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The whole dispc irq handling system we currently have is only needed for
compat layer, and thus can be moved from dispc.c to the compat layer.
This is quite straigtforward, but we need to add new dispc functions to
request and free the actual hardware irq: dispc_request_irq() and
dispc_free_irq().
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
We have two functions to wait for a dispc interrupt:
int omap_dispc_wait_for_irq_timeout(u32 irqmask, unsigned long timeout);
int omap_dispc_wait_for_irq_interruptible_timeout(u32 irqmask,
Of these, the former is not used at all, and can be removed. The latter
is only used by the compat layer, and can be moved to the compat layer
code.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
dispc_mgr_enable_sync and dispc_mgr_disable_sync are only used with the
compat mode. Non-compat will use the simpler enable and disable
functions.
This patch moves the synchronous enable/disable code to the compat
layer. A new file is created, dispc-compat.c, which contains low level
dispc compat code (versus apply.c, which contains slightly higher level
compat code).
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Some of the output drivers need to handle FRAMEDONE interrupt from
DISPC. This creates a direct dependency to dispc code, and we need to
avoid this to make the compat code to work.
Instead of the output drivers registering for dispc interrupts, we
create new mgr-ops that are used to register a framedone handler. The
code implementing the mgr-ops is responsible for calling the handler
when DISPC FRAMEDONE interrupt happens. The compat layer is improved
accordingly to do the call to the framedone handler.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
The output drivers need some operations from the overlay managers, like
enable and set_timings. These will affect the dispc registers, and need
to be synchronized with the composition-side changes with overlays and
overlay managers.
We want to handle these calls in the apply.c in the compatibility mode,
but when in non-compat mode, the calls need to be handled by some other
component (e.g. omapdrm).
To make this possible, this patch creates a set of function pointers in
a dss_mgr_ops struct, that is used to redirect the calls into the
correct destination.
The non-compat users can install their mgr ops with
dss_install_mgr_ops() function.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Most of the functions that are assigned to the fields in ovl struct are
in apply.c. By moving the function pointer setup into apply.c we can
make these functions static.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Most of the functions that are assigned to the fields in ovl-mgr struct
are in apply.c. By moving the function pointer setup into apply.c we can
make these functions static.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Overlay and overlay_manager structs will only be needed in the compat
mode.
This patch moves initialization of overlay and overlay_manager structs
to apply.c, so that they are handled in omapdss_compat_init().
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Add two new exported functions, omapdss_compat_init and
omapdss_compat_uninit, which are to be used by omapfb, omap_vout to
enable compatibility mode for omapdss. The functions are called by
omapdss internally for now, and moved to other drivers later.
The compatibility mode is implemented fully in the following patches.
For now, enabling compat mode only sets up the private data in apply.c.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Commit 5d89bcc341771d95e3a2996218e5949a6627f59e (OMAPDSS: remove initial
display code from omapdss) moved setting up the initial overlay, overlay
manager, output and display connections from omapdss to omapfb.
However, currently omapfb only handles the connection related to the
default display, which means that no overlay managers are connected to
other displays.
This patch changes omapfb to go through all dssdevs, and connect an
overlay manager to them.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
We currently attach an output to a dssdev in the initialization code for
dssdevices in display.c. This works, but doesn't quite make sense: an
output entity represents (surprisingly) an output of DSS, which is
managed by an output driver. The output driver also handles adding new
dssdev's for that particular output.
It makes more sense to make the output-dssdev connection in the output
driver. This is also in line with common display framework.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
omapfb gives a WARN_ONCE if a predefined physical address is given for
allocating the framebuffer memory, as this is not currently supported.
However, the same warning happens if omapfb fails to allocate memory
during runtime, as when the allocation has failed, omapfb tries to
re-allocate the old memory with the physical address of the old memory
area.
Remove the warning from omapfb_alloc_fbmem, as it serves no purpose on
the failure case above, and move it to omapfb_parse_vram_param, so that
we only warn if physical address is given via omapfb module parameters.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Kernel lock verification code has lately detected possible circular
locking in omapfb. The exact problem is unclear, but omapfb's current
locking seems to be overly complex.
This patch simplifies the locking in the following ways:
- Remove explicit omapfb mem region locking. I couldn't figure out the
need for this, as long as we take care to take omapfb lock.
- Get omapfb lock always, even if the operation is possibly only related
to one fb_info. Better safe than sorry, and normally there's only one
user for the fb so this shouldn't matter.
