kernel/linux.git/drivers/gpu/drm/stm, branch linux-4.20.y

drm/stm: Replace drm_dev_unref with drm_dev_put

2018-07-13T08:11:02+00:00

This patch unifies the naming of DRM functions for reference counting of struct drm_device. The resulting code is more aligned with the rest of the Linux kernel interfaces. Signed-off-by: Thomas Zimmermann Acked-by: Philippe Cornu Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/20180713080625.18256-1-tzimmermann@suse.de

drm/stm: ltdc: rework reset sequence

2018-07-06T08:15:47+00:00

Reset must be properly assert before deassert. This is important if there is an early boot splash screen before the kernel start up. Signed-off-by: Yannick Fertre Reviewed-by: Philippe Cornu Tested-by: Philippe Cornu Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/1530271355-5608-1-git-send-email-yannick.fertre@st.com

drm/stm: ltdc: filter mode pixel clock vs pad constraint

2018-07-06T08:15:36+00:00

Filter the requested mode pixel clock frequency according to the pad maximum supported frequency. Signed-off-by: Yannick Fertre Reviewed-by: Philippe Cornu Tested-by: Philippe Cornu Signed-off-by: Benjamin Gaignard Link: https://patchwork.freedesktop.org/patch/msgid/1530271342-5532-1-git-send-email-yannick.fertre@st.com

drm/stm: ltdc: fix warnings in ltdc_plane_create()

2018-04-27T09:02:58+00:00

"make C=1" returns 2 warnings in ltdc_plane_create() ("Using plain integer as NULL pointer"). This patch fixes them. Signed-off-by: Philippe Cornu Reviewed-by: Yannick Fertré Link: https://patchwork.freedesktop.org/patch/msgid/20180419132804.8317-1-philippe.cornu@st.com

drm/stm: ltdc: add mode_valid()

2018-04-27T08:58:06+00:00

Add mode_valid() function to filter modes according to available pll clock values and "preferred" modes. It is particularly useful for hdmi modes that require precise pixel clocks. Note that "preferred" modes are always accepted: - this is important for panels because panel clock tolerances are bigger than hdmi ones and there is no reason to not accept them (the fps may vary a little but it is not a problem). - the hdmi preferred mode will be accepted too, but userland will be able to use others hdmi "valid" modes if necessary. Signed-off-by: Philippe Cornu Reviewed-by: Yannick Fertré Link: https://patchwork.freedesktop.org/patch/msgid/20180417114026.8709-1-philippe.cornu@st.com

drm/stm: ltdc: fix deferred endpoint management

2018-04-27T08:39:45+00:00

When a driver related to one of the endpoints is deferred due to probe dependencies (i2c, spi...) but the other one is ready, ltdc probe continues and the deferred driver will never be probed again. The fix consists in waiting for all deferred endpoints before continuing the ltdc probe. Signed-off-by: Philippe Cornu Reviewed-by: Yannick Fertré Link: https://patchwork.freedesktop.org/patch/msgid/20180417113441.8214-1-philippe.cornu@st.com

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

2018-04-19T10:24:45+00:00

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

drm/stm: ltdc: add user update info in plane print state

2018-04-19T10:15:38+00:00

This patch adds the user update information in frames-per-second into the drm debugfs plane state. Signed-off-by: Philippe Cornu Reviewed-by: Vincent Abriou Link: https://patchwork.freedesktop.org/patch/msgid/20180407213503.30932-1-philippe.cornu@st.com

drm/stm: move enable/disable_vblank to crtc

2018-04-19T10:03:11+00:00

enable/disable_vblank() functions at drm_driver level are deprecated. Move them to the ltdc drm_crtc_funcs structure. Signed-off-by: Philippe Cornu Reviewed-by: Vincent Abriou Link: https://patchwork.freedesktop.org/patch/msgid/20180407212937.30407-1-philippe.cornu@st.com

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

2018-02-23T08:37:12+00:00

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