/**
* mmc_suspend_host - suspend a host
* @host: mmc host
* @state: suspend mode (PM_SUSPEND_xxx)
*/
int mmc_suspend_host(struct mmc_host *host, pm_message_t state)
{
int err = 0;
if (mmc_bus_needs_resume(host))
return 0;
if (host->caps & MMC_CAP_DISABLE)
cancel_delayed_work(&host->disable);
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
if (host->bus_ops->suspend)
err = host->bus_ops->suspend(host);
}
mmc_bus_put(host);
if (!err && !(host->pm_flags & MMC_PM_KEEP_POWER))
mmc_power_off(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);
if (unlikely(cancel_delayed_work(&host->detect))) {
atomic_dec(&wakelock_refs);
}
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;
}
}
mmc_bus_put(host);
if (!err && !(host->pm_flags & MMC_PM_KEEP_POWER))
mmc_power_off(host);
return err;
}
int mmc_resume_bus(struct mmc_host *host)
{
unsigned long flags;
int err = 0;
if (!mmc_bus_needs_resume(host))
return -EINVAL;
printk("%s: Starting deferred resume\n", mmc_hostname(host));
spin_lock_irqsave(&host->lock, flags);
host->bus_resume_flags &= ~MMC_BUSRESUME_NEEDS_RESUME;
host->rescan_disable = 0;
spin_unlock_irqrestore(&host->lock, flags);
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
mmc_power_up(host);
BUG_ON(!host->bus_ops->resume);
err = host->bus_ops->resume(host);
}
#ifdef CONFIG_MACH_P1
if (!err) {
#endif /* CONFIG_MACH_P1 */
if (host->bus_ops->detect && !host->bus_dead)
host->bus_ops->detect(host);
#ifdef CONFIG_MACH_P1
} else {
printk(KERN_WARNING "%s: error %d during resume "
"(card was removed?)\n",
mmc_hostname(host), err);
}
#endif /* CONFIG_MACH_P1 */
mmc_bus_put(host);
printk("%s: Deferred resume completed\n", mmc_hostname(host));
return err;
}
int mmc_resume_bus(struct mmc_host *host)
{
if (!mmc_bus_needs_resume(host))
return -EINVAL;
printk("%s: Starting deferred resume\n", mmc_hostname(host));
host->bus_resume_flags &= ~MMC_BUSRESUME_NEEDS_RESUME;
mmc_bus_get(host);
if (host->bus_ops) {
if (!host->bus_dead) {
mmc_power_up(host);
BUG_ON(!host->bus_ops->resume);
host->bus_ops->resume(host);
}
if (host->bus_ops->detect && !host->bus_dead)
host->bus_ops->detect(host);
}
mmc_bus_put(host);
printk("%s: Deferred resume completed\n", mmc_hostname(host));
return 0;
}
/**
* mmc_suspend_host - suspend a host
* @host: mmc host
* @state: suspend mode (PM_SUSPEND_xxx)
*/
int mmc_suspend_host(struct mmc_host *host, pm_message_t state)
{
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);
err = 0;
}
}
mmc_bus_put(host);
mmc_flush_scheduled_work();
if (!err)
mmc_power_off(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) {
if (host->bus_ops->suspend)
err = host->bus_ops->suspend(host);
}
mmc_bus_put(host);
#ifndef CONFIG_WILINK_NLCP
if (!err && !(host->pm_flags & MMC_PM_KEEP_POWER))
#else
if (!err && !mmc_card_keep_power(host))
#endif
{
if(suspend_debug)
printk("P off mmc \n");
mmc_power_off(host);
}
if(host->nesting_cnt < 0) // Mahesh non line fetch patch
host->nesting_cnt = 0;
return err;
}
/**
* mmc_suspend_host - suspend a host
* @host: mmc host
* @state: suspend mode (PM_SUSPEND_xxx)
*/
int mmc_suspend_host(struct mmc_host *host, pm_message_t state)
{
int err = 0;
if (mmc_bus_needs_resume(host))
return 0;
//B: Robert, 20101006, KB62_CR766 : Fix unexpectedly remove SD card issue
cancel_delayed_work(&host->detect);
mmc_flush_scheduled_work();
//E: Robert, 20101006, KB62_CR766
if (host->caps & MMC_CAP_DISABLE)
cancel_delayed_work(&host->disable);
mmc_bus_get(host);
if (host->bus_ops && !host->bus_dead) {
if (host->bus_ops->suspend)
err = host->bus_ops->suspend(host);
//B: Robert, 20101006, KB62_CR766 : Fix unexpectedly remove SD card issue
if (!host->bus_ops->resume) {
if (host->bus_ops->remove)
host->bus_ops->remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
//E: Robert, 20101006, KB62_CR766
}
mmc_bus_put(host);
if (!err)
mmc_power_off(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;
}
