[PATCH 0/2 v3] mpc5200 ac97 gpio reset

[Eric Millbrandt]

These patches reimplement the reset fuction in the ac97 to use gpio pins
instead of using the mpc5200 ac97 reset functionality in the psc.  This
avoids a problem in which attached ac97 devices go into "test" mode appear
unresponsive.

These patches were tested on a pcm030 baseboard and on custom hardware with
a wm9715 audio codec/touchscreen controller.

Eric Millbrandt

---

changes since v1
- Refactored to manipulate port_config and gpio pins internally instead of
  exporting an API.
- Amended commit message with comments from Mark Brown
- Refactored to move the port_config manipulation to platform code.
- Remove the gpio pins from the device-tree

changes since v2
- Factored out gpiolib calls, write to the gpio registers directly
- Remove redundant checks around call to mpc5200_psc_ac97_gpio_reset()

Eric Millbrandt (2):
    powerpc/5200: add mpc5200_psc_ac97_gpio_reset
    sound/soc: mpc5200_psc_ac97: Use gpio pins for cold reset

 arch/powerpc/include/asm/mpc52xx.h           |    1 +
 arch/powerpc/include/asm/mpc52xx_psc.h       |    1 +
 arch/powerpc/platforms/52xx/mpc52xx_common.c |  113 ++++++++++++++++++++++++++
 sound/soc/fsl/mpc5200_psc_ac97.c             |   22 ++++-
 4 files changed, 133 insertions(+), 4 deletions(-)

-DISCLAIMER: an automatically appended disclaimer may follow. By posting-
-to a public e-mail mailing list I hereby grant permission to distribute-
-and copy this message.-


This e-mail and the information, including any attachments, it contains are intended to be a confidential communication only to the person or entity to whom it is addressed and may contain information that is privileged. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please immediately notify the sender and destroy the original message.

Thank you.

Please consider the environment before printing this email.