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author | Gregory CLEMENT <gregory.clement@bootlin.com> | 2018-03-13 17:48:42 +0100 |
---|---|---|
committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-03-23 23:40:04 +0800 |
commit | 1d17cbfbb55cd80890312dd8c64d0008b25b05c0 (patch) | |
tree | 7616716634ca26e4dffe5cfd5fabf811a79b8589 /drivers/crypto | |
parent | 5b37689653cbe73d24760428c236feb15ccad2aa (diff) | |
download | linux-stable-1d17cbfbb55cd80890312dd8c64d0008b25b05c0.tar.gz linux-stable-1d17cbfbb55cd80890312dd8c64d0008b25b05c0.tar.bz2 linux-stable-1d17cbfbb55cd80890312dd8c64d0008b25b05c0.zip |
crypto: inside-secure - fix clock resource by adding a register clock
On Armada 7K/8K we need to explicitly enable the register clock. This
clock is optional because not all the SoCs using this IP need it but at
least for Armada 7K/8K it is actually mandatory.
The binding documentation is updated accordingly.
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
-rw-r--r-- | drivers/crypto/inside-secure/safexcel.c | 34 | ||||
-rw-r--r-- | drivers/crypto/inside-secure/safexcel.h | 1 |
2 files changed, 26 insertions, 9 deletions
diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c index cbcb5d9f17bd..2f68b4ed5500 100644 --- a/drivers/crypto/inside-secure/safexcel.c +++ b/drivers/crypto/inside-secure/safexcel.c @@ -895,16 +895,30 @@ static int safexcel_probe(struct platform_device *pdev) } } + priv->reg_clk = devm_clk_get(&pdev->dev, "reg"); + ret = PTR_ERR_OR_ZERO(priv->reg_clk); + /* The clock isn't mandatory */ + if (ret != -ENOENT) { + if (ret) + goto err_core_clk; + + ret = clk_prepare_enable(priv->reg_clk); + if (ret) { + dev_err(dev, "unable to enable reg clk (%d)\n", ret); + goto err_core_clk; + } + } + ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)); if (ret) - goto err_clk; + goto err_reg_clk; priv->context_pool = dmam_pool_create("safexcel-context", dev, sizeof(struct safexcel_context_record), 1, 0); if (!priv->context_pool) { ret = -ENOMEM; - goto err_clk; + goto err_reg_clk; } safexcel_configure(priv); @@ -919,12 +933,12 @@ static int safexcel_probe(struct platform_device *pdev) &priv->ring[i].cdr, &priv->ring[i].rdr); if (ret) - goto err_clk; + goto err_reg_clk; ring_irq = devm_kzalloc(dev, sizeof(*ring_irq), GFP_KERNEL); if (!ring_irq) { ret = -ENOMEM; - goto err_clk; + goto err_reg_clk; } ring_irq->priv = priv; @@ -936,7 +950,7 @@ static int safexcel_probe(struct platform_device *pdev) ring_irq); if (irq < 0) { ret = irq; - goto err_clk; + goto err_reg_clk; } priv->ring[i].work_data.priv = priv; @@ -947,7 +961,7 @@ static int safexcel_probe(struct platform_device *pdev) priv->ring[i].workqueue = create_singlethread_workqueue(wq_name); if (!priv->ring[i].workqueue) { ret = -ENOMEM; - goto err_clk; + goto err_reg_clk; } priv->ring[i].requests = 0; @@ -968,18 +982,20 @@ static int safexcel_probe(struct platform_device *pdev) ret = safexcel_hw_init(priv); if (ret) { dev_err(dev, "EIP h/w init failed (%d)\n", ret); - goto err_clk; + goto err_reg_clk; } ret = safexcel_register_algorithms(priv); if (ret) { dev_err(dev, "Failed to register algorithms (%d)\n", ret); - goto err_clk; + goto err_reg_clk; } return 0; -err_clk: +err_reg_clk: + clk_disable_unprepare(priv->reg_clk); +err_core_clk: clk_disable_unprepare(priv->clk); return ret; } diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h index d8dff65fc311..4efeb0251daf 100644 --- a/drivers/crypto/inside-secure/safexcel.h +++ b/drivers/crypto/inside-secure/safexcel.h @@ -525,6 +525,7 @@ struct safexcel_crypto_priv { void __iomem *base; struct device *dev; struct clk *clk; + struct clk *reg_clk; struct safexcel_config config; enum safexcel_eip_version version; |