- Make sure fb_info lock is taken first, then omapfb lock.
With this patch the warnings about possible circular locking does not
happen anymore.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Currently omapfb_realloc_fbmem() calls dssdev->sync to ensure any
possible frame update is finished. This patch moves the call to
dssdev->sync from omapfb_realloc_fbmem to the callers of
omapfb_realloc_fbmem.
This keeps dssdev related calls out from omapfb_realloc_fbmem, which
makes sense as the function should only deal with fb memory. Also, this
seems to avoid a lockdep warning about possible circular locking.
However, the exact reason for that warning is still unclear.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
omapfb contains an exported omapfb_update_window function, which, at
some point in history, was used by a closed source SGX driver. This was
a hack even then, and should not be needed anymore. So remove it.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
The revision check fails for the beaglebone; Add new revision ID.
Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Acked-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
enabled. Unfortunately the DMA header patch had to be redone
to avoid adding new multiplatform specific include paths, the
other patches are just trivial compile fixes.
Note that this does not yet contain the necessary Kconfig
changes as we are still waiting for some drivers to get
fixed up first.
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Merge tag 'tags/omap-for-v3.8/cleanup-multiplatform-no-clock-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/pm2
From Tony Lindgren:
Remaining patches to allow omap2+ to build with multiplatform
enabled. Unfortunately the DMA header patch had to be redone
to avoid adding new multiplatform specific include paths, the
other patches are just trivial compile fixes.
Note that this does not yet contain the necessary Kconfig
changes as we are still waiting for some drivers to get
fixed up first.
* tag 'tags/omap-for-v3.8/cleanup-multiplatform-no-clock-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP: Move plat-omap/dma-omap.h to include/linux/omap-dma.h
ASoC: OMAP: mcbsp fixes for enabling ARM multiplatform support
watchdog: OMAP: fixup for ARM multiplatform support
Conflicts due to surrounding changes in:
arch/arm/mach-omap2/omap_hwmod_2420_data.c
arch/arm/mach-omap2/omap_hwmod_2430_data.c
Signed-off-by: Olof Johansson <olof@lixom.net>
Based on earlier discussions[1] we attempted to find a suitable
location for the omap DMA header in commit 2b6c4e73 (ARM: OMAP:
DMA: Move plat/dma.h to plat-omap/dma-omap.h) until the conversion
to dmaengine is complete.
Unfortunately that was before I was able to try to test compile
of the ARM multiplatform builds for omap2+, and the end result
was not very good.
So I'm creating yet another all over the place patch to cut the
last dependency for building omap2+ for ARM multiplatform. After
this, we have finally removed the driver dependencies to the
arch/arm code, except for few drivers that are being worked on.
The other option was to make the <plat-omap/dma-omap.h> path
to work, but we'd have to add some new header directory to for
multiplatform builds.
Or we would have to manually include arch/arm/plat-omap/include
again from arch/arm/Makefile for omap2+.
Neither of these alternatives sound appealing as they will
likely lead addition of various other headers exposed to the
drivers, which we want to avoid for the multiplatform kernels.
Since we already have a minimal include/linux/omap-dma.h,
let's just use that instead and add a note to it to not
use the custom omap DMA functions any longer where possible.
Note that converting omap DMA to dmaengine depends on
dmaengine supporting automatically incrementing the FIFO
address at the device end, and converting all the remaining
legacy drivers. So it's going to be few more merge windows.
[1] https://patchwork.kernel.org/patch/1519591/#
cc: Russell King <linux@arm.linux.org.uk>
cc: Kevin Hilman <khilman@ti.com>
cc: "Benoît Cousson" <b-cousson@ti.com>
cc: Herbert Xu <herbert@gondor.apana.org.au>
cc: "David S. Miller" <davem@davemloft.net>
cc: Vinod Koul <vinod.koul@intel.com>
cc: Dan Williams <djbw@fb.com>
cc: Mauro Carvalho Chehab <mchehab@infradead.org>
cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
cc: David Woodhouse <dwmw2@infradead.org>
cc: Kyungmin Park <kyungmin.park@samsung.com>
cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
cc: Hans Verkuil <hans.verkuil@cisco.com>
cc: Vaibhav Hiremath <hvaibhav@ti.com>
cc: Lokesh Vutla <lokeshvutla@ti.com>
cc: Rusty Russell <rusty@rustcorp.com.au>
cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
cc: Afzal Mohammed <afzal@ti.com>
cc: linux-crypto@vger.kernel.org
cc: linux-media@vger.kernel.org
cc: linux-mtd@lists.infradead.org
cc: linux-usb@vger.kernel.org
cc: linux-fbdev@vger.kernel.org
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
The i2c_device_id table is supposed to be zero-terminated.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
When enabling a hwmod, omap_hwmod refers to the register mentioned in the
hwmod struct's member 'prcm.omap4.context_offs' to see whether context was
lost or not. It increments the context lost count for the hwmod and then clears
the register.
