Always disable and clear interrupts at probe time to ensure that the
TDA998x is in a sane state. This ensures that the interrupt line,
which is also the CEC clock calibration signal, is always deasserted.
Acked-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i2c/tda998x_drv.c | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index 7f2762fab5c9..16e0439cad44 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -1546,6 +1546,15 @@ static int tda998x_create(struct i2c_client *client, struct tda998x_priv *priv)
cec_write(priv, REG_CEC_FRO_IM_CLK_CTRL,
CEC_FRO_IM_CLK_CTRL_GHOST_DIS | CEC_FRO_IM_CLK_CTRL_IMCLK_SEL);
+ /* ensure interrupts are disabled */
+ cec_write(priv, REG_CEC_RXSHPDINTENA, 0);
+
+ /* clear pending interrupts */
+ cec_read(priv, REG_CEC_RXSHPDINT);
+ reg_read(priv, REG_INT_FLAGS_0);
+ reg_read(priv, REG_INT_FLAGS_1);
+ reg_read(priv, REG_INT_FLAGS_2);
+
/* initialize the optional IRQ */
if (client->irq) {
unsigned long irq_flags;
@@ -1553,11 +1562,6 @@ static int tda998x_create(struct i2c_client *client, struct tda998x_priv *priv)
/* init read EDID waitqueue and HDP work */
init_waitqueue_head(&priv->wq_edid);
- /* clear pending interrupts */
- reg_read(priv, REG_INT_FLAGS_0);
- reg_read(priv, REG_INT_FLAGS_1);
- reg_read(priv, REG_INT_FLAGS_2);
-
irq_flags =
irqd_get_trigger_type(irq_get_irq_data(client->irq));
irq_flags |= IRQF_SHARED | IRQF_ONESHOT;
--
2.7.4
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