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Improve the DISPC debug print for scaling.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The current driver does both x and y decimation on OMAP3 DSS. Testing
shows that x decimation rarely works, leading to underflows.
The exact reason for this is unclear, as the underflows seem to happen
even with low pixel clock rates, and I would presume that if the DSS can
manage a display with 140MHz pixel clock, it could manage x decimation
with factor 2 with a low pixel clock (~30MHz).
So it is possible that there is a problem somewhere else, in memory
management, or DSS DMA, or similar. I have not found anything that would
help this.
So, to fix the downscaling scaling, this patch removes x decimation for
OMAP3. This will limit some of the more demanding downscaling scenarios,
but one could argue that using DSS to downscale such a large amount is
insane in the first place, as the produced image is rather bad quality.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The DISPC's scaling code seems to presume that decimation always
succeeds, and so we always do find a suitable downscaling setup.
However, this is not the case, and the algorithm can fail.
When that happens, the code just proceeds with wrong results, causing
issues later.
Add the necessary checks to bail out if the scaling algorithm failed.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The DISPC driver uses 64 bit arithmetic to calculate the required clock
rate for scaling. The code does not seem to work correctly, and instead
calculates with 32 bit numbers, giving wrong result.
Fix the code by typecasting values to u64 first, so that the
calculations do happen in 64 bits.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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pixel_inc and row_inc work differently on OMAP2/3 and OMAP4+ DSS. On
OMAP2/3 DSS, the pixel_inc is _not_ added by the HW at the end of the
line, after the last pixel, whereas on OMAP4+ it is.
The driver currently works for OMAP4+, but does not handle OMAP2/3
correctly, which leads to tilted image when row_inc is used.
This patch adds a flag to DISPC driver so that the pixel_inc is added
when required.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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On OMAP3/AM43xx some scaling factors cause underflows/synclosts. After
studying this, I found that sometimes the driver uses three-tap scaling
with downscaling factor smaller than x0.5. This causes issues, as x0.5
is the limit for three-tap scaling.
The driver has FEAT_PARAM_DOWNSCALE parameter, but that seems to be for
five-tap scaling, which allows scaling down to x0.25.
This patch adds checks for both horizontal and vertical scaling. For
horizontal the HW always uses 5 taps, so the limit is x0.25.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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After calculating the required decimation for scaling, the dispc driver
checks once more if the resulting configuration is valid by calling
check_horiz_timing_omap3().
Earlier calls to this function have correctly used in_width and
in_height as parameters, but the last call uses width and height. This
causes the driver to possibly reject scaling that would work.
This patch fixes the parameters.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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DISPC needs even input buffer width for YUV modes. The DISPC driver
doesn't check this at the moment (although omapdrm does), but worse,
when DISPC driver does x predecimation the result may be uneven. This
causes sometimes sync losts, underflows, or just visual errors.
This patch makes DISPC driver return an error if the user gives uneven
input width for a YUV buffer. It also makes the input width even in case
of predecimation.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Errata i631 description:
"When in YUV4:2:0 format in 1D burst, the DISPC DMA skips lines when
fetching Chroma sampling."
Workaround:
"If YUV4:2:0-1D burst is required: Set
DISPC_VIDp_ATTRIBUTES[22]DOUBLESTRIDE to 0x0 and
DISPC_VIDp_ATTRIBUTES[13:12]ROTATION to 0x1 or 0x3"
The description is somewhat confusing, but testing has shown that DSS
fetches extra rows from memory when using NV12 format in 1D mode. If the
memory after the framebuffer is inaccessible, this leads to OCP errors.
The driver always uses DOUBLESTRIDE=0 when using 1D mode, so we only
need to handle the ROTATION part.
The issue exist on all OMAP4 and OMAP5 based DSS IPs.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux
Pull fbdev updates from Tomi Valkeinen:
"Small fixes and improvements to various fbdev drivers"
* tag 'fbdev-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (24 commits)
omapdss: extend pm notifier to handle hibernation
OMAPDSS: Correct video ports description file path in DT binding doc
OMAPDSS: disable VT switch
fbdev: sh_mobile_lcdc: Fix destruction of uninitialized mutex
video: fbdev: sh_mobile_lcdcfb: Fix ROP3 sysfs attribute parsing
fbdev: pm3fb: cleanup some confusing indenting
hyperv: hyperv_fb: match wait_for_completion_timeout return type
video: fbdev: use msecs_to_jiffies for time conversions
fbdev: via/via_clock: fix sparse warning
video: fbdev: make of_device_id array const
fbdev: sm501fb: use memset_io
OMAPDSS: workaround for MFLAG + NV12 issue
OMAPDSS: Add support for MFLAG
OMAPDSS: setup default fifo thresholds
OMAPDSS: DISPC: lock access to DISPC_CONTROL & DISPC_CONFIG
OMAPDSS: DISPC: fix div by zero issue in overlay scaling
OMAPDSS: DISPC: change sync_pclk_edge default value
OMAPDSS: change signal_level & signal_edge enum values
OMAPDSS: DISPC: explicit handling for sync and de levels
OMAPDSS: DISPC: remove OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES
...
