> Vop set wrong vsync/hsync polarity, it may cause some
> display problem. known problem is that caused HDMI hdcp
> authenticate failed, caused pixel offset with hdmi display.
> the polarity description at RK3288 TRM doc:
>    dsp_vsync_pol
>      VSYNC polarity
>        1'b0 : negative
>        1'b1 : positive
>        dsp_hsync_pol
>      HSYNC polarity
>        1'b0 : negative
>        1'b1 : positive
>
> Signed-off-by: Mark Yao <mark.yao@...k-chips.com>
> ---
>   drivers/gpu/drm/rockchip/rockchip_drm_vop.c |    4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> index 9a5c571..2b145ba5 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> @@ -874,8 +874,8 @@ static int vop_crtc_mode_set(struct drm_crtc *crtc,
>   	VOP_CTRL_SET(vop, out_mode, vop->connector_out_mode);
>   
>   	val = 0x8;
> -	val |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ? 1 : 0;
> -	val |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ? (1 << 1) : 0;
> +	val |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ? 0 : 1;
> +	val |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ? 0 : (1 << 1);
Tested-by: Caesar Wang <wxt@...k-chips.com>
>   	VOP_CTRL_SET(vop, pin_pol, val);
>   
>   	VOP_CTRL_SET(vop, htotal_pw, (htotal << 16) | hsync_len);


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists