Commit graph

5 commits

Author SHA1 Message Date
Stefan Agner
7a2d533eec video: fsl_dcu_fb: add additional modes for DCU
Add common widescreen modes 800x480 and 1024x600.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
Reviewed-by: Alison Wang <alison.wang@nxp.com>
2017-04-14 13:59:07 +02:00
Stefan Agner
7ce92a554a video: fsl_dcu_fb: Fix DCU_MODE_BLEND_ITER setting
DCU_LAYER_MAX_NUM is currently used for DCU_MODE_BLEND_ITER and it
actually overflows the maximum value of BLEND_ITER for Vybrid and
LS102XA. Fix this by using a default value of 2.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
2017-04-14 13:56:24 +02:00
Stefan Agner
32f26f56b3 video: fsl_dcu_fb: Enable pixel clock after initialization
When enabling the DCU and pixel clock, the test mode is activated
since this is the reset configuration. The test mode immediately
shows a red screen on a LCD. A moment later, the DCU gets
initialized properly.

This patch enables the pixel clock after initialization of the DCU
control register. This avoids this initial flicker on LCD screens.

While at it change the polarity of pixel clock to display samples
data on the rising edge.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
Reviewed-by: Alison Wang <alison.wang@nxp.com>
2017-04-14 13:52:56 +02:00
Stefan Agner
77810e638e video: fsl_dcu_fb: fix framebuffer to the end of memory
Fix the framebuffer location to the very end of the available memory.
This allows to remove the area from available memory for the kernel,
which in turn allows to display the splash screen through the Linux
kernel boot process.

Ideas has been taken from the sunxi display driver, e.g.
20779ec3a5 ("sunxi: video: Dynamically reserve framebuffer memory")

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Signed-off-by: Sanchayan Maity <maitysanchayan@gmail.com>
2017-04-14 13:50:41 +02:00
Wang Huan
327def5060 video: dcu: Add DCU driver support
This patch is to add DCU driver support. DCU also named
2D-ACE(Two Dimensional Animation and Compositing Engine)
is a system master that fetches graphics stored in internal
or external memory and displays them on a TFT LCD panel.

Signed-off-by: Alison Wang <alison.wang@freescale.com>
2014-09-08 10:30:35 -07:00