OMAPDSS: remove omap_dss_device's suspend/resume

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>
OMAPDSS: remove dispc_irq_handler declaration

dss.h contains dispc_irq_handler declaration, even if the function is
dispc.c internal. Remove the declaration.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
OMAPDSS: DISPC: fix dispc_mgr_lclk_rate for DIGIT output

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: Tomi Valkeinen <tomi.valkeinen@ti.com>
OMAPDSS: DISPC: use dss_feat_get_num_ovls()

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: Tomi Valkeinen <tomi.valkeinen@ti.com>
OMAPDSS: DISPC: rename dispc_mgr_enable/disable to _sync

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: Tomi Valkeinen <tomi.valkeinen@ti.com>
OMAPDSS: DISPC: make _enable_mgr_out public as "dispc_mgr_enable"

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: Tomi Valkeinen <tomi.valkeinen@ti.com>
OMAPDSS: add dispc_ovl_enabled()

Add new dispc function, dispc_ovl_enabled(). This returns if the overlay
enable bit is set in the registers.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
OMAPDSS: DISPC: Add IRQ enable/status helpers

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: Tomi Valkeinen <tomi.valkeinen@ti.com>
OMAPDSS: HDMI: split power_on/off to two parts

There's currently just one power-on function for HDMI, which enables the
IP and the video output. When reading EDID or detecting if a monitor is
connected, we don't need the video output.

Enabling the video output for these operations is not a big problem in
itself, but the quick enable/disable cycles caused by the operations
seem to cause sync lost errors from time to time. Also, this makes it
possible to read the EDID before the full video path has been set up.

This patch splits the hdmi_power_on into two parts, hdmi_power_on_core
and hdmi_power_on_full. The "full" version does what hdmi_power_on does
currently, and hdmi_power_on_core only enables the core IP. Similar
changes are made for power_off.

Note that these don't allow the HDMI IP to be first enabled, and later
enable the video output, but the HDMI IP will first need to be powered
off before calling the full version. So this is rather limited
implementation, but it fills the needs for reading EDID.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Ricardo Neri <ricardo.neri@ti.com>
OMAPDSS: HDMI: use core power on/off with edid & detect

This patch makes use of the hdmi_power_[on|off]_core() functions added
in the previous patch. The functions are used when reading EDID or
detecting if a monitor is connected.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Ricardo Neri <ricardo.neri@ti.com>
OMAPDSS: HDMI: add 1920x1200 video mode

Add 1920x1200 video mode to hdmi driver's static modelist.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Ricardo Neri <ricardo.neri@ti.com>
OMAPDSS: HDMI: make hdmi pclk check more permissive

The hdmi driver tries to find the given video timings from its static
list of timings, to find the required ID for the mode. The check tries
to find exact match for the pixel clock, among other checks.

with omapfb driver there can be some amount of error in the give pixel
clock, as the pixel clock is converted between Hz and ps, thus the
hdmi's check fails to find the mode.

This patch makes the check more allowing, by rounding the pixel clocks
to nearest MHz.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Ricardo Neri <ricardo.neri@ti.com>
OMAPFB: remove use of extended edid block

It seems that using the second EDID block causes more problems than is
of any help. The first mode in the extended block will get
FB_MODE_IS_FIRST set, which will override the first mode from the first
EDID block, thus making the default videomode selection not to work
properly.

This patch removes the use of the extended edid block for now.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
OMAPFB: improve mode selection from EDID

The current omapfb code goes over all the modes found from the monitors
EDID data, and searches for a mode that is compatible with the DSS
hardware and has the highest x-res.

While this works ok as such, it proves problematic when using DSI PLL
for pixel clock. Calculating DSI PLL dividers is not the fastest of the
operations, and while doing it for one mode is usually ok, doing it for
20 modes is noticable.

Also, the first mode given in the EDID data should be the native mode of
the monitor, and thus also the best mode, so if that can be used, no
need to look further.

This patch changes the code to use the first mode that is compatible
with the DSS hardware.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
OMAPDSS: fix DSI2 PLL clk names

dss_generic_clk_source_names is missing the names for clocks from DSI2
PLL. Add them.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
OMAPDSS: DISPC: fix loop in error handler

The dispc's error handler has a loop inside another loop, and both use
the same loop variable. This is clearly wrong, and this patch makes a
new variable for the inner loop.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
OMAPDSS: DISPC: remove dssdev depependency from error handler

The dispc error handler tries to "fix" issues by disabling and enabling
panel. This is problematic, as we're trying to remove the dependency
from omapdss to the omap_dss_devices. It's also racy, and doesn't really
fix anything.

This patch removes the use of omap_dss_device from the error handler,
and just disables and enables the associated overlay manager. This
should produce similar results as the previous solution, without using
dssdev.

However, the error handling is still horrible. But the problem boils
down to one question, to which I don't have a clear answer: what to do
when a HW error happens?

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
OMAPDSS: HDMI: OMAP4: Complete register definitions for wrapper

Add definitions for missing registers in the HDMI wrapper. Also, order
the registers by offset to improve readability.

Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
OMAPDSS: HDMI: OMAP4: Complete dumping of wrapper registers

Add missing registers when dumping the HDMI wrapper. Also, order the dump by
offset to improve readability.

Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
OMAPDSS: HDMI: OMAP4: Complete register definitions for DPLL

Add missing register definitions for spread spectrum clocking.

Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>