void mmc_rescan(struct work_struct *work)
{
struct mmc_host *host =
container_of(work, struct mmc_host, detect.work);
u32 ocr;
int err;
int extend_wakelock = 0;
int ret;
unsigned long flags;
/*
* Add checking gpio pin status before initialization of bus.
* If the GPIO pin status is changed, check gpio pin status again.
* Should check until it's stable.
* [email protected], 2010-09-27
*/
if (host->ops->get_status){
ret = host->ops->get_status(host);
if (ret == 1) {
mmc_schedule_delayed_work(&host->detect, HZ / 3);
return;
}
}
spin_lock_irqsave(&host->lock, flags);
if (host->rescan_disable) {
spin_unlock_irqrestore(&host->lock, flags);
return;
}
spin_unlock_irqrestore(&host->lock, flags);
mmc_bus_get(host);
/*
* if there is a _removable_ card registered, check whether it is
* still present
*/
if (host->bus_ops && host->bus_ops->detect && !host->bus_dead
&& !(host->caps & MMC_CAP_NONREMOVABLE)) {
host->bus_ops->detect(host);
/* If the card was removed the bus will be marked
* as dead - extend the wakelock so userspace
* can respond */
if (host->bus_dead)
extend_wakelock = 1;
}
mmc_bus_put(host);
mmc_bus_get(host);
/* if there still is a card present, stop here */
if (host->bus_ops != NULL) {
mmc_bus_put(host);
goto out;
}
/* detect a newly inserted card */
/*
* Only we can add a new handler, so it's safe to
* release the lock here.
*/
mmc_bus_put(host);
if (host->ops->get_cd && host->ops->get_cd(host) == 0)
goto out;
mmc_claim_host(host);
mmc_power_up(host);
sdio_reset(host);
mmc_go_idle(host);
mmc_send_if_cond(host, host->ocr_avail);
/*
* First we search for SDIO...
*/
err = mmc_send_io_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sdio(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
/*
* ...then normal SD...
*/
err = mmc_send_app_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sd(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
/*
* ...and finally MMC.
*/
err = mmc_send_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_mmc(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
mmc_release_host(host);
mmc_power_off(host);
out:
if (extend_wakelock)
wake_lock_timeout(&mmc_delayed_work_wake_lock, HZ / 2);
else
wake_unlock(&mmc_delayed_work_wake_lock);
if (host->caps & MMC_CAP_NEEDS_POLL)
mmc_schedule_delayed_work(&host->detect, HZ);
}
void mmc_rescan(struct work_struct *work)
{
struct mmc_host *host =
container_of(work, struct mmc_host, detect.work);
u32 ocr;
int err;
unsigned int eint0msk = 0;
int ext_CD_int = 0;
ext_CD_int = readl(S3C64XX_GPNDAT);
ext_CD_int &= 0x40; /* GPN6 */
if( system_rev >= 0x20 )
ext_CD_int = !ext_CD_int;
mmc_bus_get(host);
printk("kimhyuns mmc_rescan hostindex=%d\n", host->index);
if (host->bus_ops == NULL) {
printk("kimhyuns mmc_rescan host->bus_ops == NULL \n");
/*
* Only we can add a new handler, so it's safe to
* release the lock here.
*/
mmc_bus_put(host);
if (host->ops->get_cd && host->ops->get_cd(host) == 0)
goto out;
mmc_claim_host(host);
mmc_power_up(host);
mmc_go_idle(host);
mmc_send_if_cond(host, host->ocr_avail);
/*
* First we search for SDIO...
*/
err = mmc_send_io_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sdio(host, ocr))
mmc_power_off(host);
goto out;
}
/*
* ...then normal SD...
*/
err = mmc_send_app_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sd(host, ocr))
mmc_power_off(host);
goto out;
}
/*
* ...and finally MMC.
