Building Robopeak 2.8” USB TFT driver for Angstrom.
ferite 2014-05-21 23:33:27 7404 Views3 Replies Hi.
I am working on building the driver for a the Robopeak 2.8” USB TFT Touch Display. When I build the driver against Ångström (for x86 board) kernel header sources, I am getting this error:
* error: 'struct fb_info' has no member named 'fbdefio'*
After researching the problem, it seems caused for the lack of a setting in the kernel .config file:
CONFIG_FB_DEFERRED_IO=y
I tryed just to add the line to the file but it still does not work. I tryed to add the following section to video/Kconfig (this does not make difference either):
config FB_DEFERRED_IO
tristate
depends on FB
default n
I hope that someone could provide some advice on how could I add CONFIG_FB_DEFERRED_IO config to my system so I can finish the building process?.
Thanks.
I am working on building the driver for a the Robopeak 2.8” USB TFT Touch Display. When I build the driver against Ångström (for x86 board) kernel header sources, I am getting this error:
* error: 'struct fb_info' has no member named 'fbdefio'*
After researching the problem, it seems caused for the lack of a setting in the kernel .config file:
CONFIG_FB_DEFERRED_IO=y
I tryed just to add the line to the file but it still does not work. I tryed to add the following section to video/Kconfig (this does not make difference either):
config FB_DEFERRED_IO
tristate
depends on FB
default n
I hope that someone could provide some advice on how could I add CONFIG_FB_DEFERRED_IO config to my system so I can finish the building process?.
Thanks.
2014-05-23 11:38:51 Ferite,
After a little digging around. I guess that it might depend on the Board support package.
Is it possible that parameter has changed name in Angstrom?
cheers^^ Jose
After a little digging around. I guess that it might depend on the Board support package.
Is it possible that parameter has changed name in Angstrom?
cheers^^
Jose 2014-05-23 00:56:47 Hi csk,
I tested your sugestion. After adding "Displaylink USB Framebuffer support" with 'M' option, I found the following chages:
.config file:
CONFIG_FB_DEFERRED_IO=y
/drivers/video/Kconfig file:
config FB_DEFERRED_IO
bool
depends on FB
config FB_HECUBA
tristate
depends on FB
depends on FB_DEFERRED_IO
config FB_N411
tristate "N411 Apollo/Hecuba devkit support"
depends on FB && X86 && MMU
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
select FB_HECUBA
config FB_SH_MOBILE_LCDC
tristate "SuperH Mobile LCDC framebuffer support"
depends on FB && (SUPERH || ARCH_SHMOBILE) && HAVE_CLK
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
select FB_BACKLIGHT
select SH_MIPI_DSI if SH_LCD_MIPI_DSI
config FB_SMSCUFX
tristate "SMSC UFX6000/7000 USB Framebuffer support"
depends on FB && USB
select FB_MODE_HELPERS
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
config FB_UDL
tristate "Displaylink USB Framebuffer support"
depends on FB && USB
select FB_MODE_HELPERS
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
config XEN_FBDEV_FRONTEND
tristate "Xen virtual frame buffer support"
depends on FB && XEN
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
select INPUT_XEN_KBDDEV_FRONTEND
select XEN_XENBUS_FRONTEND
default y
config FB_METRONOME
tristate "E-Ink Metronome/8track controller support"
depends on FB
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
config FB_BROADSHEET
tristate "E-Ink Broadsheet/Epson S1D13521 controller support"
depends on FB
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
config FB_AUO_K190X
tristate "AUO-K190X EPD controller support"
depends on FB
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
config FB_SSD1307
tristate "Solomon SSD1307 framebuffer support"
depends on FB && I2C
depends on OF
depends on GENERIC_GPIO
select FB_SYS_FOPS
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_DEFERRED_IO
select PWM
However the build error still taking place.
ferite
I tested your sugestion. After adding "Displaylink USB Framebuffer support" with 'M' option, I found the following chages:
.config file:
CONFIG_FB_DEFERRED_IO=y
/drivers/video/Kconfig file:
config FB_DEFERRED_IO
bool
depends on FB
config FB_HECUBA
tristate
depends on FB
depends on FB_DEFERRED_IO
config FB_N411
tristate "N411 Apollo/Hecuba devkit support"
depends on FB && X86 && MMU
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
select FB_HECUBA
config FB_SH_MOBILE_LCDC
tristate "SuperH Mobile LCDC framebuffer support"
depends on FB && (SUPERH || ARCH_SHMOBILE) && HAVE_CLK
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
select FB_BACKLIGHT
select SH_MIPI_DSI if SH_LCD_MIPI_DSI
config FB_SMSCUFX
tristate "SMSC UFX6000/7000 USB Framebuffer support"
depends on FB && USB
select FB_MODE_HELPERS
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
config FB_UDL
tristate "Displaylink USB Framebuffer support"
depends on FB && USB
select FB_MODE_HELPERS
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
config XEN_FBDEV_FRONTEND
tristate "Xen virtual frame buffer support"
depends on FB && XEN
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
select INPUT_XEN_KBDDEV_FRONTEND
select XEN_XENBUS_FRONTEND
default y
config FB_METRONOME
tristate "E-Ink Metronome/8track controller support"
depends on FB
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
config FB_BROADSHEET
tristate "E-Ink Broadsheet/Epson S1D13521 controller support"
depends on FB
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
config FB_AUO_K190X
tristate "AUO-K190X EPD controller support"
depends on FB
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_SYS_FOPS
select FB_DEFERRED_IO
config FB_SSD1307
tristate "Solomon SSD1307 framebuffer support"
depends on FB && I2C
depends on OF
depends on GENERIC_GPIO
select FB_SYS_FOPS
select FB_SYS_FILLRECT
select FB_SYS_COPYAREA
select FB_SYS_IMAGEBLIT
select FB_DEFERRED_IO
select PWM
However the build error still taking place.
ferite 2014-05-22 15:17:24 Hi ferite,
The standard approach is to add some KConfig line in the kernel source to create a driver section which refer to the CONFIG_FB_DEFERRED_IO feature.
A simple way is :
Select the Displaylink display driver ( Device Drivers-> Graphics support -> Support for frame buffer devices-> Displaylink USB Framebuffer support) as an external module. By doing so, the above features will be selected by the menuconfiger.
csk
The standard approach is to add some KConfig line in the kernel source to create a driver section which refer to the CONFIG_FB_DEFERRED_IO feature.
A simple way is :
Select the Displaylink display driver ( Device Drivers-> Graphics support -> Support for frame buffer devices-> Displaylink USB Framebuffer support) as an external module. By doing so, the above features will be selected by the menuconfiger.
csk 