| Commit message (Collapse) | Author | Age |
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dss_mgr_set_lcd_config() can only be called when the output is not
active. This means that most of the code in the function is extra, as
there's no need to write the values to registers, etc, because that will
be handled when the output will be enabled.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Separate sysfs code for managers to a separate file. This is a bit
cleaner, and will allow us later to easily switch off the sysfs support
via Kconfig option.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Separate sysfs code for overlays to a separate file. This is a bit
cleaner, and will allow us later to easily switch off the sysfs support
via Kconfig option.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Remove unnecessary includes from omapdss.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Recent commit dca2b1522ccab28d03fb79f6e70e70ea78033d52 (OMAPDSS: DSI:
Maintain copy of operation mode in driver data) broke DSI for video mode
displays. The commit changed the way dssdev->caps are initialized, and
the result was that every DSI display is initialized with manual-update
and tear-elim caps.
The code that sets dssdev->caps is not very good, even when fixed.
omapdss driver shouldn't be writing dssdev->caps at all.
This patch fixes the problem with video mode displays by moving the
initialization of dssdev->caps to the panel driver. The same change is
done for RFBI.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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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>
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Add max value of DSI functional clock to dss_features, so that DSI
driver can use it.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The HDMI driver requires vdda_hdmi_dac power for operation, but does not
enable it. This has worked because the regulator has been always
enabled.
But this may not always be the case, as I encountered when implementing
HDMI device tree support.
This patch changes the HDMI driver to use the vdda_hdmi_dac.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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TPD12S015A spec says to wait 300us after setting CT_CP_HPD gpio for the
5V power output to reach 90% of the voltage. This patch adds the delay
to the driver.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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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>
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Merge 3.6-rc4 to get latest OMAP and device tree fixes.
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fbdev-next
Conflicts:
drivers/video/omap2/dss/core.c
drivers/video/omap2/dss/dispc.c
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If runtime PM is not enabled in the kernel config, pm_runtime_get_sync()
will always return 1 and pm_runtime_put_sync() will always return
-ENOSYS. pm_runtime_get_sync() returning 1 presents no problem to the
driver, but -ENOSYS from pm_runtime_put_sync() causes the driver to
print a warning.
One option would be to ignore errors returned by pm_runtime_put_sync()
totally, as they only say that the call was unable to put the hardware
into suspend mode.
However, I chose to ignore the returned -ENOSYS explicitly, and print a
warning for other errors, as I think we should get notified if the HW
failed to go to suspend properly.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Jassi Brar <jaswinder.singh@linaro.org>
Cc: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
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The current way how omapdss handles system suspend and resume is that
omapdss device (a platform device, which is not part of the device
hierarchy of the DSS HW devices, like DISPC and DSI, or panels.) uses
the suspend and resume callbacks from platform_driver to handle system
suspend. It does this by disabling all enabled panels on suspend, and
resuming the previously disabled panels on resume.
This presents a few problems.
One is that as omapdss device is not related to the panel devices or the
DSS HW devices, there's no ordering in the suspend process. This means
that suspend could be first ran for DSS HW devices and panels, and only
then for omapdss device. Currently this is not a problem, as DSS HW
devices and panels do not handle suspend.
Another, more pressing problem, is that when suspending or resuming, the
runtime PM functions return -EACCES as runtime PM is disabled during
system suspend. This causes the driver to print warnings, and operations
to fail as they think that they failed to bring up the HW.
This patch changes the omapdss suspend handling to use PM notifiers,
which are called before suspend and after resume. This way we have a
normally functioning system when we are suspending and resuming the
panels.
This patch, I believe, creates a problem that somebody could enable or
disable a panel between PM_SUSPEND_PREPARE and the system suspend, and
similarly the other way around in resume. I choose to ignore the problem
for now, as it sounds rather unlikely, and if it happens, it's not
fatal.
In the long run the system suspend handling of omapdss and panels should
be thought out properly. The current approach feels rather hacky.
