Only lvds/tv did actually check for cloning or not, but many more
places should.
Notices because my ivb tried to enable both cpu edp and vga on the
first crtc - the resulting confusion between has_pch_encoder,
has_dp_encoder but not actually being a pch dp encoder resulting in
hilarity (hitting a BUG).
We _really_ need an igt to random-walk our modeset space more
exhaustively.
I haven't figured out yet why exactly we see this configuration
request from the setcrtc ioctl, but I can reliably reproduce it by
unplugging a bunch of connectors and restarting X.
Strangely restarting X again fixes things ...
v2: Kill intel_encoder_check_is_cloned, spotted by Paulo.
v3: Drop the now unused pipe param.
v4: Kill the stray printk Chris spotted.
Cc: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vet...@ffwll.ch>
---
drivers/gpu/drm/i915/intel_display.c | 64 ++++++++++++++----------------------
drivers/gpu/drm/i915/intel_drv.h | 1 -
drivers/gpu/drm/i915/intel_lvds.c | 3 --
drivers/gpu/drm/i915/intel_tv.c | 3 --
4 files changed, 24 insertions(+), 47 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 14bb844..ba33a82 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5843,27 +5843,9 @@ static int haswell_crtc_mode_set(struct drm_crtc *crtc,
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int pipe = intel_crtc->pipe;
int plane = intel_crtc->plane;
- int num_connectors = 0;
- bool is_cpu_edp = false;
- struct intel_encoder *encoder;
int ret;
- for_each_encoder_on_crtc(dev, crtc, encoder) {
- switch (encoder->type) {
- case INTEL_OUTPUT_EDP:
- if (enc_to_dig_port(&encoder->base)->port == PORT_A)
- is_cpu_edp = true;
- break;
- }
-
- num_connectors++;
- }
-
- WARN(num_connectors != 1, "%d connectors attached to pipe %c\n",
- num_connectors, pipe_name(pipe));
-
if (!intel_ddi_pll_mode_set(crtc))
return -EINVAL;
@@ -7523,28 +7505,6 @@ static struct drm_crtc_helper_funcs intel_helper_funcs =
{
.load_lut = intel_crtc_load_lut,
};
-bool intel_encoder_check_is_cloned(struct intel_encoder *encoder)
-{
- struct intel_encoder *other_encoder;
- struct drm_crtc *crtc = &encoder->new_crtc->base;
-
- if (WARN_ON(!crtc))
- return false;
-
- list_for_each_entry(other_encoder,
- &crtc->dev->mode_config.encoder_list,
- base.head) {
-
- if (&other_encoder->new_crtc->base != crtc ||
- encoder == other_encoder)
- continue;
- else
- return true;
- }
-
- return false;
-}
-
static bool intel_encoder_crtc_ok(struct drm_encoder *encoder,
struct drm_crtc *crtc)
{
@@ -7713,6 +7673,25 @@ static void intel_dump_pipe_config(struct intel_crtc
*crtc,
pipe_config->pch_pfit.size);
}
+static bool check_encoder_cloning(struct drm_crtc *crtc)
+{
+ int num_encoders = 0;
+ bool uncloneable_encoders = false;
+ struct intel_encoder *encoder;
+
+ list_for_each_entry(encoder, &crtc->dev->mode_config.encoder_list,
+ base.head) {
+ if (&encoder->new_crtc->base != crtc)
+ continue;
+
+ num_encoders++;
+ if (!encoder->cloneable)
+ uncloneable_encoders = true;
+ }
+
+ return !(num_encoders > 1 && uncloneable_encoders);
+}
+
static struct intel_crtc_config *
intel_modeset_pipe_config(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
@@ -7725,6 +7704,11 @@ intel_modeset_pipe_config(struct drm_crtc *crtc,
int plane_bpp, ret = -EINVAL;
bool retry = true;
+ if (!check_encoder_cloning(crtc)) {
+ DRM_DEBUG_KMS("rejecting invalid cloning configuration\n");
+ return ERR_PTR(-EINVAL);
+ }
+
pipe_config = kzalloc(sizeof(*pipe_config), GFP_KERNEL);
if (!pipe_config)
return ERR_PTR(-ENOMEM);
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 3db4b14..a844a05 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -627,7 +627,6 @@ extern void intel_crtc_load_lut(struct drm_crtc *crtc);
extern void intel_crtc_update_dpms(struct drm_crtc *crtc);
extern void intel_encoder_destroy(struct drm_encoder *encoder);
extern void intel_encoder_dpms(struct intel_encoder *encoder, int mode);
-extern bool intel_encoder_check_is_cloned(struct intel_encoder *encoder);
extern void intel_connector_dpms(struct drm_connector *, int mode);
extern bool intel_connector_get_hw_state(struct intel_connector *connector);
extern void intel_modeset_check_state(struct drm_device *dev);
diff --git a/drivers/gpu/drm/i915/intel_lvds.c
b/drivers/gpu/drm/i915/intel_lvds.c
index 6554860..10c3d56 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -264,9 +264,6 @@ static bool intel_lvds_compute_config(struct intel_encoder
*intel_encoder,
return false;
}
- if (intel_encoder_check_is_cloned(&lvds_encoder->base))
- return false;
-
if ((I915_READ(lvds_encoder->reg) & LVDS_A3_POWER_MASK) ==
LVDS_A3_POWER_UP)
lvds_bpp = 8*3;
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index 7d11a5a..39debd8 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -914,9 +914,6 @@ intel_tv_compute_config(struct intel_encoder *encoder,
if (!tv_mode)
return false;
- if (intel_encoder_check_is_cloned(&intel_tv->base))
- return false;
-
pipe_config->adjusted_mode.clock = tv_mode->clock;
DRM_DEBUG_KMS("forcing bpc to 8 for TV\n");
pipe_config->pipe_bpp = 8*3;
--
1.7.11.7
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