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authorYong Wu <yong.wu@mediatek.com>2019-10-09 19:59:33 +0800
committerJoerg Roedel <jroedel@suse.de>2019-10-15 14:25:34 +0200
commitfb03082a54acd66c61535edfefe96b2ff88ce7e2 (patch)
treee895201d20c41f7f6c029c6e5072801845cac9af /drivers/memory/mtk-smi.c
parent4f5cafb5cb8471e54afdc9054d973535614f7675 (diff)
memory: mtk-smi: Add PM suspend and resume ops
In the commit 4f0a1a1ae351 ("memory: mtk-smi: Invoke pm runtime_callback to enable clocks"), we use pm_runtime callback to enable/disable the smi larb clocks. It will cause the larb's clock may not be disabled when suspend. That is because device_prepare will call pm_runtime_get_noresume which will keep the larb's PM runtime status still is active when suspend, then it won't enter our pm_runtime suspend callback to disable the corresponding clocks. This patch adds suspend pm_ops to force disable the clocks, Use "LATE" to make sure it disable the larb's clocks after the multimedia devices. Fixes: 4f0a1a1ae351 ("memory: mtk-smi: Invoke pm runtime_callback to enable clocks") Signed-off-by: Anan Sun <anan.sun@mediatek.com> Signed-off-by: Yong Wu <yong.wu@mediatek.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/memory/mtk-smi.c')
-rw-r--r--drivers/memory/mtk-smi.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c
index 439d7d886873..a113e811faab 100644
--- a/drivers/memory/mtk-smi.c
+++ b/drivers/memory/mtk-smi.c
@@ -366,6 +366,8 @@ static int __maybe_unused mtk_smi_larb_suspend(struct device *dev)
static const struct dev_pm_ops smi_larb_pm_ops = {
SET_RUNTIME_PM_OPS(mtk_smi_larb_suspend, mtk_smi_larb_resume, NULL)
+ SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
};
static struct platform_driver mtk_smi_larb_driver = {
@@ -507,6 +509,8 @@ static int __maybe_unused mtk_smi_common_suspend(struct device *dev)
static const struct dev_pm_ops smi_common_pm_ops = {
SET_RUNTIME_PM_OPS(mtk_smi_common_suspend, mtk_smi_common_resume, NULL)
+ SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
};
static struct platform_driver mtk_smi_common_driver = {