Enables getting correct mode clock when reading pipe config
Signed-off-by: Furquan Shaikh <furquan@xxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_ddi.c | 8 ++++++++
drivers/gpu/drm/i915/intel_display.c | 9 ++++++++-
2 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 931b4bb..fa0af9b 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1269,6 +1269,7 @@ static void intel_ddi_get_config(struct intel_encoder *encoder,
struct drm_i915_private *dev_priv = encoder->base.dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
enum transcoder cpu_transcoder = intel_crtc->config.cpu_transcoder;
+ int port = intel_ddi_get_encoder_port(encoder);
u32 temp, flags = 0;
temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
@@ -1282,6 +1283,13 @@ static void intel_ddi_get_config(struct intel_encoder *encoder,
flags |= DRM_MODE_FLAG_NVSYNC;
pipe_config->adjusted_mode.flags |= flags;
+
+ if (port == PORT_A) {
+ if ((I915_READ(DP_A) & DP_PLL_FREQ_MASK) == DP_PLL_FREQ_160MHZ)
+ pipe_config->port_clock = 162000;
+ else
+ pipe_config->port_clock = 270000;
+ }
}
static void intel_ddi_destroy(struct drm_encoder *encoder)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 3e66f05..681c99a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7176,6 +7176,8 @@ static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
pipe_config->pixel_multiplier;
}
+#define div_ceil(A, B) ((A)/(B) + ((A)%(B) ? 1 : 0))
+
static void ironlake_crtc_clock_get(struct intel_crtc *crtc,
struct intel_crtc_config *pipe_config)
{
@@ -7218,7 +7220,11 @@ static void ironlake_crtc_clock_get(struct intel_crtc *crtc,
return;
clock = ((u64)link_m * (u64)link_freq * (u64)repeat);
- do_div(clock, link_n);
+ /* This is required because the value comes out to be in fraction
+ (eg. 70699.54). Need to round it up since values are compared in
+ drm_mode_equal
+ */
+ clock = div_ceil(clock, link_n);
pipe_config->adjusted_mode.clock = clock;
}
@@ -9588,6 +9594,7 @@ static void intel_init_display(struct drm_device *dev)
if (HAS_DDI(dev)) {
dev_priv->display.get_pipe_config = haswell_get_pipe_config;
+ dev_priv->display.get_clock = ironlake_crtc_clock_get;
dev_priv->display.crtc_mode_set = haswell_crtc_mode_set;
dev_priv->display.crtc_enable = haswell_crtc_enable;
dev_priv->display.crtc_disable = haswell_crtc_disable;
--
1.8.3
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