Perhaps the panel drivers should handle system suspend, or the users of
omapdss (omapfb, omapdrm) should handle system suspend.
Note that after this patch we could probably revert
0eaf9f52e94f756147dbfe1faf1f77a02378dbf9 (OMAPDSS: use sync versions of
pm_runtime_put). But as I said, this patch may be temporary, so let's
leave the sync version still in place.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: Jassi Brar <jaswinder.singh@linaro.org>
Tested-by: Jassi Brar <jaswinder.singh@linaro.org>
Tested-by: Joe Woodward <jw@terrafix.co.uk>
Signed-off-by: Archit Taneja <archit@ti.com>
[fts: fixed 2 brace coding style issues]
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
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The OMAP3 checks have been removed and replaced by a dss feature
FEAT_DPI_USES_VDDS_DSI for cleaner implementation. The patches
"OMAP: DSS2: enable VDDS_DSI when using DPI" (8a2cfea8cc) by Tomi Valkeinen
<tomi.valkeinen@nokia.com> and "ARM: omap: fix oops in
drivers/video/omap2/dss/dpi.c" (4041071571) by Russell King
<rmk+kernel@arm.linux.org.uk> had introduced these checks. As it is evident
from these patches a dependency exists for some DSS pins on VDDS_DSI which is
better shown by dss feature FEAT_DPI_USES_VDDS_DSI.
Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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OMAP4 checks are removed from VENC to provide it a cleaner interface. These
checks were introduced by patches "HACK: OMAP: DSS2: VENC: disable VENC on OMAP4
to prevent crash" (ba02fa37de) by Tomi Valkeinen <tomi.valkeinen@ti.com> and
"OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on
OMAP4" (cc1d3e032d) by Danny Kukawka <danny.kukawka@bisect.de> to prevent VENC
from crashing OMAP4 kernel.
Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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All the cpu_is checks have been moved to dss_init_features function providing a
much more generic and cleaner interface. The OMAP version and revision specific
initializations in various functions are cleaned and the necessary data are
moved to dss_features structure which is local to dss.c.
Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Functions dss_calc_clock_rates() and dss_get_clock_div() are removed as these
functions have become redundant and no longer used.
Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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All the cpu_is checks have been moved to dispc_init_features function providing
a much more generic and cleaner interface. The OMAP version and revision
specific functions and data are initialized by dispc_features structure which is
local to dispc.c.
Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Commit 7849398fa28c21dad24292b838b059a862f99f16 introduced a bug,
causing the following error to be reported:
[ 370.827819] cannot lock PLL
[ 370.830749] CFG1 0x1e
[ 370.833160] CFG2 0x602004
[ 370.835876] CFG4 0x40000
[ 370.838562] omapdss HDMI: Failed to lock PLL
However, HDMI output is still enabled.
The problem is that we enable the HDMI video output temporarily when
reading EDID or detecting if a HDMI cable is connected (ugh), and the
commit above changes the behavior of the driver so that the video
timings are not yet configured at the point when EDID is read.
This patch fixes the problem by configuring the initial VGA timings at
HDMI probe.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The VENC driver currently relies on the omap_dss_device struct to configure the
video output polarity. This makes the VENC interface driver dependent on the
omap_dss_device struct.
Make the VENC driver data maintain it's own polarity field. A panel driver
is expected to call omapdss_venc_invert_vid_out_polarity() before enabling the
interface.
Signed-off-by: Archit Taneja <archit@ti.com>
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The VENC driver currently relies on the omap_dss_device struct to configure the
venc type. This makes the VENC interface driver dependent on the omap_dss_device
struct.
Make the VENC driver data maintain it's own 'venc type' field. A panel driver
is expected to call omapdss_venc_set_type() before enabling the interface or
changing the type via display sysfs attributes.
Signed-off-by: Archit Taneja <archit@ti.com>
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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>
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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>
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The struct omap_dss_dsi_videomode_data holds fields which need to be configured
for DSI to operate in video mode. Rename the struct to dsi_videomode_timings.
