| Message ID | 1400840721-11050-2-git-send-email-jh80.chung@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 23 May 2014 15:55, Jaehoon Chung <jh80.chung@samsung.com> wrote: > From: Ludovic Desroches <ludovic.desroches@atmel.com> > > Some hosts manage several slots. In these case information such as the > bus width, chi detect and others are into the slot node. So we have to > parse child node. If not NULL, slot node will be used instead of the > device node. > > Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> > Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> > --- > drivers/mmc/core/host.c | 13 +++++++++---- > include/linux/mmc/host.h | 10 +++++++++- > 2 files changed, 18 insertions(+), 5 deletions(-) > > diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c > index 95cceae..0f677b3 100644 > --- a/drivers/mmc/core/host.c > +++ b/drivers/mmc/core/host.c > @@ -298,15 +298,17 @@ static inline void mmc_host_clk_sysfs_init(struct mmc_host *host) > #endif > > /** > - * mmc_of_parse() - parse host's device-tree node > + * __mmc_of_parse() - parse host's device-tree node IMO it would be better to rename this function, something like mmc_of_parse_slot().
On Fri, May 23, 2014 at 07:25:19PM +0900, Jaehoon Chung wrote: > From: Ludovic Desroches <ludovic.desroches@atmel.com> > > Some hosts manage several slots. In these case information such as the > bus width, chi detect and others are into the slot node. So we have to /s/chi detect/chip detect > parse child node. If not NULL, slot node will be used instead of the > device node. > > Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> > Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> > --- > drivers/mmc/core/host.c | 13 +++++++++---- > include/linux/mmc/host.h | 10 +++++++++- > 2 files changed, 18 insertions(+), 5 deletions(-) > > diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c > index 95cceae..0f677b3 100644 > --- a/drivers/mmc/core/host.c > +++ b/drivers/mmc/core/host.c > @@ -298,15 +298,17 @@ static inline void mmc_host_clk_sysfs_init(struct mmc_host *host) > #endif > > /** > - * mmc_of_parse() - parse host's device-tree node > + * __mmc_of_parse() - parse host's device-tree node > * @host: host whose node should be parsed. > + * @slot : some device provide several slots so the node to parse > + * is not the host one. > * > * To keep the rest of the MMC subsystem unaware of whether DT has been > * used to to instantiate and configure this host instance or not, we > * parse the properties and set respective generic mmc-host flags and > * parameters. > */ > -int mmc_of_parse(struct mmc_host *host) > +int __mmc_of_parse(struct mmc_host *host, struct device_node *slot) > { > struct device_node *np; > u32 bus_width; > @@ -317,7 +319,10 @@ int mmc_of_parse(struct mmc_host *host) > if (!host->parent || !host->parent->of_node) > return 0; > > - np = host->parent->of_node; > + if (slot) > + np = slot; > + else > + np = host->parent->of_node; > > /* "bus-width" is translated to MMC_CAP_*_BIT_DATA flags */ > if (of_property_read_u32(np, "bus-width", &bus_width) < 0) { > @@ -459,7 +464,7 @@ out: > return ret; > } > > -EXPORT_SYMBOL(mmc_of_parse); > +EXPORT_SYMBOL(__mmc_of_parse); > > /** > * mmc_alloc_host - initialise the per-host structure. > diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h > index 7960424..c62af91 100644 > --- a/include/linux/mmc/host.h > +++ b/include/linux/mmc/host.h > @@ -372,7 +372,15 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *); > int mmc_add_host(struct mmc_host *); > void mmc_remove_host(struct mmc_host *); > void mmc_free_host(struct mmc_host *); > -int mmc_of_parse(struct mmc_host *host); > +int __mmc_of_parse(struct mmc_host *host, struct device_node *slot); > +/* > + * mmc_of_parse - parse