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soc: ti: k3-ringacc: Add an API to request pair of rings

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Add new API k3_ringacc_request_rings_pair() to request pair of rings at
once, as in the most case Rings are used with DMA channels which required
to request pair of rings - one to feed DMA with descriptors (TX/RX FDQ) and
one to receive completions (RX/TX CQ). This will allow to simplify Ringacc
API users.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
This commit is contained in:
Vignesh Raghavendra 2020-07-06 13:26:23 +05:30 committed by Lokesh Vutla
parent db08a1df43
commit 5d25784998
2 changed files with 27 additions and 0 deletions
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23
drivers/soc/ti/k3-navss-ringacc.c
View File

@ -321,6 +321,29 @@ error:
return NULL;
}
int k3_nav_ringacc_request_rings_pair(struct k3_nav_ringacc *ringacc,
int fwd_id, int compl_id,
struct k3_nav_ring **fwd_ring,
struct k3_nav_ring **compl_ring)
{
int ret = 0;
if (!fwd_ring || !compl_ring)
return -EINVAL;
*fwd_ring = k3_nav_ringacc_request_ring(ringacc, fwd_id, 0);
if (!(*fwd_ring))
return -ENODEV;
*compl_ring = k3_nav_ringacc_request_ring(ringacc, compl_id, 0);
if (!(*compl_ring)) {
k3_nav_ringacc_ring_free(*fwd_ring);
ret = -ENODEV;
}
return ret;
}
static void k3_ringacc_ring_reset_sci(struct k3_nav_ring *ring)
{
struct k3_nav_ringacc *ringacc = ring->parent;

4
include/linux/soc/ti/k3-navss-ringacc.h
View File

@ -100,6 +100,10 @@ struct k3_nav_ring_cfg {
struct k3_nav_ring *k3_nav_ringacc_request_ring(struct k3_nav_ringacc *ringacc,
int id, u32 flags);
int k3_nav_ringacc_request_rings_pair(struct k3_nav_ringacc *ringacc,
int fwd_id, int compl_id,
struct k3_nav_ring **fwd_ring,
struct k3_nav_ring **compl_ring);
/**
* k3_nav_ringacc_get_dev - get pointer on RA device
* @ringacc: pointer on RA