Commit Graph

276296 Commits

Author SHA1 Message Date
Ricardo Neri
b17ce11732 ASoC: OMAP: HDMI: Introduce driver data for audio codec
Under the new DSS architecture for HDMI, there is a clear separation
between general DSS code and HDMI IP-specific data. Functions
that require access to the HDMI driver IP-specific data receive an
hdmi_ip_data structure. The ASoC codec require access to such
IP-specific data. Then, instead of accessing it directly, it will be
passed as codec driver data. This also helps to have a clear separation
between DSS and ASoC portions of the code.

Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-01-05 10:34:47 +02:00
Chandrabhanu Mahapatra
7282f1b7c9 OMAPDSS: DISPC: Update Scaling Clock Logic
Clock requirements for scaling in OMAP2, OMAP3 and OMAP4 are different. In
OMAP2 and OMAP3 the required clock rate is a function of pixel clock, vertical
downscale ratio and horizontal downscale ratio whereas in OMAP4 it is a
function of pixel clock and horizontal downscale ratio only. Selection of 3-tap
vs 5-tap coefficients depends on clock rate line buffer width in OMAP3 whereas
in OMAP4 it is independent of clock rate and line buffer width. In OMAP2 3-tap
for vertical and 5-tap for horizontal scaling is used. In OMAP4 5-tap is used
both for horizontal and vertical scaling for better performance. Also, the
number and width of line buffers differs in OMAP3 and OMAP4.

So, clock functions have been fined tuned for OMAP3 and support has been added
added for OMAP4. This code has been tested on OMAP2, OMAP3 and OMAP4, and
scaling issues due to clock errors have been resolved.

Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-01-02 08:51:29 +02:00
Chandrabhanu Mahapatra
debd90749b OMAPDSS: DISPC: Update Fir Coefficients
The FIR coefficients present in kernel are being updated to new coefficients
consisting of 24 coefficient tables, with 12 each for 3 tap and 5 tap scenario,
which are chosen on the basis of DISPC up/downsampling filters M value. M is
the inverse of low pass cut off frequency of the sampling filter. For vertical
scaling 3 tap or 5 tap tables are used based on the clock rate and width of
the line buffer whereas in OMAP2 3 tap is always used. For horizontal scaling
however 5 tap tables are always used.

New coefficients and the corresponding logic have been tested on OMAP2, OMAP3
and OMAP4. Horizontal and vertical scaling worked fine except for some 3 tap
vs 5 tap issue during vertical upscaling and clock failing issues which is
acknowledged in the next patch. Vertical upscaling was found to perform better
under 5 taps. The 24 coefficient tables have been moved to another file
dispc_coefs.c for proper maintainance.

This code is written based on code written by Lajos Molnar <lajos@ti.com> in
Android Kernel for scaling. Lajos Molnar <lajos@ti.com> had fine tuned the FIR
coefficient selection process and reduced outliness and blockiness around
images when upscaling more than 2 times.

Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-01-02 08:51:29 +02:00
Rob Clark
1f3f53ae51 OMAPDSS: APPLY: fix NULL pointer deref when mgr is not set
extra_info_update_ongoing() goes through all overlays, but doesn't check
if the overlay is connected to a manager. This leads to a crash whenever
an overlay has been detached.

Add a check to skip the non-connected overlays.

Reported-by: Rob Clark <rob@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-01-02 08:51:28 +02:00
Archit Taneja
6ea9b31792 OMAPDSS: Displays: Make PICODLP driver depend on DPI
Make PICODLP driver on OMAP2_DSS_DPI since it is the display interface it uses.

Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-01-02 08:51:28 +02:00
Archit Taneja
d95c03f3fa OMAPDSS: Panel NEC: Set omap_dss_device states correctly
The display state parameter of omap_dss_device struct is not being set correctly
in the panel driver NEC panel driver panel-nec-nl8048hl11-01b.c. Set the correct
states in the panel's enable/disable/suspend/resume functions.

CC: Erik Gilling <konkers@android.com>
Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-01-02 08:51:27 +02:00
Archit Taneja
84309f1632 OMAPDSS: DSI: Fix HSDIV related PLL info in dsi_dump_clocks()
The clock names of DSI_PLL_HSDIV_DISPC and DSI_PLL_HSDIV_DSI was made
dynamic based on the current value of DISPC and DSI FCLK sources. This
doesn't need to be done since we are just interested in the clock names,
and not the current clock sources for DISPC and DSI FCLKs.

Use only the generic and omap specific names for the DSI PLL's HSDIV
clocks.

