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path: root/arch/arm/include/asm/arch-sunxi/display.h
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* sunxi: display: Fix composite video out on sun5iHans de Goede2015-08-14-1/+11
| | | | | | | | The tv-encoder on sun5i is slightly different compared to the one on sun4i/sun7i. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* sunxi: display: Add a few extra register and constant definesHans de Goede2015-08-08-5/+40
| | | | | | | | | | | | | Add a few extra sunxi display registers and constant defines. Also rename some existing defines (e.g. dropping _GCTRL) and make some more generic (e.g. dropping the 2x scaling from SUNXI_LCDC_TCON1_TIMING_V_TOTAL). This is a preparation patch for adding composite video out support. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* sunxi: video: Fix lvds panel support for sun6i+Hans de Goede2015-05-19-0/+12
| | | | | | | | | We've never tested the lvds panel support on sun6i+ SoCs until now, and unsurprisingly the lvds code needed some fixes to work on my ga10h A33 tablet with lvds panel. This makes the panel on that tablet actually work. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* sunxi: video: Use frontend for dma on sun4i to fix memory bandwidth problemsHans de Goede2015-01-22-0/+116
| | | | | | | | | | | | | | | | | | | | Testing has shown that on sun4i the display backend engine does not have deep enough fifo-s causing flickering / tearing in full-hd mode due to fifo underruns. On sun4i use the display frontend engine to do the dma from memory, as the frontend does have deep enough fifo-s. As added advantage of this is that it results in much better memory bandwidth as it reduces the amount of dram bank switches, for more details see: http://ssvb.github.io/2014/11/11/revisiting-fullhd-x11-desktop-performance-of-the-allwinner-a10.html Note that this changes the pipeline searched for in the simplefb node, we can get away with doing this now, since no kernel has yet shipped with simplefb dtb nodes, and I will make sure to get a simplefb node with the new pipeline into 3.19 before it ships. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* sunxi: display: Make lcd display clk phase configurableHans de Goede2015-01-22-3/+1
| | | | | | | | | | | | | | | | | | | | While running some tests with an Olinuxino-A13-Micro + a 7" Olimex LCD module I noticed that the screen flickered. This is caused by the lcd display clk phase reg value being set to 0, where it should be 1 in this setup. This commit adds a Kconfig option for the lcd display clk phase, so that we can set it per board. This defaults to 1, because looking at all the fex files in sunxi-boards, that is by far the most used value. This commit updated the Ippo and MSI Primo73 tablet defconfigs to override the default of 1 with 0, as that is the correct value for those tablets, this keeps the register settings the same as before this commit. The Olinuxino-A13 defconfigs are not updated, changing the register setting for these boards from 0 to 1, this is intentional. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* sunxi: video: Add lvds supportHans de Goede2015-01-14-0/+12
| | | | | | | Add support for lvds lcd panels Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Anatolij Gustschin <agust@denx.de>
* sunxi: video: Add VGA output supportHans de Goede2015-01-14-0/+76
| | | | | | | Add support for VGA directly from the sunxi SoC / display engine. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* sunxi: video: Add lcd output supportHans de Goede2015-01-14-6/+24
| | | | | | | | Add lcd output support, see the new Kconfig entries and doc/README.video for how to enable / configure this. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>
* sunxi: video: Set input sync enableHans de Goede2015-01-14-0/+1
| | | | | | | | | | | | | | | | | | | Add a write to the "unknown" (*) register to enable auto input sync, when initially adding sunxi hdmi output support this magic write from the android kernel code was missed, causing lcdc -> hdmi encoder sync problems. With this write added, we can drop the modesetting retries and the extra delays added to work around these sync problems. With the retries dropped there also is no need to 0 all the enable flags at the beginning of the modeset, as they are initialized to 0 already by engines_init. *) "unknown" is the actual name of this register in the android kernel sources Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk> Acked-by: Anatolij Gustschin <agust@denx.de>
* sunxi: video: Add hdmi supportHans de Goede2015-01-14-10/+23
| | | | | | | | | | | | | | | | | So far we've been programming the hdmi-encoder to send out dvi data over the hdmi connector. This works well for most devices, including hdmi devices, but not all devices accept dvi data on a hdmi input. Add support for sending proper hdmi data over the hdmi output found on most sunxi boards. This can be turned on by adding monitor=hdmi as option to the video-mode env. variable. A follow up patch will determine whether to send dvi or hdmi automatically when EDID is used. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk> Acked-by: Anatolij Gustschin <agust@denx.de>
* sunxi: video: Add DDC & EDID supportHans de Goede2015-01-14-0/+85
| | | | | | | | | | Add DDC & EDID support and use it to automatically select the native mode of the attached monitor. This can be disabled by adding edid=0 as option to the video-mode env. variable. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk> Acked-by: Anatolij Gustschin <agust@denx.de>
* sunxi: video: Add simplefb supportLuc Verhaegen2014-11-25-0/+2
| | | | | | | | | | | | Add simplefb support, note this depends on the kernel having support for the clocks property which has recently been added to the simplefb devicetree binding. Signed-off-by: Luc Verhaegen <libv@skynet.be> [hdegoede@redhat.com: Use pre-populated simplefb node under /chosen as disussed on the devicetree list] Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Ian Campbell <ijc@hellion.org.uk>.
* sunxi: video: Add cfb console driver for sunxiLuc Verhaegen2014-11-25-0/+185
This adds a fixed mode hdmi driver for the sunxi platform. The fixed mode is a relatively safe 1024x768, more complete EDID handling is currently not provided. Only HDMI is supported today. This code is enabled when HPD detects an attached monitor. Current config is such that 8MB is shaved off at the top of the RAM. This avoids several memory handling issues, most significant is the fact that on linux on ARM you are not allowed to remap known RAM as IO. A clued in display driver will be able to recycle this reserved RAM in future though. cfbconsole was chosen as it provides the most important functionality: a working u-boot console, allowing for the debugging of certain issues without the need for a UART. Signed-off-by: Luc Verhaegen <libv@skynet.be> [hdegoede@redhat.com: Major cleanups and some small bugfixes] Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Anatolij Gustschin <agust@denx.de> Acked-by: Ian Campbell <ijc@hellion.org.uk>