diff options
| author |   Samuel Holland <samuel@sholland.org> | 2021-01-18 07:00:48 +0100 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2021-01-27 08:27:59 +0100 |
| commit | a6f42f5ebb7fa41bb17fd1814554929bf683007f (patch) | |
| tree | acc8d051fe214f575e1bdb5ee3c6d8e90c5794cc /drivers/media/rc/sunxi-cir.c | |
| parent | media: sunxi-cir: Factor out hardware initialization (diff) | |
| download | linux-dev-a6f42f5ebb7fa41bb17fd1814554929bf683007f.tar.xz linux-dev-a6f42f5ebb7fa41bb17fd1814554929bf683007f.zip | |
media: sunxi-cir: Implement suspend/resume/shutdown callbacks
To save power, gate/reset the hardware block while the system is
asleep or powered off.
Acked-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media/rc/sunxi-cir.c')
| -rw-r--r-- | drivers/media/rc/sunxi-cir.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/media/rc/sunxi-cir.c b/drivers/media/rc/sunxi-cir.c index 2d099da8d3cc..168e1d2c876a 100644 --- a/drivers/media/rc/sunxi-cir.c +++ b/drivers/media/rc/sunxi-cir.c @@ -234,6 +234,20 @@ static void sunxi_ir_hw_exit(struct device *dev) reset_control_assert(ir->rst); } +static int __maybe_unused sunxi_ir_suspend(struct device *dev) +{ + sunxi_ir_hw_exit(dev); + + return 0; +} + +static int __maybe_unused sunxi_ir_resume(struct device *dev) +{ + return sunxi_ir_hw_init(dev); +} + +static SIMPLE_DEV_PM_OPS(sunxi_ir_pm_ops, sunxi_ir_suspend, sunxi_ir_resume); + static int sunxi_ir_probe(struct platform_device *pdev) { int ret = 0; @@ -362,6 +376,11 @@ static int sunxi_ir_remove(struct platform_device *pdev) return 0; } +static void sunxi_ir_shutdown(struct platform_device *pdev) +{ + sunxi_ir_hw_exit(&pdev->dev); +} + static const struct sunxi_ir_quirks sun4i_a10_ir_quirks = { .has_reset = false, .fifo_size = 16, @@ -397,9 +416,11 @@ MODULE_DEVICE_TABLE(of, sunxi_ir_match); static struct platform_driver sunxi_ir_driver = { .probe = sunxi_ir_probe, .remove = sunxi_ir_remove, + .shutdown = sunxi_ir_shutdown, .driver = { .name = SUNXI_IR_DEV, .of_match_table = sunxi_ir_match, + .pm = &sunxi_ir_pm_ops, }, }; |