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delay 2s for the same sdcard check

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lhh
2011-01-27 17:07:03 +08:00
parent faaf2e06d0
commit 0a70ec0d75
1 changed files with 11 additions and 10 deletions
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21
drivers/mmc/host/rk29_sdmmc.c
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@@ -1150,7 +1150,7 @@ static irqreturn_t rk29_sdmmc_interrupt(int irq, void *dev_id)
u32 status, pending;
unsigned int pass_count = 0;
bool present;
//bool present_old;
bool present_old;
spin_lock(&host->lock);
do {
@@ -1161,16 +1161,17 @@ static irqreturn_t rk29_sdmmc_interrupt(int irq, void *dev_id)
if(pending & SDMMC_INT_CD) {
rk29_sdmmc_write(host->regs, SDMMC_RINTSTS, SDMMC_INT_CD); // clear sd detect int
present = rk29_sdmmc_get_cd(host->mmc);
//present_old = test_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
//if(present != present_old) {
if (present != 0) {
set_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
present_old = test_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
if (present != 0) {
set_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
if(present == present_old)
mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(2000));
else
mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(200));
} else {
clear_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(10));
}
//}
} else {
clear_bit(RK29_SDMMC_CARD_PRESENT, &host->flags);
mod_timer(&host->detect_timer, jiffies + msecs_to_jiffies(10));
}
}
if(pending & RK29_SDMMC_CMD_ERROR_FLAGS) {
rk29_sdmmc_write(host->regs, SDMMC_RINTSTS,RK29_SDMMC_CMD_ERROR_FLAGS); // clear interrupt