devm_* APIs are device managed and make exit and cleanup code simpler.
While at it also remove some unused labels and fix an error path.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Donghwa Lee <dh09.lee@samsung.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Add mmp display subsystem to support Marvell MMP display controllers.
This subsystem contains 4 parts:
--fb folder
--core.c
--hw folder
--panel folder
1. fb folder contains implementation of fb. fb get path and overlay
from common interface and operates on these structures.
2. core.c provides common interface for a hardware abstraction. Major
parts of this interface are:
a) Path: path is a output device connected to a panel or HDMI TV. Main
operations of the path is set/get timing/output color. fb operates
output device through path structure.
b) Ovly: Ovly is a buffer shown on the path.
Ovly describes frame buffer and its source/destination size, offset,
input color, buffer address, z-order, and so on. Each fb device maps
to one overlay.
3. hw folder contains implementation of hardware operations defined by
core.c. It registers paths for fb use.
4. panel folder contains implementation of panels. It's connected to
path. Panel drivers would also regiester panels and linked to path
when probe.
Signed-off-by: Zhou Zhu <zzhu3@marvell.com>
Signed-off-by: Lisa Du <cldu@marvell.com>
Cc: Guoqing Li <ligq@marvell.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The i2c handling in tfp410 driver, which handles converting parallel RGB
to DVI, was changed in 958f2717b8
(OMAPDSS: TFP410: pdata rewrite). The patch changed what value the
driver considers as invalid/undefined. Before the patch, 0 was the
invalid value, but as 0 is a valid bus number, the patch changed this to
-1.
However, the fact was missed that many board files do not define the bus
number at all, thus it's left to 0. This causes the driver to fail to
get the i2c bus, exiting from the driver's probe with an error, meaning
that the DVI output does not work for those boards.
This patch fixes the issue by changing the i2c_bus number field in the
driver's platform data from u16 to int, and setting the bus number to -1
in the board files for the boards that did not define the bus. The
exception is devkit8000, for which the bus is set to 1, which is the
correct bus for that board.
The bug exists in v3.5+ kernels.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: Thomas Weber <thomas@tomweber.eu>
Cc: Thomas Weber <thomas@tomweber.eu>
Cc: <stable@vger.kernel.org> # v3.5+
Signed-off-by: Tony Lindgren <tony@atomide.com>
OMAPDSS changes for 3.8, including:
- use dynanic debug prints
- OMAP platform dependency removals
- Creation of compat-layer, helping us to improve omapdrm
- Misc cleanups, aiming to make omadss more in line with the upcoming common
display framework
* tag 'omapdss-for-3.8' of git://gitorious.org/linux-omap-dss2/linux: (140 commits)
OMAPDSS: fix TV-out issue with DSI PLL
Revert "OMAPFB: simplify locking"
OMAPFB: remove silly loop in fb2display()
OMAPFB: fix error handling in omapfb_find_best_mode()
OMAPFB: use devm_kzalloc to allocate omapfb2_device
OMAPDSS: DISPC: remove dispc fck uses
OMAPDSS: DISPC: get dss clock rate from dss driver
OMAPDSS: use omapdss_compat_init() in other drivers
OMAPDSS: export dispc functions
OMAPDSS: export dss_feat functions
OMAPDSS: export dss_mgr_ops functions
OMAPDSS: separate compat files in the Makefile
OMAPDSS: move display sysfs init to compat layer
OMAPDSS: DPI: use dispc's check_timings
OMAPDSS: DISPC: add dispc_ovl_check()
OMAPDSS: move irq handling to dispc-compat
OMAPDSS: move omap_dispc_wait_for_irq_interruptible_timeout to dispc-compat.c
OMAPDSS: move blocking mgr enable/disable to compat layer
OMAPDSS: manage framedone irq with mgr ops
OMAPDSS: add manager ops
...
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>
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>
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
Configure below LCDC configurations to optimal values, also have an
option configure these optional parameters for platform.
1) AC bias configuration: Required only for passive panels
2) Dma_burst_size:
3) FIFO_DMA_DELAY:
4) FIFO threshold: Does not apply for da830 LCDC.
Patch is verified for 16bpp and 24bpp configurations on da830, da850 and
am335x EVMs.
Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Adopt fb_videomode data instead of defining driver private
structure to hold panel information. This is the way standard FB
drivers maintain the panel information.
Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This patch adds the bit definitions for VIDCON0_VIDOUT_WB.
These definitions are used to support writeback for RGB and
i80 interface. Also, output format of writeback is YUV444.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
The bit definitions for DITHMODE registers are moved according to
address order. Also, the bit definition of VIDCON1_FSTATUS_EVEN
is moved.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
This patch cleans the bit definition for WINCON register.
