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Christian Trefzer 9f672004ab [PATCH] neofb: avoid resetting display config on unblank (v2) ... There were two mistakes in the register-read-on-(un)blank approach. - First, without proper register (un)locking the value read back will always be zero, and this is what I missed entirely until just now. Due to this, the logic could not be verified at all and I tried some bogus checks which are completely stupid. - Second, the LCD status bit will always be set to zero when the backlight has been turned off. Reading the value back during unblank will disable the LCD unconditionally, regardless of the state it is supposed to be in, since we set it to zero beforehand. So this is what we do now: - create a new variable in struct neofb_par, and use that to determine whether to read back registers (initialized to true) - before actually blanking the screen, read back the register to sense any possible change made through Fn key combo - use proper neoUnlock() / neoLock() to actually read something - every call to neofb_blank() determines if we read back next time: blanking disables readback, unblanking (FB_BLANK_UNBLANK) enables it This should give us a nice and clean state machine. Has been thoroughly tested on a Dell Latitude CPiA / NM220 Chip docked to a C/Dock2 with attached CRT in all possible combinations of LCD/CRT on/off. I changed the config via Fn key, let the console blank, unblanked by keypress - works flawlessly. Signed-off-by: Christian Trefzer <ctrefzer@gmx.de> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
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acorn	[PATCH] move capable() to capability.h	19 years ago
acpi	[PATCH] x86_64: data/functions wrongly marked as __init with cpu hotplug.	19 years ago
amba	[ARM] Remove asm/irq.h includes from ARM drivers	19 years ago
atm	[ATM]: Remove unneeded kmalloc() return value casts + tiny whitespace cleanup	19 years ago
base	[PATCH] fix __user annotations in drivers/base/memory.c	19 years ago
block	[PATCH] pktcdvd: Reduce stack usage	19 years ago
bluetooth	[Bluetooth] Fix firmware loading problem of BT3C driver	19 years ago
cdrom	[PATCH] remove bogus asm/bug.h includes.	19 years ago
char	[PATCH] HPET: handle multiple ACPI EXTENDED_IRQ resources	19 years ago
connector	[PATCH] Switch getnstimestamp() calls to ktime_get_ts()	19 years ago
cpufreq	[CPUFREQ] Whitespace/CodingStyle cleanups	19 years ago
crypto	[CRYPTO] Allow AES C/ASM implementations to coexist	19 years ago
dio	[PATCH] Add dio_bus_type probe and remove methods	19 years ago
edac	[PATCH] drivers/edac/i82875p_edac.c __user annotations	19 years ago
eisa	…
fc4	…
firmware	[PATCH] dell_rbu: fix Bug 5854	19 years ago
hwmon	[PATCH] it87: Fix oops on removal	19 years ago
i2c	[PATCH] i2c: Drop outdated probe/remove code in i2c-isa	19 years ago
ide	[PATCH] ide: cast arguments to pr_debug() properly	19 years ago
ieee1394	Actually remove amdtp.[ch], cmp.[ch].	19 years ago
infiniband	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband	19 years ago
input	Merge master.kernel.org:/pub/scm/linux/kernel/git/dtor/input	19 years ago
isdn	[PATCH] Fix NULL pointer dereference in isdn_tty_at_cout	19 years ago
macintosh	ppc: fix up trivial Kconfig config selection	19 years ago
mca	…
md	[PATCH] md: Make sure rdev->size gets set for version-1 superblocks	19 years ago
media	[PATCH] drivers/media/video __user annotations and fixes	19 years ago
message	[PATCH] Fix i2o_scsi oops on abort	19 years ago
mfd	[PATCH] Add MCP bus_type probe and remove methods	19 years ago
misc	[SERIAL] Remove UPF_AUTOPROBE and UPF_BOOT_ONLYMCA	19 years ago
mmc	[MMC] Remove extra character in AU1XXX MMC Kconfig entry	19 years ago
mtd	[PATCH] arm: fix dependencies for MTD_XIP	19 years ago
net	[APPLETALK]: warning fix	19 years ago
nubus	…
oprofile	[PATCH] move capable() to capability.h	19 years ago
parisc	[PARISC] Convert sba_iommu.c to use seq_file	19 years ago
parport	Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6	19 years ago
pci	[PATCH] PowerPC/PCI Hotplug build break	19 years ago
pcmcia	[PATCH] Add pcmcia_bus_type probe and remove methods	19 years ago
pnp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/perex/alsa	19 years ago
rapidio	[PATCH] Add rio_bus_type probe and remove methods	19 years ago
s390	[PATCH] s390: fix sclp memory corruption in tty pages list	19 years ago
sbus	[PATCH] remove unused tmp_buf_sem's	19 years ago
scsi	Merge branch 'upstream-fixes'	19 years ago
serial	[SERIAL] Remove incorrect code from ioc4 serial driver	19 years ago
sh	[PATCH] Add superhyway_bus_type probe and remove methods	19 years ago
sn	[PATCH] sn3 iomem annotations and fixes	19 years ago
spi	[PATCH] SPI: spi_butterfly, restore lost deltas	19 years ago
tc	[PATCH] remove bogus asm/bug.h includes.	19 years ago
telephony	[PATCH] ixj: fix writing silence check	19 years ago
usb	[PATCH] USB: unusual-devs bugfix	19 years ago
video	[PATCH] neofb: avoid resetting display config on unblank (v2)	19 years ago
w1	spelling: s/usefull/useful/	19 years ago
zorro	[PATCH] Add zorro_bus_type probe and remove methods	19 years ago
Kconfig	[PATCH] EDAC: core EDAC support code	19 years ago
Makefile	[PATCH] drivers/sn/ must be entered for CONFIG_SGI_IOC3	19 years ago