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mmc: sdhci: Rework sdhci_enable_irq_wakeups()

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In preparation for adding more conditions for whether IRQ wakeup is
enabled, rework sdhci_enable_irq_wakeups() so that needed bits are added
instead of adding them all and then removing the unneeded bits.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Adrian Hunter 2018-01-09 09:52:22 +02:00 committed by Ulf Hansson
parent 58e79b6075
commit 81b14543ac
1 changed files with 15 additions and 10 deletions
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25
drivers/mmc/host/sdhci.c
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@ -2830,20 +2830,25 @@ static irqreturn_t sdhci_thread_irq(int irq, void *dev_id)
*/
static bool sdhci_enable_irq_wakeups(struct sdhci_host *host)
{
u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE |
SDHCI_WAKE_ON_INT;
u32 irq_val = 0;
u8 wake_val = 0;
u8 val;
u8 mask = SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE
| SDHCI_WAKE_ON_INT;
u32 irq_val = SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE |
SDHCI_INT_CARD_INT;
if (!(host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)) {
wake_val |= SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE;
irq_val |= SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE;
}
wake_val |= SDHCI_WAKE_ON_INT;
irq_val |= SDHCI_INT_CARD_INT;
val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL);
val |= mask ;
/* Avoid fake wake up */
if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) {
val &= ~(SDHCI_WAKE_ON_INSERT | SDHCI_WAKE_ON_REMOVE);
irq_val &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE);
}
val &= ~mask;
val |= wake_val;
sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL);
sdhci_writel(host, irq_val, SDHCI_INT_ENABLE);
host->irq_wake_enabled = !enable_irq_wake(host->irq);