One reason to do this is because most of the fields in the struct are timings
related. The other reason is to create a generic op for output specific
timings. This generic op can be considered as a way to set custom or private
timings for the output.
In the case of OMAP, DSI and RFBI require some more timings apart from the
relgular DISPC timings. The structs omap_dss_videomode_timings and rfbi_timings
can be considered as these output specific timings respectively.
Signed-off-by: Archit Taneja <archit@ti.com>
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The DSI driver currently relies on the omap_dss_device struct to know the mode
of operation of the DSI protocol(command or video mode). This makes the DSI
interface driver dependent on the omap_dss_device struct.
Make the DSI driver data maintain it's own operation mode field. The panel
driver is expected to call omapdss_dsi_set_operation_mode() before the interface
is enabled.
Signed-off-by: Archit Taneja <archit@ti.com>
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The SDI driver currently relies on the omap_dss_device struct to configure the
number of data pairs as specified by the panel. This makes the SDI interface
driver dependent on the omap_dss_device struct.
Make the SDI driver data maintain it's own data lines field. A panel driver
is expected to call omapdss_sdi_set_datapairs() before enabling the interface.
Even though we configure the number of data pairs here, this function would be
finally mapped to a generic interface op called set_data_lines. The datapairs
argument type has been changed from u8 to int at some places to be in sync with
the 'set_data_lines' ops of other interfaces.
Signed-off-by: Archit Taneja <archit@ti.com>
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The DPI driver currently relies on the omap_dss_device struct to configure the
number of data lines as specified by the panel. This makes the DPI interface
driver dependent on the omap_dss_device struct.
Make the DPI driver data maintain it's own data lines field. A panel driver
is expected to call omapdss_dpi_set_data_lines() before enabling the interface.
Signed-off-by: Archit Taneja <archit@ti.com>
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The RFBI driver currently relies on the omap_dss_device struct to configure the
number of data lines as specified by the panel. This makes the RFBI interface
driver dependent on the omap_dss_device struct.
Make the RFBI driver data maintain it's own data lines field. A panel driver
is expected to call omapdss_rfbi_set_data_lines() to configure the pixel format
before enabling the interface or calling omap_rfbi_configure().
Signed-off-by: Archit Taneja <archit@ti.com>
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The RFBI driver currently relies on the omap_dss_device struct to receive the
desired pixel size of the panel. This makes the RFBI interface driver dependent
on the omap_dss_device struct.
Make the RFBI driver data maintain it's own pixel format field. A panel driver
is expected to call omapdss_rfbi_set_pixel_size() to configure the pixel format
before enabling the interface or calling omap_rfbi_configure().
Signed-off-by: Archit Taneja <archit@ti.com>
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The DSI driver currently relies on the omap_dss_device struct to receive the
desired pixel format of the panel. This makes the DSI interface driver dependent
on the omap_dss_device struct.
Make the DSI driver data maintain it's own pixel format field. The panel driver
is expected to call omapdss_dsi_set_pixel_format() to configure the pixel format
before the interface is enabled.
Signed-off-by: Archit Taneja <archit@ti.com>
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RFBI drivers requires configuration of the update area. Since we don't support
partial updates, the size to be configures is the panel size itself.
Add a timings field in RFBI's driver data. Apart from x_res and y_res, all the
other fields are configured to an initial value when RFBI is enabled. A panel
driver is expected to call omapdss_rfbi_set_size() configure the size of the
panel.
Signed-off-by: Archit Taneja <archit@ti.com>
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Partial update suppport was removed from DISPC and DSI sometime back. The RFBI
driver still tries to support partial update without the underlying support in
DISPC.
Remove partial update support from RFBI, only support updates which span acros
the whole panel size. This also helps in DSI and RFBI having similar update
ops.
