Attachment 41376 Details for Bug 32556 – add new pll flag

[patch] add new pll flag

0001-drm-radeon-kms-add-new-PREFER_CLOSEST_HIGHER-pll-fla.patch (text/plain), 1.89 KB, created by Alex Deucher on 2010-12-22 11:26:01 UTC

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Creator: Alex Deucher

Created: 2010-12-22 11:26:01 UTC

Size: 1.89 KB

patch

obsolete

>From 63cc8451cd4f38be2003efff1e085449700fe064 Mon Sep 17 00:00:00 2001
>From: Alex Deucher <alexdeucher@gmail.com>
>Date: Wed, 22 Dec 2010 14:20:43 -0500
>Subject: [PATCH] drm/radeon/kms: add new PREFER_CLOSEST_HIGHER pll flag
>
>Partner to the existing PREFER_CLOSEST_LOWER.  A new flag
>to prefer slightly higher target frequencies if the target
>cannot be hit exactly.
>
>Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
>---
> drivers/gpu/drm/radeon/radeon_display.c |    5 +++++
> drivers/gpu/drm/radeon/radeon_mode.h    |    5 +++--
> 2 files changed, 8 insertions(+), 2 deletions(-)
>
>diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
>index 3bca929..d40885e 100644
>--- a/drivers/gpu/drm/radeon/radeon_display.c
>+++ b/drivers/gpu/drm/radeon/radeon_display.c
>@@ -909,6 +909,11 @@ void radeon_compute_pll(struct radeon_pll *pll,
> 							error = 0xffffffff;
> 						else
> 							error = freq - current_freq;
>+					} else if (pll->flags & RADEON_PLL_PREFER_CLOSEST_HIGHER) {
>+						if (freq > current_freq)
>+							error = 0xffffffff;
>+						else
>+							error = current_freq - freq;
> 					} else
> 						error = abs(current_freq - freq);
> 					vco_diff = abs(vco - best_vco);
>diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h
>index 12bdeab..61473fa 100644
>--- a/drivers/gpu/drm/radeon/radeon_mode.h
>+++ b/drivers/gpu/drm/radeon/radeon_mode.h
>@@ -147,8 +147,9 @@ struct radeon_tmds_pll {
> #define RADEON_PLL_PREFER_HIGH_POST_DIV (1 << 9)
> #define RADEON_PLL_USE_FRAC_FB_DIV      (1 << 10)
> #define RADEON_PLL_PREFER_CLOSEST_LOWER (1 << 11)
>-#define RADEON_PLL_USE_POST_DIV         (1 << 12)
>-#define RADEON_PLL_IS_LCD               (1 << 13)
>+#define RADEON_PLL_PREFER_CLOSEST_HIGHER (1 << 12)
>+#define RADEON_PLL_USE_POST_DIV         (1 << 13)
>+#define RADEON_PLL_IS_LCD               (1 << 14)
> 
> struct radeon_pll {
> 	/* reference frequency */
>-- 
>1.7.1.1
>

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Attachments on bug 32556: 41344 | 41345 | 41346 | 41347 | 41348 | 41351 | 41376 | 41379 | 41380 | 41406 | 41407 | 41408 | 41430 | 41852 | 41943

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