Signed-off-by: Archit Taneja <archit@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-01-02 08:51:27 +02:00
Tomi Valkeinen
54540d41aa OMAPDSS: APPLY: move simple_check functions
The functions dss_ovl_simple_check() and dss_mgr_simple_check() are not
really part of the apply mechanism, and can be moved to overlay.c and
manager.c.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-01-02 08:51:26 +02:00
Rob Clark
00f17e4560 OMAPDSS: fix potential NULL pointer ref in OCP_ERR handling path
The dispc's error handler tries to disable all outputs when OCP_ERR
happens. However, the code doesn't check if there actually is a display
on each particular output, nor if there's a driver for the display. This
may lead to NULL pointer reference.

Signed-off-by: Rob Clark <rob@ti.com>
[tomi.valkeinen@ti.com: added patch description]
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-01-02 08:51:26 +02:00
Axel Lin
f806f9b6b8 video: omap: convert drivers/video/omap/* to use module_platform_driver()
This patch converts the drivers in drivers/video/omap/* to use the
module_platform_driver() macro which makes the code smaller and a bit
simpler.

Cc: Jonathan McDowell <noodles@earth.li>
Cc: Cory Maccarrone <darkstar6262@gmail.com>
Cc: Laurent Gonzalez <palmte.linux@free.fr>
Cc: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-01-02 08:51:25 +02:00
Axel Lin
f990544125 video: omap: Staticise non-exported symbols
These symbols are not used outside it's driver so no need to
make the symbol global.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-01-02 08:51:25 +02:00
Tomi Valkeinen
6ac48d1e3a OMAPDSS: APPLY: move check functions
The functions dss_ovl_check, dss_mgr_check_zorder, dss_mgr_check in
apply.c are not really part of the apply mechanism, and can be moved to
overlay.c and manager.c.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-01-02 08:51:25 +02:00
Tomi Valkeinen
5af661ce1a OMAPDSS: APPLY: remove unused variables
dss_mgr_check_zorder() has two unused variables. Remove them.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2012-01-02 08:51:24 +02:00
Tomi Valkeinen
04576d415e OMAPDSS: APPLY: write fifo thresholds only if changed
Current code will always write fifo threshold values to the register,
even if they are the same as previously. Separate the setting of fifo
fields into a separate function, and only set new values if they are
different than the old ones.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:59 +02:00
Tomi Valkeinen
75ae118a00 OMAPDSS: APPLY: add dss_setup_fifos
Currently fifo threshold configuration is done per overlay or per
manager. However, when a fifo size configuration is added, we need to
always configure the thresholds for all overlays.

This patch prepares for that by changing the fifo threshold
configuration to always handle all overlays.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:59 +02:00
Tomi Valkeinen
a6b24f8360 OMAPDSS: APPLY: simplify dss_mgr_enable
dss_mgr_enable() has some extra assigns to mp->enabled, which can be
removed.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:58 +02:00
Tomi Valkeinen
82153eda07 OMAPDSS: APPLY: add op->enabling
When we are enabling an overlay, there's a point in time when the
overlay is not actually enabled yet (nor do we want it to be enabled),
but we do want to check if the configuration for the overlay is valid,
and to calculate correct fifo thresholds for the soon-to-be-enabled
overlay.

Current code handled this in a hacky way, setting op->enabled to true
temporarily when calling functions that need to consider the state when
the overlay is enabled.

This patch makes this a bit cleaner, adding "enabling" field, which is
set when the overlay is not yet enabled but should be considered in the
checks and calculations.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:58 +02:00
Tomi Valkeinen
153b6e7357 OMAPDSS: APPLY: cleanup extra_info_update_ongoing
Trivial cleanup for extra_info_update_ongoing(), making the function a
bit cleaner.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:57 +02:00
Tomi Valkeinen
3ab15b2aa7 OMAPDSS: APPLY: add dss_set_go_bits()
Currently dss_write_regs() implicitely sets the GO bits for all managers
with shadow dirty flags set. This is a bit misleading, as one does not
presume "write registers" function to also set the GO bit.

Thus this patch splits the setting of GO bits into a separate function,
dss_set_go_bits, which is used after writing the registers.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:56 +02:00
Tomi Valkeinen
5b2141719a OMAPDSS: APPLY: clear shadow dirty flags only if GO had been set
In the apply irq handler the code currently clears the shadow dirty
flags whenever the manager in question is not busy (i.e. GO bit is
down). However, this is not quite right, as the GO bit may have never
been set.