Signed-off-by: Archit Taneja <archit@ti.com>
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The VENC driver currently relies on the timings in omap_dss_device struct to
configure the DISPC and VENC blocks accordingly. This makes the VENC interface
driver dependent on the omap_dss_device struct.
Make the VENC driver data maintain it's own timings field. The panel driver is
expected to call omapdss_venc_set_timings() to set these timings before the
panel is enabled. Call omapdss_venc_set_timings() before enabling
venc output, this is done to atleast have the venc output configured to the
panel's default timings if the DSS user didn't explicitly call the venc panel
driver's set_timings op.
Make the VENC panel driver configure the new timings is the omap_dss_device
struct(dssdev->panel.timings). The VENC driver is responsible for maintaining
only it's own copy of timings.
Signed-off-by: Archit Taneja <archit@ti.com>
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The current venc.c driver contains both the interface and panel driver code.
This makes the driver hard to read, and difficult to understand the work split
between the interface and panel driver and the how the locking works.
This also makes it easier to clearly define the VENC interface ops called by the
panel driver.
Split venc.c into venc.c and venc_panel.c representing the interface and panel
driver respectively. This split is done along the lines of the HDMI interface
and panel drivers.
Signed-off-by: Archit Taneja <archit@ti.com>
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The SDI driver currently relies on the timings in omap_dss_device struct to
configure the DISPC accordingly. This makes the SDI interface driver dependent
on the omap_dss_device struct.
Make the SDI driver data maintain it's own timings field. The panel driver is
expected to call omapdss_sdi_set_timings() to set these timings before the panel
is enabled.
Make the SDI panel driver configure the new timings is the omap_dss_device
struct(dssdev->panel.timings). The SDI driver is responsible for maintaining
only it's own copy of timings.
Signed-off-by: Archit Taneja <archit@ti.com>
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Create function omapdss_sdi_set_timings(). Configuring new timings is done the
same way as before, SDI is disabled, and re-enabled with the new timings in
dssdev. This just moves the code from the panel drivers to the SDI driver.
The panel drivers shouldn't be aware of how SDI manages to configure a new set
of timings. This should be taken care of by the SDI driver itself.
Signed-off-by: Archit Taneja <archit@ti.com>
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The hdmi interface driver exposes functions to the hdmi panel driver to
configure the interface timings maintained by the hdmi driver.
These timings(stored in hdmi.ip_data.cfg) should be protected by the hdmi lock
to ensure they are called sequentially, this is similar to how hdmi enable and
disable functions need locking.
Signed-off-by: Archit Taneja <archit@ti.com>
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timings
The hdmi driver currently updates only the 'code' member of hdmi_config when
the op omapdss_hdmi_display_set_timing() is called by the hdmi panel driver.
The 'timing' field of hdmi_config is updated only when hdmi_power_on is called.
It makes more sense to configure the whole hdmi_config field in the set_timing
op called by the panel driver. This way, we don't need to call both functions
to ensure that our hdmi_config is configured correctly. Also, we don't need to
calculate hdmi_config during hdmi_power_on, or rely on the omap_video_timings
in the panel's omap_dss_device struct.
The default timings of the hdmi panel are represented in a cleaner form. Since
the hdmi output is now configured by it's own copy of timings (in
hdmi.ip_data.cfg), the panel driver needs to set it to a valid value before
enabling hdmi output. We now call omapdss_hdmi_set_timing() before enabling
hdmi output, this is done to atleast have the hdmi output configured to the
panel's default timings if the DSS user didn't call panel driver's set_timings()
op explicitly.
Signed-off-by: Archit Taneja <archit@ti.com>
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During a command mode update using DISPC video port, we may need to swap the
connected overlay manager's width and height when 90 or 270 degree rotation is
done via the panel by changing it's address mode.
Call dss_mgr_set_timings() in update_screen_dispc() before starting the manager
update. The new manager size is updated in the 'timings' field of DSI driver's
private data via omapdss_dsi_set_size(). A panel driver is expected to call this
when performing rotation.