The bit definition for WINCON1 and WINCON2 is removed, because
it is not used.
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
The channel field stores the LCDC channel corresponding to the MIPI-DSI
transmitter. The information is currently obtained through the lcd_chan
field that will be removed.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Export dss_get_def_display_name() with the name of
omapdss_get_def_display_name() so that omapfb can use it after the next
patch which moves default display handling to omapfb.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
The output drivers get the omapdss hw version from the platform data for
their respective output device. This doesn't work with DT, as there's no
platform data for them.
Add a new function, omapdss_get_version(), which returns the dss version
from the core device, which will have platform data on DT also. The
function is exported so that users of omapdss can also use it.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
The panel drivers contain enable, disable, suspend and resume calls.
The suspend and resume are effectively identical to disable and enable.
This patch removes panel suspend and enable code from omapdss and the
panel drivers, and replaces their use with enable and disable.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
acbi and acb fields were meant for passive matrix panels which omapdss
doesn't support any longer. Remove these fields from omap_dss_device
struct.
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Add an exported function omap_vrfb_supported() which returns true if the
vrfb driver has been loaded succesfully. This can be used to decide if
VRFB can be used or not.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Now that vrfb driver is not omap dependent anymore, we can move vrfb.h
from arch/arm/plat-omap/include/plat to include/video/omapvrfb.h.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Vaibhav Hiremath <hvaibhav@ti.com>
Add new enum, omapdss_version, that is used to tell which DSS hardware
version the SoC has. This enum is initialized during platform init, and
passed in the platform data to omapdss driver.
Note that the versions are not "continuous", that is, you cannot check
if the version is less or greater than something, but you need to check
for exact version match. In other words, this is invalid:
/* test if DSS is 3630 or earlier */
if (ver <= OMAPDSS_VER_OMAP3630)
...
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
It includes:
- large updates for OMAP
- basic OMAP5 DSS support for DPI and DSI outputs
- large cleanups and restructuring
- some update to Exynos and da8xx-fb
- removal of the pnx4008 driver (arch removed)
- various other small patches
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Merge tag 'fbdev-updates-for-3.7' of git://github.com/schandinat/linux-2.6
Pull fbdev updates from Florian Tobias Schandinat:
"This includes:
- large updates for OMAP
- basic OMAP5 DSS support for DPI and DSI outputs
- large cleanups and restructuring
- some update to Exynos and da8xx-fb
- removal of the pnx4008 driver (arch removed)
- various other small patches"
Fix up some trivial conflicts (mostly just include line changes, but
also some due to the renaming of the deferred work functions by Tejun).
* tag 'fbdev-updates-for-3.7' of git://github.com/schandinat/linux-2.6: (193 commits)
gbefb: fix compile error
video: mark nuc900fb_map_video_memory as __devinit
video/mx3fb: set .owner to prevent module unloading while being used
video: exynos_dp: use clk_prepare_enable and clk_disable_unprepare
drivers/video/exynos/exynos_mipi_dsi.c: fix error return code
drivers/video/savage/savagefb_driver.c: fix error return code
video: s3c-fb: use clk_prepare_enable and clk_disable_unprepare
da8xx-fb: save and restore LCDC context across suspend/resume cycle
da8xx-fb: add pm_runtime support
video/udlfb: fix line counting in fb_write
OMAPDSS: add missing include for string.h
OMAPDSS: DISPC: Configure color conversion coefficients for writeback
OMAPDSS: DISPC: Add manager like functions for writeback
OMAPDSS: DISPC: Configure writeback FIFOs
OMAPDSS: DISPC: Configure writeback specific parameters in dispc_wb_setup()
OMAPDSS: DISPC: Configure overlay-like parameters in dispc_wb_setup
OMAPDSS: DISPC: Add function to set channel in for writeback
OMAPDSS: DISPC: Don't set chroma resampling bit for writeback
OMAPDSS: DISPC: Downscale chroma if plane is writeback
OMAPDSS: DISPC: Configure input and output sizes for writeback
...
Notable changes:
* Basic writeback support for DISPC level. Writeback is not yet usable, though,
as we need higher level code to actually expose the writeback feature to
userspace.
* Rewriting the omapdss output drivers. We're trying to remove the hard links
between the omapdss and the panels, and this rewrite work moves us closer to
that goal.
* Cleanup and restructuring patches that have been made while working on device
tree support for omapdss. Device tree support is still some way ahead, but
these patches are good cleanups in themselves.
* Basic OMAP5 DSS support for DPI and DSI outputs.
* Workaround for the problem that GFX overlay's fifo is too small for high
resolution scenarios, causing underflows.