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Add handling of missed events in omap_dss_pm_notif which are
needed to support hibernation (suspend to disk).
Signed-off-by: Grygorii Strashko <Grygorii.Strashko@linaro.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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We don't need VT switch when suspending/resuming, so disable it. This
speeds up suspend/resume.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: NeilBrown <neil@brown.name>
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git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux
Pull devicetree changes from Grant Likely:
"Here are the devicetree changes queued up for v4.1. Nothing really
exciting here. Rob has another few commits for big-endian attached
UARTs, but those will be sent in a separate merge request since they
haven't been as thoroughly tested as this batch.
Here are the highlights:
- lots of unittest cleanup from Frank Rowand
- bugfixes and updates to the of_graph code
- tighten up of_get_mac_address() code
- documentation updates"
* tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux:
of/unittest: Fix of_platform_depopulate test case
of/unittest: early return from test skips tests
of/unittest: breadcrumbs to reduce pain of future maintainers
of/unittest: reduce checkpatch noise - line after declarations
of/unittest: typo in error string
of/unittest: add const where needed
of_net: factor out repetitive code from of_get_mac_address()
drivers/of: Add empty ranges quirk for PA-Semi
of: Allow selection of OF_DYNAMIC and OF_OVERLAY if OF_UNITTEST
of: Empty node & property flag accessors when !OF
of: Explicitly include linux/types.h in of_graph.h
dt-bindings: brcm: rationalize Broadcom documentation naming
of/unittest: replace 'selftest' with 'unittest'
Documentation: rename of_selftest.txt to of_unittest.txt
Documentation: update the of_selftest.txt
dt: OF_UNITTEST make dependency broken
MAINTAINERS: Pantelis Antoniou device tree overlay maintainer
of: Add of_graph_get_port_by_id function
of: Add for_each_endpoint_of_node helper macro
of: Decrement refcount of previous endpoint in of_graph_get_next_endpoint
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If sh_mobile_lcdc_probe() fails after the allocation of driver-private
data, but before the initialization of all channels, a warning will be
printed due to the destruction of an uninitialized mutex:
WARNING: CPU: 0 PID: 1 at kernel/locking/mutex-debug.c:116 mutex_destroy+0x5c/0x7c()
DEBUG_LOCKS_WARN_ON(mutex_is_locked(lock))
...
Backtrace:
...
[<c00425b4>] (mutex_destroy) from [<c01d5858>] (sh_mobile_lcdc_remove+0x1bc/0x230)
r4:df6a4800 r3:00000000
[<c01d569c>] (sh_mobile_lcdc_remove) from [<c01d6620>] (sh_mobile_lcdc_probe+0xd54/0xe28)
Move the initialization of the mutexes from sh_mobile_lcdc_channel_init()
to immediately after the allocation of driver-private data to fix this.
Note that the interrupt number is moved to a new variable "irq", so we
can reuse the existing variable "i" for iterating over the channels.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc into next
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for-next
Pull of-graph helpers from Philipp Zabel:
of: Add of-graph helpers to loop over endpoints and find ports by id
This series converts of_graph_get_next_endpoint to decrement the refcount of
the passed prev parameter. This allows to add a for_each_endpoint_of_node
helper macro to loop over all endpoints in a device tree node.
The of_graph_get_port_by_id function is added to retrieve a port by its known
port id (contained in the reg property) from the device tree.
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ppc has special instruction forms to efficiently load and store values
in non-native endianness. These can be accessed via the arch-specific
{ld,st}_le{16,32}() inlines in arch/powerpc/include/asm/swab.h.
However, gcc is perfectly capable of generating the byte-reversing
load/store instructions when using the normal, generic cpu_to_le*() and
le*_to_cpu() functions eaning the arch-specific functions don't have much
point.
Worse the "le" in the names of the arch specific functions is now
misleading, because they always generate byte-reversing forms, but some
ppc machines can now run a little-endian kernel.
To start getting rid of the arch-specific forms, this patch removes them
from all the old Power Macintosh drivers, replacing them with the
generic byteswappers.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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The ROP3 attribute is expressed as an integer in the 0-255 range. Remove
the wrong conversion to boolean when parsing it.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The PPC_OF is a ppc specific option which is used to mean that the
firmware device tree access functions are available. Since all the
ppc platforms have a device tree, it is aways set to 'y' for ppc.
