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This patch updates scaler max limit support for NV12 v2: Rebased (me) v3: Rebased (me) v4: Missed the Tested-by/Reviewed-by in the previous series Adding the same to commit message in this version. v5: Addressed review comments from Ville and rebased - calculation of max_scale to be made less convoluted by splitting it up a bit - Indentation errors to be fixed in the series v6: Rebased (me) Fixed review comments from Paauwe, Bob J Previous version, where a split of calculation was done, was wrong. Fixed that issue here. v7: Rebased (me) v8: Rebased (me) v9: Rebased (me) v10: Rebased (me) v11: Addressed review comments from Shashank Sharma Alignment issues fixed. When call to skl_update_scaler is made, 0 was being sent instead of pixel_format. When crtc update scaler is called, we dont have the fb to derive the pixel format. Added the function parameter bool plane_scaler_check to account for this. v12: Fixed failure in IGT debugfs_test. fb is NULL in skl_update_scaler_plane Due to this, accessing fb->format caused failure. Patch checks fb before using. v13: In the previous version there was a flaw. In skl_update_scaler during plane_scaler_check if the format was non-NV12, it would set need_scaling to false. This could reset the previously set need_scaling from a previous condition check. Patch fixes this. Patch also adds minimum src height for YUV 420 formats to 16 (as defined in BSpec) and adds for checking this range. v14: Addressed review comments from Maarten Just add a check for NV12 min src height in skl_update_scaler and retain the remaining checks as is. Added Reviewed By from Juha-Pekka Heikkila. v15: Rebased the series. v16: Changed fb height restriction to be >= 16 as per Bspec. Earlier it was > 16. v17: Adding src width and height to be mult of 4 restriction to avoid pipe fifo underruns for NV12. Credits-to: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Tested-by: Clinton Taylor <clinton.a.taylor@intel.com> Reviewed-by: Clinton Taylor <clinton.a.taylor@intel.com> Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com> Signed-off-by: Chandra Konduru <chandra.konduru@intel.com> Signed-off-by: Nabendu Maiti <nabendu.bikash.maiti@intel.com> Signed-off-by: Vidya Srinivas <vidya.srinivas@intel.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1523245273-30264-15-git-send-email-vidya.srinivas@intel.com
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.