[PATCH v7 06/11] clk: imx: scu: add runtime pm support
From: Dong Aisheng <aisheng.dong@nxp.com>
Date: 2020-07-29 08:04:50
Also in:
linux-clk
Subsystem:
common clk framework, nxp i.mx clock drivers, the rest · Maintainers:
Michael Turquette, Stephen Boyd, Abel Vesa, Linus Torvalds
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> --- 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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