UPSTREAM: power-domain: Fix use of uninitialized value in dev_power_domain_ctrl

If dev_count_phandle_with_args returns 0 or another error, then pd will never
have been initialized by power_domain_ge

UPSTREAM: power-domain: Fix use of uninitialized value in dev_power_domain_ctrl

If dev_count_phandle_with_args returns 0 or another error, then pd will never
have been initialized by power_domain_get_by_index. Avoid comparing against
pd.dev in this situation.

Fixes: 3e4fcfa4bc ("power-domain: fix hang in endless loop on i.MX8")
Change-Id: Ie488774f7814b6ae4b46963195f6471b2907353b
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>

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UPSTREAM: power_domain: Add power_domain_get_by_name()

Implement power_domain_get_by_name() convenience function which parses
DT property 'power-domain-names' and looks up power domain by matching
n

UPSTREAM: power_domain: Add power_domain_get_by_name()

Implement power_domain_get_by_name() convenience function which parses
DT property 'power-domain-names' and looks up power domain by matching
name.

Change-Id: Ie127cca6c486bb51d73013f08cb1e916f0afc9eb
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>

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UPSTREAM: power-domain: Return 0 if ops unimplemented and remove empty functions

In case the ops is not implemented, return 0 in the core right away.
This is better than having multiple copies of fu

UPSTREAM: power-domain: Return 0 if ops unimplemented and remove empty functions

In case the ops is not implemented, return 0 in the core right away.
This is better than having multiple copies of functions which just
return 0 in each power domain driver. Drop all those empty functions.

Change-Id: Ib26bef39d52cca26a0ce0f9d6b23cb6ebe5d557e
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>

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UPSTREAM: power-domain: fix hang in endless loop on i.MX8

Currently when booting the kernel on i.MX8 U-Boot hangs in an
endless loop when switching off dma, connectivity or lsio power
domains during

UPSTREAM: power-domain: fix hang in endless loop on i.MX8

Currently when booting the kernel on i.MX8 U-Boot hangs in an
endless loop when switching off dma, connectivity or lsio power
domains during device removal. It hapens first when removing
gpio0 (gpio@5d080000) device, here its power domain device
'lsio_gpio0' is obtained for switching off power. Since the
obtained 'lsio_gpio0' device is removed afterwards, its power
domain is also switched off and here the parent power domain
device 'lsio_power_domain' is optained for switching off the
power. Thereafter, when the obtained 'lsio_power_domain' is
removed, device_remove() removes its first child 'lsio_gpio0'.
During this child removal the 'lsio_power_domain' device is
obtained again for switching and when removing it later,
the same child removal is repeated, so we are stuck in an
endless loop. Below is a snippet from dm tree on i.MX8QXP
for better illustration of the DM devices relationship:

Class Index Probed Driver Name
-----------------------------------------------------------
root 0 [ + ] root_driver root_driver
...
simple_bus 0 [ + ] generic_simple_bus |-- imx8qx-pm
power_doma 0 [ + ] imx8_power_domain | |-- lsio_power_domain
power_doma 1 [ + ] imx8_power_domain | | |-- lsio_gpio0
power_doma 2 [ + ] imx8_power_domain | | |-- lsio_gpio1

Do not remove a power domain device if it is a parent of the
currently controlled device.

Fixes: 52edfed65de9 ("dm: core: device: switch off power domain after device removal")
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Reported-by: Oliver Graute <oliver.graute@gmail.com>
Reported-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Tested-by: Fabio Estevam <festevam@gmail.com>

Change-Id: Ibb7913958c0c168be1e96518fe2cb0a5d82ee6c7
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>

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UPSTREAM: power-domain: Rename free() to rfree()

This function name conflicts with our desire to #define free() to
something else on sandbox. Since it deals with resources, rename it to
rfree().

Ch

UPSTREAM: power-domain: Rename free() to rfree()

This function name conflicts with our desire to #define free() to
something else on sandbox. Since it deals with resources, rename it to
rfree().

Change-Id: If045502b384266be1292bd8d3f78939dca6ec537
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>

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UPSTREAM: power: domain: Introduce dev_power_domain_off

Add dev_power_domain_off() api to disable all the power-domains
corresponding to a device

Change-Id: I2eb48f4280fc48c1a5b2b76dcdb359cfe68e82d

UPSTREAM: power: domain: Introduce dev_power_domain_off

Add dev_power_domain_off() api to disable all the power-domains
corresponding to a device

Change-Id: I2eb48f4280fc48c1a5b2b76dcdb359cfe68e82da
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>

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UPSTREAM: power: domain: add dev_power_domain_on

Add this new API to power on multiple domains attached
to a device.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Lokesh Vutla <lokeshvutl

UPSTREAM: power: domain: add dev_power_domain_on

Add this new API to power on multiple domains attached
to a device.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Changed to static inline and added a condition into C file:
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Change-Id: Ic2b3bdecb2f68ad0f257c73687c3f6b2a125fabe

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UPSTREAM: power domain: Add support for multiple powerdomains per device

There are cases where there are more than one power domain
attached to the device inorder to get the device functional.
So ad

UPSTREAM: power domain: Add support for multiple powerdomains per device

There are cases where there are more than one power domain
attached to the device inorder to get the device functional.
So add support for enabling power domain based on the index.

Change-Id: Ib57957019ab0857b5bc04eeea270adeb0026122b
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>

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