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From: ville.syrjala@linux.intel.com
To: intel-gfx@lists.freedesktop.org
Subject: [PATCH v2 06/10] drm/i915: Round to closest when computing the VGA dotclock for LPT-H
Date: Fri,  4 Dec 2015 22:20:21 +0200	[thread overview]
Message-ID: <1449260421-14243-1-git-send-email-ville.syrjala@linux.intel.com> (raw)
In-Reply-To: <1448975321-20192-7-git-send-email-ville.syrjala@linux.intel.com>

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Bspec says we should round to closest when computing the LPT-H VGA
dotclock, so let's do that.

v2: Fix typo in commit message (Paulo)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 3811bcb73229..3391ab0ca752 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3978,7 +3978,7 @@ static void lpt_program_iclkip(struct drm_crtc *crtc)
 		u32 iclk_pi_range = 64;
 		u32 desired_divisor, msb_divisor_value, pi_value;
 
-		desired_divisor = (iclk_virtual_root_freq / clock);
+		desired_divisor = DIV_ROUND_CLOSEST(iclk_virtual_root_freq, clock);
 		msb_divisor_value = desired_divisor / iclk_pi_range;
 		pi_value = desired_divisor % iclk_pi_range;
 
-- 
2.4.10

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  parent reply	other threads:[~2015-12-04 20:20 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-01 13:08 [PATCH 00/10] HSW/BDW PCH modeset fixes and stuff ville.syrjala
2015-12-01 13:08 ` [PATCH 01/10] drm/i915: Don't register the CRT connector when it's fused off ville.syrjala
2015-12-01 19:05   ` Paulo Zanoni
2015-12-01 19:18     ` Ville Syrjälä
2015-12-01 21:28   ` [PATCH v2 01/10] drm/i915: Don't register the CRT connector when it's fused off on LPT-H ville.syrjala
2015-12-01 13:08 ` [PATCH 02/10] drm/i915: Don't register CRT connectro when DDI E can't be used ville.syrjala
2015-12-01 19:13   ` Paulo Zanoni
2015-12-01 21:29   ` [PATCH v2 02/10] drm/i915: Don't register CRT connector " ville.syrjala
2015-12-01 13:08 ` [PATCH 03/10] drm/i915: Check VBT for CRT port presence on HSW/BDW ville.syrjala
2015-12-01 13:41   ` Chris Wilson
2015-12-01 13:57     ` Ville Syrjälä
2015-12-01 14:06       ` Chris Wilson
2015-12-01 14:19         ` Ville Syrjälä
2015-12-01 16:07   ` [PATCH v2 " ville.syrjala
2015-12-01 18:15     ` Ville Syrjälä
2015-12-01 19:28     ` Paulo Zanoni
2015-12-01 19:40       ` Ville Syrjälä
2015-12-01 21:31     ` [PATCH v3 " ville.syrjala
2015-12-01 13:08 ` [PATCH 04/10] drm/i915: Add "missing" break to haswell_get_ddi_pll() ville.syrjala
2015-12-01 19:34   ` Paulo Zanoni
2015-12-01 19:45     ` Ville Syrjälä
2015-12-01 21:32   ` [PATCH v2 " ville.syrjala
2015-12-02  9:29     ` Ville Syrjälä
2015-12-01 13:08 ` [PATCH 05/10] drm/i915: Disable CLKOUT_DP bending on LPT/WPT as needed ville.syrjala
2015-12-02 13:35   ` Paulo Zanoni
2015-12-03 10:03     ` Ville Syrjälä
2015-12-03 11:16       ` Paulo Zanoni
2015-12-04 20:19   ` [PATCH v2 " ville.syrjala
2015-12-07 16:54     ` Paulo Zanoni
2015-12-01 13:08 ` [PATCH 06/10] drm/i915: Round to closest when computing the VGA dotclock for LPT-H ville.syrjala
2015-12-02 13:45   ` Paulo Zanoni
2015-12-04 20:20   ` ville.syrjala [this message]
2015-12-01 13:08 ` [PATCH 07/10] drm/i915: Disable FDI after the CRT port on LPT-H ville.syrjala
2015-12-02 14:01   ` Paulo Zanoni
2015-12-03 10:14     ` Ville Syrjälä
2015-12-04 20:20   ` [PATCH v2 " ville.syrjala
2015-12-07 17:51     ` Paulo Zanoni
2015-12-07 18:57       ` Ville Syrjälä
2015-12-08 14:04         ` Ville Syrjälä
2015-12-08 14:05     ` [PATCH] " ville.syrjala
2015-12-01 13:08 ` [PATCH 08/10] drm/i915: Refactor LPT-H VGA dotclock disabling ville.syrjala
2015-12-02 16:56   ` Paulo Zanoni
2015-12-03 10:15     ` Ville Syrjälä
2015-12-04 20:21   ` [PATCH v2 " ville.syrjala
2015-12-01 13:08 ` [PATCH 09/10] drm/i915: Disable LPT-H VGA dotclock during crtc disable ville.syrjala
2015-12-02 17:02   ` Paulo Zanoni
2015-12-03 10:29     ` Ville Syrjälä
2015-12-04 20:22   ` [PATCH v2 " ville.syrjala
2015-12-01 13:08 ` [PATCH 10/10] drm/i915: Leave FDI running after failed link training on LPT-H ville.syrjala
2015-12-02 17:16   ` Paulo Zanoni
2015-12-03 10:30     ` Ville Syrjälä
2015-12-04 10:09   ` Daniel Vetter
2015-12-04 11:59     ` Ville Syrjälä
2015-12-04 20:22   ` [PATCH v2 " ville.syrjala
2015-12-08 14:32 ` [PATCH 00/10] HSW/BDW PCH modeset fixes and stuff Ville Syrjälä

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