| Message ID | 20121209200327.3196.27686.stgit@dusk.lan |
|---|---|
| State | New |
| Headers | show |
On 12/10/2012 1:33 AM, Paul Walmsley wrote: > There's no need to determine the current power state for powerdomains > that must be on while the kernel is running. We mark these > powerdomains with a new flag, PWRDM_ACTIVE_WITH_KERNEL. Any > powerdomain marked with that flag is reported as being in the ON power > state while the kernel is running. > > Signed-off-by: Paul Walmsley <paul@pwsan.com> > Cc: Benoît Cousson <b-cousson@ti.com> > --- > arch/arm/mach-omap2/powerdomain.c | 9 ++++++--- > arch/arm/mach-omap2/powerdomain.h | 4 ++++ > arch/arm/mach-omap2/powerdomains2xxx_data.c | 2 ++ > arch/arm/mach-omap2/powerdomains33xx_data.c | 3 ++- > arch/arm/mach-omap2/powerdomains3xxx_data.c | 9 ++++++--- > arch/arm/mach-omap2/powerdomains44xx_data.c | 5 ++++- > 6 files changed, 24 insertions(+), 8 deletions(-) > > diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c > index f5e2727..a4bb0bb 100644 > --- a/arch/arm/mach-omap2/powerdomain.c > +++ b/arch/arm/mach-omap2/powerdomain.c > @@ -462,7 +462,8 @@ static int _pwrdm_read_fpwrst(struct powerdomain *pwrdm) > int pwrst, logic_pwrst, ret; > u8 fpwrst; > > - if (!_pwrdm_pwrst_can_change(pwrdm)) > + if (!_pwrdm_pwrst_can_change(pwrdm) || > + pwrdm->flags & PWRDM_ACTIVE_WITH_KERNEL) > return PWRDM_FUNC_PWRST_ON; > > pwrst = arch_pwrdm->pwrdm_read_pwrst(pwrdm); > @@ -1104,12 +1105,14 @@ bool pwrdm_has_hdwr_sar(struct powerdomain *pwrdm) > > int pwrdm_state_switch_nolock(struct powerdomain *pwrdm) > { > - int ret; > + int ret = 0; > > if (!pwrdm || !arch_pwrdm) > return -EINVAL; > > - ret = arch_pwrdm->pwrdm_wait_transition(pwrdm); > + if (!(pwrdm->flags & PWRDM_ACTIVE_WITH_KERNEL)) > + ret = arch_pwrdm->pwrdm_wait_transition(pwrdm); > + > if (!ret) > _pwrdm_state_switch(pwrdm); > > diff --git a/arch/arm/mach-omap2/powerdomain.h b/arch/arm/mach-omap2/powerdomain.h > index f4a189a..10941fd 100644 > --- a/arch/arm/mach-omap2/powerdomain.h > +++ b/arch/arm/mach-omap2/powerdomain.h > @@ -78,10 +78,14 @@ enum pwrdm_func_state { > * > * PWRDM_HAS_LOWPOWERSTATECHANGE - can transition from a sleep state > * to a lower sleep state without waking up the powerdomain > + * > + * PWRDM_ACTIVE_WITH_KERNEL - this powerdomain's current power state is > + * guaranteed to be ON whenever the kernel is running > */ > #define PWRDM_HAS_HDWR_SAR BIT(0) > #define PWRDM_HAS_MPU_QUIRK BIT(1) > #define PWRDM_HAS_LOWPOWERSTATECHANGE BIT(2) > +#define PWRDM_ACTIVE_WITH_KERNEL BIT(3) > > /* > * Powerdomain internal flags (struct powerdomain._flags) > diff --git a/arch/arm/mach-omap2/powerdomains2xxx_data.c b/arch/arm/mach-omap2/powerdomains2xxx_data.c > index 578eef8..112927f 100644 > --- a/arch/arm/mach-omap2/powerdomains2xxx_data.c > +++ b/arch/arm/mach-omap2/powerdomains2xxx_data.c > @@ -54,6 +54,7 @@ static struct powerdomain mpu_24xx_pwrdm = { > [0] = PWRSTS_ON, > }, > .voltdm = { .name = "core" }, > + .flags = PWRDM_ACTIVE_WITH_KERNEL, > }; > > static struct powerdomain core_24xx_pwrdm = { > @@ -73,6 +74,7 @@ static struct powerdomain core_24xx_pwrdm = { > [2] = PWRSTS_OFF_RET_ON, /* MEM3ONSTATE */ > }, > .voltdm = { .name = "core" }, > + .flags = PWRDM_ACTIVE_WITH_KERNEL, > }; > > > diff --git a/arch/arm/mach-omap2/powerdomains33xx_data.c b/arch/arm/mach-omap2/powerdomains33xx_data.c > index 869adb8..acb148a 100644 > --- a/arch/arm/mach-omap2/powerdomains33xx_data.c > +++ b/arch/arm/mach-omap2/powerdomains33xx_data.c > @@ -123,7 +123,8 @@ static struct powerdomain mpu_33xx_pwrdm = { > .pwrstst_offs = AM33XX_PM_MPU_PWRSTST_OFFSET, > .pwrsts = PWRSTS_OFF_RET_ON, > .pwrsts_logic_ret = PWRSTS_OFF_RET, > - .flags = PWRDM_HAS_LOWPOWERSTATECHANGE, > + .flags = (PWRDM_HAS_LOWPOWERSTATECHANGE | > + PWRDM_ACTIVE_WITH_KERNEL), This needs to be applicable for "wkup_pwrdm" as well. Thanks, Vaibhav > .banks = 3, > .logicretstate_mask = AM33XX_LOGICRETSTATE_MASK, > .mem_on_mask = { > diff --git a/arch/arm/mach-omap2/powerdomains3xxx_data.c b/arch/arm/mach-omap2/powerdomains3xxx_data.c > index f0e14e9ef..ade93d3 100644 > --- a/arch/arm/mach-omap2/powerdomains3xxx_data.c > +++ b/arch/arm/mach-omap2/powerdomains3xxx_data.c > @@ -58,7 +58,7 @@ static struct powerdomain mpu_3xxx_pwrdm = { > .prcm_offs = MPU_MOD, > .pwrsts = PWRSTS_OFF_RET_ON, > .pwrsts_logic_ret = PWRSTS_OFF_RET, > - .flags = PWRDM_HAS_MPU_QUIRK, > + .flags = (PWRDM_HAS_MPU_QUIRK | PWRDM_ACTIVE_WITH_KERNEL), > .banks = 1, > .pwrsts_mem_ret = { > [0] = PWRSTS_OFF_RET, > @@ -74,7 +74,7 @@ static struct powerdomain mpu_am35x_pwrdm = { > .prcm_offs = MPU_MOD, > .pwrsts = PWRSTS_ON, > .pwrsts_logic_ret = PWRSTS_ON, > - .flags = PWRDM_HAS_MPU_QUIRK, > + .flags = (PWRDM_HAS_MPU_QUIRK | PWRDM_ACTIVE_WITH_KERNEL), > .banks = 1, > .pwrsts_mem_ret = { > [0] = PWRSTS_ON, > @@ -110,6 +110,7 @@ static struct powerdomain core_3xxx_pre_es3_1_pwrdm = { > [1] = PWRSTS_OFF_RET_ON, /* MEM2ONSTATE */ > }, > .voltdm = { .name = "core" }, > + .flags = PWRDM_ACTIVE_WITH_KERNEL, > }; > > static struct powerdomain core_3xxx_es3_1_pwrdm = { > @@ -121,7 +122,8 @@ static struct powerdomain core_3xxx_es3_1_pwrdm = { > * Setting the SAR flag for errata ID i478 which applies > * to 3430 <= ES3.1 > */ > - .flags = PWRDM_HAS_HDWR_SAR, /* for USBTLL only */ > + .flags = (PWRDM_HAS_HDWR_SAR | /* for USBTLL only */ > + PWRDM_ACTIVE_WITH_KERNEL), > .banks = 2, > .pwrsts_mem_ret = { > [0] = PWRSTS_OFF_RET, /* MEM1RETSTATE */ > @@ -149,6 +151,7 @@ static struct powerdomain core_am35x_pwrdm = { > [1] = PWRSTS_ON, /* MEM2ONSTATE */ > }, > .voltdm = { .name = "core" }, > + .flags = PWRDM_ACTIVE_WITH_KERNEL, > }; > > static struct powerdomain dss_pwrdm = { > diff --git a/arch/arm/mach-omap2/powerdomains44xx_data.c b/arch/arm/mach-omap2/powerdomains44xx_data.c > index 704664c..b64213c 100644 > --- a/arch/arm/mach-omap2/powerdomains44xx_data.c > +++ b/arch/arm/mach-omap2/powerdomains44xx_data.c > @@ -53,7 +53,8 @@ static struct powerdomain core_44xx_pwrdm = { > [3] = PWRSTS_ON, /* ducati_l2ram */ > [4] = PWRSTS_ON, /* ducati_unicache */ > }, > - .flags = PWRDM_HAS_LOWPOWERSTATECHANGE, > + .flags = (PWRDM_HAS_LOWPOWERSTATECHANGE | > + PWRDM_ACTIVE_WITH_KERNEL), > }; > > /* gfx_44xx_pwrdm: 3D accelerator power domain */ > @@ -164,6 +165,7 @@ static struct powerdomain cpu0_44xx_pwrdm = { > .pwrsts_mem_on = { > [0] = PWRSTS_ON, /* cpu0_l1 */ > }, > + .flags = PWRDM_ACTIVE_WITH_KERNEL, > }; > > /* cpu1_44xx_pwrdm: MPU1 processor and Neon coprocessor power domain */ > @@ -218,6 +220,7 @@ static struct powerdomain mpu_44xx_pwrdm = { > [1] = PWRSTS_ON, /* mpu_l2 */ > [2] = PWRSTS_ON, /* mpu_ram */ > }, > + .flags = PWRDM_ACTIVE_WITH_KERNEL, > }; > > /* ivahd_44xx_pwrdm: IVA-HD power domain */ > > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel >
Hi Paul, On 12/09/2012 02:03 PM, Paul Walmsley wrote: > There's no need to determine the current power state for powerdomains > that must be on while the kernel is running. We mark these > powerdomains with a new flag, PWRDM_ACTIVE_WITH_KERNEL. Any > powerdomain marked with that flag is reported as being in the ON power > state while the kernel is running. > > Signed-off-by: Paul Walmsley <paul@pwsan.com> > Cc: Benoît Cousson <b-cousson@ti.com> > --- > arch/arm/mach-omap2/powerdomain.c | 9 ++++++--- > arch/arm/mach-omap2/powerdomain.h | 4 ++++ > arch/arm/mach-omap2/powerdomains2xxx_data.c | 2 ++ > arch/arm/mach-omap2/powerdomains33xx_data.c | 3 ++- > arch/arm/mach-omap2/powerdomains3xxx_data.c | 9 ++++++--- > arch/arm/mach-omap2/powerdomains44xx_data.c | 5 ++++- > 6 files changed, 24 insertions(+), 8 deletions(-) [snip] > diff --git a/arch/arm/mach-omap2/powerdomains44xx_data.c b/arch/arm/mach-omap2/powerdomains44xx_data.c > index 704664c..b64213c 100644 > --- a/arch/arm/mach-omap2/powerdomains44xx_data.c > +++ b/arch/arm/mach-omap2/powerdomains44xx_data.c > @@ -53,7 +53,8 @@ static struct powerdomain core_44xx_pwrdm = { > [3] = PWRSTS_ON, /* ducati_l2ram */ > [4] = PWRSTS_ON, /* ducati_unicache */ > }, > - .flags = PWRDM_HAS_LOWPOWERSTATECHANGE, > + .flags = (PWRDM_HAS_LOWPOWERSTATECHANGE | > + PWRDM_ACTIVE_WITH_KERNEL), > }; My understanding is that for OMAP4 devices, the core power domain may not be active the same time as the MPU power domain. The Cortex-A9 has the ability to access some peripherals (such as timer, McBSP) via a private bus that does not require the core domain to be active. This is a difference from OMAP3 devices, where the core would always be on with the MPU power domain. Hopefully, Benoit will chime in if I have gotten this wrong ;-) Cheers Jon
On Wed, 19 Dec 2012, Jon Hunter wrote: > My understanding is that for OMAP4 devices, the core power domain may > not be active the same time as the MPU power domain. The Cortex-A9 has > the ability to access some peripherals (such as timer, McBSP) via a > private bus that does not require the core domain to be active. This is > a difference from OMAP3 devices, where the core would always be on with > the MPU power domain. You are absolutely right and I will drop that part from this patch. - Paul