*/
err = mmc_send_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_mmc(host, ocr))
mmc_power_off(host);
goto out;
}
mmc_release_host(host);
mmc_power_off(host);
}
else
{
printk("kimhyuns mmc_rescan else \n");
if (host->bus_ops->detect && !host->bus_dead)
host->bus_ops->detect(host);
mmc_bus_put(host);
if(host->index ==0 && g_rescan_retry)
{
ext_CD_int = readl(S3C64XX_GPNDAT);
ext_CD_int &= 0x40; /* GPN6 */
if( system_rev >= 0x20 )
ext_CD_int = !ext_CD_int;
if (!ext_CD_int)
{
mmc_detect_change(host, msecs_to_jiffies(200));
g_rescan_retry = 0;
// if(is_inited_wake_lock==1) //kimhyuns probe에서 수정함.
{
printk("kimhyuns mmc_rescan unlock 1 \n");
wake_unlock(&sdcard_scan_wake_lock);//kimhyuns_add
}
}
}
}
if (!ext_CD_int)
{
eint0msk = __raw_readl(S3C64XX_EINT0MASK);
eint0msk &= 0x0FFFFFFF & ~(1 << 6);
__raw_writel(eint0msk, S3C64XX_EINT0MASK);
}
out:
if(host->index ==0 && g_rescan_retry)
{
g_rescan_retry = 0;
// if(is_inited_wake_lock==1) //kimhyuns probe에서 수정함.
{
printk("kimhyuns mmc_rescan unlock 2 \n");
//wake_unlock(&sdcard_scan_wake_lock);//kimhyuns_add
wake_lock_timeout(&sdcard_scan_wake_lock, msecs_to_jiffies(5000)); //give some timer for the media scanner to run
}
}
if (host->caps & MMC_CAP_NEEDS_POLL)
mmc_schedule_delayed_work(&host->detect, HZ);
}
void mmc_rescan(struct work_struct *work)
{
struct mmc_host *host =
container_of(work, struct mmc_host, detect.work);
u32 ocr;
int err;
int extend_wakelock = 0;
mmc_bus_get(host);
#ifdef CONFIG_MMC_AUTO_SUSPEND
if (!mmc_auto_suspend(host, 0)) { /* i.e resumed */
mmc_bus_put(host);
goto out;
}
#endif
/* if there is a card registered, check whether it is still present */
if ((host->bus_ops != NULL) &&
host->bus_ops->detect && !host->bus_dead) {
host->bus_ops->detect(host);
/* If the card was removed the bus will be marked
* as dead - extend the wakelock so userspace
* can respond */
if (host->bus_dead)
extend_wakelock = 1;
}
mmc_bus_put(host);
mmc_bus_get(host);
/* if there still is a card present, stop here */
if (host->bus_ops != NULL) {
mmc_bus_put(host);
goto out;
}
/* detect a newly inserted card */
/*
* Only we can add a new handler, so it's safe to
* release the lock here.
*/
mmc_bus_put(host);
if (host->ops->get_cd && host->ops->get_cd(host) == 0)
goto out;
mmc_claim_host(host);
mmc_power_up(host);
mmc_go_idle(host);
mmc_send_if_cond(host, host->ocr_avail);
/*
* First we search for SDIO...
*/
err = mmc_send_io_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sdio(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
/*
* ...then normal SD...
*/
err = mmc_send_app_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sd(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
/*
* ...and finally MMC.
*/
err = mmc_send_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_mmc(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
mmc_release_host(host);
mmc_power_off(host);
out:
if (extend_wakelock)
wake_lock_timeout(&mmc_delayed_work_wake_lock, HZ / 2);
else
wake_unlock(&mmc_delayed_work_wake_lock);
if (host->caps & MMC_CAP_NEEDS_POLL)
mmc_schedule_delayed_work(&host->detect, HZ);
}
/*
* Handle the detection and initialisation of a card.
*
* In the case of a resume, "oldcard" will contain the card
* we're trying to reinitialise.
*/
static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
struct mmc_card *oldcard)
{
struct mmc_card *card;
int err;
u32 cid[4];
unsigned int max_dtr;
#ifdef CONFIG_MMC_PARANOID_SD_INIT
int retries;
#endif
BUG_ON(!host);
WARN_ON(!host->claimed);
/*
* Since we're changing the OCR value, we seem to
* need to tell some cards to go back to the idle
* state. We wait 1ms to give cards time to
* respond.
