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.
Signed-off-by: Russell King rmk+kernel@armlinux.org.uk --- 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 661cb8915f2f..e294f5b50236 100644 --- a/drivers/gpu/drm/i2c/tda998x_drv.c +++ b/drivers/gpu/drm/i2c/tda998x_drv.c @@ -1547,6 +1547,15 @@ 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 */ priv->cec = i2c_new_dummy(client->adapter, priv->cec_addr); if (!priv->cec) @@ -1558,11 +1567,6 @@ 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;