> -----Original Message----- > From: [email protected] [mailto:linux-arm-msm- > [email protected]] On Behalf Of Aaron Lu > Sent: Monday, March 26, 2012 8:47 AM > To: Subhash Jadavani > Cc: [email protected]; [email protected]; > [email protected] > Subject: Re: [PATCH v1 1/1] mmc: bus: print bus speed mode of UHS-I card > > Hi Subhash, > > On Fri, Mar 23, 2012 at 11:26:36AM +0530, Subhash Jadavani wrote: > > When UHS-I card is detected also print the bus speed mode in which > > UHS-I card will be running. > > The patch looks correct to me, except that I' m not sure if this is needed. > /sys/kernel/debug/mmc/ios also has such info.
Thanks for pointing it out. Actually we are already printing the HS200/DDR (for eMMC) bus speed mode along with card detected print. So why not bus speed mode for UHS-I cards. It really gives good impression to user what this card is capable of doing by just looking at this print. Correct we can this information from /sys/kernel/debug/mmc/ios but this needs extra effort than just looking at the kernel logs. Also note that mmc_ios_show() function is currently not updated to print the UHS-I bus speed modes in user readable format. We need to fix this as well probably as separate patch. Regards, Subhash > > -Aaron > > > > > Signed-off-by: Subhash Jadavani <[email protected]> > > --- > > drivers/mmc/core/bus.c | 26 +++++++++++++++++++++++++- > > 1 files changed, 25 insertions(+), 1 deletions(-) > > > > diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index > > 5d011a3..0517a91 100644 > > --- a/drivers/mmc/core/bus.c > > +++ b/drivers/mmc/core/bus.c > > @@ -267,6 +267,7 @@ int mmc_add_card(struct mmc_card *card) { > > int ret; > > const char *type; > > + const char *uhs_bus_speed_mode = ""; > > > > dev_set_name(&card->dev, "%s:%04x", mmc_hostname(card- > >host), > > card->rca); > > > > @@ -296,6 +297,28 @@ int mmc_add_card(struct mmc_card *card) > > break; > > } > > > > + if (mmc_sd_card_uhs(card)) { > > + switch (card->sd_bus_speed) { > > + case UHS_SDR104_BUS_SPEED: > > + uhs_bus_speed_mode = "SDR104 "; > > + break; > > + case UHS_SDR50_BUS_SPEED: > > + uhs_bus_speed_mode = "SDR50 "; > > + break; > > + case UHS_DDR50_BUS_SPEED: > > + uhs_bus_speed_mode = "DDR50 "; > > + break; > > + case UHS_SDR25_BUS_SPEED: > > + uhs_bus_speed_mode = "SDR25 "; > > + break; > > + case UHS_SDR12_BUS_SPEED: > > + uhs_bus_speed_mode = "SDR12 "; > > + break; > > + default: > > + uhs_bus_speed_mode = ""; > > + break; > > + } > > + } > > if (mmc_host_is_spi(card->host)) { > > pr_info("%s: new %s%s%s card on SPI\n", > > mmc_hostname(card->host), > > @@ -303,12 +326,13 @@ int mmc_add_card(struct mmc_card *card) > > mmc_card_ddr_mode(card) ? "DDR " : "", > > type); > > } else { > > - pr_info("%s: new %s%s%s%s card at address %04x\n", > > + pr_info("%s: new %s%s%s%s%s card at address %04x\n", > > mmc_hostname(card->host), > > mmc_card_uhs(card) ? "ultra high speed " : > > (mmc_card_highspeed(card) ? "high speed " : ""), > > (mmc_card_hs200(card) ? "HS200 " : ""), > > mmc_card_ddr_mode(card) ? "DDR " : "", > > + uhs_bus_speed_mode, > > type, card->rca); > > } > > > > -- > > 1.7.1.1 > > > > -- > > Sent by a consultant of the Qualcomm Innovation Center, Inc. > > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora > Forum. > > -- > > To unsubscribe from this list: send the line "unsubscribe linux-mmc" > > in the body of a message to [email protected] More > majordomo > > info at http://vger.kernel.org/majordomo-info.html > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in > the body of a message to [email protected] 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 [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
