drm/i2c: tda998x: add DT support
This patch adds DT support to the tda998x.
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index d31e1c17..1ea4d43 100644
--- a/drivers/gpu/drm/i2c/tda998x_drv.c
+++ b/drivers/gpu/drm/i2c/tda998x_drv.c
@@ -1172,6 +1172,8 @@
struct drm_encoder_slave *encoder_slave)
{
struct tda998x_priv *priv;
+ struct device_node *np = client->dev.of_node;
+ u32 video;
int rev_lo, rev_hi, ret;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
@@ -1245,6 +1247,17 @@
cec_write(priv, REG_CEC_FRO_IM_CLK_CTRL,
CEC_FRO_IM_CLK_CTRL_GHOST_DIS | CEC_FRO_IM_CLK_CTRL_IMCLK_SEL);
+ if (!np)
+ return 0; /* non-DT */
+
+ /* get the optional video properties */
+ ret = of_property_read_u32(np, "video-ports", &video);
+ if (ret == 0) {
+ priv->vip_cntrl_0 = video >> 16;
+ priv->vip_cntrl_1 = video >> 8;
+ priv->vip_cntrl_2 = video;
+ }
+
return 0;
fail:
@@ -1259,6 +1272,14 @@
return -ENXIO;
}
+#ifdef CONFIG_OF
+static const struct of_device_id tda998x_dt_ids[] = {
+ { .compatible = "nxp,tda998x", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, tda998x_dt_ids);
+#endif
+
static struct i2c_device_id tda998x_ids[] = {
{ "tda998x", 0 },
{ }
@@ -1271,6 +1292,7 @@
.remove = tda998x_remove,
.driver = {
.name = "tda998x",
+ .of_match_table = of_match_ptr(tda998x_dt_ids),
},
.id_table = tda998x_ids,
},