Message ID | 1442595836-23981-33-git-send-email-ville.syrjala@linux.intel.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
On 09/18/2015 10:03 AM, ville.syrjala@linux.intel.com wrote: > From: Ville Syrjälä <ville.syrjala@linux.intel.com> > > Keep single 'lvds_reg' and 'lvds' variable around in > intel_lvds_init(), and read it just once at the start. > > Also intel_lvds_get_config() doesn't need to figure out which reg to use > since it can just consult lvds_encoder->reg. > > Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> > --- > drivers/gpu/drm/i915/intel_lvds.c | 30 ++++++++++++++---------------- > 1 file changed, 14 insertions(+), 16 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c > index 2c2d1f0..35bad71 100644 > --- a/drivers/gpu/drm/i915/intel_lvds.c > +++ b/drivers/gpu/drm/i915/intel_lvds.c > @@ -98,15 +98,11 @@ static void intel_lvds_get_config(struct intel_encoder *encoder, > { > struct drm_device *dev = encoder->base.dev; > struct drm_i915_private *dev_priv = dev->dev_private; > - u32 lvds_reg, tmp, flags = 0; > + struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base); > + u32 tmp, flags = 0; > int dotclock; > > - if (HAS_PCH_SPLIT(dev)) > - lvds_reg = PCH_LVDS; > - else > - lvds_reg = LVDS; > - > - tmp = I915_READ(lvds_reg); > + tmp = I915_READ(lvds_encoder->reg); > if (tmp & LVDS_HSYNC_POLARITY) > flags |= DRM_MODE_FLAG_NHSYNC; > else > @@ -944,6 +940,7 @@ void intel_lvds_init(struct drm_device *dev) > struct drm_display_mode *downclock_mode = NULL; > struct edid *edid; > struct drm_crtc *crtc; > + u32 lvds_reg; > u32 lvds; > int pipe; > u8 pin; > @@ -966,8 +963,15 @@ void intel_lvds_init(struct drm_device *dev) > if (dmi_check_system(intel_no_lvds)) > return; > > + if (HAS_PCH_SPLIT(dev)) > + lvds_reg = PCH_LVDS; > + else > + lvds_reg = LVDS; > + > + lvds = I915_READ(lvds_reg); > + > if (HAS_PCH_SPLIT(dev)) { > - if ((I915_READ(PCH_LVDS) & LVDS_DETECTED) == 0) > + if ((lvds & LVDS_DETECTED) == 0) > return; > if (dev_priv->vbt.edp_support) { > DRM_DEBUG_KMS("disable LVDS for eDP support\n"); > @@ -977,8 +981,7 @@ void intel_lvds_init(struct drm_device *dev) > > pin = GMBUS_PIN_PANEL; > if (!lvds_is_present_in_vbt(dev, &pin)) { > - u32 reg = HAS_PCH_SPLIT(dev) ? PCH_LVDS : LVDS; > - if ((I915_READ(reg) & LVDS_PORT_EN) == 0) { > + if ((lvds & LVDS_PORT_EN) == 0) { > DRM_DEBUG_KMS("LVDS is not present in VBT\n"); > return; > } > @@ -1055,11 +1058,7 @@ void intel_lvds_init(struct drm_device *dev) > connector->interlace_allowed = false; > connector->doublescan_allowed = false; > > - if (HAS_PCH_SPLIT(dev)) { > - lvds_encoder->reg = PCH_LVDS; > - } else { > - lvds_encoder->reg = LVDS; > - } > + lvds_encoder->reg = lvds_reg; > > /* create the scaling mode property */ > drm_mode_create_scaling_mode_property(dev); > @@ -1140,7 +1139,6 @@ void intel_lvds_init(struct drm_device *dev) > if (HAS_PCH_SPLIT(dev)) > goto failed; > > - lvds = I915_READ(LVDS); > pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0; > crtc = intel_get_crtc_for_pipe(dev, pipe); > > Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Hi