/**
* mmc_resume_host - resume a previously suspended host
* @host: mmc host
*/
int mmc_resume_host(struct mmc_host *host)
{
int err = 0;
mmc_bus_get(host);
if (mmc_bus_manual_resume(host)) {
host->bus_resume_flags |= MMC_BUSRESUME_NEEDS_RESUME;
mmc_bus_put(host);
return 0;
}
if (host->bus_ops && !host->bus_dead) {
if (!(host->pm_flags & MMC_PM_KEEP_POWER)) {
mmc_power_up(host);
mmc_select_voltage(host, host->ocr);
}
BUG_ON(!host->bus_ops->resume);
err = host->bus_ops->resume(host);
if (err) {
printk(KERN_WARNING "%s: error %d during resume "
"(card was removed?)\n",
mmc_hostname(host), err);
err = 0;
}
}
mmc_bus_put(host);
return err;
}
/* Do the card removal on suspend if card is assumed removeable
* Do that in pm notifier while userspace isn't yet frozen, so we will be able
to sync the card.
*/
int mmc_pm_notify(struct notifier_block *notify_block,
unsigned long mode, void *unused)
{
struct mmc_host *host = container_of(
notify_block, struct mmc_host, pm_notify);
unsigned long flags;
switch (mode) {
case PM_HIBERNATION_PREPARE:
case PM_SUSPEND_PREPARE:
// work around for WiFi issue
if (__mmc_is_claimed(host)) {
dev_err(&host->class_dev, "Failed to claim host %d in %lu, aborting suspend", host->index, mode);
return NOTIFY_BAD;
}
spin_lock_irqsave(&host->lock, flags);
if (mmc_bus_needs_resume(host)) {
spin_unlock_irqrestore(&host->lock, flags);
break;
}
host->rescan_disable = 1;
spin_unlock_irqrestore(&host->lock, flags);
cancel_delayed_work_sync(&host->detect);
if (!host->bus_ops || host->bus_ops->suspend)
break;
mmc_claim_host(host);
if (host->bus_ops->remove)
host->bus_ops->remove(host);
mmc_detach_bus(host);
mmc_release_host(host);
host->pm_flags = 0;
break;
case PM_POST_SUSPEND:
case PM_POST_HIBERNATION:
spin_lock_irqsave(&host->lock, flags);
if (mmc_bus_manual_resume(host)) {
spin_unlock_irqrestore(&host->lock, flags);
break;
}
host->rescan_disable = 0;
spin_unlock_irqrestore(&host->lock, flags);
mmc_detect_change(host, 0);
}
return 0;
}
/* Do the card removal on suspend if card is assumed removeable
* Do that in pm notifier while userspace isn't yet frozen, so we will be able
to sync the card.
*/
int mmc_pm_notify(struct notifier_block *notify_block,
unsigned long mode, void *unused)
{
struct mmc_host *host = container_of(
notify_block, struct mmc_host, pm_notify);
unsigned long flags;
switch (mode) {
case PM_HIBERNATION_PREPARE:
case PM_SUSPEND_PREPARE:
spin_lock_irqsave(&host->lock, flags);
if (mmc_bus_needs_resume(host)) {
spin_unlock_irqrestore(&host->lock, flags);
break;
}
host->rescan_disable = 1;
spin_unlock_irqrestore(&host->lock, flags);
cancel_delayed_work_sync(&host->detect);
if (!host->bus_ops || host->bus_ops->suspend)
break;
mmc_claim_host(host);
if (host->bus_ops->remove)
host->bus_ops->remove(host);
mmc_detach_bus(host);
mmc_power_off(host);
mmc_release_host(host);
host->pm_flags = 0;
break;
case PM_POST_SUSPEND:
case PM_POST_HIBERNATION:
spin_lock_irqsave(&host->lock, flags);
if (mmc_bus_manual_resume(host)) {
spin_unlock_irqrestore(&host->lock, flags);
break;
}
host->rescan_disable = 0;
spin_unlock_irqrestore(&host->lock, flags);
if (!host->card || host->card->type
!= MMC_TYPE_SDIO)
/*skip mmc_detect_change for sdio*/
mmc_detect_change(host, 0);
}
return 0;
}
/* Do the card removal on suspend if card is assumed removeable
* Do that in pm notifier while userspace isn't yet frozen, so we will be able
* to sync the card.
