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Date: Fri, 8 Aug 2014 14:35:10 +0100
From: Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>
To: broonie@...aro.org, lee.jones@...aro.org, sameo@...ux.intel.com,
lgirdwood@...il.com, perex@...ex.cz, tiwai@...e.de
Cc: alsa-devel@...a-project.org, patches@...nsource.wolfsonmicro.com,
linux-kernel@...r.kernel.org
Subject: [PATCH 3/3 v4 RESEND] ASoC: arizona: Add DVFS handling for sample
rate control
From: Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>
Some codecs need to boost DVFS for higher sample rates.
Signed-off-by: Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>
Signed-off-by: Charles Keepax <ckeepax@...nsource.wolfsonmicro.com>
---
sound/soc/codecs/arizona.c | 22 +++++++++++++++++++++-
1 files changed, 21 insertions(+), 1 deletions(-)
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c
index d441d80..c5b6be2 100644
--- a/sound/soc/codecs/arizona.c
+++ b/sound/soc/codecs/arizona.c
@@ -1185,7 +1185,7 @@ static int arizona_hw_params_rate(struct snd_pcm_substream *substream,
struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec);
struct arizona_dai_priv *dai_priv = &priv->dai[dai->id - 1];
int base = dai->driver->base;
- int i, sr_val;
+ int i, sr_val, ret;
/*
* We will need to be more flexible than this in future,
@@ -1201,6 +1201,26 @@ static int arizona_hw_params_rate(struct snd_pcm_substream *substream,
}
sr_val = i;
+ switch (priv->arizona->type) {
+ case WM5102:
+ case WM8997:
+ if (arizona_sr_vals[sr_val] >= 88200)
+ ret = arizona_dvfs_up(priv->arizona,
+ ARIZONA_DVFS_SR1_RQ);
+ else
+ ret = arizona_dvfs_down(priv->arizona,
+ ARIZONA_DVFS_SR1_RQ);
+
+ if (ret != 0) {
+ arizona_aif_err(dai, "Failed to change DVFS %d\n", ret);
+ return ret;
+ }
+ break;
+
+ default:
+ break;
+ }
+
switch (dai_priv->clk) {
case ARIZONA_CLK_SYSCLK:
switch (priv->arizona->type) {
--
1.7.2.5
--
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