So it makes no sense to keep a such option in the current kernel.
Replace it with PPC.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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In the current kernel, we don't need to include these arch specific
header files for ppc.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The OF functionality has moved to a common place and be used by many
archs. So we don't need to include the ppc arch specific header files
and depend on PPC_OF option any more. This is a preparation for
killing PPC_OF.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The OF functionality has moved to a common place and be used by many
archs. So we don't need to include the ppc arch specific header files
and depend on PPC_OF option any more. This is a preparation for
killing PPC_OF.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The OF functionality has moved to a common place and be used by many
archs. So we don't need to depend on PPC_OF option any more. This is
a preparation for killing PPC_OF.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The PPC_OF is a ppc specific option which is used to mean that the
firmware device tree access functions are available. Since all the
ppc platforms have a device tree, it is aways set to 'y' for ppc.
So it makes no sense to keep a such option in the current kernel.
Replace it with PPC.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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The PPC_OF is a ppc specific option which is used to mean that the
firmware device tree access functions are available. Since all the
ppc platforms have a device tree, it is aways set to 'y' for ppc.
So it makes no sense to keep a such option in the current kernel.
Replace it with PPC.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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This if statement should be pushed out one tab to line up with the rest.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The return type of wait_for_completion_timeout is unsigned long not
int. This patch fixes up the declarations only.
Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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This is only an API consolidation and should make things more readable by
replacing var * HZ / 1000 by msecs_to_jiffies(var).
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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this patch fixes following sparse warning:
via_clock.c:33:12: warning: symbol 'via_slap' was not declared. Should it be static?
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Make of_device_id array const.
Signed-off-by: Sanjeev Sharma <Sanjeev_Sharma@mentor.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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we should really be using memset_io() instead of using memset() as
this is actually io space mapped into our memory.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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It was found that having two displays enabled and having an NV12 overlay
on one of the displays will cause underflows/synclosts. Debugging this
pointed to some issue with MFLAG.
It is unclear why this issue is happening, but it looks like there is a
HW bug related to MFLAG and FIFO management. Disabling MFLAG makes this
issue go away, but then we lose the benefit of MFLAG. Also forcing MFLAG
always on makes the issue go away.
Also, using certain values for MFLAG_START, MFLAG thresholds and PRELOAD
makes the issue go away, but there was no obvious logic to which values
work and which don't.
As a workaround until more information about this is found, force MFLAG
always on to make NV12 usable.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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OMAP5 has support for MFLAG feature, which allows DSS to dynamically
increase the priority of DISPC's DMA traffic. At the moment we don't
have support for it.
It was noticed that on DRA7 with high bandwidth use cases we see FIFO
underflows. Implementing MFLAG support removed those underflows.
Interestingly, on OMAP5 uEVM no such overflows were seen.
This patch adds a simple MFLAG implementation, where we use a fixed
MFLAG threshold value based on the FIFO size. The thresholds are set to
4/8 of fifo size for low threshold, and 5/8 of fifo size for high
threshold.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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At the moment we don't setup FIFO thresholds by default in omapdss. It's
supposed to be done by the user of omapdss. And that is missing from
omapdrm, causing unoptimal thresholds to be used when using omapdrm.
While I believe it's in theory better to allow the user of omapdss to
setup the fifo thresholds, in practice we always use the same values,
and we could as well setup the thresholds in omapdss.
Furthermore, in omapdss init we always swap the FIFO used for GFX and WB
overlays, but we don't swap the FIFO thresholds for those overlays
(which is the reason for omapdrm using unoptimal HW reset values). So
it would make sense to setup the thresholds to account for the swapping
of the FIFOs.
So, this patch adds code to setup default FIFO tresholds at omapdss
init.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Dispc driver presumes that the callers handle locking for all normal
functions. However, omapdrm doesn't handle this, and presumes that all
overlay manager registers are private to that overlay manager, and thus
presumes that configurations for overlay managers can be written via
different threads freely.
For many registers the above is true. The exceptions are DISPC_CONTROL
and DISPC_CONFIG registers, which contain bits for both LCD and TV
overlay managers.
Fixing this properly in omapdrm means a big omapdrm rewrite. So, for
now, add locking to dispc for the problematic registers.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: Somnath Mukherjee <somnath@ti.com>
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omapdrm doesn't always configure the overlays correctly, causing the
overlay setup functions to be called with zero timings. This leads to
division by zero error.
This happens, for example, when a HDMI cable is not connected, but a
user tries to setup a plane with scaling.
Fixing omapdrm is a big job, so for now let's check for the bad timings
in DISPC and return an error.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The common 'struct videomode' does not have a flag to select when the
sync signals should be driven.
The default behavior of DISPC HW is to drive the sync signal on the
opposite pixel clock edge from data signal, which is also what the
videomode_to_omap_video_timings() uses.
