From: Paulo Zanoni <przanoni@gmail.com>
To: intel-gfx@lists.freedesktop.org
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Subject: [PATCH 11/14] drm/i915: set the correct eDP aux channel clock divider on DDI
Date: Thu, 18 Oct 2012 18:21:41 -0300 [thread overview]
Message-ID: <1350595304-18237-12-git-send-email-przanoni@gmail.com> (raw)
In-Reply-To: <1350595304-18237-1-git-send-email-przanoni@gmail.com>
From: Paulo Zanoni <paulo.r.zanoni@intel.com>
The cdclk frequency is not always the same, so the value here should
be adjusted to match it.
Version 2: call intel_ddi_get_cdclk_freq instead of reading
CDCLK_FREQ, because the register is just for earlier HW steppings.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
---
drivers/gpu/drm/i915/intel_ddi.c | 2 +-
drivers/gpu/drm/i915/intel_dp.c | 4 +++-
drivers/gpu/drm/i915/intel_drv.h | 1 +
3 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 08881f1..5e21bc1 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1238,7 +1238,7 @@ void intel_disable_ddi(struct intel_encoder *encoder)
/* This will be needed in the future, so leave it here for now */
}
-static int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv)
+int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv)
{
if (I915_READ(HSW_FUSE_STRAP) & HSW_CDCLK_LIMIT)
return 450;
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 244cb6a..9486f11 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -386,7 +386,9 @@ intel_dp_aux_ch(struct intel_dp *intel_dp,
* clock divider.
*/
if (is_cpu_edp(intel_dp)) {
- if (IS_VALLEYVIEW(dev))
+ if (IS_HASWELL(dev))
+ aux_clock_divider = intel_ddi_get_cdclk_freq(dev_priv) >> 1;
+ else if (IS_VALLEYVIEW(dev))
aux_clock_divider = 100;
else if (IS_GEN6(dev) || IS_GEN7(dev))
aux_clock_divider = 200; /* SNB & IVB eDP input clock at 400Mhz */
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 5bc1ddd..ed436d0 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -593,6 +593,7 @@ extern bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
extern void intel_ddi_mode_set(struct drm_encoder *encoder,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode);
+extern int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv);
extern void intel_ddi_pll_init(struct drm_device *dev);
extern void intel_ddi_enable_pipe_func(struct drm_crtc *crtc);
extern void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
--
1.7.11.4
next prev parent reply other threads:[~2012-10-18 21:22 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-18 21:21 [PATCH 00/14] Haswell eDP enablement Paulo Zanoni
2012-10-18 21:21 ` [PATCH 01/14] drm/i915: add TRANSCODER_EDP Paulo Zanoni
2012-10-18 22:00 ` Daniel Vetter
2012-10-18 21:21 ` [PATCH 02/14] drm/i915: convert PIPE_CLK_SEL to transcoder Paulo Zanoni
2012-10-18 21:21 ` [PATCH 03/14] drm/i915: convert DDI_FUNC_CTL " Paulo Zanoni
2012-10-18 21:21 ` [PATCH 04/14] drm/i915: check TRANSCODER_EDP on intel_modeset_setup_hw_state Paulo Zanoni
2012-10-18 22:02 ` Daniel Vetter
2012-10-19 19:30 ` Paulo Zanoni
2012-10-18 21:21 ` [PATCH 05/14] drm/i915: convert PIPECONF to use transcoder instead of pipe Paulo Zanoni
2012-10-18 22:23 ` Daniel Vetter
2012-10-19 18:36 ` Paulo Zanoni
2012-10-18 21:21 ` [PATCH 06/14] drm/i915: convert PIPE_MSA_MISC to transcoder Paulo Zanoni
2012-10-18 21:21 ` [PATCH 07/14] drm/i915: convert CPU M/N timings " Paulo Zanoni
2012-10-18 22:25 ` Daniel Vetter
2012-10-18 21:21 ` [PATCH 08/14] drm/i915: convert pipe timing definitions " Paulo Zanoni
2012-10-18 22:29 ` Daniel Vetter
2012-10-18 21:21 ` [PATCH 09/14] drm/i915: implement workaround for VTOTAL when using TRANSCODER_EDP Paulo Zanoni
2012-10-18 21:21 ` [PATCH 10/14] drm/i915: select the correct pipe " Paulo Zanoni
2012-10-18 21:21 ` Paulo Zanoni [this message]
2012-10-18 21:21 ` [PATCH 12/14] drm/i915: set/unset the DDI eDP backlight Paulo Zanoni
2012-10-18 21:21 ` [PATCH 13/14] drm/i915: turn the eDP DDI panel on/off Paulo Zanoni
2012-10-18 21:21 ` [PATCH 14/14] drm/i915: enable DDI eDP Paulo Zanoni
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