ASoC: fsl_ssi: Add driver suspend and resume to support MEGA Fast
authorZidan Wang <zidan.wang@freescale.com>
Fri, 18 Sep 2015 03:09:12 +0000 (11:09 +0800)
committerMark Brown <broonie@kernel.org>
Mon, 5 Oct 2015 16:26:18 +0000 (17:26 +0100)
commit05cf237972fe65eb537ea4f10e5627ceeb8f89b6
tree50d08578783b8b296e39850ffce952632bc714cd
parentf9f4fa61aab9417e40898cf6706fffa94005dc44
ASoC: fsl_ssi: Add driver suspend and resume to support MEGA Fast

For i.MX6 SoloX, there is a mode of the SoC to shutdown all power
source of modules during system suspend and resume procedure. Thus,
SSI needs to save all the values of registers before the system
suspend and restore them after the system resume.

The register SFCSR is volatile, but some bits in it need to be
recovered after suspend/resume.

Signed-off-by: Zidan Wang <zidan.wang@freescale.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
sound/soc/fsl/fsl_ssi.c