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David Brownell ffa458c1bd [PATCH] spi: ads7846 driver 
This is a driver for the ADS7846 touchscreen sensor, derived from
the corgi_ts and omap_ts drivers.  Key differences from those two:

  - Uses the new SPI framework (minimalist version)
  - <linux/spi/ads7846.h> abstracts board-specific touchscreen info
  - Sysfs attributes for the temperature and voltage sensors
  - Uses fewer ARM-specific IRQ primitives

The temperature and voltage sensors show up in sysfs like this:

  $ pwd
  /sys/devices/platform/omap-uwire/spi2.0
  $ ls
  bus@          input:event0@ power/        temp1         vbatt
  driver@       modalias      temp0         vaux
  $ cat modalias
  ads7846
  $ cat temp0
  991
  $ cat temp1
  1177
  $

So far only basic testing has been done.  There's a fair amount of hardware
that uses this sensor, and which also runs Linux, which should eventually
be able to use this driver.

One portability note may be of special interest.  It turns out that not all
SPI controllers are happy issuing requests that do things like "write 8 bit
command, read 12 bit response".  Most of them seem happy to handle various
word sizes, so the issue isn't "12 bit response" but rather "different rx
and tx write sizes", despite that being a common MicroWire convention.  So
this version of the driver no longer reads 12 bit native-endian words; it
reads 16-bit big-endian responses, then byteswaps them and shifts the
results to discard the noise.

Signed-off-by: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-13 16:29:54 -08:00
..
acpi [ACPI] increase owner_id limit to 64 from 32 2005-12-21 04:52:16 -05:00
asm-alpha [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-arm Merge master.kernel.org:/home/rmk/linux-2.6-arm 2006-01-12 12:23:49 -08:00
asm-arm26 [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-cris [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-frv [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-generic Fix mutex_trylock() copy-and-paste bug (x86, x86-64, generic mutex-dec.h) 2006-01-11 15:50:47 -08:00
asm-h8300 [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-i386 [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-ia64 [PATCH] ia64: task_pt_regs() 2006-01-12 09:08:58 -08:00
asm-m32r [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-m68k [PATCH] m68k: kill mach_floppy_setup, convert to proper __setup() in drivers 2006-01-12 09:09:05 -08:00
asm-m68knommu [PATCH] m68k: kill mach_floppy_setup, convert to proper __setup() in drivers 2006-01-12 09:09:05 -08:00
asm-mips [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-parisc [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-powerpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge 2006-01-12 10:21:22 -08:00
asm-ppc Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge 2006-01-12 10:21:22 -08:00
asm-s390 [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-sh [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-sh64 [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-sparc [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-sparc64 [PATCH] sparc64: task_pt_regs() 2006-01-12 09:08:52 -08:00
asm-um [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-v850 [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-x86_64 [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
asm-xtensa [PATCH] death of get_thread_info/put_thread_info 2006-01-12 09:08:59 -08:00
keys [PATCH] Keys: Remove key duplication 2006-01-06 08:33:29 -08:00
linux [PATCH] spi: ads7846 driver 2006-01-13 16:29:54 -08:00
math-emu
media V4L/DVB (3347): Fixes some bad global variables 2006-01-11 20:26:13 -02:00
mtd
net [PATCH] fix wrong comments in ieee80211.h 2006-01-12 16:39:45 -05:00
pcmcia [PATCH] pcmcia: unify attach, EVENT_CARD_INSERTION handlers into one probe callback 2006-01-06 00:03:24 +01:00
rdma [IB] uverbs: have kernel return QP capabilities 2005-11-10 10:22:50 -08:00
rxrpc
scsi Merge branch 'post-2.6.15' of git://brick.kernel.dk/data/git/linux-2.6-block 2006-01-06 09:01:25 -08:00
sound [PATCH] DocBook: fix kernel-doc comments 2006-01-10 08:01:53 -08:00
video [PATCH] include/video/newport.h: "extern inline" -> "static inline" 2006-01-10 08:01:50 -08:00