*/
int mmc_pm_notify(struct notifier_block *notify_block,
unsigned long mode, void *unused)
{
struct mmc_host *host = container_of(
notify_block, struct mmc_host, pm_notify);
unsigned long flags;
switch (mode) {
case PM_HIBERNATION_PREPARE:
case PM_SUSPEND_PREPARE:
spin_lock_irqsave(&host->lock, flags);
if (mmc_bus_needs_resume(host)) {
spin_unlock_irqrestore(&host->lock, flags);
break;
}
host->rescan_disable = 1;
spin_unlock_irqrestore(&host->lock, flags);
cancel_delayed_work_sync(&host->detect);
if (!host->bus_ops || host->bus_ops->suspend)
break;
if (host->bus_ops->remove)
host->bus_ops->remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
break;
case PM_POST_SUSPEND:
case PM_POST_HIBERNATION:
case PM_POST_RESTORE:
spin_lock_irqsave(&host->lock, flags);
if (mmc_bus_manual_resume(host)) {
spin_unlock_irqrestore(&host->lock, flags);
break;
}
host->rescan_disable = 0;
spin_unlock_irqrestore(&host->lock, flags);
#ifdef BROADCOM_WIFI // for broadcomm wifi
if (host->card && host->index == 2) // for broadcomm wifi
printk("CORE : mmc_pm_notify WLAN SKIP DETECT CHANGE\n");
else
#endif
mmc_detect_change(host, 0);
}
return 0;
}
/**
* mmc_resume_host - resume a previously suspended host
* @host: mmc host
*/
int mmc_resume_host(struct mmc_host *host)
{
int err = 0;
mmc_bus_get(host);
if (mmc_bus_manual_resume(host)) {
host->bus_resume_flags |= MMC_BUSRESUME_NEEDS_RESUME;
mmc_bus_put(host);
return 0;
}
if (host->bus_ops && !host->bus_dead) {
#ifdef CONFIG_ATH_WIFI
if (!host->suspend_keep_power) {
#endif
mmc_power_up(host);
mmc_select_voltage(host, host->ocr);
#ifdef CONFIG_ATH_WIFI
}
#endif
BUG_ON(!host->bus_ops->resume);
err = host->bus_ops->resume(host);
if (err) {
printk(KERN_WARNING "%s: error %d during resume "
"(card was removed?)\n",
mmc_hostname(host), err);
err = 0;
}
}
mmc_bus_put(host);
#if defined(CONFIG_ATH_WIFI) || defined(CONFIG_BCM_WIFI)
if (host->index == ATH_WIFI_SDCC_INDEX) {
pr_info("%s: mmc_resume_host in wifi slot skip cmd7\n", mmc_hostname(host));
return err;
}
#endif
/*
* We add a slight delay here so that resume can progress
* in parallel.
*/
mmc_detect_change(host, 1);
return err;
}
/**
* mmc_resume_host - resume a previously suspended host
* @host: mmc host
*/
int mmc_resume_host(struct mmc_host *host)
{
int err = 0;
mmc_bus_get(host);
if (mmc_bus_manual_resume(host)) {
host->bus_resume_flags |= MMC_BUSRESUME_NEEDS_RESUME;
mmc_bus_put(host);
return 0;
}
if (host->bus_ops && !host->bus_dead) {
if (!mmc_card_keep_power(host)) {
mmc_power_up(host);
mmc_select_voltage(host, host->ocr);
/*
* Tell runtime PM core we just powered up the card,
* since it still believes the card is powered off.
