On 20 May 2016 at 13:46, Adrian Hunter <adrian.hunter@xxxxxxxxx> wrote:
> On 13/05/16 16:16, Ludovic Desroches wrote:
>> Activating wakeup event is not enough to get a wakeup signal. The
>> corresponding events have to be enabled in the Interrupt Status Enable
>> Register too. It follows the specification and is needed at least by
>> sdhci-of-at91.
>>
>> Signed-off-by: Ludovic Desroches <ludovic.desroches@xxxxxxxxx>
>
> Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Is this material for stable and as a fix for 4.6?
Kind regards
Uffe
>
>
>> ---
>> drivers/mmc/host/sdhci.c | 15 ++++++++++++++-
>> 1 file changed, 14 insertions(+), 1 deletion(-)
>>
>> Changes:
>> - v2:
>> - update commit message and comments
>> - do not rename val and mask variables
>>
>> diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
>> index e010ea4..e351859 100644
>> --- a/drivers/mmc/host/sdhci.c
>> +++ b/drivers/mmc/host/sdhci.c
>> @@ -2605,18 +2605,31 @@ static irqreturn_t sdhci_thread_irq(int irq, void *dev_id)
>> \*****************************************************************************/
>>
>> #ifdef CONFIG_PM
>> +/*
>> + * To enable wakeup events, the corresponding events have to be enabled in
>> + * the Interrupt Status Enable register too. See 'Table 1-6: Wakeup Signal
>> + * Table' in the SD Host Controller Standard Specification.
>> + * It is useless to restore SDHCI_INT_ENABLE state in
>> + * sdhci_disable_irq_wakeups() since it will be set by
>> + * sdhci_enable_card_detection() or sdhci_init().
>> + */
>> void sdhci_enable_irq_wakeups(struct sdhci_host *host)
>> {
>> 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;
>>
>> val = sdhci_readb(host, SDHCI_WAKE_UP_CONTROL);
>> val |= mask ;
>> /* Avoid fake wake up */
>> - if (host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION)
>> + 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);
>> + }
>> sdhci_writeb(host, val, SDHCI_WAKE_UP_CONTROL);
>> + sdhci_writel(host, irq_val, SDHCI_INT_ENABLE);
>> }
>> EXPORT_SYMBOL_GPL(sdhci_enable_irq_wakeups);
>>
>>
>
--
To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
