| Message ID | 1316180377-30969-3-git-send-email-girish.shivananjappa@linaro.org |
|---|---|
| State | New |
| Headers | show |
Hi Girish, On Fri, Sep 16 2011, Girish K S wrote: > This patch adds the power off notification handling > during suspend and system poweroff. > For suspend mode short timeout is used, whereas for the > normal poweroff long timeout is used. > > Signed-off-by: Girish K S <girish.shivananjappa@linaro.org> > --- > drivers/mmc/core/core.c | 34 ++++++++++++++++++++++++++++++++++ > drivers/mmc/core/mmc.c | 5 ++++- > drivers/mmc/host/sdhci.c | 10 ++++++++++ > include/linux/mmc/card.h | 19 +++++++++++++++++++ > include/linux/mmc/host.h | 4 ++++ > 5 files changed, 71 insertions(+), 1 deletions(-) > > diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c > index 91a0a74..157060f 100644 > --- a/drivers/mmc/core/core.c > +++ b/drivers/mmc/core/core.c > @@ -1130,9 +1130,41 @@ static void mmc_power_up(struct mmc_host *host) > > static void mmc_power_off(struct mmc_host *host) > { > + struct mmc_card *card = host->card; > + unsigned int notify_type; > + unsigned int timeout; > + int err; > + > host->ios.clock = 0; > host->ios.vdd = 0; > > + if (card != NULL && mmc_card_mmc(card) && > + (mmc_card_powernotify_on(card))) { > + > + if (host->power_notify_type == MMC_HOST_PW_NOTIFY_SHORT) { > + notify_type = EXT_CSD_POWER_OFF_SHORT; > + timeout = card->ext_csd.generic_cmd6_time; > + mmc_card_set_powernotify_short(card); > + } else { > + notify_type = EXT_CSD_POWER_OFF_LONG; > + timeout = card->ext_csd.power_off_longtime; > + mmc_card_set_powernotify_long(card); > + } > + > + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, > + EXT_CSD_POWER_OFF_NOTIFICATION, > + notify_type, timeout); > + > + if (err && err != -EBADMSG) > + printk(KERN_ERR "Device failed to respond " > + "within %d poweroff time." > + "forcefully powering down" > + "the device\n", timeout); You don't have any space between ".f" in the message. I suggest: pr_err("Device failed to respond within %d poweroff " "time. Forcefully powering down the device\n", timeout); > + > + /*Set the card state to no notification after the poweroff*/ A space between /* */. > + mmc_card_set_powernotify_off(card); > + } > + > /* > * Reset ocr mask to be the highest possible voltage supported for > * this mmc host. This value will be used at next power up. > @@ -2022,6 +2054,7 @@ int mmc_pm_notify(struct notifier_block *notify_block, > > spin_lock_irqsave(&host->lock, flags); > host->rescan_disable = 1; > + host->power_notify_type = MMC_HOST_PW_NOTIFY_SHORT; > spin_unlock_irqrestore(&host->lock, flags); > cancel_delayed_work_sync(&host->detect); > > @@ -2044,6 +2077,7 @@ int mmc_pm_notify(struct notifier_block *notify_block, > > spin_lock_irqsave(&host->lock, flags); > host->rescan_disable = 0; > + host->power_notify_type = MMC_HOST_PW_NOTIFY_LONG; > spin_unlock_irqrestore(&host->lock, flags); > mmc_detect_change(host, 0); > > diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c > index 2f06b37..63cc77b 100644 > --- a/drivers/mmc/core/mmc.c > +++ b/drivers/mmc/core/mmc.c > @@ -715,7 +715,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, > * If the host supports the power_off_notify capability then > * set the notification byte in the ext_csd register of device > */ > - if (host->caps & MMC_CAP_POWER_OFF_NOTIFY) { > + if ((host->caps & MMC_CAP_POWER_OFF_NOTIFY) && The && is indented weirdly. Just use a space between ") &&". > + (mmc_card_powernotify_off(card))) { > err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, > EXT_CSD_POWER_OFF_NOTIFICATION, > EXT_CSD_POWER_ON, > @@ -724,6 +725,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, > goto free_card; > } > > + if (!err) > + mmc_card_set_powernotify_on(card); Extra newline needed here, as there was before you added these two lines. > /* > * Activate high speed (if supported) > */ > diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c > index 0e02cc1..92ea734 100644 > --- a/drivers/mmc/host/sdhci.c > +++ b/drivers/mmc/host/sdhci.c > @@ -2566,6 +2566,16 @@ int sdhci_add_host(struct sdhci_host *host) > if (caps[1] & SDHCI_DRIVER_TYPE_D) > mmc->caps |= MMC_CAP_DRIVER_TYPE_D; > > + /* > + * If Notify capability is enabled and > + * notify type is not initialised by host, set default to > + * long power off notify timeout value > + */ > + if (mmc->caps & MMC_CAP_POWER_OFF_NOTIFY) > + mmc->power_notify_type = MMC_HOST_PW_NOTIFY_SHORT; > + else > + mmc->power_notify_type = MMC_HOST_PW_NOTIFY_NONE; > + The comment says it sets the default to long power off if power_notify_type is unset, but the code sets power_notify_type to short power off regardless of whether power_notify_type was set. The comment and code should agree. > /* Initial value for re-tuning timer count */ > host->tuning_count = (caps[1] & SDHCI_RETUNING_TIMER_COUNT_MASK) >> > SDHCI_RETUNING_TIMER_COUNT_SHIFT; > diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h > index 2bf2843..1d6a832 100644 > --- a/include/linux/mmc/card.h > +++ b/include/linux/mmc/card.h > @@ -190,6 +190,11 @@ struct mmc_card { > #define MMC_QUIRK_DISABLE_CD (1<<5) /* disconnect CD/DAT[3] resistor */ > #define MMC_QUIRK_INAND_CMD38 (1<<6) /* iNAND devices have broken CMD38 */ > #define MMC_QUIRK_BLK_NO_CMD23 (1<<7) /* Avoid CMD23 for regular multiblock */ > + unsigned int poweroff_notify_state;/*eMMC4.5 notify feature */ > +#define MMC_NO_POWER_NOTIFICATION 0 > +#define MMC_POWERED_ON 1 > +#define MMC_POWEROFF_SHORT 2 > +#define MMC_POWEROFF_LONG 3 > > unsigned int erase_size; /* erase size in sectors */ > unsigned int erase_shift; /* if erase unit is power 2 */ > @@ -325,6 +330,20 @@ static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data) > #define mmc_sd_card_set_uhs(c) ((c)->state |= MMC_STATE_ULTRAHIGHSPEED) > #define mmc_card_set_ext_capacity(c) ((c)->state |= MMC_CARD_SDXC) > > +#define mmc_card_powernotify_on(c) \ > + ((c)->poweroff_notify_state == MMC_POWERED_ON) > +#define mmc_card_powernotify_off(c) \ > + ((c)->poweroff_notify_state == MMC_NO_POWER_NOTIFICATION) > + > +#define mmc_card_set_powernotify_off(c) \ > + ((c)->poweroff_notify_state = MMC_NO_POWER_NOTIFICATION) > +#define mmc_card_set_powernotify_on(c) \ > + ((c)->poweroff_notify_state = MMC_POWERED_ON) > +#define mmc_card_set_powernotify_short(c) \ > + ((c)->poweroff_notify_state = MMC_POWEROFF_SHORT) > +#define mmc_card_set_powernotify_long(c) \ > + ((c)->poweroff_notify_state = MMC_POWEROFF_LONG) > + I don't think these macros need to exist. You can already do the same thing in one line of code, and it would be clearer to be modifying/testing poweroff_notify_state directly. The only case where it might save enough column space to allow fitting everything on one line is for MMC_NO_POWER_NOTIFICATION, but maybe that's just a sign that this #define should be made shorter somehow. Thanks! Please could you rebase against mmc-next, fix, and resend? - Chris.