* Note that currently runtime PM is only enabled
* for SDIO cards that are MMC_CAP_POWER_OFF_CARD
*/
if (mmc_card_sdio(host->card) &&
(host->caps & MMC_CAP_POWER_OFF_CARD)) {
pm_runtime_disable(&host->card->dev);
pm_runtime_set_active(&host->card->dev);
pm_runtime_enable(&host->card->dev);
}
}
BUG_ON(!host->bus_ops->resume);
err = host->bus_ops->resume(host);
if (err) {
printk(KERN_WARNING "%s: error %d during resume "
"(card was removed?)\n",
mmc_hostname(host), err);
err = 0;
}
}
/* clear flag */
host->pm_flags &= ~MMC_PM_KEEP_POWER;
mmc_bus_put(host);
return err;
}
/**
* mmc_resume_host - resume a previously suspended host
* @host: mmc host
*/
int mmc_resume_host(struct mmc_host *host)
{
int err = 0;
mmc_bus_get(host);
if (mmc_bus_manual_resume(host)) {
host->bus_resume_flags |= MMC_BUSRESUME_NEEDS_RESUME;
mmc_bus_put(host);
return 0;
}
if (host->bus_ops && !host->bus_dead) {
if (!(host->pm_flags & MMC_PM_KEEP_POWER)) {
mmc_power_up(host);
mmc_select_voltage(host, host->ocr);
}
BUG_ON(!host->bus_ops->resume);
err = host->bus_ops->resume(host);
if (err) {
printk(KERN_WARNING "%s: error %d during resume "
"(card was removed?)\n",
mmc_hostname(host), err);
#if 0
if (host->bus_ops->remove)
host->bus_ops->remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
/* no need to bother upper layers */
#endif
err = 0;
}
}
mmc_bus_put(host);
/*
* We add a slight delay here so that resume can progress
* in parallel.
*/
if (!(host->pm_flags & MMC_PM_KEEP_POWER))
mmc_detect_change(host, 1);
return err;
}
/**
* mmc_resume_host - resume a previously suspended host
* @host: mmc host
*/
int mmc_resume_host(struct mmc_host *host)
{
int err = 0;
mmc_bus_get(host);
if (mmc_bus_manual_resume(host)) {
host->bus_resume_flags |= MMC_BUSRESUME_NEEDS_RESUME;
mmc_bus_put(host);
return 0;
}
if (host->bus_ops && !host->bus_dead) {
if (!(host->pm_flags & MMC_PM_KEEP_POWER)) {
mmc_power_up(host);
mmc_select_voltage(host, host->ocr);
}
BUG_ON(!host->bus_ops->resume);
err = host->bus_ops->resume(host);
if (err) {
printk(KERN_WARNING "%s: error %d during resume "
"(card was removed?)\n",
mmc_hostname(host), err);
err = 0;
}
}
mmc_bus_put(host);
/*
* We add a slight delay here so that resume can progress
* in parallel.
*/
#if 1 /* ATHENV */
if (!host->card || host->card->type != MMC_TYPE_SDIO)
#endif /* ATHENV */
#if 1//PMMC
;
#else//ORG
mmc_detect_change(host, 2);
#endif//PMMC
return err;
}
/**
* mmc_suspend_host - suspend a host
* @host: mmc host
*/
int mmc_suspend_host(struct mmc_host *host)
{
int err = 0;
if (mmc_bus_needs_resume(host))
return 0;
if (host->caps & MMC_CAP_DISABLE)
cancel_delayed_work(&host->disable);
cancel_delayed_work(&host->detect);
mmc_flush_scheduled_work();
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
if (host->bus_ops->suspend)
err = host->bus_ops->suspend(host);
if (err == -ENOSYS || !host->bus_ops->resume) {
/*
* We simply "remove" the card in this case.
* It will be redetected on resume.
