[v3,10/11] clk: imx: clk-imx8qxp-lpcg: add runtime pm support

Commit Message

Dong Aisheng July 16, 2019, 3:01 p.m. UTC

add runtime pm support

Signed-off-by: Dong Aisheng <[e-mail]>
---
ChangeLog:
v3: new patch
---
 drivers/clk/imx/clk-imx8qxp-lpcg.c | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

Patch

diff --git a/drivers/clk/imx/clk-imx8qxp-lpcg.c b/drivers/clk/imx/clk-imx8qxp-lpcg.c
index dbb8960..0043639 100644
--- a/drivers/clk/imx/clk-imx8qxp-lpcg.c
+++ b/drivers/clk/imx/clk-imx8qxp-lpcg.c
@@ -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"
@@ -214,6 +215,12 @@  static int imx_lpcg_parse_clks_from_dt(struct platform_device *pdev,
 
 	autogate = of_property_read_bool(np, "hw-autogate");
 
+	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 < clk_data->num; i++) {
 		if (bit_offset[i] > 31) {
 			dev_warn(&pdev->dev, "invalid bit offset of clock %d\n",
@@ -221,9 +228,9 @@  static int imx_lpcg_parse_clks_from_dt(struct platform_device *pdev,
 			return -EINVAL;
 		}
 
-		clk_hws[i] = imx_clk_lpcg_scu(output_names[i],
-					      parent_names[i], 0, base,
-					      bit_offset[i], autogate);
+		clk_hws[i] = imx_clk_lpcg_scu_dev(&pdev->dev, output_names[i],
+						  parent_names[i], 0, base,
+						  bit_offset[i], autogate);
 		if (IS_ERR(clk_hws[i])) {
 			dev_warn(&pdev->dev, "failed to register clock %d\n",
 				 i);
@@ -231,8 +238,13 @@  static int imx_lpcg_parse_clks_from_dt(struct platform_device *pdev,
 		}
 	}
 
-	return devm_of_clk_add_hw_provider(&pdev->dev, of_clk_hw_onecell_get,
-					   clk_data);
+	ret = devm_of_clk_add_hw_provider(&pdev->dev, of_clk_hw_onecell_get,
+					  clk_data);
+
+	pm_runtime_mark_last_busy(&pdev->dev);
+	pm_runtime_put_autosuspend(&pdev->dev);
+
+	return ret;
 }
 
 static int imx8qxp_lpcg_clk_probe(struct platform_device *pdev)