Commit 6cb63ea6 authored by Alex Elder's avatar Alex Elder Committed by David S. Miller
Browse files

net: ipa: introduce ipa_cmd_tag_process() 



Create a new function ipa_cmd_tag_process() that simply allocates a
transaction, adds a tag process command to it to clear the hardware
pipeline, and commits the transaction.

Call it in from ipa_endpoint_suspend(), after suspending the modem
endpoints but before suspending the AP command TX and AP LAN RX
endpoints (which are used by the tag sequence).

Signed-off-by: default avatarAlex Elder <elder@linaro.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 41af5436

drivers/net/ipa/ipa_cmd.c

+15 −0
Original line number Diff line number Diff line
@@ -586,6 +586,21 @@ u32 ipa_cmd_tag_process_count(void) 
	return 4;

}



void ipa_cmd_tag_process(struct ipa *ipa)

{

	u32 count = ipa_cmd_tag_process_count();

	struct gsi_trans *trans;



	trans = ipa_cmd_trans_alloc(ipa, count);

	if (trans) {

		ipa_cmd_tag_process_add(trans);

		gsi_trans_commit_wait(trans);

	} else {

		dev_err(&ipa->pdev->dev,

			"error allocating %u entry tag transaction\n", count);

	}

}



static struct ipa_cmd_info *

ipa_cmd_info_alloc(struct ipa_endpoint *endpoint, u32 tre_count)

{

drivers/net/ipa/ipa_cmd.h

+8 −0
Original line number Diff line number Diff line
@@ -171,6 +171,14 @@ void ipa_cmd_tag_process_add(struct gsi_trans *trans); 
 */

u32 ipa_cmd_tag_process_count(void);



/**

 * ipa_cmd_tag_process() - Perform a tag process

 *

 * @Return:	The number of elements to allocate in a transaction

 *		to hold tag process commands

 */

void ipa_cmd_tag_process(struct ipa *ipa);



/**

 * ipa_cmd_trans_alloc() - Allocate a transaction for the command TX endpoint

 * @ipa:	IPA pointer

drivers/net/ipa/ipa_endpoint.c

+2 −0
Original line number Diff line number Diff line
@@ -1450,6 +1450,8 @@ void ipa_endpoint_suspend(struct ipa *ipa) 
	if (ipa->modem_netdev)

		ipa_modem_suspend(ipa->modem_netdev);



	ipa_cmd_tag_process(ipa);



	ipa_endpoint_suspend_one(ipa->name_map[IPA_ENDPOINT_AP_LAN_RX]);

	ipa_endpoint_suspend_one(ipa->name_map[IPA_ENDPOINT_AP_COMMAND_TX]);

}

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