The output devices list isn't used anymore, all output devices are
accessed through the global devices list. Remove it.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The DSI clocks are dumped in the DSS-level debugfs clocks file. This
complicates the implementation as the DSI private data has to be looked
up through the outputs list. Simplify it by creating two debugfs files,
dsi1_clks and dsi2_clks, to dump the DSI clocks.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The DSI debugfs regs and irqs show handlers received a pointer to the
DSI private data. There's no need to look it up from the list of DSS
outputs. Use the pointer directly, this allows simplifying the
implementation of the handlers.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

All connectors, encoders and panels store a pointer to their input
omap_dss_device in the panel driver data structure. This duplicates the
src field in the omap_dss_device structure. Remove the private copy and
use the src field.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The encoders duplicate the same omap_dss_device src and dst fields set
and checks in their connect and disconnect handlers. Move the code to
the connect and disconnect wrappers.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

In preparation for the move of checks from the disconnect handlers to
the omapdss_device_disconnect() function, replace direct calls to the
disconnect handlers at remove time with calls to
omapdss_device_disconnect().
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The connectors, encoders and display duplicate the same debug messages
and connection checks in their omap_dss_device connect and disconnect
handlers. Move the code to the connect and disconnect wrappers.

To simplify the code the connect function returns -EBUSY unconditionally
if the device is already connected. This doesn't cause any change in
practice: the connect handler of displays is never called on a connected
device as it is only invoked during omapdrm initialization.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The omap_dss_device objects model display components and are connected
at runtime to create display pipelines. The connect and disconnect
operations implemented by each component contain lots of duplicate code.
As a first step towards fixing this, create new functions to wrap the
direct calls to those operations and use them.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The various types of omapdss_*_ops structures define multiple operations
that are not specific to a bus type. To simplify the code and remove
dependencies on specific bus types move those operations to a common
structure. Operations that are specific to a bus type are kept in the
specialized ops structures.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The omap_dss_find_output_by_port() function looks up an omap_dss_device
by port from the list of devices registered as outputs. In preparation
for looking up sinks in addition to sources, allow the function to look
up any registered device. Rename it to omap_dss_find_device_by_port() to
match its new purpose.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The omap_dss_find_output_by_port_node() function defined in output.c
looks up an output from its port node. To do so it needs to call helper
functions from dss-of.c to lookup the port parent and the port number.
As omap_dss_find_output_by_port_node() is only called by
omapdss_of_find_source_for_first_ep() from dss-of.c this goes back and
forth between the to source files and isn't very clear.

Simplify the code by passing both the parent and the port number to
omap_dss_find_output_by_port_node() instead of the port node, and rename
the function to omap_dss_find_output_by_port().
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The omapdss_component_is_loaded() function test whether a component is
loaded by checking whether it is present in the displays list or the
outputs list. Simplify the implementation by checking for the component
in the global omap_dss_device list.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The omap_dss_device instances are stored in two separate lists,
depending on whether they are panels or outputs. Create a third list
that stores all omap_dss_device instances to allow generic code to
operate on all instances.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

For coherency with the panel_list field, rename list to output_list.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The omap_dss_device panel.dsi_pix_fmt and panel.dsi_mode fields are
unused. Remove them.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The omap_dss_device structure stores a videomode. All the connector and
panel drivers that use omap_dss_device also store the videomode in their
own panel_drv_data structures. There's no need to duplicate, remove the
videomode field from omap_dss_device.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The structure contains function pointers that don't need to be modified.
Make all its instances const to improve security.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

All omap_dss_driver instances provide the get_timings operation. Remove
the default function.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The get_timings operation from DSS encoders (not to be confused with the
identically named operation in omap_dss_driver) is never called. Remove
it.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The operations are never used, remove them. If the need to set wide
screen signaling data arises later, it should be implemented by
extending the DRM bridge API.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The dpi_init_port() and sdi_init_port() functions can return errors but
their return value is ignored. This prevents both probe failures and
probe deferral from working correctly. Propagate the errors up the call
stack.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Register the omapdrm device when we know that dss device probe going
to succeed. This avoids DSS6 and DSS2 omapdrm device registration from
colliding with each other.
Signed-off-by: NJyri Sarha <jsarha@ti.com>
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The omapdss_gather_components() function walks the OF graph to create a
list of all components part of the display device. There's no need to
delay this operation until DSS bind time as we have all the information
we need at probe time.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

As ordering of the dss_devices based on DT aliases is now implemented in
omap_drm.c, there is no need to do the ordering in dss/display.c
anymore.

At the same time remove the alias member of the omap_dss_device struct
since it is no longer needed. The only place it was used is in the
omapdss_register_display() function.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Sort the dssdev array based on DT aliases.

With this change we can remove the panel ordering from dss/display.c and
have all sorting related to dssdevs in one place.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Instead of reaching back to DSS to iterate through the dss_devices every
time, use an internal array where we store the available and usable
dss_devices.

