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media: sunxi-cir: Implement suspend/resume/shutdown callbacks

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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>
This commit is contained in:
Samuel Holland 2021-01-18 07:00:48 +01:00 committed by Mauro Carvalho Chehab
parent 8f9061fa77
commit a6f42f5ebb
1 changed files with 21 additions and 0 deletions
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21
drivers/media/rc/sunxi-cir.c
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@ -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,
},
};