Messages in this thread | | | Date | Fri, 5 Dec 2014 17:01:56 +0000 | From | Charles Keepax <> | Subject | Re: [alsa-devel][PATCH v3] ASoC: wm8960: Let wm8960 codec driver manage its own MCLK |
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On Thu, Dec 04, 2014 at 08:41:19PM +0800, Zidan Wang wrote: > When we want to use wm8960 codec, we should enable its MCLK in machine > driver. It's reasonable for wm8960 codec driver to manage its own MCLK to > save power. > > If platform data is not supplied, we will get MCLK from device tree and check > the return code to handle probe deferral. > > Enable runtime power management, and auto enable/disable MCLK in pm_runtime > resume and suspend. When wm8960 codec is being used, it will triger resume() > to enable MCLK. When codec is not being used, it will triger suspend() to > disable MCLK. > > Signed-off-by: Zidan Wang <b50113@freescale.com> > --- > include/sound/wm8960.h | 1 + > sound/soc/codecs/wm8960.c | 56 ++++++++++++++++++++++++++++++++++++++++++++--- > 2 files changed, 54 insertions(+), 3 deletions(-) > > diff --git a/include/sound/wm8960.h b/include/sound/wm8960.h > index e8ce8ee..d7e84ed 100644 > --- a/include/sound/wm8960.h > +++ b/include/sound/wm8960.h > @@ -16,6 +16,7 @@ > #define WM8960_DRES_MAX 3 > > struct wm8960_data { > + struct clk *mclk;
Is this really pdata? Would the pdata entry to locate the clock not be a string holding the clock name that you call clk_get on, rather than a clk pointer itself? Probably this should go in wm8960_priv instead.
Thanks, Charles
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