[PATCH 00/15] ARM: mach-shmobile: HDMI hot-plug and improvements

[PATCH 00/15] ARM: mach-shmobile: HDMI hot-plug and improvements

[Guennadi Liakhovetski]

The main purpose of this patch set is supporting dynamic framebuffer 
reconfiguration upon monitor hot-plug. The good thing is - it works. The 
not so good thing is - only to the extent, that the current fbdev API 
allows. Specifically, there is currently no possibility under the fbdev 
API to inform framebuffer users about a changed framebuffer configuration, 
as can easily be the case, when a new monitor has been plugged in. It is, 
however, possible to inform in-kernel framebuffer users, e.g., the fbcon 
console, about such a change, using framebuffer notifications. This patch 
series implements support for monitor hot-plug on the hardware level, 
i.e., the LCD and HDMI controllers get reconfigured for a new device. The 
user configuration remains untouched. With this approach with a new 
monitor plugged in, the user either gets to see the upper left corner of 
the framebuffer image, or the whole framebuffer will be displayed in the 
upper left corner of the display.

The patch series also contains a number of improvements to both the lcdc 
and hdmi SH-Mobile drivers.

Based on the current (commit 410d878b) genesis-2.6/master tree.

Thanks
Guennadi
---
Guennadi Liakhovetski, Ph.D.
Freelance Open-Source Software Developer
http://www.open-technology.de/

Re: [PATCH 00/15] ARM: mach-shmobile: HDMI hot-plug and improvements

[Paul Mundt]

On Fri, Sep 03, 2010 at 09:19:45AM +0200, Guennadi Liakhovetski wrote:
> The main purpose of this patch set is supporting dynamic framebuffer 
> reconfiguration upon monitor hot-plug. The good thing is - it works. The 
> not so good thing is - only to the extent, that the current fbdev API 
> allows. Specifically, there is currently no possibility under the fbdev 
> API to inform framebuffer users about a changed framebuffer configuration, 
> as can easily be the case, when a new monitor has been plugged in. It is, 
> however, possible to inform in-kernel framebuffer users, e.g., the fbcon 
> console, about such a change, using framebuffer notifications. This patch 
> series implements support for monitor hot-plug on the hardware level, 
> i.e., the LCD and HDMI controllers get reconfigured for a new device. The 
> user configuration remains untouched. With this approach with a new 
> monitor plugged in, the user either gets to see the upper left corner of 
> the framebuffer image, or the whole framebuffer will be displayed in the 
> upper left corner of the display.
> 
> The patch series also contains a number of improvements to both the lcdc 
> and hdmi SH-Mobile drivers.
> 
> Based on the current (commit 410d878b) genesis-2.6/master tree.
> 
Applied, thanks.