From: Zelong Dong <zelong.dong@xxxxxxxxxxx>
IR Controller could be used and updated by other processor
while kernel has been suspended.
Reinitialize IR Controller just in case while kernel is resuming.
Signed-off-by: Zelong Dong <zelong.dong@xxxxxxxxxxx>
---
drivers/media/rc/meson-ir.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/drivers/media/rc/meson-ir.c b/drivers/media/rc/meson-ir.c
index 5303e6da5809..9cdb45821ecc 100644
--- a/drivers/media/rc/meson-ir.c
+++ b/drivers/media/rc/meson-ir.c
@@ -567,6 +567,32 @@ static void meson_ir_shutdown(struct platform_device *pdev)
spin_unlock_irqrestore(&ir->lock, flags);
}
+static __maybe_unused int meson_ir_resume(struct device *dev)
+{
+ struct meson_ir *ir = dev_get_drvdata(dev);
+
+ if (ir->param->support_hw_decoder)
+ meson_ir_hw_decoder_init(ir->rc, &ir->rc->enabled_protocols);
+ else
+ meson_ir_sw_decoder_init(ir->rc);
+
+ return 0;
+}
+
+static __maybe_unused int meson_ir_suspend(struct device *dev)
+{
+ struct meson_ir *ir = dev_get_drvdata(dev);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ir->lock, flags);
+ regmap_update_bits(ir->reg, IR_DEC_REG1, IR_DEC_REG1_ENABLE, 0);
+ spin_unlock_irqrestore(&ir->lock, flags);
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(meson_ir_pm_ops, meson_ir_suspend, meson_ir_resume);
+
static const struct meson_ir_param meson6_ir_param = {
.support_hw_decoder = false,
.max_register = IR_DEC_REG1,
@@ -607,6 +633,7 @@ static struct platform_driver meson_ir_driver = {
.driver = {
.name = DRIVER_NAME,
.of_match_table = meson_ir_match,
+ .pm = pm_ptr(&meson_ir_pm_ops),
},
};
--
2.35.1