On 11 October 2011 04:39, Chris Ball <cjb@laptop.org> wrote: > Hi Girish, > > On Fri, Sep 16 2011, Girish K S wrote: >> This patch adds the power off notification handling >> during suspend and system poweroff. >> For suspend mode short timeout is used, whereas for the >> normal poweroff long timeout is used. >> >> Signed-off-by: Girish K S <girish.shivananjappa@linaro.org> >> --- >> drivers/mmc/core/core.c | 34 ++++++++++++++++++++++++++++++++++ >> drivers/mmc/core/mmc.c | 5 ++++- >> drivers/mmc/host/sdhci.c | 10 ++++++++++ >> include/linux/mmc/card.h | 19 +++++++++++++++++++ >> include/linux/mmc/host.h | 4 ++++ >> 5 files changed, 71 insertions(+), 1 deletions(-) >> >> diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c >> index 91a0a74..157060f 100644 >> --- a/drivers/mmc/core/core.c >> +++ b/drivers/mmc/core/core.c >> @@ -1130,9 +1130,41 @@ static void mmc_power_up(struct mmc_host *host) >> >> static void mmc_power_off(struct mmc_host *host) >> { >> + struct mmc_card *card = host->card; >> + unsigned int notify_type; >> + unsigned int timeout; >> + int err; >> + >> host->ios.clock = 0; >> host->ios.vdd = 0; >> >> + if (card != NULL && mmc_card_mmc(card) && >> + (mmc_card_powernotify_on(card))) { >> + >> + if (host->power_notify_type == MMC_HOST_PW_NOTIFY_SHORT) { >> + notify_type = EXT_CSD_POWER_OFF_SHORT; >> + timeout = card->ext_csd.generic_cmd6_time; >> + mmc_card_set_powernotify_short(card); >> + } else { >> + notify_type = EXT_CSD_POWER_OFF_LONG; >> + timeout = card->ext_csd.power_off_longtime; >> + mmc_card_set_powernotify_long(card); >> + } >> + >> + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, >> + EXT_CSD_POWER_OFF_NOTIFICATION, >> + notify_type, timeout); >> + >> + if (err && err != -EBADMSG) >> + printk(KERN_ERR "Device failed to respond " >> + "within %d poweroff time." >> + "forcefully powering down" >> + "the device\n", timeout); > > You don't have any space between ".f" in the message. I suggest: > > pr_err("Device failed to respond within %d poweroff " > "time. Forcefully powering down the device\n", > timeout); >> + >> + /*Set the card state to no notification after the poweroff*/ > > A space between /* */. > >> + mmc_card_set_powernotify_off(card); >> + } >> + >> /* >> * Reset ocr mask to be the highest possible voltage supported for >> * this mmc host. This value will be used at next power up. >> @@ -2022,6 +2054,7 @@ int mmc_pm_notify(struct notifier_block *notify_block, >> >> spin_lock_irqsave(&host->lock, flags); >> host->rescan_disable = 1; >> + host->power_notify_type = MMC_HOST_PW_NOTIFY_SHORT; >> spin_unlock_irqrestore(&host->lock, flags); >> cancel_delayed_work_sync(&host->detect); >> >> @@ -2044,6 +2077,7 @@ int mmc_pm_notify(struct notifier_block *notify_block, >> >> spin_lock_irqsave(&host->lock, flags); >> host->rescan_disable = 0; >> + host->power_notify_type = MMC_HOST_PW_NOTIFY_LONG; >> spin_unlock_irqrestore(&host->lock, flags); >> mmc_detect_change(host, 0); >> >> diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c >> index 2f06b37..63cc77b 100644 >> --- a/drivers/mmc/core/mmc.c >> +++ b/drivers/mmc/core/mmc.c >> @@ -715,7 +715,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, >> * If the host supports the power_off_notify capability then >> * set the notification byte in the ext_csd register of device >> */ >> - if (host->caps & MMC_CAP_POWER_OFF_NOTIFY) { >> + if ((host->caps & MMC_CAP_POWER_OFF_NOTIFY) && > > The && is indented weirdly. Just use a space between ") &&". > >> + (mmc_card_powernotify_off(card))) { >> err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, >> EXT_CSD_POWER_OFF_NOTIFICATION, >> EXT_CSD_POWER_ON, >> @@ -724,6 +725,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, >> goto free_card; >> } >> >> + if (!err) >> + mmc_card_set_powernotify_on(card); > > Extra newline needed here, as there was before you added these two lines. > >> /* >> * Activate high speed (if supported) >> */ >> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c >> index 0e02cc1..92ea734 100644 >> --- a/drivers/mmc/host/sdhci.c >> +++ b/drivers/mmc/host/sdhci.c >> @@ -2566,6 +2566,16 @@ int sdhci_add_host(struct sdhci_host *host) >> if (caps[1] & SDHCI_DRIVER_TYPE_D) >> mmc->caps |= MMC_CAP_DRIVER_TYPE_D; >> >> + /* >> + * If Notify capability is enabled and >> + * notify type is not initialised by host, set default to >> + * long power off notify timeout value >> + */ >> + if (mmc->caps & MMC_CAP_POWER_OFF_NOTIFY) >> + mmc->power_notify_type = MMC_HOST_PW_NOTIFY_SHORT; >> + else >> + mmc->power_notify_type = MMC_HOST_PW_NOTIFY_NONE; >> + > > The comment says it sets the default to long power off if power_notify_type > is unset, but the code sets power_notify_type to short power off regardless > of whether power_notify_type was set. The comment and code should agree. > >> /* Initial value for re-tuning timer count */ >> host->tuning_count = (caps[1] & SDHCI_RETUNING_TIMER_COUNT_MASK) >> >> SDHCI_RETUNING_TIMER_COUNT_SHIFT; >> diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h >> index 2bf2843..1d6a832 100644 >> --- a/include/linux/mmc/card.h >> +++ b/include/linux/mmc/card.h >> @@ -190,6 +190,11 @@ struct mmc_card { >> #define MMC_QUIRK_DISABLE_CD (1<<5) /* disconnect CD/DAT[3] resistor */ >> #define MMC_QUIRK_INAND_CMD38 (1<<6) /* iNAND devices have broken CMD38 */ >> #define MMC_QUIRK_BLK_NO_CMD23 (1<<7) /* Avoid CMD23 for regular multiblock */ >> + unsigned int poweroff_notify_state;/*eMMC4.5 notify feature */ >> +#define MMC_NO_POWER_NOTIFICATION 0 >> +#define MMC_POWERED_ON 1 >> +#define MMC_POWEROFF_SHORT 2 >> +#define MMC_POWEROFF_LONG 3 >> >> unsigned int erase_size; /* erase size in sectors */ >> unsigned int erase_shift; /* if erase unit is power 2 */ >> @@ -325,6 +330,20 @@ static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data) >> #define mmc_sd_card_set_uhs(c) ((c)->state |= MMC_STATE_ULTRAHIGHSPEED) >> #define mmc_card_set_ext_capacity(c) ((c)->state |= MMC_CARD_SDXC) >> >> +#define mmc_card_powernotify_on(c) \ >> + ((c)->poweroff_notify_state == MMC_POWERED_ON) >> +#define mmc_card_powernotify_off(c) \ >> + ((c)->poweroff_notify_state == MMC_NO_POWER_NOTIFICATION) >> + >> +#define mmc_card_set_powernotify_off(c) \ >> + ((c)->poweroff_notify_state = MMC_NO_POWER_NOTIFICATION) >> +#define mmc_card_set_powernotify_on(c) \ >> + ((c)->poweroff_notify_state = MMC_POWERED_ON) >> +#define mmc_card_set_powernotify_short(c) \ >> + ((c)->poweroff_notify_state = MMC_POWEROFF_SHORT) >> +#define mmc_card_set_powernotify_long(c) \ >> + ((c)->poweroff_notify_state = MMC_POWEROFF_LONG) >> + > > I don't think these macros need to exist. You can already do the same > thing in one line of code, and it would be clearer to be modifying/testing > poweroff_notify_state directly. The only case where it might save enough > column space to allow fitting everything on one line is for > MMC_NO_POWER_NOTIFICATION, but maybe that's just a sign that this > #define should be made shorter somehow. > > Thanks! Please could you rebase against mmc-next, fix, and resend? > > - Chris. Hi Chris, This is a very old version of the patch. My latest patch has been merged with Mr Chung's branch (the one with PULL REQUEST). These comments have been already taken care. Thanks Girish K S > -- > Chris Ball <cjb@laptop.org> <http://printf.net/> > One Laptop Per Child >
Hi Girish, On Tue, Oct 11 2011, Girish K S wrote: > This is a very old version of the patch. My latest patch has been > merged with Mr Chung's branch (the one with PULL REQUEST). > These comments have been already taken care. No, that's not the case. Here is the version of the patch on the emmc4.5 branch that the pull request is for: http://git.infradead.org/users/kmpark/linux-2.6-samsung/commitdiff/dac139c9591545a40ea0058d9305514130762682 and it has the same problems I'm replying to here. Maybe the wrong version got merged? Thanks, - Chris.