*/
mmc_go_idle(host);
/*
* If SD_SEND_IF_COND indicates an SD 2.0
* compliant card and we should set bit 30
* of the ocr to indicate that we can handle
* block-addressed SDHC cards.
*/
err = mmc_send_if_cond(host, ocr);
if (!err)
ocr |= 1 << 30;
err = mmc_send_app_op_cond(host, ocr, NULL);
if (err)
goto err;
/*
* For SPI, enable CRC as appropriate.
*/
if (mmc_host_is_spi(host)) {
err = mmc_spi_set_crc(host, use_spi_crc);
if (err)
goto err;
}
/*
* Fetch CID from card.
*/
if (mmc_host_is_spi(host))
err = mmc_send_cid(host, cid);
else
err = mmc_all_send_cid(host, cid);
if (err)
goto err;
if (oldcard) {
if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0) {
err = -ENOENT;
goto err;
}
card = oldcard;
} else {
/*
* Allocate card structure.
*/
card = mmc_alloc_card(host, &sd_type);
if (IS_ERR(card)) {
err = PTR_ERR(card);
goto err;
}
card->type = MMC_TYPE_SD;
memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
}
/*
* For native busses: get card RCA and quit open drain mode.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_send_relative_addr(host, &card->rca);
if (err)
goto free_card;
mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
}
if (!oldcard) {
/*
* Fetch CSD from card.
*/
err = mmc_send_csd(card, card->raw_csd);
if (err)
goto free_card;
err = mmc_decode_csd(card);
if (err)
goto free_card;
mmc_decode_cid(card);
}
/*
* Select card, as all following commands rely on that.
*/
if (!mmc_host_is_spi(host)) {
err = mmc_select_card(card);
if (err)
goto free_card;
}
if (!oldcard) {
/*
* Fetch SCR from card.
*/
err = mmc_app_send_scr(card, card->raw_scr);
if (err)
goto free_card;
err = mmc_decode_scr(card);
if (err < 0)
goto free_card;
/*
* Fetch switch information from card.
*/
#ifdef CONFIG_MMC_PARANOID_SD_INIT
for (retries = 1; retries <= 3; retries++) {
err = mmc_read_switch(card);
if (!err) {
if (retries > 1) {
printk(KERN_WARNING
"%s: recovered\n",
mmc_hostname(host));
}
break;
} else {
printk(KERN_WARNING
"%s: read switch failed (attempt %d)\n",
mmc_hostname(host), retries);
}
}
#else
err = mmc_read_switch(card);
#endif
if (err)
goto free_card;
}
/*
* Attempt to change to high-speed (if supported)
*/
err = mmc_switch_hs(card);
if (err)
goto free_card;
/*
* Compute bus speed.
*/
max_dtr = (unsigned int)-1;
if (mmc_card_highspeed(card)) {
if (max_dtr > card->sw_caps.hs_max_dtr)
max_dtr = card->sw_caps.hs_max_dtr;
} else if (max_dtr > card->csd.max_dtr) {
max_dtr = card->csd.max_dtr;
}
mmc_set_clock(host, max_dtr);
/*
* Switch to wider bus (if supported).
*/
if ((host->caps & MMC_CAP_4_BIT_DATA) &&
(card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) {
err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4);
if (err)
goto free_card;
mmc_set_bus_width(host, MMC_BUS_WIDTH_4);
}
/*
* Check if read-only switch is active.
*/
if (!oldcard) {
if (!host->ops->get_ro || host->ops->get_ro(host) < 0) {
printk(KERN_WARNING "%s: host does not "
"support reading read-only "
"switch. assuming write-enable.\n",
mmc_hostname(host));
} else {
if (host->ops->get_ro(host) > 0)
mmc_card_set_readonly(card);
}
}
if (!oldcard)
host->card = card;
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
return err;
}
void mmc_rescan(struct work_struct *work)
{
struct mmc_host *host =
container_of(work, struct mmc_host, detect.work);
u32 ocr;
int err;
mmc_bus_get(host);
if (host->bus_ops == NULL) {
/*
* Only we can add a new handler, so it's safe to
* release the lock here.
