From: Ville Syrjälä <ville.syrj...@linux.intel.com>
We never support certain mode flags etc. Reject those early on in the
mode_config.mode_valid() hook. That allows us to remove some duplicated
checks from the connector .mode_valid() hooks, and it guarantees that
we never see those flags even from user mode as the
mode_config.mode_valid() hooks gets executed for those as well.
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/intel_crt.c | 3 ---
drivers/gpu/drm/i915/intel_display.c | 27 +++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_dsi.c | 5 -----
drivers/gpu/drm/i915/intel_dvo.c | 3 ---
drivers/gpu/drm/i915/intel_fbc.c | 3 +--
drivers/gpu/drm/i915/intel_hdmi.c | 3 ---
drivers/gpu/drm/i915/intel_sdvo.c | 3 ---
7 files changed, 28 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index 9f31aea51dff..1cd4a7c22bd5 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -304,9 +304,6 @@ intel_crt_mode_valid(struct drm_connector *connector,
int max_dotclk = dev_priv->max_dotclk_freq;
int max_clock;
- if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
- return MODE_NO_DBLESCAN;
-
if (mode->clock < 25000)
return MODE_CLOCK_LOW;
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index ed6a4a8d9273..fec76147d8e5 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -14151,10 +14151,37 @@ static void intel_atomic_state_free(struct
drm_atomic_state *state)
kfree(state);
}
+static enum drm_mode_status
+intel_mode_valid(struct drm_device *dev,
+ const struct drm_display_mode *mode)
+{
+ if (mode->vscan > 1)
+ return MODE_NO_VSCAN;
+
+ if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
+ return MODE_NO_DBLESCAN;
+
+ if (mode->flags & DRM_MODE_FLAG_HSKEW)
+ return MODE_H_ILLEGAL;
+
+ if (mode->flags & (DRM_MODE_FLAG_CSYNC |
+ DRM_MODE_FLAG_NCSYNC |
+ DRM_MODE_FLAG_PCSYNC))
+ return MODE_HSYNC;
+
+ if (mode->flags & (DRM_MODE_FLAG_BCAST |
+ DRM_MODE_FLAG_PIXMUX |
+ DRM_MODE_FLAG_CLKDIV2))
+ return MODE_BAD;
+
+ return MODE_OK;
+}
+
static const struct drm_mode_config_funcs intel_mode_funcs = {
.fb_create = intel_user_framebuffer_create,
.get_format_info = intel_get_format_info,
.output_poll_changed = intel_fbdev_output_poll_changed,
+ .mode_valid = intel_mode_valid,
.atomic_check = intel_atomic_check,
.atomic_commit = intel_atomic_commit,
.atomic_state_alloc = intel_atomic_state_alloc,
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index f09474b0c4d3..c9b5a956c30a 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -1266,11 +1266,6 @@ intel_dsi_mode_valid(struct drm_connector *connector,
DRM_DEBUG_KMS("\n");
- if (mode->flags & DRM_MODE_FLAG_DBLSCAN) {
- DRM_DEBUG_KMS("MODE_NO_DBLESCAN\n");
- return MODE_NO_DBLESCAN;
- }
-
if (fixed_mode) {
if (mode->hdisplay > fixed_mode->hdisplay)
return MODE_PANEL;
diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c
index 754baa00bea9..59c066ca14e5 100644
--- a/drivers/gpu/drm/i915/intel_dvo.c
+++ b/drivers/gpu/drm/i915/intel_dvo.c
@@ -219,9 +219,6 @@ intel_dvo_mode_valid(struct drm_connector *connector,
int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
int target_clock = mode->clock;
- if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
- return MODE_NO_DBLESCAN;
-
/* XXX: Validate clock range */
if (fixed_mode) {
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 1a0f5e0c8d10..f0e74477c678 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -789,8 +789,7 @@ static bool intel_fbc_can_activate(struct intel_crtc *crtc)
return false;
}
- if ((cache->crtc.mode_flags & DRM_MODE_FLAG_INTERLACE) ||
- (cache->crtc.mode_flags & DRM_MODE_FLAG_DBLSCAN)) {
+ if (cache->crtc.mode_flags & DRM_MODE_FLAG_INTERLACE) {
fbc->no_fbc_reason = "incompatible mode";
return false;
}
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c
b/drivers/gpu/drm/i915/intel_hdmi.c
index 2d95db64cdf2..7ce3d14153b4 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1311,9 +1311,6 @@ intel_hdmi_mode_valid(struct drm_connector *connector,
bool force_dvi =
READ_ONCE(to_intel_digital_connector_state(connector->state)->force_audio) ==
HDMI_AUDIO_OFF_DVI;
- if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
- return MODE_NO_DBLESCAN;
-
clock = mode->clock;
if ((mode->flags & DRM_MODE_FLAG_3D_MASK) ==
DRM_MODE_FLAG_3D_FRAME_PACKING)
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c
b/drivers/gpu/drm/i915/intel_sdvo.c
index 2b8764897d68..0bf97ed5ffac 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1607,9 +1607,6 @@ intel_sdvo_mode_valid(struct drm_connector *connector,
struct intel_sdvo *intel_sdvo = intel_attached_sdvo(connector);
int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
- if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
- return MODE_NO_DBLESCAN;
-
if (intel_sdvo->pixel_clock_min > mode->clock)
return MODE_CLOCK_LOW;
--
2.13.6
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