We need the required pixel clock rate when calculating the dss fclk on
SoCs that have a dedicated DSS PLL.

This patch changes the code to pass the pck to the calc functions. The
pck rate is taken into use in the next patch.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The dss parent_clk_name currently points to a clock node which we use to
change the fclk rate. Now that we have CLK_SET_RATE_PARENT properly set,
we can set the rate directly to the fclk node.

However, we still need to calculate the possible clock rates. For this,
we need the rate of the parent of the current parent_clk.

To simplify the code, this patch changes the parent_clk_name to point to
the above mentioned parent, so that we can get the rate directly.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Rename the variables related to DSS fclk's parent: "clk_name" and
"dpll4_m4_ck", to "parent_clk_name" and "parent_clk", which much better
tell what they mean.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Simplify dss_dump_clocks() so that it doesn't make any presumptions
about the DSS fclks nature.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Remove struct dss_clock_info, as it is not usable in a case where DSS
fclk comes from a dedicated PLL. Instead, just use the fclk rate in
place of dss_clock_info, as that is all that's needed.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The driver considers OMAP2 DSS's functional clock as a fixed clock.
However, it can be changed, but the possible dividers are not continuous
which is why it was just handled as a fixed clock.

As a partial fix, this patch changes the code to handle the continous
part of the dividers, from 1 to 6. This let's us handle the OMAP2 fck
the same way as fcks on other OMAPs.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

The DSI-CM driver uses the backlight class so needs to build depend on it.
Signed-off-by: NMark Brown <broonie@linaro.org>
Reviewed-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

We have a bug with omapdrm, where omapdrm calls dispc's pm_runtime
function in atomic context, and dispc's pm_runtime is not marked as
irq_safe:

BUG: sleeping function called from invalid context at drivers/base/power/runtime.c:952

Dispc's runtime PM callbacks are irq safe, so we can just set the
irq_safe flag to fix the issue.

However, in the long term, I'd rather have omapdrm manage the runtime PM
calls in a better way. Calling get/put for every small operation that
touches the dispc registers is very inefficient. It'd be better and
cleaner to have clear "in-use" and "not-in-use" states for dispc, so
that we don't need to do register context restore for small operations,
only to turn dispc off right afterwards.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

While using HDMI connector driver with sil9022 encoder
came across issue where connector driver is probed first.
This resulted in error. A deffered probe solved this.
Most connector drivers need a encoder driver as their
video source. This patch ensures we do a probe defferal
if video source is not present for connector drivers.
Signed-off-by: NSathya Prakash M R <sathyap@ti.com>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

In the old panel device model we had omap_dss_output entities,
representing the encoders in the DSS block. This entity had "device"
field, which pointed to the panel that was using the omap_dss_output.

With the new panel device model, the omap_dss_output is integrated into
omap_dss_device, which now represents a "display entity". Thus the "device"
field, now in omap_dss_device, points to the next entity in the display
entity-chain.

This patch renames the "device" field to "dst", which much better tells
what the field points to.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>

In the old panel device model we had "outputs", which were the encoders
inside OMAP DSS block, and panel devices (omap_dss_device). The panel
devices had a reference to the source of the video data, i.e. reference
to an "output", in a field named "output".

That was somewhat confusing even in the old panel device model, but even
more so with the panel device model where we can have longer chains of
display entities.

This patch renames the "output" field to "src", which much better tells
what the field points to.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>

With all the old panels removed and all the old panel model APIs removed
from the DSS encoders, we can now remove the custom omapdss-bus which
was used in the old panel model.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>

The code handling 'alpha_blending_enabled' sysfs file contains WARN_ONs
in case the feature is not supported on the current platform. Even
though only root can write to the file, anyone can read it, thus causing
the kernel to get tainted and printing an ugly warning.

Instead of having WARN_ONs, return a proper error if the feature is not
supported.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: NRussell King - ARM Linux <linux@arm.linux.org.uk>

Commit 5391e87d (OMAPDSS: remove dispc's dependency to VENC/HDMI)
introduced a possible NULL reference bug in the HDMI driver when setting
timings. In practice the bug shouldn't happen, as the timings have been
verified earlier, and thus the timings should always be ok.

Fix the possible issue by moving the use of the timings pointer inside
the NULL check.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: NDan Carpenter <dan.carpenter@oracle.com>

Now that the old panel drivers have been removed, we can remove the
old-model API and related code from the DSS encoder drivers.

This patch removes the code from the RFBI driver.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>

Now that the old panel drivers have been removed, we can remove the
old-model API and related code from the DSS encoder drivers.