*/
if (host->bus_ops->remove)
host->bus_ops->remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
host->pm_flags = 0;
err = 0;
}
}
#ifdef CONFIG_PM_RUNTIME
if (mmc_bus_manual_resume(host))
host->bus_resume_flags |= MMC_BUSRESUME_NEEDS_RESUME;
#endif
mmc_bus_put(host);
if (!err && !(host->pm_flags & MMC_PM_KEEP_POWER))
mmc_power_off(host);
return err;
}
int mmc_resume_host(struct mmc_host *host)
{
int err = 0;
mmc_bus_get(host);
if (mmc_bus_manual_resume(host)) {
host->bus_resume_flags |= MMC_BUSRESUME_NEEDS_RESUME;
mmc_bus_put(host);
return 0;
}
if (host->bus_ops && !host->bus_dead) {
if (!(host->pm_flags & MMC_PM_KEEP_POWER))
{
mmc_power_up(host);
mmc_select_voltage(host, host->ocr);
}
BUG_ON(!host->bus_ops->resume);
err = host->bus_ops->resume(host);
if (err) {
printk(KERN_WARNING "%s: error %d during resume "
"(card was removed?)\n",
mmc_hostname(host), err);
err = 0;
}
}
if(!strncmp(mmc_hostname(host),"mmc1",4))
{
memcpy(&host->ios,&ios_backup,sizeof(struct mmc_ios));
mmc_set_ios(host);
printk("\n(IOS restore)\n%s: clock %uHz busmode %u powermode %u cs %u Vdd %u width %u timing %u\n",mmc_hostname(host), ios_backup.clock, ios_backup.bus_mode,ios_backup.power_mode, ios_backup.chip_select, ios_backup.vdd,ios_backup.bus_width, ios_backup.timing);
}
mmc_bus_put(host);
return err;
}
/**
* mmc_resume_host - resume a previously suspended host
* @host: mmc host
*/
int mmc_resume_host(struct mmc_host *host)
{
int err = 0;
mmc_bus_get(host);
if (mmc_bus_manual_resume(host)) {
host->bus_resume_flags |= MMC_BUSRESUME_NEEDS_RESUME;
mmc_bus_put(host);
return 0;
}
if (host->bus_ops && !host->bus_dead) {
if (!(host->pm_flags & MMC_PM_KEEP_POWER)) {
mmc_power_up(host);
mmc_select_voltage(host, host->ocr);
}
BUG_ON(!host->bus_ops->resume);
err = host->bus_ops->resume(host);
if (err) {
struct mmc_ios *ios = &host->ios;
//temporary debug code
pr_debug("%s: clock %uHz busmode %u powermode %u cs %u Vdd %u "
"width %u timing %u\n",
mmc_hostname(host), ios->clock, ios->bus_mode,
ios->power_mode, ios->chip_select, ios->vdd,
ios->bus_width, ios->timing);
printk(KERN_WARNING "%s: error %d during resume "
"(card was removed?)\n",
mmc_hostname(host), err);
err = 0;
}
}
mmc_bus_put(host);
return err;
}
/**
* mmc_suspend_host - suspend a host
* @host: mmc host
*/
int mmc_suspend_host(struct mmc_host *host)
{
int err = 0;
if (mmc_bus_needs_resume(host))
return 0;
if (host->caps & MMC_CAP_DISABLE)
cancel_delayed_work(&host->disable);
cancel_delayed_work(&host->detect);
mmc_flush_scheduled_work();
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
/*
* A long response time is not acceptable for device drivers
* when doing suspend. Prevent mmc_claim_host in the suspend
* sequence, to potentially wait "forever" by trying to
* pre-claim the host.
*
* Skip try claim host for SDIO cards, doing so fixes deadlock
* conditions. The function driver suspend may again call into
* SDIO driver within a different context for enabling power
* save mode in the card and hence wait in mmc_claim_host
* causing deadlock.
*/
if (!(host->card && mmc_card_sdio(host->card)))
if (!mmc_try_claim_host(host))
err = -EBUSY;
if (!err) {
if (host->bus_ops->suspend)
err = host->bus_ops->suspend(host);
if (!(host->card && mmc_card_sdio(host->card)))
mmc_do_release_host(host);
if (err == -ENOSYS || !host->bus_ops->resume) {
/*
* We simply "remove" the card in this case.
* It will be redetected on resume.
*/
if (host->bus_ops->remove)
host->bus_ops->remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_power_off(host);
mmc_release_host(host);
host->pm_flags = 0;
err = 0;
}
}
}
#ifdef CONFIG_PM_RUNTIME
if (mmc_bus_manual_resume(host))
host->bus_resume_flags |= MMC_BUSRESUME_NEEDS_RESUME;
#endif
mmc_bus_put(host);
if (!err && !(host->pm_flags & MMC_PM_KEEP_POWER))
mmc_power_off(host);
return err;
}
/* Do the card removal on suspend if card is assumed removeable
* Do that in pm notifier while userspace isn't yet frozen, so we will be able
* to sync the card.
