Instead of managing DSI sync ends with booleans, add an enum for the DSI
transfer mode. This is much cleaner way to handle the DSI syncs.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
To find out the DSI line buffer size we need to read HW registers. To
make it possible to do DSI configuration calculations without HW powered
up, store the line buffer size at DSI driver's probe.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
We have a bunch of dsi functions that are used to do the basic
configuration for DSI. To simplify things, and to make sure we have all
the necessary information, create a single dsi config function, which
does the basic configuration.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
dsi_configure_dispc_clocks() stores dsi func clock into unsigned long
long, but it should really be just unsigned long. Fix this.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
On OMAP5 the DISPC channels and DSI PLLs are not connected the same way.
LCD2 on OMAP5 cannot use any DSI PLL as a source clock, but LCD3 can use
DSI2's PLL.
This patch fixes dpi_get_dsidev() by adding separate case for OMAP5 to
handle the difference.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
Taal panel driver has support to set rotation and mirroring. However,
these features cannot be used without causing tearing, and are never
used. The code is just extra bloat, so let's remove it.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
During the initialization of the DSI protocol registers, we always set
the sources of all DSI channels to L4. However, we don't update the
value in the dsi_data, so we may end up with a different value in the
register and in the dsi_data, leading to DSI problems.
This patch fixes the issue by initializing also the channel source in
the dsi_data.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
We currently setup both DSI and DISPC related things when the DSI bus is
enabled. There's no need for DISPC related thing at that point, though,
but only later when the video output is enabled.
To make it possible to use the DSI bus before DISPC overlay manager is
selected, this patch moves DSI's DISPC initialization to
dsi_enable_video_output(), from omapdss_dsi_display_enable(). We also
move the selection of DISPC's LCD clock to dsi_enable_video_output.
This way there are no DISPC dependencies until the video output is
enabled.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
The DISPC channel used for each output is currently passed in panel
platform data from the board files.
To simplify this, and to make the panel drivers less dependent on OMAP,
this patch changes omapdss to resolve the channel independently. The
channel is resolved based on the OMAP version and, in case of DSI, the
DSI module id. This resolved channel is stored into a new field in
output, dispc_channel.
The few places where dssdev->channel was used are changed to use
output->recommended_channel. After this patch, dssdev->channel is
obsolete.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
Add name field to omapdss's outputs so that in the following patches
panels refer to the output by their name. The name also helps debugging.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
Move hdmi driver's output initialization a bit earlier, so that it
happens before hdmi panel init. In the future the hdmi panel will depend
on the output being ready.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
omap_dss_get_output() is a public function, but was missing
EXPORT_SYMBOL().
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
dss_mgr_wait_for_vsync() uses dssdev->type to find out if the output is
going to VENC, HDMI, or something else. This creates a dependency on
dssdev, which we want to remove. The task is more logically done by
looking at the output to which the overlay manager in question is
connected to.
This patch changes the code to use output->id to find out which kind of
output we use.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
Taal panel driver was originally meant to support multiple different DSI
command mode panel models. This never realized, and the multi-panel
support code is lying there unused, making the driver more difficult to
maintain.
This patch removes the multi-panel support from Taal driver.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
The role of struct omap_dss_device will change in the future. The exact
details of that are still a bit unclear. However, the less uses of
omap_dss_device we have, the easier the change is in the future.
This patch removes uses of omap_dss_device from dsi.c, where it can be
done easily. Mostly this means passing dsi platform device to functions,
instead of the omap_dss_device.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
The role of struct omap_dss_device will change in the future. The exact
details of that are still a bit unclear. However, the less uses of
omap_dss_device we have, the easier the change is in the future.
This patch removes uses of omap_dss_device from dpi.c, where it can be
done neatly, by, for example, passing some lower level parameter in
function parameters.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
struct omap_dss_device contains HDMI clock divisors. The idea is that the
board file can pass precalculated divisors to the display driver.
However, these divsors are no longer needed, as the omapdss driver can
calculate the divisors during runtime.
This patch removes the divisors from omap_dss_device, and their uses
from the hdmi driver.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
struct omap_dss_device contains DSS clock divisors. The idea is that the
board file can pass precalculated divisors to the display driver.
However, these divsors are no longer needed, as the omapdss driver can
calculate the divisors during runtime.
This patch removes the divisors from omap_dss_device, and their uses
from the dsi driver.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>
The support outputs struct for overlay managers is incorrect for OMAP4. Make
these changes:
- DPI isn't supported via the LCD1 overlay manager, remove DPI as a supported
output.
