/*
* Suspend callback from host.
*/
static int mmc_suspend(struct mmc_host *host)
{
int err = 0;
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
if (host->card->cid.manfid == 0x15) {
if (!mmc_host_is_spi(host))
mmc_deselect_cards(host);
} else {
/* for successful resuming for iNAND (manfid:0x45) */
if(!strcmp(mmc_hostname(host),"mmc0") && host->card->cid.manfid == 0x45)
mmc_switch(host->card, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_1, 0);
if (mmc_card_can_sleep(host))
err = mmc_card_sleep(host);
else if (!mmc_host_is_spi(host))
mmc_deselect_cards(host);
}
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_release_host(host);
return err;
}
/*
* Suspend callback from host.
*/
static int mmc_suspend(struct mmc_host *host)
{
#if 1 // fixed high sleep current
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
if (!mmc_host_is_spi(host))
mmc_deselect_cards(host);
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_release_host(host);
return 0;
#else
int err = 0;
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
if (mmc_card_can_sleep(host))
err = mmc_card_sleep(host);
else if (!mmc_host_is_spi(host))
mmc_deselect_cards(host);
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_release_host(host);
return err;
#endif
}
/*
* Suspend callback from host.
*/
static int mmc_suspend(struct mmc_host *host)
{
// 20110922 [email protected] SAMSUNG EMMC sleep current
#if 1
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
if (!mmc_host_is_spi(host))
mmc_deselect_cards(host);
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_release_host(host);
return 0;
#else
int err = 0;
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
if (mmc_card_can_sleep(host))
err = mmc_card_sleep(host);
else if (!mmc_host_is_spi(host))
mmc_deselect_cards(host);
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_release_host(host);
return err;
#endif
}
/*
* Suspend callback from host.
*/
static int mmc_suspend(struct mmc_host *host)
{
int err = 0;
BUG_ON(!host);
BUG_ON(!host->card);
//pr_info("%s: @%s", mmc_hostname(host), __func__);//add by yansen 20120607 for mmc0: CMD5: Request timeout
mmc_claim_host(host);
//modify by yansen 20120605
//三星的MCP遇到过CMD5不响应或者mmc0: CMD5: Request timeout。
//去除sle_awake指令CMD5，由MCP自身进出POW_SAVE模式
#ifndef CONFIG_OPPO_MODIFY
if (mmc_card_can_sleep(host))
err = mmc_card_sleep(host);
else if (!mmc_host_is_spi(host))
#else
if (!mmc_host_is_spi(host))
#endif
mmc_deselect_cards(host);
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_release_host(host);
return err;
}
/*
* Suspend callback from host.
*/
static int mmc_suspend(struct mmc_host *host)
{
int err = 0;
#ifdef CONFIG_HUAWEI_KERNEL
struct mmc_cid card_cid;
#endif
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
/* we set the bus width to 1 bit of sandisk EMMC before suspend
* this is a workaroud method to avoid CMD2 CRC errors
* when be waken up from suspend, and this code
* should be changed after confirmed with sandisk.
*/
#ifdef CONFIG_HUAWEI_KERNEL
card_cid=host->card->cid;
if(HUAWEI_SANDISK_MID==card_cid.manfid)
{
printk("Setting the bus width to 1 bit before sleep \n");
mmc_switch(host->card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_1);
}
#endif
if (mmc_card_can_sleep(host))
err = mmc_card_sleep(host);
else if (!mmc_host_is_spi(host))
mmc_deselect_cards(host);
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_release_host(host);
return err;
}
/*
* Suspend callback from host.
*/
static int mmc_suspend(struct mmc_host *host)
{
int err = 0;
BUG_ON(!host);
BUG_ON(!host->card);
if (mmc_card_can_sleep(host))
err = mmc_card_sleep(host);
else if (!mmc_host_is_spi(host))
mmc_deselect_cards(host);
host->card->state &= ~MMC_STATE_HIGHSPEED;
return err;
}
/*
* Suspend callback from host.
*/
static int mmc_suspend(struct mmc_host *host)
{
int err;
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
if (mmc_card_can_sleep(host)) {
err = mmc_card_sleep(host);
if (!err)
mmc_card_set_sleep(host->card);
} else if (!mmc_host_is_spi(host))
mmc_deselect_cards(host);
host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200);
mmc_release_host(host);
return 0;
}
/*
* Suspend callback from host.
