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Commit 4a8655fb authored by Lina Iyer's avatar Lina Iyer
Browse files

drivers: qcom: rpmh: export controller status 



Query the TCS mailbox driver to see if the driver and hardware are busy
handling RPMH requests or waiting for responses.

Change-Id: I2afca68776387b79447034f6554a683cb4df3cf1
Signed-off-by: default avatarLina Iyer <ilina@codeaurora.org>
parent 1996ec83

drivers/soc/qcom/rpmh.c

+22 −0
Original line number Diff line number Diff line
@@ -844,6 +844,28 @@ int rpmh_read(struct rpmh_client *rc, u32 addr, u32 *resp) 
}

EXPORT_SYMBOL(rpmh_read);



/**

 * rpmh_ctrlr_idle: Check if the controller is idle

 *

 * @rc: The RPMH handle got from rpmh_get_dev_channel

 *

 * Returns if the controller is idle or not.

 */

int rpmh_ctrlr_idle(struct rpmh_client *rc)

{

	if (IS_ERR_OR_NULL(rc))

		return -EINVAL;



	if (rpmh_standalone)

		return 0;



	if (!mbox_controller_is_idle(rc->chan))

		return -EBUSY;



	return 0;

}

EXPORT_SYMBOL(rpmh_ctrlr_idle);



static inline int is_req_valid(struct rpmh_req *req)

{

	return (req->sleep_val != UINT_MAX && req->wake_val != UINT_MAX

include/soc/qcom/rpmh.h

+5 −0
Original line number Diff line number Diff line
@@ -40,6 +40,8 @@ int rpmh_write_control(struct rpmh_client *rc, struct tcs_cmd *cmd, int n); 


int rpmh_invalidate(struct rpmh_client *rc);



int rpmh_ctrlr_idle(struct rpmh_client *rc);



int rpmh_flush(struct rpmh_client *rc);



int rpmh_read(struct rpmh_client *rc, u32 addr, u32 *resp);
@@ -82,6 +84,9 @@ static inline int rpmh_write_control(struct rpmh_client *rc, 
static inline int rpmh_invalidate(struct rpmh_client *rc)

{ return -ENODEV; }



static inline int rpmh_ctrlr_idle(struct rpmh_client *rc)

{ return -ENODEV; }



static inline int rpmh_flush(struct rpmh_client *rc)

{ return -ENODEV; }