Return-path: Received: from arroyo.ext.ti.com ([192.94.94.40]:43538 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753050Ab0GHDjy convert rfc822-to-8bit (ORCPT ); Wed, 7 Jul 2010 23:39:54 -0400 From: "Ghorai, Sukumar" To: Ohad Ben-Cohen , "linux-wireless@vger.kernel.org" , "linux-mmc@vger.kernel.org" , "linux-omap@vger.kernel.org" CC: "linux-arm-kernel@lists.infradead.org" , "linux@arm.linux.org.uk" , "Chikkature Rajashekar, Madhusudhan" , Luciano Coelho , "akpm@linux-foundation.org" , San Mehat , "Ben-cohen, Ohad" Date: Thu, 8 Jul 2010 09:09:22 +0530 Subject: RE: [PATCH 04/15] mmc: support embedded data field in mmc_host Message-ID: <2A3DCF3DA181AD40BDE86A3150B27B6B030E10C9B5@dbde02.ent.ti.com> References: <1278376666-3509-1-git-send-email-ohad@wizery.com> <1278376666-3509-5-git-send-email-ohad@wizery.com> In-Reply-To: <1278376666-3509-5-git-send-email-ohad@wizery.com> Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: > -----Original Message----- > From: linux-mmc-owner@vger.kernel.org [mailto:linux-mmc- > owner@vger.kernel.org] On Behalf Of Ohad Ben-Cohen > Sent: Tuesday, July 06, 2010 6:08 AM > To: linux-wireless@vger.kernel.org; linux-mmc@vger.kernel.org; linux- > omap@vger.kernel.org > Cc: linux-arm-kernel@lists.infradead.org; linux@arm.linux.org.uk; > Chikkature Rajashekar, Madhusudhan; Luciano Coelho; akpm@linux- > foundation.org; San Mehat; Ben-cohen, Ohad > Subject: [PATCH 04/15] mmc: support embedded data field in mmc_host > > From: Ohad Ben-Cohen > > Add support to set/get mmc_host private embedded > data. > > This is needed to allow software to dynamically > create (and remove) SDIO functions which represents > embedded SDIO devices. > > Typically, it will be used to set the context of > a driver that is creating a new SDIO function > (and would then expect to be able to get that context > back upon creation of the new sdio func). > > Signed-off-by: Ohad Ben-Cohen > --- > drivers/mmc/core/Kconfig | 8 ++++++++ > include/linux/mmc/host.h | 16 ++++++++++++++++ > 2 files changed, 24 insertions(+), 0 deletions(-) > > diff --git a/drivers/mmc/core/Kconfig b/drivers/mmc/core/Kconfig > index bb22ffd..ab27eb3 100644 > --- a/drivers/mmc/core/Kconfig > +++ b/drivers/mmc/core/Kconfig > @@ -16,3 +16,11 @@ config MMC_UNSAFE_RESUME > > This option sets a default which can be overridden by the > module parameter "removable=0" or "removable=1". > + > +config MMC_EMBEDDED_SDIO > + boolean "MMC embedded SDIO device support" > + help > + If you say Y here, support will be added for embedded SDIO > + devices (e.g. hardwired embedded WLAN SDIO devices). > + Such devices require software support for emulating > + card detect events. > diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h > index f65913c..9a48486 100644 > --- a/include/linux/mmc/host.h > +++ b/include/linux/mmc/host.h > @@ -209,6 +209,10 @@ struct mmc_host { > struct led_trigger *led; /* activity led */ > #endif > > +#ifdef CONFIG_MMC_EMBEDDED_SDIO > + void *embedded_data; > +#endif > + > struct dentry *debugfs_root; > > unsigned long private[0] ____cacheline_aligned; > @@ -264,5 +268,17 @@ static inline void mmc_set_disable_delay(struct > mmc_host *host, > host->disable_delay = disable_delay; > } > > +#ifdef CONFIG_MMC_EMBEDDED_SDIO > +static inline void *mmc_get_embedded_data(struct mmc_host *host) > +{ > + return host->embedded_data; > +} > + > +static inline void mmc_set_embedded_data(struct mmc_host *host, void > *data) > +{ > + host->embedded_data = data; > +} > +#endif > + [Ghorai] we can avoid CONFIG_MMC_EMBEDDED_SDIO flag itself. Why we are passing fixed data? We can enquire form card for the functions, features,.. and at runtime itself. And we are adding many compile-time/kconfig options in this patch series. > #endif > > -- > 1.7.0.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html