This patch removes the code from the VENC driver.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>

Now that the old panel drivers have been removed, we can remove the
old-model API and related code from the DSS encoder drivers.

This patch removes the code from the SDI driver.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>

Now that the old panel drivers have been removed, we can remove the
old-model API and related code from the DSS encoder drivers.

This patch removes the code from the DSI driver.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>

Now that the old panel drivers have been removed, we can remove the
old-model API and related code from the DSS encoder drivers.

This patch removes the code from the HDMI driver.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>

Now that the old panel drivers have been removed, we can remove the
old-model API and related code from the DSS encoder drivers.

This patch removes the code from the DPI driver.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>

The board files now use the new panel drivers, making the old panel
drivers obsolete.

Remove the old panel drivers, Kconfig and Makefile entries, and the
panels' platform data structs.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>

Regulator handling for DPI and SDI is currently handled in the core.c,
using the 'virtual' omapdss platform device. Nowadays we have proper
devices for both DPI and SDI, and so we can handle the regulators inside
the respective drivers.

This patch moves the regulator handling for DPI into dpi.c.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>

Regulator handling for DPI and SDI is currently handled in the core.c,
using the 'virtual' omapdss platform device. Nowadays we have proper
devices for both DPI and SDI, and so we can handle the regulators inside
the respective drivers.

This patch moves the regulator handling for SDI into sdi.c.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>

OMAPDSS's RFBI encoder driver has not been working for some time. The
Nokia N800 is the only board in the mainline that uses RFBI, but it has
never been fully functional.

The RFBI driver needs to be updated to the new panel model, but as
the driver is rather unmaintained and there's no way to test the
changes, let's mark the driver as broken.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: NArchit Taneja <archit@ti.com>

ti_hdmi_4xxx_basic_configure() is supposed to initialize the AVI
infoframe data in the ip_data container. However, the function actually
takes a copy of the infoframe from the ip_data, and then goes on
initializing that copy. The initialized data is never copied back to the
ip_data container, thus the infoframe in ip_data is left always zero.

Afaik, this doesn't really cause any issues in the current mainline, as
we don't use the advanced features offered by the AVI infoframe.

This patch fixes the initialization of the AVI infoframe.
Signed-off-by: NMythri P K <mythripk@ti.com>
[tomi.valkeinen@ti.com: updated the description]
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

connector-analog-tv.c uses omap_dss_pal_timings, defined in omapdss's
venc.c, for default timings. omap_dss_pal_timings only exists when VENC
is enabled in the kernel config, so disabling VENC breaks
omap_dss_pal_timings connector-analog-tv compilation.

Instead of adding dependency to VENC, add internal default timings to
the connector driver, because the connector driver should not depend on
VENC, and it can be used with any other analog TV encoder.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Sweep of the simple cases.

Cc: netdev@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

DPI is supposed to skip odd dividers in the clock path when the pixel
clock is higher than 100MHz. The code, however, defines the pixel clock
limit as 1MHz. This causes the driver to skip valid clock dividers,
possibly making the pixel clock to be further away from the requested
one than necessary.

Fix the clock limit to 100MHz.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Cc: NeilBrown <neilb@suse.de>

The usage of strict_strtoul() is not preferred, because
strict_strtoul() is obsolete. Thus, kstrtoul() should be
used.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Add a comment to Kconfig to clarify the difference between the two
display driver directories.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Add NEC NL8048HL11 panel driver which uses the new DSS device model
and DSS ops.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Add TPO TD043MTEA1 panel driver which uses the new DSS device model
and DSS ops.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: NGrazvydas Ignotas <notasas@gmail.com>

Add Sharp LS037V7DW01 panel driver which uses the new DSS device model
and DSS ops.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Add LG.Philips LB035Q02 panel driver which uses the new DSS device model
and DSS ops.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Add Sony ACX565AKM panel driver which uses the new DSS device model and
DSS ops.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: NAaro Koskinen <aaro.koskinen@iki.fi>

Add DSI Command Mode panel driver which uses the new DSS device model
and DSS ops. This driver only supports a very basic set of features
which should be common to all DSI command mode panels.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Add simple DPI Panel driver which uses the new DSS device model and DSS
ops. A "simple" panel means one that does not require any special setup.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Add Analog TV Connector driver which uses the new DSS device model and
DSS ops.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Add HDMI Connector driver which uses the new DSS device model and DSS
ops.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>

Add DVI Connector driver which uses the new DSS device model and DSS
ops.
Signed-off-by: NTomi Valkeinen <tomi.valkeinen@ti.com>