All the DSS hwmods have the same register(RM_DSS_DSS_CONTEXT) as context_offs.
When DSS is enabled, the first hwmod to be enabled is the "dss_core" hwmod since
it's corresponding platform device is the parent platform device("omapdss_dss").
The dss_core hwmod updates it's context lost count correctly and clears the
register. When the hwmods corresponding to the children platform devices are
enabled, they see that the register is clear, and don't increment their context
lost count. Therefore, all the children platform devices never report a loss in
context.
The DISPC driver currently gets the context lost count for DSS power domain from
it's corresponding platform device instance("omapdss_dispc"). The DISPC platform
device is one of the child devices, and it's corresponding hwmod("dss_dispc")
doesn't report the context lost count correctly.
Modify dss_get_ctx_loss_count() such that it always takes the "omapdss_dss"
platform device as it's input, move the function to dss.c so that it has access
to that platform device.
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Exynos DP changes for the 3.8 merge window.
- Device Tree support for Samsung Exynos DP
- SW Link training is cleaned up.
- HPD interrupt is supported.
* 'exynos-dp-next' of git://github.com/jingoo/linux:
video: exynos_dp: remove redundant parameters
video: exynos_dp: Fix incorrect setting for INT_CTL
video: exynos_dp: Reset and initialize DP before requesting irq
video: exynos_dp: Enable hotplug interrupts
video: exynos_dp: Move hotplug into a workqueue
video: exynos_dp: Remove sink control to D0
video: exynos_dp: Fix bug when checking dp->irq
video: exynos_dp: Improve EDID error handling
video: exynos_dp: Get pll lock before pattern set
video: exynos_dp: Clean up SW link training
video: exynos_dp: Check DPCD return codes
video: exynos_dp: device tree documentation
video: exynos_dp: Add device tree support to DP driver
Samsung Framebuffer changes for the 3.8 merge window.
- The bit definitions of header file are updated.
- Some minor typos are fixed.
- Some minor bugs of s3c_fb_check_var() are fixed.
* 'samsung-fb-next' of git://github.com/jingoo/linux:
video: s3c-fb: fix red offset and length for ARGB232 format
video: s3c-fb: return an error when bpp is invalid
video: s3c-fb: add "drop through" comment
video: s3c-fb: use dev_get_drvdata() instead of platform_get_drvdata()
video: s3c-fb: use FIMD_V8_VIDTCON0 for EXYNOS5 FIMD
video: s3c-fb: fix help message for FB_S3C_DEBUG_REGWRITE
video: s3c-fb: fix typo in comment
video: s3c-fb: add the bit definitions for VIDCON0_VIDOUT_WB
video: s3c-fb: move the bit definitions for DITHMODE register
video: s3c-fb: move the bit definitions for WINxMAP and WPALCON register
video: s3c-fb: move the bit definitions for VIDINTCON0 register
video: s3c-fb: move the address definition for VIDOSD register
video: s3c-fb: move the address definitions for VIDTCON registers
video: s3c-fb: clean the bit definition for WINCON register
This patch cleans up few redundant parameters keeping
the same functionality intact.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
INT_CTL register contains bits INT_POL0 and INT_POL1, and not INT_POL.
This patch fixes the wrong register setting for INT_CTL.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
If DP is not reset properly before kernel bootup(in bootloader code),
there can be few pending interrupts, and sometimes they invoke
DP irq handler as soon as the irq handler is registered in DP probe.
So, we make the DP driver more robust by resetting and
initializing DP at the earliest and then registering the irq handler.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Enable hotplug interrupts and move the hotplug scheduling into the
interrupt handler. This allows us to introduce a screen at any time
while we're running.
[jg1.han@samsung.com: moved the bit masking of hotplug interrupts]
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Olof Johansson <olofj@chromium.org>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Move the hotplug related code from probe and resume into a workqueue.
