[U-Boot] [PATCH V2 0/6] Add support for SPI based DataImage LCD panel

Nikita Kiryanov
2013-10-16T14:23:23Z

This patch ports the Linux driver for DataImage SCF0403852GGU04 and
SCF0403526GGU20 LCD panels into U-Boot. As a preparation step, variable SPI word
length support is added to omap3_spi and the generic SPI interface.
Finally, the driver is used in cm_t35 board.

The SPI changes were tested with a Beagle I2C/SPI/MDIO Protocol Analyzer, and
also with a DataImage SCF0403 lcd as part of the DataImage driver test.

Patch number 6 depends on http://patchwork.ozlabs.org/patch/275283/

Cc: Tom Rini <trini@ti.com>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Igor Grinberg <grinberg@compulab.co.il>
Cc: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>

Changes in V2:
- Rebased on top of latest U-Boot
- New patches:
1) spi: omap3: remove semicolon from #define
2) spi: define SPI_XFER_ONCE
3) omap3_dss: define DSS_ONOFF
1 is a preliminary cleanup suggested by Gerhard Sittig and Igor Grinberg
2 and 3 are splitting off some new #defines to separate patches
- Moved wordlen to generic spi_slave struct, and added generic
implementation for spi_set_wordlen which only updates the struct without
touching the hardware (Igor Grinberg)
- Updated wordlen in hardware just before doing SPI transactions, not
when changing wordlen (Igor Grinberg)
- OMAP3 specific check of wordlen value from old implementation of
spi_set_wordlen moved to xfer. It refines the more general check done
in the new spi_set_wordlen.
- Fixed comment style in spi.h following a rebase on top of latest
U-Boot
- Added SPDX-License-Identifier to all new files (Anatolij Gustschin)
- s/printf/puts for not formatted strings in scf0403 driver (Anatolij
Gustschin)
- Do not fail scf0403 driver init if an invalid reset_gpio is given
(Igor Grinberg)

Nikita Kiryanov (6):
spi: omap3: remove semicolon from #define
spi: omap3: add support for more word lengths
spi: define SPI_XFER_ONCE
lcd: add DataImage SCF0403x LCD panel support
omap3_dss: define DSS_ONOFF
cm_t35: use scf0403 driver

arch/arm/include/asm/arch-omap3/dss.h | 9 +-
board/compulab/cm_t35/cm_t35.c | 12 ++
board/compulab/common/omap3_display.c | 46 +++++-
drivers/spi/omap3_spi.c | 71 +++++---
drivers/spi/omap3_spi.h | 8 +-
drivers/spi/spi.c | 13 ++
drivers/video/Makefile | 1 +
drivers/video/scf0403_lcd.c | 296 ++++++++++++++++++++++++++++++++++
include/configs/cm_t35.h | 3 +
include/scf0403_lcd.h | 11 ++
include/spi.h | 17 ++
11 files changed, 456 insertions(+), 31 deletions(-)
create mode 100644 drivers/video/scf0403_lcd.c
create mode 100644 include/scf0403_lcd.h

--
1.8.1.2