While not done in the current code, the above would cause bug in
scenario where the registers are written, and thus shadow_dirty flag is
set, but the GO bit will be set only later. In this case the
shadow_dirty flags would be cleared, even if the HW is not using the new
configurations.

This patch fixes the issue by clearing the shadow flags only when the GO
bit is clear, and the GO bit had been set.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:56 +02:00
Tomi Valkeinen
9f808956d3 OMAPDSS: APPLY: fix need_isr
need_isr() should return true whenever there's work that needs to be
handled in the VSYNC/FRAMEDONE irq handler. However, need_isr() is
missing some cases where we need the irq handler.

This patch adds checks for shadow dirty flags, so that the irq handler
is started/kept running while shadow dirty flags are set.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:55 +02:00
Tomi Valkeinen
cc372d84e2 OMAPDSS: APPLY: fix extra_info_update_ongoing
extra_info_update_ongoing() skipped checks for overlays that were marked
as disabled. This doesn't work, as the enable status of an overlay is in
the extra_info group, and thus extra_info_update_ongoing() reports false
when we are disabling an overlay. This causes
wait_pending_extra_info_updates() to not wait for the ongoing overlay
disable.

This patch changes extra_info_update_ongoing() to check the state of
overlays marked as disabled.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:55 +02:00
Tomi Valkeinen
33ca237f80 OMAPDSS: check the return value of dss_mgr_enable()
Now that dss_mgr_enable returns an error value, check it in all the
places dss_mgr_enable is used, and bail out properly.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:54 +02:00
Tomi Valkeinen
2a4ee7ee68 OMAPDSS: APPLY: add return value to dss_mgr_enable()
Now that dss_mgr_enable() can fail due to checks, make it return the
error value.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:54 +02:00
Tomi Valkeinen
39518356cc OMAPDSS: APPLY: add checking of ovls/mgrs settings
Add checks for overlay and manager settings. The checks are a bit
complex, as we need to observe the bigger picture instead of overlays
and managers independently. Things like the used display and the zorder
of other overlays affect the validity of the settings.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:53 +02:00
Tomi Valkeinen
f17d04fbbb OMAPDSS: APPLY: add dss_mgr_simple_check()
Add dss_mgr_simple_check() which is used to check the validity of
certain manager attributes. Only attributes that can be checked
independently, without knowing the display being used, is done here
(thus "simple").

We can use this function in dss_mgr_set_info().

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:53 +02:00
Tomi Valkeinen
fcc764dca8 OMAPDSS: APPLY: add dss_ovl_simple_check()
Add dss_ovl_simple_check() which is used to check the validity of
certain overlay attributes. Only attributes that can be checked
independently, without knowing the display being used, is done here
(thus "simple").

We can use this function in dss_ovl_set_info().

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:52 +02:00
Tomi Valkeinen
9d11c321a8 OMAPDSS: Add comments about blocking of ovl/mgr functions
Add comments specifying what ovl/mgr functions may block.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:52 +02:00
Tomi Valkeinen
e70f98acaa OMAPDSS: APPLY: remove runtime_get
apply.c no longer touches any registers if an output is not enabled.
This means that we don't need to do dispc_runtime_get() anymore, and the
calls can be removed.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:51 +02:00
Tomi Valkeinen
f1577ce180 OMAPDSS: APPLY: add wait_pending_extra_info_updates()
Add wait_pending_extra_info_updates() function which can be used to wait
until any extra_info changes have been taken into use by the hardware.
This can be only called when holding the apply mutex, so that other
threads cannot insert new extra_info changes.

This will be used to handle fifo-configurations.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:51 +02:00
Tomi Valkeinen
e4f7ad702e OMAPDSS: APPLY: skip enable/disable if already enabled/disabled
Add checks to dss_mgr_enable, dss_mgr_disable, dss_ovl_enable,
dss_ovl_disable that check if the state is already the same as given in
the parameters, and exit if so.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:50 +02:00
Tomi Valkeinen
841c09c797 OMAPDSS: APPLY: add dss_apply_ovl_enable()
Add a helper function dss_apply_ovl_enable(), which is similar to the
main apply() function: dss_apply_ovl_enable() applies the given overlay
enable-status to ovl_priv_data, and sets the dirty flag.