Signed-off-by: Archit Taneja <archit@ti.com>
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DSI command mode panels don't need to configure a full set of timings to
configure DSI, they only require the width and the height of the panel in
pixels.
Use omapdss_dsi_set_size for command mode panels, omapdss_dsi_set_timings is
meant for video mode panels. When performing rotation via chaning the address
mode of the panel, we would need to swap width and height when doing 90 or 270
rotation. Make sure that omapdss_dsi_set_size() makes the new width and height
visible to DSI.
Signed-off-by: Archit Taneja <archit@ti.com>
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The DSI driver currently relies on the timings in omap_dss_device struct to
configure the DISPC and DSI blocks accordingly. This makes the DSI interface
driver dependent on the omap_dss_device struct.
Make the DSI driver data maintain it's own timings field. A DSI video mode panel
driver is expected to call omapdss_dsi_set_timings() to set these timings before
the panel is enabled.
Signed-off-by: Archit Taneja <archit@ti.com>
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The timings maintained in omap_dss_device(dssdev->panel.timings) should be
maintained by the panel driver itself. It's the panel drivers responsibility
to update it if a new set of timings is to be configured. The DPI interface
driver shouldn't be responsible of updating the panel timings, it's responsible
of maintianing it's own copy of timings.
Signed-off-by: Archit Taneja <archit@ti.com>
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The DPI driver currently relies on the timings in omap_dss_device struct to
configure the DISPC accordingly. This makes the DPI interface driver dependent
on the omap_dss_device struct.
Make the DPI driver data maintain it's own timings field. The panel driver is
expected to call dpi_set_timings()(renamed to omapdss_dpi_set_timings) to set
these timings before the panel is enabled.
In the set_timings() op, we still ensure that the omap_dss_device timings
(dssdev->panel.timings) are configured. This will later be configured only by
the DPI panel drivers.
Signed-off-by: Archit Taneja <archit@ti.com>
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The DPI interface driver currently relies on the panel driver to ensure calls
like omapdss_dpi_display_enable() and omapdss_dpi_display_disable() are executed
sequentially. Also, currently, there is no way to protect the DPI driver data.
All DPI panel drivers don't ensure this, and in general, a DPI panel driver
should use it's lock to that ensure it's own driver data and omap_dss_device
states are taken care of, and not worry about the DPI interface.
Add mutex locking in the DPI enable/disable/set_timings ops.
Signed-off-by: Archit Taneja <archit@ti.com>
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The function dss_mgr_set_timings is supposed to apply timings passed by an
interface driver. It is not supposed to change the timings. Add const qualifier
to the omap_video_timings pointer argument in dss_mgr_set_timings().
Signed-off-by: Archit Taneja <archit@ti.com>
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DSS code wrongly assumes that VENC is always available as source for the external
sync signal for the display controller DIGIT channel. One cannot blindly write/read
the value of DSS_CONTROL[15] as in certain processors (e.g., OMAP5) this operation
may not be valid. If the the sync source is not read correctly, the callers of
dss_get_hdmi_venc_clk_source might make wrong assumptions about, for instance,
video timings.
Logic is added to correctly get the sync signal based on the available displays
in the DIGIT channel. The source is set only if both VENC and HDMI are supported.
Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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We have no reason to block in the error handler workqueue, so use msleep.
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Small patch to disable the PLL appropriately before runtime_put in case
an error occurs while enabling the PHY.
Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Replication logic for an overlay depends on the color mode in which it is
configured and the video port width of the manager it is connected to.
video port width now held in dss_lcd_mgr_config in the manager's private
data in APPLY. Use this instead of referring to the omap_dss_device connected to
the manager.
Replication is enabled in the case of TV manager, the video_port_width is set to
a default value of 24 for TV manager.
Make the replication checking an overlay function since it's more of an overlay
characteristic than a display characteristic.
Signed-off-by: Archit Taneja <archit@ti.com>
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