/*
* Card detection callback from host.
*/
static void mmc_sd_detect(struct mmc_host *host)
{
int err = 0;
#ifdef CONFIG_MMC_PARANOID_SD_INIT
int retries = 5;
#endif
DBG("[%s] s\n",__func__);
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
/*
* Just check if our card has been removed.
*/
#ifdef CONFIG_MMC_PARANOID_SD_INIT
while(retries) {
err = mmc_send_status(host->card, NULL);
if (err) {
retries--;
udelay(5);
continue;
}
break;
}
if (!retries) {
printk(KERN_ERR "%s(%s): Unable to re-detect card (%d)\n",
__func__, mmc_hostname(host), err);
}
#else
err = mmc_send_status(host->card, NULL);
#endif
mmc_release_host(host);
#ifdef CONFIG_MMC_UNSAFE_RESUME
if (err || (host->card_attath_status == card_attach_status_change)) {
host->card_attath_status = card_attach_status_unchange;
mmc_sd_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
#else
if (err) {
mmc_sd_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
#endif
DBG("[%s] e\n",__func__);
}
/*
* Resume callback from host.
*
* This function tries to determine if the same card is still present
* and, if so, restore all state to it.
*/
static void mmc_sd_resume(struct mmc_host *host)
{
int err = 0;
#ifdef CONFIG_MMC_PARANOID_SD_INIT
int retries;
#endif
BUG_ON(!host);
#ifndef CONFIG_ARCH_EMXX
BUG_ON(!host->card);
#endif
mmc_claim_host(host);
#ifdef CONFIG_ARCH_EMXX
if (host->card[0]) {
err = mmc_sd_init_card(host, host->ocr, host->card[0]);
if (err) {
mmc_sd_remove(host);
mmc_detach_bus(host);
}
}
#else
#ifdef CONFIG_MMC_PARANOID_SD_INIT
retries = 5;
while (retries) {
err = mmc_sd_init_card(host, host->ocr, host->card);
if (err) {
printk(KERN_ERR "%s: Re-init card rc = %d (retries = %d)\n",
mmc_hostname(host), err, retries);
mdelay(5);
retries--;
continue;
}
break;
}
#else
err = mmc_sd_init_card(host, host->ocr, host->card);
#endif
#endif
mmc_release_host(host);
#ifndef CONFIG_ARCH_EMXX
if (err) {
mmc_sd_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
#endif
}
/*
* Card detection callback from host.
*/
static void mmc_sd_detect(struct mmc_host *host)
{
int err = 0;
#ifdef CONFIG_MMC_PARANOID_SD_INIT
int retries = 5;
#endif
BUG_ON(!host);
#ifdef CONFIG_ARCH_EMXX
BUG_ON(!host->card[0]);
#else
BUG_ON(!host->card);
#endif
mmc_claim_host(host);
/*
* Just check if our card has been removed.
*/
#ifdef CONFIG_MMC_PARANOID_SD_INIT
while(retries) {
#ifdef CONFIG_ARCH_EMXX
err = mmc_send_status(host->card[0], NULL);
#else
err = mmc_send_status(host->card, NULL);
#endif
if (err) {
retries--;
udelay(5);
continue;
}
break;
}
if (!retries) {
printk(KERN_ERR "%s(%s): Unable to re-detect card (%d)\n",
__func__, mmc_hostname(host), err);
}
#else
#ifdef CONFIG_ARCH_EMXX
err = mmc_send_status(host->card[0], NULL);
#else
err = mmc_send_status(host->card, NULL);
#endif
#endif
mmc_release_host(host);
if (err) {
mmc_sd_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
}
/*
* When "deferred resume" fails, run another thread to stop mmcqd.
*/
static int mmc_sd_removal_thread(void *d)
{
struct mmc_host *host = d;
mmc_sd_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
return 0;
}
static void mmc_sd_err_with_deferred_resume(struct mmc_host *host)
{
if (mmc_bus_start_resume(host)) {
host->bus_resume_flags |= MMC_BUSRESUME_FAILS_RESUME;
kthread_run(mmc_sd_removal_thread, host, "mmcrd");
} else {
mmc_sd_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
}
/*
* Card detection callback from host.