*/
static int mmc_suspend(struct mmc_host *host)
{
int err = 0;
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
if (host->bkops_started) {
host->bkops_trigger = 0;
} else {
if (mmc_card_can_sleep(host))
err = mmc_card_sleep(host);
else if (!mmc_host_is_spi(host))
mmc_deselect_cards(host);
host->card->state &= ~MMC_STATE_HIGHSPEED;
}
mmc_release_host(host);
return err;
}
/* Handler for [DISABLED -> REGSLEEP / CARDSLEEP] transition */
static int omap_hsmmc_disabled_to_sleep(struct omap_hsmmc_host *host)
{
int err, new_state;
if (!mmc_try_claim_host(host->mmc))
return 0;
clk_enable(host->fclk);
omap_hsmmc_context_restore(host);
if (mmc_card_can_sleep(host->mmc)) {
err = mmc_card_sleep(host->mmc);
if (err < 0) {
clk_disable(host->fclk);
mmc_release_host(host->mmc);
return err;
}
new_state = CARDSLEEP;
} else {
new_state = REGSLEEP;
}
if (mmc_slot(host).set_sleep)
mmc_slot(host).set_sleep(host->dev, host->slot_id, 1, 0,
new_state == CARDSLEEP);
/* FIXME: turn off bus power and perhaps interrupts too */
clk_disable(host->fclk);
host->dpm_state = new_state;
mmc_release_host(host->mmc);
dev_dbg(mmc_dev(host->mmc), "DISABLED -> %s\n",
host->dpm_state == CARDSLEEP ? "CARDSLEEP" : "REGSLEEP");
if ((host->mmc->caps & MMC_CAP_NONREMOVABLE) ||
mmc_slot(host).card_detect ||
(mmc_slot(host).get_cover_state &&
mmc_slot(host).get_cover_state(host->dev, host->slot_id)))
return msecs_to_jiffies(OMAP_MMC_OFF_TIMEOUT);
return 0;
}
/* Handler for [SLEEP -> ENABLED] transition */
static int omap_hsmmc_sleep_to_enabled(struct omap_hsmmc_host *host)
{
if (!mmc_try_claim_host(host->mmc))
return 0;
clk_enable(host->fclk);
omap_hsmmc_context_restore(host);
if (mmc_slot(host).set_sleep)
mmc_slot(host).set_sleep(host->dev, host->slot_id, 0,
host->vdd, host->dpm_state == CARDSLEEP);
if (mmc_card_can_sleep(host->mmc))
mmc_card_awake(host->mmc);
dev_dbg(mmc_dev(host->mmc), "%s -> ENABLED\n",
host->dpm_state == CARDSLEEP ? "CARDSLEEP" : "REGSLEEP");
host->dpm_state = ENABLED;
mmc_release_host(host->mmc);
return 0;
}
/*
* Suspend callback from host.
*/
static int mmc_suspend(struct mmc_host *host)
{
int err = 0;
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
if (host->card->cid.manfid == 0x15) {
if (!mmc_host_is_spi(host))
mmc_deselect_cards(host);
} else {
if (mmc_card_can_sleep(host))
err = mmc_card_sleep(host);
else if (!mmc_host_is_spi(host))
mmc_deselect_cards(host);
}
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_release_host(host);
return err;
}
/* Routine to resume the MMC device */
static int omap_mmc_resume(struct platform_device *pdev)
{
int ret = 0;
struct mmc_omap_host *host = platform_get_drvdata(pdev);
if (host && !host->suspended){
if (host->card_sleep){/*mmc is sleeping but mmc regulator power on*/
if (mmc_card_can_sleep(host->mmc))
mmc_card_awake(host->mmc);
host->card_sleep = 0;
}
return 0;
}
if (host) {
if (host->card_sleep){
host->card_sleep = 0;
}
if (host->pdata->resume) {
ret = host->pdata->resume(&pdev->dev, host->slot_id);
if (ret)
dev_dbg(mmc_dev(host->mmc),
"Unmask interrupt failed\n");
}
/* Notify the core to resume the host */
ret = mmc_resume_host(host->mmc);
if (ret == 0)
host->suspended = 0;
}
return ret;
}
/*
* Suspend callback from host.
*/
static int mmc_suspend(struct mmc_host *host)
{
int err = 0;
BUG_ON(!host);
BUG_ON(!host->card);
mmc_claim_host(host);
//Begin Eric9_Luo@pegatron [20120409] Prevent eMMC suspend
#if 0
if (mmc_card_can_sleep(host))
err = mmc_card_sleep(host);
else
#endif
//End Eric9_Luo@pegatron [20120409] Prevent eMMC suspend
if (!mmc_host_is_spi(host))
mmc_deselect_cards(host);
host->card->state &= ~MMC_STATE_HIGHSPEED;
mmc_release_host(host);
return err;
}
static int omap_mmc_suspend(struct platform_device *pdev, pm_message_t state)
{
int ret = 0;
int err = 0;
struct mmc_omap_host *host = platform_get_drvdata(pdev);
if (host && host->suspended)
return 0;
if (host) {
host->suspended = 1;
if (host->card_sleep){
dev_dbg(mmc_dev(host->mmc),"has been in sleep status\n");
}
else if (mmc_card_can_sleep(host->mmc)){
err = mmc_card_sleep(host->mmc);
if (err){
dev_dbg(mmc_dev(host->mmc),"MMC sleep command CMD5 return error\n");
}
else{
host->card_sleep = 1;
}
}
if (host->pdata->suspend) {
ret = host->pdata->suspend(&pdev->dev,
host->slot_id);
if (ret) {
dev_dbg(mmc_dev(host->mmc),
"Unable to handle MMC board"
" level suspend\n");
host->suspended = 0;
return ret;
}
}
cancel_work_sync(&host->mmc_carddetect_work);
ret = mmc_suspend_host(host->mmc, state);
if (ret == 0) {
omap_hsmmc_enable_clks(host);
OMAP_HSMMC_WRITE(host->base, ISE, 0);
OMAP_HSMMC_WRITE(host->base, IE, 0);
if (host->id == OMAP_MMC1_DEVID
&& !(OMAP_HSMMC_READ(host->base, HCTL)
& SDVSDET)) {
OMAP_HSMMC_WRITE(host->base, HCTL,
OMAP_HSMMC_READ(host->base, HCTL)
& SDVSCLR);
OMAP_HSMMC_WRITE(host->base, HCTL,
OMAP_HSMMC_READ(host->base, HCTL)
| SDVS30);
OMAP_HSMMC_WRITE(host->base, HCTL,
OMAP_HSMMC_READ(host->base, HCTL)
| SDBP);
}
omap_hsmmc_disable_clks(host);
} else {
host->suspended = 0;
if (host->pdata->resume) {
ret = host->pdata->resume(&pdev->dev,
host->slot_id);
if (ret)
dev_dbg(mmc_dev(host->mmc),
"Unmask interrupt failed\n");
}
}
}
return ret;
}
