— eCos Support for the i.MXxx framebuffer
CYGPKG_DEVS_FRAMEBUF_ARM_IMX provides an eCos
framebuffer device driver for the LCD panel on the i.MXxx family of
processors. The driver is a hardware package and is loaded
automatically when configuring eCos for an i.MXxx target. By
default it is inactive and does not add any code size or data
overheads. To activate the driver the generic framebuffer package
CYGPKG_IO_FRAMEBUF should be added to the
configuration. The driver's functionality is only accessible via
the API defined by the generic package.
The driver supports a single framebuffer device, driving the LCD
panel in 565 true colour mode with a resolution of 640x480 pixels
at 16bpp. The cyg_fb structure for this
cyg_imx_fb_640x480x16, and the identifier for
use with the framebuffer macro API is
operations supported are
CYG_FB_IOCTL_BACKLIGHT_SET. The backlight
supports 256 levels of intensity.
The driver must be configured for the LCD panel attached using the
option. Normally this would be set by the platform HAL package
using a requires statement. At present only one panel type is
supported: the Chunghwa CLAA057VA01CT.
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