From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Fitzgerald Subject: [PATCH 3/4] ASoC: arizona: Add DVFS handling for sample rate control Date: Mon, 9 Jun 2014 16:03:56 +0100 Message-ID: <20140609150356.GD5229@opensource.wolfsonmicro.com> References: <20140609150013.GA5229@opensource.wolfsonmicro.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20140609150013.GA5229@opensource.wolfsonmicro.com> Sender: linux-kernel-owner@vger.kernel.org To: sameo@linux.intel.com, lee.jones@linaro.org, ckeepax@opensource.wolfsonmicro.com, broonie@kernel.org, lgirdwood@gmail.com, perex@perex.cz, tiwai@suse.de Cc: alsa-devel@alsa-project.org, patches@opensource.wolfsonmicro.com, linux-kernel@vger.kernel.org List-Id: alsa-devel@alsa-project.org Some codecs need to boost DVFS for higher sample rates. Signed-off-by: Richard Fitzgerald --- 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 1b14105..7e33d1b 100644 --- a/sound/soc/codecs/arizona.c +++ b/sound/soc/codecs/arizona.c @@ -1135,7 +1135,7 @@ 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, @@ -1151,6 +1151,26 @@ 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: snd_soc_update_bits(codec, ARIZONA_SAMPLE_RATE_1, -- 1.7.2.5