This is a note to let you know that I've just added the patch titled
drm/i915: Add support for pipe_bpp readout
to the 3.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-add-support-for-pipe_bpp-readout.patch
and it can be found in the queue-3.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4f56d12ebb28fceac4c6e60c8993fbfc122e1399 Mon Sep 17 00:00:00 2001
From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Date: Mon, 21 Oct 2013 10:52:06 +0300
Subject: drm/i915: Add support for pipe_bpp readout
From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
commit 4f56d12ebb28fceac4c6e60c8993fbfc122e1399 upstream.
On CTG+ read out the pipe bpp setting from hardware and fill it into
pipe config. Also check it appropriately.
v2: Don't do the pipe_bpp extraction inside the PCH only code block on
ILK+.
Avoid the PIPECONF read as we already have read it for the
PIPECONF_EANBLE check.
Note: This is already in drm-intel-next-queued as
commit 42571aefafb1d330ef84eb29418832f72e7dfb4c
Author: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Date: Fri Sep 6 23:29:00 2013 +0300
drm/i915: Add support for pipe_bpp readout
but is needed for the following bugfix.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_ddi.c | 17 ++++++++++++++++
drivers/gpu/drm/i915/intel_display.c | 36 +++++++++++++++++++++++++++++++++++
2 files changed, 53 insertions(+)
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1280,6 +1280,23 @@ void intel_ddi_get_config(struct intel_e
flags |= DRM_MODE_FLAG_NVSYNC;
pipe_config->adjusted_mode.flags |= flags;
+
+ switch (temp & TRANS_DDI_BPC_MASK) {
+ case TRANS_DDI_BPC_6:
+ pipe_config->pipe_bpp = 18;
+ break;
+ case TRANS_DDI_BPC_8:
+ pipe_config->pipe_bpp = 24;
+ break;
+ case TRANS_DDI_BPC_10:
+ pipe_config->pipe_bpp = 30;
+ break;
+ case TRANS_DDI_BPC_12:
+ pipe_config->pipe_bpp = 36;
+ break;
+ default:
+ break;
+ }
}
static void intel_ddi_destroy(struct drm_encoder *encoder)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4943,6 +4943,22 @@ static bool i9xx_get_pipe_config(struct
if (!(tmp & PIPECONF_ENABLE))
return false;
+ if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
+ switch (tmp & PIPECONF_BPC_MASK) {
+ case PIPECONF_6BPC:
+ pipe_config->pipe_bpp = 18;
+ break;
+ case PIPECONF_8BPC:
+ pipe_config->pipe_bpp = 24;
+ break;
+ case PIPECONF_10BPC:
+ pipe_config->pipe_bpp = 30;
+ break;
+ default:
+ break;
+ }
+ }
+
intel_get_pipe_timings(crtc, pipe_config);
i9xx_get_pfit_config(crtc, pipe_config);
@@ -5821,6 +5837,23 @@ static bool ironlake_get_pipe_config(str
if (!(tmp & PIPECONF_ENABLE))
return false;
+ switch (tmp & PIPECONF_BPC_MASK) {
+ case PIPECONF_6BPC:
+ pipe_config->pipe_bpp = 18;
+ break;
+ case PIPECONF_8BPC:
+ pipe_config->pipe_bpp = 24;
+ break;
+ case PIPECONF_10BPC:
+ pipe_config->pipe_bpp = 30;
+ break;
+ case PIPECONF_12BPC:
+ pipe_config->pipe_bpp = 36;
+ break;
+ default:
+ break;
+ }
+
if (I915_READ(PCH_TRANSCONF(crtc->pipe)) & TRANS_ENABLE) {
struct intel_shared_dpll *pll;
@@ -8147,6 +8180,9 @@ intel_pipe_config_compare(struct drm_dev
PIPE_CONF_CHECK_X(dpll_hw_state.fp0);
PIPE_CONF_CHECK_X(dpll_hw_state.fp1);
+ if (IS_G4X(dev) || INTEL_INFO(dev)->gen >= 5)
+ PIPE_CONF_CHECK_I(pipe_bpp);
+
#undef PIPE_CONF_CHECK_X
#undef PIPE_CONF_CHECK_I
#undef PIPE_CONF_CHECK_FLAGS
Patches currently in stable-queue which might be from ville.syrjala@xxxxxxxxxxxxxxx are
queue-3.11/drm-i915-add-hsw-crt-output-readout-support.patch
queue-3.11/drm-i915-fix-the-ppt-fdi-lane-bifurcate-state-handling-on-ivb.patch
queue-3.11/drm-i915-add-support-for-pipe_bpp-readout.patch
queue-3.11/drm-prevent-overwriting-from-userspace-underallocating-core-ioctl-structs.patch
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