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Zhao Yakui 6a304caf0b drm/i915: Read the response after issuing DDC bus switch command 
For some SDVO cards based on conexant chip, we can't read the EDID if
we don't read the response after issuing SDVO DDC bus switch
command.

From the SDVO spec once when another I2C transaction is finished after
completing the I2C transaction of issuing the bus switch command, it
will be switched back to the SDVO internal state again. So we can't
initiate a new I2C transaction to read the response after issuing the
DDC bus switch command. Instead we should issue DDC bus switch command
and read the response in the same I2C transaction.

https://bugs.freedesktop.org/show_bug.cgi?id=23842
https://bugs.freedesktop.org/show_bug.cgi?id=24458
https://bugs.freedesktop.org/show_bug.cgi?id=24522
https://bugs.freedesktop.org/show_bug.cgi?id=24282

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Tested-by: Sebastien Caty <sebastien.caty@mrnf.gouv.qc.ca>
Signed-off-by: Eric Anholt <eric@anholt.net>
 		2010-01-12 14:52:38 -08:00
..
accessibility drop explicit include of autoconf.h 2009-12-12 13:08:15 +01:00
acpi Merge branch 'resume-sci-force-bootparam' into release 2009-12-30 18:32:32 -05:00
amba
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ata Merge branch 'misc-2.6.33' into release 2009-12-24 01:19:00 -05:00
atm drivers/atm: Correct code taking the size of a pointer 2009-12-13 19:56:33 -08:00
auxdisplay
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base devtmpfs: unlock mutex in case of string allocation error 2009-12-23 11:23:44 -08:00
block aoe: switch to the new bio_flush_dcache_pages() interface 2009-12-22 09:12:48 +01:00
bluetooth Bluetooth: Prevent ill-timed autosuspend in USB driver 2009-12-17 12:12:49 -08:00
cdrom Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 2009-12-09 19:03:16 -08:00
char tosh: Use non bkl ioctl 2010-01-04 12:31:21 -08:00
clocksource cs5535: add a generic clock event MFGPT driver 2009-12-15 08:53:28 -08:00
connector
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cpufreq Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2009-12-14 09:58:24 -08:00
cpuidle drivers/cpuidle: Move dereference after NULL test 2009-12-15 08:53:25 -08:00
crypto Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2009-12-14 09:58:24 -08:00
dca
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dio
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dma Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2009-12-30 13:46:29 -08:00
edac edac, pci: remove pesky debug printk 2009-12-24 11:07:09 +01:00
eisa
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firewire firewire, ieee1394: update Kconfig help 2009-12-29 19:58:17 +01:00
firmware firmware: only allow EDD on x86 2009-12-15 08:53:34 -08:00
gpio gpiolib: add support for changing value polarity in sysfs 2009-12-16 07:20:01 -08:00
gpu drm/i915: Read the response after issuing DDC bus switch command 2010-01-12 14:52:38 -08:00
hid drop explicit include of autoconf.h 2009-12-12 13:08:15 +01:00
hwmon Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2009-12-17 16:48:08 -08:00
i2c i2c-omap: OMAP3: Fix I2C lockup during timeout/error cases 2009-12-24 01:30:54 +00:00
ide Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2009-12-12 14:27:24 -08:00
idle cpumask: convert drivers/idle/i7300_idle.c to cpumask_var_t 2009-12-17 11:43:25 +10:30
ieee1394 firewire, ieee1394: update Kconfig help 2009-12-29 19:58:17 +01:00
ieee802154
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infiniband kfifo: fix warn_unused_result 2009-12-22 14:17:56 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2009-12-31 11:12:35 -08:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2009-12-21 10:12:25 -08:00
leds leds: leds-pwm: Set led_classdev max_brightness 2009-12-17 11:42:34 +00:00
lguest lguest: fix bug in setting guest GDT entry 2010-01-04 12:33:33 -08:00
macintosh Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2009-12-12 14:27:24 -08:00
mca
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md md: allow a resync that is waiting for other resync to complete, to be aborted. 2009-12-30 15:25:23 +11:00
media firewire: fix use of multiple AV/C devices, allow multiple FCP listeners 2009-12-29 19:58:16 +01:00
memstick
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message i2o: propogate the BKL down into the ioctl method 2010-01-04 12:31:21 -08:00
mfd twl4030-irq.c: fix compiler warning due to raw-spinlock conversion 2009-12-31 17:26:05 -08:00
misc Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2009-12-17 16:38:48 -08:00
mmc sdhci-of: add support for the wii sdhci controller 2009-12-17 15:45:32 -08:00
mtd Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus 2009-12-17 16:38:06 -08:00
net ARM: 5865/1: nuc900 ethernet driver needs mii 2010-01-05 20:53:07 +00:00
nubus
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of Merge commit 'origin/master' into next 2009-12-09 17:14:38 +11:00
oprofile Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2009-12-14 09:58:24 -08:00
parisc parisc: Fixup last users of irq_chip->typename 2009-12-16 03:48:56 +00:00
parport parport_pc.c: use correct length in strncmp 2009-12-16 07:20:12 -08:00
pci pci: avoid compiler warning in quirks.c 2009-12-31 16:44:43 -08:00
pcmcia Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2009-12-30 13:13:24 -08:00
platform dell-wmi: sys_init_module: 'dell_wmi'->init suspiciously returned 21, it should follow 0/-E convention 2009-12-30 12:42:53 -08:00
pnp Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2009-12-16 12:33:19 -08:00
power Merge git://git.infradead.org/battery-2.6 2009-12-15 08:59:33 -08:00
pps
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ps3
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rapidio
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regulator regulator: wm831x_reg_read() failure unnoticed in wm831x_aldo_get_mode() 2009-12-17 10:27:30 +00:00
rtc Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus 2009-12-17 16:38:06 -08:00
s390 [S390] qdio: convert global statistics to per-device stats 2010-01-04 09:05:58 +01:00
sbus bbc_envctrl: Clean up properly if kthread_run() fails. 2010-01-04 15:31:10 -08:00
scsi [SCSI] lpfc 8.3.7: Update Driver version to 8.3.7 2010-01-04 11:39:47 -06:00
serial serial: sh-sci: Convert tremaining ctrl_xxx I/O routines to __raw_xxx. 2009-12-24 14:52:43 +09:00
sfi
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sh sh: pfc: Fixup type mismatch in debug printks. 2009-12-09 15:51:27 +09:00
sn ioc3/ioc4: fix error path on driver registration 2009-12-15 08:53:27 -08:00
spi Merge branch 'next-spi' of git://git.secretlab.ca/git/linux-2.6 2009-12-17 15:59:05 -08:00
ssb
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staging Staging/vt66*: kconfig, depends on WLAN 2009-12-23 11:27:50 -08:00
tc
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telephony Merge branch 'for-next' into for-linus 2009-12-07 18:36:35 +01:00
thermal Merge branch 'misc-2.6.33' into release 2009-12-16 14:22:32 -05:00
uio const: constify remaining dev_pm_ops 2009-12-15 08:53:25 -08:00
usb USB: Fix a bug on appledisplay.c regarding signedness 2009-12-23 11:34:20 -08:00
uwb
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video [ARM] pxafb: fix building issue of incorrect reference 2009-12-29 14:11:27 +08:00
virtio
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vlynq
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w1
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watchdog [WATCHDOG] use resource_size() 2009-12-23 19:53:04 +00:00
xen Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2009-12-11 12:18:16 -08:00
zorro
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Kconfig firewire, ieee1394: update Kconfig help 2009-12-29 19:58:17 +01:00
Makefile
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