* Cleanups that remove dependencies to omap platform code.
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Merge tag 'omapdss-for-3.7' of git://gitorious.org/linux-omap-dss2/linux into fbdev-next
Omapdss driver changes for the 3.7 merge window.
Notable changes:
* Basic writeback support for DISPC level. Writeback is not yet usable, though,
as we need higher level code to actually expose the writeback feature to
userspace.
* Rewriting the omapdss output drivers. We're trying to remove the hard links
between the omapdss and the panels, and this rewrite work moves us closer to
that goal.
* Cleanup and restructuring patches that have been made while working on device
tree support for omapdss. Device tree support is still some way ahead, but
these patches are good cleanups in themselves.
* Basic OMAP5 DSS support for DPI and DSI outputs.
* Workaround for the problem that GFX overlay's fifo is too small for high
resolution scenarios, causing underflows.
* Cleanups that remove dependencies to omap platform code.
The current kernel does not fit in the CEIVA ROM. Also, some functional
has already been removed due migrate from 2.6 to 3.0, and it seems that
no one uses this platform. So, remove support for this board and modules
specific only to this board.
Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Create struct omap_dss_writeback_info, this is similar to omap_overlay_info,
the major difference is that there is no parameter which describes the input
size to writeback, this is because this is always fixed, and decided by the
connected overlay or overlay manager. One more difference is that screen_width
is renamed to buf_width, to give the value of stride the writeback buffer has.
Call dispc_ovl_setup_common() through dispc_wb_setup() to configure overlay-like
parameters. The parameters in dispc_ovl_setup_common() which do not hold for
writeback are filled passed as zeroes or false, the code takes care of not
configuring them as they won't possess the needed overlay caps.
Signed-off-by: Archit Taneja <archit@ti.com>
Add position and replication as overlay caps, and pass overlay caps as an
argument to the corresponding functions. Adding position and replication to
overlay caps seems a bit unnecessary, but it allows us to use the
corresponding functions for writeback too.
These caps will be set for all overlays, but not for writeback. This is done
so writeback can reuse dispc_ovl_setup() to the maximum.
Signed-off-by: Archit Taneja <archit@ti.com>
Now that an omap_dss_output can be used to link between managers and devices, we
can remove the old way of setting manager and device links. This involves
removing the device and manager pointers from omap_overlay_manager and
omap_dss_device respectively, and removing the set_device/unset_device ops from
omap_overlay_manager.
Signed-off-by: Archit Taneja <archit@ti.com>
With the introduction of output entities, managers will now connect to outputs.
Create helper ops for overlays and managers named get_device. This will abstract
away the information on how to get the device from an overlay or an overlay
manager. The get_device ops currently retrieve the output via a
ovl->manager->device reference. This will be later replaced by
ovl->manager->output->device references.
Signed-off-by: Archit Taneja <archit@ti.com>
Add set_output/unset_output ops for overlay managers, these form links between
managers and outputs. Create a function in dss features which tell all the
output instances that connect to a manager, use it when a manager tries to set
an output. Add a constraint of not unsetting an output when the manager is
enabled.
Keep the omap_dss_device pointer and set/unset_device ops in overlay_manager for
now to not break things. Keep the dss feature function get_supported_displays
as it's used in some places. These will be removed later.
Signed-off-by: Archit Taneja <archit@ti.com>
An output entity represented by the struct omap_dss_output connects to a
omap_dss_device entity. Add functions to set or unset an output's device. This
is similar to how managers and devices were connected previously. An output can
connect to a device without being connected to a manager. However, the output
needs to eventually connect to a manager so that the connected panel can be
enabled.
Keep the omap_overlay_manager pointer in omap_dss_device for now to prevent
breaking things. This will be removed later when outputs are supported
completely.
Signed-off-by: Archit Taneja <archit@ti.com>
The current OMAPDSS design contains 3 software entities: Overlays, Managers and
Devices. These map to pipelines, overlay managers and the panels respectively in
hardware. One or more overlays connect to a manager to represent a composition,
the manager connects to a device(generally a display) to display the content.
The part of DSS hardware which isn't represented by any of the above entities
are interfaces/outputs that connect to an overlay manager, i.e blocks like DSI,
HDMI, VENC and so on. Currently, an overlay manager directly connects to the
display, and the output to which it is actually connected is ignored. The panel
driver of the display is responsible of calling output specific functions to
configure the output.
Adding outputs as a new software entity gives us the following benefits:
- Have exact information on the possible connections between managers and
outputs: A manager can't connect to each and every output, there only limited
hardware links between a manager's video port and some of the outputs.
