WLAN-BT GPIOs need proper initialization

SRU Justification:

Impact: This patch is part of a series of fix for the IGEPv2 board. Initialization of the GPIOs used by the WLAN-BT must be tailored to the underlying HW.

Fix: The fix entails checking the "hwrev" flag and make the proper configuration. This patch depends on [PATCH 3/6], applied to fix BugLink: https://bugs.launchpad.net/bugs/654586

Testcase: Without this patch the WLAN BT combo simply won't work on newer boards.

Accepted linux-linaro into maverick-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

Accepted linux into maverick-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed' to 'verification-done'.

If verification is not done by Thursday, November 11, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug was fixed in the package linux-linaro - 2.6.35-1008.15

---------------
linux-linaro (2.6.35-1008.15) maverick-proposed; urgency=low

  [ Robert Nelson ]

  * SRU: Fix DVI for Beagle xM rev A3
    - LP: #663642

linux-linaro (2.6.35-1008.14) maverick-proposed; urgency=low

  [ Andy Whitcroft ]

  * reduce disk usage during buildd builds
    - LP: #645653

  [ Enric Balletbo i Serra ]

  * ARM: igepv2: Adding support for VBUS and overcurrent
    - LP: #651589
  * ARM: igepv2: Fix and improve LED handling
    - LP: #654582
  * ARM: igepv2: Introduce function to dectect HW version
    - LP: #654586
  * ARM: igepv2: Fix handling of GPIOs for WLAN-BT combo
    - LP: #654590
  * ARM: igepv2: Add i2c eeprom driver to read EDID
    - LP: #654594
  * ARM: igepv2: Remove VMMC2 regulator
    - LP: #654595

  [ Maurus Cuelenaere ]

  * SAUCE: ARM: OMAP3: Add S-Video output to IGEPv2 board
    - LP: #607250

  [ Upstream Stable ]
  * Linux 2.6.35.7

  [ Upstream MMC updates ]

  * mmc: recognize CSD structure
  * mmc: split mmc_sd_init_card()
  * mmc: implement SD-combo (IO+mem) support
  * sdhci: remove useless set_clock() check
  * sdhci: 8-bit data transfer width support
  * sdhci: don't assign mmc->caps at SDHCI directly
  * mmc: only set blockaddressed for > 2GiB cards
  * mmc: omap: fix for bus width which improves SD card's peformance.
  * sdhci-pltfm: switch to module device table matching
  * sdhci-pltfm: reorganize Makefile entries to support SoC devices
  * sdhci-pltfm: add support for CNS3xxx SoC devices
  * omap hsmmc: fix processing of all dma interrupts as block completion
  * sdhci: add regulator support
  * sdhci: add no hi-speed bit quirk support
  * mmc: avoid getting CID on SDIO-only cards
  * omap_hsmmc: remove unused local `state'
  * omap hsmmc: fix a racing case between kmmcd and omap_hsmmc_suspend
  * drivers/mmc/host/imxmmc.c: adjust confusing if indentation
  * mmc: sdhci-pltfm: Add structure for host-specific data
  * mmc: sdhci-pltfm: move .h file into appropriate subdir
  * mmc: sdhci: introduce get_ro private write-protect hook
  * mmc: sdhci_pltfm: pass more data on custom init call
  * mmc: sdhci-of-esdhc: factor out common stuff
  * mmc: sdhci-pltfm: add -pltfm driver for imx35/51
  * mmc: quirk fix for timeout problem
  * babbage: esdhc device registration
  * babbage: update mx51_defconfig
    - LP: #656966

  [ Upstream ARM fixes ]

  * Make PTRACE_SINGLESTEP work with user helpers
  * ARM: fix section mismatch warnings in Versatile Express
  * ARM: use memblock to remove memory from available memory
  * video: omap: vram: remove from normal memory
    - LP: #627779

  [ John Rigby ]
  * LINARO: update configs
    - LP: #659799

linux-linaro (2.6.35-1007.13) maverick; urgency=low

  [ Upstream Ubuntu ]

  * Ubuntu-2.6.35-22.33
  * Ubuntu-2.6.35-22.34

  [ Upstream ARM Fixes ]

  * ARM: vexpress: set RAM latencies to 1 cycle for PL310 on ct-ca9x4 tile
  * ARM: vexpress: set RAM latencies to 1 cycle for PL310 on ct-ca9x4 tile
  * ARM: add a vma entry for the user accessible vector page
  * ARM: plug a race with the alignment trap handler
  * arm: fix really nasty sigreturn bug
  * ARM: prevent multiple syscall ...

Test environment:
ubuntu@ubuntu:~$ uname -a
Linux ubuntu 2.6.35-23-omap #37-Ubuntu Sat Nov 6 02:01:12 UTC 2010 armv7l GNU/Linux
ubuntu@ubuntu:~$ cat /proc/version
Linux version 2.6.35-23-omap (buildd@gourd) (gcc version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5) ) #37-Ubuntu Sat Nov 6 02:01:12 UTC 2010

Testcase 1 : Check for correct GPIOs for WLAN/BT on IGEP v2 Rev. B

 - Expected result :
    - GPIO_WIFI_NPD 94
    - GPIO_WIFI_NRESET 95
    - GPIO_BT_NRESET 137

 - Step 1 : Boot an IGEP v2 Rev. B board and check for WIFI/BT GPIOs

  ubuntu@ubuntu:~$ cat /sys/kernel/debug/gpio | grep GPIO_WIFI_NPD
  gpio-94 (GPIO_WIFI_NPD ) out hi
  ubuntu@ubuntu:~$ cat /sys/kernel/debug/gpio | grep GPIO_WIFI_NRESET
  gpio-95 (GPIO_WIFI_NRESET ) out hi
  ubuntu@ubuntu:~$ cat /sys/kernel/debug/gpio | grep GPIO_BT_NRESET
  gpio-137 (GPIO_BT_NRESET ) out hi

 - Result, PASS, GPIOs are correctly configured.

Testcase 1 : Check for correct GPIOs for WLAN/BT on IGEP v2 Rev. C

 - Expected result :
    - GPIO_WIFI_NPD 138
    - GPIO_WIFI_NRESET 139
    - GPIO_BT_NRESET 137

 - Step 1 : Boot an IGEP v2 Rev. C board and check for WIFI/BT GPIOs

 ubuntu@ubuntu:~$ cat /sys/kernel/debug/gpio | grep GPIO_WIFI_NPD
 gpio-138 (GPIO_WIFI_NPD ) out hi
 ubuntu@ubuntu:~$ cat /sys/kernel/debug/gpio | grep GPIO_WIFI_NRESET
 gpio-139 (GPIO_WIFI_NRESET ) out hi
 ubuntu@ubuntu:~$ cat /sys/kernel/debug/gpio | grep GPIO_BT_NRESET
 gpio-137 (GPIO_BT_NRESET ) out hi

 - Result, PASS, GPIOs are correctly configured.

Migrated to bugzilla: https://bugs.linaro.org/show_bug.cgi?id=556

Maverick has long since stopped to receive any updates. Marking the Maverick task for this ticket as "Won't Fix".