From: Ohad Ben-Cohen <oh...@ti.com> 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 <s...@android.com>. Signed-off-by: Ohad Ben-Cohen <oh...@ti.com> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html