- Remove hacks related to connecting managers and devices: Currently, default
links between managers and devices are set in a not so clean way. Matching is
done via comparing the device type, and the display types supported by the
manager. This isn't sufficient to establish all the possible links between
managers, outputs and devices in hardware.
- Make panel drivers more generic: The DSS panel drivers currently call
interface/output specific functions to configure the hardware IP. When making
these calls, the driver isn't actually aware of the underlying output. The
output driver extracts information from the panel's omap_dss_device pointer
to figure out which interface it is connected to, and then configures the
corresponding output block. An example of this is when a DSI panel calls
dsi functions, the dsi driver figures out whether the panel is connected
to DSI1 or DSI2. This isn't correct, and having output as entities will
give the panel driver the exact information on which output to configure.
Having outputs also gives the opportunity to make panel drivers generic
across different platforms/SoCs, this is achieved as omap specific output
calls can be replaced by ops of a particular output type.
- Have more complex connections between managers, outputs and devices: OMAPDSS
currently doesn't support use cases like 2 outputs connect to a single
device. This can be achieved by extending properties of outputs to connect to
more managers or devices.
- Represent writeback as an output: The writeback pipeline fits well in OMAPDSS
as compared to overlays, managers or devices.
Add a new struct to represent outputs. An output struct holds pointers to the
manager and device structs to which it is connected. Add functions which can
register/unregister an output, or look for one. Create an enum which represent
each output instance.
Signed-off-by: Archit Taneja <archit@ti.com>
OMAP4's GFX overlay has smaller fifo than the rest of the overlays
(including writeback "overlay"). This seems to be the reason for
underflows in some more demanding scenarios.
We can avoid the problems by using the WB fifo for GFX overlay, and vice
versa. WB usage is not supported yet, but when it will, it should
perform just fine with smaller fifo as there are no hard realtime
constraints with WB.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Currently the way to configure clocks related to DSI (both DSI and DISPC
clocks) happens via omapdss platform data. The reason for this is that
configuring the DSS clocks is a very complex problem, and it's
impossible for the SW to know requirements about things like
interference.
However, for general cases it should be fine to calculate the dividers
for clocks in the SW. The calculated clocks are probably not perfect,
but should work.
This patch adds support to calculate the dividers when using DSI command
mode panels. The panel gives the required DDR clock rate and LP clock
rate, and the DSI driver configures itself and DISPC accordingly.
This patch is somewhat ugly, though. The code does its job by modifying
the platform data where the clock dividers would be if the board file
gave them. This is not how it's going to be in the future, but allows us
to have quite simple patch and keep the backward compatibility.
It also allows the developer to still give the exact dividers from the
board file when there's need for that, as long as the panel driver does
not override them.
There are also other areas for improvement. For example, it would be
better if the panel driver could ask for a DSI clock in a certain range,
as, at least command mode panels, the panel can work fine with many
different clock speeds.
While the patch is not perfect, it allows us to remove the hardcoded
clock dividers from the board file, making it easier to bring up a new
panel and to use device tree from omapdss.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
We currently manage HDMI GPIOs in the board files via
platform_enable/disable calls. This won't work with device tree, and in
any case the correct place to manage the GPIOs is in the HDMI driver.
This patch moves the handling of the GPIOs to the HDMI driver. The GPIO
handling is moved to the common hdmi.c file, and this probably needs to
be revisited when adding OMAP5 HDMI support to see if the GPIO handling
needs to be moved to IP specific files.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
The DISPC_IRQ bit definitions pertaining to channel LCD3 as DISPC_IRQ_VSYNC3,
DISPC_IRQ_SYNC_LOST3, DISPC_IRQ_ACBIAS_COUNT_STAT3 AND DISPC_IRQ_FRAMEDONE3
which were incorrectly set in previous LCD3 patches have been corrected here.
Reported-by: Mark Tyler <mark.tyler@ti.com>
Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
The RFBI driver currently relies on the omap_dss_device struct to receive the
rfbi specific timings requested by the panel driver. This makes the RFBI
interface driver dependent on the omap_dss_device struct.
Make the RFBI driver data maintain it's own rfbi specific timings field. The
panel driver is expected to call omapdss_rfbi_set_interface_timings() to
configure the rfbi timings before the interface is enabled.
Signed-off-by: Archit Taneja <archit@ti.com>
The DSI driver currently relies on the omap_dss_device struct to receive the
video mode timings requested by the panel driver. This makes the DSI interface
driver dependent on the omap_dss_device struct.
Make the DSI driver data maintain it's own video mode timings field. The panel
driver is expected to call omapdss_dsi_set_videomode_timings() to configure the
video mode timings before the interface is enabled.
Signed-off-by: Archit Taneja <archit@ti.com>
