Robert Jarzmik 2023b0524a backlight: tdo24m: Fix the SPI CS between transfers ... Currently the LCD display (TD035S) on the cm-x300 platform is broken and remains blank. The TD0245S specification requires that the chipselect is toggled between commands sent to the panel. This was also the purpose of the former patch of commit f64dcac0b1 ("backlight: tdo24m: ensure chip select changes between transfers"). Unfortunately, the "cs_change" field of a SPI transfer is misleading. Its true meaning is that for a SPI message holding multiple transfers, the chip select is toggled between each transfer, but for the last transfer it remains asserted. In this driver, all the SPI messages contain exactly one transfer, which means that each transfer is the last of its message, and as a consequence the chip select is never toggled. Actually, there was a second bug hidding the first one, hence the problem was not seen until v4.6. This problem was fixed by commit a52db659c7 ("spi: pxa2xx: Fix cs_change management") for PXA based boards. This fix makes the TD035S work again on a cm-x300 board. The same applies to other PXA boards, ie. corgi and tosa. Fixes: a52db659c7 ("spi: pxa2xx: Fix cs_change management") Reported-by: Andrea Adami <andrea.adami@gmail.com> Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>		2018-01-08 09:21:57 +00:00
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88pm860x_bl.c
aat2870_bl.c
adp5520_bl.c
adp8860_bl.c
adp8870_bl.c
ams369fg06.c
apple_bl.c	backlight: apple_bl: Deprecate pci_get_bus_and_slot()	2017-12-20 13:47:05 +00:00
arcxcnn_bl.c
as3711_bl.c
backlight.c
bd6107.c
corgi_lcd.c	backlight: tdo24m: Fix the SPI CS between transfers	2018-01-08 09:21:57 +00:00
cr_bllcd.c
da903x_bl.c
da9052_bl.c
ep93xx_bl.c
generic_bl.c
gpio_backlight.c
hp680_bl.c
hx8357.c
ili922x.c	backlight: ili922x: Remove redundant variable len	2017-11-08 10:43:49 +00:00
ili9320.c
ili9320.h
ipaq_micro_bl.c
jornada720_bl.c
jornada720_lcd.c
kb3886_bl.c
Kconfig
l4f00242t03.c
lcd.c
ld9040_gamma.h
ld9040.c
lm3533_bl.c
lm3630a_bl.c
lm3639_bl.c
lms283gf05.c
lms501kf03.c
locomolcd.c
lp855x_bl.c
lp8788_bl.c
ltv350qv.c
ltv350qv.h
lv5207lp.c
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
max8925_bl.c
omap1_bl.c
ot200_bl.c
pandora_bl.c
pcf50633-backlight.c
platform_lcd.c
pm8941-wled.c
pwm_bl.c	backlight: pwm_bl: Fix overflow condition	2017-10-13 10:41:20 +01:00
s6e63m0_gamma.h
s6e63m0.c
sky81452-backlight.c
tdo24m.c	backlight: tdo24m: Fix the SPI CS between transfers	2018-01-08 09:21:57 +00:00
tosa_bl.c
tosa_lcd.c	backlight: tdo24m: Fix the SPI CS between transfers	2018-01-08 09:21:57 +00:00
tps65217_bl.c	- Fix-ups	2017-11-16 10:36:46 -08:00
vgg2432a4.c
wm831x_bl.c