host's device-tree node > + * @host: host whose node should be parsed. > + */ > +static inline int mmc_of_parse(struct mmc_host *host) > +{ > + return __mmc_of_parse(host, NULL); > +} > > static inline void *mmc_priv(struct mmc_host *host) > { > -- > 1.7.9.5 > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi, On 05/26/2014 05:09 PM, Ludovic Desroches wrote: > On Fri, May 23, 2014 at 07:25:19PM +0900, Jaehoon Chung wrote: >> From: Ludovic Desroches <ludovic.desroches@atmel.com> >> >> Some hosts manage several slots. In these case information such as the >> bus width, chi detect and others are into the slot node. So we have to > > /s/chi detect/chip detect Will fix. Tushar have suggested the rename mmc_of_parse_slot() instead of __mmc_of_parse(). I'm not sure which name is better. How about? If never mind, i will change to mmc_of_parse_slot(), then send patch-v2. Best Regards, Jaehoon Chung > >> parse child node. If not NULL, slot node will be used instead of the >> device node. >> >> Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> >> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com> >> --- >> drivers/mmc/core/host.c | 13 +++++++++---- >> include/linux/mmc/host.h | 10 +++++++++- >> 2 files changed, 18 insertions(+), 5 deletions(-) >> >> diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c >> index 95cceae..0f677b3 100644 >> --- a/drivers/mmc/core/host.c >> +++ b/drivers/mmc/core/host.c >> @@ -298,15 +298,17 @@ static inline void mmc_host_clk_sysfs_init(struct mmc_host *host) >> #endif >> >> /** >> - * mmc_of_parse() - parse host's device-tree node >> + * __mmc_of_parse() - parse host's device-tree node >> * @host: host whose node should be parsed. >> + * @slot : some device provide several slots so the node to parse >> + * is not the host one. >> * >> * To keep the rest of the MMC subsystem unaware of whether DT has been >> * used to to instantiate and configure this host instance or not, we >> * parse the properties and set respective generic mmc-host flags and >> * parameters. >> */ >> -int mmc_of_parse(struct mmc_host *host) >> +int __mmc_of_parse(struct mmc_host *host, struct device_node *slot) >> { >> struct device_node *np; >> u32 bus_width; >> @@ -317,7 +319,10 @@ int mmc_of_parse(struct mmc_host *host) >> if (!host->parent || !host->parent->of_node) >> return 0; >> >> - np = host->parent->of_node; >> + if (slot) >> + np = slot; >> + else >> + np = host->parent->of_node; >> >> /* "bus-width" is translated to MMC_CAP_*_BIT_DATA flags */ >> if (of_property_read_u32(np, "bus-width", &bus_width) < 0) { >> @@ -459,7 +464,7 @@ out: >> return ret; >> } >> >> -EXPORT_SYMBOL(mmc_of_parse); >> +EXPORT_SYMBOL(__mmc_of_parse); >> >> /** >> * mmc_alloc_host - initialise the per-host structure. >> diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h >> index 7960424..c62af91 100644 >> --- a/include/linux/mmc/host.h >> +++ b/include/linux/mmc/host.h >> @@ -372,7 +372,15 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *); >> int mmc_add_host(struct mmc_host *); >> void mmc_remove_host(struct mmc_host *); >> void mmc_free_host(struct mmc_host *); >> -int mmc_of_parse(struct mmc_host *host); >> +int __mmc_of_parse(struct mmc_host *host, struct device_node *slot); >> +/* >> + * mmc_of_parse - parse host's device-tree node >> + * @host: host whose node should be parsed. >> + */ >> +static inline int mmc_of_parse(struct mmc_host *host) >> +{ >> + return __mmc_of_parse(host, NULL); >> +} >> >> static inline void *mmc_priv(struct mmc_host *host) >> { >> -- >> 1.7.9.5 >> > -- > 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 > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 26 May 2014 10:38, Jaehoon Chung <jh80.chung@gmail.com> wrote: > Hi, > > On 05/26/2014 05:09 PM, Ludovic