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Commit d19af7aa authored Nov 14, 2018 by Sujeev Dias Committed by Gerrit - the friendly Code Review server Dec 04, 2018

mhi: core: add support for wake capable devices



Some MHI channels has time sensitive data and must
meet required deadline. Configure those channels as
wakeup device.

CRs-Fixed: 2348867
Change-Id: Id9cf7ff54d9bf7e4c44a83bca8de5cb9936c12a8
Signed-off-by: Sujeev Dias <sdias@codeaurora.org>

parent 94da5973

drivers/bus/mhi/core/mhi_init.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -989,6 +989,8 @@ static int of_parse_ch_cfg(struct mhi_controller *mhi_cntrl,
		"mhi,auto-queue");
		mhi_chan->auto_start = of_property_read_bool(child,
		"mhi,auto-start");
		mhi_chan->wake_capable = of_property_read_bool(child,
		"mhi,wake-capable");

		if (mhi_chan->pre_alloc &&
		(mhi_chan->dir != DMA_FROM_DEVICE \|\|

drivers/bus/mhi/core/mhi_internal.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -594,6 +594,7 @@ struct mhi_chan {
		bool offload_ch;
		bool pre_alloc;
		bool auto_start;
		bool wake_capable; /* channel should wake up system */
		/* functions that generate the transfer ring elements */
		int (gen_tre)(struct mhi_controller , struct mhi_chan , void ,
		void *, size_t, enum MHI_FLAGS);

drivers/bus/mhi/core/mhi_main.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -780,6 +780,10 @@ void mhi_create_devices(struct mhi_controller *mhi_cntrl)
		/* add if there is a matching DT node */
		mhi_assign_of_node(mhi_cntrl, mhi_dev);

		/* init wake source */
		if (mhi_dev->dl_chan && mhi_dev->dl_chan->wake_capable)
		device_init_wakeup(&mhi_dev->dev, true);

		ret = device_add(&mhi_dev->dev);
		if (ret) {
		MHI_ERR("Failed to register dev for chan:%s\n",