From: Grygorii Strashko <grygorii.strashko@ti.com>
To: Peter Ujfalusi <peter.ujfalusi@ti.com>,
Rob Herring <robh+dt@kernel.org>, Vinod Koul <vkoul@kernel.org>,
Santosh Shilimkar <ssantosh@kernel.org>
Cc: Sekhar Nori <nsekhar@ti.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
Vignesh Raghavendra <vigneshr@ti.com>,
<dmaengine@vger.kernel.org>,
Grygorii Strashko <grygorii.strashko@ti.com>
Subject: [PATCH next 4/6] soc: ti: k3-ringacc: add request pair of rings api.
Date: Wed, 1 Jul 2020 13:30:28 +0300 [thread overview]
Message-ID: <20200701103030.29684-5-grygorii.strashko@ti.com> (raw)
In-Reply-To: <20200701103030.29684-1-grygorii.strashko@ti.com>
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>
---
drivers/soc/ti/k3-ringacc.c | 24 ++++++++++++++++++++++++
include/linux/soc/ti/k3-ringacc.h | 4 ++++
2 files changed, 28 insertions(+)
diff --git a/drivers/soc/ti/k3-ringacc.c b/drivers/soc/ti/k3-ringacc.c
index 8a8f31d59e24..4cf1150de88e 100644
--- a/drivers/soc/ti/k3-ringacc.c
+++ b/drivers/soc/ti/k3-ringacc.c
@@ -322,6 +322,30 @@ struct k3_ring *k3_ringacc_request_ring(struct k3_ringacc *ringacc,
}
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
--
2.17.1
next prev parent reply other threads:[~2020-07-01 10:31 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-01 10:30 [PATCH next 0/6] soc: ti: k3-ringacc: updates Grygorii Strashko
2020-07-01 10:30 ` [PATCH next 1/6] dt-bindings: soc: ti: k3-ringacc: convert bindings to json-schema Grygorii Strashko
2020-07-15 9:40 ` Grygorii Strashko
2020-07-01 10:30 ` [PATCH next 2/6] soc: ti: k3-ringacc: Move state tracking variables under a struct Grygorii Strashko
2020-07-01 10:30 ` [PATCH next 3/6] soc: ti: k3-ringacc: add ring's flags to dump Grygorii Strashko
2020-07-01 10:30 ` Grygorii Strashko [this message]
2020-07-01 11:54 ` [PATCH next 4/6] soc: ti: k3-ringacc: add request pair of rings api Peter Ujfalusi
2020-07-01 12:12 ` Grygorii Strashko
2020-07-01 12:33 ` Peter Ujfalusi
2020-07-01 10:30 ` [PATCH next 5/6] soc: ti: k3-ringacc: separate soc specific initialization Grygorii Strashko
2020-07-01 10:30 ` [PATCH next 6/6] dmaengine: ti: k3-udma: Switch to k3_ringacc_request_rings_pair Grygorii Strashko
2020-07-02 12:57 ` Vinod Koul
2020-07-17 12:41 ` Grygorii Strashko
2020-07-08 8:33 ` [PATCH next 0/6] soc: ti: k3-ringacc: updates Peter Ujfalusi
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