Jean Delvare ac7809414f i2c/tsl2550: Use combined SMBus transactions ... Make the I/O faster, mainly by using combined SMBus transactions when possible. While the TSL2550 datasheet doesn't say the device supports them, they seem to work just fine in practice, and a combined transaction is faster than two simple transactions in many cases and always more reliable. A side effect is to suppress the delays between SMBus writes and reads. The datasheet doesn't say they are needed and things work just fine for me without them. I also couldn't see any reason for the delay between reading the two channels. Nor for the loop to get a reading in the first place. The 400 ms delay between samples only matters at chip power-up, after that the chip always hold the previously sampled value so we never get to wait. All these changes make reading the lux value much faster and cheaper. Signed-off-by: Jean Delvare <khali@linux-fr.org> Tested-by: Michele De Candia <michele.decandia@valueteam.com> Cc: Rodolfo Giometti <giometti@linux.it>		2009-09-18 22:45:44 +02:00
..
accessibility
acpi	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6	2009-09-16 07:49:54 -07:00
amba
ata	libata: Add pata_atp867x driver for Artop/Acard ATP867X controllers	2009-09-17 16:47:06 -04:00
atm
auxdisplay
base	Driver Core: devtmpfs - kernel-maintained tmpfs-based /dev	2009-09-15 09:50:49 -07:00
block	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6	2009-09-16 08:27:10 -07:00
bluetooth	pcmcia: dtl1_cs: fix pcmcia_loop_config logic	2009-09-15 10:17:16 -07:00
cdrom
char	pty_write: don't do a tty_wakeup() when the buffers are full	2009-09-18 07:05:58 -07:00
clocksource
connector
cpufreq	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2009-09-15 09:39:44 -07:00
cpuidle
crypto
dca
dio
dma	at_hdmac: Rework suspend_late()/resume_early()	2009-09-14 20:27:00 +02:00
edac	amd64_edac: check NB MCE bank enable on the current node properly	2009-09-16 13:05:46 +02:00
eisa
firewire	driver model: constify attribute groups	2009-09-15 09:50:47 -07:00
firmware	driver model: constify attribute groups	2009-09-15 09:50:47 -07:00
gpio
gpu
hid	Merge branches 'upstream', 'upstream-fixes' and 'debugfs' into for-linus	2009-09-13 20:09:41 +02:00
hwmon	hwmon: (lm85) Don't bind to Winbond/Nuvoton WPCD377I	2009-09-15 17:18:14 +02:00
i2c	i2c/tsl2550: Use combined SMBus transactions	2009-09-18 22:45:44 +02:00
ide	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-next-2.6	2009-09-15 10:01:16 -07:00
idle
ieee1394
ieee802154
infiniband	driver model: constify attribute groups	2009-09-15 09:50:47 -07:00
input	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6	2009-09-16 08:27:10 -07:00
isdn
leds
lguest
macintosh	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2009-09-15 09:51:09 -07:00
mca
md	Merge branch 'for-2.6.32' of git://git.kernel.dk/linux-2.6-block	2009-09-14 17:55:15 -07:00
media	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6	2009-09-15 09:22:18 -07:00
memstick
message	Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6	2009-09-14 17:53:36 -07:00
mfd
misc	hpilo: add poll f_op	2009-09-15 09:50:48 -07:00
mmc	driver model: constify attribute groups	2009-09-15 09:50:47 -07:00
mtd	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6	2009-09-16 08:27:10 -07:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2009-09-17 20:53:52 -07:00
nubus
of
oprofile
parisc
parport
pci	Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6	2009-09-16 07:49:54 -07:00
pcmcia	Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pcmcia-2.6	2009-09-16 08:11:23 -07:00
platform	hp-wmi: Switch driver to dev_pm_ops	2009-09-14 20:26:59 +02:00
pnp
power
pps
ps3
rapidio
regulator
rtc	Nicolas Pitre has a new email address	2009-09-15 09:37:12 -07:00
s390	driver model: constify attribute groups	2009-09-15 09:50:47 -07:00
sbus
scsi	driver model: constify attribute groups	2009-09-15 09:50:47 -07:00
serial	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6	2009-09-17 20:53:52 -07:00
sh
sn
spi
ssb	ssb/sdio: fix printk format warnings	2009-09-16 16:21:00 -04:00
staging	MIPS: Octeon: False positive timeout	2009-09-17 20:07:41 +02:00
tc
telephony
thermal
uio	uio: add generic driver for PCI 2.3 devices	2009-09-15 09:50:48 -07:00
usb	debugfs: Modified default dir of debugfs for debugging UHCI.	2009-09-15 09:50:49 -07:00
uwb	Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb	2009-09-17 09:44:09 -07:00
video	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6	2009-09-17 20:54:12 -07:00
virtio
vlynq
w1
watchdog
xen	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2009-09-15 09:39:44 -07:00
zorro
Kconfig
Makefile