- the TV manager can suppport DPI, but the omapdss driver doesn't support that
yet, we require some muxing at the DSS level, and we also need to configure
the hdmi pll in the DPI driver so that the TV manager has a pixel clock. We
don't support that yet.
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This driver uses omap_dss_device that it gets from a board file through
SPI platfrom_data pointer to pass data from SPI to DSS portion of the
driver by using dev_set_drvdata(). However this trick no longer works,
as DSS core no longer uses omap_dss_device from a board file to create
the real device, so use a global pointer to accomplish this instead,
like other SPI panel drivers do.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
These updates are all for board specific code, including
* defconfig updates for shmobile, davinci, bcm2835, imx, omap and tegra
* SD/MMC and I2C support on bcm2835 (Raspberry PI)
* minor updates for PXA
* shmobile updates to GPIO usage in board files
* More things in OMAP board files are moved over to device tree probing
* Better support for audio devices on some OMAP platforms
Conflicts include the omap board-apollon.c file that is removed without
a replacement, and conflicting context in the 4430sdp board file.
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Merge tag 'boards' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC board specific changes from Arnd Bergmann:
"These updates are all for board specific code, including
- defconfig updates for shmobile, davinci, bcm2835, imx, omap and
tegra
- SD/MMC and I2C support on bcm2835 (Raspberry PI)
- minor updates for PXA
- shmobile updates to GPIO usage in board files
- More things in OMAP board files are moved over to device tree
probing
- Better support for audio devices on some OMAP platforms"
* tag 'boards' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (55 commits)
ARM: imx_v4_v5_defconfig: Add VPU support
ARM: imx: configs: enable netfilter support
ARM: OMAP2+: Fix twl section warnings related to omap_twl4030_audio_init
ARM: OMAP2+: omap2plus_defconfig: enable omap1 rtc
RX-51: Register twl4030-madc device
RX-51: Add leds lp5523 names from Maemo 5 2.6.28 kernel
ARM: OMAP2+: AM33XX: omap2plus_defconfig: Add support for few drivers
ARM: OMAP1: nokia770: enable CBUS/Retu
ARM: OMAP2+: omap2plus_defconfig: enable CMA allocator
ARM: OMAP2+: omap2plus_defconfig: enable TFP410 chip support
ARM: OMAP3: igep0020: simplify GPIO LEDs dependencies
ARM: OMAP2+: craneboard: support the TPS65910 PMU
ARM: OMAP2+: craneboard: support NAND device
ARM: OMAP3: cm-t3517: add MMC support
ARM: OMAP2+: Remove apollon board support
ARM: shmobile: armadillo800eva: set clock rates before timer init
ARM: tegra: defconfig updates
ARM: shmobile: mackerel: Use gpio_request_one()
ARM: shmobile: kzm9g: Use gpio_request_one()
ARM: shmobile: bonito: Use gpio_request_one()
...
Here is the big driver core merge for 3.9-rc1
There are two major series here, both of which touch lots of drivers all
over the kernel, and will cause you some merge conflicts:
- add a new function called devm_ioremap_resource() to properly be
able to check return values.
- remove CONFIG_EXPERIMENTAL
If you need me to provide a merged tree to handle these resolutions,
please let me know.
Other than those patches, there's not much here, some minor fixes and
updates.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core patches from Greg Kroah-Hartman:
"Here is the big driver core merge for 3.9-rc1
There are two major series here, both of which touch lots of drivers
all over the kernel, and will cause you some merge conflicts:
- add a new function called devm_ioremap_resource() to properly be
able to check return values.
- remove CONFIG_EXPERIMENTAL
Other than those patches, there's not much here, some minor fixes and
updates"
Fix up trivial conflicts
* tag 'driver-core-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (221 commits)
base: memory: fix soft/hard_offline_page permissions
drivercore: Fix ordering between deferred_probe and exiting initcalls
backlight: fix class_find_device() arguments
TTY: mark tty_get_device call with the proper const values
driver-core: constify data for class_find_device()
firmware: Ignore abort check when no user-helper is used
firmware: Reduce ifdef CONFIG_FW_LOADER_USER_HELPER
firmware: Make user-mode helper optional
firmware: Refactoring for splitting user-mode helper code
Driver core: treat unregistered bus_types as having no devices
watchdog: Convert to devm_ioremap_resource()
thermal: Convert to devm_ioremap_resource()
spi: Convert to devm_ioremap_resource()
power: Convert to devm_ioremap_resource()
mtd: Convert to devm_ioremap_resource()
mmc: Convert to devm_ioremap_resource()
mfd: Convert to devm_ioremap_resource()
media: Convert to devm_ioremap_resource()
iommu: Convert to devm_ioremap_resource()
drm: Convert to devm_ioremap_resource()
...
commit 195e672a76
OMAPDSS: DPI: Remove cpu_is_xxxx checks
made the mistake of assuming that cpu_is_omap34xx() is exclusive of
other cpu_is_* predicates whereas it includes cpu_is_omap3630().
