From: Ohad Ben-Cohen <ohadb@xxxxxx>
Add support for software emulation of card detect
events.
This is required for specific controllers
that are hard wired with embedded SDIO devices
(such as TI's wl1271 WLAN device).
Board-specific configuration is required to
enable this software card detect control.
Based on Android's EMBEDDED SDIO patch by
San Mehat <san@xxxxxxxxxxx>.
Signed-off-by: Ohad Ben-Cohen <ohadb@xxxxxx>
---
drivers/mmc/host/omap_hsmmc.c | 37 ++++++++++++++++++++++++++++++++++++-
1 files changed, 36 insertions(+), 1 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index b032828..60694df 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -1208,6 +1208,38 @@ static void omap_hsmmc_detect(struct work_struct *work)
mmc_detect_change(host->mmc, (HZ * 50) / 1000);
}
+#ifdef CONFIG_MMC_EMBEDDED_SDIO
+static void omap_hsmmc_set_embedded_data(void *dev_id, void *priv)
+{
+ struct omap_hsmmc_host *host = dev_id;
+ struct mmc_host *mmc = host->mmc;
+
+ mmc_set_embedded_data(mmc, priv);
+}
+
+static void omap_hsmmc_virtual_detect(void *dev_id, int carddetect)
+{
+ struct omap_hsmmc_host *host = dev_id;
+
+ printk(KERN_DEBUG "%s: card detect %d\n", mmc_hostname(host->mmc),
+ carddetect);
+
+ sysfs_notify(&host->mmc->class_dev.kobj, NULL, "cover_switch");
+
+ if (carddetect)
+ mmc_detect_change(host->mmc, (HZ * 200) / 1000);
+ else
+ mmc_detect_change(host->mmc, (HZ * 50) / 1000);
+}
+#else
+static void omap_hsmmc_set_embedded_data(void *dev_id, void *priv)
+{
+}
+static void omap_hsmmc_virtual_detect(void *dev_id, int carddetect)
+{
+}
+#endif
+
/*
* ISR for handling card insertion and removal
*/
@@ -2170,7 +2202,10 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
"Unable to grab MMC CD IRQ\n");
goto err_irq_cd;
}
- }
+ } else if (mmc_slot(host).register_embedded_control)
+ mmc_slot(host).register_embedded_control(host,
+ omap_hsmmc_virtual_detect,
+ omap_hsmmc_set_embedded_data);
omap_hsmmc_disable_irq(host);
--
1.7.0.4
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