*/
mmc_bus_put(host);
if (host->ops->get_cd && host->ops->get_cd(host) == 0)
goto out;
mmc_claim_host(host);
mmc_power_up(host);
mmc_go_idle(host);
mmc_send_if_cond(host, host->ocr_avail);
/*
* First we search for SDIO...
*/
err = mmc_send_io_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sdio(host, ocr))
mmc_power_off(host);
goto out;
}
/*
* ...then normal SD...
*/
err = mmc_send_app_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sd(host, ocr))
mmc_power_off(host);
goto out;
}
/*
* ...and finally MMC.
*/
err = mmc_send_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_mmc(host, ocr))
mmc_power_off(host);
goto out;
}
mmc_release_host(host);
mmc_power_off(host);
} else {
if (host->bus_ops->detect && !host->bus_dead)
host->bus_ops->detect(host);
mmc_bus_put(host);
}
out:
if (host->caps & MMC_CAP_NEEDS_POLL)
mmc_schedule_delayed_work(&host->detect, HZ);
}
void mmc_rescan(struct work_struct *work)
{
struct mmc_host *host =
container_of(work, struct mmc_host, detect.work);
u32 ocr;
int err;
unsigned long flags;
int extend_wakelock = 0;
spin_lock_irqsave(&host->lock, flags);
if (host->rescan_disable) {
spin_unlock_irqrestore(&host->lock, flags);
if (atomic_dec_return(&wakelock_refs) > 0) {
printk(KERN_DEBUG "Another host want the wakelock : %d\n", atomic_read(&wakelock_refs));
}else {
printk(KERN_DEBUG "unlock case1 : mmc%d: wake_lock_timeout 0.5 sec %d\n", host->index, atomic_read(&wakelock_refs));
wake_lock_timeout(&mmc_delayed_work_wake_lock, msecs_to_jiffies(500));
}
return;
}
spin_unlock_irqrestore(&host->lock, flags);
//[NAGSM_Android_HDLNC_SDcard_shinjonghyun_20100504 : mutual exclusion when MoviNand and SD cardusing using this funtion
// mutex_lock(&host->carddetect_lock);
//]NAGSM_Android_HDLNC_SDcard_shinjonghyun_20100504 : mutual exclusion when MoviNand and SD cardusing using this funtion
mmc_bus_get(host);
/* if there is a card registered, check whether it is still present */
if ((host->bus_ops != NULL) && host->bus_ops->detect && !host->bus_dead) {
if(host->ops->get_cd && host->ops->get_cd(host) == 0) {
if(host->bus_ops->remove)
host->bus_ops->remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
else
host->bus_ops->detect(host);
}
/* If the card was removed the bus will be marked
* as dead - extend the wakelock so userspace
* can respond */
if (host->bus_dead)
extend_wakelock = 1;
mmc_bus_put(host);
mmc_bus_get(host);
printk(KERN_DEBUG "*** DEBUG : start %s (mmc%d)***\n", __func__, host->index);
/* if there still is a card present, stop here */
if (host->bus_ops != NULL) {
mmc_bus_put(host);
goto out;
}
/* detect a newly inserted card */
/*
* Only we can add a new handler, so it's safe to
* release the lock here.
*/
mmc_bus_put(host);
if (host->ops->get_cd && host->ops->get_cd(host) == 0)
goto out;
mmc_claim_host(host);
mmc_power_up(host);
sdio_reset(host);
mmc_go_idle(host);
mmc_send_if_cond(host, host->ocr_avail);
/*
* First we search for SDIO...
*/
printk(KERN_DEBUG "*** DEBUG : First we search for SDIO...(%d)***\n", host->index);
err = mmc_send_io_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sdio(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
/*
* ...then normal SD...
*/
printk(KERN_DEBUG "*** DEBUG : ...then normal SD...(%d) ***\n", host->index);
err = mmc_send_app_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sd(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
/*
* ...and finally MMC.
