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From:   Maxime Ripard <maxime@cerno.tech>
To:     Nicolas Saenz Julienne <nsaenzjulienne@suse.de>,
        Eric Anholt <eric@anholt.net>
Cc:     dri-devel@lists.freedesktop.org,
        linux-rpi-kernel@lists.infradead.org,
        bcm-kernel-feedback-list@broadcom.com,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Dave Stevenson <dave.stevenson@raspberrypi.com>,
        Tim Gover <tim.gover@raspberrypi.com>,
        Phil Elwell <phil@raspberrypi.com>,
        Maxime Ripard <maxime@cerno.tech>
Subject: [PATCH v3 088/105] drm/vc4: hdmi: Add CEC support flag
Date:   Wed, 27 May 2020 17:48:58 +0200
Message-Id: <954a94de6ea75165ef0c44ef0298bfa960601885.1590594512.git-series.maxime@cerno.tech>
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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(+)

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 7eb3cee25001..27cfcf38edb4 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1178,6 +1178,9 @@ static int vc4_hdmi_cec_init(struct vc4_hdmi *vc4_hdmi)
 	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 |
@@ -1457,6 +1460,7 @@ static int vc4_hdmi_dev_remove(struct platform_device *pdev)
 static const struct vc4_hdmi_variant bcm2835_variant = {
 	.encoder_type		= VC4_ENCODER_TYPE_HDMI0,
 	.debugfs_name		= "hdmi_regs",
+	.cec_available		= true,
 	.registers		= vc4_hdmi_fields,
 	.num_registers		= ARRAY_SIZE(vc4_hdmi_fields),
 
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
index 22100820c81b..20e0f5498f1e 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -33,6 +33,9 @@ struct vc4_hdmi_variant {
 	/* Filename to expose the registers in debugfs */
 	const char *debugfs_name;
 
+	/* 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;
 
-- 
git-series 0.9.1