DISPC irqs need to be handled from the compat layer and also in the
future by the omapdrm. To make this possible, this patchs adds a set of
helper functions, so that the irqs can be managed without direct
register reads/writes.

The following functions are added, and all the current direct reg
reads/writes are changed to use these.

u32 dispc_read_irqstatus(void);
void dispc_clear_irqstatus(u32 mask);
u32 dispc_read_irqenable(void);
void dispc_write_irqenable(u32 mask);
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Add new dispc function, dispc_ovl_enabled(). This returns if the overlay
enable bit is set in the registers.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

We need a low level manager-enable function for omapdrm. We have that
function as dispc internal func, _enable_mgr_out().

This patch exposes that function, and renames it to dispc_mgr_enable().
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The current dispc_mgr_enable/disable function are blocking, and do a bit
too much for omapdrm. We'll expose new enable & disable functions that
will just set the bits in the registers in the following patches.

This patch renames the current functions to *_sync, to make it clear
that they are blocking, and also to free up the dispc_mgr_enable/disable
names for these new functions.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Use dss_feat_get_num_ovls() in dispc.c instead of
omap_dss_get_num_overlays() to remove the dependency to overlay.c. Note
that we still have uses of omap_dss_get_num_overlays() in dispc.c, but
these will be moved out in the future patches.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Currently omapdss driver sets up the initial connections between
overlays, overlay manager and a panel, based on default display
parameter coming from the board file or via module parameters.

This is unnecessary, as it's the higher level component that should
decide what display to use and how. This patch removes the code from
omapdss, and implements similar code to omapfb.

The def_disp module parameter and the default display platform_data
parameter are kept in omapdss, but omapdss doesn't do anything with
them. It will just return the default display name with
dss_get_default_display_name() call, which omapfb uses. This is done to
keep the backward compatibility.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.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: NTomi Valkeinen <tomi.valkeinen@ti.com>

dispc_mgr_lclk_rate() cannot currently be called with DIGIT channel
parameter, even if dispc_ovl_lclk_rate() can. Fix this by making
dispc_mgr_lclk_rate() handle DIGIT channel also.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

dss.h contains dispc_irq_handler declaration, even if the function is
dispc.c internal. Remove the declaration.
Signed-off-by: NTomi 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: NTomi 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: NTomi Valkeinen <tomi.valkeinen@ti.com>

We currently have a single function to enable and disable the manager
output for LCD and DIGIT. The functions are a bit complex, as handling
both enable and disable require some extra steps to ensure that the
output is enabled or disabled properly without errors before exiting the
function.

The code can be made simpler to understand by splitting the functions
into separate enable and disable functions. We'll also clean up the
comments and some parameter names at the same time.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Add function that returns the sync lost irq mask for the given channel.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

dispc.c's functions to enable LCD and DIGIT outputs can be cleaned up a
bit by using common functions to set the enable bit and to check if the
output is enabled.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

dispc_ovl_setup() uses struct omap_overlay to get the caps for the
overlay. We can change the code to get the caps directly from dss
features, thus removing the dependency to struct omap_overlay.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

dss_mgr_set_device and dss_mgr_unset_device are declared in dss.h, but
the functions do not exist. Remove the declarations.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Dispc has a bunch of functions used to configure output related
parameters:

- dispc_mgr_set_io_pad_mode
- dispc_mgr_enable_stallmode
- dispc_mgr_enable_fifohandcheck
- dispc_mgr_set_clock_div
- dispc_mgr_set_tft_data_lines
- dispc_lcd_enable_signal_polarity
- dispc_mgr_set_lcd_type_tft

These are all called together, and the configuration values are taken
from struct dss_lcd_mgr_config.

Instead of exposing those individual dispc functions, create a new one,
dispc_mgr_set_lcd_config(), which is used to configure the above
parameters from values in struct dss_lcd_mgr_config.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Add consts to dispc function parameters which do not modify the passed
structs.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

When we enable an output we don't check if we need to register the vsync
isr. This causes us to miss vsync interrupts until somebody changes the
configuration of an overlay or an overlay manager.

Add the registration to dss_mgr_enable to fix the problem.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

If dsi_get_dsidev_from_id() is called with a DSI module id that does not
exist on the board, the function will crash as omap_dss_get_output()
will return NULL.