*/
static int mmc_sd_detect(struct mmc_host *host)
{
int err = 0;
#ifdef CONFIG_MMC_PARANOID_SD_INIT
int retries = 5;
#endif
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
/*
* Just check if our card has been removed.
*/
#ifdef CONFIG_MMC_PARANOID_SD_INIT
if(gpio_get_value(SD_CARD_DETECT) == 1)
{
MMC_printk("%s: sd skip re-detect card", mmc_hostname(host));
err = 1;
}
else
{
while(retries) {
err = mmc_send_status(host->card, NULL);
if (err) {
retries--;
udelay(5);
continue;
}
break;
}
if (!retries) {
printk(KERN_ERR "%s(%s): Unable to re-detect card (%d)\n",
__func__, mmc_hostname(host), err);
}
}
#else
err = mmc_send_status(host->card, NULL);
#endif
mmc_release_host(host);
if (err) {
mmc_sd_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
return err;
}
/*
* Resume callback from host.
*
* This function tries to determine if the same card is still present
* and, if so, restore all state to it.
*/
static void mmc_sd_resume(struct mmc_host *host)
{
int err;
#ifdef CONFIG_MMC_PARANOID_SD_INIT
int retries;
#endif
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
#ifdef CONFIG_MMC_PARANOID_SD_INIT
retries = 5;
while (retries) {
err = mmc_sd_init_card(host, host->ocr, host->card);
if (err) {
printk(KERN_ERR "%s: Re-init card rc = %d (retries = %d)\n",
mmc_hostname(host), err, retries);
mmc_power_off(host);
mdelay(5);
mmc_power_up(host);
retries--;
continue;
}
break;
}
#else
err = mmc_sd_init_card(host, host->ocr, host->card);
#endif
mmc_release_host(host);
#ifdef CONFIG_MMC_BLOCK_DEFERRED_RESUME
if (err)
mmc_sd_err_with_deferred_resume(host);
#else
if (err) {
mmc_sd_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
#endif
}
/*
* Card detection callback from host.
*/
static void mmc_sd_detect(struct mmc_host *host)
{
int err = 0;
#ifdef CONFIG_MMC_PARANOID_SD_INIT
int retries = 5;
#endif
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
if (host->card->err_count >= ERR_TRIGGER_REINIT)
err = mmc_sd_init_card(host, host->ocr, host->card);
/*
* Just check if our card has been removed.
*/
#ifdef CONFIG_MMC_PARANOID_SD_INIT
while(retries) {
err = mmc_send_status(host->card, NULL);
if (err) {
retries--;
udelay(5);
continue;
}
break;
}
if (!retries) {
printk(KERN_ERR "%s(%s): Unable to re-detect card (%d)\n",
__func__, mmc_hostname(host), err);
}
#else
if (!err)
err = mmc_send_status(host->card, NULL);
#endif
mmc_release_host(host);
if (err) {
mmc_sd_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
}
/*
* Card detection callback from host.
*/
static void mmc_sd_detect(struct mmc_host *host)
{
int err = 0;
#ifdef CONFIG_MMC_PARANOID_SD_INIT
int retries = 5;
#endif
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
/*
* Just check if our card has been removed.
*/
#ifdef CONFIG_MMC_PARANOID_SD_INIT
while(retries) {
err = mmc_send_status(host->card, NULL);
if (err) {
retries--;
udelay(5);
continue;
}
break;
}
if (!retries) {
printk(KERN_ERR "%s(%s): Unable to re-detect card (%d)\n",
__func__, mmc_hostname(host), err);
}
#else
err = mmc_send_status(host->card, NULL);
#endif
mmc_release_host(host);
/* On Gen7, there is no error returned when the card is not inserted,
so we also need to check the GPIO to know if the card is here
or not. (FIXME : Find why there is no error instead) */
if (err || (host->ops->get_cd && host->ops->get_cd(host) == 0)) {
mmc_sd_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
}
/*
* Card detection callback from host.
*/
static void mmc_sd_detect(struct mmc_host *host)
{
int err;
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
/*
* Just check if our card has been removed.
*/
err = mmc_send_status(host->card, NULL);
mmc_release_host(host);
if (err) {
mmc_sd_remove(host);
mmc_claim_host(host);
mmc_detach_bus(host);
mmc_release_host(host);
}
}
