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authorStephen Boyd <sboyd@kernel.org>2018-12-14 13:44:19 -0800
committerStephen Boyd <sboyd@kernel.org>2018-12-14 13:44:19 -0800
commit5964ac60131c0829f6fa9883c6c578028f553267 (patch)
tree66ad086d5c2d23432862c85956696da522f2635a /drivers/clk
parent9dc320424708378b7a2137a148fc4fc816105ba2 (diff)
parent8cbdc1f09f7ac5c082818909da104f92d3f38d77 (diff)
downloadlinux-5964ac60131c0829f6fa9883c6c578028f553267.tar.bz2
Merge branch 'clk-vc5-suspend' into clk-next
- Proper suspend/resume on VersaClock5 * clk-vc5-suspend: clk: vc5: Add suspend/resume support
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/clk-versaclock5.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/clk/clk-versaclock5.c b/drivers/clk/clk-versaclock5.c
index decffb3826ec..5b393e711e94 100644
--- a/drivers/clk/clk-versaclock5.c
+++ b/drivers/clk/clk-versaclock5.c
@@ -906,6 +906,28 @@ static int vc5_remove(struct i2c_client *client)
return 0;
}
+static int __maybe_unused vc5_suspend(struct device *dev)
+{
+ struct vc5_driver_data *vc5 = dev_get_drvdata(dev);
+
+ regcache_cache_only(vc5->regmap, true);
+ regcache_mark_dirty(vc5->regmap);
+
+ return 0;
+}
+
+static int __maybe_unused vc5_resume(struct device *dev)
+{
+ struct vc5_driver_data *vc5 = dev_get_drvdata(dev);
+ int ret;
+
+ regcache_cache_only(vc5->regmap, false);
+ ret = regcache_sync(vc5->regmap);
+ if (ret)
+ dev_err(dev, "Failed to restore register map: %d\n", ret);
+ return ret;
+}
+
static const struct vc5_chip_info idt_5p49v5923_info = {
.model = IDT_VC5_5P49V5923,
.clk_fod_cnt = 2,
@@ -961,9 +983,12 @@ static const struct of_device_id clk_vc5_of_match[] = {
};
MODULE_DEVICE_TABLE(of, clk_vc5_of_match);
+static SIMPLE_DEV_PM_OPS(vc5_pm_ops, vc5_suspend, vc5_resume);
+
static struct i2c_driver vc5_driver = {
.driver = {
.name = "vc5",
+ .pm = &vc5_pm_ops,
.of_match_table = clk_vc5_of_match,
},
.probe = vc5_probe,