On Thursday 20 December 2012 10:52 PM, Paul Walmsley wrote: > On Wed, 19 Dec 2012, Jon Hunter wrote: > >> My understanding is that for OMAP4 devices, the core power domain may >> not be active the same time as the MPU power domain. The Cortex-A9 has >> the ability to access some peripherals (such as timer, McBSP) via a >> private bus that does not require the core domain to be active. This is >> a difference from OMAP3 devices, where the core would always be on with >> the MPU power domain. > > You are absolutely right and I will drop that part from this patch. > Just to be clear, MPU has direct path to ABE domain peripherals on OMAP4. As Jon pointed out MCBSP and few timers are put under this domain can be directly accessed by MPU without L3. ABE also can be accessed via L3 by MPU. ABE has a dual map with MPU. Regards Santosh
Hi Paul, On Mon, Dec 10, 2012 at 01:33:28, Paul Walmsley wrote: > There's no need to determine the current power state for powerdomains > that must be on while the kernel is running. We mark these > powerdomains with a new flag, PWRDM_ACTIVE_WITH_KERNEL. Any > powerdomain marked with that flag is reported as being in the ON power > state while the kernel is running. [...] > diff --git a/arch/arm/mach-omap2/powerdomains33xx_data.c b/arch/arm/mach-omap2/powerdomains33xx_data.c > index 869adb8..acb148a 100644 > --- a/arch/arm/mach-omap2/powerdomains33xx_data.c > +++ b/arch/arm/mach-omap2/powerdomains33xx_data.c > @@ -123,7 +123,8 @@ static struct powerdomain mpu_33xx_pwrdm = { > .pwrstst_offs = AM33XX_PM_MPU_PWRSTST_OFFSET, > .pwrsts = PWRSTS_OFF_RET_ON, > .pwrsts_logic_ret = PWRSTS_OFF_RET, > - .flags = PWRDM_HAS_LOWPOWERSTATECHANGE, > + .flags = (PWRDM_HAS_LOWPOWERSTATECHANGE | > + PWRDM_ACTIVE_WITH_KERNEL), In case of AM33xx, this flag should be set for PER and WKUP pwrdms also. EMIF, L3, L4 etc come under PER so this domain can't transition on an active system. PRCM and Control module come under WKUP, so the WKUP should the kernel should attempt to transition WKUP domain also. Regards, Vaibhav
On Wed, Dec 26, 2012 at 11:51:46, Bedia, Vaibhav wrote: > Hi Paul, > > On Mon, Dec 10, 2012 at 01:33:28, Paul Walmsley wrote: > > There's no need to determine the current power state for powerdomains > > that must be on while the kernel is running. We mark these > > powerdomains with a new flag, PWRDM_ACTIVE_WITH_KERNEL. Any > > powerdomain marked with that flag is reported as being in the ON power > > state while the kernel is running. > [...] > > diff --git a/arch/arm/mach-omap2/powerdomains33xx_data.c b/arch/arm/mach-omap2/powerdomains33xx_data.c > > index 869adb8..acb148a 100644 > > --- a/arch/arm/mach-omap2/powerdomains33xx_data.c > > +++ b/arch/arm/mach-omap2/powerdomains33xx_data.c > > @@ -123,7 +123,8 @@ static struct powerdomain mpu_33xx_pwrdm = { > > .pwrstst_offs = AM33XX_PM_MPU_PWRSTST_OFFSET, > > .pwrsts = PWRSTS_OFF_RET_ON, > > .pwrsts_logic_ret = PWRSTS_OFF_RET, > > - .flags = PWRDM_HAS_LOWPOWERSTATECHANGE, > > + .flags = (PWRDM_HAS_LOWPOWERSTATECHANGE | > > + PWRDM_ACTIVE_WITH_KERNEL), > > In case of AM33xx, this flag should be set for PER and WKUP pwrdms also. > EMIF, L3, L4 etc come under PER so this domain can't transition on an active > system. PRCM and Control module come under WKUP, so ... the kernel should not attempt to change the WKUP power domain state. Regards, Vaibhav
On Wed, 26 Dec 2012, Bedia, Vaibhav wrote: > In case of AM33xx, this flag should be set for PER and WKUP pwrdms also. > EMIF, L3, L4 etc come under PER so this domain can't transition on an active > system. PRCM and Control module come under WKUP, so the WKUP should the kernel > should attempt to transition WKUP domain also. Thanks - the patch has been updated to reflect this. - Paul
diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c index f5e2727..a4bb0bb 100644 --- a/arch/arm/mach-omap2/powerdomain.c +++ b/arch/arm/mach-omap2/powerdomain.c @@ -462,7 +462,8 @@ static int _pwrdm_read_fpwrst(struct powerdomain *pwrdm) int pwrst, logic_pwrst, ret; u8 fpwrst; - if (!_pwrdm_pwrst_can_change(pwrdm)) + if (!_pwrdm_pwrst_can_change(pwrdm) || + pwrdm->flags & PWRDM_ACTIVE_WITH_KERNEL) return PWRDM_FUNC_PWRST_ON; pwrst = arch_pwrdm->pwrdm_read_pwrst(pwrdm); @@ -1104,12 +1105,14 @@ bool pwrdm_has_hdwr_sar(struct powerdomain *pwrdm) int pwrdm_state_switch_nolock(struct powerdomain *pwrdm) { - int ret; + int ret = 0; if (!pwrdm || !arch_pwrdm) return -EINVAL; - ret = arch_pwrdm->pwrdm_wait_transition(pwrdm); + if (!(pwrdm->flags & PWRDM_ACTIVE_WITH_KERNEL)) + ret = arch_pwrdm->pwrdm_wait_transition(pwrdm); + if (!ret) _pwrdm_state_switch(pwrdm); diff --git a/arch/arm/mach-omap2/powerdomain.h b/arch/arm/mach-omap2/powerdomain.h index f4a189a..10941fd 100644 --- a/arch/arm/mach-omap2/powerdomain.h +++ b/arch/arm/mach-omap2/powerdomain.h @@ -78,10 +78,14 @@ enum pwrdm_func_state { * * PWRDM_HAS_LOWPOWERSTATECHANGE - can transition from a sleep state * to a lower sleep state without waking up the powerdomain + * + * PWRDM_ACTIVE_WITH_KERNEL - this powerdomain's current power state is + * guaranteed to be ON whenever the kernel is running */ #define PWRDM_HAS_HDWR_SAR BIT(0) #define PWRDM_HAS_MPU_QUIRK BIT(1) #define PWRDM_HAS_LOWPOWERSTATECHANGE BIT(2) +#define PWRDM_ACTIVE_WITH_KERNEL BIT(3) /* * Powerdomain internal flags (struct powerdomain._flags) diff --git a/arch/arm/mach-omap2/powerdomains2xxx_data.c b/arch/arm/mach-omap2/powerdomains2xxx_data.c index 578eef8..112927f 100644 --- a/arch/arm/mach-omap2/powerdomains2xxx_data.c +++ b/arch/arm/mach-omap2/powerdomains2xxx_data.c @@ -54,6 +54,7 @@ static struct powerdomain mpu_24xx_pwrdm = { [0] = PWRSTS_ON, }, .voltdm = { .name = "core" }, + .flags = PWRDM_ACTIVE_WITH_KERNEL, }; static struct powerdomain core_24xx_pwrdm = { @@ -73,6 +74,7 @@ static struct powerdomain core_24xx_pwrdm = { [2] = PWRSTS_OFF_RET_ON, /* MEM3ONSTATE */ }, .voltdm = { .name = "core" }, + .flags = PWRDM_ACTIVE_WITH_KERNEL, }; diff --git a/arch/arm/mach-omap2/powerdomains33xx_data.c b/arch/arm/mach-omap2/powerdomains33xx_data.c index 869adb8..acb148a 100644 --- a/arch/arm/mach-omap2/powerdomains33xx_data.c +++ b/arch/arm/mach-omap2/powerdomains33xx_data.c @@ -123,7 +123,8 @@ static struct powerdomain mpu_33xx_pwrdm = { .pwrstst_offs = AM33XX_PM_MPU_PWRSTST_OFFSET, .pwrsts = PWRSTS_OFF_RET_ON, .pwrsts_logic_ret = PWRSTS_OFF_RET, - .flags = PWRDM_HAS_LOWPOWERSTATECHANGE, + .flags = (PWRDM_HAS_LOWPOWERSTATECHANGE | + PWRDM_ACTIVE_WITH_KERNEL), .banks = 3, .logicretstate_mask = AM33XX_LOGICRETSTATE_MASK, .mem_on_mask = { diff --git a/arch/arm/mach-omap2/powerdomains3xxx_data.c b/arch/arm/mach-omap2/powerdomains3xxx_data.c index f0e14e9ef..ade93d3 100644 --- a/arch/arm/mach-omap2/powerdomains3xxx_data.c +++ b/arch/arm/mach-omap2/powerdomains3xxx_data.c @@ -58,7 +58,7 @@ static struct powerdomain mpu_3xxx_pwrdm = { .prcm_offs = MPU_MOD, .pwrsts = PWRSTS_OFF_RET_ON, .pwrsts_logic_ret = PWRSTS_OFF_RET, - .flags = PWRDM_HAS_MPU_QUIRK, + .flags = (PWRDM_HAS_MPU_QUIRK | PWRDM_ACTIVE_WITH_KERNEL), .banks = 1, .pwrsts_mem_ret = { [0] = PWRSTS_OFF_RET, @@ -74,7 +74,7 @@ static struct powerdomain mpu_am35x_pwrdm = { .prcm_offs = MPU_MOD, .pwrsts = PWRSTS_ON, .pwrsts_logic_ret = PWRSTS_ON, - .flags = PWRDM_HAS_MPU_QUIRK, + .flags = (PWRDM_HAS_MPU_QUIRK | PWRDM_ACTIVE_WITH_KERNEL), .banks = 1, .pwrsts_mem_ret = { [0] = PWRSTS_ON, @@ -110,6 +110,7 @@ static struct powerdomain core_3xxx_pre_es3_1_pwrdm = { [1] = PWRSTS_OFF_RET_ON, /* MEM2ONSTATE */ }, .voltdm = { .name = "core" }, + .flags = PWRDM_ACTIVE_WITH_KERNEL, }; static struct powerdomain core_3xxx_es3_1_pwrdm = { @@ -121,7 +122,8 @@ static struct powerdomain core_3xxx_es3_1_pwrdm = { * Setting the SAR flag for errata ID i478 which applies * to 3430 <= ES3.1 */ - .flags = PWRDM_HAS_HDWR_SAR, /* for USBTLL only */ + .flags = (PWRDM_HAS_HDWR_SAR | /* for USBTLL only */ + PWRDM_ACTIVE_WITH_KERNEL), .banks = 2, .pwrsts_mem_ret = { [0] = PWRSTS_OFF_RET, /* MEM1RETSTATE */ @@ -149,6 +151,7 @@ static struct powerdomain core_am35x_pwrdm = { [1] = PWRSTS_ON, /* MEM2ONSTATE */ }, .voltdm = { .name = "core" }, + .flags = PWRDM_ACTIVE_WITH_KERNEL, }; static struct powerdomain dss_pwrdm = { diff --git a/arch/arm/mach-omap2/powerdomains44xx_data.c b/arch/arm/mach-omap2/powerdomains44xx_data.c index 704664c..b64213c 100644 --- a/arch/arm/mach-omap2/powerdomains44xx_data.c +++ b/arch/arm/mach-omap2/powerdomains44xx_data.c @@ -53,7 +53,8 @@ static struct powerdomain core_44xx_pwrdm = { [3] = PWRSTS_ON, /* ducati_l2ram */ [4] = PWRSTS_ON, /* ducati_unicache */ }, - .flags = PWRDM_HAS_LOWPOWERSTATECHANGE, + .flags = (PWRDM_HAS_LOWPOWERSTATECHANGE | + PWRDM_ACTIVE_WITH_KERNEL), }; /* gfx_44xx_pwrdm: 3D accelerator power domain */ @@ -164,6 +165,7 @@ static struct powerdomain cpu0_44xx_pwrdm = { .pwrsts_mem_on = { [0] = PWRSTS_ON, /* cpu0_l1 */ }, + .flags = PWRDM_ACTIVE_WITH_KERNEL, }; /* cpu1_44xx_pwrdm: MPU1 processor and Neon coprocessor power domain */ @@ -218,6 +220,7 @@ static struct powerdomain mpu_44xx_pwrdm = { [1] = PWRSTS_ON, /* mpu_l2 */ [2] = PWRSTS_ON, /* mpu_ram */ }, + .flags = PWRDM_ACTIVE_WITH_KERNEL, }; /* ivahd_44xx_pwrdm: IVA-HD power domain */
There's no need to determine the current power state for powerdomains that must be on while the kernel is running. We mark these powerdomains with a new flag, PWRDM_ACTIVE_WITH_KERNEL. Any powerdomain marked with that flag is reported as being in the ON power state while the kernel is running. Signed-off-by: Paul Walmsley <paul@pwsan.com> Cc: Benoît Cousson <b-cousson@ti.com> --- arch/arm/mach-omap2/powerdomain.c | 9 ++++++--- arch/arm/mach-omap2/powerdomain.h | 4 ++++ arch/arm/mach-omap2/powerdomains2xxx_data.c | 2 ++ arch/arm/mach-omap2/powerdomains33xx_data.c | 3 ++- arch/arm/mach-omap2/powerdomains3xxx_data.c | 9 ++++++--- arch/arm/mach-omap2/powerdomains44xx_data.c | 5 ++++- 6 files changed, 24 insertions(+), 8 deletions(-)