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From: Dong Aisheng <aisheng.dong@nxp.com>
To: linux-clk@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org, sboyd@kernel.org,
	mturquette@baylibre.com, shawnguo@kernel.org,
	fabio.estevam@nxp.com, linux-imx@nxp.com, kernel@pengutronix.de,
	Dong Aisheng <aisheng.dong@nxp.com>
Subject: [PATCH V5 06/11] clk: imx: scu: add runtime pm support
Date: Mon,  9 Sep 2019 22:10:03 -0400
Message-ID: <1568081408-26800-7-git-send-email-aisheng.dong@nxp.com> (raw)
In-Reply-To: <1568081408-26800-1-git-send-email-aisheng.dong@nxp.com>

Add runtime pm support

Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Michael Turquette <mturquette@baylibre.com>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
---
ChangeLog:
v4->v5: 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 5b6ed89..04a0514 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"
@@ -450,15 +451,32 @@ 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);
 
-- 
2.7.4


  parent reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-10  2:09 [PATCH V5 00/11] clk: imx8: add new clock binding for better " Dong Aisheng
2019-09-09 14:19 ` Aisheng Dong
2019-09-10  2:09 ` [PATCH V5 01/11] dt-bindings: firmware: imx-scu: new binding to parse clocks from device tree Dong Aisheng
2019-09-10  2:09 ` [PATCH V5 02/11] dt-bindings: clock: imx-lpcg: add support " Dong Aisheng
2019-09-10  2:10 ` [PATCH V5 03/11] clk: imx: scu: add two cells binding support Dong Aisheng
2019-09-10  2:10 ` [PATCH V5 04/11] clk: imx: scu: bypass cpu power domains Dong Aisheng
2019-09-10  2:10 ` [PATCH V5 05/11] clk: imx: scu: allow scu clk to take device pointer Dong Aisheng
2019-09-10  2:10 ` Dong Aisheng [this message]
2019-09-10  2:10 ` [PATCH V5 07/11] clk: imx: scu: add suspend/resume support Dong Aisheng
2019-09-10  2:10 ` [PATCH V5 08/11] clk: imx: imx8qxp-lpcg: add parsing clocks from device tree Dong Aisheng
2019-09-10  2:10 ` [PATCH V5 09/11] clk: imx: lpcg: allow lpcg clk to take device pointer Dong Aisheng
2019-09-10  2:10 ` [PATCH V5 10/11] clk: imx: clk-imx8qxp-lpcg: add runtime pm support Dong Aisheng
2019-09-10  2:10 ` [PATCH V5 11/11] clk: imx: lpcg: add suspend/resume support Dong Aisheng
2019-09-18  6:08 ` [PATCH V5 00/11] clk: imx8: add new clock binding for better pm support Stephen Boyd

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