openwrt/target/linux/bcm27xx/patches-5.4/950-0585-drm-vc4-hdmi-Add-CEC-support-flag.patch
Álvaro Fernández Rojas 62b7f5931c bcm27xx: import latest patches from the RPi foundation
bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G
bcm2710: boot tested on RPi 3B v1.2
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry-picked from commit f07e572f64)
2021-02-19 07:17:21 +01:00

48 lines
1.5 KiB
Diff

From 0f626dc8443a93138806b4a3f351bac346036358 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Thu, 6 Feb 2020 16:22:50 +0100
Subject: [PATCH] drm/vc4: hdmi: Add CEC support flag
Similarly to the audio support, CEC support is not there yet for the
BCM2711, so let's skip entirely the CEC initialization through a variant
flag.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 4 ++++
drivers/gpu/drm/vc4/vc4_hdmi.h | 3 +++
2 files changed, 7 insertions(+)
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1187,6 +1187,9 @@ static int vc4_hdmi_cec_init(struct vc4_
u32 value;
int ret;
+ if (!vc4_hdmi->variant->cec_available)
+ return 0;
+
vc4_hdmi->cec_adap = cec_allocate_adapter(&vc4_hdmi_cec_adap_ops,
vc4_hdmi, "vc4",
CEC_CAP_DEFAULTS |
@@ -1475,6 +1478,7 @@ static int vc4_hdmi_dev_remove(struct pl
static const struct vc4_hdmi_variant bcm2835_variant = {
.audio_available = true,
+ .cec_available = true,
.registers = vc4_hdmi_fields,
.num_registers = ARRAY_SIZE(vc4_hdmi_fields),
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -35,6 +35,9 @@ struct vc4_hdmi_variant {
/* Set to true when the audio support is available */
bool audio_available;
+ /* Set to true when the CEC support is available */
+ bool cec_available;
+
/* List of the registers available on that variant */
const struct vc4_hdmi_register *registers;