From eed222aca8d077af3600b651176f6fd04d95cce1 Mon Sep 17 00:00:00 2001 From: Aaron Lu Date: Tue, 5 Mar 2013 11:24:52 +0800 Subject: mmc: sdio: bind acpi with sdio function device ACPI spec 5 defined the _ADR encoding for sdio bus as: High word - slot number (0 based) Low word - function number This patch adds support for binding sdio function device with acpi node, and if successful, involve acpi into its power management. Signed-off-by: Aaron Lu Reviewed-by: Adrian Hunter Signed-off-by: Chris Ball --- drivers/mmc/core/sdio_bus.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'drivers/mmc/core') diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c index 5e57048e2c1d..8d6bb1821834 100644 --- a/drivers/mmc/core/sdio_bus.c +++ b/drivers/mmc/core/sdio_bus.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -299,6 +300,19 @@ struct sdio_func *sdio_alloc_func(struct mmc_card *card) return func; } +#ifdef CONFIG_ACPI +static void sdio_acpi_set_handle(struct sdio_func *func) +{ + struct mmc_host *host = func->card->host; + u64 addr = (host->slotno << 16) | func->num; + + ACPI_HANDLE_SET(&func->dev, + acpi_get_child(ACPI_HANDLE(host->parent), addr)); +} +#else +static inline void sdio_acpi_set_handle(struct sdio_func *func) {} +#endif + /* * Register a new SDIO function with the driver model. */ @@ -308,9 +322,12 @@ int sdio_add_func(struct sdio_func *func) dev_set_name(&func->dev, "%s:%d", mmc_card_id(func->card), func->num); + sdio_acpi_set_handle(func); ret = device_add(&func->dev); - if (ret == 0) + if (ret == 0) { sdio_func_set_present(func); + acpi_dev_pm_attach(&func->dev, false); + } return ret; } @@ -326,6 +343,7 @@ void sdio_remove_func(struct sdio_func *func) if (!sdio_func_present(func)) return; + acpi_dev_pm_detach(&func->dev, false); device_del(&func->dev); put_device(&func->dev); } -- cgit v1.2.3