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authorCharles Keepax <ckeepax@opensource.wolfsonmicro.com>2017-01-06 14:24:41 +0000
committerMark Brown <broonie@kernel.org>2017-01-06 18:09:01 +0000
commitaf813a6fd8740537bfa5801768e90cc95d9262a3 (patch)
treee083666c3b09a46e2dbec460b9c686fc57ec1dd4 /sound/soc/codecs/arizona.h
parenta5de5b74a50113564a1e0850e2da96c37c35e55d (diff)
downloadlinux-af813a6fd8740537bfa5801768e90cc95d9262a3.tar.bz2
ASoC: wm_adsp: Add mechanism to preload firmware on a core
As requirements to bring up audio paths are continuous getting tighter and the DSP download to most ADSP devices happens over an external bus it can become an important factor in the path bring up time. As such sometimes it is a reasonable trade off to download the firmware ahead of when it will be required and take a small hit on power consumption for keeping the core powered up. This "preloading" adds an additional control for each DSP core "DSPx Preload Switch" that when set to true will power up the DSP core and download the firmware currently selected in the "DSPx Firmware" control. Whilst the core is preloaded the current firmware can not be changed and the CODEC will be kept powered up and SYSCLK held on. Although future improvements may allow the SYSCLK to be powered down as well because the hardware only requires SYSCLK whilst the download is actually taking place, but this is not covered in this series. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/arizona.h')
-rw-r--r--sound/soc/codecs/arizona.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/soc/codecs/arizona.h b/sound/soc/codecs/arizona.h
index 56707860657c..1822e3b3de80 100644
--- a/sound/soc/codecs/arizona.h
+++ b/sound/soc/codecs/arizona.h
@@ -192,6 +192,7 @@ extern unsigned int arizona_mixer_values[ARIZONA_NUM_MIXER_INPUTS];
#define ARIZONA_DSP_ROUTES(name) \
{ name, NULL, name " Preloader"}, \
{ name " Preloader", NULL, "SYSCLK" }, \
+ { name " Preload", NULL, name " Preloader"}, \
{ name, NULL, name " Aux 1" }, \
{ name, NULL, name " Aux 2" }, \
{ name, NULL, name " Aux 3" }, \