diff options
| author | Russell King <rmk+kernel@armlinux.org.uk> | 2017-03-11 14:12:22 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2018-04-03 14:21:54 +0300 |
| commit | ba8975f15bb93d7f3ebd995a41c2e4b6945bad78 (patch) | |
| tree | b99823bf145cb337056da81745e83369499e687b /drivers/gpu/drm/i2c | |
| parent | 101e996b8d321514c45136bef4dd0b1d3c577036 (diff) | |
| download | linux-ba8975f15bb93d7f3ebd995a41c2e4b6945bad78.tar.xz | |
drm/i2c: tda998x: always disable and clear interrupts at probe
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@cisco.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'drivers/gpu/drm/i2c')
| -rw-r--r-- | drivers/gpu/drm/i2c/tda998x_drv.c | 14 |
1 files 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; |