Commit Graph

10 Commits

Author SHA1 Message Date
Tomasz Figa 8a65d2365d ARM: EXYNOS: Bind devices to power domains using DT
This patch adds a way to specify bindings between devices and power
domains using device tree.

A device can be bound to particular power domain by adding a
power-domain property containing a phandle to the domain. The device
will be bound to the domain before binding a driver to it and unbound
after unbinding a driver from it.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-11-22 00:38:59 +09:00
Tomasz Figa 7add0ec0fe ARM: EXYNOS: Fix power domain name initialization
This patch adds initialization of name field in generic power domain
struct.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-11-22 00:38:58 +09:00
Tomasz Figa 2ed5f23671 ARM: EXYNOS: Detect power domain state on registration from DT
Initial state of power domains might vary on different boards and with
different bootloaders.

This patch adds detection of initial state of power domains when being
registered from DT.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-11-22 00:38:57 +09:00
Arnd Bergmann 8ab08c0c4c ARM: exynos: exynos_pm_add_dev_to_genpd may be unused
exynos_pm_add_dev_to_genpd is used if one or more out of a large
number of Kconfig symbols are enabled. However the new
exynos_defconfig selects none of those, so the function becomes
unused. Marking it so lets the compiler automatically discard
it.

Without this patch, building exynos_defconfig results in:

arch/arm/mach-exynos/pm_domains.c:118:123: warning: 'exynos_pm_add_dev_to_genpd' defined but not used [-Wunused-function]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
2012-08-10 12:27:34 +02:00
Marek Szyprowski ebc35c7262 ARM: EXYNOS: register devices in 'need_restore' state for pm_domains
Commit ca1d72f033 ('PM / Domains: Make it possible to add devices to
inactive domains') introduced possibility to add devices to inactive
power domains and added pm_genpd_dev_need_restore() function which lets
platform core to notify power domain core that the specified device must
be restored (with its runtime_resume() callback) before first use.

This patch adds the pm_genpd_dev_need_restore() call what brings back
the suspend/resume behaviour for the client devices known from the
previous power domain driver (removed by commit 91cfbd4ee0 - 'ARM:
EXYNOS: Hook up power domains to generic power domain infrastructure').
Client device drivers relay on that suspend/resume behaviour, thus this
patch fixes runtime pm operation for client devices.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-07-12 17:29:55 +09:00
Marek Szyprowski 76eb5567af ARM: EXYNOS: read initial state of power domain from hw registers
Some bootloaders disable unused power domains to reduce power
consuption. Power domain driver can easily read the actual state from
the hardware registers instead of assuming that their initial state is
always 'on'.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-07-12 17:29:54 +09:00
Shawn Guo bb13fabcca ARM: exynos: use machine specific hook for late init
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
2012-05-08 20:35:33 +08:00
Sachin Kamat 7537147710 ARM: EXYNOS: Hook up JPEG PD to generic PD infrastructure
Add JPEG power domain (PD) to generic power domain infrastructure.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-10 02:54:36 -08:00
Sachin Kamat a9e87bd936 ARM: EXYNOS: Hook up G2D PD to generic PD infrastructure
Add G2D power domain (PD) to generic power domain infrastructure.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-09 06:54:34 -08:00
Thomas Abraham 91cfbd4ee0 ARM: EXYNOS: Hook up power domains to generic power domain infrastructure
Add support for generic power domain for Exynos4 platforms and remove the
Samsung specific power domain control for Exynos4.

The generic power domain infrastructure is used to control the power domains
available on Exynos4. For non-dt platforms, the power domains are statically
instantiated. For dt platforms, the power domain nodes found in the device
tree are instantiated.

Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-01-27 15:25:49 +09:00