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 91a0a74..157060f 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1130,9 +1130,41 @@ static void mmc_power_up(struct mmc_host *host) static void mmc_power_off(struct mmc_host *host) { + struct mmc_card *card = host->card; + unsigned int notify_type; + unsigned int timeout; + int err; + host->ios.clock = 0; host->ios.vdd = 0; + if (card != NULL && mmc_card_mmc(card) && + (mmc_card_powernotify_on(card))) { + + if (host->power_notify_type == MMC_HOST_PW_NOTIFY_SHORT) { + notify_type = EXT_CSD_POWER_OFF_SHORT; + timeout = card->ext_csd.generic_cmd6_time; + mmc_card_set_powernotify_short(card); + } else { + notify_type = EXT_CSD_POWER_OFF_LONG; + timeout = card->ext_csd.power_off_longtime; + mmc_card_set_powernotify_long(card); + } + + err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, + EXT_CSD_POWER_OFF_NOTIFICATION, + notify_type, timeout); + + if (err && err != -EBADMSG) + printk(KERN_ERR "Device failed to respond " + "within %d poweroff time." + "forcefully powering down" + "the device\n", timeout); + + /*Set the card state to no notification after the poweroff*/ + mmc_card_set_powernotify_off(card); + } + /* * Reset ocr mask to be the highest possible voltage supported for * this mmc host. This value will be used at next power up. @@ -2022,6 +2054,7 @@ int mmc_pm_notify(struct notifier_block *notify_block, spin_lock_irqsave(&host->lock, flags); host->rescan_disable = 1; + host->power_notify_type = MMC_HOST_PW_NOTIFY_SHORT; spin_unlock_irqrestore(&host->lock, flags); cancel_delayed_work_sync(&host->detect); @@ -2044,6 +2077,7 @@ int mmc_pm_notify(struct notifier_block *notify_block, spin_lock_irqsave(&host->lock, flags); host->rescan_disable = 0; + host->power_notify_type = MMC_HOST_PW_NOTIFY_LONG; spin_unlock_irqrestore(&host->lock, flags); mmc_detect_change(host, 0); diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 2f06b37..63cc77b 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -715,7 +715,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, * If the host supports the power_off_notify capability then * set the notification byte in the ext_csd register of device */ - if (host->caps & MMC_CAP_POWER_OFF_NOTIFY) { + if ((host->caps & MMC_CAP_POWER_OFF_NOTIFY) && + (mmc_card_powernotify_off(card))) { err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_POWER_OFF_NOTIFICATION, EXT_CSD_POWER_ON, @@ -724,6 +725,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr, goto free_card; } + if (!err) + mmc_card_set_powernotify_on(card); /* * Activate high speed (if supported) */ diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 0e02cc1..92ea734 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2566,6 +2566,16 @@ int sdhci_add_host(struct sdhci_host *host) if (caps[1] & SDHCI_DRIVER_TYPE_D) mmc->caps |= MMC_CAP_DRIVER_TYPE_D; + /* + * If Notify capability is enabled and + * notify type is not initialised by host, set