However, it looks like what panels usually expect is that the data and
sync signals are driven on the same edge, so let's change
videomode_to_omap_video_timings() to set the sync_pclk_edge accordingly.
Note that this only affect panels drivers that use
videomode_to_omap_video_timings(), probably when getting the video
timings directly from DT data. The drivers can still configure the
sync_pclk_edge independently if they so wish.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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When configuring the lcd timings, instead of writing enum values
directly to the HW, use switch-case to get the value to be programmed.
This is safer and also allows us to change the enum values.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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DISPC can drive data lines either on rising or falling pixel clock edge,
which can be configured by the user.
Sync lines can also be driven on rising or falling pixel clock edge, but
additionally the HW can be configured to drive the sync lines on
opposite clock edge from the data lines.
This opposite edge setting does not make any sense, as the same effect
can be achieved by just setting the sync lines to be driven on the other
edge compared to the data lines. It feels like some kind of backward
compatibility option, even if all DSS versions seem to have the same
implementation.
To simplify the code and configuration of the signals, and to make the
dispc timings more compatible with what is used on other platforms,
let's just remove the whole opposite-edge support.
The drivers that used OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES setting are
changed so that they use the opposite setting from the data edge.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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TFP410 requires that DE is active high and the data and syncs are driven
on rising pixel clock edge. However, at the moment the driver doesn't
request such syncs, and the end result is that the sync settings depend
on default values, which are not right in all cases.
Set the sync values explicitly.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The DISPC driver checks that the buffer address is not 0. However, when
using TILER, the address space is TILER specific and 0 is a valid
address.
Fix the check to allow address of 0 for TILER.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: srinivas pulukuru <srinivas.pulukuru@ti.com>
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omapdss's sysfs directories for displays used to have 'name' file,
giving the name for the display. This file was later renamed to
'display_name' to avoid conflicts with i2c sysfs 'name' file. Looks like
at least xserver-xorg-video-omap3 requires the 'name' file to be
present.
To fix the regression, this patch creates new kobjects for each display,
allowing us to create sysfs directories for the displays. This way we
have the whole directory for omapdss, and there will be no sysfs file
clashes with the underlying display device's sysfs files.
We can thus add the 'name' sysfs file back.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: NeilBrown <neilb@suse.de>
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we were dereferencing edid first and the NULL check was after
accessing that. now we are using edid only if we know that
it is not NULL.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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This patch add a missing check on the return value of devm_kzalloc,
which would cause a NULL pointer dereference in a OOM situation.
Signed-off-by: Kiran Padwal <kiran.padwal@smartplayin.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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It has been observed that the current SDA-HOLD time is too short for
some board/cable/monitor combinations. Increase the SDA-HOLD time to
1000ns.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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AM43xx supports pixel clock divider of 1, just like all OMAP3+ SoCs. Fix
the minimum divider value.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Decrementing the reference count of the previous endpoint node allows to
use the of_graph_get_next_endpoint function in a for_each_... style macro.
All current users of this function that pass a non-NULL prev parameter
(that is, soc_camera and imx-drm) are changed to not decrement the passed
prev argument's refcount themselves.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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This allows those get_user_pages calls to pass FAULT_FLAG_ALLOW_RETRY to
the page fault in order to release the mmap_sem during the I/O.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andres Lagar-Cavilla <andreslc@google.com>
Cc: Peter Feiner <pfeiner@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux
Pull fbdev changes from Tomi Valkeinen:
- omapdss: add DRA7xxx SoC support
- fbdev: support DMT (Display Monitor Timing) calculation
* tag 'fbdev-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (40 commits)
omapfb: Return error code when applying overlay settings fails
OMAPDSS: DPI: DRA7xx support
OMAPDSS: HDMI: Add DRA7xx support
OMAPDSS: DISPC: program dispc polarities to control module
OMAPDSS: DISPC: Add DRA7xx support
OMAPDSS: Add Video PLLs for DRA7xx
OMAPDSS: Add functions for external control of PLL
OMAPDSS: DSS: Add DRA7xx base support
Doc/DT: Add DT binding doc for DRA7xx DSS
OMAPDSS: add define for DRA7xx HW version
OMAPDSS: encoder-tpd12s015: Fix race issue with LS_OE
OMAPDSS: OMAP5: fix digit output's allowed mgrs
OMAPDSS: constify port arrays
OMAPDSS: PLL: add dss_pll_wait_reset_done()
OMAPDSS: Add enum dss_pll_id
video: fbdev: fix sys_copyarea
video/mmpfb: allow modular build
fb: via: turn gpiolib and i2c selects into dependencies
fbdev: ssd1307fb: return proper error code if write command fails
fbdev: fix CVT vertical front and back porch values
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