The difference between the helper function and the previous direct use
of the fields is that the helper function will not do anything if the
enable state is already the same as given in the parameter.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:50 +02:00
Tomi Valkeinen
ff4733dcf5 OMAPDSS: APPLY: remove device_changed field
omap_overlay_manager contains device_changed field, which no longer has
any use. So remove the field and the few places where it is touched.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:49 +02:00
Tomi Valkeinen
0b53f17971 OMAPDSS: APPLY: rename dirty & shadow_dirty
Rename ovl_priv_data's and mgr_priv_data's dirty and shadow_dirty fields
to info_dirty and shadow_info_dirty to better reflect what they mean.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:48 +02:00
Tomi Valkeinen
6dc802e290 OMAPDSS: APPLY: move fifo thresholds to extra_info set
Setting overlay's fifo thresholds is currently handled at the same time
as other overlay attributes. This is not right, as the normal attributes
should only affect one overlay and manager, but changing the fifo
thresholds are needed in cases like fifo-merge, where multiple managers
are affected.

This patch moves the channel field into the "extra_info" set, handled
together with channel and enabled-status.

This also lets us to calculate the fifos only when needed, specifically,
when an overlay or a manager is enabled.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:48 +02:00
Tomi Valkeinen
5d5a97a6fb OMAPDSS: APPLY: move channel-field to extra_info set
Setting overlay's output channel is currently handled at the same time
as other overlay attributes. This is not right, as the normal attributes
should only affect one overlay and manager, but changing the channel
affects two managers.

This patch moves the channel field into the "extra_info" set, handled
together with enabled-status.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:47 +02:00
Tomi Valkeinen
c1a9febfaf OMAPDSS: APPLY: move ovl->info to apply.c
struct omap_overlayr contains info and info_dirty fields, both of which
should be internal to apply.c.

This patch moves those fields into ovl_priv data, and names them
user_info and user_info_dirty.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:47 +02:00
Tomi Valkeinen
388c4c6cbb OMAPDSS: APPLY: move mgr->info to apply.c
struct omap_overlay_manager contains info and info_dirty fields, both of
which should be internal to apply.c.

This patch moves those fields into mgr_priv data, and names them
user_info and user_info_dirty.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:46 +02:00
Tomi Valkeinen
7609893c63 OMAPDSS: APPLY: clean up isr_handler
Add a helper function mgr_clear_shadow_dirty(), which clears the
shadow_dirty flags for the given manager and for the overlays on that
manager.

This lets us simplify the code in the dss_apply_irq_handler().

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:46 +02:00
Tomi Valkeinen
34861378a5 OMAPDSS: APPLY: add updating flag
Add "updating" flag to mgr_priv_data, which is used to track whether the
manager is currently actively working, i.e. updating the screen.

For auto-update displays updating is always true when the display is
enabled, but for manual update displays the flag is true only during
frame transfers.

The flag is used to manage registers properly, for example when updating
is false and a register for a manager is written, there's no need to set
shadow_dirty flag nor set the GO bit, as the settings will be taken into
use by the HW automatically when the output is enabled.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:45 +02:00
Tomi Valkeinen
7d1365c998 OMAPDSS: DISPC: add dispc_mgr_get_framedone_irq
Add dispc_mgr_get_framedone_irq() which returns the irq number for
FRAMEDONE for the given channel.

Note that the function returns always 0 for DIGIT channel, even if OMAP4
does have FRAMEDONE_TV interrupt. The reason for this is that this
function is currently used only to track manual updates, and thus
FRAMEDONE_TV is not needed.

If there's need in the future to also get the FRAMEDONE_TV this needs
revisiting. However, as FRAMEDONE_TV doesn't exist on OMAP2/3, the use
of this function for that purpose needs some extra code to handle the
OMAP2/3 case.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:45 +02:00
Tomi Valkeinen
75c949653f OMAPDSS: APPLY: rewrite register writing
The functions writing to the DISPC registers in apply.c are more complex
than needed. This patch cleans things up.

Two helper functions are added: need_isr(), which returns if an isr for
VSYNC is needed, and need_go(), which tells if there has been a write to
the shadow registers and we need to set the GO bit.

The functions that call the actual dispc write functions will set the
dirty and shadow_dirty flags themselves, instead of that being done on
the caller side. The writing functions also check if the dirty flag is
even set, and return immediately if not.

This allows us to clean up dss_write_regs().

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:44 +02:00
Tomi Valkeinen
aaa874a985 OMAPDSS: APPLY: rewrite overlay enable/disable
Overlays are currently enabled and disabled with a boolean in the struct
omap_overlay_info. The overlay info is set with ovl->set_overlay_info(),
and made into use with mgr->apply().

This doesn't work properly, as the enable/disable status may affect also
other overlays, for example when using fifo-merge. Thus the enabling and
disabling of the overlay needs to be done outside the normal overlay
configuration.

