From mboxrd@z Thu Jan 1 00:00:00 1970 From: Inki Dae Subject: Re: [PATCH] drm/exynos: don't use HW trigger for Exynos5420/5422/5800 Date: Fri, 10 Jun 2016 07:35:30 +0900 Message-ID: <5759EF32.5040302@samsung.com> References: <1464877210-27207-1-git-send-email-javier@osg.samsung.com> <5758A58D.7050106@samsung.com> <6e24059d-16f3-210a-8dd2-f8dcb89213a1@osg.samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-reply-to: <6e24059d-16f3-210a-8dd2-f8dcb89213a1@osg.samsung.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Javier Martinez Canillas , linux-kernel@vger.kernel.org Cc: Krzysztof Kozlowski , linux-samsung-soc@vger.kernel.org, Marc Zyngier , Seung-Woo Kim , dri-devel@lists.freedesktop.org, Kyungmin Park , Kukjin Kim , linux-arm-kernel@lists.infradead.org List-Id: linux-samsung-soc@vger.kernel.org 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Javier Martinez Canillas ?(?) ? ?: > Hello Inki, > > Thanks for your feedback. > > On 06/08/2016 07:09 PM, Inki Dae wrote: >> Hi Javier, >> >> 2016? 06? 02? 23:20? Javier Martinez Canillas ?(?) ? ?: >>> Commit a6f75aa161c5 ("drm/exynos: fimd: add HW trigger support") added >>> hardware trigger support to the FIMD controller driver. But this broke >>> the display in at least the Exynos5800 Peach Pi Chromebook. >>> >>> So until the issue is fixed, avoid using HW trigger for the Exynos5420 >>> based boards and use SW trigger as it was before the mentioned commit. >>> >>> Signed-off-by: Javier Martinez Canillas >>> >>> --- >>> >>> Hello Inki, >>> >>> Since commit a6f75aa161c5 landed in v4.7-rc1, I think $SUBJECT should be >>> picked to make sure that v4.7 is released with the display working for >>> the Exynos5420 based Chromebooks. >>> >>> We can then figure out what's wrong with the HW trigger support and fix >>> it for v4.8. >> >> Agree. And below is a trivial comment. >> > > I'm glad that you agree. > >>> >>> Best regards, >>> Javier >>> >>> drivers/gpu/drm/exynos/exynos_drm_fimd.c | 3 --- >>> 1 file changed, 3 deletions(-) >>> >>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c >>> index 1c23a8ff5e83..f10030ff00e6 100644 >>> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c >>> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c >>> @@ -170,14 +170,11 @@ static struct fimd_driver_data exynos5420_fimd_driver_data = { >>> .lcdblk_vt_shift = 24, >>> .lcdblk_bypass_shift = 15, >>> .lcdblk_mic_bypass_shift = 11, >>> - .trg_type = I80_HW_TRG, >>> .has_shadowcon = 1, >>> .has_vidoutcon = 1, >>> .has_vtsel = 1, >>> .has_mic_bypass = 1, >>> .has_dp_clk = 1, >>> - .has_hw_trigger = 1, >>> - .has_trigger_per_te = 1, >> >> We don't need to remove above two lines. It would be enough to remove 'trg_type = I80_HW_TRG', which makes FIMD to be worked with SW trigger in default. >> > > I know that removing .trg_type is enough but I also removed those lines > because the fields are not used if .trg_type != I80_HW_TRG. So there is > no point to leave a set for unused fields. > > We can latter add those one HW trigger support is fixed for Exynos5420. > As of now, I can merge it but I think it would be not reasonable solution because potential problem still