Thanks Andreas for the patch,
On Saturday 05 October 2013 04:47 PM, Andreas Fenkart wrote:
The am335x can't detect pending cirq in PM runtime suspend.
This patch reconfigures dat1 as a GPIO before going to suspend.
SDIO interrupts are detected with the GPIO, while in runtime
suspend, standard detection of the module block otherwise.
Signed-off-by: Andreas Fenkart <afenk...@gmail.com>
@@ -2293,23 +2440,66 @@ static int omap_hsmmc_resume(struct device *dev)
static int omap_hsmmc_runtime_suspend(struct device *dev)
{
struct omap_hsmmc_host *host;
+ unsigned long flags;
+ int ret = 0;
host = platform_get_drvdata(to_platform_device(dev));
omap_hsmmc_context_save(host);
dev_dbg(dev, "disabled\n");
- return 0;
+ if (host->flags & HSMMC_SWAKEUP_QUIRK) {
+ spin_lock_irqsave(&host->irq_lock, flags);
+ OMAP_HSMMC_WRITE(host->base, ISE, 0);
+ OMAP_HSMMC_WRITE(host->base, IE, 0);
+ OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR);
+ spin_unlock_irqrestore(&host->irq_lock, flags);
+
+ ret = pinctrl_select_state(host->pinctrl, host->idle);
+ if (ret < 0)
+ dev_warn(mmc_dev(host->mmc), "Unable to select idle
pinmux\n");
+
+ enable_irq(mmc_slot(host).sdio_irq);
+ }
+
+ spin_lock_irqsave(&host->irq_lock, flags);
+ /* infinite loop, if irq not cleared in omap_hsmmc_enable_sdio_irq */
+ host->flags |= HSMMC_RUNTIME_SUSPENDED;
Can you provide more details about the infinite loop and how it will get
recovered.
+ spin_unlock_irqrestore(&host->irq_lock, flags);
+
+ return ret;
}
static int omap_hsmmc_runtime_resume(struct device *dev)
{
struct omap_hsmmc_host *host;
+ unsigned long flags;
+ int ret = 0;
host = platform_get_drvdata(to_platform_device(dev));
omap_hsmmc_context_restore(host);
dev_dbg(dev, "enabled\n");
- return 0;
+ spin_lock_irqsave(&host->irq_lock, flags);
+ /* infinite loop, if irq not cleared in omap_hsmmc_enable_sdio_irq */
+ host->flags &= ~HSMMC_RUNTIME_SUSPENDED;
+ spin_unlock_irqrestore(&host->irq_lock, flags);
+
+ if (host->flags & HSMMC_SWAKEUP_QUIRK) {
+ disable_irq(mmc_slot(host).sdio_irq);
+
+ ret = pinctrl_select_state(host->pinctrl, host->active);
+ if (ret < 0)
+ dev_warn(mmc_dev(host->mmc), "Unable to select active
pinmux\n");
+
+ spin_lock_irqsave(&host->irq_lock, flags);
+ if (host->flags & HSMMC_SDIO_IRQ_ENABLED) {
+ OMAP_HSMMC_WRITE(host->base, STAT, STAT_CLEAR);
+ OMAP_HSMMC_WRITE(host->base, ISE, CIRQ_EN);
+ OMAP_HSMMC_WRITE(host->base, IE, CIRQ_EN);
+ }
+ spin_unlock_irqrestore(&host->irq_lock, flags);
+ }
+ return ret;
}
static struct dev_pm_ops omap_hsmmc_dev_pm_ops = {
diff --git a/include/linux/platform_data/mmc-omap.h
b/include/linux/platform_data/mmc-omap.h
index 2bf1b30..fd5fff5 100644
--- a/include/linux/platform_data/mmc-omap.h
+++ b/include/linux/platform_data/mmc-omap.h
@@ -115,6 +115,7 @@ struct omap_mmc_platform_data {
int switch_pin; /* gpio (card detect) */
int gpio_wp; /* gpio (write protect) */
+ int gpio_cirq; /* gpio (card irq) */
int (*set_bus_mode)(struct device *dev, int slot, int bus_mode);
int (*set_power)(struct device *dev, int slot,
@@ -145,6 +146,9 @@ struct omap_mmc_platform_data {
int card_detect_irq;
int (*card_detect)(struct device *dev, int slot);
+ /* SDIO IRQs */
+ int sdio_irq;
+
unsigned int ban_openended:1;
} slots[OMAP_MMC_MAX_SLOTS];
--
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