Ville, On Fri, Sep 18, 2015 at 08:03:45PM +0300, ville.syrjala@linux.intel.com wrote: > From: Ville Syrjälä <ville.syrjala@linux.intel.com> > > Keep single 'lvds_reg' and 'lvds' variable around in > intel_lvds_init(), and read it just once at the start. Hm, is it intentional that you didn't also replace this register readout at the end of the function? lvds_encoder->a3_power = I915_READ(lvds_encoder->reg) & LVDS_A3_POWER_MASK; (Sorry, I only noticed this today, post-merge, while rebasing my LVDS reprobing stuff.) Best regards, Lukas > > Also intel_lvds_get_config() doesn't need to figure out which reg to use > since it can just consult lvds_encoder->reg. > > Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> > --- > drivers/gpu/drm/i915/intel_lvds.c | 30 ++++++++++++++---------------- > 1 file changed, 14 insertions(+), 16 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c > index 2c2d1f0..35bad71 100644 > --- a/drivers/gpu/drm/i915/intel_lvds.c > +++ b/drivers/gpu/drm/i915/intel_lvds.c > @@ -98,15 +98,11 @@ static void intel_lvds_get_config(struct intel_encoder *encoder, > { > struct drm_device *dev = encoder->base.dev; > struct drm_i915_private *dev_priv = dev->dev_private; > - u32 lvds_reg, tmp, flags = 0; > + struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base); > + u32 tmp, flags = 0; > int dotclock; > > - if (HAS_PCH_SPLIT(dev)) > - lvds_reg = PCH_LVDS; > - else > - lvds_reg = LVDS; > - > - tmp = I915_READ(lvds_reg); > + tmp = I915_READ(lvds_encoder->reg); > if (tmp & LVDS_HSYNC_POLARITY) > flags |= DRM_MODE_FLAG_NHSYNC; > else > @@ -944,6 +940,7 @@ void intel_lvds_init(struct drm_device *dev) > struct drm_display_mode *downclock_mode = NULL; > struct edid *edid; > struct drm_crtc *crtc; > + u32 lvds_reg; > u32 lvds; > int pipe; > u8 pin; > @@ -966,8 +963,15 @@ void intel_lvds_init(struct drm_device *dev) > if (dmi_check_system(intel_no_lvds)) > return; > > + if (HAS_PCH_SPLIT(dev)) > + lvds_reg = PCH_LVDS; > + else > + lvds_reg = LVDS; > + > + lvds = I915_READ(lvds_reg); > + > if (HAS_PCH_SPLIT(dev)) { > - if ((I915_READ(PCH_LVDS) & LVDS_DETECTED) == 0) > + if ((lvds & LVDS_DETECTED) == 0) > return; > if (dev_priv->vbt.edp_support) { > DRM_DEBUG_KMS("disable LVDS for eDP support\n"); > @@ -977,8 +981,7 @@ void intel_lvds_init(struct drm_device *dev) > > pin = GMBUS_PIN_PANEL; > if (!lvds_is_present_in_vbt(dev, &pin)) { > - u32 reg = HAS_PCH_SPLIT(dev) ? PCH_LVDS : LVDS; > - if ((I915_READ(reg) & LVDS_PORT_EN) == 0) { > + if ((lvds & LVDS_PORT_EN) == 0) { > DRM_DEBUG_KMS("LVDS is not present in VBT\n"); > return; > } > @@ -1055,11 +1058,7 @@ void intel_lvds_init(struct drm_device *dev) > connector->interlace_allowed = false; > connector->doublescan_allowed = false; > > - if (HAS_PCH_SPLIT(dev)) { > - lvds_encoder->reg = PCH_LVDS; > - } else { > - lvds_encoder->reg = LVDS; > - } > + lvds_encoder->reg = lvds_reg; > > /* create the scaling mode property */ > drm_mode_create_scaling_mode_property(dev); > @@ -1140,7 +1139,6 @@ void intel_lvds_init(struct drm_device *dev) > if (HAS_PCH_SPLIT(dev)) > goto failed; > > - lvds = I915_READ(LVDS); > pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0; > crtc = intel_get_crtc_for_pipe(dev, pipe); > > -- > 2.4.6 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/intel-gfx
