From: Vasily Khoruzhick <anarsoul@gmail.com>
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/4] ARM: PXA: PXAFB: don't disable controller on cpufreq transition if overlay is in use
Date: Fri, 11 Mar 2011 09:20:50 +0000 [thread overview]
Message-ID: <1299835250-11095-4-git-send-email-anarsoul@gmail.com> (raw)
In-Reply-To: <1299835250-11095-1-git-send-email-anarsoul@gmail.com>
It's not safe to disable controller if overlay(s) is enabled (results in
system hang). So we avoid to disable controller in this case. Userspace
should choose proper governor to avoid freq changing when overlay is in
use, otherwise LCD may blink.
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
---
drivers/video/pxafb.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index a3bdcc1..a2e5b51 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -1648,7 +1648,8 @@ pxafb_freq_transition(struct notifier_block *nb, unsigned long val, void *data)
switch (val) {
case CPUFREQ_PRECHANGE:
- set_ctrlr_state(fbi, C_DISABLE_CLKCHANGE);
+ if (!fbi->overlay[0].usage && !fbi->overlay[1].usage)
+ set_ctrlr_state(fbi, C_DISABLE_CLKCHANGE);
break;
case CPUFREQ_POSTCHANGE:
--
1.7.4.1
next prev parent reply other threads:[~2011-03-11 9:20 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-02 20:46 [PATCH] ARM: PXA: Make PXA27x/PXA3xx overlay actually work Vasily Khoruzhick
2011-02-13 13:31 ` Russell King - ARM Linux
2011-02-15 7:35 ` Eric Miao
2011-02-15 8:41 ` Vasily Khoruzhick
2011-02-15 11:51 ` Eric Miao
2011-02-15 11:58 ` Vasily Khoruzhick
2011-02-15 13:36 ` Eric Miao
2011-02-15 13:51 ` Vasily Khoruzhick
2011-02-15 15:12 ` Eric Miao
2011-02-15 15:18 ` Vasily Khoruzhick
2011-02-17 7:43 ` [PATCH 1/2] ARM: PXA: PXAFB: Fix double-free issue Vasily Khoruzhick
2011-02-17 7:43 ` [PATCH 2/2] ARM: PXA: PXAFB: fix plane Z-ordering problem Vasily Khoruzhick
2011-02-17 11:03 ` [PATCH 1/2] ARM: PXA: PXAFB: Fix double-free issue Russell King - ARM Linux
2011-02-17 11:06 ` Vasily Khoruzhick
2011-02-20 15:02 ` [PATCH v2 1/3] " Vasily Khoruzhick
2011-02-20 15:02 ` [PATCH v2 2/3] ARM: PXA: PXAFB: Fix plane Z-ordering problem Vasily Khoruzhick
2011-02-20 15:02 ` [PATCH v2 3/3] ARM: PXA: PXAFB: Fix typo in ypos assignment Vasily Khoruzhick
2011-02-20 18:47 ` Marek Vasut
2011-02-20 18:46 ` [PATCH v2 1/3] ARM: PXA: PXAFB: Fix double-free issue Marek Vasut
2011-02-26 16:39 ` Vasily Khoruzhick
2011-03-05 22:30 ` Vasily Khoruzhick
2011-03-11 9:20 ` [PATCH 1/4] ARM: PXA: PXAFB: rework pxafb overlay memory management Vasily Khoruzhick
2011-03-11 9:20 ` [PATCH 2/4] ARM: PXA: PXAFB: Fix plane Z-ordering problem Vasily Khoruzhick
2011-03-16 13:16 ` Eric Miao
2011-03-11 9:20 ` [PATCH 3/4] ARM: PXA: PXAFB: Fix typo in ypos assignment Vasily Khoruzhick
2011-03-11 21:35 ` Marek Vasut
2011-03-16 13:15 ` Eric Miao
2011-03-11 9:20 ` Vasily Khoruzhick [this message]
2011-03-16 13:16 ` [PATCH 4/4] ARM: PXA: PXAFB: don't disable controller on cpufreq Eric Miao
2011-03-11 21:34 ` [PATCH 1/4] ARM: PXA: PXAFB: rework pxafb overlay memory management Marek Vasut
2011-03-11 21:46 ` Vasily Khoruzhick
2011-03-16 11:17 ` Eric Miao
2011-02-17 18:17 ` [PATCH 1/2] ARM: PXA: PXAFB: Fix double-free issue Marek Vasut
2011-02-17 18:56 ` Russell King - ARM Linux
2011-02-18 2:24 ` Eric Miao
2011-02-15 9:48 ` [PATCH] ARM: PXA: Make PXA27x/PXA3xx overlay actually work Russell King - ARM Linux
2011-02-15 11:43 ` Eric Miao
2011-02-18 10:07 ` Sascha Hauer
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