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clk: imx: clk-imx8qxp-lpcg: add runtime pm support

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add runtime pm support

Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Dong Aisheng 2020-07-29 16:00:17 +08:00 committed by Shawn Guo
parent a4bfc85ccf
commit 18cdbad40c
1 changed files with 19 additions and 5 deletions
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24
drivers/clk/imx/clk-imx8qxp-lpcg.c
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@ -12,6 +12,7 @@
#include <linux/of_address.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include "clk-scu.h"
@ -239,6 +240,12 @@ static int imx_lpcg_parse_clks_from_dt(struct platform_device *pdev,
return -EINVAL;
}
pm_runtime_get_noresume(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev, 500);
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_enable(&pdev->dev);
for (i = 0; i < count; i++) {
idx = bit_offset[i] / 4;
if (idx > IMX_LPCG_MAX_CLKS) {
@ -248,9 +255,9 @@ static int imx_lpcg_parse_clks_from_dt(struct platform_device *pdev,
goto unreg;
}
clk_hws[idx] = imx_clk_lpcg_scu(output_names[i],
parent_names[i], 0, base,
bit_offset[i], false);
clk_hws[idx] = imx_clk_lpcg_scu_dev(&pdev->dev, output_names[i],
parent_names[i], 0, base,
bit_offset[i], false);
if (IS_ERR(clk_hws[idx])) {
dev_warn(&pdev->dev, "failed to register clock %d\n",
idx);
@ -261,8 +268,13 @@ static int imx_lpcg_parse_clks_from_dt(struct platform_device *pdev,
ret = devm_of_clk_add_hw_provider(&pdev->dev, imx_lpcg_of_clk_src_get,
clk_data);
if (!ret)
return 0;
if (ret)
goto unreg;
pm_runtime_mark_last_busy(&pdev->dev);
pm_runtime_put_autosuspend(&pdev->dev);
return 0;
unreg:
while (--i >= 0) {
@ -271,6 +283,8 @@ unreg:
imx_clk_lpcg_scu_unregister(clk_hws[idx]);
}
pm_runtime_disable(&pdev->dev);
return ret;
}