From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lars-Peter Clausen Subject: Re: [alsa-devel] [RFC][PATCH 1/3] ASoC: core: Move the default regmap I/O setting to snd_soc_register_codec() Date: Tue, 04 Mar 2014 10:50:59 +0100 Message-ID: <5315A203.2060103@metafoo.de> References: <1393921529-28985-1-git-send-email-Li.Xiubo@freescale.com> <1393921529-28985-2-git-send-email-Li.Xiubo@freescale.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1393921529-28985-2-git-send-email-Li.Xiubo@freescale.com> Sender: linux-kernel-owner@vger.kernel.org To: Xiubo Li Cc: broonie@kernel.org, lgirdwood@gmail.com, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org List-Id: alsa-devel@alsa-project.org On 03/04/2014 09:25 AM, Xiubo Li wrote: > Add the default regmap I/O setting to snd_soc_register_codec() while > the CODEC is initialising, which will be called by CODEC driver device > probe(), and then we can make set_cache_io() go away entirely from each > CODEC ASoC probe. > > Signed-off-by: Xiubo Li > --- > include/sound/soc.h | 3 +++ > sound/soc/soc-core.c | 11 +++++++++++ > 2 files changed, 14 insertions(+) > > diff --git a/include/sound/soc.h b/include/sound/soc.h > index 4c4d7e1..94bc1c4 100644 > --- a/include/sound/soc.h > +++ b/include/sound/soc.h > @@ -749,6 +749,9 @@ struct snd_soc_codec_driver { > int (*set_pll)(struct snd_soc_codec *codec, int pll_id, int source, > unsigned int freq_in, unsigned int freq_out); > > + /* codec regmap */ > + struct regmap *regmap; > + Nope. The driver struct is globally shared between all device instances, the regmap struct is device instance specific. The proper way to solve this is to have a function like snd_soc_register_codec_with_io() which takes a pointer to the regmap struct.