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sdio: add interface for host side SDIO interrupt reporting

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Signed-off-by: Nicolas Pitre <npitre@mvista.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Nicolas Pitre
2007-07-24 02:09:39 -04:00
committed by Pierre Ossman
parent 112c9db91e
commit 17b759aff9
3 changed files with 18 additions and 1 deletions
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3
drivers/mmc/core/host.c
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@@ -100,6 +100,9 @@ int mmc_add_host(struct mmc_host *host)
{
int err;
WARN_ON((host->caps & MMC_CAP_SDIO_IRQ) &&
!host->ops->enable_sdio_irq);
if (!idr_pre_get(&mmc_host_idr, GFP_KERNEL))
return -ENOMEM;

8
drivers/mmc/core/sdio_irq.c
View File

@@ -70,7 +70,8 @@ static int sdio_irq_thread(void *_host)
* asynchronous notification of pending SDIO card interrupts
* hence we poll for them in that case.
*/
period = msecs_to_jiffies(10);
period = (host->caps & MMC_CAP_SDIO_IRQ) ?
MAX_SCHEDULE_TIMEOUT : msecs_to_jiffies(10);
pr_debug("%s: IRQ thread started (poll period = %lu jiffies)\n",
mmc_hostname(host), period);
@@ -104,11 +105,16 @@ static int sdio_irq_thread(void *_host)
ssleep(1);
set_task_state(current, TASK_INTERRUPTIBLE);
if (host->caps & MMC_CAP_SDIO_IRQ)
host->ops->enable_sdio_irq(host, 1);
if (!kthread_should_stop())
schedule_timeout(period);
set_task_state(current, TASK_RUNNING);
} while (!kthread_should_stop());
if (host->caps & MMC_CAP_SDIO_IRQ)
host->ops->enable_sdio_irq(host, 0);
pr_debug("%s: IRQ thread exiting with code %d\n",
mmc_hostname(host), ret);