diff mbox series

[V2,1/2] mmc: core: Define a new vendor ops to enable wakeup capability

Message ID 20220526121215.25947-2-quic_sartgarg@quicinc.com
State New
Headers show
Series mmc: Add wakeup functionality support for sdio cards | expand

Commit Message

Sarthak Garg May 26, 2022, 12:12 p.m. UTC 
Define a new vendor ops to let vendor initialize card as wakeup source
and enable wakeup capability specially for SDIO cards which supports
waking host from system suspend through external dedicated pins.

Signed-off-by: Sarthak Garg <quic_sartgarg@quicinc.com>
---
 drivers/mmc/core/bus.c   | 3 +++
 include/linux/mmc/host.h | 7 +++++++
 2 files changed, 10 insertions(+)
diff mbox series

Patch

diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index 58a60afa650b..6192a52288fd 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -364,6 +364,9 @@  int mmc_add_card(struct mmc_card *card)
 #endif
 	card->dev.of_node = mmc_of_find_child_device(card->host, 0);
 
+	if (card->host->ops->card_init_wakeup)
+		card->host->ops->card_init_wakeup(card);
+
 	device_enable_async_suspend(&card->dev);
 
 	ret = device_add(&card->dev);
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index c193c50ccd78..3bd4374a64b8 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -193,6 +193,13 @@  struct mmc_host_ops {
 
 	/* Initialize an SD express card, mandatory for MMC_CAP2_SD_EXP. */
 	int	(*init_sd_express)(struct mmc_host *host, struct mmc_ios *ios);
+
+	/*
+	 * Optional for vendor to initialize card as wakeup source and
+	 * enable wakeup capability specially for SDIO cards which supports
+	 * waking host from suspend through external dedicated pins.
+	 */
+	void    (*card_init_wakeup)(struct mmc_card *card);
 };
 
 struct mmc_cqe_ops {