From: Paul Walmsley <paul@pwsan.com>
To: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH 11/12] ARM: OMAP2xxx: powerdomain: add previous power state tracking
Date: Sun, 09 Dec 2012 13:03:31 -0700 [thread overview]
Message-ID: <20121209200330.3196.10124.stgit@dusk.lan> (raw)
In-Reply-To: <20121209200108.3196.12452.stgit@dusk.lan>
The OMAP2xxx PRM does support a form of powerdomain previous-power-state
tracking; so add it. This allows the power state tracking and debugging
code to do something useful on this platform.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
arch/arm/mach-omap2/prm2xxx.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/arm/mach-omap2/prm2xxx.c b/arch/arm/mach-omap2/prm2xxx.c
index e4cdb69..2d3c905 100644
--- a/arch/arm/mach-omap2/prm2xxx.c
+++ b/arch/arm/mach-omap2/prm2xxx.c
@@ -180,10 +180,22 @@ static int omap2xxx_pwrdm_read_pwrst(struct powerdomain *pwrdm)
return omap2xxx_pwrst_to_common_pwrst(omap2xxx_pwrst);
}
+static int omap2xxx_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
+{
+ u8 omap2xxx_pwrst;
+
+ omap2xxx_pwrst = omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ OMAP2_PM_PWSTST,
+ OMAP24XX_LASTSTATEENTERED_MASK);
+
+ return omap2xxx_pwrst_to_common_pwrst(omap2xxx_pwrst);
+}
+
struct pwrdm_ops omap2_pwrdm_operations = {
.pwrdm_set_next_pwrst = omap2xxx_pwrdm_set_next_pwrst,
.pwrdm_read_next_pwrst = omap2xxx_pwrdm_read_next_pwrst,
.pwrdm_read_pwrst = omap2xxx_pwrdm_read_pwrst,
+ .pwrdm_read_prev_pwrst = omap2xxx_pwrdm_read_prev_pwrst,
.pwrdm_set_logic_retst = omap2_pwrdm_set_logic_retst,
.pwrdm_set_mem_onst = omap2_pwrdm_set_mem_onst,
.pwrdm_set_mem_retst = omap2_pwrdm_set_mem_retst,
WARNING: multiple messages have this Message-ID (diff)
From: paul@pwsan.com (Paul Walmsley)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 11/12] ARM: OMAP2xxx: powerdomain: add previous power state tracking
Date: Sun, 09 Dec 2012 13:03:31 -0700 [thread overview]
Message-ID: <20121209200330.3196.10124.stgit@dusk.lan> (raw)
In-Reply-To: <20121209200108.3196.12452.stgit@dusk.lan>
The OMAP2xxx PRM does support a form of powerdomain previous-power-state
tracking; so add it. This allows the power state tracking and debugging
code to do something useful on this platform.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
arch/arm/mach-omap2/prm2xxx.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/arch/arm/mach-omap2/prm2xxx.c b/arch/arm/mach-omap2/prm2xxx.c
index e4cdb69..2d3c905 100644
--- a/arch/arm/mach-omap2/prm2xxx.c
+++ b/arch/arm/mach-omap2/prm2xxx.c
@@ -180,10 +180,22 @@ static int omap2xxx_pwrdm_read_pwrst(struct powerdomain *pwrdm)
return omap2xxx_pwrst_to_common_pwrst(omap2xxx_pwrst);
}
+static int omap2xxx_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
+{
+ u8 omap2xxx_pwrst;
+
+ omap2xxx_pwrst = omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ OMAP2_PM_PWSTST,
+ OMAP24XX_LASTSTATEENTERED_MASK);
+
+ return omap2xxx_pwrst_to_common_pwrst(omap2xxx_pwrst);
+}
+
struct pwrdm_ops omap2_pwrdm_operations = {
.pwrdm_set_next_pwrst = omap2xxx_pwrdm_set_next_pwrst,
.pwrdm_read_next_pwrst = omap2xxx_pwrdm_read_next_pwrst,
.pwrdm_read_pwrst = omap2xxx_pwrdm_read_pwrst,
+ .pwrdm_read_prev_pwrst = omap2xxx_pwrdm_read_prev_pwrst,
.pwrdm_set_logic_retst = omap2_pwrdm_set_logic_retst,
.pwrdm_set_mem_onst = omap2_pwrdm_set_mem_onst,
.pwrdm_set_mem_retst = omap2_pwrdm_set_mem_retst,
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 ` [PATCH 05/12] ARM: OMAP2+: powerdomain: remove some redundant checks; add some notes Paul Walmsley
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 ` Paul Walmsley [this message]
2012-12-09 20:03 ` [PATCH 11/12] ARM: OMAP2xxx: powerdomain: add previous power state tracking 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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