drm/i915: add intel_ddi_set_pipe_settings

In theory, all the DDI pipe settings should be set here, including
timing and M/N registers. For now, let's just set the DP MSA
attributes.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
[danvet: fixed up the unused typo in a #define, spotted by Jani
Nikula.]
Reviewed-by: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index fdcf6d9..fafdd9f 100644 (file)
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4542,6 +4542,16 @@
 #define  PIPE_CLK_SEL_DISABLED         (0x0<<29)
 #define  PIPE_CLK_SEL_PORT(x)          ((x+1)<<29)
 
+#define _PIPEA_MSA_MISC                        0x60410
+#define _PIPEB_MSA_MISC                        0x61410
+#define PIPE_MSA_MISC(pipe) _PIPE(pipe, _PIPEA_MSA_MISC, _PIPEB_MSA_MISC)
+#define  PIPE_MSA_SYNC_CLK             (1<<0)
+#define  PIPE_MSA_6_BPC                        (0<<5)
+#define  PIPE_MSA_8_BPC                        (1<<5)
+#define  PIPE_MSA_10_BPC               (2<<5)
+#define  PIPE_MSA_12_BPC               (3<<5)
+#define  PIPE_MSA_16_BPC               (4<<5)
+
 /* LCPLL Control */
 #define LCPLL_CTL                      0x130040
 #define  LCPLL_PLL_DISABLE             (1<<31)

diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 9659c22..e58df71 100644 (file)
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -827,6 +827,40 @@ bool intel_ddi_pll_mode_set(struct drm_crtc *crtc, int clock)
        return true;
 }
 
+void intel_ddi_set_pipe_settings(struct drm_crtc *crtc)
+{
+       struct drm_i915_private *dev_priv = crtc->dev->dev_private;
+       struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+       struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
+       enum pipe pipe = intel_crtc->pipe;
+       int type = intel_encoder->type;
+       uint32_t temp;
+
+       if (type == INTEL_OUTPUT_DISPLAYPORT || type == INTEL_OUTPUT_EDP) {
+
+               temp = PIPE_MSA_SYNC_CLK;
+               switch (intel_crtc->bpp) {
+               case 18:
+                       temp |= PIPE_MSA_6_BPC;
+                       break;
+               case 24:
+                       temp |= PIPE_MSA_8_BPC;
+                       break;
+               case 30:
+                       temp |= PIPE_MSA_10_BPC;
+                       break;
+               case 36:
+                       temp |= PIPE_MSA_12_BPC;
+                       break;
+               default:
+                       temp |= PIPE_MSA_8_BPC;
+                       WARN(1, "%d bpp unsupported by pipe DDI function\n",
+                            intel_crtc->bpp);
+               }
+               I915_WRITE(PIPE_MSA_MISC(pipe), temp);
+       }
+}
+
 void intel_ddi_enable_pipe_func(struct drm_crtc *crtc)
 {
        struct intel_crtc *intel_crtc = to_intel_crtc(crtc);

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 705ed80..f48986b 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3218,8 +3218,10 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc)
         */
        intel_crtc_load_lut(crtc);
 
-       if (IS_HASWELL(dev))
+       if (IS_HASWELL(dev)) {
+               intel_ddi_set_pipe_settings(crtc);
                intel_ddi_enable_pipe_func(crtc);
+       }
 
        intel_enable_pipe(dev_priv, pipe, is_pch_port);
        intel_enable_plane(dev_priv, plane, pipe);

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 7e1e670..ed75a36 100644 (file)
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -597,5 +597,6 @@ extern bool intel_ddi_pll_mode_set(struct drm_crtc *crtc, int clock);
 extern void intel_ddi_pre_enable(struct intel_encoder *intel_encoder);
 extern void intel_ddi_post_disable(struct intel_encoder *intel_encoder);
 extern void intel_ddi_put_crtc_pll(struct drm_crtc *crtc);
+extern void intel_ddi_set_pipe_settings(struct drm_crtc *crtc);
 
 #endif /* __INTEL_DRV_H__ */