Desroches wrote: >> On Fri, May 23, 2014 at 07:25:19PM +0900, Jaehoon Chung wrote: >>> From: Ludovic Desroches <ludovic.desroches@atmel.com> >>> >>> Some hosts manage several slots. In these case information such as the >>> bus width, chi detect and others are into the slot node. So we have to >> >> /s/chi detect/chip detect > Will fix. > > Tushar have suggested the rename mmc_of_parse_slot() instead of __mmc_of_parse(). > I'm not sure which name is better. How about? > > If never mind, i will change to mmc_of_parse_slot(), then send patch-v2. I would prefer to keep it as is, but just because that's my taste. :-) Kind regards Ulf Hansson -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi, Ulf. On 05/26/2014 05:44 PM, Ulf Hansson wrote: > On 26 May 2014 10:38, Jaehoon Chung <jh80.chung@gmail.com> wrote: >> Hi, >> >> On 05/26/2014 05:09 PM, Ludovic Desroches wrote: >>> On Fri, May 23, 2014 at 07:25:19PM +0900, Jaehoon Chung wrote: >>>> From: Ludovic Desroches <ludovic.desroches@atmel.com> >>>> >>>> Some hosts manage several slots. In these case information such as the >>>> bus width, chi detect and others are into the slot node. So we have to >>> >>> /s/chi detect/chip detect >> Will fix. >> >> Tushar have suggested the rename mmc_of_parse_slot() instead of __mmc_of_parse(). >> I'm not sure which name is better. How about? >> >> If never mind, i will change to mmc_of_parse_slot(), then send patch-v2. > > I would prefer to keep it as is, but just because that's my taste. :-) Ok. I think so. I want to merge this patch-set for fixing the dw-mmc problem, before release the 3.16. dw-mmc controller also used the slot concept, so some property didn't parse with mmc_of_parse(). Best Regards, Jaehoon Chung > > Kind regards > Ulf Hansson > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index 95cceae..0f677b3 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -298,15 +298,17 @@ static inline void mmc_host_clk_sysfs_init(struct mmc_host *host) #endif /** - * mmc_of_parse() - parse host's device-tree node + * __mmc_of_parse() - parse host's device-tree node * @host: host whose node should be parsed. + * @slot : some device provide several slots so the node to parse + * is not the host one. * * To keep the rest of the MMC subsystem unaware of whether DT has been * used to to instantiate and configure this host instance or not, we * parse the properties and set respective generic mmc-host flags and * parameters. */ -int mmc_of_parse(struct mmc_host *host) +int __mmc_of_parse(struct mmc_host *host, struct device_node *slot) { struct device_node *np; u32 bus_width; @@ -317,7 +319,10 @@ int mmc_of_parse(struct mmc_host *host) if (!host->parent || !host->parent->of_node) return 0; - np = host->parent->of_node; + if (slot) + np = slot; + else + np = host->parent->of_node; /* "bus-width" is translated to MMC_CAP_*_BIT_DATA flags */ if (of_property_read_u32(np, "bus-width", &bus_width) < 0) { @@ -459,7 +464,7 @@ out: return ret; } -EXPORT_SYMBOL(mmc_of_parse); +EXPORT_SYMBOL(__mmc_of_parse); /** * mmc_alloc_host - initialise the per-host structure. diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 7960424..c62af91 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -372,7 +372,15 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *); int mmc_add_host(struct mmc_host *); void mmc_remove_host(struct mmc_host *); void mmc_free_host(struct mmc_host *); -int mmc_of_parse(struct mmc_host *host); +int __mmc_of_parse(struct mmc_host *host, struct device_node *slot); +/* + * mmc_of_parse - parse host's device-tree node + * @host: host whose node should be parsed. + */ +static inline int mmc_of_parse(struct mmc_host *host) +{ + return __mmc_of_parse(host, NULL); +} static inline void *mmc_priv(struct mmc_host *host) {