exists even we use SW trigger mode in default - ie., in case of using HW trigger mode at bootloader, same problem would happen as long as we don't support PSR mode support. Thanks, Inki Dae >> Thanks, >> Inki Dae >> >>> }; >>> >>> struct fimd_context { >>> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in >> the body of a message to majordomo at vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > > Best regards, > From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752278AbcFIWfm (ORCPT ); Thu, 9 Jun 2016 18:35:42 -0400 Received: from mailout1.samsung.com ([203.254.224.24]:43022 "EHLO mailout1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751382AbcFIWfj convert rfc822-to-8bit (ORCPT ); Thu, 9 Jun 2016 18:35:39 -0400 X-AuditID: cbfee68e-f79b26d0000013da-d7-5759ef332bce MIME-version: 1.0 Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 8BIT Message-id: <5759EF32.5040302@samsung.com> Date: Fri, 10 Jun 2016 07:35:30 +0900 From: Inki Dae User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 To: Javier Martinez Canillas , linux-kernel@vger.kernel.org Cc: Marc Zyngier , Kukjin Kim , Seung-Woo Kim , dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, Kyungmin Park , Krzysztof Kozlowski , David Airlie , Joonyoung Shim , linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH] drm/exynos: don't use HW trigger for Exynos5420/5422/5800 References: <1464877210-27207-1-git-send-email-javier@osg.samsung.com> <5758A58D.7050106@samsung.com> <6e24059d-16f3-210a-8dd2-f8dcb89213a1@osg.samsung.com> In-reply-to: <6e24059d-16f3-210a-8dd2-f8dcb89213a1@osg.samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrAIsWRmVeSWpSXmKPExsWyRsSkWNf4fWS4wdptPBa9504yWVz5+p7N 4s3bNUwWL+5dZLF4/cLQov/xa2aLs01v2C02Pb7GanF51xw2ixnn9zFZ/L3zD8ia/JLNgcdj zbw1jB6bVnWyeWz/9oDV4373cSaPzUvqPbb032X36NuyitHj8ya5AI4oLpuU1JzMstQifbsE roxZ6zeyFpyVqOi+eI+tgfGbcBcjJ4eEgInEuaOzmSBsMYkL99azdTFycQgJrGCUOLn7IzNM 0c7ee1CJWYwSf6buZQNJ8AoISvyYfI+li5GDg1lAXWLKlFyQMLOAiMSe9jZWCFtbYtnC18wQ vQ8YJb6ducMK0asl8e/baUaQXhYBVYkXJytAwmxA5sQV99lAwqICERLdJypBwiICoRL/Lt5m BBnDLNDOLHH5z1tGkISwgJ/EzdMHWSDmfwM6eut+sNs4BZwl5rbeB1ssIdDKIfHs5CKwxSwC AhLfJh8CO1pCQFZi0wGoJyUlDq64wTKBUXwWktdmIbw2C8lrs5C8toCRZRWjaGpBckFxUnqR kV5xYm5xaV66XnJ+7iZGYMSf/vesbwfjzQPWhxgFOBiVeHgjdkWGC7EmlhVX5h5iNAU6aCKz lGhyPjCt5JXEGxqbGVmYmpgaG5lbmimJ8yZI/QwWEkhPLEnNTk0tSC2KLyrNSS0+xMjEwSnV wOg9u7qMPfJKUOdn1syM+IjeVkHTOElvK7VLT3JZA5nMPzjX8DU2zwl4eFB+xanvXt+27CiM vjbvz27ra7cebFy2LfLw4739lRtmuip6NqcF7N/jdsti66qnbxPXFztve7EjY8FErkdxUk08 qtXyJ2tnPrubv2ha1duc98/LF6XUbzXo7Iosf6zEUpyRaKjFXFScCADsLctp8wIAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprEKsWRmVeSWpSXmKPExsVy+t9jQV3j95HhBk0z2Sx6z51ksrjy9T2b xZu3a5gsXty7yGLx+oWhRf/j18wWZ5vesFtsenyN1eLyrjlsFjPO72Oy+HvnH5A1+SWbA4/H mnlrGD02repk89j+7QGrx/3u40wem5fUe2zpv8vu0bdlFaPH501yARxRDYw2GamJKalFCql5 yfkpmXnptkrewfHO8aZmBoa6hpYW5koKeYm5qbZKLj4Bum6ZOUDXKimUJeaUAoUCEouLlfTt ME0IDXHTtYBpjND1DQmC6zEyQAMJaxgzrq3ZwFZwUbzi4c/sBsZfQl2MnBwSAiYSO3vvsUHY YhIX7q0Hsrk4hARmMUr8mboXLMErICjxY/I9li5GDg5mAXmJI5eyIUx1iSlTciHKHzBKfDtz hxWiXEvi37fTjCA1LAKqEi9OVoCE2YDMiSvus4GERQUiJLpPVIKERQRCJf5dvM0IMoZZoJ1Z 4vKft4wgCWEBP4mbpw+yQMz/xihxcut+sHM4BZwl5rbeZ57ACHQkwnWzEK6bhXDdAkbmVYwS