diff options
Diffstat (limited to 'drivers/mmc/host/sdhci.c')
| -rw-r--r-- | drivers/mmc/host/sdhci.c | 78 |
1 files changed, 61 insertions, 17 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index fd36b822f809..bd5acfb0c1b8 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -87,6 +87,47 @@ static void sdhci_dumpregs(struct sdhci_host *host) * * \*****************************************************************************/ +static void sdhci_clear_set_irqs(struct sdhci_host *host, u32 clear, u32 set) +{ + u32 ier; + + ier = sdhci_readl(host, SDHCI_INT_ENABLE); + ier &= ~clear; + ier |= set; + sdhci_writel(host, ier, SDHCI_INT_ENABLE); + sdhci_writel(host, ier, SDHCI_SIGNAL_ENABLE); +} + +static void sdhci_unmask_irqs(struct sdhci_host *host, u32 irqs) +{ + sdhci_clear_set_irqs(host, 0, irqs); +} + +static void sdhci_mask_irqs(struct sdhci_host *host, u32 irqs) +{ + sdhci_clear_set_irqs(host, irqs, 0); +} + +static void sdhci_set_card_detection(struct sdhci_host *host, bool enable) +{ + u32 irqs = SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT; + + if (enable) + sdhci_unmask_irqs(host, irqs); + else + sdhci_mask_irqs(host, irqs); +} + +static void sdhci_enable_card_detection(struct sdhci_host *host) +{ + sdhci_set_card_detection(host, true); +} + +static void sdhci_disable_card_detection(struct sdhci_host *host) +{ + sdhci_set_card_detection(host, false); +} + static void sdhci_reset(struct sdhci_host *host, u8 mask) { unsigned long timeout; @@ -120,20 +161,21 @@ static void sdhci_reset(struct sdhci_host *host, u8 mask) static void sdhci_init(struct sdhci_host *host) { - u32 intmask; - sdhci_reset(host, SDHCI_RESET_ALL); - intmask = SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT | + sdhci_clear_set_irqs(host, SDHCI_INT_ALL_MASK, + SDHCI_INT_BUS_POWER | SDHCI_INT_DATA_END_BIT | SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_TIMEOUT | SDHCI_INT_INDEX | SDHCI_INT_END_BIT | SDHCI_INT_CRC | SDHCI_INT_TIMEOUT | - SDHCI_INT_CARD_REMOVE | SDHCI_INT_CARD_INSERT | SDHCI_INT_DATA_AVAIL | SDHCI_INT_SPACE_AVAIL | SDHCI_INT_DMA_END | SDHCI_INT_DATA_END | SDHCI_INT_RESPONSE | - SDHCI_INT_ADMA_ERROR; + SDHCI_INT_ADMA_ERROR); +} - sdhci_writel(host, intmask, SDHCI_INT_ENABLE); - sdhci_writel(host, intmask, SDHCI_SIGNAL_ENABLE); +static void sdhci_reinit(struct sdhci_host *host) +{ + sdhci_init(host); + sdhci_enable_card_detection(host); } static void sdhci_activate_led(struct sdhci_host *host) @@ -1032,7 +1074,7 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) */ if (ios->power_mode == MMC_POWER_OFF) { sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE); - sdhci_init(host); + sdhci_reinit(host); } sdhci_set_clock(host, ios->clock); @@ -1093,7 +1135,6 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) { struct sdhci_host *host; unsigned long flags; - u32 ier; host = mmc_priv(mmc); @@ -1102,15 +1143,10 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) if (host->flags & SDHCI_DEVICE_DEAD) goto out; - ier = sdhci_readl(host, SDHCI_INT_ENABLE); - - ier &= ~SDHCI_INT_CARD_INT; if (enable) - ier |= SDHCI_INT_CARD_INT; - - sdhci_writel(host, ier, SDHCI_INT_ENABLE); - sdhci_writel(host, ier, SDHCI_SIGNAL_ENABLE); - + sdhci_unmask_irqs(host, SDHCI_INT_CARD_INT); + else + sdhci_mask_irqs(host, SDHCI_INT_CARD_INT); out: mmiowb(); @@ -1452,6 +1488,8 @@ int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state) { int ret; + sdhci_disable_card_detection(host); + ret = mmc_suspend_host(host->mmc, state); if (ret) return ret; @@ -1484,6 +1522,8 @@ int sdhci_resume_host(struct sdhci_host *host) if (ret) return ret; + sdhci_enable_card_detection(host); + return 0; } @@ -1743,6 +1783,8 @@ int sdhci_add_host(struct sdhci_host *host) (host->flags & SDHCI_USE_ADMA)?"A":"", (host->flags & SDHCI_USE_DMA)?"DMA":"PIO"); + sdhci_enable_card_detection(host); + return 0; #ifdef SDHCI_USE_LEDS_CLASS @@ -1779,6 +1821,8 @@ void sdhci_remove_host(struct sdhci_host *host, int dead) spin_unlock_irqrestore(&host->lock, flags); } + sdhci_disable_card_detection(host); + mmc_remove_host(host->mmc); #ifdef SDHCI_USE_LEDS_CLASS |