At the same time remove the omapdss_device_is_connected() check from
omap_modeset_init() as it became irrelevant: We are not adding dssdevs
if their connect failed.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

If we allocate the drm_device earlier we can just return the error code
without the need to use goto.
Do the unref of the drm_device as a last step when cleaning up. This will
make the drm_device available longer for us and makes sure that we only
free up the memory when all other cleanups have been already done.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NSebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Enabling the interrupt early, before power has been applied to the
device, can result in an interrupt being delivered too early if:

- the IOMMU shares an interrupt with a VOP
- the VOP has a pending interrupt (after a kexec, for example)

In these conditions, we end-up taking the interrupt without
the IOMMU being ready to handle the interrupt (not powered on).

Moving the interrupt request past the pm_runtime_enable() call
makes sure we can at least access the IOMMU registers. Note that
this is only a partial fix, and that the VOP interrupt will still
be screaming until the VOP driver kicks in, which advocates for
a more synchronized interrupt enabling/disabling approach.

Fixes: 0f181d3c ("iommu/rockchip: Add runtime PM support")
Reviewed-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

pm_runtime_get_if_in_use can fail: either PM has been disabled
altogether (-EINVAL), or the device hasn't been enabled yet (0).
Sadly, the Rockchip IOMMU driver tends to conflate the two things
by considering a non-zero return value as successful.

This has the consequence of hiding other bugs, so let's handle this
case throughout the driver, with a WARN_ON_ONCE so that we can try
and work out what happened.

Fixes: 0f181d3c ("iommu/rockchip: Add runtime PM support")
Reviewed-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
Signed-off-by: NOlof Johansson <olof@lixom.net>

This can be dropped with commit 771c0353
("deprecate the '__deprecated' attribute warnings entirely and for good")
now in upstream.

And we got rid of the last __deprecated use, too.
Signed-off-by: NSedat Dilek <sedat.dilek@credativ.de>
[wsa: shortened commit message to reflect the current situation]
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: NSimon Horman <horms+renesas@verge.net.au>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

The old @sunsite.dk address is no longer active, so update the references.
Signed-off-by: NPeter Korsgaard <peter@korsgaard.com>
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

There aren't any users left. Remove this callback from the 2.4 times.
Phew, finally, that took years to reach...
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>

As we now have deferred probing, we can use a custom mechanism and
finally get rid of the legacy interface from the i2c core.
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
Acked-by: NMichael Ellerman <mpe@ellerman.id.au>

Almost all files in the kernel are either plain text or UTF-8 encoded.  A
couple however are ISO_8859-1, usually just a few characters in a C
comments, for historic reasons.

This converts them all to UTF-8 for consistency.

Link: http://lkml.kernel.org/r/20180724111600.4158975-1-arnd@arndb.deSigned-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: Simon Horman <horms@verge.net.au>			[IPVS portion]
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>	[IIO]
Acked-by: Michael Ellerman <mpe@ellerman.id.au>			[powerpc]
Acked-by: NRob Herring <robh@kernel.org>
Cc: Joe Perches <joe@perches.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Rob Herring <robh+dt@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Use new return type vm_fault_t for fault handler.  For now, this is just
documenting that the function returns a VM_FAULT value rather than an
errno.  Once all instances are converted, vm_fault_t will become a
distinct type.

Ref-> 1c8f4220 ("mm: change return type to vm_fault_t")

Previously vm_insert_{pfn,mixed} returns err which driver mapped into
VM_FAULT_* type.  The new function vmf_insert_{pfn,mixed} will replace
this inefficiency by returning VM_FAULT_* type.

vmf_error() is the newly introduce inline function in 4.17-rc6.

Link: http://lkml.kernel.org/r/20180713154541.GA3345@jordon-HP-15-Notebook-PCSigned-off-by: NSouptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: NMatthew Wilcox <mawilcox@microsoft.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Also add these typos to spelling.txt so checkpatch.pl will look for them.

Link: http://lkml.kernel.org/r/88af06b9de34d870cb0afc46cfd24e0458be2575.1529471371.git.fthain@telegraphics.com.auSigned-off-by: NFinn Thain <fthain@telegraphics.com.au>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Use new return type vm_fault_t for fault handler.  For now, this is just
documenting that the function returns a VM_FAULT value rather than an
errno.  Once all instances are converted, vm_fault_t will become a
distinct type.

See 1c8f4220 ("mm: change return type to vm_fault_t") for reference.

Link: http://lkml.kernel.org/r/20180702155801.GA4010@jordon-HP-15-Notebook-PCSigned-off-by: NSouptick Joarder <jrdr.linux@gmail.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Another panel that reports "DFP 1.x compliant TMDS" but it supports 6bpc
instead of 8 bpc.

Apply 6 bpc quirk for the panel to fix it.

BugLink: https://bugs.launchpad.net/bugs/1788308
Cc: <stable@vger.kernel.org> # v4.8+
Signed-off-by: NKai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180823055332.7723-1-kai.heng.feng@canonical.com

My fix for a recursive Kconfig dependency caused another issue where the
ACPI specific options end up in the top-level menu in 'menuconfig'. This
was an unintended side-effect of having a silent option between
'menuconfig ACPI' and 'if ACPI'.

Moving the ARCH_SUPPORTS_ACPI symbol ahead of the ACPI menu solves that
problem and restores the previous presentation.
Reported-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
Fixes: 2c870e61 (arm64: fix ACPI dependencies)
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>