From c9f1f271d4b6455d5ecf43e393668a7c8f4cb833 Mon Sep 17 00:00:00 2001 From: Martin Bugge Date: Tue, 10 Dec 2013 11:14:26 -0300 Subject: [PATCH] [media] adv7842: properly enable/disable the irqs The method of disabling the irq-output pin caused many "empty" interrupts. Instead, actually disable/enable the interrupts by changing the interrupt masks. Also enable STORE_MASKED_IRQ in INT1 configuration, otherwise when HDMI events happen while the interrupt is masked those events will be ignored when the interrupt is unmasked. Signed-off-by: Martin Bugge Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/i2c/adv7842.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c index 6434a93e1416..cbbfa774079d 100644 --- a/drivers/media/i2c/adv7842.c +++ b/drivers/media/i2c/adv7842.c @@ -1786,10 +1786,8 @@ static int adv7842_isr(struct v4l2_subdev *sd, u32 status, bool *handled) struct adv7842_state *state = to_state(sd); u8 fmt_change_cp, fmt_change_digital, fmt_change_sdp; u8 irq_status[5]; - u8 irq_cfg = io_read(sd, 0x40); - /* disable irq-pin output */ - io_write(sd, 0x40, irq_cfg | 0x3); + adv7842_irq_enable(sd, false); /* read status */ irq_status[0] = io_read(sd, 0x43); @@ -1810,6 +1808,8 @@ static int adv7842_isr(struct v4l2_subdev *sd, u32 status, bool *handled) if (irq_status[4]) io_write(sd, 0x9e, irq_status[4]); + adv7842_irq_enable(sd, true); + v4l2_dbg(1, debug, sd, "%s: irq %x, %x, %x, %x, %x\n", __func__, irq_status[0], irq_status[1], irq_status[2], irq_status[3], irq_status[4]); @@ -1845,9 +1845,6 @@ static int adv7842_isr(struct v4l2_subdev *sd, u32 status, bool *handled) if (handled) *handled = true; - /* re-enable irq-pin output */ - io_write(sd, 0x40, irq_cfg); - return 0; } @@ -2446,7 +2443,7 @@ static int adv7842_core_init(struct v4l2_subdev *sd, io_write(sd, 0x33, 0x40); /* interrupts */ - io_write(sd, 0x40, 0xe2); /* Configure INT1 */ + io_write(sd, 0x40, 0xf2); /* Configure INT1 */ adv7842_irq_enable(sd, true); -- 2.30.2