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authorDong Aisheng <aisheng.dong@nxp.com>2020-07-29 11:00:13 +0300
committerShawn Guo <shawnguo@kernel.org>2020-10-26 05:53:54 +0300
commit78edeb080330ca2bc6c9b20d388c8ceb7a2ef8c0 (patch)
tree8b581d423dac8ad6439085627407e28c5afdde49 /drivers/clk/imx
parent2f1a2c1d00bc9417f5faa54777a23a52f054e9cf (diff)
downloadlinux-78edeb080330ca2bc6c9b20d388c8ceb7a2ef8c0.tar.xz
clk: imx: scu: add runtime pm support
Add runtime pm support Cc: Shawn Guo <shawnguo@kernel.org> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Michael Turquette <mturquette@baylibre.com> Reviewed-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'drivers/clk/imx')
-rw-r--r--drivers/clk/imx/clk-scu.c22
1 files 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);