> -----Original Message----- > From: linux-mmc-owner@xxxxxxxxxxxxxxx [mailto:linux-mmc- > owner@xxxxxxxxxxxxxxx] On Behalf Of Ohad Ben-Cohen > Sent: Tuesday, July 06, 2010 6:08 AM > To: linux-wireless@xxxxxxxxxxxxxxx; linux-mmc@xxxxxxxxxxxxxxx; linux- > omap@xxxxxxxxxxxxxxx > Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux@xxxxxxxxxxxxxxxx; > 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 <ohadb@xxxxxx> > > 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 <ohadb@xxxxxx> > --- > 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@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
