From: Paul Walmsley <paul@pwsan.com>
To: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: Paul Walmsley <paul@pwsan.com?>
Subject: [PATCH 05/12] ARM: OMAP2+: powerdomain: remove some redundant checks; add some notes
Date: Sun, 09 Dec 2012 13:03:24 -0700 [thread overview]
Message-ID: <20121209200322.3196.6345.stgit@dusk.lan> (raw)
In-Reply-To: <20121209200108.3196.12452.stgit@dusk.lan>
Remove some redundant tests in static functions, and add some comments
to some code that should have future attention.
Signed-off-by: Paul Walmsley <paul@pwsan.com?>
---
arch/arm/mach-omap2/powerdomain.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index 658f4ed..62e2f75 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -95,7 +95,7 @@ static int _pwrdm_register(struct powerdomain *pwrdm)
int i;
struct voltagedomain *voltdm;
- if (!pwrdm || !pwrdm->name)
+ if (!pwrdm->name)
return -EINVAL;
if (cpu_is_omap44xx() &&
@@ -528,9 +528,6 @@ static int _pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank, u8 pwrst)
{
int ret = -EINVAL;
- if (!pwrdm)
- return -EINVAL;
-
if (pwrdm->banks < (bank + 1))
return -EEXIST;
@@ -566,9 +563,6 @@ static int _pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank, u8 pwrst)
{
int ret = -EINVAL;
- if (!pwrdm)
- return -EINVAL;
-
if (pwrdm->banks < (bank + 1))
return -EEXIST;
@@ -635,6 +629,11 @@ static void _pwrdm_state_switch(struct powerdomain *pwrdm)
static int _pwrdm_pre_transition_cb(struct powerdomain *pwrdm, void *unused)
{
+ /*
+ * XXX It should be possible to avoid the clear_all_prev_pwrst
+ * call for powerdomains if we are programming them to stay on,
+ * for example.
+ */
pwrdm_clear_all_prev_pwrst(pwrdm);
_pwrdm_state_switch(pwrdm);
return 0;
@@ -1000,6 +999,11 @@ int pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
return ret;
/*
+ * XXX Is there some way for us to skip powerdomains that
+ * don't have a prev pwrst register?
+ */
+
+ /*
* XXX should get the powerdomain's current state here;
* warn & fail if it is not ON.
*/
next prev parent reply other threads:[~2012-12-09 20:05 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-09 20:02 [PATCH 00/12] ARM: OMAP2+: powerdomain updates after the functional power state conversion Paul Walmsley
2012-12-09 20:02 ` Paul Walmsley
2012-12-09 20:02 ` [PATCH 01/12] ARM: OMAP2+: powerdomain: consolidate arch_pwrdm check code Paul Walmsley
2012-12-09 20:02 ` Paul Walmsley
2012-12-09 20:03 ` [PATCH 02/12] ARM: OMAP2+: PM/powerdomain: move the power state time tracking into the powerdomain code Paul Walmsley
2012-12-09 20:03 ` Paul Walmsley
2012-12-09 20:03 ` [PATCH 03/12] ARM: OMAP2+: powerdomain: split pwrdm_state_switch() Paul Walmsley
2012-12-09 20:03 ` Paul Walmsley
2012-12-09 20:03 ` [PATCH 04/12] ARM: OMAP2+: PM: clean up some debugfs functions Paul Walmsley
2012-12-09 20:03 ` Paul Walmsley
2012-12-09 20:03 ` Paul Walmsley [this message]
2012-12-09 20:03 ` [PATCH 06/12] ARM: OMAP2+: CM: use the cached copy of the clockdomain's hwsup state Paul Walmsley
2012-12-09 20:03 ` Paul Walmsley
2012-12-09 20:03 ` [PATCH 07/12] ARM: OMAP2+: powerdomain: cache the powerdomain next power state Paul Walmsley
2012-12-09 20:03 ` Paul Walmsley
2012-12-09 20:03 ` [PATCH 08/12] ARM: OMAP2+: powerdomain: cache the powerdomain's previous " Paul Walmsley
2012-12-09 20:03 ` Paul Walmsley
2012-12-09 20:03 ` [PATCH 09/12] ARM: OMAP2+: powerdomain: skip register reads for powerdomains known to be on Paul Walmsley
2012-12-09 20:03 ` Paul Walmsley
2012-12-12 10:22 ` Vaibhav Hiremath
2012-12-12 10:22 ` Vaibhav Hiremath
2012-12-19 21:09 ` Jon Hunter
2012-12-19 21:09 ` Jon Hunter
2012-12-20 17:22 ` Paul Walmsley
2012-12-20 17:22 ` Paul Walmsley
2012-12-21 6:33 ` Santosh Shilimkar
2012-12-21 6:33 ` Santosh Shilimkar
2012-12-26 6:21 ` Bedia, Vaibhav
2012-12-26 6:21 ` Bedia, Vaibhav
2012-12-26 6:31 ` Bedia, Vaibhav
2012-12-26 6:31 ` Bedia, Vaibhav
2012-12-26 20:49 ` Paul Walmsley
2012-12-26 20:49 ` Paul Walmsley
2012-12-09 20:03 ` [PATCH 10/12] ARM: OMAP2+: powerdomain: skip previous-power-state read if next_pwrst is ON Paul Walmsley
2012-12-09 20:03 ` Paul Walmsley
2012-12-09 20:03 ` [PATCH 11/12] ARM: OMAP2xxx: powerdomain: add previous power state tracking Paul Walmsley
2012-12-09 20:03 ` Paul Walmsley
2012-12-09 20:03 ` [PATCH 12/12] ARM: OMAP2xxx: PM: add pwrdm_(pre|post)_transition() calls to the 2xxx PM code Paul Walmsley
2012-12-09 20:03 ` Paul Walmsley
2013-01-04 14:26 ` [PATCH 00/12] ARM: OMAP2+: powerdomain updates after the functional power state conversion Tero Kristo
2013-01-04 14:26 ` Tero Kristo
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