kernel/drivers/gpu/drm/stm, branch linux-4.17.y

drm/stm: ltdc: fix warning in ltdc_crtc_update_clut()

2018-08-03T05:48:01Z

[ Upstream commit c20f5f69c898899027c3e573afaab837195895b6 ] Fix the warning "warn: variable dereferenced before check 'crtc' (see line 390)" by removing unnecessary checks as ltdc_crtc_update_clut() is only called from ltdc_crtc_atomic_flush() where crtc and crtc->state are not NULL. Many thanks to Dan Carpenter for the bug report https://lists.freedesktop.org/archives/dri-devel/2018-February/166918.html Signed-off-by: Philippe Cornu Reported-by: Dan Carpenter Reviewed-by: yannick fertre Link: https://patchwork.freedesktop.org/patch/msgid/20180410135312.3553-1-philippe.cornu@st.com Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

drm/stm: check pitch and size calculations even if !CONFIG_MMU

2018-02-23T08:37:12Z

In all cases we have to check pitch and size calculations to speed up data transfer. Fixes: 21f815bf773c ("drm/stm: drv: Improve data transfers") Signed-off-by: Benjamin Gaignard Tested-by: Philippe Cornu Reviewed-by: Philippe Cornu Link: https://patchwork.freedesktop.org/patch/msgid/20180131080508.14356-1-benjamin.gaignard@linaro.org

drm/stm: ltdc: remove non-alpha color formats on layer 2 for older hw

2018-02-08T09:23:32Z

Hw older versions support non-alpha color formats derived from native alpha color formats only on the primary layer. For instance, RG16 native format without alpha works fine on 2nd layer but XR24 (derived color format from AR24) does not work on 2nd layer. Signed-off-by: Philippe Cornu Reviewed-by: Yannick Fertré Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/20180201104243.20726-3-philippe.cornu@st.com

drm/stm: ltdc: add non-alpha color formats

2018-02-08T09:23:22Z

ltdc supports natively some color formats with alpha (like ARGB8888, ARGB1555, ARGB4444...). Related non-alpha formats are supported too (ARGB8888->XRGB8888, ARGB4444->XRGB4444...) by adjusting ltdc blending factors. Note: Wayland/Weston requests by default the non-alpha XRGB8888 color format. Signed-off-by: Philippe Cornu Reviewed-by: Yannick Fertré Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/20180201104243.20726-2-philippe.cornu@st.com

drm/stm: drv: Improve data transfers

2018-01-30T10:45:15Z

To optimize data transfers, align pitch on 128 bytes & height on 4 bytes. This optimization is not applicable on hw without MMU. Signed-off-by: Yannick Fertre Signed-off-by: Vincent Abriou Signed-off-by: Philippe Cornu Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/20180130104200.21602-1-philippe.cornu@st.com

drm/stm: dsi: Add 1.31 version support

2018-01-30T10:45:01Z

Add support for the stm dsi phy/wrapper version 1.31. Only lane capabilities need to be modified. Signed-off-by: Philippe Cornu Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/20180122164628.24728-1-philippe.cornu@st.com

drm/stm: ltdc: use crtc_mode_fixup to update adjusted_mode clock

2018-01-29T10:07:16Z

There is a difference between the panel/bridge requested pixel clock value and the real one due to the hw platform clock preciseness (pll, dividers...). This patch updates the adjusted_mode clock value with the real hw clock value so then attached encoder & connector can use it for precise timing computations. Signed-off-by: Philippe Cornu Reviewed-by: Yannick Fertré Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/20180125160101.9102-1-philippe.cornu@st.com

drm/bridge/synopsys: stop clobbering drvdata

2018-01-09T13:34:38Z

Bridge drivers/helpers shouldn't be clobbering the drvdata, since a parent driver might need to own this. Instead, let's return our 'dw_mipi_dsi' object and have callers pass that back to us for removal. Signed-off-by: Brian Norris Reviewed-by: Matthias Kaehlcke Reviewed-by: Archit Taneja Acked-by: Philippe Cornu Signed-off-by: Andrzej Hajda Link: https://patchwork.freedesktop.org/patch/msgid/20171128010538.119114-1-briannorris@chromium.org

drm/stm: ltdc: add clut mode support

2018-01-09T12:40:51Z

Add the 8-bit clut mode support at crtc level. Useful for low memory footprint user interfaces but also for 8-bit old games (including color shifting visual effects). Tested with fbdev FBIOPUTCMAP & drm DRM_IOCTL_MODE_SETGAMMA ioctls. Signed-off-by: Philippe Cornu Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/1509016666-18927-1-git-send-email-philippe.cornu@st.com

drm/stm: ltdc: Remove unnecessary platform_get_resource() error check

2017-12-19T14:23:45Z

devm_ioremap_resource() already checks if the resource is NULL, so remove the unnecessary platform_get_resource() error check. Cc: Philippe Cornu Signed-off-by: Fabio Estevam Acked-by: Philippe Cornu Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/1513602150-7542-6-git-send-email-festevam@gmail.com