qQXJBcVJ6bmGeanlesWJucWleel6yfm5mxjB6eGZ1A7Gg7vcDzEKcDAq8fBG7IoMF2JNLCuu zD3EKMHBrCTCa/AOKMSbklhZlVqUH19UmpNafIjRFOi9icxSosn5wNSVVxJvaGxiZmRpZG5o YWRsriTO+/j/ujAhgfTEktTs1NSC1CKYPiYOTqkGxhNGYVMOdmyU+vNRfd3LrVUTtvrf/Zu7 79RPMWkdXl+N8+eOzuCcrK+XON3NdrPEDfbXHsp67axJncsmXRP3v+W+da6Sz+PLK25+1tl6 lYPz3VOnw5J1Xatu+SzkYhYpzb8e3H+nkcV0V6/Gv1PCTSovfwsUb83UTn00ab+anOerkmJB kcyTsUosxRmJhlrMRcWJAPihZRclAwAA DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Javier, 2016년 06월 09일 09:17에 Javier Martinez Canillas 이(가) 쓴 글: > Hello Inki, > > Thanks for your feedback. > > On 06/08/2016 07:09 PM, Inki Dae wrote: >> Hi Javier, >> >> 2016년 06월 02일 23:20에 Javier Martinez Canillas 이(가) 쓴 글: >>> Commit a6f75aa161c5 ("drm/exynos: fimd: add HW trigger support") added >>> hardware trigger support to the FIMD controller driver. But this broke >>> the display in at least the Exynos5800 Peach Pi Chromebook. >>> >>> So until the issue is fixed, avoid using HW trigger for the Exynos5420 >>> based boards and use SW trigger as it was before the mentioned commit. >>> >>> Signed-off-by: Javier Martinez Canillas >>> >>> --- >>> >>> Hello Inki, >>> >>> Since commit a6f75aa161c5 landed in v4.7-rc1, I think $SUBJECT should be >>> picked to make sure that v4.7 is released with the display working for >>> the Exynos5420 based Chromebooks. >>> >>> We can then figure out what's wrong with the HW trigger support and fix >>> it for v4.8. >> >> Agree. And below is a trivial comment. >> > > I'm glad that you agree. > >>> >>> Best regards, >>> Javier >>> >>> drivers/gpu/drm/exynos/exynos_drm_fimd.c | 3 --- >>> 1 file changed, 3 deletions(-) >>> >>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimd.c b/drivers/gpu/drm/exynos/exynos_drm_fimd.c >>> index 1c23a8ff5e83..f10030ff00e6 100644 >>> --- a/drivers/gpu/drm/exynos/exynos_drm_fimd.c >>> +++ b/drivers/gpu/drm/exynos/exynos_drm_fimd.c >>> @@ -170,14 +170,11 @@ static struct fimd_driver_data exynos5420_fimd_driver_data = { >>> .lcdblk_vt_shift = 24, >>> .lcdblk_bypass_shift = 15, >>> .lcdblk_mic_bypass_shift = 11, >>> - .trg_type = I80_HW_TRG, >>> .has_shadowcon = 1, >>> .has_vidoutcon = 1, >>> .has_vtsel = 1, >>> .has_mic_bypass = 1, >>> .has_dp_clk = 1, >>> - .has_hw_trigger = 1, >>> - .has_trigger_per_te = 1, >> >> We don't need to remove above two lines. It would be enough to remove 'trg_type = I80_HW_TRG', which makes FIMD to be worked with SW trigger in default. >> > > I know that removing .trg_type is enough but I also removed those lines > because the fields are not used if .trg_type != I80_HW_TRG. So there is > no point to leave a set for unused fields. > > We can latter add those one HW trigger support is fixed for Exynos5420. > As of now, I can merge it but I think it would be not reasonable solution because potential problem still exists even we use SW trigger mode in default - ie., in case of using HW trigger mode at bootloader, same problem would happen as long as we don't support PSR mode support. Thanks, Inki Dae >> Thanks, >> Inki Dae >> >>> }; >>> >>> struct fimd_context { >>> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > > Best regards, >