[PATCH v8 14/33] crypto: rockchip: handle reset also in PM

Corentin Labbe
2022-07-06T10:29:46Z

reset could be handled by PM functions.
We keep the initial reset pulse to be sure the hw is a know device state
after probe.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/rockchip/rk3288_crypto.c | 22 ++++++++++------------
1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/drivers/crypto/rockchip/rk3288_crypto.c b/drivers/crypto/rockchip/rk3288_crypto.c
index d9258b9e71b3..399829ef92e0 100644
--- a/drivers/crypto/rockchip/rk3288_crypto.c
+++ b/drivers/crypto/rockchip/rk3288_crypto.c
@@ -74,14 +74,23 @@ static int rk_crypto_pm_suspend(struct device *dev)
struct rk_crypto_info *rkdev = dev_get_drvdata(dev);

rk_crypto_disable_clk(rkdev);
+ reset_control_assert(rkdev->rst);
+
return 0;
}

static int rk_crypto_pm_resume(struct device *dev)
{
struct rk_crypto_info *rkdev = dev_get_drvdata(dev);
+ int ret;
+
+ ret = rk_crypto_enable_clk(rkdev);
+ if (ret)
+ return ret;
+
+ reset_control_deassert(rkdev->rst);
+ return 0;

- return rk_crypto_enable_clk(rkdev);
}

static const struct dev_pm_ops rk_crypto_pm_ops = {
@@ -222,13 +231,6 @@ static void rk_crypto_unregister(void)
}
}

-static void rk_crypto_action(void *data)
-{
- struct rk_crypto_info *crypto_info = data;
-
- reset_control_assert(crypto_info->rst);
-}
-
static const struct of_device_id crypto_of_id_table[] = {
{ .compatible = "rockchip,rk3288-crypto" },
{}
@@ -258,10 +260,6 @@ static int rk_crypto_probe(struct platform_device *pdev)
usleep_range(10, 20);
reset_control_deassert(crypto_info->rst);

- err = devm_add_action_or_reset(dev, rk_crypto_action, crypto_info);
- if (err)
- goto err_crypto;
-
crypto_info->reg = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(crypto_info->reg)) {
err = PTR_ERR(crypto_info->reg);