ASoC: AC97 driver for mpc5200

I've implemented retries for when the AC97 hardware doesn't reset on
first try. About 10% of the time both the Efika and pcm030 AC97 codecs
don't reset on first try and need to be poked multiple times.  Failure
is indicated by not having the link clock start ticking. Every once in
a while even five pokes won't get the link started and I have to power
cycle.

Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig
index 1918c78b858e..3bce952d7c5f 100644
--- a/sound/soc/fsl/Kconfig
+++ b/sound/soc/fsl/Kconfig
@@ -29,3 +29,14 @@ config SND_SOC_MPC5200_I2S
         select PPC_BESTCOMM_GEN_BD
         help
           Say Y here to support the MPC5200 PSCs in I2S mode.
+
+config SND_SOC_MPC5200_AC97
+        tristate "Freescale MPC5200 PSC in AC97 mode driver"
+        depends on PPC_MPC52xx && PPC_BESTCOMM
+        select AC97_BUS
+        select SND_MPC52xx_DMA
+        select PPC_BESTCOMM_GEN_BD
+        help
+          Say Y here to support the MPC5200 PSCs in AC97 mode.
+
+