From e995ca0b8139c5f6807095464e969931b443f55a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Tue, 14 Nov 2017 20:32:58 +0200 Subject: [PATCH] drm/i915: Provide a device level .mode_valid() hook MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Link: https://patchwork.freedesktop.org/patch/msgid/20171114183258.16976-11-ville.syrjala@linux.intel.com Reviewed-by: Daniel Vetter --- 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 eb2322175624..9803da5fd6b3 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -14082,10 +14082,37 @@ 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 f67d321376e4..51a1d6868b1e 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 f88c1b5dae4c..eee1b02c827e 100644 --- a/drivers/gpu/drm/i915/intel_fbc.c +++ b/drivers/gpu/drm/i915/intel_fbc.c @@ -794,8 +794,7 @@ 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 bced7b954d93..8a9a925410e5 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -1314,9 +1314,6 @@ 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;