video: simple-panel: depend on OFDEVICE ...

Fixes:
In function `simple_panel_ioctl':
undefined reference to `of_get_display_timings'

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/misc'

video: backlight-pwm: Add regulator support ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: backlight-pwm: Add error message ...

Inform the user when we can't find a pwm for the backlight driver.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: ipuv3: print error message when no modes are found ...

This is a common error, so print a message to inform the user
what went wrong.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: simple-panel: Add support for device tree provided nodes ...

This adds support for display timings provided from device tree.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: simple-panel: Add debug/error messages ...

Let the driver be more informative when something goes wrong.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: ipuv3: imx-ldb: Support video modes in ldb node ...

We used to support video modes directly in the ldb device node, that
was lost in: 5bda17e video: ipuv3: Replace ipu_output with VPL.
Add this support back. Also drop duplicate vpl ioctl forwarding for
several calls.

With this patch modes can either be retrieved from the ldb node as
originally done or from the panel remote port.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: ipuv3: imx-ldb: remove unused variable ...

endpoint is set but not used. Remove the code.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: ipuv3: Do not crash when no mode is found ...

When something is missing in the device tree or not all necessary
drivers are compiled in it may happen that no valid mode is found.
Do not crash in this case but print an error message.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: imx-hdmi: Remove unused 'regmap' structure ...

As regmap is not used in Barebox we can remove this field
from the imx_hdmi struct.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

introduce strerrorp ...

putting an error pointer into strerror can be a bit confusing since
strerror takes a positive error code but PTR_ERR returns a negative
number, so we have to do strerror(-PTR_ERR(errp)). Some places got
this wrong already, so introduce a strerrorp function which directly
takes an error pointer.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: imx: assert that image buffer doesn't cross a 4 MiB boundary ...

The reference manual (for the i.MX25 in my case) states:

	This field must start at a location that enables a complete
	picture to be stored in a 4 Mbyte memory boundary (A [21:0]). A
	[31:22] has a fixed value for a picture’s image.

Check this condition for user-supplied framebuffer values and enforce it
for driver-allocated buffers.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: imx-hdmi: depend on EDID support ...

HDMI support is not generally useful without EDID support.

Fixes:
In function `imx_hdmi_ioctl':
undefined reference to `edid_read_i2c'
undefined reference to `edid_to_display_timings'

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: vpl: depend on OFTREE ...

VPL uses the of_graph bindings, which are only available if OFTREE
support is compiled in.

Also fix the drivers using VPL to depend on OFTREE.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/fb-imx-ipu-v3'

video: fbcon: needs console support ...

Fixes:
In function `register_fbconsole':
drivers/video/fbconsole.c:425: undefined reference to `console_register

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fb: fbconsole: Add missing blits ...

When using offscreen rendering we need some more points where we
blit the offscreen buffer to the screen. Add them.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fb: fbconsole: print cursor after clearing the screen ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

gui: Use fb provided shadowfb for offscreen rendering ...

The fb core now has builtin support for offscreen rendering, use
this and drop offscreen handling in the gui code.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fb: Add shadowfb support ...

For speeding up rendering we need shadow framebuffers. This is currently
implemented in the gui functions. This does not work properly when two
users (splash and fbconsole) use the same framebuffer since in this case
two different shadow framebuffers will be used. This patch implements
shadowfb handling in the fb core directly. With this the fb device gets
a parameter 'shadowfb'. When this is true the fb core will allocate a
shadow fb and provide it to the users.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fb: return original fb_info in FBIOGET_SCREENINFO ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: fbconsole: do not enter when we are already in fbconsole ...

Make it possible to issue console messages from inside the fbconsole
code without entering the fbconsole again.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: simple-panel: mode support depends on I2C and EDID ...

Reading modes from EDID EEPROMs requires both I2C and EDID support to
be available. As the simple panel driver is also useful without mode
reading support, only built it in if the requirements are met.

Fixes:
In function `simple_panel_get_modes':
simple-panel.c:88: undefined reference to `of_find_i2c_adapter_by_node'
simple-panel.c:91: undefined reference to `edid_read_i2c'
simple-panel.c:95: undefined reference to `edid_to_display_timings'

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: MTL017: depend on I2C ...

This driver uses I2C functions and isn't useful without them.

Fixes:
In function `mtl017_init':
drivers/video/mtl017.c:278: undefined reference to `i2c_bus'

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: ipu-fb: mark internally used functions as static ...

Fixes symbol clashes with the IPUv3 driver:
In function `ipu_ch_param_write_field':
drivers/video/imx-ipu-v3/ipu-common.c:103: multiple definition of `ipu_ch_param_write_field'
drivers/video/imx-ipu-fb.c:359: first defined here

In function `ipu_cpmem_set_format_rgb':
drivers/video/imx-ipu-v3/ipu-common.c:155: multiple definition of `ipu_cpmem_set_format_rgb'
drivers/video/imx-ipu-fb.c:504: first defined here

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

fb: imx-ipu-v3: Use writecombine memory for fb ...

To speed up copying to the framebuffer.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: ipuv3: Adjust videomode to IPU limitations ...

The IPU needs an upper margin >= 2. Make this sure. This is based
on Linux commit:

commit 6541d71
Author: Jiada Wang <jiada_wang@mentor.com>
Date:   Thu Dec 18 18:00:20 2014 -0800

    gpu: ipu-di: Add ipu_di_adjust_videomode()

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video: imx-hdmi: sync with kernel ...

This syncs the imx-hdmi driver with Linux 4.2-rc1 where it makes sense. This
makes it easier to compare the driver with the kernel. This also adds
hdmi_av_composer which is mandatory. Somehow the driver worked without it in
lower resolutions, but now it also works for higher resolutions.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/vpl'