[U-Boot] [PATCH V2 0/7] Add splash screen for CM-T35

Nikita Kiryanov
2013-01-29T12:42:22Z

This patchset adds splash screen support for CM-T35.
It includes the ability to initialize the display subsystem either using
predefines (selected via env variable "displaytype"), or user supplied
configuration options, also stored in an environment variables and pointed to by
displaytype. The splash image data is currently read from NAND.

As a preparation for the above functionality this patchset adds:
- new DSS #defines
- an option for board-specific splash screen preparation, which can be invoked
in lcd_logo() right before displaying the splash screen (typical use case:
load the image data from non-memory mapped storage in time for it to be
displayed).
- struct panel_config is extended to support setting the gfx_format dynamically
- protection from data aborts due to unaligned bmp headers is added to
lcd_logo's splashscreen section (I'm also looking into refining this
protection later on).

Changes in V2:
- GFXFORMAT_RGB16 now passed to omap3_dss_panel_config() in a new field of
panel_cfg. Updated existing panel_config structs to set this field to the value
that was originally hardcoded into omap3_dss_panel_config(). [Jeroen Hofstee]
- Used LCD_BPP for vl_bpix. [Jeroen Hofstee]
- Added a comment to explain the choice of GFXFORMAT_RGB16. [Jeroen Hofstee]
- Added an address check (and fix) to the address of splashimage in order to
avoid alignment problems with bmp header. A similar check appears in
board_splash_screen_prepare() for cm_t35. [Albert ARIBAUD]
- Do not manually set gfx burst size to GFXBURSTSIZE16, as it is apparently not
necessary. GFXBURSTSIZE* #defines were kept in patch 1 anyway in the hope they
will be useful for someone.

Nikita Kiryanov (7):
omap3: add useful dss defines
omap3: allow dynamic selection of gfx_format
lcd: prevent unaligned memory access when displaying splash screen
lcd: add option for board specific splash screen preparation
cm-t35: add support for dvi displays
cm-t35: add support for user defined lcd parameters
cm-t35: add support for loading splash image from NAND

README | 8 +
arch/arm/include/asm/arch-omap3/dss.h | 36 +++
board/cm_t35/Makefile | 1 +
board/cm_t35/cm_t35.c | 68 ++++++
board/cm_t35/display.c | 426 +++++++++++++++++++++++++++++++++
board/htkw/mcx/mcx.c | 1 +
board/teejet/mt_ventoux/mt_ventoux.c | 2 +
board/ti/beagle/beagle.h | 6 +-
common/lcd.c | 23 ++
drivers/video/omap3_dss.c | 2 +-
include/configs/cm_t35.h | 11 +
include/lcd.h | 1 +
12 files changed, 582 insertions(+), 3 deletions(-)
create mode 100644 board/cm_t35/display.c

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1.7.10.4