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| author | Stephen Boyd <sboyd@kernel.org> | 2018-12-14 22:44:19 +0100 |
|---|---|---|
| committer | Stephen Boyd <sboyd@kernel.org> | 2018-12-14 22:44:19 +0100 |
| commit | 5964ac60131c0829f6fa9883c6c578028f553267 (patch) | |
| tree | 66ad086d5c2d23432862c85956696da522f2635a /drivers/clk | |
| parent | Merge branch 'clk-fixes' into clk-next (diff) | |
| parent | clk: vc5: Add suspend/resume support (diff) | |
| download | linux-5964ac60131c0829f6fa9883c6c578028f553267.tar.xz linux-5964ac60131c0829f6fa9883c6c578028f553267.zip | |
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.c | 25 |
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, |