This happens on omap3 boards when dumping DSI clocks, as the dumping
code will try to get the dsidev for DSI modules 0 and 1, but omap3 only
has DSI module 0.

Also clean up the id -> output mapping, so that if the function is
called with invalid module ID it will return NULL.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Archit Taneja <archit@ti.com>

Merge omap vrfb code to remove direct omap platform dependencies from the
driver.

Merge omapdss code to remove cpu_is_* checks from the driver.

Replace cpu_is_*() check with omap_vrfb_supported().
Signed-off-by: NTomi 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: NTomi Valkeinen <tomi.valkeinen@ti.com>

Now that VRFB driver handles its registers independently, we can remove
the VRFB related code from OMAP's sdrc.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Tony Lindgren <tony@atomide.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: NTomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Vaibhav Hiremath <hvaibhav@ti.com>

This patch converts vrfb library into a platform device, in an effort to
remove omap dependencies.

The platform device is registered in arch/arm/plat-omap/fb.c and
assigned resources depending on whether running on omap2 or omap3.

The vrfb driver will parse those resources and use them to access vrfb
configuration registers and the vrfb virtual rotation areas.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Tony Lindgren <tony@atomide.com>

Now that omapdss no longer uses any platform specific functions, we can
remove the "depends on ARCH_OMAP*" lines from Kconfig.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

When compiling on x86 we get following warnings:

warning: field width specifier ‘*’ expects argument of type ‘int’, but
argument 5 has type ‘size_t’ [-Wformat]

Fix these by casting the size_t to int.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

When compiling on x86, we get compilation errors for dss.c and dispc.c:

drivers/video/omap2/dss/dispc.c:126:11: error: ‘SZ_4K’ undeclared here
(not in a function)

include <linux/sizes.h> to fix compilation.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

cpu_is_* calls are no longer used in omapdss, so the includes for
<plat/cpu.h> can be removed.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Appear to be a copy-paste bug: the code was checking board_data->dsi_enable_pads
while calling board_data->dsi_disable_pads.
Signed-off-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Use omapdss_version in hdmi.c to select the proper hdmi features.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Use omapdss_version in dss.c to select the proper dss features.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Use omapdss_version in dispc.c to select the proper dispc features.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Pass the omapdss_version to dss_features.c and use it to select the
proper dss features.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@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: NTomi Valkeinen <tomi.valkeinen@ti.com>

Merge Linux 3.7-rc1 to get latest upstream changes.

Pull MIPS update from Ralf Baechle:
 "Cleanups and fixes for breakage that occured earlier during this merge
  phase.  Also a few patches that didn't make the first pull request.
  Of those is the Alchemy work that merges code for many of the SOCs and
  evaluation boards thus among other code shrinkage, reduces the number
  of MIPS defconfigs by 5."

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (22 commits)
  MIPS: SNI: Switch RM400 serial to SCCNXP driver
  MIPS: Remove unused empty_bad_pmd_table[] declaration.
  MIPS: MT: Remove kspd.
  MIPS: Malta: Fix section mismatch.
  MIPS: asm-offset.c: Delete unused irq_cpustat_t struct offsets.
  MIPS: Alchemy: Merge PB1100/1500 support into DB1000 code.
  MIPS: Alchemy: merge PB1550 support into DB1550 code
  MIPS: Alchemy: Single kernel for DB1200/1300/1550
  MIPS: Optimize TLB refill for RI/XI configurations.
  MIPS: proc: Cleanup printing of ASEs.
  MIPS: Hardwire detection of DSP ASE Rev 2 for systems, as required.
  MIPS: Add detection of DSP ASE Revision 2.
  MIPS: Optimize pgd_init and pmd_init
  MIPS: perf: Add perf functionality for BMIPS5000
  MIPS: perf: Split the Kconfig option CONFIG_MIPS_MT_SMP
  MIPS: perf: Remove unnecessary #ifdef
  MIPS: perf: Add cpu feature bit for PCI (performance counter interrupt)
  MIPS: perf: Change the "mips_perf_event" table unsupported indicator.
  MIPS: Align swapper_pg_dir to 64K for better TLB Refill code.
  vmlinux.lds.h: Allow architectures to add sections to the front of .bss
  ...