*/
int mmc_pm_notify(struct notifier_block *notify_block,
unsigned long mode, void *unused)
{
struct mmc_host *host = container_of(
notify_block, struct mmc_host, pm_notify);
unsigned long flags;
switch (mode) {
case PM_HIBERNATION_PREPARE:
case PM_SUSPEND_PREPARE:
spin_lock_irqsave(&host->lock, flags);
if (mmc_bus_needs_resume(host)) {
spin_unlock_irqrestore(&host->lock, flags);
break;
}
host->rescan_disable = 1;
spin_unlock_irqrestore(&host->lock, flags);
cancel_delayed_work_sync(&host->detect);
if (!host->bus_ops || host->bus_ops->suspend)
break;
if (host->bus_ops->remove)
host->bus_ops->remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
break;
case PM_POST_SUSPEND:
case PM_POST_HIBERNATION:
spin_lock_irqsave(&host->lock, flags);
if (mmc_bus_manual_resume(host)) {
spin_unlock_irqrestore(&host->lock, flags);
break;
}
host->rescan_disable = 0;
spin_unlock_irqrestore(&host->lock, flags);
#if defined(CONFIG_MACH_ACER_A4) || defined(CONFIG_MACH_ACER_A5)
printk("*** %s: trigger polling\n", __func__);
if (host && host->card && host->card->cis.vendor == ATHR_MANUF_CODE) {
printk("*** %s: WIFI slot. Skip detect.\n", __func__);
return 0;
}
#endif
#if defined(CONFIG_MACH_ACER_A4)
if (host && !strcmp(mmc_hostname(host), "mmc1")) {
pr_info("*** %s: mmc1. Skip detect.\n", __func__);
return 0;
}
#endif
#if defined(CONFIG_MACH_ACER_A5)
if (host && !strcmp(mmc_hostname(host), "mmc0")) {
pr_info("*** %s: mmc0 slot. Skip detect.\n", __func__);
return 0;
}
if (host && !strcmp(mmc_hostname(host), "mmc2")) {
pr_info("*** %s: mmc2 slot. Skip detect.\n", __func__);
return 0;
}
#endif
mmc_detect_change(host, 0);
}
return 0;
}
/**
* mmc_resume_host - resume a previously suspended host
* @host: mmc host
*/
int mmc_resume_host(struct mmc_host *host)
{
int err = 0;
mmc_bus_get(host);
if (mmc_bus_manual_resume(host)) {
host->bus_resume_flags |= MMC_BUSRESUME_NEEDS_RESUME;
mmc_bus_put(host);
return 0;
}
if (host->bus_ops && !host->bus_dead) {
if (!(host->pm_flags & MMC_PM_KEEP_POWER)) {
mmc_power_up(host);
mmc_select_voltage(host, host->ocr);
}
BUG_ON(!host->bus_ops->resume);
err = host->bus_ops->resume(host);
if (err) {
printk(KERN_WARNING "%s: error %d during resume "
"(card was removed?)\n",
mmc_hostname(host), err);
#if defined(CONFIG_MACH_ACER_A4) || defined(CONFIG_MACH_ACER_A5)
if (host->bus_ops->remove)
host->bus_ops->remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
/* no need to bother upper layers */
#endif
err = 0;
}
}
mmc_bus_put(host);
#if defined(CONFIG_MACH_ACER_A4) || defined(CONFIG_MACH_ACER_A5)
/* ATHENV */
if (host && host->card) {
struct mmc_card *card = host->card;
if (card->cis.vendor == ATHR_MANUF_CODE) {
/* WIFI doesn't need to detect again. */
return 0;
}
}
/* ATHENV */
#endif
#if defined(CONFIG_MACH_ACER_A4)
if (host && !strcmp(mmc_hostname(host), "mmc1")) {
pr_info("*** %s: mmc1. Skip detect.\n", __func__);
return 0;
}
#endif
#if defined(CONFIG_MACH_ACER_A5)
if (host && !strcmp(mmc_hostname(host), "mmc0")) {
pr_info("*** %s: mmc0. Skip detect.\n", __func__);
return 0;
}
if (host && !strcmp(mmc_hostname(host), "mmc2")) {
pr_info("*** %s: mmc2. Skip detect.\n", __func__);
return 0;
}
#endif
return err;
}
