From 8cbc3448214a9d4534f8381ec23ef5add0ae8d91 Mon Sep 17 00:00:00 2001
From: Thara Gopinath <thara.gopinath@linaro.org>
Date: Thu, 19 Nov 2020 10:52:30 -0500
Subject: [PATCH] crypto: qce - Enable support for crypto engine on sdm845
Add support Qualcomm Crypto Engine accelerated encryption and
authentication algorithms on sdm845.
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---
drivers/crypto/qce/core.c | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/crypto/qce/core.c b/drivers/crypto/qce/core.c
index 5e6717f9bbdaa..80b75085c2659 100644
--- a/drivers/crypto/qce/core.c
+++ b/drivers/crypto/qce/core.c
@@ -159,7 +159,21 @@ static int qce_check_version(struct qce_device *qce)
return -ENODEV;
qce->burst_size = QCE_BAM_BURST_SIZE;
- qce->pipe_pair_id = 1;
+
+ /*
+ * Rx and tx pipes are treated as a pair inside CE.
+ * Pipe pair number depends on the actual BAM dma pipe
+ * that is used for transfers. The BAM dma pipes are passed
+ * from the device tree and used to derive the pipe pair
+ * id in the CE driver as follows.
+ * BAM dma pipes(rx, tx) CE pipe pair id
+ * 0,1 0
+ * 2,3 1
+ * 4,5 2
+ * 6,7 3
+ * ...
+ */
+ qce->pipe_pair_id = qce->dma.rxchan->chan_id >> 1;
dev_dbg(qce->dev, "Crypto device found, version %d.%d.%d\n",
major, minor, step);
@@ -260,6 +274,7 @@ static int qce_crypto_remove(struct platform_device *pdev)
static const struct of_device_id qce_crypto_of_match[] = {
{ .compatible = "qcom,crypto-v5.1", },
+ { .compatible = "qcom,crypto-v5.4", },
{}
};
MODULE_DEVICE_TABLE(of, qce_crypto_of_match);
--
2.30.2