This is a note to let you know that I've just added the patch titled
drm/cirrus: Load lut in crtc_commit
to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: drm-cirrus-load-lut-in-crtc_commit.patch and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From 745fd50f3b044db6a3922e1718306555613164b0 Mon Sep 17 00:00:00 2001
From: Daniel Vetter daniel.vetter@ffwll.ch Date: Wed, 31 Jan 2018 12:04:50 +0100 Subject: drm/cirrus: Load lut in crtc_commit
From: Daniel Vetter daniel.vetter@ffwll.ch
commit 745fd50f3b044db6a3922e1718306555613164b0 upstream.
In the past the ast driver relied upon the fbdev emulation helpers to call ->load_lut at boot-up. But since
commit b8e2b0199cc377617dc238f5106352c06dcd3fa2 Author: Peter Rosin peda@axentia.se Date: Tue Jul 4 12:36:57 2017 +0200
drm/fb-helper: factor out pseudo-palette
that's cleaned up and drivers are expected to boot into a consistent lut state. This patch fixes that.
Fixes: b8e2b0199cc3 ("drm/fb-helper: factor out pseudo-palette") Cc: Peter Rosin peda@axenita.se Cc: Daniel Vetter daniel.vetter@ffwll.ch Cc: stable@vger.kernel.org # v4.14+ References: https://bugzilla.kernel.org/show_bug.cgi?id=198123 Signed-off-by: Daniel Vetter daniel.vetter@intel.com Link: http://patchwork.freedesktop.org/patch/msgid/20180131110450.22153-1-daniel.v... Signed-off-by: Gerd Hoffmann kraxel@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/gpu/drm/cirrus/cirrus_mode.c | 40 ++++++++++++++++++++--------------- 1 file changed, 23 insertions(+), 17 deletions(-)
--- a/drivers/gpu/drm/cirrus/cirrus_mode.c +++ b/drivers/gpu/drm/cirrus/cirrus_mode.c @@ -294,22 +294,7 @@ static void cirrus_crtc_prepare(struct d { }
-/* - * This is called after a mode is programmed. It should reverse anything done - * by the prepare function - */ -static void cirrus_crtc_commit(struct drm_crtc *crtc) -{ -} - -/* - * The core can pass us a set of gamma values to program. We actually only - * use this for 8-bit mode so can't perform smooth fades on deeper modes, - * but it's a requirement that we provide the function - */ -static int cirrus_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green, - u16 *blue, uint32_t size, - struct drm_modeset_acquire_ctx *ctx) +static void cirrus_crtc_load_lut(struct drm_crtc *crtc) { struct drm_device *dev = crtc->dev; struct cirrus_device *cdev = dev->dev_private; @@ -317,7 +302,7 @@ static int cirrus_crtc_gamma_set(struct int i;
if (!crtc->enabled) - return 0; + return;
r = crtc->gamma_store; g = r + crtc->gamma_size; @@ -330,6 +315,27 @@ static int cirrus_crtc_gamma_set(struct WREG8(PALETTE_DATA, *g++ >> 8); WREG8(PALETTE_DATA, *b++ >> 8); } +} + +/* + * This is called after a mode is programmed. It should reverse anything done + * by the prepare function + */ +static void cirrus_crtc_commit(struct drm_crtc *crtc) +{ + cirrus_crtc_load_lut(crtc); +} + +/* + * The core can pass us a set of gamma values to program. We actually only + * use this for 8-bit mode so can't perform smooth fades on deeper modes, + * but it's a requirement that we provide the function + */ +static int cirrus_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green, + u16 *blue, uint32_t size, + struct drm_modeset_acquire_ctx *ctx) +{ + cirrus_crtc_load_lut(crtc);
return 0; }
Patches currently in stable-queue which might be from daniel.vetter@ffwll.ch are
queue-4.15/drm-handle-unexpected-holes-in-color-eviction.patch queue-4.15/drm-cirrus-load-lut-in-crtc_commit.patch queue-4.15/drm-edid-add-6-bpc-quirk-for-cpt-panel-in-asus-ux303la.patch