diff options
| author | Grygorii Strashko <grygorii.strashko@ti.com> | 2020-07-25 00:19:12 +0300 |
|---|---|---|
| committer | Santosh Shilimkar <santosh.shilimkar@oracle.com> | 2020-07-25 00:19:12 +0300 |
| commit | 43148b1cab44dbabf91cb70749ef3f9b24592e91 (patch) | |
| tree | ec8e567ee6321ef5b9bb410303e78fdc9a48cacf | |
| parent | 175e663f70d67945980dba7e998380a7c9b2b29c (diff) | |
| download | linux-43148b1cab44dbabf91cb70749ef3f9b24592e91.tar.xz | |
soc: ti: k3-ringacc: add request pair of rings api.
Add new API k3_ringacc_request_rings_pair() to request pair of rings at
once, as in the most cases Rings are used with DMA channels, which need 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: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
| -rw-r--r-- | drivers/soc/ti/k3-ringacc.c | 24 | ||||
| -rw-r--r-- | include/linux/soc/ti/k3-ringacc.h | 4 |
2 files changed, 28 insertions, 0 deletions
diff --git a/drivers/soc/ti/k3-ringacc.c b/drivers/soc/ti/k3-ringacc.c index 3d8e11079ede..c9f022037942 100644 --- a/drivers/soc/ti/k3-ringacc.c +++ b/drivers/soc/ti/k3-ringacc.c @@ -322,6 +322,30 @@ error: } EXPORT_SYMBOL_GPL(k3_ringacc_request_ring); +int k3_ringacc_request_rings_pair(struct k3_ringacc *ringacc, + int fwd_id, int compl_id, + struct k3_ring **fwd_ring, + struct k3_ring **compl_ring) +{ + int ret = 0; + + if (!fwd_ring || !compl_ring) + return -EINVAL; + + *fwd_ring = k3_ringacc_request_ring(ringacc, fwd_id, 0); + if (!(*fwd_ring)) + return -ENODEV; + + *compl_ring = k3_ringacc_request_ring(ringacc, compl_id, 0); + if (!(*compl_ring)) { + k3_ringacc_ring_free(*fwd_ring); + ret = -ENODEV; + } + + return ret; +} +EXPORT_SYMBOL_GPL(k3_ringacc_request_rings_pair); + static void k3_ringacc_ring_reset_sci(struct k3_ring *ring) { struct k3_ringacc *ringacc = ring->parent; diff --git a/include/linux/soc/ti/k3-ringacc.h b/include/linux/soc/ti/k3-ringacc.h index 26f73df0a524..7ac115432fa1 100644 --- a/include/linux/soc/ti/k3-ringacc.h +++ b/include/linux/soc/ti/k3-ringacc.h @@ -107,6 +107,10 @@ struct k3_ringacc *of_k3_ringacc_get_by_phandle(struct device_node *np, struct k3_ring *k3_ringacc_request_ring(struct k3_ringacc *ringacc, int id, u32 flags); +int k3_ringacc_request_rings_pair(struct k3_ringacc *ringacc, + int fwd_id, int compl_id, + struct k3_ring **fwd_ring, + struct k3_ring **compl_ring); /** * k3_ringacc_ring_reset - ring reset * @ring: pointer on Ring |