This patch achieves that by doing the following things:

1) Add function pointers to struct omap_overlay: enable(), disable() and
is_enabled(). These are used to do the obvious. The functions may block.

2) Move the "enabled" field from struct omap_overlay to ovl_priv_data.

3) Add a new route for settings to be applied to the HW, called
"extra_info". The status of the normal info and extra_info are tracked
separately.

The point here is to allow the normal info to be changed and
applied in non-blocking matter, whereas the extra_info can only be
changed when holding the mutex. This makes it possible to, for example,
set the overlay enable flag, apply it, and wait until the HW has taken
the flag into use.

This is not possible if the enable flag would be in the normal info, as
a new value for the flag could be set at any time from the users of
omapdss.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:44 +02:00
Tomi Valkeinen
43a972d96b OMAPDSS: APPLY: add busy field to mgr_priv_data
Add a new field to mgr_priv data, "busy", which is used to track the
status of GO bit with the manager. As manual update displays never use
the GO bit, the field is always false for managers used for manual
update displays.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:43 +02:00
Tomi Valkeinen
bf213523fe OMAPDSS: APPLY: move mgr->enabled to mgr_priv_data
struct omap_overlay_manager contains "enabled"-field, used to track if
the manager is enabled or not. This field should be internal to apply.c.

This patch moves the field to mgr_priv_data, and applies the necessary
locking when accessing the field.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:43 +02:00
Tomi Valkeinen
9a147a65de OMAPDSS: DSI: call mgr_enable/disable for cmd mode displays
The current code uses dsi_video_mode_enable/disable functions to
enable/disable DISPC output for video mode displays. For command mode
displays we have no notion in the DISPC side of whether the panel is
enabled, except when a dss_mgr_start_update() call is made.

However, to properly maintain the DISPC state in apply.c, we need to
know if a manager used for a manual update display is currently in use.

This patch achieves that by changing dsi_video_mode_enable/disable to
dsi_enable/disable_video_output, which is called by both video and
command mode displays. For video mode displays it starts the actual
pixel stream, as it did before. For command mode displays it doesn't do
anything else than mark that the manager is currently in use.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:42 +02:00
Tomi Valkeinen
e0a2aa5b3d OMAPDSS: APPLY: add missing uses of spinlock
The functions in apply.c, called mostly via function pointers in overlay
and overlay_manager structs, will be divided into two groups. The other
group will not sleep and can be called from interrupts, and the other
group may sleep.

The idea is that the non-sleeping functions may only change certain
settings in overlays and managers, and those settings may only affect
the particular overlay/manager. For example, set the base address of the
overlay.

The blocking functions, however, will handle more complex configuration
changes. For example, when an overlay is enabled and fifo-merge feature
is used, we need to do the enable in multiple steps, waiting in between,
and the change affects multiple overlays and managers.

apply.c already contains a spinlock, which has been used to protect
(badly) the dss_data. This patch adds locks/unlocks of the spinlock to
the missing places, and the lock should now properly protect dss_data.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:42 +02:00
Tomi Valkeinen
5558db3fdd OMAPDSS: APPLY: add mutex
The functions in apply.c, called mostly via function pointers in overlay
and overlay_manager structs, will be divided into two groups. The first
group will not sleep and can be called from interrupts, and the second
group may sleep.

The idea is that the non-sleeping functions may only change certain
settings in overlays and managers, and those settings may only affect
the particular overlay/manager. For example, set the base address of the
overlay.

The blocking functions, however, will handle more complex configuration
changes. For example, when an overlay is enabled and fifo-merge feature
is used, we need to do the enable in multiple steps, waiting in between,
and the change affects multiple overlays and managers.

This patch adds the mutex which is used in the blocking functions to
have exclusive access to overlays and overlay managers.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:41 +02:00
Tomi Valkeinen
5738b63313 OMAPDSS: remove ovl/mgr check-code temporarily
DSS currently tries to check that the given overlay and overlay manager
settings are acceptable, but the code does not work quite properly.
Things may change between the check and the actual use of the settings.

Furthermore, the following patches will rewrite how settings are
configured and managed, and trying to keep the (broken) settings
checking working during the rewrite would be very difficult.

This patch removes the checking code, and a working version of checking
will be added back after the settings rewrite has been done.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:40 +02:00
Tomi Valkeinen
eb70d739ad OMAPDSS: APPLY: move mgr funcs to apply.c
apply.c will handle the management of dispc in the future patches. This
patch moves overlay manager related functions to apply.c so that they
will have access to the private data and functions of apply.c.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2011-12-02 08:54:40 +02:00