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drm/i915: Move double wide mode handling into pipe_config 

Determine the need for double wide mode already in compute_config
stage as we need that information to figure out if horizontal
coordinates need to be adjusted.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2013-09-04 18:30:02 +03:00 committed by Daniel Vetter
parent 9a0ea498ec
commit cf532bb255
2 changed files with 22 additions and 11 deletions
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31
drivers/gpu/drm/i915/intel_display.c
View File

@ -4143,6 +4143,23 @@ static int intel_crtc_compute_config(struct intel_crtc *crtc,
struct drm_device *dev = crtc->base.dev;
struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode;
if (INTEL_INFO(dev)->gen < 4) {
struct drm_i915_private *dev_priv = dev->dev_private;
int clock_limit =
dev_priv->display.get_display_clock_speed(dev);
/*
* Enable pixel doubling when the dot clock
* is > 90% of the (display) core speed.
*
* XXX: No double-wide on 915GM pipe B. Is that
* the only reason for the pipe == PIPE_A check?
*/
if (crtc->pipe == PIPE_A &&
adjusted_mode->clock > clock_limit * 9 / 10)
pipe_config->double_wide = true;
}
/* Cantiga+ cannot handle modes with a hsync front porch of 0.
* WaPruneModeWithIncorrectHsyncOffset:ctg,elk,ilk,snb,ivb,vlv,hsw.
*/
@ -4801,17 +4818,8 @@ static void i9xx_set_pipeconf(struct intel_crtc *intel_crtc)
pipeconf = 0;
if (intel_crtc->pipe == 0 && INTEL_INFO(dev)->gen < 4) {
/* Enable pixel doubling when the dot clock is > 90% of the (display)
* core speed.
*
* XXX: No double-wide on 915GM pipe B. Is that the only reason for the
* pipe == 0 check?
*/
if (intel_crtc->config.adjusted_mode.clock >
dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
pipeconf |= PIPECONF_DOUBLE_WIDE;
}
if (intel_crtc->config.double_wide)
pipeconf |= PIPECONF_DOUBLE_WIDE;
/* only g4x and later have fancy bpc/dither controls */
if (IS_G4X(dev) || IS_VALLEYVIEW(dev)) {
@ -8336,6 +8344,7 @@ static void intel_dump_pipe_config(struct intel_crtc *crtc,
pipe_config->pch_pfit.pos,
pipe_config->pch_pfit.size);
DRM_DEBUG_KMS("ips: %i\n", pipe_config->ips_enabled);
DRM_DEBUG_KMS("double wide: %i\n", pipe_config->double_wide);
}
static bool check_encoder_cloning(struct drm_crtc *crtc)

2
drivers/gpu/drm/i915/intel_drv.h
View File

@ -305,6 +305,8 @@ struct intel_crtc_config {
struct intel_link_m_n fdi_m_n;
bool ips_enabled;
bool double_wide;
};
struct intel_crtc {