So on an omap3630, code that was previously enabled by
if (cpu_is_omap34xx())
is now disabled as
dss_has_feature(FEAT_DPI_USES_VDDS_DSI)
fails.
So add FEAT_DPI_USES_VDDS_DSI to omap3630_dss_feat_list.
Cc: Chandrabhanu Mahapatra <cmahapatra@ti.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Convert all uses of devm_request_and_ioremap() to the newly introduced
devm_ioremap_resource() which provides more consistent error handling.
devm_ioremap_resource() provides its own error messages so all explicit
error messages can be removed from the failure code paths.
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
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. As a result, the __dev*
markings need to be removed.
This change removes the use of __devinit, __devexit_p, __devinitdata,
__devinitconst, and __devexit from these drivers.
Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.
Cc: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
These devices are not available on other architectures, so
let's limit them to omap.
If the driver subsystem maintainers want to build test
system wide changes without building for each target,
it's easy to carry a test patch that just strips out the
depends entries from Kconfig files.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 0e8276ef75 (OMAPDSS: DPI: always
use DSI PLL if available) made dpi.c use DSI PLL for its clock. This
works fine, for DPI, but has a nasty side effect on OMAP3:
On OMAP3 the same clock is used for DISPC fclk and LCD output. Thus,
after the above patch, DSI PLL is used for DISPC and LCD output. If
TV-out is used, the TV-out needs DISPC. And if DPI is turned off, the
DSI PLL is also turned off, disabling DISPC.
For this to work, we'd need proper DSS internal clock handling, with
refcounts, which is a non-trivial project.
This patch fixes the issue for now by disabling the use of DSI PLL for
DPI on OMAP3.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This reverts commit b41deecbda.
The simpler locking causes huge latencies when two processes use the
omapfb, even if they use different framebuffers.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
fb2display() has a for loop which always returns at the first iteration.
Replace the loop with a simple if.
This removes the smatch warning:
drivers/video/omap2/omapfb/omapfb.h:153 fb2display() info: loop could be
replaced with if statement.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
omapfb_find_best_mode() doesn't check for the return value of kmalloc.
Fix this. This also removes the smatch warning:
drivers/video/omap2/omapfb/omapfb-main.c:2256 omapfb_find_best_mode()
error: potential null dereference 'specs'. (kzalloc returns null)
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Use devm_kzalloc to allocate omapfb2_device. This fixes possible memory
leak:
drivers/video/omap2/omapfb/omapfb-main.c:2553 omapfb_probe() warn:
possible memory leak of 'fbdev'
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
The previous patch changes dispc to get the dispc fck rate from dss core
driver. This was the only use of the dispc fck in dispc, and thus we can
now remove the clock handling.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Dispc currently gets dispc's fck with clk_get() and uses clk_get_rate()
to get the rate for scaling calculations. This causes a problem with
common clock framework, as omapdss uses the dispc functions inside a
spinlock, and common clock framework uses a mutex in clk_get_rate().
Looking at the DSS clock tree, the above use of the dispc fck is not
quite correct. The DSS_FCLK from PRCM goes to DSS core block, which has
a mux to select the clock for DISPC from various options, so the current
use of dispc fck bypasses that. Fortunately we never change the dispc
clock mux for now.
To fix the issue with clk_get_rate(), this patch caches the dss clock
rate in dss.c when it is set. Dispc will then ask for the clock rate
from dss. While this is not very elegant, it does fix the issue, and
it's not totally wrong when considering that the dispc fck actually
comes via dss.
In the future we should probably look into common clock framework and
see if that could be used to represent the DSS clock tree properly.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
omapdss_compat_init() and omapdss_compat_uninit() is called internally
by omapdss. This patch moves the calls to omapfb, omap_vout and omapdrm
drivers. omapdrm driver can later remove the call after non-compat
support has been implemented in omapdrm.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
dpi.c uses dss_mgr_check_timings() to verify video timings, but that
function is in the compat layer. Change dpi.c to use the dispc's check
instead.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This patch adds a new function, dispc_ovl_check(), which can be used to
verify scaling configuration for an overlay. The function gets both the
overlay and overlay manager as parameters, so that the caller does not
need to configure the hardware before using this function.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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>