This allows us to initialize the DP driver (and resume it) when there
is no monitor connected.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Olof Johansson <olofj@chromium.org>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
According to DP spec, it is not required in the Link Training
procedure.
[jg1.han@samsung.com: modified the commit message]
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Fix a bug where we check !dp->irq instead of the correct check for
-ENXIO.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Olof Johansson <olofj@chromium.org>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
EDID error handling has 2 problems:
- It doesn't fail as early as it can
- The retry counts for i2c and aux transactions are huge
This patch fails if the initial i2c transaction fails, and reduces the
aux and i2c retry counts down to 3.
[jg1.han@samsung.com: reduced the retry count of exynos_dp_read_byte_from_dpcd()]
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
According to the exynos datasheet (Figure 49-10), we should wait for PLL
lock before programming the training pattern when doing software eDP
link training.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Clean up some of the SW training code to make it more clear and reduce
duplicate code.
[jg1.han@samsung.com: used exynos_dp_write_bytes_to_dpcd()]
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Add return code checks to the DPCD transactions in the SW link training
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
This patch enables device tree based discovery support for DP driver.
The driver is modified to handle platform data in both the cases:
with DT and non-DT.
Signed-off-by: Ajay Kumar <ajaykumar.rs@samsung.com>
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.
Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add dss_get_core_pdev() which returns the platform device for dss core
device. The following patches use the core pdev to register sysfs files
in the compat code.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Move display sysfs related code from display.c to display-sysfs.c, for
clarity. The sysfs code will only be used for compat mode.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
In order to make the scaling calculations independent of the current
hardware configuration (e.g. which manager is connected to this output),
we need to change the calc funcs to get all the variables needed for the
calculations via parameters.
This patch changes dispc_ovl_calc_scaling to get pclk and lclk as
parameters.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
In order to make the scaling calculations independent of the current
hardware configuration (e.g. which manager is connected to this output),
we need to change the calc funcs to get all the variables needed for the
calculations via parameters.
This patch changes calc_scaling to get pclk and lclk as parameters.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
In order to make the scaling calculations independent of the current
hardware configuration (e.g. which manager is connected to this output),
we need to change the calc funcs to get all the variables needed for the
calculations via parameters.
This patch changes check_horiz_timing_omap3() to get pclk and lclk as
parameters.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
In order to make the scaling calculations independent of the current
hardware configuration (e.g. which manager is connected to this output),
we need to change the calc funcs to get all the variables needed for the
calculations via parameters.
This patch changes calc_core_clk() function to get pclk as a parameter.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Change the dispc_plane_pclk_rate and dispc_plane_lclk_rate functions to
return 0 if the given plane is the writeback plane. The clocks are not
valid for WB, but returning 0 from these functions instead of running
into BUG() will simplify the code that uses these functions.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
dispc_mgr_go() should never be called with manager output disabled or if
the GO bit is already set. Change the current silent returns to
WARN_ONs.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Instead of doing direct register reads/writes, dispc_wb_enable() and
dispc_wb_is_enabled() functions can use the common overlay functions to
set and check the enable bit.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
WB will not be used with compat-mode, i.e. from omapfb. This means we
don't need the current complex dispc_wb_enable function, but can have a
simple register write version of the function.
This patch removes all the extra code from dispc_wb_enable()
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
dispc_mgr_disable_digit_out() needs to wait until the DIGIT output is
turned off. This is done with either VSYNC irq on OMAP2/3 and
FRAMEDONETV on OMAP4+. It currently uses a rather hacky way to decide
what irq to use.
This patch changes dispc_mgr_disable_digit_out to use
dispc_mgr_get_framedone_irq to find out if there's framedone irq on this
SoC, and if not, uses VSYNC.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
OMAP2/3 do not have FRAMEDONETV irq, but later omaps do. We currently
always return 0 from dispc_mgr_get_framedone_irq() for TV output to be
compatible with OMAP2/3.
This patch implements "no_framedone_tv" dispc-feature that is used in
dispc_mgr_get_framedone_irq to return either 0 for OMAP2/3, or the
correct IRQ number for FRAMEDONETV on OMAP4+.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
dsi_get_dsidev_from_id() gives a WARN if DSI support is not compiled in.
This warning is not right, as it's valid to call
dsi_get_dsidev_from_id() to see if there is DSI support or not.
Remove the WARN().
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