On Sun, Nov 01, 2015 at 04:33:57PM +0100, Lukas Wunner wrote: > Hi Ville, > > On Fri, Sep 18, 2015 at 08:03:45PM +0300, ville.syrjala@linux.intel.com wrote: > > From: Ville Syrjälä <ville.syrjala@linux.intel.com> > > > > Keep single 'lvds_reg' and 'lvds' variable around in > > intel_lvds_init(), and read it just once at the start. > > Hm, is it intentional that you didn't also replace this register readout > at the end of the function? > > lvds_encoder->a3_power = I915_READ(lvds_encoder->reg) & > LVDS_A3_POWER_MASK; Simply didn't notice that bit. > > (Sorry, I only noticed this today, post-merge, while rebasing my LVDS > reprobing stuff.) > > Best regards, > > Lukas > > > > > Also intel_lvds_get_config() doesn't need to figure out which reg to use > > since it can just consult lvds_encoder->reg. > > > > Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> > > --- > > drivers/gpu/drm/i915/intel_lvds.c | 30 ++++++++++++++---------------- > > 1 file changed, 14 insertions(+), 16 deletions(-) > > > > diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c > > index 2c2d1f0..35bad71 100644 > > --- a/drivers/gpu/drm/i915/intel_lvds.c > > +++ b/drivers/gpu/drm/i915/intel_lvds.c > > @@ -98,15 +98,11 @@ static void intel_lvds_get_config(struct intel_encoder *encoder, > > { > > struct drm_device *dev = encoder->base.dev; > > struct drm_i915_private *dev_priv = dev->dev_private; > > - u32 lvds_reg, tmp, flags = 0; > > + struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base); > > + u32 tmp, flags = 0; > > int dotclock; > > > > - if (HAS_PCH_SPLIT(dev)) > > - lvds_reg = PCH_LVDS; > > - else > > - lvds_reg = LVDS; > > - > > - tmp = I915_READ(lvds_reg); > > + tmp = I915_READ(lvds_encoder->reg); > > if (tmp & LVDS_HSYNC_POLARITY) > > flags |= DRM_MODE_FLAG_NHSYNC; > > else > > @@ -944,6 +940,7 @@ void intel_lvds_init(struct drm_device *dev) > > struct drm_display_mode *downclock_mode = NULL; > > struct edid *edid; > > struct drm_crtc *crtc; > > + u32 lvds_reg; > > u32 lvds; > > int pipe; > > u8 pin; > > @@ -966,8 +963,15 @@ void intel_lvds_init(struct drm_device *dev) > > if (dmi_check_system(intel_no_lvds)) > > return; > > > > + if (HAS_PCH_SPLIT(dev)) > > + lvds_reg = PCH_LVDS; > > + else > > + lvds_reg = LVDS; > > + > > + lvds = I915_READ(lvds_reg); > > + > > if (HAS_PCH_SPLIT(dev)) { > > - if ((I915_READ(PCH_LVDS) & LVDS_DETECTED) == 0) > > + if ((lvds & LVDS_DETECTED) == 0) > > return; > > if (dev_priv->vbt.edp_support) { > > DRM_DEBUG_KMS("disable LVDS for eDP support\n"); > > @@ -977,8 +981,7 @@ void intel_lvds_init(struct drm_device *dev) > > > > pin = GMBUS_PIN_PANEL; > > if (!lvds_is_present_in_vbt(dev, &pin)) { > > - u32 reg = HAS_PCH_SPLIT(dev) ? PCH_LVDS : LVDS; > > - if ((I915_READ(reg) & LVDS_PORT_EN) == 0) { > > + if ((lvds & LVDS_PORT_EN) == 0) { > > DRM_DEBUG_KMS("LVDS is not present in VBT\n"); > > return; > > } > > @@ -1055,11 +1058,7 @@ void intel_lvds_init(struct drm_device *dev) > > connector->interlace_allowed = false; > > connector->doublescan_allowed = false; > > > > - if (HAS_PCH_SPLIT(dev)) { > > - lvds_encoder->reg = PCH_LVDS; > > - } else { > > - lvds_encoder->reg = LVDS; > > - } > > + lvds_encoder->reg = lvds_reg; > > > > /* create the scaling mode property */ > > drm_mode_create_scaling_mode_property(dev); > > @@ -1140,7 +1139,6 @@ void intel_lvds_init(struct drm_device *dev) > > if (HAS_PCH_SPLIT(dev)) > > goto failed; > > > > - lvds = I915_READ(LVDS); > > pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0; > > crtc = intel_get_crtc_for_pipe(dev, pipe); > > > > -- > > 2.4.6 > > > > _______________________________________________ > > Intel-gfx mailing list > > Intel-gfx@lists.freedesktop.org > > http://lists.freedesktop.org/mailman/listinfo/intel-gfx
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c index 2c2d1f0..35bad71 100644 --- a/drivers/gpu/drm/i915/intel_lvds.c +++ b/drivers/gpu/drm/i915/intel_lvds.c @@ -98,15 +98,11 @@ static void intel_lvds_get_config(struct intel_encoder *encoder, { struct drm_device *dev = encoder->base.dev; struct drm_i915_private *dev_priv = dev->dev_private; - u32 lvds_reg, tmp, flags = 0; + struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base); + u32 tmp, flags = 0; int dotclock; - if (HAS_PCH_SPLIT(dev)) - lvds_reg = PCH_LVDS; - else - lvds_reg = LVDS; - - tmp = I915_READ(lvds_reg); + tmp = I915_READ(lvds_encoder->reg); if (tmp & LVDS_HSYNC_POLARITY) flags |= DRM_MODE_FLAG_NHSYNC; else @@ -944,6 +940,7 @@ void intel_lvds_init(struct drm_device *dev) struct drm_display_mode *downclock_mode = NULL; struct edid *edid; struct drm_crtc *crtc; + u32 lvds_reg; u32 lvds; int pipe; u8 pin; @@ -966,8 +963,15 @@ void intel_lvds_init(struct drm_device *dev) if (dmi_check_system(intel_no_lvds)) return; + if (HAS_PCH_SPLIT(dev)) + lvds_reg = PCH_LVDS; + else + lvds_reg = LVDS; + + lvds = I915_READ(lvds_reg); + if (HAS_PCH_SPLIT(dev)) { - if ((I915_READ(PCH_LVDS) & LVDS_DETECTED) == 0) + if ((lvds & LVDS_DETECTED) == 0) return; if (dev_priv->vbt.edp_support) { DRM_DEBUG_KMS("disable LVDS for eDP support\n"); @@ -977,8 +981,7 @@ void intel_lvds_init(struct drm_device *dev) pin = GMBUS_PIN_PANEL; if (!lvds_is_present_in_vbt(dev, &pin)) { - u32 reg = HAS_PCH_SPLIT(dev) ? PCH_LVDS : LVDS; - if ((I915_READ(reg) & LVDS_PORT_EN) == 0) { + if ((lvds & LVDS_PORT_EN) == 0) { DRM_DEBUG_KMS("LVDS is not present in VBT\n"); return; } @@ -1055,11 +1058,7 @@ void intel_lvds_init(struct drm_device *dev) connector->interlace_allowed = false; connector->doublescan_allowed = false; - if (HAS_PCH_SPLIT(dev)) { - lvds_encoder->reg = PCH_LVDS; - } else { - lvds_encoder->reg = LVDS; - } + lvds_encoder->reg = lvds_reg; /* create the scaling mode property */ drm_mode_create_scaling_mode_property(dev); @@ -1140,7 +1139,6 @@ void intel_lvds_init(struct drm_device *dev) if (HAS_PCH_SPLIT(dev)) goto failed; - lvds = I915_READ(LVDS); pipe = (lvds & LVDS_PIPEB_SELECT) ? 1 : 0; crtc = intel_get_crtc_for_pipe(dev, pipe);