*/
printk(KERN_DEBUG "*** DEBUG : ...and finally MMC. (%d)***\n", host->index);
err = mmc_send_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_mmc(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
printk(KERN_DEBUG "*** DEBUG : end %s (mmc%d)***\n", __func__, host->index);
mmc_release_host(host);
mmc_power_off(host);
out:
#if 0
//if (extend_wakelock)
// wake_lock_timeout(&mmc_delayed_work_wake_lock, HZ / 2);
//else
// wake_unlock(&mmc_delayed_work_wake_lock);
#else
if (atomic_dec_return(&wakelock_refs) > 0) {
printk(KERN_DEBUG "Another host want the wakelock : %d\n", atomic_read(&wakelock_refs));
}
else {
printk(KERN_DEBUG "unlock case2 : mmc%d: wake_lock_timeout 0.5 sec %d\n", host->index, atomic_read(&wakelock_refs));
wake_lock_timeout(&mmc_delayed_work_wake_lock, msecs_to_jiffies(500));
}
#endif
if (host->caps & MMC_CAP_NEEDS_POLL)
mmc_schedule_delayed_work(&host->detect, HZ);
//[NAGSM_Android_HDLNC_SDcard_shinjonghyun_20100504 : mutual exclusion when MoviNand and SD cardusing using this funtion
// mutex_unlock(&host->carddetect_lock);
//]NAGSM_Android_HDLNC_SDcard_shinjonghyun_20100504 : mutual exclusion when MoviNand and SD cardusing using this funtion
}
/*
* Starting point for SD card init.
*/
int mmc_attach_sd(struct mmc_host *host)
{
int err;
u32 ocr;
#ifdef CONFIG_MMC_PARANOID_SD_INIT
int retries;
#endif
BUG_ON(!host);
WARN_ON(!host->claimed);
/* Make sure we are at 3.3V signalling voltage */
err = mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_330);
if (err)
return err;
err = mmc_send_app_op_cond(host, 0, &ocr);
if (err)
return err;
mmc_sd_attach_bus_ops(host);
if (host->ocr_avail_sd)
host->ocr_avail = host->ocr_avail_sd;
/*
* We need to get OCR a different way for SPI.
*/
if (mmc_host_is_spi(host)) {
mmc_go_idle(host);
err = mmc_spi_read_ocr(host, 0, &ocr);
if (err)
goto err;
}
/*
* Sanity check the voltages that the card claims to
* support.
*/
if (ocr & 0x7F) {
printk(KERN_WARNING "%s: card claims to support voltages "
"below the defined range. These will be ignored.\n",
mmc_hostname(host));
ocr &= ~0x7F;
}
if ((ocr & MMC_VDD_165_195) &&
!(host->ocr_avail_sd & MMC_VDD_165_195)) {
printk(KERN_WARNING "%s: SD card claims to support the "
"incompletely defined 'low voltage range'. This "
"will be ignored.\n", mmc_hostname(host));
ocr &= ~MMC_VDD_165_195;
}
host->ocr = mmc_select_voltage(host, ocr);
/*
* Can we support the voltage(s) of the card(s)?
*/
if (!host->ocr) {
err = -EINVAL;
goto err;
}
/*
* Detect and init the card.
*/
#ifdef CONFIG_MMC_PARANOID_SD_INIT
retries = 5;
while (retries) {
err = mmc_sd_init_card(host, host->ocr, NULL);
if (err) {
retries--;
continue;
}
break;
}
if (!retries) {
printk(KERN_ERR "%s: mmc_sd_init_card() failure (err = %d)\n",
mmc_hostname(host), err);
goto err;
}
#else
err = mmc_sd_init_card(host, host->ocr, NULL);
if (err)
goto err;
#endif
mmc_release_host(host);
err = mmc_add_card(host->card);
mmc_claim_host(host);
if (err)
goto remove_card;
return 0;
remove_card:
mmc_release_host(host);
mmc_remove_card(host->card);
host->card = NULL;
mmc_claim_host(host);
err:
mmc_detach_bus(host);
printk(KERN_ERR "%s: error %d whilst initialising SD card\n",
mmc_hostname(host), err);
return err;
}
void mmc_rescan(struct work_struct *work)
{
struct mmc_host *host =
container_of(work, struct mmc_host, detect.work);
u32 ocr;
int err=0;
unsigned long flags;
int extend_wakelock = 0;
printk("%s: %s start\n", mmc_hostname(host), __func__);
spin_lock_irqsave(&host->lock, flags);
if (host->rescan_disable) {
spin_unlock_irqrestore(&host->lock, flags);
return;
}
spin_unlock_irqrestore(&host->lock, flags);
mmc_bus_get(host);
/* if there is a card registered, check whether it is still present */
if ((host->bus_ops != NULL) && host->bus_ops->detect && !host->bus_dead)
host->bus_ops->detect(host);
/* If the card was removed the bus will be marked
* as dead - extend the wakelock so userspace
* can respond */
if (host->bus_dead)
extend_wakelock = 1;
mmc_bus_put(host);
mmc_bus_get(host);
/* if there still is a card present, stop here */
if (host->bus_ops != NULL) {
mmc_bus_put(host);
goto out;
}
/* detect a newly inserted card */
/*
* Only we can add a new handler, so it's safe to
* release the lock here.
