Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 137edc02 authored by Heiner Kallweit's avatar Heiner Kallweit Committed by Mauro Carvalho Chehab
Browse files

[media] rc: meson-ir: use readl_relaxed in the interrupt handler 



We don't need the memory barriers here and an interrupt handler should
be as fast as possible. Therefore switch to readl_relaxed.

Signed-off-by: default avatarHeiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: default avatarSean Young <sean@mess.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent 705aa578

drivers/media/rc/meson-ir.c

+4 −3
Original line number Diff line number Diff line
@@ -85,16 +85,17 @@ static void meson_ir_set_mask(struct meson_ir *ir, unsigned int reg, 
static irqreturn_t meson_ir_irq(int irqno, void *dev_id)

{

	struct meson_ir *ir = dev_id;

	u32 duration;

	u32 duration, status;

	DEFINE_IR_RAW_EVENT(rawir);



	spin_lock(&ir->lock);



	duration = readl(ir->reg + IR_DEC_REG1);

	duration = readl_relaxed(ir->reg + IR_DEC_REG1);

	duration = FIELD_GET(REG1_TIME_IV_MASK, duration);

	rawir.duration = US_TO_NS(duration * MESON_TRATE);



	rawir.pulse = !!(readl(ir->reg + IR_DEC_STATUS) & STATUS_IR_DEC_IN);

	status = readl_relaxed(ir->reg + IR_DEC_STATUS);

	rawir.pulse = !!(status & STATUS_IR_DEC_IN);



	ir_raw_event_store_with_filter(ir->rc, &rawir);

	ir_raw_event_handle(ir->rc);