default to + * long power off notify timeout value + */ + if (mmc->caps & MMC_CAP_POWER_OFF_NOTIFY) + mmc->power_notify_type = MMC_HOST_PW_NOTIFY_SHORT; + else + mmc->power_notify_type = MMC_HOST_PW_NOTIFY_NONE; + /* Initial value for re-tuning timer count */ host->tuning_count = (caps[1] & SDHCI_RETUNING_TIMER_COUNT_MASK) >> SDHCI_RETUNING_TIMER_COUNT_SHIFT; diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index 2bf2843..1d6a832 100644 --- a/include/linux/mmc/card.h +++ b/include/linux/mmc/card.h @@ -190,6 +190,11 @@ struct mmc_card { #define MMC_QUIRK_DISABLE_CD (1<<5) /* disconnect CD/DAT[3] resistor */ #define MMC_QUIRK_INAND_CMD38 (1<<6) /* iNAND devices have broken CMD38 */ #define MMC_QUIRK_BLK_NO_CMD23 (1<<7) /* Avoid CMD23 for regular multiblock */ + unsigned int poweroff_notify_state;/*eMMC4.5 notify feature */ +#define MMC_NO_POWER_NOTIFICATION 0 +#define MMC_POWERED_ON 1 +#define MMC_POWEROFF_SHORT 2 +#define MMC_POWEROFF_LONG 3 unsigned int erase_size; /* erase size in sectors */ unsigned int erase_shift; /* if erase unit is power 2 */ @@ -325,6 +330,20 @@ static inline void __maybe_unused remove_quirk(struct mmc_card *card, int data) #define mmc_sd_card_set_uhs(c) ((c)->state |= MMC_STATE_ULTRAHIGHSPEED) #define mmc_card_set_ext_capacity(c) ((c)->state |= MMC_CARD_SDXC) +#define mmc_card_powernotify_on(c) \ + ((c)->poweroff_notify_state == MMC_POWERED_ON) +#define mmc_card_powernotify_off(c) \ + ((c)->poweroff_notify_state == MMC_NO_POWER_NOTIFICATION) + +#define mmc_card_set_powernotify_off(c) \ + ((c)->poweroff_notify_state = MMC_NO_POWER_NOTIFICATION) +#define mmc_card_set_powernotify_on(c) \ + ((c)->poweroff_notify_state = MMC_POWERED_ON) +#define mmc_card_set_powernotify_short(c) \ + ((c)->poweroff_notify_state = MMC_POWEROFF_SHORT) +#define mmc_card_set_powernotify_long(c) \ + ((c)->poweroff_notify_state = MMC_POWEROFF_LONG) + /* * Quirk add/remove for MMC products. */ diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index cf2dadc..4f24702 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -232,6 +232,10 @@ struct mmc_host { #define MMC_CAP_POWER_OFF_NOTIFY (1 << 31)/*Notify poweroff supported */ mmc_pm_flag_t pm_caps; /* supported pm features */ + unsigned int power_notify_type; +#define MMC_HOST_PW_NOTIFY_NONE 0 +#define MMC_HOST_PW_NOTIFY_SHORT 1 +#define MMC_HOST_PW_NOTIFY_LONG 2 #ifdef CONFIG_MMC_CLKGATE int clk_requests; /* internal reference counter */
This patch adds the power off notification handling during suspend and system poweroff. For suspend mode short timeout is used, whereas for the normal poweroff long timeout is used. Signed-off-by: Girish K S <girish.shivananjappa@linaro.org> --- drivers/mmc/core/core.c | 34 ++++++++++++++++++++++++++++++++++ drivers/mmc/core/mmc.c | 5 ++++- drivers/mmc/host/sdhci.c | 10 ++++++++++ include/linux/mmc/card.h | 19 +++++++++++++++++++ include/linux/mmc/host.h | 4 ++++ 5 files changed, 71 insertions(+), 1 deletions(-)