Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/vc4: hdmi: implement clear_infoframe
Implement the clear_infoframe callback, disabling corresponding
InfoFrame type.
Acked-by: Maxime Ripard <mripard@kernel.org>
Link: https://patch.msgid.link/20260107-limit-infoframes-2-v4-2-213d0d3bd490@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
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+25
drivers/gpu/drm/vc4/vc4_hdmi.c
+25
drivers/gpu/drm/vc4/vc4_hdmi.c
···
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return ret;
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}
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+
static int vc4_hdmi_clear_infoframe(struct drm_connector *connector,
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enum hdmi_infoframe_type type)
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{
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struct vc4_hdmi *vc4_hdmi = connector_to_vc4_hdmi(connector);
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struct drm_device *drm = connector->dev;
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int ret;
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int idx;
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+
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if (!drm_dev_enter(drm, &idx))
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return 0;
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+
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WARN_ONCE(!(HDMI_READ(HDMI_RAM_PACKET_CONFIG) &
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VC4_HDMI_RAM_PACKET_ENABLE),
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"Packet RAM has to be on to store the packet.");
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+
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ret = vc4_hdmi_stop_packet(vc4_hdmi, type, true);
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if (ret)
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drm_err(drm, "Failed to wait for infoframe to go idle: %d\n", ret);
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+
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drm_dev_exit(idx);
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+
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return ret;
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+
}
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+
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static int vc4_hdmi_write_infoframe(struct drm_connector *connector,
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enum hdmi_infoframe_type type,
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const u8 *infoframe, size_t len)
···
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static const struct drm_connector_hdmi_funcs vc4_hdmi_hdmi_connector_funcs = {
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.tmds_char_rate_valid = vc4_hdmi_connector_clock_valid,
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.clear_infoframe = vc4_hdmi_clear_infoframe,
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.write_infoframe = vc4_hdmi_write_infoframe,
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};
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