*/
mmc_bus_put(host);
if (host->ops->get_cd && host->ops->get_cd(host) == 0)
goto out;
mmc_claim_host(host);
mmc_power_up(host);
sdio_reset(host);
mmc_go_idle(host);
mmc_send_if_cond(host, host->ocr_avail);
/*
* First we search for SDIO...
*/
err = mmc_send_io_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sdio(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
/*
* ...then normal SD...
*/
err = mmc_send_app_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sd(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
/*
* ...and finally MMC.
*/
err = mmc_send_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_mmc(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
mmc_release_host(host);
mmc_power_off(host);
out:
printk("%s: %s rescann is out\n", mmc_hostname(host), __func__);
if (extend_wakelock)
wake_lock_timeout(&mmc_delayed_work_wake_lock, HZ / 2);
else
wake_unlock(&mmc_delayed_work_wake_lock);
if (host->caps & MMC_CAP_NEEDS_POLL)
{
printk("%s : schedule host->detect(mmc_sd_detect)\n",__func__);
mmc_schedule_delayed_work(&host->detect, HZ);
}
}
void mmc_rescan(struct work_struct *work)
{
struct mmc_host *host =
container_of(work, struct mmc_host, detect.work);
u32 ocr;
int err = 0;
int extend_wakelock = 0;
#ifdef CONFIG_MMC_PARANOID_SD_INIT
int retries = 2;
#endif
mmc_bus_get(host);
/*
* if there is a _removable_ card registered, check whether it is
* still present
*/
if (host->bus_ops && host->bus_ops->detect && !host->bus_dead
&& !(host->caps & MMC_CAP_NONREMOVABLE)) {
host->bus_ops->detect(host);
/* If the card was removed the bus will be marked
* as dead - extend the wakelock so userspace
* can respond */
if (host->bus_dead)
extend_wakelock = 1;
}
mmc_bus_put(host);
mmc_bus_get(host);
/* if there still is a card present, stop here */
if (host->bus_ops != NULL) {
mmc_bus_put(host);
goto out;
}
/* detect a newly inserted card */
/*
* Only we can add a new handler, so it's safe to
* release the lock here.
*/
mmc_bus_put(host);
if (host->ops->get_cd && host->ops->get_cd(host) == 0)
goto out;
retry:
mmc_claim_host(host);
mmc_power_up(host);
mmc_go_idle(host);
mmc_send_if_cond(host, host->ocr_avail);
/*
* First we search for SDIO...
*/
err = mmc_send_io_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sdio(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
/*
* ...then normal SD...
*/
err = mmc_send_app_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sd(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
/*
* ...and finally MMC.
