[PATCH v7 06/11] clk: imx: scu: add runtime pm support
Dong Aisheng
aisheng.dong at nxp.com
Wed Jul 29 04:00:13 EDT 2020
Add runtime pm support
Cc: Shawn Guo <shawnguo at kernel.org>
Cc: Sascha Hauer <kernel at pengutronix.de>
Cc: Michael Turquette <mturquette at baylibre.com>
Reviewed-by: Stephen Boyd <sboyd at kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong at nxp.com>
---
ChangeLog:
v4->v7: no changes
v3: new patch
---
drivers/clk/imx/clk-scu.c | 22 ++++++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c
index a67cca0a32ad..f5dc6731a217 100644
--- a/drivers/clk/imx/clk-scu.c
+++ b/drivers/clk/imx/clk-scu.c
@@ -11,6 +11,7 @@
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm_domain.h>
+#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include "clk-scu.h"
@@ -453,15 +454,32 @@ static int imx_clk_scu_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct imx_scu_clk_node *clk = dev_get_platdata(dev);
struct clk_hw *hw;
+ int ret;
+
+ pm_runtime_set_suspended(dev);
+ pm_runtime_set_autosuspend_delay(dev, 50);
+ pm_runtime_use_autosuspend(&pdev->dev);
+ pm_runtime_enable(dev);
+
+ ret = pm_runtime_get_sync(dev);
+ if (ret) {
+ pm_runtime_disable(dev);
+ return ret;
+ }
- hw = __imx_clk_scu(NULL, clk->name, clk->parents, clk->num_parents,
+ hw = __imx_clk_scu(dev, clk->name, clk->parents, clk->num_parents,
clk->rsrc, clk->clk_type);
- if (IS_ERR(hw))
+ if (IS_ERR(hw)) {
+ pm_runtime_disable(dev);
return PTR_ERR(hw);
+ }
clk->hw = hw;
list_add_tail(&clk->node, &imx_scu_clks[clk->rsrc]);
+ pm_runtime_mark_last_busy(&pdev->dev);
+ pm_runtime_put_autosuspend(&pdev->dev);
+
dev_dbg(dev, "register SCU clock rsrc:%d type:%d\n", clk->rsrc,
clk->clk_type);
--
2.23.0
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