[PATCH] crypto: qce: Initialize core src clock @100Mhz
From: Iaroslav Gridin <hidden>
Date: 2016-09-03 16:46:01
Also in:
linux-arm-msm, lkml
Subsystem:
crypto api, qualcomm crypto drivers, the rest · Maintainers:
Herbert Xu, "David S. Miller", Bartosz Golaszewski, Linus Torvalds
Without that, QCE performance is about 2x less. Signed-off-by: Iaroslav Gridin <redacted> --- drivers/crypto/qce/core.c | 18 +++++++++++++++++- drivers/crypto/qce/core.h | 2 +- 2 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/qce/core.c b/drivers/crypto/qce/core.c
index 0cde513..657354c 100644
--- a/drivers/crypto/qce/core.c
+++ b/drivers/crypto/qce/core.c@@ -193,6 +193,10 @@ static int qce_crypto_probe(struct platform_device *pdev) if (ret < 0) return ret; + qce->core_src = devm_clk_get(qce->dev, "core_src"); + if (IS_ERR(qce->core_src)) + return PTR_ERR(qce->core_src); + qce->core = devm_clk_get(qce->dev, "core"); if (IS_ERR(qce->core)) return PTR_ERR(qce->core);
@@ -205,10 +209,20 @@ static int qce_crypto_probe(struct platform_device *pdev) if (IS_ERR(qce->bus)) return PTR_ERR(qce->bus); - ret = clk_prepare_enable(qce->core); + ret = clk_prepare_enable(qce->core_src); if (ret) return ret; + ret = clk_set_rate(qce->core_src, 100000000); + if (ret) { + dev_warn(qce->dev, "Unable to set QCE core src clk @100Mhz, performance might be degraded\n"); + goto err_clks_core_src; + } + + ret = clk_prepare_enable(qce->core); + if (ret) + goto err_clks_core_src; + ret = clk_prepare_enable(qce->iface); if (ret) goto err_clks_core;
@@ -247,6 +261,8 @@ err_clks_iface: clk_disable_unprepare(qce->iface); err_clks_core: clk_disable_unprepare(qce->core); +err_clks_core_src: + clk_disable_unprepare(qce->core_src); return ret; }
diff --git a/drivers/crypto/qce/core.h b/drivers/crypto/qce/core.h
index 549965d..c5f8d08 100644
--- a/drivers/crypto/qce/core.h
+++ b/drivers/crypto/qce/core.h@@ -42,7 +42,7 @@ struct qce_device { int result; void __iomem *base; struct device *dev; - struct clk *core, *iface, *bus; + struct clk *core, *iface, *bus, *core_src; struct qce_dma_data dma; int burst_size; unsigned int pipe_pair_id;
--
2.9.3