From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark yao Subject: Re: [PATCH v2 22/26] drm/rockchip: vop: test for P{H,V}SYNC Date: Mon, 23 Jan 2017 15:12:05 +0800 Message-ID: <5885ACC5.5090108@rock-chips.com> References: <20170121163128.22240-1-john@metanate.com> <20170121163128.22240-23-john@metanate.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20170121163128.22240-23-john@metanate.com> Sender: linux-kernel-owner@vger.kernel.org To: John Keeping Cc: Chris Zhong , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org List-Id: linux-rockchip.vger.kernel.org On 2017年01月22日 00:31, John Keeping wrote: > When connected to the MIPI DSI output, we need to use N{H,V}SYNC for the > internal connection but these flags are meaningless for DSI panels. > Switch the test so that we do not set the P{H,V}SYNC bits unless the > mode requires it. > > Signed-off-by: John Keeping > --- > Unchanged in v2 > --- > 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 c7eba305c488..67aefc6d4e9a 100644 > --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c > @@ -933,8 +933,8 @@ static void vop_crtc_enable(struct drm_crtc *crtc) > } > > pin_pol = 0x8; > - pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ? 0 : 1; > - pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ? 0 : (1 << 1); > + pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) ? 1 : 0; > + pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) ? (1 << 1) : 0; I'm confuse that why SYNC flags have N and P on drm, they are same meaning. If no one configure display mode's flags, I don't know which one is correct, N or P? it's a problem. Does anyone can answer it? For this patch, it may effect non-sync flags mode on other connector's behavior, but seems mostly display mode has sync flags except mipi dsi connector, I think feed mipi's requirement would be better. So it's no problem on my side. Reviewed-by: Mark Yao > VOP_CTRL_SET(vop, pin_pol, pin_pol); > > switch (s->output_type) { -- Ｍark Yao From mboxrd@z Thu Jan 1 00:00:00 1970 From: mark.yao@rock-chips.com (Mark yao) Date: Mon, 23 Jan 2017 15:12:05 +0800 Subject: [PATCH v2 22/26] drm/rockchip: vop: test for P{H,V}SYNC In-Reply-To: <20170121163128.22240-23-john@metanate.com> References: <20170121163128.22240-1-john@metanate.com> <20170121163128.22240-23-john@metanate.com> Message-ID: <5885ACC5.5090108@rock-chips.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 2017?01?22? 00:31, John Keeping wrote: > When connected to the MIPI DSI output, we need to use N{H,V}SYNC for the > internal connection but these flags are meaningless for DSI panels. > Switch the test so that we do not set the P{H,V}SYNC bits unless the > mode requires it. > > Signed-off-by: John Keeping > --- > Unchanged in v2 > --- > 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 c7eba305c488..67aefc6d4e9a 100644 > --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c > +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c > @@ -933,8 +933,8 @@ static void vop_crtc_enable(struct drm_crtc *crtc) > } > > pin_pol = 0x8; > - pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ? 0 : 1; > - pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ? 0 : (1 << 1); > + pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC) ? 1 : 0; > + pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC) ? (1 << 1) : 0; I'm confuse that why SYNC flags have N and P on drm, they are same meaning. If no one configure display mode's flags, I don't know which one is correct, N or P? it's a problem. Does anyone can answer it? For this patch, it may effect non-sync flags mode on other connector's behavior, but seems mostly display mode has sync flags except mipi dsi connector, I think feed mipi's requirement would be better. So it's no problem on my side. Reviewed-by: Mark Yao > VOP_CTRL_SET(vop, pin_pol, pin_pol); > > switch (s->output_type) { -- ?ark Yao