*/
err = mmc_send_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_mmc(host, ocr))
mmc_power_off(host);
extend_wakelock = 1;
goto out;
}
mmc_release_host(host);
mmc_power_off(host);
out:
#ifdef CONFIG_MMC_PARANOID_SD_INIT
if (err && (err != -ENOMEDIUM) && retries) {
printk(KERN_INFO "%s: Re-scan card rc = %d (retries = %d)\n",
mmc_hostname(host), err, retries);
retries--;
goto retry;
}
#endif
if (extend_wakelock)
wake_lock_timeout(&host->wakelock, 5 * HZ);
else
wake_unlock(&host->wakelock);
if (host->caps & MMC_CAP_NEEDS_POLL)
mmc_schedule_delayed_work(&host->detect, HZ);
}
void mmc_rescan(struct work_struct *work)
{
struct mmc_host *host =
container_of(work, struct mmc_host, detect.work);
u32 ocr;
int err;
unsigned long flags;
spin_lock_irqsave(&host->lock, flags);
if (host->rescan_disable) {
spin_unlock_irqrestore(&host->lock, flags);
return;
}
spin_unlock_irqrestore(&host->lock, flags);
mmc_bus_get(host);
/* if there is a card registered, check whether it is still present */
if ((host->bus_ops != NULL) && host->bus_ops->detect && !host->bus_dead)
host->bus_ops->detect(host);
mmc_bus_put(host);
mmc_bus_get(host);
/* if there still is a card present, stop here */
if (host->bus_ops != NULL) {
mmc_bus_put(host);
goto out;
}
/* detect a newly inserted card */
/*
* Only we can add a new handler, so it's safe to
* release the lock here.
*/
mmc_bus_put(host);
if (host->ops->get_cd && host->ops->get_cd(host) == 0)
goto out;
mmc_claim_host(host);
mmc_power_up(host);
sdio_reset(host);
mmc_go_idle(host);
mmc_send_if_cond(host, host->ocr_avail);
/*
* First we search for SDIO...
*/
err = mmc_send_io_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sdio(host, ocr)) {
mmc_claim_host(host);
/* try SDMEM (but not MMC) even if SDIO is broken */
if (mmc_send_app_op_cond(host, 0, &ocr))
goto out_fail;
if (mmc_attach_sd(host, ocr))
mmc_power_off(host);
}
goto out;
}
/*
* ...then normal SD...
*/
err = mmc_send_app_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_sd(host, ocr))
mmc_power_off(host);
goto out;
}
/*
* ...and finally MMC.
*/
err = mmc_send_op_cond(host, 0, &ocr);
if (!err) {
if (mmc_attach_mmc(host, ocr))
mmc_power_off(host);
goto out;
}
out_fail:
mmc_release_host(host);
mmc_power_off(host);
out:
if (host->caps & MMC_CAP_NEEDS_POLL)
mmc_schedule_delayed_work(&host->detect, HZ);
}
static void mmc_rescan(struct work_struct *work)
{
struct mmc_host *host =
container_of(work, struct mmc_host, detect.work);
u32 ocr;
int err;
if(fo_k){
fo_k = 0;
return;
}
printk(" mmc_rescan... \n");
mmc_bus_get(host);
if (host->bus_ops == NULL) {
/*
* Only we can add a new handler, so it's safe to
* release the lock here.
*/
if(pollux_gpio_getpin(SDI_CD_IO)) {
printk(" mmc_rescan 1===> no card \n");
mmc_bus_put(host);
return;
}
mmc_bus_put(host);
mmc_claim_host(host);
mmc_power_up(host);
if(pollux_gpio_getpin(SDI_CD_IO)) {
printk(" mmc_rescan 2===> no card \n");
mmc_power_off(host);
mmc_release_host(host);
return;
}
mmc_go_idle(host);
mmc_send_if_cond(host, host->ocr_avail);
err = mmc_send_app_op_cond(host, 0, &ocr);
if (err == MMC_ERR_NONE) {
if (mmc_attach_sd(host, ocr)){
printk("mmc_attach_sd_error .... \n");
mmc_power_off(host);
fo_k = 1;
}
} else {
/*
* If we fail to detect any SD cards then try
* searching for MMC cards.
*/
if(pollux_gpio_getpin(SDI_CD_IO)) {
printk(" mmc_rescan 4===> no card \n");
mmc_power_off(host);
mmc_release_host(host);
return;
}
err = mmc_send_op_cond(host, 0, &ocr);
if (err == MMC_ERR_NONE) {
if (mmc_attach_mmc(host, ocr))
mmc_power_off(host);
} else {
mmc_power_off(host);
mmc_release_host(host);
}
}
} else {
if (host->bus_ops->detect && !host->bus_dead)
host->bus_ops->detect(host);
mmc_bus_put(host);
}
}
