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clk: imx: scu: add runtime pm support 

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>
5.4-rM2-2.2.x-imx-squashed
Dong Aisheng 2019-07-14 19:22:16 +08:00
parent 996e60e2c8
commit ed93db277e
1 changed files with 20 additions and 2 deletions
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22
drivers/clk/imx/clk-scu.c
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@ -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"
@ -752,15 +753,32 @@ 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;
hw = __imx_clk_scu(NULL, clk->name, clk->parents, clk->num_parents,
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(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);